Marine closed steering engine main control valve group

Abstract

The utility model discloses a marine closed steering engine main control valve group. The valve group comprises a valve block, and a special steering engine balance valve, an overflow valve, a one-way valve, a safety valve and a plate type ball valve which are arranged on the valve block, the balance valve, the overflow valve, the one-way valve, the safety valve and the plate type ball valve special for the steering engine are communicated with one another through hole channels in the valve block, the valve block further comprises a plurality of oil ports, the closed hydraulic system is connected with the valve block through the oil ports, and the valve set integrates the control function of the hydraulic steering engine and has the advantages of being high in integration degree, simple in structure, stable in action, high in reliability and the like. And stable operation of the steering engine in a marine environment is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship construction machinery, and relates to a hydraulic valve group, in particular to a main control valve group for a marine closed-loop steering gear. Background Art

[0002] The steering gear is an important device of a ship, mainly used to maintain and change the course of the ship. Conventional marine steering gear hydraulic systems are divided into open systems and closed systems. Compared with the open system, the closed system has higher efficiency and fewer hydraulic components. The traditional closed-loop system steering gear has poor stability and reliability. Especially under the action of ocean waves, the load instability causes the steering gear to operate unstably, and the special balance valve for the steering gear is installed separately from the control valve group. Therefore, the main control valve group of the closed-loop steering gear has disadvantages such as low integration, complex structure, easy jitter in operation, and poor reliability. Summary of the Utility Model

[0003] Aiming at the above problems, the main purpose of the utility model is to design a main control valve group for a marine closed-loop steering gear, and solve the technical problems such as low integration, complex structure, easy jitter in operation, and poor reliability existing in the main control valve group of the closed-loop steering gear during use.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A main control valve group for a marine closed-loop steering gear is used for a closed-loop hydraulic system. The closed-loop hydraulic system includes a closed-loop hydraulic pump, an auxiliary pump, a steering gear mechanical body, a servo control system and an oil tank. The valve group includes a valve block, and a special balance valve for the steering gear, a relief valve, a check valve, a safety valve and a plate ball valve installed on the valve block;

[0006] Among them, the special balance valve for the steering gear, the relief valve, the check valve, the safety valve and the plate ball valve are interconnected through the internal channels of the valve block, and the valve block also includes several oil ports. The closed-loop hydraulic system is connected to the valve block through the oil ports.

[0007] As a further description of the utility model, the oil ports of the valve block include a P port, an S port, a P1 port, a T port, an A port, a B port, an A1 port and a B1 port; the P1 port is a make-up oil port, and the T port is an oil return port;

[0008] The oil outlet of the P1 port is respectively connected to the inlet oil ports of the relief valve and the check valve through channels. The outlet oil port of the relief valve is connected to the T port through a channel. The outlet oil port of the check valve is respectively connected to the P port and the S port of the valve block through channels;

[0009] The P port and the S port of the valve block are respectively connected to the oil inlet of the special balance valve for the steering gear through channels. The safety valve is connected to the rear part of the special balance valve for the steering gear through a channel, and the plate - type ball valve is connected to the rear part of the safety valve through a flow channel.

[0010] As a further description of the present utility model, the P port and the S port of the valve block are respectively connected to the P port and the S port of the closed - type hydraulic pump. The return T port is connected to the housing of the closed - type hydraulic pump, and the fuel tank is connected to the housing of the closed - type hydraulic pump;

[0011] The oil inlet of the P1 port is connected to the P port of the auxiliary pump;

[0012] The A port and the B port of the valve block are respectively connected to the A port and the B port of the steering gear mechanical body. The A1 port and the B1 port of the valve block are connected to the servo pump of the servo control system, for the control loop.

[0013] As a further description of the present utility model, the special balance valve for the steering gear is set as a plate - type balance valve for the smooth operation of the steering gear.

[0014] As a further description of the present utility model, the overflow valve is set as a plate - type overflow valve for regulating the oil - replenishing pressure.

[0015] As a further description of the present utility model, the check valve is set as a screw - in cartridge check valve for oil replenishment and preventing oil back - flow.

[0016] As a further description of the present utility model, the safety valve is set as a plate - type safety valve for preventing the closed - type hydraulic system from overloading.

[0017] As a further description of the present utility model, the plate - type ball valve is in a normally - closed state, and in case of emergency, it connects the A port and the B port of the valve block.

[0018] Compared with the prior art, the technical effect of the present utility model is:

[0019] The present utility model provides a main control valve group for a marine closed - type steering gear. The valve group includes a valve block and a special balance valve for the steering gear, an overflow valve, a check valve, a safety valve, and a plate - type ball valve installed on the valve block. The special balance valve for the steering gear, the overflow valve, the check valve, the safety valve, and the plate - type ball valve are interconnected through channels inside the valve block, and the valve block also includes several oil ports. The closed - type hydraulic system is connected to the valve block through the oil ports. This valve group integrates the control functions of the hydraulic steering gear, and has the advantages of high integration degree, simple structure, stable operation, and high reliability, ensuring the smooth operation of the steering gear in the marine environment. Description of the Drawings

[0020] Figure 1 It is a structural view of the valve group of the present utility model;

[0021] Figure 2 Schematic diagram of the hydraulic principle of the valve group of the present utility model;

[0022] Figure 3 Schematic diagram of the actual application principle of the valve group of the present utility model.

[0023] In the figure, 1. valve block, 2. special balance valve for steering gear, 3. overflow valve, 4. check valve, 5. safety valve, 6. plate ball valve;

[0024] 7. P port, 71. S port, 72. P1 port, 73. T port, 74. A port, 75. B port, 76. A1 port, 77. B1 port. Specific embodiments

[0025] The present utility model will be described in detail below with reference to the accompanying drawings:

[0026] In an embodiment of the present utility model, a main control valve group for a marine closed-type steering gear is disclosed. Referring to Figures 1-3 as shown, it is used for a closed hydraulic system. The closed hydraulic system includes a closed hydraulic pump, an auxiliary pump, a steering gear mechanical body, a servo control system and an oil tank; the valve group of this embodiment includes a valve block 1, and a special balance valve 2 for steering gear, an overflow valve 3, a check valve 4, a safety valve 5 and a plate ball valve 6 installed on the valve block 1; wherein, the special balance valve 2 for steering gear, the overflow valve 3, the check valve 4, the safety valve 5 and the plate ball valve 6 are interconnected through the internal channels of the valve block 1, and the valve block 1 also includes a number of oil ports, and the closed hydraulic system is connected to the valve block 1 through the oil ports.

[0027] Specifically, in this embodiment, the oil ports of the above valve block 1 include a P port 7, an S port 71, a P1 port 72, a T port 73, an A port 74, a B port 75, an A1 port 76, a B1 port 77. The P1 port 72 is a make-up oil port, and the T port 73 is a return oil port.

[0028] The connection relationship of the above oil ports through the channels inside the valve block 1 is as follows: the oil outlet of the P1 port 72 is respectively connected to the inlet oil ports of the overflow valve 3 and the check valve 4 through channels, the oil outlet of the overflow valve 3 is connected to the T port 73 through a channel, and the oil outlet of the check valve 4 is respectively connected to the P port 7 and the S port 71 of the valve block 1 through channels; the P port 7 and the S port 71 of the valve block 1 are respectively connected to the inlet oil ports of the special balance valve 2 for steering gear through channels, the safety valve 5 is connected to the rear part of the special balance valve 2 for steering gear through a channel, and the plate ball valve 6 is connected to the rear part of the safety valve 5 through a flow channel.

[0029] The connection relationships between the above-mentioned oil ports and the components in the closed hydraulic system are as follows: The P port 7 and the S port 71 of the valve block 1 are respectively connected to the P port and the S port of the closed hydraulic pump. The T port 73 is connected to the housing of the closed hydraulic pump, and the fuel tank is connected to the housing of the closed hydraulic pump. The oil inlet of the P1 port 72 is connected to the P port of the auxiliary pump. The A port 74 and the B port 75 of the valve block 1 are respectively connected to the A port and the B port of the steering gear mechanical body. The A1 port 76 and the B1 port 77 of the valve block 1 are connected to the servo pump of the servo control system, forming a control loop.

[0030] It should also be noted that in this embodiment, in order to better meet the implementation of the above-mentioned valve block 1, various valves of the above-mentioned valve block 1 are further described. The special balance valve 2 for the steering gear adopts a plate-type balance valve to stabilize the steering gear and make the steering gear operate smoothly. The relief valve 3 adopts a plate-type relief valve to adjust the oil filling pressure of the closed hydraulic system. The check valve 4 adopts a screw-in cartridge check valve to fill oil for the closed hydraulic system and prevent the oil in the closed hydraulic system from flowing back. The safety valve 5 adopts a plate-type safety valve and is installed behind the special balance valve 2 for the steering gear to prevent the closed hydraulic system from overloading and protect the components in the closed hydraulic system. The plate-type ball valve 6 is installed behind the safety valve 5. The plate-type ball valve 6 is in a normally closed state and is used to connect the A port and the B port of the valve block 1 in case of emergency.

[0031] Through the above content, the valve group of this embodiment is disclosed. The above-mentioned valve group integrates the control function of the closed hydraulic steering gear and ensures the stable operation of the closed hydraulic steering gear in the marine environment.

[0032] Based on the structure disclosed by the above-mentioned valve group, the control method flow applied in the closed hydraulic system is as follows:

[0033] The auxiliary pump outputs hydraulic oil, and the hydraulic oil reaches the oil inlets of the relief valve and the check valve through the oil filling port P1 of the valve block.

[0034] Part of the hydraulic oil overflows through the relief valve to the return port T of the valve block, then reaches the housing of the closed hydraulic pump through the return port T and finally returns to the fuel tank. Another part of the hydraulic oil reaches the internal channels of the S port and the P port of the valve block through the check valve, and then reaches the S port or P port of the closed hydraulic pump through the S port or P port of the valve block. The closed hydraulic pump outputs high-pressure oil.

[0035] The high-pressure oil output by the closed hydraulic pump reaches the P port or S port of the valve block through the P port or S port, and through the internal channels of the valve block, reaches the oil inlet of the special balance valve for the steering gear. The servo pump controls the commutation and output flow of the closed hydraulic pump, pushes the special balance valve for the steering gear to commutate, so that the high-pressure oil reaches the steering gear mechanical body through the special balance valve for the steering gear and drives the steering gear to operate.

[0036] It should be noted that in this embodiment, during the operation of the steering gear, the safety valve of the valve block is installed behind the special balance valve for the steering gear to prevent the closed hydraulic system from overloading and protect the components in the closed hydraulic system; the plate ball valve is installed behind the safety valve and is in a normally closed state. In case of emergency, the A port and the B port of the valve block are connected.

[0037] Through the above embodiments, the technical solution of the present invention is disclosed. The above valve group is used in a marine closed hydraulic system and has the advantages of high integration, simple structure, stable operation and high reliability, etc., and solves the defects of low integration, complex structure, action jitter and poor reliability of the marine closed hydraulic steering gear valve group.

[0038] The above embodiments are only used to illustrate the technical solution of the present invention and not to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A main control valve group for a marine closed-type steering gear, which is used in a closed-type hydraulic system. The closed-type hydraulic system includes a closed-type hydraulic pump, an auxiliary pump, a steering gear mechanical body, a servo control system and an oil tank, and is characterized in that: The valve group includes a valve block, as well as a special balance valve for the steering gear, an overflow valve, a check valve, a safety valve, and a plate-type ball valve installed on the valve block; Among them, the special balance valve for the steering gear, the overflow valve, the check valve, the safety valve, and the plate-type ball valve are interconnected through the internal channels of the valve block, and the valve block also includes several oil ports, and the closed hydraulic system is connected to the valve block through the oil ports.

2. The main control valve group of a marine closed-type steering gear according to claim 1, characterized in that: The oil ports of the valve block include P port, S port, P1 port, T port, A port, B port, A1 port, B1 port; the P1 port is the oil replenishment port, and the T port is the oil return port; The oil outlet of the P1 port is respectively connected to the oil inlets of the overflow valve and the check valve through channels, the oil outlet of the overflow valve is connected to the T port through a channel, and the oil outlet of the check valve is respectively connected to the P port and the S port of the valve block through channels; The P port and the S port of the valve block are respectively connected to the oil inlets of the special balance valve for the steering gear through channels, the safety valve is connected to the rear part of the special balance valve for the steering gear through a channel, and the plate-type ball valve is connected to the rear part of the safety valve through a flow channel.

3. The main control valve group of a marine closed-type steering gear according to claim 2, characterized in that: The P port and the S port of the valve block are respectively connected to the P port and the S port of the closed hydraulic pump, the T port is connected to the housing of the closed hydraulic pump, and the fuel tank is connected to the housing of the closed hydraulic pump; The oil inlet of the P1 port is connected to the P port of the auxiliary pump; The A port and the B port of the valve block are respectively connected to the A port and the B port of the steering gear mechanical body, and the A1 port and the B1 port of the valve block are connected to the servo pump of the servo control system, control circuit.

4. A main control valve group for a marine closed-type steering gear according to claim 1, characterized in that: The special balance valve for the steering gear is set as a plate-type balance valve for the smooth operation of the steering gear.

5. A main control valve group for a marine closed-type steering gear according to claim 1, characterized in that: The overflow valve is set as a plate-type overflow valve for adjusting the oil replenishment pressure.

6. The main control valve group of a marine closed-type steering gear according to claim 1, characterized in that: The check valve is set as a threaded cartridge check valve for oil replenishment and preventing oil from flowing back.

7. A main control valve group for a marine closed-type steering gear according to claim 1, characterized in that: The safety valve is set as a plate-type safety valve for preventing the closed hydraulic system from overloading.

8. The main control valve group of a marine closed-type steering gear according to claim 1, characterized in that: The plate-type ball valve is in a normally closed state and connects the A port and the B port of the valve block in case of emergency.

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