Gas pipeline water mist explosion-proof device

By designing atomizing nozzles, cylinders, leaks, and fan blade assemblies in the gas delivery pipeline, the corrosion problem caused by water mist accumulation was solved, achieving safety and explosion-proof effects in gas delivery.

CN117462892BActive Publication Date: 2026-06-23SHAANXI BINCHANG NEW ENERGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHAANXI BINCHANG NEW ENERGY CO LTD
Filing Date
2023-09-14
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

The water mist after spraying can easily form droplets that accumulate inside the gas delivery pipeline, leading to corrosion.

Method used

A fine water mist explosion-proof device for gas conveying pipelines was designed, including an atomizing nozzle, a cylinder, a drain hole, a ring, and a fan blade assembly. The atomizing nozzle sprays fine water mist to reduce the gas concentration, and the cylinder and drain hole discharge water droplets. Combined with the fan blade assembly and motor, gas leakage is prevented. The ring and connecting rod enable the atomizing nozzle to be flipped and cleaned.

Benefits of technology

It effectively prevents gas explosions, avoids corrosion caused by excessive water inside the pipeline, and ensures the safety and reliability of gas transportation.

✦ Generated by Eureka AI based on patent content.

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    Figure CN117462892B_ABST
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Abstract

The application provides a gas conveying pipeline fine water mist explosion-proof device, which comprises a long pipe, a plurality of atomizing nozzles, a communicating cavity arranged in the long pipe, a water pipe communicated with one end of the communicating cavity, and a drainage cleaning mechanism arranged on the arc surface of the long pipe. The drainage cleaning mechanism comprises a leakage hole, a cylinder and a fan blade assembly. The leakage hole is arranged on the arc surface of the long pipe, the cylinder is inserted into the leakage hole, and the fan blade assembly is arranged in the cylinder. The arc surface of the long pipe is provided with a square hole. The gas in the pipeline is sprayed by the atomizing nozzles, so that the concentration of the gas is reduced, and the gas explosion is prevented to a certain extent. The water in the pipeline is discharged through the cylinder and the leakage hole, so that the rusting of the pipeline caused by excessive water in the pipeline is avoided.
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Description

Technical Field

[0001] This invention relates to the field of gas pipeline explosion protection technology, and more specifically, to a fine water mist explosion protection device for gas conveying pipelines. Background Technology

[0002] Methane gas is a gas, typically referring to natural gas or liquefied petroleum gas. These gases are primarily composed of methane, but also contain other hydrocarbons such as propane and butane. Methane gas is widely used in industrial, domestic, and commercial applications to supply energy and fuel.

[0003] Gas can be transported using pipelines. To prevent explosions during the transport of low-concentration gas, fine water mist needs to be sprayed into the pipeline to reduce the concentration. However, the sprayed water mist can easily form droplets that accumulate inside the pipeline, causing corrosion.

[0004] For example, the specification of the "Fine Water Mist Explosion-Proof Device for Low-Concentration Gas Conveying Pipelines" disclosed in Chinese Utility Model Patent (Application No.: 202222620150.5) states that current fine water mist explosion-proof devices for low-concentration gas conveying pipelines can reduce the risk of gas explosion by spraying water mist onto the internal gas. However, the sprayed water mist condenses into water droplets, which, under their own gravity, fall to the bottom of the inner wall of the conveying pipe. If the water inside the conveying pipe is not discharged for a long time, it will affect the surface of the conveying pipe, thus causing corrosion of the inner wall of the conveying pipe. The above application can corroborate the defects of the prior art.

[0005] Therefore, we have made improvements and proposed a fine water mist explosion-proof device for gas delivery pipelines. Summary of the Invention

[0006] The purpose of this invention is to address the problem that water mist after spraying easily forms droplets that accumulate inside pipes, causing corrosion.

[0007] To achieve the above-mentioned objectives, the present invention provides a fine water mist explosion-proof device for gas conveying pipelines to improve the aforementioned problems.

[0008] The application is as follows:

[0009] A gas delivery pipeline fine water mist explosion-proof device includes a long pipe and multiple atomizing nozzles. The long pipe has a connecting cavity inside, and the multiple atomizing nozzles are all connected to the connecting cavity. One end of the connecting cavity is connected to a water pipe. The arc surface of the long pipe is provided with a drainage and cleaning mechanism. The drainage and cleaning mechanism includes a leak hole, a cylinder, and a fan blade assembly. The leak hole is opened on the arc surface of the long pipe, the cylinder is inserted into the inside of the leak hole, and the fan blade assembly is located inside the cylinder.

[0010] As a preferred technical solution of this application, the arc surface of the long pipe is provided with a square hole, a rotating plate is rotatably provided inside the square hole, a fixed frame is fixedly connected to the arc surface of the rotating plate, the communicating cavity is slidably connected inside the fixed frame, and the end of the water pipe away from the communicating cavity passes through the rotating plate.

[0011] As a preferred technical solution of this application, a magnet is provided at the top of the cylinder, the magnet is located inside the long tube, a push rod is slidably inserted into the arc surface of the cylinder, one end of the push rod is fixedly connected to a motor, the fan blade assembly is installed on the output end of the motor, and the arc surface of the cylinder is provided with a circular hole and a ventilation hole.

[0012] As a preferred technical solution of this application, the arc surface of the long tube is rotatably connected to a ring, the arc surface of the ring is fixedly connected to a connecting rod, and the end of the connecting rod away from the ring is rotatably connected to the cylinder.

[0013] As a preferred technical solution of this application, the fan blade assembly includes a circular plate, which is fixedly connected to the output end of the motor. The circular plate has multiple slots on its arc surface, and each of the multiple slots has a blade inside.

[0014] As a preferred technical solution of this application, a square frame is fixedly connected inside each of the multiple slots, a pull plate is slidably connected inside the square frame, the pull plate is rotatably connected to the blade, and two rectangular plates are fixedly connected to the side of the rotating plate near the fixed frame.

[0015] As a preferred technical solution of this application, the end face of the circular plate is provided with multiple grooves, and the end faces of the multiple blades are fixedly connected with two vertical rods.

[0016] As a preferred technical solution of this application, the dimensions of the vertical rod are adapted to the dimensions of the groove, and the arc surface of the cylinder is fitted with a sealing gasket.

[0017] As a preferred technical solution of this application, the arc surface of the ring is provided with a stabilizing mechanism, the stabilizing mechanism includes a support rod, the support rod is fixedly connected to the arc surface of the ring, and the arc surface of the support rod is slidably connected to an anti-slip plate.

[0018] As a preferred technical solution of this application, the arc surface of the support rod is fitted with a spring, and the two ends of the spring are fixedly connected to the anti-slip plate and the support rod, respectively.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] In the scheme of this application:

[0021] 1. This application, by setting up an atomizing nozzle, a cylinder, a drain hole, a ring, and a connecting rod, sprays gas inside the pipeline through the atomizing nozzle, which can reduce the concentration of gas and prevent gas explosions to a certain extent. The cylinder and drain hole can drain water inside the pipeline, minimizing the risk of corrosion caused by excessive water inside the pipeline. When maintenance of the atomizing nozzle is required, the rotating plate can flip the atomizing nozzle out of the pipeline. The rotation of the ring and the rotation between the cylinder and the connecting rod can then clean the atomizing nozzle through the bristles on the cylinder. In other words, the cylinder plays a guiding role when draining water and a cleaning role when maintaining the atomizing nozzle.

[0022] 2. This application, by setting up a fan blade assembly, a motor, and a rectangular plate, allows the fan blade assembly to be rotated by the motor when discharging water from the pipe, thus blowing away the gas entering the cylinder and minimizing gas leakage. When maintaining the atomizing nozzle, the position of the fan blade assembly can be adjusted by pushing the push rod, and the rotation of the blades on the fan blade assembly can clamp the rectangular plate, thereby further stabilizing the position of the rotating plate. In other words, the fan blade assembly plays a role in blowing away gas and preventing gas leakage when discharging water, and in stabilizing the rotating plate when maintaining the atomizing nozzle, making the rotating plate less prone to shaking and enabling better cleaning of the atomizing nozzle.

[0023] 3. By using the anti-slip plate and spring, the spring force provides a force to the anti-slip plate, making it adhere more firmly to the pipe, enhancing the stability of the ring and minimizing the possibility of the ring slipping. Attached Figure Description

[0024] Figure 1 A three-dimensional structural schematic diagram of a fine water mist explosion-proof device for a gas conveying pipeline provided in this application;

[0025] Figure 2 This application provides a fine water mist explosion-proof device for gas conveying pipelines. Figure 1 A partial structural diagram of the transformed form;

[0026] Figure 3 A cross-sectional structural diagram of a gas conveying pipeline fine water mist explosion-proof device provided in this application;

[0027] Figure 4 This application provides a fine water mist explosion-proof device for gas conveying pipelines. Figure 1 A schematic diagram of the structure after transformation;

[0028] Figure 5 A schematic diagram showing the disassembled structure of the rotating plate and connecting cavity of a fine water mist explosion-proof device for a gas conveying pipeline provided in this application;

[0029] Figure 6 A schematic diagram of the structure of a cylinder for a fine water mist explosion-proof device for a gas conveying pipeline provided in this application;

[0030] Figure 7 A schematic diagram of the fan blade assembly of a fine water mist explosion-proof device for a gas conveying pipeline provided in this application;

[0031] Figure 8 This application provides a fine water mist explosion-proof device for gas conveying pipelines. Figure 7 Schematic diagram of the structure at point A in the middle;

[0032] Figure 9 This application provides a partial planar structural schematic diagram of the fan blade assembly of a fine water mist explosion-proof device for a gas conveying pipeline.

[0033] The image shows:

[0034] 1. Long pipe; 101. Connecting cavity; 102. Atomizing nozzle; 103. Square hole; 104. Rotating plate; 105. Fixing frame; 106. Water pipe; 2. Drainage and cleaning mechanism; 201. Leakage hole; 202. Cylinder; 203. Magnet block; 204. Round hole; 205. Push rod; 206. Motor; 207. Fan blade assembly; 2071. Round plate; 2072. Slot; 2073. Square frame; 2074. Pull plate; 2075. Blade; 2076. Vertical rod; 2077. Groove; 208. Ventilation hole; 209. Ring; 210. Connecting rod; 211. Rectangular plate; 212. Sealing gasket; 3. Stabilizing mechanism; 301. Support rod; 302. Anti-slip plate; 303. Spring. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0036] As in the background technology, the sprayed water mist can easily form water droplets that accumulate inside the pipe, which can easily cause corrosion inside the pipe.

[0037] To solve this technical problem, the present invention provides a fine water mist explosion-proof device for gas conveying pipelines, which is applied in the field of gas pipeline explosion-proof technology.

[0038] For details, please refer to Figure 1-9 A gas conveying pipeline fine water mist explosion-proof device specifically includes:

[0039] The long tube 1 has multiple atomizing nozzles 102. The long tube 1 has a connecting cavity 101 inside, and the multiple atomizing nozzles 102 are all connected to the connecting cavity 101. One end of the connecting cavity 101 is connected to a water pipe 106. The arc surface of the long tube 1 is provided with a drainage and cleaning mechanism 2. The drainage and cleaning mechanism 2 includes a drain hole 201, a cylinder 202 and a fan blade assembly 207. The drain hole 201 is opened on the arc surface of the long tube 1, the cylinder 202 is inserted into the inside of the drain hole 201, and the fan blade assembly 207 is located inside the cylinder 202.

[0040] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0041] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] Example 1

[0044] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A gas conveying pipeline fine water mist explosion-proof device includes a long pipe 1 and multiple atomizing nozzles 102. The long pipe 1 has a connecting cavity 101 inside, and the multiple atomizing nozzles 102 are all connected to the connecting cavity 101. One end of the connecting cavity 101 is connected to a water pipe 106. The arc surface of the long pipe 1 is provided with a drainage and cleaning mechanism 2. The drainage and cleaning mechanism 2 includes a drain hole 201, a cylinder 202 and a fan blade assembly 207. The drain hole 201 is opened on the arc surface of the long pipe 1. The cylinder 202 is inserted into the inside of the drain hole 201. The arc surface of the cylinder 202 is provided with bristles, and the top of the cylinder 202 is made of iron. The fan blade assembly 207 is located inside the cylinder 202.

[0045] The arc surface of the long pipe 1 has a square hole 103. A rotating plate 104 is rotatably installed inside the square hole 103. The rotating plate 104 and the long pipe 1 are well sealed. A fixed frame 105 is fixedly connected to the arc surface of the rotating plate 104. The connecting cavity 101 is slidably connected inside the fixed frame 105. The connecting cavity 101 and the fixed frame 10 are not easily slid by external force. The end of the water pipe 106 away from the connecting cavity 101 passes through the rotating plate 104. The water pipe 106 and the rotating plate 104 are well sealed.

[0046] A magnet 203 is provided at the top of the cylinder 202. The magnet 203 is located inside the long tube 1. A push rod 205 is slidably inserted into the arc surface of the cylinder 202. The push rod 205 and the cylinder 202 are not easily slipped by external force. A motor 206 is fixedly connected to one end of the push rod 205. The fan blade assembly 207 is installed on the output end of the motor 206. A circular hole 204 and a ventilation hole 208 are opened on the arc surface of the cylinder 202. The circular hole 204 and the ventilation hole 208 are not on the same horizontal line. The height of the circular hole 204 is higher than the position of the ventilation hole 208.

[0047] A circular ring 209 is rotatably connected to the arc surface of the long tube 1. A connecting rod 210 is fixedly connected to the arc surface of the circular ring 209. The end of the connecting rod 210 away from the circular ring 209 is rotatably connected to the cylinder 202. The connecting rod 210 and the circular ring 209 are not easily rotated by external force.

[0048] Water inside the pipe can be drained through the cylinder 202 and the drain hole 201 to minimize the risk of corrosion caused by excessive water inside the pipe. When it is necessary to maintain the atomizing nozzle 102, the atomizing nozzle 102 can be flipped out of the pipe by rotating the rotating plate 104. After the rotation of the ring 209 and the rotation between the cylinder 202 and the connecting rod 210, the atomizing nozzle 102 can be cleaned by the bristles on the cylinder 202.

[0049] Example 2

[0050] The gas conveying pipeline fine water mist explosion-proof device provided in Embodiment 1 is further optimized, specifically, as follows: Figure 7 , Figure 8 and Figure 9 As shown, the fan blade assembly 207 includes a circular plate 2071, which is fixedly connected to the output end of the motor 206. The circular plate 2071 has multiple slots 2072 on its arc surface, and each slot 2072 has a blade 2075 inside, which can be inserted into the slot 2072.

[0051] Multiple slots 2072 are all fixedly connected to a square frame 2073. A pull plate 2074 is slidably connected inside the square frame 2073. The square frame 2073 and the pull plate 2074 are stable by their own friction and are not easy to slide without external force. The pull plate 2074 is rotatably connected to the blade 2075. The pull plate 2074 and the blade 2075 are not easy to slide without external force. Two rectangular plates 211 are fixedly connected to the side of the rotating plate 104 near the fixed frame 105.

[0052] The end face of the circular plate 2071 is provided with multiple grooves 2077, and the end faces of multiple blades 2075 are fixedly connected with two vertical rods 2076.

[0053] The dimensions of the vertical rod 2076 are matched with the dimensions of the groove 2077. The arc surface of the cylinder 202 is fitted with a sealing gasket 212, which can block the contact between the cylinder 202 and the long tube 1, thereby improving the sealing performance to a certain extent.

[0054] The rotation of the fan blade assembly 207 driven by the motor 206 can blow the gas into the cylinder 202, minimizing the risk of gas leakage. When maintaining the atomizing nozzle 102, the position of the fan blade assembly 207 can be adjusted by pushing the push rod 205. Furthermore, the rotation of the blades 2075 on the fan blade assembly 207 can clamp the rectangular plate 211, thereby further stabilizing the position of the rotating plate 104.

[0055] Example 3

[0056] The gas conveying pipeline fine water mist explosion-proof device provided in Embodiment 1 or 2 is further optimized, specifically, as follows: Figure 4 As shown, the circular arc surface of the ring 209 is provided with a stabilizing mechanism 3. The stabilizing mechanism 3 includes a support rod 301, which is fixedly connected to the circular arc surface of the ring 209. The circular arc surface of the support rod 301 is slidably connected to an anti-slip plate 302.

[0057] A spring 303 is fitted onto the arc surface of the support rod 301, and the two ends of the spring 303 are fixedly connected to the anti-slip plate 302 and the support rod 301, respectively.

[0058] The usage process of the fine water mist explosion-proof device for gas conveying pipelines provided by this invention is as follows:

[0059] Working principle: When transporting gas, water enters the connecting cavity 101 from the water pipe 106, and then forms a fine water mist through the atomizing nozzle 102 to spray the gas inside the long pipe 1, thereby reducing the gas concentration. The operator can first insert the cylinder 202 into the leak hole 201. When the magnet 203 contacts the top of the cylinder 202, it will be attracted. As the cylinder 202 moves upward, part of the round hole 204 will be exposed inside the long pipe 1. At this time, the motor 206 will drive the fan blade assembly 207 to rotate, and blow air into the long pipe 1 through the ventilation hole 208. When there is enough water mist inside the long pipe 1 to form water droplets, the water will drip from the round hole 204 into the cylinder 202 and be discharged. If gas passes through the round hole 204, it will be blown away by the air blown by the fan blade assembly 207, thus avoiding gas leakage as much as possible.

[0060] When maintenance and cleaning of the atomizing nozzle 102 are required, the operator can press the rotating plate 104 to rotate it, causing the atomizing nozzle 102 to flip out from inside the long tube 1. Then, the anti-slip plate 302 can be pulled, compressing the spring 303 and causing it to detach from the surface of the long tube 1. Next, the cylinder 202 will detach from the drain hole 201. Then, the ring 209 will be rotated, and under the action of the connecting rod 210, the position of the cylinder 202 will change. Through the rotation between the cylinder 202 and the connecting rod 210, the bristles on the cylinder 202 will eventually adhere to the atomizing nozzle 102. At this point, the anti-slip plate 302 is released, and with the rebound of the spring 303, it will reattach to the long tube 1, securing the ring 209. Then, the push rod 205 is pushed... 05 drives the motor 206 to move, and the fan blade assembly 207 will move out of the round hole 204. Then, according to the position of the rectangular plate 211 on the rotating plate 104, the corresponding two blades 2075 are found. With the sliding of the frame 2073 and the pull plate 2074, the blades 2075 will move out of the slot 2072. With the rotation between the blades 2075 and the pull plate 2074, the two blades 2075 will be folded and clamped on one of the rectangular plates 211, and the two vertical rods 2076 on the blades 2075 will also be engaged in the corresponding grooves 2077, so as to stabilize the rotating plate 104. Then, with the sliding between the fixed frame 105 and the connecting cavity 101, the atomizing nozzle 102 can come into contact with the bristles on the cylinder 202 to achieve the effect of cleaning the atomizing nozzle 102.

[0061] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0062] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention 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 specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A fine water mist explosion-proof device for gas conveying pipelines, comprising a long pipe (1) and multiple atomizing nozzles (102), characterized in that, The long tube (1) has a connecting cavity (101) inside, and multiple atomizing nozzles (102) are connected to the connecting cavity (101). One end of the connecting cavity (101) is connected to a water pipe (106), and the arc surface of the long tube (1) is provided with a drainage and cleaning mechanism (2). The drainage cleaning mechanism (2) includes a drain hole (201), a cylinder (202) and a fan blade assembly (207). The drain hole (201) is opened on the arc surface of the long pipe (1), the cylinder (202) is inserted into the inside of the drain hole (201), and the fan blade assembly (207) is located inside the cylinder (202). The long tube (1) has a square hole (103) on its arc surface. A rotating plate (104) is rotatably connected inside the square hole (103). A fixed frame (105) is fixedly connected to the arc surface of the rotating plate (104). The communicating cavity (101) is slidably connected inside the fixed frame (105). The arc surface of the long tube (1) is rotatably connected to a ring (209), and the arc surface of the ring (209) is fixedly connected to a connecting rod (210). The end of the connecting rod (210) away from the ring (209) is rotatably connected to the cylinder (202). When maintenance of the atomizing nozzle (102) is required, the atomizing nozzle (102) is flipped out of the pipe by rotating the rotating plate (104). After the rotation of the ring (209) and the rotation between the cylinder (202) and the connecting rod (210), the atomizing nozzle (102) can be cleaned by the bristles on the cylinder (202).

2. The gas conveying pipeline fine water mist explosion-proof device according to claim 1, characterized in that, The end of the water pipe (106) away from the connecting cavity (101) passes through the rotating plate (104).

3. The gas conveying pipeline fine water mist explosion-proof device according to claim 1, characterized in that, The top of the cylinder (202) is provided with a magnet block (203), which is located inside the long tube (1); a push rod (205) is slidably inserted into the arc surface of the cylinder (202), and a motor (206) is fixedly connected to one end of the push rod (205); the fan blade assembly (207) is installed on the output end of the motor (206); a circular hole (204) and a ventilation hole (208) are opened on the arc surface of the cylinder (202).

4. The gas conveying pipeline fine water mist explosion-proof device according to claim 3, characterized in that, The fan blade assembly (207) includes a circular plate (2071), which is fixedly connected to the output end of the motor (206). The circular plate (2071) has multiple slots (2072) on its arc surface, and each of the multiple slots (2072) has a blade (2075) inside.

5. The gas conveying pipeline fine water mist explosion-proof device according to claim 4, characterized in that, Each of the slots (2072) has a fixed frame (2073) inside, and a pull plate (2074) is slidably connected inside the frame (2073). The pull plate (2074) is rotatably connected to the blade (2075).

6. The gas conveying pipeline fine water mist explosion-proof device according to claim 4, characterized in that, The end face of the circular plate (2071) is provided with multiple grooves (2077), and the end faces of the multiple blades (2075) are fixedly connected with two vertical rods (2076); the size of the vertical rods (2076) is adapted to the size of the grooves (2077), and the arc surface of the cylinder (202) is fitted with a sealing gasket (212).

7. The gas conveying pipeline fine water mist explosion-proof device according to claim 1, characterized in that, The circular surface of the ring (209) is provided with a stabilizing mechanism (3). The stabilizing mechanism (3) includes a support rod (301). The support rod (301) is fixedly connected to the circular surface of the ring (209). The circular surface of the support rod (301) is slidably connected to an anti-slip plate (302). The circular surface of the support rod (301) is fitted with a spring (303). The two ends of the spring (303) are fixedly connected to the anti-slip plate (302) and the support rod (301) respectively.

8. The gas conveying pipeline fine water mist explosion-proof device according to claim 5, characterized in that, Two rectangular plates (211) are fixedly connected to the side of the rotating plate (104) near the fixed frame (105).