Test method and test device

Abstract

The embodiment of the invention relates to the technical field of pump testing, in particular to a testing method and a testing device, and on the one hand, the embodiment of the invention provides the testing method which is suitable for testing the performance of an in-reactor high-temperature immersion pump prototype. On the second aspect, the embodiment of the invention provides a testing device, the testing device is suitable for testing the performance of the in-reactor high-temperature immersion pump prototype, and the testing device provides a testing environment for testing the prototype. According to the test method and device, the prototype can be tested in a sodium immersion environment under different temperature and different pressure conditions to simulate different working conditions of the sodium-cooled fast reactor, so that prototype performance tests under different working conditions are carried out, comprehensive prototype performance test data are obtained, the accuracy and reliability of a test result are improved, and the test efficiency is improved. Therefore, the performance of the high-temperature immersion pump prototype is comprehensively and accurately verified and evaluated according to the test result.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of pump testing, and in particular to a test method and a test device. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] The impurity content in the sodium coolant not only affects the hydraulic characteristics of the coolant, but also accelerates the corrosion of the reactor structural materials. In order to ensure the safe and stable operation of the sodium-cooled fast reactor, a purification system is needed to remove impurities in the sodium coolant to ensure that the quality of the sodium coolant meets the index requirements. The key purification components of the reactor system that adopts the in-pile purification technology route are arranged inside the reactor vessel, so that the sodium coolant of the first circuit is purified inside the reactor vessel. As one of the most critical equipment in the in-pile purification system, the in-pile immersion pump needs to establish corresponding test equipment and test methods for its performance testing during its research and development process to simulate and provide an effective test environment to verify the performance level of the high-temperature immersion pump prototype. Summary of the invention

[0004] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0005] In a first aspect, an embodiment of the present application provides a test method, which is suitable for testing the performance of an in-pile high-temperature immersion pump prototype, and comprises the following steps: S00: processing the test environment of the prototype so that the sodium is in an inert gas protection range during the test; S10: inputting sodium into the test environment; S20: adjusting the test environment so that the test environment simulates the sodium flow environment in the stack container; S30: testing the prototype under different temperatures and pressures in the sodium flow environment to obtain the performance characteristics of the prototype; S40: determining the performance characteristic curve of the prototype based on the performance characteristics of the prototype; S50: determining whether the prototype meets the technical requirements based on the performance characteristic curve of the prototype.

[0006] In a second aspect, an embodiment of the present application provides a test device, which is suitable for testing the performance of an in-pile high-temperature immersion pump prototype. The test device provides a test environment for testing the prototype, and includes: a sodium storage part, which is configured to provide metallic sodium for the test environment; a prototype container, which provides a test environment for testing the prototype, and the prototype is installed in the prototype container; a sodium electromagnetic pump, which is configured to drive the metallic sodium in the sodium storage part into the test environment; a heating component, which is configured to heat a portion that needs to be heated during the test so that the temperature of the sodium meets the test requirements; a cooling component, which is configured to cool a portion that needs to be cooled during the test so that the temperature of the sodium meets the test requirements; and a monitoring component, which is configured to monitor the performance characteristics of the prototype during the test.

[0007] The test method and device in the embodiments of the present application simulate the actual sodium flow environment in a sodium-cooled fast reactor, and on this basis adjust the temperature and pressure of the test environment, test the prototype under different temperature and pressure conditions in the sodium flow environment, and immerse the prototype in the sodium environment to simulate different operating conditions of the sodium-cooled fast reactor, thereby carrying out prototype performance testing under different operating conditions, obtaining comprehensive prototype performance test data, improving the accuracy and reliability of the test results, and thus comprehensively and accurately verifying and evaluating the performance of the high-temperature immersion pump prototype based on the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Other objects and advantages of the present application will become apparent from the following description of the embodiments of the present application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the present application.

[0009] Figure 1 is a flow chart of a test method according to one embodiment of the present application;

[0010] Figure 2 It is a schematic diagram of the structure of a test device according to an embodiment of the present application.

[0011] Description of reference numerals:

[0012] 10. Sodium storage parts; 20. Prototype container; 21. Prototype; 22. Sodium inlet; 23. Sodium outlet; 30. Sodium electromagnetic pump; 40. Cooling component; 50. Vacuum pumping parts; 60. Inert gas supply parts.

[0013] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0014] Exemplary embodiments of the present application will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this application.

[0015] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.

[0016] The inventors of the present application discovered that, since the internal environment of a sodium-cooled fast reactor is relatively complex and the environmental conditions inside the reactor will change under different operating conditions, the research and development of a high-temperature immersion pump needs to consider fully meeting its use requirements in the complex and changeable environment of a sodium-cooled fast reactor. However, there is currently no test device and test method that can simulate the environmental conditions under different operating conditions so as to comprehensively test and accurately evaluate the performance of a high-temperature immersion pump.

[0017] Based on this, an embodiment of the present application provides a test method, which is suitable for testing the performance of a prototype of an in-pile high-temperature immersion pump. Figure 1 As shown, Figure 1 A flow chart showing a test method according to an embodiment of the present application is shown, and the method includes the following steps S00 to S50:

[0018] S00: Treat the test environment of the prototype so that the sodium is in the inert gas protection range during the test.

[0019] S10: Input sodium into the test environment.

[0020] S20: Adjusting the test environment so that the test environment simulates the sodium flow environment in the stack container.

[0021] S30: Test the prototype under different temperatures and pressures in a sodium flow environment to obtain the performance characteristics of the prototype.

[0022] S40: Determine a performance characteristic curve of the prototype according to the performance characteristics of the prototype.

[0023] S50: Determine whether the prototype meets the technical requirements based on the performance characteristic curve of the prototype.

[0024] The test method provided in the embodiments of the present application simulates the actual sodium flow environment in a sodium-cooled fast reactor, and on this basis adjusts the temperature and pressure of the test environment, tests the prototype under different temperature and pressure conditions in the sodium flow environment, and immerses the prototype in the sodium environment to simulate different operating conditions of the sodium-cooled fast reactor, thereby carrying out prototype performance tests under different operating conditions, obtaining comprehensive prototype performance test data, improving the accuracy and reliability of the test results, and thus comprehensively and accurately verifying and evaluating the performance of the high-temperature immersion pump prototype based on the test results.

[0025] In some embodiments, in step S00, it further includes:

[0026] S01: Evacuate the test environment and replace it with inert gas.

[0027] S02: Testing the water and oxygen content of the test environment, and repeating S01-S02 until the water and oxygen content of the test environment is lower than a predetermined value.

[0028] In this embodiment, the test environment is repeatedly evacuated and replaced with an inert gas until the water and oxygen content of the test environment reaches a predetermined standard, so as to create a gas atmosphere that meets the test needs and ensure that during the test, the sodium input into the test environment is in an inert gas protection atmosphere, thereby improving the test accuracy and enhancing the reliability of the test results.

[0029] In some embodiments, in step S10, it further includes:

[0030] S11: Heat the test environment to the temperature required for sodium addition.

[0031] S12: Providing a predetermined amount of sodium to the test environment using pressure difference and power.

[0032] In this embodiment, the test environment is heated to the temperature required for sodium introduction, so that a pressure difference is generated inside and outside the test environment, so as to provide a predetermined amount of sodium to the test environment in coordination with power, thereby improving the sodium supply efficiency to the test environment.

[0033] In step S12, a predetermined amount of sodium to be input into the test environment is determined according to test requirements, so that the amount of sodium in the test environment is sufficient for the test.

[0034] In some embodiments, after step S10, the front and rear valves of the prototype are closed after the sodium supply is stopped, and the prototype and the test environment are preheated to a predetermined temperature to simulate the actual temperature inside the sodium-cooled fast reactor.

[0035] In some embodiments, in step S30, the pressure of the test environment is set, and the regulating valve of the test environment is in a fully open state, the prototype is started, and the input voltage of the prototype is set so that the prototype drives sodium to circulate and enters the initial state of the test.

[0036] In some embodiments, in step S30, the input voltage of the prototype is increased by a predetermined increment and operated for a predetermined time at each input voltage, so as to determine whether the flow of the prototype can remain stable under the condition that the voltage of the prototype remains stable, thereby facilitating accurate evaluation of the performance of the prototype.

[0037] Specifically, the input voltage of the prototype is increased by a predetermined increment until the target voltage value is reached. After each increase in the input voltage, the prototype is operated for a predetermined time at the voltage, and the flow rate change of the current prototype is recorded to determine whether the flow rate of the prototype is stable at the voltage based on the flow rate change of the current prototype. Moreover, based on multiple input voltages and the flow rates of the corresponding prototypes at the voltages, it can be determined whether the change in the flow rate of the prototype is in a stable state when the input voltage of the prototype is increased by a predetermined increment.

[0038] In some embodiments, in step S30, under a predetermined test pressure, the maximum flow rate and the minimum flow rate of the prototype are determined, and multiple flow values ​​between the minimum flow rate and the maximum flow rate are selected. At the flow rates of multiple flow values, the performance characteristics of the prototype are determined, so as to obtain more comprehensive prototype performance test data by conducting performance tests on the prototype under different flow conditions, thereby comprehensively and accurately verifying and evaluating the performance of the prototype.

[0039] Specifically, in step S30, under a predetermined test environment pressure, the maximum flow rate and the minimum flow rate of the prototype are determined, and multiple flow rate values ​​between the minimum flow rate and the maximum flow rate are selected. By adjusting the opening of the regulating valve of the test environment, the flow rate of the prototype is made to reach multiple flow rate values ​​in order from large to small, and each time the flow value is reached, the input voltage of the prototype is increased by a predetermined increase, and it is run for a predetermined time at each input voltage, and the performance test data of the prototype such as flow rate, pressure before pump, pressure after pump, head, three-phase voltage, three-phase current, power factor, three-phase winding temperature, immersion pump groove temperature, etc. are recorded at multiple flow values, so as to determine the performance characteristics of the prototype.

[0040] Furthermore, in step S30, the temperature and pressure of the test environment can be adjusted accordingly according to the actual temperature and pressure changes in the sodium-cooled fast reactor under different operating conditions, and the prototype can be tested repeatedly to obtain performance test data of the prototype under different temperature and pressure conditions, comprehensively obtain the performance characteristics of the prototype, improve the reliability of the test results, and facilitate a comprehensive and accurate evaluation of the performance of the high-temperature immersion pump prototype.

[0041] In step S40, the performance test data of the prototype, such as flow rate, pressure before pump, pressure after pump, head, three-phase voltage, three-phase current, power factor, three-phase winding temperature, immersion pump groove temperature, etc., under multiple flow values ​​obtained in step S30 can be processed to obtain the relationship curve between flow rate and head, the relationship curve between flow rate and power, and the relationship curve between flow rate and efficiency of the prototype, so as to quantify the performance of the prototype according to the relationship curve, so as to evaluate whether it meets the technical requirements.

[0042] The embodiment of the present application also provides a test device, which is suitable for testing the performance of a prototype of an in-pile high-temperature immersion pump. The test device provides a test environment for testing the prototype, such as Figure 2 As shown, Figure 2 A schematic structural diagram of a test device according to an embodiment of the present application is shown, the device comprising: a sodium storage member 10, the sodium storage member 10 is configured to provide metallic sodium for a test environment; a prototype container 20, the prototype container 20 provides a test environment for a prototype 21 to be tested, and the prototype 21 is installed in the prototype container 20; a sodium electromagnetic pump 30, the sodium electromagnetic pump 30 is configured to drive the metallic sodium in the sodium storage member 10 into the test environment; a heating component, the heating component is configured to heat a portion that needs to be heated during the test so that the temperature of the sodium meets the test requirements; a cooling component 40, the cooling component 40 is configured to cool a portion that needs to be cooled during the test so that the temperature of the sodium meets the test requirements; a monitoring component, the monitoring component is configured to monitor the performance characteristics of the prototype during the test.

[0043] The test device provided in the embodiment of the present application simulates the actual sodium flow environment in a sodium-cooled fast reactor through the above-mentioned settings, immerses the prototype 21 in the sodium environment, and on this basis, adjusts the heating temperature of the heating component and the internal pressure of the prototype container 20 to control the temperature and pressure of the test environment, so as to test the prototype 21 under different temperature and pressure conditions, simulate different operating conditions of the sodium-cooled fast reactor, and thus carry out performance testing of the prototype 21 under different operating conditions, and use the monitoring component to obtain comprehensive performance test data of the prototype 21, so as to determine whether the prototype 21 meets the technical requirements based on the performance test data, and comprehensively and accurately verify and evaluate the performance of the high-temperature immersion pump prototype 21.

[0044] In some embodiments, the prototype container 20 is provided with a plurality of independent sodium inlets 22 to test the effect of sodium flow on the prototype 21 from different directions, and to determine the influence of sodium input from different directions into the test environment on the flow stability of the prototype 21, so as to obtain more comprehensive test data on the performance of the prototype 21, so as to accurately evaluate its performance.

[0045] In some embodiments, the sample container 20 is provided with a sodium outlet, and the sodium outlet 23 is arranged to be in fluid communication with the sample 21, so that the pressure of the sample 21 can be determined by monitoring the pressure of the sodium outlet 23, thereby facilitating monitoring of the pressure of the sample 21 during the test.

[0046] A support structure is provided inside the prototype container 20 for installing the prototype 21 in the test environment of the prototype container 20 .

[0047] In some embodiments, the test device may further include a vacuum pump 50 and an inert gas supply component 60. The vacuum pump 50 is configured to vacuum the test environment of the sample container 20, and the inert gas supply component 60 is configured to provide inert gas for the test environment. The vacuum pump 50 and the inert gas supply component 60 cooperate to complete the inert gas replacement operation of the test environment, so that the sodium is in the inert gas protection range during the test.

[0048] The following is a specific example to further illustrate the process of testing the performance of the in-pile high-temperature immersion pump prototype in this application.

[0049] The test environment of the prototype is evacuated and replaced with inert gas to test whether the water and oxygen content of the test environment is lower than 50vppm. If it does not meet the standard, the vacuuming and inert gas replacement operations are repeated until the water and oxygen content of the test environment is lower than 50vppm; the test environment is heated to 250°C, and the sodium required for the test is provided to the test environment by pressure difference and power; the test environment is adjusted so that the test environment simulates the sodium flow environment in the stack container; the pressure of the test environment is adjusted to 50kPa, the regulating valve of the test environment is in the fully open state, the prototype is started, and the input voltage of the prototype is set to 60V so that the prototype drives the sodium to circulate; then the pressure of the test environment is increased to 200kPa, and the input voltage of the prototype is increased by 20V until it reaches 200V. After each increase in the input voltage, it is operated at this voltage for 3min to 5min, and the flow change of the current prototype is recorded. According to the flow change, it is judged whether the flow of the prototype at this voltage is stable; under the condition that the pressure of the test environment does not exceed 0.6MPa, the sample is determined The maximum flow and minimum flow of the machine are selected, and multiple flow values ​​between the minimum flow and the maximum flow are selected. By adjusting the opening of the regulating valve of the test environment, the flow of the prototype reaches multiple flow values ​​in order from large to small, and each time the flow value is reached, the input voltage of the prototype is increased by 20V, and it is operated for 3min to 5min at each input voltage, and the performance test data of the prototype such as flow, pressure before pump, pressure after pump, head, three-phase voltage, three-phase current, power factor, three-phase winding temperature, immersion pump groove temperature, etc. are recorded at multiple flow values; then according to the actual temperature and pressure changes in the sodium-cooled fast reactor under different working conditions, the temperature and pressure of the test environment are adjusted accordingly, and the prototype is repeatedly tested to obtain the performance test data of the prototype under different temperature and pressure conditions; the performance test data of the prototype obtained are processed to obtain the relationship curve between flow and head, the relationship curve between flow and power, and the relationship curve between flow and efficiency of the prototype; the performance of the prototype is quantified according to the relationship curve to evaluate whether the prototype meets the technical requirements.

[0050] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0051] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A test method, which is suitable for testing the performance of an in-pile high-temperature immersion pump prototype, characterized in that: It includes the following steps: S00: Processing the test environment of the prototype so that the sodium is in an inert gas protection range during the test; S10: introducing sodium into the test environment; S20: adjusting the test environment so that the test environment simulates the sodium flow environment in the stack container; S30: testing the prototype under different temperatures and pressures in the sodium flow environment to obtain performance characteristics of the prototype; S40: determining a performance characteristic curve of the prototype according to the performance characteristics of the prototype; S50: Determine whether the prototype meets the technical requirements according to the performance characteristic curve of the prototype.

2. The test method according to claim 1, characterized in that In step S00, it also includes: S01: evacuating the test environment and replacing it with inert gas; S02: Testing the water and oxygen content of the test environment, and repeating S01-S02 until the water and oxygen content of the test environment is lower than a predetermined value.

3. The test method according to claim 1, characterized in that: In step S10, it also includes: S11: heating the test environment to a temperature required for sodium entry; S12: Providing a predetermined amount of the sodium to the test environment by using pressure difference and power.

4. The test method according to claim 3, characterized in that After stopping the sodium supply, close the front and rear valves of the prototype, and preheat the prototype and the test environment to a predetermined temperature.

5. The test method according to claim 1, characterized in that: In step S30, the pressure of the test environment is set, and the regulating valve of the test environment is in a fully open state, the prototype is started, and the input voltage of the prototype is set so that the prototype drives the sodium to circulate.

6. The test method according to claim 5, characterized in that In step S30, the input voltage of the prototype is increased in a predetermined increment, and the prototype is operated at each input voltage for a predetermined time.

7. The test method according to claim 1, characterized in that: In step S30, under a predetermined test pressure, the maximum flow rate and the minimum flow rate of the prototype are determined. A plurality of flow values ​​between the minimum flow and the maximum flow are selected, and the performance characteristics of the prototype are determined at the flow rates of the plurality of flow values.

8. A test device, which is suitable for testing the performance of an in-pile high-temperature immersion pump prototype, and provides a test environment for testing the prototype, characterized in that: It includes: A sodium storage member, the sodium storage member being configured to provide metallic sodium to the test environment; A prototype container, the prototype container providing a test environment for testing the prototype, and the prototype is installed in the prototype container; A sodium electromagnetic pump, wherein the sodium electromagnetic pump is configured to drive the metallic sodium in the sodium storage member to enter the test environment; A heating assembly, wherein the heating assembly is configured to heat the part that needs to be heated during the test so that the temperature of the sodium meets the test requirements; A cooling assembly, the cooling assembly being configured to cool a part that needs to be cooled during the test so that the temperature of the sodium meets the test requirements; A monitoring component is configured to monitor performance characteristics of the prototype during testing.

9. The test device according to claim 8, characterized in that The prototype container is provided with a plurality of independent sodium inlets so as to test the effect of sodium flow on the prototype from different directions.

10. The test device according to claim 8, characterized in that The sample container is provided with a sodium outlet, and the sodium outlet is arranged to be in fluid communication with the sample, so that the pressure of the sample is determined by monitoring the pressure of the sodium outlet.

Images