CN115359939A - High-energy ray protection tooling for GIS equipment defect detection in UHV stations - Google Patents

Abstract

The application discloses high energy ray protection frock for extra-high voltage station GIS equipment defect detection, including installing the bottom plate on the check out test set base, fixed mounting has two piece at least flexible stands on the bottom plate, and arbitrary flexible stand top fixedly connected with horizontal pole forms the L type braced frame of inversion installation, all be provided with a set of stores pylon at least on flexible stand and the horizontal pole, the stores pylon is including the U type support body that is used for connecting L type braced frame, and fixed mounting be in be used for connecting the lacing film mechanism of guard plate on the U type support body, the guard plate wraps up at least or shelters from the three lateral wall of high energy ray apparatus. The invention adopts sponge or plastic foam to fix the radiation-proof microparticles in discrete space, and the protection plate structure has better protection performance for the radiation which is reflected or scattered or leaked around the X-ray equipment, and simultaneously can greatly reduce the weight of the protection plate.

Description

High-energy ray protective tooling for GIS equipment defect detection in UHV stations

technical field

The invention relates to the technical field of defect detection of electric power equipment, in particular to the technical field of protection devices for GIS equipment defect detection of UHV stations, and in particular to high-energy ray protection tooling for GIS device defect detection of UHV stations.

Background technique

GIS equipment has been widely used all over the world since it was put into practical use in the 1960s. GIS is not only widely used in the field of high voltage and ultra-high voltage, but also in the field of ultra-high voltage. Compared with conventional open substations, GIS has the advantages of compact structure, small footprint, high reliability, flexible configuration, convenient installation, strong safety, strong environmental adaptability, and small maintenance workload. The interval is not less than 20 years.

GIS is high-voltage electrical equipment with high operational reliability, less maintenance workload, and long maintenance cycle. Its failure rate is only 20% to 40% of conventional equipment, but GIS also has its inherent shortcomings. Due to the leakage of SF6 gas and the external moisture Infiltration, the presence of conductive impurities, sub-aging and other factors may lead to internal flashover failures in GIS. The fully sealed structure of GIS makes it difficult to locate and repair faults, and the maintenance work is complicated. The average maintenance time after an accident is longer than that of conventional equipment, and its power failure range is large, often involving many non-faulty components.

X-ray detection, as an efficient, non-destructive and visual detection method, has been widely used in power grid operation and maintenance in recent years. However, X-ray detection of GIS generally uses high-energy ray equipment, which makes the equipment work. The radiation dose will be much higher than the dose of existing medical X-ray equipment, which will pose a great threat to the health of operators; although, X-ray equipment is equipped with beam limiters to limit the emission direction of X-rays, but in practical applications At the same time, obvious radiation can also be detected by portable radiation monitoring instruments. Therefore, in order to protect the health of inspectors, further protection should be provided for high-energy X-ray devices.

Contents of the invention

In order to solve the serious problem of high-energy X-ray devices in the prior art that endanger the health of inspectors due to large doses of radiation, this application provides high-energy ray protective tooling for GIS equipment defect detection in UHV stations, which is used to block leaked X-ray radiation. Avoid radiation damage to inspectors who operate X-ray equipment.

In order to achieve the above object, the technical scheme adopted in this application is:

The high-energy ray protection tooling used for GIS equipment defect detection in UHV stations includes a bottom plate installed on the base of the testing equipment, at least two telescopic columns are fixedly installed on the bottom plate, and the top of any telescopic column is fixedly connected with a cross bar, forming The L-shaped support frame installed upside down, at least one set of hangers are arranged on the telescopic column and the cross bar, and the hanger includes a U-shaped frame body for connecting the L-shaped support frame, and is fixedly installed on the U-shaped support frame. The hanger mechanism used to connect the protective plate on the frame body, the protective plate at least wraps or shields the three side walls of the high-energy radiation device.

In order to facilitate the installation, disassembly, replacement or adjustment of the protective plate, preferably, the hanging piece mechanism includes a hanging piece fixedly installed on the U-shaped frame body, the hanging piece is plate-shaped and the middle part is provided with an escape hole, and a chute that communicates with the avoidance hole and extends downward along the length direction of the hanging piece, the width of the chute is smaller than the diameter of the avoidance hole or the shortest line passing through the center of the avoidance hole; it also includes a connecting clip, The connecting clip includes a screw threaded cap and a clip body, the clip body includes an integrally formed screw, and a partition baffle, a connecting column and an enlarged round table connected to the screw in sequence, the uncle screw and the threaded cap connect.

As one of the preferred solutions of the present application, the protective plate is a foam plate containing radiation-proof metal particles or alloy particles. The manufacturing method of described protective plate comprises the following steps:

Step 100, mixing the main component comprising isocyanate and polyol with auxiliary agents comprising foaming agent, stabilizer, crosslinking agent, catalyst, anti-aging agent, flame retardant and chain extender according to the preset component content;

Step 200, using an electric stirring tool to fully stir the mixture obtained in step 100 at room temperature, the stirring speed is controlled at 150rpm-180rpm, and the stirring time T is not less than 2 minutes-5 minutes;

Step 300, add triethylamine to the mixture obtained in step 200 and stir at room temperature for 30 seconds to 60 seconds, the speed is controlled at 150rpm-180rpm, then add PAPI and stir for 30 seconds under the same conditions, then put it into a standard foaming device Carry out foaming treatment and time at the same time;

Step 400, when the foaming time period reaches the gel time of the preset component content, put tungsten oxide with a particle size not exceeding 70nm or lead powder with a particle size not exceeding 10um into the foamed mixture in step 300 and Stir, the mass of tungsten oxide powder or lead powder added accounts for 80%-90% of the total mass, stir for 4-5 minutes at a speed of 60rpm-80rpm, let it stand until it is completely solidified and cut and polish it into the required specification plate .

As another preferred solution of the present application, the protective plate is a multi-layer sponge flannelette containing radiation-proof metal particles or alloy particles.

The manufacturing method of the protective plate of the described multi-layer sponge flannelette structure comprises the following steps:

Brush the adhesive on both sides of the sponge with a thickness of 2mm-3mm and remove the excess adhesive with a scraper, then cover the entire adhesive brushing area with finished lead powder or tungsten oxide powder to remove excess lead powder that is not effectively bonded Or tungsten oxide powder; use the same method to bond the other side of the sponge, and use it after completion;

After the viscose is air-dried naturally, brush the glue on both sides of the sponge and cover it with lead powder or tungsten oxide powder. Then place flannelettes of equal size on the sponge and treat the other side. After the treatment on both sides is completed, clean the sponge. Physically press the fleece until the glue is cured, so that the flannel on both sides and the sponge in the middle are bonded together to form a single-layer protective plate that constitutes the protective plate.

In order to enhance the protective capability, preferably, the protective plate includes a single-layer protective plate in which multiple layers are bonded or sewn together.

Beneficial effect:

The invention adopts sponge or plastic foam to fix the radiation-proof micro-particles in a discrete space. This kind of protective plate structure has better protection performance in terms of radiation reflected or scattered or leaked around the X-ray equipment. At the same time, it can greatly reduce the The weight of the fender.

Discrete dense anti-radiation metal particles can increase the number of reflections of X-rays inside the protective plate, greatly increasing the penetration path of X-rays in the protective plate, which has effective attenuation compared with single protective materials with uniform texture. At the same time, the X-rays that pass through the shield vertically will be greatly reduced, so that the effective radiation dose received by the operator behind the shield will be greatly reduced, and even the radiation damage will be avoided.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. For those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic diagram of the structure of the application with the protective plate removed when it is in use.

Fig. 2 is an enlarged view of the structure of area A in Fig. 1 .

Fig. 3 is a schematic diagram of the structure of the present invention including the protective plate.

FIG. 4 is another schematic view of the visual structure of FIG. 3 .

Fig. 5 is a structural front view of the hanging mechanism.

FIG. 6 is an isometric view of FIG. 5 .

Fig. 7 is a schematic diagram of the shielding plate blocking X-rays.

In the figure: 1-base; 2-bottom plate; 3-telescopic column; 4-horizontal bar; 5-hanger; 6-U-shaped frame body; 72-screw; 73-separation baffle; 74-connecting column; 75-expanded round table; 76-avoidance hole; 77-chute.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of this application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" " and other indications are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the application product is used, and are only for the convenience of describing the application and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the application. In addition, if the terms "first", "second" and the like appear in the description of the present application, they are only used to distinguish the description, and should not be understood as indicating or implying relative importance.

In addition, terms such as "horizontal" and "vertical" in the description of the present application do not mean that the components are required to be absolutely horizontal or hang, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of this application, it should also be explained that, unless otherwise clearly specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed The connection can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

Example 1:

The high-energy ray protection tooling for GIS equipment defect detection in UHV stations shown in Figures 1 to 4 of the specification includes a base plate 2 installed on the detection equipment base 1, and at least two telescopic beams are fixedly installed on the base plate 2. Column 3, the top of any telescopic column 3 is fixedly connected with a cross bar 4, forming an L-shaped support frame installed upside down. The telescopic column 3 and the cross bar 4 are all provided with at least one set of hangers 5, and the hangers 5 It includes a U-shaped frame body 6 for connecting the L-shaped support frame, and a hanging mechanism 7 fixedly installed on the U-shaped frame body 6 for connecting a protective plate 8, and the protective plate 8 at least wraps or shields high-energy rays The device has three side walls.

working principle:

The principle of X-ray protection is very simple. The most direct and simplest way is to use high-density materials that are not easily penetrated by X-rays for physical barriers. By setting barrier materials on the path where X-rays are not expected to propagate, X-rays cannot be effectively transmitted. It is blocked at the position of the barrier material, so that the other side of the barrier material has no radiation and will not suffer radiation damage.

In this embodiment, the L-shaped support frame is formed by the telescopic column 3 and the cross bar 4, and the support frame for supporting the protective plate 8 is formed by a plurality of L-shaped support frames, which can be flexibly arranged in X-ray devices of different specifications and structures The position of the L-shaped support frame forms support frames of different modes and structures, and the protective plate 8 is installed on the L-shaped support frame through the U-shaped frame body 6 and the hanging mechanism 7 to form a protective structure for wrapping or covering the X-ray equipment. So as to achieve the purpose of effective protection. In this embodiment, the protective plate 8 can adopt an existing high-density protective structure, such as a lead plate, a tungsten oxide plate, and the like.

Example 2:

In order to facilitate the installation, disassembly, replacement or adjustment of the protective plate 8, this embodiment is based on the structure and principle of the embodiment 1, and the structure of the hanging piece mechanism 7 is refined, so as to realize reliable and flexible assembly. In conjunction with accompanying drawings 5-shown in Figure 6, the hanging piece mechanism 7 includes a hanging piece fixedly installed on the U-shaped frame body 6, the hanging piece is plate-shaped and the middle part is provided with an avoidance hole 76, and is connected with the avoidance The hole 76 communicates with and extends downward along the length direction of the hanging piece to form a chute 77, the width of which is smaller than the diameter of the avoidance hole 76 or the shortest line passing through the center of the avoidance hole 76; it also includes a connecting clip, The connecting clip includes a threaded screw cap 71 and a clip body, the clip body includes an integrally formed screw 72, and a partition baffle 73, a connecting column 74 and an enlarged round table 75 connected in sequence with the screw 72, The uncle screw rod 72 is connected with the threaded pressure cap 71 . When installing, it is only necessary to align the enlarged round table 75 with the avoidance hole 76, so that the enlarged round table 75 penetrates the avoidance hole 76 and then under the action of gravity, the connecting column 74 with a diameter smaller than the enlarged round table 75 slides into the chute 77, thereby realizing Effective clamping, so that the protective plate 8 is fixed on the scraper mechanism 7 . The advantage of this connection method is that no matter what structure or size the protected X-ray equipment is in, it can be spliced and covered by multiple protective plates 8 .

Example 3:

The protective plate 8 used in this embodiment is a foam plate containing radiation-proof metal particles or alloy particles. The manufacturing method of protective plate 8 described in the present embodiment comprises the following steps:

Step 100, mixing the main component comprising isocyanate and polyol with auxiliary agents comprising foaming agent, stabilizer, crosslinking agent, catalyst, anti-aging agent, flame retardant and chain extender according to the preset component content;

The blowing agent is mainly used as a source of bubbles after gasification and can remove the heat of reaction, avoiding the "burning" phenomenon of the foam center due to excessive temperature. In this embodiment, cyclopentane or liquid carbon dioxide is used. The role of the stabilizer is to stabilize the foam state and adjust the size and structure of the cells. The function of the crosslinking agent is to improve the mechanical properties of the foam and increase the elasticity of the foam. Catalysts are used to speed up catalytic foaming and gelling reactions and improve overall efficiency. The anti-aging agent is used to improve thermal oxidation, oxygen aging, humidity aging and other properties, and the function of the flame retardant is to make the product have a flame-retardant effect. The above-mentioned preparation can use the existing foam making materials, and this embodiment does not innovate for the foam body. The key point is that during the foam foaming process, when it is in a high-viscosity colloidal state, it can make it possible to incorporate large-density metal particles Bearing, to achieve the suspension effect, so that the anti-radiation metal particles can be evenly distributed in the foam, so that the X-rays incident at any position and angle can be effectively blocked.

Step 200, using an electric stirring tool to fully stir the mixture obtained in step 100 at room temperature, the stirring speed is controlled at 150rpm-180rpm, and the stirring time T is not less than 2 minutes-5 minutes;

Step 300, add triethylamine to the mixture obtained in step 200 and stir at room temperature for 30 seconds to 60 seconds, the speed is controlled at 150rpm-180rpm, then add PAPI and stir for 30 seconds under the same conditions, then put it into a standard foaming device Carry out foaming treatment and time at the same time;

Step 400, when the foaming time period reaches the gel time of the preset component content, put tungsten oxide with a particle size not exceeding 70nm or lead powder with a particle size not exceeding 10um into the foamed mixture in step 300 and Stir, the mass of tungsten oxide powder or lead powder added accounts for 80%-90% of the total mass, stir for 4-5 minutes at a speed of 60rpm-80rpm, let it stand until it is completely solidified and cut and polish it into the required specification plate . The beneficial effect of adopting the protective plate 8 with the above structure is: discrete dense radiation-proof metal particles can increase the reflection times of X-rays inside the protective plate, so that the penetration path of X-rays in the protective plate is greatly increased, compared with uniform texture The single protective material has effective attenuation, as shown in Figure 7 for details; at the same time, it will greatly reduce the X-rays passing through the protective plate vertically, so that the effective radiation dose that the operator behind the protective plate can receive will be reduced Greatly reduce or even avoid radiation damage.

Example 4:

This embodiment provides another solution for replacing the protective plate 8 described in Example 3, the protective plate 8 is a multi-layer sponge flannelette containing radiation-proof metal particles or alloy particles.

The manufacturing method of the protective plate 8 of the described multi-layer sponge flannelette structure comprises the following steps:

Brush the adhesive on both sides of the sponge with a thickness of 2mm-3mm and remove the excess adhesive with a scraper, then cover the entire adhesive brushing area with finished lead powder or tungsten oxide powder to remove excess lead powder that is not effectively bonded Or tungsten oxide powder; use the same method to bond the other side of the sponge, and use it after completion;

After the viscose is air-dried naturally, brush the glue on both sides of the sponge and cover it with lead powder or tungsten oxide powder. Then place flannelettes of equal size on the sponge and treat the other side. After the treatment on both sides is completed, clean the sponge. Carry out physical pressing with the flannelette until the glue solidifies, so that the flannelettes on both sides and the sponge in the middle are bonded together to form a single-layer protective plate forming the protective plate 8 .

Compared with the straight plate described in Embodiment 3, this embodiment has better flexibility, and has better practicability for wrapping and protecting special-shaped X-ray equipment. At the same time, the protective plate 8 includes multiple layers of single-layer protective plates bonded or sewn to each other to improve the protective ability, effectively enhance the protective ability, and can be flexibly adjusted according to actual application scenarios.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (7)

1. A high energy ray protection frock for extra-high voltage station GIS equipment defect detection, its characterized in that: including installing bottom plate (2) on check out test set base (1), fixed mounting has two at least flexible stand (3) on bottom plate (2), and arbitrary flexible stand (3) top fixedly connected with horizontal pole (4) form the L type braced frame of inversion installation, all be provided with at least a set of stores pylon (5) on flexible stand (3) and horizontal pole (4), stores pylon (5) are including the U type framework (6) that are used for connecting L type braced frame to and fixed mounting be in be used for connecting lacing film mechanism (7) of guard plate (8) on the U type framework (6), guard plate (8) parcel at least or shelter from the three lateral wall of high energy ray apparatus.

2. The high-energy ray protection tool for detecting defects of extra-high voltage station GIS equipment according to claim 1, characterized in that: the hanging piece mechanism (7) comprises a hanging piece fixedly mounted on the U-shaped frame body (6), the hanging piece is plate-shaped, an avoiding hole (76) is formed in the middle of the hanging piece, a sliding groove (77) is communicated with the avoiding hole (76) and extends downwards along the length direction of the hanging piece, and the width of the sliding groove (77) is smaller than the diameter of the avoiding hole (76) or the shortest connecting line passing through the center of the avoiding hole (76);

still including connecting the fastener, it presses cap (71) and fastener body to connect the fastener including threaded connection's screw thread, the fastener body includes integrated into one piece's screw rod (72) to and separate baffle (73), spliced pole (74) and the round platform (75) that expand that connect gradually with screw rod (72), tertiary screw rod (72) are pressed cap (71) with the screw thread and are connected.

3. The high-energy ray protection tool for detecting defects of extra-high voltage station GIS equipment as claimed in claim 1 or 2, wherein the high-energy ray protection tool comprises: the protection plate (8) is a foam plate containing radiation-proof metal particles or alloy particles.

4. The high-energy ray protection tool for detecting defects of extra-high voltage station GIS equipment according to claim 1 or 2, and is characterized in that: the protection plate (8) is a multi-layer sponge flannelette containing radiation-proof metal particles or alloy particles.

5. The high-energy ray protection tool for detecting the defects of the extra-high voltage station GIS equipment according to claim 3, characterized in that: the manufacturing method of the protection plate (8) comprises the following steps:

step 100, mixing main components including isocyanate and polyol according to a preset component content with auxiliaries including a foaming agent, a stabilizer, a cross-linking agent, a catalyst, an anti-aging agent, a flame retardant and a chain extender;

step 200, fully stirring the mixture obtained in the step 100 at normal temperature by using an electric stirring tool, controlling the stirring speed to be 150-180 rpm, and controlling the stirring time T to be not less than 2-5 minutes;

step 300, adding triethylamine into the mixture obtained in the step 200, stirring at normal temperature for 30-60 seconds, controlling the rotating speed at 150-180 rpm, adding PAPI, stirring for 30 seconds under the same conditions, placing into a standard foaming device, foaming and timing;

step 400, when the foaming time period reaches the gelling time of the preset component content, placing tungsten oxide with the particle size not more than 70nm or lead powder with the particle size not more than 10 microns into the mixture foamed in the step 300 and stirring, wherein the mass of the placed tungsten oxide powder or lead powder accounts for 80% -90% of the total mass, stirring for 4-5 minutes under the condition of the rotating speed of 60-80 rpm, standing until the tungsten oxide powder or lead powder is completely solidified, cutting and polishing to obtain the plate with the required specification.

6. The high-energy ray protection tool for detecting defects of extra-high voltage station GIS equipment according to claim 4, characterized in that: the manufacturing method of the protection plate (8) comprises the following steps:

brushing mucilage glue on two sides of a sponge with the thickness of 2mm-3mm, removing redundant mucilage glue by using a scraper, covering the whole mucilage glue brushing area with finished lead powder or tungsten oxide powder, and removing redundant lead powder or tungsten oxide powder which is not effectively bonded; bonding the other side of the sponge by the same method, and then using the sponge after the bonding;

after the viscose is naturally dried, glue is sequentially coated on two sides of the sponge and lead powder or tungsten oxide powder is covered on the two sides of the sponge, flannelette with the same size is respectively arranged on the sponge and is processed on the other side of the sponge, after the two sides of the sponge are processed, the sponge and the flannelette are physically pressed until the glue is solidified, and the flannelette on the two sides and the sponge in the middle of the sponge are bonded into a whole to form a single-layer protection plate of the protection plate (8).

7. The high-energy ray protection tool for detecting defects of extra-high voltage station GIS equipment according to claim 6, characterized in that: the protection plate (8) comprises a plurality of layers of single-layer protection plates which are adhered or sewn mutually.

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