CN2171861Y - Cutting ferrule joint type standard hole - Google Patents
Cutting ferrule joint type standard hole Download PDFInfo
- Publication number
- CN2171861Y CN2171861Y CN 93224861 CN93224861U CN2171861Y CN 2171861 Y CN2171861 Y CN 2171861Y CN 93224861 CN93224861 CN 93224861 CN 93224861 U CN93224861 U CN 93224861U CN 2171861 Y CN2171861 Y CN 2171861Y
- Authority
- CN
- China
- Prior art keywords
- utility
- model
- cutting ferrule
- main part
- tapered tube
- 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.)
- Expired - Fee Related
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The utility model belongs to the technical field of standard leakage hole structure design, the body part of the leakage hole is composed of a body (with a tapered tube), a cone plunger and cutting sleeve nuts. The utility model is connected as integration with a modular connector, and the leakage rate of the utility model can be adjusted by cutting sleeve nuts when needs to be checked. The utility model can be used in various technical fields, such as checking the performance index of leak detectors and mass spectrometers, and the utility model can also lead the gas part which is higher than an analyzer work pressure to an analyzer for analyzing gas composition and controlling production process. The utility model has the advantages of simple processing, adjustable leakage rate and high pressure proofing, and the utility model can be used for baking and detachable cleaning.
Description
The utility model belongs to referance leak structure-design technique field.
Referance leak is given in the leak rate under the standard conditions.It can be applicable to the multiple technologies field, can be used to edit the performance index of instruments such as leak locator and mass spectrograph, be one of indispensable parts of mass-spectrometer leak detector, also can guide to the gas source portion gas that is higher than the analyzer operating pressure in the analyzer and analyze, provide gas componant or carry out the control of production run.
Developed polytype referance leak both at home and abroad, its structure is formed by the main part and input and output joint three parts of small opening.The main part of small opening has determined the pattern of small opening, and they have pinhole type, capillary type, quartz to ooze helium type, platinum filament--glass mould, stainless steel slug type, metal flattening type and radiation line style.In order to obtain littler leak rate, there is the people that the copper pipe of little caliber is driven away and is extruded into more tubule footpath kapillary; Heavy metal film reduces its aperture in the zone of laser boring, can obtain 1 * 10 like this
-8Pam
3The leak rate of/s.
Wayward in the mill its leak rate of above-mentioned small opening majority is made the back and just can not be regulated its leak rate again, can only select the small opening near required leak rate in many small openings.Their majorities can not be used for tens atmospheric environment.
The purpose of this utility model is the fault that overcomes above-mentioned small opening, designs a kind of referance leak of new structure, makes it not only have handling ease, and leak rate can be set up as required, and advantage such as can work under very wide pressure limit.
The utility model is designed a kind of cutting ferrule joint referance leak, form by main part and shank, it is characterized in that said main part by the cutting ferrule spiral shell nurse of being with tapered tube, the cone plug that matches with it and being used to set up the gap between said tapered tube and the cone plug, said main part and shank are connected as a single entity by O-ring seal.
The utility model can be set up its leak rate as required when editing, can take apart easily and clean and set up, and its structure thermal stability is good, can be under very wide pressure limit operate as normal.
Brief Description Of Drawings:
Fig. 1 designs a kind of cutting ferrule joint-type referance leak example structure synoptic diagram for this use utility model.
The utility model is designed a kind of cutting ferrule joint-type referance leak embodiment, and its structure as shown in Figure 1.Be made of main part and modular connection, the main part of small opening is made up of band tapered tube 11 cone plugs 14 and cutting ferrule spiral shell nurse 15.Band tapered tube outer wall has external thread, and cutting ferrule spiral shell nurse 15 is pressed into cone plug 14 in the tapered tube.Modular connection 16 is for having the sleeve pipe of flange, and it is enclosed within outside the cutting ferrule spiral shell nurse 15, and reticulate pattern nut 17 is connected as a single entity modular connection and small opening main part.This small opening can be connected easily with by check system by the modular connection flange.When calibration, set up crack between cone and the tapered tube with cutting ferrule spiral shell nurse, obtain desired leak rate.Present embodiment can be made by stainless steel.
The leak rate of this small opening under providing standard conditions, also can be given to the relation curve of leak rate and air pressure under tens atmospheric pressure.This small opening can be transferred to than 1 * 10 under standard conditions
-8Pam
3The leak rate of little 1～2 order of magnitude of/s.
Claims (1)
1, a kind of cutting ferrule joint referance leak, form by main part and shank, it is characterized in that said main part by the cutting ferrule spiral shell nurse of being with tapered tube, the cone plug that matches with it and being used to set up the gap between said tapered tube and the cone plug, said main part and shank are connected as a single entity by O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93224861 CN2171861Y (en) | 1993-09-24 | 1993-09-24 | Cutting ferrule joint type standard hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93224861 CN2171861Y (en) | 1993-09-24 | 1993-09-24 | Cutting ferrule joint type standard hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2171861Y true CN2171861Y (en) | 1994-07-13 |
Family
ID=33802780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93224861 Expired - Fee Related CN2171861Y (en) | 1993-09-24 | 1993-09-24 | Cutting ferrule joint type standard hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2171861Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738038A (en) * | 2016-01-29 | 2016-07-06 | 合肥工业大学 | Molecular flow standard leak hole and manufacturing method thereof |
| CN109186864A (en) * | 2018-08-15 | 2019-01-11 | 北京卫星环境工程研究所 | Minimum leak rate vacuum standard leak hole |
-
1993
- 1993-09-24 CN CN 93224861 patent/CN2171861Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738038A (en) * | 2016-01-29 | 2016-07-06 | 合肥工业大学 | Molecular flow standard leak hole and manufacturing method thereof |
| CN105738038B (en) * | 2016-01-29 | 2018-05-18 | 合肥工业大学 | A kind of molecular flow referance leak and preparation method thereof |
| CN109186864A (en) * | 2018-08-15 | 2019-01-11 | 北京卫星环境工程研究所 | Minimum leak rate vacuum standard leak hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |