Fuel flow and temperature control metering system

Abstract

The invention relates to a fuel oil flow and temperature control metering system which comprises a fuel oil assembly, a flow adjusting assembly, a temperature adjusting assembly and a control assembly, the fuel oil assembly comprises a fuel oil tank and a weighing device installed at the bottom of the fuel oil tank, the fuel oil tank is provided with an oil supply pipeline, and the flow adjusting assembly comprises a flow adjusting end installed on the oil supply pipeline. The temperature adjusting assembly comprises a temperature adjusting end installed on the oil supply pipeline, the control assembly comprises a feedback module, a flow control module and a temperature control module, and the feedback module is installed at the output end of the oil supply pipeline; the weight change rate of the fuel tank can be controlled by controlling the flow adjusting assembly, meanwhile, the flow information of the output end of the fuel supply pipeline can be known through the feedback module, the flow adjusting assembly is further finely adjusted, and the fuel flow output by the fuel supply pipeline is stably and accurately controlled; and the feedback module can also feed back temperature information of the fuel oil at the output end of the oil supply pipeline, so that the temperature of the output fuel oil can be accurately adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of fuel metering on an engine bench, and in particular to a fuel flow temperature control metering system. Background Art

[0002] The stability and accuracy of the fuel control metering system have a great impact on the test results of the engine bench, and the metering accuracy is directly related to the test capability of the engine bench. Currently, there are many ways to measure and adjust fuel flow, and most systems use liquid flow meters for measurement.

[0003] However, when the fuel flow rate of the engine bench is small, the flow signal is weak, so that the measured data deviates greatly from the actual data, making it difficult to accurately control the fuel flow rate and temperature, affecting the stability and accuracy of the engine bench test results. Summary of the invention

[0004] In view of this, it is necessary to provide a fuel flow temperature control metering system to solve the problem that when the fuel flow of the engine test bench is small, the flow signal is weak and the existing system is difficult to accurately control and meter the fuel flow and temperature.

[0005] The present invention provides a fuel flow temperature control metering system, comprising a fuel component, a flow regulating component, a temperature regulating component and a control component, wherein the fuel component comprises a fuel tank and a weighing device installed at the bottom of the fuel tank, the fuel tank has a fuel supply pipeline, the fuel inlet end of the fuel supply pipeline is connected to the fuel tank, the flow regulating component comprises a flow regulating end installed on the fuel supply pipeline, and is used to regulate the flow of the fuel in the fuel supply pipeline, the temperature regulating component comprises a temperature regulating end installed on the fuel supply pipeline, and is used to regulate the temperature of the fuel in the fuel supply pipeline, and the control component comprises a feedback module. block, a flow control module and a temperature control module, the feedback module is installed at the output end of the oil supply pipeline, and is used to detect the flow and temperature of the fuel in the oil supply pipeline, the feedback module and the weighing device are electrically connected to the flow regulating end via the flow control module, the flow control module controls the action of the flow regulating end according to the flow information of the output end of the oil supply pipeline and the fuel change value in the fuel tank, the feedback module is electrically connected to the temperature regulating end via the temperature control module, and the temperature control module controls the action of the temperature regulating end according to the temperature information of the output end of the oil supply pipeline.

[0006] Furthermore, the flow regulating assembly includes a first oil pump installed on the oil supply pipeline, and the first oil pump is electrically connected to the flow control module.

[0007] Furthermore, the fuel tank has an oil return pipeline, the oil outlet end of the oil return pipeline is connected to the fuel tank, and the flow regulating component also includes a pressure regulating valve installed on the oil return pipeline.

[0008] Furthermore, the fuel tank has an oil replenishing pipeline, the oil outlet end of the oil replenishing pipeline is connected to the fuel tank, the flow regulating assembly also includes an oil replenishing part installed on the oil replenishing pipeline, the oil replenishing part is electrically connected to the flow control module, and the flow control module is used to adjust the oil replenishing flow of the oil replenishing part.

[0009] Furthermore, the oil replenishing component includes an oil replenishing tank, a second oil pump and a control valve which are arranged in sequence on the oil replenishing pipeline along the direction flowing toward the fuel tank. The second oil pump and the control valve are both electrically connected to the flow control module, and the flow control module is used to adjust the power of the second oil pump and the opening degree of the control valve.

[0010] Furthermore, the temperature adjustment component includes a water tank, a water pump and a first heat exchanger installed on the oil supply pipeline. The water outlet of the water tank is connected to the water inlet of the first heat exchanger via the water pump, and the water outlet of the first heat exchanger is connected to the water inlet of the water tank. The water pump is electrically connected to the temperature control module, and the temperature control module is used to adjust the power of the water pump.

[0011] Furthermore, the fuel tank has an oil return pipeline, and the temperature regulating assembly also includes a second heat exchanger installed on the oil return pipeline, and the water outlet end of the first heat exchanger is connected to the water inlet end of the water tank via the second heat exchanger.

[0012] Furthermore, the fuel tank has an oil replenishing pipeline, and the temperature regulating component also includes a third heat exchanger installed on the oil replenishing pipeline, and the water outlet end of the second heat exchanger is connected to the water inlet end of the water tank via the third heat exchanger.

[0013] Furthermore, the fuel tank also includes a fourth heat exchanger and a solenoid valve, the third heat exchanger has a first water outlet and a second water outlet, the water tank has a first water inlet and a second water inlet, the first water outlet of the third heat exchanger is connected to the first water inlet of the water tank via the solenoid valve, and the second water outlet of the third heat exchanger is connected to the second water inlet of the water tank via the fourth heat exchanger.

[0014] Furthermore, the temperature control module is connected to the solenoid valve, and controls the opening and closing degree of the solenoid valve according to the temperature information of the output end of the oil supply pipeline.

[0015] Compared with the prior art, the weight change of the fuel tank can be accurately known by the weighing device arranged at the bottom of the fuel tank, and the weight change rate of the fuel tank can be controlled by controlling the flow regulating component, that is, the flow rate of the fuel in the fuel supply pipeline is controlled, replacing the flow meter, and the measurement is more accurate. At the same time, the flow information of the output end of the fuel supply pipeline can be known through the feedback module, and the flow regulating component can be further fine-tuned to stably and accurately control the fuel flow output from the fuel supply pipeline. The feedback module can also feedback the temperature information of the fuel at the output end of the fuel supply pipeline, so as to accurately adjust the temperature of the output fuel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the overall structure of the fuel flow temperature control metering system provided in an embodiment of the present invention; Figure 2 A schematic diagram of the arrangement of the oil replenishing components in the fuel flow temperature control metering system provided by an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a temperature regulating component in a fuel flow temperature control and metering system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0018] like Figure 1As shown, it is a schematic diagram of the overall structure of the fuel flow temperature control metering system provided by an embodiment of the present invention. A fuel flow temperature control metering system provided by the present invention includes a fuel assembly 100, a flow regulating assembly 200, a temperature regulating assembly 300 and a control assembly 400. The fuel assembly 100 includes a fuel tank 110 and a weighing device 120 installed at the bottom of the fuel tank 110. The fuel tank 110 has an oil supply pipeline 111. The oil inlet end of the oil supply pipeline 111 is connected to the fuel tank 110. The flow regulating assembly 200 includes a flow regulating end installed on the oil supply pipeline 111 to regulate the flow of fuel in the oil supply pipeline 111. The temperature regulating assembly 300 includes a temperature regulating end installed on the oil supply pipeline 111 to regulate the temperature of the fuel in the oil supply pipeline 111. The control assembly 400 The component 400 includes a feedback module 410, a flow control module 420 and a temperature control module 430. The feedback module 410 is installed at the output end of the fuel supply pipeline 111 and is used to detect the flow and temperature of the fuel in the fuel supply pipeline 111. The feedback module 410 and the weighing device 120 are both electrically connected to the flow regulating end via the flow control module 420. The flow control module 420 controls the operation of the flow regulating end according to the flow information at the output end of the fuel supply pipeline 111 and the fuel change value in the fuel tank 110. The feedback module 410 is electrically connected to the temperature regulating end via the temperature control module 430. The temperature control module 430 controls the operation of the temperature regulating end according to the temperature information at the output end of the fuel supply pipeline 111.

[0019] During implementation, the weight change of the fuel tank 110 can be accurately known by the weighing device 120 arranged at the bottom of the fuel tank 110, and the weight change rate of the fuel tank 110 can be controlled by controlling the flow regulating component 200, that is, the flow rate of the fuel in the fuel supply pipeline 111 is controlled, replacing the flow meter, and the measurement is more accurate. At the same time, the flow information of the output end of the fuel supply pipeline 111 can be known through the feedback module 410, and the flow regulating component 200 can be further fine-tuned to stably and accurately control the fuel flow output by the fuel supply pipeline 111. The feedback module 410 can also feedback the temperature information of the fuel at the output end of the fuel supply pipeline 111, so as to accurately adjust the temperature of the output fuel.

[0020] The fuel assembly 100 in this embodiment provides fuel for the engine, and includes a fuel tank 110 and a weigher 120 installed at the bottom of the fuel tank 110 . The fuel tank 110 has a fuel supply pipeline 111 .

[0021] The fuel tank 110 is a box structure for storing fuel, and the weigher 120 can be implemented by a high-precision weighing scale.

[0022] The flow regulating assembly 200 in this embodiment includes a flow regulating end installed on the oil supply pipeline 111 to regulate the flow of fuel in the oil supply pipeline 111 .

[0023] In one embodiment, the flow regulating assembly 200 includes a first oil pump 210 installed on the oil supply pipeline 111 , and the first oil pump 210 is electrically connected to the flow control module 420 .

[0024] Specifically, when the fuel flow fed back by the feedback module 410 is greater than the preset value, the flow control module 420 reduces the power of the first oil pump 210; conversely, when the fuel flow fed back by the feedback module 410 is less than the preset value, the flow control module 420 increases the power of the first oil pump 210.

[0025] In one embodiment, the fuel tank 110 has an oil return line 112, the oil outlet end of the oil return line 112 is connected to the fuel tank 110, and the flow regulating assembly 200 further includes a pressure regulating valve 220 installed on the oil return line 112. By adjusting the opening and closing degree of the pressure regulating valve 220, the fuel returning from the engine can be controlled.

[0026] In one embodiment, the fuel tank 110 has an oil replenishing pipeline 113, the oil outlet end of the oil replenishing pipeline 113 is connected to the fuel tank 110, and the flow regulating assembly 200 also includes an oil replenishing component 230 installed on the oil replenishing pipeline 113, and the oil replenishing component 230 is electrically connected to the flow control module 420, and the flow control module 420 is used to adjust the oil replenishing flow of the oil replenishing component 230.

[0027] like Figure 2 As shown, it is a schematic diagram of the arrangement of the oil replenishing component 230 in the fuel flow temperature control metering system provided in an embodiment of the present invention. The oil replenishing component 230 includes an oil replenishing tank 231, a second oil pump 232 and a control valve 233 which are sequentially arranged on the oil replenishing pipeline 113 along the direction of the fuel tank 110. The second oil pump 232 and the control valve 233 are both electrically connected to the flow control module 420. The flow control module 420 is used to adjust the power of the second oil pump 232 and the opening and closing degree of the control valve 233.

[0028] When the fuel level in the fuel tank 110 is lower than a preset value (which can be known through the weighing device 120), the flow control module 420 controls the first oil pump 210 to be turned off and the second oil pump 232 to be turned on. At the same time, the flow rate of the fuel in the replenishing pipeline 113 can be adjusted by adjusting the power of the second oil pump 232 and the opening degree of the control valve 233.

[0029] The temperature regulating assembly 300 in this embodiment includes a temperature regulating end installed on the fuel supply pipeline 111 to regulate the temperature of the fuel in the fuel supply pipeline 111 .

[0030] like Figure 3As shown, it is a structural schematic diagram of the temperature adjustment component 300 in the fuel flow temperature control metering system provided in an embodiment of the present invention. The temperature adjustment component 300 includes a water tank 310, a water pump 320 and a first heat exchanger 330 installed on the fuel supply pipeline 111. The water outlet end of the water tank 310 is connected to the water inlet end of the first heat exchanger 330 via the water pump 320, and the water outlet end of the first heat exchanger 330 is connected to the water inlet end of the water tank 310. The water pump 320 is electrically connected to the temperature control module 430, and the temperature control module 430 is used to adjust the power of the water pump 320.

[0031] Specifically, when the fuel temperature fed back by the feedback module 410 is greater than the preset value, the temperature control module 430 increases the power of the water pump 320; conversely, when the fuel flow fed back by the feedback module 410 is less than the preset value, the flow control module 420 reduces the power of the water pump 320.

[0032] In one embodiment, the fuel tank 110 has an oil return line 112 , and the temperature adjustment component 300 further includes a second heat exchanger 340 installed on the oil return line 112 . The water outlet of the first heat exchanger 330 is connected to the water inlet of the water tank 310 via the second heat exchanger 340 .

[0033] It is understandable that in addition to adjusting the power of the water pump 320, the opening and closing degree of the pressure regulating valve 220 can also be adjusted synchronously, that is, the flow in the return oil pipeline 112 is controlled to ensure that the fuel entering the fuel tank 110 reaches a preset temperature, avoiding temperature differences between the oil entering and leaving the fuel tank 110, and affecting the stability of the fuel temperature in the fuel tank 110.

[0034] In one embodiment, the fuel tank 110 has a fuel replenishing pipeline 113, and the temperature adjustment component 300 also includes a third heat exchanger 350 installed on the fuel replenishing pipeline 113, and the water outlet of the second heat exchanger 340 is connected to the water inlet of the water tank 310 via the third heat exchanger 350.

[0035] At the same time, in addition to adjusting the power of the water pump 320, the opening and closing degree of the control valve 233 can also be adjusted synchronously, that is, the flow in the oil replenishment pipeline 113 is controlled to ensure that the fuel entering the fuel tank 110 reaches a preset temperature, thereby avoiding a temperature difference between the oil entering and leaving the fuel tank 110, which affects the stability of the fuel temperature in the fuel tank 110.

[0036] The fuel tank 110 in this embodiment also includes a fourth heat exchanger 360 and a solenoid valve 370. The third heat exchanger 350 has a first water outlet and a second water outlet. The water tank 310 has a first water inlet and a second water inlet. The first water outlet of the third heat exchanger 350 is connected to the first water inlet of the water tank 310 via the solenoid valve 370, and the second water outlet of the third heat exchanger 350 is connected to the second water inlet of the water tank 310 via the fourth heat exchanger 360.

[0037] The temperature control module 430 is connected to the solenoid valve 370 , and controls the opening and closing degree of the solenoid valve 370 according to the temperature information of the output end of the oil supply pipeline 111 .

[0038] Specifically, if the temperature of the fuel output from the fuel supply pipeline 111 is too high, the opening and closing degree of the solenoid valve 370 can be reduced, so that more circulating water is distributed to the fourth heat exchanger 360, and this part of the water is returned to the water tank 310 after being cooled by the fourth heat exchanger 360, which can improve the cooling efficiency of the entire temperature adjustment component 300. It can be understood that the greater the difference between the fuel temperature output from the fuel supply pipeline 111 and the preset value, the greater the opening and closing degree of the solenoid valve 370, and the smaller the difference between the fuel temperature output from the fuel supply pipeline 111 and the preset value, the smaller the opening and closing degree of the solenoid valve 370.

[0039] It should be noted that the first heat exchanger 330, the second heat exchanger 340 and the third heat exchanger 350 may use heat exchange tubes, which are arranged through the return oil pipeline 111, the return oil pipeline 112 and the replenishment oil pipeline 113 to exchange heat with the fuel in the corresponding pipelines. Of course, it is understandable that the heat exchangers may also be replaced by other forms of structures, which are not limited to this.

[0040] At the same time, the fourth heat exchanger 360 is used to cool the diverted circulating water and return it to the water tank 310, so as to control the temperature of the circulating water.

[0041] In this implementation scheme, the control component 400 includes a feedback module 410, a flow control module 420 and a temperature control module 430. The feedback module 410 is installed at the output end of the fuel supply pipeline 111, and is used to detect the flow and temperature of the fuel in the fuel supply pipeline 111. The feedback module 410 and the weighing device 120 are both electrically connected to the flow regulating end via the flow control module 420. The flow control module 420 controls the operation of the flow regulating end according to the flow information at the output end of the fuel supply pipeline 111 and the fuel change value in the fuel tank 110. The feedback module 410 is electrically connected to the temperature regulating end via the temperature control module 430. The temperature control module 430 controls the operation of the temperature regulating end according to the temperature information at the output end of the fuel supply pipeline 111.

[0042] Among them, the feedback module 410 can use a pressure sensor to detect the flow rate of fuel in the fuel supply pipeline. At the same time, the feedback module 410 can use a thermometer to detect the temperature of the fuel in the fuel supply pipeline 111. The feedback module 410 transmits the detected flow information and temperature to the flow control module 420.

[0043] The flow control module 420 is a structure that can be thought of by a person skilled in the art to control the pump and valve actions according to gravity changes and flow changes. Similarly, the temperature control module 430 is a structure that can be thought of by a person skilled in the art to control the pump and valve actions according to temperature changes.

[0044] In one embodiment, the fuel assembly 100 is further provided with an air release valve 114 and a pressure relief valve 115 .

[0045] Workflow: 1) During the fuel supply stage, the liquid level in the fuel tank 110 is higher than the preset minimum liquid level. At this time, the gravity information of the fuel tank 110 is fed back to the flow control module 420 through the weighing device 120. The flow control module 420 controls the operation of the first fuel pump 210, and can know the fuel flow delivered to the fuel supply pipeline 111 from the fuel tank 110 according to the gravity change rate of the fuel tank 110, and control the power of the first fuel pump 210 to control the size of the fuel flow delivered to the fuel supply pipeline 111; and the flow information of the output end of the fuel supply pipeline 111 can be known through the feedback module 410. When the fuel flow fed back by the feedback module 410 is greater than the preset value, the flow control module 420 reduces the power of the first fuel pump 210; conversely, when the fuel flow fed back by the feedback module 410 is less than the preset value, the flow control module 420 increases the power of the first fuel pump 210. Thus, closed-loop control of the fuel flow in the fuel supply pipeline is achieved.

[0046] 2) During the refueling stage, the liquid level in the fuel tank 110 is lower than its preset minimum liquid level. At this time, the gravity information of the fuel tank 110 is fed back to the flow control module 420 through the weighing device 120. The flow control module 420 controls the first oil pump 210 to be turned off and the second oil pump 232 to be turned on. At the same time, the flow rate of the fuel in the refueling pipeline 113 can be adjusted by adjusting the power of the second oil pump 232 and the opening degree of the control valve 233.

[0047] Compared with the prior art: the weight change of the fuel tank 110 can be accurately known by the weighing device 120 arranged at the bottom of the fuel tank 110, and the weight change rate of the fuel tank 110 can be controlled by controlling the flow regulating component 200, that is, the flow rate of the fuel in the fuel supply pipeline 111 is controlled, replacing the flow meter, and the measurement is more accurate. At the same time, the flow information of the output end of the fuel supply pipeline 111 can be known through the feedback module 410, and the flow regulating component 200 can be further fine-tuned to stably and accurately control the fuel flow output by the fuel supply pipeline 111. The feedback module 410 can also feedback the temperature information of the fuel at the output end of the fuel supply pipeline 111, so as to accurately adjust the temperature of the output fuel.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A fuel flow temperature control metering system, characterized in that: include: A fuel assembly, comprising a fuel tank and a weighing device installed at the bottom of the fuel tank, wherein the fuel tank has an oil supply pipeline, and an oil inlet end of the oil supply pipeline is connected to the fuel tank; A flow regulating assembly, comprising a flow regulating end mounted on the fuel supply pipeline, for regulating the flow of fuel in the fuel supply pipeline; A temperature regulating assembly, comprising a temperature regulating end mounted on the fuel supply pipeline, for regulating the temperature of the fuel in the fuel supply pipeline; A control component includes a feedback module, a flow control module and a temperature control module. The feedback module is installed at the output end of the oil supply pipeline and is used to detect the flow and temperature of the fuel in the oil supply pipeline. The feedback module and the weighing device are electrically connected to the flow regulating end via the flow control module. The flow control module controls the action of the flow regulating end according to the flow information at the output end of the oil supply pipeline and the fuel change value in the fuel tank. The feedback module is electrically connected to the temperature regulating end via the temperature control module. The temperature control module controls the action of the temperature regulating end according to the temperature information at the output end of the oil supply pipeline.

2. The fuel flow temperature control metering system according to claim 1, characterized in that: The flow regulating assembly includes a first oil pump installed on the oil supply pipeline, and the first oil pump is electrically connected to the flow control module.

3. The fuel flow temperature control metering system according to claim 1, characterized in that: The fuel tank has an oil return pipeline, the oil outlet end of the oil return pipeline is connected to the fuel tank, and the flow regulating component also includes a pressure regulating valve installed on the oil return pipeline.

4. The fuel flow temperature control metering system according to claim 1, characterized in that: The fuel tank has an oil replenishing pipeline, the oil outlet end of the oil replenishing pipeline is connected to the fuel tank, the flow regulating assembly also includes an oil replenishing part installed on the oil replenishing pipeline, the oil replenishing part is electrically connected to the flow control module, and the flow control module is used to adjust the oil replenishing flow of the oil replenishing part.

5. The fuel flow temperature control metering system according to claim 4, characterized in that: The oil replenishing component includes an oil replenishing tank, a second oil pump and a control valve which are arranged in sequence on the oil replenishing pipeline along the direction flowing toward the fuel tank. The second oil pump and the control valve are both electrically connected to the flow control module, and the flow control module is used to adjust the power of the second oil pump and the opening degree of the control valve.

6. The fuel flow temperature control metering system according to claim 1, characterized in that: The temperature regulating component includes a water tank, a water pump and a first heat exchanger installed on the oil supply pipeline. The water outlet of the water tank is connected to the water inlet of the first heat exchanger via the water pump, and the water outlet of the first heat exchanger is connected to the water inlet of the water tank. The water pump is electrically connected to the temperature control module, and the temperature control module is used to adjust the power of the water pump.

7. The fuel flow temperature control metering system according to claim 6, characterized in that: The fuel tank has an oil return pipeline, and the temperature regulating component also includes a second heat exchanger installed on the oil return pipeline. The water outlet end of the first heat exchanger is connected to the water inlet end of the water tank via the second heat exchanger.

8. The fuel flow temperature control metering system according to claim 7, characterized in that: The fuel tank has an oil replenishing pipeline, and the temperature regulating component also includes a third heat exchanger installed on the oil replenishing pipeline. The water outlet end of the second heat exchanger is connected to the water inlet end of the water tank via the third heat exchanger.

9. The fuel flow temperature control metering system according to claim 8, characterized in that: The fuel tank also includes a fourth heat exchanger and a solenoid valve, the third heat exchanger has a first water outlet and a second water outlet, the water tank has a first water inlet and a second water inlet, the first water outlet of the third heat exchanger is connected to the first water inlet of the water tank via the solenoid valve, and the second water outlet of the third heat exchanger is connected to the second water inlet of the water tank via the fourth heat exchanger.

10. The fuel flow temperature control metering system according to claim 9, characterized in that: The temperature control module is connected to the solenoid valve and controls the opening and closing degree of the solenoid valve according to the temperature information of the output end of the oil supply pipeline.

Images