Overpressure interruption apparatus

Abstract

An overpressure interruption apparatus, comprising: a main body (1), and an air inlet chamber (11) and an air outlet chamber (12) provided inside the main body, the air inlet chamber being in communication with the air outlet chamber by means of a communication hole (13), the main body having a combined hole (14), the combined hole being in communication with the air outlet chamber, and the outer side of the main body being recessed to form an annular groove (15) around the combined hole; and a stop assembly (2), comprising an elastic valve (21), a rod member (22), a flow stop member (23), a reset button (24), and an outer cover (25), wherein the outer cover and the elastic valve are provided in the annular groove, the elastic valve is partially located between the annular groove and the outer cover, the outer cover comprises an opening (251), at least part of the reset button is located in the outer cover and corresponds to the opening, the flow stop member is located at a position of the air inlet chamber corresponding to the communication hole, the rod member penetrates the elastic valve, and the rod member is connected to the reset button and the flow stop member. The overpressure interruption apparatus has a simple structure, so that the production cost can be decreased and the size can be reduced.

Description

Overpressure interrupting device Technical Field

[0001] The present application relates to an overpressure shutoff device, which is a device that is installed in a gas storage device and can prevent the fluid from continuing to flow out when the pressure of the fluid exceeds a set value due to an accident. Background Art

[0002] Gas refers to gas that can be used as fuel (for example, natural gas, coal gas, etc.). It can generate a large amount of heat energy after combustion, so it is widely used in daily life. For example, water heaters and gas stoves are common devices in daily life that use gas as kinetic energy.

[0003] Generally speaking, when a gas storage device is used, relevant protective devices will be installed at the gas outlet of the gas storage device, such as an overflow valve. The overflow valve is a very common valve body, which is often used in pipelines for conveying fluids. The overflow valve will have a flow setting value according to the specifications. When the fluid flowing into the overflow valve exceeds this flow setting value, the overflow valve will close to block the fluid from continuing to flow downstream. For example, if an abnormality occurs in the gas supply source, the flow of the fluid flowing into the overflow valve will increase instantly, causing the overflow valve to close and prevent the fluid from continuing to leak out. Alternatively, an abnormality in the upstream source will cause the output flow to surge, triggering the overflow valve to close. Otherwise, if the internal pressure of the pipeline suddenly increases by more than 10%, and the pipeline and equipment are old, a sudden gas explosion may occur.

[0004] However, commercially available protective devices similar to overflow valves have problems such as overly complex structures (combining multiple functions or linkage mechanisms in different axial directions) and high production costs. Due to their complex structures, they are relatively large in size. The above shortcomings are unacceptable to consumers and manufacturers. Therefore, it is necessary to improve the protective devices of gas storage devices to address the above shortcomings.

[0005] Summary of the Invention

[0006] The main purpose of this application is to provide an overpressure trip device that has a lower structural complexity than existing products, thereby reducing production costs and reducing volume.

[0007] In order to achieve the above-mentioned purposes and effects, the present application provides an overpressure shut-off device, which includes: a main body, an air inlet chamber and an air outlet chamber inside the main body, the air inlet chamber and the air outlet chamber are connected by a connecting hole, the main body has a combination hole, the combination hole is connected to the air outlet chamber, and the outer side of the main body is recessed with an annular groove around the combination hole; a stop assembly, which includes an elastic valve, a rod, a flow stop, a return button, and an outer cover, the outer cover and the elastic valve are arranged in the annular groove, the elastic valve is partially located between the annular groove and the outer cover, the outer cover includes a cover opening, the return button is at least partially located in the outer cover and corresponds to the cover opening, the flow stop is located at the position of the air inlet chamber corresponding to the connecting hole, the rod passes through the elastic valve, one end of the rod is connected to the return button and the other end is connected to the flow stop.

[0008] Furthermore, the rod member includes a rod portion and a ring portion connected to each other, a clip is screwed to the rod portion, and the elastic valve portion is clamped between the ring portion and the clip.

[0009] Furthermore, the reset button includes a narrow diameter section and a wide diameter section connected to each other, the narrow diameter section can pass through the cover opening, and the wide diameter section cannot pass through the cover opening.

[0010] Furthermore, the flow stopper includes a metal layer and an elastic covering layer, and the portion of the main body around the connecting hole is a different material portion, and at least one of the different material portion and the metal layer is a magnetic material and the other is a magnet material.

[0011] Furthermore, the elastic covering layer is combined with the rod in a T-shaped groove.

[0012] Furthermore, there is a step difference between the side of the elastic covering layer away from the rod and the metal layer, thereby forming a circular groove.

[0013] Furthermore, the rod includes an anti-leakage plate portion, and the anti-leakage plate portion covers the top of the communicating hole.

[0014] The present application achieves the effect of fluid overpressure flow stopping by utilizing the combination of elastic valves, rods, and flow stops. Generally speaking, under normal use, the flow rate of the fluid flowing through the main body should be stable, so the pressure inside the main body should also be in a stable state. When the fluid flowing through the main body's air inlet chamber and air outlet chamber causes a sudden change in flow rate due to an accident, thereby causing the internal pressure of the main body to become unstable and pressurized, the sudden increase in pressure will cause the elastic valve to expand and push upward. When the elastic valve pushes upward, it will drive the rod to rise, so that the flow stop will block the connecting hole, making it impossible for the fluid inside the main body to flow to the air outlet chamber. When the abnormality is resolved, only the return button needs to be pressed to make the elastic valve flip down and return to its original shape, thereby releasing the fluid blockage. Based on the above content, it can be seen that the structure of the present application only requires a single axial action to achieve the function of fluid blocking and returning, and there is no need for multiple axial mechanisms to achieve various functions as in existing products. Therefore, the structural complexity of the present application is indeed lower than that of existing products, which can indeed reduce production costs and reduce volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a three-dimensional schematic diagram of this application.

[0016] Figure 2 is a schematic diagram of the decomposition of this application.

[0017] FIG3 is a schematic cross-sectional view of line segment III-III in FIG1 .

[0018] FIG4 is a schematic diagram of fluid flow in this application.

[0019] FIG5 is a schematic diagram showing the elastic valve expanding and pushing upward, and the flow stopper blocking the communicating hole.

[0020] FIG6 is a schematic diagram of another embodiment of the present invention.

[0021] FIG7 is a schematic diagram of fluid flow according to another embodiment of the present invention.

[0022] In the figure: 1 main body; 11 air inlet chamber; 12 air outlet chamber; 13 communicating hole; 14 combination hole; 15 annular groove; 16 different material portion; 2 stopper assembly; 21 elastic valve; 22 rod; 221 rod portion; 222 annular portion; 23 flow stopper; 231 metal layer; 232 elastic coating layer; 2321 T-shaped groove; 233 circular groove; 24 return button; 241 narrow diameter section; 242 wide diameter section; 25 outer cover; 251 cover opening; 26 clip. DETAILED DESCRIPTION

[0023] To understand the implementation of the present application in more detail, please also watch the implementation of the present application. As shown in Figures 1 to 5, the present application is an overpressure shutoff device, which includes: a main body 1, an air inlet chamber 11 and an air outlet chamber 12 inside the main body 1, the air inlet chamber 11 and the air outlet chamber 12 are connected by a connecting hole 13, the main body 1 has a combination hole 14, the combination hole 14 is connected to the air outlet chamber 12, and the outer side of the main body 1 is recessed with an annular groove 15 around the combination hole 14; a stopper assembly 2, which includes an elastic valve 21, a rod 2 2. A flow stop 23, a return button 24, and an outer cover 25. The outer cover 25 and the elastic valve 21 are arranged in the annular groove 15. The elastic valve 21 is partially located between the annular groove 15 and the outer cover 25. The outer cover 25 includes a cover opening 251. The return button 24 is at least partially located in the outer cover 25 and corresponds to the cover opening 251. The flow stop 23 is located at a position in the air inlet chamber corresponding to the connecting hole 13. The rod 22 is penetrated by the elastic valve 21. One end of the rod 22 is connected to the return button 24 and the other end is connected to the flow stop 23.

[0024] 4 , the present application realizes the effect of fluid overpressure flow stop by using the elastic valve 21 in combination with the rod 22 and the flow stop 23. When the fluid flowing through the air inlet chamber 11 and the air outlet chamber 12 suddenly increases in pressure due to an accident (for example, an abnormality occurs in the gas supply source), which leads to the instability of the internal pressure of the main body 1 and the pressurization, the sudden increase in pressure will cause the elastic valve 21 to expand and push upward as shown in FIG5 . When the elastic valve 21 pushes upward, it will drive the rod 22 to rise, so that the flow stop 23 The connecting hole 13 is blocked so that the fluid inside the main body 1 cannot flow to the air outlet chamber 12. When the abnormality is resolved, the elastic valve 21 can be flipped down and restored to its original shape (as shown in Figure 4) by simply pressing the reset button 24, thereby releasing the fluid blockage. Based on the above content, it can be seen that the structure of the present application only requires a single axial action to achieve the functions of fluid blocking and restoring, and there is no need for multiple axial mechanisms to achieve various functions like existing products. Therefore, the structural complexity of the present application is indeed lower than that of existing products, which can indeed reduce production costs and reduce volume.

[0025] A connection method for the rod and the elastic valve 21 is further provided, wherein the rod 22 includes a rod portion 221 and a ring portion 222 connected to each other, a clip 26 is screwed to the rod portion 221, and the elastic valve 21 is partially clamped between the ring portion 222 and the clip 26.

[0026] Furthermore, the return button 24 includes a narrow diameter section 241 and a wide diameter section 242 connected to each other. The narrow diameter section 241 can pass through the cover opening 251, while the wide diameter section 242 cannot pass through the cover opening 251. This structure prevents the return button 24 from completely protruding from the outer cover 25 when the return button 24 moves upward.

[0027] 4 and 5 , the narrow diameter section 241 of the reset button 24 may be longer and protrude from the outer cover 25 . The advantage of this structure is that the user can manually activate the fluid shutoff function by pulling the narrow diameter section 24 .

[0028] Furthermore, the flow stop member 23 includes a metal layer 231 and an elastic coating layer 232, and the portion of the main body 1 around the connecting hole 13 is a different material portion 16, and at least one of the different material portion 16 and the metal layer 231 is a magnetic material and the other is a magnet material. The magnetic material can be iron, cobalt, nickel, etc. The magnetic material does not necessarily have magnetism, but after being close to the magnet, it will be magnetized and thus have magnetism. Therefore, when the flow stop member 23 is against the connecting hole 13, at least one of the different material portion 16 and the metal layer 231 is a magnetic material and the other is a magnet material can be adsorbed to each other, thereby more stably performing the function of blocking the fluid. In addition to the above structure, at least one of the portion around the cover opening 251 of the outer cover 25 and the wide diameter section 242 can also be a magnetic material and the other is a magnet material.

[0029] Furthermore, the elastic covering layer 232 is combined with the rod 22 in a T-shaped slot 2321. Since the elastic covering layer 232 is elastic, when assembling the present application, the user only needs to squeeze one end of the rod 22 into the T-shaped slot 2321 to quickly complete the assembly.

[0030] Furthermore, a step is formed between the side of the elastic coating layer 232 away from the rod 22 and the metal layer 231 to form a circular groove 233 . The circular groove 233 enables the fluid to push the flow-stopping member 23 more stably.

[0031] 6 , the rod 22 includes a leak-proof plate 223, which covers the top of the connecting hole 13. When the gas source is abnormal, parts are damaged, improper human operation is not completely closed, or the terminal pipeline is installed or repaired, etc., the gas from the gas source will leak into the interior of the main body 1. The pressure caused by such gas leaks is not enough to expand the elastic valve 21 and push it upward. The addition of the leak-proof plate 223 will prevent the aforementioned leaked gas from pushing the leak-proof plate 223 to avoid gas leakage. When the gas equipment is used normally, the thrust generated by the flow rate of the gas can be shown in FIG. 7 to push the leak-proof plate 223 and make the rod 22 rise slightly, so that the gas can be supplied smoothly. Therefore, the structure of the leak-proof plate 223 can not only block abnormal gas leaks into the interior of the main body 1, but also will not affect the gas supply under normal use.

[0032] The above-described embodiments are merely preferred embodiments for the purpose of fully illustrating the present application, and the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art based on the present application are within the scope of protection of the present application. The scope of protection of the present application shall be subject to the claims.

Claims

1. An overpressure trip device, characterized in that: include: A main body, wherein an air inlet chamber and an air outlet chamber are formed inside the main body, the air inlet chamber and the air outlet chamber are connected by a communication hole, the main body has a combination hole, the combination hole is connected to the air outlet chamber, and an annular groove is recessed around the combination hole on the outer side of the main body; A stop assembly includes an elastic valve, a rod, a flow stop, a return button, and an outer cover. The outer cover and the elastic valve are arranged in the annular groove. The elastic valve is partially located between the annular groove and the outer cover. The outer cover includes a cover opening. At least a portion of the return button is located in the outer cover and corresponds to the cover opening. The flow stop is located at a position in the air inlet chamber corresponding to the connecting hole. The rod passes through the elastic valve. One end of the rod is connected to the return button, and the other end of the rod is connected to the flow stop.

2. The overpressure tripping device according to claim 1, wherein: The rod component comprises a rod portion and a ring portion which are connected to each other. A clip is screwed on the rod portion, and a part of the elastic valve is clamped between the ring portion and the clip.

3. The overpressure tripping device according to claim 1, wherein: The reset button includes a narrow diameter section and a wide diameter section which are connected to each other. The narrow diameter section can pass through the cover opening, while the wide diameter section cannot pass through the cover opening.

4. The overpressure tripping device according to claim 1, wherein: The flow stopper comprises a metal layer and an elastic covering layer. The portion of the main body around the connecting hole is a different material portion. At least one of the different material portion and the metal layer is made of magnetic material and the other is made of magnet material.

5. The overpressure trip device according to claim 4, characterized in that: The elastic covering layer is combined with the rod through a T-shaped groove.

6. The overpressure tripping device according to claim 4, characterized in that: A step is formed between the side of the elastic covering layer away from the rod and the metal layer, thereby forming a circular groove.

7. The overpressure trip device according to claim 1, characterized in that: The rod comprises an anti-leakage plate portion, and the anti-leakage plate portion covers the upper portion of the communicating hole.

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