CN219371855U

CN219371855U - Explosion-proof looped netowrk cabinet

Info

Publication number: CN219371855U
Application number: CN202320607472.8U
Authority: CN
Inventors: 谢正新; 李丹; 宋华兵; 陈顶
Original assignee: Shenglong Electric Ezhou Co ltd
Current assignee: Shenglong Electric Ezhou Co ltd
Priority date: 2023-03-24
Filing date: 2023-03-24
Publication date: 2023-07-18
Anticipated expiration: 2033-03-24

Abstract

The utility model discloses an explosion-proof ring main unit, which comprises a ring main unit body, wherein an inflation tube for inflating sulfur hexafluoride gas into the ring main unit body is arranged on the side surface of the ring main unit body, an electromagnetic valve is arranged on the outer surface of the inflation tube, a sliding plate is arranged on the inner wall of the ring main unit body in a sliding manner, a plurality of springs are arranged between the upper surface of the sliding plate and the inner top wall of the ring main unit body at equal intervals, a plurality of pressure relief holes are formed in the side surface of the ring main unit body at equal intervals, and a connecting box and a gas storage box corresponding to the pressure relief holes are respectively arranged on the side surface and the upper surface of the ring main unit body. Compared with the prior art, the explosion-proof ring main unit has the advantages that the collection assembly is arranged, so that the ring main unit can effectively collect the discharged sulfur hexafluoride gas, the collection assembly is convenient to detach, the sulfur hexafluoride gas in the air bag ball can be discharged through the air release pipe, and the safety performance is high.

Description

Explosion-proof looped netowrk cabinet

Technical Field

The utility model relates to the technical field of ring main units, in particular to an explosion-proof ring main unit.

Background

The ring main unit is a group of electric equipment (high-voltage switch equipment) which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled interval ring power supply unit. The inflatable ring main unit, namely the SF6 ring main unit, is medium-voltage electrical combined equipment which can be randomly combined into multiple loops to enter and exit, has switching, connecting and protecting functions of a power system and takes a load switch as a core component and is air-insulated or gas-insulated.

The air pressure in the existing inflatable ring main unit is difficult to realize automatic depressurization by naked eyes according to the change of the air pressure in the transmission process, and the Chinese patent network bulletin number: CN217741108U discloses an effective explosion-proof inflatable looped netowrk cabinet, including the cabinet body and explosion-proof subassembly, one side of the cabinet body is provided with the intake pipe, be provided with the valve in the intake pipe, the opposite side of the cabinet body is provided with control box and cooling subassembly, the control box inlays and is equipped with a plurality of control subassemblies, explosion-proof subassembly includes the movable plate, the movable plate sets up in the inside of the cabinet body, be provided with a plurality of springs between the top surface of movable plate and the interior roof of the cabinet body, the spring is provided with six, and is rectangular distribution, one side inner wall top of the cabinet body link up and is provided with the through-hole, the through-hole is provided with two, and is horizontal parallel distribution, two the through-hole all is connected with communicating pipe, the free end of communicating pipe is connected with the buffer memory case. The utility model reduces the occurrence rate of explosion when the internal air pressure of the cabinet body is too high, and achieves the effect of cooling the interior of the cabinet body through the cooling liquid, thereby having high practicability.

According to the technical scheme, the sulfur hexafluoride gas is colorless, odorless, nontoxic and incombustible stable gas at normal temperature and normal pressure, but is actually a choking agent, and can be breathed difficultly, whetted, blue and cramped on the skin and mucous membrane under high concentration, and after 80% of sulfur hexafluoride and 20% of oxygen are inhaled for a few minutes, limbs are numb and even choked and dead, namely when the sulfur hexafluoride is discharged in a workplace, the density of the sulfur hexafluoride gas is 5 times that of the air, so that the discharged sulfur hexafluoride gas is accumulated in a place with a lower topography (the sulfur hexafluoride gas is not actively discharged out of the workplace along with the flow of the air), and when the accumulated sulfur hexafluoride gas is high in concentration, the life of personnel is seriously endangered.

Therefore, the application provides an explosion-proof ring main unit to solve the defects and the safety problems in the technology of the patent.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present utility model provides an explosion-proof ring main unit, so as to solve the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an explosion-proof looped netowrk cabinet, includes the looped netowrk cabinet main part, the side of looped netowrk cabinet main part is provided with the gas tube that is used for filling sulfur hexafluoride gas to the inside of looped netowrk cabinet main part, and the surface of gas tube is provided with electromagnetic valve, the inner wall slip of looped netowrk cabinet main part is provided with the sliding plate, and is provided with a plurality of spring between the upper surface of sliding plate and the interior roof of looped netowrk cabinet main part equidistance, a plurality of relief hole has been seted up to the side equidistance of looped netowrk cabinet main part, and side and the upper surface of looped netowrk cabinet main part are provided with respectively with relief hole corresponding connection box and gas receiver, the connection box is right opening structure, and the upper surface of connection box and the side intercommunication of gas receiver are provided with the connecting pipe, the right side of gas receiver is inlayed and is equipped with the blast pipe, and the surface of blast pipe is provided with the relief valve;

the end of blast pipe is provided with the collection subassembly that is used for collecting sulfur hexafluoride gas, collection subassembly includes threaded connection at the external screw thread pipe of blast pipe end inner wall to and set firmly the gasbag ball at the external screw thread pipe other end, collection subassembly still includes the one-way exhaust valve who sets up at external screw thread pipe surface, and inlays the gas release pipe of establishing at gasbag ball surface, the tip of gas release pipe is provided with the sealing plug.

As a still further proposal of the utility model, the outer surface of the connecting pipe is provided with a one-way air inlet valve which only allows the air of the connecting box to enter the air storage box.

As still further scheme of the utility model, the communicating pipe communicated with the outside air is embedded above the sliding plate on the inner wall of the ring main unit.

As still further scheme of the utility model, the inner wall of the ring main unit body is positioned above the sliding plate and is provided with two symmetrical first limiting plates, the lower surface of each first limiting plate is provided with a first contact switch, and the first contact switches are electrically connected with the electromagnetic valve through leads.

As a still further scheme of the utility model, the inner wall of the ring main unit body and the upper surface of the gas storage tank are provided with leakage alarm assemblies, and the leakage alarm assemblies comprise two symmetrical second limiting plates fixedly arranged below the sliding plate of the ring main unit body and a second contact switch arranged on the upper surface of the second limiting plates.

As a still further scheme of the utility model, the leakage alarming assembly further comprises a flashing alarming lamp and a buzzer alarm which are respectively fixedly arranged on the upper surface of the gas storage tank, and the second contact switch is respectively and electrically connected with the flashing alarming lamp and the buzzer alarm through wires.

Advantageous effects

The utility model provides an explosion-proof ring main unit, which has the following technical effects:

1. compared with the prior art, the explosion-proof ring main unit has the advantages that the collection assembly is arranged, so that the ring main unit can effectively collect the discharged sulfur hexafluoride gas, the collection assembly is convenient to detach, the sulfur hexafluoride gas in the air bag ball can be discharged through the air release pipe, and the safety performance is high.

2. Compared with the prior art, the explosion-proof ring main unit has the advantages that the leakage alarm assembly is arranged, when sulfur hexafluoride gas leakage occurs in the ring main unit body, the purpose of audible and visual dual alarm to workers can be achieved, and the workers can timely maintain the leaked ring main unit body.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

FIG. 2 is a schematic cross-sectional view of the present utility model.

Fig. 3 is an enlarged schematic view of the structure of fig. 1 a according to the present utility model.

The reference numerals are: 1. a ring main unit body; 2. an inflation tube; 3. an electromagnetic valve; 4. a sliding plate; 5. a spring; 6. a pressure relief hole; 7. a connection box; 8. a gas storage tank; 9. a connecting pipe; 10. an exhaust pipe; 11. a pressure release valve; 12. a collection assembly; 1201. an external threaded tube; 1202. an air bag ball; 1203. a one-way exhaust valve; 1204. a gas release pipe; 13. a one-way air inlet valve; 14. a communicating pipe; 15. a first limiting plate; 16. a first contact switch; 17. a leak alarm assembly; 1701. a second limiting plate; 1702. a second contact switch; 1703. flashing alarm lamp; 1704. and a buzzer alarm.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution: the utility model provides an explosion-proof looped netowrk cabinet, including looped netowrk cabinet main part 1, the side of looped netowrk cabinet main part 1 is provided with and is used for filling sulfur hexafluoride gas's gas tube 2 to the inside of looped netowrk cabinet main part 1, and the surface of gas tube 2 is provided with solenoid valve 3, and the inner wall slip of looped netowrk cabinet main part 1 is provided with sliding plate 4, and the equidistance is provided with a plurality of spring 5 between the upper surface of sliding plate 4 and the interior roof of looped netowrk cabinet main part 1, and the inner wall of looped netowrk cabinet main part 1 is located the top of sliding plate 4 and inlays and be equipped with communicating pipe 14 with outside air intercommunication.

A plurality of pressure relief holes 6 have been seted up to looped netowrk cabinet main part 1's side equidistance, and looped netowrk cabinet main part 1's side and upper surface are provided with respectively with pressure relief hole 6 corresponding connection case 7 and gas receiver 8, connection case 7 is right open structure, and the upper surface of connection case 7 and the side intercommunication of gas receiver 8 are provided with connecting pipe 9, the surface of connecting pipe 9 is provided with the one-way air inlet valve 13 that only supplies the gas of connection case 7 to get into the gas receiver 8 inside.

An exhaust pipe 10 is embedded in the right side surface of the gas storage tank 8, and a pressure relief valve 11 is arranged on the surface of the exhaust pipe 10;

the end of the exhaust pipe 10 is provided with a collecting assembly 12 for collecting sulfur hexafluoride gas, the collecting assembly 12 comprises an external thread pipe 1201 which is in threaded connection with the inner wall of the end of the exhaust pipe 10, an air bag ball 1202 which is fixedly arranged at the other end of the external thread pipe 1201, the collecting assembly 12 further comprises a one-way exhaust valve 1203 which is arranged on the outer surface of the external thread pipe 1201, and a deflation pipe 1204 which is embedded on the outer surface of the air bag ball 1202, and a sealing plug is arranged at the end of the deflation pipe 1204.

The inner wall of looped netowrk cabinet main part 1 is located the top of sliding plate 4 and is provided with two symmetrical first limiting plates 15, and the lower surface of first limiting plate 15 is provided with first contact switch 16, and first contact switch 16 passes through wire and electromagnetic valve 3 electric connection.

Compared with the prior art, through setting up collection subassembly 12, make this looped netowrk cabinet fill its in-process of sulfur hexafluoride through gas tube 2, when the atmospheric pressure in the looped netowrk cabinet is higher than the standard, can drive slide plate 4 and upwards move, when slide plate 4 slides to the top of pressure release hole 6, sulfur hexafluoride gas in the looped netowrk cabinet main part 1 is in pressure release hole 6 pressure release to connecting box 7 and gas receiver 8, and carry into gasbag ball 1202 through relief valve 11, make gasbag ball 1202 expand, thereby make this looped netowrk cabinet can realize effectively collecting the purpose of exhaust sulfur hexafluoride gas, and be convenient for dismantle collection subassembly 12, and can discharge sulfur hexafluoride gas in the gasbag ball 1202 through gas tube 1204, the security performance is higher, and at the in-process of pressure release, slide plate 4 contacts with the first contact switch 16 on the first limiting plate 15, the automatic control electromagnetic valve 3 closes this moment, realize carrying out the purpose of automatic closing to gas tube 2 after the sulfur hexafluoride gas in the looped netowrk cabinet main part 1 is saturated.

The inner wall of looped netowrk cabinet main part 1 and the upper surface of gas receiver 8 are provided with leak alarm subassembly 17, leak alarm subassembly 17 include set firmly at looped netowrk cabinet main part 1 two symmetrical second limiting plates 1701 that are located the below of sliding plate 4 to and set up the second contact switch 1702 at second limiting plate 1701 upper surface.

The leakage alarm assembly 17 further comprises a flashing alarm lamp 1703 and a buzzer alarm 1704 which are respectively and fixedly arranged on the upper surface of the gas storage tank 8, and the second contact switch 1702 is respectively and electrically connected with the flashing alarm lamp 1703 and the buzzer alarm 1704 through wires.

Wherein, compare with prior art, through setting up leakage alarm assembly 17, at the in-process of looped netowrk cabinet main part 1 back operation of aerifing, when the sulfur hexafluoride gas leakage appears in the looped netowrk cabinet main part 1, the atmospheric pressure in the looped netowrk cabinet main part 1 reduces this moment, drive sliding plate 4 downwardly moving, when sliding plate 4 and the second contact switch 1702 on the second limiting plate 1701 contact, this moment second contact switch 1702 automatic control buzzer siren 1704 and scintillation alarm lamp 1703 work, realize the purpose to staff's hearing and visual dual warning, the staff of being convenient for can in time maintain the looped netowrk cabinet main part 1 of leaking.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides an explosion-proof looped netowrk cabinet, includes looped netowrk cabinet main part (1), its characterized in that: the utility model discloses a ring main unit, including ring main unit (1) and gas storage box (8), ring main unit (1) is provided with side and is used for filling sulfur hexafluoride gas's gas tube (2) to the inside of ring main unit (1), and the surface of gas tube (2) is provided with electromagnetic valve (3), the inner wall slip of ring main unit (1) is provided with sliding plate (4), and equidistant a plurality of spring (5) that are provided with between the upper surface of sliding plate (4) and the interior roof of ring main unit (1), a plurality of pressure release hole (6) have been seted up to the side equidistance of ring main unit (1), and the side and the upper surface of ring main unit (1) are provided with respectively with pressure release hole (6) corresponding connection box (7) and gas storage box (8), connection box (7) are right open structure, and the upper surface of connection box (7) and the side intercommunication of gas storage box (8) are provided with connecting pipe (9), the right side of gas storage box (8) is inlayed and is equipped with blast pipe (10), and the surface of blast pipe (10) is provided with pressure release valve (11).

The end of blast pipe (10) is provided with collection subassembly (12) that are used for collecting sulfur hexafluoride gas, collection subassembly (12) are including threaded connection at external screw thread pipe (1201) of blast pipe (10) tip inner wall to and set firmly gasbag ball (1202) at the external screw thread pipe (1201) other end, collection subassembly (12) are still including setting up one-way exhaust valve (1203) at external screw thread pipe (1201) surface, and inlay gas release pipe (1204) of establishing at gasbag ball (1202) surface, the tip of gas release pipe (1204) is provided with the sealing plug.

2. An explosion-proof ring main unit according to claim 1, wherein: the outer surface of the connecting pipe (9) is provided with a one-way air inlet valve (13) which only allows the air of the connecting box (7) to enter the air storage box (8).

3. An explosion-proof ring main unit according to claim 1, wherein: the inner wall of the ring main unit body (1) is positioned above the sliding plate (4) and embedded with a communicating pipe (14) communicated with the outside air.

4. An explosion-proof ring main unit according to claim 1, wherein: the inner wall that is located sliding plate (4) of looped netowrk cabinet main part (1) is provided with two symmetrical first limiting plate (15), and the lower surface of first limiting plate (15) is provided with first contact switch (16), first contact switch (16) are through wire and electromagnetic valve (3) electric connection.

5. An explosion-proof ring main unit according to any one of claims 1-4, wherein: the utility model discloses a ring main unit, including ring main unit (1) and gas receiver (8), the upper surface of inner wall and gas receiver (8) of ring main unit (1) is provided with leakage alarm assembly (17), leakage alarm assembly (17) are including setting firmly two symmetrical second limiting plates (1701) that are located the below of sliding plate (4) in ring main unit (1) to and set up second contact switch (1702) at second limiting plate (1701) upper surface.

6. The explosion-proof ring main unit according to claim 5, wherein: the leakage alarm assembly (17) further comprises a flashing alarm lamp (1703) and a buzzer alarm (1704) which are respectively and fixedly arranged on the upper surface of the gas storage tank (8), and the second contact switch (1702) is respectively and electrically connected with the flashing alarm lamp (1703) and the buzzer alarm (1704) through wires.