Heading work: Sewage pump station

Contents

Introduction............................................................ 3 1. Selection of pumps

Determination of pump station operation mode

Definition of receiving tank volume

Determination of the diameter of the underground part of the pump station

Calculation of suction pipelines

Calculation of pressure pipelines

Calculation of pressure water ducts

Determination of required pump head

Pump selection

Selection of electric motor

Check of pump impeller turning necessity

Construction of characteristics of joint operation of pumps and water ducts

4.1 Construction of pump collaboration characteristics

4.2 Construction of characteristics of water ducts joint operation

Check of pumps and water ducts in case of accident

Development of the high-altitude diagram of the pump station

6.1 Determination of pump axis elevation

6.2 Determination of the height of the above-ground part of the pump station

6.3. Determination of depth of pressure water ducts

Selection of pump station equipment

Selection of number of standby pumps

Selection of drain pumps

Selection of power transformers

Selection of grates and crushers

Selection of lifting equipment

Determination of head loss value in internal communications of pump station

Determination of economic parameters of the pumping station........... 28 List of literature

Appendix A: KNU Equipment Specification

Introduction

The purpose of this course work is to master the educational material devoted to the discipline "Pumping and blowing stations." During the development of course work, lectures were used, as well as practical exercises, which made it possible to get as close as possible to the design basics of such a large facility as a sewage pumping station (KNU). The main task in the development of this course work was, applying the recommendations of the teaching manual, to learn how to conduct calculations and design the KNS.

Sewage water of settlements is supplied through free gravity pipelines to the main sewage pumping station, from which it is supplied by pumps through pressure water pipelines to the receiving chamber of sewage treatment facilities of the settlement. In order to design the sewage pumping station (CN) it is necessary to perform the following calculations: determine the operating mode of the CN; determine the volume of the receiving tank of this pump station; perform hydraulic calculation of suction and pressure pipelines; determine the required pump head; select the type of pump and motor driving it; determine the number of standby pumps; calculate the turning of the pump impeller; schedule the joint operation of pumps and water pipelines; check pumps and water ducts to pass the emergency flow; determine the number of emergency switches on pressure water ducts; develop a high-altitude scheme of the KNU; select equipment to remove floating waste from the water; select the drain pump; pick up the power transformer; pick up lifting equipment; select shaped parts and fittings; clarify head losses in internal communications of the pump station; determine the main technical and economic parameters of the pump station.