KR102055708B1 - Draft type condenser with improved of cooling efficiency by using heat pipe inserted in the steam turbine output steam pipe - Google Patents

Abstract

The present invention relates to a suction fan (draft) type air cooled condenser. According to the present invention, a heat pipe is inserted into a steam exhaust pipe of an air cooled turbine condenser of a power generation system using steam to increase the steam cooling efficiency to facilitate heat exchange. Therefore, the change in cooling efficiency according to the temperature of the outside air is minimized, and the number of heat exchanging tubes of the condenser is reduced, thereby reducing the size of the existing air cooled condenser. The draft type condenser of the present invention comprises: a motor; a linear screw; an actuation body; and a reflector.

Description

Draft type condenser with improved of cooling efficiency by using heat pipe inserted in the steam turbine output steam pipe}

The present invention inserts a heat pipe into the steam exhaust pipe of the air-cooled turbine condenser of the power generation system using steam to increase the steam cooling efficiency to facilitate heat exchange, thereby reducing the number of tubes of the condenser heat exchanger of the conventional air-cooled condenser It relates to an air-cooled multiplier of the suction fan (draft) method that can reduce the size.

In power generation systems such as nuclear power plants and thermal power plants, condensers that cool the turbine exhaust steam and make revenge play a very important role in power generation.

The air-cooled condenser (ACC) is a power generation cooling system that converts steam into condensed water by using ambient temperature air, unlike the conventional water-cooled condenser. Or the market is growing.

In order to increase the cooling efficiency according to the air temperature in the air according to the season in the air-cooled condenser, there is a problem that the size of the heat exchanger and the size of the fan is increased, so that the installation space is increasingly required.

(Document 1) Republic of Korea Patent Publication No. 10-2009-0113485, "Air-cooled cooling device" (Document 2) Korean Patent Laid-Open Publication No. 10-2011-0037719, "Method of manufacturing heat exchange module of a plurality of machines" (Patent 3) Korean Patent Application Publication No. 10-2014-0044348, "Waste heat recovery apparatus of a turbine condenser via a fin heat pipe module"

The present invention inserts the heat pipe into the steam exhaust pipe to absorb the heat of the steam exhausted from the turbine through the evaporation unit of the heat pipe, and to increase the steam cooling efficiency by cooling the condensation unit of the heat pipe by a cooling fan or the number of heat exchange tubes or SUMMARY OF THE INVENTION An object of the present invention is to provide a draft type condenser using a heat pipe inserted in a space-intensive steam exhaust pipe having excellent cooling efficiency that can reduce its size and increase power generation productivity.

In order to achieve the above object, the present invention provides a steam exhaust pipe (104) into which steam is introduced from a turbine, and a heat exchanger module (110) connected to the steam exhaust pipe (104) to generate steam by cooling the steam and the heat exchanger. Draft method consisting of a plurality of pipes (103) for collecting and discharging the plurality generated in the module 110, and a cooling fan 102 is installed on the heat exchanger module 110, the air exchanger module 110 is air-cooled In the condenser, a plurality of heat exchanger modules 110 to which the steam exhaust pipes 104 are fastened are installed in one plurality of pipes 103, and the heat pipe 120 is evaporated inside the steam exhaust pipes 104. The unit 121 is positioned, and the condensation unit 123 of the heat pipe 120 is positioned outside the steam exhaust pipe 104, whereby the heat pipe 120 cools the steam flowing through the steam exhaust pipe 104. Is configured to.

At this time, the fin 122 is formed on the outer surface of the housing 125 of the evaporator 121 of the heat pipe 120 located inside the steam exhaust pipe 104.

In addition, the fin 124 is formed on the outer surface of the housing 125 of the condensation unit 123 of the heat pipe 120 located outside the steam exhaust pipe.

In addition, the condensation unit 123 is characterized in that the heat pipe 120 is bent to be positioned below the cooling fan 102.

In addition, the heat pipe 120 is characterized by being formed to be inclined upward at a predetermined angle toward the condensation unit 123.

In addition, the condensation part 123 of the bent heat pipe 120 is characterized in that the inclined upward at a predetermined angle in the direction toward the end.

In addition, the heat exchanger module 110 is connected to the steam exhaust pipe 104, the heat exchange tube 111 is connected to the plurality of pipes 103 through the cooling plate 112 of the plate shape stacked at a predetermined interval and By having a plurality of fins 115 and the steam flow path 114 between the fins 115 is inserted into the heat exchange tube 111 is composed of a heat transfer tube 113 in close contact with the inner surface of the heat exchange tube 111 The heat exchanger tube 113 is characterized in that the heat exchange area is configured to be wide.

According to the present invention configured as described above, the heat of the exhaust steam passing through the power generation turbine is absorbed to the maximum through the heat pipe, and the heat transferred to the heat exchanger tube into which the star-shaped endothermic tube is inserted is made through the cooling fan so that heat exchange can be performed quickly. By increasing the cooling efficiency by cooling, power generation efficiency can be increased to continuously produce electricity.

Therefore, the present invention can minimize the change in the cooling efficiency due to the ambient air temperature, it is possible to reduce the size of the existing air-cooled condenser and to minimize the installation constraints according to the space.

1 is a perspective view showing a condenser according to the present invention.
Figure 2 is a cross-sectional view showing the internal structure of the condenser according to the present invention.
Figure 3 is a perspective view showing a heat exchanger module installed in the condenser of the present invention.
Figure 4 is an exploded perspective view showing the structure of the heat exchanger module installed in the condenser of the present invention.
5 is a perspective view showing a steam exhaust pipe and a heat pipe installed in the condenser of the present invention.
6 shows a heat pipe structure;
7 and 8 are views illustrating a steam exhaust pipe and a heat pipe installed in the condenser of the present invention.

Hereinafter, with reference to the preferred embodiments of the present invention and the accompanying drawings will be described in detail, the same reference numerals in the drawings will be described on the assumption that the same components.

When any one element in the description or claims of the invention "includes" another element, unless otherwise stated, it is not limited to consisting only of that element, and other elements are not interpreted. It should be understood that it may include more.

In the draft type condenser 100 using the heat pipe inserted into the steam exhaust pipe according to the present invention, as illustrated in FIGS. 1 and 2, steam exhaust pipes 104 into which steam discharged from the turbine flows are formed on both sides of the upper part, and the condenser is provided. A plurality of conduits 103 are formed in the lower center of the condensate inlet and collect, and the heat exchanger module connects the steam exhaust pipes 104 and the conduits 103 to discharge steam to condense heat. 110 is installed.

At this time, the heat exchanger module 110 is installed to be inclined as shown in Figure 2 is preferably configured to connect two steam exhaust pipe 104 and one plurality of pipes (103). In the embodiment of the present invention, but configured to connect two steam exhaust pipe 104 and one plurality of pipes 103, it may be configured to connect two steam exhaust pipes 104 and two plurality of pipes (103).

And the cooling fan 102 is installed on the upper portion of the condenser 100 is configured to cool the steam while the outside air passes through the soft exchange module (110).

As shown in FIG. 3, the heat exchanger module 110 is configured by stacking a plurality of plate-shaped fins 112 and passing through a fin-shaped plate 112 having a predetermined number of heat exchange tubes 111 stacked thereon. Is installed.

The heat exchange tube 111 of the heat exchanger module 110 connects the steam exhaust pipe 104 and the plurality of pipes 103 so that hot steam introduced from the turbine into the steam exhaust pipe 104 is transferred to the heat exchange tube of the heat exchanger module 110. Steam is condensed through the 111 to form a plurality, and the condensed plurality is configured to be collected and discharged into the plurality of pipes 103.

The heat exchanger tube 111 installed in the heat exchanger module 110 is installed at the fins 112 at predetermined intervals, so that a large number of heat exchanger tubes 111 may be installed per unit area, as shown in FIG. 3. It is preferable to provide this pin 112 in a zigzag form.

When steam flows through the heat exchange tube 111, the heat of steam is conducted to the heat exchange tube 111, and the heat of the heat exchange tube 111 is conducted to the plurality of fins 112 so that the fins are driven by the operation of the cooling fan 102. Steam flowing through the heat exchange tube 111 is condensed while being cooled by the air passing through the 111 to form a plurality.

At this time, it is preferable to insert the heat transfer tube 113 into the heat exchange tube 111 as shown in Figure 4 so that the heat of steam from the steam flowing through the heat exchange tube 111 to the heat exchange tube 111 can be quickly conducted.

As shown in FIG. 4, the heat transfer tube 113 is formed by forming the outer diameter of the heat transfer tube 113 in the same manner as the internal diameter of the heat exchange tube 111, so that the heat transfer tube 113 is inserted into the heat exchange tube 111. The outer surface of the) is in close contact with the inner surface of the heat exchange tube 111 is configured to facilitate the heat conduction.

The hot steam flowing from the steam exhaust pipe 104 flows into the heat transfer tube 113, and by forming a plurality of fins 115 inside the heat transfer tube 113, the steam flow path 114 of the heat transfer tube 113. By maximizing the heat exchange area with the steam by the fin 115 when the high-temperature steam flows into), it is possible to significantly reduce the size of the heat exchanger module 110 by increasing the heat exchange rate.

The heat exchanger module 110, one heat exchanger module 110 may be installed between the steam exhaust pipe 104 and the plurality of pipes 103, several heat exchanger module 110 is connected in series to the steam exhaust pipe It may be provided between the 104 and the plurality of pipes (103).

The heat exchanger module 110 described above is installed between the steam exhaust pipe 104 and the plurality of pipes 103 to cool the steam to generate a plurality, and the present invention provides a heat exchange between the steam exhaust pipe 104 and the plurality of pipes 103. In addition to cooling the steam by installing the air supply module 110, the heat pipe 120 is installed inside the steam exhaust pipe 104, and the steam exhaust pipe 104 into which steam is introduced from the turbine is configured to cool the steam.

As illustrated in FIG. 5, the heat pipe 120 is installed in the steam exhaust pipe 104 to configure the heat pipe 120 to directly cool steam flowing in the steam exhaust pipe 104.

In general, as shown in FIG. 6, the heat pipe is contacted with the housing 125 in the sealed cylindrical housing 125 to form a wick 126 and a vapor space 127, and evaporate in the longitudinal direction. The section 121 and the condenser 123 section is configured.

The wick 126 is made of a porous material such as gold mesh, foam, felt, fiber, sintered metal, etc., and HCFC-22, HCFC-123, HCFC-134a, etc. may be used as the working fluid.

When the evaporator 121 of the heat pipe 120 receives the heat energy of the heat source, the working fluid of the evaporator evaporates and moves along the vapor space 127 until it reaches the condensation part. The cyclic process of moving to the evaporator along the wick 126 is repeated.

As shown in FIG. 5, the evaporator 121 of the heat pipe 120 is inserted into the steam exhaust pipe 104 and positioned, and the condensation part 123 of the heat pipe 120 is disposed outside the steam exhaust pipe 104. Place it in

One side of the steam exhaust pipe 104 is opened so that hot steam is introduced from a turbine (not shown), the other side of the steam exhaust pipe 104 is blocked by the blocking plate 105, and the heat pipe 120 is the blocking plate ( The condensation part 123 of the heat pipe 120 is positioned outside the steam exhaust pipe 104 through the 105.

In addition, a plurality of heat exchanger connectors 106 are formed at the lower portion of the steam exhaust pipe 104 such that steam of the steam exhaust pipe 104 is transferred to the heat exchanger tube 111 of the heat exchanger module 110 through the heat inductor connector 106. Configured to flow.

According to the present invention, by installing the heat pipe 120 inside the steam exhaust pipe 104, the steam may be cooled in the steam exhaust pipe 104, which is a step before the high temperature steam of the turbine flows to the heat exchanger module 110 and is cooled. Configure it to be.

As shown in FIG. 5, the evaporator 121 of the heat pipe 120 is positioned inside the steam exhaust pipe 104, and the condensation part 123 of the heat pipe 120 is located outside the steam exhaust pipe 104. By positioning, the condensation unit 123 of the heat pipe 120 receives heat from steam in the steam exhaust pipe 104 and discharges it to the outside of the steam exhaust pipe 104.

At this time, the working fluid inside the heat pipe 120 is preferably configured to be inclined upward at a predetermined angle (β) toward the condensation unit 123 from the evaporator 121 as shown in FIG.

The condensation unit 123 of the heat pipe 120 is positioned below the cooling fan 102 as shown in FIG. 2, so that the condensation of the heat pipe 120 is caused by the air at normal temperature sucked from the outside by the cooling fan 102. It is preferable to configure so that the part 123 can be cooled rapidly.

In order to place the condensation unit 123 of the heat pipe 120 under the cooling fan 102, the heat pipe 120 is bent as shown in FIGS. To be located at

In addition, it is preferable to form the fin 122 radially on the outer surface of the housing 125 of the evaporator 121 so that the heat exchange with the hot steam in the evaporator 121 of the heat pipe 120 is smooth, condensation. It is preferable to form the fin 124 on the outer surface of the housing 124 of the condensation unit 123 so that heat exchange with the atmosphere in the unit 123 may be smoothly performed.

As shown in FIG. 5, when the condensation unit 123 of the heat pipe 120 is bent, the condensation unit 123 is inclined upward at a predetermined angle α as the condensation unit 123 moves toward the end to smoothly circulate the working fluid. It is preferable to configure it.

Looking at the operation of the draft system multiplier according to the present invention.

The high temperature steam of the turbine flows into the steam exhaust pipe 104 of the condenser 100, and the hot steam flows into the heat exchanger module 110 through the heat exchanger connector 106 under the steam exhaust pipe 104.

At this time, when the hot steam flows through the steam exhaust pipe 104, the steam is firstly cooled through the heat pipe 120 installed in the steam exhaust pipe 104, and the hot steam is secondarily cooled in the heat exchanger module 110. As a result, a plurality is generated, collected by the plurality of pipes 103, and discharged into a condensate tank (not shown).

According to the present invention configured as described above, the hot steam does not simply flow through the steam exhaust pipe 104, but by installing the heat pipe 120 in the steam exhaust pipe 104, the steam is cooled in the steam exhaust pipe 104. And by inserting the heat transfer tube 113 in the heat exchange tube 111 of the heat exchanger module 110 has the advantage that the size of the condenser 100 can be minimized by maximizing the heat exchange area.

In addition, the plurality of heat exchanger module 110 and the steam exhaust pipe 104 is installed in the plurality of pipes 103, so that when one of the heat exchanger module 110 or the steam exhaust pipe 104 is broken, the operation of the condenser does not need to be stopped. Maintenance and repair are possible.

The technical spirit of the present invention has been described through the above-described embodiment.

It will be apparent to those skilled in the art that various modifications or variations can be made to the embodiments described above from the description of the invention.

In addition, even if not explicitly shown or described, those skilled in the art to which the present invention pertains various modifications, including the technical idea according to the present invention from the description of the present invention. Is obvious and still belongs to the scope of the present invention.

The above embodiments described with reference to the accompanying drawings are described for the purpose of illustrating the present invention, and the scope of the present invention is not limited to these embodiments.

100: avenger
101: frame
102: cooling fan
103: plural tube
104: steam exhaust pipe
105: blocking plate
106: connector
110: heat exchanger module
111: heat exchanger tube
112: pin
113: heat pipe
114: steam flow path
115: pin
120: heat pipe
121: evaporation unit
122: pin
123: condensation unit
124: pin
125: housing
126: Wick
127: vapor space

Claims (7)

A steam exhaust pipe 104 into which steam is introduced from a turbine, a heat exchanger module 110 connected to the steam exhaust pipe 104 to cool the steam to generate a plurality, and a plurality of heat generated from the heat exchanger module 110. In the draft type condenser comprising a plurality of pipes (103) for collecting and discharging, and a cooling fan (102) installed on the heat exchanger module (110) to cool the heat exchanger module (110),
A plurality of heat exchanger module 110 to which the steam exhaust pipe 104 is fastened is installed in a plurality of pipes (103),
Each of the steam exhaust pipes 104 such that the evaporator 121 of the heat pipe 120 having the fin 122 protruding from the housing 125 is inclined upward by a predetermined angle toward the condensation part 123 of the heat pipe 120. Located inside of
Fins 124 protrude from the outer surface of the housing 125 and communicate with the evaporator 121 while the condensation part 123 of the heat pipe 120 positioned outside the steam exhaust pipe 104 is bent to form a cooling fan. By being inclined upward at a predetermined angle at the lower position of 102,
Draft type condenser using a heat pipe inserted into the steam exhaust pipe, characterized in that the heat pipe 120 is configured to cool the steam flowing in the steam exhaust pipe (104).
delete delete delete delete delete The method of claim 1,
The heat exchanger module 110,
A heat exchange pipe 111 connected to the steam exhaust pipe 104 and connected to the plurality of pipes 103 through the cooling fins 112 having a plate shape stacked at predetermined intervals;
Comprising a plurality of fins 115 and the steam flow path 114 between the fins 115 is inserted into the heat exchange tube 111 is composed of a heat transfer tube 113 in close contact with the inner surface of the heat exchange tube 111, A draft type condenser using a heat pipe inserted into a steam exhaust pipe, characterized in that the heat exchange area is widened by the heat transfer pipe 113.

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