CN201215539Y - Experimental equipment for evaluating influence of oil pumping rod to fatigue strength - Google Patents

Experimental equipment for evaluating influence of oil pumping rod to fatigue strength Download PDF

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Publication number
CN201215539Y
CN201215539Y CNU2008201081788U CN200820108178U CN201215539Y CN 201215539 Y CN201215539 Y CN 201215539Y CN U2008201081788 U CNU2008201081788 U CN U2008201081788U CN 200820108178 U CN200820108178 U CN 200820108178U CN 201215539 Y CN201215539 Y CN 201215539Y
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China
Prior art keywords
fatigue
point bending
sample
tension
roller
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Expired - Lifetime
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CNU2008201081788U
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Chinese (zh)
Inventor
黄锦滨
田斌
吴振宁
张庚娟
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Anton Oilfield Services Group Ltd
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Anton Oilfield Services Group Ltd
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Priority to CNU2008201081788U priority Critical patent/CN201215539Y/en
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Abstract

The utility model discloses a tester for evaluating the effect of the coat of a smooth sucker rod on the fatigue strength, which comprises a three-point flexing machine, a tension-tension fatigue tester and a sample. The three-point flexing machine comprises a pressing rolling wheel, a pressure head clip, a three-point flexing frame and a support roller. The tension-tension fatigue tester comprises an upper clip. The pressing rolling wheel and the pressure head clip of the three-point flexing machine are assembled integrally and are mounted in the upper clip of the tension-tension fatigue tester. The upper clip is connected with a control system via a sensor and a connecting line. The sample is transversely arranged on the support roller of the three-point flexing frame. The pressing rolling wheel is opposite to the rod-shape fatigue sample. The utility model combines the control system of the tension-tension fatigue tester and the base and the pressure head of the three-point flexing machine to process three-point flexing fatigue test, simulating the flexing fatigue process in lower 10 centimeters of the smooth sucker rod clip at oil field. The tester can effectively evaluate the effect of the coat on the fatigue strength of a smooth sucker rod.

Description

A kind of evaluating pumping oil polish rod coating is to the experimental facilities of fatigue strength influence
Technical field
The utility model relates to a kind of oil equipment field experimental facilities, and particularly a kind of evaluating pumping oil polish rod coating is to the experimental facilities of fatigue strength influence.
Background technology
Rod-pumped well all is the main oil production method in domestic and international oil field all the time.Along with being on the increase of current dark oil well, heavy oil wells and high water-cut well, the alloy coat polished rod has obtained being extensive use of with its excellent anticorrosion antiwear performance.But, the preparation process of alloy coat presents metallurgical binding between polished rod matrix and the coating because making, the existence of coating is also more and more crucial to the influence of the fatigue behaviour of oil pumping polish rod, and the on-the-spot polished rod more than 80% in oil field is fractured into the crooked fatigue fracture in the 10 centimeters scopes in clamp below.
Unspecial at present experimental technique at alloy coat polished rod fatigue behaviour, the universal method of each elephant and polished rod manufacturer still is to adopt the method for testing of common polished rod fatigue behaviour, be main reference SY/T5029-2006 sucker rod standard, adopt to draw-pulling fatigue experimental investigates the fatigue behaviour and the serviceable life of polished rod.
But the fatigue behaviour that in fact this drawing-pulling fatigue experimental method is investigated mostly is decided by the tensile strength of polished rod, and this method does not reflect the coating influence real to fatigue behaviour.
And for alloy coating pumping rod/polish rod, owing to the significant difference and the metallurgical binding of material between coating and the matrix, coating is easy to occur tired source and expands rapidly enter matrix relatively, makes that the crooked fatigue fracture of coating polished rod will be apparently higher than common no coating polished rod.Therefore, must determine the experimental facilities of a kind of effective evaluation pumping oil polish rod coating to its fatigue strength influence.
The utility model content
The utility model technical issues that need to address just are to overcome the defective of prior art, the experimental facilities of a kind of evaluating pumping oil polish rod coating to the fatigue strength influence is provided, it can pass through in conjunction with the control system of La-La fatigue experimental machine and the bearing and the pressure head of three point bending test machine, carry out the three-point bending torture test, realization adopts the utility model equipment can estimate coating effectively to the oil pumping polish rod INFLUENCE ON FATIGUE STRENGTH to the simulation of the bending fatigue process in the 10 centimeters scopes in on-the-spot oil pumping polish rod clamp below, oil field.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of evaluating pumping oil polish rod coating of the utility model is to the experimental facilities of fatigue strength influence, comprise the three point bending test machine, draw-pulling fatigue experimental machine and sample to be tested, described three point bending test machine comprises the roller of exerting pressure, pressure head clamp and three-point bending support and supporting roller, described drawing-pulling fatigue experimental machine comprises anchor clamps, exert pressure roller and the pressure head clamp of described three point bending test machine be assembled into one and be installed in draw-the last anchor clamps of pulling fatigue experimental machine in, the described anchor clamps of going up are connected with control system by sensor and connecting line, described sample is disposed across on the supporting roller of three-point bending support, and the roller of exerting pressure is over against bar-shaped fatigue testing specimen.
Described experimental facilities comprises pedestal, and described pedestal two ends are respectively arranged with support column, and the support column top is equipped with footstock, and the described anchor clamps of going up are installed on the footstock; On the pedestal, between two support columns the three point bending test machine base is installed, described three point bending test machine base two ends are separately installed with the three-point bending support, and described three-point bending cantilever tip is installed supporting roller, and described sample is disposed across on the supporting roller.
Described sample two ends are separately installed with sample end shielding card.
The course of work of the present utility model is: just pack into together after roller and the pressure head clamp assembling of exerting pressure of three point bending test machine draw-the last anchor clamps of pulling fatigue experimental machine in, and after bar-shaped fatigue testing specimen being disposed across on the supporting roller of three-point bending support, with sample end shielding card security protection being carried out at the sample two ends fixes, promptly adopt sheet metal that two ends are fixing gently, prevent that unexpectedly moving or splash from appearring in sample position, but fixation degree can not hinder the proper motion in the process of the test.Carry out the control of bending load, frequency and displacement by the control system and the roller of exerting pressure, reversed bending is tired to move along with pressure head is done under certain frequency bending load F effect to make sample.Wherein the setting of roller diameter D, span Ls, bending load F, frequency and displacement needs to take all factors into consideration in conjunction with actual conditions, GB/T 14452 metal bending mechanical test methods and SY/T5029 sucker rod standard.In the judgement of test findings, with sample rupture fully or the displacement of surface corresponding pressure head when obvious crackle occurring as standard.
The beneficial effect of the technical scheme that the utility model provides is:
1. be convenient to truly reflect the influence of coating, help screening coating and control product quality the oil pumping polish rod fatigue behaviour;
2. help the on-the-spot alloy coating pumping rod/polish rod of selecting in oil field, reduce the accident of crooked fatigue fracture.
Description of drawings
Fig. 1 is an experimental facilities structural representation described in the utility model.
Among the figure: 1 exert pressure anchor clamps on roller, 2 pressure head clamps, 3 three-point bending supports, 4 supporting rollers, 5,6 sensors and connecting line, 7 control system, 8 samples, 9 pedestals, 10 support columns, 11 footstocks, 12 three point bending test machine bases, 13 shielding cards.
Fig. 2 is the experimental principle figure of experimental facilities described in the utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model embodiment is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of evaluating pumping oil polish rod coating of the utility model is to the experimental facilities of fatigue strength influence, comprise the three point bending test machine, draw-pulling fatigue experimental machine and sample to be tested, described three point bending test machine comprises the roller 1 of exerting pressure, pressure head clamp 2 and three-point bending support 3 and supporting roller 4, described drawing-pulling fatigue experimental machine comprises anchor clamps 5, exert pressure roller and the pressure head clamp of described three point bending test machine be assembled into one and be installed in draw-the last anchor clamps of pulling fatigue experimental machine in, the described anchor clamps of going up are connected with control system 7 by sensor and connecting line 6, described sample 8 is disposed across on the supporting roller of three-point bending support, and the roller of exerting pressure is over against bar-shaped fatigue testing specimen.
Described experimental facilities comprises pedestal 9, and described pedestal two ends are respectively arranged with support column 10, and the support column top is equipped with footstock 11, and the described anchor clamps of going up are installed on the footstock; On the pedestal, between two support columns three point bending test machine base 12 is installed, described three point bending test machine base two ends are separately installed with the three-point bending support, and described three-point bending cantilever tip is installed supporting roller, and described sample is disposed across on the supporting roller.
Described sample two ends are separately installed with sample end shielding card 13.
The course of work of the present utility model is: just pack into together after roller and the pressure head clamp assembling of exerting pressure of three point bending test machine draw-the last anchor clamps of pulling fatigue experimental machine in, and after bar-shaped fatigue testing specimen being disposed across on the supporting roller of three-point bending support, with sample end shielding card security protection being carried out at the sample two ends fixes, promptly adopt sheet metal that two ends are fixing gently, prevent that unexpectedly moving or splash from appearring in sample position, but fixation degree can not hinder the proper motion in the process of the test.The principle of experimental facilities described in the utility model is carried out the control of bending load, frequency and displacement by the control system and the roller of exerting pressure as shown in Figure 2, and reversed bending is tired to move along with pressure head is done under certain frequency bending load F effect to make sample.Wherein the setting of roller diameter D, span Ls, bending load F, frequency and displacement needs to take all factors into consideration in conjunction with actual conditions, GB/T 14452 metal bending mechanical test methods and SY/T5029 sucker rod standard.In the judgement of test findings, with sample rupture fully or the displacement of surface corresponding pressure head when obvious crackle occurring as standard.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (3)

1, a kind of evaluating pumping oil polish rod coating is to the experimental facilities of fatigue strength influence, comprise the three point bending test machine, draw-pulling fatigue experimental machine and sample to be tested, described three point bending test machine comprises the roller of exerting pressure, pressure head clamp and three-point bending support and supporting roller, described drawing-pulling fatigue experimental machine comprises anchor clamps, it is characterized in that: exert pressure roller and the pressure head clamp of described three point bending test machine be assembled into one and be installed in draw-the last anchor clamps of pulling fatigue experimental machine in, the described anchor clamps of going up are connected with control system by sensor and connecting line, described sample is disposed across on the supporting roller of three-point bending support, and the roller of exerting pressure is over against bar-shaped fatigue testing specimen.
2, evaluating pumping oil polish rod coating as claimed in claim 1 is to the experimental facilities of fatigue strength influence, it is characterized in that: described experimental facilities comprises pedestal, described pedestal two ends are respectively arranged with support column, and the support column top is equipped with footstock, and the described anchor clamps of going up are installed on the footstock; On the pedestal, between two support columns the three point bending test machine base is installed, described three point bending test machine base two ends are separately installed with the three-point bending support, and described three-point bending cantilever tip is installed supporting roller, and described sample is disposed across on the supporting roller.
3, evaluating pumping oil polish rod coating as claimed in claim 2 is to the experimental facilities of fatigue strength influence, and it is characterized in that: described sample two ends are separately installed with sample end shielding card.
CNU2008201081788U 2008-05-26 2008-05-26 Experimental equipment for evaluating influence of oil pumping rod to fatigue strength Expired - Lifetime CN201215539Y (en)

Priority Applications (1)

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CNU2008201081788U CN201215539Y (en) 2008-05-26 2008-05-26 Experimental equipment for evaluating influence of oil pumping rod to fatigue strength

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Application Number Priority Date Filing Date Title
CNU2008201081788U CN201215539Y (en) 2008-05-26 2008-05-26 Experimental equipment for evaluating influence of oil pumping rod to fatigue strength

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102353599A (en) * 2011-06-07 2012-02-15 吉林大学 Piezoelectricity-driven high-frequency fatigue testing machine
CN103196751A (en) * 2013-02-22 2013-07-10 中国科学院地质与地球物理研究所 Rock strength testing device
CN104677749A (en) * 2015-03-18 2015-06-03 北京科技大学 Metal diaphragm bending fatigue measurement device and method for diaphragm compressor
RU2572402C1 (en) * 2014-12-25 2016-01-10 Публичное акционерное общество "Татнефть" имени В.Д. Шашина (ПАО "Татнефть" им. В.Д. Шашина) Method and device for determination of strength properties of oil well pump rods
CN109142041A (en) * 2018-11-02 2019-01-04 中国人民解放军空军工程大学 A method of detection sample sliding and bending deformation
RU193104U1 (en) * 2019-05-24 2019-10-15 Общество с ограниченной ответственностью "Инокар-Сервис" Sucker rod flaw detector
CN111678862A (en) * 2020-05-28 2020-09-18 江森自控日立万宝压缩机(广州)有限公司 Stator and detection method for slot varnish adhesion effect of stator

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102353599A (en) * 2011-06-07 2012-02-15 吉林大学 Piezoelectricity-driven high-frequency fatigue testing machine
CN103196751A (en) * 2013-02-22 2013-07-10 中国科学院地质与地球物理研究所 Rock strength testing device
RU2572402C1 (en) * 2014-12-25 2016-01-10 Публичное акционерное общество "Татнефть" имени В.Д. Шашина (ПАО "Татнефть" им. В.Д. Шашина) Method and device for determination of strength properties of oil well pump rods
CN104677749A (en) * 2015-03-18 2015-06-03 北京科技大学 Metal diaphragm bending fatigue measurement device and method for diaphragm compressor
CN109142041A (en) * 2018-11-02 2019-01-04 中国人民解放军空军工程大学 A method of detection sample sliding and bending deformation
RU193104U1 (en) * 2019-05-24 2019-10-15 Общество с ограниченной ответственностью "Инокар-Сервис" Sucker rod flaw detector
CN111678862A (en) * 2020-05-28 2020-09-18 江森自控日立万宝压缩机(广州)有限公司 Stator and detection method for slot varnish adhesion effect of stator
CN111678862B (en) * 2020-05-28 2022-07-12 江森自控日立万宝压缩机(广州)有限公司 Stator and detection method for slot varnish adhesion effect of stator

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C14 Grant of patent or utility model
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AV01 Patent right actively abandoned

Granted publication date: 20090401

Effective date of abandoning: 20080526