Portable bidirectional transfer pump detection equipment

Abstract

The invention belongs to the technical field of portable detection equipment, and particularly relates to portable bidirectional transfer pump detection equipment. Comprising a draw-bar box, a detection system and an oil tank oil transmission system are arranged in the draw-bar box, an operation table is arranged outside the top of the draw-bar box, a quick-release plug connected with an inlet and outlet of a product transfer pump is arranged on the operation table, an electrical box is installed on the upper right portion in the draw-bar box, a center control end is arranged in the electrical box, and a control panel is arranged outside the electrical box. The detection system controls connection and disconnection of the left and right connecting ports of the product and the three-way electromagnetic valves at the oil return position of the system through the central control end, so that the oil conveying direction of the product and the oil supply and return functions of the two oil tanks are switched, the oil two-way conveying test requirement can be met, and the oil level balancing function of the oil tanks can be achieved. The oil tank oil transmission system controls the on-off of the three-way solenoid valve through the central control end, so that the oil supply and return functions of the two oil tanks are switched, oil in the oil supply tank is conveyed to the oil return tank through the electric pump, the oil levels of the two oil tanks are different, the imbalance condition of the two oil tanks is created manually, and the imbalance state of the aircraft oil tanks during working is simulated. The detection equipment is light, convenient, easy to carry and transport, complete in function, and capable of simulating the working state of the transfer pump in an external field, carrying out two-way oil transmission on the transfer pump, balancing the oil level performance test of two groups of oil tanks, and detecting the temperature, the flow and the pressure of any outlet of a product.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic pump testing, and in particular relates to a portable bidirectional transfer pump testing device. Background Art

[0002] A bidirectional transfer pump is used in aircraft fuel systems to balance the oil levels between two sets of tanks. This product now requires on-site monitoring to verify its bidirectional oil transfer performance, its ability to balance the oil levels between the two tanks, and to verify that the outlet flow and pressure meet the requirements. The existing testing equipment, occupying 4 square meters and immobile, was unable to meet the requirements of field testing. Therefore, a portable testing device was needed that could be easily carried by one person to the field. Through single-person operation, the device could simulate the actual working conditions of the transfer pump balancing the oil levels between the two tanks, ensuring satisfactory performance and reliable operation. Summary of the Invention

[0003] The purpose of the present invention is to provide a portable bidirectional transfer pump testing device that can be carried, transported and operated by one person, simulates the working state of the transfer pump in the field, can perform bidirectional oil transmission and balance the oil level performance test of two groups of oil tanks on the transfer pump, and can also detect the temperature, flow rate and pressure of any outlet of the product.

[0004] Technical solution of the present invention: In order to achieve the above-mentioned purpose of the invention, the present invention proposes a portable bidirectional transfer pump detection equipment, including a trolley case, in which a detection system and a fuel tank oil transmission system are fixed, an external operating table is provided on the top of the trolley case, and a quick-release plug connected to the inlet and outlet of the product transfer pump is provided on the operating table. An electrical box is installed in the upper right corner of the trolley case, a central control terminal is provided in the electrical box, and a control panel is provided outside the electrical box. Test items can be selected on the control panel, and parameter information such as the fuel tank liquid level, pressure, flow, temperature and the product outlet can be displayed.

[0005] Furthermore, the fuel tank oil transmission system is respectively provided with three-way solenoid valves at the oil outlet and return port of the fuel tank. When the liquid level heights of the two fuel tanks are the same, the supply and return functions of the two fuel tanks can be freely switched through the control of the central control end, and the oil in the supply tank is transported to the return tank through an electric pump, so that the oil levels of the two fuel tanks are different, and an unbalanced condition of the two fuel tanks is manually created to simulate the unbalanced state of the aircraft fuel tank when working.

[0006] Furthermore, the detection system is equipped with three-way solenoid valves at the left and right connection ports of the product and the system oil return port respectively. The direction of oil transmission of the product and the supply and return oil functions of the two oil tanks can be freely switched through the control of the central control end. It can not only meet the requirements of the two-way oil transmission test, but also ensure that the set of flow meters, pressure transmitters and temperature sensors installed in the system always monitor the product outlet direction data, and can also realize the oil level balancing function of the oil tank.

[0007] Furthermore, the oil tank oil transmission system includes left and right oil tanks, left and right three-way valves, and an oil return passage; an oil suction port is provided at the bottom of the left and right oil tanks, which is connected to port I of the left and right three-way valves through a pipeline, and ports III of the left and right three-way valves are respectively connected to the inlet and outlet of the product transfer pump through pipelines; ports II of the left and right three-way valves are respectively connected to the left and right oil tanks through the oil return passage.

[0008] Furthermore, the return oil passage includes a flow meter, a throttle valve, and a three-way valve A; the inlet of the return oil passage is respectively connected to the II port of the left and right three-way valves, and the inlet of the return oil passage is connected to the three-way valve A after being connected in series with the flow meter and the throttle valve through a pipeline. The three-way valve A transports the return oil to the left and right oil tanks respectively.

[0009] Furthermore, a safety valve is connected in parallel between the flow meter inlet and the inlet of the three-way valve A; and a pressure transmitter and a temperature sensor are provided at the inlet of the return oil passage.

[0010] Furthermore, the return oil passage adopts an integrated design, and the flow meter, pressure transmitter, temperature sensor, throttle valve, and safety valve installed in the return oil pipeline are integrated and installed in a customized integrated block. The structure is compact, which meets the demand of minimizing the equipment volume as much as possible, while reducing pipeline pressure loss.

[0011] Furthermore, the detection system includes: a three-way valve B, a three-way valve C, and an electric pump; ports II and III of the three-way valve B are respectively connected to the two oil return ports of the left and right fuel tanks; port I of the three-way valve B is connected to the electric pump outlet, the electric pump inlet is connected to port I of the three-way valve C, and ports II and III of the three-way valve C are respectively connected to the two oil outlets of the left and right fuel tanks.

[0012] Furthermore, the pipelines connecting the detection system and the product inlet and outlet are provided with quick-release plugs, making the installation and disassembly process of the product on the test equipment convenient and quick.

[0013] Furthermore, the oil transfer system of the fuel tank and the pipelines connected to the oil outlet and return port of the fuel tank are all set with quick-release plugs. It is only necessary to connect the oil transfer system to the fuel tank through the quick-release plug before the equipment is used. When the equipment is not in use, the oil transfer system of the tank can be stored separately, reducing the volume requirement of the entire trolley case.

[0014] Furthermore, the trolley case is about 29 inches in size, and the original immovable testing equipment occupying 4 square meters is integrated into the trolley case. The bottom plate of the trolley case is equipped with universal wheels with brakes. The weight of the entire set of equipment does not exceed 60 kg when the fuel tank is not filled with fuel, which is easy to carry and transport to the field.

[0015] Beneficial Technical Effects: This invention switches the oil supply and return functions of the two fuel tanks by controlling the on / off switching of a three-way solenoid valve via a central control terminal. An electric pump then transfers oil from the supply tank to the return tank, causing the oil levels in the two tanks to be uneven. This manually creates an imbalance between the two tanks and simulates the unbalanced state of aircraft fuel tanks during operation. This lightweight, portable, and versatile testing device can simulate the operating state of a transfer pump in the field, perform bidirectional oil transfer tests on the transfer pump, balance the oil levels in two sets of tanks, and simultaneously detect the temperature, flow rate, and pressure at any outlet of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The schematic diagram of the equipment structure;

[0017] Figure 2 This is a simplified diagram of the equipment stand structure;

[0018] Figure 3 Schematic diagram of the detection system transferring oil from tank 1a to tank 1b;

[0019] Figure 4 Schematic diagram of the detection system transferring the oil from tank 1b to tank 1a;

[0020] Figure 5 Schematic diagram of the oil tank oil transfer system transferring oil from oil tank 1a to oil tank 1b;

[0021] Figure 6 Schematic diagram of the oil tank oil transfer system transferring oil from the oil tank 1b to the oil tank 1a;

[0022] Among them, A detection system, B fuel tank oil transmission system, 1 fuel tank, 2 fuel filter, 3 three-way solenoid valve I, 4 quick release plug, 5 integrated block, 5a temperature sensor, 5b pressure transmitter, 5c flow meter, 5d throttle valve, 5e safety valve, 6 three-way solenoid valve II, 7 liquid level gauge, 8 oil drain ball valve, 9 three-way solenoid valve III, 10 electric pump, 11 oil filter, 12 quick release plug, 13 box, 14 universal wheel, 15 pull rod, 16 operating table, 17 electrical box, 18 control panel, 19 oil suction port, 20 oil return port I, 21 oil outlet port I, 22 oil return port II, 23 oil inlet, 24 oil outlet port II, 25 central control terminal. DETAILED DESCRIPTION

[0023] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0024] An embodiment of the present invention provides a portable bidirectional transfer pump detection device, including a trolley case 13, which is equipped with a detection system A and a tank oil transfer system B. An external operating table 16 is provided on the top of the trolley case 13, and the operating table 16 is provided with quick-release plugs 4a and 4b connected to the left and right external interfaces of the product. An electrical box 17 is installed in the upper right corner of the trolley case, and a central control terminal 25 is provided in the electrical box. A control panel 18 is provided outside the electrical box. The control panel 18 is designed as a touch screen, and test items can be selected. It can display the tank liquid level, pressure, flow, temperature, etc. of the product outlet.

[0025] The trolley case is approximately 29 inches in size and includes a case 13. Universal wheels 14 with brakes are mounted on the bottom of the case 13, and a pull handle 15 is located on the back of the case, making it easy for one person to tow it. When the equipment is not in testing mode, the oil in tanks 1a and 1b can be drained using drain valves 8a and 8b. The entire set weighs no more than 60 kg dry and can be easily carried and transported to the field without any additional equipment.

[0026] The central control terminal 25 automatically receives liquid level signals from the liquid level gauges 7a and 7b. When a liquid level difference exists between the two tanks 1a and 1b, the operator issues an operating command to the central control terminal 25 via the control panel 18. This command determines the oil flow direction within the detection system A and controls the channel selection of the three-way solenoid valves I3a, 3b, and II6, as well as the motor rotation direction of the product transfer pump, thereby transferring oil from the tank with the higher level to the tank with the lower level. During this process, the central control terminal 25 monitors the liquid level difference between the two tanks, as well as the temperature, pressure, and flow signals output by the temperature sensor 5a, pressure transmitter 5b, and flowmeter 5c in the integrated circuit 5, in real time. These signals are then transmitted to the control panel 18 for real-time display. When the liquid level difference reaches zero, the control terminal 25 issues a command to stop the product, and the three-way solenoid valves I3a, 3b, and II6 return to their original positions.

[0027] When a level difference between tanks 1a and 1b doesn't exist and a manual level difference condition needs to be established, the operator sets the desired level difference via control panel 18. This is then transmitted to central control terminal 25, which issues a command. This command determines the direction of oil delivery in tank oil delivery system B, controls the channel selection of three-way solenoid valves III 9a and 9b, and controls the operation of electric pump 10, thereby delivering oil between tanks 1a and 1b. During this process, the central control terminal monitors the level difference signal between the two tanks in real time. When the level difference reaches the set value, control terminal 25 issues a command to stop electric pump 10 and return three-way solenoid valves III 9a and 9b to their original positions.

[0028] The testing system A comprises two identical fuel tanks 1a and 1b. The tank outlets 19a and 19b are connected to oil filters 2a and 2b, respectively, and port 1 of three-way solenoid valves I3a and 3b. Port 3 of three-way solenoid valves I3a and 3b is connected to quick-release plugs 4a and 4b, respectively. During product testing, quick-release plug 4a is connected to the product's left external port, and quick-release plug 4b is connected to the product's right external port. Port 2 of three-way solenoid valves I3a and 3b is connected in series with manifold block 5 and port 1 of three-way solenoid valve II6. Ports II and III of three-way solenoid valve II6 are connected to oil return ports I20a and 20b of fuel tanks 1a and 1b, respectively.

[0029] The oil inlet 23 of the manifold 5 is connected in series with a temperature sensor 5a, a pressure transmitter 5b, a flowmeter 5c, a throttle valve 5d, and an oil outlet II 24. Adjusting the opening of the throttle valve 5d controls the product transfer pump's outlet flow rate within the required technical parameters. The temperature sensor 5a and pressure transmitter 5b are used to detect the outlet temperature and pressure of the product transfer pump during operation. The flowmeter 5c, throttle valve 5d, and safety valve 5e are connected in parallel. If abnormal conditions such as the throttle valve 5d being accidentally closed or the product outlet pipeline being blocked could cause a sudden increase in product outlet pressure, the safety valve 5e can automatically relieve the pressure, ensuring product and system safety.

[0030] The fuel tank oil transfer system B includes three-way solenoid valves III 9a and 9b, an electric pump 10, an oil filter 11, and connecting pipelines. The pipelines connecting the fuel tank oil transfer system to the oil outlets I 21a and 21b and oil return ports II 22a and 22b of the fuel tanks 1a and 1b, respectively, utilize quick-release plugs 12a, 12b, 12c, and 12d. Before the equipment is used, the fuel tank oil transfer system only needs to be connected to the fuel tanks via the quick-release plugs. When the equipment is not in use, the fuel tank oil transfer system can be stored separately in the suitcase, reducing the overall size of the suitcase.

[0031] The specific implementation steps of the present invention are as follows:

[0032] When the oil levels in tanks 1a and 1b differ, the product transfer pump is activated. Central control terminal 25, using the received level information from level gauges 7a and 7b, automatically controls the on / off switching of three-way solenoid valves I 3a, 3b, and 6 in the detection system, as well as the direction of the product transfer pump. This transfers oil from the tank with the higher level to the tank with the lower level, thereby balancing the oil levels in the two tanks. Simultaneously, signals from temperature sensor 5a, pressure transmitter 5b, and flowmeter 5c in detection system A are transmitted to central control terminal 25 for recording and real-time display on control panel 18.

[0033] For example, when the liquid level of tank 1a is higher than that of tank 1b, Figure 3As shown, the product transfer pump motor rotates left, the left external interface of the product is the oil inlet, and the right external interface is the oil outlet, which can transfer the oil in the oil tank 1a to the oil tank 1b. The oil transmission process of the detection system A is as follows: when the product is working, the oil is sucked out from the oil suction port 19a of the oil tank 1a, filtered through the oil filter 2a and reaches the Ⅰ-Ⅲ passage of the three-way solenoid valve Ⅰ3a (at this time, port Ⅰ and port Ⅲ of the three-way solenoid valve Ⅰ3a are connected, and port Ⅱ is closed), the oil enters the product through the quick-release joint 4a and the left oil inlet, and the pressurized oil of the product passes through the right oil outlet, the quick-release joint 4b, and the Ⅲ-Ⅱ passage of the three-way solenoid valve Ⅰ3b (at this time, port Ⅲ and port Ⅱ of the three-way solenoid valve Ⅰ3b are connected, and port Ⅰ is closed), the oil passes through the integrated block 5 and the Ⅰ-Ⅲ passage of the three-way solenoid valve Ⅱ6 (at this time, port Ⅰ and port Ⅲ of the three-way solenoid valve Ⅱ6 are connected, and port Ⅱ is closed), and finally enters the oil tank 1b through the oil return port Ⅰ20b of the oil tank 1b.

[0034] For example, when the liquid level of tank 1a is lower than that of tank 1b, Figure 4 As shown, the product transfer pump motor rotates right, the right external interface of the product is the oil inlet, and the left external interface is the oil outlet, which can transfer the oil in the oil tank 1b to the tank 1a. The oil transmission process of the detection system is as follows: when the product is working, the oil is sucked out from the oil suction port 19b of the oil tank 1b, filtered through the oil filter 2b and reaches the Ⅰ-Ⅲ passage of the three-way solenoid valve Ⅰ3b (at this time, port Ⅰ and port Ⅲ of the three-way solenoid valve Ⅰ3b are connected, and port Ⅱ is closed), the oil enters the product through the quick-release joint 4b and the right oil inlet, and the pressurized oil of the product passes through the left oil outlet, the quick-release joint 4a, and the Ⅲ-Ⅱ passage of the three-way solenoid valve Ⅰ3a (at this time, port Ⅲ and port Ⅱ of the three-way solenoid valve Ⅰ3a are connected, and port Ⅰ is closed), the oil passes through the integrated block 5 and the Ⅰ-Ⅱ passage of the three-way solenoid valve Ⅱ6 (at this time, port Ⅰ and port Ⅱ of the three-way solenoid valve Ⅱ6 are connected, and port Ⅲ is closed), and finally enters the oil tank 1a through the oil return port Ⅰ20a of the oil tank 1a.

[0035] When the oil levels in the two tanks are in a balanced state, the central control terminal 25 can also control the on and off of the three-way solenoid valves III9a and 9b of the tank oil transmission system B, start the electric pump 10, and transfer the oil from one tank to the other tank, so that the liquid levels of the two tanks produce any required height difference, creating an unbalanced condition.

[0036] For example, when the oil in the oil tank 1a needs to be transferred to the oil tank 1b, Figure 5As shown, the oil passes through the oil outlet Ⅰ21a in sequence through the quick-release plug 12a, the Ⅰ-Ⅱ passage of the three-way solenoid valve Ⅲ9a (at this time, port Ⅰ and port Ⅱ of the three-way solenoid valve Ⅲ9a are connected, and port Ⅲ is closed), the electric pump, the oil filter, the Ⅰ-Ⅲ passage of the three-way solenoid valve Ⅲ9b (at this time, port Ⅰ and port Ⅲ of the three-way solenoid valve Ⅲ9b are connected, and port Ⅱ is closed), the quick-release plug 12d, and finally enters the oil tank 1b through the oil return port Ⅱ22b.

[0037] For example, when the oil in the oil tank 1b needs to be transferred to the oil tank 1a, Figure 6 As shown, the oil passes through the oil outlet Ⅰ21b in sequence through the quick-release plug 12b, the Ⅰ-Ⅲ passage of the three-way solenoid valve Ⅲ9a (at this time, port Ⅰ and port Ⅲ of the three-way solenoid valve Ⅲ9a are connected, and port Ⅱ is closed), the electric pump, the oil filter, the Ⅰ-Ⅱ passage of the three-way solenoid valve Ⅲ9b (at this time, port Ⅰ and port Ⅱ of the three-way solenoid valve Ⅲ9b are connected, and port Ⅲ is closed), the quick-release plug 12c, and finally enters the oil tank 1a through the oil return port Ⅱ22a.

[0038] The above specific implementation methods or cases are only used to explain the technical solutions of the present invention and are not intended to limit the present application. Any parts not described in detail are regarded as conventional technical means or common knowledge in the field. It can be understood by ordinary technicians in this field that: based on the design concept of the present application, it should be possible to adaptively modify the technical solutions recorded in the aforementioned implementation methods, or replace some or all of the technical features therein with equivalents. These modifications, equivalent replacements, and adaptively improved technical solutions do not deviate from the technical essence of the present invention and should all be covered within the scope of protection of the present application.

Claims

1. A portable two-way transfer pump detection device, characterized in that: The utility model comprises a trolley case, in which a detection system and a fuel tank oil transmission system are fixed, an external operating table is arranged on the top of the trolley case, on which a quick-release plug connected with the inlet and outlet of the product transfer pump is arranged, an electrical box is installed on the upper right side of the trolley case, a central control terminal is arranged in the electrical box, and a control panel is arranged outside the electrical box, on which test items can be selected, and parameter information such as the fuel tank liquid level, the pressure, flow rate and temperature of the product outlet can be displayed; the detection system controls the on-off of the three-way solenoid valve at the left and right connection ports of the product and the system oil return through the central control terminal, so as to switch the direction of the product oil transmission and the oil supply and return functions of the two fuel tanks, which can meet the requirements of the two-way oil transmission test and realize the oil level balancing function of the fuel tank; the fuel tank oil transmission system controls the on-off of the three-way solenoid valve through the central control terminal, so as to switch the oil supply and return functions of the two fuel tanks, and transports the oil of the supply tank to the return tank through an electric pump, so that the oil levels of the two fuel tanks are not the same, and the unbalanced condition of the two fuel tanks is manually created to simulate the unbalanced state of the aircraft fuel tank when working.

2. A portable two-way transfer pump detection device as claimed in claim 1, characterized in that: The oil tank oil transmission system is respectively provided with three-way solenoid valves at the oil outlet and the oil return port of the oil tank. When the liquid level heights of the two tanks are the same, the supply and return functions of the two tanks can be freely switched through the control of the central control end. The oil in the supply tank is transported to the return tank through an electric pump, so that the oil levels of the two tanks are different, and the unbalanced condition of the two tanks is manually created to simulate the unbalanced state of the aircraft tank when working.

3. A portable two-way transfer pump detection device as claimed in claim 2, characterized in that: The oil tank oil transmission system includes left and right oil tanks, left and right three-way valves, and an oil return passage; an oil suction port is arranged at the bottom of the left and right oil tanks, which is connected to port I of the left and right three-way valves through a pipeline, and ports III of the left and right three-way valves are respectively connected to the inlet and outlet of the product transfer pump through pipelines; ports II of the left and right three-way valves are respectively connected to the left and right oil tanks through the oil return passage.

4. A portable two-way transfer pump detection device as claimed in claim 3, characterized in that: The oil return passage includes a flow meter, a throttle valve, and a three-way valve A; the inlet of the oil return passage is respectively connected to the II ports of the left and right three-way valves, and the inlet of the oil return passage is connected to the three-way valve A after being connected in series with the flow meter and the throttle valve through a pipeline. The three-way valve A transports the return oil to the left and right oil tanks respectively.

5. A portable two-way transfer pump detection device as claimed in claim 4, characterized in that: A safety valve is also connected in parallel between the flow meter inlet and the three-way valve A inlet; a pressure transmitter and a temperature sensor are arranged at the inlet of the return oil passage.

6. A portable two-way transfer pump detection device as claimed in claim 2, characterized in that: The oil return passage adopts an integrated design, and the flow meter, pressure transmitter, temperature sensor, throttle valve and safety valve installed in the oil return pipeline are integrated and installed in a customized integrated block.

7. A portable two-way transfer pump detection device as claimed in claim 1, characterized in that: The detection system is equipped with three-way solenoid valves at the left and right connection ports of the product and the system oil return port. The direction of oil transmission of the product and the supply and return oil functions of the two oil tanks can be freely switched through the control of the central control end. It can not only meet the needs of two-way oil transmission test, but also ensure that a set of flow meters, pressure transmitters and temperature sensors installed in the system always monitor the product outlet direction data, and can also realize the function of balancing the oil level in the oil tank.

8. A portable two-way transfer pump detection device as claimed in claim 7, characterized in that: The detection system includes: a three-way valve B, a three-way valve C, and an electric pump; ports II and III of the three-way valve B are respectively connected to two oil return ports of the left and right oil tanks; port I of the three-way valve B is connected to the electric pump outlet, the electric pump inlet is connected to port I of the three-way valve C, and ports II and III of the three-way valve C are respectively connected to the two oil outlets of the left and right oil tanks.

9. A portable two-way transfer pump detection device as claimed in claim 1, characterized in that: The pipeline connecting the detection system and the product inlet and outlet is set with a quick-release plug.

10. A portable two-way transfer pump detection device as claimed in claim 1, characterized in that: The oil transfer system of the oil tank and the pipelines connected to the oil outlet and the oil return port of the oil tank are all set with quick-release plugs. It only needs to connect the oil transfer system to the oil tank through the quick-release plug before the equipment is used.

Images