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    • 1. 发明授权
    • Method and apparatus for dry testing vapor recovery systems
    • 蒸汽回收系统的干法测试方法和装置
    • US5715875A
    • 1998-02-10
    • US711174
    • 1996-09-09
    • Robert P. ClaryMark D. DalhartChris Cusveller
    • Robert P. ClaryMark D. DalhartChris Cusveller
    • B67D7/04B65B1/04
    • B67D7/0496
    • A vapor recovery valve that includes two mechanisms for opening the valve is disclosed. The first mechanism opens the valve when fuel is being dispensed by a fuel delivery system. The second mechanism selectively opens the valve independent of whether the fuel delivery system is dispensing fuel. A method for dry testing a vapor recovery system is also disclosed. The method involves disabling the fuel dispensing capability of the fuel delivery system, and then operating the vapor recovery system at a rate that corresponds to a predetermined imaginary fuel dispensing rate. Next, the vapor recovery path is opened, and its operation is measured and determined if it is sufficient for the imaginary fuel delivery rate.
    • 公开了一种包括用于打开阀的两个机构的蒸气回收阀。 当燃料由燃料输送系统分配时,第一机构打开阀门。 第二机构选择性地打开阀,而不管燃料输送系统是否分配燃料。 还公开了一种用于干法测试蒸气回收系统的方法。 该方法包括禁用燃料输送系统的燃料分配能力,然后以对应于预定的虚拟燃料分配速率的速率操作蒸汽回收系统。 接下来,打开蒸汽回收路径,如果虚拟燃料输送量足够,则测量并确定其运行。
    • 4. 发明授权
    • Dispensing nozzles
    • 点胶喷嘴
    • US5645115A
    • 1997-07-08
    • US300996
    • 1994-09-06
    • James E. KestermanPaul B. AndersonChester W. WoodMark D. DalhartDavid K. Larson
    • James E. KestermanPaul B. AndersonChester W. WoodMark D. DalhartDavid K. Larson
    • B67D7/42B67D7/48B67D7/50B67D5/00
    • B67D7/42B67D7/48B67D7/50
    • A fuel nozzle has a modular construction wherein valve, venturi and spout modules are mounted in a bore formed in a nozzle body. The main fuel valve is controlled, independently of fuel pressurization, in response to a mechanical signal input, acting through a servo valve. The mechanical signal input is provide by a finger displaced trigger, acting through a pivotal lever arm and latching means that form part of the automatic shut off means for preventing overfill of a fuel tank. The venturi module has a venturi passage for generating a vacuum employed in the automatic shut off mechanism. The venturi module includes a bypass passage that enables sufficient vacuum force to be generated at both high and low flow rates. The spout module comprise an extruded spout (including a venturi vent passage) and a pair of mechanical adapter shells that are mechanical locked onto the spout and mechanically locked to the nozzle body, to secure the several modules in assembled relation.
    • 燃料喷嘴具有模块化结构,其中阀,文氏管和喷口模块安装在形成在喷嘴体中的孔中。 主要燃料阀根据通过伺服阀作用的机械信号输入而独立于燃料加压进行控制。 机械信号输入由手指移动的触发器提供,通过枢转的杠杆臂和闭锁装置,锁定装置形成自动关闭装置的一部分,用于防止燃料箱的溢出。 文丘里模块具有用于产生在自动关闭机构中使用的真空的文氏管通道。 文氏管模块包括旁路通道,其能够在高流量和低流量下产生足够的真空力。 喷口模块包括挤压出口(包括文氏管通气通道)和机械锁定在喷口上并机械地锁定到喷嘴体上的机械适配器壳,以将组合的几个模块固定。
    • 6. 发明授权
    • Selector valve
    • 选择阀
    • US5653261A
    • 1997-08-05
    • US673332
    • 1996-06-28
    • Mark D. DalhartRalph F. Gessner, Jr.
    • Mark D. DalhartRalph F. Gessner, Jr.
    • F16K11/074E03B5/00
    • F16K11/0743Y10T137/86501Y10T137/86823Y10T137/87627
    • An improved selector valve includes a sealing disc with a sealing face biased against an opposed sealing face of a port plate. The sealing disc has a channel located in the sealing face which communicates with an outlet port and a single selected inlet port on the port plate while simultaneously sealing off all other inlet ports. A venturi eductor has a suction passage sealed directly to the port plate outlet for connecting the venturi directly to a selected inlet port. A connection bridge spans a tolerance gap between the port plate to the eductor. The flow path of the fluid through the selector valve has been streamlined to eliminate stagnation points and minimize turbulent flow of the fluid. As a result, the dilution rate of the chemical and water being dispensed upon actuation of the valve is improved and purging of the selector valve is eliminated because the amount of residual chemical remaining in the selector valve is minimized. Moreover, the material selection of the sealing disc enables a wider temperature range of operation for the selector valve without thermal expansion or contraction which may detrimentally effect the seals between the adjacent proponents of the selector valve.
    • 一种改进的选择阀包括密封盘,其密封面偏压在端口板的相对的密封面上。 密封盘具有位于密封面中的通道,该通道与端口板上的出口和单个选定的入口连通,同时密封所有其它入口。 文氏管喷射器具有直接密封到端口板出口的吸入通道,用于将文丘里管直接连接到选定的入口。 连接桥跨越端口板与喷射器之间的公差间隙。 通过选择阀的流体的流动路径已经流线化,以消除滞留点并使流体的湍流最小化。 结果是,由于阀门的致动时分配的化学品和水的稀释率得到改善,并且由于残留在选择阀中的剩余化学物质的量最小化,所以选择阀的清洗被消除。 此外,密封盘的材料选择使得选择阀的操作温度范围更宽,而不会发生热膨胀或收缩,这可能不利地影响选择阀的相邻支撑体之间的密封。
    • 7. 发明授权
    • Vapor recovery fuel nozzles
    • US5620030A
    • 1997-04-15
    • US476503
    • 1995-06-07
    • Mark D. DalhartPaul B. AndersonDavid A. Damico
    • Mark D. DalhartPaul B. AndersonDavid A. Damico
    • B67D7/42B67D7/48B67D7/54B65B1/04B65B3/04
    • B67D7/421B67D7/48B67D7/54
    • A vacuum assisted, vapor recovery fuel nozzle comprising a nozzle body and a spout mounted thereon. The spout comprises an inner tube and an outer tube. The inner tube and a passage in the body provide a fuel passage. The inner and outer tubes define a vapor return passage in the spout. The inner end of the outer tube is provided with a radial flange, which is clamped, by a breakaway nut, on the nozzle body to mount the spout thereon. The nozzle is provided with an automatic shut off mechanism, which includes a venturi valve for generating a negative pressure. In the absence of an overfill condition, this negative pressure is vented to atmosphere through a vent tube disposed in the vapor return passage. A normally closed vapor return valve, mounted on the nozzle body, is opened in response to the nozzle's flow control valve, so that vapors will be drawn into the entrance of the vapor return passage at the outer end of the spout. The spout is formed by telescoping the inner tube into a ferrule and the ferrule into the outer tube to provide a reenforced outer end for the spout. The nozzle body is compositely formed by a body member, a vapor cap and a housing for a main valve trip mechanism. The coaxial hose is attached to the hand grip of the nozzle at a downward angle. An optional, vestigial shroud is provided to prevent escape of vapors during delivery of fuel.
    • 9. 发明授权
    • Vapor recovery fuel nozzles
    • 蒸气回收燃料喷嘴
    • US5813443A
    • 1998-09-29
    • US986521
    • 1992-12-07
    • Mark D. DalhartPaul B. AndersonDavid A. Damico
    • Mark D. DalhartPaul B. AndersonDavid A. Damico
    • B67D7/42B67D7/48B67D7/54B65B1/04
    • B67D7/421B67D7/48B67D7/54
    • A vacuum assisted, vapor recovery fuel nozzle comprising a nozzle body and a spout mounted thereon. The spout comprises an inner tube and an outer tube. The inner tube and passage means in the body provide a fuel passage. The inner and outer tubes define a vapor return passage in the spout. The inner end of the outer tube is provided with a radial flange, which is clamped, by a breakaway nut, on the nozzle body to mount the spout thereon. The nozzle is provided with an automatic shut off mechanism, which includes a venturi valve for generating a negative pressure. In the absence of an overfill condition, this negative pressure is vented to atmosphere through a vent tube disposed in the vapor return passage. A normally closed vapor return valve, mounted on the nozzle body, is opened in response to the nozzle's flow control valve, so that vapors will be drawn into the entrance of the vapor return passage at the outer end of the spout. The spout is formed by telescoping the inner tube into a ferrule and the ferrule into the outer tube to provide a reenforced outer end for the spout. The nozzle body is compositely formed by a body member, a vapor cap and housing means for a main valve trip mechanism. The coaxial hose is attached to the hand grip of the nozzle at a downward angle. An optional, vestigial shroud is provided to prevent escape of vapors during delivery of fuel.
    • 一种真空辅助蒸汽回收燃料喷嘴,其包括喷嘴体和安装在其上的喷口。 喷嘴包括内管和外管。 本体内管和通道装置提供燃料通道。 内管和外管在出口中限定蒸气返回通道。 外管的内端设置有径向凸缘,该凸缘通过分流螺母在喷嘴体上夹紧以将喷口安装在其上。 喷嘴设置有自动关闭机构,其包括用于产生负压的文丘里阀。 在没有过度填充状态的情况下,该负压通过设置在蒸汽返回通道中的排气管排放到大气中。 响应于喷嘴的流量控制阀,安装在喷嘴本体上的常闭蒸气回流阀被打开,使得蒸汽将在喷口的外端被吸入蒸气返回通道的入口。 喷嘴通过将内管伸缩成套圈而形成,并且将套圈插入外管中以为喷口提供一个加强的外端。 喷嘴体由主体部件,蒸气盖和用于主阀脱扣机构的壳体装置复合形成。 同轴软管以向下的角度附接到喷嘴的手柄。 提供可选的残留护罩,以防止在运送燃料过程中蒸气逸出。
    • 10. 发明授权
    • Vapor recovery fuel nozzles
    • 蒸气回收燃料喷嘴
    • US5620031A
    • 1997-04-15
    • US486102
    • 1995-06-07
    • Mark D. DalhartPaul B. AndersonDavid A. Damico
    • Mark D. DalhartPaul B. AndersonDavid A. Damico
    • B67D7/42B67D7/48B67D7/54B65B1/30B65B3/28
    • B67D7/421B67D7/48B67D7/54
    • A vacuum assisted, vapor recovery fuel nozzle comprising a nozzle body and a spout mounted thereon. The spout comprises an inner tube and an outer tube. The inner tube and a passage in the body provide a fuel passage. The inner and outer tubes define a vapor return passage in the spout. The inner end of the outer tube is provided with a radial flange, which is clamped, by a breakaway nut, on the nozzle body to mount the spout thereon. The nozzle is provided with an automatic shut off mechanism, which includes a venturi valve for generating a negative pressure. In the absence of an overfill condition, this negative pressure is vented to atmosphere through a vent tube disposed in the vapor return passage. A normally closed vapor return valve, mounted on the nozzle body, is opened in response to the nozzle's flow control valve, so that vapors will be drawn into the entrance of the vapor return passage at the outer end of the spout. The spout is formed by telescoping the inner tube into a ferrule and the ferrule into the outer tube to provide a reenforced outer end for the spout. The nozzle body is compositely formed by a body member, a vapor cap and a housing for a main valve trip mechanism. The coaxial hose is attached to the hand grip of the nozzle at a downward angle. An optional, vestigial shroud is provided to prevent escape of vapors during delivery of fuel.
    • 一种真空辅助蒸汽回收燃料喷嘴,其包括喷嘴体和安装在其上的喷口。 喷嘴包括内管和外管。 内管和主体中的通道提供燃料通道。 内管和外管在出口中限定蒸气返回通道。 外管的内端设置有径向凸缘,该凸缘通过分流螺母在喷嘴体上夹紧以将喷口安装在其上。 喷嘴设置有自动关闭机构,其包括用于产生负压的文丘里阀。 在没有过度填充状态的情况下,该负压通过设置在蒸汽返回通道中的排气管排放到大气中。 响应于喷嘴的流量控制阀,安装在喷嘴本体上的常闭蒸气回流阀被打开,使得蒸汽将在喷口的外端被吸入蒸气返回通道的入口。 喷嘴通过将内管伸缩成套圈而形成,并且将套圈插入外管中以为喷口提供一个加强的外端。 喷嘴体由主体部件,蒸气盖和用于主阀脱扣机构的壳体复合形成。 同轴软管以向下的角度附接到喷嘴的手柄。 提供可选的残留护罩,以防止在运送燃料过程中蒸气逸出。