CN204556408U - A kind of composite bimetal pipe bend test device - Google Patents

A kind of composite bimetal pipe bend test device Download PDF

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Publication number
CN204556408U
CN204556408U CN201520296518.4U CN201520296518U CN204556408U CN 204556408 U CN204556408 U CN 204556408U CN 201520296518 U CN201520296518 U CN 201520296518U CN 204556408 U CN204556408 U CN 204556408U
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China
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composite bimetal
bimetal pipe
tested
cylinder
force load
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李华军
朱加强
郭崇晓
张燕飞
郭霖
吴泽
傅海
王小艳
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XI'AN SUNWARD AEROSPACE MATERIAL CO Ltd
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XI'AN SUNWARD AEROSPACE MATERIAL CO Ltd
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Abstract

The utility model discloses a kind of composite bimetal pipe bend test device, comprise base, base is provided with bending force load maintainer, axial force load maintainer and distortion power load maintainer, composite bimetal pipe outer wall to be tested is pasted with foil gauge, camera is provided with in composite bimetal pipe to be tested, composite bimetal pipe to be tested is positioned at 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 utility model can realize loading the upper and lower bending force of composite bimetal pipe, axial force loads and distortion power loads, can single stressed bending test, also can the stressed bending test of combination in any, can monitor situation in composite bimetal pipe.

Description

A kind of composite bimetal pipe bend test device
Technical field
The utility model relates to a kind of bend test device, especially relates to a kind of composite bimetal pipe bend test device.
Background technology
In recent years, due to high pressure resistant, corrosion-resistant etc. the excellent usability of composite bimetal pipe, composite bimetal pipe was widely used in oil, chemical industry.Due to the cost performance that it is superior, composite bimetal pipe has been widely used in the oil and gas exploitation environment of land, and when pipeline laying, the corresponding pipe fitting of adapted, pipe bending is less or do not need to bend, and therefore composite bimetal pipe is better at land oil and gas industry effect.Along with marine oil gas extraction, composite bimetal pipe also starts to be applied in marine oil natural gas extraction environment, but composite bimetal pipe is applied in marine oil natural gas extraction environment, must meet certain bending property.Due to the construction environment that ocean is special, be different from land construction environment, when pipeline is laid, need to bend, and sometimes require that pipeline is in elastic bending state.And composite bimetal pipe is due to its special structure, it may occur that when bending base lining is separated, and the phenomenons such as bushing pipe is wrinkling, this will affect the usability of composite bimetal pipe.So in the urgent need to developing a kind of test unit to composite bimetal pipe degree of crook and state, can be detected the maximum flexion of composite bimetal pipe in engineer applied and state by this test unit, determine the minimum bending radius of composite bimetal pipe, can to ensure under this degree of crook the base tube of composite bimetal pipe there will not be with bushing pipe be separated, wrinkling.
Application number is 201310240542.1, name is called that the Chinese patent of " full size metal complex pipe four-point bending test device " discloses a kind of metal composite pipe test unit, and it forms primarily of base, two load support posts, tested metal composite pipe clip, two load cylinders, sensor, foil gauge, strainmeters.There is following shortcoming in this test unit: (1) can only simulate metal composite pipe bending loading upwards, namely the unidirectional bending loading of metal composite pipe can only be simulated, metal composite pipe above-below direction alternating bending CYCLIC LOADING can not be simulated, therefore, this test unit cannot draw under the effect of alternating bending CYCLIC LOADING, the bending resistance of metal composite pipe; (2) when bending, metal composite pipe two ends can not load axial force and distortion power, but under the working environment of reality, usually simultaneously with two ends axial force or distortion power when metal composite pipe bends, therefore, the test findings of this test unit cannot reflect the bending resistance of metal composite pipe really; (3) when test is carried out, this test unit can only gather the strain variation situation of complex pipe outer wall, the situation of change of monitoring complex pipe corrosion-resistant alloy layer that can not be real-time, therefore, the integrality of metal composite pipe inner lining corrosion resisting alloy layer when this test unit cannot detect bending, cannot draw the inner lining corrosion resisting alloy layer bending resistance of metal composite pipe.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, a kind of composite bimetal pipe bend test device is provided, simple, the reasonable in design and convenient operation of its structure, can realize the upper and lower bending force loading of composite bimetal pipe, axial force loads and distortion power loads, can single stressed bending test, also can the stressed bending test of combination in any, the situation of change of composite bimetal pipe inside can be monitored in real time.
For achieving the above object, the technical solution adopted in the utility model is: a kind of composite bimetal pipe bend test device, it is characterized in that: comprise base, described base is provided with the bending force load maintainer to composite bimetal pipe load bending power to be tested, the axial force load maintainer of axial force is loaded to composite bimetal pipe to be tested and composite bimetal pipe to be tested is loaded to the distortion power load maintainer of distortion power, the outer wall of described composite bimetal pipe to be tested is pasted with the foil gauge for detecting composite bimetal pipe dependent variable to be tested, be provided with for taking the diastrophic camera of composite bimetal pipe to be tested in described composite bimetal pipe to be tested, described composite bimetal pipe to be tested is positioned at the top of base, described distortion power load maintainer is arranged on the middle part of composite bimetal pipe to be tested, the quantity of described bending force load maintainer and axial force load maintainer is two, two described axial force load maintainers are symmetricly set on the two ends of composite bimetal pipe to be tested, two described bending force load maintainers are symmetricly set on the left and right sides of described distortion power load maintainer, described bending force load maintainer is arranged between two described axial force load maintainers.
Above-mentioned a kind of composite bimetal pipe bend test device, it is characterized in that: described axial force load maintainer comprises axial force load cylinder, supporting seat, power shifter lever, power loads axle and the first hydraulic pressure transducer, the piston rod outer end of described axial force load cylinder and the lower end of power shifter lever hinged, on the cylinder barrel that described first hydraulic pressure transducer is arranged on axial force load cylinder and for measuring the oil pressure in described cylinder barrel, described power shifter lever and supporting seat hinged, described power loads axle is rotatably installed in power shifter lever upper end by bearing, described power loads axle and is fixedly connected with composite bimetal pipe to be tested, cylinder barrel and the supporting seat of described axial force load cylinder are all fixed on base.
Above-mentioned a kind of composite bimetal pipe bend test device, is characterized in that: described power loads the connected mode of axle and composite bimetal pipe to be tested for welding.
Above-mentioned a kind of composite bimetal pipe bend test device, it is characterized in that: described bending force load maintainer comprises bending force load cylinder, complex pipe clip, second hydraulic pressure transducer and displacement transducer, on the cylinder barrel that described second hydraulic pressure transducer is arranged on bending force load cylinder and for measuring the oil pressure in described cylinder barrel, institute's displacement sensors to be arranged on bending force load cylinder and for the displacement of the piston rod of measuring bending force load cylinder, described complex pipe clip is arranged on the piston rod outer end of bending force load cylinder, described complex pipe clip comprises the upper clip and lower clamping piece that are oppositely arranged, described upper clip and lower clamping piece are bolted to connection, the piston rod outer end of described lower clamping piece and bending force load cylinder is hinged, the space that described composite bimetal pipe to be tested is formed through upper clip and lower clamping piece, the cylinder barrel of described bending force load cylinder is fixed on base.
Above-mentioned a kind of composite bimetal pipe bend test device, is characterized in that: the shape of cross section of described upper clip and lower clamping piece is semicircle, the equal and opposite in direction of described upper clip and lower clamping piece.
Above-mentioned a kind of composite bimetal pipe bend test device, it is characterized in that: described distortion power load maintainer comprises front distortion power load cylinder, rear distortion power load cylinder, power transition arm, 3rd hydraulic pressure transducer and the 4th hydraulic pressure transducer, the front end of described power transition arm and the piston rod end of front distortion power load cylinder hinged, the rear end of described power transition arm and the piston rod end of rear distortion power load cylinder hinged, on the cylinder barrel that described 3rd hydraulic pressure transducer is arranged on front distortion power load cylinder and for measuring the oil pressure in described cylinder barrel, on the cylinder barrel that described 4th hydraulic pressure transducer is arranged on rear distortion power load cylinder and for measuring the oil pressure in described cylinder barrel, described power transition arm is fixedly connected with composite bimetal pipe to be tested, the cylinder barrel of described front distortion power load cylinder and rear distortion power load cylinder is all hinged with base.
Above-mentioned a kind of composite bimetal pipe bend test device, is characterized in that: the connected mode of described power transition arm and composite bimetal pipe to be tested is for welding.
Above-mentioned a kind of composite bimetal pipe bend test device, it is characterized in that: described foil gauge is arranged on the middle part of composite bimetal pipe to be tested, described foil gauge comprises axial strain sheet and hoop strain sheet, described axial strain sheet is installed along the axis of composite bimetal pipe to be tested, and described hoop strain sheet is installed along the hoop of composite bimetal pipe to be tested.
Above-mentioned a kind of composite bimetal pipe bend test device, it is characterized in that: described base has multiple adjustment hole along its length, multiple adjustment hole is evenly laid.
Above-mentioned a kind of composite bimetal pipe bend test device, is characterized in that: be also provided with the sliding machine that can slide along its inwall in described composite bimetal pipe to be tested, described camera is arranged on sliding machine.
The utility model compared with prior art has the following advantages:
1, simple, the reasonable in design and convenient operation of the utility model structure.
2, the utility model is realized composite bimetal pipe upper and lower iterative cycles load bending power by bending force load maintainer, is realized loading axial force to composite bimetal pipe and realizing loading distortion power to composite bimetal pipe by distortion power load maintainer by axial force load maintainer, and bending force load maintainer, axial force load maintainer and distortion power load maintainer can be used alone, also combination in any can use, carry out the stressed bending test of composite bimetal pipe.
3, the utility model is by being arranged on the camera in composite bimetal pipe to be tested, the flexural deformation situation of captured in real-time composite bimetal pipe inside to be tested, with the situation of change of real-time monitoring complex pipe corrosion-resistant alloy layer in carrying out in test.
4, the utility model by having multiple adjustment hole along its length on base, and multiple adjustment hole is evenly laid, the distance between two axial force load maintainers is regulated like this by adjustment hole, and the distance between adjustment two bending force load maintainers, to realize the bending test of the composite bimetal pipe to be tested to various length.
5, the utility model usable range is wide, not only can with being effectively applicable in the bending test of composite bimetal pipe, also can be used in the bending test to other tubing or section bar.
Below by drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is using state figure of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the A place enlarged drawing of Fig. 2.
Fig. 4 is the installation relation schematic diagram of the utility model axial force load maintainer and composite bimetal pipe to be tested.
Fig. 5 is the using state figure of the utility model axial force load maintainer.
Fig. 6 is the installation relation schematic diagram of the utility model bending force load maintainer and composite bimetal pipe to be tested.
Fig. 7 is the installation relation schematic diagram of the utility model distortion power load maintainer and composite bimetal pipe to be tested.
Fig. 8 is the using state figure of the utility model distortion power load maintainer.
Fig. 9 is the constitutional diagram that the utility model is bent upwards composite bimetal pipe to be tested.
Figure 10 is the constitutional diagram that the utility model is bent downwardly composite bimetal pipe to be tested.
Description of reference numerals:
1-base; 2-supporting seat; 3-axial force load cylinder;
4-the second hydraulic pressure transducer; 5-the first hydraulic pressure transducer; 6-the three hydraulic pressure transducer;
7-power shifter lever; 8-power loads axle; 9-the four hydraulic pressure transducer;
10-displacement transducer; 11-foil gauge; 11-1-axial strain sheet;
11-2-hoop strain sheet; 12-power transition arm; 13-1-front distortion power load cylinder;
13-2-rear distortion power load cylinder; 14-complex pipe 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 utility model comprises base 1, described base 1 is provided with the bending force load maintainer to composite bimetal pipe 19 load bending power to be tested, the axial force load maintainer of axial force is loaded to composite bimetal pipe 19 to be tested and composite bimetal pipe 19 to be tested is loaded to the distortion power load maintainer of distortion power, the outer wall of described composite bimetal pipe to be tested 19 is pasted with the foil gauge 11 for detecting composite bimetal pipe 19 dependent variable to be tested, be provided with for taking the diastrophic camera 17 of composite bimetal pipe 19 to be tested in described composite bimetal pipe to be tested 19, described composite bimetal pipe to be tested 19 is positioned at the top of base 1, described distortion power load maintainer is arranged on the middle part of composite bimetal pipe 19 to be tested, the quantity of described bending force load maintainer and axial force load maintainer is two, two described axial force load maintainers are symmetricly set on the two ends of composite bimetal pipe 19 to be tested, two described bending force load maintainers are symmetricly set on the left and right sides of described distortion power load maintainer, described bending force load maintainer is arranged between two described axial force load maintainers.
As shown in Figure 4 and Figure 5, described axial force load maintainer comprises axial force load cylinder 3, supporting seat 2, power shifter lever 7, power loads axle 8 and the first hydraulic pressure transducer 5, the piston rod outer end of described axial force load cylinder 3 and the lower end of power shifter lever 7 hinged, on the cylinder barrel that described first hydraulic pressure transducer 5 is arranged on axial force load cylinder 3 and for measuring the oil pressure in described cylinder barrel, described power shifter lever 7 is hinged with supporting seat 2, described power loads axle 8 is rotatably installed in power shifter lever 7 upper end by bearing, described power loads axle 8 and is fixedly connected with composite bimetal pipe 19 to be tested, cylinder barrel and the supporting seat 2 of described axial force load cylinder 3 are all fixed on base 1.In the present embodiment, described power loads the connected mode of axle 8 and composite bimetal pipe 19 to be tested for welding.During work, axial force load cylinder 3 loads axle 8 by power shifter lever 7 and power, loads axial force to composite bimetal pipe 19 to be tested.
As indicated with 6, described bending force load maintainer comprises bending force load cylinder 15, complex pipe clip 14, second hydraulic pressure transducer 4 and displacement transducer 10, on the cylinder barrel that described second hydraulic pressure transducer 4 is arranged on bending force load cylinder 15 and for measuring the oil pressure in described cylinder barrel, institute's displacement sensors 10 to be arranged on bending force load cylinder 15 and for the displacement of the piston rod of measuring bending force load cylinder 15, described complex pipe clip 14 is arranged on the piston rod outer end of bending force load cylinder 15, described complex pipe clip 14 comprises the upper clip 14-1 and lower clamping piece 14-2 that are oppositely arranged, described upper clip 14-1 is fixedly connected with by bolt 14-3 with lower clamping piece 14-2, the piston rod outer end of described lower clamping piece 14-2 and bending force load cylinder 15 is hinged, the space that described composite bimetal pipe to be tested 19 is formed through upper clip 14-1 and lower clamping piece 14-2, the cylinder barrel of described bending force load cylinder 15 is fixed on base 1.In the present embodiment, the shape of cross section of described upper clip 14-1 and lower clamping piece 14-2 is semicircle, the equal and opposite in direction of described upper clip 14-1 and lower clamping piece 14-2.The model that displacement transducer 10 adopts Jinan scientific & technical corporation of Case to produce is the stay wire displacement sensor of KS30 series.Complex pipe clip 14 forms primarily of upper clip 14-1 and lower clamping piece 14-2, by bolt 14-3, composite bimetal pipe 19 dress to be tested is clipped in the middle, the piston rod outer end of lower clamping piece 14-2 and bending force load cylinder 15 is hinged, and this sampling composite tube clip 14 can swing.During work, bending force load cylinder 15 moves up and down, and drives composite bimetal pipe about 19 to be tested alternating bending by complex pipe clip 14.
As shown in Figure 7 and Figure 8, described distortion power load maintainer comprises front distortion power load cylinder 13-1, rear distortion power load cylinder 13-2, power transition arm 12, 3rd hydraulic pressure transducer 6 and the 4th hydraulic pressure transducer 9, the front end of described power transition arm 12 and the piston rod end of front distortion power load cylinder 13-1 hinged, the rear end of described power transition arm 12 and the piston rod end of rear distortion power load cylinder 13-2 hinged, on the cylinder barrel that described 3rd hydraulic pressure transducer 6 is arranged on front distortion power load cylinder 13-1 and for measuring the oil pressure in described cylinder barrel, on the cylinder barrel that described 4th hydraulic pressure transducer 9 is arranged on rear distortion power load cylinder 13-2 and for measuring the oil pressure in described cylinder barrel, described power transition arm 12 is fixedly connected with composite bimetal pipe 19 to be tested, the cylinder barrel of described front distortion power load cylinder 13-1 and rear distortion power load cylinder 13-2 is all hinged with base 1.In the present embodiment, the connected mode of described power transition arm 12 and composite bimetal pipe 19 to be tested is for welding.During work, front distortion power load cylinder 13-1 and rear distortion power load cylinder 13-2, by power transition arm 12, loads distortion power to composite bimetal pipe 19 to be tested.
As shown in Figure 3, described foil gauge 11 is arranged on the middle part of composite bimetal pipe 19 to be tested, described foil gauge 11 comprises axial strain sheet 11-1 and hoop strain sheet 11-2, described axial strain sheet 11-1 installs along the axis of composite bimetal pipe 19 to be tested, and described hoop strain sheet 11-2 installs along the hoop of composite bimetal pipe 19 to be tested.In the present embodiment, the quantity of foil gauge 11 is six groups, and six groups of foil gauges 11 are spaced apart.
As shown in Figure 2, described base 1 has multiple adjustment hole 16 along its length, multiple adjustment hole 16 is evenly laid, the distance between two axial force load maintainers can be regulated by adjustment hole 16, and the distance between adjustment two bending force load maintainers, to realize the bending test of the composite bimetal pipe to be tested 19 to various length.
As shown in Figure 1, be also provided with the sliding machine 18 that can slide along its inwall in described composite bimetal pipe 19 to be tested, described camera 17 is arranged on sliding machine 18.
Principle of work of the present utility model is: carry out load test according to testing the front load deflection step arranged, and during each bending loading, according to testing requirements, can all load certain axial force in advance to the two ends of composite bimetal pipe 19 to be tested.Axial force load cylinder 3 is by piston masthead or draw in row loading force, and by power shifter lever 7, acting force is loaded on the axis of composite bimetal pipe 19 to be tested, the first hydraulic pressure transducer 5 that the cylinder body of composite bimetal pipe 19 to be tested is installed can detect the pressure in cylinder barrel, by carrying out being multiplied the loading acting force calculating and can obtain axial force load cylinder 3 with the load-carrying area of cylinder barrel, loading acting force and being multiplied by the axis loading acting force that power shifter lever 7 just can obtain composite bimetal pipe 19 to be tested.Also can experimentally requirement, can certain distortion power be loaded in advance composite bimetal pipe 19 to be tested, front distortion power load cylinder 13-1 and rear distortion power load cylinder 13-2 is by piston masthead or draw in row loading force, and by power transition arm 12, moment of torsion is loaded on composite bimetal pipe 19 to be tested, the 3rd hydraulic pressure transducer 6 that the cylinder barrel of front distortion power load cylinder 13-1 is installed can detect the pressure in cylinder barrel, the 4th hydraulic pressure transducer 9 that the cylinder barrel of distortion power load cylinder 13-2 is installed can detect the pressure in cylinder barrel, by carrying out being multiplied the loading acting force calculating and can obtain front distortion power load cylinder 13-1 and rear distortion power load cylinder 13-2 with the load-carrying area of cylinder barrel, front distortion power load cylinder 13-1 and rear distortion power load cylinder 13-2 is multiplied by the distortion loading acting force that corresponding power transition arm just can obtain composite bimetal pipe 19 to be tested respectively.During each loading, the piston rod of bending force load cylinder 15 is by moving up or down, thus drive composite bimetal pipe 19 to be tested to be bent upwards or to be bent downwardly (as shown in Figure 9 and Figure 10), the second hydraulic pressure transducer 4 that the cylinder barrel of bending force load cylinder 15 is installed can detect the pressure in cylinder barrel, can obtain bending force load cylinder 15 loading acting force up or down by carrying out being multiplied calculating with the load-carrying area of cylinder barrel.Meanwhile, this test unit can detect the dependent variable of composite bimetal pipe 19 to be tested by foil gauge 11, observes strain variation situation when composite bimetal pipe 19 to be tested bends on the one hand, utilizes complex pipe deformation formula R=D/2 ε on the other hand in flat axlecalculate the minimum bending radius R of composite bimetal pipe, the unit of R is mm; Wherein, D is the nominal outside diameter of composite bimetal pipe, and the unit of D is mm, ε in flat axlethe axial mean strain amount of central point for composite bimetal pipe.In addition, this test unit can take the flexural deformation of composite bimetal pipe 19 inside to be tested by camera 17, namely when the multiple composite bimetal pipe 19 to be tested of observation bends, whether inner lining corrosion resisting alloy layer is wrinkling lost efficacy with bulge, often walking under load deflection, by radius of curvature and the situation of change observing inside surface, just can obtain in the complete situation of guarantee composite bimetal pipe, the maximum flexion of composite bimetal pipe and minimum bending radius, and then the bending property evaluating composite bimetal pipe.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure transformation, all still belong in the protection domain of technical solutions of the utility model.

Claims (10)

1. a composite bimetal pipe bend test device, it is characterized in that: comprise base (1), described base (1) is provided with the bending force load maintainer to composite bimetal pipe to be tested (19) load bending power, the axial force load maintainer of axial force is loaded to composite bimetal pipe to be tested (19) and composite bimetal pipe to be tested (19) is loaded to the distortion power load maintainer of distortion power, the outer wall of described composite bimetal pipe to be tested (19) is pasted with the foil gauge (11) for detecting composite bimetal pipe to be tested (19) dependent variable, be provided with in described composite bimetal pipe to be tested (19) for taking composite bimetal pipe to be tested (19) diastrophic camera (17), described composite bimetal pipe to be tested (19) is positioned at the top of base (1), described distortion power load maintainer is arranged on the middle part of composite bimetal pipe to be tested (19), the quantity of described bending force load maintainer and axial force load maintainer is two, two described axial force load maintainers are symmetricly set on the two ends of composite bimetal pipe to be tested (19), two described bending force load maintainers are symmetricly set on the left and right sides of described distortion power load maintainer, described bending force load maintainer is arranged between two described axial force load maintainers.
2. according to a kind of composite bimetal pipe bend test device according to claim 1, it is characterized in that: described axial force load maintainer comprises axial force load cylinder (3), supporting seat (2), power shifter lever (7), power loads axle (8) and the first hydraulic pressure transducer (5), the piston rod outer end of described axial force load cylinder (3) and the lower end of power shifter lever (7) hinged, on the cylinder barrel that described first hydraulic pressure transducer (5) is arranged on axial force load cylinder (3) and for measuring the oil pressure in described cylinder barrel, described power shifter lever (7) is hinged with supporting seat (2), described power loads axle (8) is rotatably installed in power shifter lever (7) upper end by bearing, described power loads axle (8) and is fixedly connected with composite bimetal pipe to be tested (19), cylinder barrel and the supporting seat (2) of described axial force load cylinder (3) are all fixed on base (1).
3. according to a kind of composite bimetal pipe bend test device according to claim 2, it is characterized in that: described power loads the connected mode of axle (8) and composite bimetal pipe to be tested (19) for welding.
4. according to a kind of composite bimetal pipe bend test device according to claim 1, it is characterized in that: described bending force load maintainer comprises bending force load cylinder (15), complex pipe clip (14), second hydraulic pressure transducer (4) and displacement transducer (10), on the cylinder barrel that described second hydraulic pressure transducer (4) is arranged on bending force load cylinder (15) and for measuring the oil pressure in described cylinder barrel, it is upper and for the displacement of the piston rod of measuring bending force load cylinder (15) that institute's displacement sensors (10) is arranged on bending force load cylinder (15), described complex pipe clip (14) is arranged on the piston rod outer end of bending force load cylinder (15), described complex pipe clip (14) comprises the upper clip (14-1) and lower clamping piece (14-2) that are oppositely arranged, described upper clip (14-1) is fixedly connected with by bolt (14-3) with lower clamping piece (14-2), described lower clamping piece (14-2) is hinged with the piston rod outer end of bending force load cylinder (15), the space that described composite bimetal pipe to be tested (19) is formed through upper clip (14-1) and lower clamping piece (14-2), the cylinder barrel of described bending force load cylinder (15) is fixed on base (1).
5. according to a kind of composite bimetal pipe bend test device according to claim 4, it is characterized in that: the shape of cross section of described upper clip (14-1) and lower clamping piece (14-2) is semicircle, the equal and opposite in direction of described upper clip (14-1) and lower clamping piece (14-2).
6. according to a kind of composite bimetal pipe bend test device according to claim 1, it is characterized in that: described distortion power load maintainer comprises front distortion power load cylinder (13-1), rear distortion power load cylinder (13-2), power transition arm (12), 3rd hydraulic pressure transducer (6) and the 4th hydraulic pressure transducer (9), the front end of described power transition arm (12) and the piston rod end of front distortion power load cylinder (13-1) hinged, the rear end of described power transition arm (12) and the piston rod end of rear distortion power load cylinder (13-2) hinged, on the cylinder barrel that described 3rd hydraulic pressure transducer (6) is arranged on front distortion power load cylinder (13-1) and for measuring the oil pressure in described cylinder barrel, on the cylinder barrel that described 4th hydraulic pressure transducer (9) is arranged on rear distortion power load cylinder (13-2) and for measuring the oil pressure in described cylinder barrel, described power transition arm (12) is fixedly connected with composite bimetal pipe to be tested (19), the cylinder barrel of described front distortion power load cylinder (13-1) and rear distortion power load cylinder (13-2) is all hinged with base (1).
7. according to a kind of composite bimetal pipe bend test device according to claim 6, it is characterized in that: the connected mode of described power transition arm (12) and composite bimetal pipe to be tested (19) is for welding.
8. according to a kind of composite bimetal pipe bend test device according to claim 1, it is characterized in that: described foil gauge (11) is arranged on the middle part of composite bimetal pipe to be tested (19), described foil gauge (11) comprises axial strain sheet (11-1) and hoop strain sheet (11-2), described axial strain sheet (11-1) is installed along the axis of composite bimetal pipe to be tested (19), and described hoop strain sheet (11-2) is installed along the hoop of composite bimetal pipe to be tested (19).
9. according to a kind of composite bimetal pipe bend test device according to claim 1, it is characterized in that: described base (1) has along its length multiple adjustment hole (16), multiple adjustment hole (16) is evenly laid.
10. according to a kind of composite bimetal pipe bend test device according to claim 1, it is characterized in that: be also provided with the sliding machine (18) that can slide along its inwall in described composite bimetal pipe to be tested (19), described camera (17) is arranged on sliding machine (18).
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104807704A (en) * 2015-05-08 2015-07-29 西安向阳航天材料股份有限公司 Bi-metal composite pipe bending test device
CN105510022A (en) * 2016-01-27 2016-04-20 江苏电力装备有限公司 Dynamic-load pipe clamp tension and compression testing device and method
CN105547876A (en) * 2015-12-29 2016-05-04 东南大学 Experimental device for bending corrosion fatigue of materials
CN108844813A (en) * 2018-08-17 2018-11-20 南京航空航天大学 A kind of fixture for fatigue tester
CN109142087A (en) * 2018-07-02 2019-01-04 上海交通大学 Texture evolution home position observation experimental provision, system and application method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104807704A (en) * 2015-05-08 2015-07-29 西安向阳航天材料股份有限公司 Bi-metal composite pipe bending test device
CN104807704B (en) * 2015-05-08 2017-08-08 西安向阳航天材料股份有限公司 A kind of composite bimetal pipe bend test device
CN105547876A (en) * 2015-12-29 2016-05-04 东南大学 Experimental device for bending corrosion fatigue of materials
CN105510022A (en) * 2016-01-27 2016-04-20 江苏电力装备有限公司 Dynamic-load pipe clamp tension and compression testing device and method
CN105510022B (en) * 2016-01-27 2018-03-16 江苏电力装备有限公司 The tension and compression method of testing of dynamic load pipe clamp tension/compression testing device and dynamic load pipe clamp
CN109142087A (en) * 2018-07-02 2019-01-04 上海交通大学 Texture evolution home position observation experimental provision, system and application method
CN108844813A (en) * 2018-08-17 2018-11-20 南京航空航天大学 A kind of fixture for fatigue tester
CN108844813B (en) * 2018-08-17 2020-07-31 南京航空航天大学 Clamp for fatigue testing machine

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