Combustible gas detector with underground Internet of Things function

Abstract

The invention relates to the technical field of combustible gas detectors, in particular to a combustible gas detector with an underground Internet of Things function, which comprises a gas exchange seat, a mounting mechanism rotatably connected to the bottom of the gas exchange seat, a combustible gas detector main body fixedly mounted at the bottom of the gas exchange seat, and a fixing frame fixedly connected to the bottom of the gas exchange seat. A movable frame is arranged on the fixed frame in a sliding fit mode, a protective cover is rotatably connected to the interior of the movable frame, an automatic maintenance mechanism is rotatably connected to the movable seat, and in the using process of the combustible gas detector, dust on the surface of the gas sensor is cleaned and maintained regularly through the automatic maintenance mechanism; the dust on the surface of the gas sensor can be automatically cleaned by utilizing the brush frame which rotates and swings in a reciprocating manner, the sensor can accurately read the gas concentration, the possibility of false alarm and missing alarm is reduced, the manual cleaning frequency is reduced through an automatic maintenance mechanism, and the labor cost and the maintenance workload are reduced, so that the service life of the sensor is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of combustible gas detectors, and in particular to a combustible gas detector with underground Internet of Things function. Background Art

[0002] The combustible gas detector with underground IoT function is a device used to monitor combustible gas leaks in underground environments. It is widely used in mining, tunnels, underground pipelines and other places. The following is a detailed introduction to this detector: Gas detection: The detector can monitor a variety of combustible gases (such as methane, propane, etc.) in real time and detect changes in gas concentration through sensors. Data acquisition and transmission: The detector is usually equipped with an Internet of Things (IoT) module, which can transmit the detected data to a cloud platform or a local monitoring system through a wireless network (such as NB-IoT, LoRa, etc.). Alarm system: When the gas concentration exceeds the set safety threshold, the detector will sound an alarm (sound and light alarm) and can send alarm information to relevant personnel through the IoT system. Environmental monitoring: Some high-end detectors can also monitor environmental parameters such as temperature and humidity to improve the accuracy of safety monitoring.

[0003] Existing combustible gas detectors use gas sensors to detect combustible gas in underground cable wells. However, on rainy days, sewage will be stored in the underground cable wells. At this time, the mud and sand in the sewage will adhere to the sensor surface. Existing combustible gas detectors are not convenient for cleaning and maintaining the mud and sand on the sensor surface. The mud and sand attached to the sensor surface will interfere with the normal entry of gas, causing the detector to be unable to accurately detect the gas concentration. The presence of mud and sand may cause the detector to falsely report or miss reports, increasing safety risks.

[0004] In summary, the prior art lacks a technology for automatically maintaining the gas sensor of the combustible gas detector. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a combustible gas detector with underground Internet of Things function.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is: a combustible gas detector with underground Internet of Things function, including a ventilation seat, a mounting mechanism is rotatably connected to the bottom of the ventilation seat, a combustible gas detector body is fixedly installed on the bottom of the ventilation seat, a fixed frame is fixedly connected to the bottom of the ventilation seat, a mobile frame is slidably provided on the fixed frame, a protective cover is rotatably connected in the mobile frame, a mobile seat is slidably provided in the protective cover, and an automatic maintenance mechanism is rotatably connected on the mobile seat.

[0007] Preferably, an exhaust fan is fixedly installed in the ventilation seat, a plurality of air guide ports are provided at both upper and lower ends of the ventilation seat, a hydraulic rod is rotatably connected in the ventilation seat, a sealing cover is rotatably connected in the ventilation seat, and the other end of the hydraulic rod is rotatably connected to the sealing cover.

[0008] Preferably, the mounting mechanism includes a rotating shaft, which is rotatably connected to the lower surface of the ventilation seat, a worm wheel is fixedly connected to the rotating shaft, a worm is meshingly transmitted with a worm on one side of the worm wheel, the worm is rotatably connected to the lower surface of the ventilation seat, and a gear is fixedly connected to the bottom end of the rotating shaft.

[0009] Preferably, two racks are provided on both sides of the gear in a centrally symmetrical structure for meshing transmission, a support frame is fixedly connected to the rack, a positioning block is slidingly provided on the outer wall of the support frame, the positioning block is fixedly connected to the lower surface of the ventilation seat, and a rubber pad is fixedly connected to the outer end of the support frame.

[0010] Preferably, an antenna is fixedly provided on the combustible gas detector body via a wire connection, two hanging plates are fixedly provided on the combustible gas detector body, a gas sensor is fixedly provided on the bottom of the combustible gas detector body, and a water level sensor is fixedly provided on the bottom of the combustible gas detector body.

[0011] Preferably, a slider is connected and fixedly provided on the movable frame, and the slider is slidably matched with the fixed frame. An electric push rod A is connected and fixedly provided at one end of the slider, and the electric push rod A is connected and fixedly provided through the fixed frame.

[0012] Preferably, a motor A is fixedly connected to the bottom end of the protective cover, and the motor A is fixedly installed on the inner wall of the bottom end of the movable frame. An electric push rod B is fixedly connected to the inner wall of the bottom end of the protective cover, and the output end of the electric push rod B is fixedly connected to the movable seat.

[0013] Preferably, the automatic maintenance mechanism includes a rotating frame, which is rotatably connected to the movable seat, a motor B is fixedly connected to the bottom end of the rotating frame, the motor B is fixedly installed on the inner wall of the movable seat, an L-shaped rod is rotatably connected to the rotating frame, and a brush rack is fixedly connected to the top end of the L-shaped rod.

[0014] Preferably, a turntable is rotatably connected to the rotating frame, a transmission wheel is fixedly connected to the bottom end of the turntable, an annular rack is fixedly connected to the movable seat, the annular rack is meshed with the transmission wheel for transmission, a connecting rod is rotatably connected to the turntable near the outer circle, and the other end of the connecting rod is rotatably connected to the L-shaped rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. During the use of the combustible gas detector, the dust on the surface of the gas sensor is cleaned and maintained regularly through the automatic maintenance mechanism. The dust on the surface of the gas sensor can be automatically cleaned by the rotating and reciprocating brush holder to ensure that the sensor can accurately read the gas concentration and reduce the possibility of false alarms and missed alarms. The automatic maintenance mechanism reduces the frequency of manual cleaning, reduces labor costs and maintenance workload, and thus extends the service life of the sensor; 2. By setting up a ventilation seat and installing an exhaust fan in the ventilation seat, when excessive combustible gas is detected in the cable well, the combustible gas in the well can be quickly diluted to reduce the gas concentration and increase the inflow of fresh air, thereby reducing the risk of explosion and improving the safety of workers entering the cable well. At the same time, the rotatable sealing cover can prevent accumulated water from entering the ventilation seat, thereby increasing the service life of the ventilation seat; 3. By setting up the installation mechanism and using two support frames to support the cable well mouth, drilling and installation in the well mouth can be avoided, thus avoiding damage to the well mouth structure, maintaining the integrity and stability of the well mouth, and facilitating the installation of the combustible gas detector. It is suitable for cable well mouths of different sizes and increases the flexibility of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a combustible gas detector with underground IoT function according to the present invention; Figure 2 It is a schematic diagram of the overall structure of a combustible gas detector with underground IoT function during automatic maintenance of the present invention; Figure 3 It is a cross-sectional expansion schematic diagram of the ventilation seat structure of a combustible gas detector with underground IoT function according to the present invention; Figure 4 This is a schematic diagram of the installation structure of a combustible gas detector with underground IoT function according to the present invention; Figure 5 A schematic diagram of the main structure of a combustible gas detector with underground IoT function according to the present invention; Figure 6 This is a schematic diagram of the structure of a mobile frame of a combustible gas detector with an underground IoT function according to the present invention; Figure 7 This is a schematic diagram of the protective cover structure of a combustible gas detector with underground IoT function according to the present invention; Figure 8 The present invention is a schematic cross-sectional view of an automatic maintenance mechanism and a movable seat structure of a combustible gas detector with underground IoT function.

[0017] 1. Ventilation seat; 2. Installation mechanism; 3. Combustible gas detector body; 4. Fixed frame; 5. Mobile frame; 6. Protective cover; 7. Mobile seat; 8. Automatic maintenance mechanism; 101. Exhaust fan; 102. Air guide port; 103. Hydraulic rod; 104. Sealing cover; 201. Rotating shaft; 202. Worm gear; 203. Worm; 204. Gear; 205. Rack; 206. Support frame; 207. Positioning block; 301. Antenna; 302. Hanging piece; 303. Gas sensor; 304. Water level sensor; 501. Slider; 502. Electric push rod A; 601. Motor A; 602. Electric push rod B; 801. Rotating frame; 802. Motor B; 803. L-shaped rod; 804. Brush holder; 805. Turntable; 806. Transmission wheel; 807. Connecting rod; 701. Ring rack. DETAILED DESCRIPTION

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0019] like Figure 1-Figure 8 A combustible gas detector with underground Internet of Things function shown in the figure includes a ventilation seat 1, a mounting mechanism 2 is rotatably connected to the bottom of the ventilation seat 1, a combustible gas detector body 3 is fixedly installed on the bottom of the ventilation seat 1, a fixed frame 4 is fixedly connected to the bottom of the ventilation seat 1, a mobile frame 5 is slidably provided on the fixed frame 4, a protective cover 6 is rotatably connected inside the mobile frame 5, a mobile seat 7 is slidably provided inside the protective cover 6, and an automatic maintenance mechanism 8 is rotatably connected on the mobile seat 7.

[0020] like Figure 3 As shown, an exhaust fan 101 is fixedly installed in the ventilation seat 1, a plurality of air guide ports 102 are provided at both the upper and lower ends of the ventilation seat 1, a hydraulic rod 103 is rotatably connected in the ventilation seat 1, a sealing cover 104 is rotatably connected in the ventilation seat 1, and the other end of the hydraulic rod 103 is rotatably connected to the sealing cover 104. The sealing cover 104 is driven to rotate by the hydraulic rod 103, so that the air guide ports 102 on the ventilation seat 1 are connected, and the exhaust fan 101 can be used to ventilate the gas in the cable well.

[0021] like Figure 4As shown, the mounting mechanism 2 includes a rotating shaft 201, which is rotatably connected to the lower surface of the ventilation seat 1, a worm wheel 202 is fixedly connected to the rotating shaft 201, a worm 203 is meshingly provided on one side of the worm wheel 202, the worm 203 is rotatably connected to the lower surface of the ventilation seat 1, and a gear 204 is fixedly connected to the bottom end of the rotating shaft 201. The worm 203 is rotated, so that the worm 203 drives the rotating shaft 201 connected to the worm wheel 202 to rotate, and at this time, the rotating shaft 201 drives the gear 204 to rotate, so that the gear 204 drives the support frame 206 connected to the two racks 205 to move outward against the inner wall of the wellhead for fixing.

[0022] Two racks 205 are arranged on both sides of the gear 204 in a centrally symmetrical structure for meshing transmission. A support frame 206 is fixedly connected to the rack 205. A positioning block 207 is slidingly provided on the outer wall of the support frame 206. The positioning block 207 is fixedly connected to the lower surface of the ventilation seat 1, and a rubber pad is fixedly connected to the outer end of the support frame 206.

[0023] like Figure 5 As shown, an antenna 301 is fixedly provided on the combustible gas detector body 3 through a wire connection, two hanging pieces 302 are fixedly provided on the combustible gas detector body 3, a gas sensor 303 is fixedly provided on the bottom of the combustible gas detector body 3, and a water level sensor 304 is fixedly provided on the bottom of the combustible gas detector body 3. The water level sensor 304 is a trigger type water level sensor 304.

[0024] like Figure 6 As shown, a slider 501 is connected and fixedly arranged on the mobile frame 5, and the slider 501 is slidably matched with the fixed frame 4. An electric push rod A502 is connected and fixedly arranged at one end of the slider 501, and the electric push rod A502 is connected and fixedly arranged through the fixed frame 4. The electric push rod A502 drives the mobile frame 5 connected with the slider 501 to move to a suitable position.

[0025] like Figure 7 As shown, the bottom end of the protective cover 6 is connected and fixedly provided with a motor A601, the motor A601 is fixedly installed with the inner wall of the bottom end of the moving frame 5, the inner wall of the bottom end of the protective cover 6 is connected and fixedly provided with an electric push rod B602, and the output end of the electric push rod B602 is connected and fixedly provided with the moving seat 7. The motor A601 is used to drive the protective cover 6 to rotate, so that the opening of the protective cover 6 is located outside, and then the electric push rod B602 is used to drive the moving seat 7 to move out, so that the automatic maintenance mechanism 8 is located at the gas sensor 303.

[0026] like Figure 8As shown, the automatic maintenance mechanism 8 includes a rotating frame 801, which is rotatably connected to the moving seat 7, a motor B802 is fixedly connected to the bottom end of the rotating frame 801, and the motor B802 is fixedly installed on the inner wall of the moving seat 7, an L-shaped rod 803 is rotatably connected to the rotating frame 801, and a brush holder 804 is fixedly connected to the top end of the L-shaped rod 803.

[0027] A rotating disc 805 is rotatably connected to the rotating frame 801, a transmission wheel 806 is fixedly connected to the bottom of the rotating disc 805, an annular rack 701 is fixedly connected to the moving seat 7, the annular rack 701 is meshed with the transmission wheel 806 for transmission, a connecting rod 807 is rotatably connected to the rotating disc 805 near the outer circle, and the other end of the connecting rod 807 is rotatably connected to the L-shaped rod 803. The rotating frame 801 is driven to rotate by the motor B802, which drives the brush holder 804 to rotate around the gas sensor 303. At this time, under the action of the annular rack 701, the transmission wheel 806 rotates, and the transmission wheel 806 drives the connected rotating disc 805 to rotate, so that the rotating disc 805 drives the eccentrically connected connecting rod 807, so that the connecting rod 807 drives the brush holder 804 connected to the L-shaped rod 803 to swing back and forth quickly.

[0028] Working principle: When combustible gas detection is required in a cable well, the device is placed in the cable well, and then the worm 203 is rotated, so that the worm 203 drives the rotating shaft 201 connected to the worm wheel 202 to rotate, and the rotating shaft 201 drives the gear 204 to rotate, so that the gear 204 drives the support frame 206 connected to the two racks 205 to move outward against the inner wall of the wellhead for fixation; Then the device adopts intensive gas collection method and intermittent data transmission method. The instrument collects the concentration in the cable well according to the sampling method of once every 10 minutes. When there is no gas leakage at the detection site, the instrument sends heartbeat data to the data center according to the set normal interval time of about 6 hours; when the concentration in the cable well is detected, the instrument immediately reports the data. When the gas concentration does not exceed the set alarm value of 20%LEL, the gas concentration at the data center is displayed in black. If the gas concentration exceeds the set alarm value of 20%LEL, the gas concentration at the data center will display a red alarm state. At this time, through remote control, the hydraulic rod 103 is used to drive the sealing cover 104 to rotate, so that the air guide port 102 on the ventilation seat 1 is turned on. At this time, the exhaust fan 101 can be used to ventilate the gas in the cable well to reduce the concentration of combustible gas and ensure safety. The water level on the instrument site is detected in real time through the installed trigger water level sensor 304. When the water level is about to submerge the trigger water level sensor 304, the instrument can detect the water level alarm and send the water level alarm information to the data center; when the water level drops below the safety line, the instrument sends the water level release information to the data center; When the mud and sand on the surface of the gas sensor 303 and the water level sensor 304 need to be cleaned, the electric push rod A502 is used to drive the mobile frame 5 connected to the slider 501 to move to a suitable position, and then the motor A601 is used to drive the protective cover 6 to rotate so that the opening of the protective cover 6 is located outside, and then the electric push rod B602 is used to drive the mobile seat 7 to move out so that the automatic maintenance mechanism 8 is located at the gas sensor 303; Then, the motor B802 is used to drive the rotating frame 801 to rotate, which will drive the brush frame 804 to revolve around the gas sensor 303. At this time, under the action of the annular rack 701, the transmission wheel 806 rotates. At this time, the transmission wheel 806 drives the connected turntable 805 to rotate, so that the turntable 805 drives the eccentrically connected connecting rod 807, and the connecting rod 807 drives the brush frame 804 connected to the L-shaped rod 803 to swing back and forth rapidly, so as to clean the mud and sand on the surface of the gas sensor 303 or the water level sensor 304.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An underground combustible gas detector with Internet of Things function, comprising a ventilation seat (1), characterized in that: The bottom of the ventilation seat (1) is rotatably connected to a mounting mechanism (2), the bottom of the ventilation seat (1) is fixedly mounted with a combustible gas detector body (3), the bottom of the ventilation seat (1) is fixedly connected to a fixing frame (4), the fixing frame (4) is slidably provided with a moving frame (5), the moving frame (5) is rotatably connected to a protective cover (6), the protective cover (6) is slidably provided with a moving seat (7), and the moving seat (7) is rotatably connected to an automatic maintenance mechanism (8).

2. The underground combustible gas detector with IoT function according to claim 1, characterized in that: An exhaust fan (101) is fixedly installed in the ventilation seat (1), a plurality of air guide ports (102) are provided at both upper and lower ends of the ventilation seat (1), a hydraulic rod (103) is rotatably connected to the ventilation seat (1), a sealing cover (104) is rotatably connected to the ventilation seat (1), and the other end of the hydraulic rod (103) is rotatably connected to the sealing cover (104).

3. The underground combustible gas detector with IoT function according to claim 1, characterized in that: The mounting mechanism (2) comprises a rotating shaft (201), the rotating shaft (201) being rotatably connected to the lower surface of the ventilation seat (1), a worm wheel (202) being fixedly connected to the rotating shaft (201), a worm gear (203) being meshingly provided on one side of the worm gear (202), the worm gear (203) being rotatably connected to the lower surface of the ventilation seat (1), and a gear (204) being fixedly provided at the bottom end of the rotating shaft (201).

4. The underground combustible gas detector with IoT function according to claim 3 is characterized by: Two racks (205) are provided on both sides of the gear (204) in a centrally symmetrical structure for meshing transmission; a support frame (206) is fixedly connected to the rack (205); a positioning block (207) is provided on the outer wall of the support frame (206) for sliding cooperation; the positioning block (207) is fixedly connected to the lower surface of the ventilation seat (1); and a rubber pad is fixedly connected to the outer end of the support frame (206).

5. The underground combustible gas detector with IoT function according to claim 1, characterized in that: An antenna (301) is fixedly provided on the combustible gas detector body (3) via a wire connection, two hanging pieces (302) are fixedly provided on the combustible gas detector body (3), a gas sensor (303) is fixedly provided on the bottom of the combustible gas detector body (3), and a water level sensor (304) is fixedly provided on the bottom of the combustible gas detector body (3).

6. The underground combustible gas detector with IoT function according to claim 1, characterized in that: A slider (501) is fixedly connected to the movable frame (5), and the slider (501) is slidably matched with the fixed frame (4). An electric push rod A (502) is fixedly connected to one end of the slider (501), and the electric push rod A (502) is fixedly connected to the fixed frame (4) in a penetrating manner.

7. The underground combustible gas detector with IoT function according to claim 1, characterized in that: The bottom end of the protective cover (6) is connected and fixedly provided with a motor A (601), and the motor A (601) is fixedly installed on the inner wall of the bottom end of the movable frame (5). The inner wall of the bottom end of the protective cover (6) is connected and fixedly provided with an electric push rod B (602), and the output end of the electric push rod B (602) is connected and fixedly provided with the movable seat (7).

8. The underground combustible gas detector with IoT function according to claim 1, characterized in that: The automatic maintenance mechanism (8) comprises a rotating frame (801), the rotating frame (801) and the movable seat (7) are rotatably connected, a motor B (802) is fixedly connected to the bottom end of the rotating frame (801), the motor B (802) is fixedly mounted to the inner wall of the movable seat (7), an L-shaped rod (803) is rotatably connected to the rotating frame (801), and a brush holder (804) is fixedly connected to the top end of the L-shaped rod (803).

9. The underground combustible gas detector with IoT function according to claim 8, characterized in that: A rotating disc (805) is rotatably connected to the rotating frame (801), a transmission wheel (806) is fixedly connected to the bottom end of the rotating disc (805), an annular rack (701) is fixedly connected to the movable seat (7), the annular rack (701) is meshed with the transmission wheel (806) for transmission, a connecting rod (807) is rotatably connected to the rotating disc (805) near the outer circle, and the other end of the connecting rod (807) is rotatably connected to the L-shaped rod (803).

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