Turbine pump testing device based on virtual-real combination

Abstract

The embodiment of the invention provides a turbine pump testing device based on virtual-real combination. A real steam turbine pump test bench is combined with a pipeline system in a real-time simulation platform, and experimental test data and real-time simulation data are shared, so that the virtuality and reality combined steam turbine pump test device is realized. Based on a virtual simulation pipeline system in a real-time simulation platform, boundary conditions of a steam turbine pump are given when the system runs. On the basis of the boundary conditions calculated by the simulation system, the test bed is controlled to give the same boundary conditions, the steam turbine pump is driven to operate, actual data of an outlet of the steam turbine pump is transmitted back to the simulation system to serve as input for further calculation of the simulation system, and through continuous circulation, characteristic analysis and verification of the steam turbine pump in the virtual system are carried out.

Description

Technical Field

[0001] The present application relates to the field of ship power technology, and in particular to a steam turbine pump testing device based on a combination of virtual and real. Background Art

[0002] Steam turbine pumps are widely used in the water supply system, lubricating oil system, and cooling water system of ship steam power systems, and are mainly used for the transportation of water supply, lubricating oil, cooling water, etc. Since steam turbine pumps use steam as the driving working fluid, the working performance of steam turbine pumps is directly affected by the changes in the working steam parameters. During the operation of the steam turbine pump, the parameter fluctuations of the driving steam will affect the operating characteristics of the steam turbine pump. The characteristic changes of the steam turbine pump directly affect the system in which it is located, such as the water supply system, lubricating oil system, and the system transportation characteristics of cooling water, which in turn affects the operating economy and safety of the ship power system. Therefore, the operating characteristics of the steam turbine pump need to be fully tested during the design process.

[0003] At present, the test of steam turbine pump is an independent test for the operating performance of steam turbine pump. It is difficult to fully measure the actual operating characteristics of steam turbine pump in the pipeline system, especially the actual characteristics of steam turbine pump under variable working conditions, the matching characteristics of steam turbine pump and pipeline, and the operating characteristics of steam turbine pump under system control strategy. It is difficult to measure and verify. To test the actual operating characteristics of steam turbine pump in the pipeline system, it can only be tested through a full-scale test bench, which leads to very high cost of steam turbine pump performance testing and poor versatility of the test bench. In the ship power system, there are many types of steam turbine pumps, and the pipeline system they belong to is complex. Therefore, it is urgent to design a steam turbine pump test device based on the combination of virtual and real. Summary of the invention

[0004] The embodiment of the present invention provides a steam turbine pump test device based on the combination of virtual and real, which realizes the steam turbine pump test device based on the combination of virtual and real by combining the physical steam turbine pump test bench with the piping system in the real-time simulation platform and sharing the test data with the real-time simulation data. The boundary conditions of the steam turbine pump when the system is running are given based on the virtual simulation piping system in the real-time simulation platform. Based on the boundary conditions calculated by the simulation system, the control test bench gives the same boundary conditions to drive the steam turbine pump to run, and the actual data of the steam turbine pump outlet is transmitted back to the simulation system as the input for further calculation of the simulation system. This cycle is repeated continuously to carry out the characteristic analysis and verification of the steam turbine pump in the virtual system.

[0005] The embodiment of the present invention provides a steam turbine pump test device based on virtual-real combination, the test device comprising: a steam turbine pump test bench 5, a data processing unit 21, a real-time simulation platform 22, a regulating device and pipeline accessories;

[0006] The steam turbine pump to be tested is installed on the steam turbine pump test bench 5 and connected to the external steam and circulating water pipelines through pipelines;

[0007] A steam stop valve 1, a steam regulating device 2, a first pressure sensor 3 and a first temperature sensor 4 are arranged on the steam pipeline at the inlet of the steam turbine pump;

[0008] A second pressure sensor 6, a second temperature sensor 7, a first flow meter 8, a steam outlet regulating device 9, a condenser 10 and a condensate tank 11 are arranged on the steam pipeline at the outlet of the turbine pump;

[0009] A fourth pressure sensor 17, a fourth temperature sensor 18, a circulating water regulating device 19 and a stop valve 20 are arranged on the working medium pipeline of the turbine pump inlet;

[0010] A circulating water tank 12, a turbine pump outlet regulating device 13, a second flow meter 14, a third temperature sensor 15 and a third pressure sensor 16 are arranged on the turbine pump outlet working medium pipeline;

[0011] The data processing unit 21 collects the sensor measurement data on the pipeline and transmits it to the real-time simulation platform 22;

[0012] The calculation results of the real-time simulation platform 22 can be transmitted to the steam regulating device (2), the steam outlet regulating device (9), the turbine pump outlet regulating device (13) and the circulating water regulating device (19) through the data processing unit 21.

[0013] In some embodiments, the test device can be used for rated operating performance testing, and the test method includes:

[0014] The data processing unit 21 is used to provide boundary conditions for rated operation of the turbine pump. The steam regulating device 2 and the circulating water regulating device 19 are adjusted according to the rated operation boundary conditions so that the inlet conditions of the turbine pump reach the design operating conditions. The steam outlet regulating device 9 and the turbine pump outlet regulating device 13 are adjusted to simulate the outlet boundary conditions of the turbine pump under rated design operating conditions, and the steady-state operation data of the turbine pump is measured and recorded.

[0015] In some embodiments, the test device can be used for variable operating performance testing of a turbine pump, and the test method includes:

[0016] When conducting a variable operating condition performance test of a steam turbine pump, first calculate the upstream and downstream boundary conditions of the steam turbine pump under a given initial operating condition through the real-time simulation platform 22, adjust the steam regulating device 2, the circulating water regulating device 19, the steam outlet regulating device 9 and the steam turbine pump outlet regulating device 13, so that the steam turbine pump is in the initial operating condition adjustment, and the simulation platform starts variable operating condition operation. The upstream and downstream adjustments of the steam turbine pump calculated by the simulation program under the variable operating condition are controlled and adjusted to control the steam regulating device 2, the circulating water regulating device 19, the steam outlet regulating device 9 and the steam turbine pump outlet regulating device 13, so that the inlet parameters and outlet resistance characteristics of the steam turbine pump are always the same as the simulation calculation, and the steam turbine pump operation characteristic data is recorded.

[0017] In some embodiments, the test device can be used for a turbine pump control strategy verification test, and the test method includes:

[0018] When conducting a steam turbine pump control strategy verification test, the steam turbine pump test bench 5 is connected to the virtual pipeline system in the real-time simulation platform 22 through the data processing unit 21. The real-time simulation platform 22 calculates the steam turbine pump inlet condition under the variable operating condition control strategy, controls and adjusts the steam regulating device 2, the circulating water regulating device 19, the steam outlet regulating device 9 and the steam turbine pump outlet regulating device 13, so that the inlet parameters and outlet resistance characteristics of the steam turbine pump are always the same as the simulation calculation. At the same time, the steam turbine pump control instruction is transmitted to the steam turbine pump test bench 5 through the data processing unit 21. The steam turbine pump operates under variable operating conditions according to the control strategy, and the actual operating data of the steam turbine pump is recorded.

[0019] In some embodiments, the test device can be used for a turbine pump-pipeline matching characteristic test, and the test method includes:

[0020] When conducting a turbine pump-pipeline matching characteristic test, the turbine pump test bench 5 is connected to the virtual pipeline system in the real-time simulation platform 22 through the data processing unit 21. The real-time simulation platform 22 calculates the turbine pump inlet condition under the variable operating condition control strategy, controls and adjusts the steam regulating device 2, the circulating water regulating device 19, the steam outlet regulating device 9 and the turbine pump outlet regulating device 13, so that the inlet parameters and outlet resistance characteristics of the turbine pump are always the same as the simulation calculation. At the same time, the turbine pump control instruction is transmitted to the turbine pump test bench 5 through the data processing unit 21. The operating parameters of the turbine pump are used as the boundary input conditions of the virtual pipeline system in the real-time simulation platform 22, the system operating characteristics are calculated, and the turbine pump operating data are recorded; different pipeline system schemes are modified to test the turbine pump operating characteristics.

[0021] An embodiment of the present invention provides a method for rated operating condition performance test, based on the steam turbine pump test device based on virtual-real combination of the above embodiment, the method comprises:

[0022] The data processing unit 21 is used to provide the boundary conditions for the rated operation of the turbine pump. The steam regulating device 2 and the circulating water regulating device 19 are adjusted according to the rated operation boundary conditions to make the turbine pump inlet conditions reach the design operating conditions. The steam outlet regulating device 9 and the turbine pump outlet regulating device 13 are adjusted to simulate the rated design operating condition outlet boundary conditions of the turbine pump, and the steady-state operation data of the turbine pump is measured and recorded.

[0023] An embodiment of the present invention provides a method for testing the performance of a turbine pump under variable operating conditions. Based on the turbine pump testing device based on virtual-real combination of the above embodiment, the method includes:

[0024] When conducting a variable operating condition performance test of a steam turbine pump, first calculate the upstream and downstream boundary conditions of the steam turbine pump under a given initial operating condition through the real-time simulation platform 22, adjust the steam regulating device 2, the circulating water regulating device 19, the regulating steam outlet regulating device 9 and the steam turbine pump outlet regulating device 13, so that the steam turbine pump is in the initial operating condition adjustment, and the simulation platform starts variable operating condition operation. The upstream and downstream adjustments of the steam turbine pump calculated by the simulation program under the variable operating condition are controlled to adjust the steam regulating device 2, the circulating water regulating device 19, the regulating steam outlet regulating device 9 and the steam turbine pump outlet regulating device 13, so that the inlet parameters and outlet resistance characteristics of the steam turbine pump are always the same as the simulation calculation, and the steam turbine pump operation characteristic data is recorded.

[0025] An embodiment of the present invention provides a method for verifying a turbine pump control strategy test, based on the turbine pump test device based on virtual-real combination of the above embodiment, the method comprises:

[0026] When conducting a steam turbine pump control strategy verification test, the steam turbine pump test bench 5 is connected to the virtual pipeline system in the real-time simulation platform 22 through the data processing unit 21. The real-time simulation platform 22 calculates the steam turbine pump inlet conditions under the variable operating condition control strategy, controls the regulating steam regulating device 2, the circulating water regulating device 19, the regulating steam outlet regulating device 9 and the steam turbine pump outlet regulating device 13, so that the inlet parameters and outlet resistance characteristics of the steam turbine pump are always the same as the simulation calculation. At the same time, the steam turbine pump control instructions are transmitted to the steam turbine pump test bench 5 through the data processing unit 21. The steam turbine pump operates under variable operating conditions according to the control strategy, and records the actual operating data of the steam turbine pump.

[0027] An embodiment of the present invention provides a method for testing the matching characteristics of a turbine pump and a pipeline. Based on the turbine pump testing device based on virtual-real combination of the above embodiment, the method includes:

[0028] When conducting the turbine pump-pipeline matching characteristic test, the turbine pump test bench 5 is connected to the virtual pipeline system in the real-time simulation platform 22 through the data processing unit 21. The real-time simulation platform 22 calculates the turbine pump inlet conditions under the variable operating condition control strategy, controls the steam regulating device 2, the circulating water regulating device 19, the regulating steam outlet regulating device 9 and the turbine pump outlet regulating device 13, so that the inlet parameters and outlet resistance characteristics of the turbine pump are always the same as the simulation calculation. At the same time, the turbine pump control instruction is transmitted to the turbine pump test bench 5 through the data processing unit 21. The operating parameters of the turbine pump are used as the boundary input conditions of the virtual pipeline system in the real-time simulation platform 22, the system operating characteristics are calculated, and the turbine pump operating data are recorded; different pipeline system schemes are modified to test the turbine pump operating characteristics.

[0029] The beneficial effects of the above embodiments of the present invention include:

[0030] 1) It is not necessary to build a complex piping system that matches the turbine pump, which reduces the testing cost of the turbine pump;

[0031] 2) The test bench is universal and can test steam turbine pumps of different types and sizes;

[0032] 3) Ability to test and verify the actual operating performance of the turbo pump under different operating conditions of the actual piping system;

[0033] 4) By calling different virtual piping systems, the matching characteristics of the turbine pump-piping system can be verified, and the auxiliary piping system optimization design can be carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings illustrate generally, by way of example and not limitation, various embodiments discussed herein.

[0035] Figure 1 It is a structural schematic diagram of a steam turbine pump testing device based on the combination of virtual and real in an embodiment of the present invention.

[0036] Explanation of symbols:

[0037] 1. Steam stop valve; 2. Steam regulating device; 3. First pressure sensor; 4. First temperature sensor; 5. Steam turbine pump test bench; 6. Second pressure sensor; 7. Second temperature sensor; 8. First flow meter; 9. Steam outlet regulating device; 10. Condenser; 11. Condensate tank; 12. Circulating water tank; 13. Steam turbine pump outlet regulating device; 14. Second flow meter; 15. Third temperature sensor; 16. Third pressure sensor; 17. Fourth pressure sensor; 18. Fourth temperature sensor; 19. Circulating water regulating device; 20. Stop valve; 21. Data processing unit; 22. Real-time simulation platform. DETAILED DESCRIPTION

[0038] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

[0039] In the embodiments of the present application, it should be noted that, unless otherwise specified and limited, the term "connection" should be understood in a broad sense. For example, it can be an electrical connection or a connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0040] It should be noted that the terms "first\second\third" involved in the embodiments of the present application are only used to distinguish similar objects, and do not represent a specific order for the objects. It is understandable that the "first\second\third" can be interchanged with a specific order or sequence where permitted. It should be understood that the objects distinguished by "first\second\third" can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0041] The invention relates to a steam turbine pump testing device based on virtual-real combination, which is suitable for testing steam turbine pumps of a water supply system, a circulating water system and a lubricating oil system of a steam power system.

[0042] The embodiment of the present invention provides a steam turbine pump test device based on the combination of virtual and real, which realizes the steam turbine pump test device based on the combination of virtual and real by combining the physical steam turbine pump test bench with the piping system in the real-time simulation platform and sharing the test data with the real-time simulation data. The boundary conditions of the steam turbine pump when the system is running are given based on the virtual simulation piping system in the real-time simulation platform. Based on the boundary conditions calculated by the simulation system, the control test bench gives the same boundary conditions to drive the steam turbine pump to run, and the actual data of the steam turbine pump outlet is transmitted back to the simulation system as the input for further calculation of the simulation system. This cycle is repeated continuously to carry out the characteristic analysis and verification of the steam turbine pump in the virtual system.

[0043] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. Figure 1 It is a structural schematic diagram of a steam turbine pump testing device based on the combination of virtual and real in an embodiment of the present invention.

[0044] like Figure 1As shown, a steam turbine pump test device based on virtual-real combination provided by the present invention is composed of a steam turbine pump test bench 5, a data processing unit 21, a real-time simulation platform 22, a regulating device and pipeline accessories. Here, the regulating device includes a steam regulating device 2, a steam outlet regulating device 9, a steam turbine pump outlet regulating device 13 and a circulating water regulating device 19. The regulating device can adopt a regulating valve in a specific implementation. The steam turbine pump to be tested is installed on the steam turbine pump test bench 5 and connected to the external steam and circulating water pipelines through pipelines. A steam stop valve 1, a steam regulating device 2, a first pressure sensor 3 and a first temperature sensor 4 are arranged on the steam turbine pump inlet steam pipeline; a second pressure sensor 6, a second temperature sensor 7, a first flowmeter 8, a steam outlet regulating device 9, a condenser 10, and a condensate tank 11 are arranged on the steam turbine pump outlet steam pipeline. A stop valve 20, a circulating water regulating device 19, a fourth temperature sensor 18 and a fourth pressure sensor 17 are arranged on the working medium pipeline of the turbine pump inlet; a third pressure sensor 16, a third temperature sensor 15, a second flow meter 14, a turbine pump outlet regulating device 13 and a circulating water tank 12 are arranged on the working medium pipeline of the turbine pump outlet. The data processing unit 21 collects the sensor measurement data on the pipeline and transmits it to the real-time simulation platform 22. The calculation results of the real-time simulation platform operation can be transmitted to the steam regulating device 2, the steam outlet regulating device 9, the turbine pump outlet regulating device 13 and the circulating water regulating device 19 through the data processing unit 21.

[0045] Case 1 Rated operating performance test

[0046] The data processing unit 21 is used to provide the boundary conditions for the rated operation of the turbine pump. The steam regulating device 2 and the circulating water regulating device 19 are adjusted according to the rated operation boundary conditions to make the turbine pump inlet conditions reach the design operating conditions. The steam outlet regulating device 9 and the turbine pump outlet regulating device 13 are adjusted to simulate the rated design operating condition outlet boundary conditions of the turbine pump, and the steady-state operation data of the turbine pump is measured and recorded.

[0047] Example 2: Turbine pump variable operating performance test

[0048] When conducting a variable operating condition performance test on a steam turbine pump, first calculate the upstream and downstream boundary conditions of the steam turbine pump under a given initial operating condition through a real-time simulation platform, adjust the steam regulating device 2, the circulating water regulating device 19, the regulating steam outlet regulating device 9 and the steam turbine pump outlet regulating device 13, so that the steam turbine pump is in the initial operating condition adjustment, and the simulation platform starts variable operating condition operation. Under variable operating conditions, the upstream and downstream adjustments of the steam turbine pump calculated by the simulation program are controlled to adjust the steam regulating device 2, the circulating water regulating device 19, the regulating steam outlet regulating device 9 and the steam turbine pump outlet regulating device 13, so that the inlet parameters and outlet resistance characteristics of the steam turbine pump are always the same as those calculated in the simulation, and the operating characteristic data of the steam turbine pump are recorded.

[0049] Case 3 Turbine Pump Control Strategy Verification Test

[0050] When conducting a steam turbine pump control strategy verification test, the steam turbine pump test bench 5 is connected to the virtual pipeline system in the real-time simulation platform 22 through the data processing unit 21. The real-time simulation platform 22 calculates the steam turbine pump inlet conditions under the variable operating condition control strategy, controls the regulating steam regulating device 2, the circulating water regulating device 19, the regulating steam outlet regulating device 9 and the steam turbine pump outlet regulating device 13, so that the inlet parameters and outlet resistance characteristics of the steam turbine pump are always the same as the simulation calculation. At the same time, the steam turbine pump control instructions are transmitted to the steam turbine pump test bench 5 through the data processing unit 21. The steam turbine pump operates under variable operating conditions according to the control strategy, and records the actual operating data of the steam turbine pump.

[0051] Example 4 Turbine Pump-Pipeline Matching Characteristics Test

[0052] When conducting the turbine pump-pipeline matching characteristic test, the turbine pump test bench 5 is connected to the virtual pipeline system in the real-time simulation platform 22 through the data processing unit 21. The real-time simulation platform 22 calculates the turbine pump inlet conditions under the variable operating condition control strategy, controls the steam regulating device 2, the circulating water regulating device 19, the regulating steam outlet regulating device 9 and the turbine pump outlet regulating device 13, so that the inlet parameters and outlet resistance characteristics of the turbine pump are always the same as the simulation calculation. At the same time, the turbine pump control instruction is transmitted to the turbine pump test bench 5 through the data processing unit 21. The operating parameters of the turbine pump are used as the boundary input conditions of the virtual pipeline system in the real-time simulation platform 22, the system operating characteristics are calculated, and the turbine pump operating data are recorded; different pipeline system schemes are modified to test the turbine pump operating characteristics.

[0053] The embodiment of the present invention provides a steam turbine pump testing device based on the combination of virtual and real.

[0054] The test device of the embodiment of the present invention is composed of a steam turbine pump test device, a data processing unit, a real-time simulation system, and corresponding pipelines and valves. The test data of the steam turbine pump test device is collected by the real-time data processing unit and uploaded to the real-time simulation system as a boundary condition.

[0055] The real-time simulation system is connected to the regulating valve of the test device through the data processing unit. The real-time simulation system obtains the operating boundary conditions of the steam turbine pump through simulation calculation, and adjusts the steam turbine pump inlet and outlet regulating devices through the control program to reach the operating boundary.

[0056] The outlet data of the turbine pump operation is returned to the simulation system through the data processing unit, driving the simulation system to perform real-time calculations.

[0057] The virtual piping system in the real-time simulation platform in the test device of the embodiment of the present invention can be modified and rebuilt, supports different virtual piping system solutions, and verifies the matching characteristics of the steam turbine pump-piping system.

[0058] The turbine pump test bench in the test device of the embodiment of the present invention can be equipped with turbine pumps of different types and sizes, and is connected to the test device through the inlet and outlet interfaces.

[0059] The technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0060] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A steam turbine pump testing device based on virtual and real combination, characterized in that: The testing device comprises: a turbine pump testing bench (5), a data processing unit (21), a real-time simulation platform (22), a regulating device and pipeline accessories; The steam turbine pump to be tested is installed on the steam turbine pump test bench (5) and connected to external steam and circulating water pipelines through pipelines; A steam stop valve (1), a steam regulating device (2), a first pressure sensor (3) and a first temperature sensor (4) are arranged on the steam pipeline at the inlet of the steam turbine pump; A second pressure sensor (6), a second temperature sensor (7), a first flow meter (8), a steam outlet regulating device (9), a condenser (10) and a condensate tank (11) are arranged on the steam pipeline at the outlet of the turbine pump; A fourth pressure sensor (17), a fourth temperature sensor (18), a circulating water regulating device (19) and a stop valve (20) are arranged on the working medium pipeline at the inlet of the turbine pump; A circulating water tank (12), a turbine pump outlet regulating device (13), a second flow meter (14), a third temperature sensor (15) and a third pressure sensor (16) are arranged on the turbine pump outlet working medium pipeline; The data processing unit (21) collects sensor measurement data on the pipeline and transmits the data to the real-time simulation platform (22); The calculation results of the real-time simulation platform (22) can be transmitted to the steam regulating device (2), the steam outlet regulating device (9), the turbine pump outlet regulating device (13) and the circulating water regulating device (19) through the data processing unit (21).

2. The steam turbine pump testing device based on virtual-real combination according to claim 1 is characterized in that: The test device can be used for rated working condition performance test, and the test method includes: The data processing unit (21) provides the boundary conditions for the rated operation of the turbine pump, and the steam regulating device (2) and the circulating water regulating device (19) are adjusted according to the rated operation boundary conditions so that the inlet conditions of the turbine pump reach the design operating conditions. The steam outlet regulating device (9) and the turbine pump outlet regulating device (13) are adjusted to simulate the outlet boundary conditions of the rated design operating conditions of the turbine pump, and the steady-state operation data of the turbine pump are measured and recorded.

3. The steam turbine pump testing device based on virtual-real combination according to claim 1 is characterized in that: The test device can be used for variable operating performance test of a steam turbine pump, and the test method includes: When performing a variable operating condition performance test on a steam turbine pump, the upstream and downstream boundary conditions of the steam turbine pump under a given initial operating condition are first calculated through the real-time simulation platform (22), and the steam regulating device (2), the circulating water regulating device (19), the steam outlet regulating device (9) and the steam turbine pump outlet regulating device (13) are adjusted to put the steam turbine pump in the initial operating condition adjustment. The simulation platform starts variable operating condition operation, and the upstream and downstream adjustments of the steam turbine pump calculated by the simulation program under the variable operating condition are controlled and adjusted to control the steam regulating device (2), the circulating water regulating device (19), the steam outlet regulating device (9) and the steam turbine pump outlet regulating device (13) so that the inlet parameters and outlet resistance characteristics of the steam turbine pump are always the same as those calculated by simulation, and the operating characteristic data of the steam turbine pump are recorded.

4. The steam turbine pump testing device based on virtual-real combination according to claim 1 is characterized in that: The test device can be used for the steam turbine pump control strategy verification test, and the test method includes: When conducting a steam turbine pump control strategy verification test, the steam turbine pump test bench (5) is connected to the virtual pipeline system in the real-time simulation platform (22) through the data processing unit (21). The real-time simulation platform (22) calculates the steam turbine pump inlet condition under the variable operating condition control strategy, controls and adjusts the steam regulating device (2), the circulating water regulating device (19), the steam outlet regulating device (9) and the steam turbine pump outlet regulating device (13), so that the inlet parameters and outlet resistance characteristics of the steam turbine pump are always the same as those calculated by simulation. At the same time, the steam turbine pump control instruction is transmitted to the steam turbine pump test bench (5) through the data processing unit (21). The steam turbine pump performs variable operating condition operation according to the control strategy, and the actual operating data of the steam turbine pump is recorded.

5. The steam turbine pump testing device based on virtual-real combination according to claim 1 is characterized in that: The test device can be used for a turbine pump-pipeline matching characteristic test, and the test method includes: When performing a turbine pump-pipeline matching characteristic test, the turbine pump test bench (5) is connected to the virtual pipeline system in the real-time simulation platform (22) through the data processing unit (21); the real-time simulation platform (22) calculates the turbine pump inlet condition under the variable operating condition control strategy, controls and adjusts the steam regulating device (2), the circulating water regulating device (19), the steam outlet regulating device (9) and the turbine pump outlet regulating device (13), so that the turbine pump inlet parameters and outlet resistance characteristics are always the same as those calculated by simulation; at the same time, the turbine pump control instruction is transmitted to the turbine pump test bench (5) through the data processing unit (21); the turbine pump operating parameters are used as the boundary input conditions of the virtual pipeline system in the real-time simulation platform (22); the system operating characteristics are calculated; and the turbine pump operating data is recorded; different pipeline system schemes are modified to test the turbine pump operating characteristics.

6. A method for rated operating performance testing, characterized in that: Based on the steam turbine pump testing device based on virtual-real combination according to claim 1, the method comprises: The data processing unit (21) provides the boundary conditions of the rated operation of the turbine pump, and the steam regulating device (2) and the circulating water regulating device (19) are adjusted according to the rated operation boundary conditions so that the inlet conditions of the turbine pump reach the design operating conditions. The steam outlet regulating device (9) and the turbine pump outlet regulating device (13) are adjusted to simulate the outlet boundary conditions of the rated design operating conditions of the turbine pump, and the steady-state operation data of the turbine pump are measured and recorded.

7. A method for testing the performance of a steam turbine pump under variable operating conditions, characterized in that: Based on the steam turbine pump testing device based on virtual-real combination according to claim 1, the method comprises: When performing a variable operating condition performance test on a steam turbine pump, the upstream and downstream boundary conditions of the steam turbine pump under a given initial operating condition are first calculated through a real-time simulation platform (22), and the steam regulating device (2), the circulating water regulating device (19), the regulating steam outlet regulating device (9) and the steam turbine pump outlet regulating device (13) are adjusted to put the steam turbine pump in the initial operating condition adjustment. The simulation platform starts variable operating condition operation, and the upstream and downstream adjustments of the steam turbine pump calculated by the simulation program under the variable operating condition are controlled to adjust the steam regulating device (2), the circulating water regulating device (19), the regulating steam outlet regulating device (9) and the steam turbine pump outlet regulating device (13) so that the inlet parameters and outlet resistance characteristics of the steam turbine pump are always the same as those calculated by simulation, and the operating characteristic data of the steam turbine pump are recorded.

8. A method for verifying a turbine pump control strategy, characterized in that: Based on the steam turbine pump testing device based on virtual-real combination according to claim 1, the method comprises: When conducting a steam turbine pump control strategy verification test, the steam turbine pump test bench (5) is connected to the virtual pipeline system in the real-time simulation platform (22) through the data processing unit (21). The real-time simulation platform (22) calculates the steam turbine pump inlet conditions under the variable operating condition control strategy, controls and adjusts the steam regulating device (2), the circulating water regulating device (19), the regulating steam outlet regulating device (9) and the steam turbine pump outlet regulating device (13), so that the inlet parameters and outlet resistance characteristics of the steam turbine pump are always the same as those calculated in the simulation. At the same time, the steam turbine pump control instructions are transmitted to the steam turbine pump test bench (5) through the data processing unit (21). The steam turbine pump operates under variable operating conditions according to the control strategy, and the actual operating data of the steam turbine pump is recorded.

9. A method for testing the matching characteristics of a steam turbine pump and a pipeline, characterized in that: Based on the steam turbine pump testing device based on virtual-real combination according to claim 1, the method comprises: When conducting a turbine pump-pipeline matching characteristic test, the turbine pump test bench (5) is connected to the virtual pipeline system in the real-time simulation platform (22) through the data processing unit (21). The real-time simulation platform (22) calculates the turbine pump inlet conditions under the variable operating condition control strategy, controls and adjusts the steam regulating device (2), the circulating water regulating device (19), the regulating steam outlet regulating device (9) and the turbine pump outlet regulating device (13), so that the turbine pump inlet parameters and outlet resistance characteristics are always the same as the simulation calculation. At the same time, the turbine pump control instruction is transmitted to the turbine pump test bench (5) through the data processing unit (21). The turbine pump operating parameters are used as the boundary input conditions of the virtual pipeline system in the real-time simulation platform (22), the system operating characteristics are calculated, and the turbine pump operating data are recorded; different pipeline system schemes are modified to test the turbine pump operating characteristics.

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