Fluid shut-off device pressure relief structure

Abstract

The utility model provides a kind of fluid shutoff device pressure relief structure, it includes: a valve body, a shutoff device, the shutoff device is installed between the shutoff hole and the inflow end, and the shutoff device moves and blocks the shutoff hole to move and block the communication of the inflow end and the outflow end;A pressure relief group, the pressure relief group is installed in the pressure relief hole, and the pressure relief group moves and blocks the orifice of the shutoff hole connected with the shutoff hole, when the flow passage is in normal pressure state, the pressure relief group normally blocks the pressure relief hole;When the flow passage of the valve body is in overpressure state, the pressure relief group is pushed by pressure and removes the blockage to the pressure relief hole, so that the pressure in the flow passage is discharged by the pressure relief hole.

Description

Technical Field

[0001] This utility model relates to the technical field of overflow valves, and in particular to a pressure relief structure for a fluid shut-off device. Background Technology

[0002] With the advancement of technology, modern houses no longer use bottled gas as an energy container, but are gradually replacing it with natural gas pipelines. Natural gas pipelines are generally buried in buildings, and people do not usually come into contact with them. When abnormalities occur in the pipelines, they are not easy to detect. Therefore, the self-regulation of pipelines and emergency response measures are particularly important.

[0003] To achieve automatic regulation, pipelines are typically equipped with regulating valves to control fluid pressure or flow, maintaining system pressure within a certain range. An overflow valve is then added to handle emergencies. In existing applications, when a pipeline ruptures while the regulating valve is functioning normally, the pressure differential caused by fluid leakage triggers a shut-off component inside the overflow valve to block the flow orifice, thus preventing further fluid leakage and avoiding explosion risks, health hazards, and fire potential.

[0004] However, if the regulating valve malfunctions but the pipeline is not broken, there is no pressure difference inside the pipeline. At this time, the pipeline is in a normal state, and the shut-off component inside the overflow valve will not block the flow hole due to pressure changes. As fluid continues to be input, if there is an abnormality at the source or supply end, the pipeline pressure will gradually increase, which may eventually lead to overpressure. Excessive pressure may suddenly flow into the gas stove or water heater in the home, thereby causing equipment damage or malfunction. Utility Model Content

[0005] The main purpose of this utility model is to provide a fluid shut-off device pressure relief structure, which uses a pressure relief valve to take emergency response measures when the pipeline pressure gradually increases, so as to prevent excessive pressure from suddenly entering the gas stove or water heater in the home and causing equipment damage or failure; it improves the lack of effective pressure relief mentioned in the prior art.

[0006] To achieve the aforementioned effects and overcome the shortcomings of existing technologies, this novel fluid shut-off device pressure relief structure includes: a valve body having an inlet end and an outlet end, a flow channel connecting the inlet end and the outlet end respectively, and a portion of the inner wall of the flow channel protruding inward to form a shut-off hole, the shut-off hole being located between the inlet end and the outlet end; and a pressure relief hole extending to the outer surface of the valve body at any position on the inner wall of the flow channel, the shut-off hole and the pressure relief hole being connected to the flow channel; and a shut-off device. A circuit breaker is installed between the shut-off orifice and the inflow end, and the circuit breaker actively blocks the shut-off orifice, thereby actively blocking the connection between the inflow end and the outflow end; a pressure relief assembly is installed in the pressure relief orifice, and the pressure relief assembly actively blocks the orifice connecting the pressure relief orifice to the shut-off orifice. When the flow channel is under normal pressure, the pressure relief assembly normally blocks the pressure relief orifice; when the flow channel of the valve body is under overpressure, the pressure relief assembly is pushed by pressure to release the blockage of the pressure relief orifice, so that the pressure in the flow channel is released through the pressure relief orifice.

[0007] The pressure relief assembly further includes a pressure relief cylinder, which has an air inlet, an air outlet, and a first accommodating space at both ends. The first accommodating space is interconnected with the air inlet and the air outlet. The pressure relief assembly further includes a pressure relief spring and a pressure relief component located in the first accommodating space. One end of the pressure relief spring abuts against the end of the pressure relief cylinder with the air outlet, and the other end of the pressure relief spring abuts against the pressure relief component. The pressure relief component normally blocks the air inlet.

[0008] When the interrupter is located between the interruption hole and the inflow end, the interrupter further includes a fixing member, which has a first locking ring, a second locking ring, and a plurality of locking ribs. The first locking ring is installed at the opening of the interruption hole. The two ends of each locking rib are respectively connected to the first locking ring and the second locking ring, and the locking ribs are spaced apart. A second receiving space is formed between the first locking ring, the second locking ring, and each locking rib. The interrupter further includes an interruption head, an interruption handle, and a positioning ring. The interruption head is located in the second receiving space. One end of the interruption handle passes through the second receiving space and is connected to the interruption head. The other end of the interruption handle has the positioning ring, and the interruption handle also has a first spring. The two ends of the first spring abut against the fixing member and the positioning ring, respectively. Partial movement of the interruption head blocks the first locking ring and blocks the communication between the inflow end and the outflow end.

[0009] The valve body is further provided with a return assembly and a return hole on the valve body. The return hole is connected to the flow channel, and the return assembly moves into the flow channel. When the blocking head partially blocks the connection between the inlet end and the outlet end, pressing the return assembly towards the blocking head can release the blocking head from blocking the inlet end and the outlet end, so that the inlet end and the outlet end can be connected again.

[0010] The resetting assembly further comprises a cover, a cylinder, a second spring, and a resetting bolt. One end of the cylinder is disposed at the resetting hole, and the other end of the cylinder is located outside the valve body. Part of the resetting bolt is located inside the cylinder, and another part of the resetting bolt protrudes from the cylinder and is fitted with the cover on its end face. The second spring is sleeved on the protruding part of the resetting bolt, and both ends of the second spring abut against the cover and the cylinder. Attached Figure Description

[0011] Figure 1 This is a perspective view of the first embodiment of the present invention.

[0012] Figure 2 This is an exploded perspective view of the first embodiment of the present invention.

[0013] Figure 3A For the present utility model Figure 1 Schematic diagram of the cross section of line IIIA-IIIA.

[0014] Figure 3B This is a schematic diagram of the blocking and pressure relief operation of the first embodiment of this utility model.

[0015] Figure 3C This is a schematic diagram of the reversion operation of the first embodiment of the present invention.

[0016] Figure 4 This is a perspective view of the second embodiment of the present invention.

[0017] Figure 5 This is an exploded perspective view of the second embodiment of the present invention.

[0018] Figure 6A For the present utility model Figure 4 Schematic diagram of the cross section of line segment VIA-VIA.

[0019] Figure 6B This is a schematic diagram of the blocking and pressure relief operation of the second embodiment of this utility model.

[0020] Figure 6C This is a schematic diagram of the reversion operation of the second embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures: Valve body: 1; Flow channels: 11; Inflow end: 12; Outflow end: 13; Blocking holes: 14; Pressure relief vent: 15; Returning hole: 16; Interrupter: 2; Fasteners: 21; First retaining ring: 211; Second retaining ring: 212; 213; Second accommodating space: 214; Head cut-off: 22; Block handle: 23; Positioning ring: 24; First spring: 25; Pressure relief group: 3; Pressure relief cylinder: 31; Air intake port: 311; Vent: 312; First accommodating space: 313; Pressure relief spring: 32; Pressure relief component: 33; Regression group: 4; Cover: 41; Cylinder: 42; Second spring: 43; Reversion thrombus: 44. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention. Please refer to... Figures 1 to 6CAs shown, the present invention discloses a pressure relief structure for a fluid shut-off device, comprising: a valve body 1 having an inlet end 12 and an outlet end 13, a flow channel 11 connecting the inlet end 12 and the outlet end 13 respectively, and a portion of the inner wall of the flow channel 11 protruding inward to form a shut-off hole 14, the shut-off hole 14 being located between the inlet end 12 and the outlet end 13; and a pressure relief hole 15 extending to the outer surface of the valve body 1 at any position on the inner wall of the flow channel 11, the shut-off hole 14 and the pressure relief hole 15 being connected to the flow channel 11; and a shut-off device 2, the shut-off device 2 being installed on the valve body 1. Between the cut-off hole 14 and the inflow end 12, the shut-off device 2 actively blocks the shut-off hole 14, thereby actively blocking the connection between the inflow end 12 and the outflow end 13; a pressure relief group 3 is installed in the pressure relief hole 15, and the pressure relief group 3 actively blocks the opening of the pressure relief hole 15 connecting to the shut-off hole 14. When the flow channel 11 is under normal pressure, the pressure relief group 3 normally blocks the pressure relief hole 15; when the flow channel 11 of the valve body 1 is under overpressure, the pressure relief group 3 is pushed by pressure to release the blockage of the pressure relief hole 15, so that the pressure in the flow channel 11 is released through the pressure relief hole 15.

[0023] Based on the above description, the following further describes other technical and structural features of this utility model. The pressure relief assembly 3 further includes a pressure relief cylinder 31. The two ends of the pressure relief cylinder 31 have an air inlet 311, an air outlet 312, and a first accommodating space 313, respectively. The first accommodating space 313 is interconnected with the air inlet 311 and the air outlet 312. The pressure relief assembly 3 further includes a pressure relief spring 32 and a pressure relief component 33 located within the first accommodating space 313. One end of the pressure relief spring 32 abuts against the end of the pressure relief cylinder 31 with the air outlet 312, and the other end of the pressure relief spring 32 abuts against the pressure relief component 33. The pressure relief component 33 is normally... The pressure relief component 33 normally blocks the pressure relief hole 15 when the pressure in the flow channel 11 of the valve body 1 is less than the elastic force of the pressure relief spring 32 and is in a normal pressure state. When the pressure in the flow channel 11 of the valve body 1 is greater than the elastic force of the pressure relief spring 32 and is in an overpressure state, the pressure relief component 33 is pushed by the pressure in the flow channel 11 to compress the pressure relief spring 32, releasing the blockage of the pressure relief hole 15. At this time, the pressure in the flow channel 11 will flow from the air inlet 311 into the first accommodating space 313 and be discharged from the air outlet 312 into the valve body 1, thus releasing the pressure in the flow channel 11. Figures 1 to 3C As shown.

[0024] In addition, when the pressure in the flow channel 11 of the valve body 1 is greater than the elastic force of the pressure relief spring 32 and is in an overpressure state, the pressure relief component 33 will be pushed by the pressure in the flow channel 11 to compress the pressure relief spring 32 and release the blockage of the pressure relief hole 15. When the valve body 1 is shaken, such as by an earthquake, the pressure relief component 33 will also compress the pressure relief spring 32 due to its own weight, thereby releasing the blockage of the pressure relief hole 15. In this way, when an earthquake occurs and the valve body 1 is shaken, the pressure relief component 33 will quickly release the blockage of the pressure relief hole 15, achieving real-time pressure relief and avoiding concerns about excessive internal pressure in the valve body 1.

[0025] Please refer to the following: Figures 1 to 3C These are, respectively, a perspective view, a perspective exploded view, and a cross-sectional view of the first embodiment of the pressure relief structure of the fluid interruption device of this utility model. When the interrupter 2 is located between the interruption hole 14 and the inflow end 12, the interrupter 2 further includes a fixing member 21. The fixing member 21 further has a first locking ring 211, a second locking ring 212, and a plurality of locking ribs 213. The first locking ring 211 is installed at the opening of the interruption hole 14. The two ends of each locking rib 213 are respectively connected to the first locking ring 211 and the second locking ring 212, and the locking ribs 213 are spaced apart. A second receiving space 214 is formed between the first locking ring 211, the second locking ring 212, and each locking rib 213. The interrupter 2 further includes an interruption head 22, an interruption handle 23, and a positioning ring 24. The interruption head 22 is located in the second receiving space 214, and one end of the interruption handle 23 passes through the second receiving space 214. The space 214 is connected to the shut-off head 22. The other end of the shut-off handle has the positioning ring 24, and the shut-off handle 23 also has a first spring 25. The two ends of the first spring 25 respectively abut against the fixing member 21 and the positioning ring 24. Part of the shut-off head 22 moves to block the first locking ring 211 and block the communication between the inflow end 12 and the outflow end 13. When the pressure relief group 3 releases the pressure in the flow channel 11, a pressure difference is generated inside the valve body 1. The pressure difference causes the fluid in the flow channel 11 to push the shut-off head 22 toward the fixing member 21, and the part of the shut-off head 22 blocks the first locking ring 211, thereby blocking the communication between the inflow end 12 and the outflow end 13, effectively preventing the fluid from continuing to leak out or pour into the flow channel 11. Figures 2 to 3B As shown.

[0026] Additionally, the valve body 1 is provided with a return assembly 4 installed in a return hole 16 of the valve body 1. The return hole 16 is connected to the flow channel 11. The return assembly 4 further includes a cover 41, a cylinder 42, a second spring 43, and a return plug 44. One end of the cylinder 42 is installed in the return hole 16, and the other end of the cylinder 42 is located outside the valve body 1. Part of the return plug 44 is located inside the cylinder 42, and the other part of the return plug 44 protrudes from the cylinder 42 and is fitted with the cover 41 on its end face. The protruding portion is fitted with the second spring 43, the two ends of which abut against the cover 41 and the cylinder 42. The return assembly 4 moves into the flow channel 11. When the blocking head 22 partially blocks the connection between the inflow end 12 and the outflow end 13, the cover 41 of the return assembly 4 is pressed, thereby compressing the second spring 43, which drives the return plug 44 and pushes it towards the blocking head 22. Figure 2 , Figure 3C As shown, the blockage caused by the blocking head 22 is released from the obstruction between the inflow end 12 and the outflow end 13, restoring communication between the inflow end 12 and the outflow end 13. The state after release is as follows. Figure 3A As shown.

[0027] Please refer to the following: Figures 4 to 6C These are, respectively, a perspective view, an exploded perspective view, and a cross-sectional view of the pressure relief, interruption, and recovery operation of the second embodiment of the fluid interruption device pressure relief structure of this utility model. In this embodiment, the components with the same component symbols are configured and operated in the same or similar manner as in the aforementioned embodiments, and the similarities or similarities will not be repeated here.

[0028] The main difference between this embodiment and the previous embodiment is that when the shut-off device 2 is located within the shut-off orifice 14, the shut-off device 2 does not block the connection between the inflow end 12 and the outflow end 13 by partially moving the shut-off head 22 to block the first retaining ring 211. Instead, it blocks the shut-off orifice 14 in a spherical shape, thereby blocking the connection between the inflow end 12 and the outflow end 13. When a pressure difference is generated within the flow channel 11 of the valve body 1, the ball will be pushed by the fluid, thereby blocking the shut-off orifice 14. Figure 6A , Figure 6B As shown; after the pressure difference problem is resolved, pressing the cover 41 of the return assembly 4 compresses the second spring 43, causing the return plug 44 to move towards the ball, thereby releasing the blockage of the ball between the inlet end 12 and the outlet end 13, and restoring communication between the inlet end 12 and the outlet end 13. Figure 6C As shown.

[0029] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model, or reasonable combinations of features and solutions from various embodiments, are all within the protection scope of the present utility model.

Claims

1. A pressure relief structure for a fluid shut-off device, characterized in that, include: A valve body has an inlet end and an outlet end, and a flow channel connecting the inlet end and the outlet end respectively. A portion of the inner wall of the flow channel protrudes inward to form a shut-off hole, which is located between the inlet end and the outlet end. A pressure relief hole is further provided at any position on the inner wall of the flow channel, extending to the outer surface of the valve body. The shut-off hole and the pressure relief hole are connected to the flow channel. A circuit breaker is installed between the circuit breaker orifice and the inflow end, and the circuit breaker is movable to block the circuit breaker orifice, thereby movable to block the connection between the inflow end and the outflow end. A pressure relief assembly is provided at the pressure relief hole, and the pressure relief assembly can actively block the opening of the pressure relief hole connecting to the shut-off hole. When the flow channel is under normal pressure, the pressure relief assembly normally blocks the pressure relief hole; when the flow channel of the valve body is under overpressure, the pressure relief assembly is pushed by pressure to release the blockage of the pressure relief hole, so that the pressure in the flow channel can be released through the pressure relief hole.

2. The pressure relief structure of the fluid shut-off device as described in claim 1, characterized in that, The pressure relief assembly further includes a pressure relief cylinder, which has an air inlet, an air outlet, and a first accommodating space at both ends. The first accommodating space is interconnected with the air inlet and the air outlet. The pressure relief assembly further includes a pressure relief spring and a pressure relief component located in the first accommodating space. One end of the pressure relief spring abuts against the end of the pressure relief cylinder with the air outlet, and the other end of the pressure relief spring abuts against the pressure relief component. The pressure relief component normally blocks the air inlet.

3. The pressure relief structure of the fluid shut-off device as described in claim 1, characterized in that, When the interrupter is located between the interruption hole and the inflow end, the interrupter further includes a fixing member, which further has a first locking ring, a second locking ring, and a plurality of locking ribs. The first locking ring is installed at the opening of the interruption hole. The two ends of each locking rib are respectively connected to the first locking ring and the second locking ring, and the locking ribs are spaced apart. A second receiving space is formed between the first locking ring, the second locking ring, and each locking rib. The interrupter further includes an interruption head, an interruption handle, and a positioning ring. The interruption head is located in the second receiving space. One end of the interruption handle passes through the second receiving space and is connected to the interruption head. The other end of the interruption handle has the positioning ring, and the interruption handle also has a first spring. The two ends of the first spring abut against the fixing member and the positioning ring, respectively. Part of the interruption head moves to block the first locking ring and blocks the communication between the inflow end and the outflow end.

4. The pressure relief structure of the fluid shut-off device as described in claim 3, characterized in that, The valve body is further provided with a return assembly and a return hole on the valve body. The return hole is connected to the flow channel, and the return assembly moves into the flow channel. When the blocking head partially blocks the connection between the inflow end and the outflow end, pressing the return assembly towards the blocking head can release the blocking head from blocking the inflow end and the outflow end, so that the inflow end and the outflow end are connected again.

5. The pressure relief structure of the fluid shut-off device as described in claim 4, characterized in that, The resetting assembly further comprises a cover, a cylinder, a second spring, and a resetting bolt. One end of the cylinder is disposed at the resetting hole, and the other end of the cylinder is located outside the valve body. Part of the resetting bolt is located inside the cylinder, and another part of the resetting bolt protrudes from the cylinder and is fitted with the cover on its end face. The second spring is sleeved on the protruding part of the resetting bolt, and the two ends of the second spring abut against the cover and the cylinder.

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