公开(公告)号：US6014892A

公开(公告)日：2000-01-18

申请号：US53769

申请日：1998-04-02

申请人： Gilles Baret ,  Roland Gevaud ,  Alain Devance

发明人： Gilles Baret ,  Roland Gevaud ,  Alain Devance

IPC分类号： G01M3/20

CPC分类号： G01M3/202

摘要： A tracer gas leak detector that analyzes a test gas for presence of a tracer gas therein, including at least one gas analyzer, a secondary pump whose suction inlet is connected to the gas analyzer, a primary pump connected to the secondary pump outlet via a first pipe fitted with a first valve, and a second pipe connecting the first pipe from a point situated between the first valve and the primary pump to an inlet of the detector for connection to an enclosure via a pre-evacuated flow and said gas analyzer receiving said test gas from a part of said pre-evacuated flow, the second pipe being fitted with a second valve, the primary pump serving to pre-evacuate the enclosure, wherein a sampling member for sampling the flow travelling along the second pipe is situated directly on the wall of the second pipe in direct contact with the flow and is connected via a duct directly to the analyzer, the sampling member having flow conductance enabling the pressure in the duct to be compatible with operation of the gas analyzer while the second pipe is at a pressure greater than 10 mbar.

摘要翻译： 一种示踪气体泄漏检测器，其分析其中示踪气体的存在的测试气体，包括至少一个气体分析器，其吸入口连接到气体分析器的次级泵，经由第一泵连接到次级泵出口的主泵 配有第一阀的管，以及将第一管从位于第一阀和主泵之间的点连接到检测器的入口的第二管，用于经由预抽空流连接到外壳，并且所述气体分析器接收所述 从所述预抽空流的一部分测试气体，所述第二管装配有第二阀，所述主泵用于预抽空所述外壳，其中用于对沿着所述第二管行进的流进行取样的取样构件直接位于 第二管的壁与流体直接接触并通过管道直接连接到分析器，采样构件具有使导管中的压力能够相容的流动导通 在第二管道处于大于10毫巴的压力下，气体分析器的h运行。

公开(公告)号：US06282946B1

公开(公告)日：2001-09-04

申请号：US08568285

申请日：1995-12-06

申请人： Roland Gevaud ,  Gilles Baret

发明人： Roland Gevaud ,  Gilles Baret

IPC分类号： G01M320

CPC分类号： G01M3/202 ,  G01M3/205

摘要： A leak detector including at least one analysis unit connected to the inlet of a first secondary pump, a pre-evacuation set connected to an inlet coupling, the inlet of said pre-evacuation set further being connected to the outlet of said first secondary pump via a pipe provided with a first valve, wherein said pre-evacuation set comprises a second secondary pump and a mechanical primary pump connected together in series, and wherein a pipe provided with a second valve connects an intermediate point of said first secondary pump to the inlet of said second secondary pump.

摘要翻译： 一种泄漏检测器，包括连接到第一次级泵的入口的至少一个分析单元，连接到入口联接器的预抽空组件，所述预抽真空组件的入口还通过所述第一辅助泵的出口连接到所述第一辅助泵的出口 具有第一阀的管，其中所述预排气组包括串联连接在一起的第二副泵和机械主泵，并且其中设置有第二阀的管将所述第一副泵的中间点连接到所述入口 的所述第二次级泵。

公开(公告)号：US5341671A

公开(公告)日：1994-08-30

申请号：US949155

申请日：1992-09-23

申请人： Gilles Baret ,  Roland Gevaud

发明人： Gilles Baret ,  Roland Gevaud

IPC分类号： G01M3/20

CPC分类号： G01M3/202

摘要： A helium leak detector includes a gas analyzer and a secondary pump having at least on its discharge side a Holweck type stage. The pump is of a type enabling the suction pressure to be reduced to a value at least equal to 10.sup.-4 mbar and a discharge pressure which is sufficiently high to be compatible with the suction pressure of a dry primary pump having at least two stages. The secondary pump is connected to the low-pressure output of a sampling unit on an intermediate point of the secondary pump where the flow conditions are molecular. A sniffer probe is connected to the high-pressure side of the sampling unit. This high-pressure side is further connected to the dry primary pump between its at least two stages.

摘要翻译： 氦气泄漏检测器包括气体分析器和次级泵，其至少在其排放侧具有Holweck型级。 该泵是使吸入压力降至至少等于10-4毫巴的值，并且排出压力足够高以与具有至少两级的干式主泵的吸入压力相适应。 次级泵连接到二级泵的中间点上的采样单元的低压输出，其中流动条件是分子式的。 嗅探器探头连接到采样单元的高压侧。 该高压侧在其至少两个级之间进一步连接到干式主泵。

公开(公告)号：US5297422A

公开(公告)日：1994-03-29

申请号：US950276

申请日：1992-09-24

申请人： Gilles Baret

发明人： Gilles Baret

IPC分类号： G01M3/20

CPC分类号： G01M3/202

摘要： A tracer-gas leak detector includes an analysis unit and a primary pump whose inlet is connected to an inlet orifice of the detector via a first pipe equipped with a first valve. A secondary pumping set has an inlet connected to the analysis unit and an outlet connected to the inlet of the primary pump. The primary pump is a dry pump. The secondary pumping set includes two secondary pumps of the mechanical type separated from each other by a second valve. The secondary pump that is proximate to the dry primary pump is the second secondary pump and includes a dynamic seal stage at its outlet. A second pipe connects the inlet of the second secondary pump to the first pipe downstream from the second valve. A third valve is disposed on the first pipe between the outlet of the second secondary pump and the junction where the second pipe meets the first pipe. The third valve is controlled by a pressure sensor placed at the inlet of the second secondary pump.

摘要翻译： 示踪气体泄漏检测器包括分析单元和主泵，其入口经由配备有第一阀的第一管连接到检测器的入口孔。 辅助泵送装置具有连接到分析单元的入口和连接到主泵的入口的出口。 主泵是干泵。 次级泵送装置包括通过第二阀彼此分离的两个机械类型的二级泵。 靠近干式主泵的次级泵是第二副泵，并且在其出口处包括动态密封级。 第二管将第二辅助泵的入口连接到第二阀的下游的第一管。 第三阀设置在第二管路的出口与第二管道与第一管道相接合的第一管道上。 第三阀由位于第二副泵入口处的压力传感器控制。

公开(公告)号：US06336356B1

公开(公告)日：2002-01-08

申请号：US09409342

申请日：1999-09-30

申请人： Jean Marc Paquet ,  Gilles Baret

发明人： Jean Marc Paquet ,  Gilles Baret

IPC分类号： G01M304

CPC分类号： G01M3/205 ,  G01M3/207

摘要： The invention relates to a leak detector comprising a primary pump unit, a secondary pump unit having at least one secondary pump, a gas analyzer, a test module, a calibration module, a delivery module of the secondary pump unit, valves, and link segments. In the invention the leak detector includes a one-piece main block provided with spaces making it possible to integrate at least some of the component elements of the leak detector.

摘要翻译： 本发明涉及一种泄漏检测器，其包括主泵单元，具有至少一个次级泵的二次泵单元，气体分析器，测试模块，校准模块，次级泵单元的输送模块，阀和连杆段 。 在本发明中，泄漏检测器包括具有空间的一体式主块，使得能够集成检漏器的至少一部分元件。

公开(公告)号：US5226314A

公开(公告)日：1993-07-13

申请号：US775757

申请日：1991-10-15

申请人： Gilles Baret

发明人： Gilles Baret

IPC分类号： G01M3/20

CPC分类号： G01M3/202

摘要： The invention provides a tracer-gas leak detector including a secondary pumping set, a sole primary pumping set, a mass spectrometer connected to the inlet of the secondary pumping set, the outlet of the secondary pumping set being connected to the inlet of the primary pumping set by means of a duct equipped with an electromagnetic valve, and at least one pipe connecting a coupling for connection to an enclosure to be tested to the secondary pumping set, said pipe being equipped with a pneumatic valve which is opened by suction, wherein a buffer volume is connected both to a suction inlet of the primary pumping set by a link duct equipped with a first electrically actuated valve, and also to said pneumatic valve by a control duct equipped with a second electrically actuated valve.

摘要翻译： 本发明提供了一种示踪气体泄漏检测器，其包括辅助泵送装置，唯一初级泵送装置，连接到次级泵送装置的入口的质谱仪，次级泵送装置的出口连接到初级泵送 通过装备有电磁阀的管道设置的至少一个管道，以及至少一个管道，其连接用于连接到待测试的外壳的联接器到次级泵送装置，所述管道配备有通过抽吸打开的气动阀，其中 缓冲体积通过配备有第一电致动阀的连接管连接到主泵组的吸入口，并且还通过配备有第二电致动阀的控制管连接到所述气动阀。

公开(公告)号：US5115667A

公开(公告)日：1992-05-26

申请号：US535621

申请日：1990-06-11

申请人： Gilles Baret

发明人： Gilles Baret

IPC分类号： G01T1/28 ,  H01J43/30 ,  H01J49/02

CPC分类号： H01J49/022 ,  G01T1/28 ,  H01J43/246 ,  H01J43/30

摘要： The present invention relates to a circuit for processing a signal received by an electron multiplier. The circuit comprises an electron multiplier followed by an electron collector, a power supply for the electron multiplier, a gain-compressing amplifier for processing the signal delivered by the electron collector, and a feedback path for continuously modulating the gain of the electron multiplier by means of a control circuit which acts on the HT power supply of the electron multiplier. This circuit is particularly suitable for use in mass spectrometry and in helium leak detection.

摘要翻译： 本发明涉及一种用于处理由电子倍增器接收的信号的电路。 该电路包括电子倍增器，随后是电子收集器，用于电子倍增器的电源，用于处理由电子收集器传送的信号的增益压缩放大器，以及用于通过装置连续调制电子倍增器的增益的反馈路径 作用于电子倍增器的HT电源的控制电路。 该电路特别适用于质谱和氦泄漏检测。

公开(公告)号：US5107697A

公开(公告)日：1992-04-28

申请号：US600936

申请日：1990-10-22

申请人： Jacques Tallon ,  Gilles Baret

发明人： Jacques Tallon ,  Gilles Baret

IPC分类号： G01M3/02 ,  G01M3/20

CPC分类号： G01M3/202

摘要： A tracer gas leak detection system for: a first duct provided with a pre-evacuation valve, enabling a test chamber to be connected to the suction of a pre-evacuation pump. A gas analyzer is connected to the suction of a mechanical secondary pump whose delivery is connected by a second duct to a primary pump. At least one connection is provided with an inlet valve connecting of the text chamber to the mechanical secondary pump and the system further includes a second mechanical secondary pump situated on the first duct downstream from the pre-evacuation valve.

摘要翻译： 一种示踪气体泄漏检测系统，用于：具有预抽空阀的第一管道，使得测试室能够连接到预抽空泵的吸力。 气体分析器连接到机械二次泵的抽吸器，其输送通过第二管道连接到主泵。 至少一个连接件具有将文本室连接到机械辅助泵的入口阀，并且系统还包括位于预排气阀下游的第一管道上的第二机械辅助泵。

公开(公告)号：US5181414A

公开(公告)日：1993-01-26

申请号：US750999

申请日：1991-08-28

申请人： Gilles Baret ,  Jean-Pierre Chicherie ,  Jean-Marc Paquet

发明人： Gilles Baret ,  Jean-Pierre Chicherie ,  Jean-Marc Paquet

IPC分类号： F04C25/02 ,  F04C28/28 ,  G01M3/20

CPC分类号： F04C28/28 ,  G01M3/205

摘要： A pumping apparatus for pumping a gas having application to helium leak detectors has a vane and oil-seal type vacuum pump immersed in a closed tank (9) partially filled with oil (10). The apparatus also includes an oil pump (20) for renewing the oil seal located inside the tank. The oil pump is equipped with a noise-reducing mixing device enabling the oil for constituting the oil seal to be mixed with a noise-reducing gas. The noise-reducing gas is fed from the outside of the tank to the mixing device by means of a pipe (24) passing through the wall of the tank and opening via a Venturi tube to the suction duct of the immersed oil pump.

摘要翻译： 用于泵送应用于氦泄漏检测器的气体的泵送装置具有浸入部分填充有油（10）的封闭罐（9）中的叶片和油封型真空泵。 该装置还包括用于更新位于罐内的油封的油泵（20）。 油泵配备有减噪混合装置，使得用于构成油封的油与降噪气体混合。 降噪气体通过管道（24）从罐外部供给到混合装置，并通过文丘里管打开，经过浸入式油泵的吸入管道。

公开(公告)号：US5116196A

公开(公告)日：1992-05-26

申请号：US550403

申请日：1990-07-10

申请人： Gilles Baret ,  Denis Perrillat-Amede

发明人： Gilles Baret ,  Denis Perrillat-Amede

IPC分类号： F04D19/04 ,  G01M3/20

CPC分类号： G01M3/205 ,  F04D19/044 ,  G01M3/202

摘要： A mechanical pump assembly (20) for pumping a secondary vacuum, the assembly comprising two pumping stages, the first stage having a suction inlet (9) and the second stage having a suction orifice (10), said inlet and said orifice both opening out to the outside, both stages having a common delivery outlet (4), the pump assembly being characterized in that both of said pumping stages are of the Holweck drum type, said first stage having a compression ratio of about 50 for a gas such as helium and of about 30,000 for air, the pumping speed of the first stage being about 4 l/s for air and about 2.5 l/s for said gas, and in that said second stage has a pumping speed of about 3.5 l/s for air and of about 2 l/s for said gas, the nominal speed of rotation of said mechanical pump assembly being about 27,000 rpm.

摘要翻译： 一种用于泵送二次真空的机械泵组件（20），所述组件包括两个泵送阶段，所述第一阶段具有吸入口（9），所述第二阶段具有吸入口（10），所述入口和所述孔口均打开 在两个阶段之间具有共同的输送出口（4），所述泵组件的特征在于两个所述泵送阶段均为Holweck滚筒式，所述第一阶段对于诸如氦气之类的气体具有约50的压缩比 对于空气为约30,000，第一级的泵送速度对于空气为约4l / s，对于所述气体为约2.5l / s，并且所述第二级的空气的抽速为约3.5l / s 并且对于所述气体为约2l / s，所述机械泵组件的标称转速为约27,000rpm。