Safety valve

Abstract

The utility model relates to the technical field of natural gas pipelines, and discloses a safety valve which comprises a valve body, valve pipes are fixedly connected to the two sides of the valve body, heat conduction rings are fixedly connected to the surfaces of the valve pipes, circulation cavities are formed in the heat conduction rings, and a temperature rising mechanism is arranged at the bottom of the valve body. The heating mechanism comprises a box body fixedly connected to the bottom of the valve body, an electric heating rod is fixedly installed in the box body, and micro water pumps are fixedly installed on the two sides of the box body; by arranging the heating mechanism, when a valve pipe is frozen and normal conveying of natural gas is affected, heating liquid in the box body can be heated by starting an electric heating rod, meanwhile, a micro water pump is started, the micro water pump can pump out the heated heating liquid, and the heated heating liquid enters a circulation cavity in a heat conduction ring through a water inlet pipe; and the circulation is performed in sequence, and the heat conduction ring can heat the valve pipe after absorbing the heat energy, so that the unfreezing effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of natural gas pipeline technology, specifically to a safety valve. Background Technology

[0002] A natural gas pipeline is a pipeline that transports natural gas (including associated gas from oil fields) from extraction sites or processing plants to urban gas distribution centers or industrial users; it is also called a gas transmission pipeline. Using natural gas pipelines to transport large quantities of natural gas on land is a common method. Safety valves are components used to shut off and connect natural gas pipelines.

[0003] A search revealed a Chinese patent document disclosing a safety valve for natural gas pipelines [Announcement No.: CN222543141U]. This valve includes a safety valve body, an output end, and an input end. The output end is located on the right side of the safety valve body, and the input end is on the left side. This invention, by incorporating an installation pipe, a sponge, and a sealing assembly, allows the sponge to absorb moisture and impurities from the natural gas as it flows from the input end to the output end. Simultaneously, the pores in the sponge do not obstruct the flow of natural gas, preventing moisture and impurities from corroding the safety valve body and ensuring its service life. This solves the problem that in practical use, natural gas contains a certain amount of moisture and impurities, and existing valves lack the ability to absorb these substances, leading to corrosion, reduced valve life, and increased operating costs, thus limiting their effectiveness.

[0004] Existing technologies and the solutions described above can extend the service life of valves by absorbing moisture in natural gas. However, when using existing valves in winter, the valve pipes may freeze due to low temperatures, preventing the normal delivery of natural gas and thus reducing the practicality of the safety valves. Utility Model Content

[0005] The purpose of this invention is to provide a safety valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a safety valve, including a valve body, valve tubes fixedly connected to both sides of the valve body, a heat-conducting ring fixedly connected to the surface of the valve tubes, a circulation chamber opened inside the heat-conducting ring, and a heating mechanism provided at the bottom of the valve body;

[0007] The heating mechanism includes a housing fixedly connected to the bottom of the valve body. An electric heating rod is fixedly installed inside the housing. A miniature water pump is fixedly installed on both sides of the housing. An inlet pipe is fixedly connected to the outlet of the miniature water pump. One end of the inlet pipe is fixedly connected to a heat-conducting ring. A return pipe is fixedly connected to one side of the heat-conducting ring. One end of the return pipe is fixedly connected to one side of the housing.

[0008] A heat insulation mechanism is disposed on the surface of the heat-conducting ring.

[0009] Preferably, the heat preservation mechanism includes an upper shell and a lower shell. The upper shell has a first skirt extending outward on both sides, and the lower shell has a second skirt extending outward on both sides. The inner walls of the upper shell and the lower shell are fixedly connected with heat preservation cotton, and a positioning mechanism is provided at the top of the second skirt.

[0010] Preferably, the positioning mechanism includes a locking block fixedly connected to the top of the second skirt. The locking block has two movable blocks inside, and each of the two movable blocks has a positioning rod fixedly connected to one side away from each other. One end of the positioning rod extends through to the outside of the locking block. A pressing block is fixedly connected to the top of the movable block, and the top of the pressing block extends through to the top of the locking block. The top of the first skirt has a locking groove for cooperating with the locking block, and the inner wall of the locking groove has a positioning hole for cooperating with the positioning rod.

[0011] Preferably, the card block is provided with a spring inside, and the two ends of the spring are respectively fixedly connected to one side of the two moving blocks.

[0012] Preferably, a cross-shaped limiting block is fixedly connected to the top of the second skirt, and a cross-shaped limiting groove is provided on the top of the first skirt to cooperate with the cross-shaped limiting block.

[0013] Preferably, a partition is fixedly connected to the inner wall of the heat-conducting ring, and the partition is located between the water inlet pipe and the water return pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model, by setting up a heating mechanism, can heat the heating liquid in the tank by activating an electric heating rod when the valve pipe freezes and affects the normal transportation of natural gas. At the same time, a micro water pump is activated, which will draw out the heated liquid, enter the circulation chamber inside the heat conduction ring through the water inlet pipe, and then discharge it back into the tank through the water return pipe. This cycle is repeated. After the heat conduction ring absorbs heat energy, it will heat the valve pipe to achieve the effect of thawing.

[0016] 2. By setting up a heat preservation mechanism, this utility model can connect the upper shell and the lower shell through a positioning mechanism, so that the heat preservation cotton and the heat conduction ring are in close contact, reducing heat loss and further improving the defrosting efficiency.

[0017] 3. This utility model, by setting a positioning mechanism, can push two pressing blocks towards each other, causing the pressing blocks to move the moving block and positioning rod towards the side closer to the spring, so that the positioning rod leaves the positioning hole. Then, the upper shell is moved upward, which can separate the upper shell and the lower shell. After that, the insulation cotton can be re-attached to the inner walls of the upper shell and the lower shell. During installation, align the position of the locking block and the locking slot, push the upper shell downward, so that the upper shell and the lower shell cover the heat conduction ring. Then, release the pressing block, and the elastic force generated by the spring will push the moving block and the positioning rod away from the spring, so that the positioning rod enters the corresponding positioning hole, completing the replacement of the insulation cotton. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This utility model Figure 2 A magnified view of a section at point A in the middle;

[0020] Figure 3 This is a schematic diagram showing the disassembled upper and lower shells of this utility model;

[0021] Figure 4 This is a perspective view of a partial structure of the positioning mechanism in this utility model;

[0022] Figure 5 This is a perspective view of the heating mechanism in this utility model.

[0023] Figure 6 This is a schematic diagram of the heat-conducting ring in this utility model.

[0024] In the diagram: 1. Valve body; 2. Valve pipe; 3. Heat-conducting ring; 4. Circulation chamber; 5. Housing; 6. Electric heating rod; 7. Miniature water pump; 8. Inlet pipe; 9. Return pipe; 10. Upper housing; 11. Lower housing; 12. First skirt; 13. Second skirt; 14. Insulation cotton; 15. Locking block; 16. Moving block; 17. Positioning rod; 18. Pressing block; 19. Locking groove; 20. Positioning hole; 21. Spring; 22. Cross-shaped limiting block; 23. Cross-shaped limiting groove; 24. Partition plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 - Figure 6 As shown,

[0027] Example 1:

[0028] A safety valve includes a valve body 1, valve pipes 2 are fixedly connected to both sides of the valve body 1, a heat-conducting ring 3 is fixedly connected to the surface of the valve pipe 2, a circulation chamber 4 is opened inside the heat-conducting ring 3, and a heating mechanism is provided at the bottom of the valve body 1.

[0029] The heating mechanism includes a housing 5 fixedly connected to the bottom of the valve body 1. An electric heating rod 6 is fixedly installed inside the housing 5. A miniature water pump 7 is fixedly installed on both sides of the housing 5. An inlet pipe 8 is fixedly connected to the outlet end of the miniature water pump 7. One end of the inlet pipe 8 is fixedly connected to the heat conduction ring 3. A return pipe 9 is fixedly connected to one side of the heat conduction ring 3. One end of the return pipe 9 is fixedly connected to one side of the housing 5.

[0030] The heat insulation mechanism is installed on the surface of the heat-conducting ring 3.

[0031] In this embodiment, by setting up a heating mechanism, when the valve pipe 2 freezes and affects the normal transmission of natural gas, the heating liquid in the tank 5 can be heated by starting the electric heating rod 6. At the same time, the micro water pump 7 is started. The micro water pump 7 will draw out the heated liquid, which will enter the circulation chamber 4 inside the heat conduction ring 3 through the water inlet pipe 8, and then be discharged back into the tank 5 through the water return pipe 9. This cycle is repeated. After absorbing heat energy, the heat conduction ring 3 will heat the valve pipe 2 to achieve the effect of thawing.

[0032] It should be noted that the heat-conducting ring 3 is made of copper, which has good thermal conductivity, and the heating liquid is a liquid that can be heated, which is common knowledge to those skilled in the art, so it will not be described in detail.

[0033] A partition 24 is fixedly connected to the inner wall of the heat-conducting ring 3. The partition 24 is located between the water inlet pipe 8 and the water return pipe 9.

[0034] In this embodiment, by setting a baffle 24, the heating liquid will not be discharged directly from the return water pipe 9 after entering the circulation chamber 4, but must completely fill the circulation chamber 4, thereby improving the heating effect of the heat conduction ring 3.

[0035] Example 2:

[0036] Based on Embodiment 1, this embodiment achieves the effect of defrosting the valve tube 2 by injecting heating liquid into the heat conduction ring 3. However, considering that the heat conduction ring 3 is made of copper, heat energy is easily lost, affecting the defrosting efficiency. In this application, the heat preservation mechanism includes an upper shell 10 and a lower shell 11. The upper shell 10 has a first skirt 12 extending outward on both sides, and the lower shell 11 has a second skirt 13 extending outward on both sides. The inner walls of the upper shell 10 and the lower shell 11 are fixedly connected with heat preservation cotton 14, and a positioning mechanism is provided at the top of the second skirt 13.

[0037] In this embodiment, by setting up a heat preservation mechanism, the upper shell 10 and the lower shell 11 can be connected by a positioning mechanism, so that the heat preservation cotton 14 is in close contact with the heat conduction ring 3, reducing heat loss and further improving the defrosting efficiency.

[0038] The top of the second skirt 13 is fixedly connected to a cross-shaped limiting block 22, and the top of the first skirt 12 is provided with a cross-shaped limiting groove 23 that cooperates with the cross-shaped limiting block 22.

[0039] In this embodiment, by setting a cross-shaped limiting block 22 and a cross-shaped limiting groove 23, the cross-shaped limiting block 22 can enter the cross-shaped limiting groove 23 while the upper housing 10 and the lower housing 11 are connected, thereby improving the stability of the connection.

[0040] Example 3:

[0041] Based on Embodiment 1, the design of the insulation cotton 14 in the insulation mechanism of this embodiment can effectively prevent heat loss and improve the defrosting effect. However, considering that the insulation cotton 14 will also be damaged after long-term use, affecting the insulation effect, the positioning mechanism in this application includes a locking block 15 fixedly connected to the top of the second skirt 13. The locking block 15 has two moving blocks 16 inside. The two moving blocks 16 are fixedly connected to the side of each other. The positioning rod 17 is fixedly connected to the side of the two moving blocks 16. One end of the positioning rod 17 extends to the outside of the locking block 15. The top of the moving block 16 is fixedly connected to a pressing block 18. The top of the pressing block 18 extends to the top of the locking block 15. The top of the first skirt 12 has a locking groove 19 that cooperates with the locking block 15. The inner wall of the locking groove 19 has a positioning hole 20 that cooperates with the positioning rod 17.

[0042] In this embodiment, by setting a positioning mechanism, the two pressing blocks 18 can be pushed to a side closer to each other. The pressing blocks 18 will move the moving block 16 and the positioning rod 17 to the side closer to the spring 21, so that the positioning rod 17 leaves the interior of the positioning hole 20. Then, the upper housing 10 can be moved upward to separate the upper housing 10 and the lower housing 11. Then, the insulation cotton 14 can be re-attached to the inner wall of the upper housing 10 and the lower housing 11. During installation, align the position of the locking block 15 and the locking groove 19, push the upper housing 10 downward so that the upper housing 10 and the lower housing 11 cover the heat conducting ring 3. Then, release the pressing block 18. The elastic force generated by the spring 21 will push the moving block 16 and the positioning rod 17 to the side away from the spring 21, so that the positioning rod 17 enters the interior of the corresponding positioning hole 20, thus completing the replacement of the insulation cotton 14.

[0043] The card block 15 is equipped with a spring 21, and the two ends of the spring 21 are fixedly connected to one side of the two moving blocks 16 respectively.

[0044] In this embodiment, by setting a spring 21, when the pressing block 18 is released, the elastic force generated by the spring 21 will push the moving block 16 and the positioning rod 17 to move away from the spring 21, thus achieving the function of resetting.

[0045] Working principle: When valve pipe 2 freezes and affects the normal transmission of natural gas, the heating liquid in the tank 5 is heated by starting the electric heating rod 6. At the same time, the micro water pump 7 is started. The micro water pump 7 will draw out the heated liquid, which will enter the circulation chamber 4 inside the heat conduction ring 3 through the water inlet pipe 8, and then be discharged back into the tank 5 through the water return pipe 9. This cycle continues. After absorbing heat energy, the heat conduction ring 3 will heat the valve pipe 2 to achieve the effect of thawing.

[0046] Meanwhile, the insulation mechanism ensures that the insulation cotton 14 and the heat-conducting ring 3 are in close contact, reducing heat loss and further improving the defrosting efficiency.

[0047] Alternatively, by pushing the two pressing blocks 18 toward each other, the pressing blocks 18 will move the moving block 16 and the positioning rod 17 toward the side closer to the spring 21, causing the positioning rod 17 to leave the interior of the positioning hole 20. Then, by moving the upper housing 10 upward, the upper housing 10 and the lower housing 11 can be separated. After that, the insulation cotton 14 can be re-attached to the inner walls of the upper housing 10 and the lower housing 11. During installation, align the position of the locking block 15 and the locking slot 19, push the upper housing 10 downward, so that the upper housing 10 and the lower housing 11 cover the heat-conducting ring 3. Then, release the pressing blocks 18. The elastic force generated by the spring 21 will push the moving block 16 and the positioning rod 17 toward the side away from the spring 21, so that the positioning rod 17 enters the interior of the corresponding positioning hole 20, thus completing the replacement of the insulation cotton 14.

[0048] It should be noted that the electric heating rod 6 and the miniature water pump 7 are existing devices or equipment in the prior art, or devices or equipment that can be implemented by the prior art. The specific composition and principle of the power supply of the electric heating rod 6 and the miniature water pump 7 are clear to those skilled in the art, so they will not be described in detail here.

[0049] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety valve, comprising a valve body (1), wherein valve pipes (2) are fixedly connected to both sides of the valve body (1), characterized in that: A heat-conducting ring (3) is fixedly connected to the surface of the valve tube (2), and a circulation chamber (4) is opened inside the heat-conducting ring (3). A heating mechanism is provided at the bottom of the valve body (1). The heating mechanism includes a housing (5) fixedly connected to the bottom of the valve body (1). An electric heating rod (6) is fixedly installed inside the housing (5). A miniature water pump (7) is fixedly installed on both sides of the housing (5). An inlet pipe (8) is fixedly connected to the outlet end of the miniature water pump (7). One end of the inlet pipe (8) is fixedly connected to the heat conduction ring (3). A return water pipe (9) is fixedly connected to one side of the heat conduction ring (3). One end of the return water pipe (9) is fixedly connected to one side of the housing (5). The heat insulation mechanism is disposed on the surface of the heat-conducting ring (3).

2. A safety valve according to claim 1, characterized in that: The heat preservation mechanism includes an upper shell (10) and a lower shell (11). The upper shell (10) has a first skirt (12) extending outward on both sides, and the lower shell (11) has a second skirt (13) extending outward on both sides. The inner walls of the upper shell (10) and the lower shell (11) are fixedly connected with heat preservation cotton (14). The top of the second skirt (13) is provided with a positioning mechanism.

3. A safety valve according to claim 2, characterized in that: The positioning mechanism includes a locking block (15) fixedly connected to the top of the second skirt (13). The locking block (15) has two moving blocks (16) inside. The two moving blocks (16) are fixedly connected to a positioning rod (17) on the side away from each other. One end of the positioning rod (17) extends through to the outside of the locking block (15). A pressing block (18) is fixedly connected to the top of the moving block (16). The top of the pressing block (18) extends through to the top of the locking block (15). The top of the first skirt (12) has a locking groove (19) that cooperates with the locking block (15). The inner wall of the locking groove (19) has a positioning hole (20) that cooperates with the positioning rod (17).

4. A safety valve according to claim 3, characterized in that: The card block (15) is equipped with a spring (21) inside, and the two ends of the spring (21) are respectively fixedly connected to one side of the two moving blocks (16).

5. A safety valve according to claim 2, characterized in that: The top of the second skirt (13) is fixedly connected to a cross-shaped limiting block (22), and the top of the first skirt (12) is provided with a cross-shaped limiting groove (23) that cooperates with the cross-shaped limiting block (22).

6. A safety valve according to claim 1, characterized in that: The inner wall of the heat-conducting ring (3) is fixedly connected with a partition (24), which is located between the water inlet pipe (8) and the water return pipe (9).

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