CN210123350U - Environment box for accessory burning lubricating oil - Google Patents
Environment box for accessory burning lubricating oil Download PDFInfo
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- CN210123350U CN210123350U CN201921113381.9U CN201921113381U CN210123350U CN 210123350 U CN210123350 U CN 210123350U CN 201921113381 U CN201921113381 U CN 201921113381U CN 210123350 U CN210123350 U CN 210123350U
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Abstract
The application belongs to the technical field of aero-engine tests, and relates to a lubricating oil-fired accessory environment box which is used for providing a simulated environment for a lubricating oil-fired radiator performance test, the environment box comprises a protective gas bottle (1), a gas heater (2) and a vacuum pump (3), inert gas is contained in the protective gas bottle and is connected to the environment box (4) through an inlet pipeline, the vacuum pump (3) is arranged on an outlet pipeline of the environment box (4), the gas heater (2) is arranged on a circulating pipeline, and two ends of the circulating pipeline are connected to the environment box (4); valves are arranged on the inlet pipeline, the outlet pipeline and the circulating pipeline; be connected with circulating fan (5) on the circulating line, the pressure in the environment case is adjusted through vacuum pump and protective gas bottle to this application, adjusts the temperature in the environment case through circulating line and gaseous incubator, and then the true loaded environment of more accurate simulation fuel oil radiator.
Description
Technical Field
The application belongs to the technical field of aero-engine tests, and particularly relates to a lubricating oil accessory burning environment box.
Background
The fuel oil radiator of the aircraft engine is an important part of a lubricating oil system, and mainly has the main function of performing heat exchange on hot lubricating oil which absorbs heat through a bearing, a gear, a seal and other parts by utilizing cold fuel oil to keep the temperature of the lubricating oil within an allowable range, so that the lubricating oil can be recycled. In order to evaluate the heat exchange performance of the real condition of the lubricating oil system, verification through performance tests is needed. Section 4.4.2.2.5.4 of GJB241A-2010 makes clear the environmental test requirements for the fuel oil radiator, and aims to obtain the heat exchange performance of the fuel oil radiator in the real environment, thereby providing a basis for estimating the performance of a fuel oil system and developing the model of an engine.
In order to perform environmental tests, the fuel oil radiator must be in a real environment, and currently, the most common method is to place the fuel oil radiator in an environmental chamber capable of simulating the real environment, and perform simulation by adjusting the temperature and pressure conditions in the environmental chamber. Therefore, the warming capability of the environmental chamber and the temperature simulation method are very critical. The existing test equipment is a simple closed box body, and the environment in a cavity is heated by electric heating wires arranged in shells around the box body until test conditions are met.
The existing environment box is filled with air, more electric heating wires are arranged in the inner wall of the environment box, and when a little fuel oil leaks from the lubricating oil burning radiator, the fire accident is very easy to happen under the high temperature condition. In order to monitor the environment in the environment box, the transparent glass observation window is arranged on the test box, the camera is arranged outside the glass window, and whether the fire catches fire is judged by manually observing the environment state in the glass window. However, it is difficult to find the problem and respond in time by manual observation, especially in the process of life test. Therefore, the conventional test device and the monitoring method have a large safety risk.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the present application provides a fuel oil accessory environment case for a simulation environment of fuel oil radiator performance test is provided, the environment case includes: the gas heating device is arranged on a circulating pipeline, and two ends of the circulating pipeline are connected to the environment box;
valves are arranged on the inlet pipeline, the outlet pipeline and the circulating pipeline;
and the circulating pipeline is connected with a circulating fan.
Preferably, the environmental chamber is provided with a pressure sensor for measuring the air pressure within the environmental chamber.
Preferably, the environmental chamber is provided with a temperature sensor for measuring the temperature of the gas within the environmental chamber.
Preferably, the environmental tank is provided with a safety valve that communicates the environmental tank with the outside.
Preferably, a test pipeline is connected in parallel on a circulating pipeline positioned on the outlet side of the gas heater, a radiator, a gas concentration warning device and an oxygen concentration warning device are arranged on the test pipeline, and the gas concentration warning device and the oxygen concentration warning device are both positioned on the outlet side of the radiator.
Preferably, the radiator comprises a coil radiator.
Preferably, the test line has an inner diameter smaller than that of the circulation line.
Preferably, the valve comprises an electrically operated on-off valve.
According to the environment box, protective gas is adopted to replace air in the box, so that the lubricating oil-burning radiator is in an environment wrapped by the protective gas to replace an original air environment; the original scheme of the electric heating wire is replaced by a circulating heating mode of protective gas in a pipeline system; and a gas concentration alarm device and an oxygen concentration alarm device are arranged to monitor the gas content in the box in real time, so that the original manual observation mode is replaced.
The test method for filling the inert protective gas and circularly heating effectively reduces the possible fire risk of the scheme that the environment box is filled with air and the inner wall of the environment box is internally provided with the electric heating wire. The gas concentration and oxygen concentration warning device can monitor the concentration of oxygen and fuel oil which are possibly leaked in the environment box in real time, and by monitoring two necessary elements of oxygen and fuel oil which are necessary to fire and sending warning signals, field testers can take countermeasures at the first time, so that the harm caused by fire accidents is reduced to the minimum.
Through the proposal, the safe and reliable operation of the environment test of the fuel and oil accessories such as the fuel and oil radiator is ensured, and the environment test data of the fuel and oil radiator provides support for the development of the lubricating oil system of the aircraft engine.
Drawings
FIG. 1 is a schematic view of the present application of a fuel accessory environmental chamber.
The system comprises a protective gas bottle 1, a gas heater 2, a vacuum pump 3, an environment box 4, a circulating fan 5, a radiator 6, a fuel gas concentration warning device 7 and an oxygen concentration warning device 8.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.
The application provides a safe and reliable's environment case, realizes the environment case through the mode of the protective gas among the circulation circuit that heats and heats to set up gas concentration and oxygen concentration alarm device on circulation circuit and monitor.
As shown in fig. 1, the main equipment in the assay system includes: the gas concentration alarm device comprises a protective gas bottle 1, a gas warmer 2, a vacuum pump 3, an environment box 4, a circulating fan 5, a coil radiator 6, a fuel gas concentration alarm device 7, an oxygen concentration alarm device 8, an electric switch valve K1, an electric switch valve K2, an electric switch valve K3, an electric switch valve K4 and the like, wherein a pressure sensor P1, a temperature sensor T1 and a safety valve are arranged on the environment box.
The inside of the protective gas bottle 1 is provided with protective gas, such as inert gas like nitrogen, and is connected to the environment box 4 through an inlet pipeline, the vacuum pump 3 is arranged on an outlet pipeline of the environment box 4, the gas warmer 2 is arranged on a circulating pipeline, and two ends of the circulating pipeline are connected to the environment box 4.
The inlet pipeline, the outlet pipeline and the circulating pipeline are all provided with valves, the inlet pipeline is provided with an electric switch valve K2, the outlet pipeline is provided with an electric switch valve K1, the circulating pipeline is provided with an electric switch valve K3 at the starting end of the pipeline, and the tail end of the circulating pipeline is provided with an electric switch valve K4.
And the circulating pipeline is connected with a circulating fan 5, and the circulating fan 5 is arranged in front of the gas heater 2.
In this application, environment case 4 is provided with and is used for measuring the pressure sensor of environment incasement gas pressure and be used for measuring the temperature sensor of environment incasement gas temperature. Meanwhile, the environment tank 4 is provided with a safety valve that connects the environment tank with the outside.
In this application, be located the circulating line of the outlet side of gas warmer 2 and have parallelly connected the test pipeline, as shown in fig. 1, circulating line is divided into two branches after gas warmer 2, goes up the branch road and is the major loop, and the lower branch road is the test branch road, is provided with radiator 6 on the test branch road for lower the temperature to the gas that awaits measuring to satisfy gas concentration alarm device 7 and oxygen concentration alarm device 8 after that to the bearing capacity of temperature, in this application, the radiator includes the coil pipe radiator.
The test principle and the operation flow are as follows:
1) exhausting air in the environment box, opening a valve K1, starting a vacuum pump, sucking the air in the environment box to a negative pressure state until P1 reaches a required pressure value, and closing the vacuum pump and the valve K1;
2) filling protective gas into the environment box, opening a valve K2, enabling the protective gas in the protective gas bottle to enter the environment box until P1 reaches a required pressure value, and closing a valve K2;
3) and starting circulating heating flow, opening valves K3 and K4, starting a circulating fan, starting a gas heater, heating protective gas in a circulating pipeline until T1 reaches a required temperature value, and stopping the gas heater. The gas heater in the circulating flow is divided into two branches, most of the gas returns to the environment box through the upper branch, and a small amount of the gas flows through the lower branch. The branch road in below contains coil pipe radiator, gas concentration alarm device and oxygen concentration alarm device, and gas concentration alarm device and oxygen concentration alarm device feel respectively through the concentration that contains gas or oxygen in its inside gas, when concentration exceedes the alarm value of settlement, send acousto-optic warning signal, remind manual processing, protective gas is earlier through the heat dissipation of coil pipe radiator, and the temperature reduction is to gas concentration alarm device and oxygen concentration alarm device's tolerance temperature range, then through two alarm device. In addition, if the heating process exceeds the set safe pressure value, a safe valve in the environment box is opened to release pressure, and the valve is automatically closed until the required value is reached.
Compared with the existing test method, the test method for filling the inert shielding gas and circularly heating effectively reduces the possible fire risk of the scheme that the environment box is filled with air and the inner wall of the environment box is internally provided with the electric heating wire. The gas concentration and oxygen concentration warning device can monitor the concentration of oxygen and fuel oil which are possibly leaked in the environment box in real time, and by monitoring two necessary elements of oxygen and fuel oil which are necessary to fire and sending warning signals, field testers can take countermeasures at the first time, so that the harm caused by fire accidents is reduced to the minimum.
Through the proposal, the safe and reliable operation of the environment test of the fuel and oil accessories such as the fuel and oil radiator is ensured, and the environment test data of the fuel and oil radiator provides support for the development of the lubricating oil system of the aircraft engine.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. A fuel accessory environmental chamber for providing a simulated environment for a fuel radiator performance test, the environmental chamber comprising: the device comprises a protective gas bottle (1), a gas heater (2) and a vacuum pump (3), wherein inert gas is arranged in the protective gas bottle and is connected to an environment box (4) through an inlet pipeline, the vacuum pump (3) is arranged on an outlet pipeline of the environment box (4), the gas heater (2) is arranged on a circulating pipeline, and two ends of the circulating pipeline are connected to the environment box (4);
valves are arranged on the inlet pipeline, the outlet pipeline and the circulating pipeline;
and the circulating pipeline is connected with a circulating fan (5).
2. -oil and gas accessory environmental chamber according to claim 1, characterized in that the environmental chamber (4) is provided with a pressure sensor for measuring the air pressure inside the environmental chamber.
3. -oil-fired accessory environmental chamber according to claim 1, characterized in that the environmental chamber (4) is provided with a temperature sensor for measuring the temperature of the gas inside the environmental chamber.
4. -oil-fired accessory environmental tank according to claim 1, characterized in that the environmental tank (4) is provided with a safety valve that puts the environmental tank into communication with the outside.
5. The fuel accessory environment tank as claimed in claim 1, characterized in that a test line is connected in parallel to the circulation line on the outlet side of the gas warmer (2), and a radiator (6), a gas concentration warning device (7) and an oxygen concentration warning device (8) are disposed on the test line, and the gas concentration warning device (7) and the oxygen concentration warning device (8) are disposed on the outlet side of the radiator.
6. The fuel accessory environment tank of claim 1, wherein the radiator comprises a coil radiator.
7. The fuel accessory environment tank of claim 5, wherein the test line has an inner diameter less than an inner diameter of the circulation line.
8. The fuel accessory environment tank of claim 1, wherein the valve comprises an electrically actuated on-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921113381.9U CN210123350U (en) | 2019-07-16 | 2019-07-16 | Environment box for accessory burning lubricating oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921113381.9U CN210123350U (en) | 2019-07-16 | 2019-07-16 | Environment box for accessory burning lubricating oil |
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| Publication Number | Publication Date |
|---|---|
| CN210123350U true CN210123350U (en) | 2020-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921113381.9U Active CN210123350U (en) | 2019-07-16 | 2019-07-16 | Environment box for accessory burning lubricating oil |
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| CN (1) | CN210123350U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636538A (en) * | 2022-04-06 | 2022-06-17 | 苏州东菱振动试验仪器有限公司 | Test box and vibration test system |
-
2019
- 2019-07-16 CN CN201921113381.9U patent/CN210123350U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636538A (en) * | 2022-04-06 | 2022-06-17 | 苏州东菱振动试验仪器有限公司 | Test box and vibration test system |
| CN114636538B (en) * | 2022-04-06 | 2024-03-08 | 苏州东菱振动试验仪器有限公司 | Test box and vibration test system |
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