Hot air circulating system for vertical high-temperature heavy metal pump
A circulatory system, heavy metal technology, applied in non-variable-capacity pumps, non-displacement pumps, pumps, etc., can solve problems such as medium residue, rotor jamming, equipment damage, etc., to ensure safety, solve medium residue, and improve stability. Effects of Sex and Reliability
Pending Publication Date: 2018-02-09
JIANGSU GUOQUAN PUMP MFG CO LTD
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Problems solved by technology
[0003] In order to solve the above-mentioned problems of the existing technical solutions, the residual medium is easy to occur in the gap between the guide bearing and the shaft when the high-temperature pump is normally shut down or shut down for maintenance. When the pump is raised, due to the temperature drop, the heavy metal will change from liquid to solid, which will cause the rotor to jam. The risk of sticking or even jamming, resulting in equipment damage and other problems
The invention provides a hot air circulation system for a vertical high-temperature heavy metal pump
Method used
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[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.
[0023] Such as figure 1 Shown is a schematic diagram of an embodiment of a hot air circulation system for a vertical high-temperature heavy metal pump of the present invention, figure 2 A cross-sectional view of a helical impeller, image 3 for figure 1 Partial enlarged view of part A in the middle, the hot air circulation system mainly includes water inlet section 1, impeller 2, guide shell 3, lock nut 4, guide bearing 1 5, main shaft 6, water pipe 7, and heat box 8 , valve three 9, overflow pipe 10, sealing cock 11, shaft sheath 12, drain elbow 13, guide bearing two 14, gland 15, mechanical seal 16, valve one 17 and gas-liquid separation device 18, spiral impeller 19 , valve two 20, one-way valve 21, air pressure storage tank 22, are characterized in that:...
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The invention provides a hot air circulating system for a vertical high-temperature heavy metal pump. The hot air circulating system for the vertical high-temperature heavy metal pump mainly comprisesa water inlet section (1), an impeller (2), a guide shell (3), a locking nut (4), a guide bearing 1 (5), a main shaft (6), a lifting pipe (7), a hot box (8), an overflow pipe (10), a shaft protectivecover (12), a drainage bent pipe (13), a guide bearing 2 (14), a gland (15), a mechanical seal (16), a valve (17) and a gas-liquid separation device (18), a spiral impeller (19), a control valve (20), a one-way valve (21) and an air pressure storage tank (22); and a hot air system is built for flushing protection of such gaps as guide bearings through pressurization by the spiral impeller (19) byusing self heat of the pump, so that the safety margin in pump operation and maintenance is improved, the medium remaining phenomenon easily generated in gaps between the guide bearings and the shaftin normal stop of a high-temperature pump or stop maintenance can be preferably solved, the clamping or even blockage of a rotor is prevented, and the overall reliability is greatly improved.
Description
technical field [0001] The invention mainly relates to the field of fluid machinery, in particular to a hot air circulation system for a vertical high-temperature heavy metal pump. Background technique [0002] At present, the demand for industrial pumps is increasing, and industrial pump devices are developing in the direction of large capacity, high efficiency, reliability, low noise and automation. import. The research and development of high-temperature heavy metal pumps is the development direction of the domestic pump industry and the fourth-generation nuclear power pumps in recent years. Some parts are soaked in high-temperature medium and run in a closed heating storage tank. During normal operation, the guide bearings can be well lubricated and have good stability. At this time, due to the small radial gap between the guide bearing and the shaft and the influence of the liquid film tension of the liquid medium, there will be residual medium in the gap between the ...
Claims
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IPC IPC(8): F04D17/06F04D29/28F04D29/063F04D29/58F04D29/70
CPCF04D17/06F04D29/063F04D29/281F04D29/584F04D29/703
Inventor 朱荣生钟伟源杨爱玲
Owner JIANGSU GUOQUAN PUMP MFG CO LTD