CN107091747B - Method for testing heat dissipation performance of air inlet device - Google Patents
Method for testing heat dissipation performance of air inlet device Download PDFInfo
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- CN107091747B CN107091747B CN201710404085.3A CN201710404085A CN107091747B CN 107091747 B CN107091747 B CN 107091747B CN 201710404085 A CN201710404085 A CN 201710404085A CN 107091747 B CN107091747 B CN 107091747B
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Abstract
The invention provides a method for testing the heat dissipation performance of an air inlet device of a turboshaft engine. The test method comprises the following steps: arranging an air inlet device in the heat dispersion test system of the air inlet device; starting a lubricating oil system of the heat radiation performance test system of the air inlet device; adjusting the oil inlet temperature of the lubricating oil to a corresponding temperature according to a test scheme; regulating the flow of the lubricating oil inlet to the corresponding flow according to the test scheme; starting a fan unit of the heat dissipation performance test system of the air inlet device; the main airflow flow of the air inlet device is regulated to be stable, and the temperature is regulated; adjusting the opening of a valve of the scavenging flow pipeline according to the test scheme to enable the scavenging flow and the central flow to be in corresponding states; and (5) stabilizing for a period of time in a corresponding state, and collecting test parameters of the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet.
Description
Technical Field
The invention relates to the field of testing heat dissipation performance of a turboshaft engine air inlet device, in particular to a method for testing heat dissipation performance of a turboshaft engine air inlet device.
Background
The integral particle separator is an air intake device specific to a turboshaft engine, and its flow path divides the core flow and the purge flow. The main functions of the device are air intake and foreign objects (sand dust, leaves, grass, birds and the like) entering an air inlet of the engine are removed, so that the foreign objects are prevented from entering the inner part of an air compressor of the engine to wear parts or influence the stable work of the engine, and the separation principle is that an inertia force field is established through a proper runner profile or a blade grid to achieve the purpose of separating the foreign objects.
The main casing of the air flow clearing channel of the engine lubricating oil tank and the particle separator is designed integrally, and besides the function of separating sand and dust, the main casing also has the functions of preventing ice, supplying oil return, storing lubricating oil, returning oil and dissipating heat of the air flow channel, and the internal structure of the main casing is very complex.
When the anti-icing air inlet device is normally used, the air flow channel is easy to freeze, so that the blade type theoretical flow channel is changed, and the performance of the air inlet device is influenced, therefore, hot lubricating oil is introduced into the main box for clearing the air flow channel, the blades and the flow channel are anti-iced through an inner cavity flow path, and the air inlet heat dissipation requirement and the lubricating oil lubrication system heat dissipation requirement are designed into a whole.
The main casing consists of an outer cavity, an inner cavity and a cleaning blade, wherein most of the cavities are lubricating oil tanks of the engine, and a small part of the cavities are connected with the cleaning blade and the inner cavity to form a lubricating oil flow path which flows in a rotary mode, and hot lubricating oil flows in the cleaning blade in a rotary mode, so that the blade anti-icing function is achieved, and the lubricating oil is cooled.
Based on the above functions and requirements, it is necessary to design a test scheme to know the relationship between the purge airflow of the air inlet device and the heat dissipation performance of the lubricating oil tank of the main case, the center flow and the heat dissipation performance, the inlet temperature of different lubricating oils and the heat dissipation performance, and the heat dissipation condition of the lubricating oil tank of the main case of the air inlet device.
Meanwhile, the test can verify and analyze whether the structure and the manufacturing quality of the casting blank of the oil tank inner cavity and the oil circuit of the main engine box of the air inlet device meet the pattern requirements, whether the oil circuit of each inlet and outlet is smooth and works normally, so as to ensure the safe and reliable work of the lubricating oil tank and the engine.
Disclosure of Invention
In view of the above-described state of the art, the present invention provides
A test method for testing the heat dissipation performance of an air inlet device of a turboshaft engine applies an air inlet device heat dissipation performance test system, wherein the test system comprises an oil lubricating system, a data acquisition system, a flow clearing air system, a central flow air system, a fan set and a test platform; the lubricating oil system is used for supplying oil and adjusting pressure of a lubricating oil tank of the turboshaft engine, the data acquisition system is used for monitoring the temperature and the pressure of the lubricating oil in the test process, the scavenging flow air system is used for providing scavenging flow, the central flow air system is used for providing stable central flow, and the test platform is used for mounting and supporting the air inlet device; the lubricating oil system is connected with a lubricating oil tank of the air inlet device through a lubricating oil pipeline; the data acquisition system is connected with the lubricating oil system and the air inlet device; the purge flow air system and the core flow air system are respectively connected with a purge flow channel and a core flow channel of the air inlet device, and the test method comprises the following steps:
a. arranging an air inlet device in the heat dispersion test system of the air inlet device;
b. starting a lubricating oil system of the heat radiation performance test system of the air inlet device;
c. adjusting the oil inlet temperature of the lubricating oil to a corresponding temperature according to a test scheme;
d. regulating the flow of the lubricating oil inlet to the corresponding flow according to the test scheme;
e. starting a fan unit of the heat dissipation performance test system of the air inlet device;
f. adjusting the main airflow flow of the air inlet device to a stable state, and adjusting the temperature;
g. adjusting the opening of a valve of the scavenging flow pipeline according to the test scheme to enable the scavenging flow and the central flow to be in corresponding states;
h. and (5) stabilizing for a period of time in a corresponding state, and collecting test parameters of the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet.
In one embodiment of the invention, the oil feed temperature of step c is 90 ℃; the inlet flow of the step d is 10L/min, 13L/min and 15L/min; in the step g, the central flow is 10kg/s, and the scavenging flow is 1.2kg/s, 1.4kg/s, 1.6kg/s, 1.8kg/s and 2 kg/s; the temperature of the main air flow in the step f is room temperature; and acquiring test parameters of the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet according to the state points. The method is used for testing the relation between the medium flow and the heat dissipation performance.
In one embodiment of the invention, the oil feed temperature of step c is 105 ℃, 120 ℃, 135 ℃; the inlet flow of the step d is 10L/min, 13L/min and 15L/min; in the step g, the central flow is 10kg/s, and the scavenging flow is 1.2kg/s, 1.4kg/s, 1.6kg/s, 1.8kg/s and 2 kg/s; the temperature of the main air flow in the step f is room temperature; and acquiring test parameters of the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet according to the state points. The method is used for testing the relation between the oil inlet temperature of the lubricating oil and the heat dissipation performance.
In one embodiment of the invention, the oil feed temperature of step c is 130 ℃; d, the inlet flow rate of the step d is 13 +/-0.5L/min; in the step g, the central flow rate is 10kg/s, 8kg/s, 6kg/s and 4kg/s, and the scavenging flow rate is 1.6kg/s, 1.28kg/s, 0.96kg/s and 0.64 kg/s; the temperature of the main air flow in the step f is room temperature; and acquiring test parameters of the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet according to the state points. The method is used for testing the influence of central airflow on the heat dissipation performance.
In one embodiment of the present invention, step g is:
g'. closing the core flow and purge flow of the air intake; in addition, the oil inlet temperature of the step c is 90 ℃, 105 ℃, 120 ℃, 135 ℃ and 150 ℃; d, the inlet flow rate of the step d is 13 +/-0.5L/min; the temperature of the main air flow in the step f is room temperature; and acquiring test parameters of the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet according to the state points. The method is used for testing the natural heat dissipation condition of the host box.
The invention has the beneficial effects that: by applying the test method provided by the invention, the following can be obtained: the air inlet device clears the relation between flow and heat dissipation performance, central flow and heat dissipation performance, the inlet oil temperature and the heat dissipation performance of different lubricating oils, and the natural heat dissipation condition of the lubricating oil tank of the main box. Meanwhile, the casting blank structure of the inner cavity and the oil path of the main engine box of the air inlet device and the manufacturing metallurgical quality can be verified and analyzed to determine whether the pattern requirements are met, whether the oil paths of the inlet and the outlet are smooth and the engine works normally, and the safe and reliable work of the lubricating oil tank and the engine is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a heat dissipation performance testing system of an air intake device according to the present invention.
Detailed Description
The technical solutions provided by the present invention will be described in detail below with reference to the accompanying drawings by way of specific embodiments of the present invention, so as to enable those skilled in the art to more clearly understand the present invention. It should be noted that the technical solutions provided in the following embodiments and the drawings of the specification are only for illustrating the present invention and are not intended to limit the present invention. Wherein like elements, steps will be described with like reference numerals. In the following embodiments and the accompanying drawings, elements and steps which are not directly related to the present invention have been omitted and not shown; and the dimensional relationships between the elements in the drawings are for ease of understanding only and are not intended to be limiting.
The following detailed description of certain embodiments of the present invention is provided to explain the technical solutions provided by the present invention in order for those skilled in the art to more clearly understand the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a heat dissipation performance testing system of an air intake device according to the present invention. The invention provides a test system for testing the heat dissipation performance of an air inlet device of a turboshaft engine, in particular to an integral particle separator. The system comprises: a lubricating oil system, a data acquisition system, a purge flow air system, a core flow air system, a fan unit (not shown), and a test platform.
Wherein, the test platform is used for the installation support of the air inlet device.
The lubricating oil system is used for supplying oil to a lubricating oil tank of the turboshaft engine and regulating the pressure, and comprises an equipment oil tank, a lubricating oil pipeline, an oil pump, a heater, a pressure regulating valve and a bypass valve; the lubricating oil pipeline is divided into an inlet pipeline and an outlet pipeline, the inlet pipeline and the outlet pipeline are respectively connected with an equipment oil tank and a lubricating oil tank of the air inlet device, the inlet pipeline is provided with an oil pump and a heater, the outlet pipeline is provided with a pressure regulating valve, the inlet pipeline is provided with a lubricating oil pipeline branch circuit connected with the equipment oil tank between the heater and the oil pump, and the branch circuit is provided with a bypass valve.
The clear flow air system is used for providing clear flow, and comprises a clear flow pipeline system, a clear flow measuring device, a clear flow regulating device and a clear flow pipeline fan air pumping system; the scavenging flow measuring device, the scavenging flow adjusting device and the scavenging flow pipeline air pumping system are all arranged on the scavenging flow pipeline system and are communicated in sequence, and the scavenging flow measuring device is communicated with the scavenging flow channel of the air inlet device through the scavenging flow pipeline system.
The central flow air system is used for providing stable central flow, and comprises a central flow pipeline system, a central flow measuring device, a central flow adjusting device and a central flow pipeline fan air pumping system; the central flow measuring device, the central flow adjusting device and the central flow pipeline fan air pumping system are all arranged on the central flow pipeline system and are communicated in sequence, and the central flow measuring device is communicated with the air inlet device through the central flow pipeline system.
The data acquisition system is used for monitoring the temperature and pressure of the lubricating oil in the testing process, and comprises a temperature sensor and a pressure sensor which are arranged at an inlet of a lubricating oil pipeline, an outlet of the lubricating oil pipeline, an air inlet and an air outlet of the air inlet device (only one group of outlets of the lubricating oil pipeline is shown in the figure).
In order to match the test system provided by the invention, the invention also provides a test method for testing the heat dissipation performance of the air inlet device of the turboshaft engine, in particular to the integral particle separator, by applying the test system. The method mainly comprises the following steps:
a. arranging an air inlet device in the heat dispersion test system of the air inlet device;
b. starting a lubricating oil system of the heat radiation performance test system of the air inlet device;
c. adjusting the oil inlet temperature of the lubricating oil to a corresponding temperature according to a test scheme;
d. regulating the flow of the lubricating oil inlet to the corresponding flow according to the test scheme;
e. starting a fan unit of the heat dissipation performance test system of the air inlet device;
f. adjusting the main airflow flow of the air inlet device to a stable state, and adjusting the temperature;
g. adjusting the opening of a valve of the scavenging flow pipeline according to the test scheme to enable the scavenging flow and the central flow to be in corresponding states;
h. and (5) stabilizing for a period of time in a corresponding state, and collecting test parameters of the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet.
By the method, corresponding test conditions are adjusted, and corresponding test parameters for representing the heat dissipation performance of the air inlet device can be obtained. Several specific examples are given below for illustration:
the first embodiment is as follows: relationship between medium flow rate and heat dissipation performance:
the relationship between different scavenging flow rates and different lubricating oil flow rates and heat dissipation performance is studied. In this test, the following conditions were maintained:
in the step c, the oil inlet temperature of the lubricating oil of the main box is 90 ℃;
the air inlet temperature in the step f is room temperature;
step g the central stream flow was 10 kg/s.
The test condition point requirements are shown in table 1:
TABLE 1
And recording test parameters such as the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet at different state points.
And data representing the relation between the medium flow and the heat dissipation performance can be obtained by analyzing each obtained test parameter.
Example two: relation between oil inlet temperature and heat dissipation performance of lubricating oil
The relation between the oil inlet temperature of different lubricating oils and the heat dissipation performance is researched. The test was carried out under the following conditions:
and c, raising the oil inlet temperature of the lubricating oil to 105 ℃, and repeatedly testing according to the test state points in the table 1.
And c, raising the oil inlet temperature of the lubricating oil to 120 ℃, and repeatedly testing according to the test state points in the table 1.
And c, raising the oil inlet temperature of the lubricating oil to 135 ℃, and repeatedly testing according to the test state points in the table 1.
According to the test method in the first embodiment (data conditions in table 1), the test parameters such as the temperature and pressure of the oil inlet and outlet, and the temperature and pressure of the air inlet and outlet at different state points are recorded.
Through analyzing each obtained test parameter, data representing the relation between the lubricating oil inlet temperature and the heat dissipation performance can be obtained.
Example three: influence of core airflow on heat dissipation performance:
the influence of central airflow on the heat dissipation performance is researched, and the test is carried out according to the following conditions:
the oil inlet temperature of the lubricating oil in the step c is 130 ℃;
the air inlet temperature in the step f is room temperature;
the test was carried out in the conditions shown in Table 2:
TABLE 2
And recording test parameters such as the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet at different state points in the test.
And the data representing the influence of the central airflow on the heat dissipation performance can be obtained by analyzing the obtained various test parameters.
Example four: natural heat dissipation of the main case
Knowing the natural heat dissipation condition of the main casing, testing according to the following conditions:
the air inlet temperature in the step f is room temperature;
step g is as follows: g'. closing the core flow and purge flow of the air intake;
the test was performed according to the data conditions in table 3:
TABLE 3
And recording test parameters such as the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet at different state points.
And the data representing the natural heat dissipation condition of the main case can be obtained by analyzing the obtained various test parameters.
Through the description of the above embodiments, those skilled in the art can understand that the beneficial effects of the present invention are: by applying the test method provided by the invention, the following can be obtained: the air inlet device clears the relation between flow and heat dissipation performance, central flow and heat dissipation performance, the inlet oil temperature and the heat dissipation performance of different lubricating oils, and the natural heat dissipation condition of the lubricating oil tank of the main box. Meanwhile, the casting blank structure of the inner cavity and the oil path of the main engine box of the air inlet device and the manufacturing metallurgical quality can be verified and analyzed to determine whether the pattern requirements are met, whether the oil paths of the inlet and the outlet are smooth and the engine works normally, and the safe and reliable work of the lubricating oil tank and the engine is ensured.
In the above embodiments of the method for testing heat dissipation performance of an air intake device according to the present invention, it is believed that those skilled in the art can understand the technical solutions and the operating principles of the present invention through the description of the embodiments. However, the above is only a preferred embodiment of the present invention and does not limit the present invention. The technical solution provided by the present invention can be modified appropriately according to the actual needs by those skilled in the art, and modifications and equivalent changes can be made without departing from the scope of the present invention as claimed. The scope of the invention is to be determined by the following claims.
Claims (5)
1. A test method for testing the heat dissipation performance of an air inlet device of a turboshaft engine applies an air inlet device heat dissipation performance test system, wherein the test system comprises an oil lubricating system, a data acquisition system, a flow clearing air system, a central flow air system, a fan set and a test platform; the lubricating oil system is used for supplying oil and adjusting pressure of a lubricating oil tank of the turboshaft engine, the data acquisition system is used for monitoring the temperature and the pressure of the lubricating oil in the test process, the scavenging flow air system is used for providing scavenging flow, the central flow air system is used for providing stable central flow, and the test platform is used for mounting and supporting the air inlet device; the lubricating oil system is connected with a lubricating oil tank of the air inlet device through a lubricating oil pipeline; the data acquisition system is connected with the lubricating oil system and the air inlet device; the purge flow air system and the core flow air system are respectively connected with a purge flow channel and a core flow channel of the air inlet device, and the test method comprises the following steps:
a. arranging the air inlet device in a heat radiation performance test system of the air inlet device;
b. starting a lubricating oil system of the heat radiation performance test system of the air inlet device;
c. adjusting the oil inlet temperature of the lubricating oil to a corresponding temperature according to a test scheme;
d. regulating the flow of the lubricating oil inlet to the corresponding flow according to the test scheme;
e. starting a fan unit of the heat dissipation performance test system of the air inlet device;
f. adjusting the main airflow flow of the air inlet device to a stable state, and adjusting the temperature;
g. adjusting the opening of a valve of the scavenging flow pipeline according to the test scheme to enable the scavenging flow and the central flow to be in corresponding states;
h. stabilizing for a period of time in a corresponding state, and collecting test parameters of temperature and pressure of an inlet and an outlet of the lubricating oil and temperature and pressure of an inlet and an outlet of air;
and c, the oil inlet temperature of the lubricating oil in the step c, the oil inlet flow in the step d, the air inlet temperature in the step f, the clearing flow in the step g and the central flow jointly form a test state point.
2. The test method of claim 1, wherein the oil-feed temperature of step c is 90 ℃; the inlet flow of the step d is 10L/min, 13L/min and 15L/min; in the step g, the central flow is 10kg/s, and the scavenging flow is 1.2kg/s, 1.4kg/s, 1.6kg/s, 1.8kg/s and 2 kg/s; the temperature of the main air flow in the step f is room temperature; and testing at a test state point formed by combining the selected single parameters in the steps, and collecting test parameters of the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet in each test state.
3. The test method of claim 1, wherein the oil feed temperature of step c is 105 ℃, 120 ℃, 135 ℃; the inlet flow of the step d is 10L/min, 13L/min and 15L/min; in the step g, the central flow is 10kg/s, and the scavenging flow is 1.2kg/s, 1.4kg/s, 1.6kg/s, 1.8kg/s and 2 kg/s; the temperature of the main air flow in the step f is room temperature; and collecting test parameters of the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet according to the test state points.
4. The test method of claim 1, wherein the oil-feed temperature of step c is 130 ℃; d, the inlet flow rate of the step d is 13 +/-0.5L/min; in the step g, the central flow rate is 10kg/s, 8kg/s, 6kg/s and 4kg/s, and the scavenging flow rate is 1.6kg/s, 1.28kg/s, 0.96kg/s and 0.64 kg/s; the temperature of the main air flow in the step f is room temperature; and testing at a test state point formed by combining the selected single parameters in the steps, and collecting test parameters of the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet in each test state.
5. The test method of claim 1, wherein step g is:
g'. closing the core flow and purge flow of the air intake;
the oil inlet temperature of the step c is 90 ℃, 105 ℃, 120 ℃, 135 ℃ and 150 ℃; d, the inlet flow rate of the step d is 13 +/-0.5L/min; the temperature of the main air flow in the step f is room temperature; and testing at a test state point formed by combining the selected single parameters in the steps, and collecting test parameters of the temperature and the pressure of the lubricating oil inlet and outlet and the temperature and the pressure of the air inlet and outlet in each test state.
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| CN110108459A (en) * | 2019-05-09 | 2019-08-09 | 中国航发湖南动力机械研究所 | A kind of sand dust separative efficiency test method for particle separator |
| CN110516348A (en) * | 2019-08-25 | 2019-11-29 | 西北工业大学 | A method and device for measuring and calculating the performance of an annular radiator |
| CN111559516B (en) * | 2020-05-25 | 2022-03-25 | 中国航发湖南动力机械研究所 | Waste heat recycling system and method |
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| CN202057812U (en) * | 2011-07-26 | 2011-11-30 | 北京丰荣航空科技有限公司 | Lubricating oil radiator experimental bench |
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| CN105675322A (en) * | 2016-01-13 | 2016-06-15 | 中国航空动力机械研究所 | Lubricating oil tank performance test system and method |
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| US4282016A (en) * | 1979-02-01 | 1981-08-04 | Technical Development Co. | Gas and failure particle separator system |
| CN202057812U (en) * | 2011-07-26 | 2011-11-30 | 北京丰荣航空科技有限公司 | Lubricating oil radiator experimental bench |
| CN103234730A (en) * | 2013-05-20 | 2013-08-07 | 中国航空动力机械研究所 | Pneumatic performance testing method as well as pneumatic performance testing device |
| CN105675322A (en) * | 2016-01-13 | 2016-06-15 | 中国航空动力机械研究所 | Lubricating oil tank performance test system and method |
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