A gas solid insulation structure for GIS switchgear and GIS switchgear

Abstract

The utility model relates to the technical field of GIS switch equipment, and in particular to a gas solid insulation structure for GIS switch equipment and a GIS switch equipment, comprising a main body, a side of the main body fixedly connected with a separation component and a boosting component, and the interior of the main body fixedly connected with a GIS component; the utility model realizes effective separation of SF6 insulating gas and nitrogen mixed insulating gas by utilizing a polymer membrane body inside a polymer membrane separator; when a mixed gas with a certain pressure passes through the polymer membrane separator, nitrogen molecules will dissolve on the membrane surface during the process of passing through the high-pressure side of the membrane body, and most of the SF6 molecules will be intercepted on the high-pressure side of the membrane body, thereby achieving the purpose of separating the two gases; the polymer membrane body is used to separate the mixed gas, and the SF6 insulating gas can be effectively recovered and reused.

Description

Technical Field

[0001] The utility model relates to the technical field of GIS switch equipment, in particular to a gas solid insulation structure for GIS switch equipment and the GIS switch equipment. Background Art

[0002] GIS consists of circuit breakers, disconnectors, grounding switches, transformers, lightning arresters, busbars, connectors and outgoing line terminals. All of these devices or components are enclosed in a metal grounded casing and filled with SF6 insulating gas, so it is also called SF6 fully enclosed combination electrical equipment.

[0003] Authorization announcement number CN212626835U discloses a gas-solid insulation structure for GIS switchgear and a GIS switchgear. This patented technology uses electrochemical oxidation technology or surface coating technology to perform surface treatment on the outer surfaces of the static contact seat and the static main contact, so that an anodic oxide layer or a polytetrafluoroethylene coating is formed on the outer surface in a certain area, forming a new gas-solid insulation structure. Under the premise of not affecting the flow capacity, the purpose of improving its insulation capacity and arc extinguishing capacity and other electrical properties at a lower cost is achieved, and the performance requirements of miniaturization and high parameters of GIS switchgear are met; however, in this scheme, the SF6 insulating gas filled into the GIS switchgear is not recycled, resulting in a waste of resources, and the device is not equipped with a booster device, and insufficient pressure will lead to poor internal insulation, so that the SF6 insulating gas cannot completely fill the entire box, and the working efficiency is reduced. Therefore, a gas-solid insulation structure for GIS switchgear and a GIS switchgear are needed to improve the above problems. Utility Model Content

[0004] In order to solve the problem that the SF6 insulating gas filled in the GIS switchgear is not recycled in the existing solution, resulting in waste of resources, and the device is not equipped with a booster device, insufficient pressure will lead to poor internal insulation, so that the SF6 insulating gas cannot be completely filled in the entire box, and the working efficiency is reduced, the purpose of the utility model is to provide a gas solid insulation structure for GIS switchgear and GIS switchgear, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A gas solid insulation structure for GIS switchgear and GIS switchgear, comprising a main body, a separation component and a booster component are fixedly connected to the side of the main body, and a GIS component is fixedly connected to the inside of the main body;

[0007] The main body comprises an explosion-proof shell, and a top cover is fixedly connected to the top of the explosion-proof shell;

[0008] The separation component comprises a first connection end, a flange plate is fixedly connected to the side of the first connection end, an output pipe is fixedly connected to the side of the flange plate, and a first overflow bin and a polymer membrane separator are fixedly connected to the top of the output pipe;

[0009] The booster assembly includes a second connection end, the top of the second connection end is fixedly connected to an input pipe, the top of the input pipe is fixedly connected to a pressure gauge and a second overflow bin, and the side of the input pipe is fixedly connected to a booster pump;

[0010] The GIS component comprises a metal grounded shell, the interior of which is fixedly connected with a receiving plate, and the top of which is fixedly connected with a current transformer, a lightning arrester, a circuit breaker, an isolating switch, a connector, a grounding switch, a voltage transformer and a battery.

[0011] As a preferred solution of the utility model, the interior of the metal grounding shell is fixedly connected with an outlet terminal and a busbar, and the outlet terminal is provided with a plurality of terminals.

[0012] As a preferred solution of the utility model, the current transformer is electrically connected to the lightning arrester, and the lightning arrester is electrically connected to the circuit breaker.

[0013] As a preferred solution of the utility model, the circuit breaker is electrically connected to the isolating switch, the isolating switch is electrically connected to the connecting piece, and the connecting piece is electrically connected to the grounding switch.

[0014] As a preferred solution of the utility model, the grounding switch is electrically connected to a voltage transformer, and the voltage transformer is electrically connected to a battery.

[0015] As a preferred solution of the utility model, the bottom of the explosion-proof housing is provided with mounting holes, and four mounting holes are provided.

[0016] As a preferred solution of the utility model, a chrome-plated strip is fixedly connected to the top of the top cover, and the chrome-plated strip is arranged on the sides of the explosion-proof shell and the top cover.

[0017] As a preferred solution of the utility model, a knob switch is arranged on the top of the top cover, and external wiring terminals are fixedly connected to the side of the explosion-proof housing, and three external wiring terminals are arranged.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. In the utility model, the polymer membrane body inside the polymer membrane separator is utilized to realize the effective separation of SF6 insulating gas and nitrogen mixed insulating gas. When the mixed gas with a certain pressure passes through the polymer membrane separator, the nitrogen molecules will dissolve on the membrane surface during the process of passing through the high-pressure side of the membrane body, and most of the SF6 molecules will be intercepted on the high-pressure side of the membrane body, thereby achieving the purpose of separating the two gases. The mixed gas separation work is carried out by using the polymer membrane body, and the SF6 insulating gas can be effectively recovered and reused.

[0020] 2. In the utility model, by utilizing the impact force increased by the booster pump, the SF6 insulating gas can achieve maximum benefits, thereby improving its electrical insulation performance and excellent arc extinguishing performance. As the pressure increases, its insulation strength will continue to increase. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the separation component structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the pressure gauge of the utility model;

[0024] Figure 4 This is a schematic diagram of the GIS component structure of the utility model.

[0025] In the figure: 1. main body; 101. explosion-proof shell; 102. mounting hole; 103. top cover; 104. chrome strip; 105. knob switch; 106. external wiring terminal; 2. separation component; 201. first connection end; 202. flange plate; 203. output pipe; 204. first overflow bin; 205. polymer membrane separator; 3. booster component; 301. second connection end; 302. input pipe; 303. pressure gauge; 304. second overflow bin; 305. booster pump; 4. GIS component; 401. metal grounding shell; 402. receiving plate; 403. outlet terminal; 404. busbar; 405. current transformer; 406. lightning arrester; 407. circuit breaker; 408. isolating switch; 409. connector; 410. grounding switch; 411. voltage transformer; 412. battery. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] Example: See Figure 1-Figure 4 A gas solid insulation structure for GIS switchgear and GIS switchgear shown in the figure comprises a main body 1, a separation component 2 and a booster component 3 are fixedly connected to the side of the main body 1, and a GIS component 4 is fixedly connected to the inside of the main body 1;

[0028] In this embodiment, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the main body 1 includes an explosion-proof shell 101, the top of the explosion-proof shell 101 is fixedly connected to a top cover 103, the separation component 2 includes a first connection end 201, the side of the first connection end 201 is fixedly connected to a flange plate 202, the side of the flange plate 202 is fixedly connected to an output pipe 203, the top of the output pipe 203 is fixedly connected to a first overflow bin 204 and a polymer membrane separator 205, the booster component 3 includes a second connection end 301, the top of the second connection end 301 is fixedly connected to an input pipe 302, the top of the input pipe 302 is fixedly connected to a pressure gauge 303 and a second overflow bin 304, the side of the input pipe 302 is fixedly connected to a booster pump 305, the GIS component 4 includes a metal grounded shell 401, the interior of the metal grounded shell 401 is fixedly connected to a receiving plate 402, the top of the receiving plate 402 is fixedly connected to a current transformer 405 and a lightning arrester 405. 06, circuit breaker 407, disconnector 408, connector 409, grounding switch 410, voltage transformer 411 and battery 412, utilize the polymer membrane body inside the polymer membrane separator 205 to realize effective separation of SF6 insulating gas and nitrogen mixed insulating gas. When the mixed gas with a certain pressure passes through the polymer membrane separator 205, the nitrogen molecules will dissolve on the membrane surface during the process of passing through the high-pressure side of the membrane body, and most of the SF6 molecules will be retained on the high-pressure side of the membrane body, thereby achieving the purpose of separating the two gases. By utilizing the polymer membrane body to separate the mixed gas, the SF6 insulating gas can be effectively recovered and reused. By utilizing the impact force increased by the booster pump 305, the SF6 insulating gas can achieve maximum benefits, thereby improving its electrical insulation performance and excellent arc extinguishing performance. As the pressure increases, its insulation strength will continue to increase.

[0029] In this embodiment, refer to Figure 1 and Figure 4As shown, the metal grounding shell 401 is fixedly connected with an outlet terminal 403 and a busbar 404, and the outlet terminal 403 is provided with a plurality of current transformers 405 and a lightning arrester 406, which are electrically connected to a circuit breaker 407, which are electrically connected to an isolating switch 408, which are electrically connected to a connector 409, which are electrically connected to a grounding switch 410, which are electrically connected to a voltage transformer 411, which are electrically connected to a battery 412, and the bottom of the explosion-proof shell 101 is provided with There are four mounting holes 102, a chrome-plated strip 104 is fixedly connected to the top of the top cover 103, and the chrome-plated strip 104 is arranged on the sides of the explosion-proof shell 101 and the top cover 103. A knob switch 105 is arranged on the top of the top cover 103, and an external wiring terminal 106 is fixedly connected to the side of the explosion-proof shell 101, and there are three external wiring terminals 106. The explosion-proof shell 101 can explode when combustible gas enters the shell and is ignited by sparks, and the explosion flame is limited to the shell and cannot ignite the explosive mixture in the external environment of the shell, thereby ensuring the safety of the use environment.

[0030] In the present solution, a solid gas insulation structure for GIS switchgear and a GIS switchgear are used. When the SF6 insulating gas is used, it is transported from the outside to the input pipe 302, and after being pressurized by the booster pump 305, it flows through the second connection end 301 into the metal grounded shell 401 to perform electrical insulation and arc extinguishing. When the SF6 insulating gas inside the metal grounded shell 401 needs to be discharged, the polymer membrane body inside the polymer membrane separator 205 is used to effectively separate the SF6 insulating gas and the nitrogen mixed insulating gas, and the gas is discharged from the output pipe 203, so that the SF6 insulating gas can be recycled and reused.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas-solid insulation structure for GIS switchgear, comprising a main body (1), characterized in that: The side of the main body (1) is fixedly connected with a separation component (2) and a pressure boosting component (3), and the interior of the main body (1) is fixedly connected with a GIS component (4); The main body (1) comprises an explosion-proof housing (101), and a top cover (103) is fixedly connected to the top of the explosion-proof housing (101); The separation component (2) comprises a first connection end (201), a flange plate (202) is fixedly connected to the side of the first connection end (201), an output pipe (203) is fixedly connected to the side of the flange plate (202), and a first overflow bin (204) and a polymer membrane separator (205) are fixedly connected to the top of the output pipe (203); The boosting assembly (3) comprises a second connection end (301), the top of the second connection end (301) is fixedly connected to an input pipe (302), the top of the input pipe (302) is fixedly connected to a pressure gauge (303) and a second overflow bin (304), and the side of the input pipe (302) is fixedly connected to a boosting pump (305); The GIS component (4) comprises a metal grounding shell (401), the interior of the metal grounding shell (401) is fixedly connected to a receiving plate (402), and the top of the receiving plate (402) is fixedly connected to a current transformer (405), a lightning arrester (406), a circuit breaker (407), an isolating switch (408), a connecting piece (409), a grounding switch (410), a voltage transformer (411) and a battery (412).

2. The gas-solid insulation structure for GIS switchgear according to claim 1, characterized in that: An outlet terminal (403) and a busbar (404) are fixedly connected inside the metal grounding shell (401), and a plurality of outlet terminals (403) are provided.

3. The gas-solid insulation structure for GIS switchgear according to claim 1, characterized in that: The current transformer (405) is electrically connected to the lightning arrester (406), and the lightning arrester (406) is electrically connected to the circuit breaker (407).

4. The gas-solid insulation structure for GIS switchgear according to claim 1, characterized in that: The circuit breaker (407) is electrically connected to the isolating switch (408), the isolating switch (408) is electrically connected to the connecting member 4 (09), and the connecting member (409) is electrically connected to the grounding switch (410).

5. The gas-solid insulation structure for GIS switchgear according to claim 1, characterized in that: The grounding switch (410) is electrically connected to a voltage transformer (411), and the voltage transformer (411) is electrically connected to a battery (412).

6. The gas-solid insulation structure for GIS switchgear according to claim 1, characterized in that: The bottom of the explosion-proof housing (101) is provided with mounting holes (102), and four mounting holes (102) are provided.

7. The gas-solid insulation structure for GIS switchgear according to claim 6, characterized in that: A chrome-plated strip (104) is fixedly connected to the top of the top cover (103), and the chrome-plated strip (104) is arranged on the sides of the explosion-proof housing (101) and the top cover (103).

8. A GIS switchgear, applicable to a gas-solid insulation structure for GIS switchgear as claimed in any one of claims 1 to 7, characterized in that: A knob switch (105) is arranged on the top of the top cover (103), and an external wiring terminal (106) is fixedly connected to the side of the explosion-proof housing (101), and three external wiring terminals (106) are arranged.

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