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Large diving electric pump

A submersible electric pump, large-scale technology, applied in the direction of pumps, pump devices, pump components, etc., can solve problems such as difficult maintenance work, achieve the effects of environmental stability, improve safety and reliability, and reliable service life

Inactive Publication Date: 2005-11-09
HEFEI HENGDAJIANGHAI PUMP IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the particularity of the operating environment of submersible pumps, the reliability requirements for their operation are very important. There is no good solution in the prior art to solve the sealing problem, especially for large-scale submersible pumps. , its maintenance work is extremely difficult

Method used

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  • Large diving electric pump
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Embodiment Construction

[0011] As shown in FIG. 1 , at least two mechanical seals are provided in the present invention. The first mechanical seal 90 is located at the shaft extension end of the water pump shaft 31 , and the second mechanical seal 110 is located at the shaft extension end of the motor shaft 11 .

[0012] A third mechanical seal 100 is provided between the first mechanical seal 90 and the second mechanical seal 110 , and the third mechanical seal 100 is located in the cooling lubricating oil cavity of the water pump shaft 31 .

[0013] The first mechanical seal 9 is used to prevent the working water from entering the oil cavity of the cooling lubricating oil; the second mechanical seal 100 prevents the cooling lubricating oil from heating up and expanding; the third mechanical seal 110 prevents the cooling lubricating oil from entering the motor cavity. The use of three mechanical seals can strengthen the sealing effect of the submersible electric pump, such as improving the life of th...

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Abstract

The invention relates to a large-scale submersible pump that at least includes two mechanical seals: one is at the shaft extension end of pump rotating shaft, and the other is at the shaft extension end of the electromotor rotating shaft. The sealing effect would be enhanced and the environment for the components is relative stability. The working reliability of the components is ensured. The safety of the submersible pump is improved.

Description

Technical field: [0001] The submersible electric pump involved in the present invention is more specifically a large-scale submersible electric pump with planetary gear deceleration with a power of 250kW, a diameter of 1m and above, and a pump speed below 500r / min. Background technique: [0002] In the prior art, the motor and the water pump in the large submersible electric pump are arranged coaxially. Based on the design principle that the linear velocity around the impeller of the water pump must maintain a specific constant, when the water pump develops to a larger size, the larger the diameter of the impeller of the water pump, the lower the rotational speed. For the motor, the lower the speed of the motor with the same power, the more poles it has, so the diameter of the motor is larger, the volume is larger, and the efficiency and power factor are lower. Due to the particularity of the operating environment of submersible pumps, the reliability requirements for their...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/10
Inventor 邓悌康周巧霞
Owner HEFEI HENGDAJIANGHAI PUMP IND CO LTD
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