WO2021144140A1 - Prüfgasapplikator - Google Patents

Prüfgasapplikator Download PDF

Info

Publication number
WO2021144140A1
WO2021144140A1 PCT/EP2020/088047 EP2020088047W WO2021144140A1 WO 2021144140 A1 WO2021144140 A1 WO 2021144140A1 EP 2020088047 W EP2020088047 W EP 2020088047W WO 2021144140 A1 WO2021144140 A1 WO 2021144140A1
Authority
WO
WIPO (PCT)
Prior art keywords
test gas
applicator
test
housing
membrane material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2020/088047
Other languages
German (de)
English (en)
French (fr)
Inventor
Silvio Decker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inficon GmbH Deutschland
Original Assignee
Inficon GmbH Deutschland
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Inficon GmbH Deutschland filed Critical Inficon GmbH Deutschland
Priority to CN202080091964.5A priority Critical patent/CN114945811B/zh
Priority to JP2022543128A priority patent/JP7595078B2/ja
Priority to KR1020227019020A priority patent/KR102965768B1/ko
Priority to US17/780,897 priority patent/US20230020261A1/en
Priority to EP20839363.7A priority patent/EP4090929B1/de
Publication of WO2021144140A1 publication Critical patent/WO2021144140A1/de
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/007—Leak detector calibration, standard leaks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/207—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material calibration arrangements

Definitions

  • the invention relates to a test gas applicator for administering test gas to a test object to be tested for leaks.
  • test items are examined for gas tightness. It is known to introduce a test gas, such as helium or hydrogen, into the external environment of the test object while the test object is evacuated and the gas extracted from the test object is examined for the presence of test gas. If the gas extracted from the test item contains test gas, this serves as an indication of the presence of a leak.
  • a test gas such as helium or hydrogen
  • the test gas is typically taken from a pressure container and administered to the external environment of the test object with the aid of a spray gun.
  • the disadvantage here is that the test gas supply has to be filled under pressure and, when the test gas is administered, usually more test gas than necessary is administered. In addition, an excessively large test gas cloud in the test object environment makes it difficult to locate a leak.
  • the invention is based on the object of providing an improved test gas applicator.
  • test gas applicator according to the invention is defined by the features of claim 1.
  • test gas volume is surrounded by a housing which has a test gas outlet which connects the test gas volume with the atmosphere of the test gas applicator surrounding the housing.
  • the test gas outlet has a membrane material such that the test gas diffuses through the membrane material and / or permeates from it.
  • test gas can be applied from the test gas volume without the test gas in the housing being pressurized with respect to the external atmosphere.
  • Complex pressure reducing technology can be dispensed with. Due to the principle of diffusion / permeation of the test gas, a small amount of the test gas flows continuously out of the test gas applicator, so that the test gas concentration is only increased in the direct vicinity of the test gas outlet. The test gas applicator can be guided along the test object in order to detect the leak.
  • the test gas outlet can be closed with a cap.
  • the housing can be designed cylindrically in the manner of a pin, the test gas outlet being designed concentrically in the region of a distal end of the housing.
  • a filling valve can be provided on the side opposite the test gas outlet.
  • the housing can, for example, have a pressure relief valve in the area of its lateral surface in order to ensure that the test gas within the housing is only at atmospheric pressure.
  • the test gas can advantageously be helium.
  • the membrane material is designed so that the test gas diffuses through without a pressure difference prevailing between the interior of the housing and the atmosphere surrounding the test gas applicator.
  • the membrane material can be an open-pored felt material.
  • the test gas applicator can be designed in the manner of a felt-tip pen. Test gas can pass through the pores of the felt material by diffusion.
  • the membrane material can alternatively be a pore-free, closed material, for example a silicone material, through which the test gas can pass by permeation.
  • the figure shows a longitudinal section through the test gas applicator.
  • the test gas applicator 10 has a cylindrical housing 12 which completely surrounds a test gas volume 14 on the outside.
  • An overpressure valve 16 is formed in an outer jacket surface of the housing 12, which makes it possible that when the test gas applicator 10 is filled with test gas, a pressure within the housing 12 of more than 110% of atmospheric pressure is not exceeded.
  • a rear, proximal end face 18 of the housing 12 has a filling valve 20.
  • the distal end face 22 of the housing 12 opposite the proximal end face 18 has a test gas outlet 24 in the form of a cylindrical opening 26.
  • a membrane material 28 is introduced into the cylindrical opening 26, which is designed such that the test gas diffuses through the membrane material 28 and / or permeates from it. The test gas passes completely through the membrane material 28 exclusively by diffusion. A pressure difference on the opposite sides of the membrane material 28 is not necessary for this.
  • the membrane material 28 is a felt material which is in the form of a cartridge pressed into a cylindrical shape.
  • a cylindrical closure cap 30 is designed to be pushed onto the distal end of the housing 12 in a gas-tight manner in such a way that no test gas from the test gas volume 14 reaches the outer surroundings of the closure cap 30.
  • test gas volume 14 is filled with test gas in the form of helium via the filling valve 20.
  • the pressure relief valve 16 prevents the pressure inside the housing 12 from 110% of the atmospheric pressure in the outer
  • the sealing cap 30 can be removed to introduce the test gas into the external environment of the test object to be examined, whereby the test gas diffuses from the test gas volume 14 through the membrane material 28 and the test gas outlet 24.
  • the tip 32 of the test gas applicator 10 can be guided over the surface of the test piece so that when the test gas proportion increases in the gas sucked out of the test piece, the tip 32 of the test gas applicator 10 is located in the area of the leak of the test piece. Typically, the distal tip 32 then points towards the leak. A leak can thus be localized in a particularly simple manner.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
PCT/EP2020/088047 2020-01-15 2020-12-30 Prüfgasapplikator Ceased WO2021144140A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN202080091964.5A CN114945811B (zh) 2020-01-15 2020-12-30 测试气体施加器
JP2022543128A JP7595078B2 (ja) 2020-01-15 2020-12-30 試験ガスアプリケータ
KR1020227019020A KR102965768B1 (ko) 2020-01-15 2020-12-30 시험 가스 어플리케이터
US17/780,897 US20230020261A1 (en) 2020-01-15 2020-12-30 Test gas applicator
EP20839363.7A EP4090929B1 (de) 2020-01-15 2020-12-30 Prüfgasapplikator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020100830.9 2020-01-15
DE102020100830.9A DE102020100830A1 (de) 2020-01-15 2020-01-15 Prüfgasapplikator

Publications (1)

Publication Number Publication Date
WO2021144140A1 true WO2021144140A1 (de) 2021-07-22

Family

ID=74181175

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/088047 Ceased WO2021144140A1 (de) 2020-01-15 2020-12-30 Prüfgasapplikator

Country Status (7)

Country Link
US (1) US20230020261A1 (enExample)
EP (1) EP4090929B1 (enExample)
JP (1) JP7595078B2 (enExample)
CN (1) CN114945811B (enExample)
DE (1) DE102020100830A1 (enExample)
TW (1) TWI879869B (enExample)
WO (1) WO2021144140A1 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116337356A (zh) * 2023-03-17 2023-06-27 宁波水表(集团)股份有限公司 一种水表封装氦气的方法、装置以及水表

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209579A (en) * 1961-12-28 1965-10-05 Gen Electric Gas reference leak for leak detector equipment
DE202010003426U1 (de) * 2010-03-11 2011-08-02 Inficon Gmbh Prüfleck
US20160146694A1 (en) * 2013-08-02 2016-05-26 Inficon Gmbh Test Leak Device Having Integrated Pressure Sensor
US20160195448A1 (en) * 2013-08-20 2016-07-07 Inficon Gmbh Pico Test Leak

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5998342U (ja) * 1982-12-21 1984-07-03 昭和電線電纜株式会社 標準リ−ク
JP3064194B2 (ja) * 1995-02-08 2000-07-12 矢崎総業株式会社 ガス漏れ警報器用点検装置
DE29810978U1 (de) * 1998-06-19 1998-10-01 Institut für Luft- und Kältetechnik Gemeinnützige Gesellschaft mbH, 01309 Dresden Prüfleck
DE10122733A1 (de) * 2001-05-10 2002-11-14 Inficon Gmbh Testleckvorrichtung
DE10162126A1 (de) * 2001-12-18 2003-07-03 Inficon Gmbh Gasdurchlass mit selektiv wirkenden Gasdurchtrittsflächen
US8881576B2 (en) * 2010-04-09 2014-11-11 Inficon Gmbh Test device for performing leak detection at a plurality of test sites
DE102013114441B4 (de) * 2013-12-19 2016-02-04 Institut Für Luft- Und Kältetechnik Gemeinnützige Gmbh Prüfleck und Verfahren zu dessen Herstellung
EP3690419B1 (en) * 2019-02-01 2021-11-03 Sartorius Stedim Fmt Sas System and method for detecting a possible loss of integrity of a flexible bag for biopharmaceutical product

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209579A (en) * 1961-12-28 1965-10-05 Gen Electric Gas reference leak for leak detector equipment
DE202010003426U1 (de) * 2010-03-11 2011-08-02 Inficon Gmbh Prüfleck
US20160146694A1 (en) * 2013-08-02 2016-05-26 Inficon Gmbh Test Leak Device Having Integrated Pressure Sensor
US20160195448A1 (en) * 2013-08-20 2016-07-07 Inficon Gmbh Pico Test Leak

Also Published As

Publication number Publication date
EP4090929A1 (de) 2022-11-23
EP4090929B1 (de) 2024-02-14
US20230020261A1 (en) 2023-01-19
DE102020100830A1 (de) 2021-07-15
JP2023510890A (ja) 2023-03-15
JP7595078B2 (ja) 2024-12-05
CN114945811B (zh) 2026-03-06
CN114945811A (zh) 2022-08-26
KR20220123382A (ko) 2022-09-06
TWI879869B (zh) 2025-04-11
TW202136731A (zh) 2021-10-01

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