Diaphragm type energy accumulator air tightness detection method and system and storage medium

Abstract

The invention relates to a diaphragm type energy accumulator airtightness detection method and system and a storage medium, and relates to the technical field of energy accumulators, and the method comprises the steps: obtaining the preparation completion triggering information of a diaphragm type energy accumulator; acquiring test plan information of the diaphragm type energy accumulator based on the preparation completion triggering information; according to the test plan information, controlling a preset hydraulic system to perform liquid filling test on the diaphragm type energy accumulator so as to determine pressure detection information; analyzing according to the pressure detection information and the test plan information to determine liquid pressure information of the hydraulic system; judging whether the pressure detection information meets the requirements of liquid pressure information or not; if not, prompting according to preset unqualified prompt information; and if yes, prompting according to preset qualified prompt information. The air tightness detection device has the effect of improving the air tightness detection accuracy of the diaphragm type energy accumulator.

Description

Technical Field

[0001] The present application relates to the field of accumulator technology, and in particular to a diaphragm accumulator air tightness detection method, system and storage medium. Background Art

[0002] A diaphragm accumulator is an energy storage device used in hydraulic systems. A welded diaphragm divides the internal space into two parts, one for storing compressed gas and the other connected to the hydraulic system's fluid. When the pressure in the hydraulic system increases, the fluid is pressed into the accumulator, compressing the gas; when the system pressure drops, the gas expands, pushing the stored fluid back into the hydraulic system.

[0003] In the related art, the air tightness test of the diaphragm accumulator usually adopts the ammonia inspection method, that is, ammonia is charged into the charging end of the diaphragm accumulator, and after the diaphragm accumulator is sealed, concentrated hydrochloric acid is applied to the external joints of the diaphragm accumulator, and then it is observed whether there is a white precipitate on the part where the concentrated hydrochloric acid is applied. If not, it indicates that the sealing is good; if white precipitate appears, it indicates that ammonia is leaking from here.

[0004] With regard to the above-mentioned related technologies, the air tightness of the diaphragm accumulator is detected by the chemical reaction of concentrated hydrochloric acid and ammonia. A large amount of ammonia leakage is required to be observed. However, for a diaphragm accumulator with slow leakage, very little ammonia is leaked within a certain period of time, and concentrated hydrochloric acid cannot react chemically within the effective time, thereby mistakenly determining that the air tightness of the diaphragm accumulator with poor air tightness is good, resulting in low accuracy in air tightness detection of the diaphragm accumulator, and there is still room for improvement. Summary of the invention

[0005] In order to improve the accuracy of air tightness detection of a diaphragm accumulator, the present application provides a method, system and storage medium for air tightness detection of a diaphragm accumulator.

[0006] In a first aspect, the present application provides a method for detecting air tightness of a diaphragm accumulator, which adopts the following technical solution: A method for detecting air tightness of a diaphragm accumulator, comprising: Obtaining the 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 filling test on a diaphragm accumulator according to the test plan information to determine pressure detection information; Analyze the pressure detection information and the test plan information to determine the fluid pressure information of the hydraulic system; Determine whether the pressure detection information meets the requirements of liquid pressure information; If it does not meet the requirements, a prompt will be given according to the preset unqualified prompt information; If it meets the requirements, a prompt will be given according to the preset qualified prompt information.

[0007] 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. When the pressure at the liquid end of the diaphragm accumulator changes, it is determined based on the comparison between the pressure detection information and the liquid pressure information whether the pressure at the gas end changes accordingly. Even in the case of very small leakage, the pressure change can be detected in real time, thereby improving the accuracy of the air tightness detection of the diaphragm accumulator.

[0008] 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: Analyze the test plan information to determine the test pressure information and the test sequence number information corresponding to the test pressure information; Control the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information; Obtain the actual test pressure information and filling time information of the hydraulic system; Analyze the actual test pressure information and the preset pressure-time relationship information to determine the reference filling time information; Determine whether the filling time information meets the requirements of the reference filling time information; If it does not meet the requirement, the filling time information is continuously obtained for cyclic judgment; If it meets the requirements, the hydraulic system is controlled to obtain the basic pressure detection information, and the hydraulic system is continued to be controlled to charge the liquid into the liquid end of the diaphragm accumulator for cyclic testing according to the test sequence number information and the corresponding test pressure information; The basic pressure detection information is associated to generate pressure detection information.

[0009] 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 and the reference filling time information are compared to determine whether the hydraulic system has completed the filling. After determining that the filling is completed, the hydraulic system is controlled to detect the basic pressure detection information without causing useless pressure changes in the filling process in the detected pressure, thereby associating the basic pressure detection information under different filling pressures to obtain pressure detection information, thereby improving the accuracy of the pressure detection information.

[0010] Optionally, the step of controlling the hydraulic system to charge liquid into the liquid end of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information includes: Analyze the test sequence number information and the corresponding test pressure information to determine the test rule information; Determine whether the test regularity information meets the requirements of the preset step regularity information; If it is in compliance, then the corresponding test pressure information is selected in sequence according to the sequence of the test number information to control the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator; If it does not meet the requirements, the hydraulic system is controlled to charge the liquid into the liquid end of the diaphragm accumulator according to the preset step test method.

[0011] By adopting the above technical scheme, when it is determined that the test law information does not meet the requirements of the step law information, it indicates that the test pressure changes disorderly. When testing with disordered 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 into the liquid end of the diaphragm accumulator. After a liquid pressure test is completed, the liquid pressure is increased or decreased to the next liquid pressure for testing based on the liquid pressure, thereby improving the convenience of filling the hydraulic system with liquid.

[0012] Optionally, the step of controlling the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to a preset step test method includes: Perform step-by-step sorting based on the test pressure information to determine basic test sequence information; Calling and associating the corresponding test sequence number information according to the test pressure corresponding to the basic test sequence information to generate the test pressure sequence information; The test pressures are selected one by one according to the test pressure sequence information to control the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator.

[0013] By adopting the above technical scheme, when it is determined that the test pressure information corresponding to the test number information is disordered, the test pressure information is sorted in a step-by-step manner to obtain basic test sequence information, and then the test number information corresponding to the test pressure is associated with the basic test sequence information to obtain the test pressure sequence information. According to the test pressure sequence information, the test pressures are selected one by one to control the hydraulic system to fill the liquid into the liquid end, so that the hydraulic system can increase or decrease the liquid pressure to the next liquid pressure for testing based on the liquid pressure after completing the filling of a test pressure, thereby improving the convenience of filling the hydraulic system with liquid.

[0014] Optionally, the step of controlling the hydraulic system to charge liquid into the liquid end of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information further includes: Get the current test pressure information of the hydraulic system; Control the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the current test pressure information, and obtain the charging times information; Determine whether the filling times information meets the requirements of the preset cycle times information; If it meets the requirements, continue to obtain the next current test pressure information to circulate the filling; If it does not meet the requirements, the hydraulic system continues to be controlled to charge the liquid into the liquid end of the diaphragm accumulator, and the number of charging times is continuously obtained for cyclic judgment.

[0015] By adopting the above technical solution, when the hydraulic system charges liquid into the liquid end of the diaphragm accumulator, the filling times information is detected. When the filling times information does not meet the requirement of the cycle times information, the hydraulic system continues to control the liquid to charge the liquid into the liquid end of the diaphragm accumulator, so as to cyclically charge and discharge the liquid under a test pressure, perform a cyclic test on the air tightness of the diaphragm accumulator, and thus improve the accuracy of the air tightness detection of the diaphragm accumulator.

[0016] Optionally, when the pressure detection information does not meet the requirements of the liquid pressure information, a verification step of the pressure detection information is further included, and the specific steps include: Obtain pressure change trend information of pressure detection information; Determine whether the pressure change trend information meets the requirements of the preset upward trend information; If it meets the requirements, the pressure detection information is retained; If it does not meet the requirements, the pressure detection information is discarded and the single test pressure curve information is obtained; Determine whether the single test pressure curve information meets the requirements of the preset liquid leakage pressure curve information; If it meets the requirements, a prompt will be given according to the preset liquid leakage prompt information; If it does not meet the requirements, a prompt will be given according to the preset device damage prompt information.

[0017] 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 leakage at the gas end of the diaphragm accumulator. Therefore, the pressure change trend information and the rising trend information are compared. When it is determined that the two are different, it indicates that there is no gas leakage, because gas leakage will cause the pressure change to become larger and larger, showing an upward trend. Therefore, the single test pressure curve information is compared with the liquid leakage pressure curve information. When the two are different, it can be determined that the device is damaged. When they are the same, it is determined that there is liquid leakage. Therefore, the air tightness of the diaphragm accumulator will not be misjudged due to problems with the hydraulic system, thereby improving the accuracy of the air tightness detection of the diaphragm accumulator.

[0018] Optionally, the step of obtaining pressure change trend information of pressure detection information includes: Analyzing the pressure detection information to determine comparative pressure information; analyzing the contrast pressure information and the test plan information to determine the fluid contrast pressure information; Calculating a difference between the contrast pressure information and the liquid contrast pressure information, and defining the calculated difference as pressure change information; The pressure change trend information is determined by analyzing the comparative pressure information and the pressure change information.

[0019] By adopting the above technical solution, the difference between the contrast pressure information and the liquid contrast pressure information is calculated to obtain the pressure change information, and then the pressure change trend information is obtained by plotting with the contrast 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.

[0020] In a second aspect, the present application provides a diaphragm accumulator air tightness detection system, which adopts the following technical solution: A diaphragm accumulator air tightness detection system, comprising: An acquisition module is used to obtain the preparation completion trigger information and test plan information; A memory for storing a program of a diaphragm accumulator air tightness detection method as described in any one of the above items; The program in the processor memory can be loaded and executed by the processor to implement a diaphragm accumulator air tightness detection method as described in any one of the above items.

[0021] By adopting the above technical solution, the control processor loads and executes a program of a diaphragm accumulator air tightness detection method stored in the memory, so that the acquisition module obtains a series of data related to the diaphragm accumulator air tightness detection, thereby controlling the hydraulic system to fill the liquid end of the diaphragm accumulator to stimulate the pressure change of the gas end, so that the gas end pressure is reflected according to the liquid end pressure. When the two are different, it can be determined that there is a leak at the gas end, and it will not be ignored due to a small leak, thereby improving the accuracy of the diaphragm accumulator air tightness detection.

[0022] In a third aspect, the present application provides a computer storage medium capable of storing a corresponding program, which has the characteristic of facilitating the improvement of the accuracy of air tightness detection of a diaphragm accumulator, and adopts the following technical solution: A computer-readable storage medium stores a computer program that can be loaded by a processor and execute any of the above-mentioned diaphragm accumulator air tightness detection methods.

[0023] By adopting the above technical solution, a computer program of a diaphragm accumulator air tightness detection method is stored in a computer-readable storage medium, so that a processor loads and executes the computer program in the storage medium, and a hydraulic system fills the liquid end of the diaphragm accumulator with liquid to stimulate the pressure change of the gas end, thereby reflecting the gas end pressure according to the liquid end pressure. When the two are different, it can be determined that there is a leakage at the gas end, and the leakage will not be ignored due to a small leakage, thereby improving the accuracy of the diaphragm accumulator air tightness detection.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The diaphragm accumulator is charged with liquid by controlling the hydraulic system to test the pressure detection information of the diaphragm accumulator. When the pressure at the liquid end of the diaphragm accumulator changes, the pressure at the gas end changes accordingly based on the comparison between the pressure detection information and the liquid pressure information. Even in the case of very small leakage, the pressure change can be detected in real time, thereby improving the accuracy of the air tightness detection of the diaphragm accumulator. 2. 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 the filling. After the filling is determined to be completed, the hydraulic system is controlled to detect the basic pressure detection information without causing useless pressure changes in the filling process in the detected pressure, thereby correlating the basic pressure detection information under different filling pressures to obtain pressure detection information, thereby improving the accuracy of the pressure detection information; 3. When it is determined that the test law information does not meet the requirements of the step law information, it means that the test pressure changes disorderly. When testing with disordered 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 into the liquid end of the diaphragm accumulator. After a liquid pressure test is completed, the liquid pressure is increased or decreased to the next liquid pressure for testing based on the liquid pressure, thereby improving the convenience of filling the hydraulic system with liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a flow chart of a method for detecting air tightness of a diaphragm accumulator in an embodiment of the present application.

[0026] Figure 2 It is a flowchart of the steps of controlling a preset hydraulic system according to test plan information to perform a liquid filling test on a diaphragm accumulator to determine pressure detection information in an embodiment of the present application.

[0027] Figure 3 The process of controlling the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information in the embodiment of the present application is Figure 1 .

[0028] Figure 4 It is a flow chart of the steps of controlling the hydraulic system to charge liquid into the liquid end of the diaphragm accumulator according to a preset step test method in an embodiment of the present application.

[0029] Figure 5 The process of controlling the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information in the embodiment of the present application is Figure 2 .

[0030] Figure 6 It is a flow chart of the verification steps of pressure detection information in an embodiment of the present application.

[0031] Figure 7 It is a flowchart of the steps of obtaining pressure change trend information of pressure detection information in an embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-Figure 7 It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] The embodiment of the present application discloses a method for detecting the air tightness of a diaphragm accumulator, and specifically discloses a processing terminal and a hydraulic system. The processing terminal and the hydraulic system are connected through a data wire to realize data interaction and control. After the processing terminal receives the preparation completion trigger information of the diaphragm accumulator, the processing terminal obtains and calls the test plan information, thereby controlling the hydraulic system to perform a liquid filling test on the diaphragm accumulator according to the test plan information, and detects the pressure detection information. The processing terminal determines the liquid pressure information according to the pressure detection information and the test plan information. When it is determined that the two are different, it indicates that when filling with liquid at the test pressure, the air end leaks, resulting in the detection pressure failing to reach the test pressure, thereby prompting according to the unqualified prompt information, thereby improving the accuracy of the diaphragm accumulator air tightness detection.

[0034] Reference Figure 1 The present application discloses a method for detecting air tightness of a diaphragm accumulator, comprising the following steps: Step S100: Acquire preparation completion trigger information of the diaphragm accumulator.

[0035] The preparation completion trigger information refers to the trigger data for the diaphragm accumulator to start the air tightness test, which is input by the operator on the processing terminal when the operator fills the gas into the gas end of the diaphragm accumulator according to the preset gas pressure and seals it, and then connects the liquid end of the diaphragm accumulator to the hydraulic system.

[0036] Step S101: acquiring test plan information of the diaphragm accumulator based on the preparation completion trigger information.

[0037] The test plan information refers to the air pressure change plan for the diaphragm accumulator, including the test number and the test pressure. The test number is 1, 2, 3, etc. The test pressure is determined by the operator according to the actual specifications of the diaphragm accumulator. The operator forms a data table after matching the test number with the test pressure one by one, and inputs and stores the data table in the processing terminal. After the processing terminal receives the ready completion trigger information, the processing terminal responds to the ready completion trigger information to call the test plan information.

[0038] Step S102: Control a preset hydraulic system to perform a filling test on the diaphragm accumulator according to the test plan information to determine pressure detection information.

[0039] Among them, after the processing terminal calls the test plan information, the processing terminal controls the hydraulic system according to the test number and test pressure corresponding to the test plan information to fill the liquid into the liquid end of the diaphragm accumulator with the test pressure, thereby changing the air pressure at the air end and obtaining pressure detection information to assist in the air tightness detection.

[0040] A hydraulic system refers to a device that is connected to the liquid end of a diaphragm accumulator to control the liquid to enter the liquid end of the diaphragm accumulator at a corresponding pressure to compress the diaphragm to assist in air tightness testing, including a motor-driven hydraulic pump, a directional control valve, a pressure control valve, a flow control valve, a pipeline, a fuel tank, a sensor for monitoring pressure, etc. The hydraulic system in this application is only used to assist in air tightness testing, and is not used to convert hydraulic energy into mechanical energy. Pressure detection information refers to the pressure at the gas end after the hydraulic system fills the liquid at the test pressure into the liquid end of the diaphragm accumulator and stabilizes. After the liquid end stabilizes, the pressure at the liquid end is equal to the pressure at the gas end, so that the hydraulic system detects the pressure at the liquid end and indirectly obtains the gas end pressure. For specific methods, refer to Figure 2 steps.

[0041] Step S103: Analyze the pressure detection information and the test plan information to determine the liquid pressure information of the hydraulic system.

[0042] Among them, the liquid pressure information refers to the correct pressure of the liquid currently charged into the diaphragm accumulator of the hydraulic system, which is obtained by the processing terminal calling the test pressure with the same serial number in the test plan information according to the serial number of the pressure corresponding to the pressure detection information. For example, if the serial number of the pressure corresponding to the pressure detection information is 1, then the test pressure No. 1 in the test plan information is called.

[0043] Step S104: Determine whether the pressure detection information meets the requirements of liquid pressure information.

[0044] The requirement of 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 end pressure, and further determining whether there is a gas leak at the gas end.

[0045] Step S1041: If not, a prompt is given according to the preset unqualified prompt information.

[0046] Among them, 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 means that the hydraulic system is filled with liquid with the correct hydraulic pressure, but due to gas leakage at the gas end, the hydraulic pressure presses the gas out. When the liquid and gas are balanced, the hydraulic pressure is lower than the correct hydraulic pressure, so a prompt is given according to the unqualified prompt information.

[0047] The unqualified prompt information refers to the prompt information that the air tightness of the diaphragm accumulator is unqualified, which can be displayed on the processing terminal in the form of text and voice.

[0048] Step S1042: If it meets the requirements, a prompt is given according to the preset qualified prompt information.

[0049] Among them, 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 means that the air pressure is equal to the correct hydraulic pressure, and there is no gas leakage at the air end, so a prompt is given according to the qualified prompt information.

[0050] The qualified prompt information refers to the prompt information that the air tightness of the diaphragm accumulator is qualified, which can be displayed on the processing terminal in the form of text and voice.

[0051] Reference Figure 2 The steps of 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: 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.

[0052] 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 after the processing terminal identifies the test plan information.

[0053] Step S201: Control the hydraulic system to charge liquid into the liquid end of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information.

[0054] Among them, after the processing terminal determines the test serial number information and the corresponding test pressure information, the processing terminal controls the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the test serial number information and the test pressure information. The specific control method is referred to Figure 3 steps, thereby providing basic support for subsequent detection of air pressure changes.

[0055] Step S202: Acquire the actual test pressure information and filling time information of the hydraulic system.

[0056] The actual test pressure information refers to the pressure value of the hydraulic system currently charging the diaphragm accumulator with liquid, which is obtained by the processing terminal calling the test pressure when controlling the hydraulic system to charge the liquid according to the test pressure. The filling time information refers to the time when the hydraulic system charges the diaphragm accumulator with liquid, which is obtained by the timer.

[0057] Step S203: Analyze the actual test pressure information and the preset pressure-time relationship information to determine the reference filling time information.

[0058] Among them, the pressure-time relationship information refers to a database that stores the corresponding relationship between the test pressure and the filling time. The test pressure is proportional to the filling time, that is, the greater the test pressure, the longer the filling time. The operator will store the two in the database after one-to-one correspondence.

[0059] The reference filling time information refers to the standard time when filling with the current test pressure, which is obtained by the processing terminal inputting the pressure value corresponding to the actual test pressure information into the database corresponding to the pressure-time relationship information and matching the output.

[0060] Step S204: Determine whether the filling time information meets the requirements of the reference filling time information.

[0061] The requirement of the reference filling time information is that the time value corresponding to the reference filling time information is 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 changes the pressure at the liquid end of the diaphragm accumulator to the test pressure, providing data support for the subsequent acquisition of pressure detection information.

[0062] Step S2041: If not, continue to obtain the filling time information for cyclic judgment.

[0063] Among them, if the processing terminal determines that the time value corresponding to the filling time information is inconsistent with the time value corresponding to the benchmark filling time information, the surface hydraulic system has not completed the filling, so the filling time information continues to be detected, thereby continuing to pay attention to the filling condition of the hydraulic system.

[0064] Step S2042: If it meets the requirements, the hydraulic system is controlled to obtain the basic pressure detection information, and the hydraulic system is continuously controlled to charge the liquid into the liquid end of the diaphragm accumulator for cyclic testing according to the test sequence number information and the corresponding test pressure information.

[0065] Among them, if the processing terminal determines that the time value corresponding to the filling time information is consistent with the time value corresponding to the reference filling time information, it indicates that the filling system has completed the filling. Therefore, the 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, and after the detection time, continues to control the hydraulic system according to the test sequence number information and the corresponding test pressure information to fill the liquid into the liquid end of the diaphragm accumulator, so as to continue the test with the remaining test pressure.

[0066] Basic pressure detection information refers to the change in liquid end pressure within a certain period of time after the hydraulic system fills the liquid into the liquid end of the diaphragm accumulator at the test pressure. The pressure value is detected by the pressure sensor in the hydraulic system and associated with the test number.

[0067] Step S20421: Associate basic pressure detection information to generate pressure detection information.

[0068] The pressure detection information in this step is consistent with the pressure detection information in step S102. After the hydraulic system completes the test according to the test plan information, all detected basic pressure detection information is stored in a data packet to obtain pressure detection information.

[0069] Reference Figure 3 The steps of controlling the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information include: Step S300: Analyze the test sequence number information and the corresponding test pressure information to determine the test rule information.

[0070] Among them, the test pattern information refers to the changing pattern of the test pressure with the test number, which includes two patterns. One is the disordered pattern, that is, the test pressure changes disorderly with the increase of the test number, sometimes increasing, sometimes decreasing; the other is the step-by-step pattern, that is, the test pressure increases with the increase of the test number, or decreases with the increase of the test number, which is determined by the processing terminal after analysis based on the test number information and the corresponding test pressure information.

[0071] Step S301: Determine whether the test regularity information meets the requirements of the preset step regularity information.

[0072] The step rule information refers to the rule that the test pressure increases or decreases as the serial number increases, and the requirement for the step rule information refers to the consistency with the rule corresponding to the step rule information, which is stored in the processing terminal by the operator.

[0073] By processing the terminal, it is determined whether the law corresponding to the test law information is consistent with the law corresponding to the step law information, so as to determine whether the hydraulic system can be directly controlled to be filled with fluid in the order of the serial numbers, thereby providing data support for subsequent filling.

[0074] Step S3011: If it meets the requirements, then the corresponding test pressure information is selected in sequence according to the sequence of the test number information to control the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator.

[0075] Among them, if the processing terminal determines that the law corresponding to the test law information is consistent with the law corresponding to the step law information, it indicates that the test pressure increases or decreases with the increase of the serial number. Therefore, after the hydraulic system completes filling with a test pressure, it can continue to fill or discharge with the next test pressure based on the test pressure, thereby selecting the corresponding test pressure information in sequence according to the serial number sequence corresponding to the test serial number information 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.

[0076] Step S3012: If not, the hydraulic system is controlled to charge the liquid into the liquid end of the diaphragm accumulator according to a preset step test method.

[0077] Among them, if the processing terminal determines that the law corresponding to the test law information is inconsistent with the law corresponding to the step law information, it means that the test pressure changes disorderly with the increase of the serial number. If the liquid is filled with disordered test pressure, the hydraulic system will cause frequent replacement of filling or draining, which will cause inconvenience in filling. Therefore, according to the step test method, the hydraulic system is controlled to fill the liquid into the liquid end of the diaphragm accumulator, thereby improving the convenience and standardization of filling.

[0078] The step test method refers to a method of controlling the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator in a step-by-step manner when the test pressure is disordered. Figure 4 The steps are stored in the processing terminal by the operator.

[0079] Reference Figure 4 The steps of controlling the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the preset step test method include: Step S400: Perform step-by-step sorting according to the test pressure information to determine basic test sequence information.

[0080] The basic test sequence information refers to the pressure sequence obtained by sorting the test pressures in a step-by-step manner, which is obtained by sorting the test pressure information from small to large or from large to small by the processing terminal.

[0081] Step S401: calling and associating the corresponding test number information according to the test pressure corresponding to the basic test sequence information to generate the test pressure sequence information.

[0082] Among them, the test pressure sequence information refers to the pressure sequence for filling the hydraulic system. 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 No. 1 A pressure, No. 3 B pressure, No. 2 C pressure, etc.

[0083] Step S402: Select the test pressures one by one according to the test pressure sequence information to control the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator.

[0084] Among them, after the processing terminal determines the test pressure sequence information, the processing terminal selects the test pressures one by one according to the test pressure sequence information, for example, first selects No. 1 A pressure, controls the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the A pressure, and then charges the liquid according to the No. 3 B pressure and other pressure sequences, so that the liquid is continuously charged or discharged based on the next test pressure on the basis of one test pressure, thereby improving the convenience and standardization of the filling.

[0085] Reference Figure 5 The step of controlling the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information also includes: Step S500: Acquire current test pressure information of the hydraulic system.

[0086] The current test pressure information refers to the pressure of the hydraulic system currently filling the liquid end of the diaphragm accumulator with liquid, which is obtained by calling the test pressure before the processing terminal controls the hydraulic system to fill the liquid according to the test pressure.

[0087] Step S501: Control the hydraulic system to charge liquid into the liquid end of the diaphragm accumulator according to the current test pressure information, and obtain the number of times of charging.

[0088] Among them, after the processing terminal determines the current test pressure information, the processing terminal controls the hydraulic system to fill the liquid into the liquid end of the diaphragm accumulator according to the pressure corresponding to the current test pressure information, and detects the number of filling times information to provide data support for the subsequent determination of whether the hydraulic system has completed the test pressure detection. The number of filling times information refers to the number of times the processing system controls the hydraulic system to fill the liquid according to the current test pressure information. When the filling system fills the liquid once and releases the liquid once, it counts once and sends the accumulated number of times to the processing terminal.

[0089] Step S502: Determine whether the filling times information meets the requirements of the preset cycle times information.

[0090] The cycle number information refers to the number of times the filling is circulated in each test pressure. The specific value is determined by the operator according to the actual situation. The requirement for the cycle number information is that the number corresponding to the cycle number information is equal and is stored in the processing terminal by the operator.

[0091] The processing terminal determines whether the number of times corresponding to the filling times information is equal to the number of times corresponding to the cycle times information, thereby determining whether the hydraulic system has completed the filling of the test pressure.

[0092] Step S5021: If it meets the requirements, continue to obtain the next current test pressure information to circulate the filling liquid.

[0093] Among them, if the processing terminal determines that the number corresponding to the filling number information is equal to the number corresponding to the cycle number information, it means that the hydraulic system completes the cyclic filling of the diaphragm accumulator with the test pressure, so it continues to obtain the next current test pressure information, thereby continuing to fill the diaphragm accumulator.

[0094] Step S5022: If not, continue to control the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator, and continue to obtain the number of times of charging for cyclic judgment.

[0095] Among them, if the processing terminal determines that the number corresponding to the filling number information is not equal to the number corresponding to the cycle number information, it means that the hydraulic system has only completed part of the filling of the diaphragm accumulator with the test pressure. Therefore, the control pressure system continues to fill the liquid into the liquid end of the diaphragm accumulator with the test pressure, and continues to detect the filling number information, so as to continue to pay attention to the changes in the filling number.

[0096] Reference Figure 6 When the pressure detection information does not meet the requirements of the liquid pressure information, it also includes a verification step of the pressure detection information, and the specific steps include: Step S600: Obtain pressure change trend information of pressure detection information.

[0097] The pressure change trend information refers to the change trend of the absolute value of the difference between the pressure detection information and the liquid pressure. For specific acquisition methods, refer to Figure 7 steps.

[0098] Step S601: Determine whether the pressure change trend information meets the requirements of the preset upward trend information.

[0099] Among them, the rising trend information refers to the trend that the absolute value of the difference between the detection pressure and the test pressure becomes larger and larger with the change of the test pressure. The requirement of the rising trend information refers to the trend consistent with the corresponding trend information, which is stored in the processing terminal by the operator.

[0100] By processing the terminal, it is determined whether the trend corresponding to the pressure change trend information is consistent with the trend corresponding to the rising trend information, so as to determine whether there is a gas leakage at the gas end of the diaphragm accumulator, causing the gas to decrease with the pressure test, resulting in an increasing pressure difference.

[0101] Step S6011: If it meets the requirements, the pressure detection information is retained.

[0102] Among them, if the processing terminal determines that the trend corresponding to the pressure change trend information is consistent with the trend corresponding to the rising trend information, it indicates that there is a gas leakage at the gas end of the diaphragm accumulator, which causes the gas to become less and less with the pressure test, resulting in an increasing 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.

[0103] Step S6012: If not, the pressure detection information is discarded and a single test pressure curve information is obtained.

[0104] Among them, if the processing terminal determines that the trend corresponding to the pressure change trend information is inconsistent with the trend corresponding to the rising trend information, it indicates that there is no gas leakage at the gas end of the diaphragm accumulator. It may be that liquid leakage or damage to the hydraulic system causes the detected pressure detection information to be not equal to the liquid pressure. Therefore, the pressure detection information is discarded, and the single test pressure curve information is tested to provide data support for the subsequent determination of the cause of the pressure detection information not being equal to the liquid pressure.

[0105] The single test pressure curve information refers to the curve of the test pressure changing with time when the hydraulic system starts to be filled with fluid at the test pressure, which is obtained by collecting the test pressure by the hydraulic system and correlating it with time.

[0106] Step S602: Determine whether the single test pressure curve information meets the requirements of the preset liquid leakage pressure curve information.

[0107] Among them, the liquid leakage pressure curve information refers to the curve of the detection pressure changing with time when there is liquid leakage. Usually, it rises to the liquid pressure first, and after the hydraulic system is locked, the detection pressure gradually decreases. The requirement for the liquid leakage pressure curve information refers to the change trend being consistent with the curve corresponding to the liquid leakage pressure curve information.

[0108] The processing terminal determines whether the change trend of the curve corresponding to the single test pressure curve information is consistent with the change trend of the curve corresponding to the liquid leakage pressure curve information, thereby determining whether the pressure detection information is not equal to the liquid pressure due to liquid leakage.

[0109] Step S6021: If it meets the requirements, a prompt is given according to the preset liquid leakage prompt information.

[0110] Among them, if the processing terminal determines that the change trend of the curve corresponding to the single test pressure curve information is consistent with the change trend of the curve corresponding to the liquid leakage pressure curve information, it indicates that the pressure detection information is not equal to the liquid pressure due to liquid leakage, and therefore a prompt is given according to the liquid leakage prompt information.

[0111] Liquid leakage prompt information refers to information used to prompt the existence of liquid leakage, which can be output in the processing terminal in the form of text and voice.

[0112] Step S6022: If not, a prompt is given according to the preset device damage prompt information.

[0113] Among them, if the processing terminal determines that the changing trend of the curve corresponding to the single test pressure curve information is inconsistent with the changing trend of the curve corresponding to the liquid leakage pressure curve information, it indicates that the pressure detection information is not equal to the liquid pressure due to insufficient fluid filling in the hydraulic system or inaccurate pressure sensor detection. Therefore, a prompt is given according to the device damage prompt information.

[0114] The device damage prompt information refers to information used to prompt that the device is damaged, and can be output in the processing terminal in the form of text and voice.

[0115] Reference Figure 7 , the steps of obtaining pressure change trend information of pressure detection information include: Step S700: Analyze the pressure detection information to determine comparative pressure information.

[0116] The comparison pressure information refers to the detection pressure corresponding to any serial number in the pressure detection information, which is obtained by calling the processing terminal from the pressure data corresponding to the pressure detection information.

[0117] Step S701: Analyze the comparative pressure information and the test plan information to determine the liquid comparative pressure information.

[0118] The liquid contrast pressure information refers to the liquid pressure for generating the contrast pressure information, which is obtained by the processing terminal searching for the liquid pressure corresponding to the same serial number in the test plan information according to the serial number corresponding to the contrast pressure information.

[0119] Step S702: Calculate the difference between the contrast pressure information and the liquid contrast pressure information, and define the calculated difference as pressure change information.

[0120] The difference between the pressure change information comparison pressure information and the liquid comparison pressure information is obtained by calculating the absolute value of the difference between the two by the processing terminal.

[0121] Step S703: Analyze and determine pressure change trend information based on the comparison of pressure information and pressure change information.

[0122] The pressure change trend information in this step is consistent with the pressure change trend information in step S600, and is obtained by drawing and identifying by the processing terminal with the comparison pressure information as the horizontal axis and the pressure difference corresponding to the pressure change information as the vertical axis.

[0123] Based on the same inventive concept, an embodiment of the present invention provides a diaphragm accumulator air tightness detection system, comprising: An acquisition module is used to obtain preparation completion trigger information, test plan information, actual test pressure information, filling time information, basic pressure detection information, current test pressure information, filling times information, pressure change trend information and single test pressure curve information; A memory for storing a program of a method for detecting air tightness of a diaphragm accumulator; The program in the memory can be loaded and executed by the processor to implement a method for detecting the air tightness of a diaphragm accumulator.

[0124] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is 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 refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0125] An embodiment of the present invention provides a computer-readable storage medium storing a computer program that can be loaded and executed by a processor and is a method for detecting air tightness of a diaphragm accumulator.

[0126] Computer storage media include, for example, various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0127] Based on the same inventive concept, an embodiment of the present invention provides an intelligent terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed by a method for detecting air tightness of a diaphragm accumulator.

[0128] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is 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 refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0129] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any feature disclosed in this specification (including the abstract and drawings), unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

Claims

1. A method for detecting air tightness of a diaphragm accumulator, characterized in that: include: Obtaining the 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 filling test on a diaphragm accumulator according to the test plan information to determine pressure detection information; Analyze the pressure detection information and the test plan information to determine the fluid pressure information of the hydraulic system; Determine whether the pressure detection information meets the requirements of liquid pressure information; If it does not meet the requirements, a prompt will be given according to the preset unqualified prompt information; If it meets the requirements, a prompt will be given according to the preset qualified prompt information.

2. A method for detecting air tightness of a diaphragm accumulator according to claim 1, characterized in that: The steps of controlling a preset hydraulic system to perform a filling test on a diaphragm accumulator according to the test plan information to determine pressure detection information include: Analyze the test plan information to determine the test pressure information and the test sequence number information corresponding to the test pressure information; Control the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information; Obtain the actual test pressure information and filling time information of the hydraulic system; Analyze the actual test pressure information and the preset pressure-time relationship information to determine the reference filling time information; Determine whether the filling time information meets the requirements of the reference filling time information; If it does not meet the requirement, the filling time information is continuously obtained for cyclic judgment; If it meets the requirements, the hydraulic system is controlled to obtain the basic pressure detection information, and the hydraulic system is continued to be controlled to charge the liquid into the liquid end of the diaphragm accumulator for cyclic testing according to the test sequence number information and the corresponding test pressure information; The basic pressure detection information is associated to generate pressure detection information.

3. A method for detecting air tightness of a diaphragm accumulator according to claim 2, characterized in that: The steps of controlling the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information include: Analyze the test sequence number information and the corresponding test pressure information to determine the test rule information; Determine whether the test regularity information meets the requirements of the preset step regularity information; If it is in compliance, then the corresponding test pressure information is selected in sequence according to the sequence of the test number information to control the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator; If it does not meet the requirements, the hydraulic system is controlled to charge the liquid into the liquid end of the diaphragm accumulator according to the preset step test method.

4. A method for detecting air tightness of a diaphragm accumulator according to claim 3, characterized in that: The steps of controlling the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the preset step test method include: Perform step-by-step sorting based on the test pressure information to determine basic test sequence information; Calling and associating the corresponding test sequence number information according to the test pressure corresponding to the basic test sequence information to generate the test pressure sequence information; The test pressures are selected one by one according to the test pressure sequence information to control the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator.

5. A method for detecting air tightness of a diaphragm accumulator according to claim 3, characterized in that: The step of controlling the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the test sequence number information and the corresponding test pressure information also includes: Get the current test pressure information of the hydraulic system; Control the hydraulic system to charge the liquid into the liquid end of the diaphragm accumulator according to the current test pressure information, and obtain the charging times information; Determine whether the filling times information meets the requirements of the preset cycle times information; If it meets the requirements, continue to obtain the next current test pressure information to circulate the filling; If it does not meet the requirements, the hydraulic system continues to be controlled to charge the liquid into the liquid end of the diaphragm accumulator, and the number of charging times is continuously obtained for cyclic judgment.

6. A method for detecting air tightness 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 of the pressure detection information is also included, and the specific steps include: Obtain pressure change trend information of pressure detection information; Determine whether the pressure change trend information meets the requirements of the preset upward trend information; If it meets the requirements, the pressure detection information is retained; If it does not meet the requirements, the pressure detection information is discarded and the single test pressure curve information is obtained; Determine whether the single test pressure curve information meets the requirements of the preset liquid leakage pressure curve information; If it meets the requirements, a prompt will be given according to the preset liquid leakage prompt information; If it does not meet the requirements, a prompt will be given according to the preset device damage prompt information.

7. A method for detecting air tightness of a diaphragm accumulator according to claim 6, characterized in that: The steps of obtaining pressure change trend information of pressure detection information include: Analyzing the pressure detection information to determine comparative pressure information; analyzing the contrast pressure information and the test plan information to determine the fluid contrast pressure information; Calculating a difference between the contrast pressure information and the liquid contrast pressure information, and defining the calculated difference as pressure change information; The pressure change trend information is determined by analyzing the comparative pressure information and the pressure change information.

8. A diaphragm accumulator air tightness detection system, characterized in that: include An acquisition module is used to obtain the preparation completion trigger information and test plan information; A memory for storing a program of a diaphragm accumulator air tightness detection method according to any one of claims 1 to 7; The program in the memory can be loaded and executed by the processor to implement a diaphragm accumulator air tightness detection method as described in any one of claims 1 to 7.

9. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and executes a method for detecting air tightness of a diaphragm accumulator according to any one of claims 1 to 7.

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