A method, system, and storage medium for testing the airtightness of a diaphragm accumulator.

Abstract

This application relates to a method, system, and storage medium for airtightness testing of a diaphragm accumulator, relating to the field of accumulator technology. The method includes acquiring preparation completion trigger information of the diaphragm accumulator; acquiring test plan information of the diaphragm accumulator based on the preparation completion trigger information; controlling a preset hydraulic system to perform a liquid filling test on the diaphragm accumulator according to the test plan information to determine pressure detection information; analyzing the pressure detection information and the test plan information to determine the liquid pressure information of the hydraulic system; determining whether the pressure detection information meets the requirements of the liquid pressure information; if it does not meet the requirements, issuing a warning according to a preset non-compliance warning message; if it meets the requirements, issuing a warning according to a preset compliance warning message. This application improves the accuracy of airtightness testing of diaphragm accumulators.

Description

Technical Field

[0001] This application relates to the field of accumulator technology, and in particular to a method, system and storage medium for testing the airtightness of a diaphragm accumulator. Background Technology

[0002] A diaphragm accumulator is an energy storage device used in hydraulic systems. It divides its internal space into two parts by a welded diaphragm. One part stores compressed gas, while the other part is connected to the hydraulic fluid in the hydraulic system. When the pressure in the hydraulic system increases, the fluid is forced into the accumulator to compress the gas. When the system pressure decreases, the gas expands and pushes the stored fluid back into the hydraulic system.

[0003] In related technologies, the airtightness test of diaphragm accumulators usually adopts the ammonia test method. Ammonia is introduced into the charging end of the diaphragm accumulator, the diaphragm accumulator is sealed, concentrated hydrochloric acid is applied to the external seams of the diaphragm accumulator, and then it is observed whether a white precipitate appears at the applied area. If no precipitate appears, it indicates that the seal is good; if a white precipitate appears, it indicates that ammonia is leaking from this point.

[0004] Regarding the aforementioned technologies, the chemical reaction between concentrated hydrochloric acid and ammonia is used to detect the airtightness of diaphragm accumulators. However, this requires a relatively large amount of ammonia leakage to be observed. For diaphragm accumulators with slow leakage, the amount of ammonia leaking within a certain time is minimal, and concentrated hydrochloric acid cannot react chemically within the effective time. This leads to the mistaken conclusion that diaphragm accumulators with poor airtightness have good airtightness, resulting in low accuracy in the airtightness detection of diaphragm accumulators. There is still room for improvement. Summary of the Invention

[0005] To improve the accuracy of airtightness testing for diaphragm accumulators, this application provides a method, system, and storage medium for airtightness testing of diaphragm accumulators.

[0006] In a first aspect, this application provides a method for testing the airtightness of a diaphragm accumulator, employing the following technical solution:

[0007] A method for testing the airtightness of a diaphragm accumulator includes:

[0008] Obtain the preparation completion trigger information of the diaphragm accumulator;

[0009] Based on the preparation completion trigger information, obtain the test plan information of the diaphragm accumulator;

[0010] According to the test plan information, the preset hydraulic system is controlled to perform a liquid filling test on the diaphragm accumulator to determine the pressure detection information;

[0011] The hydraulic system's fluid pressure information is determined by analyzing pressure detection information and test plan information.

[0012] Determine whether the pressure detection information meets the requirements for liquid pressure information;

[0013] If it does not meet the requirements, a prompt will be displayed according to the preset non-compliance message;

[0014] If it meets the requirements, a prompt will be given according to the preset qualified prompt information.

[0015] By adopting the above technical solution, the hydraulic system is controlled to perform a liquid filling test on the diaphragm accumulator, thereby detecting the pressure detection information of the diaphragm accumulator. Based on the comparison between the pressure detection information and the liquid pressure information, it is determined whether the pressure at the gas end of the diaphragm accumulator changes when the liquid end pressure changes. Even in the case of very small leakage, the pressure change can be detected in real time, thereby improving the accuracy of the airtightness detection of the diaphragm accumulator.

[0016] Optionally, the step of controlling a preset hydraulic system to perform a filling test on the diaphragm accumulator according to the test plan information to determine the pressure detection information includes:

[0017] The test plan information is analyzed to determine the test stress information and the corresponding test sequence number information.

[0018] Based on the test sequence number and the corresponding test pressure information, the hydraulic system is controlled to fill the liquid end of the diaphragm accumulator with liquid.

[0019] Obtain actual test pressure and filling time information of the hydraulic system;

[0020] The baseline filling time information is determined by analyzing the actual test pressure information and the preset pressure-time relationship information.

[0021] Determine whether the filling time information meets the requirements of the baseline filling time information;

[0022] If it does not meet the requirements, continue to obtain filling time information for repeated judgment;

[0023] If the conditions are met, the hydraulic system is controlled to obtain the basic pressure detection information, and the hydraulic system is controlled to fill the liquid end of the diaphragm accumulator with liquid according to the test sequence information and the corresponding test pressure information for cyclic testing.

[0024] Associate basic pressure detection information to generate pressure detection information.

[0025] By adopting the above technical solution, after the hydraulic system fills the liquid into the liquid end of the diaphragm accumulator, the filling time information is compared with the reference filling time information to determine whether the hydraulic system has completed filling. After confirming that the filling is complete, the hydraulic system is then controlled to detect the basic pressure information, so that the detected pressure does not contain useless pressure changes during the filling process. This allows the basic pressure detection information under different filling pressures to be correlated to obtain pressure detection information, thereby improving the accuracy of the pressure detection information.

[0026] Optionally, the step of controlling the hydraulic system to fill the liquid terminal of the diaphragm accumulator with liquid according to the test sequence number information and the corresponding test pressure information includes:

[0027] The test pattern information is determined by analyzing the test sequence number information and the corresponding test pressure information.

[0028] Determine whether the test pattern information meets the requirements of the preset step pattern information;

[0029] If the conditions are met, the corresponding test pressure information is selected sequentially according to the sequence number information to control the hydraulic system to fill the liquid into the liquid end of the diaphragm accumulator.

[0030] If it does not meet the requirements, the hydraulic system will be controlled to fill the liquid end of the diaphragm accumulator according to the preset step test method.

[0031] By adopting the above technical solution, when the test pattern information does not meet the requirements of the step pattern information, it indicates that the test pressure is changing randomly. When testing with random pressure, the hydraulic system needs to constantly change the liquid pressure. Therefore, according to the step test method, the hydraulic system is controlled to fill the liquid end of the diaphragm accumulator with liquid. After one liquid pressure test is completed, the liquid pressure is increased or decreased to the next liquid pressure based on that liquid pressure for testing, thereby improving the convenience of filling the hydraulic system with liquid.

[0032] Optionally, the step of controlling the hydraulic system to fill the liquid terminal of the diaphragm accumulator with liquid according to a preset stepped test method includes:

[0033] The basic test sequence information is determined by tiered sorting based on the test pressure information.

[0034] Based on the basic test sequence information, test pressure is invoked and associated with the corresponding test sequence number information to generate test pressure sequence information;

[0035] Based on the test pressure sequence information, the hydraulic system is controlled to charge the liquid into the liquid end of the diaphragm accumulator by selecting the test pressure one by one.

[0036] By adopting the above technical solution, when it is determined that the test pressure information corresponding to the test sequence number is unordered, the test pressure information is sorted in a stepwise manner to obtain basic test sequence information. Then, the test sequence number information corresponding to the test pressure is associated with the basic test sequence information to obtain test pressure sequence information. According to the test pressure sequence information, the test pressure is selected one by one to control the hydraulic system to fill the liquid end. This allows the hydraulic system to increase or decrease the liquid pressure to the next liquid pressure after completing the filling of one test pressure, thereby improving the convenience of filling the hydraulic system with liquid.

[0037] Optionally, the step of controlling the hydraulic system to fill the liquid terminal of the diaphragm accumulator with liquid according to the test sequence number information and the corresponding test pressure information further includes:

[0038] Obtain the current test pressure information of the hydraulic system;

[0039] Based on the current test pressure information, the hydraulic system is controlled to fill the liquid end of the diaphragm accumulator with liquid and the number of filling times is obtained;

[0040] Determine whether the filling number information meets the preset cycle number information requirements;

[0041] If the conditions are met, continue to obtain the next current test pressure information to cycle through the filling process;

[0042] If the condition is not met, the hydraulic system continues to be controlled to fill the liquid end of the diaphragm accumulator, and the number of filling times is continuously acquired for cyclical judgment.

[0043] By adopting the above technical solution, when the hydraulic system fills the liquid into the liquid end of the diaphragm accumulator, the filling number information is detected. If the filling number information does not meet the requirements of the cycle number information, the hydraulic system is controlled to continue filling the liquid into the liquid end of the diaphragm accumulator, thereby cyclically filling and discharging the liquid under a test pressure to perform a cyclic test on the airtightness of the diaphragm accumulator, thereby improving the accuracy of the airtightness test of the diaphragm accumulator.

[0044] Optionally, when the pressure detection information does not meet the requirements of the liquid pressure information, a verification step for the pressure detection information is also included. Specific steps include:

[0045] Obtain pressure change trend information from pressure detection data;

[0046] Determine whether the pressure change trend information meets the preset requirements for upward trend information;

[0047] If the conditions are met, retain the pressure detection information;

[0048] If it does not meet the requirements, the pressure detection information is discarded, and the individual test pressure curve information is obtained.

[0049] Determine whether the information from a single test pressure curve meets the requirements of the preset liquid leakage pressure curve information;

[0050] If the conditions are met, a warning will be issued based on the preset liquid leak warning information;

[0051] If it does not meet the requirements, a prompt will be issued based on the preset device malfunction message.

[0052] By adopting the above technical solution, when the pressure detection information is not equal to the liquid pressure information, it indicates that there may be a leak at the gas end of the diaphragm accumulator. Therefore, by comparing the pressure change trend information and the upward trend information, if they are different, it indicates that it is not a gas leak, because a gas leak would cause the pressure change to become larger and larger, showing an upward trend. Therefore, by comparing the individual test pressure curve information with the liquid leak pressure curve information, if they are different, it can be determined that the device is damaged; if they are the same, it can be determined that there is a liquid leak. This will prevent the diaphragm accumulator from being misjudged as having a problem with its airtightness due to hydraulic system issues, thereby improving the accuracy of diaphragm accumulator airtightness detection.

[0053] Optionally, the steps for obtaining pressure change trend information from pressure detection data include:

[0054] The pressure detection information is analyzed to determine the comparative pressure information;

[0055] The liquid comparative pressure information is determined by analyzing the comparative pressure information and test plan information.

[0056] Calculate the difference between the comparative pressure information and the liquid comparative pressure information, and define the calculated difference as the pressure change information;

[0057] The pressure change trend is determined by analyzing the comparative pressure information and pressure change information.

[0058] By adopting the above technical solution, the pressure change information is obtained by calculating the difference between the comparative pressure information and the liquid comparative pressure information. Then, the pressure change trend information is plotted with the comparative pressure information as the horizontal axis and the pressure change information as the vertical axis, thereby improving the convenience and accuracy of obtaining the pressure change trend information.

[0059] Secondly, this application provides a diaphragm accumulator airtightness testing system, which adopts the following technical solution:

[0060] A diaphragm accumulator airtightness testing system includes:

[0061] The acquisition module is used to acquire preparation completion trigger information and test plan information;

[0062] A memory for storing a program for a method of detecting the airtightness of a diaphragm accumulator as described in any of the preceding claims;

[0063] The processor and the program in the memory can be loaded and executed by the processor to implement a diaphragm accumulator airtightness detection method as described in any of the above.

[0064] By adopting the above technical solution, the control processor loads and executes a program stored in the memory for a diaphragm accumulator airtightness detection method. This enables the acquisition module to acquire a series of data related to the airtightness detection of the diaphragm accumulator, thereby controlling the hydraulic system to fill the liquid end of the diaphragm accumulator with liquid to stimulate the pressure change at the gas end. The pressure at the liquid end reflects the pressure at the gas end, and when the two are different, it can be determined that there is a leak at the gas end, so that even a small leak will not be ignored, thus improving the accuracy of the diaphragm accumulator airtightness detection.

[0065] Thirdly, this application provides a computer storage medium capable of storing corresponding programs, which facilitates improving the accuracy of airtightness detection of diaphragm accumulators, and adopts the following technical solution:

[0066] A computer-readable storage medium storing a computer program that can be loaded by a processor and executed for any of the above-described methods for detecting the airtightness of a diaphragm accumulator.

[0067] By adopting the above technical solution, a computer program for a method of detecting the air tightness of a diaphragm accumulator is stored in a computer-readable storage medium. The processor loads and executes the computer program in the storage medium, causing the hydraulic system to fill the liquid end of the diaphragm accumulator with liquid to stimulate the pressure change at the gas end. The pressure at the liquid end reflects the pressure at the gas end, and when the two are different, it can be determined that there is a leak at the gas end, so that even a small leak will not be ignored, thereby improving the accuracy of the air tightness detection of the diaphragm accumulator.

[0068] In summary, this application includes at least one of the following beneficial technical effects:

[0069] 1. By controlling the hydraulic system to perform a liquid filling test on the diaphragm accumulator, the pressure detection information of the diaphragm accumulator is detected. Based on the comparison between the pressure detection information and the liquid pressure information, it is determined whether the pressure at the gas end of the diaphragm accumulator changes when the liquid end pressure changes. Even in the case of very small leakage, the pressure change can be detected in real time, thereby improving the accuracy of the airtightness detection of the diaphragm accumulator.

[0070] 2. By comparing the filling time information with the baseline filling time information after the hydraulic system fills the liquid into the liquid end of the diaphragm accumulator, it can be determined whether the hydraulic system has completed filling. After confirming that the filling is complete, the hydraulic system is then controlled to detect the basic pressure information, so that the detected pressure does not contain useless pressure changes during the filling process. This allows the basic pressure detection information under different filling pressures to be correlated to obtain pressure detection information, thereby improving the accuracy of the pressure detection information.

[0071] 3. When the test pattern information does not meet the requirements of the step pattern information, it indicates that the test pressure is changing randomly. When testing with random pressure, the hydraulic system needs to constantly change the liquid pressure. Therefore, according to the step test method, the hydraulic system is controlled to fill the liquid end of the diaphragm accumulator with liquid. After one liquid pressure test is completed, the liquid pressure is raised or lowered to the next liquid pressure based on that liquid pressure for testing, thereby improving the convenience of filling the hydraulic system with liquid. Attached Figure Description

[0072] Figure 1 This is a flowchart of a method for testing the airtightness of a diaphragm accumulator according to an embodiment of this application.

[0073] Figure 2 This is a flowchart of the steps in this application embodiment to control a preset hydraulic system to perform a filling test on a diaphragm accumulator based on test plan information to determine pressure detection information.

[0074] Figure 3 This is the flowchart of the step in this application embodiment whereby the hydraulic system is controlled to fill the liquid terminal of the diaphragm accumulator with liquid according to the test sequence number information and the corresponding test pressure information. Figure 1 .

[0075] Figure 4 This is a flowchart of the steps in this application embodiment whereby the hydraulic system is controlled to fill the liquid end of the diaphragm accumulator with liquid according to a preset step test method.

[0076] Figure 5 This is the flowchart of the step in this application embodiment whereby the hydraulic system is controlled to fill the liquid terminal of the diaphragm accumulator with liquid according to the test sequence number information and the corresponding test pressure information. Figure 2 .

[0077] Figure 6 This is a flowchart of the verification steps for pressure detection information in an embodiment of this application.

[0078] Figure 7 This is a flowchart of the steps for obtaining pressure change trend information from pressure detection information in an embodiment of this application. Detailed Implementation

[0079] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figures 1-7 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the application.

[0080] This application discloses a method for detecting the airtightness of a diaphragm accumulator. Specifically, it discloses a processing terminal and a hydraulic system. The processing terminal and the hydraulic system are connected via data cables to achieve data interaction and control. After receiving the diaphragm accumulator's preparation completion trigger information, the processing terminal acquires and retrieves test plan information. Based on the test plan information, it controls the hydraulic system to perform a liquid filling test on the diaphragm accumulator and detects the pressure detection information. The processing terminal determines the liquid pressure information based on the pressure detection information and the test plan information. If the two are different, it indicates that during liquid filling at the test pressure, air leakage at the air end caused the detected pressure to not reach the test pressure. Therefore, a non-compliance prompt is issued, thereby improving the accuracy of the diaphragm accumulator airtightness detection.

[0081] Reference Figure 1 This application discloses a method for testing the airtightness of a diaphragm accumulator, comprising the following steps:

[0082] Step S100: Obtain the preparation completion trigger information of the diaphragm accumulator.

[0083] The "ready to complete trigger information" refers to the trigger data that indicates the diaphragm accumulator is ready to begin airtightness testing. This information is input by the operator at the processing terminal when the operator fills the gas end of the diaphragm accumulator with gas at a preset pressure and seals it, and then connects the liquid end of the diaphragm accumulator to the hydraulic system.

[0084] Step S101: Obtain the test plan information of the diaphragm accumulator based on the preparation completion trigger information.

[0085] The test plan information refers to the pressure change plan for the diaphragm accumulator, including the test sequence number and test pressure. The test sequence number is 1, 2, 3, etc., and the test pressure is determined by the operator according to the actual specifications of the diaphragm accumulator. The operator maps the test sequence number to the test pressure to form a data table, and then inputs and stores the data table in the processing terminal. After receiving the preparation completion trigger information, the processing terminal responds to the preparation completion trigger information by calling up the test plan information.

[0086] Step S102: Control the preset hydraulic system to perform a liquid filling test on the diaphragm accumulator according to the test plan information to determine the pressure detection information.

[0087] In this process, after the processing terminal calls the test plan information, it controls the hydraulic system to fill the liquid end of the diaphragm accumulator with the test pressure according to the test sequence number and test pressure corresponding to the test plan information, thereby changing the air pressure at the air end and obtaining pressure detection information to assist in the airtightness detection.

[0088] A hydraulic system refers to a device connected to the liquid end of a diaphragm accumulator to control the flow of liquid into the diaphragm at a corresponding pressure to compress the diaphragm and assist in airtightness testing. It includes an electric motor-driven hydraulic pump, directional control valves, pressure control valves, flow control valves, pipelines, a tank, and sensors for monitoring pressure. In this application, the hydraulic system is only used to assist in airtightness testing and is not used to convert hydraulic energy into mechanical energy. Pressure detection information refers to the pressure at the air end after the liquid end of the diaphragm accumulator has stabilized following the test pressure. Once the liquid end stabilizes, the pressures at the liquid end and air end are equal, thus allowing the hydraulic system to indirectly obtain the air end pressure by detecting the pressure at the liquid end. The specific method is described in [reference needed]. Figure 2 The steps.

[0089] Step S103: Analyze the pressure detection information and test plan information to determine the fluid pressure information of the hydraulic system.

[0090] Among them, the liquid pressure information refers to the correct pressure of the liquid currently being charged into the diaphragm accumulator in the hydraulic system. It is obtained by the processing terminal calling the test pressure with the same sequence number in the test plan information according to the sequence number of the pressure detection information. For example, if the sequence number of the pressure detection information is 1, then the test pressure with the same sequence number 1 in the test plan information is called.

[0091] Step S104: Determine whether the pressure detection information meets the requirements of the liquid pressure information.

[0092] The requirement for liquid pressure information is that the pressure value corresponding to the liquid pressure information is equal. The processing terminal determines whether the pressure value corresponding to the pressure detection information is equal to the pressure value corresponding to the liquid pressure information, thereby determining whether the gas pressure at the gas end is equal to the correct liquid pressure, and further determining whether there is a gas leak at the gas end.

[0093] Step S1041: If it does not meet the requirements, a prompt will be made according to the preset non-compliance prompt information.

[0094] If the processing terminal determines that the pressure value corresponding to the pressure detection information is not equal to the pressure value corresponding to the liquid pressure information, it indicates that the hydraulic system is filling the liquid with the correct hydraulic pressure, but due to gas leakage at the gas end, the hydraulic pressure causes the gas to be forced out. When the liquid and gas are in balance, the hydraulic pressure is lower than the correct hydraulic pressure, so a prompt is made according to the non-compliance prompt information.

[0095] The non-compliance message refers to the message indicating that the airtightness of the diaphragm accumulator is non-compliant, which can be displayed on the processing terminal in text and voice formats.

[0096] Step S1042: If it meets the requirements, then a prompt will be given according to the preset qualified prompt information.

[0097] If the processing terminal determines that the pressure value corresponding to the pressure detection information is equal to the pressure value corresponding to the liquid pressure information, it indicates that the air pressure is equal to the correct hydraulic pressure, and there is no gas leakage at the air end. Therefore, a prompt is made according to the qualified prompt information.

[0098] The qualified prompt message refers to the prompt message indicating that the airtightness of the diaphragm accumulator is qualified, which can be displayed on the processing terminal in the form of text and voice.

[0099] Reference Figure 2 The steps for controlling a preset hydraulic system to perform a filling test on a diaphragm accumulator according to the test plan information to determine the pressure detection information include:

[0100] Step S200: Analyze the test plan information to determine the test pressure information and the test sequence number information corresponding to the test pressure information.

[0101] Among them, the test pressure information refers to the test pressure in the test plan, and the test sequence number information refers to the sequence number corresponding to the test pressure, which is obtained by the processing terminal after recognizing the test plan information.

[0102] Step S201: Control the hydraulic system to fill the liquid end of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information.

[0103] After the processing terminal determines the test sequence number and corresponding test pressure information, it controls the hydraulic system to fill the liquid end of the diaphragm accumulator according to the test sequence number and test pressure information. The specific control method is described in [reference needed]. Figure 3 This process provides a foundation for subsequent detection of air pressure changes.

[0104] Step S202: Obtain the actual test pressure information and filling time information of the hydraulic system.

[0105] The actual test pressure information refers to the pressure value at which the hydraulic system is currently filling the diaphragm accumulator with liquid. This pressure is obtained by the processing terminal controlling the hydraulic system to call up the test pressure during filling. The filling time information refers to the time it takes for the hydraulic system to fill the diaphragm accumulator with liquid, which is obtained by timing with a timer.

[0106] Step S203: Analyze the actual test pressure information and the preset pressure-time relationship information to determine the baseline filling time information.

[0107] Among them, the pressure-time relationship information refers to a database that stores the correspondence between test pressure and filling time. The test pressure and filling time are directly proportional, that is, the greater the test pressure, the longer the filling time. The operator stores the correspondence between the two in the database.

[0108] The baseline filling time information refers to the standard time when filling with liquid at the current test pressure. It is obtained by the processing terminal by inputting the pressure value corresponding to the actual test pressure information into the database corresponding to the pressure-time relationship information and matching it.

[0109] Step S204: Determine whether the filling time information meets the requirements of the baseline filling time information.

[0110] The requirement for the reference filling time information is that the time value corresponding to the reference filling time information must be consistent. The processing terminal determines whether the time value corresponding to the filling time information is consistent with the time value corresponding to the reference filling time information, thereby determining whether the hydraulic system has changed the pressure at the liquid end of the diaphragm accumulator to the test pressure, providing data support for subsequent pressure detection information acquisition.

[0111] Step S2041: If it does not meet the requirements, continue to obtain the filling time information for repeated judgment.

[0112] If the processing terminal determines that the time value corresponding to the filling time information is inconsistent with the time value corresponding to the reference filling time information, the surface hydraulic system has not yet completed filling. Therefore, the filling time information is continuously detected to continuously monitor the filling status of the hydraulic system.

[0113] Step S2042: If the condition is met, control the hydraulic system to obtain the basic pressure detection information, and continue to control the hydraulic system to fill the liquid end of the diaphragm accumulator with liquid according to the test sequence information and the corresponding test pressure information for cyclic testing.

[0114] If the processing terminal determines that the time value corresponding to the liquid filling time information is consistent with the time value corresponding to the reference liquid filling time information, it indicates that the liquid filling system has completed liquid filling. Therefore, the liquid filling system is locked within the preset detection time, so that the sensor detects the pressure at the liquid end to obtain the basic pressure detection information. After the detection time, the hydraulic system is controlled to fill the liquid into the liquid end of the diaphragm accumulator according to the test sequence information and the corresponding test pressure information, so that the test can continue with the remaining test pressure.

[0115] Basic pressure detection information refers to the change in pressure at the liquid end of a diaphragm accumulator over a certain period of time after the hydraulic system fills the liquid with test pressure. The pressure value is obtained by the pressure sensor in the hydraulic system and associated with the test sequence number.

[0116] Step S20421: Associate the basic pressure detection information to generate pressure detection information.

[0117] In this step, the pressure detection information is consistent with the pressure detection information in step S102. After the hydraulic system completes the test according to the test plan information, all the detected basic pressure detection information is stored in a data packet to obtain the pressure detection information.

[0118] Reference Figure 3 The steps of controlling the hydraulic system to fill the liquid terminal of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information include:

[0119] Step S300: Analyze the test sequence number information and the corresponding test pressure information to determine the test pattern information.

[0120] Among them, the test pattern information refers to the change pattern of test pressure with the test sequence number, including two types of patterns: one is a disordered pattern, that is, the test pressure changes randomly with the increase of the test sequence number, sometimes increasing and sometimes decreasing; the other is a step-like pattern, that is, the test pressure increases or decreases with the increase of the test sequence number, which is determined by the processing terminal after analyzing the test sequence number information and the corresponding test pressure information.

[0121] Step S301: Determine whether the test pattern information meets the requirements of the preset step pattern information.

[0122] Among them, the step pattern information refers to the pattern of test pressure increasing or decreasing as the sequence number increases. The requirement for the step pattern information is that the pattern corresponding to the step pattern information is consistent, and it is stored in the processing terminal by the operator.

[0123] By processing the terminal to determine whether the pattern corresponding to the test pattern information is consistent with the pattern corresponding to the step pattern information, it can be determined whether the hydraulic system can be directly controlled to fill the fluid according to the sequence number, thus providing data support for subsequent fluid filling.

[0124] Step S3011: If the conditions are met, the corresponding test pressure information is selected sequentially according to the sequence number information to control the hydraulic system to fill the liquid into the liquid end of the diaphragm accumulator.

[0125] If the processing terminal determines that the pattern corresponding to the test pattern information is consistent with the pattern corresponding to the step pattern information, it indicates that the test pressure increases or decreases as the sequence number increases. Therefore, after the hydraulic system completes filling with a test pressure, it can continue filling or releasing liquid with the next test pressure based on the test pressure. Thus, according to the sequence number information, the corresponding test pressure information is selected sequentially to control the hydraulic system to fill the liquid into the liquid end of the diaphragm accumulator, thereby improving the convenience and standardization of filling.

[0126] Step S3012: If it does not meet the requirements, the hydraulic system is controlled to fill the liquid end of the diaphragm accumulator according to the preset step test method.

[0127] If the pattern corresponding to the test pattern information determined by the processing terminal is inconsistent with the pattern corresponding to the step pattern information, it indicates that the test pressure changes randomly as the sequence number increases. If the liquid is filled with random test pressure, the hydraulic system will frequently need to be replaced for filling or draining, which will cause inconvenience in filling. Therefore, the hydraulic system is controlled to fill the liquid into the liquid end of the diaphragm accumulator according to the step test method, thereby improving the convenience and standardization of filling.

[0128] The stepped testing method refers to a method of controlling the hydraulic system to fill the liquid terminal of a diaphragm accumulator in a stepped manner when the test pressure is disordered. For details, please refer to [link / reference needed]. Figure 4 The steps are stored in the processing terminal by the operator.

[0129] Reference Figure 4 The steps for controlling the hydraulic system to fill the liquid terminal of the diaphragm accumulator according to the preset stepped test method include:

[0130] Step S400: Perform a step-by-step sorting based on the test pressure information to determine the basic test sequence information.

[0131] Among them, the basic test sequence information refers to the pressure sequence obtained by sorting the test pressures in a step-by-step manner. This sequence is obtained by the processing terminal sorting the test pressure information from smallest to largest or from largest to smallest.

[0132] Step S401: Based on the test pressure corresponding to the basic test sequence information, call and associate the corresponding test sequence number information to generate test pressure sequence information.

[0133] Among them, the test pressure sequence information refers to the pressure sequence in which the hydraulic system is filled with fluid. The processing terminal calls the test sequence number information corresponding to the pressure according to the pressure corresponding to the basic test sequence information, and then associates the sequence number with the corresponding pressure to obtain the pressure sequence, such as pressure A, pressure B, pressure C, etc.

[0134] Step S402: Select the test pressure one by one according to the test pressure sequence information and control the hydraulic system to fill the liquid into the liquid end of the diaphragm accumulator.

[0135] In this process, after the processing terminal determines the test pressure sequence information, the processing terminal selects the test pressure one by one according to the test pressure sequence information. For example, it first selects pressure 1A and controls the hydraulic system to fill the liquid into the liquid end of the diaphragm accumulator according to pressure A. Then, it fills the liquid according to pressure 3B and so on, so that it can continue to fill or release liquid under the next test pressure based on the previous test pressure, thereby improving the convenience and standardization of filling.

[0136] Reference Figure 5 The step of controlling the hydraulic system to fill the liquid terminal of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information also includes:

[0137] Step S500: Obtain the current test pressure information of the hydraulic system.

[0138] The current test pressure information refers to the pressure at which the hydraulic system is currently filling the liquid end of the diaphragm accumulator. This pressure is obtained by the processing terminal before controlling the hydraulic system to fill the liquid, based on the test pressure.

[0139] Step S501: Control the hydraulic system to fill the liquid end of the diaphragm accumulator with liquid according to the current test pressure information, and obtain the filling number information.

[0140] After the processing terminal determines the current test pressure information, it controls the hydraulic system to fill the diaphragm accumulator with liquid according to the corresponding pressure. The terminal also monitors the number of filling cycles to provide data support for determining whether the hydraulic system has completed the test pressure measurement. The number of filling cycles refers to the number of times the processing system controls the hydraulic system to fill with liquid based on the current test pressure. A count is performed each time the system fills and releases liquid, and the accumulated count is sent to the processing terminal.

[0141] Step S502: Determine whether the filling number information meets the preset cycle number information requirements.

[0142] Among them, the cycle count information refers to the number of times the liquid is circulated in each test pressure. The specific value is determined by the operator based on the actual situation. The requirement for the cycle count information is that the number of cycles is equal to the number of cycles. The operator stores the cycle count information in the processing terminal.

[0143] The processing terminal determines whether the number of filling times corresponds to the number of cycles, thereby determining whether the hydraulic system has completed filling to the test pressure.

[0144] Step S5021: If the condition is met, continue to obtain the next current test pressure information to cycle through the filling process.

[0145] If the processing terminal determines that the number of times the filling count information corresponds to the number of times the cycle count information is equal, it indicates that the hydraulic system has completed the cyclic filling of the diaphragm accumulator with the test pressure. Therefore, it continues to obtain the next current test pressure information and continues to fill the diaphragm accumulator.

[0146] Step S5022: If it does not meet the requirements, continue to control the hydraulic system to fill the liquid end of the diaphragm accumulator with liquid, and continue to obtain the liquid filling number information for cyclic judgment.

[0147] If the processing terminal determines that the number of times the filling count information corresponds to the number of times the cycle count information is not equal to the number of times the cycle count information corresponds to, it indicates that the hydraulic system has only completed part of the filling of the diaphragm accumulator with the test pressure. Therefore, the control system continues to fill the liquid end of the diaphragm accumulator with the test pressure and continues to detect the filling count information to continuously monitor the change in the filling count.

[0148] Reference Figure 6 When the pressure detection information does not meet the requirements of the liquid pressure information, a verification step for the pressure detection information is also included. The specific steps include:

[0149] Step S600: Obtain pressure change trend information from pressure detection information.

[0150] Among them, the pressure change trend information refers to the changing trend of the absolute value of the difference between the pressure detection information and the liquid pressure. For specific methods of obtaining this information, please refer to [reference needed]. Figure 7 The steps.

[0151] Step S601: Determine whether the pressure change trend information meets the preset requirements of the upward trend information.

[0152] Among them, the upward trend information refers to the trend that the absolute value of the difference between the detection pressure and the test pressure increases as the test pressure changes. The requirement for the upward trend information is that the trend corresponding to the upward trend information is consistent and is stored in the processing terminal by the operator.

[0153] By processing the terminal to determine whether the trend corresponding to the pressure change trend information is consistent with the trend corresponding to the upward trend information, it can be determined whether there is a gas leak at the gas end of the diaphragm accumulator, causing the gas to decrease with each pressure test, resulting in a larger and larger pressure difference.

[0154] Step S6011: If the condition is met, retain the pressure detection information.

[0155] If the processing terminal determines that the trend corresponding to the pressure change trend information is consistent with the trend corresponding to the upward trend information, it indicates that there is a gas leak at the gas end of the diaphragm accumulator, which causes the gas to decrease with each pressure test, resulting in a larger and larger pressure difference. Therefore, the judgment that the pressure detection information does not meet the requirements of the liquid pressure information is correct, and the pressure detection information is retained.

[0156] Step S6012: If it does not meet the requirements, the pressure detection information is discarded, and the individual test pressure curve information is obtained.

[0157] If the trend corresponding to the pressure change trend information determined by the processing terminal is inconsistent with the trend corresponding to the upward trend information, it indicates that there is no gas leakage at the gas end of the diaphragm accumulator. It may be due to liquid leakage or damage to the hydraulic system that the detected pressure information is not equal to the liquid pressure. Therefore, the pressure detection information is discarded, and the individual test pressure curve information is detected to provide data support for subsequent determination of the cause of the pressure detection information not being equal to the liquid pressure.

[0158] The information of a single test pressure curve refers to the curve of the detected pressure changing over time when the hydraulic system starts to fill with fluid at the test pressure. It is obtained by collecting the detected pressure of the hydraulic system and plotting it in conjunction with time.

[0159] Step S602: Determine whether the information of a single test pressure curve meets the requirements of the preset liquid leakage pressure curve information.

[0160] Among them, the liquid leakage pressure curve information refers to the curve of the detected pressure changing over time when there is a liquid leakage. It usually rises to the liquid pressure first, and after the hydraulic system is locked, the detected pressure gradually decreases. The requirement for the liquid leakage pressure curve information is that the changing trend of the curve corresponding to the liquid leakage pressure curve information is consistent.

[0161] By processing the terminal, it is determined whether the changing trend of the curve corresponding to the individual test pressure information is consistent with the changing trend of the curve corresponding to the liquid leakage pressure information, thereby determining whether the pressure detection information is not equal to the liquid pressure due to liquid leakage.

[0162] Step S6021: If the condition is met, a prompt will be issued according to the preset liquid leakage prompt information.

[0163] If the processing terminal determines that the changing trend of the curve corresponding to a single test pressure curve is consistent with the changing trend of the curve corresponding to the liquid leakage pressure curve, it indicates that the pressure detection information is not equal to the liquid pressure due to liquid leakage, and therefore a prompt is made based on the liquid leakage prompt information.

[0164] Liquid leak alerts are messages used to indicate the presence of liquid leaks, which can be output to the processing terminal in the form of text and voice.

[0165] Step S6022: If it does not meet the requirements, a prompt will be made according to the preset device damage prompt information.

[0166] If the processing terminal determines that the trend of change of the curve corresponding to the information of a single test pressure curve is inconsistent with the trend of change of the curve corresponding to the information of liquid leakage pressure, it indicates that the pressure detection information is not equal to the liquid pressure due to insufficient filling of the hydraulic system or inaccurate detection by the pressure sensor. Therefore, a prompt is made according to the device damage prompt information.

[0167] Device malfunction alerts are messages used to indicate device malfunction, which can be output to the processing terminal in the form of text and voice.

[0168] Reference Figure 7 The steps for obtaining pressure change trend information from pressure detection data include:

[0169] Step S700: Analyze the pressure detection information to determine the comparison pressure information.

[0170] Among them, the comparative pressure information refers to the detection pressure corresponding to any serial number in the pressure detection information, which is obtained by the processing terminal from the pressure data corresponding to the pressure detection information.

[0171] Step S701: Analyze the comparative pressure information and test plan information to determine the liquid comparative pressure information.

[0172] Among them, the liquid comparison pressure information refers to the liquid pressure that generates the comparison pressure information. It is obtained by the processing terminal by looking up the liquid pressure with the same serial number in the test plan information according to the serial number corresponding to the comparison pressure information.

[0173] Step S702: Calculate the difference between the comparative pressure information and the liquid comparative pressure information, and define the calculated difference as pressure change information.

[0174] Among them, the pressure change information is compared with the liquid pressure information, and the absolute value of the difference between the two is calculated by the processing terminal.

[0175] Step S703: Analyze the pressure information and pressure change information to determine the pressure change trend information.

[0176] In this step, the pressure change trend information is consistent with the pressure change trend information in step S600. It is obtained by the processing terminal by plotting and identifying the information with the comparison pressure information as the horizontal axis and the pressure difference corresponding to the pressure change information as the vertical axis.

[0177] Based on the same inventive concept, embodiments of the present invention provide an airtightness testing system for a diaphragm accumulator, comprising:

[0178] The acquisition module is used to acquire preparation completion trigger information, test plan information, actual test pressure information, filling time information, basic pressure detection information, current test pressure information, filling number information, pressure change trend information, and individual test pressure curve information;

[0179] A memory for storing a program for a method of detecting the airtightness of a diaphragm accumulator;

[0180] The processor and memory can load and execute programs to implement a method for detecting the airtightness of a diaphragm accumulator.

[0181] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0182] This invention provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed to perform a method for detecting the airtightness of a diaphragm accumulator.

[0183] Computer storage media include, for example, USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media that can store program code.

[0184] Based on the same inventive concept, embodiments of the present invention provide a smart terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded and executed by the processor to perform a method for detecting the airtightness of a diaphragm accumulator.

[0185] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0186] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features.

Claims

1. A method for testing the airtightness of a diaphragm accumulator, characterized in that, include: Obtain the preparation completion trigger information of the diaphragm accumulator; Based on the preparation completion trigger information, the test plan information of the diaphragm accumulator is obtained. The test plan information refers to the gas pressure change plan of the diaphragm accumulator, including the test sequence number and test pressure. According to the test plan information, the preset hydraulic system is controlled to perform a liquid filling test on the diaphragm accumulator to determine the pressure detection information. The pressure detection information is that the hydraulic system fills the liquid end of the diaphragm accumulator with liquid at the test pressure. After the liquid end stabilizes, the pressure at the liquid end and the pressure at the gas end are equal, so that the hydraulic system detects the pressure at the liquid end and indirectly obtains the pressure at the gas end. The hydraulic system's fluid pressure information is determined by analyzing the pressure detection information and test plan information. The fluid pressure information is the correct pressure of the fluid currently being charged into the diaphragm accumulator of the hydraulic system. The processing terminal retrieves the test pressure with the same sequence number from the test plan information based on the sequence number of the pressure corresponding to the pressure detection information. To determine whether the pressure detection information meets the requirements of the liquid pressure information, the requirement of the liquid pressure information is that the pressure value corresponding to the pressure detection information is equal to the pressure value corresponding to the liquid pressure information. If it does not meet the requirements, a prompt will be displayed according to the preset non-compliance message; If it meets the requirements, a prompt will be given according to the preset qualified prompt information; The steps for controlling a pre-set hydraulic system to perform a filling test on a diaphragm accumulator according to the test plan information to determine pressure detection information include: The test plan information is analyzed to determine the test stress information and the corresponding test sequence number information. Based on the test sequence number and the corresponding test pressure information, the hydraulic system is controlled to fill the liquid end of the diaphragm accumulator with liquid. Obtain actual test pressure and filling time information of the hydraulic system; The baseline filling time is determined by analyzing the actual test pressure information and the preset pressure-time relationship information. Determine whether the filling time information meets the requirements of the baseline filling time information. The requirement of the baseline filling time information is that the time value corresponding to the filling time information is consistent with the time value corresponding to the baseline filling time information. If it does not meet the requirements, continue to obtain filling time information for repeated judgment; If the conditions are met, the hydraulic system is controlled to obtain the basic pressure detection information, and continues to control the hydraulic system to fill the liquid end of the diaphragm accumulator with liquid according to the test sequence information and the corresponding test pressure information for cyclic testing. The basic pressure detection information is the change of liquid end pressure within a certain period of time after the hydraulic system fills the liquid end of the diaphragm accumulator with test pressure. The pressure value is obtained by the pressure sensor in the hydraulic system and associated with the test sequence number. Associate basic pressure detection information to generate pressure detection information.

2. The method for testing the airtightness of a diaphragm accumulator according to claim 1, characterized in that, The steps involved in controlling the hydraulic system to fill the liquid terminal of the diaphragm accumulator according to the test sequence number and corresponding test pressure information include: The test pattern information is determined by analyzing the test sequence number information and the corresponding test pressure information. Determine whether the test pattern information meets the requirements of the preset step pattern information; If the conditions are met, the corresponding test pressure information is selected sequentially according to the sequence number information to control the hydraulic system to fill the liquid into the liquid end of the diaphragm accumulator. If it does not meet the requirements, the hydraulic system will be controlled to fill the liquid end of the diaphragm accumulator according to the preset step test method.

3. The method for testing the airtightness of a diaphragm accumulator according to claim 2, characterized in that, The steps for controlling the hydraulic system to fill the liquid terminal of the diaphragm accumulator according to the preset stepped test method include: The basic test sequence information is determined by tiered sorting based on the test pressure information. Based on the basic test sequence information, test pressure is invoked and associated with the corresponding test sequence number information to generate test pressure sequence information; Based on the test pressure sequence information, the hydraulic system is controlled to charge the liquid into the liquid end of the diaphragm accumulator by selecting the test pressure one by one.

4. The method for testing the airtightness of a diaphragm accumulator according to claim 2, characterized in that, The steps of controlling the hydraulic system to fill the liquid terminal of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information also include: Obtain the current test pressure information of the hydraulic system; Based on the current test pressure information, the hydraulic system is controlled to fill the liquid end of the diaphragm accumulator with liquid and the number of filling times is obtained; Determine whether the filling number information meets the preset cycle number information requirements; If the conditions are met, continue to obtain the next current test pressure information to cycle through the filling process; If the condition is not met, the hydraulic system continues to be controlled to fill the liquid end of the diaphragm accumulator, and the number of filling times is continuously acquired for cyclical judgment.

5. The method for testing the airtightness of a diaphragm accumulator according to claim 1, characterized in that, When the pressure detection information does not meet the requirements of the liquid pressure information, a verification step for the pressure detection information is also included. The specific steps include: Obtain pressure change trend information from pressure detection data; Determine whether the pressure change trend information meets the preset requirements for upward trend information; If the conditions are met, retain the pressure detection information; If it does not meet the requirements, the pressure detection information is discarded, and the individual test pressure curve information is obtained. Determine whether the information from a single test pressure curve meets the requirements of the preset liquid leakage pressure curve information; If the conditions are met, a warning will be issued based on the preset liquid leak warning information; If it does not meet the requirements, a prompt will be issued based on the preset device malfunction message.

6. The method for testing the airtightness of a diaphragm accumulator according to claim 5, characterized in that, The steps to obtain pressure change trend information from pressure detection data include: The pressure detection information is analyzed to determine the comparative pressure information; The liquid comparative pressure information is determined by analyzing the comparative pressure information and test plan information. Calculate the difference between the comparative pressure information and the liquid comparative pressure information, and define the calculated difference as the pressure change information; The pressure change trend is determined by analyzing the comparative pressure information and pressure change information.

7. A diaphragm accumulator airtightness testing system, characterized in that, include The acquisition module is used to acquire preparation completion trigger information and test plan information; A memory for storing a program for a method of detecting the airtightness of a diaphragm accumulator as described in any one of claims 1 to 6; The processor and the program in the memory can be loaded and executed by the processor to implement the airtightness detection method for a diaphragm accumulator as described in any one of claims 1 to 6.

8. A computer-readable storage medium, characterized in that, The device stores a computer program that can be loaded by a processor and executed as described in any one of claims 1 to 6 for detecting the airtightness of a diaphragm accumulator.

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