CN101153835B - Sliding desk type casing tube abrasion testing machine - Google Patents

Sliding desk type casing tube abrasion testing machine Download PDF

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Publication number
CN101153835B
CN101153835B CN2006101134193A CN200610113419A CN101153835B CN 101153835 B CN101153835 B CN 101153835B CN 2006101134193 A CN2006101134193 A CN 2006101134193A CN 200610113419 A CN200610113419 A CN 200610113419A CN 101153835 B CN101153835 B CN 101153835B
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CN
China
Prior art keywords
testing machine
platform
test
sliding
test specimen
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CN2006101134193A
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Chinese (zh)
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CN101153835A (en
Inventor
张来斌
樊建春
温东
储胜利
李�杰
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中国石油大学(北京)
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Publication of CN101153835A publication Critical patent/CN101153835A/en
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Abstract

The invention is a sliding way sleeve abrasion testing machine, which comprises a transmission system, an excitation system, a clamping system and a rack. A first test piece is fixed and clamped on a rotating transmission shaft of the transmission system; a second test piece is arranged corresponding to the first test piece on the clamping system and the transmission system drives the first test piece to rotate around the axis. The rack is provided with at least one sliding platform and the transmission system is arranged on the sliding platform. The excitation system can drive the sliding platform to vibrate up and down to drive the first test piece to impulse the second test piece while rotating. The testing machine overcomes the disadvantage of the prior abrasion testing machine which is incapable of satisfying the requirement on studying the impulse and sliding composite abrasion test between petroleum the drilling rod and the sleeve under the conditions of circulating medium and can perform systematic investigation on the impulse and sliding composite abrasion of various materials of large dimension between the petroleum the drilling rod and the sleeve.

Description

Sliding desk type casing tube abrasion testing machine

Technical field

The present invention relates to a kind of tribology test unit, wear working condition between main simulation Process of Oil Well Drilling middle-deep well section drilling rod (being mainly drill pipe sub) and the sleeve pipe, drilling rod is a rigidity cylinder rod member, sleeve pipe is the round steel pipe that certain wall thickness is arranged, and drilling rod is attended by radially impact to internal surface of sleeve pipe at inside pipe casing in the axle center rotation of oneself in actual drilling process.This testing machine for sleeve pipe and the drill rod abrasion mechanism of research under this operating mode provides research technique, can be drilling rod sleeve pipe abrasionproof technology on the other hand evaluation means is provided on the one hand in order to this relative motion between simulation drilling rod and sleeve pipe.When not opening excitation system, this testing machine can carry out the sliding wear testing of the petroleum casing pipe of quiet contact load and pulsation contact load in addition.In addition, this testing machine also can be used for simulating the tribology system of other analogues, especially impacts the wear test under slide compound working condition or the medium situation in the tribology test field.

Background technology

Be used to estimate oil drill rocker and shell material abrasion test means under compound working condition of impact-slip or the medium situation at present, mainly contain the reciprocal impact wear testing machine that utilizes the pin dish testing machine, cam or the crank-driven that are added with vibrating device, pulsatile impact abrasion tester and the various lubrication test instrument that fork loads.

(1), pin dish testing machine principle and characteristics

Pin dish testing machine is that the disk test specimen of pressing close to a rotation after utilizing a static pin shape test specimen to pressurize is realized material friction and polishing machine are measured.This testing machine becomes a kind of tribology test method that the most generally adopts because of simple.By the small vibration wear test under the lubricant medium situation also can be arranged after improving.Because of testing machine small-sized, so sample dimensions is very little, impulsive force is little, can not the Simulation of Complex working condition tests.

(2), reciprocal impact wear testing machine

Back and forth impact wear testing machine is by the driven by motor crankshaft rotating, thereby realizes the to-and-fro movement of first test specimen at the second test specimen inner chamber.This testing machine can be simulated the relative motion between piston-cylinder preferably, can not simulate other friction system more widely.The testing machine deficiency is no medium circulation, and simulated condition is simple, narrow application range.

(3), pulsatile impact abrasion tester

The pulsatile impact abrasion tester uses eccentric stiffener to produce exciting force, is sent on the rotation test specimen by lever, can realize bigger impulsive force, can not adjust but impulse form is single, does not have lubricant medium.

(4), Maurer company casing tube abrasion testing machine

As shown in Figure 5, Maurer company has developed a kind of testing machine at the wearing and tearing of drilling rod and sleeve pipe specially, tool-joint sample 1 ' is rotated by a direct motor drive, thereby being installed in, sleeve pipe sample 2 ' can do the simulation of small size longitudinal oscillation realization on the air bag hunting gear to hole deviation, a lever load maintainer is housed under this device, drives by an air lift pump 3 ' and realize loading.Drilling fluid 4 ' by steam piano by pipeline transportation to sleeve pipe and joint surface in contact.Contact force size during test and the wear extent of sleeve pipe 2 ' and joint 1 ' are gathered with the casing wear sensor 7 ' that loads hinged some place by the contact force sensor 5 ' and joint sample 1 ' the lip-deep tool-joint wear sensor 6 ' that are installed in respectively on the load maintainer in real time by computer control.

The Maurer testing machine has the quite good detecting system, but this testing machine is merely able to simulate the skimming wear working condition under the action of static load, and the impact slip synergic wear operating mode that can not cause at the transverse vibration of deep-well, ultra deep well bottom is carried out correlative study.

Because the defective that above-mentioned known abrasion tester exists, the inventor is to be determined to be engaged in the experience that this area is researched and developed for many years, made with it for solving the problem that above-mentioned known technology exists, and obtains the present invention after development research repeatedly finally.

Summary of the invention

The technical problem to be solved in the present invention is: provide a kind of sliding desk type casing tube abrasion testing machine, improving or to overcome the defective of above-mentioned known testing machine, for oil drill rocker and casing wear research provide new research technique.

Technical solution of the present invention is: a kind of sliding desk type casing tube abrasion testing machine, it comprises kinematic train, excitation system, mounting and clamping system and frame, geometrical clamp is held first test specimen on the rotating drive shaft of described kinematic train, described mounting and clamping system is to being equiped with second test specimen in the first test specimen place, this first test specimen of described transmission system drives rotates around the axle center, it is characterized in that, described frame is provided with at least one sliding platform, described kinematic train is arranged on this sliding platform, described excitation system can drive described sliding platform up-down vibration, impacts second test specimen that is fixed on the mounting and clamping system thereby drive this first test specimen in rotation.

Aforesaid sliding desk type casing tube abrasion testing machine, wherein: described first test specimen is a test bar, described second test specimen is a tubular test coupon; Be fixed with many root posts on the support of described frame, described column is provided with the multilayer platform, and at least one is above-mentioned sliding platform in the described platform.

Aforesaid sliding desk type casing tube abrasion testing machine, wherein: be fixed with four root posts on this support, and column is provided with two-layer at least sliding platform, wherein upper and lower sliding platform is linked together, be supported on four root posts by each four groups of compression spring integral hanging up and down, excitation system drives this two-layer sliding platform up-down vibration.

Aforesaid sliding desk type casing tube abrasion testing machine, wherein: the kinematic train of described testing machine comprises the drive speed-adjusting motor successively by the transmission order, main pulley, belt, from belt pulley and rotating drive shaft, wherein, this drive speed-adjusting motor, main pulley is installed on the sliding platform, describedly be installed on the lower slider platform from belt pulley and rotating drive shaft, described rotating drive shaft is made up of multistage, respectively by shaft coupling, belt, torque sensor is realized connecting, first test specimen is installed on this rotating drive shaft, drives and realize this test specimen rotation by rotating drive shaft.

Aforesaid sliding desk type casing tube abrasion testing machine, wherein: described mounting and clamping system comprises mounting seat and goes up clamping device and the adjusting gear that is provided with, wherein: be equiped with linear bearing in the mounting seat, the bottom is equipped with four smooth guide rods, this guide rod can move up and down along the axis of the linear bearing in the base, this clamping device comprises a branch sleeve pipe clamper and a clamper base in one, adjusting gear between clamper base and mounting seat is a worm-gear driven push rod regulator, it is by step motor drive, with the height of regulating sleeve pepe gripper, thereby realization is to the adjustment of two test specimen contact pressures or lash space.

Aforesaid sliding desk type casing tube abrasion testing machine, wherein: the excitation system of described testing machine comprises the exciting buncher, impacts transmission shaft, spring bearing, in be provided with eccentric needle bearing and push rod, wherein, spring bearing is installed on the base platform, be used for supporting the impact transmission shaft, the exciting buncher drives when impacting the transmission shaft rotation, the interior eccentric wheel of needle bearing that drive is installed on this impact transmission shaft rotates, when eccentric wheel is in lift, the eccentric wheel that rotates promotes push rod and moves upward, thereby it is up to drive sliding platform; When eccentric wheel turns over peak, sliding platform falls after rise under gravity and the acting in conjunction of compression spring elastic force, thereby has realized the up-down vibration of two-layer sliding platform and indirect securement first test specimen on platform.

Aforesaid sliding desk type casing tube abrasion testing machine, wherein: described testing machine also comprises a Hydrauservo System, the top of described framework pillar also is provided with a hydraulic platform, the hydraulic jack of this Hydrauservo System is fixedly mounted on the hydraulic platform, the oil liquid pressure of various ways is provided by hydraulic workstation and control system, under the effect of this oil liquid pressure, piston mandril in the hydraulic jack transmits loading force to sliding platform by the portal that is installed in sliding platform rotation buncher top, this loading force is applied between first and second test specimens by sliding platform, the compression spring of the scalable pre compressed magnitude on this Hydrauservo System and the testing machine column combines, multiple test contact pressure type and slide unit return parameter can be provided, thereby realize static load, the experimental enviroment simulation that pulsed load and hydraulic shock load load.

Aforesaid sliding desk type casing tube abrasion testing machine, wherein: described sliding desk type casing tube abrasion testing machine also comprises a circulation system, this circulation system is made up of pump, valve group, flowmeter, stirrer, this circulation system constitutes the adjustable multiphase medium lubricating system of flow, the lubricating condition of various flows moving medium is provided to abrasion tester, flowmeter is used for online detection flow, and stirrer is installed in the suction pit, keeps solid phase dispersed system performance.

Aforesaid sliding desk type casing tube abrasion testing machine, wherein: described mounting and clamping system comprises mounting seat and goes up clamping device and the adjusting gear that is provided with, wherein: be equiped with linear bearing in the mounting seat, the bottom is equipped with four smooth guide rods, this guide rod can move up and down along the axis of the linear bearing in the base, this clamping device comprises a branch sleeve pipe clamper and a clamper base in one, adjusting gear between clamper base and mounting seat is a worm-gear driven push rod regulator, it is by step motor drive, with the height of regulating sleeve pepe gripper, thereby realization is to the adjustment of two test specimen contact pressures or lash space; The excitation system of described testing machine comprises the exciting buncher, impacts transmission shaft, spring bearing, in be provided with eccentric needle bearing and push rod, wherein, spring bearing is installed on the base platform, be used for supporting the impact transmission shaft, the exciting buncher drives when impacting the transmission shaft rotation, and the eccentric wheel that drives in the needle bearing that is installed on this impact transmission shaft rotates, when eccentric wheel is in lift, the eccentric wheel that rotates promotes push rod and moves upward, thereby it is up to drive sliding platform; When eccentric wheel turns over peak, sliding platform falls after rise under gravity and the acting in conjunction of compression spring elastic force, thereby has realized the up-down vibration of two-layer sliding platform and indirect securement first test specimen on platform; Described testing machine also comprises Hydrauservo System, the circulation system and detection control system, wherein said Hydrauservo System comprises: the top of described framework pillar is provided with a hydraulic platform, the hydraulic jack of this Hydrauservo System is fixedly mounted on the hydraulic platform, the oil liquid pressure of various ways is provided by hydraulic workstation and control system, under the effect of this oil liquid pressure, piston mandril in the hydraulic jack transmits loading force to sliding platform by the portal that is installed in sliding platform rotation buncher top, this loading force is applied between first and second test specimens by sliding platform, the compression spring of the scalable pre compressed magnitude on this Hydrauservo System and the testing machine column combines, multiple test contact pressure type and slide unit return parameter can be provided, thereby realize static load, the experimental enviroment simulation that pulsed load and hydraulic shock load load; This circulation system is made up of pump, valve group, flowmeter, stirrer, this circulation system constitutes the adjustable multiphase medium lubricating system of flow, the lubricating condition of various flows moving medium is provided to abrasion tester, flowmeter is used for online detection flow, stirrer is installed in the suction pit, keeps solid phase dispersed system performance; This detection control system is formed by detecting and control two parts: the test section comprises many group sensors and data collectors, be used to realize online detection to test figure, and the combination in any that comprises torque sensor, vibration displacement sensor, infrared temperature sensor, force cell, acceleration transducer, displacement transducer, speed probe, flow sensor, position transducer, pattern sensor, data collector obtain the data of sensor as aforementioned and convert digital signal to be sent to control section; Control section is used for the operational factor of testing machine is controlled in real time, it comprises PLC, first frequency converter, second frequency converter, driver and proportion magnetic valve, after wherein PLC obtains the data of each sensor, adjust the drive speed-adjusting rotating speed of motor by first frequency converter, adjust the rotating speed of exciting buncher by second frequency converter, control the servomotor of mounting and clamping system by driver, to regulate its clamped height of first test specimen, reach the hydraulic jack of controlling Hydrauservo System by this proportion magnetic valve.

Aforesaid sliding desk type casing tube abrasion testing machine, wherein: on the upper end mounting and clamping system of described tubular test coupon displacement transducer is installed, with online detection developmental tube and the total linear abrasion amount of check bar; Infrared temperature sensor is installed in lower end at tubular test coupon, with the temperature of tubular test coupon in the online detection process of the test; At the force cell of the mounting and clamping system bottom installation and measuring contact pressure of tubular test coupon, with the contact pressure of two test specimen rubbing surfaces in the online detection process of the test; This testing machine is realized friction force between online detection two test specimens by the method that adopts torque sensor to measure moment of torsion in addition.

Characteristics of the present invention and advantage are: this testing machine can not satisfy at present abrasion tester studies the requirement of impacting the slip composite abrasion test between petroleum drilling drilling rod and the sleeve pipe under the circulatory mediator condition, a kind of sliding desk type casing tube abrasion testing machine of special use is provided, it can be well impacts the wearing and tearing of slip compound friction and carries out systematic study the petroleum drilling drilling rod and the sleeve pipe of different large scale materials under various medium circulation conditions, the impact that can realize controlled impact loading type under the heterogeneous circulation lubrication ambient condition the slide sleeve friction and the abrasion research of compound working condition.It not only can realize the circulation of flow is adjustable, composition is variable multiphase medium, and be that the complexity of impact energy adjustable size is impacted, parameters such as the while can online detection friction force, impulsive force, frequency of impact, wear extent, and by computer controlled automatic.In a word, actively this testing machine of application of advanced science and technology exploitation provides brand-new means for drilling well drilling bar casing wear and tribology research, will make huge contribution for drilling well drilling bar casing wear and Tribological Study.

Description of drawings

Fig. 1 is the general structure synoptic diagram of sliding desk type casing tube abrasion testing machine of the present invention;

Fig. 2 is the local enlarged diagram of the clamping part of sliding desk type casing tube abrasion testing machine of the present invention;

Fig. 3 is the synoptic diagram of the Detection ﹠ Controling system of sliding desk type casing tube abrasion testing machine of the present invention;

Fig. 4 is the synoptic diagram of the circulation system of sliding desk type casing tube abrasion testing machine of the present invention;

Fig. 5 is the drilling rod of Maurer company development and the synoptic diagram of casing tube abrasion testing machine.

The drawing reference numeral explanation:

1, kinematic train 2, excitation system 3, mounting and clamping system

4, Hydrauservo System 5, frame 101, drive speed-adjusting motor

102, shaft coupling 103, radial bearing 104, main pulley

105, belt 106, from belt pulley 107, bearing

108, torque sensor 109, bearing 110, transmission shaft

111, lifting axe 112, bearing 201, impact transmission shaft

202, from belt pulley 203, needle bearing (inside is eccentric wheel) 204, Bearing Installation seat

205, push rod 301, sleeve pipe clamper 302, tubular test coupon

303, test bar 304, sleeve pipe clamper base 305, force cell

306, sliding plate 307, guide rod shaft 308, worm-gear driven push rod regulator

309, linear bearing 310, mounting seat 401, hydraulic jack

402, portal 501, hydraulic servo platform 502, column

503, spring setting nut 504, compression spring 505, last sliding platform

506, linear bearing 507, slip dovetail mount 508, lower slider platform

509, column base 510, support

Embodiment

Following conjunction with figs. and specific embodiment are described in further detail the specific embodiment of the present invention.

As shown in Figures 1 to 4, the present invention proposes a kind of sliding desk type casing tube abrasion testing machine, it comprises kinematic train 1, excitation system 2, mounting and clamping system 3 and frame 5, geometrical clamp is held first test specimen on the rotating drive shaft 110 of kinematic train 1,3 pairs of mounting and clamping systems should be equiped with second test specimen in the first test specimen place, kinematic train 1 drives this first test specimen and rotates around the axle center, frame 5 is provided with at least one sliding platform, described kinematic train 1 is arranged on this sliding platform, excitation system 3 can drive described sliding platform up-down vibration, be that excitation system 2 can drive the whole up-down vibration of kinematic train, in rotation, impact second test specimen that is fixed on the mounting and clamping system 3 thereby drive this first test specimen.

In a specific embodiment of the present invention, this first test specimen is a test bar (drilling rod test specimen) 303, and this second test specimen is a tubular test coupon (sleeve pipe test specimen) 302.

Can be fixed with many root posts 502 on the support 510 of frame 5, each column 502 suitably highly be provided with the multilayer platform, and at least one is above-mentioned sliding platform in the described platform.As shown in Figure 1, present embodiment is provided with four root posts 502, and 1 is connected with four layers of platform on the column 502, is followed successively by hydraulic servo platform 501 from top to down, goes up sliding platform 505, lower slider platform 508 and support 510 platforms.Its central post 502 is fastened on the support 510 with threaded connection mode, and hydraulic servo platform 501 is fixed on the upper end of column 502 with threaded connection mode, and it is static that their form the relative ground of one in test.Different is, upper and lower sliding platform 505 and 508 is linked together, connect with four root posts 502 in the integral hanging mode by the spring setting nut 503 at two ends separately by each four groups of compression spring 504 up and down, so two sliding platforms 505,508 and the kinematic train 1 that is installed on the sliding platform can move up and down along the axis direction that is installed on the column 502 on the column base 509.

As shown in Figure 1, the assembly of the kinematic train 1 of described testing machine all is installed in up and down on the two-layer sliding platform 505 and 508, by the transmission order successively by drive speed-adjusting motor 101, shaft coupling 102, main pulley 104, belt 105, form from belt pulley 106, torque sensor 108 and rotating drive shaft 110, described rotating drive shaft 110 is made up of multistage, is realized connecting by shaft coupling 102, belt 105 and torque sensor 108 respectively.As shown in Figure 2, the transmission shaft 110 of described kinematic train 1 and lifting axe 111 connect threadably, can be clamped and installed in the test bar (first test specimen) 303 between them after the threaded together, and drive this test bar 303 rotations of realization by rotating drive shaft 110.

Clamping device and adjusting gear that mounting and clamping system 3 comprises mounting seat 310, is provided with on it, wherein: as shown in Figure 2, be equiped with linear bearing 309 in the mounting seat 310, the bottom is equipped with four smooth guide rods 307, this guide rod 307 can move up and down along the axis of the linear bearing 309 in the mounting seat 310, this clamping device comprises a branch sleeve pipe clamper 301 and a clamper base 304 in one, and this second test specimen (sleeve pipe test specimen 302) is clamped by middle minute sleeve pipe clamper 301; The adjusting gear that clamper base 304 and mounting seat are 310 is a worm-gear driven push rod regulator 308, it is by step motor drive, with the height of regulating sleeve pepe gripper 301, thereby realize the contact pressure of tubular test coupon 302, test bar 303 or the adjustment of lash space.Contact pressure when between regulator 308 and sleeve pipe clamper base 304, force cell 305 being installed with real-time experiment with measuring between two test specimens.For the reliability and the authenticity of the impulsive force that guarantees online detection, this force cell can adopt highly sensitive piezoelectric force transducer, and the mounting and clamping system 3 of this piezoelectric force transducer and tubular test coupon integrates.The base bottom of bearing 112 has dovetail groove, and the position, the left and right sides of this dovetail groove and slip dovetail mount 507 engages adjustable bearings 112 and lifting axe 111 is so that clamp test bar 303 by the external thread of this left end and the screw-internal thread fit of transmission shaft 110 right-hand members.

The regulating device that other known configurations also can be installed in the bottom of described mounting and clamping system 3 replaces aforesaid screw drive push rod regulator, suitably to adjust the gap of test bar and tubular test coupon by the requirement of test, satisfies the different tests condition.Because this regulating device can known configurations realize, repeats no more herein.

The excitation system 2 of testing machine comprises exciting buncher (not shown), impact transmission shaft 201, spring bearing (being located in the figure centre bearer mounting seat 204), needle bearing 203 (in be provided with eccentric wheel) and push rod 205, wherein, spring bearing is installed on the base 204, be used for supporting impact transmission shaft 201, the exciting buncher drives when impacting transmission shaft 201 rotations, the needle bearing 203 interior eccentric wheels that drive is installed on this impact transmission shaft 201 rotate, when eccentric wheel is in lift, the eccentric wheel that rotates promotes push rod 205 and moves upward, thereby drives sliding platform 505,508 is up; When eccentric wheel turns over peak, sliding platform 505,508 just falls after rise under gravity and compression spring 504 elastic force actings in conjunction, thereby realized two-layer sliding platform 505,508 and the up-down vibration of passing through the test bar 303 (drilling rod test specimen) of transmission shaft 110 indirect securement on platform, thereby realized the impact of 303 pairs of tubular test coupons 302 of test bar.

The hydraulic jack 401 of this Hydrauservo System is fixedly mounted on the hydraulic platform 501, the oil liquid pressure of various ways is provided by hydraulic workstation and control system, under the effect of this oil liquid pressure, piston mandril in the hydraulic jack transmits loading force to sliding platform 505 by the portal 402 that is installed in sliding platform 505 rotation bunchers 101 tops, on 508, this loading force is by sliding platform 505,508 are applied between first and second test specimens, the sliding platform compression spring 504 of scalable pre compressed magnitude combines on this Hydrauservo System and the testing machine column 502, multiple test contact pressure type and slide unit return parameter can be provided, thereby realize static load, the experimental enviroment simulation that pulsed load and hydraulic shock load load is to satisfy different testing requirementss.In view of Hydrauservo System has adopted known structure, no longer describe in detail herein.

In a specific embodiment of the present invention, this sliding desk type casing tube abrasion testing machine also comprises a circulation system, as shown in Figure 4, this circulation system can be by steam piano, the valve group, flowmeter, stirrer, abrasive dust collector, compositions such as filtrator, this circulation system constitutes the adjustable multiphase medium lubricating system of flow, the lubricating condition of various flows moving medium is provided to abrasion tester, the outside of the sleeve pipe clamper 301 of mounting and clamping system 3 and bottom have mud and import and export, be used to make used multiphase medium can be recycled, flowmeter is used for online detection flow, stirrer also is installed, to keep solid phase dispersed system performance in the suction pit.Because employed each parts of this circulation system are known configurations, therefore, no longer its concrete structure are described in detail herein.

As shown in Figure 3, sliding desk type casing tube abrasion testing machine of the present invention comprises that also a whole set of detects control system, and should detect control system and form by detecting and control two parts.Wherein:

The test section comprises a multichannel data acquisition system and a plurality of sensor, be used to realize online detection to test figures such as rotating speed, moment of torsion, frequency of impact, impulsive force, friction force and wear extenies, relevant pick-up unit can comprise a torque sensor 108, linear abrasion sensor, test bar linear abrasion sensor, force cell 305, flowmeter, infrared temperature sensor etc., wherein: torque sensor 108 is installed on the transmission shaft, is used to detect the rotating speed and the moment of torsion of transmission shaft; The actual displacement transducer that can be of linear abrasion sensor, it is installed on the support platform 510, the linear abrasion amount that adds up of coming indirect detection tubular test coupon and test bar by the relative shift that detects sliding platform 508 and support platform 510; Another dynamic displacement sensor is installed on the top of sleeve pipe clamp device 301, is used to detect the linear abrasion amount of test bar 303; As shown in Figure 2, force cell 305 is installed in the bottom of mounting and clamping system, with online detection actual contact pressure; Flowmeter detects the flow of the multiphase medium lubricating system in the circulation system.

Control section is used for the operational factor of testing machine is controlled in real time, it comprises PLC, first frequency converter, second frequency converter, driver and proportion magnetic valve, after wherein PLC obtains the data of each sensor, adjust the drive speed-adjusting rotating speed of motor by first frequency converter, adjust the rotating speed of exciting buncher by second frequency converter, control the servomotor of mounting and clamping system by driver, to regulate its clamped height of first test specimen, reach the hydraulic jack of controlling Hydrauservo System by this proportion magnetic valve.

The above-mentioned test figure that multichannel data acquisition system will collect converts digital signal to and is sent to control section (can be computing machine), realize real-time control by this control section by circuit, the operational factors such as rotating speed, frequency of impact, impulsive force, surge waveform and rate-of flow of testing machine are carried out suitable adjustment according to detected test figure and actual needs to buncher, Hydrauservo System, pump, solenoid valve, stirrer and abrasive dust collector.

This testing machine can be used for studying sleeve pipe (being equivalent to tubular test coupon) the phase impact skimming wear situation under different materials, the different medium lubricating condition, and its concrete using method is as follows: at first tubular test coupon (sleeve pipe test specimen) and test bar (drilling rod test specimen) are installed on the testing machine; The deployed medium that will use is put into suction pit; Check and each detecting sensor of initialization; Testing machine is added static load; Start the circulation system, be adjusted to suitable flow; The rotation of motoring ring test axle is set and the startup varying-speed motor; Be provided with and start and impact varying-speed motor, begin test; The protracted test process, the every detection data of online collection in this process, also can further be controlled operational factor by control section according to detecting data in real time; Close the impact varying-speed motor; Close the drive speed-adjusting motor; Close closed loop system; The dismounting test specimen; Measure the actual linear wear extent of two test specimens.

In a specific embodiment of the present invention, used drilling rod test specimen diameter is 168mm, axial width 80mm, sleeve pipe test specimen diameter 244.5mm, axial width 100mm, wall thickness 9-14mm.The static load maximal value 5000N that can add on the test specimen, peak-peak impulsive force 5000N, 60~300 rev/mins of speed of mainshaft adjustable extents, circulating mud discharge capacity 1.0 sides/hour more than.

Following table (table 1) is the comparison of the parameters of the present invention and known various types of abrasion testers:

The all types of testing machines of table 1 are relatively tabulated

The testing machine type The impulsive force size The vibration shape Sample dimensions Medium Detection system Pin dish testing machine Little Simply Small size Submergence is static Better Reciprocal impact testing machine Little Simply Small size Do not have Generally The pulsatile impact testing machine Bigger Simply Large-size Do not have Generally The Maurer testing machine Do not have Do not have Full-scale Heterogeneous circulation Good Testing machine of the present invention Greatly Complicated Full-scale Heterogeneous circulation Good

Though the present invention has utilized aforementioned specific embodiment to disclose in detail; right its is not in order to limiting the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; when can doing various changes and modification, so protection scope of the present invention is as the criterion when looking claims person of defining.

Claims (10)

1. sliding desk type casing tube abrasion testing machine, it comprises kinematic train, excitation system, mounting and clamping system and frame, geometrical clamp is held first test specimen on the rotating drive shaft of described kinematic train, described mounting and clamping system is to being equiped with second test specimen in the first test specimen place, this first test specimen of described transmission system drives rotates around the axle center, it is characterized in that, described frame is provided with at least one sliding platform, described kinematic train is arranged on this sliding platform, described excitation system can drive described sliding platform up-down vibration, impacts second test specimen that is fixed on the mounting and clamping system thereby drive this first test specimen in rotation.
2. sliding desk type casing tube abrasion testing machine as claimed in claim 1 is characterized in that: described first test specimen is a test bar, and described second test specimen is a tubular test coupon; Be fixed with many root posts on the support of described frame, described column is provided with the multilayer platform, and at least one is above-mentioned sliding platform in the described platform.
3. sliding desk type casing tube abrasion testing machine as claimed in claim 2, it is characterized in that: be fixed with four root posts on this support, and column is provided with two-layer at least sliding platform, wherein upper and lower sliding platform is linked together, be supported on four root posts by each four groups of compression spring integral hanging up and down, excitation system drives this two-layer sliding platform up-down vibration.
4. sliding desk type casing tube abrasion testing machine as claimed in claim 3, it is characterized in that: the kinematic train of described testing machine comprises the drive speed-adjusting motor successively by the transmission order, main pulley, belt, from belt pulley and rotating drive shaft, wherein, this drive speed-adjusting motor, main pulley is installed on the sliding platform, describedly be installed on the lower slider platform from belt pulley and rotating drive shaft, described rotating drive shaft is made up of multistage, respectively by shaft coupling, belt, torque sensor is realized connecting, first test specimen is installed on this rotating drive shaft, drives and realize this test specimen rotation by rotating drive shaft.
5. sliding desk type casing tube abrasion testing machine as claimed in claim 3, it is characterized in that: described mounting and clamping system comprises mounting seat and goes up clamping device and the adjusting gear that is provided with, wherein: be equiped with linear bearing in the mounting seat, the bottom is equipped with four smooth guide rods, this guide rod can move up and down along the axis of the linear bearing in the base, this clamping device comprises a branch sleeve pipe clamper and a clamper base in one, adjusting gear between clamper base and mounting seat is a worm-gear driven push rod regulator, it is by step motor drive, with the height of regulating sleeve pepe gripper, thereby realization is to the adjustment of two test specimen contact pressures or lash space.
6. sliding desk type casing tube abrasion testing machine as claimed in claim 3, it is characterized in that: the excitation system of described testing machine comprises the exciting buncher, impact transmission shaft, spring bearing, in be provided with eccentric needle bearing and push rod, wherein, spring bearing is installed on the base platform, be used for supporting the impact transmission shaft, the exciting buncher drives when impacting the transmission shaft rotation, the interior eccentric wheel of needle bearing that drive is installed on this impact transmission shaft rotates, when eccentric wheel is in lift, the eccentric wheel that rotates promotes push rod and moves upward, thereby it is up to drive sliding platform; When eccentric wheel turns over peak, sliding platform falls after rise under gravity and the acting in conjunction of compression spring elastic force, thereby has realized the up-down vibration of two-layer sliding platform and indirect securement first test specimen on platform.
7. sliding desk type casing tube abrasion testing machine as claimed in claim 3, it is characterized in that: described testing machine also comprises a Hydrauservo System, the top of described framework pillar also is provided with a hydraulic platform, the hydraulic jack of this Hydrauservo System is fixedly mounted on the hydraulic platform, the oil liquid pressure of various ways is provided by hydraulic workstation and control system, under the effect of this oil liquid pressure, piston mandril in the hydraulic jack transmits loading force to sliding platform by the portal that is installed in sliding platform rotation buncher top, this loading force is applied between first and second test specimens by sliding platform, the compression spring of the scalable pre compressed magnitude on this Hydrauservo System and the testing machine column combines, multiple test contact pressure type and slide unit return parameter can be provided, thereby realize static load, the experimental enviroment simulation that pulsed load and hydraulic shock load load.
8. sliding desk type casing tube abrasion testing machine as claimed in claim 1, it is characterized in that: described sliding desk type casing tube abrasion testing machine also comprises a circulation system, this circulation system is made up of pump, valve group, flowmeter, stirrer, this circulation system constitutes the adjustable multiphase medium lubricating system of flow, the lubricating condition of various flows moving medium is provided to abrasion tester, flowmeter is used for online detection flow, and stirrer is installed in the suction pit, keeps solid phase dispersed system performance.
9. sliding desk type casing tube abrasion testing machine as claimed in claim 4 is characterized in that:
Described mounting and clamping system comprises mounting seat and goes up clamping device and the adjusting gear that is provided with, wherein: be equiped with linear bearing in the mounting seat, the bottom is equipped with four smooth guide rods, this guide rod can move up and down along the axis of the linear bearing in the base, this clamping device comprises a branch sleeve pipe clamper and a clamper base in one, adjusting gear between clamper base and mounting seat is a worm-gear driven push rod regulator, it is by step motor drive, with the height of regulating sleeve pepe gripper, thereby realization is to the adjustment of two test specimen contact pressures or lash space;
The excitation system of described testing machine comprises the exciting buncher, impacts transmission shaft, spring bearing, in be provided with eccentric needle bearing and push rod, wherein, spring bearing is installed on the base platform, be used for supporting the impact transmission shaft, the exciting buncher drives when impacting the transmission shaft rotation, and the eccentric wheel that drives in the needle bearing that is installed on this impact transmission shaft rotates, when eccentric wheel is in lift, the eccentric wheel that rotates promotes push rod and moves upward, thereby it is up to drive sliding platform; When eccentric wheel turns over peak, sliding platform falls after rise under gravity and the acting in conjunction of compression spring elastic force, thereby has realized the up-down vibration of two-layer sliding platform and indirect securement first test specimen on platform;
Described testing machine also comprises Hydrauservo System, the circulation system and detection control system, wherein said Hydrauservo System comprises: the top of described framework pillar is provided with a hydraulic platform, the hydraulic jack of this Hydrauservo System is fixedly mounted on the hydraulic platform, the oil liquid pressure of various ways is provided by hydraulic workstation and control system, under the effect of this oil liquid pressure, piston mandril in the hydraulic jack transmits loading force to sliding platform by the portal that is installed in sliding platform rotation buncher top, this loading force is applied between first and second test specimens by sliding platform, the compression spring of the scalable pre compressed magnitude on this Hydrauservo System and the testing machine column combines, multiple test contact pressure type and slide unit return parameter can be provided, thereby realize static load, the experimental enviroment simulation that pulsed load and hydraulic shock load load;
This circulation system is made up of pump, valve group, flowmeter, stirrer, this circulation system constitutes the adjustable multiphase medium lubricating system of flow, the lubricating condition of various flows moving medium is provided to abrasion tester, flowmeter is used for online detection flow, stirrer is installed in the suction pit, keeps solid phase dispersed system performance;
This detects control system and forms by detecting and control two parts:
The test section comprises many group sensors and data collector, be used to realize online detection to test figure, and the combination in any that comprises torque sensor, vibration displacement sensor, infrared temperature sensor, force cell, acceleration transducer, displacement transducer, speed probe, flow sensor, position transducer, pattern sensor, data collector obtain the data of sensor as aforementioned and convert digital signal to be sent to control section;
Control section is used for the operational factor of testing machine is controlled in real time, it comprises PLC, first frequency converter, second frequency converter, driver and proportion magnetic valve, after wherein PLC obtains the data of each sensor, adjust the drive speed-adjusting rotating speed of motor by first frequency converter, adjust the rotating speed of exciting buncher by second frequency converter, control the servomotor of mounting and clamping system by driver, to regulate its clamped height of first test specimen, reach the hydraulic jack of controlling Hydrauservo System by this proportion magnetic valve.
10. sliding desk type casing tube abrasion testing machine as claimed in claim 9 is characterized in that: on the upper end mounting and clamping system of described tubular test coupon displacement transducer is installed, with online detection developmental tube and the total linear abrasion amount of check bar; Infrared temperature sensor is installed in lower end at tubular test coupon, with the temperature of tubular test coupon in the online detection process of the test; At the force cell of the mounting and clamping system bottom installation and measuring contact pressure of tubular test coupon, with the contact pressure of two test specimen rubbing surfaces in the online detection process of the test; This testing machine is realized friction force between online detection two test specimens by the method that adopts torque sensor to measure moment of torsion in addition.
CN2006101134193A 2006-09-27 2006-09-27 Sliding desk type casing tube abrasion testing machine CN101153835B (en)

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