公开(公告)号：US20250052639A1

公开(公告)日：2025-02-13

申请号：US18797566

申请日：2024-08-08

Applicant: Karthik Udayakumar

Inventor： Karthik Udayakumar

IPC: G01M3/30

Abstract: Embodiments of the present invention provide a method for detecting and measuring seat leakage in valves during air or gas seat tests. The method involves sealing the valve openings and filling the cavity on one side of the closed valve with water. Pressurized air or gas is introduced to the opposite side of the valve, causing any leaks in the valve closure to generate bubbles that displace water through a conduit, forming drops that are collected in a container. The leakage is quantified by counting the drops or measuring the water volume in a graduated container.

公开(公告)号：US20210402498A1

公开(公告)日：2021-12-30

申请号：US17328197

申请日：2021-05-24

Applicant: SENJU METAL INDUSTRY CO., LTD.

Inventor： Tsutomu HIYAMA ,  Nobuhiro KOJIMA

IPC: B23K3/08 ,  B23K3/04 ,  G01M3/30

Abstract: Provided is a soldering apparatus including: a furnace body including a processing chamber in which boards are processed; a gasket provided at least to a part of the furnace body, and configured to seal the furnace body; a sealed space isolated from the processing chamber, and defined by the furnace body and the gasket; a gas supply apparatus configured to supply a first gas into the sealed space; and a measuring apparatus configured to measure one of pressure in the sealed space and concentration of a second gas in the sealed space.

公开(公告)号：US5445010A

公开(公告)日：1995-08-29

申请号：US275147

申请日：1994-07-14

Applicant: Clifford T. Peacock

Inventor： Clifford T. Peacock

IPC: G01M3/32 ,  G01M3/30 ,  G01N3/26

CPC classification number: G01M3/3245

Abstract: A test procedure for the testing liquid storage tanks, for leakage, comprises: immersing at least part of test equipment in the liquid in question and fixing the equipment in position with respect to the tank; allowing a quantity of the liquid in question to be admitted to a multiplier tube, until the level of liquid in the multiplier tube equates to that in the tank; isolating the liquid in the multiplier tube from that in the tank for an appropriate test period; introducing a predetermined measure (M) of liquid of the same nature as that in the tank into the test equipment to establish a recordable datum level removing the predetermined measure (M) of liquid from the test equipment; re-connecting the liquid in the multiplier tube with that in the tank; waiting a prescribed period of time; taking the same measure (M) of liquid and re-introducing this measured amount into the test equipment; and observing any fall of the meniscus of that measure from the previous datum level, which fall would indicate leakage from the tank. The invention also includes test equipment (9).

Abstract translation: 用于测试液体储存罐的渗漏的测试程序包括：将至少部分测试设备浸入所述液体中并将设备相对于罐固定; 允许一定量的液体进入乘法器管，直到乘法器管中的液体水平相当于储罐中的液体; 将倍增管中的液体与罐中的液体隔离适当的测试期; 将具有与罐中相同性质的液体的预定措施（M）引入测试设备中，以建立从测试设备中去除液体的预定措施（M）的可记录基准水平; 将倍增管中的液体重新连接到罐中; 等待规定的时间; 采取相同的测量（M）液体，并将该测量量重新引入测试设备; 并从以前的基准水平观察该措施的弯月面的任何下降，这将下降将指示来自罐的泄漏。 本发明还包括测试设备（9）。

公开(公告)号：US11788923B2

公开(公告)日：2023-10-17

申请号：US17444597

申请日：2021-08-06

Applicant: CHANGXIN MEMORY TECHNOLOGIES, INC.

Inventor： Zhipeng Gao

IPC: G01M3/30

CPC classification number: G01M3/30

Abstract: A method for detecting a gas tightness of a furnace tube device includes: providing a test wafer; conveying the test wafer into the furnace tube device; depositing a dielectric layer on the test wafer; measuring a thickness and a Goodness of Fit (GOF) of the dielectric layer formed on the test wafer by a thickness measuring machine; and judging the gas tightness of the furnace tube device according to the GOF.

公开(公告)号：US20220205864A1

公开(公告)日：2022-06-30

申请号：US17444597

申请日：2021-08-06

Applicant: CHANGXIN MEMORY TECHNOLOGIES, INC.

Inventor： Zhipeng GAO

IPC: G01M3/30

Abstract: A method for detecting a gas tightness of a furnace tube device includes: providing a test wafer; conveying the test wafer into the furnace tube device; depositing a dielectric layer on the test wafer; measuring a thickness and a Goodness of Fit (GOF) of the dielectric layer formed on the test wafer by a thickness measuring machine; and judging the gas tightness of the furnace tube device according to the GOF.

公开(公告)号：US09304056B2

公开(公告)日：2016-04-05

申请号：US13819061

申请日：2011-09-05

Applicant: Serge Albaladejo ,  Rémi Zanolin

Inventor： Serge Albaladejo ,  Rémi Zanolin

IPC: G01M3/30 ,  G01M3/40 ,  G01M3/16 ,  G01M3/18

CPC classification number: G01M3/40 ,  G01M3/165 ,  G01M3/18 ,  Y10T29/49947

Abstract: The invention relates in particular to a method of covering a duct for transporting or storing a fluid in a device for detecting a leak of the fluid, the device comprising a layer of insulating fibrous material arranged to surround the duct and a layer of conductive material that extends against the layer of insulating material, the conductive material being essentially constituted by fibers of carbon or graphite, wherein the layer of insulating material is secured to the wall of the duct by strapping ties around said layer.

Abstract translation: 本发明具体涉及一种覆盖用于在用于检测流体泄漏的装置中传送或存储流体的管道的方法，该装置包括布置成围绕管道的绝缘纤维材料层和导电材料层， 延伸抵靠绝缘材料层，导电材料基本上由碳或石墨的纤维构成，其中绝缘材料层通过围绕所述层绑扎固定在管道的壁上。

公开(公告)号：US5492004A

公开(公告)日：1996-02-20

申请号：US329737

申请日：1994-10-26

Applicant: Hans E. Berg ,  Lawrence E. Jordan

Inventor： Hans E. Berg ,  Lawrence E. Jordan

IPC: G01M3/22 ,  G01N33/00 ,  G01N33/18 ,  H02K9/24 ,  G01M3/30 ,  G01N31/00

CPC classification number: G01M3/228 ,  G01N33/005 ,  G01N33/18 ,  H02K9/24

Abstract: Hydrogen leakage from a generator core through stator windings into the generator coolant water is measured by flowing air into the coolant water exiting the stator windings and measuring the hydrogen content of the gas vented from a coolant water reservoir. The flow of air into the coolant water also oxygenates the coolant water to prevent undesirable formation of less stable cuprous oxide layers and enhance the formation of a protective cupric oxide film on the inside surfaces of the copper stator windings. In another form, trace gas is introduced into one of the generator core environment and the coolant water and a detector measures the magnitude of the trace gas leaked between the generator core environment and the coolant water as an indication of the magnitude of hydrogen leakage escaping from the generator core into the stator water coolant system.

Abstract translation: 通过将空气流入离开定子绕组的冷却水中并测量从冷却水储存器排出的气体的氢含量来测量从发生器芯通过定子绕组到发电机冷却水中的氢气泄漏。 进入冷却水的空气流还使冷却水充氧，以防止不希望形成较不稳定的氧化亚铜层，并增强在铜定子绕组的内表面上形成保护性氧化铜膜。 在另一种形式中，痕量气体被引入到发电机核心环境和冷却水之一中，并且检测器测量在发电机核心环境和冷却水之间泄漏的痕量气体的大小，作为从泄漏出来的氢气泄漏的大小的指示 发电机芯进入定子水冷却系统。

公开(公告)号：US4474054A

公开(公告)日：1984-10-02

申请号：US458349

申请日：1983-01-17

Applicant: John A. Ainlay

Inventor： John A. Ainlay

IPC: G01M3/32 ,  G01M3/30

CPC classification number: G01M3/3245

Abstract: A leak detector includes an air tight chamber having three openings therein. The first opening is connected to a source of compressed air or other gas. The second opening is provided to the fill pipe of a tank to be tested for leaks. The third opening is connected to a slope tube which is calibrated to detect changes in the height of a column of liquid in a slope tube. When pressure is applied to the chamber from the source of compressed air, bubbles are forced into the fill pipe. A corresponding pressure creates and maintains a column of liquid in the slope tube. Changes in the level of the fluid in the tank due to leakage result in a corresponding change in the level of fluid in the slope tube.

Abstract translation: 泄漏检测器包括其中具有三个开口的气密室。 第一开口连接到压缩空气源或其它气体。 将第二开口设置到要测试的泄漏罐的填充管。 第三个开口连接到一个倾斜管，该管被校准以检测斜管中液体柱的高度变化。 当从压缩空气源向室施加压力时，气泡被迫进入填充管。 相应的压力产生并保持斜坡管中的一列液体。 由于泄漏导致的槽内液体的变化导致倾斜管中流体水平的相应变化。

公开(公告)号：US11819952B2

公开(公告)日：2023-11-21

申请号：US17328197

申请日：2021-05-24

Applicant: SENJU METAL INDUSTRY CO., LTD.

Inventor： Tsutomu Hiyama ,  Nobuhiro Kojima

IPC: B23K3/08 ,  B23K3/04 ,  G01M3/30 ,  B23K101/42

CPC classification number: B23K3/08 ,  B23K3/04 ,  G01M3/30 ,  B23K2101/42

Abstract: Provided is a soldering apparatus including: a furnace body including a processing chamber in which boards are processed; a gasket provided at least to a part of the furnace body, and configured to seal the furnace body; a sealed space isolated from the processing chamber, and defined by the furnace body and the gasket; a gas supply apparatus configured to supply a first gas into the sealed space; and a measuring apparatus configured to measure one of pressure in the sealed space and concentration of a second gas in the sealed space.

公开(公告)号：US10563784B2

公开(公告)日：2020-02-18

申请号：US15409316

申请日：2017-01-18

Applicant: Eaton Intelligent Power Limited

Inventor： Vishal Pramod Mande ,  Aniket Pravin Pataskar ,  Ashwin Mrityunjayagoud Patil ,  Barry Benaway

IPC: F16K24/04 ,  F16K37/00 ,  G01M3/30 ,  G01M3/28

Abstract: Aspects and techniques of the present disclosure relate to a process of evaluating a pressurized fluid system including an automatic bleed valve arrangement therein for undesirable air leakage by diagnostically operating the automatic bleed valve arrangement. The disclosure also relates to methods of evaluating air presence in a pressurized fluid system sufficient to warrant bleed valve operation. Further, apparatus and features thereof are characterized.