A SF6 gas detection platform and detection method

Abstract

The invention discloses an SF6 gas detection platform and a detection method, comprising an intelligent work vehicle, wherein an SF6 gas detector is fixedly connected to the top of the intelligent work vehicle, the bottom of the SF6 gas detector is fixedly connected to the intelligent work vehicle, and an SF6 gas sampling mechanism is arranged at the bottom of the intelligent work vehicle. The invention relates to the technical field of gas detection. By arranging the SF6 gas sampling mechanism, when the difference between the SF6 gas concentration detected near a GIS device and that detected far from the GIS device is large, if the SF6 concentration in the air near the GIS device is higher, it means that there is SF6 gas leakage in the device and it is leaking, and if the SF6 gas concentration in the air near the GIS device and that in the air far from the GIS device are the same, it means that there is no leakage problem in the device at present, and if the air contains a certain SF6 gas concentration, it means that there may be leakage in other surrounding devices, thereby realizing rapid judgment and identification.

Description

Technical Field

[0001] The present invention relates to the technical field of gas detection, and in particular to a SF6 gas detection platform and a detection method. Background Art

[0002] Sulfur hexafluoride is an inorganic compound with the chemical formula SF6. It is a colorless, odorless, non-toxic, non-flammable, stable gas at room temperature and pressure. Its molecular weight is 146.055 and its density is 6.0886 kg / m at 20°C and 0.1 MPa. 3 , which is about 5 times the density of air. The molecular structure of sulfur hexafluoride is octahedral, with a small bonding distance and high bonding energy, so it has high stability. When the temperature does not exceed 180°C, its compatibility with electrical structural materials is similar to that of nitrogen.

[0003] An SF6 gas detection device described in a patent application with publication number CN110530687B comprises a base, a bracket is arranged on the base, a gas collecting barrel is arranged in the bracket, a piston is arranged in the gas collecting barrel, the piston is fixed to a piston rod, the piston rod passes through one end of the gas collecting barrel and is fixed to a first insulating rod, the other end of the gas collecting barrel is fixed to a second rod, the piston rod and the second rod are both slidably connected to the bracket, an inlet is arranged on the upper part of the gas collecting barrel, a gas one-way valve is installed in the inlet; a lifting mechanism is arranged on the bracket, the lifting mechanism is connected to an SF6 gas detector, a through hole matching the SF6 gas detector is arranged at the bottom of the bracket, and a rubber hemisphere is arranged at the bottom end of the through hole;

[0004] At present, when sampling and testing SF6 gas in relatively closed spaces where a large number of GSIs are located, staff usually use handheld air samplers to sample the air. If SF6 gas leaks unexpectedly, it is easy to cause hypoxia to the human body and cause safety hazards. However, by sampling at the door of the space through instruments, it is difficult to know which specific GSI equipment in the space has the SF6 gas leakage problem. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a SF6 gas detection platform and a detection method, which achieve the purpose of solving the above-mentioned problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an SF6 gas detection platform, including an intelligent work vehicle, a SF6 gas detector is fixedly connected to the top of the intelligent work vehicle, the bottom of the SF6 gas detector is fixedly connected to the intelligent work vehicle, and a SF6 gas sampling mechanism is provided at the bottom of the intelligent work vehicle;

[0007] The SF6 gas sampling mechanism comprises:

[0008] A connection box, the top of which is fixedly connected to the bottom of the intelligent working vehicle, the bottom of the intelligent working vehicle is fixedly connected with a central processing unit and an electric telescopic rod, the central processing unit is electrically connected to the electric telescopic rod, one end of the electric telescopic rod is fixedly connected with a piston plate, and the outer wall of the piston plate is slidably connected to the inner wall of the connection box;

[0009] A limiting ring, wherein the limiting ring is an arc-shaped plate structure, the outer wall of the limiting ring is fixedly connected to the inner wall of the intelligent work vehicle, the bottom of the inner wall of the intelligent work vehicle is fixedly connected with a fixed sleeve, the inner wall of the fixed sleeve is slidably connected with a sealing slider, the top of the sealing slider is fixedly connected to the bottom of the piston plate, the top of the piston plate is fixedly connected with a telescopic sleeve A, the inner wall of the telescopic sleeve A is slidably connected with a telescopic sleeve B, the top of the telescopic sleeve B is fixedly connected to the bottom of the intelligent work vehicle, the inner wall of the telescopic sleeve B is fixedly connected with a gas connecting pipe, one end of the gas connecting pipe passes through the intelligent work vehicle and is fixedly connected to the bottom of the SF6 gas detector.

[0010] Preferably, a one-way valve B is fixedly connected to the inner wall of the piston plate, the inner wall of the one-way valve B is connected to the inner wall of the telescopic sleeve A, the inner wall of the telescopic sleeve A is connected to the inner wall of the telescopic sleeve B, the inner wall of the telescopic sleeve B is connected to the inner wall of the gas connecting pipe, and the inner wall of the gas connecting pipe is connected to the inside of the SF6 gas detector.

[0011] Preferably, the air inlet end of the one-way valve B is connected to the bottom of the piston plate, and the air outlet end of the one-way valve B is connected to the top of the piston plate. The outer wall of the intelligent work vehicle is rotatably connected to a rotating shaft, and the outer wall of the rotating shaft is fixedly connected to a connecting plate.

[0012] Preferably, a ventilation groove A is provided at the bottom of the connecting plate, a ventilation groove B is provided on the inner wall of the rotating shaft, and a one-way valve A is fixedly connected to the inner wall of the ventilation groove B.

[0013] Preferably, the ventilation groove A is connected to the ventilation groove B, the ventilation groove A is connected to the interior of the connecting plate, the ventilation groove B is connected to the connecting plate, the air inlet end of the one-way valve A is connected to the interior of the connecting plate, and the air outlet end of the one-way valve A is connected to the interior of the intelligent work vehicle.

[0014] Preferably, a fixing plate is fixedly connected to one side of the connecting plate, and the bottom of the piston plate is in contact with the top of the limiting ring.

[0015] Preferably, a sampling auxiliary mechanism is provided outside the connection box, and the sampling auxiliary mechanism includes a sliding telescopic sleeve, the outer wall of the sliding telescopic sleeve is fixed inside the connection box, the inner wall of the sliding telescopic sleeve is provided with a vent hole, and the inner wall of the vent hole is connected to the interior of the intelligent work vehicle.

[0016] Preferably, a pull plate is fixedly connected to the outer wall of the sliding telescopic sleeve, one end of the pull plate is fixedly connected to a connecting strip, and the outer wall of the connecting strip is fixedly connected to an elastic fabric.

[0017] Preferably, the outer wall of the elastic cloth is fixedly connected with a fixing block, the outer wall of the fixing block is fixedly connected to the outer wall of the connection box, and the elastic cloth is elastic.

[0018] Preferably, a pull rope is fixedly connected to the bottom of the connecting strip, the outer wall of the pull rope contacts a hinge block B, the outer wall of the hinge block B is fixedly connected to the outer wall of the connecting box, one end of the pull rope is fixedly connected to the outer wall of the fixed plate, and the outer wall of the hinge block B is hinged with a hinge rod.

[0019] Preferably, an articulated block A is hingedly connected to one end of the articulated rod, a scraper sleeve is fixedly connected to the outer wall of the articulated block A, and the inner wall of the scraper sleeve is slidably connected to the outer wall of the connecting plate.

[0020] Preferably, the connection box is a circular barrel-shaped structure, the connection strip is an arc-shaped strip-shaped structure, and the outer wall of the connection strip does not contact the outer wall of the connection box.

[0021] Preferably, the ventilation groove A is a rectangular groove, the interior of the ventilation groove A is connected to the exterior of the connecting plate, and the scraper sleeve is a stepped sleeve structure.

[0022] Preferably, small holes are formed on the surface of the elastic fabric, and the elastic fabric increases its elastic expansion through the small holes on the inner wall.

[0023] A SF6 gas detection method:

[0024] S1: The intelligent working vehicle is started by remote control and enters a space where a large number of GIS equipment are working. Then the intelligent working vehicle is controlled remotely to make it close to the GIS equipment. At this time, the remote control sends a signal to the central processor, and the central processor receives the signal and sends a command to the electric telescopic rod.

[0025] S2: The electric telescopic rod starts to extend and retract after receiving the command. When the electric telescopic rod retracts first, it will pull the piston plate to slide up in the intelligent work vehicle, and draw the air between the piston plate and the bottom of the inner wall of the intelligent work vehicle through the ventilation groove A at the bottom of the connecting plate into the one-way valve A in the rotating shaft, and then enter the intelligent work vehicle. The rising piston plate will drive the sealing slider in the fixed sleeve to rise synchronously and slide in the fixed sleeve, thereby dividing the space in the intelligent work vehicle into four parts, each part corresponds to an air connecting channel connecting a connecting plate and the ventilation groove A, so that the air around the intelligent work vehicle can be sampled and tested separately.

[0026] The present invention provides a SF6 gas detection platform and detection method, which have the following beneficial effects:

[0027] 1. The present invention sets an SF6 gas sampling mechanism, and four gas connecting pipes correspond to enter the SF6 gas detector to perform separate SF6 air detection. By sampling the air in multiple directions around the intelligent work vehicle, the SF6 concentration in the air near the GIS device and far away from the GIS device can be differentially detected. The difference in SF6 gas concentration detected near the GIS device and far away from the GIS device is large. If the SF6 concentration in the air near the GIS device is higher, it means that there is SF6 gas leakage in the device and it is leaking. If the SF6 gas concentration in the air near the GIS device and far away from the GIS device is the same, it means that there is no leakage problem in the device at present. If the air contains a certain SF6 gas concentration, it means that other surrounding devices may have leakage, thereby achieving rapid judgment and identification.

[0028] 2. The present invention provides an SF6 gas sampling mechanism, which is arranged at the bottom of the intelligent work vehicle, and the ventilation groove A at the air inlet position is arranged below the connecting plate, so as to perform corresponding extraction according to the characteristic that SF6 gas, which has a mass five times that of air and sinks, also avoids the difficulty of operation caused by the need to extract the air at the bottom of the distribution room space without touching the ground when the staff manually extracts the gas. Once the air sampling mechanism touches the ground, dust on the ground will be sucked into the detector, affecting the subsequent air quality detection. At the same time, it also avoids the problem of hypoxia caused by the staff inhaling the air containing SF6 at the bottom when squatting to operate.

[0029] 3. The present invention provides a sampling auxiliary mechanism to avoid the situation where, when the air is quickly extracted, the air around the ventilation slot A, including the air above, is instantly drawn into the ventilation slot A due to the fast extraction speed, and the air at the bottom layer of the space cannot be completely sampled, thereby affecting the detection of SF6 air. Through the expansion of the elastic cloth, a large amount of air above is blocked by the elastic cloth when it is sucked into the ventilation slot A under negative pressure, and thus needs to detour into the ventilation slot A below. At this time, since the coverage area of ​​the elastic cloth is increased, the rapid extraction of air from the ventilation slot A will draw the bottom layer of air in a larger area covered by the elastic cloth into the intelligent work vehicle, thereby reducing the amount of non-SF6 air extracted above during rapid extraction, and avoiding the error of low SF6 air detection concentration caused by rapid sampling.

[0030] 4. The present invention sets a sampling auxiliary mechanism. When the air is sampled quickly, the sliding telescopic sleeve is pushed out, and then the fixed plate on one side of the connecting plate is pulled by the pull plate and the connecting strip to bypass the hinge block B, so that the connecting plate is pulled to drive the rotating shaft to rotate and lift. By lifting the connecting plate at this time, the contact distance with the ground is widened, so as to prevent the dust particles on the ground at the bottom of the ventilation groove A from being sucked into the intelligent work vehicle when the piston plate rises quickly to extract air with high-intensity negative pressure, and to avoid a large amount of impurities affecting the real-time detection accuracy of SF6 air concentration by the SF6 gas detector when the air is extracted close to the ground with high intensity;

[0031] 5. The present invention sets a sampling auxiliary mechanism to limit the rotation range of the connecting plate to prevent excessive rotation. At this time, the scraper sleeve slides to the fixed plate to open the part previously covered by the scraper sleeve, thereby reducing the situation in which the dust below is sucked into the intelligent work vehicle due to the small opening of the ventilation groove A when high-pressure air is extracted. Under normal slow-speed air sampling and extraction work, the scraper sleeve covers half of the ventilation groove A through the descent of the connecting plate, thereby realizing accurate sampling of the air below in a small range. In this way, the problem of the four connecting plates being unable to realize differentiated detection of air in different spatial areas due to the large sampling range is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the present invention;

[0033] Figure 2 It is a structural schematic diagram of the intelligent working vehicle of the present invention;

[0034] Figure 3 It is a structural schematic diagram of the SF6 gas sampling mechanism of the present invention;

[0035] Figure 4 It is a schematic cross-sectional structure diagram of the SF6 gas sampling mechanism of the present invention;

[0036] Figure 5 For the present invention Figure 4 A magnified image of point A;

[0037] Figure 6 It is a schematic diagram of the disassembled structure of the SF6 gas sampling mechanism of the present invention;

[0038] Figure 7 The motion state of the SF6 gas sampling mechanism of the present invention is Figure 1 ;

[0039] Figure 8 The motion state of the SF6 gas sampling mechanism of the present invention is Figure 2 ;

[0040] Fig. 9 The structure of the sampling auxiliary mechanism of the present invention is shown in FIG. Figure 1 ;

[0041] Fig.10 The structure of the sampling auxiliary mechanism of the present invention is shown in FIG. Figure 2 ;

[0042] Fig.11 The cross-sectional structure of the sampling auxiliary mechanism of the present invention is shown in FIG. Figure 1 ;

[0043] Fig.12 The structure of the sampling auxiliary mechanism of the present invention is shown in FIG. Figure 3 ;

[0044] Fig.13 The cross-sectional structure of the sampling auxiliary mechanism of the present invention is shown in FIG. Figure 2 ;

[0045] Fig.14 The cross-sectional structure of the sampling auxiliary mechanism of the present invention is shown in FIG. Figure 3 ;

[0046] Fig.15 It is a system block diagram of the present invention.

[0047] In the figure: 1. SF6 gas detector; 2. Intelligent working vehicle; 3. SF6 gas sampling mechanism; 301. Connection box; 302. Central processing unit; 303. Electric telescopic rod; 304. Piston plate; 305. Sealing slider; 306. Fixed sleeve; 307. Limiting ring; 308. Rotating shaft; 309. Connection plate; 310. Ventilation groove A; 311. Ventilation groove B; 312. One-way valve A; 313. 3. One-way valve B; 314. Telescopic sleeve A; 315. Telescopic sleeve B; 316. Fixed plate; 4. Sampling auxiliary mechanism; 401. Sliding telescopic sleeve; 403. Vent; 405. Pull plate; 406. Connecting strip; 407. Elastic fabric; 408. Fixed block; 409. Pull rope; 411. Scraping sleeve; 412. Articulated block A; 413. Articulated rod; 414. Articulated block B; 6. Gas connecting pipe. DETAILED DESCRIPTION

[0048] Example 1: Please refer to Figure 1-4 The present invention provides a technical solution: an SF6 gas detection platform, comprising an intelligent work vehicle 2, a SF6 gas detector 1 is fixedly connected to the top of the intelligent work vehicle 2, the bottom of the SF6 gas detector 1 is fixedly connected to the intelligent work vehicle 2, and a SF6 gas sampling mechanism 3 is arranged at the bottom of the intelligent work vehicle 2;

[0049] The SF6 gas sampling mechanism 3 includes:

[0050] A connection box 301, the top of which is fixedly connected to the bottom of the intelligent working vehicle 2, a central processing unit 302 and an electric telescopic rod 303 are fixedly connected to the bottom of the intelligent working vehicle 2, the central processing unit 302 is electrically connected to the electric telescopic rod 303, one end of the electric telescopic rod 303 is fixedly connected to a piston plate 304, and the outer wall of the piston plate 304 is slidably connected to the inner wall of the connection box 301;

[0051] A limiting ring 307 is an arc-shaped plate-like structure, the outer wall of the limiting ring 307 is fixedly connected to the inner wall of the intelligent working vehicle 2, the bottom of the inner wall of the intelligent working vehicle 2 is fixedly connected with a fixed sleeve 306, the inner wall of the fixed sleeve 306 is slidably connected with a sealing slider 305, the top of the sealing slider 305 is fixedly connected to the bottom of the piston plate 304, the top of the piston plate 304 is fixedly connected with a telescopic sleeve A314, the inner wall of the telescopic sleeve A314 is slidably connected with a telescopic sleeve B315, the top of the telescopic sleeve B315 is fixedly connected to the bottom of the intelligent working vehicle 2, the inner wall of the telescopic sleeve B315 is fixedly connected with a gas connecting pipe 6, one end of the gas connecting pipe 6 passes through the intelligent working vehicle 2 and is fixedly connected to the bottom of the SF6 gas detector 1;

[0052] The intelligent working vehicle 2 is started by remote control and enters a space where a large number of GIS equipment are working. Then, the intelligent working vehicle 2 is controlled remotely to make it close to the GIS equipment. At this time, a signal is sent to the central processor 302 by remote control. The central processor 302 receives the signal and sends a command to the electric telescopic rod 303. After receiving the command, the electric telescopic rod 303 starts to extend and retract. When the electric telescopic rod 303 retracts first, it will pull the piston plate 304 to slide up in the intelligent working vehicle 2, and the piston plate 304 and the intelligent working vehicle 2 are connected. The air between the bottom of the inner wall of the work vehicle 2 is drawn into the one-way valve A312 in the rotating shaft 308 through the ventilation groove A310 at the bottom of the connecting plate 309, and then enters the intelligent work vehicle 2. The rising piston plate 304 will drive the sealing slider 305 in the fixed sleeve 306 to rise synchronously and slide in the fixed sleeve 306, thereby dividing the space in the intelligent work vehicle 2 into four parts, each of which corresponds to an air connection channel connecting a connecting plate 309 and the ventilation groove A310, so as to sample and detect the air around the intelligent work vehicle 2 respectively;

[0053] Example 2: Please refer to Figure 1-8 On the basis of the first embodiment, the present invention provides a technical solution: a one-way valve B313 is fixedly connected to the inner wall of the piston plate 304, the inner wall of the one-way valve B313 is connected to the inner wall of the telescopic sleeve A314, the inner wall of the telescopic sleeve A314 is connected to the inner wall of the telescopic sleeve B315, the inner wall of the telescopic sleeve B315 is connected to the inner wall of the gas connecting pipe 6, and the inner wall of the gas connecting pipe 6 is connected to the inside of the SF6 gas detector 1.

[0054] The air inlet end of the one-way valve B313 is connected to the bottom of the piston plate 304, and the air outlet end of the one-way valve B313 is connected to the top of the piston plate 304. The outer wall of the intelligent working vehicle 2 is rotatably connected to a rotating shaft 308, and the outer wall of the rotating shaft 308 is fixedly connected to a connecting plate 309.

[0055] A ventilation groove A310 is provided at the bottom of the connecting plate 309, a ventilation groove B311 is provided on the inner wall of the rotating shaft 308, and a one-way valve A312 is fixedly connected to the inner wall of the ventilation groove B311.

[0056] The ventilation groove A310 is connected to the ventilation groove B311, the ventilation groove A310 is connected to the inside of the connecting plate 309, the ventilation groove B311 is connected to the connecting plate 309, the air inlet end of the one-way valve A312 is connected to the inside of the connecting plate 309, and the air outlet end of the one-way valve A312 is connected to the inside of the intelligent work vehicle 2.

[0057] A fixing plate 316 is fixedly connected to one side of the connecting plate 309, and the bottom of the piston plate 304 contacts the top of the limiting ring 307;

[0058] After the piston plate 304 stops rising at one end, it will continue to descend, and the air sucked in from the bottom of the piston plate 304 will be pressurized by the downward pressure of the piston plate 304, so that it enters the telescopic sleeve A314 and the telescopic sleeve B315 through the one-way valve B313, and enters the gas connecting pipe 6 through the telescopic sleeve B315. The four telescopic sleeves A314 and the fixed plate 316 correspond to the four gas connecting pipes 6, and the four gas connecting pipes 6 correspond to the SF6 gas detector 1 for separate SF6 air detection work. By sampling the air in multiple directions around the intelligent work vehicle 2, it can Differentiate the SF6 concentration in the air near and far from the GIS equipment. The difference in the SF6 gas concentration detected near and far from the GIS equipment is large. If the SF6 concentration in the air near the GIS equipment is higher, it means that the equipment has SF6 gas leakage and is leaking. If the SF6 gas concentration in the air near and far from the GIS equipment is the same, it means that the equipment currently has no leakage problem. If there is a certain SF6 gas concentration in the air, it means that other surrounding equipment may have leakage, so as to achieve rapid judgment and identification.

[0059] Since the one-way valve B313 and the one-way valve A312 restrict the one-way flow of air, the external air can only enter the intelligent working vehicle 2 through the one-way valve A312, and the air in the intelligent working vehicle 2 can only enter the telescopic sleeve A314 and the telescopic sleeve B315 through the one-way valve B313, which is used for the one-way flow of air and will not flow back;

[0060] In addition, the SF6 gas sampling mechanism 3 is arranged at the bottom of the intelligent work vehicle 2, and the ventilation slot A310 at the air inlet position is arranged below the connecting plate 309, so as to perform corresponding extraction according to the characteristic that the SF6 gas, which has a mass five times that of air and sinks, also avoids the difficulty of operation caused by the need to extract the air at the bottom of the distribution room space without touching the ground when the staff manually extracts the gas. Once the air sampling mechanism touches the ground, dust on the ground will be sucked into the detector, affecting the subsequent air quality detection. At the same time, it also avoids the problem of hypoxia caused by the staff inhaling the air containing SF6 at the bottom when squatting down to operate;

[0061] Example 3: Please refer to Figure 1-15 On the basis of Embodiment 1 and Embodiment 2, the present invention provides a technical solution: a sampling auxiliary mechanism 4 is arranged outside the connection box 301, and the sampling auxiliary mechanism 4 includes a sliding telescopic sleeve 401, the outer wall of the sliding telescopic sleeve 401 is fixed inside the connection box 301, and a vent hole 403 is opened on the inner wall of the sliding telescopic sleeve 401, and the inner wall of the vent hole 403 is connected with the inside of the intelligent work vehicle 2.

[0062] A pull plate 405 is fixedly connected to the outer wall of the sliding telescopic sleeve 401 , one end of the pull plate 405 is fixedly connected to a connecting strip 406 , and an elastic fabric 407 is fixedly connected to the outer wall of the connecting strip 406 .

[0063] The outer wall of the elastic cloth 407 is fixedly connected with a fixing block 408 , and the outer wall of the fixing block 408 is fixedly connected with the outer wall of the connection box 301 . The elastic cloth 407 is elastic.

[0064] A pull rope 409 is fixedly connected to the bottom of the connecting strip 406, and the outer wall of the pull rope 409 contacts a hinge block B414. The outer wall of the hinge block B414 is fixedly connected to the outer wall of the connecting box 301. One end of the pull rope 409 is fixedly connected to the outer wall of the fixing plate 316. The outer wall of the hinge block B414 is hinged with a hinge rod 413.

[0065] One end of the hinge rod 413 is hinged with a hinge block A412 , the outer wall of the hinge block A412 is fixedly connected with a scraper sleeve 411 , and the inner wall of the scraper sleeve 411 is slidably connected with the outer wall of the connecting plate 309 .

[0066] The connection box 301 is a circular barrel-shaped structure, the connection bar 406 is an arc-shaped bar-shaped structure, and the outer wall of the connection bar 406 does not contact the outer wall of the connection box 301 .

[0067] The ventilation groove A310 is a rectangular groove, the interior of the ventilation groove A310 is connected to the exterior of the connecting plate 309, and the scraper sleeve 411 is a stepped sleeve structure.

[0068] Small holes are formed on the surface of the elastic fabric 407, and the elastic fabric 407 increases elastic expansion through the small holes on the inner wall.

[0069] Embodiment 4: A method for detecting SF6 gas:

[0070] S1: The intelligent working vehicle 2 is started by remote control, enters a space where a large number of GIS equipment are working, and then the intelligent working vehicle 2 is controlled remotely to make it close to the GIS equipment. At this time, a signal is sent to the central processor 302 by remote control. The central processor 302 receives the signal and sends a command to the electric telescopic rod 303

[0071] S2: The electric telescopic rod 303 starts to perform the telescopic work after receiving the command. When the electric telescopic rod 303 retracts first, it will pull the piston plate 304 to slide and rise in the intelligent work vehicle 2, and the air between the piston plate 304 and the bottom of the inner wall of the intelligent work vehicle 2 will be drawn into the one-way valve A312 in the rotating shaft 308 through the ventilation groove A310 at the bottom of the connecting plate 309, and then enter the intelligent work vehicle 2. The rising piston plate 304 will drive the sealing slider 305 in the fixed sleeve 306 to rise synchronously and slide in the fixed sleeve 306, thereby dividing the space in the intelligent work vehicle 2 into four parts, each part corresponds to an air connecting channel connecting a connecting plate 309 and the ventilation groove A310, so that the air around the intelligent work vehicle 2 can be sampled and detected separately.

[0072] Example 5: Please refer to Figure 1-15 On the basis of the fourth embodiment, the present invention provides a technical solution: when performing normal sampling and pumping of air, the electric telescopic rod 303 controls the rise of the piston plate 304 to push the air in the enclosed space at the top of the piston plate 304 to be discharged through the vent 403 opened in the sliding telescopic sleeve 401. When performing high-efficiency, high-load and rapid air sampling work on a larger power distribution room, it is necessary to adjust the telescopic speed of the electric telescopic rod 303 to increase the air extraction speed. At this time, when the piston plate 304 rises to draw external air into the bottom of the piston plate 304, the air pressure in the enclosed space between the top of the piston plate 304 and the intelligent work vehicle 2 is increased because the rising speed of the piston plate 304 is accelerated. At this time, the vent hole 403 with a smaller diameter cannot bear a large amount of air discharge, and the pressure inside the intelligent working vehicle 2 will push out the sliding telescopic sleeve 401, and the pressure at this time is greater than the elastic force of the elastic cloth 407, and the sliding telescopic sleeve 401 is fixedly connected to the connecting strip 406 through the pull plate 405, and the connecting strip 406 is pulled by the elastic force of the elastic cloth 407, so that under normal air pressure, the elastic force of the elastic cloth 407 will not be overcome to push out the sliding telescopic sleeve 401. Only when the rising speed of the piston plate 304 is accelerated and the air pressure is increased, because the exhaust diameter of the vent hole 403 remains unchanged, the elastic force of the elastic cloth 407 is overcome, and the elastic cloth 407 is pulled and deformed by pushing out the hollow sliding telescopic sleeve 401;

[0073] At this time, when the sliding telescopic sleeve 401 is pushed out, the elastic cloth 407 is pulled open by the pull plate 405 and the connecting strip 406. The elastic cloth 407 is stretched to expand its area due to its own elastic force. Therefore, when the air is quickly extracted, the elastic cloth 407 is stretched and expanded by the connecting strip 406 to extend outward to form a large net to shield the upper part of the connecting plate 309 being extracted, so as to avoid that when the air is quickly extracted, the air around the ventilation groove A310, including the air above, will be instantly sucked into the ventilation groove A310 due to the fast extraction speed, and the air at the bottom of the space cannot be completely sampled, thereby This affects the detection of SF6 air. When a large amount of air above is sucked into the ventilation slot A310 by the expansion of the elastic cloth 407 due to the negative pressure, it is blocked by the elastic cloth 407 and needs to bypass and enter the ventilation slot A310 below. At this time, since the coverage of the elastic cloth 407 is increased, the ventilation slot A310 quickly extracts air and draws the bottom air of the position covered by the elastic cloth 407 in a larger range into the intelligent work vehicle 2, thereby reducing the amount of non-SF6 air above to be extracted during rapid extraction, and avoiding the error of low SF6 air detection concentration caused by rapid sampling.

[0074] Under normal extraction speed, the elastic cloth 407 is not opened. The purpose is to allow the connecting plate 309 to draw in a small amount of non-SF6 air from above when sampling the air. This ensures that the ratio of the air extracted from the bottom and upper layers of the space remains close when the air is extracted quickly and slowly at normal speed. In the subsequent SF6 air detection, there will be no data difference problem caused by fast extraction and slow extraction.

[0075] Example 6: Please refer to Figure 1-15 , based on the fifth embodiment, the present invention provides a technical solution: when the rapid air sampling is working, due to the push-out of the sliding telescopic sleeve 401, the fixed plate 316 on one side of the connecting plate 309 is pulled by the pull plate 405 and the connecting strip 406 to bypass the hinge block B414, so that the connecting plate 309 is pulled to drive the rotating shaft 308 to rotate and lift. By lifting the connecting plate 309 at this time, the contact distance with the ground is widened, so as to prevent the dust particles on the ground at the bottom of the ventilation groove A310 from being sucked into the intelligent work vehicle 2 when the piston plate 304 rises rapidly to extract air with high-intensity negative pressure, and to avoid the problem that a large amount of impurities affect the real-time detection accuracy of the SF6 air concentration of the SF6 gas detector 1 when the air is extracted with high intensity close to the ground;

[0076] When the connecting plate 309 is lifted, the scraper sleeve 411 on the outer wall of the connecting plate 309 will rise together with the rotation and lifting of the connecting plate 309, and will be pushed by the hinge rod 413 through the hinge block A412, thereby pushing the scraper sleeve 411 to slide on the outer wall of the connecting plate 309 to the fixed plate 316, thereby resisting the fixed plate 316 on the connecting plate 309, realizing the limit of the rotation range of the connecting plate 309, and at this time, the scraper sleeve 411 slides to the fixed plate 316, and the part previously covered by the scraper sleeve 411 is The two vents A310 are opened separately to reduce the situation in which the dust below is sucked into the intelligent work vehicle 2 due to the small opening of the vent slot A310 when the high-pressure air is extracted. During the normal slow-speed sampling and extraction of the air, the scraper sleeve 411 covers half of the vent slot A310 by the lowering of the connecting plate 309, thereby realizing accurate sampling of the air below in a small range. In this way, the problem of the four connecting plates 309 being unable to realize differentiated detection of the air in different spatial areas due to the large sampling range is avoided.

[0077] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An SF6 gas detection platform, comprising an intelligent work vehicle (2), wherein the top of the intelligent work vehicle (2) is fixedly connected to an SF6 gas detector (1), and the bottom of the SF6 gas detector (1) is fixedly connected to the intelligent work vehicle (2), characterized in that: The bottom of the intelligent working vehicle (2) is provided with an SF6 gas sampling mechanism (3); The SF6 gas sampling mechanism (3) comprises: A connection box (301), the top of the connection box (301) being fixedly connected to the bottom of the intelligent working vehicle (2), the bottom of the intelligent working vehicle (2) being fixedly connected to a central processing unit (302) and an electric telescopic rod (303), the central processing unit (302) being electrically connected to the electric telescopic rod (303), one end of the electric telescopic rod (303) being fixedly connected to a piston plate (304), the outer wall of the piston plate (304) being slidably connected to the inner wall of the connection box (301); A limit ring (307), wherein the limit ring (307) is an arc-shaped plate-shaped structure, the outer wall of the limit ring (307) is fixedly connected to the inner wall of the intelligent working vehicle (2), the bottom of the inner wall of the intelligent working vehicle (2) is fixedly connected to a fixed sleeve (306), the inner wall of the fixed sleeve (306) is slidably connected to a sealing slider (305), the top of the sealing slider (305) is fixedly connected to the bottom of the piston plate (304), the top of the piston plate (304) is fixedly connected to a telescopic sleeve A (314), the inner wall of the telescopic sleeve A (314) is slidably connected to a telescopic sleeve B (315), the top of the telescopic sleeve B (315) is fixedly connected to the bottom of the intelligent working vehicle (2), the inner wall of the telescopic sleeve B (315) is fixedly connected to a gas connecting pipe (6), one end of the gas connecting pipe (6) passes through the intelligent working vehicle (2) and is fixedly connected to the bottom of the SF6 gas detector (1); The outer wall of the intelligent working vehicle (2) is rotatably connected to a rotating shaft (308), and the outer wall of the rotating shaft (308) is fixedly connected to a connecting plate (309); A ventilation groove A (310) is provided at the bottom of the connecting plate (309), a ventilation groove B (311) is provided on the inner wall of the rotating shaft (308), the ventilation groove A (310) is in communication with the ventilation groove B (311), the ventilation groove A (310) is in communication with the interior of the connecting plate (309), the ventilation groove B (311) is in communication with the connecting plate (309), a one-way valve A (312) is fixedly connected to the inner wall of the ventilation groove B (311), and an air inlet end of the one-way valve A (312) is in communication with the interior of the connecting plate (309); A fixed plate (316) is fixedly connected to one side of the connection plate (309); a sampling auxiliary mechanism (4) is arranged outside the connection box (301); the sampling auxiliary mechanism (4) comprises a sliding telescopic sleeve (401); an outer wall of the sliding telescopic sleeve (401) is fixed inside the connection box (301); a vent hole (403) is provided on an inner wall of the sliding telescopic sleeve (401); and an inner wall of the vent hole (403) is communicated with the inside of the intelligent working vehicle (2); The outer wall of the sliding telescopic sleeve (401) is fixedly connected to a pull plate (405), one end of the pull plate (405) is fixedly connected to a connecting strip (406), and the outer wall of the connecting strip (406) is fixedly connected to an elastic fabric (407); The outer wall of the elastic cloth (407) is fixedly connected to a fixing block (408), and the outer wall of the fixing block (408) is fixedly connected to the outer wall of the connection box (301); A pull rope (409) is fixedly connected to the bottom of the connection strip (406); the outer wall of the pull rope (409) contacts a hinge block B (414); the outer wall of the hinge block B (414) is fixedly connected to the outer wall of the connection box (301); one end of the pull rope (409) is fixedly connected to the outer wall of the fixing plate (316); and the outer wall of the hinge block B (414) is hingedly connected to a hinge rod (413); One end of the hinge rod (413) is hingedly connected to a hinge block A (412); the outer wall of the hinge block A (412) is fixedly connected to a scraper sleeve (411); and the inner wall of the scraper sleeve (411) is slidably connected to the outer wall of the connecting plate (309).

2. The SF6 gas detection platform according to claim 1, characterized in that: A one-way valve B (313) is fixedly connected to the inner wall of the piston plate (304); the inner wall of the one-way valve B (313) is in communication with the inner wall of the telescopic sleeve A (314); the inner wall of the telescopic sleeve A (314) is in communication with the inner wall of the telescopic sleeve B (315); the inner wall of the telescopic sleeve B (315) is in communication with the inner wall of the gas connecting pipe (6); and the inner wall of the gas connecting pipe (6) is in communication with the interior of the SF6 gas detector (1).

3. The SF6 gas detection platform according to claim 2, characterized in that: The air inlet end of the one-way valve B (313) is in communication with the bottom of the piston plate (304), and the air outlet end of the one-way valve B (313) is in communication with the top of the piston plate (304).

4. The SF6 gas detection platform according to claim 3, characterized in that: The air outlet end of the one-way valve A (312) is in communication with the interior of the intelligent working vehicle (2).

5. The SF6 gas detection platform according to claim 4, characterized in that: The bottom of the piston plate (304) contacts the top of the limiting ring (307).

6. The SF6 gas detection platform according to claim 5, characterized in that: The connection box (301) is a circular barrel-shaped structure.

7. The SF6 gas detection platform according to claim 6, characterized in that: The connecting strip (406) is an arc-shaped strip structure.

8. The SF6 gas detection platform according to claim 7, characterized in that: The stretch fabric (407) is elastic.

9. The SF6 gas detection platform according to claim 8, characterized in that: The outer wall of the connecting strip (406) does not contact the outer wall of the connecting box (301).

10. The SF6 gas detection platform according to claim 9, characterized in that: The ventilation groove A (310) is a rectangular groove.

11. The SF6 gas detection platform according to claim 10, characterized in that: The interior of the ventilation groove A (310) is communicated with the exterior of the connecting plate (309).

12. The SF6 gas detection platform according to claim 11, characterized in that: The scraping sleeve (411) has a stepped sleeve-like structure.

13. A SF6 gas detection platform according to claim 12, characterized in that: Small holes are provided on the surface of the elastic cloth (407), and the elastic cloth (407) increases elastic expansion through the small holes on the inner wall.

14. A detection method for a SF6 gas detection platform according to claim 13, characterized in that: S1: The intelligent working vehicle (2) is started by remote control, enters a space where a large number of GIS equipment are working, and then the intelligent working vehicle (2) is controlled remotely to move close to the GIS equipment. At this time, a signal is sent to the central processor (302) by remote control, and the central processor (302) receives the signal and sends a command to the electric telescopic rod (303); S2: After receiving the command, the electric telescopic rod (303) starts to perform the telescopic work. When the electric telescopic rod (303) retracts first, it pulls the piston plate (304) to slide upward in the intelligent working vehicle (2), and draws the air between the piston plate (304) and the bottom of the inner wall of the intelligent working vehicle (2) through the ventilation groove A (310) at the bottom of the connecting plate (309) into the one-way valve A (312) in the rotating shaft (308), and then enters the intelligent working vehicle (2). The rising piston plate (304) drives the sealing slider (305) in the fixed sleeve (306) to rise synchronously and slide in the fixed sleeve (306), thereby dividing the space in the intelligent working vehicle (2) into four parts, each of which corresponds to an air connection channel connecting the connecting plate (309) and the ventilation groove A (310), so that the air around the intelligent working vehicle (2) is sampled and tested separately.

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