CN210166255U - Tangential fretting wear test clamp for rigid convex body of nuclear power fuel cladding tube and grillwork - Google Patents
Tangential fretting wear test clamp for rigid convex body of nuclear power fuel cladding tube and grillwork Download PDFInfo
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- CN210166255U CN210166255U CN201920577707.7U CN201920577707U CN210166255U CN 210166255 U CN210166255 U CN 210166255U CN 201920577707 U CN201920577707 U CN 201920577707U CN 210166255 U CN210166255 U CN 210166255U
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- 238000005253 cladding Methods 0.000 title claims abstract description 177
- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 239000000446 fuel Substances 0.000 title claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims description 70
- 230000033001 locomotion Effects 0.000 claims description 12
- 238000013461 design Methods 0.000 claims description 6
- 230000003044 adaptive effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 21
- 229910000831 Steel Inorganic materials 0.000 description 25
- 239000010959 steel Substances 0.000 description 25
- 238000000034 method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model relates to a fretting wear field specifically is a tangential fretting wear test anchor clamps in nuclear power fuel cladding pipe and the rigid convex body high temperature high pressure water of framework. This anchor clamps mainly include: the device comprises a rigid convex body sample fixing block, a rigid convex body sample fastening stud, a rigid convex body sample fixing block clamp, a clamp fixing plate, a clamp fixing support, a cladding tube fixing base, an arc-shaped clamping block and the like. Embedding the rigid-convex body sample into a rigid-convex body sample fixing block, locking the rigid-convex body sample by using a fastening stud, embedding the fixing block into a groove at the lower part of a fixture of the rigid-convex body sample fixing block, fixing the fixture of the rigid-convex body sample fixing block on a fixture fixing plate by using a fastening screw, and installing the fixing plate on a fixture fixing support to realize the fixation of the rigid-convex body sample. The utility model is used for the tangential fretting wear test of pressurized water reactor nuclear power fuel cladding pipe and the rigid convex body of framework in a high temperature high pressure return circuit aquatic, simple structure, convenient operation, low cost.
Description
Technical Field
The utility model relates to a fretting wear field specifically is a tangential fretting wear test anchor clamps of nuclear power fuel cladding pipe and grillage rigid convex body high temperature high pressure aquatic for the tangential fretting wear test of pressurized water reactor nuclear power fuel cladding pipe and the rigid convex body of grillage in high temperature high pressure return circuit aquatic.
Background
In a pressurized water reactor, fuel rod elements are clamped in a fuel assembly by friction between their cladding and grids. When the reactor is in operation, coolant flows over the fuel rod cladding tube surface, causing the fuel rods to vibrate. This flow-induced vibration is one of the most significant causes of fretting between the fuel rod cladding tube and the lattice. The radioactivity of the nuclear power loop side media can increase suddenly, endanger the safety of each loop of the reactor and possibly cause serious consequences. Therefore, the fretting wear behavior of the zirconium alloy cladding tube is deeply understood, and the fretting wear rate and the fretting damage model are obtained, so that the method has important engineering significance for performance evaluation and service life estimation of the cladding tube, and is beneficial to safe operation of a nuclear power station. In the laboratory simulation of high-temperature and high-pressure primary loop water, the research on fretting wear of the fuel cladding tube is an effective means for researching the failure mechanism of the cladding tube, but the existing clamp design cannot meet the test requirements. Firstly, the rigid bosses and the fuel cladding have small dimensions, and the conventional clamp is difficult to clamp; secondly, the environment of high-temperature and high-pressure water (200-360 ℃, 4-20 MPa) is harsh, and the corrosion resistance of the clamp cannot be guaranteed. Therefore, the development of the clamp which can be used in a high-temperature and high-pressure primary circuit water environment and can stably and reliably clamp the rigid convex body sample and the cladding tube sample is the first problem to be solved for the research on the fretting wear of the cladding tube under high-temperature and high-pressure water.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a tangential fretting wear test anchor clamps in nuclear power fuel cladding pipe and the rigid convex body high temperature high pressure aquatic of framework can be arranged in the high temperature high pressure loop water environment and can the firm convex body sample of reliable and stable centre gripping and cladding pipe sample, realizes the fretting wear research of cladding pipe at the high temperature high pressure water.
The technical scheme of the utility model as follows:
a nuclear power fuel cladding tube and grid frame rigid convex body tangential fretting wear test fixture is characterized in that the upper part and the lower part of a cladding tube sample respectively correspond to: the device comprises a rigid convex body sample and a cladding tube fixing base, wherein the cladding tube sample is arranged on the cladding tube fixing base, and the corresponding contact surface of the cladding tube fixing base and the bottom of the cladding tube sample is designed in an arc-shaped adaptive manner; the bottom of the inner side of the cladding tube sample is provided with an arc-shaped clamping block, the corresponding contact surface of the arc-shaped clamping block and the cladding tube sample is in arc-shaped adaptive design, and a fastening screw II sequentially penetrates through the arc-shaped clamping block and the cladding tube sample to be fixed on a cladding tube fixing base; the cladding tube fixing base is arranged on the longitudinal shaft transmission rod through a fastening nut IV, and the cladding tube sample and the cladding tube fixing base are connected with the longitudinal shaft transmission rod through the fastening nut IV; the corresponding contact surface of the top of the rigid convex body sample and the top of the cladding tube sample is a plane, and the cladding tube sample is arranged on a fixture for a rigid convex body sample fixing block;
the left side and the right side of the cladding tube sample respectively correspond to a baffle II and a baffle I, the baffle II and the baffle I are respectively installed on two sides of a cladding tube fixing base through fastening screws I, and the baffle II and the baffle I are transversely and tightly combined through the fastening screws I; the left side of the cladding tube sample is connected with a cross shaft left side transmission rod through a baffle II, a connecting stud II and respective fastening nuts, the right side of the cladding tube sample is connected with the cross shaft right side transmission rod through the baffle I, the connecting stud I and respective fastening nuts are fixed on the connecting stud I through fastening nuts III, the baffle I is fixed on the connecting stud II through fastening nuts, the connecting stud II and the cross shaft left side transmission rod are tightly connected and fixed through stud fastening nuts, and the connecting stud I and the cross shaft right side transmission rod are tightly connected and fixed through stud fastening nuts.
The clamp for the tangential fretting wear test of the nuclear power fuel cladding tube and the grid rigid convex body is characterized in that a rigid convex body sample is of a sheet structure with the middle part protruding downwards, the rigid convex body sample is embedded into a rigid convex body sample fixing block, the rigid convex body sample fixing block is of a groove-shaped structure with an opening at the bottom, the part, protruding downwards, of the rigid convex body sample is located on the outer side of the opening at the bottom of the rigid convex body sample fixing block, and a rigid convex body sample fastening stud I and a rigid convex body sample fastening stud II which are arranged oppositely are used for fastening to form a whole; a rigid convex body sample fixing block for mounting a rigid convex body sample is embedded into a T-shaped groove at the lower part of a fixture of the rigid convex body sample fixing block, holes are formed in two sides of the T-shaped groove, one side of the T-shaped groove is provided with a unthreaded hole, and the other side of the T-shaped groove is provided with a threaded hole; and the fastening screw III penetrates through the unthreaded hole on one side of the T-shaped groove and is matched with the threaded hole on the other side of the T-shaped groove, and the rigid-convex sample fixing block is clamped through the deformation of two sides of the T-shaped groove during fastening.
The clamp for the tangential fretting wear test of the nuclear power fuel cladding tube and the grid rigid convex body is characterized in that the middle of the clamp for the rigid convex body sample fixing block is a cylinder with a square cross section, and the upper part of the clamp for the rigid convex body sample fixing block is a threaded column; the fastening nut is sleeved on the threaded column of the rigid convex sample fixing block clamp through a top opening, the fastening nut is buckled on the outer sides of the limiting nut and the cylinder through the lower groove cover, and the cylinder is connected with the fastening nut through threads; the clamp for the rigid convex sample fixing block penetrates through a square hole in the middle of the clamp fixing plate, the limiting nut is suspended at a certain position of the threaded column, the lower groove-shaped fastening nut with a hole formed in the top is matched and fastened with a cylinder with external threads processed at the top of the clamp fixing plate, the rigid convex sample fixing block is fixed in a mode of pressing the limiting nut, and the height of the rigid convex sample is adjusted by changing the position of the limiting nut in the threaded column.
The tangential fretting wear test fixture for the nuclear power fuel cladding tube and the grid rigid convex body is characterized in that a plurality of unthreaded holes are machined on the periphery of a fixture fixing plate, 4 fixture fixing supports are installed at the bottom of an autoclave, the fixture fixing plate is installed on the fixture fixing supports through the 4 unthreaded holes on the fixture fixing plate, a fastening nut II is installed on the part, penetrating out of the fixture fixing plate, of the fixture fixing supports, the fixture fixing plate and the fixture fixing supports are fastened through the fastening nut II, and the mounting of a rigid convex body sample is realized.
The clamp for the tangential fretting wear test of the nuclear power fuel cladding tube and the grid rigid convex body is characterized in that threaded holes are formed in the periphery of the inner bottom of the high-pressure kettle, threads are machined at the bottom end of a clamp fixing support, and the clamp fixing support is connected with the inner bottom of the high-pressure kettle through the threads, so that the fixing of the fixing support is realized.
The clamp for the tangential fretting wear test of the nuclear power fuel cladding tube and the grid frame rigid convex body is characterized in that a threaded hole is formed in one end face of a transmission rod on the right side of a transverse shaft, one end face of a transmission rod on the left side of the transverse shaft and the side face of a baffle, the threaded holes are connected through a connecting stud II and a connecting stud I, and the threaded holes are fastened through four fastening nuts III; the other end of the transmission rod on the right side of the transverse shaft is connected with a vibration exciter, and the relative motion of the test sample of the cladding tube and the test sample of the rigid convex body is realized through the vibration of the transverse shaft.
The clamp for the tangential fretting wear test of the nuclear power fuel cladding tube and the grid rigid convex body is characterized in that a cladding tube sample is placed in a concave arc-shaped area at the upper part of a cladding tube fixing base, an arc-shaped clamping block with a unthreaded hole in the middle is placed in the cladding tube sample, a threaded hole is formed in the middle of a concave arc surface at the upper part of the cladding tube fixing base, and a fastening screw II penetrates through the arc-shaped clamping block with the unthreaded hole and the cladding tube sample with the unthreaded hole to be connected and locked with the threaded hole in the middle of the concave arc surface of the base, so that the cladding tube sample is fastened.
The clamp for the tangential fretting wear test of the nuclear power fuel cladding tube and the grid rigid convex body is characterized in that a threaded hole is formed in the side surface of a cladding tube fixing base, and a baffle plate II and a baffle plate I are connected with the cladding tube fixing base through a fastening screw I; the unthreaded hole at the bottom of the cladding tube fixing base is aligned to the top of the longitudinal shaft transmission rod and is placed on the longitudinal shaft transmission rod, and the height of the cladding tube fixing base is adjusted through a fastening nut IV; the lower part of the longitudinal shaft transmission rod is connected with a motor, and the normal load is applied through the movement of the longitudinal shaft transmission rod.
According to the tangential fretting wear test clamp for the nuclear power fuel cladding tube and the grid rigid convex body, the cladding tube fixing base is connected with the longitudinal shaft transmission rod through the unthreaded hole, and a gap exists between the cladding tube fixing base and the longitudinal shaft transmission rod, so that the cladding tube sample can vibrate left and right.
The tangential fretting wear test fixture for the nuclear power fuel cladding tube and the grid rigid convex body comprises the following use methods:
(1) embedding the rigid convex body sample into an opening on the lower side of the groove of the rigid convex body sample fixing block, and fastening by using a fastening stud I and a fastening stud II to realize the fixation of the rigid convex body sample;
(2) embedding the rigid convex sample fixing block into a T-shaped groove at the lower part of a fixture of the rigid convex sample fixing block, and clamping and fixing the rigid convex sample fixing block by using a fastening screw III to realize the fixation of the rigid convex sample fixing block;
(3) after the fixture for the rigid convex sample fixing block penetrates through the fixture fixing plate, a limiting nut is installed, and then the fixture for the rigid convex sample fixing block is fixed by adopting a fastening nut I;
(4) mounting a fixture for the sample fixing block of the rigid convex body on a cylinder at the center of the top of a fixture fixing support, and fastening by using a fastening nut II to realize the fixation of the sample of the rigid convex body;
(5) placing a cladding tube sample on a cladding tube fixing base, placing an arc-shaped clamping block with a vertical unthreaded hole in the middle inside the cladding tube sample, opening a threaded hole in the middle of an inner arc surface of the cladding tube fixing base, and connecting and locking a fastening screw II with the threaded hole in the middle of the inner arc surface of the cladding tube fixing base through the arc-shaped clamping block with the unthreaded hole and the cladding tube sample with the unthreaded hole;
(6) the side surface of the cladding tube fixing base is provided with a threaded hole, and the baffle I is connected with the cladding tube fixing base through a fastening screw I;
(7) aligning a unthreaded hole at the bottom of the cladding tube fixing base with the top of the longitudinal shaft transmission rod, placing the unthreaded hole on the longitudinal shaft transmission rod, and adjusting the height of the unthreaded hole through a fastening nut IV; the lower part of the longitudinal shaft transmission rod is connected with a motor, and a normal load is applied through the movement of the longitudinal shaft transmission rod;
(8) the end surface of the transmission rod on the right side of the transverse shaft, the baffle I, the end surface of the transmission rod on the left side of the transverse shaft and the side surface of the baffle II are all provided with threaded holes, the end surface of the transmission rod on the right side of the transverse shaft and the baffle I are connected through a connecting stud I, and the end surface of the transmission rod on the left side of the transverse shaft and the baffle II are connected through a connecting stud II and; the other end of the transmission rod on the right side of the transverse shaft is connected with a vibration exciter, and the relative motion of the cladding tube sample and the rigid convex body sample is realized through the vibration of the transverse shaft;
(9) closing the autoclave, connecting a circulating water loop, adjusting the temperature, the pressure and the water chemistry, and performing a fretting wear test after all set parameters are stable.
The utility model has the advantages and beneficial effects that:
1. the utility model discloses a high temperature and high pressure water fretting wear anchor clamps each part adopts high temperature and high pressure water corrosion resistant and the better 304 or 316L austenitic stainless steel of high temperature strength to process, and high temperature and high pressure water corrosion resistant, high temperature strength is also higher, can reliably use in high temperature and high pressure water environment for a long time.
2. The utility model discloses an use the firm convex body fixed block, can realize the fastening centre gripping to the firm convex body sample of small-size, design benefit, easy operation is convenient.
3. The utility model discloses a convex base, circular-arc clamp splice and fastening screw can realize fixed, design benefit, easy operation is convenient to the cladding tube sample.
4. The utility model discloses in no matter be cladding tube unable adjustment base's height or just protruding body sample fixed block anchor clamps highly all can adjust through stop nut.
Drawings
FIGS. 1(a) - (b) are schematic diagrams of the shape of a steel convex sample. In FIG. 1(a), the front view and the plan view of FIG. 1(b), the length of the entire sample was 13mm and the width was 5 mm.
Fig. 2 is an assembly view of a steel lug sample and a steel lug sample fixing block.
Fig. 3-4 are the overall assembly structure diagram of the present invention. Fig. 3 is a front view, and fig. 4 is a sectional view taken along line a-a of fig. 3.
In FIGS. 1-4, 1 is a rigid convex body sample; 2, fixing a sample block of a rigid convex body; 3 fastening a stud I on the rigid convex sample; 4, fastening a stud II on the sample of the rigid convex body; 5, a fixture for a sample fixing block of the rigid convex body; 6, fastening a nut I; 7, a limit nut; 8, fastening a nut II; 9 fixing the clamp plate; 10, fixing a bracket by a clamp; 11 horizontal axis right transmission rod; 12 connecting a stud I; 13 fastening a nut III; 14 fastening the screw I; 15 baffle I; 16 cladding tube fixing bases; 17 fastening a nut IV; 18 longitudinal axis drive rod; 19 fastening screw II; 20 baffle II; 21 connecting a stud II; 22 cladding tube samples; 23 horizontal axis left side transmission rod; 24 arc-shaped clamping blocks; 25 fastening screw III; 26 a cylinder; 27 autoclave bottom.
Detailed Description
In the concrete implementation process, the utility model discloses tangential fretting wear test anchor clamps in nuclear power fuel cladding pipe and the rigid convex body high temperature high pressure water of framework mainly include: the device comprises a rigid convex body sample fixing block, a rigid convex body sample fastening stud, a rigid convex body sample fixing block clamp, a clamp fixing plate, a clamp fixing support, a cladding tube fixing base, an arc-shaped clamping block and the like. Embedding the rigid-convex body sample into a rigid-convex body sample fixing block, locking the rigid-convex body sample by using a fastening stud, embedding the fixing block into an opening at the lower part of a fixture groove of the rigid-convex body sample fixing block, fixing the rigid-convex body sample fixing block fixture by using a fastening screw, fixing the rigid-convex body sample fixing block fixture on a fixture fixing plate, and installing the fixing plate on a fixture fixing support to realize the fixation of the rigid-convex body sample. Placing a cladding tube sample on a cladding tube fixing base, and fixing the cladding tube through a fastening screw and an arc-shaped clamping block; the base is connected with a longitudinal shaft transmission rod through a fixing nut, the lower part of the longitudinal shaft transmission rod is connected with a motor, and a normal load is applied through the movement of a longitudinal shaft rod; the base is connected with the cross shaft transmission rod through the baffle, the connecting stud, the fastening screw and the fastening nut, one end of the cross shaft is connected with the vibration exciter, and relative movement between the cladding tube and the steel convex body sample is realized through vibration of the cross shaft.
As shown in fig. 1-4, the tangential fretting wear test fixture for high-temperature and high-pressure water of the rigid convex body of the nuclear power fuel cladding tube and the grillwork of the utility model mainly comprises: the steel convex body test piece comprises a steel convex body test piece 1, a steel convex body test piece fixing block 2, a steel convex body test piece fastening stud I3, a steel convex body test piece fastening stud II4, a steel convex body test piece fixing block clamp 5, a fastening nut I6, a limiting nut 7, a fastening nut II8, a clamp fixing plate 9, a clamp fixing support 10, a transverse shaft right side transmission rod 11, a connecting stud I12, a fastening nut III13, a fastening screw I14, a baffle I15, an enclosure tube fixing base 16, a fastening nut IV17, a longitudinal shaft transmission rod 18, a fastening screw II19, a baffle II20, a connecting stud II 21, an enclosure tube test piece 22, a transverse shaft left side transmission rod 23, an arc-shaped clamping block 24, a fastening screw III 25 and the like, and the:
the steel convex body sample 1 is of a sheet structure with a downward convex middle part, the steel convex body sample 1 is embedded into the steel convex body sample fixing block 2, the steel convex body sample fixing block 2 is of a groove-shaped structure with an opening at the bottom, the downward convex part of the steel convex body sample 1 is positioned on the outer side of the opening at the bottom of the steel convex body sample fixing block 2, a steel convex body sample fastening stud I3 and a steel convex body sample fastening stud II4 which are oppositely arranged are adopted for fastening, and the height of the steel convex body sample fastening stud I3 is not higher than that of the steel convex body sample 1 fixing block, so that the steel convex body sample fixing block and the steel convex body sample fixing block are. And embedding the rigid convex body sample fixing block 2 with the rigid convex body sample 1 installed into the T-shaped groove at the lower part of the rigid convex body sample fixing block clamp 5. Holes are formed in two sides of the T-shaped groove, a unthreaded hole is formed in one side of the T-shaped groove, and a threaded hole is formed in the other side of the T-shaped groove. And the fastening screw III 25 penetrates through the unthreaded hole on one side of the T-shaped groove and is matched with the threaded hole on the other side of the T-shaped groove, and the rigid convex sample fixing block 2 is clamped through the deformation of two sides of the T-shaped groove during fastening.
The middle part of the fixture 5 for the sample fixing block of the rigid convex body is a cylinder with a square cross section, and the upper part of the fixture 5 for the sample fixing block of the rigid convex body is a threaded column. The fastening nut 6 is sleeved on the threaded column of the rigid convex sample fixing block clamp 5 through a top opening, the fastening nut 6 is buckled on the outer sides of the limiting nut 7 and the cylinder 26 through the lower groove cover, and the cylinder 26 is in threaded connection with the fastening nut 6. After the rigid convex sample fixing block clamp 5 passes through the square hole in the middle of the clamp fixing plate 9, the limiting nut 7 is suspended at a certain position of the threaded column, then the lower groove-shaped fastening nut 6 with a hole formed in the top is matched and fastened with the cylinder 26 with the external thread processed on the top of the clamp fixing plate 9, and the rigid convex sample fixing block clamp 5 is fixed in a mode of pressing the limiting nut 7. The height of the steel stud sample 1 can be adjusted by changing the position of the stop nut 7 in the threaded column.
Processing has 4 unthreaded holes around anchor clamps fixed plate 9, and 4 anchor clamps fixed bolster 10 are installed to the autoclave bottom, and anchor clamps fixed plate 9 is installed on anchor clamps fixed bolster 10 through 4 unthreaded holes on it, and anchor clamps fixed bolster 10 wears out the partial installation fastening nut II8 of anchor clamps fixed plate 9, and anchor clamps fixed plate 9 fastens with anchor clamps fixed bolster 10 with fastening nut II8, realizes the installation of just protruding body sample 1. Threaded holes are formed in the periphery of the autoclave bottom 27, threads are machined in the bottom end of the fixture fixing support 10, and the fixture fixing support 10 is connected with the autoclave bottom 27 through the threads to achieve fixing of the fixing support.
The upper and lower sides of the cladding tube sample 22 correspond to: the device comprises a rigid convex body sample 1 and a cladding tube fixing base 16, wherein a cladding tube sample 22 is arranged on the cladding tube fixing base 16, and the corresponding contact surface of the cladding tube fixing base 16 and the bottom of the cladding tube sample 22 is designed in an arc-shaped matching manner; the arc-shaped clamping block 24 is arranged at the bottom of the inner side of the cladding tube sample 22, the contact surface of the arc-shaped clamping block 24 corresponding to the cladding tube sample 22 is in arc-shaped adaptive design, and the fastening screw II19 sequentially penetrates through the arc-shaped clamping block 24 and the cladding tube sample 22 to be fixed on the cladding tube fixing base 16, so that the fastening effect can be achieved, and the levelness can be ensured. The cladding tube fixing base 16 is mounted on the longitudinal shaft transmission rod 18 through a fastening nut IV17, and the cladding tube sample 22 and the cladding tube fixing base 16 are connected with the longitudinal shaft transmission rod 18 through the fastening nut IV 17. The corresponding contact surface of the top of the rigid convex body sample 1 and the top of the cladding tube sample 22 is a plane, and the cladding tube sample 22 is arranged on the rigid convex body sample fixing block clamp 5. The cladding tube fixing base 16 and the longitudinal shaft transmission rod 18 are connected through a unthreaded hole, a certain gap exists between the cladding tube fixing base 16 and the longitudinal shaft transmission rod 18, so that the cladding tube sample 22 can vibrate left and right, and the fastening nut IV17 mainly plays a limiting role.
Placing a cladding tube sample 22 in a concave arc area at the upper part of a cladding tube fixing base 16, placing an arc-shaped clamping block 24 with a unthreaded hole in the middle inside the cladding tube sample 22, forming a threaded hole in the middle of a concave arc surface at the upper part of the cladding tube fixing base 16, and connecting and locking a fastening screw II19 through the arc-shaped clamping block 24 with the unthreaded hole and the cladding tube sample 22 with the unthreaded hole with the threaded hole in the middle of the concave arc surface of the base to realize the fastening of the cladding tube sample 22.
The left side and the right side of the cladding tube sample 22 respectively correspond to the baffle II20 and the baffle I15, the baffle II20 and the baffle I15 are respectively installed on two sides of the cladding tube fixing base 16 through the fastening screws I14, and the baffle II20 and the baffle I15 are transversely and tightly combined through the fastening screws I14, so that the balance of the cladding tube sample is kept. The left side of the cladding tube sample 22 is connected with a connecting stud II 21 and respective fastening nuts through a baffle II20 and a transverse shaft left side transmission rod 23, the right side of the cladding tube sample 22 is connected with a connecting stud I12 and respective fastening nuts through a baffle I15 and a transverse shaft right side transmission rod 11, the baffle II20 is fixed on the connecting stud I12 through a fastening nut III13, the baffle I15 is fixed on the connecting stud II 21 through a fastening nut, the connecting stud II 21 and the transverse shaft left side transmission rod 23 are tightly connected and fixed through a stud fastening nut, the connecting stud I12 and the transverse shaft right side transmission rod 11 are tightly connected and fixed through a stud fastening nut, the levelness of the whole transverse shaft can be ensured to be on the same horizontal line, and the cladding tube sample is in a completely horizontal state in the whole experiment process. When the baffles on the two sides of the cladding tube fixing base 16 are installed, the fastening screw I14 and the fastening nut III13 must be fastened in a time division manner to ensure that the transverse shaft transmission rod is in a horizontal state.
The side surface of the cladding tube fixing base 16 is provided with a threaded hole, and a left baffle plate and a right baffle plate (a baffle plate II20 and a baffle plate I15) are connected with the cladding tube fixing base 16 through fastening screws I14; aligning the unthreaded hole at the bottom of the cladding tube fixing base 16 with the top of the longitudinal shaft transmission rod 18, placing the unthreaded hole on the longitudinal shaft transmission rod 18, and adjusting the height of the unthreaded hole by fastening a nut IV 17; the lower portion of the longitudinal axis drive link 18 is connected to a motor to apply a normal load by movement of the longitudinal axis drive link 18.
One end face of the transverse shaft right side transmission rod 11, one end face of the transverse shaft left side transmission rod 23 and the side face of the baffle plate 15 are all provided with threaded holes, are connected through a left connecting stud and a right connecting stud (a connecting stud II 21 and a connecting stud I12), and are fastened through four fastening nuts III 13; the other end of the right transmission rod 11 of the transverse shaft is connected with a vibration exciter, and the relative movement of the cladding tube sample 22 and the rigid convex body sample 1 is realized through the vibration of the transverse shaft.
The utility model discloses in, the size of just protruding body sample fixed block 2 is decided by the concrete size of just protruding body sample 1, and the length direction size of recess is just protruding body sample 1's length, and recess bottom open-ended high dimension is for being less than just protruding body sample 1's thickness. For example, in the examples, the length of the steel projection sample 1 was 13mm, and the thickness of the steel projection sample 1 was 0.5 mm.
The utility model discloses in, the diameter of the concave arc district on cladding tube unable adjustment base 16 upper portion is the external diameter of cladding tube sample 22, and the diameter of circular-arc clamp splice 24 is the internal diameter of cladding tube sample 22, and the concave arc district on cladding tube unable adjustment base 16 upper portion and circular-arc clamp splice 24's clearance are the wall thickness of cladding tube sample. For example, in an embodiment, the jacket tube sample has an outer diameter of 9.5mm and a wall thickness of 0.6 mm.
The utility model discloses nuclear power fuel cladding pipe and grillwork just protruding body tangential fretting wear test anchor clamps's application method as follows:
(1) embedding the rigid convex body sample 1 into an opening on the lower side of a groove of a rigid convex body sample fixing block 2, and fastening by using a fastening stud I3 and a fastening stud II4 to realize the fixation of the rigid convex body sample 1;
(2) embedding the rigid convex sample fixing block 2 into a T-shaped groove at the lower part of the rigid convex sample fixing block clamp 5, and clamping and fixing by using a fastening screw III 25 to realize the fixation of the rigid convex sample fixing block 2;
(3) after the rigid convex sample fixing block clamp 5 penetrates through the clamp fixing plate 9, a limiting nut 7 is installed, and then the rigid convex sample fixing block clamp 5 is fixed by adopting a fastening nut I6;
(4) mounting the rigid convex sample fixing block clamp 5 on a cylinder 26 at the center of the top of a clamp fixing support 10, and fastening by using a fastening nut II8 to realize the fixation of a rigid convex sample 1;
(5) placing a cladding tube sample 22 on a cladding tube fixing base 16, placing an arc-shaped clamping block 24 with a vertical unthreaded hole in the middle inside the cladding tube sample 22, forming a threaded hole in the middle of an arc surface on the inner side of the cladding tube fixing base 16, and connecting and locking a fastening screw II19 with the threaded hole in the middle of the arc surface on the inner side of the cladding tube fixing base 16 through the arc-shaped clamping block 24 with the unthreaded hole and the cladding tube sample 22 with the unthreaded hole;
(6) the side surface of the cladding tube fixing base 16 is provided with a threaded hole, and the baffle plate I15 is connected with the cladding tube fixing base 16 through a fastening screw I14;
(7) aligning the unthreaded hole at the bottom of the cladding tube fixing base 16 with the top of the longitudinal shaft transmission rod 18, placing the unthreaded hole on the longitudinal shaft transmission rod 18, and adjusting the height of the unthreaded hole by fastening a nut IV 17; the lower part of the longitudinal shaft transmission rod 18 is connected with a motor, and a normal load is applied through the movement of the longitudinal shaft transmission rod 18;
(8) the end face of the transverse shaft right side transmission rod 11, the baffle I15, the end face of the transverse shaft left side transmission rod 23 and the side face of the baffle II20 are all provided with threaded holes, the end face of the transverse shaft right side transmission rod 11 and the baffle I15 are connected through a connecting stud I12, the end face of the transverse shaft left side transmission rod 23 and the baffle II20 are connected through a connecting stud II 21 and fastened through a fastening nut III 13; the other end of the transverse shaft right transmission rod 11 is connected with a vibration exciter, and relative movement of the cladding tube sample 22 and the rigid convex body sample 1 is realized through vibration of the transverse shaft.
(9) Closing the autoclave, connecting a circulating water loop, adjusting the temperature, the pressure and the water chemistry, and performing the fretting wear test after all the set parameters are stable.
The embodiment result shows, the utility model discloses in anchor clamps mainly used autoclave, carry out the fretting wear test under the high temperature and high pressure water environment, simple structure, convenient operation, low cost.
Claims (9)
1. The tangential fretting wear test fixture for the nuclear power fuel cladding tube and the grid rigid convex body is characterized in that the upper part and the lower part of a cladding tube sample respectively correspond to the following parts: the device comprises a rigid convex body sample and a cladding tube fixing base, wherein the cladding tube sample is arranged on the cladding tube fixing base, and the corresponding contact surface of the cladding tube fixing base and the bottom of the cladding tube sample is designed in an arc-shaped adaptive manner; the bottom of the inner side of the cladding tube sample is provided with an arc-shaped clamping block, the corresponding contact surface of the arc-shaped clamping block and the cladding tube sample is in arc-shaped adaptive design, and a fastening screw II sequentially penetrates through the arc-shaped clamping block and the cladding tube sample to be fixed on a cladding tube fixing base; the cladding tube fixing base is arranged on the longitudinal shaft transmission rod through a fastening nut IV, and the cladding tube sample and the cladding tube fixing base are connected with the longitudinal shaft transmission rod through the fastening nut IV; the corresponding contact surface of the top of the rigid convex body sample and the top of the cladding tube sample is a plane, and the cladding tube sample is arranged on a fixture for a rigid convex body sample fixing block;
the left side and the right side of the cladding tube sample respectively correspond to a baffle II and a baffle I, the baffle II and the baffle I are respectively installed on two sides of a cladding tube fixing base through fastening screws I, and the baffle II and the baffle I are transversely and tightly combined through the fastening screws I; the left side of the cladding tube sample is connected with a cross shaft left side transmission rod through a baffle II, a connecting stud II and respective fastening nuts, the right side of the cladding tube sample is connected with the cross shaft right side transmission rod through the baffle I, the connecting stud I and respective fastening nuts are fixed on the connecting stud I through fastening nuts III, the baffle I is fixed on the connecting stud II through fastening nuts, the connecting stud II and the cross shaft left side transmission rod are tightly connected and fixed through stud fastening nuts, and the connecting stud I and the cross shaft right side transmission rod are tightly connected and fixed through stud fastening nuts.
2. The tangential fretting wear test fixture for the nuclear power fuel cladding tube and the grid rigid-convex body as claimed in claim 1, wherein the rigid-convex body sample is of a sheet structure with a downward-protruding middle part, the rigid-convex body sample is embedded into a rigid-convex body sample fixing block, the rigid-convex body sample fixing block is of a groove-shaped structure with an opening at the bottom, the downward-protruding part of the rigid-convex body sample is positioned outside the opening at the bottom of the rigid-convex body sample fixing block, and the rigid-convex body sample fastening stud I and the rigid-convex body sample fastening stud II which are arranged oppositely are used for fastening to form a whole; a rigid convex body sample fixing block for mounting a rigid convex body sample is embedded into a T-shaped groove at the lower part of a fixture of the rigid convex body sample fixing block, holes are formed in two sides of the T-shaped groove, one side of the T-shaped groove is provided with a unthreaded hole, and the other side of the T-shaped groove is provided with a threaded hole; and the fastening screw III penetrates through the unthreaded hole on one side of the T-shaped groove and is matched with the threaded hole on the other side of the T-shaped groove, and the rigid-convex sample fixing block is clamped through the deformation of two sides of the T-shaped groove during fastening.
3. The nuclear power fuel cladding tube and grid rigid convex body tangential fretting wear test clamp as claimed in claim 1, wherein the middle part of the rigid convex body sample fixing block clamp is a cylinder with a square cross section, and the upper part of the rigid convex body sample fixing block clamp is a threaded column; the fastening nut is sleeved on the threaded column of the rigid convex sample fixing block clamp through a top opening, the fastening nut is buckled on the outer sides of the limiting nut and the cylinder through the lower groove cover, and the cylinder is connected with the fastening nut through threads; the clamp for the rigid convex sample fixing block penetrates through a square hole in the middle of the clamp fixing plate, the limiting nut is suspended at a certain position of the threaded column, the lower groove-shaped fastening nut with a hole formed in the top is matched and fastened with a cylinder with external threads processed at the top of the clamp fixing plate, the rigid convex sample fixing block is fixed in a mode of pressing the limiting nut, and the height of the rigid convex sample is adjusted by changing the position of the limiting nut in the threaded column.
4. The tangential fretting wear test fixture for the nuclear power fuel cladding tube and the grid rigid protrusion according to claim 3, wherein a plurality of unthreaded holes are formed in the periphery of the fixture fixing plate, 4 fixture fixing supports are installed at the bottom of the autoclave, the fixture fixing plate is installed on the fixture fixing supports through the 4 unthreaded holes in the fixture fixing plate, a fastening nut II is installed on the part, penetrating out of the fixture fixing plate, of the fixture fixing supports, and the fixture fixing plate and the fixture fixing supports are fastened through the fastening nut II to realize the installation of the rigid protrusion sample.
5. The clamp for the tangential fretting wear test of the nuclear power fuel cladding tube and the grid rigid convex body is characterized in that threaded holes are formed in the periphery of the inner bottom of the high-pressure kettle, threads are machined in the bottom end of the clamp fixing support, and the clamp fixing support is connected with the inner bottom of the high-pressure kettle through the threads to achieve fixing of the fixing support.
6. The tangential fretting wear test fixture for the nuclear power fuel cladding tube and the grid rigid convex body as claimed in claim 1, wherein a threaded hole is formed in one end face of the transverse shaft right side transmission rod, one end face of the transverse shaft left side transmission rod and the side face of the baffle, the threaded holes are connected through a connecting stud II and a connecting stud I, and the threaded holes are fastened through four fastening nuts III; the other end of the transmission rod on the right side of the transverse shaft is connected with a vibration exciter, and the relative motion of the test sample of the cladding tube and the test sample of the rigid convex body is realized through the vibration of the transverse shaft.
7. The clamp for the tangential fretting wear test of the nuclear power fuel cladding tube and the grid rigid convex body is characterized in that a cladding tube sample is placed in a concave arc-shaped area at the upper part of a cladding tube fixing base, an arc-shaped clamping block with a unthreaded hole in the middle is placed in the cladding tube sample, a threaded hole is formed in the middle of the concave arc surface at the upper part of the cladding tube fixing base, and a fastening screw II penetrates through the arc-shaped clamping block with the unthreaded hole, the cladding tube sample with the unthreaded hole and the threaded hole in the middle of the concave arc surface of the base to be connected and locked, so that the cladding tube sample is fastened.
8. The tangential fretting wear test fixture for the nuclear power fuel cladding tube and the grid rigid convex body as claimed in claim 1, wherein a threaded hole is formed in the side surface of the cladding tube fixing base, and the baffle plate II and the baffle plate I are connected with the cladding tube fixing base through a fastening screw I; the unthreaded hole at the bottom of the cladding tube fixing base is aligned to the top of the longitudinal shaft transmission rod and is placed on the longitudinal shaft transmission rod, and the height of the cladding tube fixing base is adjusted through a fastening nut IV; the lower part of the longitudinal shaft transmission rod is connected with a motor, and the normal load is applied through the movement of the longitudinal shaft transmission rod.
9. The tangential fretting wear test fixture for the nuclear power fuel cladding tube and the grid rigid convex body as claimed in claim 1, wherein the cladding tube fixing base is connected with the longitudinal shaft transmission rod through a unthreaded hole, and a gap exists between the cladding tube fixing base and the longitudinal shaft transmission rod so as to realize left-right vibration of the cladding tube sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920577707.7U CN210166255U (en) | 2019-04-25 | 2019-04-25 | Tangential fretting wear test clamp for rigid convex body of nuclear power fuel cladding tube and grillwork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920577707.7U CN210166255U (en) | 2019-04-25 | 2019-04-25 | Tangential fretting wear test clamp for rigid convex body of nuclear power fuel cladding tube and grillwork |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210166255U true CN210166255U (en) | 2020-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920577707.7U Expired - Fee Related CN210166255U (en) | 2019-04-25 | 2019-04-25 | Tangential fretting wear test clamp for rigid convex body of nuclear power fuel cladding tube and grillwork |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210166255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912777A (en) * | 2020-07-15 | 2020-11-10 | 中国核动力研究设计院 | Sample fixing device for high-temperature and high-pressure electrochemical experiment and mounting method thereof |
-
2019
- 2019-04-25 CN CN201920577707.7U patent/CN210166255U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912777A (en) * | 2020-07-15 | 2020-11-10 | 中国核动力研究设计院 | Sample fixing device for high-temperature and high-pressure electrochemical experiment and mounting method thereof |
| CN111912777B (en) * | 2020-07-15 | 2022-03-01 | 中国核动力研究设计院 | Sample fixing device for high-temperature and high-pressure electrochemical experiment and mounting method thereof |
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Granted publication date: 20200320 |