CN213043983U

CN213043983U - High-voltage shell

Info

Publication number: CN213043983U
Application number: CN202021334809.5U
Authority: CN
Inventors: 宗建祥
Original assignee: Jiangsu Haimante Electric Co ltd
Current assignee: Jiangsu Haimante Electric Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-04-23
Anticipated expiration: 2030-07-08

Abstract

The utility model provides a high-pressure casing relates to electrical components protection technical field, which comprises a housin, be provided with sealed monitoring devices in the casing, sealed monitoring devices sets up at casing upper end inner wall, sealed monitoring devices includes cuboid sealed storehouse, sealed storehouse is the metal seal storehouse, through welded fastening to shells inner wall, the inside rectangle floating piston that is provided with of sealed storehouse, the last buoy that is fixed with of floating piston, be provided with the sign on the buoy, floating piston divide into cavity and lower cavity with sealed storehouse, be provided with expanding spring in the cavity of resorption, be provided with the through-hole on the cavity of resorption, cavity and casing intercommunication will descend to the through-hole, the internal top of epicoele is provided with the gas valve door.

Description

High-voltage shell

Technical Field

The utility model relates to an electrical components protection field, concretely relates to high-voltage shell.

Background

With the development and construction of the ultrahigh voltage line of the national power grid, the requirement for the stable operation of the power equipment is higher and higher. The Gas Insulated Switchgear (GIS), which is an important device for power generation, transmission and transformation, has the advantages of small floor area, easy maintenance, compact structure, high operation reliability and the like, but also has the problems of difficult comprehensive prediction and monitoring of heat loss, overlarge current density, large eddy current loss and the like.

The present invention relates to a high-voltage casing, and is characterized by that in the casing interior a combined electrical apparatus is placed, and the casing possesses sealing property, and is filled with protective gas, and the interior electrical apparatus element is cooled and protected, but in the interior of high-voltage casing the gas sealing property detection device is lacked, so that it is difficult to implement real-time detection of gas pressure in the casing, and when the gas is leaked in the interior, it is difficult to learn, at this moment, the interior electrical apparatus element can not be protected in time.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a novel high-pressure shell, which can solve the technical problem in the background art.

The utility model discloses a following technical scheme realizes: a high-pressure shell comprises a shell body, wherein a sealing monitoring device is arranged in the shell body, the sealing monitoring device is arranged on the inner wall of the upper end of the shell body, the sealing monitoring device comprises a cuboid sealed cabin, the sealed cabin is a metal sealed cabin and is fixed to the inner wall of the shell body through welding, a rectangular floating piston is arranged in the sealed cabin, a buoy is fixed on the floating piston, a mark is arranged on the buoy, the floating piston divides the sealed cabin into an upper cavity and a lower cavity, a telescopic spring is arranged in the lower cavity, a through hole is formed in the lower cavity, the lower cavity is communicated with the shell body through the through hole, and an air valve is arranged at the top in the upper cavity;

the glass window is arranged on the shell, and the glass window is provided with an identification line.

Preferably, the mark arranged on the buoy is a fluorescent mark, and the mark line on the glass viewing window is a fluorescent mark line.

Preferably, the gas valve includes valve head and connecting rod, valve head and connecting rod fixed connection, be provided with screw thread portion on the connecting rod, the sealed storehouse relevant position sets up the internal thread, and the connecting rod passes through the screw thread interlock to be fixed to the threaded hole on the sealed storehouse, the valve head is reducing valve head, and its upper end diameter is less than the lower extreme diameter, be provided with guide arm, sealed lid and reducing spring in the valve head, sealed lid and guide arm welded fastening, the guide arm is worn to establish in the overhead limiting plate of valve, the limiting plate is ring shape limiting plate, and its middle part is provided with the round hole, four spacing of limiting plate external connection, the inner wall welded fastening of spacing and valve head bottom.

Preferably, a sealing ring is sleeved at the joint of the valve head and the connecting rod.

Compared with the prior art, the utility model discloses set up a sealed monitoring devices on high-pressure shells inner wall, the mode through sign on the buoy and contrast scale mark detects the inside leakproofness of casing, when the atmospheric pressure in inside reduces, in time supplements, and this kind of mechanical seal monitoring mode has that stability is strong, characteristics that monitoring effect is good.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a schematic view of the connection between the limiting plate and the limiting strip.

In the figure: 1. a housing; 2. a seal monitoring device; 21. sealing the bin; 22. a floating piston; 23. a float; 231. identifying; 24. a glass viewing window; 25. a tension spring; 26. a through hole; 3. a gas valve; 31. a valve head; 32. a connecting rod; 33. a guide bar; 34. a sealing cover; 35. a variable diameter spring; 36. a limiting strip; 361. a circular hole; 362. a limiting plate; 37. and (5) sealing rings.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

A high-pressure housing 1 as shown in fig. 1-4, which includes a housing 1, a sealing monitoring device 2 is disposed in the housing 1, the sealing monitoring device 2 is disposed on an inner wall of an upper end of the housing 1, the sealing monitoring device 2 includes a rectangular sealed bin 21, the sealed bin 21 is a metal sealed bin 21 and is fixed to an inner wall of the housing 1 by welding, a rectangular floating piston 22 is disposed inside the sealed bin 21, a float 23 is fixed on the floating piston 22, a mark 231 is disposed on the float 23, the sealed bin 21 is divided into an upper cavity and a lower cavity by the floating piston 22, a telescopic spring 25 is disposed in the lower cavity, a through hole 26 is disposed on the lower cavity, the lower cavity is communicated with the housing 1 by the through hole 26, and an air valve 3 is disposed at a top portion inside the upper cavity;

the shell 1 is provided with a glass viewing window 24, and the glass viewing window 24 is provided with a mark 231 line.

The principle of the device for realizing the detection of the sealing performance is as follows: through-hole 36126 that the lower cavity of sealed storehouse 21 set up can make in gaseous entering sealed storehouse 21, the cavity goes up in sealed storehouse 21 and carries out filling gas to certain pressure through gas valve 3, externally pack gas to casing 1 and make the cavity be full of gas under the sealed storehouse, when the gaseous atmospheric pressure of cavity keeps unanimous from top to bottom, mark 231 and sign line are drawn on buoy 23 and the window glass that floating piston 22 connects, when mark 231 and sign line coincide, the atmospheric pressure in the casing 1 is required atmospheric pressure, when atmospheric pressure is insufficient, floating piston 22 drives buoy 23 and moves down, therefore mark 231 on buoy 23 can be less than the sign line, can observe through window glass, carry out filling gas protection in the casing 1. In order to prevent the bottom wall of the sealed cabin 21 from being damaged due to the contact between the floating piston 22 and the bottom wall of the sealed cabin 21, the telescopic spring 25 is arranged below the floating piston 22, and when the floating piston 22 moves downwards, the telescopic spring 25 is contacted, so that the bottom wall of the sealed cabin 21 is prevented from being contacted, and a protection effect is achieved.

Further, the mark 231 disposed on the float 23 is a fluorescent mark, and the mark line on the glass viewing window 24 is a fluorescent mark line. The observation is conveniently carried out at night.

Further, the air valve 3 comprises a valve head 31 and a connecting rod 32, the valve head 31 is fixedly connected with the connecting rod 32, the connecting rod 32 is provided with a thread part, the corresponding position of the sealed cabin 21 is provided with an internal thread, the connecting rod 32 is fixed in the threaded hole of the sealed cabin 21 through thread engagement, the valve head 31 is a variable diameter valve head 31, the diameter of the upper end of the valve head 31 is smaller than that of the lower end of the valve head, a guide rod 33, a sealing cover 34 and a reducing spring 35 are arranged in the valve head, the sealing cover 34 is welded and fixed with the guide rod 33, the guide rod 33 is arranged in a limit plate 362 on the valve head 31 in a penetrating way, the limit plate 362 is a circular limit plate 362, the middle part of the valve body is provided with a round hole 361, the limiting plate 362 fixes the guide rod 33 to ensure that the guide rod does not move up and down, the limiting plate 362 is externally connected with four limiting strips 36, and the limiting strips 36 are welded and fixed with the inner wall of the bottom of the valve head 31.

The working principle of the air valve 3 is as follows: when filling gas into the casing 1 through the gas valve 3, the sealed lid 34 of atmospheric pressure meeting extrusion downwards, because valve head 31 is reducing structure, down the diameter grow, gas can be along with the clearance between sealed lid 34 and the valve head 31 in the inside casing 1 that gets into of connecting rod 32, when stopping aerifing, inside sealed lid 34 can return under reducing spring 35 drives, blocks the air inlet of gas valve 3, in order to guarantee the leakproofness, can set up a sealing member in sealed lid 34 and gas valve 3 air inlet department.

Further, in order to ensure the sealing performance between the air valve 3 and the housing 1, a sealing ring 37 is sleeved at the joint of the valve head 31 and the connecting rod 32.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A high pressure housing comprising a housing characterized by: the sealing monitoring device is arranged on the inner wall of the upper end of the shell and comprises a cuboid sealed bin, the sealed bin is a metal sealed bin and is fixed to the inner wall of the shell through welding, a rectangular floating piston is arranged inside the sealed bin, a buoy is fixed on the floating piston and provided with a mark, the sealed bin is divided into an upper cavity and a lower cavity by the floating piston, a telescopic spring is arranged in the lower cavity, a through hole is formed in the lower cavity, the lower cavity is communicated with the shell through the through hole, and an air valve is arranged at the top in the upper cavity;

2. A high pressure housing as claimed in claim 1, wherein: the mark arranged on the buoy is a fluorescent mark, and the mark line on the glass viewing window is a fluorescent mark line.

3. A high pressure housing as claimed in claim 1, wherein: the gas valve includes valve head and connecting rod, valve head and connecting rod fixed connection, be provided with screw thread portion on the connecting rod, the sealed storehouse relevant position sets up the internal thread, and the connecting rod passes through the screw thread interlock to be fixed to the threaded hole on the sealed storehouse, the valve head is reducing valve head, and its upper end diameter is less than the lower extreme diameter, be provided with guide arm, sealed lid and reducing spring in the valve head, sealed lid and guide arm welded fastening, the guide arm is worn to establish in the overhead limiting plate of valve, the limiting plate is ring shape limiting plate, and its middle part is provided with the round hole, four spacing of limiting plate external connection, the inner wall welded fastening of spacing and valve head bottom.

4. A high pressure housing as claimed in claim 3, wherein: and a sealing ring is sleeved at the joint of the valve head and the connecting rod.