Intelligent combustible gas detector

Abstract

The invention discloses an intelligent combustible gas detector, which effectively achieves the purpose of detecting gas and giving an alarm on time, and comprises a fixed box, the front side of the fixed box is rotatably connected with a box cover, a sealing mechanism is arranged between the fixed box and the box cover, one side of the box cover is provided with a pressurizing mechanism, and the front side of a placing plate is provided with a control system. A gas inlet pipe and an exhaust pipe are arranged at the bottom of the fixed box, the upper sides of the gas inlet pipe and the exhaust pipe are communicated with a first connecting pipe and a second connecting pipe, the upper sides of the first connecting pipe and the second connecting pipe are jointly connected with a gas detector, and a liquid level detection rod is arranged in the fixed box. The overall sealing effect of the fixing box can be effectively improved, the service life of the device is prolonged, a certain micro-positive pressure can be maintained in the fixing box, the fixing box can be conveniently fixed, the overall shockproof performance of the device can be improved, and gas can be sucked and detected.

Description

Technical Field

[0001] The invention belongs to the technical field of gas detection and relates to an intelligent combustible gas detector. Background Art

[0002] The rapid expansion of combustible gas applications has brought significant convenience to people's lives and production. However, due to its flammable and explosive nature, the incidence of explosion accidents has also increased, posing a significant threat to people's lives and property. To prevent these hazards, detecting combustible gas leaks is essential. The portability and practicality of the corresponding detection instruments play a crucial role in the effectiveness of detection work.

[0003] In the existing technology, the combustible gas detector samples the gas to be tested through a gas sampling circuit. However, since the sampling components require a high waterproof level, there is a risk of the detector being submerged in water for the detector installed in the pipeline. Once the existing detector is submerged, it cannot be used again, thereby reducing the service life of the detector. Therefore, a combustible gas intelligent detector with strong waterproof ability is needed to solve the above problem. Summary of the Invention

[0004] In view of the above problems, the present invention proposes an intelligent combustible gas detector, which effectively solves the problems in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A combustible gas intelligent detector comprises a fixed box, the front side of the fixed box is rotatably connected to a box cover, a sealing mechanism is provided between the fixed box and the box cover, the fixed box, the box cover and the sealing mechanism cooperate with each other to form a sealed structure in the fixed box, the box cover is provided with a pressurizing mechanism for pressurizing the interior of the fixed box on the side close to the fixed box, the rear side of the fixed box is provided with a plurality of fixing plates for fixing the fixed box, the interior of the fixed box is detachably connected to a placement plate for fixing electrical components, a plurality of shock-absorbing mechanisms are provided between the placement plate and the fixed box, the front side of the placement plate is connected to a control system, the bottom of the fixed box is provided with an air intake pipe and an exhaust pipe, the upper sides of the air intake pipe and the exhaust pipe are respectively connected to a first connecting pipe and a second connecting pipe, the upper sides of the first connecting pipe and the second connecting pipe are commonly connected to a gas detector, and the interior of the fixed box is provided with a liquid level detection rod.

[0007] Preferably, the sealing mechanism includes a sealing ring and a sealing gasket, the sealing ring is fixedly connected to the front end surface of the fixed box, a sealing groove is provided on the side of the box cover close to the fixed box, the sealing gasket is arranged inside the sealing groove, the sealing ring and the sealing gasket are both made of rubber, and an inflatable pressurized airbag is provided inside the sealing groove.

[0008] Preferably, the pressurizing mechanism includes a pressurizing gas cylinder and a pressurizing head, the front and rear ends of the pressurizing head are respectively connected to the pressurized airbag and the interior of the fixed box, the box cover is fixedly connected to the first clip and the second clip on the side close to the fixed box, the lower side of the second clip is fixedly connected to the support plate, the upper side of the pressurized gas cylinder is provided with a pressure reducing valve and a first electric valve, the first electric valve is electrically connected to the liquid level detection rod, the air outlet end of the pressure reducing valve is connected to a vent pipe, and the vent pipe is connected to the pressure head on the side away from the pressure reducing valve.

[0009] Preferably, the pressurizing head includes a first sleeve and a second sleeve that are connected to each other, the front side of the first sleeve is connected to the interior of the pressurized airbag, and the rear side of the second sleeve is connected to the interior of the fixed box, and an annular protrusion is provided on the side of the first sleeve close to the second sleeve, and the interior of the second sleeve is fixedly connected to a support frame, and the interior of the support frame is coaxially slidably connected to a sliding rod, and the side of the sliding rod close to the annular protrusion is fixedly connected to a ball head, and the front side of the ball head abuts the annular protrusion, and the side of the sliding rod away from the ball head is fixedly connected to a limiting plate, and a return spring is provided on the outer side of the sliding rod, and the front and rear ends of the return spring abut against the ball head and the support frame respectively.

[0010] Preferably, a fixing curved groove is provided in the middle of each fixing plate, a fixing groove is provided on the front side of each fixing curved groove, and a rubber ring is provided inside the fixing groove.

[0011] Preferably, the shock absorbing mechanism includes a fixed block fixedly connected to the fixed box and a movable block fixedly connected to the placement plate, a shock absorbing groove is provided on the front side of the fixed block, a shock absorbing block adapted to the shock absorbing groove is fixedly connected to the rear side of the movable block, the upper side of the placement plate is rotatably connected to a limiting soft block, the bottom of the rear side of the limiting soft block is fixedly connected to an extension block, and the front side of the limiting soft block is fixedly connected to an operating block.

[0012] Preferably, the middle parts of the air inlet pipe and the air outlet pipe are fixedly connected to the limiting blocks, the upper parts of the air inlet pipe and the air outlet pipe are threadedly connected with the first fixing bolt and the second fixing bolt, the bottoms of the first connecting pipe and the second connecting pipe are fixedly connected with the corresponding second fixing bolts, and the lower parts of the first connecting pipe and the second connecting pipe are provided with second electric valves, and each of the second electric valves is electrically connected to the liquid level detection rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention has a gas detector, the air inlet end and the air outlet end of the gas detector are connected to the air inlet pipe and the air outlet pipe respectively through a first connecting pipe and a second connecting pipe, so that the gas detector can detect the external gas in real time. The gas detector is electrically connected to the control system, and can send the gas detection results to the control system, and send the detection signal to the host computer at regular intervals through the control system, and send an abnormal signal in time to alarm when the signal is abnormal.

[0015] 2. The present invention has a liquid level detection rod, which can detect the liquid level at the installation position of the device. When the device is at risk of being submerged by liquid, the fixed box and the box cover can be sealed to increase the sealing tightness between the two, thereby protecting the device.

[0016] 3. The present invention has a shock-absorbing mechanism, which can provide shock-proof protection for the components inside the fixed box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the closed structure of the present invention.

[0019] Figure 3 It is a structural schematic diagram of the support plate in the present invention.

[0020] Figure 4 It is a schematic diagram of the explosion structure of the first sleeve and the second sleeve in the present invention.

[0021] Figure 5 It is a schematic diagram of the internal structure of the fixed box in the present invention.

[0022] Figure 6 It is a structural schematic diagram of the shock absorbing mechanism in the present invention.

[0023] Figure 7 Schematic diagram of the structure of the second fixing bolt in the present invention.

[0024] Figure 8 For the present invention Figure 1 A partial enlarged schematic diagram of area A in the middle.

[0025] Figure 9 For the present invention Figure 5 A partial enlarged schematic diagram of area B in the middle.

[0026] In the figure: 1. fixed box; 2. box cover; 3. sealing mechanism; 4. pressurizing mechanism; 5. fixing plate; 6. placing plate; 7. shock absorbing mechanism; 8. control system; 9. air inlet pipe; 10. exhaust pipe; 11. first connecting pipe; 12. second connecting pipe; 13. gas detector; 14. liquid level detection rod; 15. sealing ring; 16. sealing gasket; 17. sealing groove; 18. pressurized air bag; 19. pressurized gas cylinder; 20. pressurizing head; 21. first buckle; 22. second buckle; 23. support plate; 24. pressure reducing valve; 25. First electric valve; 26. vent pipe; 27. first sleeve; 28. second sleeve; 29. ​​annular protrusion; 30. support frame; 31. sliding rod; 32. ball head; 33. limit plate; 34. return spring; 35. fixed bend groove; 36. fixed groove; 37. rubber ring; 38. fixed block; 39. moving block; 40. shock-absorbing groove; 41. shock-absorbing block; 42. limit soft block; 43. extension block; 44. operating block; 45. limit block; 46. first fixing bolt; 47. second fixing bolt; 48. second electric valve. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0028] The following is combined with Figure 1 one Figure 9 The specific embodiments of the present invention are described in further detail.

[0029] Depend on Figures 1-9As shown, the present invention includes a fixed box 1. In order to achieve the purpose of timely gas detection and alarm, the front side of the fixed box 1 is rotatably connected to a box cover 2. A sealing mechanism 3 is provided between the fixed box 1 and the box cover 2. The fixed box 1, the box cover 2 and the sealing mechanism 3 cooperate with each other to form a sealed structure inside the fixed box 1. A pressurizing mechanism 4 for pressurizing the interior of the fixed box 1 is provided on the side of the box cover 2 close to the fixed box 1. A plurality of fixing plates 5 for fixing the fixed box 1 are provided on the rear side of the fixed box 1. A placement plate 6 for fixing electrical components is detachably connected to the interior of the fixed box 1. A plurality of shock-absorbing mechanisms 7 are provided between the placement plate 6 and the fixed box 1. The front side of the placement plate 6 is connected to a control system 8, and the bottom of the fixed box 1 is provided with an air intake pipe 9 and an exhaust pipe 10. The upper sides of the air intake pipe 9 and the exhaust pipe 10 are respectively connected to a first connecting pipe 11 and a second connecting pipe 12. The upper sides of the first connecting pipe 11 and the second connecting pipe 12 are commonly connected to a gas detector 13. The gas detector 13 is a prior art, such as a portable coal-safe four-in-one gas detector with a model number JD4, which can detect toxic gases and flammable and explosive gases. No more description is given here. A liquid level detection rod 14 is provided inside the fixed box 1. The liquid level detection rod 14 is a prior art, such as a model number Liquicap The continuous liquid level measuring instrument of FMI51 is not described in detail here. The box cover 2 is rotatably connected to the right side of the front side of the fixed box 1, and the left side of the box cover 2 is connected to the fixed box 1 through a buckle; the control system 8 is a prior art, such as a gas alarm controller of model FIX2100. The gas alarm controller is connected to a gas detector to continuously monitor toxic and harmful gases in the environment, and can display the concentration of the measured gas according to the received input signal. It can also communicate with the host computer through RS485 digital signals. It is not described in detail here;

[0030] When in use, the fixed box 1 can be installed through the fixing plate 5, the fixed box 1 is installed in a suitable position, and the box cover 2 is matched with the fixed box 1 through the buckle, so that the gas detection can be carried out normally. At this time, under the action of the sealing mechanism 3, the fixed box 1 and the box cover 2 can be sealed. In the process of gas detection, since the air inlet and air outlet ends of the gas detector 13 are respectively connected to the air inlet pipe 9 and the air outlet pipe through the first connecting pipe 11 and the second connecting pipe 12, the gas detector 13 can detect the external gas in real time. The gas detector 13 is electrically connected to the control system 8, and can send the gas detection result to the control system 8, and send the detection signal to the host computer through the control system 8 at regular intervals, and when the signal When the signal is abnormal, an abnormal signal is sent in time to alarm. In addition, the liquid level information of the installation position of the fixed box 1 can be detected by the liquid level detection rod 14. When the liquid level is detected to be too high (that is, when the fixed box 1 is at risk of being submerged by liquid), the liquid level detection rod 14 will send a signal to the pressurizing mechanism 4. The pressurizing mechanism 4 can both pressurize the interior of the fixed box 1 with gas and put the interior of the fixed box 1 in a state of slightly positive pressure, and can further increase the overall protection capability of the fixed box 1 against liquid wet environments. In addition, when installing components, the shock-absorbing mechanism 7 can be used to perform shockproof treatment between the placement plate 6 and the fixed box 1, thereby increasing the number of electronic components (gas detector 13, control system 8, etc.) installed on the placement plate 6.

[0031] Furthermore, in order to enhance the overall sealing effect of the fixed box 1, the sealing mechanism 3 includes a sealing ring 15 and a sealing gasket 16. The sealing ring 15 is fixedly connected to the front end surface of the fixed box 1. A sealing groove 17 is formed on the side of the box cover 2 close to the fixed box 1. The sealing gasket 16 is disposed inside the sealing groove 17. Both the sealing ring 15 and the sealing gasket 16 are made of rubber. An inflatable pressurized airbag 18 is disposed inside the sealing groove 17.

[0032] When in use, under the cooperation of the fixed box 1 and the box cover 2, the fixed box 1 and the box cover 2 can be sealed by mutual compression of the sealing ring 15 and the sealing gasket 16 made of rubber.

[0033] Furthermore, in order to increase the service life of the device, the pressurizing mechanism 4 includes a pressurizing gas cylinder 19 and a pressurizing head 20. The front and rear ends of the pressurizing head 20 are respectively connected to the pressurized airbag 18 and the interior of the fixed box 1. A first clip 21 and a second clip 22 are fixedly connected to the side of the box cover 2 close to the fixed box 1. A support plate 23 is fixedly connected to the lower side of the second clip 22. A pressure reducing valve 24 and a first electric valve 25 are provided on the upper side of the pressurized gas cylinder 19. The first electric valve 25 is electrically connected to the liquid level detection rod 14. The air outlet end of the pressure reducing valve 24 is connected to a vent pipe 26. The vent pipe 26 is connected to the pressure head 20 on the side away from the pressure reducing valve 24.

[0034] During use, when the liquid level detection rod 14 detects liquid, that is, when the fixed box 1 is at risk of being submerged in liquid, a signal will be sent to the first electric valve 25, and the first electric valve 25 will open the switch of the pressurized gas cylinder 19. The high-pressure gas inside it will pass through the pressure reducing valve 24 into the interior of the vent pipe 26, and then reach the interior of the pressurizing head 20.

[0035] Furthermore, in order to maintain a certain micro-positive pressure inside the fixed box 1, the pressure head 20 includes a first sleeve 27 and a second sleeve 28 that are connected to each other, the front side of the first sleeve 27 is connected to the interior of the pressurized airbag 18, the vent pipe 26 is connected to the side of the first sleeve 27, and the rear side of the second sleeve 28 is connected to the interior of the fixed box 1. The first sleeve 27 is provided with an annular protrusion 29 on the side close to the second sleeve 28, and the interior of the second sleeve 28 is fixedly connected to a support frame 30, and the interior of the support frame 30 is coaxially slidably connected to a sliding rod 31, and the side of the sliding rod 31 close to the annular protrusion 29 is fixedly connected to a ball head 32, the front side of the ball head 32 abuts against the annular protrusion 29, and the side of the sliding rod 31 away from the ball head 32 is fixedly connected to a limit plate 33, and the outer side of the sliding rod 31 is provided with a return spring 34, and the front and rear ends of the return spring 34 abut against the ball head 32 and the support frame 30 respectively;

[0036] It should be noted that when the pressurized airbag 18 is not inflated, its shape is adapted to the sealing groove 17. After being inflated with gas, it will expand and squeeze the sealing ring 15 from the side, increasing the contact pressure between the outer side of the sealing ring 15 and the side wall of the sealing groove 17, thereby improving the sealing performance between the sealing ring 15 and the sealing groove 17 and enhancing the waterproof performance of the fixed box 1.

[0037] When in use, when the high-pressure gas inside the pressurized gas cylinder 19 enters the first sleeve 27 through the vent pipe 26, the pressurized airbag 18 is inflated, thereby increasing the waterproof performance between the fixed box 1 and the box cover 2. At the same time, the high-pressure gas will also enter the interior of the second sleeve 28 through the first sleeve 27. At this time, the high-pressure gas will push the ball head 32 backward. At this time, the ball head 32, the sliding rod 31 and the limit plate 33 move backward together under the action of the support frame 30, the return spring 34 is compressed and stored, and the high-pressure gas will pressurize the interior of the fixed box 1, so that The interior of the fixed box 1 is in a slightly positive pressure state. When the sum of the pressure exerted on the ball head 32, the sliding rod 31 and the limit plate 33 in the forward direction by the air pressure inside the fixed box 1 and the forward pressure exerted on the return spring 34 is equal to the air pressure exerted on the ball head 32 in the backward direction by the inside of the second sleeve 28, the ball head 32 will contact and cooperate with the sealing ring 15 to seal the first sleeve 27 and the second sleeve 28, so that the high-pressure gas cylinder will not be deflated all the time. When the air pressure inside the fixed box 1 weakens again, the deflation step will be repeated to ensure the sealing inside the fixed box 1.

[0038] Furthermore, in order to facilitate the fixing of the fixing box 1, a fixing curved groove 35 is formed in the middle of each fixing plate 5, a fixing groove 36 is formed on the front side of each fixing curved groove 35, and a rubber ring 37 is provided inside the fixing groove 36;

[0039] When in use, the bolts can be passed through the fixed curved groove 35. Under the action of the rubber ring 37, the probability of the fixed plate 5 loosening after being fixed can be reduced. The fixed curved groove 35 can reduce the position accuracy of the bolt installation, making it easier for the staff to install.

[0040] Furthermore, in order to improve the overall shockproof performance of the device, the shock absorbing mechanism 7 includes a fixed block 38 fixedly connected to the fixed box 1 and a movable block 39 fixedly connected to the placement plate 6. A shock absorbing groove 40 is provided on the front side of the fixed block 38, and a shock absorbing block 41 adapted to the shock absorbing groove 40 is fixedly connected to the rear side of the movable block 39. A limit block 42 is rotatably connected to the upper side of the placement plate 6. The limit block 42 is also made of rubber, has a certain elasticity, and can undergo a certain elastic deformation. An extension block 43 is fixedly connected to the bottom of the rear side of the limit block 42, and an operating block 44 is fixedly connected to the front side of the limit block 42.

[0041] During use, the shock-absorbing block 41 and the moving block 39 are both made of rubber. When installing the moving block 39 and the shock-absorbing block 41, align each moving block 39 from the upper side of the shock-absorbing groove 40, and then move the placement plate 6 and the moving block 39 downward to make the moving block 39 and the shock-absorbing block 41 cooperate with each other. After the placement plate 6 is moved downward and installed in place, the limiting soft block 42 is rotated upward. The limiting soft block 42 can limit the placement plate 6 so that the moving block 39 on the rear side of the placement plate 6 can always cooperate with the fixed block 38.

[0042] Furthermore, in order to be able to absorb and detect the gas, a limit block 45 is fixedly connected to the middle of the air inlet pipe 9 and the air outlet pipe, and the upper parts of the air inlet pipe 9 and the air outlet pipe are threadedly connected with a first fixing bolt 46 and a second fixing bolt 47. The bottoms of the first connecting pipe 11 and the second connecting pipe 12 are fixedly connected with the corresponding second fixing bolts 47. A second electric valve 48 is provided at the lower part of the first connecting pipe 11 and the second connecting pipe 12. Each second electric valve 48 is electrically connected to the liquid level detection rod 14. An air pump is provided in the middle of the first connecting pipe 11. The air pump is a prior art and will not be described in detail here. It should be noted that the middle part of the first connecting pipe 11 is disconnected and connected to the air inlet end and the air outlet end of the air pump respectively;

[0043] During use, gas can be drawn into the gas detector 13 through the air pump, which can improve the detection efficiency and accuracy of the gas detector 13. When the liquid level detection rod 14 detects liquid, it will also send an electrical signal to the second electric valve 48, so that the second electric valve 48 starts to seal the first connecting pipe 11 and the second connecting pipe 12 to protect the gas detector 13.

[0044] When the present invention is used, the fixed box 1 can be installed first through the fixing plate 5, and the fixed box 1 can be installed in a suitable position. After the box cover 2 is matched with the fixed box 1 through the buckle, the gas detection can be carried out normally. At this time, under the action of the sealing mechanism 3, the fixed box 1 and the box cover 2 can be sealed. During the gas detection process, since the air inlet end and the air outlet end of the gas detector 13 are respectively connected to the air inlet pipe 9 and the air outlet pipe through the first connecting pipe 11 and the second connecting pipe 12, the gas detector 13 can detect the external gas in real time. The gas detector 13 is electrically connected to the control system 8, and can send the gas detection result to the control system 8, and send the detection signal to the host computer at regular intervals through the control system 8, and When the signal is abnormal, an abnormal signal is sent in time to alarm. In addition, the liquid level information of the installation position of the fixed box 1 can be detected through the liquid level detection rod 14. When the liquid level is detected to be too high (that is, when the fixed box 1 is at risk of being submerged in liquid), the liquid level detection rod 14 will send a signal to the pressurizing mechanism 4. The pressurizing mechanism 4 can both pressurize the interior of the fixed box 1 with gas and put the interior of the fixed box 1 in a state of slightly positive pressure, and can further increase the overall protection capability of the fixed box 1 against liquid wet environments. In addition, when installing components, the shock-absorbing mechanism 7 can be used to perform shockproof treatment between the placement plate 6 and the fixed box 1, thereby increasing the number of electronic components (gas detector 13, control system 8, etc.) installed on the placement plate 6.

[0045] The present invention has a novel structure, an ingenious conception, and is simple and convenient to operate. Through this design, the purpose of detecting gas and giving an alarm on time is effectively achieved, the overall sealing effect of the fixed box 1 can be increased, the service life of the device can be increased, a certain micro-positive pressure can be maintained inside the fixed box 1, the sealing performance of the device is increased, the fixing of the fixed box 1 is facilitated, the overall shockproof performance of the device can be improved, and gas can be absorbed and detected.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A combustible gas intelligent detector, comprising a fixed box, characterized in that: The front side of the fixed box is rotatably connected to a box cover, a sealing mechanism is provided between the fixed box and the box cover, the fixed box, the box cover and the sealing mechanism cooperate with each other to form a sealed structure inside the fixed box, a pressurizing mechanism for pressurizing the inside of the fixed box is provided on the side of the box cover close to the fixed box, a plurality of fixing plates for fixing the fixed box are provided on the rear side of the fixed box, a placement plate for fixing electrical components is detachably connected to the inside of the fixed box, a plurality of shock absorbing mechanisms are provided between the placement plate and the fixed box, a control system is connected to the front side of the placement plate, an air intake pipe and an exhaust pipe are provided at the bottom of the fixed box, the upper sides of the air intake pipe and the exhaust pipe are respectively connected to a first connecting pipe and a second connecting pipe, the upper sides of the first connecting pipe and the second connecting pipe are commonly connected to a gas detector, and a liquid level detection rod is provided inside the fixed box.

2. The intelligent combustible gas detector according to claim 1 is characterized in that: The sealing mechanism includes a sealing ring and a sealing gasket. The sealing ring is fixedly connected to the front end surface of the fixed box. A sealing groove is provided on the side of the box cover close to the fixed box. The sealing gasket is arranged inside the sealing groove. The sealing ring and the sealing gasket are both made of rubber. An inflatable pressurized airbag is provided inside the sealing groove.

3. The intelligent combustible gas detector according to claim 2 is characterized in that: The pressurizing mechanism includes a pressurizing gas cylinder and a pressurizing head, the front and rear ends of the pressurizing head are respectively connected to the pressurized airbag and the interior of a fixed box, the box cover is fixedly connected to a first buckle and a second buckle on a side close to the fixed box, the lower side of the second buckle is fixedly connected to a support plate, a pressure reducing valve and a first electric valve are provided on the upper side of the pressurized gas cylinder, the first electric valve is electrically connected to the liquid level detection rod, the air outlet end of the pressure reducing valve is connected to a vent pipe, and the vent pipe is connected to the pressurizing head on a side away from the pressure reducing valve.

4. The intelligent combustible gas detector according to claim 3 is characterized in that: The pressurizing head includes a first sleeve and a second sleeve that are connected to each other, the front side of the first sleeve is connected to the interior of the pressurizing airbag, the rear side of the second sleeve is connected to the interior of the fixed box, an annular protrusion is provided on the side of the first sleeve close to the second sleeve, the interior of the second sleeve is fixedly connected to a support frame, the interior of the support frame is coaxially slidably connected to a sliding rod, the side of the sliding rod close to the annular protrusion is fixedly connected to a ball head, the front side of the ball head abuts against the annular protrusion, the side of the sliding rod away from the ball head is fixedly connected to a limiting plate, and a return spring is mounted on the outer side of the sliding rod, and the front and rear ends of the return spring abut against the ball head and the support frame respectively.

5. The intelligent combustible gas detector according to claim 1 is characterized in that: A fixing curved groove is provided in the middle of each fixing plate, a fixing groove is provided on the front side of each fixing curved groove, and a rubber ring is provided inside the fixing groove.

6. The intelligent combustible gas detector according to claim 1, characterized in that: The shock absorbing mechanism includes a fixed block fixedly connected to the fixed box and a movable block fixedly connected to the placement plate, a shock absorbing groove is provided on the front side of the fixed block, a shock absorbing block adapted to the shock absorbing groove is fixedly connected to the rear side of the movable block, a limiting soft block is rotatably connected to the upper side of the placement plate, an extension block is fixedly connected to the bottom of the rear side of the limiting soft block, and an operating block is fixedly connected to the front side of the limiting soft block.

7. The intelligent combustible gas detector according to claim 1 is characterized in that: The middle parts of the air inlet pipe and the air outlet pipe are fixedly connected with the limiting block, the upper parts of the air inlet pipe and the air outlet pipe are threadedly connected with the first fixing bolt and the second fixing bolt, the bottoms of the first connecting pipe and the second connecting pipe are fixedly connected with the corresponding second fixing bolts, and the lower parts of the first connecting pipe and the second connecting pipe are provided with second electric valves, and each of the second electric valves is electrically connected to the liquid level detection rod.

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