Fuel oil emergency oil supply mechanism and emergency oil supply method
A fuel supply and fuel technology, which is applied in gas turbine installations, mechanical equipment, engine components, etc., can solve problems that are not conducive to the overall layout of the engine thrust/power-to-weight ratio parameters, and cannot guarantee the normal function of the fuel regulator. The problem of increasing the weight/volume of the machine can achieve the effect of large practical application value, improve work safety and reliability, and reduce the difficulty of development.
Active Publication Date: 2020-11-13
BEIJING HANGKE ENGINE CONTROL SYST SCI & TECH
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- Application Information
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Problems solved by technology
The premise of electrical / mechanical dual redundancy is that the electronic controller works normally. In case of extreme situations such as electronic controller crash and power failure, the electrical / mechanical dual redundancy still cannot guarantee the normal function of the fuel regulator.
Setting up a backup mechanical control mechanism can effectively avoid the above situation, but its structure is very complicated, resulting in a significant increase in the weight / volume of the fuel regulator, which is not conducive to the engine thrust / power-to-weight ratio parameters and the overall layout of accessories
Method used
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[0020] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For simplicity, some technical features known to those skilled in the art are omitted from the following description.
[0021] Please also see figure 1 and figure 2 , the fuel emergency oil supply mechanism of the present invention includes a solenoid valve, an oil circuit switching valve, a metering valve and a constant fuel supply valve, wherein, the oil circuit switching valve is provided with a spool with a smaller middle size, so that the inside of the oil circuit switching valve A low-pressure chamber and an oil passage chamber are formed. The metering valve outputs fuel through the internal oil passage chamber of the oil circuit switching valve to connect with the engine combustion chamber. The solenoid valve controls the conne...
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Abstract
The invention belongs to the fuel oil supply technology, and particularly relates to a fuel oil emergency oil supply mechanism and an emergency oil supply method. The fuel oil emergency supply mechanism comprises an electromagnetic valve, an oil way conversion valve, a metering valve, a minimum pressure parking valve and a constant oil supply valve; a valve element is arranged in the oil way conversion valve, so that a low-pressure cavity and a valve element oil passing cavity are formed in the oil way conversion valve, fuel oil output by the metering valve is in communication with an engine combustion chamber through the oil way conversion valve, the electromagnetic valve controls communication of high-pressure oil and low-pressure oil, an outlet of the constant oil supply valve is in communication with the oil way conversion valve, and the valve element oil passing cavity in the oil way conversion valve is in communication with the engine combustion chamber. The fuel oil emergency oil supply mechanism is ingenious in design and simple in structure, and the working safety and reliability of an engine are effectively improved; and meanwhile, debugging is easy, manufacturability ishigh, implementation is easy, and the large practical application value is achieved.
Description
technical field [0001] The invention belongs to fuel oil supply technology, and in particular relates to a fuel oil emergency oil supply mechanism and an emergency oil supply method. Background technique [0002] For the digital electronic fuel control system, the fuel regulator is its key execution structure, which mainly performs functions such as fuel boosting, fuel metering and fuel shutoff according to the instructions of the electronic controller. In order to improve the working reliability of the fuel regulator, it is common practice to have electrical / mechanical dual redundancy or to set up a backup mechanical control mechanism. The premise of electrical / mechanical dual redundancy is that the electronic controller works normally. In case of extreme situations such as electronic controller crash or power failure, the electrical / mechanical dual redundancy still cannot guarantee the normal function of the fuel regulator. Setting up a backup mechanical control mechanism...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F02C9/46F02C7/22F02C7/232F02C9/26
CPCF02C9/46F02C7/22F02C7/232F02C9/263
Inventor 廖远洋孙健博李旭
Owner BEIJING HANGKE ENGINE CONTROL SYST SCI & TECH