Deep sea hydraulic valve box with independent flow channel pipeline pressure compensation function

Abstract

The present application relates to deep sea hydraulic equipment, and particularly relates to a deep sea hydraulic valve box with independent flow channel pipeline pressure compensation function, which can be applied to deep sea hydraulic equipment needing to use movable oil source, and the deep sea hydraulic valve box comprises a valve block, a valve cover, a hydraulic valve, a valve box pressure compensator and a flow channel pipeline pressure compensator, the valve box pressure compensator is connected with the valve cover to compensate the pressure in the valve box, a two-position two-way switch valve is installed between the flow channel pipeline pressure compensator and a valve box oil return pipeline to control the working state of the flow channel pipeline pressure compensator, the flow channel pipeline pressure compensator can provide pressure compensation for the pipeline when there is no oil source, and the flow channel pipeline pressure compensator does not provide pressure compensation when there is oil source, so that the valve box is not affected by the flow channel pipeline pressure compensator. The present application provides an independent flow channel pipeline pressure compensation circuit, which can still protect the internal pipeline of the valve box from the influence of deep sea water pressure when the valve box is disconnected with the external hydraulic system, and does not affect the normal operation of the valve box when the valve box is connected with the external hydraulic system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of deep-sea hydraulic equipment, in particular to a deep-sea hydraulic valve box with independent flow channel pipeline pressure compensation function. BACKGROUND

[0002] The deep-sea hydraulic valve box needs to withstand the great pressure of seawater, so it must use pressure-resistant structure or pressure compensation method to resist the pressure. The pressure-resistant structure will make the valve box very heavy, so the pressure compensation method is currently mostly used. The existing deep-sea hydraulic valve box only compensates the pressure in the valve box, and the valve box must be connected with the external hydraulic system to rely on the pressure compensator of the external hydraulic system to compensate the pipeline pressure, but in some special seabed operation occasions, the oil source needs to be connected with the valve box to perform the corresponding work, and after the operation is completed, the oil source will be disconnected with the valve box, at this time, the pipeline of the valve box will lose the pressure compensation effect of the oil source, which will increase the risk of damage. SUMMARY

[0003] In order to solve the above technical problems, the present application provides a deep-sea hydraulic valve box with independent flow channel pipeline pressure compensation function, which can still protect the flow channel pipeline inside the valve box body from the influence of deep-sea seawater pressure when the valve box body is disconnected with the external hydraulic system, and does not affect the normal operation when the valve box is connected with the external hydraulic system.

[0004] The present application provides a deep-sea hydraulic valve box with independent flow channel pipeline pressure compensation function, which comprises a valve cover, a valve block, a hydraulic valve group, a plurality of pressure sensors, a water leakage alarm, a two-position two-way on-off valve, a valve box pressure compensator, a flow channel pipeline pressure compensator and an exhaust hole, the valve cover is installed on the upper surface of the valve block, the valve block and the valve cover jointly constitute a valve box body, an installation space is formed between the inside of the valve cover and the upper surface of the valve block, the hydraulic valve group, the plurality of pressure sensors, the water leakage alarm and the two-position two-way on-off valve are jointly installed on the upper surface of the valve block in the installation space.

[0005] The valve block is a hollow structure with a flow channel pipeline reserved inside, the flow channel pipeline comprises an oil inlet path communicated with an oil inlet pipe joint, an oil return path communicated with an oil return pipe joint and a plurality of control oil paths communicated with a plurality of control oil path joints, the oil inlet path, the oil return path and the plurality of control oil paths jointly form a hydraulic circuit.

[0006] The oil inlet pipe joint and the oil return pipe joint are installed in parallel on the right side surface of the valve block, the plurality of control oil pipe joints are installed on the edge of the bottom surface of the valve block, the oil inlet pipe joint is used to introduce the pressure oil of an external hydraulic system into the valve box, the oil return pipe joint is used to recycle the oil flow returned from the valve box to the external hydraulic system, and the plurality of control oil pipe joints are used to be connected with the external hydraulic actuator.

[0007] The valve box pressure compensator and the flow channel pipeline pressure compensator are connected with the valve box body through the valve box pressure compensator oil pipe joint and the flow channel pipeline pressure compensator oil pipe joint respectively, the valve box pressure compensator oil pipe joint and the exhaust hole are symmetrically arranged at the center position of the front surface of the valve cover, and the flow channel pipeline pressure compensator oil pipe joint is located on the right side of the bottom surface of the valve block.

[0008] According to an embodiment of the present application, the hydraulic valve group is composed of a plurality of stacked hydraulic valves, the plurality of stacked hydraulic valves are arranged in sequence from left to right in the middle of the upper surface of the valve block, and the plurality of pressure sensors, the water leakage alarm and the two-position two-way on-off valve are respectively installed on the upper edge, the lower edge and the right edge of the upper surface of the valve block.

[0009] According to an embodiment of the present application, the other end of the flow channel pipeline pressure compensator oil pipe joint is connected to the oil return circuit, the left and right valve cores of the two-position two-way on-off valve are connected between the oil return circuit and the flow channel pipeline pressure compensator oil pipe joint, and the flow channel pipeline pressure compensator is used to compensate the flow channel pipeline pressure when the valve box is disconnected with the external hydraulic system. When the valve box is connected with the external hydraulic system to perform work, the left valve core of the two-position two-way on-off valve works, the circuit in which the flow channel pipeline pressure compensator is located is cut off, high-pressure oil in work is prevented from entering the flow channel pipeline pressure compensator, and pressure compensation is provided for the flow channel by the external hydraulic system; when the valve box body is disconnected with the external hydraulic system, the right valve core of the two-position two-way on-off valve works, the circuit in which the flow channel pipeline pressure compensator is located is turned on, and the external pressure of the flow channel and the valve box body is balanced.

[0010] According to an embodiment of the present application, the first water sealing plug and the second water sealing plug are symmetrically installed at the center position of the top surface of the valve cover, and the control instructions of the external controller and the data of the valve box body are transmitted through the water sealing plug.

[0011] According to an embodiment of the present application, the external shape of the valve cover is matched with the shapes of the hydraulic valve group, the water leakage alarm, the plurality of pressure sensors and the two-position two-way on-off valve in the installation space, and the design can effectively reduce the volume of the valve box body and further meet the compactness requirement of deep-sea equipment.

[0012] According to one embodiment of the present application, the valve cover is integrally formed by a metal mold to meet the irregular shape design thereof.

[0013] According to one embodiment of the present application, 1 / 2-2 / 3 of the plurality of stacked hydraulic valves are replaced by a plurality of plug-in hydraulic valves, and the plurality of plug-in hydraulic valves are arranged at the center position of the front face and / or the back face of the valve block. Since the plug-in hydraulic valve requires a smaller internal installation space and has a lighter weight, the combination of the plug-in and stacked hydraulic valves greatly reduces the installation space between the valve block and the valve cover compared with the full stacked hydraulic valve, and further reduces the overall weight of the valve tank, meeting the lightweight requirement of the underwater hydraulic system.

[0014] According to one embodiment of the present application, the plurality of pressure sensors are used to measure the pressure in the hydraulic circuit.

[0015] Overall, compared with the prior art, the above technical solutions conceived by the present application mainly have the following technical advantages:

[0016] 1. The present application provides an independent flow channel pipeline pressure compensation circuit in the valve tank body, which can still protect the internal pipeline of the valve tank from the deep sea water pressure when the valve tank is disconnected with the external hydraulic system, and does not affect the normal operation when the valve tank is connected with the external hydraulic system. In this way, the deep sea hydraulic valve tank can be powered by moving the oil source when it needs to operate, and the oil source is disconnected with the valve tank after the operation is completed.

[0017] 2. The valve cover designed in the present application is a special-shaped valve cover, which compresses the excess space between the valve cover and the valve block, reduces the overall volume of the hydraulic valve tank, reduces the weight of the valve block, and reduces the weight of the entire valve tank. The valve cover and the valve block do not need to be made into a pressure-resistant structure, and the hydraulic valve group adopts a combination of external plug-in and internal stacked, which further reduces the internal space of the valve tank body and the overall weight of the valve tank. It is very beneficial for the compactness and lightweight requirement of deep sea equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of embodiment 1 of the present application.

[0019] Figure 2 is a structural schematic diagram of embodiment 2 of the present application without a valve cover.

[0020] Figure 3 is a bottom view of embodiment 2 of the present application.

[0021] Figure 4 is a hydraulic principle diagram of the flow channel pipeline pressure compensation of embodiments 1-2 of the present application.

[0022] Wherein: 1 valve cover, 2 valve block, 3 first water-tight connector, 4 second water-tight connector, 5 valve box pressure compensator oil pipe joint, 6 exhaust hole, 7 oil inlet pipe joint, 8 oil return pipe joint, 9 hydraulic valve group, 10 plug-in hydraulic valve, 11 pressure sensor, 12 water leakage alarm, 13 flow channel pipeline pressure compensator oil pipe joint, 14 two-position two-way on-off valve, 15 control oil pipe joint, P is the oil inlet line, T is the oil return line, A and B are two exemplary control oil lines in the plurality of control oil lines. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and are not used to limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0024] The present application will be further described below with reference to the drawings.

[0025] Example 1

[0026] A deep-sea hydraulic valve box with independent flow channel pipeline pressure compensation function, comprising a valve cover 1, a valve block 2, the valve cover 1 and the valve block 2 together constitute a valve box body, the valve cover and the valve block are made of materials resistant to seawater corrosion, an installation space is formed between the upper surfaces of the valve cover 1 and the valve block 2, the valve block 2 and the valve cover 1 are connected by internal hexagonal bolts on the edge, and a sealing ring is provided between the valve block 1 and the valve cover 2 to isolate seawater from the outside. 36 stacked hydraulic valves 9 are installed in the middle of the upper surface of the valve block 2 from left to right by internal hexagonal bolts, a plurality of pressure sensors 11 are installed side by side on the upper side of the upper surface of the valve block 2 by threads, a water leakage alarm 12 is fixed on the lower side of the upper surface of the valve block by screws, and a two-position two-way on-off valve 14 is fixed on the right side of the upper surface of the valve block by screws.

[0027] The inside of the valve block 2 is a hollow structure with a reserved flow channel pipeline, the flow channel pipeline includes an oil inlet line communicated with the oil inlet pipe joint 7, an oil return line communicated with the oil return pipe joint 8, and a plurality of control oil lines communicated with a plurality of control oil pipe joints 15, the oil inlet line, the oil return line and the plurality of control oil lines together form a hydraulic circuit, the oil inlet pipe joint 7 and the oil return pipe joint 8 are installed in parallel on the right side surface of the valve block 2, and the plurality of control oil pipe joints 15 are installed on the edge of the bottom surface of the valve block 2. A plurality of stacked hydraulic valves are connected with the oil inlet line, the oil return line and the plurality of control oil lines, the power supply and data transmission of the plurality of stacked hydraulic valves 9 are transmitted to the external control system through the first water-tight connector 3 and the second water-tight connector 4 symmetrically arranged on the upper surface of the valve cover. The plurality of pressure sensors 11 are used to measure the pressure in the hydraulic circuit, such as the pressure in the oil inlet line, the oil return line and / or the plurality of control oil lines.

[0028] Valve box body is connected with external hydraulic system through oil inlet pipe joint 7 and oil return pipe joint 8. Valve box pressure compensator oil pipe joint 5 is connected with valve box pressure compensator (not shown) through oil pipe, and flow passage pipe line pressure compensator oil pipe joint 13 is connected with flow passage pipe line pressure compensator (not shown) through oil pipe. Valve box pressure compensator oil pipe joint 5 and exhaust hole 6 are symmetrically located at the center of the front surface of the valve cover, and flow passage pipe line pressure compensator oil pipe joint 13 is located at the right side of the bottom surface of the valve block. When the valve box is filled with oil, the air in the valve box is discharged through the exhaust hole 6, and the valve cover does not need to bear excessive pressure after the valve cover pressure is compensated by the valve box pressure compensator, so a thin-walled structure that is not pressure-resistant can be used, thereby reducing the volume and weight.

[0029] Specifically, the other end of the flow passage pipe line pressure compensator oil pipe joint is connected to the oil return line, and the left and right valve cores of the two-position two-way on-off valve 14 are connected between the oil return line and the flow passage pipe line pressure compensator oil pipe joint. The flow passage pipe line pressure compensator is used to compensate the hydraulic pipe line pressure when the valve box body is disconnected from the external hydraulic system.

[0030] The outer shape of the valve cover 1 is in contact with the outer surfaces of the components distributed in the installation space of the valve box body. This design can effectively utilize the space and save the volume. In addition, the valve block 2 is designed to be hollow and light in weight, and a part of the excess entity is removed, thereby reducing the overall weight of the valve box.

[0031] Example 2

[0032] As shown in Figures 1 to 3 A deep-sea hydraulic valve box with independent flow passage pipe line pressure compensation function includes a valve cover 1, a valve block 2, the valve cover 1 and the valve block 2 together form a valve box body, the valve cover and the valve block are made of a material resistant to seawater corrosion, an installation space is formed between the upper surfaces of the valve cover 1 and the valve block 2, the valve block 2 and the valve cover 1 are connected by internal hexagonal bolts at the edges, and a sealing ring is arranged between the valve cover 1 and the valve block 2 to isolate seawater. Twelve stacked hydraulic valves 9 are installed in the middle of the upper surface of the valve block 2 from left to right by internal hexagonal bolts, and another twelve plug-in hydraulic valves 10 are respectively installed at the center of the front surface of the valve block 2 and the center of the back surface of the valve block 2. A plurality of pressure sensors 11 are installed side by side on the upper side of the upper surface of the valve block 2 by threads, a water leakage alarm 12 is fixed on the lower side of the upper surface of the valve block by screws, and a two-position two-way on-off valve 14 is fixed on the right side of the upper surface of the valve block by screws. Since the internal installation space required by the plug-in hydraulic valve is smaller and the weight is lighter, the combination of plug-in and stacked hydraulic valves greatly reduces the installation space between the valve block and the valve cover compared with the all-stacked hydraulic valves, and further reduces the overall weight of the valve box, which is more in line with the lightweight requirements of underwater hydraulic systems.

[0033] The valve block 2 is internally hollowed out to reserve flow channel pipelines, which include an oil inlet channel communicated with the oil inlet pipe joint 7, an oil return channel communicated with the oil return pipe joint 8, and a plurality of control oil channels communicated with the plurality of control oil pipe joints 15. The oil inlet channel, the oil return channel, and the plurality of control oil channels jointly form a hydraulic circuit. The oil inlet pipe joint 7 and the oil return pipe joint 8 are installed in parallel on the right side surface of the valve block 2. The plurality of control oil pipe joints 15 are installed on the edge of the bottom surface of the valve block 2. A plurality of stacked hydraulic valves are connected with the oil inlet channel, the oil return channel, and the plurality of control oil channels. The power supply and data transmission of the plurality of stacked hydraulic valves 9 are transmitted to an external control system through the first and second watertight connectors 4 symmetrically arranged on the upper surface of the valve cover. The plurality of pressure sensors 11 are used to measure the pressure in the hydraulic circuit, such as the pressure in the oil inlet channel, the oil return channel, and / or the plurality of control oil channels.

[0034] The valve block body is connected with an external hydraulic system through the oil inlet pipe joint 7 and the oil return pipe joint 8. The valve block pressure compensator pipe joint 5 is connected with a valve block pressure compensator (not shown in the figure) through an oil pipe. The flow channel pipeline pressure compensator pipe joint 13 is connected with a flow channel pipeline pressure compensator (not shown in the figure) through an oil pipe. The valve block pressure compensator pipe joint 5 and the exhaust hole 6 are symmetrically located at the center of the front surface of the valve cover. The flow channel pipeline pressure compensator pipe joint 13 is located on the right side of the bottom surface of the valve block. When the valve block is filled with oil, the air in the valve block is discharged through the exhaust hole 6. The valve cover pressure is compensated by the valve block pressure compensator, so the valve cover does not need to bear excessive pressure. Therefore, a thin-walled structure that is not pressure-resistant can be used, which reduces the volume and weight.

[0035] Specifically, the other end of the flow channel pipeline pressure compensator pipe joint is connected to the oil return channel. The left and right valve cores of the two-position two-way on-off valve 14 are connected between the oil return channel and the flow channel pipeline pressure compensator pipe joint. The flow channel pipeline pressure compensator is used to compensate the flow channel pipeline pressure when the valve block body is disconnected from the external hydraulic system.

[0036] The external shape of the valve cover 1 is fitted with the outer surfaces of the components distributed in the valve block body mounting space. This design can effectively utilize the space and save the volume. In addition, the valve block 2 is hollowed out for weight reduction, and a part of the excess entity is removed, which reduces the overall weight of the valve block.

[0037] As shown in FIG. 1, Figure 4 The working principle of the embodiment 1-2 of the present application is as follows: Figure 4The P path shown in the middle is an oil inlet path, the T path is an oil return path, and the A and B paths are exemplary control oil paths. First, the hydraulic oil of an external hydraulic system is introduced into the valve box through the oil inlet pipe joint 7, introduced into an external hydraulic actuator by the A and B control oil paths, and finally introduced back into the external hydraulic system through the oil return pipe joint 8. A pressure sensor reads a pressure signal in real time, a water leakage alarm detects whether there is water leakage, and the obtained signals are transmitted to an external control system through the first and second water-tight connectors 3 and 4. The control signals sent by the external control system are also transmitted to the valve box body through the water-tight connectors 3 and 4, and the hydraulic valve group (9 or 9 and 10) and the two-position two-way on-off valve 14 in the valve box body are controlled to perform corresponding actions. When the valve box body is connected with the external hydraulic system, the left valve core of the two-position two-way on-off valve 14 works, at this time, the passage between the flow passage pipe pressure compensator and the T path of the valve box body is one-way cut-off, and the high-pressure hydraulic oil of the valve box cannot flow into the flow passage pipe pressure compensator, so as to protect the flow passage pipe pressure compensator from being burst; when the valve box stops working and is disconnected with the external hydraulic system, the right valve core of the on-off valve works, at this time, the passage between the flow passage pipe pressure compensator and the T path of the valve box body is bidirectional communication, and the pressure compensation principle is used to continue to balance the pipe pressure of the valve box and the external seawater pressure, so as to prevent the pipe from being damaged by seawater.

[0038] The present application provides a deep-sea hydraulic valve box with independent flow passage pipe pressure compensation function, which can be widely applied to deep-sea operation equipment. In the deep-sea hydraulic valve box of the present application, due to the design of the independent flow passage pipe pressure compensation circuit, the valve box can be separated from the oil source, the mobile oil source is connected with the valve box for oil supply during operation, and the valve box is disconnected with the mobile oil source when not in operation, so that the mobile oil source can be moved to other positions for oil supply.

[0039] Those skilled in the art will easily understand that the above description is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A deep-sea hydraulic valve box with independent flow channel pipeline pressure compensation function, characterized in that, The deep-sea hydraulic valve box includes a valve cover (1), a valve block (2), a hydraulic valve assembly (9), multiple pressure sensors (11), a water leakage alarm (12), a two-position two-way switch valve (14), a valve box pressure compensator, a flow channel pipeline pressure compensator, and an exhaust port (6). The valve cover (1) is installed on the upper surface of the valve block (2). The valve block (2) and the valve cover (1) together constitute the valve box body. An installation space is formed between the inside of the valve cover (1) and the upper surface of the valve block (2). The hydraulic valve assembly (9), multiple pressure sensors (11), water leakage alarm (12), and two-position two-way switch valve (14) are all installed on the upper surface of the valve block (2) in the installation space. The valve block (2) is a hollow structure with a pre-reserved flow channel pipeline inside. The flow channel pipeline includes an oil inlet line connected to the oil inlet pipe joint, a return line connected to the oil return pipe joint, and multiple control oil lines connected to multiple control oil pipe joints. The oil inlet line, the return line, and the multiple control oil lines together form a hydraulic circuit. The inlet pipe connector (7) and the return pipe connector (8) are installed in parallel on the right side of the valve block. The multiple control pipe connectors (15) are installed on the bottom edge of the valve block. The inlet pipe connector (7) is used to introduce the pressure oil of the external hydraulic system into the valve box. The return pipe connector (8) is used to recover the oil flowing back from the valve box to the external hydraulic system. The multiple control pipe connectors (15) are used to connect with the external hydraulic actuator. The hydraulic valve group (9) is connected to the hydraulic circuit inside the valve block (2). The valve box pressure compensator and the flow channel pipeline pressure compensator are respectively connected to the valve box body through the valve box pressure compensator oil pipe joint (5) and the flow channel pipeline pressure compensator oil pipe joint (13). The valve box pressure compensator oil pipe joint (5) and the exhaust hole (6) are symmetrically arranged at the center of the front of the valve cover (1). The flow channel pipeline pressure compensator oil pipe joint (13) is located on the right side of the bottom surface of the valve block (2). The other end of the oil pipe joint (13) of the flow channel pipeline pressure compensator is connected to the return oil line. The left and right valve cores of the two-position two-way switch valve (14) are connected between the return oil line and the flow channel pipeline pressure compensator. The flow channel pipeline pressure compensator is used to compensate the flow channel pipeline pressure when the valve box is disconnected from the external hydraulic system. The valve box is separated from the oil source. During operation, the mobile oil source is connected to the valve box to supply oil. When not in operation, the valve box is disconnected from the mobile oil source, and the mobile oil source is moved to another position to supply oil. When the valve box stops working and is disconnected from the external hydraulic system, the right valve core of the two-position two-way switch valve (14) is working. At this time, the passage between the flow channel pipeline pressure compensator and the valve box body return oil circuit is bidirectionally connected. The pressure compensation principle is used to continue to balance the valve box pipeline and the external seawater pressure to prevent the pipeline from being squeezed and damaged by seawater.

2. The deep-sea hydraulic valve box according to claim 1, characterized in that, The hydraulic valve group (9) consists of multiple stacked hydraulic valves arranged from left to right in the middle of the upper surface of the valve block (2). The multiple pressure sensors (11), water leakage alarm (12), and two-position two-way switch valve (14) are respectively installed on the upper edge, lower edge and right edge of the upper surface of the valve block (2).

3. The deep-sea hydraulic valve box according to claim 1, characterized in that, A first watertight connector (3) and a second watertight connector (4) are symmetrically installed at the center of the top surface of the valve cover (1). The control commands of the external controller and the data of the valve box body are transmitted through the watertight connectors.

4. The deep-sea hydraulic valve box according to claim 1, characterized in that, The internal shape of the valve cover (1) fits the shape of the hydraulic valve group (9), the water leakage alarm (12), the multiple pressure sensors (11), and the two-position two-way switch valve (14) in the installation space.

5. The deep-sea hydraulic valve box according to claim 4, characterized in that, The valve cover (1) is integrally formed by a metal mold.

6. The deep-sea hydraulic valve box according to claim 2, characterized in that, Replace 1 / 2 to 2 / 3 of the plurality of stacked hydraulic valves with a plurality of cartridge hydraulic valves (10), and place the plurality of cartridge hydraulic valves (10) at the center of the front and / or back of the valve block (2).

7. The deep-sea hydraulic valve box according to claim 1, characterized in that, The plurality of pressure sensors (11) are used to measure the pressure in the hydraulic circuit.

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