An accumulator air pressure detection method, system, storage medium and intelligent terminal

Abstract

The application relates to an energy accumulator air pressure detection method and system, a storage medium and an intelligent terminal, relates to the field of energy accumulator function detection technology, and comprises the following steps: receiving a detection instruction; when the detection instruction is received, a first electromagnetic valve in a hydraulic system is controlled to be closed to control the disconnection between a high-pressure oil source and a hydraulic energy accumulator, a second electromagnetic valve in the hydraulic system is controlled to be opened to control the energy accumulator in the hydraulic system to discharge oil; the inflation pressure is obtained; when the inflation pressure no longer changes, the inflation pressure and a set value are compared to obtain a comparison result; based on the comparison result, a corresponding adjustment scheme is found from an operation database and the adjustment scheme is executed, the application has the advantages that the opening and closing of corresponding pipelines are controlled through electromagnetic valves, automatic detection is realized, the reading can be obtained through online reading, automatic adjustment is realized, human cost is saved, and the detection efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of accumulator function testing technology, and in particular to an accumulator pressure testing method, system, storage medium and intelligent terminal. Background Technology

[0002] Hydraulic accumulators are common components in hydraulic systems. Due to changes in ambient temperature and quality issues with the accumulators themselves, hydraulic systems require frequent checks of the accumulator's charging pressure.

[0003] In related technologies, the method for detecting the charging pressure of a hydraulic accumulator is as follows: the inlet valve is manually closed, the outlet valve is opened, and after the oil in the hydraulic accumulator is drained, the charging pressure in the hydraulic accumulator is determined by manually observing the reading of the charging pressure test gauge. If the charging pressure of the hydraulic accumulator is lower than the set value, air is added; if it is higher than the set value, air is released until the charging pressure of the hydraulic accumulator meets the set value range specified by the hydraulic system.

[0004] The existing technology has the following problems: since each reading of the test gauge needs to be observed manually, it will be inconvenient for staff to operate if the installation location is too small or the environment is too harsh. There is still room for improvement. Summary of the Invention

[0005] To address the problem of inconvenience for operators when the installation location is too small or the environment is harsh, this application provides a method, system, storage medium, and intelligent terminal for detecting the air pressure of an energy storage device.

[0006] In a first aspect, this application provides a method for detecting the air pressure of an accumulator, employing the following technical solution:

[0007] A method for detecting the air pressure of an accumulator, comprising:

[0008] Receive detection command;

[0009] Upon receiving a detection command, the system controls the first solenoid valve in the preset hydraulic system to close, thereby disconnecting the high-pressure oil source from the hydraulic accumulator. It also controls the second solenoid valve in the preset hydraulic system to open, thereby releasing oil from the accumulator. The hydraulic system includes an accumulator, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve. The accumulator has an inlet pipe connected to an external high-pressure oil source. The first solenoid valve is located on the inlet pipe to control the connection between the high-pressure oil source and the hydraulic accumulator. The accumulator also has an outlet pipe connected to an external oil tank. The second solenoid valve is located on the outlet pipe to control the connection between the accumulator and the oil tank. The accumulator is equipped with a pressure detector to detect the charging pressure. It also has an inlet pipe for replenishing gas and a vent pipe for releasing gas. The third solenoid valve is located on the inlet pipe to control the connection between the accumulator and external gas. The fourth solenoid valve is located on the vent pipe to control the connection between the accumulator and external gas.

[0010] Obtain the inflation pressure;

[0011] When the inflation pressure no longer changes, the inflation pressure is compared with the preset set value, and the comparison result is obtained;

[0012] Based on the comparison results, the corresponding adjustment plan is retrieved from the preset operation database and the adjustment plan is executed.

[0013] By adopting the above technical solution, the opening and closing of the corresponding pipelines is controlled by solenoid valves, thereby realizing automated detection. The readings can also be obtained online and adjusted automatically, eliminating the need for manual operation and observation at the corresponding locations, saving labor costs and improving detection efficiency.

[0014] Optionally, a method for verifying inflation pressure may also be included, the method comprising:

[0015] Obtain the liquid level in the tank after receiving the detection command, and define the liquid level at the moment the detection command is received as the initial liquid level;

[0016] The final liquid height is defined when the inflation pressure no longer changes.

[0017] The amount of oil to be released is determined based on the initial liquid level, the final liquid level, and the preset tank size.

[0018] The inflation pressure is output when the amount of oil discharged is the same as the preset standard amount of oil.

[0019] An alarm signal is output when the amount of oil discharged is less than the standard amount of oil.

[0020] By adopting the above technical solution, the amount of oil is determined to determine whether the oil has been completely drained, thereby ensuring that the space is maximized during inflation pressure testing and improving the accuracy of inflation pressure testing.

[0021] Optionally, methods for outputting an alarm signal when the discharged fuel quantity is less than the standard fuel quantity include:

[0022] The fourth solenoid valve is closed to control the vent pipe to close, and the third solenoid valve is opened to control the intake pipe to open, while the amount of oil discharged continues to be determined.

[0023] As the amount of oil discharged increases, the third solenoid valve continues to open to control the opening of the intake manifold;

[0024] The intake air volume is obtained while the amount of oil discharged remains constant;

[0025] An alarm signal will be output if the amount of oil discharged is still less than the standard amount of oil.

[0026] When the amount of oil discharged equals the standard amount of oil, the third solenoid valve is closed to control the intake pipe to close, and the fourth solenoid valve is opened to control the vent pipe to open and obtain the amount of venting.

[0027] When the venting volume equals the intake volume, the fourth solenoid valve is closed to control the venting pipe to close.

[0028] By adopting the above technical solution, by continuing to increase the inflation pressure, a sufficiently large thrust is generated to expel all the oil, reducing the situation where the oil cannot be expelled due to low internal inflation pressure, which affects the measurement value of internal inflation pressure, and further improving the accuracy of inflation pressure detection.

[0029] Optionally, methods for obtaining the intake air volume while maintaining a constant oil discharge volume include:

[0030] Obtain the initial inflation pressure when the amount of oil discharged remains constant;

[0031] Continue to test the preset intake volume and obtain the first change in inflation pressure;

[0032] Then continue with the intake test to measure the intake volume and obtain the second change in inflation pressure;

[0033] The feedback result is determined based on the first and second variable inflation pressures.

[0034] When the feedback result is the preset leak result, a leak alarm signal is output;

[0035] The intake volume is obtained when the feedback result is the preset normal result.

[0036] By adopting the above technical solution, the change law of inflation pressure is obtained under the condition that the amount of oil released remains constant, that is, the volume occupied by the internal gas remains constant. If there is leakage during the change process, leakage information is output.

[0037] Optionally, it also includes a method for continuing to use the solution after the adjustment is implemented, the method including:

[0038] Control the first solenoid valve to open, control the second solenoid valve to close, and obtain the oil inlet quantity and oil inlet pressure;

[0039] When the inlet pressure equals the preset critical maximum pressure, the inlet quantity at this time is defined as the current inlet quantity.

[0040] When the current oil inlet volume and the preset filling oil volume are the same, close the first solenoid valve and then wait for subsequent operations;

[0041] When the current oil inlet is less than the filling oil, the second solenoid valve is opened and the preset return valve is opened. The hydraulic system also includes a return valve. The accumulator is equipped with a return pipe. One end of the return pipe is connected to the oil tank, and the other end of the return pipe is connected to the high-pressure oil source.

[0042] Obtain the oil output;

[0043] The oil quantity difference is determined based on the oil inflow and outflow rates;

[0044] When the oil quantity difference is less than the filling oil quantity, the first solenoid valve, the second solenoid valve, and the return valve shall remain open.

[0045] When the oil quantity difference equals the filling oil quantity, both the first and second solenoid valves are closed, and the return valve is also closed.

[0046] By adopting the above technical solution, since the amount of oil injected each time is fixed, when a difference in oil quantity is found, indicating that more oil is not needed, it means that there is air inside. At this time, the air is expelled by circulating the oil, thereby improving the purity of the hydraulic oil.

[0047] Optionally, the method of opening the second solenoid valve and the return valve when the current oil inlet quantity is less than the filling oil quantity includes:

[0048] While opening the second solenoid valve and the return valve, close the first solenoid valve and the fourth solenoid valve, and open the third solenoid valve, and obtain the first boosted oil output and the first boosted air intake.

[0049] When the first boosted oil output equals the preset minimum space oil output, the second solenoid valve is closed and the third variable inflation pressure is obtained;

[0050] When the third change inflation pressure equals the critical maximum pressure, the first solenoid valve is opened, the first boosted air intake volume at this time is defined as the current first boosted air intake volume, and the third solenoid valve is closed.

[0051] When the oil quantity difference equals the filling oil quantity, control both the first and second solenoid valves to close, and after controlling the return valve to close, open the fourth solenoid valve and obtain the pressure relief and venting volume.

[0052] The fourth solenoid valve is closed when the pressure relief and air release volume equals the current first boost air intake volume.

[0053] By adopting the above technical solution, the gas volume is increased to the maximum by increasing the inflation pressure, thereby reducing the volume of oil inside the accumulator and thus reducing the amount of circulating oil required, saving oil costs.

[0054] Optionally, another operating method is also included when the current oil inlet volume is less than the preset filling oil volume, the method comprising:

[0055] Determine the amount of vacant oil based on the current oil intake and fill volume;

[0056] While opening the second solenoid valve and the return valve, close the first solenoid valve and the fourth solenoid valve, and open the third solenoid valve to obtain the second boosted air intake and the second boosted oil output.

[0057] When the second boosted oil output equals the preset separation height oil output, the second solenoid valve is closed and the fourth variable inflation pressure is obtained;

[0058] When the fourth change in charging pressure equals the critical maximum pressure, the preset gas release valve and the first solenoid valve are opened, the third solenoid valve is closed, and the additional charging oil volume is obtained. The second boosted air volume at this time is defined as the current second boosted air volume. The accumulator is equipped with a gas release valve located at the gas-oil separation height.

[0059] When the amount of additional oil added equals the amount of empty oil, the gas vent valve is closed and the fourth solenoid valve is opened to release the gas at the current second boost intake volume. Then, the first solenoid valve is opened to make the current oil intake volume equal to the filling oil volume.

[0060] By adopting the above technical solution, when the gas inside the oil cannot be discharged, a gas dispersion valve is installed above the accumulator. When the upper liquid level of the oil is moved to that position, the air is discharged, thus improving the efficiency of air discharge.

[0061] Secondly, this application provides an accumulator air pressure detection system, which adopts the following technical solution:

[0062] An accumulator air pressure detection system, comprising:

[0063] The acquisition module is used to acquire detection commands, inflation pressure, liquid level, air intake, deflation, oil intake, oil intake pressure, and oil output.

[0064] A memory for storing the program of the control method for any of the above-mentioned accumulator pressure detection methods;

[0065] The processor and the program in the memory can be loaded and executed by the processor to implement the control method of any of the above-mentioned accumulator pressure detection methods.

[0066] By adopting the above technical solution, the opening and closing of the corresponding pipelines is controlled by solenoid valves, thereby realizing automated detection. The readings can be obtained online and adjusted automatically, eliminating the need for manual operation and observation at the corresponding locations, saving labor costs and improving detection efficiency.

[0067] Thirdly, this application provides a smart terminal, which adopts the following technical solution:

[0068] The intelligent terminal includes a memory and a processor, the memory storing a computer program that can be loaded by the processor and executed any of the above-mentioned accumulator pressure detection methods.

[0069] By adopting the above technical solution, the opening and closing of the corresponding pipelines is controlled by solenoid valves, thereby realizing automated detection. The readings can be obtained online and adjusted automatically, eliminating the need for manual operation and observation at the corresponding locations, saving labor costs and improving detection efficiency.

[0070] Fourthly, this application provides a computer storage medium capable of storing corresponding programs, featuring fast interaction with large amounts of memory.

[0071] Computer-readable storage media adopt the following technical solutions:

[0072] A computer-readable storage medium storing a computer program that can be loaded by a processor and executed for any of the above-described accumulator pressure detection methods.

[0073] By adopting the above technical solution, the opening and closing of the corresponding pipelines is controlled by solenoid valves, thereby realizing automated detection. The readings can be obtained online and adjusted automatically, eliminating the need for manual operation and observation at the corresponding locations, saving labor costs and improving detection efficiency.

[0074] In summary, this application includes at least the following beneficial technical effects:

[0075] 1. Through automated detection and adjustment, there is no need for people to go to the corresponding places to operate and observe, saving labor costs and improving detection efficiency;

[0076] 2. By determining the amount of oil drained, it is possible to ascertain whether the oil has been completely drained, thereby ensuring that the space is maximized during inflation pressure testing and improving the accuracy of inflation pressure testing;

[0077] 3. When a discrepancy is found in the oil level, indicating that less oil is needed, it means that there is air inside. In this case, the air is expelled by circulating the oil, thus improving the purity of the hydraulic oil. Attached Figure Description

[0078] Figure 1 This is a flowchart of an energy storage device pressure detection method according to an embodiment of this application.

[0079] Figure 2 This is a schematic diagram of the hydraulic system in the embodiments of this application.

[0080] Figure 3 This is a flowchart of the inflation pressure verification method in the embodiments of this application.

[0081] Figure 4 This is a flowchart of a method for outputting an alarm signal when the amount of oil discharged is less than the standard amount of oil, according to an embodiment of this application.

[0082] Figure 5 This is a flowchart of a method for obtaining the intake air volume when the amount of oil discharged remains constant, as described in an embodiment of this application.

[0083] Figure 6 This is a flowchart of the method for continuing to use after implementing the adjustment scheme in the embodiments of this application.

[0084] Figure 7 This is a flowchart of a method in this application embodiment for opening the second solenoid valve and the return valve when the current oil inlet volume is less than the filling oil volume.

[0085] Figure 8 This is a flowchart of another operating method in this application embodiment when the current oil intake is less than the preset filling oil volume.

[0086] Figure 9 This is a system module diagram of an energy storage gas pressure detection method according to an embodiment of this application.

[0087] Explanation of reference numerals in the attached diagram: 1. Accumulator; 11. Oil inlet pipe; 12. Oil outlet pipe; 13. Air inlet pipe; 14. Air vent pipe; 15. Return pipe; 2. First solenoid valve; 3. Second solenoid valve; 4. Third solenoid valve; 5. Fourth solenoid valve; 6. Gas dispersion valve; 7. Return valve; 8. Pressure detector. Detailed Implementation

[0088] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figures 1-9 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.

[0089] This application discloses a method for detecting the air pressure of an accumulator 1. (Refer to...) Figure 1 A method for detecting the air pressure of an accumulator includes:

[0090] Step 100: Receive detection command.

[0091] The detection command is a manually input command that requires checking the inflation pressure. The receiving method is also manually input.

[0092] Step 101: Upon receiving the detection command, control the first solenoid valve 2 in the preset hydraulic system to close to disconnect the high-pressure oil source from the hydraulic accumulator 1, and control the second solenoid valve 3 in the preset hydraulic system to open to release oil from the accumulator 1 in the hydraulic system.

[0093] like Figure 2 As shown, the hydraulic system includes an accumulator 1, a first solenoid valve 2, a second solenoid valve 3, a third solenoid valve 4, and a fourth solenoid valve 5. A piston plate is slidably connected inside the accumulator 1 to divide the interior of the accumulator 1 into a gas region and an oil region.

[0094] Accumulator 1 is equipped with an inlet pipe 11 for connecting to an external high-pressure oil source. A first solenoid valve 2 is installed on the inlet pipe 11 to control the on / off state of the accumulator 1 and the high-pressure oil source, i.e., the on / off state of the inlet pipe 11. Accumulator 1 is equipped with an outlet pipe 12 for connecting to an external oil tank. A second solenoid valve 3 is installed on the outlet pipe 12 to control the on / off state of the accumulator 1 and the oil tank, i.e., the on / off state of the outlet pipe 12. Accumulator 1 is equipped with a pressure detector 8 to detect the charging pressure inside the accumulator 1. Accumulator 1 is also equipped with an air inlet pipe 13 for replenishing internal gas. Accumulator 1 is equipped with a vent pipe 14 for releasing gas. A third solenoid valve 4 is installed on the air inlet pipe 13 to control the on / off state of the gas between the accumulator 1 and the external environment. A fourth solenoid valve 5 is installed on the vent pipe 14 to control the on / off state of the gas between the accumulator 1 and the external environment.

[0095] like Figure 2 As shown, the oil inlet pipe 11 and the oil outlet pipe 12 are both located on the lower side of the accumulator 1, while the air inlet pipe 13 and the air outlet pipe 14 are both located on the upper side of the accumulator 1.

[0096] The accumulator 1 is also equipped with a gas dispersion valve 6, which is used to separate the gas and oil mixed in the oil layer.

[0097] The hydraulic system also includes a return valve 7. A return pipe 15 is installed on the accumulator 1. One end of the return pipe 15 is connected to the oil tank, and the other end of the return pipe 15 is connected to the high-pressure oil source to return the oil in the oil tank to the high-pressure oil source.

[0098] When a detection command is received, it indicates that the oil in the accumulator 1 needs to be drained. Therefore, the second solenoid valve 3 needs to be opened to drain the oil into the oil tank.

[0099] Step 102: Obtain inflation pressure.

[0100] The charging pressure is the pressure of the gas inside accumulator 1.

[0101] Step 103: When the inflation pressure no longer changes, compare the inflation pressure with the preset set value and obtain the comparison result.

[0102] The setpoint is a standard value set manually, which is the theoretically correct charging pressure of accumulator 1 during normal use. The comparison result is obtained by comparing the charging pressure with the setpoint, including whether it is a certain number of atmospheres less or greater.

[0103] Step 104: Based on the comparison results, find the corresponding adjustment plan from the preset operation database and execute the adjustment plan.

[0104] The adjustment scheme refers to the adjustment of the gas inside accumulator 1, including charging and decharging. The database stores the mapping relationship between comparison results and adjustment schemes. Operators skilled in the art perform the operation according to the actual situation to achieve the set charging pressure. When the system receives the corresponding comparison result, it automatically retrieves the corresponding adjustment scheme from the database and outputs it.

[0105] Reference Figure 3 It also includes a method for verifying inflation pressure, which includes:

[0106] Step 200: Obtain the liquid level in the tank after receiving the detection command, and define the liquid level at the moment the detection command is received as the initial liquid level.

[0107] The liquid level refers to the height of the oil in the tank. This can be obtained using a depth measuring instrument.

[0108] Step 201: Define the final liquid height when the inflation pressure no longer changes.

[0109] When the inflation pressure stops changing, it means the oil has been emptied.

[0110] Step 202: Determine the amount of oil to be released based on the initial liquid height, the final liquid height, and the preset tank size.

[0111] The tank dimensions refer to the dimensions of the tank containing the oil, including length, width, and height. The discharged oil volume is the volume of oil discharged after receiving a detection command. It is calculated by subtracting the initial liquid height from the final liquid height and then multiplying the result by the cross-sectional area.

[0112] Step 203: Output inflation pressure when the amount of oil discharged is the same as the preset standard amount of oil.

[0113] The standard oil level is the standard amount of oil in accumulator 1. It is generally the maximum oil level.

[0114] Step 204: Output an alarm signal when the amount of oil discharged is less than the standard amount of oil.

[0115] The alarm signal indicates incomplete fuel discharge or other problems. The output will be displayed as text or by flashing lights. If the discharged fuel level is less than the standard level, it means the fuel has not been completely discharged, which is abnormal and requires inspection and repair by a technician.

[0116] Reference Figure 4 Methods for issuing an alarm signal when the discharged fuel quantity is less than the standard fuel quantity include:

[0117] Step 300: Control the fourth solenoid valve 5 to close to control the vent pipe 14 to close, and open the third solenoid valve 4 to control the intake pipe 13 to open, and continue to determine the amount of oil discharged.

[0118] When the fourth solenoid valve 5 is closed to close the vent pipe 14 and the third solenoid valve 4 is opened to open the inlet pipe 13, gas can be introduced into the accumulator 1.

[0119] Step 301: Continue to open the third solenoid valve 4 as the amount of oil discharged increases to control the opening of the intake pipe 13.

[0120] If the amount of oil discharged increases, it means that the oil inside has not been emptied. In this case, the air pressure can be increased to increase the thrust and expel the oil.

[0121] Step 302: Obtain the intake air volume while keeping the amount of oil discharged constant.

[0122] The intake volume is the volume of gas entering through the intake pipe 13. This can be obtained by installing a flow meter on the intake pipe 13. When the oil discharge volume remains unchanged, it indicates that it is no longer possible to vent the oil by increasing the air pressure, or that the oil has already been vented. Therefore, the air pressure is increased at this point. In order to restore the gas volume in the accumulator 1 to its original size, the amount of gas discharged needs to be determined.

[0123] Step 303: Output an alarm signal when the amount of oil discharged is still less than the standard amount of oil.

[0124] If the amount of oil discharged is still less than the standard amount, it indicates that there is still a problem, so an alarm signal will still be output.

[0125] Step 304: When the amount of oil discharged is equal to the standard amount of oil, control the third solenoid valve 4 to close to control the intake pipe 13 to close, and open the fourth solenoid valve 5 to control the vent pipe 14 to open and obtain the amount of venting.

[0126] The venting volume is the amount of gas released from the venting pipe 14. It can be obtained either by using a flow meter or by placing a vacuum bag at the location of the venting pipe 14 and measuring the gas pressure and volume inside to obtain the corresponding venting volume.

[0127] When the amount of oil released is equal to the standard amount, it means that the amount of oil released was less than the standard amount before because it was not completely purged. Therefore, the gas can be released at this time.

[0128] Step 305: When the venting volume equals the intake volume, control the fourth solenoid valve 5 to close so as to control the venting pipe 14 to close.

[0129] When the venting volume equals the inlet volume, it means that the amount of gas inside the accumulator 1 has reached the original value, so there is no need to vent. Control the fourth solenoid valve 5 to close, thereby controlling the venting pipe 14 to close, and then the inflation pressure can be detected.

[0130] Reference Figure 5 Methods for obtaining intake air volume while maintaining a constant oil discharge volume include:

[0131] Step 400: Obtain the initial inflation pressure when the amount of oil discharged remains constant.

[0132] The initial inflation pressure is the inflation pressure when the amount of oil discharged remains constant.

[0133] Step 401: Continue with the preset test air intake volume and obtain the first change inflation pressure.

[0134] The test intake volume is the volume of gas introduced into the accumulator 1 without causing it to explode, in order to test whether there is any leakage inside the accumulator 1. The first change in charging pressure is the charging pressure after the test intake volume is introduced.

[0135] Step 402: Then continue to test the intake volume and obtain the second change inflation pressure.

[0136] The second change in inflation pressure is the inflation pressure after re-entering the test air intake.

[0137] Step 403: Determine the feedback result based on the first and second variable inflation pressures.

[0138] The feedback result indicates whether there is an air leak. This is determined by establishing a system of two linear equations using the initial inflation pressure, the first variable inflation pressure, and the second variable inflation pressure. One unknown is the gas volume within accumulator 1, and the other is the leakage rate. The equation is: gas volume multiplied by the inflation pressure plus the test intake volume minus the leakage rate multiplied by the standard pressure equals the first variable inflation pressure multiplied by the gas volume; the other equation is: gas volume multiplied by the first variable inflation pressure plus the test intake volume minus the leakage rate multiplied by the standard pressure equals the second variable inflation pressure multiplied by the gas volume. When the leakage rate is zero, the feedback result is normal; when the leakage rate is positive, the feedback result is a leak.

[0139] Step 404: Output a leak alarm signal when the feedback result is the preset leak result.

[0140] The gas leak alarm signal is a warning signal to the user of a gas leak. The output can be in text format.

[0141] Step 405: Obtain the intake volume when the feedback result is the preset normal result.

[0142] If the feedback result is normal, it means there is no air leak, and the air intake volume can be obtained normally.

[0143] Reference Figure 6 It also includes methods for continued use after the adjustment plan has been implemented, including:

[0144] Step 500: Control the first solenoid valve 2 to open, control the second solenoid valve 3 to close, and obtain the oil inlet quantity and oil inlet pressure.

[0145] The oil inlet flow rate is the amount of oil entering the system. This is obtained through a flow meter installed on the oil inlet pipe 11. The oil inlet pressure is the oil pressure. This oil pressure can be obtained from a pressure gauge installed on the upper surface of the oil layer in the accumulator 1. The first solenoid valve 2 is opened, and the second solenoid valve 3 is closed, allowing the accumulator 1 to be filled with oil.

[0146] Step 501: When the oil inlet pressure equals the preset critical maximum pressure, the oil inlet quantity at this time is defined as the current oil inlet quantity.

[0147] The critical maximum pressure is the pressure at which the oil flow can no longer be increased. It is determined manually by measuring the pressure at which no more oil can be supplied. When the inlet pressure equals the critical maximum pressure, it means that oil can no longer be supplied.

[0148] Step 502: When the current oil inlet volume and the preset filling oil volume are the same, close the first solenoid valve 2, and then wait for subsequent operations.

[0149] The fill oil level refers to the oil level when accumulator 1 is fully loaded. It is measured manually. When the current oil inflow is the same as the preset fill oil level, it indicates that there are no impurities inside and the system has returned to normal operating condition.

[0150] Step 503: When the current oil inlet volume is less than the filling oil volume, open the second solenoid valve 3 and open the preset return valve 7.

[0151] When the forward oil flow is less than the full charge oil flow, it indicates that there is air on the oil storage side of accumulator 1. Therefore, the second solenoid valve 3 and the return valve 7 are opened at this time, while the first solenoid valve 2 remains open to circulate the oil, so that the air bubbles formed by the air come out of accumulator 1 along with the oil.

[0152] It should be noted that since the entire system is a circulation pipe, it is generally assumed that there are no impurities. The only possibility is that the current oil intake is less than the filling oil volume due to air.

[0153] Step 504: Obtain the oil output.

[0154] The oil output is the amount of oil released from the oil outlet pipe 12 after the second solenoid valve 3 is opened. This can be obtained using a flow meter.

[0155] Step 505: Determine the oil quantity difference based on the oil inflow and outflow.

[0156] The oil volume difference is the difference between the volume of oil entering and exiting the accumulator 1, and also the amount of oil remaining in the accumulator 1. It is calculated by subtracting the oil exit volume from the oil inflow volume. The oil inflow volume here also includes the volume before the second solenoid valve 3 is opened.

[0157] Step 506: When the oil quantity difference is less than the filling oil quantity, continue to maintain the open state of the first solenoid valve 2, the second solenoid valve 3 and the return valve 7.

[0158] When the oil level difference is less than the filling oil level, it means that the amount of oil remaining in accumulator 1 is less than the filling oil level, which means that accumulator 1 is not fully filled, so it is necessary to continue to remove air bubbles.

[0159] Step 507: When the oil quantity difference equals the filling oil quantity, control both the first solenoid valve 2 and the second solenoid valve 3 to close, and control the return valve 7 to close.

[0160] When the oil quantity difference equals the filling oil quantity, it indicates that the air bubbles have been expelled. Therefore, both the first solenoid valve 2 and the second solenoid valve 3 are closed, and the return valve 7 is also closed.

[0161] Reference Figure 7 The method for opening the second solenoid valve 3 and the return valve 7 when the current oil inlet volume is less than the filling oil volume includes:

[0162] Step 600: While opening the second solenoid valve 3 and the return valve 7, close the first solenoid valve 2 and the fourth solenoid valve 5, and open the third solenoid valve 4, and obtain the first boosted oil output and the first boosted air intake.

[0163] While opening the second solenoid valve 3 and the return valve 7, the first solenoid valve 2 and the fourth solenoid valve 5 are closed, and the third solenoid valve 4 is opened, allowing gas to enter the accumulator 1 and discharging excess oil. The first boosted oil output is the oil output when gas enters the accumulator 1 and excess oil is discharged. The first boosted air intake is the air intake when gas enters the accumulator 1 and excess oil is discharged.

[0164] Step 601: When the first boosted oil output is equal to the preset minimum space oil output, close the second solenoid valve 3 and obtain the third variable inflation pressure.

[0165] The minimum oil output is the amount of oil output when the oil level in accumulator 1 is at its lowest. It is also the oil output when the piston of accumulator 1 moves from its highest to its lowest position. The third change in charging pressure is the charging pressure when the piston of accumulator 1 moves from its highest to its lowest position. When the first boosted oil output equals the preset minimum oil output, it means that the space occupied by the gas has been maximized, and the oil level in accumulator 1 is at its lowest.

[0166] Step 602: When the third variable inflation pressure equals the critical maximum pressure, open the first solenoid valve 2, define the first boosted air intake volume at this time as the current first boosted air intake volume, and close the third solenoid valve 4.

[0167] When the third change in charging pressure equals the critical maximum pressure, it indicates that the oil pressure and air pressure are balanced, and the piston in accumulator 1 will not move. Open the first solenoid valve 2, allowing oil circulation. Close the third solenoid valve 4, ensuring the third change in charging pressure remains constant.

[0168] Step 603: When the oil quantity difference equals the filling oil quantity, control the first solenoid valve 2 and the second solenoid valve 3 to both close, and control the return valve 7 to close, then open the fourth solenoid valve 5 and obtain the pressure relief and venting volume.

[0169] The pressure relief and venting volume is the amount of gas flowing through the vent pipe when releasing internal pressure. The method for obtaining this volume can be the same as for the venting volume, and will not be elaborated upon here.

[0170] When the oil level difference equals the filling oil level, it indicates that the air bubbles in the oil have been expelled. At this point, it is necessary to restore the original state. Therefore, both the first solenoid valve 2 and the second solenoid valve 3 are closed, and the return valve 7 is also closed. Then, to begin venting, the fourth solenoid valve 5 is opened.

[0171] The oil quantity difference here does not include the amount of oil discharged when the gas increases. Therefore, although the internal space of accumulator 1 has changed, the oil quantity difference remains unchanged. So it is still necessary to compare it with the full oil quantity at this time.

[0172] Step 604: Close the fourth solenoid valve 5 when the depressurization and air release volume is equal to the current first boost air intake volume.

[0173] When the pressure relief and gas release volume is equal to the current first boost air intake volume, it means that the extra gas volume has been eliminated, so the fourth solenoid valve 5 can be closed at this time.

[0174] Reference Figure 8 It also includes another operating method when the current oil inlet volume is less than the preset filling oil volume, the method comprising:

[0175] Step 700: Determine the missing oil quantity based on the current oil inlet quantity and the full oil quantity.

[0176] The difference between the vacant fuel level, the replenished fuel level, and the current fuel intake level.

[0177] Step 701: While opening the second solenoid valve 3 and the return valve 7, close the first solenoid valve 2 and the fourth solenoid valve 5, and open the third solenoid valve 4, and obtain the second boosted air intake volume and the second boosted oil output volume.

[0178] The second boosted air intake volume is the amount of gas added after the operation in step 701. The second boosted oil output volume is the amount of oil flowing out after the operation in step 701.

[0179] Open the second solenoid valve 3 and the return valve 7, and close the first solenoid valve 2 to allow oil to begin to drain. Close the fourth solenoid valve 5 and open the third solenoid valve 4 to allow gas to begin to increase. At this time, since the oil layer is still at its highest point, it needs to move downwards, so oil is released and gas is introduced, thus obtaining the second boosted air intake and the second boosted oil output.

[0180] Step 702: When the second boosted oil output is equal to the preset separation height oil output, close the second solenoid valve 3 and obtain the fourth variable inflation pressure.

[0181] The separation height oil output is the amount of oil that needs to flow out at the height where the oil and gas are separated; here, this height is the height of the gas vent valve. When the second pressurized oil output equals the preset separation height oil output, it means that the oil has already dropped to that height, so there is no need to release oil. The fourth change in charging pressure is the charging pressure of accumulator 1 after step 701.

[0182] Step 703: When the fourth change inflation pressure equals the critical maximum pressure, open the preset gas release valve and the first solenoid valve 2, close the third solenoid valve 4 and obtain the additional inflation oil volume, and define the second boost air volume at this time as the current second boost air volume.

[0183] The additional oil filling amount is the amount of oil that can enter after the first solenoid valve 2 is opened.

[0184] When the fourth change inflation pressure equals the critical maximum pressure, it indicates that the two sides inside are in balance. At this point, even if more oil is added inside, it will not move. Therefore, at this time, the gas venting valve and the first solenoid valve 2 are opened to release the air.

[0185] To facilitate the expulsion of air, a mixer can be installed inside to agitate the air and direct it to the gas dispersion valve.

[0186] Step 704: When the additional oil supply equals the empty oil supply, close the gas vent valve and control the fourth solenoid valve 5 to open to release the gas of the current second boost intake volume, and then continue to open the first solenoid valve 2 to make the current oil supply volume equal to the filling oil supply volume.

[0187] When the amount of additional oil added equals the amount of oil missing, it indicates that the internal air has been expelled. At this point, the gas venting valve can be closed, and the fourth solenoid valve 5 can be opened to release the gas from the current second pressurized intake. Based on the same inventive concept, this invention provides an accumulator air pressure detection system.

[0188] Reference Figure 9 An energy storage device pressure detection system, comprising:

[0189] The acquisition module is used to acquire detection commands, inflation pressure, liquid level, air intake, deflation, oil intake, oil intake pressure, and oil output.

[0190] A memory for storing a program for a control method of an accumulator pressure detection method;

[0191] The processor and the program in the memory can be loaded and executed by the processor to implement a control method for an energy storage gas pressure detection method.

[0192] 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.

[0193] This invention provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed as a method for detecting the pressure of an accumulator.

[0194] 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.

[0195] 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 air pressure of an energy storage device.

[0196] 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 detecting the air pressure of an accumulator, characterized in that, include: Receive detection command; Upon receiving a detection command, the system controls the first solenoid valve (2) in the preset hydraulic system to close, thereby disconnecting the high-pressure oil source from the hydraulic accumulator (1), and controls the second solenoid valve (3) in the preset hydraulic system to open, thereby controlling the accumulator (1) in the hydraulic system to release oil. The hydraulic system includes an accumulator (1), a first solenoid valve (2), a second solenoid valve (3), a third solenoid valve (4), and a fourth solenoid valve (5). The accumulator (1) is provided with an oil inlet pipe (11) that connects to the high-pressure oil source in the outside. The first solenoid valve (2) is located on the oil inlet pipe (11) to control the connection between the high-pressure oil source and the hydraulic accumulator (1). The accumulator (1) is provided with an oil outlet pipe (12) that connects to the external oil tank. The second solenoid valve (3) is provided on the oil outlet pipe (12) to control the connection between the accumulator (1) and the oil tank. The accumulator (1) is provided with a pressure detector (8) for detecting the charging pressure. The accumulator (1) is also provided with an air inlet pipe (13) for replenishing gas and an air outlet pipe (14) for releasing gas. The third solenoid valve (4) is provided on the air inlet pipe (13) to control the connection between the accumulator (1) and the external gas. The fourth solenoid valve (5) is provided on the air outlet pipe (14) to control the connection between the accumulator (1) and the external gas. Obtain the inflation pressure; When the inflation pressure no longer changes, the inflation pressure is compared with the preset set value, and the comparison result is obtained; Based on the comparison results, the corresponding adjustment plan is retrieved from the preset operation database and the adjustment plan is executed. It also includes a method for verifying inflation pressure, which includes: Obtain the liquid level in the tank after receiving the detection command, and define the liquid level at the moment the detection command is received as the initial liquid level; The final liquid height is defined when the inflation pressure no longer changes. The amount of oil to be released is determined based on the initial liquid level, the final liquid level, and the preset tank size. The inflation pressure is output when the amount of oil discharged is the same as the preset standard amount of oil. An alarm signal will be output when the amount of oil discharged is less than the standard amount of oil. Methods for issuing an alarm signal when the discharged fuel quantity is less than the standard fuel quantity include: The fourth solenoid valve (5) is closed to control the vent pipe (14) to close, and the third solenoid valve (4) is opened to control the intake pipe (13) to open, and the amount of oil discharged continues to be determined; When the amount of oil discharged increases, the third solenoid valve (4) continues to open to control the opening of the intake pipe (13); The intake air volume is obtained while the amount of oil discharged remains constant; An alarm signal will be output if the amount of oil discharged is still less than the standard amount of oil. When the amount of oil discharged is equal to the standard amount of oil, control the third solenoid valve (4) to close to control the intake pipe (13) to close, and open the fourth solenoid valve (5) to control the vent pipe (14) to open and obtain the amount of venting; When the venting volume equals the intake volume, control the fourth solenoid valve (5) to close so as to control the venting pipe (14) to close; It also includes methods for continuing to use the system after the adjustment plan has been implemented, including: Control the first solenoid valve (2) to open, control the second solenoid valve (3) to close, and obtain the oil inlet quantity and oil inlet pressure; When the inlet pressure equals the preset critical maximum pressure, the inlet quantity at this time is defined as the current inlet quantity. When the current oil inlet volume and the preset filling oil volume are the same, close the first solenoid valve (2) and then wait for subsequent operations; When the current oil inlet is less than the filling oil, the second solenoid valve (3) is opened and the preset return valve (7) is opened. The hydraulic system also includes the return valve (7). The accumulator (1) is provided with a return pipe (15). One end of the return pipe (15) is connected to the oil tank, and the other end of the return pipe (15) is connected to the high-pressure oil source. Obtain the oil output; The oil quantity difference is determined based on the oil inflow and outflow rates; When the oil quantity difference is less than the filling oil quantity, the first solenoid valve (2), the second solenoid valve (3) and the return valve (7) are kept open. When the oil quantity difference equals the filling oil quantity, control the first solenoid valve (2) and the second solenoid valve (3) to both close, and control the return valve (7) to close.

2. The accumulator pressure detection method according to claim 1, characterized in that, Methods for obtaining intake air volume while maintaining a constant oil discharge volume include: Obtain the initial inflation pressure when the amount of oil discharged remains constant; Continue to test the preset intake volume and obtain the first change in inflation pressure; Then continue with the intake test to measure the intake volume and obtain the second change in inflation pressure; The feedback result is determined based on the first and second variable inflation pressures. When the feedback result is the preset leak result, a leak alarm signal is output; The intake volume is obtained when the feedback result is the preset normal result.

3. The accumulator pressure detection method according to claim 1, characterized in that, The method of opening the second solenoid valve (3) and the return valve (7) when the current oil inlet is less than the filling oil volume includes: While opening the second solenoid valve (3) and the return valve (7), close the first solenoid valve (2) and the fourth solenoid valve (5), and open the third solenoid valve (4), and obtain the first boosted oil output and the first boosted air intake. When the first boosted oil output equals the preset minimum space oil output, the second solenoid valve (3) is closed and the third variable inflation pressure is obtained; When the third change inflation pressure equals the critical maximum pressure, the first solenoid valve (2) is opened, the first boosted air intake at this time is defined as the current first boosted air intake, and the third solenoid valve (4) is closed. When the oil quantity difference equals the filling oil quantity, control the first solenoid valve (2) and the second solenoid valve (3) to close, and control the return valve (7) to close, then open the fourth solenoid valve (5) and obtain the pressure relief and venting volume; When the depressurization and venting volume equals the current first boosting intake volume, the fourth solenoid valve (5) is closed.

4. The accumulator pressure detection method according to claim 1, characterized in that, It also includes another operating method when the current oil inlet volume is less than the preset filling oil volume, the method comprising: Determine the amount of vacant oil based on the current oil intake and fill volume; While opening the second solenoid valve (3) and the return valve (7), close the first solenoid valve (2) and the fourth solenoid valve (5), and open the third solenoid valve (4), and obtain the second boosted air intake and the second boosted oil output. When the second boosted oil output is equal to the preset separation height oil output, the second solenoid valve (3) is closed and the fourth variable inflation pressure is obtained; When the fourth change in charging pressure equals the critical maximum pressure, the preset gas release valve and the first solenoid valve (2) are opened, the third solenoid valve (4) is closed, and the additional charging oil volume is obtained. The second boosting air volume at this time is defined as the current second boosting air volume. The accumulator (1) is equipped with a gas release valve located at the gas-oil separation height. When the amount of additional oil added equals the amount of empty oil, the gas vent valve is closed and the fourth solenoid valve (5) is opened to release the gas of the current second boosted intake volume. Then the first solenoid valve (2) is opened to make the current oil intake volume equal to the filling oil volume.

5. An accumulator air pressure detection system, characterized in that, include: The acquisition module is used to acquire detection commands, inflation pressure, liquid level, air intake, deflation, oil intake, oil intake pressure, and oil output. A memory for storing a program of a control method for an accumulator pressure detection method as described in any one of claims 1 to 4; The processor and the program in the memory can be loaded and executed by the processor to implement the control method of the accumulator pressure detection method as described in any one of claims 1 to 4.

6. A smart terminal, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as described in any one of claims 1 to 4 for detecting the pressure of an accumulator.

7. A computer-readable storage medium, characterized in that, The device contains a computer program that can be loaded by a processor and executed as described in any one of claims 1 to 4 for detecting the pressure of an accumulator.

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