CN105986806A - Special vibration string type load sensor for oil sucking machine - Google Patents
Special vibration string type load sensor for oil sucking machine Download PDFInfo
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- CN105986806A CN105986806A CN201510072062.8A CN201510072062A CN105986806A CN 105986806 A CN105986806 A CN 105986806A CN 201510072062 A CN201510072062 A CN 201510072062A CN 105986806 A CN105986806 A CN 105986806A
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- coil
- string
- oil pumper
- wire
- type vibration
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- 238000000034 method Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 abstract 5
- 239000010959 steel Substances 0.000 abstract 5
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000005086 pumping Methods 0.000 description 12
- 238000009434 installation Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 239000003129 oil well Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a special vibration string type load sensor for an oil sucking machine. The special vibration string type load sensor comprises a steel string and installing support seats, wherein the two ends of the steel string are fixed onto the two installing support seats; a coil is arranged in the middle section position of the steel string; the coil is covered by a coil case arranged at the outside; a protection pipe is arranged at the outer side of the steel string; one end of the protection pipe is connected with the installing support seats, and one end of the protection pipe is connected with the coil case; a temperature indicator is arranged inside the coil case; and a cable outwards extends from the coil in a connected way. A regulating screw used for connecting the oil sucking machine and indirectly regulating the tensioning of the steel string is arranged on the installing support frame. Two signal output modes are used: one is frequency signal output, and the other one is current signal output. The special vibration string type load sensor has the characteristics that the measuring precision is high; the anti-jamming capability is high; the influence by electrical parameters is small; the zero point drifting is small; the influence by the temperature is small; the performance is stable and reliable; the vibration resistance is realized; and the service life is long, and the like.
Description
Technical field
The present invention relates to sensor used for oil-field oil pumper, specifically a kind of oil pumper special type vibration wire load transducer.
Background technology
Pumping production is one of most important link during current oil exploitation, and the most most widely used is beam pumping unit, belt type pumping unit machine, chain type oil pump machine etc., occupies very important status in oil recovery machiner.Reflection oil pumping machine polished rod load is referred to as polished rod surface dynamometer card with the figure of its change in displacement rule, is the closed curve measured in one suction period of oil pumper.The indicator card of oil well is by the measurement of oil pumper load and displacement and analysis, diagnosing down-hole pump working condition and liquid measure analysis.
At present, the acquisition of load data, is mostly to be measured by the force cell of installation polished rod eye and square holding-down clip for finish rod.The type broadly falls into resistance-strain type of dynamometer sensor, is made up of metallic resilient material and paster strain resistor, by electrical bridge principle, the signal of power is changed into signal of telecommunication output.Owing to metal material and strain resistor are under the effect of long-term large alternating load, cause this kind of sensor accuracy and job stability all can be affected, need to demarcate frequently or change.It is the main cause causing merit figure distortion that this impact causes drifting problem, linearly causes the error of load data numerical value, nonlinear drift, can cause the change of merit diagram shape.In actual application, the merit figure distortion that two class drifts cause can directly affect engineers and technicians' judgement to underground working, and oil well is taked the technological measure of mistake, thus affect crude output and bring huge economic loss simultaneously.Meanwhile, generally there is installation and change inconvenience, zero point is easily drifted about, and test process exists the drawbacks such as potential safety hazard.
Summary of the invention
It is an object of the invention to provide that a kind of certainty of measurement is high, capacity of resisting disturbance strong, by electrical quantity affected little, null offset is little, temperature influence is little, stable and reliable for performance, the oil pumper special type vibration wire load transducer of vibration resistance, life-span length.
In order to reach above-mentioned purpose, present invention employs following technical scheme, oil pumper special type vibration wire load transducer, including string wire, erection support, the two ends of described string wire are fixed on two erection supports, arrange coil in string wire interlude position.
Described coil, by outside coil case parcel, arranges protection pipe outside described string wire, protection pipe one end is connected with erection support, and one end is connected with coil case.
Arranging thermometer inside described coil case, described coil outwards connects cable.
Oil pumper the set screw of Indirect method string wire tensioning it is provided for connection in described mounting bracket.
Having two kinds of mode signal outputs, one is frequency signal output, and two is current signal output.
String wire frequency of vibration variable quantity is changed into the signal of telecommunication as type vibration wire sensing element, coil by described string wire.
Compared to prior art, the method have the advantages that
The present invention use oil pumper special type vibration wire load transducer to complete beam type, belt-type, chain-type and have vertical load-bearing pylon oil pumper load data measure.Using the string wire of tensioning as sensing element, the string wire natural frequency of vibration is relevant with the size of tensile force, and the variable quantity of vibratory string frequency of vibration can characterize the size of stress.When tested walking beam on pumping units generation STRESS VARIATION, sensor is stretched or compresses, and this displacement transfer is transformed into the change of vibratory string stress to vibrating wire sensor, thus changes the frequency of vibration of vibratory string.Solenoid exciting vibratory string also measures its frequency of vibration, and frequency signal is through circuit board collection and is wirelessly transmitted to tester main frame, and this frequency signal can the temperature value of synchronous reaction sensor point.This sensor is the sensor of a kind of non-electricity measure, directly export the natural frequency of vibration signal of vibratory string, have certainty of measurement height, capacity of resisting disturbance is strong, affected the features such as little, null offset is little, temperature influence is little, stable and reliable for performance, vibration resistance, life-span length by electrical quantity, compared with the most commonly used resistance strain measurement principle load transducer, there is prominent superiority.
Accompanying drawing explanation
Fig. 1 is the structural representation of oil pumper of the present invention special type vibration wire load transducer；
Fig. 2 is the present invention use scheme of installation at beam pumping unit；
Fig. 3 present invention is at the use scheme of installation of belt type pumping unit.
In figure, 1 walking beam；2 support shafts；3 oil pumper special type vibration wire load transducer；4 caput Equi Asini；5 pylons；6 bases；7 come and go frame；8 belt rollers；9 load belts；10 polished rods；11 erection supports；12 string wires；13 protection pipes；14 regulation screws；15 coils；16 cables；17 thermometeies；18 coil cases.
Detailed description of the invention
Detailed description for the present invention and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides reference and purposes of discussion, is not used for being any limitation as the present invention.
Accompanying drawing 1 is structure and the scheme of installation of oil pumper of the present invention special type vibration wire load transducer.Oil pumper special type vibration wire load transducer 3 is to be fixed by two erection supports 11, connects string wire 12 between bearing, and string wire 12 outside protection pipe 13 is protected.Bearing is fixed on walking beam on pumping units 1 or plateau machine polished rod 10 by regulation screw 14.During use, the change of the stress on erection support 11 causes string wire 12 to deform, and this micro-strain amount can be measured with the tension force of string wire element and frequency of vibration.The strain square being proportional to sensor of frequency of vibration.Sensor is to be driven cell winding 15 by excitation chain, and when the frequency of pumping signal and the natural frequency of string wire 12 are close, string wire 12 is rapidly reached resonance state.The variable quantity of its eigentone can characterize the size of pulling force suffered by string; by corresponding measuring circuit; the most available signal of telecommunication becoming certain relation with pulling force; the signal of telecommunication reaches backstage by cable 16; coil 15 and thermometer 17 are protected by coil case 18, and thermometer 17 is measured temperature and carried out data correction on backstage.
Accompanying drawing 2 is the present invention use scheme of installation at beam pumping unit；In accompanying drawing 1, the walking beam 1 of oil pumper is arranged on support shaft 2 and rotates around support shaft 2, is currently under horizontal level；The two ends of walking beam 1 are in poised state by active force and the power end of the load such as sucker rod in the pulling force effect of vertical direction component respectively.The oil pumper special type vibration wire load transducer 3 of this patent is arranged on walking beam upper surface, and support shaft 2 is at caput Equi Asini 4 direction 40cm.
Accompanying drawing 3 is the present invention use scheme of installation at belt type pumping unit；In accompanying drawing 2, the pylon 5 of belt feeder is vertically mounted on column foot base 6, the entablature on round frame 7 connect and walk around the load belt 9 of upper belt cylinder 8 to drive polished rod 10 sucker rod, oil well pump to move back and forth.The oil pumper special type vibration wire load transducer 3 of this patent is arranged on the position near polished rod eye, the polished rod upper end；
The load measurement principle of beam machine: the walking beam 1 of oil pumper is considered as the double cantilever beam of the square-section of an intermediate supports both sides stress, the load active force to sucker rod, is equivalent to the cross force acting on the free end of walking beam 1 by caput Equi Asini 4.According to Hooke's law (after solid material stress, between stress and strain (unit deformation amount) in material linear), the walking beam 1 of oil pumper can produce micron-sized trace deformation under the effect of alternate load, is detected the size of the born alternate load of walking beam 1 by the special oil pumper special type vibration wire load transducer 3 being arranged on walking beam 1.
Load measurement principle for belt-type, chain-type and the oil pumper with vertical load-bearing pylon: the type oil pumper is all to be connected by the entablature on round frame 7 to walk around the load belt 9 of upper belt cylinder 8 to drive polished rod 10(sucker rod, oil well pump) move back and forth oil pumping.The load of sucker rod, down-hole pump and underground liquid eventually acts on the polished rod of the type oil pumper 10, the effect of this power can make polished rod produce micro-deformation micron order, is detected the size of alternate load that pylon born by the oil pumper special type vibration wire load transducer 3 being arranged on polished rod.
Oil pumper special type vibration wire load transducer, using the string wire of tensioning as sensing element, is a kind of metallic cord to strain resonant transducer as sensing element.The variable quantity of its eigentone of metallic cord of regular length can characterize the size of pulling force suffered by string, by corresponding measuring circuit, obtains the signal of telecommunication becoming certain relation with pulling force, the i.e. load data of oil pumper；Having two kinds of mode signal outputs, one is frequency signal output, and two is current signal output.Mode signal output, can support the use with the on-the-spot RTU of Oil Well Data Acquisition System.It is applicable to oil exploitation industry, beam type, belt-type, chain-type and there is the measuring of oil pumper load data of vertical load-bearing pylon.
The foregoing is only presently preferred embodiments of the present invention, be not used to limit the scope of the claims of the present invention, other use the equivalent of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (6)
1. oil pumper special type vibration wire load transducer, it is characterised in that include that string wire, erection support, the two ends of described string wire are fixed on two erection supports, coil is set in string wire interlude position.
Oil pumper the most according to claim 1 special type vibration wire load transducer, it is characterised in that described coil, by outside coil case parcel, arranges protection pipe outside described string wire, protection pipe one end is connected with erection support, and one end is connected with coil case.
Oil pumper the most according to claim 2 special type vibration wire load transducer, it is characterised in that arrange thermometer inside described coil case, described coil outwards connects cable.
Oil pumper the most according to claim 1 special type vibration wire load transducer, it is characterised in that be provided for connection to oil pumper the set screw of Indirect method string wire tensioning in described mounting bracket.
Oil pumper the most according to claim 1 special type vibration wire load transducer, it is characterised in that having two kinds of mode signal outputs, one is frequency signal output, and two is current signal output.
Oil pumper the most according to claim 1 special type vibration wire load transducer, it is characterised in that string wire frequency of vibration variable quantity is changed into the signal of telecommunication as type vibration wire sensing element, coil by described string wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072062.8A CN105986806A (en) | 2015-02-11 | 2015-02-11 | Special vibration string type load sensor for oil sucking machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072062.8A CN105986806A (en) | 2015-02-11 | 2015-02-11 | Special vibration string type load sensor for oil sucking machine |
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| Publication Number | Publication Date |
|---|---|
| CN105986806A true CN105986806A (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510072062.8A Pending CN105986806A (en) | 2015-02-11 | 2015-02-11 | Special vibration string type load sensor for oil sucking machine |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080184800A1 (en) * | 2007-02-06 | 2008-08-07 | Campbell Scientific, Inc. | Vibrating Wire Sensor Using Spectral Analysis |
| CN101561239A (en) * | 2009-05-25 | 2009-10-21 | 重庆交通大学 | Vibrating wire strain gauge with controllable truss wire |
| KR20110006472A (en) * | 2009-07-14 | 2011-01-20 | 주식회사 디에스텍 | System to measure a resonant frequency of a vibrating-wire sensor using a digital counter |
| CN102419150A (en) * | 2011-09-01 | 2012-04-18 | 泰安科大洛赛尔传感技术有限公司 | Vibrating string type displacement sensor and working method thereof |
| CN202709986U (en) * | 2012-04-18 | 2013-01-30 | 苏州筑邦测控科技有限公司 | Restorable vibrating wire type surface strainmeter |
| CN103335750A (en) * | 2013-07-19 | 2013-10-02 | 江西飞尚科技有限公司 | Method for monitoring pumping unit dynamic load based on vibrating wire sensor |
| CN104278984A (en) * | 2013-07-12 | 2015-01-14 | 中国石油化工股份有限公司 | Micrometric displacement indicator for beam pumper |
| CN204476392U (en) * | 2015-02-11 | 2015-07-15 | 中国石油化工股份有限公司 | The special type vibration wire load transducer of a kind of oil pumper |
-
2015
- 2015-02-11 CN CN201510072062.8A patent/CN105986806A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080184800A1 (en) * | 2007-02-06 | 2008-08-07 | Campbell Scientific, Inc. | Vibrating Wire Sensor Using Spectral Analysis |
| CN101561239A (en) * | 2009-05-25 | 2009-10-21 | 重庆交通大学 | Vibrating wire strain gauge with controllable truss wire |
| KR20110006472A (en) * | 2009-07-14 | 2011-01-20 | 주식회사 디에스텍 | System to measure a resonant frequency of a vibrating-wire sensor using a digital counter |
| CN102419150A (en) * | 2011-09-01 | 2012-04-18 | 泰安科大洛赛尔传感技术有限公司 | Vibrating string type displacement sensor and working method thereof |
| CN202709986U (en) * | 2012-04-18 | 2013-01-30 | 苏州筑邦测控科技有限公司 | Restorable vibrating wire type surface strainmeter |
| CN104278984A (en) * | 2013-07-12 | 2015-01-14 | 中国石油化工股份有限公司 | Micrometric displacement indicator for beam pumper |
| CN103335750A (en) * | 2013-07-19 | 2013-10-02 | 江西飞尚科技有限公司 | Method for monitoring pumping unit dynamic load based on vibrating wire sensor |
| CN204476392U (en) * | 2015-02-11 | 2015-07-15 | 中国石油化工股份有限公司 | The special type vibration wire load transducer of a kind of oil pumper |
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Application publication date: 20161005 |