Gas leakage high-precision inspection vehicle for gas pipe network inspection and detection method

Abstract

The invention discloses a gas leakage high-precision inspection vehicle for gas pipe network inspection and a detection method, and relates to the technical field of gas leakage detection. The gas leakage high-precision inspection vehicle comprises an inspection vehicle body for inspecting a gas facility area, and further comprises a detection assembly. According to the high-precision gas leakage inspection vehicle for gas pipe network inspection and the detection method, a new upper-layer filter screen can be conveniently replaced for filtering through a shaft rod and an abutting block, and when the upper-layer filter screen needs to be replaced, a driving motor is started to drive the shaft rod to enable a connecting box to rotate; at the moment, the upper-layer filter screen is extruded by the air inlet pipe, so that a movable plate is inserted into a connecting box, then the connecting box drives the movable plate to move out the upper-layer filter screen which filters dust in the air inlet pipe, and then a new upper-layer filter screen enters the air inlet pipe through a notch under the guidance of an abutting block for subsequent filtering; the upper-layer filter screen is convenient to replace, the workload of inspection personnel is reduced, and the overall working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas leakage detection, and in particular to a high-precision gas leakage inspection vehicle and a detection method for gas pipeline network inspections. Background Art

[0002] Gas leak inspection vehicles are an important tool for modern urban gas safety management. They can quickly capture weak signals of gas leaks and accurately locate the leak points, thereby effectively reducing the occurrence of safety accidents such as gas leaks.

[0003] A gas leak detection device and an inspection vehicle disclosed in a patent application with reference publication number CN221766162U include a Beidou positioning module, an acoustic anemometer and an air inlet, wherein the air inlet is connected to an analyzer through an air inlet pipe, and the Beidou positioning module, the acoustic anemometer and the analyzer are connected to a control host installed with leakage detection software; the acoustic anemometer is installed on a magnetic round rod, and the magnetic round rod includes a wind speed rod and a base plate, a strong magnet is fixed to the bottom of the base plate, the acoustic anemometer is installed on the upper end of the wind speed rod, and the lower end of the wind speed rod is installed on the base plate, and the angle between the wind speed rod and the base plate can be adjusted, and the air intake filter assembly is fixed to the front bumper of the car at a distance of 15 cm from the ground.

[0004] However, the above-mentioned technical device filters dust through the air intake filter assembly of the air intake port to prevent them from interfering with the high-precision detection results of gas leaks, and the air intake port is installed in front of the vehicle head. When the dust concentration in the environment is high, the filter assembly will soon be covered with dust, thereby affecting its filtering effect, which may further affect the accuracy of gas leak detection. Therefore, during the inspection process, the filter assembly needs to be cleaned in time, and the filter assemblies of the existing devices mostly require manual inspection and disassembly and cleaning of the filters during the inspection process, which increases the workload of the inspectors, reduces the overall work efficiency, and has general practicality. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a high-precision gas leak inspection vehicle and detection method for gas pipeline network inspections, which solves the problem that most existing gas leak inspection vehicles require manual inspection and disassembly and cleaning of filters during the inspection process, which increases the workload of inspection personnel, reduces overall work efficiency, and has general practicality.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-precision gas leak inspection vehicle for gas pipeline network inspection, including an inspection vehicle body for inspecting gas facility areas, and also including:

[0007] A detection component is arranged on the top surface of the inspection vehicle body and is used to detect whether a gas leak occurs in the gas pipe network. A mounting plate is fixedly installed on the top surface of the inspection vehicle body, a pump-suction methane detector for detecting whether a gas leak occurs is fixedly installed on the top surface of the mounting plate, a mounting cylinder is fixedly installed on the top surface of the pump-suction methane detector, and an air intake pipe is fixedly installed on the top surface of the mounting cylinder;

[0008] A filter assembly is arranged inside the inspection vehicle body and is used for filtering dust in the air entering the pump-suction type methane detector through the air intake pipe. The filter assembly includes a shaft rod movably mounted on the bottom surface of the inner cavity of the mounting tube, three connecting boxes are fixedly mounted on the outer side of the shaft rod, and movable plates are movably mounted inside the three connecting boxes, and a connecting block is fixedly mounted on one end of the movable plate, and an upper filter screen for filtering dust in the air is fixedly mounted on the inner side of the connecting block, a notch is provided on the left side of the air intake pipe for facilitating replacement of the upper filter screen, a driving assembly is provided on the top surface of the mounting tube for driving the shaft rod to rotate to switch the upper filter screen to avoid affecting the detection result of the pump-suction type methane detector, and a cleaning brush assembly is provided inside the mounting tube for cleaning dust on the upper filter screen while switching the upper filter screen;

[0009] A dust accumulation monitoring component is arranged on the outside of the pump-suction methane detector to monitor the amount of dust on the upper filter screen;

[0010] A collecting assembly is arranged inside the mounting cylinder and is used to collect dust cleaned from the upper filter screen;

[0011] The dust protection component is arranged inside the mounting tube to prevent dust from entering the pump-suction methane detector from the air intake pipe due to the gap when switching the upper filter, thereby affecting the accuracy of its detection.

[0012] Preferably, the detection assembly also includes a shield fixedly mounted on the top surface of the air intake pipe to prevent rainwater from entering the interior of the air intake pipe. The bottom end of the air intake pipe passes through the top surface of the mounting tube and is fixedly mounted on the air inlet of the pump-suction methane detector.

[0013] Preferably, the driving assembly includes a driving motor fixedly mounted on the top surface of the mounting cylinder, a shielding cover is fixedly mounted on the top surface of the mounting cylinder, and the driving motor is located inside the shielding cover to prevent the driving motor from being affected by the environment, and the top end of the shaft rod movably passes through the interior of the mounting cylinder and is fixedly mounted on the output end of the driving motor to drive the shaft rod to rotate.

[0014] Preferably, the cleaning brush assembly includes a plurality of connecting cylinders movably mounted on the top surface of the inner cavity of the mounting cylinder, and a soft brush for cleaning dust on the upper filter screen is fixedly mounted on the bottom surfaces of the plurality of connecting cylinders. A transmission assembly is provided on the outer side of the shaft rod, which can drive the cleaning brush assembly to rotate when the shaft rod rotates to clean the dust on the upper filter screen. The transmission assembly includes a driven gear ring fixedly mounted on the outer sides of the plurality of connecting cylinders, and a driving gear is fixedly mounted on the top end of the outer side of the shaft rod, and the outer side of the driving gear is meshed with the outer side of the driven gear ring.

[0015] Preferably, the filtering assembly also includes a stop block fixedly mounted on the right side of the mounting cylinder, an arc-shaped plate fixedly mounted on the inner side of the mounting cylinder, a limiting groove is provided on the inner side of the arc-shaped plate to limit the movement trajectory of the upper filter, a spring is fixedly mounted on one end of the movable plate away from the connecting block, one end of the spring is fixedly mounted on the inner side of the three connecting boxes, and the upper filter on the left side passes through the interior of the slot and extends to the interior of the intake pipe.

[0016] Preferably, the dust accumulation monitoring component includes a placement box fixedly mounted on the rear side of the pump-suction methane detector, a control module for controlling the rotation of the drive component and a battery for providing power for the normal operation of the device are fixedly mounted inside the placement box, a protective shell is fixedly mounted on the rear side of the battery, a first hot-wire anemometer is fixedly mounted inside the protective shell to protect the first hot-wire anemometer from damage, a detection end of the first hot-wire anemometer passes through the rear side of the intake pipe and extends to the interior of the intake pipe for monitoring the wind speed entering the intake pipe, a second hot-wire anemometer is fixedly mounted on the left side of the intake pipe, a detection end of the second hot-wire anemometer passes through the left side of the intake pipe and extends to the interior of the intake pipe, and the detection end of the second hot-wire anemometer is located below the slot for monitoring the air volume passing through the upper filter.

[0017] Preferably, the collecting assembly includes a collecting box movably mounted inside the mounting tube for holding the dust cleaned by the cleaning brush assembly; a connecting groove is provided on the left side of the mounting tube for conveniently pulling out the collecting box to clean the dust inside the collecting box; fixing buckles are fixedly mounted on the front and rear ends of the left side of the mounting tube; the left side of the collecting box movably passes through the interior of the connecting groove and is movably mounted on one side of the fixing buckle for fixing the position of the collecting box.

[0018] Preferably, the dust protection assembly includes a connecting frame movably mounted on the right side of the mounting tube, an arc groove is opened on the right side of the intake pipe, a sealing plate is fixedly mounted on the inside of the arc groove, a protective filter is fixedly mounted on the top surface of the left side of the sealing plate for filtering out dust that enters the soft brush when switching the filter removal assembly, and a polymer filter is fixedly mounted on the bottom surface of the left side of the sealing plate for filtering moisture in the air; handles are fixedly mounted on the front and rear sides of the right side of the connecting frame, and a limiting buckle is fixedly mounted on the right side of the mounting tube, the right side of the connecting frame movably passes through the interior of the mounting tube and is fixedly mounted on the left side of the handle for conveniently pulling the handle to drive the connecting frame to pull out the protective filter and the polymer filter for cleaning, the outer sides of the protective filter and the polymer filter are tightly attached to the interior of the intake pipe, and the left side of the connecting frame is fixedly mounted on the right side of the sealing plate, and the bottom end of the limiting buckle is movably mounted on the right side of the connecting frame for fixing the position of the connecting frame.

[0019] The present invention also discloses a gas leakage high-precision inspection vehicle detection method for gas pipeline network inspection, which specifically includes the following steps:

[0020] Step 1: Install the device on the top surface of the inspection vehicle through the mounting plate, and then the staff starts the inspection vehicle to inspect the gas pipeline area;

[0021] Step 2: Start the pump-suction methane detector and suck the surrounding air into the pump-suction methane detector through the intake pipe to detect whether there is methane. When the air enters the pump-suction methane detector through the intake pipe, the dust in the air will be filtered out by the filter component, and then the moisture in the air will be filtered out by the dust protection component before entering the pump-suction methane detector for detection;

[0022] Step 3: When the pump-suction methane detector is testing, the dust monitoring component can monitor the wind speed after filtering by the filter component to determine how much dust has accumulated. Then, the dust monitoring component controls the drive component to start and drive the filter component to switch the upper filter. At this time, the dust protection component can prevent dust from entering the interior of the pump-suction methane detector when switching the filter component.

[0023] Step 3: When the driving assembly drives the dusty upper filter out of the intake pipe, it will drive the new upper filter into the intake pipe to complete the replacement, and filter the air that subsequently enters the pump-suction methane detector through the intake pipe.

[0024] Preferably, when the driving assembly rotates, the cleaning brush assembly can be driven to rotate through the transmission assembly to clean the dust on the upper filter screen.

[0025] Beneficial Effects

[0026] The present invention provides a high-precision gas leakage inspection vehicle and a detection method for gas pipeline network inspection.

[0027] Compared with the prior art, it has the following beneficial effects:

[0028] 1. The high-precision gas leakage inspection vehicle and detection method for gas pipeline inspection facilitates the replacement of a new upper filter for filtering through the provided shaft and the stop block. When the upper filter needs to be replaced, the drive motor is started to drive the shaft to rotate the connecting box. At this time, the upper filter will be squeezed by the intake pipe so that the movable plate is inserted into the interior of the connecting box. Then the connecting box will drive the movable plate to remove the upper filter that has filtered the dust in the intake pipe. Then the new upper filter will enter the interior of the intake pipe through the notch guided by the stop block for subsequent filtration, which facilitates the replacement of the upper filter, reduces the workload of the inspection personnel, and improves the overall work efficiency.

[0029] 2. The high-precision gas leakage inspection vehicle and detection method for gas pipeline inspection facilitates the cleaning of the upper filter by means of the arranged active gear and soft brush. When the driving motor is started to drive the shaft to rotate and drive the upper filter to move, the active gear will be driven to rotate at the same time, and then the active gear will drive the driven gear ring to drive the connecting tube to rotate, and then the connecting tube will drive the soft brush to rotate, and when the upper filter passes under the soft brush, the dust on the upper filter will be cleaned and scraped off, which is convenient, fast and practical.

[0030] 3. The high-precision gas leak inspection vehicle and detection method for gas pipeline inspection can prevent dust from entering the interior of the pump-suction methane detector when switching the upper filter through the set protective filter and polymer filter. When switching the upper filter, gaps will be generated in the intake pipe. At this time, the protective filter can filter the dust in the air to enter the interior of the pump-suction methane detector. At the same time, the polymer filter can filter the moisture in the air to prevent dust from entering the interior of the pump-suction methane detector to affect the detection accuracy, thereby improving the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional appearance schematic diagram of the present invention;

[0032] Figure 2 It is a schematic diagram of the three-dimensional appearance of the detection component of the present invention;

[0033] Figure 3 It is a schematic diagram of the rear cross-sectional three-dimensional appearance of the detection component of the present invention;

[0034] Figure 4 It is a three-dimensional appearance schematic diagram of the filtering component of the present invention;

[0035] Figure 5It is a front cross-sectional three-dimensional appearance schematic diagram of the filtering assembly of the present invention;

[0036] Figure 6 For the present invention Figure 5 The enlarged appearance diagram at A in the middle;

[0037] Figure 7 It is a top view cross-sectional three-dimensional appearance schematic diagram of the filtering assembly of the present invention;

[0038] Figure 8 It is a partial cross-sectional three-dimensional appearance schematic diagram of the filtering component of the present invention;

[0039] Fig. 9 It is a bottom-up sectional three-dimensional appearance schematic diagram of the present invention;

[0040] Fig.10 For the present invention Fig. 9 The enlarged appearance diagram at B in the middle.

[0041] In the figure: 1-inspection vehicle body, 21-detection component, 211-mounting plate, 212-pump suction methane detector, 213-mounting cylinder, 214-intake pipe, 215-shield, 22-filter assembly, 221-arc plate, 222-limiting groove, 223-driven gear ring, 224-soft brush, 225-shielding cover, 226-driving motor, 227-shaft rod, 228-driving gear, 229-connection box, 2210-upper filter, 2211-connection block, 2212-notch, 2213-block, 2214-active Moving plate, 2215-spring, 2216-connecting tube, 23-dust monitoring assembly, 231-placing box, 232-control module, 233-protective shell, 234-battery, 235-first hot wire anemometer, 236-second hot wire anemometer, 24-collecting assembly, 241-collecting box, 242-fixing buckle, 243-connecting groove, 25-dust protection assembly, 251-handle, 252-limiting buckle, 253-connecting frame, 254-arc groove, 255-sealing plate, 256-protective filter, 257-polymer filter. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] See also Figure 1-Figure 10 , the present invention provides three technical solutions:

[0044] The first embodiment: a high-precision gas leak inspection vehicle for gas pipeline network inspection, comprising an inspection vehicle body 1 for inspecting a gas facility area, and further comprising:

[0045] The detection component 21 is arranged on the top surface of the inspection vehicle body 1 and is used to detect whether there is a gas leak in the gas pipeline network. A mounting plate 211 is fixedly installed on the top surface of the inspection vehicle body 1. A pump-suction methane detector 212 for detecting whether there is a gas leak is fixedly installed on the top surface of the mounting plate 211. The pump-suction methane detector 212 is an existing device. The pump-suction methane detector 212 uses a built-in pump device to suck the air in the environment to be tested into the pump-suction methane detector 212 by a pump suction method to obtain a gas sample in the environment for analysis and measurement. A mounting tube 213 is fixedly installed on the top surface of the pump-suction methane detector 212, and an air intake pipe 214 is fixedly installed on the top surface of the mounting tube 213.

[0046] The filter assembly 22 is arranged inside the inspection vehicle body 1 and is used to filter dust in the air entering the pump-suction methane detector 212 through the air intake pipe 214. The filter assembly 22 includes a shaft rod 227 movably mounted on the bottom surface of the inner cavity of the mounting cylinder 213. Three connecting boxes 229 are fixedly mounted on the outer side of the shaft rod 227, and the three connecting boxes 229 are evenly distributed on the outer side of the shaft rod 227 in a circumferential manner. A movable plate 2214 is movably mounted inside the three connecting boxes 229. A connecting block 2211 is fixedly mounted on one end of the movable plate 2214, and a sealing gasket is arranged on the inner side of the connecting block 2211. An upper filter 2210 for filtering dust in the air is fixedly installed on the inner side of the connecting block 2211, a notch 2212 is provided on the left side of the air inlet pipe 214 for convenient replacement of the upper filter 2210, and the left and right sides of the notch 2212 are both arc-shaped, a driving assembly is provided on the top surface of the mounting cylinder 213 for driving the shaft 227 to rotate to switch the upper filter 2210 to avoid affecting the detection result of the pump-suction methane detector 212, and a cleaning brush assembly is provided inside the mounting cylinder 213 for cleaning the dust on the upper filter 2210 while switching the upper filter 2210;

[0047] The dust accumulation monitoring component 23 is arranged outside the pump-suction methane detector 212 and is used to monitor the amount of dust on the upper filter 2210;

[0048] The collecting assembly 24 is disposed inside the mounting cylinder 213 and is used to collect dust cleaned from the upper filter screen 2210;

[0049] The dust protection component 25 is arranged inside the mounting tube 213 to prevent the gap when switching the upper filter screen 2210 from causing dust to enter the pump-suction methane detector 212 from the air intake pipe 214 to affect the accuracy of its detection. The detection component 21 also includes a shield 215 fixedly installed on the top surface of the air intake pipe 214 to prevent rainwater from entering the interior of the air intake pipe 214. The bottom end of the air intake pipe 214 passes through the top surface of the mounting tube 213 and is fixedly installed on the air inlet of the pump-suction methane detector 212. The drive component includes a drive fixedly installed on the top surface of the mounting tube 213. The top surface of the mounting tube 213 is fixedly mounted with a shielding cover 225, and the driving motor 226 is located inside the shielding cover 225 to prevent the driving motor 226 from being affected by the environment. The top end of the shaft 227 movably penetrates the interior of the mounting tube 213 and is fixedly mounted at the output end of the driving motor 226 to drive the shaft 227 to rotate, and starting the driving motor 226 to drive the shaft 227 can make the three connecting boxes 229 rotate, and at this time the three connecting boxes 229 will drive the connecting block 2211 to move the upper filter screen 2210 that has filtered the dust out of the intake pipe 21 4, and the elastic force of the spring 2215 will drive the movable plate 2214 to make the outer side of the upper filter 2210 fit the inner side of the limit groove 222 to limit its running track. At the same time, the new upper filter 2210 will be squeezed by the stop block 2213 to make the movable plate 2214 enter the interior of the connecting box 229, and the upper filter 2210 will enter the interior of the intake pipe 214 through the notch 2212. The filter assembly 22 also includes a stop block 2213 fixedly installed on the right side of the mounting cylinder 213, and the front and rear ends of the stop block 2213 are The sides are all inclined to facilitate the upper filter 2210 to enter the interior of the intake pipe 214 through the slot 2212. An arc plate 221 is fixedly installed on the inner side of the mounting tube 213. A limiting slot 222 is provided on the inner side of the arc plate 221 to limit the movement trajectory of the upper filter 2210. A spring 2215 is fixedly installed on one end of the movable plate 2214 away from the connecting block 2211. One end of the spring 2215 is fixedly installed on the inner side of the three connecting boxes 229. The upper filter 2210 on the left side passes through the interior of the slot 2212 and extends to the interior of the intake pipe 214.

[0050] The shaft 227 and the stop block 2213 are provided to facilitate replacement of the new upper filter 2210 for filtering. When the upper filter 2210 needs to be replaced, the drive motor 226 is started to drive the shaft 227 to rotate the connecting box 229. At this time, the upper filter 2210 will be squeezed by the intake pipe 214 so that the movable plate 2214 is inserted into the interior of the connecting box 229. Then the connecting box 229 will drive the movable plate 2214 to remove the upper filter 2210 that has filtered the dust in the intake pipe 214. Then the new upper filter 2210 will enter the interior of the intake pipe 214 through the slot 2212 under the guidance of the stop block 2213 for subsequent filtration, which facilitates the replacement of the upper filter 2210, reduces the workload of inspection personnel, and improves overall work efficiency.

[0051] The second embodiment is mainly different from the first embodiment in that: the cleaning brush assembly includes a plurality of connecting cylinders 2216 movably mounted on the top surface of the inner cavity of the mounting cylinder 213, and the bottom surfaces of the plurality of connecting cylinders 2216 are fixedly mounted with soft brushes 224 for cleaning the dust on the upper filter screen 2210, and a transmission assembly is arranged on the outer side of the shaft 227, which can drive the cleaning brush assembly to rotate when the shaft 227 rotates to clean the dust on the upper filter screen 2210, and the transmission assembly includes a driven gear ring 223 fixedly mounted on the outer side of the plurality of connecting cylinders 2216, and a driving gear 228 is fixedly mounted on the top of the outer side of the shaft 227, and the outer side of the driving gear 228 is meshed with the outer side of the driven gear ring 223, and the radius of the driving gear 228 is smaller than that of the driven gear ring 223. The radius of the driven gear ring 223 is large. When the driving gear 228 rotates, the driven gear ring 223 can make the connecting tube 2216 drive the soft brush 224 to rotate to clean the dust on the upper filter 2210, and when the upper filter 2210 passes through the soft brush 224, most of the dust will be scraped off. The dust monitoring component 23 includes a placement box 231 fixedly installed on the rear side of the pump-suction methane detector 212, and a control module 232 for controlling the rotation of the drive component and a battery 234 for providing normal operation of the device are fixedly installed inside the placement box 231. There is no requirement for the specific model of the control module 232, as long as it can control the rotation of the drive motor 226. A protective shell 23 is fixedly installed on the rear side of the battery 234. 3. A first hot-wire anemometer 235 is fixedly installed inside the protective shell 233 to protect the first hot-wire anemometer 235 from damage. The detection end of the first hot-wire anemometer 235 passes through the rear side of the air intake pipe 214 and extends to the inside of the air intake pipe 214 to monitor the wind speed entering the inside of the air intake pipe 214. A second hot-wire anemometer 236 is fixedly installed on the left side of the air intake pipe 214, and there is no specific requirement for the models of the first hot-wire anemometer 235 and the second hot-wire anemometer 236. The first hot-wire anemometer 235 and the second hot-wire anemometer 236 are electrically connected to the input end of the controller inside the inspection vehicle body 1. The principle of the first hot-wire anemometer 235 and the second hot-wire anemometer 236 is that when air flows through the first hot-wire anemometer 235 and the second hot-wire anemometer 236, the cooling effect of the air on the sensor will cause the temperature of the sensor to change. The first hot-wire anemometer 235 and the second hot-wire anemometer 236 can determine the speed of the air flow by measuring the change in temperature, and judge the amount of dust on the upper filter 2210 according to the speed difference of the detected air flow. The detection end of the second hot-wire anemometer 236 passes through the left side of the intake pipe 214 and extends to the inside of the intake pipe 214, and the detection end of the second hot-wire anemometer 236 is located below the slot 2212 to monitor the air volume passing through the upper filter 2210. The collecting assembly 24 includes a collecting box 241 movably installed inside the mounting tube 213 to hold the dust cleaned by the cleaning assembly.A connecting groove 243 is provided on the left side of the installation tube 213 for conveniently pulling out the collection box 241 to clean the dust inside the collection box 241. The front and rear ends of the left side of the installation tube 213 are fixedly installed with fixing buckles 242. The left side of the collection box 241 movably passes through the interior of the connecting groove 243 and is movably installed on one side of the fixing buckle 242 to fix the position of the collection box 241.

[0052] The driving gear 228 and the soft brush 224 are provided to facilitate cleaning of the upper filter 2210. When the driving motor 226 is started to drive the shaft 227 to rotate and drive the upper filter 2210 to move, the driving gear 228 will be driven to rotate at the same time. Then the driving gear 228 will drive the driven gear ring 223 to drive the connecting tube 2216 to rotate. At this time, the connecting tube 2216 will drive the soft brush 224 to rotate. When the upper filter 2210 passes under the soft brush 224, the dust on the upper filter 2210 will be cleaned and scraped off. It is convenient, fast and practical.

[0053] The third embodiment is mainly different from the second embodiment in that: the dust protection component 25 includes a connecting frame 253 movably mounted on the right side of the mounting tube 213, an arc groove 254 is opened on the right side of the air inlet pipe 214, a sealing plate 255 is fixedly mounted inside the arc groove 254, and a sealing gasket is fixedly mounted on the outer side of the sealing plate 255 to improve the sealing performance with the arc groove 254, a protective filter 256 is fixedly mounted on the top surface of the left side of the sealing plate 255 to filter out dust entering the soft brush 224 when switching the filter assembly 22, a polymer filter 257 is fixedly mounted on the bottom surface of the left side of the sealing plate 255 to filter moisture in the air, and the front and rear sides of the right side of the connecting frame 253 are fixed. A handle 251 is fixedly installed, and a limiting buckle 252 is fixedly installed on the right side of the installation cylinder 213. The right side of the connecting frame 253 movably passes through the interior of the installation cylinder 213 and is fixedly installed on the left side of the handle 251, so that the handle 251 is pulled conveniently to drive the connecting frame 253 to pull out the protective filter 256 and the polymer filter 257 for cleaning. The outer sides of the protective filter 256 and the polymer filter 257 are tightly attached to the inside of the intake pipe 214. The left side of the connecting frame 253 is fixedly installed on the right side of the sealing plate 255. The bottom end of the limiting buckle 252 is movably installed on the right side of the connecting frame 253 to fix the position of the connecting frame 253, and the position of the connecting frame 253 can be fixed by the limiting buckle 252.

[0054] By setting up the protective filter 256 and the polymer filter 257, dust can be prevented from entering the interior of the pump-suction methane detector 212 when the upper filter 2210 is switched. When the upper filter 2210 is switched, a gap will be generated in the air intake pipe 214. At this time, the protective filter 256 can filter the dust in the air to enter the interior of the pump-suction methane detector 212. At the same time, the polymer filter 257 can filter the moisture in the air, thereby preventing dust from entering the interior of the pump-suction methane detector 212 and affecting the detection accuracy, thereby improving the accuracy of the detection.

[0055] The present invention also discloses a gas leakage high-precision inspection vehicle detection method for gas pipeline network inspection, which specifically includes the following steps:

[0056] Step 1: Install the device on the top surface of the inspection vehicle body 1 through the mounting plate 211, and then the staff starts the inspection vehicle body 1 to inspect the gas pipe network area;

[0057] Step 2: At this time, the pump-suction methane detector 212 is started to suck the surrounding air into the pump-suction methane detector 212 through the air inlet pipe 214 to detect whether there is methane. When the air enters the pump-suction methane detector 212 through the air inlet pipe 214, it passes through the upper filter 2210 to filter out dust in the air, and then passes through the polymer filter 257 to filter out moisture in the air before entering the pump-suction methane detector 212 for detection, so as to prevent dust and moisture in the air from affecting the detection result of the pump-suction methane detector 212;

[0058] Step 3: When the pump-suction methane detector 212 is detecting, the wind speed flowing through the intake pipe 214 can be monitored by the first hot-wire anemometer 235, and the second hot-wire anemometer 236 will monitor the flow rate of the air after filtering through the upper filter 2210. Then, the controller inside the inspection vehicle body 1 compares the wind speed detected by the first hot-wire anemometer 235 with the wind speed detected by the second hot-wire anemometer 236 to determine how much dust has accumulated on the upper filter 2210. When the wind speed difference is large, the control module 232 will start the drive motor 226 to drive the shaft 2 27 makes the connection box 229 rotate, and the upper filter screen 2210 is squeezed by the air inlet pipe 214, so that the movable plate 2214 is inserted into the connection box 229, and then the connection box 229 drives the movable plate 2214 to move the upper filter screen 2210 that has filtered the dust in the air inlet pipe 214 out, and when the upper filter screen 2210 is switched, a gap will be generated in the air inlet pipe 214, and at this time, the protective filter screen 256 can filter the dust in the air to enter the interior of the pump-suction type methane detector 212, so as to prevent the dust from entering the interior of the pump-suction type methane detector 212 and affecting the detection accuracy;

[0059] Step 4: When the drive motor 226 is started to drive the shaft 227 to rotate and drive the upper filter 2210 to move, the driving gear 228 will also be driven to rotate, and then the driving gear 228 will drive the driven gear ring 223 to drive the connecting tube 2216 to rotate, and then the connecting tube 2216 will drive the soft brush 224 to rotate, and when the upper filter 2210 passes under the soft brush 224, the dust on the upper filter 2210 will be cleaned and scraped into the collection box 241 for collection, and then The new upper filter 2210 will then enter the interior of the intake pipe 214 through the slot 2212 guided by the stop block 2213, and then the control module 232 will turn off the drive motor 226 to fix the position of the upper filter 2210, and filter the air that subsequently enters the pump-suction methane detector 212 through the intake pipe 214. When it is necessary to clean the dust in the collection box 241, open the fixing buckle 242 and pull the collection box 241 out of the mounting tube 213 for cleaning.

[0060] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision gas leak inspection vehicle for gas pipeline network inspection, including an inspection vehicle body for inspecting gas facility areas, characterized in that: Also includes: A detection component is arranged on the top surface of the inspection vehicle body and is used to detect whether a gas leak occurs in the gas pipe network. A mounting plate is fixedly installed on the top surface of the inspection vehicle body, a pump-suction methane detector for detecting whether a gas leak occurs is fixedly installed on the top surface of the mounting plate, a mounting cylinder is fixedly installed on the top surface of the pump-suction methane detector, and an air intake pipe is fixedly installed on the top surface of the mounting cylinder; A filter assembly is arranged inside the inspection vehicle body and is used for filtering dust in the air entering the pump-suction type methane detector through the air intake pipe. The filter assembly includes a shaft rod movably mounted on the bottom surface of the inner cavity of the mounting tube, three connecting boxes are fixedly mounted on the outer side of the shaft rod, and movable plates are movably mounted inside the three connecting boxes, and a connecting block is fixedly mounted on one end of the movable plate, and an upper filter screen for filtering dust in the air is fixedly mounted on the inner side of the connecting block, a notch is provided on the left side of the air intake pipe for facilitating replacement of the upper filter screen, a driving assembly is provided on the top surface of the mounting tube for driving the shaft rod to rotate to switch the upper filter screen to avoid affecting the detection result of the pump-suction type methane detector, and a cleaning brush assembly is provided inside the mounting tube for cleaning dust on the upper filter screen while switching the upper filter screen; A dust accumulation monitoring component is arranged on the outside of the pump-suction methane detector to monitor the amount of dust on the upper filter screen; A collecting assembly is arranged inside the mounting cylinder and is used to collect dust cleaned from the upper filter screen; The dust protection component is arranged inside the mounting tube to prevent dust from entering the pump-suction methane detector from the air intake pipe due to the gap when switching the upper filter, thereby affecting the accuracy of its detection.

2. The high-precision gas leak inspection vehicle for gas pipeline network inspection according to claim 1 is characterized by: The detection assembly also includes a shield fixedly mounted on the top surface of the intake pipe to prevent rainwater from entering the interior of the intake pipe. The bottom end of the intake pipe passes through the top surface of the mounting tube and is fixedly mounted on the air inlet of the pump-suction methane detector.

3. The high-precision gas leak inspection vehicle for gas pipeline network inspection according to claim 1 is characterized by: The driving assembly includes a driving motor fixedly mounted on the top surface of the mounting tube, a shielding cover fixedly mounted on the top surface of the mounting tube, and the driving motor is located inside the shielding cover to prevent the driving motor from being affected by the environment, and the top end of the shaft rod movably passes through the interior of the mounting tube and is fixedly mounted on the output end of the driving motor to drive the shaft rod to rotate.

4. The high-precision gas leak inspection vehicle for gas pipeline network inspection according to claim 1 is characterized by: The cleaning brush assembly includes a plurality of connecting cylinders movably mounted on the top surface of the inner cavity of the mounting cylinder, and a plurality of soft-bristle brushes for cleaning the dust on the upper filter screen are fixedly mounted on the bottom surfaces of the connecting cylinders. A transmission assembly is arranged on the outer side of the shaft rod, which can drive the cleaning brush assembly to rotate when the shaft rod rotates to clean the dust on the upper filter screen. The transmission assembly includes a driven gear ring fixedly mounted on the outer sides of the plurality of connecting cylinders, and a driving gear is fixedly mounted on the top end of the outer side of the shaft rod, and the outer side of the driving gear is meshed with the outer side of the driven gear ring.

5. The high-precision gas leak inspection vehicle for gas pipeline network inspection according to claim 1 is characterized by: The filtering assembly also includes a stop block fixedly mounted on the right side of the mounting cylinder, an arc-shaped plate fixedly mounted on the inner side of the mounting cylinder, a limiting groove is provided on the inner side of the arc-shaped plate to limit the movement trajectory of the upper filter screen, a spring is fixedly mounted on one end of the movable plate away from the connecting block, one end of the spring is fixedly mounted on the inner side of the three connecting boxes, and the upper filter screen on the left side passes through the interior of the slot and extends to the interior of the intake pipe.

6. The high-precision gas leak inspection vehicle for gas pipeline network inspection according to claim 1 is characterized by: The dust accumulation monitoring component includes a placement box fixedly installed on the rear side of the pump-suction methane detector, a control module for controlling the rotation of the drive component and a battery for providing power for the normal operation of the device are fixedly installed inside the placement box, a protective shell is fixedly installed on the rear side of the battery, a first hot-wire anemometer is fixedly installed inside the protective shell to protect the first hot-wire anemometer from damage, a detection end of the first hot-wire anemometer passes through the rear side of the intake pipe and extends to the interior of the intake pipe for monitoring the wind speed entering the intake pipe, a second hot-wire anemometer is fixedly installed on the left side of the intake pipe, a detection end of the second hot-wire anemometer passes through the left side of the intake pipe and extends to the interior of the intake pipe, and the detection end of the second hot-wire anemometer is located below the slot for monitoring the air volume passing through the upper filter.

7. The high-precision gas leak inspection vehicle for gas pipeline network inspection according to claim 1 is characterized by: The collecting assembly includes a collecting box movably mounted inside the mounting tube for holding the dust cleaned by the cleaning brush assembly; a connecting groove is provided on the left side of the mounting tube for conveniently pulling out the collecting box to clean the dust inside the collecting box; fixing buckles are fixedly mounted on both the front and rear ends of the left side of the mounting tube; the left side of the collecting box movably passes through the interior of the connecting groove and is movably mounted on one side of the fixing buckle for fixing the position of the collecting box.

8. The high-precision gas leak inspection vehicle for gas pipeline network inspection according to claim 1 is characterized by: The dust protection component includes a connecting frame movably installed on the right side of the mounting tube, an arc groove is opened on the right side of the intake pipe, a sealing plate is fixedly installed inside the arc groove, a protective filter is fixedly installed on the top surface of the left side of the sealing plate for filtering out dust that enters the soft brush when switching the filter removal component, and a polymer filter is fixedly installed on the bottom surface of the left side of the sealing plate for filtering moisture in the air; handles are fixedly installed on the front and back sides of the right side of the connecting frame, and a limiting buckle is fixedly installed on the right side of the mounting tube; the right side of the connecting frame movably passes through the interior of the mounting tube and is fixedly installed on the left side of the handle for conveniently pulling the handle to drive the connecting frame to pull out the protective filter and the polymer filter for cleaning, and the outer sides of the protective filter and the polymer filter are tightly attached to the interior of the intake pipe, and the left side of the connecting frame is fixedly installed on the right side of the sealing plate, and the bottom end of the limiting buckle is movably installed on the right side of the connecting frame for fixing the position of the connecting frame.

9. A high-precision gas leak inspection vehicle detection method for gas pipeline network inspection, characterized by: The high-precision gas leak inspection vehicle for gas pipeline network inspection according to any one of claims 1 to 8 specifically comprises the following steps: Step 1: Install the device on the top surface of the inspection vehicle through the mounting plate, and then the staff starts the inspection vehicle to inspect the gas pipeline area; Step 2: Start the pump-suction methane detector and suck the surrounding air into the pump-suction methane detector through the intake pipe to detect whether there is methane. When the air enters the pump-suction methane detector through the intake pipe, the dust in the air will be filtered out by the filter component, and then the moisture in the air will be filtered out by the dust protection component before entering the pump-suction methane detector for detection; Step 3: When the pump-suction methane detector is testing, the dust monitoring component can monitor the wind speed after filtering by the filter component to determine how much dust has accumulated. Then, the dust monitoring component controls the drive component to start and drive the filter component to switch the upper filter. At this time, the dust protection component can prevent dust from entering the interior of the pump-suction methane detector when switching the filter component. Step 4: When the driving assembly drives the dusty upper filter out of the intake pipe, it will drive the new upper filter into the intake pipe to complete the replacement, and filter the air that subsequently enters the pump-suction methane detector through the intake pipe.

10. The high-precision gas leak inspection vehicle detection method for gas pipeline network inspection according to claim 9, characterized in that: When the driving component rotates, the cleaning brush component can be driven to rotate through the transmission component to clean the dust on the upper filter screen.

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