A combustible gas leak detection and monitoring device

Abstract

The utility model relates to the technical field of monitoring equipment, and discloses a combustible gas leak detection and monitoring device, comprising a shell, the shell is cylindrical, a gas sensor is arranged in the shell, the gas sensor is electrically connected to a power supply and a detection circuit board, an air inlet is penetrated through the side wall of the shell, an annular filter is rotatably arranged inside the shell, and a connecting port in contact with the annular filter is fixedly connected to the inner circumference of the air inlet. The utility model arranges a shell, and an air inlet is arranged at the side wall of the shell, gas can enter the shell through the air inlet, a gas sensor is arranged inside the shell to detect combustible gas, and a rotatable annular filter is arranged inside the shell to filter the gas. Since the filter keeps rotating, the gas will not block the filter and affect the air intake.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring instruments, in particular to a combustible gas leakage prevention detection and monitoring device. Background Art

[0002] Combustible gas is a state of combustible material, which refers to the gas that can be uniformly mixed with air (or oxygen) within a certain concentration range to form a premixed gas, which will explode when encountering a fire source, and releases a large amount of energy during the combustion process. Natural gas is a gaseous hydrocarbon produced by the long-term underground deposition of ancient biological remains, which is slowly transformed and metamorphosed and cracked. It is flammable and is mostly produced when crude oil is extracted in oil fields. Natural gas is stored in porous rock formations about 3000-4000 meters underground. The main component is methane, with a specific gravity of 0.65, which is lighter than air and has the characteristics of being colorless, odorless, and non-toxic. Natural gas companies all add odorants in accordance with government regulations for users to smell and identify. According to the state of natural gas reserves, it is divided into three types: tectonic natural gas, water-soluble natural gas, and coal mine natural gas. Tectonic natural gas can be divided into wet natural gas produced with crude oil and dry natural gas without liquid components. If there is a natural gas leak in your home, it is very dangerous, because too much methane diffuses in the air and can cause suffocation. It can also cause explosions of varying sizes when encountering fire.

[0003] Combustible gas detectors are generally used in harsh environments. They detect combustible gas through built-in combustible gas sensors. However, after long-term use of the equipment, dust and impurities in the air will gradually block the air inlet of the detector and affect the operation of the sensor. It needs to be cleaned regularly. Therefore, a combustible gas leak detection and monitoring device is proposed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a combustible gas leak detection and monitoring device. The device is provided with a shell in which a gas sensor can be arranged inside to detect the combustible gas. An air inlet is arranged on the side wall of the shell so that the combustible gas in the air can enter the shell through the air inlet. An annular filter is provided so that the annular filter can rotate inside the shell. Therefore, the filter corresponding to the air inlet can rotate continuously to prevent the air inlet from being blocked and affecting the operation of the sensor after the equipment is used for a long time.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combustible gas leakage detection and monitoring device, comprising a shell, the shell is cylindrical, a gas sensor is arranged in the shell, the gas sensor is electrically connected to a power supply and a detection circuit board, an air inlet is penetrated through the side wall of the shell, an annular filter is rotatably arranged inside the shell, and the inner circumferential surface of the air inlet is fixedly connected to a connecting port in contact with the annular filter.

[0008] Preferably, the annular filter is rotatably arranged inside the shell through a connecting frame, the connecting frame includes a rotating plate, the rotating plate is rotatably arranged on the inner surface of the shell, a rotating ring is arranged on one side of the rotating plate, a plurality of connecting columns are fixedly connected between the rotating plate and the rotating ring, and the annular filter is fixedly connected to the outside of the connecting frame.

[0009] Preferably, the inner circumferential surface of the shell is provided with a cleaning mechanism that fits with the annular filter.

[0010] Preferably, the cleaning mechanism comprises a cleaning roller, the inner circumferential surface of the shell is provided with a groove, and the cleaning roller is rotatably arranged on the inner surface of the groove.

[0011] Preferably, a transmission wheel is rotatably arranged outside the shell, and the transmission wheel is coaxially arranged with the cleaning rollers respectively. A rotating cover is rotatably arranged outside the shell, and the inner circumference of the rotating cover is in contact with the transmission wheel, and the rotating cover is coaxially connected with the rotating plate.

[0012] Preferably, the inner circumferential surface of the rotating ring is provided with internal teeth, the inner surface of the shell is fixedly connected to a driving motor via a bracket, and the output shaft of the driving motor is connected to a gear meshing with the internal teeth.

[0013] Preferably, the outer surface of the shell is provided with a strip groove communicating with the groove.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a combustible gas leakage detection and monitoring device, which has the following beneficial effects:

[0016] By setting a shell, an air inlet is set on the side wall of the shell, and the gas can enter the shell through the air inlet. A gas sensor is set inside the shell to detect the combustible gas. A rotatable annular filter is set inside the shell to filter the gas. Since the filter keeps rotating, the gas will not block the filter and affect the air intake. Specifically, the following effects are achieved:

[0017] 1. The annular filter keeps rotating, and the filter at the air inlet will not be blocked by impurities and dust in the gas. The equipment can be used for a long time without manual cleaning, making it more convenient to use.

[0018] 2. When the annular filter rotates, it comes into contact with the cleaning mechanism, which can clean the annular filter and make the equipment more durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the connection frame structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the top cross-sectional structure of the utility model.

[0023] In the figure: 1. Shell; 2. Gas sensor; 3. Air inlet; 4. Annular filter; 5. Connecting port; 6. Rotating plate; 7. Rotating ring; 8. Connecting column; 9. Cleaning roller; 10. Groove; 11. Transmission wheel; 12. Rotating cover; 13. Bracket; 14. Driving motor; 15. Gear; 16. Strip groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 , a combustible gas leakage detection and monitoring device, comprising a housing 1, such as Figure 3 As shown, the shell 1 is cylindrical, and a gas sensor 2 is arranged in the shell. The gas sensor 2 is electrically connected to a power supply and a detection circuit board. The power supply plays a power supply role, and can be powered by a battery or an external power supply. After the gas sensor 2 detects the combustible gas, an alarm can be issued through the detection circuit board to realize the combustible gas monitoring function. An air inlet 3 is penetrated through the side wall of the shell 1, and external gas enters the shell 1 through the air inlet 3. An annular filter 4 is rotatably arranged inside the shell 1, and the inner circumferential surface of the air inlet 3 is fixedly connected to a connecting port 5 in contact with the annular filter 4, as shown in FIG. Figure 3As shown, the connection port 5 is fitted with the annular filter 4 to ensure that external gas can enter the shell 1 through the annular filter 4. The gas sensor 2 detects the gas, and the annular filter 4 rotates. The annular filter 4 corresponding to the air inlet 3 can also rotate to prevent the gas from entering the shell through one filter for a long time, causing dust and impurities in the air to block the filter.

[0026] Furthermore, the annular filter screen 4 is rotatably arranged inside the housing 1 through a connecting frame, such as Figure 2 As shown, the connecting frame includes a rotating plate 6, which is a circular plate. The rotating plate 6 is coaxially arranged with the shell 1. The rotating plate 6 is rotatably arranged on the inner surface of the shell 1. A rotating ring 7 is arranged on one side of the rotating plate 6. The rotating ring 7 is coaxially arranged with the rotating plate 6. A plurality of connecting columns 8 are fixedly connected between the rotating plate 6 and the rotating ring 7. The annular filter 4 is fixedly connected to the outer side of the connecting frame, thereby supporting the annular filter 4 and driving the annular filter 4 to rotate inside the shell 1.

[0027] Furthermore, the inner circumferential surface of the shell 1 is provided with a cleaning mechanism that fits with the annular filter 4. When the annular filter 4 rotates inside the shell 1, it corresponds to the cleaning mechanism, so that the cleaning mechanism can clean the outside of the annular filter 4, allowing the device to be used for a long time.

[0028] Furthermore, the cleaning mechanism includes a cleaning roller 9, such as Figure 3 As shown, the axis of the cleaning roller 9 is arranged to extend in the same direction as the axis of the housing 1. Figure 4 As shown, the inner circumferential surface of the shell 1 is provided with a groove 10, and the cleaning roller 9 is rotatably arranged on the inner surface of the groove 10. When the annular filter 4 rotates, the cleaning roller 9 contacts and rotates with the annular filter 4, and the cleaning effect is good. Felt material can be used on the surface of the cleaning roller 9, which has a better cleaning effect on dust and impurities.

[0029] Further, the outer part of the housing 1 is provided with a transmission wheel 11, and the transmission wheel 11 is coaxially arranged with the cleaning roller 9, and the outer part of the housing 1 is provided with a rotating cover 12. Figure 3 As shown, the inner circumference of the rotating cover 12 is in contact with the transmission wheel 11, and the rotating cover 12 is coaxially connected to the rotating plate 6. When the connecting frame rotates, the rotating plate 6 drives the rotating cover 12 to rotate synchronously. Since the inner circumference of the rotating cover 12 is in contact with the transmission wheel 11, the transmission wheel 11 is driven to rotate. The cleaning roller 9 is driven by the transmission wheel 11 to rotate to clean the surface of the annular filter 4. In order to ensure the transmission effect, teeth can be set on the inner circumference of the rotating cover 12, and external teeth meshing with the transmission wheel 11 can be set on the outer circumference of the transmission wheel 11.

[0030] Furthermore, the inner circumferential surface of the rotating ring 7 is provided with internal teeth, and the inner surface of the shell 1 is fixedly connected to a driving motor 14 through a bracket 13. The output shaft of the driving motor 14 is connected to a gear 15 meshing with the internal teeth. The driving motor 14 drives the rotating ring 7 to rotate, thereby driving the annular filter 4 to rotate.

[0031] Furthermore, the outer surface of the shell 1 is provided with a strip groove 16 connected to the groove 10, so that when the cleaning roller 9 rotates to clean the dust on the surface of the annular filter 4, the dust can be discharged from the strip groove 16, preventing the dust from accumulating inside the device and affecting the rotation of the cleaning roller 9.

[0032] Working principle: When the utility model is used, the driving motor 14 drives the gear 15 to rotate, and drives the rotating ring 7 to rotate through the internal teeth. The rotating ring 7 drives the rotating plate 6 to rotate synchronously through the connecting column 8, and drives the annular filter 4 to rotate. External gas enters the shell 1 through the annular filter 4 at the air inlet 3 and contacts the gas sensor 2. The gas sensor 2 sends an alarm through the circuit board. The rotating plate 6 can drive the rotating cover 12 to rotate synchronously, and drive the transmission wheel 11 to rotate synchronously. The cleaning roller 9 is driven by the transmission wheel 11 to rotate, and the surface of the annular filter 4 is cleaned.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combustible gas leakage detection and monitoring device, comprising a housing (1), characterized in that: The shell (1) is cylindrical, a gas sensor (2) is arranged inside the shell, the gas sensor (2) is electrically connected to a power supply and a detection circuit board, an air inlet (3) is arranged through the side wall of the shell (1), an annular filter (4) is rotatably arranged inside the shell (1), and a connection port (5) in contact with the annular filter (4) is fixedly connected to the inner circumference of the air inlet (3).

2. A combustible gas leak detection and monitoring device according to claim 1, characterized in that: The annular filter (4) is rotatably arranged inside the shell (1) via a connecting frame, the connecting frame comprising a rotating plate (6), the rotating plate (6) being rotatably arranged on the inner surface of the shell (1), a rotating ring (7) being arranged on one side of the rotating plate (6), a plurality of connecting columns (8) being fixedly connected between the rotating plate (6) and the rotating ring (7), and the annular filter (4) being fixedly connected to the outside of the connecting frame.

3. A combustible gas leak detection and monitoring device according to claim 2, characterized in that: The inner circumferential surface of the shell (1) is provided with a cleaning mechanism which fits the annular filter screen (4).

4. A combustible gas leak detection and monitoring device according to claim 3, characterized in that: The cleaning mechanism comprises a cleaning roller (9); the inner peripheral surface of the housing (1) is provided with a groove (10); and the cleaning roller (9) is rotatably arranged on the inner surface of the groove (10).

5. A combustible gas leak detection and monitoring device according to claim 4, characterized in that: The housing (1) is provided with a transmission wheel (11) for rotation outside, and the transmission wheel (11) is coaxially arranged with the cleaning roller (9). The housing (1) is provided with a rotating cover (12) for rotation outside, and the inner circumference of the rotating cover (12) is in contact with the transmission wheel (11), and the rotating cover (12) is coaxially connected with the rotating plate (6).

6. A combustible gas leak detection and monitoring device according to any one of claims 2 to 5, characterized in that: The inner circumferential surface of the rotating ring (7) is provided with internal teeth, the inner surface of the housing (1) is fixedly connected to a drive motor (14) via a bracket (13), and the output shaft of the drive motor (14) is connected to a gear (15) meshing with the internal teeth.

7. A combustible gas leak detection and monitoring device according to claim 4, characterized in that: The outer surface of the housing (1) is provided with a strip-shaped groove (16) which is in communication with the groove (10).

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