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

Abstract

The invention relates to an energy accumulator air pressure detection method and system, a storage medium and an intelligent terminal, and relates to the field of energy accumulator function detection technologies. When a detection instruction is received, a first electromagnetic valve in the hydraulic system is controlled to be closed so as to control a high-pressure oil source and a hydraulic energy accumulator to be disconnected, and a second electromagnetic valve in the hydraulic system is controlled to be opened so as to control the energy accumulator in the hydraulic system to drain oil; the inflation pressure is obtained; when the inflation pressure does not change any more, the inflation pressure is compared with the setting value, and a comparison result is obtained; according to the method, the corresponding pipeline is controlled to be opened and closed through the electromagnetic valve, so that automatic detection is achieved, reading can be achieved through online reading, automatic adjustment is achieved, people do not need to run to the corresponding place for operation and observation, and the operation efficiency is improved. The labor cost is saved, and the high efficiency of detection is improved.

Description

Technical Field

[0001] The present application relates to the field of accumulator function detection technology, and in particular to an accumulator air pressure detection method, system, storage medium and intelligent terminal. Background Art

[0002] Hydraulic accumulators are common devices in hydraulic systems. Due to changes in ambient temperature and quality issues of the accumulators themselves, hydraulic systems need to frequently check the charging pressure of the accumulators.

[0003] In the related art, the method for detecting the inflation pressure of the hydraulic accumulator is: manually close the oil inlet stop valve, open the oil discharge stop valve, and after the oil in the hydraulic accumulator is discharged, the inflation pressure in the hydraulic accumulator is obtained by manually observing the reading of the inflation pressure detection gauge. If the inflation pressure of the hydraulic accumulator is less than the set value, air is added; if it is greater than the set value, air is discharged until the inflation pressure of the hydraulic accumulator meets the set value range specified by the hydraulic system.

[0004] The prior art has the following problems: since each test meter reading requires manual observation, once the installation location is too small or the environment is relatively harsh, it will be inconvenient for the staff to operate, and there is still room for improvement. Summary of the invention

[0005] In order to improve the problem that once the installation location is too narrow or the environment is relatively harsh, it will cause inconvenience for the staff to operate, the present application provides an accumulator air pressure detection method, system, storage medium and intelligent terminal.

[0006] In a first aspect, the present application provides an accumulator air pressure detection method, which adopts the following technical solution: An accumulator air pressure detection method, comprising: Receive detection instructions; When receiving the detection instruction, the first solenoid valve in the preset hydraulic system is controlled to be closed to control the disconnection between the high-pressure oil source and the hydraulic accumulator, and the second solenoid valve in the preset hydraulic system is controlled to be opened to control the accumulator in the hydraulic system to release oil. 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 is provided with an oil inlet pipe connected to an external high-pressure oil source. The first solenoid valve is arranged on the oil inlet pipe to control the connection and disconnection between the high-pressure oil source and the hydraulic accumulator. The accumulator is provided with an oil outlet pipe connected to an external oil tank. The second solenoid valve is arranged on the oil outlet pipe to control the connection and disconnection between the accumulator and the oil tank. The accumulator is provided with a pressure detector for detecting the inflation pressure. The accumulator is also provided with an air inlet pipe for replenishing gas and an air discharge pipe for releasing gas. The third solenoid valve is arranged on the air inlet pipe to control the connection and disconnection between the accumulator and the external gas. The fourth solenoid valve is arranged on the air discharge pipe to control the connection and disconnection between the accumulator and the external gas. Get the inflation pressure; When the inflation pressure no longer changes, the inflation pressure is compared with a preset set value and a comparison result is obtained; Based on the comparison result, the corresponding adjustment plan is found from the preset operation database and executed.

[0007] By adopting the above technical solution, the opening and closing of the corresponding pipelines are controlled by solenoid valves, thereby realizing automatic detection, and the readings can also be read online and adjusted automatically, without the need for people to go to the corresponding places in person to operate and observe, thus saving labor costs and improving the efficiency of detection.

[0008] Optionally, a method for checking the inflation pressure is also included, the method comprising: Obtain the liquid height in the oil tank after receiving the detection command, and define the liquid height just after receiving the detection command as the initial liquid height; The liquid height is defined as the final liquid height when the inflation pressure no longer changes; Determining the amount of oil to be drained based on the initial liquid height, the final liquid height, and a preset tank size; When the discharged oil volume is the same as the preset standard oil volume, the inflation pressure is output; When the discharged oil volume is less than the standard oil volume, an alarm signal is output.

[0009] By adopting the above technical solution, whether the oil has been completely discharged is determined by the amount of oil discharged, thereby ensuring that the space is maximized during inflation pressure detection and improving the accuracy of inflation pressure detection.

[0010] Optionally, the method of outputting an alarm signal when the discharged oil volume is less than the standard oil volume includes: Control the fourth solenoid valve to close to control the air discharge pipe to close, and open the third solenoid valve to control the air intake pipe to open, and continue to determine the amount of oil discharged; When the amount of oil released increases, the third solenoid valve continues to be opened to control the opening of the intake pipe; The air intake volume is obtained while the oil discharge volume remains unchanged; When the discharged oil volume is still less than the standard oil volume, an alarm signal is output; When the released oil volume is equal to the standard oil volume, the third solenoid valve is controlled to be closed to control the air intake pipe to be closed, and the fourth solenoid valve is opened to control the air release pipe to be opened and obtain the air release volume; When the exhaust volume is equal to the intake volume, the fourth solenoid valve is controlled to be closed to control the exhaust pipe to be closed.

[0011] By adopting the above technical solution, the inflation pressure is further increased to generate a sufficiently large thrust to discharge all the oil, thereby reducing the situation where the internal inflation pressure cannot be discharged due to the low internal inflation pressure, which affects the measurement value of the internal inflation pressure, and further improves the accuracy of inflation pressure detection.

[0012] Optionally, the method for obtaining the air intake volume when the oil discharge volume remains unchanged includes: Obtain the initial inflation pressure when the amount of discharged oil remains unchanged; Continue to intake a preset test intake volume and obtain a first changed charging pressure; Then continue to test the intake volume and obtain the second change of charging pressure; determining a feedback result based on the first changed inflation pressure and the second changed inflation pressure; When the feedback result is a preset leakage result, a leakage alarm signal is output; The intake air volume is obtained when the feedback result is a preset normal result.

[0013] By adopting the above technical solution, the changing law of the inflation pressure is obtained under the condition that the amount of released oil remains unchanged, that is, the volume occupied by the internal gas remains unchanged. If there is leakage during the change process, the leakage information is output.

[0014] Optionally, a method for continuing to use the system after executing the adjustment plan is also included, the method comprising: Control the first solenoid valve to open, control the second solenoid valve to close and obtain the oil inlet amount and oil inlet pressure; When the oil inlet pressure is equal to the preset critical maximum pressure, the oil inlet amount at this time is defined as the current oil inlet amount; When the current oil inflow volume is equal to the preset oil filling volume, the first solenoid valve is closed, and then the subsequent operation is waited; When the current oil inflow is less than the full oil volume, the second solenoid valve is opened, and the preset return valve is opened, the hydraulic system further comprises a return valve, the accumulator is provided 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; Get the oil output; Determine the oil quantity difference based on the oil inflow and oil outflow; When the oil volume difference is less than the full oil volume, the first solenoid valve, the second solenoid valve and the return valve continue to be opened; When the oil quantity difference is equal to the filling oil quantity, the first solenoid valve and the second solenoid valve are controlled to be closed, and the return valve is controlled to be closed.

[0015] By adopting the above technical solution, since the amount of oil input each time is fixed, when it is found that the oil amount is poor, that is, not so much oil is needed, it means that there is air inside. At this time, the air is discharged by circulating the oil, thereby improving the purity of the hydraulic oil.

[0016] Optionally, when the current oil inflow volume is less than the full oil volume, the method of opening the second solenoid valve and opening the return valve includes: The first solenoid valve and the fourth solenoid valve are closed while the second solenoid valve and the return valve are opened, and the third solenoid valve is opened, and the first boosted oil output and the first boosted air intake are obtained; When the first boost oil output is equal to the preset minimum space oil output, the second solenoid valve is closed and a third variable charging pressure is obtained; When the third changed charging pressure is equal to the critical maximum pressure, the first solenoid valve is opened, the first boosted intake air volume at this time is defined as the current first boosted intake air volume, and the third solenoid valve is closed; When the oil volume difference is equal to the full oil volume, the first solenoid valve and the second solenoid valve are controlled to be closed, and after the return valve is controlled to be closed, the fourth solenoid valve is opened to obtain the pressure relief and air release volume; The fourth solenoid valve is closed when the pressure relief air volume is equal to the current first boost air volume.

[0017] By adopting the above technical solution, the inflation pressure is increased to the maximum, so that the volume occupied by the gas is larger, the volume of the oil inside the accumulator is reduced, thereby reducing the amount of circulating oil required and saving oil costs.

[0018] Optionally, another operation method is also included when the current oil intake is less than the preset filling oil volume, the method comprising: Determine the oil shortage amount based on the current oil intake amount and the filled oil amount; The second solenoid valve and the return valve are opened, the first solenoid valve and the fourth solenoid valve are closed, and the third solenoid valve is opened, and the second boosted air intake amount and the second boosted oil output amount are obtained; When the second boost oil output is equal to the preset separation height oil output, the second solenoid valve is closed and a fourth variable charging pressure is obtained; When the fourth variable charging pressure is equal to 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 oil filling amount is obtained, and the second boosted air intake amount at this time is defined as the current second boosted air intake amount, and the accumulator is provided with a gas release valve located at the gas-oil separation height; When the additional oil filling amount is equal to the empty oil amount, the gas release valve is closed and the fourth solenoid valve is controlled to open to discharge the gas of the current second boost intake amount, and then the first solenoid valve continues to open to make the current oil intake amount equal to the filling oil amount.

[0019] By adopting the above technical solution, when the gas inside the oil cannot be discharged, a gas dispersion valve is set above the accumulator, and the air is discharged when the upper liquid surface of the oil moves to this position, thereby improving the efficiency of air discharge.

[0020] In a second aspect, the present application provides an accumulator air pressure detection system, which adopts the following technical solution: An accumulator air pressure detection system, comprising: An acquisition module is used to obtain detection instructions, inflation pressure, liquid height, air intake, air discharge, oil intake, oil intake pressure and oil output; A memory for storing a program of a control method of any of the above-mentioned accumulator air pressure detection methods; The program in the processor memory can be loaded and executed by the processor to implement any of the above-mentioned control methods for detecting the air pressure of the accumulator.

[0021] By adopting the above technical solution, the opening and closing of the corresponding pipelines are controlled by solenoid valves, thereby realizing automatic detection, and the readings can also be read online and adjusted automatically, without the need for people to go to the corresponding places in person to operate and observe, thus saving labor costs and improving the efficiency of detection.

[0022] In the third aspect, the present application provides a smart terminal, which adopts the following technical solution: The intelligent terminal comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and execute any one of the above-mentioned accumulator air pressure detection methods.

[0023] By adopting the above technical solution, the opening and closing of the corresponding pipelines are controlled by solenoid valves, thereby realizing automatic detection, and the readings can also be read online and adjusted automatically, without the need for people to go to the corresponding places in person to operate and observe, thus saving labor costs and improving the efficiency of detection.

[0024] Fourthly, the present application provides a computer storage medium that can store corresponding programs and has the characteristics of fast interaction with memory big data.

[0025] Computer readable storage medium, using 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 accumulator air pressure detection methods.

[0026] By adopting the above technical solution, the opening and closing of the corresponding pipelines are controlled by solenoid valves, thereby realizing automatic detection, and the readings can also be read online and adjusted automatically, without the need for people to go to the corresponding places in person to operate and observe, thus saving labor costs and improving the efficiency of detection.

[0027] In summary, the present application includes at least the following beneficial technical effects: 1. Through automated detection and automatic adjustment, there is no need for people to go to the corresponding places to operate and observe in person, which saves labor costs and improves the efficiency of detection; 2. Determine whether the oil has been completely drained by measuring the amount of oil removed, thereby maximizing the space for inflation pressure detection and improving the accuracy of inflation pressure detection; 3. When it is found that the oil volume is poor, that is, not so much oil is needed, it means that there is air inside. At this time, the air can be discharged by circulating the oil, thereby improving the purity of the hydraulic oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a flow chart of an accumulator air pressure detection method in an embodiment of the present application.

[0029] Figure 2 It is a structural schematic diagram of the hydraulic system in an embodiment of the present application.

[0030] Figure 3 It is a flow chart of the method for checking the inflation pressure in the embodiment of the present application.

[0031] Figure 4 It is a flow chart of a method for outputting an alarm signal when the amount of discharged oil is less than the standard amount of oil in an embodiment of the present application.

[0032] Figure 5 It is a flow chart of a method for obtaining the intake air volume when the discharged oil volume remains unchanged in an embodiment of the present application.

[0033] Figure 6 It is a flowchart of the method for continuing to use after executing the adjustment plan in an embodiment of the present application.

[0034] Figure 7 It is a flow chart of a method for opening the second solenoid valve and opening the reflux valve when the current oil intake amount is less than the filling oil amount in an embodiment of the present application.

[0035] Figure 8 It is a flow chart of another operation method when the current oil intake amount is less than the preset filling oil amount in the embodiment of the present application.

[0036] Fig. 9 It is a system module diagram of an accumulator air pressure detection method in an embodiment of the present application.

[0037] Explanation of the accompanying drawings: 1. Accumulator; 11. Oil inlet pipe; 12. Oil outlet pipe; 13. Air intake pipe; 14. Air release 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 DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-Figure 9It 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.

[0039] The present application embodiment discloses a method for detecting the air pressure of an accumulator 1. Figure 1 , an accumulator air pressure detection method comprises: Step 100: Receive a detection instruction.

[0040] The detection instruction is a manual input instruction for detecting the inflation pressure, and the receiving method is a manual input method.

[0041] Step 101: upon receiving a detection instruction, the first solenoid valve 2 in the preset hydraulic system is controlled to be closed to disconnect the high-pressure oil source from the hydraulic accumulator 1, and the second solenoid valve 3 in the preset hydraulic system is controlled to be opened to drain the oil from the accumulator 1 in the hydraulic system.

[0042] 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 area and an oil area.

[0043] The accumulator 1 is provided with an oil inlet pipe 11 for communicating with an external high-pressure oil source. The first solenoid valve 2 is provided on the oil inlet pipe 11 to control the on-off between the accumulator 1 and the high-pressure oil source, i.e., the on-off of the oil inlet pipe 11. The accumulator 1 is provided with an oil outlet pipe 12 for communicating with an external oil tank. The second solenoid valve 3 is provided on the oil outlet pipe 12 to control the on-off between the accumulator 1 and the oil tank, i.e., the on-off of the oil outlet pipe 12. The accumulator 1 is provided with a pressure detector 8 for detecting the inflation pressure in the accumulator 1. The accumulator 1 is also provided with an air inlet pipe 13 for replenishing gas inside. The accumulator 1 is provided with a vent pipe 14 for venting gas. The third solenoid valve 4 is provided on the air inlet pipe 13 to control the on-off between the accumulator 1 and the external gas. The fourth solenoid valve 5 is provided on the vent pipe 14 to control the on-off between the accumulator 1 and the external gas.

[0044] like Figure 2 As shown, the oil inlet pipe 11 and the oil outlet pipe 12 are both on the lower side of the accumulator 1 , while the air inlet pipe 13 and the air discharge pipe 14 are both on the upper side of the accumulator 1 .

[0045] The accumulator 1 is also provided with a gas dispersion valve 6 for separating the gas and oil mixed in the oil layer.

[0046] The hydraulic system further comprises a return valve 7. A return pipe 15 is mounted 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.

[0047] When the detection instruction is received, it means that the oil in the accumulator 1 needs to be drained, so the second solenoid valve 3 needs to be opened to discharge the oil into the oil tank.

[0048] Step 102: Obtain inflation pressure.

[0049] The charging pressure is the pressure of the gas in the accumulator 1 .

[0050] Step 103: When the inflation pressure no longer changes, the inflation pressure is compared with a preset set value and a comparison result is obtained.

[0051] The set value is a standard value set artificially, that is, the inflation pressure of the accumulator 1 should be this value in theory when it is used normally. The comparison result is the result obtained by comparing the inflation pressure with the set value, including how much less or more atmospheric pressure it is.

[0052] Step 104: Based on the comparison result, a corresponding adjustment plan is searched from a preset operation database and the adjustment plan is executed.

[0053] The adjustment scheme is a scheme for adjusting the gas in the accumulator 1, including inflation and deflation. The database stores the mapping relationship between the comparison result and the adjustment scheme. The staff in this field operates according to the actual situation, and then makes the inflation pressure reach the set value. When the system receives the corresponding comparison result, it automatically finds the corresponding adjustment scheme from the database and outputs it.

[0054] Reference Figure 3 , and also includes a method for checking the inflation pressure, the method comprising: Step 200: Obtain the liquid height in the oil tank after receiving the detection instruction, and define the liquid height when the detection instruction is just received as the initial liquid height.

[0055] The liquid height is the height of the oil in the oil tank, which can be obtained by a depth detector.

[0056] Step 201: When the inflation pressure no longer changes, define the liquid height as the final liquid height.

[0057] When the inflation pressure no longer changes, the oil has been drained.

[0058] Step 202: Determine the amount of oil to be discharged based on the initial liquid height, the final liquid height and the preset oil tank size.

[0059] The tank size is the size of the tank that holds the oil, including length, width, and height. The amount of oil released is the volume of oil released after receiving the detection command. It is calculated by subtracting the initial liquid height from the final liquid height and multiplying it by the cross-sectional area.

[0060] Step 203: Outputting the inflation pressure when the released oil volume is the same as the preset standard oil volume.

[0061] The standard oil volume is the standard oil volume in the accumulator 1. It is generally the maximum oil volume.

[0062] Step 204: Output an alarm signal when the discharged oil volume is less than the standard oil volume.

[0063] The alarm signal is a signal when the oil is not completely discharged or there are other problems. The output is in the form of direct text display or flashing lights. If the amount of oil discharged is less than the standard amount of oil, it means that the oil is not completely discharged at this time, which is not a normal state, so staff are required to come to check and repair.

[0064] Reference Figure 4 The method for outputting an alarm signal when the discharged oil volume is less than the standard oil volume includes: Step 300: Control the fourth solenoid valve 5 to close to control the air release pipe 14 to close, and open the third solenoid valve 4 to control the air intake pipe 13 to open, and continue to determine the amount of oil released.

[0065] The accumulator 1 can be filled with gas by controlling the fourth solenoid valve 5 to be closed to control the exhaust pipe 14 to be closed, and opening the third solenoid valve 4 to control the intake pipe 13 to be opened.

[0066] Step 301: When the amount of oil released increases, the third solenoid valve 4 continues to be opened to control the intake pipe 13 to be opened.

[0067] When the amount of oil released increases, it means that the oil inside has not been drained. In this case, the air pressure can be increased to increase the thrust and thus drain the oil.

[0068] Step 302: Obtain the intake air volume when the discharged oil volume remains unchanged.

[0069] The intake volume is the volume of gas entering from the intake pipe 13. The volume can be obtained by setting a flow meter on the intake pipe 13. When the amount of discharged oil remains unchanged, it means that the oil can no longer be discharged by increasing the air pressure or the oil has been discharged. Therefore, the air pressure is increased at this time. In order to restore the gas volume in the accumulator 1 to the original size, the amount of discharged gas needs to be determined.

[0070] Step 303: Output an alarm signal when the discharged oil volume is still less than the standard oil volume.

[0071] When the amount of oil released is still less than the standard amount of oil, it means that there is still a problem, so the alarm signal is still output.

[0072] Step 304: When the released oil volume is equal to the standard oil volume, the third solenoid valve 4 is controlled to be closed to control the air intake pipe 13 to be closed, and the fourth solenoid valve 5 is opened to control the air release pipe 14 to be opened and obtain the air release volume.

[0073] The deflation volume is the volume of gas released from the deflation pipe 14. The deflation volume can be obtained by using a flow meter or by placing a vacuum bag at the location of the deflation pipe 14 and then measuring the pressure and volume of the gas inside to obtain the corresponding deflation volume.

[0074] When the amount of oil released is equal to the standard amount of oil, it means that the amount of oil released before was less than the standard amount of oil because it was not drained cleanly, so the gas can be released at this time.

[0075] Step 305: When the deflated air volume is equal to the intake air volume, the fourth solenoid valve 5 is controlled to be closed to control the deflated air pipe 14 to be closed.

[0076] When the deflated amount is equal to the intake amount, it indicates that the amount of gas inside the accumulator 1 has reached the original value, and deflation is not required. The fourth solenoid valve 5 is controlled to be closed to control the deflation pipe 14 to be closed, and then the charging pressure can be detected.

[0077] Reference Figure 5 , the method of obtaining the air intake volume when the oil discharge volume remains unchanged includes: Step 400: Obtain the initial inflation pressure when the amount of released oil remains unchanged.

[0078] The initial inflation pressure is the inflation pressure when the amount of oil released remains unchanged.

[0079] Step 401: Continue to intake a preset test intake volume and obtain a first changed charging pressure.

[0080] The test intake volume is the volume of gas introduced into the accumulator 1 to test whether there is leakage inside the accumulator 1 and which will not cause the accumulator 1 to explode. The first variable inflation pressure is the inflation pressure after the test intake volume is introduced.

[0081] Step 402: Then continue to test the intake volume and obtain the second changed charging pressure.

[0082] The second changed inflation pressure is the inflation pressure after re-entering the test intake volume.

[0083] Step 403: Determine a feedback result based on the first changed inflation pressure and the second changed inflation pressure.

[0084] The feedback result is the result of whether there is a leak. The determination method is to establish a set of two-variable linear equations through the initial inflation pressure, the first variable inflation pressure and the second variable inflation pressure, one of the unknowns is the gas volume in the accumulator 1, and the other is the leakage, that is, the gas volume multiplied by the inflation pressure plus the test intake volume minus the leakage multiplied by the standard air pressure equals the first variable inflation pressure multiplied by the gas volume; the other equation is the gas volume multiplied by the first variable inflation pressure plus the test intake volume minus the leakage multiplied by the standard air pressure equals the second variable inflation pressure multiplied by the gas volume. When the leakage is zero, the feedback result is a normal result, and when the leakage is a positive value, the feedback result is a leakage result.

[0085] Step 404: Outputting a leakage alarm signal when the feedback result is a preset leakage result.

[0086] The air leakage alarm signal is a signal to warn the user of air leakage. The output method can be a text output method.

[0087] Step 405: Obtain the intake air volume when the feedback result is a preset normal result.

[0088] When the feedback result is normal, it means there is no air leakage, and the air intake volume can be obtained normally.

[0089] Reference Figure 6 , and also includes a method for continuing to use after executing the adjustment plan, the method comprising: Step 500: Control the first solenoid valve 2 to open, control the second solenoid valve 3 to close, and obtain the oil inlet amount and oil inlet pressure.

[0090] The oil inlet amount is the amount of oil entering. It is obtained by a flow meter installed on the oil inlet pipe 11. The oil inlet pressure is the oil pressure. Here, the oil pressure can be obtained by a pressure gauge set on the upper surface of the oil layer of the accumulator 1. The first solenoid valve 2 is controlled to open, and the second solenoid valve 3 is controlled to close, so that the accumulator 1 is filled with oil.

[0091] Step 501: When the oil inlet pressure is equal to the preset critical maximum pressure, the oil inlet amount at this time is defined as the current oil inlet amount.

[0092] The critical maximum pressure is the pressure value when the oil volume can no longer be increased. It is obtained by manually measuring the pressure value when the oil volume cannot be passed in. When the oil inlet pressure is equal to the critical maximum pressure, it means that the oil can no longer be passed in.

[0093] Step 502: When the current oil intake amount is the same as the preset filling oil amount, the first solenoid valve 2 is closed, and then subsequent operations are waited for.

[0094] The filling oil volume is the oil volume when the accumulator 1 is fully loaded. It is obtained by manual measurement. When the current oil intake volume is the same as the preset filling oil volume, it means that there are no impurities inside and the accumulator has returned to a normal working state.

[0095] Step 503: When the current oil inflow volume is less than the filling oil volume, the second solenoid valve 3 is opened, and the preset reflux valve 7 is opened.

[0096] When the forward oil volume is less than the full oil volume, it means that there is air on the oil storage side of the accumulator 1. Therefore, the second solenoid valve 3 and the return valve 7 are opened, and the first solenoid valve 2 is still in the open state to circulate the oil, so that the bubbles formed by the air come out of the accumulator 1 along with the oil.

[0097] It should be noted that since the entire pipe is a circulating 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.

[0098] Step 504: Obtain the oil output.

[0099] The oil output is the amount of oil released from the oil outlet pipe 12 after the second solenoid valve 3 is opened. The amount of oil can be obtained by using a flow meter.

[0100] Step 505: Determine the oil quantity difference based on the oil inflow and oil outflow.

[0101] The oil volume difference is the difference between the volume of the oil entering the accumulator 1 and the volume of the oil leaving the accumulator 1, and is also the amount of oil remaining in the accumulator 1. The calculation method is to subtract the oil volume from the oil volume. The oil volume here also includes the volume before the second solenoid valve 3 is opened.

[0102] Step 506: When the oil volume difference is less than the full oil volume, the first solenoid valve 2, the second solenoid valve 3 and the return valve 7 continue to be opened.

[0103] When the oil quantity difference is less than the filling oil quantity, it means that the amount of oil remaining in the accumulator 1 is less than the filling oil quantity, which means that the accumulator 1 is not fully filled, so it is necessary to continue to discharge bubbles.

[0104] Step 507: When the oil volume difference is equal to the full oil volume, the first solenoid valve 2 and the second solenoid valve 3 are controlled to be closed, and the return valve 7 is controlled to be closed.

[0105] When the oil volume difference is equal to the filling oil volume, it indicates that the bubbles have been discharged, so the first solenoid valve 2 and the second solenoid valve 3 are both controlled to be closed, and the reflux valve 7 is controlled to be closed.

[0106] Reference Figure 7 The method of opening the second solenoid valve 3 and opening the return valve 7 when the current oil inflow amount is less than the filling oil amount includes: Step 600: Open the second solenoid valve 3 and the return valve 7 while closing 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.

[0107] The first solenoid valve 2 and the fourth solenoid valve 5 are closed while the second solenoid valve 3 and the return valve 7 are opened, and the third solenoid valve 4 is opened, so that gas enters the accumulator 1 and the excess oil is discharged. The first boost oil output is the oil output when gas enters the accumulator 1 and the excess oil is discharged. The first boost air intake is the air intake when gas enters the accumulator 1 and the excess oil is discharged.

[0108] Step 601: When the first boost oil output is equal to the preset minimum space oil output, the second solenoid valve 3 is closed and a third variable inflation pressure is obtained.

[0109] The minimum space oil output is the amount of oil output when the oil in the accumulator 1 is the least. It is also the oil output when the piston of the accumulator 1 moves from the highest point to the lowest point. The third variable inflation pressure is the inflation pressure when the piston of the accumulator 1 moves from the highest point to the lowest point. When the first boost oil output is equal to the preset minimum space oil output, it means that the space occupied by the gas has been maximized and the oil in the accumulator 1 is the least.

[0110] Step 602: when the third changed charging pressure is equal to the critical maximum pressure, the first solenoid valve 2 is opened, the first boosted intake air volume at this time is defined as the current first boosted intake air volume, and the third solenoid valve 4 is closed.

[0111] When the third change charging pressure is equal to the critical maximum pressure, it means that the oil pressure and the air pressure are balanced, and the piston of the accumulator 1 will not move. The first solenoid valve 2 is opened, and oil circulation can be performed. The third solenoid valve 4 is closed so that the third change charging pressure does not change.

[0112] Step 603: When the oil volume difference is equal to the full oil volume, the first solenoid valve 2 and the second solenoid valve 3 are controlled to be closed, and after the return valve 7 is controlled to be closed, the fourth solenoid valve 5 is opened to obtain the pressure relief and air release volume.

[0113] The decompression and deflation volume is the volume of gas flowing through the outlet pipe when the internal air pressure is released. The method of obtaining it can be the same as the deflation volume, which will not be described in detail here.

[0114] When the oil volume difference is equal to the full oil volume, it means that the bubbles in the oil have been discharged. At this time, it is necessary to restore to the original state, so the first solenoid valve 2 and the second solenoid valve 3 are controlled to be closed, and the return valve 7 is controlled to be closed. Then, the air is released, so the fourth solenoid valve 5 is opened.

[0115] The oil volume difference here does not include the oil volume discharged when the gas increases. Therefore, although the space inside the accumulator 1 has changed, the oil volume difference remains unchanged, so it still needs to be compared with the filling oil volume.

[0116] Step 604: When the pressure relief air volume is equal to the current first pressurized intake air volume, the fourth solenoid valve 5 is closed.

[0117] When the pressure relief air volume is equal to the current first boost air volume, it means that the additional amount of gas has been discharged, so the fourth solenoid valve 5 can be closed at this time.

[0118] Reference Figure 8 , and also includes another operation method when the current oil intake is less than the preset filling oil volume, the method comprising: Step 700: Determine the oil shortage amount based on the current oil intake amount and the filling oil amount.

[0119] The difference between the empty oil volume, the full oil volume and the current oil intake volume.

[0120] Step 701: Open the second solenoid valve 3 and the return valve 7 while closing 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 amount and the second boosted oil output amount.

[0121] The second boosted intake air amount is the amount of gas increased after the operation in step 701. The second boosted oil output amount is the amount of oil flowing out after the operation in step 701.

[0122] Open the second solenoid valve 3 and the return valve 7, close the first solenoid valve 2 to allow the oil to begin to be discharged. Close the fourth solenoid valve 5, and open the third solenoid valve 4 to allow the gas to begin to increase. At this time, since the oil layer is still at the highest point, it needs to move downward, so the oil is released and the gas is charged, so the second boost air intake and the second boost oil output are obtained.

[0123] Step 702: When the second boost oil output is equal to the preset separation height oil output, the second solenoid valve 3 is closed and a fourth variable inflation pressure is obtained.

[0124] 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, and the height here is the height of the gas release valve. When the second boost oil output is equal to the preset separation height oil output, it means that the oil has dropped to the height, so it is not necessary to release the oil. The fourth change of the inflation pressure is the inflation pressure of the accumulator 1 after step 701.

[0125] Step 703: When the fourth changed inflation pressure is equal to 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 oil filling amount is obtained, and the second boost intake amount at this time is defined as the current second boost intake amount.

[0126] The additional oil filling amount is the oil amount that can enter after the first solenoid valve 2 is opened.

[0127] When the fourth change inflation pressure is equal to the critical maximum pressure, it indicates that the two sides of the interior are balanced at this time, and even if more oil is added to the interior, it will not move, so the gas relief valve and the first solenoid valve 2 are opened at this time to discharge the air.

[0128] In order to facilitate the exhaust of air, a mixer can be set inside to stir the air to the gas dispersion valve.

[0129] Step 704: When the additional oil volume is equal to the empty oil volume, close the gas release valve and control the fourth solenoid valve 5 to open to discharge the gas of the current second boost intake volume, and then continue to open the first solenoid valve 2 to make the current oil intake volume equal to the filling oil volume.

[0130] When the additional oil volume is equal to the empty oil volume, it means that the internal air has been discharged, and the gas release valve can be closed and the fourth solenoid valve 5 can be controlled to open to discharge the gas of the current second boost intake volume. Based on the same inventive concept, an embodiment of the present invention provides an accumulator air pressure detection system.

[0131] Reference Fig. 9 , an accumulator air pressure detection system, comprising: An acquisition module is used to obtain detection instructions, inflation pressure, liquid height, air intake, air discharge, oil intake, oil intake pressure and oil output; A memory for storing a program of a control method for an accumulator air pressure detection method; The program in the memory can be loaded and executed by the processor to implement a control method for an accumulator air pressure detection method.

[0132] 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.

[0133] An embodiment of the present invention provides a computer-readable storage medium storing a computer program capable of being loaded and executed by a processor for a method for detecting air pressure of an accumulator.

[0134] 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.

[0135] 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 executes an accumulator air pressure detection method.

[0136] 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 pressure of an accumulator, characterized in that: include: Receive detection instructions; When receiving a detection instruction, the first solenoid valve (2) in the preset hydraulic system is controlled to be closed to control the disconnection between the high-pressure oil source and the hydraulic accumulator (1), and the second solenoid valve (3) in the preset hydraulic system is controlled to be opened to control the accumulator (1) in the hydraulic system to release oil. The hydraulic system comprises 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) connected to an external high-pressure oil source. The first solenoid valve (2) is provided 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) connected to an external oil tank, the second solenoid valve (3) is provided on the oil outlet pipe (12) to control the on-off between the accumulator (1) and the oil tank, the accumulator (1) is provided with a pressure detector (8) for detecting the inflation pressure, the accumulator (1) is also provided with an air intake pipe (13) for replenishing gas and an air discharge pipe (14) for releasing gas, the third solenoid valve (4) is provided on the air intake pipe (13) to control the on-off between the accumulator (1) and the external gas, and the fourth solenoid valve (5) is provided on the air discharge pipe (14) to control the on-off between the accumulator (1) and the external gas; Get the inflation pressure; When the inflation pressure no longer changes, the inflation pressure is compared with a preset set value and a comparison result is obtained; Based on the comparison result, the corresponding adjustment plan is found from the preset operation database and executed.

2. The method for detecting air pressure of an accumulator according to claim 1, characterized in that: Also included is a method for checking the inflation pressure, the method comprising: Obtain the liquid height in the oil tank after receiving the detection command, and define the liquid height just after receiving the detection command as the initial liquid height; The liquid height is defined as the final liquid height when the inflation pressure no longer changes; Determining the amount of oil to be drained based on the initial liquid height, the final liquid height, and a preset tank size; When the discharged oil volume is the same as the preset standard oil volume, the inflation pressure is output; When the discharged oil volume is less than the standard oil volume, an alarm signal is output.

3. The method for detecting air pressure of an accumulator according to claim 2, characterized in that: The method of outputting an alarm signal when the discharged oil volume is less than the standard oil volume includes: Controlling the fourth solenoid valve (5) to close so as to control the air discharge pipe (14) to close, and opening the third solenoid valve (4) to control the air intake pipe (13) to open, and continuing to determine the amount of oil discharged; When the amount of discharged oil increases, the third solenoid valve (4) continues to be opened to control the air intake pipe (13) to be opened; The air intake volume is obtained while the oil discharge volume remains unchanged; When the discharged oil volume is still less than the standard oil volume, an alarm signal is output; When the discharged oil volume is equal to the standard oil volume, the third solenoid valve (4) is controlled to be closed to control the air intake pipe (13) to be closed, and the fourth solenoid valve (5) is opened to control the air discharge pipe (14) to be opened and obtain the air discharge volume; When the amount of deflated air is equal to the amount of inlet air, the fourth solenoid valve (5) is controlled to be closed so as to control the deflated air pipe (14) to be closed.

4. The method for detecting air pressure of an accumulator according to claim 3, characterized in that: Methods for obtaining the air intake volume while the oil discharge volume remains unchanged include: Obtain the initial inflation pressure when the amount of discharged oil remains unchanged; Continue to intake a preset test intake volume and obtain a first changed charging pressure; Then continue to test the intake volume and obtain the second change of charging pressure; determining a feedback result based on the first changed inflation pressure and the second changed inflation pressure; When the feedback result is a preset leakage result, a leakage alarm signal is output; The intake air volume is obtained when the feedback result is a preset normal result.

5. The method for detecting air pressure of an accumulator according to claim 3, characterized in that: Also included is a method for continuing to use after executing the adjustment plan, the method comprising: Controlling the first solenoid valve (2) to open, controlling the second solenoid valve (3) to close, and obtaining the oil inlet amount and oil inlet pressure; When the oil inlet pressure is equal to the preset critical maximum pressure, the oil inlet amount at this time is defined as the current oil inlet amount; When the current oil intake amount is equal to the preset oil filling amount, the first solenoid valve (2) is closed, and then a subsequent operation is waited for; When the current oil intake amount is less than the filling oil amount, the second solenoid valve (3) is opened, and the preset return valve (7) is opened, the hydraulic system further comprising a 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; Get the oil output; Determine the oil quantity difference based on the oil inflow and oil outflow; When the oil volume difference is less than the full oil volume, the first solenoid valve (2), the second solenoid valve (3) and the return valve (7) continue to be maintained in an open state; When the oil volume difference is equal to the full oil volume, the first solenoid valve (2) and the second solenoid valve (3) are both controlled to be closed, and the return valve (7) is controlled to be closed.

6. The method for detecting gas pressure of an accumulator according to claim 5, characterized in that: The method of opening the second solenoid valve (3) and opening the return valve (7) when the current oil inflow amount is less than the filling oil amount comprises: The first solenoid valve (2) and the fourth solenoid valve (5) are closed while the second solenoid valve (3) and the return valve (7) are opened, and the third solenoid valve (4) is opened, and a first boosted oil output volume and a first boosted air intake volume are obtained; When the first boost oil output is equal to the preset minimum space oil output, the second solenoid valve (3) is closed and a third variable inflation pressure is obtained; When the third changed charging pressure is equal to the critical maximum pressure, the first solenoid valve (2) is opened, the first boosted intake air volume at this time is defined as the current first boosted intake air volume, and the third solenoid valve (4) is closed; When the oil volume difference is equal to the full oil volume, the first solenoid valve (2) and the second solenoid valve (3) are controlled to be closed, and after the return valve (7) is controlled to be closed, the fourth solenoid valve (5) is opened and the pressure relief and air release volume is obtained; When the pressure relief air volume is equal to the current first pressurized air volume, the fourth solenoid valve (5) is closed.

7. The method for detecting gas pressure of an accumulator according to claim 5, characterized in that: Also included is another operation method when the current oil intake is less than the preset filling oil volume, the method comprising: Determine the oil shortage amount based on the current oil intake amount and the filled oil amount; The second solenoid valve (3) and the return valve (7) are opened while the first solenoid valve (2) and the fourth solenoid valve (5) are closed, and the third solenoid valve (4) is opened, and a second boosted air intake volume and a second boosted oil output volume are obtained; When the second boost oil output is equal to the preset separation height oil output, closing the second solenoid valve (3) and obtaining a fourth variable inflation pressure; When the fourth variable charging pressure is equal to 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, and the second boosted air intake volume at this time is defined as the current second boosted air intake volume, and the accumulator (1) is provided with a gas release valve located at the gas-oil separation height; When the additional oil volume is equal to the empty oil volume, the gas release valve is closed and the fourth solenoid valve (5) is controlled to open to discharge the gas of the current second boost intake volume, and then the first solenoid valve (2) continues to open to make the current oil intake volume equal to the filling oil volume.

8. An accumulator air pressure detection system, characterized in that: include: An acquisition module is used to obtain detection instructions, inflation pressure, liquid height, air intake, air discharge, oil intake, oil intake pressure and oil output; A memory for storing a program of a control method of an accumulator air pressure 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 control method for an accumulator air pressure detection method as described in any one of claims 1 to 7.

9. Intelligent terminal, characterized in that: The invention comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes a method for detecting air pressure of an accumulator as claimed in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The invention stores a computer program which can be loaded by a processor and executes an accumulator gas pressure detection method according to any one of claims 1 to 7.

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