Thermal power plant

 

(57) Abstract:

The invention relates to a power system and is intended for use in thermal power plants. Thermal power plant includes a steam turbine regenerative heaters low pressure, is included in the path of the main turbine condensate, vacuum deaerator incremental feed water with piping of a heating agent, connected by pipeline deaerated additional feedwater to the path of the main turbine condensate before one of the regenerative heaters. Pipeline heating agent of the vacuum deaerator connected to the condensate line of the regenerative heater, to which to route the main condensate turbine connected pipeline system feed incremental feed water. The technical result of the present invention is to improve the efficiency and reliability of thermal power plants. 1 Il.

The invention relates to the field of power engineering and can be used in thermal power plants.

Known counterparts - thermal power station, containing steam turbine regenerative heaters low pressure, in which Odom heating agent, the connected pipeline deaerirovannye additional feedwater to the path of the main turbine condensate before one of the regenerative heaters, plumbing heating agent is connected to the steam production of the turbine selection and pipeline cooled condensate production (see Oliker I. I., Permyakov Century A. Thermal deaeration of water in thermal power plants. L.: Energy, 1971, S. 130, Fig. 3-7). This analog adopted as a prototype.

Disadvantages analogs and prototypes are reduced efficiency and reliability of thermal power plants. Use as a heating agent production of condensate is cooled in the heater to a temperature of 55-60oC and past condensated, does not allow for effective vacuum deaeration additional feedwater due to the low temperature condensate production, which lowers the reliability of thermal power station. Using for this purpose the pair production selection pressure of 6 kgf/cm2and more lowers the efficiency of thermal power plants due to the fact that the heat received incremental feed water from the steam high tx2">

The technical result achieved by the present invention is to increase the efficiency and reliability of thermal power plants.

To achieve this result, the proposed thermal power plant containing steam turbine regenerative heaters low pressure, is included in the path of the main turbine condensate, vacuum deaerator incremental feed water with piping of a heating agent, connected by pipeline deaerated added water to the path of the main turbine condensate before one of the regenerative heaters.

The peculiarity lies in the fact that the pipeline heating agent of the vacuum deaerator connected to the condensate line of the regenerative heater, to which to route the main condensate turbine connected pipeline system feed incremental feed water.

New interconnection element can increase the reliability and efficiency of thermal power plants due to the use of vacuum deaerator heating agent with parameters sufficient for effective deaeration, and use as a warming agent and steam condensate nizkopotentsialnogo search patent and scientific and technical sources, and identify sources contains information about the equivalents of the claimed invention, has allowed to establish that the applicant had not discovered similar, characterized by signs, identical with all the essential features of the claimed invention.

Therefore, the claimed invention meets the condition of "novelty."

To verify compliance of the claimed invention the term "inventive step", the applicant conducted an additional search of the known solutions to identify signs that match the distinctive features of the prototype of the features of the declared thermal power station. The search results showed that the claimed invention not apparent to the expert in the obvious way from the prior art because the prior art defined by the applicant, not the influence provided the essential features of the claimed invention transformations to achieve a technical result. In particular, the claimed invention is not provided by the addition of known means of any known part attached to it according to certain rules to achieve a technical result, in respect of which it is the effect of such additions.

Consequently the reflected schematic diagram of thermal power station, containing steam turbine 1 with regenerative heaters low pressure 2,3,4,5 included in the path of the main condensate turbine 6, the vacuum deaerator additional feedwater 7 pipeline heating agent 8 that is connected to the condensate line of the regenerative heater 3, to which to route the main condensate turbine connected pipeline system feed incremental feed water 9.

Thermal power plant works as follows.

Spent in the steam turbine 1 steam condense in the condenser, after which the main turbine condensate successively heated in the regenerative heaters low pressure 2,3,4,5. Leakage of feed water from the steam cycle thermal power station compensate for incremental feed water, which dearyou in vacuum deaerator 7 and directed into the path of the main turbine condensate before regenerative heater 3. In the vacuum tank 7 through the pipe 8 serves the heating agent is a condensate of regenerative heater 3, in front of which mix deaerated incremental feed water from the main turbine condensate, which allows to provide sufficient divodas. Next, the main condensate with incremental feed water dearyou in the high pressure deaerator and feed pumps served in the high pressure heaters and steam boiler.

Thus, the proposed approach can provide an effective vacuum deaeration additional feedwater using to heat the heating agent regenerative low-grade selection of the pair, i.e., to increase the reliability and efficiency of thermal power station.

The above data confirm that the implementation of the use of the declared thermal power station the following cumulative conditions:

- the declared thermal power station is designed for use in industry in the field of heat;

for the declared thermal power station, as it is characterized in the claims, confirmed the possibility of its implementation using the steps described in the application of tools and techniques;

- thermal power plant embodying the claimed invention, it is able to achieve the desired technical result.

Therefore, the requested image is containing steam turbine regenerative heaters low pressure, included in the tract of the main turbine condensate, vacuum deaerator incremental feed water with piping of a heating agent, connected by pipeline deaerated additional feedwater to the path of the main turbine condensate before one of the regenerative heaters, characterized in that the piping of a heating agent of the vacuum deaerator connected to the condensate line of the regenerative heater, to which to route the main condensate turbine connected pipeline system feed incremental feed water.

 

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