gas relay

Abstract

This invention discloses a gas relay, which includes a relay body, a housing, and a fire extinguishing component. The housing includes a first housing and a second housing. The first housing covers the relay body, and the second housing is mounted on the first housing and rotatable relative to the first housing along its width. In a first position, the second housing is housed within the first housing and located above the relay body, with both housings protecting the relay body. In a second position, the second housing rotates to below the relay body, with the first and second housings cooperating to enclose the relay body. The fire extinguishing component is housed within the housing. This invention provides a gas relay with a simple structure and high safety performance.

Description

Technical Field

[0001] This invention relates to the field of transformers, and more specifically, to a gas relay. Background Technology

[0002] The gas relay of a power transformer, also known as the gas relay body, is a very important non-electrical safety protection device on an oil-immersed transformer. It detects faults by monitoring changes in gas and oil flow inside the transformer, and then issues an alarm or cuts off the power supply to prevent the fault from escalating. When the gas relay is installed externally, it is usually equipped with a special protective cover. The cover is rainproof and shockproof and is usually designed to completely cover the gas relay. The most common structural form is an integral enclosure.

[0003] In related technologies, the protective cover only provides basic physical protection against rain. When the relay body is damaged, it will lead to the leakage of flammable gas. The protective cover cannot provide protection in the early stage of gas leakage. Operators may not be able to detect the potential explosion risk and miss the opportunity for prevention and handling. Once it encounters an external open flame, the protective cover itself cannot block the spread of flames and may even burn, exacerbating the fire. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose a gas relay with a simple structure, capable of providing protection in the early stages of gas leakage, and with high safety performance.

[0006] A gas relay according to an embodiment of the present invention includes: a relay body; a housing, the housing including a first housing and a second housing, the first housing covering the relay body, the second housing being disposed on the first housing and rotatable relative to the first housing along the width direction of the first housing, in a first position, the second housing being housed inside the first housing and located above the relay body, the first housing and the second housing protecting the relay body, in a second position, the second housing rotating to below the relay body, the first housing and the second housing cooperating to close the relay body; and a fire extinguishing assembly disposed within the housing, the gas relay having a first state and a second state, in which the gas relay is in the first state when the relay body is operating normally, the second housing being housed inside the first housing and located above the relay body, the first housing and the second housing protecting the relay body, in which the gas relay is in the second state when the relay body leaks, the second housing rotating to below the relay body, the first housing and the second housing cooperating to close the relay body, and the fire extinguishing assembly spraying a fire extinguishing medium onto the relay body so that the fire extinguishing medium covers the outer peripheral surface of the relay body and the inner peripheral surface of the housing.

[0007] The gas relay of this invention includes a housing and a fire extinguishing assembly. When a gas leak is detected, the second housing rotates to a second position, closing in with the first housing to form a fully enclosed space. This isolates the leaking gas from external open flames, preventing the risk of combustion and explosion at the source and providing reliable fire protection for the safe operation of the gas relay. Simultaneously, as the first and second housings close to form the enclosed space, the fire extinguishing assembly activates, spraying a fire extinguishing medium onto the relay body. The fire extinguishing medium covers the outer circumference of the relay body and the inner circumference of the housing, quickly eliminating the combustion-supporting conditions required for combustion, effectively inhibiting gas reignition, and enhancing the fire protection effect.

[0008] In some embodiments, the cover further includes: a drive member disposed on the relay body and located inside the cover; a first gear and a second gear meshing with each other, the first gear being connected to the drive member so that the drive member drives the first gear to rotate, and the second gear being connected to the second cover so that the second gear drives the second cover to rotate.

[0009] In some embodiments, both the first cover and the second cover are arc-shaped in a projection plane orthogonal to the width direction of the first cover, and the central angle of the first cover and the central angle of the second cover are both not less than 180°. In the second state, the opening of the second cover is located inside the first cover.

[0010] In some embodiments, the gas relay further includes a detection component disposed within the enclosure, the detection component being used to detect the gas concentration within the enclosure, such that when the gas concentration within the enclosure is higher than a set value, the gas relay is in a second state.

[0011] In some embodiments, the fire extinguishing assembly includes: an inflation component; a storage box disposed within the enclosure and adjacent to the relay body, the storage box having a discharge port on the side facing the relay body, the storage box storing fire extinguishing medium and communicating with the inflation component, the inflation component inflating the storage box to drive the fire extinguishing medium in the storage box to be sprayed onto the surface of the relay body through the discharge port.

[0012] In some embodiments, there are multiple discharge ports, which are spaced apart along the length of the storage box.

[0013] In some embodiments, the gas relay further includes a connecting rod, a sealing element, and an elastic element. The connecting rod is disposed within the storage box, and one end of the connecting rod is connected to the sealing element. The sealing element passes through the discharge port and is movable relative to the discharge port between a third position and a fourth position. In the third position, the outer peripheral surface of the sealing element abuts against the inner peripheral surface of the discharge port so that the sealing element blocks the discharge port. In the fourth position, the sealing element is separated from the discharge port. The elastic element is disposed within the storage box and sleeved on the connecting rod. Both ends of the elastic element are connected to the connecting rod and the storage box, respectively. The elastic element has an elastic force that drives the connecting rod to move toward the fourth position.

[0014] In some embodiments, the inflation component includes: a mounting bracket disposed within the housing; a tube and a piston, the tube being disposed on the mounting bracket and communicating with the storage box, one end of the piston passing through the tube and movable relative to the tube along the length of the tube to inflate the storage box.

[0015] In some embodiments, the inflatable component further includes a rotating shaft, which is mounted on the mounting bracket and rotatable about the axial direction of the rotating shaft relative to the mounting bracket. The outer circumferential surface of the rotating shaft is provided with a helical groove, and the free end of the piston is provided with a slider, which passes through the groove. The rotating shaft rotates to drive the piston to move within the tube.

[0016] In some embodiments, the first cover is provided with a first limiting portion, and the second cover is provided with a second limiting portion. In the first position, the first limiting portion and the second limiting portion are separated so that the first cover and the second cover can move relative to each other. In the second position, the first limiting portion and the second limiting portion cooperate so that the positions of the first cover and the second cover are locked. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a gas relay according to an embodiment of the present invention.

[0018] Figure 2 This is a cross-sectional view of a gas relay according to an embodiment of the present invention.

[0019] Figure 3 This is a cross-sectional view of the gas relay removing the storage box according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the housing structure of the gas relay according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the fire extinguishing component of the gas relay according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the inflation component of the gas relay according to an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the storage box of the gas relay according to an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the structure of the second limiting part of the gas relay according to an embodiment of the present invention.

[0025] 100. Gas relay;

[0026] 1. Relay body; 2. Cover body; 21. First cover; 22. Second cover; 23. Drive component; 24. First gear; 25. Second gear; 26. First limiting part; 27. Second limiting part; 271. Limiting rod; 272. Contact head; 273. Fixed shell; 274. Spring; 28. Fixed rod; 3. Fire extinguishing assembly; 31. Inflatable component; 311. Mounting bracket; 312. Tube body; 313. Piston; 314. Rotating shaft; 315. Slide groove; 316. Sliding block; 32. Storage box; 321. Discharge port; 33. Connecting rod; 34. Sealing component; 35. Elastic component; 36. Branch pipe. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] The gas relay 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0029] like Figures 1-8 As shown, the gas relay 100 according to an embodiment of the present invention includes a relay body 1, a housing 2, and a fire extinguishing component 3.

[0030] The cover 2 includes a first cover 21 and a second cover 22. The first cover 21 is disposed on the relay body 1, and the second cover 22 is disposed on the first cover 21 and is positioned relative to the first cover 21 along the width direction of the first cover 21 (e.g., ...). Figure 1 (As shown in the front-to-back direction) is rotatable. In the first position, the second cover 22 is housed inside the first cover 21 and located above the relay body 1, with the first cover 21 and the second cover 22 protecting the relay body 1. In the second position, the second cover 22 rotates to below the relay body 1, and the first cover 21 and the second cover 22 cooperate to seal the relay body. Specifically, as... Figures 1-3 As shown, the relay body 1 is a gas relay. The first cover 21 is installed on the upper end of the relay body 1, so that the first cover 21 protects the upper and side parts of the relay body 1. The second cover 22 is installed inside the first cover 21 and rotates in the left and right direction inside the first cover 21.

[0031] When the gas relay 100 is working normally, the second cover 22 is in the first position, housed inside the first cover 21. The entire cover 2 is positioned above the relay body 1. At this time, the first cover 21 and the second cover 22 together protect the relay body 1, preventing the intrusion of external dust, moisture, and other impurities. When a gas leak occurs, the second cover 22 rotates to the second position, rotating around the first cover 21 to below the relay body 1. The second cover 22 covers the lower end of the relay body 1. At this time, the first cover 21 and the second cover 22 completely enclose the relay body 1, achieving full enclosure and quickly preventing safety hazards caused by gas leaks.

[0032] The fire extinguishing assembly 3 is housed inside the enclosure 2. The gas relay 100 has a first state and a second state. When the relay body 1 is working normally, the gas relay 100 is in the first state, and the second enclosure 22 is housed inside the first enclosure 21 and located above the relay body. The first enclosure 21 and the second enclosure 22 protect the relay body 1. When the relay body 1 leaks, the gas relay 100 is in the second state, and the second enclosure 22 rotates to the bottom of the relay body. The first enclosure 21 and the second enclosure 22 cooperate to seal the relay body. The fire extinguishing assembly 3 sprays extinguishing medium onto the relay body 1 so that the extinguishing medium covers the outer circumferential surface of the relay body 1 and the inner circumferential surface of the enclosure 2. Specifically, as shown... Figures 1-3 As shown, the fire extinguishing component 3 is installed inside the cover 2 and fixedly mounted on the relay body 1. When the relay body 1 is running normally, the gas relay 100 is in the first state. The second cover 22 is housed inside the first cover 21 and located above the relay body 1. The first cover 21 and the second cover 22 work together to form a protective structure to protect the relay body 1. At this time, the bottom of the relay body 1 is not sealed to ensure its normal heat dissipation needs.

[0033] When a gas leak occurs in the relay body 1, the gas relay 100 switches to the second state, and the second cover 22 rotates to the bottom of the relay body 1. The first cover 21 and the second cover 22 then enclose the relay body 1 from top to bottom, achieving complete sealing of the relay body 1. The fire extinguishing component 3 is activated simultaneously, spraying fire extinguishing powder onto the relay body 1. The fire extinguishing powder covers the outer circumference of the relay body 1 and the inner circumference of the cover 2. The flame-retardant properties of the powder suppress the risk of combustion caused by the gas leak, quickly block the propagation conditions of gas combustion, and effectively eliminate safety hazards.

[0034] The gas relay 100 of this embodiment of the invention includes a housing 2 and a fire extinguishing component 3. When a gas leak is detected, the second housing 22 rotates to a second position, forming a fully enclosed space with the first housing 21. This isolates the leaking gas from external open flames, preventing the risk of combustion and explosion at the source and providing reliable fire protection for the safe operation of the gas relay 100. Simultaneously, as the first housing 21 and the second housing 22 close to form the enclosed space, the fire extinguishing component 3 activates, spraying a fire extinguishing medium onto the relay body 1. The fire extinguishing medium covers the outer circumference of the relay body 1 and the inner circumference of the housing 2, quickly eliminating the combustion-supporting conditions required for combustion, effectively inhibiting gas reignition, and improving the fire protection effect.

[0035] In some embodiments, the cover 2 further includes a drive member 23, a first gear 24 meshing with a second gear 25.

[0036] The driving component 23 is mounted on the relay body 1 and located inside the housing 2. Specifically, as shown... Figures 2-4As shown, the drive unit 23 can be a dual-head motor and can be fixed to the relay body 1 by the mounting bracket 311.

[0037] The first gear 24 is connected to the driving member 23 so that the driving member 23 drives the first gear 24 to rotate. The second gear 25 is connected to the second cover 22 so that the second gear 25 drives the second cover 22 to rotate. Specifically, as follows... Figures 2-4 As shown, the first gear 24 is connected to one output shaft of the dual-head motor. The driving component 23 can drive the first gear 24 to rotate around its own axis. The second gear 25 is fixedly mounted on the inner circumferential surface of the second cover 22 body 2, and the second gear 25 meshes with the first gear 24. Thus, the power output by the driving component 23 is transmitted to the second cover 22 through the meshing of the first gear 24 and the second gear 25, causing the second cover 22 to reciprocate between the first position and the second position, thereby realizing the switching between the first state and the second state of the gas relay 100.

[0038] In some embodiments, in the width direction orthogonal to the first cover 21 (e.g. Figure 1 In the projection plane (shown in the left-right direction), both the first cover 21 and the second cover 22 are arc-shaped, and the central angles of both the first cover 21 and the second cover 22 are not less than 180°. In the second state, the opening of the second cover 22 is located inside the first cover 21. Specifically, as shown... Figures 1-3 As shown, in the projection plane perpendicular to the left and right direction, the central angles of the first cover 21 and the second cover 22 are both greater than 180°. When the second cover 22 is rotated to the second position, its upper end is embedded in the lower end of the first cover 21, so that the opening end of the second cover 22 is completely contained in the internal cavity of the first cover 21, and the inner circumferential surface of the lower end of the second cover 22 is tightly fitted with the outer circumferential surface of the upper end of the second cover 22.

[0039] At this time, the first cover 21 and the second cover 22 together form a fully enclosed cavity. The first cover 21 covers the upper and side parts of the relay body 1, and the second cover 22 blocks the lower part of the relay body 1, completely blocking the gas leakage channel. At the same time, it provides a sealed space for the fire extinguishing powder sprayed by the fire extinguishing component 3, ensuring that the fire extinguishing powder evenly covers the outer circumference of the relay body 1 and the inner circumference of the cover 2, giving full play to the flame-retardant and flame-suppressing protective effect.

[0040] In some embodiments, the gas relay 100 further includes a detection component disposed within the housing 2. The detection component is used to detect the gas concentration within the housing 2, so that when the gas concentration within the housing 2 is higher than a preset value, the gas relay 100 is in a second state. Specifically, the detection component is a gas concentration sensor, which is fixedly mounted on the relay body 1 and located within the internal cavity of the first housing 21. This sensor can detect the gas concentration in the area surrounding the relay body 1. When the gas concentration is higher than a preset value, the gas relay 100 changes from the first state to the second state.

[0041] In some embodiments, the fire extinguishing component 3 includes an inflation component 31 and a storage box 32.

[0042] The storage box 32 is located inside the housing 2 and adjacent to the relay body 1. The storage box 32 has a discharge port 321 on the side facing the relay body 1. The storage box 32 stores extinguishing media and is connected to an inflation component 31. The inflation component 31 inflates the storage box 32 to drive the extinguishing media inside the storage box 32 to be sprayed onto the surface of the relay body 1 through the discharge port 321. Specifically, as shown... Figure 2 , Figure 5 and Figure 7 As shown, the storage box 32 is fixed to the relay body 1 by the mounting bracket 311. The lower end face of the storage box 32 is provided with a discharge port 321. The upper end face of the storage box 32 is connected to the inflation component 31, so that the storage box 32 is inflated by the inflation component 31, and the gas carries the fire extinguishing medium through the discharge port 321 and sprays it onto the surface of the relay body 1.

[0043] In some embodiments, the gas relay 100 further includes a connecting rod 33, a sealing member 34, and an elastic member 35. The connecting rod 33 is disposed within the storage box 32, and one end of the connecting rod 33 is connected to the sealing member 34. The sealing member 34 passes through the discharge port 321 and is movable relative to the discharge port 321 between a third position and a fourth position. In the third position, the outer peripheral surface of the sealing member 34 abuts against the inner peripheral surface of the discharge port 321 so that the sealing member 34 blocks the discharge port 321. In the fourth position, the sealing member 34 is separated from the discharge port 321. The elastic member 35 is disposed within the storage box 32 and sleeved on the connecting rod 33. Both ends of the elastic member 35 are connected to the connecting rod 33 and the storage box 32, respectively. The elastic member 35 has an elastic force that drives the connecting rod 33 to move toward the fourth position. Specifically, as shown... Figure 2 , Figure 5 and Figure 7As shown, the connecting rod 33 is a rod-shaped structure extending in the vertical direction. The inner circumferential surface of the discharge port 321 is a tapered shape that gradually expands from top to bottom. The outer circumferential surface of the sealing member 34 is also matched and set as a tapered shape that gradually expands from top to bottom. The two fit together to improve the sealing effect. The sealing member 34 is fixed to the lower end face of the connecting rod 33 and is located at the discharge port 321. The elastic member 35 is a tension spring and is sleeved on the connecting rod 33. The upper and lower ends of the elastic member 35 are fixedly connected to the upper end face of the storage box 32 and the connecting rod 33, respectively. When the gas relay 100 is in the first state, the sealing member 34 is in the third position, and the elastic member 35 keeps the sealing member 34 sealing the discharge port 321 through the elastic tension. When the gas relay 100 switches to the second state, the inflation member 31 inflates the storage box 32 with gas. The gas pressure drives the sealing member 34 to move downward against the elastic tension of the elastic member 35, so that the sealing member 34 separates from the discharge port 321. The fire extinguishing medium in the storage box 32 is sprayed onto the surface of the relay body 1 through the discharge port 321.

[0044] In some embodiments, there are multiple discharge ports 321, and the multiple discharge ports 321 are spaced apart along the length direction of the storage box 32. Specifically, as shown in the figure Figure 7 As shown, in the projection plane orthogonal to the left and right directions, the projection of the storage box 32 is an arc shape, and there can be two storage boxes. The two storage boxes are arranged opposite each other on the relay body 1 at intervals along the front and back directions. The lower end face of each storage box is provided with multiple discharge ports 321. The multiple discharge ports 321 are arranged at intervals along the length direction of the storage box. The number of connecting rods 33, sealing members 34 and elastic members 35 are all multiple and equal to the number of discharge ports 321, thereby sealing the discharge ports 321.

[0045] In some embodiments, the inflation component 31 includes a mounting bracket 311, a tube 312, and a piston 313.

[0046] The mounting bracket 311 is located inside the cover 2, the tube 312 is mounted on the mounting bracket 311 and communicates with the storage box 32, one end of the piston 313 passes through the tube 312 and is movable relative to the tube 312 along the length of the tube 312, so as to inflate the storage box 32. Specifically, as Figure 2 and Figure 6 As shown, the mounting bracket 311 is fixed on the relay body 1 and located inside the cover 2. The tube 312 extends in the front-to-back direction and is connected to the storage box 32. The piston 313 passes through the tube 312. The cooperation between the piston 313 and the tube 312 generates gas pressure, which completes the inflation action of the storage box 32 and provides a power source for the spraying of the extinguishing medium.

[0047] In some embodiments, the right end of the pipe 312 is provided with a first port and a second port. The first port is connected to the external atmosphere and is equipped with a first one-way valve, allowing external gas to flow into the pipe 312 through the first one-way valve. The second port is connected to the storage box 32 and is equipped with a second one-way valve, allowing gas in the pipe 312 to flow into the storage box 32 through the second one-way valve. Thus, the conduction direction of the first and second one-way valves is adapted to the reciprocating motion direction of the piston 313: when the piston 313 moves to the left, the first one-way valve opens and the second one-way valve closes, allowing external gas to replenish the pipe 312; when the piston 313 moves to the right, the first one-way valve closes and the second one-way valve opens, forcing gas in the pipe 312 into the storage box 32. Through the reciprocating motion of the piston 313 and the cooperation of the two one-way valves, a continuous gas circulation of external gas replenishment and gas filling into the storage box 32 is achieved, providing a stable and continuous power source for the spraying of the extinguishing medium.

[0048] In some embodiments, the inflatable component 31 further includes a rotating shaft 314, which is mounted on the mounting bracket 311 and rotatable about its axial direction relative to the mounting bracket 311. The outer circumferential surface of the rotating shaft 314 is provided with a helical groove 315, and the free end of the piston 313 is provided with a slider 316, which passes through the groove 315. The rotating shaft 314 rotates to drive the piston 313 to move within the tube 312. Specifically, as shown... Figure 6 As shown, one end of the rotating shaft 314 is coaxially and fixedly connected to the other output shaft of the dual-head motor, which provides rotational power. A sliding groove 315 is formed on the outer circumferential surface of the rotating shaft 314. The groove 315 includes a first section and a second section that are connected. The first section extends from left to right and slopes upwards, and the second section extends from left to right and slopes upwards. A slider 316 is slidably fitted into the spiral groove 315. When the dual-head motor drives the rotating shaft 314 to rotate, the groove 315, through its cooperation with the slider 316, converts the rotational motion into the linear reciprocating motion of the piston 313, thereby alternately completing the external air replenishment of the tube 312 and the high-pressure air filling of the storage box 32, providing stable power for the spraying of the extinguishing medium.

[0049] In some embodiments, the first cover 21 is provided with a first limiting portion 26, and the second cover 22 is provided with a second limiting portion 27. In a first position, the first limiting portion 26 and the second limiting portion 27 are separated so that the first cover 21 and the second cover 22 can move relative to each other. In a second position, the first limiting portion 26 and the second limiting portion 27 are engaged so that the positions of the first cover 21 and the second cover 22 are locked. Specifically, as shown... Figure 4 and Figure 8As shown, the first limiting part 26 is provided at the lower end of the first cover 21, and the second limiting part 27 is a limiting fit structure adapted to the first limiting part 26, preferably a combination of a limiting hole and a contact head 272: the first limiting part 26 is a limiting hole opened at the lower end of the first cover 21, and the second limiting part 27 is a contact head 272 fixed on the second cover 22.

[0050] In the first position, the contact head 272 is separated from the limiting hole and there is no insertion constraint. The first cover 21 and the second cover 22 can rotate relative to each other. In the second position, the contact head 272 is inserted into and locked in the limiting hole. The two form a limiting fit to achieve circumferential position locking of the first cover 21 and the second cover 22, ensuring that there is no relative displacement after the cover 2 is closed, and ensuring the sealing of the internal cavity.

[0051] The following is for reference. Figures 1-8 The present invention specifically describes a transformer gas relay 100, which achieves the effect of automatically sealing the gas relay 100 when it is damaged or when the gas used for detection leaks. It includes a relay body 1, with rubber rings fixedly connected to both ends of the relay body 1. A first cover 21 is fixedly connected to the outside of the rubber rings. A second cover 22 is rotatably connected to both ends of the gas relay 100 and rotatably connected to the inside of the first cover 21. A transmission assembly is provided inside the second cover 22. The transmission assembly includes a double-headed motor. A detection assembly and a controller are fixedly connected to the front of the relay body 1.

[0052] The transformer gas relay 100 also includes a fire extinguishing component 3. The fire extinguishing component 3 includes a rotating shaft 314 fixedly connected to the right output end of the dual-head motor. A groove 315 is provided on the surface of the rotating shaft 314. A slider 316 is slidably connected inside the groove 315. An inflation component 31 is provided on the top of the gas relay 100. A storage box 32 is fixedly connected to the top of the gas relay 100. A connecting rod 33 is provided inside the storage box 32. A sealing component 34 that abuts against the outlet of the storage box 32 is slidably connected to the outside of the connecting rod 33.

[0053] The rubber rings provide rain protection for the gas relay 100 and also seal it in case of gas leakage, preventing it from igniting and exploding upon contact with an open flame. Inside the first cover 21, at the installation location where the gas relay 100 is mounted, the rubber rings connect and install the cover 2, providing shock absorption. When the detection component detects a gas leak, the controller automatically starts the dual-head motor. The left drive shaft of the dual-head motor drives the first gear 24 to rotate, causing the first gear 24 to... The second gear 25 rotates, thereby causing the second cover 22 inside the first cover 21 to rotate. The second cover 22 rotates clockwise, meaning that the front end of the second cover 22 rotates downwards and gradually moves backwards until it rotates 180 degrees. Since the cross-sectional area of ​​the second cover 22 is larger than that of the first cover 21, when the second cover 22 rotates 90 degrees, it will block the bottom of the first cover 21. Through the coordinated combination of the first cover 21 and the second cover 22, a spatial seal is achieved, thereby preventing gas leakage and preventing gas from coming into contact with open flames.

[0054] To further prevent combustion and explosion, the fire extinguishing component 3 enhances the fire prevention effect. When the second cover 22 rotates, the other output end of the dual-head motor drives the rotating shaft 314 to rotate, which in turn causes the slide 315 to rotate. Since the slider 316 is embedded inside the slide 315, the rotation of the slide 315 causes the slider 316 to move back and forth, which in turn drives the piston 313 to move back and forth. This causes the piston 313 to move repeatedly inside the tube 312, allowing the gas to pass through the bifurcation tube 36 and be compressed and transported to the inside of the storage box 32. Through the action of air pressure, the opening of the storage box 32 automatically opens, allowing the fire extinguishing powder to be sprayed onto the outside of the gas relay 100. As the piston 313 moves back and forth, the storage box 32 continuously sprays powder along with the rotation of the second cover 22, thus covering the surface of the gas relay 100 with powder and reducing the conditions for combustion inside the first cover 21 and the second cover 22.

[0055] When the second cover 22 rotates, in order to prevent the second cover 22 from rotating too far, the first limiting part 26 and the second limiting part 27 are provided to position and limit the rotation of the second cover 22. When the second cover 22 rotates, the limiting hole is sent from the front to the rear. Then, by the elastic force of the spring 274, the contact head 272 is locked into the inside of the limiting hole, thereby limiting the rotation of the second cover 22 and stopping the second cover 22 from moving.

[0056] The transmission assembly also includes a fixing rod 28 fixedly connected to the protrusion inside the second cover 22, a second gear 25 fixedly connected to the outside of the fixing rod 28, the bottom of the dual-head motor fixedly connected to the top of the gas relay 100, and a first gear 24 meshing with the second gear 25 fixedly connected to the left side of the left drive shaft of the dual-head motor.

[0057] When the dual-head motor drives the first gear 24 to rotate, it will cause the second gear 25 to rotate. The second cover 22, connected by the fixed rod 28, will rotate along with the rotation of the second gear 25, thereby enabling the second cover 22 to flip and achieve a combined seal with the first cover 21.

[0058] The second cover 22 consists of a baffle that fits against the inner wall of the first cover 21 and a rotating ring. The width of the rotating ring is greater than the wall thickness of the second cover 22 and extends inward. The inner end of the fixing rod 28 is connected to the rotating ring and is evenly distributed on the outside of the rotating ring. The first cover 21 consists of a semi-circular cover and a fixing ring. The width of the fixing ring corresponds to the width of the rubber ring, and the cross-sectional angle of the semi-circular cover is smaller than the cross-sectional angle of the baffle.

[0059] The inwardly extending portion of the rotating ring of the second cover 22 is used to connect with the fixed rod 28. At the same time, the entire rotating ring and the pipe positions extending from both ends of the gas relay 100 rotate relative to each other, thus enabling the second cover 22 to rotate. The fixed ring of the first cover 21 is used to connect with the rubber ring, thereby achieving the shockproof function in rainproof mode. Since the cross-sectional angle of the first cover 21 is smaller than that of the second cover 22, after the second cover 22 rotates, part of its structure is still embedded inside the first cover 21. This ensures that there will be no leakage gaps after the first cover 21 and the second cover 22 are combined and sealed.

[0060] When the gas relay 100 is in normal use, the first cover 21 on top of the gas relay 100 will shield the gas relay 100, thereby achieving the function of rain protection, and the rubber ring between the gas relay 100 and the first cover 21 can reduce the impact of vibration.

[0061] When a gas relay 100 malfunctions, causing a gas leak during detection, the detection component detects the gas and transmits a signal to the controller. The controller then controls the dual-head motor drive. The left output of the dual-head motor drives the first gear 24 to rotate, which in turn drives the second gear 25 to rotate. Through the connection of the fixing rod 28, the second cover 22 rotates. As the second cover 22 rotates counterclockwise, it gradually seals the bottom of the first cover 21, isolating the gas from the external environment and preventing it from coming into contact with an open flame and causing combustion or explosion.

[0062] To further improve the effect of preventing gas combustion and explosion, the fire extinguishing assembly 3 includes an inflation component 31, a piston 313 fixedly connected to the bottom of the slider 316, a mounting bracket 311 fixedly connected to the top of the gas relay 100 and slidably connected to the outside of the piston 313, a tube 312 fixedly connected to the top of the gas relay 100 and slidably connected to the outside of the piston 313, a branch pipe 36 fixedly connected to the top interface of the tube 312, and the end of the branch pipe 36 away from the tube 312 fixedly connected to the inside of the storage box 32. The fire extinguishing assembly 3 also includes an elastic element 35 sleeved on the outside of the connecting rod 33, and the elastic element 35 is disposed between the outside of the sealing component 34 and the inner wall of the storage box 32.

[0063] The top end of the tube 312 is connected to the branch tube 36. The gas pushed out from the inside of the tube 312 will enter the inside of the storage box 32. Due to the air pressure, the sealing member 34 will move, thereby realizing the powder spraying. At the same time, after the powder is discharged, since there is powder inside the storage box 32, the reset process of the sealing member 34 is delayed and slow. Therefore, the piston 313 can be automatically pulled back and reset, and will not be unable to be pulled out due to the air pressure.

[0064] The piston 313 consists of a sealing piston head 313 and a push-pull rod. The sealing piston head 313 is located inside the tube body 312 and slides back and forth against the inner wall of the tube body 312. The left end of the push-pull rod is connected to the right end of the piston 313 and reciprocates inside the tube body 312. The slide groove 315 gradually slopes downward from right to left, and the highest and lowest points of the slide groove 315 are interconnected. The width of the slide groove 315 corresponds to the slider 316. The slider 316 is embedded inside the slide groove 315. The storage box 32 consists of a support rod, a hollow shell, and a nozzle. The nozzle is located inside the hollow shell, and the spray direction is towards the front and rear sides of the gas relay 100. The sealing member 34 adopts a conical structure, and the conical protrusion is embedded inside the nozzle.

[0065] Through the cooperation of the groove 315 and the slider 316, the push-pull rod moves back and forth as the piston 313 moves left and right, thereby enabling the sealing piston 313 head to move back and forth, so that the powder inside the storage box 32 can be continuously sprayed out. When the rotating shaft 314 rotates, it will drive the groove 315 to change position, while the height of the slider 316 remains unchanged. Therefore, the slider 316 will slide back and forth between the left and right ends of the groove 315, thereby enabling the piston 313 to move back and forth. Since the sealing part 34 adopts a conical structure, it will be embedded inside the nozzle of the storage box 32 to prevent powder leakage under normal conditions.

[0066] In use, when the left side of the dual-head motor output terminal rotates, the right side output terminal drives the rotating shaft 314 to rotate, causing the slide 315 to rotate. The rotating slide 315 drives the slider 316 to move, causing the slider 316 to slide back and forth. The movement of the slider 316 drives the piston 313 to move left and right, allowing the piston 313 to move back and forth inside the tube 312. When the piston 313 moves to the right, the air pressure will push the gas through the bifurcation pipe 36 into the storage box 32. The sealing element 34 is removed from the inside of the nozzle of the storage box 32, allowing the extinguishing powder to be sprayed out from the nozzle and cover the surface of the gas relay 100 and the inside of the first cover 21 and the second cover 22. Due to the action of the powder, the stretched elastic element 35 will be delayed in resetting, allowing the piston 313 to return to its initial position. Then, the reciprocating movement of the piston 313 will spray out the powder again. Since the powder covers the inside of the first cover 21 and the second cover 22, the conditions required for open flame combustion will be reduced, making the protective effect more obvious.

[0067] To address the issue that excessive rotation of the second cover 22 could affect sealing, the gas relay 100 further includes a first limiting part 26 and a second limiting part 27. The second limiting part 27 includes a limiting rod 271, a contact head 272, a fixed shell 273, and a spring 274. The fixed shell can be fixed inside the second cover 22. The outer side of the limiting rod 271 is fixedly connected to the inner wall of the fixed shell 273. The contact head 272 passes through the limiting rod 271 and can pass through the second cover 22 and pass through the first limiting part 26. A spring 274 is provided between the contact head 272 and the inner wall of the fixed shell 273. The spring 274 passes through the limiting rod 271 and is connected to both the contact head 272 and the fixed shell 273.

[0068] In its initial state, the contact head 272 is in contact with the surface of the first cover 21. After the second cover 22 rotates counterclockwise, the contact head 272 will be sent into the position of the limiting hole. The spring 274 releases the elastic force, which allows the contact head 272 to enter the interior of the limiting hole. Then, after the second cover 22 rotates 180 degrees, it will be positioned and stopped.

[0069] In summary, the gas relay 100 of this invention has the following advantages: 1. By using the gas sensor to monitor the gas relay 100, when a gas leak is detected, the rotating cover 2 can be automatically controlled to rotate, so that the first cover 21 and the second cover 22 form a closed space to prevent combustion and explosion when exposed to open flame, thus providing fire protection for the operation of the gas relay 100.

[0070] 2. By using the fire extinguishing component 3, the slide 315 drives the slider 316 to move back and forth, which enables the nozzle of the storage box 32 to spray powder back and forth when the rotating cover 2 rotates and closes, thereby reducing the conditions required for combustion and improving the fire protection effect.

[0071] 3. By using the first limiting part 26 and the second limiting part 27, and the elastic force applied to the contact head 272 by the second spring 274, the contact head 272 can automatically engage with the positioning hole when the rotating cover 2 rotates to the equilibrium position, thereby preventing the sealing from being incomplete due to excessive rotation of the rotating cover 2.

[0072] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0073] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0075] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0076] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0077] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A gas relay, characterized in that, include: Relay body; The cover includes a first cover and a second cover. The first cover is disposed on the relay body, and the second cover is disposed on the first cover and is rotatable relative to the first cover along the width direction of the first cover. In the first position, the second cover is housed inside the first cover and located above the relay body. The first cover and the second cover protect the relay body. In the second position, the second cover rotates to be below the relay body, and the first cover and the second cover cooperate to close the relay body. A fire extinguishing assembly is disposed within the enclosure. The gas relay has a first state and a second state. When the relay body is operating normally, the gas relay is in the first state. The second enclosure is housed within the first enclosure and located above the relay body. The first and second enclosures protect the relay body. When the relay body leaks, the gas relay is in the second state. The second enclosure rotates to below the relay body. The first and second enclosures cooperate to seal the relay body. The fire extinguishing assembly sprays a fire extinguishing medium onto the relay body so that the fire extinguishing medium covers the outer peripheral surface of the relay body and the inner peripheral surface of the enclosure.

2. The gas relay according to claim 1, characterized in that, The cover also includes: A driving element, which is disposed on the relay body and located within the housing; A first gear and a second gear mesh with each other. The first gear is connected to the driving member so that the driving member drives the first gear to rotate. The second gear is connected to the second cover so that the second gear drives the second cover to rotate.

3. The gas relay according to claim 1, characterized in that, In a projection plane orthogonal to the width direction of the first cover, both the first cover and the second cover are arc-shaped, and the central angle of the first cover and the central angle of the second cover are both not less than 180°. In the second state, the opening of the second cover is located inside the first cover.

4. The gas relay according to claim 1, characterized in that, It also includes a detection component disposed inside the enclosure, the detection component being used to detect the gas concentration inside the enclosure, so that when the gas concentration inside the enclosure is higher than a set value, the gas relay is in a second state.

5. The gas relay according to claim 1, characterized in that, The fire extinguishing assembly includes: Inflatable components; A storage box is disposed inside the cover and adjacent to the relay body. The storage box has a discharge port on the side facing the relay body. The storage box stores fire extinguishing medium and is connected to the inflation component. The inflation component inflates the storage box to drive the fire extinguishing medium in the storage box to be sprayed onto the surface of the relay body through the discharge port.

6. The gas relay according to claim 5, characterized in that, There are multiple discharge ports, which are spaced apart along the length of the storage box.

7. The gas relay according to claim 5, characterized in that, It also includes a connecting rod, a sealing element, and an elastic element. The connecting rod is disposed inside the storage box, and one end of the connecting rod is connected to the sealing element. The sealing element passes through the discharge port and is movable relative to the discharge port between a third position and a fourth position. In the third position, the outer peripheral surface of the sealing element abuts against the inner peripheral surface of the discharge port so that the sealing element blocks the discharge port. In the fourth position, the sealing element is separated from the discharge port. The elastic element is disposed inside the storage box and sleeved on the connecting rod. The two ends of the elastic element are respectively connected to the connecting rod and the storage box. The elastic element has an elastic force that drives the connecting rod to move toward the fourth position.

8. The gas relay according to claim 5, characterized in that, The inflatable component includes: Mounting bracket, which is installed inside the cover; The tube body is mounted on the mounting bracket and communicates with the storage box. One end of the piston passes through the tube body and is movable relative to the tube body along the length of the tube body to inflate the storage box.

9. The gas relay according to claim 8, characterized in that, The inflatable component also includes a rotating shaft, which is mounted on the mounting bracket and is rotatable about the axis of the rotating shaft relative to the mounting bracket. The outer circumferential surface of the rotating shaft is provided with a sliding groove, and the free end of the piston is provided with a slider, which passes through the sliding groove. The rotating shaft rotates to drive the piston to move within the tube.

10. The gas relay according to claim 1, characterized in that, The first cover is provided with a first limiting part, and the second cover is provided with a second limiting part. In the first position, the first limiting part and the second limiting part are separated so that the first cover and the second cover can move relative to each other. In the second position, the first limiting part and the second limiting part are engaged so that the positions of the first cover and the second cover are locked.

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