A test water supply system

Abstract

This disclosure relates to the field of water supply testing and provides a test water supply system, including: a water supply pipeline, the water supply pipeline including a first water supply pipeline and a second water supply pipeline connected to the first water supply pipeline, the first water supply pipeline and the second water supply pipeline being connected by a connecting pipeline; a constant pressure and constant flow component, including a pressure transmitter and a bipolar booster pump installed on the connecting pipeline. This invention has the following advantages: by setting a pressure transmitter and a bipolar booster pump on the connecting pipeline, real-time monitoring and rapid compensation of the pressure within the water supply pipeline are achieved. When the test scenario requires instantaneous pressure stabilization or rapid switching, the pressure transmitter can instantly feed back the pressure signal. Combined with the rapid action characteristics of the bipolar booster pump, the pressure regulation response time is significantly shortened, effectively avoiding pressure overshoot and low-frequency oscillation caused by actuator lag, thereby ensuring the repeatability and data comparability of the impact test waveform.

Description

Technical Field

[0001] This disclosure relates to the field of water supply testing, and more specifically, to a method for testing a water supply system. Background Technology

[0002] During product impact testing (such as water hammer, pressure pulse, or flow impact testing), the stability of the water supply system parameters (including pressure and flow rate) is a key factor determining the validity, repeatability, and accuracy of product reliability assessment. An ideal water supply system should possess rapid dynamic response, high-precision steady-state maintenance, and wide-condition adaptive adjustment capabilities.

[0003] However, existing water supply systems generally suffer from the following technical bottlenecks in practical applications: Firstly, their pressure regulation response speed is insufficient. When test scenarios require instantaneous pressure stability or rapid pressure state switching, existing systems struggle to adapt quickly, easily leading to instability phenomena such as pressure overshoot and fluctuations. This, in turn, affects the repeatability and data comparability of impact tests. Secondly, their flow control flexibility is limited. Existing systems struggle to precisely adjust flow rates according to different test conditions, especially under the instantaneous high or extremely low flow rate conditions involved in impact tests, where flow stability is poor and cannot meet diverse test requirements. Therefore, a test water supply system is needed to address these issues. Summary of the Invention

[0004] The purpose of this disclosure is to provide a test water supply system and to achieve the aforementioned function of generating different test environments.

[0005] Other features and advantages of this disclosure will become apparent from the following detailed description, or may be learned in part from practice of this disclosure.

[0006] According to one aspect of this disclosure, a test water supply system is provided, comprising: A water supply pipeline, comprising a first water supply pipeline and a second water supply pipeline connected to the first water supply pipeline, wherein the first water supply pipeline and the second water supply pipeline are connected by a connecting pipeline; The constant pressure and constant flow assembly includes a pressure transmitter and a dual-stage booster pump installed on the connecting pipeline. The dual-stage booster pump is installed on the connecting pipeline at a position located on one side of the pressure transmitter. It also includes an electrically controlled shut-off valve installed on the water supply pipeline.

[0007] Furthermore, the electrically controlled shut-off valve is installed on the second water supply pipe, which is located at one end of the dual-stage booster pump.

[0008] Furthermore, one end of the first water supply pipe is provided with a water supply outlet, and one end of the second water supply pipe is provided with a water supply return port, with the water supply outlet and the water supply return port positioned vertically between each other.

[0009] Furthermore, a pulse damper is installed on the connecting pipe, and the pulse damper is located on one side of the bipolar booster pump.

[0010] Furthermore, a flow transmitter is installed on the first water supply pipeline, and the flow transmitter and the electrically controlled shut-off valve are arranged correspondingly above and below each other.

[0011] Furthermore, a frame is provided outside the water supply pipe, and the water supply pipe is located inside the frame. Two openings are provided on one side of the frame, and one end of the first water supply pipe and the second water supply pipe respectively extends through the two openings to the outside of the frame.

[0012] Furthermore, a water storage tank is installed at the bottom of one side of the frame, and the water supply pipe is connected to the water storage tank.

[0013] Furthermore, an electrical control box is provided inside the frame at the location corresponding to the water storage tank, and an electrical cooling system is installed on the electrical control box.

[0014] Furthermore, a parameter setting unit is installed inside the frame at the top of the electrical control box, and the parameter setting unit is connected to the electrical control box via electrical wires.

[0015] Furthermore, the parameter setting unit includes a human-machine interaction module, a communication interface module, a data storage module, and a core processing module, which are electrically connected to each other, and are used to control the pressure transmitter, the pulse damper, the electrically controlled shut-off valve, and the flow transmitter.

[0016] As can be seen from the above technical solutions, the test water supply system in the exemplary embodiments of this disclosure has at least the following advantages and positive effects: In some embodiments of this disclosure, a pressure transmitter and a bipolar booster pump are installed on the connecting pipeline to achieve real-time monitoring and rapid compensation of the pressure in the water supply pipeline. When the test scenario requires instantaneous pressure stabilization or rapid switching, the pressure transmitter can provide immediate feedback of the pressure signal. Combined with the rapid action characteristics of the bipolar booster pump, the pressure regulation response time is significantly shortened, effectively avoiding pressure overshoot and low-frequency oscillation caused by actuator lag, thereby ensuring the repeatability and data comparability of the impact test waveform.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings: Figure 1 A schematic perspective view of the overall first rear face is shown according to an embodiment of the present disclosure; Figure 2 An overall front perspective view is schematically shown according to an embodiment of the present disclosure; Figure 3 An overall side perspective perspective view of an embodiment according to the present disclosure is schematically shown; Figure 4 A schematic perspective view of the overall second rear face is shown according to an embodiment of the present disclosure.

[0019] Diagram description: 1. Frame; 2. First water supply pipe; 201. Water supply outlet; 3. Second water supply pipe; 301. Water supply return port; 4. Pressure transmitter; 5. Dual-stage booster pump; 6. Pulse damper; 7. Water storage tank; 8. Electrically controlled shut-off valve; 9. Flow transmitter; 10. Electrical control box; 11. Electrical cooling system; 12. Parameter setting unit. Detailed Implementation

[0020] 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 examples set forth herein; rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0021] Furthermore, 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 thorough 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 the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0022] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0023] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] This invention provides a test water supply system; please refer to [link / reference]. Figures 1-4 It includes: a water supply pipeline and a constant pressure and constant flow component installed on the water supply pipeline. The water supply pipeline includes a first water supply pipeline 2 and a second water supply pipeline 3 connected to the first water supply pipeline 2. The first water supply pipeline 2 and the second water supply pipeline 3 are connected by a connecting pipeline. The constant pressure and constant flow component includes a pressure transmitter 4 and a dual-stage booster pump 5 installed on the connecting pipeline. The dual-stage booster pump 5 is installed on the connecting pipeline at a position on one side of the pressure transmitter 4. It also includes an electrically controlled shut-off valve 8 installed on the water supply pipeline.

[0026] like Figures 1-4 As shown, the water supply pipelines form the fluid pathway framework of the entire testing system. The first water supply pipeline 2 is responsible for supplying test water from the water source to the device under test (DUT), while the second water supply pipeline 3 is responsible for guiding the returned water back to the system. The two pipelines are connected to form a closed fluid loop. This three-section structure of two pipes plus a connecting pipe essentially constructs a complete circulating water supply loop. The separate design of the first and second water supply pipelines 2 and 3 ensures that the supply and return water paths are physically independent, avoiding the interference between supply and return water in traditional single-pipe testing. The connecting pipeline, serving as a transition section between the two main pipelines, provides centralized space for the installation of constant pressure and constant flow components. It also facilitates centralized control of pressure and flow within this section of the pipeline. More importantly, this structure allows the system to repeatedly circulate water within a closed loop, eliminating the need for a continuous external water source, thus saving water and improving testing efficiency.

[0027] The pressure transmitter 4 is the sensing element in the entire constant pressure and constant flow assembly. It collects the water pressure signal inside the connecting pipe in real time and converts it into an electrical signal to feed back to the control system. Its installation position is chosen on the connecting pipe, rather than on the first or second water supply pipe 3. The connecting pipe is a key node after the water supply and return flow converge. The pressure here best represents the actual working pressure state of the entire loop. Placing the pressure transmitter 4 on the connecting pipe can obtain the true pressure value of the loop with minimal sensing delay. Compared with installing the sensor at the end of the main pipe far away from the regulating mechanism, installing it on the connecting pipe can significantly shorten the pressure feedback transmission path and improve the response speed of closed-loop control. This is crucial for scenarios that require millisecond-level pressure stability in impact testing, effectively avoiding pressure overshoot and waveform distortion caused by sensing lag. This will not be elaborated further in this embodiment.

[0028] The dual-stage booster pump 5 is the actuator in the entire constant pressure and constant flow assembly. It is responsible for rapidly boosting or compensating for the water pressure in the connecting pipeline based on the signal fed back from the pressure transmitter 4. Its core feature is its dual-stage structure, meaning the pump body has two-stage boosting capabilities, enabling rapid and significant pressure regulation over a wide pressure range. Its installation position is limited to the connecting pipeline being located on the same side as the pressure transmitter 4, meaning the booster pump and pressure transmitter 4 are on the same side and spatially adjacent. The dual-stage booster pump 5 and pressure transmitter 4, arranged on the same side, form a compact closed-loop structure of measurement followed by adjustment. In this configuration, the pressure transmitter 4 first senses the pressure deviation, and the booster pump immediately performs a compensation action adjacent to it. The fluid path between the two is extremely short, greatly reducing the response time from the pressure transmitter 4 sensing the action of the dual-stage booster pump 5. Compared with a single-stage pump, the dual-stage structure can maintain a high boosting efficiency at low flow rates, avoiding the problem of slow pressure build-up in traditional single-stage pumps under low flow conditions. At the same time, the dual-stage booster pump 5 itself has rapid start-stop and forward / reverse rotation capabilities. When rapid pressure relief or reverse pressure adjustment is required, its response speed is far superior to that of ordinary centrifugal pumps, which will not be elaborated further in this embodiment.

[0029] The electrically controlled shut-off valve 8 is the on / off control element in the constant pressure and constant flow assembly. Installed on the water supply pipeline, it is used to quickly cut off or connect the water supply circuit under the command of the control system. Together with the pressure transmitter 4 and the bi-stage booster pump 5, it forms a complete three-in-one control system. The introduction of the electrically controlled shut-off valve 8 enables the system to actively cut off the water supply. In impact testing, when a test cycle ends or a rapid switch in test conditions is required, the electrically controlled shut-off valve 8 can completely close the pipeline within milliseconds. Combined with the rapid pressure relief function of the bi-stage booster pump 5, it achieves rapid zeroing of the test pressure, which is particularly crucial for fatigue impact tests requiring high frequency and rapid switching. Compared to manual valves, the electrically controlled shut-off valve 8 eliminates the delay and inconsistency of human operation, ensuring a high degree of repeatability of the starting conditions for each test, directly improving the comparability and reliability of the test data.

[0030] Overall process: After system startup, water from storage tank 7 enters the connecting pipeline section via the first water supply pipe 2. At this time, pressure transmitter 4 monitors the water pressure in the connecting pipeline in real time and transmits the signal to the core processing module in the electrical control box 10. The core processing module compares the real-time pressure value with the preset target pressure value. If there is a deviation, it immediately sends an adjustment command to the dual-stage booster pump 5. When the pressure is lower than the target value, the dual-stage booster pump 5 starts to boost the pressure, using its two-stage structure to quickly increase the pressure in the connecting pipeline to the set value. When the pressure reaches the target value, the booster pump enters standby mode. Only minor compensation is made to offset pipeline losses. During this process, the pressure transmitter 4 continuously feeds back the latest pressure data, forming a high-frequency closed-loop control to ensure that pressure fluctuations are controlled within a very small range. When the test program needs to switch operating conditions or end the current test cycle, the core processing module sends a shut-off command to the electrically controlled shut-off valve 8. The electrically controlled shut-off valve 8 quickly closes the water supply circuit. At the same time, the dual-stage booster pump 5 can cooperate to perform a rapid pressure relief action, so that the pressure in the pipe drops to a safe value in a very short time, preparing for the next test. The entire process does not require manual intervention and is all uniformly scheduled by the electrical control box 10.

[0031] Please continue reading. Figures 1-4 An electrically controlled shut-off valve 8 is installed on the second water supply pipe 3, which is located at one end of the dual-stage booster pump 5. One end of the first water supply pipe 2 is provided with a water supply outlet 201, and one end of the second water supply pipe 3 is provided with a water supply return port 301. The water supply outlet 201 and the water supply return port 301 are arranged vertically between each other. A pulse damper 6 is installed on the connecting pipe, which is located on one side of the dual-stage booster pump 5. A flow transmitter 9 is installed on the first water supply pipe 2, and the flow transmitter 9 and the electrically controlled shut-off valve 8 are arranged vertically in correspondence.

[0032] like Figures 1-4As shown, the electrically controlled shut-off valve 8 is installed on the second water supply pipe 3, not on the first water supply pipe 2 or the connecting pipe, and is located at one end of the dual-stage booster pump 5. From the fluid path perspective, the first water supply pipe 2 is responsible for water supply. Water flows from the water storage tank 7 through the first water supply pipe 2 to the device under test, and then returns through the second water supply pipe 3. The electrically controlled shut-off valve 8 is located on the second water supply pipe 3, which is essentially on the return water pipe. When the electrically controlled shut-off valve 8 is closed, the entire circuit is cut off, the water flow cannot return, and the pressure in the circuit will be quickly established and maintained. When the electrically controlled shut-off valve 8 is opened, the circuit is connected, and the water flow can circulate normally. The electrically controlled shut-off valve 8 is located on the return water pipe (second water supply pipe 3), rather than the inlet water pipe. (First water supply pipe 2) has a clear functional advantage. In the impact test, when it is necessary to quickly release pressure or end a test pulse, closing the shut-off valve on the return water pipe is more effective than closing the shut-off valve on the inlet water pipe. This is because the dual-stage booster pump 5 is still working and can continuously pressurize the circuit. After the return water pipe is cut off, the water in the circuit is sealed in a relatively small volume (mainly the section to be tested connecting the pipe and the first water supply pipe 2). The pressure can reach the target value and stabilize in a very short time. Conversely, if the shut-off valve is located on the inlet water pipe, although the pump is still running after it is closed, the water cannot enter the circuit, and the pressure build-up becomes slower. Moreover, the pump's idling will bring additional energy loss and equipment wear.

[0033] The end of the first water supply pipe 2 (the end furthest from the connecting pipe) is set as a water outlet 201, used to supply test water to the device under test; the end of the second water supply pipe 3 is set as a water return port 301, used to guide the tested water back to the system. This vertical structure makes the water outlet 201 and the water return port 301 form two interfaces distributed vertically on the same side of the frame 1. The tester can install the device under test at the upper water outlet 201, while the lower water return port 301 naturally receives the returned water. The return water is assisted by gravity. The vertical structure makes full use of gravity. With the water outlet 201 at the top and the water return port 301 at the bottom, the test water flows downward naturally under gravity. The return water can flow smoothly back to the water storage tank 7 without additional power, reducing the system's energy consumption and also reducing the problem of air pockets accumulating in the loop due to poor return water flow.

[0034] The pulse damper 6 is installed on the connecting pipe and located on one side of the bipolar booster pump 5. On the connecting pipe, the bipolar booster pump 5 and the pulse damper 6 are arranged sequentially from the bipolar booster pump 5 outwards, both on the same side. The working principle of the pulse damper 6 is to use its internal elastic element (such as an air bladder, piston, or bellows) to absorb pressure pulses and flow fluctuations in the pipeline, smoothing sharp pressure peaks into a relatively gentle pressure curve. During impact testing, the bipolar booster pump 5 generates high-frequency pressure pulses during rapid start-up, shutdown, and forward / reverse rotation. If these pulses are directly transmitted to the device under test, unnecessary noise will be superimposed on the test waveform, affecting the accuracy of the test data. Therefore, the pulse damper 6 is arranged on the same side as the bipolar booster pump 5. Before the generated pressure pulses are transmitted to the pressure transmitter 4, they are filtered by the pulse damper 6, making the signal acquired by the pressure transmitter 4 smoother and more accurate. This avoids pressure reading fluctuations caused by pulse interference, directly improving the accuracy of closed-loop control. The core processing module makes adjustment decisions based on the cleaner pressure signal, and the operation of the bi-stage booster pump 5 is also more precise, thereby reducing unnecessary overshoot and oscillation. The pulse damper 6 is located on one side of the bi-stage booster pump 5, protecting the downstream pressure transmitter 4 from direct impact from the pump body. The bi-stage booster pump 5 generates significant mechanical vibration and hydraulic shock during rapid operation. If the pressure transmitter 4 is directly installed on the outlet side of the pump, long-term use may lead to sensor diaphragm fatigue or even damage. The pulse damper 6 acts as a buffer and isolation between the two, extending the service life of the pressure transmitter 4 and reducing maintenance costs.

[0035] The flow transmitter 9 and the electrically controlled shut-off valve 8 are arranged vertically in a corresponding manner. Although the flow transmitter 9 and the electrically controlled shut-off valve 8 are installed on different pipes (one on the first water supply pipe 2 and the other on the second water supply pipe 3), they are aligned vertically and on the same longitudinal plane. The function of the flow transmitter 9 is to measure the water flow rate through the first water supply pipe 2 in real time and feed the flow signal back to the core processing module. The core processing module combines the flow data and pressure data (from the pressure transmitter 4) to achieve joint control of constant pressure and constant flow—maintaining stable pressure while ensuring that the flow rate is within the set range. The flow transmitter 9 is installed on the first water supply pipe 2 (on the water supply line) rather than on the second water supply pipe 3 (on the return line). The flow rate on the water supply line directly reflects the actual water supply reaching the device under test. If the flow transmitter 9 is installed on the return line, there may be a slight difference between the return flow rate and the supply flow rate due to possible minor leaks or evaporation in the circuit, resulting in inaccurate measurement results.

[0036] Specifically, after the test is started, the water in the storage tank 7 flows upward through the first water supply pipe 2 under the drive of the bipolar booster pump 5, and enters the device under test after reaching the water supply outlet 201. The other end of the device under test is connected to the water supply return port 301. The water after the test flows downward through the second water supply pipe 3 and returns to the storage tank 7 through the connecting pipe, forming a complete circulation loop. During this process, the flow transmitter 9 monitors the flow rate in the first water supply pipe 2 in real time and uploads the data to the core processing module. The pressure transmitter 4 simultaneously monitors the pressure in the connecting pipe and compares it with the target pressure value. If the pressure is too low, the bipolar booster pump 5 immediately starts to boost the pressure; if the pressure reaches the target value, the booster pump enters the fine-tuning compensation state. During this period, the pulse damper 6 continuously filters the pressure pulses generated by the booster pump to ensure that the pressure transmitter 4 reads a smooth and accurate pressure value. When the test program requires a pressure pulse impact, the core processing module sends a shut-off command to the electrically controlled shut-off valve 8. Because the electrically controlled shut-off valve 8 is installed on the second water supply pipe 3 (return water pipe) and is located at the same end of the bipolar booster pump 5, the valve closes in a very short time, and the circuit is cut off. At this time, the bipolar booster pump 5 continues to work, but the water flow cannot return, and the pressure in the circuit (mainly the section to be tested in the first water supply pipe 2 and the connecting pipes) quickly rises to the set value. Pressure transmitter 4 provides real-time pressure data feedback. The core processing module instructs the dual-stage booster pump 5 to stop boosting or enter pressure holding mode the instant the pressure reaches the target value. Simultaneously, the pulse damper 6 absorbs the pressure rebound generated when the pump stops, making the rising edge of the pressure curve steep and without overshoot. After the impact holding time ends, the core processing module instructs the electrically controlled shut-off valve 8 to open, the loop is connected, and the water flow quickly returns under the action of gravity (water supply outlet 201 is on top, water supply return outlet 301 is on the bottom), and the pressure drops rapidly. During this process, the flow transmitter 9 records the return water flow rate to evaluate the flow recovery characteristics of the device under test after the impact. Throughout the process, the corresponding upper and lower settings of the flow transmitter 9 and the electrically controlled shut-off valve 8 ensure the rapid transmission of control signals, the same-side arrangement of the pressure transmitter 4 and the dual-stage booster pump 5 ensures the high speed of the closed-loop response, and the filtering effect of the pulse damper 6 ensures the cleanliness and repeatability of the test waveform.

[0037] Please continue reading. Figures 1-4A frame 1 is installed outside the water supply pipeline, and the water supply pipeline is located inside the frame 1. Two openings are opened on one side of the frame 1. One end of the first water supply pipeline 2 and the second water supply pipeline 3 extend to the outside of the frame 1 through the two openings respectively. A water storage tank 7 is installed at the bottom of one side of the frame 1. The water supply pipeline is connected to the water storage tank 7. An electrical control box 10 is installed inside the frame 1 at the position corresponding to the water storage tank 7. An electrical heat dissipation system 11 is installed on the electrical control box 10. A parameter setting unit 12 is installed inside the frame 1 at the top of the electrical control box 10. The parameter setting unit 12 is connected to the internal device of the electrical control box 10 by wires. The parameter setting unit 12 includes a human-machine interaction module, a communication interface module, a data storage module and a core processing module, which are electrically connected to each other. It is used to control the pressure transmitter 4, the pulse damper 6, the electrically controlled shut-off valve 8 and the flow transmitter 9.

[0038] like Figures 1-4 As shown, a frame 1 is installed outside the water supply pipeline, with the entire water supply pipeline located inside the frame 1. Two openings are made on one side of the frame 1, through which one end of the first water supply pipeline 2 and the second water supply pipeline 3 extends to the outside of the frame 1. This means that the fluid circuit and control components are all housed within a closed frame 1. Simultaneously, both ends of the water supply pipeline (water supply outlet 201 and return inlet) are led out to the outside of the frame 1 through the two openings. The frame 1 provides a unified physical support platform for the entire testing system. All components, including the water supply pipeline, constant pressure and constant current components, water storage tank 7, electrical control box 10, and parameter setting unit 12, are integrated inside the frame 1, forming... A compact, integrated device ensures excellent overall integrity during transportation, installation, and use, avoiding problems such as messy piping and chaotic wiring caused by the scattered arrangement of components. This significantly reduces the workload and error probability of on-site installation. Two openings are made on one side of the frame 1, allowing two water supply pipes to pass through. The two openings concentrate the inlet and outlet ends of the water supply pipes on the same side of the frame 1, allowing testers to complete the clamping and disassembly of the device under test from only one operating surface outside the frame 1. Compared to the solution where pipes extend from multiple directions from the frame 1, the single-side double-hole layout makes the operating space more concentrated, the operation path of the testers shorter, and the clamping efficiency higher.

[0039] A water storage tank 7 is installed at the bottom of one side inside the rack 1, and the water supply pipe is connected to the water storage tank 7. This means that the water storage tank 7 is located at the bottom inside the rack 1. The loop of the water supply pipe is eventually connected to the water storage tank 7, forming a closed loop system with the water storage tank 7 as the water source and return water destination. The water storage tank 7 is located at the bottom inside the rack 1, making full use of the principle of gravity. Water naturally flows downward under the action of gravity. The water storage tank 7 is located at the bottom and can serve as the lowest point of the entire loop. The water in the loop will naturally flow back to the water storage tank 7 under non-pressurized conditions, without the need for additional return water power. This layout simplifies the system structure, reduces energy consumption, and also avoids the problem of air accumulation in the pipeline due to poor return water flow. The gas will naturally rise to the highest point of the loop and be discharged under the action of gravity, while the water storage tank 7, as the lowest point, will not accumulate gas.

[0040] The electrical control box 10 is installed inside the frame 1 at the location corresponding to the water storage tank 7, and an electrical cooling system 11 is installed on the electrical control box 10. This means that the electrical control box 10 and the water storage tank 7 are located in the same area inside the frame 1 (usually the bottom area), and the electrical control box 10 is equipped with a dedicated cooling device. The electrical control box 10 is the electrical control hub of the entire system, integrating the circuits that supply power and issue control commands to all actuators and sensors, such as the pressure transmitter 4, the dual-stage booster pump 5, the electrically controlled shut-off valve 8, the flow transmitter 9, and the pulse damper 6. The electrical cooling system 11 is designed to solve the problem of temperature rise caused by circuit heating during long-term operation of the electrical control box 10. The placement of the electrical control box 10 at the location corresponding to the water storage tank 7 is a clever engineering consideration. The water in the water storage tank 7 has a large heat capacity, which can absorb the heat emitted by the electrical control box 10 to a certain extent, playing a passive cooling auxiliary role.

[0041] The parameter setting unit 12 is the interface for operators to interact with the system. It includes a human-machine interaction module, a communication interface module, a data storage module, and a core processing module. It is responsible for controlling the pressure transmitter 4, the pulse damper 6, the electrically controlled shut-off valve 8, and the flow transmitter 9. The parameter setting unit 12 is installed on the top of the electrical control box 10. When using the equipment, the operator stands naturally in front of the frame 1, with their line of sight roughly level with the upper middle part of the frame 1. By placing the parameter setting unit 12 on the top of the electrical control box 10 (i.e., the upper middle part of the frame 1), the human-machine interaction module (such as a display screen, buttons, touch screen, etc.) is exactly within the operator's line of sight and the most comfortable operating range for their arms. Parameter settings and status checks can be completed without bending over or standing on tiptoe, greatly improving the convenience and comfort of operation. The parameter setting unit 12 is connected to the electrical control box 10 by a wire, not wirelessly.

[0042] The parameter setting unit 12 contains, but is not limited to, four functional modules: a human-machine interaction module, a communication interface module, a data storage module, and a core processing module. The controlled objects of this parameter setting unit 12 are explicitly defined as the pressure transmitter 4, the pulse damper 6, the electrically controlled shut-off valve 8, and the flow transmitter 9. The human-machine interaction module receives operator input (such as setting target pressure, flow rate, number of test cycles, etc.) and displays the system status. The communication interface module exchanges data with external devices (such as a host computer, PLC, data acquisition system, etc.). The data storage module records complete data from each test (pressure curve, flow rate curve, timestamp, etc.). The core processing module is the brain of the entire system, responsible for receiving real-time data from each sensor, processing it, and issuing control commands to each actuator. The primary purpose of the parameter setting unit 12 is to control the aforementioned devices, which will not be elaborated further in this embodiment.

[0043] Specifically, before the test begins, the operator inputs test parameters (such as target pressure value, pulse frequency, pressure holding time, number of test cycles, etc.) through the human-machine interface module of the parameter setting unit 12 on the top of the rack 1. After these parameters are parsed by the core processing module, they are sent to the standby state of each actuator. The water tank 7 has been pre-stored with sufficient test water, and the water supply pipeline loop is in a static state with full water. After the test starts, the core processing module sends a start command to the bipolar booster pump 5 and an open command to the electrically controlled shut-off valve 8 (at this time, the return water pipeline is open). Driven by the bipolar booster pump 5, water circulates from the water tank 7 through the water supply pipeline. The pressure transmitter 4 collects the pressure value in the connected pipeline in real time and feeds it back to the core processing module. After comparing the real-time pressure with the target pressure, the core processing module sends a fine-tuning command to the bipolar booster pump 5 to quickly stabilize the pressure at the target value. During this process, the pulse damper 6 continuously filters the pressure pulses generated by the booster pump to ensure that the data read by the pressure transmitter 4 is smooth and accurate. The flow transmitter 9 synchronously monitors the flow rate in the first water supply pipeline 2, and the data is uploaded to the core processing module in real time. When the test program enters the impact pulse stage, the core processing module sends a shut-off command to the electrically controlled shut-off valve 8. Since the electrically controlled shut-off valve 8 is installed on the second water supply pipeline 3 (return water pipeline) and is located at the same end of the dual-stage booster pump 5, the valve closes in a very short time, the circuit is cut off, the dual-stage booster pump 5 continues to work but the water flow cannot return, the pressure in the circuit rises rapidly, and the pressure transmitter 4 provides real-time feedback of pressure data. The core processing module commands the booster pump to stop or enter the pressure holding mode the moment the pressure reaches the target value. The pulse damper 6 absorbs the pressure oscillations generated by the pump body movement, making the rising edge of the pressure waveform steep and without overshoot. After the impact holding stage ends, the core processing module commands the electrically controlled shut-off valve 8 to open, the circuit is connected, and the layout of the water supply outlet 201 at the top and the water supply return port 301 at the bottom makes the water flow return rapidly under the action of gravity, and the pressure drops rapidly. The flow transmitter 9 records the return water flow data to evaluate the flow recovery characteristics of the device under test.

[0044] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0045] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A test water supply system, characterized in that, include: The water supply pipeline includes a first water supply pipeline (2) and a second water supply pipeline (3) connected to the first water supply pipeline (2), wherein the first water supply pipeline (2) and the second water supply pipeline (3) are connected by a connecting pipeline; The constant pressure and constant flow assembly includes a pressure transmitter (4) and a dual-stage booster pump (5) installed on the connecting pipeline. The dual-stage booster pump (5) is installed on the connecting pipeline at a position on one side of the pressure transmitter (4). It also includes an electrically controlled shut-off valve (8) installed on the water supply pipeline.

2. The test water supply system according to claim 1, characterized in that, The electrically controlled shut-off valve (8) is installed on the second water supply pipe (3), which is located at one end of the bipolar booster pump (5).

3. A test water supply system according to claim 1, characterized in that, The first water supply pipe (2) has a water supply outlet (201) at one end and the second water supply pipe (3) has a water supply return port (301) at one end. The water supply outlet (201) and the water supply return port (301) are arranged vertically.

4. A test water supply system according to claim 1, characterized in that, A pulse damper (6) is installed on the connecting pipe, and the pulse damper (6) is located on one side of the bipolar booster pump (5).

5. A test water supply system according to claim 1, characterized in that, A flow transmitter (9) is installed on the first water supply pipeline (2), and the flow transmitter (9) and the electrically controlled shut-off valve (8) are arranged correspondingly on the top and bottom.

6. A test water supply system according to claim 1, characterized in that, A frame (1) is provided outside the water supply pipe. The water supply pipe is located inside the frame (1). Two openings are provided on one side of the frame (1). One end of the first water supply pipe (2) and the second water supply pipe (3) respectively extends through the two openings to the outside of the frame (1).

7. A test water supply system according to claim 6, characterized in that, A water storage tank (7) is installed at the bottom of one side of the frame (1), and the water supply pipe is connected to the water storage tank (7).

8. A test water supply system according to claim 7, characterized in that, An electrical control box (10) is provided inside the frame (1) at the position corresponding to the water storage tank (7), and an electrical heat dissipation system (11) is installed on the electrical control box (10).

9. A test water supply system according to claim 8, characterized in that, Inside the frame (1), a parameter setting unit (12) is installed on top of the electrical control box (10). The parameter setting unit (12) is connected to the electrical control box (10) via electrical wires.

10. A test water supply system according to claims 1-9, characterized in that, The parameter setting unit (12) includes a human-machine interaction module, a communication interface module, a data storage module and a core processing module, which are electrically connected to each other, and are used to control the pressure transmitter (4), the pulse damper (6), the electrically controlled shut-off valve (8) and the flow transmitter (9).

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