A device and method for testing mechanical properties of irradiated materials

Abstract

The present invention relates to the technical field of mechanical property testing equipment, and in particular to a mechanical property testing device and method for irradiated materials, comprising: a test box, a vacuum chamber is provided in the test box, and a mounting platform is provided inside the vacuum chamber; a temperature measuring component is provided in the vacuum chamber; an irradiation component is used to irradiate a test piece; a fixing component includes a clamping mechanism and a hydraulic locking mechanism; a vibration isolation component includes a vibration isolation seat and a shock absorbing push rod; an adjustment component includes a detection mechanism, a conveying mechanism and an adjustment mechanism, the detection mechanism is used to detect the motion state of the load application component, the conveying mechanism is used to convey the hydraulic oil to the hydraulic locking mechanism according to the detection result of the detection mechanism, and the adjustment mechanism is used to adjust the hydraulic oil in the shock absorbing push rod according to the detection result of the detection mechanism. By using the present invention, the impact test result of the test piece is more accurate, which is helpful to evaluate the impact resistance of the irradiated material.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical property testing equipment, and in particular to a mechanical property testing device and method for irradiated materials. Background Art

[0002] With the rapid development of nuclear energy technology and radiation processing technology, the application of irradiated materials has gradually become an important direction in materials science, nuclear engineering and radiation technology research. The mechanical properties of materials in high-energy irradiation environments have a crucial impact on their reliability, life and safety in nuclear reactors, radiation fields and radiation environments. For example, when manufacturing Faraday screens, in order to achieve high-power and long-term steady-state operation, irradiated materials are often used as water-cooling tubes. The long-term stability and mechanical behavior of irradiated materials (such as tungsten copper materials irradiated by low-energy, high-current H and HE plasmas) in high radiation fields determine the operating safety and structural durability of the Faraday screen water-cooling tubes. Therefore, it is very important to test the mechanical properties of irradiated materials before use. There is no device specifically for mechanical property testing of irradiated materials in the prior art. The mechanical property test of irradiated materials needs to be carried out in a vacuum environment. When performing impact performance tests, the test device itself will inevitably be affected by the impact effect, which will cause the components in the test device to loosen over time. At this time, the test device needs to be manually debugged, and the vacuum environment in the vacuum chamber will be destroyed during the debugging. Therefore, a lot of time is required to reconstruct the test environment after each debugging, affecting the test progress. Summary of the invention

[0003] The purpose of the present invention is to provide a device and method for testing the mechanical properties of irradiated materials to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A device for testing mechanical properties of irradiated materials, comprising:

[0006] A test box, wherein a vacuum chamber is provided in the test box, and a mounting platform is provided inside the vacuum chamber;

[0007] An irradiation component, which is disposed on the top of the vacuum chamber and is used to irradiate the specimen;

[0008] A fixing assembly, the fixing assembly is arranged on the mounting table, the fixing assembly comprises a clamping mechanism and a hydraulic locking mechanism, the clamping mechanism is used to clamp and fix the specimen on the mounting table, and the hydraulic locking mechanism is used to lock the clamping mechanism after clamping is completed;

[0009] A load applying assembly, wherein the load applying assembly is used to apply a load to the specimen;

[0010] A vibration isolation assembly, the vibration isolation assembly comprising a vibration isolation seat and a shock absorbing push rod, the vibration isolation seat is arranged at the bottom of the mounting platform, and a plurality of shock absorbing push rods are arranged at the bottom of the vibration isolation seat, and the shock absorbing push rods are used to reduce the impact of vibration on the mounting platform;

[0011] The adjusting assembly includes a detection mechanism, a conveying mechanism and an adjusting mechanism. The detection mechanism is used to detect the motion state of the load applying assembly. The conveying mechanism is used to convey the hydraulic oil to the hydraulic locking mechanism according to the detection result of the detection mechanism. The adjusting mechanism is used to adjust the hydraulic oil in the shock absorbing push rod according to the detection result of the detection mechanism.

[0012] Preferably, the fixing assembly and the load applying assembly are symmetrically arranged on both sides of the vacuum chamber.

[0013] Preferably, the irradiation assembly comprises an ion source irradiator and an irradiation collimator, the ion source irradiator is arranged at the top of the vacuum chamber, and the irradiation collimator is connected to the ion source irradiator.

[0014] Preferably, the clamping mechanism includes a moving motor, a moving screw, a moving block, a clamping plate, a clamping push rod and a clamping claw. The moving motor is arranged on the mounting table, and the moving motor is used to drive the moving screw to rotate. Two moving blocks are provided, and the two moving blocks are symmetrically arranged on both sides of the moving screw. When the moving motor drives the moving screw to rotate, the two moving blocks approach or move away from each other. A clamping plate is provided on one side of the moving block, and a plurality of clamping push rods are arranged around the clamping plate. The clamping push rod is used to drive the clamping claw to move.

[0015] Preferably, the hydraulic locking mechanism includes a distance sensor, a locking push rod and a locking ring, the distance sensor is used to detect the position of the clamp, the locking push rod and the locking ring are arranged in several groups, and the inner diameters of the locking rings are different. According to the detection result of the distance sensor, the locking push rod will drive the corresponding locking ring to lock the position of the clamp.

[0016] Preferably, the load applying assembly comprises a movable push rod and a punch, and the movable push rod is used to drive the punch to apply load to the specimen.

[0017] Preferably, the detection mechanism comprises a position sensor, and the position sensor is arranged on the movable push rod, and the position sensor is used to detect the position of the movable push rod.

[0018] Preferably, the conveying mechanism includes a hydraulic cylinder, a conveying pump, a connecting block and a flow valve. The hydraulic cylinder is arranged in the test box. A conveying pump is arranged inside the hydraulic cylinder. The conveying pump is used to convey the hydraulic oil in the hydraulic cylinder to the connecting block. The connecting block is connected to a plurality of flow valves, and each flow valve is connected to a different locking push rod.

[0019] Preferably, the regulating mechanism further includes a regulating solenoid valve, which is connected to the bottom of the shock absorbing push rod, and is used to regulate the hydraulic oil in the shock absorbing push rod according to the detection result of the position sensor.

[0020] A testing method, based on the above-mentioned irradiated material mechanical properties testing device, comprises the following steps:

[0021] A, clamp the two ends of the specimen by the clamping mechanism;

[0022] B, locking the clamping mechanism through a hydraulic locking mechanism;

[0023] C, setting the applied load value, and then applying the load to the specimen through the load application assembly;

[0024] D. When the load is applied, the detection mechanism detects the position of the moving push rod;

[0025] E. According to the detection result of the detection mechanism, the conveying mechanism and the adjusting mechanism will input the hydraulic oil into the hydraulic locking mechanism and the shock absorbing push rod respectively.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: when the present invention is in use, the movement state of the load applying component is detected by the detection mechanism, and the hydraulic oil in the hydraulic locking mechanism and the shock-absorbing push rod is adjusted according to the movement state of the load applying component, thereby effectively preventing the clamping mechanism from moving or falling off during the impact process, helping to ensure the accurate transmission of the impact force, thereby improving the accuracy and reliability of the test results, and the hydraulic oil injected into the shock-absorbing push rod can absorb and disperse the impact energy, reduce the vibration and impact of the test equipment, help reduce the vibration and noise during the test, thereby improving the precision and accuracy of the test, and by using the present invention, the impact test results of the specimen are more accurate, which is helpful to evaluate the impact resistance of irradiated materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the axial structure of the present invention;

[0028] Figure 2 It is a front view structural schematic diagram of the present invention;

[0029] Figure 3It is a schematic diagram of the connection structure of the ion source irradiator and the irradiation collimator of the present invention;

[0030] Figure 4 This is a schematic diagram of the connection structure of the movable push rod, the punch and the position sensor of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0032] Figure 6 This is a schematic diagram of the connection structure between the clamping push rod and the clamping claw of the present invention;

[0033] Figure 7 It is a schematic diagram of the connection structure of the connection block and the flow valve of the present invention.

[0034] In the figure: 1 test box, 2 mounting table, 3 vibration isolation seat, 4 shock-absorbing push rod, 5 vacuum chamber, 6 ion source irradiator, 7 irradiation collimator, 8 moving motor, 9 moving screw, 10 moving block, 11 clamping plate, 12 clamping push rod, 13 clamping claw, 14 distance sensor, 15 locking push rod, 16 locking ring, 17 moving push rod, 18 punch, 19 position sensor, 20 hydraulic cylinder, 21 delivery pump, 22 connecting block, 23 flow valve, 24 regulating solenoid valve. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-7 , the present invention provides a technical solution:

[0037] A device for testing the mechanical properties of irradiated materials, as shown in the attached manual Figure 1 As shown, including:

[0038] A test box 1, wherein a vacuum chamber 5 is provided in the test box 1, and the vacuum chamber 5 is used for performing mechanical property testing. A mounting platform 2 is provided inside the vacuum chamber 5, and the mounting platform 2 is used for mounting a test piece. In this embodiment, the test piece is a tungsten copper material irradiated with helium ions;

[0039] An irradiation component, which is disposed on the top of the vacuum chamber 5 and is used to irradiate the specimen;

[0040] A fixing assembly, which is arranged on the mounting platform 2, and includes a clamping mechanism and a hydraulic locking mechanism. The clamping mechanism is used to clamp and fix the specimen on the mounting platform 2, and the hydraulic locking mechanism is used to lock the clamping mechanism after the clamping is completed;

[0041] A load applying assembly, the load applying assembly is used to apply a load to the specimen;

[0042] A vibration isolation assembly, the vibration isolation assembly includes a vibration isolation seat 3 and a shock absorbing push rod 4. The vibration isolation seat 3 is used to cooperate with the shock absorbing push rod 4 to reduce the impact of vibration occurring during the test on the parts in the test device. The vibration isolation seat 3 is fixedly connected to the bottom of the mounting platform 2. A plurality of shock absorbing push rods 4 are arranged at the bottom of the vibration isolation seat 3. The two ends of the shock absorbing push rod 4 are respectively fixedly connected to the side wall of the vacuum chamber 5 and the bottom of the vibration isolation seat 3. The shock absorbing push rod 4 is used to reduce the impact of vibration on the mounting platform 2.

[0043] The adjusting component includes a detection mechanism, a conveying mechanism and an adjusting mechanism. The detection mechanism is used to detect the movement state of the load applying component. The conveying mechanism is used to convey the hydraulic oil to the hydraulic locking mechanism according to the detection result of the detection mechanism. The adjusting mechanism is used to adjust the hydraulic oil in the shock absorbing push rod 4 according to the detection result of the detection mechanism.

[0044] The fixing assembly and the load applying assembly are symmetrically arranged in the vacuum chamber 5 .

[0045] In this embodiment, an infrared thermometer is provided inside the vacuum chamber 5, and the infrared thermometer is used to detect the temperature of the test piece. The infrared thermometer is arranged on the side wall of the vacuum chamber 5. At the same time, a temperature regulating device is connected to the outside of the vacuum chamber 5, and the temperature regulating device is used to regulate the temperature inside the vacuum chamber 5. The temperature regulating device is a prior art and will not be described in detail here.

[0046] The irradiation assembly includes an ion source irradiator 6 and an irradiation collimator 7. The ion source irradiator 6 is arranged at the top of the vacuum chamber 5. The ion source irradiator 6 is used to perform high-temperature irradiation on the specimen. The irradiation collimator 7 is connected to the output end of the ion source irradiator 6. The irradiation collimator 7 is connected to the output end of the high-temperature irradiator through a linear through hole. The irradiation collimator 7 is used to align the irradiation and irradiate the surface of the specimen.

[0047] The clamping mechanism includes a moving motor 8, a moving screw 9, a moving block 10, a clamping plate 11, a clamping push rod 12 and a clamping claw 13. The moving motor 8 is a servo motor. The moving motor 8 is arranged on one side of the mounting table 2. The moving motor 8 is used to drive the moving screw 9 to rotate. The moving screw 9 is a positive and negative thread screw. Therefore, when the moving motor 8 drives the moving screw 9 to rotate, the two moving blocks 10 approach or move away from each other. There are two moving blocks 10, and the two moving blocks 10 are symmetrically arranged on both sides of the moving screw 9. The moving block 10 is used to install the clamping plate 11. A clamping plate 11 is arranged on one side of the moving block 10. The clamping plate 11 is used to install the clamping push rod 12, the clamping claw 13 and the hydraulic locking mechanism. A plurality of clamping push rods 12 are arranged around the clamping plate 11. The moving end of the clamping push rod 12 is fixedly connected with the clamping push rod 12, and the clamping push rod 12 is used to drive the clamping claw 13 to move.

[0048] The hydraulic locking mechanism includes a distance sensor 14, a locking push rod 15 and a locking ring 16. The distance sensor 14 detects the position of the clamping jaw 13 through infrared rays. A distance sensor 14 is arranged on each locking ring 16. The locking push rod 15 and the locking ring 16 are arranged in several groups. The locking rings 16 of each group are nested with each other when not in use. The inner diameters of the locking rings 16 are different. According to the detection result of the distance sensor 14, the locking push rod 15 will drive the corresponding locking ring 16 to lock the position of the clamping jaw 13.

[0049] The load applying assembly includes a movable push rod 17 and a punch 18. The movable push rod 17 is a hydraulic push rod. The movable push rod 17 is used to drive the punch 18 to apply load to the specimen.

[0050] The detection mechanism includes a position sensor 19 , which also detects distance by infrared rays. The position sensor 19 is disposed on the moving push rod 17 , and is used to detect the position of the moving push rod 17 .

[0051] The conveying mechanism includes a hydraulic cylinder 20, a conveying pump 21, a connecting block 22 and a flow valve 23. The hydraulic cylinder 20 is used to store the hydraulic oil required for the vibration isolation of the locking push rod 15 and the shock-absorbing push rod 4. The hydraulic cylinder 20 is arranged inside the test box 1. A conveying pump 21 is arranged inside the hydraulic cylinder 20. The conveying pump 21 is a hydraulic diaphragm metering pump that can accurately control the amount of hydraulic oil input. The conveying pump 21 is used to convey the hydraulic oil in the hydraulic cylinder 20 to the connecting block 22. The conveying pump 21 and the connecting block 22 are connected by a pipeline (not shown in the drawings of the specification). The connecting block 22 is used to connect the conveying pump 21 and the locking push rod 15 to each other. The connecting block 22 is connected to a plurality of flow valves 23, and each flow valve 23 is connected to a different locking push rod 15.

[0052] The regulating mechanism also includes a regulating solenoid valve 24, which is controlled by an electrical signal to absorb or discharge the hydraulic oil. The regulating solenoid valve 24 is connected to the bottom of the shock absorbing push rod 4. The regulating solenoid valve 24 is used to adjust the hydraulic oil in the shock absorbing push rod 4 according to the detection result of the position sensor 19.

[0053] Working principle: When in use, the moving motor 8 drives the moving screw 9 to move, thereby driving the moving blocks 10 to approach each other, and then drives the clamping push rods 12 on the clamping plates 11 on both sides to drive the clamping claws 13 to clamp the two sides of the specimen. After the clamping is completed, according to the detection result of the clamping claw 13 by the distance sensor 14, the corresponding locking push rod 15 is controlled to drive the corresponding locking ring 16 to move so as to fix the clamping claw 13. After the locking is completed, the test can be started; when testing, the position sensor 19 will detect the moving speed of the moving push rod 17. According to the moving speed of the moving push rod 17, the delivery pump 21 pumps the hydraulic oil into the locking push rod 15, and adjusts the solenoid valve 24 to suck the hydraulic oil into the shock-absorbing push rod 4, thereby effectively absorbing and dispersing the impact energy and reducing the vibration and impact of the impact on the test device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for testing mechanical properties of irradiated materials, characterized in that: include: A test box, wherein a vacuum chamber is provided in the test box, and a mounting platform is provided inside the vacuum chamber; An irradiation component, which is disposed on the top of the vacuum chamber and is used to irradiate the specimen; A fixing assembly, the fixing assembly is arranged on the mounting table, the fixing assembly comprises a clamping mechanism and a hydraulic locking mechanism, the clamping mechanism is used to clamp and fix the specimen on the mounting table, and the hydraulic locking mechanism is used to lock the clamping mechanism after clamping is completed; A load applying assembly, wherein the load applying assembly is used to apply a load to the specimen; A vibration isolation assembly, the vibration isolation assembly comprising a vibration isolation seat and a shock absorbing push rod, the vibration isolation seat is arranged at the bottom of the mounting platform, and a plurality of shock absorbing push rods are arranged at the bottom of the vibration isolation seat, and the shock absorbing push rods are used to reduce the impact of vibration on the mounting platform; an adjusting assembly, the adjusting assembly comprising a detection mechanism, a conveying mechanism and an adjusting mechanism, the detection mechanism being used to detect the motion state of the load applying assembly, the conveying mechanism being used to convey the hydraulic oil to the hydraulic locking mechanism according to the detection result of the detection mechanism, and the adjusting mechanism being used to adjust the hydraulic oil in the damping push rod according to the detection result of the detection mechanism; The clamping mechanism comprises a moving motor, a moving lead screw, a moving block, a clamping plate, a clamping push rod and a clamping claw; The hydraulic locking mechanism includes a distance sensor, a locking push rod and a locking ring. According to the detection result of the distance sensor, the locking push rod will drive the corresponding locking ring to lock the position of the clamping jaw; The delivery mechanism includes a hydraulic cylinder, a delivery pump, a connection block and a flow valve. The hydraulic cylinder is arranged in the test box. A delivery pump is arranged inside the hydraulic cylinder. The delivery pump is used to deliver the hydraulic oil in the hydraulic cylinder to the connection block. The connection block is connected to a plurality of flow valves, each of which is connected to a different locking push rod. The load applying assembly comprises a movable push rod and a punch, wherein the movable push rod is used to drive the punch to apply a load to the specimen; The detection mechanism comprises a position sensor, which is arranged on the moving push rod and is used to detect the position of the moving push rod; The regulating mechanism also includes a regulating solenoid valve, which is connected to the bottom of the shock absorbing push rod and is used to regulate the hydraulic oil in the shock absorbing push rod according to the detection result of the position sensor.

2. The device for testing mechanical properties of irradiated materials according to claim 1, characterized in that: The fixing assembly and the load applying assembly are symmetrically arranged on both sides of the vacuum chamber.

3. The device for testing mechanical properties of irradiated materials according to claim 2, characterized in that: The irradiation assembly comprises an ion source irradiator and an irradiation collimator. The ion source irradiator is arranged on the top of the vacuum chamber, and the irradiation collimator is connected to the ion source irradiator.

4. The device for testing mechanical properties of irradiated materials according to claim 3, characterized in that: The moving motor is arranged on the mounting table, and the moving motor is used to drive the moving screw to rotate. There are two moving blocks, and the two moving blocks are symmetrically arranged on both sides of the moving screw. When the moving motor drives the moving screw to rotate, the two moving blocks approach or move away from each other. A clamping disk is arranged on one side of the moving block, and a plurality of clamping push rods are arranged around the clamping disk. The clamping push rods are used to drive the clamping claws to move.

5. The device for testing mechanical properties of irradiated materials according to claim 4, characterized in that: The distance sensor is used to detect the position of the clamping jaws. The locking push rods and the locking rings are arranged in several groups, and the inner diameters of the locking rings are different.

6. A testing method, based on the irradiated material mechanical properties testing device according to claim 5, characterized in that: The steps include: A, clamp the two ends of the specimen by the clamping mechanism; B, locking the clamping mechanism through a hydraulic locking mechanism; C, setting the applied load value, and then applying the load to the specimen through the load application assembly; D. When the load is applied, the detection mechanism detects the position of the moving push rod; E. According to the detection result of the detection mechanism, the conveying mechanism and the adjusting mechanism will input the hydraulic oil into the hydraulic locking mechanism and the shock absorbing push rod respectively.

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