CN107290109A - Fluorine type gas quantitative leak method and quantitative leak detector based on ionization principle - Google Patents
Fluorine type gas quantitative leak method and quantitative leak detector based on ionization principle Download PDFInfo
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- CN107290109A CN107290109A CN201710647754.XA CN201710647754A CN107290109A CN 107290109 A CN107290109 A CN 107290109A CN 201710647754 A CN201710647754 A CN 201710647754A CN 107290109 A CN107290109 A CN 107290109A
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- 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
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention discloses a kind of fluorine type gas quantitative leak method based on ionization principle and quantitative leak detector, quantitative leak detector includes gas collector and ionization chamber, and gas collector is connected with ionization chamber, and gas collector conveys gas into ionization chamber；Filter assemblies provided with the fine particle in filtering gas in gas collector.Filter assemblies are arranged on the gas collecting mouthful of gas collector, and the two is detachably connected.The filtering accuracy of filter assemblies is PM1.0~PM2.5.Gas collector includes a gas collecting pipe；Filter assemblies include filter tip and filter screen, and filter screen is fixed in filter tip, and filter tip is fixed on gas collecting pipe.The present invention's has carried out filtration treatment when gas is collected based on the fluorine type gas quantitative leak method and quantitative leak detector for ionizing principle to gas, so as to remove the fine particle in gas, when being ionized to gas after filter, the radix of sensor keeps stable, so as to ensure that the continuity of detection.
Description
Technical field
The present invention relates to the structure-design technique field of quantitative leak detector, espespecially a kind of fluorine type gas based on ionization principle
Quantitative leak method and quantitative leak detector, fluorine type gas here are primarily referred to as SF6, freon.
Background technology
The fluorine type gas quantitative leak detector of principle is ionized based on high frequency magnetic field low pressure, possesses sensitivity height, sensor without easy
The characteristics of damaging part, its operation principle is：Under test gas is gathered into ionization chamber, if there is gas leakage under test gas, is passed
The reading increase of sensor, ionization chamber is luminous to brighten, so that it is determined that leakage point, more detailed operation principle can be found in Application No.
A kind of operation principle of Special leakage detector for air conditioner disclosed in CN201120375458.7 patent application document.
This detection method is in practical work process, under without fluorine type gas environment, the radix meeting that sensor is shown
Always during in decline, user is needed frequently to adjust radix, and this continuity that can cause to detect work is caused
Interrupt, up to the present, those skilled in the art, which is not found under without fluorine type gas environment, causes sensor radix
The reason for decline, more do not find out the effective ways of control radix rapid decrease.
Therefore, the applicant is directed to providing a kind of fluorine type gas quantitative leak method based on ionization principle and quantitative inspection
Leak instrument.
The content of the invention
It is an object of the invention to provide a kind of fluorine type gas quantitative leak method based on ionization principle and quantitative leak detector,
It can be effectively solved under without fluorine type gas environment, the problem of sensor radix declines always, so as to ensure to detect work
Be carried out continuously.
The technical scheme that the present invention is provided is as follows：
A kind of fluorine type gas quantitative leak method based on ionization principle, including step：
S10：Gas is gathered, and filters the fine particle in the gas；
S20：Gas after filter is transported to ionization chamber；
S30：Ionize gas after the filter.
Preferably, in the step S10, filtering accuracy when filtering the gas is PM1.0~PM2.5.
A kind of fluorine type gas quantitative leak detector based on ionization principle, including gas collector and ionization chamber, the gas
Collector is connected with the ionization chamber, and the gas collector is used to convey gas into the ionization chamber；The gas collecting
A filter assemblies are provided with device, the filter assemblies are used to filter the fine particle in gas.
Preferably, the filter assemblies are arranged at the gas collecting of the gas collector mouthful.
Preferably, the filter assemblies are detachably connected with the gas collector.
Preferably, the filtering accuracy of the filter assemblies is PM1.0~PM2.5.
Preferably, the gas collector includes a gas collecting pipe；The filter assemblies include filter tip and filter screen, described
Filter screen is fixed in the filter tip, and the filter tip is fixed on the gas collecting pipe.
Preferably, the gas collecting pipe is threadedly coupled with the filter tip.
Preferably, the filter assemblies also include a sealing ring, and the sealing ring is arranged on the filter screen and the filter tip
Junction.
Preferably, the filter screen is glassfibre filters.
The present invention based on ionization principle fluorine type gas quantitative leak method and quantitative leak detector collect gas when
Time has carried out filtration treatment to gas, so that the fine particle in gas is removed, when being ionized to gas after filter, sensor
Radix keeps stable, so as to ensure that the continuity of detection.
Brief description of the drawings
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, the fluorine type gas of the present invention is determined
Above-mentioned characteristic, technical characteristic, advantage and its implementation of amount leak hunting method and quantitative leak detector are further described.
Fig. 1 is a kind of local knot of specific embodiment of the fluorine type gas quantitative leak detector based on ionization principle of the present invention
Structure schematic diagram.
Drawing reference numeral explanation：
Gas collecting pipe 10, filter tip 21, filter screen 22, sealing ring 23.
Embodiment
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, control is illustrated below
The embodiment of the present invention.It should be evident that drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing, and obtain other embodiments.To make only schematically show and phase of the present invention in simplified form, each figure
The part of pass, they do not represent it as the practical structures of product.
The applicant is in the production of product and it was found that, under haze weather, the fluorine type gas based on ionization principle
Quantitative leak detector in sensor radix decline quickly, and under the excellent environment of air quality, radix decline it is relatively slow, because
This, applicant is considered, because haze either micro- dust microparticle plugs valve inside, to cause the decline of charge flow rate, cause
The raising of vacuum, the decline of radix.
On this basis, the applicant for solve under without fluorine type gas environment in leak detector sensor radix decline compared with
Fast the problem of, attempted following methods：
Method one：Forward direction is blown, and being directed at valve inside position using pressure-air carries out periodicity injection, discovery sensor
Radix rises at once, but the test benchmark flown up for radix of vacuum can not be determined, particularly continuously detected
Under environment, can not determine fluorine type gas whether there is and the actual concentrations of fluorine type gas in the case of, the test number of fracture
According to be cannot be received；
Method two：Reversely blow, effect is identical with positive air blowing.
Method three：Control flow to quantify, adjust due to the decline of charge flow rate caused by haze or micro- dust, it is ensured that stream
The stabilization of amount, but this method is feasible in theory, but the problem of be due to price and size, it is impossible to obtain actual use.
Method four：Using the air at the filter element filtering import of PM1.0~2.5, this inspiration comes from a PM2.5 air-conditionings filter
In the effect lecture experiment of core, the cuboid chest that a lucite is made, top is a piece of PM2.5 filter cottons, and bottom is
One small-sized scavenger fan, outwards exhaust, when fan does not work, haze table test value reaches more than 120, after blower fan is opened, haze
Table show value rapid decrease.
In order to which whether verification method four is to solve the effective ways that radix declines, applicant is by a piece of PM2.5 filter cottons bag
Prick in fluorine type gas quantitative leak detector detector air inlet, tightened with rubber band, by lasting experiment in 3 hours, find this method
The decline of radix can effectively be controlled.And through haze sky and air quality it is excellent in the case of, multiple repetition test, verify this method energy
The effectively decline of control radix.
To sum up, applicant has drawn two kinds of specific embodiments, and specific embodiment one discloses a kind of based on ionization principle
Fluorine type gas quantitative leak method, including step：S10：Gas is gathered, and filters the fine particle in gas；S20：After filtering
Gas is transported to ionization chamber；S30：Gas after ionization filter.Specifically, in step slo, filtering accuracy during filtering gas is
PM1.0~PM2.5, it is small that filtering accuracy refers to be filtered to remove aerodynamics equivalent diameter in surrounding air for PM1.0~PM2.5
In the particulate matter equal to 1.0~2.5 microns.
Wherein, fine particle is also known as particulate, fine grained, PM2.5.Fine particle refers to equivalent aerodynamic in surrounding air
Diameter is less than or equal to 2.5 microns of particulate matter, and these fine particles can be adhered on a sensor after entering in ionization chamber, made
Into sensor in the environment without fluorine type gas the problem of radix continuous decrease.
Specific embodiment two discloses a kind of fluorine type gas quantitative leak detector based on ionization principle, including gas collector
And ionization chamber, gas collector connects with ionization chamber, and gas collector conveys gas into ionization chamber.It is provided with gas collector
Filter assemblies, filter assemblies are used to filter the fine particle in gas.
Specifically, filter assemblies are arranged at the gas collecting of gas collector mouthful, also, filter assemblies and gas collecting
Device is detachably connected, and so sets the replacing for being easy to filter assemblies.The filtering accuracy of filter assemblies is PM1.0~PM2.5.Filtering
The filtering accuracy of component is that PM1.0~PM2.5 refers to that filter assemblies can be filtered to remove equivalent aerodynamic in surrounding air
Diameter is less than or equal to 1.0~2.5 microns of particulate matter.
In the present embodiment, as shown in figure 1, gas collector includes a gas collecting pipe 10, filter assemblies include filter tip
21 and filter screen 22, filter screen 22 is fixed in filter tip 21, and filter tip 21 is fixed on gas collecting pipe 10, and filter screen 22 is glass fibre filter
Net, filter tip 21 is threadedly coupled with gas collecting pipe 10.Filter assemblies also include sealing ring 23, and sealing ring 23 is arranged on the He of filter screen 22
The junction of filter tip 21.
After multiple authentication, filtering core assembly can be customized to auxiliary equipment, be used as a fluorine type gas quantitative leak
The consumable accessory of instrument is supported the use, and the auxiliary equipment service life is up to more than 100 hours.
Of course, in other based on the fluorine type gas quantitative leak method and quantitative leak detector for ionizing principle of the present invention
In specific embodiment, filtering accuracy can be adjusted as needed；The concrete structure of filter assemblies can also do accommodation, this
Place is repeated no more.
It should be noted that air-conditioning leak detector normally only does qualitative detection, and the decline of sensor radix is to qualitative detection
Influence less, therefore, the present invention in leak hunting method and leak detector be mainly used in the quantitative leak of fluorine type gas test in,
Especially SF6, the gas such as freon quantitative leak test in.
It should be noted that above-described embodiment can independent assortment as needed.Described above is only the preferred of the present invention
Embodiment, it is noted that for those skilled in the art, is not departing from the premise of the principle of the invention
Under, some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of fluorine type gas quantitative leak method based on ionization principle, it is characterised in that including step：
S10：Gas is gathered, and filters the fine particle in the gas；
S20：Gas after filter is transported to ionization chamber；
S30：Ionize gas after the filter.
2. the fluorine type gas quantitative leak method as claimed in claim 1 based on ionization principle, it is characterised in that：
In the step S10, filtering accuracy when filtering the gas is PM1.0~PM2.5.
3. a kind of fluorine type gas quantitative leak detector based on ionization principle, it is characterised in that：
Including gas collector and ionization chamber, the gas collector is connected with the ionization chamber, and the gas collector is used for
Gas is conveyed into the ionization chamber；
A filter assemblies are provided with the gas collector, the filter assemblies are used to filter the fine particle in gas.
4. the fluorine type gas quantitative leak detector according to claim 3 based on ionization principle, it is characterised in that：
The filter assemblies are arranged at the gas collecting of the gas collector mouthful.
5. the fluorine type gas quantitative leak detector according to claim 3 based on ionization principle, it is characterised in that：
The filter assemblies are detachably connected with the gas collector.
6. the fluorine type gas quantitative leak detector according to claim 3 based on ionization principle, it is characterised in that：
The filtering accuracy of the filter assemblies is PM1.0~PM2.5.
7. the fluorine type gas quantitative leak detector according to claim 3 based on ionization principle, it is characterised in that：
The gas collector includes a gas collecting pipe；
The filter assemblies include filter tip and filter screen, and the filter screen is fixed in the filter tip, and the filter tip is fixed on the gas
On body collection tube.
8. the fluorine type gas quantitative leak detector according to claim 7 based on ionization principle, it is characterised in that：
The gas collecting pipe is threadedly coupled with the filter tip.
9. the fluorine type gas quantitative leak detector according to claim 7 based on ionization principle, it is characterised in that：
The filter assemblies also include a sealing ring, and the sealing ring is arranged on the junction of the filter screen and the filter tip.
10. the fluorine type gas quantitative leak detector according to claim 7 based on ionization principle, it is characterised in that：
The filter screen is glassfibre filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710647754.XA CN107290109B (en) | 2017-08-01 | 2017-08-01 | Fluorine gas quantitative leakage detecting method and quantitative leakage detector based on ionization principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710647754.XA CN107290109B (en) | 2017-08-01 | 2017-08-01 | Fluorine gas quantitative leakage detecting method and quantitative leakage detector based on ionization principle |
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| Publication Number | Publication Date |
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| CN107290109A true CN107290109A (en) | 2017-10-24 |
| CN107290109B CN107290109B (en) | 2023-09-01 |
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Citations (11)
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|---|---|---|---|---|
| CN2308894Y (en) * | 1997-07-31 | 1999-02-24 | 深圳市环境保护监测站 | Oil fume collector |
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