Hydraulic system and method for switching control of rubber core and window of duplex blowout prevention box

Abstract

The invention relates to a hydraulic system and method for switching control of a rubber core and a window of a duplex blowout prevention box, and belongs to the technical field of hydraulic control of duplex blowout prevention boxes. According to the technical scheme, when a first blowout prevention box rubber core and window function switching ball valve or a second blowout prevention box rubber core and window function switching ball valve is rotated, function switching of a rubber core oil cylinder and a window oil cylinder of a first blowout prevention box or a second blowout prevention box can be achieved. After the function switching of the rubber core oil cylinder or the window oil cylinder of the first blowout prevention box or the second blowout prevention box is completed, the clamping and loosening of the rubber core oil cylinder or the opening and closing of the window oil cylinder of the first blowout prevention box or the second blowout prevention box are realized by controlling the clamping and loosening electromagnetic valve of the first blowout prevention box or the clamping and loosening electromagnetic valve of the second blowout prevention box. According to the double-linkage blowout prevention box, the basic requirement for action operation of a traditional blowout prevention box can be met, and rapid switching of the rubber core clamping and loosening function and the window opening and closing function of the double-linkage blowout prevention box can be achieved through the control valve set integrated on the double-linkage blowout prevention box under the condition that a control pipeline is not inserted or pulled out.

Description

Technical Field

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

[0002] The blowout preventer is a key part of the coiled tubing equipment. Its main purpose is to control the wellhead pressure during the operation, effectively prevent the occurrence of blowout accidents, and achieve safe construction. The tightening and loosening of the existing blowout preventer and the opening and closing of the window are carried out through a manual ball valve (ball valve type reversing valve). The control pipeline from the manual ball valve is directly connected to the oil inlet and outlet interfaces of the blowout preventer rubber core cylinder or the blowout preventer window cylinder through a quick connector.

[0003] The double blowout preventer box has two sets of blowout preventers arranged up and down, namely blowout preventer box 1 and blowout preventer box 2. Both sets of blowout preventers have the same function of blowout preventer box rubber core oil cylinder and window oil cylinder. There are four oil inlet and outlet interfaces on the rubber core oil cylinder and window oil cylinder of each set of blowout preventer box, and there are eight oil inlet and outlet interfaces on the two sets of blowout preventer boxes, corresponding to four operation lines. The existing double blowout preventer box relies on two manual ball valves installed in the control room to control the compression and release of the two sets of blowout preventer box rubber core oil cylinders and the opening and closing of the window oil cylinder.

[0004] When the user needs to operate the window of the blowout box 1 to open or close, the two control lines at the oil inlet and outlet interfaces of the original blowout box 1 rubber core oil cylinder need to be removed, and then plugged into the oil inlet and outlet interfaces of the blowout box 1 window oil cylinder to switch the function of the rubber core clamping and loosening of the blowout box 1 to the window opening and closing function. Similarly, when the user needs to operate the rubber core clamping or loosening of the blowout box 1, the two control lines at the oil inlet and outlet interfaces of the original blowout box 1 window oil cylinder need to be removed, and then plugged into the oil inlet and outlet interfaces of the blowout box 1 rubber core oil cylinder.

[0005] When the user needs to operate the window of the second blowout box to open or close, the two control lines at the oil inlet and outlet interfaces of the original blowout box second rubber core oil cylinder need to be removed, and then plugged into the oil inlet and outlet interfaces of the second blowout box window oil cylinder to switch the function of the second blowout box rubber core clamping and loosening to the window opening and closing function. Similarly, when the user needs to operate the second blowout box rubber core clamping or loosening, the two control lines at the oil inlet and outlet interfaces of the original blowout box second window oil cylinder need to be removed, and then plugged into the oil inlet and outlet interfaces of the second blowout box rubber core oil 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 conversion of the rubber core and the window of a double blowout preventer box, which can not only meet the basic requirements of the traditional blowout preventer box operation, but also can achieve the rapid switching of the rubber core clamping and loosening functions of the double blowout preventer box and the window opening and closing functions without disassembling 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: A hydraulic system for double-linked blowout preventer box rubber core and window conversion control, wherein a blowout preventer box first clamping and releasing solenoid valve, a blowout preventer box first rubber core and window function conversion ball valve, a blowout preventer box second clamping and releasing solenoid valve and a blowout preventer box second rubber core and window function conversion ball valve are integrated and installed on the valve group body to form a control valve group; 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 corresponds to the rod chamber of the rubber core control cylinder of the blowout box and the window control cylinder of the blowout box, the B1 port of the clamping and releasing solenoid valve of the blowout box is connected with the C1 port of the blowout box rubber core and the window function conversion ball valve, the D1 port of the blowout box rubber core and the window function conversion ball valve is connected with the rodless chamber of the blowout box rubber core control cylinder, and the E1 port of the blowout box rubber core and the window function conversion ball valve is connected with the rodless chamber of the blowout box window control cylinder; the clamping and releasing solenoid valve of the blowout box and the rubber core of the blowout box and the window function conversion ball valve work together to realize the clamping and releasing of the rubber core of the blowout box and the opening and closing of the window; 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 corresponds to the rod chamber connected to 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 to 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 to the rodless chamber 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 to the rodless chamber 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.

[0009] Further, when the spray box one clamping and releasing solenoid valve and the spray box one rubber core and window function conversion ball valve are both in the upper position, the P1 port and B1 port of the spray box one clamping and releasing solenoid valve, the C1 port and D1 port of the spray box one rubber core and window function conversion ball valve, the F1 port and the rodless cavity of the spray box one rubber core control cylinder are connected in sequence, the rod cavity and H1 port of the spray box one rubber core control cylinder, the A1 port and T1 port of the spray 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 spray box one rubber core control cylinder to move toward the rod cavity, thereby realizing the spray box one rubber core clamping function; When the spray box 1 clamping and releasing electromagnetic valve is in the lower position and the spray box 1 rubber core and the window function conversion ball valve are in the upper position, the P1 port and the A1 port of the spray box 1 clamping and releasing electromagnetic valve, the H1 port and the rod cavity of the spray box 1 rubber core control cylinder are connected in sequence, the rodless cavity and the F1 port of the spray box 1 rubber core control cylinder, the D1 port and the C1 port of the spray box 1 rubber core and the window function conversion ball valve, the B1 port and the T1 port of the spray box 1 clamping and releasing electromagnetic valve and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the spray box 1 rubber core control cylinder to move toward the rodless cavity, so as to realize the spray box 1 rubber core release function; When the spray box clamping and releasing electromagnetic valve and the spray box rubber core and the window function conversion ball valve are all in the lower position, the P1 port and the A1 port of the spray box clamping and releasing electromagnetic valve, the I1 port and the rod cavity of the spray box window control oil cylinder are connected in sequence, the rodless cavity and the G1 port of the spray box window control oil cylinder, the E1 port and the C1 port of the spray box rubber core and the window function conversion ball valve, the B1 port and the T1 port of the spray box clamping and releasing electromagnetic valve and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the spray box window control oil cylinder to move toward the rodless cavity, so as to realize the window opening function of the spray box; When the spray box one clamping and releasing electromagnetic valve is in the upper position and the spray box one rubber core and the window function conversion ball valve are in the lower position, the P1 port and B1 port of the spray box one clamping and releasing electromagnetic valve, the C1 port and E1 port of the spray box one rubber core and the window function conversion ball valve, the G1 port and the rodless cavity of the spray box one window control oil cylinder are connected in sequence, the rod cavity and I1 port of the spray box one window control oil cylinder, the A1 port and T1 port of the spray box one clamping and releasing electromagnetic valve and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the spray box one window control oil cylinder to move toward the rod cavity, thereby realizing the window closing function of the spray box one.

[0010] Further, when the second spray box clamping and releasing solenoid valve and the second spray box rubber core and window function conversion ball valve are in the upper position, the P2 port and B2 port of the second spray box clamping and releasing solenoid valve, the C2 port and D2 port of the second spray box rubber core and window function conversion ball valve, the F2 port and the rodless cavity of the second spray box rubber core control cylinder are connected in sequence, the rod cavity and H2 port of the second spray box rubber core control cylinder, the A2 port and T2 port of the second spray box clamping and releasing solenoid valve and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second spray box rubber core control cylinder to move toward the rod cavity, thereby realizing the rubber core clamping function of the second spray box; When the second spray box clamping and releasing solenoid valve is in the lower position and the second spray box rubber core and the window function conversion ball valve are in the upper position, the P2 port and the A2 port of the second spray box clamping and releasing solenoid valve, the H2 port and the rod cavity of the second spray box rubber core control cylinder are connected in sequence, the rodless cavity and the F2 port of the second spray box rubber core control cylinder, the D2 port and the C2 port of the second spray box rubber core and the window function conversion ball valve, the B2 port and the T2 port of the second spray box clamping and releasing solenoid valve and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second spray box rubber core control cylinder to move toward the rodless cavity, so as to realize the rubber core release function of the second spray box; When the second spray box clamping and releasing solenoid valve and the second spray box rubber core and the window function conversion ball valve are all in the lower position, the P2 port and A2 port of the second spray box clamping and releasing solenoid valve, the I2 port and the rod cavity of the second spray box window control oil cylinder are connected in sequence, the rodless cavity and G2 port of the second spray box window control oil cylinder, the second spray box rubber core and the window function conversion ball valve E2 port and C2 port, the second spray box clamping and releasing solenoid valve B2 port and T2 port and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second spray box window control oil cylinder to move toward the rodless cavity, so as to realize the window opening function of the second spray box; When the second spray box clamping and releasing electromagnetic valve is in the upper position and the second spray box rubber core and the window function conversion ball valve are in the lower position, the P2 port and B2 port of the second spray box clamping and releasing electromagnetic valve, the C2 port and E2 port of the second spray box rubber core and the window function conversion ball valve, the G2 port and the rodless cavity of the second spray box window control oil cylinder are connected in sequence, the rod cavity and I2 port of the second spray box window control oil cylinder, the A2 port and T2 port of the second spray box clamping and releasing electromagnetic valve and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second spray box window control oil cylinder to move toward the rod cavity, thereby realizing the window closing function of the second spray box.

[0011] 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.

[0012] When the ball valve for switching the rubber core and the window function of the first spray preventer box or the ball valve for switching the rubber core and the window function of the second spray preventer box is turned, the function switching of the rubber core oil cylinder and the window oil cylinder of the first spray preventer box or the second spray preventer box can be realized. When the function switching of the rubber core oil cylinder or the window oil cylinder of the first spray preventer box or the second spray preventer box is completed, the clamping and loosening of the rubber core oil cylinder of the first spray preventer box or the second spray preventer box or the opening and closing of the window oil cylinder can be realized by controlling the clamping and loosening solenoid valve 1-1 of the first spray preventer box or the clamping and loosening solenoid valve 2-1 of the second spray preventer box.

[0013] A double-linked blowout preventer rubber core and window conversion control method, using the above-mentioned double-linked blowout preventer rubber core and window conversion control hydraulic system, hydraulic oil respectively enters the first blowout preventer clamping and releasing electromagnetic valve and the second blowout preventer clamping and releasing electromagnetic valve to form the following circuit; Blowout box-rubber core clamping circuit: When the hydraulic oil enters the P1 port of the spray preventer box clamping and releasing solenoid valve, at this time, operate the spray preventer box clamping and releasing solenoid valve to make the spray preventer box clamping and releasing solenoid valve in the upper position, then the liquid flows in from the P1 port of the spray preventer box clamping and releasing solenoid valve, flows out from the B1 port of the spray preventer box clamping and releasing solenoid valve, and then enters the C1 port of the spray preventer box rubber core and window function conversion ball valve, operate the spray preventer box rubber core and window function conversion ball valve to make the spray preventer box rubber core and window function conversion ball valve in the upper position, then the liquid flows from the spray preventer box. The liquid flows into the C1 port of the spray box clamping and releasing solenoid valve, flows out of the D1 port of the spray box rubber core and the window function conversion ball valve, and flows into the rodless cavity of the spray box rubber core control cylinder through the F1 port. At this time, the liquid flow in the rod cavity of the spray box rubber core control cylinder flows from the H1 port of the spray box rubber 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 rubber core control cylinder; Blowout prevention box - rubber core loosening circuit: When the hydraulic oil enters the P1 port of the spray box clamping and releasing solenoid valve, operate the spray box clamping and releasing solenoid valve at this time, so that the spray box clamping and releasing solenoid valve is in the lower position, and the liquid flows in from the P1 port of the spray box clamping and releasing solenoid valve, flows out from the A1 port of the spray box clamping and releasing solenoid valve, flows into the rod cavity through the H1 port of the spray box rubber core control cylinder, operates the spray box rubber core and the window function conversion ball valve, so that the spray box rubber core and the window function conversion ball valve are in the upper position, and the spray box 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, and then 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, and 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 release control function of the blowout preventer box-rubber core control cylinder; BOP box-window closing circuit: When the hydraulic oil enters the P1 port of the spray box clamping and releasing solenoid valve, at this time, operate the spray box clamping and releasing solenoid valve to make the spray box clamping and releasing solenoid valve in the upper position, then the liquid flows in from the P1 port of the spray box clamping and releasing solenoid valve, flows out from the B1 port of the spray box clamping and releasing solenoid valve, and then enters the C1 port of the spray box rubber core and window function conversion ball valve. At this time, operate the spray box rubber core and window function conversion ball valve to make the spray box rubber core and window function conversion ball valve in the lower position, then the liquid flows from the spray box The liquid flows into the C1 port of the blowout box-rubber core and the window function conversion ball valve, flows out of the E1 port of the blowout box-rubber core and the window function conversion ball valve, and flows into the rodless cavity through the G1 port of the blowout box-window control oil cylinder. At this time, the liquid flow in the rod cavity of the blowout box-window control oil cylinder flows from the I1 port of the blowout box-window control oil cylinder to the A1 port of the blowout box-clamping and releasing solenoid valve, and finally flows back to the hydraulic oil tank from the T1 port of the blowout box-clamping and releasing solenoid valve, thereby realizing the closing control function of the blowout box-window control oil cylinder; BOP box one window opening circuit: When the hydraulic oil enters the P1 port of the spray box clamping and releasing solenoid valve, the spray box clamping and releasing solenoid valve is operated at this time to make the spray box clamping and releasing solenoid valve in the lower position, and the liquid flows in from the P1 port of the spray box clamping and releasing solenoid valve, flows out from the A1 port of the spray box clamping and releasing solenoid valve, and flows into the rod cavity of the spray box window control cylinder through the I1 port. The spray box rubber core and the window function conversion ball valve are operated to make the spray box rubber core and the window function conversion ball valve in the lower position. At this time, the rodless cavity of the spray box window control cylinder The liquid flows out from the G1 port of the blowout box-window control oil cylinder and enters the E1 port of the blowout box-rubber core and window function conversion ball valve. The liquid flows from the E1 port of the blowout box-rubber core and window function conversion ball valve to the C1 port of the blowout box-rubber core and window function conversion ball valve, enters the B1 port of the blowout box-clamping and releasing solenoid valve through the C1 port of the blowout 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 box-clamping and releasing solenoid valve, thereby realizing the opening function of the blowout box-window control oil cylinder; The second rubber core clamping circuit of the spray-proof box: 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 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, 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 upper position, then the liquid flows from the blowout preventer box. Liquid flows into the C2 port of the spray box second clamping and releasing solenoid valve, flows out of the D2 port of the spray box second rubber core and the window function conversion ball valve, and flows into the rodless cavity through the F2 port of the spray box second rubber core control cylinder. At this time, the liquid flow in the rod cavity of the spray box second rubber core control cylinder flows from the H2 port of the spray box second rubber core control cylinder to the A2 port of the spray box second clamping and releasing solenoid valve, and finally flows back to the hydraulic oil tank from the T2 port of the spray box second clamping and releasing solenoid valve, thereby realizing the clamping control function of the spray box second rubber core control cylinder; The second rubber core release circuit of the spray-proof box: When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve of the spray preventer box, the second clamping and releasing solenoid valve of the spray preventer box is operated at this time to make the second clamping and releasing solenoid valve of the spray preventer box in the lower position, and the liquid flows in from the P2 port of the second clamping and releasing solenoid valve of the spray preventer box, and flows out from the A2 port of the second clamping and releasing solenoid valve of the spray preventer box, and flows into the rod cavity through the H2 port of the second rubber core of the spray preventer box to control the oil cylinder, and the second rubber core of the spray preventer box and the window function conversion ball valve are operated to make the second rubber core of the spray preventer box and the window function conversion ball valve in the upper position. At this time, the second rubber core of the spray 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, and 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; BOP box second window closing circuit: 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 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, flows out of the E2 port of the second rubber core of the blowout 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 box. At this time, the liquid flow in the rod cavity of the second window control oil cylinder of the blowout box flows from the I2 port of the second window control oil cylinder of the blowout box to the A2 port of the second clamping and releasing solenoid valve 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 of the blowout box, thereby realizing the closing control function of the second window control oil cylinder of the blowout box; Blowout box second window opening circuit: When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve of the spray preventer box, the second clamping and releasing solenoid valve of the spray preventer box is operated at this time to make the second clamping and releasing solenoid valve of the spray preventer box in the lower position, and the liquid flows in from the P2 port of the second clamping and releasing solenoid valve of the spray preventer box, flows out from the A2 port of the second clamping and releasing solenoid valve of the spray preventer box, and flows into the rod cavity through the I2 port of the second window control oil cylinder of the spray preventer box. The second rubber core and the window function conversion ball valve of the spray preventer box are operated to make the second rubber core and the window function conversion ball valve of the spray preventer box in the lower position. At this time, the rodless cavity of the second window control oil cylinder of the spray preventer box The liquid flows out from the G2 port of the second window control cylinder of the blowout preventer box, enters the E2 port of the second rubber core and the window function conversion ball valve of the blowout preventer box, and then flows from the E2 port of the second rubber core and the window function conversion ball valve of the blowout preventer box to the C2 port of the second rubber core and the 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 the 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.

[0014] 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 rubber core clamping and loosening functions of the double blowout preventer boxes and the window opening and closing functions can be quickly switched through the control valve group integrated on the double blowout preventer boxes without plugging in or out the control pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the hydraulic power transmission route of the present invention; Figure 2 This is a schematic diagram of the internal hydraulic pressure of the valve group of the present invention; In the figure: Blowout preventer box 1 clamping and releasing solenoid valve 1-1, Blowout preventer box 1 rubber core and window function conversion ball valve 1-2, Blowout preventer box 1 rubber core control cylinder 1-3, Blowout preventer box 1 window control cylinder 1-4, Blowout preventer box 2 clamping and releasing solenoid valve 2-1, Blowout preventer box 2 rubber core and window function conversion ball valve 2-2, Blowout preventer box 2 rubber core control cylinder 2-3, Blowout preventer box 2 window control cylinder 2-4. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: See attached Figure 1 and 2 This embodiment provides a hydraulic system for double blowout preventer box rubber core and window conversion control, and a blowout preventer box first clamping and releasing solenoid valve 1-1, a blowout preventer box first rubber core and window function conversion ball valve 1-2, a blowout preventer box second clamping and releasing solenoid valve 2-1 and a blowout preventer box second rubber core and window function conversion ball valve 2-2 are integrated and installed on the valve group body; 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 corresponds to the rod chamber of the rubber core control cylinder 1-3 of the blowout box and the window control cylinder 1-4 of the blowout box, and the B1 port of the clamping and releasing solenoid valve 1-1 of the blowout box is connected to the rubber core of the blowout box and the window function conversion ball valve 1-2. The C1 port, the D1 port of the blowout box 1 rubber core and the window function conversion ball valve 1-2 are connected to the rodless chamber of the blowout box 1 rubber core control oil cylinder 1-3, and the E1 port of the blowout box 1 rubber core and the window function conversion ball valve 1-2 are connected to the rodless chamber of the blowout box 1 window control oil cylinder 1-4; the blowout box 1 clamping and releasing solenoid valve 1-1 and the blowout box 1 rubber core and the window function conversion ball valve 1-2 work together to realize the clamping and releasing of the blowout box 1 rubber core and the opening and closing of the window; 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 corresponds to the rod chamber connected to 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 preventer box and the window function conversion ball valve 2-2 are connected to the rodless chamber of the second rubber core of the blowout preventer box to control the oil cylinder 2-3, and the E2 port of the second rubber core of the blowout preventer 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 preventer box; the second clamping and releasing solenoid valve 2-1 of the blowout preventer box and the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2 work together to realize the clamping and releasing of the rubber core of the second blowout preventer box and the opening and closing of the window.

[0017] When the spray box clamping and releasing solenoid valve 1-1 and the spray 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 spray box clamping and releasing solenoid valve 1-1, the C1 port and the D1 port of the spray box rubber core and window function conversion ball valve 1-2, the F1 port and the rodless cavity of the spray box rubber core control cylinder 1-3 are connected in sequence, the rod cavity and the H1 port of the spray box rubber core control cylinder 1-3, the A1 port and the T1 port of the spray 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 spray box rubber core control cylinder 1-3 to move toward the rod cavity, so as to realize the spray box rubber core clamping function; When the spray box clamping and releasing electromagnetic valve 1-1 is in the lower position and the spray box rubber core and window function conversion ball valve 1-2 are in the upper position, the P1 port and A1 port of the spray box clamping and releasing electromagnetic valve 1-1, the H1 port and the rod cavity of the spray box rubber core control oil cylinder 1-3 are connected in sequence, the rodless cavity and F1 port of the spray box rubber core control oil cylinder 1-3, the D1 port and C1 port of the spray box rubber core and window function conversion ball valve 1-2, the B1 port and T1 port of the spray 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 spray box rubber core control oil cylinder 1-3 to move toward the rodless cavity, so as to realize the spray box rubber core releasing function; When the spray box clamping and releasing solenoid valve 1-1 and the spray 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 spray box clamping and releasing solenoid valve 1-1, the I1 port and the rod cavity of the spray box window control oil cylinder 1-4 are connected in sequence, the rodless cavity and the G1 port of the spray box window control oil cylinder 1-4, the E1 port and the C1 port of the spray box rubber core and the window function conversion ball valve 1-2, the B1 port and the T1 port of the spray 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 spray box window control oil cylinder 1-4 to move toward the rodless cavity, so as to realize the window opening function of the spray box; When the spray box clamping and releasing electromagnetic valve 1-1 is in the upper position and the spray box rubber core and window function conversion ball valve 1-2 are in the lower position, the P1 port and B1 port of the spray box clamping and releasing electromagnetic valve 1-1, the C1 port and E1 port of the spray box rubber core and window function conversion ball valve 1-2, the G1 port and the rodless cavity of the spray box window control oil cylinder 1-4 are connected in sequence, the rod cavity and I1 port of the spray box window control oil cylinder 1-4, the A1 port and T1 port of the spray 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 spray box window control oil cylinder 1-4 to move toward the rod cavity, thereby realizing the window closing function of the spray box.

[0018] When the second spray box clamping and releasing solenoid valve 2-1 and the second spray box rubber core and window function conversion ball valve 2-2 are both in the upper position, the P2 port and B2 port of the second spray box clamping and releasing solenoid valve 2-1, the C2 port and D2 port of the second spray box rubber core and window function conversion ball valve 2-2, the F2 port and the rodless cavity of the second spray box rubber core control cylinder 2-3 are connected in sequence, the rod cavity and the H2 port of the second spray box rubber core control cylinder 2-3, the A2 port and the T2 port of the second spray box clamping and releasing solenoid valve 2-1 and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second spray box rubber core control cylinder 2-3 to move toward the rod cavity, thereby realizing the second spray box rubber core clamping function; When the second spray box clamping and releasing solenoid valve 2-1 is in the lower position and the second spray box rubber core and the window function conversion ball valve 2-2 are in the upper position, the P2 port and the A2 port of the second spray box clamping and releasing solenoid valve 2-1, the H2 port and the rod cavity of the second spray box rubber core control cylinder 2-3 are connected in sequence, the rodless cavity and the F2 port of the second spray box rubber core control cylinder 2-3, the D2 port and the C2 port of the second spray box rubber core and the window function conversion ball valve 2-2, the B2 port and the T2 port of the second spray box clamping and releasing solenoid valve 2-1 and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second spray box rubber core control cylinder 2-3 to move toward the rodless cavity, so as to realize the rubber core release function of the second spray box; When the second spray box clamping and releasing solenoid valve 2-1 and the second spray box rubber core 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 spray box clamping and releasing solenoid valve 2-1, the I2 port and the rod cavity of the second spray box window control oil cylinder 2-4 are connected in sequence, the rodless cavity and the G2 port of the second spray box window control oil cylinder 2-4, the E2 port and the C2 port of the second spray box rubber core and the window function conversion ball valve 2-2, the B2 port and the T2 port of the second spray box clamping and releasing solenoid valve 2-1 and the hydraulic oil tank are connected in sequence, and the liquid flow pushes the piston of the second spray box window control oil cylinder 2-4 to move toward the rodless cavity, thereby realizing the window opening function of the second spray box; When the second spray box clamping and releasing electromagnetic valve 2-1 is in the upper position and the second spray box rubber core and the window function conversion ball valve 2-2 are in the lower position, the P2 port and the B2 port of the second spray box clamping and releasing electromagnetic valve 2-1, the C2 port and the E2 port of the second spray box rubber core and the window function conversion ball valve 2-2, the G2 port and the rodless cavity of the second spray box window control oil cylinder 2-4 are connected in sequence, the rod cavity and the I2 port of the second spray box window control oil cylinder 2-4, the A2 port and the T2 port of the second spray 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 spray box window control oil cylinder 2-4 to move toward the rod cavity, thereby realizing the window closing function of the second spray box.

[0019] 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.

[0020] In this embodiment, hydraulic power is provided to the first spray box clamping and releasing electromagnetic valve 1-1 and the second spray box clamping and releasing electromagnetic valve 2-1 through the first spray box manual ball valve and the second spray box manual ball valve originally installed in the control room. The P1 port of the first spray box clamping and releasing electromagnetic valve 1-1 is connected with the first spray box manual ball valve in the control room, and the hydraulic system provides hydraulic oil to the first spray box clamping and releasing electromagnetic valve 1-1 through the first spray box manual ball valve; the P2 port of the second spray box clamping and releasing electromagnetic valve 2-1 is connected with the second spray box manual ball valve in the control room, and the hydraulic system provides hydraulic oil to the second spray box clamping and releasing electromagnetic valve 2-1 through the second spray box manual ball valve.

[0021] A double-linked blowout preventer rubber core and window conversion control method, using the above-mentioned double-linked blowout preventer rubber core and window conversion control hydraulic system, hydraulic oil respectively enters the blowout preventer first clamping and releasing electromagnetic valve 1-1 and the blowout preventer second clamping and releasing electromagnetic valve 2-1 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, 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 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 cylinder 1-3 through the F1 port. At this time, the liquid flow 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; Blowout prevention box - rubber core loosening circuit: When the hydraulic oil enters the P1 port of the spray box clamping and releasing solenoid valve 1-1, the spray box clamping and releasing solenoid valve 1-1 is operated at this time, so that the spray box clamping and releasing solenoid valve 1-1 is in the lower position, and the liquid flows in from the P1 port of the spray box clamping and releasing solenoid valve 1-1, flows out from the A1 port of the spray box clamping and releasing solenoid valve 1-1, and flows into the rod cavity of the spray box rubber core control cylinder 1-3 through the H1 port, operates the spray box rubber core and the window function conversion ball valve 1-2, so that the spray box rubber core and the window function conversion ball valve 1-2 are in the upper position, and the spray box rubber core control cylinder 1 -3, the liquid flow in the rodless chamber flows out from the F1 port, enters the D1 port of the blowout box-a rubber core and the window function conversion ball valve 1-2, and then flows from the D1 port of the blowout box-a rubber core and the window function conversion ball valve 1-2 into the C1 port of the blowout box-a rubber core and the window function conversion ball valve 1-2, enters the B1 port of the blowout box-a clamping and releasing solenoid valve 1-1 through the C1 port of the blowout box-a rubber core and the window function conversion ball valve 1-2, 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 release control function of the blowout box-a rubber core control cylinder 1-3; BOP box-window closing circuit: When the hydraulic oil enters the P1 port of the spray box clamping and releasing solenoid valve 1-1, the spray box clamping and releasing solenoid valve 1-1 is operated at this time, so that the spray box clamping and releasing solenoid valve 1-1 is in the upper position, and the liquid flows in from the P1 port of the spray box clamping and releasing solenoid valve 1-1, flows out from the B1 port of the spray box clamping and releasing solenoid valve 1-1, and then enters the C1 port of the spray box rubber core and the window function conversion ball valve 1-2, and the spray box rubber core and the window function conversion ball valve 1-2 are operated at this time, so that the spray box rubber core and the window function conversion ball valve 1-2 are in the lower position, and the liquid flows from the spray 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 through the G1 port of the blowout box-a window control oil cylinder 1-4. 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 one window opening circuit: When the hydraulic oil enters the P1 port of the spray box clamping and releasing solenoid valve 1-1, the spray box clamping and releasing solenoid valve 1-1 is operated at this time, so that the spray box clamping and releasing solenoid valve 1-1 is in the lower position, and the liquid flows in from the P1 port of the spray box clamping and releasing solenoid valve 1-1, flows out from the A1 port of the spray box clamping and releasing solenoid valve 1-1, and flows into the rod cavity of the spray box window control cylinder 1-4 through the I1 port, and operates the spray box rubber core and the window function conversion ball valve 1-2, so that the spray box rubber core and the window function conversion ball valve 1-2 are in the lower position, and the spray box window control cylinder 1-4 rodless cavity The liquid flow in the blowout box flows out from the G1 port of the blowout box-window control oil cylinder 1-4, enters the E1 port of the blowout box-rubber core and window function conversion ball valve 1-2, and 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; The second rubber core clamping circuit of the spray-proof box: When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, at this time, operate the second clamping and releasing solenoid valve 2-1 of the blowout preventer box, 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, 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 upper position, then the liquid flows 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 through the F2 port of the spray box second rubber core control cylinder 2-3. At this time, the liquid flow 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; The second rubber core release circuit of the spray-proof box: When the hydraulic oil enters the P2 port of the second clamping and releasing solenoid valve 2-1 of the spray preventer box, the second clamping and releasing solenoid valve 2-1 of the spray preventer box is operated at this time, so that the second clamping and releasing solenoid valve 2-1 of the spray 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 spray preventer box, flows out from the A2 port of the second clamping and releasing solenoid valve 2-1 of the spray preventer box, and flows into the rod cavity of the spray preventer box second rubber core control cylinder 2-3 through the H2 port, operates the second rubber core of the spray preventer box and the window function conversion ball valve 2-2, so that the second rubber core of the spray preventer box and the window function conversion ball valve 2-2 are in the upper position, and at this time the second rubber core of the spray preventer box controls the oil cylinder 2 -3, the liquid flow in the rodless chamber flows out from the F2 port, enters the D2 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 D2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2 to the C2 port of the second rubber core of the blowout preventer box and the window function conversion ball valve 2-2, and 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 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; 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 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 to the C2 port of the blowout preventer box. The liquid flows into the C2 port of the second rubber core of the spray box and the window function conversion ball valve 2-2, flows out of the E2 port of the second rubber core of the spray box and the window function conversion ball valve 2-2, and flows into the rodless cavity through the G2 port of the second window control oil cylinder 2-4 of the spray box. At this time, the liquid flow in the rod cavity of the second window control oil cylinder 2-4 of the spray box flows from the I2 port of the second window control oil cylinder 2-4 of the spray box to the A2 port of the second clamping and releasing solenoid valve 2-1 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 2-1 of the spray box, thereby realizing the closing control function of the second window control oil cylinder 2-4 of the spray box; Blowout 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 spray preventer box, the second clamping and releasing solenoid valve 2-1 of the spray preventer box is operated at this time, so that the second clamping and releasing solenoid valve 2-1 of the spray 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 spray preventer box, flows out from the A2 port of the second clamping and releasing solenoid valve 2-1 of the spray preventer box, and flows into the rod cavity through the I2 port of the second window control cylinder 2-4 of the spray preventer box, and operates the second rubber core of the spray preventer box and the window function conversion ball valve 2-2, so that the second rubber core of the spray preventer box and the window function conversion ball valve 2-2 are in the lower position, and the rodless cavity of the second window control cylinder 2-4 of the spray preventer box is controlled at this time. The liquid flow in the blowout box flows out from the G2 port of the second window control oil cylinder 2-4 of the blowout box, enters the E2 port of the second rubber core of the blowout 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 box and the window function conversion ball valve 2-2 to the C2 port of the second rubber core of the blowout box and the window function conversion ball valve 2-2, enters the B2 port of the second clamping and releasing electromagnetic valve 2-1 of the blowout box through the C2 port of the second rubber core of the blowout 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 electromagnetic valve 2-1 of the blowout box, thereby realizing the opening function of the second window control oil cylinder 2-4 of the blowout box.

[0022] In this embodiment: Four function selection nameplates (hereinafter referred to as nameplates) are arranged on the valve group body, namely nameplates one to four. Nameplates one and two are respectively arranged 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 arranged on both sides of the blowout preventer box two rubber core and the window function conversion ball valve 2-2.

[0023] Nameplate 1 may be written with words such as "sprayproof box 1 rubber core" or "sprayproof box 1 rubber core", corresponding to the upper position (rubber core control position) of the sprayproof box 1 rubber core and the window function conversion ball valve 1-2. Nameplate 2 may be written with words such as "sprayproof box 1 window" or "sprayproof box 1 window", corresponding to the lower position (window control position) of the sprayproof box 1 rubber core and the window function conversion ball valve 1-2. By rotating the handle of the sprayproof box 1 rubber core and the window function conversion ball valve 1-2 to nameplate 1 or nameplate 2, you can choose to control the execution action of the sprayproof box 1 rubber core control cylinder 1-3 or the sprayproof box 1 window control cylinder 1-4. Regardless of whether the sprayproof box 1 rubber core control cylinder 1-3 or the sprayproof box 1 window control cylinder 1-4 is selected for execution, their action control is controlled by the sprayproof box 1 clamping and releasing solenoid valve 1-1.

[0024] Nameplate three may be written with words such as "sprayproof box two rubber core" or "sprayproof box two rubber core", corresponding to the upper position (rubber core control position) of the sprayproof box two rubber core and the window function conversion ball valve 2-2. Nameplate four may be written with words such as "sprayproof box two window" or "sprayproof box two window", corresponding to the lower position (window control position) of the sprayproof box two rubber core and the window function conversion ball valve 2-2. By rotating the handle of the sprayproof box two rubber core and the window function conversion ball valve 2-2 to nameplate three or nameplate four, the sprayproof box two rubber core and the window function conversion ball valve 2-2 can choose to control the execution action of the sprayproof box two rubber core control cylinder 2-3 or the sprayproof box two window control cylinder 2-4. Regardless of whether the sprayproof box two rubber core control cylinder 2-3 or the sprayproof box two window control cylinder 2-4 is selected to execute the action, their action control is controlled by the sprayproof box two clamping and releasing solenoid valve 2-1.

[0025] Example: When the rotation control handle of the blowout box-rubber core and the window function conversion ball valve 1-2 points to the nameplate of the blowout box-window control oil cylinder 1-4, the blowout box-clamping and releasing solenoid valve 1-1 is operated at this time to realize the clamping and releasing of the blowout box-window control oil cylinder 1-4.

[0026] 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.

[0027] Same reason When the rotation control handle of the second blowout box rubber core and the window function conversion ball valve 2-2 points to the nameplate of the second blowout box window control cylinder 2-4, the second blowout box clamping and releasing solenoid valve 2-1 is operated to achieve the clamping and releasing of the second blowout box window control cylinder 2-4.

[0028] 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.

[0029] In this embodiment, the hydraulic component models and manufacturers are as follows: Blowout prevention box - clamping and releasing solenoid valve 1-1 Swiss Wandfluh, Wandfluh series valve group; Blowout prevention box, rubber core and window function conversion ball valve 1-2 American HOKE F series valve group; Blowout prevention box-rubber core control cylinder 1-3 imported brand, STONE series; Blowout prevention box-window control cylinder 1-4 imported brand, STONE series; Blowout prevention box 2 clamping and releasing solenoid valve 2-1 Swiss Wandflul, Wandflul series valve group; Blowout prevention box two rubber core and window function conversion ball valve 2-2 American HOKE F series valve group; Blowout prevention box two rubber core control cylinder 2-3 imported brand, STONE series; Blowout prevention box two-window control cylinder 2-4 imported brand, STONE series.

[0030] The present invention is used to integrate and install a blowout box clamping and releasing electromagnetic valve 1-1, a blowout box rubber core and window function conversion ball valve 1-2, a blowout box second clamping and releasing electromagnetic valve 2-1 and a blowout box second rubber core and window function conversion ball valve 2-2 on the valve group body to form a control valve group. The control valve group is fixed to the blowout box body in a hard connection manner, and the hydraulic system can be controlled on site through the control valve group to perform function conversion. Compared with the traditional solution, the complex peripheral circuit is omitted, the layout is compact, and the cost is reduced. It can meet the selection and switching of the continuous tubing blowout box rubber core and the blowout box window execution action.

Claims

1. A hydraulic system for controlling the conversion of a double blowout prevention box rubber core and a window, characterized in that: 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) corresponds 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 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 1 rubber core and the window function conversion ball valve (1-2) is connected to the rodless chamber of the blowout box 1 rubber core control oil cylinder (1-3), and the E1 port of the blowout box 1 rubber core and the window function conversion ball valve (1-2) is connected to the rodless chamber of the blowout box 1 window control oil cylinder (1-4); the blowout box 1 clamping and releasing solenoid valve (1-1) and the blowout box 1 rubber core and the window function conversion ball valve (1-2) work together to achieve the clamping and releasing of the blowout box 1 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 preventer box is connected to the hydraulic oil, and the T2 port of the second clamping and releasing electromagnetic valve (2-1) of the blowout preventer box is connected to the hydraulic oil tank; the A2 port of the second clamping and releasing electromagnetic valve (2-1) of the blowout preventer box corresponds to the rod chamber of the second rubber core control cylinder (2-3) of the blowout preventer box and the second window control cylinder (2-4) of the blowout preventer box, and the B2 port of the second clamping and releasing electromagnetic valve (2-1) of the blowout preventer box is connected to the second rubber core of the blowout preventer 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 achieve 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 double blowout preventer rubber core and window according to claim 1, characterized in that: When the spray box clamping and releasing electromagnetic valve (1-1) and the spray 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 spray box clamping and releasing electromagnetic valve (1-1), the C1 port and the D1 port of the spray box rubber core and window function conversion ball valve (1-2), the F1 port and the rodless cavity of the spray box rubber core control oil cylinder (1-3) are connected in sequence, the rod cavity and the H1 port of the spray box rubber core control oil cylinder (1-3), the A1 port and the T1 port of the spray 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 spray box rubber core control oil cylinder (1-3) to move in the direction of the rod cavity, thereby realizing the spray box rubber core clamping function; When the spray box clamping and releasing electromagnetic valve (1-1) is in the lower position and the spray 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 spray box clamping and releasing electromagnetic valve (1-1), the H1 port and the rod chamber of the spray box rubber core control oil cylinder (1-3) are connected in sequence, the rodless chamber and the F1 port of the spray box rubber core control oil cylinder (1-3), the D1 port and the C1 port of the spray box rubber core and window function conversion ball valve (1-2), the B1 port and the T1 port of the spray 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 spray box rubber core control oil cylinder (1-3) to move in the direction of the rodless chamber, so as to realize the spray box rubber core release function; When the spray box clamping and releasing electromagnetic valve (1-1) and the spray box rubber core and window function conversion ball valve (1-2) are both in the lower position, the P1 port and the A1 port of the spray box clamping and releasing electromagnetic valve (1-1), the I1 port and the rod chamber of the spray box window control oil cylinder (1-4) are connected in sequence, the rodless chamber and the G1 port of the spray box window control oil cylinder (1-4), the E1 port and the C1 port of the spray box rubber core and the window function conversion ball valve (1-2), the B1 port and the T1 port of the spray 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 spray box window control oil cylinder (1-4) to move in the direction of the rodless chamber, thereby realizing the window opening function of the spray box; When the spray box clamping and releasing electromagnetic valve (1-1) is in the upper position and the spray 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 spray box clamping and releasing electromagnetic valve (1-1), the C1 port and the E1 port of the spray box rubber core and window function conversion ball valve (1-2), the G1 port and the rodless cavity of the spray box window control oil cylinder (1-4) are connected in sequence, the rod cavity and the I1 port of the spray box window control oil cylinder (1-4), the A1 port and the T1 port of the spray 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 spray box window control oil cylinder (1-4) to move in the direction of the rod cavity, thereby realizing the window closing function of the spray box.

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

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