Portable natural gas detector

Abstract

The utility model discloses a portable natural gas detector which comprises a hollow grip, a pipeline coating structure is arranged at the upper end of the hollow grip, a driving structure capable of driving the pipeline coating structure to unfold is arranged on the surface of the hollow grip, and a gas absorption structure is arranged on the inner wall of the pipeline coating structure. A gas detection structure is arranged at the lower end of the hollow grip, the pipeline coating structure comprises a semicircular fixing plate fixedly mounted at the upper end of the hollow grip, and a semicircular rotating plate is rotationally mounted at one end of the semicircular fixing plate through a rotating shaft. According to the portable natural gas detector, by arranging the pipe groove coating structure and the gas absorption structure, compared with the prior art, the multiple suction nozzles can be located on the periphery of the gas pipeline through the pipeline coating structure, and then the gas around the gas pipeline is sucked into the gas storage box to be detected through cooperation of the gas pump and the multiple suction nozzles; therefore, the detection range is enlarged, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas detection, in particular to a portable natural gas detector. Background Technique

[0002] The utility model patent with the Chinese authorization publication number CN213875417U discloses a portable natural gas detector, which includes a detection body. An air suction pipe is fixedly installed on the detection body. A metal probe is fixedly installed at the end of the air suction pipe. A limiting mechanism is fixedly installed at the top of the detection body. A display screen is fixedly installed on the front surface of the detection body. An indicator light is fixedly installed on the front surface of the detection body on one side of the display screen. Control buttons are fixedly installed on the detection body. A wearing mechanism is fixedly installed on the back of the detection body. A connecting sleeve is fixedly installed at the top of the detection body. Fixed feet are fixedly installed on the connecting sleeve. Fixing screws are installed on the fixed feet. A permanent magnet is installed in the connecting sleeve. The portable natural gas detector belongs to the field of natural gas detection equipment, can be conveniently carried, and can prevent the detection probe on the body from shaking randomly.

[0003] However, the device has the following defects when in use: A metal probe is fixedly installed at the end of the air suction pipe of the device. Although it can detect natural gas, the detection range of the metal probe is limited. When the diameter of the gas pipeline is large and the leakage range of the pipeline is small, it is difficult for the device to quickly detect and check large-diameter gas pipelines, resulting in low detection and checking efficiency. In view of the above defects: Therefore, we propose a portable natural gas detector. Content of the Utility Model

[0004] The purpose of the utility model is to provide a portable natural gas detector to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A portable natural gas detector includes a hollow grip. A pipeline coating structure is arranged at the upper end of the hollow grip. A driving structure for driving the pipeline coating structure to unfold is arranged on the surface of the hollow grip. A gas absorption structure is arranged on the inner wall of the pipeline coating structure. A gas detection structure is arranged at the lower end of the hollow grip.

[0006] The pipeline coating structure includes a semi-circular fixed plate fixedly installed at the upper end of the hollow grip. One end of the semi-circular fixed plate is rotatably installed with a semi-circular rotating plate through a rotating shaft.

[0007] The gas absorption structure includes flow guide pipes respectively fixedly installed on the inner ring surfaces of the semi-circular fixed plate and the semi-circular rotating plate, and a plurality of suction nozzles are fixedly installed at equal intervals on the surface of the flow guide pipe.

[0008] The gas detection structure includes a protective shell fixedly installed at the lower end of the hollow grip. An air storage tank and an air pump are respectively and fixedly installed on the inner wall of the protective shell. A natural gas detection sensor is fixedly installed on the inner bottom wall of the air storage tank. An air inlet pipe and an air outlet pipe are respectively and fixedly installed on the surface of the air storage tank. One end of the air inlet pipe passes through the inside of the hollow grip and is fixedly connected to one end of a diversion pipe. The other end of the air inlet pipe is connected to the air inlet end of the air pump.

[0009] Preferably, the air outlet end of the air pump is fixedly connected to an exhaust pipe, and one end of the exhaust pipe extends to the outside of the protective shell.

[0010] Preferably, a torsion spring is sleeved on the surface of the rotating shaft, which can drive the semi-circular rotating plate to close with the semi-circular fixed plate.

[0011] Preferably, the driving structure includes a support plate fixedly installed on the surface of the hollow grip. A pull rod is inserted on the surface of the support plate. One end of the pull rod is hinged with a pulling rope, and the other end of the pulling rope is hinged with the outer ring surface of the semi-circular rotating plate.

[0012] Preferably, a handle is fixedly installed at the lower end of the pull rod. A tension spring is sleeved on the surface of the pull rod. One end of the tension spring is fixedly connected to the upper end of the handle, and the other end of the tension spring is fixedly connected to the lower surface of the support plate.

[0013] Preferably, a guide plate is fixedly installed on the surface of the hollow grip. A guide hole is formed on the surface of the guide plate, and the surface of the pulling rope is slidably connected to the inner wall of the guide hole.

[0014] Preferably, a buzzer electrically connected to the natural gas detection sensor is fixedly installed at the lower end of the protective shell. Beneficial effects

[0015] The utility model provides a portable natural gas detector, which has the following beneficial effects:

[0016] 1. For this portable natural gas detector, by setting the pipe groove coating structure and the gas absorption structure, the gas pipeline is placed between the semi-circular fixed plate and the semi-circular rotating plate. Then, the torsion spring is used to reset to drive the semi-circular fixed plate and the semi-circular rotating plate to form a closed loop. Next, the device is moved along the path of the pipeline, and the gas absorption structure is used to inhale the air around the gas pipeline into the air storage tank for air detection, so as to judge whether there is gas leakage. Compared with the prior art, this device uses the pipeline coating structure to enable multiple suction nozzles to be around the gas pipeline, and then uses the air pump to cooperate with multiple suction nozzles to inhale the gas around the gas pipeline into the air storage tank for detection. Therefore, the detection range is increased and the detection efficiency is improved.

[0017] 2. The portable natural gas detector is provided with a driving structure. Pulling the handle downward can drive the pull rod to descend, thereby driving the pulling rope to pull the semi-circular rotating plate to rotate. At this time, the semi-circular rotating plate will separate from the semi-circular fixed plate to form an opening, so that the pipeline coating structure can be withdrawn from the gas pipeline along the opening, which facilitates the pipeline coating structure to enter and exit the top-layer gas pipeline and is convenient for the inspection of the top-layer gas pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 is a front-sectional structural schematic diagram of the support plate of the present utility model;

[0020] Figure 3 is a top-sectional structural schematic diagram of the pipeline coating structure of the present utility model;

[0021] Figure 4 is a front-sectional structural schematic diagram of the protective shell of the present utility model.

[0022] In the figure: 1 hollow grip, 2 semi-circular fixed plate, 3 semi-circular rotating plate, 4 diversion pipe, 5 suction nozzle, 6 protective shell, 7 gas storage tank, 8 air pump, 9 natural gas detection sensor, 10 intake pipe, 11 outlet pipe, 12 exhaust pipe, 13 torsion spring, 14 support plate, 15 pull rod, 16 pulling rope, 17 handle, 18 tension spring, 19 guide plate, 20 buzzer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-4 , the present utility model provides a technical solution: a portable natural gas detector, including a hollow grip 1. A pipeline coating structure is provided at the upper end of the hollow grip 1. The pipeline coating structure includes a semi-circular fixed plate 2 fixedly installed at the upper end of the hollow grip 1. One end of the semi-circular fixed plate 2 is rotatably installed with a semi-circular rotating plate 3 through a rotating shaft. A torsion spring 13 that can drive the semi-circular rotating plate 3 to close with the semi-circular fixed plate 2 is sleeved on the surface of the rotating shaft. The gas pipeline is placed between the semi-circular fixed plate 2 and the semi-circular rotating plate 3, and then the torsion spring 13 is reset to drive the semi-circular fixed plate 2 and the semi-circular rotating plate 3 to form a closed loop.

[0025] The inner wall of the pipeline coating structure is provided with a gas absorption structure. The gas absorption structure includes flow guide pipes 4 respectively and fixedly installed on the inner ring surfaces of the semi-circular fixing plate 2 and the semi-circular rotating plate 3, and a plurality of suction nozzles 5 are fixedly installed at equal intervals on the surface of the flow guide pipes 4. When the semi-circular fixing plate 2 and the semi-circular rotating plate 3 are on the surface of the gas pipeline, at this time, the plurality of suction nozzles 5 are around the gas pipeline.

[0026] A gas detection structure is provided at the lower end of the hollow grip 1. The gas detection structure includes a protective shell 6 fixedly installed at the lower end of the hollow grip 1. A gas storage tank 7 and an air pump 8 are respectively and fixedly installed on the inner wall of the protective shell 6. A natural gas detection sensor 9 is fixedly installed on the inner bottom wall of the gas storage tank 7. A buzzer 20 electrically connected to the natural gas detection sensor 9 is fixedly installed at the lower end of the protective shell 6. When the natural gas detection sensor 9 detects that there is gas in the gas storage tank 7, at this time, the buzzer 20 will give an alarm.

[0027] An air inlet pipe 10 and an air outlet pipe 11 are respectively and fixedly installed on the surface of the gas storage tank 7. One end of the air inlet pipe 10 passes through the inside of the hollow grip 1 and is fixedly connected to one end of the flow guide pipe 4. The other end of the air inlet pipe 10 is connected to the air inlet end of the air pump 8. The air outlet end of the air pump 8 is fixedly connected to an exhaust pipe 12, and one end of the exhaust pipe 12 extends to the outside of the protective shell 6. After the plurality of suction nozzles 5 are around the gas pipeline, then move the device along the path of the pipeline. At this time, driving the air pump 8 can suck the air around the gas pipeline into the air inlet pipe 10 by using the plurality of suction nozzles 5 and transport it into the gas storage tank 7 through the air inlet pipe 10, so as to use the natural gas detection sensor 9 to detect whether there is gas component in the gas storage tank 7 and judge whether there is gas leakage. At the same time, the air pump 8 can pump out the gas in the gas storage tank 7 and discharge it to the outside along the exhaust pipe 12.

[0028] Compared with the prior art, this device can make the plurality of suction nozzles 5 around the gas pipeline by using the pipeline coating structure, and then use the air pump 8 to cooperate with the plurality of suction nozzles 5 to suck the gas around the gas pipeline into the gas storage tank 7 for detection. Therefore, the detection range is increased and the detection efficiency is improved.

[0029] A driving structure for driving the pipeline coating structure to unfold is provided on the surface of the hollow grip 1. The driving structure includes a support plate 14 fixedly installed on the surface of the hollow grip 1. A pull rod 15 is inserted on the surface of the support plate 14. One end of the pull rod 15 is hinged with a pulling rope 16. The other end of the pulling rope 16 is hinged with the outer ring surface of the semi-circular rotating plate 3. A guide plate 19 is fixedly installed on the surface of the hollow grip 1. A guide hole is opened on the surface of the guide plate 19, and the surface of the pulling rope 16 is slidably connected with the inner wall of the guide hole. The guide hole can guide the pulling rope 16.

[0030] A handle 17 is fixedly installed at the lower end of the pull rod 15. A tension spring 18 is sleeved on the surface of the pull rod 15. One end of the tension spring 18 is fixedly connected to the upper end of the handle 17, and the other end of the tension spring 18 is fixedly connected to the lower surface of the support plate 14.

[0031] Pulling the handle 17 downward can drive the pull rod 15 to descend, thereby driving the pulling rope 16 to pull the semi-circular rotating plate 3 to rotate. At this time, the semi-circular rotating plate 3 will separate from the semi-circular fixing plate 2 to form an opening, so that the pipeline coating structure can be withdrawn from the gas pipeline along the opening, which facilitates the pipeline coating structure to enter and exit the top gas pipeline and is convenient for the inspection of the top gas pipeline.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable natural gas detector, comprising a hollow handle (1), characterized in that: The upper end of the hollow handle (1) is provided with a pipe covering structure, the surface of the hollow handle (1) is provided with a driving structure capable of driving the pipe covering structure to unfold, the inner wall of the pipe covering structure is provided with a gas absorption structure, and the lower end of the hollow handle (1) is provided with a gas detection structure; The pipe covering structure comprises a semicircular fixed plate (2) fixedly mounted on the upper end of the hollow handle (1), and a semicircular rotating plate (3) is rotatably mounted on one end of the semicircular fixed plate (2) via a rotating shaft; The gas absorption structure comprises a flow guide pipe (4) respectively fixedly mounted on the inner annular surface of a semicircular fixed plate (2) and a semicircular rotating plate (3), and a plurality of suction nozzles (5) are fixedly mounted at equal intervals on the surface of the flow guide pipe (4); The gas detection structure comprises a protective shell (6) fixedly mounted at the lower end of a hollow handle (1), a gas storage box (7) and an air pump (8) being fixedly mounted on the inner wall of the protective shell (6), a natural gas detection sensor (9) being fixedly mounted on the inner bottom wall of the gas storage box (7), an air inlet pipe (10) and an air outlet pipe (11) being fixedly mounted on the surface of the gas storage box (7), one end of the air inlet pipe (10) passing through the interior of the hollow handle (1) and being fixedly connected to one end of a flow guide pipe (4), and the other end of the air inlet pipe (10) being connected to the air inlet end of the air pump (8).

2. A portable natural gas detector according to claim 1, characterized in that: The air outlet end of the air pump (8) is fixedly connected to an exhaust pipe (12), and one end of the exhaust pipe (12) extends to the outside of the protective shell (6).

3. A portable natural gas detector according to claim 1, characterized in that: The surface of the rotating shaft is sleeved with a torsion spring (13) capable of driving the semicircular rotating plate (3) and the semicircular fixed plate (2) to close.

4. A portable natural gas detector according to claim 1, characterized in that: The driving structure comprises a support plate (14) fixedly mounted on the surface of the hollow handle (1), a pull rod (15) being inserted into the surface of the support plate (14), a pull rope (16) being hingedly connected to one end of the pull rod (15), and the other end of the pull rope (16) being hingedly connected to the outer ring surface of the semicircular rotating plate (3).

5. A portable natural gas detector according to claim 4, characterized in that: A handle (17) is fixedly mounted on the lower end of the pull rod (15), a tension spring (18) is sleeved on the surface of the pull rod (15), one end of the tension spring (18) is fixedly connected to the upper end of the handle (17), and the other end of the tension spring (18) is fixedly connected to the lower surface of the support plate (14).

6. A portable natural gas detector according to claim 4, characterized in that: A guide plate (19) is fixedly mounted on the surface of the hollow handle (1), a guide hole is provided on the surface of the guide plate (19), and the surface of the pulling rope (16) is slidably connected to the inner wall of the guide hole.

7. A portable natural gas detector according to claim 4, characterized in that: A buzzer (20) electrically connected to the natural gas detection sensor (9) is fixedly mounted on the lower end of the protective shell (6).

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