A hydraulic system and method for controlling the conversion of a double-linked blowout preventer cartridge rubber core and a window

Abstract

The present invention relates to a hydraulic system and method for controlling the switching of the rubber core and window of a double blowout preventer box, belonging to the technical field of hydraulic control of double blowout preventers. The technical solution is as follows: when the ball valve for switching the rubber core and window function of blowout preventer box one or the ball valve for switching the rubber core and window function of blowout preventer box two is rotated, the function of the rubber core cylinder and the window cylinder of blowout preventer box one or blowout preventer box two can be switched. After the function switching of the rubber core cylinder or the window cylinder of blowout preventer box one or blowout preventer box two is completed, the clamping and releasing of the rubber core cylinder of blowout preventer box one or blowout preventer box two or the clamping and releasing solenoid valve of blowout preventer box two is controlled to achieve the clamping and releasing of the rubber core cylinder of blowout preventer box one or blowout preventer box two or the opening and closing of the window cylinder. In addition to meeting the basic requirements of the operation of traditional blowout preventers, the present invention can achieve rapid switching of the rubber core clamping and releasing functions and the window opening and closing functions of the double blowout preventer box through a control valve group integrated in the double blowout preventer box without plugging in or out of the control pipeline.

Description

Technical Field

[0001] The present invention relates to a hydraulic system and method for controlling the conversion of a rubber core and a window of a double blowout preventer box, belonging to the technical field of hydraulic control of double blowout preventer boxes. Background Art

[0002] The blowout preventer (BOP) is a key component of coiled tubing equipment. Its primary function is to control wellhead pressure during operation, effectively preventing blowouts and ensuring safe construction. Currently, the compression and release of the BOP, as well as the opening and closing of the sight glass, are controlled by a manual ball valve (a ball-type directional control valve). The control line from the manual ball valve is connected directly to the inlet and outlet ports of the BOP's rubber core cylinder or the BOP's sight glass cylinder via a quick connector.

[0003] A double blowout preventer consists of two sets of blowout preventers, one above the other: blowout preventer 1 and one below. Both sets have identical blowout preventer core cylinders and sight glass cylinders. Each blowout preventer's core cylinder and sight glass cylinder have four inlet and outlet ports, while the two sets have eight ports, corresponding to four operating circuits. Existing double blowout preventers rely on two manual ball valves installed in the control room to control the compression and release of the two blowout preventer core cylinders and the opening and closing of the sight glass cylinder.

[0004] When the user needs to operate the window of the blowout preventer box 1 to open or close, it is necessary to remove the two control lines at the oil inlet and outlet interfaces of the original blowout preventer box 1 rubber core cylinder, and then plug them into the oil inlet and outlet interfaces of the blowout preventer box 1 window cylinder, so as to switch the function of clamping and loosening the rubber core of the blowout preventer box 1 to opening and closing the window. Similarly, when the user needs to operate the rubber core of the blowout preventer box 1 to clamp or loosen, it is necessary to remove the two control lines at the oil inlet and outlet interfaces of the original blowout preventer box 1 window cylinder, and then plug them into the oil inlet and outlet interfaces of the blowout preventer box 1 rubber core cylinder.

[0005] When the user needs to operate the window of the second blowout preventer box to open or close, it is necessary to remove the two control lines at the oil inlet and outlet interfaces of the original blowout preventer box second rubber core cylinder, and then plug them into the oil inlet and outlet interfaces of the blowout preventer box second window cylinder, so as to switch the function of clamping and loosening the rubber core of the blowout preventer box second to opening and closing the window. Similarly, when the user needs to operate the rubber core of the second blowout preventer box to clamp or loosen, it is necessary to remove the two control lines at the oil inlet and outlet interfaces of the original blowout preventer box second window cylinder, and then plug them into the oil inlet and outlet interfaces of the blowout preventer box second rubber core cylinder.

[0006] Therefore, the switching of the rubber core clamping and loosening functions and the window opening and closing functions of the double blowout preventer box needs to be performed through the above-mentioned frequent quick-connect plug-in and pull-out operations, resulting in low work efficiency. Summary of the Invention

[0007] The purpose of the present invention is to provide a hydraulic system and method for controlling the switching of the rubber core and the window of a double blowout preventer box. In addition to meeting the basic requirements of the operation of a traditional blowout preventer box, the system can also achieve rapid switching of the rubber core clamping and loosening functions and the window opening and closing functions of the double blowout preventer box without removing the control pipeline on the blowout preventer box, thereby solving the above-mentioned problems existing in the background technology.

[0008] The technical solution of the present invention is:

[0009] A hydraulic system for controlling the switching of a double blowout preventer cartridge rubber core and a sight glass is integrated with a valve group body, wherein a first blowout preventer cartridge clamping and releasing solenoid valve, a first blowout preventer cartridge rubber core and a sight glass function switching ball valve, a second blowout preventer cartridge clamping and releasing solenoid valve, and a second blowout preventer cartridge rubber core and a sight glass function switching ball valve are integrated with a valve group body to form a control valve group;

[0010] The P1 port of the clamping and releasing solenoid valve of the blowout box is connected with the hydraulic oil, and the T1 port of the clamping and releasing solenoid valve of the blowout box is connected with the hydraulic oil tank; the A1 port of the clamping and releasing solenoid valve of the blowout box is correspondingly connected to the rod chamber of the blowout box one rubber core control cylinder and the blowout box one window control cylinder, the B1 port of the clamping and releasing solenoid valve of the blowout box is connected to the C1 port of the blowout box one rubber core and the window function conversion ball valve, the D1 port of the blowout box one rubber core and the window function conversion ball valve is connected to the rodless chamber of the blowout box one rubber core control cylinder, and the E1 port of the blowout box one rubber core and the window function conversion ball valve is connected to the rodless chamber of the blowout box one window control cylinder; the clamping and releasing solenoid valve of the blowout box one and the rubber core and the window function conversion ball valve work together to realize the clamping and releasing of the rubber core of the blowout box one and the opening and closing of the window;

[0011] The P2 port of the second clamping and releasing solenoid valve of the blowout preventer box is connected with the hydraulic oil, and the T2 port of the second clamping and releasing solenoid valve of the blowout preventer box is connected with the hydraulic oil tank; the A2 port of the second clamping and releasing solenoid valve of the blowout preventer box is correspondingly connected with the rod cavity of the second rubber core control cylinder of the blowout preventer box and the second window control cylinder of the blowout preventer box, the B2 port of the second clamping and releasing solenoid valve of the blowout preventer box is connected with the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve, the D2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve is connected with the rodless cavity of the second rubber core control cylinder of the blowout preventer box, and the E2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve is connected with the rodless cavity of the second window control cylinder of the blowout preventer box; the second clamping and releasing solenoid valve of the blowout preventer box and the second rubber core of the blowout preventer box and the window function conversion ball valve work together to realize the clamping and releasing of the rubber core of the blowout preventer box and the opening and closing of the window.

[0012] Furthermore, when the blowout box one clamping and releasing solenoid valve and the blowout box one rubber core and window function conversion ball valve are all in the upper position, the P1 port and B1 port of the blowout box one clamping and releasing solenoid valve, the C1 port and D1 port of the blowout box one rubber core and window function conversion ball valve, the F1 port and the rodless cavity of the blowout box one rubber core control cylinder are connected in sequence, the rod cavity and H1 port of the blowout box one rubber core control cylinder, the A1 port and T1 port of the blowout box one clamping and releasing solenoid valve and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the blowout box one rubber core control cylinder to move toward the rod cavity, thereby realizing the rubber core clamping function of the blowout box one;

[0013] When the blowout box one clamping and releasing solenoid valve is in the lower position and the blowout box one rubber core and the window function conversion ball valve is in the upper position, the P1 port and the A1 port of the blowout box one clamping and releasing solenoid valve, the H1 port and the rod cavity of the blowout box one rubber core control cylinder are connected in sequence, the rodless cavity and the F1 port of the blowout box one rubber core control cylinder, the D1 port and the C1 port of the blowout box one rubber core and the window function conversion ball valve, the B1 port and the T1 port of the blowout box one clamping and releasing solenoid valve and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the blowout box one rubber core control cylinder to move toward the rodless cavity, thereby realizing the rubber core releasing function of the blowout box one;

[0014] When the blowout box one clamping and releasing solenoid valve and the blowout box one rubber core and the window function conversion ball valve are all in the lower position, the P1 port and A1 port of the blowout box one clamping and releasing solenoid valve, the I1 port and the rod cavity of the blowout box one window control oil cylinder are connected in sequence, the rodless cavity and G1 port of the blowout box one window control oil cylinder, the E1 port and C1 port of the blowout box one rubber core and the window function conversion ball valve, the B1 port and T1 port of the blowout box one clamping and releasing solenoid valve and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the blowout box one window control oil cylinder to move toward the rodless cavity, thereby realizing the window opening function of the blowout box one;

[0015] When the blowout box one clamping and releasing solenoid valve is in the upper position and the blowout box one rubber core and the window function conversion ball valve are in the lower position, the P1 port and B1 port of the blowout box one clamping and releasing solenoid valve, the C1 port and E1 port of the blowout box one rubber core and the window function conversion ball valve, the G1 port and the rodless cavity of the blowout box one window control oil cylinder are connected in sequence, the rod cavity and I1 port of the blowout box one window control oil cylinder, the A1 port and T1 port of the blowout box one clamping and releasing solenoid valve and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the blowout box one window control oil cylinder to move toward the rod cavity, thereby realizing the window closing function of the blowout box one.

[0016] Furthermore, when the second clamping and releasing solenoid valve of the blowout box and the second rubber core and window function conversion ball valve are all in the upper position, the P2 port and B2 port of the second clamping and releasing solenoid valve of the blowout box, the C2 port and D2 port of the second rubber core and window function conversion ball valve of the blowout box, the F2 port and the rodless cavity of the second rubber core control cylinder of the blowout box are connected in sequence, the rod cavity and H2 port of the second rubber core control cylinder of the blowout box, the A2 port and T2 port of the second clamping and releasing solenoid valve of the blowout box and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second rubber core control cylinder of the blowout box to move toward the rod cavity, thereby realizing the rubber core clamping function of the second blowout box;

[0017] When the second clamping and releasing solenoid valve of the blowout box is in the lower position and the second rubber core of the blowout box and the window function conversion ball valve are in the upper position, the P2 port and A2 port of the second clamping and releasing solenoid valve of the blowout box, the H2 port and the rod cavity of the second rubber core control cylinder of the blowout box are connected in sequence, the rodless cavity and F2 port of the second rubber core control cylinder of the blowout box, the D2 port and C2 port of the second rubber core of the blowout box and the window function conversion ball valve, the B2 port and T2 port of the second clamping and releasing solenoid valve of the blowout box and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second rubber core control cylinder of the blowout box to move toward the rodless cavity, thereby realizing the rubber core releasing function of the second blowout box;

[0018] When the second clamping and releasing solenoid valve of the blowout box and the second rubber core of the blowout box and the window function conversion ball valve are all in the lower position, the P2 port and A2 port of the second clamping and releasing solenoid valve of the blowout box, the I2 port and the rod cavity of the second window control oil cylinder of the blowout box are connected in sequence, the rodless cavity and G2 port of the second window control oil cylinder of the blowout box, the E2 port and C2 port of the second rubber core of the blowout box and the window function conversion ball valve, the B2 port and T2 port of the second clamping and releasing solenoid valve of the blowout box and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second window control oil cylinder of the blowout box to move toward the rodless cavity, thereby realizing the window opening function of the second blowout box;

[0019] When the second clamping and releasing solenoid valve of the blowout box is in the upper position and the second rubber core of the blowout box and the window function conversion ball valve are in the lower position, the P2 port and B2 port of the second clamping and releasing solenoid valve of the blowout box, the C2 port and E2 port of the second rubber core of the blowout box and the window function conversion ball valve, the G2 port and the rodless cavity of the second window control oil cylinder of the blowout box are connected in sequence, the rod cavity and I2 port of the second window control oil cylinder of the blowout box, the A2 port and T2 port of the second clamping and releasing solenoid valve of the blowout box and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second window control oil cylinder of the blowout box to move toward the rod cavity, thereby realizing the window closing function of the second blowout box.

[0020] Furthermore, the blowout preventer box first rubber core and window function conversion ball valve and the blowout preventer box second rubber core and window function conversion ball valve are both two-position three-way ball valve type reversing valves.

[0021] By rotating the ball valve for switching the function of the rubber core and the sight glass of BOP Box 1 or BOP Box 2, the functions of the rubber core cylinder and the sight glass of BOP Box 1 or BOP Box 2 can be switched. After the function switching of the rubber core cylinder or the sight glass of BOP Box 1 or BOP Box 2 is completed, the clamping and releasing solenoid valve 1-1 of BOP Box 1 or the clamping and releasing solenoid valve 2-1 of BOP Box 2 are controlled to clamp and release the rubber core cylinder of BOP Box 1 or BOP Box 2, or to open and close the sight glass of BOP Box 1 or BOP Box 2.

[0022] A double blowout preventer cartridge rubber core and window conversion control method, using the above-mentioned double blowout preventer cartridge rubber core and window conversion control hydraulic system, hydraulic oil respectively enters the blowout preventer cartridge first clamping and releasing solenoid valve and the blowout preventer cartridge second clamping and releasing solenoid valve to form the following circuit;

[0023] Blowout box-rubber core clamping circuit:

[0024] When the hydraulic oil enters the P1 port of the blowout preventer box clamping and releasing solenoid valve, operate the blowout preventer box clamping and releasing solenoid valve at this time, so that the blowout preventer box clamping and releasing solenoid valve is in the upper position, then the liquid flows in from the P1 port of the blowout preventer box clamping and releasing solenoid valve, flows out from the B1 port of the blowout preventer box clamping and releasing solenoid valve, and then enters the C1 port of the blowout preventer box rubber core and window function conversion ball valve, operate the blowout preventer box rubber core and window function conversion ball valve, so that the blowout preventer box rubber core and window function conversion ball valve is in the upper position, then the liquid flows from the blowout preventer box. The fluid flows into the C1 port of the spray box clamping and releasing solenoid valve, flows out of the D1 port of the spray box core and the window function conversion ball valve, and flows into the rodless cavity of the spray box core control cylinder through the F1 port of the spray box core control cylinder. At this time, the fluid in the rod cavity of the spray box core control cylinder flows from the H1 port of the spray box core control cylinder to the A1 port of the spray box clamping and releasing solenoid valve, and finally flows back to the hydraulic oil tank from the T1 port of the spray box clamping and releasing solenoid valve, thereby realizing the clamping control function of the spray box core control cylinder;

[0025] Blowout prevention box - rubber core loosening circuit:

[0026] When the hydraulic oil enters the P1 port of the blowout preventer box's clamping and releasing solenoid valve, operate the blowout preventer box's clamping and releasing solenoid valve at this time, so that the blowout preventer box's clamping and releasing solenoid valve is in the lower position, and the liquid flows in from the P1 port of the blowout preventer box's clamping and releasing solenoid valve, flows out from the A1 port of the blowout preventer box's clamping and releasing solenoid valve, flows into the rod cavity of the blowout preventer box's rubber core control cylinder through the H1 port, operates the blowout preventer box's rubber core and the window function conversion ball valve, so that the blowout preventer box's rubber core and the window function conversion ball valve are in the upper position, and the blowout preventer box's rubber core control cylinder is The liquid in the rodless chamber flows out from the F1 port and enters the D1 port of the blowout preventer box-rubber core and window function conversion ball valve. The liquid flows from the D1 port of the blowout preventer box-rubber core and window function conversion ball valve to the C1 port of the blowout preventer box-rubber core and window function conversion ball valve. The liquid flows through the C1 port of the blowout preventer box-rubber core and window function conversion ball valve into the B1 port of the blowout preventer box-clamping and releasing solenoid valve. Finally, it flows back to the hydraulic oil tank from the T1 port of the blowout preventer box-clamping and releasing solenoid valve, thereby realizing the release control function of the blowout preventer box-rubber core control cylinder.

[0027] BOP box-window closing circuit:

[0028] When the hydraulic oil enters the P1 port of the blowout preventer box's clamping and loosening solenoid valve, at this time, operate the blowout preventer box's clamping and loosening solenoid valve to make the blowout preventer box's clamping and loosening solenoid valve in the upper position, then the liquid flows in from the P1 port of the blowout preventer box's clamping and loosening solenoid valve, flows out from the B1 port of the blowout preventer box's clamping and loosening solenoid valve, and then enters the C1 port of the blowout preventer box's rubber core and window function conversion ball valve. At this time, operate the blowout preventer box's rubber core and window function conversion ball valve to make the blowout preventer box's rubber core and window function conversion ball valve in the lower position, then the liquid flows from the blowout preventer box's rubber core and window function conversion ball valve. The liquid flows into the C1 port of the blowout preventer box-a rubber core and the window function conversion ball valve, flows out of the E1 port of the blowout preventer box-a rubber core and the window function conversion ball valve, and flows into the rodless cavity through the G1 port of the blowout preventer box-a window control oil cylinder. At this time, the liquid flow in the rod cavity of the blowout preventer box-a window control oil cylinder flows from the I1 port of the blowout preventer box-a window control oil cylinder to the A1 port of the blowout preventer box-a clamping and releasing solenoid valve, and finally flows back to the hydraulic oil tank from the T1 port of the blowout preventer box-a clamping and releasing solenoid valve, thereby realizing the closing control function of the blowout preventer box-a window control oil cylinder;

[0029] BOP box window opening circuit:

[0030] When the hydraulic oil enters the P1 port of the blowout box clamping and releasing solenoid valve, operate the blowout box clamping and releasing solenoid valve at this time to make the blowout box clamping and releasing solenoid valve in the lower position, then the liquid flows in from the P1 port of the blowout box clamping and releasing solenoid valve, flows out from the A1 port of the blowout box clamping and releasing solenoid valve, flows into the rod cavity of the blowout box window control oil cylinder through the I1 port, operates the blowout box rubber core and window function conversion ball valve to make the blowout box rubber core and window function conversion ball valve in the lower position, at this time the rodless cavity of the blowout box window control oil cylinder The liquid flows out from the G1 port of the blowout preventer box-window control cylinder and enters the E1 port of the blowout preventer box-rubber core and window function conversion ball valve. The liquid flows from the E1 port of the blowout preventer box-rubber core and window function conversion ball valve to the C1 port of the blowout preventer box-rubber core and window function conversion ball valve, enters the B1 port of the blowout preventer box-clamping and releasing solenoid valve through the C1 port of the blowout preventer box-rubber core and window function conversion ball valve, and finally flows back to the hydraulic oil tank from the T1 port of the blowout preventer box-clamping and releasing solenoid valve, thereby realizing the opening function of the blowout preventer box-window control cylinder;

[0031] Blowout preventer box second rubber core clamping circuit:

[0032] When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve of the blowout preventer box, operate the second clamping and releasing solenoid valve of the blowout preventer box to make the second clamping and releasing solenoid valve of the blowout preventer box be in the upper position, then the liquid flows in from the P2 port of the second clamping and releasing solenoid valve of the blowout preventer box, flows out from the B2 port of the second clamping and releasing solenoid valve of the blowout preventer box, and then enters the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve, operate the second rubber core of the blowout preventer box and the window function conversion ball valve to make the second rubber core of the blowout preventer box and the window function conversion ball valve be in the upper position, then the liquid flows from the blowout preventer box. The liquid flows into the C2 port of the second clamping and releasing solenoid valve of the spray box, flows out of the D2 port of the second rubber core of the spray box and the window function conversion ball valve, and flows into the rodless cavity of the second rubber core control cylinder of the spray box through the F2 port of the second rubber core control cylinder of the spray box. At this time, the liquid flow in the rod cavity of the second rubber core control cylinder of the spray box flows from the H2 port of the second rubber core control cylinder of the spray box to the A2 port of the second clamping and releasing solenoid valve of the spray box, and finally flows back to the hydraulic oil tank from the T2 port of the second clamping and releasing solenoid valve of the spray box, thereby realizing the clamping control function of the second rubber core control cylinder of the spray box;

[0033] The second rubber core loosening circuit of the blowout preventer box:

[0034] When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve of the blowout preventer box, operate the second clamping and releasing solenoid valve of the blowout preventer box to make it in the lower position, then the liquid flows in from the P2 port of the second clamping and releasing solenoid valve of the blowout preventer box, flows out from the A2 port of the second clamping and releasing solenoid valve of the blowout preventer box, flows into the rod cavity of the oil cylinder through the H2 port of the second rubber core of the blowout preventer box, operates the second rubber core of the blowout preventer box and the window function conversion ball valve to make them in the upper position, at this time the second rubber core of the blowout preventer box controls the oil cylinder The liquid in the rodless chamber flows out from the F2 port and enters the D2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve. The liquid then flows from the D2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve to the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve, enters the B2 port of the second clamping and releasing solenoid valve of the blowout preventer box through the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve, and finally flows back to the hydraulic oil tank from the T2 port of the second clamping and releasing solenoid valve of the blowout preventer box, thereby realizing the release control function of the second rubber core control cylinder of the blowout preventer box;

[0035] BOP box second window closing circuit:

[0036] When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve of the blowout preventer box, the second clamping and releasing solenoid valve of the blowout preventer box is operated at this time, so that the second clamping and releasing solenoid valve of the blowout preventer box is in the upper position, and the liquid flows in from the P2 port of the second clamping and releasing solenoid valve of the blowout preventer box, flows out from the B2 port of the second clamping and releasing solenoid valve of the blowout preventer box, and then enters the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve. At this time, the second rubber core of the blowout preventer box and the window function conversion ball valve are operated to make the second rubber core of the blowout preventer box and the window function conversion ball valve be in the lower position, then the liquid flows from the blowout preventer box. The liquid flows in from the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve, and flows out from the E2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve, and flows into the rodless cavity through the G2 port of the second window control oil cylinder of the blowout preventer box. At this time, the liquid flow in the rod cavity of the second window control oil cylinder of the blowout preventer box flows from the I2 port of the second window control oil cylinder of the blowout preventer box to the A2 port of the second clamping and releasing solenoid valve of the blowout preventer box, and finally flows back to the hydraulic oil tank from the T2 port of the second clamping and releasing solenoid valve of the blowout preventer box, thereby realizing the closing control function of the second window control oil cylinder of the blowout preventer box;

[0037] BOP box second window opening circuit:

[0038] When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve of the blowout preventer box, the second clamping and releasing solenoid valve of the blowout preventer box is operated at this time, so that the second clamping and releasing solenoid valve of the blowout preventer box is in the lower position, and the liquid flows in from the P2 port of the second clamping and releasing solenoid valve of the blowout preventer box, flows out from the A2 port of the second clamping and releasing solenoid valve of the blowout preventer box, and flows into the rod cavity of the second window control oil cylinder through the I2 port of the blowout preventer box. Operate the second rubber core of the blowout preventer box and the window function conversion ball valve, so that the second rubber core of the blowout preventer box and the window function conversion ball valve are in the lower position. At this time, the rodless cavity of the second window control oil cylinder of the blowout preventer box is The liquid flows out from the G2 port of the second window control cylinder of the blowout preventer box and enters the E2 port of the second rubber core and window function conversion ball valve of the blowout preventer box. The liquid flows from the E2 port of the second rubber core and window function conversion ball valve of the blowout preventer box to the C2 port of the second rubber core and window function conversion ball valve of the blowout preventer box, enters the B2 port of the second clamping and releasing solenoid valve of the blowout preventer box through the C2 port of the second rubber core and window function conversion ball valve of the blowout preventer box, and finally flows back to the hydraulic oil tank from the T2 port of the second clamping and releasing solenoid valve of the blowout preventer box, thereby realizing the opening function of the second window control cylinder of the blowout preventer box.

[0039] The positive effects of the present invention are as follows: in addition to meeting the basic requirements for the operation of traditional blowout preventer boxes, the control valve group integrated on the double blowout preventer box can realize the rapid switching of the rubber core clamping and loosening functions and the window opening and closing functions of the double blowout preventer box without plugging in or out the control pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic diagram of the hydraulic power transmission route of the present invention;

[0041] Figure 2 This is a schematic diagram of the internal hydraulic pressure of the valve group of the present invention;

[0042] In the figure: BOP box 1 clamping and releasing solenoid valve 1-1, BOP box 1 rubber core and window function conversion ball valve 1-2, BOP box 1 rubber core control cylinder 1-3, BOP box 1 window control cylinder 1-4, BOP box 2 clamping and releasing solenoid valve 2-1, BOP box 2 rubber core and window function conversion ball valve 2-2, BOP box 2 rubber core control cylinder 2-3, BOP box 2 window control cylinder 2-4. DETAILED DESCRIPTION

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0044] Refer to the attached Figure 1 and 2 This embodiment provides a hydraulic system for controlling the switching of a double blowout preventer cartridge rubber core and a sight glass. A blowout preventer cartridge first clamping and releasing solenoid valve 1-1, a blowout preventer cartridge first rubber core and sight glass function switching ball valve 1-2, a blowout preventer cartridge second clamping and releasing solenoid valve 2-1, and a blowout preventer cartridge second rubber core and sight glass function switching ball valve 2-2 are integrated and installed on the valve group body.

[0045] The P1 port of the clamping and releasing solenoid valve 1-1 of the blowout box is connected to the hydraulic oil, and the T1 port of the clamping and releasing solenoid valve 1-1 of the blowout box is connected to the hydraulic oil tank; the A1 port of the clamping and releasing solenoid valve 1-1 of the blowout box is correspondingly connected to the rod chamber of the blowout box-rubber core control cylinder 1-3 and the blowout box-window control cylinder 1-4, and the B1 port of the clamping and releasing solenoid valve 1-1 of the blowout box is connected to the blowout box-rubber core and the window function conversion ball valve 1-2. The C1 port, the D1 port of the blowout box 1-2 and the rubber core of the blowout box 1-3 are connected to the rodless cavity of the oil cylinder 1-3, and the E1 port of the blowout box 1-2 and the rubber core of the window function conversion ball valve 1-2 are connected to the rodless cavity of the blowout box 1-4 which controls the oil cylinder 1-4; the said blowout box 1-1 clamping and releasing solenoid valve 1-1 and the blowout box 1-2 and the window function conversion ball valve 1-2 work together to realize the clamping and releasing of the rubber core of the blowout box 1 and the opening and closing of the window;

[0046] The P2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box is connected to the hydraulic oil, and the T2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box is connected to the hydraulic oil tank; the A2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box is connected to the rod chamber of the second rubber core control cylinder 2-3 of the blowout box and the second window control cylinder 2-4 of the blowout box, and the B2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box is connected to the second rubber core of the blowout box and the window function conversion ball valve 2-2. The C2 port, the D2 port of the second rubber core of the blowout box and the window function conversion ball valve 2-2 are connected to the rodless chamber of the second rubber core of the blowout box controlling the oil cylinder 2-3, and the E2 port of the second rubber core of the blowout box and the window function conversion ball valve 2-2 are connected to the rodless chamber of the second window control oil cylinder 2-4 of the blowout box; the second clamping and releasing solenoid valve 2-1 of the blowout box and the second rubber core of the blowout box and the window function conversion ball valve 2-2 work together to realize the clamping and releasing of the rubber core of the blowout box and the opening and closing of the window.

[0047] When the blowout box clamping and releasing solenoid valve 1-1 and the blowout box rubber core and window function conversion ball valve 1-2 are all in the upper position, the P1 port and B1 port of the blowout box clamping and releasing solenoid valve 1-1, the C1 port and D1 port of the blowout box rubber core and window function conversion ball valve 1-2, the F1 port and the rodless cavity of the blowout box rubber core control cylinder 1-3 are connected in sequence, the rod cavity and H1 port of the blowout box rubber core control cylinder 1-3, the A1 port and T1 port of the blowout box clamping and releasing solenoid valve 1-1 and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the blowout box rubber core control cylinder 1-3 to move toward the rod cavity, thereby realizing the rubber core clamping function of the blowout box;

[0048] When the blowout box clamping and releasing solenoid valve 1-1 is in the lower position and the blowout box rubber core and window function conversion ball valve 1-2 is in the upper position, the P1 port and A1 port of the blowout box clamping and releasing solenoid valve 1-1, the H1 port and the rod cavity of the blowout box rubber core control cylinder 1-3 are connected in sequence, the rodless cavity and F1 port of the blowout box rubber core control cylinder 1-3, the D1 port and C1 port of the blowout box rubber core and window function conversion ball valve 1-2, the B1 port and T1 port of the blowout box clamping and releasing solenoid valve 1-1 and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the blowout box rubber core control cylinder 1-3 to move toward the rodless cavity, thereby realizing the rubber core releasing function of the blowout box;

[0049] When the blowout box clamping and releasing solenoid valve 1-1 and the blowout box rubber core and the window function conversion ball valve 1-2 are all in the lower position, the P1 port and the A1 port of the blowout box clamping and releasing solenoid valve 1-1, the I1 port and the rod cavity of the blowout box window control oil cylinder 1-4 are connected in sequence, the rodless cavity and the G1 port of the blowout box window control oil cylinder 1-4, the E1 port and the C1 port of the blowout box rubber core and the window function conversion ball valve 1-2, the B1 port and the T1 port of the blowout box clamping and releasing solenoid valve 1-1 and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the blowout box window control oil cylinder 1-4 to move toward the rodless cavity, thereby realizing the window opening function of the blowout box;

[0050] When the blowout box one clamping and releasing solenoid valve 1-1 is in the upper position and the blowout box one rubber core and window function conversion ball valve 1-2 is in the lower position, the P1 port and B1 port of the blowout box one clamping and releasing solenoid valve 1-1, the C1 port and E1 port of the blowout box one rubber core and window function conversion ball valve 1-2, the G1 port and the rodless cavity of the blowout box one window control oil cylinder 1-4 are connected in sequence, the rod cavity and I1 port of the blowout box one window control oil cylinder 1-4, the A1 port and T1 port of the blowout box one clamping and releasing solenoid valve 1-1 and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the blowout box one window control oil cylinder 1-4 to move toward the rod cavity, thereby realizing the window closing function of the blowout box one.

[0051] When the second clamping and releasing solenoid valve 2-1 of the blowout box and the second rubber core and window function conversion ball valve 2-2 are all in the upper position, the P2 port and B2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box, the C2 port and D2 port of the second rubber core and window function conversion ball valve 2-2 of the blowout box, the F2 port and the rodless cavity of the second rubber core control cylinder 2-3 of the blowout box are connected in sequence, the rod cavity and H2 port of the second rubber core control cylinder 2-3 of the blowout box, the A2 port and T2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second rubber core control cylinder 2-3 of the blowout box to move toward the rod cavity, thereby realizing the rubber core clamping function of the second blowout box;

[0052] When the second clamping and releasing solenoid valve 2-1 of the blowout box is in the lower position and the second rubber core of the blowout box and the window function conversion ball valve 2-2 are in the upper position, the P2 port and A2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box, the H2 port and the rod cavity of the second rubber core control cylinder 2-3 of the blowout box are connected in sequence, the rodless cavity and F2 port of the second rubber core control cylinder 2-3 of the blowout box, the D2 port and C2 port of the second rubber core of the blowout box and the window function conversion ball valve 2-2, the B2 port and T2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second rubber core control cylinder 2-3 of the blowout box to move toward the rodless cavity, thereby realizing the rubber core releasing function of the second blowout box;

[0053] When the second clamping and releasing solenoid valve 2-1 of the blowout box and the second rubber core of the blowout box and the window function conversion ball valve 2-2 are all in the lower position, the P2 port and A2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box, the I2 port and the rod cavity of the second window control oil cylinder 2-4 of the blowout box are connected in sequence, the rodless cavity and G2 port of the second window control oil cylinder 2-4 of the blowout box, the E2 port and C2 port of the second rubber core of the blowout box and the window function conversion ball valve 2-2, the B2 port and T2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second window control oil cylinder 2-4 of the blowout box to move toward the rodless cavity, thereby realizing the window opening function of the second blowout box;

[0054] When the second clamping and releasing solenoid valve 2-1 of the blowout box is in the upper position and the second rubber core and window function conversion ball valve 2-2 of the blowout box is in the lower position, the P2 port and B2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box, the C2 port and E2 port of the second rubber core and window function conversion ball valve 2-2 of the blowout box, the G2 port and the rodless cavity of the second window control oil cylinder 2-4 of the blowout box are connected in sequence, the rod cavity and I2 port of the second window control oil cylinder 2-4 of the blowout box, the A2 port and T2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second window control oil cylinder 2-4 of the blowout box to move toward the rod cavity, thereby realizing the window closing function of the blowout box two.

[0055] The blowout preventer box first rubber core and window function conversion ball valve 1-2 and the blowout preventer box second rubber core and window function conversion ball valve 2-2 are both two-position three-way ball valve type reversing valves.

[0056] In this embodiment, hydraulic power is provided to the first and second clamping and releasing solenoid valves 1-1 and 2-1 of the blowout box through the manual ball valves 1 and 2 installed in the control room. The P1 port of the first clamping and releasing solenoid valve 1-1 is connected to the first manual ball valve in the control room, and the hydraulic system supplies hydraulic oil to the first clamping and releasing solenoid valve 1-1 through the first manual ball valve. The P2 port of the second clamping and releasing solenoid valve 2-1 is connected to the second manual ball valve in the control room, and the hydraulic system supplies hydraulic oil to the second clamping and releasing solenoid valve 2-1 through the second manual ball valve.

[0057] A double blowout preventer cartridge rubber core and window conversion control method, using the above-mentioned double blowout preventer cartridge rubber core and window conversion control hydraulic system, hydraulic oil respectively enters the blowout preventer cartridge first clamping and releasing solenoid valve 1-1 and the blowout preventer cartridge second clamping and releasing solenoid valve 2-1 to form the following circuit;

[0058] Blowout box-rubber core clamping circuit:

[0059] When the hydraulic oil enters the P1 port of the blowout preventer box clamping and releasing solenoid valve 1-1, at this time, operate the blowout preventer box clamping and releasing solenoid valve 1-1, so that the blowout preventer box clamping and releasing solenoid valve 1-1 is in the upper position, then the liquid flows in from the P1 port of the blowout preventer box clamping and releasing solenoid valve 1-1, flows out from the B1 port of the blowout preventer box clamping and releasing solenoid valve 1-1, and then enters the C1 port of the blowout preventer box rubber core and window function conversion ball valve 1-2, operate the blowout preventer box rubber core and window function conversion ball valve 1-2, so that the blowout preventer box rubber core and window function conversion ball valve 1-2 are in the upper position, then the liquid flows from the blowout preventer box. The fluid flows into the C1 port of the spray box clamping and releasing solenoid valve 1-1, flows out of the D1 port of the spray box rubber core and the window function conversion ball valve 1-2, and flows into the rodless cavity of the spray box rubber core control cylinder 1-3 through the F1 port. At this time, the fluid in the rod cavity of the spray box rubber core control cylinder 1-3 flows from the H1 port of the spray box rubber core control cylinder 1-3 to the A1 port of the spray box clamping and releasing solenoid valve 1-1, and finally flows back to the hydraulic oil tank from the T1 port of the spray box clamping and releasing solenoid valve 1-1, thereby realizing the clamping control function of the spray box rubber core control cylinder 1-3;

[0060] Blowout prevention box - rubber core loosening circuit:

[0061] When the hydraulic oil enters the P1 port of the blowout box clamping and releasing solenoid valve 1-1, the blowout box clamping and releasing solenoid valve 1-1 is operated at this time, so that the blowout box clamping and releasing solenoid valve 1-1 is in the lower position, and the liquid flows in from the P1 port of the blowout box clamping and releasing solenoid valve 1-1, flows out from the A1 port of the blowout box clamping and releasing solenoid valve 1-1, flows into the rod cavity of the blowout box rubber core control cylinder 1-3 through the H1 port, operates the blowout box rubber core and the window function conversion ball valve 1-2, so that the blowout box rubber core and the window function conversion ball valve 1-2 are in the upper position, and the blowout box rubber core control cylinder 1 -3's rodless chamber flows out from the F1 port and enters the D1 port of the blowout preventer box-rubber core and window function conversion ball valve 1-2. The liquid then flows from the D1 port of the blowout preventer box-rubber core and window function conversion ball valve 1-2 into the C1 port of the blowout preventer box-rubber core and window function conversion ball valve 1-2. Through the C1 port of the blowout preventer box-rubber core and window function conversion ball valve 1-2, the liquid flows into the B1 port of the blowout preventer box-clamping and releasing solenoid valve 1-1. Finally, it flows back to the hydraulic oil tank from the T1 port of the blowout preventer box-clamping and releasing solenoid valve 1-1, thereby realizing the release control function of the blowout preventer box-rubber core control cylinder 1-3.

[0062] BOP box-window closing circuit:

[0063] When the hydraulic oil enters the P1 port of the blowout preventer box-clamping and loosening solenoid valve 1-1, the blowout preventer box-clamping and loosening solenoid valve 1-1 is operated at this time, so that the blowout preventer box-clamping and loosening solenoid valve 1-1 is in the upper position, and the liquid flows in from the P1 port of the blowout preventer box-clamping and loosening solenoid valve 1-1, flows out from the B1 port of the blowout preventer box-clamping and loosening solenoid valve 1-1, and then enters the C1 port of the blowout preventer box-rubber core and window function conversion ball valve 1-2, and at this time operates the blowout preventer box-rubber core and window function conversion ball valve 1-2, so that the blowout preventer box-rubber core and window function conversion ball valve 1-2 are in the lower position, then the liquid flows from the blowout preventer box-rubber core and window function conversion ball valve 1-2. The liquid flows into the C1 port of the blowout preventer box-a rubber core and the window function conversion ball valve 1-2, flows out of the E1 port of the blowout preventer box-a rubber core and the window function conversion ball valve 1-2, and flows into the rodless cavity through the G1 port of the blowout preventer box-a window control oil cylinder 1-4. At this time, the liquid flow in the rod cavity of the blowout preventer box-a window control oil cylinder 1-4 flows from the I1 port of the blowout preventer box-a window control oil cylinder 1-4 to the A1 port of the blowout preventer box-a clamping and releasing solenoid valve 1-1, and finally flows back to the hydraulic oil tank from the T1 port of the blowout preventer box-a clamping and releasing solenoid valve 1-1, thereby realizing the closing control function of the blowout preventer box-a window control oil cylinder 1-4;

[0064] BOP box window opening circuit:

[0065] When the hydraulic oil enters the P1 port of the blowout box-clamping and loosening solenoid valve 1-1, the blowout box-clamping and loosening solenoid valve 1-1 is operated at this time, so that the blowout box-clamping and loosening solenoid valve 1-1 is in the lower position, and the liquid flows in from the P1 port of the blowout box-clamping and loosening solenoid valve 1-1, and flows out from the A1 port of the blowout box-clamping and loosening solenoid valve 1-1, and flows into the rod cavity of the blowout box-window control cylinder 1-4 through the I1 port, and operates the blowout box-rubber core and the window function conversion ball valve 1-2, so that the blowout box-rubber core and the window function conversion ball valve 1-2 are in the lower position. At this time, the blowout box-window control cylinder 1-4 is in the rodless cavity. The liquid flows out from the G1 port of the blowout preventer box-window control oil cylinder 1-4, enters the E1 port of the blowout preventer box-rubber core and window function conversion ball valve 1-2, and then flows from the E1 port of the blowout preventer box-rubber core and window function conversion ball valve 1-2 into the C1 port of the blowout preventer box-rubber core and window function conversion ball valve 1-2, enters the B1 port of the blowout preventer box-clamping and releasing solenoid valve 1-1 through the C1 port of the blowout preventer box-rubber core and window function conversion ball valve 1-2, and finally flows back to the hydraulic oil tank from the T1 port of the blowout preventer box-clamping and releasing solenoid valve 1-1, thereby realizing the opening function of the blowout preventer box-window control oil cylinder 1-4;

[0066] Blowout preventer box second rubber core clamping circuit:

[0067] When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, operate the second clamping and releasing solenoid valve 2-1 of the blowout preventer box to make the second clamping and releasing solenoid valve 2-1 in the upper position, then the liquid flows in from the P2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, flows out from the B2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, and then enters the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2, operate the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2, make the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2 in the upper position, then the liquid flows from the blowout preventer box. The fluid flows into the C2 port of the spray box second clamping and releasing solenoid valve 2-1, flows out of the D2 port of the spray box second rubber core and the window function conversion ball valve 2-2, and flows into the rodless cavity of the spray box second rubber core control cylinder 2-3 through the F2 port. At this time, the fluid in the rod cavity of the spray box second rubber core control cylinder 2-3 flows from the H2 port of the spray box second rubber core control cylinder 2-3 to the A2 port of the spray box second clamping and releasing solenoid valve 2-1, and finally flows back to the hydraulic oil tank from the T2 port of the spray box second clamping and releasing solenoid valve 2-1, thereby realizing the clamping control function of the spray box second rubber core control cylinder 2-3;

[0068] The second rubber core loosening circuit of the blowout preventer box:

[0069] When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box, the second clamping and releasing solenoid valve 2-1 of the blowout box is operated at this time, so that the second clamping and releasing solenoid valve 2-1 of the blowout box is in the lower position, and the liquid flows in from the P2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box, flows out from the A2 port of the second clamping and releasing solenoid valve 2-1 of the blowout box, and flows into the rod cavity of the second rubber core control cylinder 2-3 through the H2 port of the blowout box, and operates the second rubber core of the blowout box and the window function conversion ball valve 2-2, so that the second rubber core of the blowout box and the window function conversion ball valve 2-2 are in the upper position. At this time, the second rubber core of the blowout box controls the oil cylinder 2 -3's rodless chamber flows out from the F2 port and enters the D2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2. The liquid then flows from the D2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2 into the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2. The liquid flows through the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2 into the B2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, and finally flows back to the hydraulic oil tank from the T2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, thereby realizing the release control function of the second rubber core of the blowout preventer box control cylinder 2-3;

[0070] BOP box second window closing circuit:

[0071] When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, the second clamping and releasing solenoid valve 2-1 of the blowout preventer box is operated at this time, so that the second clamping and releasing solenoid valve 2-1 of the blowout preventer box is in the upper position, and the liquid flows in from the P2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, flows out from the B2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, and then enters the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2. At this time, the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2 are operated to make the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2 in the lower position, and the liquid flows from the blowout preventer box. The liquid flows into the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2, flows out of the E2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2, and flows into the rodless cavity of the second window control oil cylinder 2-4 through the G2 port of the blowout preventer box. At this time, the liquid flow in the rod cavity of the second window control oil cylinder 2-4 of the blowout preventer box flows from the I2 port of the second window control oil cylinder 2-4 to the A2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, and finally flows back to the hydraulic oil tank from the T2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, thereby realizing the closing control function of the second window control oil cylinder 2-4 of the blowout preventer box;

[0072] BOP box second window opening circuit:

[0073] When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, the second clamping and releasing solenoid valve 2-1 of the blowout preventer box is operated at this time, so that the second clamping and releasing solenoid valve 2-1 of the blowout preventer box is in the lower position, and the liquid flows in from the P2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, flows out from the A2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, and flows into the rod cavity of the second window control cylinder 2-4 through the I2 port of the blowout preventer box, and operates the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2, so that the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2 are in the lower position. At this time, the rodless cavity of the second window control cylinder 2-4 of the blowout preventer box is opened. The liquid flows out from the G2 port of the second window control oil cylinder 2-4 of the blowout preventer box, enters the E2 port of the second rubber core and the window function conversion ball valve 2-2 of the blowout preventer box, and then flows from the E2 port of the second rubber core and the window function conversion ball valve 2-2 of the blowout preventer box to the C2 port of the second rubber core and the window function conversion ball valve 2-2 of the blowout preventer box, enters the B2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box through the C2 port of the second rubber core and the window function conversion ball valve 2-2, and finally flows back to the hydraulic oil tank from the T2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, thereby realizing the opening function of the second window control oil cylinder 2-4 of the blowout preventer box.

[0074] In this embodiment:

[0075] Four function selection nameplates (hereinafter referred to as nameplates) are set on the main body of the valve group, namely nameplates one to four. Nameplates one and two are respectively set on both sides of the blowout preventer box one rubber core and the window function conversion ball valve 1-2, and nameplates three and four are respectively set on both sides of the blowout preventer box two rubber core and the window function conversion ball valve 2-2.

[0076] Nameplate 1 can be inscribed with "Blowout Preventer 1 Core" or "Blowout Preventer 1 Core," corresponding to the upper position (core control position) of the Blowout Preventer 1 Core and Window Function Switchover Ball Valve 1-2. Nameplate 2 can be inscribed with "Blowout Preventer 1 Window" or "Blowout Preventer 1 Window," corresponding to the lower position (window control position) of the Blowout Preventer 1 Core and Window Function Switchover Ball Valve 1-2. Rotating the handle of the Blowout Preventer 1 Core and Window Function Switchover Ball Valve 1-2 toward nameplate 1 or nameplate 2 selects the operation of either Blowout Preventer 1 Core Control Cylinder 1-3 or Blowout Preventer 1 Window Control Cylinder 1-4. Regardless of whether Blowout Preventer 1 Core Control Cylinder 1-3 or Blowout Preventer 1 Window Control Cylinder 1-4 is selected, their operation is controlled by Blowout Preventer 1 Clamping / Unclamping Solenoid Valve 1-1.

[0077] Nameplate three can be inscribed with "No. 2 BOP Core" or "No. 2 BOP Core," corresponding to the upper position (core control position) of the BOP core and window function switchover ball valve 2-2. Nameplate four can be inscribed with "No. 2 BOP Window" or "No. 2 BOP Window," corresponding to the lower position (window control position) of the BOP core and window function switchover ball valve 2-2. By rotating the handle of the BOP core and window function switchover ball valve 2-2 toward nameplate three or four, the BOP core and window function switchover ball valve 2-2 can be selected to control either the BOP core control cylinder 2-3 or the BOP window control cylinder 2-4. Regardless of whether the BOP core or window control cylinder 2-4 is selected, their operation is controlled by the BOP clamping and releasing solenoid valve 2-1.

[0078] For example:

[0079] When the rotation control handle of the blowout preventer box-rubber core and window function conversion ball valve 1-2 points to the nameplate of the blowout preventer box-window control oil cylinder 1-4, the blowout preventer box-clamping and releasing solenoid valve 1-1 is operated at this time to realize the clamping and releasing of the blowout preventer box-window control oil cylinder 1-4.

[0080] Similarly, when the rotation control handle of the blowout preventer box-rubber core and the window function conversion ball valve 1-2 points to the nameplate of the blowout preventer box-rubber core control cylinder 1-3, the blowout preventer box-rubber core control cylinder 1-3 can be opened and closed by operating the blowout preventer box-clamping and releasing solenoid valve 1-1.

[0081] Similarly

[0082] When the rotation control handle of the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2 points to the nameplate of the second window control oil cylinder 2-4 of the blowout preventer box, the second clamping and releasing solenoid valve 2-1 of the blowout preventer box can be operated to realize the clamping and releasing of the second window control oil cylinder 2-4 of the blowout preventer box.

[0083] Similarly, when the rotation control handle of the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2 points to the nameplate of the second rubber core control cylinder 2-3 of the blowout preventer box, the second clamping and releasing solenoid valve 2-1 of the blowout preventer box is operated at this time to realize the opening and closing of the second rubber core control cylinder 2-3 of the blowout preventer box.

[0084] In this embodiment, the hydraulic component models and manufacturers are as follows:

[0085] Blowout prevention box - clamping and releasing solenoid valve 1-1 Swiss Wandfluh, Wandfluh series valve group;

[0086] Blowout box, rubber core and window function conversion ball valve 1-2 American HOKE F series valve group;

[0087] Blowout box with rubber core to control oil cylinder 1-3 imported brand, STONE series;

[0088] Blowout box with a sight glass to control cylinders 1-4 Imported brand, STONE series;

[0089] Blowout preventer box 2 clamping and releasing solenoid valve 2-1 Swiss Wandflul, Wandflul series valve group;

[0090] Blowout preventer box two rubber core and window function conversion ball valve 2-2 American HOKE F series valve group;

[0091] Blowout prevention box two rubber core control cylinder 2-3 imported brand, STONE series;

[0092] Blowout prevention box two-window control cylinder 2-4 imported brand, STONE series.

[0093] The present invention integrates a blowout preventer cartridge clamping and releasing solenoid valve 1-1, a blowout preventer cartridge core and window function switching ball valve 1-2, a blowout preventer cartridge clamping and releasing solenoid valve 2-1, and a blowout preventer cartridge core and window function switching ball valve 2-2 into the valve block body, forming a control valve assembly. The control valve assembly is hard-wired to the blowout preventer body, enabling on-site control of the hydraulic system and function switching. Compared to traditional solutions, this eliminates complex peripheral wiring, resulting in a more compact layout and lower costs. It can also accommodate the selective switching of the coiled tubing blowout preventer cartridge core and the blowout preventer window.

Claims

1. A hydraulic system for controlling the conversion of a double blowout preventer cartridge rubber core and a window, characterized by: A blowout box first clamping and releasing solenoid valve (1-1), a blowout box first rubber core and window function conversion ball valve (1-2), a blowout box second clamping and releasing solenoid valve (2-1) and a blowout box second rubber core and window function conversion ball valve (2-2) are integrated and installed on the valve group body to form a control valve group; The P1 port of the blowout box clamping and releasing electromagnetic valve (1-1) is connected to the hydraulic oil, and the T1 port of the blowout box clamping and releasing electromagnetic valve (1-1) is connected to the hydraulic oil tank; the A1 port of the blowout box clamping and releasing electromagnetic valve (1-1) is correspondingly connected to the rod chamber of the blowout box rubber core control oil cylinder (1-3) and the blowout box window control oil cylinder (1-4), and the B1 port of the blowout box clamping and releasing electromagnetic valve (1-1) is connected to the blowout box rubber core and the window function conversion ball valve (1-2). The C1 port of the blowout box one rubber core and the window function conversion ball valve (1-2) is connected to the rodless chamber of the blowout box one rubber core control oil cylinder (1-3), and the E1 port of the blowout box one rubber core and the window function conversion ball valve (1-2) is connected to the rodless chamber of the blowout box one window control oil cylinder (1-4); the blowout box one clamping and releasing solenoid valve (1-1) and the blowout box one rubber core and the window function conversion ball valve (1-2) work together to realize the clamping and releasing of the blowout box one rubber core and the opening and closing of the window; The P2 port of the second clamping and releasing electromagnetic valve (2-1) of the blowout box is connected to the hydraulic oil, and the T2 port of the second clamping and releasing electromagnetic valve (2-1) of the blowout box is connected to the hydraulic oil tank; the A2 port of the second clamping and releasing electromagnetic valve (2-1) of the blowout box is correspondingly connected to the rod chamber of the second rubber core control cylinder (2-3) of the blowout box and the second window control cylinder (2-4) of the blowout box, and the B2 port of the second clamping and releasing electromagnetic valve (2-1) of the blowout box is connected to the second rubber core of the blowout box and the window function conversion ball valve (2-2). The C2 port of the second blowout box rubber core and the window function conversion ball valve (2-2) is connected to the rodless chamber of the second blowout box rubber core control oil cylinder (2-3), and the E2 port of the second blowout box rubber core and the window function conversion ball valve (2-2) is connected to the rodless chamber of the second blowout box window control oil cylinder (2-4); the second blowout box clamping and releasing solenoid valve (2-1) and the second blowout box rubber core and the window function conversion ball valve (2-2) work together to realize the clamping and releasing of the second blowout box rubber core and the opening and closing of the window.

2. A hydraulic system for controlling the conversion of a double blowout preventer cartridge rubber core and a window according to claim 1, characterized in that: When the blowout box clamping and releasing electromagnetic valve (1-1) and the blowout box rubber core and window function conversion ball valve (1-2) are both in the upper position, the P1 port and the B1 port of the blowout box clamping and releasing electromagnetic valve (1-1), the C1 port and the D1 port of the blowout box rubber core and window function conversion ball valve (1-2), the F1 port and the rodless cavity of the blowout box rubber core control oil cylinder (1-3) are connected in sequence, the rod cavity and the H1 port of the blowout box rubber core control oil cylinder (1-3), the A1 port and the T1 port of the blowout box clamping and releasing electromagnetic valve (1-1) and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the blowout box rubber core control oil cylinder (1-3) to move toward the rod cavity, thereby realizing the rubber core clamping function of the blowout box; When the blowout box clamping and releasing electromagnetic valve (1-1) is in the lower position and the blowout box rubber core and window function conversion ball valve (1-2) is in the upper position, the P1 port and the A1 port of the blowout box clamping and releasing electromagnetic valve (1-1), the H1 port and the rod cavity of the blowout box rubber core control oil cylinder (1-3) are connected in sequence, the rodless cavity and the F1 port of the blowout box rubber core control oil cylinder (1-3), the D1 port and the C1 port of the blowout box rubber core and window function conversion ball valve (1-2), the B1 port and the T1 port of the blowout box clamping and releasing electromagnetic valve (1-1) and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the blowout box rubber core control oil cylinder (1-3) to move toward the rodless cavity, thereby realizing the release function of the blowout box rubber core; When the blowout box clamping and releasing electromagnetic valve (1-1) and the blowout box rubber core and window function conversion ball valve (1-2) are all in the lower position, the P1 port and the A1 port of the blowout box clamping and releasing electromagnetic valve (1-1), the I1 port and the rod cavity of the blowout box window control oil cylinder (1-4) are connected in sequence, the rodless cavity and the G1 port of the blowout box window control oil cylinder (1-4), the E1 port and the C1 port of the blowout box rubber core and window function conversion ball valve (1-2), the B1 port and the T1 port of the blowout box clamping and releasing electromagnetic valve (1-1) and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the blowout box window control oil cylinder (1-4) to move toward the rodless cavity, thereby realizing the window opening function of the blowout box; When the blowout box clamping and releasing electromagnetic valve (1-1) is in the upper position and the blowout box rubber core and window function conversion ball valve (1-2) is in the lower position, the P1 port and the B1 port of the blowout box clamping and releasing electromagnetic valve (1-1), the C1 port and the E1 port of the blowout box rubber core and window function conversion ball valve (1-2), the G1 port and the rodless cavity of the blowout box window control oil cylinder (1-4) are connected in sequence, the rod cavity and the I1 port of the blowout box window control oil cylinder (1-4), the A1 port and the T1 port of the blowout box clamping and releasing electromagnetic valve (1-1) and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the blowout box window control oil cylinder (1-4) to move toward the rod cavity, thereby realizing the window closing function of the blowout box.

3. The hydraulic system for controlling the conversion of the double blowout preventer cartridge rubber core and the window according to claim 2, characterized in that: When the second blowout box clamping and releasing electromagnetic valve (2-1) and the second blowout box rubber core and window function conversion ball valve (2-2) are both in the upper position, the P2 port and the B2 port of the second blowout box clamping and releasing electromagnetic valve (2-1), the C2 port and the D2 port of the second blowout box rubber core and window function conversion ball valve (2-2), the F2 port and the rodless cavity of the second blowout box rubber core control oil cylinder (2-3) are connected in sequence, the rod cavity and the H2 port of the second blowout box rubber core control oil cylinder (2-3), the A2 port and the T2 port of the second blowout box clamping and releasing electromagnetic valve (2-1) and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second blowout box rubber core control oil cylinder (2-3) to move toward the rod cavity, thereby realizing the rubber core clamping function of the second blowout box; When the second blowout box clamping and releasing electromagnetic valve (2-1) is in the lower position and the second blowout box rubber core and window function conversion ball valve (2-2) is in the upper position, the P2 port and the A2 port of the second blowout box clamping and releasing electromagnetic valve (2-1), the H2 port and the rod cavity of the second blowout box rubber core control oil cylinder (2-3) are connected in sequence, the rodless cavity and the F2 port of the second blowout box rubber core control oil cylinder (2-3), the D2 port and the C2 port of the second blowout box rubber core and window function conversion ball valve (2-2), the B2 port and the T2 port of the second blowout box clamping and releasing electromagnetic valve (2-1) and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second blowout box rubber core control oil cylinder (2-3) to move toward the rodless cavity, thereby realizing the rubber core release function of the second blowout box; When the second clamping and releasing electromagnetic valve (2-1) of the blowout box and the second rubber core of the blowout box and the window function conversion ball valve (2-2) are all in the lower position, the P2 port and the A2 port of the second clamping and releasing electromagnetic valve (2-1) of the blowout box, the I2 port and the rod cavity of the second window control oil cylinder (2-4) of the blowout box are connected in sequence, the rodless cavity and the G2 port of the second window control oil cylinder (2-4), the E2 port and the C2 port of the second rubber core of the blowout box and the window function conversion ball valve (2-2), the B2 port and the T2 port of the second clamping and releasing electromagnetic valve (2-1) of the blowout box and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second window control oil cylinder (2-4) of the blowout box to move toward the rodless cavity, thereby realizing the window opening function of the second blowout box; When the second blowout box clamping and releasing electromagnetic valve (2-1) is in the upper position and the second blowout box rubber core and window function conversion ball valve (2-2) is in the lower position, the P2 port and the B2 port of the second blowout box clamping and releasing electromagnetic valve (2-1), the C2 port and the E2 port of the second blowout box rubber core and window function conversion ball valve (2-2), the G2 port and the rodless cavity of the second blowout box window control oil cylinder (2-4) are connected in sequence, the rod cavity and the I2 port of the second blowout box window control oil cylinder (2-4), the A2 port and the T2 port of the second blowout box clamping and releasing electromagnetic valve (2-1) and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second blowout box window control oil cylinder (2-4) to move toward the rod cavity, thereby realizing the window closing function of the second blowout box.

4. A hydraulic system for controlling the conversion of a double blowout preventer cartridge rubber core and a window according to claim 1 or 3, characterized in that: The blowout preventer box first rubber core and window function conversion ball valve (1-2) and the blowout preventer box second rubber core and window function conversion ball valve (2-2) are both two-position three-way ball valve type reversing valves.

5. A method for controlling the conversion of a double blowout preventer cartridge rubber core and a window, using the hydraulic system for controlling the conversion of a double blowout preventer cartridge rubber core and a window according to any one of claims 1 to 4, characterized in that: The hydraulic oil enters the first blowout preventer box clamping and releasing solenoid valve (1-1) and the second blowout preventer box clamping and releasing solenoid valve (2-1) respectively to form the following circuit; Blowout box-rubber core clamping circuit: When the hydraulic oil enters the P1 port of the blowout preventer box clamping and releasing solenoid valve (1-1), the blowout preventer box clamping and releasing solenoid valve (1-1) is operated at this time, so that the blowout preventer box clamping and releasing solenoid valve (1-1) is in the upper position, and the liquid flows in from the P1 port of the blowout preventer box clamping and releasing solenoid valve (1-1), flows out from the B1 port of the blowout preventer box clamping and releasing solenoid valve (1-1), and then enters the C1 port of the blowout preventer box rubber core and window function conversion ball valve (1-2), operates the blowout preventer box rubber core and window function conversion ball valve (1-2), so that the blowout preventer box rubber core and window function conversion ball valve (1-2) is in the upper position, then the liquid flows from the blowout preventer box. The liquid flows into the C1 port of the spray box clamping and releasing solenoid valve (1-1), flows out of the D1 port of the spray box rubber core and the window function conversion ball valve (1-2), and flows into the rodless cavity of the spray box rubber core control oil cylinder (1-3) through the F1 port of the spray box rubber core control oil cylinder (1-3). At this time, the liquid flow in the rod cavity of the spray box rubber core control oil cylinder (1-3) flows from the H1 port of the spray box rubber core control oil cylinder (1-3) to the A1 port of the spray box clamping and releasing solenoid valve (1-1), and finally flows back to the hydraulic oil tank from the T1 port of the spray box clamping and releasing solenoid valve (1-1), thereby realizing the clamping control function of the spray box rubber core control oil cylinder (1-3); Blowout prevention box - rubber core loosening circuit: When the hydraulic oil enters the P1 port of the blowout box clamping and releasing solenoid valve (1-1), the blowout box clamping and releasing solenoid valve (1-1) is operated at this time, so that the blowout box clamping and releasing solenoid valve (1-1) is in the lower position, and the liquid flows in from the P1 port of the blowout box clamping and releasing solenoid valve (1-1), flows out from the A1 port of the blowout box clamping and releasing solenoid valve (1-1), and flows into the rod cavity of the blowout box rubber core control cylinder (1-3) through the H1 port, operates the blowout box rubber core and the window function conversion ball valve (1-2), so that the blowout box rubber core and the window function conversion ball valve (1-2) are in the upper position, and at this time the blowout box rubber core control cylinder ( The liquid flow in the rodless chamber of the blowout box (1-3) flows out from the F1 port and enters the D1 port of the blowout box-rubber core and window function conversion ball valve (1-2), and then flows from the D1 port of the blowout box-rubber core and window function conversion ball valve (1-2) into the C1 port of the blowout box-rubber core and window function conversion ball valve (1-2), enters the B1 port of the blowout box-clamping and releasing solenoid valve (1-1) through the C1 port of the blowout box-rubber core and window function conversion ball valve (1-2), and finally flows back to the hydraulic oil tank from the T1 port of the blowout box-clamping and releasing solenoid valve (1-1), thereby realizing the release control function of the blowout box-rubber core control cylinder (1-3); BOP box-window closing circuit: When the hydraulic oil enters the P1 port of the blowout preventer box clamping and releasing solenoid valve (1-1), the blowout preventer box clamping and releasing solenoid valve (1-1) is operated at this time, so that the blowout preventer box clamping and releasing solenoid valve (1-1) is in the upper position, and the liquid flows in from the P1 port of the blowout preventer box clamping and releasing solenoid valve (1-1), flows out from the B1 port of the blowout preventer box clamping and releasing solenoid valve (1-1), and then enters the C1 port of the blowout preventer box rubber core and window function conversion ball valve (1-2). At this time, the blowout preventer box rubber core and window function conversion ball valve (1-2) is operated to make the blowout preventer box rubber core and window function conversion ball valve (1-2) in the lower position, and the liquid flows from the blowout preventer box. The liquid flows into the C1 port of the blowout box-a rubber core and the window function conversion ball valve (1-2), flows out of the E1 port of the blowout box-a rubber core and the window function conversion ball valve (1-2), and flows into the rodless cavity of the blowout box-a window control oil cylinder (1-4) through the G1 port. At this time, the liquid flow in the rod cavity of the blowout box-a window control oil cylinder (1-4) flows from the I1 port of the blowout box-a window control oil cylinder (1-4) to the A1 port of the blowout box-a clamping and releasing solenoid valve (1-1), and finally flows back to the hydraulic oil tank from the T1 port of the blowout box-a clamping and releasing solenoid valve (1-1), thereby realizing the closing control function of the blowout box-a window control oil cylinder (1-4); BOP box window opening circuit: When the hydraulic oil enters the P1 port of the blowout box clamping and releasing solenoid valve (1-1), the blowout box clamping and releasing solenoid valve (1-1) is operated at this time, so that the blowout box clamping and releasing solenoid valve (1-1) is in the lower position, and the liquid flows in from the P1 port of the blowout box clamping and releasing solenoid valve (1-1), flows out from the A1 port of the blowout box clamping and releasing solenoid valve (1-1), and flows into the rod cavity of the blowout box window control oil cylinder (1-4) through the I1 port, operates the blowout box rubber core and window function conversion ball valve (1-2), so that the blowout box rubber core and window function conversion ball valve (1-2) are in the lower position, and the rodless part of the blowout box window control oil cylinder (1-4) is opened. The liquid flow in the cavity flows out from the G1 port of the blowout box-window control oil cylinder (1-4) and enters the E1 port of the blowout box-rubber core and window function conversion ball valve (1-2). The liquid flow then flows from the E1 port of the blowout box-rubber core and window function conversion ball valve (1-2) into the C1 port of the blowout box-rubber core and window function conversion ball valve (1-2), enters the B1 port of the blowout box-clamping and releasing solenoid valve (1-1) through the C1 port of the blowout box-rubber core and window function conversion ball valve (1-2), and finally flows back to the hydraulic oil tank from the T1 port of the blowout box-clamping and releasing solenoid valve (1-1), thereby realizing the opening function of the blowout box-window control oil cylinder (1-4); Blowout preventer box second rubber core clamping circuit: When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve (2-1) of the blowout preventer box, the second clamping and releasing solenoid valve (2-1) of the blowout preventer box is operated at this time, so that the second clamping and releasing solenoid valve (2-1) of the blowout preventer box is in the upper position, and the liquid flows in from the P2 port of the second clamping and releasing solenoid valve (2-1) of the blowout preventer box, flows out from the B2 port of the second clamping and releasing solenoid valve (2-1), and then enters the C2 port of the second rubber core and the window function conversion ball valve (2-2) of the blowout preventer box. The second rubber core and the window function conversion ball valve (2-2) of the blowout preventer box are operated to make the second rubber core and the window function conversion ball valve (2-2) of the blowout preventer box be in the upper position, and the liquid flows out from the blowout preventer box. The liquid flows into the C2 port of the spray box second clamping and releasing solenoid valve (2-1), flows out of the D2 port of the spray box second rubber core and the window function conversion ball valve (2-2), and flows into the rodless cavity of the spray box second rubber core control oil cylinder (2-3) through the F2 port. At this time, the liquid flow in the rod cavity of the spray box second rubber core control oil cylinder (2-3) flows from the H2 port of the spray box second rubber core control oil cylinder (2-3) to the A2 port of the spray box second clamping and releasing solenoid valve (2-1), and finally flows back to the hydraulic oil tank from the T2 port of the spray box second clamping and releasing solenoid valve (2-1), thereby realizing the clamping control function of the spray box second rubber core control oil cylinder (2-3); The second rubber core loosening circuit of the blowout preventer box: When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve (2-1) of the blowout box, the second clamping and releasing solenoid valve (2-1) of the blowout box is operated, so that the second clamping and releasing solenoid valve (2-1) of the blowout box is in the lower position, and the liquid flows in from the P2 port of the second clamping and releasing solenoid valve (2-1), flows out from the A2 port of the second clamping and releasing solenoid valve (2-1), flows into the rod cavity of the second rubber core control cylinder (2-3) of the blowout box, and operates the second rubber core and the window function conversion ball valve (2-2) of the blowout box, so that the second rubber core and the window function conversion ball valve (2-2) of the blowout box are in the upper position. At this time, the second rubber core control cylinder ( The liquid in the rodless chamber of the blowout box (2-3) flows out from the F2 port and enters the D2 port of the blowout box second rubber core and the window function conversion ball valve (2-2), and then flows from the D2 port of the blowout box second rubber core and the window function conversion ball valve (2-2) into the C2 port of the blowout box second rubber core and the window function conversion ball valve (2-2), and enters the B2 port of the blowout box second clamping and releasing solenoid valve (2-1) through the C2 port of the blowout box second rubber core and the window function conversion ball valve (2-2), and finally flows back to the hydraulic oil tank from the T2 port of the blowout box second clamping and releasing solenoid valve (2-1), thereby realizing the release control function of the blowout box second rubber core control cylinder (2-3); BOP box second window closing circuit: When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve (2-1) of the blowout preventer box, the second clamping and releasing solenoid valve (2-1) of the blowout preventer box is operated at this time, so that the second clamping and releasing solenoid valve (2-1) of the blowout preventer box is in the upper position, and the liquid flows in from the P2 port of the second clamping and releasing solenoid valve (2-1) of the blowout preventer box, flows out from the B2 port of the second clamping and releasing solenoid valve (2-1), and then enters the C2 port of the second rubber core and the window function conversion ball valve (2-2) of the blowout preventer box. At this time, the second rubber core and the window function conversion ball valve (2-2) of the blowout preventer box are operated to make the second rubber core and the window function conversion ball valve (2-2) of the blowout preventer box be in the lower position, and the liquid flows from the blowout preventer box. The liquid flows into the C2 port of the second rubber core of the blowout box and the window function conversion ball valve (2-2), flows out of the E2 port of the second rubber core of the blowout box and the window function conversion ball valve (2-2), and flows into the rodless cavity of the second window control oil cylinder (2-4) through the G2 port of the blowout box. At this time, the liquid flow in the rod cavity of the second window control oil cylinder (2-4) of the blowout box flows from the I2 port of the second window control oil cylinder (2-4) to the A2 port of the second clamping and releasing solenoid valve (2-1) of the blowout box, and finally flows back to the hydraulic oil tank from the T2 port of the second clamping and releasing solenoid valve (2-1), thereby realizing the closing control function of the second window control oil cylinder (2-4) of the blowout box; BOP box second window opening circuit: When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve (2-1) of the blowout box, the second clamping and releasing solenoid valve (2-1) of the blowout box is operated, so that the second clamping and releasing solenoid valve (2-1) of the blowout box is in the lower position, and the liquid flows in from the P2 port of the second clamping and releasing solenoid valve (2-1), flows out from the A2 port of the second clamping and releasing solenoid valve (2-1), flows into the rod cavity of the second window control oil cylinder (2-4) of the blowout box, and operates the second rubber core of the blowout box and the window function conversion ball valve (2-2), so that the second rubber core of the blowout box and the window function conversion ball valve (2-2) are in the lower position. At this time, the rodless part of the second window control oil cylinder (2-4) of the blowout box is opened. The liquid flow in the cavity flows out from the G2 port of the second window control oil cylinder (2-4) of the blowout preventer box, enters the E2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve (2-2), and then flows from the E2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve (2-2) into the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve (2-2), enters the B2 port of the second clamping and releasing solenoid valve (2-1) of the blowout preventer box through the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve (2-2), and finally flows back to the hydraulic oil tank from the T2 port of the second clamping and releasing solenoid valve (2-1), thereby realizing the opening function of the second window control oil cylinder (2-4) of the blowout preventer box.

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