An oil pressure regulating system and method for supplying multiple branch oil pipes with a single oil source

Abstract

The present invention belongs to the technical field of oil supply systems and discloses an oil pressure regulating system and method for supplying multiple branch oil pipes with a single oil source. The system can adjust the flow rate of the first oil outlet pipe according to the pressure change of the first oil outlet pipe, solving the problem in the prior art that the oil pressure of the oil source pipe decreases, resulting in a decrease in the oil pressure of each branch oil outlet pipe. The system specifically includes a first oil outlet pipe and a second oil outlet pipe, one end of which is connected to the oil source pipe orifice; the first oil outlet pipe includes a first oil pipe branch and a second oil pipe branch in parallel, one end of which is connected to the oil source pipe orifice; and an electromagnetic reversing valve and a two-way cartridge valve on the second oil pipe branch. The system provided by the present invention compensates for the oil pressure of the second oil outlet pipe by losing the oil pressure of the first oil outlet pipe, thereby ensuring the stability of the oil pressure of the second oil outlet pipe. The method provided by the present invention is suitable for use when the oil source pressure is reduced or unstable, thereby ensuring stable oil supply from the second oil outlet pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of oil supply systems, and in particular to an oil pressure regulating system and method for supplying multi-branch oil pipes with a single oil source. Background Art

[0002] In actual production, the oil supply system is usually composed of an oil source pipe and several oil outlet pipe branches. One end of the several oil outlet pipe branches is connected to the pipe mouth of the oil source pipe. A valve is installed on each oil outlet pipe branch to control the on and off of the corresponding oil outlet pipe branch. Figure 1 However, this oil supply system is only suitable for supplying oil when the oil pressure in the oil source pipe is normal. When the oil pressure in the oil source pipe is low, the oil pressure of each oil outlet pipe branch will decrease.

[0003] In actual process requirements, one of several oil outlet branch lines is often more important. To ensure continuous production, the oil pressure in this branch line must remain high and stable, so this branch line needs to maintain pressure more than other branches. However, in existing oil supply systems, when the oil pressure in the oil source pipe decreases, the oil pressure in each branch line also decreases, and the stability of the oil pressure P2 in the branch line cannot be guaranteed. Therefore, a oil supply system is needed that compensates for the oil pressure of a certain branch line by sacrificing other branches, thereby ensuring the stability of the oil pressure in that branch line. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides an oil pressure regulation system and method for supplying multiple branch oil pipes with a single oil source. The system can adjust the flow rate of the first oil outlet pipe according to the pressure change of the first oil outlet pipe, compensate the oil pressure of the second oil outlet pipe by losing the oil pressure of the first oil outlet pipe, and ensure the stability of the oil pressure of the second oil outlet pipe, so as to solve the problem in the existing technology that the oil pressure of each branch oil outlet pipe is reduced due to the reduction of the oil pressure of the oil source pipe.

[0005] In order to achieve the above-mentioned object of the invention, in the first aspect, the technical solution adopted by the present invention is:

[0006] An oil pressure regulating system for a single oil source supplying multiple branch oil pipes comprises a first oil outlet pipe and a second oil outlet pipe, one end of the first oil outlet pipe and the second oil outlet pipe being connected to an oil source pipe orifice; the first oil outlet pipe comprises a first oil pipe branch and a second oil pipe branch connected in parallel, one end of the first oil pipe branch and the second oil pipe branch being connected to an oil source pipe orifice; a first oil pipe branch valve is provided on the first oil pipe branch; an electromagnetic reversing valve and a two-way cartridge valve are provided on the second oil pipe branch; the second oil pipe branch is connected to the oil source pipe orifice and is divided into two branches, one of which is connected to a The P pressure oil port of the solenoid reversing valve is connected to the B working port of the two-way cartridge valve through another flow pipeline; the A working port of the solenoid reversing valve and the C control port of the two-way cartridge valve are connected by a control pipeline; the second oil pipe branch is connected from the A working port of the solenoid reversing valve and merges with the first oil pipe branch; the first oil pipe branch is equipped with a pressure detection device, which is used to detect the oil pipe pressure of the first oil outlet pipe and send it to the DCS central control. The DCS central control is used to control the on and off of the solenoid reversing valve according to the oil pipe pressure.

[0007] In this solution, an electromagnetic reversing valve and a two-way cartridge valve are provided on the first oil outlet pipe. When the oil pressure in the oil source pipe is normal, the two-way cartridge valve of the second oil pipe branch opens, and the oil source flows normally through the second oil pipe branch. When the oil pressure detected by the pressure detection device is lower than the normal value, the DCS controls the passage of the electromagnetic reversing valve, and the oil source flows through the control pipe and is injected into the C control chamber of the two-way cartridge valve, so that the two-way cartridge valve is disconnected, thereby disconnecting the first oil outlet pipe. In this solution, the oil pressure of the first oil outlet pipe can be adjusted to ensure the stability of the oil pressure of the second oil outlet pipe, so that the second oil outlet pipe can supply oil normally and is not affected by the change of the oil pressure in the oil source pipe.

[0008] Furthermore, the T oil return port of the electromagnetic reversing valve is connected to one end of the oil drain pipe, and the other end of the oil drain pipe is connected back to the box.

[0009] In this solution, when the oil pressure is normal, the oil source flows into the two-way cartridge valve through the circulation pipeline, the oil source inside the C control chamber of the two-way cartridge valve is discharged, enters the solenoid reversing valve through the control pipeline, and then flows out from the T return oil port of the solenoid reversing valve and flows back into the box through the drain pipe; the drain pipe is set to collect the oil source inside the C control chamber of the two-way cartridge valve and the control pipeline.

[0010] Furthermore, a No. 1 valve is provided on the second oil pipe branch between the oil source pipe outlet and the B working port of the two-way cartridge valve; a No. 2 valve is provided on the second oil pipe branch near the connection point between the first oil pipe branch and the second oil pipe branch.

[0011] In this solution, when the oil source pressure is normal and does not need to be adjusted, valve No. 1 and valve No. 2 can be closed. At this time, the oil pressure in the first oil outlet pipe and the oil pressure in the second oil outlet pipe of the system are the same, which is equivalent to the oil supply system in the prior art and is suitable for use when the oil source is stable and does not need to be adjusted.

[0012] Furthermore, a second oil outlet pipe valve is provided on the second oil outlet pipe.

[0013] In this solution, the second oil outlet pipe valve can control the on-off of the second oil outlet pipe.

[0014] Furthermore, the pressure detection device is provided on the first oil outlet pipe.

[0015] In this solution, the pressure detection device is arranged at the end of the pipe outlet of the first oil outlet pipe. The detected oil pressure is closer to the outlet oil pressure of the first oil outlet pipe. The flow rate of the first oil outlet pipe is feedback-adjusted according to the outlet oil pressure of the first oil outlet pipe, which can avoid inaccurate adjustment results caused by oil pressure loss inside the first oil outlet pipe.

[0016] Furthermore, an oil source pressure detection device is provided on the oil source pipe.

[0017] In this solution, the oil source pressure detection device can detect the oil pressure of the oil source pipe. By comparing the pressure detected by the pressure detection device, the oil pressure loss in the first oil outlet pipe can be obtained.

[0018] Furthermore, the pressure detection device is connected to the pipeline through a joint and a hose.

[0019] In a second aspect, the present invention provides an oil pressure regulation method for an oil pressure regulation system for supplying multiple branch oil pipes from a single oil source, based on the first aspect, for regulating the oil pressure in the oil source pipe when the oil pressure is stable, comprising the following steps:

[0020] S1: Close the first oil pipe branch valve, and the oil source enters the B working port of the two-way cartridge valve along the circulation pipeline, and then flows out from the A working port of the two-way cartridge valve to supply oil to the first oil outlet pipe;

[0021] S2: Open the valve of the second oil outlet pipe, and the oil source flows along the second oil outlet pipe to supply oil to the second oil outlet pipe.

[0022] In this solution, the first oil pipe branch valve is closed, the first oil pipe branch is disconnected, and the second oil pipe branch flows normally. When the oil source pipe pressure is stable, the oil pressures of the first oil outlet pipe and the second oil outlet pipe are equal, and the first oil outlet pipe and the second oil outlet pipe supply oil normally.

[0023] In a third aspect, the present invention provides an oil pressure regulating method based on the oil pressure regulating system for supplying multiple branch oil pipes from a single oil source provided in the first aspect, which is used to regulate the oil pressure when the oil source pipe oil pressure decreases, comprising the following steps:

[0024] T1: Close the first oil pipe branch valve, open valves 1 and 2, and the oil source flows into the B working port of the two-way cartridge valve along the circulation pipeline and flows out from the A working port of the two-way cartridge valve, realizing the oil supply to the first oil outlet pipe;

[0025] T2: The pressure detection device detects the oil pressure of the first oil outlet pipe and sends it to the DCS central control system; if the DCS central control system determines that the oil pressure is lower than the normal oil pressure, the solenoid reversing valve is energized;

[0026] T3: After the solenoid reversing valve is energized, the oil source flows through the solenoid reversing valve, through the control pipeline and into the C control chamber of the two-way cartridge valve, and the two-way cartridge valve is closed; the first oil outlet pipe is closed;

[0027] T4: Open the second oil outlet pipe valve, and all the oil in the oil source pipe is supplied to the second oil outlet pipe.

[0028] In this solution, the first oil pipe branch valve is closed. When the oil pressure in the oil source pipe decreases, the oil pressure in the first oil outlet pipe also decreases. Adjustment is made based on the oil pressure in the first oil outlet pipe to ensure the oil pressure in the second oil outlet pipe is stable. This solution can maintain the pressure in the second oil outlet pipe even when the pressure in the oil source pipe decreases, without affecting the normal oil supply to the second oil outlet pipe.

[0029] Furthermore, T3 includes the following steps:

[0030] T301: The oil source flows in from the P pressure oil port of the solenoid reversing valve and flows out from the A working port of the solenoid reversing valve;

[0031] T302: flows into the C control port of the two-way cartridge valve through the control line, filling the C control chamber of the two-way cartridge valve;

[0032] T303: After the C control chamber is filled, press the valve core downward, and the passage between the B working port and the A working port of the two-way cartridge valve is closed; the first oil outlet pipe is closed.

[0033] The beneficial effects of the present invention are:

[0034] In the present invention, the on-off of the electromagnetic reversing valve is controlled according to the oil pressure of the first oil outlet pipe. The oil source behind the electromagnetic reversing valve is injected into the C control chamber of the two-way cartridge valve, so that the B working port and the A working port of the two-way reversing valve are disconnected, thereby blocking the second oil pipe branch. In the present invention, the oil flow of the second oil outlet pipe is compensated by the loss of the oil flow of the first oil outlet pipe, thereby ensuring the stable oil supply of the second oil outlet pipe and enabling the second oil outlet pipe to perform normal oil supply work even when the oil source pressure is reduced.

[0035] The system provided by the present invention is provided with a first oil pipe branch valve 、 Valve No. 1 and valve No. 2 close the first oil pipe branch valve or close valve No. 1 and valve No. 2 at the same time, then the first oil outlet pipe and the second oil outlet pipe are both connected, which is equivalent to the oil supply system in the prior art and is suitable for oil supply conditions with stable oil source pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1It is a structural diagram of the oil supply system in the prior art;

[0037] Figure 2 This is a structural diagram of an oil pressure regulating system that supplies multiple branch oil pipes with a single oil source.

[0038] Among them: 1. First oil outlet pipe; 11. First oil outlet pipe branch; 111. First oil outlet pipe branch valve; 12. Second oil outlet pipe branch; 121. Valve No. 1; 122. Solenoid reversing valve; 123. Two-way cartridge valve; 124. Valve No. 2; 13. Pressure detection device; 2. Second oil outlet pipe; 21. Second oil outlet pipe valve; 3. Oil source pipe; 4. Control pipeline; 5. Circulation pipeline; 6. Oil drain pipe. DETAILED DESCRIPTION

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Specific embodiments of the invention are described below to facilitate understanding of the invention by those skilled in the art. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of the invention as defined and determined by the appended claims, these changes are obvious, and all inventions and creations utilizing the concepts of the present invention are protected.

[0040] Example 1

[0041] like Figure 2 As shown, this embodiment provides an oil pressure regulating system for supplying multiple branch oil pipes with a single oil source. This system can compensate for the oil pressure of the second oil outlet pipe 2 by losing the oil pressure of the first oil outlet pipe 1, thereby ensuring the stability of the oil pressure in the second oil outlet pipe 2. This can solve the problem in the prior art that when a single oil source pipe 3 supplies oil to multiple branch oil pipes, the oil source pressure drops, resulting in a drop in the oil pressure of each branch oil outlet pipe.

[0042] It specifically includes: a first oil outlet pipe 1 and a second oil outlet pipe 2, one end of which is connected to the outlet of the oil source pipe 3, and the oil source can flow into the first oil outlet pipe 1 and the second oil outlet pipe 2 from the oil source pipe 3 in two ways. In actual operation, the oil source pipe 3 can also be divided into several ways according to the oil supply demand; the first oil outlet pipe 1 includes a first oil pipe branch 11 and a second oil pipe branch 12 connected in parallel, and one end of the first oil pipe branch 11 and the second oil pipe branch 12 is connected to the outlet of the oil source pipe 3;

[0043] The first oil pipe branch 11 is provided with a first oil pipe branch valve 111 for opening and closing the first oil pipe branch 11; the second oil pipe branch 12 is provided with an electromagnetic reversing valve 122 and a two-way cartridge valve 123; the second oil pipe branch 12 is connected from the oil source pipe 3 and is divided into two paths, one of which is connected to the P pressure oil port of the electromagnetic reversing valve 122, and the other is connected to the B working port of the two-way cartridge valve 123 through the circulation pipe 5, and then connected to the A control port of the two-way cartridge valve 123; the A working port of the electromagnetic reversing valve 122 and The C control ports of the two-way cartridge valve 123 are connected via a control line 4, and the oil source enters the C control chamber through the C control port in the control line 4; the second oil pipe branch 12 is connected to the A working port of the electromagnetic reversing valve 122 and merges with the first oil pipe branch 11; the first oil pipe branch 11 is provided with a pressure detection device 13, which is used to detect the oil pipe pressure of the first oil outlet pipe 1 and send it to the DCS central control. The DCS central control is used to control the on and off of the electromagnetic reversing valve 122 according to the oil pipe pressure.

[0044] The oil return port T of solenoid reversing valve 122 is connected to one end of an oil drain pipe 6, the other end of which is connected back to the tank. When the oil pressure is normal, oil flows into two-way cartridge valve 123 through circulation pipe 5. The oil inside the C control chamber of two-way cartridge valve 123 is then discharged, enters the solenoid reversing valve 122 through the control pipe, and then flows out of the oil return port T of solenoid reversing valve 122 and back into the tank through the oil drain pipe 6. The oil drain pipe collects the oil inside the C control chamber of two-way cartridge valve 123 and the control pipe 4.

[0045] The second oil branch line 12 is also equipped with a valve No. 121 and a valve No. 2 124. Valve No. 121 is installed on the second oil branch line 12 between the outlet of the oil source line 3 and the working port B of the two-way cartridge valve 123. Valve No. 2 124 is installed on the second oil branch line 12 near the connection between the first and second oil branches 11, 12. When the oil source pressure is normal and does not require adjustment, valves No. 121 and No. 2 124 can be closed. At this point, the oil pressure in the first and second oil outlet lines 1, 2 of this system is the same, equivalent to the oil supply system in the prior art, and suitable for use when the oil source is stable and does not require adjustment.

[0046] The second oil outlet pipe 2 is provided with a second oil outlet pipe valve 21 , which can control the on / off of the second oil outlet pipe 2 .

[0047] Pressure detection device 13 is installed on first oil outlet pipe 1, where first oil branch pipe 11 and second oil branch pipe 12 merge. Pressure detection device 13 is located at the end of the outlet of first oil outlet pipe 1. The detected oil pressure is closer to the outlet oil pressure of first oil outlet pipe 1. Feedback adjustment of the flow rate of first oil outlet pipe 1 based on the outlet oil pressure of first oil outlet pipe 1 can avoid inaccurate adjustment results caused by oil pressure loss within the outlet of first oil outlet pipe 1.

[0048] The oil source pipe 3 is provided with an oil source pressure detection device, which can detect the oil pressure of the oil source pipe 3. By comparing it with the pressure detection device 13, the oil pressure loss in the first oil outlet pipe 1 can be obtained.

[0049] The pressure detection device 13 is connected to the pipeline through a joint and a hose.

[0050] The working principle of this embodiment is as follows:

[0051] Open the first oil pipe branch valve 111, and close valves 121 and 124. The oil source can be supplied through the first oil pipe branch 11 of the first oil outlet pipe 1 or through the second oil outlet pipe 2. Both the first oil outlet pipe 1 and the second oil outlet pipe 2 are in a flow state.

[0052] Close the first oil pipe branch valve 111 and open valve No. 1 121 and valve No. 2 124 . When the oil source pressure is stable, the oil source enters the B working port of the two-way cartridge valve 123 along the circulation pipeline 5, and then flows out from the A working port of the two-way cartridge valve 123, realizing oil supply through the first oil outlet pipe 1; at this time, the first oil outlet pipe 1 and the second oil outlet pipe 2 of the system are in a flow state; when the oil source pressure decreases and the oil pressure detected by the pressure detection device 13 is lower than the normal value, the DCS controls the electromagnetic reversing valve 122 to flow into the flow state, and the oil source flows in from the P pressure oil port and out from the A working port, and is injected into the C control chamber of the two-way cartridge valve 123 through the control pipeline 4, so that the B working port and the A working port of the two-way cartridge valve 123 are disconnected, thereby disconnecting the first oil pipe branch 11, and then the oil pressure in the first oil outlet pipe 1 is reduced. At this time, more oil in the oil source pipe 3 flows into the second oil outlet pipe 2, ensuring that the oil pressure of the second oil outlet pipe 2 is stable, so that the second oil outlet pipe 2 can supply oil normally without being affected by the oil pressure change of the oil source pipe 3.

[0053] Example 2

[0054] This embodiment provides an oil pressure regulation method based on the oil pressure regulation system for supplying multiple branch oil pipes from a single oil source provided in Example 1, which is used to regulate the oil pressure in the oil source pipe 3 when the oil pressure is stable, including the following steps:

[0055] S1: Close the first oil pipe branch valve 111, and the oil source enters the B working port of the two-way cartridge valve 123 along the circulation pipeline 5, and then flows out from the A working port of the two-way cartridge valve 123 to supply oil to the first oil outlet pipe 1;

[0056] S2: Open the second oil outlet pipe valve 21 , and the oil source flows along the second oil outlet pipe 2 to supply oil to the second oil outlet pipe 2 .

[0057] In this embodiment, the first oil pipe branch valve 111 is closed, the first oil pipe branch 11 is disconnected, and the second oil pipe branch 12 flows normally. When the pressure of the oil source pipe 3 is stable, the oil pressures of the first oil outlet pipe 1 and the second oil outlet pipe 2 are equal, and the first oil outlet pipe 1 and the second oil outlet pipe 2 supply oil normally.

[0058] Example 3

[0059] This embodiment provides an oil pressure regulation method based on the oil pressure regulation system for supplying multiple branch oil pipes from a single oil source provided in Example 1, which is used to regulate the oil pressure when the oil source pipe 3 decreases, including the following steps:

[0060] T1: Close the first oil pipe branch valve 111, open valve No. 1 121 and valve No. 2 124, and the oil source flows along the circulation pipeline 5 from the B working port of the two-way cartridge valve 123 and flows out from the A working port of the two-way cartridge valve 123, thus realizing the oil supply to the first oil outlet pipe 1;

[0061] T2: The pressure detection device 13 detects the oil pressure of the first oil outlet pipe 1 and sends it to the DCS central control system. If the DCS central control system determines that the oil pressure is lower than the normal oil pressure, the solenoid reversing valve 122 is energized.

[0062] T3: After the solenoid reversing valve 122 is energized, the oil source flows in from the P pressure oil port of the solenoid reversing valve 122 and flows out from the A working port of the solenoid reversing valve 122; after flowing into the control line 4, the oil is injected into the C control chamber of the two-way cartridge valve 123 through the C control port of the two-way cartridge valve 123; after the C control chamber is filled, the valve core is pressed downward, and the passage between the B working port and the A working port of the two-way cartridge valve 123 is closed; the first oil outlet pipe 1 is closed.

[0063] T4: Open the second oil outlet pipe valve 21 , and all the oil in the oil source pipe 3 is supplied to the second oil outlet pipe 2 .

[0064] In this embodiment, the first oil pipe branch valve 111 is closed. When the oil pressure in the oil source pipe 3 decreases, the oil pressure in the first oil outlet pipe 1 also decreases. Adjustment is made based on the oil pressure in the first oil outlet pipe 1 to ensure that the oil pressure in the second oil outlet pipe 2 is stable. This solution can maintain the pressure in the second oil outlet pipe 2 even when the pressure in the oil source pipe 3 decreases, without affecting the normal oil supply to the second oil outlet pipe 2.

[0065] Those skilled in the art will appreciate that the embodiments herein are intended to help readers understand the principles of the present invention, and it should be understood that the scope of protection of the present invention is not limited to such specific descriptions and embodiments. Those skilled in the art can make various other specific variations and combinations based on the technical teachings disclosed in the present invention without departing from the essence of the present invention, and such variations and combinations are still within the scope of protection of the invention.

Claims

1. An oil pressure regulating system with a single oil source supplying multiple branch oil pipes, characterized by: The invention comprises a first oil outlet pipe (1) and a second oil outlet pipe (2), one end of each of the first oil outlet pipe (1) and the second oil outlet pipe (2) being connected to the orifice of an oil source pipe (3); the first oil outlet pipe (1) comprises a first oil pipe branch (11) and a second oil pipe branch (12) connected in parallel, one end of each of the first oil pipe branch (11) and the second oil pipe branch (12) being connected to the orifice of the oil source pipe (3); The first oil pipe branch (11) is provided with a first oil pipe branch valve (111); the second oil pipe branch (12) is provided with an electromagnetic reversing valve (122) and a two-way cartridge valve (123); the second oil pipe branch (12) is connected from the oil source pipe (3) and is divided into two paths, one path is connected to the P pressure oil port of the electromagnetic reversing valve (122), and the other path is connected to the B working port of the two-way cartridge valve (123) through the circulation pipeline (5); the A working port of the electromagnetic reversing valve (122) and the C control port of the two-way cartridge valve (123) are connected through the control pipeline (4); the second oil pipe branch (12) is connected from the A working port of the electromagnetic reversing valve (122) and is merged with the first oil pipe branch (11); The first oil pipe branch (11) is provided with a pressure detection device (13), the pressure detection device (13) is used to detect the oil pipe pressure of the first oil outlet pipe (1) and send it to the DCS central control, and the DCS central control is used to control the on and off of the electromagnetic reversing valve (122) according to the oil pipe pressure; The T oil return port of the electromagnetic reversing valve (122) is connected to one end of the oil drain pipe (6), and the other end of the oil drain pipe (6) is connected back to the box; The method for regulating the oil pressure of the oil pressure regulating system using the single oil source to supply multiple branch oil pipes is used to regulate the oil pressure when the oil pressure of the oil source pipe (3) decreases, and comprises the following steps: T1: the first oil pipe branch valve (111) is closed, and the No. 1 valve (121) and the No. 2 valve (124) are opened, so that the oil source flows along the circulation pipeline (5) from the B working port of the two-way cartridge valve (123) and flows out from the A working port of the two-way cartridge valve (123), thereby realizing the oil supply to the first oil outlet pipe (1); T2: the pressure detection device (13) detects the oil pressure of the first oil outlet pipe (1) and sends it to the DCS central control system; if the DCS central control system determines that the oil pressure is lower than the normal oil pressure, the electromagnetic reversing valve (122) is controlled to be energized; T3: After the electromagnetic reversing valve (122) is energized, the oil source flows through the electromagnetic reversing valve (122), passes through the control pipeline (4), and flows into the C control chamber of the two-way cartridge valve (123), and the two-way cartridge valve (123) is closed; the first oil outlet pipe (1) is closed; T4: Open the second oil outlet pipe valve (21), and all the oil in the oil source pipe (3) is supplied to the second oil outlet pipe (2); The T3 comprises the following steps: T301: the oil source flows in from the P pressure oil port of the electromagnetic reversing valve (122) and flows out from the A working port of the electromagnetic reversing valve (122); T302: Flowing into the C control port of the two-way cartridge valve (123) through the control line (4), filling the C control chamber of the two-way cartridge valve (123); T303: After the C control chamber is filled, the valve core is pressed downward, and the passage between the B working port and the A working port of the two-way cartridge valve (123) is closed; the first oil outlet pipe (1) is closed; When the oil source pressure is stable, the oil source enters the B working port of the two-way cartridge valve (123) along the circulation pipeline (5), and then flows out from the A working port of the two-way cartridge valve (123), thereby realizing oil supply through the first oil outlet pipe (1); at this time, the first oil outlet pipe (1) and the second oil outlet pipe (2) of the system are in a passage state; The electromagnetic reversing valve (122) is controlled to be on and off according to the oil pressure of the first oil outlet pipe (1). After the electromagnetic reversing valve (122) is opened, the oil source is injected into the C control chamber of the two-way cartridge valve (123), so that the B working port and the A working port of the two-way reversing valve (123) are disconnected, thereby blocking the second oil pipe branch (12); the oil flow of the second oil outlet pipe (2) is compensated by the loss of the oil flow of the first oil outlet pipe (1), thereby ensuring the stable oil supply of the second oil outlet pipe (2), so that the second oil outlet pipe (2) can also perform normal oil supply work when the oil source pressure is reduced.

2. The oil pressure regulating system for a single oil source supplying multiple branch oil pipes according to claim 1, characterized in that: A first valve (121) is provided on the second oil pipe branch (12) between the outlet of the oil source pipe (3) and the working port B of the two-way cartridge valve (123); and a second valve (124) is provided on the second oil pipe branch (12) near the connection point between the first oil pipe branch (11) and the second oil pipe branch (12).

3. The oil pressure regulating system for a single oil source supplying multiple branch oil pipes according to claim 1, characterized in that: A second oil outlet pipe valve (21) is provided on the second oil outlet pipe (2).

4. The oil pressure regulating system for a single oil source supplying multiple branch oil pipes according to claim 1, characterized in that: The pressure detection device (13) is provided on the first oil outlet pipe (1).

5. The oil pressure regulating system for a single oil source supplying multiple branch oil pipes according to claim 1, characterized in that: An oil source pressure detection device is provided on the oil source pipe (3).

6. The oil pressure regulating system for supplying multiple branch oil pipes from a single oil source according to any one of claims 1 to 4, characterized in that: The pressure detection device (13) is connected to the pipeline via a joint and a hose.

7. A method for regulating oil pressure using an oil pressure regulating system with a single oil source supplying multiple branch oil pipes according to any one of claims 1 to 5, characterized in that: It is used to adjust the oil pressure of the oil source pipe (3) when it is stable, and includes the following steps: S1: The first oil pipe branch valve (111) is closed, and the oil source enters the B working port of the two-way cartridge valve (123) along the circulation pipeline (5), and then flows out from the A working port of the two-way cartridge valve (123) to supply oil to the first oil outlet pipe (1); S2: Open the second oil outlet pipe valve (21), and the oil source flows along the second oil outlet pipe (2) to supply oil to the second oil outlet pipe (2).

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