A hardness testing device for radiation shielding gate valves used in nuclear power plants

Abstract

This invention relates to the field of gate valve testing technology and discloses a hardness testing device for radiation-shielded gate valves used in nuclear power plants. The device includes a frame, an adjustment assembly at the top of the frame, and an installation assembly at the lower end of the adjustment assembly. A hardness testing probe is installed at the lower end of the installation assembly. This hardness testing device for radiation-shielded gate valves used in nuclear power plants allows operators to flexibly adjust the position of the hardness testing probe by controlling the forward and reverse rotation and speed of dual motors through the adjustment assembly. This facilitates placing the testing equipment in a suitable position according to different testing needs, enabling effective testing of key areas and avoiding the omission of potential targets, thus improving the comprehensiveness of the testing. The installation assembly allows for rapid installation of the hardness testing probe, saving installation time and reducing equipment downtime, allowing hardness testing to be carried out quickly.

Description

Technical Field

[0001] This invention relates to the field of gate valve testing technology, specifically a hardness testing device for radiation shielded gate valves used in nuclear power plants. Background Technology

[0002] Gate valve testing is a process of inspecting, testing, and evaluating gate valves to ensure that their performance, quality, and safety meet relevant standards and usage requirements.

[0003] In the operation system of nuclear power plants, radiation shielding gate valves are core components for controlling the flow of fluid media and isolating radioactive areas. The hardness index of their key pressure-bearing parts directly determines the valve's erosion resistance and service life. Therefore, it is necessary to develop a hardness testing device for radiation shielding gate valves used in nuclear power plants to test the hardness of radiation shielding gate valves.

[0004] The prior art, disclosed in CN117589562A, provides a gate valve hardness testing device, relating to the field of hardness testing technology. This device includes a worktable and a testing head mounted on a hardness tester. The top of the worktable is connected to two symmetrically arranged L-shaped plates via a flipping mechanism. This gate valve hardness testing device ensures effective clamping of the gate plates, preventing loosening or displacement during testing, resulting in greater stability and reliability. It also prevents excessive pressure from deforming the gate valve, ensuring testing accuracy. Furthermore, after clamping and fixing the gate plates, it automatically absorbs and collects impurities from their surface, making cleaning more convenient and faster, while maintaining testing accuracy. During testing, it facilitates automatic movement and flipping of the gate plates, allowing for testing of the upper and lower surfaces and different positions of the gate plates, making testing more convenient, faster, and more accurate.

[0005] While the aforementioned existing technology can determine the spring compression by detecting changes in the distance of the connecting block using a distance sensor, thereby controlling the squeezing force between the conveyor roller and the gate to ensure clamping effect and prevent loosening or even displacement during detection, making it more stable and reliable, and can also prevent excessive pressure from deforming the gate valve and ensuring detection accuracy, it lacks the function of flexibly adjusting the detection position. It cannot place the detection equipment in a suitable position according to different detection needs, which to some extent leads to the ineffective detection of certain key areas and the omission of potential targets.

[0006] Therefore, there is a need for a hardness testing device for radiation shielding gate valves used in nuclear power plants to solve the problem mentioned in the background technology that lacks the function of flexibly adjusting the testing position, thus reducing the comprehensiveness of the testing. Summary of the Invention

[0007] The purpose of this invention is to provide a hardness testing device for radiation shielding gate valves used in nuclear power plants, so as to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a hardness testing device for a radiation shielding gate valve used in nuclear power plants, comprising a frame, an adjustment component being provided on the top of the frame, and an installation component being installed at the lower end of the adjustment component, and a hardness testing probe being provided at the lower end of the installation component.

[0009] The adjustment assembly includes an installation chamber, and a first motor is installed on one side of the installation chamber. A worm gear is provided at the output end of the first motor. A second motor is installed on the other side of the installation chamber. A worm wheel is provided on one side of the worm gear, and a gear is provided at the lower end of the worm wheel. A loop frame is provided on one side of the gear, and teeth that mesh with the gear are installed on the side of the loop frame near the gear. A slide rod is provided on the outer side of the loop frame, and a first slider is installed at the lower end of the slide rod. A first groove is provided in the installation chamber at the position corresponding to the movement of the first slider. An installation frame is installed at the lower end of the loop frame.

[0010] The installation assembly includes a placement compartment, and a spring is installed inside the placement compartment. A first movable block is installed on one side of the spring, and a second slider is installed at the lower end of the first movable block. The placement compartment has a second sliding groove at a position corresponding to the movement of the second slider, and an installation block is installed at the lower end of the second slider. A movable magnet is installed on one side of the installation block, and a fixed magnet is installed on the rear side of the placement compartment at a position corresponding to the movable magnet. A protrusion is installed on one side of the first movable block, and a first mounting seat is installed in the middle groove of the placement compartment, with grooves on both sides of the first mounting seat.

[0011] Preferably, an operating platform is provided at the bottom of the frame, and a clamping assembly is installed inside the operating platform, with a gate valve placed on one side of the clamping assembly.

[0012] Preferably, the mounting compartment is detachably installed on the top of the frame, the worm gear consists of two sets, which are symmetrically arranged, and the output end of the second motor is connected to one set of worm gears, and the worm wheel meshes with both sets of worm gears respectively.

[0013] Preferably, the gear is coaxially connected to the worm gear, the gear meshes with multiple sets of equidistant teeth, and the spiral frame is slidably connected to the slide rod through a slider-slide mechanism.

[0014] Preferably, there are two sets of slide rods, which are symmetrically arranged on both sides of the loop frame. The first slider is installed on one side of the two sets of slide rods and matches the first slide groove. The mounting frame is fixedly installed at the lower end of the loop frame.

[0015] Preferably, the placement compartment is detachably installed at the lower end of the mounting frame, the spring is in two sets, the two sets of springs are symmetrically arranged in the placement compartment, and the second slider is slidably arranged in the second slide groove.

[0016] Preferably, the fixed magnet attracts the movable magnet, and the fixed magnet is fixedly installed at the lower end of the placement chamber. The protrusion penetrates the placement chamber and extends to its outer side, and the protrusion matches the groove.

[0017] Preferably, the clamping assembly includes a mounting groove, a pneumatic telescopic rod is mounted on one side of the operating platform, and a second moving block is mounted on the output end of the pneumatic telescopic rod. A rotating rod is mounted on the upper end of the second moving block, and a connecting rod is connected to the upper end of the rotating rod. A second mounting seat is sleeved on the outer side of the connecting rod, and a third slider is mounted on the upper end of the second mounting seat. A third sliding groove is provided on the operating platform at the corresponding position of the third slider. A clamping block is connected to the upper end of the third slider, and a clamping pad is provided on one side of the clamping block.

[0018] Preferably, the pneumatic telescopic rod is detachably installed on one side of the operating platform, and the output end of the pneumatic telescopic rod passes through the operating platform and extends into the mounting slot. The mounting slot is located in the middle of the operating platform. There are two sets of rotating rods, which are symmetrically arranged at the upper end of the second moving block, and the rotating rods are rotatably connected to the second moving block.

[0019] Preferably, the other end of the rotating rod is rotatably connected to the second mounting base via a connecting rod, the second mounting base is fixedly disposed at the lower end of the third slider, and the third slider is slidably disposed in the third slide groove.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0021] First, the present invention, through the setting of the adjustment component, uses the meshing transmission of the worm and worm wheel driven by the first motor and the second motor to accurately convert the rotational motion into linear motion. The operator can flexibly adjust the position of the hardness detection probe by controlling the forward and reverse rotation and speed of the two motors, so as to place the detection equipment in a suitable position according to different detection needs, and to a certain extent, effectively detect key areas, avoid missing potential targets, and improve the comprehensiveness of detection.

[0022] Secondly, the present invention enables rapid installation of the hardness testing probe through the designed installation components, which saves installation time to a certain extent, reduces equipment downtime, and allows hardness testing to be carried out quickly. Especially when frequent probe replacement or testing of multiple parts is required, it can significantly improve overall testing efficiency, which helps to improve production efficiency and speed up the progress of testing projects.

[0023] Third, the present invention uses a clamping component to clamp the gate valve. The gate valve needs to be kept stable when testing hardness to avoid affecting the accuracy of the test results due to shaking or movement. By clamping, the gate valve is firmly fixed in a specific position to ensure that it will not be displaced during the hardness test, thereby improving the reliability of the test data. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a cross-sectional view of the present invention;

[0026] Figure 3 This is a schematic diagram of the adjusted component structure for the present invention;

[0027] Figure 4 This is a schematic diagram of the installation component structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the clamping component structure of the present invention.

[0029] The components include: 1. Frame; 2. Operating platform; 3. Adjustment assembly; 301. Mounting chamber; 302. First motor; 303. Worm gear; 304. Second motor; 305. Worm wheel; 306. Gear; 307. Ring frame; 308. Tooth; 309. Slide bar; 310. First slider; 311. First slide groove; 312. Mounting frame; 4. Mounting assembly; 401. Placement chamber; 402. Spring; 403. First moving block; 404. Second slider; 405. ... 406. Slide groove; 407. Mounting block; 408. Moving magnet; 409. Fixed magnet; 410. Protrusion; 411. First mounting seat; 5. Groove; 6. Hardness testing probe; 6. Clamping assembly; 601. Mounting slot; 602. Pneumatic telescopic rod; 603. Second moving block; 604. Rotating rod; 605. Connecting rod; 606. Second mounting seat; 607. Third slider; 608. Third slide groove; 609. Clamping block; 610. Clamping pad; 7. Gate valve. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-3A hardness testing device for radiation shielding gate valves used in nuclear power plants includes a frame 1. An adjustment assembly 3 is provided on the top of the frame 1. The adjustment assembly 3 includes a mounting chamber 301. A first motor 302 is mounted on one side of the mounting chamber 301. A worm gear 303 is provided at the output end of the first motor 302. A second motor 304 is mounted on the other side of the mounting chamber 301. A worm wheel 305 is provided on one side of the worm gear 303. A gear 306 is provided at the lower end of the worm wheel 305. A loop frame 307 is provided on one side of the gear 306. Teeth 308 that mesh with the gear 306 are installed on the side of the loop frame 307 near the gear 306. A slide rod 309 is provided on the outer side of the loop frame 307. A first slider 310 is installed at the lower end of the slide rod 309. A first groove 311 is provided in the mounting chamber 301 at the corresponding position of the first slider 310. A mounting frame 312 is installed at the lower end of the loop frame 307.

[0032] In this embodiment, when hardness testing is required on radiation shielded gate valves used in nuclear power plants, the position of the hardness testing probe 5 can be flexibly adjusted by adjusting component 3, allowing the mounting frame 312 to move in different directions. This meets the precise position requirements of the hardness testing probe 5 in complex testing scenarios, effectively solving the problem that traditional testing devices cannot flexibly adjust the testing position, avoiding missed detections in critical areas, improving the accuracy and comprehensiveness of hardness testing, and also increasing testing efficiency. It is suitable for the diverse hardness testing needs of radiation shielded gate valves used in nuclear power plants. By changing the operating state of the symmetrically arranged worm gear 303 driven by the first motor 302 and the second motor 304, the position can be flexibly adjusted, improving the flexibility of testing.

[0033] Specifically, the installation chamber 301 is detachably installed on the top of the frame 1. There are two sets of worm gears 303, which are symmetrically arranged. The output end of the second motor 304 is connected to one set of worm gears 303, and the worm wheel 305 meshes with the two sets of worm gears 303 respectively.

[0034] In this embodiment, the mounting chamber 301 is detachably mounted on the top of the frame 1. On the one hand, when components such as the first motor 302, the second motor 304, and the worm gear 303 inside the adjustment assembly 3 malfunction or wear, technicians can quickly disassemble the mounting chamber 301 to inspect and replace internal parts, effectively shortening equipment downtime and reducing the impact on the gate valve hardness testing progress. On the other hand, when the equipment needs to be transported or moved, the detachable mounting chamber 301 can be broken down into smaller parts, reducing transportation difficulty and space occupation, and improving the portability of the equipment. The meshing design of the two symmetrically arranged worm gears 303 and worm wheels 305 greatly enhances the accuracy and stability of the hardness testing probe 5 position adjustment. When the second motor 304 drives one set of worm gears 303 to rotate, the two sets of worm gears... 303 can synchronously drive the worm gear 305 to rotate. Compared with a single worm gear 303 drive, this symmetrical structure can make the worm gear 305 more evenly stressed, avoiding wobbling or deviation caused by uneven stress, and ensuring that the hardness testing probe 5 runs smoothly when adjusting its position horizontally or vertically. At the same time, the two sets of worm gears 303, together with the worm gear 305, can realize more complex motion mode combinations. When the first motor 302 and the second motor 304 work together, they can more precisely control the movement of components such as the gear 306 and the loop frame 307, allowing the hardness testing probe 5 to be flexibly and accurately positioned in multiple dimensions, thereby accurately detecting the hardness of different parts of the gate valve 7, significantly improving the reliability and efficiency of the test results. The first motor 302 and the second motor 304 are connected to an external power supply and controller to ensure the independent operation of the equipment.

[0035] Specifically, gear 306 is coaxially connected to worm gear 305, gear 306 meshes with multiple sets of equidistant teeth 308, and the loop frame 307 is slidably connected to slide rod 309 through slider and slide groove mechanism.

[0036] In this embodiment, gear 306 and worm gear 305 are coaxially connected, ensuring high efficiency and stability of power transmission. When worm gear 305 rotates under the drive of worm 303, gear 306 can rotate synchronously without delay or loss, directly and accurately transmitting the rotational power of worm gear 305 to the subsequent transmission structure, providing a stable and reliable power source for the position adjustment of hardness detection probe 5. Gear 306 meshes with multiple sets of equidistant teeth 308, achieving precise displacement control. By controlling the number of rotations and angle of gear 306, the moving distance of the loop frame 307 can be accurately controlled. Due to the equidistant distribution of teeth 308, for every tooth pitch rotated by gear 306, the loop frame 307 will move a fixed distance. This precise transmission relationship enables the hardness detection probe 5 to move according to the preset precision. The probe is moved to a specific detection position on the gate valve 7 to meet the stringent requirements for high-precision positioning in the hardness testing of radiation-shielded gate valves used in nuclear power plants. The loop frame 307 is slidably connected to the slide rod 309 through a slider-slide mechanism, ensuring the stability and guidance of the loop frame 307 during movement. The slider-slide mechanism restricts the direction of movement of the loop frame 307, allowing it to slide only along the direction of the slide rod 309, preventing the loop frame 307 from deviating, shaking, or jamming during movement. At the same time, this connection method can effectively distribute the force on the loop frame 307 during movement, reduce wear between components, extend the service life of the equipment, and ensure that the hardness testing device can always stably and reliably adjust the position of the hardness testing probe 5 during long-term use, providing a solid guarantee for the smooth operation of gate valve hardness testing.

[0037] Specifically, there are two sets of slide rods 309, which are symmetrically arranged on both sides of the loop frame 307. The first slider 310 is installed on one side of the two sets of slide rods 309. The first slider 310 matches the first slide groove 311. The mounting frame 312 is fixedly installed at the lower end of the loop frame 307.

[0038] In this embodiment, the symmetrical arrangement of two sets of slide rods 309 on both sides of the loop frame 307 effectively balances the forces acting on the loop frame 307 during movement. When the gear 306 drives the loop frame 307 to move via the teeth 308, the slide rods 309 on both sides simultaneously provide support for the loop frame 307, preventing it from tilting or twisting due to uneven force. This ensures that the loop frame 307 maintains a horizontal posture during movement, allowing the mounting frame 312 and hardness detection probe 5 installed at the lower end of the loop frame 307 to be smoothly adjusted in position, reducing detection errors caused by shaking or offset. Furthermore, the design of the two sets of slide rods 309 enhances the rigidity and stability of the entire transmission system. During hardness detection, especially when frequent testing of different parts of the gate valve 7 is required, the slide rods 309 need to... To withstand certain impacts and vibrations, two sets of slide rods 309 are symmetrically arranged to distribute these external forces to two support points, reducing the load on a single slide rod 309, decreasing the risk of bending or deformation, extending the service life of the slide rod 309 and related components, and improving the reliability and durability of the equipment. The matching of the first slider 310 and the first slide groove 311 further optimizes the sliding performance of the loop frame 307. The smooth sliding of the first slider 310 within the first slide groove 311 provides precise guidance for the movement of the loop frame 307, ensuring that it moves strictly according to the preset trajectory. This precise guidance not only helps improve the positioning accuracy of the hardness detection probe 5, but also reduces component wear caused by deviations in the movement trajectory, thus reducing the maintenance cost of the equipment.

[0039] Please see Figure 4 A hardness testing device for a radiation shielding gate valve used in a nuclear power plant is disclosed. An installation component 4 is mounted on the lower end of an adjustment component 3. A hardness testing probe 5 is installed on the lower end of the installation component 4. The installation component 4 includes a placement chamber 401, and a spring 402 is installed inside the placement chamber 401. A first moving block 403 is mounted on one side of the spring 402, and a second slider 404 is installed at the lower end of the first moving block 403. A second groove 405 is provided in the placement chamber 401 at a position corresponding to the movement of the second slider 404. An installation block 406 is mounted on the lower end of the second slider 404. A moving magnet 407 is provided on one side of the installation block 406, and a fixed magnet 408 is provided in the placement chamber 401 behind the moving magnet 407 at a corresponding position. A protrusion 409 is provided on one side of the first moving block 403. A first mounting seat 410 is provided in the middle groove of the placement chamber 401, and grooves 411 are provided on both sides of the first mounting seat 410.

[0040] In this embodiment, the movable magnet 407 and the fixed magnet 408 are engaged or disengaged by the movable mounting block 406. Combined with the elastic force of the spring 402, the hardness testing probe 5 can be quickly installed and disassembled. When the probe needs to be replaced or the equipment needs to be maintained, the operator only needs to operate the mounting block 406 to complete the replacement of the probe in a short time, which significantly improves the testing efficiency and reduces the equipment downtime. The cooperation between the grooves 411 and the protrusions 409 on both sides of the first mounting base 410 ensures the accurate positioning of the hardness testing probe 5 after installation. This mechanical locking structure can effectively prevent the probe from shifting or shaking during the testing process, ensuring the accuracy and reliability of the test data. Especially when testing high-precision components such as radiation shielding gate valves in nuclear power plants, accurate probe positioning is particularly important.

[0041] Specifically, the placement chamber 401 is detachably installed at the lower end of the mounting frame 312, the spring 402 consists of two sets, which are symmetrically arranged inside the placement chamber 401, and the second slider 404 is slidably installed in the second slide groove 405.

[0042] In this embodiment, the placement chamber 401 is detachably installed at the lower end of the mounting frame 312. This design brings great flexibility and convenience to the hardness testing device. When maintenance of the mounting component 4 is required, or when the hardness testing probe 5 needs to be replaced according to different testing requirements, the operator can easily disassemble the placement chamber 401 without large-scale disassembly of the entire device, significantly reducing maintenance time and cost. The spring 402 provides stable and consistent elastic force. The cooperation between the second slider 404 and the second slide groove 405 precisely controls the movement trajectory of the mounting block 406. When installing the hardness testing probe 5, the operator pushes the mounting block 406, and the second slider 404 slides smoothly in the second slide groove 405, ensuring that the moving magnet 407 can accurately fit with the fixed magnet 408. The reverse push of the mounting block 406 and the guiding effect of the slider and the slide groove ensure that the moving magnet 407 and the fixed magnet 408 are smoothly separated, making the probe disassembly process safe and convenient.

[0043] Specifically, the fixed magnet 408 attracts the movable magnet 407, and the fixed magnet 408 is fixedly installed at the lower end of the placement chamber 401. The protrusion 409 penetrates the placement chamber 401 and extends to its outer side, and the protrusion 409 matches the groove 411.

[0044] In this embodiment, when the movable magnet 407 approaches the fixed magnet 408, the magnetic attraction generated by the two serves to position the mounting block 406. The fixed position of the fixed magnet 408 determines the adsorption position of the movable magnet 407, thereby ensuring that the mounting block 406 can be accurately reset each time it is installed. The precise fit between the protrusion 409 and the groove 411 facilitates the installation of the first mounting base 410. The lower end of the first mounting base 410 is mounted with a hardness detection probe 5, which facilitates the installation of the hardness detection probe 5. An electric telescopic rod, including but not limited to, is provided between the hardness detection probe 5 and the first mounting base 410 to facilitate the adjustment of the vertical position. The hardness detection probe 5 uses the laser impact induced stress wave method to measure the hardness. In the hardness testing process, a laser pulse acts on the surface of the gate valve, generating a high-intensity stress wave. This stress wave propagates inside the gate valve, and its propagation characteristics are closely related to the material's hardness and other mechanical properties. The laser emitting device in the hardness testing probe 5 emits a high-energy short-pulse laser, which is focused on a specific area on the gate valve surface. After the laser energy is absorbed by the material, the material surface is rapidly heated, vaporized, and forms plasma. The plasma expands rapidly, generating a strong stress wave that propagates into the gate valve. The stress wave sensor in the probe detects the time, waveform, and other characteristics of the stress wave propagation inside the gate valve. By analyzing these characteristics, the hardness of the material can be inferred. For example, in materials with higher hardness, the stress wave propagation speed is usually faster, and the waveform attenuation is relatively slower.

[0045] Please see Figure 5 A hardness testing device for a radiation shielding gate valve used in a nuclear power plant is disclosed. An operating platform 2 is located at the bottom of a frame 1, and a clamping assembly 6 is installed within the operating platform 2. A gate valve 7 is placed on one side of the clamping assembly 6. The clamping assembly 6 includes a mounting groove 601. A pneumatic telescopic rod 602 is installed on one side of the operating platform 2, and a second moving block 603 is installed at the output end of the pneumatic telescopic rod 602. A rotating rod 604 is installed at the upper end of the second moving block 603, and a connecting rod 605 is connected to the upper end of the rotating rod 604. A second mounting seat 606 is sleeved on the outer side of the connecting rod 605, and a third slider 607 is installed at the upper end of the second mounting seat 606. A third sliding groove 608 is provided on the operating platform 2 at the corresponding position of the third slider 607. A clamping block 609 is connected to the upper end of the third slider 607, and a clamping pad 610 is provided on one side of the clamping block 609.

[0046] In this embodiment, the pneumatic telescopic rod 602 provides sufficient power. When the pneumatic telescopic rod 602 is activated, the second moving block 603 at its output end drives the rotating rod 604 to move, which in turn causes the third slider 607 on the second mounting base 606 to slide in the third sliding groove 608 via the connecting rod 605. Finally, the clamping block 609 moves relative to the gate valve 7 to clamp it. This ensures that the gate valve remains stable during hardness testing and avoids affecting the accuracy of the test results due to the shaking of the gate valve. The stable clamping ensures good contact between the hardness testing probe 5 and the gate valve surface, making the test data more reliable. The clamping block 609 matches the shape of the gate valve 7. The clamping pad 610 includes, but is not limited to, pads with certain elasticity, wear resistance, corrosion resistance, and good anti-slip properties to ensure that sufficient friction is provided when clamping the gate valve without damaging the gate valve surface.

[0047] Specifically, the pneumatic telescopic rod 602 is detachably installed on one side of the operating platform 2, and the output end of the pneumatic telescopic rod 602 passes through the operating platform 2 and extends into the mounting groove 601. The mounting groove 601 is opened in the middle of the operating platform 2. There are two sets of rotating rods 604. The two sets of rotating rods 604 are symmetrically arranged at the upper end of the second moving block 603, and the rotating rods 604 are rotatably connected to the second moving block 603.

[0048] In this embodiment, the pneumatic telescopic rod 602 is externally connected to an air source and controller to ensure the independent operation of each device. The pneumatic telescopic rod 602 is detachably installed on one side of the operating platform 2, which allows it to be easily removed from the operating platform when the equipment malfunctions or when maintenance, repair, or replacement of the pneumatic telescopic rod is required. The output end of the pneumatic telescopic rod 602 passes through the operating platform 2 and extends into the mounting slot 601, which is located in the middle of the operating platform 2. This design helps to make reasonable use of the space of the operating platform, making the entire... The clamping assembly has a more compact structure. There are two sets of rotating rods 604, which are symmetrically arranged on the upper end of the second moving block 603. The rotating rods 604 are rotatably connected to the second moving block 603, so that the clamping force is more evenly distributed on both sides of the gate valve. When the pneumatic telescopic rod pushes the second moving block to move, the two sets of rotating rods can synchronously drive the connecting rod and the clamping block to move, thereby ensuring that the gate valve is balanced in force during the clamping process and will not tilt or shake. This further improves the stability and reliability of the gate valve clamping and provides a strong guarantee for subsequent accurate hardness testing.

[0049] Specifically, the other end of the rotating rod 604 is rotatably connected to the second mounting base 606 via the connecting rod 605. The second mounting base 606 is fixedly installed at the lower end of the third slider 607, and the third slider 607 is slidably installed in the third slide groove 608.

[0050] In this embodiment, when the pneumatic telescopic rod 602 pushes the second moving block 603 to move, the two ends of the rotating rod 604 move and rotate at a certain angle simultaneously. The rotational motion is transmitted to the second mounting base 606 through the connecting rod 605. This flexible motion conversion can adjust the position of the clamping block 609 according to the different positions and shapes of the gate valve 7 to adapt to the clamping requirements of gate valves of different specifications, improving the versatility and adaptability of the clamping assembly, and ensuring the stability and accuracy of clamping. The cooperation between the third slider 607 and the third slide groove 608 plays a guiding and limiting role, ensuring that the second mounting base 606 and the clamping block 609 connected to it can move along a specific trajectory. During the movement and clamping of the gate valve 7, this structure enables the clamping block to accurately reach the predetermined position, ensuring that the clamping force is applied evenly to the gate valve and preventing the clamping block from shifting or shaking. This improves the stability and accuracy of clamping, providing a reliable basis for hardness testing. The structure composed of the rotating rod 604, connecting rod 605, second mounting base 606, third slider 607, and third slide groove 608 takes mechanical properties into consideration. The rotational connection between the rotating rod 604 and the connecting rod 605, as well as the fixed connection between the second mounting base 606 and the third slider 607, enable the entire structure to withstand greater forces when transmitting power and clamping the gate valve, thus enhancing the strength of the structure.

[0051] In use, when it is necessary to clamp the gate valve 7, place the gate valve 7 on the upper end of the operating platform 2, and activate the pneumatic telescopic rod 602. The pneumatic telescopic rod 602 drives the second moving block 603 to move. The movement of the second moving block 603 causes one end of the symmetrically arranged rotating rod 604 to move. At the same time, the rotation rod 604 changes its angle, causing the other end of the symmetrically arranged rotating rod 604 to move. The movement of the other end of the symmetrically arranged rotating rod 604 drives the connecting rod 605 to move. The movement of the connecting rod 605 drives the second mounting base 606 to move. The relative movement of the symmetrically arranged second mounting base 606 causes the symmetrically arranged third slider 607 to move. The relative movement causes the symmetrically arranged clamping blocks 609 to move relative to each other. This relative movement of the clamping blocks 609 causes the clamping pads 610 to adhere to both sides of the gate valve 7, ensuring the stability of the gate valve 7. When the hardness testing probe 5 needs to be quickly installed, the moving mounting block 406 causes the moving magnet 407 to adhere to the fixed magnet 408. Simultaneously, the mounting block 406 causes the second slider 404 to slide in the second slide groove 405, causing the first moving block 403 to move. The movement of the first moving block 403 causes the protrusion 409 to disengage from the groove 411 on the first mounting base 410. At the same time, the spring 402 is compressed, placing the hardness testing probe 5 into the placement chamber 40. At the middle recess of 1, the movable mounting block 406 separates the movable magnet 407 from the fixed magnet 408, the spring 402 returns to its original position, and drives the first movable block 403 to move. The movement of the first movable block 403 causes the protrusion 409 to engage in the groove 411 on the first mounting base 410. When the position of the hardness detection probe 5 needs to be automatically adjusted, the first motor 302 and the second motor 304 are started. When the first motor 302 and the second motor 304 drive the symmetrically arranged worm gear 303 to operate synchronously, they drive the worm wheel 305 to move. The movement of the worm wheel 305 drives the first slider 310 to move. The movement of the first slider 310 drives the slide rod 309 to move. The movement of the slide rod 309 causes the first slider 310 to move. The circular frame 307 and the mounting frame 312 move. The mounting frame 312 moves laterally, causing the mounting component 4 to move. The movement of the mounting component 4 causes the hardness testing probe 5 to move, adjusting the lateral position of the hardness testing probe 5. When the first motor 302 and the second motor 304 drive the symmetrically arranged worm gear 303 to rotate in opposite directions, the worm wheel 305 rotates. The rotation of the worm wheel 305 drives the gear 306 to rotate. The rotation of the gear 306 drives the circular frame 307 to move. The circular frame 307 slides in the slide bar 309, causing the mounting frame 312 to move longitudinally. The longitudinal movement of the mounting frame 312 drives the mounting component 4 to move longitudinally, causing the hardness testing probe 5 to move longitudinally.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of this application. The scope of this application is defined by the appended claims and their equivalents.

Claims

1. A hardness testing device for radiation shielding gate valves used in nuclear power plants, comprising a frame (1), characterized in that: An adjustment component (3) is provided on the top of the frame (1), and an installation component (4) is installed at the lower end of the adjustment component (3). A hardness detection probe (5) is provided at the lower end of the installation component (4). The adjustment assembly (3) includes a mounting chamber (301), and a first motor (302) is mounted on one side of the mounting chamber (301). A worm gear (303) is provided at the output end of the first motor (302). A second motor (304) is mounted on the other side of the mounting chamber (301). A worm wheel (305) is provided on one side of the worm gear (303), and a gear (306) is provided at the lower end of the worm wheel (305). A return gear is provided on one side of the gear (306). A circular frame (307) is provided, and a tooth (308) that meshes with the gear (306) is installed on the side of the circular frame (307). A slide rod (309) is provided on the outside of the circular frame (307), and a first slider (310) is installed at the lower end of the slide rod (309). A first groove (311) is provided in the mounting chamber (301) at the position corresponding to the movement of the first slider (310). A mounting frame (312) is installed at the lower end of the circular frame (307). The mounting assembly (4) includes a placement chamber (401), and a spring (402) is provided inside the placement chamber (401). A first moving block (403) is mounted on one side of the spring (402), and a second slider (404) is provided at the lower end of the first moving block (403). A second groove (405) is provided in the placement chamber (401) at the corresponding position of the second slider (404). An mounting block (406) is mounted at the lower end of the second slider (404). A moving magnet (407) is provided on one side of the mounting block (406), and a fixed magnet (408) is provided on the rear side of the placement chamber (401) at the corresponding position of the moving magnet (407). A protrusion (409) is provided on one side of the first moving block (403). A first mounting seat (410) is provided in the middle groove of the placement chamber (401), and grooves (411) are provided on both sides of the first mounting seat (410). The gear (306) is coaxially connected to the worm gear (305), the gear (306) meshes with multiple sets of equidistant teeth (308), and the spiral frame (307) is slidably connected to the slide rod (309) through a slider and slide groove mechanism; The slide rods (309) are in two sets, and the two sets of slide rods (309) are symmetrically arranged on both sides of the loop frame (307). The first slider (310) is installed on one side of the two sets of slide rods (309). The first slider (310) matches the first slide groove (311). The mounting frame (312) is fixedly installed at the lower end of the loop frame (307). The placement compartment (401) is detachably installed at the lower end of the mounting frame (312). There are two sets of springs (402), which are symmetrically arranged in the placement compartment (401). The second slider (404) is slidably arranged in the second slide groove (405). The fixed magnet (408) attracts the movable magnet (407), and the fixed magnet (408) is fixedly installed at the lower end of the placement chamber (401). The protrusion (409) penetrates the placement chamber (401) and extends to its outer side, and the protrusion (409) matches the groove (411).

2. The hardness testing device for a radiation shielding gate valve used in a nuclear power plant according to claim 1, characterized in that: The bottom of the frame (1) is provided with an operating platform (2), and a clamping assembly (6) is installed inside the operating platform (2). A gate valve (7) is placed on one side of the clamping assembly (6).

3. The hardness testing device for a radiation shielding gate valve used in a nuclear power plant according to claim 1, characterized in that: The installation chamber (301) is detachably installed on the top of the frame (1). There are two sets of worm gears (303), which are symmetrically arranged. The output end of the second motor (304) is connected to one set of worm gears (303). The worm wheel (305) meshes with the two sets of worm gears (303) respectively.

4. The hardness testing device for a radiation shielding gate valve used in a nuclear power plant according to claim 2, characterized in that: The clamping assembly (6) includes a mounting groove (601). A pneumatic telescopic rod (602) is mounted on one side of the operating platform (2), and a second moving block (603) is mounted on the output end of the pneumatic telescopic rod (602). A rotating rod (604) is mounted on the upper end of the second moving block (603), and a connecting rod (605) is connected to the upper end of the rotating rod (604). A second mounting seat (606) is sleeved on the outer side of the connecting rod (605), and a third slider (607) is mounted on the upper end of the second mounting seat (606). A third sliding groove (608) is opened on the operating platform (2) at the corresponding position of the movement of the third slider (607). A clamping block (609) is connected to the upper end of the third slider (607), and a clamping pad (610) is provided on one side of the clamping block (609).

5. The hardness testing device for a radiation shielding gate valve used in a nuclear power plant according to claim 4, characterized in that: The pneumatic telescopic rod (602) is detachably installed on one side of the operating platform (2), and the output end of the pneumatic telescopic rod (602) passes through the operating platform (2) and extends into the mounting groove (601). The mounting groove (601) is located in the middle of the operating platform (2). There are two sets of rotating rods (604). The two sets of rotating rods (604) are symmetrically arranged on the upper end of the second moving block (603), and the rotating rods (604) are rotatably connected to the second moving block (603).

6. The hardness testing device for a radiation shielding gate valve used in a nuclear power plant according to claim 4, characterized in that: The other end of the rotating rod (604) is rotatably connected to the second mounting base (606) via the connecting rod (605). The second mounting base (606) is fixedly installed at the lower end of the third slider (607), and the third slider (607) is slidably installed in the third slide groove (608).

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