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公开(公告)号：US4498428A
公开(公告)日：1985-02-12
申请号：US598610
申请日：1984-04-10
CPC分类号： F23N1/082
摘要： A desired ratio of offgas to fuel gas is maintained for a fuel mixture supplied to the burners associated with a boiler by venting steam as required to insure than all offgas may be combusted while maintained the desired offgas to fuel gas ratio. The venting of steam causes the fuel gas control, which is based on steam pressure, to vary the flow rate of the fuel gas so as to maintain the desired offgas-fuel gas ratio. Control of the combustion process for the boiler in this manner results in total combustion of the offgas without violating process constraints.
摘要翻译： 通过根据需要排出蒸气来保持供给到与锅炉相关的燃烧器的燃料混合物的期望比例，以确保所有废气可以在保持所需废气与燃料气体比之间燃烧。 蒸汽的排出导致基于蒸汽压力的燃料气体控制来改变燃料气体的流量，以保持所需的废气 - 燃料气体比。 以这种方式控制锅炉的燃烧过程导致废气的总燃烧而不违反工艺限制。
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公开(公告)号：US4583497A
公开(公告)日：1986-04-22
申请号：US589445
申请日：1984-03-14
CPC分类号： F22B35/008
摘要： Boiler optimization is included in on-line control of parallel boilers by multiplying the total heat per unit time which must be supplied to all parallel boilers by the percentage of the total heat which should be supplied to each boiler in order to substantially maximize energy efficiency. The result of such multiplication is the heat per unit time which should be supplied to each boiler. The fuel and air supplied to each boiler is controlled so as to supply the thus determined heat per unit time which not only results in maintenance of a desired header pressure but also results in substantially maximizing energy efficiency of the parallel boilers.
摘要翻译： 锅炉优化包括在并联锅炉的在线控制中，通过将必须提供给所有并联锅炉的单位时间内的总热量乘以应提供给每个锅炉的总热量的百分比，以实质上最大限度地提高能源效率。 这种乘法的结果是每单位时间的热量应该被提供给每个锅炉。 控制供应给每个锅炉的燃料和空气，以便每单位时间提供如此确定的热量，这不仅导致维持所需的集管压力，而且导致并联锅炉的能量效率的实质上最大化。
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公开(公告)号：US4497283A
公开(公告)日：1985-02-05
申请号：US553443
申请日：1983-11-18
IPC分类号： F22D5/26
CPC分类号： F22D5/26
摘要： The control of the actual liquid level in a boiler is accomplished by using the flow rate of the fuel to the combustion system associated with the boiler to generate a signal which is utilized to bias a control signal generated in response to steam flow rate and the output from a conventional level controller in such a manner that swell and shrink caused by changes in fuel flow rate is compensated for and the desired liquid level is maintained in the boiler.
摘要翻译： 通过使用与锅炉相关的燃烧系统的燃料的流量来实现对锅炉中实际液面的控制，以产生用于偏置响应于蒸汽流量而产生的控制信号的信号，并且输出 从常规的液位控制器以这样的方式补偿由燃料流量变化引起的膨胀和收缩，并且在锅炉中保持期望的液位。
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公开(公告)号：US4742783A
公开(公告)日：1988-05-10
申请号：US82153
申请日：1987-08-06
CPC分类号： F23N1/022 , F23N2023/08 , F23N2041/18 , F23N5/006 , F23N5/18
摘要： For continuous combustion air control in a hazardous waste incinerator, two signals are generated which totalize the air required on a fuel supplied basis. One signal is responsive to measured totalized fuel flow and this total can include fuel flow signals which are limited to the fraction of available air which corresponds to the fuel flow. The other signal is responsive to the totalized fuel flow that is commanded for maintaining an incinerator condition. In use the signal which requires the greater air flow is selected as the actual control signal for combustion air, and this control signal is biased to increase the air flow to obtain complete combustion of the hazardous waste by a controller acting on the measured amount of oxygen in the flue gas. In this manner the combustion air is manipulated in parallel with the waste fuel and if the fuel flow is limited by the available air, the air flow is limited to match the limited fuel flow.
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公开(公告)号：US4557686A
公开(公告)日：1985-12-10
申请号：US631367
申请日：1984-07-16
申请人： Ronald J. LaSpisa
发明人： Ronald J. LaSpisa
IPC分类号： F23N1/00
CPC分类号： F23N1/00
摘要： The flow of offgas from a common source as a fuel for multiple boilers is controlled so as to maintain a desired minimum pressure for the offgas supply unless the maintenance of such a desired minimum pressure would result in so much offgas being supplied to a boiler that a maximum offgas to fuel gas ratio is exceeded which impairs combustion. If the primary control would cause too much offgas to be supplied to a boiler, then the flow of offgas to such boiler is manipulated so as to prevent the maximum offgas to fuel gas ratio from being exceeded.
摘要翻译： 控制来自作为多个锅炉的燃料的共同来源的废气的流动，以便保持废气供应的期望的最小压力，除非维持这样的期望的最小压力将导致如此多的废气被供应到锅炉， 超过最大废气与燃料气体比例，从而损害燃烧。 如果主要控制将导致过多的废气被供应给锅炉，则操纵到这种锅炉的废气流，以便防止超过最大废气与燃料气体的比例。
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公开(公告)号：US4124340A
公开(公告)日：1978-11-07
申请号：US762550
申请日：1977-01-25
CPC分类号： B65H59/385 , B29C47/34 , B29C47/92 , B29C2947/92028 , B29C2947/92085 , B29C2947/92523 , B29C2947/9258 , B29C2947/92933 , B29C2947/92952 , B29C47/0023 , B29C47/0026 , B29C47/0057 , B65H2701/331
摘要： A process and apparatus for minimizing breakage and stretching during the high speed production of plastic pipe is provided wherein a pipe is extruded at a first linear rate of speed, a slack segment is established and maintained between the extruder and a pipe winder, and the pipe is taken up on the winder at a second linear rate of speed which is the same as or different from the first rate, wherein the pipe is taken up on the winder responsive to the degree of slack in the slack segment.
摘要翻译： 提供了一种用于在塑料管的高速生产期间最小化断裂和拉伸的方法和装置，其中管以第一线速度挤出，在挤出机和管卷绕机之间建立并保持松弛段，并且管 以与第一速率相同或不同于第一速率的第二线速度卷绕在卷绕机上，其中根据松弛段的松弛程度将管卷绕在卷绕机上。
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公开(公告)号：US4107246A
公开(公告)日：1978-08-15
申请号：US751860
申请日：1976-12-20
申请人： Ronald J. LaSpisa
发明人： Ronald J. LaSpisa
CPC分类号： B29C47/92 , B29C47/70 , G05D11/132 , G05D7/0605 , B29C2947/92019 , B29C2947/9259 , B29C2947/926 , B29C2947/92885 , B29C2947/92904 , B29C2947/92952 , B29C47/0023
摘要： In an extrusion system wherein a single source of molten extrudable material is utilized to provide feed to a plurality of extrusion lines, the rate of flow of extrudable material from the source thereof to the plurality of extrusion lines is controlled to provide a preselected total product output rate. The position of a flow control valve means associated with each extrusion line is controlled to maintain a preselected material supply pressure upstream of said plurality of extrusion lines and to provide a preselected relationship among the measured production rates of said plurality of extrusion lines. In a preferred embodiment, an extrusion system having two extrusion lines supplied by a single source of molten extrudable material is controlled to provide a preselected total production rate, a preselected molten material source pressure, and a preselected balance between the extrusion rates of the two extrusion lines.
摘要翻译： 在挤出系统中，其中使用单一熔融可挤出材料源来向多条挤出生产线提供进料，控制可挤出材料从其来源到多条挤出生产线的流动速率，以提供预选的总产品产量 率。 控制与每个挤出生产线相关联的流量控制阀装置的位置以在所述多个挤出生产线上游保持预选的材料供应压力，并提供所述多个挤出生产线的测量生产率之间的预选关系。 在优选的实施方案中，控制具有由单个熔融可挤出材料源供应的两个挤出生产线的挤出系统，以提供预选的总生产速率，预选的熔融材料源压力和两个挤出物的挤出速率之间的预选平衡 线条。
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公开(公告)号：US4237082A
公开(公告)日：1980-12-02
申请号：US948605
申请日：1978-10-04
CPC分类号： B29C47/92 , B29C2947/92085 , B29C2947/92209 , B29C2947/92409 , B29C2947/92466 , B29C2947/926 , B29C2947/92704 , B29C2947/92876 , B29C2947/92923 , B29C47/0016 , B29C47/0023
摘要： The rate of extrusion of an elongated article from a dynamic extruder is measured and a measurement signal representative thereof is established. The measurement signal is then compared with a setpoint signal representing the desired extrusion rate to produce a control signal which is responsive to the difference between the measurement signal and the setpoint signal. The rate of introduction of polymer particles into the plasticization section of the extruder is automatically manipulated responsive to the control signal to maintain the extrusion rate at least substantially constant at the desired rate. The control signal can be adjusted to take into account variations in the temperature of the molten polymer entering the long land cooling die of the extruder.
摘要翻译： 测量来自动态挤出机的细长制品的挤压速率并建立其代表的测量信号。 然后将测量信号与表示所需挤出速率的设定点信号进行比较，以产生响应于测量信号和设定点信号之间的差的控制信号。 将聚合物颗粒引入挤出机的塑化部分的速率是根据控制信号自动操作的，以保持挤出速率至少基本上恒定在所需的速率。 可以调整控制信号以考虑进入挤出机的长地冷却模具的熔融聚合物的温度变化。
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公开(公告)号：US4120630A
公开(公告)日：1978-10-17
申请号：US666283
申请日：1976-03-12
CPC分类号： B29C47/92 , B29C2947/92085 , B29C2947/92209 , B29C2947/9258 , B29C2947/926 , B29C2947/92704 , B29C2947/92828 , B29C2947/92876 , B29C2947/92904 , B29C2947/92923 , B29C47/0009 , B29C47/0016 , B29C47/0023
摘要： The rate of extrusion of an elongated article from a dynamic extruder is measured and a measurement signal representative thereof is established. The measurement signal is then compared with a setpoint signal representing the desired extrusion rate to produce a control signal which is responsive to the difference between the measurement signal and the setpoint signal. The rate of introduction of polymer particles into the plasticization section of the extruder is automatically manipulated responsive to the control signal to maintain the extrusion rate at least substantially constant at the desired rate. The control signal can be adjusted to take into account variations in the temperature of the molten polymer entering the long land cooling die of the extruder.
摘要翻译： 测量来自动态挤出机的细长制品的挤压速率并建立其代表的测量信号。 然后将测量信号与表示所需挤出速率的设定点信号进行比较，以产生响应于测量信号和设定点信号之间的差的控制信号。 将聚合物颗粒引入挤出机的塑化段的速率是根据控制信号自动操作的，以保持挤出速率至少基本上恒定在所需的速率。 可以调整控制信号以考虑进入挤出机的长地冷却模具的熔融聚合物的温度变化。
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公开(公告)号：US4739714A
公开(公告)日：1988-04-26
申请号：US82152
申请日：1987-08-06
CPC分类号： F23N1/002 , F23G5/008 , F23G5/50 , F23G2207/112 , F23G2900/55011 , F23N2023/08 , F23N2037/08 , F23N2041/18
摘要： The flow rate of multiple fuel streams supplied to an incinerator are controlled so as to provide maximum temperature and heat release conditions in the incinerator that will allow complete combustion of hazardous waste fuel. In addition, a minimum temperature for the incinerator is maintained by manipulating the flow rate of an auxiliary fuel such as natural gas, that is also supplied to the incinerator. In use, a control signal for manipulating a waste fuel flow is selected as the lowest signal of signals representative of a maximum temperature for the incinerator, a maximum heat release rate for the incinerator, a maximum heat release rate for a particular waste fuel, a maximum pressure for the incinerator, and the combustion air available.
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