Integrated blowing and measuring device for cable tunnel carbon dioxide fire extinguishing system

Abstract

The utility model relates to cable tunnel fire control pipeline detection technical field especially, relate to the blowing and measuring integrated overhauling device of cable tunnel carbon dioxide fire extinguishing system. The utility model discloses hydraulic lifting trolley, gasoline generator, isolation baffle, air compressor and overhauling system, the top assembly of hydraulic lifting trolley has gasoline generator and air compressor, the top of hydraulic lifting trolley and the position between gasoline generator and air compressor position assembly has isolation baffle, and the storage tank of air compressor is connected with overhauling system through pipeline. The utility model adopts the form of large -flow air compressor to can carry out the blowing maintenance to fire control pipeline, and can carry out the test to its airtightness, adopts the gasoline generator to carry out the power supply to the system, and the field operation is suitable, integrates the gasoline generator, isolation baffle, air compressor and overhauling system on hydraulic lifting trolley, can single -person operation, and the mobile overhauling device of convenient and fast, the convenient device's on -off car.

Description

Technical Field

[0001] This utility model relates to the field of cable tunnel fire pipeline inspection technology, and in particular to an integrated inspection and maintenance device for carbon dioxide fire extinguishing systems in cable tunnels. Background Technology

[0002] Due to their characteristics of deep burial, significant elevation differences, and numerous bends, cable tunnels have increasingly adopted carbon dioxide gas for fire suppression in recent years. However, due to limited space and operational maintenance difficulties, a common design approach is to lay carbon dioxide fire suppression pipelines and nozzles within the cable tunnel itself, rather than installing carbon dioxide storage cylinders. When a fire occurs, a carbon dioxide injection fire truck is called to the scene, and the carbon dioxide injection port at the pre-reserved cable tunnel entrance / exit location is used to inject the fire suppression gas. Currently, there is no specific maintenance equipment for the carbon dioxide fire suppression pipelines within cable tunnels, and regular airtightness checks and purging of impurities are not performed on the installed pipelines.

[0003] Existing fire-fighting pipeline airtightness testing devices are large and complex in structure, making them inconvenient to carry. These devices are generally used to test the airtightness of fire-fighting pipelines during production. However, most leaks in fire-fighting pipelines occur at pipe connections, so testing needs to be carried out during construction, which the aforementioned devices cannot achieve. To overcome this problem, a fire-fighting pipeline airtightness testing device, such as the one described in patent publication number "CN222124659U", has been developed.

[0004] The device includes a fire-fighting pipeline, a detection tube, and a pressure gauge. One end of the fire-fighting pipeline is connected to the detection tube. The detection tube has an annular sealing airbag and an annular magnet fixedly connected to it on the outside of the side closest to the fire-fighting pipeline. An air pump is located at the end of the detection tube away from the fire-fighting pipeline. The pressure gauge is located in the middle of the detection tube. The entire device consists of a detection tube, a pressure gauge, and an air pump. It has a simple structure, is easy to carry, and can detect the airtightness of the fire-fighting pipeline in a timely manner during construction.

[0005] The existing technology has the following objective drawbacks:

[0006] First, although the device is portable, it uses a manually operated air pump. For fire extinguishing pipelines such as those in cable tunnels, which are long and have large spaces, using a manual air pump to pressurize it to the preset airtightness test pressure of 0.6-0.8 MPa would be a very lengthy process, and ordinary air pumps are unlikely to reach this pressure value.

[0007] Secondly, over time, rust, dust, insects, solid impurities, and sewage accumulate in unused pipes, requiring cleaning. Therefore, it is necessary to purge them with a large airflow. However, the airflow generated by pressurizing fire hydrants is very small and insufficient to purge the impurities inside the pipes effectively, thus failing to achieve the purpose of maintenance.

[0008] Third, while traditional airtightness testing devices are equipped with air pumps, they do not consider the pump's power consumption. Cable tunnels are typically operated in the field, where electrical connections are usually not feasible.

[0009] Fourth, traditional pipeline airtightness testing devices are large and complex in structure, making them inconvenient to carry. Transporting these devices is difficult, requiring manual handling for loading and unloading. Upon arrival at the construction site, testing cannot be conducted immediately; multiple people are often needed to assist with transporting, assembling, and starting the device for testing. Therefore, we propose an integrated blowing and testing maintenance device for carbon dioxide fire extinguishing systems in cable tunnels. Utility Model Content

[0010] The purpose of this invention is to provide an integrated maintenance and testing device for carbon dioxide fire extinguishing systems in cable tunnels, in order to solve the problems mentioned in the background art.

[0011] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0012] An integrated maintenance and testing device for a carbon dioxide fire extinguishing system in a cable tunnel includes a hydraulic lifting trolley, a gasoline generator, an isolation baffle, an air compressor, and a maintenance system. The gasoline generator and air compressor are mounted on the top of the hydraulic lifting trolley. An isolation baffle is mounted on the top of the hydraulic lifting trolley, located between the gasoline generator and the air compressor. The air compressor's storage tank is connected to the maintenance system via a pipeline. The hydraulic lifting trolley carries the gasoline generator, isolation baffle, air compressor, and maintenance system. The gasoline generator supplies power to the hydraulic lifting trolley and air compressor.

[0013] Preferably, the hydraulic lifting trolley includes a bottom support, a drive support, a driven support, fixed rollers, a trolley panel, a bottom slide rail, a push-pull rod, a control box, casters, a hydraulic cylinder, and a connecting shaft. The bottom of the hydraulic lifting trolley is provided with a bottom support, and a driven support is rotatably connected to one end of the inner side of the bottom support. Both sides of the inner side of the bottom support have internal grooves, and a drive support is slidably connected to the inner sides of the two internal grooves. The middle of the drive support and the driven support are rotatably connected via a connecting shaft, and the top of the drive support rotates. A trolley panel is connected to the device. Two fixed rollers are fixed to the bottom corners of the trolley panel. Bottom slide rails are fixed to both sides of the bottom of the trolley panel, corresponding to the top ends of the driven bracket. The bottom slide rails are slidably connected to the top of the driven bracket. A push-pull rod is welded to one end of the top of the trolley panel. A control box is welded to one side of the trolley panel. Universal wheels are fixed to the other two bottom corners of the trolley panel. A hydraulic cylinder is rotatably connected to the inner side of the driven bracket, and the output end of the hydraulic cylinder is rotatably connected to the inner side of the drive bracket.

[0014] Preferably, the trolley panel is fixed to the gasoline generator and air compressor by bolts, and the trolley panel is welded to the isolation baffle.

[0015] Preferably, the air compressor includes a bottom saddle, a horizontal air tank, an electrical control box, and air pumps. Two bottom saddles are fixed to the top of the trolley panel by bolts. A horizontal air tank is fixed to the top of the two bottom saddles. A mounting support frame is fixed to the top of the horizontal air tank. An electrical control box and four air pumps are fixed to the top of the mounting support frame. The electrical control box is electrically connected to the air pumps through wires.

[0016] Preferably, the maintenance system includes a connecting steel pipe, a tank pressure gauge, a safety valve, a manual ball valve, an exhaust valve, a fire pipeline pressure gauge, a tee, a 90° elbow, a flow meter, a long hose, and an injection port quick connector. A connecting steel pipe is fixed to one end of the horizontal gas storage tank. From left to right, the top of the connecting steel pipe is sequentially fixed with a tee for the tank pressure gauge, safety valve, exhaust valve, and fire pipeline pressure gauge. A manual ball valve is threaded onto the top of the connecting steel pipe, located between the safety valve and the exhaust valve. A 90° elbow is fixed onto the top of the connecting steel pipe, near the fire pipeline pressure gauge. A flow meter is threaded onto one end of the connecting steel pipe, near the 90° elbow. A long hose is connected to one end of the connecting steel pipe, below the flow meter, via a conversion connector. One end of the long hose is connected to an injection port quick connector.

[0017] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0018] At the same time, through the above technical solutions, this utility model has at least the following beneficial effects:

[0019] 1. This utility model uses a high-flow air compressor to perform air tightness testing and purging operations on fire-fighting pipelines. Therefore, this utility model has multi-functional characteristics, which can both purge and maintain fire-fighting pipelines and test their air tightness.

[0020] 2. This utility model uses a gasoline generator to power the system, which can better address the challenge of inconvenient power connection for cable tunnel fire pipe maintenance and repair work in the field. Using portable power banks like the "Electric Power Bank" cannot meet the requirements of high-power, high-airflow purging operations. Therefore, this utility model has the advantage of being suitable for field operations.

[0021] 3. This utility model adopts a scissor-type hydraulic lifting trolley, and integrates a gasoline generator, isolation baffle, air compressor and maintenance system on the hydraulic lifting trolley. It can be operated by a single person, making it convenient and quick to move the maintenance device and facilitating the loading and unloading of the device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the hydraulic lifting trolley structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the air compressor structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the maintenance system structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the integrated blowing and testing maintenance device for the carbon dioxide fire extinguishing system in cable tunnels according to this utility model.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] In the diagram: 1. Hydraulic lifting trolley; 101. Bottom support; 102. Drive support; 103. Driven support; 104. Fixed roller; 105. Trolley panel; 106. Bottom slide rail; 107. Push-pull rod; 108. Control box; 109. Casters; 110. Hydraulic cylinder; 111. Connecting shaft; 2. Gasoline generator; 3. Isolation baffle; 4. Air compressor; 401. Bottom saddle; 402. Horizontal air tank; 403. Electrical control box; 404. Air pump; 5. Maintenance system; 501. Connecting steel pipe; 502. Tank test pressure gauge; 503. Safety valve; 504. Manual ball valve; 505. Exhaust valve; 506. Fire pipeline test pressure gauge; 507. Tee; 508. 90° elbow; 509. Flow meter; 510. Long hose; 511. Injection port quick connector. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] Example

[0032] Reference Figure 1-4 An integrated maintenance and testing device for a carbon dioxide fire extinguishing system in a cable tunnel includes a hydraulic lifting trolley 1, a gasoline generator 2, an isolation baffle 3, an air compressor 4, and a maintenance system 5. The gasoline generator 2 and air compressor 4 are mounted on top of the hydraulic lifting trolley 1. An isolation baffle 3 is installed on top of the hydraulic lifting trolley 1, positioned between the gasoline generator 2 and air compressor 4. The air compressor 4's storage tank is connected to the maintenance system 5 via pipelines. The hydraulic lifting trolley 1 supports the gasoline generator 2, isolation baffle 3, air compressor 4, and maintenance system 5. The gasoline generator 2 provides power to the hydraulic lifting trolley 1 and air compressor 4. The hydraulic lifting trolley 1 serves as the basic support structure for the entire platform. The gasoline generator 2 is a cuboid structure, and its starting method combines electric start and pull-rope start. The main function of the gasoline generator 2 is to provide power to the air compressor 4 and simultaneously charge the rechargeable hydraulic lifting trolley 1. Of course, under conditions of good power supply, the hydraulic lifting trolley 1 can be charged via an external power source. The air compressor 4 is also installed on the hydraulic lifting trolley 1. The air compressor 4 is supplied with air by four electric air pumps 404, which compress external air through filtration into the horizontal air tank 402 below to form a certain pressure reserve, achieving the purpose of stable and continuous output of external pressure. The air compressor 4's storage tank is connected to the maintenance system 5 via pipelines.

[0033] The hydraulic lifting trolley 1 includes a bottom support 101, a drive support 102, a driven support 103, fixed rollers 104, a trolley panel 105, a bottom slide rail 106, a push-pull rod 107, a control box 108, casters 109, a hydraulic cylinder 110, and a connecting shaft 111. The bottom of the hydraulic lifting trolley 1 is provided with a bottom support 101. One end of the inner side of the bottom support 101 is rotatably connected to the driven support 103. Both sides of the bottom support 101 have internal grooves, and a drive support 102 is slidably connected to the inner sides of the two grooves. The middle of the drive support 102 and the driven support 103 are rotatably connected via the connecting shaft 111. The top of the drive support 102 is rotatably connected to the trolley panel 105. Fixed rollers 104 are fixed to the two corners of the bottom of the trolley panel 105. Bottom slide rails 106 are fixed to both sides of the bottom of the carriage panel 105, corresponding to the top ends of the driven bracket 103. The bottom slide rails 106 are slidably connected to the top of the driven bracket 103. A push-pull rod 107 is welded to one end of the top of the carriage panel 105. A control box 108 is welded to one side of the carriage panel 105. Universal wheels 109 are fixed to the other two bottom corners of the carriage panel 105. A hydraulic cylinder 110 is rotatably connected to the inner side of the driven bracket 103. The output end of the hydraulic cylinder 110 is rotatably connected to the inner side of the drive bracket 102. The lower part of the driven bracket 103 is hinged to the bottom bracket 101, while the upper part slides back and forth within the bottom slide rails 106. To reduce friction, deep groove ball bearings are used at its ends. The control box 108 is welded to the side of the carriage panel 105. It contains several control buttons and is mainly used to install rechargeable batteries, control components, and other parts.

[0034] The trolley panel 105 is fixed to the gasoline generator 2 and the air compressor 4 by bolts. The trolley panel 105 is also welded to the isolation baffle 3. The gasoline generator 2 is connected to the trolley panel 105 of the hydraulic lifting trolley 1 by bolts. The main function of the gasoline generator 2 is to provide power to the air compressor 4 and the hydraulic lifting trolley 1, and it can output 220V / 380V mobile power.

[0035] The air compressor 4 includes a bottom saddle 401, a horizontal air tank 402, an electrical control box 403, and air pumps 404. Two bottom saddles 401 are bolted to the top of the trolley panel 105. A horizontal air tank 402 is fixed to the top of the two bottom saddles 401. A mounting support frame is fixed to the top of the horizontal air tank 402. The electrical control box 403 and four air pumps 404 are fixed to the top of the mounting support frame. The electrical control box 403 is electrically connected to the air pumps 404 via wires. The electrical control box 403 is welded to the mounting support frame on the horizontal air tank 402. Its main function is to control the start and stop of the air pumps 404. When the air pressure reaches a preset value, the operation of the air pumps 404 stops. Conversely, when the air pressure drops too quickly, the number of air pumps 404 activated increases. There are a total of four air pumps 404, welded to the mounting support frame on top of the horizontal air tank 402.

[0036] The maintenance system 5 includes a connecting steel pipe 501, a tank pressure gauge 502, a safety valve 503, a manual ball valve 504, an exhaust valve 505, a fire pipeline pressure gauge 506, a tee 507, a 90° elbow 508, a flow meter 509, a long hose 510, and an injection port quick connector 511. A connecting steel pipe 501 is fixed to one end of the horizontal gas storage tank 402. From left to right, the top of the connecting steel pipe 501 is connected to the tank pressure gauge 502, safety valve 503, exhaust valve 505, and fire pipeline pressure gauge 506 via a tee 507. The top of the connecting steel pipe 501, located at the safety valve 504... A manual ball valve 504 is threadedly connected between the fire hose 501 and the exhaust valve 505. A 90° elbow 508 is fixed at the top of the connecting steel pipe 501, near the fire pipeline test pressure gauge 506. A flow meter 509 is threadedly connected to one end of the connecting steel pipe 501, near the 90° elbow 508. A long flexible hose 510 is connected to one end of the connecting steel pipe 501, below the flow meter 509, via a conversion joint. One end of the long flexible hose 510 is connected to an injection port quick connector 511. The maintenance system 5 also includes a plug assembly, which is mainly used for sealing operations after the fire pipeline sprinkler head is unloaded. This creates a sealed, pressurized space in the fire pipeline for airtightness testing.

[0037] This device is used with a purging process, which includes the following steps:

[0038] Step 1: Develop a pressure stabilization purging plan and determine the purging process; before the maintenance work begins, set up an isolation barrier to protect the safety of the work area, push the hydraulic lifting trolley 1 from near the transport pickup truck to the maintenance area, and lock and fix the rollers 104 and casters 109.

[0039] Step 2: Connect the quick connector 511 of the injection port of the integrated blowing and testing maintenance device to the gas injection port of the carbon dioxide fire extinguishing system in the cable tunnel in a sealed manner. Check whether the maintenance device of the carbon dioxide fire extinguishing system is intact. Then turn on the generator on the fire extinguishing device and check the stability of the output power.

[0040] Step 3: Turn on the air compressor 4 and simultaneously close the manual ball valve 504 and the exhaust valve 505; read the reading of the tank pressure gauge 502 in real time, and wait until the predetermined pressure is reached before gradually opening the manual ball valve 504; open it slightly first to warm up the pipe, and at the same time observe the pointer reading of the fire pipeline pressure gauge 506. If there is no rapid change, it means that there is no major blockage in the fire pipeline. Then gradually increase the opening of the manual ball valve 504 until the rated purging pressure is reached. The airflow will carry the mud, sand, insects, dirt and rust in the pipeline out through the outlet.

[0041] Step 4: If the pointer reading of the fire pipeline test pressure gauge 506 shows a significant and rapid increasing trend, and its pointer reading gradually approaches that of the storage tank test pressure gauge 502, it indicates that there is a large amount of blockage inside. At this time, the air compressor 4 should be turned off immediately. After the air compressor 4 stops running, the manual ball valve 504 should be gradually closed. The blockage location should be searched step by step. Once the blockage location and cause are found, the exhaust valve 505 should be gradually opened to release the pressure of the gas in the fire pipeline.

[0042] Step 5: During normal purging, as the gas inside the pipe is expelled, use a rubber mallet to tap the pipe, focusing on the weld seam and the bottom of the pipe, but without damaging the pipe, to help remove and purge the dirt; purging involves stabilizing the purging pressure and flow rate by adjusting the exhaust valve 505 to achieve the preset values ​​of the purging plan; at the same time, ensure that the air velocity during purging is not less than 20m / s;

[0043] Step 6: Then, pressurize the air compressor 4 to inject air and check the air jet status of each nozzle.

[0044] Step 7: After repeating steps S1-S6 several times, check the purging results. The method is as follows: During the air purging process, when there is no smoke or dust in the exhaust, a wooden target board with a white cloth or white paint attached should be placed at the exhaust port for inspection. If there is no rust, dust, moisture or debris on the target board within 5 minutes, it is considered qualified. If the test fails, repeat the purging process until the test is qualified.

[0045] Step 8: After the purging operation is completed, first turn off the air compressor 4, then turn off the gasoline generator 2; when the pressure values ​​of the tank test pressure gauge 502 and the fire pipeline test pressure gauge 506 both drop to normal pressure, the connecting pipes between the maintenance device and the fire extinguishing system can be removed, the pipeline can be restored to its original state, and the hydraulic lifting trolley 1 can be separated from the on-site operation barrier.

[0046] In summary:

[0047] This utility model addresses the following technical problems: Current technologies have the following objective drawbacks: First, while the device is portable, it uses a manually operated air pump. This is problematic for long and spacious fire-fighting pipelines like those in cable tunnels. Reaching the preset airtightness test pressure of 0.6-0.8 MPa using a manual air pump is a very lengthy process, and ordinary air pumps cannot achieve this pressure. Second, over time, rust, dust, insects, solid impurities, and sewage accumulate in empty pipes, requiring cleaning. Therefore, it is necessary to purge these impurities with a large airflow. However, the airflow from an air pump is very small and insufficient to purge these impurities effectively for maintenance. Third, while traditional airtightness testing devices include an air pump, they do not consider the pump's power requirements. Cable tunnels are typically operated in the field, where electrical connection is usually not possible. Fourth, traditional pipe airtightness testing devices are large and complex, making them inconvenient to carry. Transporting the airtightness testing device is difficult, requiring manual handling for loading and unloading from vehicles. Upon arrival at the construction site, testing cannot be conducted immediately; multiple people are often needed to assist with handling, assembly, and power-on testing. By adopting the technical solutions of the above embodiments and through the aforementioned arrangements, this application can certainly solve the above-mentioned technical problems and achieve the following technical effects:

[0048] 1. This utility model uses a high-flow air compressor 4 to perform air tightness testing and purging operations on fire-fighting pipelines. Therefore, this utility model has multi-functional characteristics, which can both purge and maintain fire-fighting pipelines and test their air tightness.

[0049] 2. This utility model uses a gasoline generator 2 to power the system, which can better address the challenge of inconvenient power connection for cable tunnel fire pipe maintenance and repair work in the field. Using portable power banks such as those from Electric Xiao Er cannot meet the requirements of high-power, high-airflow purging operations. Therefore, this utility model has the advantage of being suitable for field operations.

[0050] 3. This utility model adopts a scissor-type hydraulic lifting trolley 1, and integrates a gasoline generator 2, an isolation baffle 3, an air compressor 4 and a maintenance system 5 on the hydraulic lifting trolley 1. It can be operated by a single person, making it convenient and quick to move the maintenance device and facilitating the loading and unloading of the device.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 utility model according to the specific circumstances.

[0052] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; conversely, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A blow-down and integrated inspection device for a cable tunnel carbon dioxide fire extinguishing system, characterized in that, The system includes a hydraulic lifting trolley (1), a gasoline generator (2), an isolation baffle (3), an air compressor (4), and a maintenance system (5). The top of the hydraulic lifting trolley (1) is equipped with the gasoline generator (2) and the air compressor (4). The isolation baffle (3) is installed on the top of the hydraulic lifting trolley (1) and located between the gasoline generator (2) and the air compressor (4). The storage tank of the air compressor (4) is connected to the maintenance system (5) through a pipeline. The hydraulic lifting trolley (1) is used to carry the gasoline generator (2), the isolation baffle (3), the air compressor (4), and the maintenance system (5). The gasoline generator (2) is used to supply power to the hydraulic lifting trolley (1) and the air compressor (4).

2. The integrated purging and inspection apparatus for a cable tunnel CO2 fire suppression system of claim 1, wherein, The hydraulic lifting trolley (1) includes a bottom bracket (101), a drive bracket (102), a driven bracket (103), fixed rollers (104), a trolley panel (105), a bottom slide rail (106), a push-pull rod (107), a control box (108), casters (109), a hydraulic cylinder (110), and a connecting shaft (111). The bottom of the hydraulic lifting trolley (1) is provided with a bottom bracket (101). One end of the inner side of the bottom bracket (101) is rotatably connected to the driven bracket (103). Both sides of the bottom bracket (101) are provided with inner grooves. A drive bracket (102) is slidably connected to the inner side of the two inner grooves. The middle of the drive bracket (102) and the driven bracket (103) are rotatably connected through the connecting shaft (111). The top of the trolley panel (105) is rotatably connected to the trolley panel (105). The two bottom corners of the trolley panel (105) are fixed with fixed rollers (104). The two sides of the bottom of the trolley panel (105) and the positions corresponding to the top ends of the driven bracket (103) are fixed with bottom slide rails (106). The bottom slide rails (106) are slidably connected to the top of the driven bracket (103). A push-pull rod (107) is welded to one end of the top of the trolley panel (105). A control box (108) is welded to one side of the trolley panel (105). The other two bottom corners of the trolley panel (105) are fixed with casters (109). A hydraulic cylinder (110) is rotatably connected to the inner side of the driven bracket (103). The output end of the hydraulic cylinder (110) is rotatably connected to the inner side of the drive bracket (102).

3. The integrated purging and inspection apparatus for a cable tunnel CO2 fire suppression system of claim 2, wherein, The trolley panel (105) is fixed to the gasoline generator (2) and the air compressor (4) by bolts, and the trolley panel (105) is welded to the isolation baffle (3).

4. The integrated purging and inspection apparatus for a cable tunnel CO2 fire suppression system of claim 2, wherein, The air compressor (4) includes a bottom saddle (401), a horizontal air tank (402), an electrical control box (403), and an air pump (404). The top of the trolley panel (105) is fixed with two bottom saddles (401) by bolts. A horizontal air tank (402) is fixed on the top of the two bottom saddles (401). A mounting support frame is fixed on the top of the horizontal air tank (402). An electrical control box (403) and four air pumps (404) are fixed on the top of the mounting support frame. The electrical control box (403) is electrically connected to the air pumps (404) through wires.

5. The integrated blowing and testing maintenance device for a carbon dioxide fire extinguishing system in a cable tunnel according to claim 4, characterized in that, The maintenance system (5) includes a connecting steel pipe (501), a tank pressure gauge (502), a safety valve (503), a manual ball valve (504), an exhaust valve (505), a fire pipeline pressure gauge (506), a tee (507), a 90° elbow (508), a flow meter (509), a long hose (510), and an injection port quick connector (511). One end of the horizontal gas storage tank (402) is fixed to the connecting steel pipe (501). From left to right, the top of the connecting steel pipe (501) is secured with the tank pressure gauge (502), safety valve (503), exhaust valve (505), and fire pipeline pressure gauge (506) via the tee (507). 506), a manual ball valve (504) is threadedly connected to the top of the connecting steel pipe (501) and located between the safety valve (503) and the exhaust valve (505). A 90° elbow (508) is fixed to the top of the connecting steel pipe (501) and near the fire pipeline test pressure gauge (506). A flow meter (509) is threadedly connected to one end of the connecting steel pipe (501) and near the 90° elbow (508). A long hose (510) is connected to one end of the connecting steel pipe (501) and below the flow meter (509) via a conversion connector. One end of the long hose (510) is connected to an injection port quick connector (511).

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