CN103575459B - The measurement apparatus of a kind of vacuum heat-insulating plate internal pressure and method of testing thereof - Google Patents
The measurement apparatus of a kind of vacuum heat-insulating plate internal pressure and method of testing thereof Download PDFInfo
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- CN103575459B CN103575459B CN201210279357.9A CN201210279357A CN103575459B CN 103575459 B CN103575459 B CN 103575459B CN 201210279357 A CN201210279357 A CN 201210279357A CN 103575459 B CN103575459 B CN 103575459B
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- 238000005259 measurement Methods 0.000 title abstract description 20
- 238000010998 test method Methods 0.000 title abstract description 8
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 238000009413 insulation Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012800 visualization Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 5
- 239000011162 core material Substances 0.000 description 4
- 239000005030 aluminium foil Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004531 microgranule Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The invention discloses the measurement apparatus of a kind of vacuum heat-insulating plate internal pressure and method of testing thereof, based on when there is pressure difference in this device, film can be heaved to the side that pressure is low inside and outside vacuum heat-insulation board barrier membrane, and Obstruct membrane reaches the principle of balance when pressure is equal.It is characterized in that this device includes computer, radio system, sundstrand pump, high accuracy vacuum pressure sensor, horizontal alignment frame, miniature laser diastimeter, the transparent sucker of hard osculum, hard conduit, clip and " L " shape spring stop.This invention can accurately measure the pressure of vacuum insulation intralaminar part, meets the measurement requirement of condition of high vacuum degree vacuum heat-insulating plate, it is possible to carries out the visualization of measurement process, does not damage sample, it is possible to adapt to the measurement of the vacuum heat-insulating plate of big and small different size.Due to this measurement process accurately, simply and fast, will be widely used in actual production.
Description
Technical field
The present invention relates to a kind of pressure measurer and method of testing thereof, especially relate to measurement apparatus and the method for testing thereof of a kind of vacuum heat-insulating plate internal pressure.
Background technology
Vacuum heat-insulating plate is a kind of novel super-high effect heat-insulating plate occurred in recent years, and it is mainly made up of core, Obstruct membrane and getter three part.Owing to it is in conjunction with the advantage of the adiabatic two kinds of adiabatic methods of vacuum insulation and microgranule, improve vacuum in plate to greatest extent, reduce the convection current of gas thus realizing thermal insulation, therefore there is extremely low heat conductivity and excellent heat-insulating property, be current state-of-the-art thermal insulation material in the world.At present, the detection method of the internal pressure of vacuum heat-insulating plate there is no national standard now, can only be formulated industry standard by manufacturing enterprise.
Internal pressure is the life of vacuum heat-insulating plate, and internal pressure is low, then heat conductivity of vacuum insulation panel is low, and heat-proof quality is good.Ensureing the performance completely of vacuum heat-insulating plate heat-proof quality, its internal pressure at least should be ensured that at below 100Pa.Aging, deposit or in use procedure, once vacuum decay or loss, then the performance of vacuum heat-insulating plate will be greatly affected by affects even complete failure, thus the consistency of performance that vacuum heat-insulating plate is in-service and stability are particular importances.
The measurement of the internal pressure of vacuum heat-insulating plate is extremely difficult.Owing to vacuum insulation plate thickness is thin and limited mechanical strength, easily causes the deformation of plate itself when measurement and be damaged；Barrier bag again can not perforate；When measurement internal pressure, often the gravity of Obstruct membrane itself is the root causing error, and common measuring method cannot use at all.
Existing a kind of effective ways testing vacuum heat-insulating plate internal pressure in the world, it is placed in vacuum insulation intralaminar part by a kind of micro embedded capacitive pressure transducer, utilize wireless radio transmission detection vacuum heat-insulating plate internal pressure, during as product export, inspection uses, thus ensureing the quality of vacuum insulation panel products.But there is the limitation of the following aspects in this technology: when vacuum heat-insulation board barrier membrane has certain thickness aluminium foil (air penetrability low for ensureing heat-insulating shield, requisite during aluminium foil), aluminium foil will shield transducing signal, so that this kind of method cannot be implemented；When this method of testing is not suitable for large scale test, random sampling observation and takes out sensor, sample is then destroyed.
And for example Chinese patent CN101788364B (publication date is on July 27th, 2011) discloses the degree detection device of vacuum of a kind of vacuum heat-insulating plate.The method utilizes gas perfect condition equation pV=nRT to propose a kind of new approaches measuring vacuum heat-insulating plate internal pressure, and considers the temperature impact on pressure.The method is based on the principle of destructive detection, vacuum heat-insulating plate is placed in the environment of a fine vacuum, several lower initial temperatures and vacuum pressure, again through means of destruction, heat-insulating shield is destroyed, its internal gas is made to release under vacuum environment, now namely the temperature in this bad border, vacuum pressure change, and again record temperature now and vacuum pressure, are calculated the vacuum of vacuum heat-insulating plate by two secondary data.The method there is also defect and problem simultaneously: failure test cannot complete extensive detection；Additionally P in formula0=[P2(V+V1)T1/T2-P1V1What in]/V, V represented as known quantity is the volume of vacuum chamber in vacuum heat-insulating plate, but the extremely difficult measurement of the volume of vacuum chamber and very easily produce error, remain to be discussed as known quantity；This device cannot measure the vacuum heat-insulating plate that plate area is excessive, and can put into vacuum tank be also a problem.
Summary of the invention
The purpose of the present invention is intended to overcome the deficiencies in the prior art, it is provided that the measurement apparatus of a kind of vacuum heat-insulating plate internal pressure and method of testing thereof.
The technical scheme is that provide a kind of device measuring vacuum heat-insulating plate internal pressure and method of testing thereof for realizing the purpose of the present invention, based on when there is pressure difference inside and outside vacuum heat-insulation board barrier membrane in this device, film can be heaved to the side that pressure is low, and Obstruct membrane reaches the principle of balance when pressure is equal.It is characterized in that this device includes computer, radio system, sundstrand pump, high accuracy vacuum pressure sensor, horizontal alignment frame, miniature laser diastimeter, the transparent sucker of hard osculum；Hard conduit, clip and " L " shape spring stop；Vacuum heat-insulating plate to be measured is vertically placed, and sucker actinal surface is perpendicular to horizontal plane；Middle-end and end at conduit are respectively mounted miniature laser diastimeter and high accuracy vacuum pressure sensor；Adopting the transparent sucker of hard osculum, sucker mouth place thickeies, and inside sucker mouth, circular diameter is between 1 ~ 4cm, and outside sucker mouth, circular diameter is between 8 ~ 12cm；Vacuum heat-insulating plate is fixed jointly by upper clamp, the cuboid spring stop of bottom, " L " shape spring stop and the transparent sucker of hard osculum, and " L " shape spring stop height is between 0.6 ~ 2m；Radio system is by miniature laser diastimeter and the high accuracy signal collection that transmits of vacuum pressure sensor and inputs computer；There is one group of horizontal calibrating device, it is ensured that conduit is placed in the horizontal direction, sucker actinal surface is perpendicular to horizontal plane.
A kind of method of testing measuring vacuum heat-insulating plate internal pressure, it is characterised in that include the step of following sequence:
(1) vacuum heat-insulating plate is vertically placed on " L " shape spring stop；
(2) being stepped up by vacuum heat-insulating plate top clip, bottom wants cuboid spring stop to withstand；
(3) vacuum heat-insulating plate contacts along with the thrust of left side spring moves right with the transparent sucker of hard osculum and fixes；
(4) sundstrand pump is started working, and constantly takes air away, makes the pressure in conduit and sucker constantly reduce；
(5) probe distance to Obstruct membrane recorded by miniature laser diastimeter, and high accuracy vacuum pressure sensor records the pressure values of constantly reduction；
(6) radio system by miniature laser diastimeter and the high accuracy signal collection that transmits of vacuum pressure sensor and inputs computer, and forms image and data base；
(7) owing to volume sum reserved between conduit, sucker and conduit and sundstrand pump is bigger, Obstruct membrane heave without influence on the pressure outside Obstruct membrane, when in sucker, the pressure of gas arrives pressure values in plate, Obstruct membrane can be heaved moment, there is the moment of fluctuation in miniature laser diastimeter, record high accuracy pressure values shown by vacuum pressure sensor, be the pressure values of vacuum insulation intralaminar part.
The present invention compared with prior art, has the advantage that (1) vacuum heat-insulating plate to be measured is vertically placed, and sucker actinal surface is perpendicular to horizontal plane, it is possible to exclude the impact that measurement result is caused by Obstruct membrane material gravity dexterously；(2) sundstrand pump adopts the cooperation of backing pump and two stage pump, it is possible to is extracted into extremely low pressure, meets the measurement requirement of condition of high vacuum degree vacuum heat-insulating plate；(3) the transparent sucker of hard osculum is adopted, sucker mouth place thickeies, it is possible to carries out the visualization of measurement process, is also to one preliminary verification of measurement result, additionally sucker mouth thickeies and sucker mouth can be avoided to produce vestige on vacuum heat-insulating plate, does not affect being continuing with of test sample；(4) " L " shape spring stop height is between 0.6 ~ 2m, and clip can slide up and down, it is possible to adapts to the measurement of the vacuum heat-insulating plate of big and small different size；(5) certainty of measurement is high, measures simple and fast.
Accompanying drawing explanation
The structural representation of the device measuring vacuum heat-insulating plate internal pressure of Fig. 1 present invention；
The device core measuring point measuring vacuum heat-insulating plate internal pressure of Fig. 2 present invention side view before measuring；
The device core measuring point measuring vacuum heat-insulating plate internal pressure of Fig. 3 present invention side view in measurement process.
Detailed description of the invention
Below in conjunction with specific embodiment, it is further elucidated with the present invention, it should be understood that these embodiments are merely to illustrate the present invention rather than restriction the scope of the present invention, after having read the present invention, the amendment of the various equivalent form of values of the present invention is all fallen within the application claims and is limited by those skilled in the art.
Embodiment
As shown in Figure 1, a kind of device measuring vacuum heat-insulating plate internal pressure, based on when there is pressure difference in this device, film can be heaved to the side that pressure is low inside and outside vacuum heat-insulation board barrier membrane, and Obstruct membrane reaches the principle of balance when pressure is equal, it is characterised in that 10, computer；20, radio system；30, sundstrand pump；40, high accuracy vacuum pressure sensor；50, horizontal alignment frame；60, miniature laser diastimeter；70, the transparent sucker of hard osculum；80, hard conduit；90, clip；11, vacuum heat-insulating plate to be measured；21, " L " shape spring stop；31, spring；41, cuboid spring stop；51, core material of vacuum heat insulation plate；61, the Obstruct membrane of initial vacuum heat-insulating shield is measured；71, the vacuum heat-insulation board barrier membrane deformed.
It is characterized in that vacuum heat-insulating plate to be measured is vertically placed, sucker actinal surface is perpendicular to horizontal plane；Middle-end and end at conduit are respectively mounted miniature laser diastimeter and high accuracy vacuum pressure sensor；Adopting the transparent sucker of hard osculum, sucker mouth place thickeies, and inside sucker mouth, circular diameter is 2cm, and outside sucker mouth, circular diameter is 10cm；Vacuum heat-insulating plate is fixed jointly by upper clamp, the cuboid spring stop of bottom, " L " shape spring stop and the transparent sucker of hard osculum, and " L " shape spring stop height is 1.2m.；Radio system is by miniature laser diastimeter and the high accuracy signal collection that transmits of vacuum pressure sensor and inputs computer；There is one group of horizontal calibrating device, it is ensured that conduit is placed in the horizontal direction, sucker actinal surface is perpendicular to horizontal plane.
A kind of device measuring vacuum heat-insulating plate internal pressure, it is characterised in that the measuring method of this device includes the step of following sequence:
(1) specification is that 600 × 300 × 10mm vacuum heat-insulating plate is vertically placed on high on 1.2m " L " shape spring stop；
(2) being stepped up by vacuum heat-insulating plate top clip, bottom wants cuboid spring stop to withstand；
(3) vacuum heat-insulating plate contacts along with the thrust of left side spring moves right with the transparent sucker of hard osculum and fixes；
(4) sundstrand pump is started working, and constantly takes air away, makes the pressure in conduit and sucker constantly reduce；
(5) probe distance to Obstruct membrane recorded by miniature laser diastimeter, and high accuracy vacuum pressure sensor records the pressure values P of constantly reduction；
(6) radio system by miniature laser diastimeter and the high accuracy signal collection that transmits of vacuum pressure sensor and inputs computer, and forms image and data base；
(7) owing to volume sum reserved between conduit, sucker and conduit and sundstrand pump is bigger, Obstruct membrane heave without influence on the pressure outside Obstruct membrane, when in sucker, the pressure of gas arrives pressure values in plate, Obstruct membrane can be heaved moment, there is the moment of fluctuation in miniature laser diastimeter, records high accuracy pressure values P shown by vacuum pressure sensor0, it is the pressure values P of vacuum insulation intralaminar partn。
Above are only the single detailed description of the invention of the present invention, but the design concept of the present invention is not limited thereto, all changes utilizing this design that the present invention carries out unsubstantiality, the behavior invading the scope of protection of the invention all should be belonged to.In every case it is the content without departing from technical solution of the present invention, according to any type of simple modification, equivalent variations and remodeling that above example is made by the technical spirit of the present invention, still falls within the protection domain of technical solution of the present invention.
Claims (5)
- null1. the device measuring vacuum heat-insulating plate internal pressure，It is characterized in that this device is by computer、Radio system、Sundstrand pump、High accuracy vacuum pressure sensor、Horizontal alignment frame、Miniature laser diastimeter、The transparent sucker of hard osculum、Hard conduit、Clip、Cuboid spring stop and " L " shape spring stop composition，The actinal surface of the described transparent sucker of hard osculum is perpendicular to horizontal plane，Described miniature laser diastimeter and high accuracy vacuum pressure sensor are separately mounted to middle-end and the end of hard conduit，Described clip and cuboid spring stop lay respectively at top and the bottom of this device，Vacuum heat-insulating plate to be detected is jointly fixed with " L " shape spring stop and the transparent sucker of hard osculum，The signal input computer that the miniature laser diastimeter of collection and high accuracy vacuum pressure sensor are transmitted by described radio system.
- 2. according to the device measuring vacuum heat-insulating plate internal pressure described in claim 1, it is characterised in that the sucker mouth of the described transparent sucker of hard osculum thickeies, and inside sucker mouth, circular diameter is between 1 ~ 4cm, and outside sucker mouth, circular diameter is between 8 ~ 12cm.
- 3. according to the device measuring vacuum heat-insulating plate internal pressure described in claim 1, it is characterised in that the height of described " L " shape spring stop is between 0.6 ~ 2m.
- 4. according to the device measuring vacuum heat-insulating plate internal pressure described in claim 1, it is characterised in that described horizontal alignment frame can ensure that conduit is placed in the horizontal direction, and sucker actinal surface is perpendicular to horizontal plane.
- 5. the method for testing of the device measuring vacuum heat-insulating plate internal pressure utilized described in claim 1, it is characterised in that include the step of following sequence:(1) vacuum heat-insulating plate is vertically placed on " L " shape spring stop；(2) being stepped up by vacuum heat-insulating plate top clip, bottom cuboid spring stop withstands；(3) vacuum heat-insulating plate contacts along with the thrust of left side spring moves right with the transparent sucker of hard osculum and fixes；(4) sundstrand pump is started working, and constantly takes air away, makes the pressure in conduit and sucker constantly reduce；(5) probe distance to Obstruct membrane recorded by miniature laser diastimeter, and high accuracy vacuum pressure sensor records the pressure values of constantly reduction；(6) radio system by miniature laser diastimeter and the high accuracy signal collection that transmits of vacuum pressure sensor and inputs computer, and forms image and data base；(7) when in sucker, the pressure of gas arrives pressure values in plate, Obstruct membrane can be heaved moment, also can there is fluctuation suddenly in miniature laser diastimeter, record this moment high accuracy pressure values shown by vacuum pressure sensor, be the pressure values of vacuum insulation intralaminar part.
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| CN201210279357.9A CN103575459B (en) | 2012-08-08 | 2012-08-08 | The measurement apparatus of a kind of vacuum heat-insulating plate internal pressure and method of testing thereof |
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| CN201210279357.9A CN103575459B (en) | 2012-08-08 | 2012-08-08 | The measurement apparatus of a kind of vacuum heat-insulating plate internal pressure and method of testing thereof |
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| CN111749539A (en) * | 2020-07-02 | 2020-10-09 | 吴少强 | Make things convenient for road and bridge engineering construction of dismouting to use safety device |
| CN114791332B (en) * | 2022-04-06 | 2023-09-15 | 安徽蓝格利通新材应用股份有限公司 | Automatic detection device for vacuum insulation panels |
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|---|---|---|---|---|
| DE10159518A1 (en) * | 2001-12-04 | 2003-06-12 | Kerspe Jobst H | Vacuum insulation panel with an integrated pressure monitoring system comprises a foil cover which also serves as a measuring membrane |
| CN1646890A (en) * | 2002-04-06 | 2005-07-27 | 瓦克技术股份公司 | Determination of the gas pressure in an evacuated thermal insulating board (vacuum panel) by using a heat sink and test layer that are integrated therein |
| CN1945297A (en) * | 2006-10-23 | 2007-04-11 | 厦门高特高新材料有限公司 | Method for detecting baffle film leakage rate for vacuum heat insulation board |
| CN101788443A (en) * | 2010-01-29 | 2010-07-28 | 翟传伟 | Prediction method for service life of vacuum thermal-insulation plate |
| CN102012382A (en) * | 2010-10-25 | 2011-04-13 | 上海海事大学 | Heat conductivity coefficient quick test device and method of vacuum insulating board |
| CN202033154U (en) * | 2010-12-24 | 2011-11-09 | 厦门大学 | Vacuum degree detection device of vacuum thermal insulation board |
-
2012
- 2012-08-08 CN CN201210279357.9A patent/CN103575459B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10159518A1 (en) * | 2001-12-04 | 2003-06-12 | Kerspe Jobst H | Vacuum insulation panel with an integrated pressure monitoring system comprises a foil cover which also serves as a measuring membrane |
| CN1646890A (en) * | 2002-04-06 | 2005-07-27 | 瓦克技术股份公司 | Determination of the gas pressure in an evacuated thermal insulating board (vacuum panel) by using a heat sink and test layer that are integrated therein |
| CN1945297A (en) * | 2006-10-23 | 2007-04-11 | 厦门高特高新材料有限公司 | Method for detecting baffle film leakage rate for vacuum heat insulation board |
| CN101788443A (en) * | 2010-01-29 | 2010-07-28 | 翟传伟 | Prediction method for service life of vacuum thermal-insulation plate |
| CN102012382A (en) * | 2010-10-25 | 2011-04-13 | 上海海事大学 | Heat conductivity coefficient quick test device and method of vacuum insulating board |
| CN202033154U (en) * | 2010-12-24 | 2011-11-09 | 厦门大学 | Vacuum degree detection device of vacuum thermal insulation board |
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Inventor after: Chen Zhaofeng Inventor after: Zhu Wanping Inventor after: Li Chengdong Inventor after: Chen Qing Inventor after: Zhou Jieming Inventor after: Li Binbin Inventor before: Chen Zhaofeng Inventor before: Zhu Wanping Inventor before: Chen Qing Inventor before: Zhou Jieming Inventor before: Li Binbin |
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Effective date of registration: 20191126 Address after: Room 2321, building 1, No. 268, Jiqingmen street, Gulou District, Nanjing City, Jiangsu Province Patentee after: Xu Lijiang Address before: Taicang City, Yan Shan Xi Lu Suzhou 215400 Jiangsu province No. 136 Patentee before: SUZHOU V.I.P. NEW MATERIAL CO., LTD. |