Gas leakage detector

Abstract

The utility model provides a gas leakage detector which comprises a main box, a detection cylinder composed of a fixed cylinder and a rotating cylinder is arranged on one side of the main box, rubber mats of semicircular structures are arranged at the upper ends and the lower ends of the fixed cylinder and the rotating cylinder, and sealing plates clamped between the fixed cylinder and the rotating cylinder are arranged at the upper end and the lower end of the detection cylinder. A gas detection sensor is mounted on the inner side of the fixed cylinder; a power source is arranged at one end in the main box, a main air inlet channel is arranged at the bottom of the main box, one end of the main air inlet channel is exposed out of the fixed cylinder, an air outlet hole used for exhausting air is formed in the rotating cylinder, an auxiliary air inlet channel is formed in the upper portion of the main box, and an open hole connected with the main air inlet channel is formed in one end of the auxiliary air inlet channel. According to the utility model, the gas detection sensor in the detection cylinder can simultaneously measure the gas above and below the detector, the measurement range and the detection efficiency are increased, the function of finding a pipeline leakage point is added on the basis of the existing detector, and the application range of the detector is widened.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas leakage detection, in particular to a gas leakage detector. Background Art

[0002] Every household in the city needs natural gas. Whether it is using hot weather pipelines or gas cylinders, you must pay attention to safety. If natural gas leaks and is not discovered in time, it will cause explosions or even fires, causing huge losses to the lives and property of families and neighbors.

[0003] Most existing households are equipped with gas leak detectors to monitor the safety of gas use. However, existing detectors have a single function and can only detect whether there is gas in the air. In addition, existing detectors do not have the ability to actively intake air and can only detect the gas when it naturally diffuses to the location where the detector is installed, which is inefficient. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a gas leakage detector, and the technical solution adopted is as follows:

[0005] A gas leak detector comprises a main box, a detection cylinder consisting of a fixed cylinder and a rotating cylinder is arranged on one side of the main box, rubber pads with semicircular structures are arranged at both upper and lower ends of the fixed cylinder and the rotating cylinder, sealing plates are arranged between the fixed cylinder and the rotating cylinder at both upper and lower ends of the detection cylinder, and a gas detection sensor is installed inside the fixed cylinder;

[0006] A power source is provided at one end of the main box, a main air inlet is provided at the bottom of the main box, one end of the main air inlet is exposed from the fixed cylinder, an outlet hole for exhausting gas is provided in the rotating cylinder, a secondary air inlet is provided above the main box, and an opening connected to the main air inlet is provided at one end of the secondary air inlet.

[0007] Furthermore, sealing plates are provided at both upper and lower ends of the detection cylinder and are clamped between the fixed cylinder and the rotating cylinder. The sealing plates can be removed or installed according to different working modes of the detector.

[0008] Furthermore, the fixed cylinder is fixedly connected to the main box, and the rotating cylinder is movably connected to the fixed cylinder. The rotating cylinder can rotate outward with the connection point with the fixed cylinder as the center of the circle, and the rotation angle range is 0-180 degrees.

[0009] Furthermore, a protruding raised handle is provided at one end of the rotating cylinder, and a magnetic attraction for mutual attraction is provided at the opening and closing part of the fixed cylinder and the rotating cylinder.

[0010] Furthermore, an air intake fan is provided inside the main air intake duct, and filters are provided at the outer ends of the main air intake duct and the auxiliary air intake duct. While the main air intake duct is intaken, the auxiliary air intake duct will also intake air into the detection cylinder under the Venturi effect, thereby improving the detection efficiency.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model sets a main air inlet duct and a secondary air inlet duct in the main box, and adds an air inlet fan in the main air inlet duct, so that the gas detection sensor inside the detection tube can simultaneously measure the gas above and below the detector, thereby increasing the measurement range and detection efficiency.

[0013] 2. The utility model provides a rotating cylinder that can be rotatably opened, and reserves openings for placing pipelines at the center positions of the upper and lower ends of the fixed cylinder and the rotating cylinder. On the basis of the existing detector, the function of finding pipeline leakage points can be added to improve the application range of the detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model after the rotating drum is opened;

[0016] Figure 3 This is a schematic diagram of the state of the utility model when detecting the pipeline;

[0017] Figure 4 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 5 It is a schematic diagram of the connection structure between the fixed cylinder and the rotating cylinder of the utility model.

[0019] In the figure:

[0020] 1-main box, 11-main air inlet, 12-auxiliary air inlet, 13-intake fan, 14-filter, 15-power supply, 2-fixed cylinder, 3-rotating cylinder, 31-raised handle, 32-air outlet, 4-rubber pad, 5-magnetic suction, 6-sealing plate, 7-gas sensor. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0022] As attached Figure 1-5 shown.

[0023] A gas leak detector comprises a main box 1. A detection cylinder consisting of a fixed cylinder 2 and a rotating cylinder 3 is arranged on one side of the main box 1, wherein the fixed cylinder 2 is fixedly connected to the main box 1, and the rotating cylinder 3 is movably connected to the fixed cylinder 2. The rotating cylinder 3 can rotate outward 0-180 degrees with the connection point with the fixed cylinder 2 as the center of the circle.

[0024] A power source 15 is provided at one end of the main box 1, and a main air inlet 11 is provided at the bottom of the main box 1. The main air inlet 11 is connected to the inside of the detection cylinder. One end of the main air inlet 11 is opened in the fixed cylinder 2, and an outlet hole for exhausting gas is opened in the rotating cylinder 3.

[0025] An auxiliary air inlet duct 12 is provided above the main box 1 , and an opening connected to the main air inlet duct 11 is provided at one end of the auxiliary air inlet duct 12 .

[0026] The gas leak detector has two working modes: 1. detecting whether there is leaked gas in the external air; 2. detecting whether there is leakage in the pipeline.

[0027] The first method: detecting whether there is leaked gas in the external air. The principle is as follows: a display is provided on the front side of the main box 1, and an operation button is provided below the display. The operation button is used to select and start the air intake fan 13 located inside the main air intake duct 11. At this time, the external gas will enter the detection cylinder through the main air intake duct 11. According to the Venturi effect, when the main air intake duct 11 intakes air into the detection cylinder, it will also drive the gas of the auxiliary air intake duct 12 to enter the detection cylinder. The air intake at the upper and lower ends at the same time can increase the measurement range, and the measurement efficiency is higher and the speed is faster.

[0028] In this detection mode, the rotating cylinder 3 is kept in a closed state, and sealing plates 6 are installed at both the upper and lower ends of the detection cylinder. The gas entering the detection cylinder is detected by the gas detection sensor 7 installed on the inner side of the rotating cylinder 3 and discharged through the air outlet 32. The detection result is displayed on the display.

[0029] During the working process, a filter screen 14 is provided at a section outside the main air inlet 11 and the auxiliary air inlet 12 to prevent debris from entering the detection cylinder.

[0030] The second method: to detect whether the pipeline is leaking. The principle is as follows: first, stop the rotation of the intake fan 13 through the control button on the front side of the main box 1. A protruding raised handle 31 is provided at one end of the rotating cylinder 3. The rotating cylinder 3 is pulled open by the raised handle 31, and then the sealing plates 6 at the upper and lower ends of the detection cylinder are removed. Then, the detection cylinder is clamped to the periphery of the pipeline and the rotating cylinder 3 is closed. After closing the rotating cylinder 3, the rubber pads 4 at the upper and lower ends of the fixed cylinder 2 and the rotating cylinder 3 and located in the inner semicircular structure are in contact with the outside of the pipeline to maintain the seal; the opening and closing part of the fixed cylinder 2 and the rotating cylinder 3 is provided with a mutually attracted magnetic suction 5. Under the action of the magnetic suction 5, the fixed cylinder 2 and the rotating cylinder 3 are kept fixed, and the position of the rotating cylinder 3 can be manually grasped during measurement to keep it in a closed state in contact with the fixed cylinder 3.

[0031] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A gas leak detector, comprising a main box (1), characterized in that: A detection cylinder consisting of a fixed cylinder (2) and a rotating cylinder (3) is provided on one side of the main box (1); semicircular rubber pads (4) are provided at the upper and lower ends of the fixed cylinder (2) and the rotating cylinder (3); and a gas detection sensor (7) is installed on the inner side of the fixed cylinder (2); A power source (15) is provided at one end of the main box (1), a main air inlet duct (11) is provided at the bottom of the main box (1), one end of the main air inlet duct (11) is exposed from the fixed cylinder (2), an outlet hole (32) for exhausting gas is provided in the rotating cylinder (3), a secondary air inlet duct (12) is provided above the main box (1), and an opening connected to the main air inlet duct (11) is provided at one end of the secondary air inlet duct (12).

2. A gas leak detector as claimed in claim 1, characterized in that: Sealing plates (6) are provided at both upper and lower ends of the detection cylinder and are clamped between the fixed cylinder (2) and the rotating cylinder (3).

3. A gas leak detector as claimed in claim 1, characterized in that: The fixed cylinder (2) is fixedly connected to the main box (1), while the rotating cylinder (3) is movably connected to the fixed cylinder (2). The rotating cylinder (3) can rotate outwards with the connection point with the fixed cylinder (2) as the center of the circle.

4. A gas leak detector as claimed in claim 1, characterized in that: A protruding raised handle (31) is provided at one end of the rotating cylinder (3), and a mutually attracting magnetic attraction (5) is provided at the opening and closing portion of the fixed cylinder (2) and the rotating cylinder (3).

5. A gas leak detector as claimed in claim 1, characterized in that: An air intake fan (13) is provided inside the main air intake duct (11).

6. A gas leak detector as claimed in claim 5, characterized in that: Filter screens (14) are provided at the outer ends of the main air inlet duct (11) and the auxiliary air inlet duct (12).

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