Condensing steam turbine rear cylinder cooling system

A cooling system and steam turbine technology, which is applied to mechanical equipment, engine components, machines/engines, etc., can solve the problems of high cost, complex structure and large space requirement, and achieve the effects of convenient operation, high safety factor and low cost.

Pending Publication Date: 2017-08-11
中国船舶重工集团公司第七〇三研究所
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AI-Extracted Technical Summary

Problems solved by technology

Cooling the rear cylinder of the condensing steam turbine is mainly through the introduction of a water...
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Abstract

The invention belongs to the technical field of steam turbine equipment, and in particular relates to a condensing steam turbine rear cylinder cooling system which comprises a vacuum extractor, a condenser and a condensing water pump, wherein the condenser is connected with the condensing water pump via a pipeline, the condensing water pump is connected with both a spraying device and a condensed water main pipe via pipelines and tee joints, a first non-return valve, a first disconnecting valve and a regulating valve are installed on the pipeline of the condensing water pump and the spraying device, and a second non-return valve and a second disconnecting valve are installed on the pipeline of the condensing water pump and the condensed water main pipe; the condenser is connected with the vacuum extractor via a pipeline, and a temperature measurement element is arranged on the pipeline of the condenser and a condensing steam turbine rear cylinder; the condensed water is atomized by the spraying device and enters the condensing steam turbine rear cylinder; and the regulating valve is a manually-operated valve or an electrically-operated valve. The condensing steam turbine rear cylinder cooling system of the invention has the advantages of simple structure, small occupied space, low cost, and good safety and reliability.

Application Domain

Machines/enginesEngine components

Technology Topic

Condensed waterPumping vacuum +5

Image

  • Condensing steam turbine rear cylinder cooling system

Examples

  • Experimental program(1)

Example Embodiment

[0014] refer to figure 1 , a cooling system for the rear cylinder of a condensing steam turbine, the cooling system includes a vacuum pumping device 4, a condenser 3 and a condensate water pump 5, the condenser 3 is connected to the condensate water pump 5 through a pipeline, and the condensate water pump 5 is connected to the condensate water pump 5 through the pipeline and the tee respectively. The spraying device 9 is connected to the condensed jelly main pipe, the first check valve 6, the first stop valve 7 and the regulating valve 8 are installed on the pipeline of the condensed water pump 5 and the spraying device 9, and the pipeline of the condensed water pump 5 and the condensed jelly mother pipe is installed There is a second check valve 10 and a second stop valve 11; the condenser 3 is connected to the vacuum device 4 through a pipeline, and a temperature measuring element 2 is provided on the line between the condenser 3 and the rear cylinder 1 of the condensing steam turbine; The spray device 9 atomizes the condensed water into the rear cylinder 1 of the condensing steam turbine; the regulating valve 8 is a manual valve or an electric valve. The cooling system can lead a channel of condensate water from the outlet of the condensate pump 5 without using the external water spray desuperheating system, pass through the check valve 6, the stop valve 7, the regulating valve 8 and the spray device 9, and enter the condensate. The rear cylinder 1 of the steam turbine is cooled, and at the same time, by controlling the cooling water flow of the vacuum pumping device 4 and the condenser 3, the vacuum degree of the condenser 3 is controlled, and the temperature of the condensed water is adjusted, so as to realize the control of the rear cylinder 1 of the condensing steam turbine. of cooling.
[0015] according to figure 1 As shown in the system diagram, the construction of the cylinder cooling system after the completion of the condensing steam turbine. Before the condensing steam turbine is running, first open the stop valve 11, close the stop valve 7 and the regulating valve 8, then open the condensate pump 5 and the vacuum device 4, and start the system operation; when the temperature measuring element 2 shows that the rear cylinder of the condensing steam turbine When the temperature of 1 is high, open the stop valve 7, control the opening of the regulating valve 8, and cool the cylinder 1 after the condensing steam turbine; flow, so as to control the vacuum degree of the condenser 3, and then the temperature of the condensed water can be adjusted;
[0016] When the condensing steam turbine stops running, first close the stop valve 7 and the regulating valve 8, and then close the condensate pump 5, the vacuuming device 4 and the stop valve 11.

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Description & Claims & Application Information

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