Functional module of a deep-sea compact hydraulic valve group

Abstract

The present invention discloses a functional position module of a deep-sea compact hydraulic valve group, comprising a module valve body, a control valve, a one-way throttle valve, a hydraulic piston, an overflow valve and a sealing cover; the control valve is fixed on the top of the module valve body; two one-way throttle valves are coaxially and symmetrically fixed on the left and right sides of the module valve body with threads; the hydraulic piston is located in the middle of the two one-way throttle valves, and the hydraulic piston is provided with a sealing ring, and protrusions are respectively provided at both ends of the hydraulic piston to push open the one-way throttle valve; the overflow valve is threadedly connected to the bottom of the module valve body, the oil channel on one side of the overflow valve body is connected to the module oil return port, and the oil channel on the other side of the overflow valve body is connected to the module output port A or B; the sealing cover is connected to the top of the module valve body and presses the sealing ring on the upper surface of the module valve body; a watertight connector interface is provided on one side of the sealing cover; two oil return ports and one input port are provided on the module valve body; a plurality of staggered transverse through holes are provided at the lower part of the module valve body along the front-to-back direction, which are used to string a plurality of unit modules into the required hydraulic valve group.

Description

Technical Field

[0001] The invention belongs to the technical field of valves, and in particular relates to the structure of a deep-sea compact hydraulic valve group. Background Art

[0002] At present, the hydraulic valve groups suitable for deep-sea equipment control mainly include six-position universal function valve groups, eight-position universal function valve groups, twelve-position universal function valve groups, sixteen-position universal function valve groups and other fixed-function universal valve groups, whose structure is fixed and cannot be changed. Universal hydraulic valve groups provide the required hydraulic flow and pressure for terminal equipment such as hydraulic actuators on deep-sea working-class unmanned remote-controlled submersibles, manned submersibles and other submersibles, such as hydraulic manipulators, high-pressure seawater pumps, and trim adjustment systems, to control the actions of these actuators. Due to the complex deep-sea conditions, the equipment carried on unmanned and manned submersibles is extremely demanding, especially the size and weight of the structure are greatly restricted. The existing hydraulic valve groups are all of specific digits and are relatively large in size, and cannot be configured according to the specific needs of unmanned and manned submersibles.

[0003] The existing deep-sea hydraulic function valve group mainly has the following problems:

[0004] 1. The structural unit is fixed, and the hydraulic valve group cannot be freely configured according to its own needs;

[0005] 2. The valve group components are bulky;

[0006] 3. The overall size and weight of the valve group are large, which is not conducive to the deep-sea operation requirements of unmanned and manned submersibles.

[0007] The above-mentioned problems existing in the existing deep-sea hydraulic function valve group are also problems existing in the design and manufacture of submersibles and need to be solved urgently. Summary of the invention

[0008] The task of the present invention is to overcome the defects of the deep-sea hydraulic function valve group in the prior art, such as the fixed number of structural units, bulky volume and heavy weight, and to provide a deep-sea hydraulic function valve group device with a compact structure, complete functions, flexible combination and lightweight.

[0009] The objectives of the present invention are achieved through the following technical solutions.

[0010] A functional position module of a deep-sea compact hydraulic valve group, characterized in that it includes a module valve body, a control valve, a one-way throttle valve, a hydraulic piston, a relief valve, a sealing cover and fixed accessories; the control valve is fixed to the top of the module valve body; the one-way throttle valve has two identical parts, which are coaxially and symmetrically fixed to the left and right sides of the module valve body by using threads; the hydraulic piston is located in the middle of the two one-way throttle valves in the axial direction, and an isolating sealing ring is provided in the middle of the hydraulic piston. There is a protrusion at each end of the hydraulic piston, which moves axially under the action of the hydraulic pressure difference, and the corresponding protrusion will push open the one-way valve at the bottom of the one-way throttle valve; the relief valve is a plug-in structure, which is connected to the bottom of the module valve body by threads, and the relief valve body The oil passage on one side is connected to the oil return port T of the valve group function position module, and the oil passage on the other side of the relief valve body is connected to the output port A or B of the valve group function position module; the sealing cover is connected to the top of the module valve body, and at the same time, the sealing cover presses the sealing ring on the upper surface of the module valve body to seal and isolate the control valve from the outside; a watertight connector interface is provided on one side of the sealing cover for externally connecting the signal line of the control valve coil; two oil return ports T and one input port P are provided on the module valve body, and sealing ring grooves are processed on the T port and the P port, and sealing rings are placed in the grooves; a plurality of mutually staggered longitudinal through holes are provided on the lower part of the module valve body along the front-to-back direction, which are used to string a plurality of function position modules in parallel into the required hydraulic valve group.

[0011] The functional position module can adjust the flow of hydraulic oil to ports A and B, control the flow direction of hydraulic oil to ports A and B, lock the oil flow to ports A and B when the control valve is in the middle position, and protect the liquid pressure of ports A and B.

[0012] In a preferred embodiment, the control valve is composed of an electromagnetic reversing valve or a proportional reversing valve or a mixture of the two.

[0013] In a preferred embodiment, the valve seat at the bottom of the one-way throttle valve is a spherical structure, and the one-way throttle valve acts as a hydraulic lock.

[0014] In a preferred embodiment, the control valve is fixed to the upper side of the module valve body by screws; the sealing cover covers the control valve and is connected to the top of the module valve body by screws, wherein the screws are hexagonal head screws or cylindrical head hexagon socket screws.

[0015] In a preferred embodiment, the sealing ring isolating the middle of the hydraulic piston is an O-type rubber sealing ring, and there are two sealing rings, which are symmetrically arranged at a certain distance from each other.

[0016] In a preferred embodiment, a conical opening is provided on one side of the oil passage inside the overflow valve body, a spring holds a spherical sealing body tightly against the conical opening via a spring support, and the oil passage on this side is connected to the T-port of the valve group functional position module.

[0017] In the preferred embodiment, the valve body of the functional position module has a bilaterally symmetrical structure, and a hydraulic oil inlet P port is processed in the middle of the front side of the functional position module valve body, which runs through the front and rear end faces of the module valve body, and is used for the hydraulic oil to flow into the functional position module from the outside. An O-ring groove is processed in the hole, and an O-ring is installed in the groove for sealing when multiple functional position modules are installed together.

[0018] The beneficial effects of the present invention are:

[0019] 1. Adopting modular design and manufacturing, the functional modules can be combined into hydraulic valve groups according to the number of units required by the actual submersible;

[0020] 2. The functional module has the comprehensive functions of hydraulic reversing, overflow protection, hydraulic locking and flow regulation, and is particularly suitable for working in deep-sea environments;

[0021] 3. The functional module has a special hydraulic piston, overflow valve structure and a special oil channel, and the components in the module are highly integrated;

[0022] 4. Complete functions, compact structure, flexible combination, lightweight and reduced space occupied;

[0023] 5. It is suitable for the application of various submersible equipment, which is conducive to the realization of serialization, generalization and standardization. The unit function module is produced according to standardization, which greatly simplifies the process, greatly improves the efficiency, and facilitates the processing management, quality management and storage and transportation management; BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an exploded schematic diagram of a functional bit module of an embodiment of the present invention;

[0025] Figure 2 yes Fig. 9 AA cross-sectional view schematic diagram;

[0026] Figure 3 It is a schematic diagram of a hydraulic piston structure;

[0027] Figure 4 It is a schematic diagram of the relief valve structure;

[0028] Figure 5 yes Figure 2 Schematic diagram of CC cross section;

[0029] Figure 6 yes Figure 2 BB cross-sectional diagram;

[0030] Figure 7 It is a schematic diagram of the connection of a deep-sea compact hydraulic valve group with four functional modules;

[0031] Figure 8It is a three-dimensional schematic diagram of a unit deep-sea compact hydraulic valve group;

[0032] Fig. 9 This is the main view of the unit deep-sea compact hydraulic valve group;

[0033] Fig.10 It is a schematic diagram of the hydraulic principle of the functional module;

[0034] Fig.11 It is a schematic diagram of the hydraulic piston structure of another embodiment.

[0035] Figure numerals: module valve body 1; control valve 2; one-way throttle valve 3; hydraulic piston 4; relief valve 5; sealing cover 6; hexagon head screw 7; control valve mounting hole 8; steel ball 9; O-ring 10; protrusion 11; spring 12; spring support 13; relief valve body 14; stud 15; sealing cover connecting screw hole 16; static sealing ring 17; watertight connector interface 18; oil inlet P port 19; oil return port T port 20; through hole 21; oil return passage 22; oil inlet passage 23; oil channel hole 24; hexagon head screw and washer 25; sealing cover mounting hole 26. DETAILED DESCRIPTION

[0036] The following is a detailed description of an embodiment of the present invention in conjunction with the accompanying drawings: This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0037] A functional position module of a deep-sea compact hydraulic valve group, comprising a functional position module valve body 1, a control valve 2, a one-way throttle valve 3, a hydraulic piston 4, a relief valve 5, a sealing cover 6 and fixed accessories; the control valve 2 is composed of an electromagnetic reversing valve or a proportional reversing valve or a mixture of the two, and the top of the module valve body 1 has a threaded hole for installing a control valve installation hole 8 for the control valve 2, and the control valve 2 is fixed to the top of the module valve body 1 by a hexagonal screw 7. Figure 1 .

[0038] A one-way throttle valve 3 mounting hole is processed on the left and right sides of the module valve body 1, and a thread is processed at the opening of the hole for the installation of the one-way throttle valve 3; the one-way throttle valve 3 is a socket-type valve, and each unit functional module has two identical one-way throttle valves 3 and is symmetrically fixed to the left and right sides of the module valve body 1 along the same axis using threads. The left one-way throttle valve 3 is installed from the left side of the module valve body 1, and its semi-circular end face is tightly attached to the left side of the module valve body 1. The right one-way throttle valve 3 is installed from the right side of the module valve body 1, and its semi-circular end face is tightly attached to the right side of the module valve body 1. The bottom of each one-way throttle valve 3 has a one-way valve structure with a spherical valve seat, which acts as a hydraulic lock. See Figure 2 .

[0039] When the hydraulic oil flows into the left cavity from the left channel of the control valve 2, the pressure in the left cavity increases, and the hydraulic oil pressure pushes open the one-way valve steel ball 9 at the bottom of the right one-way throttle valve 3, and the one-way valve at the bottom of the left one-way throttle valve 3 is in a conducting state, so that the hydraulic oil can flow into the A port through the left one-way throttle valve 3 to reach the external actuator, and the hydraulic oil flows from the external actuator into the right one-way throttle valve 3 and the one-way valve at the bottom thereof through the B port; in addition, when the hydraulic oil flows from the right channel of the control valve 2 into the right cavity, the pressure on the right side increases, pushing the hydraulic piston 4 to move leftward, pushing open the one-way valve steel ball 9 at the bottom of the left one-way throttle valve 3, and the one-way valve at the bottom of the right one-way throttle valve 3 is in a conducting state, so that the hydraulic oil can flow into the B port through the right one-way throttle valve 3 to reach the external actuator, when the hydraulic oil flows from the external actuator into the left one-way throttle valve 3 and the one-way throttle valve at the bottom thereof through the A port. In this way, the spherical one-way valve at the bottom of the left and right one-way throttle valves and the hydraulic piston valve together form a "hydraulic lock" structure.

[0040] The hydraulic piston 4 is located in the middle of the two one-way throttle valves 3 along the axial direction. At least one isolated O-ring 10 is provided in the middle of the hydraulic piston 4, so that a closed cavity is formed at its left and right ends. There is a protrusion 11 at each end of the hydraulic piston 4. Under the action of the hydraulic pressure difference, the corresponding protrusion 11 will push open the one-way valve at the bottom of the one-way throttle valve 3, thereby opening the hydraulic lock. Figure 3 .

[0041] The one-way throttle valve connection holes on the left and right sides of the module valve body 1 are processed with annular output holes of the one-way throttle valve 3, which are respectively connected to the connection holes of the overflow valve 5 on the left and right ends of the bottom of the module valve body 1, and the input annular holes of the overflow valve 5 are processed, and the output port of the overflow valve 5 is connected to the oil return port T port 20; the left and right sides of the bottom of the module valve body 1 are also processed with external A port and B port oil channel holes, which are connected to the annular holes of the overflow valve 5. The overflow valve 5 is composed of a valve seat, a spring 12, a spring support 13, a steel ball 9 and an overflow valve body 14. There is a conical opening on one side of the oil channel inside the overflow valve body 14. The spring 12 presses the steel ball 9 sealing body tightly against the conical opening through the spring support 13, and the oil channel on this side is connected to the oil return port T port of the valve group functional position module. One end of the overflow valve body 14 is processed with an external thread, and the two overflow valves 5 are fixed to the two sides of the lower end surface of the module valve body 1 by threads. The relief valve 5 is connected to the one-way throttle valve 3 through the annular hole inside the module valve body 1 and the A or B port. When the hydraulic oil pressure at the A or B port is higher than the pressure of the spring 12 of the relief valve 5, the steel ball 9 of the relief valve 5 opens, and the hydraulic oil at the A or B port returns through the oil return port T port 20, thereby achieving the purpose of rapid pressure reduction at the A or B port, protecting the hydraulic hose, external actuator, etc. connected to the A or B port. Since the device is used in equipment such as submarines that require strict noise restrictions, hoses should be used as the connecting pipes and hard pipes should be used with caution, so preventing the hose from being damaged is also a concern. Figure 4 .

[0042] The sealing cover 6 is installed on the top of the functional module valve body 1 to cover the control valve 2, and is fixed to the sealing cover connecting screw hole 16 on the top of the functional module valve body 1 by using a hexagonal head screw and a washer 25 or a cylindrical head hexagon socket screw with a washer. At the same time, the lower edge of the sealing cover 6 presses the static sealing ring 17 set in the preset sealing groove on the upper surface of the module valve body 1 to isolate the control valve 2 from the outside; one side of the sealing cover 6 is provided with a watertight connector interface 18 for externally connecting the signal line of the control valve coil. Figure 5 .

[0043] The upper surface of the module valve body 1 is processed with hydraulic oil passages, including a return oil passage 22 and an inlet oil passage 23, which are used to control the hydraulic oil in the valve 2 to flow from the oil inlet port P 19 and the hydraulic oil in the valve 2 to the return oil port T 20, and the two output ports of the control valve 2 to flow into the oil passage hole 24 of the spherical check valve structure at the bottom of the one-way throttle valve 3. A sealing ring groove is processed on the return oil port T 20, and an O-ring is placed in the groove. Figure 6 .

[0044] The module valve body 1 is a bilaterally symmetrical structure. The front center of the module valve body 1 is processed with a hydraulic oil inlet port P19 that runs through the front and rear ends of the module valve body 1. It is used for hydraulic oil to flow into the functional position module from the outside. An O-ring groove is processed in the hole. An O-ring is installed in the groove for sealing when multiple functional position modules are installed together. Figure 7 .

[0045] Two through holes are processed on both sides of the oil inlet P port 19, which are used for the oil return port T port 20 for the hydraulic oil to flow back to the oil tank after circulation. O-ring grooves are processed in the holes, and O-rings are installed in the grooves for sealing when multiple unit functional modules are installed together. Figure 8 .

[0046] The lower part of the front and rear surfaces of the functional position module is provided with three mutually staggered transverse through holes 21, which are used to stack multiple unit functional position modules in parallel and fasten them together with studs 15 and nuts to form the required hydraulic valve group. Fig. 9 .

[0047] Functional module hydraulic principle Fig. 9 As shown, it adjusts the hydraulic oil flow to ports A and B, controls the flow direction of the hydraulic oil to ports A and B, locks the oil flow to ports A and B when the control valve is in the middle position, and maintains the liquid pressure at ports A and B. Fig.10 .

[0048] Embodiment 2: The O-rings 10 of the hydraulic piston 4 are preferably symmetrically arranged in two pieces, and the two O-rings 10 are spaced a certain distance apart to keep the hydraulic piston 4 sliding smoothly and without deflection. The two sealing rings can reduce the probability of leakage, and the rest of the structure is the same as that of embodiment 1. Fig.11 .

[0049] The functional module of this deep-sea compact hydraulic valve group has the functions of reversing, two-way oil return throttling, two-way hydraulic lock, and A / B port pressure overflow protection, and is particularly suitable for working in deep-sea environments.

[0050] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A functional module of a deep-sea compact hydraulic valve group, characterized in that: It includes a module valve body, a control valve, a one-way throttle valve, a hydraulic piston, a relief valve, a sealing cover and fixed accessories; the control valve is fixed on the top of the module valve body; the one-way throttle valve has two identical parts, which are fixed to the left and right sides of the module valve body along the same axis and symmetrically by using threads; the hydraulic piston is located in the middle of the two one-way throttle valves along the axial direction, and an isolating sealing ring is provided in the middle of the hydraulic piston. There is a protrusion at each end of the hydraulic piston, which moves axially under the action of the hydraulic pressure difference, and the corresponding protrusion will push open the one-way valve at the bottom of the one-way throttle valve; the relief valve is a plug-in structure, which is connected to the bottom of the module valve body by threads, and the oil channel on one side of the relief valve body is connected to the valve group functional position module The oil return port T of the module is connected, and the oil passage on the other side of the relief valve body is connected to the output port A or B of the valve group function position module; the sealing cover is connected to the top of the module valve body, and the sealing cover presses the sealing ring on the upper surface of the module valve body to seal and isolate the control valve from the outside; a watertight connector interface is provided on one side of the sealing cover for externally connecting the signal line of the control valve coil; the module valve body is provided with two oil return ports T and one input port P, and sealing ring grooves are processed on the T and P ports, and sealing rings are placed in the grooves; the lower part of the module valve body is provided with a plurality of mutually staggered longitudinal through holes along the front-to-back direction, which are used to string a plurality of function position modules in parallel into the required hydraulic valve group; The control valve is composed of a solenoid reversing valve or a proportional reversing valve or a combination of the two; The valve seat at the bottom of the one-way throttle valve is a spherical structure, and the one-way throttle valve acts as a hydraulic lock; The control valve is fixed to the upper side of the module valve body by screws; the sealing cover covers the control valve and is connected to the top of the module valve body by screws, wherein the screws are hexagonal head screws or cylindrical head hexagon socket screws; The sealing ring isolating the middle of the hydraulic piston is an O-type rubber sealing ring. There are two sealing rings, which are symmetrically arranged at a certain distance from each other. There is a conical opening on one side of the oil passage inside the relief valve body. The spring presses a spherical sealing body tightly against the conical opening through a spring support. The oil passage on this side is connected to the T port of the valve group function position module. A one-way throttle valve installation hole is processed on the left and right sides of the module valve body respectively, and a thread is processed at the opening of the hole for the installation of the one-way throttle valve; the one-way throttle valve is a socket-type valve, and each unit functional module has two identical one-way throttle valves and are symmetrically fixed to the left and right sides of the module valve body along the same axis using threads. The left one-way throttle valve is installed from the left side of the module valve body, and its semicircular end face is tightly attached to the left side of the module valve body. The right one-way throttle valve is installed from the right side of the module valve body, and its semicircular end face is tightly attached to the right side of the module valve body.

2. The functional position module of a deep-sea compact hydraulic valve group according to claim 1 is characterized in that the function The function module valve body has a bilaterally symmetrical structure. A hydraulic oil inlet P port is machined in the middle of the front of the function module valve body and runs through the front and rear end faces of the module valve body. It is used for hydraulic oil to flow into the function module from the outside. An O-ring groove is machined in the hole, and an O-ring is installed in the groove for sealing when multiple function modules are installed together.

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