An inflatable cabinet assembly capable of rapidly reducing pressure

Abstract

The present invention is used in the technical field of inflatable cabinets, and specifically discloses an inflatable cabinet group capable of rapid depressurization, including a cabinet body, a cabinet door that can be rotated and opened is arranged on the front surface of the cabinet body, a component mounting plate is fixedly installed inside the cabinet body, electrical components are installed on the surface of the component mounting plate, and a double-layer air chamber structure is arranged on the outer surface of the cabinet body. In the inflatable cabinet group capable of rapid depressurization, the cabinet body is arranged as an inner air chamber structure, an outer shell is arranged on the outer surface of the cabinet body as an outer air chamber structure, and gas is communicated between the inner air chamber structure and the outer air chamber structure through a gas transmission pipe. When insulating gas is filled, gas is inflated through the gas pipe on the surface of the outer air chamber structure. When the inner air chamber structure needs to be depressurized, the gas flows from the inner air chamber structure to the outer air chamber structure, and the outer air chamber structure plays a buffering effect to prevent the gas from being directly discharged into the outside atmosphere.

Description

Technical Field

[0001] The invention relates to the technical field of inflatable cabinets, and in particular to an inflatable cabinet group capable of rapid pressure reduction. Background Art

[0002] A gas-filled cabinet group refers to a combination of electrical equipment that seals high-voltage electrical equipment in a cabinet filled with insulating gas. It is mainly used in medium-voltage and high-voltage power systems, such as power distribution and control at voltage levels such as 10kV and 35kV. The high insulation performance of insulating gas is used to ensure the safe operation of electrical equipment. Insulating gas can prevent short circuits and leakage between electrical equipment and provide a reliable insulation environment for the power system. Currently, the commonly used insulating gases are mainly dry air and environmentally friendly gases such as nitrogen.

[0003] In order to ensure the insulation performance of the charging cabinet, the gas in the cabinet has a certain pressure. When a fault occurs inside the charging cabinet group, such as a short circuit in an electrical component that generates a large amount of heat, causing the gas to expand, the pressure in the gas chamber will increase abnormally. In this case, if the pressure is not released in time, it may cause the cabinet to rupture and cause serious safety accidents. Therefore, it is necessary to set a corresponding pressure relief device for the charging cabinet. In the current pressure relief process of the charging cabinet, only the insulating gas in the cabinet is released to the outside world to achieve the purpose of pressure reduction. However, after the air pressure in the charging cabinet stabilizes, it is necessary to fill it with insulating gas again to return to the pressure before the pressure relief, and the operation is cumbersome. Summary of the invention

[0004] The purpose of the present invention is to provide a gas charging cabinet group that can quickly reduce pressure, so as to solve the problem in the above background technology that during the process of depressurizing the charging cabinet, after the insulating gas is released, it is necessary to refill the insulating gas to maintain the pressure before depressurization.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an inflatable cabinet group capable of rapid depressurization, comprising a cabinet body, a cabinet door that can be rotated and opened is arranged on the front surface of the cabinet body, a component mounting plate is fixedly installed inside the cabinet body, and electrical components are installed on the surface of the component mounting plate, characterized in that: a double-layer air chamber structure is arranged on the outer surface of the cabinet body, and the double-layer air chamber structure realizes the storage of insulating gas in the cabinet body by arranging another air storage chamber on the outer surface of the cabinet body, thereby realizing a rapid depressurization process, and the double-layer air chamber structure includes an outer shell body, the upper cross-section of the outer shell body is an n-shaped structure, and the outer shell body It is a hollow structure, the outer shell is fixedly mounted on the outer surface of the cabinet, and the outer shell is wrapped around the rear surface and both side surfaces of the cabinet, the interior of the cabinet forms an inner air chamber structure, the interior of the outer shell forms an outer air chamber structure, the side surface of the cabinet is penetrated by a gas pipe, the other end of the gas pipe penetrates the surface of the outer shell, the two ends of the gas pipe are connected, the two ends of the gas pipe penetrate the inner air chamber structure formed by the cabinet and the outer air chamber structure formed by the outer shell, the gas pipes are respectively arranged in parallel up and down on both side surfaces of the cabinet, the side surface of the outer shell is penetrated by a gas pipe, A valve is arranged inside the gas pipe to control opening and closing, and a one-way gas delivery structure is arranged inside the gas delivery pipe. The one-way gas delivery structure can realize one-way delivery of insulating gas between the inner gas chamber structure and the outer gas chamber structure, thereby realizing the pressure regulation process inside the cabinet. The one-way gas delivery structure includes a clamp ring, which is a circular ring structure. The outer surface of the clamp ring is fixedly mounted on the inner wall of the gas delivery pipe, and the inner surface of the clamp ring is clamped and connected with a clamp block. An electromagnet is arranged on the other side of the clamp ring, and the electromagnet is fixedly mounted on the inner wall of the gas delivery pipe through a bracket. The coil wire on the surface of the electromagnet passes through the inner wall of the gas delivery pipe. The magnetic poles of the electromagnet repel the card block, and a pneumatic drive structure is arranged between the upper and lower air pipes. The pneumatic drive structure realizes the automatic opening of the one-way air supply structure through the pressure difference between the inner air chamber structure and the outer air chamber structure. The pneumatic drive structure includes a box body, and the box body is embedded and fixed at the connection between the cabinet body and the outer shell. An elastic diaphragm is fixedly installed inside the box body, and the elastic diaphragm divides the interior of the box body into two left and right chambers. A support block is fixedly installed on the inner wall of the box body, and a sliding block is arranged on one side of the support block, and the surface of the sliding block is connected to the surface of the support block through a connecting rod.

[0006] Preferably, a secondary sealing structure is arranged inside the cabinet, and the secondary sealing structure seals the joints of the cabinet door by expanding a sealing airbag.

[0007] By adopting the above technical solution and utilizing the secondary sealing structure, the sealing performance between the cabinet body and the cabinet door can be increased.

[0008] Preferably, the secondary sealing structure includes a sealing airbag, which is installed inside the cabinet, and the surface of the sealing airbag is fixedly connected to the inner wall of the cabinet, and the sealing airbag is installed on one side of the cabinet door of the cabinet. A through tube is provided on the surface of the sealing airbag, and the other end of the through tube penetrates the surfaces of the cabinet and the outer shell and is connected with the external air chamber structure.

[0009] By adopting the above technical solution, the sealing performance between the cabinet body and the cabinet door can be increased by utilizing the expansion of the sealing airbag.

[0010] Preferably, a plurality of cylindrical protrusions are arranged in an annular manner on the side surface of the clamping ring, the cross-section of the clamping block is a convex structure, and the outer surface of the clamping block is slidably mounted on the inner wall of the gas pipe, the surface of the clamping block is a magnetic material, and a cylindrical air outlet is arranged in an annular manner on the surface of the clamping block, and one end of the air outlet on the surface of the clamping ring is engaged with the protrusion on the side surface of the clamping ring, and the two upper and lower parallel one-way gas supply structures are arranged in opposite directions, and the gas movement direction of the upper one-way gas supply structure is from the outer air chamber structure to the inner air chamber structure, and the gas movement direction of the lower one-way gas supply structure is from the inner air chamber structure to the outer air chamber structure.

[0011] By adopting the above technical solution, the one-way gas transmission process can be realized by utilizing the separation between the clamping block and the clamping ring of the gas transmission pipe.

[0012] Preferably, the box body is a hollow rectangular structure, and two connecting tubes are arranged through the upper surface of the box body. The connecting tubes on the upper surface of the box body respectively connect the two internal chambers with the inner air chamber structure and the outer air chamber structure. The connecting rod is a telescopic structure, and a return spring is arranged on the outer surface of the connecting rod, one end of the return spring is fixed to the surface of the sliding block, and the other end of the return spring is fixed to the surface of the supporting block. A No. 1 electrical contact is arranged on the surface of the supporting block, and a No. 2 electrical contact is arranged on one side of the No. 1 electrical contact, and the No. 2 electrical contact is fixedly connected to the surface of the sliding block. The electrical contact is connected to the power supply, the No. 2 electrical contact is connected to the electromagnet in the gas supply pipe, the No. 1 electrical contact and the No. 2 electrical contact constitute an active switch structure, the active switch structure is respectively arranged in the left and right chambers of the box body, and the active switch structure is opposite to the elastic diaphragm, the two active switch structures are respectively connected to the upper one-way gas supply structure and the lower one-way gas supply structure, the active switch structure in the box body chamber that is connected to the inner air chamber structure controls the upper one-way gas supply structure, and the active switch structure in the box body chamber that is connected to the outer air chamber structure controls the lower one-way gas supply structure.

[0013] By adopting the above technical solution, the movable switch structure is opened by utilizing the movement of the elastic diaphragm in the box body driven by air pressure, thereby realizing the automatic opening of the electromagnet in the gas transmission pipe.

[0014] Preferably, an active pressure relief structure is provided on the upper surface of the cabinet, and the active pressure relief structure is manually controlled to achieve a rapid pressure reduction process in the cabinet.

[0015] By adopting the above technical solution, the pressure inside the cabinet can be actively reduced by utilizing the active pressure relief structure.

[0016] Preferably, the active pressure relief structure includes a connecting plate, which is a circular structure and is arranged through the upper surface of the cabinet. The surface of the connecting plate is provided with fan-shaped ventilation holes in a ring shape. A driving motor is fixedly installed on the upper surface of the connecting plate. The output end of the driving motor passes through the surface of the connecting plate and is fixedly connected with a rotating plate. The upper surface of the rotating plate is rotatably connected to the lower surface of the connecting plate. The surface of the rotating plate is provided with fan-shaped ventilation holes in a ring shape, and the fan-shaped ventilation holes on the surface of the rotating plate are of the same size as the fan-shaped ventilation holes on the surface of the connecting plate.

[0017] By adopting the above technical solution, the driving motor is used to drive the rotating plate to rotate, so as to actively reduce the pressure inside the cabinet.

[0018] Compared with the prior art, the invention has the following beneficial effects: the inflatable cabinet group capable of rapid depressurization:

[0019] 1. In the present invention, the cabinet is configured as an inner air chamber structure, and an outer shell is configured on the outer surface of the cabinet as an outer air chamber structure. The inner air chamber structure and the outer air chamber structure are connected by a gas transmission pipe. When the insulating gas is filled, the gas is filled through the gas pipe on the surface of the outer air chamber structure. When the inner air chamber structure needs to be depressurized, the gas flows from the inner air chamber structure to the outer air chamber structure. The outer air chamber structure plays a buffering role to prevent the gas from being directly discharged into the outside atmosphere. At the same time, the outer air chamber structure plays a temporary storage role for the insulating gas during the exhaust and depressurization process. The stored insulating gas can flow into the inner air chamber structure again for reuse without frequent inflation.

[0020] Furthermore, the inner wall of the cabinet is fixedly connected to the sealing airbag, and a through-tube is arranged on the surface of the sealing airbag to be connected with the outer air chamber structure. During the process of filling the cabinet with insulating gas through the outer air chamber structure, the gas will simultaneously enter the sealing airbag through the through-tube, so that the sealing airbag expands and bulges, and seals the joint between the inner wall of the cabinet and the cabinet door, thereby improving the sealing performance of the cabinet.

[0021] 2. In the present invention, a clamping ring and a clamping block are arranged in the gas transmission pipe. The clamping block is made of magnetic material. An electromagnet is arranged on the other side of the clamping ring. After the electromagnet is started and energized, it repels the clamping block, driving the clamping block to slide and separate from the clamping ring, so that the insulating gas can flow unidirectionally in the gas transmission pipe. The insulating gas flows between the inner air chamber structure and the outer air chamber structure, and the pressure in the inner air chamber structure of the cabinet can be automatically adjusted to achieve a rapid pressure reduction process in the cabinet;

[0022] Furthermore, the electromagnet at the gas transmission pipe is automatically controlled by the air pressure driving structure in the box body. An elastic diaphragm is arranged in the box body. The chambers on both sides of the elastic diaphragm are respectively connected with the inner air chamber structure and the outer air chamber structure of the device. When the pressure in the cabinet changes, the gas in the inner air chamber structure and the outer air chamber structure generates a pressure difference. The pressure difference drives the elastic diaphragm to move, and the movable switch structures on both sides are controlled to start, and the electromagnet at the corresponding gas transmission pipe is controlled to open, so that the insulating gas flows between the inner air chamber structure and the outer air chamber structure, and the pressure of the cabinet is automatically adjusted;

[0023] Furthermore, a connecting plate is provided on the upper surface of the cabinet, a rotating plate is rotatably installed on the lower surface of the connecting plate, and fan-shaped ventilation holes are respectively provided on the surfaces of the connecting plate and the rotating plate. The rotation of the rotating plate is controlled by a driving motor to achieve alignment of the fan-shaped ventilation holes on the surfaces of the connecting plate and the rotating plate, thereby actively performing a pressure relief process on the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the front cross-section structure of the cabinet of the present invention;

[0026] Figure 3 It is a schematic diagram of the front cross-section structure of the outer shell of the present invention;

[0027] Figure 4 It is a schematic diagram of the front cross-section structure of the box body of the present invention;

[0028] Figure 5 This is a schematic diagram of the front cross-section structure of the gas transmission pipe of the present invention;

[0029] Figure 6 It is a schematic diagram of an enlarged front cross-section of the box body of the present invention;

[0030] Figure 7 It is a schematic diagram of the enlarged structure of the gas transmission pipe of the present invention in a front cross-section;

[0031] Figure 8 It is a schematic diagram of the structure of the connecting plate and the rotating plate of the present invention.

[0032] In the figure: 1. cabinet; 2. component mounting plate; 3. outer shell; 4. gas pipe; 5. gas pipe; 6. sealing airbag; 7. through pipe; 8. clamping ring; 9. clamping block; 10. electromagnet; 11. box body; 12. elastic diaphragm; 13. support block; 14. sliding block; 15. connecting rod; 16. reset spring; 17. electrical contact No. 1; 18. electrical contact No. 2; 19. connecting plate; 20. driving motor; 21. rotating plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 8 The present invention provides a technical solution: an inflatable cabinet group capable of rapidly reducing pressure, comprising a cabinet body 1, a component mounting plate 2, an outer shell 3, a gas transmission pipe 4, a gas pipe 5, a sealing airbag 6, a through pipe 7, a clamping ring 8, a clamping block 9, an electromagnet 10, a box body 11, an elastic diaphragm 12, a supporting block 13, a sliding block 14, a connecting rod 15, a reset spring 16, a No. 1 electrical contact 17, a No. 2 electrical contact 18, a connecting plate 19, a driving motor 20, and a rotating plate 21.

[0035] The cabinet body 1 is provided with a cabinet door that can be opened by rotating. A component mounting plate 2 is fixedly installed inside the cabinet body 1. Electrical components are installed on the surface of the component mounting plate 2. A double-layer air chamber structure is provided on the outer surface of the cabinet body 1. The double-layer air chamber structure stores the insulating gas in the cabinet body 1 by providing another air storage chamber on the outer surface of the cabinet body 1, thereby realizing a rapid pressure reduction process. The double-layer air chamber structure includes an outer shell 3. The upper cross-section of the outer shell 3 is an n-shaped structure, and the outer shell 3 is a hollow structure. The outer shell 3 is fixedly installed on the outer surface of the cabinet body 1, and the outer shell 3 is wrapped around the rear surface of the cabinet body 1. As well as the surfaces on both sides, the interior of the cabinet 1 forms an inner air chamber structure, the interior of the outer shell 3 forms an outer air chamber structure, a gas pipe 4 is arranged through the side surface of the cabinet 1, the other end of the gas pipe 4 passes through the surface of the outer shell 3, the two ends of the gas pipe 4 are connected, and the two ends of the gas pipe 4 pass through the inner air chamber structure formed by the cabinet 1 and the outer air chamber structure formed by the outer shell 3. Two gas pipes 4 are arranged in parallel up and down on the two side surfaces of the cabinet 1, and a gas pipe 5 is arranged through the side surface of the outer shell 3. A valve is arranged inside the gas pipe 5 to control the opening and closing, and a secondary sealing structure is arranged inside the cabinet 1. The secondary sealing structure achieves sealing of the cabinet door joint of the cabinet body 1 by the expansion of the sealing airbag 6. The secondary sealing structure includes a sealing airbag 6, which is installed inside the cabinet body 1. The surface of the sealing airbag 6 is fixedly connected to the inner wall of the cabinet body 1, and the sealing airbag 6 is installed on one side of the cabinet door of the cabinet body 1. A through pipe 7 is arranged on the surface of the sealing airbag 6. The other end of the through pipe 7 penetrates the surfaces of the cabinet body 1 and the outer shell 3 and is connected with the outer air chamber structure. An active pressure relief structure is arranged on the upper surface of the cabinet body 1. The active pressure relief structure is manually controlled to achieve a rapid pressure reduction process in the cabinet body 1. The active pressure relief structure includes a connecting plate 19, which is a circular structure and is arranged on the upper surface of the cabinet 1. The surface of the connecting plate 19 is provided with fan-shaped ventilation holes in an annular manner. A driving motor 20 is fixedly installed on the upper surface of the connecting plate 19. The output end of the driving motor 20 is fixedly connected with a rotating plate 21 through the surface of the connecting plate 19. The upper surface of the rotating plate 21 is rotatably connected to the lower surface of the connecting plate 19. The surface of the rotating plate 21 is provided with fan-shaped ventilation holes in an annular manner, and the fan-shaped ventilation holes on the surface of the rotating plate 21 are equal in size to the fan-shaped ventilation holes on the surface of the connecting plate 19.

[0036] like Figure 1 , Figure 2 , Figure 3 and Figure 8As shown, when the device is used, the component mounting plate 2 is installed inside the cabinet 1, the cabinet door structure of the cabinet 1 is closed, and the gas pipe 5 on the side surface of the outer shell 3 is opened. Nitrogen is filled into the interior of the device through the gas pipe 5 as an environmentally friendly insulating gas. The nitrogen enters the interior of the outer shell 3 through the gas pipe 5, and flows into the interior of the cabinet 1 under the penetration of the gas delivery pipe 4 set on one side of the outer shell 3, so as to insulate and protect the electrical components inside the cabinet 1. When the gas pipe 5 is filled with nitrogen, the nitrogen inside the outer shell 3 flows into the interior of the sealing airbag 6 along the through pipe 7, so that the sealing airbag 6 expands and bulges. The bulged sealing airbag 6 is inside the cabinet 1. The joint between the wall and the cabinet door is blocked to increase the sealing performance of the cabinet 1. When the interior of the cabinet 1 needs to be inspected, the active pressure relief structure can be manually opened to discharge the nitrogen in the cabinet 1 to the outside, and the drive motor 20 is started. The drive motor 20 drives the rotating plate 21 to rotate on the lower surface of the connecting plate 19, and the fan-shaped ventilation holes on the surface of the rotating rotating plate 21 are aligned with the fan-shaped ventilation holes on the surface of the connecting plate 19, so that the connecting plate 19 and the rotating plate 21 connect the cabinet 1 with the outside world, and the nitrogen in the cabinet 1 is discharged to the outside, which is convenient for repairing the interior of the cabinet 1 and avoids a large amount of nitrogen from spraying out when the cabinet door of the cabinet 1 is opened, causing harm to the human body.

[0037] A one-way gas delivery structure is arranged inside the gas delivery pipe 4, and the one-way gas delivery structure can realize one-way delivery of insulating gas between the inner gas chamber structure and the outer gas chamber structure, and realize the process of regulating the pressure inside the cabinet 1. The one-way gas delivery structure includes a clamping ring 8, which is a circular ring structure. The outer surface of the clamping ring 8 is fixedly installed on the inner wall of the gas delivery pipe 4, and the side surface of the clamping ring 8 is annularly arranged with a plurality of cylindrical protrusions. The inner surface of the clamping ring 8 is snap-connected with a clamping block 9, and the cross section of the clamping block 9 is a convex structure, and the outer surface of the clamping block 9 is slidably installed on the inner wall of the gas delivery pipe 4. The surface of the clamping block 9 is a magnetic material, and the clamping block 9 is A cylindrical air outlet is provided in an annular shape on the surface, one end of the air outlet on the surface of the clamping block 9 is engaged with the protrusion on the side surface of the clamping ring 8, an electromagnet 10 is provided on the other side of the clamping ring 8, and the electromagnet 10 is fixedly installed on the inner wall of the gas pipe 4 through a bracket, and the coil wire on the surface of the electromagnet 10 penetrates the inner wall of the gas pipe 4, and the magnetic pole of the electromagnet 10 repels the clamping block 9. The two upper and lower parallel one-way gas transmission structures are arranged in opposite directions, and the gas movement direction of the upper one-way gas transmission structure is from the outer air chamber structure to the inner air chamber structure, and the gas movement direction of the lower one-way gas transmission structure is from the inner air chamber structure to the outer air chamber structure;

[0038] like Figure 3 , Figure 5 and Figure 7As shown, after nitrogen is filled into the cabinet 1 from the outer shell 3, nitrogen exists in the outer air chamber structure of the outer shell 3 and the inner air chamber structure of the cabinet 1 at the same time. When a fault occurs in the inner air chamber structure and the air pressure increases, nitrogen flows from the one-way air transmission structure below to the outer air chamber structure, and the cabinet 1 is quickly depressurized. The electromagnet 10 in the one-way air transmission structure below is started, and the electromagnet 10 is started to repel the block 9, pushing the block 9 to slide to one side on the inner wall of the air transmission pipe 4. The block 9 slides and separates from the clamp ring 8, thereby exposing the cylindrical air outlet on the surface of the block 9, and the nitrogen in the inner air chamber structure is discharged from the outer air chamber structure. The cylindrical air outlet on the surface of the block 9 flows into the outer air chamber structure, thereby quickly relieving the pressure inside the cabinet 1. Conversely, when the air pressure in the inner air chamber structure decreases, the nitrogen in the outer air chamber structure flows from the one-way gas transmission structure above to the inner air chamber structure, and the pressure in the cabinet 1 is adjusted. Similarly, the electromagnet 10 in the one-way gas transmission structure above is started, the block 9 slides and separates from the clamping ring 8, and the nitrogen in the outer air chamber structure flows from the cylindrical air outlet on the surface of the block 9 into the inner air chamber structure, and the air pressure in the cabinet 1 is automatically adjusted to ensure the normal operation of the insulating gas in the cabinet 1.

[0039] A pneumatic drive structure is arranged between the upper and lower air supply pipes 4. The pneumatic drive structure realizes automatic opening of the one-way air supply structure through the pressure difference between the inner air chamber structure and the outer air chamber structure. The pneumatic drive structure comprises a box body 11. The box body 11 is a hollow rectangular parallelepiped structure. The box body 11 is embedded and fixed at the connection between the cabinet body 1 and the outer shell 3. An elastic diaphragm 12 is fixedly installed inside the box body 11. The elastic diaphragm 12 divides the interior of the box body 11 into two left and right chambers. Two connecting pipes are arranged through the upper surface of the box body 11. The connecting pipes on the upper surface of the box body 11 respectively connect the two internal chambers with the inner air chamber structure and the outer air chamber structure. A support block 13 is fixedly installed on the inner wall of the box body 11. A sliding block 14 is arranged on one side of the support block 13. The surface of the sliding block 14 is connected to the surface of the support block 13 through a connecting rod 15. The connecting rod 15 is a telescopic structure. A reset spring 16 is arranged on the outer surface of the connecting rod 15. One end of 16 is fixed to the surface of the sliding block 14, and the other end of the return spring 16 is fixed to the surface of the supporting block 13. A No. 1 electrical contact 17 is arranged on the surface of the supporting block 13, and a No. 2 electrical contact 18 is arranged on one side of the No. 1 electrical contact 17. The No. 2 electrical contact 18 is fixedly connected to the surface of the sliding block 14, the No. 1 electrical contact 17 is connected to the power supply, and the No. 2 electrical contact 18 is connected to the electromagnet 10 in the gas supply pipe 4. The No. 1 electrical contact 17 and the No. 2 electrical contact 18 constitute an active switch structure, and the active switch structure is respectively arranged in the left and right chambers of the box body 11, and the active switch structure is opposite to the elastic diaphragm 12. The two active switch structures are respectively connected to the upper one-way gas supply structure and the lower one-way gas supply structure. The active switch structure in the chamber of the box body 11 that is connected to the inner gas chamber structure controls the upper one-way gas supply structure, and the active switch structure in the chamber of the box body 11 that is connected to the outer gas chamber structure controls the lower one-way gas supply structure.

[0040] like Figure 3 , Figure 4 and Figure 6As shown, the one-way gas transmission structure is automatically controlled by the air pressure driving structure. When the air pressure in the inner air chamber structure increases, the pressure in the chamber that connects the box body 11 and the inner air chamber structure is greater than that in the chamber on the other side. The air pressure pushes the elastic diaphragm 12 in the box body 11 to move toward one side of the outer air chamber structure. The elastic diaphragm 12 pushes the sliding block 14 on this side to approach the support block 13. The sliding block 14 simultaneously drives the connecting rod 15 to shorten and the reset spring 16 to compress. When the sliding block 14 and the support block 13 are approaching, the first electrical contact 17 and the second electrical contact 18 are driven to contact, so that the electromagnet 10 at the one-way gas transmission structure below is started, and nitrogen flows from the inner air chamber structure into the outer air chamber structure to perform a pressure reduction process. After the pressure in the inner air chamber structure is restored, the elastic diaphragm 12 rebounds. After the sliding block 14 loses the thrust of the elastic diaphragm 12, it resets Under the action of spring 16, it moves in the opposite direction, so that the No. 1 electrical contact 17 is separated from the No. 2 electrical contact 18, and the electromagnet 10 is closed. After the clamping block 9 in the one-way gas supply structure loses the repulsive force of the electromagnet 10, it is re-engaged with the clamping ring 8 under the push of air pressure to realize the closure of the one-way gas supply structure. On the contrary, when the air pressure in the inner air chamber structure decreases, the pressure in the cavity connected to the box body 11 and the inner air chamber structure is less than that in the cavity on the other side. Similarly, the air pressure pushes the elastic diaphragm 12 in the box body 11 to move toward one side of the inner air chamber structure, and the elastic diaphragm 12 pushes the sliding block 14 on this side to approach the supporting block 13, so that the No. 1 electrical contact 17 on this side is in contact with the No. 2 electrical contact 18, and the one-way gas supply structure above is automatically opened to realize the flow of nitrogen from the outer air chamber structure to the inner air chamber structure, thereby realizing the automatic adjustment process of the air pressure in the cabinet 1.

[0041] Working principle: The component mounting plate 2 is installed inside the cabinet 1, and nitrogen is filled into the interior of the outer shell 3 as an insulating gas through the gas pipe 5. The nitrogen enters the outer shell 3 through the gas pipe 5, and enters the sealing airbag 6 under the transportation of the through pipe 7, so that the sealing airbag 6 expands and blocks the joint between the inner wall of the cabinet 1 and the cabinet door to increase the sealing performance of the device. When the nitrogen is inside the outer shell 3, the air pressure inside the outer shell 3 is greater than the air pressure inside the cabinet 1, and the elastic diaphragm 12 in the box body 11 moves toward the side of the inner air chamber structure, and the elastic diaphragm 12 pushes the sliding block 14 and the support block 13 The electric contacts 17 and 18 on this side are brought close to each other, thereby making the contact between the electric contact No. 1 and the electric contact No. 2, 18 on this side, and starting the one-way gas supply structure above, inputting nitrogen from the outer air chamber structure into the inner air chamber structure, and protecting the electrical components inside the cabinet 1. When the air pressure inside the cabinet 1 is too high, the air pressure pushes the elastic diaphragm 12 inside the box body 11 to move toward the side of the outer air chamber structure, thereby realizing the contact between the electric contact No. 1 and the electric contact No. 2, 18 on this side, thereby starting the contact between the electric contact No. 1 and the electric contact No. 2, 18, and inputting nitrogen from the inner air chamber structure into the outer air chamber structure, thereby realizing a rapid pressure reduction process inside the cabinet 1.

[0042] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An inflatable cabinet set capable of rapid depressurization, comprising a cabinet body (1), a cabinet door that can be opened by rotating is arranged on the front surface of the cabinet body (1), a component mounting plate (2) is fixedly installed inside the cabinet body (1), and an electrical component is installed on the surface of the component mounting plate (2), characterized in that: The outer surface of the cabinet (1) is provided with a double-layer air chamber structure. The double-layer air chamber structure achieves storage of insulating gas in the cabinet (1) by providing another air storage chamber on the outer surface of the cabinet (1), thereby achieving a rapid pressure reduction process. The double-layer air chamber structure comprises an outer shell (3). The upper cross-section of the outer shell (3) is an n-shaped structure, and the outer shell (3) is a hollow structure. The outer shell (3) is fixedly mounted on the outer surface of the cabinet (1), and the outer shell (3) wraps around the rear surface and the two side surfaces of the cabinet (1). The interior of the cabinet (1) forms an inner air chamber structure, and the interior of the outer shell (3) forms an outer air chamber structure. The side surface of the cabinet (1) A gas delivery pipe (4) is provided through the cabinet (1), the other end of the gas delivery pipe (4) passes through the surface of the outer shell (3), the two ends of the gas delivery pipe (4) are connected, and the two ends of the gas delivery pipe (4) pass through the inner air chamber structure formed by the cabinet (1) and the outer air chamber structure formed by the outer shell (3), two gas delivery pipes (4) are provided in parallel on the upper and lower sides of the two side surfaces of the cabinet (1), a gas pipe (5) is provided through the side surface of the outer shell (3), a valve is provided inside the gas pipe (5) to control opening and closing, and a one-way gas delivery structure is provided inside the gas delivery pipe (4), and the one-way gas delivery structure can realize one-way delivery of insulating gas between the inner air chamber structure and the outer air chamber structure. , realizing a process of regulating the pressure in the cabinet (1), the one-way gas transmission structure comprising a clamping ring (8), the clamping ring (8) being a circular ring structure, the outer surface of the clamping ring (8) being fixedly mounted on the inner wall of the gas transmission pipe (4), the inner surface of the clamping ring (8) being snap-connected with a clamping block (9), an electromagnet (10) being arranged on the other side of the clamping ring (8), the electromagnet (10) being fixedly mounted on the inner wall of the gas transmission pipe (4) through a bracket, the coil wire on the surface of the electromagnet (10) passing through the inner wall of the gas transmission pipe (4), the magnetic pole of the electromagnet (10) repelling the clamping block (9), an air pressure driving structure being arranged between the upper and lower gas transmission pipes (4), the air pressure driving structure The pneumatic structure realizes automatic opening of the one-way air transmission structure through the pressure difference between the inner air chamber structure and the outer air chamber structure. The pneumatic drive structure comprises a box body (11). The box body (11) is embedded and fixed at the connection between the cabinet body (1) and the outer shell (3). An elastic diaphragm (12) is fixedly installed inside the box body (11). The elastic diaphragm (12) divides the inside of the box body (11) into two left and right chambers. A support block (13) is fixedly installed on the inner wall of the box body (11). A sliding block (14) is arranged on one side of the support block (13). The surface of the sliding block (14) is connected to the surface of the support block (13) via a connecting rod (15).

2. The inflatable cabinet assembly capable of rapid depressurization according to claim 1, characterized in that: A secondary sealing structure is arranged inside the cabinet body (1), and the secondary sealing structure seals the cabinet door joint of the cabinet body (1) through the expansion of a sealing airbag (6).

3. The inflatable cabinet assembly capable of rapid depressurization according to claim 2, characterized in that: The secondary sealing structure comprises a sealing airbag (6), the sealing airbag (6) being installed inside the cabinet (1), the surface of the sealing airbag (6) being fixedly connected to the inner wall of the cabinet (1), and the sealing airbag (6) being installed on one side of the cabinet door of the cabinet (1), the surface of the sealing airbag (6) being penetrated by a through pipe (7), the other end of the through pipe (7) penetrating the surfaces of the cabinet (1) and the outer shell (3) and being in communication with the outer air chamber structure.

4. The inflatable cabinet assembly capable of rapid depressurization according to claim 1, characterized in that: The side surface of the clamping ring (8) is provided with a plurality of cylindrical protrusions in an annular manner. The cross section of the clamping block (9) is a convex structure, and the outer surface of the clamping block (9) is slidably mounted on the inner wall of the gas transmission pipe (4). The surface of the clamping block (9) is made of magnetic material. The surface of the clamping block (9) is provided with a cylindrical air outlet in an annular manner. One end of the air outlet on the surface of the clamping block (9) is engaged with the protrusion on the side surface of the clamping ring (8). The two upper and lower parallel one-way gas transmission structures are arranged in opposite directions. The gas movement direction of the upper one-way gas transmission structure is from the outer air chamber structure to the inner air chamber structure, and the gas movement direction of the lower one-way gas transmission structure is from the inner air chamber structure to the outer air chamber structure.

5. The inflatable cabinet assembly capable of rapid depressurization according to claim 1, characterized in that: The box body (11) is a hollow rectangular parallelepiped structure. Two connecting tubes are provided through the upper surface of the box body (11). The connecting tubes on the upper surface of the box body (11) respectively connect the two internal chambers with the inner air chamber structure and the outer air chamber structure. The connecting rod (15) is a telescopic structure. A return spring (16) is provided on the outer surface of the connecting rod (15). One end of the return spring (16) is fixed to the surface of the sliding block (14). The other end of the return spring (16) is fixed to the surface of the supporting block (13). A No. 1 electrical contact (17) is provided on the surface of the supporting block (13). A No. 2 electrical contact (18) is provided on one side of the No. 1 electrical contact (17). The No. 2 electrical contact (18) is connected to the sliding block (14). The first electrical contact (17) is connected to a power source, the second electrical contact (18) is connected to an electromagnet (10) in the gas supply pipe (4), the first electrical contact (17) and the second electrical contact (18) constitute an active switch structure, the active switch structure is respectively arranged in the left and right chambers of the box body (11), and the active switch structure is opposite to the elastic diaphragm (12), the two active switch structures are respectively connected to the upper one-way gas supply structure and the lower one-way gas supply structure, the active switch structure in the chamber of the box body (11) that is connected to the inner gas chamber structure controls the upper one-way gas supply structure, and the active switch structure in the chamber of the box body (11) that is connected to the outer gas chamber structure controls the lower one-way gas supply structure.

6. The inflatable cabinet assembly capable of rapid depressurization according to claim 1, characterized in that: An active pressure relief structure is provided on the upper surface of the cabinet (1), and the active pressure relief structure is manually controlled to achieve a rapid pressure reduction process in the cabinet (1).

7. The inflatable cabinet assembly capable of rapid depressurization according to claim 6, characterized in that: The active pressure relief structure comprises a connecting plate (19), the connecting plate (19) being a circular structure, and the connecting plate (19) being arranged through the upper surface of the cabinet (1), the surface of the connecting plate (19) being provided with fan-shaped ventilation holes in an annular manner, the upper surface of the connecting plate (19) being fixedly mounted with a driving motor (20), the output end of the driving motor (20) being provided with a rotating plate (21) through the surface of the connecting plate (19), the upper surface of the rotating plate (21) being rotatably connected to the lower surface of the connecting plate (19), the surface of the rotating plate (21) being provided with fan-shaped ventilation holes in an annular manner, and the fan-shaped ventilation holes on the surface of the rotating plate (21) are of the same size as the fan-shaped ventilation holes on the surface of the connecting plate (19).

Images