CN212751619U

CN212751619U - Novel gas-insulated metal-enclosed switchgear

Info

Publication number: CN212751619U
Application number: CN202021745048.2U
Authority: CN
Inventors: 孙仕建
Original assignee: Canin Electric Group Co ltd
Current assignee: Canin Electric Group Co ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-03-19
Anticipated expiration: 2030-08-20

Abstract

The utility model discloses a novel gas insulated metal-enclosed switchgear, including shell, insulating heating pad, pressure display table and breaker, the bottom left side fixed mounting of shell has the earth connection, the internally mounted of gas cylinder case has the barrel, the surface internally mounted of gas cylinder case has the viewing aperture, the left end fixed mounting of barrel has the charging connector, the control chamber is installed to the left side top of gas cylinder case, the right-hand member fixed mounting of gaseous clean room has the gas cylinder, the top fixed mounting of gas cylinder case has the wire sleeve pipe, power gate valve is installed to the below of fixed plate, the right-hand member fixed mounting of gas cylinder case has the inlet wire sleeve pipe, the bottom fixed mounting of gas cylinder case has automatically controlled admission valve. This novel gas-insulated metal-enclosed switchgear can heat barrel and gas tank, and stabilizes the atmospheric pressure of gas tank in, makes it keep suitable atmospheric pressure, avoids the sulfur hexafluoride liquefaction to lose the ability of insulating and arc extinguishing.

Description

Novel gas-insulated metal-enclosed switchgear

Technical Field

The utility model relates to a gas insulated metal enclosed switchgear technical field specifically is a novel gas insulated metal enclosed switchgear.

Background

With the rapid development of modern social economy and modern industrial technology, the power demand is continuously increased in various industries, particularly a medium-voltage distribution system plays a role of 'starting and stopping' in the whole distribution system and occupies a very important position, so that the performance of medium-voltage distribution equipment is good and important for the safe and continuous operation of the whole power grid, and therefore gas-insulated metal closed switch equipment can be used;

however, when the existing gas-insulated metal-enclosed switchgear in the market is used, sulfur hexafluoride gas filled in the existing gas-insulated metal-enclosed switchgear is easy to liquefy at low temperature in alpine regions and can liquefy at low pressure, and the insulation and arc extinguishing capability of the liquefied sulfur hexafluoride gas is basically lost, so that a novel gas-insulated metal-enclosed switchgear is developed to solve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel gas insulated metal enclosed switchgear to solve the existing gas insulated metal enclosed switchgear on the market that proposes in the above-mentioned background art when using, its inside sulfur hexafluoride gas that fills dress liquefies easily under the low temperature in alpine region, and is in the low pressure state under same meeting liquefaction, the problem of sulfur hexafluoride gas's after the liquefaction insulation and arc extinguishing ability lose basically.

In order to achieve the above object, the utility model provides a following technical scheme: a novel gas-insulated metal-enclosed switchgear comprises a shell, an insulating heating pad, a pressure display table and a breaker, wherein the left side of the bottom of the shell is fixedly provided with a grounding wire, a gas cylinder box is arranged inside the shell, a cylinder body is arranged inside the gas cylinder box, the outer surface of the cylinder body is provided with the insulating heating pad, the inner surface of the outer surface of the gas cylinder box is provided with an observation port, the left end of the cylinder body is fixedly provided with an inflating nozzle, the pressure display table is fixedly arranged above the inflating nozzle, the upper side of the left side of the gas cylinder box is provided with an operating room, the outer surface of the top end of the operating room is provided with a gas purification room, the right end of the gas purification room is fixedly provided with a gas cylinder, the left end of the gas cylinder box is fixedly provided with an electric control pressure release valve, the top end of the gas, and the bottom fixed mounting of outlet sleeve has the fixed plate, power gate valve is installed to the below of fixed plate, and power gate valve's bottom fixed mounting has the outage ware to the bottom surface fixed surface of outage ware installs the terminal, the right-hand member fixed mounting of gas tank has the inlet wire sleeve, and inlet wire sheathed tube bottom surface mounting has supporting insulator, the bottom fixed mounting of gas tank has automatically controlled admission valve, and the barrel is installed to the bottom of automatically controlled admission valve.

Preferably, the connection mode of the cylinder body and the insulating heating pad is a sticking connection, and the outer surface of the bottom end of the insulating heating pad is attached to the shell.

Preferably, the fixed plate and the air box are connected by welding, and the cross section of the fixed plate is of an L-shaped structure.

Preferably, the connection mode of the breaker and the gas tank is welding, and the binding posts are arranged on the outer surface of the bottom end of the breaker at equal intervals.

Preferably, the wire inlet sleeve is distributed on the outer surface of the right end of the shell at equal intervals, the wire inlet sleeve penetrates through the inside of the air box, and the outer surface of the wire inlet sleeve 17 is tightly attached to the air box 10.

Preferably, the observation port and the air cylinder box are connected in a clamping manner, and the air cylinder box and the observation port form a sealing structure.

Compared with the prior art, the beneficial effects of the utility model are that: the novel gas-insulated metal-enclosed switchgear can heat a cylinder and a gas box, and stabilize the gas pressure in the gas box, so that the gas box keeps proper gas pressure, and the sulfur hexafluoride is prevented from being liquefied to lose insulating and arc extinguishing capabilities;

1. the insulating heating pads are arranged on the outer surfaces of the cylinder body and the gas tank to heat sulfur hexafluoride in the cylinder body and the gas tank, so that the sulfur hexafluoride is prevented from being liquefied at low temperature in a severe cold area and losing the insulating arc extinguishing capability to cause equipment damage;

2. the electronic control pressure relief valve is arranged on the gas box to prevent the sulfur hexafluoride in the gas box from being over-high in pressure and discharging after being purified when the pressure in the gas box is over-low, so that the environment is prevented from being polluted;

3. through installing inlet wire sleeve pipe and outlet wire sleeve pipe in inlet wire and the department of being qualified for the next round of competitions, can prevent that the electric wire from being worn and torn by the shell, damaging the electric wire, and inlet wire sleeve pipe and outlet wire sleeve pipe closely laminate gas tank, can prevent that the incasement gas from leaking, cause atmospheric pressure to hang down excessively.

Drawings

FIG. 1 is a schematic side view of the cross-sectional structure of the present invention;

FIG. 2 is a schematic view of the gas purification chamber and the exhaust port of the present invention;

FIG. 3 is a schematic front view of the present invention;

fig. 4 is the utility model discloses incoming line sleeve pipe and support insulator are connected the sectional structure sketch map.

In the figure: 1. a housing; 2. a ground line; 3. a gas cylinder box; 4. a barrel; 5. an insulating heating pad; 6. an air charging nozzle; 7. a pressure display gauge; 8. an operation chamber; 9. a gas purification chamber; 10. a gas tank; 11. an electrically controlled pressure relief valve; 12. a wire outlet sleeve; 13. a fixing plate; 14. a power gate valve; 15. an electrical disconnect; 16. a binding post; 17. a wire inlet sleeve; 18. a support insulator; 19. an electrically controlled intake valve; 20. an exhaust port; 21. a viewing port.

Detailed Description

In the following, reference will be made to the accompanying drawings in the embodiments of the present invention for clearly and completely describing the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a novel gas-insulated metal-enclosed switchgear comprises a shell 1, a grounding wire 2, an air cylinder box 3, a cylinder body 4, an insulating heating pad 5, an inflating valve 6, a pressure display meter 7, an operation chamber 8, a gas purification chamber 9, an air cylinder box 10, an electric control pressure relief valve 11, a wire outlet sleeve 12, a fixing plate 13, a power supply gate valve 14, a power breaker 15, a wiring terminal 16, a wire inlet sleeve 17, a supporting insulator 18, an electric control air inlet valve 19, an exhaust port 20 and an observation port 21, wherein the grounding wire 2 is fixedly installed on the left side of the bottom end of the shell 1, the air cylinder box 3 is arranged inside the shell 1, the cylinder body 4 is installed inside the air cylinder box 3, the insulating heating pad 5 is installed on the outer surface of the cylinder body 4, the observation port 21 is installed inside the outer surface of the air cylinder box 3, the inflating valve 6 is fixedly installed at the left end of the cylinder body 4, the pressure display meter 7 is, and the top surface of the operation room 8 is provided with a gas purification room 9, the right end of the gas purification room 9 is fixedly provided with a gas box 10, the left end of the gas box 10 is fixedly provided with an electric control pressure release valve 11, the top end of the gas purification room 9 is fixedly provided with an exhaust port 20, the top end of the gas box 10 is fixedly provided with a wire outlet sleeve 12, the bottom end of the wire outlet sleeve 12 is fixedly provided with a fixed plate 13, a power supply gate valve 14 is arranged below the fixed plate 13, the bottom end of the power supply gate valve 14 is fixedly provided with an interrupter 15, the bottom surface of the interrupter 15 is fixedly provided with a binding post 16, the right end of the gas box 10 is fixedly provided with a wire inlet sleeve 17, the bottom surface of the wire inlet sleeve 17 is provided with a supporting insulator 18, the bottom end of the gas box 10.

As shown in fig. 1, the connection mode of the cylinder 4 and the insulating heating pad 5 is a bonding connection, and the outer surface of the bottom end of the insulating heating pad 5 is attached to the shell 1, so that the cylinder 4 can be heated, and the sulfur hexafluoride is prevented from being liquefied at low temperature and losing insulating and arc extinguishing capabilities;

as shown in fig. 1, the connection mode between the middle fixing plate 13 and the gas tank 10 is welding, and the cross section of the fixing plate 13 is in an "L" shape, so that the weight of the outgoing line sleeve 12 is borne, and the power supply gate valve 14 is prevented from being damaged due to the falling of the outgoing line sleeve 12;

as shown in fig. 1, the connection mode of the interrupter 15 and the gas tank 10 is welding, and the binding posts 16 are arranged on the outer surface of the bottom end of the interrupter 15 at equal intervals, so that the welding ensures the stability of the interrupter 15 in the gas tank 10, and the binding posts 16 are arranged at equal intervals to facilitate wiring;

as shown in fig. 1 and 4, the wire inlet sleeves 17 are distributed on the outer surface of the right end of the housing 1 at equal intervals, the wire inlet sleeves 17 penetrate through the inside of the gas box 10, the outer surface of the wire inlet sleeves 17 is tightly attached to the gas box 10, the sealing performance of the gas box 10 can be ensured, and the wire inlet sleeves 17 can prevent the housing 1 from damaging wires;

as shown in fig. 1 and 3, the connection mode of the observation port 21 and the gas cylinder case 3 is a snap connection, and the gas cylinder case 3 and the observation port 21 form a sealing structure, so that the value of the pressure display table 7 can be observed conveniently, the opening times of the gas cylinder case 3 can be reduced, and the heat loss can be reduced.

The working principle is as follows: when the novel gas insulated metal enclosed switchgear is used, firstly, a grounding wire 2 at the bottom end of a shell 1 is fixed, an incoming wire penetrates through an incoming wire sleeve 17 and then is connected to a binding post 16 on the surface of an interrupter 15, an outgoing wire penetrates through an outgoing wire sleeve 12 and is fixed, and a power supply gate valve 14 is controlled by the interrupter 15 to be switched on and off;

then, the gas cylinder box 3 is opened, the inflating nozzle 6 is connected to inflate the cylinder 4, the electronic control air inlet valve 19 is opened to inflate the gas cylinder box 10, the electronic control air inlet valve 19 is closed after the gas cylinder box 10 reaches the specified pressure, the cylinder 4 is inflated, the pressure display meter 7 is observed through the observation port 21, the inflation of the cylinder 4 can be stopped when the pressure display meter 7 reaches the specified pressure, the gas in the cylinder 4 can be supplemented when the pressure in the gas cylinder box 10 is too low, and the gas is released into the gas purification chamber 9 through the electronic control pressure release valve 11 to be purified when the pressure in the gas cylinder box 10 is too high and is discharged through the exhaust port 20;

after the air pressure in the air box 10 reaches the proper air pressure after adjustment, when the temperature is too low, the insulating heating pad 5 is started to heat the cylinder 4 and the air box 10, and the operation of the electrically controlled pressure release valve 11 and the electrically controlled air inlet valve 19 are all required to be operated in the operation chamber 8, which is the whole process of using the novel gas-insulated metal-enclosed switchgear, and the content which is not described in detail in the specification belongs to the prior art which is well known to a person skilled in the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel gas-insulated metal-enclosed switchgear, includes shell (1), insulating heating pad (5), pressure display table (7) and breaker (15), its characterized in that: the ground wire (2) is fixedly mounted on the left side of the bottom end of the shell (1), the air cylinder box (3) is arranged inside the shell (1), the barrel (4) is mounted inside the air cylinder box (3), the insulating heating pad (5) is mounted on the outer surface of the barrel (4), the observation port (21) is mounted inside the outer surface of the air cylinder box (3), the inflating nozzle (6) is fixedly mounted at the left end of the barrel (4), the pressure display meter (7) is fixedly mounted above the inflating nozzle (6), the operating room (8) is mounted above the left side of the air cylinder box (3), the gas purifying room (9) is mounted on the outer surface of the top end of the operating room (8), the air cylinder (10) is fixedly mounted at the right end of the gas purifying room (9), the electric control pressure release valve (11) is fixedly mounted at the left end of the air cylinder (10), and the exhaust port (20) is fixedly mounted at the top end of, the utility model discloses a cable breaker, including gas tank (10), the top fixed mounting of gas tank (10) has outlet sleeve pipe (12), and the bottom fixed mounting of outlet sleeve pipe (12) has fixed plate (13), power gate valve (14) are installed to the below of fixed plate (13), and the bottom fixed mounting of power gate valve (14) has outage ware (15) to the bottom fixed surface of outage ware (15) installs terminal (16), the right-hand member fixed mounting of gas tank (10) has inlet wire sleeve pipe (17), and the bottom surface mounting of inlet wire sleeve pipe (17) has supporting insulator (18), the bottom fixed mounting of gas tank (10) has automatically controlled admission valve (19), and barrel (4) are installed to the bottom of automatically controlled admission valve (19).

2. The new gas insulated metal enclosed switchgear according to claim 1, characterized in that: the connection mode of barrel (4) and insulating heating pad (5) is for pasting the connection, and the bottom surface of insulating heating pad (5) laminates with shell (1).

3. The new gas insulated metal enclosed switchgear according to claim 1, characterized in that: the fixing plate (13) and the air box (10) are connected in a welding mode, and the cross section of the fixing plate (13) is of an L-shaped structure.

4. The new gas insulated metal enclosed switchgear according to claim 1, characterized in that: the connection mode of the breaker (15) and the gas tank (10) is welding, and the binding posts (16) are arranged on the outer surface of the bottom end of the breaker (15) at equal intervals.

5. The new gas insulated metal enclosed switchgear according to claim 1, characterized in that: the wire inlet sleeve (17) is distributed on the outer surface of the right end of the shell (1) at equal intervals, the wire inlet sleeve (17) penetrates through the inside of the gas box (10), and the outer surface of the wire inlet sleeve (17) is tightly attached to the gas box (10).

6. The new gas insulated metal enclosed switchgear according to claim 1, characterized in that: the observation port (21) and the air cylinder box (3) are connected in a clamping manner, and the air cylinder box (3) and the observation port (21) form a sealing structure.