JPS60108625A - Air conditioning device in turbine power generating facility - Google Patents

Abstract

PURPOSE:To miniaturize the titled device and improve the reliability thereof by constituting the titled device used in an atomic power plant in such a manner that the reduced pressure vaporization and lowering of water temperature of a stored water circulation type atomizing device are carried out by the negative pressure operation of a nozzle provided within an air vent pipe and water is cooled with low-temperature stored water. CONSTITUTION:The nozzle 23 is provided in an air vent pipeline 21 which leads a part of exhaust vapor of the low pressure turbine to a supply water heater, and the downstream of the nozzle 23 is connected to the upper part of a hermetically closed vessel 25 containing therein a sprayer 32. By this construction, pressure is reduced in the hermetically closed vessel by the negative pressure operation of the nozzle 23, and stored water is evaporated, thus lowering the temperature. Stored water the temperature of which has been lowered, is dispersed from the sprayer 32 to cool water within a cool water pipe 33 containing no radioactivity. By this construction, the air conditioning device can be miniaturized and the reliability of the device can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an air conditioner in a turbine power generation facility that uses a turbine to generate electricity, such as a nuclear power plant or a thermal power plant.

[Technical background of the invention and its problems]

Generally, in nuclear power generation, it is necessary to cool the reactor building and turbine building, but conventionally this cooling has been performed using absorption refrigeration or turbo chillers. However, cooling using absorption refrigeration requires large equipment, and cooling using a turbo chiller requires an independent turbine.

[Purpose of the invention]

The purpose of the present invention is to solve the problems with the conventional ones and provide a compact and highly reliable air section system for turbine power generation equipment that utilizes the energy of turbine steam. shall be.

[Summary of the invention]

The present invention provides a nozzle formed in an air bleed pipe line from a turbine, a closed container communicating at the upper part with the air bleed pipe line downstream of the nozzle, and having a lower part filled with water; , a spray that circulates water stored in the lower part and sprays it inside the sealed container, and a cold water pipe that extends into the sealed container so that heat can be exchanged from the spray with the sprayed water are provided, and the kinetic energy of the steam is converted into The water in the container is evaporated at low temperature by creating a negative pressure inside the sealed reactor, and the water in the container is cooled by removing this latent heat of evaporation, and this water is sprayed into the cold water pipe. This filter is designed to cool the water in the cold water pipe.

[Embodiments of the invention]

Hereinafter, the present invention will be explained by way of examples.

FIG. 1 shows a nuclear power plant to which the air conditioner of the present invention is applied. A main steam pipe 3 is led out from a reactor pressure vessel 1 in which a reactor core 2 is formed. 3
is connected to the high pressure turbine 4, and the reactor pressure vessel 1
Steam generated in the high pressure turbine 4 is passed through the main steam pipe 3
are supplied and put to work. The high-pressure turbine 4 is also connected to a low-pressure turbine 7 via a main steam pipe 6 in which a moisture separator 5 is installed. It is supposed to be done.

The low-pressure turbine 7 is connected to a main condenser 8, and a circulating water pipe 10 in which a circulating water pump 9 is installed faces the main condenser 8. The steam in the condenser 8 is condensed and condensed. The water supply line between the main condenser 8 and the reactor pressure vessel 1 is connected to a water supply pipe 13 interposed between a condensate pump 11 and a main water supply pump 2, and the condensate is re-atomized. It is designed to supply the furnace pressure vessel l. Further, a drain cooler 14 and a feed water heater 15 are interposed in the water supply front section 13 of both pumps 11 and 12. Furthermore, a gaseous waste treatment U path 16 is connected to the main condenser 8,
An air extractor 17 and a vacuum pump 18 are installed in parallel in this processing line 16. These air extractors 1
A gaseous waste treatment system 19 is interposed downstream of the vacuum pump 18 and the gaseous waste treatment system 19, and the waste treated here is discharged into the atmosphere from the main exhaust pipe.

On the other hand, an air bleed line 21 is led out from the low pressure turbine 7, and this air bleed line 21 is connected to the main condenser 8 via the feed water heater 15 and drain cooler 14. There is.

414 or the configuration of a general nuclear power plant, the air conditioner n of the present invention is provided in the air bleed pipe 21 on the downstream side of the hIJ feed water heater 14.

As shown in FIG. 2, the air conditioner 22 includes a nozzle B and a diffuser 24 formed in the air extraction pipe 21. A closed container δ is arranged near the air bleed pipe 21, and this 'tslf
Air bleed between the upper part of the eyepiece and the nozzle z3 and the diffuser? The j path 21 is connected to the path 21 by a continuous path 21. Water is supplied to this water supply pipe 21 through a make-up water pipe 27 branching from the water supply pipe 13 on the downstream side of the condensate pump 1 shown in Fig. 1. A make-up water valve 28 installed in the make-up water pipe 27 is opened and closed by a level switch installed in a water level pipe 29 provided in the closed container 21. ing. Therefore, the water level in the closed container 21 is always controlled to the set level.

There is still no spray pipe 3 at the bottom end of the 2 sealed containers.
1 is connected, and the downstream end of this spray conduit 31 faces the upper part of the closed container 21, and a number of snowdrops 32, 32, . . . are provided protruding from this portion.

In addition, the water sprayed by the spray 32 is sprayed into the airtight container 2, and the cold water pipe 3 is heated so that heat can be exchanged.
3 is facing, and the water in this cold water pipe 33 is used to cool a nuclear reactor building, a turbine building, etc. (not shown). Note that the spray pipe 31
is equipped with a flow rate control valve (1 valve A), and the opening degree of this flow rate control valve 34 is controlled by a temperature switch 35 that detects the temperature of the cold water in the cold water pipe 33. In addition, a spray pump is interposed in the spray conduit 31.

Next, the operation of the above-described embodiment will be explained.

The steam generated in the reactor pressure vessel 1 passes through a main steam pipe 3 to drive a high-pressure turbine 4, and then is turned into dry steam by a moisture separator 5, which drives a low-pressure turbine 7. A part of the exhaust steam from the low-pressure turbine 7 is extracted to the feed water heater 15 through the bleed line 21, and finally, this exhaust steam becomes condensed water and is kept in a vacuum by the vacuum pump 18, and the circulating water line 10 to the main condenser 8 which is cooled. The exhaust steam led from the air bleed pipe 21 is blown at high speed from a nozzle n formed in the air bleed pipe 21, and is blown into the communication pipe 26 using its velocity energy. The connected closed container 5 is brought to a low pressure by negative pressure. The water in the closed container 5 is evaporated under the low pressure, its latent heat is absorbed, and the water is turned into low-temperature water. By spraying the low-temperature water from the spray 32 to the cold water pipe 33 via the spray pipe 31 by the spray bonzo 36, it is possible to supply cold water in the cold water pipe 33 that does not contain radioactivity. Note that the steam generated from the water in the closed container mixes with the turbine exhaust steam at the inlet to the nozzle n, and when passing through the diffuser U downstream of the nozzle 21 in the bleed pipe 21, its operating energy is reduced by the pressure After being converted into energy and increasing to condensing pressure, the water is led to the feed water heater 15 to heat the feed water, then drained and led to the main condenser 8.

The main condenser 8 has a sufficient degree of vacuum due to the vacuum pump 18 and is cooled by the circulating water passage 10 using sea or river water, so that the final Functions as a pongee vessel.

Therefore, it becomes unnecessary to newly install a condenser for this air conditioner. In addition, the main condenser 8 is provided with an air extractor 17 for removing non-condensable gas, etc., and such gas is treated in the gaseous waste treatment system 19, so that it does not cause burns. Most importantly, there is no need to install an air extractor.

An embodiment of the present invention has been described above, but as an application example of this embodiment, the steam bleed point can be directly connected to the main steam pipe 3,
6, or connecting the bleed air pipe 21 directly to the main condenser 8 without connecting it to the feed water heater 15 is also conceivable. In this case, the negative pressure f of the main condenser can be actively and directly used.

〔Effect of the invention〕

As explained above, the air conditioner using turbine steam of the present invention effectively utilizes the generated steam and existing power generation equipment to reduce the
There is no need to install a cold water tank, cold water can be easily obtained, and it is extremely economical in terms of equipment costs and operating costs.

In addition, the installation 110 installed in the factory is mostly static-like equipment such as piping and containers, and has a simple configuration, making it easy to maintain the equipment and improving the reliability of the system. good.

Therefore, the radioactivity from the nuclear reactor
It can be said that there is little risk of leakage.

[Brief explanation of the drawing]

, FIG. 1 shows an air conditioner according to the present invention and a nuclear reactor power generation R
FIG. 2 is a front view showing an embodiment of the air conditioner according to the present invention. 1... Reactor pressure vessel, 4... High pressure turbine, 7...
- Low pressure turbine, 8 Main condenser, 15 Feed water heater, 21 Air bleed pipe, n Air conditioner,
B: Nozzle, U: Diffuser, 5: Sealed container, 32: 2, Zorei, 33: Cold water pipe.

Claims (1)

[Scope of Claims] 1. A nozzle formed in an air bleed line from the turbine, an airtight container that communicates at the upper part with the air bleed line downstream of this nozzle and whose lower part is filled with water, and said airtight container. a sprayer disposed within the sealed container that circulates water stored in the lower part and sprays it inside the sealed container; and a cold water pipe extending into the sealed container so as to be able to exchange heat with the sprayed water from the spray. An air conditioner in a turbine power generation facility characterized by: 2. A make-up water pipe is connected to the closed container, and a control valve that is opened and closed by a level switch in the closed container is interposed in the make-up water pipe. Air conditioner in turbine power generation equipment.