CN112798432A - Thin-wall pipe full-pipe test tool clamp and high-temperature creep endurance test equipment - Google Patents
Thin-wall pipe full-pipe test tool clamp and high-temperature creep endurance test equipment Download PDFInfo
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- CN112798432A CN112798432A CN202011606133.5A CN202011606133A CN112798432A CN 112798432 A CN112798432 A CN 112798432A CN 202011606133 A CN202011606133 A CN 202011606133A CN 112798432 A CN112798432 A CN 112798432A
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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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
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
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- G01N2203/0226—High temperature; Heating means
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Abstract
The invention discloses a thin-wall pipe full-pipe test tool clamp and high-temperature creep endurance test equipment, wherein the thin-wall pipe full-pipe test tool clamp comprises a clamp body, wherein the clamp body comprises two pipe hoops, two expansion blocks and a middle shaft; the high-temperature creep endurance test equipment comprises a rack, a loading system fixedly connected with the lower part of the rack, a control system positioned on the side surface of the rack and a clamp body. According to the invention, by arranging the clamp body, two ends of the pipe can be connected into the testing machine on the basis of not damaging the whole thin-walled pipe, and the experimental force can be completely and uniformly applied to the whole pipe sample, so that the effectiveness of the experimental result is greatly increased, the clamp body is simple in structure and convenient to manufacture and use, the central shaft and the expansion block are in a taper fit structure, so that the sufficient tensioning force can be ensured, the pipe cannot be loosened in the use process, and the pipe can be clamped by matching with the pipe hoop.
Description
Technical Field
The invention relates to the technical field of high-temperature creep equipment. In particular to a thin-wall pipe full-pipe test tool clamp and high-temperature creep endurance test equipment.
Background
Under the high-temperature condition, the creep deformation has very obvious influence on a component, in a high-temperature creep deformation experiment, a thin-walled tube generally needs to be planed and made into a semi-tubular shape, two ends of the thin-walled tube are punched and inserted into a testing machine after pins are inserted, the integrity of the thin-walled tube is damaged, and meanwhile, the stress mode of the tube is changed, so that the effectiveness of the experiment is greatly reduced; the required time of high temperature creep experiment is longer, and traditional testing machine can only test a sample once, leads to efficiency lower, and traditional high temperature creep testing machine's firing equipment change inconvenient, leads to can not be quick when the heating goes wrong to change heating element, and then influences the accuracy of experimental data.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide a thin-wall pipe full-pipe test tool clamp and high-temperature creep endurance test equipment which can clamp thin-wall pipes and can test multiple types of thin-wall pipes at one time.
In order to solve the technical problems, the invention provides the following technical scheme: the fixture body comprises two pipe hoops, two expansion blocks and a center shaft, through holes are formed in the side walls of the two pipe hoops, bolts penetrate through the through holes, the two pipe hoops are fixedly connected through the bolts, the two expansion blocks are arranged in a cylinder formed by the two pipe hoops, the center shaft penetrates between the two expansion blocks, and external threads are arranged on the side wall of the upper portion of the center shaft.
According to the thin-wall pipe full-pipe test tool clamp, the inner side wall of the expansion block is a conical surface, the lower part of the center shaft is conical, and the conical side surface of the center shaft is in lap joint with the conical inner wall surface of the expansion block.
According to the thin-wall pipe full-pipe test tool clamp, the workpiece penetrates through the pipe hoop, the outer side wall of the workpiece is in lap joint with the inner side wall of the pipe hoop, and the outer side walls of the two expansion blocks are in lap joint with the inner side wall of the workpiece.
The high-temperature creep endurance test equipment comprises a rack, a loading system fixedly connected with the lower part of the rack and a control system positioned on the side surface of the rack, wherein the upper part of the loading system is fixedly connected with a series assembly, the middle part of the series assembly is provided with a workpiece, two ends of the workpiece are both fixedly connected with a clamp body, two ends of the workpiece are respectively and fixedly connected with two ends of the series assembly through the clamp body, the outer side of the workpiece is sleeved with a heating assembly, and the heating assembly and the loading system are both electrically connected with the control system through leads; the clamp body comprises two pipe hoops, two expansion blocks and a center shaft, through holes are formed in the side walls of the two pipe hoops, bolts penetrate through the through holes, the two pipe hoops are fixedly connected through the bolts, the two expansion blocks are arranged in a cylinder formed by the two pipe hoops, the center shaft penetrates between the two expansion blocks, and external threads are arranged on the side wall of the upper portion of the center shaft.
The series connection assembly comprises an upper series connection frame and a lower series connection frame, the upper series connection frame and the lower series connection frame are identical in structure, the upper series connection frame comprises two parallelogram frames which are sequentially hinged end to end through four connecting rods, connecting shafts are hinged to the upper hinge point and the lower hinge point of the opposite surfaces of the two parallelogram frames, hinge shafts are hinged to the left hinge point and the right hinge point of the opposite surfaces of the two parallelogram frames, two ends of one hinge shaft are hinged to buffer rods, two ends of the other hinge shaft are hinged to the other end of each buffer rod respectively, and the two buffer rods are parallel to each other; the top and the bottom of the connecting shaft are respectively and fixedly connected with an upper screw and a lower screw through a support, the surface of the lower screw of the connecting shaft at the lower part of the upper series frame and the surface of the upper screw of the connecting shaft at the upper part of the lower series frame are in threaded connection with a threaded sleeve, the upper screw of the connecting shaft at the upper part of the upper series frame is fixedly connected with the upper part of the rack, and the lower screw of the connecting shaft at the lower part of the lower series frame is fixedly connected with the upper part of the loading system;
the surface of the lower screw rod of the connecting shaft at the upper part of the upper series frame and the surface of the upper screw rod of the connecting shaft at the lower part of the upper series frame and the surface of the lower screw rod of the connecting shaft at the upper part of the lower series frame and the surface of the upper screw rod of the connecting shaft at the lower part of the lower series frame are both in threaded connection with a connecting sleeve, and both ends of the connecting sleeve are; the upper end of the middle shaft is in threaded connection with a threaded hole at one end of the connecting sleeve.
The buffer rod comprises a cylinder barrel, a piston and a piston rod, the piston is movably inserted in the cylinder barrel, one end of the piston rod is fixedly connected with the outer end of the piston, a cylinder barrel cover is arranged at the second end of the cylinder barrel, a sealing ring is arranged between the cylinder barrel cover and the piston rod, the top of the first end of the cylinder barrel is communicated with a runner pipe, the other end of the runner pipe is communicated with a collecting box, a buffer joint is arranged in the middle of the runner pipe, the first end of the cylinder barrel is hinged with one end of one hinge shaft through a hinge lug, the second end of the piston rod is hinged with one end of the other hinge shaft through the hinge lug, and hydraulic oil is filled
The side surface of the inner wall of the buffer joint is hinged with a plurality of baffle plates, the side surface of each baffle plate is provided with a reset elastic sheet, the other end of each reset elastic sheet is fixedly connected with the side surface of the inner wall of the buffer joint, the bottom of each baffle plate is lapped with a limiting block, and the other end of each limiting block is fixedly connected with the inner side wall of the buffer joint; the baffle is tilted to one side, and the tilting direction of the baffle is opposite to the flow direction of liquid in the buffer section.
The heating assembly comprises a barrel body, the top and the bottom of the barrel body are respectively fixedly connected with an upper cover and a lower cover, the bottom of the lower cover is provided with a supporting barrel along the circumferential direction, two sides of the inner wall of the supporting barrel are respectively provided with a clamping groove, the bottom of the clamping groove is provided with a blind hole, a spring is arranged in the blind hole, the other end of the spring is lapped with a conductive block, a supporting rod is penetrated in the supporting barrel, two sides of the supporting rod are respectively and fixedly connected with a contact piece, the top of the supporting rod is provided with a heating rod, the top of the heating rod penetrates out of the top of the supporting barrel, the power input end of the heating rod is electrically connected with the two contact pieces, the side surfaces of the contact pieces are lapped with the side surfaces of the conductive block, the side wall of the supporting barrel is provided with external threads, the, the bottom of the fixed cover is fixedly connected with a handle; the heating device comprises a frame, a heating rod, a cylinder, a support and a lower cover, wherein the upper cover is arranged on the frame, the lower cover is arranged on the frame, the cylinder is sleeved on the surface of a workpiece, the top of the cylinder is fixedly connected with the upper part of the frame through the support, and the heating rod is electrically connected with a control system.
The technical scheme of the invention achieves the following beneficial technical effects:
1. according to the invention, by arranging the clamp body, two ends of the pipe can be connected into the testing machine on the basis of not damaging the whole thin-walled pipe, and the experimental force can be completely and uniformly applied to the whole pipe sample, so that the effectiveness of the experimental result is greatly increased, the clamp body is simple in structure and convenient to manufacture and use, the central shaft and the expansion block are in a taper fit structure, so that the sufficient tensioning force can be ensured, the pipe cannot be loosened in the use process, and the pipe can be clamped by matching with the pipe hoop.
2. According to the invention, by arranging the series connection component, a plurality of samples can be connected in series and connected into the testing machine, the plurality of samples can be tested at one time, the efficiency of the test is improved, and the test equipment is saved, so that the investment of the test equipment is saved, and by arranging the buffer rod and the buffer joint, after one sample is fractured, the buffer rod can be slowly contracted under the action of the buffer joint, a certain buffer effect is achieved, the stability of the load is kept, the phenomenon that the loading system suddenly loses resistance to cause the damage of the loading system after one sample is fractured is avoided, the phenomenon that the other sample loses the load to cause the instability of the test data is avoided, and the phenomenon that the sample is impacted by the re-loading after the load is lost can be avoided.
3. According to the invention, the heating assembly is arranged, the heating rods of the heating assembly can be independently and quickly replaced, when one heating rod breaks down, the heating rod can be pulled out and quickly replaced, and the circuit of the heating rod can be quickly connected with the power supply circuit through the conductive block and the contact piece, so that the heating rod of the heating assembly can be replaced on line without being replaced in a shutdown manner, the temperature change is reduced, and the stability of experimental data is improved.
Drawings
FIG. 1 is a schematic side sectional view of a clamp body according to the present invention;
FIG. 2 is a schematic top view of the clamp body of the present invention;
FIG. 3 is a schematic front view of the high temperature creep rupture test apparatus of the present invention;
FIG. 4 is a schematic perspective view of a tandem module of the present invention;
FIG. 5 is a schematic diagram of a cross-sectional front view of a tandem module according to the present invention;
FIG. 6 is a front view schematically illustrating the structure of the connecting shaft according to the present invention;
FIG. 7 is a schematic front sectional view of a buffer rod according to the present invention;
FIG. 8 is a schematic cross-sectional view of a buffer segment according to the present invention;
FIG. 9 is a schematic cross-sectional view of a heating element according to the present invention;
FIG. 10 is an enlarged schematic view taken at A of FIG. 9 of the present invention.
The reference numbers in the figures denote: 1-a frame; 2-a loading system; 3-a control system; 4-a series module; 401-upper serial frame; 402-lower series rack; 403-a connecting shaft; 404-a hinge axis; 405-a buffer rod; 406-a threaded sleeve; 407-connecting sleeve; 408-a cylinder barrel; 409-a piston rod; 410-a flow-through tube; 411-buffer section; 412-a collection tank; 413-a baffle; 414-reset spring plate; 415-a stopper; 416-a piston; 417-upper screw; 418-lower screw; 5-a heating assembly; 501-cylinder body; 502-upper cover; 503-lower cover; 504-heating rod; 505-a support cylinder; 506-a support bar; 507-fixing a cover; 508-a spring; 509-a conductive block; 510-a contact pad; 511-a handle; 6-a clamp body; 601-a pipe clamp; 602-an expansion block; 603-medial axis; 7-workpiece.
Detailed Description
Referring to fig. 1-2, a thin-walled tube full-tube test tooling fixture comprises a fixture body 6, wherein the fixture body 6 comprises two tube hoops 601, two expansion blocks 602 and a central shaft 603, the two tube hoops 601 are fixedly connected through bolts, the two expansion blocks 602 are arranged in a cylinder formed by the two tube hoops 601, through arranging the fixture body 6, two ends of a tube can be connected into a testing machine on the basis of not damaging the whole thin-walled tube, and an experimental force can be completely and uniformly applied to the whole tube sample, so that the effectiveness of an experimental result is greatly increased, the fixture body 6 has a simple structure and is convenient to manufacture and use, the central shaft 603 is arranged between the two expansion blocks 602 in a penetrating manner, the inner side wall of each expansion block 602 is a conical surface, the lower part of the central shaft 603 is conical, and the conical side surface of the central shaft 603 is overlapped with the conical inner wall surface of each expansion block 602, the axis 603 and the expansion block 602 are in a taper fit structure, so that sufficient tension force can be ensured, the pipe cannot loosen in the use process, the pipe can be clamped by the fit pipe clamp 601, the workpiece 7 is arranged in the pipe clamp 601 in a penetrating manner, the outer side wall of the workpiece 7 is lapped with the inner side wall of the pipe clamp 601, the outer side wall of the expansion block 602 is lapped with the inner side wall of the workpiece 7, and the outer side wall of the upper portion of the axis 603 is provided with an external thread.
As shown in fig. 3, the high-temperature creep endurance test apparatus comprises a rack 1, a loading system 2 fixedly connected with the lower portion of the rack 1, and a control system 3 located on the side surface of the rack 1, wherein the upper portion of the loading system 2 is fixedly connected with a series assembly 4, a workpiece 7 is arranged in the middle of the series assembly 4, two ends of the workpiece 7 are both fixedly connected with a clamp body 6, two ends of the workpiece 7 are respectively fixedly connected with two ends of the series assembly 4 through the clamp body 6, a heating assembly 5 is sleeved outside the workpiece 7, as shown in fig. 9-10, the heating assembly 5 comprises a cylinder body 501, the top and the bottom of the cylinder body 501 are respectively and fixedly connected with an upper cover 502 and a lower cover 503, a supporting cylinder 505 is arranged at the bottom of the lower cover 503 along the circumferential direction, clamping grooves are formed in two sides of the inner wall of the supporting cylinder 505, and blind, a spring 508 is arranged in the blind hole, a conductive block 509 is lapped on the other end of the spring 508, a support rod 506 penetrates through the support cylinder 505, contact pieces 510 are fixedly connected to two sides of the support rod 506, a heating rod 504 is arranged at the top of the support rod 506, the top of the heating rod 504 penetrates out of the top of the support cylinder 505, an electric power input end of the heating rod 504 is electrically connected with the two contact pieces 510, the side surfaces of the contact pieces 510 are lapped with the side surfaces of the conductive block 509, the side wall of the support cylinder 505 is provided with external threads, the bottom of the support cylinder 505 is in threaded connection with a fixing cover 507, the top of the inner wall of the fixing cover 507 is lapped with the bottom end of the support rod 506, a handle 511 is fixedly connected to the bottom of the fixing cover 507, a heating assembly 5 is arranged, the heating rod 504 of the heating assembly 5 can be independently and rapidly, the heating rod 504 can be replaced on line by drawing out the heating rod and quickly replacing the heating rod, and the circuit of the heating rod 504 can be quickly connected with the power supply circuit by the conductive block 509 and the contact piece 510, so that the heating rod 504 is replaced on line by the heating assembly 5 without being replaced by stopping, the temperature change is reduced, and the stability of experimental data is improved; through holes are formed in the middles of the tops of the upper cover 502 and the lower cover 503, the cylinder 501 is sleeved on the surface of the workpiece 7, the top of the cylinder 501 is fixedly connected with the upper part of the rack 1 through a support, and the loading system 2 and the heating rod 504 are electrically connected with the control system 3; the clamp body 6 comprises two pipe hoops 601, two expansion blocks 602 and a center shaft 603, through holes are formed in the side walls of the two pipe hoops 601, bolts penetrate through the through holes, the two pipe hoops 601 are fixedly connected through the bolts, the two expansion blocks 602 are arranged in a cylinder formed by the two pipe hoops 601, the center shaft 603 penetrates between the two expansion blocks 602, and external threads are arranged on the side wall of the upper portion of the center shaft 603.
As shown in fig. 4-5, the tandem assembly 4 includes an upper tandem frame 401 and a lower tandem frame 402, the upper serial frame 401 and the lower serial frame 402 have the same structure, the upper serial frame 401 comprises two parallelogram frames which are sequentially hinged end to end by four connecting rods, the upper and lower hinge points of the opposite surfaces of the two parallelogram frames are respectively hinged with a connecting shaft 403, the left and right hinge points of the opposite surfaces of the two parallelogram frames are respectively hinged with a hinge shaft 404, by arranging the series connection component 4, a plurality of samples can be connected in series and connected into the testing machine to test the plurality of samples at one time, the efficiency of the test is improved, the test equipment is saved, therefore, the investment of experimental equipment is saved, two ends of one articulated shaft 404 are respectively articulated with a buffer rod 405, two ends of the other articulated shaft 404 are respectively articulated with the other end of the buffer rod 405, and the two buffer rods 405 are parallel to each other; as shown in fig. 7, the buffer rod 405 includes a cylinder 408, a piston 416 and a piston rod 409, the piston 416 is movably inserted into the cylinder 408, one end of the piston rod 409 is fixedly connected to the outer end of the piston 416, a cylinder cover is disposed at the second end of the cylinder 408, a sealing ring is disposed between the cylinder cover and the piston rod 409, the top of the first end of the cylinder 408 is communicated with a flow pipe 410, the other end of the flow pipe 410 is communicated with a collection box 412, a buffer joint 411 is disposed in the middle of the flow pipe 410, the first end of the cylinder 408 is hinged to one end of one hinge shaft 404 through a hinge lug, the second end of the piston rod 409 is hinged to one end of another hinge shaft 404 through a hinge lug, and the cylinder 408 is filled with hydraulic oil; as shown in fig. 8, a plurality of baffles 413 are hinged to the side surface of the inner wall of the buffer section 411, a reset elastic sheet 414 is arranged on the side surface of the baffle 413, the other end of the reset elastic sheet 414 is fixedly connected with the side surface of the inner wall of the buffer section 411, a limiting block 415 is lapped at the bottom of the baffle 413, and the other end of the limiting block 415 is fixedly connected with the inner side wall of the buffer section 411; the baffle 413 tilts towards one side, the tilting direction of the baffle 413 is opposite to the flow direction of liquid in the buffer joint 411, and by arranging the buffer rod 405 and the buffer joint 411, the buffer rod 405 can slowly shrink under the action of the buffer joint 411 after one sample is broken, a certain buffer effect is achieved, the stability of load is kept, the phenomenon that the loading system 2 suddenly loses resistance after one sample is broken to cause damage to the loading system 2 is avoided, the phenomenon that the other sample loses load to cause instability of experimental data is avoided, and the phenomenon that the sample is impacted by loading again after the load is lost can be avoided; as shown in fig. 6, the top and the bottom of the connecting shaft 403 are fixedly connected with an upper screw 417 and a lower screw 418 through a bracket, respectively, the surface of the lower screw 418 of the connecting shaft 403 at the lower part of the upper tandem frame 401 and the surface of the upper screw 417 of the connecting shaft 403 at the upper part of the lower tandem frame 402 are in threaded connection with a threaded sleeve 406, the upper screw 417 of the connecting shaft 403 at the upper part of the upper tandem frame 401 is fixedly connected with the upper part of the machine frame 1, and the lower screw 418 of the connecting shaft 403 at the lower part of the lower tandem frame 402 is fixedly connected with the upper part of the loading; the surface of the lower screw 418 of the connecting shaft 403 at the upper part of the upper tandem frame 401, the surface of the upper screw 417 of the connecting shaft 403 at the lower part thereof, the surface of the lower screw 418 of the connecting shaft 403 at the upper part of the lower tandem frame 402 and the surface of the upper screw 417 of the connecting shaft 403 at the lower part thereof are both in threaded connection with a connecting sleeve 407, and both ends of the connecting sleeve 407 are both provided with threaded holes; the upper end of the middle shaft 603 is in threaded connection with a threaded hole at one end of the connecting sleeve 407.
The working process is as follows: when the device is used, after the control system 3 is powered on, two ends of a thin-walled pipe test piece are fixed through the clamp body 6 and are in threaded connection with the connecting sleeves 407 at the upper end and the lower end of the inner side of the upper series frame 401, the other thin-walled pipe test piece is fixedly connected with the upper end and the lower end of the inner side of the lower fixing frame in the same method, when a workpiece 7 is fixed, the expansion block 602 and the middle shaft 603 are inserted into the pipe, the two pipe hoops 601 are buckled at the end parts of the pipe and are locked through bolts, the barrel 501 of the heating assembly 5 is sleeved on the surface of the workpiece 7, and then two ends of the series assembly 4 are respectively and fixedly connected with the top of the rack 1 and the loading system 2 to;
the heating assembly 5 heats the workpiece 7, the loading system 2 applies a load to the workpiece 7, the central axis 603 moves toward one end when the workpiece 7 is stretched, under the action of the conical surface, the two expansion blocks 602 are pushed to move towards two sides to tension the inner wall of the pipe, but due to the fixation of the pipe clamp 601, the pipe is firmly clamped between the pipe clamp 601 and the expansion block 602, the serial frame is in a parallelogram structure, the distance between the upper end and the lower end is increased, the distance between the left end and the right end is necessarily reduced, the creep stretching speed of the workpiece 7 is slower, the contraction of the left end and the right end of the parallelogram frame is also slower, the contraction of the buffer rod 405 is slower, the piston rod 409 pushes the piston 416 to compress the hydraulic oil in the cylinder 408, and because the moving speed of the piston 416 is slower, hydraulic oil in the hydraulic cylinder can smoothly flow into the collecting box 412 along the flow pipe 410, and the resistance is only the relative friction force and the liquid flow resistance of each part of the piston rod 409; when one workpiece 7 is broken, the upper end and the lower end of the corresponding tandem frame lose the constraint force of the workpiece 7, the workpiece 7 is stretched towards the two ends by the loading system 2, the buffer rod 405 contracts after being subjected to large pressure, the piston 416 pushes hydraulic oil to flow out, and when the workpiece passes through the buffer joint 411, the baffle 413 is pushed to expand due to the large pressure and flow rate of the hydraulic oil, so that the hydraulic oil is choked, the buffer rod 405 slowly contracts, and the other workpiece 7 is subjected to stable load force;
when the heating rod 504 needs to be replaced, the fixing cover 507 is unscrewed, then the heating rod 504 is pulled downwards, the supporting rod 506 is pulled out together with the heating rod 504, then another heating rod 504 is inserted into the supporting cylinder 505, the contact piece 510 is contacted with the conductive block 509, and the conductive block 509 is pressed on the side surface of the contact piece 510 under the action of the spring 508, so that the rapid replacement is completed.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are possible which remain within the scope of the appended claims.
Claims (8)
1. The thin-wall pipe full-pipe test tool clamp comprises a clamp body (6) and is characterized in that the clamp body (6) comprises two pipe hoops (601), two expansion blocks (602) and a center shaft (603), through holes are formed in the side walls of the two pipe hoops (601), bolts penetrate through the through holes, the two pipe hoops (601) are fixedly connected through the bolts, the two expansion blocks (602) are arranged in a cylinder formed by the two pipe hoops (601), the center shaft (603) penetrates between the two expansion blocks (602), and external threads are arranged on the side wall of the upper portion of the center shaft (603).
2. The thin-walled tube full-tube test tooling clamp as claimed in claim 1, wherein the inner side wall of the expansion block (602) is a conical surface, the lower part of the center shaft (603) is conical, and the conical side surface of the center shaft (603) is overlapped with the conical inner wall surface of the expansion block (602).
3. The thin-walled tube whole tube test tooling clamp as claimed in claim 1, wherein a workpiece (7) penetrates through the tube hoop (601), the outer side wall of the workpiece (7) is overlapped with the inner side wall of the tube hoop (601), and the outer side walls of the two expansion blocks (602) are overlapped with the inner side wall of the workpiece (7).
4. The high-temperature creep endurance test equipment comprises a rack (1), a loading system (2) fixedly connected with the lower part of the rack (1) and a control system (3) located on the side face of the rack (1), and is characterized in that the upper part of the loading system (2) is fixedly connected with a series assembly (4), a workpiece (7) is arranged in the middle of the series assembly (4), two ends of the workpiece (7) are fixedly connected with clamp bodies (6), two ends of the workpiece (7) are fixedly connected with two ends of the series assembly (4) through the clamp bodies (6), a heating assembly (5) is sleeved on the outer side of the workpiece (7), and the heating assembly (5) and the loading system (2) are electrically connected with the control system (3) through conducting wires; the clamp body (6) comprises two pipe hoops (601), two expansion blocks (602) and a center shaft (603), through holes are formed in the side walls of the two pipe hoops (601), bolts penetrate through the through holes, the two pipe hoops (601) are fixedly connected through the bolts, the two expansion blocks (602) are arranged in a cylinder formed by the two pipe hoops (601), the center shaft (603) penetrates between the two expansion blocks (602), and external threads are arranged on the side wall of the upper portion of the center shaft (603).
5. The high-temperature creep rupture test equipment according to claim 4, wherein the series assembly (4) comprises an upper series frame (401) and a lower series frame (402), the upper series frame (401) and the lower series frame (402) have the same structure, the upper series frame (401) comprises two parallelogram frames which are sequentially hinged end to end by four connecting rods, the upper and lower hinged points of the opposite surfaces of the two parallelogram frames are hinged with connecting shafts (403), the left and right hinged points of the opposite surfaces of the two parallelogram frames are hinged with hinged shafts (404), the two ends of one hinged shaft (404) are hinged with buffer rods (405), the two ends of the other hinged shaft (404) are respectively hinged with the other ends of the buffer rods (405), and the two buffer rods (405) are parallel to each other; the top and the bottom of the connecting shaft (403) are respectively fixedly connected with an upper screw (417) and a lower screw (418) through a support, the surface of the lower screw (418) of the connecting shaft (403) at the lower part of the upper serial frame (401) is in threaded connection with the surface of the upper screw (417) of the connecting shaft (403) at the upper part of the lower serial frame (402) to form a threaded sleeve (406), the upper screw (417) of the connecting shaft (403) at the upper part of the upper serial frame (401) is fixedly connected with the upper part of the rack (1), and the lower screw (418) of the connecting shaft (403) at the lower part of the lower serial frame (402) is fixedly connected with the upper part of the loading system (2);
the surface of a lower screw rod (418) of a connecting shaft (403) at the upper part of the upper serial frame (401), the surface of an upper screw rod (417) of the connecting shaft (403) at the lower part of the upper serial frame, the surface of a lower screw rod (418) of a connecting shaft (403) at the upper part of the lower serial frame (402) and the surface of an upper screw rod (417) of the connecting shaft (403) at the lower part of the lower serial frame are both in threaded connection with a connecting sleeve (407), and both ends of the connecting sleeve (407) are both provided with; the upper end of the middle shaft (603) is in threaded connection with a threaded hole at one end of the connecting sleeve (407).
6. The high-temperature creep endurance test equipment according to claim 5, wherein the buffer rod (405) comprises a cylinder (408), a piston (416) and a piston rod (409), the piston (416) is movably inserted into the cylinder (408), one end of the piston rod (409) is fixedly connected with the outer end of the piston (416), the second end of the cylinder (408) is provided with a cylinder cover, a sealing ring is arranged between the cylinder cover and the piston rod (409), the top of the first end of the cylinder (408) is communicated with a runner pipe (410), the other end of the runner pipe (410) is communicated with a collection box (412), the middle of the runner pipe (410) is provided with a buffer joint (411), the first end of the cylinder (408) is hinged with one end of one hinge shaft (404) through a hinge lug, the second end of the piston rod (409) is hinged with one end of the other hinge shaft (404) through a hinge lug, the cylinder (408) is filled with hydraulic oil.
7. The high-temperature creep endurance test equipment according to claim 6, wherein a plurality of baffles (413) are hinged to the side surface of the inner wall of the buffer joint (411), a reset spring plate (414) is arranged on the side surface of the baffle (413), the other end of the reset spring plate (414) is fixedly connected with the side surface of the inner wall of the buffer joint (411), a limiting block (415) is lapped at the bottom of the baffle (413), and the other end of the limiting block (415) is fixedly connected with the inner side wall of the buffer joint (411); the baffle (413) tilts towards one side, and the tilting direction of the baffle (413) is opposite to the flow direction of liquid in the buffer joint (411).
8. The high-temperature creep endurance test apparatus according to claim 4, wherein the heating assembly (5) comprises a cylinder body (501), the top and the bottom of the cylinder body (501) are respectively and fixedly connected with an upper cover (502) and a lower cover (503), the bottom of the lower cover (503) is provided with a support cylinder (505) along the circumferential direction thereof, both sides of the inner wall of the support cylinder (505) are provided with clamping grooves, the bottom of the clamping grooves is provided with blind holes, springs (508) are arranged in the blind holes, the other end of the springs (508) is lapped with a conductive block (509), a support rod (506) is arranged in the support cylinder (505) in a penetrating manner, both sides of the support rod (506) are respectively and fixedly connected with contact pieces (510), the top of the support rod (506) is provided with a heating rod (504), the top of the heating rod (504) penetrates through the top of the support cylinder (505), and the power input end of the heating rod (504) is electrically, the side surface of the contact piece (510) is overlapped with the side surface of the conductive block (509), the side wall of the support cylinder (505) is provided with external threads, the bottom of the support cylinder (505) is in threaded connection with a fixed cover (507), the top of the inner wall of the fixed cover (507) is overlapped with the bottom end of the support rod (506), and the bottom of the fixed cover (507) is fixedly connected with a handle (511); through holes are formed in the middle of the tops of the upper cover (502) and the lower cover (503), the cylinder body (501) is sleeved on the surface of the workpiece (7), the top of the cylinder body (501) is fixedly connected with the upper portion of the rack (1) through a support, and the heating rod (504) is electrically connected with the control system (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011606133.5A CN112798432B (en) | 2020-12-30 | 2020-12-30 | Thin-wall pipe full-pipe test tool clamp and high-temperature creep endurance test equipment |
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| CN202011606133.5A CN112798432B (en) | 2020-12-30 | 2020-12-30 | Thin-wall pipe full-pipe test tool clamp and high-temperature creep endurance test equipment |
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| CN112798432B CN112798432B (en) | 2022-05-13 |
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| CN112798432B (en) | 2022-05-13 |
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Effective date of registration: 20230506 Address after: 710089 No. 8, Lantian Second Road, Yanliang District, Xi'an City, Shaanxi Province Patentee after: AVIC touchstone Testing Technology (Xi'an) Co.,Ltd. Address before: 065300 Chaobai River Economic Development Zone, Dachang Hui Autonomous County, Langfang City, Hebei Province Patentee before: AVIC touchstone Testing Technology (Dachang) Co.,Ltd. |
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