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Vertical pump pool multi-stage immersed pump

A submersible pump and vertical pump technology, applied in the field of low-temperature vertical pump pool multi-stage submersible pumps, can solve the problems of high price, high external dependence, difficult design, etc., so as to improve safety and reduce liquid loss, the effect of guaranteeing the service life

Inactive Publication Date: 2014-05-28
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficult design, high dependence on foreign equipment, expensive foreign equipment

Method used

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  • Vertical pump pool multi-stage immersed pump
  • Vertical pump pool multi-stage immersed pump
  • Vertical pump pool multi-stage immersed pump

Examples

Experimental program
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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0028] Such as figure 1 As shown, the vertical pump pool multistage submersible pump provided by the present invention includes a pump pool 1 and a pump group arranged in the pump pool 1; Cooling effect, reducing liquid loss caused by medium vaporization. At the same time, due to the non-moving seal, it can effectively prevent the leakage of the medium, and the seal is safe and reliable, which improves the safety of the pump set. The side wall of the pump pool 1 is connected with a medium inlet pipe 17, and its top is connected with a medium outlet pipe 18; the pump unit is composed of a submersible motor 10 and a pump axially connected, and the submersible motor 10 and the pump are connected by a pump shaft 11 forms a coaxial connection for the shaft; the housing of the submersible motor 10 is pr...

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PUM

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Abstract

The invention discloses a vertical pump pool multi-stage immersed pump which comprises a pump pool and a pump set arranged in the pump pool. A vacuum heat preservation interlayer is arranged on the side wall of the pump pool. The side wall of the pump pool is connected with a medium inlet pipe, and the top of the pump pool is connected with a medium outlet pipe. The pump set is formed by axially connecting an immersed motor and a pump body, and the immersed motor and the pump body are coaxially connected. A reflowing hole is formed in a shell body of the immersed motor. The pump body comprises a suction segment and a middle segment. An outlet of the pump set is communicated with the medium outlet pipe through a liquid outlet pipe. The vertical pump pool multi-stage immersed pump has the advantages of being safe in structure, stable in performance and efficient, saving energy, being good in sealing performance and the like, and can meet the work requirement of safety production in a low-temperature work environment.

Description

technical field [0001] The invention relates to a low-temperature pump, in particular to a low-temperature vertical pump pool multi-stage submersible pump used for LNG transportation in a medium-sized LNG receiving station and an LNG liquefaction plant. Background technique [0002] At present, medium-sized LNG receiving stations and LNG liquefaction plants need to use LNG pumps for LNG medium transportation, loading and unloading, etc., because LNG medium has the characteristics of low temperature, flammability, explosion and gasification, which requires the transportation of LNG High-quality pump equipment must have the characteristics of reliable sealing, small loss of operating liquid, and safe and reliable structure. The design is difficult, the external dependence is high, and the foreign equipment is expensive. [0003] The localization of submersible pump equipment is conducive to the cost control of LNG production and receiving links, the application expansion of v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D13/08F04D7/00F04D29/58F04D29/08F04D29/00
Inventor 唐令力陈杰张雷单彤文程世福陈海平胡凯聪邰晓亮万学丽花亦怀冯颉
Owner CHINA NAT OFFSHORE OIL CORP
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