An electronically controlled hydraulic locking system based on a high-pressure water tank

Abstract

The present invention relates to an electronically controlled hydraulic locking system based on a high-pressure water tank. The electronically controlled hydraulic locking system is a reliable guarantee module system designed based on the high-pressure water tank, including: a working pump end; a cover hydraulic circuit; a locking ring hydraulic circuit, wherein the working oil port of the positioning directional valve is also connected between the throttle valve and the oil inlet of the directional valve; a flow control circuit. In the electronically controlled hydraulic locking system of the present invention, there is a secondary oil circuit between the positioning directional valve and the directional valve, as well as a positioning pin, which has a dual safety function; at the same time, the hydraulic check valve and the hydraulic lock respectively perform oil cylinder sealing for the cover oil cylinder and the locking ring oil cylinder to ensure reliable operation; the provided one-way throttle valve cooperates with the flow control circuit to enable speed adjustment of this part of the transmission during the locking process, making the operation stable and reliable.

Description

Technical Field

[0001] The present invention relates to a hydraulic locking technology, and in particular to an electrically controlled hydraulic locking system based on a high-pressure water tank. Background Art

[0002] The high-pressure water tank is a special high-pressure equipment with a large pressure-bearing area and a relatively high cross-sectional pressure on the overall tank cover. Most existing solutions rely on passive pressure sealing and rely on the assembly and cooperation between components to achieve locking and sealing. However, the service life of the seal is short and the reliability needs to be tested frequently. Therefore, we continue to design a locking system that is easy to use and reliable in operation. Summary of the invention

[0003] To solve the above technical problems, the present invention provides an electronically controlled hydraulic locking system based on a high-pressure water tank. The electronically controlled hydraulic locking system is a reliable protection module system designed based on the high-pressure water tank, comprising:

[0004] The working pump end is equipped with a pump 1, a relief valve 2, a plate-type ball valve 3, and a pressure gauge 4. The oil inlet of the pump 1 and one end of the oil outlet of the relief valve 2 are both equipped with oil tanks, and the oil outlet of the pump 1 is provided with three branches, the first branch being connected to the oil inlet of the relief valve 2, and the second branch being connected to the plate-type ball valve 3 and the pressure gauge 4;

[0005] The tank cover hydraulic circuit includes a positioning reversing valve 6, a one-way throttle valve 8, a hydraulically controlled one-way valve 9, a safety valve 10, and a tank cover cylinder 12, wherein the oil inlet of the positioning reversing valve 6 is connected to the third branch of the pump 1, the one-way throttle valve 8, the hydraulically controlled one-way valve 9, the tank cover cylinder 12 and the positioning reversing valve 6 are connected in series in sequence between the working oil port of the left working position, and the safety valve 10 is arranged between the hydraulically controlled one-way valve 9 and the oil tank; a positioning pin is also provided between the working oil port of the positioning reversing valve 6 and the reversing valve 7, and the locking ring can only be operated when the positioning pin is pulled out to prevent the locking ring from working first and damaging the pin component due to malfunction.

[0006] The locking ring hydraulic circuit includes a throttle valve 5, a reversing valve 7, a hydraulic lock 11, and a locking ring cylinder 13. The working oil port of the positioning reversing valve 6 is also connected to the oil inlet of the reversing valve 7 through the throttle valve 5. At the same time, the working oil port of the reversing valve 7 in the left working position is connected to the hydraulic lock 11 and the locking ring cylinder 13 in sequence.

[0007] The flow control circuit includes a flow sensor transmitter 14, a frequency converter, and a PLC controller 15. The flow sensor transmitter 14 is arranged at the oil inlet end of the throttle valve 5. The pump 1 is also integrated with a frequency converter. The PLC controller 15 is provided with a control circuit with the flow sensor transmitter 14 and the frequency converter respectively.

[0008] In one embodiment of the present invention, the safety valve 10 is connected to the fuel tank, and the excess pressure in the oil circuit is discharged through the safety valve 10, enabling each valve body and fuel tank component in the oil circuit to relieve the excess pressure.

[0009] In one embodiment of the present invention, the throttle valve 5 adjusts the working speed of the locking ring by controlling the size of its throttle orifice.

[0010] In one embodiment of the present invention, discrete PID control is adopted in the PLC controller 15. The flow sensing transmitter 14 measures the flow rate and velocity as the controlled object, and the rotational speed finally output by the drive pump 1 is the control variable.

[0011] The above technical solution of the present invention has the following advantages compared with the prior art: In the electro-hydraulic locking system of the present invention, there is a secondary oil circuit between the positioning directional valve and the directional valve, as well as a positioning pin, which has a dual safety function; at the same time, the hydraulic check valve and the hydraulic lock respectively seal the cylinder for the tank cover cylinder and the locking ring cylinder to ensure reliable operation; the one-way throttle valve provided can adjust the speed of this part of the transmission during the locking process, making the operation stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to make the content of the present invention easier to be clearly understood, the present invention will be further described in detail below in accordance with specific embodiments of the present invention and in conjunction with the drawings.

[0013] Figure 1 is a schematic hydraulic principle diagram of the electro-hydraulic locking system of the present invention;

[0014] Figure 2 is a schematic external view of the high-pressure water tank of the present invention.

[0015] As shown in the figure: 1. Pump, 2. Relief valve, 3. Plate ball valve, 4. Pressure gauge, 5. Throttle valve, 6. Positioning directional valve, 7. Directional valve, 8. One-way throttle valve, 9. Hydraulic check valve, 10. Safety valve, 11. Hydraulic lock, 12. Tank cover cylinder, 13. Locking ring cylinder, 14. Flow sensing transmitter, 15. PLC controller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] As Figure 1 and Figure 2 shown, this embodiment provides an electro-hydraulic locking system based on a high-pressure water tank. The electro-hydraulic locking system is a reliable guarantee module system designed based on the high-pressure water tank, including:

[0017] At the working pump end, there are a pump 1, a relief valve 2, a plate ball valve 3, and a pressure gauge 4. One end of the inlet of the pump 1 and the outlet of the relief valve 2 are both provided with a fuel tank, and the outlet of the pump 1 has three branches. The first branch is connected to the inlet of the relief valve 2, and the second branch is connected to the plate ball valve 3 and the pressure gauge 4;

[0018] The hydraulic circuit of the cover includes a positioning directional control valve 6, a one-way throttle valve 8, a pilot-operated check valve 9, a safety valve 10, and a cover cylinder 12. The inlet of the positioning directional control valve 6 is connected to the third branch of the pump 1. The one-way throttle valve 8, the pilot-operated check valve 9, and the cover cylinder 12 are connected in series in turn between the working oil ports of the positioning directional control valve 6 in the left working position, and the safety valve 10 is arranged between the pilot-operated check valve 9 and the fuel tank;

[0019] The hydraulic circuit of the locking ring includes a throttle valve 5, a directional control valve 7, a hydraulic lock 11, and a locking ring cylinder 13. The working oil port of the positioning directional control valve 6 is also connected to the inlet of the directional control valve 7 through the throttle valve 5. At the same time, the working oil ports of the directional control valve 7 in the left working position are connected to the hydraulic lock 11 and the locking ring cylinder 13 in turn;

[0020] The flow control circuit includes a flow sensor transmitter 14, a frequency converter, and a PLC controller 15. The flow sensor transmitter 14 is arranged at the inlet end of the throttle valve 5. At the same time, the pump 1 is also integrated with a frequency converter, and a control circuit is provided between the PLC controller 15 and the flow sensor transmitter 14 and the frequency converter respectively.

[0021] The principle of the electro-hydraulic locking system described in this embodiment: Start the pump 1 to drive the directional control valve 6 to be in the left working position. The hydraulic oil enters the right side of the cover cylinder 12 through the one-way throttle valve 8 and the pilot-operated check valve 9, driving the plug to be pulled out of the positioning jack; at the same time, the hydraulic oil enters the inlet of the directional control valve 7 through the working oil port of the positioning directional control valve 6 and the throttle valve 5, driving the reversing handle of the directional control valve 7 to make the hydraulic oil enter the left or right inlet of the locking ring cylinder 13 through the hydraulic lock 11, respectively realizing the locking and opening operations of the cover locking ring.

[0022] At the same time, a flow control circuit is provided, and the PLC controller 15 is used to further control the flow rate and flow in the system, so that the actions of the cover cylinder 12 and the locking ring cylinder 13 can be controlled carefully and accurately.

[0023] A positioning pin is also provided between the working oil port of the positioning directional control valve 6 and the directional control valve 7. Only when the positioning pin is pulled out can the locking ring work, preventing damage to the plug components caused by misoperation leading to the prior operation of the locking ring.

[0024] The safety valve 10 is connected to the fuel tank, and the excess pressure of each valve body and fuel tank component in the oil circuit is relieved through the safety valve 10.

[0025] The throttle valve 5 adjusts the working speed of the locking ring by controlling the size of its throttle orifice.

[0026] The PLC controller 15 adopts discrete PID control. The flow sensing transmitter 14 in it measures the flow rate and flow velocity as the controlled object, and the rotational speed finally output by the driving pump 1 is the control quantity.

[0027] Obviously, the above embodiments are merely examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An electronically controlled hydraulic locking system based on a high-pressure water tank, the electronically controlled hydraulic locking system being a reliable guarantee module system designed based on the high-pressure water tank, characterized in that, Including: The working pump end is provided with a pump (1), a relief valve (2), a plate ball valve (3), and a pressure gauge (4). An oil tank is provided at one end of the oil inlet of the pump (1) and the oil outlet of the relief valve (2). The oil outlet of the pump (1) has three branches. The first branch is connected to the oil inlet of the relief valve (2), and the second branch is connected to the plate ball valve (3) and the pressure gauge (4). The cover hydraulic circuit includes a positioning directional valve (6), a one-way throttle valve (8), a pilot-operated check valve (9), a safety valve (10), and a cover oil cylinder (12). The oil inlet of the positioning directional valve (6) is connected to the third branch of the pump (1). The one-way throttle valve (8), the pilot-operated check valve (9), and the cover oil cylinder (12) are sequentially connected in series between the working oil ports of the positioning directional valve (6) in the left working position. The safety valve (10) is provided between the pilot-operated check valve (9) and the oil tank. A positioning pin is also provided between the working oil port of the positioning directional valve (6) and the directional valve (7). The locking ring hydraulic circuit includes a throttle valve (5), a directional valve (7), a hydraulic lock (11), and a locking ring oil cylinder (13). The working oil port of the positioning directional valve (6) is also connected to the oil inlet of the directional valve (7) through the throttle valve (5). At the same time, the working oil ports of the directional valve (7) in the left working position are sequentially connected to the hydraulic lock (11) and the locking ring oil cylinder (13). The flow control circuit includes a flow sensor transmitter (14), a frequency converter, and a PLC controller (15). The flow sensor transmitter (14) is provided at the oil inlet end of the throttle valve (5). At the same time, the pump (1) is also integrated with a frequency converter. A control circuit is provided between the PLC controller (15) and the flow sensor transmitter (14) and the frequency converter respectively.

2. The electro-hydraulic locking system according to claim 1, characterized in that: The safety valve (10) is connected to the oil tank, and the excess pressure of each valve body and oil tank component in the oil circuit is relieved through the safety valve (10).

3. The electro-hydraulic locking system according to claim 1, wherein: The throttle valve (5) adjusts the working speed of the locking ring by controlling the size of its throttle orifice.

4. The electro-hydraulic locking system according to claim 1, wherein: The PLC controller (15) adopts discrete PID control, where the flow and flow rate measured by the flow sensor transmitter (14) are the controlled objects, and the rotational speed finally output by driving the pump (1) is the control quantity.

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