Coal gas sampling device

Abstract

The utility model relates to the field of coal gas sampling, and discloses a coal gas sampling device which comprises a gas conveying pipe, a blow-off valve is installed on the inner wall of the gas conveying pipe, a collecting mechanism is arranged at the right end of the gas conveying pipe, the collecting mechanism is connected with the gas conveying pipe through a conveying mechanism, and the conveying mechanism comprises a connecting assembly and a fixing assembly. The collecting mechanism comprises a gas collecting assembly and a locking assembly, the gas collecting assembly comprises a gas storage tank, the connecting assembly comprises a connecting disc, the left end of the connecting disc is installed at the right end of the blow-off valve, the right end of the connecting disc is fixedly connected with a gas conveying sleeve, and a gas conveying hole is formed in the left end of the gas conveying sleeve. According to the utility model, by adopting the integrated arrangement, after the sampling is completed, the gas transmission hole is closed through rotation, so that the residual gas in the corrugated pipe can be limited in the corrugated pipe, and the gas is limited and cannot be diffused outwards, and therefore, the damage to the body of an operator caused by the diffusion of the gas can be reduced.

Description

Technical Field

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

[0002] Coal gas is a gas containing combustible components that is processed from coal as raw material. Since it is a gas, it is generally transported by pipeline. In order to obtain a representative coal gas sample, the coal gas in the pipeline is generally sampled directly during actual production, so as to carry out subsequent component analysis, quality inspection, process monitoring and many other tasks.

[0003] In the prior art, when sampling gas, it is generally necessary to use a connecting pipe to connect the gas pipeline and the sampling device. A non-return device is provided inside the sampling device itself to prevent the gas from flowing back. However, when sampling, residual gas will remain inside the connecting pipe. This part of the gas can neither return to the pipeline nor enter the sampling device. It will only be directly released when the connecting pipe is disconnected from the gas pipeline. This will cause the gas content near the sampling point to increase. Excessive gas content will affect the health of the operator. Therefore, a gas sampling device is proposed to solve the above problems. Utility Model Content

[0004] In order to remedy the above deficiencies, the utility model provides a gas sampling device, which aims to improve the problem in the prior art that "when a connecting pipe is used to connect the sampling device for sampling, the residual gas in the connecting pipe will be directly dissipated into the air as the connecting pipe opening is exposed".

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a coal gas sampling device, comprising a gas pipeline, a relief valve is installed on the inner wall of the gas pipeline, a collecting mechanism is arranged at the right end of the gas pipeline, the collecting mechanism is connected with the gas pipeline through a transmission mechanism, the transmission mechanism comprises a connecting assembly and a fixing assembly, the collecting mechanism comprises a gas collecting assembly and a locking assembly, the gas collecting assembly comprises a gas storage tank, the connecting assembly comprises a connecting disk, the left end of the connecting disk is installed at the right end of the relief valve, the right end of the connecting disk is fixedly connected with a gas sleeve, the left end of the gas sleeve is provided with a gas delivery hole, the inner wall of the gas sleeve is rotatably connected with a partition, the left end of the partition is provided with a vent, the left end of the partition is fixedly connected with a sealing ring, the right end of the gas sleeve is installed with a bellows, and the right end of the bellows is installed at the left end of the gas storage tank.

[0006] As a further description of the above technical solution:

[0007] The fixing assembly includes a fixing sleeve, the right end of which is fixedly connected to the left end of the gas tank, the top of which passes through and is slidably connected with a slide, the lower surface of the slide is fixedly connected with a clamping block near the left end, and the clamping block is arranged in a triangle shape.

[0008] As a further description of the above technical solution:

[0009] The slide plate is configured in a T-shape, the bottom end of the slide plate is fixedly connected with a fixing spring, and the bottom end of the fixing spring is fixedly connected to the inner wall of the fixing sleeve.

[0010] As a further description of the above technical solution:

[0011] The gas collecting assembly also includes a sealing rotating shaft, the left end of which is rotatably connected to the right end of the gas storage tank, and the left end of which is fixedly connected to a suction threaded rod.

[0012] As a further description of the above technical solution:

[0013] The outer wall of the air extraction threaded rod is threadedly connected with a piston block, the piston block is connected to the inner wall of the gas storage tank, and the right end of the sealing shaft is fixedly connected with a turning handle.

[0014] As a further description of the above technical solution:

[0015] The locking assembly comprises a support frame, the left end of the support frame is fixedly connected to the right end of the gas storage tank, and the right end of the support frame is slidably connected to an extrusion block.

[0016] As a further description of the above technical solution:

[0017] The front end of the support frame is threadedly connected with an adjusting threaded rod, and the left end of the adjusting threaded rod is rotatably connected to the right end of the extrusion block.

[0018] As a further description of the above technical solution:

[0019] The right end of the adjusting threaded rod is fixedly connected with a knob, and the outer wall of the knob is provided with an anti-sliding block.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, by adopting an integrated setting, after the sampling is completed, the gas remaining inside the bellows can be confined inside the bellows by rotating and closing the gas delivery hole. This part of the gas will be restricted and cannot be dissipated outward, thus reducing the damage to the operator's body caused by the gas emission.

[0022] 2. In the utility model, by setting a locking component, after the sampling is completed, the adjusting threaded rod can be driven to rotate by rotating the knob. The rotation of the adjusting threaded rod can drive the extrusion block to tightly squeeze the handle. At this time, the handle will be difficult to rotate. In this way, the handle can be prevented from accidentally rotating during the transportation of the entire device, resulting in changes in the internal air pressure of the device, and the overall stability of the device is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the overall device in the utility model;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the collecting mechanism and the transmission mechanism in the utility model;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure section of the connection component in the utility model;

[0026] Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the fixing component in the utility model;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure cross section of the gas collecting assembly in the utility model;

[0028] Figure 6 It is a three-dimensional structural schematic diagram of the locking component in the utility model.

[0029] Legend:

[0030] 1. Gas pipe; 2. Release valve; 3. Collecting mechanism; 31. Gas collecting assembly; 311. Gas storage tank; 312. Sealing shaft; 313. Turning handle; 314. Vacuum threaded rod; 315. Piston block; 32. Locking assembly; 321. Support frame; 322. Extrusion block; 323. Adjusting threaded rod; 324. Knob; 4. Transmission mechanism; 41. Connecting assembly; 411. Connecting plate; 412. Gas sleeve; 413. Gas hole; 414. Partition; 415. Sealing ring; 416. Vent; 417. Bellows; 42. Fixing assembly; 421. Fixing sleeve; 422. Slide plate; 423. Block; 424. Fixing spring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1- Figure 3 , an embodiment of the utility model: a gas sampling device, comprising a gas pipeline 1 for transmitting gas, the inner wall of the gas pipeline 1 is equipped with a relief valve 2 for discharging gas to the outside, the relief valve 2 is an inherent structure of the gas pipeline 1, a valve is installed at the top of the gas pipeline 1, and the relief valve 2 can be connected by opening the valve, a collecting mechanism 3 for collecting gas is arranged at the right end of the gas pipeline 1, the collecting mechanism 3 is connected to the gas pipeline 1 through a transmission mechanism 4, the transmission mechanism 4 comprises a connecting component 41 for connecting the relief valve 2 and a fixing component 42 for fixing the connecting component 41, the collecting mechanism 3 comprises a gas collecting component 31 for storing gas and a locking component 32 for fixing the gas collecting component 31, the gas collecting component 31 comprises a gas storage tank 311 for storing gas, the gas storage tank 311 is integrally formed and has good sealing performance, the connecting component 41 comprises a connecting disk 411 for connecting the relief valve 2, the left end of the connecting disk 411 is installed at the right end of the relief valve 2, the connecting disk 411 and the relief valve 2 are connected. The valve 2 is fixedly connected by bolts, and the right end of the connecting plate 411 is fixedly connected with a gas delivery sleeve 412 for closing the left end opening of the bellows 417, and the left end of the gas delivery sleeve 412 is provided with a gas delivery hole 413 for gas to pass through, and the inner wall of the gas delivery sleeve 412 is rotatably connected with a partition 414 for blocking the gas delivery hole 413, and the left end of the partition 414 is provided with a vent hole 416 for gas to pass through the partition 414. When the gas delivery hole 413 is aligned with the vent hole 416, the gas can pass through the gas delivery hole 413. The hole 413 and the vent hole 416 flow to the right, and the left and right ends of the partition 414 are fixedly connected with a sealing ring 415 for increasing the sealing of the connection between the partition 414 and the gas sleeve 412. The right end of the gas sleeve 412 is installed with a bellows 417 for transmitting and temporarily storing gas. The right end of the bellows 417 is installed at the left end of the gas storage tank 311. After passing through the gas delivery hole 413 and the vent hole 416, the gas can continue to flow to the right through the bellows 417 and enter the interior of the gas storage tank 311.

[0033] Reference Figure 2 - Figure 4The fixing assembly 42 includes a fixing sleeve 421 for limiting the movement of the partition 414. When the partition 414 is inserted into the fixing sleeve 421, the partition 414 will be restricted from rotating. The right end of the fixing sleeve 421 is fixedly connected to the left end of the gas storage tank 311. The top of the fixing sleeve 421 passes through and is slidably connected with a slide plate 422 for driving the block 423 to move. The lower surface of the slide plate 422 is fixedly connected with a block 423 for fixing the partition 414 near the left end. The block 423 is set to a triangle. When the triangular inclined surface at the front end of the block 423 is squeezed, the block 423 will be forced to move upward. The slide plate 422 is set to a T shape. The bottom end of the slide plate 422 is fixedly connected with a fixing spring 424 for driving the slide plate 422 to move downward. The bottom end of the fixing spring 424 is fixedly connected to the inner wall of the fixing sleeve 421. The fixing spring 424 will always pull the slide plate 422 downward, thus preventing the slide plate 422 from moving at will.

[0034] Reference Figure 2 and Figure 5 The gas collecting component 31 also includes a sealing shaft 312 for supporting the rotation of the exhaust threaded rod 314. The left end of the sealing shaft 312 is rotatably connected to the right end of the gas storage tank 311. The sealing shaft 312 is a prior art and can maintain a seal during rotation, thereby preventing leakage from the right side of the gas storage tank 311. The left end of the sealing shaft 312 is fixedly connected to the exhaust threaded rod 314 for driving the piston block 315 to move. The outer wall of the exhaust threaded rod 314 is threadedly connected to the piston block 315 for assisting exhaust. The piston block 315 is piston-connected to the inner wall of the gas storage tank 311. The piston block 315 will move left and right on the inner wall of the gas storage tank 311 without rotating. The right end of the sealing shaft 312 is fixedly connected to a handle 313 for facilitating the operator to rotate the sealing shaft 312.

[0035] Reference Figure 2 and Figure 6 The locking assembly 32 includes a support frame 321 for supporting the extrusion block 322. The left end of the support frame 321 is fixedly connected to the right end of the gas tank 311. The right end of the support frame 321 is slidably connected to the extrusion block 322 for squeezing the turning handle 313. The rear end of the extrusion block 322 is set in an arc shape, which can fit the outer wall of the turning handle 313. The extrusion block 322 is made of rubber material with a relatively rough surface and can provide a large friction force after contacting the outer wall of the turning handle 313. The front end of the support frame 321 is threadedly connected with an adjusting threaded rod 323 for driving the extrusion block 322 to move. The left end of the adjusting threaded rod 323 is rotatably connected to the right end of the extrusion block 322. The extrusion block 322 can be driven to move forward and backward by rotating the adjusting threaded rod 323. The right end of the adjusting threaded rod 323 is fixedly connected to a knob 324 for facilitating the operator to rotate the adjusting threaded rod 323. The outer wall of the knob 324 is provided with an anti-sliding block.

[0036] Working principle: When it is necessary to extract a gas sample, the handle 313 can be rotated first to drive the suction threaded rod 314 to rotate and move the piston block 315 to the rightmost end of the inner wall of the gas storage tank 311, and then the connecting plate 411 can be connected to the right end of the relief valve 2 and the top valve of the relief valve 2 can be opened, and then the slide plate 422 can be moved to drive the block 423 to move upward and no longer block the partition 414, and then the partition 414 can be moved to the left to separate it from the inner wall of the fixed sleeve 421, and then the partition 414 can be rotated to drive the gas delivery hole 413 to align with the vent hole 416, so that the gas delivery pipe 1 and the gas storage tank 311 will be connected, and then it can be rotated. The turning handle 313 drives the exhaust threaded rod 314 to rotate, thereby driving the piston block 315 to rotate left to discharge the air inside the gas tank 311. Then, the turning handle 313 is rotated in the opposite direction to drive the piston block 315 to move right to suck out the gas inside the gas pipe 1. This process is repeated several times to fill the gas tank 311 with gas. At this time, the top valve of the relief valve 2 can be closed first, and then the partition plate 414 can be rotated to stagger the air vent 416 with the gas hole 413. In this way, the gas pipe 1 and the gas tank 311 will no longer be connected. After that, the bolts can be removed to remove the connecting plate 411 from the right end of the relief valve 2, and a collection is completed.

[0037] When the collection is completed, the bellows 417 can be compressed and the partition 414 can be driven to reinsert into the interior of the fixed sleeve 421. During this process, the partition 414 will squeeze the block 423 to make it move upward. When the right end of the partition 414 fits against the inner wall of the fixed sleeve 421, the fixed spring 424 will pull the slide plate 422 to drive the block 423 to move downward to block the fixed spring 424. At this time, the fixed spring 424 will be re-fixed and cannot move. Then the knob 324 can be rotated to drive the squeezing block 322 to fit closely against the outer wall of the turning handle 313, thereby preventing the turning handle 313 from rotating at will.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas sampling device, comprising a gas delivery pipe (1), wherein a relief valve (2) is installed on the inner wall of the gas delivery pipe (1), characterized in that: A collecting mechanism (3) is provided at the right end of the gas delivery pipe (1). The collecting mechanism (3) is connected to the gas delivery pipe (1) via a transmission mechanism (4). The transmission mechanism (4) comprises a connecting assembly (41) and a fixing assembly (42). The collecting mechanism (3) comprises a gas collecting assembly (31) and a locking assembly (32). The gas collecting assembly (31) comprises a gas storage tank (311). The connecting assembly (41) comprises a connecting plate (411). The left end of the connecting plate (411) is mounted on the right end of the relief valve (2). The right end of the receiving plate (411) is fixedly connected to a gas delivery sleeve (412), the left end of the gas delivery sleeve (412) is provided with a gas delivery hole (413), the inner wall of the gas delivery sleeve (412) is rotatably connected to a partition (414), the left end of the partition (414) is provided with a vent hole (416), the left and right ends of the partition (414) are fixedly connected to a sealing ring (415), the right end of the gas delivery sleeve (412) is installed with a bellows (417), and the right end of the bellows (417) is installed at the left end of the gas storage tank (311).

2. A gas sampling device according to claim 1, characterized in that: The fixing assembly (42) comprises a fixing sleeve (421), the right end of the fixing sleeve (421) being fixedly connected to the left end of the gas storage tank (311), a slide plate (422) penetrating the top end of the fixing sleeve (421) and being slidably connected thereto, a clamping block (423) being fixedly connected to the lower surface of the slide plate (422) near the left end, the clamping block (423) being arranged in a triangular shape.

3. A gas sampling device according to claim 2, characterized in that: The slide plate (422) is configured in a T-shape, the bottom end of the slide plate (422) is fixedly connected to a fixing spring (424), and the bottom end of the fixing spring (424) is fixedly connected to the inner wall of the fixing sleeve (421).

4. A gas sampling device according to claim 1, characterized in that: The gas collecting assembly (31) further comprises a sealing rotating shaft (312), the left end of the sealing rotating shaft (312) being rotatably connected to the right end of the gas storage tank (311), and the left end of the sealing rotating shaft (312) being fixedly connected to a gas extraction threaded rod (314).

5. A gas sampling device according to claim 4, characterized in that: The outer wall of the air extraction threaded rod (314) is threadedly connected to a piston block (315), the piston of the piston block (315) is piston-connected to the inner wall of the gas storage tank (311), and the right end of the sealing rotating shaft (312) is fixedly connected to a turning handle (313).

6. A gas sampling device according to claim 1, characterized in that: The locking assembly (32) comprises a support frame (321), the left end of the support frame (321) is fixedly connected to the right end of the gas storage tank (311), and the right end of the support frame (321) is slidably connected to a squeezing block (322).

7. A gas sampling device according to claim 6, characterized in that: The front end of the support frame (321) is threadedly connected to an adjusting threaded rod (323), and the left end of the adjusting threaded rod (323) is rotatably connected to the right end of the extrusion block (322).

8. A gas sampling device according to claim 7, characterized in that: The right end of the adjusting threaded rod (323) is fixedly connected to a knob (324), and an anti-sliding block is provided on the outer wall of the knob (324).

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