CN106052836A - Method for carrying out online calibration on load sensor on oil pumping machine - Google Patents
Method for carrying out online calibration on load sensor on oil pumping machine Download PDFInfo
- Publication number
- CN106052836A CN106052836A CN201610703954.8A CN201610703954A CN106052836A CN 106052836 A CN106052836 A CN 106052836A CN 201610703954 A CN201610703954 A CN 201610703954A CN 106052836 A CN106052836 A CN 106052836A
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- China
- Prior art keywords
- load
- calibrated
- load sensor
- calibration
- sensor
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
Abstract
The invention provides a method for carrying out online calibration on a load sensor on an oil pumping machine. A standard load sensor is installed on a rope hanging device of the oil pumping device, the standard load sensor and a load sensor to be calibrated are identically stressed when a polished rod of the oil pumping device moves up and down, indicator diagrams of the standard load sensor and the load sensor to be calibrated are simultaneously collected, the minimum loads and maximum loads which are measured by the indicator diagrams and borne by the polished rod are respectively compared, the errors of the minimum load and maximum load measured by the load sensor to be calibrated are obtained, the calibration coefficient of the load sensor to be calibrated is corrected by the errors so as to enable the measuring error of the load sensor to be calibrated is within an allowable range after calibration, then the standard load sensor is removed, and the calibration is completed. According to the invention, the metrologically certificated load is utilized to calibrate the load to be detected on the oil pumping machine, and a metrological transmission method is utilized to enable online calibration on the load sensor to be calibrated.
Description
Technical field
The present invention relates to the calibration steps of weighing device, specifically a kind of load transducer online school on oil pumper
Accurate method.
Background technology
At present, the polished rod eye of oil pumper is typically each provided with load transducer, in order to measure the load of polished rod, to obtain
Obtain the indicator card of rod-pumped well.Load transducer on oil pumper, during long-term use, can gradually produce load drift,
In order to ensure the accuracy of measurement, currently used method is, is regularly disassembled by the load transducer on oil pumper,
Go to be sent to metrological service's detection, calibration, be reloaded back on oil pumper after having calibrated.The method there is the problem that sensor
Censorship needs shut down and wait, affect the operation of oil pumper；Dismounting uses year long sensor cumbersome, the manpower of consumption, time
Between more.
Summary of the invention
It is an object of the invention to provide a kind of load transducer method of on-line calibration on oil pumper, the method can be
Do not dismantle under load transducer situation to be calibrated, to its on-line calibration.
For achieving the above object, the present invention uses below scheme: load transducer is the method for on-line calibration on oil pumper,
Normal loading sensor is installed on the polished rod eye of oil pumper, makes the load to be calibrated on normal loading sensor and polished rod eye
Lotus sensor, with equal stress during the up and down motion of oil-extractor polish-rod, gathers normal loading sensor and load to be calibrated simultaneously
The indicator card of sensor, indicator card the minimum load born by the polished rod that both are measured, maximum load value compare,
Obtain minimum load, the error amount of maximum load that load transducer to be calibrated is surveyed, treat calibration load according to error amount and pass
The calibration coefficient of sensor is modified so that load transducer to be calibrated be calibrated after measurement error in allowed limits,
Then removing normal loading sensor, calibration completes.
From such scheme, in the method that the present invention provides, the load using China Metrology Accreditation to cross goes to calibrate on oil pumper
Load to be checked, the method transmitted by metering so that load transducer to be calibrated obtains on-line calibration.
The method calibration that the present invention provides is reliable, simple to operate, and it can avoid the dismounting of load transducer to be calibrated, joint
Save a large amount of human and material resources and downtime.
Accompanying drawing explanation
Fig. 1 is in one embodiment of the invention, load transducer to be calibrated and the indicator card of normal loading sensor；
Fig. 2 is in one embodiment of the invention, the load transducer after calibration and the indicator card of normal loading sensor.
Detailed description of the invention
The present invention is further illustrated below in conjunction with an embodiment and accompanying drawing.
Selecting an oil pumper, load transducer on which is calibrated, and basic operational steps is as follows:
1, when oil pumper stops, being installed on the polished rod eye of oil pumper by normal loading sensor, normal loading passes
The installation form of the load transducer that the installation of sensor is to be calibrated with on oil pumper is identical；The installation of standard load transducer
Requirement is, it and load transducer to be calibrated are all in polished rod eye, with the equal stress of the up and down motion of oil-extractor polish-rod.
2, after starting oil pumper stable operation 2 minutes, gather normal loading sensor and load sensing to be calibrated simultaneously
The indicator card of device, it is thus achieved that as it is shown in figure 1, in Fig. 1, figure 2 is the indicator card of load transducer to be calibrated, figure 1 is standard
The indicator card of load transducer.
3, both indicator cards are compared, the minimum load both polished rod that both are measured born, maximum load
Charge values is compared, it is thus achieved that minimum load that load transducer to be calibrated is surveyed, the error amount of maximum load.By by Fig. 1
In two indicator cards compare, it was therefore concluded that: normal loading sensor and load transducer to be calibrated are each measured
Maximum load essentially identical with the difference of minimum load, the error amount of the minimum load that load transducer to be calibrated is surveyed is
9.34KN。
4, treat the calibration coefficient of calibration load sensor according to error amount 9.34KN to be modified, after correction, obtain Fig. 2,
As shown in Figure 2, after finishing, indicator card 1 is substantially superimposed together with 2.Correction completes, and thus, can make load to be calibrated
Sensor be calibrated after measurement error in allowed limits.
5, after completing above-mentioned work, removing normal loading sensor, calibration completes.
In above example, each measured maximum load of normal loading sensor and load transducer to be calibrated with
The difference of minimum load is essentially identical, and both measured minimum load value deviations, minimum load deviation value is write
In load transducer inside chip to be calibrated, complete calibration operation.
Also another situation is, the maximum that normal loading sensor and load transducer to be calibrated are each measured
Load differs with the difference of minimum load, then with the maximum of normal loading sensor, minima as reference standard value,
Load transducer inside chip to be calibrated is carried out calibration coefficient correction, after correction so that normal loading sensor with treat school
The each measured maximum load of accurate load transducer is essentially identical with the difference of minimum load, additionally and ensure that both are
Side crops industry value is identical.Above-described calibration coefficient is modified as ordinary skill in the art means.
Claims (1)
1. load transducer method of on-line calibration on oil pumper, it is characterised in that: it is installed to take out by normal loading sensor
On the polished rod eye of oil machine, make upper with oil-extractor polish-rod of normal loading sensor and the load transducer to be calibrated on polished rod eye
Equal stress during lower motion, gathers the indicator card of normal loading sensor and load transducer to be calibrated, by indicator card simultaneously
Minimum load, the maximum load value born by the polished rod that both are measured are compared, it is thus achieved that load transducer institute to be calibrated
The minimum load of survey, the error amount of maximum load, the calibration coefficient treating calibration load sensor according to error amount is modified,
Measurement error after load transducer to be calibrated is calibrated in allowed limits, then removes normal loading sensor,
Calibration completes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610703954.8A CN106052836A (en) | 2016-08-22 | 2016-08-22 | Method for carrying out online calibration on load sensor on oil pumping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610703954.8A CN106052836A (en) | 2016-08-22 | 2016-08-22 | Method for carrying out online calibration on load sensor on oil pumping machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106052836A true CN106052836A (en) | 2016-10-26 |
Family
ID=57195455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610703954.8A Pending CN106052836A (en) | 2016-08-22 | 2016-08-22 | Method for carrying out online calibration on load sensor on oil pumping machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106052836A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289985A (en) * | 2017-06-21 | 2017-10-24 | 中国科学院工程热物理研究所 | On-line proving and the dynamic measurement system and method for compensation |
| CN107575211A (en) * | 2017-09-11 | 2018-01-12 | 北京安控科技股份有限公司 | A kind of online calibration method of pump unit dynamometer |
| CN114858318A (en) * | 2021-02-03 | 2022-08-05 | 中国石油天然气集团有限公司 | Wireless injection head load calibrator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004198176A (en) * | 2002-12-17 | 2004-07-15 | Yazaki Corp | Calibration support method, calibration support device, and calibration support system |
| CN101261169A (en) * | 2008-04-21 | 2008-09-10 | 济南新吉纳远程测控有限公司 | Crossbeam type oil pumping machine feed sensor calibration system and its calibration method |
| CN102455238A (en) * | 2011-10-14 | 2012-05-16 | 贵州航天凯山石油仪器有限公司 | Online calibration method of indicator diagram test equipment and connection structure thereof |
| CN103105265A (en) * | 2011-11-11 | 2013-05-15 | 沈阳金凯瑞科技有限公司 | On-line monitor for strain gauge load cell |
-
2016
- 2016-08-22 CN CN201610703954.8A patent/CN106052836A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004198176A (en) * | 2002-12-17 | 2004-07-15 | Yazaki Corp | Calibration support method, calibration support device, and calibration support system |
| CN101261169A (en) * | 2008-04-21 | 2008-09-10 | 济南新吉纳远程测控有限公司 | Crossbeam type oil pumping machine feed sensor calibration system and its calibration method |
| CN102455238A (en) * | 2011-10-14 | 2012-05-16 | 贵州航天凯山石油仪器有限公司 | Online calibration method of indicator diagram test equipment and connection structure thereof |
| CN103105265A (en) * | 2011-11-11 | 2013-05-15 | 沈阳金凯瑞科技有限公司 | On-line monitor for strain gauge load cell |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289985A (en) * | 2017-06-21 | 2017-10-24 | 中国科学院工程热物理研究所 | On-line proving and the dynamic measurement system and method for compensation |
| CN107575211A (en) * | 2017-09-11 | 2018-01-12 | 北京安控科技股份有限公司 | A kind of online calibration method of pump unit dynamometer |
| CN107575211B (en) * | 2017-09-11 | 2020-05-05 | 北京安控科技股份有限公司 | Online calibration method of pumping unit indicator |
| CN114858318A (en) * | 2021-02-03 | 2022-08-05 | 中国石油天然气集团有限公司 | Wireless injection head load calibrator |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161026 |