A comprehensive performance test system for high-temperature gas-cooled reactors

Abstract

The present invention discloses a comprehensive performance test system for a high-temperature gas-cooled reactor, which relates to the technical field of performance testing of nuclear power high-temperature gas-cooled reactors. It solves the problem in the prior art that the system can only be subsequently adjusted according to a loop flow rate and a set pressure set value, cannot simulate a real test environment, and cannot achieve performance matching testing between components. The specific scheme is as follows: A comprehensive performance test system for a high-temperature gas-cooled reactor comprises a compressor, a regenerator, an electric heater, a test piece, and a helium turbine connected in sequence, wherein the outlet section of the helium turbine is connected to the regenerator, and the outlet of the regenerator is also connected to the compressor; a pre-regulation branch is provided between the electric heater and the helium turbine, the pre-regulation branch is provided with a first switch valve and a first regulating valve, and a second switch valve and a second regulating valve are provided at the outlet of the test piece; a bypass branch is also provided at the outlet of the compressor to adjust the main helium parameters, the bypass road is connected to the outlet of the regenerator, and is connected to the compressor through a cooler.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power high temperature gas-cooled reactor performance testing, in particular to a high temperature gas-cooled reactor comprehensive performance testing system. Background Art

[0002] High-Temperature Gas-Cooled Reactors (HTGRs) are fourth-generation nuclear power technology that utilize helium as the core coolant. After passing through the core, the helium can directly drive a helium turbine to generate power, outputting electricity through a generator. Alternatively, the helium can heat high-pressure water in the secondary circuit of a steam generator to generate steam, which in turn drives a steam turbine. Due to the unique characteristics of nuclear reactors, extensive performance testing is required before the core is finalized to support engineering design.

[0003] The inventors discovered that the existing comprehensive performance test of high-temperature gas-cooled reactors can only meet the test of some components, but cannot achieve comprehensive performance testing of key components such as the core, helium compressor, and helium turbine. A separate component test device cannot perform performance matching tests between components, thereby affecting the performance evaluation of high-temperature gas-cooled reactors before the construction of a demonstration power station. Application No. CN113851235 discloses a prismatic gas-cooled reactor thermal-hydraulic comprehensive experimental loop system, which realizes full-height, full-pressure, and full-temperature simulation of thermal-hydraulic phenomena of core fuel assemblies, control rod assemblies, and structural component pipes by controlling the loop temperature, flow, and pressure. However, it cannot achieve pre-regulation of the test section flow, and can only be subsequently adjusted according to the loop flow and set pressure setting value. It cannot simulate the real test environment, and it cannot achieve performance matching tests between components. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a high-temperature gas-cooled reactor comprehensive performance test system to solve the technical problems in the existing technology that the test section flow cannot be pre-adjusted and can only be subsequently adjusted according to the loop flow and the set pressure setting value, and the real test environment cannot be simulated. At the same time, it cannot achieve performance matching tests between components.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A high-temperature gas-cooled reactor comprehensive performance test system includes a compressor, a regenerator, an electric heater, a test piece, and a helium turbine connected in sequence. The outlet section of the helium turbine is connected to the regenerator, and the outlet of the regenerator is also connected to the compressor. A pre-regulation branch for adjusting the helium parameters at the test piece inlet is provided between the electric heater and the helium turbine. The pre-regulation branch is provided with a first switch valve and a first regulating valve. A second switch valve and a second regulating valve are provided at the test piece outlet.

[0007] A bypass branch is also set at the compressor outlet to adjust the main helium parameters. The bypass branch is connected to the regenerator outlet and connected to the compressor through a cooler.

[0008] As a further implementation, a third regulating valve is provided on the bypass path.

[0009] As a further implementation, a fourth regulating valve is provided at the inlet of the cooler.

[0010] As a further implementation method, a flow meter and a fifth regulating valve are provided on the main road between the inlet of the bypass road and the regenerator.

[0011] As a further implementation, a helium injection device is connected to the compressor outlet.

[0012] As a further implementation, pressure sensors are respectively provided at the inlet and outlet of the test piece.

[0013] As a further implementation, temperature sensors are respectively provided at the inlet and outlet of the test piece.

[0014] As a further implementation, the helium turbine is connected to a generator set.

[0015] As a further implementation, the cooler is connected to a cooling water circulation loop.

[0016] As a further implementation, a third switch valve is provided between the helium injection device and the compressor outlet.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. By providing a pre-regulation branch, the present invention ensures that the system loop simulates a realistic test environment, ensuring that the core simulation test piece immediately enters the test process. By providing a bypass branch, the flow rate through the core simulation test piece in the circulation loop can be adjusted.

[0019] 2. The regenerator utilizes waste heat from the helium turbine's exhaust, raising the helium temperature before the electric heater and saving system energy. After passing through the regenerator, the exhaust from the helium turbine merges with the helium at the bypass outlet. Cooling water in the cooler absorbs excess heat from the system, achieving thermal balance for the entire test system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] Figure 1 It is a schematic diagram of the overall structure of a high-temperature gas-cooled reactor comprehensive performance test system of the present invention.

[0022] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0023] Among them: 1. Compressor; 2. Third switch valve; 3. Fifth regulating valve; 4. Flow meter; 5. Regenerator; 6. Electric heater; 7. Inlet pressure sensor; 8. Inlet temperature sensor; 9. Core simulation test piece; 10. Outlet pressure sensor; 11. Outlet temperature sensor; 12. Second regulating valve; 13. Second switch valve; 14. Third regulating valve; 15. First regulating valve; 16. First switch valve; 17. Fourth regulating valve; 18. Helium injection device; 19. Generator set; 20. Helium turbine; 21. Cooler. DETAILED DESCRIPTION

[0024] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0025] As introduced in the background technology, the existing technology cannot realize pre-regulation of the flow of the test section, and can only make subsequent adjustments based on the loop flow and the set pressure setting value. It cannot simulate the real test environment, and it cannot realize the problem of performance matching test between components. In order to solve the above technical problems, the present invention proposes a high-temperature gas-cooled reactor comprehensive performance test system.

[0026] Example 1

[0027] In a typical embodiment of the present invention, referring to Figure 1 As shown, a high-temperature gas-cooled reactor comprehensive performance test system includes a compressor 1, a regenerator 5, an electric heater 6, a core simulation test piece 9, and a helium turbine 20 connected in sequence. The outlet section of the helium turbine 20 is connected to the regenerator 5, and the helium turbine 20 is connected to the generator set 19 to drive the generator set 19 to perform work. The outlet of the regenerator 5 is also connected to the inlet section of the compressor 1 to form a circulation loop, and the core simulation test piece 9 is tested through the circulation loop.

[0028] By using the helium turbine 20 to drive the engine group to produce power, the electricity required during part of the test process can be supplemented, thereby achieving the purpose of saving energy and reducing the energy consumption of the test system.

[0029] A pre-regulation branch for adjusting the helium parameters at the test piece inlet is also provided between the electric heater 6 and the helium turbine 20. A first switch valve 16 and a first regulating valve 15 are provided on the pre-regulation branch. A second switch valve 13 and a second regulating valve 12 are provided at the outlet of the core simulation test piece 9.

[0030] In this embodiment, a first on-off valve 16 and a first regulating valve 15 are provided on the pre-regulation branch, and a second on-off valve 13 and a second regulating valve 12 are provided at the outlet of the core simulation test piece 9. When testing the core simulation test piece 9, the second on-off valve 13 is closed in advance, and the first on-off valve 16 and the first regulating valve 15 are opened. By controlling the opening of the first regulating valve 15, when the helium parameters in the circuit meet the target requirements, the first on-off valve 16 is closed and the second on-off valve 13 is opened, allowing the pre-regulated helium to flow into the core simulation test piece 9.

[0031] During the test, when the helium parameters need to be changed, the second regulating valve 12 can be adjusted. By setting the pre-regulation branch, the system loop can be guaranteed to simulate the real test environment, ensuring that the core simulation test piece 9 enters the test process immediately.

[0032] An inlet pressure sensor 7 and an inlet temperature sensor 8 are installed at the inlet of the core simulation test piece 9, and an outlet pressure sensor 10 and an outlet temperature sensor 11 are installed at the outlet. The pressure and temperature sensors are used to detect the helium temperature and pressure at the inlet and outlet of the core simulation test piece 9.

[0033] A bypass branch is also provided at the outlet of compressor 1 to regulate the parameters of the main helium gas. This bypass branch communicates with the outlet of regenerator 5 and is connected to the compressor via cooler 21, which is then connected to the cooling water circulation loop. A third regulating valve 14 is installed on the bypass branch, and a fourth regulating valve 17 is installed at the inlet of cooler 21. A flow meter 4 and a fifth regulating valve 3 are installed on the main line between the bypass branch inlet and the regenerator.

[0034] Specifically, the bypass branch consists of a third regulating valve 14 and piping. By adjusting the opening ratio of the third regulating valve 14, the fifth regulating valve 3, and the second regulating valve, the flow rate through the core simulation test article 9 in the circulation loop can be adjusted. A flow meter serves as the basis for flow regulation.

[0035] The compressor outlet is connected to a helium injection device 18. A third switch valve 2 is provided between the helium injection device 18 and the compressor outlet. After opening the third switch valve 2, the helium injection device 18 injects helium into the system's circulation loop. The helium injection device 18 uses a gas storage tank.

[0036] The regenerator is connected to the outlet of the helium turbine and also to the outlet of the compressor. This regenerator utilizes the waste heat from the helium turbine's exhaust, raising the helium temperature before the electric heater 6 and saving system energy. After passing through the regenerator, the exhaust from the helium turbine merges with the helium from the outlet of the bypass. Cooling water in the cooler absorbs excess heat from the system, achieving thermal equilibrium for the entire test system.

[0037] The fourth regulating valve 17 is provided to control the flow rate of helium gas at the outlet of the regenerator 5 and the outlet of the bypass.

[0038] This embodiment, by replacing the core simulation test piece 9, can be used for component performance testing and mechanism testing in a helium environment. By replacing different helium compressors 1, core simulation test pieces 9, and helium turbines 20, performance testing of different components of a high-temperature gas-cooled reactor and performance matching testing between components can be achieved.

[0039] The foregoing 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 various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A comprehensive performance test method for a high-temperature gas-cooled reactor, characterized in that: The system comprises a compressor, a regenerator, an electric heater, a test piece, and a helium turbine connected in sequence. The outlet section of the helium turbine is connected to the regenerator, and the outlet of the regenerator is also connected to the compressor. A pre-regulation branch for adjusting the helium parameters at the inlet of the test piece is also provided between the electric heater and the helium turbine. The pre-regulation branch is provided with a first switch valve and a first regulating valve. A second switch valve and a second regulating valve are provided at the outlet of the test piece. The helium turbine is connected to a generator set; When testing the core simulation test piece, the second on-off valve is closed in advance, and the first on-off valve and the first regulating valve are opened. The device is pre-regulated by controlling the opening of the first regulating valve. When the helium parameters in the loop meet the target requirements, the first on-off valve is closed and the second on-off valve is opened. At this time, the pre-regulated helium is introduced into the core simulation test piece. A bypass branch is also set at the compressor outlet to adjust the main helium parameters. The bypass branch is connected to the regenerator outlet and connected to the compressor through the cooler. By replacing different helium compressors, core simulation test pieces, and helium turbines, performance tests of different components of the high-temperature gas-cooled reactor and performance matching tests between components can be achieved.

2. A high temperature gas-cooled reactor comprehensive performance test method according to claim 1, characterized in that: A third regulating valve is provided on the bypass branch.

3. A high temperature gas-cooled reactor comprehensive performance test method according to claim 2, characterized in that: A fourth regulating valve is provided at the inlet of the cooler.

4. A high temperature gas-cooled reactor comprehensive performance test method according to claim 3, characterized in that: A flow meter and a fifth regulating valve are provided on the main road between the bypass branch inlet and the heater.

5. A high temperature gas-cooled reactor comprehensive performance test method according to claim 4, characterized in that: The compressor outlet is connected to a helium injection device.

6. A high temperature gas-cooled reactor comprehensive performance test method according to claim 1, characterized in that: Pressure sensors are respectively provided at the inlet and outlet of the test piece.

7. A high temperature gas-cooled reactor comprehensive performance test method according to claim 6, characterized in that: Temperature sensors are respectively provided at the inlet and outlet of the test piece.

8. The method for comprehensive performance testing of a high-temperature gas-cooled reactor according to claim 1, characterized in that: The cooler is connected to a cooling water circulation loop.

9. A high temperature gas-cooled reactor comprehensive performance test method according to claim 5, characterized in that: A third switch valve is provided between the helium injection device and the compressor outlet.

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