阅读说明：本技术 一种压力调节的比例输油系统及方法 (Pressure-regulated proportional oil delivery system and method ) 是由 施文斌 刘亚莉 潘庆典 芦崇宇 于 2020-12-25 设计创作，主要内容包括：本发明公开了一种压力调节的比例输油系统及方法,系统包括左油箱、右油箱、主油箱、左油泵、右油泵、压力传感器一、压力传感器二、调速装置一、调速装置二和输油管路,左油箱、右油箱通过输油管路与主油箱连通,所述的左油泵设置在左油箱内,右油泵设置在右油箱内,压力传感器一设置在靠近左油箱出口的输油管路上,压力传感器二设置在靠近右油箱出口的输油管路上,压力传感器一、压力传感器二均与调速装置一、调速装置二连接,调速装置一与左油泵连接,调速装置二与右油泵连接,本发明压力调节的比例输油是电子式自动控制的,具有工作稳定可靠精确的优点,针对航空飞机燃油系统比例输油或平衡输油控制的技术问题,简化系统、提高控制精度、降低维修成本,并保证系统工作稳定可靠,而且实施方便,经济效益好。(The invention discloses a pressure-regulated proportional oil conveying system and a method, the system comprises a left oil tank, a right oil tank, a main oil tank, a left oil pump, a right oil pump, a pressure sensor I, a pressure sensor II, a speed regulating device I, a speed regulating device II and an oil conveying pipeline, the left oil tank and the right oil tank are communicated with the main oil tank through the oil conveying pipeline, the left oil pump is arranged in the left oil tank, the right oil pump is arranged in the right oil tank, the pressure sensor I is arranged on the oil conveying pipeline close to the outlet of the left oil tank, the pressure sensor II is arranged on the oil conveying pipeline close to the outlet of the right oil tank, the pressure sensor I and the pressure sensor II are both connected with the speed regulating device I and the speed regulating device II, the speed regulating device I is connected with the left oil pump, and the speed regulating device II is connected with the right oil pump, the pressure-regulated proportional oil conveying, aiming at the technical problem of proportional oil delivery or balanced oil delivery control of an aircraft fuel system, the system is simplified, the control precision is improved, the maintenance cost is reduced, the system is ensured to work stably and reliably, and the system is convenient to implement and has good economic benefit.)

1. A pressure-regulated proportional oil delivery system, characterized in that: including left oil tank, right oil tank, main oil tank, left oil pump, right oil pump, pressure sensor one, pressure sensor two, speed adjusting device one, speed adjusting device two and defeated oil tank way, left oil tank, right oil tank pass through defeated oil tank way and main oil tank intercommunication, left oil pump setting in left oil tank, right oil pump setting in right oil tank, pressure sensor one set up on the defeated oil tank way of being close to the export of left oil tank, pressure sensor two set up on the defeated oil tank way of being close to the export of right oil tank, pressure sensor one, pressure sensor two all be connected with speed adjusting device one, speed adjusting device two, speed adjusting device one and left oil pump connection, speed adjusting device two and right oil pump connection.

2. A pressure regulated proportional oil delivery system as defined in claim 1, wherein: the first speed regulating device comprises a positive input port and a negative input port, the positive input port is connected with the first pressure sensor, and the negative input port is connected with the second pressure sensor.

3. A pressure regulated proportional oil delivery system as defined in claim 1, wherein: the second speed regulating device comprises a positive input port and a negative input port, the positive input port is connected with the second pressure sensor, and the negative input port is connected with the first pressure sensor.

4. A pressure regulated proportional oil delivery system as defined in claim 1, wherein: the first speed regulating device regulates the rotating speed of the left oil pump by regulating the input voltage, current or frequency of the left oil pump, and the second speed regulating device regulates the rotating speed of the right oil pump by regulating the input voltage, current or frequency of the right oil pump.

5. A pressure regulated proportional oil delivery system as defined in claim 1, wherein: the first pressure sensor and the second pressure sensor adopt silicon piezoresistive pressure sensors.

6. A pressure regulated proportional oil delivery system as defined in claim 1, wherein: the first pressure sensor and the second pressure sensor are both connected with the first speed regulating device and the second speed regulating device in a wireless or wired mode.

7. A pressure regulated proportional oil delivery system as defined in claim 1, wherein: and the distance from the first pressure sensor to the outlet of the left oil tank is equal to the distance from the second pressure sensor to the outlet of the right oil tank.

8. A pressure regulated proportional oil delivery system as defined in claim 1, wherein: the main oil tank is arranged at the center of the oil conveying pipeline, so that the distance from the left oil tank to the main oil tank is equal to the distance from the right oil tank to the main oil tank.

9. The method of pressure regulated proportional oil delivery system according to any one of claims 1-8, wherein:

the pressure sensor I and the pressure sensor II respectively output liquid pressure measured values P1 and P2 in corresponding oil pipelines;

p1 is used as an input signal of a positive input port of the speed regulating device, P2 is used as an input signal of a negative input port of the speed regulating device, meanwhile, P1 is used as an input signal of a negative input port of the speed regulating device, and P2 is used as an input signal of a positive input port of the speed regulating device;

when the pressure P1 is equal to the pressure P2, the speed regulating device I and the speed regulating device II do not regulate the speed: the left and right oil pumps maintain the current rotating speed or the given rotating speed of the system, and the left and right oil pumps carry out oil transportation in a balanced manner;

when P1 is greater than P2, the first speed regulating device regulates speed, the rotating speed of the left oil pump is increased, meanwhile, the second speed regulating device regulates speed, the rotating speed of the right oil pump is reduced, oil transportation is balanced about P1 to P2, and the first regulating device and the second regulating device stop regulating speed;

when P2 is greater than P1, the first speed regulating device regulates speed, the rotating speed of the left oil pump is reduced, meanwhile, the second speed regulating device regulates speed, the rotating speed of the right oil pump is increased, oil delivery is balanced about P2 when P1 is equal to P2, and the first regulating device and the second regulating device stop regulating speed.

Technical Field

The invention belongs to the technical field of aviation fuel system oil transportation control, and relates to a pressure-regulated proportional oil transportation system and method.

Background

The left oil pump and the right oil pump realize balanced oil transportation of left and right oil tanks of an airplane, and the method is characterized in that after a power supply is switched on, the oil pumps transport oil at a certain rated rotating speed theoretically, but because the rotating speed of the oil pumps is unstable, such as unstable power supply, resistance change of an oil transportation pipeline, other external interference and the like, the left oil pump and the right oil pump need to be timely regulated in speed, and balanced oil transportation is realized.

At present, the proportional oil delivery control of an aircraft fuel system is mostly mechanical, and electronic automatic control is less and simple. The mechanical proportional oil transportation controller has the advantages of complex structure, lower control precision and inconvenient maintenance, and can not meet the system requirements.

Disclosure of Invention

The purpose of the invention is: the system and the method for proportional oil delivery with pressure regulation are provided, aiming at the technical problem of proportional oil delivery or balanced oil delivery control of an aircraft fuel system, the system is simplified, the control precision is improved, the maintenance cost is reduced, the system is ensured to work stably and reliably, and the system is convenient to implement and has good economic benefit.

The technical scheme of the invention is as follows:

the utility model provides a proportion oil transportation system of pressure adjustment, includes left oil tank, right oil tank, main oil tank, left oil pump, right oil pump, pressure sensor one, pressure sensor two, speed adjusting device one, speed adjusting device two and defeated oil pipe way, left oil tank, right oil tank pass through defeated oil pipe way and main oil tank intercommunication, left oil pump set up in left oil tank, right oil pump sets up in right oil tank, pressure sensor one set up on the defeated oil pipe way of being close to the export of left oil tank, pressure sensor two set up on the defeated oil pipe way of being close to the export of right oil tank, pressure sensor one, pressure sensor two all be connected with speed adjusting device one, speed adjusting device two, speed adjusting device one is connected with left oil pump, speed adjusting device two and right oil pump connection.

Furthermore, the first speed regulating device comprises a positive input port and a negative input port, the positive input port is connected with the first pressure sensor, and the negative input port is connected with the second pressure sensor.

Furthermore, the second speed regulating device comprises a positive input port and a negative input port, the positive input port is connected with the second pressure sensor, and the negative input port is connected with the first pressure sensor.

Further, the first speed regulating device regulates the rotating speed of the left oil pump by regulating the input voltage, current or frequency of the left oil pump, and the second speed regulating device regulates the rotating speed of the right oil pump by regulating the input voltage, current or frequency of the right oil pump.

Furthermore, the first pressure sensor and the second pressure sensor adopt silicon piezoresistive pressure sensors.

Furthermore, the first pressure sensor and the second pressure sensor are both connected with the first speed regulating device and the second speed regulating device in a wireless or wired mode.

Further, the distance from the first pressure sensor to the outlet of the left oil tank is equal to the distance from the second pressure sensor to the outlet of the right oil tank.

Furthermore, the main oil tank is arranged at the center of the oil conveying pipeline, so that the distance from the left oil tank to the main oil tank is equal to the distance from the right oil tank to the main oil tank.

The method of the pressure-regulated proportional oil delivery system comprises the following steps: the pressure sensor I and the pressure sensor II respectively output liquid pressure measured values P1 and P2 in corresponding oil pipelines;

p1 is used as an input signal of a positive input port of the speed regulating device, P2 is used as an input signal of a negative input port of the speed regulating device, meanwhile, P1 is used as an input signal of a negative input port of the speed regulating device, and P2 is used as an input signal of a positive input port of the speed regulating device;

when the pressure P1 is equal to the pressure P2, the speed regulating device I and the speed regulating device II do not regulate the speed: the left and right oil pumps maintain the current rotating speed or the given rotating speed of the system, and the left and right oil pumps carry out oil transportation in a balanced manner;

when P1 is greater than P2, the first speed regulating device regulates speed, the rotating speed of the left oil pump is increased, meanwhile, the second speed regulating device regulates speed, the rotating speed of the right oil pump is reduced, oil transportation is balanced about P1 to P2, and the first regulating device and the second regulating device stop regulating speed;

when P2 is greater than P1, the first speed regulating device regulates speed, the rotating speed of the left oil pump is reduced, meanwhile, the second speed regulating device regulates speed, the rotating speed of the right oil pump is increased, oil delivery is balanced about P2 when P1 is equal to P2, and the first regulating device and the second regulating device stop regulating speed.

The invention has the advantages and beneficial effects that:

the pressure-regulated proportional oil delivery system and the pressure-regulated proportional oil delivery method have the advantages of stable, reliable and accurate operation, and can simplify the system, improve the control precision, reduce the maintenance cost, ensure the stable and reliable operation of the system, be convenient to implement and have good economic benefit aiming at the technical problem of proportional oil delivery or balanced oil delivery control of an aircraft fuel system.

Drawings

Fig. 1 is a schematic diagram of the system operating principle of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention, such as the shapes, configurations, mutual positions and connection relationships of the components, the functions and operating principles of the components, the manufacturing processes and the operation and use methods thereof, will be further described in detail with reference to the accompanying drawings, so as to help those skilled in the art to more completely, accurately and deeply understand the concept and technical solutions of the present invention:

the first embodiment is as follows:

referring to fig. 1, a pressure-regulated proportional oil delivery system comprises a left oil tank, a right oil tank, a main oil tank, a left oil pump, a right oil pump, a first pressure sensor, a second pressure sensor, a first speed regulation device, a second speed regulation device and an oil delivery pipeline, wherein the left oil tank and the right oil tank are communicated with the main oil tank through the oil delivery pipeline, the left oil pump is arranged in the left oil tank, the right oil pump is arranged in the right oil tank, the first pressure sensor is arranged on the oil delivery pipeline close to the outlet of the left oil tank, the second pressure sensor is arranged on the oil delivery pipeline close to the outlet of the right oil tank, the first pressure sensor and the second pressure sensor are both connected with the first speed regulation device and the second speed regulation device, the first speed regulation device is connected with the left oil pump, and the second speed regulation device is connected with.

The first speed regulating device comprises a positive input port and a negative input port, the positive input port is connected with the first pressure sensor, and the negative input port is connected with the second pressure sensor. The second speed regulating device comprises a positive input port and a negative input port, the positive input port is connected with the second pressure sensor, and the negative input port is connected with the first pressure sensor. The first speed regulating device regulates the rotating speed of the left oil pump by regulating the input voltage, current or frequency of the left oil pump, and the second speed regulating device regulates the rotating speed of the right oil pump by regulating the input voltage, current or frequency of the right oil pump.

The first pressure sensor and the second pressure sensor are silicon piezoresistive pressure sensors, the first pressure sensor and the second pressure sensor are both connected with the first speed regulating device and the second speed regulating device in a wireless or wired mode, the distance from the first pressure sensor to the outlet of the left oil tank is equal to the distance from the second pressure sensor to the outlet of the right oil tank, the mounting positions of the first pressure sensor and the second pressure sensor are close to the corresponding left oil pump and the right oil pump as far as possible, the distances of the first pressure sensor and the second pressure sensor are equal, and the left-right symmetry is maintained.

The main oil tank is arranged at the center of the oil conveying pipeline, so that the distance from the left oil tank to the main oil tank is equal to the distance from the right oil tank to the main oil tank, and the oil conveying share of the left oil tank and the right oil tank to the main oil tank in the same time unit is equal to maintain the aim of balancing the gravity center of the airplane. The main oil tank is an oil supply tank of the engine and is also ensured to be in the center of an oil path, namely the system maintains bilateral symmetry.

Example two:

the method of the pressure-regulated proportional oil delivery system comprises the following steps: the pressure sensor I and the pressure sensor II respectively output liquid pressure measured values P1 and P2 in corresponding oil pipelines;

p1 is used as an input signal of a positive input port of the speed regulating device, P2 is used as an input signal of a negative input port of the speed regulating device, meanwhile, P1 is used as an input signal of a negative input port of the speed regulating device, and P2 is used as an input signal of a positive input port of the speed regulating device;

when the pressure P1 is equal to the pressure P2, the speed regulating device I and the speed regulating device II do not regulate the speed: the left and right oil pumps maintain the current rotating speed or the given rotating speed of the system, and the left and right oil pumps carry out oil transportation in a balanced manner;

when P1 is greater than P2, the first speed regulating device regulates speed, the rotating speed of the left oil pump is increased, meanwhile, the second speed regulating device regulates speed, the rotating speed of the right oil pump is reduced, oil transportation is balanced about P1 to P2, and the first regulating device and the second regulating device stop regulating speed;

when P2 is greater than P1, the first speed regulating device regulates speed, the rotating speed of the left oil pump is reduced, meanwhile, the second speed regulating device regulates speed, the rotating speed of the right oil pump is increased, oil delivery is balanced about P2 when P1 is equal to P2, and the first regulating device and the second regulating device stop regulating speed.

In addition, the first speed regulating device and the second speed regulating device can be specially arranged, and the system can also carry out oil transportation control according to a certain proportion, such as 1.1: 1. 1.2: 1. 1.25: 1.… …, and the like.

Example three:

a pressure-regulated proportional oil delivery system comprises a left oil tank, a right oil tank, a main oil tank, a left oil pump, a right oil pump, a first pressure sensor, a second pressure sensor, a first speed regulating device, a second speed regulating device and an oil delivery pipeline.

The system requires that the left oil tank and the right oil tank simultaneously transfer oil to the main oil tank, and the oil transfer speeds are equal, so that the oil tanks can transfer oil in a balanced manner, and the balance of the airplane is maintained. The system is additionally provided with 2 pressure sensors and 2 oil pump speed regulating devices for regulating the oil delivery speed of the left oil tank and the right oil tank to the main oil tank to be equal.

The pressure sensor I and the pressure sensor II respectively output liquid pressure measured values P1 and P2 in corresponding oil pipelines;

p1 and P2 are respectively used as the signal input + and the signal input-of the speed regulating device 1;

p1 and P2 are used as signal input-and input + of the speed regulating device 2 respectively;

when the pressure of P1 is equal to that of P2, the speed regulating device does not regulate the speed: the left pump and the right pump maintain the current rotating speed or the given rotating speed of the system, and oil transportation is balanced left and right;

when P1 is more than P2, the speed regulating device regulates the speed: increasing the left pump speed and reducing the right pump speed until the P1 is equal to P2, and carrying out balanced oil transportation;

when P2 is more than P1, the speed regulating device regulates the speed: the left pump speed is reduced, the right pump speed is increased, and oil delivery is balanced until P1 is equal to P2.

The pressure sensor 1 and the pressure sensor 2 output measured values of the liquid pressure P1 and P2 in the corresponding oil delivery pipelines, respectively.

The adjusting method is innovated according to the Bernoulli effect principle;

the bernoulli effect, also known as boundary layer surface effect. It is essentially the conservation of mechanical energy of a fluid, as shown by the following equation:

where p is the pressure (Pa) at a point in the fluid; ρ is the fluid density (kg/m 3); v is the flow velocity (m/s) of the fluid at that point; g is the acceleration of gravity (m/s 2); h is the height (m) of the point; c is a constant.

The method is applicable to all fluids including gas, is one of basic phenomena when the fluids stably flow, and reflects the relationship between the pressure and the flow rate of the fluids, and the relationship between the flow rate and the pressure: when the flow velocity is equal to the equal flow velocity, the larger the flow velocity of the fluid is, the smaller the pressure intensity is; the smaller the flow rate of the fluid, the greater the pressure.

Correspondingly, according to the pressure measurement value, the speed of the side with small flow needs to be regulated by the speed regulating device, the rotating speed of the pump is increased, and the flow is increased; the side with large flow rate needs to be regulated by a speed regulating device, the rotating speed of the pump is reduced, and the flow rate is reduced.

The input of the first speed regulating device and the second speed regulating device is the liquid pressure measured values P1 and P2 of the first pressure sensor and the second pressure sensor, and the two input ends are respectively connected with the positive input end and the negative input end of the first speed regulating device and the second speed regulating device. The input value of the + end is equal to the input value of the-end, and speed regulation is not needed. When the input value of the + end is larger than that of the-end, the speed regulating device regulates the speed, the rotating speed of the corresponding pump is increased, and the flow is increased; when the input value of the + end is smaller than that of the-end, the speed regulating device regulates the speed, the rotating speed of the corresponding pump is reduced, and the flow is reduced.

The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.