Nuclear fusion cold shield tube plate gap measuring device

Abstract

The present application relates to the technical fields of nuclear fusion cold screen tube plate gap measurement, and discloses a nuclear fusion cold screen tube plate gap measurement device, which comprises a measurement mechanism, the measurement mechanism comprises a mounting frame, a light emitting part, a light receiving part and two rollers, a cold screen tube assembly space is formed between the two rollers, the two rollers are rotatably arranged on the mounting frame, and the light emitting part and the light receiving part are arranged on the end faces of the two rollers facing each other; a controller is in communication connection with the light emitting part and the light receiving part, and the controller is configured to determine the gap between the cold screen tube and the cold screen plate according to the light information received by the light receiving part. By arranging the nuclear fusion cold screen tube plate gap measurement device, the risk of surface damage of the cold screen tube caused by direct contact between the nuclear fusion cold screen tube plate gap measurement device and the cold screen tube is reduced, the measurement accuracy is improved, and the continuous measurement of the gap between the cold screen tube and the cold screen plate by the nuclear fusion cold screen tube plate gap measurement device is realized.

Description

Technical Field

[0001] This invention relates to the field of nuclear fusion cold screen tube sheet gap measurement technology, and in particular to a nuclear fusion cold screen tube sheet gap measurement device. Background Technology

[0002] In related technologies, due to the difference between the bending profile of the cold shield tube and the profile of the cold shield plate in a nuclear fusion device, a gap will form between the cold shield tube and the cold shield plate when they are fitted together. If the gap between the cold shield tube and the cold shield plate is too large, it will result in an excessively wide weld between the cold shield tube and the cold shield plate, which may easily lead to a decrease in the welding quality of the cold shield tube and the cold shield plate, and may also cause the assembled cold shield tube to exceed the size limit of the nuclear fusion device. If the cold shield tube and the cold shield plate are forcibly fitted together during welding, residual stress that cannot be released will exist inside the cold shield tube. In the operating environment of a nuclear fusion device, the cold shield tube and the cold shield plate will undergo repeated and large-scale temperature rise and fall deformation, and will also be affected by strong electromagnetic fields. The unreleased residual stress inside the cold shield tube can easily lead to leakage of the cold shield tube. Therefore, before welding the cold screen tube to the cold screen plate, the gap between the cold screen tube and the cold screen plate will be measured and the cold screen tube will be adjusted. Only when the gap between the cold screen tube and the cold screen plate meets the requirements can the subsequent welding be carried out.

[0003] Existing nuclear fusion cold shield tube-plate gap measuring devices use a plug or feeler gauge of a certain thickness to determine whether the gap between the cold shield tube and the cold shield plate meets the requirements. However, the plug or feeler gauge may damage the surface of the cold shield tube. In addition, the existing nuclear fusion cold shield tube-plate gap measuring devices have low measurement accuracy and cannot perform continuous measurements. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a nuclear fusion cold screen tube-plate gap measuring device, which is beneficial to reducing the risk of surface damage to the cold screen tube caused by direct contact between the nuclear fusion cold screen tube-plate gap measuring device and the cold screen tube, beneficial to improving measurement accuracy, and beneficial to realizing continuous measurement of the gap between the cold screen tube and the cold screen plate by the nuclear fusion cold screen tube-plate gap measuring device.

[0005] According to an embodiment of the present invention, a nuclear fusion cold shield tube-plate gap measuring device includes: a measuring mechanism, which includes: a mounting frame, a light emitting part, a light receiving part, and two rollers. The two rollers are opposite to each other and spaced apart along a first direction to form a cold shield tube assembly space between the two rollers. Both rollers are rotatably mounted on the mounting frame about the first direction. The light emitting part and the light receiving part are respectively disposed on the end faces of the two rollers facing each other. The light emitting part extends radially along the corresponding roller. The light emitting part and the light receiving part are opposite to each other along the first direction. The rollers are adapted to roll on the cold shield plate. A controller is communicatively connected to both the light emitting part and the light receiving part. The controller is configured to determine the gap between the cold shield tube and the cold shield plate based on the light information received by the light receiving part.

[0006] The nuclear fusion cold shield tube-plate gap measuring device according to embodiments of the present invention, by setting up the nuclear fusion cold shield tube-plate gap measuring device, helps to reduce the risk of damage to the surface of the cold shield tube caused by direct contact between the nuclear fusion cold shield tube-plate gap measuring device and the cold shield tube, helps to improve the measurement accuracy, and helps to realize the continuous measurement of the gap between the cold shield tube and the cold shield plate by the nuclear fusion cold shield tube-plate gap measuring device.

[0007] In some examples of the present invention, the nuclear fusion cold screen tube sheet gap measuring device further includes: multiple pressure detection elements, multiple light emitting elements, multiple light emitting elements arranged sequentially along the circumference of the corresponding rollers, multiple pressure detection elements provided on the outer peripheral wall of the rollers provided with light emitting elements, multiple pressure detection elements arranged sequentially along the circumference of the corresponding rollers, and multiple pressure detection elements and multiple light emitting elements corresponding one to one, multiple pressure detection elements are all communicatively connected to the controller, and the controller is further configured to control the corresponding light emitting elements to emit light parallel to the first direction according to the pressure information detected by the pressure detection elements.

[0008] In some examples of the invention, the pressure sensing element extends axially along the corresponding roller.

[0009] In some examples of the present invention, the nuclear fusion cold screen tube sheet gap measuring device further includes: a handheld mechanism, the handheld mechanism and the measuring mechanism are arranged along a second direction, the handheld mechanism is connected to the mounting frame, the handheld mechanism is used to drive the measuring mechanism to move, and the first direction and the second direction are perpendicular.

[0010] In some examples of the present invention, the mounting bracket includes: a mounting bracket body and two mounting rods, the two mounting rods being opposite to each other and spaced apart along a first direction and both extending along a second direction, along the second direction, the two mounting rods being located on the same side of the mounting bracket body and both being fixed to the mounting bracket body, each mounting rod having a roller at its end away from the mounting bracket body, and a hand-held mechanism being located on the side of the mounting bracket body away from the mounting rod and connected to the mounting bracket body.

[0011] In some examples of the present invention, the nuclear fusion cold shield tube-plate gap measuring device further includes: a positioning mechanism, which is disposed on the mounting frame body and located on the side of the mounting frame body facing the mounting rod, and the positioning mechanism is located between two mounting rods. The positioning mechanism is used to measure the relative position of the measuring mechanism and the cold shield tube along a first direction when the measuring mechanism moves.

[0012] In some examples of the present invention, the positioning mechanism includes a camera; or the positioning mechanism includes a laser measurement mechanism.

[0013] In some examples of the present invention, the nuclear fusion cold shield tube-plate gap measuring device further includes: a connecting mechanism connected between the mounting frame body and the handheld mechanism, a positioning mechanism and the connecting mechanism being communicatively connected, and the connecting mechanism being configured to drive the measuring mechanism to move when the relative positions of the measuring mechanism and the cold shield tube are offset along a first direction during the movement of the measuring mechanism, so that the cold shield tube is in the middle position between the two rollers.

[0014] In some examples of the present invention, the connecting mechanism is movably disposed on the handheld mechanism along a first direction, and the connecting mechanism is also rotatably disposed on the handheld mechanism about a second direction, and the connecting mechanism is fixed to the mounting frame body.

[0015] In some examples of the present invention, the handheld mechanism includes: a connecting frame and a handle, the connecting frame and the mounting frame being connected, and the handle being disposed on the connecting frame and extending along a first direction.

[0016] In some examples of the present invention, the connecting frame includes: a first plate and two second plates, the two second plates being opposite to and spaced apart along a first direction, a handle being connected between the two second plates, and the first plate being connected between the two second plates and connected to the mounting frame.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an assembly schematic diagram of the cold shield tube, cold shield plate, and nuclear fusion cold shield tube-plate gap measuring device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a nuclear fusion cold screen tube sheet gap measuring device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the nuclear fusion cold screen tube sheet gap measuring device from another angle according to an embodiment of the present invention; Figure 4This is a schematic diagram of the structure of a roller with a light emitting part and a pressure detection element according to an embodiment of the present invention.

[0019] Figure label: Nuclear fusion cooling screen tube sheet gap measuring device 10; Mounting bracket 21; Mounting bracket body 211; Mounting rod 212; Roller 22; Cold shield tube assembly space 221; Launcher mounting slot 222; Light emitting unit 23; light receiving unit 24; 30mm cold screen tube; Cold screen plate 40; Connecting frame 51; First plate 511; Second plate 512; Handle 52; First slide groove 53; Positioning mechanism 60; Connecting mechanism 70; Pressure testing component 80. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] The following is for reference. Figures 1-3 A nuclear fusion cold screen tube sheet gap measuring device 10 is described according to an embodiment of the present invention.

[0022] like Figures 1-3 As shown, the nuclear fusion cold shield tube-plate gap measuring device 10 according to an embodiment of the present invention includes: a measuring mechanism, which includes: a mounting frame 21, a light emitting part 23, a light receiving part 24, and two rollers 22. The two rollers 22 are opposite to each other and spaced apart along a first direction to form a cold shield tube assembly space 221 between the two rollers 22. Both rollers 22 are rotatably disposed on the mounting frame 21 about the first direction. The light emitting part 23 and the light receiving part 24 are respectively disposed on the end faces of the two rollers 22 facing each other. The light emitting part 23 extends radially along the corresponding roller 22. The light emitting part 23 and the light receiving part 24 are opposite to each other along the first direction. The rollers 22 are adapted to roll on the cold shield plate 40. A controller is communicatively connected to both the light emitting part 23 and the light receiving part 24. The controller is configured to determine the gap between the cold shield tube 30 and the cold shield plate 40 based on the light information received by the light receiving part 24.

[0023] Among them, such as Figure 2As shown, the first direction is defined as the X direction. The mounting bracket 21 can be made of materials such as aluminum alloy or steel, and can be formed by machining, mold casting, or other methods. The light emitting part 23 can be a laser diode, and the light receiving part 24 can be a photodiode. As one embodiment, the controller can be an external device such as a computer or mobile phone belonging to the operator. As another embodiment, the controller can be installed inside the nuclear fusion cold screen tube-plate gap measuring device 10, and the controller can be a small control component such as a microcontroller, PLC, or embedded main control board.

[0024] For example, two rollers 22 can be attached to the cold screen plate 40, and the cold screen tube 30 can be placed within the cold screen tube assembly space 221. The two rollers 22 rotate about a first direction, and the light emitting unit 23 can emit light signals. These light signals can be directed parallel to the first direction towards the corresponding light receiving unit 24, and the light is parallel. The light receiving unit 24 can transmit the received light signal along the radial direction of the rollers 22 to the controller. The controller can calculate the gap between the cold screen tube 30 and the cold screen plate 40 based on the radial direction length of the light signal received by the light receiving unit 24.

[0025] As an example, the light receiving part 24 can be disposed on the end face of the roller 22 without the light emitting part 23 facing the roller 22 with the light emitting part 23, and the light receiving part 24 can cover the entire radial area of ​​the end face of the corresponding roller 22 facing the other roller 22 along the first direction. The light receiving part 24 is a light receiving surface structure. As an embodiment, such as Figure 2 , Figure 4 As shown, the end face of the roller 22 where the light emitting part 23 is located, facing the other roller 22 along the first direction, can be formed with an emitting part mounting groove 222. The light emitting part 23 can be installed in the emitting part mounting groove 222, and the emitting part mounting groove 222 and the light emitting part 23 can be set in a one-to-one correspondence.

[0026] As an example, the light emitting unit 23 can extend radially along the corresponding roller 22 to the outer peripheral wall edge of the corresponding roller 22. In this case, the length of the light information received by the light receiving unit 24 can be the light signal passing through the gap between the cold screen tube 30 and the cold screen plate 40. After receiving the light signal, the light receiving unit 24 will transmit the electrical signal data of the length of the light signal received by the light receiving unit 24 to the controller that is communicatively connected to the light receiving unit 24 in real time. After receiving the light signal length data, the controller will call the calibration database corresponding to the gap width between the cold screen tube 30 and the cold screen plate 40 and the light signal length that is pre-stored in the controller, and accurately match the real-time collected light signal length data with the calibration value in the database to quickly calculate and determine the actual gap width value between the cold screen tube 30 and the cold screen plate 40. At this time, the length of the optical signal is positively correlated with the gap width between the cold screen tube 30 and the cold screen plate 40. The larger the gap between the cold screen tube 30 and the cold screen plate 40, the longer the length of the optical signal received by the optical receiving unit 24. The smaller the gap between the cold screen tube 30 and the cold screen plate 40, the shorter the length of the optical signal received by the optical receiving unit 24.

[0027] In another embodiment, the light emitting part 23 can extend radially along the corresponding roller 22, and the outer peripheral wall edge of the corresponding roller 22 and the corresponding end of the light emitting part 23 can have a certain distance, the distance length of which can be 0.5mm. At this time, after the light receiving part 24 receives the light length information, it will transmit the light length information to the controller. After the controller receives the light length information, the controller determines the gap size between the cold screen tube 30 and the cold screen plate 40. At this time, the gap size is the sum of the light length information received by the light receiving part 24 and 0.5mm.

[0028] The nuclear fusion cold shield tube-plate gap measuring device 10 of this application measures the gap between the cold shield tube 30 and the cold shield plate 40 by emitting light signals through the light emitting unit 23 and receiving light information through the light receiving unit 24. Although the two rollers 22 contact and roll with the cold shield plate 40, they do not rub, squeeze, or collide with the cold shield tube 30. This helps reduce the risk of surface damage to the cold shield tube 30 caused by direct contact between the nuclear fusion cold shield tube-plate gap measuring device 10 and the cold shield tube 30, and helps protect the original structure and surface quality of the cold shield tube 30. Compared with existing nuclear fusion cold shield tube-plate gap measuring devices, the nuclear fusion cold shield tube-plate gap measuring device 10 of this application measures the gap between the cold shield tube 30 and the cold shield plate 40 through the light emitting unit 23 and the light receiving unit 24, resulting in more accurate and reliable measurement data, which helps improve measurement precision.

[0029] During the rolling of the two rollers 22 on the cold shield plate 40, the light emitting unit 23 emits light signals, and the light receiving unit 24 can receive the light information in real time and transmit it synchronously to the controller. The controller can process the light information in real time and calculate the gap between the cold shield tube 30 and the cold shield plate 40, which is beneficial to realize the continuous measurement of the gap between the cold shield tube 30 and the cold shield plate 40 by the nuclear fusion cold shield tube plate gap measuring device 10.

[0030] According to the embodiments of the present invention, the nuclear fusion cold screen tube-plate gap measuring device 10 can reduce the risk of surface damage to the cold screen tube 30 caused by direct contact between the nuclear fusion cold screen tube-plate gap measuring device 10 and the cold screen tube 30, improve measurement accuracy, and enable continuous measurement of the gap between the cold screen tube 30 and the cold screen plate 40 by the nuclear fusion cold screen tube-plate gap measuring device 10.

[0031] In some examples of embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the nuclear fusion cold screen tube sheet gap measuring device 10 also includes: multiple pressure detection elements 80, multiple light emitting parts 23, multiple light emitting parts 23 are arranged sequentially along the circumference of the corresponding rollers 22, multiple pressure detection elements 80 are provided on the outer peripheral wall of the rollers 22 provided with light emitting parts 23, multiple pressure detection elements 80 are arranged sequentially along the circumference of the corresponding rollers 22, and multiple pressure detection elements 80 and multiple light emitting parts 23 correspond one-to-one, multiple pressure detection elements 80 are all communicatively connected to the controller, and the controller is also configured to control the corresponding light emitting parts 23 to emit light parallel to the first direction according to the pressure information detected by the pressure detection elements 80.

[0032] In one embodiment, there are multiple light emitting units 23, which are arranged sequentially along the circumference of the corresponding rollers 22. The end face of the roller 22 where the light emitting unit 23 is located facing another roller 22 in the first direction can be formed with a light emitting unit mounting groove 222. The light emitting unit 23 can be installed in the light emitting unit mounting groove 222, and the light emitting unit mounting groove 222 and the light emitting unit 23 can be set in a one-to-one correspondence. That is, multiple light emitting unit mounting grooves 222 can be formed on the end face of the roller 22 where the light emitting unit 23 is located facing another roller 22 in the first direction, and the multiple light emitting unit mounting grooves 222 can be arranged sequentially along the circumference of the corresponding rollers 22.

[0033] As an example, when measuring the gap between the cold shield tube 30 and the cold shield plate 40, the two rollers 22 of the nuclear fusion cold shield tube plate gap measuring device 10 can be placed in contact with the surface of the cold shield plate 40, and the cold shield tube 30 is located in the cold shield tube assembly space 221 between the two rollers 22. When the two rollers 22 of the nuclear fusion cold shield tube plate gap measuring device 10 roll along the extension trajectory of the cold shield tube 30, the pressure detection element 80 located on the outer peripheral wall of the roller 22 and in contact with the cold shield plate 40 can detect the contact pressure information between the roller 22 and the cold shield plate 40 and transmit the pressure information to the controller. The controller can filter out the pressure detection element 80 that is in contact with the cold shield plate 40 based on the received pressure information and trigger the light emitting part 23 corresponding to the pressure detection element 80 to emit a light signal parallel to the first direction. Part of the light signal can pass through the gap between the cold shield tube 30 and the cold shield plate 40 and directly shine on the light receiving part 24 of the other roller 22. The light receiving part 24 captures the light signal and converts the light signal into electrical signal data containing the length of the light signal, and feeds it back to the controller in real time. The controller can calculate the actual gap width between the cold shield tube 30 and the cold shield plate 40 at the current measurement position.

[0034] Multiple pressure detection elements 80 are arranged sequentially along the circumference of the corresponding rollers 22, and each pressure detection element 80 and multiple light emitting units 23 are set in a one-to-one correspondence. The controller controls the corresponding light emitting unit 23 to emit light parallel to the first direction only according to the pressure information detected by the pressure detection element 80. This helps to ensure that the light signal emitted by the light emitting unit 23 is directed to the gap area between the cold screen tube 30 and the cold screen plate 40, which helps to improve the accuracy of the gap measurement between the cold screen tube 30 and the cold screen plate 40. At the same time, it also helps to reduce the meaningless light emission of the light emitting unit 23, which helps to reduce the overall energy consumption of the nuclear fusion cold screen tube plate gap measuring device 10, and helps to extend the service life of the light emitting unit 23, thereby improving the overall durability of the nuclear fusion cold screen tube plate gap measuring device 10.

[0035] In some examples of embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the pressure sensing element 80 extends along the axial direction of the corresponding roller 22.

[0036] The pressure detection element 80 extends along the axial direction of the corresponding roller 22, which helps to cover the axial area where the roller 22 contacts the cold screen plate 40, increases the contact area between the pressure detection element 80 and the cold screen plate 40, reduces the risk of invalid triggering of the light emitting part 23 due to unevenness of the surface of the cold screen plate 40 during single-point detection, and ensures that the light information received by the light receiving part 24 is data that can reflect the actual gap between the cold screen tube 30 and the cold screen plate 40, thereby improving the reliability of the gap measurement between the cold screen tube 30 and the cold screen plate 40.

[0037] In some examples of embodiments of the present invention, the nuclear fusion cold screen tube sheet gap measuring device 10 further includes: a handheld mechanism, the handheld mechanism and the measuring mechanism are arranged along a second direction, the handheld mechanism is connected to the mounting frame 21, the handheld mechanism is used to drive the measuring mechanism to move, and the first direction and the second direction are perpendicular.

[0038] Among them, such as Figure 2 As shown, the second direction is defined as the Z direction. The operator can hold the handheld mechanism to measure the gap between the cold screen tube 30 and the cold screen plate 40. The handheld mechanism and the measuring mechanism are arranged along the second direction, which helps maintain a certain distance between the operator's hand and the gap between the cold screen tube 30 and the cold screen plate 40, reducing the risk of the operator's hand interfering with the propagation of the light signal emitted by the light emitting unit 23. The handheld mechanism is connected to the mounting bracket 21, and the handheld mechanism can drive the measuring mechanism to move along the extension direction of the cold screen tube 30, which helps ensure that the roller 22 always rolls in contact with the cold screen plate 40.

[0039] In some examples of embodiments of the present invention, such as Figure 2 As shown, the mounting bracket 21 includes a mounting bracket body 211 and two mounting rods 212. The two mounting rods 212 are opposite to each other and spaced apart along a first direction and both extend along a second direction. Along the second direction, the two mounting rods 212 are located on the same side of the mounting bracket body 211 and are both fixed to the mounting bracket body 211. Each mounting rod 212 has a roller 22 at its end away from the mounting bracket body 211. A hand-held mechanism is located on the side of the mounting bracket body 211 away from the mounting rods 212 and is connected to the mounting bracket body 211.

[0040] The mounting rod 212 can be integrally formed with the mounting frame body 211, or it can be fixed to the mounting frame body 211 by bolts, clips, or other fasteners. Alternatively, the mounting rod 212 can be welded to the mounting frame body 211. The hand-held mechanism can also be integrally formed with the mounting frame body 211, or it can be welded to the mounting frame body 211, or it can be fixed to the mounting frame body 211 by bolts, clips, or other fasteners.

[0041] As one embodiment, both rollers 22 can be formed with first mounting holes, which can penetrate the respective rollers 22 along a first direction, allowing the two bearings to be pressed into the two first mounting holes respectively. Both mounting rods 212 can include first mounting portions, which can be located at the end of the mounting rod 212 away from the mounting frame body 211. The two first mounting portions can be arranged opposite each other along the first direction, and can be inserted into the inner rings of the two bearings respectively by interference fit, thereby achieving the effect that both rollers 22 are rotatably mounted on the mounting frame 21 around the first direction.

[0042] The two mounting rods 212 are opposite to each other and spaced apart along the first direction, and both extend along the second direction, which helps to keep the dimensions of the cold shield tube assembly space 221 consistent along the second direction. Both mounting rods 212 are fixed to the mounting bracket body 211, which helps to improve the structural stability of the mounting bracket 21. Both mounting rods 212 extend along the second direction, and along the second direction, each mounting rod 212 has a roller 22 at its end opposite to the mounting bracket body 211. The mounting rod 212 can provide a suitable support height for the roller 22, reducing the risk of collision or friction between the mounting bracket body 211 and the cold shield tube 30 when the roller 22 rolls, thus reducing the risk of surface damage to the cold shield tube 30 caused by direct contact between the mounting bracket body 211 and the cold shield tube 30.

[0043] The handheld mechanism is located on the side of the mounting frame body 211 away from the mounting rod 212 and is connected to the mounting frame body 211. When the operator drives the nuclear fusion cold screen tube plate gap measuring device 10 to move through the handheld mechanism, the driving force applied by the operator can be transmitted through the mounting frame body 211 to the mounting rod 212, and then from the mounting rod 212 to the roller 22. This helps to ensure that the driving force can be transmitted evenly and stably to the roller 22, and helps to ensure that the roller 22 rolls stably along the cold screen plate 40 during the measurement process.

[0044] In some examples of embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 3 As shown, the nuclear fusion cold shield tube-plate gap measuring device 10 further includes: a positioning mechanism 60, which is disposed on the mounting frame body 211 and located on the side of the mounting frame body 211 facing the mounting rod 212, and the positioning mechanism 60 is located between the two mounting rods 212. The positioning mechanism 60 is used to measure the relative position of the measuring mechanism and the cold shield tube 30 along the first direction when the measuring mechanism moves.

[0045] The positioning mechanism 60 may include a camera or a laser measuring mechanism. As one embodiment, the positioning mechanism 60 can be fixed to the mounting bracket body 211 using fasteners such as bolts or clips. As another embodiment, the mounting bracket body 211 may have a first mounting groove formed on the side facing the mounting rod 212, into which the positioning mechanism 60 can be embedded.

[0046] The positioning mechanism 60 is located on the mounting bracket body 211 and on the side of the mounting bracket body 211 facing the mounting rod 212. The positioning mechanism 60 is located between the two mounting rods 212. This facilitates the positioning mechanism 60 to align with the cold screen tube assembly space 221 between the two rollers 22. It also facilitates the positioning mechanism 60 to capture the relative position of the measuring mechanism and the cold screen tube 30 along the first direction at close range. Furthermore, it facilitates the positioning mechanism 60's installation position to not affect the rolling of the rollers 22. The positioning mechanism 60 can continuously measure the relative position of the measuring mechanism and the cold screen tube 30 along the first direction during the rolling of the rollers 22, which helps to ensure the continuity of the measurement by the positioning mechanism 60.

[0047] In some examples of embodiments of the present invention, the positioning mechanism 60 includes a camera; or the positioning mechanism 60 includes a laser measurement mechanism.

[0048] As an example, the controller can be an external device, and the positioning mechanism 60 can communicate with the controller. As another example, the controller can be integrated into the positioning mechanism 60. In one embodiment, the positioning mechanism 60 includes an industrial-grade high-definition intelligent camera. The camera can continuously capture real-time images of the cold screen tube 30 at a preset frame rate. The camera's built-in image preprocessing algorithm automatically calculates the distance from the center of the cold screen tube 30 to the two rollers 22 and displays the two distance values ​​on the image. If the distance values ​​from the center of the cold screen tube 30 to the two rollers 22 are the same, it indicates that the cold screen tube 30 is located at the center position between the two rollers 22. If the distance values ​​from the center of the cold screen tube 30 to the two rollers 22 are different, it indicates that the cold screen tube 30 has shifted.

[0049] As another embodiment, the positioning mechanism 60 includes a laser measurement mechanism, which may include multiple laser distance sensors arranged sequentially along a first direction, and each of the multiple laser distance sensors can be communicatively connected to the controller.

[0050] When roller 22 rolls on the cold screen plate 40, the controller can control multiple laser emitters to simultaneously emit lasers towards the cold screen tube 30. Multiple laser distance sensors calculate their respective distances to the cold screen tube 30 along the second direction. The controller can receive the distance values ​​detected by the multiple laser distance sensors. When the distance between the laser emitter in the middle and the cold screen tube 30 is the smallest, and the distances between the symmetrically distributed laser emitters on both sides and the cold screen tube 30 show a symmetrical increasing trend, the cold screen tube 30 is located at the center position between the two rollers 22. If the distance between a laser emitter on one side and the cold screen tube 30 is less than the distance between the laser emitter in the middle and the cold screen tube 30, the controller can determine the offset direction and specific offset of the cold screen tube 30.

[0051] The camera employs non-contact shooting, avoiding any physical contact with the surface of the cold shield tube 30. This reduces the risk of damage to the surface of the cold shield tube 30 caused by direct contact between the positioning mechanism 60 and the cold shield tube 30. Simultaneously, the camera's dynamic shooting capability is adaptable to the continuous movement of the nuclear fusion cold shield tube gap measuring device 10. Whether the nuclear fusion cold shield tube gap measuring device 10 moves at a constant speed or a variable speed along the cold shield tube 30, the camera can stably acquire images at a preset frame rate. This facilitates the positioning mechanism 60 in stably measuring the relative position of the measuring mechanism and the cold shield tube 30 along the first direction.

[0052] The laser measurement mechanism eliminates the need for multiple steps such as image acquisition and feature extraction using a camera, which helps to shorten the positioning time of the cold screen tube 30. Furthermore, the laser measurement mechanism is less affected by external factors such as ambient light and dust; even in dark environments, it can still transmit signals stably, enhancing the environmental adaptability of the nuclear fusion cold screen tube gap measurement device 10.

[0053] In some examples of embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 3 As shown, the nuclear fusion cold shield tube-plate gap measuring device 10 further includes: a connecting mechanism 70, which is connected between the mounting frame body 211 and the handheld mechanism; a positioning mechanism 60 and the connecting mechanism 70 are communicatively connected; the connecting mechanism 70 is configured to drive the measuring mechanism to move when the relative position of the measuring mechanism and the cold shield tube 30 shifts along the first direction during the movement of the measuring mechanism, so that the cold shield tube 30 is in the middle position between the two rollers 22.

[0054] During the movement of the measuring mechanism, when the relative positions of the measuring mechanism and the cold shield tube 30 shift along the first direction, the connecting mechanism 70 drives the measuring mechanism to move, positioning the cold shield tube 30 in the middle position between the two rollers 22. This process requires no manual intervention, simplifying the operation of the nuclear fusion cold shield tube gap measuring device 10, reducing measurement interruptions caused by manual adjustments, ensuring continuous measurement, and improving measurement efficiency. By driving the measuring mechanism with the connecting mechanism 70, the positional shift of the cold shield tube 30 is corrected promptly, reducing the risk of surface damage to the cold shield tube 30 caused by contact between the rollers 22 and the cold shield tube 30.

[0055] In some examples of embodiments of the present invention, the connecting mechanism 70 is movably disposed on the handheld mechanism along a first direction, and the connecting mechanism 70 is also rotatably disposed on the handheld mechanism about a second direction, and the connecting mechanism 70 is fixed to the mounting frame body 211.

[0056] As one example, the connecting mechanism 70 can be fixed to the mounting bracket body 211 by bolts or clips. As another example, the connecting mechanism 70 can be welded to the mounting bracket body 211.

[0057] As one embodiment, the connecting mechanism 70 may include a ball screw, a first drive motor, a moving block, a rotating shaft, and a second drive motor. Along the second direction, such as... Figure 3 As shown, a first groove 53 can be formed on the side of the handheld mechanism facing the connecting mechanism 70, and the first groove 53 can extend along a first direction. A ball screw extending along the first direction can be provided in the first groove 53, and the ball screw is rotatably mounted on the handheld mechanism. The first drive motor can be coaxially fixedly connected to the ball screw.

[0058] The ball screw can be inserted into the movable block, and the side wall of the movable block can fit and slide against the inner side wall of the first slide groove 53. The side of the movable block away from the bottom wall of the first slide groove 53 can be fixedly connected to the mounting bracket body 211. When the first drive motor drives the ball screw to rotate, the movable block can drive the measuring mechanism to move along the extension direction of the first slide groove 53 (i.e., the first direction).

[0059] Along the second direction, the side of the movable block opposite to the handheld mechanism may have a rotating base. The rotating base is rotatable relative to the movable block around the second direction. The rotating base is fixedly connected to the mounting frame body 211, and the rotating shaft extends along the second direction and is fixedly connected to the rotating base. A second drive motor may be fixed to the side of the movable block, and the output shaft of the second drive motor may be connected to the rotating shaft for transmission. When the second drive motor is started, it can drive the rotating shaft to rotate around the second direction, thereby driving the measuring mechanism to rotate synchronously.

[0060] Both the first drive motor and the second drive motor can communicate with the controller. When the positioning mechanism 60 detects a deviation in the relative position of the measuring mechanism and the cold screen tube 30 along the first direction, the controller can control the first drive motor and the second drive motor to start respectively, so that the cold screen tube 30 is in the middle position between the two rollers 22.

[0061] The position of the measuring mechanism can be adjusted by moving the connecting mechanism 70 along the first direction and rotating it around the second direction, so that the cold screen tube 30 is always in the middle position between the two rollers 22. This eliminates the need for operators to manually adjust the posture of the handheld mechanism or move the entire nuclear fusion cold screen tube plate gap measuring device 10, which helps reduce the risk of measurement interruption caused by manual adjustment of the measuring mechanism position and helps ensure the continuity of the measurement process.

[0062] The connecting mechanism 70 drives the measuring mechanism to move along the first direction, which allows the nuclear fusion cold screen tube-plate gap measuring device 10 to adapt to the positional shift of the cold screen tube 30 along the first direction, ensuring that the cold screen tube 30 is always in the middle position between the two rollers 22. The connecting mechanism 70 drives the measuring mechanism to rotate along the second direction, which allows the nuclear fusion cold screen tube-plate gap measuring device 10 to adapt to different orientation angles of the cold screen tube 30, which helps to improve the versatility of the nuclear fusion cold screen tube-plate gap measuring device 10.

[0063] In some examples of embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 3 As shown, the handheld mechanism includes a connecting frame 51 and a handle 52. The connecting frame 51 is connected to the mounting frame 21, and the handle 52 is disposed on the connecting frame 51 and extends along a first direction.

[0064] The connecting frame 51 can be made of materials such as steel or aluminum alloy, and can be formed by methods such as mold casting or machining. The grip 52 can include a grip body and a covering material. The covering material can be made of elastic material and can cover the grip body to improve grip comfort.

[0065] As one embodiment, the handle 52 can be fixed to the connecting frame 51 by fasteners such as bolts or clips. As another embodiment, the handle 52 can be integrally formed with the connecting frame 51. The operator can adjust the pushing direction of the nuclear fusion cold screen tube-plate gap measuring device 10 by holding the handle 52, which helps to improve the convenience of the nuclear fusion cold screen tube-plate gap measuring device 10. The handle 52 is located on the connecting frame 51 and extends along the first direction, which helps to reduce the risk of the operator's hand obstructing the cold screen tube assembly space 221 when holding the handle 52, and also helps to reduce the risk of the operator's hand colliding with the cold screen tube 30, cold screen plate 40 or components of the measuring mechanism, which helps to improve the operational safety of the nuclear fusion cold screen tube-plate gap measuring device 10.

[0066] In some examples of embodiments of the present invention, such as Figure 2 As shown, the connecting frame 51 includes: a first plate 511 and two second plates 512, the two second plates 512 are opposite to each other and spaced apart along a first direction, a handle 52 is connected between the two second plates 512, and the first plate 511 is connected between the two second plates 512 and connected to the mounting frame 21.

[0067] In one embodiment, the grip 52 can be connected between the two second plates 512 using fasteners such as bolts or clips. In another embodiment, along the first direction, each of the two opposite sidewalls of the two second plates 512 can have a second mounting groove, into which the grip 52 can be embedded. In yet another embodiment, the grip 52 can be integrally formed with the two second plates 512. Figure 1 , Figure 2 , Figure 3 As shown, this application uses the example of the grip 52 being integrally formed with two second plates 512 for illustration.

[0068] As an example, such as Figure 2 As shown, the first plate 511 can be integrally formed with the two second plates 512, that is, the connecting frame 51 and the handle 52 are integrally formed, and the hand-held mechanism is a single piece. The two second plates 512 are arranged relatively spaced apart along the first direction, and the handle 52 is respectively connected to the first plate 511 between the two second plates 512. This design method can enhance the deformation resistance of the connecting frame 51, which helps to reduce the risk of deformation of the connecting frame 51 when the operator holds the handle 52 to push the nuclear fusion cold screen tube plate gap measuring device 10. It also helps to enhance the structural stability of the nuclear fusion cold screen tube plate gap measuring device 10, improve the space utilization of the nuclear fusion cold screen tube plate gap measuring device 10, and improve the structural compactness of the nuclear fusion cold screen tube plate gap measuring device 10.

[0069] For example, the operator holds the handle 52 of the handheld mechanism and places the two rollers 22 of the measuring mechanism against the cold shield plate 40, so that the cold shield tube 30 is located within the cold shield tube assembly space 221 between the two rollers 22, and the cold shield tube 30 is located in the middle position between the two rollers 22. The controller controls the nuclear fusion cold shield tube plate gap measuring device 10 to start, and the operator pushes the handle 52 to drive the measuring mechanism to move, and the rollers 22 roll on the cold shield plate 40.

[0070] As the roller 22 rolls on the cold shield plate 40, the pressure detection element 80, which abuts against the cold shield plate 40, can detect pressure information and transmit it to the controller. The controller can trigger the light emitting unit 23 at the corresponding position to emit a light signal parallel to the first direction based on the pressure information. At least a portion of the light signal can pass through the gap between the cold shield tube 30 and the cold shield plate 40 and be received by the light receiving unit 24 of the other roller 22. The light receiving unit 24 can transmit the collected light length information to the controller, and the controller can calculate the actual gap size between the cold shield tube 30 and the cold shield plate 40 at the current measurement position.

[0071] Simultaneously, the positioning mechanism 60 can continuously measure the relative position of the measuring mechanism and the cold screen tube 30 along the first direction. When the controller detects a shift in the relative position of the measuring mechanism and the cold screen tube 30 along the first direction, the controller can send an adjustment command to the connecting mechanism 70. After receiving the adjustment command, the connecting mechanism 70 can move along the first direction or rotate around the second direction, driving the mounting bracket body 211 and the entire measuring mechanism to move along the first direction or rotate around the second direction until the cold screen tube 30 returns to the middle position between the two rollers 22.

[0072] Other configurations and operations of the nuclear fusion cold screen tube sheet gap measuring device 10 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A device for measuring the gap between tube sheets in a nuclear fusion cooling screen, characterized in that, include: The measuring mechanism includes: a mounting frame (21), a light emitting part (23), a light receiving part (24), and two rollers (22). The two rollers (22) are opposite to each other and spaced apart along a first direction to form a cold screen tube assembly space (221) between the two rollers (22). The two rollers (22) are rotatably disposed on the mounting frame (21) about the first direction. The light emitting part (23) and the light receiving part (24) are respectively disposed on the end faces of the two rollers (22) facing each other. The light emitting part (23) extends radially along the corresponding roller (22). The light emitting part (23) and the light receiving part (24) are opposite to each other along the first direction. The rollers (22) are adapted to roll on the cold screen plate (40). The controller is communicatively connected to both the light emitting unit (23) and the light receiving unit (24), and is configured to determine the gap between the cold screen tube and the cold screen plate (40) based on the light information received by the light receiving unit (24).

2. The nuclear fusion cold screen tube sheet gap measuring device according to claim 1, characterized in that, The nuclear fusion cold screen tube sheet gap measuring device further includes: multiple pressure detection elements (80), multiple light emitting parts (23), multiple light emitting parts (23) are arranged sequentially along the circumference of the corresponding rollers (22), multiple pressure detection elements (80) are provided on the outer peripheral wall of the rollers (22) where the light emitting parts (23) are provided, multiple pressure detection elements (80) are arranged sequentially along the circumference of the corresponding rollers (22), and multiple pressure detection elements (80) and multiple light emitting parts (23) correspond one-to-one, multiple pressure detection elements (80) are all communicatively connected to the controller, and the controller is further configured to control the corresponding light emitting parts (23) to emit light parallel to the first direction according to the pressure information detected by the pressure detection elements (80).

3. The nuclear fusion cold screen tube sheet gap measuring device according to claim 2, characterized in that, The pressure sensing element (80) extends along the axial direction of the corresponding roller (22).

4. The nuclear fusion cold screen tube sheet gap measuring device according to any one of claims 1-3, characterized in that, The nuclear fusion cold screen tube sheet gap measuring device (10) further includes: a handheld mechanism, the handheld mechanism and the measuring mechanism are arranged along the second direction, the handheld mechanism and the mounting frame (21) are connected, the handheld mechanism is used to drive the measuring mechanism to move, and the first direction and the second direction are perpendicular.

5. The nuclear fusion cold screen tube sheet gap measuring device according to claim 4, characterized in that, The mounting bracket (21) includes a mounting bracket body (211) and two mounting rods (212). The two mounting rods (212) are opposite to each other and spaced apart along the first direction and both extend along the second direction. Along the second direction, the two mounting rods (212) are located on the same side of the mounting bracket body (211) and are both fixed to the mounting bracket body (211). Each mounting rod (212) has a roller (22) at its end away from the mounting bracket body (211). The hand-held mechanism is located on the side of the mounting bracket body (211) away from the mounting rods (212) and is connected to the mounting bracket body (211).

6. The nuclear fusion cold screen tube sheet gap measuring device according to claim 5, characterized in that, The nuclear fusion cold shield tube-plate gap measuring device (10) further includes: a positioning mechanism (60), which is disposed on the mounting frame body (211) and located on the side of the mounting frame body (211) facing the mounting rod (212), and the positioning mechanism (60) is located between the two mounting rods (212). The positioning mechanism (60) is used to measure the relative position of the measuring mechanism and the cold shield tube (30) along the first direction when the measuring mechanism moves.

7. The nuclear fusion cold screen tube sheet gap measuring device according to claim 6, characterized in that, The positioning mechanism (60) includes a camera; or The positioning mechanism (60) includes a laser measurement mechanism.

8. The nuclear fusion cold screen tube sheet gap measuring device according to claim 6, characterized in that, The nuclear fusion cold screen tube plate gap measuring device (10) further includes: a connecting mechanism (70) connected between the mounting frame body (211) and the handheld mechanism, the positioning mechanism (60) and the connecting mechanism (70) being communicatively connected, the connecting mechanism (70) being configured to drive the measuring mechanism to move when the relative positions of the measuring mechanism and the cold screen tube (30) along the first direction are offset during the movement of the measuring mechanism, so that the cold screen tube (30) is in the middle position between the two rollers (22).

9. The nuclear fusion cold screen tube sheet gap measuring device according to claim 8, characterized in that, The connecting mechanism (70) is movably disposed on the handheld mechanism along the first direction, and the connecting mechanism (70) is also rotatably disposed on the handheld mechanism about the second direction, and the connecting mechanism (70) is fixed to the mounting frame body (211).

10. The nuclear fusion cold screen tube sheet gap measuring device according to claim 4, characterized in that, The handheld mechanism includes a connecting frame (51) and a handle (52), the connecting frame (51) and the mounting frame (21) being connected, and the handle (52) being disposed on the connecting frame (51) and extending along the first direction.

11. The nuclear fusion cold screen tube sheet gap measuring device according to claim 10, characterized in that, The connecting frame (51) includes: a first plate (511) and two second plates (512), the two second plates (512) being opposite to each other and spaced apart along the first direction, the handle (52) being connected between the two second plates (512), and the first plate (511) being connected between the two second plates (512) and connected to the mounting frame (21).

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