CN104914042B - High-temperature high pressure water or steam ambient fretting apparatus - Google Patents

High-temperature high pressure water or steam ambient fretting apparatus Download PDF

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Publication number
CN104914042B
CN104914042B CN201510394910.7A CN201510394910A CN104914042B CN 104914042 B CN104914042 B CN 104914042B CN 201510394910 A CN201510394910 A CN 201510394910A CN 104914042 B CN104914042 B CN 104914042B
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CN
China
Prior art keywords
block
fixture
temperature
pressure water
workpiece
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CN201510394910.7A
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Chinese (zh)
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CN104914042A (en
Inventor
梅金娜
薛飞
彭群家
张路
韩姚磊
冯亚飞
索江龙
Original Assignee
苏州热工研究院有限公司
中国广核集团有限公司
中国广核电力股份有限公司
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Priority to CN201510394910.7A priority Critical patent/CN104914042B/en
Publication of CN104914042A publication Critical patent/CN104914042A/en
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Publication of CN104914042B publication Critical patent/CN104914042B/en

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Abstract

The invention discloses a kind of high-temperature high pressure water or steam ambient fretting wear experiment testing machine, wherein by setting fixture come two workpiece of clamp assay, and be placed in autoclave, by high temperature high pressure water circulation system so that being in high-temperature high pressure water or steam ambient in autoclave, and exciting effect is applied to the test piece in autoclave by loading device, so as to carry out high-temperature high pressure water or steam ambient fretting wear experiment.The testing machine carries out micro-displacement amplitude, compared with the test of high vibration frequency micro-moving frictional wear under the conditions of can simulating nuclear power station one, secondary circuit temperature, pressure and water chemistry;The testing machine can enter line slip wear test or impact wear test, and measurement can obtain the coefficient of friction and the coefficient of waste between friction pair;The rational deployment of each part of testing machine, it is ensured that the load of the testing machine and displacement loading are effectively, reliably;The control of load and measurement accuracy are high, can quantitatively obtain the frictional force between friction pair.

Description

High-temperature high pressure water or steam ambient fretting apparatus
Technical field
The present invention relates to a kind of high-temperature high pressure water or steam ambient fretting apparatus.
Background technology
Often there is component wear Problem of Failure, some knots especially in nuclear power plant system caused by vibration in practice in engineering Component structural member adjacent thereto under Flow vibration effect is collided, and then the fretting wear of generation micro-displacement amplitude is asked Topic.Wherein, the relative motion modes between friction pair can be that the way of contact between sliding and impact, friction pair can be Point, line, surface are contacted, and measurement needs to obtain the coefficient of friction and the coefficient of waste between friction pair.Current experimental study is more difficult, Coefficient of friction, the coefficient of waste are difficult to measure, this examination tested mainly due to fretting wear under high-temperature high pressure water or steam ambient Test wear test jig Design in machine and autoclave and there is technical barrier, existing testing machine is not applied for simulating core Power station one, secondary circuit temperature, pressure, water chemistry condition carry out micro-displacement amplitude, compared with high vibration frequency micro-moving frictional wear Test.
The content of the invention
The invention aims to solve the technical barrier of prior art there is provided one kind to simulate high-temperature high pressure water or steaming The testing machine of vapour environment fretting wear.
To reach above-mentioned purpose, the technical solution adopted by the present invention is:A kind of high-temperature high pressure water or steam ambient fine motion mill Testing machine is damaged, it is described for the fretting wear experiment under high-temperature high pressure water or steam ambient between the first workpiece and second workpiece Testing machine includes:
Frame;
Autoclave, including kettle and kettle cover, the kettle can be engaged with the kettle cover and form a closed environment Chamber, the kettle is liftably located in the frame with least one part in kettle cover;
Fixture, the fixture is located in the environmental chamber, and the fixture at least includes being used to mutually fix with the kettle cover The fixture mount of connection, the first clamp assemblies for clamping first workpiece, for clamp the second workpiece second Clamp assemblies, first workpiece is in contact in the horizontal direction with the second workpiece, and first clamp assemblies at least include The one upper fixture body that can be moved up and down, first workpiece is fixedly mounted on the upper fixture body, and the fixture also includes For provide first workpiece with the second workpiece holding down assembly along horizontal left and right directions thrust;
Loading device, including can be located in the frame and on the autoclave to relatively described kettle cover oscilaltion Side actuator, be fixedly arranged on the displacement transducer of the actuator upper end, be fixedly arranged on the actuator lower end load transducer, Upper end is connected to what the connecting shaft of the load transducer, lower end passed through the kettle cover and be fixedly connected with the upper fixture body phase Balance shaft, the upper end of the balance shaft is mutually fixedly connected with the lower end of the connecting shaft;
The testing machine also includes being used to provide the environmental chamber of the autoclave with high-temperature high pressure water or steam ring The high temperature high pressure water circulation system in border, the stress state for monitoring and recording the loading device and the high-temperature high pressure water are followed The monitoring and control recording system of the environmental Kuznets Curves state of loop system.
Preferably, the kettle is used for including the metal body with inner chamber, regularly located at the metal body upper end The kettle flange that is connected with the kettle cover, be wrapped in the metal body with the outside of the kettle flange week portion heating mantle.
Further, metal body upper end inner side week portion has the concave station to lower recess, the lower end tool of the kettle cover There is boss that is downwardly projecting and being engaged with the concave station, the autoclave is also included located at the kettle and the kettle cover Between sealing ring, when the kettle cover is engaged with the kettle, the boss is engaged with the concave station, and the sealing Circle is regularly pressed between the boss and the concave station.
Preferably, the actuator is electromagnetic exciting actuator, and institute's displacement sensors, the load transducer are described The upper and lower ends of actuator are respectively positioned on the center position of the actuator, the upper end of the connecting shaft by universal joint with it is described Load transducer is mutually fixedly connected.
Preferably, the frame includes being used to install the lower bearing bracket body of the autoclave, for installing the loading device Upper spider body,
The lower bearing bracket body includes lower support plate, the middle branch for the kettle cover to be fixedly mounted that relative ground is fixedly installed Board, for be connected with the upper spider body phase upper bearing plate, regularly located at the lower support plate and the middle support plate Between and vertically extend many support posts, regularly be located between the upper bearing plate and the middle support plate and The many supporting upright posts and adjusting post vertically extended, it is vertical that the kettle is liftably located therein a support On post;
The upper spider body includes the sill that is fixed on the upper bearing plate, lower end and is fixed on the sill two Two guide upright posts at end, entablature regularly located at two guide upright post tops, oscilaltion located at two institutes State the middle cross beam between guide upright post, the actuator is fixedly mounted on wherein the middle cross beam, the guide upright post with it is described The locking mechanism for both to be locked is additionally provided between middle cross beam.
Preferably, the balance shaft is that the pressure self-balancing that can realize the applied extension force self-balancing in the autoclave is drawn Axle is stretched, the pressure self-balancing tensile axis is connected setting with the kettle cover dynamic sealing.
Preferably, first clamp assemblies are at least also located at the fixture branch with can moving in left-right direction including one The first block on frame, second clamp assemblies at least include one and are located at the fixture mount with can moving in left-right direction On the second block, the second workpiece regularly located at second block side and be in contact with first workpiece, First block and first workpiece are located at the different both sides of the upper fixture body respectively, and first block is along level side It is described to hold down assembly between first block and second block to keeping out on the upper fixture body.
Further, it is described to hold down assembly including the regulation that be rotatably located at around Pivot Point Center line on first block Screw rod, be mutually threadedly coupled with the adjusting screw rod and can relatively described adjusting screw rod side-to-side movement on the adjusting screw rod Adjusting bolt Adjusting screw, be mutually fixedly connected with the Adjusting bolt Adjusting screw spring stop, in left-right direction extend and can transport in left-right direction The studdle being located at dynamicly on second block, the end of the studdle can be kept out in the spring in the horizontal direction On baffle plate or on the Adjusting bolt Adjusting screw, described hold down assembly also includes extension in left-right direction and one end is regularly located at described Spring lever on second block, the other end of the spring lever is provided with locating part, the locating part and the spring stop it Between be additionally provided with for providing the flexible member along the spring lever axial pressing force.
Further, the guide through hole for being available for the spring lever to pass axially through, institute are offered on the spring stop State locating part to pass vertically on the other end of the guide through hole located at the spring lever, the flexible member is to be arranged Spring on the spring lever, the two ends of the spring are kept out on the locating part and the spring stop respectively, described Limited block is fixedly provided with fixture mount, the limited block is located at the bullet in the fixture mount with second block Limiting through hole is offered on the phase heterodoxy of spring base, the limited block, the spring lever passes axially through the limiting through hole, described Locating part is located at outside the limiting through hole.
Further, the fixture also includes the lower clamp body regularly in the fixture mount, the lower clamp It is oriented to when the left and right ends of body are respectively fixedly moved in left-right direction provided with first block and spacing the One limit assembly, for provide be oriented to when second block is moved in left-right direction with spacing the second limit assembly,
Two the first height blocks that first limit assembly includes vertically extending, extend along the longitudinal direction and solid The first fixation clip of the upper end of the first height block described in two is scheduled on, the first height block described in two is located at first block respectively Front and rear sides, between the lower clamp body and first fixation clip and two the first height blocks formed first be oriented to There is the first stopper, first stopper, which can be located in side-to-side movement described first and be oriented to, leads on passage, first block In road;
Two the second height blocks that second limit assembly includes vertically extending, extend along the longitudinal direction and solid The second fixation clip of the second height block upper end described in two is scheduled on, two the second height blocks are located at second block respectively Front and rear sides, between the lower clamp body and second fixation clip and two the second height blocks formed second be oriented to There is the second stopper, second stopper, which can be located in side-to-side movement described second and be oriented to, leads on passage, second block In road.
Further, first workpiece is sheet material, and the second workpiece is tubing, between the sheet material and the tubing Point, line or face contact are formed, and the position contacted between the sheet material and the tubing is located at the connecting shaft and the balance On the central axis of axle.
Due to the utilization of above-mentioned technical proposal, the present invention has following advantages compared with prior art:The high temperature of the present invention Water under high pressure or steam ambient fretting wear experiment testing machine, wherein by setting fixture come two workpiece of clamp assay, and will It is placed in autoclave, by high temperature high pressure water circulation system so that being in high-temperature high pressure water or steam ambient in autoclave, and Apply exciting to the test piece in autoclave by loading device to act on, so as to carry out high-temperature high pressure water or steam ambient Fretting wear is tested.The testing machine carries out small position under the conditions of can simulating nuclear power station one, secondary circuit temperature, pressure and water chemistry Move amplitude, compared with the test of high vibration frequency micro-moving frictional wear;The testing machine can enter line slip wear test or impact wear test, The way of contact between friction pair can be point, line, surface contact, and measurement can obtain the coefficient of friction between friction pair and abrasion Coefficient;The rational deployment of each part of testing machine, it is ensured that the load of the testing machine and displacement loading are effectively, reliably;The control of load System and measurement accuracy are high, can quantitatively obtain the frictional force between friction pair.
Brief description of the drawings
Accompanying drawing 1 is the front view of the testing machine of the present invention;
Accompanying drawing 2 is the stereogram of the testing machine of the present invention;
Accompanying drawing 3 is the frame diagram of the testing machine of the present invention;
Accompanying drawing 4 is the front view of autoclave on the testing machine of the present invention;
Accompanying drawing 5 be along along accompanying drawing 4 A-A to cross section structure diagram;
Accompanying drawing 6 is the schematic perspective view that fixture is connected with autoclave kettle cover;
Accompanying drawing 7 is force-bearing situation schematic diagram when the first workpiece is in contact after being clamped with second workpiece on fixture;
Accompanying drawing 8 is the dimensional structure diagram one of testing machine upper fixture;
Accompanying drawing 9 is the main view perspective structure schematic diagram of fixture;
Accompanying drawing 10 is the dimensional structure diagram two of fixture;
Accompanying drawing 11 is the dimensional structure diagram three of fixture;
Accompanying drawing 12 is the structural representation of upper fixture body in fixture;
Accompanying drawing 13 is the structural representation of the first block on fixture;
Accompanying drawing 14 is the structural representation of the second block on fixture;
Wherein:
1st, upper spider body;11st, entablature;12nd, guide upright post;13rd, middle cross beam;14th, sill;15th, locked hand;16、 Fulcrum bearing;17th, wedge piece;
2nd, lower carriage body;21st, lower support plate;22nd, support post;23rd, middle support plate;24th, supporting upright post;25th, adjust vertical Post;26th, upper bearing plate;27th, lift drive mechanism;
3rd, autoclave;31st, kettle;311st, metal body;312nd, kettle flange;313rd, heating mantle;32nd, kettle cover;33rd, seal Circle;
4th, fixture;41st, fixture mount;411st, bottom plate;412nd, column;
42nd, the first clamp assemblies;421st, the first block;421a, the first stopper;421b, notch part;422nd, upper fixture body; 422a, groove;423rd, rolling member;
43rd, the second clamp assemblies;431st, the second block;431a, the second stopper;431b, 431c, arc surface;432nd, position Regulating block;433rd, pressing plate;
44th, the first limit assembly;441st, the first height block;442nd, the first fixation clip;445th, lower clamp body;
45th, the second limit assembly;451st, the second height block;452nd, the second fixation clip;
46th, hold down assembly;461st, adjusting screw rod;462nd, Adjusting bolt Adjusting screw;463rd, spring stop;464th, the first regulating element; 465th, studdle;466th, the second regulating element;467th, spring lever;468th, flexible member;469th, locating part;4610th, limited block;
5th, loading device;51st, actuator;52nd, displacement transducer;53rd, load transducer;54th, universal joint;55th, connecting shaft; 56th, balance shaft;
6th, the first workpiece(Sheet material);7th, second workpiece(Tubing).
Embodiment
Technical scheme is further elaborated with specific embodiment below in conjunction with the accompanying drawings.
Referring to the high-temperature high pressure water shown in Fig. 1, Fig. 2 or steam ambient fretting apparatus, in high-temperature high pressure water Or the fretting wear experiment in steam ambient between two workpiece, the two workpiece are respectively the first workpiece 6 and second workpiece 7, Friction pair is formed between first workpiece 6 and second workpiece 7, the geometry and size of the friction pair can be according to actual tests needs It is adjusted, can is point, line or face contact between friction pair, by the measurable friction pair of sliding wear test in HTHP Coefficient of friction and the coefficient of waste in water or steam ambient.The part that Flow vibration abrasion occurs in nuclear power plant system is generally pipe Material, another component shape for occurring fretting wear with it is various.In the present embodiment, test to slide wear test, the One workpiece 6 is sheet material, and second workpiece 7 is tubing, wherein, sheet material can be flat board or the unilateral plate for carrying curved surface, the first workpiece 6 with Second workpiece 7 is in contact as shown in Figure 7.
The testing machine includes:
Frame;
Autoclave 3, including kettle 31 and kettle cover 32, kettle 31 can cooperate with kettle cover 32 and form a closed ring Border chamber, the environmental chamber is used to accommodate high-temperature high pressure water or steam, kettle 31 and in the both parts of kettle cover 32 at least one Individual part is liftably located in frame, so that kettle cover 32 can be opened from kettle 31;
Fixture 4, the fixture 4 is in the environmental chamber of autoclave 3, and the fixture 4 is at least included for mutually solid with kettle cover 32 Surely the fixture mount 41 that connects, the first clamp assemblies 42 for clamping the first workpiece 6, for clamp second workpiece 7 second Clamp assemblies 43, the first workpiece 6 is in contact in the horizontal direction with second workpiece 7, the first clamp assemblies 42 at least include one can on The upper fixture body 422 of lower motion, the first workpiece 6 is fixedly mounted on upper fixture body 422, and the fixture 4 also includes being used to provide First workpiece 6 and second workpiece 7 hold down assembly 46 along horizontal left and right directions thrust;
Loading device 5, the loading device 5 includes can be with respect to the oscilaltion of kettle cover 32 in frame and positioned at autoclave The actuator 51 of 3 tops, the displacement transducer 52 for being fixedly arranged on the upper end of actuator 51, the load sensing for being fixedly arranged on the lower end of actuator 51 Device 53, upper end are connected to the connecting shaft 55 of load transducer 52, lower end through kettle cover 32 and are mutually fixedly connected with upper fixture body 422 Balance shaft 56, the upper end of balance shaft 56 is mutually fixedly connected with the lower end of connecting shaft 55.In the present embodiment, actuator 51 is used Electromagnetic exciting actuator, displacement transducer 52 is respectively positioned on actuator 51 with load transducer 53 in the upper and lower ends of actuator 51 Center position, to be respectively used to measurement and control amplitude and load.The upper end of connecting shaft 55 is passed by universal joint 54 and load Sensor 53 is connected, and is so conducive to the damage for protecting electromagnetic exciting actuator from extra side force.
The testing machine also includes being used to provide the environmental chamber of autoclave 3 with high-temperature high pressure water or the high temperature of steam ambient height Water circulation system is pressed, and for monitoring and recording the stress state of loading device 5 and the environment of high temperature high pressure water circulation system The monitoring and control recording system of state of a control.The general principles frame diagram of the testing machine is as shown in Figure 3.
In conjunction with specific embodiments, Each part is specific as follows on the testing machine:
Referring to shown in Fig. 1, Fig. 2, frame includes being used to install the lower bearing bracket body 2 of autoclave 3, for installing loading device 5 Upper spider body 1.
Lower bearing bracket body 2 includes lower support plate 21, the middle supporting for kettle cover 32 to be fixedly mounted that relative ground is fixedly installed Plate 23, for be connected with upper spider body 1 upper bearing plate 26, regularly be located between lower support plate 21 and middle support plate 23 and Many support posts 22 vertically extending, regularly it is located between upper bearing plate 26 and middle support plate 23 and along vertical side To many supporting upright posts 24 and adjusting post 25 on edge, kettle 31 is liftably located therein on a support post 22, supported Being provided between column 22 and kettle 31 is used to drive lift drive mechanism 27 of the kettle 31 along the oscilaltion of support post 22.Upper branch Certain height is left between board 26 and middle support plate 23, so that the kettle operation of opening for balance shaft 56 and autoclave 3 leaves sky Between.Many adjusting posts 25 are located at the inner side of many supporting upright posts 24, and many adjusting posts 25 are mainly used in supporting and adjusted The level of upper bearing plate 26, many supporting upright posts 24 in outside then play the supporting role of auxiliary.Lower support plate 21 passes through bolt Regularly on ground, it is provided with rubber blanket between ground, to play a part of vibration isolation.
Upper spider body 1 includes the sill 14 that is fixed on upper bearing plate 26, lower end and is fixed on the two ends of sill 14 Two guide upright posts 13, entablature 11 regularly located at two tops of guide upright post 13, oscilaltion located at two guiding Middle cross beam 13 between column 13, middle cross beam 13 is located between sill 14 and entablature 11 in the height direction.Actuator 51 It is fixedly mounted on middle cross beam 13, the locking machine for both to be locked is additionally provided between guide upright post 13 and middle cross beam 13 Structure, the locking mechanism is locked hand 15 herein, after height and position adjustment of the actuator about 51 is finished, passes through locked hand 15 lock middle cross beam 13 and so that the position of actuator 51 is fixed.
In above-mentioned setting, autoclave 3 encloses the lower portion set, actuator 51 and connecting shaft positioned at each part of lower bearing bracket body 2 55th, balance shaft 65 encloses the lower portion set positioned at each part of upper spider body 1.It can so be made with guarantee test sample in electromagnetic exciting Loading in the presence of dynamic device is in high-temperature high pressure water or steam ambient fretting apparatus general frame, it is ensured that The record of testing machine reasonable integral structure, load and displacement is effectively, reliably.
Referring to shown in Fig. 4, Fig. 5, kettle 31 includes the metal body 311 with inner chamber, is regularly located at metal body 311 Kettle flange 312 that upper end is used to being connected with kettle cover 32, it is wrapped in the outside of metal body 311 and kettle flange 312 week portion Heating mantle 313.Metal body 311, kettle flange 312 and heating mantle 313 are integrally formed in appearance.Lift drive mechanism 27 are connected with heating mantle 313, and the lifting of autoclave 3 is controlled by lifting heating mantle 313.The inner side of the upper end of metal body 311 All portions have the concave station to lower recess, and the lower end of kettle cover 32 has boss that is downwardly projecting and being engaged with above-mentioned concave station, Autoclave 3 is also included located at the sealing ring 33 between kettle 31 and kettle cover 32, when kettle cover 32 is engaged with kettle 31, kettle cover 32 On boss be engaged with the concave station on kettle 31, sealing ring 33 be regularly pressed between boss and concave station and cause kettle cover 32 Closed environmental chamber is formed between kettle 31.Herein, sealing ring 33 can use stainless steel tooth form sealing gasket, can be effectively close Envelope.
Shown in Figure 6, fixture 4 is regularly located on kettle cover 32 by fixture mount 41.Fixture mount 41 includes bottom plate 411st, at least three root posts 412 that lower end is fixed on bottom plate 411 and axial line is vertically extending, herein column 412 have Four, four root post 412 is respectively arranged on four angles of bottom plate 411, and the upper end of all columns 412 is fixedly attached to height On the kettle cover 32 for pressing kettle 3, so that fixture 4 to be fixed on kettle cover 32 and can insert in the environmental chamber of autoclave 3.
In the present embodiment, the concrete structure of the fixture 4 is referring to shown in Fig. 8 to Figure 14, in the present embodiment, the first clamping group Part 42 is used to clamp sheet material 6, and the second clamp assemblies 43 are used to clamp tubing 7, and the first clamp assemblies 42 are located at fixture mount 41 Left side, the second clamp assemblies 43 are located at the right side of fixture mount 41, the folder through the first clamp assemblies 42 and the second clamp assemblies 43 Hold, sheet material 6 sets to form friction pair with contacting with each other in the horizontal direction with tubing 7.
Referring to shown in Fig. 8 to Figure 14, the first clamp assemblies 42, which at least also include one, to be located at moving in left-right direction The first block 421 in fixture mount 41, the workpiece 6 of the first block 421 and first is located at different the two of upper fixture body 422 respectively Side, the first block 421 is kept out on upper fixture body 422 in the horizontal direction.The structure of the upper fixture body 422 is as shown in figure 12, plate Material 6 is regularly on the right side of the lower end of upper fixture body 422, and first baffle 421 is located at the left side of upper fixture body 422, the first gear Rolling member 423 is provided with the right-hand member of block 421 by axis of rotation, wherein the axial line of above-mentioned rotating shaft extends along the longitudinal direction, Rolling member 423 rollably contradicts in the left end face of upper fixture body 422 to form the conflict to upper fixture body 422 and be applied with Clamp body 422 is with the power on horizontal left and right directions.Shown in Figure 13, the right-hand member of the first block 421 has a breach 421b, rolling Moving part 423 is rotatably arranged in the right-hand member of the first block 421 and part is located in breach 421b;The left end face of upper fixture body 422 Upper to have a groove 422a, rolling member 423 is rollably kept out on groove 422a cell wall, and groove 422a is formed to rolling Guiding when part 423 is with respect to upper fixture 422 scroll-up/down of body.Herein, the rolling member 423 uses bearing.
Referring to shown in Fig. 8 to Figure 14, the second clamp assemblies 43, which at least also include one, to be located at moving in left-right direction The second block 432 in fixture mount 41, tubing 7 is clamped in the left side of second block 432, and second clamp assemblies 43 are also wrapped The position adjustments block 432 on the second block 432, the pressing plate 433 being located in vertically in the tube chamber of tubing 7 are included, the position is adjusted Locking nub 432, pressing plate 433 are consistent with the axially extending direction of tubing 7, and the two ends that pressing plate 433 passes the tube chamber of tubing 7 are fixed respectively It is connected on the second block 431, the face being in contact between pressing plate 433 and the tube chamber of tubing 7 is consistent with the tube chamber profile of tubing 7 Arc surface, tubing 7 is the arc surface consistent with the lateral profile of tubing 7, position with face that position adjustments block 432 is in contact Regulating block 432 is also to be engaged the arc surface contacted in face with the face that the second block 431 is in contact, and just will stably can so be managed Material 7 is fixed on the second block 431.It is shown in Figure 14, have in the left end face of the second block 431 and vertically extend Arc surface 431b and horizontally extending arc surface 431c so that discriminably for position adjustments block 432 and tubing 7 Vertical direction installs the installation with horizontal direction, to be needed to adjust the modes of emplacement of tubing 7 according to experiment.Certainly, when tubing 7 When lateral profile is engaged with the arc surface on the second block 431, also can non-use position regulating block 432, and directly through Tubing 7 is fixed on second baffle 431 by pressing plate 433.In second clamp assemblies 43, arc surface 431b and 431c, position are adjusted The arc surface for being used to be in contact with tubing 7 in locking nub 432 all should do increase roughness processing, to strengthen when tubing 7 is installed outside it Stiction between side profile and position adjustments block 432 or between the arc surface of the second block 431, it is to avoid tubing 7 due to Rolled by caused by frictional force, it is ensured that tubing 7 is clamped by stabilization.
First clamp assemblies 42 are clamped to sheet material 6 with tubing 7 respectively with the second clamp assemblies 43, should be caused during installation Contact point, line or face between sheet material 6 and tubing 6 are located on the central axis of testing machine, that is, positioned at connecting shaft 55 and balance On the central axis of axle 56.
Referring to shown in Fig. 8 to Figure 11, the fixture 4 also includes the lower clamp body 445 regularly in fixture mount 41, should Lower clamp body 445 is regularly on the bottom plate 411, and its center position is additionally provided with centering post, and the centering post is from top to bottom successively It is interference fitted through lower clamp body 445 and the formation of bottom plate 411, so as to limit the center of lower clamp body 445.
Respectively fixedly moved in left-right direction provided with the first block 421 left and right ends of lower clamp body 445 When be oriented to spacing the first limit assembly 44, be oriented to and spacing for providing when the second block 431 move in left-right direction Second limit assembly 45.First limit assembly 44 is located at the left end of lower clamp body 445, and it includes two vertically extended First height block 441, the first fixation clip for extending along the longitudinal direction and being fixed on two first highly fast 441 upper ends, two One height block 441 is respectively the front and rear sides of the first block 421, the fixation clip 442 of lower clamp body 445 and first and two first The first guide channel is formed between height block 441, the right-hand member of the first block 421 has the first stopper 421a, first stopper 421a can be located in the first guide channel with moving in left-right direction.Second limit assembly 45 is located at the right side of lower clamp body 445 End, its two second height block 451 for including vertically extending, extends and is fixed on two second height blocks along the longitudinal direction Second fixation clip of 451 upper ends, two the second height blocks 451 are located at the front and rear sides of the second block 431, lower clamp body respectively 445 and second form the second guide channel, the left end of the second block 431 between fixation clip 452 and two the second height blocks 451 With the second stopper 431a, second stopper 431a can be located in the second guide channel with moving in left-right direction.
Gap, the second fixation clip between the lower surface of first fixation clip 441 and the first stopper 421a upper surface Minim gap should be left between 451 lower surface and the second stopper 431a, the gap is no more than 0.01mm.So on the one hand protect The slip of the first block 421 and the second block 431 in left-right direction is demonstrate,proved, so as to may be such that to the first block 421 and second The thrust of block 431 can be effectively transmitted to sheet material 6 and tubing 7, while being conveniently adjusted connecing between sheet material 6 and tubing 7 Contact, line or face are located on the central axis of testing machine;On the other hand the first block 421 and the second block 431 are effectively limited Relative displacement beyond allowance occurs in the vertical direction.
Referring to shown in each accompanying drawing, hold down assembly 46 be located between the first block 421 and the second block 431.This holds down assembly 46 include can be around the adjusting screw rod 461 of Pivot Point Center line rotatably on the first block 421, threadably located at regulation spiral shell The right-hand member of bar 461 and can the side-to-side movement of relative adjustment screw rod 461 Adjusting bolt Adjusting screw 462 on the adjusting screw rod 461, be fixed on tune The spring stop 463 of the right-hand member of swivel nut 462 is saved, adjusting screw rod 461 extends in left-right direction.It is located at first gear on adjusting screw rod 461 The left side of block 421, which is provided with, to be used to drive the first regulating element 464 that adjusting screw rod 461 rotate around Pivot Point Center line, rotates the One regulating element 464, you can drive adjusting screw rod 461 to be rotated around Pivot Point Center line, so as to drive Adjusting bolt Adjusting screw 462 and spring catch Plate 463 is moving axially relative along adjusting screw rod 461.First regulating element 464 can use adjusting nut, the adjusting nut with Adjusting screw rod 461 is fixedly connected, so as to drive adjusting screw rod 461 to rotate, and then drives Adjusting bolt Adjusting screw 462 and spring catch Plate 463 is moved along horizontal left and right directions.After adjusting screw rod 461 is adjusted finishing, it can be contradicted by jackscrew to adjusting screw rod 461 Outside circumference on rotated with limiting adjusting screw rod 461 during follow-up work, it is ensured that Adjustment precision.
46 are held down assembly also including extending in left-right direction and can move in left-right direction on the second block 431 Studdle 465, the left part of studdle 465 is kept out on spring stop 463 or on Adjusting bolt Adjusting screw 462, studdle 465 left side is plane.Second block 431, which is provided with, to be used to drive studdle 465 to rotate to drive around Pivot Point Center line Make studdle 465 with respect to the second regulating element 466 of the side-to-side movement of the second block 431, herein, the second regulating element 466 is In knob, the oval-shaped groove that second regulating element 466 is opened up on the second block 431.
Hold down assembly 46 spring levers for also including in left-right direction extending and right-hand member is regularly located on the second block 431 467, the left end of spring lever 467 is provided with locating part 469, is additionally provided between locating part 469 and spring stop 463 for providing bullet The flexible member 468 of the axial pressing force of spring base 467.Herein, offered on spring stop 463 and be available for spring lever 467 vertically The guide through hole passed through, flexible member 468 is the spring being set on spring lever 467, and the two ends of the spring 468 are kept out respectively On locating part 469 and spring stop 463, wherein, the parameter of spring should be selected according to the demand of clamping load in experiment.
Limited location block 4610 is also fixedly disposed on the bottom plate 411 of fixture mount 41, the limited block 4610 is in fixture mount Be located at the phase heterodoxy of spring lever 467 on 41 with the second block 431, offer limiting through hole on limited block 4610, spring lever 467 with Spring 468 jointly passes axially through above-mentioned limiting through hole, and locating part 469 is then located at outside limiting through hole and positioned at limited block 4610 Left side.The limiting through hole is stepped hole, and the stepped hole keeps left, and a lateral aperture is small, a lateral aperture of keeping right is big, by ensureing to keep left Less gap between one side opening and its internal left part of spring lever 467, so that the upper and lower displacement of limited spring bar 467. In the present embodiment, holding down assembly 46 has two groups, this two groups 46 front and rear sides for being respectively arranged on fixture mount 41 that hold down assembly.Fixture Every side of the fore-and-aft direction of support 41 holds down assembly in 46, and spring lever 467 has two, the axial line of this two spring levers 467 It is parallel to each other and is respectively located on the both sides up and down of adjusting screw rod 461, every spring lever 467 and is equipped with spring 468.
So, by operating the i.e. adjustable adjusting screw rod 461 of the first regulating element 464 to screw in inside Adjusting bolt Adjusting screw 462 Length, so that drive spring stop 463 to move in left-right direction, and then the reduction length of regulation elasticity element 468.When elastic member Part 468 is compressed, through flexible member 468 the two ends stress of spring lever 467 is in same level left and right directions and direction is different.By In power of the left end of spring lever 467 by horizontal direction to the left so that second block 431 fixed thereto by horizontal direction to the left Power.Because spring stop 463 is in contact and power by level to the right with the right side of flexible member 468, and then pass sequentially through Adjusting bolt Adjusting screw 462, the regulating element 464 of adjusting screw rod 461 and first cause power of first block 421 by level to the right, first The power of the level that block 421 is subject to the right is transferred to upper fixture body 422 by the rolling member 423 of its right-hand member.So, hold down assembly 46 is provide with flexible member 468 by the consistent thrust of compress force value between sheet material 6 and tubing 7.This holds down assembly in 46, leads to Cross using spring 468 as force application element, compared to the bolt loading generally used more suitable for high-temperature high pressure water or steam this One special experimental enviroment, loading is more accurately, stably, reliably.
On the testing machine, balance shaft 56 is that can test the pressure self-balancing of the applied extension force self-balancing in autoclave 3 Tensile axis, needs to ensure good sealing between the pressure self-balancing tensile axis and kettle cover 32, realizes high-temperature high pressure water or steam Under the conditions of dynamic sealing.Simultaneously as it has pressure self-balancing function, therefore the inside and outside differential pressure of autoclave 3 can be offset, eliminated The thrust that pressure difference is produced.Using the pressure self-balancing tensile axis can ensure in electromagnetic exciting actuator reciprocatory movement not by Influence of the autoclave inside and outside differential pressure to load, is swashed without need to only be provided from big load actuator from side crops industry actuator Shake, load control and measurement accuracy can be improved, quantitatively obtain the frictional force between friction pair.During design, pressure should ensured The diameter of tensile axis is reduced on the premise of the rigidity of self-balancing tensile axis 56 as best one can, reduces the contact area of sealing ring and axle sleeve, From the small sealing ring of coefficient of friction.
On loading device 5, from actuator 51 to autoclave 3 in fixture 4 between connection member require it is more few better, and It is required to meet between rigidity requirement, each part and is fastenedly connected, gap is reduced as far as possible, to ensure that displacement is effectively transmitted in kettle, from Actuator 51 to each part between fixture 4 keeps coaxial, and keeps vertical with the kettle cover 32 of autoclave 3.
The kettle cover 32 of autoclave 3 is provided with two through holes that through-thickness extends, and one of them is used to place thermocouple, Another is used for connected water outlet pipe, and the water inlet of high temperature high pressure water circulation system is first radially accessed by the outer rim of kettle cover 32, then edge Axially downwardly pass kettle cover 32 to enter in the environmental chamber of autoclave 3, so as to maintain experiment design temperature in autoclave 3.
So, when carrying out fretting wear experiment using the testing machine, two piece-holders are fixed by fixture 4 first: Sheet material 6 is gripped by the first clamp assemblies 42, grips tubing 7 by the second clamp assemblies 43, and upper fixture Body 422 is in the state being lifted up with balance shaft 56.The second adjustment element 466 is adjusted first so that studdle 465 is kept out On spring stop 463, continue to adjust the second regulating element 466 so that the first block 421 and the second block 431 are along level side To the left and moving right respectively, so that vacating certain space between tubing 7 and sheet material 6, middle cross beam 13 is then lifted, So that actuator 51, connecting shaft 55 and balance shaft 56 decline together with upper fixture body 422 so that upper fixture body 422 is along vertical side Middle cross beam 13 is locked to being down in above-mentioned space behind suitable position.At this moment, then the second regulating element 466 is adjusted so that support Screw rod 465 is separated with spring stop 463, the first block 421 and the move toward one another of the second block 431 and in the horizontal direction to centre shifting Dynamic, the rolling member 423 of the right-hand member of the first block 421 is withstood in the groove 422a of the left end of upper fixture body 422, now tubing 7 and plate It is in contact between material 6.Then, the first regulating element 464 is adjusted according to the compression force value of test requirements document, so as to drive adjusting screw rod 461 so that Adjusting bolt Adjusting screw 462 drives spring stop 463 to move left and right in the horizontal direction, and then the decrement of adjustment spring 468, I.e. adjustment compresses force value.
Then, the kettle 31 of autoclave 3 is vertically risen and be fixedly connected with kettle cover 31, formed it into closed Environmental chamber, provides high-temperature high pressure water or steam ambient into autoclave 3 by high temperature high pressure water circulation system, passes through actuator The stress state and high temperature that 51 continuous exciting work just can carry out the loading device 5 in fretting wear experiment, process of the test are high The environmental Kuznets Curves state of water circulation system is pressed to carry out instant monitoring and record by monitoring and control recording system.
To sum up, high-temperature high pressure water of the invention or steam ambient fretting wear experiment testing machine, the testing machine can be simulated Micro-displacement amplitude is carried out under the conditions of nuclear power station one, secondary circuit temperature, pressure and water chemistry, compared with high vibration frequency fine motion friction mill Damage test;The way of contact that the testing machine can enter between line slip wear test or impact wear test, friction pair can be point, Line, face contact, measurement can obtain the coefficient of friction and the coefficient of waste between friction pair;The perpendicularity of testing machine, levelness side Just adjust, it is ensured that the axiality and perpendicularity of loading device 5;The rational deployment of each part, it is ensured that the load of the testing machine With displacement loading effectively, reliably;The control of load and measurement accuracy are high, can quantitatively obtain the frictional force between friction pair.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention The equivalent change or modification that Spirit Essence is made, should all be included within the scope of the present invention.

Claims (8)

1. a kind of high-temperature high pressure water or steam ambient fretting apparatus, for the first work under high-temperature high pressure water or steam ambient Fretting wear experiment between part and second workpiece, it is characterised in that the testing machine includes:
Frame;
Autoclave, including kettle and kettle cover, the kettle can be engaged with the kettle cover and form a closed environmental chamber, The kettle is liftably located in the frame with least one part in kettle cover;
Fixture, the fixture is located in the environmental chamber, and the fixture at least includes being used to mutually be fixedly connected with the kettle cover Fixture mount, the first clamp assemblies for clamping first workpiece, for clamp the second workpiece second clamping Component, first workpiece is in contact in the horizontal direction with the second workpiece, and first clamp assemblies at least can including one The upper fixture body of up and down motion, first workpiece is fixedly mounted on the upper fixture body, and the fixture also includes being used for There is provided first workpiece with the second workpiece holding down assembly along horizontal left and right directions thrust;
Wherein, first clamp assemblies are at least also located in the fixture mount in which can move in left-right direction including one First block, second clamp assemblies at least include one can move in left-right direction in the fixture mount the Two blocks, the second workpiece is regularly in contact located at the side of second block and with first workpiece, and described the One block is located at the different both sides of the upper fixture body with first workpiece respectively, and first block is kept out in the horizontal direction It is described to hold down assembly between first block and second block on the upper fixture body;It is described to hold down assembly Including can be mutually threadedly coupled around the adjusting screw rod of Pivot Point Center line rotatably on first block, with the adjusting screw rod And can relatively described adjusting screw rod side-to-side movement Adjusting bolt Adjusting screw on the adjusting screw rod, mutually consolidate with the Adjusting bolt Adjusting screw Surely the spring stop connected, the support spiral shell being located on second block with extending in left-right direction and can move in left-right direction Bar, the end of the studdle can be kept out on the spring stop or on the Adjusting bolt Adjusting screw in the horizontal direction, described Holding down assembly also includes extension in left-right direction and the spring lever of one end regularly on second block, the spring lever The other end be provided with locating part, be additionally provided between the locating part and the spring stop for providing along the spring lever axle To the flexible member of thrust,
Loading device, including can be located in the frame and above the autoclave to relatively described kettle cover oscilaltion Actuator, the displacement transducer for being fixedly arranged on the actuator upper end, the load transducer for being fixedly arranged on the actuator lower end, upper end It is connected to the connecting shaft of the load transducer, lower end and passes through the kettle cover and the balance being fixedly connected with the upper fixture body phase Axle, the upper end of the balance shaft is mutually fixedly connected with the lower end of the connecting shaft;
The testing machine also includes being used to provide the environmental chamber of the autoclave with high-temperature high pressure water or steam ambient High temperature high pressure water circulation system, the stress state for monitoring and recording the loading device and the high-temperature high pressure water cyclic system The monitoring and control recording system of the environmental Kuznets Curves state of system.
2. high-temperature high pressure water according to claim 1 or steam ambient fretting apparatus, it is characterised in that:The kettle Body includes the metal body with inner chamber, is regularly located at the kettle that the metal body upper end is used to be connected with the kettle cover Week on the inside of flange, the heating mantle for being wrapped in the metal body and kettle flange outside week portion, the metal body upper end Portion has the concave station to lower recess, and the lower end of the kettle cover has boss that is downwardly projecting and being engaged with the concave station, The autoclave is also included located at the sealing ring between the kettle and the kettle cover, when the kettle cover is engaged with the kettle When, the boss is engaged with the concave station, and the sealing ring is regularly pressed between the boss and the concave station.
3. high-temperature high pressure water according to claim 1 or steam ambient fretting apparatus, it is characterised in that:It is described to make Dynamic device is electromagnetic exciting actuator, and institute's displacement sensors, the load transducer are in the equal position of upper and lower ends of the actuator In the center position of the actuator, the upper end of the connecting shaft connects by the way that universal joint and the load transducer are mutually fixed Connect.
4. high-temperature high pressure water according to claim 1 or steam ambient fretting apparatus, it is characterised in that:The machine Frame includes being used to install the lower bearing bracket body of the autoclave, the upper spider body for installing the loading device,
The lower bearing bracket body includes lower support plate, the middle supporting for the kettle cover to be fixedly mounted that relative ground is fixedly installed Plate, for be connected with the upper spider body phase upper bearing plate, regularly located at the lower support plate and the middle support plate it Between and vertically extend many support posts, regularly be located between the upper bearing plate and the middle support plate and edge The many supporting upright posts and adjusting post of vertical direction extension, the kettle are liftably located therein a support post On;
The upper spider body includes the sill that is fixed on the upper bearing plate, lower end and is fixed on the sill two ends Two guide upright posts, entablature regularly located at two guide upright post tops, oscilaltion located at being led described in two To the middle cross beam between column, the actuator is fixedly mounted on wherein the middle cross beam, the guide upright post and wherein the middle cross The locking mechanism for both to be locked is additionally provided between beam.
5. high-temperature high pressure water according to claim 1 or steam ambient fretting apparatus, it is characterised in that:It is described flat Weighing apparatus axle is can realize the pressure self-balancing tensile axis of the applied extension force self-balancing in the autoclave, and the pressure self-balancing is drawn Stretch axle and be connected setting with the kettle cover dynamic sealing.
6. high-temperature high pressure water according to claim 1 or steam ambient fretting apparatus, it is characterised in that:The bullet The guide through hole for being available for the spring lever to pass axially through is offered on spring baffle plate, the locating part is located at the spring lever along axle To on the other end for passing the guide through hole, the flexible member is the spring being set on the spring lever, described The two ends of spring are kept out on the locating part and the spring stop respectively, are fixedly provided with the fixture mount spacing Block, the limited block is located at the phase heterodoxy of the spring lever, the limited block in the fixture mount with second block On offer limiting through hole, the spring lever passes axially through the limiting through hole, and the locating part is located at the limiting through hole Outside.
7. high-temperature high pressure water according to claim 1 or steam ambient fretting apparatus, it is characterised in that:The folder Tool also includes the lower clamp body regularly in the fixture mount, and the left and right ends of the lower clamp body are respectively fixedly set Have and be oriented to for providing when first block is moved in left-right direction with spacing the first limit assembly, for providing described the It is oriented to when two blocks are moved in left-right direction and the second spacing limit assembly,
First limit assembly include vertically extend two the first height blocks, extend along the longitudinal direction and be fixed on First fixation clip of the upper end of the first height block described in two, the first height block described in two is located at before first block respectively Both sides, form first and are oriented to and lead to afterwards between the lower clamp body and first fixation clip and two the first height blocks There is the first stopper, first stopper can be located in side-to-side movement first guide channel on road, first block In;
Second limit assembly include vertically extend two the second height blocks, extend along the longitudinal direction and be fixed on Second fixation clip of the second height block upper end described in two, two the second height blocks are located at before second block respectively Both sides, form second and are oriented to and lead to afterwards between the lower clamp body and second fixation clip and two the second height blocks There is the second stopper, second stopper can be located in side-to-side movement second guide channel on road, second block In.
8. high-temperature high pressure water according to claim 1 or steam ambient fretting apparatus, it is characterised in that:Described One workpiece is sheet material, and the second workpiece is tubing, and point, line or face are formed between the sheet material and the tubing and is contacted, and institute The position contacted between sheet material and the tubing is stated to be located on the central axis of the connecting shaft and the balance shaft.
CN201510394910.7A 2015-07-07 2015-07-07 High-temperature high pressure water or steam ambient fretting apparatus CN104914042B (en)

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CN105606527A (en) * 2015-11-19 2016-05-25 苏州热工研究院有限公司 Test method applicable to measurement of static friction coefficient of engineering components
CN105403467B (en) * 2015-12-21 2019-03-22 郑州大学 It splits to draw in testing machine and high temperature in concrete material high temperature and splits drawing test method
CN107025315B (en) * 2016-02-02 2020-10-23 上海核工程研究设计院 Nuclear power station U-shaped heat transfer pipe flow-induced vibration and fretting wear coupling analysis and calculation method
CN105866023B (en) * 2016-03-30 2018-06-12 苏州热工研究院有限公司 Material confficient of static friction test method in a kind of high temperature and pressure water environment
CN108918314B (en) * 2018-08-17 2021-03-16 西南交通大学 Impact wear test device capable of simulating sand grains and high-temperature complex environment
CN111693243A (en) * 2020-06-24 2020-09-22 西南交通大学 High-temperature high-pressure multiphase flow impact fretting damage testing system and implementation method thereof

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CN104374661A (en) * 2014-11-28 2015-02-25 中国科学院金属研究所 High-temperature high-pressure in-situ composite fretting test device
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CN202886185U (en) * 2012-09-21 2013-04-17 苏州热工研究院有限公司 Clamping device for pipe-plate line contact fretting wear test
CN104359778A (en) * 2014-10-23 2015-02-18 中国科学院金属研究所 High temperature and high pressure in-situ fretting wear test device
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