A wide-range turbine efficiency test system

Abstract

The present invention provides a wide-range turbine efficiency test system, which includes a compressor and a turbine arranged at one end thereof. The compressor and the turbine are provided with lubricating oil through a lubrication system. The interior of the turbine is connected to a combustion chamber, and the combustion chamber is connected to a fuel system. A first outlet pipeline is arranged on the turbine, and a first inlet pipeline is arranged on the combustion chamber. A second inlet pipeline and a second outlet pipeline are respectively arranged on the compressor. The first inlet pipeline and the second outlet pipeline are connected through a first pipeline, and a two-position four-way valve is arranged on the first pipeline. For the wide-range turbine efficiency test system of the present invention, by adding a high-pressure gas source at the inlet of the compressor and adding a switching valve to switch the air intake source of the compressor, and controlling the pressure at the inlet of the compressor through a regulating valve, the work consumption range of the compressor is effectively broadened, and the problems of narrow test range and difficulty in comprehensively reflecting the performance of the turbine in conventional turbine efficiency tests are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of turbocharger test and measurement, and in particular relates to a wide-range turbine efficiency test system. Background Art

[0002] The compressor and the turbine are coaxially connected. The gas expands and does work in the turbine, and the compressor, as the load of the turbine, consumes work to compress the gas entering the compressor and output high-pressure gas. In a conventional turbine efficiency test, when the supercharger speed is constant, by adjusting the regulating valve at the compressor outlet, the pressure at the compressor outlet is changed while the inlet pressure remains unchanged to measure the turbine efficiency at different compressor pressure ratios. Since there are surge points and blockage points in the compressor, the flow range of the compressor is limited, the work consumption range of the compressor is limited, and the compressor, as the load of the turbine, results in a limited turbine test range.

[0003] To eliminate the influence of compressor performance on environmental condition changes, a compressor universal characteristic curve is often used to represent compressor performance. By converting the universal characteristic curve to standard atmospheric conditions and according to the principle of equal similarity parameters, the reduced speed and reduced flow can be obtained. The conversion formulas are as follows. According to formula (1):

[0004]

[0005] T * and P * are the total temperature and total pressure at the compressor inlet respectively; m acor and m a are the reduced flow and the actual flow respectively. When the compressor is fixed, the surge flow and blockage flow of the compressor are constant, and the surge flow and blockage flow are expressed in terms of the reduced flow of the compressor. When the reduced flow m acor of the compressor is constant, when the total pressure at the compressor inlet increases, that is, P * in formula (1) increases, the actual flow m a of the compressor increases, and when the total pressure at the compressor inlet decreases, the actual flow decreases. Since for the same compressor, the compressor pressure ratio range is constant, from formula (1), when the total pressure at the compressor inlet increases, the compressor flow increases. From formula (2), when m a increases and π c remains unchanged, the work consumption H tot of the compressor increases; similarly, when the total pressure at the compressor inlet decreases, the compressor flow decreases, and the work consumption of the compressor decreases.

[0006] Summary of the Invention

[0007] In view of this, the present invention aims to provide a wide-range turbine efficiency test system to solve the problems of narrow test range and difficulty in comprehensively reflecting turbine performance in the existing turbine efficiency test.

[0008] To achieve the above object, the technical solution of the present invention is implemented as follows:

[0009] A wide-range turbine efficiency test system includes a compressor and a turbine provided at one end thereof, and the compressor and the turbine are provided with lubricating oil through a lubrication system. The inside of the turbine is connected to a combustion chamber, and the combustion chamber is connected to a fuel system. A first outlet pipeline is provided on the turbine, and a first inlet pipeline is provided on the combustion chamber. A second inlet pipeline and a second outlet pipeline are respectively provided on the compressor. The first inlet pipeline and the second outlet pipeline are connected through a first pipeline, and a two-position four-way valve is provided on the first pipeline.

[0010] Further, a first regulating valve and a first flow meter are provided on the first inlet pipeline. The first inlet pipeline is used to convey a high-pressure medium to the combustion chamber. The first regulating valve is used to regulate the pressure of the conveyed high-pressure medium, and the first flow meter is used to detect the flow rate of the conveyed high-pressure medium. The combustion chamber is connected to the turbine through a second pipeline, and a turbine inlet test sensor for detecting the turbine inlet working condition temperature is provided on the second pipeline.

[0011] Further, one end of the first outlet pipeline is open to the air, the other end of the first outlet pipeline is connected to the turbine, and a turbine outlet test sensor for detecting the working condition pressure and temperature is provided on the first outlet pipeline.

[0012] Further, one end of the second inlet pipeline is connected to the compressor, the other end of the second inlet pipeline is connected to the outlet end of a switching valve. The first inlet end of the switching valve is open to the air, and the second inlet end of the switching valve is connected to a high-pressure air source.

[0013] Further, a second regulating valve and a second flow meter are respectively provided on the second inlet pipeline. The second inlet pipeline is used to convey an air source to the combustion chamber. The second regulating valve is used to regulate the pressure of the conveyed air source, and the second flow meter is used to detect the flow rate of the conveyed air source. And a compressor inlet test sensor for detecting the air source pressure and temperature is provided on the second inlet pipeline.

[0014] Further, a compressor outlet test sensor for detecting the working condition pressure and temperature at the compressor port end is provided on the second outlet pipeline. One end of the second outlet pipeline is open to the air, and a third regulating valve is provided on the second outlet pipeline. The third regulating valve is used to regulate the opening and closing path of the outlet end of the second outlet pipeline.

[0015] Compared with the prior art, the wide-range turbine efficiency test system of the present invention has the following beneficial effects:

[0016] (1) A wide-range turbine efficiency test system according to the present invention only needs to add a gas source, a switching valve and a regulating valve in front of the compressor inlet on the basis of the existing turbine supercharger test bench, without modifying the existing bench, and is easy to arrange.

[0017] (2) The wide-range turbine efficiency test system according to the present invention realizes the adjustability of the compressor inlet pressure, broadens the flow range and power consumption range of the compressor, and as a work element, the turbine broadens the work range of the turbine, that is, broadens the efficiency test range of the turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0019] Figure 1 It is a schematic diagram of a wide-range turbine efficiency test system according to an embodiment of the present invention.

[0020] DESCRIPTION OF THE REFERENCE NUMERALS

[0021] 1 - Compressor; 2 - Turbine; 3 - Combustion chamber; 4 - Fuel system; 5 - First outlet pipeline; 51 - Turbine outlet test sensor; 6 - First inlet pipeline; 61 - First regulating valve; 62 - First flowmeter; 7 - Second outlet pipeline; 71 - Compressor outlet test sensor; 72 - Third regulating valve; 8 - Second inlet pipeline; 81 - Switching valve; 82 - High-pressure gas source; 83 - Second regulating valve; 84 - Second flowmeter; 85 - Compressor inlet test sensor; 9 - First pipeline; 10 - Second pipeline; 101 - Turbine inlet test sensor; 11 - Two-position four-way valve; 12 - Lubrication system. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the 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 thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plural" is two or more than two.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0025] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0026] As Figure 1 shown, a wide-range turbine efficiency test system includes a compressor 1 and a turbine 2 provided at one end thereof, and the compressor 1 and the turbine 2 are provided with lubricating oil through a lubrication system 12. The inside of the turbine 2 communicates with a combustion chamber 3, and the combustion chamber 3 communicates with a fuel system 4. A first outlet pipeline 5 is provided on the turbine 2, and a first inlet pipeline 6 is provided on the combustion chamber 3. A second inlet pipeline 8 and a second outlet pipeline 7 are respectively provided on the compressor 1. The first inlet pipeline 6 and the second outlet pipeline 7 are connected through a first pipeline 9, and a two-position four-way valve 11 is provided on the first pipeline 9. The two-position four-way valve 11 is used to open and close the passage between the first inlet pipeline 6 and the second outlet pipeline 7 to meet the requirements of the self-circulation test of the test turbine and the external air blowing test of the turbine. When implementing this system, only a gas source, a switching valve, and a regulating valve need to be added in front of the compressor air inlet on the basis of the existing turbine supercharger test bench, without modifying the existing bench, which is easy to arrange, and realizes the adjustability of the compressor inlet pressure, broadens the flow range and power consumption range of the compressor, and the turbine, as a work element, broadens the work range of the turbine, that is, broadens the efficiency test range of the turbine.

[0027] A first regulating valve 61 and a first flowmeter 62 are provided on a first inlet pipeline 6, and the first inlet pipeline 6 is used to convey a high-pressure medium to a combustion chamber 3. The first regulating valve 61 is used to regulate the pressure of the conveyed high-pressure medium. The high-pressure medium is compressed air and fuel. The first flowmeter 62 is used to detect the flow rate of the conveyed high-pressure medium. The combustion chamber 3 is connected to a turbine 2 through a second pipeline 10, and a turbine inlet test sensor 101 for detecting the inlet operating condition temperature of the turbine 2 is provided on the second pipeline 10.

[0028] One end of a first outlet pipeline 5 is open to the air, and the other end of the first outlet pipeline 5 is connected to the turbine 2. A turbine outlet test sensor 51 for detecting the operating condition pressure and temperature is provided on the first outlet pipeline 5.

[0029] One end of a second inlet pipeline 8 is connected to a compressor 1, and the other end of the second inlet pipeline 8 is connected to the outlet end of a switching valve 81. The first inlet end of the switching valve 81 is open to the air, and the second inlet end of the switching valve 81 is connected to a high-pressure gas source 82.

[0030] A second regulating valve 83 and a second flowmeter 84 are respectively provided on the second inlet pipeline 8. The second inlet pipeline 8 is used to convey a gas source to the combustion chamber 3. The second regulating valve 83 is used to regulate the pressure of the conveyed gas source. The second flowmeter 84 is used to detect the flow rate of the conveyed gas source. A compressor inlet test sensor 85 for detecting the gas source pressure and temperature is provided on the second inlet pipeline 8.

[0031] A compressor outlet test sensor 71 for detecting the operating condition pressure and temperature at the compressor outlet end is provided on a second outlet pipeline 7. One end of the second outlet pipeline 7 is open to the air. A third regulating valve 72 is provided on the second outlet pipeline 7. The third regulating valve 72 is used to regulate the opening and closing path of the outlet end of the second outlet pipeline 7.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wide - range turbine efficiency test system, characterized in that: It includes a compressor (1) and a turbine (2) provided at one end thereof, and the compressor (1) and the turbine (2) are provided with lubricating oil by a lubrication system (12). The inside of the turbine (2) is connected to a combustion chamber (3), and the combustion chamber (3) is connected to a fuel system (4). A first outlet pipeline (5) is provided on the turbine (2), and a first inlet pipeline (6) is provided on the combustion chamber (3). A second inlet pipeline (8) and a second outlet pipeline (7) are respectively provided on the compressor (1). The first inlet pipeline (6) and the second outlet pipeline (7) are connected through a first pipeline (9), and a two - position four - way valve (11) is provided on the first pipeline (9); A first regulating valve (61) and a first flowmeter (62) are provided on the first inlet pipeline (6), and the first inlet pipeline (6) is used to convey high - pressure medium to the combustion chamber (3). The first regulating valve (61) is used to adjust the pressure of the conveyed high - pressure medium, and the first flowmeter (62) is used to detect the flow rate of the conveyed high - pressure medium. The combustion chamber (3) is connected to the turbine (2) through a second pipeline (10), and a turbine inlet test sensor (101) for detecting the inlet working condition temperature of the turbine (2) is provided on the second pipeline (10); One end of the first outlet pipeline (5) is open to the air, the other end of the first outlet pipeline (5) is connected to the turbine (2), and a turbine outlet test sensor (51) for detecting the working condition pressure and temperature is provided on the first outlet pipeline (5).

2. A wide - range turbine efficiency test system according to claim 1, characterized in that: One end of the second inlet pipeline (8) is connected to the compressor (1), the other end of the second inlet pipeline (8) is connected to the outlet end of a switching valve (81), the first inlet end of the switching valve (81) is open to the air, and the second inlet end of the switching valve (81) is connected to a high - pressure gas source (82).

3. A wide - range turbine efficiency test system according to claim 1, characterized in that: A second regulating valve (83) and a second flowmeter (84) are respectively provided on the second inlet pipeline (8), and the second inlet pipeline (8) is used to convey gas source to the combustion chamber (3). The second regulating valve (83) is used to adjust the pressure of the conveyed gas source, the second flowmeter (84) is used to detect the flow rate of the conveyed gas source, and a compressor inlet test sensor (85) for detecting the gas source pressure and temperature is provided on the second inlet pipeline (8).

4. A wide - range turbine efficiency test system according to claim 1, characterized in that: A compressor outlet test sensor (71) for detecting the working condition pressure and temperature at the compressor outlet end is provided on the second outlet pipeline (7), one end of the second outlet pipeline (7) is open to the air, and a third regulating valve (72) is provided on the second outlet pipeline (7). The third regulating valve (72) is used to adjust the opening and closing path of the outlet end of the second outlet pipeline (7).

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