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公开(公告)号：US06595048B1
公开(公告)日：2003-07-22
申请号：US09632604
申请日：2000-08-04
IPC分类号： G01F700
CPC分类号： F17C13/028 , F17C9/00 , F17C13/026 , F17C2221/033 , F17C2223/0153 , F17C2223/0161 , F17C2223/043 , F17C2223/046 , F17C2270/0168 , G01F1/88
摘要： A system for dispensing cryogenic liquid to a use device includes a bulk storage tank providing liquid natural gas (LNG) to a sump containing a meter submerged in LNG. A temperature probe is also submerged in the LNG. A dispensing line is positioned between the meter and dispensing hose and includes a dispensing valve. A drain line bypasses the dispensing valve and features a check valve so that LNG trapped in the hose after dispensing is returned to the sump due to pressurization by ambient heat. A capacitance probe is submerged in the LNG in the sump and provides a dielectric that is compared by a microprocessor with the dielectric for pure methane at the same temperature to determine the purity of the LNG. An approximate linear relation between density and dielectric may be used to determine density and mass flow for the LNG from the measured dielectric.
摘要翻译： 用于将低温液体分配到使用装置的系统包括大容量储存罐，其将液体天然气（LNG）提供给包含浸没在LNG中的仪表的贮槽。 温度探头也浸没在液化天然气中。 分配管线位于仪表和分配软管之间，并且包括分配阀。 排水管线绕过分配阀并具有止回阀，使得在分配之后被困在软管中的LNG由于环境热量的加压而返回到贮槽中。 一个电容探头浸没在贮槽中的LNG中，并提供了一个电介质，通过微处理器与相同温度下纯甲烷的电介质进行比较，以确定LNG的纯度。 可以使用密度和电介质之间的近似线性关系来确定来自测量的电介质的LNG的密度和质量流量。
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公开(公告)号：US06955095B2
公开(公告)日：2005-10-18
申请号：US10805997
申请日：2004-03-22
IPC分类号： G01F1/34 , B67D7/08 , F17C9/00 , F17C13/02 , G01F1/42 , G01F1/50 , G01F1/88 , G01N27/22 , G01F1/58
CPC分类号： F17C13/028 , F17C9/00 , F17C13/026 , F17C2221/033 , F17C2223/0153 , F17C2223/0161 , F17C2223/043 , F17C2223/046 , F17C2270/0168 , G01F1/88
摘要： A system for dispensing cryogenic liquid to a use device includes a bulk storage tank providing LNG to a sump containing a meter submerged in LNG. A temperature probe is also submerged in the LNG. A dispensing line is positioned between the meter and dispensing hose and includes a dispensing valve. A drain line bypasses the dispensing valve and features a check valve so that LNG trapped in the hose after dispensing is returned to the sump due to pressurization by ambient heat. A capacitance probe is submerged in the LNG in the sump and provides a dielectric that is compared by a microprocessor with the dielectric for pure methane at the same temperature to determine the purity of the LNG. An approximate linear relation between density and dielectric may be used to determine density and mass flow for the LNG from the measured dielectric. Alternatively, a density compensation factor based upon the dielectrics may be calculated and applied to the density of pure methane to obtain the density and mass flow of the LNG. A further alternative embodiment substitutes a compensating meter for the capacitor and the equations for the resulting two meters may be solved to determine density and mass flow for the LNG.
摘要翻译： 用于向使用装置分配低温液体的系统包括向包含浸没在LNG中的仪表的贮槽提供LNG的大容量储存罐。 温度探头也浸没在液化天然气中。 分配管线位于仪表和分配软管之间，并且包括分配阀。 排水管线绕过分配阀并具有止回阀，使得在分配之后被困在软管中的LNG由于环境热量的加压而返回到贮槽中。 一个电容探头浸没在贮槽中的LNG中，并提供了一个电介质，通过微处理器与相同温度下纯甲烷的电介质进行比较，以确定LNG的纯度。 可以使用密度和电介质之间的近似线性关系来确定来自测量的电介质的LNG的密度和质量流量。 或者，可以计算基于电介质的密度补偿因子并将其应用于纯甲烷的密度，以获得LNG的密度和质量流量。 另一个替代实施例将补偿计量器代替电容器，并且可以解决所得到的两个电表的等式以确定LNG的密度和质量流量。
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公开(公告)号：US06732594B2
公开(公告)日：2004-05-11
申请号：US10366743
申请日：2003-02-13
IPC分类号： G01F158
CPC分类号： F17C13/028 , F17C9/00 , F17C13/026 , F17C2221/033 , F17C2223/0153 , F17C2223/0161 , F17C2223/043 , F17C2223/046 , F17C2270/0168 , G01F1/88
摘要： A system for dispensing cryogenic liquid to a use device includes a bulk storage tank providing LNG to a sump containing a meter submerged in LNG. A temperature probe is also submerged in the LNG. A dispensing line is positioned between the meter and dispensing hose and includes a dispensing valve. A drain line bypasses the dispensing valve and features a check valve so that LNG trapped in the hose after dispensing is returned to the sump due to pressurization by ambient heat. A capacitance probe is submerged in the LNG in the sump and provides a dielectric that is compared by a microprocessor with the dielectric for pure methane at the same temperature to determine the purity of the LNG. An approximate linear relation between density and dielectric may be used to determine density and mass flow for the LNG from the measured dielectric. Alternatively, a density compensation factor based upon the dielectrics may be calculated and applied to the density of pure methane to obtain the density and mass flow of the LNG. A further alternative embodiment substitutes a compensating meter for the capacitor and the equations for the resulting two meters may be solved to determine density and mass flow for the LNG.
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公开(公告)号：US6044647A
公开(公告)日：2000-04-04
申请号：US906512
申请日：1997-08-05
申请人： Thomas K. Drube , Paul A. Drube , A. Duane Preston
发明人： Thomas K. Drube , Paul A. Drube , A. Duane Preston
CPC分类号： F17C7/02 , F17C2221/033 , F17C2223/0161 , F17C2223/033 , F17C2225/0161 , F17C2225/033 , F17C2227/0114 , F17C2227/0393 , F17C2250/01 , F17C2250/032 , F17C2260/02 , F17C2265/065 , F17C2270/0168 , F28C3/06
摘要： A cryogenic liquid transfer system, for servicing a use device, releases stored cryogen from a bulk storage tank to a gas supply tank and a dispenser tank. The liquid cryogen in the gas supply tank is circulated through a circuit that includes a heat exchanger and the gas thus generated is returned to the gas supply tank so as to pressurize it. The pressurized liquid cryogen is released from the gas supply tank so that it flows through a vaporizer. The gas produced by the vaporizer is bubbled through the liquid cryogen in the dispenser tank so as to raise its temperature and pressure to the level required by the use device being serviced. Gas from the vaporizer is then delivered to the space above the liquid cryogen in the dispenser tank to as to create a pressure head that will cause the liquid cryogen to flow to the use device upon release. A venturi is connected to the tubing between the gas supply tank and the dispenser tank and is used to reduce the pressure in the bulk storage tank.
摘要翻译： 用于维修使用装置的低温液体输送系统将存储的冷冻剂从大容量储存箱释放到气体供应罐和分配器罐。 气体供给槽中的液体冷冻剂通过包括热交换器的回路循环，由此产生的气体返回到气体供给箱以对其进行加压。 加压液体冷冻剂从气体供应罐释放，使其流过蒸发器。 由蒸发器产生的气体鼓泡通过分配器罐中的液体冷冻剂，以将其温度和压力升高到被维修的使用装置所要求的水平。 然后将来自蒸发器的气体输送到分配器罐中液体冷冻剂上方的空间，以产生压力头，该压头将在释放时使液体冷冻剂流到使用装置。 文丘里管连接到气体供应罐和分配器罐之间的管道，并用于降低大容量储罐中的压力。
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公开(公告)号：US06938581B2
公开(公告)日：2005-09-06
申请号：US10449979
申请日：2003-05-30
摘要： A supplemental water heater tank and system features a supplemental tank with an inner vessel surrounded by an outer jacket. The space there between is generally evacuated of air so that the inner vessel is vacuum insulated. The supplemental tank includes water inlet and outlet ports. Water is heated in a water heater and transferred from the upper portion of the water heater tank to the lower portion of the vacuum-insulated supplemental tank through an insulated line and a dip tube that extends between the water inlet port and the bottom portion of the inner vessel. Hot water is withdrawn from the upper portion of the inner vessel of the supplemental tank for use in a home or the like.
摘要翻译： 补充的热水器罐和系统具有补充罐，内部容器被外护套包围。 其间的空间通常被排空空气，使得内容器是真空绝缘的。 补充罐包括进水口和出水口。 水在热水器中加热，并通过绝缘线和浸入管从水加热器箱的上部转移到真空绝热补充罐的下部，该浸渍管在进水口和底部之间延伸 内船。 热水从辅助容器的内部容器的上部排出，用于家庭等。
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