A deep-sea compensated hydraulic control valve box

Abstract

The present invention relates to a deep-sea compensated hydraulic control valve box. The present invention includes a valve box body, the valve box body includes a valve block and a box body connected to the valve block, and the interior of the box body is filled with hydraulic oil; a compensator, the compensator includes a compensator base connected to the outer end of the box body and communicating with the box body, a compensator housing connected to the compensator base, and a compensator diaphragm provided in the compensator housing. One end of the compensator housing is open, so that the compensator diaphragm is exposed at the opening of the compensator housing. By the action of seawater pressure on the compensator diaphragm, the compensator diaphragm deforms under force and inwardly presses the hydraulic oil in the box body, and transmits the seawater pressure to the inside of the box body, so that the pressure of the hydraulic oil in the box body is equal to the seawater pressure, which can compensate for the seawater pressure and the volume of the hydraulic oil, ensure the normal operation of the valve box and the hydraulic components therein in the deep high-pressure environment, greatly reduce the weight of the valve box, and meet the requirements of lightweight of the underwater hydraulic system.

Description

Technical Field

[0001] The present invention relates to the technical field of deep - sea hydraulic systems, and particularly to a deep - sea compensated hydraulic control valve box. Background Art

[0002] The hydraulic control valve box is a key component of the deep - sea hydraulic system. To ensure the normal operation of the underwater hydraulic system, the hydraulic control unit composed of hydraulic control valves, valve blocks, and circuits is usually designed as a closed structure. Although some hydraulic control valves use seawater - corrosion - resistant materials and can be directly exposed to seawater, considering that electromagnets, amplifier circuits, etc. cannot work in seawater, a closed - type valve box is designed, and the hydraulic control unit is arranged inside the valve box. Currently, the hydraulic control valve box applied in shallow waters is a pressure - resistant hydraulic control valve box, that is, a dry - type valve box that resists external water pressure by increasing the wall thickness of the valve box body. However, in a deep - sea environment (water depth greater than 1000 meters), the water pressure is greater than 10 MPa. Using a pressure - resistant valve box will greatly increase the weight of the valve box, violating the basic concept of the lightweight design of the deep - sea hydraulic system and increasing the cost. Summary of the Invention

[0003] To solve the above - mentioned technical problems, the present invention provides a deep - sea compensated hydraulic control valve box. When in use, the inside of the valve box is filled with hydraulic oil, and the external seawater pressure is balanced by a pressure compensator on the valve box, which can greatly reduce the weight of the hydraulic control valve box.

[0004] To solve the above - mentioned technical problems, the present invention provides a deep - sea compensated hydraulic control valve box, comprising:

[0005] A valve box body, the valve box body includes a valve block and a box body connected to the valve block, and the inside of the box body is filled with hydraulic oil;

[0006] A compensator, the compensator includes a compensator base connected to the outer side end of the box body and communicating with the box body, a compensator housing connected to the compensator base, and a compensator diaphragm arranged inside the compensator housing. One end of the compensator housing is open, so that the compensator diaphragm is exposed at the opening of the compensator housing;

[0007] Due to the action of seawater pressure on the compensator diaphragm, the compensator diaphragm deforms under force and inwardly presses the hydraulic oil in the box body, and transmits the seawater pressure to the inside of the box body, making the pressure of the hydraulic oil in the box body equal to the seawater pressure.

[0008] In an embodiment of the present invention, an exhaust port and an oil injection port for injecting hydraulic oil are provided at the side end of the box body.

[0009] In an embodiment of the present invention, one end of the compensator base is provided with a threaded joint, the other end of the compensator base is provided with an external thread, the compensator base is threadedly connected to the box body through the threaded joint, and the compensator housing is threadedly connected to the compensator base through the external thread.

[0010] In an embodiment of the present invention, the compensator diaphragm includes a membrane tube in the shape of a bellows and a metal elastic diaphragm connected to the membrane tube near the opening of the compensator housing.

[0011] In an embodiment of the present invention, an organic glass cover plate is further connected to the upper end of the box body, a first sealing ring is provided between the organic glass cover plate and the upper end of the valve box body, and a second sealing ring is provided between the valve block and the box body.

[0012] In an embodiment of the present invention, it further includes a plurality of first hydraulic oil circuits and a plurality of second hydraulic oil circuits. The valve block is provided with an oil inlet and an oil return port. The first hydraulic oil circuit includes a solenoid directional control valve, a first hydraulic lock, and a first one-way throttle valve connected in sequence. The solenoid directional control valve is respectively connected to the oil inlet and the oil return port. The second hydraulic oil circuit includes a proportional directional control valve, a second hydraulic lock, and a second one-way throttle valve connected in sequence. The proportional directional control valve is respectively connected to the oil inlet and the oil return port.

[0013] In an embodiment of the present invention, the first hydraulic lock and the solenoid directional control valve are sequentially placed on the upper end of the valve block and are located inside the box body. The second hydraulic lock and the proportional directional control valve are sequentially placed on the upper end of the valve block and are located inside the box body. The first one-way throttle valve and the second one-way throttle valve are both connected to the side end of the valve block. The valve block is also connected with a pipe joint.

[0014] In an embodiment of the present invention, a circuit wiring board, a pressure sensor, and a water leakage detection switch are further provided inside the box body. A watertight cable plug is connected to the outer side end of the box body. The solenoid directional control valve, the proportional directional control valve, the pressure sensor, and the water leakage detection switch are all electrically connected to the circuit wiring board. The solenoid directional control valve, the proportional directional control valve, the pressure sensor, and the water leakage detection switch are all connected to a host computer.

[0015] In an embodiment of the present invention, the solenoid directional control valve is a three-position four-way solenoid directional control valve, the proportional directional control valve is a three-position four-way proportional directional control valve, and the first hydraulic lock and the second hydraulic lock are both stacked hydraulic locks.

[0016] In an embodiment of the present invention, both the first hydraulic oil circuit and the second hydraulic oil circuit are provided with four circuits.

[0017] The above technical solutions of the present invention have the following advantages compared with the prior art:

[0018] The deep-sea compensation hydraulic control valve box described in the present invention can compensate for seawater pressure and the volume of hydraulic oil, ensuring the normal operation of the valve box and the hydraulic components therein in a deep high-pressure environment, and greatly reducing the weight of the valve box, meeting the requirements of lightweight for underwater hydraulic systems. The present invention can also be applied to other high-pressure working conditions besides deep-sea environments, having broad application prospects and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the present invention easier to be clearly understood, the following further describes the present invention in detail according to specific embodiments of the present invention in conjunction with the drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the deep-sea compensation hydraulic control valve box of the present invention.

[0021] Figure 2 It is a schematic diagram of the deep-sea compensation hydraulic control valve box of the present invention after omitting the plexiglass cover plate.

[0022] Figure 3 It is a schematic diagram of the internal component structure of the deep-sea compensation hydraulic control valve box of the present invention.

[0023] Figure 4 It is a schematic diagram of the first hydraulic oil circuit structure of the deep-sea compensation hydraulic control valve box of the present invention.

[0024] Figure 5 It is a schematic diagram of the second hydraulic oil circuit structure of the deep-sea compensation hydraulic control valve box of the present invention.

[0025] Figure 6 It is a schematic diagram of the compensator structure of the present invention.

[0026] Figure 7 It is a schematic diagram of the existing compensator structure.

[0027] Figure 8 It is a hydraulic oil circuit connection diagram of the deep-sea compensation hydraulic control valve box of the present invention.

[0028] Figure 9 It is a circuit wiring diagram of the deep-sea compensation hydraulic control valve box of the present invention.

[0029] Figure 10 It is a schematic diagram of the compensation principle of the deep-sea compensation hydraulic control valve box of the present invention.

[0030] Description of the reference numerals in the drawings: 1. Valve box body; 11. Valve block; 12. Box body; 13. Exhaust port; 14. Oil filling port; 15. Plexiglass cover plate; 16. First sealing ring; 17. Second sealing ring; 2. Compensator; 21. Compensator base; 211. Threaded joint; 22. Compensator housing; 23. Compensator diaphragm; 231. Membrane tube; 232. Metal elastic diaphragm; 31. Electromagnetic directional control valve; 32. First hydraulic lock; 33. First one-way throttle valve; 41. Proportional directional control valve; 42. Second hydraulic lock; 43. Second one-way throttle valve; 5. Pipe joint; 6. Circuit wiring board; 7. Leakage detection switch; 8. Watertight cable plug; 9. Pressure sensor. Detailed implementation mode

[0031] The present invention will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it, but the embodiments cited do not limit the present invention.

[0032] Referring to Figures 1 to 10 As shown, a deep-sea compensated hydraulic control valve box of the present invention includes:

[0033] A valve box body 1, the valve box body 1 includes a valve block 11 and a box body 12 connected to the valve block 11, and the inside of the box body 12 is filled with hydraulic oil;

[0034] A compensator 2, the compensator 2 includes a compensator base 21 connected to the outer end of the box body 12 and communicating with the box body 12, a compensator housing 22 connected to the compensator base 21, and a compensator diaphragm 23 arranged in the compensator housing 22. One end of the compensator housing 22 is open, so that the compensator diaphragm 23 is exposed at the opening of the compensator housing 22;

[0035] Through the action of seawater pressure on the compensator diaphragm 23, the compensator diaphragm 23 is deformed by the force and squeezes the hydraulic oil in the box body 12 inward, and transmits the seawater pressure to the inside of the box body 12, so that the hydraulic oil pressure in the box body 12 is equal to the seawater pressure. Since the internal and external pressures of the box body 12 are balanced, the wall thickness of the box body 12 of the valve box can be appropriately reduced, which is beneficial to reducing the weight of the deep-sea hydraulic system.

[0036] Specifically, an exhaust port 13 and an oil filling port 14 for injecting hydraulic oil are provided at the side end of the box body 12.

[0037] Specifically, one end of the compensator base 21 is provided with a threaded joint 211, the other end of the compensator base 21 is provided with an external thread, the compensator base 21 is threadedly connected to the box body 12 through the threaded joint 211, and the compensator housing 22 is threadedly connected to the compensator base 21 through the external thread.

[0038] Specifically, asFigure 6 As shown, the compensator diaphragm 23 includes a bellows-shaped diaphragm tube 231 and a metal elastic diaphragm 232 connected to the diaphragm tube 231 near the opening of the compensator housing 22. The compensator diaphragm 23 of the compensating control valve box is an air spring structure, which is different from the conventional arched diaphragm air spring diaphragm (such as Figure 7 As shown, the hydraulic cylinder can compress faster and better when loaded, compensating for pressure and hydraulic oil.

[0039] Specifically, the upper end of the box body 12 is also connected to an organic glass cover plate 15, a first sealing ring 16 is provided between the organic glass cover plate 15 and the upper end of the valve box body 1, and a second sealing ring 17 is provided between the valve block 11 and the box body 12. By providing the organic glass cover plate 15, the internal situation of the valve box body 1 can be visually seen, and the oil filling situation in the box can be observed when the valve box is filled with oil, and the air can be discharged to the maximum extent.

[0040] In a high-pressure deep-sea environment, the hydraulic oil is compressed and its volume is reduced. At this time, the compensator diaphragm 23 is sunken inward, and the hydraulic oil in the compensator 2 is pressed into the box 12 to supplement the reduced volume of the hydraulic oil, thereby preventing the formation of cavities in the box 12, the box 12 from being squeezed and deformed, and the plexiglass cover 15 from breaking.

[0041] Specifically, Figure 4 , Figure 5 , Figure 8 As shown, it also includes a plurality of first hydraulic oil circuits and a plurality of second hydraulic oil circuits. The valve block 11 is provided with an oil inlet and an oil return port. The first hydraulic oil circuit includes an electromagnetic reversing valve 31, a first hydraulic lock 32 and a first one-way throttle valve 33 connected in sequence. The electromagnetic reversing valve 31 is connected to the oil inlet and the oil return port respectively. The second hydraulic oil circuit includes a proportional reversing valve 41, a second hydraulic lock 42 and a second one-way throttle valve 43 connected in sequence. The proportional reversing valve 41 is connected to the oil inlet (P port) and the oil return port (T port) respectively. In this embodiment, the first hydraulic oil circuit and the second hydraulic oil circuit are both provided with four circuits. Through the above arrangement, when the hydraulic system is working, the hydraulic oil enters from the P port, passes through the electromagnetic reversing valve 31, the first hydraulic lock 32 and the first one-way throttle valve 33, or the proportional reversing valve 41, the second hydraulic lock 42 and the second one-way throttle valve 43, and then controls the actuator action. The valve box has eight independently controllable circuits, among which the four-way proportional reversing valve 41 can be controlled by the host computer to control the valve opening to control the flow rate, meeting the needs of users under different working conditions. The valve box has reversing, speed regulation and locking functions, and is suitable for most hydraulic systems.

[0042] Specifically, Figure 4 and Figure 5As shown, the first hydraulic lock 32 and the electromagnetic directional control valve 31 are sequentially placed on the upper end of the valve block 11 and are located inside the box body 12. The second hydraulic lock 42 and the proportional directional control valve 41 are sequentially placed on the upper end of the valve block 11 and are located inside the box body 12. The first one-way throttle valve 33 and the second one-way throttle valve 43 are both connected to the side end of the valve block 11. The valve block 11 is also connected with a pipe joint 5. The pipe joint 5, the first one-way throttle valve 33 and the second one-way throttle valve 43 are all made of 316L stainless steel material and can resist seawater corrosion. It is applicable to most hydraulic systems.

[0043] Specifically, as Figure 3 shown, inside the box body 12, there is also a circuit wiring board 6, a pressure sensor 9 and a water leakage detection switch 7. A watertight cable plug 8 is connected to the outer side end of the box body 12. The electromagnetic directional control valve 31, the proportional directional control valve 41, the pressure sensor 9 and the water leakage detection switch 7 are all electrically connected to the circuit wiring board 6. The electromagnetic directional control valve 31, the proportional directional control valve 41, the pressure sensor 9 and the water leakage detection switch 7 are all connected to the upper computer. As Figure 9 shown, Figure 9 In it, x1 and x2 are two 16-core watertight cable plugs 8. When used in combination with a watertight cable, they can connect the electrical components in the valve box and the upper computer. The pressure sensor 9 is set to two, which respectively monitor the pressure of the pressure oil circuit and the return oil circuit in the valve block and output signals to the upper computer. The water leakage detection switch 7 can alarm after the valve box is flooded. In addition, a temperature sensor interface is reserved on the circuit wiring board 6. When needed, a temperature sensor can be installed to monitor the internal temperature of the valve box and output signals to the upper computer.

[0044] Specifically, the electromagnetic directional control valve 31 is a three-position four-way electromagnetic directional control valve, the proportional directional control valve 41 is a three-position four-way proportional directional control valve, and the first hydraulic lock 32 and the second hydraulic lock 42 are both stacked hydraulic locks.

[0045] When the present invention is actually used, the seawater pressure acts on the compensator diaphragm 23, causing the compensator diaphragm 23 to be deformed by the force and squeezing the hydraulic oil inside the box body 12 inward, and transmitting the seawater pressure to the inside of the box body 12, so that the hydraulic oil pressure inside the box body 12 is equal to the seawater pressure. Due to the internal and external pressure balance of the box body 12, the wall thickness of the box body 12 of the valve box can be appropriately reduced, which is beneficial to reducing the weight of the deep-sea hydraulic system. When the hydraulic system works, the hydraulic oil enters from the P port and controls the actuator to act after passing through the electromagnetic directional control valve 31, the first hydraulic lock 32 and the first one-way throttle valve 33, or the proportional directional control valve 41, the second hydraulic lock 42 and the second one-way throttle valve 43. This valve box has a total of eight independently controllable circuits, and the four-way proportional directional control valve 41 can control the opening of the valve port by the upper computer to control the flow rate, meeting the user's needs under different working conditions.

[0046] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A deep-sea compensated hydraulic control valve box, characterized in that, Comprising: A valve box body (1), the valve box body (1) includes a valve block (11) and a box body (12) connected to the valve block (11), and the inside of the box body (12) is filled with hydraulic oil; A compensator (2), the compensator (2) includes a compensator base (21) connected to the outer side end of the box body (12) and communicating with the box body (12), a compensator housing (22) connected to the compensator base (21), and a compensator diaphragm (23) provided in the compensator housing (22). One end of the compensator housing (22) is open, so that the compensator diaphragm (23) is exposed at the opening of the compensator housing (22); By the action of seawater pressure on the compensator diaphragm (23), the compensator diaphragm (23) is deformed under force and presses the hydraulic oil in the box body (12) inward, and transmits the seawater pressure to the inside of the box body (12), so that the hydraulic oil pressure in the box body (12) is equal to the seawater pressure; An exhaust port (13) and an oil injection port (14) for injecting hydraulic oil are provided at the side end of the box body (12); One end of the compensator base (21) is provided with a threaded joint (211), the other end of the compensator base (21) is provided with an external thread, the compensator base (21) is threadedly connected to the box body (12) through the threaded joint (211), and the compensator housing (22) is threadedly connected to the compensator base (21) through the external thread; The compensator diaphragm (23) includes a membrane tube (231) in a corrugated shape and a metal elastic diaphragm (232) connected to the membrane tube (231) near the opening of the compensator housing (22); It further includes a plurality of first hydraulic oil circuits and a plurality of second hydraulic oil circuits. An oil inlet and an oil return port are provided on the valve block (11). The first hydraulic oil circuit includes a solenoid directional control valve (31), a first hydraulic lock (32), and a first one-way throttle valve (33) connected in sequence. The solenoid directional control valve (31) is respectively connected to the oil inlet and the oil return port. The second hydraulic oil circuit includes a proportional directional control valve (41), a second hydraulic lock (42), and a second one-way throttle valve (43) connected in sequence. The proportional directional control valve (41) is respectively connected to the oil inlet and the oil return port.

2. The deep-sea compensation type hydraulic control valve box according to claim 1, characterized in that, An acrylic glass cover plate (15) is further connected to the upper end of the box body (12). A first sealing ring (16) is provided between the acrylic glass cover plate (15) and the upper end of the valve box body (1), and a second sealing ring (17) is provided between the valve block (11) and the box body (12).

3. The deep-sea compensation type hydraulic control valve box according to claim 1, characterized in that The first hydraulic lock (32) and the solenoid directional control valve (31) are sequentially placed on the upper end of the valve block (11) and located inside the box body (12). The second hydraulic lock (42) and the proportional directional control valve (41) are sequentially placed on the upper end of the valve block (11) and located inside the box body (12). The first one-way throttle valve (33) and the second one-way throttle valve (43) are both connected to the side end of the valve block (11), and the valve block (11) is further connected with a pipe joint (5).

4. The deep-sea compensation type hydraulic control valve box according to claim 1, characterized in that, Inside the box body (12), there are also a circuit wiring board (6), a pressure sensor (9), and a water leakage detection switch (7). A watertight cable plug (8) is connected to the outer end of the box body (12). The electromagnetic directional valve (31), proportional directional valve (41), pressure sensor (9), and water leakage detection switch (7) are all electrically connected to the circuit wiring board (6), and the electromagnetic directional valve (31), proportional directional valve (41), pressure sensor (9), and water leakage detection switch (7) are all connected to the upper computer.

5. The deep-sea compensation type hydraulic control valve box according to claim 1, characterized in that, The electromagnetic directional valve (31) is a three-position four-way electromagnetic directional valve, the proportional directional valve (41) is a three-position four-way proportional directional valve, and the first hydraulic lock (32) and the second hydraulic lock (42) are both stacked hydraulic locks.

6. The deep-sea compensation type hydraulic control valve box according to claim 1, characterized in that, There are four paths for both the first hydraulic oil circuit and the second hydraulic oil circuit.

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