Gas supply of the city district - Coursework

Design and Graphics Job

Option: 18/92

Determine the estimated annual and hourly gas flow rates and trace low and medium pressure gas pipelines.

Source Data:

gasified settlement: Krasnodar

General plan number of the construction area: 6

type of travel and spending coverage: improved

population density in the construction area: 370 people/ha

External construction volume of residential buildings per person: 54 m3

gas field and gas composition: Achakskoye

gas pressure at the point of connection of the city gas network to the GVC: 0.4 MPa

distance from GRS to city gas network: 6.5 km

location of GRS relative to the city area: SA

percentage of coverage of household, communal and concentrated consumers with gas supply: baths and laundry - 39%; canteens - 29%; bakery - 0.6 tons/day.

Introduction

The goal of the course project is to consolidate theoretical material on the main issues of the Gas Supply course, acquire skills in independent work in the field of gas supply systems design and experience with reference and special literature.

In the design, it is necessary to develop a two-stage gas distribution system with the implementation of the first stage by medium (high) pressure gas pipelines. and the second - low pressure. From the medium (high) pressure network, consumers should design more concentrated: GRP, boiler room, bakery, bath, laundry. At the same time, the boiler room is located taking into account the "rose of the winds" for the designed area, and the bakery, bath and laundry are arbitrary. Household and utility consumers are designed from the low pressure network, the list of which is accepted as per SP421012003. The low pressure network must be designed as a ring.

Modern city distribution systems are a complex complex of structures, consisting of the following main elements: gas networks of low, medium and high pressure, gas distribution stations, gas distribution points and installations. In the above stations and installations, the gas pressure is reduced to the required value and automatically kept constant. They have automatic safety devices that exclude the possibility of increasing gas pressure in networks above normal.

The gas supply system shall ensure uninterrupted gas supply to consumers, be safe in operation, simple and convenient to maintain, shall provide for the possibility of disconnecting its individual elements or sections of gas pipelines for emergency or repair work.

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