Hydrogen engine turbine blade cooling effect test equipment and method

Abstract

The present invention relates to a hydrogen engine turbine blade cooling effect test device and method. The hydrogen engine turbine blade cooling effect test device includes an air supply device, a combustion chamber, a turbine, a steam turbine, and a temperature measuring device. The turbine includes a turbine body, stationary blades, and moving blades. The stationary blades and moving blades are disposed within the turbine body. The air supply device is connected to the combustion chamber for supplying hydrogen and oxygen into the combustion chamber. The combustion chamber is connected to the turbine body. The steam turbine is connected to the combustion chamber and the turbine body. Part of the steam extraction from the steam turbine enters the combustion chamber, and another part of the steam extraction from the steam turbine enters the turbine body. The temperature measuring device is connected to the turbine for measuring the temperature of at least one of the stationary blades, the moving blades, and the turbine interstage. The hydrogen engine turbine blade cooling effect test device of the present invention can perform cooling effect tests on hydrogen engine turbine blades, analyze the influence of steam on the cooling effect of hydrogen engine turbine blades, provide support for hydrogen engine design, and has good practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of gas turbines, and in particular to a device and method for testing the cooling effect of a hydrogen combustion engine turbine blade. Background Art

[0002] As carbon emission requirements become increasingly stringent both domestically and internationally, traditional gas turbines fueled by natural gas are facing increasing pressure to emit carbon emissions. A hydrogen-fired gas turbine uses hydrogen as a fuel instead of natural gas. Because its primary emissions are water vapor, it offers the advantage of completely zero carbon emissions. Hydrogen-fired gas turbines can also be combined with renewable energy to address the challenges of large-scale, long-term storage and flexible grid connection of renewable energy, making them popular with mainstream gas turbine manufacturers both domestically and internationally. The initial temperature of a hydrogen-fired gas turbine is much higher, far exceeding the high-temperature resistance limit of the turbine blade material. To ensure normal operation of the turbine blades at high temperatures, advanced cooling technology is required to reduce the blade surface temperature.

[0003] In addition, compared to traditional natural gas gas turbines, hydrogen engines have different working media. The exhaust of natural gas gas turbines is mainly composed of carbon dioxide and nitrogen oxides, while the exhaust of hydrogen engines is mainly composed of water vapor. The difference in heat flow composition increases the convective heat transfer coefficient of the blade surface, which has a more adverse impact on the cooling circuit. Therefore, it is necessary to conduct research specifically on the cooling of hydrogen engine turbine blades. At the same time, the design of hydrogen engine cooling schemes is not yet mature. In order to consider the matching of cooling medium and exhaust medium, unlike traditional natural gas gas turbines that use air to cool the turbine blades, moving blades and rotors, hydrogen engines can be designed to use steam cooling. The difference in cooling schemes does not need to be verified.

[0004] However, in the relevant technology, there is no test bench for testing and evaluating the static cooling effect of turbine vanes or moving blades of hydrogen combustion engines, nor is there a test plan for using water vapor as the working fluid for static cooling of turbine vanes or moving blades. Therefore, correctly evaluating the static cooling effect of steam extraction on the turbine vanes or moving blades of hydrogen combustion engines is of great significance to hydrogen combustion engine design. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, an embodiment of the present invention proposes a hydrogen engine turbine blade cooling effect test device, which can perform cooling effect tests on hydrogen engine turbine blades, analyze the impact of steam on the cooling effect of hydrogen engine turbine blades, provide support for the design of hydrogen engines, and has good practicality.

[0007] An embodiment of the present invention also provides a method for testing the cooling effect of hydrogen combustion engine turbine blades.

[0008] According to an embodiment of the present invention, a hydrogen combustion engine turbine blade cooling effect test device includes: an air supply device, a combustion chamber, a turbine, a steam turbine and a temperature measuring device, the turbine includes a turbine body, stationary blades and moving blades, the stationary blades and moving blades are arranged in the turbine body, the air supply device is connected to the combustion chamber for supplying hydrogen and oxygen into the combustion chamber, the combustion chamber is connected to the turbine body, the steam turbine is connected to the combustion chamber and the turbine body, part of the steam extraction of the steam turbine enters the combustion chamber, and another part of the steam extraction of the steam turbine enters the turbine body, and the temperature measuring device is connected to the turbine for measuring the temperature of at least one of the stationary blades, the moving blades and the turbine interstage.

[0009] According to the cooling effect test equipment of the hydrogen combustion engine turbine blade according to the embodiment of the present invention, hydrogen and oxygen can be supplied to the combustion chamber through the air supply device. The hydrogen and oxygen burn in the combustion chamber to form hot steam and pass into the turbine body. Part of the steam extraction of the turbine enters the combustion chamber, and another part of the steam extraction of the turbine enters the turbine body, so that the combustion chamber and the turbine can be cooled. The temperature measuring device can measure the temperature of the stationary blades, the moving blades and / or the turbine stage, so as to obtain the key parameters characterizing the cooling effect of the cooling blades, and then analyze the influence of steam on the cooling effect of the hydrogen combustion engine turbine blades, provide support for the design of the hydrogen combustion engine, and have good practicality.

[0010] In some embodiments, the gas supply device includes a water electrolysis device and an oxygen supplement device. The water electrolysis device is used to decompose water into hydrogen and oxygen and introduce the hydrogen and oxygen into the combustion chamber. The oxygen supplement device is used to supplement oxygen into the combustion chamber.

[0011] In some embodiments, the gas supply device further includes a hydrogen supply pipeline, a first oxygen supply pipeline and a second oxygen supply pipeline. The hydrogen supply pipeline is connected to the water electrolysis device and the combustion chamber for supplying hydrogen into the combustion chamber. The first oxygen supply pipeline is connected to the water electrolysis device and the combustion chamber for supplying oxygen into the combustion chamber. The second oxygen supply pipeline is connected to the oxygen replenishing device and the combustion chamber for replenishing oxygen into the combustion chamber. The hydrogen supply pipeline is provided with at least one of a first hydrogen flowmeter, a first hydrogen thermometer and a first hydrogen pressure gauge. The first oxygen supply pipeline is provided with at least one of a first oxygen flowmeter, a first oxygen thermometer and a first oxygen pressure gauge. The second oxygen supply pipeline is provided with at least one of a second oxygen flowmeter, a second oxygen thermometer and a second oxygen pressure gauge.

[0012] In some embodiments, the hydrogen supply pipeline is provided with a first vent valve and a first vent, and the first vent is used to release the hydrogen in the hydrogen supply pipeline to the outside; and / or, the first oxygen supply pipeline is provided with a second vent valve and a second vent, and the second vent is used to release the oxygen in the first oxygen supply pipeline to the outside; and / or, the second oxygen supply pipeline is provided with a third vent valve and a third vent, and the third vent is used to release the oxygen in the second oxygen supply pipeline to the outside.

[0013] In some embodiments, the hydrogen engine turbine blade cooling effect test equipment also includes a first steam extraction pipeline and a second steam extraction pipeline, the stator blades include first-stage stator blades, one end of the first steam extraction pipeline is connected to the steam turbine, and the other end of the first steam extraction pipeline is connected to the combustion chamber; one end of the second steam extraction pipeline is connected to the steam turbine, and the other end of the second steam extraction pipeline is connected to the turbine body, so as to be used to introduce steam into the turbine body to cool the first-stage stator blades and the moving blades.

[0014] In some embodiments, the hydrogen engine turbine blade cooling effect test equipment also includes a first heat exchanger and a second heat exchanger. The first heat exchanger is arranged on the first steam extraction pipeline to heat the steam in the first steam extraction pipeline. The second heat exchanger is arranged on the second steam extraction pipeline to heat the steam in the second steam extraction pipeline.

[0015] In some embodiments, the hydrogen engine turbine blade cooling effect test equipment also includes a third steam extraction pipeline and a fourth steam extraction pipeline, and the stator blades also include second-stage stator blades and third-stage stator blades. One end of the third steam extraction pipeline is connected to the steam turbine, and the other end of the third steam extraction pipeline is connected to the turbine body, so as to be used to pass steam into the turbine body to cool the second-stage stator blades and the moving blades. One end of the fourth steam extraction pipeline is connected to the steam turbine, and the other end of the fourth steam extraction pipeline is connected to the turbine body, so as to be used to pass steam into the turbine body to cool the third-stage stator blades and the moving blades.

[0016] In some embodiments, the first steam extraction pipeline is provided with at least one of a first regulating valve, a first flow meter, a first pressure gauge and a first thermometer; and / or, the second steam extraction pipeline is provided with at least one of a second regulating valve, a second flow meter, a second pressure gauge and a second thermometer; and / or, the third steam extraction pipeline is provided with at least one of a third regulating valve, a third flow meter, a third pressure gauge and a third thermometer; and / or, the fourth steam extraction pipeline is provided with at least one of a fourth regulating valve, a fourth flow meter, a fourth pressure gauge and a fourth thermometer.

[0017] In some embodiments, the hydrogen engine turbine blade cooling effect test equipment further includes a turbine exhaust pipe, one end of the turbine exhaust pipe is connected to the turbine body, and a turbine exhaust thermometer and a turbine exhaust pressure gauge are provided on the turbine exhaust pipe.

[0018] In some embodiments, the other end of the turbine exhaust line is connected to the second heat exchanger and the first heat exchanger in sequence.

[0019] In some embodiments, the hydrogen engine turbine blade cooling effect test equipment also includes a water supply pipe, a return water pipe and a deaerator. One end of the water supply pipe is connected to the steam turbine, and the other end of the water supply pipe is connected to the deaerator. The first heat exchanger is connected to the deaerator. The water in the water supply pipe and the first heat exchanger can be passed into the deaerator for deoxygenation treatment. One end of the return water pipe is connected to the deaerator, and the other end of the return water pipe is connected to the steam turbine. The return water pipe is used to pass the water deoxygenated by the deaerator into the steam turbine.

[0020] In some embodiments, a water flow regulating valve is provided on the water supply pipeline, and a return water thermometer and a return water pressure gauge are provided on the return water pipeline.

[0021] In some embodiments, the hydrogen engine turbine blade cooling effect test equipment also includes a combustion chamber exhaust pipeline, which is connected to the combustion chamber and the turbine body, and is provided with a combustion chamber exhaust regulating valve and a combustion chamber exhaust thermometer.

[0022] In some embodiments, the temperature measuring device includes a stationary blade temperature measuring device, a telemetry and moving blade temperature measuring device and a turbine interstage temperature measuring device. The stationary blade temperature measuring device is used to measure the stationary blade temperature, the telemetry and moving blade temperature measuring device is used to measure the temperature of the moving blade, and the turbine interstage temperature measuring device is used to measure the temperature of the turbine interstage.

[0023] A method for testing the cooling effect of a hydrogen combustion engine turbine blade according to another embodiment of the present invention is applied to the hydrogen combustion engine turbine blade cooling effect testing device described in any one of the above embodiments. The method comprises the following steps:

[0024] supplying hydrogen and oxygen into the combustion chamber through the gas supply device;

[0025] Passing part of the extracted steam from the steam turbine into the combustion chamber to cool the temperature in the combustion chamber;

[0026] passing the steam in the combustion chamber into the turbine;

[0027] Passing another portion of the steam extracted from the steam turbine into the turbine body to cool the stationary blades and the moving blades;

[0028] The temperature of at least one of the stationary blades, the moving blades, and the turbine interstage is measured by the temperature measuring device.

[0029] According to the cooling effect test method of the hydrogen combustion engine turbine blade according to the embodiment of the present invention, hydrogen and oxygen can be supplied to the combustion chamber through the air supply device. The hydrogen and oxygen burn in the combustion chamber to form hot steam and pass into the turbine body. Part of the steam extraction of the steam turbine enters the combustion chamber, and another part of the steam extraction of the steam turbine enters the turbine body, so that the combustion chamber and the turbine can be cooled. The temperature measuring device can measure the temperature of the stationary blades, the moving blades and / or the turbine stage, so as to obtain the key parameters characterizing the cooling effect of the cooling blades, and then analyze the influence of steam on the cooling effect of the hydrogen combustion engine turbine blades, provide support for the design of the hydrogen combustion engine, and have good practicality.

[0030] In some embodiments, the hydrogen combustion engine turbine blade cooling effect test method further includes:

[0031] introducing hydrogen and oxygen into the combustion chamber through a water electrolysis device;

[0032] Supplementing oxygen into the combustion chamber through an oxygen supplementing device;

[0033] measuring the hydrogen inlet temperature, hydrogen inlet flow rate and hydrogen inlet pressure on the hydrogen supply pipeline by the first hydrogen flowmeter, the first hydrogen thermometer and the first hydrogen pressure gauge;

[0034] measuring the oxygen intake temperature, oxygen intake flow rate and oxygen intake pressure on the first oxygen supply pipeline by using the first oxygen flowmeter, the first oxygen thermometer and the first oxygen pressure gauge;

[0035] The oxygen intake temperature, oxygen intake flow rate and oxygen intake pressure on the second oxygen supply pipeline are measured by the second oxygen flow meter, the second oxygen thermometer and the second oxygen pressure gauge.

[0036] In some embodiments, the hydrogen combustion engine turbine blade cooling effect test method further includes: passing the first section of extraction steam of the steam turbine into the first heat exchanger for heating, and then passing the heated first section of extraction steam into the combustion chamber to cool the combustion chamber;

[0037] measuring parameters of the first-stage steam extraction by using the first regulating valve, the first flow meter, the first pressure gauge, and the first thermometer;

[0038] Passing the second-stage extraction steam of the steam turbine into the second heat exchanger for heating, and then passing the heated second-stage extraction steam into the turbine body to cool the first-stage stator blades and the moving blades;

[0039] measuring parameters of the second-stage steam extraction by using the second regulating valve, the second flow meter, the second pressure gauge, and the second thermometer;

[0040] The third stage extraction steam of the steam turbine is introduced into the turbine body to cool the second stage stator blades and the moving blades;

[0041] measuring parameters of the third stage steam extraction by means of the third regulating valve, the third flow meter, the third pressure gauge and the third thermometer;

[0042] The fourth stage extraction steam of the steam turbine is introduced into the turbine body to cool the third stage stator blades and the moving blades;

[0043] The parameters of the fourth stage steam extraction are measured by the fourth regulating valve, the fourth flow meter, the fourth pressure gauge and the fourth thermometer.

[0044] In some embodiments, the hydrogen combustion engine turbine blade cooling effect test method further includes:

[0045] discharging the gas in the turbine body through the turbine exhaust pipeline;

[0046] measuring the exhaust temperature and exhaust pressure of the turbine exhaust line by means of the turbine exhaust temperature meter and the turbine exhaust pressure meter;

[0047] passing the gas discharged from the turbine exhaust pipe into the second heat exchanger and the first heat exchanger in sequence to heat the first stage extraction steam and the second stage extraction steam of the steam turbine;

[0048] The cooling water in the turbine exhaust pipe is passed through the water supply pipe into the deaerator for deoxygenation treatment;

[0049] Controlling the flow of the water supply pipeline into the deaerator by the water supply flow regulating valve;

[0050] transporting the water deoxygenated by the deaerator to the steam turbine through the return water pipeline;

[0051] The temperature and pressure of the return water pipeline are measured by the return water thermometer and the return water pressure gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 Schematic diagram of a hydrogen engine turbine blade cooling effect test device according to an embodiment of the present invention.

[0053] Figure 2 It is a schematic diagram of a hydrogen combustion engine turbine blade cooling effect test device according to another embodiment of the present invention.

[0054] Figure 3 Schematic diagram of a method for testing the cooling effect of a hydrogen combustion engine turbine blade according to an embodiment of the present invention.

[0055] Reference numerals:

[0056] 1. Gas supply device; 11. Water electrolysis device; 12. Oxygen supplement device; 13. Hydrogen supply pipeline; 131. First hydrogen flowmeter; 132. First hydrogen thermometer; 133. First hydrogen pressure gauge; 134. First vent valve; 135. First vent; 14. First oxygen supply pipeline; 141. First oxygen flowmeter; 142. First oxygen thermometer; 143. First oxygen pressure gauge; 144. Second vent valve; 145. Second vent; 15. Second oxygen supply pipeline; 151. Second oxygen flowmeter; 152. Second oxygen thermometer; 153. Second oxygen pressure gauge; 154. Third vent valve; 155. Third vent; 156. Oxygen supplement regulating valve; 16. First compressor; 17. Second compressor; 18. Third compressor; 19. Water inlet pipeline; 191. Water inlet regulating valve; 192. Water inlet flowmeter;

[0057] 2. Combustion chamber; 21. Combustion chamber exhaust pipe; 211. Combustion chamber exhaust regulating valve; 212. Combustion chamber exhaust thermometer;

[0058] 3. Turbine; 31. Turbine body;

[0059] 411, first regulating valve; 412, first flowmeter; 413, first pressure gauge; 414, first thermometer; 421, second regulating valve; 422, second flowmeter; 423, second pressure gauge; 424, second thermometer; 431, third regulating valve; 432, third flowmeter; 433, third pressure gauge; 434, third thermometer; 441, fourth regulating valve; 442, fourth flowmeter; 443, fourth pressure gauge; 444, fourth thermometer;

[0060] 5. Temperature measuring device; 51. Stationary blade temperature measuring device; 52. Telemetry and moving blade temperature measuring device; 53. Turbine interstage temperature measuring device;

[0061] 61. First heat exchanger; 62. Second heat exchanger;

[0062] 71. Turbine exhaust pipe; 72. Turbine exhaust temperature gauge; 73. Turbine exhaust pressure gauge;

[0063] 81. Water supply pipeline; 811. Water supply flow regulating valve; 82. Return water pipeline; 821. Return water thermometer; 822. Return water pressure gauge; 83. Deaerator. DETAILED DESCRIPTION

[0064] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0065] Please refer to the following Figures 1 to 3 The cooling effect test device and method for hydrogen combustion engine turbine blades according to an embodiment of the present invention are described.

[0066] like Figure 1 and Figure 2 As shown, a hydrogen combustion engine turbine blade cooling effect test device according to an embodiment of the present invention includes: an air supply device 1, a combustion chamber 2, a turbine 3, a steam turbine (not shown), and a temperature measuring device 5. The turbine 3 can be a single-stage turbine or a multi-stage turbine. The turbine 3 includes a turbine body 31, stationary blades (not shown), and rotor blades (not shown), which are disposed within the turbine body 31. The air supply device 1 is in communication with the combustion chamber 2 to supply hydrogen and oxygen to the combustion chamber 2. The combustion chamber 2 is in communication with the turbine body 31, and the steam turbine is in communication with the combustion chamber 2 and the turbine body 31. A portion of the steam extracted from the steam turbine enters the combustion chamber 2, and another portion of the steam extracted from the steam turbine enters the turbine body 31. The temperature measuring device 5 is connected to the turbine 3 to measure the temperature of at least one of the stationary blades, rotor blades, and turbine interstages.

[0067] According to an embodiment of the present invention, a hydrogen combustion engine turbine blade cooling effect test device can supply hydrogen and oxygen to the combustion chamber 2 through the air supply device 1. The hydrogen and oxygen burn in the combustion chamber 2 to form hot steam, which is then passed into the turbine body 31. Part of the steam extraction from the steam turbine enters the combustion chamber 2, and another part of the steam extraction from the steam turbine enters the turbine body 31, thereby cooling the combustion chamber 2 and the turbine 3. The temperature measuring device 5 can measure the temperature of the stationary blades, moving blades, and / or turbine interstages, thereby obtaining key parameters characterizing the cooling effect of the cooling blades, and further analyzing the effect of steam on the cooling effect of the hydrogen combustion engine turbine blades. For example, the cooling effect test of the turbine stationary blades can be conducted, and the static cooling effect test of the moving blades of the turbine 3 can also be conducted to provide support for the design of the hydrogen combustion engine, thus having good practicality. In addition, since the steam extraction from the steam turbine is used as the cooling steam, the steam generation device can be saved, the scale of the test bench can be simplified, and the use effect of the hydrogen combustion engine turbine blade cooling effect test device is improved.

[0068] Alternatively, as Figure 2As shown, the gas supply device 1 includes a water electrolysis device 11 and an oxygen supply device 12. The water electrolysis device 11 is used to decompose water into hydrogen and oxygen and introduce them into the combustion chamber 2. The oxygen supply device 12 is used to supplement oxygen into the combustion chamber 2. It can be understood that the water electrolysis device 11 is connected to a water inlet pipe 19, which can supply pure water to the water electrolysis device 11. The water inlet pipe 19 is provided with a water inlet regulating valve 191 and a water inlet flowmeter 192, so as to control the flow of water from the water inlet pipe 19 into the water electrolysis device 11, thereby controlling the flow of hydrogen and oxygen generated by the water electrolysis device 11.

[0069] Specifically, if Figure 2 As shown, the gas supply device 1 further includes a hydrogen supply line 13, a first oxygen supply line 14, and a second oxygen supply line 15. The hydrogen supply line 13 is in communication with the water electrolysis device 11 and the combustion chamber 2 and is used to supply hydrogen into the combustion chamber 2. The first oxygen supply line 14 is in communication with the water electrolysis device 11 and the combustion chamber 2 and is used to supply oxygen into the combustion chamber 2. The second oxygen supply line 15 is in communication with the oxygen supplementing device 12 and the combustion chamber 2 and is used to supplement oxygen into the combustion chamber 2. It is understood that the oxygen supplementing device 12 can supplement oxygen into the combustion chamber 2 through the second oxygen supply line 15 to ensure that the hydrogen in the combustion chamber 2 can be fully burned.

[0070] Among them, such as Figure 2 As shown, the hydrogen supply line 13 is provided with a first hydrogen flowmeter 131, a first hydrogen thermometer 132, and a first hydrogen pressure gauge 133. The first hydrogen flowmeter 131 can measure the flow rate of hydrogen in the hydrogen supply line 13, the first hydrogen thermometer 132 can measure the temperature of the hydrogen in the hydrogen supply line 13, and the first hydrogen pressure gauge 133 can measure the pressure of the hydrogen in the hydrogen supply line 13, thereby obtaining the parameters of the hydrogen entering the combustion chamber 2 from the water electrolysis device 11.

[0071] like Figure 2 As shown, the first oxygen supply line 14 is provided with a first oxygen flowmeter 141, a first oxygen thermometer 142, and a first oxygen pressure gauge 143. The first oxygen flowmeter 141 can measure the flow rate of oxygen in the first oxygen supply line 14, the first oxygen thermometer 142 can measure the temperature of the oxygen in the first oxygen supply line 14, and the first oxygen pressure gauge 143 can measure the pressure of the oxygen in the first oxygen supply line 14, thereby obtaining the parameters of the oxygen entering the combustion chamber 2 from the water electrolysis device 11.

[0072] like Figure 2As shown, the second oxygen supply line 15 is provided with a second oxygen flowmeter 151, a second oxygen thermometer 152, and a second oxygen pressure gauge 153. The second oxygen flowmeter 151 can measure the flow rate of oxygen in the second oxygen supply line 15, the second oxygen thermometer 152 can measure the temperature of the oxygen in the second oxygen supply line 15, and the second oxygen pressure gauge 153 can measure the pressure of the oxygen in the second oxygen supply line 15, thereby obtaining the parameters of the oxygen entering the combustion chamber 2 from the oxygen replenishing device 12.

[0073] Furthermore, if Figure 2 As shown, the hydrogen supply line 13 is provided with a first vent valve 134 and a first vent 135. The first vent 135 is used to release the hydrogen in the hydrogen supply line 13 to the outside. It is understood that by controlling the first vent valve 134 and the first vent 135, hydrogen can be discharged to the atmosphere in an emergency. The first oxygen supply line 14 is provided with a second vent valve 144 and a second vent 145. The second vent 145 is used to release the oxygen in the first oxygen supply line 14 to the outside. It is understood that by controlling the second vent valve 144 and the second vent 145, oxygen can be discharged to the atmosphere in an emergency. The second oxygen supply line 15 is provided with a third vent valve 154 and a third vent 155. The third vent 155 is used to release the oxygen in the second oxygen supply line 15 to the outside. It can be understood that by controlling the third vent valve 154 and the third vent 155, oxygen can be discharged into the atmosphere in an emergency state, thereby improving the reliability of the hydrogen combustion engine turbine blade cooling effect test equipment during use.

[0074] Specifically, if Figure 2 As shown, a first compressor 16 is provided on the hydrogen supply pipeline 13, a second compressor 17 is provided on the first oxygen supply pipeline 14, and a third compressor 18 is provided on the second hydrogen supply pipeline 13, so that the gas in the combustion chamber 2 can be fully burned, thereby improving the combustion effect of the combustion chamber 2.

[0075] In some embodiments, as Figure 1 and Figure 2 As shown, the hydrogen combustion engine turbine blade cooling effect test equipment also includes a first steam extraction pipeline and a second steam extraction pipeline. The stator blades include first-stage stator blades. One end of the first steam extraction pipeline is connected to the steam turbine, and the other end of the first steam extraction pipeline is connected to the combustion chamber 2. One end of the second steam extraction pipeline is connected to the steam turbine, and the other end of the second steam extraction pipeline is connected to the turbine body 31. This is used to supply steam to the turbine body 31 to cool the first-stage stator blades and rotor blades.

[0076] Alternatively, as Figure 1 and Figure 2As shown, the hydrogen-combustion engine turbine blade cooling effect test equipment further includes a first heat exchanger 61 and a second heat exchanger 62. The first heat exchanger 61 is disposed on the first steam extraction pipeline for heating the steam in the first steam extraction pipeline, and the second heat exchanger 62 is disposed on the second steam extraction pipeline for heating the steam in the second steam extraction pipeline. It will be understood that the hydrogen-combustion engine turbine blade cooling effect test equipment of this embodiment of the present invention can heat the first section of extraction steam in the first steam extraction pipeline by disposing the first heat exchanger 61, and can heat the second section of extraction steam in the second steam extraction pipeline by disposing the second heat exchanger 62.

[0077] Furthermore, if Figure 1 and Figure 2 As shown, the hydrogen combustion engine turbine blade cooling effect test equipment also includes a third steam extraction pipeline and a fourth steam extraction pipeline, and the stator blades also include second-stage stator blades and third-stage stator blades. One end of the third steam extraction pipeline is connected to the steam turbine, and the other end of the third steam extraction pipeline is connected to the turbine body 31, so as to be used to pass steam for cooling the second-stage stator blades and moving blades into the turbine body 31. One end of the fourth steam extraction pipeline is connected to the steam turbine, and the other end of the fourth steam extraction pipeline is connected to the turbine body 31, so as to be used to pass steam for cooling the third-stage stator blades and moving blades into the turbine body 31.

[0078] Specifically, if Figure 1 and Figure 2 As shown, the first steam extraction pipeline is provided with a first regulating valve 411, a first flowmeter 412, a first pressure gauge 413, and a first thermometer 414. The second steam extraction pipeline is provided with a second regulating valve 421, a second flowmeter 422, a second pressure gauge 423, and a second thermometer 424. The third steam extraction pipeline is provided with a third regulating valve 431, a third flowmeter 432, a third pressure gauge 433, and a third thermometer 434. The fourth steam extraction pipeline is provided with a fourth regulating valve 441, a fourth flowmeter 442, a fourth pressure gauge 443, and a fourth thermometer 444.

[0079] It will be appreciated that, in order to increase the flow rate of the working medium and simultaneously cool the temperature of the combustion chamber 2, the first-stage extraction steam of the steam turbine passes through the first heat exchanger 61 through the first extraction steam pipeline before entering the combustion chamber 2. A first regulating valve 411, a first flowmeter 412, a first pressure gauge 413, and a first thermometer 414 are provided on the first extraction steam pipeline. This allows the flow rate of the first-stage extraction steam of the steam turbine entering the combustion chamber 2 to be adjusted and the desired steam parameters to be obtained.

[0080] The second-stage extraction steam of the steam turbine passes through the second extraction steam pipeline, is heated in the second heat exchanger 62, and then enters the turbine 3 to cool the first-stage stationary blades and moving blades. A second regulating valve 421, a second flow meter 422, a second pressure gauge 423, and a second thermometer 424 are provided on the second extraction steam pipeline, so as to adjust the flow rate of the second-stage extraction steam of the steam turbine entering the turbine 3 and obtain the required steam parameters.

[0081] The third-stage extraction steam from the steam turbine passes through the third extraction pipeline and directly enters turbine 3 to cool the first-stage rotor blades before being exhausted. The third extraction pipeline is equipped with a third regulating valve 431, a third flowmeter 432, a third pressure gauge 433, and a third thermometer 434. This allows the flow rate of the third-stage extraction steam entering turbine 3 to be adjusted and the desired steam parameters to be achieved.

[0082] The fourth stage of the steam turbine's extraction steam passes through a fourth extraction line, allowing cooling water to enter single-stage turbine 3 to further cool the exhaust gas. This fourth extraction line is equipped with a fourth regulating valve 441, a fourth flowmeter 442, a fourth pressure gauge 443, and a fourth thermometer 444. This allows the flow rate of the fourth stage of the steam turbine extraction steam entering turbine 3 to be adjusted, thereby achieving the desired cooling water parameters.

[0083] Furthermore, if Figure 1 and Figure 2 As shown, a combustion chamber exhaust pipe 21 is also provided between the combustion chamber 2 and the turbine 3. The combustion chamber exhaust pipe 21 is connected to the combustion chamber 2 and the turbine body 31. A combustion chamber exhaust regulating valve 211 and a combustion chamber exhaust thermometer 212 are provided on the combustion chamber exhaust pipe 21, so as to adjust the flow rate of the first stage steam extraction of the steam turbine entering the combustion chamber 2 and obtain the required steam parameters and measurement parameters of the exhaust of the combustion chamber 2.

[0084] In some embodiments, as Figure 1 and Figure 2 As shown, the hydrogen engine turbine blade cooling effectiveness test equipment also includes a turbine exhaust line 71. One end of the turbine exhaust line is connected to the turbine body 31. The turbine exhaust line 71 is equipped with a turbine exhaust temperature gauge 72 and a turbine exhaust pressure gauge 73. The other end of the turbine exhaust line 71 is connected to the second heat exchanger 62 and the first heat exchanger 61 in sequence.

[0085] Furthermore, if Figure 1 and Figure 2 As shown, the hydrogen combustion engine turbine blade cooling effect test equipment also includes a feed water pipeline 81, a return water pipeline 82 and a deaerator 83. One end of the feed water pipeline 81 is connected to the steam turbine, and the other end of the feed water pipeline 81 is connected to the deaerator 83. The first heat exchanger 61 is connected to the deaerator 83. The water in the feed water pipeline 81 and the first heat exchanger 61 can be passed into the deaerator 83 for deoxygenation treatment. One end of the return water pipeline 82 is connected to the deaerator 83, and the other end of the return water pipeline 82 is connected to the steam turbine. The return water pipeline 82 is used to pass the water deoxygenated by the deaerator 83 into the steam turbine.

[0086] It is understandable that if Figure 1 and Figure 2As shown, the turbine exhaust passes through the turbine exhaust pipe 71 and enters the second heat exchanger 62 to heat the second extraction steam of the steam turbine. After coming out of the second heat exchanger 62, the turbine exhaust enters the first heat exchanger 61 to heat the first extraction steam of the steam turbine. After coming out of the first heat exchanger 61, the turbine exhaust and part of the feed water coming through the turbine feed water pipe 81 enter the deaerator 83 together to remove oxygen in the exhaust gas and feed water, and at the same time mix and heat part of the feed water coming from the turbine side. The heated feed water returns to the feed water system of the steam turbine through the return water pipe 82. The above scheme can recover the working medium and energy of the exhaust gas and save the experimental exhaust gas recovery device.

[0087] Optionally, a feed water flow regulating valve 811 is provided on the feed water pipeline 81, and a return water thermometer 821 and a return water pressure gauge 822 are provided on the return water pipeline 82, so that the parameters of the return turbine feed water can be obtained.

[0088] In some embodiments, as Figure 1 and Figure 2 As shown, the temperature measuring device 5 includes a stationary blade temperature measuring device 51, a telemetry and moving blade temperature measuring device 52 and a turbine interstage temperature measuring device 53. The stationary blade temperature measuring device 51 is used to measure the stationary blade temperature, the telemetry and moving blade temperature measuring device 52 is used to measure the temperature of the moving blade, and the turbine interstage temperature measuring device 53 is used to measure the temperature between turbine stages, thereby obtaining the stationary blade temperature, moving blade temperature and interstage temperature of the turbine 3 under different airflow conditions, which are key parameters characterizing the cooling effect of the cooling blades.

[0089] Optionally, the stationary blades and the moving blades of the test turbine 3 adopt the designed blades, so as to better simulate the cooling effect of the designed blades.

[0090] Optionally, for the stators of the test turbine 3, the flow ratio of the exhaust gas and cooling steam of the combustion chamber 2 under the test operating conditions and the design operating conditions of the hydrogen engine are kept similar in motion, and the Mach numbers are approximately equal to ensure similar flow fields.

[0091] Optionally, for the stator blades of the test turbine 3, the Reynolds numbers of the test condition and the design condition are approximately equal, and both enter the self-modeling region with similar flow, thereby ensuring dynamic similarity.

[0092] A method for testing the cooling effect of a hydrogen combustion engine turbine blade according to another embodiment of the present invention is applied to the hydrogen combustion engine turbine blade cooling effect testing device of any one of the above embodiments. The method for testing the cooling effect of a hydrogen combustion engine turbine blade comprises the following steps:

[0093] Hydrogen and oxygen are supplied to the combustion chamber 2 through the gas supply device 1;

[0094] Pass part of the steam extracted from the steam turbine into the combustion chamber 2 to cool the temperature inside the combustion chamber 2;

[0095] The steam in the combustion chamber 2 is passed into the turbine 3;

[0096] Another part of the steam extracted from the steam turbine is passed into the turbine body 31 to cool the stationary and moving blades;

[0097] The temperatures of the stationary blades, moving blades and turbine interstages are measured by the temperature measuring device 5 .

[0098] like Figure 2 As shown, according to the cooling effect test method of the hydrogen combustion engine turbine blade of an embodiment of the present invention, hydrogen and oxygen can be supplied to the combustion chamber 2 through the air supply device 1. The hydrogen and oxygen burn in the combustion chamber 2 to form hot steam and pass into the turbine body 31. Part of the steam extraction of the turbine enters the combustion chamber 2, and the other part of the steam extraction of the turbine enters the turbine body 31, so that the combustion chamber 2 and the turbine 3 can be cooled. The temperature measuring device 5 can measure the temperature of the stationary blades, the moving blades and / or the turbine stage, so as to obtain the key parameters characterizing the cooling effect of the cooling blades, and then analyze the influence of steam on the cooling effect of the hydrogen combustion engine turbine blades, provide support for the design of the hydrogen combustion engine, and have good practicality.

[0099] Furthermore, the hydrogen engine turbine blade cooling effect test method further includes:

[0100] Hydrogen and oxygen are introduced into the combustion chamber 2 through the water electrolysis device 11;

[0101] Supplementing oxygen into the combustion chamber 2 through the oxygen supplement device 12;

[0102] The hydrogen inlet temperature, hydrogen inlet flow rate and hydrogen inlet pressure on the hydrogen supply pipeline 13 are measured by a first hydrogen flowmeter 131, a first hydrogen thermometer 132 and a first hydrogen pressure gauge 133;

[0103] The first oxygen flowmeter 141, the first oxygen thermometer 142 and the first oxygen pressure meter 143 are used to measure the oxygen intake temperature, oxygen intake flow rate and oxygen intake pressure on the first oxygen supply pipeline;

[0104] The oxygen intake temperature, oxygen intake flow rate and oxygen intake pressure on the second oxygen supply pipeline are measured by the second oxygen flow meter 151 , the second oxygen thermometer 152 and the second oxygen pressure meter 153 .

[0105] Furthermore, the hydrogen engine turbine blade cooling effect test method further includes:

[0106] The first stage extraction steam of the steam turbine is passed into the first heat exchanger 61 for heating, and then the heated first stage extraction steam is passed into the combustion chamber 2 to cool the combustion chamber 2;

[0107] Parameters of the first stage steam extraction are measured by the first regulating valve 411, the first flow meter 412, the first pressure gauge 413 and the first thermometer 414;

[0108] The second stage extraction steam of the steam turbine is passed to the second heat exchanger 62 for heating, and then the heated second stage extraction steam is passed into the turbine body 31 to cool the first stage stationary blades and moving blades;

[0109] The parameters of the second stage steam extraction are measured by the second regulating valve 421, the second flow meter 422, the second pressure gauge 423 and the second thermometer 424;

[0110] The third stage extraction steam of the steam turbine is introduced into the turbine body 31 to cool the second stage stator and rotor blades;

[0111] The parameters of the third stage steam extraction are measured by the third regulating valve 431, the third flow meter 432, the third pressure gauge 433 and the third thermometer 434;

[0112] The fourth stage extraction steam of the steam turbine is introduced into the turbine body 31 to cool the third stage stator and rotor blades;

[0113] The parameters of the fourth stage steam extraction are measured by the fourth regulating valve 441 , the fourth flow meter 442 , the fourth pressure gauge 443 and the fourth thermometer 444 .

[0114] Furthermore, the hydrogen engine turbine blade cooling effect test method further includes:

[0115] Exhausting the gas in the turbine body 31 through the turbine exhaust pipe;

[0116] The exhaust gas temperature and exhaust pressure of the turbine exhaust line are measured by the turbine exhaust temperature gauge 72 and the turbine exhaust pressure gauge 73;

[0117] The gas discharged from the turbine exhaust pipe is sequentially introduced into the second heat exchanger 62 and the first heat exchanger 61 to heat the first stage extraction steam and the second stage extraction steam of the steam turbine;

[0118] The cooling water in the turbine exhaust pipe is passed through the water supply pipe 81 to the deaerator 83 for deoxygenation treatment;

[0119] The flow rate of the water supply pipe 81 to the deaerator 83 is controlled by the water supply flow regulating valve 811;

[0120] The water deoxygenated by the deaerator 83 is transported to the steam turbine through the return water pipe 82;

[0121] The temperature and pressure of the return water pipeline 82 are measured by the return water thermometer 821 and the return water pressure gauge 822 .

[0122] Specifically, if Figure 3As shown, the hydrogen combustion engine turbine blade cooling effect test method uses the above hydrogen combustion engine turbine blade cooling effect test equipment and includes the following steps in sequence.

[0123] S1: Pure water enters the water electrolysis device 11, and the generated hydrogen and oxygen enter the combustion chamber 2 through the first compressor 16 and the second compressor 17 respectively. To ensure sufficient combustion, an oxygen supplement device 12 can be added to supplement oxygen, and it enters the combustion chamber 2 after passing through the third compressor 18. In order to increase the flow rate of the working medium and cool the temperature of the combustion chamber 2, the first stage of the steam extraction of the steam turbine is heated by the first heat exchanger 61 and then enters the combustion chamber 2 to cool the combustion chamber 2. The flow rate, temperature and pressure of hydrogen are obtained according to the hydrogen intake parameter measuring device, the flow rate, temperature and pressure of hydrogen are obtained according to the oxygen intake parameter measuring device, and the flow rate, temperature and pressure of the cooling steam in the combustion chamber 2 are obtained according to the first stage of the steam extraction parameter measuring device of the steam turbine.

[0124] S2: The second-stage steam extraction from the steam turbine passes through the second heat exchanger 62 and enters turbine 3 to cool the first-stage stator and rotor blades. The third-stage steam extraction from the steam turbine passes through the third extraction line and directly enters turbine 3 to cool the first-stage rotor blades before being exhausted. To ensure effective cooling, the fourth-stage steam extraction from the steam turbine enters turbine 3 for further cooling. A fourth regulating valve 441, a fourth flowmeter 442, a fourth pressure gauge 443, and a fourth thermometer 444 are installed on the fourth extraction line to adjust the flow rates of cooling steam and cooling water entering turbine 3 and achieve the desired cooling parameters.

[0125] S3: After turbine 3's exhaust enters turbine exhaust line 71, it passes through turbine exhaust thermometer 72 and turbine exhaust pressure gauge 73 to obtain the turbine exhaust temperature and pressure. It then passes through second heat exchanger 62 to heat the second-stage extraction steam from the turbine, and then through first heat exchanger 61 to heat the first-stage extraction steam from the turbine. After leaving first heat exchanger 61, the turbine exhaust, along with some feedwater from turbine feedwater line 81, enters deaerator 83 to remove oxygen from the exhaust and feedwater. Simultaneously, the deaerator heats some feedwater from the turbine side. The heated feedwater then enters the turbine feedwater system through return line 82. Return water thermometer 821 and return water pressure gauge 822 are installed on return water line 82 to obtain the temperature and pressure of the return turbine feedwater.

[0126] S4: The flow rates of hydrogen and oxygen are changed by adjusting the opening of the water inlet regulating valve 191 of the water inlet pipe 19 of the water electrolysis device 11, the flow rate of supplementary oxygen is changed by adjusting the opening of the oxygen supplement regulating valve 156 of the oxygen supplement device 12, the flow rate of cooling steam is changed by adjusting the opening of the steam inlet valve of the steam turbine extraction, and the flow rate of cooling water is changed by adjusting the opening of the cooling water valve.

[0127] Repeat S1 to S4, and record the measurement parameters inside turbine 3, hydrogen intake parameters, oxygen intake parameters, supplementary oxygen intake parameters, cooling steam parameters, exhaust pipe parameters, and return turbine feed water parameters under different operating conditions, so as to evaluate the blade cooling effect under different operating conditions and cooling steam.

[0128] In summary, the hydrogen combustion engine turbine blade cooling effect test device and method of the present invention can simulate the working conditions of steam cooling hydrogen combustion engine turbine blades through experimental methods, and can perform cooling effect tests on turbine static blades, and can also perform static cooling effect tests on turbine 3 moving blades.

[0129] By adjusting the flow rates of hydrogen, oxygen, and air entering combustion chamber 2, complete hydrogen combustion and simulation of various operating conditions are achieved. Since turbine extraction steam is used as cooling steam, steam generation equipment can be saved, simplifying the scale of the overhaul test bench. At the same time, the exhaust steam from the single-stage turbine 3 is not discharged directly. Instead, it passes through a two-stage heat exchanger, heats the turbine extraction steam, and then enters the turbine condenser, saving both exhaust steam energy and exhaust equipment. By measuring parameters within the single-stage turbine 3 under different operating conditions, the blade cooling effect under different operating conditions, cooling steam, and cooling water flow rates can be evaluated. The test conditions are consistent with the turbine blades under the design conditions. The test results provide experimental support for the autonomous design and operating parameter setting of hydrogen engine turbine 3 and steam cooling system, and compensate for the shortcomings of theoretical analysis.

[0130] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0131] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0132] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0133] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0134] In the present invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0135] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A hydrogen engine turbine blade cooling effect test equipment, characterized in that: include: An air supply device, a combustion chamber, a turbine, a steam turbine and a temperature measuring device, wherein the turbine comprises a turbine body, stationary blades and moving blades, wherein the stationary blades and the moving blades are arranged in the turbine body. The air supply device is in communication with the combustion chamber for supplying hydrogen and oxygen into the combustion chamber, the combustion chamber is in communication with the turbine body, the steam turbine is in communication with the combustion chamber and the turbine body, a portion of the steam extracted from the steam turbine enters the combustion chamber, and another portion of the steam extracted from the steam turbine enters the turbine body, and the temperature measuring device is connected to the turbine for measuring the temperature of at least one of the stationary blades, the moving blades, and the turbine interstage; It also includes a first steam extraction pipeline and a second steam extraction pipeline, the stator blades include first-stage stator blades, one end of the first steam extraction pipeline is connected to the steam turbine, and the other end of the first steam extraction pipeline is connected to the combustion chamber; one end of the second steam extraction pipeline is connected to the steam turbine, and the other end of the second steam extraction pipeline is connected to the turbine body, so as to supply steam to the turbine body for cooling the first-stage stator blades and the moving blades.

2. The hydrogen combustion engine turbine blade cooling effect test equipment according to claim 1, characterized in that: The gas supply device includes a water electrolysis device and an oxygen supplement device. The water electrolysis device is used to decompose water into hydrogen and oxygen and introduce the hydrogen and oxygen into the combustion chamber. The oxygen supplement device is used to supplement oxygen into the combustion chamber.

3. The hydrogen combustion engine turbine blade cooling effect test equipment according to claim 2, characterized in that: The gas supply device also includes a hydrogen supply pipeline, a first oxygen supply pipeline, and a second oxygen supply pipeline. The hydrogen supply pipeline is connected to the water electrolysis device and the combustion chamber for supplying hydrogen into the combustion chamber. The first oxygen supply pipeline is connected to the water electrolysis device and the combustion chamber for supplying oxygen into the combustion chamber. The second oxygen supply pipeline is connected to the oxygen replenishing device and the combustion chamber for replenishing oxygen into the combustion chamber. The hydrogen supply pipeline is provided with at least one of a first hydrogen flowmeter, a first hydrogen thermometer, and a first hydrogen pressure gauge. The first oxygen supply pipeline is provided with at least one of a first oxygen flowmeter, a first oxygen thermometer, and a first oxygen pressure gauge. The second oxygen supply pipeline is provided with at least one of a second oxygen flowmeter, a second oxygen thermometer, and a second oxygen pressure gauge.

4. The hydrogen combustion engine turbine blade cooling effect test equipment according to claim 3, characterized in that: The hydrogen supply pipeline is provided with a first vent valve and a first vent device, and the first vent device is used to release the hydrogen in the hydrogen supply pipeline to the outside; And / or, the first oxygen supply pipeline is provided with a second vent valve and a second vent device, the second vent device is used to release the oxygen in the first oxygen supply pipeline to the outside; And / or, a third vent valve and a third vent device are provided on the second oxygen supply pipeline, and the third vent device is used to release the oxygen in the second oxygen supply pipeline to the outside.

5. The hydrogen combustion engine turbine blade cooling effect test equipment according to any one of claims 1 to 4, characterized in that: It also includes a first heat exchanger and a second heat exchanger. The first heat exchanger is arranged on the first steam extraction pipeline to heat the steam in the first steam extraction pipeline. The second heat exchanger is arranged on the second steam extraction pipeline to heat the steam in the second steam extraction pipeline.

6. The hydrogen combustion engine turbine blade cooling effect test equipment according to claim 5, characterized in that: It also includes a third steam extraction pipeline and a fourth steam extraction pipeline. The stator blades also include second-stage stator blades and third-stage stator blades. One end of the third steam extraction pipeline is connected to the steam turbine, and the other end of the third steam extraction pipeline is connected to the turbine body, so as to supply steam for cooling the second-stage stator blades and the moving blades into the turbine body. One end of the fourth steam extraction pipeline is connected to the steam turbine, and the other end of the fourth steam extraction pipeline is connected to the turbine body, so as to supply steam for cooling the third-stage stator blades and the moving blades into the turbine body.

7. The hydrogen combustion engine turbine blade cooling effect test equipment according to claim 6, characterized in that: The first steam extraction pipeline is provided with at least one of a first regulating valve, a first flow meter, a first pressure gauge and a first thermometer; And / or, the second steam extraction pipeline is provided with at least one of a second regulating valve, a second flow meter, a second pressure gauge and a second thermometer; And / or, the third steam extraction pipeline is provided with at least one of a third regulating valve, a third flow meter, a third pressure gauge and a third thermometer; And / or, the fourth steam extraction pipeline is provided with at least one of a fourth regulating valve, a fourth flow meter, a fourth pressure gauge and a fourth thermometer.

8. The hydrogen combustion engine turbine blade cooling effect test equipment according to claim 5, characterized in that: It also includes a turbine exhaust pipeline, one end of which is connected to the turbine body, and a turbine exhaust thermometer and a turbine exhaust pressure gauge are provided on the turbine exhaust pipeline.

9. The hydrogen combustion engine turbine blade cooling effect test equipment according to claim 8, characterized in that: The other end of the turbine exhaust pipe is connected to the second heat exchanger and the first heat exchanger in sequence.

10. The hydrogen combustion engine turbine blade cooling effect test equipment according to claim 9, characterized in that: It also includes a feed water pipeline, a return water pipeline and a deaerator. One end of the feed water pipeline is connected to the steam turbine, and the other end of the feed water pipeline is connected to the deaerator. The first heat exchanger is connected to the deaerator. The water in the feed water pipeline and the first heat exchanger can be passed into the deaerator for deoxygenation treatment. One end of the return water pipeline is connected to the deaerator, and the other end of the return water pipeline is connected to the steam turbine. The return water pipeline is used to pass the water deoxygenated by the deaerator into the steam turbine.

11. The hydrogen combustion engine turbine blade cooling effect test equipment according to claim 10, characterized in that: The water supply pipeline is provided with a water supply flow regulating valve, and the return water pipeline is provided with a return water thermometer and a return water pressure gauge.

12. The hydrogen combustion engine turbine blade cooling effect test equipment according to claim 1, characterized in that: It also includes a combustion chamber exhaust pipeline, which is connected to the combustion chamber and the turbine body. The combustion chamber exhaust pipeline is provided with a combustion chamber exhaust regulating valve and a combustion chamber exhaust thermometer.

13. The hydrogen combustion engine turbine blade cooling effect test equipment according to claim 1, characterized in that: The temperature measuring device includes a stationary blade temperature measuring device, a telemetry and moving blade temperature measuring device and a turbine interstage temperature measuring device. The stationary blade temperature measuring device is used to measure the stationary blade temperature, the telemetry and moving blade temperature measuring device is used to measure the temperature of the moving blade, and the turbine interstage temperature measuring device is used to measure the temperature of the turbine interstage.

14. A method for testing the cooling effect of hydrogen combustion engine turbine blades, characterized in that: The hydrogen combustion engine turbine blade cooling effect test equipment applied to any one of claims 1 to 13, wherein the hydrogen combustion engine turbine blade cooling effect test method comprises the following steps: supplying hydrogen and oxygen into the combustion chamber through the gas supply device; Passing part of the extracted steam from the steam turbine into the combustion chamber to cool the temperature in the combustion chamber; passing the steam in the combustion chamber into the turbine; Passing another portion of the steam extracted from the steam turbine into the turbine body to cool the stationary blades and the moving blades; The temperature of at least one of the stationary blades, the moving blades, and the turbine interstage is measured by the temperature measuring device.

15. The method for testing the cooling effect of hydrogen combustion engine turbine blades according to claim 14, characterized in that: Also includes: introducing hydrogen and oxygen into the combustion chamber through a water electrolysis device; Supplementing oxygen into the combustion chamber through an oxygen supplementing device; measuring the hydrogen inlet temperature, hydrogen inlet flow rate and hydrogen inlet pressure on the hydrogen supply pipeline by the first hydrogen flowmeter, the first hydrogen thermometer and the first hydrogen pressure gauge; measuring the oxygen intake temperature, oxygen intake flow rate and oxygen intake pressure on the first oxygen supply pipeline by using the first oxygen flowmeter, the first oxygen thermometer and the first oxygen pressure gauge; The oxygen intake temperature, oxygen intake flow rate and oxygen intake pressure on the second oxygen supply pipeline are measured by the second oxygen flow meter, the second oxygen thermometer and the second oxygen pressure gauge.

16. The method for testing the cooling effect of hydrogen combustion engine turbine blades according to claim 14, characterized in that: Also includes: Passing the first stage extraction steam of the steam turbine into the first heat exchanger for heating, and then passing the heated first stage extraction steam into the combustion chamber to cool the combustion chamber; measuring parameters of the first-stage steam extraction by using the first regulating valve, the first flow meter, the first pressure gauge, and the first thermometer; Passing the second-stage extraction steam of the steam turbine into the second heat exchanger for heating, and then passing the heated second-stage extraction steam into the turbine body to cool the first-stage stator blades and the moving blades; measuring parameters of the second-stage steam extraction by using the second regulating valve, the second flow meter, the second pressure gauge, and the second thermometer; The third stage extraction steam of the steam turbine is introduced into the turbine body to cool the second stage stator blades and the moving blades; measuring parameters of the third stage steam extraction by means of the third regulating valve, the third flow meter, the third pressure gauge and the third thermometer; The fourth stage extraction steam of the steam turbine is introduced into the turbine body to cool the third stage stator blades and the moving blades; The parameters of the fourth stage steam extraction are measured by the fourth regulating valve, the fourth flow meter, the fourth pressure gauge and the fourth thermometer.

17. The method for testing the cooling effect of hydrogen combustion engine turbine blades according to claim 14, characterized in that: Also includes: discharging the gas in the turbine body through the turbine exhaust pipeline; measuring the exhaust temperature and exhaust pressure of the turbine exhaust line by means of the turbine exhaust temperature meter and the turbine exhaust pressure meter; passing the gas discharged from the turbine exhaust pipe into the second heat exchanger and the first heat exchanger in sequence to heat the first stage extraction steam and the second stage extraction steam of the steam turbine; The cooling water in the turbine exhaust pipe is passed through the water supply pipe into the deaerator for deoxygenation treatment; Controlling the flow of the water supply pipeline into the deaerator by the water supply flow regulating valve; transporting the water deoxygenated by the deaerator to the steam turbine through the return water pipeline; The temperature and pressure of the return water pipeline are measured by the return water thermometer and the return water pressure gauge.

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