An underwater underpressure compensated electronic cabin system

Abstract

This invention relates to the field of underwater robotics, and particularly to an underwater underpressure compensation electronic cabin system. It includes an electronic cabin, an overflow valve, a check valve, and a pressure compensation device. The electronic cabin and the pressure compensation device are connected via a first oil circuit and a second oil circuit. The overflow valve is located on the first oil circuit, and the check valve is located on the second oil circuit. The pressure difference between the electronic cabin and the pressure compensation device causes the overflow valve and the check valve to alternately open or close, achieving automatic pressure compensation in the electronic cabin. This invention improves the stability of components within the electronic cabin at great depths, requires no additional operation, can adaptively adjust the internal pressure of the cabin, is simple to implement, has a large volume, and can accommodate large-volume hardware systems.

Description

Technical Field

[0001] This invention relates to the field of underwater robot technology, and in particular to an underwater underpressure compensation electronic cabin system. Background Technology

[0002] For sealing purposes, underwater robots require numerous sealed electronic compartments to encapsulate control systems and electronic components. These compartments are divided into two types: pressure-resistant dry compartments and pressure-compensated wet compartments. Pressure-resistant dry compartments only withstand external pressure. To meet strength requirements, their walls and end caps are thicker, and their volume cannot be too large, necessitating smaller internal electronic components. Pressure-compensated wet compartments are filled with oil and connected to an external pressure compensation device, balancing the internal and external pressures. This reduces the strength requirements, allowing for thinner walls and a larger volume for both the compartment and internal electronic components. However, because the internal electronic components are subjected to internal pressure, they are prone to instability and unreliability under high pressure. Therefore, there is an urgent need for an underwater underpressure-compensated electronic compartment system that can accommodate larger electronic components while maintaining their stability. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide an underwater underpressure compensation electronic chamber system. This structure improves the stability of components within the pressure compensation wet chamber at great depths, requires no additional operation, can adaptively adjust the internal pressure of the chamber, is simple to implement, has a large volume, and can accommodate large-volume hardware systems.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] An underwater underpressure compensation electronic cabin system includes an electronic cabin, an overflow valve, a check valve, and a pressure compensation device. The electronic cabin and the pressure compensation device are connected through a first oil circuit and a second oil circuit. The overflow valve is located on the first oil circuit, and the check valve is located on the second oil circuit. The pressure difference between the electronic cabin and the pressure compensation device causes the overflow valve and the check valve to open or close alternately, thereby achieving automatic pressure compensation of the electronic cabin.

[0006] When the oil pressure in the pressure compensation device is greater than the overflow pressure of the overflow valve, the overflow valve opens, allowing the compensation oil in the pressure compensation device to enter the electronic compartment; when the oil pressure in the electronic compartment is greater than the oil pressure in the pressure compensation device, the check valve opens, allowing the oil in the electronic compartment to enter the pressure compensation device.

[0007] The overflow pressure of the overflow valve is 30 MPa.

[0008] The first oil circuit and the second oil circuit are respectively connected to the upper and lower ends of the electronic compartment.

[0009] The electronic cabin includes a cover, a cabin body, connectors, a multi-layer circuit board, and a central column. The central column is fixed at the center of the cabin body, the multi-layer circuit board is mounted on the central column, and the side walls of the cabin body are provided with multiple connectors that connect to the multi-layer circuit board. The cover is sealed and connected to the top of the cabin body.

[0010] The cabin is a cylindrical structure, and the upper and lower ends of the side walls are respectively provided with an inlet oil pipe joint and an outlet oil pipe joint, wherein the inlet oil pipe joint is connected to the first oil circuit and the outlet oil pipe joint is connected to the second oil circuit.

[0011] The hatch cover is a circular structure and is fixedly connected to the hatch body by bolts. The hatch cover and the hatch body are sealed by O-rings.

[0012] The advantages and beneficial effects of this invention are:

[0013] 1. This invention improves the stability of components in a pressure-compensated wet chamber at great depths: The system proposed in this invention can keep the internal pressure low when the external pressure is high, thereby improving the stability of components in the chamber under pressure.

[0014] 2. The invention is simple to implement: The cabin system proposed in this invention can passively adapt to external pressure and adjust the internal pressure of the cabin without additional operation, making it easy to implement.

[0015] 3. The present invention has a large volume and can accommodate large-volume hardware systems: The cabin system of the present invention has a small wall thickness and a large internal volume, which can accommodate large-volume hardware systems. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an underwater underpressure compensation electronic cabin system according to the present invention;

[0017] Figure 2 This is an isometric view of the electronic compartment in this invention;

[0018] Figure 3 This is a front view of the electronic compartment in this invention;

[0019] Figure 4 This is a longitudinal sectional view of the electronic compartment in this invention;

[0020] Figure 5 This is a diagram showing the internal and external pressure response of an underwater underpressure compensation electronic cabin system according to the present invention.

[0021] In the diagram: 1-Electronic compartment, 101-Hatch cover, 102-Body, 103-Connector, 104-Multi-layer circuit board, 105-Center column, 106-O-ring, 107-Inlet oil pipe connector, 108-Outlet oil pipe connector, 2-Overflow valve, 3-Check valve, 4-Pressure compensation device, 5-First oil circuit, 6-Second oil circuit. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1 As shown, the present invention provides an underwater underpressure compensation electronic cabin system, including an electronic cabin 1, an overflow valve 2, a check valve 3, and a pressure compensation device 4. The electronic cabin 1 and the pressure compensation device 4 are connected through a first oil circuit 5 and a second oil circuit 6. The overflow valve 2 is installed on the first oil circuit 5, and the check valve 3 is installed on the second oil circuit 6. Through the pressure difference between the electronic cabin 1 and the pressure compensation device 4, the overflow valve 2 and the check valve 3 are alternately opened or closed to achieve automatic pressure compensation of the electronic cabin 1.

[0024] This invention provides an underwater underpressure compensation electronic cabin system, which improves the stability of components in the pressure compensation wet cabin at great depths. When the external pressure is large, the internal pressure can be kept small, thereby improving the stability of the components in the electronic cabin 1 under pressure.

[0025] This invention provides an underwater underpressure compensation electronic compartment system with a wide range of applications and the ability to withstand water pressure up to 6000 meters. When the oil pressure in the pressure compensation device 4 is greater than the overflow pressure of the overflow valve 2, the overflow valve 2 opens, allowing the compensation oil in the pressure compensation device 4 to enter the electronic compartment 1; when the oil pressure in the electronic compartment 1 is greater than the oil pressure in the pressure compensation device 4, the one-way valve 3 opens, allowing the oil in the electronic compartment 1 to enter the pressure compensation device 4.

[0026] In this embodiment, both the overflow valve 2 and the check valve 3 are commercially available products, and the overflow pressure of the overflow valve 2 is 30 MPa. Preferably, the first oil circuit 5 and the second oil circuit 6 are connected to the upper and lower ends of the electronic compartment 1, respectively.

[0027] like Figure 2-4 As shown, in an embodiment of the present invention, the electronic cabin 1 includes a cover 101, a cabin body 102, connectors 103, a multi-layer circuit board 104, and a central column 105. The central column 105 is fixed at the center of the cabin body 102. The multi-layer circuit board 104 is mounted on the central column 105. The side wall of the cabin body 102 is provided with a plurality of connectors 103 connected to the multi-layer circuit board 104. The cover 101 is sealed to the top of the cabin body 102.

[0028] Preferably, the hull 102 is a thin-walled cylindrical structure, and the upper and lower ends of the sidewalls are respectively provided with an inlet oil pipe joint 107 and an outlet oil pipe joint 108, wherein the inlet oil pipe joint 107 is connected to the first oil passage 5, and the outlet oil pipe joint 108 is connected to the second oil passage 6. The hatch cover 101 is a circular structure and is fixedly connected to the hull 102 by bolts, and the hatch cover 101 and the hull 102 are sealed by an O-ring 106.

[0029] Specifically, the electronic compartment 1 is filled with oil. Under an external pressure of 60 MPa and an overflow pressure of 30 MPa from the overflow valve 2, the strength of the compartment 102 can be designed according to a 30 MPa pressure. The electronic compartment can withstand a 30 MPa internal and external pressure difference, reducing the requirements for the compartment wall thickness under high pressure. The internal volume of the electronic compartment 102 is relatively large, allowing for the placement of multiple layers of large-sized hardware boards.

[0030] In an embodiment of the present invention, the pressure compensation device 4 adopts Chinese invention patent entitled "A Pressure Compensation Device for Underwater Environment", with application number 201611144296.X.

[0031] like Figure 5 As shown in the embodiment of the present invention, the internal pressure of the electronic compartment 1 passively changes with the external pressure. When the external pressure rises from 0 to 30 MPa, the overflow valve 2 closes, and the internal pressure of the electronic compartment 1 is 0. When the external pressure is greater than 30 MPa but less than 60 MPa, the pressure difference of the overflow valve 2 is greater than 30 MPa, the overflow valve 2 opens, and the oil from the pressure compensation device 4 flows into the electronic compartment 1 until the pressure difference between the internal and external pressures of the electronic compartment 1 reaches 30 MPa, at which point the overflow valve 2 closes. When the external pressure decreases from 60 MPa to 30 MPa, the pressure difference between the inside and outside of the electronic compartment 1 gradually decreases, and the overflow valve 2 closes. When the external pressure drops from 30 MPa to 0, the internal pressure of the electronic compartment 1 is higher than the external pressure, and the oil in the electronic compartment 1 flows into the pressure compensation device 4 through the one-way valve 3.

[0032] In this embodiment of the invention, the overflow pressure of the overflow valve 2 is set to 30 MPa. When subjected to bidirectional pressure, the back pressure increases to the set value, and the overflow pressure increases accordingly. The overall system can withstand a maximum of 60 MPa. When the external pressure is greater than 30 MPa, the oil in the pressure compensation device 4 flows into the electronic compartment 1 through the overflow valve 2 until the pressure difference across the overflow valve reaches 30 MPa, at which point the overflow valve closes. When the external pressure of the system is less than 30 MPa, the oil in the electronic compartment 1 flows back to the pressure compensation device 4 through the one-way valve 3. The electronic compartment 1 can withstand 6000 meters of water pressure. Under an external pressure of 60 MPa, the internal pressure of the under-pressure electronic compartment 1 is 30 MPa, reducing the pressure stress on the internal electronic components and thus improving system stability. This system has a wide range of applications, can withstand 6000 meters of water pressure, and is suitable for most water bodies worldwide, achieving a reduction in the pressure stress on the electronic compartment components under high external pressure.

[0033] The above description is merely an embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, extensions, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. An underwater underpressure compensation electronic cabin system, characterized in that, It includes an electronic compartment (1), an overflow valve (2), a check valve (3), and a pressure compensation device (4). The electronic compartment (1) and the pressure compensation device (4) are connected through a first oil circuit (5) and a second oil circuit (6). The overflow valve (2) is installed on the first oil circuit (5), and the check valve (3) is installed on the second oil circuit (6). Through the pressure difference between the electronic compartment (1) and the pressure compensation device (4), the overflow valve (2) and the check valve (3) are alternately opened or closed to realize automatic pressure compensation of the electronic compartment (1). When the oil pressure in the pressure compensation device (4) is greater than the overflow pressure of the overflow valve (2), the overflow valve (2) opens, allowing the compensation oil in the pressure compensation device (4) to enter the electronic compartment (1); when the oil pressure in the electronic compartment (1) is greater than the oil pressure in the pressure compensation device (4), the one-way valve (3) opens, allowing the oil in the electronic compartment (1) to enter the pressure compensation device (4); the overflow pressure of the overflow valve (2) is 30 MPa; The first oil circuit (5) and the second oil circuit (6) are respectively connected to the upper and lower ends of the electronic compartment (1).

2. The underwater underpressure compensation electronic cabin system according to claim 1, characterized in that, The electronic cabin (1) includes a cover (101), a cabin body (102), connectors (103), a multi-layer circuit board (104), and a central column (105). The central column (105) is fixed at the center of the cabin body (102). The multi-layer circuit board (104) is mounted on the central column (105). The side wall of the cabin body (102) is provided with multiple connectors (103) that are connected to the multi-layer circuit board (104). The cover (101) is sealed to the top of the cabin body (102).

3. The underwater underpressure compensation electronic cabin system according to claim 2, characterized in that, The cabin (102) is a cylindrical structure, and the upper and lower ends of the side wall are respectively provided with an inlet oil pipe joint (107) and an outlet oil pipe joint (108), wherein the inlet oil pipe joint (107) is connected to the first oil passage (5), and the outlet oil pipe joint (108) is connected to the second oil passage (6).

4. The underwater underpressure compensation electronic cabin system according to claim 3, characterized in that, The hatch cover (101) is a circular structure and is fixedly connected to the cabin body (102) by bolts. The hatch cover (101) and the cabin body (102) are sealed by an O-ring (106).

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