JPH05263610A - Power generating facility - Google Patents

Abstract

PURPOSE:To effectively utilize heat of steam by introducing the steam to be discharged from a steam turbine to at least an evaporator of an absorbing type heat pump device so as to utilize it as a heat source, and then, introducing the condensed water to a condensate tank. CONSTITUTION:High pressure steam generated in a boiler is supplied to a condensing turbine 2 through a high pressure steam header 1. An absorbing type heat pump device 3 is driven by the discharged steam as a heat source. Water condensed in the absorbing type heat pump device 3 is stored in an exhaust condensate tank 4. A hot water header 5 is provided. Low pressure steam taken out of the condensing turbine 2 is supplied to an evaporator 11 of the absorbing type heat pump device 3, and the extracted high pressure steam is supplied to a regenerator 13, to be utilized as a drive heat source in a heat pump cycle. Water stored in the exhaust condensate tank 4 is supplied in order into an absorber 12 and a condenser 14 through a pipe 18 for supplying fluid to be heated, followed by heating. Consequently, heat of the steam can be utilized effectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to power generation equipment.

[0002]

2. Description of the Related Art Conventionally, some power generation facilities use a condensing turbine. In a power generation facility using this condensate turbine, as shown in FIG. 3, high-pressure steam from a boiler is supplied to a condensate turbine generator 102 via a high-pressure steam header 101 to generate power. The steam discharged from the condensate turbine of the condensate turbine generator 102 is condensed in the exhaust vacuum condenser 103 to become water, which is stored in the exhaust condensate tank 104 and then condensed via the condensate transfer pipe 105. It is sent to a water tank (not shown).

A portion of the steam from the high-pressure steam header 101 and the condensate turbine 102 is guided to the low-pressure steam header 106 and then supplied to the heat utilization facility in the power generation facility.

[0004]

However, as described above, most of the steam leaving the condensing turbine of the generator 102 is condensed in the condenser 103, so that heat is not recovered and is discharged to the outside of the system. It was uneconomical.

Therefore, an object of the present invention is to provide a power generation facility which can solve the above problems.

[0006]

In order to solve the above problems, a power generation facility of the present invention is a power generation facility for guiding high pressure steam to a steam turbine for power generation to generate power, and steam discharged from the steam turbine. Is introduced into at least the evaporator of the absorption heat pump device and used as a heat source, and then the condensed water thereof is introduced into the condensate tank.

[0007]

According to the above construction, the steam discharged from the steam turbine is introduced into the absorption heat pump device, used as the heat source thereof, and then introduced into the condensate tank.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. In the first embodiment, a case will be described in which a condensing turbine is used as a steam turbine for power generation, and a first type is used as an absorption heat pump device driven by steam emitted from the turbine. .. The absorption heat pump of the first type obtains a fluid at an intermediate temperature level between the high temperature heat source fluid and the low temperature heat source fluid (waste heat source fluid) with the help of the high temperature heat source fluid (steam).

That is, the power generation equipment includes, for example, a condensate turbine generator 2 to which high-pressure steam generated in a boiler is supplied via a high-pressure steam header 1, and a condensate turbine of the condensate turbine generator 2. It is composed of an absorption heat pump device 3 that operates using the discharged steam as a driving heat source, an exhaust condensate tank 4 that stores water condensed by the absorption heat pump device 3, and a hot water header 5.

Then, the absorption heat pump device 3 described above.
Is an evaporator 11 that evaporates a refrigerant liquid (water), and an absorber 12 that absorbs the refrigerant vapor (water vapor) evaporated by the evaporator 11 into an absorbing liquid (for example, a lithium bromide aqueous solution) to generate heat. And a regenerator 13 that regenerates the absorption liquid by absorbing the refrigerant vapor in the absorber 12 and heating the diluted diluted absorption liquid to evaporate the refrigerant, and the refrigerant vapor separated in the regenerator 13. And a condenser 14 for condensing water and supplying low-temperature steam from the condensing turbine to the heat transfer tube in the evaporator 11, and the water condensed in the evaporator 11 is supplied to the exhaust condensing tank 4. Leading first heating steam supply pipe 16
And supplying the high temperature steam extracted from the condensate turbine to the heat transfer tube in the regenerator 13,
The second condensing steam supply pipe 17 for guiding the water condensed in step 1 to the warm water header 5 and the pump 19 in the middle of the exhaust condensing water tank 4
It is composed of a heated fluid supply pipe 18 for sequentially supplying water (fluid to be heated) stored in the absorber 12 and the condenser 14.

Therefore, after the high-pressure steam is supplied from the high-pressure steam header 1 to the condensing turbine generator 2 for power generation, the low-pressure steam extracted from the condensing turbine is the evaporator of the absorption heat pump device 3. The high-temperature steam extracted from the condensing turbine is supplied to the regenerator 13 and is used as a driving heat source of the heat pump cycle. Then, after the water stored in the exhaust condensate tank 4 is sequentially supplied into the absorber 12 and the condenser 14 via the heated fluid supply pipe 18 and heated to a predetermined temperature,
Transferred to a condensate tank (not shown).

On the other hand, water condensed by releasing heat in the evaporator 11 is guided to the exhaust condensate tank 4. In addition, the regenerator 13
The hot water that has released and condensed heat is supplied through the hot water header 5 to, for example, a heat utilization facility in a power generation facility.

As described above, the steam discharged from the condensing turbine releases water as a driving heat source not as a condenser but as a driving heat source to become water, that is, is condensed, so that the heat is effectively utilized. To be done.

Next, a second embodiment of the present invention will be described with reference to FIG. In the first embodiment, the absorption heat pump device of the first type was used as the absorption heat pump device provided in the power generation facility, but in the second embodiment, the absorption heat pump device of the second type was used. It is a thing. The second-type absorption heat pump device uses high-temperature water by using thermal energy of a low-temperature heat source as drive energy.

Since the second embodiment and the first embodiment have almost the same structure, the same parts are designated by the same reference numerals and only the location of the absorption heat pump device will be described. To do.

That is, in the second embodiment, as shown in FIG.
As shown in FIG. 3, the condensing turbine generator 2 is used, and the steam discharged from the condensing turbine is supplied to the evaporator 11 and the regenerator 13 of the absorption heat pump device 21 via the first heating steam supply pipe 16. It is supplied in parallel. Then, the condensate in the exhaust condensate tank 4, which is a fluid to be heated, is guided only to the inside of the absorber 12 via the fluid to be heated supply pipe 18 and heated, and the cooling water is passed through the cooling water supply pipe 20. It is supplied to the condenser 14. In FIG. 2, 6 is a low-pressure steam header for taking out steam from the condensing turbine of the condensing turbine generator 2, from which steam is supplied to the heat utilization facility in the power generation facility.

[0017]

As described above, according to the configuration of the present invention, the steam discharged from the steam turbine is guided to the absorption heat pump device, used as the heat source thereof, and then guided to the condensate tank. Unlike the conventional one, which directly leads to the condenser, the heat of steam can be effectively used.

[Brief description of drawings]

FIG. 1 is a flow diagram showing a schematic configuration of a power generation facility according to a first embodiment of the present invention.

FIG. 2 is a flow diagram showing a schematic configuration of power generation equipment according to a second embodiment of the present invention.

FIG. 3 is a flow diagram showing a schematic configuration of power generation equipment in a conventional example.

[Explanation of symbols]

 2 Condensate turbine generator 3 Absorption type heat pump device 11 Evaporator 12 Absorber 13 Regenerator 14 Condenser 16 First heating steam supply pipe 17 Second heating steam supply pipe 18 Heated fluid supply pipe 20 Cooling water supply pipe 21 Absorption Type heat pump device

Claims (1)

[Claims] 1. A power generation facility for guiding high-pressure steam to a steam turbine for power generation to generate power, wherein steam discharged from the steam turbine is used as a heat source by guiding it to at least an evaporator of an absorption heat pump device. A power generation facility characterized in that the condensed water is then guided to a condensate tank.