A fuel consumption pipeline system for engine fuel consumption simulation test

Abstract

The utility model belongs to the technical field of aircraft fuel tank test piece, and relates to a fuel consumption pipeline system for engine fuel consumption simulation test, including the fuel tank, the fuel tank export connects a plurality of parallel fuel consumption test pipeline, wherein, fuel consumption test pipeline includes oil pipe, oil pipe oil inlet is connected with the fuel tank oil outlet, sets up the oil pump on the oil pipe, sets up the first ball valve between the oil pump and fuel tank, the oil pump is connected with the butterfly valve through the oil pipe, the butterfly valve is connected with the automatic governing valve through the oil pipe, the automatic governing valve is connected with the second ball valve through the oil pipe, the butterfly valve import and export oil pipe are provided with first flowmeter and second flowmeter respectively, the both ends of automatic governing valve are provided with manual governing valve in parallel, the automatic governing valve is connected with pressure gauge, pressure sensor through the oil pipe, pressure gauge and pressure sensor are connected with the fuel tank simulation test piece through the oil pipe.

Description

Technical Field

[0001] This utility model belongs to the technical field of aircraft fuel tank test components, and relates to a fuel consumption pipeline system for simulating engine fuel consumption testing. Background Technology

[0002] Pipeline test system design is the process of modifying an aircraft fuel system to a certain extent and then transferring it to the outside of a fuel tank simulation test piece. Its design principle is to simulate the various performance elements of the aircraft system to the greatest extent possible while meeting the necessary testing and modification requirements of the aircraft fuel system.

[0003] In existing technologies, the design of pipeline testing systems mainly relies on the simplified transplantation of fuel pipelines, connecting fuel supply devices and fuel-consuming equipment through fixed pipelines, and using conventional valves and flow meters to achieve basic flow regulation. Furthermore, the system typically uses a single regulating valve to control flow, relying on an automatic control system for pressure monitoring and fault response.

[0004] Disadvantages of existing technology: 1. Insufficient fuel recovery capacity: The existing test system does not integrate a fuel recycling mechanism. After the test, the aviation fuel is directly discharged from the fuel tank simulation test piece into the environment or stored in a temporary container, which leads to fuel waste and environmental pollution risks, and cannot meet the fuel supply requirements for long-term continuous tests. 2. Defects in the response and redundancy design of control valves: Traditional control valves have a large dead zone, typically >2%, and excessively long fully open / fully closed times, typically >10 seconds, making it difficult to meet the requirements of high-precision flow control. In addition, the system relies too heavily on automatic control valves, lacking manual emergency adjustment methods in case of their failure or test system malfunction, which can easily lead to test interruptions or data deviations. 3. Weak flow control and fault isolation capabilities: In the existing technology, the flow measurement and regulation functions are poorly coupled, the dynamic response is lagging, and there are no quick shut-off devices such as ball valves in the pipeline. In case of failure, the oil circuit cannot be isolated in time, which poses a risk of fuel leakage or system damage. 4. Insufficient reliability of pressure monitoring: Traditional solutions often use a single pressure gauge to monitor pipeline pressure, lacking real-time digital sensing and redundant monitoring, making it difficult to accurately capture transient pressure fluctuations, which affects the integrity of test data and system safety. Utility Model Content

[0005] The purpose of this invention is to address the problems in the prior art by proposing a fuel consumption pipeline system for simulating engine fuel consumption testing.

[0006] Technical solution A fuel consumption pipeline system for simulating engine fuel consumption testing includes a fuel tank, the outlet of which is connected to multiple parallel fuel consumption testing pipelines. The fuel consumption test pipeline includes an oil pipe, with the oil inlet connected to the oil outlet of the oil tank. An oil pump is installed on the oil pipe, and a first ball valve is installed between the oil pump and the oil tank. The oil pump is connected to a butterfly valve through the oil pipe, and the butterfly valve is connected to an automatic regulating valve through the oil pipe. The automatic regulating valve is connected to a second ball valve through the oil pipe. A first flow meter and a second flow meter are respectively installed on the inlet and outlet oil pipes of the butterfly valve; A manual regulating valve is connected in parallel at both ends of the automatic regulating valve; The automatic regulating valve is connected to the pressure gauge and pressure sensor via an oil pipe; The pressure gauge and pressure sensor are connected to the oil tank simulation test piece via oil pipes.

[0007] Furthermore, an observation window is provided on the fuel tank.

[0008] Furthermore, it also includes a control system, with the pressure sensor electrically connected to the controller. The pressure sensor collects pipeline pressure data in real time and uploads it to the control system.

[0009] Furthermore, the control system is electrically connected to the first ball valve, the second ball valve, and the oil pump, respectively.

[0010] Furthermore, the control system is also electrically connected to the first flow meter, the second flow meter, and the automatic regulating valve, respectively.

[0011] Furthermore, the automatic regulating valve is a high-response valve with a dead zone of less than 1% and a full-open / full-close time of ≤6s.

[0012] Furthermore, the thickness of the oil pipe is 5mm.

[0013] Beneficial effects: Compared with the prior art, this utility model has the following advantages: 1. Achieve efficient fuel recycling, reducing testing costs and environmental risks: This invention controls the oil pump to reverse through a control system, extracting aviation fuel from the simulated test specimen in the fuel tank in real time and sending it back to the fuel tank. The fuel in the fuel tank is then transported back to the fuel supply device, such as an oil depot, through an oil pipe or by means of a delivery. This avoids the waste caused by direct discharge or temporary storage of fuel after traditional tests, significantly reduces the amount of fuel used in tests, lowers fuel procurement costs, and eliminates the risk of fuel leakage polluting the environment, thus meeting the requirements of green testing. 2. High-precision flow control and redundant safety assurance: This utility model's automatic regulating valve adopts a high-response valve with a dead zone of less than 1% and a full-open / full-close time of ≤6s, which significantly improves the flow regulation accuracy and dynamic performance, meeting the refined testing requirements under complex working conditions. At the same time, by setting a dual-redundant control mode of "automatic regulating valve + manual regulating valve", it can seamlessly switch to manual regulation when the automatic control system fails, avoiding test interruption and ensuring the continuity of the test process and the reliability of data. 3. Dynamic flow control and rapid fault isolation By integrating high-precision flow meters and regulating valves for coordinated control, real-time measurement and closed-loop feedback regulation of flow rate are achieved, solving the problem of flow control lag in traditional technology. In addition, by adding quick-shut-off first and second ball valves at key pipeline nodes, the oil circuit can be quickly shut off in case of automatic regulating valve failure, pipeline leakage or test abnormality, minimizing fuel loss and system damage risk. 4. Multi-dimensional stress monitoring and anomaly early warning capabilities: This invention employs a pressure sensor monitoring scheme to collect pipeline pressure data in real time and upload it to the control system. It supports pressure threshold alarm function and can automatically trigger safety mechanisms, such as closing valves or shutting down, when the pressure exceeds the limit, effectively preventing equipment failure caused by abnormal pressure and improving test safety. Attached Figure Description

[0014] Figure 1 A structural diagram of a fuel consumption pipeline system for simulating engine fuel consumption testing provided by this utility model; In the diagram: 1-oil tank, 2-observation window, 3-oil pipe, 4-oil pump, 5-ball valve, 6-butterfly valve, 7-flow meter, 8-automatic regulating valve, 9-pressure gauge, 10-pressure sensor, 11-manual regulating valve. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and apparatus without departing from the spirit of this utility model. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring this utility model.

[0017] In the description of this utility model, it should be noted that the directions or positional relationships indicated by terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They should not be construed as limiting this utility model. In addition, the use of ordinal numbers (e.g., "first and second," etc.) is for distinguishing objects and is not limited to this order, and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly, encompassing both direct connection and indirect connection via an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0019] It should be noted that, where there is no conflict, the embodiments of this utility model and the features therein can be combined with each other, and the various embodiments can be referenced and cited in turn. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0021] like Figure 1 This utility model proposes a fuel consumption pipeline system for simulating engine fuel consumption testing, including a fuel tank 1, the outlet of which is connected to multiple parallel fuel consumption testing pipelines. The fuel consumption test pipeline includes an oil pipe 3, the oil inlet of the oil pipe 3 is connected to the oil outlet of the oil tank 1, an oil pump 4 is installed on the oil pipe 3, a first ball valve is installed between the oil pump 4 and the oil tank 1, the oil pump 4 is connected to the butterfly valve 6 through the oil pipe 3, the butterfly valve 6 is connected to the automatic regulating valve 8 through the oil pipe 3, and the automatic regulating valve 8 is connected to the second ball valve through the oil pipe 3. A first flow meter and a second flow meter are respectively installed on the inlet and outlet oil pipes 3 of butterfly valve 6; The automatic regulating valve 8 is connected in parallel with the manual regulating valve 11 at both ends; The automatic regulating valve 7 is connected to the pressure gauge 9 and the pressure sensor 10 via the oil pipe 3; Pressure gauge 9 and pressure sensor 10 are connected to the oil tank simulation test piece via oil pipe 3.

[0022] An observation window 2 is installed on fuel tank 1.

[0023] Among them, fuel tank 1: as the core unit for fuel storage and supply, it adopts a 304 stainless steel shell to enhance corrosion resistance, which can resist the erosion of media such as acids, alkalis and salts, ensure the purity and long-term stability of fuel, and adapt to complex industrial environments. Observation window 2: Located on the top of fuel tank 1, it provides a visual fuel level monitoring window, which facilitates real-time observation of the fuel level and flow status inside fuel tank 1, and helps to quickly determine abnormal fuel level or system failure; by directly observing the fuel level and flow status from the top, it avoids the viewing angle deviation or blind spot caused by side installation, ensuring intuitive fuel level monitoring; at the same time, it simplifies the sealing structure design and reduces the safety risks caused by leakage from observation window 2.

[0024] Oil pipe 3: Made of 304 stainless steel, it combines high strength and corrosion resistance to ensure the safety and durability of the fuel delivery pipeline and avoid the risk of leakage due to corrosion or mechanical stress. Oil pump 4: Provides a stable power source for the system, drives fuel from tank 1 to the test pipeline, or drives fuel from the tank simulation test piece back to tank 1 after the test. Oil pump 4 supports a multi-oil-pipe parallel design to improve fuel supply redundancy and flow regulation flexibility. The fuel tank 1 is connected to multiple fuel lines 3, and each fuel line 3 is connected to a fuel pump 4. The parallel design of multiple fuel lines 3 enables independent fuel supply through multiple channels, improving system redundancy and flow distribution flexibility. If a single fuel pump 4 fails, the other fuel pumps 4 can still maintain system operation, ensuring the continuity of the test.

[0025] The first and second ball valves control the oil circuit connection status through rapid on / off switching, realizing the opening and closing of fuel delivery between fuel tank 1 and fuel pump 4, as well as fuel delivery between fuel pump 4 and the fuel tank simulation test piece. They offer short response time and excellent sealing performance, reducing the risk of misoperation. This invention utilizes the rapid opening and closing characteristics of ball valve 5 to precisely isolate the fuel passage between fuel tank 1 and fuel pump 4, and between fuel pump 4 and the fuel tank simulation test piece, preventing fuel backflow in case of misoperation or malfunction, while also reducing pressure fluctuations caused by valve switching.

[0026] Butterfly valve 6: Works in conjunction with flow meter 7. By adjusting the opening of the valve plate of butterfly valve 6, the flow rate in the pipeline can be coarsely adjusted. Flow meters 7 are installed at both ends of butterfly valve 6 to monitor the input and output flow rates simultaneously, thereby improving the adjustment accuracy and data comparison reliability. Flow meter 7: measures the fuel flow rate in the pipeline in real time, and forms a closed-loop control with the automatic / manual regulating valve to ensure that the flow error is ≤±0.5%, meeting the high-precision requirements of engine fuel consumption simulation; a flow meter 7 is set at the left and right ends of the butterfly valve 6 respectively; by symmetrically monitoring the inlet and outlet flow of the butterfly valve 6 through the dual flow meters 7, the flow data is compared in real time to verify the valve adjustment accuracy, identify pipeline blockage or leakage abnormalities, and ensure dynamic balance of flow control.

[0027] Automatic regulating valve 8: It adopts a high-performance valve with a dead zone of <1% and a response time of ≤6s to achieve dynamic and precise flow regulation, support automated control logic, and reduce human intervention errors; Pressure gauge 9: Provides a mechanical pressure display, intuitively reflects changes in pipeline pressure, and serves as a redundant monitoring method for pressure sensor 10, enhancing system safety and fault diagnosis capabilities; Pressure sensor 10: Converts pipeline pressure into an electrical signal and uploads it to the control system to realize real-time alarm and automatic protection triggering for abnormal pressure; Manual regulating valve 11: Designed in parallel with automatic regulating valve 8, it switches to manual mode when automatic control fails, maintaining flow regulation function through manual intervention, ensuring test continuity and system fault tolerance; the automatic regulating valve 8 and manual regulating valve 11 are connected in parallel to form an automatic + manual dual redundant regulation channel. When the automatic regulating valve 8 fails, the manual regulating valve 11 can seamlessly take over flow control to avoid test interruption; at the same time, it allows for manual intervention in fine-tuning operations under complex working conditions.

[0028] The thickness of the oil pipe is 5mm.

[0029] The operating principle and operation procedure of the fuel consumption pipeline system for engine fuel consumption simulation testing proposed in this utility model are as follows: 1. Fuel cycle and power supply: Start the oil pump 4 to pump the aviation kerosene in the oil tank 1 into the test pipeline through the oil pipe 3. The fuel flows through the first ball valve 5 (normally open) and enters the butterfly valve 6. The initial flow rate is controlled by adjusting the opening of the butterfly valve 6. 2. Dynamic flow regulation and redundancy control: In automatic mode, flow meter 7 detects fuel flow rate in real time and feeds back the fuel speed signal to the control system. The control system adjusts the opening of automatic regulating valve 8 according to the fuel speed signal. The flow rate is dynamically adjusted by the valve with dead zone <1% and response time ≤6s to ensure consistency with the engine fuel consumption simulation curve. If the automatic regulating valve 8 malfunctions or the system malfunctions, switch manually to the manual regulating valve 11 and manually adjust the flow rate to maintain the continuity of the test.

[0030] 3. Butterfly valve and flow monitoring in synergy: The flow meters 7 on both sides of the butterfly valve 6 synchronously collect inlet and outlet flow data and transmit them to the control system. The control system calculates the flow regulation error of the butterfly valve 6 (accuracy ≤ ±0.5%) by using the flow of the two flow meters and the difference. If the difference exceeds the limit, an alarm is triggered to indicate pipeline blockage or leakage.

[0031] 4. Pressure safety monitoring: Pressure sensor 10 collects pipeline pressure data in real time and uploads it to the control system. Pressure gauge 9 displays the mechanical pressure value synchronously. When the pressure exceeds the set threshold, such as 5MPa, the system automatically shuts off ball valve 5 or oil pump 4 to prevent overpressure damage to the equipment.

[0032] 5. Fuel recovery and liquid level monitoring: After the test, the fuel in the simulated test piece is reversed and transported back to the fuel tank by the oil pump 4, and then further transported back to the fuel supply device to achieve recycling. The operator can directly check the liquid level in the fuel tank 1 through the observation window 2 to ensure that there is no residual fuel in the fuel tank.

[0033] In summary, this utility model proposes a fuel consumption pipeline system for simulating engine fuel consumption testing. It extracts aviation kerosene from the fuel tank simulation test piece and returns it to the fuel depot of the fuel supply device. A regulating valve is configured with a dead zone of less than 1% and a fully open to fully closed time of no more than 6 seconds. In case of automatic regulating valve failure or test control system failure, the fuel flow rate can be adjusted manually via the regulating valve. A flow meter measures the flow rate, and the regulating valve adjusts the flow rate. A ball valve is configured to disconnect the fuel transmission in case of failure. A pressure sensor and pressure gauge are installed to monitor the pressure at all times.

[0034] The above detailed embodiments are a description of the present utility model. It should not be considered that the specific embodiments of the present utility model are limited to these descriptions. For those skilled in the art, several simple deductions and substitutions can be made without departing from the concept of the present utility model, and all of these should be considered to fall within the protection scope of the present utility model.

Claims

1. A fuel consumption pipeline system for simulating engine fuel consumption testing, characterized in that, Includes a fuel tank, the fuel tank outlet of which is connected to multiple parallel fuel consumption test pipelines; The fuel consumption test pipeline includes an oil pipe, with the oil inlet connected to the oil outlet of the fuel tank. An oil pump is installed on the oil pipe, and a first ball valve is installed between the oil pump and the fuel tank. The oil pump is connected to a butterfly valve through the oil pipe, and the butterfly valve is connected to an automatic regulating valve through the oil pipe. The automatic regulating valve is connected to a second ball valve through the oil pipe. A first flow meter and a second flow meter are respectively installed on the inlet and outlet oil pipes of the butterfly valve; A manual regulating valve is connected in parallel at both ends of the automatic regulating valve; The automatic regulating valve is connected to the pressure gauge and pressure sensor via an oil pipe; The pressure gauge and pressure sensor are connected to the oil tank simulation test piece via oil pipes.

2. The fuel consumption pipeline system for engine fuel consumption simulation testing according to claim 1, characterized in that, An observation window is provided on the fuel tank.

3. The fuel consumption pipeline system for engine fuel consumption simulation testing according to claim 1, characterized in that, It also includes a control system, with the pressure sensor electrically connected to the controller. The pressure sensor collects pipeline pressure data in real time and uploads it to the control system.

4. The fuel consumption pipeline system for engine fuel consumption simulation testing according to claim 3, characterized in that, The control system is also electrically connected to the first ball valve, the second ball valve, and the oil pump, respectively.

5. The fuel consumption pipeline system for engine fuel consumption simulation testing according to claim 3, characterized in that, The control system is also electrically connected to the first flow meter, the second flow meter, and the automatic regulating valve.

6. The fuel consumption pipeline system for engine fuel consumption simulation testing according to claim 5, characterized in that, The automatic control valve is a high-response valve with a dead zone of less than 1% and a full-open / full-close time of ≤6s.

7. The fuel consumption pipeline system for engine fuel consumption simulation testing according to claim 1, characterized in that, The thickness of the oil pipe is 5mm.

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