A sealing component of a liquid metal pool driving device
A liquid metal and sealing component technology, which is applied to the components of pumping devices for elastic fluids, liquid fuel engines, pump components, etc., can solve the problems of easy leakage, high design, manufacturing and operation and maintenance costs of sealing devices, achieve the effect of avoiding cavitation
Active Publication Date: 2017-02-22
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology
Mechanical pumps can provide higher flow and pressure head, but mechanical pumps are prone to leakage due to the use of dynamic seals. If they are used in occasions that require high leakage, a set of sealing devices must be specially designed. The design of the sealing device, Manufacturing and operation and maintenance costs are higher
Method used
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Embodiment Construction
[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0018] Such as Figure 1~2 As shown, the liquid metal injection system 1 is connected to the pump box seal assembly 3 through the main pipeline, and the liquid metal flows into the pump box seal assembly 3 through the injection system 1, and the pump body 15 of the vertical mechanical pump 5 in the pump box seal assembly 3 Partially submerged in the liquid metal in the pump box 4, the liquid metal flows into the pipeline or container to be transported through the pump outlet 16 under the drive of the vertical mechanical pump 5. The lower end of the pump box is connected to the storage tank 8 through an emptying pipe. An emptying valve 7 is provided between the pump box sealing assembly 3 and the storage tank. The emptying valve 7 is generally an electric stop valve. The outlet of the emptying pipe at the lower end of the pump box sealing assemb...
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The invention discloses a liquid metal pool type driving device sealing assembly and in particular relates to a liquid metal pool type driving device pump box sealing assembly used for conveying liquid metal with high-temperature and high-sealing requirements. An ordinary vertical mechanical pump is fixed to a pump box through a flange, wherein all the parts at the upper end of the pump flange are sealed in a sealing cover; a pump body impeller and a support part are immersed in the conveyed liquid metal; a free liquid level is reserved in the pump box; the upper part of the free liquid level is filled with micro-positive pressure insert protection gas, so that the sealed liquid heavy metal can be converted into sealed protection gas; then the dynamic sealed protection gas in a shaft seal is converted into static seal between pump connection flanges; a power supply and a signal leading-out wire connecting terminal are arranged on an end cover of the sealing cover; the connecting terminal adopts a sparking plug; a circulating cooling water jacket is arranged on the sealing cover in the peripheral direction and is used for cooling heat generated by a motor and a bearing in the sealing cover, thereby ensuring that the vertical mechanical pump is safe, long-term and stable in running.
Description
technical field [0001] The invention relates to a novel sealing assembly of a liquid metal pool driving device, in particular to a sealing assembly of a pump box of a liquid metal pool driving device which transports high temperature and has high sealing requirements. Background technique [0002] At present, the power components used for liquid metal drive mainly include mechanical pumps, electromagnetic pumps and gas lift pumps. The electromagnetic pump has no dynamic seal and has high sealing performance. Gas lift pumps use gas injection to avoid wear and corrosion of mechanical wetted parts. However, the efficiency of electromagnetic pumps and air lift pumps is low, and the flow and pressure head they can provide are relatively limited. Therefore, they are generally used in occasions that have high requirements for leakage, wear and corrosion, and low requirements for flow and pressure head. The cost is relatively high. Mechanical pumps can provide higher flow and pre...
Claims
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IPC IPC(8): F04D29/08
CPCF04D29/086F04D29/5806F04D29/586
Inventor 李小龙陈刘利黄群英朱志强马旭丹
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI