CN104807704B - A kind of composite bimetal pipe bend test device - Google Patents
A kind of composite bimetal pipe bend test device Download PDFInfo
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- CN104807704B CN104807704B CN201510233445.9A CN201510233445A CN104807704B CN 104807704 B CN104807704 B CN 104807704B CN 201510233445 A CN201510233445 A CN 201510233445A CN 104807704 B CN104807704 B CN 104807704B
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Abstract
The invention discloses a kind of composite bimetal pipe bend test device, including base, bending force load maintainer is installed on base, axial force load maintainer and distortion power load maintainer, foil gauge is pasted with composite bimetal pipe outer wall to be tested, camera is provided with composite bimetal pipe to be tested, composite bimetal pipe to be tested is located above base, distortion power load maintainer is arranged in the middle part of composite bimetal pipe to be tested, the quantity of bending force load maintainer and axial force load maintainer is two, two axial force load maintainers are symmetricly set on composite bimetal pipe two ends to be tested, two bending force load maintainers are symmetricly set on the distortion power load maintainer left and right sides, bending force load maintainer is arranged between two axial force load maintainers.The present invention can be achieved to above and below composite bimetal pipe bending force loading, axial force loading and distortion power load, can single stress bend test, can also be combined stress bend test, situation in composite bimetal pipe can be monitored.
Description
Technical field
The present invention relates to a kind of bend test device, more particularly, to a kind of composite bimetal pipe bend test device.
Background technology
In recent years, due to the excellent performance such as high pressure resistant, corrosion-resistant of composite bimetal pipe, composite bimetal pipe exists
Oil, chemical industry are widely used.Due to its superior cost performance, composite bimetal pipe has been widely used for
In the oil and gas exploitation environment of land, and in pipe laying, the corresponding pipe fitting of adapted, pipe bending is less or need not be curved
Song, therefore composite bimetal pipe is preferable in land oil and gas industry application effect.With offshore oil gas extraction,
Composite bimetal pipe also begins to be applied in offshore oil natural gas extraction environment, but composite bimetal pipe application Yu Haiyang stone
In oily natural gas extraction environment, it is necessary to meet certain bending property.Due to the special construction environment in ocean, applied different from land
Work environment, it is necessary to be bent when pipeline is laid, and sometimes requires that pipeline is in elastic bending state.And bimetallic
Multiple tube is due to its special structure, and it is likely to occur base lining in bending and separated, the phenomenon such as bushing pipe corrugation, and this is double golden by influence
Belong to the performance of multiple tube.So being filled in the urgent need to developing a kind of experiment to composite bimetal pipe degree of crook and state
Put, maximum flexion of the composite bimetal pipe in engineer applied and state can be detected by the experimental rig, really
Determine the minimum bending radius of composite bimetal pipe, it is ensured that the base tube and bushing pipe of composite bimetal pipe will not go out under the degree of crook
Now separation, wrinkling.
It is Application No. 201310240542.1, entitled《Full size metal multiple tube four-point bending test device》China
Patent discloses a kind of metal composite pipe experimental rig, and it is mainly by base, two load support posts, tested metal composite pipe clamps
Button, two load cylinders, sensor, foil gauge, deformeter compositions.The experimental rig has the following disadvantages：(1) gold can only be simulated
Belong to the bending loading of multiple tube upwards, i.e., can only simulate the unidirectional bending loading of metal composite pipe, it is impossible to simulate metal composite
Pipe above-below direction alternating bending CYCLIC LOADING, therefore, the experimental rig can not be drawn under the effect of alternating bending CYCLIC LOADING, golden
Belong to the bending resistance of multiple tube；(2) metal composite pipe two ends can not load axial force and distortion power when bending, but in reality
Working environment under, usually simultaneously with two ends axial force or distortion power when metal composite pipe is bent, therefore, the experimental rig
Result of the test can not really reflect the bending resistance of metal composite pipe；(3) when experiment is carried out, the experimental rig can only be gathered
The strain variation situation of compound pipe outer wall, it is impossible to monitor the situation of change of multiple tube corrosion-resistant alloy layer, therefore, the experiment in real time
The integrality of metal composite pipe inner lining corrosion resisting alloy layer when device can not detect bending, it is impossible to show that the liner of metal composite pipe is resistance to
Lose alloy-layer bending resistance.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency of the prior art, there is provided a kind of composite bimetal pipe bend test
Device, its is simple in construction, reasonable in design and is easy to operation, can be achieved to bending force loading, axial force above and below composite bimetal pipe
Loading and distortion power loading, can single stress bend test, can also be combined stress bend test, bimetallic can be monitored in real time
Situation of change inside multiple tube.
To achieve the above object, the technical solution adopted by the present invention is：A kind of composite bimetal pipe bend test device, its
It is characterised by：Including base, the bending force loading to composite bimetal pipe load bending power to be tested is installed on the base
Mechanism, to composite bimetal pipe to be tested load axial force axial force load maintainer and to composite bimetal pipe to be tested load
It is pasted with the distortion power load maintainer of distortion power, the outer wall of the composite bimetal pipe to be tested for detecting double gold to be tested
Belong to being provided with the foil gauge of multiple tube dependent variable, the composite bimetal pipe to be tested and be combined for shooting bimetallic to be tested
The camera of pipe flexural deformation, the composite bimetal pipe to be tested is located at the top of base, and the distortion power load maintainer is set
Put at the middle part of composite bimetal pipe to be tested, the quantity of the bending force load maintainer and axial force load maintainer is two
Individual, two axial force load maintainers are symmetricly set on the two ends of composite bimetal pipe to be tested, and two bending forces add
Mounted mechanism is symmetricly set on the left and right sides of the distortion power load maintainer, and the bending force load maintainer is arranged on described in two
Between axial force load maintainer.
A kind of above-mentioned composite bimetal pipe bend test device, it is characterised in that：The axial force load maintainer includes
Axial force load cylinder, support base, power shifter lever, power loading axis and the first hydrostatic sensor, the axial force load cylinder
Piston rod outer end and the lower end of power shifter lever be hinged, first hydrostatic sensor be arranged on axial force load cylinder cylinder
On cylinder and for measuring the oil pressure in the cylinder barrel, the power shifter lever and support seat hinge, the power loading axis passes through axle
The upper end for being rotatably installed in power shifter lever is held, the power loading axis is fixedly connected with composite bimetal pipe to be tested, the axle
It is each attached to the cylinder barrel and support base of power load cylinder on base.
A kind of above-mentioned composite bimetal pipe bend test device, it is characterised in that：The power loading axis with it is to be tested double
The connected mode of metal composite pipe is welding.
A kind of above-mentioned composite bimetal pipe bend test device, it is characterised in that：The bending force load maintainer includes
Bending force load cylinder, multiple tube clip, the second hydrostatic sensor and displacement transducer, second hydrostatic sensor are arranged on
On the cylinder barrel of bending force load cylinder and for measuring the oil pressure in the cylinder barrel, institute's displacement sensors add installed in bending force
Carry on oil cylinder and for the displacement for the piston rod for measuring bending force load cylinder, the multiple tube clip adds installed in bending force
The piston rod outer end of oil cylinder is carried, the multiple tube clip includes the upper clip and lower clamping piece being oppositely arranged, and the upper clip is with
Intermediate plate is bolted to connection, and the piston rod outer end of the lower clamping piece and bending force load cylinder is hinged, described to be tested double
Metal composite pipe is fixed on base through upper clip and the space of lower clamping piece formation, the cylinder barrel of the bending force load cylinder.
A kind of above-mentioned composite bimetal pipe bend test device, it is characterised in that：The horizontal stroke of the upper clip and lower clamping piece
Cross sectional shape is semicircle, the upper clip and lower clamping piece it is equal in magnitude.
A kind of above-mentioned composite bimetal pipe bend test device, it is characterised in that：The distortion power load maintainer includes
Preceding distortion power load cylinder, rear distortion power load cylinder, power transition arm, the 3rd hydrostatic sensor and the 4th hydrostatic sensor, institute
The front end and the piston rod end of preceding distortion power load cylinder for stating power transition arm are hinged, the rear end of the power transition arm and rear distortion
The piston rod end of power load cylinder is hinged, the 3rd hydrostatic sensor be arranged on preceding distortion power load cylinder cylinder barrel on and
For measuring the oil pressure in the cylinder barrel, the 4th hydrostatic sensor is arranged on the cylinder barrel of rear distortion power load cylinder and used
In measuring the oil pressure in the cylinder barrel, the power transition arm is fixedly connected with composite bimetal pipe to be tested, the preceding distortion power
The cylinder barrel of load cylinder and rear distortion power load cylinder is hinged with base.
A kind of above-mentioned composite bimetal pipe bend test device, it is characterised in that：The power transition arm with it is to be tested double
The connected mode of metal composite pipe is welding.
A kind of above-mentioned composite bimetal pipe bend test device, it is characterised in that：The foil gauge is arranged on to be tested
The middle part of composite bimetal pipe, the foil gauge includes axial strain piece and hoop strain piece, and the axial strain piece is along to be measured
The axially mounted of composite bimetal pipe is tried, ring of the hoop strain piece along composite bimetal pipe to be tested is installed.
A kind of above-mentioned composite bimetal pipe bend test device, it is characterised in that：Opened along its length on the base
There are multiple adjustment holes, multiple adjustment holes are uniformly laid.
A kind of above-mentioned composite bimetal pipe bend test device, it is characterised in that：The composite bimetal pipe to be tested
The sliding machine that can be slided along its inwall is inside additionally provided with, the camera is arranged on sliding machine.
The present invention has advantages below compared with prior art：
1st, the present invention is simple in construction, reasonable in design and is easy to operation.
2nd, the present invention is realized to iterative cycles load bending power above and below composite bimetal pipe, logical by bending force load maintainer
Axial force load maintainer is crossed to realize to composite bimetal pipe loading axial force and realize to bimetallic by distortion power load maintainer
Multiple tube loads distortion power, and bending force load maintainer, axial force load maintainer and distortion power load maintainer can be used alone,
It can be used in any combination, carry out composite bimetal pipe stress bend test.
3rd, the present invention is by the camera in composite bimetal pipe to be tested, and captured in real-time bimetallic to be tested is answered
The flexural deformation situation inside pipe is closed, to monitor the situation of change of multiple tube corrosion-resistant alloy layer in being carried out in experiment in real time.
4th, the present invention by being provided with multiple adjustment holes along its length on base, and multiple adjustment holes are uniformly laid, this
Sample can be adjusted between the distance between two axial force load maintainers, and two bending force load maintainers of regulation by adjustment hole
Distance, to realize the bend test to the composite bimetal pipe to be tested of various length.
5th, the present invention is wide using scope, not only can use and is effectively applicable in the bend test of composite bimetal pipe, also can use
In the bend test to other tubing or section bar.
Below by drawings and examples, the present invention is described in further detail.
Brief description of the drawings
Fig. 1 is use state figure of the invention.
Fig. 2 is Fig. 1 top view.
Fig. 3 is enlarged drawing at Fig. 2 A.
Fig. 4 is the installation relation schematic diagram of axial force load maintainer of the present invention and composite bimetal pipe to be tested.
Fig. 5 is the use state figure of axial force load maintainer of the present invention.
Fig. 6 is the installation relation schematic diagram of bending force load maintainer of the present invention and composite bimetal pipe to be tested.
Fig. 7 is the installation relation schematic diagram of distortion power load maintainer of the present invention and composite bimetal pipe to be tested.
Fig. 8 is the use state figure of distortion power load maintainer of the present invention.
Fig. 9 is bent upwards the state diagram of composite bimetal pipe to be tested for the present invention.
Figure 10 is bent downwardly the state diagram of composite bimetal pipe to be tested for the present invention.
Description of reference numerals:
1-base；2-support base；3-axial force load cylinder；
4-the second hydrostatic sensor；5-the first hydrostatic sensor；6-the three hydrostatic sensor；
7-power shifter lever；8-power loading axis；9-the four hydrostatic sensor；
10-displacement transducer；11-foil gauge；11-1-axial strain piece；
11-2-hoop strain piece；12-power transition arm；13-1-preceding distortion power load cylinder；
13-2-rear distortion power load cylinder；14-multiple tube clip；14-1-upper clip；
14-2-lower clamping piece；14-3-bolt；15-bending force load cylinder；
16-adjustment hole；17-camera；18-sliding machine；
19-composite bimetal pipe to be tested.
Embodiment
As depicted in figs. 1 and 2, the present invention includes being provided with to composite bimetal pipe to be tested on base 1, the base 1
The bending force load maintainer of 19 load bending power, the axial force load maintainer that axial force is loaded to composite bimetal pipe 19 to be tested
With to composite bimetal pipe 19 to be tested load distortion power distortion power load maintainer, the composite bimetal pipe 19 to be tested
The foil gauge 11 for detecting the dependent variable of composite bimetal pipe 19 to be tested is pasted with outer wall, the bimetallic to be tested is combined
The camera 17 for shooting the flexural deformation of composite bimetal pipe 19 to be tested is provided with pipe 19, the bimetallic to be tested is answered
The top that pipe 19 is located at base 1 is closed, the distortion power load maintainer is arranged on the middle part of composite bimetal pipe 19 to be tested, described
The quantity of bending force load maintainer and axial force load maintainer is two, and two axial force load maintainers are symmetricly set on
The two ends of composite bimetal pipe 19 to be tested, two bending force load maintainers are symmetricly set on the distortion power load maintainer
The left and right sides, the bending force load maintainer is arranged between two axial force load maintainers.
As shown in Figure 4 and Figure 5, the axial force load maintainer includes axial force load cylinder 3, support base 2, power conversion thick stick
Bar 7, the hydrostatic sensor 5 of power loading axis 8 and first, piston rod outer end and the power shifter lever 7 of the axial force load cylinder 3
Lower end is hinged, and first hydrostatic sensor 5 is arranged on the cylinder barrel of axial force load cylinder 3 and for measuring in the cylinder barrel
Oil pressure, the power shifter lever 7 is hinged with support base 2, and the power loading axis 8 is rotatably installed in power shifter lever by bearing
7 upper end, the power loading axis 8 is fixedly connected with composite bimetal pipe 19 to be tested, the cylinder barrel of the axial force load cylinder 3
It is each attached to support base 2 on base 1.In the present embodiment, the power loading axis 8 and the connection of composite bimetal pipe 19 to be tested
Mode is welding.During work, axial force load cylinder 3 is multiple to bimetallic to be tested by power shifter lever 7 and power loading axis 8
Close the loading axial force of pipe 19.
As indicated with 6, the bending force load maintainer includes bending force load cylinder 15, multiple tube clip 14, the second hydraulic pressure
Sensor 4 and displacement transducer 10, second hydrostatic sensor 4 are arranged on the cylinder barrel of bending force load cylinder 15 and are used for
The oil pressure in the cylinder barrel is measured, institute's displacement sensors 10 are arranged on bending force load cylinder 15 and for measuring bending force
The displacement of the piston rod of load cylinder 15, the multiple tube clip 14 is arranged on outside the piston rod of bending force load cylinder 15
End, the multiple tube clip 14 includes the upper clip 14-1 and lower clamping piece 14-2, the upper clip 14-1 and lower folder being oppositely arranged
Piece 14-2 is fixedly connected by bolt 14-3, and the lower clamping piece 14-2 and bending force load cylinder 15 piston rod outer end are hinged,
The composite bimetal pipe to be tested 19 is through the space of upper clip 14-1 and lower clamping piece 14-2 formation, and the bending force loading is oily
The cylinder barrel of cylinder 15 is fixed on base 1.In the present embodiment, the shape of cross section of the upper clip 14-1 and lower clamping piece 14-2 are
Semicircle, the upper clip 14-1's and lower clamping piece 14-2 is equal in magnitude.Displacement transducer 10 uses Jinan scientific ＆ technical corporation of Case
The stay wire displacement sensor of the model KS30 series of production.Multiple tube clip 14 is main by upper clip 14-1 and lower clamping piece 14-2
Composite bimetal pipe 19 to be tested dress, is clipped in the middle by composition by bolt 14-3, lower clamping piece 14-2 and bending force load cylinder
15 piston rod outer end is hinged, and this sampling composite tube clip 14 can be swung.During work, bending force load cylinder 15 moves up and down,
Composite bimetal pipe alternating bending about 19 to be tested is driven by multiple tube clip 14.
As shown in Figure 7 and Figure 8, the distortion power load maintainer adds including preceding distortion power load cylinder 13-1, rear distortion power
Carry oil cylinder 13-2, power transition arm 12, the 3rd hydrostatic sensor 6 and the 4th hydrostatic sensor 9, the front end of the power transition arm 12 with
Preceding distortion power load cylinder 13-1 piston rod end is hinged, the rear end of the power transition arm 12 and rear distortion power load cylinder
13-2 piston rod end is hinged, the 3rd hydrostatic sensor 6 be arranged on preceding distortion power load cylinder 13-1 cylinder barrel on and
For measuring the oil pressure in the cylinder barrel, the 4th hydrostatic sensor 9 is arranged on rear distortion power load cylinder 13-2 cylinder barrel
Above and for measuring the oil pressure in the cylinder barrel, the power transition arm 12 is fixedly connected with composite bimetal pipe 19 to be tested, institute
The cylinder barrel for stating preceding distortion power load cylinder 13-1 and rear distortion power load cylinder 13-2 is hinged with base 1.In the present embodiment, institute
The connected mode for stating power transition arm 12 and composite bimetal pipe 19 to be tested is welding.During work, preceding distortion power load cylinder 13-
1 and rear distortion power load cylinder 13-2 loads distortion power by power transition arm 12 to composite bimetal pipe 19 to be tested.
As shown in figure 3, the foil gauge 11 is arranged on the middle part of composite bimetal pipe 19 to be tested, the foil gauge 11 is wrapped
Include the axle of axial strain piece 11-1 and hoop strain piece 11-2, the axial strain piece 11-1 along composite bimetal pipe 19 to be tested
To installation, rings of the hoop strain piece 11-2 along composite bimetal pipe 19 to be tested is installed.In the present embodiment, foil gauge 11
Quantity be six groups, six groups of foil gauges 11 are spaced apart.
As shown in Fig. 2 being provided with multiple adjustment holes 16 on the base 1 along its length, multiple adjustment holes 16 are uniformly laid,
The distance between two axial force load maintainers can be adjusted by adjustment hole 16, and two bending force load maintainers of regulation it
Between distance, to realize the bend test to the composite bimetal pipe to be tested 19 of various length.
As shown in figure 1, being additionally provided with the slip that can be slided along its inwall in the composite bimetal pipe to be tested 19
Dolly 18, the camera 17 is arranged on sliding machine 18.
The present invention operation principle be：Load deflection step according to being set before experiment carries out load test, and curved every time
During song loading, according to test requirements document, two ends that can be in advance to composite bimetal pipe 19 to be tested load certain axial force.
Axial force load cylinder 3 is by piston rod top or draws in row loading force, and by power shifter lever 7 is loaded on active force to be measured
The axial direction of composite bimetal pipe 19 is tried, the first hydrostatic sensor 5 installed on the cylinder body of composite bimetal pipe 19 to be tested can be with
The pressure in cylinder barrel is detected, axial force load cylinder 3 can be obtained by be multiplied calculating with the load-carrying area of cylinder barrel
Loading effect power, loading effect power is multiplied by power shifter lever 7 and can be obtained by the axially loaded of composite bimetal pipe 19 to be tested
Active force.Certain distortion power, preceding torsion can also can be loaded to composite bimetal pipe 19 to be tested according to requirement of experiment in advance
Bent power load cylinder 13-1 and rear distortion power load cylinder 13-2 is by piston rod top or draws in row loading force, and changed by power
Arm 12 loads on moment of torsion the 3rd liquid installed on composite bimetal pipe 19 to be tested, preceding distortion power load cylinder 13-1 cylinder barrel
Pressure sensor 6 can detect the 4th hydraulic sensing installed on the pressure in cylinder barrel, distortion power load cylinder 13-2 cylinder barrel
Device 9 can detect the pressure in cylinder barrel, and distortion power adds before being obtained by the calculating that is multiplied with the progress of the load-carrying area of cylinder barrel
Oil cylinder 13-1 and rear distortion power load cylinder 13-2 loading effect power is carried, preceding distortion power load cylinder 13-1 and rear distortion power add
Carry oil cylinder 13-2 and be multiplied by the distortion loading effect that corresponding power transition arm can be obtained by composite bimetal pipe 19 to be tested respectively
Power.Every time during loading, the piston rod of bending force load cylinder 15 is by moving up or down, so as to drive bimetallic to be tested
Multiple tube 19 is bent upwards or is bent downwardly (as shown in Figure 9 and Figure 10), installed on the cylinder barrel of bending force load cylinder 15
Two hydrostatic sensors 4 can detect the pressure in cylinder barrel, can be obtained by the calculating that is multiplied with the progress of the load-carrying area of cylinder barrel
The loading effect power of bending force load cylinder 15 up or down.Meanwhile, this experimental rig can be treated by the detection of foil gauge 11
The dependent variable of composite bimetal pipe 19 is tested, strain variation feelings when composite bimetal pipe 19 to be tested is bent on the one hand are observed
Condition, on the other hand utilizes multiple tube deformation formula R=D/2 εIn flat axleThe minimum bending radius R of composite bimetal pipe is calculated, R's
Unit is mm；Wherein, D is the nominal outside diameter of composite bimetal pipe, and D unit is mm, εIn flat axleFor the center of composite bimetal pipe
The axial mean strain amount of point.In addition, this experimental rig can be shot inside composite bimetal pipe 19 to be tested by camera 17
Flexural deformation, that is, observe whether inner lining corrosion resisting alloy layer is wrinkled when multiple composite bimetal pipe 19 to be tested is bent and bulge is lost
Effect, under every step load deflection, passes through radius of curvature and the situation of change of observation inner surface, it is possible to obtain ensureing double
In the case of metal composite pipe is complete, the maximum flexion and minimum bending radius of composite bimetal pipe, and then evaluate bimetallic
The bending property of multiple tube.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention
Any simple modification, change and equivalent structure transformation that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (7)
1. a kind of composite bimetal pipe bend test device, it is characterised in that：Including base (1), it is provided with the base (1)
Bending force load maintainer to composite bimetal pipe to be tested (19) load bending power, to composite bimetal pipe to be tested (19) plus
Carry the axial force load maintainer of axial force and the distortion power load maintainer of distortion power loaded to composite bimetal pipe to be tested (19),
It is pasted with the outer wall of the composite bimetal pipe to be tested (19) for detecting composite bimetal pipe to be tested (19) dependent variable
Foil gauge (11), is provided with the composite bimetal pipe (19) to be tested for shooting composite bimetal pipe to be tested (19)
The camera (17) of flexural deformation, the composite bimetal pipe (19) to be tested is located at the top of base (1), and the distortion power adds
Mounted mechanism is arranged on the middle part of composite bimetal pipe to be tested (19), the bending force load maintainer and axial force load maintainer
Quantity is two, and two axial force load maintainers are symmetricly set on the two ends of composite bimetal pipe to be tested (19), two
The individual bending force load maintainer is symmetricly set on the left and right sides of the distortion power load maintainer, the bending force load maintainer
It is arranged between two axial force load maintainers；
The distortion power load maintainer includes preceding distortion power load cylinder (13-1), rear distortion power load cylinder (13-2), power turn
Change arm (12), the 3rd hydrostatic sensor (6) and the 4th hydrostatic sensor (9), front end and the preceding distortion of the power transition arm (12)
The piston rod end of power load cylinder (13-1) is hinged, the rear end of the power transition arm (12) and rear distortion power load cylinder (13-
2) piston rod end is hinged, and the 3rd hydrostatic sensor (6) is arranged on the cylinder barrel of preceding distortion power load cylinder (13-1)
And for measuring the oil pressure in the cylinder barrel, the 4th hydrostatic sensor (9) is arranged on rear distortion power load cylinder (13-2)
Cylinder barrel on and for measuring oil pressure in the cylinder barrel, the power transition arm (12) is solid with composite bimetal pipe to be tested (19)
The cylinder barrel of fixed connection, the preceding distortion power load cylinder (13-1) and rear distortion power load cylinder (13-2) is cut with scissors with base (1)
Connect；
Multiple adjustment holes (16) are provided with the base (1) along its length, multiple adjustment holes (16) are uniformly laid；
The sliding machine (18) that can be slided along its inwall is additionally provided with the composite bimetal pipe to be tested (19), it is described
Camera (17) is arranged on sliding machine (18).
2. according to a kind of composite bimetal pipe bend test device described in claim 1, it is characterised in that：The axial force adds
Mounted mechanism includes axial force load cylinder (3), support base (2), power shifter lever (7), power loading axis (8) and the first hydraulic sensing
Device (5), the piston rod outer end and the lower end of power shifter lever (7) of the axial force load cylinder (3) are hinged, first hydraulic pressure
Sensor (5) is arranged on the cylinder barrel of axial force load cylinder (3) and for measuring the oil pressure in the cylinder barrel, the power conversion
Lever (7) is hinged with support base (2), and the power loading axis (8) is rotatably installed in the upper end of power shifter lever (7) by bearing,
The power loading axis (8) is fixedly connected with composite bimetal pipe to be tested (19), the cylinder barrel of the axial force load cylinder (3) and
Support base (2) is each attached on base (1).
3. according to a kind of composite bimetal pipe bend test device described in claim 2, it is characterised in that：The power loading axis
(8) it is welding with the connected mode of composite bimetal pipe to be tested (19).
4. according to a kind of composite bimetal pipe bend test device described in claim 1, it is characterised in that：The bending force adds
Mounted mechanism includes bending force load cylinder (15), multiple tube clip (14), the second hydrostatic sensor (4) and displacement transducer
(10), second hydrostatic sensor (4) is arranged on the cylinder barrel of bending force load cylinder (15) and for measuring the cylinder barrel
Interior oil pressure, institute's displacement sensors (10) are arranged on bending force load cylinder (15) and for measuring bending force load cylinder
(15) displacement of piston rod, the multiple tube clip (14) is arranged on the piston rod outer end of bending force load cylinder (15),
The multiple tube clip (14) includes the upper clip (14-1) and lower clamping piece (14-2) that are oppositely arranged, the upper clip (14-1) and
Lower clamping piece (14-2) is fixedly connected by bolt (14-3), the lower clamping piece (14-2) and the piston of bending force load cylinder (15)
Bar outer end is hinged, the sky that the composite bimetal pipe (19) to be tested is formed through upper clip (14-1) with lower clamping piece (14-2)
Between, the cylinder barrel of the bending force load cylinder (15) is fixed on base (1).
5. according to a kind of composite bimetal pipe bend test device described in claim 4, it is characterised in that：The upper clip
The shape of cross section of (14-1) and lower clamping piece (14-2) is semicircle, the upper clip (14-1) and lower clamping piece (14-2) it is big
It is small equal.
6. according to a kind of composite bimetal pipe bend test device described in claim 1, it is characterised in that：The power transition arm
(12) it is welding with the connected mode of composite bimetal pipe to be tested (19).
7. according to a kind of composite bimetal pipe bend test device described in claim 1, it is characterised in that：The foil gauge
(11) middle part of composite bimetal pipe to be tested (19) is arranged on, the foil gauge (11) includes axial strain piece (11-1) and ring
To foil gauge (11-2), axially mounted, the ring of the axial strain piece (11-1) along composite bimetal pipe to be tested (19)
Ring to foil gauge (11-2) along composite bimetal pipe to be tested (19) is installed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510233445.9A CN104807704B (en) | 2015-05-08 | 2015-05-08 | A kind of composite bimetal pipe bend test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510233445.9A CN104807704B (en) | 2015-05-08 | 2015-05-08 | A kind of composite bimetal pipe bend test device |
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| CN104807704A CN104807704A (en) | 2015-07-29 |
| CN104807704B true CN104807704B (en) | 2017-08-08 |
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