CN108663239B - Natural gas pipeline sampling device - Google Patents
Natural gas pipeline sampling device Download PDFInfo
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- CN108663239B CN108663239B CN201810611363.7A CN201810611363A CN108663239B CN 108663239 B CN108663239 B CN 108663239B CN 201810611363 A CN201810611363 A CN 201810611363A CN 108663239 B CN108663239 B CN 108663239B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
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Abstract
The invention discloses a natural gas pipeline sampling device which comprises a sampling device arranged on a natural gas pipeline, wherein a sunken annular cavity is formed in the natural gas pipeline, the sampling device seals the whole annular cavity, a small gas outlet hole is formed in the bottom surface of the annular cavity, and the gas inlet end of the small gas outlet hole is communicated with a gas transmission channel in the natural gas pipeline; the sampling device comprises a rotating ring, a rotating cavity is arranged in the middle of the rotating ring, the inner wall of the rotating cavity is in sealing contact with the bottom surface of the annular cavity, the outer wall of the rotating ring protrudes out of the natural gas pipeline, more than one sampling hole is arranged on one side of the protruding end of the rotating ring around the rotating ring, a sampling pipe is arranged in each sampling hole, and the sampling pipes are communicated with the gas transmission channel through an outlet pipe. The invention has simple structure, can realize quick sealed sampling by adopting a very simple rotating structure, has simple operation in the whole process, is safer to use, and can not generate the situations of air leakage and the like.
Description
Technical Field
The invention relates to the field of natural gas, in particular to a natural gas pipeline sampling device.
Background
Natural gas pipelines are pipelines, also called gas pipelines, for transporting natural gas (including associated gas produced by oil fields) from an exploitation place or a processing plant to a city gas distribution center or an industrial enterprise user; the natural gas pipeline is used for conveying natural gas, and is the only way for conveying natural gas on land in large quantities. In the process of conveying natural gas by a natural gas pipeline, conveying substances in the pipeline need to be detected regularly, and in the process of taking out the natural gas pipeline, leakage of the pipeline is easy to occur, so that danger is caused, and therefore a special sampling valve is needed to be matched, so that the normal operation of the pipeline is not influenced, the safety of detection personnel is guaranteed, and natural gas resources are not wasted and the environment is not polluted; the existing sampling device has a complex structure, is inconvenient to operate, consumes a large amount of time for each operation, is unsafe in operation process and has the possibility of air leakage.
Disclosure of Invention
The invention aims to solve the technical problem of providing a natural gas pipeline sampling device, which overturns the traditional sampling mode, adopts rotary sampling, is simple to operate and has no danger, greatly improves the efficiency and simplifies the whole structure.
The invention is realized by the following technical scheme: a natural gas pipeline sampling device comprises a sampling device arranged on a natural gas pipeline, wherein a sunken annular cavity is formed in the natural gas pipeline, the sampling device seals the whole annular cavity, an air outlet small hole is formed in the bottom surface of the annular cavity, and the air inlet end of the air outlet small hole is communicated with an air transmission channel in the natural gas pipeline;
the sampling device comprises a rotating ring, a rotating cavity is arranged in the middle of the rotating ring, the inner wall of the rotating cavity is in sealing contact with the bottom surface of the annular cavity, the outer wall of the rotating ring protrudes out of the natural gas pipeline, more than one sampling hole is arranged on one side of the protruding end of the rotating ring around the rotating ring, a sampling pipe is arranged in each sampling hole, and the sampling pipes are communicated with the gas transmission channel through an outlet pipe.
As preferred technical scheme, the sampling tube includes a sealed body, connector, connecting pipe and a pneumatic check valve, pneumatic check valve installs on the connecting pipe, and the connecting pipe is installed on the connector, connector and sealed body threaded connection assembly, and the bottom surface of thief hole sets up an outlet duct, the outlet duct inserts and seals in the inlet channel of connecting pipe, the inlet end of outlet duct inserts in an inlet aperture, and one side of every thief hole all is provided with an inlet aperture.
As preferred technical scheme, the outer wall parcel round silica gel sealing ring of connector, the whole thief hole of silica gel sealing ring seal, and the sealed body one end of thief tube stretches out in the outside of thief hole.
As the preferred technical scheme, a sealing piece is arranged between the sampling tube and the bottom surface of the sampling hole, and the sealing piece seals the sampling hole.
According to a preferable technical scheme, the sealing sheet is annular, the outer wall of the sealing sheet is wrapped by a layer of sealing layer, the outer wall of the sealing sheet is in contact sealing with the inner wall of the sampling hole, a pipe hole is formed in the middle of the sealing sheet, and the connecting pipe of the sampling pipe penetrates through the pipe hole to be connected and communicated with the air outlet pipe.
As a preferred technical scheme, two semicircular air bag cushions are arranged in the middle of the pipe hole, opposite surfaces of the two air bag cushions are in contact sealing with each other, the whole air bag cushion is made of elastic rubber materials, and air is filled in the whole air bag cushion.
As the preferred technical scheme, a circle of limiting stop ring is arranged in the sampling hole and close to the bottom surface of the sampling hole.
As a preferred technical scheme, two sides of the annular cavity are respectively embedded with an annular sealing ring, and two sides of the rotating ring are in contact sealing with the annular sealing rings.
According to the preferable technical scheme, a metal elastic shifting piece is arranged at the top of the natural gas pipeline, a circle of positioning grooves are formed in the other side of the rotating ring, which faces the metal elastic shifting piece, each positioning groove faces a sampling box, and one end of the metal elastic shifting piece is buckled into the positioning groove.
The invention has the beneficial effects that: the invention has simple structure, can realize quick sealed sampling by adopting a very simple rotating structure, has simple operation in the whole process, is safer to use, and can not generate the situations of air leakage and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an external structural view of the present invention;
FIG. 2 is a schematic internal cross-sectional view of the present invention;
FIG. 3 is a schematic view of the construction of the coupon of the present invention;
FIG. 4 is a side view of the present invention with the coupon not installed;
FIG. 5 is a side view of the coupon of FIG. 4 after installation;
FIG. 6 is a schematic view of the sealing sheet structure.
The codes in the figure are respectively: 1 is the rotating ring, 2 is the connector, 3 is the sealed body, 4 is natural gas line, 5 is the thief hole, 6 is metal elasticity plectrum, 7 is the gas transmission passageway, 8 is the aperture of giving vent to anger, 9 is the aperture of admitting air, 11 is the outlet duct, 12 is ring packing, 13 is the gasket, 14 is the spacing fender ring, 15 is the silica gel sealing ring, 16 is the horn mouth, 17 is the connecting pipe, 18 is pneumatic check valve, 22 is the gasbag pad.
Detailed Description
As shown in fig. 1 and 2, the natural gas pipeline sampling device comprises a sampling device installed on a natural gas pipeline 4, wherein a concave annular cavity is formed in the natural gas pipeline 4, the sampling device seals the whole annular cavity, a small air outlet hole 8 is formed in the bottom surface of the annular cavity, and the air inlet end of the small air outlet hole 8 is communicated with an air conveying channel 7 in the natural gas pipeline 4;
as shown in fig. 2, the sampling device comprises a rotating ring 1, a rotating cavity is arranged in the middle of the rotating ring 1, the inner wall of the rotating cavity is in sealing contact with the bottom surface of the annular cavity, the outer wall of the rotating ring 1 protrudes out of the natural gas pipeline 4, more than one sampling hole 5 is arranged on one side of the protruding end of the rotating ring 1 around the rotating ring 1, a sampling tube is arranged in each sampling hole 5, and the sampling tube is communicated with the gas transmission channel 7 through an air outlet tube 11.
As shown in fig. 3, the sampling tube includes a sealed tube body 3, connector 2, connecting pipe 17 and a pneumatic check valve 18, pneumatic check valve 18 is installed on connecting pipe 17, connecting pipe 17 is installed on connector 2, connector 2 and the assembly of 3 threaded connection of sealed tube body, the bottom surface of sampling hole 5 sets up an outlet duct 11, outlet duct 11 inserts and seals in the inlet channel of connecting pipe 17, the inlet end of outlet duct 11 inserts in an inlet aperture 9, one side of every sampling hole 5 all is provided with an inlet aperture 9.
The inlet aperture 9 of every sampling hole 5 is with the aperture dislocation set of giving vent to anger when not taking a sample, consequently, it is sealed to misplace each other, only when needs sample, rotate whole swivel ring, make the inlet aperture that is closest to the aperture side of giving vent to anger communicate with its butt joint, can pass the outlet aperture with the natural gas in the gas transmission passageway and the inlet aperture enters into the sealed tube body of sampling tube from the outlet duct discharge, because sealed tube body has established pneumatic check valve certainly, consequently, the gas reflux condition can not appear, after the sample is accomplished, the swivel ring misplaces again, make inlet aperture and outlet aperture dislocation can seal and block giving vent to anger, the sampling tube that the sample was accomplished can be pulled out to this moment, whole process only needs rotatory swivel ring can, very simple, and safety.
The outer wall parcel round silica gel sealing ring 15 of connector 2, whole thief hole 5 of silica gel sealing ring 15 seal, and 3 one ends of the sealed body of thief tube stretch out in the outside of thief hole 5. The sampling tube seals the whole sampling hole 5 through the connector 2, so that the whole sealing performance is ensured, the position of the whole sampling tube is also ensured not to be moved, the sampling tube is not arranged between the sampling tubes as shown in figure 4, more than one sampling hole is reserved, and therefore, sealed sampling can be realized only by inserting a clean sampling tube as shown in figure 5.
In order to ensure the sealing performance of the whole sampling hole after the sampling tube is pulled out, a sealing sheet 13 is specially installed between the sampling tube and the bottom surface of the sampling hole, as shown in fig. 6, the sealing sheet 13 seals the sampling hole 5, the sealing sheet 13 is annular, the outer wall of the sealing sheet is wrapped by a layer of sealing layer, the outer wall of the sealing sheet is in contact sealing with the inner wall of the sampling hole, a tube hole is formed in the middle of the sealing sheet, a connecting tube of the sampling tube penetrates through the tube hole to be connected and conducted with an air outlet tube, two semicircular air bag cushions 22 are arranged in the middle of the tube hole, opposite surfaces of the two air bag cushions 22 are in contact sealing mutually, the whole air bag cushion 22 is made of elastic rubber materials, gas is filled in the air bag, and.
Wherein, be close to the thief hole bottom surface in the thief hole 5 and be provided with round spacing fender ring 14, the main function that sets up spacing fender ring 14 is after the thief tube inserts the thief hole, inserts the thief tube to the position that spacing kept off ring 14, just can guarantee that the outlet duct can insert in the connecting pipe, keeps connecting and switches on to this is as a benchmark, and in order to insert, can set the air inlet end of connecting pipe into horn mouth 16, makes things convenient for inserting of outlet duct 11.
In this embodiment, an annular sealing ring 12 is embedded into each of two sides of the annular cavity, and two sides of the rotating ring are in contact with and sealed with the annular sealing ring 12, so that the sealing performance of the rotating ring in the rotating process is improved.
Wherein, the top of the natural gas pipeline 4 is provided with a metal elastic shifting sheet 6, the other side of the rotating ring 1 is provided with a circle of positioning grooves (not shown) opposite to the metal elastic shifting sheet, each positioning groove is opposite to a sampling box, and one end of the metal elastic shifting sheet 6 is buckled in the positioning groove. The metal elastic shifting piece is arranged to serve as a limit, so that when the metal elastic shifting piece is buckled into the positioning groove, the small air outlet hole and the small air inlet hole can be just conducted, and positioning is facilitated.
The invention has the beneficial effects that: the invention has simple structure, can realize quick sealed sampling by adopting a very simple rotating structure, has simple operation in the whole process, is safer to use, and can not generate the situations of air leakage and the like.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (2)
1. The utility model provides a natural gas line sampling device which characterized in that: the sampling device is arranged on a natural gas pipeline, a sunken annular cavity is formed in the natural gas pipeline, the sampling device seals the whole annular cavity, an air outlet small hole is formed in the bottom surface of the annular cavity, and the air inlet end of the air outlet small hole is communicated with an air transmission channel in the natural gas pipeline;
the sampling device comprises a rotating ring, a rotating cavity is arranged in the middle of the rotating ring, the inner wall of the rotating cavity is in sealing contact with the bottom surface of the annular cavity, the outer wall of the rotating ring protrudes out of the natural gas pipeline, more than one sampling hole is arranged on one side of the protruding end of the rotating ring around the rotating ring, a sampling pipe is arranged in each sampling hole, and the sampling pipe is communicated with the gas transmission channel through a gas outlet pipe;
the sampling tube comprises a sealing tube body, a connector, a connecting tube and a pneumatic one-way valve, the pneumatic one-way valve is arranged on the connecting tube, the connecting tube is arranged on the connector, the connector is in threaded connection with the sealing tube body for assembly, the bottom surface of the sampling hole is provided with an air outlet tube, the air outlet tube is inserted into an air inlet channel of the connecting tube and sealed, the air inlet end of the air outlet tube is inserted into an air inlet small hole, and one side of each sampling hole is provided with an air inlet small hole;
the outer wall of the connector is wrapped by a circle of silica gel sealing ring, the whole sampling hole is sealed by the silica gel sealing ring, and one end of a sealing tube body of the sampling tube extends out of the sampling hole;
a sealing sheet is arranged between the sampling tube and the bottom surface of the sampling hole, and the sealing sheet seals the sampling hole;
the sealing piece is annular, the outer wall of the sealing piece is wrapped by a sealing layer, the outer wall of the sealing piece is in contact sealing with the inner wall of the sampling hole, a pipe hole is formed in the middle of the sealing piece, and a connecting pipe of the sampling pipe penetrates through the pipe hole to be connected and communicated with the air outlet pipe;
two semicircular air bag cushions are arranged in the middle of the pipe hole, opposite surfaces of the two air bag cushions are in contact sealing with each other, the whole air bag cushion is made of elastic rubber materials, and gas is filled in the whole air bag cushion;
a circle of limiting stop ring is arranged in the sampling hole and close to the bottom surface of the sampling hole;
and two sides of the annular cavity are respectively embedded with an annular sealing ring, and two sides of the rotating ring are in contact sealing with the annular sealing rings.
2. The natural gas pipeline sampling device of claim 1, wherein: the top of the natural gas pipeline is provided with a metal elastic shifting piece, the other side of the rotating ring is provided with a circle of positioning grooves facing the metal elastic shifting piece, each positioning groove faces a sampling box, and one end of the metal elastic shifting piece is buckled in the positioning groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810611363.7A CN108663239B (en) | 2018-06-14 | 2018-06-14 | Natural gas pipeline sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810611363.7A CN108663239B (en) | 2018-06-14 | 2018-06-14 | Natural gas pipeline sampling device |
Publications (2)
| Publication Number | Publication Date |
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| CN108663239A CN108663239A (en) | 2018-10-16 |
| CN108663239B true CN108663239B (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810611363.7A Active CN108663239B (en) | 2018-06-14 | 2018-06-14 | Natural gas pipeline sampling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112593933B (en) * | 2020-12-26 | 2023-03-24 | 华油天然气广元有限公司 | Coupling mechanism for natural gas sampling |
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| US4880120A (en) * | 1987-09-02 | 1989-11-14 | The Coca-Cola Company | Plastic container inspection process |
| US6769316B2 (en) * | 2002-06-21 | 2004-08-03 | Rupprecht & Patashnick Company, Inc. | Sampling cartridge for gas sampling apparatus |
| US8266945B2 (en) * | 2008-07-21 | 2012-09-18 | Bryn Hartshorne | Device for removing air dispersed contaminants |
| CN202204709U (en) * | 2011-06-16 | 2012-04-25 | 深圳国技仪器有限公司 | Full-automatic multi-channel gas path switching atmospheric sampling device |
| CN202305280U (en) * | 2011-09-02 | 2012-07-04 | 邯钢集团邯宝钢铁有限公司 | Fuel gas sampling device |
| CN103463719B (en) * | 2013-09-30 | 2016-11-09 | 肖金仿 | A kind of endotracheal tube complete built-in laryngeal mask associating breather |
| CN104747809B (en) * | 2015-04-22 | 2017-04-05 | 国家电网公司 | Smoke sampling sealing device |
| CN204556337U (en) * | 2015-04-23 | 2015-08-12 | 哈尔滨工程大学 | Flue gas multidraw device |
| CN205014056U (en) * | 2015-09-28 | 2016-02-03 | 陕西省天然气股份有限公司 | Natural gas line equipment |
| CN205449591U (en) * | 2016-04-08 | 2016-08-10 | 四川国泰民安科技有限公司 | Transfer device is collected to gas aspect article |
| EP3232180B1 (en) * | 2016-04-15 | 2018-01-31 | Sick Ag | Device for optically in-situ gas analysis |
| CN106018002A (en) * | 2016-05-17 | 2016-10-12 | 南京友智科技有限公司 | Matrix type mixed constant-speed sampling device |
| CN206362594U (en) * | 2016-12-09 | 2017-07-28 | 青岛和诚环保科技有限公司 | A kind of rotating disc type multichannel air granule sampler |
| CN108051259B (en) * | 2017-11-01 | 2019-07-30 | 浙江浩普环保工程有限公司 | Built-in movable type pollutant sampling apparatus |
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Effective date of registration: 20200708 Address after: 322105 Zhejiang city of Jinhua province Dongyang City Song Town sokdam Village No. 1 Applicant after: DONGYANG XINYI INDUSTRIAL PRODUCT DESIGN Co.,Ltd. Address before: Hengdian Town, Zhejiang city of Jinhua province Dongyang 322118 Bridge City Community peaks No. 47 Applicant before: Zhang Lisheng |
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Effective date of registration: 20230228 Address after: 4 Cedar Road No. 450001, hi tech Industrial Development Zone, Henan, Zhengzhou Patentee after: CENSTAR SCIENCE & TECHNOLOGY Corp.,Ltd. Address before: 322105 No. 1, Shi Tan Village, Ge Shan town, Dongyang, Jinhua, Zhejiang Patentee before: DONGYANG XINYI INDUSTRIAL PRODUCT DESIGN Co.,Ltd. |
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