A gas extinguishing system pipe network connection detection device

Abstract

The utility model relates to fire fighting technical field discloses a kind of gas extinguishing system pipe network connection detection device, discloses a kind of gas extinguishing system pipe network connection detection device, including collecting flow pipeline, multiple root connection's cloth flow pipeline, collecting flow pipe is equipped with multiple groups of fire extinguishing agent storage bottle, cloth flow pipe is equipped with selection valve and the drive gas bottle controlled by it, drive gas bottle is connected starting pipeline, collecting flow pipe is connected with the detection pipeline of gas, liquid punch device, starting pipe has first stop valve, cloth flow pipe is connected with pressure measuring pipeline, pressure measuring pipe has first pressure gauge and second stop valve.The utility model can select detection mode according to season, winter gas, summer liquid, improve adaptability.Detecting collecting flow pipe directly using selection valve initial closed state, cooperate two stop valves, compare through first pressure gauge and predetermined pressure, quickly locate leakage point, solve the detection problem of multiple pipeline and elbow.

Description

Technical Field

[0001] This utility model relates to the field of fire protection technology, specifically to a gas extinguishing system pipeline connection detection device. Background Technology

[0002] In various important locations, gaseous fire suppression systems are widely used due to their high efficiency, environmental friendliness, safety, and lack of secondary pollution. A typical gaseous fire suppression system mainly consists of an extinguishing agent storage cylinder assembly, a propellant gas cylinder assembly, a controller, a selector valve, nozzles, piping, and accessories.

[0003] Taking common high-pressure carbon dioxide fire extinguishing systems, internally pressurized heptafluoropropane fire extinguishing systems, and inert gas fire extinguishing systems as examples, when a fire occurs in the protected area, smoke, high temperature, and light radiation will be detected by smoke detectors, heat detectors, and light detectors. These detectors convert these fire signals into electrical signals and transmit them to the alarm and fire extinguishing controller. Upon receiving the signal, the controller automatically issues an audible and visual alarm and, after logical judgment, activates the linkage device. After a preset delay time, a system activation signal is issued. This signal triggers the container valve on the driving gas cylinder group, releasing the driving gas.

[0004] The driving gas opens both the selector valve leading to the protected area where the fire has occurred and the container valve of the extinguishing agent storage cylinder group. The extinguishing agent from each cylinder group is collected in a manifold via connecting pipes, and then passes through the selector valve to the nozzles installed in the protected area, thus releasing the extinguishing agent to extinguish the fire. Simultaneously, a signal feedback device installed on the pipeline activates, transmitting a signal back to the controller, which then activates the release warning lights and alarm bells outside the protected area to alert personnel.

[0005] In existing gas suppression systems, the manifolds often connect to numerous distribution pipes. These distribution pipes, designed to accommodate different protected zone layouts, often feature bends, turns, and connections, making airtightness testing of the network connections extremely difficult. Because loop inspections are not possible, it's challenging to conduct comprehensive airtightness checks on every bend and connection point of each distribution pipe. In actual operation, the large number of distribution pipes not only increases the workload but also raises the probability of seal failure or minor leaks due to stress concentration at bends. Traditional inspection methods can only provide a general overview and cannot accurately pinpoint the specific distribution pipe causing the problem, easily overlooking potential issues.

[0006] Regarding testing equipment, existing systems lack specialized testing equipment for pipeline connections and cannot simulate the pressure conditions during extinguishing agent discharge to test the pipeline network. For multiple distribution pipelines with bends, the extinguishing agent experiences pressure fluctuations during flow due to the bends. Existing testing methods cannot simulate this dynamic pressure environment and struggle to detect potential leaks caused by pressure surges at bends. For example, in high-pressure carbon dioxide fire extinguishing systems, the localized high pressure created at bends in the distribution pipeline during extinguishing agent discharge can cause minor defects in connections to rupture, which existing testing methods cannot detect in advance. Utility Model Content

[0007] The purpose of this invention is to provide an effective and rapid detection device for the airtightness of gas extinguishing system pipeline connections, addressing the above-mentioned problems.

[0008] To achieve the above objectives, this utility model discloses a gas extinguishing system pipeline connection detection device, including a manifold and multiple distribution pipes connected to the manifold. Multiple sets of extinguishing agent storage cylinders are installed on the manifold. Each distribution pipe is equipped with a selector valve and a driving gas cylinder that controls the switching of the selector valve. The driving gas cylinder is equipped with a starting pipe that connects to the selector valve and controls the switching of each set of extinguishing agent storage cylinders. The structural features are: a first detection pipe and a second detection pipe are connected to the manifold; a gas purging device is installed on the first detection pipe; a liquid purging device is installed on the second detection pipe; a first shut-off valve is installed on the starting pipe in front of the driving gas cylinder; a pressure measuring pipe is connected to each distribution pipe; a first pressure gauge is installed on the pressure measuring pipe; and a second shut-off valve is installed on the distribution pipe behind the first pressure gauge on the pressure measuring pipe.

[0009] With the above structure, the first and second detection pipelines are connected via a manifold, each equipped with a gas ramming device and a liquid ramming device, allowing for flexible selection of the detection method based on seasonal temperature differences. In winter, lower temperatures can cause liquids to freeze, so using a gas ramming device ensures smooth testing. In summer, higher temperatures and better liquid flow allow for more accurate testing of the pipeline network's sealing, significantly improving the adaptability and accuracy of testing in different environments. Furthermore, since the selector valve in the initial state of the distribution pipeline is closed, no additional operation is required during testing; the manifold can be directly tested, eliminating tedious preliminary preparations and improving testing efficiency. The first shut-off valve on the start-up pipeline and the second shut-off valve on the pressure testing pipeline work together. When the drive gas cylinder opens the selector valve via an electrical signal, closing the first shut-off valve prevents pressure interference in the start-up pipeline, while closing the second shut-off valve ensures stable pressure in the pressure testing pipeline. At this point, by comparing the value of the first pressure gauge on the pressure measuring pipeline with the predetermined pressure value inside the pipe, it is possible to quickly determine which specific distribution pipeline has a leak, thus solving the problem of difficulty in detecting multiple distribution pipelines and bends.

[0010] Preferably, the gas ramming device includes an air compressor installed at the inlet of the first detection pipeline, and a third shut-off valve installed on the first detection pipeline. A second pressure gauge is installed on the first detection pipeline between the third shut-off valve and the air compressor. By using the air compressor as the core component of the gas ramming device on the first detection pipeline, the required gas pressure can be stably provided to meet the detection needs of different pressure levels. The third shut-off valve can flexibly control the opening and closing of the first detection pipeline, facilitating the closure of the pipeline when not in use. The second pressure gauge located between the third shut-off valve and the air compressor can monitor the pressure value output by the gas ramming device in real time, ensuring that the gas pressure in the input manifold meets the detection requirements, guaranteeing the accuracy of the detection results, and allowing operators to clearly understand the gas ramming status and adjust parameters in a timely manner.

[0011] Preferably, the liquid stamping device includes a water pipe connector located at the input end of the second detection pipeline, a fourth shut-off valve located on the second detection pipeline, a third pressure gauge located on the second detection pipeline between the fourth shut-off valve and the water pipe connector, and a booster pump located on the second detection pipeline between the third pressure gauge and the water pipe connector. The water pipe connector facilitates connection to an external water source, providing a sufficient liquid supply for the liquid stamping. The fourth shut-off valve effectively controls the opening and closing of the second detection pipeline, allowing the liquid stamping channel to be opened or closed according to testing requirements. The second pressure gauge monitors pressure changes in real time during the liquid stamping process, allowing operators to accurately understand the liquid pressure and ensure it remains within a reasonable range, preventing damage to the pipeline due to excessive pressure or affecting testing results due to insufficient pressure. The booster pump increases the liquid pressure as needed, ensuring sufficient driving force for the liquid within the pipeline. Even with long or winding distribution pipelines, stamping testing can be successfully completed, improving the liquid stamping device's ability to test complex pipelines.

[0012] Preferably, the activation pipeline includes a first control pipeline with one end connected to the driving gas cylinder and the other end connected to the selector valve activation air passage, and a second control pipeline with one end connected to the selector valve activation air passage and the other end connected to the extinguishing agent storage cylinder container valve. This activation pipeline, divided into a first control pipeline and a second control pipeline, has a clear division of labor, enabling more precise and orderly control of the selector valve and the extinguishing agent storage cylinder container valve by the driving gas cylinder. The first control pipeline connects the driving gas cylinder and the selector valve activation air passage, quickly transmitting the driving force of the driving gas cylinder to the selector valve, ensuring timely opening of the selector valve. The second control pipeline connects the selector valve activation air passage and the extinguishing agent storage cylinder container valve, controlling the opening and closing of the extinguishing agent storage cylinder container valve simultaneously with the opening of the selector valve, achieving synergy between the actions of the selector valve and the extinguishing agent storage cylinder container valve, ensuring a rapid response of the fire extinguishing system when needed.

[0013] Preferably, the first shut-off valve is located on the second control line of the starting line, and a first check valve is installed on the second control line between the first shut-off valve and the selector valve. By placing the first shut-off valve on the second control line of the starting line, the control of the starting line on the extinguishing agent storage cylinder container valve can be more accurately cut off. When testing the distribution line, it effectively avoids interference from accidental opening of the extinguishing agent storage cylinder container valve. The first check valve on the second control line between the first shut-off valve and the selector valve can strictly limit the direction of gas flow, prevent gas backflow from affecting the normal operation of the starting line, and ensure the unidirectionality and stability of the starting signal transmission.

[0014] Preferably, each group of extinguishing agent storage cylinders includes two or more extinguishing agent storage cylinders connected to the activation pipeline. Each extinguishing agent storage cylinder is equipped with a high-pressure metal hose connected to a manifold, and the high-pressure metal hose is equipped with a second one-way valve. Having at least two extinguishing agent storage cylinders connected to the activation pipeline in each group improves the safety and reliability of the fire extinguishing system. If one extinguishing agent storage cylinder malfunctions, the other can continue to operate, ensuring the fire extinguishing effect.

[0015] Preferably, a selector valve is installed at the end of the distribution pipe near the collection pipe, and a pressure relief valve is installed on the collection pipe. By installing the selector valve at the end of the distribution pipe near the collection pipe, the on / off state between the distribution pipe and the collection pipe can be precisely controlled. This facilitates individual control of the distribution pipe during testing, enabling targeted testing of a single distribution pipe in conjunction with pressure measurement and other operations. The pressure relief valve on the collection pipe automatically opens to release pressure when the pressure inside the collection pipe exceeds the safe range, preventing damage to the collection pipe and related components due to excessive pressure.

[0016] In summary, the beneficial effects of this utility model are as follows: This utility model can effectively and quickly detect the airtightness of pipeline networks. It connects the first and second detection pipelines via a manifold, each equipped with a gas pressurization device and a liquid pressurization device, allowing for flexible selection of the detection method based on seasonal temperature differences. In winter, when temperatures are low and liquids are prone to freezing, the use of a gas pressurization device ensures smooth testing. In summer, when temperatures are high and liquids have good fluidity, the use of a liquid pressurization device allows for more accurate detection of pipeline network tightness, significantly improving the adaptability and accuracy of testing in different environments. Furthermore, since the selection valve in the initial state of the distribution pipeline is closed, no additional operation is required during testing; the manifold can be directly tested without tedious preliminary preparations, improving testing efficiency. The first shut-off valve on the starting pipeline and the second shut-off valve on the pressure measuring pipeline work together. When the driving gas cylinder is opened by an electrical signal, closing the first shut-off valve prevents pressure in the starting pipeline from interfering with the detection, while closing the second shut-off valve ensures stable pressure in the pressure measuring pipeline. At this point, by comparing the value of the first pressure gauge on the pressure measuring pipeline with the predetermined pressure value inside the pipe, it is possible to quickly determine which specific distribution pipeline has a leak, thus solving the problem of difficulty in detecting multiple distribution pipelines and bends. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a single flow distribution pipe of this utility model.

[0019] In the diagram: 1. Manifold; 2. Distribution line; 3. Extinguishing agent storage bottle; 4. Selector valve; 5. Drive gas cylinder; 6. Start-up line; 7. First detection line; 8. Second detection line; 9. First shut-off valve; 10. Pressure measuring line; 11. First pressure gauge; 12. Second shut-off valve; 13. Air compressor; 14. Third shut-off valve; 15. Second pressure gauge; 16. Water pipe connector; 17. Fourth shut-off valve; 18. Second pressure monitoring gauge; 19. Booster pump; 20. First control line; 21. Second control line; 22. First check valve; 23. High-pressure metal hose; 24. Second check valve; 25. Pressure relief valve. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0021] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer", etc., 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 this application 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 this application.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0024] like Figure 1 and Figure 2As shown, this utility model includes a manifold 1 and multiple distribution pipes 2 connected to the manifold 1. The manifold 1 is equipped with multiple sets of extinguishing agent storage cylinders 3. Each distribution pipe 2 is equipped with a selector valve 4 and a drive gas cylinder 5 that controls the opening and closing of the selector valve 4. The drive gas cylinder 5 is equipped with an activation pipe 6 that connects to the selector valve 4 and controls the opening and closing of each set of extinguishing agent storage cylinders 3. The above-mentioned gas extinguishing system is a known structure and has been described in the background art, so it will not be repeated here. A first detection pipe 7 and a second detection pipe 8 are connected to the manifold 1. The first detection pipe 7 is equipped with a gas purging device, and the second detection pipe 8 is equipped with a liquid purging device. In its design, the gas ramming device includes an air compressor 13 installed at the input end of the first detection pipeline 7, and a third shut-off valve 14 installed on the first detection pipeline 7. A second pressure gauge 15 is installed on the first detection pipeline 7 between the third shut-off valve 14 and the air compressor 13. By using the air compressor 13 as the core component of the gas ramming device on the first detection pipeline 7, the device can stably provide the gas pressure required for detection, meeting the detection needs of different pressure levels. The third shut-off valve 14 can flexibly control the opening and closing of the first detection pipeline 7, facilitating the closure of the pipeline when not in use. The second pressure gauge 15, located between the third shut-off valve 14 and the air compressor 13, can monitor the output pressure value of the gas ramming device in real time, ensuring that the gas pressure in the input manifold 1 meets the detection requirements, guaranteeing the accuracy of the detection results, and allowing operators to clearly understand the gas ramming status and adjust parameters in a timely manner.

[0025] The aforementioned liquid flushing device includes a water pipe connector 16 installed at the input end of the second detection pipeline 8, and a fourth shut-off valve 17 installed on the second detection pipeline 8. A third pressure gauge 18 is installed on the second detection pipeline 8 between the fourth shut-off valve 17 and the water pipe connector 16, and a booster pump 19 is installed on the second detection pipeline 8 between the third pressure gauge 18 and the water pipe connector 16. The water pipe connector 16 facilitates connection to an external water source, providing a sufficient liquid supply for liquid flushing. The fourth shut-off valve 17 effectively controls the opening and closing of the second detection pipeline 8, allowing the liquid flushing channel to be opened or closed according to testing requirements. The third pressure gauge 18 monitors pressure changes in real time during the liquid flushing process, enabling operators to accurately understand the liquid pressure and ensure that the pressure remains within a reasonable range, preventing damage to the pipeline due to excessive pressure or affecting the testing results due to insufficient pressure. The addition of booster pump 19 can increase the pressure of the liquid according to actual needs, ensuring that the liquid has sufficient driving force in the pipeline. Even when facing a long or winding distribution pipeline 2, it can successfully complete the stamping test, improving the liquid stamping device's ability to test complex pipelines.

[0026] A first shut-off valve 9 is installed on the starting pipeline 6, located in front of the driving gas cylinder 5. Each distribution pipeline 2 is connected to a pressure measuring pipeline 10, on which a first pressure gauge 11 is installed. A second shut-off valve 12 is installed on the distribution pipeline 2 located behind the first pressure gauge 11 on the pressure measuring pipeline 10. In the design, the starting pipeline 6 includes a first control pipeline 20, one end connected to the driving gas cylinder 5 and the other end connected to the starting gas passage of the selector valve 4, and a second control pipeline 21, one end connected to the starting gas passage of the selector valve 4 and the other end connected to the container valve of the extinguishing agent storage cylinder 3. This starting pipeline 6 is divided into the first control pipeline 20 and the second control pipeline 21, with clear division of labor, enabling the driving gas cylinder 5 to control the selector valve 4 and the container valve of the extinguishing agent storage cylinder 3 more precisely and systematically. The first control line 20 connects the driving gas cylinder 5 and the starting gas channel of the selector valve 4, quickly transmitting the driving force of the driving gas cylinder 5 to the selector valve 4, ensuring that the selector valve 4 opens in a timely manner. The second control line 21 connects the starting gas channel of the selector valve 4 and the container valve of the extinguishing agent storage cylinder 3, controlling the opening and closing of the container valve of the extinguishing agent storage cylinder 3 simultaneously with the opening of the selector valve 4, achieving synergy between the actions of the selector valve 4 and the container valve of the extinguishing agent storage cylinder 3, ensuring that the fire extinguishing system can respond quickly when needed. During manufacturing, the first shut-off valve 9 is installed on the second control line 21 of the starting line 6, and a first one-way valve 22 is installed on the second control line 21 located between the first shut-off valve 9 and the selector valve 4. By placing the first shut-off valve 9 on the second control line 21 of the starting line 6, the control of the starting line 6 on the container valve of the extinguishing agent storage cylinder 3 can be more accurately cut off, effectively preventing accidental opening of the container valve of the extinguishing agent storage cylinder 3 from interfering with the detection when detecting the distribution line 2. The first check valve 22, located on the second control line 21 between the first shut-off valve 9 and the selector valve 4, can strictly limit the direction of gas flow, prevent gas backflow from affecting the normal operation of the start line 6, and ensure the unidirectionality and stability of the start signal transmission.

[0027] Each set of extinguishing agent storage cylinders 3 includes two or more extinguishing agent storage cylinders 3 connected to the starting pipeline 6. Each extinguishing agent storage cylinder 3 is equipped with a high-pressure metal hose 23 connected to the manifold, and the high-pressure metal hose 23 is also equipped with a second one-way valve 24. The presence of at least two extinguishing agent storage cylinders 3 connected to the starting pipeline 6 in each set improves the safety and reliability of the fire extinguishing system. If one extinguishing agent storage cylinder 3 malfunctions, the other can continue to operate, ensuring the fire extinguishing effect. A selection valve 4 is installed at the end of the distribution pipeline 2 near the manifold 1, and a pressure relief valve 25 is installed on the manifold. By installing the selection valve 4 at the end of the distribution pipeline 2 near the manifold 1, the connection and disconnection between the distribution pipeline 2 and the manifold 1 can be precisely controlled. This facilitates individual control of a specific distribution pipeline 2 during testing, enabling targeted testing of a single distribution pipeline 2 in conjunction with pressure measurement and other operations. A pressure relief valve 25 is installed on the manifold. When the pressure in the manifold exceeds the safe range, the pressure relief valve 25 can automatically open to relieve pressure and prevent damage to the manifold and related components due to excessive pressure.

[0028] When the selector valve 4 for the airtightness test of manifold 1 is initially closed, the preparation phase begins. It is confirmed that all selector valves 4 on distribution lines 2 are initially closed and have not received a start signal, and that the first shut-off valve 9, second shut-off valve 12, third shut-off valve 14, and fourth shut-off valve 17 are all closed. The test medium is selected according to the season: in winter, when the ambient temperature is ≤0℃, gas pressure testing is used on the first test line 7; in summer, when the ambient temperature is ≥25℃, liquid pressure testing is used on the second test line 8. Here, gas pressure testing is used as an example. Next, the gas pressure test is performed. The third shut-off valve 14 of the first test line 7 is opened, and the air compressor 13 is started. The output pressure is observed through the second pressure gauge 15 and adjusted to the preset manifold test pressure. Gas enters manifold 1 through the first test line 7. After the pressure on the second pressure gauge 15 stabilizes, the third shut-off valve 14 and the air compressor 13 are closed, and the pressure is maintained for 5 minutes. Observe the changes in the value of the second pressure gauge 15: if the pressure drop is ≤0.05MPa, the airtightness of the manifold 1 is deemed to be qualified; if the pressure drop is >0.05MPa, it indicates that there is a leak in the manifold 1, and it needs to be checked one by one.

[0029] When testing the airtightness of a single distribution pipeline 2, an electrical signal can be sent to the driving gas cylinder to open the selector valve 4. Simultaneously, the testing target is switched. After the collection pipeline 1 passes the test, the airtightness of the single distribution pipeline 2 needs to be tested. Taking the first distribution pipeline 2 as an example: the corresponding driving gas cylinder 5 is activated by an electrical signal, and the selector valve 4 opens upon receiving the signal. The first shut-off valve 9 is closed, and the second control pipeline 21 is cut off to prevent accidental activation of the extinguishing agent storage cylinder 3. The second shut-off valve 12 of the pressure testing pipeline 10 corresponding to this distribution pipeline 2 is closed. Under normal conditions, the second shut-off valve 12 of the distribution pipeline 2 remains open. Then, a gas pressure test is performed. The third shut-off valve 14 of the first testing pipeline 7 and the air compressor 13 are reopened, and the output pressure is adjusted to the preset pressure of this distribution pipeline 2. The pressure is monitored and stabilized using the second pressure gauge 15. Observe the value of the first pressure gauge 11: After the pressure stabilizes, compare the pressure displayed on the first pressure gauge 11 with the value of the second pressure gauge 15 to determine whether the airtightness of the distribution pipeline 2 is qualified; if the pressure difference is >0.03MPa, it indicates that there is a leak in the distribution pipeline 2, such as at the welding point at the bend, or at the interface of the selector valve 4. When testing multiple pipelines, repeat the above steps, sequentially opening the selector valve 4 of other distribution pipelines 2, closing the corresponding first shut-off valve 9 and opening the second shut-off valve 12, and testing the airtightness of each distribution pipeline 2 one by one to achieve precise location of the leak point.

[0030] When using liquid pressure to assist in testing in summer or high-requirement scenarios, close the third shut-off valve 14, open the fourth shut-off valve 17, connect the water source through the water pipe connector 16, start the booster pump 19, and adjust the pressure to the preset value through the third pressure gauge 18. The liquid enters the manifold 1 through the second detection pipeline 8, and then enters the target distribution pipeline 2 through the opened selector valve 4. After observing that the pressure on the first pressure gauge 11 has stabilized, similarly, compare the preset values ​​of the first pressure gauge 11 with those of the third pressure gauge 18. If the liquid pressure does not drop significantly and there are no signs of leakage at the pipeline interface, it can help confirm the airtightness; if a pressure drop or leakage occurs, it can directly locate the leak point. Liquid visualization is stronger and suitable for testing at complex bends.

[0031] After the test is completed, close all valves in sequence, release the residual pressure gas or liquid in the manifold 1 through the pressure relief valve 25, and then reset the first shut-off valve 9, the second shut-off valve 12, etc. to their initial state to ensure that the system returns to the normal standby mode.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A gas extinguishing system pipeline connection detection device, comprising a collection pipeline (1) and multiple distribution pipelines (2) connected to the collection pipeline (1), wherein multiple sets of extinguishing agent storage cylinders (3) are provided on the collection pipeline (1), each distribution pipeline (2) is provided with a selection valve (4) and a driving gas cylinder (5) for controlling the switching of the selection valve (4), and the driving gas cylinder (5) is provided with an activation pipeline (6) connected to the selection valve (4) and controlling the switching of each set of extinguishing agent storage cylinders (3), characterized in that: The manifold (1) is connected to a first detection pipe (7) and a second detection pipe (8). The first detection pipe (7) is equipped with a gas sump device, and the second detection pipe (8) is equipped with a liquid sump device. The start-up pipe (6) is equipped with a first shut-off valve (9) located in front of the driving gas cylinder (5). Each distribution pipe (2) is connected to a pressure measuring pipe (10). The pressure measuring pipe (10) is equipped with a first pressure gauge (11). The distribution pipe (2) located behind the first pressure gauge (11) on the pressure measuring pipe (10) is equipped with a second shut-off valve (12).

2. The gas extinguishing system pipeline connection detection device as described in claim 1, characterized in that: The gas ramming device includes an air compressor (13) installed at the input end of the first detection pipeline (7), and a third shut-off valve (14) installed on the first detection pipeline (7). A second pressure gauge (15) is installed on the first detection pipeline (7) located between the third shut-off valve (14) and the air compressor (13).

3. The gas extinguishing system pipeline connection detection device as described in claim 1, characterized in that: The liquid pressurizing device includes a water pipe connector (16) installed at the input end of the second detection pipeline (8), and a fourth shut-off valve (17) installed on the second detection pipeline (8). A third pressure gauge (18) is installed on the second detection pipeline (8) between the fourth shut-off valve (17) and the water pipe connector (16), and a booster pump (19) is installed on the second detection pipeline (8) between the third pressure gauge (18) and the water pipe connector (16).

4. The gas extinguishing system pipeline connection detection device as described in claim 1, characterized in that: The starting pipeline (6) includes a first control pipeline (20) with one end connected to the driving gas cylinder (5) and the other end connected to the starting gas passage of the selector valve (4), and a second control pipeline (21) with one end connected to the starting gas passage of the selector valve (4) and the other end connected to the container valve of the extinguishing agent storage cylinder (3).

5. The gas extinguishing system pipeline connection detection device as described in claim 4, characterized in that: The first shut-off valve (9) is installed on the second control line (21) of the start-up line (6), and a first check valve (22) is installed on the second control line (21) located between the first shut-off valve (9) and the selector valve (4).

6. The gas extinguishing system pipeline connection detection device as described in claim 1, characterized in that: Each set of extinguishing agent storage bottles (3) includes two or more extinguishing agent storage bottles (3) connected to the starting pipeline (6). Each extinguishing agent storage bottle (3) is provided with a high-pressure metal hose (23) connected to the manifold. The high-pressure metal hose (23) is provided with a second one-way valve (24).

7. The gas extinguishing system pipeline connection detection device as described in claim 1, characterized in that: A selection valve (4) is provided at one end of the distribution pipe (2) near the collection pipe (1), and a pressure relief valve (25) is provided on the collection pipe.

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