CN210136114U - Sampling device of natural gas pipeline - Google Patents
Sampling device of natural gas pipeline Download PDFInfo
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- CN210136114U CN210136114U CN201921051758.2U CN201921051758U CN210136114U CN 210136114 U CN210136114 U CN 210136114U CN 201921051758 U CN201921051758 U CN 201921051758U CN 210136114 U CN210136114 U CN 210136114U
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Abstract
The utility model discloses a sampling device of a natural gas pipeline, which comprises a natural gas pipeline, wherein a gas-leading pipe which penetrates through the natural gas pipeline is arranged on the pipe wall of the natural gas pipeline, the gas-leading pipe is vertically arranged, one end of the gas-leading pipe extends downwards towards the inside of the natural gas pipeline, the other end of the gas-leading pipe protrudes upwards, the top end of the gas-leading pipe is sealed, the bottom end of the gas-leading pipe is open, the part of the gas-leading pipe protruding upwards is communicated with a gas pipe, the gas pipe is horizontally arranged, and the; the air guide pipe is provided with a one-way valve I, and the air delivery pipe is provided with a one-way valve II; the top end of the gas storage box is provided with a sample outlet pipe, the sample outlet pipe is provided with a check valve, and the sample outlet pipe is provided with a sealing cover for sealing or opening; the top end of the air-entraining pipe is provided with an air bag. The utility model discloses utilize the gasbag to extrude the gas of bleed pipe to natural gas line and replace, can prove the sample for the real-time gas in the natural gas line, the utility model discloses the accuracy is high, the security is strong, sample efficiently.
Description
Technical Field
The utility model belongs to the technical field of the natural gas line, concretely relates to natural gas line's sampling device.
Background
Index analysis of components, concentrations and the like of natural gas is a common and effective means for monitoring the quality of the natural gas, and for real-time and accurate monitoring, the natural gas conveyed in a pipeline needs to be sampled. If directly follow the natural gas line with the sampling container in the sample, then must be used for inserting with the sampling container at natural gas line upper shed, cause the natural gas to leak very easily, unsafe coefficient is too high, so need install transition system on the natural gas line and be used for with the sampling container intercommunication as sampling device, and then take the natural gas safely, but present natural gas sampling device is as transition system, must remain certain natural gas for the sample can't go on in real time, current natural gas sampling device has the structure complicacy in addition, the operation is difficult, sample shortcoming such as inaccuracy.
SUMMERY OF THE UTILITY MODEL
To not enough and a difficult problem among the prior art, the utility model aims at providing a natural gas line's sampling device.
The utility model discloses a following technical scheme realizes:
a sampling device of a natural gas pipeline comprises the natural gas pipeline, wherein a gas guide pipe penetrating through the natural gas pipeline is arranged on the wall of the natural gas pipeline, the gas guide pipe is vertically arranged, one end of the gas guide pipe extends downwards towards the inside of the natural gas pipeline, the other end of the gas guide pipe protrudes upwards, the top end of the gas guide pipe is a seal, the bottom end of the gas guide pipe is an opening, the part, protruding upwards, of the gas guide pipe is communicated with a gas transmission pipe, the gas transmission pipe is horizontally arranged, and the other end of the; the air guide pipe is provided with a one-way valve I, and the air delivery pipe is provided with a one-way valve II; the top end of the gas storage box is provided with a sample outlet pipe, the sample outlet pipe is provided with a check valve for preventing gas from flowing backwards, and the sample outlet pipe is provided with a sealing cover for sealing or opening; the top end of the air-entraining pipe is provided with an air bag.
Further, the check valve I is arranged at the position of the air guide pipe area above the air conveying pipe, namely the check valve I is positioned between the top end of the air guide pipe and the air conveying pipe.
The gas pipeline protection device further comprises a protection cover, the protection cover is fixed on the outer wall of the natural gas pipeline, the protection cover covers the outer convex part of the gas guide pipe, the gas pipe and the air bag, and a sliding door is arranged at the top end of the protection cover.
Further, the tail end of the bleed air pipe is flush with the central axis of the natural gas pipeline.
Furthermore, the position, close to the tail end, of the air guide pipe is provided with an inclined trimming edge, so that the tail end of the air guide pipe is provided with an inclined opening at the side edge, and the inclined opening direction of the inclined opening is over against the natural gas flowing direction.
Furthermore, a sealing ring is arranged at the joint of the air guide pipe and the outer wall of the natural gas pipeline.
Compared with the prior art, the utility model discloses beneficial effect includes:
(1) the utility model adopts the air-entraining pipe, the air conveying pipe and the air storage box which are connected in sequence to arrange the air bag at the top end of the air-entraining pipe, before the sampling operation, the air bag can be utilized to extrude the gas of the air-entraining pipe to the natural gas pipeline for replacement, thus ensuring the sampling to be the real-time gas in the natural gas pipeline; and the air guide pipe, the air conveying pipe and the air storage tank are all provided with valves or sealing covers for blocking, so that each stage can be independently controlled, and the safety performance is high.
(2) The utility model discloses with the terminal slope opening just right with the natural gas flow direction that sets up of bleed pipe for earlier through the back again through the side cut opening during gas flow, the natural gas can get into bleed pipe fast, improves sampling efficiency.
(3) The utility model discloses still set up protection casing, sealing washer isotructure for sampling system is safer.
(4) The utility model discloses simple structure, simple operation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Illustration of the drawings: the gas storage device comprises a natural gas pipeline, a gas introducing pipe, a gas conveying pipe, a gas storage tank, a sealing cover, a sample outlet pipe, a check valve, a protective cover, a sliding door, a check valve I, a check valve 7, an air bag 8, a check valve II and a sealing ring 9.
In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "I", "II" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, integrally connected; can be mechanical connection and electrical connection; may be directly connected, indirectly connected through intervening agents, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood to be specific to those skilled in the art.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, a natural gas line's sampling device, including natural gas line 1, be equipped with the bleed pipe 2 that runs through it on the 1 pipe wall of natural gas line, the one end of bleed pipe 2 is down towards the intraductal extension of natural gas line 1, the other end is the evagination upwards, the top of bleed pipe 2 is sealed, the bottom is the opening, the part intercommunication gas-supply pipe 3 of bleed pipe 2 evagination upwards, the other end intercommunication gas storage tank 4 of gas-supply pipe 3, be equipped with check valve I6 on the bleed pipe 2, be equipped with check valve II8 on the gas-supply pipe 3. The air guide pipe 2 is vertically arranged, the air delivery pipe 3 is horizontally arranged, and the air guide pipe and the air delivery pipe are vertical to each other.
The top of the gas storage tank 4 is provided with a sample outlet pipe 402, the sample outlet pipe 402 is provided with a check valve 403 for preventing gas from flowing backwards, the check valve 403 can also prevent air from entering the gas storage tank 4 to cause sampling inaccuracy, and the sample outlet pipe 402 is provided with a sealing cover 401 for sealing or opening.
The natural gas guide in the natural gas pipeline 1 comes out when bleed pipe 2 is used for the sampling operation, and rethread gas-supply pipe 3 is carried to the gas storage box 4 in, when needs sample, inserts the appearance pipe 402 of going out of gas storage box 4 with the sampling container like sampling steel bottle or sampling bag and carries out the sampling operation.
Because the bottom end of the bleed air pipe 2 is directly communicated with the natural gas pipeline 1, a part of natural gas is reserved in the bleed air pipe 2 in a normal state, if the direct sampling is not processed, the reserved gas in advance rather than real-time gas is preferably adopted, and the sampling is inaccurate. Therefore, the top end of the bleed air pipe 2 is provided with the air bag 7, the air bag 7 is communicated with the bleed air pipe 2, and before sampling operation, the air bag 7 can be used for extruding the gas of the bleed air pipe 2 out of the natural gas pipeline 1 for replacement, so that the gas entering the bleed air pipe 2 is real-time gas. The check valve I6 is arranged at the position of the air entraining pipe 2 above the air conveying pipe 3, namely, the check valve I6 is arranged at the position between the top end of the air entraining pipe 2 and the air conveying pipe 3, so that natural gas can be prevented from entering the air bag 7 to protect the air bag 7 in the non-operating state of the air bag 7.
In order to protect the sampling system and prevent the external environment from generating adverse effect on the sampling system, the system is arranged in the protective cover 5, the protective cover 5 is fixed on the outer wall of the natural gas pipeline 1, the protective cover 5 covers the convex part of the air guide pipe 2, the air pipe 3 and the air bag 7, and the top end of the protective cover 5 is provided with a sliding door 501 for operation.
In the preferred structure, the end of bleed pipe 2 is equal to 1 axis of natural gas line for the gas that bleed pipe 2 took out is the gas of 1 pipeline center department of natural gas line, makes it more accord with the natural gas sample and leads rule requirement.
In the preferred structure, the position that is close to the end of bleed pipe 2 is equipped with the slope side cut for bleed pipe 2 end is the side slope opening, and its slope opening direction is just right the natural gas flow direction, passes through the side cut opening earlier and passes through the back when gas flows promptly. This structure makes when taking a sample, and the natural gas can get into bleed pipe 2 fast, improves sample efficiency.
In the preferred structure, in order to prevent the bleed air pipe 2 and the natural gas pipeline 1 department of meeting from taking place to leak, the bleed air pipe 2 is equipped with sealing washer 9 with the natural gas pipeline 1 outer wall department of meeting, and sealing washer 9 entangles the department of meeting through the mode of adhesion, can protect it on the one hand, prevents to leak on the other hand.
The utility model discloses the working process:
when sampling is not needed, the one-way valve I6, the one-way valve II8, the check valve 403 and the sliding door 501 are all closed, and the sample outlet pipe 402 is sealed and locked by the sealing cover 401;
when natural gas needs to be sampled, the sliding door 501 and the one-way valve I6 are opened, the air bag 7 is extruded for many times, generally for 3-10 times, and residual gas in the air guide pipe 2 is extruded out and replaced with natural gas flowing in the natural gas pipeline 1 in real time; then closing the one-way valve I6, opening the sealing cover 401, communicating a sampling container such as a sampling steel bottle or a sampling bag with the sample outlet pipe 402, and opening the check valve 403 and the one-way valve II8, so that natural gas flows from the natural gas pipeline 1 through the gas guide pipe 2, the gas pipe 3 and the gas storage tank 4 in sequence to enter the sampling container for sampling;
when the sampling operation is finished, the one-way valve II8 is closed, after the sampling container collects the natural gas in the gas storage tank 4, the check valve 403 is closed, the sampling container is separated from the sample outlet pipe 402, the sealing cover 401 is immediately sealed to the sample outlet pipe 402, and the sliding door 501 is closed.
The foregoing merely illustrates preferred embodiments of the present invention, which are described in considerable detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. A sampling device of a natural gas pipeline comprises the natural gas pipeline, and is characterized in that: the natural gas pipeline is characterized in that a gas-leading pipe penetrating through the natural gas pipeline is arranged on the pipe wall of the natural gas pipeline, the gas-leading pipe is vertically arranged, one end of the gas-leading pipe extends downwards towards the inside of the natural gas pipeline, the other end of the gas-leading pipe protrudes upwards, the top end of the gas-leading pipe is a seal, and the bottom end of the gas-leading pipe is an opening; the part of the air guide pipe protruding upwards is communicated with an air conveying pipe, the air conveying pipe is horizontally arranged, and the other end of the air conveying pipe is communicated with an air storage box; the air-entraining pipe is provided with a one-way valve I, and the air conveying pipe is provided with a one-way valve II; the top end of the gas storage box is provided with a sample outlet pipe, the sample outlet pipe is provided with a check valve, and the sample outlet pipe is provided with a sealing cover; and the top end of the air-entraining pipe is provided with an air bag.
2. A gas pipeline sampling device as claimed in claim 1, wherein: the check valve I is arranged at the position of the air entraining pipe region above the air conveying pipe, and the check valve I is positioned at the top end of the air entraining pipe and at the position between the air conveying pipes.
3. A gas pipeline sampling device as claimed in claim 1, wherein: the natural gas pipeline air bag protection device is characterized by further comprising a protection cover, wherein the protection cover is fixed on the outer wall of the natural gas pipeline, the protection cover covers the outer convex part of the air guide pipe, the air pipe and the air bag, and a sliding door is arranged on the top end of the protection cover.
4. A gas pipeline sampling device as claimed in claim 1, wherein: the tail end of the air guide pipe is flush with the central axis of the natural gas pipeline.
5. A gas pipeline sampling device as claimed in claim 1, wherein: the tail end of the air guide pipe is provided with an inclined trimming edge close to the tail end, the tail end of the air guide pipe is provided with a side edge inclined opening, and the inclined opening direction of the air guide pipe is opposite to the natural gas flowing direction.
6. A gas pipeline sampling device as claimed in claim 1, wherein: and a sealing ring is arranged at the joint of the air entraining pipe and the outer wall of the natural gas pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921051758.2U CN210136114U (en) | 2019-07-05 | 2019-07-05 | Sampling device of natural gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921051758.2U CN210136114U (en) | 2019-07-05 | 2019-07-05 | Sampling device of natural gas pipeline |
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| CN210136114U true CN210136114U (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921051758.2U Active CN210136114U (en) | 2019-07-05 | 2019-07-05 | Sampling device of natural gas pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112595466A (en) * | 2020-12-04 | 2021-04-02 | 沪东中华造船(集团)有限公司 | Helium concentration sampling detection device for helium test of sublayer insulating layer of liquid cargo tank of LNG ship |
-
2019
- 2019-07-05 CN CN201921051758.2U patent/CN210136114U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112595466A (en) * | 2020-12-04 | 2021-04-02 | 沪东中华造船(集团)有限公司 | Helium concentration sampling detection device for helium test of sublayer insulating layer of liquid cargo tank of LNG ship |
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