Test device for a plunger pump

Abstract

A test device of a plunger pump comprises an adapter, a liquid outlet pipeline, a liquid return pipeline, a direction control valve, a data collector, a hydraulic pressure regulator and a controller. The adapter is sealingly connected to a liquid inlet end of the plunger pump. One end of the liquid outlet pipeline is connected to the adapter, and the other end of the liquid outlet pipeline extends into an external test liquid. One end of the liquid return pipeline is connected to the adapter, and the other end of the liquid return pipeline extends into the external test liquid. The direction control valve is arranged at the connection between the liquid return pipeline and the adapter. The data collector is arranged in the liquid outlet pipeline to collect the hydraulic pressure value in the liquid outlet pipeline. The hydraulic pressure regulator is arranged in the liquid outlet pipeline to regulate the hydraulic pressure value in the liquid outlet pipeline. The controller is electrically connected to the plunger pump to control the liquid inlet and the liquid return of the plunger pump, and is electrically connected to the hydraulic pressure regulator and the data collector to receive a preset test hydraulic pressure value input by a user to control the hydraulic pressure regulator to regulate the hydraulic pressure value in the liquid outlet pipeline to the preset test hydraulic pressure value. The application realizes automatic testing of the plunger pump under different hydraulic pressures, and improves the testing efficiency.

Description

Technical Field

[0001] This application relates to the technical field of plunger pump testing, and more specifically, to a plunger pump testing apparatus. Background Technology

[0002] A plunger pump is a positive displacement pump that uses the reciprocating linear motion of a plunger within a cylinder to change the volume of a sealed space, thereby drawing in and discharging fluid (such as hydraulic oil). A plunger pump is an energy conversion device that converts the mechanical energy of a prime mover into the pressure energy of a fluid. The core working process of a plunger pump is divided into a return phase (the plunger moves outward, increasing the volume and creating a vacuum to draw in fluid) and a pumping phase (the plunger pushes inward, decreasing the volume and pressurizing to discharge fluid). In traditional testing methods, the plunger pump is tested by connecting it to a hydraulic test bench.

[0003] The inventors of this application have discovered that the above-mentioned testing process involves manually setting up sensors and manually controlling the start and operation of the plunger pump to conduct the test. The entire testing process is complex and cumbersome, the accuracy of the test data is low, and the labor cost is high and the testing efficiency is low.

[0004] The content in the background section is merely technology known to the public and does not necessarily represent existing technology in this field. Utility Model Content

[0005] This application aims to provide a testing device for a plunger pump to solve at least one of the above-mentioned technical problems.

[0006] According to one aspect of this application, a testing device for a plunger pump is provided, including an adapter, a discharge line, a return line, a directional control valve, a data acquisition unit, a hydraulic regulator, and a controller. The adapter is sealed to the pumping end of the plunger pump. One end of the discharge line is connected to the adapter, and the other end extends into an external test liquid. One end of the return line is connected to the adapter, and the other end extends into an external test liquid. The directional control valve is located at the connection between the return line and the adapter; the directional control valve is closed when the plunger pump is pumping and open when the plunger pump is returning liquid. The data acquisition unit is located in the discharge line to acquire the hydraulic pressure value within the discharge line. The hydraulic regulator is located in the discharge line to adjust the hydraulic pressure value within the discharge line. The controller is electrically connected to the plunger pump and is used to control the pumping and return of the plunger pump. The controller is also electrically connected to the hydraulic regulator and the data acquisition unit to receive a preset test hydraulic pressure value input by a user, and to control the hydraulic regulator to adjust the hydraulic pressure value in the discharge line to reach the preset test hydraulic pressure value.

[0007] According to some embodiments of this application, the controller includes a first controller. The first controller is electrically connected to a hydraulic regulator and a data acquisition unit, and is used to receive a preset test hydraulic value to control the hydraulic regulator to adjust the hydraulic value in the outlet pipeline to reach the preset test hydraulic value.

[0008] According to some embodiments of this application, the controller further includes a second controller and an efficiency calculation module. The second controller is electrically connected to the plunger pump and is used to control the pumping and return fluid of the plunger pump. The second controller is also used to acquire the operating parameters of the plunger pump and a preset test hydraulic value. The efficiency calculation module is electrically connected to the first controller and the second controller and is used to acquire the operating parameters of the plunger pump and calculate the operating efficiency of the plunger pump based on the operating parameters and the preset test hydraulic value.

[0009] According to some embodiments of this application, the testing apparatus for the plunger pump also includes a data acquisition device holder for securing the data acquisition device to the outlet line.

[0010] According to some embodiments of this application, the testing apparatus for the plunger pump also includes a hydraulic regulator holder for securing the hydraulic regulator to the outlet line.

[0011] According to some embodiments of this application, both the liquid outlet line and the liquid return line are pressure-resistant pipes.

[0012] According to some embodiments of this application, an end face seal is also provided at the connection between the return pipeline and the adapter.

[0013] According to some embodiments of this application, the data acquisition device is a hydraulic gauge.

[0014] According to some embodiments of this application, the hydraulic regulator is a pressure regulating valve.

[0015] According to some embodiments of this application, the directional control valve is a one-way valve.

[0016] Beneficial effects

[0017] The plunger pump testing device in this application directly connects to the pumping end of the plunger pump via an adapter, forming a closed-loop automatic testing environment with the outlet and return lines. This avoids the frequent disassembly of pipelines and repeated sensor deployment required in traditional testing methods, reducing test preparation time and thus improving testing efficiency. The directional control valve enables rapid switching between pumping and return operations, solving the problem of low efficiency in manual valve adjustment. The hydraulic regulator's connection to the controller allows for user-preset test hydraulic values, improving pressure stability and reducing test errors compared to manual pressure adjustment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the test apparatus according to an embodiment of this application is shown;

[0020] Figure 2 A schematic diagram of the controller according to an embodiment of this application is shown.

[0021] Explanation of reference numerals in the attached figures:

[0022] Test device 1; adapter 11; liquid outlet line 12; liquid return line 13; directional control valve 14; data acquisition unit 15; hydraulic regulator 16; controller 17; first controller 171; second controller 172; efficiency calculation module 173; data acquisition unit fixing part 18; hydraulic regulator fixing part 19; end face seal 20. Detailed Implementation

[0023] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0024] The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of these specific details, or other methods, components, materials, devices, etc. In these cases, well-known structures, methods, devices, implementations, materials, or operations will not be shown or described in detail.

[0025] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or device.

[0026] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, rather than to describe a specific order.

[0027] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] According to one aspect of this application, a testing apparatus for a plunger pump is provided. Figure 1 A schematic diagram of the test apparatus according to an embodiment of this application is shown.

[0029] According to the example embodiment, such as Figure 1 As shown, the testing device 1 includes an adapter 11, an outlet pipe 12, a return pipe 13, a directional control valve 14, a data acquisition unit 15, a hydraulic regulator 16, and a controller 17. The adapter 11 is sealed to the pumping end of the plunger pump. One end of the outlet pipe 12 is connected to the adapter 11, and the other end extends into the external test liquid. One end of the return pipe 13 is connected to the adapter 11, and the other end extends into the external test liquid.

[0030] For example, adapter 11 is a sealing connection. Exemplarily, this sealing connection is a hydraulic cylinder adapter. Adapter 11 can achieve a sealed connection with the plunger pump through a sealing ring located at the contact point between the hydraulic cylinder adapter and the plunger pump. For example, the outlet line 12 is a line through which test liquid flows in the plunger pump during the pumping process. Exemplarily, the outlet line 12 can be a pressure-resistant pipe. For example, the return line 13 is a line through which external test liquid flows back into the plunger pump during the return process. Exemplarily, the return line 13 can be a pressure-resistant pipe.

[0031] A directional control valve 14 is located at the connection between the return line 13 and the adapter 11. When the plunger pump is pumping fluid, the directional control valve 14 is closed; when the plunger pump is returning fluid, the directional control valve 14 is open. A data acquisition unit 15 is located in the outlet line 12 to acquire the hydraulic pressure value within the outlet line 12. A hydraulic regulator 16 is located in the outlet line 12 to adjust the hydraulic pressure value within the outlet line 12. A controller 17 is electrically connected to the plunger pump and is used to control the pumping and returning fluid. The controller 17 is also electrically connected to the hydraulic regulator 16 and the data acquisition unit 15 to receive a preset test hydraulic pressure value input by the user, and to control the hydraulic regulator 16 to adjust the hydraulic pressure value within the outlet line 12 to reach the preset test hydraulic pressure value.

[0032] For example, directional control valve 14 is a valve body that controls the opening and closing of return line 13. Exemplarily, directional control valve 14 is a check valve. For example, data acquisition device 15 is a data acquisition device that collects parameters of the test liquid in outlet line 12. Exemplarily, data acquisition device 15 is a pressure gauge used to collect the hydraulic pressure value of the test liquid in outlet line 12. For example, controller 17 adjusts the hydraulic pressure value in outlet line 12 by controlling the opening and closing degree of hydraulic regulator 16.

[0033] Through the above embodiments, the plunger pump testing device of this application directly connects to the pumping end of the plunger pump via an adapter, and forms a closed-loop automatic testing environment with the outlet and return pipelines. This avoids the frequent disassembly of pipelines and repeated sensor deployment required in traditional testing methods, reducing test preparation time and thus improving testing efficiency. The directional control valve enables rapid switching between the plunger pump's pumping and return functions, solving the problem of low efficiency in manual valve adjustment. The hydraulic regulator is connected to the controller, enabling the user-preset test hydraulic value. Compared to manual pressure adjustment, this improves pressure stability during the testing process and reduces test errors.

[0034] Figure 2 A schematic diagram of the controller 17 according to an embodiment of this application is shown. According to an example embodiment, such as… Figure 1 and Figure 2 As shown, the controller 17 also includes a first controller 171. The first controller 171 is electrically connected to the hydraulic regulator 16 and the data acquisition unit 15, and is used to receive a preset test hydraulic value so as to control the hydraulic regulator 16 to adjust the hydraulic value in the outlet pipeline 12 to reach the preset test hydraulic value.

[0035] For example, the first controller 171 can acquire the hydraulic pressure value in the outlet pipeline 12 through the data acquisition unit 15. The first controller 171 can adjust the hydraulic pressure value in the outlet pipeline 12 by adjusting the opening and closing degree of the hydraulic regulator 16.

[0036] Through the above embodiments, the testing device of this application adjusts the hydraulic value in the outlet pipeline by controlling the opening and closing degree of the hydraulic regulator through the first controller. This closed-loop adjustment of the hydraulic value avoids excessive fluctuations in the hydraulic value in the outlet pipeline, thereby improving the stability and accuracy of the measurement.

[0037] According to the example embodiment, such as Figure 2As shown, controller 17 also includes a second controller 172 and an efficiency calculation module 173. The second controller 172 is electrically connected to the plunger pump and is used to control the pumping and return fluid of the plunger pump. The second controller 172 is also used to acquire the operating parameters of the plunger pump and a preset test hydraulic pressure value. The efficiency calculation module 173 is electrically connected to the first controller 171 and the second controller 172, and is used to acquire the operating parameters of the plunger pump and calculate the operating efficiency of the plunger pump based on the operating parameters and the preset test hydraulic pressure value.

[0038] For example, a limit switch is installed at each end of the plunger pump guide tube. After the plunger pump motor touches the limit switch, the limit switch transmits the motor's position information to the second controller 172. The second controller 172 controls the forward and reverse rotation of the motor according to the motor's position information, controls the reciprocating motion of the piston, and thus controls the pumping and returning of liquid by the plunger pump.

[0039] For example, the operating parameters of a plunger pump include the pump's power supply voltage U, operating current I, operating time t, number of discharges n, and single discharge volume V. The formula for calculating the operating efficiency of a plunger pump is η=P*n*V / t*U*I, where η is the operating efficiency of the plunger pump and P is the preset test hydraulic pressure value.

[0040] Through the above embodiments, the testing device of this application acquires the operating parameters of the plunger pump through a second controller, and calculates the operating efficiency of the plunger pump based on the operating parameters and a preset test hydraulic value through an efficiency calculation module. The entire process is implemented automatically in real time, without the need for manual calculation, thereby improving the calculation speed of operating efficiency and reducing labor costs.

[0041] According to the example embodiment, such as Figure 1 As shown, the test device 1 for the plunger pump also includes a data acquisition device holder 18 for fixing the data acquisition device 15 to the outlet line 12.

[0042] For example, the data acquisition device fixture 18 is a rigid fixture. Exemplarily, the data acquisition device fixture 18 is connected in series to the liquid outlet line 12, and the test liquid flows through the data acquisition device fixture 18.

[0043] Through the above embodiments, the testing device of this application's technical solution achieves the fixation of the data acquisition device to the liquid outlet pipeline through the data acquisition device fixing component.

[0044] According to an example embodiment, the plunger pump testing apparatus 1 further includes a hydraulic regulator fixing member 19 for fixing the hydraulic regulator 16 to the outlet line 12.

[0045] For example, the hydraulic regulator fixing member 19 is a rigid fixing member. Exemplarily, the hydraulic regulator fixing member 19 is connected in series to the liquid outlet line 12, and the test liquid flows through the hydraulic regulator fixing member 19.

[0046] Through the above embodiments, the testing device of the technical solution of this application realizes the fixing of the hydraulic regulator to the liquid outlet pipeline through the hydraulic regulator fixing component.

[0047] According to the example embodiment, both the liquid outlet line 12 and the liquid return line 13 are pressure-resistant pipes.

[0048] For example, both the outlet pipe 12 and the return pipe 13 are metal pipes or pressure-resistant hoses. Exemplarily, the outlet pipe 12 and the return pipe 13 can be one of steel pipes, copper pipes, alloy pipes, and damping pipes.

[0049] Through the above embodiments, the testing device of this application improves the pressure resistance of the testing pipeline and avoids leakage of high-pressure test liquid by selecting the liquid outlet pipeline and the liquid return pipeline as pressure-resistant pipes.

[0050] According to the example embodiment, an end face seal 20 is also provided at the connection between the return line 13 and the adapter 11.

[0051] For example, the end face seal 20 is an end face sealing ring.

[0052] Through the above embodiments, the testing device of this application improves the sealing performance of the connection between the return liquid pipeline and the pumping end of the plunger pump by setting an end face seal at the connection between the return liquid pipeline and the adapter.

[0053] According to the example embodiment, the data acquisition device 15 is a hydraulic gauge.

[0054] Through the above embodiments, the testing device of this application's technical solution realizes the measurement of hydraulic values ​​in return fluid management by setting a hydraulic gauge.

[0055] According to the example embodiment, the hydraulic regulator 16 is a pressure regulating valve.

[0056] For example, the pressure regulating valve is a high-pressure valve. Exemplarily, the pressure range of this high-pressure valve can be 10-80 MPa.

[0057] Through the above embodiments, the testing device of this application's technical solution achieves the adjustment of hydraulic pressure value in return fluid management by setting a pressure regulating valve.

[0058] According to the example embodiment, the directional control valve 14 is a one-way valve.

[0059] Through the above embodiments, the testing device of this application realizes the control of the opening and closing of the return liquid management by setting a one-way valve.

[0060] Finally, it should be noted that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions of the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A testing device for a plunger pump, characterized in that, include: An adapter is sealed and connected to the pumping end of the plunger pump; The liquid outlet pipe is connected to the adapter at one end and extends into the external test liquid at the other end; The return line is connected at one end to the adapter and at the other end to the external test liquid. A directional control valve is located at the connection between the return line and the adapter. When the plunger pump is pumping liquid, the directional control valve is closed; when the plunger pump is returning liquid, the directional control valve is open. A data acquisition device is installed in the liquid outlet pipeline to collect the hydraulic pressure value in the liquid outlet pipeline; A hydraulic regulator is installed in the outlet pipeline to adjust the hydraulic pressure value in the outlet pipeline; The controller is electrically connected to the plunger pump and is used to control the pumping and return of the plunger pump. The controller is also electrically connected to the hydraulic regulator and the data acquisition unit. The controller is used to receive a preset test hydraulic value input by the user and to control the hydraulic regulator to adjust the hydraulic value in the outlet pipeline to reach the preset test hydraulic value.

2. The test device of claim 1, wherein, The controller includes: The first controller is electrically connected to the hydraulic regulator and the data acquisition unit, and is used to receive the preset test hydraulic value so as to control the hydraulic regulator to adjust the hydraulic value in the outlet pipeline to reach the preset test hydraulic value.

3. The testing apparatus according to claim 2, characterized in that, The controller also includes: The second controller is electrically connected to the plunger pump and is used to control the pumping fluid and return fluid of the plunger pump. The second controller is also used to acquire the operating parameters of the plunger pump. An efficiency calculation module, electrically connected to the first controller and the second controller, is used to acquire the operating parameters of the plunger pump and the preset test hydraulic value, and to calculate the operating efficiency of the plunger pump based on the operating parameters of the plunger pump and the preset test hydraulic value.

4. The testing apparatus according to claim 1, characterized in that, Also includes: A data acquisition device mounting bracket is used to fix the data acquisition device to the liquid outlet pipeline.

5. The testing apparatus according to claim 1, characterized in that, Also includes: A hydraulic regulator fixing component is used to fix the hydraulic regulator to the outlet pipeline.

6. The testing apparatus according to claim 1, characterized in that, Both the outlet pipe and the return pipe are pressure-resistant pipes.

7. The testing apparatus according to claim 1, characterized in that, An end face seal is also provided at the connection between the return pipeline and the adapter.

8. The test device of claim 1, wherein, The data acquisition device is a hydraulic gauge.

9. The test device of claim 1, wherein, The hydraulic regulator is a pressure regulating valve.

10. The test device of claim 1, wherein, The directional control valve is a one-way valve.

Images