Explosion-proof electrical pressure relief system

Abstract

The utility model discloses an explosion-proof electrical pressure relief system, which particularly relates to the technical field of electrical equipment and comprises a shell, a pressure relief opening is arranged on the shell, an adapter tube is arranged on the shell, penetrates through the pressure relief opening and extends into the shell, a valve is arranged on the adapter tube, one end of the adapter tube is detachably connected with an exhaust pipe, and the other end of the adapter tube is detachably connected with a valve. An elastic telescopic assembly is arranged in the exhaust pipe, a sealing gasket is arranged on the elastic telescopic assembly, the sealing gasket is used for blocking the adapter pipe, and an exhaust structure is arranged on the elastic telescopic assembly; a pressure relief test unit is arranged on the adapter tube, pressure test structures are arranged on the adapter tube and the exhaust tube, and the pressure test structures are used for sensing pressure data of the elastic telescopic assembly; the adapter pipe is composed of a straight pipe and a pipe head. According to the utility model, the problem that the reliability of explosion-proof electrical pressure relief is reduced due to inconvenience in operation and maintenance of a pressure relief assembly structure in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical equipment technical field, concretely relates to an explosion -proof electrical pressure relief system. BACKGROUND

[0002] At present, some electrical equipment devices with high environmental requirements such as inverter, converter or power supply device need to be installed in the casing to prevent dust and moisture. But the inside of such electrical equipment generally contains capacitors, switches, relays and other devices. Such machines have the risk of explosion when a short circuit fault occurs in the equipment. Therefore, it is necessary to install a pressure relief system on the shell of the electrical equipment to meet the explosion-proof requirement.

[0003] For example, the utility model discloses a ring main unit with pressure relief device, including ring main unit body and pressure relief device, ring main unit body has pressure relief hole, and the pressure relief device includes a support, a spring, a connecting rod and a sealing plate. When the electrical equipment inside the ring main unit body fails, high-pressure gas is generated inside the ring main unit body, and the sealing plate will be subjected to pressure. When the pressure on the sealing plate is greater than the spring force, the sealing plate will be pushed away from the pressure relief hole by the high-pressure gas. At this time, the spring is compressed, and the high-pressure gas inside the ring main unit body is discharged from the pressure relief hole, realizing automatic pressure relief. Through the above-mentioned mode, pressure relief can be carried out when an electric arc fault occurs inside the ring main unit body, protecting the personal safety of the operator, and saving cost.

[0004] In the above-mentioned patent, although the mechanical pressure relief assembly meets the pressure relief and explosion-proof requirement of the electrical equipment, the pressure relief assembly structure is a vulnerable part. If the pressure relief assembly cannot be conveniently and quickly self-checked, the reliability of the pressure relief protection will be reduced. The current technical means has the problem of inconvenient operation for the operation and maintenance of the pressure relief assembly. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides an explosion -proof electrical pressure relief system to solve the problem of reduced reliability of explosion -proof electrical pressure relief caused by inconvenient operation and maintenance of the pressure relief assembly structure in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] An explosion -proof electrical pressure relief system, including the casing, be provided with pressure relief mouth on the casing, be provided with the adapter pipe on the casing, the adapter pipe passes through pressure relief mouth and extends to the casing, be provided with the valve on the adapter pipe, the one end of the adapter pipe is detachably connected with the exhaust pipe, be provided with the elastic telescopic component in the exhaust pipe, be provided with the sealing gasket on the elastic telescopic component, the sealing gasket is used to block up the adapter pipe, be provided with the exhaust structure on the elastic telescopic component;

[0008] The adapter pipe is provided with a pressure relief test unit, and the adapter pipe and the exhaust pipe are provided with pressure test structures for sensing pressure data of the elastic telescopic assembly.

[0009] Further, the adapter pipe is composed of a straight pipe and a pipe head, the pipe head is fixedly connected to one end of the straight pipe, the diameter of the pipe head is larger than that of the straight pipe, a sealing ring is arranged on the outer surface of the straight pipe, and the sealing ring is arranged in the pressure relief port in a conical structure.

[0010] Further, a fixing ring is fixedly connected to the outer surface of the straight pipe, the fixing ring is bolted to the shell, and the exhaust pipe is screwed to the pipe head.

[0011] Further, the elastic telescopic assembly comprises a fixing disc, a spring and a sliding core, the fixing disc is fixedly connected in the exhaust pipe, the spring is fixedly connected to the bottom of the fixing disc, and the sliding core is slidingly connected in the exhaust pipe and located at one end of the spring.

[0012] Further, a sealing gasket is fixedly connected to the bottom of the sliding core, the diameter of the sealing gasket is larger than the inner diameter of the straight pipe, and the sealing gasket is used for plugging one end of the straight pipe.

[0013] Further, the exhaust structure comprises an exhaust port and an exhaust groove, the exhaust port is arranged on the fixing disc, and the exhaust groove is arranged on the sliding core.

[0014] Further, the pressure relief test unit comprises a test air pipe, the test air pipe is fixedly connected to the straight pipe, and an air inlet end of the test air pipe is provided with an air pump.

[0015] Further, a one-way air valve is arranged on the test air pipe.

[0016] Further, the pressure test structure comprises a pressure sensor one, a top plate and a pressure sensor two, the pressure sensor one is fixedly connected to the bottom of the pipe head, a detection end of the pressure sensor one extends into the pipe head and contacts the sliding core, the top plate is bolted to the top of the exhaust pipe, the pressure sensor two is fixedly connected to the top of the top plate, a pressure relief hole corresponding to the axis of the exhaust port is arranged on the top plate, and a detection end of the pressure sensor two sequentially passes through the top plate and the fixing disc, and the detection end of the pressure sensor two is used for contacting the sliding core when the spring is compressed.

[0017] The utility model has the advantages of the following:

[0018] 1. The explosion-proof electrical pressure relief system, by setting the pressure relief test unit and pressure test structure, through the valve to control the adapter pipe and the exhaust pipe and the shell disconnected, the pressure relief test unit to the exhaust pipe in the purpose of pressurized air, with the pressure test structure on the action position of the elastic expansion assembly position sensing, so as to facilitate real-time monitoring of the elastic expansion assembly with the sealing pad to the straight pipe to block the pressure relief operation state, to the elastic expansion assembly simulation pressure relief state, so as to facilitate the test of the effectiveness of the elastic expansion assembly work.

[0019] 2. The explosion-proof electrical pressure relief system, because the pressure relief test unit and the pressure test unit are not directly connected with the elastic expansion assembly, and because the exhaust pipe and the adapter pipe are detachably connected, so when the internal structure of the exhaust pipe is damaged, it can be easily replaced. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained from the provided drawings without creative labor.

[0021] The structure, proportion, size, etc. shown in the specification are only used to cooperate with the content disclosed in the specification for understanding and reading by those skilled in the art, and are not used to limit the implementation conditions of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose of the present application, should still fall within the scope of the technical content disclosed by the present application.

[0022] Figure 1 The structure diagram of the explosion-proof electrical pressure relief system provided by the present application is shown in the figure.

[0023] Figure 2 The sectional view of the explosion-proof electrical pressure relief system provided by the present application is shown in the figure. Figure 1

[0024] Figure 3 The structure diagram of the shell and the sealing ring provided by the present application is shown in the figure.

[0025] Figure 4 The structure diagram of the adapter pipe and the pressure relief test unit of the present application is shown in the figure.

[0026] Figure 5 The exploded view of the exhaust pipe and the elastic expansion assembly of the present application is shown in the figure.

[0027] ​In the figure: 1, shell; 2, adapter pipe; 3, valve; 4, exhaust pipe; 5, elastic telescopic assembly; 51, fixed disc; 52, spring; 53, sliding core; 6, sealing gasket; 7, exhaust port; 71, exhaust groove; 8, pressure relief test unit; 81, test air pipe; 82, air pump; 9, pressure sensor one; 10, top plate; 11, pressure sensor two; 12, fixed ring; 13, sealing ring; 14, one-way air valve. DETAILED DESCRIPTION

[0028] The embodiments of the present application will be described in detail by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. Obviously, the described embodiments are part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0029] In conjunction with Figures 1-5 The present application provides a kind of explosion-proof electrical pressure relief system, including shell 1, shell 1 is provided with pressure relief port, shell is the explosion-proof shell for electrical equipment, shell is not completely shown in the figure.

[0030] Shell 1 is provided with adapter pipe 2, adapter pipe 2 passes through pressure relief port and extends into shell 1, adapter pipe 2 is provided with valve 3, one end of adapter pipe 2 is detachably connected with exhaust pipe 4.

[0031] Adapter pipe 2 can be connected with shell 1, because adapter pipe 2 is coaxially arranged with pressure relief port, so that the position of adapter pipe 2 can be used as the exhaust pipe for shell 1, valve 3 can play the role of opening and closing adapter pipe 2, valve 3 can be used in the application Electric valve, it can be executed control with controller, exhaust pipe 4 can be connected with adapter pipe 2 for pressure relief and exhaust.

[0032] Adapter pipe 2 is composed of straight pipe and pipe head, pipe head is fixedly connected at one end of straight pipe, the diameter of pipe head is greater than the diameter of straight pipe, the outer surface of straight pipe is sleeved with sealing ring 13, sealing ring 13 is arranged in the form of taper structure, and sealing ring 13 is arranged in the pressure relief port.

[0033] Sealing ring 13 can be used to improve the sealing property of adapter pipe 2 passing through pressure relief port.

[0034] The outer surface of straight pipe is fixedly connected with fixed ring 12, fixed ring 12 is bolted on shell 1, and exhaust pipe 4 is screwed on pipe head.

[0035] Fixed ring 12 can be used to fix the pressure relief position of adapter pipe 2, and exhaust pipe 4 screwed on adapter pipe 2 can meet the demand of quick disassembly and assembly.

[0036] The elastic telescopic assembly 5 is arranged in the exhaust pipe 4, and comprises a fixed disc 51, a spring 52 and a sliding core 53.

[0037] When the pressure in the shell 1 is greater than the elastic force of the spring 52, the sliding core 53 can slide upwards in the exhaust pipe 4, and the spring 52 is compressed.

[0038] The elastic telescopic assembly 5 is arranged in the exhaust pipe 4, and comprises a fixed disc 51, a spring 52 and a sliding core 53.

[0039] When the sliding core 53 slides upwards in the exhaust pipe 4, the sealing gasket 6 can be separated from one end of the straight pipe, so that the pressure in the shell 1 can be released into the exhaust pipe 4 through the straight pipe. Similarly, when the sealing gasket 6 abuts against the straight pipe, the shell 1 is in a pressure relief state.

[0040] The elastic telescopic assembly 5 is arranged in the exhaust pipe 4, and comprises a fixed disc 51, a spring 52 and a sliding core 53.

[0041] When the sealing gasket 6 is separated from one end of the straight pipe, the pressure in the shell 1 can be sequentially released through the exhaust groove 71 and the exhaust port 7.

[0042] The adapter pipe 2 is provided with a pressure relief test unit 8, and the pressure relief test unit 8 comprises a test air pipe 81 fixedly connected to the straight pipe, and the test air pipe 81 is provided with an air pump 82 at an air inlet end.

[0043] When the structure fittings in the exhaust pipe 4 are tested at a fixed time, the valve 3 is closed and the air pump 82 is started, so that the air pump 82 can pressurize air into the adapter pipe 2 through the test air pipe 81, and the air pressure can drive the elastic telescopic assembly 5 to perform telescopic test through the sealing gasket 6.

[0044] The test air pipe 81 is provided with a one-way air valve 14.

[0045] The one-way air valve 14 can make the test air pipe 81 meet the one-way property of gas transmission, so that the test air pipe 81 can act on the adapter pipe 2 more safely.

[0046] The adapter pipe 2 and the exhaust pipe 4 are provided with a pressure test structure for sensing pressure data of the elastic telescopic assembly, the pressure test structure comprises a pressure sensor one 9, a top plate 10 and a pressure sensor two 11, the pressure sensor one 9 is fixedly connected at the bottom of the pipe head, and the detection end of the pressure sensor one 9 extends into the pipe head and contacts the sliding core 53, the top plate 10 is bolted at the top of the exhaust pipe 4, the pressure sensor two 11 is fixedly connected at the top of the top plate 10, the top plate 10 is provided with a pressure relief hole corresponding to the axis of the exhaust port 7, and the detection end of the pressure sensor two 11 passes through the top plate 10 and the fixed disc 51 in sequence, and when the spring 52 is compressed, the detection end of the pressure sensor two 11 is used to contact the sliding core 53.

[0047] The pressure relief hole can cooperate with the exhaust port 7 to perform pressure relief and exhaust, the pressure sensor one 9 and the pressure sensor two 11 in the application are both pressure resistance type pressure sensors with the model of MPX2010, when the pressure test structure is used, the bottom of the sliding core 53 can press on the pressure sensor one 9 when the sealing gasket 6 is blocked at one end of the straight pipe, and the pressure data obtained by the pressure sensor one 9 represents that the sealing gasket 6 is in a blocking state, when the pressure relief test unit 8 is operated, the sliding core 53 moves in the exhaust pipe 4 to the position close to the fixed disc 51, and when the top of the sliding core 53 contacts the detection end of the pressure sensor two 11, the pressure sensor two 11 can sense the pressure, so that it is indicated that the pressure relief can normally operate, and therefore the above mode is used to test the function of pressure relief protection, so that the reliability of the pressure relief protection can be improved.

[0048] It is worth mentioning that, since the elastic telescopic assembly 5 and the sealing gasket 6 are arranged in the exhaust pipe 4, and since the exhaust pipe 4 is screw-connected to the adapter pipe 2 and can be conveniently disassembled, by removing the top plate 10 on the exhaust pipe 4, the exhaust pipe 4 and the internal structure thereof can be conveniently replaced.

[0049] Further, in order to realize the effect that the pressure relief system on the shell 1 realizes timing and wireless monitoring, the air pump 82, the valve 3, the pressure sensor one 9 and the pressure sensor two 11 can be electrically connected with the controller through existing wiring technology, the controller is used to control and process the pressure relief test work in a timing mode, and the wireless monitoring technology can be wirelessly connected with an external terminal such as a computer terminal through an existing wireless communication module, the control mode of the utility model is automatically controlled through the controller, the control circuit of the controller can be realized through simple programming by a person skilled in the art, and the power supply also belongs to the common knowledge in the field.

[0050] Although the utility model has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model all belong to the range of protection required by the utility model.

Claims

1. An explosion-proof electrical pressure relief system comprising a housing (1) provided with a pressure relief opening, characterized in that, The shell (1) is provided with an adapter pipe (2), the adapter pipe (2) passes through the pressure relief port and extends into the shell (1), the adapter pipe (2) is provided with a valve (3), one end of the adapter pipe (2) is detachably connected with an exhaust pipe (4), the exhaust pipe (4) is provided with an elastic expansion assembly (5), the elastic expansion assembly (5) is provided with a sealing gasket (6), the sealing gasket (6) is used for plugging the adapter pipe (2), and the elastic expansion assembly (5) is provided with an exhaust structure. The adapter pipe (2) is provided with a pressure relief test unit (8), the adapter pipe (2) and the exhaust pipe (4) are provided with a pressure test structure, and the pressure test structure is used for sensing pressure data of the elastic expansion assembly (5).

2. The explosion-proof electrical pressure relief system of claim 1, wherein, The adapter pipe (2) is composed of a straight pipe and a pipe head, the pipe head is fixedly connected to one end of the straight pipe, the diameter of the pipe head is greater than that of the straight pipe, the outer surface of the straight pipe is sleeved with a sealing ring (13), the sealing ring (13) is provided in a conical structure, and the sealing ring (13) is arranged in the pressure relief port.

3. The explosion-proof electrical pressure relief system of claim 2, wherein, The outer surface of the straight pipe is fixedly connected with a fixing ring (12), the fixing ring (12) is bolted to the shell (1), and the exhaust pipe (4) is threadedly connected to the pipe head.

4. The explosion-proof electrical pressure relief system of claim 2, wherein, The elastic expansion assembly (5) comprises a fixed disc (51), a spring (52) and a sliding core (53), the fixed disc (51) is fixedly connected in the exhaust pipe (4), the spring (52) is fixedly connected to the bottom of the fixed disc (51), and the sliding core (53) is slidingly connected in the exhaust pipe (4) and located at one end of the spring (52).

5. The explosion-proof electrical pressure relief system of claim 4, wherein, The sealing gasket (6) is fixedly connected to the bottom of the sliding core (53), the diameter of the sealing gasket (6) is greater than the inner diameter of the straight pipe, and the sealing gasket (6) is used for plugging one end of the straight pipe.

6. The explosion-proof electrical pressure relief system of claim 4, wherein, The exhaust structure comprises an exhaust port (7) and an exhaust groove (71), the exhaust port (7) is formed in the fixed disc (51), and the exhaust groove (71) is formed in the sliding core (53).

7. The explosion-proof electrical pressure relief system of claim 2, wherein, The pressure relief test unit (8) comprises a test air pipe (81), the test air pipe (81) is fixedly connected to the straight pipe, and the air inlet end of the test air pipe (81) is provided with an air pump (82).

8. The explosion-proof electrical pressure relief system of claim 7, wherein, The test air pipe (81) is provided with a one-way air valve (14).

9. The explosion-proof electrical pressure relief system of claim 6, wherein, The pressure test structure comprises a pressure sensor one (9), a top plate (10) and a pressure sensor two (11), the pressure sensor one (9) is fixedly connected to the bottom of the pipe head, the detection end of the pressure sensor one (9) extends into the pipe head and is in contact with the sliding core (53), the top plate (10) is bolted to the top of the exhaust pipe (4), the pressure sensor two (11) is fixedly connected to the top of the top plate (10), and the top plate (10) is provided with a pressure relief hole corresponding to the axis of the exhaust port (7). The detection end of the pressure sensor two (11) passes through the top plate (10) and the fixed disc (51) in sequence, and is used for contacting the sliding core (53) when the spring (52) is compressed.

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