CN105548248B - A kind of assembling structure that miniature scale test specimen is installed in pipe - Google Patents
A kind of assembling structure that miniature scale test specimen is installed in pipe Download PDFInfo
- Publication number
- CN105548248B CN105548248B CN201510931930.3A CN201510931930A CN105548248B CN 105548248 B CN105548248 B CN 105548248B CN 201510931930 A CN201510931930 A CN 201510931930A CN 105548248 B CN105548248 B CN 105548248B
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- CN
- China
- Prior art keywords
- assembling structure
- test element
- vacuum pipe
- test specimen
- miniature scale
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
- F16L5/06—Sealing by means of a swivel nut compressing a ring or sleeve
Abstract
A kind of assembling structure that miniature scale test specimen is installed in pipe,Including two relative vacuum pipe external parts,Test element is vertically set in vacuum pipe by vacuum pipe external part,Test element both ends and current feed,Voltage lead connects,Current feed,Voltage lead is interior through thin ceramic tubes and is fixed by flowing glue,Thin ceramic tubes are fixed in support tubule by glue,Support tubule passes through clamp nut,Sealing gasket and throw-out collar are connected with vacuum pipe external part,Present invention can ensure that minute yardstick test element is vertically put into vacuum pipe,And both ends are tightened,There is no relaxation,Sealing property keeps good,It is separate between test element and vacuum pipe,It is easy to different tests replacement of element and dismounting,Test element both ends difference extracted current lead and voltage lead simultaneously,It is easy to four-wire system method to measure,So as to improve experiment measurement accuracy.
Description
Technical field
The present invention relates to assemble technical field in pipe, and in particular to a kind of dress that miniature scale test specimen is installed in pipe
Distribution structure.
Background technology
Because the actual condition for body forced-convection heat transfer of being preyed outside low density gas is very few, scholar carries out basic research to it
Enthusiasm is not high, corresponding experimental facilities and technological means also imperfection, but flourishing with industry, to ensure heat transmission equipment
Careful design, the basic research of low density gas heat transfer characteristic becomes very important, such as large-scale vacuum environmental capsule, vacuum tube
Road magnetic suspension train etc. in succession build, and in low vacuum equipment or instrument accurate thermal design, still lack experimental data；Mars is made
The next celestial body for preparing to log in for the mankind, the phenomenon is especially prominent, because the atmospheric density of Mars only has the 1% of the earth, but
It is again thin unlike lunar atmosphere, still lack accurate design for Mars lander heat management.
General gas flow rarified flow is described by Knudsen number (Kn), and it is defined as the mean free path between molecule
The ratio between (λ) and object features length (L), Knudsen number (Kn) is bigger, and gas is thinner.Mean free path (λ) between molecule
It is relevant with gas temperature, pressure, in the case of temperature-resistant, gas pressure can be reduced to increase being averaged certainly between molecule
By journey (λ), so that Knudsen number (Kn) increases, but this method can increase experiment cost of investment, because wanting to obtain more
Big Knudsen number (Kn), it is necessary to the stronger vavuum pump of pumpage and related pressure control device.And object features are grown
It when degree is decreased to minute yardstick, also can accordingly increase Knudsen number (Kn), to describe gas rarefied content, and then study low density gas
Heat transfer characteristic, while the cost of investment of experiment is reduced, but be the assembly problem of test element the drawbacks of this method, for minute yardstick
Test element is put into inside pipe, four important technological difficulties be present：1. test element vertically will be put into inside pipe；2. try
Testing element both ends will tighten, and without relaxation, for minute yardstick test element, during tightening, be easy to break；
3. the sealing property that test element is put into vacuum pipe will keep good, prevent extraneous gas from leaking into；4. test element both ends
Two wires are drawn respectively.Therefore a kind of new assembling structure is needed to overcome above mentioned problem.
The content of the invention
The shortcomings that in order to overcome above-mentioned prior art, small chi is installed it is an object of the invention to provide one kind in pipe
Spend the assembling structure of test specimen, it is ensured that minute yardstick test element is vertically put into vacuum pipe, and both ends are tightened, and relaxation is not existing
As sealing property keeps good, is easy to different tests replacement of element and dismounting, is easy to four-wire system method to measure, and improves experiment
Measurement accuracy.
In order to achieve the above object, the present invention takes following technical scheme：
A kind of assembling structure that miniature scale test specimen is installed in pipe, including two relative vacuum pipe external parts 3,
Test element 1 is vertically set in vacuum pipe by vacuum pipe external part 3, and the end points a of the one end of test element 1 draws with electric current
Line 8 is connected, and the end points b at the end is connected with voltage lead 9；The end points d of the other end of test element 1 is connected with another current feed 8,
The end points c at the end is connected with another voltage lead 9；Current feed 8, voltage lead 9 are interior through thin ceramic tubes 2 and by flowing glue
Fixed, current feed 8, the termination of voltage lead 9 stretch out thin ceramic tubes 2, and thin ceramic tubes 2 are fixed on support tubule 7 by glue 10
Interior, the termination of thin ceramic tubes 2 is stretched out outside support tubule 7, and support tubule 7 passes through clamp nut 4, sealing gasket 5 and throw-out collar 6 and vacuum
Pipe external part 3 connects.
The test element 1 is the tungsten filament of micron dimension, has high temperature coefficient of resistance, resistivity and tensile strength, i.e.,
Make heating element heater, be used as measuring cell and test element again.
The current feed 8 is copper wire, a diameter of 0.5mm, is heated for providing electric current.
The voltage lead 9 is constantan wire, a diameter of 0.05mm, for measuring the both ends b-c of test element 1 voltage, is subtracted
Small axial thermal conductivity, it is easy to accurately measure.
The vacuum pipe external part 3 is lucite, is easy to the observation of installation and the experiment of structure.
The thin ceramic tubes 2 are provided with two apertures, for extracted current lead 8 and voltage lead 9.
The thin ceramic tubes 2 are fixed in support tubule 7 by glue 10, and idiographic flow is first to be fixed carefully with quick fixing glue
Earthenware 2, then reinforced with epoxide-resin glue, finally sealed with organic silica gel, reach fixed and sealing double effect.
The flowing glue is two-component high transparency epoxy resin.
The sealing gasket 5 is rubber packing material, by screwing clamp nut 4, extrudes throw-out collar 6, deforms sealing gasket 5,
Reach the sealing between support tubule 7 and vacuum pipe external part 3.
The support tubule 7 is copper pipe.
Beneficial effects of the present invention：
Assembling structure of the present invention can ensure that minute yardstick test element is vertically put into vacuum pipe, and both ends are tightened, and are not had
Relaxation, sealing property keep good.It is separate between test element and vacuum pipe, is easy to different tests element
Replacing and dismounting.Two wires are drawn at test element both ends respectively, are easy to four-wire system method to measure, so as to improve experiment measurement
Precision.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Reference picture 1, a kind of assembling structure that miniature scale test specimen is installed in pipe, including two relative vacuum pipes
External part 3, test element 1 are vertically set in vacuum pipe by vacuum pipe external part 3, the end points a of the one end of test element 1
It is connected with current feed 8, the end points b at the end is connected with voltage lead 9；The end points d of the other end of test element 1 draws with another electric current
Line 8 is connected, and the end points c at the end is connected with another voltage lead 9；Current feed 8, voltage lead 9 is interior through thin ceramic tubes 2 and leads to
Cross flowing glue to fix, thin ceramic tubes 2 are stretched out in current feed 8, the termination of voltage lead 9, and thin ceramic tubes 2 are fixed on branch by glue 10
Support in tubule 7, the termination of thin ceramic tubes 2 is stretched out outside support tubule 7, and support tubule 7 passes through clamp nut 4, sealing gasket 5 and throw-out collar
6 are connected with vacuum pipe external part 3.
The test element 1 is the tungsten filament of micron dimension, has high temperature coefficient of resistance, resistivity and tensile strength, i.e.,
Make heating element heater, be used as measuring cell and test element again.
The current feed 8 is copper wire, a diameter of 0.5mm, is heated for providing electric current.
The voltage lead 9 is constantan wire, a diameter of 0.05mm, for measuring the both ends b-c of test element 1 voltage, is subtracted
Small axial thermal conductivity, it is easy to accurately measure.
The vacuum pipe external part 3 is lucite, is easy to the observation of installation and the experiment of structure.
The thin ceramic tubes 2 are provided with two apertures, for extracted current lead 8 and voltage lead 9.
The thin ceramic tubes 2 are fixed in support tubule 7 by glue 10, and idiographic flow is first to be fixed carefully with quick fixing glue
Earthenware 2, then reinforced with epoxide-resin glue, finally sealed with organic silica gel, reach fixed and sealing double effect, its is quick
The characteristics of solidification glue is quick solidifying, but very crisp, and bonding is insecure；The characteristics of epoxide-resin glue is to be firmly bonded, but hardening time
It is very slow；The characteristics of organic silica gel is that have certain flexibility after solidifying, and mainly plays vacuum sealing.
The flowing glue is two-component high transparency epoxy resin, good fluidity.
The sealing gasket 5 is rubber packing material, by screwing clamp nut 4, extrudes throw-out collar 6, deforms sealing gasket 5,
Reach the sealing between support tubule 7 and vacuum pipe external part 3.
The support tubule 7 is copper pipe, is easy to the processing of external diameter and endoporus.
The present invention operation principle be：In vacuum circular tube outside, current feed 8 and voltage lead 9 are first passed through into fine ceramic
Pipe 2, and with flowing glue embedding, wherein current feed 8 provide electric current, and voltage lead 9 is used for measuring the both ends b-c of test element 1
Voltage, flow adhesive curing after, by constant temperature electric iron, two current feeds 8 are respectively welded in test element a ends and d ends,
Two voltage leads 9 are respectively welded in test element b ends and c ends, by the current feed 8, voltage lead of the one end of test element 1
9 gently pass through left side from the right side of vacuum pipe external part 3, and then thin ceramic tubes 2 are put into support tubule 7, while support thin
Pipe 7 is inserted in vacuum pipe external part 3, sealing gasket 5 and throw-out collar 6 is inserted in support tubule 7, by screw on nut 4, extruding pushes away
Ring 6, sealing gasket 5 is deformed, reach vacuum pipe external part 3 and support the vacuum sealing between tubule 7；Then fixed with glue 10
Support tubule 7 and thin ceramic tubes 2 with the right side of sealing vacuum pipe, reach vacuum-packed effect.
Present invention can ensure that minute yardstick test element 1 is vertically put into vacuum pipe, and both ends are tightened, and relaxation is not existing
As sealing property keeps good, and is separate between test element 1 and vacuum pipe, is easy to different tests element 1
Change and dismantle, while the both ends of test element 1 difference extracted current lead 8 and voltage lead 9, it is easy to four-wire system method to measure,
So as to improve experiment measurement accuracy.
Claims (10)
1. a kind of assembling structure that miniature scale test specimen is installed in pipe, including two relative vacuum pipe external parts (3),
It is characterized in that：Test element (1) is vertically set in vacuum pipe by vacuum pipe external part (3), test element (1) one
The end points a at end is connected with current feed (8), and the end points b at the end is connected with voltage lead (9)；The end of test element (1) other end
Point d is connected with another current feed (8), and the end points c at the end is connected with another voltage lead (9)；Current feed (8), voltage draw
Line (9) is interior through thin ceramic tubes (2) and is fixed by flowing glue, and thin pottery is stretched out in current feed (8), the termination of voltage lead (9)
Porcelain tube (2), thin ceramic tubes (2) are fixed in support tubule (7) by glue (10), and support is stretched out carefully in the termination of thin ceramic tubes (2)
Manage (7) outside, support tubule (7) is connected by clamp nut (4), sealing gasket (5) and throw-out collar (6) with vacuum pipe external part (3).
A kind of 2. assembling structure that miniature scale test specimen is installed in pipe according to claim 1, it is characterised in that：Institute
The tungsten filament that test element (1) is micron dimension is stated, there is high temperature coefficient of resistance, resistivity and tensile strength, both make heating unit
Part, measuring cell and test element are used as again.
A kind of 3. assembling structure that miniature scale test specimen is installed in pipe according to claim 1, it is characterised in that：Institute
It is copper wire to state current feed (8), a diameter of 0.5mm, is heated for providing electric current.
A kind of 4. assembling structure that miniature scale test specimen is installed in pipe according to claim 1, it is characterised in that：Institute
It is constantan wire to state voltage lead (9), a diameter of 0.05mm, for measuring test element (1) both ends b-c voltage, is reduced axially
Heat conduction, it is easy to accurately measure.
A kind of 5. assembling structure that miniature scale test specimen is installed in pipe according to claim 1, it is characterised in that：Institute
It is lucite to state vacuum pipe external part (3), is easy to the observation of installation and the experiment of structure.
A kind of 6. assembling structure that miniature scale test specimen is installed in pipe according to claim 1, it is characterised in that：Institute
State thin ceramic tubes (2) and be provided with two apertures, for extracted current lead (8) and voltage lead (9).
A kind of 7. assembling structure that miniature scale test specimen is installed in pipe according to claim 1, it is characterised in that：Institute
State thin ceramic tubes (2) to be fixed in support tubule (7) by glue (10), idiographic flow is first to fix fine ceramic with quick fixing glue
Manage (2), then reinforced with epoxide-resin glue, finally sealed with organic silica gel, reach fixed and sealing double effect.
A kind of 8. assembling structure that miniature scale test specimen is installed in pipe according to claim 1, it is characterised in that：Institute
It is two-component high transparency epoxy resin to state flowing glue.
A kind of 9. assembling structure that miniature scale test specimen is installed in pipe according to claim 1, it is characterised in that：Institute
It is rubber packing material to state sealing gasket (5), by screwing clamp nut (4), extruding throw-out collar (6), deforms sealing gasket (5), reaches
Sealing between support tubule (7) and vacuum pipe external part (3).
A kind of 10. assembling structure that miniature scale test specimen is installed in pipe according to claim 1, it is characterised in that：
The support tubule (7) is copper pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510931930.3A CN105548248B (en) | 2015-12-12 | 2015-12-12 | A kind of assembling structure that miniature scale test specimen is installed in pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510931930.3A CN105548248B (en) | 2015-12-12 | 2015-12-12 | A kind of assembling structure that miniature scale test specimen is installed in pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105548248A CN105548248A (en) | 2016-05-04 |
| CN105548248B true CN105548248B (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510931930.3A Active CN105548248B (en) | 2015-12-12 | 2015-12-12 | A kind of assembling structure that miniature scale test specimen is installed in pipe |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107492982A (en) * | 2017-08-28 | 2017-12-19 | 南阳市领驭机械有限公司 | Novel disc-type braking motor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1234984A (en) * | 1967-06-20 | 1971-06-09 | Ferodo Sa | Joint for mounting a tube in a perforated plate, particularly for the manufacture of a heat exchanger |
| CN2109634U (en) * | 1992-01-04 | 1992-07-08 | 邮电部北京通信设备厂 | Insulation device for ac high voltage weak current read-in line |
| CN2781705Y (en) * | 2005-04-18 | 2006-05-17 | 李培华 | Electric heating tube |
| CN103259233A (en) * | 2013-04-17 | 2013-08-21 | 中国科学院等离子体物理研究所 | Active cooling type room temperature terminal used for current lead |
| CN104332248A (en) * | 2014-09-29 | 2015-02-04 | 中国科学院电工研究所 | Air cooled current lead wire used for superconducting power equipment |
| EP2863158A1 (en) * | 2012-09-28 | 2015-04-22 | Daikin Industries, Ltd. | Heat storage heat exchange device |
-
2015
- 2015-12-12 CN CN201510931930.3A patent/CN105548248B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1234984A (en) * | 1967-06-20 | 1971-06-09 | Ferodo Sa | Joint for mounting a tube in a perforated plate, particularly for the manufacture of a heat exchanger |
| CN2109634U (en) * | 1992-01-04 | 1992-07-08 | 邮电部北京通信设备厂 | Insulation device for ac high voltage weak current read-in line |
| CN2781705Y (en) * | 2005-04-18 | 2006-05-17 | 李培华 | Electric heating tube |
| EP2863158A1 (en) * | 2012-09-28 | 2015-04-22 | Daikin Industries, Ltd. | Heat storage heat exchange device |
| CN103259233A (en) * | 2013-04-17 | 2013-08-21 | 中国科学院等离子体物理研究所 | Active cooling type room temperature terminal used for current lead |
| CN104332248A (en) * | 2014-09-29 | 2015-02-04 | 中国科学院电工研究所 | Air cooled current lead wire used for superconducting power equipment |
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| Publication number | Publication date |
|---|---|
| CN105548248A (en) | 2016-05-04 |
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Effective date of registration: 20210107 Address after: Jiefu Xiang Fudong Cun, Yongchun County, Quanzhou City, Fujian Province 362600 Patentee after: Yongchun County Jiefu Township Jinfa porcelain clay processing plant (general partnership) Address before: 710049 No. 28, Xianning Road, Xi'an, Shaanxi Patentee before: XI'AN JIAOTONG University |
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Effective date of registration: 20210223 Address after: No.910, building 1, Junyue Jiangshan, Liu'an Road, Taocheng Town, Yongchun County, Quanzhou City, Fujian Province 362600 Patentee after: Yongchun Hongyun Real Estate Information Service Co.,Ltd. Address before: Jiefu Xiang Fudong Cun, Yongchun County, Quanzhou City, Fujian Province 362600 Patentee before: Yongchun County Jiefu Township Jinfa porcelain clay processing plant (general partnership) |
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Effective date of registration: 20210309 Address after: Liu'an Development Zone, Yongchun County, Quanzhou City, Fujian Province (east side of Taoxi bridge) Patentee after: Yongchun County Product Quality Inspection Institute Fujian fragrance product quality inspection center, national incense burning product quality supervision and Inspection Center (Fujian) Address before: No.910, building 1, Junyue Jiangshan, Liu'an Road, Taocheng Town, Yongchun County, Quanzhou City, Fujian Province 362600 Patentee before: Yongchun Hongyun Real Estate Information Service Co.,Ltd. |
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