CN106442101A - Compression torsion buckling simulation experiment device and method for tubular columns in shaft - Google Patents
Compression torsion buckling simulation experiment device and method for tubular columns in shaft Download PDFInfo
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- CN106442101A CN106442101A CN201610888064.9A CN201610888064A CN106442101A CN 106442101 A CN106442101 A CN 106442101A CN 201610888064 A CN201610888064 A CN 201610888064A CN 106442101 A CN106442101 A CN 106442101A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0026—Combination of several types of applied forces
Abstract
The invention relates to a compression torsion buckling simulation experiment device and method for tubular columns in a shaft.. The compression torsion buckling simulation experiment device comprises an axial compressive force loading device, a torque loading device, an outer pipe, a static-state tubular column test piece, a fixing joint and a loaded device, wherein the axial compressive force loading device is connected with the torque loading device, the torque loading device is connected onto a second base in a sliding manner, the two ends of the static-state column test piece are connected between the torque loading device and the loaded device, the axial compressive force loading device is provided with a pressure sensor and a stay wire sensor, the torque loading device is provided with a dynamic torque sensor and an angular displacement sensor, a front baffle of the loaded device is installed on a small bearing pedestal through a small bearing, both the small bearing pedestal and a rear baffle are connected with a guiderail in a sliding manner, a static-state torque sensor is connected with the front baffle, the rear baffle is connected with the pressure sensor, and a large bearing is arranged between the front baffle and the rear baffle. Through adoption of the compression torsion buckling simulation experiment device and method, the axial compressive force and the torque are applied and measured simultaneously, and the axial compressive force and the torque of the two ends of the tubular columns are independently measured.
Description
Technical field
The present invention relates to realizing in Oil/gas Well drilling and production technology field that shaft column is bent under axial compressive force and moment of torsion effect
The experimental provision of the simulation and measurement of Qu Hangwei, and in particular to shaft column pressure torsional buckling song analogue experiment installation and its experiment side
Method.
Background technology
Shaft column includes drill string, casing string, test string, sucker rod tubing string, continuous pipe etc., is subjected to axial compressive force
With moment of torsion act on, be easily caused flexing, its flexing mechanical behavior is the key issue in petroleum works, to petroleum works in all
Many-sided (such as drilling well, completion, well logging, pressure break, oil recovery etc.) has harmful effect, and drill bit direction can be caused to change and down-hole frictional resistance
(or even making tubing string " locked ") is dramatically increased with moment of torsion, cause drilling tool fatigue rupture, tubing seal failure, tubing string Joint failure,
Coiled tubing cannot enter down and oil recovery rod tube post eccentric wear etc..Therefore, the Buckling modes of research shaft column have important meaning
Justice.
Post-buckling experimental provision of Northeast Petroleum University Zhai after east design, tubing string is stainless steel, using universal testing machine
Axial compressive force is provided, and records tubing string axial displacement, tubing string bending under axial compressive force effect can be fixed in two ends in simulation wellbore hole
Qu Hangwei.Guan Feng, Duan Menglan et al. design coiled tubing down-hole mechanical behavior simulated experiment stand, the high-strength spring steel wire of tubing string
Simulation, provides thrust and pull-back forces using electric cylinder in head end, obtains first and last end axial compressive force under different displacements by sensor, can
Realize that Buckling modes simulation of the tubing string respectively under thrust and pull-back forces effect is fixed in one end in horizontal well.Chinese invention patent
201210101723.1 devising bimetallic tube complete buckling analogue experiment installation, bimetallic tube is realized axially and laterally loading, by
The Buckling of the axial compressive force of detection, shaft end displacement and each strain reflection bimetallic tube.The device can be simulated two ends and be fixed bilayer
Complete buckling behavior of the pipe under axially and laterally loading effect.Chinese utility model patent 201420542160.4 devises one
Multi-functional loading pipeline complete buckling experimental system is planted, temperature, pressure, mechanical load pipeline complete buckling situation can be simulated respectively.Should
Experimental rig can achieve pipeline in temperature, and the entirety of axial compressive force and mechanical aspects axially and under lateral axial compressive force effect is bent
Bent.The shaft column small size simulated experiment platform of Wang Yu, Gao Guohua et al. design, simulates well, bullet using lucite tube
Spring, is realized, to simulating the axially loaded of tubing string, dividing by ball-screw using stepper motor or manual type as simulation tubing string
Not Ce Liang loading end and fixing end there is load and the displacement of Sine Buckling and Helical Buckling.The above experimental provision of design
Realize that shaft column axial compressive load is loaded, measure the Buckling modes of tubing string, but shaft column is not carried out by moment of torsion
The flexing experimental simulation of effect.
Zhang Guangqing designs deviated wells section rotary drill column stability test research device, and upper end is furnished with buncher and realizes drill string
Rotary motion, measures the moment of torsion for applying with torque sensor；It is furnished with hand power screw mechanism, displacement transducer and pressure sensing in lower end
Device, realizes that axial compressive force applies, and measures axial compressive force and the displacement of pressurized drill string.The experimental provision can study rotary drill column
Stability, but axial compressive force is manual loading, applies inconvenient.As post-buckling is affected by pit shaft frictional force, up and down
The load at two ends has differences, and the device upper end can not realize that axial compressive force is measured, and torque measurement can not be realized in lower end.
Content of the invention
It is an object of the present invention to provide shaft column pressure torsional buckling song analogue experiment installation, this shaft column pressure
Torsional buckling song analogue experiment installation is used for solving to apply while existing experimental provision can not realize axial compressive force and moment of torsion and surveying
Amount, and can not realize that the problem that tubing string two ends axial compressive force and moment of torsion are each independently measured, another object of the present invention are
The experimental technique of this shaft column pressure torsional buckling song analogue experiment installation is provided.
The technical solution adopted for the present invention to solve the technical problems is：This shaft column pressure torsional buckling song simulated experiment
Device includes axial compressive force charger, torque loading device, clamping device, outer tube, static tubing string test specimen, anchor tip, receives
Carry and put, axial compressive force charger is fixed in first base, axial compressive force charger connects torque loading device, moment of torsion
Charger is slidably connected in second base, and static tubing string test specimen is arranged in outer tube, and outer tube is by least one clamping device
Clamping, static tubing string test specimen two ends are connected between torque loading device and stand under load device by anchor tip respectively；Axially press
Force loading device is provided with first pressure sensor and stay wire sensor, and torque loading device includes dynamic torque sensor and angle
Displacement transducer, first pressure sensor connect the decelerator of torque loading device, and stay wire sensor bracing wire is connected to decelerator
Base on；Stand under load device includes the 3rd base, static torque sensor, second pressure sensor, front apron, backboard, the
Guide rail is set on three bases, and, by little bearing on small bearing bracket, small bearing bracket is by guide rail slide block and guide rail for front apron
It is slidably connected, backboard is connected with slide by guide rail slide block, front apron is connected with corresponding anchor tip by connecting rod
Connect, static torque sensor one end is bonded with front apron, the static torque sensor other end is fixed on backboard, backboard
Opposite side connects second pressure sensor, and second pressure sensor is fixedly connected with the 3rd base, between front apron and backboard
It is provided with big bearing.
A kind of shaft column pressure torsional buckling song analogue experiment installation include axial compressive force charger, torque loading device,
Clamping device, outer tube, rotation tubing string test specimen, anchor tip, stand under load device, axial compressive force charger are fixed on first base
On, axial compressive force charger connects torque loading device, and torque loading device is slidably connected in second base, rotates tubing string
Test specimen is arranged in outer tube, and outer tube is rotated tubing string test specimen two ends and passed through anchor tip respectively by least one gripping apparatus grips
It is connected between torque loading device and stand under load device；Axial compressive force charger is provided with first pressure sensor and bracing wire is passed
Sensor, torque loading device include dynamic torque sensor and angular displacement sensor, the connection moment of torsion loading of first pressure sensor
The decelerator of device, stay wire sensor bracing wire are connected on the base of decelerator；Stand under load device includes the 4th base, dynamic torque
Tactility apparatus, the 3rd pressure sensor, little bearing, arrange guide rail on the 4th base, dynamic torque tactility apparatus is arranged on tactility apparatus bottom
On seat, tactility apparatus base is connected with slide by guide rail slide block, dynamic torque tactility apparatus input by shaft coupling and its
Corresponding anchor tip is bonded, and little bearing is arranged between the riser of dynamic torque tactility apparatus output end and tactility apparatus base,
3rd pressure sensor is connected to the opposite side of tactility apparatus base vertical plate by variable buckle, and the 3rd pressure sensor and the 4th base connect
Connect.
Such scheme Axial Force charger includes push-rod electric machine, first pressure sensor, stay wire sensor, push rod
Motor one end is fixed on the column of first base, and push-rod electric machine fuselage is fixed by frame-type geometrical clamp, and push-rod electric machine is exported
End connects first pressure sensor by connector, and the other end of first pressure sensor is by the described deceleration of variable buckle connection
Device；Stay wire sensor is fixed in first base, and first base rear end has bar shaped through groove in the width direction.
In such scheme, torque loading device includes servomotor, decelerator, dynamic torque sensor, angle displacement transducer Device, servomotor connection reducer, on decelerator base, decelerator base is by guide rail slide block and the second bottom for decelerator The slide connection arranged on seat, on dynamic torque sensor base, dynamic torque is sensed dynamic torque sensor Device base is slidably connected with second base also by guide rail slide block, and decelerator connects shaft coupling; Angular displacement sensor passes through support It is fixed on dynamic torque sensor base, angular displacement sensor is flexibly connected with support, angular displacement sensor measurement end is overlapped On the outer wall of shaft coupling; Shaft coupling is connected with the anchor tip of its relative set, and the second base front end has connecting plate, second Base is bolted and is connected by the saturating groove of bar shaped and connecting plate with the first base.
In such scheme, clamping device comprises Holding seat, cramping body, handle, handle is connected structure by handwheel with screw flight become, cramping body has bottom fixed part and opening and closing part, top, opening and closing part, top and bottom fixed part pass through bearing pin activity in a side connect, opening and closing part, top forms circular cavity while being fastened on the fixed part of bottom, opening and closing part, top and bottom fixed part are at another side all has a pair of contiguous block, the a pair of contiguous block of bottom fixed part has pin-and-hole, the screw rod of handle bottom also has pin-and-hole, handle in the middle of two pairs of contiguous blocks, pass through, fixed axis is successively through each pin-and-hole, handle top is pressed in a pair of connection of opening and closing part, top on piece, two pairs of contiguous blocks are fixed together.
In such scheme, anchor tip comprises by self-clinching fastener and converter and connecting and composing, and is also provided with adjustment screw on converter, can realize being respectively fixedly connected with hinged of described tubing string test specimen and is connected by install, unload adjustment screw on converter.
In such scheme, backboard one side has multiple horizontal columns, and the end of each horizontal columns is all fixed on a connecting ring, and backboard opposite side arranges variable buckle.
Each pressure sensor, stay wire sensor, dynamic torque sensor, angular displacement sensor, the equal connection data acquisition system of static torque sensor in such scheme, data collecting system is connected with computer.
In such scheme, in cramping body, be provided with two cushion blocks, cushion block is half cylindrical shell, and two cushion blocks lay respectively at opening and closing part, top and bottom fixed part, to realize the fixing of different-diameter outer tube.
Above-mentioned shaft column is pressed the experimental technique of the bent simulation of torsional buckling, and it comprises step:
A, arrange clamping device, outer tube, static tubing string test specimen, anchor tip, torque loading device, stand under load device, axially successively Pressure loading device; Clamping device determines that by outer tube shape laying number and position distribution is fixed on level ground; Outer tube Be fixed on described clamping device; Static tubing string test specimen is placed in described outer tube; Anchor tip is fixedly connected on described tubing string examination Part two ends; Torque loading device fixed and arranged is at described static tubing string test specimen one end, described torque loading device output shaft coupling Device is fixedly connected with described anchor tip converter; Stand under load device fixed and arranged is at the described static tubing string test specimen other end, described in Stand under load device contiguous block is fixedly connected with described another group anchor tip converter; Axial compressive force charger fixed and arranged is in institute State the torque loading device other end, described axial compressive force charger pressure sensor is by variable buckle and described torque loading device Decelerator is fixedly connected with;
B, unclamp the self-clinching fastener of input anchor tip and being fixedly connected with of static tubing string test specimen, drive push-rod electric machine impeller-hub Advance to pressure loading device and torque loading device, measure pre-propulsive force by axial compressive force charger pressure sensor;
C, be fastenedly connected self-clinching fastener and static tubing string test specimen, drive push-rod electric machine to apply axial compressive force to static tubing string test specimen straight Successively there is Sine Buckling, Helical Buckling to tubing string test specimen, observe and take tubing string Specimen Shape and change, stop loading; By axle Measure in real time static tubing string test specimen two ends axial compressive force to pressure loading device pressure sensor and stand under load device pressure sensor;
D, the static tubing string test specimen of placement same model are in outer tube, and tubing string test specimen is applied to moment of torsion with startup servomotor until static pipe Successively there is Sine Buckling, Helical Buckling in post test specimen, observes and take tubing string Specimen Shape and change, and stops loading; By dynamically turning round Square sensor and static torque sensor are measured the moment of torsion that bear at static tubing string test specimen two ends in real time;
E, the static tubing string test specimen of placement same model, in outer tube, drive push-rod electric machine to apply axial compressive force to static tubing string test specimen, Meanwhile, start servomotor and static tubing string test specimen is applied to moment of torsion, static tubing string test specimen under the effect of axial compressive force and moment of torsion Successively there is Sine Buckling, Helical Buckling, observe and take static tubing string Specimen Shape and change, stop loading; By pressure sensing Device is measured static tubing string test specimen two ends axial compressive force in real time, measures in real time quiet by dynamic torque sensor and static torque sensor The moment of torsion that bear at state tubing string test specimen two ends;
F, adopt the static tubing string test specimen of other models, repeat experimental procedure B-E.
The present invention has following beneficial effect:
1, in actual production, shaft column is generally subject to axial compressive force and torsional interaction simultaneously, and existing experimental study lacks corresponding research to this, and the present invention has filled up Related Experimental Study blank.
2,, when the present invention works, in the time that axle force loading device applies axle power, the axle power of being transmitted by tubing string test specimen is through static Thereby torque sensor front apron, large bearing, static torque sensor backboard are applied to pressure sensor, realize the survey of axle power Amount; In the time that torque loading device applies moment of torsion, the moment of torsion being transmitted by tubing string test specimen transmits through static torque sensor front apron To static torque sensor, little bearing assists static torque sensor front apron to realize the rotation of self, and large bearing is realized static A transmitter shaft power between the forward and backward baffle plate of torque sensor, not transmitting torque, thus realize the measurement of moment of torsion. pressure is turned round to combination Complex load resolves into axial compressive force and moment of torsion, utilizes respectively pressure sensor and torque sensor, measures individually or simultaneously axle To pressure and moment of torsion, and do not interfere with each other, realize shaft column flexing behavior under axial compressive force and torsional interaction simulation and Measure.
3, the supporting cushion block of clamping device in the present invention, can fix different-diameter pit shaft; Self-clinching fastener can be fixed different straight Footpath tubing string test specimen. interchangeability is good, can realize the flexing simulated experiment of different mineshaft diameters and different tubing string test specimens.
4, the present invention, by arranging clamping device, can realize the flexing simulated experiment of the tubing string test specimens such as straight section, iso-curvature curved segment, variable curvature curved segment.
5, the present invention also can be used for rotating the flexing simulated experiment that is subject to axial compressive force of tubing string.
Brief description of the drawings
Fig. 1 is the overall schematic perspective view of one embodiment of the present invention;
Fig. 2 is clamping device schematic perspective view of the present invention;
Fig. 3 is the partial schematic diagram of Fig. 2;
Fig. 4 is anchor tip schematic perspective view of the present invention;
Fig. 5 is torque loading device schematic perspective view of the present invention;
Fig. 6 is inventive example axial compressive force charger schematic perspective view;
Fig. 7 is stand under load device schematic perspective view of the present invention;
Fig. 8 is the partial schematic diagram of Fig. 7;
Fig. 9 is the packing ring schematic diagram of anchor tip of the present invention;
Figure 10 is that iso-curvature outer tube of the present invention is arranged schematic diagram;
Figure 11 is that variable curvature outer tube of the present invention is arranged schematic diagram;
Figure 12 is that in the present invention, anchor tip is fixedly connected with mode schematic diagram;
Figure 13 is the hinged connected mode schematic diagram of anchor tip in the present invention;
Figure 14 is stand under load device schematic diagram in the second embodiment of the present invention.
In figure: 1 axial compressive force charger; 2 torque loading devices; 3 clamping devices; 4 outer tubes; 5 shaft couplings; 6 are carried Put; 7 anchor tips; 9 guide rails; 10 variable buckles; 11 push-rod electric machines; 12 first pressure sensors; 13 stay wire sensors; 14 first bottoms Seat; 15 frame-type geometrical clamps; 16 connectors; 17 bar shaped through grooves; 21 servomotors; 22 decelerators; 23 dynamic torque sensors; 24 Angular displacement sensor; 25 decelerator bases; 26 dynamic torque sensor bases; 27 second bases; 31 Holding seats; 32 bottoms are solid Determine portion; 33 tops opening and closing part; 34 handles; 35 fixing axles; 36 cushion blocks; 61 the 3rd bases; 62 static torque sensors; 63 second pressures Force snesor; 64 front aprons; 65 small bearing brackets; 66 big bearings; 67 backboards; 68 horizontal columns; 69 connection rings; 71 self-clinching fasteners; 72 converters; 73 adjusting screws; 74 bearing pins; 75 connecting rods; 81 the 4th bases; 82 dynamic torque tactility apparatus; 83 tactility apparatus bases; 84 little bearings; 85 the 3rd pressure sensors; 86 risers.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings：
Embodiment 1：
As shown in figure 1, this shaft column pressure torsional buckling song analogue experiment installation includes that axial compressive force charger 1, moment of torsion adds
Carry and put 2, clamping device 3, outer tube 4, static tubing string test specimen, anchor tip 7, stand under load device 6, axial compressive force charger 1 is solid
In the first base 14, axial compressive force charger 1 connects torque loading device 2, and torque loading device 2 is slidably connected to the
On two bases 27, static tubing string test specimen is arranged in outer tube 4, and outer tube 4 is clamped by least one clamping device 3, static tubing string examination
Part two ends are connected between torque loading device 2 and stand under load device 6 by anchor tip 7 respectively；Axial compressive force charger 1 sets
First pressure sensor 12 and stay wire sensor 13 is equipped with, torque loading device 2 includes dynamic torque sensor 23 and angular displacement
Sensor 24, first pressure sensor 12 connect the decelerator 22 of torque loading device 2, and 13 bracing wire of stay wire sensor is connected to and subtracts
On fast device base 25.
In conjunction with shown in Fig. 7, Fig. 8, stand under load device 6 includes the 3rd base 61, static torque sensor 62, second pressure sensing
Device 63, front apron 64, backboard 67, the 3rd base 61 are fixed on level ground, arrange guide rail 9, front on the 3rd base 61
By little bearing on small bearing bracket 65, small bearing bracket 65 is slidably connected with guide rail 9 plate 64 by guide rail slide block, backboard
67 are slidably connected with guide rail 9 by guide rail slide block, and front apron 64 is connected with corresponding anchor tip 7 by connecting rod, static torsion
62 one end of square sensor is bonded with front apron 64, and 62 other end of static torque sensor is fixed on backboard 67, backboard
67 opposite sides connection second pressure sensor 63, second pressure sensor 63 is fixedly connected with the 3rd base 61, front apron 64 and
Big bearing 66 is provided between backboard 67, big bearing 66 is fixedly connected with backboard 67 and front apron 64 respectively, realize both
Rotated does not interfere with each other.Small bearing bracket 65, backboard 67 can be slided on the rail 9.67 side of backboard has multiple levels
Post 68, the end of each horizontal columns 68 are fixed in a connection ring 69, and 67 opposite side of backboard arranges variable buckle 10.Work as axial compressive force
When charger 1 applies axial compressive force, axial compressive force passes through tubing string test specimen, anchor tip 7, connecting rod, front apron 64, big bearing
66th, backboard 67, so as to act on pressure sensor, realize the measurement of stand under load end axial compressive force；When torque application device 2 applies
During moment of torsion, moment of torsion passes through tubing string test specimen, anchor tip 7, connecting rod, front apron 64, so as to act on static torque sensor 62
On, realize the measurement of stand under load end moment of torsion.
As shown in fig. 6, axial compressive force charger 1 includes push-rod electric machine 11, first pressure sensor 12, stay wire sensor
13,11 one end of push-rod electric machine is fixed on the column of first base 14, and first base 14 is fixed on level ground.Push-rod electric machine
11 fuselages are fixed by frame-type geometrical clamp 15, and 11 fuselage of push-rod electric machine is realized fixing by frame-type geometrical clamp 15, screw, nut
With release；11 output end of push-rod electric machine connects first pressure sensor 12 by connector 16, first pressure sensor 12 another
One end connects described decelerator 22 by variable buckle 10；Stay wire sensor 13 is fixed in first base 14, after first base 14
End has bar shaped through groove 17 in the width direction.When axial compressive force charger 1 applies axial compressive force, axial compressive force passes through push rod
Motor 11 acts on first pressure sensor 12, realizes the measurement of axial compressive force；Stay wire sensor bracing wire is connected to the deceleration
On device base 25, slip of the bracing wire with decelerator 22 on the rail 9 constantly increases, and realizes the survey of axial compressive force operating distance
Amount.
As shown in figure 5, torque loading device 2 includes servomotor 21, decelerator 22, dynamic torque sensor 23, angle position
Displacement sensor 24,21 connection reducer 22 of servomotor, on decelerator base 25, decelerator base 25 leads to decelerator 22
The guide rail 9 that guide rail slide block is crossed with setting in second base 27 is slidably connected, and second base 27 is fixed on level ground, and dynamic is turned round
On the dynamic torque sensor base 26, dynamic torque sensor base 26 is also by guide rail slide block and for square sensor 23
Two bases 27 are slidably connected, and dynamic torque sensor 23 can be slided on the rail 9, and decelerator 22 connects shaft coupling 5, dynamic torque
Sensor 23 is bonded with shaft coupling 5；Angular displacement sensor 24 is fixed on dynamic torque sensor base 26 by support, angle
Displacement transducer 24 is flexibly connected with support, and angular displacement sensor 24 is rotatable by support, 24 measurement end of angular displacement sensor
It is overlapped on the outer wall of shaft coupling 5；Shaft coupling 5 is connected with the anchor tip 7 of its relative set, and 27 front end of second base has company
Fishplate bar, second base 27 are bolted by bar shaped through groove 17 and connecting plate with first base 14 and are connected.When moment of torsion loading dress
When putting 2 applying moment of torsion, moment of torsion passes through servomotor 21, decelerator 22, shaft coupling 5, so as to act on dynamic torque sensor 23,
Realize the measurement of input moment of torsion；Angular displacement sensor 24 is overlapped on 23 output end shaft coupling 5 of dynamic torque sensor, realizes pipe
The measurement of the post test specimen anglec of rotation.
In conjunction with shown in Fig. 2, Fig. 3, clamping device 3 includes Holding seat 31, cramping body, handle 34, handle 34 by handwheel and
Screw flight is connected and composed, and the center of handwheel has screw, screw rod to be threadedly coupled by screw with handwheel.Cramping body has bottom solid
Determine portion 32 and top opening and closing part 33, Holding seat 31 is fixed on level ground, 31 two ends of Holding seat are welded with otic placode, clamp
Connecting rod, spiral shell can be passed through between base 31, between Holding seat 31 and the torque loading device 2 or the stand under load device 6
Nail and nut connect.Top opening and closing part 33 is flexibly connected by bearing pin in side with bottom fixed part 32, and top can be around bearing pin
Rotation, constitutes circular cavity, top opening and closing part 33 and bottom fixed part when top opening and closing part 33 is fastened on bottom fixed part 32
32 are respectively provided with a pair of contiguous blocks in opposite side, and a pair of contiguous blocks of bottom fixed part 32 have pin-and-hole, 34 bottom screw rod of handle
There are pin-and-hole, handle 34 to pass through from the middle of two pairs of contiguous blocks, fixing axle 35 sequentially passes through each pin-and-hole, 34 top of handle is pressed in top
Two pairs of contiguous blocks are fixed together on a pair of contiguous blocks of opening and closing part 33, realize top opening and closing part 33 with bottom fixed part 32
Connect and separate.Handle 34 is screwed, handle screw is lifted up by threaded connection effect, drives the contiguous block of bottom fixed part 32
It is lifted up realizing the fastening to the outer tube；Release handle 34, rotates up certain distance, and handle 34 is with its screw rod around bearing pin
Rotate to the side of each contiguous block, so as to open cramping body, take out outer tube.With the increase of outer length of tube, the clamping device 3
Some sets can also be increased.
Outer tube 4 includes straight length, iso-curvature bend loss, variable-curvature bent pipe section and joint.The outer tube 4 is by lucite
Make, connected by joint between pipeline section.The tubing string test specimen is metal tube, as outer tube 4 is manufactured using lucite, described
Tubing string test specimen is using the relatively low aluminum pipe of hardness and copper pipe.The tubing string test specimen is divided into difference according to the difference of material, diameter, length
Model.The tubing string test specimen is placed in the outer tube 4, and the tubing string test specimen two ends are fixedly connected using anchor tip 7.
As shown in figure 4, anchor tip 7 includes being connected and composed by self-clinching fastener 71 and converter 72, also set on converter 72
Adjusting screw 73 is equipped with, and can realize consolidating for the tubing string test specimen respectively by adjusting screw 73 is installed, is unloaded on converter 72
Fixed connection and hinged connection.In the present invention, anchor tip 7 has two groups, and one is device input anchor tip 7, and one is device
Output end anchor tip 7, is located at the tubing string test specimen two ends respectively, and the self-clinching fastener 71 can fix the examination of different-diameter tubing string
Part, realizes that the clamping to the tubing string test specimen, 71 afterbody of self-clinching fastener are fixedly connected with the converter 72 by variable buckle 10, turns
72 other end of parallel operation connects connecting rod 75.
The experimental technique of above-mentioned shaft column pressure torsional buckling song simulation, which includes step：
A, be sequentially arranged clamping device 3, outer tube 4, static tubing string test specimen, anchor tip 7, torque loading device 2, stand under load device 6,
Axle power charger；By 4 shape of outer tube, clamping device 3 determines that placement number and position being distributed are fixed on level ground；Outward
Pipe 4 is fixed on the clamping device 3；Static tubing string test specimen is placed in the outer tube 4；Anchor tip 7 is fixedly connected on described
Tubing string test specimen two ends；, in described static tubing string test specimen one end, the torque loading device 2 is defeated for 2 fixed and arranged of torque loading device
Go out to hold shaft coupling 5 to be fixedly connected with the anchor tip converter 72；6 fixed and arranged of stand under load device is in the static tubing string test specimen
The other end, 6 contiguous block of stand under load device are fixedly connected with another group of anchor tip converter 72；Axle power charger is solid
2 other end of the torque loading device is arranged in surely, and the axle power charger pressure sensor is by variable buckle 10 and the torsion
2 decelerator 22 of square charger is fixedly connected；
B, the self-clinching fastener for unclamping input anchor tip 7 are fixedly connected with static tubing string test specimen, and driving push rod motor 11 is pushed away
Moving axis force loading device and torque loading device 2 advance, and measure pre- propulsive force by axle power charger pressure sensor；
C, self-clinching fastener 71 and static tubing string test specimen is fastenedly connected, the static tubing string test specimens of 11 pairs, driving push rod motor apply axially to press
Power is until tubing string test specimen priority generation Sine Buckling, Helical Buckling, observe and shoot the change of tubing string Specimen Shape, stop loading；
Static tubing string test specimen two ends are measured in real time by axle power charger pressure sensor and 6 pressure sensor of stand under load device axially to press
Power；
D, placement same model static state tubing string test specimen in outer tube 4 start servomotor 21 and apply moment of torsion to tubing string test specimen until quiet
Successively there is Sine Buckling, Helical Buckling in state tubing string test specimen, observe and shoot the change of tubing string Specimen Shape, stop loading；By moving
The moment of torsion born by state torque sensor 23 and the static tubing string test specimen two ends of the real-time measurement of static torque sensor 62；
, in outer tube 4, the static tubing string test specimens of 11 pairs, driving push rod motor apply axially pressure for E, placement same model static state tubing string test specimen
Power, meanwhile, start the static tubing string test specimen of servomotor 21 pairs and apply moment of torsion, static tubing string in the presence of axial compressive force and moment of torsion
Successively there is Sine Buckling, Helical Buckling in test specimen, observe and shoot static tubing string Specimen Shape change, stop loading；By pressure
Sensor measures static tubing string test specimen two ends axial compressive force in real time, real by dynamic torque sensor 26 and static torque sensor 62
When the moment of torsion that born of the static tubing string test specimen two ends of measurement；
F, using other models static state tubing string test specimen, repeat experimental procedure B-E.
Embodiment 2：（Different-diameter pit shaft）：
The present embodiment can achieve different-diameter shaft column Buckling modes simulated experiment under compresso-shear process.
The present embodiment is transformed on the basis of the experimental provision of embodiment 1, that is, change the diameter of outer tube, in clamping
Cushion block is added to realize the fixation of different-diameter outer tube in device, as shown in Figure 9.
The experimental provision of present embodiment can be used to study shadow of the annular clearance of pit shaft and tubing string to post-buckling behavior
Ring, its steps flow chart is identical with the experiment flow of embodiment 1.
The other structures of this specific embodiment are identical with embodiment 1 with invention effect, will not be described here.
Embodiment 3：（Different well sections）：
The present embodiment can achieve tubing string Buckling modes simulated experiment in different well sections under compresso-shear process.
Present embodiment is transformed on the basis of the experimental provision of embodiment 1, and different well section simulations can be by outer tube
Straight section, iso-curvature curved segment and variable curvature curved segment any combination obtain, change clamping device position, can achieve difference
The fixation of outer tube combination, as shown in Figure 10 and Figure 11.
The experimental provision of present embodiment can be used to study impact of the different well sections to post-buckling behavior, its steps flow chart
Identical with the experiment flow of embodiment 1.
The other structures of this specific embodiment are identical with embodiment 1 with invention effect, will not be described here.
Embodiment 4：（Axial compressive force effect tubing string applies different the way of restraint）：
Present embodiment can achieve the Buckling modes simulated experiment of different constraint tubing strings in independent axial compressive force effect well-sinking.
Present embodiment is transformed on the basis of the experimental provision of embodiment 1, and 1 tubing string test specimen of embodiment is by fixing
Joint 7 realizes that fixed constraint connects, and unloads the adjusting screw 73 on down-converter 72, and self-clinching fastener 71 is by the pin on converter 72
Axle can be rotated in the horizontal plane, realize the hinged constraint connection of tubing string test specimen, as shown in Figure 12 and Figure 13.
The experimental provision of present embodiment can be used to study impact of the tubing string the way of restraint to shaft column Buckling modes,
Its steps flow chart is identical with the experiment flow of embodiment 1.
The other structures of this specific embodiment are identical with embodiment 1 with invention effect, will not be described here.
Embodiment 5：（Flexing of the rotation tubing string by axial compressive force）：
Present embodiment can achieve the Buckling modes simulated experiment of swivelling pipe post in compresso-shear process well-sinking.Manage in present embodiment
Post test specimen two ends moment of torsion is all measured using dynamic torque sensor 23, can simulate the flexing of swivelling pipe post in compresso-shear process well-sinking
Behavior.Its structure is as follows：
This shaft column pressure torsional buckling song analogue experiment installation includes axial compressive force charger 1, torque loading device 2, folder
Device 3, outer tube 4, rotation tubing string test specimen, anchor tip 7, stand under load device is held, axial compressive force charger 1 is fixed on first base
On 14, axial compressive force charger 1 connects torque loading device 2, and torque loading device 2 is slidably connected in second base 27,
Dynamic tubing string test specimen is arranged in outer tube 4, and outer tube 4 is clamped by least one clamping device 3, and rotation tubing string test specimen two ends are led to respectively
Cross anchor tip 7 to be connected between torque loading device 2 and stand under load device；Axial compressive force charger 1 is provided with first pressure
Sensor 12 and stay wire sensor 13, torque loading device 2 include dynamic torque sensor 23 and angular displacement sensor 24, first
Pressure sensor 12 connects the decelerator 22 of torque loading device 2, and stay wire sensor bracing wire is connected on decelerator 22.
As shown in figure 14, stand under load device include the 4th base 81, dynamic torque tactility apparatus 82, the 3rd pressure sensor 85,
Little bearing 84, the 4th base 81 are fixed on level ground, arrange guide rail 9 on the 4th base 81, and dynamic torque tactility apparatus 82 is pacified
It is mounted on tactility apparatus base 83, tactility apparatus base 83 is slidably connected with guide rail 9 by guide rail slide block, dynamic torque tactility apparatus base
83 can slide on the rail 9；82 input of dynamic torque tactility apparatus is bonded by 5 its corresponding anchor tip 7 of shaft coupling,
Little bearing 84 is arranged between 82 output end of dynamic torque tactility apparatus and the riser 86 of tactility apparatus base 83, realizes both rotations
It does not interfere with each other；3rd pressure sensor 85 is connected to the opposite side of 83 riser 86 of tactility apparatus base, the 3rd pressure by variable buckle 10
Sensor 85 is connected with the 4th base 81.
Axial compressive force charger 1, torque loading device 2 in the present embodiment, clamping device 3, outer tube 4, anchor tip 7
Same as Example 1.
Claims (10)
1. a kind of shaft column presses torsional buckling song analogue experiment installation, it is characterised in that：This shaft column presses torsional buckling Qu Mo
Draft experiment device includes axial compressive force charger（1）, torque loading device（2）, clamping device（3）, outer tube（4）, static pipe
Post test specimen, anchor tip（7）, stand under load device（6）, axial compressive force charger（1）It is fixed on first base（14）On, axially press
Force loading device（1）Connection torque loading device（2）, torque loading device（2）It is slidably connected to second base（27）On, static
Tubing string test specimen is arranged at outer tube（4）Interior, outer tube（4）By at least one clamping device（3）Clamping, static tubing string test specimen two ends difference
By anchor tip（7）It is connected to torque loading device（2）With stand under load device（6）Between；Axial compressive force charger（1）Arrange
There is first pressure sensor（12）And stay wire sensor（13）, torque loading device（2）Including dynamic torque sensor（23）With
Angular displacement sensor（24）, first pressure sensor（12）Connection torque loading device（2）Decelerator（22）, stay wire sensor
Bracing wire is connected to decelerator base（25）On；Stand under load device（6）Including the 3rd base（61）, static torque sensor（62）,
Two pressure sensors（63）, front apron（64）, backboard（67）, the 3rd base（61）Upper setting guide rail（9）, front apron（64）Logical
, on small bearing bracket, small bearing bracket is by guide rail slide block and guide rail for too small bearing（9）It is slidably connected, backboard（67）Pass through
Guide rail slide block and guide rail（9）It is slidably connected, front apron（64）By connecting rod and corresponding anchor tip（7）Connection, static torsion
Square sensor（62）One end and front apron（64）Bonded, static torque sensor（62）The other end is fixed on backboard（67）
On, backboard（67）Opposite side connects second pressure sensor（63）, second pressure sensor（63）With the 3rd base（61）Gu
Fixed connection, front apron（64）With backboard（67）Between be provided with big bearing（66）.
2. shaft column according to claim 1 presses torsional buckling song analogue experiment installation, it is characterised in that：Described axial direction
Pressure loading device（1）Including push-rod electric machine（11）, first pressure sensor（12）, stay wire sensor（13）, push away push-rod electric machine
（11）One end is fixed on first base（14）Column on, push-rod electric machine（11）Fuselage passes through frame-type geometrical clamp（15）It is fixed,
Push-rod electric machine（11）Output end passes through connector（16）Connection first pressure sensor（12）, first pressure sensor（12）Another
One end passes through variable buckle（10）The described decelerator of connection（22）；Stay wire sensor（13）It is fixed on first base（14）On, first
Base（14）Rear end has bar shaped through groove in the width direction（17）.
3. shaft column according to claim 1 and 2 presses torsional buckling song analogue experiment installation, it is characterised in that：Described
Torque loading device（2）Including servomotor（21）, decelerator（22）, dynamic torque sensor（23）, angular displacement sensor
（24）, servomotor（21）Connection reducer（22）, decelerator（22）It is arranged on decelerator base（25）On, decelerator base
（25）By guide rail slide block and second base（27）The guide rail of upper setting（9）It is slidably connected, dynamic torque sensor（23）Install
In dynamic torque sensor base（26）On, dynamic torque sensor base（26）Also by guide rail slide block and second base（27）
It is slidably connected, decelerator（22）Connection shaft coupling（5）；Angular displacement sensor（24）Dynamic torque sensor is fixed on by support
Base（26）On, angular displacement sensor（24）It is flexibly connected with support, angular displacement sensor（24）Measurement end is overlapped on shaft coupling
（5）Outer wall on；Shaft coupling（5）Anchor tip with its relative set（7）Connection, second base（27）Front end has connection
Plate, second base（27）With first base（14）By bar shaped through groove（17）Connection is bolted with connecting plate.
4. shaft column according to claim 3 presses torsional buckling song analogue experiment installation, it is characterised in that：Described clamping
Device（3）Including Holding seat（31）, cramping body, handle（34）, handle（34）Connected and composed by handwheel and screw flight, clamped
Body has bottom fixed part（32）With top opening and closing part（33）, top opening and closing part（33）With bottom fixed part（32）Pass through in side
Bearing pin is flexibly connected, top opening and closing part（33）It is fastened on bottom fixed part（32）Circular cavity, top opening and closing part was constituted when upper
（33）With bottom fixed part（32）A pair of contiguous blocks, bottom fixed part are respectively provided with opposite side（32）A pair of contiguous blocks there is pin
Hole, handle（34）The screw rod of bottom also has pin-and-hole, handle（34）Pass through from the middle of two pairs of contiguous blocks, fixing axle（35）Sequentially pass through
Each pin-and-hole, handle（34）Top is pressed in top opening and closing part（33）A pair of contiguous blocks on two pairs of contiguous blocks are fixed together.
5. shaft column according to claim 4 presses torsional buckling song analogue experiment installation, it is characterised in that：Described fixation
Joint（7）Including by self-clinching fastener（71）And converter（72）Connect and compose, converter（72）On be additionally provided with adjusting screw
（73）, by converter（72）Upper installation, unload adjusting screw（73）Realize respectively the tubing string test specimen be fixedly connected with
Hinged connection.
6. shaft column according to claim 5 presses torsional buckling song analogue experiment installation, it is characterised in that：Described rear gear
Plate（67）Side has multiple horizontal columns（68）, each horizontal columns（68）End fix a connection ring（69）On, backboard
（67）Opposite side arranges variable buckle（10）.
7. shaft column according to claim 6 presses torsional buckling song analogue experiment installation, it is characterised in that：Described each
Pressure sensor, stay wire sensor（13）, dynamic torque sensor（23）, angular displacement sensor（24）, static torque sensor
（62）Data collecting system is all connected with, data collecting system is connected with computer.
8. shaft column according to claim 7 presses torsional buckling song analogue experiment installation, it is characterised in that：Described clamping
Two piece cushion blocks are provided with vivo（36）, cushion block（36）For half cylinder, two pieces of cushion blocks（36）Top opening and closing part is located at respectively（33）With
Bottom fixed part（32）.
9. the shaft column described in a kind of claim 8 presses the experimental technique of torsional buckling song analogue experiment installation, it is characterised in that：
A, it is sequentially arranged clamping device（3）, outer tube（4）, static tubing string test specimen, anchor tip（7）, torque loading device（2）, receive
Carry and put（6）, axial compressive force charger（1）；Clamping device（3）By outer tube（4）Shape determines lays number and position and divides
Cloth is fixed on level ground；Outer tube（4）It is fixed on the clamping device（3）On；Static tubing string test specimen is placed in the outer tube（4）
Interior；Anchor tip（7）It is fixedly connected on the tubing string test specimen two ends；Torque loading device（2）Fixed and arranged is in the static pipe
Post test specimen one end, the torque loading device（2）Output end shaft coupling（5）With the anchor tip（7）Converter（72）Fixed
Connection；Stand under load device（6）Fixed and arranged is in the static tubing string test specimen other end, the stand under load device（6）Contiguous block with described
Another group of anchor tip（7）Converter（72）It is fixedly connected；Axial compressive force charger（1）Fixed and arranged is loaded in the moment of torsion
Device（2）The other end, the axial compressive force charger（1）Pressure sensor passes through variable buckle（10）With the torque loading device
（2）Decelerator（22）It is fixedly connected；
B, release input anchor tip（7）Self-clinching fastener（71）With being fixedly connected for static tubing string test specimen, driving push rod electricity
Machine（11）Promote axial pressure loading device（1）And torque loading device（2）Advance, by axial compressive force charger（1）Pressure
Sensor measures pre- propulsive force；
C, it is fastenedly connected self-clinching fastener（71）With static tubing string test specimen, driving push rod motor（11）Axle is applied to static tubing string test specimen
Successively there is Sine Buckling, Helical Buckling to pressure up to tubing string test specimen, observe and shoot the change of tubing string Specimen Shape, stop adding
Carry；By axial compressive force charger（1）Pressure sensor and stand under load device（6）Pressure sensor measures static tubing string test specimen in real time
Two ends axial compressive force；
D, placement same model static state tubing string test specimen are in outer tube（4）Interior, start servomotor（21）Moment of torsion is applied to tubing string test specimen straight
Successively there is Sine Buckling, Helical Buckling to static tubing string test specimen, observe and shoot the change of tubing string Specimen Shape, stop loading；
By dynamic torque sensor（23）With static torque sensor（62）The moment of torsion born by the static tubing string test specimen two ends of measurement in real time；
E, placement same model static state tubing string test specimen are in outer tube（4）Interior, driving push rod motor（11）Axle is applied to static tubing string test specimen
To pressure, meanwhile, start servomotor（21）Apply moment of torsion to static tubing string test specimen, quiet in the presence of axial compressive force and moment of torsion
Successively there is Sine Buckling, Helical Buckling in state tubing string test specimen, observe and shoot static tubing string Specimen Shape change, stop loading；
Static tubing string test specimen two ends axial compressive force is measured in real time by pressure sensor, by dynamic torque sensor（23）Pass with static torque
Sensor（62）The moment of torsion born by the static tubing string test specimen two ends of measurement in real time；
F, using other models static state tubing string test specimen, repeat experimental procedure B-E.
10. a kind of shaft column presses torsional buckling song analogue experiment installation, it is characterised in that：This shaft column presses torsional buckling Qu Mo
Draft experiment device includes axial compressive force charger（1）, torque loading device（2）, clamping device（3）, outer tube（4）, swivelling pipe
Post test specimen, anchor tip（7）, stand under load device, axial compressive force charger（1）It is fixed on first base（14）On, axial compressive force
Charger（1）Connection torque loading device（2）, torque loading device（2）It is slidably connected to second base（27）On, dynamic pipe
Post test specimen is arranged at outer tube（4）Interior, outer tube（4）By at least one clamping device（3）Clamping, rotation tubing string test specimen two ends are led to respectively
Cross anchor tip（7）It is connected to torque loading device（2）With stand under load device（6）Between；Axial compressive force charger（1）It is provided with
First pressure sensor（12）And stay wire sensor（13）, torque loading device（2）Including dynamic torque sensor（23）And angle
Displacement transducer（24）, first pressure sensor（12）Connection torque loading device（2）Decelerator（22）, stay wire sensor drawing
Line is connected to decelerator base（25）On；Stand under load device includes the 4th base（81）, dynamic torque tactility apparatus（82）, the 3rd pressure
Sensor（85）, little bearing（84）, the 4th base（81）Upper setting guide rail（9）, dynamic torque tactility apparatus（82）It is arranged on sense of touch
Device base（83）On, tactility apparatus base（83）By guide rail slide block and guide rail（9）It is slidably connected, dynamic torque tactility apparatus（82）Defeated
Enter end and pass through shaft coupling（5）Its corresponding anchor tip（7）Bonded, little bearing（84）It is arranged on dynamic torque tactility apparatus
（82）Output end and tactility apparatus base（83）Riser（86）Between, the 3rd pressure sensor（85）By variable buckle（10）It is connected to
Tactility apparatus base（83）Riser（86）Opposite side, the 3rd pressure sensor（85）With the 4th base（81）Connection.
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