CN109297640A - A kind of device and method improving vacuum ionization halogen gas detector accuracy - Google Patents
A kind of device and method improving vacuum ionization halogen gas detector accuracy Download PDFInfo
- Publication number
- CN109297640A CN109297640A CN201811088286.8A CN201811088286A CN109297640A CN 109297640 A CN109297640 A CN 109297640A CN 201811088286 A CN201811088286 A CN 201811088286A CN 109297640 A CN109297640 A CN 109297640A
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- Prior art keywords
- detector
- halogen gas
- gas
- vacuum ionization
- vacuum
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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
-
- 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
Abstract
The invention discloses a kind of device and methods of raising vacuum ionization halogen gas detector accuracy, by the way that instrument caliber is adjusted, to change the vacuum degree of leak detector sensor, the value of electrical signals generated is allowed in leak detector sensor to change, it is restored to the factory setting value of leak detector, and then solve the problems, such as the drift that the measurement data caused by changing in vacuum ionization halogen gas detector use process because of element functions such as vacuum pump, sensors generates, keep measurement accuracy more accurate.Method and step provided by the present invention is simple, ingenious in design, easy to operate, low in cost, and effect is gratifying, time saving and energy saving, can generate good economic benefit and social effect.
Description
Technical field
The invention belongs to gas detecting instrument technical fields, and in particular to a kind of raising vacuum ionization halogen gas detection
The device and method of instrument accuracy.
Background technique
Halogen gas detector, it is main that fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At) are contained by vacuum ionization
Gas carries out measurement of concetration.Wherein using most importantly to the detection of sulfur hexafluoride gas, sulfur hexafluoride gas belongs to inertia
Gas is mainly used for the industries such as high voltage switch manufacturing industry, power transmission and distribution electric system, hot investment casting, especially on high-voltage switch gear
Utilization, its effect in high-voltage switch gear be promote dielectric strength and good extinguishes electric arc ability, once sulfur hexafluoride gas
Body leakage will lead to insulation decline and extinguishes electric arc ability decline, and high-tension switch gear can generate electric discharge, make system of entirely powering
System paralysis.Therefore, each high-voltage switch gear manufacturer hunts leak sulfur hexafluoride gas as factory essential items for inspection, and power supply system is by six
Sulfur fluoride gas leak test is as regular visit project.
Existing sulfur hexafluoride gas quantitative leak detector general measure concentration is 10-6-10-4, the concentration that needs to measure compared with
Low, with the use of equipment, the reasons such as pumping fluid is reduced, seal for pipe joints is deteriorated can all influence measurement result, and measurement is inaccurate
True phenomenon happens occasionally, and is unfavorable for the accurate measurement to the examination and test of products, be easy to cause the erroneous judgement of product qualification.
Summary of the invention
The purpose of the present invention is to provide a kind of device of raising vacuum ionization halogen gas detector accuracy and sides
Method solves the problems, such as vacuum ionization halogen gas quantitative leak detector measurement inaccuracy existing in the prior art.
The technical scheme adopted by the invention is that: a kind of side for improving vacuum ionization halogen gas detector accuracy
Method, it is characterised in that by changing the caliber of leak detector vacuum-pumping pipeline, change the vacuum degree in leak detector sensor, Jin Errang
The electric signal that tested gas generates is restored to factory setting, and to improve the accuracy of testing result, specific method includes following step
It is rapid:
Step 1: with the gas to be detected of vacuum ionization halogen gas detector sucking normal concentration；
Step 2: constantly regulate vacuum ionization with a kind of device of raising vacuum ionization halogen gas detector accuracy
The pipeline latus rectum of halogen gas detector, until the concentration measurement of the gas of leak detector measurement is identical as standard value；
Step 3: adjustment terminates, and the accuracy of vacuum ionization halogen gas detector reaches factory state, can carry out
Normal measurement.
The features of the present invention also characterized in that:
Vacuum ionization halogen gas detector is adjusted in step 2 method particularly includes:
When the concentration of sulfur hexafluoride measured value of leak detector measurement is higher than standard gas concentration value, instrument will test with regulating valve
Latus rectum become larger, leak detector sensor generate measurement electric signal become smaller therewith, when leak detector measurement sulfur hexafluoride gas it is dense
When spending measured value lower than standard gas concentration value, become smaller with the latus rectum that regulating valve will test instrument, the electricity that leak detector sensor generates
Signal becomes larger therewith.
Vacuum ionization halogen gas be specially sulfur hexafluoride gas, fluorine, chlorine, chloroform, freon F11, F12, F13,
F22。
A kind of device improving vacuum ionization halogen gas detector accuracy, including handle, handle and fixed plate it
Between be connected through a screw thread, handle pass through fixed plate be in contact with upper holder block, upper holder block surface setting fluted, the handle end
It is connected in the groove of upper holder block, the upper holder block side opposite with fixed plate is provided with lower lock block.
Vacuum ionizes halogen gas detector, main to contain fluorine (F), chlorine (Cl), bromine (Br), iodine by vacuum ionization
(I), the gas of astatine (At) carries out measurement of concetration, wherein fluorine-containing sulfur hexafluoride gas is in power industry with very extensive.
The change of leak detector pipeline caliber, can be used various ways in the present invention, can be by applying external force to pipeline
Mode changes, and can also change caliber by the size of control valve latus rectum by series connected valve on pipeline, used herein to change
It is only one such for becoming the method for caliber.
The invention has the benefit that
It is a kind of improve vacuum ionization the accuracy of halogen gas detector device and method solve vacuum ionization halogen
In the long-term use, measurement data caused by the variation of the element functions such as vacuum pump, sensor generates class gas detecting instrument
Drift the problem of, keep measurement accuracy more accurate, method provided by the present invention is easy to operate, ingenious in design, convenient and practical,
Good economic benefit and social effect can be generated.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for improving vacuum ionization halogen gas detector accuracy device of the present invention；
Fig. 2 is gas concentration and telecommunications in a kind of raising vacuum ionization halogen gas detector accuracy method of the present invention
Number affinity criterions curve graph.
In figure, 1. handles, 2. fixed plates, 3. upper holder blocks, 4. lower lock blocks, 5, leak detector pipeline.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of method improving vacuum ionization halogen gas detector accuracy provided by the invention, it is characterised in that logical
The caliber for changing leak detector vacuum-pumping pipeline is crossed, the vacuum degree in leak detector sensor is changed, and then tested gas is allowed to generate
Electric signal is restored to factory setting, to improve the accuracy of testing result, specific method the following steps are included:
Step 1: with the gas to be detected of vacuum ionization halogen gas detector sucking normal concentration；
Step 2: constantly regulate vacuum ionization with a kind of device of raising vacuum ionization halogen gas detector accuracy
The pipeline latus rectum of halogen gas detector, until the concentration measurement of the gas of leak detector measurement is identical as standard value；
Step 3: adjustment terminates, and the accuracy of vacuum ionization halogen gas detector reaches factory state, can carry out
Normal measurement.
Vacuum ionization halogen gas detector is adjusted in step 2 method particularly includes:
When the concentration of sulfur hexafluoride measured value of leak detector measurement is higher than standard gas concentration value, instrument will test with regulating valve
Latus rectum become larger, the vacuum degree in leak detector sensor will be lower therewith at this time, leak detector sensor generate measurement telecommunications
Number become smaller therewith, until the concentration measurement of the sulfur hexafluoride gas of leak detector measurement is equal to standard value；Adjusting terminates；Work as leak detection
When the sulfur hexafluoride gas concentration measured value of instrument measurement is lower than standard gas concentration value, become with the latus rectum that regulating valve will test instrument
Small, the vacuum degree in leak detector sensor will be got higher therewith at this time, and the electric signal that leak detector sensor generates becomes larger therewith, directly
The concentration measurement of the sulfur hexafluoride gas measured to leak detector is identical as standard value, and adjusting terminates；
Vacuum ionization halogen gas be specially sulfur hexafluoride gas, fluorine, chlorine, chloroform, freon F11, F12, F13,
F22。
A kind of device improving vacuum ionization halogen gas detector accuracy, as shown in Figure 1, including handle 1, handle
1 is pulled on 2 by Screw assembly in fixation, and handle 1 passes through fixed plate 2 and withstands on 3 top of upper holder block, and upper holder block 3 and lower lock block 4 are distinguished
It is fixed on above and below instrument pipeline 5,.The application method of the device, will be upper specifically, by rotating clockwise handle 1
Briquetting 3 is pressed downward, and the distance between upper holder block 3 and lower lock block 4 become smaller, and the latus rectum of instrument pipeline 5 (material is silicone tube) is therewith
Become smaller, rotating handle 1 counterclockwise, the pressure on upper holder block 3 reduces, and the pressure on instrument pipeline 5 reduces, and pipeline restores original shape
State, pipeline latus rectum become larger.
A kind of method for improving vacuum ionization halogen gas detector accuracy of the present invention, principle is:
Vacuum of the present invention ionizes halogen gas quantitative leak detector, is by ionizing under certain vacuum degree
Tested gas, measures gas concentration by capturing the quantity of electronics.By taking sulfur hexafluoride gas as an example, in leak detector manufacturing process
In, the calibrating gas of various concentration is measured with sulfur hexafluoride quantitative leak detector first, and record sensor and correspond to various concentration institute
The value for generating electric signal, as shown in Fig. 2, a smooth experiment curv is depicted as, as the detection in leak detector use process
Foundation.In leak detector use process, the different electric signals that sensor is generated according to various concentration, the electric signal and measurement are bent
Line compares, and the concentration value of corresponding tested gas can be obtained,
Several groups of experimental datas that the following are the present invention by taking sulfur hexafluoride quantitative leak detector as an example:
| Concentration (ppm) | 0 | 1 | 5 | 10 | 20 | 40 | 60 | 80 | 100 |
| Factory calibration value | 273 | 585 | 1006 | 1289 | 1563 | 1758 | 1806 | 1855 | 1895 |
| Deviation 1 | 254 | 527 | 898 | 1152 | 1426 | 1641 | 1680 | 1758 | 1797 |
| Calibration 1 | 273 | 580 | 1006 | 1290 | 1560 | 1760 | 1800 | 1860 | 1896 |
| Deviation 2 | 293 | 645 | 1055 | 1387 | 1660 | 1855 | 1891 | 1930 | 1953 |
| Calibration 2 | 273 | 590 | 1006 | 1286 | 1565 | 1751 | 1805 | 1854 | 1894 |
| Deviation 3 | 313 | 684 | 1133 | 1426 | 1690 | 1892 | 1934 | 1968 | 1992 |
| Calibration 3 | 273 | 585 | 1006 | 1291 | 1569 | 1755 | 1804 | 1853 | 1893 |
This table concentration unit is 10-6(volume ratio), factory calibration value, deviation, calibration unit are millivolt
When leak detector with use there is deviation when, see the above table the second row be leak detector factory when calibration value, the third line
Measured value is less than normal than standard value, and fifth line, the 7th row measured value are bigger than normal than standard value.With 5ppm normal concentration sulfur hexafluoride gas
After being adjusted using above-mentioned steps 1,2,3, sensor value of electrical signals when 5ppm is restored to setting value when factory, other concentration
Setting value when sensor value of electrical signals is also close to factory.
A kind of method improving vacuum ionization halogen gas leak detector accuracy of the present invention, it is a certain by sucking
Calibrating gas is calibrated leak detector with the method for adjusting pipe diameter size, can be calibrated to the offset of entire experiment curv,
And it is not only calibrated just for a certain certain concentration.
A kind of device and method for improving vacuum ionization halogen gas detector accuracy of the present invention, by instrumentation tube
Diameter is adjusted, to change the vacuum degree of leak detector sensor, allows in leak detector sensor the value of electrical signals hair generated
Changing, is restored to the factory setting value of leak detector, and then solves in vacuum ionization halogen gas detector use process
The problem of drift that measurement data caused by changing because of element functions such as vacuum pump, sensors generates, make measurement accuracy more
Accurately.Method and step provided by the present invention is simple, ingenious in design, low in cost, and effect is gratifying, time saving and energy saving, can generate
Good economic benefit and social effect.
Claims (4)
1. a kind of method for improving vacuum ionization halogen gas detector accuracy, it is characterised in that taken out by changing leak detector
The caliber of vacuum line changes the vacuum degree in leak detector sensor, and then the electric signal for allowing tested gas to generate is restored to out
Factory setting, to improve the accuracy of testing result, specific method the following steps are included:
Step 1: with the gas to be detected of vacuum ionization halogen gas detector sucking normal concentration；
Step 2: constantly regulate vacuum ionization halogen with a kind of device of raising vacuum ionization halogen gas detector accuracy
The pipeline latus rectum of class gas detecting instrument, until the concentration measurement of the gas of leak detector measurement is identical as standard value；
Step 3: adjustment terminates, and the accuracy of vacuum ionization halogen gas detector reaches factory state, can carry out normal
Measurement.
2. a kind of method of raising vacuum ionization halogen gas detector accuracy according to claim 1,
It is characterized in that, adjusting vacuum ionization halogen gas detector in the step 2 method particularly includes:
It, will with regulating valve when the vacuum ionization halogen gas concentration measurement of leak detector measurement is higher than standard gas concentration value
The latus rectum of detector becomes larger, and the measurement electric signal that leak detector sensor generates becomes smaller therewith, when the sulfur hexafluoride of leak detector measurement
When gas concentration measurement is lower than standard gas concentration value, become smaller with the latus rectum that regulating valve will test instrument, leak detector sensor produces
Raw electric signal becomes larger therewith.
3. a kind of method of raising vacuum ionization halogen gas detector accuracy according to claim 1,
It is characterized in that, the vacuum ionization halogen gas detector is specially sulfur hexafluoride gas, fluorine, chlorine, chloroform, freon
F11、F12、F13、F22。
4. a kind of device of raising vacuum ionization halogen gas detector accuracy for claim 1-3 the method,
It is characterised in that it includes handle (1), is connected through a screw thread between handle (1) and fixed plate (2), handle (1) passes through fixed plate
(2) it is in contact with upper holder block (3), the setting of upper holder block (3) surface is fluted, and handle (1) end is connected to upper holder block (3)
In groove, upper holder block (3) side opposite with fixed plate (2) is provided with lower lock block (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811088286.8A CN109297640B (en) | 2018-09-18 | 2018-09-18 | Device and method for improving accuracy of vacuum ionization halogen gas detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811088286.8A CN109297640B (en) | 2018-09-18 | 2018-09-18 | Device and method for improving accuracy of vacuum ionization halogen gas detector |
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| Publication Number | Publication Date |
|---|---|
| CN109297640A true CN109297640A (en) | 2019-02-01 |
| CN109297640B CN109297640B (en) | 2021-03-05 |
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| CN201811088286.8A Expired - Fee Related CN109297640B (en) | 2018-09-18 | 2018-09-18 | Device and method for improving accuracy of vacuum ionization halogen gas detector |
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Citations (7)
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|---|---|---|---|---|
| CN102287547A (en) * | 2010-06-17 | 2011-12-21 | 励土峰 | Flexible pipe valve device |
| CN102494852A (en) * | 2011-12-06 | 2012-06-13 | 中国航天科技集团公司第五研究院第五一〇研究所 | Method for calibrating helium mass spectrometer leak detector |
| CN102538916A (en) * | 2012-02-06 | 2012-07-04 | 江苏东方航天校准检测有限公司 | Portable gas micro-flow calibration system and method thereof |
| CN102589803A (en) * | 2012-02-06 | 2012-07-18 | 江苏东方航天校准检测有限公司 | Portable multifunctional vacuum calibration system and method |
| CN104280199A (en) * | 2014-09-12 | 2015-01-14 | 兰州空间技术物理研究所 | Mass spectrograph linear section testing method |
| CN106768686A (en) * | 2016-12-05 | 2017-05-31 | 安徽皖仪科技股份有限公司 | A kind of method for improving helium mass spectrometer leak detector sensitivity |
| CN107543661A (en) * | 2016-07-22 | 2018-01-05 | 北京卫星环境工程研究所 | The adjustable vacuum leak hunting automated system of sensitivity |
-
2018
- 2018-09-18 CN CN201811088286.8A patent/CN109297640B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287547A (en) * | 2010-06-17 | 2011-12-21 | 励土峰 | Flexible pipe valve device |
| CN102494852A (en) * | 2011-12-06 | 2012-06-13 | 中国航天科技集团公司第五研究院第五一〇研究所 | Method for calibrating helium mass spectrometer leak detector |
| CN102538916A (en) * | 2012-02-06 | 2012-07-04 | 江苏东方航天校准检测有限公司 | Portable gas micro-flow calibration system and method thereof |
| CN102589803A (en) * | 2012-02-06 | 2012-07-18 | 江苏东方航天校准检测有限公司 | Portable multifunctional vacuum calibration system and method |
| CN104280199A (en) * | 2014-09-12 | 2015-01-14 | 兰州空间技术物理研究所 | Mass spectrograph linear section testing method |
| CN107543661A (en) * | 2016-07-22 | 2018-01-05 | 北京卫星环境工程研究所 | The adjustable vacuum leak hunting automated system of sensitivity |
| CN106768686A (en) * | 2016-12-05 | 2017-05-31 | 安徽皖仪科技股份有限公司 | A kind of method for improving helium mass spectrometer leak detector sensitivity |
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| CN109297640B (en) | 2021-03-05 |
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