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Submersible motor-driven pump with an anti-frost device

An antifreeze device, electric pump technology, applied to pump devices, components of pumping devices for elastic fluids, non-variable pumps, etc., can solve problems such as shaft freezing

Inactive Publication Date: 2008-01-30
OASE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the ice continues to freeze downwards in the housing, the water also expands below the suction connection arranged on the side of the shaft and concentrically with the shaft, creating a risk of self-freeze for the shaft, especially for porcelain shafts

Method used

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  • Submersible motor-driven pump with an anti-frost device
  • Submersible motor-driven pump with an anti-frost device
  • Submersible motor-driven pump with an anti-frost device

Examples

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Embodiment Construction

[0019] In FIG. 1 , an electric submersible pump 1 is schematically shown in longitudinal section in an operating or operating position. A housing 3 is connected at one end (on the left in FIG. 1 ) to a suction connection 5 . The suction connection 5 is part of a suction housing 7 on which a pump connection 9 and a discharge connection 11 are also formed. Arranged in the suction housing 7 is an impeller 13 operatively connected to the suction connection 5 and the pump connection 9 , which is fastened to a shaft, in particular to a porcelain shaft 15 . The ceramic shaft 15 has an axis X which, in the operating position shown, extends in a substantially horizontal direction in a slot 17 which is arranged in the housing 3 . The ceramic shaft 15 is supported in a ceramic bearing 19 at the connection point between the suction housing 7 and the cannula 17 , which in turn is supported in an elastic sleeve 20 . Between the ceramic bearing 19 and a rotor 21 located on the ceramic shaf...

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PUM

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Abstract

A submersible motor-driven pump comprising a housing, an intake pipe disposed on the housing, an impeller disposed inside the intake pipe in order to produce an intake flow and in order to transport a fluid to a discharge connection, said impeller being mounted on a shaft, also comprising a can into which the shaft extends, characterized in that an anti-frost device is arranged inside the housing for the shaft.

Description

technical field [0001] The invention relates to an immersion electric pump. Background technique [0002] Such submersible electric pumps are known from the general prior art. If they are installed in a pond or in a fluid medium in a non-freezing state, they must be removed from their place of storage during the winter and stored frost-proof. In an electric submersible pump, usually an impeller is connected by a porcelain shaft to a motor that drives the impeller during pump operation. [0003] It is known that said porcelain shafts are sensitive to the pressure acting on them and break easily. However, in the known electric submersible pumps the use of ceramic shafts is preferred due to numerous other advantageous properties. [0004] In winter, the unprotected fluid medium freezes through from one surface downwards. When, for example, a submersible electric pump overwinters in a park pool, the pump may freeze during a freezing cycle. The pool water is located in such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D13/08F04D15/00F04D29/42F04D29/58
CPCF04D29/586F04D13/08F04D15/0077F04D13/086F04D29/426
Inventor D·霍夫迈尔
Owner OASE GMBH