CN219016080U

CN219016080U - Laser gas detection device

Info

Publication number: CN219016080U
Application number: CN202223556592.4U
Authority: CN
Inventors: 李国强; 马振江
Original assignee: Shandong Jiangsheng Petroleum Technology Co ltd
Current assignee: Shandong Jiangsheng Petroleum Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-12
Anticipated expiration: 2032-12-30

Abstract

The utility model relates to the technical field of gas detection, in particular to a laser gas detection device which comprises two groups of combined pipelines, a laser transmitter, a laser receiver and a controller, wherein the laser transmitter is connected with the laser transmitter; the two groups of combined pipelines are symmetrically arranged on two sides of the gas transmission pipeline, the two groups of combined pipelines are communicated with the inside of the gas transmission pipeline, each combined pipeline comprises a mounting pipe, a connecting pipe and a sealing cover, the mounting pipe and the sealing cover are respectively detachably arranged at two ends of the connecting pipe, and the mounting pipe is fixed on the gas transmission pipeline; the laser transmitter and the laser receiver are respectively arranged on the inner sides of the sealing covers on the two sides; the ball valve is arranged on the installation tube; the inner side of the connecting pipe is provided with a slide, and the connecting pipe is provided with a cleaning component; the cleaning component comprises a water storage shell, a mounting rod, a rubber scraping strip and a water absorbing sponge. The utility model can conveniently clean the slide, ensures that the area of the slide, through which the laser passes, is always clear, and ensures that the accuracy of the test data is higher.

Description

Laser gas detection device

Technical Field

The utility model relates to the technical field of gas detection, in particular to a laser gas detection device.

Background

The linear light beam combustible gas detector is a high-precision instrument designed by utilizing the principle that methane gas has an absorption effect on laser with specific wavelength (the principle of the laser spectrum absorption of a diode TDLAS can be coordinated), has excellent product performance and stable quality, and is widely applied to the fields of medium and high-oil conveying pipelines, medium and sea oil offshore platforms, LNG receiving wharfs, gas source station chemical libraries of gas companies, pump valve groups of chemical plants and the like.

In the prior art, the laser detection device generally comprises a control module, a laser emission unit and a laser receiving unit, wherein two ends of a gas transmission pipeline are communicated with the pipeline, a glass slide is arranged in the pipeline to isolate gas and allow laser to pass through, but if the inner side surface of the glass slide is polluted by gas, the cleaning operation is complicated.

Disclosure of Invention

The utility model aims at solving the technical problems in the background technology and provides a laser gas detection device.

The technical scheme of the utility model is as follows: a laser gas detection device comprises two groups of combined pipelines, a laser transmitter, a laser receiver and a controller; the two groups of combined pipelines are symmetrically arranged on two sides of the gas transmission pipeline, the two groups of combined pipelines are communicated with the inside of the gas transmission pipeline, each combined pipeline comprises a mounting pipe, a connecting pipe and a sealing cover, the mounting pipe and the sealing cover are respectively detachably arranged at two ends of the connecting pipe, and the mounting pipe is fixed on the gas transmission pipeline; the laser transmitter and the laser receiver are respectively arranged on the inner sides of the sealing covers on the two sides; the ball valve is arranged on the installation tube; the inner side of the connecting pipe is provided with a slide, and the connecting pipe is provided with a cleaning component; the cleaning component comprises a water storage shell, an installation rod, a rubber scraping strip and a water absorption sponge, wherein the installation rod is arranged on one side, adjacent to the ball valve, of the slide, the water absorption sponge and the rubber scraping strip are both fixed on the installation rod and are all in contact with the slide, a water storage cavity is formed in the installation rod, a plurality of water flowing holes communicated with the inner side of the water storage cavity are formed in the installation rod, two ends of the top of the water storage cavity are all communicated with a guide pipe, the water storage shell is arranged above the connecting pipe, the guide pipe movably penetrates through the upper end of the connecting pipe and is communicated with the inner side of the water storage shell, a spring A is sleeved on the guide pipe, a connecting rod is arranged inside the water storage shell, two ends of the connecting rod are both connected with sealing inserting rods, the bottom end of the connecting rod is vertically connected with a guide rod, the bottom end of the guide rod movably penetrates through the water storage shell and is connected with a compression rod, and a spring B is sleeved on the guide rod.

Preferably, the collecting shell is arranged below the connecting pipe and made of transparent materials, an internal thread connecting pipe is arranged on the collecting shell in a communicating mode, the bottom end of the connecting pipe is connected with a liquid discharge pipe, and the internal thread connecting pipe is in threaded connection with the bottom end of the liquid discharge pipe.

Preferably, the periphery of the mounting pipe is provided with a fixed ring, and the fixed ring is provided with a sealing ring A; the periphery of the liquid discharge pipe is provided with a sealing ring B.

Preferably, the controller is provided with a hoop.

Preferably, the inner side of the water storage shell is vertically connected with a sleeve, and the guide rod movably penetrates through the sleeve.

Preferably, the laser transmitter and the laser receiver are both electrically connected to the controller.

Preferably, the two sealing inserted bars vertically correspond to the two guide pipes one by one, and the sealing inserted bars are in clearance fit with the inner side holes of the guide pipes.

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial technical effects: the laser transmitter transmits laser with specific wavelength, the laser passes through the gas monitoring area and then is received by the laser receiver, if the detected characteristic gas exists in the gas area through which the laser passes, the laser is absorbed by the characteristic gas, the higher the concentration of the characteristic gas is, the larger the absorption amount is, the laser receiver monitors the change of the laser intensity and feeds the change back to the controller for processing, and finally the detection concentration is obtained; when the surface of slide receives the pollution, then can influence the accuracy of measured data, when cleaning the slide, the water storage casing is pressed down and the depression bar is upwards pulled, the depression bar drives sealed inserted bar and moves upward and take out from the pipe is inboard, cleaning fluid in the water storage casing flows into the water storage cavity through the pipe this moment, finally flow to the surface of slide through a plurality of flow holes, the in-process of removing the water storage casing has driven rubber and has scraped strip and water absorption sponge and removed, thereby can realize the clean work to the slide, guarantee that the region that laser passed on the slide remains clear throughout, make the accuracy of test data higher.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

FIG. 2 is a schematic diagram of the connection between a composite pipeline and a gas pipeline according to the present utility model.

Fig. 3 is a side cross-sectional view of a composite pipe according to the present utility model.

Fig. 4 is a schematic structural view of the connection relationship between the water storage housing and the mounting rod in the present utility model.

Reference numerals: 1. installing a pipe; 2. a ball valve; 3. a connecting pipe; 4. sealing cover; 5. a controller; 6. a gas line; 7. a ring hoop; 8. a laser emitter; 9. a water storage housing; 10. a collection housing; 11. a rubber scraping strip; 12. a water absorbing sponge; 13. a fixing ring; 14. a sealing ring A; 15. a conduit; 16. a spring A; 17. a compression bar; 18. a guide rod; 19. a spring B; 20. a connecting rod; 21. a sleeve; 22. a mounting rod; 221. a water flow hole; 222. a water storage cavity; 23. a liquid discharge pipe; 24. a sealing ring B; 25. an internal thread connecting pipe; 26. a laser receiver; 27. a slide; 28. and sealing the inserted link.

Detailed Description

Example 1

As shown in fig. 1-4, the laser gas detection device provided by the utility model comprises two groups of combined pipelines, a laser transmitter 8, a laser receiver 26 and a controller 5; the controller 5 is provided with a ring hoop 7; the two groups of combined pipelines are symmetrically arranged on two sides of the gas pipeline 6, the two groups of combined pipelines are communicated with the inside of the gas pipeline 6, each combined pipeline comprises a mounting pipe 1, a connecting pipe 3 and a sealing cover 4, the mounting pipe 1 and the sealing cover 4 are respectively and detachably arranged at two ends of the connecting pipe 3, and the mounting pipe 1 is fixed on the gas pipeline 6; the periphery of the installation tube 1 is provided with a fixed ring 13, and the fixed ring 13 is provided with a sealing ring A14; the laser transmitter 8 and the laser receiver 26 are respectively arranged on the inner sides of the sealing covers 4 at two sides, and the laser transmitter 8 and the laser receiver 26 are electrically connected with the controller 5; the ball valve 2 is arranged on the installation tube 1; a slide 27 is arranged on the inner side of the connecting pipe 3, and a cleaning component is arranged on the connecting pipe 3; the cleaning component comprises a water storage shell 9, a mounting rod 22, a rubber scraping strip 11 and a water absorbing sponge 12, wherein the mounting rod 22 is arranged on one side, adjacent to the ball valve 2, of a glass slide 27, the water absorbing sponge 12 and the rubber scraping strip 11 are fixed on the mounting rod 22 and are in contact with the glass slide 27, a water storage cavity 222 is formed in the mounting rod 22, a plurality of water flowing holes 221 communicated with the inner side of the water storage cavity 222 are formed in the mounting rod 22, guide pipes 15 are respectively arranged at two ends of the top of the water storage cavity 222 in a communicating mode, the water storage shell 9 is arranged above the connecting pipe 3, the guide pipes 15 movably penetrate through the upper end of the connecting pipe 3 and are communicated with the inner side of the water storage shell 9, a spring A16 is sleeved on the guide pipes 15, connecting rods 20 are arranged in the water storage shell 9, sealing inserted rods 28 are respectively connected to two ends of the connecting rods 20, two sealing inserted rods 28 are vertically correspond to the two guide pipes 15 one by one, the bottom ends of the connecting rods 20 are vertically connected with guide rods 18, the bottom ends of the guide rods 18 movably penetrate through the shell 9 and are connected with pressure rods 17, springs B19 are respectively sleeved on the guide rods 18, the inner sides of the guide rods 9 are vertically connected with the guide sleeves 21, and the water storage shell 9 can be movably penetrate through the bottom of the water storage shell 9.

The collecting shell 10 is arranged below the connecting pipe 3, the collecting shell 10 is made of transparent materials, an internal thread connecting pipe 25 is arranged on the collecting shell 10 in a communicating mode, a liquid discharge pipe 23 is connected to the bottom end of the connecting pipe 3, the internal thread connecting pipe 25 is in threaded connection with the bottom end of the liquid discharge pipe 23, and a sealing ring B24 is arranged on the periphery of the liquid discharge pipe 23.

The working principle of the utility model is as follows: the laser emitter 8 emits laser with specific wavelength, the laser passes through the gas monitoring area and then is received by the laser receiver 26, if the detected characteristic gas exists in the gas area through which the laser passes, the laser is absorbed by the characteristic gas, the higher the concentration of the characteristic gas is, the larger the absorption amount is, the laser receiver 26 monitors the change of the laser intensity and feeds back to the controller 5 for processing, and finally the detection concentration is obtained; when the surface of the glass slide 27 is polluted, the accuracy of measured data can be affected, when the glass slide 27 is cleaned, the water storage shell 9 is pressed downwards, the pressing rod 17 is pulled upwards, the pressing rod 17 drives the sealing insert rod 28 to move upwards to be pulled out of the inner side of the guide pipe 15, cleaning liquid in the water storage shell 9 flows into the water storage cavity 222 through the guide pipe 15 at the moment, finally flows to the surface of the glass slide 27 through the plurality of water flow holes 221, the rubber scraping strip 11 and the water absorption sponge 12 are driven to move in the process of moving the water storage shell 9, so that the cleaning work of the glass slide 27 can be realized, the laser passing area on the glass slide 27 is ensured to be always clear, and the accuracy of the measured data is higher.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. The laser gas detection device is characterized by comprising two groups of combined pipelines, a laser transmitter (8), a laser receiver (26) and a controller (5); the two groups of combined pipelines are symmetrically arranged on two sides of the gas transmission pipeline (6), the two groups of combined pipelines are communicated with the inside of the gas transmission pipeline (6), each combined pipeline comprises a mounting pipe (1), a connecting pipe (3) and a sealing cover (4), the mounting pipes (1) and the sealing covers (4) are respectively and detachably arranged at two ends of the connecting pipe (3), and the mounting pipes (1) are fixed on the gas transmission pipeline (6); the laser transmitter (8) and the laser receiver (26) are respectively arranged on the inner sides of the sealing covers (4) on the two sides; the ball valve (2) is arranged on the mounting pipe (1); a slide (27) is arranged on the inner side of the connecting pipe (3), and a cleaning component is arranged on the connecting pipe (3); the cleaning component comprises a water storage shell (9), a mounting rod (22), a rubber scraping strip (11) and a water absorption sponge (12), wherein the mounting rod (22) is arranged on one side, adjacent to a ball valve (2), of a glass slide (27), the water absorption sponge (12) and the rubber scraping strip (11) are all fixed on the mounting rod (22) and are all in contact with the glass slide (27), a water storage cavity (222) is formed in the mounting rod (22), a plurality of water flowing holes (221) communicated with the inner side of the water storage cavity (222) are formed in the mounting rod (22), guide pipes (15) are respectively arranged at the two ends of the top of the water storage cavity (222) in a communicating mode, the water storage shell (9) is arranged above the connecting pipe (3), the guide pipes (15) movably penetrate through the upper end of the connecting pipe (3) and are communicated with the inner side of the water storage shell (9), springs A (16) are arranged on the guide pipes (15) in a sleeved mode, connecting rods (20) are arranged in the inner portions of the water storage shell (9), sealing inserting rods (28) are connected to the two ends of the connecting rods (20), guide rods (18) are vertically connected to the bottom ends of the connecting rods (18), the bottom ends of the connecting rods (18) are movably connected with the guide rods (9) and the guide rods (17) are connected with the guide rods (17).

2. The laser gas detection device according to claim 1, wherein a collecting housing (10) is arranged below the connecting pipe (3), the collecting housing (10) is made of transparent materials, an internal thread connecting pipe (25) is arranged on the collecting housing (10) in a communicating manner, the bottom end of the connecting pipe (3) is connected with a liquid discharge pipe (23), and the internal thread connecting pipe (25) is in threaded connection with the bottom end of the liquid discharge pipe (23).

3. A laser gas detection device according to claim 2, characterized in that the outer circumference of the mounting tube (1) is provided with a fixing ring (13), and the fixing ring (13) is provided with a sealing ring a (14); a sealing ring B (24) is arranged on the periphery of the liquid discharge pipe (23).

4. A laser gas detection device according to claim 1, characterized in that the controller (5) is provided with a ring anchor (7).

5. A laser gas detection device according to claim 1, characterized in that the inner side of the water storage housing (9) is vertically connected with a sleeve (21), and the guide rod (18) is movably penetrating the sleeve (21).

6. A laser gas detection device according to claim 1, characterized in that the laser transmitter (8) and the laser receiver (26) are both electrically connected to the controller (5).

7. A laser gas detection device according to claim 1, characterized in that two sealing bars (28) are vertically associated with the two ducts (15), the sealing bars (28) being in clearance fit with the inner holes of the ducts (15).