A high-enclosed GIS high-voltage switch shell

Abstract

The application provides a high-enclosed GIS high-voltage switch shell applied to the field of GIS high-voltage switches, wherein the cooperation of a gas storage balloon and a sealing structure is utilized, when SF6 gas leakage occurs in the switch cabinet shell, the SF6 gas stored in the gas storage balloon is immediately released to play a gas pressure supplementing effect, the SF6 gas loss caused by the leakage in the switch cabinet shell is supplemented, the insulation and arc extinguishing effect in the switch cabinet shell is ensured, meanwhile, the gas storage balloon shrinks to drive the first sealing gasket to be close to the second sealing gasket, the second sealing gasket plays a supplemental sealing effect on the damaged second sealing gasket, then the high sealing property of the switch cabinet shell is ensured from the inside and outside, meanwhile, when the first sealing gasket and the second sealing gasket are close to each other, the material strip is crushed by the extrusion effect, the internal sealing glue and pigment powder are released, the sealing and plugging effect is strengthened, the connection position of the first sealing gasket and the second sealing gasket changes in color, and the prompting effect is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of GIS high-voltage switches, in particular to a high-closed GIS high-voltage switch shell. BACKGROUND

[0002] The GIS high-voltage switch is a high-voltage disconnector filled with SF6 gas as insulation and arc extinguishing medium, the high-voltage GIS disconnector mainly functions to isolate the high-voltage GIS primary circuit, the shell adopts an aluminum casting shell, shielding covers are arranged at internal moving and static contacts, in addition, since the induced magnetic field on the GIS shell is very small, the eddy current loss is very small, the electric energy loss is reduced, and the GIS high-voltage switch is widely applied.

[0003] In the prior art, the inside of the GIS high-voltage switch shell is single-sealed on the shell surface by means of a sealing rubber gasket, however, with the influence of the service time and the environmental temperature, the sealing performance of the sealing rubber gasket is reduced, the SF6 gas in the GIS high-voltage switch shell escapes, the SF6 gas content in the GIS high-voltage switch shell is reduced, the insulation and arc extinguishing effect is weakened, and the circuit safety accident in the GIS high-voltage switch shell is easily caused.

[0004] Therefore, the application provides a high-closed GIS high-voltage switch shell, which can timely take corresponding measures to improve the sealing performance of the GIS high-voltage switch shell and ensure the circuit safety in the GIS high-voltage switch shell when the sealing rubber gasket on the surface of the GIS high-voltage switch shell leaks. SUMMARY

[0005] The application aims to supplement the leaked SF6 gas in time when the surface sealing gasket of the GIS high-voltage switch shell fails, ensure the effective insulation and arc extinguishing effect of the SF6 gas in the GIS high-voltage switch shell, and supplement and color the sealing failure position on the outside of the shell, so as to achieve the sealing effect and prompt effect, compared with the prior art, a high-closed GIS high-voltage switch shell is provided, which comprises a switch cabinet shell and a sealing structure, the front of the switch cabinet shell is provided with a door frame, a sealing door body is installed in the door frame through a hinge, the thickness of the sealing door body is less than the width of the door frame, and the outer frame of the sealing door body is sleeved with the sealing structure, the sealing structure comprises a first sealing gasket, a magnetic gasket, a second sealing gasket and a material strip, the outer frame of the sealing door body is sleeved with the first sealing gasket, the inner wall of the door frame is provided with the second sealing gasket in front of the first sealing gasket, the surface of the first sealing gasket close to the second sealing gasket is connected with the magnetic gasket, and the surface of the second sealing gasket close to the first sealing gasket is embedded with the material strip, the inner wall of the switch cabinet shell is symmetrically provided with a pumkin-shaped gas storage balloon, and the inside of the switch cabinet shell and the gas storage balloon are filled with SF6 gas, and the surface of the gas storage balloon is provided with an elastic magnetic strip which is attracted to the magnetic gasket.

[0006] Further, the outer surface of the first sealing gasket is provided with an isolation film, and the outer surface of the isolation film is glued and fixed to the inner wall of the door frame.

[0007] Further, the inside of the material strip is provided with a partition plate, the inside of the material strip is filled with sealing glue and pigment powder, and the sealing glue and the pigment powder are located on both sides of the partition plate.

[0008] Further, the surface of the magnetic gasket close to the material strip is provided with a pattern, and the material strip is made of brittle material.

[0009] Further, the inside of the pigment powder is mixed with lime particles, and the partition plate is made of waterproof paperboard.

[0010] Further, the gas pressure inside the gas storage balloon is the same as the gas pressure inside the switch cabinet shell, the surface of the gas storage balloon is covered with a temperature isolation cover outside the elastic magnetic strip, and an exhaust pipe is installed through the surface of the gas storage balloon.

[0011] Further, the inside of the exhaust pipe is provided with a one-way valve and a sealing film outside the one-way valve, the inside of the sealing film is provided with a circular easy-to-tear seam, and the tail end of the exhaust pipe is threadedly connected with a sealing plug.

[0012] Further, the cross-sectional dimensions of the first sealing gasket and the second sealing gasket are the same, and there is a spacing of 0.5-1.5 cm between the first sealing gasket and the second sealing gasket.

[0013] Further, the distance between the gas storage balloon and the door frame is less than the distance between the midpoint of the switch cabinet shell and the door frame.

[0014] Further, the elastic magnetic strip is arranged on the surface of the lower end of the gas storage balloon, and the connection point of the elastic magnetic strip and the gas storage balloon is located in the middle section of the elastic magnetic strip, and the two ends of the elastic magnetic strip are in contact with the surface of the gas storage balloon.

[0015] Compared with the prior art, the advantages of the present application are:

[0016] (1) When SF6 gas leakage occurs inside the switch cabinet shell, the SF6 gas stored in the gas storage balloon is immediately released to supplement the gas pressure, providing compensation for the lack of SF6 gas inside the switch cabinet shell caused by leakage, ensuring the insulation and arc extinguishing effect inside the switch cabinet shell, and at the same time, the gas storage balloon shrinks, driving the first sealing gasket to adhere to the second sealing gasket, providing a supplemental sealing effect for the damaged second sealing gasket, thereby ensuring the high sealing performance of the switch cabinet shell from the inside and outside.

[0017] (2) The isolation film covers the surface of the first sealing gasket, providing a dustproof and corrosion-resistant protection effect, and cooperating with the first sealing gasket to provide a waterproof and dustproof shielding effect for the second sealing gasket before it is damaged, preventing external foreign matter from damaging the second sealing gasket and prolonging the service life of the second sealing gasket.

[0018] (3) When the first sealing gasket and the second sealing gasket are close to each other, the material strip is crushed by the extrusion effect, and the internal sealing glue and pigment powder are released. The sealing glue can strengthen the connection between the first sealing gasket and the second sealing gasket, thereby strengthening the sealing and plugging effect, and at the same time, the pigment powder is mixed with the sealing glue, causing the connection between the first sealing gasket and the second sealing gasket to change color, so that the worker can understand the position of the worn second sealing gasket on the surface of the switch cabinet shell through the color change.

[0019] (4) To ensure the normal bonding of the sealing glue, when the pigment powder is released, the internal lime particles are mixed with the water in the sealing glue to release heat, promoting the solidification of the sealing glue, so as to avoid the difficulty of fully solidifying the sealing glue in a low temperature state. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall view of the present application;

[0021] Figure 2 is the door frame, sealing door body and sealing structure installation view of the present application;

[0022] Figure 3 is the sealing structure assembly view of the present application;

[0023] Figure 4 Assembling view of the gas storage balloon of the present application;

[0024] Figure 5 Cross-sectional view of the door frame and sealing structure of the present application;

[0025] Figure 6 Schematic view of the gas storage balloon of the present application in the state of releasing additional gas;

[0026] Figure 7 Schematic view of the arrangement of the first sealing washer and the second sealing washer of the gas storage balloon of the present application before and after releasing gas;

[0027] Figure 8 Schematic view of the material strip of the present application before and after being pressed by the first sealing washer and the second sealing washer;

[0028] Figure 9 Internal view of the material strip of the present application;

[0029] Figure 10 Schematic view of the release state of the pigment powder, sealing glue and lime particles inside the material strip of the present application.

[0030] Explanation of the reference numerals in the figures:

[0031] 1, switch cabinet shell; 11, door frame; 2, sealing door body; 3, gas storage balloon; 31, elastic magnetic strip; 32, temperature insulation cover; 33, exhaust pipe; 331, sealing film; 332, one-way valve; 4, sealing structure; 41, first sealing washer; 42, magnetic washer; 43, second sealing washer; 44, material strip; 411, isolation film; 441, pigment powder; 442, partition; 443, sealing glue; 444, lime particles. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] First embodiment:

[0034] The present application provides a high-closed GIS high-voltage switch shell, please refer to Figures 1-6The utility model provides a sealed switch cabinet, including switch cabinet shell 1 and sealing structure 4, the front of switch cabinet shell 1 is equipped with door frame 11, the inside of door frame 11 is equipped with sealing door body 2 through the hinge, and the thickness of sealing door body 2 is less than the width of door frame 11, the outer frame of sealing door body 2 is equipped with sealing structure 4, sealing structure 4 includes a sealing washer 41, magnetic washer 42, second sealing washer 43 and material strip 44, the outer frame of sealing door body 2 is equipped with a sealing washer 41, the inner wall of door frame 11 is equipped with second sealing washer 43 in front of a sealing washer 41, the surface of a sealing washer 41 close to second sealing washer 43 is connected with magnetic washer 42, the surface of second sealing washer 43 close to a sealing washer 41 is embedded with material strip 44, the inner wall of switch cabinet shell 1 is equipped with the gourd-shaped gas storage balloon 3 symmetrically, and the inside of switch cabinet shell 1 and gas storage balloon 3 are filled with SF6 gas, and the surface of gas storage balloon 3 is arranged with the elastic magnetic strip 31 that is mutually attracted with magnetic washer 42.

[0035] Specifically, when SF6 gas leakage occurs in the inside of switch cabinet shell 1, the gas pressure in the inside of switch cabinet shell 1 is reduced, at this time, the SF6 gas stored in gas storage balloon 3 is released immediately to play the effect of gas pressure supplement, provides the supplement for the SF6 gas loss caused by leakage in the inside of switch cabinet shell 1, guarantees the insulation arc extinguishing effect in the inside of switch cabinet shell 1, simultaneously, gas storage balloon 3 shrinks, and then drives the surface elastic magnetic strip 31 to be concave, at this time, magnetic washer 42 is stressed by being mutually attracted with elastic magnetic strip 31 and then drives a sealing washer 41 to adhere close to second sealing washer 43, plays the effect of supplementary sealing to the damaged second sealing washer 43, and then from inside and outside, guarantees the high sealing property of switch cabinet shell 1.

[0036] Please refer to Figure 5 、 Figure 7 and Figure 8 The outer surface of a sealing washer 41 is arranged with isolation film 411, and the outer surface of isolation film 411 is glued and fixed with the inner wall of door frame 11.

[0037] Specifically, isolation film 411 covers the surface of a sealing washer 41, plays the protective effect of dustproof and anticorrosion, and cooperates with a sealing washer 41 to provide the shielding effect of waterproof and dustproof for second sealing washer 43, prevents external foreign matter from damaging second sealing washer 43, prolongs the service life of second sealing washer 43, when a sealing washer 41 is close to second sealing washer 43, isolation film 411 is stripped off, so that a sealing washer 41 can be completely exposed and then plays the better sealing effect.

[0038] Please refer to Figure 9 and Figure 10The inside of the material strip 44 is arranged with a partition plate 442, the inside of the material strip 44 is filled with sealing glue 443 and pigment powder 441, and the sealing glue 443 and the pigment powder 441 are located on both sides of the partition plate 442.

[0039] Specifically, when the first sealing gasket 41 and the second sealing gasket 43 are close to each other, the material strip 44 is crushed by extrusion, and the sealing glue 443 and the pigment powder 441 in the inside are released. The sealing glue 443 can strengthen the connection between the first sealing gasket 41 and the second sealing gasket 43, thereby strengthening the sealing plugging effect. At the same time, the pigment powder 441 mixes with the sealing glue 443, so that the connection between the first sealing gasket 41 and the second sealing gasket 43 changes color, so that the worker can understand the position of the second sealing gasket 43 worn on the surface of the switch cabinet shell 1 through the color change.

[0040] The surface of the magnetic gasket 42 close to the material strip 44 is arranged with a pattern, and the material strip 44 is made of brittle material.

[0041] Specifically, the pattern can strengthen the friction when the magnetic gasket 42 and the material strip 44 contact, thereby ensuring that the brittle material strip 44 can be crushed when the first sealing gasket 41 and the second sealing gasket 43 are close to each other, so that the contents in the inside are released.

[0042] The inside of the pigment powder 441 is mixed with lime particles 444, and the partition plate 442 is made of waterproof paperboard.

[0043] Specifically, in order to ensure the normal gluing of the sealing glue 443, when the pigment powder 441 is released, the lime particles 444 in the inside mix with the water in the sealing glue 443 to release heat, so as to promote the solidification of the sealing glue 443, so as to avoid that the sealing glue 443 is difficult to fully solidify in a low temperature state.

[0044] Please refer to Figure 4 The inside of the gas storage balloon 3 is filled with gas with the same pressure as the inside of the switch cabinet shell 1, the surface of the gas storage balloon 3 is covered with a temperature insulation cover 32 located outside the elastic magnetic strip 31, and the surface of the gas storage balloon 3 is penetrated and installed with an exhaust pipe 33.

[0045] Specifically, the use of the temperature insulation cover 32 can avoid the change of the shape of the gas storage balloon 3 caused by the change of the temperature in the inside of the switch cabinet shell 1, thereby ensuring that the collapse deformation of the elastic magnetic strip 31 only occurs when the gas storage balloon 3 supplements the gas in the inside of the switch cabinet shell 1.

[0046] The inside of the exhaust pipe 33 is installed with a one-way valve 332 and a sealing film 331 located outside the one-way valve 332, and the inside of the sealing film 331 is provided with a circular easy-to-tear seam. The tail end of the exhaust pipe 33 is threadedly connected with a sealing plug.

[0047] Specifically, after the sealing plug is removed, the gas in the gas storage balloon 3 will not be released due to the same air pressure, but when gas leakage occurs inside the switch cabinet shell 1, the gas in the gas storage balloon 3 is released unidirectionally through the exhaust pipe 33 to supplement the leaked gas inside the switch cabinet shell 1, and in this process, the gas flow released in the gas storage balloon 3 impacts the tear seam, thereby breaking the sealing film 331, so that the gas in the gas storage balloon 3 can be smoothly released and supplemented into the switch cabinet shell 1.

[0048] The cross-sectional size of the first sealing gasket 41 and the second sealing gasket 43 is the same, and there is a 1.5 cm spacing between the first sealing gasket 41 and the second sealing gasket 43.

[0049] Specifically, the same cross-sectional size allows the subsequent first sealing gasket 41 and second sealing gasket 43 to overlap each other, thereby compensating for the gap caused by wear of the second sealing gasket 43, and the spacing between the first sealing gasket 41 and the second sealing gasket 43 allows the first sealing gasket 41 wrapped with the isolation film 411 to provide shielding and protection for the second sealing gasket 43.

[0050] The distance between the gas storage balloon 3 and the door frame 11 is less than the distance between the midpoint of the switch cabinet shell 1 and the door frame 11.

[0051] Specifically, the installation position of the gas storage balloon 3 is close to the magnetic gasket 42, avoiding the influence of the distance between the elastic magnetic strip 31 and the magnetic gasket 42 on the stable magnetic attraction between the two.

[0052] The arrangement position of the elastic magnetic strip 31 is located on the surface of the lower end of the gas storage balloon 3, and the connection point of the elastic magnetic strip 31 and the gas storage balloon 3 is located at the middle segment of the elastic magnetic strip 31, and the two ends of the elastic magnetic strip 31 are in a state of adhering contact with the surface of the gas storage balloon 3.

[0053] Specifically, the two ends of the elastic magnetic strip 31 are not fixedly connected with the surface of the gas storage balloon 3, so that the elastic magnetic strip 31 can synchronously collapse when the gas storage balloon 3 shrinks.

[0054] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes within the technical scope disclosed in the present application according to the technical solution and improvement concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A high-enclosed GIS high-voltage switch housing comprising a switchgear housing (1) and a sealing structure (4), characterized in that The front of the switch cabinet shell (1) is provided with a door frame (11), the inside of the door frame (11) is provided with a sealing door body (2) through a hinge, the thickness of the sealing door body (2) is less than the width of the door frame (11), the outer frame of the sealing door body (2) is sleeved with a sealing structure (4), the sealing structure (4) comprises a first sealing gasket (41), a magnetic gasket (42), a second sealing gasket (43) and a material strip (44), the outer frame of the sealing door body (2) is sleeved with the first sealing gasket (41), the inner wall of the door frame (11) is provided with the second sealing gasket (43) in front of the first sealing gasket (41), the surface of the first sealing gasket (41) close to the second sealing gasket (43) is connected with the magnetic gasket (42), the surface of the second sealing gasket (43) close to the first sealing gasket (41) is embeddedly connected with the material strip (44), the inner wall of the switch cabinet shell (1) is symmetrically provided with a calabash-shaped gas storage balloon (3), and the inside of the gas storage balloon (3) and the switch cabinet shell (1) is filled with SF6 gas, and the surface of the gas storage balloon (3) is provided with an elastic magnetic strip (31) which is mutually attracted with the magnetic gasket (42). The inside of the material strip (44) is provided with a partition plate (442), the inside of the material strip (44) is filled with sealing glue (443) and pigment powder (441), and the sealing glue (443) and the pigment powder (441) are located on the two sides of the partition plate (442), the inside of the pigment powder (441) is mixed with lime particles (444), and the partition plate (442) is made of waterproof paperboard. The gas pressure inside the gas storage balloon (3) is the same as the gas pressure inside the switch cabinet shell (1), the surface of the gas storage balloon (3) is covered with a temperature insulation cover (32) outside the elastic magnetic strip (31), the surface of the gas storage balloon (3) is provided with an exhaust pipe (33), the inside of the exhaust pipe (33) is provided with a one-way valve (332) and a sealing film (331) outside the one-way valve (332), and the inside of the sealing film (331) is provided with a circular easy-to-tear seam, and the tail end of the exhaust pipe (33) is threadedly connected with a sealing plug.

2. The high-enclosed GIS high-voltage switch housing according to claim 1, characterized in that, The outer surface of the first sealing gasket (41) is provided with an isolation film (411), and the outer surface of the isolation film (411) is glued and fixed to the inner wall of the door frame (11).

3. The high-enclosed GIS high-voltage switch housing according to claim 1, characterized in that, The surface of the magnetic gasket (42) close to the material strip (44) is provided with a pattern, and the material strip (44) is made of brittle material.

4. The high-enclosed GIS high-voltage switch housing according to claim 1, characterized in that, The cross-sectional dimensions of the first sealing gasket (41) and the second sealing gasket (43) are the same, and there is a spacing of 0.5-1.5 cm between the first sealing gasket (41) and the second sealing gasket (43).

5. The high-enclosed GIS high-voltage switch housing according to claim 1, characterized in that, The distance between the gas storage balloon (3) and the door frame (11) is less than the distance between the midpoint of the switch cabinet shell (1) and the door frame (11).

6. The high-enclosed GIS high-voltage switch housing according to claim 1, characterized in that The elastic magnetic strip (31) is arranged on the surface of the lower end of the gas storage balloon (3), and the connecting point of the elastic magnetic strip (31) and the gas storage balloon (3) is located at the middle section of the elastic magnetic strip (31), and the two ends of the elastic magnetic strip (31) are in a close contact state with the surface of the gas storage balloon (3).

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