233 results about "Airbox" patented technology

The invention relates to a simplified gas delivery system for atomic layer etching. According to the system, the overall cost is reduced by omitting the requirements of a gas tank and a pressure gauge. A preset mass flow controller (MFC) and a three-way valve can accurately control the gas flow in the surface modification step and the sputtering step of the ALE process. By means of the self-limiting property of the ALE process, the system does not need to maintain the steady-state pressure of the chamber, and the efficiency can be improved only by controlling the volume of the conveyed gas.

The invention relates to the technical field of ring main units, and provides a self-adaptive protection device for a ring main unit, which comprises a cabinet body, a gas tank mounted on the back of the cabinet body and filled with environment-friendly insulating gas, and a pressure relief pipe with one end communicated with the top of the gas tank and used for pressure relief of the gas tank, the top of the gas tank is provided with a pressure relief regulation and control assembly, and the top of the pressure relief regulation and control assembly is provided with a dustproof assembly. The pressure relief regulation and control assembly comprises a funnel-shaped main speed discharging barrel arranged at the top of the air box and a butt joint sleeve for connecting the main speed discharging barrel with the pressure relief pipe in a sealed mode. During use, the main pressure relief channel and the branch slow-heating pressure relief channels are utilized and respond to instantaneous high-pressure impact and continuous hot pressing respectively, so that deformation and damage of the gas tank caused by instantaneous arcing overpressure are effectively prevented, and the potential safety hazard that pressure accumulation caused by abnormal slow temperature rise cannot be released in time is eliminated; and self-adaptive protection of the ring main unit gas tank is realized.

1. The name of the design product: Air. 2. The use of the design product: used for Carplay, Android Auto, HiCar, Android system, and original car upgrade intelligent multimedia function, and smart phone mirror projection, wireless interconnection control. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention discloses a cast rolling production degassing box which comprises a supporting base fixedly installed on the ground, a degassing box body is fixedly installed on the upper surface of the supporting base, a supporting frame is fixedly installed on the outer portion of the rear side of the degassing box body, and a gas storage box storing inert gas is fixedly installed on the upper surface of the supporting base. A first air pump communicated with the air storage box is fixedly installed on the upper surface of the air storage box, the first air pump is communicated with a containing groove formed in the bottom end of the interior of the degassing box body through a conveying pipe, the air storage box is connected with a preheating mechanism in the degassing box body, and an air brick is fixedly installed at the lower end of the interior of the degassing box body; and a stirrer is rotationally mounted above the air brick. According to the degassing box for cast-rolling production, the heat exchange pipeline is heated through the temperature of molten aluminum, inert gas in the gas storage box circularly flows in the heat exchange pipeline through cooperation of the second gas pump and the connecting pipe, the purpose of preheating gas is achieved, and the situation that the molten aluminum is solidified due to the low temperature when the gas is introduced into the molten aluminum is reduced.

The invention belongs to the technical field of ring main unit equipment, and discloses a compact modular ring main unit with a cable testing function and an interlocking function. The ring main unit comprises a cable chamber and a gas box core unit fixed on the cable chamber, the front part of the gas box core unit is provided with a mechanism chamber, and the top of the mechanism chamber is provided with a control box chamber with a special-shaped design; a left load switch mechanism cover plate, a left detection facility cover plate, a circuit breaker switch mechanism cover plate, a right load switch mechanism cover plate and a right detection facility cover plate are installed right in front of the mechanism chamber. Mechanical interlocks are respectively arranged between the left detection facility cover plate and the grounding mechanism and between the right detection facility cover plate and the grounding mechanism; and manually operated interlocking devices are arranged between the left load switch mechanism cover plate and the left detection facility cover plate and between the right load switch mechanism cover plate and the right detection facility cover plate. According to the invention, the ring main unit product has modular and standardized design.

The utility model provides a metal plate spliced environment-friendly gas ring main unit, which comprises a gas tank assembly body, a control chamber assembly body, a mechanism chamber assembly body and a cable chamber assembly body, one side of the gas tank assembly body is connected with the mechanism chamber assembly body through a connecting bolt, the control chamber assembly body is arranged at the upper part of the mechanism chamber assembly body, and the cable chamber assembly body is arranged at the lower part of the control chamber assembly body. A cable chamber assembly body is installed on the lower portion of the air box assembly body and the lower portion of the mechanism chamber assembly body, positioning installation holes are formed in the side faces of the air box assembly body and the mechanism chamber assembly body, and a mechanism chamber insulation fixing top plate is installed on the upper portion of the mechanism chamber assembly body. According to the utility model, the mechanism chamber insulation fixing left side plate and the mechanism chamber insulation fixing bottom plate are bent in a Z shape, and the connecting bolts are welded on the upper side of the gas box assembly body and are fixed by the nuts, so that the interference of a gas box welding seam is avoided, the assembly tolerance is not influenced by the size of the welding seam, and the consistency of the appearance size of the assembled ring main unit can be ensured; and on-site cabinet combination installation is facilitated.

This utility model relates to the field of catalytic combustion device technology, and discloses a catalytic combustion device for industrial waste gas treatment, comprising: a catalytic combustion chamber, wherein a waste gas supply pipe is installed at the inlet end of the catalytic combustion chamber; an outlet pipe is disposed at the top outlet of the catalytic combustion chamber, a hot gas supply pipe is installed at the outlet end of the outlet pipe, a gas storage tank is installed at the outlet end of the hot gas supply pipe, and a dilution gas pipe is installed at the outlet of the gas storage tank. By mixing preheated air in the gas storage tank with high-concentration waste gas through the dilution gas pipe, the concentration of high-concentration waste gas can be reduced. Simultaneously, the air is heated, which reduces interference with the waste gas temperature and prevents high-concentration waste gas from directly entering the catalytic combustion chamber. This effectively prevents a sudden temperature rise inside the catalytic combustion chamber, avoids localized high temperatures inside the catalytic combustion chamber due to waste gas concentration approaching or exceeding the lower explosive limit, and improves the safety performance of the device.

The invention discloses an underground structure retaining wall transportation device convenient to use, and belongs to the technical field of underground structure retaining wall transportation. The air pressure assembly comprises two telescopic columns, the outer end of any telescopic column is provided with a telescopic cylinder, and the end, away from the telescopic column, of the telescopic cylinder is provided with an air box; the reset assembly comprises a first sliding cylinder installed at the end, close to the air box, of the inner side wall of the transport box. The detection assembly comprises a controller mounted at one end of the outer side wall of the transportation box; and the mounting assembly comprises a mounting box mounted at the outer end of the transport box. Through the first protection plate and the second protection plate in the transportation box, when the underground structure retaining wall enters the placement plate, the upward moving height of the protection plates can be automatically adjusted according to the air pressure of the air pipe entering the transportation box; damage caused by falling when the underground structure retaining wall needing to be transported is higher than the transport box can be effectively prevented, and the cost of an enterprise is reduced.

The utility model relates to a vacuum pump testboard, which belongs to the technical field of automobile vacuum pump testing, and comprises a testboard and a protective box, and a testing mechanism for testing the pumping efficiency of a vacuum pump is arranged outside the testboard; the testing mechanism comprises a hydraulic cylinder fixedly connected to the top of the protection box, an output shaft of the hydraulic cylinder is fixedly connected with a gas storage box, a gas flowmeter is installed on the outer side of a gas outlet pipe, limiting rods are fixedly connected to the periphery of the top of the testing table, and sliding blocks are fixedly connected to the left side and the right side of the gas storage box correspondingly. The sliding block is slidably connected with the limiting rod, and the middle part of the top end of the test bench is fixedly connected with a positioning groove. According to the vacuum pump test bench, the function of testing the pumping efficiency of the vacuum pump is realized, and the influence of different parameter settings on the performance of the vacuum pump is analyzed by testing the pumping efficiency, so that the optimal working parameter combination is found, the vacuum pump operates in the optimal state, the service life of the vacuum pump is prolonged, and the working effect of the vacuum pump is improved.

This application claims protection for a pressure vessel, a lighter, and an ignition gun. The pressure vessel includes a gas box and a base plate. The gas box includes a gas box body and a threaded sleeve, which is housed within the gas box body and integrally injection molded with the gas box body. The threaded sleeve is used to connect to an exhaust valve. The base plate is connected and sealed to the gas box body, and a cavity is formed between the gas box body and the base plate to contain fuel. The cavity communicates with the threaded sleeve so that the exhaust valve connected to the threaded sleeve can control the release of fuel. This not only reduces the manufacturing complexity and production cost of the gas box but also ensures the accuracy of the threaded sleeve's assembly position on the gas box body, avoiding tolerance fluctuations and cracking risks between the threaded sleeve and the gas box body. This improves the sealing performance and assembly reliability of the pressure vessel, effectively solving common problems such as poor flameout and ignition failure, and providing a reliable guarantee for the performance improvement of lighters, ignition guns, and other products.

The utility model discloses a walking machine bottom plate aluminum frame bending device which comprises an operation platform horizontally placed on the ground, a fixing die is fixedly installed on the upper surface of the operation platform, and an aluminum frame plate which needs to be bent and formed and is applied to a walking machine bottom plate is placed on the side face of the fixing die. A movable mold matched with the fixed mold is arranged above the operation platform, and the fixed mold and the movable mold are each provided with an arc-shaped structure. According to the bending device for the aluminum frame of the bottom plate of the walking machine, the novel structural design is adopted, the movable mold is pushed to move through the telescopic air cylinder, so that the movable mold and the fixed mold are matched with each other to achieve the purpose of extruding and bending an aluminum frame plate, and gas in the gas storage tank is conveyed into the heating spray head through the gas conveying pipe before bending; and finally, the purpose of heating the aluminum frame plate is achieved through ignition of the heating spray head, the aluminum frame is softened, and the situation that the aluminum frame is broken during bending is avoided.

A high-altitude double-grounding gas-filled cabinet gas tank structure comprises a gas tank formed by connecting a plurality of plates, the gas tank is filled with insulating gas, and the gas tank is divided into an upper gas tank, a middle gas tank and a lower gas tank along the height direction; the upper gas tank is internally provided with a first grounding system, the first grounding system is a two-station grounding switch and comprises a first guide sleeve and a first conducting rod, and one end of the first guide sleeve is provided with an insulation plugging structure, so that the first conducting rod can only move in a single direction; a second grounding system is arranged in the middle gas tank, the second grounding system is a three-station isolating switch, the three-station isolating switch comprises a second guide sleeve and a second conducting rod, and the two ends of the second guide sleeve are open, so that the second conducting rod can move in two opposite directions. Two sets of grounding systems are arranged, when one set of grounding system fails due to reasons, the other set of grounding system can still operate normally, and personal safety is guaranteed.

The utility model discloses a kind of steel bottle sealing property detection devices, including processing table, gas conveying component, the processing table upper portion is provided with lifting assembly, and lifting assembly can drive sealing head to move, the sealing head is used to seal the open end of steel bottle, and sealing head inside is provided with connecting pipe, the gas conveying component is sent gas to steel bottle interior by connecting pipe, and gas conveying component is connected with gas tank gas outlet, the gas tank both sides are provided with first air inlet and second air inlet, and first air inlet is connected with gas storage tank by communicating pipe component, the utility model is switched by the sealing plate in the gas tank inside and drive motor cooperation, the communication state of first air inlet and second air inlet can be switched by driving sealing plate rotation, to further make device can be detected by the inert gas or external gas of gas storage tank to steel bottle, to meet the detection needs of different types special gas steel bottle.

This utility model discloses a fully enclosed insulated gas-filled cabinet, including a cabinet body, a gas box installed on the cabinet body, and a three-position isolating circuit breaker installed inside the gas box. The top of the outer side of the gas box is provided with multiple external heat sinks, and a crossflow fan is installed on the top of the gas box. The top of the inside of the gas box is provided with multiple first internal heat sinks, and multiple second internal heat sinks are provided on both sides of the inner wall of the gas box. Cooling fans corresponding to the second internal heat sinks are symmetrically installed at the bottom of the inner wall of the gas box. This utility model improves the passive heat dissipation capacity of the gas box through the arrangement of the second internal heat sinks, first internal heat sinks, and external heat sinks. Furthermore, when encountering high load conditions leading to high temperatures, the cooling fans and crossflow fans are automatically activated by a temperature sensor and controller to actively dissipate heat, thereby improving the heat dissipation capacity of the gas box and preventing excessively high temperatures.

The present disclosure relates to an embodiment of an improved air intake system of a vehicle incorporating a modular hood plenum configured for receiving various interchangeable components including an engine air pre-cleaner, a cover plate and / or a snow door for mounting separate from the airbox assembly of the vehicle. The modular hood plenum includes a mounting interface that enables mounting of components within the hood rather than the air intake system, allowing easy access for service and / or replacement of components without compromising the air intake system of the vehicle.

An assembly for a snowmobile includes an airbox having a plenum for coupling to a throttle body of an engine and two branches defining openings for air intake. A storage box is mounted between the two branches and defines area for receiving a console. The airbox is part of a hood of the vehicle and includes an opening over a storage box. The disclosure also includes a ribbed bumper mount with a latch assembly for securing the hood.

The utility model discloses a quick disassembly and assembly expansion sleeve for an industrial brush, and relates to the technical field of expansion sleeves. The expansion sleeve comprises an expansion sleeve body, assembling grooves are symmetrically formed in the side walls of the expansion sleeve body, height adjusting mechanisms are arranged in the assembling grooves, arc-shaped protection boxes are symmetrically installed on the height adjusting mechanisms, an air blowing mechanism is arranged between the side walls of every two adjacent arc-shaped protection boxes, and each air blowing mechanism comprises a connecting air box. The two sides of the linkage air box are fixedly installed on the two arc-shaped protection boxes correspondingly, the linkage air box communicates with the arc-shaped protection boxes, an air blowing fan is fixedly installed on the side wall of the linkage air box and communicates with the linkage air box, and an air outlet mechanism is arranged on the arc-shaped protection boxes. According to the expansion sleeve, the amount of dirt on the expansion sleeve body can be effectively reduced, so that the abrasion speed of the expansion sleeve in the transmission process can be reduced, and the service life of the expansion sleeve in the industrial brush connection process can be prolonged.

The application provides an injection molding device for automobile part machining, and belongs to the technical field of automobile part machining. The device comprises a workbench, a lower mold fixedly arranged on the top of the workbench, an upper mold arranged right above the lower mold, a fixing plate connected to the top of the workbench through a lifting piece, a fixing frame connected to the bottom of the fixing plate through an elastic piece, and the upper mold is fixedly arranged on the bottom of the fixing frame. A sliding groove is arranged in the upper mold, a push rod is arranged in the sliding groove in a limited sliding mode, a gas storage tank is fixedly arranged on the bottom of the workbench, a sliding plate is arranged in the gas storage tank in a limited sliding mode, a first spring is arranged between the sliding plate and the gas storage tank, the inner part of the gas storage tank is divided into a first chamber and a second chamber by the sliding plate, the first chamber is in communication with the cavity, a sealing plug is arranged on the communication part in a sliding sealing mode, and a linkage assembly is arranged between the fixing plate and the workbench. The storage and discharge cooling of air can be realized by controlling the descent of the fixing plate, and multiple independent driving sources are not needed.

An airbox for a fuel cell system includes an airbox body having an airflow inlet and an airflow outlet positioned therein. The airbox body includes at least one interior wall. An airbox cover is installed to the airbox body to enclose the airbox, and one or more liner plates are installed onto the at least one interior wall to prevent egress of debris from an interior of the airbox to an exterior of the airbox through the at least one interior wall.

The invention relates to a gas tank control method and system, a terminal and a storage medium, and relates to the technical field of electrical equipment, and the method comprises the steps: obtaining the temperature and humidity in a gas tank, and calculating the moisture content according to the humidity; acquiring a pressure value of the gas tank; calculating the actual density of the gas in the gas tank according to the pressure value, the moisture content and the temperature; calculating a theoretical pressure difference range corresponding to the working frequency of the blower device based on the actual density; the gas pressure difference value of the two sides of the filtering assembly is obtained through a pressure difference sensor; under the condition that the gas pressure difference value exceeds the theoretical pressure difference range, filter cotton replacement prompt information is generated. The blower device is controlled to operate according to signals of the temperature and humidity sensor, and dry air treated by the dehumidifier is fed into the air box; and meanwhile, the opening degree of the electromagnetic proportional valve is adjusted based on feedback of the pressure detection device, damp and hot gas is exhausted, gas replacement is achieved by coordinating gas inlet and gas exhaust, and the cooling and dehumidification effects are achieved while the positive pressure value of the gas tank is maintained.

This utility model discloses a detachable lighter, relating to the field of lighters. It includes a central frame, a rotating rod mounted on the inner wall of the central frame, a head cover mounted on the outer wall of the rotating rod, an electronic clip mounted on the inner wall of the central frame, a metal plate abutting one side of the electronic clip, an electronic body attached to one side of the metal plate, a spring plate mounted on the outer wall of the electronic body, a connecting tube mounted at one end of the spring plate, and a first spring mounted on the outer wall of the connecting tube. This utility model uses a gas tank frame to lock and fix the gas tank body in place. When using the device, the gas tank frame allows for separate design of different functional modules, achieving a reduction in size and portability while meeting safety requirements. Furthermore, by replacing different gas tank bodies, it can meet the personalized needs of users and the requirements of different usage scenarios. The gas outlet needle facilitates faster connection and ventilation of the gas tank frame.

The invention provides a gas tank, thin film deposition equipment, a control method and a storage medium. The gas tank comprises a tank body, a cold air pipeline, a vaporization detector and a controller. An air inlet is formed in the box wall of the box body, and a vaporizer of a precursor is arranged in the box body. The first end of the cold air pipeline is connected with a cold air source, the second end of the cold air pipeline is connected with the air inlet of the box body, and a valve is arranged in the cold air pipeline. And the vaporization detector is configured at a gas outlet of the vaporizer. The controller is connected with the valve and the vaporization detector, and is configured to obtain the vaporization rate of the vaporizer to the precursor through the vaporization detector; and the opening degree of the valve is adjusted according to the vaporization rate, so that the environment temperature in the box body is adjusted. The vaporizing rate of the vaporizer to the precursor can be detected, the opening degree of the valve of the cold air pipeline is adjusted accordingly, sufficient vaporizing of the vaporizer to the precursor is ensured, and the problem that particle pollution is introduced into the process chamber due to insufficient vaporizing is avoided.

The invention discloses a compact environment-friendly gas-insulated totally-enclosed ring main unit, and relates to the technical field of ring main units, in particular to a compact environment-friendly gas-insulated totally-enclosed ring main unit, which comprises a cabinet body, fins, a cleaning mechanism and an engineering dry air mechanism, fins achieve heat dissipation of the cabinet body, the cleaning mechanism cleans dust on the fins through a rolling brush, a spray head at the bottom of a first pipeline can wet the rolling brush when a temperature sensor detects that the temperature exceeds 50 DEG C, and a support is matched with the spray head to move up and down to achieve the dual functions of cleaning and cooling. The engineering dry air mechanism preheats air through a heating pipe and a heating wire of a second pipeline, then the air is dehydrated and air-dried through a small thermal cycle air bellow, generated dry air is introduced into an air box for insulation arc extinguishing, and meanwhile the temperature of the air box is controlled to guarantee the insulation performance. The ring main unit is compact in structure, dry air is non-toxic and non-combustible, greenhouse effect is avoided, and the ring main unit is environment-friendly, reliable in operation and suitable for various power distribution scenes.

The utility model discloses an excess material scraping device for recycled asphalt mixture processing, which relates to the technical field of recycled asphalt mixture processing and comprises an adjusting unit. The scraping unit is arranged on the outer surface of the adjusting unit and used for cleaning, the adjusting unit comprises a moving assembly and an adjusting assembly arranged on the outer surface of the moving assembly, and the scraping unit comprises a scraping assembly arranged on the outer surface of the adjusting unit and a heating assembly arranged on the outer surface of the scraping assembly. The height of the scraping unit can be adjusted through mutual cooperation of the movable frame, the fixed plate, the positive and negative motor, the lead screw, the limiting sliding rod and the lifting plate; the gas tank, the soft connecting pipe, the gas distribution box, the driving motor, a coupler, a connecting rod, a sleeve, a moving plate, a breather pipe, a flame projector, a mounting plate, an adjusting rod, a scraping plate and a fixing bolt are matched with one another, so that the interior of the recycled asphalt mixture storage device can be cleaned, and the practicability of the scraping device is improved.

This utility model discloses an SF6 gas-insulated ring main unit, including a cabinet, side plates on both sides of the cabinet, and a gas box installed on the cabinet. A vent is provided at the bottom of the gas box, and an explosion-proof valve is installed at the vent. A diaphragm is provided in the middle of the explosion-proof valve, and a sealing ring is provided between the explosion-proof valve and the gas box. A gas collecting hopper is installed at the bottom of the explosion-proof valve, and a spiral tube is connected to the bottom of the gas collecting hopper. A gas cylinder is located inside the cabinet, and a one-way valve is installed on the gas cylinder. A three-way valve is installed at one end of the spiral tube, and an exhaust connector is provided at one end of the three-way valve. This utility model, through the gas collecting hopper, spiral tube, three-way valve, one-way valve, and gas cylinder, can collect and store the gas released from the gas box, preventing it from leaking to the outside and affecting the health of workers. Furthermore, residual gas in the gas box can be extracted through the exhaust connector, ensuring that the gas in the gas box is completely emptied, facilitating subsequent disassembly and maintenance of the gas box.

The utility model discloses an ignition device which comprises an outer shell, a gas box and an ignition piece are arranged in the outer shell, an inner cavity used for storing fuel gas is arranged in the gas box, a gas outlet piece is communicated with the gas box, an operation piece used for opening and closing the gas outlet piece and controlling the ignition piece is arranged on the outer shell, and an ignition groove is formed in one end of the outer shell. A plurality of open fire openings and straight flushing openings capable of jetting flames to the center of the ignition groove are formed in the inner wall of the ignition groove at intervals, open fire spray heads and straight flushing spray heads corresponding to the open fire openings and the straight flushing openings in position are arranged in the shell, and the gas outlet piece comprises a first gas nozzle and a second gas nozzle which supply gas to the open fire spray heads and the straight flushing spray heads respectively. According to the utility model, the open fire and the direct-flushing flame are combined for use, the advantages of the open fire and the direct-flushing flame can be combined, and more efficient and more accurate ignition and combustion effects can be achieved.

The application belongs to the technical field of ring main unit equipment, and discloses a compact modular ring main unit with cable testing function and interlocking. The ring main unit comprises a cable chamber, an air tank core unit fixed on the top of the cable chamber, a mechanism chamber installed on the front part of the air tank core unit, and a control box chamber of special-shaped design installed on the top of the mechanism chamber; a left load switch mechanism cover plate, a left detection facility cover plate, a circuit breaker switch mechanism cover plate, a right load switch mechanism cover plate and a right detection facility cover plate are respectively installed in front of the mechanism chamber; mechanical interlocks are arranged between the left and right detection facility cover plates and the grounding mechanism; and interlocking devices of manual operation are arranged between the left and right load switch mechanism cover plates and the left and right detection facility cover plates. The application enables the ring main unit product to have modularization and standardization design.

The invention relates to an access control system for a smart community, the access control system comprises a main body and a revolving door, one side of the main body is provided with a pedal, the bottom of the pedal is provided with an air pumping box, one side of the air pumping box is provided with an air pipe, and the other end of the air pipe is provided with an air bag; according to the access control system for the smart community, through the cooperative use of the pedal, the hydraulic column, the first hydraulic pipe, the first movable pipe and the wedge-shaped block, in the travel peak period, pedestrians pass through the pedal and step down the pedal, the hydraulic column is compressed downwards, hydraulic oil flows in the first hydraulic pipe, the first movable pipe is driven to move upwards, and the first movable pipe is driven to move upwards; when the recognition instrument collects face data to open the revolving door and the revolving door moves to be in contact with the wedge-shaped block, the wedge-shaped block rotates and does not hinder rotation of the revolving door, and when a person passes and the revolving door is closed, the wedge-shaped block makes contact with the wedge-shaped block and hinders closing of the revolving door. The effect of prolonging the closing time of the revolving door is achieved.

The application provides a wharf pipe trench gas detection device, and relates to the technical field of gas detection, which comprises a gas detector and a gas collection assembly. The gas collection assembly comprises a gas collection box. A collection gas pump is installed on the left side of the inner cavity of the gas collection box. The output end of the collection gas pump is connected with the gas detector through a gas conveying pipe. A gas suction pipe is installed on the gas suction hole of the collection gas pump. The tail end of the gas suction pipe is connected with a gas collection pipe through a rotary joint. A winding assembly is installed on the inner side of the middle part of the gas collection box. The winding assembly comprises a support frame. A winding wheel is movably installed on the inner side of the middle part of the support frame. The gas collection pipe is wound or unwound by the winding assembly. The inlet end of the gas collection pipe can be lowered to the bottom of the pipe trench and close to the water surface. Therefore, the gas detector can directly collect and detect the gas close to the water surface at the bottom of the pipe trench. The accuracy of the detection work of the pipe trench gas is effectively improved.