Double-layer contact type heat-conducting high-power power supply pressure-bearing shell for large water depth

Abstract

The invention relates to a double-layer contact type heat-conducting high-power power supply pressure-bearing shell for a large water depth. The shell comprises a rear sealing cover plate, an outer metal shell, an inner composite shell, a front sealing cover plate and a rubber skin flow guide cover, the outer metal shell comprises a round shell, a ring rib and a guide rail, and the inner composite shell is formed by curing a metal outer octahedral cylinder section, a non-metal glass fiber reinforced plastic section and a stainless steel sealing surface section and comprises a stainless steel sealing section, an insulating glass fiber reinforced plastic section, a guide supporting roller, an aluminum alloy mounting surface and an aluminum alloy inner shell; the outer metal shell and the inner composite shell are sealed through the front sealing cover plate and the rear sealing cover plate, and a rubber skin flow guide cover is arranged on the outer side of the sealing cover plate. According to the high-power power supply pressure-bearing shell, the heat conduction state of a heating component of an underwater power supply module can be obviously improved, the machining difficulty of the pressure-bearing shell is reduced, the precision and roughness of a machining surface are improved, and electric fitting and overhauling are facilitated.

Description

technical field [0001] The invention belongs to the technical field of marine exploration engineering, and in particular relates to a double-layer contact heat-conducting high-power power source pressure-bearing housing for large water depths. Background technique [0002] In the field of marine towed geological exploration and ground-penetrating electromagnetic communication, it is often necessary to use high-power power supplies to transmit electric fields in large water depths to obtain seabed geological information or complete submarine electromagnetic communication signal transmission tasks. At present, a common heat dissipation method for large water and deep underwater pressure-bearing shells is to install all components of the power module on a long strip-shaped fixed bracket, and then install them into a watertight pressure-bearing shell as a whole after the electrical assembly is completed. In the middle, seal from both ends at last, the shell of this structure is ...

AI Technical Summary

Problems solved by technology

In addition, in order to prevent the accidental breakdown of high-voltage components that may cause the risk of housing leakage, an insulating silicone pad is usually placed between the heating element and the substrate. The thermal conductivity of this type of silicone pad is extremely low, and generally only aluminum alloy 2 %; since there are dozens of groups of modular units for an underwater power supply, the number of installation planes corresponding to the pressure-bearing shell is also as many as 10, and its size is large (length can reach 1.5 meters), and the machine tool work It is very difficult to process a high-precision plane with the end or the tool inserted into the inner cavity of the shell, resulting in a large error in the flatness of the actual mounting surface, and it cannot be bonded to the aluminum alloy substrate in a large area. Even if the heat-conducting silicone grease is applied, the effect is not good. And the processing cost increases several times

In summary, the actual heat conduction effect is not good, and this kind of inner cavity electrical device structure also brings great difficulties to subsequent inspection and maintenance.

[0004] In addition, if active water circulation cooling is used in the power cabin, it is often necessary to pass cooling seawater into the cabin. Because the pressure at the working depth of this kind of power supply is very high (several MPa to dozens of MPa), the general copper pipes and circulating water pumps are The conditions cannot be met, and the internal pipeline layout structure is also very complicated. Once there is a water leakage problem in the connecting pipeline, the entire power supply compartment will be completely scrapped, and the application cost is high and the risk is relatively high

[0005] Therefore, in order to solve the problems of large heat generation and high heat dissipation efficiency when high-power underwater power supply is working, it is necessary to design a new passive type with good heat conduction effect, easy to process and easy to achieve high precision, and easier to install and install. Repaired underwater high-power power supply pressure-bearing shell structure

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