Natural gas emergency cut-off valve

Abstract

The utility model discloses a natural gas emergency cut-off valve which comprises a cut-off valve body. A connecting base is arranged at the top end of the stop valve body. The cutting-off part is arranged at the top end of the connecting base, the manual assembly is arranged at the top end of the cutting-off part, and the manual assembly is used for an operator to manually reset the cutting-off part; the connecting parts are arranged at the two ends of the stop valve body. According to the stop valve, the connecting part is arranged on the outer wall of the stop valve body, when an operator replaces the stop valve body, a plurality of connecting thread rings are screwed by the operator, the connecting thread rings slide on the outer wall of the sliding pipe through thread fit when being screwed, and meanwhile, the connecting thread rings abut against the spring when sliding, so that the stop valve body is replaced. When the connecting thread ring is screwed out of the connecting pipe, the whole section of stop valve main body can be mechanically disassembled, so that an operator can directly replace the stop valve main body without changing the position of a pipeline, and the stop valve main body can be conveniently disassembled and assembled.

Description

Technical Field

[0001] This utility model relates to the technical field of natural gas emergency shut-off valves, and in particular to a natural gas emergency shut-off valve. Background Technology

[0002] The natural gas emergency shut-off valve is an important safety device, mainly used to ensure that the natural gas supply can be quickly cut off in an emergency to prevent the escalation or occurrence of an accident.

[0003] When connecting the natural gas emergency shut-off valve, the operator needs to connect the shut-off valve to the output end of the natural gas pipeline. The pipe opening at the connection point of the shut-off valve is equipped with a threaded ring for connection. The position of the threaded ring is fixed. When connecting the threaded ring, the operator needs to screw the threaded ring together with the shut-off valve to the output end of the pipeline. Then, the input end of the natural gas pipeline is screwed onto one end of the threaded ring. Since the pipeline connecting to the natural gas pipeline in the kitchen is fixed, the shut-off valve in the kitchen is usually installed and connected together with the natural gas pipeline. If the shut-off valve is damaged and needs to be replaced, the entire shut-off valve and the natural gas pipeline need to be removed. The replacement process is time-consuming and laborious. Therefore, a natural gas emergency shut-off valve was designed. Utility Model Content

[0004] The purpose of this invention is to provide a natural gas emergency shut-off valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a natural gas emergency shut-off valve, comprising a shut-off valve body, wherein a connecting seat is provided at the top of the shut-off valve body;

[0006] A cut-off section is provided at the top of the connecting seat, and the cut-off section is used to block the natural gas inside the cut-off valve body;

[0007] A manual component is provided at the top of the cutting section, and the manual component is used by the operator to manually reset the cutting section;

[0008] The connecting parts are located at both ends of the shut-off valve body.

[0009] Preferably, the cutting portion includes:

[0010] A cut-off piston is provided, with its bottom end connected to the top end of a connecting seat. A manual assembly is slidably mounted on the top end of the cut-off piston.

[0011] A coil is disposed on the outer wall of the cutting piston.

[0012] Preferably, the manual component includes:

[0013] Reset button; the reset button is slidably connected to the top of the cut-off piston;

[0014] A protective shell, the bottom end of which is threadedly connected to the top of the cut-off piston.

[0015] Preferably, the outer wall of the reset button is fitted onto the inner wall of the protective shell, and the input end of the coil is provided with a wire.

[0016] Preferably, the connecting portion includes:

[0017] A plurality of sliding tubes are respectively disposed at both ends of the shut-off valve body, and a plurality of fixing rings are provided on the outer wall of the plurality of sliding tubes;

[0018] Connecting threaded rings, multiple connecting threaded rings are slidably connected to the outer wall of multiple sliding tubes.

[0019] Preferably, a spring is provided on the outer wall of the plurality of sliding tubes at the end near the fixed ring, and a threaded tube is provided at the end of the plurality of sliding tubes away from the spring.

[0020] Preferably, the outer wall of the threaded tube is threadedly connected to the inner wall of the connecting threaded ring, and multiple connecting tubes are provided on the inner wall of the multiple connecting threaded rings at the end away from the shut-off valve body.

[0021] Preferably, the locking mechanism includes:

[0022] A hinged column is disposed at the front end of the shut-off valve body;

[0023] Locking rings, a plurality of which are rotatably connected to the outer wall of the hinge post, are provided with a plurality of fixing plates at the ends of the locking rings away from the hinge post, and fixing pins are provided at the joints of the plurality of fixing plates.

[0024] The technical effects and advantages of this utility model are as follows:

[0025] This utility model utilizes a connecting part and a locking mechanism on the outer wall of the shut-off valve body. When the operator replaces the shut-off valve body, the operator rotates multiple threaded connecting rings. When the threaded connecting rings are rotated, they slide on the outer wall of the sliding tube through the threaded engagement. At the same time, the threaded connecting rings press against the spring when sliding. When the threaded connecting rings are rotated out of the connecting tube, the entire shut-off valve body can be disassembled, allowing the operator to replace it directly without changing the position of the pipeline. This facilitates the disassembly and installation of the shut-off valve body. After the shut-off valve body is installed, the operator can install the hinge pin and locking ring at the connection between the shut-off valve body and the threaded connecting rings. The locking ring then locks the connection of the threaded connecting rings, ensuring that the threaded connecting rings can stably connect to the shut-off valve body. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0027] Figure 2 This is a front view of the main structure of this utility model.

[0028] Figure 3 This is a side sectional view of the connection structure between the connecting pipe and the connecting threaded ring of this utility model.

[0029] In the diagram: 1. Shut-off valve body; 2. Shut-off section; 201. Shut-off piston; 202. Coil; 203. Wire; 204. Connecting seat; 3. Manual assembly; 301. Reset button; 302. Protective shell; 4. Connecting section; 401. Sliding tube; 402. Spring; 403. Connecting threaded ring; 5. Fixing ring; 501. Threaded tube; 502. Connecting tube; 6. Hinge column; 601. Locking ring; 602. Fixing plate; 603. Fixing pin. Detailed Implementation

[0030] 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.

[0031] This utility model provides, for example Figure 1-3 Shown:

[0032] Example 1:

[0033] A natural gas emergency shut-off valve, comprising:

[0034] The shut-off valve body 1 has a connecting seat 204 at its top end;

[0035] Cut-off part 2 is provided at the top of the connecting seat 204 and is used to block the natural gas inside the shut-off valve body 1;

[0036] Manual component 3 is located at the top of the cutting section 2 and is used by the operator to manually reset the cutting section 2.

[0037] Connecting part 4 is provided at both ends of the shut-off valve body 1;

[0038] A locking mechanism is provided at the connection between the connecting part 4 and the shut-off valve body 1.

[0039] Specifically, the cutting part 2 includes:

[0040] Cut-off piston 201, the bottom end of cut-off piston 201 is connected to the top end of connecting seat 204, and the manual assembly 3 is slidably disposed at the top end of cut-off piston 201;

[0041] Coil 202 is disposed on the outer wall of the cutting piston 201. The manual assembly 3 includes:

[0042] Reset button 301; Reset button 301 is slidably connected to the top of cut-off piston 201;

[0043] The protective shell 302 is threaded to the top of the cut-off piston 201 at its bottom end. The outer wall of the reset button 301 is fitted onto the inner wall of the protective shell 302. The input end of the coil 202 is provided with a wire 203.

[0044] It should be noted that the working principle of the shut-off piston 201 and coil 202 is based on the working components of the gas shut-off valve of model DPQR. The operator needs to connect the wire 203 to the power source first. One side of the shut-off valve body 1 also needs to be connected to the natural gas detector. When the detector and shut-off piston 201 detect gas leakage, the wire 203 will connect to the power source and start the coil 202. When the coil 202 is working, it will drive the plug rod inside the shut-off piston 201 to work. The plug rod will block the inside of the shut-off valve body 1. At the same time, the plug rod will pull the reset button 301 down. When the operator resets the shut-off piston 201, the protective shell 302 can be unscrewed from the top of the shut-off piston 201. Then, by manually pressing the reset button 301, the blocking operation of the shut-off piston 201 on the shut-off valve body 1 can be released.

[0045] Example 2:

[0046] A natural gas emergency shut-off valve, comprising:

[0047] Shut-off valve body 1; a connecting seat 204 is provided at the top of the shut-off valve body 1;

[0048] Cut-off part 2 is provided at the top of the connecting seat 204 and is used to block the natural gas inside the shut-off valve body 1;

[0049] Manual component 3 is located at the top of the cutting section 2 and is used by the operator to manually reset the cutting section 2.

[0050] Connecting part 4 is provided at both ends of the shut-off valve body 1;

[0051] A locking mechanism is provided at the connection between the connecting part 4 and the shut-off valve body 1.

[0052] Specifically, the connecting part 4 includes:

[0053] Sliding tube 401, multiple sliding tubes 401 are respectively arranged at both ends of the shut-off valve body 1, and multiple fixing rings 5 ​​are provided on the outer wall of the multiple sliding tubes 401;

[0054] A connecting threaded ring 403 is slidably connected to the outer wall of a plurality of sliding tubes 401. A spring 402 is provided on the outer wall of the plurality of sliding tubes 401 at the end near the fixed ring 5. A threaded tube 501 is provided at the end of the plurality of sliding tubes 401 away from the spring 402. The outer wall of the threaded tube 501 is threadedly connected to the inner wall of the connecting threaded ring 403. A plurality of connecting tubes 502 are provided on the inner wall of the plurality of connecting threaded rings 403 at the end away from the shut-off valve body 1.

[0055] It should be noted that the sliding tube 401 is located at the two ends of the pipe opening of the shut-off valve body 1. The function of the fixing ring 5 is to restrict the movement of the spring 402. The inner wall of the connecting threaded ring 403 can slide along the outer wall of the sliding tube 401. When the connecting threaded ring 403 is screwed and the threaded tube 501 is threaded together, the connecting threaded ring 403 is displaced. At the same time, the connecting threaded ring 403 will slide along the outer wall of the sliding tube 401. When sliding, the connecting threaded ring 403 will also squeeze the spring 402 to restrict it. When the connecting threaded ring 403 is screwed out of the connecting tube 502, the connection between the shut-off valve body 1 and the connecting tube 502 can be released, and the shut-off valve body 1 can be easily disassembled and assembled.

[0056] Example 3:

[0057] A natural gas emergency shut-off valve, comprising:

[0058] Shut-off valve body 1; a connecting seat 204 is provided at the top of the shut-off valve body 1;

[0059] Cut-off part 2 is provided at the top of the connecting seat 204 and is used to block the natural gas inside the shut-off valve body 1;

[0060] Manual component 3 is located at the top of the cutting section 2 and is used by the operator to manually reset the cutting section 2.

[0061] Connection part 4 is provided at both ends of the shut-off valve body 1.

[0062] Specifically, the locked-down institutions include:

[0063] Hinge post 6, which is located at the front end of the shut-off valve body 1;

[0064] Locking ring 601, multiple locking rings 601 are rotatably connected to the outer wall of hinge column 6, multiple fixing plates 602 are provided at the ends of multiple locking rings 601 away from hinge column 6, and fixing pins 603 are provided at the connection of multiple fixing plates 602.

[0065] It should be noted that bearings are provided at both ends of the hinge column 6, and the locking ring 601 can be split into two sections. One end of each locking ring 601 is rotatably connected to the bearing. The locking ring 601 can be split by rotation. The fixing plate 602 is set at one split end of the locking ring 601. The fixing plates 602 can be fixed together by the fixing pin 603. When the locking ring 601 and the fixing plate 602 are fixed, they can be combined into a complete annular locking ring 601, and the fixing ring 5 is locked to the outer wall of the sliding tube 401, so that the connecting threaded ring 403 cannot slide on the outer wall of the sliding tube 401, and at the same time, the connection between the connecting threaded ring 403 and the threaded tube 501 and the connecting tube 502 is locked.

[0066] Working principle of this utility model:

[0067] The specific operation is as follows: The operator needs to connect one end of the wire 203 to the power source. When the shut-off piston 201 and the shut-off valve body 1 detect a natural gas leak, the wire 203 will energize the coil 202. The coil 202 then controls the shut-off piston 201 to cut off and block the inner wall of the shut-off valve body 1, thereby blocking the natural gas. At this time, the reset button 301 retracts. After the natural gas leak is resolved, the operator can remove the protective shell 302 from the outer wall of the reset button 301 and manually pull out the reset button 301. When the reset button 301 is pulled out, the shut-off piston 201 stops blocking the shut-off valve body 1. When the operator needs to replace the shut-off valve body 1, the operator needs to prioritize replacing the fixed... Pin 603 is removed from the connection of the fixed plate 602. Then, multiple locking rings 601 are flipped using the hinge pin 6 to flip the locking rings 601 away from the spring 402. The locking rings 601 and the hinge pin 6 can then be removed from the front end of the shut-off valve body 1. Next, the operator needs to manually rotate multiple threaded connecting rings 403. The threaded connecting rings 403 will engage with the outer walls of multiple connecting pipes 502 and threaded pipes 501. At the same time, the threaded connecting rings 403 will continue to slide on the outer wall of the sliding pipe 401. When the threaded connecting rings 403 slide out of the connecting pipe 502, the shut-off valve body 1 can be removed from the connection of multiple connecting pipes 502, achieving convenient replacement.

[0068] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A natural gas emergency shut-off valve, characterized in that, include: The shut-off valve body (1) has a connecting seat (204) at its top end; Cut-off part (2), the cut-off part (2) is provided at the top of the connecting seat (204), the cut-off part (2) is used to block the natural gas inside the cut-off valve body (1); Manual component (3) is provided at the top of the cutting part (2) and is used by the operator to manually reset the cutting part (2). A connecting part (4) is provided at both ends of the shut-off valve body (1); A locking mechanism is provided at the connection between the connecting part (4) and the shut-off valve body (1).

2. A natural gas emergency shut-off valve according to claim 1, characterized in that, The cutting portion (2) includes: A cut-off piston (201) is fixedly connected at its bottom end to the top end of a connecting seat (204), and the manual assembly (3) is slidably disposed at the top end of the cut-off piston (201). A coil (202) is disposed on the outer wall of the cut-off piston (201).

3. A natural gas emergency shut-off valve according to claim 2, characterized in that, The manual component (3) includes: A reset button (301) is slidably connected to the top of the cut-off piston (201); A protective shell (302) is provided, the bottom end of which is threadedly connected to the top of the cut-off piston (201).

4. A natural gas emergency shut-off valve according to claim 3, characterized in that, The outer wall of the reset button (301) is fitted onto the inner wall of the protective shell (302), and the input end of the coil (202) is provided with a wire (203).

5. A natural gas emergency shut-off valve according to claim 1, characterized in that, The connecting part (4) includes: Sliding tubes (401), a plurality of the sliding tubes (401) are respectively disposed at both ends of the shut-off valve body (1), and a plurality of fixing rings (5) are provided on the outer wall of the plurality of sliding tubes (401); A connecting threaded ring (403) is provided, and a plurality of the connecting threaded rings (403) are slidably connected to the outer wall of a plurality of sliding tubes (401).

6. A natural gas emergency shut-off valve according to claim 5, characterized in that, A spring (402) is provided on the outer wall of the plurality of sliding tubes (401) and at the end near the fixed ring (5), and a threaded tube (501) is provided at the end of the plurality of sliding tubes (401) away from the spring (402).

7. A natural gas emergency shut-off valve according to claim 6, characterized in that, The outer wall of the threaded tube (501) is threadedly connected to the inner wall of the connecting threaded ring (403), and multiple connecting tubes (502) are provided on the inner wall of the multiple connecting threaded rings (403) at the end away from the shut-off valve body (1).

8. A natural gas emergency shut-off valve according to claim 1, characterized in that, The locking mechanism includes: A hinge post (6) is provided at the front end of the shut-off valve body (1); Locking rings (601), a plurality of locking rings (601) are rotatably connected to the outer wall of the hinge post (6), a plurality of fixing plates (602) are provided at the ends of the plurality of locking rings (601) away from the hinge post (6), and fixing pins (603) are provided at the connection of the plurality of fixing plates (602).

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