An automatic fire extinguishing device for combustible gas pipeline high place

Abstract

The utility model relates to pipeline fire extinguishing technical field, specifically disclose a kind of for combustible gas pipeline high place automatic fire extinguishing device, including steam ring pipe, connecting pipe, self-adapting anti-blocking structure, mounting structure and trigger structure;Steam ring pipe is sleeved in the peripheral of pipe body connecting place and is communicated with external steam system by connecting pipe, its inboard annular array has steam blast hole;Self-adapting anti-blocking structure is movably arranged at each steam blast hole, closed blast hole under normal state, steam pressure can be opened under the action;Mounting structure is detachably arranged on pipe body to fix steam ring pipe;Trigger structure includes fire detector corresponding with pipe body connecting place and arranged on mounting structure, and solenoid valve arranged on connecting pipe, according to command on-off steam.The utility model integrates automatic detection, reliable anti-blocking and stable installation, effectively solve the problem of existing technology response delay, easy to block and high-altitude installation maintenance inconvenience, realize the automatic, fast, reliable rescue of high-altitude pipeline fire.

Description

Technical Field

[0001] This utility model relates to the field of pipeline fire extinguishing technology, specifically to an automatic fire extinguishing device for high-altitude combustible gas pipelines. Background Technology

[0002] When transporting flammable gases, chemical pipelines pose a risk of leakage at pipeline connections. Some highly flammable and explosive gases can quickly generate open flames after leakage, which can easily lead to fires or even explosions if not dealt with promptly. Therefore, specialized fire extinguishing measures are required for protection.

[0003] Some dedicated fire extinguishing devices for pipe flanges have already appeared in the existing technology. For example, Chinese utility model patent CN209790682U discloses a steam fire extinguishing ring. This device forms a ring structure by combining a first ring pipe and a second ring pipe, and uses multiple steam pipes and nozzles installed on it to guide steam to the gap of the pipe flange to achieve the fire extinguishing function.

[0004] However, the anti-clogging structure of the existing technology is not reliable enough in the actual complex industrial environment. The filter screen is prone to failure due to oil stains or high temperature corrosion, which may even aggravate the clogging of the nozzle. More importantly, the device usually relies on the operator to manually open the steam valve remotely after discovering the fire. This process has a response delay. At the same time, if a fire breaks out in a high-altitude pipeline, it is difficult to detect in time, resulting in an untimely fire extinguishing response and posing a safety hazard. Utility Model Content

[0005] In view of the technical problems in the prior art, this utility model provides an automatic fire extinguishing device for high-altitude combustible gas pipelines, aiming to solve the problems of existing fire extinguishing devices relying on manual response, delayed detection of fires at high altitudes, and insufficient reliability of anti-clogging structures leading to safety hazards.

[0006] An automatic fire extinguishing device for high-altitude combustible gas pipelines, used for fire extinguishing at pipe connections, includes a steam loop pipe, a connecting pipe, an adaptive anti-clogging structure, an installation structure, and a triggering structure. The steam ring pipe is sleeved around the pipe body connection and is connected to the external steam system through a connecting pipe. Steam nozzles are arranged in a ring array on the inner side of the steam ring pipe corresponding to the pipe body connection. The adaptive anti-clogging structure includes multiple structures, which are movably disposed at each steam nozzle. The adaptive anti-clogging structure closes the steam nozzle in the non-working state and can be opened under steam pressure. The installation structure is detachably mounted on the pipe body and detachably connected to the steam ring pipe; The triggering structure includes a fire detector and a solenoid valve. The fire detector is mounted on the installation structure and corresponds to the connection point of the pipe body. The fire detector is electrically connected to an external control system. The solenoid valve is mounted on the connecting pipe and is electrically connected to an external control system. It is used to switch steam on and off according to control commands.

[0007] Optionally, the adaptive anti-clogging structure includes a nozzle, a baffle, and a pin, wherein, One end of the nozzle is connected to the steam nozzle, and the other end is the steam outlet facing the pipe body connection. The baffle is located at the end of the nozzle facing the connection to the pipe body. The baffle is hinged to the steam outlet of the nozzle via the pin and can naturally droop under gravity to cover the steam outlet; the baffle is configured to rotate around the pin under the drive of steam pressure to open the steam outlet when steam is introduced.

[0008] Optionally, the adaptive anti-blocking structure further includes a torsion spring, which is sleeved on the pin and provides a preload force to the baffle in the closing direction.

[0009] Optionally, the mounting structure includes a first clamp and a mounting bracket, wherein, The first clamp is fitted onto the pipe body and located at the bottom of the steam ring pipe; The mounting bracket comprises three brackets arranged in a circular array on the outer wall of the first clamp, and the top of the mounting bracket is connected to the steam ring pipe.

[0010] Optionally, an annular limiting groove is provided on the outer wall of the pipe body corresponding to the first clamp to prevent the first clamp from slipping off.

[0011] Optionally, the mounting structure further includes a mounting plate and a U-shaped clip, wherein, The mounting plate is fixedly mounted on the top of the mounting bracket, and the steam ring pipe is supported on the mounting plate; The U-shaped clip is positioned above the steam ring pipe, and its two ends are detachably connected to the mounting plate, thereby pressing and fixing the steam ring pipe to the mounting plate.

[0012] Optionally, the mounting structure further includes a second clamp and a support rod, wherein, The second clamp is fitted onto the pipe body and is located at the bottom of the first clamp; The support rods include three rods arranged in a circular array around the second clamp. The two ends of the support rods are respectively hinged to the mounting bracket on the first clamp and the second clamp to form a stable support frame.

[0013] Optionally, the fire detector includes a detector body and a mounting block, wherein, The mounting block is mounted on the mounting bracket; The detector body is located on the side of the mounting block facing the tube connection.

[0014] Optionally, the steam ring pipe is formed by connecting multiple arc-shaped pipe segments end to end in a detachable manner.

[0015] Optionally, the ends of the arc-shaped pipe sections are provided with connecting flanges, and adjacent arc-shaped pipe sections are fastened together through corresponding connecting flanges.

[0016] Compared with the prior art, the automatic fire extinguishing device for high-altitude combustible gas pipelines provided by this utility model has the following advantages: (1) By setting an adaptive anti-clogging structure consisting of a nozzle, baffle and pin, the automatic opening and closing of the nozzle is achieved by a purely mechanical method. When the nozzle is not in operation, it relies on gravity to tightly cover the nozzle and effectively isolate external impurities. When extinguishing a fire, it can be opened by the steam pressure instantly to ensure that the steam flows smoothly. Its structure is simple and does not require a filter screen, which fundamentally avoids the risk of fire extinguishing failure caused by clogging and significantly improves reliability.

[0017] (2) By placing the fire detector near the leak point and linking it with the control system and solenoid valve, the automatic detection of fire and the automatic execution of fire extinguishing commands are realized. Once a fire is detected, the system can automatically start steam fire extinguishing within seconds. The response speed is extremely fast, which completely eliminates the safety hazards caused by untimely operation by personnel. It is especially suitable for high-altitude pipeline environments that are difficult for people to access.

[0018] (3) Through the unique installation structure, such as the combination of clamps, mounting brackets, support rods and U-shaped clips, a detachable and stable three-dimensional frame is formed, which effectively solves the problem of stability of high-altitude installation; at the same time, the steam ring pipe is composed of multiple arc-shaped pipe sections connected by flanges, which allows the entire device to be assembled below the pipe first, and then the whole device to be fitted onto the pipe connection for final fixation, or the pipe sections to be spliced ​​one by one at high altitude, which greatly facilitates construction and subsequent inspection and maintenance in complex working conditions such as high altitude and narrow space, and is highly practical. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the installation of an automatic fire extinguishing device for high-altitude combustible gas pipelines according to the present invention; Figure 2 This is a schematic diagram showing the disassembly of the automatic fire extinguishing device for high-altitude combustible gas pipelines according to this utility model. Figure 3 This is a schematic diagram showing the installation structure and steam loop of an automatic fire extinguishing device for high-altitude combustible gas pipelines according to this utility model. Figure 4 This is a schematic diagram of an adaptive anti-clogging structure for an automatic fire extinguishing device for high-altitude combustible gas pipelines according to the present invention. Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Pipe body; 101. Annular limiting groove; 2. Steam ring pipe; 201. Steam nozzle; 21. Arc-shaped pipe section; 22. Connecting flange; 3. Connecting pipe; 4. Adaptive anti-clogging structure; 41. Nozzle; 42. Baffle; 43. Pin; 44. Torsion spring; 5. Mounting structure; 51. First clamp; 52. Mounting bracket; 53. Mounting plate; 54. U-shaped clip; 55. Second clamp; 56. Support rod; 6. Triggering structure; 61. Fire detector; 611. Detector body; 612. Mounting block; 62. Solenoid valve. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0023] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0026] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0027] Please see Figure 1-5 This application proposes an automatic fire extinguishing device for high-altitude combustible gas pipelines, used for fire extinguishing at the connection of the pipe body 1, comprising a steam ring pipe 2, a connecting pipe 3, an adaptive anti-clogging structure 4, an installation structure 5, and a triggering structure 6.

[0028] like Figure 1 As shown, the steam ring pipe 2 is sleeved around the connection of the pipe body 1 and is connected to the external steam system through the connecting pipe 3. Steam nozzles 201 are arranged in a ring array on the inner side of the steam ring pipe 2 corresponding to the connection of the pipe body 1. The adaptive anti-clogging structure 4 includes multiple structures, which are movably installed at each steam nozzle 201. The adaptive anti-clogging structure 4 closes the steam nozzles 201 when not in operation, but can be opened under steam pressure. The mounting structure 5 is detachably installed on the pipe body 1 and detachably connected to the steam ring pipe 2. The triggering structure 6 includes a fire detector 61 and a solenoid valve 62. The fire detector 61 is installed on the mounting structure 5 and corresponds to the connection of the pipe body 1. The fire detector 61 is electrically connected to the external control system. The solenoid valve 62 is installed on the connecting pipe 3 and is electrically connected to the external control system. It is used to turn the steam on and off according to the control command.

[0029] Specifically, the steam loop 2, adaptive anti-clogging structure 4, installation structure 5, and triggering structure 6 are integrated into a single organic whole. The triggering structure 6 enables complete automation of the fire extinguishing process. The fire detector 61 monitors potential leak points at close range. Once an open flame is detected, the signal is immediately transmitted to the external control system. The control system then instructs the solenoid valve 62 to open, allowing steam to quickly flow into the steam loop 2. This rapid response solves the problem of response delay caused by relying on manual detection and operation in high-altitude pipeline fires, achieving fire extinguishing within seconds and greatly improving safety and reliability. At the same time, the adaptive anti-clogging structure 4 ensures that the steam nozzle 201 is in a sealed state under normal conditions, preventing impurities from clogging it and providing double protection for the reliability of automatic fire extinguishing. The external control system and control method used here are conventional technologies in the existing field and will not be described in detail here.

[0030] In some embodiments, such as Figure 4-5 As shown, the adaptive anti-clogging structure 4 includes a nozzle 41, a baffle 42, and a pin 43. One end of the nozzle 41 is connected to the steam nozzle 201, and the other end is the steam outlet facing the connection point of the pipe body 1. The baffle 42 is located at the end of the nozzle 41 facing the connection point of the pipe body 1. The baffle 42 is hinged to the steam outlet of the nozzle 41 by the pin 43 and can naturally droop under the action of gravity to cover the steam outlet. The baffle 42 is configured to rotate around the pin 43 under the drive of steam pressure to open the steam outlet when steam is introduced.

[0031] Specifically, this embodiment embodies a preferred mechanical scheme for the adaptive anti-clogging structure 4. This structure utilizes gravity to achieve normal closure and steam pressure to achieve opening, requiring no electronic control and is inherently safe and reliable. The baffle 42 is hinged by the pin 43, with a simple structure and sensitive operation. When the device is not activated, the baffle 42 naturally covers the steam outlet under the action of gravity, effectively isolating dust, oil, and even insulation material debris from the construction site. This fundamentally solves the problem in the prior art where the filter screen is prone to failure or even worsening of clogging due to oil adhesion and corrosion. When the solenoid valve 62 is opened, steam rushes into the nozzle 41, and the pressure quickly accumulates, pushing the baffle 42 to rotate around the pin 43 and open. The steam can then be sprayed unobstructed towards the fire source, ensuring the instantaneous unobstructed flow of the fire extinguishing channel.

[0032] In some embodiments, such as Figure 5 As shown, the adaptive anti-blocking structure 4 also includes a torsion spring 44, which is sleeved on the pin 43 and provides a preload force to the baffle 42 in the closing direction.

[0033] Specifically, this embodiment is a further optimization of the adaptive anti-clogging structure 4; with the addition of the torsion spring 44, the preload provided by it, together with gravity, makes the seal of the baffle 42 tighter, which can effectively resist accidental opening or poor sealing caused by slight vibration of the pipeline. This is particularly beneficial for ensuring the anti-clogging reliability of the device during long-term operation; at the same time, the preload ensures that the baffle 42 will only open when a certain steam pressure is reached, avoiding accidental steam leakage and making the device's operation more precise and reliable.

[0034] In some embodiments, such as Figure 2-3 As shown, the installation structure 5 includes a first clamp 51 and an installation bracket 52. The first clamp 51 is sleeved on the pipe body 1 and located at the bottom of the steam ring pipe 2. The installation bracket 52 includes three brackets, which are arranged in a ring array on the outer side wall of the first clamp 51. The top of the installation bracket 52 is connected to the steam ring pipe 2.

[0035] Specifically, this embodiment provides a basic scheme for the installation structure 5; the first clamp 51, as the main load-bearing component, provides a stable foundation for the entire device by clamping it onto the pipe body 1. The three ring array mounting brackets 52 extend outward from the first clamp 51, jointly supporting the steam ring pipe 2 to form a stable three-point support, avoiding welding on the equipment body or tall pipes, realizing a completely detachable connection, greatly facilitating the installation and subsequent maintenance of the device, and is particularly suitable for construction in high-altitude environments.

[0036] In some embodiments, such as Figure 2 As shown, an annular limiting groove 101 is provided on the outer wall of the pipe body 1 at the location corresponding to the first clamp 51, which is used to prevent the first clamp 51 from slipping off.

[0037] Specifically, this embodiment significantly improves the stability and safety of the installation through a simple structural improvement; the annular limiting groove 101 cooperates with the first clamp 51 to form a mechanical limit, which effectively prevents the device from slipping or even falling along the pipeline axis due to long-term vibration or accidental collision. This design is especially important for the safe operation of vertical pipelines or high-altitude environments, and enhances the long-term reliability of the entire fire extinguishing device.

[0038] In some embodiments, such as Figure 2-3 As shown, the mounting structure 5 also includes a mounting plate 53 and a U-shaped clip 54. The mounting plate 53 is fixedly mounted on the top of the mounting bracket 52, and the steam ring pipe 2 is supported on the mounting plate 53. The U-shaped clip 54 spans above the steam ring pipe 2, and its two ends are detachably connected to the mounting plate 53, thereby pressing and fixing the steam ring pipe 2 onto the mounting plate 53.

[0039] Specifically, this embodiment refines the method for fixing the steam ring pipe 2; the mounting plate 53 provides a flat support surface for the steam ring pipe 2, and the U-shaped clip 54 clamps the steam ring pipe 2 from above and below, and connects it to the mounting plate 53 by bolts, etc., to form a reliable constraint. This detachable connection method of "bottom support and top clamp" not only ensures that the steam ring pipe 2 is firmly fixed and can withstand the reaction force that may be generated when steam is injected, but also makes disassembly and maintenance extremely convenient. The entire steam ring pipe 2 can be lifted away simply by loosening the U-shaped clip 54, which reflects the convenience of modular design.

[0040] In some embodiments, such as Figure 1 As shown, the mounting structure 5 also includes a second clamp 55 and a support rod 56. The second clamp 55 is sleeved on the pipe body 1 and located at the bottom of the first clamp 51. The support rod 56 includes three rods, which are arranged in a circular array around the second clamp 55. The two ends of the support rod 56 are respectively hinged to the mounting bracket 52 on the first clamp 51 and the second clamp 55 to form a stable support frame.

[0041] Specifically, this embodiment constructs a more stable three-dimensional support frame; by adding a second clamp 55 and a support rod 56 connecting the upper and lower clamps, the single-point clamp support is transformed into a stable spatial triangular support structure, which greatly enhances the anti-sway and anti-wind load capacity of the entire device, and is particularly suitable for occasions with large pipe diameter, high height or obvious environmental vibration; the hinged connection at both ends of the support rod 56 allows the device to adapt to the thermal expansion and contraction of the pipeline within a certain range, avoiding excessive installation stress and further ensuring the safety of long-term use.

[0042] In some embodiments, such as Figure 2-3 As shown, the fire detector 61 includes a detector body 611 and a mounting block 612. The mounting block 612 is mounted on the mounting bracket 52. The detector body 611 is located on the side of the mounting block 612 facing the connection of the pipe body 1.

[0043] Specifically, this embodiment optimizes the installation of the fire detector 61; the detector body 611 is fixed on the mounting bracket 52 by a special mounting block 612, realizing the integrated installation of the detector and the fire extinguishing device body, ensuring that the detector body 611 can always be accurately aligned with the pipe body 1 connection point most prone to leakage, shortening the response time of fire detection and improving the accuracy of detection; the integrated installation also avoids the trouble of laying a separate detector bracket, simplifies the overall structure, and makes the installation more convenient and aesthetically pleasing.

[0044] In some embodiments, such as Figure 1 , Figure 3 As shown, the steam ring pipe 2 is formed by connecting multiple arc-shaped pipe segments 21 end to end in a detachable manner.

[0045] Specifically, the key to this embodiment lies in the detachable design of the steam ring pipe 2. For high-altitude pipelines, especially where space is limited at flange connections, it is difficult to fit an integral ring pipe. By designing the steam ring pipe 2 into multiple arc-shaped pipe segments 21, most of the assembly work can be completed below the pipeline, and then the segments can be hoisted to the high altitude for splicing; or the segments can be installed directly at the high altitude, which greatly reduces the requirements for hoisting space and precision, solves the core problem of fire extinguishing ring installation on high equipment, and has very high practical value.

[0046] In some embodiments, such as Figure 3 As shown, the end of the arc-shaped pipe section 21 is provided with a connecting flange 22, and adjacent arc-shaped pipe sections 21 are fastened together through the corresponding connecting flange 22.

[0047] This embodiment provides a preferred connection method between the arc-shaped pipe sections 21; the connection is made using connecting flanges 22, which has good sealing performance, high connection strength, and can withstand the working pressure of the steam pipeline; the flange connection is a standardized detachable connection, which can be tightened and disassembled using ordinary tools, making the operation simple, reliable, and very convenient for on-site installation and future partial replacement or maintenance of the steam ring pipe 2.

[0048] 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. An automatic fire extinguishing device for high-altitude combustible gas pipelines, used for fire extinguishing at the connection of the pipe body (1), characterized in that, It includes a steam ring pipe (2), a connecting pipe (3), an adaptive anti-clogging structure (4), an installation structure (5), and a triggering structure (6), among which, The steam ring pipe (2) is sleeved around the connection of the pipe body (1) and is connected to the external steam system through the connecting pipe (3). The inner side of the steam ring pipe (2) is provided with a ring array of steam nozzles (201) corresponding to the connection of the pipe body (1). The adaptive anti-clogging structure (4) includes multiple structures, which are movably disposed at each steam nozzle (201). The adaptive anti-clogging structure (4) closes the steam nozzle (201) in the non-working state and can be opened under steam pressure. The installation structure (5) is detachably mounted on the pipe body (1) and detachably connected to the steam ring pipe (2); The triggering structure (6) includes a fire detector (61) and a solenoid valve (62). The fire detector (61) is mounted on the mounting structure (5) and corresponds to the connection point of the pipe body (1). The fire detector (61) is electrically connected to the external control system. The solenoid valve (62) is mounted on the connecting pipe (3) and is electrically connected to the external control system. It is used to turn steam on and off according to control commands.

2. The automatic fire extinguishing device for high-altitude combustible gas pipelines according to claim 1, characterized in that, The adaptive anti-clogging structure (4) includes a nozzle (41), a baffle (42), and a pin (43), wherein, One end of the nozzle (41) is connected to the steam nozzle (201), and the other end is the steam outlet facing the connection of the pipe body (1); The baffle (42) is located at the end of the nozzle (41) that is connected to the pipe body (1); The baffle (42) is hinged to the steam outlet of the nozzle (41) via the pin (43) and can naturally droop under gravity to cover the steam outlet; the baffle (42) is configured to rotate around the pin (43) under the drive of steam pressure to open the steam outlet when steam is introduced.

3. The automatic fire extinguishing device for high-altitude combustible gas pipelines according to claim 2, characterized in that, The adaptive anti-blocking structure (4) also includes a torsion spring (44), which is sleeved on the pin (43) and provides a preload force to the baffle (42) in the closing direction.

4. The automatic fire extinguishing device for high-altitude combustible gas pipelines according to claim 1, characterized in that, The mounting structure (5) includes a first clamp (51) and a mounting bracket (52), wherein, The first clamp (51) is fitted onto the pipe body (1) and located at the bottom of the steam ring pipe (2); The mounting bracket (52) comprises three, arranged in a ring array on the outer wall of the first clamp (51), and the top of the mounting bracket (52) is connected to the steam ring pipe (2).

5. An automatic fire extinguishing device for high-altitude combustible gas pipelines according to claim 4, characterized in that, The outer wall of the tube body (1) is provided with an annular limiting groove (101) corresponding to the first clamp (51) to prevent the first clamp (51) from slipping off.

6. An automatic fire extinguishing device for high-altitude combustible gas pipelines according to claim 4, characterized in that, The mounting structure (5) further includes a mounting plate (53) and a U-shaped clip (54), wherein, The mounting plate (53) is fixedly mounted on the top of the mounting bracket (52), and the steam ring pipe (2) is supported on the mounting plate (53); The U-shaped clip (54) is positioned above the steam ring pipe (2), and its two ends are detachably connected to the mounting plate (53), thereby pressing and fixing the steam ring pipe (2) onto the mounting plate (53).

7. An automatic fire extinguishing device for high-altitude combustible gas pipelines according to claim 4, characterized in that, The mounting structure (5) also includes a second clamp (55) and a support rod (56), wherein, The second clamp (55) is fitted onto the pipe body (1) and is located at the bottom of the first clamp (51); The support rod (56) comprises three rods arranged in a circular array around the second clamp (55). The two ends of the support rod (56) are respectively hinged to the mounting bracket (52) on the first clamp (51) and the second clamp (55) to form a stable support frame.

8. An automatic fire extinguishing device for high-altitude combustible gas pipelines according to claim 4, characterized in that, The fire detector (61) includes a detector body (611) and a mounting block (612), wherein, The mounting block (612) is mounted on the mounting bracket (52); The detector body (611) is located on the side of the mounting block (612) facing the connection of the tube body (1).

9. An automatic fire extinguishing device for high-altitude combustible gas pipelines according to any one of claims 1-8, characterized in that, The steam ring pipe (2) is formed by connecting multiple arc-shaped pipe segments (21) end to end in a detachable manner.

10. An automatic fire extinguishing device for high-altitude combustible gas pipelines according to claim 9, characterized in that, The ends of the arc-shaped pipe section (21) are provided with connecting flanges (22), and adjacent arc-shaped pipe sections (21) are fastened together by corresponding connecting flanges (22).

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