CN218601078U

CN218601078U - Composite fretting wear test device used in liquid lead bismuth environment

Info

Publication number: CN218601078U
Application number: CN202221336075.3U
Authority: CN
Inventors: 杨中燕; 张小康; 张青; 王庆东; 付旺旺
Original assignee: Shanghai Cor Force Stress Corrosion Testing Equipment Co ltd
Current assignee: Shanghai Cor Force Stress Corrosion Testing Equipment Co ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2023-03-10
Anticipated expiration: 2032-05-31

Abstract

The utility model discloses a compound fine motion wear test device that is used for under liquid lead bismuth environment includes: the device comprises a rack and a test main body arranged on the rack; the test main body comprises a kettle body, a kettle cover and a driving device, wherein the kettle body and the kettle cover form a closed chamber for providing a composite fretting wear test scene. The loading connecting shaft penetrates through the kettle body in the first direction; the first loading shaft penetrates through the left side of the kettle body in the second direction; and the second loading shaft penetrates through the right side of the kettle body in the second direction. In a working state, the driving device is used for driving the loading connecting shaft to drive the first sample to reciprocate at high frequency along a first direction, and is used for driving the first loading shaft and the second loading shaft to respectively drive the second sample and the third sample to reciprocate at high frequency along a second direction; and the first sample, the second sample and the third sample are matched with each other and collided to carry out fretting wear test. The structure is simple, the appearance is attractive, the occupied space is small, the cost is low, the operation is convenient, and the phenomenon of force leakage caused by manual loading in the operation of equipment is prevented.

Description

Composite fretting wear test device used in liquid lead bismuth environment

Technical Field

The utility model belongs to stress corrosion material research field especially relates to a compound fine motion wear test device that is used for under liquid lead bismuth environment.

Background

In practical application, a composite type abrasion is generated between metal surfaces which are mutually pressed due to small-amplitude vibration, the composite type abrasion can cause the function failure of parts and components over time, and particularly, along with the development of science and technology, the requirements of advanced industries such as nuclear power, aerospace and the like in China on the research of fretting abrasion of materials are increasingly outstanding.

In the prior art, a composite fretting wear test device in a high-temperature and high-pressure water environment exists, the device mainly simulates fretting wear between a zirconium pipe and a fixing frame in a pressurized water reactor, similarly, a lead bismuth reactor also has a similar fretting wear problem to be researched, and at present, no fretting wear device in a liquid lead bismuth environment exists in the market. The fretting wear under the liquid lead bismuth environment has the problem that high-temperature lead bismuth is solidified when meeting condensation, the fretting wear equipment under the conventional water environment has no axial sealing element at high temperature, and the bellows seal cannot be used under the high-frequency working condition, so that the structure of the fretting wear equipment under the conventional water environment is difficult to be directly applied to the liquid lead bismuth environment, and the fretting wear test under the liquid lead bismuth environment is a great difficulty.

In addition, in the existing composite fretting wear equipment, one end of the radial impact direction is driven by a hydraulic cylinder, and the other end of the radial impact direction adopts a hand wheel force application mode; in addition, the sample clamp and the sample loading shaft are designed on the same horizontal plane, and the technical problem of the test under the liquid metal environment cannot be realized by the structure.

SUMMERY OF THE UTILITY MODEL

The technical purpose of the utility model is to provide a compound fine motion wear test device for under liquid lead bismuth environment to be difficult to measure the wearing and tearing problem of intermetallic compound pattern in solving liquid lead bismuth environment.

In order to solve the above problem, the technical scheme of the utility model is that:

a compound fretting wear test device for under liquid lead bismuth environment includes: the device comprises a rack and a test main body arranged on the rack; the experimental main part includes the cauldron body, kettle cover and drive arrangement, and the cauldron body forms an airtight chamber with the kettle cover for provide compound fretting wear test scene, experimental main part still includes:

the loading connecting shaft penetrates through the kettle body in the first direction, a first type fixture is arranged on the part, located in the cavity, of the loading connecting shaft, and clamping positions are arranged on two sides of the first type fixture and used for clamping a first sample;

the first loading shaft penetrates through the left side of the kettle body in the second direction, a second type clamp is installed at one end, located in the cavity, of the first loading shaft, and the second type clamp is provided with a clamping position for clamping a second sample;

the second loading shaft penetrates through the right side of the kettle body in the second direction, a third-type clamp is installed at one end, located in the cavity, of the second loading shaft, and the third-type clamp is provided with a clamping position tool for clamping a third sample;

the loading connecting shaft, the first loading shaft and the second loading shaft are positioned on the same horizontal plane, and clamping positions of the first type clamp, the second type clamp and the third type clamp are all positioned below the loading connecting shaft;

under the working state of the composite fretting wear test device used in the liquid lead bismuth environment, the driving device is used for driving the loading connecting shaft to drive the first sample to do high-frequency reciprocating motion along the first direction and driving the first loading shaft and the second loading shaft to respectively drive the second sample and the third sample to do high-frequency reciprocating motion along the second direction; and the first sample, the second sample and the third sample are matched with each other and collided to carry out a fretting wear test.

In the same horizontal plane, the first direction is a vertical direction, the second direction is perpendicular to the first direction, the first sample, the second sample and the third sample do high-frequency reciprocating motion in the vertical direction, and high-frequency periodic impact is achieved in the horizontal direction.

Wherein, four through-holes of evenly distributed around the cauldron body, the loading is linked the axle and is run through the through-hole of the cauldron body along first direction, and first loading axle runs through the left side through-hole of the cauldron body, and second loading axle runs through the right side through-hole of the cauldron body, and first loading axle and second loading axle are coaxial to be set up.

Further preferably, force sensors are connected to the two ends of the loading connecting shaft, and the force sensors are connected to the ends, far away from the kettle body, of the first loading shaft and the second loading shaft respectively.

Further preferably, the other end of the force sensor is connected with a connecting shaft, and the other end of the connecting shaft is connected with the driving device; the driving device comprises a hydraulic cylinder and a hydraulic rod, two ends of the hydraulic rod are respectively connected with the other ends of the hydraulic cylinder and the connecting shaft, and the hydraulic cylinder is used for providing reciprocating motion power for the connecting shaft through the hydraulic rod.

Further preferably, the device also comprises a shaft supporting seat, a fixed seat and a guide device;

the shaft support seats are respectively arranged on the arrangement paths of the loading connecting shaft, the first loading shaft and are used for respectively fixing the loading connecting shaft, the first loading shaft, the corresponding force sensor and the corresponding connecting shaft; the fixed seat is used for fixing the connecting shaft; the guide device is installed on the fixing base and is in sliding connection with the corresponding connecting shaft, and the guide device is used for guiding and preventing rotation.

Further preferably, the device further comprises a cold water jacket, wherein the cold water jacket is arranged at the force sensor, the loading connecting shaft, the first loading shaft and the second loading shaft and is positioned at the outer part of the kettle body to play a role in cooling protection.

Further preferably, a crucible is further arranged in the kettle body, is positioned below the horizontal plane of the loading connecting shaft and is used for containing liquid lead and bismuth.

Further preferably, the device also comprises a heating furnace, wherein the kettle body is arranged in the heating furnace and is continuously heated in the working state of the composite fretting wear test device used in the liquid lead bismuth environment;

four through holes are uniformly distributed around the heating furnace, the loading connecting shaft penetrates through the through holes of the heating furnace along a first direction, the first loading shaft penetrates through the left through hole of the heating furnace, and the second loading shaft penetrates through the right through hole of the heating furnace.

Further preferably, the measuring device further comprises a measuring assembly, wherein the measuring assembly comprises a fixing piece, a measuring rod and an LVDT displacement sensor; the mounting is installed on the first type of anchor clamps, and the measuring stick of installation is followed to each centre gripping in mounting both ends, and the measuring stick cooperation corresponding LVDT displacement sensor who connects is used for measuring the removal amplitude of cauldron internal sample.

Specifically, the frame comprises a front part frame, a main frame and a rear part frame; the front part rack and the rear part rack are respectively arranged on the front side and the rear side of the main rack, and a rack connecting block is arranged at the joint; the stand also comprises a beam, a stand column and a host panel, wherein the beam and the stand column are used for forming a frame of the stand, the upper end of the stand column is connected with the host panel, and the host panel is used for placing a test main body; the lower ends of the upright posts are connected with one ends of at least two cross beams, and the cross beams are connected with at least two other adjacent cross beams; and a heavy foot cup is arranged below the cross beam, is arranged on the corresponding upright post extension line and is used for changing the height of the rack.

Further preferably, the device also comprises a lead bismuth circulating pump, wherein the lead bismuth circulating pump is connected with a bottom pipeline passing through the kettle body and is used for continuously and circularly flowing the liquid lead bismuth in the composite fretting wear test device under the working liquid lead bismuth environment.

Further preferably, the lead bismuth smelting device further comprises a smelting kettle, and the smelting kettle is used for smelting the lead bismuth into liquid and then sending the liquid into the kettle body.

Further preferably, the device also comprises a gas control loop, wherein the gas control loop can be respectively connected with the inside of the kettle body and the pipeline of the melting kettle and is used for deoxidizing the liquid lead bismuth.

Further preferably, the kettle cover opening device comprises an optical shaft and a fixing frame, a flange nut is mounted at one end of the optical shaft and used for fixing the optical shaft on the rack, a guide sleeve is sleeved on the optical shaft, and the fixing frame is arranged on one side of the optical shaft through the guide sleeve; the other end of the optical axis is provided with a bearing, the bearing is also connected with the fixed frame, the side wall of the fixed frame is provided with a rotating handle, and the rotating handle and the bearing are mutually matched for enabling the fixed frame to rotate around the optical axis;

the kettle cover opening device further comprises a support fixed on the upper portion of the fixing frame, an electric push rod in the vertical direction is mounted on the support, a hoisting piece is mounted at the other end of the electric push rod, and the electric push rod is controlled by a button switch to lift and drive the hoisting piece to pull the kettle cover to be opened and closed.

The utility model discloses owing to adopt above technical scheme, make it compare with prior art and have following advantage and positive effect:

1) The utility model discloses a frame adopts the mosaic structure of horizontal cross, and the mode that the host computer panel was placed to the higher authority constitutes jointly, and frame bottom each angle department adopts 12 heavy foot cups to adjust holistic frame height and levelness, and simple structure is pleasing to the eye, and in addition, cross structure makes things convenient for operating personnel to be close to experiment cauldron operating surface more, makes the operation more convenient.

2) The utility model discloses a drive loading form has adopted the independent drive respectively of two different pneumatic cylinders in the second direction, and this kind of mode has avoided adopting the pneumatic cylinder on the radial direction of existing equipment, and another radial direction adopts manual loading, has solved the phenomenon that the power leakage appears in the manual loaded one side of radial direction along with the operation of equipment can appear. The hydraulic cylinder is also selected for driving in the first direction, the frequency of the hydraulic cylinder can reach 200Hz, the test requirement is met, the occupied space is small, in addition, different hydraulic cylinders can share the same hydraulic source, the cost is saved, and meanwhile, the occupied space of the whole equipment is also reduced.

3) The utility model discloses the anchor clamps adopt the formula of sinking structure to stretch to the position that is lower than the drive shaft horizontal plane with sample anchor clamps position and arrange, can immerse the sample anchor clamps completely like this within the internal lead bismuth liquid level of cauldron, and loading axle and loading even axle can not touch lead bismuth, so set up the drive loading that can realize the liquid metal environment.

4) The utility model discloses a lead bismuth circulating pump independent of experimental main part, and the circulation that realizes liquid lead bismuth between the cauldron body, this mode has ensured that the internal liquid lead bismuth circulation of cauldron flows, has improved deoxidization efficiency in the internal liquid lead bismuth of cauldron on the one hand, and on the other hand takes out the cauldron external and filtration with corrosion products in the cauldron body, has guaranteed that the internal liquid lead bismuth parameter of cauldron satisfies experimental required requirement all the time.

5) The utility model discloses the cauldron body adopts the design of independent intercommunication separately with melting the cauldron, and the cauldron is internal to install anchor clamps, does not have solid-state lead bismuth molten space in it, adopts the mode that melting the cauldron and be independent of outside experimental main part, has solved solid-state lead bismuth molten problem ingeniously, melts the cauldron in addition and also can carry out the deoxidization operation in advance, and liquid lead bismuth after the deoxidization reenters the cauldron internal energy and reduces the corrosion problem of the internal each spare part of cauldron in advance.

6) The utility model discloses be provided with kettle cover opening device, kettle cover opening device can rise the kettle cover by the automatic rising of control button control electric putter, makes the operation more laborsaving convenient, also can operate the handle simultaneously and change the kettle cover to other positions of the cauldron body top, has made things convenient for the operator to look over the internal situation of cauldron, has stopped the operation and has been hindered the risk.

7) The utility model discloses the experiment cauldron part adopts the cauldron body and the nested mode in crucible both sides, and liquid lead bismuth directly holds in the crucible, can guarantee that the cauldron body can not corroded by liquid lead bismuth, has improved the life of experiment cauldron, and the crucible can conveniently be changed, and after the crucible is become invalid by the medium corrosion, directly change again can, crucible simple structure, the cost ratio is lower, greatly reduced later stage equipment maintenance's cost.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.

FIG. 1 is an overall structure diagram of the composite fretting wear test device used in the liquid lead bismuth environment of the present invention;

FIG. 2 is a flow chart of the composite fretting wear test device of the present invention implemented in a liquid lead bismuth environment;

fig. 3 is a schematic structural view of the test main body of the present invention;

FIG. 4 is a structural view of the frame of the present invention;

FIG. 5 is a top view structural diagram of the test main body of the present invention;

FIG. 6 is a top view structural diagram of the kettle body of the present invention;

FIG. 7 is a sectional view of the kettle of the present invention;

fig. 8 is a structural diagram of the kettle cover opening device of the utility model.

Description of the reference numerals

1: a test device host; 11: a frame; 1101: a front part frame; 1102: heavy cup; 1103: a main frame; 1104: a host panel; 1105: a rear part frame; 1106: a frame connecting block; 12: a test subject; 1201: a first hydraulic cylinder; 1202: a first fixed seat; 1203: a first connecting shaft; 1204: a first force sensor; 1205: a first loading shaft; 1206: a first cold water jacket; 1207: a second cold water jacket; 1208: a second hydraulic cylinder; 1209: a second fixed seat; 1210: a second connecting shaft; 1211: a second force sensor; 1212: a third cold water jacket; 1213: a third loading shaft; 1214: a fourth cold water jacket; 1215: a shaft support seat; 1216: a second loading shaft; 1217: a fifth cold water jacket; 1218: a third force sensor; 1219: a sixth cold water jacket; 1220: a third connecting shaft; 1221: a third fixed seat; 1222: a third hydraulic cylinder; 1223: a shaft support seat; 1224: a fourth loading shaft; 1225: a seventh cold water jacket; 1226: a fourth force sensor; 1227: an eighth cold water jacket; 1228: a fourth connecting shaft; 1229: a guide device; 1230: a fourth fixed seat; 1231: heating furnace; 1232: a kettle body; 1233: a crucible; 1234: a first measuring rod; 1235: a first LVDT assembly; 1236: a second LVDT assembly; 1237: a second measuring rod; 1238: a fixing member; 1239: a first annular sample; 1240: a first sheet sample; 1241: a second sheet-like test piece; 1242: a second annular sample; 13: a kettle cover opening device; 1301: a flange nut; 1302: a first guide sleeve; 1303: an optical axis; 1304: a fixed mount; 1305: a second guide sleeve; 1306: a guide sleeve seat; 1307: a bearing; 1308: a protective cover; 1309: a first support member; 1310: a supporting beam; 1311: a second support member; 1312: an electric push rod; 1313: a handle; 1314: hoisting a piece; 2: a lead bismuth circulating pump; 3: a melting kettle; 4: a gas control loop.

Detailed Description

In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "a" means not only "only one of this but also a case of" more than one ".

The composite fretting wear test device for use in the liquid lead bismuth environment according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims.

Examples

Referring to fig. 1, the present embodiment provides a composite fretting wear test device used in a liquid lead bismuth environment, which mainly comprises four parts, a test device main unit 1, a lead bismuth circulating pump 2, a melting kettle 3, and a gas control loop 4. The test device main unit 1 is a core part of this embodiment, and the fretting wear test working condition in the high-temperature lead bismuth environment is simulated in the kettle body 1232 of the test device main unit 1, and the test device main unit 1 will be described in detail later. The lead bismuth circulating pump 2 is used for continuously circulating and flowing the liquid lead bismuth in the embodiment under the working state, two intercommunicating pipelines are connected between the lead bismuth circulating pump 2 and the kettle body 1232, the inner cavity of the lead bismuth circulating pump 2 and the crucible 1233 in the kettle body 1232 are positioned on the same horizontal plane, and one of the intercommunicating pipelines is ensured to be in a long-distance communication state, so that the inner cavity of the lead bismuth circulating pump 2 and the liquid lead bismuth liquid level in the crucible 1233 can be positioned at the same position under the same pressure. After the lead bismuth circulating pump 2 is operated, the liquid lead bismuth in the lead bismuth circulating pump 2 is transferred into the crucible 1233 through another communicating pipeline, and after the transfer, along with the rise of the liquid level in the crucible 1233, the liquid lead bismuth in the crucible 1233 flows back into the inner cavity of the lead bismuth circulating pump 2 from the first communicating pipeline, so that the liquid lead bismuth in the kettle body 1232 can be ensured to be in a circulating state all the time. Before the test, the melting kettle 3 melts the lead bismuth spindle which is solid at normal temperature into liquid, and then feeds the liquid into the kettle body 1232. The gas control loop 4 performs an operation of removing oxygen from the liquid lead bismuth in the melting kettle 3, and after the removal of oxygen is completed, since the same communicating pipeline is provided between the melting kettle 3 and the kettle body 1232, the liquid lead bismuth after the removal of oxygen is transferred to the kettle body 1232 by introducing gas into the melting kettle 3 and pressurizing.

Referring to fig. 2, for the above-mentioned parts, the implementation of the present embodiment will be briefly discussed, and the lead bismuth ingot put into the inner cavity of the melting kettle 3 is first heated and melted into a liquid state by using the melting kettle. The gas control loop 4 is used to deoxygenate the lead bismuth prior to the introduction of the liquid lead bismuth into the still 1232. Then, the liquid lead bismuth is transferred from the melting kettle 3 to the crucible 1233 in the kettle body 1232, and then the lead bismuth circulating pump 2 is started to circulate the lead bismuth in the kettle body 1232 between the lead bismuth circulating pump 2 and the kettle body 1232. The gas control loop 4 may be used to further deoxygenate the lead bismuth in the kettle 1232 during the recirculation flow to reduce the oxygen content to the target value. And then, starting the test device main machine 1 to start a fretting wear test, testing the sample placed in the kettle body 1232, returning the liquid lead bismuth to the melting kettle 3 after the test is finished, closing the embodiment and taking out the sample, and performing wear evaluation on the sample to obtain the wear condition of the sample in the lead bismuth environment.

Referring to fig. 3 to 8, the testing apparatus main body 1 will now be described, the testing apparatus main body 1 can be divided into three parts, namely a frame 11, a testing main body 12 and a kettle cover opening device 13, and the frame 11 provides a stable placing platform for the testing main body 12 and the kettle cover opening device 13. The test main body 12 is a core part of the implementation and is responsible for micro-motion loading of the sample and simulation of a high-temperature lead bismuth environment. The kettle cover opening device 13 is a lifting device for the kettle cover, and after a test is completed, the kettle cover is automatically lifted, lifted and opened through button control by the electric push rod 1312.

Referring to fig. 4, the rack 11 of the present embodiment, specifically, includes a front part rack 1101, a main frame 1103, and a rear part rack 1105. The main frame 1103 can be divided into three sections, which are a first section of sub-frame, a second section of sub-frame and a third section of sub-frame, wherein the first section of sub-frame and the third section of sub-frame are used for placing the second fixing base 1209 and the fourth fixing base 1230 of the main test body 12, and a through hole structure is provided in the second section of sub-frame for placing the heating furnace 1231. The front part rack 1101 and the rear part rack are respectively installed on the front side and the rear side of the main rack 1103, specifically, on the front side and the rear side of the second section of sub-rack, and a rack connection block 1106 is installed at the connection position, and the rack 11 is in a cross structure from a top view. The rack 11 further comprises a beam, a column and a host panel 1104, wherein the beam and the column are used for forming an integral framework of the rack 11, the host panel 1104 is placed at the upper end of the column, and the test main body 12 is placed on the upper end face of the host panel 1104. The lower extreme of stand is connected with the one end of two piece at least crossbeams, and the crossbeam is connected with two other adjacent crossbeams at least. Heavy foot cup 1102 is installed to the crossbeam below, and heavy foot cup 1102 sets up on corresponding stand extension line for change the frame height, accessible cooperation is adjusted the height assurance frame 11 of heavy foot cup 1102 and is kept the level, has 12 heavy foot cups 1102 in the common connection of this embodiment.

Referring to fig. 5, in the present embodiment, the testing main body 12 includes a kettle body 1232, a kettle cover and a driving device, wherein the kettle body 1232 and the kettle cover form a closed chamber for providing a composite fretting test scenario. The test body 12 includes: the loading connecting shaft penetrates through the kettle body 1232 in the first direction, a first type sample clamp is installed on the part, located in the closed cavity, of the loading connecting shaft, and clamping positions are arranged on two sides of the first type sample clamp and used for clamping a first sample. First loading axle 1205 runs through the left side setting of the cauldron body along the second direction, and second style anchor clamps are installed to the one end that first loading axle 1205 is located the cavity, and second style anchor clamps are equipped with the centre gripping position and are used for pressing from both sides dress second sample. And a second loading shaft 1216 also penetrates through the right side of the kettle body along the second direction, and a third-style fixture is mounted at one end, located in the cavity, of the second loading shaft 1216, and is provided with a clamping position tool for clamping a third sample. The loading coupling, the first loading shaft 1205 and the second loading shaft 1216 are located at the same horizontal plane, and the holding positions of the first pattern jig, the second pattern jig and the third pattern jig are located below the loading coupling. Specifically, in the working state of this embodiment, the driving device is configured to drive the loading connecting shaft to drive the first sample to reciprocate at high frequency along the first direction, and is configured to drive the first loading shaft 1205 and the second loading shaft 1216 to drive the second sample and the third sample to reciprocate at high frequency along the second direction, respectively; and the first sample, the second sample and the third sample are matched with each other and collided to carry out fretting wear test. And viewed from a depression angle, the first direction is a vertical direction, the second direction is vertical to the first direction, namely, the horizontal direction, the first sample can be in contact with the second sample and the third sample and does high-frequency reciprocating motion in the vertical direction, and the second sample and the third sample realize high-frequency periodic impact in the horizontal direction.

Referring to fig. 5, 6 and 7, four through holes are uniformly distributed around the autoclave body 1232, the loading connecting shaft penetrates through the through holes of the autoclave body 1232 along the first direction, the first loading shaft 1205 penetrates through the through hole at the left side of the autoclave body 1232, the second loading shaft 1216 penetrates through the through hole at the right side of the autoclave body 1232, and the first loading shaft 1205 and the second loading shaft 1216 are coaxially arranged. Preferably, a crucible 1233 is further disposed in the kettle 1232, and is located below the horizontal plane of the loading connecting shaft, for containing liquid lead bismuth, and the bottom of the crucible is also provided with a through hole connected to two flow pipes communicating with the lead bismuth circulating pump 2. Sealing structures are arranged at the bottoms of the kettle body 1232 and the crucible 1233. Preferably, the heating furnace 1231 is further included, and the kettle body 1232 is disposed in the heating furnace 1231, so that the kettle body 1232 is continuously heated in the operating mode. Similarly, four through holes are uniformly distributed around the heating furnace 1231, the loading connecting shaft penetrates through the through holes of the heating furnace 1231 along the first direction, the first loading shaft 1205 penetrates through the left through hole of the heating furnace 1231, and the second loading shaft 1216 penetrates through the right through hole of the heating furnace 1231.

Referring to fig. 5, the test main body 12 arranged on the front part rack 1101 will be described, wherein one end of the first loading shaft 1205 extends into the kettle 1232, and the other end thereof is connected with one end of the first force sensor 1204, correspondingly, the other end of the first force sensor 1204 is connected with one end of the first connecting shaft 1203, the other end of the first connecting shaft 1203 is connected with the driving device, and the driving device is the first hydraulic cylinder 1201 and the corresponding piston rod. The first fixing seat 1202 and the shaft supporting seat are sequentially arranged on the host panel 1104 from outside to inside, the first hydraulic cylinder 1201 is fixed on the first fixing seat 1202, and a piston rod of the first hydraulic cylinder 1201 is connected with the first connecting shaft 1203 through an anti-rotation guide device. A second cold water jacket 1207 is sleeved outside the first force sensor 1204, the second cold water jacket 1207 is fixed on the first cold water jacket 1206, and the first cold water jacket 1206 is sleeved on the first loading shaft 1205 and fixed on the kettle body 1232 together with the second cold water jacket 1207. The first hydraulic cylinder 1201 provides loading force and displacement in the radial direction, the first hydraulic cylinder 1201 achieves high-frequency reciprocating motion (high-frequency excitation) or maintains the required loading force through a hydraulic servo valve and a controller, the first cold water jacket 1206 and the second cold water jacket 1207 reduce the temperature of the surrounding part together, meanwhile, the first force sensor 1204 is protected from being influenced by high temperature, and the first force sensor 1204 is used for measuring the loading force in real time.

Referring to fig. 5, the test main body 12 disposed on the rear part rack 1105 will be described, and similarly, one end of the second loading shaft 1216 extends into the kettle 1232, and the other end thereof is connected with one end of the third force sensor 1218, and correspondingly, the other end of the third force sensor 1218 is connected with one end of the third connecting shaft 1220, and the other end of the third connecting shaft 1220 is connected with the driving device, which is the third hydraulic cylinder 1222 and the corresponding piston rod. The third fixing seat 1221 and the shaft support seat that set gradually at the host computer panel 1104 from the outside to the inside, the third pneumatic cylinder 1222 are fixed on the third fixing seat 1221, and the piston rod of the third pneumatic cylinder 1222 is connected with the third connecting shaft 1220 through the guider that prevents changeing. A sixth cold water jacket 1219 is sleeved outside the third force sensor 1218, the fifth cold water jacket 1217 is fixed to the sixth cold water jacket 1219, and the fifth cold water jacket 1217 is sleeved on the second loading shaft 1216 and fixed to the kettle 1232 together with the sixth cold water jacket 1219. The third hydraulic cylinder 1222 provides loading force and displacement in the radial direction, the first hydraulic cylinder 1201 realizes high-frequency reciprocating motion (high-frequency excitation) or maintains the required loading force through a hydraulic servo valve and a controller, the fifth cold water jacket 1217 and the sixth cold water jacket 1219 reduce the temperature of the surrounding part together, meanwhile, the third force sensor 1218 is protected from high temperature, and the third force sensor 1218 is used for measuring the magnitude of the loading force in real time.

Referring to fig. 5, the test body 12 disposed on the main frame 1103 will now be described, and the loading coupling is split into the third loading shaft 1213, the fourth loading shaft 1224 and the first type jig for convenience of description. One end of the third loading shaft 1213 is rigidly connected to one end of the fourth loading shaft 1224 via the first pattern clamp. The other end of the third loading shaft 1213 is connected to one end of a second force sensor 1211, the other end of the second force sensor 1211 is connected to one end of a second connecting shaft 1210, the other end of the second connecting shaft 1210 is connected to a driving device, and the driving device is a second hydraulic cylinder 1208 and a corresponding piston rod. The second hydraulic cylinder 1208 is fixed on the second fixing base 1209, and a piston rod of the second hydraulic cylinder 1208 is connected to the second connecting shaft 1210 through an anti-rotation guide device. A third cold water jacket 1212 is sleeved outside the second force sensor 1211, a fourth cold water jacket 1214 is fixed on the third cold water jacket 1212, the fourth cold water jacket 1214 is sleeved on a third loading shaft 1213 and fixed on the kettle body 1232 together with the third cold water jacket 1212, and the shaft support 1215 is used for supporting the third cooling jacket 1212 and the fourth cold water jacket 1214. The other end of the fourth loading shaft 1224 is connected to one end of a fourth force sensor 1226, the other end of the fourth force sensor 1226 is connected to one end of a fourth connecting shaft 1228, and the fourth connecting shaft 1228 is slidably connected to the fourth fixing seat 1230 through an anti-rotation guide device 1229. An eighth cold water jacket 1227 is sleeved outside the fourth force sensor 1226, the seventh cold water jacket 1225 is fixed to the eighth cold water jacket 1227, the seventh cold water jacket 1225 is sleeved on the fourth loading shaft 1224 and fixed to the kettle 1232 together with the eighth cold water jacket 1227, and the shaft support base 1215 is used for supporting the third cooling jacket 1212 and the fourth cold water jacket 1214. The second hydraulic cylinder 1208 provides radial and tangential loading force and displacement, the second hydraulic cylinder 1208 realizes high-frequency reciprocating motion (high-frequency excitation) or maintains the required loading force through a hydraulic servo valve and a controller, the

cold water jackets

1212, 1214, 1225 and 1227 jointly reduce the surrounding temperature, and meanwhile, the second force sensor 1211 and the fourth force sensor 1226 are protected from being influenced by high temperature, and the second force sensor 1211 and the fourth force sensor 1226 are used for measuring the magnitude of the loading force in real time

Referring to fig. 6 and 7, the first loading shaft 1205 extends into the kettle 1232 and is connected to a second sample holder, the second sample holder is connected to a first annular sample 1239, the second loading shaft 1216 also extends into the kettle 1232 and is connected to a third sample holder, the sample holder is connected to a second annular sample 1242, the third loading shaft 1213 and the fourth loading shaft 1224 are respectively fixed to the first sheet 1240 and the second sheet 1241 at two sides of the rigid connection of the first sample holder in the kettle 1232, and the first annular sample 1239 and the second annular sample 1242 are respectively pressed against the first sheet 1240 and the second sheet 1241 by the loading force of the first loading shaft 1205 and the second loading shaft 1216. The third loading shaft 1213 and the fourth loading shaft 1224 reciprocate back and forth under the drive of the second hydraulic cylinder 1208 to complete fretting wear, the first LVDT assembly 1235 and the second LVDT assembly 1236 are respectively fixed on two sides of the kettle body 1232, the first measuring rod 1234 and the second measuring rod 1237 are respectively fixed on two sides of the fixing member 1238, the fixing member 1238 is fixed on the first type clamp, and the displacement of the sample clamp can be measured in real time through the measuring members, so that the data acquisition of tangential loading amplitude is realized.

Referring to fig. 8, preferably, a flange nut 1301 is fixed on a host panel 1104, an optical axis 1303 is connected with one end of the host panel 1104 and fixed with the flange nut 1301, a fixing frame 1304 is sleeved on the optical axis 1303 through a first guide sleeve 1302 and a second guide sleeve 1305, and the other end, i.e., the upper end, of the fixing frame 1304 is tightly fitted at a step on the upper portion of the optical axis 1303 through a bearing 1307, so that the fixing frame 1304 can rotate around the optical axis 1303 through the bearing 1307. Handle 1313 is fixed at the lateral wall of mount 1304, accessible rotates handle 1313 and rotates mount 1304, first support piece 1309, second support piece 1311, supporting beam 1310 make up into the support and fixes the upper portion at mount 1304, safety cover 1308 cover is on the upper portion of kettle cover opening device 13, the motor end hoist and mount of electric putter 1312 are on supporting beam 1310, hoist and mount piece 1314 is fixed on the kettle cover of experiment cauldron 1232, the automatic rising of the kettle cover of experiment cauldron 1232 is controlled through the lift of button switch control electric putter 1312.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made in the present invention, if such changes fall within the scope of the claims and their equivalents, they are still within the scope of the present invention.

Claims

1. A compound fretting wear test device for under liquid lead bismuth environment which characterized in that includes: the device comprises a rack and a test main body arranged on the rack;

the experimental main part includes the cauldron body, kettle cover and drive arrangement, the cauldron body forms an airtight cavity with the kettle cover for provide compound fretting wear test scene, the experimental main part still includes:

the loading connecting shaft penetrates through the kettle body in a first direction, a first type fixture is mounted on the part, located in the cavity, of the loading connecting shaft, and clamping positions are arranged on two sides of the first type fixture and used for clamping a first sample;

the first loading shaft penetrates through the left side of the kettle body in the second direction, a second type clamp is installed at one end, located in the cavity, of the first loading shaft, and a clamping position is arranged on the second type clamp and used for clamping a second sample;

the second loading shaft penetrates through the right side of the kettle body in the second direction, a third-style clamp is mounted at one end, located in the cavity, of the second loading shaft, and the third-style clamp is provided with a clamping position tool for clamping a third sample;

the loading connecting shaft, the first loading shaft and the second loading shaft are positioned on the same horizontal plane, and clamping positions of the first pattern clamp, the second pattern clamp and the third pattern clamp are all positioned below the loading connecting shaft;

under the working state of the composite fretting wear test device used in the liquid lead bismuth environment, the driving device is used for driving the loading connecting shaft to drive the first sample to do high-frequency reciprocating motion along the first direction, and is used for driving the first loading shaft and the second loading shaft to respectively drive the second sample and the third sample to do high-frequency reciprocating motion along the second direction; and the first sample, the second sample and the third sample are matched and collided with each other to carry out fretting wear test.

2. The composite fretting wear test device for the liquid lead-bismuth environment according to claim 1, wherein in the same horizontal plane, the first direction is a vertical direction, the second direction is perpendicular to the first direction, and the first sample, the second sample and the third sample reciprocate at high frequency in the vertical direction to realize high-frequency periodic impact in the horizontal direction.

3. The composite fretting wear test device used in the liquid lead-bismuth environment according to claim 2, wherein four through holes are uniformly distributed around the kettle body, the loading connecting shaft penetrates through the through holes of the kettle body along the first direction, the first loading shaft penetrates through the through holes on the left side of the kettle body, the second loading shaft penetrates through the through holes on the right side of the kettle body, and the first loading shaft and the second loading shaft are coaxially arranged.

4. The composite fretting wear test device used in the liquid lead-bismuth environment according to claim 3, wherein two ends of the loading connecting shaft are connected with force sensors, and one ends of the first loading shaft and the second loading shaft, which are far away from the kettle body, are respectively connected with the force sensors.

5. The composite fretting wear test device used in the liquid lead-bismuth environment according to claim 4, wherein the other end of the force sensor is connected with a connecting shaft, and the other end of the connecting shaft is connected with the driving device;

the driving device comprises a hydraulic cylinder and a hydraulic rod, two ends of the hydraulic rod are respectively connected with the hydraulic cylinder and the other end of the connecting shaft, and the hydraulic cylinder is used for providing reciprocating motion power for the connecting shaft through the hydraulic rod.

6. The composite fretting wear test device for use in the liquid lead-bismuth environment according to claim 5, further comprising a shaft support seat, a fixed seat and a guide device;

the shaft supporting seats are respectively arranged on arrangement paths of the loading connecting shaft, the first loading shaft and are used for respectively fixing the loading connecting shaft, the first loading shaft and the corresponding force sensor and the corresponding connecting shaft;

the fixed seat is used for fixing the connecting shaft;

the guide device is installed on the fixed seat and is connected with the corresponding connecting shaft in a sliding mode for guiding and preventing rotation.

7. The composite fretting wear test device for the liquid lead-bismuth environment according to any one of claims 4 to 6, further comprising a cold water jacket, wherein the cold water jacket is arranged on the force sensor and the loading connecting shaft, and the first loading shaft and the second loading shaft are located at the outer part of the kettle body and used for cooling protection.

8. The composite fretting wear test device for use in the liquid lead-bismuth environment according to claim 7, wherein a crucible is further arranged in the kettle body, and is located below a horizontal plane where the loading connecting shaft is located, and is used for containing the liquid lead-bismuth.

9. The composite fretting wear test device used in the liquid lead bismuth environment according to claim 7, further comprising a heating furnace, wherein the kettle body is arranged in the heating furnace and is continuously heated in the working state of the composite fretting wear test device used in the liquid lead bismuth environment;

four through holes are uniformly distributed around the heating furnace, the loading connecting shaft penetrates through the through holes of the heating furnace in the first direction, the first loading shaft penetrates through the left through hole of the heating furnace, and the second loading shaft penetrates through the right through hole of the heating furnace.

10. The composite fretting wear test device for liquid lead bismuth environments of claim 2, further comprising a measuring assembly, wherein the measuring assembly comprises a fixing member, a measuring rod and an LVDT displacement sensor;

the fixing piece is installed on the first type clamp, measuring rods installed along the first direction are clamped at two ends of the fixing piece respectively, and the measuring rods are matched with the LVDT displacement sensors correspondingly connected and used for measuring the moving amplitude of the sample in the kettle body.

11. The composite fretting wear test device for use in a liquid lead-bismuth environment according to claim 1, wherein the frame comprises a front part frame, a main frame and a rear part frame;

the front part rack and the rear part rack are respectively arranged on the front side and the rear side of the main rack, and a rack connecting block is arranged at the connecting part;

the rack also comprises a cross beam, a stand column and a host panel, wherein the cross beam and the stand column are used for forming a frame of the rack, the upper end of the stand column is connected with the host panel, and the host panel is used for placing a test main body; the lower ends of the upright posts are connected with one ends of at least two cross beams, and the cross beams are connected with at least two other adjacent cross beams; heavy foot cups are arranged below the cross beams, are arranged on the corresponding upright post extension lines and are used for changing the height of the rack.

12. The composite fretting wear test device under the liquid lead bismuth environment of claim 1, further comprising a lead bismuth circulating pump, wherein the lead bismuth circulating pump is connected with a bottom pipeline passing through the kettle body and is used for continuously circulating and flowing the liquid lead bismuth in the composite fretting wear test device under the liquid lead bismuth environment under work.

13. The composite fretting wear test device for use in the liquid lead bismuth environment according to claim 1, further comprising a melting kettle for melting the lead bismuth into a liquid state and then feeding the liquid lead bismuth into the kettle body.

14. The composite fretting wear test device for use in a liquid lead-bismuth environment according to claim 13, further comprising a gas control circuit, wherein the gas control circuit is respectively connectable to the inside of the kettle body and the pipeline of the melting kettle for deoxidizing the liquid lead-bismuth.

15. The composite fretting wear test device used in the liquid lead-bismuth environment according to claim 1, further comprising a kettle cover opening device, wherein the kettle cover opening device comprises an optical axis and a fixing frame, a flange nut is installed at one end of the optical axis and used for fixing the optical axis on the rack, a guide sleeve is sleeved on the optical axis, and the fixing frame is arranged on one side of the optical axis through the guide sleeve; the other end of the optical axis is provided with a bearing, the bearing is further connected with the fixing frame, the side wall of the fixing frame is provided with a rotating handle, and the rotating handle and the bearing are mutually matched for enabling the fixing frame to rotate around the optical axis;

the kettle cover opening device further comprises a support fixed to the upper portion of the fixing frame, an electric push rod in the vertical direction is installed on the support, a hoisting piece is installed at the other end of the electric push rod, the electric push rod goes up and down to drive the hoisting piece to pull the kettle cover to be opened and closed.