Pressure adjusting device of explosion-proof gas closed sampler

Abstract

The utility model discloses a pressure regulating device of an explosion-proof closed gas sampler, which relates to the technical field of gas sampling and comprises a pipeline ring, butt-joint threads are arranged on two sides of the pipeline ring, a sampling steel cylinder is connected onto the pipeline ring, an outlet component is mounted in the middle of the pipeline ring, and the pipeline ring is provided with a pressure regulating valve. The outlet assembly comprises an air outlet fixedly formed in the middle of the pipeline ring, a spring frame is fixedly installed above the air outlet, a first spring is arranged in the spring frame, the lower end of the first spring is connected with a sealing plug, a bottle opening assembly is connected to the sampling steel bottle, a top block is fixedly installed at the bottom of the sealing plug, and the bottom of the top block is fixedly connected with the sampling steel bottle. A stop block is fixedly installed on the inner wall of the spring frame, and a second sealing ring is arranged in the air outlet. According to the pressure regulating device of the explosion-proof type gas closed sampler, the outlet assembly and the bottle opening assembly are matched for use, so that gas in a pipeline can be quickly sampled, and the risk of explosion of a sampling steel bottle can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas sampling technical field, specifically is a pressure regulating device of explosion -proof type gas closed sampler. BACKGROUND

[0002] Pipeline gas sampling is a process of collecting gas samples from a pipeline, which is used to analyze the gas composition, concentration and pollutant content, and is widely used in chemical industry, environmental protection and energy fields. Special equipment such as a closed sampler or a probe is required during sampling to ensure the accuracy and representativeness of the sample.

[0003] When gas sampling is performed, the first step is to carefully select a suitable sampling point to ensure the uniformity of gas flow. After selecting the sampling point, the next step is to connect the sampling cylinder to the exhaust valve pre-set on the pipeline. After connecting the sampling cylinder, the operator needs to open the valve, so that the gas in the pipeline will begin to flow into the sampling cylinder, thereby completing the sampling process. During the sampling process, the operator also needs to operate the valves on the pipeline and the cylinder to control the inflow speed of the gas. The sampling steps are complicated and slow, and if the cylinder is subjected to severe thermal action, the gas inside the cylinder may expand, which increases the risk of gas explosion. SUMMARY

[0004] The utility model aims at providing a pressure regulating device of explosion -proof type gas closed sampler to solve the problem of complicated sampling steps and slow speed in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pressure regulating device of explosion -proof type gas closed sampler, including pipeline ring, both sides of the pipeline ring are equipped with butt joint screw threads, the pipeline ring is connected with sampling cylinder, the middle position of the pipeline ring is installed with outlet assembly, the outlet assembly includes the gas outlet that is fixedly installed in the middle position of the pipeline ring, spring holder is fixedly installed above the gas outlet, the first spring is equipped in the spring holder, the lower end of the first spring is connected with sealing plug, the bottle mouth assembly is connected on the sampling cylinder.

[0006] Preferably, the bottom of the sealing plug is fixedly installed with a top block, a blocking block is fixedly installed on the inner wall of the spring holder, and a second sealing ring is arranged in the gas outlet.

[0007] Preferably, a groove is formed in the inner wall of the gas outlet, and the first sealing ring is installed in the gas outlet through the groove.

[0008] Preferably, the first spring is fixedly installed above the gas outlet through the spring holder, one end of the first spring is fixedly installed at the top of the spring holder, and the other end of the first spring is fixedly installed on the sealing plug.

[0009] Preferably, the bottle neck assembly includes a bottle neck body fixedly installed on the sampling cylinder, a retaining ring fixedly installed at the upper end of the bottle neck body, a pre-cracked groove formed on the retaining ring, a spring seat fixedly installed at the lower edge of the bottle neck body, a second spring provided on the spring seat, and the elastic coefficient of the second spring being greater than that of the first spring, a plunger movably installed inside the bottle neck body, a second sealing ring sleeved on the plunger, a sampling gas passage formed on the plunger, a pressure relief valve installed at the upper end of the plunger and connected to the sampling gas passage, and an air inlet formed at the upper edge of the bottle neck body.

[0010] Preferably, the plunger has a groove, and the second sealing ring is installed on the plunger through the groove.

[0011] Preferably, one end of the second spring is connected to the spring seat, and the other end of the second spring is connected to the plunger, the plunger being confined within the bottle neck body by a retaining ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this application, the first spring applies continuous pressure to the sealing plug, ensuring its effective sealing of the upper end of the gas outlet. During the insertion of the bottle neck body into the gas outlet, the sealing plug is pushed up until it reaches the blocking block and is blocked, thus stopping further upward movement. At this point, the bottle neck body can continue to advance upwards until the inlet on the bottle neck body enters the pipe ring. After the inlet enters the pipe ring, the plunger is pressed down, precisely aligning the sampling gas path with the inlet. When the sampling gas path is aligned with the inlet, the sampling cylinder is connected to the gas pipeline, thereby completing the rapid gas sampling process.

[0014] 2. After sampling is completed, the sampling cylinder can be removed. Upon removal, the first spring drives the sealing plug downwards to close the outlet; the second spring pushes the plunger upwards to close the inlet, preventing leakage of gas from the sampling cylinder. If the internal pressure of the sampling cylinder is too high, the pressure relief valve will release some gas to reduce the internal pressure. When the sampling cylinder experiences severe thermal shock, the internal gas expansion will push the plunger upwards, applying pressure to the retaining ring, causing the retaining ring to break along the pre-cracked groove. After the retaining ring breaks, the plunger loses its obstruction, and the gas inside the sampling cylinder is rapidly released, thereby reducing the risk of explosion. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0018] Figure 4 This is a schematic diagram of the export component of this utility model;

[0019] Figure 5 This is a schematic diagram of the bottle mouth assembly of this utility model.

[0020] Labels in the diagram: 1. Pipe ring; 2. Butt thread; 3. Sampling cylinder; 4. Outlet assembly; 401. Gas outlet; 402. Top block; 403. Sealing plug; 404. First spring; 405. Spring bracket; 406. Blocking block; 407. First sealing ring; 5. Bottle neck assembly; 501. Bottle neck body; 502. Spring seat; 503. Second spring; 504. Sampling gas path; 505. Gas inlet; 506. Plunger; 507. Second sealing ring; 508. Pressure relief valve; 509. Retaining ring; 510. Pre-crack groove. Detailed Implementation

[0021] 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.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a technical solution for a pressure regulating device of an explosion-proof gas sealed sampler, including a pipe ring 1, with mating threads 2 on both sides of the pipe ring 1, a sampling cylinder 3 connected to the pipe ring 1, an outlet component 4 installed in the middle of the pipe ring 1, and a bottle mouth component 5 connected to the sampling cylinder 3. The cooperation between the outlet component 4 and the bottle mouth component 5 can quickly sample the gas in the pipe and reduce the risk of explosion of the sampling cylinder 3.

[0023] like Figure 3 and Figure 4 As shown, the outlet component 4 includes an air outlet 401 fixedly installed in the middle of the pipe ring 1. A spring frame 405 is fixedly installed above the air outlet 401. A first spring 404 is provided inside the spring frame 405. A sealing plug 403 is connected to the lower end of the first spring 404. A top block 402 is fixedly installed at the bottom of the sealing plug 403. A blocking block 406 is fixedly installed on the inner wall of the spring frame 405. A first sealing ring 407 is provided inside the air outlet 401. A groove is opened on the inner wall of the air outlet 401. The first sealing ring 407 is installed in the air outlet 401 through the groove.

[0024] Specifically, the first spring 404 applies continuous pressure to the sealing plug 403. This pressure ensures that the sealing plug 403 effectively blocks the upper end of the outlet 401, thus guaranteeing the sealing of the entire system. As the bottle neck body 501 is inserted, it pushes up the sealing plug 403, causing it to begin to move upwards. During its upward movement, the sealing plug 403 encounters a blocking block 406, which restricts its upward movement, ensuring it stops moving upwards after reaching a predetermined position. At this point, the operator can continue to push up the bottle neck body 501 until the air inlet 505 on the bottle neck body 501 successfully enters the interior of the pipe ring 1. Once the air inlet 505 enters the interior of the pipe ring 1, the plunger 506 is pressed down due to pressure, thus aligning the sampling gas path 504 with the air inlet 505. When the sampling gas path 504 is precisely aligned with the air inlet 505, the sampling cylinder 3 forms a connected path with the gas pipeline, allowing the gas to be sampled quickly through this path.

[0025] like Figure 3 and Figure 5 As shown, the bottle neck assembly 5 includes a bottle neck body 501 fixedly installed on the sampling cylinder 3. A retaining ring 509 is fixedly installed on the upper end of the bottle neck body 501. A pre-cracked groove 510 is opened on the retaining ring 509. A spring seat 502 is fixedly installed at the lower edge of the bottle neck body 501. A second spring 503 is provided on the spring seat 502, and the elastic coefficient of the second spring 503 is greater than the elastic coefficient of the first spring 404. A plunger 506 is movably installed inside the bottle neck body 501. A second sealing ring 507 is sleeved on the plunger 506. A sampling gas passage 504 is opened on the plunger 506. A pressure relief valve 508 is installed at the upper end of the plunger 506 and is connected to the sampling gas passage 504. An air inlet 505 is opened at the upper edge of the bottle neck body 501. A groove is opened on the plunger 506, and the second sealing ring 507 is installed on the plunger 506 through the groove.

[0026] Specifically, after sampling is completed, sampling cylinder 3 can be removed. When sampling cylinder 3 is removed, the first spring 404 automatically pushes the sealing plug 403 downward, ensuring that the outlet 401 is effectively sealed to prevent gas leakage. At the same time, the second spring 503 causes the plunger 506 to move upward, thereby sealing the inlet 505 and further ensuring that the gas in sampling cylinder 3 will not leak. If the gas pressure in sampling cylinder 3 is too high, the pressure relief valve 508 will function to release excess gas to reduce internal pressure and ensure safety. In addition, if sampling cylinder 3 is subjected to severe heat for some reason, causing the gas inside the cylinder to expand, this expanded gas will push the plunger 506 upward and apply pressure to the retaining ring 509. Under pressure, the retaining ring 509 will break along the pre-cracked groove 510. Once the retaining ring 509 breaks, the plunger 506 is no longer obstructed, and the gas in sampling cylinder 3 can be quickly released. This design greatly reduces the risk of the sampling cylinder 3 exploding in extreme situations, ensuring the safety of the entire sampling process.

[0027] Working principle: During use, the pipe ring 1 is installed on the gas pipeline via the mating thread 2. The first spring 404 applies pressure to the sealing plug 403, causing the sealing plug 403 to block the upper end of the gas outlet 401, preventing gas in the pipeline from leaking out through the gas outlet 401. The user can insert the bottle mouth body 501 of the sampling cylinder 3 into the gas outlet 401. During the insertion of the bottle mouth body 501 into the gas outlet 401, it will push up the sealing plug 403. When the sealing plug 403 moves up to the blocking block 406, it will be blocked and stop moving up. At this time, the bottle mouth body 501 can continue to be pushed up so that the air inlet 505 on the bottle mouth body 501 enters the pipe ring 1. After the air inlet 505 enters the pipe ring 1, the plunger 506 will be pressed down, so that the sampling gas path 504 is aligned with the air inlet 505. When the sampling gas path 504 is aligned with the air inlet 505, the sampling cylinder 3 is connected to the gas pipeline, thereby realizing rapid gas sampling. After sampling is completed, the sampling cylinder 3 can be removed. Upon removal, the first spring 404 pushes the sealing plug 403 downwards, blocking the outlet 401. The second spring 503 pushes the plunger 506 upwards, sealing the inlet 505 and preventing gas leakage from the sampling cylinder 3. If the gas pressure inside the sampling cylinder 3 is too high, the pressure relief valve 508 can release some gas to reduce the internal pressure. When the sampling cylinder 3 is intensely heated, the expanding gas inside pushes the plunger 506 upwards, applying pressure to the retaining ring 509, causing it to break along the pre-crack groove 510. After the retaining ring 509 breaks, the plunger 506 loses its obstruction, and the gas inside the sampling cylinder 3 is rapidly released, reducing the risk of explosion.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pressure regulating device for an explosion-proof gas sealed sampler, comprising a pipe ring (1), wherein the pipe ring (1) is provided with mating threads (2) on both sides, characterized in that: A sampling cylinder (3) is connected to the pipe ring (1). An outlet assembly (4) is installed in the middle of the pipe ring (1). The outlet assembly (4) includes an outlet (401) fixedly installed in the middle of the pipe ring (1). A spring frame (405) is fixedly installed above the outlet (401). A first spring (404) is provided inside the spring frame (405). A sealing plug (403) is connected to the lower end of the first spring (404). A bottle mouth assembly (5) is connected to the sampling cylinder (3).

2. The pressure regulating device for an explosion-proof gas sealed sampler according to claim 1, characterized in that: The bottom of the sealing plug (403) is fixedly installed with a top block (402), the inner wall of the spring frame (405) is fixedly installed with a blocking block (406), and the air outlet (401) is provided with a first sealing ring (407).

3. The pressure regulating device for an explosion-proof gas sealed sampler according to claim 2, characterized in that: A groove is provided on the inner wall of the air outlet (401), and the first sealing ring (407) is installed in the air outlet (401) through the groove.

4. The pressure regulating device for an explosion-proof gas sealed sampler according to claim 3, characterized in that: The first spring (404) is fixedly installed above the air outlet (401) by the spring bracket (405). One end of the first spring (404) is fixedly installed on the top of the spring bracket (405), and the other end of the first spring (404) is fixedly installed on the sealing plug (403).

5. The pressure regulating device for an explosion-proof gas sealed sampler according to claim 4, characterized in that: The bottle neck assembly (5) includes a bottle neck body (501) fixedly installed on the sampling cylinder (3). A retaining ring (509) is fixedly installed on the upper end of the bottle neck body (501), and a pre-crack groove (510) is provided on the retaining ring (509). A spring seat (502) is fixedly installed at the lower edge of the bottle neck body (501), and a second spring (503) is provided on the spring seat (502), and the elastic coefficient of the second spring (503) is greater than that of the first spring. The elastic coefficient of the spring (404) is specified. A plunger (506) is movably installed inside the bottle mouth body (501). A second sealing ring (507) is fitted on the plunger (506). A sampling gas passage (504) is opened on the plunger (506). A pressure relief valve (508) is installed at the upper end of the plunger (506) and is connected to the sampling gas passage (504). An air inlet (505) is opened at the upper edge of the bottle mouth body (501).

6. The pressure regulating device for an explosion-proof gas sealed sampler according to claim 5, characterized in that: The plunger (506) has a groove, and the second sealing ring (507) is installed on the plunger (506) through the groove.

7. The pressure regulating device for an explosion-proof gas sealed sampler according to claim 6, characterized in that: One end of the second spring (503) is connected to the spring seat (502), and the other end of the second spring (503) is connected to the plunger (506). The plunger (506) is restricted within the bottle mouth body (501) by a retaining ring (509).

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