Gas pressure relief and recovery device for gas-insulated switchgear

Abstract

The invention discloses a gas pressure relief recovery device for a gas-insulated switchgear, which is characterized in that a pressure relief cylinder is mounted in a flange plate, a sealing plate is arranged at the upper part in the pressure relief cylinder, a sealing plug is arranged at the lower part in the pressure relief cylinder, a plurality of stabilizing columns are distributed below the sealing plate, a plurality of stabilizing grooves are formed in the sealing plug, a mounting sleeve is mounted in the middle of the sealing plug, and a contact is arranged in the mounting sleeve; springs are installed in the stabilizing columns and the stabilizing grooves, a plurality of exhaust holes are formed in the outer wall of the pressure relief cylinder, the sealing plate can move downwards under the action of gas pressure, the springs are compressed at the moment, and when the gas pressure is insufficient, the springs can release the stroke, so that the sealing plate is automatically reset. According to the pressure relief device, the sealing plate which continuously moves downwards can be pressed on the contact, the contact slides in the installation sleeve, meanwhile, the spring is installed in the installation sleeve and used for buffering the displacement of the contact, additional buffering is provided for the displacement of the sealing plate, damage caused by direct impact is avoided, and meanwhile the service life of the pressure relief device is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure relief of gas cabinets, and in particular relates to a gas pressure relief recovery device for gas cabinets. Background Art

[0002] The gas cabinet is a common power distribution equipment on the power grid. Existing gas cabinets are all equipped with a gas chamber, and the gas chamber is filled with insulating gas at a certain pressure to ensure the safe operation of the gas cabinet. At present, there are still many gas cabinets on the power grid that are filled with SF6 gas, which has strong insulation and arc extinguishing capabilities. When an arc fault occurs in the gas chamber of the gas cabinet, the gas pressure in the gas chamber suddenly increases. In order to reduce the pressure of the gas on the gas chamber and ensure the personal safety of the operator, a pressure relief device is often installed under the gas chamber of the gas cabinet to allow the gas to be quickly discharged from the gas chamber of the gas cabinet.

[0003] Reference application number: 202311720136.5, a gas cabinet pressure relief device and a gas cabinet thereof; it discloses a gas cabinet body and a pressure relief assembly, the pressure relief assembly includes a pressure relief pipe, a conducting pipe is installed at the bottom of the pressure relief pipe, a threaded mounting seat is threadedly installed at one end of the pressure relief pipe away from the gas cabinet body, a sliding rod is installed on the threaded mounting seat, one end of the sliding rod extends into the pressure relief pipe, a sealing plate is slidably arranged inside the conducting pipe, the sealing plate is fixed on the sliding rod, a connecting seat is installed at the bottom of the conducting pipe, a conducting cavity and an installation cavity are respectively opened inside the connecting seat from top to bottom, and the conducting cavity and the installation cavity are connected through a conducting hole. The gas cabinet pressure relief device and the gas cabinet thereof can adjust the overall position of the sealing plate by rotating and adjusting the connection distance between the threaded mounting seat and the conducting pipe during operation, so that the position of the sealing plate can be effectively adjusted according to the pressure in the overall insulating air chamber.

[0004] In the above scheme, the pressure relief process is realized by the sealing plate, the sliding rod and the reset spring. The displacement of the sealing plate is realized by the reset spring alone, and the impact caused by it is easy to reduce the service life of the pressure relief device; and the sealing effect inside the gas cylinder is poor, which is easy to cause gas leakage. In the prior art, the installation and disassembly process of the gas cylinder is relatively cumbersome, and the staff needs to adjust multiple fasteners to achieve the purpose of disassembly and installation; and when the gas pressure inside the gas cabinet drops or gas needs to be supplemented, the staff needs to manually fill the gas. Summary of the invention

[0005] The purpose of the present invention is to provide a gas pressure relief recovery device for an inflatable cabinet to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A gas pressure relief recovery device for an inflatable cabinet comprises an air box and a pressure relief chamber, a pressure relief hole communicating with the pressure relief chamber is arranged below the air box, a plurality of connecting columns are arranged at the bottom of the air box, and flanges are installed on the connecting columns;

[0008] A pressure relief cylinder is installed in the flange, a sealing plate is provided on the upper part of the pressure relief cylinder, a sealing plug is provided on the lower part of the pressure relief cylinder, a plurality of stabilizing columns are distributed below the sealing plate, a plurality of stabilizing grooves are provided inside the sealing plug, a mounting sleeve is installed in the middle of the sealing plug, a contact is provided inside the mounting sleeve, springs are installed inside the stabilizing columns and stabilizing grooves, and a plurality of exhaust holes are provided on the outer wall of the pressure relief cylinder;

[0009] A gas cylinder is installed outside the pressure relief cylinder, and the gas cylinder includes a sealing chamber and an air inlet chamber, and the sealing chamber is used to seal the inside of the gas cylinder; the air inlet chamber is used to absorb the gas discharged from the exhaust hole, and a fitting ring is provided above the air inlet chamber; a base is installed below the gas cylinder, and an adjusting mechanism is installed at the bottom end of the base, and the adjusting mechanism is used to adjust the position of the gas cylinder; a power assist mechanism is provided in the gas box, and the power assist mechanism is used to push the sealing plate to move.

[0010] Furthermore, an air guide plate is provided between the sealing chamber and the air inlet chamber, wherein a plurality of through holes are opened on the surface of the air guide plate, a rotating motor is installed below the sealing chamber, an output end of the rotating motor is connected to a screw, a stabilizing plate is provided in the sealing chamber, a threaded hole is provided at the rear end of the stabilizing plate, the threaded hole cooperates with the screw, a positioning shaft is inserted into the stabilizing plate, a sealing disk is provided on one side of the stabilizing plate, and the sealing disk is below the air guide plate.

[0011] Furthermore, a plurality of sealing heads are distributed on the surface of the sealing disk, wherein the sealing heads cooperate with the through holes on the surface of the air guide plate. The sealing heads are made of rubber material.

[0012] Furthermore, one end of the base is a semicircular arc structure, the lower outer wall of the gas storage cylinder is provided with an outer ring, two ends of the base are provided with slide grooves, a slider is slidably mounted on the slide groove, a push plate is provided on the slider, one side of the push plate is a semicircular arc structure, wherein a card slot is provided inside the push plate, and a positioning column is provided at one end of the push plate.

[0013] Furthermore, the adjustment mechanism includes a top plate and a movable plate, the top plate is installed below the base, a track is installed on the surface of the pressure relief chamber, the movable plate is slidably connected to the track, a lifting motor is installed on the surface of the movable plate, and the output end of the lifting motor is supported below the top plate.

[0014] Furthermore, hole columns are symmetrically arranged at the bottom of the movable plate, and limiting columns coaxially matched with the hole columns are symmetrically arranged on both sides of the top plate.

[0015] Furthermore, an axis block is provided at the bottom center of the movable plate, and a long threaded rod is matched on the axis block. A displacement motor is installed inside the pressure relief chamber, wherein the output end of the displacement motor is connected to the long threaded rod.

[0016] Furthermore, a sliding rod is installed on the air box, a support plate is fixed above the sliding rod, an auxiliary motor is installed on the support plate, an output end of the auxiliary motor is connected to a threaded shaft, a long plate is installed on the threaded shaft, and a vertical downward push rod is provided on one side of the long plate.

[0017] The technical solution of the present invention has the following beneficial effects:

[0018] 1. The sealing plate will move downward under the action of gas pressure. At this time, the spring will be compressed. When the gas pressure is insufficient, the spring will release the stroke to automatically reset the sealing plate. The sealing plate that continues to move downward will press on the contact. The contact slides inside the mounting sleeve. At the same time, a spring is also installed inside the mounting sleeve to buffer the displacement of the contact, providing additional buffer for the displacement of the sealing plate, avoiding damage caused by direct impact, and also extending the service life of the pressure relief device.

[0019] 2. When the gas storage inside the gas cylinder is full or when the gas cylinder needs to be replaced: by starting the rotating motor, the screw and the threaded hole on the stabilizing plate engage with each other, thereby driving the stabilizing plate to move upward, and the sealing disk is close to the through hole on the surface of the gas guide plate, thereby blocking the through hole on the surface of the gas guide plate, which can improve the multiple sealing effect and prevent gas leakage.

[0020] 3. Push the push plate so that the card slot is stuck on the outer ring, thereby further improving the stability of the gas cylinder and preventing the gas cylinder from shaking or detaching from the base; the adjustment mechanism is used to adjust the position of the gas cylinder, while improving the convenience of installation and disassembly.

[0021] 4. When the gas inside the gas cylinder is used as a backup gas source or a gas replenishing device, start the rotating motor, and the vertically downward push rod will contact the surface of the sealing plate, pushing the sealing plate downward. The sealing plate moves to the bottom of the exhaust hole, and the high-pressure gas inside the gas cylinder enters the gas box through the exhaust hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a disassembled view of the interior of the pressure relief chamber of the present invention.

[0025] Figure 3It is a cross-sectional view of the pressure relief chamber of the present invention.

[0026] Figure 4 It is an enlarged view of point A of the present invention.

[0027] Figure 5 It is a cross-sectional view of the interior of the pressure relief cylinder of the present invention.

[0028] Figure 6 This is a disassembled view of the interior of the sealed chamber of the present invention.

[0029] Figure 7 It is a schematic diagram of the installation of the push plate of the present invention.

[0030] Figure 8 It is a schematic diagram of the power assist mechanism of the present invention.

[0031] Reference numerals: 11, mechanism room; 12, air box; 13, cable room; 14, pressure relief room; 15, pressure relief hole; 16, connecting column; 17, flange;

[0032] 20. Pressure relief cylinder; 21. Sealing plate; 22. Sealing plug; 23. Stable groove; 24. Stable column; 25. Exhaust hole; 26. Spring; 27. Mounting sleeve; 28. Contact;

[0033] 30. Gas storage bottle; 31. Sealing chamber; 32. Rotating motor; 33. Screw; 34. Stabilizing plate; 35. Positioning shaft; 36. Sealing disk; 37. Sealing head; 38. Air guide plate; 39. Threaded hole;

[0034] 40. air inlet chamber; 41. fitting ring; 42. outer ring;

[0035] 50. Base; 51. Slide; 52. Push plate; 53. Slider; 54. Positioning column; 55. Slot;

[0036] 60. Track; 61. Moving plate; 62. Hole column; 63. Top plate; 64. Limit column; 65. Lifting motor; 66. Axis block; 67. Displacement motor; 68. Long threaded rod;

[0037] 70. Auxiliary motor; 71. Long board; 72. Push rod; 73. Support plate; 74. Sliding rod; 76. Threaded shaft; 80. Pressure gauge. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] Embodiment 1:

[0040] refer to Figure 4 A gas pressure relief recovery device for an inflatable cabinet includes a mechanism chamber 11, an air box 12, a cable chamber 13, and a pressure relief chamber 14. A pressure relief hole 15 communicating with the pressure relief chamber 14 is provided below the air box 12. A plurality of connecting columns 16 are provided at the bottom of the air box 12. A flange 17 is installed on the connecting column 16.

[0041] In the above scheme, the connecting column 16 faces the pressure relief chamber 14, and the flange 17 is penetrated with a countersunk hole. The countersunk hole is concentrically matched with the connecting column 16 and then rotated and installed in the countersunk hole by a nut, thereby completing the connection of the flange 17.

[0042] refer to Figure 1-Figure 5 A pressure relief cylinder 20 is installed in the flange 17, a sealing plate 21 is provided on the upper part of the pressure relief cylinder 20, a sealing plug 22 is provided on the lower part of the pressure relief cylinder 20, a plurality of stabilizing columns 24 are distributed below the sealing plate 21, a plurality of stabilizing grooves 23 are provided inside the sealing plug 22, a mounting sleeve 27 is installed in the middle of the sealing plug 22, a contact 28 is provided inside the mounting sleeve 27, a spring 26 is installed inside the stabilizing column 24 and the stabilizing groove 23, and a plurality of exhaust holes 25 are provided on the outer wall of the pressure relief cylinder 20;

[0043] In the above scheme, three stabilizing columns 24 are arranged in an annular distribution, the stabilizing columns 24 and the stabilizing grooves 23 are kept concentric, and a spring 26 is installed between the stabilizing columns 24 and the stabilizing grooves 23, which enhances the stability of the structure and ensures the smooth movement of the sealing plate 21 when under pressure, reduces malfunctions caused by vibration or unstable factors, and improves the working reliability of the pressure relief device; when an arc fault occurs in the gas box of the inflatable cabinet, the gas pressure in the gas box of the inflatable cabinet suddenly increases, and the sealing plate 21 is affected by the gas pressure and moves downward, at which time the spring 26 is compressed, When the gas pressure inside the inflatable cabinet is insufficient, the spring 26 will release its stroke and automatically reset the sealing plate 21; the sealing plate 21 that continues to move downward will press on the contact 28, and the contact 28 slides inside the mounting sleeve 27. At the same time, a spring is also installed inside the mounting sleeve 27 to cushion the displacement of the contact 28, providing additional cushioning for the displacement of the sealing plate 21, avoiding damage caused by direct impact, and also extending the service life of the pressure relief device; the sealing plate 21 moves to the bottom of the exhaust hole 25, and the gas in the inflatable cabinet air box 12 is discharged from the exhaust hole 25.

[0044] refer to Figure 4 and Figure 6A gas cylinder 30 is installed outside the pressure relief cylinder 20, and the gas cylinder 30 includes a sealing chamber 31 and an air inlet chamber 40. The sealing chamber 31 is used to block the inside of the gas cylinder 30; an air guide plate 38 is provided between the sealing chamber 31 and the air inlet chamber 40, wherein a plurality of through holes are opened on the surface of the air guide plate 38, a rotating motor 32 is installed below the sealing chamber 31, and a screw 33 is connected to the output end of the rotating motor 32, a stabilizing plate 34 is provided in the sealing chamber 31, and a threaded hole 39 is provided at the tail end of the stabilizing plate 34, and the threaded hole 39 cooperates with the screw 33, a positioning shaft 35 is inserted into the stabilizing plate 34, and a sealing disk 36 is provided on one side of the stabilizing plate 34, and the sealing disk 36 is below the air guide plate 38;

[0045] In the above scheme, the through holes on the surface of the air guide plate 38 are used for gas to enter the gas cylinder 30 from the through holes; when the gas in the gas cylinder 30 is full or when the gas cylinder needs to be replaced: by starting the rotating motor 32, the screw 33 and the threaded hole 39 on the stabilizing plate 34 are meshed with each other, thereby driving the stabilizing plate 34 to move upward, and the sealing plate 36 is close to the through holes on the surface of the air guide plate 38, thereby blocking the through holes on the surface of the air guide plate 38, which can improve the multiple sealing effect and prevent gas leakage. The positioning shaft 35 is inserted on both sides of the stabilizing plate 34 to improve the smooth displacement of the stabilizing plate 34.

[0046] Further references Figure 4 and Figure 6 A plurality of sealing heads 37 are distributed on the surface of the sealing disk 36 , wherein the sealing heads 37 cooperate with the through holes on the surface of the air guide plate 38 .

[0047] In the above scheme, the sealing head 37 is made of rubber material, which has good elasticity and plasticity and can produce slight deformation under pressure, so as to fit tightly to the sealing surface and form an effective seal; the upper chamfer is set to improve the contact sealing effect; when the sealing disk 36 is close to the air guide plate 38, the sealing head 37 cooperates with the through hole to seal the through hole.

[0048] refer to Figure 4 The air inlet chamber 40 is used to absorb the gas discharged from the exhaust hole 25; a fitting ring 41 is provided above the air inlet chamber 40. The inner diameter of the fitting ring 41 matches the outer wall of the pressure relief cylinder 20. The gas storage bottle 30 is installed so that the fitting ring 41 is wrapped around the outer wall of the pressure relief cylinder 20 to locate the installation position of the gas storage bottle 30. The gas inside the inflatable cabinet enters from the exhaust hole 25 and is discharged from the exhaust hole 25 into the air inlet chamber 40. The gas in the air inlet chamber 40 enters the gas storage bottle 30 through the through hole on the surface of the air guide plate 38.

[0049] Embodiment 2:

[0050] refer to Figure 2 and Figure 7A base 50 is installed below the gas cylinder 30; one end of the base 50 is a semicircular arc structure, an outer ring 42 is provided on the lower outer wall of the gas cylinder 30, and two ends of the base 50 are provided with slide grooves 51, a slider 53 is slidably installed on the slide groove 51, and a push plate 52 is provided on the slider 53, and one side of the push plate 52 is a semicircular arc structure, wherein a card slot 55 is provided inside the push plate 52;

[0051] In the above scheme, one end of the base 50 is a semicircular arc structure, and the gas cylinder 30 is placed above the semicircular arc to fit the installation position of the gas cylinder 30. The semicircular arc structure can fit the bottom contour of the gas cylinder 30 tightly, provide stable support, prevent the gas cylinder 30 from moving or tilting in the horizontal direction, and ensure its stability under various conditions of use; at the same time, it can quickly locate the placement position of the gas cylinder 30; the slide groove 51 and the slider 53 are T-shaped structure slide grooves, and the slide groove 51 and the slider 53 cooperate together to push the push plate 52 so that the slot 55 is stuck on the outer ring 42, thereby further improving the stability of the gas cylinder 30 and preventing the gas cylinder 30 from shaking or detaching from the base 50. One side of the push plate 52 is in a semicircular arc structure, and the connecting end is a base 50 with a semicircular arc structure. The semicircular arc structures of the two can be tightly and accurately docked, providing stable and uniform support for the gas cylinder 30 placed on the base 50, reducing the shaking or tilting of the object due to unstable support, and further improving the stability of the overall structure and the convenience of installation of the gas cylinder 30.

[0052] Further references Figure 2 and Figure 7 A positioning column 54 is provided at one end of the push plate 52. A hole is provided on the surface of the base 50. When the push plate 52 is pushed to fit the side of the gas cylinder 30, the positioning column 54 and the hole on the surface of the base 50 are kept concentric, and a latch is connected between the two, thereby limiting the position of the push plate 52, thereby stabilizing the installation of the gas cylinder 30.

[0053] Embodiment three:

[0054] refer to Figure 1-Figure 3 The bottom end of the base 50 is provided with an adjustment mechanism, which is used to adjust the position of the gas cylinder 30. The adjustment mechanism comprises a top plate 63 and a moving plate 61, the top plate 63 is installed below the base 50, a track 60 is installed on the surface of the pressure relief chamber 14, the moving plate 61 is slidably connected to the track 60, a lifting motor 65 is installed on the surface of the moving plate 61, and the output end of the lifting motor 65 is supported below the top plate 63.

[0055] In the above scheme, the height of the base 50, that is, the installation height of the gas cylinder 30, is increased by controlling the start of the lifting motor 65; to remove the gas cylinder 30, it is necessary to control the start of the lifting motor 65 to separate the fitting ring 41 from the pressure relief cylinder 20; to install the gas cylinder 30, it is necessary to control the start of the lifting motor 65 to wrap the fitting ring 41 on the pressure relief cylinder 20 so that the exhaust hole 25 enters the air inlet chamber 40.

[0056] Further references Figure 3 , the bottom of the movable plate 61 is symmetrically provided with hole columns 62, and the two sides of the top plate 63 are symmetrically provided with limit columns 64 coaxially matched with the hole columns 62. During the lifting process of the base 50 controlled by the lifting motor 65, the concentric cooperation between the hole columns 62 and the limit columns 64 can improve the moving stability of the base 50.

[0057] Further references Figure 2 A shaft block 66 is provided at the bottom center of the movable plate 61 , and a long threaded rod 68 is matched on the shaft block 66 . A displacement motor 67 is installed inside the pressure relief chamber 14 , wherein the output end of the displacement motor 67 is connected to the long threaded rod 68 .

[0058] In the above scheme, the gas cylinder 30 is further disassembled: the lifting motor 65 is started to separate the fitting ring 41 from the pressure relief cylinder 20, and the displacement motor 67 is started, and the long threaded rod 68 and the axis block 66 are engaged with each other, that is, the moving plate 61 moves outward, so that the gas cylinder 30 is separated from the pressure relief chamber 14, so that the staff can easily remove the gas cylinder 30; the push plate 52 is moved to remove the gas cylinder 30, and then the gas cylinder 30 is lifted upward, which is convenient for the replacement of the gas cylinder 30 and improves the overall practicality of the device.

[0059] Embodiment 4:

[0060] refer to Figure 8 A power-assisting mechanism is provided in the air box 12, and the power-assisting mechanism is used to push the sealing plate 21 to move; the power-assisting mechanism includes a support plate 73 and a slide bar 74, a slide bar 74 is installed on the air box 12, a support plate 73 is fixed above the slide bar 74, an auxiliary motor 70 is installed on the support plate 73, and a threaded shaft 76 is connected to the output end of the auxiliary motor 70, a long plate 71 is installed on the threaded shaft 76, and a vertically downward push rod 72 is provided on one side of the long plate 71.

[0061] In the above scheme, the gas cylinder 30 stores gases such as nitrogen and sulfur hexafluoride; when the gas inside the gas cylinder 30 is needed as a backup gas source or a gas supplement device, the rotating motor 32 is started, the sealing disk 36 is away from the air guide plate 38, that is, the sealing head 37 is separated from the mutual cooperation of the through hole, and the auxiliary motor 70 is started, the threaded shaft 76 is meshed with the long plate 71, and the long plate 71 will move downward, that is, the vertically downward push rod 72 will contact the surface of the sealing plate 21, push the sealing plate 21 downward, and the sealing plate 21 will move to the bottom of the exhaust hole 25, and the high-pressure gas inside the gas cylinder 30 will enter the gas box 12 through the exhaust hole 25. It is worth noting that: the outer wall of the gas cylinder 30 has a pressure gauge 80, which is used to observe the gas volume inside the gas cylinder 30 and control the corresponding motor start through the computer control system; the pressure gauge 80 is an electronically controlled pressure gauge, which is used to transmit electrical signal feedback to the computer to make corresponding control instructions.

[0062] Similarly, the gas cylinder 30 is used for gas pressure relief and recovery: the gas pressure in the gas box of the gas filling cabinet suddenly increases, and the excess gas enters the gas cylinder 30 for storage. When the gas pressure inside the gas filling cabinet drops or gas needs to be supplemented, the rotating motor 32 is started, and the sealing disk 36 moves away from the air guide plate 38, that is, the sealing head 37 is disengaged from the mutual cooperation of the through hole, and by starting the auxiliary motor 70, the threaded shaft 76 engages with the long plate 71, and the long plate 71 will move downward, that is, the vertically downward push rod 72 will contact the surface of the sealing plate 21, pushing the sealing plate 21 downward, and the sealing plate 21 moves to the bottom of the exhaust hole 25, and the high-pressure gas inside the gas cylinder 30 passes through the exhaust hole 25 into the gas box 12.

[0063] The specific implementation process of the present invention is as follows (combined with Embodiment 1 to Embodiment 4):

[0064] Installation of the gas cylinder 30: Start the displacement motor 67, the long threaded rod 68 and the axis block 66 are meshed with each other, that is, the moving plate 61 moves outward, and the gas cylinder 30 is placed on the base 50, the slide groove 51 and the slider 53 cooperate together, and the push plate 52 is pushed so that the card slot 55 is stuck on the outer ring 42; start the displacement motor 67 again so that the gas cylinder 30 is directly below the pressure relief cylinder 20; then control the lifting motor 65 to start, the position height of the gas cylinder 30 rises, and the fitting ring 41 is wrapped on the pressure relief cylinder 20, so that the exhaust hole 25 enters the air inlet chamber 40;

[0065] Disassembly of the gas cylinder 30: Start the rotating motor 32, the screw 33 engages with the threaded hole 39 on the stabilizing plate 34, thereby driving the stabilizing plate 34 to move upward, and when the sealing plate 36 is close to the air guide plate 38, the sealing head 37 cooperates with the through hole to seal the through hole; control the lifting motor 65 to start, the position height of the gas cylinder 30 is lowered, start the displacement motor 67, the long threaded rod 68 engages with the axis block 66, that is, the moving plate 61 moves outward; remove the push plate 52, and then lift the gas cylinder 30 upward to facilitate the replacement of the gas cylinder 30.

[0066] Pressure relief process: The gas pressure in the gas box of the inflatable cabinet suddenly increases, and the sealing plate 21 is affected by the gas pressure and moves downward. At this time, the spring 26 is compressed, and the sealing plate 21 moves to the bottom of the exhaust hole 25. The gas in the gas box 12 of the inflatable cabinet is discharged from the exhaust hole 25 into the gas storage bottle 30;

[0067] When the gas inside the gas cylinder 30 is used as a backup gas source or a gas replenishing device or for gas pressure relief and recovery: the sealing disk 36 is away from the air guide plate 38, that is, the sealing head 37 is separated from the mutual cooperation of the through hole, and by starting the auxiliary motor 70, the threaded shaft 76 engages with the long plate 71, and the long plate 71 will move downward, that is, the vertically downward push rod 72 will contact the surface of the sealing plate 21, pushing the sealing plate 21 downward, and the sealing plate 21 moves to the bottom of the exhaust hole 25, and the high-pressure gas inside the gas cylinder 30 enters the inside of the gas box 12 through the exhaust hole 25.

[0068] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Various modifications or equivalent substitutions may be made to the present invention within the essence and protection scope of the present invention. Such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

[0069] In the description of the present invention, it should be noted that the terms "inside", "front", "back", "left", "right", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the circle, or are the orientation or positional relationship in which the product of the invention is usually placed when in use, and are only used to facilitate the description of the present invention and simplify the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, these terms indicating orientation or positional relationship cannot be understood as limiting the present invention.

[0070] In the description of the present invention, it is further explained that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, these terms can indicate a fixed connection, a detachable connection, or an integral connection between elements; they can also indicate a mechanical connection, an electrical connection; they can also indicate a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

Claims

1. A gas pressure relief recovery device for an inflatable cabinet, comprising a gas box (12) and a pressure relief chamber (14), characterized in that: A pressure relief hole (15) communicating with the pressure relief chamber (14) is provided below the air box (12); a plurality of connecting columns (16) are provided at the bottom of the air box (12); and a flange (17) is installed on the connecting columns (16); A pressure relief cylinder (20) is installed in the flange (17), a sealing plate (21) is provided at the top of the pressure relief cylinder (20), a sealing plug (22) is provided at the bottom of the pressure relief cylinder (20), a plurality of stabilizing columns (24) are distributed below the sealing plate (21), a plurality of stabilizing grooves (23) are provided inside the sealing plug (22), a mounting sleeve (27) is installed in the middle of the sealing plug (22), a contact (28) is provided inside the mounting sleeve (27), a spring (26) is installed inside the stabilizing column (24) and the stabilizing groove (23), and a plurality of exhaust holes (25) are provided on the outer wall of the pressure relief cylinder (20); A gas storage bottle (30) is installed outside the pressure relief cylinder (20), and the gas storage bottle (30) comprises a sealing chamber (31) and an air inlet chamber (40), wherein the sealing chamber (31) is used to seal the interior of the gas storage bottle (30); the air inlet chamber (40) is used to absorb the gas discharged from the exhaust hole (25), and a fitting ring (41) is provided above the air inlet chamber (40); A base (50) is installed below the gas storage bottle (30), and an adjustment mechanism is installed at the bottom end of the base (50), and the adjustment mechanism is used to adjust the position of the gas storage bottle (30); The air box (12) is provided with a boosting mechanism, and the boosting mechanism is used to push the sealing plate (21) to move.

2. The gas pressure relief recovery device for an inflatable cabinet according to claim 1, characterized in that: An air guide plate (38) is provided between the sealing chamber (31) and the air inlet chamber (40), wherein a plurality of through holes are provided on the surface of the air guide plate (38); a rotating motor (32) is installed below the sealing chamber (31); an output end of the rotating motor (32) is connected to a screw rod (33); a stabilizing plate (34) is provided in the sealing chamber (31); a threaded hole (39) is provided at the rear end of the stabilizing plate (34); the threaded hole (39) cooperates with the screw rod (33); a positioning shaft (35) is inserted into the stabilizing plate (34); a sealing disk (36) is provided on one side of the stabilizing plate (34); and the sealing disk (36) is below the air guide plate (38).

3. The gas pressure relief recovery device for an inflatable cabinet according to claim 2, characterized in that: A plurality of sealing heads (37) are distributed on the surface of the sealing disk (36), wherein the sealing heads (37) cooperate with through holes on the surface of the air guide plate (38).

4. The gas pressure relief recovery device for an inflatable cabinet according to claim 3, characterized in that: The sealing head (37) is made of rubber material.

5. The gas pressure relief recovery device for an inflatable cabinet according to claim 1, characterized in that: One end of the base (50) is a semicircular arc structure, the lower outer wall of the gas storage bottle (30) is provided with an outer ring (42), both ends of the base (50) are provided with sliding grooves (51), a slider (53) is slidably mounted on the sliding groove (51), a push plate (52) is provided on the slider (53), one side of the push plate (52) is a semicircular arc structure, and a card slot (55) is provided inside the push plate (52).

6. The gas pressure relief recovery device for an inflatable cabinet according to claim 5, characterized in that: A positioning column (54) is provided at one end of the push plate (52).

7. The gas pressure relief recovery device for an inflatable cabinet according to claim 1, characterized in that: The regulating mechanism comprises a top plate (63) and a movable plate (61), wherein the top plate (63) is installed below the base (50), a track (60) is installed on the surface of the pressure relief chamber (14), the movable plate (61) is slidably connected to the track (60), a lifting motor (65) is installed on the surface of the movable plate (61), and an output end of the lifting motor (65) is supported below the top plate (63).

8. The gas pressure relief recovery device for an inflatable cabinet according to claim 7, characterized in that: The bottom of the movable plate (61) is symmetrically provided with hole columns (62), and both sides of the top plate (63) are symmetrically provided with limit columns (64) coaxially matched with the hole columns (62).

9. The gas pressure relief recovery device for an inflatable cabinet according to claim 8, characterized in that: A shaft block (66) is provided at the bottom center of the movable plate (61), and a long threaded rod (68) is matched on the shaft block (66). A displacement motor (67) is installed inside the pressure relief chamber (14), wherein the output end of the displacement motor (67) is connected to the long threaded rod (68).

10. The gas pressure relief recovery device for an inflatable cabinet according to claim 1, characterized in that: The power-assisting mechanism comprises a support plate (73) and a slide bar (74), wherein the slide bar (74) is installed on the air box (12), the support plate (73) is fixed above the slide bar (74), an auxiliary motor (70) is installed on the support plate (73), the output end of the auxiliary motor (70) is connected to a threaded shaft (76), a long plate (71) is installed on the threaded shaft (76), and a vertically downward push rod (72) is provided on one side of the long plate (71).

Images