CN202903248U - Simple orifice plate flowmeter for wellheads - Google Patents
Simple orifice plate flowmeter for wellheads Download PDFInfo
- Publication number
- CN202903248U CN202903248U CN 201220592315 CN201220592315U CN202903248U CN 202903248 U CN202903248 U CN 202903248U CN 201220592315 CN201220592315 CN 201220592315 CN 201220592315 U CN201220592315 U CN 201220592315U CN 202903248 U CN202903248 U CN 202903248U
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- CN
- China
- Prior art keywords
- orifice plate
- pressure
- throttle
- wellheads
- flowmeter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a simple orifice plate flowmeter for wellheads. The simple orifice plate flowmeter for wellheads is designed for high precision flow measurement for liquid, gas and steam pipelines. A throttle is disposed in a central hole of a throttle orifice plate. The throttle orifice plate is disposed between end faces of upper and lower tapping flanges connected via bolts. Each of the upper tapping flange and the lower tapping flange is provided with a radial orifice plate tapping hole. One end of a pressure guide pipe is connected to the orifice plate tapping holes, and the other end of the pressure guide pipe is connected with a differential transmitter. The differential transmitter, a temperature transmitter connected with a pipeline, and a pressure transmitter are all connected with a data radio. When pipeline fluid flows through the throttle orifice plate, the fluid contracts at the throttle and flows faster with lower static pressure, pressure difference is generated in front and rear of the throttle, and accordingly the flow can be measured according to the pressure difference. The simple orifice plate flowmeter for wellheads is widely applied to flow measurement of gas, steam and liquid and has the advantages of high precision, low cost, simple structure, convenience in maintenance, stable performance, reliability in use and the like.
Description
Technical field
The utility model relates to the simple and easy orifice flowmeter of a kind of well head, belongs to gasser well head field of measuring techniques.
Background technology
At present, the flowmeter that the Sulige area gas well uses mainly is intelligent precession spiral flowmeter, and this flowmeter exists that metering is inaccurate, measuring accuracy is lower and the shortcoming such as measuring cost is high.And in producing in the winter time, the easy frozen block of the connecting pipe of conventional orifice flowmeter often causes flowmeter malfunctioning.
Summary of the invention
The purpose of this utility model is to provide a kind of well head simple and easy orifice flowmeter, and this flowmeter accuracy is higher, and simple structure can be used for the measurement of pipeline liquid, gas and steam flow.
Concrete technical scheme of the present utility model is as follows:
Throttling element is located in the throttling orifice plate center pit, and throttling orifice plate is located at by between bolted upstream pressure flange and the downstream pressure end face of flange.Upstream pressure flange and downstream pressure flange are provided with orifice plate pressure tappings radially.Connecting pipe one end connects the orifice plate pressure tappings, and the other end connects differential pressure transmitter.The temperature transmitter of differential pressure transmitter, connecting tube and pressure unit all are connected with data radio.
The simple and easy orifice flowmeter of the utility model well head can be widely used in the flow measurement of gas, steam and liquid, has that precision height, cost are low, simple in structure, easy to maintenance, characteristics such as stable performance and use are reliable.
Description of drawings
Fig. 1 is the simple and easy orifice flowmeter throttling orifice plate of well head synoptic diagram.
Fig. 2 is the simple and easy orifice flowmeter work of well head synoptic diagram.
Embodiment
With reference to Fig. 1 and 2 embodiment of the present utility model is further specified:
Embodiment:
The simple and easy orifice flowmeter of the utility model is comprised of orifice plate pressure tappings 1, upstream pressure flange 2, throttling orifice plate 3, downstream pressure flange 4, differential pressure transmitter 5, connecting pipe 6, throttling element 7 temperature transmitters 8, pressure unit 9 and data radio 10:
Throttling element 7 is located in throttling orifice plate 3 center pits, and throttling orifice plate 3 is located at by between bolted upstream pressure flange 2 and downstream pressure flange 4 end faces.Upstream pressure flange 2 and downstream pressure flange 4 are provided with orifice plate pressure tappings 1 radially.Connecting pipe 6 one ends connect orifice plate pressure tappings 1, and the other end connects differential pressure transmitter 5.The temperature transmitter 8 of differential pressure transmitter 5, connecting tube is connected with pressure unit and all is connected with data radio 10.
The principle of work of the simple and easy orifice flowmeter of well head is as follows:
In the production application, when the flow in the pipeline during through throttling orifice plate 3, shrink at throttling element 7 places, flow velocity is strengthened, static pressure reduces, and produces pressure reduction in throttling element 7 front and back.And fluid flow is larger, and the pressure reduction of generation is also larger, thereby can be according to the pressure differential metering flow of throttling element 7 front and back.
The relation of fluid flow and differential pressure is determined by following formula:
q
m=C/(1-β
4)
0.5×ξ×π/4×d
2(2△P?ρ
1)
0.5
q
v＝q
m/ρ
1
q
m: mass rate Kg/s
q
v: volumetric flow rate m
3/ s
C: efflux coefficient dimensionless
ξ: inflatable coefficient dimensionless
D: the throttle diameter m of throttling element
△ P: differential pressure Pa
ρ
1: fluid density Kg/m
3
For avoiding winter because of connecting pipe 6 frozen blocks, can take following design:
(1) with connecting pipe 6 vertical design;
(2) under the permission of condition, drop to connecting pipe 6 length minimum;
(3) overstriking connecting pipe 6 calibers;
(4) with differential pressure transmitter 5 gauge outfit at right angle settings.
It is as follows that points for attention of the present utility model are installed:
(1) pipeline of throttling orifice plate 3 and fluid parameter will be installed should conform to the standard orifice plate design.
(2) notice that throttling orifice plate 3 at ducted installation direction, makes fluid flow to dirty end face from the upstream face of throttling element 7.
(3) throttling orifice plate 3 should be perpendicular to conduit axis.
(4) throttling orifice plate 3 should be installed in two sections has between the constant cross-section circular straighttube section.
(5) if want a nearly step to improve the measuring accuracy of throttling orifice plate 3, straight length has the enough length before and after guaranteeing, can connect in addition " rectifier flows ".
(6) install after, guarantee that orifice plate pressure tappings 1 is high-end and the bottom pressure is normal, there is no leakage phenomenon.
Claims (1)
1. simple and easy orifice flowmeter of well head is characterized in that:
Throttling element (7) is located in throttling orifice plate (3) center pit, and throttling orifice plate (3) is located at by between bolted upstream pressure flange (2) and downstream pressure flange (4) end face; Upstream pressure flange (2) and downstream pressure flange (4) are provided with orifice plate pressure tappings (1) radially; Connecting pipe (6) one ends connect orifice plate pressure tappings (1), and the other end connects differential pressure transmitter (5); The temperature transmitter (8) of differential pressure transmitter (5), connecting tube is connected 9 with pressure unit) all be connected with data radio (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220592315 CN202903248U (en) | 2012-11-12 | 2012-11-12 | Simple orifice plate flowmeter for wellheads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220592315 CN202903248U (en) | 2012-11-12 | 2012-11-12 | Simple orifice plate flowmeter for wellheads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202903248U true CN202903248U (en) | 2013-04-24 |
Family
ID=48123907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220592315 Expired - Fee Related CN202903248U (en) | 2012-11-12 | 2012-11-12 | Simple orifice plate flowmeter for wellheads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202903248U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104133048A (en) * | 2014-08-01 | 2014-11-05 | 淮南润成科技股份有限公司 | Gas extraction-exhaust multiparameter monitoring device for mine |
| CN105021238A (en) * | 2015-08-12 | 2015-11-04 | 成都国光电子仪表有限责任公司 | Throttle mechanism high in interchangeability |
| CN107290008A (en) * | 2017-06-28 | 2017-10-24 | 中国石油天然气股份有限公司 | A kind of orifice plate vortex street gas-liquid metering device and its computational methods |
| CN111537137A (en) * | 2020-05-19 | 2020-08-14 | 天津中材工程研究中心有限公司 | Static pressure measurement method for dust-containing gas pipeline |
-
2012
- 2012-11-12 CN CN 201220592315 patent/CN202903248U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104133048A (en) * | 2014-08-01 | 2014-11-05 | 淮南润成科技股份有限公司 | Gas extraction-exhaust multiparameter monitoring device for mine |
| CN105021238A (en) * | 2015-08-12 | 2015-11-04 | 成都国光电子仪表有限责任公司 | Throttle mechanism high in interchangeability |
| CN107290008A (en) * | 2017-06-28 | 2017-10-24 | 中国石油天然气股份有限公司 | A kind of orifice plate vortex street gas-liquid metering device and its computational methods |
| CN111537137A (en) * | 2020-05-19 | 2020-08-14 | 天津中材工程研究中心有限公司 | Static pressure measurement method for dust-containing gas pipeline |
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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: 20130424 Termination date: 20211112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |