System component reverse liquid impact test method and device

Abstract

The invention provides a system part reverse liquid impact testing method and device. The method comprises the steps that quantitative liquid water is controlled to be injected into a liquid column, high-pressure air is input into a high-pressure buffer tank, and the high-pressure buffer tank adjusts the high-pressure air. And the adjusted high-pressure air is controlled to enter the liquid column, so that the liquid water instantly generates a water column. And water columns are generated for multiple times to impact system parts for multiple times. Quantitative liquid water is controlled to be injected into the liquid column through the liquid valve, and then high-pressure air is input into the high-pressure buffer tank. The air return valve is opened, the adjusted high-pressure air enters the liquid column, liquid water is pushed at the moment when the high-pressure air enters the liquid column, and a water column is generated at the moment by opening the control valve. And repeating the test process to test the strength of the system part under the condition of multiple reverse liquid impact. According to the method, the accuracy and the efficiency of the reverse liquid impact test of the system part are improved, and the performance and the safety of the refrigeration system can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration systems, and particularly to a method and device for testing reverse liquid hammer of system components. Background Art

[0002] Reverse liquid hammer of system components mainly refers to the impact and damage of the fluid impact force of a large amount of liquid refrigerant in the system condenser on choke devices such as the filter and four-way valve of the system under the pressure difference when the four-way valve suddenly changes direction during defrosting. The manifestations are that the filter screen is washed off and the four-way valve is impacted in the reverse direction.

[0003] After researching the current public information, no technician has mentioned the research on the fault analysis, detection equipment and means of reverse liquid hammer of system components. Reverse liquid hammer of system components is a research blank in the industry, and there is a large research space and research value.

[0004] Therefore, a method for testing reverse liquid hammer of system components is needed, which can efficiently and accurately simulate the environment of reverse liquid hammer of system components, improve the test accuracy and efficiency, and has a relatively low test cost. Summary of the Invention

[0005] To overcome the problems existing in the related art, the purpose of the present invention is to provide a method and device for testing reverse liquid hammer of system components, wherein the method for testing reverse liquid hammer of system components can efficiently and accurately simulate the environment of reverse liquid hammer of system components, improve the test accuracy and efficiency, and has a relatively low test cost.

[0006] A method for testing reverse liquid hammer of system components includes:

[0007] Controlling a quantified amount of liquid water to be injected into a liquid column;

[0008] Inputting high-pressure air into a high-pressure buffer tank, and the high-pressure buffer tank adjusts the high-pressure air;

[0009] Controlling the adjusted high-pressure air to enter the liquid column, so that the liquid water instantaneously generates a water column;

[0010] Generating the water column multiple times to impact the system components multiple times, so as to test the intensity of reverse liquid hammer of the system components.

[0011] In a preferred technical solution of the present invention, the controlling a quantified amount of liquid water to be injected into the liquid column includes:

[0012] Opening a liquid valve, controlling the flow of the liquid water, so that the liquid water flows into the liquid column after passing through the liquid valve.

[0013] In a preferred technical solution of the present invention, before the controlling a quantified amount of liquid water to be injected into the liquid column, it further includes:

[0014] Close the return air valve to isolate the high-pressure air and the return air valve;

[0015] Close the control valve to keep the liquid water in the liquid column.

[0016] In a preferred technical solution of the present invention, after inputting high-pressure air into the high-pressure buffer tank and the high-pressure buffer tank adjusts the high-pressure air, it further includes:

[0017] Close the liquid valve to stop the liquid water from flowing into the liquid column.

[0018] In a preferred technical solution of the present invention, controlling the adjusted high-pressure air to enter the liquid column to instantaneously generate a water column includes:

[0019] Open the return air valve to allow the adjusted high-pressure air to enter the liquid column through the return air valve;

[0020] Open the control valve to allow the liquid water to flow through the control valve and instantaneously generate a water column.

[0021] The present invention also provides a system component reverse water hammer test device, which is applied to the system component reverse water hammer test method described in any one of the above. The device includes a liquid column, and both ends of the liquid column are respectively connected to a high-pressure buffer tank and a system component; a return air valve is arranged between the high-pressure buffer tank and the liquid column, and a control valve is arranged between the liquid column and the system component; the liquid column is also connected to a liquid storage tank, and a liquid valve is arranged between the liquid storage tank and the liquid column.

[0022] In a preferred technical solution of the present invention, the first end of the liquid column is connected to the output end of the return air valve, the second end of the liquid column is connected to the output end of the liquid valve, and the third end of the liquid column is connected to the input end of the control valve.

[0023] In a preferred technical solution of the present invention, the output end of the high-pressure buffer tank is connected to the input end of the return air valve, and the input end of the high-pressure buffer tank is connected to the air supply end; high-pressure air flows from the air supply end into the high-pressure buffer tank and then into the return air valve through the input end of the return air valve.

[0024] In a preferred technical solution of the present invention, the input end of the liquid valve is connected to the liquid storage tank, and the liquid storage tank stores liquid water.

[0025] In a preferred technical solution of the present invention, the output end of the control valve is connected to a sample connection pipe, and the end of the sample connection pipe away from the control valve is connected to the system component.

[0026] The beneficial effects of the present invention are:

[0027] The present invention provides a method and device for reverse liquid hammer testing of system components. The method includes controlling a quantified amount of liquid water to be injected into a liquid column; inputting high-pressure air into a high-pressure buffer tank, and the high-pressure buffer tank adjusts the high-pressure air; controlling the adjusted high-pressure air to enter the liquid column, causing the liquid water to instantaneously generate a water column; generating the water column multiple times to impact the system components multiple times, so as to test the intensity of reverse liquid hammer of the system components. During the test, a quantified amount of liquid water is controlled to be injected into the liquid column through a liquid valve, and then high-pressure air is input into the high-pressure buffer tank. After being adjusted by the high-pressure buffer tank, the high-pressure air enters the liquid column by opening a gas return valve. The moment the high-pressure air enters the liquid column, it pushes the liquid water. By opening a control valve, the liquid water instantaneously generates a water column after passing through the control valve. By repeating the above test process, the water column is generated multiple times, and each water column impacts the system components. By impacting the system components multiple times, the intensity of the system components under reverse liquid hammer conditions is tested. By precisely controlling the injection of liquid water and the input of high-pressure air adjusted by the high-pressure buffer tank to instantaneously generate a water column, the phenomenon of reverse liquid hammer of the system components is simulated to test the intensity and durability of the system components under the reverse liquid hammer phenomenon. The above method not only improves the accuracy and efficiency of reverse liquid hammer testing of system components, but also reduces the test cost, and can effectively improve the performance and safety of the refrigeration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the reverse liquid hammer testing device for system components of the present invention;

[0029] Figure 2 is a flowchart of the reverse liquid hammer testing method for system components of the present invention;

[0030] Figure 3 is a flowchart of isolating high-pressure air and liquid water of the present invention;

[0031] Figure 4 is a flowchart of generating a water column of the present invention.

[0032] Reference numerals: 1, liquid column; 2, high-pressure buffer tank; 3, system component; 4, gas return valve; 5, control valve; 6, liquid storage tank; 7, liquid valve; 8, gas supply end; 9, sample connection pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0034] Embodiment 1

[0035] As Figure 2 shown, this embodiment provides a method for reverse liquid hammer testing of system components, including:

[0036] S1: Control a quantitative amount of liquid water to be injected into the liquid column;

[0037] S2: Input high-pressure air into the high-pressure buffer tank, and the high-pressure buffer tank adjusts the high-pressure air;

[0038] S3: Control the adjusted high-pressure air to enter the liquid column, causing the liquid water to instantaneously generate a water column;

[0039] S4: Generate the water column multiple times to impact the system component multiple times to test the strength of the reverse liquid hammer of the system component.

[0040] During the test, first, a quantitative amount of liquid water can be injected into the liquid column 1 through the high-precision liquid valve 7. The liquid water serves as the test medium to simulate the water in the reverse liquid hammer phenomenon of the refrigeration system. The precise control of the liquid valve 7 ensures that the amount of liquid water injected each time is exactly the same, and the injection amount of the liquid water can also be flexibly adjusted according to the test requirements, thereby ensuring the repeatability and accuracy of the test.

[0041] Next, input the high-pressure air into the high-pressure buffer tank 2. The function of the high-pressure buffer tank 2 is to store and adjust the high-pressure air to ensure the stable operation of the system. The high-pressure buffer tank 2 adjusts the input high-pressure air to make the pressure of the high-pressure air more stable and uniform. The internal structure design of the high-pressure buffer tank 2 can effectively reduce the turbulence and pressure fluctuations of the air flow, ensuring that the output high-pressure air has stable power. This process is a key link in simulating the liquid hammer phenomenon, and stable high-pressure air is the basis for generating a uniform liquid hammer impact force.

[0042] After the liquid water is injected into the liquid column 1, control the adjusted high-pressure air to enter the liquid column 1. The moment the high-pressure air enters the liquid column 1, it pushes the liquid water, causing it to form a high-speed water column. This process is achieved through the control valve 5 of the system. When the high-pressure air enters the liquid column 1 and pushes the liquid water instantaneously, open the control valve 5 so that the liquid water instantaneously generates a water column after passing through the control valve 5. The impact force of the water column can be precisely controlled by adjusting the pressure of the high-pressure air and the injection amount of the liquid water to simulate liquid hammer phenomena of different intensities.

[0043] By repeating the above process multiple times, the water column is generated multiple times to impact the system component 3. Each impact simulates the reverse liquid hammer phenomenon that the system component 3 may encounter during actual operation. Through multiple impact tests, the strength and durability of the system component 3 under the reverse liquid hammer phenomenon can be tested.

[0044] A method for reverse liquid hammer test of a system component in this embodiment includes controlling a quantified amount of liquid water to be injected into the liquid column 1; inputting high-pressure air into the high-pressure buffer tank 2, and the high-pressure buffer tank 2 adjusts the high-pressure air; controlling the adjusted high-pressure air to enter the liquid column 1 to instantaneously generate a water column of the liquid water; generating the water column multiple times to impact the system component 3 multiple times to test the strength of the reverse liquid hammer of the system component 3. During the test, a quantified amount of liquid water is controlled to be injected into the liquid column 1 through the liquid valve 7, and then high-pressure air is input into the high-pressure buffer tank 2. After being adjusted by the high-pressure buffer tank 2, the high-pressure air enters the liquid column 1 by opening the air return valve 4. The moment the high-pressure air enters the liquid column 1, it pushes the liquid water. By opening the control valve 5, the liquid water instantaneously generates a water column after passing through the control valve 5. By repeating the above test process, the water column is generated multiple times, and each water column impacts the system component 3. By impacting the system component 3 multiple times, the strength of the system component 3 under reverse liquid hammer conditions is tested. By precisely controlling the injection of the liquid water and the input of the high-pressure air adjusted by the high-pressure buffer tank 2 to instantaneously generate a water column, the phenomenon of reverse liquid hammer of the system component 3 is simulated to test the strength and durability of the system component 3 under the reverse liquid hammer phenomenon. The above method not only improves the test accuracy and efficiency but also reduces the test cost, and can effectively improve the performance and safety of the refrigeration system.

[0045] Embodiment 2

[0046] As Figure 2 shown, this embodiment provides a method for reverse liquid hammer test of a system component, including:

[0047] S1: Control a quantified amount of liquid water to be injected into the liquid column;

[0048] S2: Input high-pressure air into the high-pressure buffer tank, and the high-pressure buffer tank adjusts the high-pressure air;

[0049] S3: Control the adjusted high-pressure air to enter the liquid column to instantaneously generate a water column of the liquid water;

[0050] S4: Generate the water column multiple times to impact the system component multiple times to test the strength of the reverse liquid hammer of the system component.

[0051] The control of a quantified amount of liquid water to be injected into the liquid column includes:

[0052] S11: Open the liquid valve to control the flow of the liquid water so that the liquid water flows into the liquid column after passing through the liquid valve.

[0053] As Figure 3 shown, before the control of a quantified amount of liquid water to be injected into the liquid column, it further includes:

[0054] S11’: Close the return air valve to isolate the high-pressure air and the return air valve.

[0055] S12’: Close the control valve to keep the liquid water in the liquid column.

[0056] After the input of high-pressure air into the high-pressure buffer tank and the regulation of the high-pressure air by the high-pressure buffer tank, it further includes:

[0057] Close the liquid valve to stop the liquid water from flowing into the liquid column.

[0058] As Figure 4 shown, the regulated high-pressure air enters the liquid column, causing the liquid water to instantly generate a water column, including:

[0059] S31: Open the return air valve to allow the regulated high-pressure air to enter the liquid column through the return air valve.

[0060] S32: Open the control valve to allow the liquid water to flow through the control valve and instantly generate a water column.

[0061] Before the test, first install the sample connecting pipe 9 and the system component 3, and then ensure that the return air valve 4 and the control valve 5 of the system are in the closed state. If the return air valve 4 and the control valve 5 are in the open state, the return air valve 4 and the control valve 5 need to be closed first. After the return air valve 4 is closed, the high-pressure air is isolated, and the high-pressure air cannot enter the liquid column 1 through the return air valve 4. After the control valve 5 is closed, when the liquid valve 7 is in the open state, the liquid water enters the liquid column 1 through the liquid valve 7 and stays in the liquid column 1, and the liquid water cannot pass through the control valve 5 temporarily. When the liquid valve 7 is in the closed state, the liquid water stops entering the liquid column 1 through the liquid valve 7, and at this time, a fixed amount of liquid water is injected into the liquid column 1.

[0062] After the test starts, first open the liquid valve 7 to control a fixed amount of liquid water to flow into the liquid column 1 through the liquid valve 7, then input high-pressure air into the high-pressure buffer tank 2, and use the high-pressure buffer tank 2 to regulate the high-pressure air. The regulated high-pressure air has a stable and uniform pressure. After inputting the high-pressure air into the high-pressure buffer tank 2, immediately close the liquid valve 7 to stop the liquid water from flowing into the liquid column 1 through the liquid valve 7. At this time, a fixed amount of liquid water has been injected into the liquid column 1. While closing the liquid valve 7, open the return air valve 4 and the control valve 5, so that the regulated high-pressure air directly enters the liquid column 1 after passing through the return air valve 4. The high-pressure air pushes the liquid water in the liquid column 1, causing the liquid water to instantly generate a water column after passing through the control valve 5. The water column has a certain impact force, and the water column impacts the system component 3 after passing through the sample connecting pipe 9.

[0063] A method for reverse liquid hammer test of a system component in this embodiment includes controlling a quantified amount of liquid water to be injected into the liquid column 1; inputting high-pressure air into the high-pressure buffer tank 2, and the high-pressure buffer tank 2 adjusts the high-pressure air; controlling the adjusted high-pressure air to enter the liquid column 1 to instantaneously generate a water column in the liquid water; generating the water column multiple times to impact the system component 3 multiple times to test the intensity of reverse liquid hammer of the system component 3. Controlling the quantified amount of liquid water to be injected into the liquid column 1 includes opening the liquid valve 7 and controlling the flow of the liquid water so that the liquid water flows into the liquid column 1 after passing through the liquid valve 7. Before controlling the quantified amount of liquid water to be injected into the liquid column 1, it also includes closing the air return valve 4 to isolate the high-pressure air and the air return valve 4; closing the control valve 5 so that the liquid water stays in the liquid column 1. After inputting high-pressure air into the high-pressure buffer tank 2 and the high-pressure buffer tank 2 adjusts the high-pressure air, it also includes closing the liquid valve 7 to stop the liquid water from flowing into the liquid column 1. Controlling the adjusted high-pressure air to enter the liquid column 1 to instantaneously generate a water column in the liquid water includes: opening the air return valve 4 so that the adjusted high-pressure air enters the liquid column 1 through the air return valve 4; opening the control valve 5 so that the liquid water flows through the control valve 5 to instantaneously generate a water column. Before the test, it is necessary to first install the sample connecting pipe 9 and the system component 3, and close the air return valve 4 and the control valve 5 of the refrigeration system so that the high-pressure air cannot enter the liquid column 1 through the air return valve 4. After the test starts, first open the liquid valve 7, control a quantified amount of liquid water to be injected into the liquid column 1 through the liquid valve 7, and then input high-pressure air into the high-pressure buffer tank 2, and the high-pressure buffer tank 2 adjusts the high-pressure air. After inputting high-pressure air into the high-pressure buffer tank 2, immediately close the liquid valve 7, and at the same time open the air return valve 4 and the control valve 5. The high-pressure air adjusted by the high-pressure buffer tank 2 enters the liquid column 1 through the air return valve 4, and the high-pressure air pushes the liquid water so that the liquid water instantaneously generates a water column after passing through the control valve 5, and the water column impacts the system component 3. By repeating the above process multiple times, the water column is generated multiple times to impact the system component 3 multiple times to test the intensity of reverse liquid hammer of the system component 3.

[0064] Example 3

[0065] As Figure 1 shown, this embodiment provides a reverse liquid hammer test device for a system component, which is applied to the reverse liquid hammer test method in Embodiment 1 or Embodiment 2. The device includes a liquid column 1, and both ends of the liquid column 1 are respectively connected with a high-pressure buffer tank 2 and a system component 3; an air return valve 4 is arranged between the high-pressure buffer tank 2 and the liquid column 1, and a control valve 5 is arranged between the liquid column 1 and the system component 3; the liquid column 1 is also connected with a liquid storage tank 6, and a liquid valve 7 is arranged between the liquid storage tank 6 and the liquid column 1.

[0066] The first end of the liquid column 1 is connected to the output end of the air return valve 4, the second end of the liquid column 1 is connected to the output end of the liquid valve 7, and the third end of the liquid column 1 is connected to the input end of the control valve 5.

[0067] The output end of the high-pressure buffer tank 2 is connected to the input end of the air return valve 4, and the input end of the high-pressure buffer tank 2 is connected to the air supply end 8; high-pressure air flows from the air supply end 8 into the high-pressure buffer tank 2 and then into the air return valve 4 through the input end of the air return valve 4.

[0068] The system component 3 is fixed to one end of the sample connection pipe 9 by threaded connection. The system component 3 simulates the pipeline in the actual water pump system and is used to test the liquid hammer strength that the sample can withstand. The air return valve 4 includes a valve body and a one-way check valve. The valve body is usually tubular and is provided with connecting threads at both ends. The air return valve 4 is used to control the reflux of high-pressure air and prevent the system pressure from being too high.

[0069] The control valve 5 can be a ball valve, a globe valve, a gate valve or a cock valve. When the liquid valve 7 is opened, liquid water flows through the liquid valve 7 into the liquid column 1, and high-pressure air flows into the high-pressure buffer tank 2. When the liquid valve 7 is closed, the liquid water stops flowing into the liquid column 1. When the air return valve 4 and the control valve 5 are opened, high-pressure gas flows into the liquid column 1 and pushes the water in the liquid column 1 outwards, thus forming a water column instantaneously. The water column directly impacts the system component 3 to test the strength of the system component 3 to withstand the counter liquid hammer. The control valve 5 is used to control whether the liquid water in the liquid column 1 sprays out or not, that is, when the control valve 5 is opened, the liquid water in the liquid column 1 sprays outwards to form a water column; when the control valve 5 is closed, the liquid water stays in the liquid column 1. In this embodiment, taking the liquid column 1 as a container with a cylindrical structure as an example, the liquid column 1 is used to accommodate liquid water and high-pressure air.

[0070] The liquid storage tank 6 is made of 316 stainless steel. The liquid storage tank 6 is used to store liquid water and provide a stable water source for the system. A water pipe is connected between the liquid storage tank 6 and the liquid valve 7. By adjusting the opening degree of the liquid valve 7, the flow rate and velocity of the liquid water flowing into the liquid column 1 can be adjusted.

[0071] The liquid column 1 has two input ends and one output end. The first end of the liquid column 1 is connected to the output end of the air return valve 4 for introducing high-pressure gas into the liquid column 1. The second end of the liquid column 1 is connected to the output end of the liquid valve 7 for allowing liquid water to flow into the liquid column 1. The third end of the liquid column 1 is connected to the input end of the control valve 5 for allowing the liquid water in the liquid column 1 to spray out. The first end and the second end of the liquid column 1 can be separately arranged, or the first end and the second end of the liquid column 1 share a common port. On the outer side of the liquid column 1, the air supply pipe and the liquid supply pipe meet to form a meeting point, and the part between the meeting point and the port of the liquid column 1 allows high-pressure gas and liquid water to flow into the liquid column 1.

[0072] A first gas regulating valve is provided on the high-pressure buffer tank 2 to adjust the pressure of air according to the test pressure required by the test sample. The high-pressure buffer tank 2 is used to store and regulate high-pressure air to ensure the stable operation of the system. The inlet of the high-pressure buffer tank 2 is connected to an air supply pipe, and a second gas regulating valve is connected to the air supply pipe. Opening the second gas regulating valve allows the gas in the air supply pipe to flow into the high-pressure buffer tank 2; closing the second gas regulating valve can prevent the gas in the air supply pipe from flowing into the high-pressure buffer tank 2. Adjusting the opening degree of the second gas regulating valve can adjust the flow rate and velocity of the gas flowing from the air supply pipe into the high-pressure buffer tank 2.

[0073] A system component reverse water hammer test device according to this embodiment is applied to the system component reverse water hammer test method in Embodiment 1 or Embodiment 2. The device includes a liquid column 1, and both ends of the liquid column 1 are respectively connected to a high-pressure buffer tank 2 and a system component 3; a gas return valve 4 is provided between the high-pressure buffer tank 2 and the liquid column 1, and a control valve 5 is provided between the liquid column 1 and the system component 3; the liquid column 1 is further connected to a liquid storage tank 6, and a liquid valve 7 is provided between the liquid storage tank 6 and the liquid column 1. Liquid water flows into the liquid column 1 through the liquid valve 7, and high-pressure air flows into the high-pressure buffer tank 2. Closing the liquid valve 7 stops the liquid water from flowing into the liquid column 1. Opening the gas return valve 4 and the control valve 5 allows high-pressure gas to flow into the liquid column 1, pushing the water in the liquid column 1 outwards, thereby instantaneously forming a water column that directly impacts the system component 3 to test the strength of the system component 3 to withstand reverse water hammer. The control valve 5 is used to control whether the liquid water in the liquid column 1 sprays out or not, that is, opening the control valve 5 causes the liquid water in the liquid column 1 to spray outwards to form a water column; closing the control valve 5 causes the liquid water to stay in the liquid column 1, and the liquid column 1 is used to hold the liquid water and high-pressure air.

[0074] Embodiment 4

[0075] As Figure 1 shown, this embodiment provides a system component reverse water hammer test device applied to the system component reverse water hammer test method described in Embodiment 1 or Embodiment 2. The device includes a liquid column 1, and both ends of the liquid column 1 are respectively connected to a high-pressure buffer tank 2 and a system component 3; a gas return valve 4 is provided between the high-pressure buffer tank 2 and the liquid column 1, and a control valve 5 is provided between the liquid column 1 and the system component 3; the liquid column 1 is further connected to a liquid storage tank 6, and a liquid valve 7 is provided between the liquid storage tank 6 and the liquid column 1.

[0076] The input end of the liquid valve 7 is connected to the liquid storage tank 6, and the liquid storage tank 6 stores liquid water.

[0077] The output end of the control valve 5 is connected to a sample connection pipe 9, and one end of the sample connection pipe 9 away from the control valve 5 is connected to the system component 3.

[0078] The liquid storage tank 6 is made of 316 stainless steel. The liquid storage tank 6 is connected to the input end of the liquid valve 7 through a steel pipe. Liquid water is stored in the liquid storage tank 6, providing a stable water source for the entire refrigeration system. The capacity and structure of the liquid storage tank 6 can meet the requirements of long-term or high-flow liquid water transportation. The liquid water maintains a certain liquid level height in the liquid storage tank 6. The liquid storage tank 6 is connected to the liquid valve 7 through a pipeline to ensure that the liquid water can flow smoothly into the liquid valve 7. The main function of the liquid valve 7 is to control the flow direction and flow rate of the liquid water. The internal structure of the liquid valve 7 includes an adjustable valve core and a sealing device to achieve precise flow control.

[0079] A sample connecting pipe 9 is connected to the output end of the control valve 5. The sample connecting pipe 9 is made of corrosion-resistant and high-pressure-resistant materials to ensure that there is no leakage or damage during the transportation of liquid water. The other end of the sample connecting pipe 9 is connected to the system component 3. The system component 3 is fixed to one end of the sample connecting pipe 9 by means of threaded connection.

[0080] During the test, the liquid water flows out from the liquid storage tank 6, flows along the pipeline through the input end of the liquid valve 7 and into the liquid valve 7. The liquid valve 7 adjusts the flow rate of the liquid water through a control signal or manual operation, so that a quantitative amount of liquid water flows out from the output end of the liquid valve 7. The liquid water flows along the pipeline into the liquid column 1. Through the flow control of the liquid water by the liquid valve 7, a quantitative amount of liquid water can be transported into the liquid column 1. When the control valve 5 is opened, the liquid water is pushed by high-pressure air, causing a water column to be generated instantaneously at the output end of the liquid valve 7. The water column impacts the system component 3 along the sample connecting pipe 9. By repeating the above process multiple times, water columns are generated multiple times to impact the system component 3 multiple times to test the strength of the system component 3.

[0081] A reverse liquid hammer test device for system components in this embodiment is applied to the reverse liquid hammer test method for system components described in Embodiment 1 or Embodiment 2. The device includes a liquid column 1, and a high-pressure buffer tank 2 and a system component 3 are respectively connected to both ends of the liquid column 1; a gas return valve 4 is arranged between the high-pressure buffer tank 2 and the liquid column 1, and a control valve 5 is arranged between the liquid column 1 and the system component 3; the liquid column 1 is further connected to a liquid storage tank 6, and a liquid valve 7 is arranged between the liquid storage tank 6 and the liquid column 1. The input end of the liquid valve 7 is connected to the liquid storage tank 6, and liquid water is stored in the liquid storage tank 6. The output end of the control valve 5 is connected to a sample connection pipe 9, and one end of the sample connection pipe 9 away from the control valve 5 is connected to the system component 3. During the test, when the liquid valve 7 is opened, the liquid water flows out of the liquid storage tank 6, flows along the pipeline through the input end of the liquid valve 7 and into the liquid valve 7, and the flow rate and flow direction of the liquid water are controlled by the liquid valve 7 to make a quantitative amount of liquid water flow into the liquid column 1. When the control valve 5 is opened, the liquid water is pushed by high-pressure air, and a water column is instantly generated after the liquid water passes through the output end of the liquid valve 7. The water column impacts the system component 3 along the sample test pipe. The above process is repeated multiple times, and water columns are generated multiple times to impact the system component 3 multiple times, so as to test the strength of the system component 3.

[0082] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present application. In all examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0083] It should be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures of the device. For example, if the device in the figures is inverted, the device described as "above other devices or structures" or "on top of other devices or structures" will then be positioned "below other devices or structures" or "beneath other devices or structures". Thus, the exemplary term "above" can include both orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations are made for the spatially relative descriptions used herein.

[0084] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above terms have no special meanings, so they should not be construed as limiting the protection scope of this application.

[0085] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A system component reverse liquid impact test method, characterized in that: include: Controlling the injection of a certain amount of liquid water into the liquid column; Input high-pressure air into the high-pressure buffer tank, which regulates the high-pressure air; The regulated high-pressure air is controlled to enter the liquid column, causing the liquid water to instantly generate a water column; The water column is generated multiple times to impact the system components multiple times to test the strength of the reverse liquid impact of the system components.

2. The system component reverse liquid impact test method according to claim 1, characterized in that: The step of controlling a certain amount of liquid water to be injected into the liquid column comprises: Open the liquid valve and control the flow of liquid water so that the liquid water flows into the liquid column after passing through the liquid valve.

3. The system component reverse liquid impact test method according to claim 1, characterized in that: Before the controlled quantitative liquid water is injected into the liquid column, the method further comprises: Close the air return valve to isolate the high-pressure air and the air return valve; Close the control valve so that the liquid water remains in the liquid column.

4. The system component reverse liquid impact test method according to claim 1, characterized in that: After the high-pressure air is input to the high-pressure buffer tank and the high-pressure buffer tank regulates the high-pressure air, the method further comprises: Close the liquid valve to stop the liquid water from flowing into the liquid column.

5. The system component reverse liquid impact test method according to claim 1, characterized in that: The controlled and regulated high-pressure air enters the liquid column, causing the liquid water to instantly generate a water column, including: Open the air return valve to allow the regulated high-pressure air to enter the liquid column through the air return valve; Open the control valve to allow liquid water to flow through the control valve, generating a water column instantly.

6. A system component reverse liquid impact test device, characterized in that: The reverse liquid hammer test method for system components applied to any one of claims 1 to 5, wherein the device comprises a liquid column, wherein both ends of the liquid column are respectively connected to a high-pressure buffer tank and a system component; an air return valve is arranged between the high-pressure buffer tank and the liquid column, and a control valve is arranged between the liquid column and the system component; the liquid column is also connected to a liquid storage tank, and a liquid valve is arranged between the liquid storage tank and the liquid column.

7. The system component reverse liquid impact test device according to claim 6, characterized in that: The first end of the liquid column is connected to the output end of the air return valve, the second end of the liquid column is connected to the output end of the liquid valve, and the third end of the liquid column is connected to the input end of the control valve.

8. The system component reverse liquid impact test device according to claim 6, characterized in that: The output end of the high-pressure buffer tank is connected to the input end of the return air valve, and the input end of the high-pressure buffer tank is connected to the air supply end; high-pressure air flows into the high-pressure buffer tank from the air supply end, and flows into the return air valve through the input end of the return air valve.

9. The system component reverse liquid impact test device according to claim 6, characterized in that: The input end of the liquid valve is connected to the liquid storage tank, and liquid water is stored in the liquid storage tank.

10. The system component reverse liquid impact test device according to claim 6, characterized in that: The output end of the control valve is connected to a sample connecting tube, and one end of the sample connecting tube away from the control valve is connected to the system component.

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