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Pump for waste water application and/or water supply

A waste water, pump housing technology, applied in the direction of pumps, pump components, pump controls, etc., can solve problems such as water supply operator costs, interference with water supply and waste water treatment infrastructure, false alarms, etc.

Pending Publication Date: 2020-02-18
KRIWAN IND ELEKTRONIK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In practice, in the protection of pumps, false alarms due to EMV disturbances always occur, which cause pumps to shut down without real faults, thereby disturbing infrastructure in water supply and wastewater treatment
In addition, unnecessary costs are incurred for the water supply operator as service technicians must investigate fault reports

Method used

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  • Pump for waste water application and/or water supply
  • Pump for waste water application and/or water supply

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0021] figure 1 The pump 1 shown in refers to eg a centrifugal pump or an eccentric pump for water supply or waste water applications. It has a pump housing 2 and an electric motor 3 arranged inside the pump housing 2 . Furthermore, the pump 1 is connected to a motor protection device 4 having a protective relay 5 with a microprocessor 6 . In addition, the motor protection device is provided with various sensors connected with the protection relay 5 or the microprocessor 6 , that is, the conductivity sensor 7 , the acceleration sensor 8 , the bearing temperature sensor 9 and the winding temperature sensor 10 . Furthermore, it is also possible, for example, to connect a phase monitoring sensor 11 which is provided for measuring the phase of the supply voltage 12 for the electric motor 3 .

[0022] Furthermore, the motor protection device 4 also has a power supply 13 arranged in the protective relay 5 and connected to the microprocessor 6 . Various sensors 7-11 are connected ...

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PUM

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Abstract

The invention relates to a pump for waste water applications and / or water supply. The pump according to the invention has a pump housing and an electric motor, and an electric motor protection deviceconnected to the pump, wherein the electric motor protection device is provided with a conductivity sensor and a first contact of the conductivity sensor is electrically connected to the pump housing.Furthermore, the motor protection device has a protection relay with a microprocessor, which is connected to the conductivity sensor for evaluating an output signal of the conductivity sensor, the microprocessor being electrically connected to a ground potential of the pump housing and at least one further sensor being connected to the microprocessor.

Description

technical field [0001] The present invention relates to pumps for water supply or wastewater applications. Background technique [0002] Such pumps are valuable investment items with high acquisition costs and long replacement times. Therefore, it is desirable to protect these work machines from damage caused by critical operating states, incorrect operation or overloading. According to the prior art, protective relays from manufacturing automation are usually used. These relays monitor, for example, the temperature of the windings of the motor, the temperature of the bearings, or the leakage of the pump. Here, separate protective relays are used for each measured value. [0003] In practice, in the protection of pumps, false alarms due to EMV disturbances always occur, which cause the pumps to shut down without real failure, thereby disturbing the infrastructure in water supply and wastewater treatment. In addition, unnecessary costs are incurred for the water supply op...

Claims

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Application Information

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IPC IPC(8): H02H7/08
CPCH02H7/0822F04C2/107F04C14/28F04C2240/81F04C2270/12F04C2270/80F04D15/0088
Inventor C·埃尔威恩
Owner KRIWAN IND ELEKTRONIK