A continuous pressurization method and system

Abstract

The present invention relates to the field of continuous supercharging technology, and specifically discloses a continuous supercharging method and system, the method comprising: controlling a first supercharging mechanism to start working and controlling and adjusting the working state of a first reversing mechanism according to real-time pressure information of a working oil cylinder, so as to deliver oil to a low-pressure end of the first supercharging mechanism; adjusting the working states of the first reversing mechanism and the second reversing mechanism according to real-time stroke displacement information fed back by a first detection unit and real-time stroke displacement information fed back by a second detection unit, so as to simultaneously supply oil to the low-pressure end of the first supercharging mechanism and the low-pressure end of the second supercharging mechanism, or simultaneously supply oil to the low-pressure end of the first supercharging mechanism and the high-pressure input end of the second supercharging mechanism, or simultaneously supply oil to the low-pressure end of the second supercharging mechanism and the high-pressure input end of the first supercharging mechanism, until the real-time pressure of the working oil cylinder meets a preset target pressure value, thereby achieving the purpose of continuous multiple supercharging, and having the advantages of stable supercharging and high supercharging efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of continuous supercharging, and in particular to a continuous supercharging method and system. Background Art

[0002] In the field of hydraulic machinery, in order to reduce the size of the cylinder and the workbench, and thus reduce the overall equipment volume to save costs, more and more applications choose to increase the working pressure of the cylinder; however, as the tonnage of the equipment increases, the size of the cylinder also increases, which puts higher requirements on the output capacity of the booster cylinder; in some cases, a single booster cylinder cannot simultaneously meet the sufficient stroke required by the working cylinder to reach the preset working pressure. Therefore, the industry usually increases the number of booster cylinders or adopts a reciprocating booster system to meet the demand.

[0003] The method of increasing the number of boost cylinders requires more material and installation space, complicates the oil system, and increases production and installation costs. Especially when the demand is huge, the cost of configuring the size and number of boost cylinders according to traditional methods will become extremely high.

[0004] As for the reciprocating booster system, it has the problem of unstable pressure output; when the double piston rod of the traditional reciprocating booster cylinder switches from one end to the other end, the cylinder needs to return, and it takes a process to establish pressure output at the other end. When the one-way valve at the high-pressure output end is closed, there will be a certain amount of leakage. These factors inevitably lead to pressure fluctuations, usually between 10 and 20MPa. The higher the pressure, the smaller the fluctuation is. When the pressure is low, the fluctuation is larger. When the product process is more sensitive to pressure changes, this pressure fluctuation will undoubtedly affect the quality and yield of the product. In addition, the repeated drop in pressure will also affect the cycle and efficiency of the entire pressurization process. Furthermore, the high-pressure end volume utilization rate of the traditional reciprocating booster system is low. Since the booster cylinder itself lacks displacement detection, it mainly relies on time to estimate the displacement of the piston rod. It often needs to switch to the other end for boosting before reaching the specified position, resulting in a low actual output volume of the booster cylinder.

[0005] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a continuous pressurization method, which can achieve continuous multiple pressurizations and has the advantages of reliable and stable pressurization process and high pressurization efficiency.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A continuous boosting method, the continuous boosting system comprises: a working oil cylinder, a control device, and a first reversing mechanism, a first boosting mechanism, a second boosting mechanism, a second reversing mechanism and a monitoring mechanism electrically connected to the control device respectively, the first reversing mechanism is used to transport oil to the working oil cylinder, the low-pressure end of the first boosting mechanism or the low-pressure end of the second boosting mechanism, and output it to the working oil cylinder through the high-pressure output end of the first boosting mechanism and the high-pressure output end of the second boosting mechanism, the second reversing mechanism is used to transport oil to the high-pressure input end of the first boosting mechanism or the high-pressure input end of the second boosting mechanism; the monitoring mechanism is used to obtain real-time pressure information of the working oil cylinder, the first boosting mechanism and the second boosting mechanism; the first boosting mechanism comprises a first detection unit for obtaining real-time stroke displacement information, the second boosting mechanism comprises a second detection unit for obtaining real-time stroke displacement information, the first detection unit and the second detection unit are electrically connected to the control device respectively; the continuous boosting method comprises the steps of:

[0009] Obtain the real-time pressure information of the working cylinder fed back by the monitoring mechanism, and determine whether the real-time pressure information meets the preset low-pressure working pressure;

[0010] If the conditions are met, the first boosting mechanism is controlled to start working, and the working state of the first reversing mechanism is controlled and adjusted to deliver oil to the low-pressure end of the first boosting mechanism;

[0011] When the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward buffering condition, the working state of the first reversing mechanism is controlled and adjusted to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism;

[0012] When the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward limit condition, the working states of the first reversing mechanism and the second reversing mechanism are controlled and adjusted to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the low-pressure end of the second boosting mechanism;

[0013] When the first boosting mechanism completes the return stroke, the working state of the second reversing mechanism is controlled and adjusted, and oil is delivered to the working cylinder through the second boosting mechanism;

[0014] When the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward buffering condition, the working state of the first reversing mechanism is controlled and adjusted to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism;

[0015] When the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward limit condition, the working states of the first reversing mechanism and the second reversing mechanism are controlled and adjusted to simultaneously deliver oil to the high-pressure input end of the second boosting mechanism and the low-pressure end of the first boosting mechanism;

[0016] When the second boosting mechanism completes the return stroke, the working state of the second reversing mechanism is controlled and adjusted, and oil is delivered to the working cylinder through the first boosting mechanism;

[0017] Determine whether the real-time pressure information fed back by the monitoring mechanism meets the preset target working pressure. If not, return to execute. When the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward buffer condition, control and adjust the working state of the first reversing mechanism to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism;

[0018] If the conditions are met, the working states of the first reversing mechanism and the second reversing mechanism are controlled and adjusted to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the high-pressure input end of the second boosting mechanism.

[0019] In the continuous pressurization method, the first reversing mechanism includes a first reversing valve, a second reversing valve, a third reversing valve, a sixth reversing valve, a first hydraulically controlled non-return valve and a second hydraulically controlled non-return valve electrically connected to the control device respectively, and the pressure source includes a first oil pump and a second oil pump; the first reversing valve and the sixth reversing valve are used to deliver the oil output by the first oil pump and the second oil pump to the working oil cylinder, the first hydraulically controlled non-return valve and the second reversing valve are used to deliver the oil to the low-pressure end of the first boosting mechanism, and the second hydraulically controlled non-return valve and the third reversing valve are used to deliver the oil to the low-pressure end of the second boosting mechanism; the second reversing mechanism includes a fourth reversing valve and a fifth reversing valve, and the fourth reversing valve is used to deliver the oil output by the first oil pump to the first boosting mechanism The high-pressure input end of the mechanism, the fifth reversing valve is used to transport the oil output by the second oil pump to the high-pressure input end of the second boosting mechanism; if the conditions are met, the first boosting mechanism is controlled to start working, and the working state of the first reversing mechanism is controlled and adjusted to transport oil to the low-pressure end of the first boosting mechanism, including: if the conditions are met, the first reversing valve and the sixth reversing valve are first controlled to reset, and then the first boosting mechanism is controlled to start working, and then the second reversing valve is controlled to switch, and the working state of the first hydraulically controlled one-way valve is adjusted according to the preset boosting pressure and the preset boosting flow rate to transport oil to the low-pressure end of the first boosting mechanism; if the conditions are not met, the oil output by the first oil pump and the second oil pump is respectively transported to the working cylinder through the first reversing valve and the sixth reversing valve.

[0020] In the continuous boosting method, when the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward buffer condition, the working state of the first reversing mechanism is controlled and adjusted to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism, including: when the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward buffer condition, the third reversing valve is controlled to be switched, and the working state of the second hydraulically controlled one-way valve is adjusted according to the preset boost pressure and the preset boost flow rate, so as to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism; when the real-time pressure value of the second boosting mechanism fed back by the monitoring mechanism is the same as the real-time pressure value of the first boosting mechanism, the first adjustment flow and the second adjustment flow are calculated; the working state of the first hydraulically controlled one-way valve is adjusted according to the calculated first adjustment flow, and the working state of the second hydraulically controlled one-way valve is adjusted according to the calculated second adjustment flow.

[0021] In the continuous boosting method, when the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward limit condition, the working states of the first reversing mechanism and the second reversing mechanism are controlled and adjusted to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the low-pressure end of the second boosting mechanism, including: when the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward limit condition, the second reversing valve is controlled to reset and the fourth reversing valve is controlled to reverse, and the working state of the first boosting mechanism is adjusted according to the preset return pressure and the preset return flow rate, so as to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the low-pressure end of the second boosting mechanism.

[0022] In the continuous boosting method, when the first boosting mechanism completes the return stroke, the working state of the second reversing mechanism is controlled and adjusted, and oil is delivered to the working cylinder through the second boosting mechanism, including: when the first boosting mechanism completes the return stroke, the fourth reversing valve is controlled to reset, and oil is delivered to the working cylinder through the second boosting mechanism.

[0023] In the continuous boosting method, when the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward buffer condition, the working state of the first reversing mechanism is controlled and adjusted to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism, including: when the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward buffer condition, the second reversing valve is controlled to be switched, and the working state of the first hydraulically controlled one-way valve is adjusted according to the preset boost pressure and the preset boost flow rate, so as to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism; when the real-time pressure value of the first boosting mechanism fed back by the monitoring mechanism is the same as the real-time pressure value of the second boosting mechanism, the third adjustment flow and the fourth adjustment flow are calculated; the working state of the first hydraulically controlled one-way valve is adjusted according to the calculated fourth adjustment flow, and the working state of the second hydraulically controlled one-way valve is adjusted according to the calculated third adjustment flow.

[0024] In the continuous boosting method, when the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward limit condition, the working states of the first reversing mechanism and the second reversing mechanism are controlled and adjusted to simultaneously deliver oil to the high-pressure input end of the second boosting mechanism and the low-pressure end of the first boosting mechanism, including: when the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward limit condition, the third reversing valve is controlled to reset and the fifth reversing valve is controlled to reverse, and the working state of the second boosting mechanism is adjusted according to the preset return pressure and the preset return flow rate, so as to simultaneously deliver oil to the high-pressure input end of the second boosting mechanism and the low-pressure end of the first boosting mechanism.

[0025] In the continuous boosting method, when the second boosting mechanism completes the return stroke, the working state of the second reversing mechanism is controlled and adjusted, and oil is delivered to the working cylinder through the first boosting mechanism, including: when the second boosting mechanism completes the return stroke, the fifth reversing valve is controlled to reset, and oil is delivered to the working cylinder through the first boosting mechanism.

[0026] In the continuous boosting method, the working cylinder is also connected to a third hydraulically controlled one-way valve. If the conditions are met, the working states of the first reversing mechanism and the second reversing mechanism are controlled and adjusted to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the high-pressure input end of the second boosting mechanism, including: if the conditions are met, the second reversing valve and the third reversing valve are controlled to reset, and the fourth reversing valve and the fifth reversing valve are controlled to switch, so as to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the high-pressure input end of the second boosting mechanism; when the first boosting mechanism and the second boosting mechanism complete the return stroke, the fourth reversing valve and the fifth reversing valve are controlled to reset; the first reversing valve and the sixth reversing valve are controlled to switch, and the third hydraulically controlled one-way valve is controlled to open, so as to realize the unloading and return stroke of the working cylinder.

[0027] The present invention also correspondingly provides a continuous pressurization system, which adopts any of the continuous pressurization methods described above to achieve work control.

[0028] Beneficial effects:

[0029] The present invention provides a continuous boosting method, which adjusts the working states of the first reversing mechanism and the second reversing mechanism according to the real-time stroke displacement information fed back by the first detection unit and the real-time stroke displacement information fed back by the second detection unit, so as to realize three states of simultaneous oil supply to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism, or simultaneous oil supply to the low-pressure end of the first boosting mechanism and the high-pressure input end of the second boosting mechanism, or simultaneous oil supply to the low-pressure end of the second boosting mechanism and the high-pressure input end of the first boosting mechanism, until the real-time pressure of the working oil cylinder meets the preset target working pressure, thereby achieving the purpose of continuous multiple boosting, and having the advantages of reliable and stable boosting process and high boosting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A first logic control diagram of the continuous pressurization method provided by the present invention;

[0031] Figure 2 This is a schematic structural diagram of the continuous pressurization system provided by the present invention.

[0032] Explanation of main component symbols: 1-working cylinder, 11-third hydraulically controlled one-way valve, 12-support function valve group, 21-first reversing valve, 22-second reversing valve, 23-third reversing valve, 24-first hydraulically controlled one-way valve, 25-second hydraulically controlled one-way valve, 26-sixth reversing valve, 31-first boosting cylinder, 32-first displacement sensor, 41-second boosting cylinder, 42-second displacement sensor, 51-fourth reversing valve, 52-fifth reversing valve, 61-first pressure sensor, 62-second pressure sensor, 63-third pressure sensor, 71-first one-way valve, 72-second one-way valve, 73-third one-way valve, 74-fourth one-way valve, 75-fifth one-way valve, 81-first oil pump, 82-second oil pump. DETAILED DESCRIPTION

[0033] The present invention provides a continuous pressurization method and system. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples.

[0034] In the description of the present invention, it should be understood that the terms "installation", "connection" and the like should be understood in a broad sense, and a person skilled in the art can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0035] See also Figure 1 and Figure 2 The present invention provides a continuous pressurization method, which is implemented by a continuous pressurization system. The continuous pressurization system includes a working cylinder 1, a control device, and a first reversing mechanism, a first pressurization mechanism, a second pressurization mechanism, a second reversing mechanism and a monitoring mechanism electrically connected to the control device respectively. The first reversing mechanism is used to transport oil to the working cylinder 1, the low-pressure end of the first pressurization mechanism or the low-pressure end of the second pressurization mechanism, and output it to the working cylinder 1 through the high-pressure output end of the first pressurization mechanism and the high-pressure output end of the second pressurization mechanism. The second reversing mechanism is used to transport oil to the high-pressure input end of the first pressurization mechanism or the high-pressure input end of the second pressurization mechanism; the monitoring mechanism is used to obtain real-time pressure information of the working cylinder 1, the first pressurization mechanism and the second pressurization mechanism; the first pressurization mechanism includes a first detection unit for obtaining real-time stroke displacement information, and the second pressurization mechanism includes a second detection unit for obtaining real-time stroke displacement information. The first detection unit and the second detection unit are electrically connected to the control device respectively.

[0036] For further information, see Figure 2 The monitoring mechanism includes a first pressure sensor 61, a second pressure sensor 62 and a third pressure sensor 63 which are electrically connected to the control device respectively. The first pressure sensor 61 is used to obtain the real-time internal pressure of the working cylinder 1, the second pressure sensor 62 is used to obtain the real-time working pressure of the first boosting mechanism, and the third pressure sensor 63 is used to obtain the real-time working pressure of the second boosting mechanism.

[0037] For further information, see Figure 2 , the structures of the first boosting mechanism and the second boosting mechanism are consistent; the first boosting mechanism includes a first one-way valve 71 and a plurality of first boosting cylinders 31 electrically connected to the control device, the first detection unit includes a plurality of first displacement sensors 32 electrically connected to the control device, and each first boosting cylinder 31 is connected to a first displacement sensor 32; the low-pressure end of the first boosting cylinder 31 located at the front side is connected to the output end of the first reversing mechanism, and the low-pressure ends of adjacent first boosting cylinders 31 are connected to each other; the high-pressure output end of the first boosting cylinder 31 located at the front side is connected to the input end of the working oil cylinder 1, and the high-pressure input end of the first boosting cylinder 31 located at the rear side is connected to the output end of the second reversing mechanism, and the high-pressure ends of adjacent first boosting cylinders 31 are connected to each other; the high-pressure output end of the first boosting mechanism is connected to the input end of the working oil cylinder 1 through the first one-way valve 71.

[0038] For further information, see Figure 2The first reversing mechanism includes a first reversing valve 21, a second reversing valve 22, a third reversing valve 23, a sixth reversing valve 26, a first hydraulically controlled non-return valve 24 and a second hydraulically controlled non-return valve 25, which are electrically connected to the control device respectively; the pressure source includes a first oil pump 81 and a second oil pump 82; the input end of the first reversing valve 21 and the input end of the second reversing valve 22 are respectively connected to the first oil pump 81, the input end of the sixth reversing valve 26 and the input end of the third reversing valve 23 are respectively connected to the second oil pump 82; the first reversing valve The output end of the first reversing valve 21 and the output end of the sixth reversing valve 26 are respectively connected to the input end of the working cylinder 1, the output end of the second reversing valve 22 is connected to the low-pressure end of the first boosting mechanism through the first hydraulically controlled one-way valve 24, and the output end of the third reversing valve 23 is connected to the low-pressure end of the second boosting mechanism through the second hydraulically controlled one-way valve 25; a third one-way valve 73 is arranged between the first reversing valve 21 and the input end of the working cylinder 1, and the third one-way valve 73 is used to prevent the oil in the working cylinder 1 from flowing back to the first reversing valve 21.

[0039] For further information, see Figure 2 The second reversing mechanism includes a fourth reversing valve 51 and a fifth reversing valve 52, the input end of the fourth reversing valve 51 is used to connect to the first oil pump 81, and the input end of the fifth reversing valve 52 is used to connect to the second oil pump 82; the output end of the fourth reversing valve 51 is connected to the high-pressure input end of the first boosting mechanism, and the output end of the fifth reversing valve 52 is connected to the high-pressure input end of the second boosting mechanism; the fourth check valve 74 is arranged between the fourth reversing valve 51 and the high-pressure input end of the first boosting mechanism, and the fifth check valve 75 is arranged between the fifth reversing valve 52 and the high-pressure input end of the second boosting mechanism.

[0040] For further information, see Figure 2 The working cylinder 1 is also connected to a third hydraulically controlled one-way valve 11 and a supporting function valve group 12; the first reversing valve 21 and the sixth reversing valve 26 are connected to the rod chamber of the working cylinder 1 through the supporting function valve group 12, and the third hydraulically controlled one-way valve 11 is electrically connected to the control device.

[0041] See also Figure 1 , the continuous pressurization method comprises the steps of:

[0042] 101. Obtain the real-time pressure information of the working cylinder 1 fed back by the monitoring mechanism, and determine whether the real-time pressure information meets the preset low-pressure working pressure;

[0043] In this embodiment, the low-pressure working pressure is 25MPa, that is, when the real-time pressure information of the working cylinder 1 is less than 25MPa, the preset low-pressure working pressure is not met; when the real-time pressure information of the working cylinder 1 is greater than or equal to 25MPa, the preset low-pressure working pressure is met.

[0044] 102. If the conditions are met, the first boosting mechanism is controlled to start working, and the working state of the first reversing mechanism is controlled and adjusted to deliver oil to the low-pressure end of the first boosting mechanism;

[0045] Specifically, if the preset low-pressure working pressure is met, the first reversing valve 21 and the sixth reversing valve 26 are first controlled to reset, and then the first boosting mechanism is controlled to start working. Specifically, multiple first boosting cylinders 31 are controlled to start working, and multiple first displacement sensors 32 are controlled to start acquiring real-time displacement stroke information; the control device simultaneously controls the reversal of the second reversing valve 22 to deliver oil to the low-pressure end of the first boosting mechanism, and adjusts the working state of the first hydraulically controlled one-way valve 24 according to the preset boosting pressure and the preset boosting flow rate; the high-pressure output end of the first boosting mechanism delivers oil to the working cylinder 1. Due to the isolation effect of the first one-way valve 71 and the second one-way valve 72, the oil output by the first boosting mechanism will not enter the high-pressure end of the second boosting mechanism.

[0046] In this embodiment, the preset boost pressure can be pre-defined by the designer according to the working pressure of the boost cylinder and the boost ratio, and the preset boost flow rate can be any value between 20% and 100%.

[0047] If the preset low-pressure working pressure is not met, the oil is directly delivered to the working cylinder 1 through the first reversing valve 21 and the sixth reversing valve 26. Due to the single-phase conduction effect of the third one-way valve 73, the oil in the working cylinder 1 is effectively prevented from flowing back to the first reversing valve 21 and the sixth reversing valve 26, thereby ensuring the unidirectional flow of the oil, thereby improving the stability and control accuracy of the system; in addition, avoiding oil reflux can also help reduce energy loss and improve the working efficiency of the entire boosting system.

[0048] 103. When the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward buffering condition, the working state of the first reversing mechanism is controlled and adjusted to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism;

[0049] Specifically, when the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward buffer condition, the third reversing valve 23 is controlled to be switched, and the working state of the second hydraulically controlled one-way valve 25 is adjusted according to the preset boosting pressure and the preset boosting flow rate, so as to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism;

[0050] When the real-time pressure value of the second boosting mechanism fed back by the monitoring mechanism is the same as the real-time pressure value of the first boosting mechanism, calculating the first adjustment flow rate and the second adjustment flow rate;

[0051] The working state of the first hydraulically controlled one-way valve 24 is adjusted according to the calculated first adjustment flow rate, and the working state of the second hydraulically controlled one-way valve 25 is adjusted according to the calculated second adjustment flow rate.

[0052] In this embodiment, satisfying the preset first forward buffer condition means that: when the real-time stroke displacement of all first boosting cylinders 31 included in the first boosting mechanism is ≥ the preset first buffer displacement, the first buffer displacement can be pre-set by the staff according to the design parameters and usage scenarios of the first boosting cylinder 31.

[0053] In this embodiment, the calculation formula of the first adjusted flow rate is:

[0054] Among them, YPSC1 is the first adjustment flow, YPSB is the preset boost ejection flow, LSA1.3+LSA2.3+…+LSAN.3 is the sum of the front limit positions of each boost cylinder included in the first boost mechanism, LSA1+LSA2+…+LSAN is the sum of the current positions of each boost cylinder included in the first boost mechanism, LSA1.2+LSA2.2+…+LSAN.2 is the sum of the pressure balance positions of each boost cylinder included in the first boost mechanism; the front limit position and the pressure balance position can be obtained from the design parameters of the first boost cylinder 31, and the current position can be obtained from the first displacement sensor 32 connected to the first boost cylinder 31.

[0055] In this embodiment, the calculation formula of the second adjusted flow rate is:

[0056] Among them, YPSD1 is the second adjustment flow, LS1VMAX is the moving speed of the working cylinder 1 when the given flow of the first boosting mechanism is 100%; LS1V1 is the moving speed of the working cylinder 1 when the first boosting mechanism is boosted alone; LS1V is the current speed of the working cylinder 1, K1 is the integral constant, which can be 150%-180%; K2 is the differential constant, which can be 30%-60%; the LS1VMAX and LS1V1 can be obtained from the design parameters of the working cylinder 1 and the design parameters of the first boosting cylinder 31, and the current speed can be obtained through the third displacement sensor connected to the working cylinder 1.

[0057] In this embodiment, by calculating the first adjustment flow and the second adjustment flow, the working state of the first hydraulically controlled one-way valve 24 and the second hydraulically controlled one-way valve 25 can be accurately adjusted, thereby optimizing the working performance of the continuous boosting system; specifically, the calculation of the first adjustment flow takes into account the front limit position, current position and pressure balance position of each boosting cylinder in the first boosting mechanism, and these parameters combined with the preset boosting ejection flow can ensure that the first hydraulically controlled one-way valve 24 is appropriately adjusted when specific forward buffer conditions are met; similarly, the calculation of the second adjustment flow involves the moving speed of the working cylinder 1 under different working conditions, as well as the integral constant and the differential constant, and these parameters act together on the second hydraulically controlled one-way valve 25 to achieve fine control of the speed of the working cylinder 1; through the aforementioned adjustment method, it can be ensured that the continuous boosting system can maintain optimal performance under various working conditions, thereby improving work efficiency and safety.

[0058] 104. When the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward limit condition, the working states of the first reversing mechanism and the second reversing mechanism are controlled and adjusted to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the low-pressure end of the second boosting mechanism;

[0059] Specifically, when the real-time stroke displacement information of the first boost mechanism fed back by the first detection unit meets the preset first forward limit condition, the working state of the first boost mechanism is adjusted according to the preset return pressure and the preset return flow rate to simultaneously deliver oil to the high-pressure input end of the first boost mechanism and the low-pressure end of the second boost mechanism.

[0060] In this embodiment, satisfying the preset first forward limit condition means that: when the real-time stroke displacement of all first boosting cylinders 31 included in the first boosting mechanism is ≥ the preset first limit displacement, the first limit displacement can be pre-set by the staff according to the design parameters and usage scenarios of the first boosting cylinder 31.

[0061] In this embodiment, the preset boost pressure can be pre-defined by the designer according to the return output pressure of the boost cylinder, and the preset boost flow rate can be any value between 20% and 100%.

[0062] In this embodiment, oil is transported to the high-pressure input end of the first boosting mechanism through the fourth reversing valve 51 and the fourth one-way valve 74, so that the first boosting mechanism performs an oil replenishment return stroke; the fourth one-way valve 74 allows oil to flow from the oil pump 8 to the high-pressure input end of the first boosting mechanism, but prevents reverse flow, thereby achieving isolation of the high-pressure oil circuit and the low-pressure oil circuit. By preventing the high-pressure oil in the high-pressure oil circuit from accidentally flowing into the low-pressure oil circuit, the low-pressure components in the boosting system can be protected from damage and the normal operation of the boosting system can be ensured.

[0063] 105. When the first boosting mechanism completes the return stroke, the working state of the second reversing mechanism is controlled and adjusted, and oil is delivered to the working cylinder 1 through the second boosting mechanism;

[0064] Specifically, when the first boosting mechanism completes the return stroke, the fourth reversing valve 51 is controlled to reset. At this time, the first boosting mechanism stops delivering oil to the working cylinder 1, and only delivers oil to the working cylinder 1 through the second oil pump 82 and the second boosting mechanism.

[0065] 106. When the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward buffering condition, the working state of the first reversing mechanism is controlled and adjusted to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism;

[0066] Specifically, when the real-time stroke displacement information of the second boost mechanism fed back by the second detection unit meets the preset second forward buffer condition, the second reversing valve 22 is controlled to be switched, and the working state of the first hydraulically controlled one-way valve 24 is adjusted according to the preset boost pressure and the preset boost flow rate, so as to simultaneously deliver oil to the low-pressure end of the first boost mechanism and the low-pressure end of the second boost mechanism;

[0067] When the real-time pressure value of the first supercharging mechanism fed back by the monitoring mechanism is the same as the real-time pressure value of the second supercharging mechanism, calculating the third adjustment flow rate and the fourth adjustment flow rate;

[0068] The working state of the first hydraulically controlled one-way valve 24 is adjusted according to the calculated fourth adjustment flow rate, and the working state of the second hydraulically controlled one-way valve 25 is adjusted according to the calculated third adjustment flow rate.

[0069] In this embodiment, satisfying the preset second forward buffer condition means that: when the real-time stroke displacement of all second boosting cylinders 41 included in the second boosting mechanism is ≥ the preset second buffer displacement, the second buffer displacement can be pre-set by the staff according to the design parameters and usage scenarios of the second boosting cylinder 41.

[0070] In this embodiment, the calculation formula of the third adjusted flow rate is:

[0071] Among them, YPSC2 is the third adjustment flow, YPSB is the preset boost ejection flow, LSB1.3+LSB2.3+…+LSBN.3 is the sum of the front limit positions of each boost cylinder included in the second boost mechanism, LSB1+LSB2+…+LSBN is the sum of the current positions of each boost cylinder included in the second boost mechanism, LSB1.2+LSB2.2+…+LSBN.2 is the sum of the pressure balance positions of each boost cylinder included in the second boost mechanism; the front limit position and the pressure balance position can be obtained from the design parameters of the second boost cylinder 41, and the current position can be obtained from the second displacement sensor 42 connected to the second boost cylinder 41.

[0072] In this embodiment, the calculation formula of the fourth adjusted flow rate is:

[0073] Among them, YPSD2 is the fourth adjustment flow, LS2VMAX is the moving speed of the working cylinder 1 when the given flow of the second boosting mechanism is 100%; LS2V1 is the moving speed of the working cylinder 1 when the second boosting mechanism is boosted alone; LS2V is the current speed of the working cylinder 1, K1 is the integral constant, which can be 150%-180%; K2 is the differential constant, which can be 30%-60%; the LS2VMAX and LS2V1 can be obtained from the design parameters of the working cylinder 1 and the design parameters of the second boosting cylinder 41, and the current speed can be obtained through the third displacement sensor connected to the working cylinder 1.

[0074] In this embodiment, by calculating the third adjustment flow and the fourth adjustment flow, the working states of the first hydraulically controlled one-way valve 24 and the second hydraulically controlled one-way valve 25 can be accurately adjusted, thereby optimizing the working performance of the continuous boosting system; specifically, the calculation of the third adjustment flow takes into account the front limit position, current position and pressure balance position of each boosting cylinder in the second boosting mechanism, and these parameters combined with the preset boosting ejection flow can ensure that the second hydraulically controlled one-way valve 25 is appropriately adjusted when specific forward buffer conditions are met; similarly, the calculation of the fourth adjustment flow involves the moving speed of the working cylinder 1 under different working conditions, as well as the integral constant and the differential constant, and these parameters act together on the first hydraulically controlled one-way valve 24 to achieve fine control of the speed of the working cylinder 1; through the aforementioned adjustment method, it can be ensured that the continuous boosting system can maintain optimal performance under various working conditions, thereby improving work efficiency and safety.

[0075] 107. When the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward limit condition, the working states of the first reversing mechanism and the second reversing mechanism are controlled and adjusted to simultaneously deliver oil to the high-pressure input end of the second boosting mechanism and the low-pressure end of the first boosting mechanism;

[0076] Specifically, when the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward limit condition, the third reversing valve 23 is controlled to reset and the fifth reversing valve 52 is controlled to reverse, and the working state of the second boosting mechanism is adjusted according to the preset return pressure and the preset return flow rate, so as to simultaneously deliver oil to the high-pressure input end of the second boosting mechanism and the low-pressure end of the first boosting mechanism.

[0077] In this embodiment, satisfying the preset second forward limit condition means that: when the real-time stroke displacement of all second boosting cylinders 41 included in the second boosting mechanism is ≥ the preset second limit displacement, the second limit displacement can be pre-set by the staff according to the design parameters and usage scenarios of the second boosting cylinder 41.

[0078] 108. When the second boosting mechanism completes the return stroke, the working state of the second reversing mechanism is controlled and adjusted, and oil is delivered to the working cylinder 1 through the first boosting mechanism;

[0079] Specifically, when the second boosting mechanism completes the return stroke, the fifth reversing valve 52 is controlled to reset. At this time, the second boosting mechanism stops delivering oil to the working cylinder 1, and only delivers oil to the working cylinder 1 through the first oil pump 81 and the first boosting mechanism.

[0080] 109. Determine whether the real-time pressure information fed back by the monitoring mechanism meets the preset target working pressure. If not, return to execute. When the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward buffer condition, control and adjust the working state of the first reversing mechanism to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism; that is, return to execute steps 103 to 108.

[0081] In this embodiment, the preset target working pressure is preset by the staff according to the working requirements of the continuous boosting system.

[0082] 110. If the conditions are met, control and adjust the working states of the first reversing mechanism and the second reversing mechanism to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the high-pressure input end of the second boosting mechanism;

[0083] Specifically, if the conditions are met, the second reversing valve 22 and the third reversing valve 23 are controlled to be reset, and the fourth reversing valve 51 and the fifth reversing valve 52 are controlled to be switched, so as to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the high-pressure input end of the second boosting mechanism;

[0084] When the first boosting mechanism and the second boosting mechanism complete the return stroke, the fourth reversing valve 51 and the fifth reversing valve 52 are controlled to reset;

[0085] The first reversing valve 21 and the sixth reversing valve 26 are controlled to switch, and the third hydraulically controlled one-way valve 11 is controlled to open, so as to realize the unloading and return stroke of the working cylinder 1 and complete a continuous pressurization working cycle.

[0086] Furthermore, in the process of executing steps 103 to 108, the real-time pressure information fed back by the second pressure sensor 62 and the third pressure sensor 63 is continuously monitored to confirm whether there are any abnormalities in the real-time pressure information of the high-pressure output end of the first boosting mechanism and the real-time pressure information of the high-pressure output end of the second boosting mechanism. If there are abnormal fluctuations, an alarm message is generated to prompt the staff that the boosting mechanism has abnormal pressure output problems, so as to realize timely repair and maintenance of the boosting mechanism and improve the stability and safety of the boosting system during operation.

[0087] The continuous boosting method disclosed in the present application adjusts the working states of the first reversing mechanism and the second reversing mechanism according to the real-time stroke displacement information fed back by the first detection unit and the real-time stroke displacement information fed back by the second detection unit, so as to realize the simultaneous supply of oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism, or the simultaneous supply of oil to the low-pressure end of the first boosting mechanism and the high-pressure input end of the second boosting mechanism, or the simultaneous supply of oil to the low-pressure end of the second boosting mechanism and the high-pressure input end of the first boosting mechanism, until the real-time pressure of the working cylinder 1 meets the preset target working pressure, thereby achieving the purpose of continuous multiple boosting, and has the advantages of reliable and stable boosting process and high boosting efficiency.

[0088] The present invention also provides a continuous pressurization system accordingly, wherein the continuous pressurization system adopts any of the continuous pressurization methods described above to achieve work control, and the continuous pressurization system is the continuous pressurization system mentioned in the continuous pressurization method in the above embodiment.

[0089] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A continuous pressurization method, characterized in that: The continuous boosting system comprises: a working oil cylinder, a control device, and a first reversing mechanism, a first boosting mechanism, a second boosting mechanism, a second reversing mechanism and a monitoring mechanism electrically connected to the control device respectively, wherein the first reversing mechanism is used to deliver oil to the working oil cylinder, the low-pressure end of the first boosting mechanism or the low-pressure end of the second boosting mechanism, and output the oil to the working oil cylinder through the high-pressure output end of the first boosting mechanism and the high-pressure output end of the second boosting mechanism, and the second reversing mechanism is used to deliver oil to the high-pressure input end of the first boosting mechanism or the high-pressure input end of the second boosting mechanism; the monitoring mechanism is used to obtain real-time pressure information of the working oil cylinder, the first boosting mechanism and the second boosting mechanism; the first boosting mechanism comprises a first detection unit for obtaining real-time stroke displacement information, the second boosting mechanism comprises a second detection unit for obtaining real-time stroke displacement information, and the first detection unit and the second detection unit are electrically connected to the control device respectively; the continuous boosting method comprises the steps of: Obtain the real-time pressure information of the working cylinder fed back by the monitoring mechanism, and determine whether the real-time pressure information meets the preset low-pressure working pressure; If the conditions are met, the first boosting mechanism is controlled to start working, and the working state of the first reversing mechanism is controlled and adjusted to deliver oil to the low-pressure end of the first boosting mechanism; When the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward buffering condition, the working state of the first reversing mechanism is controlled and adjusted to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism; When the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward limit condition, the working states of the first reversing mechanism and the second reversing mechanism are controlled and adjusted to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the low-pressure end of the second boosting mechanism; When the first boosting mechanism completes the return stroke, the working state of the second reversing mechanism is controlled and adjusted, and oil is delivered to the working cylinder through the second boosting mechanism; When the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward buffering condition, the working state of the first reversing mechanism is controlled and adjusted to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism; When the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward limit condition, the working states of the first reversing mechanism and the second reversing mechanism are controlled and adjusted to simultaneously deliver oil to the high-pressure input end of the second boosting mechanism and the low-pressure end of the first boosting mechanism; When the second boosting mechanism completes the return stroke, the working state of the second reversing mechanism is controlled and adjusted, and oil is delivered to the working cylinder through the first boosting mechanism; Determine whether the real-time pressure information fed back by the monitoring mechanism meets the preset target working pressure. If not, return to execute. When the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward buffer condition, control and adjust the working state of the first reversing mechanism to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism; If the conditions are met, controlling and adjusting the working states of the first reversing mechanism and the second reversing mechanism to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the high-pressure input end of the second boosting mechanism; The first reversing mechanism comprises a first reversing valve, a second reversing valve, a third reversing valve, a sixth reversing valve, a first hydraulically controlled one-way valve and a second hydraulically controlled one-way valve electrically connected to the control device respectively; the pressure source comprises a first oil pump and a second oil pump; the first reversing valve and the sixth reversing valve are used to deliver the oil outputted by the first oil pump and the second oil pump to the working oil cylinder, the first hydraulically controlled one-way valve and the second reversing valve are used to deliver the oil to the low-pressure end of the first boosting mechanism, and the second hydraulically controlled one-way valve and the third reversing valve are used to deliver the oil to the low-pressure end of the second boosting mechanism; the second reversing mechanism comprises a fourth reversing valve and a fifth reversing valve, the fourth reversing valve is used to deliver the oil outputted by the first oil pump to the high-pressure input end of the first boosting mechanism, and the fifth reversing valve is used to deliver the oil outputted by the second oil pump to the high-pressure input end of the second boosting mechanism; if the above conditions are met, the first boosting mechanism is controlled to start working, and the working state of the first reversing mechanism is controlled and adjusted to deliver oil to the low-pressure end of the first boosting mechanism, including: If the conditions are met, the first reversing valve and the sixth reversing valve are first controlled to reset, and then the first boosting mechanism is controlled to start working, and then the second reversing valve is controlled to switch, and the working state of the first hydraulically controlled one-way valve is adjusted according to the preset boosting pressure and the preset boosting flow rate, so as to deliver oil to the low-pressure end of the first boosting mechanism; If not, the oil output by the first oil pump and the second oil pump is delivered to the working cylinder through the first reversing valve and the sixth reversing valve respectively.

2. A continuous pressurization method according to claim 1, characterized in that: When the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward buffering condition, the working state of the first reversing mechanism is controlled and adjusted to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism, including: When the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward buffer condition, the third reversing valve is controlled to be switched, and the working state of the second hydraulically controlled one-way valve is adjusted according to the preset boosting pressure and the preset boosting flow rate, so as to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism; When the real-time pressure value of the second boosting mechanism fed back by the monitoring mechanism is the same as the real-time pressure value of the first boosting mechanism, calculating the first adjustment flow rate and the second adjustment flow rate; The working state of the first hydraulically controlled one-way valve is adjusted according to the calculated first adjustment flow rate, and the working state of the second hydraulically controlled one-way valve is adjusted according to the calculated second adjustment flow rate.

3. A continuous pressurization method according to claim 1, characterized in that: When the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward limit condition, the working states of the first reversing mechanism and the second reversing mechanism are controlled and adjusted to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the low-pressure end of the second boosting mechanism, including: When the real-time stroke displacement information of the first boosting mechanism fed back by the first detection unit meets the preset first forward limit condition, the second reversing valve is controlled to reset and the fourth reversing valve is controlled to reverse, and the working state of the first boosting mechanism is adjusted according to the preset return pressure and the preset return flow, so as to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the low-pressure end of the second boosting mechanism.

4. A continuous pressurization method according to claim 1, characterized in that: When the first boosting mechanism completes the return stroke, the working state of the second reversing mechanism is controlled and adjusted, and oil is delivered to the working cylinder through the second boosting mechanism, including: When the first boosting mechanism completes the return stroke, the fourth reversing valve is controlled to reset, and oil is delivered to the working cylinder through the second boosting mechanism.

5. A continuous pressurization method according to claim 1, characterized in that: When the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward buffering condition, the working state of the first reversing mechanism is controlled and adjusted to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism, including: When the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward buffer condition, the second reversing valve is controlled to be switched, and the working state of the first hydraulically controlled one-way valve is adjusted according to the preset boosting pressure and the preset boosting flow rate, so as to simultaneously deliver oil to the low-pressure end of the first boosting mechanism and the low-pressure end of the second boosting mechanism; When the real-time pressure value of the first supercharging mechanism fed back by the monitoring mechanism is the same as the real-time pressure value of the second supercharging mechanism, calculating the third adjustment flow rate and the fourth adjustment flow rate; The working state of the first hydraulically controlled one-way valve is adjusted according to the calculated fourth adjustment flow rate, and the working state of the second hydraulically controlled one-way valve is adjusted according to the calculated third adjustment flow rate.

6. A continuous pressurization method according to claim 1, characterized in that: When the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward limit condition, the working states of the first reversing mechanism and the second reversing mechanism are controlled and adjusted to simultaneously deliver oil to the high-pressure input end of the second boosting mechanism and the low-pressure end of the first boosting mechanism, including: When the real-time stroke displacement information of the second boosting mechanism fed back by the second detection unit meets the preset second forward limit condition, the third reversing valve is controlled to reset and the fifth reversing valve is controlled to reverse, and the working state of the second boosting mechanism is adjusted according to the preset return pressure and the preset return flow, so as to simultaneously deliver oil to the high-pressure input end of the second boosting mechanism and the low-pressure end of the first boosting mechanism.

7. A continuous pressurization method according to claim 1, characterized in that: When the second boosting mechanism completes the return stroke, the working state of the second reversing mechanism is controlled and adjusted, and oil is delivered to the working cylinder through the first boosting mechanism, including: When the second boosting mechanism completes the return stroke, the fifth reversing valve is controlled to reset, and oil is delivered to the working cylinder through the first boosting mechanism.

8. A continuous pressurization method according to claim 1, characterized in that: The working oil cylinder is also connected to a third hydraulically controlled one-way valve, which, if satisfied, controls and adjusts the working states of the first reversing mechanism and the second reversing mechanism to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the high-pressure input end of the second boosting mechanism, including: If the conditions are met, the second reversing valve and the third reversing valve are controlled to be reset, and the fourth reversing valve and the fifth reversing valve are controlled to be switched, so as to simultaneously deliver oil to the high-pressure input end of the first boosting mechanism and the high-pressure input end of the second boosting mechanism; When the first boosting mechanism and the second boosting mechanism complete the return stroke, the fourth reversing valve and the fifth reversing valve are controlled to reset; The first reversing valve and the sixth reversing valve are controlled to switch, and the third hydraulically controlled one-way valve is controlled to open, so as to realize the unloading and return stroke of the working cylinder.

9. A continuous pressurization system, characterized in that: The continuous pressurization system adopts the continuous pressurization method described in any one of claims 1-8 to achieve working control.

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