CN2248779Y - Hydraulic type dynamic instrument for oil obtg. well - Google Patents
Hydraulic type dynamic instrument for oil obtg. well Download PDFInfo
- Publication number
- CN2248779Y CN2248779Y CN94247918U CN94247918U CN2248779Y CN 2248779 Y CN2248779 Y CN 2248779Y CN 94247918 U CN94247918 U CN 94247918U CN 94247918 U CN94247918 U CN 94247918U CN 2248779 Y CN2248779 Y CN 2248779Y
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- CN
- China
- Prior art keywords
- displacement
- signal
- load
- receiving system
- transducer
- 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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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a hydraulic dynamometer for diagnosing the operating condition of a rod oil pumping system. The utility model is composed of a load signal receiver, a displacement signal receiver, and a signal amplifying and processing device. The utility model can make use of a load sensor and a displacement sensor to receive a load signal and a displacement signal at each moment on a grounding optical rod; after the signals is amplified by an amplifying circuit, the signals can be transmitted to a computer; then, an indicator diagram can be displayed on the screen according to a preset program. Because the utility model adopts a high-sensitivity potentiometer as the displacement sensor, and an analog signal is outputted, the interference between the outputted analog signal and a load analog signal can be reduced, and the measurement precision can be enhanced.
Description
A kind of fluid pressure type pump dynamograph that is used to diagnose the rod pumping system working condition belongs to the tester in the petroleum production engineering of oil field.
At present, the detecting instrument of China's oil field oil pumping system working condition, what generally use is imitative West Germany SQ2 type pump dynamograph, it is the instrument of a kind of record polished rod (the sucker rod first order) load and displacement relation curve, but their certainties of measurement are lower, can not calculate and draw downhole dynagraph.Xi'an Communications University discloses a kind of pumpingh well numeral indicator, the patent No. is 87205901.4, this instrument is by load transducer and displacement transducer, measure the indicator card of rod pumping pump on ground, employing be homemade hydraulic jack load transducer and the displacement transducer formed by photoelectricity incremental encoder and serving train.The photoelectricity incremental encoder is by the fixing slit plate of rotating grating encoder, element such as infrarede emitting diode and photodiode is formed, but its cost is higher, on-the-spot use is easily impaired, and output is digital pulse signal, and there is the phenomenon of disturbing between the analog signal of load transducer output, the precision that influence is measured.
The purpose of this utility model is in order to overcome the load simulated signal that exists in the prior art and the displacement digital pulse signal phenomenon of mutual interference mutually, to provide a kind of certainty of measurement height, the pumpingh well fluid pressure type pump dynamograph that cost is low.
Description of drawings:
Fig. 1 is the formation block diagram of the utility model pumpingh well fluid pressure type pump dynamograph.
Fig. 2 is the structural representation of the utility model displacement transducer.
Among the figure: 1-hydraulic jack, 2-load transducer, 3-displacement line, 4-terminal box, 5-displacement transducer, 6-amplifying circuit, 7-interface board for computers, 8-gear, 9-potentiometer, 10-power transmission shaft.
The purpose of this utility model is achieved in that the utility model mainly receives dress by load signal Put, displacement signal receiving system and signal amplify, treating apparatus three parts form, wherein load signal connects Receiving apparatus is in series by hydraulic jack and load transducer, and the displacement signal receiving system is by displacement Line, terminal box and displacement transducer form, and signal amplifies, treating apparatus is by amplifying circuit, computer Interface board and computer form, and load signal receiving system and displacement signal receiving system are all electric with amplification The road joins, and amplifying circuit and interface board for computers join, and the sucker rod of rod pumping pump is transmission conductor, The instantaneous load signal and the displacement signal that receive on the polished rod of ground are by load transducer and displacement sensing Device, the signal of two kinds of sensor generations transfers to interface board for computers after amplifying circuit amplifies, calculate Machine demonstrates indicator card by giving fixed program at screen. Displacement transducer is by mutual interlock, the number of teeth Different two gears 8 and potentiometer 9 form, and the variation of polished rod displacement is to be driven by displacement line 3 Terminal box 4 rotates gear 8 through power transmission shaft 10, drives the free end rotation of potentiometer 9, and is different The anglec of rotation that displacement is corresponding different makes potentiometer 9 continually varying voltage letter occur at free end Number, realized the simulation output of displacement signal.
Effect of the present utility model is: utilize the high sensitivity potentiometer as displacement transducer, output be an analog signal, reduced and load simulated interference between signals, improved certainty of measurement, and cost is low, on-the-spot long service life.
Below in conjunction with accompanying drawing the utility model is further described:
The utility model mainly is made up of load signal receiving system, displacement signal receiving system and signal amplification, treating apparatus three parts as shown in Figure 1, wherein: the load signal receiving system is made up of hydraulic jack 1 and load transducer 2, the load of polished rod is passed to load transducer through hydraulic jack 1 hydraulic cavities with pressure, and load transducer changes this pressure into an analog electrical signal and transfers to amplifying circuit 6; The displacement signal receiving system is made up of displacement line 3, terminal box 4 and displacement transducer 5, as shown in Figure 2, displacement transducer 5 is made up of mutual interlock, the number of teeth different two gears 8 and potentiometer 9, the variation of polished rod displacement is to drive terminal box 4 by displacement line 3, through power transmission shaft 10 gear 8 is rotated, and the free end that drives potentiometer 9 rotates, the anglec of rotation that different displacements is corresponding different, make potentiometer 9 the continually varying voltage signal occur at free end, realized the simulation output of displacement signal, and this signal has been transferred to amplifying circuit 6; Signal amplifies, treating apparatus is made up of amplifying circuit 6, interface board for computers 7 and computer, after amplifying circuit will amplify from two kinds of analog signals of load sensor and displacement transducer, transfer to interface board for computers 7, computer demonstrates indicator card by giving fixed program on screen then, by analytical calculation, can accurately obtain the working condition of oil pumping system oil well to indicator card.
Claims (2)
1. pumpingh well fluid pressure type pump dynamograph that is used to diagnose the rod pumping system working condition, by the load signal receiving system, displacement signal receiving system and signal amplify, treating apparatus three parts are formed, wherein the load signal receiving system is in series by hydraulic jack (1) and load transducer (2), the displacement signal receiving system is by displacement line (3), terminal box (4) and displacement transducer (5) are formed, signal amplifies, treating apparatus is by amplifying circuit (6), interface board for computers (7) and computer are formed, it is characterized in that load signal receiving system and displacement signal receiving system all join with amplifying circuit (6), amplifying circuit (6) joins with interface board for computers (7), the sucker rod of rod pumping pump is a transmission conductor, the instantaneous load signal and the displacement signal that receive on the polished rod of ground, by load transducer (2) and displacement transducer (5), the signal of two kinds of sensor generations is after amplifying circuit (6) amplifies, transfer to interface board for computers (7), computer demonstrates indicator card by giving fixed program on screen.
2. according to the described pumpingh well fluid pressure type of claim 1 pump dynamograph, it is characterized in that displacement transducer (5) by mutual interlock but different two gears (8) and the potentiometers (9) of the number of teeth form, the variation of polished rod displacement drives terminal box (4) by displacement line (3), through power transmission shaft (10) gear (8) is rotated, drive the free end rotation of potentiometer (9), to different displacement signals, the corresponding different anglecs of rotation, potentiometer (9) the continually varying voltage signal occurs at free end, reaches the simulation output of displacement signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94247918U CN2248779Y (en) | 1994-12-22 | 1994-12-22 | Hydraulic type dynamic instrument for oil obtg. well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94247918U CN2248779Y (en) | 1994-12-22 | 1994-12-22 | Hydraulic type dynamic instrument for oil obtg. well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2248779Y true CN2248779Y (en) | 1997-03-05 |
Family
ID=33853001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94247918U Expired - Fee Related CN2248779Y (en) | 1994-12-22 | 1994-12-22 | Hydraulic type dynamic instrument for oil obtg. well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2248779Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10260500B2 (en) | 2017-05-15 | 2019-04-16 | General Electric Company | Downhole dynamometer and method of operation |
-
1994
- 1994-12-22 CN CN94247918U patent/CN2248779Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10260500B2 (en) | 2017-05-15 | 2019-04-16 | General Electric Company | Downhole dynamometer and method of operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |