Compact environment-friendly gas inflation ring main unit

Abstract

The utility model belongs to the technical field of inflatable ring main units, and particularly relates to a compact environment-friendly gas inflatable ring main unit which comprises a cabinet body, a sealed cabin is fixedly connected to the inner wall of the cabinet body, a pressure gauge is arranged on the outer wall of the sealed cabin, an observation opening is formed in the sealed cabin, a pressure relief device is arranged on the sealed cabin, the pressure relief device comprises an inflation pipe, and the inflation pipe is provided with a gas inlet. The inflation pipe penetrates through the sealed cabin and is fixedly connected with the sealed cabin. According to the compact type environment-friendly gas inflation ring main unit, when the air pressure in the sealed cabin is too large, an air bag expands, in the process, the air bag extrudes a pressing rod to enable the pressing rod to move downwards and extrude a sliding rod, in the process, the sliding rod extrudes a sliding block to enable the sliding block to slide, and therefore the sealing cabin is sealed. When the sliding block slides for a certain distance, the air outlet hole can coincide with the through groove at the moment, air in the sealed cabin is exhausted from the pressure relief pipe at the moment, and therefore the purpose of automatic pressure relief is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-filled ring main unit, in particular to a compact environment-friendly gas-filled ring main unit. Background Art

[0002] The gas-filled cabinet is a switchgear with gas as the insulating medium. It can be divided into primary distribution equipment and secondary distribution equipment according to the application field. The rated current is usually less than or equal to 630A. Due to the compact structure and large size of the gas-filled cabinet, many ring network cabinets in the current market use gas-filled cabinets.

[0003] At present, when the internal air pressure of most existing gas-filled ring main unit is too high, manual pressure relief is often required and self-pressure relief is not possible. In view of this, we propose a compact and environmentally friendly gas-filled ring main unit. Utility Model Content

[0004] The main purpose of the utility model is to provide a compact environmentally friendly gas-filled ring network cabinet, which can solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model proposes a compact environmentally friendly gas-filled ring main unit, comprising a cabinet, a sealed cabin is fixedly connected to the inner wall of the cabinet, a pressure device is arranged on the outer wall of the sealed cabin, an observation port is opened in the sealed cabin, and a pressure relief device is arranged on the sealed cabin, and the pressure relief device comprises:

[0006] An inflation pipe, the inflation pipe passes through the sealed cabin and is fixedly connected to the sealed cabin;

[0007] A pressure relief pipe, the pressure relief pipe passes through the sealed cabin and is fixedly connected to the sealed cabin;

[0008] and a transverse pipe, wherein the transverse pipe passes through the sealed cabin and is fixedly connected to the sealed cabin.

[0009] Preferably, the inflation tube is provided with an air inlet, the inflation tube is slidably connected to a piston block, the outer wall of the piston block is fixedly connected to a spring 1, and one end of the spring 1 away from the piston block is fixedly connected to the inner wall of the inflation tube.

[0010] Preferably, a clamping block is slidably connected to the inner wall of the inflation tube, and a spring 2 is fixedly connected to the outer wall of the clamping block. One end of the spring 2 away from the clamping block is fixedly connected to the inner wall of the inflation tube. The purpose of designing the clamping block is to clamp the inflation head of the nitrogen tube to prevent the nitrogen tube from falling off the inflation tube under the action of air pressure during the inflation process.

[0011] Preferably, the pressure relief pipe is provided with a through groove, the inner wall of the pressure relief pipe is slidably connected with a sliding block, and the sliding block is provided with an air outlet.

[0012] Preferably, a spring three is fixedly connected to the outer wall of the sliding block, and one end of the spring three away from the sliding block is fixedly connected to the inner wall of the pressure relief pipe.

[0013] Preferably, the transverse pipe is penetrated by the air intake pipe and is fixedly connected to the air intake pipe, and the bottom end of the air intake pipe is sealed and connected to an airbag.

[0014] Preferably, a pressure rod is provided under the airbag, the pressure rod is slidably connected to the inner wall of the transverse tube, one end of a spring four is fixedly connected to the outer wall of the pressure rod, the other end of the spring four is fixedly connected to the inner wall of the transverse tube, and the end of the pressure rod is fixedly connected to a slider.

[0015] Preferably, the pressure relief pipe is connected to the cross pipe via a connecting pipe, and a sliding rod is slidably connected to the inner wall of the connecting pipe.

[0016] The utility model provides a compact environmentally friendly gas-filled ring main unit. It has the following beneficial effects:

[0017] (1) When the air pressure inside the sealed cabin of the compact environmentally friendly gas-inflated ring main unit is too high, the airbag expands. During this process, the airbag squeezes the pressure rod, causing the pressure rod to move downward, and squeezes the sliding rod. During this process, the sliding rod squeezes the sliding block, causing the sliding block to slide. When the sliding block slides a certain distance, the air outlet will coincide with the through groove, and the gas inside the sealed cabin will be discharged from the pressure relief pipe, thereby achieving the purpose of automatic pressure relief.

[0018] (2) When the air pressure in the sealed cabin of the compact environmentally friendly gas-inflated ring main unit decreases, the pressure of the airbag on the pressure rod disappears. At this time, the pressure rod returns to its original position under the elastic force of spring four, and at the same time, the squeezing of the sliding rod is released, so that the pressure on the sliding block disappears. At this time, the sliding block returns to its original position under the elastic action of spring three, and completes the sealing of the sealed cabin again. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0021] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0022] Figure 3This is a schematic diagram of the three-dimensional structure of the pressure relief device of the utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the inflatable tube of the utility model;

[0024] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the transverse pipe and the pressure relief pipe of the utility model;

[0025] Figure 6 It is a schematic diagram of the three-dimensional cross-sectional structure of the pressure relief pipe of the utility model.

[0026] Description of Figure Numbers:

[0027] 1. Cabinet; 2. Sealed cabin; 3. Pressure vessel; 4. Observation port; 5. Pressure relief device; 51. Inflatable pipe; 511. Air inlet; 512. Spring one; 513. Piston block; 514. Spring two; 515. Block; 52. Pressure relief pipe; 521. Through groove; 522. Spring three; 523. Sliding block; 524. Air outlet; 53. Horizontal pipe; 531. Air inlet pipe; 532. Air bag; 533. Pressure rod; 534. Spring four; 535. Sliding block; 536. Sliding rod; 54. Connecting pipe.

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-Figure 6The utility model proposes a compact environmentally friendly gas inflatable ring network cabinet, including a cabinet body 1, a sealed cabin 2 is fixedly connected to the inner wall of the cabinet body 1, a pressure device 3 is arranged on the outer wall of the sealed cabin 2, an observation port 4 is opened in the sealed cabin 2, a pressure relief device 5 is arranged on the sealed cabin 2, and the pressure relief device 5 includes an inflation pipe 51, the inflation pipe 51 passes through the sealed cabin 2 and is fixedly connected to the sealed cabin 2, a pressure relief pipe 52, the pressure relief pipe 52 passes through the sealed cabin 2 and is fixedly connected to the sealed cabin 2, and a cross pipe 53, the cross pipe 53 passes through the sealed cabin The cabin 2 is fixedly connected to the sealed cabin 2, the inflation tube 51 is provided with an air inlet 511, the inflation tube 51 is slidably connected to a piston block 513, the outer wall of the piston block 513 is fixedly connected to a spring 1 512, the end of the spring 1 512 away from the piston block 513 is fixedly connected to the inner wall of the inflation tube 51, the inner wall of the inflation tube 51 is slidably connected to a clamping block 515, the outer wall of the clamping block 515 is fixedly connected to a spring 2 514, the end of the spring 2 514 away from the clamping block 515 is fixedly connected to the inner wall of the inflation tube 51;

[0031] When the nitrogen pipe is connected to the interface of the inflation pipe 51, under the action of the air pump, nitrogen enters the inner cavity of the inflation pipe 51 from the nitrogen pipe. At this time, the pressure in the inner cavity of the inflation pipe 51 increases. Under the influence of the air pressure, the piston block 513 moves to the bottom of the inflation pipe 51. When the piston block 513 moves to the bottom of the air inlet 511, the nitrogen will enter the sealed cabin 2 from the air inlet 511.

[0032] In the embodiment of the utility model, in order to automatically release pressure, specifically, the pressure relief pipe 52 is provided with a through groove 521, the inner wall of the pressure relief pipe 52 is slidably connected with a sliding block 523, the sliding block 523 is provided with an air outlet 524, the outer wall of the sliding block 523 is fixedly connected with a spring 3 522, and one end of the spring 3 522 away from the sliding block 523 is fixedly connected to the inner wall of the pressure relief pipe 52, the cross pipe 53 is penetrated by the air intake pipe 531 and is fixedly connected to the air intake pipe 531, and the air intake pipe 531 is provided with a vent hole 524. The bottom end of the air pipe 531 is sealed and connected with an air bag 532. A pressure rod 533 is provided below the air bag 532. The pressure rod 533 is slidably connected to the inner wall of the cross tube 53. One end of a spring 534 is fixedly connected to the outer wall of the pressure rod 533. The other end of the spring 534 is fixedly connected to the inner wall of the cross tube 53. A slider 535 is fixedly connected to the end of the pressure rod 533. The pressure relief pipe 52 is connected to the cross tube 53 through a connecting pipe 54. A sliding rod 536 is slidably connected to the inner wall of the connecting pipe 54.

[0033] When the air pressure inside the sealed cabin 2 is too high, the airbag 532 expands. During this process, the airbag 532 squeezes the pressure rod 533, causing the pressure rod 533 to move downward. At the same time, the spring four 534 undergoes elastic deformation. When the pressure rod 533 moves downward, the sliding block 523 squeezes the sliding rod 536, causing the sliding rod 536 to slide in the connecting tube 54, and squeezes the sliding block 523, causing the sliding block 523 to slide. At the same time, the spring three 522 undergoes elastic deformation. When the sliding block 523 slides a certain distance, At this time, the air outlet 524 will coincide with the through groove 521, and the gas inside the sealed cabin 2 will be discharged from the pressure relief pipe 52, thereby achieving the purpose of automatic pressure relief. When the air pressure in the sealed cabin 2 decreases, the pressure of the airbag 532 on the pressure rod 533 disappears. At this time, the pressure rod 533 will return to its original position under the elastic force of the spring four 534, and at the same time, the squeezing of the sliding rod 536 will be released, so that the pressure on the sliding block 523 disappears. At this time, the sliding block 523 will return to its original position under the elastic action of the spring three 522, and the sealing of the sealed cabin 2 will be completed again.

[0034] In the present invention, when in use, the inflation tube 51 is first connected to the nitrogen tube, and then the air pump is started. Then, the nitrogen enters the inner cavity of the inflation tube 51 from the nitrogen tube. At this time, the pressure in the inner cavity of the inflation tube 51 increases. Under the influence of the air pressure, the piston block 513 moves to the bottom of the inflation tube 51. When the piston block 513 moves to the bottom of the air inlet 511, the nitrogen will enter the sealed cabin 2 from the air inlet 511. When the air pressure inside the sealed cabin 2 is too high, the airbag 532 will expand. In this process, the airbag 532 will squeeze the pressure rod 533. The pressure rod 533 moves downward, and the spring four 534 is elastically deformed. When the pressure rod 533 moves downward, the sliding block 523 returns to the sliding rod 536 for squeezing, so that the sliding rod 536 slides in the connecting tube 54, and at the same time, the sliding block 523 is squeezed, so that the sliding block 523 slides, and the spring three 522 is elastically deformed. When the sliding block 523 slides a certain distance, the air outlet 524 will coincide with the through groove 521. At this time, the gas inside the sealed cabin 2 is discharged from the pressure relief pipe 52, thereby achieving the purpose of automatic pressure relief.

[0035] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A compact environmentally friendly gas-filled ring main unit, comprising a cabinet body (1), characterized in that: The inner wall of the cabinet (1) is fixedly connected to a sealed cabin (2), the outer wall of the sealed cabin (2) is provided with a pressure device (3), the sealed cabin (2) is provided with an observation port (4), and the sealed cabin (2) is provided with a pressure relief device (5), and the pressure relief device (5) comprises: An inflation tube (51), wherein the inflation tube (51) passes through the sealed cabin (2) and is fixedly connected to the sealed cabin (2); A pressure relief pipe (52), wherein the pressure relief pipe (52) passes through the sealed cabin (2) and is fixedly connected to the sealed cabin (2); and a transverse tube (53), wherein the transverse tube (53) penetrates the sealed cabin (2) and is fixedly connected to the sealed cabin (2).

2. A compact environmentally friendly gas-filled ring main unit according to claim 1, characterized in that: The inflation tube (51) is provided with an air inlet (511), the inflation tube (51) is slidably connected to a piston block (513), the outer wall of the piston block (513) is fixedly connected to a spring 1 (512), and one end of the spring 1 (512) away from the piston block (513) is fixedly connected to the inner wall of the inflation tube (51).

3. A compact environmentally friendly gas-filled ring main unit according to claim 1, characterized in that: The inner wall of the inflation tube (51) is slidably connected to a clamping block (515), the outer wall of the clamping block (515) is fixedly connected to a spring (514), and one end of the spring (514) away from the clamping block (515) is fixedly connected to the inner wall of the inflation tube (51).

4. A compact environmentally friendly gas-filled ring main unit according to claim 1, characterized in that: The pressure relief pipe (52) is provided with a through groove (521), the inner wall of the pressure relief pipe (52) is slidably connected with a sliding block (523), and the sliding block (523) is provided with an air outlet hole (524).

5. A compact environmentally friendly gas-filled ring main unit according to claim 4, characterized in that: The outer wall of the sliding block (523) is fixedly connected to a spring three (522), and one end of the spring three (522) away from the sliding block (523) is fixedly connected to the inner wall of the pressure relief pipe (52).

6. A compact environmentally friendly gas-filled ring main unit according to claim 1, characterized in that: The transverse pipe (53) is penetrated by the air intake pipe (531) and is fixedly connected to the air intake pipe (531), and the bottom end of the air intake pipe (531) is sealed and connected to an air bag (532).

7. A compact environmentally friendly gas-filled ring main unit according to claim 6, characterized in that: A pressure rod (533) is provided below the airbag (532), and the pressure rod (533) is slidably connected to the inner wall of the transverse tube (53), and one end of a spring four (534) is fixedly connected to the outer wall of the pressure rod (533), and the other end of the spring four (534) is fixedly connected to the inner wall of the transverse tube (53), and a slider (535) is fixedly connected to the end of the pressure rod (533).

8. The compact environmentally friendly gas-filled ring main unit according to claim 1, characterized in that: The pressure relief pipe (52) is connected to the transverse pipe (53) via a connecting pipe (54), and a sliding rod (536) is slidably connected to the inner wall of the connecting pipe (54).

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