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61. 发明专利

JPH10169969A METHOD AND APPARATUS FOR CONTROLLING COMBUSTION OF REGENERATIVE BURNER HEATING FURNACE 失效
公开(公告)号：JPH10169969A
公开(公告)日：1998-06-26
申请号：JP32311796
申请日：1996-12-03
申请人： NIPPON KOKAN KK
发明人： MORI ISAO , SUZUKAWA YUTAKA
IPC分类号： F23D14/00 , F23L15/02 , F27D17/00
摘要： PROBLEM TO BE SOLVED: To hold an exhaust gas shutoff valve and exhaust gas suction blower of a downstream at heat resistant temperature or lower by regulating a suction and exhaust gas flow rates, and setting exhaust gas temperature of thermal storage unit outlet side based on suction and exhaust gas flow rates calculated by a specific calculation formula using combustion air flow rate, respective type exhaust gas temperatures and thermal storage unit passing area as factors. SOLUTION: An opening of exhaust gas flow control valve is controlled, a factor for deciding an exhaust gas temperature of a thermal storage output side is extracted, exhaust gas flow rate is predicted with the following formula as a model, actual exhaust gas flow rate is corrected, and the suction and exhaust gas flow rates are obtained. Qg=a1 ×Qa ×A ×(Tg1-Ta1)/(Tg1-Tg2)-a4 ×Qa, where Qg: suction and exhaust gas flow rate (Nm /Hr), Qa: combustion air flow rate (Nm /Hr), Ta1: combustion air temperature( deg.C) before preheating, Tg1: furnace temperature or exhaust gas temperature( deg.C) of thermal storage unit input side. Tg2: exhaust gas temperature( deg.C) of thermal storage unit output side. A: thermal storage unit passing area (m ).

62. 发明专利

JPH1019244A DRAIN EXHAUST DEVICE, ALTERNATING COMBUSTION FURNACE HAVING DRAIN EXHAUST DEVICE AND DRAIN EXHAUST METHOD FOR ALTERNATING COMBUSTION FURNACE 失效
公开(公告)号：JPH1019244A
公开(公告)日：1998-01-23
申请号：JP16796496
申请日：1996-06-27
申请人： NIPPON KOKAN KK
发明人： SUZUKAWA YUTAKA , MORI ISAO , TAKAHASHI JUN
IPC分类号： F23D14/66 , C21D1/52 , F23L15/02 , F27B9/10 , F27B9/30
摘要： PROBLEM TO BE SOLVED: To provide a drain exhaust device, an alternating combustion furnace having the drain exhaust device and a drain exhaust method for the alternating combustion furnace capable of effectively exhausting drain generated in a flue for combustion exhaust gas upon alternating combustion of the alternating combustion furnace. SOLUTION: An alternating combustion furnace is provided with a drain exhaust device for removing drain generated by combustion exhaust gas in a combustion exhaust gas discharge pipeline system by providing the drain exhaust device 9 having exhaust gas collecting headers 7 and 8 respectively provided with U shaped pipelines 6 in the combustion exhaust gas discharge pipeline system for an the alternating combustion furnace composed of a heating furnace 1 provided with regenerative burners 2 and 3. Thus, the impeller of an exhaust fan 4 is not corroded by drain entering the combustion exhaust gas.

63. 发明专利

JPH09112882A REGENERATIVE COMBUSTION BURNER 失效
公开(公告)号：JPH09112882A
公开(公告)日：1997-05-02
申请号：JP26563595
申请日：1995-10-13
申请人： NIPPON KOKAN KK
发明人： SUZUKAWA YUTAKA , MORI ISAO
IPC分类号： F23D14/66 , F23L15/02
摘要： PROBLEM TO BE SOLVED: To repair a burner without interrupting the operation of a heating furnace by providing a closing means for preventing the entry of combustion exhaust gas at a position nearer to a furnace main body than to a position where a regenerative member is installed in the gas passage of a regenerative combustion burner SOLUTION: A closing means 1 comprising a cover 2 made of a fire resistant material for closing a gas passage 23 and a guide bar 3 made of a heat resistant metal material for moving the cover 2 forward and backward is arranged to close a gas passage 23 at a horizontal position near the combustion air burst out part of the gas passage 23 so that a burner can be repaired even during the operation of a furnace 22 at the time of failure of a regenerative member 24. When the abnormality of the regenerative member 24 is generated, gas in the furnace is prevented from entering the gas passage 23 by the closing means 1 and a regenerative member changing cover 5 is removed so that the regenerative heat energy of the regenerative member 24 is diffused. Then, when the repair of the regenerative member 24 is completed, the member 24 is immediately covered with the regenerative member changing cover 5, and the guide bar 3 is pulled out so that the regenerative member 24 is reset so as to be operated in a regenerative combustion burner 21.

64. 发明专利

JPH09101022A OPERATING METHOD OF HEAT STORAGE TYPE BURNER FURNACE 失效
公开(公告)号：JPH09101022A
公开(公告)日：1997-04-15
申请号：JP25745595
申请日：1995-10-04
申请人： NIPPON KOKAN KK
发明人： SUZUKAWA YUTAKA , MORI ISAO
IPC分类号： F23N5/24 , F23L15/02
摘要： PROBLEM TO BE SOLVED: To suppress the generation of drain during operation and continue stable operation by a method wherein the time of elapse when drain eliminating set temperature has been attained has elapsed a preset burner switching time, the combustion of the burner is switched to exhaust immediately. SOLUTION: The aging of combustion waste gas temperature at the discharging side of heat storage bodies 23a, 23b from the start-up time of a heat storage type burner furnace is obtained. Then, a temperature signal, measured by a thermometer 1a or a thermometer 1b, is sent into a temperature difference operator 3, in which a drain eliminating set temperature is preset. On the other hand, the time signal of a timer 2a or a timer 2b is sent into a time difference operator 14, in which a burner switching time is preset. Then, the values of the temperature difference and the time difference are sent into a burner switching deciding device 5. On the other hand, when the time of elapse when a temperature has arrived at the drain eliminating set temperature has passed the preset burner switching time, the discharging of exhaust gas is stopped immediately and operation is switched into combustion.

65. 发明专利

JPH0920918A HEATING FURNACE EQUIPPING HEAT REGERATIVE TYPE ALTERNATING COMBUSTION BURNER SYSTEM AND METHOD FOR CONTROLLING EXHAUST GAS THEREOF 失效
公开(公告)号：JPH0920918A
公开(公告)日：1997-01-21
申请号：JP16647995
申请日：1995-06-30
申请人： NIPPON KOKAN KK
发明人： ISHIGUCHI YUKIO , HASHIZUME KOJI , SUZUKAWA YUTAKA
IPC分类号： F23N5/00 , C21D1/52 , C21D9/00 , C21D11/00 , F23L15/02 , F27B9/02 , F27B9/36 , F27B9/40 , F27D17/00
摘要： PURPOSE: To facilitate temp. control in each unit furnace and to improve thermal efficiency of a heating furnace by controlling flow rate of escaped exhaust gas, in the heating furnace providing plural heat regenerative type alternating combustion burner system unit furnaces. CONSTITUTION: At the time of heating a steel slab, etc., in the heating furnace 36 providing plural unit furnaces 37 having four pieces of the heat generative type alternating combustion burners 41a-41d to each, fuel and air are fed into two burners 41b, 41c in four burners and burnt and the exhaust gas already used to the heating is fed from the burners 41a, 41d during stopping to a heat storage chamber, and the heat is accumulated by heat exchange. Successively, the burners 41b, 41c are stopped and the fuel and the air preheated through the heat storage chamber are supplied into the burners 41a, 41d and burnt and the heat contained in this exhaust gas is accumulated in each heat storage chamber. In the heating system alternately repeating this method, the temp. in each unit furnace is controlled in a high accuracy by suitably controlling the flow rate of the escaped exhaust gas which does not pass through the heat storage chamber, and the pressure in the unit furnace 37 with a controller 40, and also, the thermal efficiency of the heating furnace is improved.

66. 发明专利

JP2541032B2 失效
公开(公告)号：JP2541032B2
公开(公告)日：1996-10-09
申请号：JP14386391
申请日：1991-05-20
申请人： NIPPON KOKAN KK
发明人： SUZUKAWA YUTAKA , SUGYAMA SHUNICHI , FUJIBAYASHI TERUO
IPC分类号： B65H20/10 , C23C2/00 , C23C2/40

67. 发明专利

JPH07268579A CONTINUOUS HOT DIP COATING METHOD AND DEVICE THEREFOR 失效
公开(公告)号：JPH07268579A
公开(公告)日：1995-10-17
申请号：JP6077694
申请日：1994-03-30
申请人： NIPPON KOKAN KK
发明人： SUZUKAWA YUTAKA , KOBAYASHI KOJI , OKADA KUNIAKI
IPC分类号： C23C2/00 , C23C2/40
摘要： PURPOSE:To improve plating quality by disposing a bucket for sucking and recovering dross in a plating bath tank and cleaning and returning a plating soln. CONSTITUTION:This hot dip coating device 1 has the bucket 12 for recovering the dross from a plating bath liquid 4 contg. the dross 3 and a return piping 30 for returning the purified plating bath liquid 4 within a plating tank 2 housing the plating bath liquid 4 and a sink roll 6 for transporting a band-shaped metallic material. The bucket 12 is disposed freely ejectably. A ceramic fiber filter 13 in a cloth form bent to multiple layers and a gas lift pump 20 for sucking the plating bath liquid 4 contg. the dross 3 and purifying and returning the liquid by passing the liquid through the filter 13 are mounted within the bucket. A return piping 30 from the gas lift pump 20 is branched to two directions. One thereof is opened near the band-shaped metallic material introducing part in the upper part of the sink roll 6 and the other end thereof is opened below the sink roll 6 to prevent stagnation of the dross.

68. 发明专利

JPH07180015A HOT DIP METAL COATING DEVICE 失效
公开(公告)号：JPH07180015A
公开(公告)日：1995-07-18
申请号：JP32778793
申请日：1993-12-24
申请人： NIPPON KOKAN KK
发明人： KURIHARA MASANORI , SUZUKAWA YUTAKA
IPC分类号： C23C2/00 , C23C2/40
摘要： PURPOSE:To provide a hot dip metal coating device capable of effectively preventing winding of the bottom dross in a plating bath which is of a problem when a band-shaped metallic member is subjected to hot dip metal coating. CONSTITUTION:A plating bath tank 3 housing molten metal and a sink roll 10 disposed in this plating bath tank 3 are used as main constituting members. Recessed parts 16 concentrical with the end faces of this sink roll 10 are formed at the end faces of the roll. The depth of these recessed parts 16 satisfies a relation 2L/D>=0.2 when L is defined as the depth of the recessed parts from the end faces of the roll and D as the diameter of the roll. As a result, the bottom dross is controlled to a direction parting from the sink roll by the swirling flow from the recessed parts 16 of the end face of the sink roll generated by rotation of the sink roll 10 when the band-shaped metallic member 1 is subjected to hot clip metal coating.

69. 发明专利

JPH0633150A STRIP COOLER 失效
公开(公告)号：JPH0633150A
公开(公告)日：1994-02-08
申请号：JP20942892
申请日：1992-07-15
申请人： NIPPON KOKAN KK
发明人： FUJII YOSHIMOTO , TADA TAKESHI , SUZUKAWA YUTAKA
IPC分类号： C21D1/00 , C21D9/573
摘要： PURPOSE:To provide a cooling means for strips in a continuous annealing furnace, etc., which is high in the controllability of a cooling treatment, is additionally improved in cooling efficiency and does not generate draw marks, etc., on the strips. CONSTITUTION:The constitution of the strip cooler is used as the constitution of a rapid cooling zone 2 of the continuous annealing furnace for the strips X. Further, gaseous H2-N2 for 7% concn. of H2 is supplied as the atmosphere in the duct of the strip cooler and the gas is supplied into the heating and soaking zone 1 and the cooling zone 3 existing before and behind the rapid cooling zone 2.

70. 发明专利

JPH05208763A MEANDERING CORRECTION METHOD FOR STRIP CONTINUOUS TREATMENT LINE 失效
公开(公告)号：JPH05208763A
公开(公告)日：1993-08-20
申请号：JP4232992
申请日：1992-01-31
申请人： NIPPON KOKAN KK
发明人： SUZUKAWA YUTAKA , SATO TOSHIO , SUGIYAMA SHUNICHI
IPC分类号： B65H23/032
摘要： PURPOSE:To realize rapid correction of meandering and to improve safety by disposing two or more meandering detectors with a distance therebetween in a position situated upper stream from a steering roll, analyzing the meandering situation of a strip from the time change of an output therefrom, and correcting meandering. CONSTITUTION:In the strip continuous treatment line of a continuous melting galvanizing line heating passage, a strip 5 is conveyed in a state that it is run in a meandering state around a plurality of conveyance rolls 6 between upper stream and downstream steering rolls 1 and 2. In this case, meandering detectors 10, 11, 20, and 21 are disposed two at each of positions situated upper stream from the steering rolls 1 and 2. From the time change of each meandering detected value and the conveying condition of the strip 5, the meandering situation of the strip is analyzed by using a formula of (d y/dx )- K .(d y/dx )=0, and correction of meandering is carried out. In the formula, K is equal to alpha.T/E.I, wherein T is a line tension, E is a Young's modulus, and I is a sectional secondary moment.

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