CN213185260U

CN213185260U - Ring main unit pressure relief mechanism

Info

Publication number: CN213185260U
Application number: CN202022147155.1U
Authority: CN
Inventors: 蔡余敏
Original assignee: Meinuo Electric Fujian Co ltd
Current assignee: Meinuo Electric Fujian Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-05-11
Anticipated expiration: 2030-09-27

Abstract

The utility model discloses a looped netowrk cabinet pressure release mechanism, including the cabinet body, the internal air chamber that is equipped with of cabinet, the gas port has been seted up on the cabinet body surface, and cabinet body upper surface is provided with the disappointing joint of a body structure in the gas port position, and the disappointing joint is inside to be equipped with the cushion chamber, cushion chamber upper portion is equipped with the pressure disk, all is connected with the spring between second bulge and the first bulge, the fixed cover in the surface upper end in the traveller outside is equipped with the sealing washer, the notch opening has been seted up to the traveller bottom, and a plurality of blow vents have. The utility model discloses simple structure, it is not fragile, when air chamber atmospheric pressure was greater than the elasticity of spring, atmospheric pressure will act on the notch this moment to with the traveller jack-up, insulating gas will follow blow vent, cushion chamber and the discharge of disappointing hole in proper order this moment, thereby reduces the atmospheric pressure of air chamber, avoids dangerous the emergence, and whole working process is more stable, has improved the security.

Description

Ring main unit pressure relief mechanism

Technical Field

The utility model relates to a looped netowrk cabinet technical field, more specifically say, in particular to looped netowrk cabinet pressure release mechanism.

Background

In the field of power supply systems, a ring main unit is a very common electrical device. The ring main unit is an assembled interval type electrical device formed by assembling a group of high-voltage switch devices in a steel plate metal main unit body, and the core part of the ring main unit adopts a load switch or a combined device formed by the load switch and a fuse protector; the power supply network has the advantages of simple structure, small volume, low price, capability of improving power supply performance and power supply reliability and the like, and is widely applied to power supply networks in urban residential districts, high-rise buildings, large public buildings, factory enterprises and other places.

The existing ring main unit is mostly provided with a ring main unit air chamber, and insulating gas with certain pressure is filled in the ring main unit air chamber to ensure the safe operation of the ring main unit. However, the existing pressure relief device is complex in structure and easy to damage, so that gas in the air chamber is easy to leak.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a looped netowrk cabinet pressure release mechanism to overcome the defect that prior art exists.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a ring main unit pressure relief mechanism comprises a main body, an air chamber is arranged in the main body, an air port is arranged on the surface of the main body, an air relief joint of an integrated structure is arranged on the upper surface of the main body at the position of the air port, a buffer chamber is arranged inside the air relief joint, the air port is communicated with the buffer chamber and the air chamber, a pressure plate is arranged on the upper portion in the buffer chamber, four first bulges are uniformly and fixedly arranged on the outer side of the pressure plate, the inner side wall of the buffer chamber is provided with a chute opening at the position of the first bulge, the first bulges are inserted in chute openings at corresponding positions, a sliding column is movably inserted in the air port, four second bulges are uniformly and fixedly arranged on the side surface of the upper portion of the sliding column, the second bulges are movably inserted in the chute openings at corresponding positions, springs are connected between the second bulges and the first bulges, a sealing ring is fixedly sleeved on the upper end, the sealing washer is used for sealing up the gap between traveller and the gas port, the notch opening has been seted up to the traveller bottom, and a plurality of blow vents have been seted up to the inside wall upper end of notch opening, a plurality of holes of disappointing have been seted up to the joint upper surface that loses heart.

Furthermore, a threaded hole is formed in the middle of the upper surface of the air leakage joint, and a knob bolt is connected in the threaded hole in a matched mode.

Further, the first protruding portion and the pressure plate are of an integrated structure, and the second protruding portion and the sliding column are of an integrated structure.

Further, the plurality of air release holes are all located at positions outside the threaded holes.

Further, the vent is located at a position below the sealing ring.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses simple structure, it is not fragile, when electric arc trouble appears in the air chamber of looped netowrk cabinet, the gas pressure in the looped netowrk cabinet air chamber promotes suddenly, when atmospheric pressure is greater than the elasticity of spring, atmospheric pressure will act on the notch this moment, thereby push up the traveller, insulating gas will follow the blow vent in proper order this moment, cushion chamber and disappointing hole discharge, thereby reduce the atmospheric pressure of air chamber, avoid dangerous the emergence, fall to when spring elasticity hour when atmospheric pressure, this moment under the spring effort, the traveller will move down, blow vent and sealing washer will be taken in the gas port this moment, the sealing washer can avoid insulating gas to continue to discharge, whole working process is more stable, and the safety is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a structural diagram of the ring main unit pressure relief mechanism of the present invention;

fig. 2 is a view showing the structure of the platen according to the present invention.

In the figure: the air-leakage-prevention cabinet comprises a cabinet body 1, an air chamber 2, an air port 3, an air leakage joint 4, a buffer cavity 5, a pressure plate 6, a first protruding portion 7, a sliding groove opening 8, a spring 9, a sliding column 10, a second protruding portion 11, a sealing ring 12, a groove opening 13, a vent opening 14, an air leakage hole 15, a threaded hole 16 and a knob bolt 17.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

Referring to fig. 1 and 2, the utility model provides a ring main unit pressure relief mechanism, which comprises a main body 1, an air chamber 2 is arranged in the main body 1, an air port 3 is arranged on the surface of the main body 1, an air release joint 4 of an integrated structure is arranged on the upper surface of the main body 1 at the position of the air port 3, a buffer chamber 5 is arranged in the air release joint 4, the air port 3 is communicated with the buffer chamber 5 and the air chamber 2, a pressure plate 6 is arranged on the upper part in the buffer chamber 5, four first bulges 7 are uniformly and fixedly arranged on the outer side of the pressure plate 6, sliding groove openings 8 are arranged on the inner side wall of the buffer chamber 5 at the positions of the first bulges 7, the first bulges 7 are inserted in the sliding groove openings 8 at the corresponding positions, a sliding post 10 is movably inserted in the air port 3, four second bulges 11 are uniformly and fixedly arranged on the side surface of the upper part of the sliding post 10, the second bulges 11 are movably inserted in the sliding groove openings, the fixed cover in surface upper end in the outside of traveller 10 is equipped with sealing washer 12, and sealing washer 12 is located second bulge 7 below, and sealing washer 12 is used for the gap between sealed traveller 10 and the gas port 3, and notch 13 has been seted up to traveller 10 bottom, and a plurality of vents 14 have been seted up to notch 13 inside wall upper end, and a plurality of holes 15 that lose heart have been seted up to the upper surface of the joint that loses heart 4.

In this embodiment, run flat and connect 4 upper surface middle part and offered screw hole 16, the cooperation is connected with knob bolt 17 in the screw hole 16, and through changing the degree of depth that knob bolt 17 gos deep into screw hole 16, knob bolt 17 can support pressure disk 6, can change the decrement of spring 9 to change the elasticity of spring 9, can adapt to different atmospheric pressures in the air chamber 2.

In this embodiment, the first protrusion 7 and the pressure plate 6 are of an integral structure, and the second protrusion 11 and the sliding column 10 are of an integral structure.

In this embodiment, the plurality of relief holes 15 are located outside the threaded hole 16.

In this embodiment, the vent 14 is located below the seal ring 12.

The utility model discloses a theory of operation does: when the electric arc trouble appears in the air chamber 2 of looped netowrk cabinet, the gas pressure in the looped netowrk cabinet air chamber 2 promotes suddenly, when atmospheric pressure is greater than the elasticity of spring 9, atmospheric pressure will be acted on notch 13 this moment, thereby promote traveller 10, insulating gas will follow vent 14 in proper order this moment, cushion chamber 5 and disappointing hole 15 discharge, thereby reduce the atmospheric pressure of air chamber 2, avoid dangerous the emergence, fall to when spring 9 elasticity hour when the atmospheric pressure, this moment under spring 9 effort, traveller 10 will move down, vent 14 and sealing washer 12 will be received in gas port 3 this moment, sealing washer 12 can avoid insulating gas to continue to discharge.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes and modifications can be made by the owner within the scope of the appended claims, and the protection scope of the present invention should not be exceeded by the claims.

Claims

1. The utility model provides a looped netowrk cabinet pressure release mechanism, includes the cabinet body, the internal air chamber that is equipped with of cabinet, its characterized in that: the surface of the cabinet body is provided with a gas port, the upper surface of the cabinet body is provided with a gas release joint of an integrated structure at the position of the gas port, a buffer cavity is arranged inside the gas port, the gas port is communicated with the buffer cavity and the gas chamber, the upper part in the buffer cavity is provided with a pressure plate, the outer side of the pressure plate is uniformly and fixedly provided with four first bulges, the inner side wall of the buffer cavity is positioned at the positions of the first bulges and is provided with a chute port, the first bulges are inserted in chute ports of corresponding positions, a sliding column is movably inserted in the gas port, the side surface of the upper part of the sliding column is uniformly and fixedly provided with four second bulges, the second bulges are movably inserted in the chute ports of corresponding positions, springs are connected between the second bulges and the first bulges, the upper end of the outer side surface of the sliding column is fixedly sleeved with a sealing ring, the sealing ring is positioned below the, notch openings are formed in the bottom of the sliding column, a plurality of air vents are formed in the upper end of the inner side wall of each notch opening, and a plurality of air leakage holes are formed in the upper surface of the air leakage joint.

2. The ring main unit pressure relief mechanism of claim 1, wherein: the middle part of the upper surface of the air leakage joint is provided with a threaded hole, and a knob bolt is connected in the threaded hole in a matching manner.

3. The ring main unit pressure relief mechanism of claim 1, wherein: the first protruding portion and the pressure plate are of an integrated structure, and the second protruding portion and the sliding column are of an integrated structure.

4. The ring main unit pressure relief mechanism of claim 1, wherein: the plurality of air release holes are all located at the outer side positions of the threaded holes.

5. The ring main unit pressure relief mechanism of claim 1, wherein: the vent hole is positioned below the sealing ring.