CN204422286U - The telescopic mounting of pressure pipeline gas sample - Google Patents

The telescopic mounting of pressure pipeline gas sample Download PDF

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Publication number
CN204422286U
CN204422286U CN201520123540.9U CN201520123540U CN204422286U CN 204422286 U CN204422286 U CN 204422286U CN 201520123540 U CN201520123540 U CN 201520123540U CN 204422286 U CN204422286 U CN 204422286U
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China
Prior art keywords
draw
tube
sleeve pipe
pressure pipeline
seal
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CN201520123540.9U
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Chinese (zh)
Inventor
毕慎平
官磊
张亚方
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Beijing Ao Shenglan Petro-Technology Services Co Ltd
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Beijing Ao Shenglan Petro-Technology Services Co Ltd
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Abstract

The utility model discloses a kind of telescopic mounting of pressure pipeline gas sample, comprise the draw-tube (2) that stretches into sampling in pressure pipeline and with pressure pipeline get the external device that gas interface connects, external device comprises the sleeve pipe (7) being enclosed within draw-tube (2) outer wall and the outer air pipe (4) being arranged on sleeve pipe (7) outside, communicating with gas in pressure pipeline; Outer air pipe (4) is provided with air intake valve (6); The outer wall of draw-tube (2) is fixed with piston (5), piston (5) and the outer wall of draw-tube (2), the inwall of sleeve pipe (7) and bore seal form seal cavity, seal cavity connects with air intake valve (6), and seal cavity is separately connected with venting valve (8); Seal cavity opposite side, the outer wall of piston (5) and draw-tube (2), the space that the inwall of sleeve pipe (7) is formed communicate with air.The utility model to gas automatic sampling in pressed gas conveying, can realize free adjustment to sampling depth.

Description

The telescopic mounting of pressure pipeline gas sample
Technical field
The utility model relates to pressed gas conveyance conduit technical field, is specially a kind of telescopic mounting of pressure pipeline gas sample.
Background technology
after natural gas extraction in course of conveying, need to carry out sampling and measuring to the quality of rock gas.The sampling major part of current natural gas is routine sampling, very loaded down with trivial details when diverse location point, different depth sampling in corresponding pipeline, needs to preset sampler length.Owing to needing to sample the gas of diverse location point in pipeline during practical operation, and existing market existing product all can not realize arbitrfary point sampling in natural gas line, therefore a kind of device that can carry out multidraw under the prerequisite not affecting Cemented filling to pipeline gas of the market demand.
Summary of the invention
The purpose of this utility model is to provide a kind of when not affecting normal pipeline conveying, rock gas in pipeline is carried out to the device of arbitrfary point sampling.The purpose of this utility model is achieved through the following technical solutions.
A kind of telescopic mounting of pressure pipeline gas sample, comprise the draw-tube that stretches into sampling in pressure pipeline and with pressure pipeline get the external device that gas interface connects, described external device comprises the sleeve pipe being enclosed within draw-tube outer wall and the outer air pipe being arranged on jacket exterior, communicating with gas in pressure pipeline; Described outer air pipe is provided with air intake valve; The outer wall of described draw-tube is fixed with piston, and the outer wall of piston and draw-tube, the inwall of sleeve pipe and bore seal form seal cavity, and described seal cavity connects with air intake valve, and described seal cavity is separately connected with venting valve; Described seal cavity opposite side, the space that piston is formed with the outer wall of draw-tube, the inwall of sleeve pipe communicates with air; In sampling process, portion gas enters seal cavity by outer air pipe and promotes piston and move along the inwall of sleeve pipe, is controlled the insertion depth of draw-tube by air intake valve.
Further, the surface of contact of described piston and draw-tube is provided with O-ring seal, and the surface of contact of piston and sleeve pipe is provided with O-ring seal.
Further, described air intake valve and venting valve are needle-valve.
Further, described outer air pipe and draw-tube are communicated with gas in pressure pipeline by same gas interface of getting.
Further, the front end of described sleeve pipe be provided with pressure pipeline get the front tab that gas interface is connected, the aperture of front tab is greater than draw-tube external diameter, front tab aperture inwall is provided with bulge loop, bulge loop and draw-tube seal and are socketed, and described front tab aperture is communicated with described outer air pipe with the gap of draw-tube outer wall.
Further, described front tab is connected with casing threads, and its joint face is provided with O-ring seal; The described bulge loop of front tab inwall and the surface of contact of draw-tube are provided with O-ring seal.
Further, described seal cavity is positioned at the rear end of described piston, the rear end of described sleeve pipe is provided with the rear tab as seal cavity bore seal, described rear tab and bobbin seal are socketed, described rear tab inwall is provided with bulge loop and draw-tube and seals and be socketed, and the bulge loop of rear tab inwall is connected with air intake valve and valve of exitting with the gap of the sleeve pipe mouth of pipe; The casing wall of described piston nose is provided with the exhausr port communicated with air.
Further, described rear tab is connected with casing threads, and its joint face is provided with O-ring seal; The surface of contact of described rear tab and draw-tube is provided with O-ring seal.
Further, described seal cavity is positioned at the front end of described piston, and the casing wall of described piston rear end is provided with the exhausr port communicated with air.
Further, the front end of described sleeve pipe be provided with pressure pipeline get the front tab that gas interface is connected, described front tab is as the bore seal of described seal cavity, the aperture of front tab is greater than draw-tube external diameter, front tab aperture inwall is provided with bulge loop, and bulge loop and draw-tube seal and be socketed, and its surface of contact is provided with O-ring seal, front tab is connected with casing threads, and its joint face is provided with O-ring seal.
The beneficial effects of the utility model are:
1, can on-line period, gas sample process is normally carried without any impact in pipeline;
2, the insertion pipeline stopple coupon degree of depth (in adjustable extent) can be regulated arbitrarily;
3, do not need separately to connect power source, utilize pipeline pressure itself can realize stretching out and retraction of draw-tube;
4, rational hermetically-sealed construction, can realize zero leakage under 16MPa.
5, the utility model is simple and compact for structure, is convenient for carrying.
Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation (seal cavity is positioned at piston rear end);
Fig. 2 is the utility model structural representation (seal cavity is positioned at piston nose);
Fig. 3 is the utility model using state schematic diagram.
reference numeral is:
1. front tab; 2. draw-tube; 3. rear tab; 4. outer air pipe; 5. piston; 6. air intake valve; 7. sleeve pipe; 8. venting valve; 9. exhausr port; 10. the O-ring seal between front tab and draw-tube; O-ring seal between 11. front tab and sleeve pipe; O-ring seal between 12. pistons and draw-tube; O-ring seal between 13. pistons and sleeve pipe; O-ring seal between 14. rear tab and sleeve pipe; O-ring seal between 15. rear tab and draw-tube; 16. ball valves.
Embodiment
Embodiment 1
A kind of telescopic mounting of pressure pipeline gas sample, comprise the draw-tube 2 that stretches into sampling in pressure pipeline and with pressure pipeline get the external device that gas interface connects, described external device comprises the sleeve pipe 7 that is enclosed within draw-tube 2 outer wall and is arranged on the outer air pipe 4 that sleeve pipe 7 is outside, communicate with gas in pressure pipeline; Described outer air pipe 4 is provided with air intake valve 6; The outer wall of described draw-tube 2 is fixed with piston 5, and piston 5 and the outer wall of draw-tube 2, the inwall of sleeve pipe 7 and bore seal form seal cavity, and described seal cavity connects with air intake valve 6, and described seal cavity is separately connected with venting valve 8; Described seal cavity opposite side, the space that piston 5 is formed with the outer wall of draw-tube 2, the inwall of sleeve pipe 7 communicates with air; In sampling process, portion gas enters seal cavity by outer air pipe 4 and promotes piston 5 and move along the inwall of sleeve pipe 7, is controlled the insertion depth of draw-tube 2 by air intake valve 6.Described piston 5 is provided with O-ring seal with the surface of contact of draw-tube 2, and piston 5 is provided with O-ring seal with the surface of contact of sleeve pipe 7.Described air intake valve 6 and venting valve 8 are needle-valve.Described draw-tube 2 is provided with scale, is convenient to observe insertion depth.
Described outer air pipe 4 and draw-tube 2 are communicated with gas in pressure pipeline by same gas interface of getting.
The front end of described sleeve pipe 7 be provided with pressure pipeline get the front tab 1 that gas interface is connected, the aperture of front tab 1 is greater than draw-tube 2 external diameter, front tab 1 aperture inwall is provided with bulge loop, bulge loop and draw-tube 2 seal and are socketed, and described front tab 1 aperture is communicated with described outer air pipe 4 with the gap of draw-tube 2 outer wall.Described front tab 1 is threaded with sleeve pipe 7, and its joint face is provided with O-ring seal; The described bulge loop of front tab 1 inwall and the surface of contact of draw-tube 2 are provided with O-ring seal.
Described seal cavity is positioned at the rear end (as shown in Figure 1) of described piston 5, the rear end of described sleeve pipe 7 is provided with the rear tab 3 as seal cavity bore seal, described rear tab 3 seals with sleeve pipe 7 and is socketed, described rear tab 3 inwall is provided with bulge loop and draw-tube 2 and seals and be socketed, and the bulge loop of rear tab 3 inwall is connected with air intake valve 6 and valve 8 of exitting with the gap of sleeve pipe 7 mouth of pipe; Sleeve pipe 7 wall of described piston 5 front end is provided with the exhausr port 9 communicated with air.Described rear tab 3 is threaded with sleeve pipe 7, and its joint face is provided with O-ring seal; Described rear tab 3 is provided with O-ring seal with the surface of contact of draw-tube 2.
Multi-sealing structure defines the seal cavity of seal cavity between piston 5, coupling 3 and sleeve pipe 7 inwall, draw-tube 2 outer wall and outer air pipe 4, and pipeline pressure can be utilized automatically to regulate sampling depth.
Pressure pipeline inwall is previously provided with thief hole and ball valve 16(as shown in Figure 3), when preparing sampling, the front tab 1 of sampler be connected with described ball valve 16, the external diameter of junction front tab 1 is less than the external diameter of ball valve 16.When starting to sample, gas sampled enters in draw-tube 2; Air intake valve 6 is opened, venting valve 8 is closed, a part of pressure gas cognition in pipeline enters outer air pipe 4 along the direction of arrow thus enters seal cavity, promote piston 5 forward end to move, because piston 5 is fixedly connected with draw-tube 2, so drive draw-tube 2 forward end to move, forward end gas is discharged by exhausr port 9; The sampling depth that arriving needs closes air intake valve 6, and namely draw-tube stops mobile; After having sampled, close air intake valve 6, opened by venting valve 8, pipeline pressure gas acts on draw-tube 2, communicates with air simultaneously, and gas is released by venting valve 8, and draw-tube 2 exits from pressure pipeline.
Embodiment 2
The basis of embodiment 1 changes to some extent, and difference is the position of seal cavity.
Described seal cavity is positioned at the front end (as shown in Figure 2) of described piston 5, and sleeve pipe 7 wall of described piston 5 rear end is provided with the exhausr port 9 communicated with air.The front end of described sleeve pipe 7 be provided with pressure pipeline get the front tab 1 that gas interface is connected, described front tab 1 is as the bore seal of described seal cavity, the aperture of front tab 1 is greater than draw-tube 2 external diameter, front tab 1 aperture inwall is provided with bulge loop, bulge loop and draw-tube 2 seal and are socketed, its surface of contact is provided with O-ring seal, and front tab 1 is threaded with sleeve pipe 7, and its joint face is provided with O-ring seal.
Pressure pipeline inwall is previously provided with thief hole and ball valve 16, when preparing sampling, the front tab 1 of sampler is connected with described ball valve 16.When starting to sample, first draw-tube 2 is inserted pipeline bosom, gas sampled enters in draw-tube 2; Air intake valve 6 is opened, venting valve 8 is closed, a part of pressure gas cognition in pipeline enters outer air pipe 4 along the direction of arrow thus enters seal cavity, promote piston 5 to move to the back-end, because piston 5 is fixedly connected with draw-tube 2, so drive draw-tube 2 to move to the back-end, backend gas is discharged by exhausr port 9; The sampling depth that arriving needs closes air intake valve 6, and namely draw-tube stops mobile; After having sampled, close air intake valve 6, opened by venting valve 8, pipeline pressure gas acts on draw-tube 2, communicates with air simultaneously, and gas is released by venting valve 8, and draw-tube 2 exits from pressure pipeline.
Embodiment 3
The basis of embodiment 1 changes to some extent, and difference is and the annexation of getting gas interface.
Described outer air pipe 4 and draw-tube 2 are got gas interface by difference and are communicated with gas in pressure pipeline.
Pressure pipeline outer wall is provided with sample tap and outer atmospheric pressure mouth simultaneously, and the draw-tube 2 of sampler inserts in sample tap, and outer air pipe 4 connects with outer atmospheric pressure mouth.
The utility model can carry out automatic sampling to gas in pipelines in pressed gas conveyance conduit course of conveying, sampler insertion depth is maximum reaches 200MM, in sampling process, insertion depth according to circumstances can think adjustment automatically, and do not affect normal sampling, can in pipeline within the scope of 0 ~ 200MM arbitrfary point sample, utilize manifold pressure use needle-valve regulate.The utility model not only solves arbitrfary point problem of sampling, and does not need external connection power, utilizes manifold pressure can realize stretching out and retraction of expansion link.

Claims (10)

1. the telescopic mounting of a pressure pipeline gas sample, comprise the draw-tube (2) that stretches into sampling in pressure pipeline and with pressure pipeline get the external device that gas interface connects, it is characterized in that: described external device comprises the sleeve pipe (7) being enclosed within draw-tube (2) outer wall and the outer air pipe (4) being arranged on sleeve pipe (7) outside, communicating with gas in pressure pipeline; Described outer air pipe (4) is provided with air intake valve (6); The outer wall of described draw-tube (2) is fixed with piston (5), piston (5) and the outer wall of draw-tube (2), the inwall of sleeve pipe (7) and bore seal form seal cavity, described seal cavity connects with air intake valve (6), and described seal cavity is separately connected with venting valve (8); Described seal cavity opposite side, the outer wall of piston (5) and draw-tube (2), the space that the inwall of sleeve pipe (7) is formed communicate with air; In sampling process, portion gas enters seal cavity by outer air pipe (4) and promotes piston (5) and move along the inwall of sleeve pipe (7), is controlled the insertion depth of draw-tube (2) by air intake valve (6).
2. the telescopic mounting of pressure pipeline gas sample according to claim 1, is characterized in that, described piston (5) is provided with O-ring seal with the surface of contact of draw-tube (2), and piston (5) is provided with O-ring seal with the surface of contact of sleeve pipe (7).
3. the telescopic mounting of pressure pipeline gas sample according to claim 1, is characterized in that, described air intake valve (6) and venting valve (8) are needle-valve.
4. the telescopic mounting of pressure pipeline gas sample according to claim 1, is characterized in that, described outer air pipe (4) and draw-tube (2) are communicated with gas in pressure pipeline by same gas interface of getting.
5. the telescopic mounting of pressure pipeline gas sample according to claim 4, it is characterized in that, the front end of described sleeve pipe (7) be provided with pressure pipeline get the front tab (1) that gas interface is connected, the aperture of front tab (1) is greater than draw-tube (2) external diameter, front tab (1) aperture inwall is provided with bulge loop, bulge loop and draw-tube (2) seal and are socketed, and described front tab (1) aperture is communicated with described outer air pipe (4) with the gap of draw-tube (2) outer wall.
6. the telescopic mounting of pressure pipeline gas sample according to claim 5, is characterized in that, described front tab (1) is threaded with sleeve pipe (7), and its joint face is provided with O-ring seal; The bulge loop of described front tab (1) inwall and the surface of contact of draw-tube (2) are provided with O-ring seal.
7. according to the telescopic mounting of the pressure pipeline gas sample in claim 1 ~ 6 described in any one, it is characterized in that, described seal cavity is positioned at the rear end of described piston (5), the rear end of described sleeve pipe (7) is provided with the rear tab (3) as seal cavity bore seal, described rear tab (3) and sleeve pipe (7) seal and are socketed, described rear tab (3) inwall is provided with bulge loop and draw-tube (2) and seals and be socketed, and the bulge loop of rear tab (3) inwall is connected with air intake valve (6) and valve (8) of exitting with the gap of sleeve pipe (7) mouth of pipe; Sleeve pipe (7) wall of described piston (5) front end is provided with the exhausr port (9) communicated with air.
8. the telescopic mounting of pressure pipeline gas sample according to claim 7, is characterized in that, described rear tab (3) is threaded with sleeve pipe (7), and its joint face is provided with O-ring seal; Described rear tab (3) is provided with O-ring seal with the surface of contact of draw-tube (2).
9. according to the telescopic mounting of the pressure pipeline gas sample in claim 1 ~ 6 described in any one, it is characterized in that, described seal cavity is positioned at the front end of described piston (5), and sleeve pipe (7) wall of described piston (5) rear end is provided with the exhausr port (9) communicated with air.
10. the telescopic mounting of pressure pipeline gas sample according to claim 9, it is characterized in that: the front end of described sleeve pipe (7) be provided with pressure pipeline get the front tab (1) that gas interface is connected, described front tab (1) is as the bore seal of described seal cavity, the aperture of front tab (1) is greater than draw-tube (2) external diameter, front tab (1) aperture inwall is provided with bulge loop, bulge loop and draw-tube (2) seal and are socketed, its surface of contact is provided with O-ring seal, front tab (1) is threaded with sleeve pipe (7), its joint face is provided with O-ring seal.
CN201520123540.9U 2015-03-04 2015-03-04 The telescopic mounting of pressure pipeline gas sample Active CN204422286U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134947A (en) * 2015-08-17 2015-12-09 中国重型机械研究院股份公司 Bimetal-composite-pipe liquid expansion forming base-pipe and liner-pipe gap waterproof device
CN106248490A (en) * 2016-07-20 2016-12-21 中冶建工集团有限公司 A kind of pressure pipeline Quick-action pressure-testing joint and pressure-measuring method
CN108287069A (en) * 2018-03-19 2018-07-17 华电电力科学研究院有限公司 One kind surveying the fixed attachment device of mouth and connection method for backing tube and experiment
CN110342197A (en) * 2019-06-18 2019-10-18 中国科学技术大学 Online solid feeding device and the method for fetching using it
CN114199638A (en) * 2021-10-25 2022-03-18 上海凌逐新能源科技有限公司 Be used for wind tunnel formula hydrogen fuel cell environmental chamber hydrogen concentration sampler

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134947A (en) * 2015-08-17 2015-12-09 中国重型机械研究院股份公司 Bimetal-composite-pipe liquid expansion forming base-pipe and liner-pipe gap waterproof device
CN106248490A (en) * 2016-07-20 2016-12-21 中冶建工集团有限公司 A kind of pressure pipeline Quick-action pressure-testing joint and pressure-measuring method
CN108287069A (en) * 2018-03-19 2018-07-17 华电电力科学研究院有限公司 One kind surveying the fixed attachment device of mouth and connection method for backing tube and experiment
CN108287069B (en) * 2018-03-19 2023-06-20 华电电力科学研究院有限公司 Connecting device and connecting method for fixing backrest tube and test port
CN110342197A (en) * 2019-06-18 2019-10-18 中国科学技术大学 Online solid feeding device and the method for fetching using it
CN114199638A (en) * 2021-10-25 2022-03-18 上海凌逐新能源科技有限公司 Be used for wind tunnel formula hydrogen fuel cell environmental chamber hydrogen concentration sampler
CN114199638B (en) * 2021-10-25 2023-11-14 上海凌逐新能源科技有限公司 Hydrogen concentration sampler for environmental chamber of wind tunnel type hydrogen fuel cell

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