Oil delivery pump testing system

Abstract

The utility model provides an oil delivery pump test system, which comprises an oil tank monitoring module, a test control module and a system power supply, the fuel tank monitoring module is in communication connection with the test control module; the system power supply is used for system power supply; the oil tank monitoring module comprises a working oil tank, a tested piece mounting rack and a monitoring unit; the tested piece mounting rack is used for fixing a tested oil pump to carry out an oil transportation test; the monitoring unit is used for monitoring working parameters of the tested oil pump during oil transportation testing; and the test control module is used for displaying working parameters and / or power supply parameters of the tested oil pump during oil transportation test. Performance detection work of the fuel pump can be independently completed, the fuel tank monitoring module and the test control module are installed in a separated mode, a control circuit contact is far away from a fuel tank, the fuel tank is isolated, and work is safer; the structure is simple, operation is convenient, work is stable, and data display is visual; metering ports are reserved in devices in the system, and direct in-situ metering can be achieved without dismounting a display instrument.

Description

Technical Field

[0001] This utility model relates to the field of oil pump testing technology, and specifically to an oil pump testing system. Background Technology

[0002] An oil pump testing system is used to check whether the internal temperature, pressure, and other performance data of an oil pump meet the standards during operation. In traditional oil pump testing systems, the testing device and the control device are located close to each other, posing certain safety hazards to operators during operation and making it inconvenient for operators to directly view the test data, thus reducing work efficiency. Utility Model Content

[0003] Therefore, this utility model provides an oil pump testing system, which aims to solve the technical problems of traditional oil pump testing systems, such as safety hazards and inconvenience for operators.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] According to a first aspect of this utility model, this utility model provides an oil pump testing system, the system comprising: an oil tank monitoring module, a test control module, and a system power supply; the oil tank monitoring module is communicatively connected to the test control module; the system power supply is connected to the test control module and is used for powering the system;

[0006] The fuel tank monitoring module includes a working fuel tank, a movable test piece mounting bracket, and a monitoring unit fixed on the working fuel tank.

[0007] The test piece mounting bracket is detachably fixed inside the working oil tank and is used to fix the test oil pump below the fuel level inside the working oil tank so that the test oil pump can be tested for oil delivery.

[0008] The monitoring unit is used to monitor the operating parameters of the tested oil pump during the oil delivery test; wherein, the operating parameters include fuel pressure, fuel temperature and / or fuel flow rate;

[0009] The test control module includes an oil pump power switch, a flow control button, and a working parameter display.

[0010] The oil pump power switch is used to control the on / off state of the oil pump test circuit.

[0011] The flow control button is used to adjust the fuel flow rate of the tested oil pump.

[0012] The operating parameter display screen is used to display the operating parameters and / or power parameters of the oil pump under test during the oil delivery test.

[0013] Furthermore, the fuel tank monitoring module also includes an oil outlet hose, an oil outlet flange, and an oil pump power supply plug;

[0014] The oil outlet flange is fixed to the opening below the mounting bracket of the test piece;

[0015] The first end of the oil outlet hose is connected to the oil outlet of the oil pump under test, and the second end is connected to the oil outlet flange interface; the first end of the oil pump power supply plug is connected to the power input port of the oil pump under test, and the second end is connected to the system power supply through the test control module.

[0016] Furthermore, the monitoring unit includes a flow sensor, a pressure sensor, a temperature sensor, a flow regulating valve, and a flow pipeline;

[0017] The flow sensor is used to monitor the fuel flow rate when the tested oil pump is performing an oil delivery test.

[0018] The pressure sensor is used to monitor the fuel pressure when the tested oil pump is performing an oil delivery test.

[0019] The temperature sensor is used to monitor the fuel temperature during the fuel delivery test of the oil pump under test.

[0020] The flow regulating valve is used to control the rise and fall of the fuel flow rate when the oil pump under test is performing an oil delivery test.

[0021] The flow pipeline is used to connect the oil outlet flange interface, the flow sensor, the pressure sensor, the temperature sensor and the flow regulating valve, and finally returns to the working oil tank through the elbow hard pipe.

[0022] Furthermore, the fuel tank monitoring module also includes a junction box fixed to the working fuel tank;

[0023] The junction box includes a CZ1 socket, a CZ2 socket, and a CZ3 outlet;

[0024] The second end of the oil pump power supply plug, the flow sensor, the pressure sensor, the temperature sensor, and the flow regulating valve are connected to the CZ3 socket;

[0025] The first end of the CZ1 connector is connected to the flow sensor, the pressure sensor, the temperature sensor, and the flow regulating valve, and the second end is connected to the test control module.

[0026] The first end of the CZ2 connector is connected to the power supply of the oil pump under test, and the second end is connected to the power switch of the oil pump.

[0027] Furthermore, the test control module also includes an operation panel and a parameter combination instrument;

[0028] The oil pump power switch, the flow control button, the working parameter display, and the parameter combination instrument are all located on the operation panel;

[0029] The operating parameter display includes a fuel flow display, a fuel pressure display, and a fuel temperature display.

[0030] The parameter combination instrument is connected to the oil pump power switch and includes a voltmeter, an ammeter and / or a power factor meter, used to display the operating voltage, operating current and / or operating power of the oil pump under test during oil delivery testing.

[0031] Furthermore, the test control module also includes a fuel flow pulse subdivision circuit;

[0032] The fuel flow pulse subdivision circuit is connected to the flow sensor and the flow display through the junction box, respectively, and is used to process the frequency pulse signal generated by the flow sensor when the fuel pump under test is tested to obtain stable fuel flow data.

[0033] Furthermore, the flow control button is connected to the flow regulating valve via the junction box;

[0034] The flow control button is used to control the opening and closing of the flow regulating valve based on the user's jogging operation, so as to regulate the rise and fall of fuel flow.

[0035] Furthermore, the system power supply is a three-phase 115Vac / 400Hz AC power supply;

[0036] The test control module also includes a system power switch and a 115Vac / 24VDC converter;

[0037] The system power switch is connected to the system power supply and the 115Vac / 24VDC converter respectively, and is used to switch the overall circuit of the control system on and off.

[0038] The 115Vac / 24VDC converter is connected to the parameter combination instrument and is used to convert the power input voltage into the operating voltage.

[0039] Furthermore, the control panel is also equipped with an emergency stop button;

[0040] The emergency stop button is used to cut off the circuit in case of an unexpected situation during the oil pump test.

[0041] Furthermore, the system also includes a movable trolley with wheels;

[0042] The fuel tank monitoring module is mounted on the mobile trolley.

[0043] The present invention, by adopting the above technical solution, has at least the following beneficial effects:

[0044] This invention provides a fuel pump testing system, comprising: a fuel tank monitoring module, a test control module, and a system power supply; the fuel tank monitoring module is communicatively connected to the test control module; the system power supply is connected to the test control module for powering the system; the fuel tank monitoring module includes a working fuel tank, a movable test piece mounting bracket, and a monitoring unit fixed to the working fuel tank; the test piece mounting bracket is detachably fixed inside the working fuel tank to ensure the fuel pump under test is immersed below the fuel level inside the working fuel tank, allowing the fuel pump under test to perform fuel delivery testing; the monitoring unit is used to monitor the operating parameters of the fuel pump under test during fuel delivery testing; wherein, the operating parameters include fuel pressure, fuel temperature, and / or fuel flow rate; the test control module includes a fuel pump power switch, a flow control button, and a working parameter display; the fuel pump power switch is used to control the on / off state of the fuel pump test circuit; the flow control button is used to adjust the fuel flow rate of the fuel pump under test; the working parameter display screen is used to display the operating parameters and / or power parameters of the fuel pump under test during fuel delivery testing. Therefore, the fuel pump testing system proposed in this utility model can independently complete the performance testing of the fuel pump; the fuel tank monitoring module and the test control module are installed separately, and the control circuit contacts are far away from the fuel tank, making them isolated and safer to operate; the system has a simple structure, is easy to operate, works stably, and displays data intuitively; moreover, the components in the system have reserved metering ports, so direct in-situ metering can be achieved without disassembling the display instrument.

[0045] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This diagram shows the overall structure of the oil pump testing system provided in an embodiment of the present invention.

[0048] Figure 2 This shows a front view of the operation panel of the test control module provided in an embodiment of the present invention;

[0049] Figure 3This diagram illustrates the device connections of the oil pump testing system provided in an embodiment of the present invention.

[0050] Figure 4 The circuit diagram of the oil pump testing system provided by this utility model is shown.

[0051] Reference numerals: 100-Fuel tank monitoring module; 200-Test control module; 300-System power supply; 110-Working oil tank; 120-Test piece mounting bracket; 130-Monitoring unit; 400-Test oil pump. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0053] This utility model provides an oil pump testing system, suitable for RLB-40 AC oil pumps, for reference. Figure 1 This is a schematic diagram of the overall structure of an oil pump testing system. The oil pump testing system may include at least a tank monitoring module 100, a test control module 200, and a system power supply 300. The tank monitoring module 100 is communicatively connected to the test control module 200; the system power supply 300 is connected to the test control module 200 and is used for system power supply.

[0054] Specifically, the fuel tank monitoring module 100 includes a working fuel tank 110 (including a fuel level dipstick and a bottom drain valve), a movable test piece mounting bracket 120, and a monitoring unit 130 fixed on the working fuel tank 110. The test piece mounting bracket 120 is detachably fixed inside the working fuel tank 110 and can be used to fix the test fuel pump 400 below the fuel level inside the working fuel tank 110, so that the test fuel pump 400 can perform fuel delivery tests. The monitoring unit 130 is used to monitor the operating parameters of the test fuel pump 400 during fuel delivery tests. The operating parameters include fuel pressure, fuel temperature, and fuel flow rate.

[0055] The test control module 200 includes an oil pump power switch, a flow control button, and a working parameter display. The oil pump power switch can be used to control the on / off state of the oil pump test circuit. The flow control button can be used to adjust the fuel flow rate of the oil pump 400 under test. The working parameter display can be used to display the working parameters and / or power parameters of the oil pump 400 under test during the oil delivery test.

[0056] In an optional embodiment, the oil tank monitoring module 100 further includes an oil outlet hose, an oil outlet flange, and an oil pump power supply plug; the oil outlet flange is fixed to the opening below the test piece mounting bracket 120; the first end of the oil outlet hose is connected to the oil outlet of the oil pump 400 under test, and the second end is connected to the oil outlet flange interface; the first end of the oil pump power supply plug is connected to the power input port of the oil pump 400 under test, and the second end is connected to the system power supply 300 through the test control module 200.

[0057] The fuel tank monitoring module 100 in this embodiment can be divided into a movable part and a fixed part. The movable part is a movable test piece mounting bracket 120, which can be lifted upward from the upper left opening of the working fuel tank 110. The oil outlet flange of the fuel pump 400 under test can be fixed to the circular opening below the mounting bracket with screws. The oil outlet hose is connected to the oil outlet of the fuel pump 400 under test, and the other end is connected to the oil outlet mounting flange. The fuel pump power plug is connected to the fuel pump. Then, the test piece mounting bracket 120, along with the fuel pump 400 under test, is immersed downward below the fuel level through the square opening at the top of the working fuel tank 110.

[0058] The fixed part is the monitoring unit 130, which includes a flow sensor, a pressure sensor, a temperature sensor, a flow regulating valve, and a flow pipeline. The flow sensor is used to monitor the fuel flow rate of the tested oil pump 400 during the fuel delivery test; the pressure sensor is used to monitor the fuel pressure of the tested oil pump 400 during the fuel delivery test; the temperature sensor is used to monitor the fuel temperature of the tested oil pump 400 during the fuel delivery test; the flow regulating valve is used to control the rise and fall of the fuel flow rate of the tested oil pump 400 during the fuel delivery test; the flow pipeline connects the oil outlet flange interface, the flow sensor, the pressure sensor, the temperature sensor, and the flow regulating valve, and finally returns to the working oil tank 110 through a bend in the rigid pipe.

[0059] In an optional embodiment, the fuel tank monitoring module 100 further includes a junction box fixed on the working fuel tank 110; the junction box includes a CZ1 socket, a CZ2 socket, and a CZ3 socket; the second end of the fuel pump power supply plug, the flow sensor, the pressure sensor, the temperature sensor, and the flow regulating valve are connected to the CZ3 socket; the first end of the CZ1 socket is connected to the flow sensor, the pressure sensor, the temperature sensor, and the flow regulating valve, and the second end is connected to the test control module 200; the first end of the CZ2 socket is connected to the tested fuel pump 400 for power, and the second end is connected to the fuel pump power switch.

[0060] Preferably, in practical applications, the temperature sensor and junction box can be directly fixed to the working oil tank 110; the flow sensor, pressure sensor, and flow regulating valve can be connected together via metal pipes and then fixed to the working oil tank 110. The second end of the oil pump power supply plug can be connected to the CZ3 socket of the junction box, and the system power supply 300 can be connected through the junction box.

[0061] In an optional embodiment, the test control module 200 may further include an operation panel and a parameter combination instrument; the oil pump power switch, flow control button, working parameter display and parameter combination instrument are all located on the operation panel; the working parameter display includes a fuel flow display, a fuel pressure display and a fuel temperature display; the parameter combination instrument is connected to the oil pump power switch and includes a voltmeter, an ammeter and / or a power factor meter, used to display the working voltage, working current and working power of the oil pump 400 under test when it is performing an oil delivery test.

[0062] like Figure 2 The image shows a front view of the operation panel of the test control module 200, which includes an oil pump power switch, a flow control button, a fuel flow display, a fuel pressure display, a fuel temperature display, and a parameter combination instrument.

[0063] like Figure 3 The diagram shows the component connections of the fuel pump test system. The flow sensor is connected to the fuel flow pulse subdivision circuit and the fuel flow display via the CZ1 connector. The fuel flow pulse subdivision circuit is used to process the frequency pulse signal generated by the flow sensor when the fuel pump 400 is tested to obtain stable fuel flow data. The pressure sensor is connected to the fuel pressure display via the CZ1 connector. The temperature sensor is connected to the fuel temperature display via the CZ1 connector.

[0064] Specifically, the fuel flow display shows values ​​in liters per hour, with a range of 0-6000 L / h. Figure 2 In the fuel flow display, the three sockets below the fuel flow meter are metering and testing terminals. During normal operation, the Fout-Fin sockets are shorted with a short circuit, allowing the frequency pulses from the flow sensor to connect to the fuel flow meter. Below the fuel flow meter on the right is the fuel pump indicator light, which illuminates when the tested fuel pump 400 is undergoing a fuel delivery test.

[0065] The fuel pressure indicator displays values ​​in MPa, with a range of 0–0.2 MPa. Figure 2 In the middle, the three sockets below the fuel pressure display are metering and testing terminals. During normal operation, the Iout-Iin sockets are shorted with a short circuit, so that the current signal sent by the pressure sensor is connected to the fuel pressure display.

[0066] The fuel temperature display shows values ​​in degrees Celsius (°C), with a range of -55 to 100°C. The three sockets below the fuel temperature display are metering terminals. During normal operation, short-circuit the Iout and Iin sockets with a shorting pin, thus connecting the current signal from the temperature sensor to the fuel temperature display.

[0067] The oil pump power switch is located between the oil pump 400 under test and the parameter combination instrument. It is the working power switch of the oil pump 400 under test and has two mechanical positions, corresponding to the open and closed states respectively.

[0068] In an optional embodiment, the flow control button on the control panel is also connected to the flow regulating valve via a junction box. The flow control button is used to control the opening and closing of the flow regulating valve based on user-controlled inching, thereby adjusting the fuel flow rate. The flow regulating valve includes two opening buttons: an upward button increases the valve opening, causing the flow rate to increase; a downward button decreases the valve opening, causing the flow rate to decrease. These two buttons provide inching control, allowing for minute adjustments to the flow rate and improving flow control accuracy.

[0069] In an optional embodiment, the system power supply 300 is a three-phase 115Vac / 400Hz AC power supply. This power supply has an input of 220Vac / 50Hz and an output of three-phase 115Vac / 400Hz. It is a pre-built power supply and can meet the testing requirements of the RLB-40 fuel pump. The test control module 200 also includes a system power switch and a 115Vac / 24VDC converter. The system power switch is connected to both the system power supply 300 and the 115Vac / 24VDC converter, used to control the overall circuitry of the control system. The 115Vac / 24VDC converter is connected to a parameter combination instrument, used to convert the power input voltage to the operating voltage.

[0070] Parameter combination instrument ( Figure 2 The display (shown in the middle as a three-phase 400Hz power supply parameter display) is used to display the oil pump operating current, with the display value in A and a display range of 0-5A. The seven sockets below it are metering and testing terminals. During normal operation, the Uout-Uin sockets are shorted with a shorting pin (A, B, and C), allowing the three-phase 400Hz power supply to flow through the power supply parameter display.

[0071] In an optional embodiment, the operation panel is also provided with an emergency stop button; the emergency stop button is used to cut off the circuit in case of an unexpected situation when the oil pump 400 under test is performing an oil delivery test. When the emergency stop button is pressed, the power is disconnected, and when it is turned clockwise and lifted, it is in normal working condition.

[0072] In an optional embodiment, the oil pump testing system may further include a movable trolley with wheels; the tank monitoring module 100 is mounted on the movable trolley, allowing for easy movement of the tank monitoring module 100. Based on this, the tank monitoring module 100 and the test control module 200 in this invention can be installed separately, with the control circuit contacts located away from the tank for isolation and safer operation. The oil pump testing system has a simple overall structure, is easy to operate, operates stably, and provides intuitive data display.

[0073] like Figure 4 The diagram shown is a circuit schematic of the oil pump testing system. The working principle of the oil pump testing system proposed in this invention is described below:

[0074] When the system power switch and fuel pump power switch on the test control module 200 are in the ON position, the fuel pump 400 under test is powered on and begins to work. The fuel pump delivers fuel through the outlet hose, outlet flange interface, flow sensor, pressure sensor, flow regulating valve, and elbow rigid pipe to the working fuel tank 110. During testing, the operating voltage and current of the fuel pump 400 can be displayed on the parameter combination instrument. The flow sensor generates a frequency pulse signal proportional to the flow rate, which is transmitted to the test control module 200 via a junction box. In the test control module 200, the signal passes through the metering port and is then transmitted via terminals to the fuel flow pulse subdivision circuit, and finally to the fuel flow display. The fuel flow display is an LCD pointer type display with an internal filtering circuit to ensure stable flow display. The pressure sensor converts 0-0.2MPa pressure into a 4-20mA current signal, which is transmitted through the junction box to the metering port of the test control module 200 and then via terminals to the fuel pressure display. The flow rate of fuel is adjusted by the flow regulating valve on the test control module 200, which is controlled by a flow sensor. The opening range is 0-100%. A temperature sensor is installed on the upper end of the working fuel tank 110. The temperature probe enters the fuel level compartment to sense the fuel temperature in the tank, converting the -50 to +100℃ temperature into a 4-20mA current signal. This signal is then transmitted via a junction box to the temperature measurement port on the test control module 200, and finally connected to a fuel temperature display for display.

[0075] In a practical application scenario, the oil pump testing system proposed in this embodiment of the invention is applicable to the RLB-40 AC oil pump. The following are examples of test parameter requirements:

[0076] Standard flow rate measurement range: 0-6000L / h; Instantaneous flow rate measurement accuracy: 0.5%FS; Pressure sensor range: 0-200KPa; Pressure measurement accuracy: 0.2%FS; Temperature sensor range: -50-100℃ (test temperature 15-35℃); Temperature measurement accuracy: 0.5%FS; Tank volume: 100L; Test bench power supply: three-phase 115Vac±10%Vac / 400Hz; Working current: 10A; Oil pump test mounting flange interface (RLB-40); Working medium: RP-3 (aviation kerosene); Working ambient temperature: -10℃~+70℃; Working fluid temperature: -10℃~+70℃; Storage temperature: -20℃+70℃.

[0077] The following table lists the specifications of the main components used in the oil pump testing system:

[0078]

[0079]

[0080] In summary, the fuel pump testing system proposed in this utility model can independently complete the performance testing of the fuel pump; the fuel tank monitoring module 100 and the test control module 200 are installed separately, and the control circuit contacts are far away from the fuel tank, making them isolated and safer to operate; the system has a simple structure, is easy to operate, works stably, and displays data intuitively; moreover, the components in the system have reserved metering ports, which can achieve direct in-situ metering without disassembling the display instrument.

[0081] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0082] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0083] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0084] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An oil pump testing system, characterized in that, The system includes: a fuel tank monitoring module, a test control module, and a system power supply; the fuel tank monitoring module is communicatively connected to the test control module; the system power supply is connected to the test control module and is used to power the system. The fuel tank monitoring module includes a working fuel tank, a movable test piece mounting bracket, and a monitoring unit fixed on the working fuel tank. The test piece mounting bracket is detachably fixed inside the working oil tank and is used to fix the test oil pump below the fuel level inside the working oil tank so that the test oil pump can be tested for oil delivery. The monitoring unit is used to monitor the operating parameters of the tested oil pump during the oil delivery test; wherein, the operating parameters include fuel pressure, fuel temperature and / or fuel flow rate; The test control module includes an oil pump power switch, a flow control button, and a working parameter display. The oil pump power switch is used to control the on / off state of the oil pump test circuit. The flow control button is used to adjust the fuel flow rate of the tested oil pump. The operating parameter display screen is used to display the operating parameters and / or power parameters of the oil pump under test during the oil delivery test.

2. The system according to claim 1, characterized in that, The oil tank monitoring module also includes an oil outlet hose, an oil outlet flange, and an oil pump power supply plug; The oil outlet flange is fixed to the opening below the mounting bracket of the test piece; The first end of the oil outlet hose is connected to the oil outlet of the oil pump under test, and the second end is connected to the oil outlet flange interface; the first end of the oil pump power supply plug is connected to the power input port of the oil pump under test, and the second end is connected to the system power supply through the test control module.

3. The system according to claim 2, characterized in that, The monitoring unit includes a flow sensor, a pressure sensor, a temperature sensor, a flow regulating valve, and a flow pipeline; The flow sensor is used to monitor the fuel flow rate when the tested oil pump is performing an oil delivery test. The pressure sensor is used to monitor the fuel pressure when the tested oil pump is performing an oil delivery test. The temperature sensor is used to monitor the fuel temperature during the fuel delivery test of the oil pump under test. The flow regulating valve is used to control the rise and fall of the fuel flow rate when the oil pump under test is performing an oil delivery test. The flow pipeline is used to connect the oil outlet flange interface, the flow sensor, the pressure sensor, the temperature sensor, and the flow regulating valve, and finally returns to the working oil tank through the elbow rigid pipe.

4. The system according to claim 3, characterized in that, The fuel tank monitoring module also includes a junction box fixed on the working fuel tank; The junction box includes a CZ1 socket, a CZ2 socket, and a CZ3 outlet; The second end of the oil pump power supply plug, the flow sensor, the pressure sensor, the temperature sensor, and the flow regulating valve are connected to the CZ3 socket; The first end of the CZ1 connector is connected to the flow sensor, the pressure sensor, the temperature sensor, and the flow regulating valve, and the second end is connected to the test control module. The first end of the CZ2 connector is connected to the power supply of the oil pump under test, and the second end is connected to the power switch of the oil pump.

5. The system according to claim 4, characterized in that, The test control module also includes an operation panel and a parameter combination instrument; The oil pump power switch, the flow control button, the working parameter display, and the parameter combination instrument are all located on the operation panel; The operating parameter display includes a fuel flow display, a fuel pressure display, and a fuel temperature display. The parameter combination instrument is connected to the oil pump power switch and includes a voltmeter, an ammeter and / or a power factor meter, used to display the operating voltage, operating current and / or operating power of the oil pump under test during oil delivery testing.

6. The system according to claim 5, characterized in that, The test control module also includes a fuel flow pulse subdivision circuit; The fuel flow pulse subdivision circuit is connected to the flow sensor and the fuel flow display through the junction box, respectively, and is used to process the frequency pulse signal generated by the flow sensor when the fuel pump under test is tested to obtain stable fuel flow data.

7. The system according to claim 4, characterized in that, The flow control button is connected to the flow regulating valve via the junction box; The flow control button is used to control the opening and closing of the flow regulating valve based on the user's jogging control operation, so as to regulate the rise and fall of fuel flow.

8. The system according to claim 5, characterized in that, The system power supply is a three-phase 115Vac / 400Hz AC power supply; The test control module also includes a system power switch and a 115Vac / 24VDC converter; The system power switch is connected to the system power supply and the 115Vac / 24VDC converter respectively, and is used to switch the overall circuit of the control system on and off. The 115Vac / 24VDC converter is connected to the parameter combination instrument and is used to convert the power input voltage into the operating voltage.

9. The system according to claim 5, characterized in that, The control panel is also equipped with an emergency stop button; The emergency stop button is used to cut off the circuit in case of an unexpected situation during the oil pump test.

10. The system according to any one of claims 1 to 9, characterized in that, The system also includes a movable trolley with wheels; The fuel tank monitoring module is mounted on the mobile trolley.

Images