A portable bidirectional transfer pump testing apparatus

Abstract

The present application belongs to the technical field of portable detection equipment, and particularly relates to a portable bidirectional transfer pump detection equipment. The portable bidirectional transfer pump detection equipment comprises a trolley case, a detection system and an oil tank oil transmission system are arranged in the trolley case, an operation table is arranged on the top of the trolley case, a quick-release plug connected with the inlet and outlet of the product transfer pump is arranged on the operation table, an electrical box is arranged at the upper right of the trolley case, a central control terminal is arranged in the electrical box, and a control panel is arranged on the electrical box. The detection system controls the on-off of the three-way electromagnetic valve of the left and right connection ports and the system oil return port through the central control terminal, so as to switch the direction of the product transmission oil and the oil supply and return functions of the two oil tanks, which can meet the oil bidirectional transmission test requirements and realize the balance of the oil level of the oil tank. The oil tank oil transmission system controls the on-off of the three-way electromagnetic valve through the central control terminal, so as to switch the oil supply and return functions of the two oil tanks, the oil in the oil supply tank is transmitted to the oil return tank through the electric pump, the oil levels of the two oil tanks are inconsistent, the imbalance of the two oil tanks is manually created, and the imbalance state of the aircraft oil tank during work is simulated. The detection equipment is light, convenient and portable, has complete functions, can simulate the working state of the transfer pump in the field, can perform bidirectional transmission oil, balance of the oil surface performance test of the two groups of oil tanks, and can detect the temperature, flow and pressure of any outlet of the product.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hydraulic pump test, and particularly relates to a portable bidirectional transfer pump detection equipment. BACKGROUND

[0002] A certain type of bidirectional transfer pump is used for an aircraft fuel system and balances the oil levels of two groups of oil tanks. The product is now required to be monitored on site, to check the bidirectional transmission of oil liquid performance, the balancing of the oil level of the two groups of oil tanks, and to detect whether the product outlet flow and pressure meet the requirements. The original detection equipment occupies 4 square meters and cannot be moved, which cannot meet the field detection requirements. Therefore, a portable detection equipment is needed, which can be easily carried to the field by a single person, and can simulate the actual balancing of the oil level of the two oil tanks of the transfer pump, to ensure that the product performance is qualified and the work is reliable. SUMMARY

[0003] The application aims to provide a portable bidirectional transfer pump detection equipment, which can be carried and operated by a single person, can simulate the working state of the transfer pump on site, and can perform bidirectional transmission of oil liquid, balancing of the oil level of the two groups of oil tanks, and detection of the temperature, flow and pressure of any outlet of the product.

[0004] The technical scheme of the application is as follows: in order to achieve the above-mentioned application purposes, the application provides a portable bidirectional transfer pump detection equipment, which comprises a trolley case, a detection system and an oil tank oil liquid transmission system are fixed in the trolley case, an operation table is arranged on the top of the trolley case, a quick release plug connected with the inlet and outlet of the product transfer pump is arranged on the operation table, an electrical box is arranged at the upper right of the trolley case, a central control terminal is arranged in the electrical box, a control panel is arranged on the outside of the electrical box, and the control panel can select test items and display parameters such as the oil level of the oil tank, the pressure, flow and temperature of the outlet of the product.

[0005] Further, three-way electromagnetic valves are arranged at the oil outlet and oil return port of the oil tank, the oil supply and return functions of the two oil tanks can be freely switched by the central control terminal when the liquid levels of the two oil tanks are the same, the oil liquid in the oil supply tank is delivered to the oil return tank by the electric pump, the liquid levels of the two oil tanks are made inconsistent, and the unbalanced conditions of the two oil tanks are manually created to simulate the unbalanced state of the aircraft oil tank during work.

[0006] Further, three-way electromagnetic valves are arranged at the left and right connection ports of the product and the system oil return port, the direction of the oil liquid transmitted by the product and the oil supply and return functions of the two oil tanks can be freely switched by the central control terminal, the bidirectional transmission test of the oil liquid can be met, 1 set of flow meter, pressure transmitter and temperature sensor arranged in the system can always monitor the data of the outlet direction of the product, and the balancing of the oil level of the oil tank can be realized.

[0007] Further, the oil tank oil liquid transmission system comprises left and right oil tanks, left and right three-way valves, and an oil return passage; the bottom of each of the left and right oil tanks is provided with an oil suction port, which is connected to port I of the left or right three-way valve through a pipeline, and port III of the left or right three-way valve is connected to the inlet and outlet of a product transfer pump through a pipeline, respectively; port II of the left or right three-way valve is connected to the left or right oil tank through an oil return passage, respectively.

[0008] Further, the oil return passage comprises a flow meter, a throttle valve, and a three-way valve A; the inlet of the oil return passage is connected to port II of the left or right three-way valve, and the inlet of the oil return passage is connected to the three-way valve A in series through a pipeline after the flow meter and the throttle valve; the three-way valve A delivers the oil return to the left and right oil tanks, respectively.

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

[0010] Further, the oil return passage is designed in an integrated manner; the flow meter, the pressure transmitter, the temperature sensor, the throttle valve, and the safety valve arranged in the oil return pipeline are installed in a customized integrated block, so that the structure is compact, the requirement of reducing the size of the equipment as much as possible is met, and the pressure loss of the pipeline is reduced.

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

[0012] Further, the pipeline connected to the product inlet and outlet is provided with a quick-release plug, so that the product can be conveniently and quickly installed and removed on the test equipment.

[0013] Further, the pipeline connected to the oil outlet port and the oil return port of the oil tank is provided with a quick-release plug, so that the oil tank oil liquid transmission system can be connected to the oil tank through the quick-release plug before the equipment is used, and the oil tank oil liquid transmission system can be stored separately when the equipment is not in use, thereby reducing the size requirement of the entire draw-bar box.

[0014] Further, the size of the draw-bar box is about 29 inches, the original detection equipment occupying an area of 4 square meters and being immovable is integrated into the draw-bar box, universal wheels with brakes are installed on the bottom plate of the draw-bar box, and the weight of the entire set of equipment does not exceed 60 kg in the state that the oil tank is not filled with fuel, so that the equipment can be easily carried and transported to the field.

[0015] Beneficial technical effects: the application switches the oil supply and return functions of the two oil tanks by controlling the on-off of the three-way electromagnetic valve of the central control end, and the oil in the oil supply tank is delivered to the oil return tank by the electric pump, so that the oil levels of the two oil tanks are inconsistent, the imbalance condition of the two oil tanks is manually created, and the imbalance state of the oil tank during the working of the airplane is simulated. The detection equipment is light, convenient, easy to carry and transport, and has complete functions, and can simulate the working state of the transfer pump in the field, and perform the oil liquid bidirectional transmission, balance the oil surface performance test of the two groups of oil tanks, and detect the outlet temperature, flow and pressure of the product at any time. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a device structure schematic diagram;

[0017] Figure 2 It is a device bench structure schematic diagram;

[0018] Figure 3 It is a schematic diagram of the detection system delivering the oil liquid of the oil tank 1a to the oil tank 1b;

[0019] Figure 4 It is a schematic diagram of the detection system delivering the oil liquid of the oil tank 1b to the oil tank 1a;

[0020] Figure 5 It is a schematic diagram of the oil tank oil liquid transmission system delivering the oil liquid of the oil tank 1a to the oil tank 1b;

[0021] Figure 6 It is a schematic diagram of the oil tank oil liquid transmission system delivering the oil liquid of the oil tank 1b to the oil tank 1a;

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

[0023] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0024] The embodiment of the present application provides a portable bidirectional transfer pump detection equipment, which comprises a trolley case 13, a detection system A and an oil tank oil transmission system B are arranged in the trolley case 13, an operation table 16 is arranged on the top of the trolley case 13, quick-release plugs 4a and 4b connected with left and right external interfaces of products are arranged on the operation table 16, an electrical box 17 is arranged at the upper right of the trolley case, a central control terminal 25 is arranged in the electrical box, a control panel 18 is arranged outside the electrical box, the control panel 18 is designed as a touch screen, test items can be selected, and the oil level of the oil tank, the pressure, the flow and the temperature of the product outlet and the like can be displayed.

[0025] The trolley case is about 29 inches in size, comprising a box body 13, universal wheels 14 with brakes are arranged on the bottom plate of the box body 13, a trolley 15 is arranged on the back of the box body, and the trolley is convenient for being pulled by a single person. When the equipment is in a non-test state, the oil in the oil tanks 1a and 1b can be emptied through oil discharge ball valves 8a and 8b, the dry weight of the whole set of equipment is not more than 60 kg, and the whole set of equipment can be easily carried and transported to the field without other auxiliary measures.

[0026] The central control terminal 25 automatically receives the liquid level signals of the liquid level meters 7a and 7b. When there is a liquid level difference between the two oil tanks 1a and 1b, the operator sends a working instruction to the central control terminal 25 through the control panel 18, determines the oil liquid conveying direction in the detection system A, controls the channel selection of the three-way electromagnetic valves I 3a and 3b and the three-way electromagnetic valve II 6 and the motor rotation direction when the product transfer pump works, so that the oil liquid in the oil tank with a higher oil level is conveyed to the oil tank with a lower oil level. In this process, the central control terminal 25 detects the liquid level difference signals of the two oil tanks and the temperature, pressure and flow signals output by the temperature sensor 5a, the pressure transmitter 5b and the flow meter 5c in the integrated block 5 in real time, and transmits various signals to the control panel 18 to display real-time data. When the liquid level difference is 0, the terminal 25 sends an instruction to make the product stop working, and the three-way electromagnetic valves I 3a and 3b and 6 return to the original position.

[0027] When there is no liquid level difference between the two oil tanks 1a and 1b, the operator sets the required liquid level difference value through the control panel 18 and transmits the value to the central control terminal 25 to send a working instruction, determines the oil liquid conveying direction in the oil tank oil transmission system B, controls the channel selection of the three-way electromagnetic valves III 9a and 9b and the electric pump 10, so as to convey the oil liquid in the two oil tanks 1a and 1b. In this process, the central control terminal detects the liquid level difference signals of the two oil tanks in real time, and when the liquid level difference reaches the set value, the terminal 25 sends an instruction to make the electric pump 10 stop working, and the three-way electromagnetic valves III 9a and 9b return to the original position.

[0028] The detection system A comprises two identical oil tanks 1a, 1b, the oil outlets 19a, 19b of the two oil tanks are connected with the oil filters 2a, 2b and the No. I ports of the three-way electromagnetic valves I 3a, 3b respectively, the No. III ports of the three-way electromagnetic valves I 3a, 3b are connected with the quick-disconnecting plugs 4a, 4b respectively, the quick-disconnecting plug 4a is connected with the left external interface of the product during product test, and the quick-disconnecting plug 4b is connected with the right external interface of the product. The No. II ports of the three-way electromagnetic valves I 3a, 3b are connected with the integrated block 5 and the No. I port of the three-way electromagnetic valve II 6 in series, and the No. II ports and No. III ports of the three-way electromagnetic valve II 6 are connected with the oil return ports I 20a, 20b of the oil tanks 1a, 1b respectively.

[0029] The oil inlet 23 of the integrated block 5 is connected with the temperature sensor 5a, the pressure transmitter 5b, the flow meter 5c, the throttle valve 5d and the oil outlet II 24 in series, the outlet flow of the product transfer pump is controlled in the required technical parameter range by adjusting the opening degree of the throttle valve 5d, and the temperature sensor 5a and the pressure transmitter 5b are used for detecting the temperature and pressure of the outlet of the product transfer pump during work. The flow meter 5c, the throttle valve 5d and the safety valve 5e are connected in parallel, the safety valve 5e can automatically release pressure to ensure the safety of the product and the system when the outlet pressure of the product is increased sharply due to abnormal conditions such as misoperation of the throttle valve 5d and blockage of the product outlet pipeline.

[0030] The oil tank oil transmission system B comprises the three-way electromagnetic valves III 9a, 9b, the electric pump 10, the oil filter 11 and the connecting pipeline. The pipelines connected with the oil outlets I 21a, 21b and the oil return ports II 22a, 22b of the oil tanks 1a, 1b of the oil tank oil transmission system are respectively provided with the quick-disconnecting plugs 12a, 12b, 12c, 12d, so that the oil tank oil transmission system can be connected with the oil tanks through the quick-disconnecting plugs before the equipment is used, and the oil tank oil transmission system can be stored in the draw-bar box alone when the equipment is not used, thereby reducing the volume requirement of the draw-bar box.

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

[0032] When the oil levels of the two oil tanks 1a, 1b are different, the product transfer pump is started, the three-way electromagnetic valves I 3a, 3b and II 6 in the detection system are automatically controlled and the direction of the product transfer pump is reversed by the central control end 25 through the received liquid level information of the liquid level meters 7a, 7b, so that the oil tank with higher oil level is used to supply oil to the oil tank with lower oil level, thereby achieving the function of balancing the oil levels of the two oil tanks. Meanwhile, the signals of the temperature sensor 5a, the pressure transmitter 5b and the flow meter 5c in the detection system A are also transmitted to the central control end 25 for recording and real-time display through the control panel 18.

[0033] For example, when the oil level of the oil tank 1a is higher than that of the oil tank 1b, the three-way electromagnetic valve I 3a is opened, the three-way electromagnetic valve I 3b is closed, the three-way electromagnetic valve II 6 is opened, and the three-way electromagnetic valve III 9a is closed. 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 liquid passes through the oil outlet I 21a, then through the quick-disconnect plug 12a, the I-II passage of the three-way electromagnetic valve III 9a (at this time, the No. I port and the No. II port of the three-way electromagnetic valve III 9a are connected, and the No. III port is closed), the electric pump, the oil filter, the I-III passage of the three-way electromagnetic valve III 9b (at this time, the No. I port and the No. III port of the three-way electromagnetic valve III 9b are connected, and the No. II port is closed), the quick-disconnect plug 12d, and finally enters the oil tank 1b through the oil return port II 22b.

[0037] For example, when it is needed to transfer the oil liquid in the oil tank 1b to the oil tank 1a, as shown in FIG. 2B, Figure 6 As shown, the oil liquid passes through the oil outlet I 21b, then through the quick-disconnect plug 12b, the I-III passage of the three-way electromagnetic valve III 9a (at this time, the No. I port and the No. III port of the three-way electromagnetic valve III 9a are connected, and the No. II port is closed), the electric pump, the oil filter, the I-II passage of the three-way electromagnetic valve III 9b (at this time, the No. I port and the No. II port of the three-way electromagnetic valve III 9b are connected, and the No. III port is closed), the quick-disconnect plug 12c, and finally enters the oil tank 1a through the oil return port II 22a.

[0038] The above specific embodiments or cases are only used to explain and illustrate the technical solutions of the present application, and are not intended to limit the present application. The parts not described in detail are regarded as conventional technical means or common knowledge in the art. It can be understood by those skilled in the art that, based on the design idea of the present application, the technical solutions described in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents. These modified, equivalent, and adapted technical solutions do not deviate from the technical essence of the present application, and should be covered within the protection scope of the present application.

Claims

1. A portable two-way transfer pump detection device, characterized in that: It includes a trolley case, which is equipped with a detection system and a fuel tank oil transfer system. An external operating table is installed on the top of the trolley case, which is equipped with quick-release plugs connected to the inlet and outlet of the product transfer pump. An electrical box is installed in the upper right corner of the trolley case, which is equipped with a central control terminal. A control panel is installed outside the electrical box. Test items can be selected on the control panel, which can display parameter information such as the fuel tank liquid level, pressure, flow rate, and temperature of the product outlet; The detection system includes left and right oil tanks, left and right three-way solenoid valves, and an oil return passage. The left and right oil tanks are provided with oil suction ports at the bottom, which are respectively connected to port I of the left and right three-way solenoid valves through pipelines, and ports III of the left and right three-way solenoid 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 solenoid valves are respectively connected to the left and right oil tanks through oil return passages. The detection system controls the on and 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, thereby switching the direction of oil transmission of the product and the oil supply and return functions of the two oil tanks. This can not only meet the requirements of the two-way oil transmission test, but also realize the function of balancing the oil level in the oil tank. The oil tank oil transmission system includes: a three-way solenoid valve B, a three-way solenoid valve C, and an electric pump; ports II and III of the three-way solenoid valve B are respectively connected to the two oil return ports of the left and right oil tanks; port I of the three-way solenoid valve B is connected to the outlet of the electric pump, and the inlet of the electric pump is connected to port I of the three-way solenoid valve C; ports II and III of the three-way solenoid valve C are respectively connected to the two oil outlets of the left and right oil tanks; The fuel tank oil transmission system controls the on and off of three-way solenoid valves B and C through the central control terminal, thereby switching the supply and return functions of the two fuel tanks. The oil in the supply tank is transported to the return tank through an electric pump, making the oil levels of the two tanks inconsistent, manually creating an unbalanced condition between the two tanks, and simulating the unbalanced state of the aircraft fuel tank when working.

2. A portable two-way transfer pump detection device according to claim 1, characterized in that: The return oil passage includes a flow meter, a throttle valve, and a three-way solenoid valve A; the inlet of the return oil passage is respectively connected to the II port of the left and right three-way solenoid valves, and the inlet of the return oil passage is connected to the three-way solenoid valve A after being connected in series with the flow meter and the throttle valve through a pipeline. The three-way solenoid valve A transports the return oil to the left and right oil tanks respectively.

3. A portable two-way transfer pump detection device according to claim 2, characterized in that: A safety valve is also connected in parallel between the flow meter inlet and the three-way solenoid valve A inlet; a pressure transmitter and a temperature sensor are provided at the inlet of the return oil passage.

4. A portable two-way transfer pump detection device as claimed in claim 3, 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 passage are integrated and installed in a customized integrated block.

5. The portable bidirectional transfer pump detection device according to claim 1, characterized in that: The pipeline connecting the detection system and the product inlet and outlet is set with a quick-release plug.

6. A portable bidirectional transfer pump detection device according to claim 1, characterized in that: The pipelines connecting the oil tank oil transmission system with the oil outlet and oil return port of the oil tank are all set with quick-release plugs. Before using the equipment, the oil tank oil transmission system only needs to be connected to the oil tank through the quick-release plugs.

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