Industrial gas detection device

Abstract

The utility model relates to the technical field of gas detection, in particular to an industrial gas detection device. According to the technical scheme, the device comprises a device base, a detection box is fixed to the upper end of the device base, a cover plate is fixed to the front end of the detection box through locking screws, a controller is installed on the rear side of the detection box, a detection air channel is formed in the detection box, detection air pipes are installed on the rear side of the upper end of the detection air channel, and the detection air pipes are linearly distributed; an electrochemical sensor, an infrared sensor and a semiconductor sensor which are used for detecting different gases are respectively mounted in the detection box, and the upper ends of the detection gas pipes extend out of the detection box. By means of sliding of the sliding block, gas can be guided into the detection gas pipe provided with the corresponding sensor for gas detection, special detection can be conducted on different kinds of gas, the detection accuracy is improved, before detection, gas in the detection gas channel can be emptied, the influence of residual gas on a detection structure is reduced, and the detection efficiency is improved. The detection accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, specifically to an industrial gas detection device. Background Technology

[0002] Industrial gases refer to gases used in industrial production, scientific research, medical treatment, food processing and other fields. They usually exist in gaseous, liquid or solid form, have specific physical and chemical properties, and are widely used in various industrial processes.

[0003] In the monitoring process, different gases often require different detection methods or sensors. For example, electrochemical sensors are suitable for detecting gases such as oxygen, carbon monoxide, hydrogen, and chlorine. They detect gases by generating an electric current through the reaction of the gas with chemical substances on the sensor electrodes. Infrared sensors are suitable for detecting gases such as carbon dioxide, methane, and carbon monoxide. They detect gases by measuring the ability of the gas to absorb infrared light of a specific wavelength. Semiconductor sensors are suitable for detecting combustible and toxic gases such as hydrogen, methane, and carbon monoxide. Their working principle is based on the change in resistance when the gas is adsorbed on the sensor surface. If these sensors are installed in the same gas channel, although multiple gases can be detected, the accuracy will decrease to some extent. In the process of detecting multiple gases at the same time, if there is residual gas in the detection channel, it will also affect the detection accuracy. Utility Model Content

[0004] The purpose of this invention is to provide an industrial gas detection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a device base, with a detection box fixed to the upper end of the base. A cover plate is fixed to the front end of the detection box by locking screws. A controller is installed on the rear side of the detection box. A detection gas channel is opened inside the detection box. A detection gas tube is installed on the rear side of the upper end of the detection gas channel. The detection gas tubes are linearly distributed and each contains an electrochemical sensor, an infrared sensor, and a semiconductor sensor for detecting different gases. The upper ends of the detection gas tubes all extend out of the detection box and are each fixed with a display instrument. A sliding block is slidably connected to the detection gas channel via a drive assembly. An opening groove is opened at the front end of the sliding block, and a mating groove is opened at the upper end of the sliding block. A suction pipe is fixed to the upper front side of the detection gas channel. A vacuum pump is fixed to the upper end of the detection box at a position corresponding to the suction pipe. A threaded connector is fixed to the front side of the cover plate at a position corresponding to the detection gas channel.

[0006] Preferably, a one-way valve is installed inside the extraction pipe.

[0007] Preferably, the drive assembly includes a drive groove and a drive block. The drive groove is located at the bottom of the monitoring airway. The drive block is slidably connected in the drive groove. A lead screw is rotatably connected in the drive groove. The lead screw passes through the drive block and is threadedly connected to the drive block. The upper end of the drive block is fixedly connected to a sliding block. A servo motor is fixed to the rear side wall of the drive groove. The output end of the servo motor is fixed to the lead screw.

[0008] Preferably, a sealing gasket is fixed to the outside of the sliding block, and the length of the sliding block is greater than the length of the drive groove.

[0009] Preferably, the front side of the detection box has an installation groove at the opening of the detection air passage, and a filter screen is installed in the installation groove.

[0010] Preferably, a positioning plate is fixed inside the mounting groove, an opening adapted to the mounting groove is opened on the rear side of the cover plate, and a top sleeve is fixed on the inner wall. The filter screen is located between the top sleeve and the positioning plate, and a sealing ring is fixed at the front end of the detection box and outside the mounting groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are: by using the sliding block to slide, the gas can be guided into the detection tube with the corresponding sensor for gas detection, which can be used for special detection of different gases, improving detection accuracy. In addition, before detection, the gas in the detection airway can be emptied to reduce the impact of residual gas on the detection structure and improve detection accuracy. Attached Figure Description

[0012] Figure 1 This is a front cross-sectional view of an industrial gas detection device according to the present invention.

[0013] Figure 2 This is a schematic diagram of the overall appearance structure of an industrial gas detection device according to the present invention;

[0014] Figure 3 This is a schematic diagram of the front structure of the detection box of an industrial gas detection device according to the present invention;

[0015] Figure 4 This is a schematic diagram of the external structure of the sliding block of an industrial gas detection device according to this utility model.

[0016] In the diagram: 1. Equipment base; 2. Testing box; 21. Testing air passage; 22. Testing air pipe; 23. Display instrument; 24. Mounting slot; 25. Positioning plate; 26. Sealing ring; 3. Cover plate; 31. Threaded connector; 32. Locking screw; 33. Top sleeve; 4. Sliding block; 41. Opening slot; 42. Connecting slot; 43. Sealing gasket; 5. Suction pipe; 51. One-way valve; 52. Vacuum pump; 6. Drive slot; 61. Lead screw; 62. Drive block; 63. Servo motor; 7. Filter screen. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This utility model provides a technical solution: it includes a device base 1, a detection box 2 fixed on the upper end of the device base 1, a cover plate 3 fixed to the front end of the detection box 2 by locking screws 32, a controller installed on the rear side of the detection box 2, a detection gas channel 21 opened inside the detection box 2, a detection gas pipe 22 installed on the rear side of the upper end of the detection gas channel 21, the detection gas pipes 22 are linearly distributed, and electrochemical sensors, infrared sensors and semiconductor sensors for different gas detection are respectively installed inside, the upper ends of the detection gas pipes 22 all extend out of the detection box 2, and a display instrument 23 is fixed on each of them, a sliding block 4 is slidably connected to the detection gas channel 21 by a drive assembly, the front end of the sliding block 4 has an opening groove 41, the upper end of the sliding block 4 has a docking groove 42, a suction pipe 5 is fixed to the upper front side of the detection gas channel 21, a vacuum pump 52 is fixed to the upper end of the detection box 2 and at a position corresponding to the suction pipe 5, a threaded connector 31 is fixed to the front side of the cover plate 3 and at a position corresponding to the detection gas channel 21, and a one-way valve 51 is installed inside the suction pipe 5.

[0019] The drive assembly includes a drive groove 6 and a drive block 62. The drive groove 6 is located at the bottom of the monitoring airway. The drive block 62 is slidably connected in the drive groove 6. A lead screw 61 is rotatably connected in the drive groove 6. The lead screw 61 passes through the drive block 62 and is threadedly connected to the drive block 62. The upper end of the drive block 62 is fixedly connected to a sliding block 4. A servo motor 63 is fixed to the rear side wall of the drive groove 6. The output end of the servo motor 63 is fixed to the lead screw 61. A sealing gasket 43 is fixed to the outside of the sliding block 4. The length of the sliding block 4 is greater than the length of the drive groove 6.

[0020] The front side of the test box 2 has an installation groove 24 at the opening of the test air passage 21. The installation groove 24 is equipped with a filter screen plate 7. A positioning plate 25 is fixed inside the installation groove 24. The rear side of the cover plate 3 has an opening that matches the installation groove 24, and a top sleeve 33 is fixed to the inner wall. The filter screen plate 7 is located between the top sleeve 33 and the positioning plate 25. A sealing ring 26 is fixed at the front end of the test box 2 and around the installation groove 24.

[0021] Working principle: First, connect the entire device to an external power source. Then, connect the sample gas pipeline using the threaded connector 31. The sample gas will enter through the detection gas channel 21, pass through the opening groove 41 and the docking groove 42 on the sliding block 4, and then enter the detection gas tube 22 for corresponding detection. During this process, the sliding block 4 can be aligned with the docking groove 42 at the upper end of the sliding block 4, allowing the gas to enter the detection gas tube 22 equipped with the specified sensor, thus achieving more accurate detection. The sliding block 4 can be moved by the servo motor 63 driving the lead screw 61 to rotate, which will cause the drive block 62 to slide, ultimately driving the sliding block 4 to slide. When performing gas conversion detection, after connecting the sample gas pipeline, the vacuum pump 52 can be used to extract the gas in the detection gas channel 21 to avoid the influence of residual gas on the detection structure and further improve accuracy. At the same time, before the gas enters the detection gas channel 21, it needs to pass through the filter screen 7 to filter the particles in the gas and reduce the influence of particulate impurities on the detection structure.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An industrial gas detection device, comprising a device base (1), characterized in that: A detection box (2) is fixed to the upper end of the equipment base (1). A cover plate (3) is fixed to the front end of the detection box (2) by a locking screw (32). A controller is installed on the rear side of the detection box (2). A detection gas channel (21) is opened inside the detection box (2). A detection gas tube (22) is installed on the rear side of the upper end of the detection gas channel (21). The detection gas tubes (22) are linearly distributed and are respectively equipped with electrochemical sensors, infrared sensors and semiconductor sensors for different gas detection. The upper ends of the detection gas tubes (22) all extend out of the detection box. (2), and all are fixed with display instruments (23). A sliding block (4) is slidably connected in the detection air passage (21) through a drive assembly. An opening groove (41) is opened at the front end of the sliding block (4). A docking groove (42) is opened at the upper end of the sliding block (4). A suction pipe (5) is fixed at the upper front side of the detection air passage (21). A vacuum pump (52) is fixed at the upper end of the detection box (2) and at the position corresponding to the suction pipe (5). A threaded connector (31) is fixed at the front side of the cover plate (3) and at the position corresponding to the detection air passage (21).

2. The industrial gas detection device according to claim 1, characterized in that: A one-way valve (51) is installed inside the air extraction pipe (5).

3. The industrial gas detection device according to claim 1, characterized in that: The drive assembly includes a drive groove (6) and a drive block (62). The drive groove (6) is located at the bottom of the monitoring airway. The drive block (62) is slidably connected in the drive groove (6). A lead screw (61) is rotatably connected in the drive groove (6). The lead screw (61) passes through the drive block (62) and is threadedly connected to the drive block (62). The upper end of the drive block (62) is fixedly connected to the sliding block (4). A servo motor (63) is fixed on the rear side wall of the drive groove (6). The output end of the servo motor (63) is fixed on the lead screw (61).

4. An industrial gas detection device according to claim 2, characterized in that: A sealing gasket (43) is fixed on the outside of the sliding block (4), and the length of the sliding block (4) is greater than the length of the drive groove (6).

5. An industrial gas detection device according to claim 1, characterized in that: The front side of the detection box (2) has an installation groove (24) at the opening of the detection air passage (21), and a filter screen plate (7) is installed in the installation groove (24).

6. An industrial gas detection device according to claim 5, characterized in that: A positioning plate (25) is fixed inside the mounting groove (24). An opening adapted to the mounting groove (24) is opened on the rear side of the cover plate (3), and a top sleeve (33) is fixed on the inner wall. The filter screen plate (7) is located between the top sleeve (33) and the positioning plate (25). A sealing ring (26) is fixed at the front end of the detection box (2) and outside the mounting groove (24).

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