Real-time flow rate testing tool for ultrahigh pressure pump

Abstract

The utility model discloses a kind of real-time flow rate test tool of superhigh pressure pump, adopt integrated design, flow control module, metering oil return module, pressure acquisition module and test module are connected to form closed loop by test oil circuit in main pump body, two kinds of working modes are switched by flow control module, to integrate pressure test and flow rate test dual function under single oil circuit, system efficiency is greatly improved;Parallel pressure transmitter and flow sensor are connected through single oil circuit, avoid the error accumulation caused by multiple equipment series connection, realize the real-time accurate measurement of pressure-flow rate, adopt pilot type overflow valve and closed-loop control strategy, ensure that pressure regulation is fast and stable under high pressure, support full-condition pressure scanning.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic equipment technology and relates to a real-time flow rate testing fixture for ultra-high pressure pumps. Background Technology

[0002] Currently, high-pressure pump performance testing typically employs a split-system testing approach. This involves measuring the pump's output pressure and flow rate separately using independent pressure gauges and flow meters. Pressure testing utilizes mechanical pressure gauges, while flow testing requires additional turbine or gear flow meters connected in series. This results in numerous connection points and a complex structure for the overall testing system. The series connection of multiple devices leads to accumulated pressure loss and flow measurement deviations, affecting data accuracy. Furthermore, the mechanical instruments used have slow response times, making it difficult to capture the transient pressure-flow characteristics of the high-pressure pump. In addition, current testing methods generally rely on manual adjustment and recording of system back pressure using relief valves, requiring repeated adjustments and waiting for system stabilization, which prevents the rapid scanning of PQ curves across the entire pressure range. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a real-time flow rate testing fixture for ultra-high pressure pumps.

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

[0005] A real-time flow rate testing fixture for an ultra-high pressure pump includes a main pump body and a flow control module, a metering return oil module, a pressure acquisition module, and a testing module respectively connected to the main pump body. The main pump body is provided with a testing oil circuit. The metering return oil module and the testing module are connected in series in the testing oil circuit to form a closed loop. The flow control module is set at a set position in the testing oil circuit to regulate the flow of the testing oil circuit. The pressure acquisition module is set in the testing oil circuit between the testing module and the flow control module.

[0006] Furthermore, the metering return oil module includes an electromagnetic flow sensor, a return oil pipe, and a first interface and a second interface disposed on the main pump body. The first interface and the second interface are respectively connected to the test oil circuit. One end of the return oil pipe is connected to the outlet of the electromagnetic flow sensor, and the other end is connected to the second interface. The inlet of the electromagnetic flow sensor is connected to the first interface.

[0007] Furthermore, the test module includes an oil inlet and an oil outlet for connecting to the oil inlet and outlet ends of the high-pressure pump under test, respectively. The oil inlet and the oil outlet are located in the main pump body and are respectively connected to the test oil circuit.

[0008] Furthermore, the flow control module includes a shut-off valve and a relief valve, which are sequentially connected to the test oil circuit along the direction from the oil inlet toward the first interface.

[0009] Furthermore, the pressure acquisition module includes a hydraulic pressure transmitter and a branch line. One end of the branch line is connected to the test oil circuit between the oil inlet and the shut-off valve, and the other end forms a test interface on the main pump body for connecting the hydraulic pressure transmitter.

[0010] Furthermore, the hydraulic pressure transmitter employs a diaphragm-isolated sensor.

[0011] In summary, the advantages of this utility model are as follows:

[0012] This utility model adopts an integrated design, connecting the flow control module, metering return oil module, pressure acquisition module, and testing module through a test oil circuit within the main pump body to form a closed-loop circuit. The flow control module switches between two operating modes to integrate pressure testing and flow rate testing functions under a single oil circuit, significantly improving system efficiency. By connecting a pressure transmitter and a flow sensor in parallel through a single oil circuit, the accumulation of errors caused by multiple devices connected in series is avoided, achieving real-time and accurate pressure-flow rate measurement. A pilot-operated relief valve and closed-loop control strategy are adopted to ensure rapid and stable pressure regulation under high pressure, supporting pressure scanning under all operating conditions. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the test fixture of this utility model.

[0014] Figure 2 for Figure 1 Hydraulic schematic diagram.

[0015] The diagram shows: 1. Main pump body; 11. Test oil circuit; 12. Oil inlet; 13. Oil outlet; 14. First interface; 15. Second interface; 16. Branch circuit; 17. Test interface; 2. Hydraulic pressure transmitter; 3. Shut-off valve; 4. Relief valve; 5. Electromagnetic flow sensor; 6. Return oil pipe; 7. High-pressure pump to be tested. Detailed Implementation

[0016] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0017] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0018] In this embodiment of the invention, all directional indicators (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0019] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of this utility model may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0020] This utility model provides a real-time flow rate testing fixture for ultra-high pressure pumps, used to perform synchronous testing of the output pressure and flow rate performance of high pressure pumps.

[0021] The test fixture includes a main pump body 1, a pressure acquisition module, a flow control module, a metering return oil module, and a test module. A test oil circuit 11 with a set path is formed inside the main pump body 1. The pressure acquisition module, flow control module, and metering return oil module are respectively set at set positions on the main pump body 1 and connected to the test oil circuit 11. The high-pressure pump 7 to be tested is set in the test module and connected to the test oil circuit 11. When the high-pressure pump 7 to be tested is performing test work, it outputs to the test oil circuit 11 so that the pressure acquisition module and the metering return oil module can obtain pressure and flow rate parameters.

[0022] The test oil circuit 11 forms an oil inlet 12 and an oil outlet 13 on one side of the main pump body 1. The oil inlet and outlet ends of the high-pressure pump 7 to be tested are connected to the oil inlet 12 and the oil outlet 13 respectively, forming a pump oil circulation when the high-pressure pump 7 to be tested is working.

[0023] The metering return oil module includes an electromagnetic flow sensor 5 and a return oil pipe 6. One end of the return oil pipe 6 is connected to the outlet of the electromagnetic flow sensor 5. The test oil circuit 11 forms a first interface 14 and a second interface 15 on the other side of the main pump body 1 for setting the metering return oil module. The inlet of the electromagnetic flow sensor 5 is connected to and communicates with the first interface 14, and the other end of the return oil pipe 6 is connected to and communicates with the second interface 15. The first interface 14 is connected to the inlet 12 along one direction of the test oil circuit 11, and the second interface 15 is connected to the outlet 13 along the other direction of the test oil circuit 11, so that the metering return oil module and the test oil circuit 11 form a passage, thereby connecting the test module, the test oil circuit 11, and the metering return oil module in series to form a closed loop.

[0024] The flow control module includes a shut-off valve 3 and an overflow valve 4. The shut-off valve 3 and the overflow valve 4 are respectively set at two preset positions on the test oil circuit 11 between the oil inlet 12 and the first interface 14. The shut-off valve 3 and the overflow valve 4 are located at the near end and far end of the oil inlet 12, respectively. The shut-off valve 3 is used to cut off and close the test oil circuit 11 to form a sealed cavity at the position between the oil inlet 12 and the shut-off valve 3 on the test oil circuit 11. The overflow valve 4 is used to adjust the back pressure in the test oil circuit 11.

[0025] Furthermore, a branch line 16 is also provided inside the main pump body 1. One end of the branch line 16 is connected to the test oil line 11 between the oil inlet 12 and the shut-off valve 3, and the other end forms a test interface 17 outside the main pump body 1. The pressure acquisition module includes a hydraulic pressure transmitter 2, which is connected to and connected to the test interface 17.

[0026] Preferably, the hydraulic pressure transmitter 2 adopts a diaphragm-isolated sensor with a high pressure resistance of 150MPa to adapt to the testing conditions of high-power high-pressure pumps.

[0027] When the high-pressure pump 7 under test is subjected to test conditions, the dual-function test mode of pressure and flow rate can be quickly switched by switching the state of the shut-off valve 3. Specifically, when the shut-off valve 3 is closed, the test oil passage 11 between the shut-off valve 3 and the oil inlet 12 forms a sealed cavity. When the high-pressure pump 7 under test pumps oil into the sealed cavity through the oil inlet 12, the hydraulic pressure transmitter 2 can directly read the maximum no-load pressure of the high-pressure pump 7 under test through the branch line 16.

[0028] When the shut-off valve 3 is opened, the oil pumped in by the high-pressure pump 7 under test passes through the oil inlet 12, shut-off valve 3, relief valve 4, electromagnetic flow sensor 5, return oil pipe 6, and oil outlet 13 in sequence along the test oil circuit 11, forming a complete circuit. The back pressure of the circuit can be directly changed by adjusting the relief valve 4, so that while the hydraulic pressure transmitter 2 displays the pressure value in real time, the electromagnetic flow sensor 5 outputs the corresponding real-time flow rate value for synchronous data acquisition.

[0029] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort should fall within the protection scope of this utility model.

Claims

1. A real-time flow rate testing fixture for an ultra-high pressure pump, characterized in that, The system includes a main pump body and a flow control module, a metering return oil module, a pressure acquisition module, and a test module, all connected to the main pump body. The main pump body has a test oil circuit. The metering return oil module and the test module are connected in series in the test oil circuit to form a closed loop. The flow control module is located at a set position on the test oil circuit to regulate the flow of the test oil circuit. The pressure acquisition module is located in the test oil circuit between the test module and the flow control module.

2. The real-time flow velocity testing fixture for an ultra-high pressure pump according to claim 1, characterized in that, The metering return oil module includes an electromagnetic flow sensor, a return oil pipe, and a first interface and a second interface disposed on the main pump body. The first interface and the second interface are respectively connected to the test oil circuit. One end of the return oil pipe is connected to the outlet of the electromagnetic flow sensor, and the other end is connected to the second interface. The inlet of the electromagnetic flow sensor is connected to the first interface.

3. The real-time flow velocity testing fixture for an ultra-high pressure pump according to claim 1, characterized in that, The test module includes an oil inlet and an oil outlet for connecting to the oil inlet and outlet ends of the high-pressure pump under test, respectively. The oil inlet and the oil outlet are located in the main pump body and are respectively connected to the test oil circuit.

4. The real-time flow rate testing fixture for an ultra-high pressure pump according to claim 3, characterized in that, The flow control module includes a shut-off valve and a relief valve, which are sequentially connected to the test oil circuit along the direction from the oil inlet toward the first interface.

5. The real-time flow rate testing fixture for an ultra-high pressure pump according to claim 4, characterized in that, The pressure acquisition module includes a hydraulic pressure transmitter and a branch line. One end of the branch line is connected to the test oil circuit between the oil inlet and the shut-off valve, and the other end forms a test interface on the main pump body for connecting the hydraulic pressure transmitter.

6. The real-time flow velocity testing fixture for an ultra-high pressure pump according to claim 5, characterized in that, The hydraulic pressure transmitter uses a diaphragm-isolated sensor.

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