CN207832385U - A kind of channel-type the Calibration Apparatus of A Standard Leak - Google Patents
A kind of channel-type the Calibration Apparatus of A Standard Leak Download PDFInfo
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- CN207832385U CN207832385U CN201820070881.8U CN201820070881U CN207832385U CN 207832385 U CN207832385 U CN 207832385U CN 201820070881 U CN201820070881 U CN 201820070881U CN 207832385 U CN207832385 U CN 207832385U
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Abstract
The utility model proposes a kind of channel-type the Calibration Apparatus of A Standard Leak, including：Compressed air source unit, control air source equipment, digital pressure gauge and soap film flowmeter, wherein, the compressed air source unit, control air source equipment, digital pressure gauge and valve are sequentially connected, one end of the valve is connect with the digital pressure gauge, the other end of the valve is connect with by the side of leak hunting aperture, the other side by leak hunting aperture is connect with the soap film flowmeter, is hunted leak by leak hunting aperture to described in the form of by soap film flowmeter use spray bubble.The utility model has that at low cost, uncertainty is small, high degree of automation, simple operation and other advantages, easy to spread.
Description
Technical field
The utility model is related to air machinery technical field, more particularly to a kind of channel-type the Calibration Apparatus of A Standard Leak.
Background technology
Referance leak is exactly the leakage hole for having under certain condition known leak rate, is divided into vacuum standard leakage hole and positive pressure standard
Leakage hole can be applied to correction leak detector, the minimum detectable leak rate for detecting leak detector, formulate the fields such as the exposure standards of workpiece.
Vacuum leak is search gas (helium) to vacuum leak, and positive pressure leak hole is search gas by one end higher than an atmospheric pressure
It is leaked into air.Positive pressure leak detection instrument at present, easy to operate with its, portable, the leak detection advantages such as at low cost, space flight and aviation,
The industries such as nuclear industry, refrigeration, machinery, automobile making are widely adopted.
Channel-type referance leak be it is a kind of under prescribed conditions, provide known gas to atmosphere end (or inside vacuum system)
The standard of measurement of flow is mainly used to calibrate airtight leak detector and examines whether the instrument works normally.Airtight leak detector
It is widely used in having seal request in the industries such as automobile, Gas appliance, natural gas transportation pipeline, medical instrument, hygienically packaged
The leak detection of workpiece or system, especially automobile industry and gas industry, there have to the permission leakage rate of each parts to be fixed
Amount requires, and with the quickening of modernization of industry process, different types of airtight leak detector is widely used, accordingly therewith
Mating channel-type referance leak is also increasing, and channel-type referance leak does not have corresponding calibrating installation at present, traces back to user
Source brings difficulty.
Utility model content
The purpose of this utility model aims to solve at least one of described technological deficiency.
For this purpose, the purpose of this utility model is that proposing a kind of channel-type the Calibration Apparatus of A Standard Leak.
To achieve the goals above, the embodiments of the present invention provide a kind of channel-type the Calibration Apparatus of A Standard Leak, packet
It includes：Compressed air source unit, control air source equipment, digital pressure gauge and soap film flowmeter, wherein the compressed air source unit, air source control dress
Set, digital pressure gauge and valve are sequentially connected, one end of the valve is connect with the digital pressure gauge, the valve it is another
End is connect with by the side of leak hunting aperture, and the other side by leak hunting aperture is connect with the soap film flowmeter, with by the soap-film
Flowmeter is hunted leak to described by leak hunting aperture using spray bubble form.
Further, the control air source equipment uses pressure reducing valve.
Further, the soap film flowmeter with it is described by leak hunting aperture using quick adapter respectively with the valve and described
Soap film flowmeter connects.
Further, the compressed air source unit stores air source using steel cylinder.
Further, the control air source equipment uses pressure controller.
According to the channel-type the Calibration Apparatus of A Standard Leak of the utility model embodiment, it is possible to provide different gas type, can
The soap film flowmeter of the normal pressure of tune, different ranges, device parameter meet《Channel-type referance leak calibrating standard》Requirement,
It is easy to spread at low cost, uncertainty is small, high degree of automation, simple operation and other advantages.The utility model is estimated annual
Considerable income can be brought, and can be improved and upgrade on this basis, the calibration for widening referance leak can be continued
The economic benefit of bigger is brought in field.
The additional aspect of the utility model and advantage will be set forth in part in the description, partly will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment
Become apparent and is readily appreciated that, wherein：
Fig. 1 is the structure chart according to the channel-type the Calibration Apparatus of A Standard Leak of the utility model embodiment.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
The utility model proposes a kind of channel-type the Calibration Apparatus of A Standard Leak, including digital pressure gauge group, soap film flowmeter
Group, bleed pressure control device and other equipment can select different soap-film stream according to the referance leak of different leak rates
Gauge.
As shown in Figure 1, the channel-type the Calibration Apparatus of A Standard Leak of the utility model embodiment, including：Compressed air source unit 1, gas
Source control device 2, digital pressure gauge 3 and soap film flowmeter 6.
Specifically, compressed air source unit 1, control air source equipment 2, digital pressure gauge 3 and valve are sequentially connected, one end of valve with
Digital pressure gauge 3 connects, and the other end of valve is connect with by the side of leak hunting aperture 5, by the other side of leak hunting aperture 5 and soap-film flow
6 connection of meter, to being hunted leak by leak hunting aperture 5 in the form of by the use spray bubble of soap film flowmeter 6.
In one embodiment of the utility model, compressed air source unit 1 stores air source using steel cylinder, and control air source equipment 2 is adopted
Use pressure reducing valve.By pressure reducing valve, air accumulator should be able to provide required bleed pressure after two level or three-level pressure-regulating device are adjusted
The air source of value, the supply pressure fluctation after stablizing are no more than ± the 1% of bleed pressure in a calibration process.
Specifically, it is 1kPa~1.5MPa that the utility model, which can control import air source pressure limit, digital pressure gauge 3 is accurate
Exactness grade is 0.05 grade；It can be positive pressure referance leak in (1mL/min~10L/min) range with correcting mark steelyard slepsydra rate, measure
Device is not more than 2.5% with respect to expanded uncertainty.
The utility model stores air source using steel cylinder, and compressed air dew point is less than -25 DEG C, totally, cleaning.The gas of storage
By pressure reducing valve, air accumulator, two level or three-level pressure-regulating device should be able to provide the air source of required bleed pressure value, after stablizing
Supply pressure fluctation is no more than ± the 1% of bleed pressure in a calibration process.
Pressure-regulating device preferentially selects pressure controller, and class of accuracy is high, pressure control stability is good, operation is simple
It is single.Air source need to install a digital pressure gauge 3 before entering by leak hunting aperture 5 before valve, which can show constantly works as
Preceding system pressure, guarantee are calibrated the relative error of indicating value of the bleed pressure value of channel-type referance leak in allowed limits.
The pressure gauge group should have the pressure gauge of each range, to meet measuring requirement.By after the leakage hole access device of school should row leakproofness survey
Examination (can be used spray bubble mode to hunt leak), and bleed pressure control device should have vent valve to be used for release after calibrating.
In one embodiment of the utility model, soap film flowmeter 6 with by leak hunting aperture 5 using quick adapter respectively with
Valve and soap film flowmeter 6 connect.
Specifically, the connection of each section uses quick coupling, it is convenient for 6 groups of 3 groups of digital pressure gauge and soap film flowmeter more
Change, also allow for the inspection of system sealing, by after the leakage hole access device of school should row performing leak test (can be used spray bubble mode carry out
Leak detection), bleed pressure control device should have vent valve to be used for release after calibrating.In view of the vapour lock of connecting tube, standard leakage
The connecting tube of the outlet end in hole and soap film flowmeter 6 should be short as far as possible, to reduce the vapour lock generated.
In the present invention, it is equipped with the digital pressure gauge 3 and soap film flowmeter 6 of different ranges, it can be to different requirements
Calibration is carried out with the channel-type referance leak of range ability, see the table below shown in 1：
Table 1
Digital pressure gauge 3 is mounted on control air source equipment 2 and between the leakage hole of school, is used to refer to leakage hole inlet pressure, number
The class of accuracy of word pressure gauge 3 should meet calibration needs, according to the requirement of leakage hole difference inlet pressure, need to select not same amount
The digital pressure gauge 3 of journey.
Soap film flowmeter 6 is used for measuring the flowmeter of minute gas flow.By one with graduated soap-film pipe, pass through meter
It calculates soap-film and calculates the instantaneous stream for flowing through flowmeter by the volume between two scale of time and soap-film pipe of scale above and below soap-film pipe
Amount.It can cover what this specification was applicable in by what the soap film flowmeter 6 of one or several different ranges formed according to the needs of calibration
The soap film flowmeter 6 of leak hole leak rate measurement range combines.
Bleed pressure control device is made of air source and control section, and air source is provided by steel cylinder gas storage, according to different leakages
Hole requires to select different gas types, and the dew point and purity of gas should meet alignment requirements.Steel cylinder gas passes through pressure reducing valve, gas storage
Tank, two level or three-level pressure-regulating device should be able to provide the air source of required bleed pressure value, the supply pressure fluctation symbol after stablizing
Close alignment requirements.
It should be noted that other than the equipment of requirements above, it is also necessary to which atmospheric pressure measurement device, Hygrothermograph carry out
The measurement and control of calibration environment.
In addition, the utility model is further equipped with atmospheric pressure meter and thermohygrometer as ancillary equipment, can use
Different filling gas obtains different leak rates by adjusting pressure, has a wide range of application.
According to the channel-type the Calibration Apparatus of A Standard Leak of the utility model embodiment, it is possible to provide different gas type, can
The soap film flowmeter of the normal pressure of tune, different ranges, device parameter meet《Channel-type referance leak calibrating standard》Requirement,
It is easy to spread at low cost, uncertainty is small, high degree of automation, simple operation and other advantages.The utility model is estimated annual
Considerable income can be brought, and can be improved and upgrade on this basis, the calibration for widening referance leak can be continued
The economic benefit of bigger is brought in field.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiments or example.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model
Principle and objective in the case of above-described embodiment can be changed in the scope of the utility model, change, replace and
Modification.The scope of the utility model is by appended claims and its equivalent limits.
Claims (4)
1. a kind of channel-type the Calibration Apparatus of A Standard Leak, which is characterized in that including：Compressed air source unit, control air source equipment, number pressure
Power meter and soap film flowmeter, wherein the compressed air source unit, control air source equipment, digital pressure gauge and valve are sequentially connected, described
One end of valve is connect with the digital pressure gauge, and the other end of the valve is connect with by the side of leak hunting aperture, described tested
The other side of leakage hole is connect with the soap film flowmeter, to described by leak hunting aperture in the form of by soap film flowmeter use spray bubble
It hunts leak.
2. channel-type the Calibration Apparatus of A Standard Leak as described in claim 1, which is characterized in that the control air source equipment uses
Pressure reducing valve.
3. channel-type the Calibration Apparatus of A Standard Leak as described in claim 1, which is characterized in that the soap film flowmeter with it is described
It is connect respectively with the valve and the soap film flowmeter using quick adapter by leak hunting aperture.
4. channel-type the Calibration Apparatus of A Standard Leak as described in claim 1, which is characterized in that the compressed air source unit uses steel cylinder
Store air source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820070881.8U CN207832385U (en) | 2018-01-16 | 2018-01-16 | A kind of channel-type the Calibration Apparatus of A Standard Leak |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820070881.8U CN207832385U (en) | 2018-01-16 | 2018-01-16 | A kind of channel-type the Calibration Apparatus of A Standard Leak |
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| CN207832385U true CN207832385U (en) | 2018-09-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117073921A (en) * | 2023-10-16 | 2023-11-17 | 成都睿宝电子科技有限公司 | Automatic calibration testing device and method based on helium mass spectrometer leak detector |
-
2018
- 2018-01-16 CN CN201820070881.8U patent/CN207832385U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117073921A (en) * | 2023-10-16 | 2023-11-17 | 成都睿宝电子科技有限公司 | Automatic calibration testing device and method based on helium mass spectrometer leak detector |
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