Portable self-calibration tetrahydrothiophene detection device

Abstract

The utility model discloses a portable self-calibration thiophane detection device which comprises an air suction cylinder, a piston is connected to the inner wall of the air suction cylinder in a sliding mode, one end of the piston is connected with a driving mechanism, air inlets are formed in the two sides of the top end of the air suction cylinder, air outlets are formed in the two sides of the bottom end of the air suction cylinder, and the air outlets are communicated with the air suction cylinder. Relates to the technical field of thiophane detection, by arranging a detection box and gradually pumping air into the detection box through an air pumping cylinder and a driving mechanism, the air pressure in the detection box can be larger than the external air pressure, and if the concentration of thiophane in the air is small, the content of thiophane in the detection box can also be increased; the two air inlets are formed in the top end of the air suction barrel, and the two air outlets are formed in the bottom of the air suction barrel, so that air can be injected into the detection box when the piston moves left and right by controlling the electromagnetic valves on the two air inlets and the two air outlets, the air suction efficiency is improved, and the detection efficiency is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of tetrahydrothiophene detection, in particular to a portable self-calibration tetrahydrothiophene detection device. Background Art

[0002] Since the gas is odorless, its leakage is not easy to detect. Tetrahydrothiophene is injected into the gas as an odor leak marker gas to achieve a warning effect. Common tetrahydrothiophene detectors in the industry mostly use imported electrochemical sensors.

[0003] The current tetrahydrothiophene detection device mainly uses an air pump to draw air into the detection room, so that the air passes through the tetrahydrothiophene sensor installed in the detection room, thereby detecting whether the air contains tetrahydrothiophene. The air passing through the tetrahydrothiophene sensor is directly discharged. Therefore, the air pressure of the air entering the detection room is roughly the same as the external air pressure. Therefore, if the concentration of tetrahydrothiophene in the air is very low, the concentration of tetrahydrothiophene in the air entering the detection room is also very low, so it is not easy to detect, which leads to a deviation in the detection sensitivity. Utility Model Content

[0004] In view of the problems existing in the existing portable self-calibration tetrahydrothiophene detection device, the utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a portable self-calibration tetrahydrothiophene detection device, which solves the problem of the current tetrahydrothiophene detection device, which mainly uses an air pump to draw air into the detection room, so that the air passes through the tetrahydrothiophene sensor arranged in the detection room, thereby detecting whether the air contains tetrahydrothiophene, and the air passing through the tetrahydrothiophene sensor is directly discharged. Therefore, the air pressure of the air entering the detection room is roughly the same as the external air pressure. Therefore, if the concentration of tetrahydrothiophene in the air is very low, the concentration of tetrahydrothiophene in the air entering the detection room is also very low, so it is not easy to detect, thereby causing the problem of detection sensitivity deviation.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A portable self-calibration tetrahydrothiophene detection device comprises a vacuum pump, the inner wall of which is slidably connected to a piston, one end of which is connected to a driving mechanism, air inlets are provided on both sides of the top end of the vacuum pump, and exhaust ports are provided on both sides of the bottom end of the vacuum pump, and the two exhaust ports are connected to a detection component through an air guide tube group.

[0008] As a preferred embodiment of the portable self-calibration tetrahydrothiophene detection device described in the utility model, wherein: a first air inlet and a second air inlet are respectively provided on both sides of the top of the vacuum cylinder, and a solenoid valve is installed on the first air inlet and the second air inlet;

[0009] A first exhaust port and a second exhaust port are respectively provided at both sides of the bottom end of the vacuum cylinder, and solenoid valves are installed on the first exhaust port and the second exhaust port.

[0010] As a preferred solution of a portable self-calibration tetrahydrothiophene detection device described in the utility model, the driving mechanism includes a piston rod fixedly connected to a piston, the end of the piston rod is detachably connected to a driving rod, and an electric push rod is installed between the driving rod and the vacuum cylinder.

[0011] As a preferred solution of the portable self-calibration tetrahydrothiophene detection device described in the utility model, wherein: a first support connection seat is fixedly installed on the driving rod, one end of the electric push rod is inserted into the first support connection seat, and the first support connection seat and the electric push rod are fixed by bolts;

[0012] A second supporting connection seat is fixedly mounted on the vacuum cylinder, one end of the electric push rod is inserted into the second supporting connection seat, and the second supporting connection seat and the electric push rod are fixed by bolts.

[0013] As a preferred solution of a portable self-calibration tetrahydrothiophene detection device described in the utility model, wherein: the first air inlet and the second air inlet are commonly connected to a U-shaped pipe, the top of the U-shaped pipe is fixedly connected to an air inlet pipe, and the top of the air inlet pipe is fixedly connected to an air collecting hood.

[0014] As a preferred solution of a portable self-calibration tetrahydrothiophene detection device described in the utility model, wherein: the first exhaust port and the second exhaust port are respectively connected to air ducts, the two air ducts are commonly connected to a three-way pipe, the interface of the three-way pipe is connected to a gas pipe, the detection component includes a detection box fixedly connected to the gas pipe, and a tetrahydrothiophene sensor is installed in the detection box.

[0015] As a preferred solution of the portable self-calibration tetrahydrothiophene detection device described in the utility model, wherein: an air vent is opened on the detection box, and an electromagnetic valve is installed on the air vent.

[0016] As a preferred solution of the portable self-calibration tetrahydrothiophene detection device described in the utility model, wherein: an air vent is opened on the detection box, and a pressure relief valve is installed on the air vent.

[0017] Compared with existing technologies:

[0018] By setting up a detection box, and gradually drawing air into the detection box through a vacuum pump and a driving mechanism, the air pressure in the detection box can be made greater than the external air pressure. Therefore, if the concentration of tetrahydrothiophene in the air is low, the content of tetrahydrothiophene in the detection box can be increased, thereby enhancing the sensitivity of the detection.

[0019] By opening two air inlets at the top of the vacuum cylinder and two exhaust ports at the bottom of the vacuum cylinder, the solenoid valves on the two air inlets and the two exhaust ports can be controlled so that air can be injected into the detection box when the piston moves left and right, thereby improving the air extraction efficiency and accelerating the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure provided for Example 1 of the utility model;

[0021] Figure 2 Provided for the utility model embodiment 1 Figure 1 A partial enlarged view of

[0022] Figure 3 A schematic diagram of the structure provided for Embodiment 2 of the present utility model;

[0023] Figure 4 This is an enlarged view of the detection box provided in Example 2 of the utility model.

[0024] In the figure: vacuum cylinder 1, second support column 2, bottom support plate 3, detection box 4, solenoid valve 41, pressure relief valve 42, cover 43, air supply pipe 5, three-way pipe 6, first exhaust port 7, second exhaust port 8, second air inlet 9, first air inlet 10, U-shaped pipe 11, air inlet pipe 12, air collecting hood 13, piston rod 15, piston 151, electric push rod 16, first support column 17, drive rod 18. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the implementation methods of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Embodiment 1:

[0027] The utility model provides a portable self-calibration tetrahydrothiophene detection device, please refer to Figure 1-2, including a vacuum cylinder 1, the bottom and side walls of the vacuum cylinder 1 are fixedly connected to the first support column 17 and the second support column 2, the bottom ends of the first support column 17 and the second support column 2 are fixedly connected to the bottom support plate 3, the bottom of the bottom support plate 3 is installed with a universal wheel, the inner wall of the vacuum cylinder 1 is slidably connected with a piston 151, the cavity part of the vacuum cylinder 1 on the left side of the piston 151 is called the left cavity, and the cavity part of the vacuum cylinder 1 on the right side of the piston 151 is called the right cavity, one end of the piston 151 is connected to a driving mechanism, air inlets are opened on both sides of the top end of the vacuum cylinder 1, and exhaust ports are opened on both sides of the bottom end of the vacuum cylinder 1, and the two exhaust ports are connected to the detection component through an air guide tube group.

[0028] A first air inlet 10 and a second air inlet 9 are respectively provided on both sides of the top of the vacuum cylinder 1, and solenoid valves are installed on the first air inlet 10 and the second air inlet 9. The first air inlet 10 and the second air inlet 9 are commonly connected to a U-shaped pipe 11, and an air inlet pipe 12 is fixedly connected to the top of the U-shaped pipe 11, and an air collecting hood 13 is fixedly connected to the top of the air inlet pipe 12;

[0029] A first exhaust port 7 and a second exhaust port 8 are respectively provided at both sides of the bottom end of the vacuum cylinder 1 , and solenoid valves are installed on the first exhaust port 7 and the second exhaust port 8 .

[0030] The driving mechanism includes a piston rod 15 fixedly connected to a piston 151, and the end of the piston rod 15 is detachably connected to a driving rod 18. An electric push rod 16 is commonly installed between the driving rod 18 and the vacuum cylinder 1. Specifically, a first supporting connection seat is fixedly installed on the driving rod 18, one end of the electric push rod 16 is inserted into the first supporting connection seat, and the first supporting connection seat and the electric push rod 16 are fixed by bolts; a second supporting connection seat is fixedly installed on the vacuum cylinder 1, one end of the electric push rod 16 is inserted into the second supporting connection seat, and the second supporting connection seat and the electric push rod 16 are fixed by bolts; the piston rod 15 is driven to move left and right by the extension and retraction of the electric push rod 16, thereby realizing the left and right movement of the piston 151.

[0031] The first exhaust port 7 and the second exhaust port 8 are respectively connected to air guide pipes, and the two air guide pipes are commonly connected to a three-way pipe 6. The interface of the three-way pipe 6 is connected to a gas supply pipe 5. The detection component includes a detection box 4 fixedly connected to the gas supply pipe 5, a tetrahydrothiophene sensor is installed in the detection box 4, the top end of the detection box 4 is covered with a cover 43, and an air release port is opened on the detection box 4, and an electromagnetic valve 41 is installed on the air release port.

[0032] When used specifically:

[0033] The solenoid valve on the first air inlet 10 is opened, the solenoid valve on the second air inlet 9 is closed, the solenoid valve on the second air outlet 8 is opened, and the solenoid valve on the first air outlet 7 is closed. The electric push rod 16 contracts and drives the piston 151 to move rightward, thereby pressing the air in the right cavity into the detection box 4. At the same time, the outside air enters the left cavity through the first air inlet 10.

[0034] When the piston 151 moves to the far right, the solenoid valve on the first air inlet 10 is closed, the solenoid valve on the second air inlet 9 is opened, the solenoid valve on the second exhaust port 8 is closed, and the solenoid valve on the first exhaust port 7 is opened. The electric push rod 16 extends and drives the piston 151 to move to the left, thereby pressing the air in the left cavity into the detection box 4. At the same time, the outside air enters the right cavity through the second air inlet 9.

[0035] When air enters the detection box 4, as the air in the detection box 4 gradually increases, the air pressure becomes greater than the atmospheric pressure. At this time, if the air contains tetrahydrothiophene, the content of tetrahydrothiophene in the detection box 4 will increase, so that the tetrahydrothiophene sensor can more sensitively detect whether tetrahydrothiophene is contained.

[0036] Embodiment 2:

[0037] See attached Figure 3-4 , which is different from the embodiment 1, is that an air release port is provided on the detection box 4, and a pressure relief valve 42 is installed on the air release port. At this time, the air sucked into the detection box 4 gradually increases, and when the air pressure is too high, the pressure relief valve 42 opens to release air.

[0038] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A portable self-calibration tetrahydrothiophene detection device, comprising a vacuum cylinder (1), the inner wall of the vacuum cylinder (1) being slidably connected to a piston (151), one end of the piston (151) being connected to a driving mechanism, characterized in that: Air inlets are provided on both sides of the top end of the air pump (1), and air outlets are provided on both sides of the bottom end of the air pump (1), and the two air outlets are connected to the detection component via an air guide tube group.

2. A portable self-calibration tetrahydrothiophene detection device according to claim 1, characterized in that: A first air inlet (10) and a second air inlet (9) are respectively provided on both sides of the top end of the vacuum cylinder (1), and solenoid valves are installed on both the first air inlet (10) and the second air inlet (9); A first exhaust port (7) and a second exhaust port (8) are respectively provided on both sides of the bottom end of the vacuum cylinder (1), and solenoid valves are installed on both the first exhaust port (7) and the second exhaust port (8).

3. A portable self-calibration tetrahydrothiophene detection device according to claim 1, characterized in that: The driving mechanism comprises a piston rod (15) fixedly connected to a piston (151); the end of the piston rod (15) is detachably connected to a driving rod (18); an electric push rod (16) is installed between the driving rod (18) and the vacuum cylinder (1).

4. A portable self-calibration tetrahydrothiophene detection device according to claim 3, characterized in that: A first support connection seat is fixedly mounted on the driving rod (18), one end of the electric push rod (16) is inserted into the first support connection seat, and the first support connection seat and the electric push rod (16) are fixed by bolts; A second support connection seat is fixedly mounted on the vacuum cylinder (1), one end of the electric push rod (16) is inserted into the second support connection seat, and the second support connection seat and the electric push rod (16) are fixed by bolts.

5. A portable self-calibration tetrahydrothiophene detection device according to claim 2, characterized in that: The first air inlet (10) and the second air inlet (9) are commonly connected to a U-shaped pipe (11), the top end of the U-shaped pipe (11) is fixedly connected to an air inlet pipe (12), and the top end of the air inlet pipe (12) is fixedly connected to an air collecting hood (13).

6. A portable self-calibration tetrahydrothiophene detection device according to claim 2, characterized in that: The first exhaust port (7) and the second exhaust port (8) are respectively connected to an air guide pipe, the two air guide pipes are commonly connected to a three-way pipe (6), the interface of the three-way pipe (6) is connected to an air supply pipe (5), the detection assembly comprises a detection box (4) fixedly connected to the air supply pipe (5), and a tetrahydrothiophene sensor is installed in the detection box (4).

7. A portable self-calibration tetrahydrothiophene detection device according to claim 6, characterized in that: The detection box (4) is provided with an air vent, and a solenoid valve (41) is installed on the air vent.

8. A portable self-calibration tetrahydrothiophene detection device according to claim 6, characterized in that: The detection box (4) is provided with an air release port, and a pressure relief valve (42) is installed on the air release port.

Images