CN200985786Y - Pressure transmitter - Google Patents
Pressure transmitter Download PDFInfo
- Publication number
- CN200985786Y CN200985786Y CNU2006201230035U CN200620123003U CN200985786Y CN 200985786 Y CN200985786 Y CN 200985786Y CN U2006201230035 U CNU2006201230035 U CN U2006201230035U CN 200620123003 U CN200620123003 U CN 200620123003U CN 200985786 Y CN200985786 Y CN 200985786Y
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- pressure
- ball valve
- stainless steel
- steel ball
- connecting piece
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- Expired - Lifetime
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Abstract
A pressure transmitter used for the pressure data signal collection of the heavy oil well is provided. The utility model is composed of a sensor, a module circuit, a pressure gauge, a screw connecting piece, and a stainless steel ball valve as well as a stub tube joint; wherein the stub tube joint can be welded on an oil pipe and is connected with the stainless steel ball valve; wherein a connecting nut is connected to the other end of the stainless steel ball valve, and the connecting nut is provided with a cap nut composed of an internal thread and an external thread; and the tubular screw connecting piece is fixed in the connecting nut; and the pressure gauge is arranged at the upper end of the screw connecting piece, while a pressure sensor at the lower end of the screw connecting piece; wherein the pressure sensor at the lower end of the screw connecting piece can directly contact the raw oil inside of the oil pipe, precisely and timely collecting the pressure data. The utility model has the advantages of explosion resistance, corrosion resistance, high precision and good stability as well as convenient dismantlement and maintenance, suitable for online testing and collecting the outdoor heavy oil products under the pressure conveyed without thermal insulation state, thus satisfying the requirements of automatic control data collection and safe production.
Description
Technical field
The utility model relates to oil well pressure data acquisition technology field, particularly a kind of well head pressure transmitter, a kind of pressure data signals collecting pressure transmitter that is applicable to the high viscous oil oil well.
Background technology
At present, recover the oil and produce the geological condition complexity of block in the oil field, and the producing well station disperses, and the centralized production control difficulty is big, and most of oil reservoir production practice technical sophistication.By artificial timing tours of inspection every day well mouth of oil well pressure meter, check wellhead back pressure data and record.This artificial image data mode must increase labor strength, influences real-time, the accuracy of oil recovery data, and influence is recovered the oil and produced.The remote oil well that some are equipped with the oil well long distance control system does not partly have the tracing thermal-insulating device at the oil well production pressure acquisition, and the pressure transmitter that especially is installed in well head winter is the production wells mouth pressure normally.Its main cause is that the pressure sensor installation site of pressure transmitter is inappropriate.Pressure sensor is away from petroleum pipeline, and the crude oil heat in the petroleum pipeline can not be utilized.Make oil well long distance control system image data inaccurate, can not get effective monitoring, prevent and control, even can cause Oil Well Back Pressure too high that pump efficiency reduces, and has a strong impact on the oil well crude output.
The utility model content
The purpose of this utility model provides a kind of pressure transmitter, change the installation site of present pressure sensor, enable normally to gather the wellhead back pressure data, and in winter of cold weather, this transmitter is not limited by crude oil property, can gather the Oil Well Back Pressure data accurately, in real time.And have explosion-proof, corrosion-resistant, high accuracy, good stability, band and press advantages such as dismounting is easy to maintenance, good practical effect.
The technical solution adopted in the utility model is: pressure transmitter is made up of pressure sensor, modular circuit, pressure meter, threaded connector, stainless steel ball valve and source nipple, source nipple can weld on the oil pipeline, is connected with stainless steel ball valve on the source nipple.The stainless steel ball valve other end is connected with the attaching nut, and the attaching nut is one internal thread and externally threaded nut.The threaded connector of tubulose is fixed in the attaching nut.The upper end of threaded connector is connected with pressure meter.There is pressure sensor the lower end of threaded connector, and the pressure sensor of threaded connector lower end can directly contact the crude oil in the petroleum pipeline.
For the threaded connector bottom can contact crude oil in the petroleum pipeline, threaded connector (3) length is between 60-120mm.
In order to gather the transmission pressure signal, pressure sensor link block circuit, modular circuit is installed in the pressure meter.
Beneficial effect is: threaded connector is screwed into and passes stainless steel ball valve, the pressure sensor of threaded connector lower end directly contacts the crude oil in the petroleum pipeline.Crude oil in the crude oil in the petroleum pipeline flows, and variations in temperature is little.The operating temperature of sensor is in temperature constant state substantially, can not solidify because of the crude oil that is cold, and loses the sensor effect.The threaded connector teflon gasket fully seals pressure transmitter and stainless steel ball valve, by crude oil in pressure sensor and the oil pipe directly, fully contact, the line pressure data is gathered in real time.
The installation and removal pressure transmitter does not need to stop well on the short circuit head welding oil pipeline, can be with to press-fit and unload.Pressure sensor is to there being certain-length to connect screw thread between the gauge outfit, also there is corresponding with it screw thread the stainless steel ball valve upper end, during the setting pressure transmitter, at first stainless steel ball valve is welded on the crude oil pipeline, pressure transmitter is screwed in the stainless steel ball valve of initially cutting out, when being screwed into certain depth, stainless steel ball valve is opened fully.Even pressure is arranged in the pipeline, can be from the stainless steel ball valve leakage of oil yet.Pressure transmitter is tightened on the stainless steel ball valve module then; The dismounting pressure transmitter is according to the above-mentioned steps reverse operating.
The outdoor height that can be applicable to of the utility model pressure inverting apparatus coagulates the online detection collection of pressure of the conveying of oil product under no keeping warm mode, need not to consider crude oil property problem in the pipeline.Can be with under situation about not stopping production and press dismounting to safeguard, satisfy automatic control data collection and safety in production requirement, make pressure data gather reliability, accuracy raising, application prospect is very wide.
On-the-spot on probation through the oil field, through using more than a year, successfully solved in the oil well long distance control system well head pressure back pressure data collection problems, the particularly oil well of crude oil property difference in the winter time.
Description of drawings
Fig. 1 is the generalized section of the installation site relation of the utility model pressure transmitter.
Fig. 2 is that the utility model pressure transmitter is installed in the schematic diagram on the petroleum pipeline.
Among the figure, 1,100% line pressure table, 2, modular circuit, 3, threaded connector, 4, pressure sensor, 5, teflon gasket, 6, the attaching nut, 7, stainless steel ball valve, 8, source nipple, 9, petroleum pipeline.
The specific embodiment
Embodiment: the ginseng oil well be damp 10-9 well, this well crude oil property " three high is low ", promptly high specific gravity (20 ℃, 0.9777g/cm
3), high viscosity (50 ℃, 3066.9 MPas), high colloidal bitumen (33.25%), middle low-freezing (27 ℃), the content of wax 0.75%.The wellhead back pressure data can't be measured, be checked to this well in the winter time.After adopting the utility model pressure transmitter, accurate, complete through the test production wells mouth pressure data in a winter.
The pressure transmitter technical data that adopts: measurement category: 0～8.0MPa; Output signal: 4～20mA; Accuracy class: 0.1%0.25% 0.5%; Operating voltage: 24V (12～36VDC); Operating temperature :-20～+ 85 ℃; Stability: ± 0.2% range/year; Measuring media: corrosive gas, liquid; Explosive-proof grade: ExibIICT6; Degree of protection: IP67.
Claims (6)
1, a kind of pressure transmitter, by pressure sensor (4), modular circuit (2), pressure meter (1), threaded connector (3), ball valve (7) and source nipple (8) are formed, it is characterized in that: be connected with ball valve (7) on the source nipple (8), ball valve (7) other end is connected with attaching nut (6), attaching nut (6) is one internal thread and externally threaded nut, the threaded connector of tubulose (3) is fixed in the attaching nut (6), the upper end of threaded connector (3) is connected with pressure meter (1), there is pressure sensor (4) lower end of threaded connector (3), pressure sensor (4) link block circuit (2).
2, pressure transmitter according to claim 1 is characterized in that: described threaded connector (3) length is between 60-120mm.
3, pressure transmitter according to claim 1 is characterized in that: pressure sensor (4) link block circuit (2), modular circuit (2) is installed in the pressure meter (1).
4, pressure transmitter according to claim 1 is characterized in that: between threaded connector (3) and the attaching nut (6) teflon gasket (5) is arranged.
5, according to claim 1 or 2 or 3 or 4 described pressure inverting apparatuses, it is characterized in that: described pressure sensor (4) measurement category is 0～4.0MPa.
6, according to claim 1 or 2 or 3 or 4 described pressure transmitters, it is characterized in that: described ball valve (7) is stainless steel ball valve (7), and nominal diameter is 32mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201230035U CN200985786Y (en) | 2006-07-28 | 2006-07-28 | Pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201230035U CN200985786Y (en) | 2006-07-28 | 2006-07-28 | Pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200985786Y true CN200985786Y (en) | 2007-12-05 |
Family
ID=38915244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201230035U Expired - Lifetime CN200985786Y (en) | 2006-07-28 | 2006-07-28 | Pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200985786Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769812A (en) * | 2008-12-29 | 2010-07-07 | 上海自动化仪表股份有限公司 | Indirect connecting method between throttle valve and pressure gauge |
| CN101928574A (en) * | 2009-06-19 | 2010-12-29 | 中冶成工上海五冶建设有限公司 | Installing method of dry quenching apparatus |
| CN101769776B (en) * | 2010-01-22 | 2013-11-20 | 中国轻工业南宁设计工程有限公司 | Liquid-level pressure measuring device capable of being maintained on line |
| CN105587312A (en) * | 2016-03-10 | 2016-05-18 | 西南石油大学 | High-pressure water injection well head pressure gauge connector and matched wrench thereof |
| CN113834600A (en) * | 2021-09-23 | 2021-12-24 | 北京昆仑海岸科技股份有限公司 | Anti-freezing pressure transmitter |
-
2006
- 2006-07-28 CN CNU2006201230035U patent/CN200985786Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769812A (en) * | 2008-12-29 | 2010-07-07 | 上海自动化仪表股份有限公司 | Indirect connecting method between throttle valve and pressure gauge |
| CN101928574A (en) * | 2009-06-19 | 2010-12-29 | 中冶成工上海五冶建设有限公司 | Installing method of dry quenching apparatus |
| CN101769776B (en) * | 2010-01-22 | 2013-11-20 | 中国轻工业南宁设计工程有限公司 | Liquid-level pressure measuring device capable of being maintained on line |
| CN105587312A (en) * | 2016-03-10 | 2016-05-18 | 西南石油大学 | High-pressure water injection well head pressure gauge connector and matched wrench thereof |
| CN105587312B (en) * | 2016-03-10 | 2019-05-03 | 西南石油大学 | High-pressure water injection well well head pressure gauge connector and its associated spanner |
| CN113834600A (en) * | 2021-09-23 | 2021-12-24 | 北京昆仑海岸科技股份有限公司 | Anti-freezing pressure transmitter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071205 |
|
| EXPY | Termination of patent right or utility model |