CN112284465B - Natural gas flow measuring device for water-containing natural gas transmission pipeline - Google Patents
Natural gas flow measuring device for water-containing natural gas transmission pipeline Download PDFInfo
- Publication number
- CN112284465B CN112284465B CN202011213801.8A CN202011213801A CN112284465B CN 112284465 B CN112284465 B CN 112284465B CN 202011213801 A CN202011213801 A CN 202011213801A CN 112284465 B CN112284465 B CN 112284465B
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- Prior art keywords
- natural gas
- measuring
- pipe
- pipeline
- water
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 239000003345 natural gas Substances 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 230000005540 biological transmission Effects 0.000 title claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 6
- 210000001503 joint Anatomy 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 5
- 239000003595 mist Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a natural gas flow measuring device for an aqueous natural gas transmission pipeline, which is provided with a measuring pipe, a first differential pressure transmitter and a flow integrating instrument, wherein the measuring pipe is provided with a Pitot bar flow sensor; the gas inlet and outlet holes at two ends of the measuring tube are respectively connected with a pipeline joint which can be in butt joint with the water-containing natural gas pipeline, the inner diameter size of the pipeline joint is equal to that of the water-containing natural gas pipeline, and the inner diameter size of the measuring tube is larger than that of the pipeline joint. The flow of natural gas in the water-containing natural gas transmission pipeline can be measured relatively accurately after the method is applied.
Description
Technical Field
The invention relates to a gas flow measuring device used in a gas transmission pipeline, in particular to a natural gas flow measuring device used in a natural gas transmission pipeline containing water.
Background
In the prior art, a measuring device for measuring the fluid flow in a pipeline mostly adopts a Pitot bar flowmeter, the structure of the Pitot bar flowmeter mainly comprises a Pitot bar sensor, a differential pressure transmitter and a flow integrating instrument, a full-pressure conduit and a static pressure conduit are connected between the Pitot bar sensor and the differential pressure transmitter, and a signal output end of the differential pressure transmitter is connected with a signal input end of the flow integrating instrument. When the Pitot bar flowmeter measures the fluid flow in the pipeline, the Pitot bar sensor is vertically inserted into the pipeline, the differential pressure transmitter converts the full pressure signal and the static pressure signal transmitted by the full pressure conduit and the static pressure conduit into corresponding standard current signals and transmits the standard current signals to the flow integrating instrument, and the flow of the fluid in the pipeline can be calculated in the flow integrating instrument according to the full pressure and the static pressure of the fluid flowing in the pipeline and the fluid mechanics principle.
For natural gas flow measurement in a water-containing natural gas transmission pipeline, the flow of the natural gas cannot be accurately measured by directly utilizing the Pitot bar flowmeter in the prior art because the natural gas contains water.
Disclosure of Invention
The invention aims to provide the natural gas flow measuring device for the water-containing natural gas transmission pipeline, which can relatively accurately measure the flow of natural gas in the water-containing natural gas transmission pipeline after the device is applied.
In order to solve the technical problems, the natural gas flow measuring device for the water-containing natural gas transmission pipeline comprises a measuring pipe, a first differential pressure transmitter and a flow integrating instrument, wherein a Pitot bar flow sensor is arranged on the measuring pipe, a full pressure pipe and a static pressure pipe of the Pitot bar flow sensor are connected with an input end of the first differential pressure transmitter, a signal output end of the first differential pressure transmitter is connected with a signal input end of the flow integrating instrument, an air inlet hole is formed at the left end of the measuring pipe, an air outlet hole is formed at the right end of the measuring pipe, the natural gas flow measuring device further comprises a second differential pressure transmitter for measuring the liquid level of liquefied water in the measuring pipe, a top pressure guide pipe and a bottom pressure guide pipe which are communicated with the inside of the measuring pipe are symmetrically arranged on the top wall and the bottom wall of the measuring pipe, the top pressure guide pipe and the bottom pressure guide pipe are connected with the input end of the second differential pressure transmitter, and the signal output end of the second differential pressure transmitter is connected with the signal input end of the flow integrating instrument; the gas inlet and outlet holes at two ends of the measuring tube are respectively connected with a pipeline joint which can be in butt joint with the water-containing natural gas pipeline, the inner diameter size of the pipeline joint is equal to that of the water-containing natural gas pipeline, and the inner diameter size of the measuring tube is larger than that of the pipeline joint.
The natural gas flow measuring device for the water-containing natural gas transmission pipeline adopts the structure, and is arranged on the natural gas transmission pipeline in a butt joint way through the pipeline connectors at the two ends of the measuring pipe in the invention when in use, because the inner diameter size of the measuring pipe is larger than the inner diameter size of the pipeline connectors, the flow speed of the water-containing natural gas in the measuring pipe is reduced, the water can be deposited and reduced in the measuring pipe to be separated from the natural gas, and the device also comprises a second differential pressure transmitter for measuring the liquid level of the liquefied water in the measuring pipe, the top wall and the bottom wall of the pipeline of the measuring pipe are symmetrically provided with a top pressure guide pipe and a bottom pressure guide pipe which are communicated with the inside of the measuring pipe, the top pressure guide pipe and the bottom pressure guide pipe are connected with the input end of the second differential pressure transmitter, and the signal output end of the second differential pressure transmitter is connected with the signal input end of the flow integrating instrument, so that the liquid level of the water passing through the measuring pipe can be measured, and the flow of the water-containing natural gas in the measuring pipe can be obtained. According to the invention, the inner diameter size of the measuring pipe can be reasonably designed, so that the flow velocity of the natural gas containing water in the measuring pipe is sufficiently reduced, further, the water is sufficiently deposited, the separation of the water and the natural gas can be better realized, and further, the flow rate of the natural gas can be more accurately measured.
As an improvement of the invention, the aperture sizes of the air inlet and the air outlet at the two ends of the measuring tube are equal to the inner diameter size of the pipeline joint, the axes of the air inlet and the pipeline joint connected with the air inlet are all positioned on the same straight line with the axis of the measuring tube, the axes of the air outlet and the pipeline joint connected with the air outlet are positioned on the same straight line, and the axis of the air outlet is positioned below the axis of the measuring tube; and a baffle plate component is arranged in the measuring pipe close to the air inlet hole, and the Pitot bar flow sensor, the top pressure guide pipe and the bottom pressure guide pipe are all arranged on the measuring pipe between the baffle plate component and the air outlet hole.
After the baffle plate component is arranged in the measuring pipe close to the air inlet hole, the deposition and the descent of the moisture can be further accelerated, the more effective separation of the moisture and the natural gas is realized, and the accuracy of the natural gas flow measurement is further improved; the axis of the exhaust hole is positioned below the axis of the measuring tube, so that the moisture which is separated and deposited can better pass through the measuring tube together with the natural gas.
As a further improvement of the invention, the baffle plate component comprises a plurality of arch baffle plates which are uniformly distributed and fixedly arranged on the inner wall of the measuring tube and are perpendicular to the axis of the measuring tube, the bottom of each arch baffle plate is provided with an air passing round hole, the adjacent arch baffle plates are arranged in a staggered mode, and a plurality of reinforcing connecting rods parallel to the axis of the measuring tube are connected between the arch baffle plates.
Further preferably, the vent hole is tangential to the inner diameter of the measurement tube. The vent hole is tangential to the inner diameter of the measuring tube, which can better enable the moisture deposited by separation to pass through the measuring tube.
Further, the opposite sides of each arched baffle plate are fixedly provided with defogging short rods which are square rods or conical rods. The mist elimination short rod can better liquefy the water mist into water, and remove the water mist in the natural gas as much as possible.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the main cross-sectional structure of a natural gas flow measurement device for use in an aqueous natural gas transmission line of the present invention.
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1, with the first differential pressure transmitter and flow totalizer omitted.
FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1, with the difference in comparison to FIG. 2 that adjacent arcuate baffles are arranged in a staggered fashion.
Fig. 4 is an enlarged schematic view of the structure at I in fig. 1, showing the defogging lever as a square lever.
Fig. 5 is an enlarged schematic view of the structure at I in fig. 1, showing the defogging lever as a tapered lever.
Detailed Description
Referring to fig. 1-5, the natural gas flow measuring device for the water-containing natural gas transmission line of the present invention comprises a measuring tube 100, a first differential pressure transmitter 200 and a flow totalizer 300, wherein a pitoba flow sensor 110 is installed on the measuring tube, a full pressure tube 111 and a static pressure tube 112 of the pitoba flow sensor are connected with an input end of the first differential pressure transmitter 200, a signal output end of the first differential pressure transmitter is connected with a signal input end of the flow totalizer 300, an air inlet 101 is formed at a left end of the measuring tube 100, an air outlet 102 is formed at a right end of the measuring tube 100, and a second differential pressure transmitter 400 for measuring the liquid level of the liquefied water in the measuring tube 100 is also included, a top pressure guide tube 103 and a bottom pressure guide tube 104 which are communicated with the inside of the measuring tube are symmetrically installed on a top wall and a bottom wall of the measuring tube, the top pressure guide tube 103 and the bottom pressure guide tube 104 are connected with an input end of the second differential pressure transmitter 400, and a signal output end of the second differential pressure transmitter 400 is connected with a signal input end of the flow totalizer 300; the gas inlet and outlet holes at two ends of the measuring tube 100 are respectively connected with a pipeline joint 500 which can be in butt joint with the water-containing natural gas pipeline, the inner diameter size of the pipeline joint 500 is equal to that of the water-containing natural gas pipeline, the inner diameter size of the measuring tube 100 is larger than that of the pipeline joint 500, and the inner diameter size of the measuring tube can be 2-5 times of that of the pipeline joint. The pore sizes of the air inlet and the air outlet holes 101 and 102 at the two ends of the measuring pipe 100 are equal to the inner diameter size of the pipeline joint 500, the axes of the air inlet hole and the pipeline joint connected with the air inlet hole are all positioned on the same straight line with the axis of the measuring pipe 100, the axes of the air outlet hole and the pipeline joint connected with the air outlet hole are positioned on the same straight line, and the axis of the air outlet hole is positioned below the axis of the measuring pipe; a baffle member 120 is installed in the measuring tube 100 near the air inlet hole 101, and the pitobar flow sensor 110, the top pressure guide tube 103 and the bottom pressure guide tube 104 are all installed on the measuring tube 100 between the baffle member 120 and the air outlet hole 102. The baffle member 120 includes a plurality of arched baffles 121 which are uniformly distributed on the inner wall of the measuring tube 100 and are perpendicular to the axis of the measuring tube, the bottom of each arched baffle is provided with an air passing round hole 122, the adjacent arched baffles are arranged in a staggered manner, and a plurality of reinforcing connecting rods 123 parallel to the axis of the measuring tube are connected between the arched baffles. The vent hole 102 is tangential to the inner diameter of the measurement tube 100. The opposite sides of each arched baffle 121 are also fixedly provided with a defogging short rod 124, and the defogging short rod 124 is a square rod or a conical rod.
Claims (5)
1. A natural gas flow measuring device for among water-containing natural gas line has survey pipe (100), first differential pressure transmitter (200) and flow totalizer (300), is equipped with on the survey pipe and holds in palm bar flow sensor (110), and the full pressure pipe (111) and the static pressure pipe (112) of pitot bar flow sensor link to each other with the input of first differential pressure transmitter (200), the signal output part of first differential pressure transmitter with the signal input part of flow totalizer (300) links to each other, and the left end of survey pipe (100) is formed with inlet port (101), and the right-hand member is formed with exhaust hole (102), its characterized in that: the system comprises a measuring pipe (100), a first differential pressure transmitter (400) for measuring the liquid level of liquefied water in the measuring pipe (100), a top pressure guide pipe (103) and a bottom pressure guide pipe (104) which are communicated with the inside of the measuring pipe are symmetrically arranged on the top wall and the bottom wall of a pipeline of the measuring pipe (100), the top pressure guide pipe (103) and the bottom pressure guide pipe (104) are connected with the input end of the first differential pressure transmitter (400), and the signal output end of the first differential pressure transmitter (400) is connected with the signal input end of a flow integrating instrument (300); the gas inlet and outlet holes at two ends of the measuring pipe (100) are respectively connected with a pipeline joint (500) which can be in butt joint with the water-containing natural gas pipeline, the inner diameter size of the pipeline joint (500) is equal to that of the water-containing natural gas pipeline, and the inner diameter size of the measuring pipe (100) is larger than that of the pipeline joint (500).
2. A natural gas flow measurement device for use in an aqueous natural gas transmission line as defined in claim 1, wherein: the aperture sizes of the air inlet and the air outlet holes (101, 102) at the two ends of the measuring tube (100) are equal to the inner diameter size of the pipeline joint (500), the axes of the air inlet hole and the pipeline joint connected with the air inlet hole are all positioned on the same straight line with the axis of the measuring tube (100), the axes of the air outlet hole and the pipeline joint connected with the air outlet hole are positioned on the same straight line, and the axis of the air outlet hole is positioned below the axis of the measuring tube; a baffle plate component (120) is arranged in the measuring tube (100) close to the air inlet hole (101), and the Pitot bar flow sensor (110), the top pressure guide tube (103) and the bottom pressure guide tube (104) are all arranged on the measuring tube (100) between the baffle plate component (120) and the air outlet hole (102).
3. A natural gas flow measurement device for use in an aqueous natural gas transmission line as defined in claim 2, wherein: the baffle plate component (120) comprises a plurality of arch baffle plates (121) which are fixedly arranged on the inner wall of the measuring tube (100) at intervals and uniformly distributed and are perpendicular to the axis of the measuring tube, the bottom of each arch baffle plate is provided with an air passing round hole (122), the adjacent arch baffle plates are arranged in a staggered mode, and a plurality of reinforcing connecting rods (123) parallel to the axis of the measuring tube are connected between the arch baffle plates.
4. A natural gas flow measurement device for use in an aqueous natural gas transmission line as defined in claim 2, wherein: the vent hole (102) is tangential to the inner diameter of the measuring tube (100).
5. A natural gas flow measurement device for use in an aqueous natural gas transmission line as defined in claim 3, wherein: and defogging short rods (124) are fixedly arranged on two opposite sides of each arched baffle plate (121), and the defogging short rods (124) are square rods or conical rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011213801.8A CN112284465B (en) | 2020-11-04 | 2020-11-04 | Natural gas flow measuring device for water-containing natural gas transmission pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011213801.8A CN112284465B (en) | 2020-11-04 | 2020-11-04 | Natural gas flow measuring device for water-containing natural gas transmission pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112284465A CN112284465A (en) | 2021-01-29 |
| CN112284465B true CN112284465B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011213801.8A Active CN112284465B (en) | 2020-11-04 | 2020-11-04 | Natural gas flow measuring device for water-containing natural gas transmission pipeline |
Country Status (1)
| Country | Link |
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| CN (1) | CN112284465B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203163793U (en) * | 2013-01-29 | 2013-08-28 | 宁夏新银河仪表有限公司 | Natural gas flow-meter |
| CN104101390A (en) * | 2014-08-07 | 2014-10-15 | 辽宁毕托巴科技有限公司 | Flow measuring device for measuring sewage in non-full pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7623975B2 (en) * | 2007-05-30 | 2009-11-24 | zed.i solutions Inc. | Method of measuring gas flow |
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2020
- 2020-11-04 CN CN202011213801.8A patent/CN112284465B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203163793U (en) * | 2013-01-29 | 2013-08-28 | 宁夏新银河仪表有限公司 | Natural gas flow-meter |
| CN104101390A (en) * | 2014-08-07 | 2014-10-15 | 辽宁毕托巴科技有限公司 | Flow measuring device for measuring sewage in non-full pipe |
Non-Patent Citations (2)
| Title |
|---|
| 对采油厂天然气计量管理的几点建议;冯平;;油气田地面工程;20090820(第08期);全文 * |
| 毕托巴流量计在宣钢焦炉煤气计量中的运用;黄宁;;科技风;20170615(第11期);全文 * |
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| CN112284465A (en) | 2021-01-29 |
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