CN101832448B - Heat insulation layer structure - Google Patents
Heat insulation layer structure Download PDFInfo
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- CN101832448B CN101832448B CN2010101821021A CN201010182102A CN101832448B CN 101832448 B CN101832448 B CN 101832448B CN 2010101821021 A CN2010101821021 A CN 2010101821021A CN 201010182102 A CN201010182102 A CN 201010182102A CN 101832448 B CN101832448 B CN 101832448B
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- heat insulation
- insulation layer
- fixed block
- layer structure
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Abstract
The invention discloses a heat insulation layer structure which comprises a fixing plate (5) and a covering plate (2), wherein the covering plate (2) is fixed and connected with the fixing plate (5) through a primary fixing piece (1) and a secondary fixing piece (3); heat insulation material (4) is paved between the covering plate (2) and the fixing plate (5); a sealing film (7) is arranged on the heat insulation material (4); the primary fixing piece (1) is positioned in the middle of the covering plate (2); and the secondary fixing piece (3) is positioned on the periphery of the covering plate (2). The invention breaks through the limitation of the application field of the common heat insulation structure, can be applied to large-scale heat insulation of gas media of high temperature, high speed and high pressure, and solves the problem of the heat expansion generated on both sides of the heat insulation layer due to different temperatures.
Description
Technical field
The present invention relates to the heat enginnering technical field, particularly relate to a kind of heat insulation layer structure.
Background technique
In the thermodynamic system field, can lay a large amount of thermal insulation layers usually.Its function mainly comprise following some:
1) hot-cool environment in the equipment is separated, reduce heat loss.For example lay one deck thermal insulation layer in order to reduce thermal loss regular meeting at the outer surface of high-temperature service and pipeline.
2) cold and hot parts in the equipment are separated, guarantee that the ambient temperature of cold parts is lower than its design temperature limit value.The thermal insulating material of the filling during for example gas cooled reactor steam generator main steam ozzle hot jacket is tucked inside the sleeve.
3) when the temperature difference of same parts both sides is big, lay the thermal stress that thermal-protective coating can reduce parts.The thermal insulation layer of laying in the gas cooled reactor steam generator main steam bobbin carriage outside for example is to reduce the thermal stress at channel flange place.
In general thermodynamic system, first kind of function of thermal insulation layer is the most common, and prevents that normally heat is from the loss of thermodynamic system to atmosphere environment.Because this thermal insulation layer generally is layed in the outside of heat power equipment, and the outside of thermal insulation layer contacts with atmosphere environment.This heat insulation layer structure is generally all fairly simple, wraps up layer protective layer (metal or nonmetal and mortar float coat) after laying thermal insulating material.When the outside of protective layer surrounding medium had high flow velocities, protective layer must be selected sheetmetal for use.When thermal insulating material acts on the load ratio of protective layer when big, generally need the support or the fixed structure of design protection layer.As can be seen, protective layer is usually located at low temperature side from above elaboration, and structure member (mainly bearing mechanical load) then is positioned at high temperature side.
Continuous development along with thermodynamic system, the situation that many requirements are incubated under high temperature or superhigh temperature has appearred, and the temperature difference of thermal insulation layer both sides is very big, the radial dimension of thermal insulation layer is also very big, for example the insulating structure of steam generator hot-zone and the insulating structure of Intermediate Heat Exchanger heat exchanger pipe bundle etc. in the high temperature gas cooled reactor and in the very high temperature gas cooled reactor.Because the raising of medium temperature, the parts of bearing load can not directly contact with the gas medium of high temperature, need it is adjacent with the cold side medium, have enough mechanical strengths to guarantee material.At this moment, the protective layer of thermal insulation layer contacts with high-temperature gas, and adopts metallic material as protective layer.Protective layer does not bear other mechanical loads except the clamping force of the thermal insulating material that bears.But arrange that so the problem of bringing is: because fixed structure is different with the residing ambient temperature of protective layer, the thermal expansion amount of the two is also different.When hot operation, the residing ambient temperature height of protective layer, the axial thermal expansion amount is big; The residing ambient temperature of fixed body is low, and axial thermal expansion amount is less relatively.When hot, protective layer can outwards bloat.When returning to cold conditions, protective layer can return to original state again.When the equipment start-stop once, protective layer is with regard to circulation primary.In addition, when the temperature difference of thermal insulation layer both sides is very big, and the radial dimension of thermal insulation layer is when big, and protective layer and fixed body thermal expansion difference radially also can be very big, and this is all bad to the thermal insulating material that fill inside, can cause the damage of thermal insulating material.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is to overcome the defective that existing heat insulation layer structure exists, and avoids damaging because of the distortion and the thermal insulating material of the different protective layers that cause of thermal insulation layer both sides temperature in the insulating process of high-temperature gas.
(2) technological scheme
For solving the problems of the technologies described above, a kind of heat insulation layer structure is provided, it comprises: fixed plate, the overlay of fixedlying connected with described fixed plate by fixed block and secondary fixed block, between described overlay and fixed plate, be equipped with thermal insulating material, described thermal insulating material is provided with sealing film, and described every overlay (2) is equipped with a fixed block (1) and secondary fixed block (3); A described fixed block is positioned at the neutral position of described overlay, and described secondary fixed block is positioned at the peripheral position of described overlay.
Preferably, described fixed plate is positioned at low temperature side, and described overlay is positioned at high temperature side.
Preferably, the convection current proof film that also comprises the inside that is layed in described thermal insulating material.
Preferably, described thermal insulating material is the fine class thermal insulating material in ore deposit, perhaps loose class thermal insulating material.
Preferably, described sealing film is a sheetmetal, or the wire gaze of multilayer.
Preferably, a described fixed block is fixing by being threaded with described fixed plate, and a perhaps described fixed block and described fixed plate are by being threaded and fixing through welding.
Preferably, described secondary fixed block is fixing by being threaded with described fixed plate, and perhaps described secondary fixed block and described fixed plate are by being threaded and fixing through welding.
Preferably, in described secondary fixed block, be provided with roller.
Preferably, described overlay and described fixed plate are dull and stereotyped.
Preferably, described overlay and described fixed plate are the bent plate that has radian.
Preferably, be equipped with thermal insulating material in the screw rod of a described fixed block and described secondary fixed block.
(3) beneficial effect
The present invention is used for fixing heat insulation layer structure by fixed plate is set, and is positioned at low temperature side, and when having pressure reduction with the both sides of convenient heat insulation layer structure, fixed plate bears the pressure reduction of thermal insulation layer both sides, and has seal action; Be positioned at the overlay center and fixed support structure is on every side played a supporting role to overlay together; Overlay is positioned at the high temperature side of heat insulation layer structure, the slit of reserving between the overlay be convenient to overlay when hot to around freely expand; Thermal insulating material can be used for reducing the heat output of thermal insulation layer both sides; The convection current proof film is layed in thermal insulating material inside, is used to reduce the convection heat exchange amount of thermal insulating material inside.This structure has broken through the use narrow limitation of common insulating structure, can be applied to high temperature, at a high speed, the large scale insulation of the gas medium of high pressure, solved the different and thermal expansion problem that produces of thermal insulation layer both sides Yin Wendu.
Description of drawings
Fig. 1 is the sectional arrangement drawing (right side is a high-temperature gas) of the heat insulation layer structure of a kind of vertical placement of the embodiment of the invention;
Fig. 2 is the sectional arrangement drawing (upside is a high-temperature gas) of the heat insulation layer structure of a kind of horizontal positioned of another embodiment of the present invention;
Fig. 3 is the sectional arrangement drawing (inboard upside is a high-temperature gas) of a kind of columnar heat insulation layer structure of another embodiment of the present invention;
Fig. 4 is a kind of structural representation that adopts pressing plate as the heat insulation layer structure of secondary fixed block of further embodiment of this invention;
Fig. 5 has the structural representation of heat insulation layer structure of the secondary fixed block of roller for further embodiment of this invention a kind of.
Wherein, 1: fixed block; 2: overlay; 3: the secondary fixed block; 4: thermal insulating material; 5: fixed plate; 6: the convection current proof film; 7: sealing film.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
The invention provides a kind of heat insulation layer structure, comprise fixed block 1, overlay 2, secondary fixed block 3, thermal insulating material 4 and fixed plate 5 No. one time, described overlay 2 is fixedlyed connected with described fixed plate 5 with secondary fixed block 3 by a fixed block 1, between described overlay 2 and fixed plate 5, be equipped with thermal insulating material 4, described thermal insulating material 4 is provided with sealing film 7, a described fixed block 1 is positioned at the neutral position of described overlay 2, and described secondary fixed block 3 is positioned at the peripheral position of described overlay 2.Can set up convection current proof film 6 in thermal insulating material 4 inside according to concrete actual requirement, be used to reduce the convection heat exchange amount of thermal insulating material inside, also can convection current film 6 in the air when the thickness of the heat insulation layer structure temperature difference little or the heat insulation layer structure both sides are little.Fixed plate 5 is used for fixing heat insulation layer structure, and is positioned at low temperature side, and when having pressure reduction with the both sides of convenient thermal insulation layer, fixed cylinder bears the pressure reduction of thermal insulation layer both sides.Described thermal insulating material 4 is used to reduce the heat output of thermal insulation layer both sides, requires to have very little thermal conductivity.Consider the heat insulation layer structure reliability of operation, certain requirement can be arranged the filling density of thermal insulating material 4, it can be the fine class thermal insulating material in ore deposit, for example rock wool, felt, cotton felt etc.; Perhaps loose class thermal insulating material, aluminium silicate wool for example, aluminum silicate fiber etc.When the moist closet that is applied to plane structure, fixed plate 5 and the overlay 2 preferred flat boards that adopt, when being used for columnar structured insulation, fixed plate 5 and overlay 2 can be the bent plates that has radian.Preferably, can lay sealing film 7, prevent that thermal insulating material 4 is scattered in the gas medium on the surface of thermal insulating material 4.Described sealing film 7 can be a sheetmetal, or the wire gaze of multilayer.Under the situation with sealing film 7, overlay 2 is provided with near sealing film 7, and is adjacent with high temperature gas medium.Be provided with the gap between the overlay 2, when hot, overlay can be that basic point is to free expansion all around with a fixed block.In the design, overlay is not as pressure-bearing boundary; But (for example pressure release accident) in some cases, overlay may also can bear certain pressure.The overlay size is relevant with its maximum load of bearing.A fixed block 1 of the present invention and secondary fixed block 3 all adopt simultaneously and are threaded and weld two kinds of different modes and fix, and after guaranteeing that a kind of means of fixation lost efficacy, another kind of means of fixation still can guarantee the integrity of heat insulation layer structure.Fixed block 1 and secondary fixed block 3 also can reasonably be selected a kind of means of fixation for use according to concrete actual demand.To overlay frictional force, can in secondary fixed block 3, roller construction be set when reducing hot expansion.The structurally-fixed mode of secondary fixed block 3 is the bolt mode, also can adopt the mode of pressing plate to fix.Heat insulation layer structure of the present invention not only can be used for the insulation of gas-gas, also can be used for the gas-liquid insulation, and this moment, liquid phase was positioned at fixed plate 5 one sides, and described overlay 2 and fixed plate 5 can be according to the variations of both sides temperature height and transposition.The modes of emplacement of described heat insulation layer structure comprises: vertical placement, horizontal placement or arbitrarily angled placement.
When carrying out the installation of insulating structure, at first that 3 screw portion and fixed plate 5 of fixed block 1 and secondary fixed block is fixing.Concrete fixing mode can be one or more fixing means (comprise be threaded, welding etc.).Then on fixed plate, lay thermal insulating material 4, when thermal insulating material 4 is laid extremely suitable position, lay convection current proof film 6.Then lay thermal insulating material 4 to suitable thickness after having spread convection current proof film 6.Simultaneously, also need the certain thermal insulating material 4 of screw rod laid inside, pass transmission capacity with the heat that reduces screw rod at fixed block 1 and secondary fixed block 3.Then lay one deck sealing film 7, be close to sealing film 7 overlay 2 is installed at the top of thermal insulating material.At the nut of a fastening fixed block 3 and secondary fixed block 5,, must install the back at nut it is carried out spot welding then in order to guarantee the nut reliability of fixation.
Embodiment one
A kind of sectional arrangement drawing of heat insulation layer structure of vertical placement (right side is a high-temperature gas) as shown in Figure 1.When high temperature gas medium vertically flowed, heat insulation layer structure must vertically be placed.In situation shown in Figure 1, high-temperature gas is positioned at the right side, and at this moment overlay 2 is positioned at the right side, and fixed plate 5 is positioned at the left side.Overlay 5 is fixed on the fixed plate 5 by fixed block 1 and secondary fixed block 3.Thermal insulating material 4 is filled between overlay 2 and the fixed plate 5, and the stream film 6 of being rivals in a contest is laid in suitable position in thermal insulating material 4.Adjacent overlay 2 is equipped with sealing film 7.So form a complete heat insulation layer structure.
Embodiment two
A kind of sectional arrangement drawing of heat insulation layer structure of horizontal positioned (upside is a high-temperature gas) as shown in Figure 2.Present embodiment and embodiment's one heat insulation layer structure is similar, and itself and embodiment's one difference is: this heat insulation layer structure is that substantially horizontal is arranged.
Embodiment three
A kind of sectional arrangement drawing of columnar heat insulation layer structure (inboard upside is a high-temperature gas) as shown in Figure 3.Present embodiment and embodiment's one heat insulation layer structure is similar, and itself and embodiment's one difference is: the structure of insulation is a cylindrical shape, at this moment requires relevant fixed component such as fixed plate, overlay all need change the sheet material that has certain curvature into.
Embodiment four
A kind of adopt pressing plate as the heat insulation layer structure of secondary fixed block 3 shown in Fig. 4 (a)-(b).Present embodiment and embodiment's one heat insulation layer structure is similar, and itself and embodiment's one difference is: secondary fixed block 3 adopts the means of fixation of pressing plates, and pressing plate is positioned at the intermediate portion at overlay 2 edges.This being arranged in when designing will be considered pressing plate and the thermal compensation of overlay 2 when hot, and available bellows etc. compensate.
Embodiment five
A kind of heat insulation layer structure of the secondary fixed block 3 that has a roller as shown in Figure 5.Present embodiment and embodiment's one heat insulation layer structure is similar, and itself and embodiment's one difference is: the pad place of secondary fixed block 3 has installed the roller that is used to reduce friction additional.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (10)
1. heat insulation layer structure, it is characterized in that, comprise: fixed plate (5), some overlays (2) of fixedlying connected with described fixed plate (5) by a fixed block (1) and secondary fixed block (3), between described overlay (2) and fixed plate (5), be equipped with thermal insulating material (4), go up at described thermal insulating material (4), be close to described overlay (2) and be provided with sealing film (7), described every overlay (2) is equipped with a fixed block (1) and secondary fixed block (3); A described fixed block (1) is positioned at the neutral position of described overlay (2), and described secondary fixed block (3) is positioned at the peripheral position of described overlay (2), has the gap between described each overlay (2).
2. heat insulation layer structure as claimed in claim 1 is characterized in that, also comprises being layed in the inner convection current proof film (6) of described thermal insulating material (4).
3. heat insulation layer structure as claimed in claim 1 or 2 is characterized in that, described thermal insulating material (4) is the fine class thermal insulating material in ore deposit, perhaps loose class thermal insulating material.
4. heat insulation layer structure as claimed in claim 1 or 2 is characterized in that, described sealing film (7) is a sheetmetal, or the wire gaze of multilayer.
5. heat insulation layer structure as claimed in claim 1 is characterized in that, a described fixed block (1) is fixing by being threaded with described fixed plate (5), and a perhaps described fixed block (1) and described fixed plate (5) are by being threaded and fixing through welding.
6. heat insulation layer structure as claimed in claim 1 is characterized in that, described secondary fixed block (3) is fixing by being threaded with described fixed plate (5), and perhaps described secondary fixed block (3) and described fixed plate (5) are by being threaded and fixing through welding.
7. heat insulation layer structure as claimed in claim 1 or 2 is characterized in that, is provided with roller in described secondary fixed block (3).
8. heat insulation layer structure as claimed in claim 1 or 2 is characterized in that, described overlay (2) and described fixed plate (5) are dull and stereotyped.
9. heat insulation layer structure as claimed in claim 1 or 2 is characterized in that, described overlay (2) and described fixed plate (5) are for having the bent plate of radian.
10. as claim 5 or 6 described heat insulation layer structures, it is characterized in that, be equipped with thermal insulating material (4) in the screw rod of a described fixed block (1) and described secondary fixed block (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101821021A CN101832448B (en) | 2010-05-19 | 2010-05-19 | Heat insulation layer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101821021A CN101832448B (en) | 2010-05-19 | 2010-05-19 | Heat insulation layer structure |
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| Publication Number | Publication Date |
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| CN101832448A CN101832448A (en) | 2010-09-15 |
| CN101832448B true CN101832448B (en) | 2011-12-28 |
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| CN2010101821021A Active CN101832448B (en) | 2010-05-19 | 2010-05-19 | Heat insulation layer structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017127327A1 (en) * | 2016-01-18 | 2017-07-27 | Unifrax I Llc | Thermal insulation composite for solar thermal tower, solar thermal tower and energy generation system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240653A (en) * | 2015-11-11 | 2016-01-13 | 浙江创想节能科技有限公司 | Ultrahigh-temperature resisting detachable insulation sleeve |
| CN112854505A (en) * | 2021-03-03 | 2021-05-28 | 上海核工程研究设计院有限公司 | Insulation construction with function of making an uproar falls in sound insulation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2945921A1 (en) * | 1979-11-14 | 1981-05-27 | Hochtemperatur-Reaktorbau GmbH, 5000 Köln | Thermal insulation for concrete reactor vessel - of highly permeable foil structure has sealed facing sheet preventing convection currents |
| CN2191339Y (en) * | 1994-04-06 | 1995-03-08 | 辽河石油勘探局勘察设计研究院 | Thermal insulation pipe carrier |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11182782A (en) * | 1997-12-16 | 1999-07-06 | Ishikawajima Harima Heavy Ind Co Ltd | Heat insulating material compression-fitting device |
| AUPP483298A0 (en) * | 1998-07-23 | 1998-08-13 | Bains Harding Limited | Insulation module for vessels |
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2010
- 2010-05-19 CN CN2010101821021A patent/CN101832448B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2945921A1 (en) * | 1979-11-14 | 1981-05-27 | Hochtemperatur-Reaktorbau GmbH, 5000 Köln | Thermal insulation for concrete reactor vessel - of highly permeable foil structure has sealed facing sheet preventing convection currents |
| CN2191339Y (en) * | 1994-04-06 | 1995-03-08 | 辽河石油勘探局勘察设计研究院 | Thermal insulation pipe carrier |
Non-Patent Citations (1)
| Title |
|---|
| JP平11-182782A 1999.07.06 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017127327A1 (en) * | 2016-01-18 | 2017-07-27 | Unifrax I Llc | Thermal insulation composite for solar thermal tower, solar thermal tower and energy generation system |
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| CN101832448A (en) | 2010-09-15 |
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Effective date of registration: 20210120 Address after: 100193 building 26, Zhongguancun Software Park, 8 Dongbeiwang West Road, Haidian District, Beijing Patentee after: CHINERGY Co.,Ltd. Address before: 100084 mailbox, 100084-82 Tsinghua Yuan, Beijing, Haidian District, Beijing Patentee before: TSINGHUA University |