Large-flow buoyancy adjusting integrated valve group

Abstract

The invention discloses a large-flow buoyancy adjusting integrated valve group which comprises a base, a driving motor, a sea water pump, an expansion joint, a safety valve, a floating and sinking assembly and a sensing assembly, a liquid flow channel is formed in the base, the safety valve is arranged on the base, and the safety valve communicates with the liquid flow channel; the sensing assembly is configured to detect the pressure in the liquid flow channel and send the pressure to the controller so as to control the safety valve to be opened or closed. The driving motor is arranged on the base and connected with the sea water pump, the sea water pump is connected with the floating and sinking assembly through the expansion joint, the floating and sinking assembly is arranged on the base, and the floating and sinking assembly is configured to be communicated with the external sea water environment and the water ballast space so that the submersible vehicle can float or suspend or sink. According to the large-flow buoyancy adjusting integrated valve group, the pressure in the flow channel is detected in real time through the sensing assembly, and it is ensured that when the submersible vehicle is in suspension operation, breakage of the expansion joint caused by liquid leakage is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of underwater equipment, in particular to a large-flow buoyancy adjusting integrated valve group. BACKGROUND

[0002] With the development of ocean exploration science, the demand for deep sea exploration, investigation and development of human beings becomes more and more urgent. The manned submersible is an important device for carrying underwater operating personnel and underwater operating equipment to quickly and accurately reach various complex marine environments and perform efficient underwater operations. It is an important technical means for developing and utilizing marine resources. The buoyancy adjusting system is a key control system for ensuring the operating posture and stable hovering capability of the submersible and the thrust in the vertical direction. The integrated valve group is the core flow control element of the buoyancy adjusting system. When the buoyancy adjusting system works, the upper computer gives the water injection and drainage command, the pump motor drives the seawater pump to operate, and the water medium exchange between the ballast water tank and the seawater environment is completed by controlling the hydraulic bridge circuit composed of the external integrated valve group, so as to realize the buoyancy adjustment of the submersible.

[0003] Since the submersible does not absorb water or discharge water in the hovering state, all electric ball valves need to be closed at the same time to be in the pressure maintaining state, but the integrated valve group is in the pressure maintaining state for a long time, which causes the electric ball valve to leak, the water flows into the expansion joint, and the expansion joint is easily damaged and broken for a long time. SUMMARY

[0004] To solve the related technical problems, the purpose of the present application is to provide a large-flow buoyancy adjusting integrated valve group to solve the above problems.

[0005] To achieve the above purpose, the embodiments of the present application adopt the following technical solutions: A large-flow buoyancy adjusting integrated valve group comprises a base, a drive motor, a seawater pump, an expansion joint, a safety valve, a float-sink assembly and a sensing assembly, wherein: The base is internally provided with a liquid flow channel, and the safety valve is arranged on the base and communicates with the liquid flow channel; The sensing assembly is arranged on the base and is configured to detect the pressure in the liquid flow channel and send it to the controller to control the opening or closing of the safety valve; The drive motor is arranged at a first end of the base along a first horizontal direction, the driving end of the drive motor is connected with the seawater pump, the seawater pump is connected with the float-sink assembly through the expansion joint, the float-sink assembly is arranged at a second end of the base along the first horizontal direction, and the float-sink assembly is configured to communicate the external seawater environment with the ballast water tank to make the submersible float or hover or sink.

[0006] Optionally, the base comprises a base, a first valve block, a second valve block and a third valve block, the first valve block, the second valve block and the third valve block are sequentially and spaced apart in the second horizontal direction on the base, the first valve block, the second valve block and the third valve block are provided with the first mounting hole, the second valve block is provided with the second mounting hole, and the safety valve is arranged on the second mounting hole.

[0007] Optionally, the sensing assembly comprises at least three pressure sensors, and the pressure sensors are arranged on the first mounting hole.

[0008] Optionally, the floating and sinking assembly comprises a first electric ball valve, a second electric ball valve, a third electric ball valve and a fourth electric ball valve, the first electric ball valve and the second electric ball valve are arranged on the first side of the base along the first horizontal direction, and the third electric ball valve and the fourth electric ball valve are arranged on the second side of the base along the first horizontal direction.

[0009] Optionally, the safety valve comprises a valve body and an adjusting knob, a valve cavity is arranged in the valve body, a valve core is arranged in the valve cavity, the adjusting knob is threadedly connected with the valve body, an adjusting rod is arranged on the adjusting knob, a threaded plug is threadedly connected in the valve cavity, a first O-shaped ring is arranged between the threaded plug and the valve body, an avoiding hole is arranged on the threaded plug, the adjusting rod is arranged in the valve cavity through the avoiding slot, the adjusting rod is connected with the valve core through a spring, a first mounting hole is arranged on the P port of the valve body, a second O-shaped ring is arranged in the first mounting hole, a second mounting hole is arranged on the T port of the valve body, a third O-shaped ring is arranged in the second mounting hole, the P port of the valve body is connected with the P port of the second valve block, and the T port of the valve body is connected with the T port of the second valve block.

[0010] Optionally, the seawater pump and the driving motor are located on the same axis and are independent of each other.

[0011] Optionally, the inlet of the seawater pump is connected with the second valve block through an expansion joint, and the outlet of the seawater pump is connected with the second valve block through a pipeline.

[0012] The beneficial effects of the present application are that, compared with the prior art, the large-flow buoyancy adjusting integrated valve group provided by the present application has the following beneficial effects: 1. The sensing assembly detects the pressure in the flow channel in real time, when the pressure reaches the critical value, the controller sends a signal and alarms, when the pressure in the flow channel reaches the preset value, the safety valve automatically opens and closes to discharge the leaked liquid at the expansion joint, and the floating and sinking assembly controls the injection and discharge of the ballast tank liquid, thereby ensuring the stability of the underwater vehicle to realize the three working postures of floating, suspending and sinking, and avoiding the rupture of the expansion joint caused by the leakage of liquid; 2. The driving motor, the seawater pump, the safety valve, the floating and sinking assembly and the sensing assembly are integrated in the base, and the liquid flow channel in the base is used to replace the complex external pipeline, thereby greatly reducing the leakage risk and pipeline resistance, and improving the system integration and operation reliability; 3. The seawater pump and the driving motor are coaxially arranged to ensure the coaxiality and efficiency of power transmission, reduce power loss, and improve the large-flow conveying capacity of the seawater pump; the independent structure design facilitates the maintenance, repair and replacement of the motor or the pump body, and the valve group does not need to be disassembled as a whole, thereby reducing the operation and maintenance cost and downtime; meanwhile, the coaxial design makes the structure compact, saves installation space, adapts to the limited layout space requirement of the submersible, and improves the space adaptability of the valve group. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate and understand the technical solutions in the embodiments of the present application, the drawings needed to be used in the background art and embodiment description of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the contents of the embodiments of the present application and the drawings by those skilled in the art without creative labor.

[0014] Figure 1 is a structural schematic diagram of a large-flow buoyancy adjusting integrated valve group provided by the embodiments of the present application; Figure 2 is a top view of a large-flow buoyancy adjusting integrated valve group provided by the embodiments of the present application; Figure 3 is a sectional structural schematic diagram of a safety valve in a large-flow buoyancy adjusting integrated valve group provided by the embodiments of the present application; Figure 4 is a sectional view of the installation of a safety valve and a base in a large-flow buoyancy adjusting integrated valve group provided by the embodiments of the present application; Figure 5 is a sectional view of a base in a large-flow buoyancy adjusting integrated valve group provided by the embodiments of the present application. DETAILED DESCRIPTION

[0015] The present application will be further described in detail below with reference to the drawings.

[0016] For the purposes of the present invention, a more complete description of which will follow, reference will be made to the accompanying drawings. The preferred embodiments of the present invention are illustrated in the drawings. It should be noted, however, that the present invention can be practiced in many different forms and should not be considered limited to the embodiments set forth in the attached drawings. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. It should be noted that when a member is referred to as being "fixed" to another member, it can be directly on the other member or intervening members can also be present. When a member is referred to as being "connected" to another member, it can be directly connected to the other member or intervening members can also be present. The terms "vertical", "horizontal", "left", "right", and similar expressions as used herein are for illustrative purposes only and are not intended to be limiting. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0017] Referring to Figures 1 to 4 As shown in the drawings, the embodiment provides a large-flow buoyancy adjusting integrated valve group, which comprises a base, a driving motor 1, a seawater pump 2, an expansion joint 3, a safety valve 12, a float-sink assembly and a sensing assembly. The base is internally provided with a liquid flow channel. The safety valve 12 is arranged on the base and is in communication with the liquid flow channel. The sensing assembly is arranged on the base and is configured to detect the pressure in the liquid flow channel and send the information to a controller to control the safety valve 12 to open or close. The driving motor 1 is arranged at a first end of the base along a first horizontal direction. The driving end of the driving motor 1 is connected to the seawater pump 2. The seawater pump 2 is connected to the float-sink assembly through the expansion joint 3. The float-sink assembly is arranged at a second end of the base along the first horizontal direction. The float-sink assembly is configured to communicate the external seawater environment with the ballast tank so as to make the submersible float, suspend or sink.

[0018] Specifically, the integrated valve group is in a pressure maintaining state for a long time. The leakage of the electric ball valve causes liquid to flow into the expansion joint 3, the second valve block 13 and the inlet of the safety valve 12, which causes the pressure at the expansion joint 3 to rise. The sensing assembly detects the pressure rise and sends the information to the controller. The controller controls the valve core 12.2 of the safety valve 12 to open so as to make the liquid flow into the first valve block 8 through the safety valve 12 and the outlet of the second valve block 13, and then flow into the water tank.

[0019] It can be seen that by integrating the driving motor 1, the seawater pump 2, the safety valve 12, the floating and sinking assembly and the sensing assembly in the base, and replacing the complex external pipeline with the liquid flow channel inside the base, the leakage risk and the pipeline resistance are greatly reduced, and the system integration and operation reliability are improved; the sensing assembly detects the pressure in the flow channel in real time, and when the pressure reaches the critical value, the controller sends a signal and alarms; when the pressure in the flow channel reaches the preset value, the safety valve 12 is automatically opened and closed to discharge the liquid leakage at the expansion joint 3, and the floating and sinking assembly controls the injection and discharge of the ballast tank liquid, which ensures the stability of the submarine to realize the three working postures of floating, suspending and sinking, and avoids the rupture of the expansion joint 3 caused by liquid leakage.

[0020] As an embodiment, the base comprises a base, a first valve block 8, a second valve block 13 and a third valve block 4, the first valve block 8, the second valve block 13 and the third valve block 4 are sequentially and spaced apart in the second horizontal direction on the base, and the first valve block 8, the second valve block 13 and the third valve block 4 are all provided with a first mounting hole 12.8, the second valve block 13 is provided with a second mounting hole 12.10, and the safety valve 12 is arranged on the second mounting hole 12.10.

[0021] Specifically, the first mounting hole 12.8 is a threaded hole.

[0022] Specifically, the base is provided with a hole 4.1, a hole 13.1 and a hole 8.1 corresponding to the mounting positions of the first valve block 8, the second valve block 13 and the third valve block 4.

[0023] It can be seen that the base adopts the modular split design of the base, the first valve block 8, the second valve block 13 and the third valve block 4, and the valve blocks are orderly arranged in the second horizontal direction, which not only facilitates the assembly, debugging and later maintenance of the components, but also optimizes the layout of the liquid flow channel, reduces the pressure drop caused by the bending of the flow channel, and ensures the large-flow conveying efficiency.

[0024] As an embodiment, the sensing assembly comprises at least three pressure sensors, and the pressure sensors are arranged on the first mounting hole 12.8.

[0025] Specifically, the sensing assembly comprises a first pressure sensor 14, a second pressure sensor 11 and a third pressure sensor 10, and the first pressure sensor 14, the second pressure sensor 11 and the third pressure sensor 10 are respectively arranged in the first mounting hole 12.8 of the first valve block 8, the second valve block 13 and the third valve block 4.

[0026] Specifically, the first pressure sensor 14 and the second pressure sensor 11 alarm when a pressure difference occurs, the third pressure sensor 10 and the second pressure sensor 11 alarm when a pressure difference occurs, and the pressure information is transmitted to the controller when alarming.

[0027] It can be seen that the plurality of pressure sensors are arranged in the first mounting hole 12.8, realizing multi-point pressure detection of the key positions of the liquid flow channel. Compared with single-point detection, more comprehensive and accurate pressure data can be obtained, effectively avoiding control failure caused by single sensor failure or detection error; the controller can comprehensively judge the flow channel pressure state based on multiple sets of pressure data, and then accurately control the opening and closing of the safety valve 12 and the action of the floating and sinking assembly, improving the stability and reliability of the buoyancy adjustment, and ensuring the smooth posture of the submarine.

[0028] As an embodiment, the floating and sinking assembly includes a first electric ball valve 9, a second electric ball valve 5, a third electric ball valve 6 and a fourth electric ball valve 7. The first electric ball valve 9 and the second electric ball valve 5 are arranged on the first side of the base along the first horizontal direction, and the third electric ball valve 6 and the fourth electric ball valve 7 are arranged on the second side of the base along the first horizontal direction.

[0029] Specifically, the driver and the controller are connected with the socket through the cable. The driver and the controller are connected with the driving motor 1, the driver, the first pressure sensor 14, the second pressure sensor 11 and the third pressure sensor 10 through the cable and the socket respectively. The driving motor 1 is externally powered by an external DC power supply. The DC power input by the power unit is converted into AC power, which is supplied to the driving motor 1 after being filtered by the filter. The driving motor 1 converts the electric energy into rotary mechanical energy and delivers it to the seawater pump 2. During the operation of the driver, the control unit feeds back the real-time collected speed, steering and fault alarm state information to the controller, and adjusts the output of the power unit according to the controller control instruction and the driving motor 1 state information, realizing accurate control of the driving motor 1. The controller realizes the opening and closing of the first electric ball valve 9, the second electric ball valve 5, the third electric ball valve 6 and the fourth electric ball valve 7 and the switching control of the water injection and drainage working conditions by controlling the driver.

[0030] It can be seen that the four electric ball valves of the floating and sinking assembly are symmetrically arranged on both sides, forming a multi-path and switchable liquid flow control system. Through the cooperation of multiple valves, large flow rate injection or discharge can be realized quickly. The two-side layout makes the flow channel force balanced, reduces the vibration caused by fluid impact, and at the same time reduces the flow channel resistance, further improving the large flow rate regulation efficiency. The electric ball valve has rapid response and high control precision, can quickly switch the working state, and ensures the timeliness and accuracy of the submarine posture adjustment.

[0031] As an implementation form, the safety valve 12 comprises a valve body 12.1 and an adjusting knob 12.7, the inside of the valve body 12.1 is provided with a valve cavity, a valve core 12.2 is arranged in the valve cavity, the adjusting knob 12.7 is threadedly connected with the valve body 12.1, the adjusting knob 12.7 is provided with an adjusting rod 12.6, a screw plug 12.5 is threadedly connected in the inside of the valve cavity, a first O-shaped ring 12.4 is arranged between the screw plug 12.5 and the valve body 12.1, the screw plug 12.5 is provided with a relief hole, the adjusting rod 12.6 is arranged in the valve cavity through the relief groove, the adjusting rod 12.6 is connected with the valve core 12.2 through a spring 12.3, a first mounting hole 12.8 is arranged in the P port 12.11 of the valve body 12.1, a second O-shaped ring 12.12 is arranged in the first mounting hole 12.8, a second mounting hole 12.10 is arranged in the T port 12.9 of the valve body 12.1, a third O-shaped ring 12.13 is arranged in the second mounting hole 12.10, the P port 12.11 of the valve body 12.1 is connected with the P port of the second valve block 13, and the T port 12.9 of the valve body 12.1 is connected with the T port of the second valve block 13.

[0032] It can be seen that the multiple O-shaped rings in the inside of the valve body 12.1 form a sealing system, which greatly improves the sealing performance, effectively prevents seawater from leaking into the inside of the submersible or the pressure loss in the flow channel, and ensures the safety of the operation of the submersible; the elastic cooperation of the valve core 12.2 and the spring 12.3 ensures that the safety valve 12 quickly and sensitively acts when the pressure reaches the set value, realizes overload pressure relief, avoids damage to the seawater pump 2, the valve group and other key components due to the excessively high pressure in the flow channel, and prolongs the service life of the system.

[0033] As an implementation form, the seawater pump 2 and the driving motor 1 are located on the same axis and are independent of each other.

[0034] It can be seen that the coaxial layout of the seawater pump 2 and the driving motor 1 can ensure the coaxial degree and efficiency of power transmission, reduce power loss, and improve the large-flow conveying capacity of the seawater pump 2; the independent structure design facilitates the maintenance, repair and replacement of the motor or the pump body individually, without the need to disassemble the valve group as a whole, thereby reducing the operation and maintenance cost and downtime; at the same time, the coaxial design makes the structure of the two compact, saves installation space, adapts to the limited layout space requirement in the inside of the submersible, and improves the space adaptability of the valve group.

[0035] As an implementation form, the inlet of the seawater pump 2 is connected with the second valve block 13 through the expansion joint 3, and the outlet of the seawater pump 2 is connected with the second valve block 13 through the pipeline.

[0036] It can be seen that the seawater pump 2 inlet is connected with the second valve block 13 through the expansion joint 3, which can effectively absorb the vibration generated during the operation of the pump body and the deformation caused by the thermal expansion and contraction of the fluid, reduce the impact and stress damage to the valve block and pipeline, and improve the overall operation stability of the system; the flexible connection of the expansion joint 3 can optimize the inlet flow field, reduce the fluid resistance, and ensure the large-flow conveying efficiency; the expansion joint 3 is used to connect the seawater pump 2 inlet and the second valve block 13 seawater pump 2 inlet, which avoids the influence of the coaxiality of the connection during the installation of the seawater pump 2 inlet and the second valve block 13 seawater pump 2 inlet; the outlet is connected by a pipeline, which is reliable and has excellent sealing performance, avoids seawater leakage, and has flexible pipeline layout, which is convenient for adapting to the space trend inside the submarine, and is convenient for disassembly and maintenance, and reduces the difficulty of later operation and maintenance.

[0037] The specific working principle of the above large-flow buoyancy adjusting integrated valve group is as follows: In the hovering state of the submarine, the first electric ball valve 9, the second electric ball valve 5, the third electric ball valve 6 and the fourth electric ball valve 7 are closed at the same time, and the internal part of the integrated valve group is in a pressure maintaining state; when the first electric ball valve 9, the second electric ball valve 5, the third electric ball valve 6 and the fourth electric ball valve 7 leak, water flows into the expansion joint 3; when the pressure in the expansion joint 3 is too large, the safety valve 12 is opened, and water flows into the water tank through the safety valve 12 to reduce the water pressure in the expansion joint 3; at the same time, when the internal pressure of the expansion joint 3 and the first valve block 8, the second valve block 13 and the third valve block 4 is unbalanced, an alarm is given.

[0038] In the embodiments disclosed in the present application, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense. For example, "connecting" can be fixed connection, detachable connection or integral connection; "connecting" can be direct connection or indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments disclosed in the present application can be understood according to the specific circumstances.

[0039] The above embodiments only illustrate the basic principles and characteristics of the present application, and the present application is not limited by the above examples. Without departing from the spirit and scope of the present application, various changes and modifications can be made to the present application, and these changes and modifications all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A large-flow buoyancy regulating integrated valve assembly, characterized in that, The high-flow-rate buoyancy regulating integrated valve assembly includes a base, a drive motor, a seawater pump, an expansion joint, a safety valve, a buoyancy assembly, and a sensing assembly, wherein: The base has a liquid flow channel inside, and the safety valve is installed on the base and is connected to the liquid flow channel; The sensing component is disposed on the base and is configured to detect the pressure in the liquid flow channel and send it to the controller to control the safety valve to open or close. The drive motor is located at the first end of the base along the first horizontal direction. The drive end of the drive motor is connected to the seawater pump. The seawater pump is connected to the buoyancy assembly through the expansion joint. The buoyancy assembly is located at the second end of the base along the first horizontal direction. The buoyancy assembly is configured to connect the external seawater environment with the ballast tank, so that the submersible can float, suspend, or sink.

2. The large-flow buoyancy regulating integrated valve assembly according to claim 1, characterized in that, The base includes a base, a first valve block, a second valve block, and a third valve block. The first valve block, the second valve block, and the third valve block are arranged sequentially and at intervals along a second horizontal direction on the base. Each of the first valve block, the second valve block, and the third valve block is provided with a first mounting hole. The second valve block is provided with a second mounting hole. The safety valve is disposed in the second mounting hole.

3. The large-flow buoyancy regulating integrated valve assembly according to claim 2, characterized in that, The sensing component includes at least three pressure sensors, which are disposed on the first mounting hole.

4. The large-flow buoyancy regulating integrated valve assembly according to claim 1, characterized in that, The buoyancy assembly includes a first electric ball valve, a second electric ball valve, a third electric ball valve, and a fourth electric ball valve. The first and second electric ball valves are spaced apart and disposed on a first side of the base along the first horizontal direction, and the third and fourth electric ball valves are spaced apart and disposed on a second side of the base along the first horizontal direction.

5. The large-flow buoyancy regulating integrated valve assembly according to claim 2, characterized in that, The safety valve includes a valve body and an adjusting knob. The valve body has an internal valve cavity containing a valve core. The adjusting knob is threaded to the valve body and has an adjusting rod. A screw plug is threaded to the valve cavity, and a first O-ring is positioned between the screw plug and the valve body. The screw plug has a clearance hole, and the adjusting rod passes through the clearance hole and is positioned within the valve cavity. The adjusting rod is connected to the valve core by a spring. The valve body has a first mounting hole at its P port containing a second O-ring. The valve body has a second mounting hole at its T port containing a third O-ring. The valve body's P port is connected to the P port of a second valve block, and the valve body's T port is connected to the T port of the second valve block.

6. The large-flow buoyancy regulating integrated valve assembly according to claim 1, characterized in that, The seawater pump and the drive motor are located on the same axis and are independent of each other.

7. The large-flow buoyancy regulating integrated valve assembly according to claim 2, characterized in that, The inlet of the seawater pump is connected to the second valve block via an expansion joint, and the outlet of the seawater pump is connected to the second valve block via a pipeline.

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