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KR20000013776A - Device for promoting heat transfer of flue smoke tube boiler - Google Patents

Device for promoting heat transfer of flue smoke tube boiler Download PDF

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Publication number
KR20000013776A
KR20000013776A KR1019980032841A KR19980032841A KR20000013776A KR 20000013776 A KR20000013776 A KR 20000013776A KR 1019980032841 A KR1019980032841 A KR 1019980032841A KR 19980032841 A KR19980032841 A KR 19980032841A KR 20000013776 A KR20000013776 A KR 20000013776A
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South Korea
Prior art keywords
furnace
heat transfer
boiler
tube
forming body
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Ceased
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KR1019980032841A
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Korean (ko)
Inventor
라종래
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황한규
만도공조 주식회사
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Priority to KR1019980032841A priority Critical patent/KR20000013776A/en
Publication of KR20000013776A publication Critical patent/KR20000013776A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/0005Details for water heaters
    • F24H9/001Guiding means
    • F24H9/0026Guiding means in combustion gas channels
    • F24H9/0031Guiding means in combustion gas channels with means for changing or adapting the path of the flue gas
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10Particular pattern of flow of the heat exchange media
    • F28F2250/102Particular pattern of flow of the heat exchange media with change of flow direction

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

Abstract

본 발명은 보일러의 노통 내부에서 연소된 연소가스가 연관 내부를 통과할 때 연소가스의 경계층이 난류 상태가 되어 열전달이 촉진되도록 연관 내부에 비틀림 형상의 와류 형성체를 삽입한 구조를 갖는 노통연관식 보일러의 열전달 촉진장치에 관한 것이다. 전방에 버너(12)가 설치된 파형 노통(14)과 다수의 연관(30)이 나란하게 배치되는 본 발명의 노통연관식 보일러에서는 연관(30)의 내부에 띠 모양의 철판을 반복하여 비틀어 만든 나선형 와류 형성체(32)를 삽입한 구조를 채용하였다. 또한, 이 와류 형성체(32)에는 압력손실 저하용 관통홀(34)이 등간격으로 배치되어 있다.The present invention relates to a furnace tube type structure having a structure in which a vortex-shaped body having a torsional shape is inserted into the tube so that the boundary layer of the combustion gas becomes turbulent when heat of the combustion gas combusted in the furnace tube passes through the tube. It relates to a heat transfer promoting device of the boiler. In the furnace tube type boiler of the present invention, in which a corrugated furnace (14) provided with a burner (12) in front and a plurality of associations (30) are arranged side by side, a spiral made by twisting a strip-shaped iron plate inside the association (30) The structure which inserted the vortex forming body 32 was employ | adopted. In this vortex forming body 32, pressure loss reducing through holes 34 are arranged at equal intervals.

Description

노통연관식 보일러의 열전달 촉진장치Heat transfer facilitating device for furnace tube type boiler

본 발명은 노통연관식 보일러의 열전달 촉진장치에 관한 것으로, 보다 상세하게는, 보일러의 노통 내부에서 연소된 연소가스가 연관 내부를 통과할 때 연소가스의 경계층이 난류 상태가 되어 열전달이 촉진되도록 연관 내부에 비틀림 형상의 와류 형성체를 삽입한 구조를 갖는 노통연관식 보일러의 열전달 촉진장치에 관한 것이다.The present invention relates to a heat transfer promoting device of a furnace tube type boiler, and more particularly, the boundary layer of the combustion gas becomes turbulent to promote heat transfer when the combustion gas combusted in the boiler passes through the tube. The present invention relates to a heat transfer promoting device for a furnace-tubular boiler having a structure in which a torsional vortex forming body is inserted therein.

보일러는 본체의 재질이나 구조 및 물순환 방법 등에 따라 여러 가지로 분류된다. 이 중에서 강제(鋼製)보일러는 그 구조에 따라 원통 보일러와 수관 보일러로 나눌 수 있으며, 원통 보일러는 증발량을 증가시키기 위하여 지름이 큰 원통형 압력용기의 내부에 노통 또는 연관 등을 설치하여 전열면적을 증대시키는 보일러이다.Boilers are classified into various types according to the material, structure and water circulation method of the main body. Among these, steel boilers can be divided into cylindrical boilers and water pipe boilers according to their structure. In order to increase the evaporation rate, cylindrical boilers are provided with a furnace or tube connected inside a large-diameter cylindrical pressure vessel to improve the heat transfer area. It is a boiler to increase.

노통식 보일러는 지름이 큰 셀 내부에 그보다 작은 지름의 노통(flue)을 설치하고, 이 노통에 버너 연소장치가 배치되는 내화식 보일러이다. 연관식 보일러는 셀의 양단에 위치한 평판형 경판 사이에 지름이 작은 여러 개의 연관(fire tube)을 설치하여 연결한 구조를 갖는 것으로, 노통식 보일러에 비하여 전열면적이 커져 증발량이 많아진다. 노통연관식 보일러는 노통 보일러와 연관 보일러를 조합하여 만든 것으로, 셀 내에 지름이 큰 파형 노통 1개와 다수의 연관을 연속으로 배치한 구조를 갖는다.A furnace boiler is a refractory boiler in which a smaller diameter flue is installed inside a large diameter cell and a burner combustion device is disposed in the furnace. The associated boiler has a structure in which a plurality of small diameter fire tubes are connected between flat plate plates positioned at both ends of the cell, and the heat transfer area is larger than that of a conventional boiler to increase evaporation. The furnace tube type boiler is a combination of a furnace tube and an associated boiler, and has a structure in which a large corrugated furnace and a plurality of tubes are continuously arranged in a cell.

도 1은 이러한 노통연관식 보일러를 도시한 단면도이다. 상기한 바와 같이 노통연관식 보일러(10)는 파형 노통(14)과 다수의 연관이 나란하게 배치된 구조를 갖는 것으로서, 보일러(10)의 전방에 버너(12)가 설치되어 있다. 노통(14)내부의 연소실에서 연소된 고온의 연소가스는 화살표를 따라 연관(16)으로 유입된 다음, 다수의 연도(18, 20, 22)를 통해 수직으로 배열된 연관(16)을 통과한 후에, 화살표 방향(P)을 따라 굴뚝으로 배출된다. 보일러(10)의 상부에는 안전밸브(24)와 증기밸브(26)가 장착되어 있다.1 is a cross-sectional view showing such a furnace connected boiler. As described above, the furnace tube type boiler 10 has a structure in which a plurality of correlates are arranged in parallel with the corrugated furnace tube 14, and a burner 12 is installed in front of the boiler 10. The hot combustion gas combusted in the combustion chamber inside the furnace (14) flows into the plume (16) along an arrow and then passes through the plume (16) arranged vertically through a plurality of flues (18, 20, 22). Then, it is discharged to the chimney along the arrow direction P. The upper part of the boiler 10 is equipped with a safety valve 24 and the steam valve 26.

도 2는 종래의 나선 원관으로 이루어진 연관(16)을 도시한 단면도이다. 버너(12)에 의해 연소된 가스가 연관(16)내부를 흐르는 과정에서 관내 유체의 경계층을 난류상태로 만들어 열전달을 촉진하기 위한 방안으로, 연관의 외부를 눌러서 관내부에 나선형 돌기(16a)를 갖도록 구성하였다. 이 밖에도, 연관 내부에 배플 가스를 공급하거나 철선을 나선형으로 감은 스프링을 삽입하여 난류를 유도하는 방안도 개시되어 있다.2 is a cross-sectional view showing a tube 16 made of a conventional spiral tube. In order to promote heat transfer by making the boundary layer of the fluid in the tube turbulent while the gas burned by the burner 12 flows inside the tube 16, the spiral protrusion 16a is pushed inside the tube by pressing the outside of the tube. It was configured to have. In addition, a method of inducing turbulence by supplying a baffle gas or inserting a spirally wound spring into the tube is disclosed.

이와 같이, 연관 내부에 와류를 형성하기 위한 종래의 구조들은 제작비가 상승하게 되는 원인이 되며, 스프링이나 배플 가스의 삽입시에 관내 연소가스의 마찰저항의 증가로 인해 압력소실이 증가됨으로써 보일러 운전에 필요한 동력비가 증대되는 문제가 있다. 특히, 도 2에 도시한 나선 원관을 적용하는 경우에는 원관의 가공시에 내부 및 외부에 가공결함의 하나인 스크래치가 종종 발생하게 된다.As such, the conventional structures for forming the vortex inside the tube cause the manufacturing cost to rise, and the pressure loss is increased due to the increase in the frictional resistance of the combustion gas in the tube when the spring or the baffle gas is inserted. There is a problem that the required power cost is increased. In particular, in the case of applying the spiral tube shown in FIG. 2, scratches, which are one of processing defects, are often generated inside and outside during the processing of the tube.

스크래치가 생기게 되면, 연소가스나 리튬브로마이드 용액과 장기간 접촉되어 국부적인 부식이 발생됨으로써 구멍이 생길 우려가 있으며, 이때, 생긴 구멍을 통해서 유체의 누출이 발생되어 운전 불능 상태를 초래하는 경우도 있다.If scratches occur, there is a risk of localized corrosion caused by long-term contact with the combustion gas or lithium bromide solution, and a hole may be generated. In this case, fluid leakage may occur through the formed holes, resulting in an inoperable state.

이와 같은 문제점을 해결하기 위해 안출한 본 발명은 제작이 용이하고 제조비용이 적게 드는 와류 형성체를 연관 내부에 설치하여 과도한 압력손실을 막을 수 있으며 국부적인 부식을 방지할 수 있는 노통연관식 보일러의 열전달 촉진장치를 제공하는데 그 목적이 있다.The present invention devised to solve such a problem is to install a vortex forming body that is easy to manufacture and low manufacturing cost in the tube to prevent excessive pressure loss and to prevent local corrosion of the furnace tube type boiler The purpose is to provide a heat transfer promoting device.

도 1은 일반적인 노통연관식 보일러의 구성을 보인 단면도,1 is a cross-sectional view showing the configuration of a typical furnace tube boiler,

도 2는 종래의 연관을 도시한 단면도,2 is a cross-sectional view showing a conventional association,

도 3은 본 발명의 연관을 도시한 정면도,3 is a front view showing the association of the present invention,

도 4 및 도 5는 각각, 본 발명에 다른 와류 형성체의 구성을 보인 정면도 및 평면도.4 and 5 are a front view and a plan view showing a configuration of another vortex forming body according to the present invention, respectively.

♣도면의 주요부분에 대한 부호의 설명♣♣ Explanation of symbols for main part of drawing ♣

10:보일러 12:버너10: boiler 12: burner

14:노통 30:연관14: No pain 30: Association

32:와류 형성체 34:관통홀32: Vortex forming body 34: Through hole

상술한 본 발명의 목적은 전방에 버너가 설치된 파형 노통과 다수의 연관이 나란하게 배치되는 노통연관식 보일러에 있어서, 연관내부에는 띠 모양의 철판이 반복하여 비틀린 나선형 와류 형성체가 삽입되어 있는 것을 특징으로 하는 노통연관식 보일러의 열전달 촉진장치에 의해 달성된다.An object of the present invention as described above is in a furnace tube type boiler in which a plurality of associations are arranged side by side with a corrugated furnace in which a burner is installed in the front, and a spiral vortex forming body in which a strip-shaped iron plate is repeatedly twisted is inserted in the association. It is achieved by a heat transfer promoting device of a furnace tube type boiler.

이하, 첨부한 도 3 내지 도 5를 참조하여 본 발명의 바람직한 실시예에 따른 노통연관식 보일러의 열전달 촉진장치에 대하여 상세히 설명하기로 하며, 도 1에서 설명한 종래의 구조와 동일한 부품은 동일한 부호로 표시한다.Hereinafter, with reference to the accompanying Figures 3 to 5 will be described in detail with respect to the heat transfer promoting device of the furnace tube type boiler according to a preferred embodiment of the present invention, the same parts as the conventional structure described in Figure 1 with the same reference numerals. Display.

도 3은 본 발명의 연관을 도시한 정면도이고, 도 4 및 도 5는 각각, 본 발명에 다른 와류 형성체의 구성을 보인 정면도 및 평면도이다.Fig. 3 is a front view showing the association of the present invention, and Figs. 4 and 5 are a front view and a plan view showing the configuration of another vortex forming body according to the present invention, respectively.

도 1에서 설명한 바와 같이, 노통연관식 보일러(10)의 전방에는 연소용 버너(12)가 설치되어 있으며, 내부에는 파형 노통(14)과 함께 다수의 연관(30)이 배치되어 있다.As described with reference to FIG. 1, a burner 12 for combustion is provided in front of the furnace tube type boiler 10, and a plurality of associations 30 are disposed inside the corrugated furnace 14.

이러한 노통연관식 보일러에 있어서, 본 발명의 바람직한 실시예에서는 연소가스가 연관 내부를 흐르는 과정에서 관내 유체의 경계층을 난류상태로 만들어 열전달을 촉진하기 위한 방안으로, 와류 형성체(32)를 가상선으로 도시한 연관(30)내부에 설치하였다.In such a furnace-tubular boiler, in the preferred embodiment of the present invention, in order to promote heat transfer by making the boundary layer of the fluid in the tube turbulent in the course of the combustion gas flowing through the associated interior, the vortex forming body 32 is a virtual line. It was installed inside the association 30 shown.

이 와류 형성체(32)는 띠 모양의 철판을 여러번 비틀어 나선형으로 만든 것으로서, 등간격으로 반복하여 비틀어 놓은 형상을 지닌다. 와류 형성체(32)의 제작시에는 별도의 가공장치를 사용하지 않고 나선형으로 비틀어 놓으면 되므로 용이하게 만들 수 있으며, 드릴 등을 이용하여 간단하게 관통홀(34)을 형성할 수 있다. 또한, 와류 형성체(32)에는 다수의 관통홀(34)이 소정의 간격을 두고 배치되어 있어, 연관(30)내부의 과다한 압력손실을 막게 된다.The vortex forming body 32 is made of a spiral by twisting a strip-shaped iron plate several times, and has a shape that is repeatedly twisted at equal intervals. When manufacturing the vortex forming body 32 can be easily made by twisting in a spiral without using a separate processing device, it is possible to simply form a through hole 34 using a drill or the like. In addition, a plurality of through holes 34 are disposed at predetermined intervals in the vortex forming body 32 to prevent excessive pressure loss inside the tube 30.

지금까지 설명한 본 발명의 바람직한 실시예에서는 등간격의 관통홀을 지닌 와류 형성체를 예시하였으나, 본 기술분야에 통상의 지식을 가진 자라면, 그 밖의 다른 변형도 실시할 수 있음을 이해할 수 있을 것이다. 가령, 와류 형성체의 비틀림부에 1개 이상의 관통홀을 형성할 수도 있으며, 2개의 비틀림부 마다 1개씩의 관통홀을 형성하는 것도 가능하다. 또한, 와류 형성체의 비틀림 정도는 보일러의 용량에 따라 각기 다른 모양으로 구성할 수도 있다.In the preferred embodiment of the present invention described above, the vortex forming body having equally spaced through holes is illustrated, but it will be understood by those skilled in the art that other modifications may be made. . For example, one or more through holes may be formed in the torsion part of the vortex forming body, and one through hole may be formed for every two torsion parts. In addition, the degree of twist of the vortex forming body may be configured in different shapes depending on the capacity of the boiler.

이상으로 설명한 본 발명에 의하면, 연관 내부에 와류 형성체를 삽입함으로써 제조비용을 절감할 수 있으며, 와류 형성체에 형성된 다수의 관통홀에 의해서 연관 내부의 과도한 압력손실을 막을 수 있다. 또한, 가공시에 스크래치와 같은 결함이 발생되지 않기 때문에 국부적인 부식에 의한 구멍의 생성을 막아 운전 정지현상을 방지할 수 있는 이점이 있다.According to the present invention described above, the manufacturing cost can be reduced by inserting the vortex forming body in the tube, and the excessive pressure loss in the tube can be prevented by the plurality of through holes formed in the vortex forming body. In addition, since a defect such as a scratch does not occur during processing, there is an advantage that it is possible to prevent the occurrence of driving stop by preventing the generation of holes due to local corrosion.

Claims (2)

전방에 버너(12)가 설치된 파형 노통(14)과 다수의 연관(30)이 나란하게 배치되는 노통연관식 보일러에 있어서,In the furnace tube type boiler in which the corrugated furnace barrel 14 in which the burner 12 is installed in front and the plurality of associations 30 are arranged side by side, 상기 연관(30)내부에는 띠 모양의 철판이 반복하여 비틀린 나선형 와류 형성체(32)가 삽입되어 있는 것을 특징으로 하는 노통연관식 보일러의 열전달 촉진장치.The tube (30) inside the heat transfer promoting device of the furnace tube type boiler, characterized in that the spiral vortex forming body (32) is repeatedly inserted twisted strip-shaped iron plate. 제 1항에 있어서,The method of claim 1, 상기 상기 와류 형성체(32)에는 다수의 관통홀(34)이 소정의 간격을 두고 배치되어 있는 것을 특징으로 하는 노통연관식 보일러의 열전달 촉진장치.The vortex forming body (32) has a plurality of through-holes 34 are arranged at predetermined intervals heat transfer promoting device of the furnace tube type boiler characterized in that the arrangement.
KR1019980032841A 1998-08-13 1998-08-13 Device for promoting heat transfer of flue smoke tube boiler Ceased KR20000013776A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100392594B1 (en) * 2000-06-28 2003-07-23 주식회사 경동보일러 Condensing Gas Boiler
KR101301366B1 (en) * 2013-04-26 2013-08-29 박은수 Flow-through boiler
CN106524492A (en) * 2016-09-27 2017-03-22 杭州帕沃节能设备有限公司 Fire-tube boiler main fire tube heat exchange efficiency improving device and mounting method thereof
KR101995576B1 (en) 2018-12-31 2019-07-03 대림로얄이앤피(주) Tube structure for improving thermal efficiency
KR102036744B1 (en) * 2018-05-24 2019-10-25 대구대학교 산학협력단 Pellet boiler having improved combustion efficiency

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100392594B1 (en) * 2000-06-28 2003-07-23 주식회사 경동보일러 Condensing Gas Boiler
KR101301366B1 (en) * 2013-04-26 2013-08-29 박은수 Flow-through boiler
CN106524492A (en) * 2016-09-27 2017-03-22 杭州帕沃节能设备有限公司 Fire-tube boiler main fire tube heat exchange efficiency improving device and mounting method thereof
CN106524492B (en) * 2016-09-27 2022-04-19 杭州帕沃节能设备有限公司 Heat exchange efficiency improving device for main fire tube of fire tube boiler and mounting method thereof
KR102036744B1 (en) * 2018-05-24 2019-10-25 대구대학교 산학협력단 Pellet boiler having improved combustion efficiency
KR101995576B1 (en) 2018-12-31 2019-07-03 대림로얄이앤피(주) Tube structure for improving thermal efficiency

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