A sampling device for chemical gas detection

Abstract

The utility model relates to gas sampling device field discloses a sampling device for chemical gas detection, including cylinder, cylinder left side fixedly connected with input pipe, input pipe outside fixedly connected with valve, input pipe inside slide connection has the conversion head, cylinder right side fixedly connected with output pipe, output pipe outside fixedly connected with pressure gauge, output pipe right -hand member is fixedly connected with the explosion -proof valve, input pipe outside installs fixed subassembly, input pipe inside installs the anti -leakage subassembly, the fixed subassembly includes the fixed ring, the fixed ring inboard fixedly connected in input pipe outside, the fixed ring outside rotatoryly connected with the swivel, in the utility model, through the swivel, drives the rope and draws the slide plate and compresses the spring no., makes the plug -in rod and withdraws into the fixed ring inside and the conversion head disengages, makes the conversion head unlock to the realization can quick assembly and disassembly fixed conversion head, makes the conversion head keep stable, avoids the conversion head and falls off and causes the knock to hurt.

Description

Technical Field

[0001] This utility model relates to the field of gas sampling devices, and in particular to a sampling device for detecting chemical gases. Background Technology

[0002] Chemical gases are key gaseous substances in the production, processing, and application of chemicals. They can be categorized by use as raw material gases, fuel gases, and process gases. Common types include hydrogen, oxygen, nitrogen, methane, ethylene, and chlorine. These gases are widely used in the synthesis of chemical products, providing reaction environments, and fuel supply. However, some gases are toxic, corrosive, or flammable and explosive, requiring strict control over their storage, transportation, and use to ensure safety. Gas detection sampling devices are the core equipment for collecting gas samples from the target environment, aiming to provide representative samples for subsequent detection and analysis. Their core components include sampling probes, conduits, filters, flow control units, and sample storage or delivery modules. They can be divided into active sampling and passive sampling according to the collection method. The device needs to be adapted to the characteristics of the gas being detected to avoid sample adsorption, contamination, or changes in composition. It is widely used in chemical, environmental protection, and security scenarios and is a key prerequisite for ensuring the accuracy and reliability of gas detection data.

[0003] The common gas sampling device is a sampling cylinder, which pressurizes and delivers gas into the cylinder for easy storage, transportation and retrieval. However, different rotating heads are required between the cylinder's input end and different gas sampling ports. These rotating heads are directly inserted into the cylinder's input end, which is very unstable and easily falls off and causes damage. Therefore, a sampling device for chemical gas detection is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a sampling device for chemical gas detection, which aims to improve the problem that different rotating heads are required between the input end of the gas cylinder and the sampling port of different gases. These rotating heads are directly inserted into the input end of the gas cylinder, which is very unstable and easily falls off and causes damage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sampling device for detecting chemical gases, comprising a steel cylinder, an input pipe fixedly connected to the left side of the steel cylinder, a valve fixedly connected to the outside of the input pipe, a converter slidably connected inside the input pipe, an output pipe fixedly connected to the right side of the steel cylinder, a pressure gauge fixedly connected to the outside of the output pipe, an explosion-proof valve fixedly connected to the right end of the output pipe, a fixing component installed outside the input pipe, and a leak-proof component installed inside the input pipe; The fixing component includes a fixing ring, the inner side of which is fixedly connected to the outside of the input pipe. A rotating ring is rotatably connected to the outside of the fixing ring. Four ropes are fixedly connected to the inner side of the rotating ring. A spring is sleeved on the outside of the ropes. A slide plate is fixedly connected to the inner side of the spring. A plug rod is fixedly connected to the inner side of the slide plate.

[0006] As a further description of the above technical solution: The leak-proof component includes a support plate and a sealing ring. The support plate is externally fixedly connected to the inner wall of the input pipe. A second spring is fixedly connected to the left side of the support plate. A sealing block is fixedly connected to the left end of the second spring. The sealing ring is externally fixedly connected to the inner wall of the input pipe.

[0007] As a further description of the above technical solution: The rope is externally slidably connected inside the fixed ring, and the rope is internally fixedly connected to the outside of the slide plate.

[0008] As a further description of the above technical solution: The outer side of the spring is fixedly connected to the inner wall of the fixed ring, and the outer side of the slide plate is slidably connected to the inner wall of the fixed ring.

[0009] As a further description of the above technical solution: The plug rod is externally slidably connected inside the fixed ring, and the plug rod is externally inserted into the adapter head.

[0010] As a further description of the above technical solution: The insertion rod is externally slidably connected inside the input tube.

[0011] As a further description of the above technical solution: The sealing block and the sealing ring abut against each other.

[0012] As a further description of the above technical solution: The spring is externally sleeved inside the input pipe, and the anti-leakage component is installed on the right side of the valve.

[0013] This utility model has the following beneficial effects: 1. In this utility model, by rotating the rotating ring, the rope pulls the slide plate to compress the spring, causing the plug rod to retract into the fixed ring and disengage from the converter head, thus unlocking the converter head. This enables quick assembly and disassembly of the converter head, keeping it stable and preventing it from falling off and causing damage.

[0014] 2. In this utility model, under the support of the support plate, the spring pushes the sealing block to abut against the sealing ring, so that the input pipe can be automatically sealed quickly after the gas collection is completed, avoiding gas leakage from the input pipe due to the valve not being tightened or forgotten to be tightened, which would cause pollution to the surrounding environment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a sampling device for detecting chemical gases proposed in this utility model; Figure 2 This is a schematic diagram of the conversion head of a sampling device for detecting chemical gases proposed in this utility model; Figure 3 This is a schematic diagram of the insertion rod of a sampling device for detecting chemical gases proposed in this utility model; Figure 4 This is a schematic diagram of the sealing block of a sampling device for detecting chemical gases proposed in this utility model.

[0016] Legend: 1. Gas cylinder; 2. Input pipe; 3. Valve; 4. Converter; 5. Output pipe; 6. Pressure gauge; 7. Explosion-proof valve; 8. Fixing ring; 9. Rotary ring; 10. Rope; 11. Spring 1; 12. Slide plate; 13. Insert rod; 14. Support plate; 15. Spring 2; 16. Sealing block; 17. Sealing ring. 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] Reference Figure 1 - Figure 4This utility model provides an embodiment of a sampling device for detecting chemical gases, comprising a steel cylinder 1, an input pipe 2 fixedly connected to the left side of the steel cylinder 1, a valve 3 fixedly connected to the outside of the input pipe 2, a converter 4 slidably connected inside the input pipe 2, an output pipe 5 fixedly connected to the right side of the steel cylinder 1, a pressure gauge 6 fixedly connected to the outside of the output pipe 5, and an explosion-proof valve 7 fixedly connected to the right end of the output pipe 5. The steel cylinder 1 is used to collect and store chemical gases, the input pipe 2 is used to transport the gas into the steel cylinder 1, the valve 3 is used to control the opening and closing of the input pipe 2, the converter 4 is used to facilitate connection with the sampling port, the output pipe 5 is used to transport the gas in the steel cylinder 1 out, the pressure gauge 6 is used to display the pressure inside the steel cylinder 1 in real time, and the explosion-proof valve 7 is used to control the opening and closing of the output pipe 5. At the same time, when the pressure is too high, the explosion-proof valve 7 can actively release pressure to avoid an explosion accident. A fixing component is installed outside the input pipe 2, and a leak-proof component is installed inside the input pipe 2. The fixing assembly includes a fixing ring 8, which is fixedly connected to the outside of the input pipe 2. A rotating ring 9 is rotatably connected to the outside of the fixing ring 8. Four ropes 10 are fixedly connected to the inside of the rotating ring 9. A spring 11 is sleeved on the outside of each rope 10. A slide plate 12 is fixedly connected to the inside of the spring 11. A rod 13 is fixedly connected to the inside of the slide plate 12. The fixing ring 8 is used to connect and limit other parts. The rotating ring 9 encloses the fixing ring 8 and is connected to the ropes 10 for easy rotation. The ropes 10 are used to pull the slide plate 12. The spring 11 is used to allow the slide plate 12 to automatically reset. The rod 13 can only move in a specified direction under the limitation of the fixing ring 8 and will not move or wobble randomly. The slide plate 12 is fixed to its outside to prevent the rod 13 from moving beyond its designated direction. The movement range causes detachment. The insertion rod 13 is used to fix the converter head 4 inside the input tube 2, so that the converter head 4 is fixed and prevents detachment. The rope 10 is externally slidably connected to the inside of the fixing ring 8. The inside of the rope 10 is fixedly connected to the outside of the slide plate 12, so that when the rope 10 moves, it can pull the slide plate 12 to move. The outside of the spring 11 is fixedly connected to the inner wall of the fixing ring 8, so that the spring 11 remains stable. The outside of the slide plate 12 is slidably connected to the inner wall of the fixing ring 8. The insertion rod 13 is externally slidably connected to the inside of the fixing ring 8. The fixing ring 8 simultaneously restricts the movement direction of the slide plate 12 and the insertion rod 13. The outside of the insertion rod 13 is inserted into the inside of the converter head 4, so that the converter head 4 is fixed. The outside of the insertion rod 13 is slidably connected to the inside of the input tube 2, restricting the movement direction of the insertion rod 13.

[0019] Reference Figure 1 - Figure 4The leak-proof assembly includes a support plate 14 and a sealing ring 17. The support plate 14 is externally fixedly connected to the inner wall of the input pipe 2. A second spring 15 is fixedly connected to the left side of the support plate 14. A sealing block 16 is fixedly connected to the left end of the second spring 15. The sealing ring 17 is externally fixedly connected to the inner wall of the input pipe 2. The support plate 14 is used to support the second spring 15. The second spring 15 is used to push the sealing block 16 to move. The sealing block 16 is used to cooperate with the sealing ring 17 to seal the input pipe 2. The sealing block 16 and the sealing ring 17 abut against each other to seal the input pipe 2. The second spring 15 is externally sleeved inside the input pipe 2 to keep the second spring 15 stable. The leak-proof assembly is installed on the right side of the valve 3 so that the leak-proof assembly can be used normally.

[0020] Working principle: When using cylinder 1 to collect chemical gas, first adjust the size of the converter head 4 according to the size of the collection port. By rotating the rotating ring 9, the rotating ring 9 drives the rope 10 to move. The rope 10 pulls the slide plate 12 to compress the spring 11, which in turn drives the insertion rod 13 into the fixing ring 8 until the insertion rod 13 is completely disengaged from the converter head 4. At this time, the fixed state of the converter head 4 is released. Then, take out the converter head 4 and place a converter head 4 of appropriate size. At this time, release the rotating ring 9. Under the limiting action of the fixing ring 8, the spring 11 quickly releases its elastic potential energy, pushes the slide plate 12, and quickly pushes out the insertion rod 13, so that it is inserted into the converter head 4, fixing the converter head 4 in the input pipe 2, thus completing the replacement. Then, open the valve 3 and insert the converter head 4 into the collection port. Open the hand valve on the collection port, and the gas will enter the input. Inside pipe 2, the gas simultaneously pushes the sealing block 16 to compress the second spring 15, causing the sealing ring 17 and the sealing block 16 to separate. At this time, the gas is transported into the steel cylinder 1 along the input pipe 2 and stored in the steel cylinder 1. The pressure gauge 6 is observed to avoid excessive pressure. After the collection is completed, the hand valve on the collection port is closed. At this time, there is no pressure source in the input pipe 2. Under the support of the support plate 14, the second spring 15 will immediately push the sealing block 16, causing the sealing block 16 to abut against the sealing ring 17, sealing the input pipe 2 and closing the valve 3. Even if the valve 3 is forgotten to be closed and the steel cylinder 1 is removed from the collection port, there will be no leakage accident, thus protecting the surrounding environment. When the gas is taken for testing, the gas in the steel cylinder 1 is transported out along the output pipe 5 by rotating the explosion-proof valve 7, which is convenient to take, saves time and effort, and is easy to operate.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sampling device for detecting chemical gases, comprising a steel cylinder (1), characterized in that: The cylinder (1) is fixedly connected to an input pipe (2) on the left side, a valve (3) is fixedly connected to the outside of the input pipe (2), a converter (4) is slidably connected inside the input pipe (2), an output pipe (5) is fixedly connected to the right side of the cylinder (1), a pressure gauge (6) is fixedly connected to the outside of the output pipe (5), an explosion-proof valve (7) is fixedly connected to the right end of the output pipe (5), a fixing component is installed outside the input pipe (2), and an anti-leakage component is installed inside the input pipe (2); The fixing component includes a fixing ring (8), the inner side of which is fixedly connected to the outside of the input pipe (2), a rotating ring (9) is rotatably connected to the outside of the fixing ring (8), four ropes (10) are fixedly connected to the inside of the rotating ring (9), a spring (11) is sleeved on the outside of the ropes (10), a slide plate (12) is fixedly connected to the inside of the spring (11), and a plug rod (13) is fixedly connected to the inside of the slide plate (12).

2. The sampling device for detecting chemical gases according to claim 1, characterized in that: The leak prevention component includes a support plate (14) and a sealing ring (17). The support plate (14) is externally fixedly connected to the inner wall of the input pipe (2). A second spring (15) is fixedly connected to the left side of the support plate (14). A sealing block (16) is fixedly connected to the left end of the second spring (15). The sealing ring (17) is externally fixedly connected to the inner wall of the input pipe (2).

3. The sampling device for detecting chemical gases according to claim 1, characterized in that: The rope (10) is externally slidably connected to the inside of the fixed ring (8), and the inside of the rope (10) is fixedly connected to the outside of the slide plate (12).

4. The sampling device for detecting chemical gases according to claim 1, characterized in that: The outer side of the spring (11) is fixedly connected to the inner wall of the fixed ring (8), and the outer side of the slide plate (12) is slidably connected to the inner wall of the fixed ring (8).

5. A sampling device for detecting chemical gases according to claim 1, characterized in that: The insertion rod (13) is externally slidably connected inside the fixing ring (8), and the insertion rod (13) is externally inserted into the converter head (4).

6. A sampling device for detecting chemical gases according to claim 1, characterized in that: The insertion rod (13) is externally slidably connected to the inside of the input tube (2).

7. A sampling device for detecting chemical gases according to claim 2, characterized in that: The sealing block (16) and the sealing ring (17) abut against each other.

8. A sampling device for detecting chemical gases according to claim 2, characterized in that: The spring 2 (15) is externally sleeved inside the input pipe (2), and the anti-leakage component is installed on the right side of the valve (3).

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