Gas source concentration detection sampling device

Abstract

The utility model relates to the technical field of gas source concentration detection, in particular to a gas source concentration detection sampling device which comprises a U-shaped pipe, one end of the U-shaped pipe is fixedly connected with a first regulating valve, the upper end of the first regulating valve is fixedly connected with a spiral pipe, and one end, far away from the first regulating valve, of the spiral pipe is fixedly connected with a pressure gauge; the sampling mechanism comprises a second adjusting valve fixedly connected to the other end of the U-shaped pipe, the upper end of the second adjusting valve is fixedly connected with an L-shaped pipe, the side wall, away from the second adjusting valve, of the L-shaped pipe is rotationally connected with a first nut in a sealed mode, and the inner wall of the first nut is in threaded connection with a connecting pipe. Gas in the main pipeline can enter the external four-in-one gas detector through the U-shaped pipe, the second regulating valve, the L-shaped pipe and the connecting pipe, so that the concentration of the gas can be detected, safe sampling of the gas is realized, and a pressure gauge does not need to be disassembled.

Description

Technical Field

[0001] The utility model relates to the technical field of gas source concentration detection, in particular to a gas source concentration detection sampling device. Background Art

[0002] In order to ensure the gas quality during subsequent use, it is necessary to test its concentration. Currently, the gas source concentration is tested and sampled before unloading. Usually, when performing this work, the pressure gauge on the BOG pipeline in the unloading booster area is removed for testing and sampling.

[0003] However, since the pressure gauge interface does not match the four-in-one gas detector and the sampling bag interface and cannot be tightly connected, pressurized low-temperature gas is sprayed outward during work. If the operation is improper, there is a risk of frostbite to personnel, static electricity fire and other safety hazards. Moreover, the pressure gauge must be disassembled each time, which will cause damage to the pressure gauge and the connecting thread. It is extremely inconvenient to work and the efficiency is very low. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a gas source concentration detection sampling device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A gas source concentration detection sampling device, comprising:

[0007] A U-shaped tube, one end of which is fixedly connected to a first regulating valve, an upper end of which is fixedly connected to a spiral tube, and an end of which is away from the first regulating valve is fixedly connected to a pressure gauge;

[0008] The sampling mechanism includes a second regulating valve fixedly connected to the other end of the U-shaped tube, an L-shaped tube fixedly connected to the upper end of the second regulating valve, a first nut sealingly rotatably connected to the side wall of the L-shaped tube away from the second regulating valve, and a connecting tube threadedly connected to the inner wall of the first nut.

[0009] Preferably, a mounting tube is fixedly connected to the bottom of the U-shaped tube, and a second nut is sealingly and rotatably connected to the side wall of the mounting tube.

[0010] Preferably, one end of the connecting tube away from the first nut is connected to an external four-in-one gas detector.

[0011] The utility model has the following beneficial effects:

[0012] By setting up the sampling mechanism, the gas in the main pipeline will enter the four-in-one gas detector in the outside through the U-tube, the second regulating valve, the L-tube and the connecting pipe, so that the concentration of the gas can be detected, and safe sampling of the gas can be achieved without disassembling the pressure gauge, thereby avoiding the problem in the prior art that the pressure gauge interface does not match the four-in-one gas detector and the sampling bag interface, and cannot be tightly connected. When working, pressurized low-temperature gas is sprayed outward, and improper operation may easily lead to the risk of frostbite to personnel, static electricity fire and other safety hazards. In addition, the pressure gauge must be disassembled each time, which will cause damage to the pressure gauge and the connecting thread, which is extremely inconvenient during work and the efficiency is very low. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of a gas source concentration detection sampling device proposed by the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the rear view structure.

[0015] In the figure: 1. U-shaped tube; 2. first regulating valve; 3. spiral tube; 4. pressure gauge; 5. second regulating valve; 6. L-shaped tube; 7. first nut; 8. connecting tube; 9. mounting tube; 10. second nut. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] Reference Figure 1-2 A gas source concentration detection sampling device includes a U-shaped tube 1, one end of the U-shaped tube 1 is fixedly connected to a first regulating valve 2, the upper end of the first regulating valve 2 is fixedly connected to a spiral tube 3, and the end of the spiral tube 3 away from the first regulating valve 2 is fixedly connected to a pressure gauge 4, which can display the gas pressure. At this time, the first regulating valve 2 is in a normally open state.

[0018] The bottom of the U-shaped tube 1 is fixedly connected with a mounting tube 9, and the side wall of the mounting tube 9 is sealingly and rotatably connected with a second nut 10. Furthermore, the second nut 10 is connected to the connecting port on the external main pipeline. At this time, the gas in the external main pipeline will enter the U-shaped tube 1.

[0019] The sampling mechanism includes a second regulating valve 5 fixedly connected to the other end of the U-shaped tube 1, an L-shaped tube 6 fixedly connected to the upper end of the second regulating valve 5, a first nut 7 is rotatably connected to the side wall of the L-shaped tube 6 away from the second regulating valve 5, a connecting tube 8 is threadedly connected to the inner wall of the first nut 7, and one end of the connecting tube 8 away from the first nut 7 is connected to the external four-in-one gas detector.

[0020] Furthermore, when sampling is required, the connecting pipe 8 is connected to the external four-in-one gas detector, and then the second regulating valve 5 is turned to open, and the gas in the main pipeline will enter the external four-in-one gas detector through the U-tube 1, the second regulating valve 5, the L-tube 6 and the connecting pipe 8, so that the concentration of the gas can be detected, and safe sampling of the gas can be achieved without disassembling the pressure gauge 4, avoiding the problem in the prior art that the pressure gauge interface does not match the four-in-one gas detector and the sampling bag interface, and cannot be tightly connected, and pressurized low-temperature gas is sprayed out when working. If the operation is improper, it is easy to cause frostbite to personnel, static electricity fire and other safety hazards. In addition, the pressure gauge must be disassembled every time, which will cause damage to the pressure gauge and the connecting thread, which is extremely inconvenient during work and the efficiency is very low.

[0021] In this solution, the second nut 10 is connected to the connection port on the external main pipeline, which is the prior art. At this time, the gas in the external main pipeline will enter the U-shaped tube 1, and the first regulating valve 2 is in a normally open state, and the pressure gauge 4 can display the gas pressure;

[0022] When detecting the gas concentration, first connect the connecting pipe 8 with the external four-in-one gas detector, then turn the second regulating valve 5 to open, and then the gas in the main pipeline will enter the external four-in-one gas detector through the U-tube 1, the second regulating valve 5, the L-tube 6 and the connecting pipe 8, so that the gas concentration can be detected and safe sampling of the gas can be achieved without disassembling the pressure gauge 4, avoiding the problem in the prior art that the pressure gauge interface does not match the four-in-one gas detector and the sampling bag interface, and cannot be tightly connected, and pressurized low-temperature gas is sprayed out when working. If the operation is improper, it is easy to cause frostbite to personnel, static electricity fire and other safety hazards. In addition, the pressure gauge must be disassembled every time, which will cause damage to the pressure gauge and the connecting thread, which is extremely inconvenient during work and the efficiency is very low.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gas source concentration detection sampling device, characterized in that: include: A U-shaped tube (1), one end of the U-shaped tube (1) being fixedly connected to a first regulating valve (2), the upper end of the first regulating valve (2) being fixedly connected to a spiral tube (3), and the end of the spiral tube (3) away from the first regulating valve (2) being fixedly connected to a pressure gauge (4); A sampling mechanism, the sampling mechanism comprising a second regulating valve (5) fixedly connected to the other end of the U-shaped tube (1), the upper end of the second regulating valve (5) being fixedly connected to an L-shaped tube (6), the side wall of the L-shaped tube (6) away from the second regulating valve (5) being sealingly rotatably connected to a first nut (7), the inner wall of the first nut (7) being threadedly connected to a connecting tube (8).

2. A gas source concentration detection sampling device according to claim 1, characterized in that: The bottom of the U-shaped tube (1) is fixedly connected to a mounting tube (9), and the side wall of the mounting tube (9) is sealingly and rotatably connected to a second nut (10).

3. A gas source concentration detection sampling device according to claim 1, characterized in that: One end of the connecting pipe (8) away from the first nut (7) is connected to an external four-in-one gas detector.

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