Multi-gas detection device for tunnel

Abstract

The utility model relates to a multi-gas detection device for a tunnel, which belongs to the technical field of gas detection and comprises a shell, a first partition plate and a second partition plate are sequentially and fixedly mounted in the shell, and an inner cavity of the shell is sequentially divided into a gas inlet cavity, a detection cavity and a placement cavity by the first partition plate and the second partition plate. A gas inlet is formed in the side of the gas inlet cavity of the shell, a third partition plate perpendicular to the first partition plate is installed in the detection cavity, a through hole is formed in the middle of the first partition plate, the gas inlet cavity and the four cavities are communicated through the through hole, a gas detector is installed in each cavity, a plurality of gas passing holes are evenly formed in the periphery of the second partition plate, and a controller is installed in the placement cavity. A pipeline extends from one side of the shell containing cavity to the other side of the shell containing cavity, and a pipeline exhaust fan is installed in the pipeline. Different types of gas detectors are used for detecting different gases at the same time, so that the detection time is shortened, the health and safety of detection personnel are ensured, and meanwhile, the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, in particular to a multi-gas detection device for tunnels. Background Art

[0002] With the development and construction of highways, tunnels account for an increasingly large proportion of construction. Tunnels are limited spaces with poor ventilation, and toxic and harmful gases are easily produced during tunnel excavation. Therefore, it is necessary to detect the gas in the tunnel during tunnel construction to ensure the personal safety of construction workers.

[0003] Existing gas detection devices generally detect a single gas. When multiple gases need to be detected, multiple different gas detection devices are required to detect them one by one, which will take a lot of time. If there are harmful gases in the tunnel, the long detection time will cause the testers to inhale a small amount of harmful gas. In addition, multiple detection devices are taken out for testing in turn and then packed, resulting in low detection efficiency. Utility Model Content

[0004] In view of the above problems in the prior art, the utility model provides a multi-gas detection device for tunnels, which is achieved through the following technical solutions:

[0005] A multi-gas detection device for a tunnel comprises a shell, in which a first partition and a second partition are fixedly installed in sequence, and the inner cavity of the shell is divided into an air intake chamber, a detection chamber and an accommodation chamber in sequence by the first partition and the second partition. An air inlet is provided on the air intake chamber side of the shell, and a third partition is installed in the detection chamber perpendicular to the first partition. The third partition is arranged in a cross shape and divides the detection chamber into four chambers. A through hole is provided in the middle of the first partition, and the through hole connects the air intake chamber with the four chambers. A gas detector for detecting different types of harmful gases is installed in each of the chambers. A plurality of air holes are evenly provided around the second partition, and a controller is installed in the accommodation chamber. A pipe extends from one side of the accommodation chamber of the shell to the other side, and a pipe exhaust fan is installed in the pipe.

[0006] The utility model is further configured as follows: each of the gas detectors is provided with a display screen, and the side wall of the shell located at the detection cavity is configured as a transparent shell.

[0007] The utility model is further configured as follows: a first filter screen is clamped at the air inlet, a water-absorbing filter paper is clamped at the through hole, and a second filter screen is clamped at a side of the pipe away from the placement cavity.

[0008] The utility model is further configured as follows: an electric telescopic rod is fixedly installed at the bottom of the shell, the bottom of the electric telescopic rod is fixedly connected to a bottom plate, self-locking universal wheels are installed at the four corners of the bottom of the bottom plate, and a handle is installed on one side of the top of the bottom plate.

[0009] The utility model is further configured as follows: a first cover body is clamped on the air inlet side of the shell, and a second cover body is clamped on the side of the pipeline away from the shell.

[0010] In summary, the beneficial technical effects of the utility model are:

[0011] By using multiple different types of gas detectors to detect different gases at the same time, the detection time can be reduced, the health and safety of the detection personnel can be ensured, and the detection efficiency can be improved; the gas concentration can be determined by observing the specific values ​​on the display screen through the transparent shell around the detection chamber; the external particulate impurities are filtered out through the first filter and the second filter, and the moisture in the air is absorbed by the absorbent filter paper to avoid damage to the internal structure of the shell; the gas concentration at different heights can be detected by the electric telescopic rod; when the device is not in use, the first cover and the second cover are used to seal the internal structure of the device to prevent dust and moisture, thereby extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram for showing the overall structure of the utility model.

[0013] Figure 2 It is a schematic diagram used to show the internal structure of the detection chamber.

[0014] Figure numerals: 1, shell; 101, first partition; 102, second partition; 103, air hole; 2, air inlet chamber; 3, detection chamber; 301, chamber; 4, placement chamber; 5, air inlet; 6, third partition; 7, through hole; 8, gas detector; 801, display screen; 9, controller; 10, pipeline; 11, pipeline exhaust fan; 12, first filter; 13, water-absorbing filter paper; 14, second filter; 15, electric telescopic rod; 16, bottom plate; 17, universal wheel; 18, handle; 19, first cover; 20, second cover; 21, battery. DETAILED DESCRIPTION

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0016] Example

[0017] like Figure 1-2As shown, a multi-gas detection device for a tunnel disclosed by the utility model comprises a shell 1, in which a first partition plate 101 and a second partition plate 102 are fixedly installed in sequence, and the inner cavity of the shell 1 is divided into an air intake chamber 2, a detection chamber 3 and a placement chamber 4 in sequence in the horizontal direction by the first partition plate 101 and the second partition plate 102, an air inlet 5 is provided on the air intake chamber 2 side of the shell 1, a third partition plate 6 is installed in the detection chamber 3 perpendicular to the first partition plate 101, and the two sides of the third partition plate 6 are respectively fixedly connected to the first partition plate 101 and the second partition plate 102, the third partition plate 6 is arranged in a cross shape and divides the detection chamber 3 into four chambers 301, a through hole 7 is provided in the middle of the first partition plate 101, and the through hole 7 connects the air intake chamber 2 with the four chambers 301, and the through hole 7 only covers each chamber The four corners of the chamber 301 are close to each other, and each of the chambers 301 is installed with a gas detector 8 for detecting different types of harmful gases. The gas detector 8 is any four of a carbon dioxide gas detector, a methane gas detector, a carbon monoxide gas detector, a chlorine gas detector, and an ammonia gas detector, but is not limited to these gas detectors 8. A plurality of air holes 103 are evenly opened around the second partition 102. The through holes 7 in each of the chambers 301 are diagonally arranged with the air holes 103 to ensure that the gas entering the chamber 301 can bypass the gas detector 8 in the chamber 301, allowing the gas detector 8 to perform detection. A controller 9 is installed in the placement chamber 4, and a pipe 10 extends from one side of the placement chamber 4 of the shell 1 to the other side, and a duct exhaust fan 11 is installed in the pipe 10.

[0018] Each of the gas detectors 8 is provided with a display screen 801 . The side walls of the shell 1 located at the detection chamber 3 are configured as a transparent shell. The display screen 801 is arranged toward the two side walls of the shell 1 to ensure that data can be observed on both sides outside the shell 1 .

[0019] The air inlet 5 is clamped with a first filter screen 12, the through hole 7 is clamped with a water-absorbing filter paper 13, and the side of the pipe 10 away from the placement chamber 4 is clamped with a second filter screen 14, all of which can be disassembled for replacement or cleaning.

[0020] An electric telescopic rod 15 is fixedly installed at the bottom of the housing 1, and a bottom plate 16 is fixedly connected to the bottom of the electric telescopic rod 15. Self-locking universal wheels 17 are installed at the four corners of the bottom of the bottom plate 16, and a handle 18 is installed on one side of the top of the bottom plate 16.

[0021] A first cover 19 is clamped on the air inlet 5 side of the shell 1 , and a second cover 20 is clamped on the side of the pipe 10 away from the shell 1 .

[0022] A battery 21 is installed on one side of the top of the bottom plate 16 , and the gas detector 8 , the display screen 801 , the controller 9 and the duct exhaust fan 11 are all electrically connected to the battery 21 .

[0023] The specific implementation method of this example is as follows: push the handle 18 to drive the device to move into the tunnel, adjust the height of the shell 1 by the electric telescopic rod 15, remove the first cover 19 and the second cover 20, open the duct exhaust fan 11 to draw the gas in the tunnel into the shell 1, and the gas enters the four chambers 301 of the detection chamber 3 through the air inlet 5 and the through hole 7. Under the action of the first filter 12 and the water-absorbing filter paper 13, the gas is dusted and dehumidified. The gas entering the chamber 301 is detected by the gas detector 8, and the data is displayed on the display screen 801. Then the gas is discharged from the shell 1 from the pipe 10 through the air hole 103; the first filter 12, the second filter 14 and the water-absorbing filter paper 13 can be disassembled for replacement or cleaning.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A multi-gas detection device for a tunnel, comprising a housing (1), characterized in that: A first partition plate (101) and a second partition plate (102) are fixedly installed in sequence in the shell (1); the first partition plate (101) and the second partition plate (102) divide the inner cavity of the shell (1) into an air inlet cavity (2), a detection cavity (3) and a placement cavity (4) in sequence; an air inlet port (5) is provided on the air inlet cavity (2) side of the shell (1); a third partition plate (6) is installed in the detection cavity (3) perpendicular to the first partition plate (101); the third partition plate (6) is arranged in a cross shape and divides the detection cavity (3) into four chambers (301); A through hole (7) is provided in the middle of the first partition (101), and the through hole (7) connects the air inlet cavity (2) and the four chambers (301). A gas detector (8) for detecting different types of harmful gases is installed in each of the chambers (301). A plurality of air holes (103) are evenly provided around the second partition (102). A controller (9) is installed in the placement cavity (4). A pipe (10) extends from one side of the placement cavity (4) of the housing (1) to the other side, and a pipe exhaust fan (11) is installed in the pipe (10).

2. A multi-gas detection device for tunnel according to claim 1, characterized in that: Each of the gas detectors (8) is provided with a display screen (801), and the side wall of the shell (1) located at the detection chamber (3) is configured as a transparent shell.

3. A multi-gas detection device for tunnel according to claim 1, characterized in that: A first filter screen (12) is clamped at the air inlet (5), a water-absorbing filter paper (13) is clamped at the through hole (7), and a second filter screen (14) is clamped at the side of the pipe (10) away from the placement chamber (4).

4. A multi-gas detection device for tunnel according to claim 1, characterized in that: An electric telescopic rod (15) is fixedly mounted on the bottom of the housing (1), and a bottom plate (16) is fixedly connected to the bottom of the electric telescopic rod (15). Self-locking universal wheels (17) are mounted at four corners of the bottom of the bottom plate (16), and a handle (18) is mounted on one side of the top of the bottom plate (16).

5. The multi-gas detection device for tunnel according to claim 1, characterized in that: A first cover body (19) is clamped on the air inlet (5) side of the shell (1), and a second cover body (20) is clamped on the side of the pipe (10) away from the shell (1).

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