CN203053492U - Natural gas and gas distillate/water distillate gas-liquid two-phase flow measuring device - Google Patents
Natural gas and gas distillate/water distillate gas-liquid two-phase flow measuring device Download PDFInfo
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- CN203053492U CN203053492U CN 201320021134 CN201320021134U CN203053492U CN 203053492 U CN203053492 U CN 203053492U CN 201320021134 CN201320021134 CN 201320021134 CN 201320021134 U CN201320021134 U CN 201320021134U CN 203053492 U CN203053492 U CN 203053492U
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- shaped pipe
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Abstract
The utility model discloses a natural gas and gas distillate or water distillate gas-liquid two-phase flow measuring device. The natural gas and gas distillate or water distillate gas-liquid two-phase flow measuring device has a U-shaped pipe, a needle valve, a temperature sensor and a pressure sensor. A reversed U-shaped pipe is arranged behind the U-shaped pipe. A first flowing rectifier and a first Venturi tube are arranged on the reversed U-shaped pipe. A first differential pressure sensor is arranged on the first Venturi tube. A second flowing rectifier and a second Venturi tube are arranged behind the reversed U-shaped pipe. The temperature sensor, the pressure sensor, the first differential pressure sensor and the second differential pressure sensor are respectively connected with a singlechip which collects information transmitted by all parts and flow of natural gas and flow of gas distillate or water distillate are worked out and finally, the singlechip communicates with a far-terminal data platform through a wireless data transmission module. The natural gas and gas distillate or water distillate gas-liquid two-phase flow measuring device can effectively solve the problem in measuring flow of the natural gas blended with the gas distillate and is reasonable and scientific in measuring method, reliable in measuring device and high in measuring precision.
Description
Technical field
The utility model belongs to the field of measuring technique of Petroleum Production, is specifically related to a kind of gas-liquid two-phase flow-measuring method and device of G﹠C/water.
Background technology
In gas exploitation course, water and the white oil in addition exploited out simultaneously, in order to determine the output of rock gas, understand the variation of hydrocarbon stratum content and stratal configuration, need carry out continuous measurement to the rock gas of output, because in the rock gas extraction process, also exploit out simultaneously white oil and water, make single natural gas flowmeter measuring error increase, when white oil and aquatic products go out more for a long time, single natural gas flowmeter just can't use.Therefore, when rock gas is measured, the output of white oil and water must be considered, just the flow metering of gas-liquid two-phase will be carried out.
Gas flow is in respect of a variety of, as positive displacement, differential, quality formula, momentum-type, ultrasound wave etc.But, remain a difficult problem for the flow measurement in the gas production.The difficulty of measuring is to have in the rock gas water and the white oil of inequality, thereby influences the measurement of rock gas, and the measuring error of most of natural gas flowmeters is bigger.From volume, even moisture ratio is very little in the rock gas, ratio is just very big in quality, and the existence of liquid makes the measuring error of most flowmeters increase.For example, produce 50,000 side's rock gases every day and contain water and be approximately 0.5 side, under 1.0mpa pressure, the rock gas volume is that the volume ratio of 5000 sides and water is 10000:1, and weight ratio is 10:1, and this will influence the accurate metering of many types flowmeter.Some water is to exist with the water droplet form, when water droplet impacts the flow timing, can make flowmeter produce big measuring error.All need to know natural gas density in the measuring principle of most of flowmeters, and the existence of water and white oil makes the real density of rock gas produce very big variation, thereby make flow measurement produce very mistake.In addition, water droplet is attached to measuring section, has changed the flow area of measuring, and directly influences the accurate measurement of flow.Liquid measure in the rock gas also is a difficult problem, and white oil and free water are to follow rock gas from the stratum output, and changes with temperature and pressure reduction in the production run.In pipeline, liquid can be pressed close to wall and makes liquid film and flow, and also can do block flowing, and such nowed forming makes flow measurement more difficult.
To sum up, research and development measuring accuracy height, reliable and stable rock gas and liquid multi-phase flowmeter have very important significance to gas production, can greatly promote the raising of gas metering technology, improve gas production development management technical merit.
Summary of the invention
At the defective that exists in the above-mentioned prior art or deficiency, the purpose of this utility model is, a kind of gas-liquid two-phase flow-measuring method and device of G﹠C/water are provided, it is by arranging U-shaped pipe, inverted U pipe, mobile rectifier, Venturi tube at measuring channel, be provided with pressure, temperature, differential pressure pick-up and needle-valve simultaneously, gather the parameter of the gas-fluid two-phase mixture in inflow point and stage casing, finally calculate G﹠C flow parameter separately in the gas-fluid two-phase mixture.
In order to realize above-mentioned task, the utility model is taked following technical solution:
A kind of gas-liquid two-phase flow measurement device of G﹠C comprises U-shaped pipe, needle-valve, temperature sensor, pressure transducer, inverted U pipe, the first mobile rectifier, first Venturi tube, first differential pressure pickup, the second mobile rectifier, second Venturi tube, second differential pressure pickup and single-chip microcomputer; Wherein, described U-shaped pipe, inverted U pipe, the second mobile rectifier, second Venturi tube are successively set on the measuring channel according to the direction that the G﹠C potpourri flows, and U-shaped pipe is arranged on the inflow point of measuring channel; The second Venturi tube horizontal positioned, described second differential pressure pickup are installed on second Venturi tube and both are connected; At the residing measuring channel of U-shaped pipe described pressure transducer and temperature sensor are installed; Described needle-valve is arranged on the bottom of U-shaped pipe; On the ascent stage of inverted U pipe, by ascent direction first mobile rectifier and first Venturi tube is installed successively, and first Venturi tube is placed vertically; Described first differential pressure pickup is installed on first Venturi tube and both are connected; Described pressure transducer, temperature sensor, first differential pressure pickup, second differential pressure pickup connect single-chip microcomputer respectively, and this single-chip microcomputer is connected with wireless data transfer module, communicate by letter with the remote data platform by wireless network.
Device of the present utility model also comprises following other technologies feature:
The caliber of described U-shaped pipe is identical with the caliber of measuring channel, and it highly is 3～5 times of self caliber.
Described first rectifier that flows is a pipe, and its outer wall and inverted U inside pipe wall are welded as a whole, its internal cavities by two ends progressively shrink to the centre form two round table-like, be cylindric between these two round platforms; Described second rectifier that flows is a pipe, and its outer wall and measuring channel inwall are welded as a whole, its internal cavities by two ends progressively shrink to the centre form two round table-like, be cylindric between these two round platforms.
The utility model efficiently solves the difficult problem of the flow measurement of the rock gas that is mixed with white oil/water, and measuring method is reasonable, science, and measurement mechanism is reliable, no easily worn part, and the measuring accuracy height, data are reliable.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Each label implication among the figure: 1, U-shaped pipe; 2, needle-valve; 3, temperature sensor; 4, pressure transducer; 5, inverted U pipe; 6, the first mobile rectifier; 7, first Venturi tube; 8, first differential pressure pick-up; 9, the second mobile rectifier; 10, second Venturi tube; 11, second differential pressure pick-up; 12, measuring channel.
Below in conjunction with the drawings and specific embodiments the utility model is further explained.
Embodiment
Actual conditions based on the gas production of introducing in the background technology, in the measuring process of gas discharge, we need consider the influence that white oil is measured gas meter, need to consider the nowed forming of liquid in the rock gas, should regard the gas discharge measurement as gas-liquid two-phase flow measurement amount problem.For this reason, the utility model proposes following G﹠C gas-liquid two-phase flow measurement device.
As shown in Figure 1, the gas-liquid two-phase flow measurement device of G﹠C/water of the present utility model comprises U-shaped pipe 1, needle-valve 2, temperature sensor 3, pressure transducer 4, inverted U pipe 5, the first mobile rectifier 6, first Venturi tube 7, first differential pressure pickup 8, the second mobile rectifier 9, second Venturi tube 10, second differential pressure pickup 11 and the single-chip microcomputer; Wherein, described U-shaped pipe 1, inverted U pipe 5, the second mobile rectifier 9, second Venturi tube 10 are successively set on the measuring channel 12 according to the direction that the G﹠C potpourri flows, and U-shaped pipe 1 is arranged on the inflow point of measuring channel 12, the caliber of this U-shaped pipe 1 is identical with the caliber of measuring channel 12, and it highly is 3～5 times of self caliber; Second Venturi tube, 10 horizontal positioned, described second differential pressure pickup 11 is installed on second Venturi tube 10 for the 6mm pipe by diameter and both are connected; At U-shaped pipe 1 residing measuring channel 12 described pressure transducer 3 and temperature sensor 4 are installed; Described needle-valve 2 is arranged on the bottom of U-shaped pipe 1; On the ascent stage of inverted U pipe 5, by ascent direction first mobile rectifier 6 and first Venturi tube 7 is installed successively, and first Venturi tube 7 is placed vertically; Described first differential pressure pickup 8 is installed on first Venturi tube 7 for the 6mm pipe by diameter and both are connected; Described pressure transducer 3, temperature sensor 4, first differential pressure pickup 8, second differential pressure pickup 11 connect single-chip microcomputer respectively, and this single-chip microcomputer is connected with wireless data transfer module, communicate by letter with the remote data platform by wireless network.
Described U-shaped pipe 1 is as the liquid sampler of measuring channel 12 inflow points, when gas-liquid mixture flows in pipe, part flows in this U-shaped pipe 1 along the tube wall working fluid, and after being full of liquid in the U-shaped pipe 1, liquid wherein keeps flowing under the effect of flowing pressure.
Described needle-valve 2 is in order to extracting liq sample from U-shaped pipe 1.
Described pressure transducer 3 is used for the temperature of measuring channel 12 inflow point's rock gases.
Described temperature sensor 4 is used for the pressure of measuring channel 12 inflow point's rock gases.
Described first rectifier 6 that flows is a pipe, and its outer wall and inverted U pipe 5 inwalls are welded as a whole, its internal cavities by two ends progressively shrink to the centre form two round table-like, be cylindric between these two round platforms.First flows rectifier 6 for reducing to the influence that 1 pair of first Venturi tube 7 of U-shaped pipe is measured, and reduces the length of the preceding stable section of measuring section.
Described first differential pressure pickup 8 is used for measuring the dynamic pressure of first Venturi tube 7 and falls.
Described second rectifier 9 that flows is a pipe, and its outer wall and measuring channel 12 inwalls are welded as a whole, its internal cavities by two ends progressively shrink to the centre form two round table-like, be cylindric between these two round platforms.Second flows rectifier 9 for reducing the influence that 5 pairs of second Venturi tubes 10 of inverted U pipe are measured.
The dynamic pressure that described second differential pressure pickup 11 is used for measurement second Venturi tube 10 is fallen.
Described single-chip microcomputer is used for receiving each and measures the data of sending together, calculates the flow of G﹠C then, and by the wireless data transfer module that self connects the data on flows that obtains is sent to the remote data platform.
The measuring element of using in the utility model is conventional products, and wherein, temperature sensor 3 adopts platinum resistance; Pressure transducer 4 adopts Rosemount (rosemont) high-precision pressure sensor; First differential pressure pickup 8 and second differential pressure pickup 11 all adopt Rosemount (rosemont) high precision differential pressure pick-up, can be implemented in the on-the-spot range of regulating differential pressure pickup by actual needs.
The concrete computation process of single-chip microcomputer is as follows:
The total flow Q(unit of the gas-fluid two-phase mixture of gas discharge and white oil/water, cube meter per second):
In the formula, A is the sectional area of first Venturi tube 7, unit: square metre; C is coefficient of flow, can be determined by test, for standard Venturi tube, c=1; ε is compressible coefficient, when flow velocity in the pipeline during much smaller than velocity of sound, and ε=1; Dp
2The pressure that is second Venturi tube 10 falls, unit: Mpa is recorded by second differential pressure pick-up 11; ρ is the density of gas-liquid mixture, unit: kilogram/cubic meter calculates by formula 2:
Dp
1=dp
2+ ρ gH (formula 2)
In the formula, H is the height of first Venturi tube 7, and ρ is the density of gas-liquid mixture; Dp
1The pressure that is first Venturi tube 7 falls, unit: Mpa is recorded by first differential pressure pickup 8; Dp
2The dynamic pressure that is second Venturi tube 10 is fallen, unit: Mpa is recorded by second differential pressure pick-up 11; A ρ gH pressure of attaching most importance to falls, and g is acceleration of gravity, gets 9.8 meter per seconds
2
ρ=ρ
g* α+ρ
W* (1-α) (formula 3)
In the formula, α is void fraction, ρ
WBe water-mass density, get 1000kg/m
3ρ
gBe natural gas density under the operating mode, unit: kilogram/cubic meter calculates according to formula 4:
ρ
g=ρ
G0* p/p
0* T
0/ T (formula 4)
In the formula, ρ
G0Be natural gas density under the standard state, get 0.717 kilogram/cubic metre; P is working pressure, and unit: Mpa is recorded by pressure transducer 4; p
0Be atmospheric pressure, get 0.1Mpa; T
0Be temperature under the standard state, T
0=293K; T is natural gas temperature under the operating mode, T=(273+T
1) K, T
1Recorded by temperature sensor 3.
With above-mentioned solving simultaneous equation, obtain gas-liquid two-phase total flow Q, void fraction α, and then calculate gas discharge Q respectively by formula 5,6
gCube meter per second) and fluid flow Q (unit:
W(unit: cube meter per second):
Q
g=Q * α (formula 5)
Q
W=Q * (1-α) (formula 6)
Single-chip microcomputer utilizes wireless network to communicate by letter with the remote data platform, with the gas discharge Q that calculates by the wireless data transfer module of configuration
gWith fluid flow Q
WSend.
Claims (3)
1. the gas-liquid two-phase flow measurement device of a G﹠C/water, it is characterized in that, comprise U-shaped pipe (1), needle-valve (2), temperature sensor (3), pressure transducer (4), inverted U pipe (5), the first mobile rectifier (6), first Venturi tube (7), first differential pressure pickup (8), the second mobile rectifier (9), second Venturi tube (10), second differential pressure pickup (11) and single-chip microcomputer; Wherein, described U-shaped pipe (1), inverted U pipe (5), the second mobile rectifier (9), second Venturi tube (10) are successively set on the measuring channel (12) according to the direction that the G﹠C potpourri flows, and U-shaped pipe (1) is arranged on the inflow point of measuring channel (12); Second Venturi tube (10) horizontal positioned, described second differential pressure pickup (11) are installed in second Venturi tube (10) upward and both are connected; At the residing measuring channel of U-shaped pipe (1) (12) described pressure transducer (3) and temperature sensor (4) are installed; Described needle-valve (2) is arranged on the bottom of U-shaped pipe (1); Ascent stage at inverted U pipe (5) is upward installed first mobile rectifier (6) and first Venturi tube (7) successively by ascent direction, and first Venturi tube (7) is vertically placed; First Venturi tube (7) that is installed in described first differential pressure pickup (8) goes up and both are connected; Described pressure transducer (3), temperature sensor (4), first differential pressure pickup (8), second differential pressure pickup (11) connect single-chip microcomputer respectively, and this single-chip microcomputer is connected with wireless data transfer module, communicate by letter with the remote data platform by wireless network.
2. the gas-liquid two-phase flow measurement device of G﹠C/water as claimed in claim 1 is characterized in that, the caliber of described U-shaped pipe (1) is identical with the caliber of measuring channel (12), and it highly is 3～5 times of self caliber.
3. the gas-liquid two-phase flow measurement device of G﹠C/water as claimed in claim 1, it is characterized in that, the described first mobile rectifier (6) is a pipe, its outer wall and inverted U pipe (5) inwall are welded as a whole, its internal cavities by two ends progressively shrink to the centre form two round table-like, be cylindric between these two round platforms; Described second rectifier (9) that flows is a pipe, and its outer wall and measuring channel (12) inwall is welded as a whole, its internal cavities by two ends progressively shrink to the centre form two round table-like, be cylindric between these two round platforms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320021134 CN203053492U (en) | 2013-01-15 | 2013-01-15 | Natural gas and gas distillate/water distillate gas-liquid two-phase flow measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320021134 CN203053492U (en) | 2013-01-15 | 2013-01-15 | Natural gas and gas distillate/water distillate gas-liquid two-phase flow measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203053492U true CN203053492U (en) | 2013-07-10 |
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ID=48736435
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320021134 Expired - Fee Related CN203053492U (en) | 2013-01-15 | 2013-01-15 | Natural gas and gas distillate/water distillate gas-liquid two-phase flow measuring device |
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| Country | Link |
|---|---|
| CN (1) | CN203053492U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979808A (en) * | 2017-03-31 | 2017-07-25 | 中国计量大学 | A kind of ultrasound and target type meter combined type wet gas flow-measuring method |
-
2013
- 2013-01-15 CN CN 201320021134 patent/CN203053492U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979808A (en) * | 2017-03-31 | 2017-07-25 | 中国计量大学 | A kind of ultrasound and target type meter combined type wet gas flow-measuring method |
| CN106979808B (en) * | 2017-03-31 | 2020-06-16 | 中国计量大学 | Ultrasonic and target type flowmeter combined wet natural gas flow measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20150115 |
|
| EXPY | Termination of patent right or utility model |