Method and apparatus for surge detection and control in centrifugal gas
compressors
    1.
    发明授权
    Method and apparatus for surge detection and control in centrifugal gas compressors 失效
    离心式气体压缩机中浪涌检测和控制的方法和装置

    公开(公告)号:US4363596A

    公开(公告)日:1982-12-14

    申请号:US150844

    申请日:1980-05-19

    IPC分类号: F01D17/14 F04D27/02

    CPC分类号: F04D27/0246 F01D17/143

    摘要: A centrifugal gas compressor having a shrouded rotatable impeller 14 in an impeller chamber 40, and provided with capacity control vanes 30 and a diffuser passage 18 throttle plate 38, is provided with surge control means including a thermistor 50 which senses a temperature rise beyond a predetermined value in the impeller chamber and exterior of the gas flow path through the impeller, and through relay means such as 52, 58 electrically connected to the thermistor 50 operates to change the compressor operation to a nonsurging condition.

    摘要翻译: 一种离心式气体压缩机,其具有在叶轮室40中的带盖的可旋转叶轮14,并且设有容量控制叶片30和扩散器通道18节流板38,其具有浪涌控制装置,其包括热敏电阻50,该热敏电阻50感测温度升高超过预定值 通过叶轮的气体流路的叶轮室和外部的值以及通过电连接到热敏电阻50的继电装置例如52,58来操作,以将压缩机的运行改变为非降温状态。

    Method and apparatus for surge detection and control in centrifugal gas
compressors
    2.
    发明授权
    Method and apparatus for surge detection and control in centrifugal gas compressors 失效
    离心式气体压缩机中浪涌检测和控制的方法和装置

    公开(公告)号:US4265589A

    公开(公告)日:1981-05-05

    申请号:US49686

    申请日:1979-06-18

    IPC分类号: F01D17/14 F04D27/02 F01D21/12

    CPC分类号: F04D27/0246 F01D17/143

    摘要: A centrifugal gas compressor having a shrouded rotatable impeller 14 in an impeller chamber 40, and provided with capacity control vanes 30 and a diffuser passage 18 throttle plate 38, is provided with surge control means including a thermistor 50 which senses a temperature rise beyond a predetermined value in the impeller chamber and exterior of the gas flow path through the impeller, and through relay means such as 52, 58 electrically connected to the thermistor 50 operates to change the compressor operation to a nonsurging condition.

    摘要翻译: 一种离心式气体压缩机,其具有在叶轮室40中的带盖的可旋转叶轮14,并且设有容量控制叶片30和扩散器通道18节流板38,其具有浪涌控制装置,其包括热敏电阻50,该热敏电阻50感测温度升高超过预定值 通过叶轮的气体流路的叶轮室和外部的值以及通过电连接到热敏电阻50的继电装置例如52,58来操作,以将压缩机的运行改变为非降温状态。

    Oil separation and return system for centrifugal refrigerant compressors
    3.
    发明授权
    Oil separation and return system for centrifugal refrigerant compressors 失效
    离心制冷压缩机分油回油系统

    公开(公告)号:US4213307A

    公开(公告)日:1980-07-22

    申请号:US960362

    申请日:1978-11-13

    申请人: Thomas E. Watson

    发明人: Thomas E. Watson

    CPC分类号: F04D29/063 F25B31/004

    摘要: A refrigerant system with a high speed centrifugal compressor has an arrangement for promoting the continuous return of oil to gear and bearing housing 12 including a coalescing type filter 62 from which separated oil is passed to a jet pump 74, a thermostatically controlled expansion valve 50 operating at a low superheat value, and inwardly pumping shaft seals 26.

    摘要翻译: 具有高速离心式压缩机的制冷剂系统具有用于促进油连续返回到齿轮和轴承壳体12的装置,所述齿轮和轴承壳体12包括聚结型过滤器62,分离的油从该聚结型过滤器62通过喷射泵74,恒温控制膨胀阀50操作 在低过热值下,并且向内泵送轴密封件26。

    HIGH CAPACITY CHILLER COMPRESSOR
    5.
    发明申请
    HIGH CAPACITY CHILLER COMPRESSOR 有权
    高容量冷冻机压缩机

    公开(公告)号:US20090229280A1

    公开(公告)日:2009-09-17

    申请号:US12404040

    申请日:2009-03-13

    IPC分类号: F25B1/00 F25B31/00 F25B41/00

    摘要: A high efficiency, low maintenance single stage or multi-stage centrifugal compressor assembly for large cooling installations. A cooling system provides direct, two-phase cooling of the rotor by combining gas refrigerant from the evaporator section with liquid refrigerant from the condenser section to affect a liquid/vapor refrigerant mixture. Cooling of the stator with liquid refrigerant may be provided by a similar technique. A noise suppression system is provided by injecting liquid refrigerant spray at points between the impeller and the condenser section. The liquid refrigerant may be sourced from high pressure liquid refrigerant from the condenser section.

    摘要翻译: 用于大型冷却装置的高效率,低维护性单级或多级离心式压缩机组件。 冷却系统通过将来自蒸发器部分的气体制冷剂与来自冷凝器部分的液体制冷剂组合来影响液体/蒸气制冷剂混合物,从而提供转子的直接两相冷却。 可以通过类似的技术来提供具有液体制冷剂的定子的冷却。 通过在叶轮和冷凝器部分之间的点喷射液体制冷剂喷雾来提供噪声抑制系统。 液体制冷剂可以来自冷凝器部分的高压液体制冷剂。

    Telescoping serial elastic band ligator
    7.
    发明授权
    Telescoping serial elastic band ligator 失效
    伸缩系列弹性带结扎器

    公开(公告)号:US5788715A

    公开(公告)日:1998-08-04

    申请号:US727489

    申请日:1997-05-08

    IPC分类号: A61B17/12 A61B17/04

    摘要: A ligating band dispenser has a plurality of elastic ligating bands at least one of which is supported on each of a series of partially nested cylinders. Inner and intermediate cylinders comprise axially sliding cylinders for dispensing the ligating bands. An outer cylinder,which may be attached to the distal end of an elongated introducer, surrounds at least the proximal portion of the intermediate cylinder and is adapted to receive the sliding cylinders slide into its distal end. A trip wire is connected to the inner cylinder and extends proximally therefrom through the elongated introducer. The trip wire is adapted to cause an axially sliding motion of the sliding cylinders during an application of force to the trip wire. A restraining means is associated with each sliding cylinder to restrain sliding motion thereof during the application of force to the trip wire. Finally, a releasing means is provided to release the restraining means associated with one of the sliding cylinders upon the application of the pulling force. The released sliding cylinder slides in response to the applied pulling force while a distal end of one of the intermediate and outer cylinders pushes the ligating band therefrom. According to this construction, at least two ligating bands may be independently dispensed onto tissue at one or more designated sites thereby accomplishing ligation thereof.

    摘要翻译: PCT No.PCT / US95 / 01611 Sec。 371日期:1997年5月8日 102(e)日期1997年5月8日PCT提交1995年2月7日PCT公布。 出版物WO96 / 24292 日期1996年8月15日连接带分配器具有多个弹性连接带,其中至少一个支撑在一系列部分嵌套的气缸中的每一个上。 内部和中间气缸包括用于分配结扎带的轴向滑动气缸。 可以附接到细长导引器的远端的外圆筒至少围绕中间圆筒的近端部分,并且适于容纳滑动滑动件进入其远端。 跳闸线连接到内筒并通过细长的导引器向近端延伸。 脱扣线适用于在对跳闸线施加力时引起滑动缸的轴向滑动运动。 限制装置与每个滑动缸相关联,以在对跳闸线施加力期间抑制其滑动运动。 最后,提供释放装置以在施加拉力时释放与滑动缸中的一个相关联的约束装置。 释放的滑动气缸响应于所施加的拉力滑动,而中间和外侧气缸之一的远端从其中推动结扎带。 根据这种结构,至少两个连接带可以独立地分配到一个或多个指定部位的组织上,从而完成其连接。

    Reciprocating serial transparent elastic band ligator
    9.
    发明授权
    Reciprocating serial transparent elastic band ligator 失效
    往复式串联透明弹性带结扎器

    公开(公告)号:US5681328A

    公开(公告)日:1997-10-28

    申请号:US700424

    申请日:1996-11-20

    IPC分类号: A61B17/00 A61B17/12

    摘要: A ligating band dispenser for dispensing a plurality of ligating bands having located at the distal end of an elongated introducer responds to manipulation of an operating structure at the proximal end of the introducer. It has a spring loaded reciprocating inner cylinder movable within a spring loaded, radially expandable cone having inner teeth for engaging a plurality of ligating bands. When the dispenser is actuated, the inner cylinder us drawn proximally with respect to the cone, and the distal end surface of the cone forces the distal-most ring off the reciprocating cylinder and onto the internal tissue has been drawn or place by the inside cylinder.

    摘要翻译: PCT No.PCT / US94 / 14796 Sec。 371日期1996年11月20日 102(e)日期1996年11月20日PCT 1994年12月20日PCT公布。 公开号WO96 / 19145 日期1996年6月27日用于分配位于细长导引器的远端处的多个结扎带的结扎带分配器响应导引器近端处的操作结构的操作。 它具有可弹簧加载的可径向扩张的锥体的弹簧加载的往复运动的内圆柱,其具有用于接合多个结扎带的内齿。 当分配器被致动时,内筒我们相对于锥体向近侧拉伸,并且锥体的远端表面迫使最远端的环离开往复缸,并且在内部组织上已被内筒抽出或放置 。