Hydraulic Characteristic Test Device and Method for Components of an Irradiation Device

Abstract

The present invention discloses a hydraulic characteristic test device and method for components of an irradiation device, and relates to the technical field of research on thermal hydraulic characteristics of irradiation devices. The device includes a sleeve assembly, a water inlet pipe assembly, and a drive assembly. The sleeve assembly is used to provide a space for testing the test assembly; the water inlet pipe assembly includes a water inlet pipe and a pressure measuring tube. The water inlet pipe has an inlet and an outlet that are interconnected, and the pressure measuring tube has a measuring end that forms an inlet measurement point at a first joint and a measuring end that forms an outlet measurement point at a second joint; the method is implemented based on the device. This device and method circumvent the shortcomings of traditional hydraulic test of characteristics, such as the main structure being complex and bulky, and the need for frequent disassembly and assembly according to different test conditions. It achieves the advantages of simple disassembly and assembly at the beginning and end of the test and no need for frequent replacement during the intermediate process. It also meets the advantages of more measurement verification dimensions, thereby improving the reliability of the measurement results.

Description

Technical Field

[0001] The present invention relates to the technical field of research on thermal hydraulic characteristics of irradiation devices, and in particular to a device and method for testing the hydraulic characteristics of components of an irradiation device. Background Art

[0002] As the absolute carrier for nuclear fuel irradiation testing, the irradiation device plays an important role in irradiation technology research and irradiation testing. The core of the irradiation device design is to meet the thermal and hydraulic requirements of the test. This requires improvements to the mechanical structure to achieve the flow rate, flow velocity, temperature and other indicators required by the test. Generally speaking, the design process of the irradiation device mainly includes theoretical calculations, CFD modeling calculations, test piece design, hydraulic and thermal testing, formal device mechanical design, device processing and assembly, etc. In order to ensure the rationality of the formal device design and verify the theoretical calculations, the design of the test piece and the hydraulic characteristics test of the test piece are crucial.

[0003] Existing hydraulic property tests of test pieces are mainly carried out by attaching them to formal devices, or by making slight modifications to the formal devices. This results in a relatively complex and bulky overall structure, and insufficient verification of the device functions, which leads to complex test disassembly and assembly processes and low reliability of test results.

[0004] In view of this, this application is hereby filed. Summary of the Invention

[0005] A first object of the present invention is to provide a hydraulic properties test device for irradiation device components. The test device can be directly incorporated into the test fixture of the irradiation device. After being inserted into place, it is fixed to each other by flanges, thereby achieving the purpose of convenient assembly and disassembly during the test process. At the same time, by arranging inlet and outlet measurement points on the front and rear sides of the test assembly, the test results are more reliable.

[0006] The second object of the present invention is to provide a method for testing the hydraulic properties of components of an irradiation device. This method is implemented using the above-mentioned test device, and the hydraulic properties test is directly carried out by being incorporated into the test circuit of the irradiation device. Multiple or multiple rounds of tests can be completed simply by controlling the circuit pressure and the pressure inside the device. There is no need to repeatedly replace the test device to obtain multiple sets of test data, which meets the advantages of convenient operation and more reliable test results.

[0007] The embodiment of the present invention is achieved as follows:

[0008] In a first aspect, a hydraulic characteristic test device for an irradiation device component includes a sleeve assembly, a water inlet pipe assembly and a drive assembly, the sleeve assembly includes an inner sleeve and a first joint and a second joint respectively connected to the two ends of the inner sleeve, the inner cavities of the inner sleeve, the first joint and the second joint are interconnected, and the inner cavity of the inner sleeve is used to provide a space for testing the test assembly; wherein, the test assembly includes an irradiation device component to be subjected to a hydraulic characteristic test; the water inlet pipe assembly includes a water inlet pipe, a guide pipe and a pressure measuring pipe, the water inlet pipe is connected to the irradiation device through a flange, the water inlet pipe has a water inlet and a water outlet that are interconnected, the guide pipe is connected and connected between the water inlet pipe and the first joint so that water can flow into the inner cavity of the first joint through the water inlet; the pressure measuring pipe has a measuring end forming an inlet measurement point at the first joint and a measuring end forming an outlet measurement point at the second joint; the drive assembly includes a driving part and an action part, the action part is slidably located in the water inlet pipe, and the driving part is used to drive the action part to slide to achieve full or partial blocking of the water inlet.

[0009] In an optional embodiment, a mixer, a first support tube and a second support tube are provided in the inner sleeve, the first support tube and the second support tube are respectively supported at both ends of the test assembly, and the first support tube is arranged close to the water inlet, and the mixer is installed between the test assembly and the second support tube.

[0010] In an optional embodiment, a throttle plug is provided in the second joint.

[0011] In an optional embodiment, the test assembly further includes a first end fixing plate, a second end fixing plate and a support rod, the first end fixing plate and the second end fixing plate are respectively installed at both ends of the irradiation device component, and the first end fixing plate and the second end fixing plate are both provided with water holes, and the water holes of the first end fixing plate, the gap between the irradiation device components and the water holes of the second end fixing plate constitute a circulation gap; the support rod is detachably connected between the first end fixing plate and the second end fixing plate, and the support rod is located in the circulation gap.

[0012] In an optional embodiment, the test assembly further includes an intermediate fixing plate having a hole or groove for constraining the position of the irradiation device components, and the support rod is provided with a fastener for fixing the relative distance between the intermediate fixing plate and the first end fixing plate or the second end fixing plate.

[0013] In an optional embodiment, the sleeve assembly also includes an outer sleeve, which is coaxially arranged on the outside of the inner sleeve, and an annular cavity is formed between the inner wall of the outer sleeve and the outer wall of the inner sleeve. End sleeves are fixed between the outer sleeve and the inner sleeve, respectively sealing the end faces on both sides of the annular cavity, and one of the end sleeves is arranged with an air hole connected to the annular cavity.

[0014] In an optional embodiment, the driving part includes a driving screw, a connecting sleeve and a bracket assembly, the bracket assembly is fixed on the flange, and the bracket assembly has a screw hole that cooperates with the driving screw thread, one end of the driving screw is detachably fixedly connected to the inner hole of the connecting sleeve, the action part includes a flow regulating shaft and a blocking block, the blocking block is slidably arranged in the inner cavity of the water inlet pipe, one end of the flow regulating shaft is rotatably matched with the inner hole of the connecting sleeve, and the other end passes through the flange and extends into the water inlet pipe and is detachably connected to the blocking block, and the driving screw is rotated so that the flow regulating shaft drives the blocking block to slide, thereby fully or partially blocking the water inlet.

[0015] In an optional embodiment, a fixing buckle is arranged in the connecting sleeve, and one end of the flow regulating shaft is detachably connected to the fixing buckle.

[0016] In a second aspect, a method for testing hydraulic properties of irradiation device components is provided, using the aforementioned hydraulic properties testing device for irradiation device components. The method comprises the following steps:

[0017] S1: After assembling and connecting the casing assembly and the water inlet pipe assembly, connect them to the loop tooling flange through the flange so that the second joint is located inside the grid plate of the loop tooling;

[0018] S2: Connect the pressure measuring tube to the pressure measuring system and control the water inlet to be fully open so that the water inlet is fully connected to the circuit;

[0019] S3: Continuously fill the circuit with deionized water, start the circuit and adjust the pressure range of the circuit to 0.3-0.6MPa;

[0020] S4: Increase the circuit pressure and adjust the circuit pressure to 1.4MPa-1.65MPa. Control the pressure difference between the first joint and the second joint in the sleeve assembly to 350KPa. Control the opening of the water inlet by driving the assembly to decrease in sequence. Record the opening size of the water inlet and the corresponding water inlet flow rate data in each test.

[0021] S5: Repeat step S4, and based on step S4, control the pressure difference between the first joint and the second joint in the casing assembly to be 400 kPa;

[0022] S6: Based on the pressure measurement data obtained by the pressure measuring tube during each test, the screening of the irradiation device components is completed.

[0023] In an optional embodiment, in step S4, controlling the opening of the water inlet by the driving component to decrease in sequence includes the following steps: within the section of 0-0.75 times the total adjustment stroke, the adjustment interval is 2 mm; within the section of 0.75-0.875 times the total adjustment stroke, the adjustment interval is 1 mm; within the section of 0.875-1 times the total adjustment stroke, the adjustment interval is 0.5 mm.

[0024] The beneficial effects of the embodiments of the present invention are:

[0025] An embodiment of the present invention provides a hydraulic characteristics test device for irradiation device components. The test device uses a sleeve assembly to accommodate the test assembly. The sleeve assembly is flange-connected to the irradiation device through a water inlet pipe assembly. The direct connection method can meet the structural basis of convenient disassembly and assembly. At the same time, by configuring a drive assembly to adjust the water inlet, the entire test can be carried out multiple times or multiple rounds under different parameter conditions without replacing the same device, making the entire test process more convenient to operate. In addition, by arranging inlet and outlet measurement points on the front and rear sides of the test assembly, the test verification dimensions are increased, thereby improving the reliability of the test results.

[0026] An embodiment of the present invention provides a method for testing the hydraulic characteristics of irradiation device components. This method is implemented using the above-mentioned test device. On the basis of directly incorporating the device into a circuit, the hydraulic characteristics test of the irradiation device components in the test assembly is completed by controlling the water flow pressure of the circuit and the pressure difference within the test device. Due to the adjustability of the circuit pressure, the adjustability of the water inlet opening and the adjustability of the flow rate, it is possible to meet the hydraulic test requirements under various conditions or scenarios. There is no need to repeatedly or frequently replace the test device to screen irradiation device components that meet the requirements, making the entire test process more convenient and efficient. At the same time, by obtaining measurement data at the inlet measurement point and the outlet measurement point, comprehensive screening is performed based on this measurement data, making the final screening result more reliable.

[0027] In general, the hydraulic characteristics test device and method for irradiation device components provided by the embodiments of the present invention avoid the shortcomings of traditional hydraulic characteristics tests, such as the complex and bulky main structure and the need for frequent disassembly and assembly according to different test requirements. It achieves the advantages of simple disassembly and assembly at the beginning and end of the test and no need for frequent replacement during the intermediate process. At the same time, it also meets the advantage of more measurement verification dimensions, thereby improving the reliability of measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the overall structure of the test device provided in an embodiment of the present invention;

[0030] Figure 2 A schematic structural diagram of a driving unit provided in an embodiment of the present invention;

[0031] Figure 3 A schematic structural diagram of a bracket assembly provided in an embodiment of the present invention;

[0032] Figure 4 A schematic structural diagram of a sleeve assembly provided in an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of the structure of the test assembly provided in an embodiment of the present invention.

[0034] Icons: 1-driving part; 2-bracket assembly; 3-flange; 4-acting part; 5-water inlet pipe; 6-guide pipe; 7-first joint; 8-sleeve assembly; 9-test assembly; 10-mixer; 11-second support pipe; 12-second joint; 13-throttle plug; 14-pressure measuring system; 15-pressure measuring tube; 21-nut fixing plate; 22-support plate; 81-first sleeve; 82-inner sleeve; 83-outer sleeve; 84-end sleeve; 85-second sleeve; 91-first end fixing plate; 92-middle fixing plate; 93-support rod; 94-irradiation device component; 101-driving screw; 102-connecting sleeve; 103-fixing buckle. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0038] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0040] Example 1

[0041] See also Figure 1 and Figure 4 The present embodiment provides a hydraulic characteristic test device for an irradiation device component, comprising a sleeve assembly 8, a water inlet pipe assembly, and a drive assembly. The sleeve assembly comprises an inner sleeve 82 and a first joint 7 and a second joint 12 respectively connected at both ends of the inner sleeve 82. The inner sleeve 82, the first joint 7, and the second joint 12 are in the form of a cylindrical body, and the inner cavities of the inner sleeve 82, the first joint 7, and the second joint 12 are interconnected, thereby providing space for deionized water to flow. The inner cavity of the inner sleeve 82 is used to provide a space for testing the test assembly 9, that is, the test assembly 9 is placed in the space through which the deionized water flows, thereby facilitating the completion of the hydraulic characteristic test. The test assembly 9 includes an irradiation device component 94 to be subjected to the hydraulic characteristic test. The irradiation device component 94 mainly refers to a simulation component used to make the irradiation device. It is crucial to conduct a hydraulic characteristic test on the simulation component.

[0042] The water inlet pipe assembly includes a water inlet pipe 5, a guide pipe 6 and a pressure measuring tube 15. The water inlet pipe 5 is connected to the irradiation device through a flange 3, that is, the water inlet pipe 5 is integrated with a flange 3, and the flange 3 is used to connect with the irradiation device (in the actual installation process, the irradiation device is installed in the loop tooling, and the loop is connected to the loop tooling inlet and outlet to form a closed loop, making the loop tooling equivalent to a container), so that the entire test device can be directly incorporated into the actual loop environment for testing. It only needs to be initially installed and disassembled by using the flange 3, which greatly improves the convenience of assembly and disassembly. The water inlet pipe 5 has an interconnected water inlet and outlet, wherein the water inlet can be arranged at the end or side wall of the water inlet pipe 5. For example, in this embodiment, it is arranged on the side wall of the water inlet pipe 5. The water inlet is in the form of a hole with an aspect ratio of 2-3. The guide tube 6 is connected (for example, welded, with a contact length greater than 150 mm during welding) and communicated between the water inlet pipe 5 and the first joint 7, and mainly serves to guide deionized water so that the water flow can enter the inner cavity of the first joint 7 through the water inlet.

[0043] The pressure measuring tube 15 (the pressure measuring tube 15 is connected to the external pressure measuring system 14, and the pressure measuring system 14 adopts, for example, a differential pressure gauge with a pressure control function) has a measuring end forming an inlet measuring point at the first joint 7 and a measuring end forming an outlet measuring point at the second joint 12, which means that the inlet measuring point and the outlet measuring point are arranged at the first joint 7 and the second joint 12 respectively, so that data collection and testing can be performed on both the front and rear sides (water inlet side and outlet side) of the test component 9, which can achieve the purpose of improving the reliability of the measurement results compared with the traditional single-point measurement method. The driving component includes a driving part 1 and an action part 4, and the action part 4 is slidably located in the water inlet pipe 5. The driving part 1 is used to drive the action part 4 to slide, so as to achieve full or partial blocking of the water inlet, so as to achieve the purpose of controlling the water inlet pressure and flow, thereby meeting the requirements of hydraulic characteristic tests under more test scenario conditions.

[0044] The above technical solution achieves the goal of incorporating the hydraulic characteristics test into the loop system online. The entire test device has a simple and compact structure and is easy to assemble and disassemble, eliminating the need for frequent disassembly and replacement to meet the hydraulic characteristics test requirements under various test scenarios. Furthermore, consideration of the measurement points can improve the reliability of the measurement results. Overall, compared to traditional test devices and experimental procedures, this test device offers the advantages of convenient operation, higher work efficiency, lower testing costs, and more reliable test results.

[0045] Considering the working environment of the test assembly 9 and the issue of loosening and falling off of the irradiation device component 94 due to reduced water flow, which can lead to inaccurate test results, in this embodiment, the inner sleeve 82 is provided with a mixer 10, a first support tube, and a second support tube 11. The first and second support tubes 11 are respectively supported at both ends of the test assembly 9, thereby improving the stability of the entire test assembly 9 within the inner sleeve 82. Furthermore, in other implementation scenarios, multiple groups of test assemblies 9 can be provided and arranged along the axial direction. When the number of test assemblies 9 is reduced in different test scenarios, support tubes can be used to replace the reduced test assemblies 9, that is, to fill the missing space and ensure the stability of the installation of the remaining test assemblies 9. The first support tube is located near the water inlet, and the mixer 10 is installed between the (terminal) test assembly 9 and the second support tube 11 to perform the final flow converging and converging function, thereby ensuring the stability of the measurement data at the outlet measurement point.

[0046] In this embodiment, a throttle plug 13 is provided in the second joint 12. On the one hand, the throttle plug 13 serves the purpose of controlling and stabilizing the flow rate. On the other hand, the throttle plug 13 can also complete the hydraulic characteristic test process, thereby ultimately achieving the test and screening of the throttle plug 13 (as a simulation part of the rest of the irradiation device).

[0047] See also Figure 5 To ensure stable connection and assembly of multiple test assemblies 9 within the inner sleeve 82, this embodiment uses a single test assembly 9 as an example. The test assembly 9 further includes a first end fixing plate 91, a second end fixing plate, and a support rod 93. The first end fixing plate 91 and the second end fixing plate are respectively mounted at both ends of an irradiation device component 94. Each test assembly 9 may include multiple irradiation device components 94, namely, multiple irradiation device components 94 are arranged side by side or in a circular pattern between the first end fixing plate 91 and the second end fixing plate. Water holes are provided on each of the first end fixing plate 91 and the second end fixing plate. The water holes in the first end fixing plate 91, the gap between the irradiation device components 94, and the water holes in the second end fixing plate form a flow gap, allowing deionized water entering the water inlet to flow smoothly into this flow gap, completing the hydraulic characteristics test of the irradiation device component 94.

[0048] Through the above technical solution, when multiple groups of test assemblies 9 need to be tested, adjacent test assemblies 9 are detachably fixedly connected to each other through adjacent first end fixing plates 91 and second end fixing plates to achieve the purpose of stable connection. The test assemblies 9 at the head and tail ends are stably connected through the first support tube and the second support tube 11, thereby ensuring that the multiple groups of test assemblies 9 are stably connected and stably assembled in the inner sleeve 82. In addition, in order to meet the needs of different test scenarios, in a single group of test assemblies 9, the support rod 93 is detachably connected between the first end fixing plate 91 and the second end fixing plate, and the support rod 93 is located in the flow gap. Therefore, the size of the flow gap can be adjusted by replacing the support rod 93 with different diameters. That is, the larger the diameter of the support rod 93, the more it can occupy the gap between the irradiation device components 94, thereby increasing the pressure of the deionized water flowing through, completing the test process under the needs of different scenarios.

[0049] On the basis of the above solution, in order to make the connection between the first end fixing plate 91 and the second end fixing plate of the irradiation device component 94 more stable, please refer to Figure 5 The test assembly 9 also includes an intermediate fixing plate 92 having a hole or slot for constraining the position of the irradiation device component 94. This means that the middle portion of the longer irradiation device component 94 passes through the hole or slot provided in the intermediate fixing plate 92 to constrain its middle portion. This is particularly true in high-pressure environments, where the middle portion of the irradiation device component 94 needs to be restricted and constrained to significantly improve its stability during testing. Furthermore, the support rod 93 is provided with a fastener for securing the relative distance between the intermediate fixing plate 92 and the first end fixing plate 91 or the second end fixing plate. This means that the relative distance between the intermediate fixing plate 92 and the first end fixing plate 91 or the second end fixing plate is locked by interlocking the fastener with the hole (slot), thereby achieving connection and assembly stability for the intermediate fixing plate 92 and the entire test assembly 9.

[0050] Please refer again Figure 4The sleeve assembly 8 further includes an outer sleeve 83, which is coaxially sleeved on the outside of the inner sleeve 82, and an annular cavity is formed between the inner wall of the outer sleeve 83 and the outer wall of the inner sleeve 82, that is, the outer sleeve 83 and the inner sleeve 82 form a double-enclosed structure. An end sleeve 84 is fixed (for example, welded) between the outer sleeve 83 and the inner sleeve 82, and is respectively sealed on the end faces of the annular cavity. One of the end sleeves 84 is provided with an air hole connected to the annular cavity, through which inert gas can be injected into the annular cavity (it can be sealed promptly after the inflation is completed). The gas pressure is 0.1-0.15MPa, thereby achieving the effect of further isolating or heat-insulating the outside of the inner sleeve 82, and ensuring the anti-interference performance of the test environment in the inner sleeve 82. In addition, considering that the inner sleeve 82 can be extended to accommodate more test components 9 , the two ends of the inner sleeve 82 can be welded with a first sleeve 81 and a second sleeve 85 to achieve the purpose of extending the inner sleeve 82 .

[0051] In this embodiment, considering the stability and controllability of the gradual blocking of the water inlet, please refer to Figure 2 and Figure 3 The driving part 1 includes a driving screw 101, a connecting sleeve 102 and a bracket assembly 2. The bracket assembly 2 is fixed on the flange 3, and the bracket assembly 2 has a screw hole that is threadedly matched with the driving screw 101. Specifically, the bracket assembly 2 includes a nut fixing plate 21 and support plates 22 fixed on both sides of the nut fixing plate 21. The nut fixing plate 21 has the screw hole, and the ends of the support plates 22 on both sides are detachably fixed to the end face of the flange 3 through nuts.

[0052] After one end of the driving screw 101 passes through the screw hole, it is detachably fixedly connected to the inner hole of the connecting sleeve 102, for example, by a bolt or a pin. The action part 4 includes a flow regulating shaft and a blocking block, and the blocking block is slidably arranged in the inner cavity of the water inlet pipe 5, for example, a clearance fit is adopted between the outer wall of the blocking block and the inner wall of the water inlet pipe 5, and relative sliding is achieved by lubricating and sealing. One end of the flow regulating shaft is rotatably matched with the inner hole of the connecting sleeve 102, for example, by a bearing or by an axial limit of the end of the lubricating oil fitting, and the other end passes through the flange 3 and extends into the water inlet pipe 5 and is detachably connected to the blocking block. By rotating the driving screw 101, the flow regulating shaft drives the blocking block to slide, thereby achieving full or partial blocking of the water inlet. Through the above technical solution, the rotational motion of the driving screw 101 can be converted into the axial motion of the flow regulating shaft, so that the gradual blocking of the water inlet is more controllable and stable, especially by achieving the matching accuracy between the components, a more reliable and stable motion can be guaranteed.

[0053] In order to improve the convenience and stability of the flow regulating shaft and the connecting sleeve 102 during assembly and disassembly, in this embodiment, a fixing buckle 103 is arranged in the connecting sleeve 102, and one end of the flow regulating shaft is rotatably connected to the fixing buckle 103. Specifically, the fixing buckle 103 is fixedly installed in the connecting sleeve 102, and a stepped hole is formed inside the fixing buckle 103. The stepped hole is cut into two halves, i.e., it has an avoidance function. At the same time, the large diameter hole of the stepped hole is close to the water inlet pipe 5. The end of the flow regulating shaft matches the shape of the stepped hole. The end of the flow regulating shaft is passed through the connecting sleeve 102, and then the two halves of the fixing buckle 103 are passed through (due to the slit). Then, the flow regulating shaft is pulled back and the end is completely locked in the stepped hole (reversible disassembly). Not only does it have room for axial rotation, but radial displacement is also limited by the fixing buckle 103 and the end of the drive screw 101, thereby achieving a rotatable disassembly connection method, which is not only convenient for assembly and disassembly but also stable.

[0054] Example 2

[0055] This embodiment provides a method for testing the hydraulic properties of components of an irradiation device. The method uses the hydraulic properties testing device for components of an irradiation device described in Example 1. The method includes the following steps:

[0056] S1: After assembling and connecting the casing assembly 8 and the water inlet pipe assembly, connect them to the loop fixture flange via flange 3, positioning the second joint 12 within the loop fixture's grid plate. This means the entire test device is installed within the loop and securely attached to the loop fixture. The area above flange 3 is considered the exterior of the test device, while the area below flange 3 is considered the interior. During the simulation test, the entire test device can be considered part of the loop.

[0057] S2: Connect the pressure measuring tube 15 to the pressure measuring system 14. At this time, the water inlet is controlled to be fully open, that is, the blocking block does not block the water inlet, so that the water inlet is fully connected to the circuit. The pressure measuring system includes both a pressure gauge that displays data and a pressure control component that adjusts the pressure.

[0058] S3: Continue to fill the circuit with deionized water, start the circuit, and adjust the circuit pressure to a range of 0.3-0.6 MPa, for example, 0.5 MPa. Deionized water is added primarily to replenish the circuit, and then the circulation pump is started. At this point, the pressure control component must be used to exhaust all air from the test device.

[0059] S4: Increase the loop pressure and adjust the loop pressure to 1.4MPa-1.65MPa. Control the pressure difference between the first joint and the second joint 12 in the sleeve assembly 8 to be 350KPa. Control the opening of the water inlet by driving the assembly to decrease in sequence. Record the opening size of the water inlet and the corresponding water inlet flow data in each test one by one.

[0060] S5: Repeat step S4, and based on step S4, control the pressure difference between the first joint and the second joint 12 in the sleeve assembly 8 to 400 KPa, that is, upgrade the internal pressure to the second round of testing to obtain a flow adjustment range of 400 KPa.

[0061] S6: Based on the pressure measurement data (inlet and outlet measurement points) obtained by the pressure measuring tube 15 during each test, the irradiation device components 94 are screened. Of course, in some implementation scenarios, the throttle plug 13 can also be screened.

[0062] Through the above technical solution, the hydraulic characteristics test process of the irradiation device component 94 under different environmental conditions can be completed, so that the irradiation device component 94 that meets the actual use needs can be screened according to the measurement data. The entire test process does not require repeated replacement or disassembly of the test device, and the process of operating in various test scenarios can be completed, such as scenarios with different pressures in the control loop, scenarios with different water inlet pressures and flow rates, scenarios with different flow gap sizes, etc.

[0063] To ensure greater stability in the above operation, particularly the control of the water inlet pressure, and to control the intensity or span of the test performed on the irradiation device component 94, in step S4, the water inlet opening is sequentially reduced by the drive assembly, including the following steps: within the range of 0-0.75 times the total adjustment stroke, the adjustment interval is 2 mm; within the range of 0.75-0.875 times the total adjustment stroke, the adjustment interval is 1 mm; and within the range of 0.875-1 times the total adjustment stroke, the adjustment interval is 0.5 mm. For example, within the adjustment range of the total stroke (water inlet height) of 0-40 mm, the flow control shaft is adjusted every 2 mm from 0-30 mm, every 1 mm from 30-35 mm, and every 0.5 mm from 35-40 mm. This prevents excessive loss of measurement data due to an increase in the span of the water inlet pressure change. By adjusting the span of each flow control shaft movement, the segmental continuity and controllability of the pressure data are ensured.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, improvements, and the like made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention. It should be noted that the structures or components illustrated in the accompanying drawings are not necessarily drawn to scale, and that descriptions of known components, processing techniques, and processes are omitted to avoid unnecessarily limiting the present invention.

Claims

1. A hydraulic properties test device for irradiation device components, characterized in that: include: A sleeve assembly, the sleeve assembly comprising an inner sleeve and a first joint and a second joint respectively connected to both ends of the inner sleeve, the inner cavities of the inner sleeve, the first joint, and the second joint being interconnected, and the inner cavity of the inner sleeve being used to provide a space for testing a test assembly; wherein the test assembly comprises an irradiation device component to be subjected to a hydraulic properties test; A water inlet pipe assembly, the water inlet pipe assembly comprising a water inlet pipe, a guide pipe, and a pressure measuring pipe, the water inlet pipe being connected to the irradiation device via a flange, the water inlet pipe having a water inlet and a water outlet that are interconnected, the guide pipe being connected and communicating between the water inlet pipe and the first joint so that water can enter the inner cavity of the first joint through the water inlet; the pressure measuring pipe having a measuring end forming an inlet measurement point at the first joint and a measuring end forming an outlet measurement point at the second joint; The driving assembly includes a driving part and an action part. The action part is slidably located in the water inlet pipe. The driving part is used to drive the action part to slide to achieve full or partial blocking of the water inlet.

2. The hydraulic characteristics testing device for irradiation device components according to claim 1, characterized in that: A mixer, a first support tube and a second support tube are provided in the inner sleeve. The first support tube and the second support tube are respectively supported at two ends of the test assembly, and the first support tube is arranged close to the water inlet. The mixer is installed between the test assembly and the second support tube.

3. The hydraulic properties testing device for irradiation device components according to claim 1 or 2, characterized in that: A throttle plug is provided in the second joint.

4. The hydraulic properties testing device for irradiation device components according to claim 1 or 2, characterized in that: The test assembly further includes a first end fixing plate, a second end fixing plate, and a support rod, wherein the first end fixing plate and the second end fixing plate are respectively mounted on both ends of the irradiation device component, and the first end fixing plate and the second end fixing plate are both provided with water holes, and a flow gap is formed between the water holes of the first end fixing plate, the gap between the irradiation device components, and the water holes of the second end fixing plate; The support rod is detachably connected between the first end fixing plate and the second end fixing plate, and the support rod is located in the circulation gap.

5. The hydraulic characteristics testing device for irradiation device components according to claim 4, characterized in that: The test assembly also includes an intermediate fixing plate having a hole or groove for constraining the position of the irradiation device component, and the support rod is provided with a fastener for fixing the relative distance between the intermediate fixing plate and the first end fixing plate or the second end fixing plate.

6. The hydraulic characteristics testing device for irradiation device components according to claim 1, characterized in that: The sleeve assembly also includes an outer sleeve, which is coaxially sleeved on the outside of the inner sleeve, and an annular cavity is formed between the inner wall of the outer sleeve and the outer wall of the inner sleeve. End sleeves are fixed between the outer sleeve and the inner sleeve to respectively seal the end faces on both sides of the annular cavity, and one of the end sleeves is arranged with an air hole connected to the annular cavity.

7. The hydraulic characteristics testing device for irradiation device components according to claim 1, characterized in that: The driving part includes a driving screw, a connecting sleeve and a bracket assembly. The bracket assembly is fixed on the flange, and the bracket assembly has a screw hole that matches the thread of the driving screw. One end of the driving screw is detachably fixedly connected to the inner hole of the connecting sleeve. The action part includes a flow regulating shaft and a blocking block. The blocking block is slidably arranged in the inner cavity of the water inlet pipe. One end of the flow regulating shaft is rotatably matched with the inner hole of the connecting sleeve, and the other end passes through the flange and extends into the water inlet pipe and is detachably connected to the blocking block. The driving screw is rotated so that the flow regulating shaft drives the blocking block to slide, thereby fully or partially blocking the water inlet.

8. The hydraulic characteristics testing device for irradiation device components according to claim 7, characterized in that: A fixing buckle is arranged in the connecting sleeve, and one end of the flow regulating shaft is detachably connected to the fixing buckle.

9. A method for testing the hydraulic properties of irradiation device components, characterized in that: Using the hydraulic properties testing device for irradiation device components according to any one of claims 1 to 8, the method comprises the following steps: S1: After assembling and connecting the casing assembly and the water inlet pipe assembly, connect them to the loop tooling flange through the flange so that the second joint is located inside the grid plate of the loop tooling; S2: Connect the pressure measuring tube to the pressure measuring system and control the water inlet to be fully open so that the water inlet is fully connected to the circuit; S3: Continuously fill the circuit with deionized water, start the circuit and adjust the pressure range of the circuit to 0.3-0.6MPa; S4: Increase the circuit pressure and adjust the circuit pressure to 1.4MPa-1.65MPa. Control the pressure difference between the first joint and the second joint in the sleeve assembly to 350KPa. Control the opening of the water inlet by driving the assembly to decrease in sequence. Record the opening size of the water inlet and the corresponding water inlet flow rate data in each test. S5: Repeat step S4, and based on step S4, control the pressure difference between the first joint and the second joint in the casing assembly to be 400 kPa; S6: Based on the pressure measurement data obtained by the pressure measuring tube during each test, the screening of the irradiation device components is completed.

10. The hydraulic properties test method for irradiation device components according to claim 9, characterized in that: In step S4, the opening of the water inlet is controlled to decrease in sequence by the driving component, including the following steps: within the 0-0.75 times of the total adjustment stroke, the adjustment interval is 2 mm; within the 0.75-0.875 times of the total adjustment stroke, the adjustment interval is 1 mm; within the 0.875-1 times of the total adjustment stroke, the adjustment interval is 0.5 mm.

Images