KR101793134B1 - Heat exchanger of molten salt - Google Patents

Heat exchanger of molten salt Download PDF

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Publication number
KR101793134B1
KR101793134B1 KR1020160013948A KR20160013948A KR101793134B1 KR 101793134 B1 KR101793134 B1 KR 101793134B1 KR 1020160013948 A KR1020160013948 A KR 1020160013948A KR 20160013948 A KR20160013948 A KR 20160013948A KR 101793134 B1 KR101793134 B1 KR 101793134B1
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KR
South Korea
Prior art keywords
molten salt
flow path
unit
passage
molten
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KR1020160013948A
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Korean (ko)
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KR20170092811A (en
Inventor
윤석호
송찬호
최준석
김동호
김영
이공훈
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한국기계연구원
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G13/00—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00
    • F28G13/005—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00 cleaning by increasing the temperature of heat exchange surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G6/00—Devices for producing mechanical power from solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
    • F24D11/003—Central heating systems using heat accumulated in storage masses water heating system combined with solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0015—Domestic hot-water supply systems using solar energy
    • F24J2/42—
    • F25B41/003—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G3/00—Rotary appliances
    • F28G3/16—Rotary appliances using jets of fluid for removing debris
    • F28G3/163—Rotary appliances using jets of fluid for removing debris from internal surfaces of heat exchange conduits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The present invention relates to a molten salt heat exchanger capable of effectively preventing clogging of a pipe by melting molten salt when the pipe in which the molten salt has solidified is clogged without interfering with the performance of the heat exchanger.
To this end, the molten salt heat exchanger is provided with a molten salt flow path for forming a path of the molten salt and a molten salt flow path for exchanging heat with the molten salt flow path in accordance with the contact of the molten salt flow path, Or a molten salt conversion unit for heating the molten salt flow path and a flow path drive unit for rotating the molten salt flow path in a relative motion with respect to the molten salt conversion unit corresponding to the solidified state of the molten salt, The contact between the operation channel and the heater unit included in the molten salt conversion unit is only brought into contact with each other.

Figure R1020160013948

Description

{HEAT EXCHANGER OF MOLTEN SALT}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molten salt heat exchanger, and more particularly, to a molten salt heat exchanger capable of effectively dissolving a molten salt when a pipe in which a molten salt is solidified is clogged without interfering with the performance of a heat exchanger, Heat exchanger.

Due to the depletion of chemical energy such as coal and petroleum and environmental pollution problems caused by the use of chemical energy, interest and efforts are emerging recently in the development of alternative energy. Therefore, it is required to develop a technology for solar power generation using solar energy, which is one of alternative energy sources.

A common solar power system is a system that collects and collects solar energy and converts the collected heat energy into electrical energy. Such solar power generation systems include concentrators, cold tanks, hot tanks and steam turbines, and the like.

Then, when the solar power generation system stores the solar heat, the molten salt in the low temperature tank absorbs heat while passing through the concentrator, and the molten salt having the increased temperature is stored in the high temperature tank and stored.

On the other hand, when the solar heat is radiated, the molten salt stored in the high-temperature tank is heat-exchanged with the heat transfer medium circulating on the steam turbine side, and the molten salt having lowered temperature is stored again in the low temperature tank. Water, which is a heat transfer medium circulating the steam turbine, can receive heat from the hot molten salt to produce steam, and can operate by operating a steam turbine.

However, in the conventional solar power generation system, when the molten salt stored in the high-temperature tank is heat-exchanged with the heat transfer medium circulating on the steam turbine side, if the molten salt solidifies in the heat exchanger, the flow of the molten salt is limited and the system operation becomes impossible.

For this purpose, a separate heating device may be provided in the heat exchanger, but this heating device heats both the molten salt and the piping of the heat exchanger through which the heat transfer medium passes, which may interfere with the heat exchange performance between the molten salt and the heat transfer medium.

Particularly, in a state where a normal heat exchange operation is performed, since the pipe through which the molten salt passes must be in contact with a non-operated heating device, the heat of the molten salt heated according to the conduction characteristic is transferred to the heater, . Further, when the molten salt is melted according to the solidification of the molten salt, the heat of the heating device is transferred to the heat transfer medium according to the conduction characteristics, and the efficiency of melting the molten salt in which the heat of the heating device is solidified is lowered.

Korean Registered Patent No. 10-1452412 (title of the invention: Solar power generation system using a single high-temperature molten salt heat storage tank, Announced on October 10, 2014)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems of the prior art, and it is an object of the present invention to provide a molten salt capable of effectively dissolving a molten salt when the pipe in which the molten salt is solidified is clogged without interfering with the performance of the heat exchanger, And a heat exchanger.

According to a preferred embodiment of the present invention, a molten salt heat exchanger according to the present invention is a molten salt heat exchanger for exchanging heat between a molten salt and a working fluid. The molten salt heat exchanger includes a molten salt- ; A molten salt conversion unit that performs heat exchange with the molten salt flow path in accordance with the contact of the molten salt flow path in a state where the molten salt flow path is rotatably inserted into a part of the conversion space showing a circular section and heats the molten salt flow path; And a flow path drive unit for rotating the molten salt flow path in a relative motion with respect to the molten salt conversion unit corresponding to a solidified state of the molten salt, wherein the molten salt conversion unit is provided in a form to surround the conversion space An operating oil which is heat-exchanged with the molten salt flow path while forming a movement path of the working fluid; A heater unit provided to surround the switching space in a state of being symmetrical with respect to an axis orthogonal to the longitudinal direction of the operating flow path, the heating unit being adapted to heat the molten salt flow path; And a heat insulating portion for insulating between the operating passage and the heater unit along a circumferential direction of the switching space, wherein the molten salt flow passage is formed by the passage passage of either one of the operating passage and the heater unit Only one is contacted.

Here, the molten salt passage is provided with an arc portion that is equal to or smaller than a semicircle on one side of an axis orthogonal to the longitudinal direction of the operation passage with respect to the center of the switching space, and the arc portion includes: And is contacted only to one of the operation passage and the heater unit.

Here, the molten salt channel is radially arranged with two or more arc portions spaced from each other with respect to the center of the switching space, and the operating channel and the heater unit are arranged in correspondence with two or more of the arc portions And the arc portion is brought into contact with only one of the operating passage and the heater unit according to the operation of the passage-driving unit.

A molten salt heat exchanger according to the present invention is a molten salt heat exchanger for allowing heat exchange between a molten salt and a working fluid, the molten salt heat exchanger comprising: a molten salt producing a path of the molten salt; A molten salt conversion unit for performing heat exchange with the molten salt flow path in accordance with the contact of the molten salt flow path in a state where the molten salt flow path is rotatably inserted into a part of the conversion space showing a ring-shaped cross section or heating the molten salt flow path; And a flow path drive unit for rotating the molten salt flow path in a relative motion with respect to the molten salt conversion unit corresponding to a solidified state of the molten salt, wherein the molten salt conversion unit has a ring-shaped cross section, An external switching unit surrounding the periphery; And an internal switching unit provided in a center region of the switching space, wherein the external switching unit and the internal switching unit are respectively provided in a form of enclosing the switching space, An operating oil that exchanges heat with the molten salt flow channel while forming a moving path of the molten salt; A heater unit provided to surround the switching space in a state of being symmetrical with respect to an axis orthogonal to the longitudinal direction of the operating flow path, the heating unit being adapted to heat the molten salt flow path; And a heat insulating portion for insulating between the operating passage and the heater unit along a circumferential direction of the switching space, wherein the molten salt flow passage is formed by the passage passage of either one of the operating passage and the heater unit Only one is contacted.

Here, in the switching space, the molten salt flow path having an arc-shaped cross section equal to or smaller than that of the semicircle is provided on one side of an axis orthogonal to the longitudinal direction of the operation flow path with respect to the center of the internal switching unit, The flow path is in contact with only one of the operation flow path and the heater unit according to the operation of the flow path drive unit.

Here, in the switching space, two or more of the molten salt flow paths having arcuate cross-sections are spaced apart from each other with respect to the center of the internal switching unit, and the operating flow path and the heater unit have arcuate cross sections Wherein the molten salt flow path of the arc-shaped cross-section is disposed in the molten salt flow path of the molten salt flow path, Lt; / RTI >

Here, the switching space is provided with a support bracket fixed to the outer circumferential surface of the molten salt flow channel except a portion contacting the molten salt conversion unit.

Here, the molten salt flow channel may include a division pipe portion contacting the molten salt conversion unit in the conversion space; And a connection pipe portion connecting the circulation line through which the molten salt is circulated and the division tube portion.

A molten salt heat exchanger according to the present invention is a molten salt heat exchanger for allowing heat exchange between a molten salt and a working fluid, the molten salt heat exchanger comprising: a molten salt producing a path of the molten salt; A molten salt conversion unit that performs heat exchange with the molten salt flow path in accordance with the contact of the molten salt flow path in a state where the molten salt flow path is inserted in a part of the conversion space so as to be reciprocally movable and heats the molten salt flow path; And a flow path drive unit reciprocating the molten salt flow path in the switching space in a relative motion with respect to the molten salt conversion unit corresponding to a solidified state of the molten salt, An operating oil which surrounds one side and is heat exchanged with the molten salt flow path while forming a path of the working fluid; A heater unit provided to surround the other side of the switching space and to heat the molten salt flow path; And a heat insulating portion for insulating the operating passage from the heater unit along a circumferential direction of the switching space, wherein the molten salt flow passage is formed by a flow passage Only one is contacted.

Here, the switching space shows an elliptical cross section, and the molten salt flow path is rotated by the flow path drive unit in a state of being in contact with the working oil side or the heater unit side while showing a circular cross section.

Here, the switching spaces are arranged so that two or more are spaced apart from each other.

Here, the switching space represents any one of a rectangular cross section, a square cross section, and an elliptic cross section.

The molten salt heat exchanger according to the present invention may further include a condition sensing unit for sensing at least one of the temperature of the molten salt, the flow rate of the molten salt, and the pressure of the molten salt in the molten salt channel; And a solidification control unit for controlling the flow path drive unit according to the operation of the condition sensing unit.

According to the molten salt heat exchanger of the present invention, when the pipe in which the solidification of the molten salt is formed is clogged without interfering with the performance of the heat exchanger, the molten salt can be melted and the clogging of the pipe can be efficiently solved.

Further, the present invention can completely separate the heat exchange state with the molten salt flow channel and the heating state of the molten salt flow channel through the modularized molten salt conversion unit, thereby preventing the heat loss according to the conduction characteristics.

Further, the present invention can restrict the contact position of the molten salt flow path and clearly distinguish the operation state of the heat exchanger by rotating or reciprocating the molten salt passage in the relative motion with respect to the molten salt conversion unit.

Further, the present invention can smoothly heat the molten salt contained in the molten salt channel, and prevent heat loss of the molten salt channel in heat exchange with the molten salt channel or heating of the molten salt channel.

Further, the present invention can increase the contact area between the molten salt flow channel and the molten salt conversion unit, and stabilize the contact state between the molten salt flow channel and the molten salt conversion unit according to the relative rotation or reciprocation of the molten salt flow channel.

Further, the present invention can improve the heat exchange performance between the molten salt passage and the working oil, and smooth the flow of the molten salt in the molten salt passage.

Further, the present invention can clearly determine the state of the molten salt in the molten salt channel, clarify the operation of the channel drive unit, and prevent malfunction of the heat exchanger.

Further, the present invention can stabilize the contact state between the molten salt flow channel and the molten salt conversion unit, and maximize the conduction characteristic.

Further, the present invention can uniformly heat the molten salt in the molten salt flow path and shorten the heating time of the molten salt.

Further, the present invention can increase the heat exchange performance through a plurality of molten salt flow paths, and can suppress the solidification of the molten salt in the heat exchanger.

1 is a view showing a heat exchange cycle using a molten salt according to an embodiment of the present invention.
2 is a front view showing a molten salt heat exchanger according to a first embodiment of the present invention.
3 is a longitudinal sectional view showing a molten salt heat exchanger according to a first embodiment of the present invention.
4 is a longitudinal sectional view showing an operation state of the molten salt heat exchanger according to the first embodiment of the present invention.
5 is a longitudinal sectional view showing a modified example of the molten salt heat exchanger according to the first embodiment of the present invention.
6 is a longitudinal sectional view showing a molten salt heat exchanger according to a second embodiment of the present invention.
7 is a longitudinal sectional view showing an operation state of a molten salt heat exchanger according to a second embodiment of the present invention.
8 is a longitudinal sectional view showing a modified example of the molten salt heat exchanger according to the second embodiment of the present invention.
9 is a longitudinal sectional view showing a molten salt heat exchanger according to a third embodiment of the present invention.
10 is a longitudinal sectional view showing an operation state of a molten salt heat exchanger according to a third embodiment of the present invention.
11 is a longitudinal sectional view showing a first modification of the molten salt heat exchanger according to the third embodiment of the present invention.
12 is a longitudinal sectional view showing a second modification of the molten salt heat exchanger according to the third embodiment of the present invention.

Hereinafter, an embodiment of a molten salt heat exchanger according to the present invention will be described with reference to the accompanying drawings. Here, the present invention is not limited or limited by the examples. Further, in describing the present invention, a detailed description of well-known functions or constructions may be omitted for clarity of the present invention.

1 is a view showing a heat exchange cycle using a molten salt according to an embodiment of the present invention.

1, a heat exchange cycle using a molten salt according to an embodiment of the present invention includes a heat collection unit 10, a heat storage unit 20, a heat exchange unit 30, a heat dissipation unit 40, Line 11 and may include an operating unit 50, a condensing unit 60, and an operating line 12.

The heat collecting unit (10) heats the circulating fluid by a heat source. The heat collecting unit 10 may have a hollow plate shape or a hollow tube shape so that the circulating fluid circulates therein. Although the heat source can use a separate electric energy, it is described that solar heat is used in an embodiment of the present invention.

Here, the circulating fluid is in a liquid state and can maintain a liquid state at a temperature higher than a maximum temperature that can be heated by a heat source. For example, the circulating fluid may be a molten salt.

The heat storage unit (20) stores the circulating fluid heated in the heat collecting unit (10). The heat storage unit (20) is connected to the heat collection unit (10) through a circulation line (11).

The heat exchange unit (30) stores the circulating fluid stored in the heat storage unit (20). The heat exchange unit (30) is connected to the heat storage unit (20) through a circulation line (11). In the heat exchange unit 30, heat exchange is performed between the circulating fluid and a working fluid for operating the operation unit 50 described later.

The heat exchange unit 30 will be described in more detail through the molten salt heat exchanger according to each embodiment of the present invention.

The circulation fluid passing through the heat exchange unit (30) is stored in the heat dissipation unit (40). The heat dissipating unit 40 is connected to the heat exchanging unit 30 through the circulation line 11 and is connected to the heat collecting unit 10. The heat dissipation unit 40 may be provided between the heat exchange unit 30 and the heat collecting unit 10 to form a buffer space for the circulating fluid to be supplied to the heat collecting unit 10.

The circulation line 11 forms a circulation path of the circulating fluid and is configured to circulate the heat collecting unit 10, the heat accumulating unit 20, the heat exchanging unit 30 and the heat dissipating unit 40 sequentially .

The operation unit (50) is operated by the working fluid heated in the heat exchange unit (30). The operation unit (50) is connected to the heat exchange unit (30) through an operation line (20). Here, the working fluid may be water.

For example, the operation unit 50 is constituted by a turbine for power generation and is operated by the heated working fluid. At this time, the working fluid is liquid at normal temperature, is vaporized as it passes through the heat exchange unit 30, and is supplied to the operation unit 50 in a gaseous state to operate the operation unit 50.

As another example, the operation unit 50 may be constituted by a heating pipe for heating and may be heated by the working fluid heated. As another example, the operation unit 50 may include a hot water supply unit for hot water to supply hot water by the working fluid.

The condensing unit (60) stores the working fluid through the operation unit (50). The condensing unit (60) can condense the stored working fluid to improve heat exchange performance in the heat exchange unit (30). The condensing unit 60 is connected to the operation unit 50 via the operation line 12 and to the heat exchange unit 30. [

The operation line 12 forms a circulation path of the working fluid and sequentially connects the heat exchange unit 30, the operation unit 50, and the condensation unit 60.

Hereinafter, the molten salt heat exchanger according to the first embodiment of the present invention will be described.

FIG. 2 is a front view showing a molten salt heat exchanger according to a first embodiment of the present invention, FIG. 3 is a longitudinal sectional view showing a molten salt heat exchanger according to the first embodiment of the present invention, FIG. 5 is a longitudinal sectional view showing a modified example of the molten salt heat exchanger according to the first embodiment of the present invention. FIG. 5 is a longitudinal sectional view showing an operation state of a molten salt heat exchanger according to an embodiment of the present invention.

2 to 5, the molten salt heat exchanger according to the first embodiment of the present invention allows heat exchange between the molten salt as the circulating fluid and the working fluid, and includes a molten salt channel 100, 200), and a molten salt conversion unit (400).

The molten salt furnace 100 forms a path of movement of the molten salt.

The flow path drive unit 200 rotates the molten phosphate pathway 100 in a relative motion with respect to the molten salt conversion unit 400 in response to the solidified state of the molten salt. For example, the flow path drive unit 200 may rotate the molten salt conversion unit 100 in a state where the molten salt conversion unit 400 is fixed. As another example, the flow path drive unit 200 may rotate the molten salt conversion unit 400 in a state where the molten phosphate channel 100 is fixed. As another example, the flow path drive unit 200 may rotate both the molten salt passageway 100 and the molten salt conversion unit 400.

The flow path drive unit 200 may be provided in at least one of the molten phosphate channel 100 and the molten salt conversion unit 400 through various forms.

In the first embodiment of the present invention, the flow path drive unit 200 may be provided on one side of the molten iron path 100 to rotate the molten iron path 100. At this time, an autonomous conversion guide 210 may be provided on the other side of the molten iron furnace 100 to rotatably support the molten iron furnace 100. Although not shown, the flow path drive unit 200 may be provided at both ends of the molten iron furnace 100, respectively.

In the molten salt conversion unit 400, a conversion space 404 having a circular cross-section at the center is formed through or recessed. In the part of the switching space 404, the molten refinery furnace 100 is rotatably inserted. Then, the molten salt conversion unit 400 may be heat-exchanged with the molten salt combustion furnace 100 according to the contact of the molten salt combustion furnace 100. In addition, the molten salt conversion unit 400 may heat the molten salt combustion furnace 100 according to the contact of the molten salt combustion furnace 100.

Here, the molten salt conversion unit 400 may be modularized to rotatably support the molten phosphate furnace 100. In the first embodiment of the present invention, the molten salt conversion unit 400 has a ring-shaped cross-section, and the molten salt refinery 100 may be inserted into the center thereof. The molten salt conversion unit 400 may include an operating oil path 401, a heater unit 402, and a thermal insulation unit 403. [

The operating oil path 401 surrounds the switching space 404. The working oil path 401 exchanges heat with the molten phosphorous oil path 100 while forming a movement path of the working fluid. The operating oil path 401 is connected to the operating line 12. [

The heater unit 402 is provided to surround the switching space 404. The heater unit 402 is symmetrical with the operating oil path 401 about an axis orthogonal to the longitudinal direction of the operating oil path 401 (the longitudinal direction of the molten iron path 100).

The heat insulating portion 403 insulates the operating oil path 401 and the heater unit 402 along the circumferential direction of the switching space 404.

Then, the molten phosphate furnace 100 is rotated in a state of being inserted into the switching space 404 according to the operation of the flow path driving unit 200, and is supplied to either the working oil path 401 or the heater unit 402 .

3 or 4, the molten phosphorous oil path 100 is formed in the longitudinal direction of the operating oil path 401 with respect to the center of the switching space 404 as a first embodiment of the present invention, (The lengthwise direction of the molten salt passageway 100) may be provided on one side of the axis orthogonal to the direction of the axis of rotation of the molten salt passageway 100.

At this time, the arc portion is brought into contact with only one of the operating oil path 401 and the heater unit 402 according to the operation of the flow path driving unit 200. The remaining portion of the molten salt passageway (100) excluding the arc portion is exposed on the switching space (404). For example, the molten salt furnace 100 may exhibit a semicircular cross section.

As shown in FIG. 5, in a modified example of the first embodiment of the present invention, two or more arc portions are spaced apart from each other with respect to the center of the switching space 404, As shown in FIG. The operating oil passages 401 are disposed at equal intervals along the circumferential direction of the switching space 404 by being provided at two or more corresponding to at least two of the arc portions. In addition, the heater unit 402 is provided at two or more corresponding to at least two of the arc portions, and is disposed at regular intervals along the circumferential direction of the switching space 404. At this time, the working oil path 401 and the heater unit 402 are alternately arranged along the circumferential direction of the switching space 404.

At this time, the arc portion is brought into contact with only one of the operating oil path 401 and the heater unit 402 according to the operation of the flow path driving unit 200. The remaining portion of the molten salt passageway (100) excluding the arc portion is exposed on the switching space (404).

The support bracket 104 may be provided in the switching space 404 corresponding to the shape of the molten iron furnace 100. The support bracket 104 is coupled to the outer circumferential surface of the molten salt refinery 100 except for the portion contacting the molten salt conversion unit 400. The outer circumferential surface of the molten iron path 100 excluding the portion contacting with the molten salt conversion unit 400 may be a portion exposed in the switching space 404 except for the arc portion in the molten iron path 100 .

The support bracket 104 may maintain the shape of the molten iron furnace 100 to prevent the molten iron furnace 100 from being deformed or damaged. The support bracket 104 is provided with a heat insulation function by wrapping a portion exposed on the switching space 404 in the molten iron furnace 100 so that the heat of the molten iron furnace 100 or the molten salt It is possible to prevent it from being diverted to the outside.

In the structure of the molten phosphate furnace 100, the molten phosphate furnace 100 includes a divided pipe portion 101 contacting the molten salt converting unit 400 in the switching space 404, And a connecting tube portion 103 connecting the circulation line 11 and the divided tube portion 101 to each other. The molten metal furnace 100 further includes an adjusting pipe portion 102 connecting the connecting pipe portion 103 with the divided pipe portion 101. The adjustment tube 102 may extend in diameter from the splitter tube 101 toward the connection tube 103.

The molten salt heat exchanger according to the first embodiment of the present invention may further include a condition sensing unit and a solidification control unit 300.

The condition sensing unit detects at least one of the temperature of the molten salt, the flow rate of the molten salt, and the pressure of the molten salt in the molten salt furnace 100.

The condition sensing unit may include a temperature sensing unit 301 sensing the temperature of the molten salt in the molten phosphate furnace 100, a flow rate sensing unit 302 sensing the flow rate of the molten salt in the molten phosphate furnace 100, And a pressure sensing unit 303 for sensing the pressure of the molten salt in the molten salt refining furnace 100.

The condition sensing unit is provided at the entrance side of the molten iron furnace 100 in the drawing, but the present invention is not limited thereto. The condition sensing unit may be disposed at various positions to detect the solidification state of the molten salt in the molten iron furnace 100 .

The solidification control unit 300 controls the flow path drive unit 200 according to the operation of the condition sensing unit. The solidification control unit 300 controls the operation of the flow path drive unit 200 according to the solidification state of the molten salt sensed through the condition sensing unit so that the molten salt passages 100 are connected to the hydraulic oil path 401, The heater unit 402 is brought into contact with only one of them.

First, the temperature sensing unit 301 is installed at the inlet side or the outlet side of the molten-annealed furnace 100 to sense the temperature of the molten salt in the furnace 100, and the solidification control unit 300 And controls the operation of the flow path drive unit 200 by comparing the temperature sensed by the temperature sensing unit 301 with a predetermined temperature. For example, when the temperature sensed by the temperature sensing unit 301 is lower than a predetermined temperature, the solidification control unit 300 recognizes the solidified state of the molten salt, and the solidification control unit 300 recognizes that the molten- The flow path drive unit 200 is operated so as to be in contact with the flow path drive unit 402.

When the temperature sensed by the temperature sensing unit 301 is equal to or higher than a predetermined temperature, the solidification control unit 300 controls the heater unit 402 in a state where the molten- The operation of the heater unit 402 can be stopped or the heating condition of the heater unit 402 can be maintained. When the heat exchange operation is performed in a state where the molten salt is melted, the solidification control unit 300 operates the flow path drive unit 200 so that the molten phosphate channel 100 is in contact with the working oil path 401 .

Second, the flow rate sensing unit 302 is installed at the inlet side or the outlet side of the molten phosphate channel 100 to sense the flow rate of the molten salt in the molten phosphate channel 100, and the solidification control unit 300 And controls the operation of the flow path drive unit 200 by comparing the flow rate sensed by the flow rate sensing unit 302 with a predetermined flow rate. For example, when the flow rate sensed by the flow rate sensing unit 302 is lower than a preset flow rate, the solidification control unit 300 recognizes the solidification state of the molten salt, and the solidification control unit 300 recognizes that the molten- The flow path drive unit 200 is operated so as to be in contact with the flow path drive unit 402.

When the flow rate sensed by the flow rate sensing unit 302 is equal to or greater than a predetermined flow rate, the solidification control unit 300, in a state where the molten salt channel 100 is in contact with the heater unit 402, The operation of the heater unit 402 can be stopped or the heating condition of the heater unit 402 can be maintained. When the heat exchange operation is performed in a state where the molten salt is melted, the solidification control unit 300 operates the flow path drive unit 200 so that the molten phosphate channel 100 is in contact with the working oil path 401 .

Third, the pressure sensing unit 303 is installed at the inlet side of the molten phosphate channel 100 to sense the pressure of the molten salt in the molten phosphate channel 100, and the solidification control unit 300 senses the pressure And controls the operation of the flow path drive unit 200 by comparing the pressure sensed by the pressure sensor 303 with a predetermined pressure. For example, when the pressure sensed by the pressure sensing unit 303 is higher than a preset pressure, the solidification control unit 300 recognizes the solidified state of the molten salt, and the solidification control unit 300 recognizes that the molten- The flow path drive unit 200 is operated so as to be in contact with the flow path drive unit 402.

When the pressure sensed by the pressure sensing unit 303 is equal to or lower than a predetermined pressure, the solidification control unit 300, in a state in which the molten salt passageway 100 is in contact with the heater unit 402, The operation of the heater unit 402 can be stopped or the heating condition of the heater unit 402 can be maintained. When the heat exchange operation is performed in a state where the molten salt is melted, the solidification control unit 300 operates the flow path drive unit 200 so that the molten phosphate channel 100 is in contact with the working oil path 401 .

Fourth, the pressure sensing unit 303 is installed at the outlet side of the molten-annealed furnace 100 to sense the pressure of the molten salt in the molten-annealed furnace 100, and the solidification control unit 300 senses the pressure And controls the operation of the flow path drive unit 200 by comparing the pressure sensed by the pressure sensor 303 with a predetermined pressure. For example, when the pressure sensed by the pressure sensing unit 303 is lower than a predetermined pressure, the solidification control unit 300 recognizes the solidified state of the molten salt, and the solidification control unit 300 recognizes that the molten- The flow path drive unit 200 is operated so as to be in contact with the flow path drive unit 402.

When the pressure sensed by the pressure sensing unit 303 is a preset pressure, the solidification control unit 300 may be operated so that the solidification control unit 300 is in contact with the heater unit 402, The operation of the heater unit 402 can be stopped or the heating condition of the heater unit 402 can be maintained. When the heat exchange operation is performed in a state where the molten salt is melted, the solidification control unit 300 operates the flow path drive unit 200 so that the molten phosphate channel 100 is in contact with the working oil path 401 .

The operation of the molten salt heat exchanger according to the first embodiment of the present invention will now be described. When the normal heat exchange operation is performed, as shown in FIG. 3 or 5, the arc portion formed in the molten- The heat exchange is performed between the molten salt of the molten refined oil furnace 100 and the working fluid of the working fluid 401 by contacting the operating oil furnace 401.

In addition, when the heat exchange operation is stopped or the solidification of the molten salt in the molten salt channel 100 is sensed by the condition sensing unit, the channel drive unit 200 is operated as shown in FIG. 4, The arc portion formed in the oil path 100 contacts the heater unit 402 so that the heater unit 402 heats the molten salt path 100 or the molten salt to melt the solidified molten salt .

Hereinafter, a molten salt heat exchanger according to a second embodiment of the present invention will be described. In the molten salt heat exchanger according to the second embodiment of the present invention, the same components as those of the molten salt heat exchanger according to the first embodiment of the present invention are denoted by the same reference numerals, and a description thereof will be omitted.

FIG. 6 is a longitudinal sectional view showing a molten salt heat exchanger according to a second embodiment of the present invention, FIG. 7 is a longitudinal sectional view showing an operation state of the molten salt heat exchanger according to the second embodiment of the present invention, Is a longitudinal sectional view showing a modified example of the molten salt heat exchanger according to the second embodiment of the present invention.

6 to 8, the molten salt heat exchanger according to the second embodiment of the present invention allows heat exchange between the molten salt as the circulating fluid and the working fluid, and includes a molten salt channel 100, 200, and a molten salt conversion unit 400, and may further include the condition sensing unit and the solidification control unit 300.

The molten salt furnace 100 forms a path of movement of the molten salt.

The flow path drive unit 200 rotates the molten phosphate pathway 100 in a relative motion with respect to the molten salt conversion unit 400 in response to the solidified state of the molten salt. For example, the flow path drive unit 200 may rotate the molten salt conversion unit 100 in a state where the molten salt conversion unit 400 is fixed. As another example, the flow path drive unit 200 may rotate the molten salt conversion unit 400 in a state where the molten phosphate channel 100 is fixed. As another example, the flow path drive unit 200 may rotate both the molten salt passageway 100 and the molten salt conversion unit 400.

The flow path drive unit 200 may be provided in at least one of the molten phosphate channel 100 and the molten salt conversion unit 400 through various forms.

In the molten salt conversion unit 400, a conversion space 404 showing a ring-shaped cross section is formed through or recessed. In the part of the switching space 404, the molten refinery furnace 100 is rotatably inserted. Then, the molten salt conversion unit 400 may be heat-exchanged with the molten salt combustion furnace 100 according to the contact of the molten salt combustion furnace 100. In addition, the molten salt conversion unit 400 may heat the molten salt combustion furnace 100 according to the contact of the molten salt combustion furnace 100.

Here, the molten salt conversion unit 400 may be modularized to rotatably support the molten phosphate furnace 100. In the second embodiment of the present invention, the molten salt conversion unit 400 is divided into an external conversion unit 410 and an internal conversion unit 420 by a conversion space 404 showing a ring-shaped cross section. The external switching unit 410 has a ring-shaped cross section and surrounds the switching space 404. The internal switching unit 420 has a circular cross section and is provided in the central region of the switching space 404. At this time, the molten phosphate furnace 100 is in contact with both the external switching unit 410 and the internal switching unit 420 while being inserted into the switching space 404.

The external switching unit 410 and the internal switching unit 420 may include an operating oil passage 401, a heater unit 402 and a heat insulating unit 403, respectively. At this time, the detailed configuration of the external switching unit 410 and the detailed configuration of the internal switching unit 420 are 1: 1 correspondence in a radial manner. In the internal switching unit 420, the heat insulating unit 403 passes through the center of the internal switching unit 420 to maximize the heat insulating effect between the operating oil path 401 and the heater unit 402 .

The operating oil path 401 surrounds the switching space 404. The working oil path 401 exchanges heat with the molten phosphorous oil path 100 while forming a movement path of the working fluid. The operating oil path 401 is connected to the operating line 12. [

The heater unit 402 is provided to surround the switching space 404. The heater unit 402 is symmetrical with the operating oil path 401 about an axis orthogonal to the longitudinal direction of the operating oil path 401 (the longitudinal direction of the molten iron path 100).

The heat insulating portion 403 insulates the operating oil path 401 and the heater unit 402 along the circumferential direction of the switching space 404.

Then, the molten phosphate furnace 100 is rotated in a state of being inserted into the switching space 404 according to the operation of the flow path driving unit 200, and is supplied to either the working oil path 401 or the heater unit 402 .

6 or 7, the switching space 404 is formed in the longitudinal direction of the hydraulic oil passage 401 with respect to the center of the internal switching unit 420 as a second embodiment of the present invention, (100) having an arc-shaped cross section equal to or smaller than that of a semicircle at one side of an axis orthogonal to the longitudinal axis (the longitudinal direction of the molten kiln passage (100)). The inner circumferential direction of the inner circumferential switching unit 420 is parallel to the longitudinal direction of the inner circumferential direction of the inner circumferential direction of the inner circumferential direction of the inner circumferential direction of the inner circumferential direction. In the longitudinal direction). The molten phosphorous oil path 100 may be provided with a call portion which is in contact with the external switching unit 410 and the internal switching unit 420, respectively.

At this time, the molten salt passages 100 of the arcuate section are in contact with only one of the hydraulic oil path 401 and the heater unit 402 according to the operation of the flow path drive unit 200. The remaining portion of the molten salt passageway (100) excluding the arc portion is exposed on the switching space (404).

8, in the switching space 404, two or more of the above-described molten-in-reflux condensers having an arc-shaped cross section with respect to the center of the internal switching unit 420 may be provided as a modified example of the second embodiment of the present invention, And rods 100 are radially disposed with mutual spacing. The molten phosphorous oxy-fuel rods 100 each have an arc-shaped cross section with two or more spaced apart from each other, and are spaced apart at equal intervals along the circumferential direction of the internal switching unit 420. The molten phosphorous oil path 100 may be provided with a call portion which is in contact with the external switching unit 410 and the internal switching unit 420, respectively.

The operating oil passages 401 are disposed at equal intervals along the circumferential direction of the switching space 404, so that the operating oil passages 401 are provided in two or more corresponding to the molten passageways 100 having arc-shaped cross-sections. In addition, the heater units 402 are disposed at equal intervals along the circumferential direction of the switching space 404, at least two corresponding to the molten iron furnace 100 having arc-shaped cross-sections. At this time, the working oil path 401 and the heater unit 402 are alternately arranged along the circumferential direction of the switching space 404.

At this time, the molten salt passages 100 of the arcuate section are in contact with only one of the hydraulic oil path 401 and the heater unit 402 according to the operation of the flow path drive unit 200. The remaining portion of the molten salt passageway (100) excluding the arc portion is exposed on the switching space (404).

Hereinafter, a molten salt heat exchanger according to a third embodiment of the present invention will be described. In the molten salt heat exchanger according to the third embodiment of the present invention, the same reference numerals are given to the same components as those of the molten salt heat exchanger according to the first or second embodiment of the present invention, do.

FIG. 9 is a longitudinal sectional view showing a molten salt heat exchanger according to a third embodiment of the present invention, FIG. 10 is a longitudinal sectional view showing an operation state of the molten salt heat exchanger according to the third embodiment of the present invention, Is a longitudinal sectional view showing a first modified example of the molten salt heat exchanger according to the third embodiment of the present invention, and FIG. 12 shows a second modified example of the molten salt heat exchanger according to the third embodiment of the present invention FIG.

9 to 12, the molten salt heat exchanger according to the third embodiment of the present invention allows heat exchange between the molten salt as the circulating fluid and the working fluid, and includes a molten salt channel 100, 200, and a molten salt conversion unit 400, and may further include the condition sensing unit and the solidification control unit 300.

The molten salt furnace 100 forms a path of movement of the molten salt.

The flow path drive unit 200 reciprocally moves the molten salt passageway 100 in a switching space 404 which will be described later with respect to the molten salt conversion unit 400 in response to the solidified state of the molten salt. For example, the flow path drive unit 200 can reciprocate the molten salt passageway 100 in a state where the molten salt conversion unit 400 is fixed. As another example, the flow path drive unit 200 may reciprocate the molten salt conversion unit 400 in a state where the molten phosphate channel 100 is fixed. As another example, the flow path drive unit 200 can reciprocate both the molten salt passageway 100 and the molten salt conversion unit 400.

The flow path drive unit 200 may be provided in at least one of the molten phosphate channel 100 and the molten salt conversion unit 400 through various forms.

In the third embodiment of the present invention, the flow path drive unit 200 may be provided on one side or both sides of the molten kiln 100 to reciprocate the molten kiln 100.

In the molten salt conversion unit 400, a conversion space 404 is formed at the center thereof. In the part of the switching space 404, the molten refinery furnace 100 is inserted in a reciprocating manner. Then, the molten salt conversion unit 400 may be heat-exchanged with the molten salt combustion furnace 100 according to the contact of the molten salt combustion furnace 100. In addition, the molten salt conversion unit 400 may heat the molten salt combustion furnace 100 according to the contact of the molten salt combustion furnace 100.

Here, the molten salt conversion unit 400 may be modularized to support the molten salt refinery 100 in a reciprocating manner. The molten salt conversion unit 400 may include an operating oil path 401, a heater unit 402, and a thermal insulation unit 403. [

The operating oil path 401 is provided to surround one side of the switching space 404. The working oil path 401 exchanges heat with the molten phosphorous oil path 100 while forming a movement path of the working fluid. The operating oil path 401 is connected to the operating line 12. [

The heater unit 402 is provided so as to surround the other side of the switching space 404. The heater unit 402 is symmetrical with the operating oil path 401 about an axis orthogonal to the longitudinal direction of the operating oil path 401 (the longitudinal direction of the molten iron path 100).

The heat insulating portion 403 insulates the operating oil path 401 and the heater unit 402 along the circumferential direction of the switching space 404.

Then, the molten phosphate furnace 100 is rotated in a state of being inserted into the switching space 404 according to the operation of the flow path driving unit 200, and is supplied to either the working oil path 401 or the heater unit 402 .

More specifically, as a third embodiment of the present invention, as shown in FIG. 9 or 10, the switching space 404 also shows an elliptical cross section. At this time, the molten oil furnace 100 has a circular cross section. In addition, the operating oil path 401 and the heater unit 402 divide the long axis of the switching space 404 into two. The operating oil path 401 and the heater unit 402 may be mutually symmetric about a short axis of the switching space 404. The length of the switching space 404 in the major axis direction is 1.5 times larger than the diameter of the molten kiln 100. When the length of the switching space 404 in the longitudinal direction is smaller than 1.5 times the diameter of the molten kiln 100, when the molten kiln furnace 100 is brought into contact with the working oil path 401 side, A part of the oil path 100 may be exposed to the heater unit 402 side. On the contrary, when the molten iron furnace furnace 100 contacts the heater unit 402, a part of the molten iron furnace furnace 100 may be exposed to the working oil furnace 401 side.

As a modification of the third embodiment of the present invention, as shown in FIG. 11 or 12, the switching space 404 shows a rectangular cross-section. At this time, the molten iron furnace 100 may have a square cross section. In addition, the operating oil path 401 and the heater unit 402 divide the long side of the switching space 404 into two. In addition, the working oil path 401 and the heater unit 402 may be mutually axisymmetric with respect to the center of the long side of the switching space 404. The length of the long side of the switching space 404 is two times longer than the length of the long side of the molten kiln 100.

As such, the transition space 404 may represent a rectangular cross section or a square cross section. As a result, the molten salt passages 100 can exhibit a square cross section or a rectangular cross section.

In addition, as shown in FIG. 11 or 12, the switching spaces 404 may be arranged so that two or more of the switching spaces 404 are spaced apart from each other, thereby expanding the number of the molten iron furnace 100.

According to the above-mentioned molten salt heat exchanger, when the pipe in which the solidified molten salt of the molten salt is clogged without interfering with the performance of the heat exchanger is melted, the molten salt can be effectively melted to solve the clogging phenomenon of the molten- . Further, the heat exchange state with the molten salt combustion furnace 100 and the heating state of the molten salt combustion furnace 100 are thoroughly divided through the modularized molten salt conversion unit 400 to prevent heat loss according to the conduction characteristics . Further, the relative movement of the molten salt conversion unit 400 may be used to rotate or reciprocate the molten phosphorous flux path 100, restrict the contact position of the molten phosphorous flux path 100, clarify the operation state of the heat exchanger 100 .

It is also possible to heat the molten salt contained in the furnace 100 and to heat the furnace 100 by heat exchange with the furnace 100 or heating the furnace 100, Loss can be prevented. The contact area between the molten salt refinery 100 and the molten salt conversion unit 400 is increased and the molten salt reflux ratio of the molten salt reflux unit 100 and the molten salt reflux unit 400 is increased according to the relative rotation or reciprocation of the molten refinery furnace 100, The contact state between the molten salt conversion unit 400 can be stabilized. In addition, the heat exchange performance between the molten salt channel 100 and the working oil channel 401 can be improved, and the flow of the molten salt in the molten salt channel 100 can be smoothly performed.

Further, it is possible to clearly determine the state of the molten salt in the molten phosphate furnace 100, clarify the operation of the flow path drive unit 200, and prevent malfunction of the heat exchanger. In addition, the contact state between the molten salt passages 100 and the molten salt conversion unit 400 can be stabilized, and the conduction characteristics can be maximized. Also, the molten salt can be uniformly heated in the molten salt furnace 100, and the heating time of the molten salt can be shortened. In addition, the heat exchange performance can be increased through the plurality of the molten salt refiner 100, and the solidification of the molten salt in the heat exchanger can be suppressed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Modify or modify the Software.

10: Collecting unit 20: Heat storage unit 30: Heat exchange unit
40: heat dissipating unit 50: operation unit 60: condensing unit
11: circulation line 12: operating line
100: molten salt furnace 101: split pipe portion 102: regulating pipe portion
103: connecting pipe portion 104: support bracket 200:
210: autonomous drive unit 300: solidification control unit 301: temperature sensing unit
302: flow rate sensing unit 303: pressure sensing unit 400: molten salt conversion unit
410: external conversion unit 420: internal conversion unit 401:
402: heater unit 403: heat insulating portion 404:

Claims (14)

A molten salt heat exchanger for heat exchange between a molten salt and a working fluid,
A molten salt producing a flow path of the molten salt;
A molten salt conversion unit that performs heat exchange with the molten salt flow path in accordance with the contact of the molten salt flow path in a state where the molten salt flow path is rotatably inserted into a part of the conversion space showing a circular section and heats the molten salt flow path; And
And a flow path drive unit for rotating the molten salt flow path in a relative motion with respect to the molten salt conversion unit corresponding to the solidified state of the molten salt,
Wherein the molten salt conversion unit comprises:
An operating oil which surrounds the switching space and is heat-exchanged with the molten salt flow channel while forming a moving path of the working fluid;
A heater unit provided to surround the switching space in a state of being symmetrical with respect to an axis orthogonal to the longitudinal direction of the operating flow path, the heating unit being adapted to heat the molten salt flow path; And
And a heat insulating portion for insulating the operating passage from the heater unit along the circumferential direction of the switching space,
Wherein the molten salt flow path is in contact with only one of the operation passage and the heater unit according to an operation of the flow path drive unit. The method according to claim 1,
In the molten salt flow path,
Wherein an arc portion equal to or smaller than a semicircle is provided on one side of an axis orthogonal to a longitudinal direction of the operating passage with respect to a center of the switching space,
The arc portion may be,
Wherein the flow passage is in contact with only one of the operation passage and the heater unit according to an operation of the flow passage drive unit. The method according to claim 1,
In the molten salt flow path,
Wherein two or more arc portions are radially arranged in a state where the arc portions are spaced apart from each other with respect to a center of the conversion space,
Wherein the operating passage and the heater unit
At least two corresponding to the at least two arc portions are alternately arranged along the circumferential direction of the switching space,
The arc portion may be,
Wherein the flow passage is in contact with only one of the operation passage and the heater unit according to an operation of the flow passage drive unit. A molten salt heat exchanger for heat exchange between a molten salt and a working fluid,
A molten salt producing a flow path of the molten salt;
A molten salt conversion unit for performing heat exchange with the molten salt flow path in accordance with the contact of the molten salt flow path in a state where the molten salt flow path is rotatably inserted into a part of the conversion space showing a ring-shaped cross section or heating the molten salt flow path; And
And a flow path drive unit for rotating the molten salt flow path in a relative motion with respect to the molten salt conversion unit corresponding to the solidified state of the molten salt,
Wherein the molten salt conversion unit comprises:
An external switching unit that shows a ring-shaped cross section and surrounds the circumference of the switching space; And
And an internal switching unit which is provided in a central region of the switching space,
The external switching unit, and the internal switching unit,
An operating oil which surrounds the switching space and is heat-exchanged with the molten salt flow channel while forming a moving path of the working fluid;
A heater unit provided to surround the switching space in a state of being symmetrical with respect to an axis orthogonal to the longitudinal direction of the operating flow path, the heating unit being adapted to heat the molten salt flow path; And
And a heat insulating portion for insulating the operating passage from the heater unit along the circumferential direction of the switching space,
Wherein the molten salt flow path is in contact with only one of the operation passage and the heater unit according to an operation of the flow path drive unit. 5. The method of claim 4,
In the switching space,
Wherein the molten salt passage having an arcuate cross section equal to or smaller than a semicircle is provided on one side of an axis orthogonal to the longitudinal direction of the operating passage with respect to the center of the internal switching unit,
The molten salt flow path of the arc-
Wherein the flow passage is in contact with only one of the operation passage and the heater unit according to an operation of the flow passage drive unit. 5. The method of claim 4,
In the switching space,
Wherein at least two of said molten salt flow passages having arc-shaped cross sections with respect to the center of said internal diversion unit are radially arranged in a state of being spaced apart from each other,
Wherein the operating passage and the heater unit
Two or more molten salt flow paths having arc-shaped cross sections are alternately arranged along the circumferential direction of the switching space,
The molten salt flow path of the arc-
Wherein the flow passage is in contact with only one of the operation passage and the heater unit according to an operation of the flow passage drive unit. 7. The method according to any one of claims 1 to 6,
In the switching space,
And a support bracket fixed to an outer circumferential surface of the molten salt flow channel except a portion contacting the molten salt conversion unit. 7. The method according to any one of claims 1 to 6,
The molten salt flow channel
A division tube portion contacting the molten salt conversion unit in the conversion space; And
And a connecting pipe portion connecting the circulation line through which the molten salt is circulated and the divided pipe portion. 7. The method according to any one of claims 1 to 6,
A condition sensing unit sensing at least one of a temperature of the molten salt in the molten salt passage, a flow rate of the molten salt, and a pressure of the molten salt; And
And a solidification control unit for controlling the flow path drive unit according to the operation of the condition sensing unit. A molten salt heat exchanger for heat exchange between a molten salt and a working fluid,
A molten salt producing a flow path of the molten salt;
A molten salt conversion unit that performs heat exchange with the molten salt flow path in accordance with the contact of the molten salt flow path in a state where the molten salt flow path is inserted in a part of the conversion space so as to be reciprocally movable and heats the molten salt flow path; And
And a flow path drive unit reciprocating the molten salt flow path in the switching space in a relative motion with respect to the molten salt conversion unit corresponding to the solidified state of the molten salt,
Wherein the molten salt conversion unit comprises:
A working oil which surrounds one side of the switching space and is heat exchanged with the molten salt flow path while forming a moving path of the working fluid;
A heater unit provided to surround the other side of the switching space and to heat the molten salt flow path; And
And a heat insulating portion for insulating the operating passage and the heater unit along a circumferential direction of the switching space,
Wherein the molten salt flow path is in contact with only one of the operation passage and the heater unit according to an operation of the flow path drive unit. 11. The method of claim 10,
Wherein the conversion space represents an elliptical cross section,
The molten salt flow channel
Is rotated by the flow path drive unit while being in contact with the side of the operating oil path or the side of the heater unit while showing a circular cross section. 11. The method of claim 10,
Characterized in that the conversion spaces are arranged such that two or more are spaced apart from each other. 11. The method of claim 10,
Wherein the switching space represents a cross section of any one of a rectangular cross section, a square cross section and an elliptic cross section. 14. The method according to any one of claims 10 to 13,
A condition sensing unit sensing at least one of a temperature of the molten salt in the molten salt passage, a flow rate of the molten salt, and a pressure of the molten salt; And
And a solidification control unit for controlling the flow path drive unit according to the operation of the condition sensing unit.
KR1020160013948A 2016-02-04 2016-02-04 Heat exchanger of molten salt KR101793134B1 (en)

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KR101239773B1 (en) 2012-10-17 2013-03-06 한국지질자원연구원 Geothermal power generation system and method using heat exchange of working gas and molten salt
KR101240395B1 (en) 2012-10-17 2013-03-11 한국지질자원연구원 Geothermal power generation system and method using heat exchange of working fiuid and molten salt
KR101452412B1 (en) 2013-10-22 2014-10-23 한국에너지기술연구원 Solar thermal power generation system using single hot molten salt tank

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
KR101239773B1 (en) 2012-10-17 2013-03-06 한국지질자원연구원 Geothermal power generation system and method using heat exchange of working gas and molten salt
KR101240395B1 (en) 2012-10-17 2013-03-11 한국지질자원연구원 Geothermal power generation system and method using heat exchange of working fiuid and molten salt
KR101452412B1 (en) 2013-10-22 2014-10-23 한국에너지기술연구원 Solar thermal power generation system using single hot molten salt tank

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