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Sealed water recovery system of feed pump

A technology of recycling system and sealing water, applied in the direction of pumps, pump components, non-variable-capacity pumps, etc., can solve the problems of poor adaptability of electric pumps, need for cooling water, increase power consumption of condensate pumps, etc., to achieve good adaptability and operation. Easy maintenance and small footprint

Active Publication Date: 2009-11-04
SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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AI Technical Summary

Problems solved by technology

[0012] Compared with the multi-stage U-shaped water seal system, the advantage of the single-stage water seal system is that the system configuration is relatively simple because a single-stage water seal can be shared; the disadvantage is that it also needs to start water injection; and the electric pump is more adaptable Poor, the layout is very low; cooling water is also needed, which increases the power consumption of the condensate pump

Method used

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  • Sealed water recovery system of feed pump
  • Sealed water recovery system of feed pump
  • Sealed water recovery system of feed pump

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Embodiment Construction

[0023] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0024] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0025] like image 3 As shown, a feed water pump seal water recovery system includes: recovery water tank 1, seal water inlet pipe 2 and valve 3, seal water outlet pipe 4 and return water pipe regulating valve group 5, exhaust pipe 6, overflow pipe 7. Discharge pipeline 8 and normally closed valve 9.

[0026] One end of the sealed water inlet pipe 2 is connected to the water outlet of the shaft end of the water pump, the other end is connect...

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Abstract

The invention discloses a sealed water recovery system of a feed pump, which comprises a return water tank, a sealed water inlet pipe, a sealed water outlet pipe, regulating valves of backwater pipes, an exhaust pipe, an overflow pipe and a discharge pipe. The invention has the advantages of simple structure of the return water tank, simply system configuration, small occupying space and little investment. The sealed water recovery system of the feed pump needs no cooling water, no priming, has good water seal effect, and convenient operating maintenance. The electric pump has good adaptability.

Description

technical field [0001] The invention relates to a recovery system of sealing water, in particular to a recovery system of sealing water of a feed pump. Background technique [0002] The shaft end seal of the feed water pump is realized by injecting condensed water with a pressure higher than that in the sealed chamber to prevent the medium in the pump body from leaking out through the shaft seal. In order to reduce the loss of working medium, the condensed water is recovered. In order to reduce the impact on the vacuum of the main engine and the flexibility of unit operation, the return water of the sealing water of the feed water pump is not directly connected to the condenser, but is discharged to the condenser for recovery after passing through the sealing water recovery system. [0003] At present, the seal water recovery system of the feed pump mainly adopts the following two forms: [0004] (1) Multi-stage U-shaped water seal system [0005] like figure 1 As shown, ...

Claims

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Application Information

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IPC IPC(8): F04D29/00
Inventor 马爱萍辛晓光唐茂平李陆伟王旭东贺清辉
Owner SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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