Gas pipeline safety protection structure

Abstract

The utility model discloses a gas pipeline safety protection structure, including base, be equipped with the mounting seat on the base, be equipped with double -faced sealing mechanism between mounting seat and base, be equipped with alarm mechanism on the mounting seat, double -faced sealing mechanism includes fixed air cylinder and protective sleeve, the air outlet end of fixed air cylinder is connected with the tee pipe, two ends of tee pipe are connected with two upper seal air bags and two lower seal air bags respectively, install the exhaust valve on the tee pipe, the bottom of fixed air cylinder side surface is equipped with the air inlet hole, belong to gas pipeline technical field. This gas pipeline safety protection structure, through constantly pressing and loosening the pressing block, fills the gas into the sealed air bag inside, the upper seal air bag and lower seal air bag inflation occur expansion, utilize the upper seal air bag and lower seal air bag fill the gap, can effectively improve the leakproofness to prevent the gas leakage, ensure that the air pressure is enough to trigger the alarm, effectively improve the stability of operation.

Description

Technical Field

[0001] This utility model relates to the field of gas pipeline technology, specifically to a safety protection structure for gas pipelines. Background Technology

[0002] Natural gas pipelines refer to pipelines that transport natural gas (including associated gas produced from oil fields) from extraction sites or processing plants to urban gas distribution centers or industrial users. They are also known as gas transmission pipelines. The protective structure uses alarms to detect leaks at pipeline connections. In the current technology, the sealing between the protective structure and the pipeline is not ideal, making it difficult for the internal gas pressure to reach a level that triggers the alarm, thus resulting in less than ideal operational stability.

[0003] For example, patent publication number CN221881185U describes a safety protection device in the field of protective device technology. It addresses the problem that existing protective devices lack a structure to assist in detecting gas leaks at gas pipeline connections. Their function is limited to physical protection of gas pipeline projects, failing to provide adequate protection for safe operation. This results in functional deficiencies. The proposed device includes a support component. When a leak occurs at a pipeline connection, gas enters the gas collection groove through the arc-shaped groove of the fitting via the air guide hole, and then enters the housing through the interface. When the gas accumulates to a certain amount, the pressure inside the housing increases, pushing the lifting component upwards to trigger the alarm unit. This alerts construction personnel to the leak. While this improves the device's functionality, providing both physical protection and safe pipeline operation, the current design suffers from insufficient sealing between the protective structure and the pipeline. This makes it difficult to achieve sufficient internal pressure to trigger the alarm, leading to less than ideal operational stability. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a safety protection structure for gas pipelines, which solves the problem that the sealing between the protection structure and the pipeline is not ideal, making it difficult to achieve sufficient gas pressure inside the structure to trigger the alarm, thus resulting in less than ideal operational stability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas pipeline safety protection structure, including a base, a mounting seat on the base, a double-sided sealing mechanism between the mounting seat and the base, and an alarm mechanism on the mounting seat;

[0006] The double-sided sealing mechanism includes a fixed air cylinder and a protective sleeve. The outlet end of the fixed air cylinder is connected to a three-way pipe. The two ends of the three-way pipe are respectively connected to two upper sealing airbags and two lower sealing airbags. An exhaust valve is installed on the three-way pipe. An air inlet is opened at the bottom of the side surface of the fixed air cylinder. A one-way valve is installed inside the outlet end of the fixed air cylinder and the air inlet. A piston is slidably connected inside the fixed air cylinder. A first spring is provided at the bottom of the piston. A connecting rod is fixedly connected to the top of the piston. A pressing block is fixedly connected to the top of the connecting rod. A limit block is fixedly connected to the pressing block.

[0007] Preferably, the fixed air cylinder is fixedly installed on the base, and the outer diameter of the fixed air cylinder is smaller than the inner diameter of the protective sleeve, so that the protective sleeve can be fitted over the fixed air cylinder to protect it.

[0008] Preferably, the protective sleeve is fitted over the outside of the fixed air cylinder, and the protective sleeve is fixedly installed on the base by bolts, which facilitates the installation and removal of the protective sleeve.

[0009] Preferably, the two upper sealing airbags are fixedly installed on both sides of the inner wall of the mounting base, and the two lower sealing airbags are fixedly installed on both sides of the inner wall of the base, so that the upper sealing airbags and the lower sealing airbags can seal from both sides.

[0010] Preferably, the bottom end of the first spring abuts against the inner wall of the fixed air cylinder, and the top end of the first spring abuts against the piston, so that the piston can be reset by the first spring.

[0011] Preferably, the limiting block is disposed inside the fixed air cylinder, and the top of the pressing block penetrates through the fixed air cylinder and extends partially to the outside of the fixed air cylinder, so that the pressing block can be easily pressed.

[0012] Preferably, the alarm mechanism includes a fixed base, a threaded block fixedly connected to the top of the fixed base, an elastic membrane fixedly connected inside the fixed base, an alarm device threadedly connected to the fixed base via the threaded block, a stationary contact fixedly connected inside the alarm device, a telescopic rod fixedly connected to the bottom of the stationary contact, a moving contact fixedly connected to the bottom end of the telescopic rod, and a second spring provided on the telescopic rod, so that the alarm can be triggered when the air pressure is sufficient, thus serving as a gas leak alarm.

[0013] This utility model provides a safety protection structure for gas pipelines. Compared with the prior art, it has the following advantages:

[0014] 1. The gas pipeline safety protection structure, by continuously pressing and releasing the pressing block, fills the upper and lower sealing airbags with gas. After being filled with gas, the upper and lower sealing airbags expand and fill the gaps, thereby effectively improving the sealing performance, preventing gas leakage, ensuring sufficient gas pressure to trigger the alarm, and effectively improving the stability of operation.

[0015] 2. The gas pipeline safety protection structure uses increased internal gas pressure to deform the elastic diaphragm. The deformation of the elastic diaphragm pushes the moving contact to move, so that the moving contact contacts the stationary contact to trigger the alarm. This allows the alarm to be triggered when the gas pressure is sufficient, thus serving as a gas leak alarm. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the double-sided sealing mechanism of this utility model.

[0018] Figure 3 This is a schematic diagram of the fixed air cylinder structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the alarm mechanism structure of this utility model.

[0020] In the diagram: 1. Base; 2. Double-sided sealing mechanism; 201. Fixed air cylinder; 202. T-pipe; 203. Upper sealing airbag; 204. Exhaust valve; 205. Air inlet; 206. One-way valve; 207. Piston; 208. Lower sealing airbag; 209. First spring; 210. Connecting rod; 211. Pressing block; 212. Limiting block; 213. Protective sleeve; 3. Mounting base; 4. Alarm mechanism; 401. Fixed base; 402. Threaded block; 403. Elastic diaphragm; 404. Alarm; 405. Static contact; 406. Moving contact; 407. Telescopic rod. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-3This utility model provides a technical solution: a gas pipeline safety protection structure, including a base 1, an installation seat 3 on the base 1, a double-sided sealing mechanism 2 between the installation seat 3 and the base 1, and an alarm mechanism 4 on the installation seat 3. The double-sided sealing mechanism 2 can fill the gap between the pipeline and the base 1 and the installation seat 3, thereby effectively improving the sealing performance, preventing gas leakage, ensuring sufficient gas pressure to trigger the alarm, and effectively improving the stability of operation.

[0023] The double-sided sealing mechanism 2 includes a fixed air cylinder 201 and a protective sleeve 213. The fixed air cylinder 201 is fixedly installed on the base 1. The outer diameter of the fixed air cylinder 201 is smaller than the inner diameter of the protective sleeve 213, allowing the protective sleeve 213 to be fitted over the fixed air cylinder 201 for protection. The protective sleeve 213 is bolted to the base 1, facilitating its installation and removal. The air outlet of the fixed air cylinder 201... A three-way pipe 202 is connected to the end of the base 1. Two upper sealing airbags 203 and two lower sealing airbags 208 are connected to the two ends of the three-way pipe 202, respectively. The two upper sealing airbags 203 are fixedly installed on both sides of the inner wall of the mounting base 3, and the two lower sealing airbags 208 are fixedly installed on both sides of the inner wall of the base 1, allowing the upper and lower sealing airbags 203 and 208 to seal from both sides. An exhaust valve 204 is installed on the three-way pipe 202, located between the three-way pipe 202 and the outlet end of the fixed air cylinder 201. This allows the gas inside the sealed airbag to be discharged. An air inlet 205 is provided at the bottom of the side surface of the fixed air cylinder 201. A one-way valve 206 is installed at both the air outlet of the fixed air cylinder 201 and inside the air inlet 205, allowing the gas to flow in one direction. The sealed airbag can be inflated by pressing the pressing block 211. A piston 207 is slidably connected inside the fixed air cylinder 201. A first spring 209 is provided at the bottom of the piston 207, and the bottom end of the first spring 209 abuts against the inner wall of the fixed air cylinder 201. The first spring 209 contacts the piston 207 at its top, allowing the piston 207 to be reset using the first spring 209. A connecting rod 210 is fixedly connected to the top of the piston 207, and a pressing block 211 is fixedly connected to the top of the connecting rod 210. A limiting block 212 is fixedly connected to the pressing block 211. The limiting block 212 is located inside the fixed air cylinder 201, and the top of the pressing block 211 penetrates through the fixed air cylinder 201 and extends partially to the outside of the fixed air cylinder 201, making it easy to press the pressing block 211.

[0024] Please see Figure 1 and Figure 4The alarm mechanism 4 includes a fixed base 401, which is fixedly mounted on the mounting base 3 and communicates with the interior of the mounting base 3. A threaded block 402 is fixedly connected to the top of the fixed base 401, and an elastic membrane 403 is fixedly connected inside the fixed base 401 to increase the sealing performance. When the air pressure increases, the membrane deforms, causing the starting contact 406 to move. An alarm 404 is threadedly connected to the fixed base 401 through the threaded block 402. The alarm 404 transmits the trigger signal to a remote terminal (such as a mobile phone, computer, or cloud platform) in real time through wireless communication technology (such as 4G, Wi-Fi, NB-IoT, etc.), enabling timely alarm activation in case of abnormal situations. The alarm 404 has a fixed stationary contact 405 inside, and a telescopic rod 407 is fixedly connected to the bottom of the stationary contact 405. The telescopic rod 407 can guide the movement of the moving contact 406. The moving contact 406 is fixedly connected to the bottom of the telescopic rod 407. A second spring is provided on the telescopic rod 407 so that the moving contact 406 can be separated from the stationary contact 405. The increased air pressure inside can cause the elastic diaphragm 403 to deform. The deformation of the elastic diaphragm 403 pushes the moving contact 406 to move, so that the moving contact 406 contacts the stationary contact 405 and triggers the alarm 404. This allows the alarm to be triggered when the air pressure is sufficient, thus serving as a gas leak alarm.

[0025] During operation, pressing the pressing block 211 moves the connecting rod 210, which in turn moves the piston 207. The piston 207 moves downward, pushing gas into the three-way pipe 202 and compressing the first spring 209. Then, releasing the pressing block 211 resets the piston 207, causing it to move upward and draw gas from the air inlet 205 into the fixed air cylinder 201. The gas then flows in one direction through the two one-way valves 206. By continuously pressing and releasing the pressing block 211, gas is filled into the upper sealing air bladder 203 and the lower sealing air bladder 208. After being inflated, the upper and lower sealing air bladders 203 and 208 expand, filling gaps and effectively improving sealing to prevent leakage. This ensures sufficient air pressure to trigger an alarm and effectively improves operational stability.

[0026] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A safety protection structure for gas pipelines, including a base (1), characterized in that: The base (1) is provided with a mounting seat (3), a double-sided sealing mechanism (2) is provided between the mounting seat (3) and the base (1), and an alarm mechanism (4) is provided on the mounting seat (3). The double-sided sealing mechanism (2) includes a fixed air cylinder (201) and a protective sleeve (213). The outlet end of the fixed air cylinder (201) is connected to a three-way pipe (202). The two ends of the three-way pipe (202) are respectively connected to two upper sealing airbags (203) and two lower sealing airbags (208). An exhaust valve (204) is installed on the three-way pipe (202). An air inlet (205) is opened at the bottom of the side surface of the fixed air cylinder (201). One-way valves (206) are installed inside the air outlet and air inlet (205) of the cylinder (201). A piston (207) is slidably connected inside the fixed air cylinder (201). A first spring (209) is provided at the bottom of the piston (207). A connecting rod (210) is fixedly connected to the top of the piston (207). A pressing block (211) is fixedly connected to the top of the connecting rod (210). A limit block (212) is fixedly connected to the pressing block (211).

2. The gas pipeline safety protection structure according to claim 1, characterized in that: The fixed air cylinder (201) is fixedly installed on the base (1), and the outer diameter of the fixed air cylinder (201) is smaller than the inner diameter of the protective sleeve (213).

3. The gas pipeline safety protection structure according to claim 1, characterized in that: The protective sleeve (213) is fitted over the outside of the fixed air cylinder (201), and the protective sleeve (213) is fixedly installed on the base (1) by bolts.

4. The gas pipeline safety protection structure according to claim 1, characterized in that: The two upper sealing airbags (203) are fixedly installed on both sides of the inner wall of the mounting base (3), and the two lower sealing airbags (208) are fixedly installed on both sides of the inner wall of the base (1).

5. The gas pipeline safety protection structure according to claim 1, characterized in that: The bottom end of the first spring (209) abuts against the inner wall of the fixed air cylinder (201), and the top end of the first spring (209) abuts against the piston (207).

6. The gas pipeline safety protection structure according to claim 1, characterized in that: The limiting block (212) is located inside the fixed air cylinder (201), and the top of the pressing block (211) penetrates through the fixed air cylinder (201) and extends partially to the outside of the fixed air cylinder (201).

7. The gas pipeline safety protection structure according to claim 1, characterized in that: The alarm mechanism (4) includes a fixed base (401), a threaded block (402) is fixedly connected to the top of the fixed base (401), and an elastic membrane (403) is fixedly connected inside the fixed base (401).

8. The gas pipeline safety protection structure according to claim 7, characterized in that: The fixed base (401) is threadedly connected to the alarm (404) via the threaded block (402). The alarm (404) has a fixed stationary contact (405) inside. The bottom of the stationary contact (405) is fixedly connected to the telescopic rod (407). The bottom end of the telescopic rod (407) is fixedly connected to the moving contact (406). The telescopic rod (407) is provided with a second spring.

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