Combustible gas detector for safety prevention engineering

Abstract

The invention discloses a combustible gas detector for safety prevention engineering, relates to the technical field of combustible gas detection equipment, and aims to solve the problems that although two hands of an existing detector are liberated by hanging the detector on a waist or plugging a pocket, personnel are difficult to observe data in real time, so that the maintenance process is tedious, equipment emergencies cannot be dealt with in time, and the detection efficiency is high. The display screen and the control switch are located on the front face of the detector, and the connector is connected with the detector. The device can be used no matter the device is installed on a wall body with a metal part or without a metal part, and it is ensured that personnel can observe the detector in real time in the detection and maintenance process, so that when the equipment suddenly suffers from combustible gas leakage and other emergencies, the maintenance personnel can make a response at the first time, the early warning effect of the device is improved, and the safety of the equipment is improved. And guarantee is provided for personnel safety and overhaul and maintenance efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of flammable gas detection equipment, and more specifically, to a flammable gas detector for safety prevention engineering. Background Art

[0002] In industrial scenarios involving the production, storage, transportation, and use of flammable gases, flammable gas detectors are the core tools for ensuring safety. Moreover, in dynamic leakage sources such as gas drainage pipelines in coal mines and biogas collection systems in landfills, daily inspections are required to ensure safe use.

[0003] Currently, in industrial production and daily equipment operation and maintenance scenarios, portable flammable gas detectors have become key tools for carrying out daily inspections and maintenance work. When maintenance operations need to be performed on equipment during the inspection process, maintenance personnel need to free their hands to conduct detailed inspections and maintenance work on pipelines and related equipment. However, in this situation, how to properly place the flammable gas detector has become an urgent problem to be solved. Currently, the common practice is to directly hang the flammable gas detector on the waist or casually put it in the pocket.

[0004] The above two methods do, to a certain extent, free the hands of maintenance personnel and facilitate equipment maintenance work. However, in actual use, obvious drawbacks have emerged: Since the detector is not within the line of sight of maintenance personnel, it is difficult for them to quickly view the detection data displayed by the instrument. This leads to the situation that during the maintenance process, maintenance personnel have to frequently stop their work, take out the detector to check, in order to confirm whether there are safety hazards such as flammable gas leakage in the surrounding environment of the equipment, and then continue with the maintenance operation. Repeating this process not only makes the entire maintenance process cumbersome and inefficient, but also greatly increases the working hours and labor costs. More importantly, during the detection process, due to the step of taking out the detector from the pocket, it is difficult for maintenance personnel to react immediately in case of emergencies such as sudden flammable gas leakage in the equipment. Once a danger occurs, due to the lack of timely warning, maintenance personnel may not be able to quickly take effective protective measures or evacuate the scene, thus posing a serious threat to their personal safety. In view of this, we propose a flammable gas detector for safety prevention engineering. Summary of the Invention

[0005] The purpose of the present invention is to provide a flammable gas detector for safety prevention engineering, so as to solve the technical problem that although the current placement methods of hanging the detector on the waist or putting it in the pocket free the hands, it is difficult for personnel to observe the data in the first time, resulting in a cumbersome maintenance process and being unable to respond to sudden equipment conditions in a timely manner, making it difficult to ensure the safety of personnel.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A combustible gas detector for safety prevention engineering, including a detector, a display screen, a detector and a detection probe, further including, A detection mechanism, including a detector, a display screen and a control switch located on the front of the detector, a connector connected to the detector, a detector, a detection probe, elastic air cushions located on both sides of the detector, and a nut located at the rear of the detector. Among them, the detector is arranged above the detector, and the detection probe is connected to the connector; and, an installation mechanism, including four magnetic attraction components, an adjustment component connected to the four magnetic attraction components, a pressing component, a driven component located inside the pressing component, a substrate component located inside the driven component, a sealing component connected to the substrate component, and a piston plate component, where the pressing component is located between the four magnetic attraction components.

[0007] The present invention can be used whether it is installed on a wall with or without metal components, ensuring that personnel can observe the detector in real time during the detection and maintenance process. In this way, when an emergency such as sudden leakage of combustible gas occurs in the equipment, the maintenance personnel can make a reaction in the first time, improving the early warning effect of the device and providing guarantee for personnel safety and maintenance efficiency.

[0008] Preferably, the front of the detector is fixedly connected to the display screen and the control switch respectively, the detector is fixedly connected above the detector, the upper part of the detector is fixedly connected to the connector, the detector is connected to the detection probe through the connector, both sides of the detector are fixedly connected to two elastic air cushions respectively, and the back of the detector is fixedly connected to the nut.

[0009] Preferably, the number of the magnetic attraction components is four, two of the magnetic attraction components located on the same side are lapped with the top and bottom of one of the adjustment components, the number of the adjustment components is two, the inner wall of the pressing component is rotatably connected to the substrate component, the substrate component is fixedly connected to several driven components, the driven components are respectively fixedly connected to the sealing component and the adjustment component, the sealing component is fixedly connected to the substrate component, and the inner wall of the sealing component is adapted to the outer wall of the piston component; The magnetic attraction components, the adjustment components and the pressing component are all fixedly connected to the rear of the detector, the adjustment component is communicated with the elastic air cushion, and the piston component is threadedly connected to the nut.

[0010] Preferably, the magnetic attraction component includes a movable shell, a magnetic block is slidably connected inside the movable shell, and several first elastic telescopic rods are fixedly connected to one side of the magnetic block; The movable shell and several first elastic telescopic rods are both fixedly connected to the rear of the detector, and the lower part of the magnetic block is lapped with the adjustment component.

[0011] Preferably, the adjusting assembly includes a conduit, the other end of the conduit is communicated with a sliding sleeve, extrusion rods are slidably connected above and below the sliding sleeve, two brackets are fixedly connected to the outside of the sliding sleeve, the other ends of the extrusion rods are fixedly connected with push blocks, inclined grooves are formed on the front surfaces of the push blocks, two springs are fixedly connected to the outside of the sliding sleeve, and the other ends of the two springs are respectively fixedly connected with the two extrusion rods; The brackets are fixedly connected to the rear of the detector, and the conduit is communicated with an elastic air cushion.

[0012] Preferably, the extrusion assembly includes a mounting shell, an extrusion cylinder is slidably connected in the mounting shell, a plurality of anti-slip pads are fixedly connected to the rear of the extrusion cylinder, a first sealing pad is fixedly connected between the plurality of anti-slip pads, and a clamping plate is fixedly connected to the lower part of the extrusion cylinder; The mounting shell is fixedly connected to the rear of the detector, the substrate assembly is rotatably connected in the mounting shell, and the inner wall of the extrusion cylinder is fixedly connected with the driven assembly.

[0013] Preferably, the driven assembly includes a second elastic telescopic rod, one end of the second elastic telescopic rod is fixedly connected with a first toothed plate, the first toothed plate is meshed with a second toothed plate through a gear, and the gear is clamped in a positioning frame; The second elastic telescopic rod and the positioning frame are both fixedly connected with the substrate assembly, the first toothed plate is fixedly connected with the inner wall of the extrusion cylinder, and the second toothed plate is fixedly connected with the sealing assembly.

[0014] Preferably, the sealing assembly includes a first sealing cylinder, a second sealing cylinder is slidably connected in the first sealing cylinder, a second sealing pad is fixedly connected to the rear of the first sealing cylinder, and the second sealing cylinder is connected to the first sealing cylinder through a clamping block and a guide groove; The second sealing cylinder is fixedly connected with the substrate assembly, and the inner wall of the second sealing cylinder is lapped with the piston assembly.

[0015] Preferably, the piston assembly includes a piston plate, a sleeve is clamped on the front surface of the piston plate, an adjusting rod is sleeved in the sleeve, and a threaded groove and a plurality of limiting grooves are formed on the adjusting rod; The outer wall of the piston plate is lapped with the inner wall of the second sealing cylinder, the adjusting rod is threadedly connected in a nut, and the substrate assembly is clamped in the limiting grooves outside the adjusting rod.

[0016] Preferably, the substrate assembly includes a connecting plate, a rotating groove is formed on the front surface of the connecting plate, and a plurality of limiting blocks are fixedly connected in the rotating groove; The connecting plate is rotatably connected in the mounting shell, the connecting plate is respectively fixedly connected with the second elastic telescopic rod, the positioning frame and the second sealing cylinder, and the connecting plate is clamped outside the adjusting rod through the limiting blocks.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By designing a magnetic attraction component, a sealing component, and a piston component, when maintaining and repairing a faulty position, if there is a metal wall behind the device, the device can be directly pressed against the wall, causing the pressing component to press against the wall and quickly contract. At this time, the magnetic attraction component will adsorb to the metal parts on the rear wall, thereby realizing the fixation of the device. If there are no other metal parts on the rear wall, the operation method is as follows: First, press the wall through the pressing component, and then rotate the detector. Since the pressing component is under pressure and under the action of the reaction force of the driven component, the friction between the pressing component and the sealing component and the wall increases. When the detector rotates 90 degrees, the substrate component and the piston component will remain in place, while the nut will drive the piston component to slide horizontally in the sealing component as the detector rotates, thereby forming a negative pressure between the sealing component and the wall to complete the adsorption and fixation. In this way, the device can be used whether it is installed on a wall with metal parts or without metal parts, ensuring that personnel can observe the detector in real time during the detection and maintenance process. In this way, when an emergency such as sudden leakage of combustible gas occurs in the equipment, the maintenance personnel can react immediately, improving the early warning effect of the device and providing guarantee for personnel safety and maintenance efficiency.

[0018] 2. The present invention also designs a magnetic attraction component and an adjustment component. When there is metal on the wall that can be adsorbed by the magnetic block, directly press the back of the detector against the metal part on the wall to make the magnetic block initially fit with the metal surface. Then, press the detector to ensure that the magnetic block is closely attached to the metal above the wall. At this time, the magnetic block will firmly adsorb on the metal surface, thereby completing the fixation of the detector. If it is necessary to remove the detector, the operation steps are as follows: Grasp and press the elastic air cushions on both sides of the detector. During the pressing process, the gas in the elastic air cushions quickly flows into the sliding sleeve along the conduit, causing the pressure in the sliding sleeve to increase. Under the action of the pressure, the two pressing rods and the push block start to move, and the push block further presses the magnetic block, prompting the magnetic block to move into the movable shell. At this time, the first elastic telescopic rod contracts accordingly. This operation has two effects: On the one hand, the magnetic block moves away from the metal on the wall surface and disengages from the adsorbable object, facilitating the removal of the detector from the wall; on the other hand, a push block is set as a barrier between the magnetic block and the metal on the wall surface, and even in the adsorbed state, they are not in direct contact. Moreover, only by pressing the elastic air cushions can the device be disassembled, greatly reducing the usage difficulty of the device.

[0019] 3. The present invention also designs a driven component, a piston component and a substrate component. When there is no metal on the wall that can be adsorbed by the magnetic block, the back of the detector needs to be close to the wall. Then, the wall is extruded by the extrusion cylinder. At this time, the extrusion cylinder will move backward, and the gear is driven to rotate by the second toothed plate. As the gear rotates, the first toothed plate engaged with it will move forward, and the first sealing cylinder connected to the first toothed plate will move synchronously. When the extrusion cylinder is compressed to the limit state, the first sealing cylinder will be closely attached to the wall. Subsequently, the detector is rotated by ninety degrees to make it in a vertical state. Since the detector is connected to the nut, and the adjusting rod is threadedly connected to the nut through the thread groove, during the rotation of the detector, the nut will also rotate. When the nut rotates, the adjusting rod will move horizontally into the nut, and at the same time, the piston plate is pulled to slide in the second sealing cylinder. This series of actions will create a negative pressure in the space between the first sealing cylinder and the second sealing cylinder and the wall, thereby firmly adsorbing the detector on the wall. In this way, the device can be flexibly installed according to different usage environments, and moreover, the entire installation process only needs to extrude the detector and rotate it by ninety degrees to complete, greatly reducing the usage difficulty of the device, ensuring that the operator can observe the display data of the detector in real time, and effectively improving the maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the detection mechanism structure of the present invention; Figure 3 is a schematic diagram of the installation mechanism structure of the present invention; Figure 4 is a schematic diagram of the adjustment component structure of the present invention; Figure 5 is a schematic cross-sectional view of the extrusion component of the present invention; Figure 6 is a schematic diagram of the driven component structure of the present invention; Figure 7 of the present invention Figure 6 is an enlarged schematic view of part A in; Figure 8 is a schematic cross-sectional view of the sealing component of the present invention.

[0021] Explanation of the reference numerals in the drawings: 1. Detection mechanism; 2. Installation mechanism; 11. Detector; 12. Display screen; 13. Control switch; 14. Detector; 15. Connector; 16. Detection probe; 17. Elastic air cushion; 18. Nut; 21. Magnetic attraction component; 22. Adjustment component; 23. Extrusion component; 24. Driven component; 25. Sealing component; 26. Piston component; 27. Substrate component; 211. Movable shell; 212. First elastic telescopic rod; 213. Magnetic block; 221. Conduit; 222. Sliding sleeve; 223. Extrusion rod; 224. Bracket; 225. Pusher block; 226. Inclined groove; 227. Spring; 231. Mounting shell; 232. Extrusion cylinder; 233. Anti-slip pad; 234. First sealing gasket; 235. Clamping plate; 241. Second elastic telescopic rod; 242. First toothed plate; 243. Gear; 244. Positioning frame; 245. Second toothed plate; 251. First sealing cylinder; 252. Second sealing gasket; 253. Second sealing cylinder; 261. Piston plate; 262. Sleeve; 263. Adjusting rod; 264. Threaded groove; 265. Limiting groove; 271. Connecting plate; 272. Rotating groove; 273. Limiting block. Detailed implementation mode

[0022] As Figures 1 to 8 shown, a combustible gas detector for safety prevention engineering according to the present invention includes a detector 11, a display screen 12, a detector 14 and a detection probe 16, and further includes, The detection mechanism 1 includes a detector 11, a display screen 12 and a control switch 13 located on the front of the detector 11, a connector 15 connected to the detector 11, a detector 14, a detection probe 16, elastic air cushions 17 located on both sides of the detector 11, and a nut 18 located behind the detector 11. Among them, the detector 14 is arranged above the detector 11, and the detection probe 16 is connected to the connector 15; and, the installation mechanism 2 includes four magnetic attraction components 21, an adjustment component 22 connected to the four magnetic attraction components 21, a squeezing component 23, a driven component 24 located inside the squeezing component 23, a substrate component 27 located inside the driven component 24, a sealing component 25 and a piston plate 261 component connected to the substrate component 27. Among them, the squeezing component 23 is located between the four magnetic attraction components 21. By designing the magnetic attraction components 21, the sealing component 25 and the piston component 26, when maintaining and repairing the faulty position, if there is a metal wall behind the device, the device can be directly squeezed against the wall, so that the squeezing component 23 squeezes the wall and quickly contracts. At this time, the magnetic attraction components 21 will adsorb to the metal parts on the rear wall, thereby realizing the fixation of the device. If there are no other metal parts on the rear wall, the operation method is as follows: first squeeze the wall through the squeezing component 23, and then rotate the detector 11. Since the squeezing component 23 is under pressure and under the reaction force of the driven component 24, the friction between the squeezing component 23 and the sealing component 25 and the wall increases. When the detector 11 rotates 90 degrees, the substrate component 27 and the piston component 26 will remain in place, while the nut 18 will drive the piston component 26 to slide horizontally in the sealing component 25 as the detector 11 rotates, thereby forming a negative pressure between the sealing component 25 and the wall to complete the adsorption and fixation. In this way, the device can be used whether it is installed on a wall with metal parts or without metal parts, ensuring that personnel can observe the detector 11 in real time during the detection and maintenance process. In this way, when an emergency such as sudden leakage of combustible gas occurs in the equipment, the maintenance personnel can react immediately, improving the early warning effect of the device and providing guarantee for personnel safety and maintenance efficiency.

[0023] In an embodiment of the present invention, the front of the detector 11 is fixedly connected to the display screen 12 and the control switch 13 respectively. The detector 14 is fixedly connected above the detector 11. The upper part of the detector 11 is fixedly connected to the connector 15. The detector 11 is connected to the detection probe 16 through the connector 15. The two sides of the detector 11 are fixedly connected to two elastic air cushions 17 respectively. The back of the detector 11 is fixedly connected to the nut 18. The number of the magnetic attraction components 21 is four. Two magnetic attraction components 21 on the same side are lapped with the top and bottom of one of the adjustment components 22. The number of the adjustment components 22 is two. The inner wall of the extrusion component 23 is rotatably connected to the substrate component 27. The substrate component 27 is fixedly connected to a plurality of driven components 24. The driven components 24 are fixedly connected to the sealing component 25 and the adjustment component 22 respectively. The sealing component 25 is fixedly connected to the substrate component 27. The inner wall of the sealing component 25 is adapted to the outer wall of the piston component 26. The magnetic attraction components 21, the adjustment components 22 and the extrusion component 23 are all fixedly connected to the back of the detector 11. The adjustment component 22 is communicated with the elastic air cushion 17. The piston component 26 is threadedly connected to the nut 18. By designing the magnetic attraction components 21 and the adjustment components 22, when there is metal on the wall that can be adsorbed by the magnetic block 213, directly bring the back of the detector 11 close to the metal part on the wall so that the magnetic block 213 is initially attached to the metal surface. Then, squeeze the detector 11 to ensure that the magnetic block 213 is closely attached to the metal above the wall. At this time, the magnetic block 213 will firmly adsorb on the metal surface, thus completing the fixation of the detector 11. If it is necessary to remove the detector 11, the operation steps are as follows: Grasp and squeeze the elastic air cushions 17 on both sides of the detector 11. During the squeezing process, the gas in the elastic air cushions 17 quickly flows into the sliding sleeve 222 along the conduit 221, resulting in an increase in pressure in the sliding sleeve 222. Under the action of the pressure, the two extrusion rods 223 and the push block 225 start to move. The push block 225 further squeezes the magnetic block 213, prompting the magnetic block 213 to move into the movable shell 211. At this time, the first elastic telescopic rod 212 contracts accordingly. This operation has two effects: on the one hand, the magnetic block 213 moves away from the metal on the wall surface and disengages from the adsorbable object, facilitating the removal of the detector 11 from the wall; on the other hand, a push block 225 is arranged between the magnetic block 213 and the metal on the wall surface as a blocking object, so that even in the adsorbed state, the two are not in direct contact. Moreover, only by squeezing the elastic air cushions 17 can the device be disassembled, greatly reducing the usage difficulty of the device.

[0024] In an embodiment of the present invention, the magnetic attraction assembly 21 includes a movable housing 211. A magnetic block 213 is slidably connected inside the movable housing 211. One side of the magnetic block 213 is fixedly connected with a plurality of first elastic telescopic rods 212. The movable housing 211 and the plurality of first elastic telescopic rods 212 are both fixedly connected to the rear of the detector 11. The lower part of the magnetic block 213 is lapped with the adjusting assembly 22. The adjusting assembly 22 includes a conduit 221. The other end of the conduit 221 is communicated with a sliding sleeve 222. The upper and lower parts of the sliding sleeve 222 are both slidably connected with a pressing rod 223. Two brackets 224 are fixedly connected outside the sliding sleeve 222. The other end of the pressing rod 223 is fixedly connected with a pushing block 225. An inclined groove 226 is formed in the front surface of the pushing block 225. Two springs 227 are fixedly connected outside the sliding sleeve 222, and the other ends of the two springs 227 are respectively fixedly connected with the two pressing rods 223. The bracket 224 is fixedly connected to the rear of the detector 11. The conduit 221 is communicated with the elastic air cushion 17. After use, just rotate the detector 11 ninety degrees in the reverse direction to reset the piston plate 261. At this time, the detector 11 can be removed. Subsequently, the device can be directly installed on the waist belt or placed outside the pocket on the chest through the clamping plate 235, reducing the use difficulty of the device and improving the portability of the device.

[0025] As another embodiment of the present invention, the extrusion assembly 23 includes a mounting shell 231. A pressing cylinder 232 is slidably connected inside the mounting shell 231. A number of anti-slip pads 233 are fixedly connected to the rear of the pressing cylinder 232. A first sealing pad 234 is fixedly connected between the anti-slip pads 233. A clamping plate 235 is fixedly connected to the lower part of the pressing cylinder 232. The mounting shell 231 is fixedly connected to the rear of the detector 11. The substrate assembly 27 is rotatably connected inside the mounting shell 231. The inner wall of the pressing cylinder 232 is fixedly connected to the driven assembly 24. The driven assembly 24 includes a second elastic telescopic rod 241. One end of the second elastic telescopic rod 241 is fixedly connected to a first toothed plate 242. The first toothed plate 242 is meshed with a second toothed plate 245 through a gear 243. The gear 243 is clamped inside a positioning frame 244. Both the second elastic telescopic rod 241 and the positioning frame 244 are fixedly connected to the substrate assembly 27. The first toothed plate 242 is fixedly connected to the inner wall of the pressing cylinder 232. The second toothed plate 245 is fixedly connected to the sealing assembly 25. By designing the driven assembly 24, the piston assembly 26 and the substrate assembly 27, when there is no metal on the wall that can be adsorbed by the magnet 213, the back of the detector 11 needs to be close to the wall. Then, the wall is extruded through the pressing cylinder 232. At this time, the pressing cylinder 232 will move backward, and the gear 243 will be driven to rotate by the second toothed plate 245. As the gear 243 rotates, the first toothed plate 242 engaged with it will move forward, and the first sealing cylinder 251 connected to the first toothed plate 242 will also move synchronously. When the pressing cylinder 232 is pressed to the limit state, the first sealing cylinder 251 will be in close contact with the wall. Subsequently, the detector 11 is rotated by ninety degrees to make it in a vertical state. Since the detector 11 is connected to the nut 18, and the adjusting rod 263 is threadedly connected to the nut 18 through the thread groove 264, during the rotation of the detector 11, the nut 18 will also rotate. When the nut 18 rotates, the adjusting rod 263 will move horizontally into the nut 18, and at the same time pull the piston plate 261 to slide inside the second sealing cylinder 253. This series of actions will create a negative pressure in the space between the first sealing cylinder 251 and the second sealing cylinder 253 and the wall, thereby firmly adsorbing the detector 11 on the wall. In this way, the device can be flexibly installed according to different usage environments. Moreover, the entire installation process only needs to extrude the detector 11 and rotate it by ninety degrees to complete, greatly reducing the usage difficulty of the device, ensuring that the operator can observe the display data of the detector 11 in real time, and effectively improving the maintenance efficiency.

[0026] As another embodiment of the present invention, the sealing assembly 25 includes a first sealing cylinder 251. A second sealing cylinder 253 is slidably connected inside the first sealing cylinder 251. A second sealing gasket 252 is fixedly connected to the rear of the first sealing cylinder 251. The second sealing cylinder 253 is connected to the first sealing cylinder 251 through a clamping block and a guiding groove. Since the second sealing cylinder 253 is connected to the first sealing cylinder 251 through the clamping block, the first sealing cylinder 251 can ensure the stability of the second sealing cylinder 253 and prevent the second sealing cylinder 253 from rotating. The second sealing cylinder 253 is fixedly connected to the substrate assembly 27. The inner wall of the second sealing cylinder 253 abuts against the piston assembly 26. The piston assembly 26 includes a piston plate 261. A sleeve 262 is snap-connected to the front surface of the piston plate 261. An adjusting rod 263 is sleeved inside the sleeve 262. Thread grooves 264 and a plurality of limiting grooves 265 are formed on the outer surface of the adjusting rod 263. The outer wall of the piston plate 261 abuts against the inner wall of the second sealing cylinder 253. The adjusting rod 263 is threadedly connected to the nut 18. The substrate assembly 27 is snap-connected to the limiting grooves 265 outside the adjusting rod 263. The substrate assembly 27 includes a connecting plate 271. A rotating groove 272 is formed on the front surface of the connecting plate 271. A plurality of limiting blocks 273 are fixedly connected inside the rotating groove 272. The connecting plate 271 is rotatably connected inside the mounting shell 231. The connecting plate 271 is fixedly connected to the second elastic telescopic rod 241, the positioning frame 244, and the second sealing cylinder 253 respectively. The connecting plate 271 is snap-connected to the outside of the adjusting rod 263 through the limiting blocks 273. A first sealing gasket 234 and an anti-slip gasket 233 are arranged on the outer ring of the extrusion cylinder 232, and a second sealing gasket 252 is arranged on the outer ring of the first sealing cylinder 251. When the extrusion cylinder 232 is extruded to the limit position, under the combined action of the first sealing gasket 234 and the second sealing gasket 252, both the extrusion cylinder 232 and the first sealing cylinder 251 can achieve good sealing with the wall. In this way, when the piston plate 261 moves, external air cannot enter the first sealing cylinder 251, effectively improving the sealing performance of the device. Moreover, this double-contact design can prevent the connecting plate 271 from rotating when the detector 11 rotates, ensuring the stability of the device during use.

[0027] Working principle: This embodiment provides a combustible gas detector for safety prevention engineering. When in use, carry the detector 11 and insert the detection probe 16 into the connector 15 during detection to check different directions by adjusting the angle of the detection probe 16. When carrying out maintenance and repair work on the fault location, if there is a metal wall behind the device, the device can be directly pressed against the wall. At this time, the extrusion assembly 23 will press against the wall and quickly contract. At the same time, the magnetic attraction assembly 21 will adsorb to the metal parts on the rear wall, thus realizing the fixation of the device. If there are no other metal parts on the rear wall, the operation steps are as follows: First, use the extrusion assembly 23 to press against the wall, and then rotate the detector 11. Since the extrusion assembly 23 is under pressure and under the combined action of the reaction force of the driven assembly 24, the friction between the extrusion assembly 23 and the sealing assembly 25 and the wall increases. When the detector 11 rotates 90 degrees, the substrate assembly 27 and the piston assembly 26 will remain in place, and the rotation of the detector 11 will drive the nut 18 to rotate, thereby causing the piston assembly 26 to slide horizontally within the sealing assembly 25, prompting a negative pressure to form between the sealing assembly 25 and the wall, and finally completing the adsorption and fixation; When there is metal on the wall that the magnetic block 213 can adsorb, directly press the back of the detector 11 against the metal part on the wall, so that the magnetic block 213 is in preliminary contact with the metal surface. Then, squeeze the detector 11 to ensure that the magnetic block 213 is in close contact with the metal above the wall. At this time, the magnetic block 213 will firmly adsorb on the metal surface, completing the fixation of the detector 11. If it is necessary to remove the detector 11, the operation is as follows: Grasp and squeeze the elastic air cushions 17 on both sides of the detector 11. The gas in the elastic air cushions 17 will quickly enter the sliding sleeve 222 along the conduit 221, resulting in an increase in pressure within the sliding sleeve 222. Under the action of the pressure, the two extrusion rods 223 and the push block 225 start to move. The push block 225 further squeezes the magnetic block 213, prompting it to move into the movable shell 211. At the same time, the first elastic telescopic rod 212 contracts; When there is no metal on the wall that the magnetic block 213 can adsorb, the back of the detector 11 needs to be close to the wall. Then, use the extrusion cylinder 232 to press against the wall. At this time, the extrusion cylinder 232 will move backward and drive the gear 243 to rotate through the second toothed plate 245. As the gear 243 rotates, the first toothed plate 242 engaged with it will move forward, and the first sealing cylinder 251 connected to the first toothed plate 242 will move synchronously. When the extrusion cylinder 232 is pressed to the limit state, the first sealing cylinder 251 will be in close contact with the wall. Subsequently, rotate the detector 11 90 degrees to make it in a vertical state. Since the detector 11 is connected to the nut 18 and the adjusting rod 263 is threadedly connected to the nut 18 through the thread groove 264, during the rotation of the detector 11, the nut 18 will also rotate. When the nut 18 rotates, the adjusting rod 263 will move horizontally into the nut 18, and at the same time pull the piston plate 261 to slide within the second sealing cylinder 253. This series of actions will form a negative pressure in the space between the first sealing cylinder 251 and the second sealing cylinder 253 and the wall, thereby firmly adsorbing the detector 11 on the wall; After use, just rotate the detector 11 ninety degrees in the reverse direction to reset the piston plate 261. At this time, the detector 11 can be removed, and then the device can be directly installed on the waist belt or placed outside the pocket on the chest through the clamping plate 235.

[0028] The embodiments disclosed in the present invention are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present invention, they are within the protection scope of the present invention.

Claims

1. A combustible gas detector for safety prevention engineering, comprising a detector (11), a display screen (12), a detector (14) and a detection probe (16), characterized in that, It further includes a detection mechanism (1), which includes a detector (11), a display screen (12) and a control switch (13) located in front of the detector (11), a connector (15) connected to the detector (11), a detector (14), a detection probe (16), elastic air cushions (17) located on both sides of the detector (11), and a nut (18) located behind the detector (11). Among them, the detector (14) is arranged above the detector (11), and the detection probe (16) is connected to the connector (15); and a mounting mechanism (2), which includes four magnetic attraction components (21), an adjustment component (22) connected to the four magnetic attraction components (21), a squeezing component (23), a driven component (24) located inside the squeezing component (23), a substrate component (27) located inside the driven component (24), a sealing component (25) and a piston plate (261) component connected to the substrate component (27). Among them, the squeezing component (23) is located between the four magnetic attraction components (21).

2. The combustible gas detector for safety prevention engineering according to claim 1, characterized in that, The front of the detector (11) is fixedly connected to the display screen (12) and the control switch (13) respectively. The detector (14) is fixedly connected above the detector (11). The upper part of the detector (11) is fixedly connected to the connector (15). The detector (11) is connected to the detection probe (16) through the connector (15). The two sides of the detector (11) are fixedly connected to the two elastic air cushions (17) respectively. The back of the detector (11) is fixedly connected to the nut (18).

3. The combustible gas detector for safety prevention engineering according to claim 2, characterized in that, The number of the magnetic attraction components (21) is four. The two magnetic attraction components (21) on the same side are lapped with the top and bottom of one of the adjustment components (22). The number of the adjustment components (22) is two. The inner wall of the squeezing component (23) is rotatably connected to the substrate component (27). The substrate component (27) is fixedly connected to several driven components (24). The driven components (24) are fixedly connected to the sealing component (25) and the adjustment component (22) respectively. The sealing component (25) is fixedly connected to the substrate component (27). The inner wall of the sealing component (25) is adapted to the outer wall of the piston component (26); The magnetic attraction components (21), the adjustment component (22) and the squeezing component (23) are all fixedly connected to the back of the detector (11). The adjustment component (22) is communicated with the elastic air cushion (17). The piston component (26) is threadedly connected to the nut (18).

4. The combustible gas detector for safety prevention engineering according to claim 3, characterized in that, The magnetic attraction component (21) includes a movable shell (211). A magnetic block (213) is slidably connected inside the movable shell (211). One side of the magnetic block (213) is fixedly connected to several first elastic telescopic rods (212); The movable shell (211) and several first elastic telescopic rods (212) are all fixedly connected to the back of the detector (11). The lower part of the magnetic block (213) is lapped with the adjustment component (22).

5. The combustible gas detector for safety prevention engineering according to claim 4, characterized in that, The adjusting component (22) includes a conduit (221), the other end of the conduit (221) is communicated with a sliding sleeve (222), pressing rods (223) are slidably connected above and below the sliding sleeve (222), two brackets (224) are fixedly connected to the outside of the sliding sleeve (222), the other end of the pressing rod (223) is fixedly connected with a pushing block (225), an inclined groove (226) is formed in the front of the pushing block (225), two springs (227) are fixedly connected to the outside of the sliding sleeve (222), and the other ends of the two springs (227) are respectively fixedly connected with the two pressing rods (223); The bracket (224) is fixedly connected to the rear of the detector (11), and the conduit (221) is communicated with the elastic air cushion (17).

6. The combustible gas detector for safety prevention engineering according to claim 5, wherein, The pressing component (23) includes a mounting shell (231), a pressing cylinder (232) is slidably connected in the mounting shell (231), a plurality of anti-slip pads (233) are fixedly connected to the rear of the pressing cylinder (232), a first sealing pad (234) is fixedly connected between the plurality of anti-slip pads (233), and a clamping plate (235) is fixedly connected to the lower part of the pressing cylinder (232); The mounting shell (231) is fixedly connected to the rear of the detector (11), the substrate component (27) is rotatably connected in the mounting shell (231), and the inner wall of the pressing cylinder (232) is fixedly connected with the driven component (24).

7. The combustible gas detector for safety prevention engineering according to claim 6, characterized in that, The driven component (24) includes a second elastic telescopic rod (241), one end of the second elastic telescopic rod (241) is fixedly connected with a first toothed plate (242), the first toothed plate (242) is engaged with a second toothed plate (245) through a gear (243), and the gear (243) is clamped in a positioning frame (244); The second elastic telescopic rod (241) and the positioning frame (244) are both fixedly connected with the substrate component (27), the first toothed plate (242) is fixedly connected with the inner wall of the pressing cylinder (232), and the second toothed plate (245) is fixedly connected with the sealing component (25).

8. The combustible gas detector for safety prevention engineering according to claim 7, characterized in that, The sealing component (25) includes a first sealing cylinder (251), a second sealing cylinder (253) is slidably connected in the first sealing cylinder (251), a second sealing pad (252) is fixedly connected to the rear of the first sealing cylinder (251), and the second sealing cylinder (253) is connected to the first sealing cylinder (251) through a clamping block and a guiding groove; The second sealing cylinder (253) is fixedly connected with the substrate component (27), and the inner wall of the second sealing cylinder (253) is lapped with the piston component (26).

9. The combustible gas detector for safety prevention engineering according to claim 8, characterized in that, The piston component (26) includes a piston plate (261), a sleeve (262) is clamped on the front of the piston plate (261), an adjusting rod (263) is sleeved in the sleeve (262), and a threaded groove (264) and a plurality of limiting grooves (265) are formed in the adjusting rod (263); The outer wall of the piston plate (261) abuts against the inner wall of the second sealing cylinder (253). The adjusting rod (263) is threadedly connected to the nut (18), and the substrate assembly (27) is snap-fitted into the limiting groove (265) outside the adjusting rod (263).

10. The combustible gas detector for safety prevention engineering according to claim 9, characterized in that, The substrate assembly (27) includes a connecting plate (271). A rotating groove (272) is formed on the front surface of the connecting plate (271), and a number of limiting blocks (273) are fixedly connected in the rotating groove (272). The connecting plate (271) is rotatably connected in the mounting shell (231). The connecting plate (271) is fixedly connected to the second elastic telescopic rod (241), the positioning frame (244), and the second sealing cylinder (253) respectively. The connecting plate (271) is snap-fitted onto the adjusting rod (263) through the limiting blocks (273).

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