A turbine component transient test inlet and outlet pressure simulation system and method

Abstract

The application relates to a turbine component transition state test import and export pressure simulation system and a method thereof, wherein the system comprises: an air inlet pipeline, the import end of which is communicated with a high-pressure gas source, the export end of which is communicated with a turbine import, and the air inlet pipeline is sequentially provided with an air inlet adjusting valve and an import pressure sensor; an air outlet pipeline, the export end of which is communicated with a turbine outlet, and the air outlet pipeline is sequentially provided with an outlet pressure sensor and an ejector; a gas release pipeline, the import end of which is communicated with the air inlet pipeline and is located upstream of the air inlet adjusting valve, and the gas release pipeline is provided with a gas release adjusting valve; an injection pipeline, the import end of which is communicated with the air inlet pipeline and is located upstream of the air inlet adjusting valve, and the export end of the injection pipeline is communicated with an injection hole of the ejector; a monitor, which is connected with the air inlet adjusting valve and the gas release adjusting valve, can be configured and controlled according to an air inlet adjusting valve opening degree control curve and a gas release adjusting valve opening degree control curve, controls the opening degrees of the air inlet adjusting valve and the gas release adjusting valve, and is connected with the import pressure sensor and the outlet pressure sensor to monitor the turbine import pressure and the outlet pressure.

Description

Technical Field

[0001] This application belongs to the field of turbine component transient state testing technology, specifically relating to a turbine component transient state testing inlet and outlet pressure simulation system and method. Background Technology

[0002] Turbines are the core hot-end components of aero engines and gas turbines. The internal flow, heat transfer, and geometry changes during the transition state are extremely complex, making them the part facing the highest risks.

[0003] Conducting transient state tests on turbine components can directly obtain effective data on changes in aerodynamic, thermodynamic, and structural parameters during the turbine's transient state, which can be used to support the matching design of aero engines and gas turbines.

[0004] In a complete machine environment, the turbine's inlet pressure is affected by upstream components such as the combustion chamber, and its outlet pressure is affected by downstream components such as the nozzle. Both the inlet and outlet pressures change according to a certain pattern and have instantaneous characteristics in the transition state. When conducting turbine component transition state tests, it is necessary to quickly regulate the turbine's inlet and outlet pressures and simulate the turbine's inlet and outlet pressures according to the instantaneous change curve.

[0005] Currently, when conducting transient tests on turbine components, pneumatic valves are often installed in the intake manifold. The turbine inlet pressure is adjusted by controlling the opening and closing stroke time of these valves. However, this technical approach has the following drawbacks:

[0006] 1) Simply controlling the opening and closing rate of the pneumatic valves on the intake pipe to regulate the turbine inlet pressure is insufficient to accurately reproduce the transient change law of the turbine inlet pressure under the overall machine environment, and it is difficult to guarantee the accuracy of the test results.

[0007] 2) The turbine outlet pressure was not actively controlled, and the outlet pressure changes significantly with the overall machine environment, making it difficult to guarantee the reliability of the test results.

[0008] This application is made in view of the aforementioned technical deficiencies.

[0009] It should be noted that the above background information is only used to assist in understanding the inventive concept and technical solution of this application, and it does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0010] The purpose of this application is to provide a system and method for simulating the inlet and outlet pressures of a turbine component in a transient test, so as to overcome or mitigate at least one of the known technical defects.

[0011] The technical solution of this application is:

[0012] One aspect provides a turbine component transient state test inlet and outlet pressure simulation system, comprising:

[0013] The intake pipe has an inlet end connected to a high-pressure air source and an outlet end connected to the turbine inlet. An intake regulating valve and an inlet pressure sensor are installed on it in sequence.

[0014] The exhaust pipe has its outlet end connected to the turbine outlet, and an outlet pressure sensor and an ejector are installed on it in sequence.

[0015] The venting line has its inlet end connected to the intake line and is located upstream of the intake regulating valve. A venting regulating valve is installed on it.

[0016] The ejector line has its inlet end connected to the air intake line, located upstream of the air intake regulating valve, and its outlet connected to the ejector port of the ejector.

[0017] The monitor connects to the intake regulating valve and the exhaust regulating valve. It can be configured and controlled according to the intake regulating valve opening control curve and the exhaust regulating valve opening control curve to control the opening of the intake regulating valve and the exhaust regulating valve. It can also connect to the inlet pressure sensor and the outlet pressure sensor to monitor the turbine inlet pressure and outlet pressure.

[0018] According to at least one embodiment of this application, in the above-described turbine component transition state test inlet and outlet pressure simulation system, the intake regulating valve and the exhaust regulating valve are fast-response hydraulic valves.

[0019] According to at least one embodiment of this application, in the above-described turbine component transition state test inlet and outlet pressure simulation system, the ejector includes:

[0020] The contraction section has ejector holes on its sidewalls;

[0021] The mixing chamber's inlet is connected to the outlet of the contraction section;

[0022] The diffuser section has its inlet connected to the outlet of the mixing chamber.

[0023] The intake pipe is constricted, and its outlet extends through the constriction section into the mixing chamber. It is connected to the constriction section and is installed on the exhaust pipe along with the constriction section, the mixing chamber, and the diffuser section.

[0024] According to at least one embodiment of this application, in the above-described turbine component transition state test inlet and outlet pressure simulation system, a filter, a heater, and a flow meter are sequentially installed on the intake pipe, wherein,

[0025] The filter and heater are located upstream of the vent line and ejector line;

[0026] The flow meter is located downstream of the venting line and ejector line, and upstream of the intake regulating valve;

[0027] The monitor is connected to the heater to control the airflow temperature in the intake duct;

[0028] The monitor is connected to a flow meter to monitor the turbine inlet flow.

[0029] According to at least one embodiment of this application, in the above-mentioned turbine component transition state test inlet and outlet pressure simulation system, an ejector regulating valve is provided on the ejector pipe;

[0030] The monitor is connected to the ejector control valve to control its opening.

[0031] According to at least one embodiment of this application, the above-described turbine component transition state test inlet and outlet pressure simulation system further includes:

[0032] A muffler is connected to the outlet of the exhaust pipe or vent pipe.

[0033] On the other hand, a method for simulating the inlet and outlet pressures of turbine components during transient testing is provided, including:

[0034] Control the opening of the intake regulating valve and the exhaust regulating valve so that the monitored turbine inlet pressure and outlet pressure match the initial pressure of the instantaneous regular change curve of the turbine inlet pressure and outlet pressure under the transient state.

[0035] Configure the intake regulating valve opening control curve and the exhaust regulating valve opening control curve to control the opening of the intake regulating valve and the exhaust regulating valve, and monitor the turbine inlet pressure and outlet pressure in real time.

[0036] If the real-time monitoring of turbine inlet and outlet pressure changes does not match the instantaneous regular change curves of inlet and outlet pressure under turbine transient state, then the intake regulating valve opening control curve and the venting regulating valve opening control curve are reconfigured to control the opening of the intake regulating valve and the venting regulating valve until the real-time monitoring of turbine inlet and outlet pressure changes matches the instantaneous regular change curves of inlet and outlet pressure under turbine transient state. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the turbine component transition state test inlet and outlet pressure simulation system provided in the embodiments of this application;

[0038] Figure 2 This is a schematic diagram of the ejector provided in an embodiment of this application;

[0039] Figure 3 This is a schematic diagram of the intake regulating valve opening control curve and the exhaust regulating valve opening control curve provided in the embodiments of this application;

[0040] in:

[0041] 1-Intake pipe; 2-Exhaust pipe; 3-Intake regulating valve; 4-Inlet pressure sensor; 5-Outlet pressure sensor; 6-Ejector; 7-Break pipe; 8-Break regulating valve; 9-Ejector pipe; 10-Monitor; 11-Contraction section; 12-Mixing chamber; 13-Contraction intake pipe; 14-Filter; 15-Heater; 16-Flow meter; 17-Ejector regulating valve; 18-Muffler; 19-Turbine; 20-Diffuser section.

[0042] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual size of the product. Furthermore, the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Detailed Implementation

[0043] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0044] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," and "outer," etc., used in this application description to indicate relative direction or positional relationship are used only to indicate relative orientation or positional relationship, and do not imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, and therefore should not be construed as a limitation on this application. The terms "first," "second," "third," and similar terms used in this application description are used only for descriptive purposes to distinguish different components, and should not be construed as indicating or implying relative importance. The terms "a," "one," or "the," etc., used in this application description should not be construed as an absolute limitation on quantity, but should be construed as indicating the existence of at least one. The terms "including," "comprising," etc., used in this application description mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0045] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0046] The following is in conjunction with the appendix Figures 1 to 3 This application will be described in further detail.

[0047] On the one hand, a system for simulating the inlet and outlet pressures of turbine components during transient testing is provided, such as... Figure 1 As shown, it includes:

[0048] The intake pipe 1 has an inlet end connected to a high-pressure air source and an outlet end connected to the inlet of turbine 19. An intake regulating valve 3 and an inlet pressure sensor 4 are sequentially installed on it.

[0049] Exhaust pipe 2, whose outlet end is connected to the outlet of turbine 19, and an outlet pressure sensor 5 and an ejector 6 are sequentially installed on it.

[0050] The venting pipe 7 has its inlet end connected to the intake pipe 1 and is located upstream of the intake regulating valve 3. A venting regulating valve 8 is installed on it.

[0051] The ejector pipe 9 has its inlet end connected to the air intake pipe 1 and is located upstream of the air intake regulating valve 3, and its outlet is connected to the ejector hole of the ejector 6.

[0052] Monitor 10 is connected to intake regulating valve 3 and exhaust regulating valve 8. It can be configured and controlled according to the intake regulating valve opening control curve and the exhaust regulating valve opening control curve to control the opening of intake regulating valve 3 and exhaust regulating valve 8. It is also connected to inlet pressure sensor 4 and outlet pressure sensor 5 to monitor the inlet pressure and outlet pressure of turbine 19. The acquisition frequency of inlet pressure sensor 4 and outlet pressure sensor 5 is >100HZ.

[0053] Regarding the turbine component transition state test inlet and outlet pressure simulation system disclosed in the above embodiments, those skilled in the art will understand that the opening of the intake regulating valve 3 and the exhaust regulating valve 8 can be controlled by configuring the intake regulating valve opening control curve and the exhaust regulating valve opening control curve, thereby controlling the flow rate of the intake pipe 1 and the exhaust pipe 2. This allows for rapid regulation of the turbine 19 inlet and outlet pressures during the turbine component transition state test, simulating the transient changes in the inlet and outlet pressures of the turbine 19 under the overall machine environment during the transition state, ensuring the reliability and accuracy of the test. The method for determining the intake regulating valve opening control curve and the exhaust regulating valve opening control curve can be specifically referred to the turbine component transition state test inlet and outlet pressure simulation method disclosed in this application.

[0054] In some optional embodiments, in the above-mentioned turbine component transition state test inlet and outlet pressure simulation system, the intake regulating valve 3 and the exhaust regulating valve 8 are fast-response hydraulic valves composed of a valve control system, a hydraulic servo valve, a hydraulic rotary cylinder, a valve plate, etc., with a control cycle ≤50ms and a response speed ≤0.5s.

[0055] In a fast-response hydraulic valve, the valve plate opening is controlled by a rotary cylinder. The opening control curve is configured by the monitor 10 and sent to the valve control system. The opening control curve is converted into a control signal, which drives the hydraulic servo valve to achieve fast and high-precision action of the rotary cylinder with hydraulic oil, so that the valve plate opening is highly consistent with the opening control curve.

[0056] In some alternative embodiments, in the aforementioned turbine component transition state test inlet and outlet pressure simulation system, the ejector 6, as... Figure 2 As shown, it includes:

[0057] The contraction section 11 has ejection holes on its sidewalls;

[0058] The mixing chamber 12 has its inlet connected to the outlet of the contraction section 11;

[0059] The diffuser section 20 has its inlet connected to the outlet of the mixing chamber 12.

[0060] The intake pipe 13 is constricted, and its outlet extends through the constriction section 11 into the mixing chamber 12. It is connected to the constriction section 11 and is arranged on the exhaust pipe 2 along with the constriction section 11, the mixing chamber 12, and the diffuser section 20.

[0061] Regarding the turbine component transition state test inlet and outlet pressure simulation system disclosed in the above embodiments, those skilled in the art will understand that the airflow in the ejector pipe 9 can be used as ejector gas, which enters the annular gap between the contraction section 11 and the contraction intake pipe 13 through the ejector hole or ejector annular gap, and is accelerated, so that it can be injected into the mixing chamber 12 at an extremely high speed, causing the turbine 19 outlet to flow out and be discharged through the exhaust pipe 2. The airflow entering the contraction intake pipe 13 is entrained into the mixing chamber 12 under shear action. The two airflows exchange momentum and energy in the mixing chamber 12, and gradually form a single uniform mixed airflow that flows out through the diffuser section 20.

[0062] For the turbine component transition state test inlet and outlet pressure simulation system disclosed in the above embodiments, those skilled in the art will understand that its design uses an annular outflowing ejector airflow to eject the airflow discharged from the turbine 19 outlet from the outer periphery with shearing and entrainment action, which can reduce the resistance of the airflow discharged from the turbine 19 outlet, has high ejector sensitivity, and ensures rapid following between the ejector discharge airflow and the ejector airflow, thereby enabling rapid adjustment of the turbine 19 outlet pressure.

[0063] In some optional embodiments, in the above-described turbine component transition state test inlet and outlet pressure simulation system, a filter 14, a heater 15, and a flow meter 16 are sequentially installed on the intake pipe 1, wherein,

[0064] Filter 14 and heater 15 are located upstream of vent pipe 7 and ejector pipe 9;

[0065] The flow meter 16 is located downstream of the venting pipe 7 and the ejector pipe 9, and upstream of the inlet regulating valve 3.

[0066] The monitor 10 is connected to the heater 15 so as to control the airflow temperature in the intake pipe 1;

[0067] The monitor 10 is connected to the flow meter 16 to monitor the inlet flow of the turbine 19.

[0068] In some optional embodiments, in the above-described turbine component transition state test inlet and outlet pressure simulation system, an ejector regulating valve 17 is provided on the ejector line 9;

[0069] The monitor 10 is connected to the ejector control valve 17 so as to control the opening degree of the ejector control valve 17.

[0070] In some optional embodiments, the above-described turbine component transition state test inlet and outlet pressure simulation system further includes:

[0071] The muffler 18 is connected to the outlet of the exhaust pipe 2 and the vent pipe 7.

[0072] On the other hand, a method for simulating the inlet and outlet pressures of turbine components during transient testing is provided, including:

[0073] Control the opening of the intake regulating valve 3 and the exhaust regulating valve 8 so that the monitored inlet pressure and outlet pressure of turbine 19 match the initial pressure of the instantaneous change curve of inlet pressure and outlet pressure of turbine 19 under transient state.

[0074] Configure the intake regulating valve opening control curve and the exhaust regulating valve opening control curve to control the opening of the intake regulating valve 3 and the exhaust regulating valve 8, and monitor the inlet pressure and outlet pressure of the turbine 19 in real time.

[0075] If the real-time monitoring of the changes in the inlet and outlet pressures of turbine 19 does not match the instantaneous change curves of the inlet and outlet pressures under the transition state of turbine 19, then the intake regulating valve opening control curve and the exhaust regulating valve opening control curve should be reconfigured to control the opening of intake regulating valve 3 and exhaust regulating valve 8 until the real-time monitoring of the changes in the inlet and outlet pressures of turbine 19 matches the instantaneous change curves of the inlet and outlet pressures under the transition state of turbine 19. Subsequently, in the turbine component transition state test, the opening of intake regulating valve 3 and exhaust regulating valve 8 can be controlled according to the final intake regulating valve opening control curve and exhaust regulating valve opening control curve to highly reproduce the actual instantaneous changes in the turbine's inlet and outlet pressures under the whole machine environment, ensuring the reliability and accuracy of the test results. In a specific embodiment, the intake regulating valve opening control curve and the exhaust regulating valve opening control curve are designed as follows: Figure 3 As shown, during the regulation of the inlet and outlet pressures of turbine 2, the ejector regulating valve 17 can be controlled to remain at an appropriate opening degree, or it can be adjusted slightly according to the actual situation.

[0076] The turbine component transition state test inlet and outlet pressure simulation method disclosed in the above embodiments is implemented based on the turbine component transition state test inlet and outlet pressure simulation system disclosed in the above embodiments. For specific details, please refer to the relevant description of the turbine component transition state test inlet and outlet pressure simulation system. Its technical effects can also refer to the technical effects of the relevant parts of the turbine component transition state test inlet and outlet pressure simulation system, which will not be repeated here.

[0077] The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0078] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A system for simulating inlet and outlet pressures in a turbine component transient test, characterized in that, include: The intake pipe (1) is connected to a high-pressure air source at its inlet end and to the turbine (19) inlet at its outlet end. An intake regulating valve (3) and an inlet pressure sensor (4) are installed on it in sequence. The exhaust pipe (2) is connected to the turbine (19) outlet at its outlet end, and an outlet pressure sensor (5) and an ejector (6) are installed on it in sequence. The venting pipe (7) is connected to the intake pipe (1) at its inlet end and is located upstream of the intake regulating valve (3). A venting regulating valve (8) is installed on it. The ejector pipe (9) has its inlet end connected to the air intake pipe (1), located upstream of the air intake regulating valve (3), and its outlet connected to the ejector hole of the ejector (6); The monitor (10) is connected to the intake regulating valve (3) and the exhaust regulating valve (8). It can configure and control the opening of the intake regulating valve (3) and the exhaust regulating valve (8) according to the intake regulating valve opening control curve and the exhaust regulating valve opening control curve. It is also connected to the inlet pressure sensor (4) and the outlet pressure sensor (5) to monitor the turbine (19) inlet pressure and outlet pressure. The ejector (6) includes: The contraction section (11) has ejection holes on its sidewalls; The mixing chamber (12) has its inlet connected to the outlet of the contraction section (11); The diffuser section (20) has its inlet connected to the outlet of the mixing chamber (12); The intake pipe (13) is constricted, and its outlet extends through the constriction section (11) into the mixing chamber (12). It is connected to the constriction section (11) and is set on the exhaust pipe (2) together with the constriction section (11), the mixing chamber (12), and the diffuser section (20).

2. The turbine component transient state test inlet and outlet pressure simulation system according to claim 1, characterized in that, The intake regulating valve (3) and the exhaust regulating valve (8) are fast-response hydraulic valves.

3. The turbine component transition state test inlet and outlet pressure simulation system according to claim 2, characterized in that, A filter (14), a heater (15), and a flow meter (16) are sequentially installed on the intake pipe (1). The filter (14) and heater (15) are located upstream of the vent pipe (7) and ejector pipe (9); The flow meter (16) is located downstream of the venting line (7) and the ejector line (9), and upstream of the intake regulating valve (3); The monitor (10) is connected to the heater (15) to control the airflow temperature in the intake pipe (1); The monitor (10) is connected to the flow meter (16) to monitor the inlet flow of the turbine (19).

4. The turbine component transient state test inlet and outlet pressure simulation system according to claim 3, characterized in that, An ejector regulating valve (17) is installed on the ejector line (9); The monitor (10) is connected to the ejector control valve (17) to control the opening of the ejector control valve (17).

5. The turbine component transient state test inlet and outlet pressure simulation system according to claim 4, characterized in that, Also includes: The muffler (18) is connected to the outlet of the exhaust pipe (2) and the vent pipe (7).

6. A method for simulating inlet and outlet pressures in a turbine component transient test, implemented based on the turbine component transient test inlet and outlet pressure simulation system described in claim 5, characterized in that, include: Control the opening of the intake regulating valve (3) and the exhaust regulating valve (8) so that the monitoring turbine (19) inlet pressure and outlet pressure are consistent with the starting pressure of the instantaneous regular change curve of the inlet pressure and outlet pressure of the turbine (19) under the transition state. Configure the intake regulating valve opening control curve and the exhaust regulating valve opening control curve to control the opening of the intake regulating valve (3) and the exhaust regulating valve (8), and monitor the turbine (19) inlet pressure and outlet pressure in real time. If the changes in the inlet and outlet pressures of the turbine (19) are monitored in real time and do not match the instantaneous regular change curves of the inlet and outlet pressures under the transition state of the turbine (19), then the opening control curves of the intake regulating valve and the venting regulating valve are reconfigured to control the opening of the intake regulating valve (3) and the venting regulating valve (8) until the changes in the inlet and outlet pressures of the turbine (19) are monitored in real time and match the instantaneous regular change curves of the inlet and outlet pressures under the transition state of the turbine (19).

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