Fuel rod helium pressure nondestructive testing equipment

Abstract

The invention belongs to the technical field of nuclear fuel, and particularly relates to fuel rod helium pressure nondestructive testing equipment. Comprising a sensor fixing piece, the sensor fixing piece is used for fixing a temperature sensor and is connected with a second bearing, a first spring is connected with a first screw, a clamping plate is connected with the first screw, an inductor is connected with a wheel and a screen, a resistance wire is wound on the inductor, and a gear is arranged on the wheel and used for transmitting power and is connected with the gear through meshing. The shoulder is used for connecting the rotating plate and the tensioner, the adjusting block is connected with the rotating plate, the front caliper is connected with the first bearing in the front end and connected with the wheel, the front end of the front caliper is connected with the tensioner, the motor is connected with the gear and connected with the rotating plate, the damper is connected with the clamping plate, the lengthening rod is connected with the tensioner and the rear end, and the bearing seat is connected with the second bearing. The shell is connected with the front end and the rear end. The method has the beneficial effects that the quality control of fuel rod production can be enhanced, and the leakage risk after the fuel rod enters a reactor is reduced.

Description

Technical Field

[0001] This invention belongs to the field of nuclear fuel technology, specifically relating to a non-destructive testing device for helium pressure testing of fuel rods. Background Technology

[0002] After the fuel rods are manufactured, they are filled with helium gas at approximately 2 MPa. Previously, a randomly selected pressurized fuel rod was destructively punctured, and the pressure gauge reading was taken to determine if the helium pressure of the entire batch of fuel rods met the requirements. This method wastes one fuel rod and makes it impossible to test the helium pressure of all fuel rods.

[0003] Fuel rods are core components of nuclear power plants, and their quality is crucial to the normal operation of the plant. To ensure the internal structure of the fuel rods and absorb fission gases, they need to be filled with helium at a certain pressure. Currently, there are two common methods to check whether the helium pressure meets the requirements: (1) Puncture method. By puncturing the fuel rod, the pressure inside the fuel rod is measured by a pressure gauge. Advantages of this method: fast; Disadvantages: destructive testing, poor economy, and cannot test all fuel rods (belonging to the sampling method for process assurance). (2) Non-destructive testing method. This method uses non-destructive principles for testing. Currently, the feasible methods include heat transfer method and ultrasonic method. Heat transfer method: heating one end of the fuel rod, using the helium inside the fuel rod to generate thermal convection, and detecting the temperature change at an appropriate location. A model is established based on the Fourier formula to obtain the helium pressure value. Disadvantages: the test is not intuitive; Advantages: non-destructive testing, good economy, repeatable testing, etc. Domestic research institutions such as Tsinghua University have also conducted related studies based on principles such as temperature, but have failed to manufacture a prototype. The ultrasonic method involves emitting ultrasonic waves from one end of the fuel rod to perform non-destructive testing of helium pressure. This invention can manufacture a device for practical application. Summary of the Invention

[0004] The purpose of this invention is to provide a non-destructive testing device for fuel rod helium pressure, which can perform non-destructive testing to obtain a reliable value equivalent to that of a fuel rod helium pressure testing device for puncture measurement.

[0005] The technical solution of the present invention is as follows: A fuel rod helium pressure non-destructive testing device includes a sensor fixing component, which is used to fix a temperature sensor and is connected to a second bearing. A first spring is connected to a first screw, a clamping plate is connected to the first screw, a sensor is connected to a wheel and a screen, and a resistance wire is wound on the sensor. A gear on the wheel is used to transmit power. The sensor is connected to the gear through meshing and is connected to the front caliper. A shoulder is used to connect a rotating plate and a tensioner. An adjusting block is connected to the rotating plate. The front caliper is connected to the first bearing in the front end and to the wheel. The front end is connected to the tensioner. A motor is connected to the gear and to the rotating plate. A damper is connected to the clamping plate. An extension rod is connected to the tensioner and the rear end. A bearing seat is connected to the second bearing. The outer shell is connected to the front end and the rear end.

[0006] The first screw is used to connect the first spring and the clamping plate. It is connected to the clamping plate by a threaded connection and to the first spring by a shaft hole.

[0007] The front caliper and wheel are connected together by a first bolt, and the caliper is connected to the front caliper and wheel by a threaded connection.

[0008] The rotating plate is fixed to the tensioner by a retaining ring. The retaining ring is connected to the tensioner and the rotating plate by tolerance fit, and is also connected to the tensioner by a threaded connection. The rotating plate is used to fix the motor, and is connected to the shoulder, the adjusting block and the motor by a threaded connection.

[0009] The gear is used to transmit power and enable the wheel to rotate. It is connected to the gear on the wheel through gear meshing and is connected to the motor through tolerance fit and threaded connection.

[0010] The tensioner is used to form the overall frame and provide a fixed support point for the rotating plate. It is connected to the front end and the extension rod by threaded connection, and to the fixed ring and the rotating plate by tolerance fit.

[0011] The device includes a cylinder that serves as a support for the front caliper structure, forming the frame of the front caliper. It is connected to the end cap and the first ring via threaded connections, and to the first spring collet, piston rod, pin, and gasket. The end cap is connected to the cylinder. The first spring collet is used to clamp the fuel rod and is connected to the cylinder via tolerance fit. The second spring provides elastic force to the first spring collet to clamp the fuel rod and is connected to the cylinder. The piston rod is used to move the first spring collet and is connected to the cylinder. The pin is connected to the cylinder. The gasket is connected to the cylinder. The first ring is connected to the cylinder.

[0012] It includes a stop screw used to fix the relative displacement between the stop screw bracket and the cylinder, and is connected to the moving screw bracket, and the stop screw bracket is connected to the stop screw.

[0013] The system includes a frame that forms the sensor mounting bracket, which is connected to a gasket and a flange. The gasket is connected to the main body, the flange is connected to the main body, the rod is connected to the barbell, and the outer rocker arm is connected. A knurled nut can move on the barbell. A piston is connected to a cooling pipe. A third spring is connected to a first bushing. The first bushing, the third spring, and the second spring collet are connected. An elastic bushing is connected to the first bushing. A fourth spring is connected to the second spring collet. The second spring collet is connected to the fourth spring and the main body. A sensor bracket is connected to the barbell. The outer rocker arm is connected to the main body, and the bracket is connected to the outer rocker arm.

[0014] This includes a fifth spring connected to a rod, a second bushing connected to a rod and a housing, a housing connected to a second bushing and a second screw, a second screw connecting the housing and a pressure plate together, a ring for fixing the valve, a screw for fixing it to the wheel, and a bushing connected to the wheel.

[0015] The beneficial effects of this invention are as follows: This invention can detect the helium pressure of each fuel rod, enhance the quality control of fuel rod production, and reduce the risk of leakage after the fuel rod enters the reactor; After using this invention, there is no need to waste a fuel rod when measuring the helium pressure of each batch of fuel rods, reducing production costs, reducing the waste of nuclear materials, and improving economic efficiency; This invention can be used in conjunction with the production line to realize automated testing on the production line and improve the efficiency of non-destructive testing. Attached Figure Description

[0016] Figure 1 This is a front view of a fuel rod helium pressure non-destructive testing device provided by the present invention;

[0017] Figure 2 This is a top view of a fuel rod helium pressure non-destructive testing device provided by the present invention;

[0018] Figure 3 Left view of a fuel rod helium pressure non-destructive testing device provided by the present invention;

[0019] Figure 4 This is a schematic diagram of the front caliper;

[0020] Figure 5 This is a cross-sectional view of the front caliper AA.

[0021] Figure 6 This is a cross-sectional view of the front caliper BB.

[0022] Figure 7 This is a schematic diagram of the sensor mounting hardware.

[0023] Figure 8 This is a sectional view of the sensor fixture.

[0024] Figure 9 Left view of the sensor fixture;

[0025] Figure 10 This is a schematic diagram of a damper;

[0026] Figure 11 This is a cross-sectional view of the damper AA;

[0027] Figure 12 View of damper E;

[0028] Figure 13 This is a schematic diagram of a wheel;

[0029] Figure 14 Left view of the wheel;

[0030] Figure 15 This is a cross-sectional view of the wheel from the left.

[0031] In the diagram, 1 is the sensor mounting bracket, 2 is the first spring, 3 is the clamping plate, 4 is the sensor, 5 is the wheel, 6 is the first bolt, 7 is the shoulder, 8 is the adjusting block, 9 is the front caliper, 10 is the first bearing, 11 is the funnel, 12 is the tensioner, 13 is the front end, 14 is the motor, 15 is the retaining ring, 16 is the rotating plate, 17 is the gear, 18 is the resistance wire, 19 is the screen, 20 is the first screw, 21 is the damper, 22 is the second bolt, 23 is the extension rod, 24 is the rear end, 25 is the bearing housing, 26 is the bearing cover, 27 is the outer shell, 28 is the second bearing, 29 is the cylinder, 30 is the end cap, 31 is the first spring collet, 32 is the second spring, 33 is the piston rod, 34 is the pin, and 35 is the gasket. 36 First ring, 37 Stop screw, 38 Stop screw bracket, 39 Body, 40 Washer, 41 Flange, 42 Rod bracket, 43 Rod bell, 44 Knurled nut, 45 Piston, 46 Cooling pipe, 47 Third spring, 48 First bushing, 49 Elastic bushing, 50 Fourth spring, 51 Second spring collet, 52 Sensor bracket, 53 Second screw, 54 Bracket, 55 Outer rocker arm, 56 Third bearing, 57 Fifth spring, 58 Second bushing, 59 Rod, 60 Housing, 61 Pressure plate, 62 Second screw, 63 Second ring, 64 Third bushing, 65 Valve, 66 Wheel, 67 Third screw. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1-3 As shown, a fuel rod helium pressure non-destructive testing device includes a sensor fixing component 1, a first spring 2, a clamping plate 3, a sensor 4, a wheel 5, a first bolt 6, a shoulder 7, an adjusting block 8, a front clamp 9, a first bearing 10, a funnel 11, a tensioner 12, a front end 13, a motor 14, a fixing ring 15, a rotating plate 16, a gear 17, a resistance wire 18, a screen 19, a first screw 20, a damper 21, a second bolt 22, an extension rod 23, a rear end 24, a bearing seat 25, a bearing cover 26, a housing 27, and a second bearing 28.

[0034] like Figure 1-3As shown, the sensor fixing component 1 is used to fix the temperature sensor. The temperature sensor needs to be in close contact with the object being measured to accurately capture temperature changes. The sensor fixing component 1 ensures that the sensor is stable in the designated position, avoids measurement errors caused by positional deviation, and improves the accuracy and reliability of the measurement data. Its extension is connected to the second bearing 28 through tolerance fit, and to the second bolt 22 through tolerance fit. The first spring 2 provides preload to prevent the temperature sensor from falling when rotated downwards. It is connected to the first screw 20 through a shaft hole fit. The clamping plate 3 provides a tension fixing point for the first spring 2 and is connected to the first screw 20 through a threaded connection. The sensor 4 has multiple turns of coil forming a heating induction coil for heating the fuel rod. The heating induction coil utilizes the change in magnetic field generated when current passes through a conductor to achieve heating. The coil is made of copper wire, and when alternating current passes through it, it generates an alternating magnetic field around it. This alternating magnetic field induces eddy currents (i.e., current generated by the change in magnetic field) in nearby metal objects. The eddy currents generate heat, thereby rapidly heating the fuel rod. Sensor 4 is connected to wheel 5 and screen 19 via tolerance fit. Multiple turns of copper resistance wire 18 are wound around sensor 4. Wheel 5 has gears for transmitting power, which mesh with gear 17 to transmit the motor's rotation to the fuel rod detection body, allowing it to rotate. It is threaded to front caliper 9 and connected to sensor 4 via tolerance fit. First bolt 6 connects front caliper 9 to wheel 5 via threaded connection. Shoulder 7 connects rotating plate 16 and tensioner 12 via tolerance fit. Adjusting block 8 adjusts the motor position via threaded connection to rotating plate 16. Front caliper 9 secures the fuel rod, stabilizing it within the sensor's measurement area. The front caliper 9's tightening action reduces fuel rod displacement, ensuring the temperature sensor can continuously and accurately monitor the fuel rod temperature and avoid measurement errors caused by poor contact. It is connected to the first bearing 10 in the front end 13 via a tolerance fit and to the wheel 5 via a threaded connection. The first bearing 10 connects the shaft and bearing housing, providing precise positioning to ensure the shaft maintains the correct position and orientation, preventing offset or deformation and reducing friction during rotation. It is connected to the shaft and bearing housing via a tolerance fit. The funnel 11 is used to insert the fuel rod; its structure makes insertion easier. It is connected to the bearing housing via a threaded connection and also acts as a bearing end cap, limiting the axial displacement of the first bearing 10. The tensioner 12 forms the frame of the entire temperature detection system and provides a fixed fulcrum for the rotating plate 16. It is connected to the front end 13 and the extension rod 23 via a threaded connection and to the retaining ring 15 and the rotating plate 16 via a tolerance fit. The front end 13 forms the frame of the entire temperature detection system and is connected to the tensioner 12 via a threaded connection.Motor 14 provides power for the rotation of the measuring body. It is connected to gear 17 via tolerance fit and threaded connection, and to rotating plate 16 via threaded connection. Retaining ring 15 secures rotating plate 16 to tensioner 12. It is connected to tensioner 12 and rotating plate 16 via tolerance fit, and to tensioner 12 via threaded connection. Rotating plate 16 secures motor. It is connected to shoulder 7, adjusting block 8, and motor 14 via threaded connection. Gear 17 transmits power to rotate wheel 5. It is connected to gear on wheel 5 via gear meshing, and to motor 14 via tolerance fit and threaded connection. Resistance wire 18 generates heat to heat fuel rods. It is wound around sensor 4. Screen 19 separates the front and rear sections to reduce dust. It is connected to sensor 4 via tolerance fit. First screw 20 connects first spring 2 to clamping plate 3. It is connected to clamping plate 3 via threaded connection and to first spring 2 via shaft hole fit. The damper 21 is used to reduce vibration and absorb impact energy during fuel rod detection to ensure the stability and safety of fuel rod temperature detection. It is connected to the clamping plate 3 via a thread. The second bolt 22 acts as a lever for applying preload to the temperature sensor and is connected to the sensor fixing part 1 via a tolerance fit. The extension rod 23 forms the frame of the entire temperature detection system and can adjust its distance from the tensioner 12 to tighten the front end 13 and the rear end 24. It is connected to the tensioner 12 and the rear end 24 via a threaded connection. The rear end 24 forms the frame of the entire temperature detection system and is connected to the extension rod 23 via a threaded connection. The bearing housing 25 supports and fixes the second bearing 28, enabling the second bearing 28 to work stably. By firmly fixing the bearing in the bearing housing, the bearing housing ensures that the bearing can withstand the load on the shaft and transmit these loads to the support structure, ensuring that the rotating shaft maintains the correct posture during operation. It is connected to the second bearing 28 via a tolerance fit and to the bearing cover 26 via a threaded connection. The bearing cap 26 restricts the bearing's displacement along the axial direction. It is connected to the bearing housing 25 via a threaded connection and to the rear end 24 via a tolerance fit. The housing 27 protects the internal detection system and isolates it from external dust. It also helps reduce the transmission of noise and vibration, providing a quieter and more stable working environment. It is connected to the front end 13 and the rear end 24 via a threaded connection. The second bearing 28 connects the shaft and the bearing housing, providing precise positioning to ensure the shaft maintains the correct position and orientation, preventing misalignment or deformation and reducing friction during rotation. It is connected to the shaft and bearing housing 25 via a tolerance fit.

[0035] like Figure 5 As shown, the cylinder 29 is the front caliper structure bracket, used to form the frame of the front caliper. It is connected to the end cap 30 and the first ring 36 via threaded connections, and to the first spring collet 31, piston rod 33, pin 34, and gasket 35 via tolerance fit. Figure 4As shown, end cap 30 is used to limit the displacement of internal components along the central axis, and is connected to cylinder 29 via a threaded connection. First spring collet 31 is used to clamp the fuel rod, and is connected to cylinder 29 via a tolerance fit. Second spring 32 provides elastic force to first spring collet 31 to clamp the fuel rod, and is connected to cylinder 29 via a tolerance fit. Piston rod 33 is used to move first spring collet 31, and is connected to cylinder 29 via a tolerance fit. Pin 34 limits the displacement of first spring collet 31, and is connected to cylinder 29 via a tolerance fit. Gasket 35 seals the internal cavity of cylinder, and is connected to cylinder 29 via a tolerance fit. First ring 36 connects the left and right parts of cylinder, and is connected to cylinder 29 via a threaded connection. Figure 6 As shown, the stop screw 37 is used to fix the relative displacement between the stop screw bracket 38 and the cylinder 29, and it is connected to the stop screw bracket 38 by a threaded connection. The stop screw bracket 38 is used to provide a bracket for the stop screw 37, and it is connected to the stop screw 38 by a threaded connection.

[0036] like Figure 7 and 8 As shown, the main body 39 forms the frame for the sensor mounting component and is connected to the gasket 40 and flange 41 via threaded connections. The gasket 40 supports the sensor and is connected to the main body 39 via threaded connections. The flange 41 connects the left and right portions of the main body 39 via threaded connections. The lever 42 provides a fulcrum for the barbell 43 and is connected to the barbell 43 via a tolerance fit, and is connected to the outer rocker arm 55 via a threaded connection. The barbell 43 supports the left-end sensor and is connected to the lever 42 via a tolerance fit. The knurled nut 44 is movable on the barbell 43, providing force to the right end of this lever structure, and is connected to the barbell 43 via a threaded fit. The piston 45 seals the inner cavity and is connected to the cooling pipe 46 via a tolerance fit. The cooling pipe 46 cools the internal chamber and is connected to the piston 45 via a tolerance fit. The third spring 47 provides preload to the bushing 48 and is connected to the first bushing 48 via a tolerance fit. The first bushing 48 is used to fix the second spring collet 51, and is connected to the third spring 47 and the second spring collet 51 through a tolerance fit. The elastic bushing 49 provides preload to the first bushing 48, and is connected to the first bushing 48 through a tolerance fit. The fourth spring 50 provides preload to the second spring collet 51, and is connected to the second spring collet 51 through a tolerance fit. The second spring collet 51 can be used to clamp the fuel rod, and is connected to the fourth spring 50 and the main body 39 through a tolerance fit. The sensor bracket 52 is used to fix the temperature sensor, and is connected to the bell 43 through a threaded connection. The second screw 53 is used to connect the outer rocker arm 55 to the main body 39, and is connected to the outer rocker arm 55 and the main body 39 through a threaded connection, and is connected to the third bearing 56 through a tolerance fit. Figure 9As shown, bracket 54 supports the outer rocker arm 55 and is connected to the outer rocker arm 55 via a threaded connection. The outer rocker arm 55 allows the lever frame 42 to rotate, thereby causing the lever structure to move around the fulcrum, thus adjusting the position of the sensor bracket 52. It is connected to the second screw 53 and the lever frame 42 via a threaded connection. The third bearing 56 reduces friction during the rotation of the outer rocker arm 55 and is connected to the screw 53 via a tolerance fit.

[0037] like Figure 11 As shown, the fifth spring 57 absorbs the energy generated by the damper buffer and is connected to the rod 59 via a tolerance fit. The second bushing 58 limits the displacement of the fifth spring 57 in the axial direction and is connected to the rod 59 via a tolerance fit, and to the housing 60 via a threaded connection. The rod 59 provides a track for the fifth spring 57 and is connected to the fifth spring 57, the second bushing 58, and the pressure plate 61 via a tolerance fit. The housing 60 is the structural frame of the entire damper and is connected to the second bushing 58 and the second screw 62 via a threaded connection. The pressure plate 61 fixes the rod 59 inside the damper and is connected to the second screw 62 via a threaded connection. The second screw 62 connects the housing 60 and the pressure plate 61 together via a threaded connection.

[0038] like Figure 13-15 As shown, ring 63 is used to fix valve 65, and screw 67 fixes it to wheel 66, with ring 63 connected to screw 67 via a threaded connection. Bushing 64 is used to connect wheel to front caliper 9, and bushing 64 is connected to wheel 66 via a tolerance fit. Valve 65 is used to pass cooling gas, and third screw 67 fixes it to wheel, with third screw 67 connected to third screw 67 via a threaded connection. Wheel 66 is the structural frame of wheel, connected to third screw 67 via a threaded connection, and connected to bushing 64 via a tolerance fit. Third screw 67 is used to fix second ring 63 and valve 65, and is connected to second ring 63, valve 65, and wheel 66 via a threaded connection.

[0039] Example 1: How to use

[0040] Fuel rods are transferred into the fuel rod helium pressure non-destructive testing equipment via rollers on the feed rack. Sensors detect the fuel rod's positioning, and spring chuck 51 clamps it. Resistance wire 18 heats the fuel rod. After heating, the outer rocker arm 55 drives two sensors 56 (symmetrically distributed at 180° intervals) to contact the fuel rod, measuring the initial temperature difference and temperature sum (the two adjacent positions are 180° apart). After measurement, the outer rocker arm 55 resets the sensors 56, moving them away from the fuel rod. Cooling gas is sprayed from the cooling pipe 46. Once the fuel rod surface temperature returns to normal, the spring chuck 51, driven by the gear 17 driven by motor 14, rotates the fuel rod 180°, heating the resistance wire 18. After heating, the outer rocker arm 55 drives the sensors 56 to contact the fuel rod again, measuring the temperature difference and temperature sum. After measurement, the outer rocker arm 55 resets the sensors 56, moving them away from the fuel rod. Cooling gas is sprayed from the cooling pipe 46 until the fuel rod surface temperature returns to normal. The spring clamp 51 resets, releasing the fuel rod. Driven by the rollers, the fuel rod leaves the fuel rod helium pressure non-destructive testing equipment, completing the helium pressure test for one fuel rod. Because this invention's equipment is fully automatic, the entire process only requires clicking "start" and requires no manual operation to complete automatically.

Claims

1. A fuel rod helium press non-destructive testing apparatus, characterized by: The device includes a sensor mounting bracket for securing a temperature sensor and connecting it to a second bearing; a first spring connected to a first screw; a clamping plate connected to the first screw; a sensor connected to a wheel and a screen, with a resistance wire wound around it; a gear on the wheel for transmitting power; a device connected to the gear via meshing; a front caliper; a shoulder for connecting a rotating plate and a tensioner; an adjusting block connected to the rotating plate; a front caliper connected to the first bearing in the front end and to the wheel; a front end connected to the tensioner; a motor connected to the gear and to the rotating plate; a damper connected to the clamping plate; an extension rod connected to the tensioner and the rear end; a bearing housing connected to the second bearing; and a housing connected to the front and rear ends.

2. The fuel rod helium press non-destructive inspection apparatus of claim 1, wherein: The first screw is used to connect the first spring and the clamping plate. It is connected to the clamping plate by a threaded connection and to the first spring by a shaft hole.

3. The fuel rod helium press non-destructive testing apparatus of claim 1, wherein: The front caliper and wheel are connected together by a first bolt, and the caliper is connected to the front caliper and wheel by a threaded connection.

4. The fuel rod helium press non-destructive testing apparatus of claim 1, wherein: The rotating plate is fixed to the tensioner by a retaining ring. The retaining ring is connected to the tensioner and the rotating plate by tolerance fit, and is also connected to the tensioner by a threaded connection. The rotating plate is used to fix the motor, and is connected to the shoulder, the adjusting block and the motor by a threaded connection.

5. The fuel rod helium press non-destructive testing apparatus of claim 1, wherein: The gear is used to transmit power and enable the wheel to rotate. It is connected to the gear on the wheel through gear meshing and is connected to the motor through tolerance fit and threaded connection.

6. The fuel rod helium press non-destructive testing apparatus of claim 1, wherein: The tensioner is used to form the overall frame and provide a fixed support point for the rotating plate. It is connected to the front end and the extension rod by threaded connection, and to the fixed ring and the rotating plate by tolerance fit.

7. The fuel rod helium press non-destructive testing apparatus of claim 1, wherein: The device includes a cylinder that serves as a support for the front caliper structure, forming the frame of the front caliper. It is connected to the end cap and the first ring via threaded connections, and to the first spring collet, piston rod, pin, and gasket. The end cap is connected to the cylinder. The first spring collet is used to clamp the fuel rod and is connected to the cylinder via tolerance fit. The second spring provides elastic force to the first spring collet to clamp the fuel rod and is connected to the cylinder. The piston rod is used to move the first spring collet and is connected to the cylinder. The pin is connected to the cylinder. The gasket is connected to the cylinder. The first ring is connected to the cylinder.

8. The fuel rod helium press non-destructive testing apparatus of claim 1, wherein: It includes a stop screw used to fix the relative displacement between the stop screw bracket and the cylinder, and is connected to the moving screw bracket, and the stop screw bracket is connected to the stop screw.

9. The fuel rod helium press non-destructive testing apparatus of claim 1, wherein: The system includes a frame that forms the sensor mounting bracket, which is connected to a gasket and a flange. The gasket is connected to the main body, the flange is connected to the main body, the rod is connected to the barbell, and the outer rocker arm is connected. A knurled nut can move on the barbell. A piston is connected to a cooling pipe. A third spring is connected to a first bushing. The first bushing, the third spring, and the second spring collet are connected. An elastic bushing is connected to the first bushing. A fourth spring is connected to the second spring collet. The second spring collet is connected to the fourth spring and the main body. A sensor bracket is connected to the barbell. The outer rocker arm is connected to the main body, and the bracket is connected to the outer rocker arm.

10. The fuel rod helium press non-destructive testing apparatus of claim 1, wherein: This includes a fifth spring connected to a rod, a second bushing connected to a rod and a housing, a housing connected to a second bushing and a second screw, a second screw connecting the housing and a pressure plate together, a ring for fixing the valve, a screw for fixing it to the wheel, and a bushing connected to the wheel.

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