Thermal shielding device of high-temperature medium pump
A technology of shielding device and high-temperature medium, which is applied to components of pumping devices for elastic fluids, pump elements, variable-capacity pump components, etc., can solve the problems of inability to effectively shield high-temperature medium conduction, pump failure, etc., to ensure The effect of long-term safe operation
Active Publication Date: 2013-02-20
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology
[0007] The technical problem to be solved by the present invention is to provide a heat shielding device for a high-temperature medium pump, so as to solve the problem in the prior art that the heat of the high-temperature medium cannot be effectively shielded from being transmitted to the pump unit, bearing support and sealing device, thereby causing the pump to fail
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[0046] The preferred embodiments of the present invention are given and described in detail below in conjunction with the accompanying drawings, so that the functions and characteristics of the heat shielding device for high-temperature medium pumps of the present invention can be better understood.
[0047] Such as figure 1As shown, the high-temperature medium pump heat shielding device according to the present invention includes a pump shaft 1, a pump tank 2, an upper flange 3 and a shielding plug 4, wherein the pump shaft 1 extends into the pump tank along a central axis (not shown) 2, the upper flange 3 is arranged around the pump shaft 1 on the outside of the pump tank, and the shielding plug 4 extends around the pump shaft 1 near the opening of the pump tank, and the upper wall surface 48 of the shielding plug 4 is in contact with the lower wall surface 32 of the upper flange 3 Seal fit, the lower wall surface 49 of the shielding plug 4 extends into the pump tank 2 and i...
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The invention provides a thermal shielding device of a high-temperature medium pump. The thermal shielding device comprises a pump shaft, a pump tank, an upper flange and a shielding plug, wherein the shielding plug is provided with a shielding plug flange which extends outwards from the radial direction of a main body of the shielding plug, the upper wall surface of the shielding plug is in seal fit with the lower wall surface of the upper flange, and the lower wall surface of the shielding plug is directly exposed in a high-temperature molten salt in the pump tank; the pump tank is provided with a pump tank flange which extends outwards from the radial direction, and the upper wall surface of the pump tank flange is in seal fit with the lower wall surface of the shielding plug flange; a circumferential cooling gas passage is arranged in the pump tank flange; and a series of annular gas passages which are spaced apart outwards in the radial direction are arranged on the main body of the shielding plug, and the whole cooling gas passage ensures that a connection flange is kept at a lower temperature. The thermal shielding device of the high-temperature medium pump can prevent the heat of a high-temperature medium in the pump tank from being conducted to a rotor and a supporting system above the pump tank so as to ensure that each component works safely and reliably at an appropriate temperature.
Description
technical field [0001] The invention relates to a high-temperature medium pump, in particular to a heat shielding device for a high-temperature molten salt pump of a molten salt reactor. It is suitable for temperature control of bearings and sealing flanges using high-temperature medium pumps, and can be widely used in high-temperature medium pumps in chemical high-temperature molten salt, non-ferrous metal smelting and other fields. Background technique [0002] The high-temperature medium pump is a pump body used for conveying high-temperature medium, known to be widely used in metallurgy, petrochemical and other industries. It can be seen from the existing technology that the mechanical properties of the materials used in the current high-temperature medium pumps are generally unstable at high temperatures. At the same time, the key structural components (such as various sealing structures, support bearings, lubrication, etc.) It can work normally in a lower temperature ...
Claims
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Inventor 黎忠傅远黄建平张健宇林良程毛文玉王纳秀王晓李波陆世瑞
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI