Device and method for measuring throttling assembly of high-temperature reactor evaporator at normal temperature
By constructing a measuring device using equipment such as a water tank, pump body, and pressure transmitter at room temperature, the problems of low efficiency and high cost in measuring the pressure drop of throttling components under high temperature and high pressure are solved, realizing rapid and economical pressure drop measurement and screening, and improving the measurement pass rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI NO 1 MACHINE TOOL WORKS CO LTD
- Filing Date
- 2026-04-20
- Publication Date
- 2026-05-19
AI Technical Summary
Existing technologies for measuring the pressure drop of throttling components in high-temperature gas-cooled reactor steam generators under high temperature and high pressure conditions suffer from low measurement efficiency, long cycle time, high cost, and complex repair process.
Using common equipment such as water tanks, pump bodies, pressure transmitters, and installation mechanisms, a testing device is constructed at room temperature. The pressure drop value of the throttling components is detected by the pressure transmitter, and components that meet the requirements are screened out before high-temperature and high-pressure testing is performed.
It enables rapid room temperature calibration of throttling components, reduces the number of high-temperature and high-pressure tests, shortens the cycle, improves testing efficiency and pass rate, and reduces costs.
Smart Images
Figure CN122062891A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of high-temperature gas-cooled reactor steam generator technology, specifically to an apparatus and method for measuring the ambient temperature of a throttling assembly in a high-temperature reactor evaporator. Background Technology
[0002] High-temperature reactors, also known as high-temperature gas-cooled reactors (HTGRs), are one of the mainstream reactor types of fourth-generation advanced nuclear reactors. They use helium as a coolant and graphite as a moderator, and the reactor outlet coolant temperature can reach over 700°C, exceeding 950°C, far higher than traditional pressurized water reactors (approximately 330°C). During the operation of the HTGR steam generator, the instability of the vapor-liquid two-phase flow is one of the key risk factors affecting the safe and reliable operation of the equipment. To effectively suppress this flow instability problem and ensure the heat exchange efficiency and operational safety of the steam generator, existing technologies commonly employ a throttling component at the inlet of each heat exchange tube bundle. This throttling component, through a reasonable structural design, generates a specific pressure drop, thereby optimizing the fluid flow state within the tube bundle and preventing the occurrence of vapor-liquid two-phase flow instability.
[0003] Because there is an extremely high sensitivity between the pressure drop of a throttling assembly and its structural dimensions, even a slight deviation in structural dimensions can cause the actual pressure drop to deviate from the design requirements, thus failing to achieve the expected flow stability control effect. Therefore, to ensure that each throttling assembly meets the operational technical specifications of the high-temperature gas-cooled reactor steam generator, the actual pressure drop of each throttling assembly must be measured, and only throttling assemblies that have passed calibration can be put into assembly and use.
[0004] Currently, the industry primarily conducts voltage drop measurements on these throttling components under high-temperature and high-pressure conditions. While this calibration method can simulate the actual working environment of the throttling components, it has several inherent drawbacks. Firstly, setting up and maintaining the high-temperature and high-pressure testing conditions requires complex testing equipment and strict safety control measures, resulting in a lengthy testing process and significantly reducing the production and testing efficiency of the throttling components. Secondly, if the voltage drop of the throttling component is found to be unqualified after testing under high-temperature and high-pressure conditions, the rework process requires first restoring the testing environment to normal temperature and pressure, followed by another high-temperature and high-pressure test. This not only further extends the overall cycle but also increases the difficulty and cost of the rework operation.
[0005] Given the technical challenges of the existing technologies, optimizing the voltage drop measurement process for throttling components, reducing measurement difficulty and shortening the measurement cycle, while simultaneously improving the pass rate under high-temperature conditions and reducing the workload of high-temperature measurements, has become a pressing technical problem for those skilled in the art. Against this backdrop, developing a device capable of pre-completing the voltage drop measurement of throttling components under ambient temperature conditions, pre-screening throttling components that meet the voltage drop requirements through ambient temperature measurement, and then sending qualified products to the subsequent high-temperature measurement stage, would undoubtedly effectively solve the aforementioned technical problems. Summary of the Invention
[0006] In view of the deficiencies in the prior art, the purpose of this invention is to provide an apparatus and method for measuring the ambient temperature of the throttling assembly of a high-temperature reactor evaporator.
[0007] According to the present invention, an apparatus for measuring the ambient temperature of a throttling assembly in a high-temperature reactor evaporator includes a water tank, a pump body, a pressure transmitter, and an installation mechanism.
[0008] The water tank is connected to the inlet of the pump body through the second pipeline, the outlet of the pump body is connected to the installation mechanism through the third pipeline, and the installation mechanism is connected to the water tank through the first pipeline; The second pipeline, the third pipeline, and the first pipeline are respectively equipped with a check valve, a first valve, and a second valve; The number of installation mechanisms is one or more, and the multiple installation mechanisms are arranged in parallel and / or in series. Each installation mechanism is equipped with a pressure transmitter connected in parallel. The installation mechanism is used for the rapid installation and removal of the throttling component.
[0009] According to the present invention, a method for measuring the ambient temperature of a throttling component of a high-temperature reactor evaporator is provided. The method is calibrated using a device for measuring the ambient temperature of a throttling component of a high-temperature reactor evaporator. The device for measuring the ambient temperature of a throttling component of a high-temperature reactor evaporator includes a water tank, a pump body, a pressure transmitter, and an installation mechanism. The water tank is connected to the inlet of the pump body through the second pipeline, the outlet of the pump body is connected to the installation mechanism through the third pipeline, and the installation mechanism is connected to the water tank through the first pipeline; The second pipeline, the third pipeline, and the first pipeline are respectively equipped with a check valve, a first valve, and a second valve; The number of installation mechanisms is one or more, and the multiple installation mechanisms are arranged in parallel and / or in series. Each installation mechanism is equipped with a pressure transmitter connected in parallel. The installation mechanisms are used for the rapid installation and disassembly of the throttling component. The method for room temperature measurement of the throttling component of a high-temperature reactor evaporator includes the following steps: S1: Install one or more qualified throttling components into the mounting mechanism and obtain the pressure drop calibration point value or pressure drop calibration range value through the pressure transmitter, and use the pressure drop calibration point value or pressure drop calibration range value as the qualified calibration value. S2: Install the throttling component to be tested into the mounting mechanism, read the pressure transmitter to obtain the pressure drop value, compare the pressure drop value with the quality qualification calibration value, and the pressure drop value is considered to be qualified if it is within the quality qualification calibration value; otherwise, it is considered unqualified.
[0010] Preferably, the installation mechanism includes a first quick connector, a first clamp, a sleeve, a second clamp, and a second quick connector; One end of the throttling component is connected to a sleeve, both ends of which are equipped with flanges. One end of the sleeve is detachably connected to a first quick connector via a first clamp, and the other end of the sleeve is detachably connected to a second quick connector via a second clamp.
[0011] Preferably, the end of the throttling component is fixed inside the sleeve by screwing it in with a threaded connection.
[0012] Preferably, the two installation mechanisms arranged in series are connected by a fourth pipeline, the length of which is more than 0.5m.
[0013] Preferably, the pump body is a high-lift centrifugal pump, the high-lift centrifugal pump having a head of more than 150m and a flow rate of more than 1m³ / h.
[0014] Preferably, the first pipeline is a plastic flexible hose, the second pipeline is a stainless steel braided hose, and the third pipeline is a stainless steel pipe.
[0015] Preferably, the same set of equipment needs to be calibrated under the same conditions, which means that the flow rate, head, power, pipe diameter of the third pipeline, and opening degree of the second valve are all the same when the pump body is running.
[0016] Preferably, the mounting mechanism is fixed in position by means of a bracket.
[0017] Preferably, the first valve is a needle valve.
[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention achieves room temperature measurement of pressure drop of throttling components by using simple and common equipment such as water tanks, centrifugal pumps, check valves, and pressure transmitters. It has a simple structure, is easy and quick to operate and disassemble, and is suitable for room temperature calibration of throttling components, which greatly reduces the number of high temperature calibrations, reduces costs, shortens the overall product manufacturing cycle, and has good versatility.
[0019] 2. This invention can simultaneously calibrate multiple throttling components at room temperature, which is highly efficient and flexible. Attached Figure Description
[0020] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the process flow of the present invention; Figure 2 This is a structural schematic diagram of the cross-section of the installation mechanism; Figure 3 for Figure 2 A schematic diagram of the structural cross-section along the AA direction.
[0021] The diagram shows: Water tank 1; First pipeline 11; Second pipeline 12; Third pipeline 13; Fourth pipeline 14; Check valve 2; Pump body 3; First valve 4; Pressure transmitter 5; Installation mechanism 6; First quick connector 61; First clamp 62; Sleeve 63; Throttling component 64; Second clamp 65; Second quick connector 66; Bracket 67; Second valve 7. Detailed Implementation
[0022] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.
[0023] Example 1: This invention provides a device for room temperature measurement of a throttling assembly in a high-temperature reactor evaporator, used for the room temperature calibration of the throttling assembly 64. The device includes a water tank 1, a pump body 3, a pressure transmitter 5, and a mounting mechanism 6. The water tank 1, pump body 3, and mounting mechanism 6 are connected sequentially. The mounting mechanism 6 is used for quick installation or removal of the throttling assembly 64. Multiple mounting mechanisms 6 are provided, some arranged in series and some arranged in parallel, such as... Figure 1As shown, each mounting mechanism 6 is equipped with a pressure transmitter 5 connected in parallel. The pressure transmitter 5 is used to detect the pressure drop of the throttling component 64 configured on the mounting mechanism 6. The pressure transmitter 5 is set at a low height to ensure that the usage requirements are met. The mounting mechanism 6 is connected to the water tank 1 through the first pipeline 11, and the second valve 7 is configured on the first pipeline 11. The entire device forms a closed-loop mode, which can work continuously and greatly improves the calibration efficiency.
[0024] Specifically, the lower part of the water tank 1 is connected to the inlet of the pump body 3 through the second pipe 12, the outlet of the pump body 3 is connected to the installation mechanism 6 through the third pipe 13, the installation mechanisms 6 connected in series are connected through the fourth pipe 14, and the end installation mechanism 6 is connected to the upper part of the water tank 1 through the first pipe 11. The first pipe 11, the second pipe 12, and the third pipe 13 are respectively equipped with a check valve 2, a first valve 4, and a second valve 7. The first valve 4 is preferably a needle valve.
[0025] Furthermore, the first pipe 11 is preferably made of plastic flexible hose, the second pipe 12 is preferably made of stainless steel braided water pipe, and the third pipe 13 is connected with stainless steel pipe. The installation mechanism 6 achieves pre-fixation of its position through the bracket 67 to prevent unstable conditions such as shaking. Figure 2 As shown, this ensures the stability of the installation mechanism 6.
[0026] The present invention also provides a method for room temperature measurement of throttling components in high-temperature reactor evaporators, which uses a device for room temperature measurement of throttling components in high-temperature reactor evaporators for calibration, and includes the following steps: S1: Install one or more qualified throttling components 64 into the mounting mechanism 6 and obtain the pressure drop calibration point value or pressure drop calibration range value through the pressure transmitter 5, and use the pressure drop calibration point value or pressure drop calibration range value as the qualified calibration value. S2: Install the throttling component 64 to be tested into the mounting mechanism 6, read the pressure transmitter 5 to obtain the pressure drop value, compare the pressure drop value with the quality qualified calibration value, and if the pressure drop value is within the range of the quality qualified calibration value, it is considered to be qualified; otherwise, it is considered to be unqualified.
[0027] It should be noted that the same set of equipment needs to be calibrated under the same conditions in order to improve the calibration accuracy. The same conditions are that the flow rate, head, power, pipe diameter of the third pipeline 13, and opening degree of the second valve 7 are all the same when the pump body 3 is running. Different equipment needs to be recalibrated to meet the high precision requirements of the equipment.
[0028] Specifically, the pump body 3 is preferably a high-lift centrifugal pump. The high-lift centrifugal pump in this invention has a head of more than 150m and a flow rate of more than 1m³ / h to meet the calibration requirements of the throttling component 64.
[0029] like Figure 2 , Figure 3 As shown, the installation mechanism 6 includes a first quick connector 61, a first clamp 62, a sleeve 63, a second clamp 65, and a second quick connector 66. One end of the throttling component 64 is connected to the sleeve 63. Preferably, the end of the throttling component 64 is fixed inside the sleeve 63 by threaded engagement. Both ends of the sleeve 63 are equipped with flanges. One end of the sleeve 63 is detachably connected to the first quick connector 61 via the first clamp 62, and the other end of the sleeve 63 is detachably connected to the second quick connector 66 via the second clamp 65. Through the above structural design, on the one hand, the requirements for sealed installation can be met, and on the other hand, the assembly form of the connector and clamp can be conveniently and quickly installed and disassembled with the throttling component 64 without damaging the product. It is particularly suitable for large-scale test operations and can greatly improve the measurement efficiency of the throttling component 64.
[0030] To reduce flow interference between the two sets of throttling components 64 installation devices and to maximize the distance between them, in this embodiment, the two adjacent installation mechanisms 6 arranged in series are connected by a fourth pipe 14, the length of which is preferably more than 0.5m.
[0031] Once the circuit setup and debugging are completed, the device in this invention remains stationary and does not require modification, ensuring the stability of the ambient temperature test bench. This device not only establishes the proportional relationship between the calibration voltage drop at ambient and high temperatures, but also allows for the selection or repair of throttling orifices based on the ambient temperature calibration results, improving the first-time calibration pass rate at high temperatures and achieving cost reduction and efficiency improvement. Furthermore, this device requires high stability in voltage drop calibration and excellent measurement consistency.
[0032] Example 2: The difference between this embodiment and embodiment 1 is that the number of installation mechanisms 6 is one, which has higher measurement accuracy.
[0033] Example 3: The difference between this embodiment and embodiment 1 is that there are multiple installation mechanisms 6, and all multiple installation mechanisms 6 are arranged in parallel, which can meet the requirement of high measurement efficiency.
[0034] The working principle of this invention is as follows: First, after assembling all the equipment pipelines, install the qualified throttling component 64 into the installation mechanism 6. Obtain the qualified throttling component 64 pressure drop calibration point value or pressure drop calibration range value through the pressure transmitter 5, and use the pressure drop calibration point value or pressure drop calibration range value as the qualified calibration value.
[0035] Next, the qualified throttling component 64 is removed from the installation mechanism 6, and the throttling component 64 to be tested is installed into the installation mechanism 6. The pressure drop value of the throttling component 64 to be tested is read through the pressure transmitter 5. The measured pressure drop value is compared with the qualified quality calibration value. When the pressure drop value is within the range of the qualified quality calibration value, it is considered to be qualified; when the pressure drop value is not within the range of the qualified quality calibration value, it is considered to be unqualified.
[0036] Finally, the qualified throttling components 64 will undergo further testing under high temperature and high pressure conditions.
[0037] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0038] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.
Claims
1. A device for measuring the ambient temperature of a throttling assembly in a high-temperature reactor evaporator, characterized in that, It includes a water tank (1), a pump body (3), a pressure transmitter (5), and an installation mechanism (6); The water tank (1) is connected to the inlet of the pump body (3) through the second pipe (12), and the outlet of the pump body (3) is connected to the installation mechanism (6) through the third pipe (13). The installation mechanism (6) is connected to the water tank (1) through the first pipe (11). The second pipeline (12), the third pipeline (13), and the first pipeline (11) are respectively equipped with a check valve (2), a first valve (4), and a second valve (7); The number of the installation mechanism (6) is one or more, and the multiple installation mechanisms (6) are arranged in parallel and / or in series. Each installation mechanism (6) is connected in parallel with a pressure transmitter (5). The installation mechanism (6) is used for the quick installation and removal of the throttling component (64).
2. The apparatus for room temperature measurement of the throttling assembly of a high-temperature reactor evaporator according to claim 1, characterized in that, The installation mechanism (6) includes a first quick connector (61), a first clamp (62), a sleeve (63), a second clamp (65), and a second quick connector (66). One end of the throttling component (64) is connected to the sleeve (63), both ends of the sleeve (63) are equipped with flanges, one end of the sleeve (63) is detachably connected to the first quick connector (61) through the first clamp (62), and the other end of the sleeve (63) is detachably connected to the second quick connector (66) through the second clamp (65).
3. The apparatus for room temperature measurement of the throttling assembly of a high-temperature reactor evaporator according to claim 2, characterized in that, The end of the throttling component (64) is fixed inside the sleeve (63) by screwing it in a threaded fit.
4. The apparatus for room temperature measurement of the throttling assembly of a high-temperature reactor evaporator according to claim 1, characterized in that, The two installation mechanisms (6) arranged in series are connected by a fourth pipe (14), the length of which is more than 0.5m.
5. The apparatus for room temperature measurement of the throttling assembly of a high-temperature reactor evaporator according to claim 1, characterized in that, The first pipeline (11) is made of plastic hose, the second pipeline (12) is made of stainless steel braided hose, and the third pipeline (13) is made of stainless steel pipe.
6. A method for room temperature measurement of throttling components in high-temperature reactor evaporators, characterized in that, The device used for room temperature measurement of the throttling component of the high-temperature reactor evaporator was used for calibration. The device for room temperature measurement of the throttling component of the high-temperature reactor evaporator includes a water tank (1), a pump body (3), a pressure transmitter (5), and an installation mechanism (6). The water tank (1) is connected to the inlet of the pump body (3) through the second pipe (12), and the outlet of the pump body (3) is connected to the installation mechanism (6) through the third pipe (13). The installation mechanism (6) is connected to the water tank (1) through the first pipe (11). The second pipeline (12), the third pipeline (13), and the first pipeline (11) are respectively equipped with a check valve (2), a first valve (4), and a second valve (7); The number of the installation mechanism (6) is one or more, and the multiple installation mechanisms (6) are arranged in parallel and / or in series. Each installation mechanism (6) is connected in parallel with a pressure transmitter (5). The installation mechanism (6) is used for the rapid installation and disassembly of the throttling component (64). The method for measuring the ambient temperature of the throttling component of the high-temperature reactor evaporator includes the following steps: S1: Install one or more qualified throttling components (64) into the mounting mechanism (6) and obtain the pressure drop calibration point value or pressure drop calibration range value through the pressure transmitter (5), and use the pressure drop calibration point value or pressure drop calibration range value as the qualified calibration value; S2: Install the throttling component (64) to be tested into the mounting mechanism (6), read the pressure transmitter (5) to obtain the pressure drop value, compare the pressure drop value with the quality qualification calibration value, and the pressure drop value is considered to be qualified if it is within the range of the quality qualification calibration value; otherwise, it is considered unqualified.
7. The method for room temperature measurement of the throttling assembly of a high-temperature reactor evaporator according to claim 6, characterized in that, The installation mechanism (6) includes a first quick connector (61), a first clamp (62), a sleeve (63), a second clamp (65), and a second quick connector (66). One end of the throttling component (64) is connected to the sleeve (63), both ends of the sleeve (63) are equipped with flanges, one end of the sleeve (63) is detachably connected to the first quick connector (61) through the first clamp (62), and the other end of the sleeve (63) is detachably connected to the second quick connector (66) through the second clamp (65).
8. The method for room temperature measurement of the throttling assembly of a high-temperature reactor evaporator according to claim 6, characterized in that, The two installation mechanisms (6) arranged in series are connected by a fourth pipe (14), the length of which is more than 0.5m.
9. The method for room temperature measurement of the throttling assembly of a high-temperature reactor evaporator according to claim 6, characterized in that, The first pipeline (11) is made of plastic hose, the second pipeline (12) is made of stainless steel braided hose, and the third pipeline (13) is made of stainless steel pipe.
10. The method for room temperature measurement of the throttling assembly of a high-temperature reactor evaporator according to claim 6, characterized in that, The same set of equipment needs to be calibrated under the same conditions, which means that the flow rate, head, power, pipe diameter of the third pipeline (13), and opening degree of the second valve (7) are all the same when the pump body (3) is running.