Online switching method of high-pressure long-distance slurry pipeline transmission multi-stage pump station

A pipeline transportation, long-distance technology, applied in pipeline systems, pump control, non-variable-capacity pumps, etc., to achieve the effect of reducing the number of shutdowns and operating costs

Active Publication Date: 2009-11-18
YUNNAN DAHONGSHAN PIPELINE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The online switching method of the multi-stage pumping station of the high-pressure long-distance slurry pipeline provided by the present invention is an improvement of the operation technology in the operation technology of the high-pressure long-distance slurry transportation system in order to meet the requirement that the long-distance slurry pipeline cannot be shut down frequently during the transportation process

Method used

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  • Online switching method of high-pressure long-distance slurry pipeline transmission multi-stage pump station

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Embodiment Construction

[0034] The present invention will be specifically described below in conjunction with the accompanying drawings.

[0035] Such as figure 1 As shown, the output of the three main pumps 11 of the No. 1 pumping station PS1 is connected to the pressure transmitter 22 of the No. 2 pumping station, and its output is divided into two paths through the first electric ball valve 23, and one path is directly connected to the The main pump 22 of the No. 2 pumping station is connected to the stirring tank 8 through the third electric ball valve 25, and the output of the stirring tank 8 is connected to the main pump 22 through the first electric gate valve 27, the feeding pump 28, and the second electric gate valve 29. . The composition structure of No. 3 pumping station is the same as that of No. 2 pumping station.

[0036] (1) Confirmation and precautions before operation:

[0037] 1. Confirm that the multiple delivery valves set in the pipeline can switch normally, the switch is flex...

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Abstract

The invention discloses an online switching method for switching independent operation of a high-pressure long-distance slurry pipeline transmission multi-stage pump station into continuous beating operation and switching the continuous beating operation into independent operation, wherein the method ensures the inlet pressure of all secondary pump stations to be in designed range by changing the operation sequence of inlet valves of all the pump stations and reducing the pump speed of main pumps of all stages of pump stations, thus reducing shutdown times when completely changing the conveying mode, reducing operation cost, and creating conditions for restarting after an emergency shutdown and switching independent operations of all stations into complete continuous beating operations without stop.

Description

technical field [0001] The invention belongs to the field of high-pressure long-distance slurry pipeline transportation, and in particular relates to the online switching technology of multi-stage pump stations. Background technique [0002] The high-pressure long-distance slurry conveying system is composed of main pump, feeding pump, stirring tank, thickening tank, underflow pump, high-pressure pipeline and high-pressure valve, etc. [0003] During the conveying process, it is sometimes necessary to switch the conveying method according to the requirements. Now the switch is performed after the whole line is stopped (that is, the factory is shut down), which increases the production cost and interrupts the continuity of production. In order to minimize the cost and ensure the continuity of slurry delivery, it is necessary to switch on-line without stopping. Contents of the invention [0004] The online switching method of the multi-stage pumping station of the high-pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/14F17D3/01
CPCF04D15/0066F04D27/0261
Inventor 安建普光跃黄朝兵瞿承中马波刘紫能潘春雷刘弘伟王健拔海波李霞李申鹏赵增佳张晓楠
Owner YUNNAN DAHONGSHAN PIPELINE
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