A sampling device for natural gas component analysis

Abstract

The utility model relates to natural gas detection equipment technical field discloses a natural gas component analysis sampling device, including bottle body, when the control screw handle makes piston move upwards along the bottle body, the slide column of one -way pipe will cooperate sealed plug under the action of piston air extraction and separate from air extraction pipe, and further make natural gas from air extraction pipe into piston, and the slide column in two -way pipe is because reverse installation in two -way pipe, and further make external gas unable to enter the bottle body, on the contrary, when the control screw handle makes piston move downwards relative bottle body, natural gas will be discharged from the bottle body for detecting, and cannot pass through air extraction pipe and discharge, before sucking in natural gas, repeatedly control piston moves up and down can discharge the bottle body internal sundry gas, when using, the cork can ensure the airtightness of natural gas in the bottle body, and the cork can be taken off and realize the extraction of natural gas through air extraction guide pipe and air injection guide pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of natural gas detection equipment, specifically a natural gas component analysis and sampling device. Background Technology

[0002] Natural gas component analysis sampling devices are specialized equipment used to collect and analyze natural gas samples. They are mainly used in laboratories or on-site to detect the composition of natural gas. By solving problems such as poor sealing and complex operation in traditional sampling, they have become a fundamental link in the quality control of the entire natural gas chain from production to consumption.

[0003] Chinese patent provides a sampling device suitable for natural gas component analysis, publication number CN219957530U, comprising: a pipeline assembly including a natural gas pipeline and a gas guide pipe, one end of the gas guide pipe being disposed through the upper part of the natural gas pipeline, the other end of the gas guide pipe being provided with a one-way valve, and a sealing component being provided on one side of the gas guide pipe; and a reflux assembly including a one-way gas pipe and a pump, one end of the one-way gas pipe being connected to the other side of the gas guide pipe, and the other end being connected to the pump, the pump being connected to the natural gas pipeline. This utility model is mainly used for natural gas component sampling.

[0004] The aforementioned device has the function of transporting residual natural gas back to the natural gas pipeline. However, existing devices have residual gas inside the pipeline during gas extraction. Directly extracting natural gas will dilute or contaminate the natural gas, thereby affecting the sampling results of natural gas component analysis. At the same time, the problem of natural gas airtightness needs to be solved during sampling or spitting out. Therefore, a natural gas component analysis sampling device is needed. Utility Model Content

[0005] The purpose of this invention is to provide a natural gas component analysis sampling device to solve the problems of existing devices where residual gas inside the pipeline dilutes or contaminates the natural gas, and the problem of airtightness in natural gas extraction and delivery.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a natural gas component analysis sampling device, comprising a bottle body, a piston slidably mounted inside the bottle body, and a gas control mechanism provided on the bottle body; the gas control mechanism includes a threaded handle, the threaded handle being threadedly mounted on the bottle body, a suction pipe fixedly mounted at one end of the bottle body, and an injection pipe fixedly mounted on one side of the bottle body, a first-stage pipe fixedly mounted at one end of the suction pipe, and a second-stage pipe fixedly mounted at one end of the injection pipe, both the second-stage pipe and the first-stage pipe having sliding rods slidably mounted inside, a sealing plug fixedly mounted at one end of each sliding rod, and support springs fixedly mounted between each of the two sliding rods and the first-stage pipe and the second-stage pipe, respectively.

[0007] Preferably, one end of the threaded shank is rotatably mounted on the piston, and the gas injection tube is located at the bottom of the bottle.

[0008] Preferably, the sealing plug on the slide of the first passage is adapted to the bottle body, and the sealing plug on the slide of the second passage is adapted to the second passage.

[0009] Preferably, the two sliding pillars are slidably mounted on the first and second through pipes in opposite directions.

[0010] Preferably, the first and second connecting pipes are provided with a connecting mechanism, which includes an air extraction conduit and an air injection conduit. The air extraction conduit and the air injection conduit are respectively sleeved on the first and second connecting pipes, and two pressure rings are sleeved on both the air extraction conduit and the air injection conduit. A stopper is embedded at one end of both the air extraction conduit and the air injection conduit, and two sealing rings are sleeved side by side on the stopper.

[0011] Preferably, both the first and second connecting pipes are provided with annular protrusions, and both the suction pipe and the injection pipe are adapted to the annular protrusions.

[0012] Preferably, the stopper is embedded in the air extraction conduit and the air injection conduit, and the sealing ring is adapted to the air extraction conduit and the air injection conduit, respectively.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1) In this natural gas component analysis sampling device, when the control screw handle moves the piston upward along the cylinder body, the sliding column at the No. 1 passage pipe will cooperate with the sealing plug to disengage from the gas extraction pipe under the action of the piston's suction, thereby allowing natural gas to enter the piston from the gas extraction pipe. The sliding column in the No. 2 passage pipe is installed in the opposite direction in the No. 2 passage pipe, thus preventing external gas from entering the cylinder body. Conversely, when the control screw handle moves the piston downward relative to the cylinder body, natural gas will be discharged from the cylinder body for testing, and cannot be discharged through the gas extraction pipe. Before drawing in natural gas, repeatedly controlling the piston to move up and down can discharge the impurities inside the cylinder body.

[0015] 2) This natural gas component analysis sampling device has a gas extraction pipe and a gas injection pipe installed on the No. 1 pipe and the No. 2 pipe respectively, and the gas extraction pipe and the gas injection pipe are reinforced by a pressure ring. The gas extraction pipe and the gas injection pipe are embedded with plugs. During use, the plugs can ensure the airtightness of the natural gas in the cylinder. The gas extraction pipe and the gas injection pipe can be injected by removing the plugs. Attached Figure Description

[0016] Figure 1This is a three-dimensional structural diagram of a natural gas component analysis sampling device according to an embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of the device in an embodiment of the present utility model;

[0018] Figure 3 This is a cross-sectional exploded view of the gas control mechanism in an embodiment of this utility model;

[0019] Figure 4 As an embodiment of this utility model Figure 3 Enlarged view of A in the middle;

[0020] Figure 5 This is a three-dimensional structural exploded view of the connecting mechanism in an embodiment of this utility model.

[0021] In the diagram: 1. Bottle body; 2. Piston; 3. Gas control mechanism; 301. Threaded handle; 302. Suction pipe; 303. Injection pipe; 304. First through pipe; 305. Second through pipe; 306. Sliding column; 307. Sealing plug; 308. Support spring; 4. Connecting mechanism; 401. Suction guide tube; 402. Injection guide tube; 403. Pressure ring; 404. Stopper; 405. Sealing ring. Detailed Implementation

[0022] 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.

[0023] Example 1

[0024] Combination Figures 1-4 A natural gas component analysis sampling device includes a cylinder body 1, a piston 2 slidably installed inside the cylinder body 1, and a gas control mechanism 3 provided on the cylinder body 1. The gas control mechanism 3 includes a threaded handle 301, which is threadedly installed on the cylinder body 1. A suction pipe 302 is fixedly installed at one end of the cylinder body 1, and a gas injection pipe 303 is fixedly installed on one side of the cylinder body 1. A first-pass pipe 304 is fixedly installed at one end of the suction pipe 302, and a second-pass pipe 305 is fixedly installed at one end of the gas injection pipe 303. A sliding column 306 is slidably installed inside both the second-pass pipe 305 and the first-pass pipe 304. A sealing plug 307 is fixedly installed at one end of the sliding column 306, and a support spring 308 is fixedly installed between the two sliding columns 306 and the first-pass pipe 304 and the second-pass pipe 305, respectively.

[0025] One end of the threaded handle 301 is rotatably mounted on the piston 2, causing the piston 2 to move up and down inside the cylinder 1 under the control of the threaded handle 301. The gas injection pipe 303 is located at the bottom of the cylinder 1, ensuring that the natural gas inside the cylinder 1 can be completely discharged. The sealing plug 307 on the slide 306 at the first access pipe 304 is adapted to the cylinder 1, and the sealing plug 307 on the slide 306 at the second access pipe 305 is adapted to the second access pipe 305. The two slides 306 are slidably mounted on the first access pipe 304 and the second access pipe 305 in opposite directions. When the threaded handle 301 is controlled to move the piston 2 upward along the cylinder 1, the slide 306 at the first access pipe 304, in conjunction with the sealing plug 307, will disengage from the extraction pipe 302 under the action of the piston 2, thereby allowing the natural gas to be discharged. Natural gas enters piston 2 through suction pipe 302. Since the sliding column 306 in the second passage pipe 305 is installed in reverse in the second passage pipe 305, external gas cannot enter the bottle body 1. When the control thread handle 301 moves piston 2 downward relative to the bottle body 1, the sliding column 306 in the second passage pipe 305 will cooperate with the sealing plug 307 to disengage from the second passage pipe 305 under the pressure of piston 2, thereby allowing natural gas to be discharged from the bottle body 1 for testing. Since the sliding column 306 in the first passage pipe 304 is installed in reverse in the first passage pipe 304, natural gas inside the bottle body 1 cannot be discharged through suction pipe 302. Before drawing in pure natural gas, repeatedly controlling piston 2 to move up and down can discharge the impurities inside the bottle body 1.

[0026] Example 2

[0027] See Figure 5 A connecting mechanism 4 is provided on the first pipe 304 and the second pipe 305. The connecting mechanism 4 includes an air extraction conduit 401 and an air injection conduit 402. The air extraction conduit 401 and the air injection conduit 402 are respectively sleeved on the first pipe 304 and the second pipe 305. Two pressure rings 403 are sleeved on both the air extraction conduit 401 and the air injection conduit 402. A stopper 404 is installed at one end of both the air extraction conduit 401 and the air injection conduit 402. Two sealing rings 405 are sleeved on the stopper 404 in parallel.

[0028] Both the first and second connecting pipes 304 and 305 are provided with annular protrusions, and the suction pipe 401 and the injection pipe 402 are adapted to the annular protrusions. The protrusions are used to increase the friction between the first and second connecting pipes 304 and 305 and the suction pipe 401 and the injection pipe 402, and at the same time facilitate the installation of the pressure ring 403. The stopper 404 is embedded in the suction pipe 401 and the injection pipe 402, and the sealing ring 405 is adapted to the suction pipe 401 and the injection pipe 402 respectively, so as to facilitate the sealing of the bottle 1 during transportation.

[0029] In actual operation, when the control screw handle 301 moves the piston 2 upward along the bottle body 1, the sliding column 306 at the first passage pipe 304 will cooperate with the sealing plug 307 to disengage from the suction pipe 302 under the action of the piston 2 drawing air, thereby allowing natural gas to enter the piston 2 from the suction pipe 302. Since the sliding column 306 in the second passage pipe 305 is installed in the opposite direction in the second passage pipe 305, external gas cannot enter the bottle body 1. Conversely, when the control screw handle 301 moves the piston 2 downward relative to the bottle body 1, natural gas will be discharged from the bottle body 1 for testing, and cannot be discharged through the suction pipe 302. Before drawing in natural gas, repeatedly controlling the piston 2 to move up and down can discharge the impurities inside the bottle body 1.

[0030] By installing a gas extraction conduit 401 and a gas injection conduit 402 on the first conduit 304 and the second conduit 305 respectively, and reinforcing the gas extraction conduit 401 and the gas injection conduit 402 with a pressure ring 403, and embedding a stopper 404 inside the gas extraction conduit 401 and the gas injection conduit 402, the stopper 404 can ensure the airtightness of the natural gas in the cylinder 1 during use, and the natural gas can be extracted or injected through the gas extraction conduit 401 and the gas injection conduit 402 after removing the stopper 404.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A natural gas component analysis sampling device, comprising a bottle body (1), wherein a piston (2) is slidably mounted inside the bottle body (1), characterized in that: The bottle body (1) is provided with a gas control mechanism (3); The gas control mechanism (3) includes a threaded handle (301), which is threaded onto the bottle body (1). A suction pipe (302) is fixedly installed at one end of the bottle body (1), and an injection pipe (303) is fixedly installed on one side of the bottle body (1). A first-stage pipe (304) is fixedly installed at one end of the suction pipe (302), and a second-stage pipe (305) is fixedly installed at one end of the injection pipe (303). A sliding column (306) is slidably installed inside both the second-stage pipe (305) and the first-stage pipe (304). A sealing plug (307) is fixedly installed at one end of the sliding column (306), and a support spring (308) is fixedly installed between each of the two sliding columns (306) and the first-stage pipe (304) and the second-stage pipe (305), respectively.

2. The natural gas component analysis sampling device according to claim 1, characterized in that: One end of the threaded shank (301) is rotatably mounted on the piston (2), and the gas injection pipe (303) is located at the bottom of the bottle body (1).

3. The natural gas component analysis sampling device according to claim 2, characterized in that: The sealing plug (307) on the slide (306) at the first tube (304) is adapted to the bottle body (1), and the sealing plug (307) on the slide (306) at the second tube (305) is adapted to the second tube (305).

4. A natural gas component analysis sampling device according to claim 3, characterized in that: The two sliding columns (306) are slidably mounted on the first through pipe (304) and the second through pipe (305) in opposite directions.

5. A natural gas component analysis sampling device according to claim 4, characterized in that: A connecting mechanism (4) is provided on the first pipe (304) and the second pipe (305). The connecting mechanism (4) includes a suction pipe (401) and an injection pipe (402). The suction pipe (401) and the injection pipe (402) are respectively sleeved on the first pipe (304) and the second pipe (305). Two pressure rings (403) are sleeved on both the suction pipe (401) and the injection pipe (402). A stopper (404) is installed at one end of both the suction pipe (401) and the injection pipe (402). Two sealing rings (405) are sleeved on the stopper (404) in parallel.

6. A natural gas component analysis sampling device according to claim 5, characterized in that: Both the first connecting pipe (304) and the second connecting pipe (305) are provided with annular protrusions, and both the air extraction conduit (401) and the air injection conduit (402) are adapted to the annular protrusions.

7. A natural gas component analysis sampling device according to claim 6, characterized in that: The stopper (404) is embedded in the air extraction conduit (401) and the air injection conduit (402), and the sealing ring (405) is adapted to the air extraction conduit (401) and the air injection conduit (402) respectively.

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