WO2011053184A1 - Chaîne pour barrière à chaîne d'un four rotatif - Google Patents

Chaîne pour barrière à chaîne d'un four rotatif Download PDF

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Publication number
WO2011053184A1
WO2011053184A1 PCT/RU2010/000112 RU2010000112W WO2011053184A1 WO 2011053184 A1 WO2011053184 A1 WO 2011053184A1 RU 2010000112 W RU2010000112 W RU 2010000112W WO 2011053184 A1 WO2011053184 A1 WO 2011053184A1
Authority
WO
WIPO (PCT)
Prior art keywords
chain
reduction
link
rotary
heat
Prior art date
Application number
PCT/RU2010/000112
Other languages
English (en)
Russian (ru)
Inventor
Александр Сергеевич ЗУБАЧЕВ
Виктор Евгеньевич СЕРЕБРЯКОВ
Сергей Борисович ЖИРЕНКО
Original Assignee
Zubachev Aleksandr Sergeevich
Serebryakov Viktor Evgen Evich
Zhirenko Sergei Borisovich
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zubachev Aleksandr Sergeevich, Serebryakov Viktor Evgen Evich, Zhirenko Sergei Borisovich filed Critical Zubachev Aleksandr Sergeevich
Publication of WO2011053184A1 publication Critical patent/WO2011053184A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/12—Hauling- or hoisting-chains so called ornamental chains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/14—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge
    • F27B7/18—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being movable within the drum

Definitions

  • the invention relates to heat exchange devices, in particular, to chain curtains for rotary kilns of the building materials industry.
  • each link along the perimeter at the junctions of its side surfaces with the outer end surface is made with opposite and opposite faces with an inclination at an angle of 40-50 ° in the projection of the cross section of the link on the plane, and the inner end surface is curved.
  • the technical result of the invention is achieved by the fact that in a chain for a chain curtain of a rotary kiln, consisting of interconnected links of any geometric shape, where the inner end surface of each link is made curved ⁇ ; according to the invention, the outer cross-sectional surface of each link is made with ribbing. and the inner surface of the cross section of each link is made with a radius equal to half the chain pitch, or the radius of the curved part of the chain pitch.
  • the fins are made in the form of ribs bounded by two parabolas, the number of ribs can be any.
  • each chain link with fins allows you to increase the heat transfer surface and intensify the heat transfer from the gas stream to the material, since the thermal resistance of heat transfer due to fins of the external surface decreases in proportion to the finning coefficient (the ratio of the finned surface to the smooth surface to its finning).
  • the number of edges can be any. Since the most advantageous shape of the rib (calculations by E. Schmidt; Mikheev MA, Mikheeva IM Fundamentals of heat transfer. M69, 2nd ed., Stereotype. - M .: Energy, 1977, p. 307) is edge, limited by two parabolas, then in the link of the claimed chain runs an edge close to this form.
  • each link of the chain with fins allows you to reduce the metal consumption of the chain, which reduces the cost of the chain, especially chains of expensive heat-resistant steels.
  • the chain having a reduced mass, being in the material, destroys less of it, abrades, and accordingly the amount of dust carried out by the gas stream from the furnace decreases, which leads to a decrease in heat loss from the fuel.
  • the weight of the suspended chains is approximately 75-1 10% of the weight of that part of the furnace body along the length of which they are suspended.
  • the sludge film adhering to it is easier to separate from the surface of the links, since in the relief of the film, which repeats the relief of the links, multidirectional forces of its breaking and separation from the links arise, which contributes to the quick self-cleaning of the chains in front of the decarbonization zone and preservation of the particle size distribution of the material coming from the chain zone, and does not increase the dust content of the gas stream.
  • the implementation of the inner surface of the cross section of a link with a radius equal to half the chain pitch or the radius of the curvilinear part of the chain step increases the contact surface between the chain links and, due to a decrease in the load on the inner surface of the link, reduces its wear.
  • Figure 2 - shows a fragment of a section of a chain in the embodiment with oval links
  • a chain for a chain curtain of a rotary kiln consisting of interconnected links 1, of any geometric shape, where the outer section surface of each link is made with ribbing 2, and the inner section surface of each the link is made with a radius r equal to half the chain pitch 1/2, or a radius R of the curved part of the chain pitch /.
  • the fins 2 are made in the form of ribs bounded by two parabolas, the number of ribs can be any.
  • the cross section of link 1 is made of any geometric shape.
  • the chain for the chain curtain of a rotary kiln is used as follows:
  • Chains are used as an internal heat exchanger. During the rotation of the furnace, some of the chains are in the gas stream, and the rest is immersed in the material. At the beginning of the chain zone, sludge adheres to chains in the gas stream. Chains in this part of the zone increase the contact surface of the sludge with hot gases, and as a result, heat transfer improves. When the sludge dries, it loses its plasticity and
  • chains according to the regenerative principle: the chains are heated in the gas stream and, when immersed in the material, transfer heat to it. Along with these materials, the material receives heat from gases and lining.
  • the optimal design of the circuits should ensure effective heat transfer, be resistant to high temperatures, withstand high breaking load, maintain the particle size distribution of the material and not increase the dust content of the gas stream.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

L'invention concerne des dispositifs d'échange de chaleur, notamment des barrières à chaînes pour fours rotatifs utilisés dans l'industrie des matériaux de construction. Les résultats techniques de l'invention sont les suivants: augmentation de la surface d'échange de chaleur et intensification du transfert de chaleur; réduction du poids du métal dans la chaîne, et, par conséquent, réduction du coût de celle-ci; réduction de la formation de poussières; réduction du poids de la partie rotative du four; réduction de la charge pesant sur les rouleaux, les courroies et les pignons des réducteurs et, par conséquent, réduction du poids du métal dans la structure globale du four; augmentation de la surface de contact entre les maillons de la chaîne qui entrent en contact et, par conséquent, réduction de l'usure de la surface interne du corps du maillon. Le résultat technique de l'invention est atteint grâce au fait que dans la chaîne formant une barrière à chaînes dans un four rotatif, constituée de maillons ayant n'importe quelle forme géométrique, la surface interne d'extrémité pour chaque maillon est curviligne, la surface externe de la section transversale de chaque maillon comporte des nervures, et la surface interne de la section transversale de chaque maillon présente un rayon égal à la moitié du pas de la chaîne ou au rayon de la partie curviligne de la chaîne. Les nervures se présentent comme des nervures délimitées par deux paraboles, le nombre de nervures pouvant être aléatoire.
PCT/RU2010/000112 2009-11-02 2010-03-16 Chaîne pour barrière à chaîne d'un four rotatif WO2011053184A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2009140568 2009-11-02
RU2009140568/02A RU2413106C1 (ru) 2009-11-02 2009-11-02 Цепь для цепной завесы вращающейся печи

Publications (1)

Publication Number Publication Date
WO2011053184A1 true WO2011053184A1 (fr) 2011-05-05

Family

ID=43922313

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2010/000112 WO2011053184A1 (fr) 2009-11-02 2010-03-16 Chaîne pour barrière à chaîne d'un four rotatif

Country Status (3)

Country Link
EA (1) EA201000415A1 (fr)
RU (1) RU2413106C1 (fr)
WO (1) WO2011053184A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2468269C1 (ru) * 2011-06-29 2012-11-27 Александр Сергеевич Зубачев Цепь для цепной завесы вращающейся печи
RU2561545C1 (ru) * 2014-04-01 2015-08-27 Виктор Евгеньевич Серебряков Цепь для цепной завесы обжигового агрегата

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1100831A (en) * 1964-02-27 1968-01-24 Campbell Chain Co Chain for rotary kilns
US3802831A (en) * 1973-03-26 1974-04-09 Southwestern Portland Cement C Rotary kiln chain hanger
SU1013716A1 (ru) * 1981-12-05 1983-04-23 Каменец-Подольский цементный завод Цепь дл цепной завесы вращающейс печи
RU2285217C1 (ru) * 2005-10-14 2006-10-10 Белгородский государственный технологический университет им. В.Г. Шухова (БГТУ им. В.Г. Шухова) Цепь для цепной завесы вращающейся печи (варианты)
EA010712B1 (ru) * 2008-03-31 2008-10-30 Общество С Ограниченной Ответственностью "Златоустовский Литейный Завод - Метапласт" Цепь для цепной завесы клинкерообжигательной вращающейся печи

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1100831A (en) * 1964-02-27 1968-01-24 Campbell Chain Co Chain for rotary kilns
US3802831A (en) * 1973-03-26 1974-04-09 Southwestern Portland Cement C Rotary kiln chain hanger
SU1013716A1 (ru) * 1981-12-05 1983-04-23 Каменец-Подольский цементный завод Цепь дл цепной завесы вращающейс печи
RU2285217C1 (ru) * 2005-10-14 2006-10-10 Белгородский государственный технологический университет им. В.Г. Шухова (БГТУ им. В.Г. Шухова) Цепь для цепной завесы вращающейся печи (варианты)
EA010712B1 (ru) * 2008-03-31 2008-10-30 Общество С Ограниченной Ответственностью "Златоустовский Литейный Завод - Метапласт" Цепь для цепной завесы клинкерообжигательной вращающейся печи

Also Published As

Publication number Publication date
EA201000415A1 (ru) 2011-06-30
RU2413106C1 (ru) 2011-02-27

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