公开(公告)号：US10280908B2

公开(公告)日：2019-05-07

申请号：US15357427

申请日：2016-11-21

申请人： Saylee P. Panchbhai ,  Kurtis Kandel

发明人： Saylee P. Panchbhai ,  Kurtis Kandel

IPC分类号： E21B47/008 ,  F04B17/03 ,  E21B43/12 ,  E21B47/00 ,  F04B19/22 ,  F04B47/06 ,  H02P6/00 ,  H02P6/08 ,  F04B49/06 ,  F04B51/00 ,  H02P21/00 ,  H02P25/064

摘要： Systems and methods for determining the existence of a pump-off condition in an ESP system and controlling the motor to prevent fluid pound that would otherwise result from the pump-off condition. The current drawn by the ESP motor during a power stroke is monitored and the instantaneous force generated by the motor is determined from the instantaneous current. Pump-off conditions may be indicated by sudden, large decreases in the generated force, smaller decreases in force that occur over a longer period, or forces below those seen during a dwell time. In response to detecting a pump-off condition, the motor may be stepped through the rest of the stroke, temporarily halted and re-initialized, thereby preventing potentially damaging fluid pound that would otherwise result from the pump-off condition.

公开(公告)号：US20170145995A1

公开(公告)日：2017-05-25

申请号：US15357427

申请日：2016-11-21

申请人： Saylee P. Panchbhai ,  Kurtis Kandel

发明人： Saylee P. Panchbhai ,  Kurtis Kandel

IPC分类号： F04B17/03 ,  E21B47/00 ,  H02P6/08 ,  F04B47/06 ,  H02P6/00 ,  E21B43/12 ,  F04B19/22

CPC分类号： F04B17/03 ,  E21B43/128 ,  E21B47/0007 ,  F04B19/22 ,  F04B47/06 ,  F04B49/065 ,  F04B51/00 ,  F04B2203/0401 ,  H02P6/006 ,  H02P6/08 ,  H02P21/00 ,  H02P25/064

摘要： Systems and methods for determining the existence of a pump-off condition in an ESP system and controlling the motor to prevent fluid pound that would otherwise result from the pump-off condition. The current drawn by the ESP motor during a power stroke is monitored and the instantaneous force generated by the motor is determined from the instantaneous current. Pump-off conditions may be indicated by sudden, large decreases in the generated force, smaller decreases in force that occur over a longer period, or forces below those seen during a dwell time. In response to detecting a pump-off condition, the motor may be stepped through the rest of the stroke, temporarily halted and re-initialized, thereby preventing potentially damaging fluid pound that would otherwise result from the pump-off condition.

公开(公告)号：US20070057116A1

公开(公告)日：2007-03-15

申请号：US11228652

申请日：2005-09-15

申请人： Steven Sinsabaugh ,  Ann Dirling ,  Kurtis Kandel

发明人： Steven Sinsabaugh ,  Ann Dirling ,  Kurtis Kandel

IPC分类号： B64B1/06

CPC分类号： B64B1/62

摘要： A dehumidification system for removing water vapor from the within the envelope of an airship comprises a pressurizer valve, a blower and a dehumidifier attached to the airship. The pressurizer valve releases air from the envelope and directs the air to the blower. The blower forces the air through the dehumidifier where the air is dried to a desired dew point. The dried air is then forced back into the envelope of the airship, thus reducing the weight of the airship and reducing the amount of condensate that may form during an ascent.

摘要翻译： 用于从飞艇的信封内除去水蒸气的除湿系统包括附接到飞艇的加压阀，鼓风机和除湿机。 加压阀从外壳释放空气并将空气引导到鼓风机。 鼓风机迫使空气通过除湿器，空气被干燥到所需的露点。 然后将干燥的空气强制回到飞艇的信封中，从而减少飞艇的重量并减少在上升期间可能形成的冷凝物的量。