Municipal drainage axial flow pump maintenance trial run control device

A technology of urban drainage and control devices, applied in pump control, non-variable pumps, machines/engines, etc., can solve problems such as inconvenient maintenance operations, and achieve the effect of reducing water pollution

Active Publication Date: 2017-01-04
SHANGHAI MUNICIPAL SEWERAGE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adjustment of the impeller angle can only be implemented after the pump is disassembled, which is not convenient for routine maintenance operations.

Method used

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  • Municipal drainage axial flow pump maintenance trial run control device
  • Municipal drainage axial flow pump maintenance trial run control device
  • Municipal drainage axial flow pump maintenance trial run control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Hereinafter, in conjunction with the accompanying drawings, a preferred embodiment is described in detail to further illustrate the present invention.

[0029] Such as Figure 1~4 As shown, an urban drainage axial flow pump maintenance test run control device. The axial flow pump includes a vertically arranged electric motor 12, and an impeller 6 connected to the shaft of the electric motor 12 through a water-stop packing pressure plate 5. The control device includes: The pumping end of the wall pipe 11 is immersed in water, and the water outlet end passes through the wall and is located outside the wall. The impeller 6 is located at the pumping end of the wall pipe 11, and the water outlet end of the wall pipe is provided with a water outlet flap door 10 ; The temperature sensor 2, which is set on the motor 12, is used to detect the temperature of the motor and output temperature signals; the speed sensor 3, which is used to detect the rotation speed of the motor shaft an...

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Abstract

The invention discloses a municipal drainage axial flow pump maintenance trial run control device. The control device comprises a wall through pipe, a temperature sensor, a rotating speed sensor and a variable frequency control assembly; a water pumping end of the water through pipe is immersed in water; a water outlet end of the water through pipe penetrates through a wall body and is positioned out of the wall body; the temperature sensor is arranged on an electric motor, and is used for detecting the temperature of the electric motor and outputting a temperature signal; the rotating speed sensor is used for detecting the rotating speed of a rotating shaft of the electric motor, and outputting a rotating speed signal; the input end of the variable frequency control assembly is connected with the temperature sensor and the rotating speed sensor, and is used for controlling the rotating speed of the electric motor, so that water in the water through pipe flows to the water outlet end; or the electric motor is shut down according to the temperature and / or the rotating speed of the electric motor. According to the municipal drainage axial flow pump maintenance trial run control device, the rotating speed of the electric motor is controlled by utilizing a low frequency range section of a frequency converter, so that water cannot flow out of an outlet flap valve of an axial flow pump, thus completing a trial run task.

Description

Technical field [0001] The invention relates to the field of axial flow pump test runs, in particular to an urban drainage axial flow pump maintenance test run control device. Background technique [0002] Generally, the axial flow pumps installed in the pumping station have the requirements for commissioning (pumps). Through the pumps that have been out of service for a period of time, a short period of time (10~15 minutes) of operation and commissioning is carried out, the purpose is to understand the pump directly Whether the various operating parameters during operation are normal, prevent the impeller from being deposited by silt or sediment, prevent the rubber part of the rubber band from bonding and scaling with the shaft sleeve, and also make the motor coil heat and drive moisture to maintain or restore the motor insulation degree. It can be seen that the commissioning behavior is an indispensable and important link in the equipment operation management process and is es...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00
CPCF04D27/001F04D27/004F04D27/008
Inventor 袁述时余凯华顾士杰梁振华戴勇华孔利明
Owner SHANGHAI MUNICIPAL SEWERAGE CO LTD
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