发明授权
- 专利标题: Apparatus and method for thermoelectric cooling of an extraction fluid pump
- 专利标题(中): 提取液泵的热电冷却装置及方法
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申请号: US673202申请日: 1996-06-27
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公开(公告)号: US5738498A公开(公告)日: 1998-04-14
- 发明人: Robert William Allington , Daniel Gene Jameson , Dale A. Davison , Dale Clay , Robin R. Winter , Yoossef Tehrani
- 申请人: Robert William Allington , Daniel Gene Jameson , Dale A. Davison , Dale Clay , Robin R. Winter , Yoossef Tehrani
- 申请人地址: NE Lincoln
- 专利权人: Isco, Inc.
- 当前专利权人: Isco, Inc.
- 当前专利权人地址: NE Lincoln
- 主分类号: B01D11/00
- IPC分类号: B01D11/00 ; B01D11/02 ; B01D11/04 ; F04B9/04 ; F04B15/08 ; F04B49/06 ; F04B53/08 ; F04B53/14 ; F16K15/18 ; G01F1/34 ; G01N1/34 ; G01N1/40 ; G01N30/02 ; G01N30/28 ; G01N30/60 ; G01N35/04 ; G21F5/015 ; F04B39/06 ; F25B21/02
摘要:
In a piston pump for pumping liquid carbon dioxide at a temperature below 30 degrees Fahrenheit and pressures at least as high as 7500 psi at an outlet flow rate in excess of 10 milliliters per minute, the inlet to the pump and the pumphead are each cooled by thermoelectric heat exchangers that are air cooled. The pump is a cam-driven, single-plunger pump with a cam profile that enables the pumping system to avoid distructive reverse torque on the cam, gear train and drive motor after the cam passes top dead center. The volume leaving the pump is determined by measuring only pressure or other parameter related to flow and movement of the plunger. The piston of the pump is supported on both sides of the seal and the support for the piston within the pumphead are machined consentrically and colinearly to the seal gland.