CN113163645A

CN113163645A - Electromechanical cabinet protector

Info

Publication number: CN113163645A
Application number: CN202110338223.9A
Authority: CN
Inventors: 陈婷婷
Original assignee: Hangzhou Xiaoli Industrial Design Co ltd
Current assignee: Hangzhou Xiaoli Industrial Design Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-07-23

Abstract

The invention discloses an electromechanical cabinet protection device, which belongs to the technical field of motor cabinets, can realize positive pressure protection on a motor cabinet, can well prevent external corrosive gas from entering the motor cabinet, prolongs the service life of electronic equipment in the motor cabinet, can prevent the external corrosive gas from entering the motor cabinet even under the condition that the motor cabinet is not tightly sealed when the air pressure in the motor cabinet is higher than the external air pressure, can open a corresponding door plate or door frame when observing or overhauling the electronic equipment in the motor cabinet through the arrangement of the door frame and the door plate, avoids the condition that the electronic equipment in the motor cabinet is exposed when overhauling or observing the electronic equipment, indirectly reduces the work of discharging the corrosive gas in the motor cabinet outwards, and can control the opening, closing and opening of an electric telescopic rod according to whether heat dissipation is needed in the motor cabinet or not through the arrangement of a sealing ring, And (7) stopping.

Description

Electromechanical cabinet protector

Technical Field

The invention relates to the technical field of motor cabinets, in particular to a protection device for a motor cabinet.

Background

The equipment cabinets are generally made of cold-rolled steel plates or alloys and used for storing computers and related control equipment, can provide protection for the storage equipment, shields electromagnetic interference, arranges the equipment orderly and facilitates later maintenance of the equipment, and are generally divided into server equipment cabinets, network equipment cabinets, console equipment cabinets and the like

An existing electromechanical cabinet for a chemical plant production workshop is characterized in that a large amount of corrosive gas is contained in air of some production workshops of a chemical plant, so that the electromechanical cabinet is easy to damage after working in the environment for a long time.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a protection device for an electromechanical cabinet, which can provide positive pressure protection for the electromechanical cabinet, can well prevent external corrosive gas from entering the electromechanical cabinet, prolongs the service life of electronic equipment in the electromechanical cabinet, can prevent the external corrosive gas from entering the electromechanical cabinet even under the condition that the electromechanical cabinet is not tightly sealed when the air pressure in the electromechanical cabinet is higher than the external air pressure, can open a corresponding door plate or door frame when observing or overhauling the electronic equipment in the electromechanical cabinet through the arrangement of the door frame and the door plate, avoids the condition that the electronic equipment in the electromechanical cabinet needs to be exposed when overhauling or observing the electronic equipment, indirectly reduces the work of discharging the corrosive gas in the electromechanical cabinet, and can control the opening, closing and opening of an electric telescopic rod according to whether heat dissipation is needed in the electromechanical cabinet or not through the arrangement of a sealing ring, And (7) stopping.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A protection device for an electromechanical cabinet comprises a cabinet body, wherein electronic equipment is fixedly connected to the inner wall of the cabinet body, one end of the electronic equipment is fixedly connected with a control connecting wire, a door frame is hinged to the side wall of one end of the cabinet body, a sealing ring is installed between the cabinet body and the door frame, a gas transit box is fixedly connected to the top end of the cabinet body, an inflation box is fixedly connected to the top end of the gas transit box, a gas outlet groove is formed between the cabinet body and the gas transit box, a gas inlet pipe is fixedly connected to one side of the top end of the inflation box, a connecting pipe is fixedly connected between the inflation box and the gas transit box, an electric telescopic rod is fixedly connected to the side wall of the inflation box, which is far away from the gas inlet pipe, the output end of the electric telescopic rod penetrates through and is in sliding connection with the side wall of the inflation box, a first piston is fixedly connected to the output end of the electric telescopic rod, and the first piston is in sliding connection with the inner wall of the inflation box, the improved cabinet is characterized in that the side wall of the bottom end of the cabinet body is provided with an exhaust hole, the inner wall of the exhaust hole is fixedly connected with a pressure relief pipe, the inner wall of the pressure relief pipe is fixedly connected with two limiting rings which are symmetrically arranged, the inner wall of the pressure relief pipe is connected with a second piston in a sliding mode, and a compression spring is fixedly connected between the side wall of the second piston and the inner side of the pressure relief pipe.

Further, it has the door plant to articulate on the lateral wall of door frame one end, fixedly connected with control button on the outer wall of door plant, fixedly connected with observation board on the inner wall of door frame, logical groove has been seted up between the lateral wall of observation board both sides, the one end of connecting wire run through logical groove and with control button fixed connection, the observation board is transparent material, when only needing to observe the internal electronic equipment behavior of cabinet, through the setting of door plant, control button, observation board, only need open the door plant and see through the observation board observe the internal condition of cabinet can, reduced the internal number of times of external corrosive gas entering cabinet, improved electronic equipment's life.

Furthermore, fixedly connected with inner seal strip on the door frame is close to the lateral wall of door plant, fixedly connected with outer seal strip on the lateral wall of door plant is close to the door frame, can seal up equipment such as control button between door frame and the door plant through the setting of inner seal strip and outer seal strip, has avoided equipment such as control button to erode by corrosive gas.

Further, articulated department and door frame and the articulated department of door frame and door plant keep away from each other between the cabinet body and the door frame, equal fixedly connected with handle on the lateral wall that door frame and door plant kept away from each other, when only needing to open the door plant and pass through the internal electronic equipment of door frame observation cabinet, directly drag the handle on the door plant can, if with articulated department and door frame and the articulated setting of door frame and door plant between the cabinet body and the door frame in same one side, then can open together with the door frame when opening the door plant probably, the use of not being convenient for reality.

Further, fixedly connected with second check valve on the inner wall of intake pipe, fixedly connected with third check valve on the inner wall of connecting pipe, go out fixedly connected with third check valve on the inner wall in gas groove, it is concrete, when electric telescopic handle drives first piston shrink, the second check valve is opened, the third check valve is closed, outside air passes through the intake pipe suction plenum box this moment, when electric telescopic handle drives first piston and extrapolates outwards, the second check valve is closed, the third check valve is opened with going out the gas groove, through the setting to second check valve, third check valve, can make outside air extruded to the internal of cabinet by electric telescopic handle, make the air of the cabinet body outwards diffuse, avoided external corrosive gas to get into the cabinet internally.

Further, a plurality of disappointing holes have been seted up between the inside and outside wall of pressure release pipe, the second piston all is located between two spacing rings with disappointing hole, the second piston is located the one side in disappointing hole, under the circumstances that the internal electronic equipment of cabinet needs the cooling, need start electronic telescopic rod always to the internal pressure boost of cabinet, when the internal pressure of cabinet is too high, the internal gas of cabinet outwards pushes up the second piston, gaseous outwards leaking through disappointing hole when the second piston exceedes disappointing hole, can discharge the internal gas of cabinet through disappointing hole, the internal gas of cabinet can take out the internal heat of cabinet when leaking through disappointing hole simultaneously, gas is in the discharge, the atmospheric pressure of the cabinet body can drop to normal level, this moment through compression spring's power with the second piston inwards push up until will lose the hole and plug up.

Further, a plurality of intercommunicating pores have been seted up between the inside and outside wall of observation board, when only opening the door plant and see through the internal electronic equipment of door frame observation cabinet, also can be full of corrosive gas between door frame and the door plant, and it is internal with the corrosive gas discharge cabinet between door frame and the door plant through setting up of intercommunicating pore, the internal corrosive gas of cabinet can through the hole discharge of disappointing.

Furthermore, a sealing ring is arranged on one side of the pressure relief pipe, the inner diameter of the sealing ring is the same as the outer diameter of the pressure relief pipe, and the width of the sealing ring is larger than the width of the air leakage hole, when the heat productivity in the cabinet body is small and the air in the cabinet body does not need to be circulated outwards to take away heat, the sealing ring is sleeved on the outer side of the air leakage hole to block the air leakage hole, at the moment, the electric telescopic rod does not need to be inflated into the cabinet body all the time, and only the air pressure in the cabinet body needs to be inflated to a relatively stable state, namely if some places with untight sealing exist in the cabinet body, the gas in the cabinet body can be leaked out through the places without extending sealing, and the external corrosive gas is also prevented from entering the cabinet body; it should be noted that, if door frame or door plant were opened the electronic equipment of the internal cabinet and were overhauld this moment, just need lift the sealing ring off from disappointing the hole, because door frame or door plant when being opened, can be full of corrosive gas between the cabinet body or the door frame door plant, take off the sealing ring this moment until the internal corrosive gas of cabinet is completely through disappointing the hole discharge again with the sealing ring sheathe in can.

Further, the pressure release pipe is transparent material, fixedly connected with scale on the outer wall of pressure release pipe, the scale is located the outside of the cabinet body, through the scale with to the setting of pressure release pipe, when the second piston removed the corresponding position to on the pressure release pipe, can indirectly observe the pressure value of the cabinet body and start or close the benefit of electric telescopic handle to the internal pressure of cabinet.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) the scheme can realize positive pressure protection for the motor cabinet, can well prevent external corrosive gas from entering the motor cabinet, prolongs the service life of electronic equipment in the motor cabinet, and when the air pressure in the motor cabinet is higher than the external air pressure, even under the condition of not tight sealing of the motor cabinet, the motor cabinet can prevent external corrosive gas from entering the motor cabinet, and through the arrangement of the door frame and the door plate, when the electronic equipment in the electric cabinet is observed or overhauled, the corresponding door plate or the corresponding door frame can be opened, the condition that the electronic equipment in the electric cabinet needs to be exposed outside in the process of overhauling or observing the electronic equipment is avoided, the work of discharging corrosive gas in the electric cabinet is indirectly reduced, the electric telescopic rod can be controlled to start and stop according to whether heat dissipation is needed in the electric cabinet or not through the arrangement of the sealing ring.

(2) Articulated on the lateral wall of door frame one end have the door plant, fixedly connected with control button on the outer wall of door plant, fixedly connected with observation board on the inner wall of door frame, logical groove has been seted up between the lateral wall of observation board both sides, the one end of connecting wire run through logical groove and with control button fixed connection, the observation board is transparent material, when only needing to observe the internal electronic equipment behavior of cabinet, through the door plant, control button, the setting of observation board, only need open the door plant and see through the observation board observe the internal condition of cabinet can, the internal number of times of external corrosive gas entering cabinet has been reduced, electronic equipment's life has been improved.

(3) The door frame is close to fixedly connected with inner seal strip on the lateral wall of door plant, and the door plant is close to fixedly connected with outer seal strip on the lateral wall of door frame, can seal up equipment such as control button between door frame and the door plant through the setting of inner seal strip and outer seal strip, has avoided equipment such as control button to be corroded the erosion of corrosive gas.

(4) Articulated department and door frame and the articulated department of door frame and door plant keep away from each other between the cabinet body and the door frame, equal fixedly connected with handle on the lateral wall that door frame and door plant kept away from each other, when only need open the door plant and pass through the internal electronic equipment of door frame observation cabinet, directly drag the handle on the door plant can, if with articulated department between the cabinet body and the door frame and the articulated setting of door frame and door plant in same one side, then can open together with the door frame very likely when opening the door plant, the use of the reality of not being convenient for.

(5) Fixedly connected with second check valve on the inner wall of intake pipe, fixedly connected with third check valve on the inner wall of connecting pipe, go out fixedly connected with third check valve on the inner wall in air groove, it is concrete, when electric telescopic handle drives first piston shrink, the second check valve is opened, the third check valve is closed, outside air passes through the intake pipe suction plenum box this moment, when electric telescopic handle drives first piston outwards, the second check valve is closed, third check valve opens with going out the air groove, through to the second check valve, the third check valve, the setting of third check valve, can make outside air by electric telescopic handle extrusion to the internal of cabinet, make the air of the cabinet body outwards diffuse, it is internal to have avoided external corrosive gas to get into the cabinet.

(6) Seted up a plurality of holes of disappointing between the inside and outside wall of pressure release pipe, the second piston all is located between two spacing rings with disappointing the hole, the second piston is located the one side in disappointing the hole, under the condition that the internal electronic equipment of cabinet needs the cooling, need start electronic telescopic rod always and to the internal pressure boost of cabinet, when the internal pressure of cabinet is too high, the internal gas of cabinet pushes up the second piston outwards, gaseous outwards leaking through disappointing the hole when the second piston exceedes disappointing the hole, can be with the internal gas of cabinet through disappointing the hole discharge, the internal gas of cabinet can take away the internal heat of cabinet when leaking through disappointing the hole simultaneously, gaseous in the exhaust, the atmospheric pressure of the cabinet body can drop to normal level, this moment plug up the hole of disappointing with the second piston inwards through compression spring's power.

(7) A plurality of intercommunicating pores have been seted up between the interior outer wall of observation panel, when only opening the door plant and see through the internal electronic equipment of door frame observation cabinet, also can be full of corrosive gas between door frame and the door plant, and it is internal with corrosive gas discharge cabinet between door frame and the door plant through setting up of intercommunicating pore, the internal corrosive gas of cabinet can through the discharge of disappointing hole.

(8) One side of the pressure relief pipe is provided with a sealing ring, the inner diameter of the sealing ring is the same as the outer diameter of the pressure relief pipe, and the width of the sealing ring is larger than the width of the air leakage hole, when the heat productivity in the cabinet body is small and the air in the cabinet body does not need to be circulated outwards to take away the heat, the sealing ring is sleeved on the outer side of the air leakage hole to block the air leakage hole, at the moment, the electric telescopic rod does not need to be inflated into the cabinet body all the time, only the air pressure in the cabinet body needs to be inflated to a relatively stable state, namely if some places with untight sealing exist in the cabinet body, the air in the cabinet body can be leaked out through the places without prolonged sealing, and the external corrosive gas is also prevented from entering the cabinet body; it should be noted that, if door frame or door plant were opened the electronic equipment of the internal cabinet and were overhauld this moment, just need lift the sealing ring off from disappointing the hole, because door frame or door plant when being opened, can be full of corrosive gas between the cabinet body or the door frame door plant, take off the sealing ring this moment until the internal corrosive gas of cabinet is completely through disappointing the hole discharge again with the sealing ring sheathe in can.

(9) The pressure release pipe is transparent material, fixedly connected with scale on the outer wall of pressure release pipe, and the scale is located the outside of the cabinet body, through scale and to the setting of pressure release pipe, when the second piston removed the corresponding position to on the pressure release pipe, can indirectly observe the pressure value of the cabinet body and start or close the benefit of electric telescopic handle to the internal of cabinet and press.

Drawings

Fig. 1 is a schematic top view of the cabinet of the present invention;

FIG. 2 is a schematic front view of the door frame and the door panel of the present invention;

FIG. 3 is a schematic side sectional view of the cabinet according to the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 3 according to the present invention;

FIG. 5 is an enlarged view of the structure of FIG. 3 at B according to the present invention;

FIG. 6 is a schematic side view of the pressure relief tube of the present invention.

The reference numbers in the figures illustrate:

1. a cabinet body; 2. a door frame; 3. a door panel; 4. an inner seal strip; 5. an outer seal strip; 6. a connecting wire; 7. a control button; 8. an air-filled tank; 9. a gas transit box; 10. an air inlet pipe; 11. a connecting pipe; 12. an air outlet groove; 13. an observation plate; 14. an electric telescopic rod; 15. a first piston; 16. a first check valve; 17. a second one-way valve; 18. a third check valve; 19. a pressure relief pipe; 20. a second piston; 21. a compression spring; 22. an air release hole; 23. a limiting ring; 24. calibration; 25. a seal ring; 26. and a communicating hole.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-6, an electromechanical cabinet protection device comprises a cabinet body 1, an electronic device fixedly connected to an inner wall of the cabinet body 1, a control connection wire 6 fixedly connected to one end of the electronic device, a door frame 2 hinged to a side wall of one end of the cabinet body 1, a sealing ring installed between the cabinet body 1 and the door frame 2, a gas transit box 9 fixedly connected to a top end of the cabinet body 1, an air charging box 8 fixedly connected to a top end of the gas transit box 9, an air outlet slot 12 formed between the cabinet body 1 and the gas transit box 9, an air inlet pipe 10 fixedly connected to one side of a top end of the air charging box 8, one end of the air inlet pipe 10 extendable to a place without corrosive gas to supply gas to the inside of the cabinet body 1, a connection pipe 11 fixedly connected between the air charging box 8 and the gas transit box 9, a second single valve 16 fixedly connected to an inner wall of the air inlet pipe 10, and a third one-way valve 17 fixedly connected to an inner wall of the connection pipe 11, the inner wall of the air outlet groove 12 is fixedly connected with a third one-way valve 18, specifically, when the electric telescopic rod 14 drives the first piston 15 to contract, the second single valve 16 is opened, the third one-way valve 17 is closed, at the moment, external air is pumped into the air charging box 8 through the air inlet pipe 10, when the electric telescopic rod 14 drives the first piston 15 to push outwards, the second single valve 16 is closed, the third one-way valve 17 and the air outlet groove 12 are opened, through the arrangement of the second single valve 16, the third one-way valve 17 and the third one-way valve 18, the external air can be extruded into the cabinet body 1 by the electric telescopic rod 14, the air in the cabinet body 1 is diffused outwards, the external corrosive gas is prevented from entering the cabinet body 1, the electric telescopic rod 14 is fixedly connected to the side wall of the air charging box 8 far away from the air inlet pipe 10, the output end of the electric telescopic rod 14 penetrates through the side wall of the air charging box 8 and is connected with the side wall in a sliding manner, the output end of the electric telescopic rod 14 is fixedly connected with the first piston 15, first piston 15 and plenum box 8's inner wall sliding connection has seted up the exhaust hole on the lateral wall of the cabinet body 1 bottom, and the inner wall fixedly connected with pressure release pipe 19 in exhaust hole, the spacing ring 23 that two symmetries set up of fixedly connected with on the inner wall of pressure release pipe 19, sliding connection has second piston 20 on the inner wall of pressure release pipe 19, fixedly connected with compression spring 21 between the lateral wall of second piston 20 and the inboard of pressure release pipe 19.

Referring to fig. 1-2, a door plate 3 is hinged on the side wall of one end of a door frame 2, a control button 7 is fixedly connected on the outer wall of the door plate 3, an observation plate 13 is fixedly connected on the inner wall of the door frame 2, a through groove is formed between the side walls of the two sides of the observation plate 13, one end of a connecting wire 6 penetrates through the through groove and is fixedly connected with the control button 7, the observation plate 13 is made of a transparent material, when the operation condition of electronic equipment in the cabinet body 1 is only to be observed, the door plate 3, the control button 7 and the observation plate 13 are arranged, the door plate 3 is only required to be opened and the condition in the cabinet body 1 is observed through the observation plate 13, the frequency of external corrosive gas entering the cabinet body 1 is reduced, the service life of the electronic equipment is prolonged, an inner sealing strip 4 is fixedly connected on the side wall of the door frame 2 close to the door plate 3, and an outer sealing strip 5 is fixedly connected on the side wall of the door plate 3 close to the door frame 2, can seal up equipment such as control button 7 between door frame 2 and the door plant 3 through the setting of interior sealing strip 4 and exterior sealing strip 5, the corruption of equipment such as control button 7 has been avoided, articulated department between the cabinet body 1 and the door frame 2 keeps away from each other with the articulated department of door frame 2 and door plant 3, equal fixedly connected with handle on the lateral wall that door frame 2 and door plant 3 kept away from each other, when only needing to open door plant 3 and observe the electronic equipment in the cabinet body 1 through door frame 2, directly drag the handle on the door plant 3 can, if with articulated department between the cabinet body 1 and the door frame 2 and the articulated setting of door frame 2 and door plant 3 in same one side, then can open together with door frame 2 probably when opening door plant 3, be not convenient for actual use.

Referring to fig. 2-5, a plurality of air release holes 22 are formed between the inner wall and the outer wall of the pressure release pipe 19, the second piston 20 and the air release holes 22 are located between two limiting rings 23, the second piston 20 is located at one side of the air release holes 22, when the electronic device in the cabinet 1 needs to be cooled, the electric telescopic rod 14 needs to be started all the time to pressurize the interior of the cabinet 1, when the pressure in the cabinet 1 is too high, the second piston 20 is pushed outwards by the air in the cabinet 1, when the second piston 20 exceeds the air release holes 22, the air is leaked outwards through the air release holes 22, the air in the cabinet 1 can be discharged through the air release holes 22, meanwhile, when the air in the cabinet 1 is leaked out through the air release holes 22, the air pressure of the cabinet 1 can be reduced to a normal level, at this time, the second piston 20 is pushed inwards by the force of the compression spring 21 until the air release holes 22 are blocked, a plurality of communication holes 26 are formed between the inner wall and the outer wall of the observation plate 13, when only the door panel 3 is opened to observe the electronic equipment in the cabinet body 1 through the door frame 2, corrosive gas can be filled between the door frame 2 and the door panel 3, the corrosive gas between the door frame 2 and the door panel 3 is discharged into the cabinet body 1 through the arrangement of the communication holes 26, the corrosive gas in the cabinet body 1 can be discharged through the air leakage holes 22, one side of the pressure leakage pipe 19 is provided with a sealing ring 25, the inner diameter of the sealing ring 25 is the same as the outer diameter of the pressure leakage pipe 19, the width of the sealing ring 25 is larger than the width of the air leakage holes 22, when the heat productivity in the cabinet body 1 is small and the air in the cabinet body 1 does not need to be circulated outwards to take away the heat, the sealing ring 25 is sleeved on the outer side of the air leakage holes 22 to block the air leakage holes 22, at this time, the electric telescopic rod 14 does not need to be always inflated into the cabinet body 1, only needs to inflate the air pressure in the cabinet body 1 to a relatively stable state, that is, if some places with untight sealing exist in the cabinet body 1, the gas in the cabinet body 1 will leak through the places without extending sealing, and the external corrosive gas is prevented from entering the cabinet body 1; it should be noted that, if door frame 2 or door plant 3 were opened the electronic equipment in the cabinet body 1 and were overhauld this moment, just need lift sealing ring 25 off from disappointing hole 22, because door frame 2 or door plant 3 are opened the time, can be full of corrosive gas between cabinet body 1 or the door frame 2 door plant 3, take off sealing ring 25 this moment until the corrosive gas in the cabinet body 1 is completely through disappointing hole 22 discharge again with sealing ring 25 on can.

Referring to fig. 6, the pressure relief pipe 19 is made of a transparent material, the scale 24 is fixedly connected to the outer wall of the pressure relief pipe 19, the scale 24 is located outside the cabinet 1, and through the scale 24 and the arrangement of the pressure relief pipe 19, when the second piston 20 moves to a corresponding position on the pressure relief pipe 19, the pressure value of the cabinet 1 can be indirectly observed, and the pressure compensation of the electric telescopic rod 14 to the inside of the cabinet 1 is started or closed.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. The utility model provides an electromechanical cabinet protector, includes the cabinet body (1), fixedly connected with electronic equipment on the inner wall of the cabinet body (1), electronic equipment's one end fixedly connected with control connection line (6), its characterized in that: the improved cabinet is characterized in that a door frame (2) is hinged to the side wall of one end of the cabinet body (1), a sealing ring is installed between the cabinet body (1) and the door frame (2), a gas transfer box (9) is fixedly connected to the top end of the cabinet body (1), an inflation box (8) is fixedly connected to the top end of the gas transfer box (9), a gas outlet groove (12) is formed between the cabinet body (1) and the gas transfer box (9), a gas inlet pipe (10) is fixedly connected to one side of the top end of the inflation box (8), a connecting pipe (11) is fixedly connected between the inflation box (8) and the gas transfer box (9), an electric telescopic rod (14) is fixedly connected to the side wall of the inflation box (8) far away from the gas inlet pipe (10), the output end of the electric telescopic rod (14) penetrates through the side wall of the inflation box (8) and is in sliding connection with the side wall of the inflation box, and a first piston (15) is fixedly connected to the output end of the electric telescopic rod (14), the utility model discloses a cabinet, including cabinet body (1), first piston (15), the inner wall sliding connection of plenum chamber (8), the exhaust hole has been seted up on the lateral wall of the cabinet body (1) bottom, the inner wall fixedly connected with pressure release pipe (19) in exhaust hole, spacing ring (23) that two symmetries of fixedly connected with set up on the inner wall of pressure release pipe (19), sliding connection has second piston (20) on the inner wall of pressure release pipe (19), fixedly connected with compression spring (21) between the lateral wall of second piston (20) and the inboard of pressure release pipe (19).

2. The electromechanical cabinet protective device according to claim 1, characterized in that: articulated on the lateral wall of door frame (2) one end have door plant (3), fixedly connected with control button (7) on the outer wall of door plant (3), fixedly connected with observation board (13) on the inner wall of door frame (2), logical groove has been seted up between the lateral wall of observation board (13) both sides, the one end of connecting wire (6) run through logical groove and with control button (7) fixed connection, it is transparent material to observe board (13).

3. The electromechanical cabinet protective device according to claim 1, characterized in that: the door frame (2) is close to fixedly connected with inner sealing strip (4) on the lateral wall of door plant (3), door plant (3) is close to fixedly connected with outer sealing strip (5) on the lateral wall of door frame (2).

4. The electromechanical cabinet protective device according to claim 1, characterized in that: hinge department and door frame (2) and the hinge department of door frame (2) and door plant (3) keep away from each other between the cabinet body (1) and door frame (2), equal fixedly connected with handle on the lateral wall that door frame (2) and door plant (3) kept away from each other.

5. The electromechanical cabinet protective device according to claim 1, characterized in that: fixedly connected with second check valve (16) on the inner wall of intake pipe (10), fixedly connected with third check valve (17) on the inner wall of connecting pipe (11), fixedly connected with third check valve (18) on the inner wall of gas outlet groove (12).

6. The electromechanical cabinet protective device according to claim 1, characterized in that: seted up a plurality of holes of disappointing (22) between the interior outer wall of pressure release pipe (19), second piston (20) all are located between two spacing rings (23) with disappointing hole (22), second piston (20) are located the one side of disappointing hole (22).

7. The electromechanical cabinet protective device according to claim 1, characterized in that: a plurality of communicating holes (26) are arranged between the inner wall and the outer wall of the observation plate (13).

8. The electromechanical cabinet protective device according to claim 1, characterized in that: one side of pressure release pipe (19) is provided with sealing ring (25), the internal diameter of sealing ring (25) is the same with the external diameter size of pressure release pipe (19) and the width of sealing ring (25) is greater than the width of disappointing hole (22).

9. The electromechanical cabinet protective device according to claim 7, characterized in that: the pressure relief pipe (19) is made of transparent materials, scales (24) are fixedly connected to the outer wall of the pressure relief pipe (19), and the scales (24) are located on the outer side of the cabinet body (1).