Основы эксплуатации систем теплоснабжения. Испытание, промывка и пуск теплосетей

Start-up of water heating networks. When starting up water heating networks, the pipelines are filled, circulation is established, consumers are turned on and start-up adjustments are made.

• Start-up of water heating networks. When starting up water heating networks, the pipelines are filled, circulation is established, consumers are turned on and start-up adjustments are made.
• Before filling heating networks, drainage devices and valves on branches and jumpers between the supply and return pipelines must be closed. Air devices and sectional valves in areas must be open.

The pipelines are filled with water from a heat source with a temperature of 40 - 45 0 C through the return pipeline. During filling, the condition of all heating network equipment is checked. As they fill, the air vents are closed by those on duty along the route. When filling the return line, open the jumper and the supply pipeline is filled in the same sequence.

• The pipelines are filled with water from a heat source with a temperature of 40 - 45 0 C through the return pipeline. During filling, the condition of all heating network equipment is checked. As they fill, the air vents are closed by those on duty along the route. When filling the return line, open the jumper and the supply pipeline is filled in the same sequence.

In winter conditions, at t n ˂ - 20 0 C, the supply and return pipelines are filled simultaneously, in sectional sections. The networks are filled with water at a temperature of 50 - 60 0 C, while all drainage and air pipes must be open. The air valves are closed as the pipelines are filled, and the drain valves are closed when the temperature of the discharged water is 30 0 C. After starting up the heating networks, a control inspection is carried out within 72 hours (three days): the tightness of the compensator seals, the condition of the supports, thermal insulation, the position of the pipelines on the moving parts are checked. supports (especially on turns), ease of opening and closing the valves.

• In winter conditions, at t n ˂ - 20 0 C, the supply and return pipelines are filled simultaneously, in sectional sections. The networks are filled with water at a temperature of 50 - 60 0 C, while all drainage and air pipes must be open. The air valves are closed as the pipelines are filled, and the drain valves are closed when the temperature of the discharged water is 30 0 C. After starting up the heating networks, a control inspection is carried out within 72 hours (three days): the tightness of the compensator seals, the condition of the supports, thermal insulation, the position of the pipelines on the moving parts are checked. supports (especially on turns), ease of opening and closing the valves.