SU1366841A1 - System of technical water supply of steam turbine - Google Patents

Abstract

Invention m. used in the design and operation of technical water supply systems for steam turbine condensers. The purpose of the invention is to increase the efficiency and reliability of the system. The pipe 11 with the valve 12 of the air outlet is connected to the upper part of the drain chamber 6 of the condenser 4, which ensures complete and rapid discharge of air from the entire condenser without draining the water. The connecting pipe (TP) 10 at the inlet is connected to the lower part of the chamber, and at the outlet - to the waste TP 3, which has a bend 14 upwards on a horizontal section. This embodiment reduces the possibility of zappovogo air outlet for TP 10 and prevents the mixing of air in the inflection zone of TP 10 and 3. 1 Cp. f-ly, 1 ill. S (l

Description

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The invention relates to a power system and can be used in the design and operation of technical water supply systems for steam turbine condensers.

The aim of the invention is to increase the economy and reliability of the water supply system by reducing the start-up time while reducing the dynamic loads on the pipelines and the pump.

The drawing schematically shows a steam turbine water supply system.

The technical water supply system contains a pump 1, a supply 2 and a waste 3 pipelines with a horizontal section, a condenser 4 with a receiving 5 and a drain 6 chambers, a water supply bay 7, a drain well 8, a starting ejector 9, a connecting pipeline 10 and a branch pipe 11 s valve 12 release of air. Pipe II with

the valve 12 is connected to the upper part 25 through the connecting pipe 10.

the drain chamber 6 of the condenser 4. The connecting pipe 10 at the inlet is connected to the lower part of the drain chamber b, and at the outlet to the waste pipe 3 below the drain chamber 6 of the condenser 4. The connecting pipe is equipped with a check valve 13. On the horizontal section of the drain pipe 3 before the drain well 8 Fold 14 is made up.

The system works as follows.

Pump 1 is connected to the network and supplies water from the downstream 7. Water fills the discharge pipe 2 and condenser 4. Part of the air is removed with the help of starting ejector 9, and its main mass is forced out through pipe 11 through valve 12. air after the pressure in the condenser 4 is sufficient to open / open the valve 12. When the water level in the condenser 4 rises, water flows from the lower part of the discharge chamber 6 to the joint; The main conduit 10 through the open non-return valve 13 and further into the discharge conduit 3. In the latter, an ejection effect is created, by which air is captured and drawn from the upper part of the discharge conduit 3. When performing the drain conduit 3 with bend

The latter leads to a decrease in the dynamic loads on the pipelines and on the pump I.

Claims (2)

1. A steam turbine technical water supply system containing a condenser with a receiving and a discharge chamber, a downstream and a drain well, an ejector starting pipe, a connecting pipe and a branch pipe with an air exhaust valve, which have an inlet and outlet pipelines and a drainage pipe with a horizontal section, and 40 sch the fact that, in order to improve the efficiency and reliability of the system by reducing the start-up time while reducing dynamic 45 loads on pipelines and the pump, a branch pipe with an air discharge valve is connected to the upper part of the condenser drain chamber, and an inlet connecting pipe is connected 50 to the bottom of the condenser drain chamber, and at the outlet to the discharge pipeline below the condenser drain chamber. 55 2. The system of claim 1, in accordance with clause 1, so that the waste pipe in the horizontal section in front of the drain well is made up with a bend. 14 upward in its horizontal section in front of the drain well 8, the air from the inflection zone 4 is removed by the flow of water passing through the connecting pipe 10 without mixing it with the air in the upper part of the discharge pipeline 3. Installing the pipe 11 valve 12 releasing air in the upper part of the drain chamber 6 of the condenser 4 allows for a more complete and faster discharge of air from the entire condenser without draining water from it compared to with traditional valve installation on the crest of a siphon outlet. The connection of the pipeline 10 at the inlet to the bottom of the discharge chamber 6, and at the outlet to the connecting pipe water provides more efficient removal of air from both the condenser 4 and the pressure 2 and drain 3 pipelines. This reduces the possibility of a volley release of air. The latter leads to a decrease in dynamic loads on pipelines and pump I. 30 Claims. 1. The technical water supply system of the steam turbine, comprising a pump, supply and discharge pipelines with a horizontal section, a condenser with a receiving and drainage chambers, a downstream and drainage well, an ejector start, a connecting pipeline and a branch pipe with an air discharge valve, are distinguished 40 sch the fact that, in order to improve the efficiency and reliability of the system by reducing the start-up time while reducing dynamic 45 loads on pipelines and the pump, a branch pipe with an air discharge valve is connected to the upper part of the condenser drain chamber, and an inlet connecting pipe is connected 50 to the bottom of the condenser drain chamber, and at the outlet to the discharge pipeline below the condenser drain chamber. 55 2. The system under item 1, about t l and ch and-yu and so that the waste pipeline on a horizontal section in front of the drain well is made with a bend upwards.