CN200972421Y - Fixed load sensor for pumping well measuring diagram - Google Patents
Fixed load sensor for pumping well measuring diagram Download PDFInfo
- Publication number
- CN200972421Y CN200972421Y CNU2006200105803U CN200620010580U CN200972421Y CN 200972421 Y CN200972421 Y CN 200972421Y CN U2006200105803 U CNU2006200105803 U CN U2006200105803U CN 200620010580 U CN200620010580 U CN 200620010580U CN 200972421 Y CN200972421 Y CN 200972421Y
- Authority
- CN
- China
- Prior art keywords
- strain gauges
- elastic body
- temperature compensation
- transverse
- longitudinal strain
- 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
Links
Images
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model discloses a fixed type load sensor for pumping unit well testing indicator diagram used in the petroleum industry, which is used when pumping unit well tests indicator diagram. The device comprises a hollow elastic body. Ten strain gauges are pasted on the outer surface of the elastic body, in which four strain gauges are transverse strain gauges, four strain gauges are vertical strain gauges and two strain gauges are temperature compensation strain gauges. The transverse strain gauges and vertical strain gauges are distributed at intervals along the elastic body, the two temperature compensation strain gauges are pasted below two diagonal vertical strain gauges, and the pasting directions are in accord with the vertical strain gauges, and the center angle of each strain gauge is a arbitrary angle among 44-46 degrees. Compared with the existing sensors, the utility model increases the uniformity of strained induction, and reduces the measurement error caused by the eccentricity of field installation.
Description
Technical field
The utility model belongs to the Test Equipment of petroleum industry petroleum production engineering, and the fixed load transducer of particularly a kind of rod-pumped well measuring indicator diagram uses when the rod-pumped well measuring indicator diagram.
Background technology
In oil-field development, the working condition of rod-pumped well downhole pump is understood by load-position diagram, and in the indicator diagram measurement process, the precision of load transducer and job stability are the key factors that influences the load-position diagram quality.The test job of oil field load-position diagram is perplexed in the drift of sensor always, drifting problem is the main cause that causes the load-position diagram distortion, sensor signal enlargement factor linear change will cause the load data error in value, and the nonlinear drift of enlargement factor can cause the change of load-position diagram shape.In the actual application, the load-position diagram distortion meeting that nonlinear drift causes directly influences engineering technical personnel the judgement of underground working is taked wrong technological measure to oil well, brings enormous economic loss simultaneously thereby influence crude production rate.At present, the load transducer of domestic each oil field use when test has three kinds: portable, the non-hydraulic pressure of hydraulic pressure is portable, fixed.These three kinds of sensors though all there is separately advantage, have also exposed some shortcomings separately in long-term use.The each measurement of portable load transducer all will load, unload, and to the polished rod wearing and tearing greatly, the test job amount is big, and test process is dangerous high; Do not support on-line measurement, can't satisfy the requirement of digitizing oilfield construction.Fixed sensor has overcome the shortcoming of portable sensor, can satisfy the characteristics of existing field produces, be sensor developing direction from now on, but because the big shortcoming of long-term loading drift that existing fixed sensor exists, large-scale promotion application is restricted.
Summary of the invention
The purpose of this utility model provides the fixed load transducer of a kind of rod-pumped well measuring indicator diagram, overcome existing fixed load transducer and load the big defective of drift, further improve the accuracy of load-position diagram data, for the field production management personnel provide the job information of downhole pump more accurately.
The present technique solution can reach above-mentioned purpose: the fixed load transducer of a kind of rod-pumped well measuring indicator diagram comprises elastic body, hollow.Outer elastomeric surface is pasted with 10 foil gauges, is respectively 4 transverse strain sheets, 4 longitudinal strain sheets and 2 temperature compensation foil gauges; Transverse strain sheet and longitudinal strain sheet are spaced apart along the elastic body circular section, 2 temperature compensation foil gauges are attached to the below of the longitudinal strain sheet at 2 diagonal angles, it is consistent with the longitudinal strain sheet to paste direction, and the center angle of each foil gauge is arbitrarily angled during 44 degree are spent to 46.
The utility model compared with prior art has following useful effect: measure with foil gauge and adopt four transverse strain sheets and four longitudinal strain sheets.With respect to existing sensor, increased stressed induction homogeneity, reduced because the measuring error that on-the-spot setting-up eccentricity causes.On elastic body, increase by two special-purpose temperature compensation foil gauges, transverse strain sheet and longitudinal strain sheet that they and load measurement are used connect into bridge circuit jointly, because the resistance value of the foil gauge that load measurement is used rises with temperature and increases, and the resistance value of temperature compensation foil gauge reduces with the temperature rising, the drift of the output signal that the automatic offset sensor of measurement loop energy that constitutes thus brings owing to environment temperature changes.Adopt that low temperature floats, the integrated transporting discharging of high-amplification-factor, reduce number of stages of amplification simultaneously, with the temperature of signal amplification circuit float reduce to minimum.Further improved the accuracy of load-position diagram data,, thereby provide believable reference for field produces operation for the field production management personnel provide the job information of downhole pump more accurately.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present utility model.
Fig. 2 is that the utility model A-A is to sectional view.
Fig. 3 is a circuit diagram of the present utility model.
Embodiment
Below in conjunction with embodiment the utility model is done further detailed description: referring to accompanying drawing 1 and Fig. 2, the fixed load transducer of a kind of rod-pumped well measuring indicator diagram comprises elastic body 4, hollow.Elastic body 4 outside surfaces are pasted with 10 foil gauges, are respectively 2,4 longitudinal strain sheets 1 of 4 transverse strain sheets and 2 temperature compensation foil gauges 3; Transverse strain sheet 2 is spaced apart along the circular section of elastic body 4 with longitudinal strain sheet 1,2 temperature compensation foil gauges 3 are attached to the below of the longitudinal strain sheet 1 at 2 diagonal angles, it is consistent with longitudinal strain sheet 1 to paste direction, also be vertically to paste, the center angle of each foil gauge be 44 the degree to 46 the degree in arbitrarily angled, with 45 the degree be the best.Wherein the resistance value of longitudinal strain sheet 1 and transverse strain sheet 2 is 350 ohm.The stickup direction of temperature compensation foil gauge 3 is consistent with longitudinal strain sheet 1, also is vertically to paste, and its resistance value is 22 ohm.By shown in Figure 3,4 longitudinal strain sheets 1 and 4 transverse strain sheets 2 and 2 temperature strain sheets 3 are connected into a bridge circuit U1, the working power of this circuit adopts direct current 5V.As shown in Figure 3, bridge circuit U1 is output after amplifying circuit U2 amplifies, and this device can be directly converted to the load of 0-140KN the voltage output of 0 ~ 2.5V.Amplifying circuit U2 adopts the AD620 integrated operational amplifier, and enlargement factor is about 400 times.
Claims (2)
1, the fixed load transducer of a kind of rod-pumped well measuring indicator diagram, comprise elastic body (4), hollow is characterized in that elastic body (4) appearance is pasted with 10 foil gauges, be respectively 4 transverse strain sheets (2), 4 longitudinal strain sheets (1) and 2 temperature compensation foil gauges (3); Transverse strain sheet (2) is spaced apart along elastic body (4) circular section with longitudinal strain sheet (1), 2 temperature compensation foil gauges (3) are attached to the below of the longitudinal strain sheet (1) at 2 diagonal angles, it is consistent with longitudinal strain sheet (1) to paste direction, and the center angle of each foil gauge is arbitrarily angled during 44 degree are spent to 46.
2, the fixed load transducer of a kind of rod-pumped well measuring indicator diagram according to claim 1, it is characterized in that all longitudinal strain sheets (1), transverse strain sheet (2) and temperature compensation foil gauge (3) are connected to form a bridge circuit U1 output after amplifying circuit U2 amplifies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200105803U CN200972421Y (en) | 2006-09-29 | 2006-09-29 | Fixed load sensor for pumping well measuring diagram |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200105803U CN200972421Y (en) | 2006-09-29 | 2006-09-29 | Fixed load sensor for pumping well measuring diagram |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200972421Y true CN200972421Y (en) | 2007-11-07 |
Family
ID=38883676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200105803U Expired - Fee Related CN200972421Y (en) | 2006-09-29 | 2006-09-29 | Fixed load sensor for pumping well measuring diagram |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200972421Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564669A (en) * | 2011-12-02 | 2012-07-11 | 贵州航天凯山石油仪器有限公司 | Clamp fixation-free non-stop pumping load testing method and device |
| CN104792442A (en) * | 2015-04-11 | 2015-07-22 | 蚌埠日月电子科技有限责任公司 | Oil pumping unit polish rod force measuring device |
| CN105588669A (en) * | 2015-12-11 | 2016-05-18 | 广西柳工机械股份有限公司 | Shaft pin-type three-way force-measuring sensor |
| CN108330941A (en) * | 2018-01-29 | 2018-07-27 | 中国海洋大学 | A kind of pressure-compensated feeler inspection probe and ocean static cone penetration equipment |
| CN108801531A (en) * | 2018-08-06 | 2018-11-13 | 海伯森技术（深圳）有限公司 | A kind of six-dimension force sensor and the method for improving six-dimension force sensor temperature drift |
-
2006
- 2006-09-29 CN CNU2006200105803U patent/CN200972421Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564669A (en) * | 2011-12-02 | 2012-07-11 | 贵州航天凯山石油仪器有限公司 | Clamp fixation-free non-stop pumping load testing method and device |
| CN104792442A (en) * | 2015-04-11 | 2015-07-22 | 蚌埠日月电子科技有限责任公司 | Oil pumping unit polish rod force measuring device |
| CN105588669A (en) * | 2015-12-11 | 2016-05-18 | 广西柳工机械股份有限公司 | Shaft pin-type three-way force-measuring sensor |
| CN108330941A (en) * | 2018-01-29 | 2018-07-27 | 中国海洋大学 | A kind of pressure-compensated feeler inspection probe and ocean static cone penetration equipment |
| CN108330941B (en) * | 2018-01-29 | 2020-03-13 | 中国海洋大学 | Pressure compensation type sounding probe and ocean static sounding equipment |
| CN108801531A (en) * | 2018-08-06 | 2018-11-13 | 海伯森技术（深圳）有限公司 | A kind of six-dimension force sensor and the method for improving six-dimension force sensor temperature drift |
| CN108801531B (en) * | 2018-08-06 | 2024-03-22 | 海伯森技术（深圳）有限公司 | Six-dimensional force sensor and method for improving temperature drift of six-dimensional force sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200972421Y (en) | Fixed load sensor for pumping well measuring diagram | |
| CN101839798B (en) | Device for hypersonic pitching dynamic test | |
| CN202903128U (en) | Strain measuring device for concrete structural body | |
| CN203455227U (en) | Point load test instrument | |
| CN102175137B (en) | Extensometer for measuring micro-deformation of component | |
| CN205175951U (en) | Structure crackle on -line monitoring system | |
| CN206248252U (en) | A kind of anchor pole axial direction dynamometer | |
| CN102818729A (en) | Apparatus and method for detecting flexural bearing capacity of building wallboard | |
| CN104181002A (en) | Uniform water pressure simulation loading device and method for tunnel structure model test | |
| CN202522583U (en) | Resistance strain transducer type device for detecting current speed in pipeline | |
| CN203148372U (en) | Micro resistor type displacement meter based on full-bridge electrometric method | |
| CN204903070U (en) | Wind turbine blades surface pressure measures cover and measurement system thereof | |
| CN201429424Y (en) | Differential resistance sensor detection circuit | |
| CN107063524B (en) | Oil well rod pipe lateral force tester and testing method | |
| CN206281604U (en) | A kind of high-precision pressure sensor tester | |
| CN201885844U (en) | Pressure measurement device for pulsatory high-pressure corrosive medium | |
| CN206648643U (en) | Based on piezoresistive transducer DCM BD settlement monitoring level meters | |
| CN201852551U (en) | Straightness check tool for inner holes of cylinder jackets | |
| CN205274560U (en) | Apply to conveyer belt material detecting system of industrial machinery | |
| CN203798485U (en) | High-temperature pressure transmitter | |
| CN204924517U (en) | Portable electronic dynamometer | |
| CN204457739U (en) | Water injection well tubular column atress testing arrangement | |
| CN105092139A (en) | Wind mill blade surface pressure measuring cover and measuring system thereof | |
| CN103175465A (en) | Minisize resistance-type displacement meter based on full-bridge electrometric method | |
| CN209214814U (en) | The micro- molten force snesor of glass |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071107 Termination date: 20100929 |