CN105910168A - Thermal insulation method of thermal insulation shelf used for special (ultra) high voltage electric reactor mounting - Google Patents
Thermal insulation method of thermal insulation shelf used for special (ultra) high voltage electric reactor mounting Download PDFInfo
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- CN105910168A CN105910168A CN201610232759.1A CN201610232759A CN105910168A CN 105910168 A CN105910168 A CN 105910168A CN 201610232759 A CN201610232759 A CN 201610232759A CN 105910168 A CN105910168 A CN 105910168A
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- Prior art keywords
- roof insulating
- canopy body
- support frame
- body support
- heat dissipation
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
- E04H5/04—Transformer houses; Substations or switchgear houses
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Thermal Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a thermal insulation method of thermal insulation shelf used for special (ultra) high voltage electric reactor mounting, relates to the technical field of special (ultra) high voltage electric reactor mounting, and solves a technical problem that a prior thermal insulation shelf is short in thermal insulation duration. An electric heater is mounted in the thermal insulation shelf. The method includes obtaining a unit time heat dissipation volume q1 of the thermal insulation shelf, wherein the unit time heat dissipation volume q1 of the thermal insulation shelf includes a unit time heat dissipation volume qd of the ceiling support of the thermal insulation shelf and a unit time heat dissipation volume qt of a shelf support of the thermal insulation shelf; obtaining a unit time heat dissipation volume q2 of the ground in the thermal insulation shelf; determining the unit time total heat dissipation volume qs of the thermal insulation shelf according to the unit time heat dissipation volume q1 of the thermal insulation shelf and the unit time heat dissipation volume q2 of the ground in the thermal insulation shelf, wherein qs=q1+q2; adjusting the power P of the electric heater to be equal to qs according to the unit time total heat dissipation volume qs of the thermal insulation shelf. The invention is applied to special (ultra) high voltage electric reactor mounting.
Description
Technical field
The present invention relates to spy's (surpassing) high-tension transformer mounting technique field, particularly relate to a kind of for special (surpassing) high pressure transformation
The heat preserving method of the roof insulating that device is installed.
Background technology
At present, special (surpassing) high-voltage fence construction has become a key construction project project, wherein, the spy of extremely frigid zones
(surpassing) high-voltage fence construction is the important component part of this engineering project.
For at the spy of extremely frigid zones (surpassing) high-voltage fence construction project, the subject matter in construction is, spy
In the installation process of (surpassing) high-tension transformer, the circulating temperature of the insulating oil in special (surpassing) high-tension transformer at about 65 DEG C, and
The ambient temperature of the extremely frigid zones such as northwest would generally reach-20 DEG C, thus can make this spy (surpassing) high-tension transformer
Internal-external temperature difference is excessive, and the thermal loss causing the insulating oil of spy's (surpassing) high-tension transformer is relatively big, causes spy's (surpassing) high-tension transformer
The temperature of insulating oil relatively low, thus affect the circulation of the insulating oil of spy's (surpassing) high-tension transformer, and then special (surpassing) high pressure of impact
The installation of transformer and follow-up stable operation.Therefore, in the installation process of special (surpassing) high-tension transformer, need to take certain
Insulation, meets temperature requirements when special (surpassing) high-tension transformer is installed.
In prior art, frequently with roof insulating, the installation of special (surpassing) high-tension transformer is incubated, but, the application's
Inventor finds, although existing roof insulating can play certain heat insulation effect, but owing to it lacks perfect thermal-insulating scheme, because of
This, the temperature retention time of existing roof insulating is shorter, it is impossible to meets in special (surpassing) high-tension transformer installation process and is incubated for a long time
Demand, have impact on being smoothed out of spy's (surpassing) high-tension transformer installation.
Summary of the invention
It is an object of the invention to provide the heat preserving method of a kind of roof insulating installed in special (surpassing) high-tension transformer, use
Lasting in the heat insulation effect making roof insulating, meet insulation demand long in special (surpassing) high-tension transformer installation process, protect
What special (surpassing) high-tension transformer of card was installed is smoothed out.
For reaching above-mentioned purpose, the present invention provides the insulation side of a kind of roof insulating installed for special (surpassing) high-tension transformer
Method, adopts the following technical scheme that
The heat preserving method of a kind of roof insulating installed for special (surpassing) high-tension transformer, is provided with electric heating in described roof insulating
Device, it is characterised in that the heat preserving method of described roof insulating includes: obtain unit interval heat dissipation capacity q of described roof insulating1, wherein,
Unit interval heat dissipation capacity q of described roof insulating1Unit interval heat dissipation capacity q including the ceiling support of described roof insulatingdWith described guarantor
Unit interval heat dissipation capacity q of the canopy body support frame of temperature canopyt；Obtain unit interval heat dissipation capacity q on ground in described roof insulating2；According to institute
State unit interval heat dissipation capacity q of roof insulating1With unit interval heat dissipation capacity q on ground in described roof insulating2, determine described roof insulating
Unit interval total heat dissipation capacity qs, wherein, qs=q1+q2；Unit interval total heat dissipation capacity q according to described roof insulatings, regulate electric heating
The power P of device is equal to qs。
The invention provides the heat preserving method of a kind of roof insulating installed as above for special (surpassing) high-tension transformer,
In the insulating process of the roof insulating of the present invention, owing to the power P of electric heater is equal to unit interval total heat dissipation capacity q of roof insulatings,
So that the total amount of heat of this roof insulating is constant, and then the temperature of shed of effective this roof insulating of maintenance is constant, makes the guarantor of roof insulating
Temp effect is lasting, meets insulation demand long in spy's (surpassing) high-tension transformer installation process in winter, it is ensured that special
Being smoothed out of (surpassing) high-tension transformer installation in winter.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below
The accompanying drawing used required in is briefly described, it should be apparent that, the accompanying drawing in describing below is only some of the present invention
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to attached according to these
Figure obtains other accompanying drawing.
Fig. 1 is the flow chart of the heat preserving method of roof insulating in the embodiment of the present invention；
Fig. 2 is unit interval heat dissipation capacity q obtaining roof insulating in the embodiment of the present invention1The flow chart of step；
Fig. 3 is the Coefficient K obtaining roof insulating in the embodiment of the present invention1The flow chart of step；
Fig. 4 is the diameter d of the inflation post obtaining ceiling support in the embodiment of the present invention1The flow chart of step；
Fig. 5 is the diameter d of the inflation post obtaining canopy body support frame in the embodiment of the present invention2The flow chart of step；
Fig. 6 is the thermal conductivity factor λ of the inflation post obtaining ceiling support in the embodiment of the present invention1The flow chart of step；
Fig. 7 is the equivalent radiation thermal conductivity λ in the roof insulating obtaining ceiling support in the embodiment of the present inventionr1Step
Flow chart；
Fig. 8 is the thermal conductivity factor λ of the inflation post obtaining canopy body support frame in the embodiment of the present invention2The flow chart of step；
Fig. 9 is the equivalent radiation thermal conductivity λ in the roof insulating obtaining canopy body support frame in the embodiment of the present inventionr2Step
Flow chart；
Figure 10 is to obtain unit interval heat dissipation capacity q on ground in roof insulating in the embodiment of the present invention2The flow chart of step；
Figure 11 is the three-dimensional structure schematic diagram of the roof insulating in the embodiment of the present invention；
Figure 12 is the top view of the roof insulating in the embodiment of the present invention；
Figure 13 is the front view of the roof insulating in the embodiment of the present invention；
Figure 14 is the side view of the roof insulating in the embodiment of the present invention；
Figure 15 is the structural representation when lifting of the roof insulating in the embodiment of the present invention.
Description of reference numerals:
1-is incubated running-on；21A-the first arc inflation post；
22A-the second arc inflation post；22B-ceiling connects inflation post；
23A-first linearly inflates post；23B-second linearly inflates post；
23C-support and inflation post；23D-end face connects inflation post；
Inflation post in the middle of 24A-；24B-canopy body connects inflation post；
24C-First Transition connects inflation post；24D-the second transition connects inflation post；
3-hoisting ring.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is a part of embodiment of the present invention rather than whole embodiments wholely.Based on this
Embodiment in bright, the every other enforcement that those of ordinary skill in the art are obtained under not making creative work premise
Example, broadly falls into the scope of protection of the invention.
The embodiment of the present invention provides the heat preserving method of the one roof insulating for special (surpassing) high-tension transformer is installed, such as Fig. 1
This heat preserving method shown includes:
Step S1, unit interval heat dissipation capacity q of acquisition roof insulating1, wherein, unit interval heat dissipation capacity q of roof insulating1Including
Unit interval heat dissipation capacity q of the ceiling support of roof insulatingdUnit interval heat dissipation capacity q with the canopy body support frame of roof insulatingt, i.e. q1=
qd+qt。
Unit interval heat dissipation capacity q on ground in step S2, acquisition roof insulating2。
It should be noted that obtain unit interval heat dissipation capacity q of roof insulating1With the unit interval on ground in acquisition roof insulating
Heat dissipation capacity q2Concrete mode all can have multiple, and for obtain roof insulating unit interval heat dissipation capacity q1With acquisition roof insulating
Unit interval heat dissipation capacity q on interior ground2Sequencing, the embodiment of the present invention is not defined, and those skilled in the art are permissible
Selecting according to actual needs, the embodiment of the present invention will be illustrated in subsequent content and will be described.
Step S3, unit interval heat dissipation capacity q according to roof insulating1With unit interval heat dissipation capacity q on ground in roof insulating2, really
Determine unit interval total heat dissipation capacity q of roof insulatings, wherein, qs=q1+q2。
Step S4, unit interval total heat dissipation capacity q according to roof insulatings, the power P of regulation electric heater is equal to qs。
Embodiments provide the guarantor of a kind of roof insulating installed as above for special (surpassing) high-tension transformer
Temperature method, in the insulating process of the roof insulating of the embodiment of the present invention, when being equal to the unit of roof insulating due to the power P of electric heater
Between total heat dissipation capacity qs, so that the total amount of heat of this roof insulating is constant, and then the temperature of shed of effective this roof insulating of maintenance is constant,
The heat insulation effect making roof insulating is lasting, and meeting insulation long in spy's (surpassing) high-tension transformer installation process in winter needs
Ask, it is ensured that being smoothed out of special (surpassing) high-tension transformer installation in winter.
Embodiment of the present invention unit interval heat dissipation capacity q to obtaining roof insulating below1With in roof insulating during the unit on ground
Between heat dissipation capacity q2Concrete mode be described in detail:
Step S1, unit interval heat dissipation capacity q of acquisition roof insulating1Concrete mode have multiple, such as, mode one, pass through
Many experiments obtains the temperature difference of the unit interval of roof insulating, calculates insulation according to the temperature difference of the unit interval of roof insulating
Unit interval heat dissipation capacity q of canopy1；Mode two, as in figure 2 it is shown, obtain unit interval heat dissipation capacity q of roof insulating1Step include:
Obtain the Coefficient K of ceiling supportd；Obtain the Coefficient K of canopy body support framet；Obtain internal surface area A of ceiling supportd；Obtain
Take internal surface area A of canopy body support framet；Obtain canopy inside holding temperature T of roof insulatingn, it is pointed out that " protect in the canopy of roof insulating
Temperature temperature Tn" refer to roof insulating when being incubated, temperature to be reached in canopy；Obtain ambient temperature Tw；According to canopy
The Coefficient K of ceiling holdd, the Coefficient K of canopy body support framet, obtain ceiling support internal surface area Ad, obtain canopy body support frame
Internal surface area At, canopy inside holding temperature TnWith ambient temperature Tw, determine unit interval heat dissipation capacity q of ceiling supportdAnd canopy
Unit interval heat dissipation capacity q of body support framet, wherein qd=Kd×Ad×(Tn-Tw), qt=Kt×At×(Tn-Tw)；According to ceiling support
Unit interval heat dissipation capacity qdUnit interval heat dissipation capacity q with canopy body support framet, determine unit interval heat dissipation capacity q of roof insulating1, its
In, q1=qd+qt.It should be noted that for the Coefficient K obtaining ceiling supportd, obtain canopy body support frame heat transfer coefficient
Kt, obtain ceiling support internal surface area Ad, obtain canopy body support frame internal surface area At, obtain canopy inside holding temperature TnAnd acquisition
Ambient temperature TwSequencing, the embodiment of the present invention is not defined, and those skilled in the art can be according to actual conditions
Select.
Wherein, compared with mode one, two unit interval heat dissipation capacity q calculating roof insulating by the way1Can be effective
Avoid the error in experimentation so that unit interval heat dissipation capacity q of the roof insulating calculated1More accurate, and then further
Ensure that the heat insulation effect of roof insulating.
Exemplarily, as it is shown on figure 3, the Coefficient K of above-mentioned acquisition ceiling supportdWith the heat transfer system obtaining canopy body support frame
Number KtStep include:
Obtain the diameter d of the inflation post of the ceiling support of roof insulating1；Obtain the inflation post of the canopy body support frame of roof insulating
Diameter d2；Obtain the thermal conductivity factor λ of the inflation post of ceiling support1；Obtain the thermal conductivity factor λ of the inflation post of canopy body support frame2；Obtain
Take the thickness δ of the adiabator layer of ceiling support1；Obtain the thickness δ of the adiabator layer of canopy body support frame2；Obtain insulation material
The thermal conductivity factor λ of layer；Obtain the coefficient of heat transfer a of roof insulating inner surfacen；Obtain the coefficient of heat transfer a of roof insulating outer surfacew；According to
The diameter d of the inflation post of ceiling support1, canopy body support frame inflation post diameter d2, ceiling support inflation post thermal conductivity factor
λ1, canopy body support frame inflation post thermal conductivity factor λ2, the thickness δ of adiabator layer of ceiling support1, the insulation of canopy body support frame
The thickness δ of material layer2, the thermal conductivity factor λ of adiabator layer, the coefficient of heat transfer a of roof insulating inner surfacenWith roof insulating outer surface
Coefficient of heat transfer aw, determine the Coefficient K of ceiling supportdWith the Coefficient K obtaining described canopy body support framet, wherein,Similarly, for obtaining the inflation post of ceiling support
Diameter d1, obtain canopy body support frame inflation post diameter d2, obtain ceiling support inflation post thermal conductivity factor λ1, obtain canopy
The thermal conductivity factor λ of the inflation post of body support frame2, obtain the thickness δ of adiabator layer of ceiling support1, obtain canopy body support frame insulation
The thickness δ of material layer2, obtain described adiabator layer thermal conductivity factor λ, obtain roof insulating inner surface coefficient of heat transfer anWith obtain
Take the coefficient of heat transfer a of roof insulating outer surfacewSequencing, the embodiment of the present invention is not defined, those skilled in the art
Can select according to actual conditions.
It should be noted that obtain the diameter d of the inflation post of ceiling support1Mode have multiple, such as, mode one, directly
Connect ceiling support is measured and obtain ceiling support and inflate the diameter d of post1；Mode two, as shown in Figure 4, obtains ceiling and props up
The diameter d of the inflation post of frame1Step include: obtain the height h of ceiling support of roof insulating1；Obtain the span L of roof insulating；Root
Height h according to ceiling support1With the span L of roof insulating, determine the diameter d of the inflation post of ceiling support1, wherein, d1=k1×(h1
× L), k1Span be 0.006m-1～0.020m-1.Similarly, for obtaining the height h of ceiling support1With roof insulating
The sequencing of span L, the embodiment of the present invention is not defined, and those skilled in the art can select according to actual conditions
Select.
Wherein, compared with mode one, by the way two calculate ceiling support inflation post diameter d1Can avoid
The error occurred during measurement so that the diameter d of the inflation post of the ceiling support calculated1More accurate, and then further
Ensure that the heat insulation effect of roof insulating.
Similarly, the diameter d of the inflation post of canopy body support frame is obtained2Mode have multiple, such as, mode one, directly to canopy
Body support frame measures the diameter d of the inflation post obtaining canopy body support frame2；Mode two, as it is shown in figure 5, obtain filling of canopy body support frame
The diameter d of gas column2Step include: obtain canopy body support frame height h2；Obtain the span L of roof insulating；Height according to canopy body support frame
Degree h2With the span L of roof insulating, determine the diameter d of the inflation post of canopy body support frame2, wherein, d2=k2×(h2× L), k2Value
Scope is 0.006m-1～0.020m-1.It should be noted that obtain the height h of canopy body support frame2Priority with the span L of roof insulating
Sequentially, the embodiment of the present invention is not defined, and those skilled in the art can select according to actual conditions.
Wherein, compared with mode one, by the way two calculate canopy body support frame inflation post diameter d2Can avoid
The error occurred during measurement so that the diameter d of the inflation post of the canopy body support frame calculated2More accurate, and then further
Ensure that the heat insulation effect of roof insulating.
Exemplarily, as shown in Figure 6, the thermal conductivity factor λ of the inflation post of ceiling support is obtained1Step include: obtain sky
The thermal conductivity factor λ of gasa；Obtain the convection current equivalent heat conductivity λ in ceiling supportc1；The rad equivalent obtained in ceiling support is led
Hot coefficient lambdar1；Thermal conductivity factor λ according to aira, convection current equivalent heat conductivity λ in ceiling supportc1With the spoke in ceiling support
Penetrate equivalent heat conductivity λr1, determine the thermal conductivity factor λ of the inflation post of ceiling support1, wherein, λ1=λa+λc1+λr1.Similarly, right
In the thermal conductivity factor λ obtaining aira, the convection current equivalent heat conductivity λ obtained in ceiling supportc1With the spoke obtained in ceiling support
Penetrate equivalent heat conductivity λr1Sequencing, the embodiment of the present invention is not defined, and those skilled in the art can be according to actual feelings
Condition selects.
Exemplarily, the convection current equivalent heat conductivity λ in ceiling support is obtainedc1Step include:
The diameter d of the inflation post according to ceiling support1, canopy inside holding temperature TnWith ambient temperature Tw, determine that ceiling props up
Convection current equivalent heat conductivity λ in framec1, wherein, λc1=0.942d1 3/2(Tn-Tw)1/2。
Exemplarily, as it is shown in fig. 7, the equivalent radiation thermal conductivity λ obtained in ceiling supportr1Step include: obtain
The emissivity ε of the internal layer tarpaulin of roof insulating1；Obtain the emissivity ε of the outer layer tarpaulin of roof insulating2；Obtain blackbody coefficient Cb；
Emissivity ε according to internal layer tarpaulin1, the emissivity ε of outer layer tarpaulin2, blackbody coefficient Cb, ceiling support inflation post straight
Footpath d1, canopy inside holding temperature TnWith ambient temperature Tw, determine the equivalent radiation thermal conductivity λ in ceiling support1, wherein,Similarly, for obtaining roof insulating
The emissivity ε of interior tarpaulin internal layer tarpaulin1, obtain the emissivity ε of outer tarpaulin outer layer tarpaulin of roof insulating2With acquisition black body radiation system
Number CbSequencing, the embodiment of the present invention is not defined, and those skilled in the art can select according to actual conditions.
Exemplarily, as shown in Figure 8, the thermal conductivity factor λ of the inflation post of canopy body support frame is obtained2Step include: obtain sky
The thermal conductivity factor λ of gasa；Obtain the convection current equivalent heat conductivity λ in the canopy body support frame of roof insulatingc2；Obtain the spoke in canopy body support frame
Penetrate equivalent heat conductivity λr2；Thermal conductivity factor λ according to aira, convection current equivalent heat conductivity λ in canopy body support framec2Prop up with canopy body
Equivalent radiation thermal conductivity λ in framer2, determine the thermal conductivity factor λ of the inflation post of canopy body support frame2, wherein, λ2=λa+λc2+λr2。
Similarly, for obtaining the thermal conductivity factor λ of aira, the convection current equivalent heat conductivity λ obtained in canopy body support framec2With acquisition canopy body
Equivalent radiation thermal conductivity λ in supportr2Sequencing, the embodiment of the present invention is not defined, and those skilled in the art can
Select according to actual conditions.
Exemplarily, the convection current equivalent heat conductivity λ in canopy body support frame is obtainedc2Step include: according to canopy body support frame
The diameter d of inflation post2, canopy inside holding temperature TnWith ambient temperature Tw, determine the convection current equivalent heat conductivity in canopy body support frame
λc2, wherein, λc2=0.942d2 3/2(Tn-Tw)1/2。
Exemplarily, as it is shown in figure 9, the equivalent radiation thermal conductivity λ obtained in canopy body support framer2Step include: obtain
The emissivity ε of the internal layer tarpaulin of roof insulating1；Obtain the emissivity ε of the outer layer tarpaulin of roof insulating2；Obtain blackbody coefficient Cb；
Emissivity ε according to internal layer tarpaulin1, the emissivity ε of outer layer tarpaulin2, blackbody coefficient Cb, canopy body support frame inflation post straight
Footpath d2, canopy inside holding temperature TnWith ambient temperature Tw, determine the equivalent radiation thermal conductivity in the roof insulating of canopy body support frame
λr2, wherein,Similarly, for obtaining
Take the emissivity ε of the internal layer tarpaulin of roof insulating1, obtain the emissivity ε of outer layer tarpaulin of roof insulating2With acquisition blackbody coefficient
CbSequencing, the embodiment of the present invention is not defined, and those skilled in the art can select according to actual conditions.
It addition, for the cost reducing roof insulating, the material that the internal layer tarpaulin of roof insulating is the most identical with outer layer tarpaulin, this
Time, the emissivity ε of the internal layer tarpaulin of roof insulating in above-mentioned formula1Emissivity ε with the outer layer tarpaulin of roof insulating2Equal.
Additionally, due in the installation process of special (surpassing) high-tension transformer, in spy's (surpassing) high-tension transformer used
Insulating oil is combustibles, so that the safety coefficient in installation process is relatively low, therefore, in the embodiment of the present invention preferably, and internal layer
The material of tarpaulin and outer layer tarpaulin is the fire-retardant tarpaulin of PVC, so that internal layer tarpaulin and outer layer tarpaulin are playing the work of insulation
While with, moreover it is possible to improve the safety coefficient in special (surpassing) high-tension transformer installation process.Now, it is incubated in above-mentioned formula
The emissivity ε of the internal layer tarpaulin of canopy1Emissivity ε with the outer layer tarpaulin of roof insulating2It is 0.9.
Similarly, step S2, unit interval heat dissipation capacity q on ground in acquisition roof insulating2Concrete mode have multiple, example
Such as, mode one, obtain the temperature difference of the unit interval on ground in roof insulating by many experiments, according to the list on ground in roof insulating
The temperature difference of bit time calculates unit interval heat dissipation capacity q on ground in roof insulating2；Mode two, as shown in Figure 10, obtains and protects
Unit interval heat dissipation capacity q on ground in temperature canopy2Step include: obtain the Coefficient K on ground in roof insulating2；Obtain roof insulating
The area A on interior ground2；Obtain canopy inside holding temperature T of roof insulatingn；Obtain ambient temperature Tw；According to ground in roof insulating
Coefficient K2, the area A on ground in roof insulating2, canopy inside holding temperature TnWith ambient temperature Tw, in determining roof insulating
Unit interval heat dissipation capacity q on ground2, wherein, q2=K2×A2×(Tn-Tw).Similarly, for the biography on ground in acquisition roof insulating
Hot COEFFICIENT K2, obtain the area A on ground in roof insulating2, obtain roof insulating canopy inside holding temperature TnWith acquisition ambient temperature
TwSequencing, the embodiment of the present invention is not defined, and those skilled in the art can select according to actual conditions.
Compared with mode one, two calculate unit interval heat dissipation capacity q on ground in roof insulating by the way2Can be effective
Avoid the error in experimentation so that unit interval heat dissipation capacity q on ground in the roof insulating calculated2More accurate, enter one
Step ensure that the heat insulation effect of roof insulating.
For the ease of skilled artisan understands that and implementing, below the embodiment of the present invention provide a kind of with above-mentioned insulation side
The roof insulating that method matches:
Embodiments providing a kind of roof insulating installed for special (surpassing) high-tension transformer, this roof insulating includes propping up
Frame and tarpaulin, support is for forming the main body frame of roof insulating, and support can be inflated；Tarpaulin is for covering propping up of putting up
On frame.Wherein, support include ceiling support and canopy body support frame, ceiling support and canopy body support frame built by many inflation posts and
Become.Form the inflation post of canopy body support frame and form the inflation Zhu Bu UNICOM of canopy body support frame, and the inflation post forming canopy body support frame exists
Can roll or fold when not inflating.
As shown in figure 15, build above-mentioned when the roof insulating that special (surpassing) high-tension transformer is installed, prop up owing to forming ceiling
The inflation post of frame and form the inflation Zhu Bu UNICOM of canopy body support frame, will be able to be formed first to forming the inflation post inflation of ceiling support
The inflation post of the unaerated of canopy body support frame is rolled or is folded.Afterwards completely charged ceiling support is covered on spy's (surpassing) to be installed high
On pressure transformer, the most again canopy body support frame is inflated, finally tarpaulin is covered on support, complete building of roof insulating.It is visible,
Owing to only ceiling support being inflated, canopy body support frame is not inflated, when the support of roof insulating is moved, the volume moved
It is only the volume of ceiling support, therefore greatly reduces the support of the roof insulating volume in moving process, facilitate insulation
The movement of the support of canopy.It addition, above-mentioned roof insulating is built, only need to ventilate in support, then tarpaulin is covered on support
?；Also only tarpaulin need to be packed up during dismounting, then the gas in support is extracted out, the support of roof insulating will not be caused damage
Evil, therefore roof insulating can be reused.Furthermore, include taking of stake body relative to the installation of the roof insulating mentioned in background technology
Building the scheme of installation with boiler, building of the roof insulating in the present invention only includes the installation of support and building of tarpaulin, does not has
The installation of other heaters, therefore the installation process of the roof insulating in the present invention is relatively simple.
As shown in figure 11, ceiling support and the tarpaulin covered on ceiling support form the ceiling of roof insulating, canopy body support frame
With the canopy body that the tarpaulin covered on canopy body support frame forms roof insulating, ceiling is preferably arch.Being preferably shaped to of canopy body is rectangular
Body or square.Heat-insulated cavity in roof insulating includes upper strata cavity and lower floor's cavity, upper chamber body be positioned at the top of ceiling with
Between the bottom surface of ceiling；Lower floor's cavity is between the bottom surface of the bottom surface of ceiling and canopy body.
Volume in view of special (surpassing) high-tension transformer is the biggest, and the volume of corresponding roof insulating is the biggest, at this moment just needs
The intensity of roof insulating to be increased ensures the security of the installation process of spy's (surpassing) high-tension transformer.In order to meet spy's (surpassing) high pressure
The transformer requirement to roof insulating intensity, by increasing the diameter of the inflation post forming ceiling support and can form canopy body support frame
The diameter of inflation post ensures the intensity of roof insulating.
Preferably, the diameter of the inflation post forming ceiling support meets formula: d1=k1×(h1×L)；Wherein, d1For shape
Become the diameter of the inflation post of ceiling support；k1For constant, k1Span be 0.006m-1～0.020m-1；h1High for special (surpassing)
The height of the part being in pressure transformer in upper chamber body；L is the span of ceiling.
The diameter of the inflation post forming canopy body support frame meets formula: d2=k2×(h2×L)；Wherein, d2Prop up for forming canopy body
The diameter of the inflation post of frame；k2For constant, k2Span be 0.006m-1～0.020m-1；h2For special (surpassing) high-tension transformer
In the height of part that is in lower floor's cavity；L is the span of ceiling.
By the diameter d of the inflation post forming ceiling support that above-described embodiment is given1With the inflation forming canopy body support frame
The diameter d of post2The required formula met it can be seen that in the case of the span L of ceiling is certain, special (surpassing) high-tension transformer
In the height h of part that is in upper chamber body1Increase, the diameter d of the corresponding inflation post forming ceiling support1To increase therewith
Greatly, to meet the requirement of the intensity of the ceiling to roof insulating；In like manner, special (surpassing) high-tension transformer is in the portion in lower floor's cavity
The height h divided2Increase, form the diameter d of the inflation post of canopy body support frame2Also to increase therewith, to meet the canopy body to roof insulating
The requirement of intensity.
And roof insulating spy to be met (surpassing) high-tension transformer in above-described embodiment is wanted in the security of installation process
Ask, and be also satisfied the requirement of external environment (environment such as wind, sleet).Therefore, when extraneous wind-force is relatively big or sleet is stronger,
The diameter inflating post of ceiling support and/or the diameter of the inflation post of formation canopy body support frame can be formed, so that being incubated by increase
The intensity of canopy is improved；Or, when the wind-force in external environment is less or sleet is more weak, form ceiling support by reducing
The diameter of inflation post and/or the diameter of the inflation post of formation canopy body support frame, to ensure that roof insulating has required intensity
Under premise, reduce the volume of roof insulating as far as possible.
As shown in Figure 11 to 14, before ceiling support includes ceiling front-end bracket, ceiling rear end support and is positioned at ceiling
Ceiling intermediate support between end support and ceiling rear end support.
In the embodiment of the present invention, ceiling front-end bracket and ceiling rear end support are the first arc inflation post 21A；In ceiling
Between support include many spaced second arcs inflation post 22A, adjacent second arc inflation post 22A connected by ceiling
Inflation post 22B connects.
And canopy body support frame includes canopy body front-end bracket, canopy body rear end support and is positioned at canopy body front-end bracket and canopy body rear end
Canopy body intermediate support between support.
Wherein, canopy body front-end bracket and canopy body rear end support all include first linearly inflation post 23A, second linearly inflate post
23B and be located at the first linear support and inflation post 23C between inflation post 23A and second linearly inflation post 23B.Preferably,
One linearly inflation one end of post 23A, second linearly one end 23B and support and inflation post 23C of inflation post 23B one end all and ceiling
First arc inflation post 22A of front-end bracket connects, first linearly between inflation post 23A and support and inflation post 23C, support and inflation
All connect inflation post 23D by end face between post 23C and second linearly inflation post 22A to be connected.Canopy body intermediate support includes first
Inflation wall and the second inflation wall, the first inflation wall and the second inflation wall all include many spaced middle inflation post 24A, phase
In the middle of adjacent two, inflation post 24A is connected by canopy body connection inflation post 24B, linearly inflates post near first in the first inflation wall
In the middle of of 23A, inflation post 24A is connected by First Transition connection inflation post 24C and first linearly inflation post 23A, and second fills
Gas wall is inflated in the middle of of the second linear inflation post 23B post 24A by the second transition connection inflation post 24D and second
Linear inflation post 23B is connected.
And one end of the second arc inflation post 22A of ceiling support support connects the middle inflation post in the first inflation wall
Inflation post 24A in the middle of in 24A, and other end connection the second inflation wall of the second arc inflation post 22A.
Scheme for above-mentioned ceiling support, it is preferred that can make in the middle of the ceiling front-end bracket of composition ceiling support, ceiling
The crossover location of support and ceiling rear end support communicates, thus disposably inflation just can complete the inflation work of ceiling support.
In like manner, for the scheme of above-mentioned canopy body support frame, it is preferred that the canopy body front-end bracket of composition canopy body support frame, canopy can be made
The crossover location of body intermediate support and canopy body rear end support communicates, thus disposably inflation just can complete the inflation of canopy body support frame
Work.
As shown in figure 15, can multiple hoisting ring 3 be set in the outside of the position that ceiling support connects with canopy body support frame, many
Individual hoisting ring 3 is uniformly distributed along the circumference of roof insulating, thus in the installation process of roof insulating, available hanging apparatus lifts this
A little completely charged ceiling supports of hoisting ring 3 cover on spy's (surpassing) high-tension transformer to be installed.
Additionally, the another one effect of hoisting ring 3 is, after roof insulating is put up, steel wire penetrating can be used to lift
Ring 3, is then bundled in the end of steel wire rope on the earth anchor being fixed on ground, it is achieved roof insulating on the ground fixing.
In order to strengthen the heat-insulating property of roof insulating, the tarpaulin of roof insulating includes internal layer tarpaulin and outer layer tarpaulin, internal layer tarpaulin
Being arranged on the inner side of support, outer layer tarpaulin is arranged on the outside of support.The set-up mode of so double-deck tarpaulin can be protected effectively
The heat insulation effect of card roof insulating.In order to increase the heat insulation effect of roof insulating further, can tarpaulin inside support towards insulation
On surface within canopy, adiabator layer is set.
The insulating oil used in installation process due to special (surpassing) high-tension transformer is combustibles, high in order to improve spy's (surpassing)
Pressure transformer safety coefficient in installation process, tarpaulin preferably polyvinyl fluoride Jia Sibu etc. used in this enforcement has resistance
The tarpaulin of combustion character, thus improve the security of spy's (surpassing) high-tension transformer installation process.
As shown in Figure 11 to 14, for convenience in roof insulating in sleeve pipe with the external world be connected, can be at the canopy of roof insulating
Arranging insulation running-on 1 on ceiling hold, accordingly, the part that tarpaulin covers at ceiling support offers breach, this breach and muff
Mouth 1 matches.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art, in the technical scope that the invention discloses, can readily occur in change or replace, should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.
Claims (14)
1. a heat preserving method for the roof insulating installed for special (surpassing) high-tension transformer, is provided with electric heating in described roof insulating
Device, it is characterised in that the heat preserving method of described roof insulating includes:
Obtain unit interval heat dissipation capacity q of described roof insulating1, wherein, unit interval heat dissipation capacity q of described roof insulating1Including described
Unit interval heat dissipation capacity q of the ceiling support of roof insulatingdUnit interval heat dissipation capacity q with the canopy body support frame of described roof insulatingt；
Obtain unit interval heat dissipation capacity q on ground in described roof insulating2；
Unit interval heat dissipation capacity q according to described roof insulating1With unit interval heat dissipation capacity q on ground in described roof insulating2, determine
Unit interval total heat dissipation capacity q of described roof insulatings, wherein, qs=q1+q2；
Unit interval total heat dissipation capacity q according to described roof insulatings, the power P of regulation electric heater is equal to qs。
Heat preserving method the most according to claim 1, it is characterised in that obtain unit interval heat dissipation capacity q of described roof insulating1
Step include:
Obtain the Coefficient K of described ceiling supportd；Obtain the Coefficient K of described canopy body support framet；Obtain described ceiling support
Internal surface area Ad；Obtain internal surface area A of described canopy body support framet；Obtain canopy inside holding temperature T of described roof insulatingn；Obtain
Ambient temperature Tw；Coefficient K according to described ceiling supportd, the Coefficient K of described canopy body support framet, described ceiling
Internal surface area A of supportd, internal surface area A of described canopy body support framet, described canopy inside holding temperature TnWith described ambient temperature
Tw, determine unit interval heat dissipation capacity q of described ceiling supportdUnit interval heat dissipation capacity q with described canopy body support framet, wherein qd=
Kd×Ad×(Tn-Tw), qt=Kt×At×(Tn-Tw)；Unit interval heat dissipation capacity q according to described ceiling supportdWith described canopy body
Unit interval heat dissipation capacity q of supportt, determine unit interval heat dissipation capacity q of described roof insulating1, wherein, q1=qd+qt。
Heat preserving method the most according to claim 2, it is characterised in that obtain the Coefficient K of described ceiling supportdWith obtain
Take the Coefficient K of described canopy body support frametStep include:
Obtain the diameter d of the inflation post of the ceiling support of described roof insulating1；Obtain the inflation post of the canopy body support frame of described roof insulating
Diameter d2；Obtain the thermal conductivity factor λ of the inflation post of described ceiling support1；Obtain the heat conduction system of the inflation post of described canopy body support frame
Number λ2；Obtain the thickness δ of the adiabator layer of described ceiling support1；Obtain the thickness of the adiabator layer of described canopy body support frame
δ2；Obtain the thermal conductivity factor λ of described adiabator layer；Obtain the coefficient of heat transfer a of described roof insulating inner surfacen；Obtain described insulation
The coefficient of heat transfer a of canopy outer surfacew；
The diameter d of the inflation post according to described ceiling support1, described canopy body support frame inflation post diameter d2, described ceiling support
Inflation post thermal conductivity factor λ1, described canopy body support frame inflation post thermal conductivity factor λ2, the adiabator layer of described ceiling support
Thickness δ1, the thickness δ of adiabator layer of described canopy body support frame2, the thermal conductivity factor λ of described adiabator layer, described roof insulating
The coefficient of heat transfer a of inner surfacenCoefficient of heat transfer a with described roof insulating outer surfacew, determine the Coefficient K of described ceiling supportd
With the Coefficient K obtaining described canopy body support framet, wherein,
Heat preserving method the most according to claim 3, it is characterised in that obtain the diameter d of the inflation post of described ceiling support1
Step include:
Obtain the height h of described ceiling support1；Obtain the span L of described roof insulating；
Height h according to described ceiling support1With the span L of described roof insulating, determine the diameter of the inflation post of described ceiling support
d1, wherein, d1=k1×(h1× L), k1Span be 0.006m-1～0.020m-1。
Heat preserving method the most according to claim 3, it is characterised in that obtain the diameter d of the inflation post of described canopy body support frame2
Step include:
Obtain the height h of described canopy body support frame2；Obtain the span L of described roof insulating；
Height h according to described canopy body support frame2With the span L of described roof insulating, determine the diameter of the inflation post of described canopy body support frame
d2, wherein, d2=k2×(h2× L), k2Span be 0.006m-1～0.020m-1。
Heat preserving method the most according to claim 3, it is characterised in that obtain the heat conduction system of the inflation post of described ceiling support
Number λ1Step include:
Obtain the thermal conductivity factor λ of aira；Obtain the convection current equivalent heat conductivity λ in described ceiling supportc1；Obtain described ceiling
Equivalent radiation thermal conductivity λ in supportr1；
Thermal conductivity factor λ according to described aira, convection current equivalent heat conductivity λ in described ceiling supportc1With described ceiling support
Interior equivalent radiation thermal conductivity λr1, determine the thermal conductivity factor λ of the inflation post of described ceiling support1, wherein, λ1=λa+λc1+
λr1。
Heat preserving method the most according to claim 6, it is characterised in that obtain the convection current equivalent heat conduction in described ceiling support
Coefficient lambdac1Step include:
The diameter d of the inflation post according to described ceiling support1, described canopy inside holding temperature TnWith described ambient temperature Tw, really
Convection current equivalent heat conductivity λ in fixed described ceiling supportc1, wherein, λc1=0.942d1 3/2(Tn-Tw)1/2。
Heat preserving method the most according to claim 6, it is characterised in that obtain the rad equivalent heat conduction in described ceiling support
Coefficient lambdar1Step include:
Obtain the emissivity ε of the internal layer tarpaulin of described roof insulating1；Obtain the emissivity ε of the outer layer tarpaulin of described roof insulating2；Obtain
Blackbody coefficient Cb；
Emissivity ε according to described internal layer tarpaulin1, the emissivity ε of described outer layer tarpaulin2, described blackbody coefficient Cb, described
The diameter d of the inflation post of ceiling support1, described canopy inside holding temperature TnWith described ambient temperature Tw, determine that described ceiling props up
Equivalent radiation thermal conductivity λ in framer1, wherein,
Heat preserving method the most according to claim 3, it is characterised in that obtain the heat conduction system of the inflation post of described canopy body support frame
Number λ2Step include:
Obtain the thermal conductivity factor λ of aira；Obtain the convection current equivalent heat conductivity λ in described canopy body support framec2；Obtain described canopy body
Equivalent radiation thermal conductivity λ in supportr2；
Thermal conductivity factor λ according to described aira, convection current equivalent heat conductivity λ in described canopy body support framec2With described canopy body support frame
Interior equivalent radiation thermal conductivity λr2, determine the thermal conductivity factor λ of the inflation post of described canopy body support frame2, wherein, λ2=λa+λc2+
λr2。
Heat preserving method the most according to claim 9, it is characterised in that the convection current equivalent obtained in described canopy body support frame is led
Hot coefficient lambdac2Step include:
The diameter d of the inflation post according to described canopy body support frame2, described canopy inside holding temperature TnWith described ambient temperature Tw, really
Convection current equivalent heat conductivity λ in fixed described canopy body support framec2, wherein, λc2=0.942d2 3/2(Tn-Tw)1/2。
11. heat preserving methods according to claim 9, it is characterised in that the rad equivalent obtained in described canopy body support frame is led
Hot coefficient lambdar2Step include:
Obtain the emissivity ε of the internal layer tarpaulin of described roof insulating1；Obtain the emissivity ε of the outer layer tarpaulin of described roof insulating2；Obtain
Blackbody coefficient Cb；
Emissivity ε according to described internal layer tarpaulin1, the emissivity ε of described outer layer tarpaulin2, described blackbody coefficient Cb, described
The diameter d of the inflation post of canopy body support frame2, described canopy inside holding temperature TnWith described ambient temperature Tw, determine that described canopy body props up
Equivalent radiation thermal conductivity λ in framer2, wherein,
12. heat preserving methods according to claim 8 or claim 9, it is characterised in that the emissivity ε of described internal layer tarpaulin1With described
The emissivity ε of outer layer tarpaulin2Equal.
13. heat preserving methods according to claim 12, it is characterised in that the emissivity ε of described internal layer tarpaulin1Outside described
The emissivity ε of layer tarpaulin2It is 0.9.
14. heat preserving methods according to claim 1, it is characterised in that obtain the unit interval on ground in described roof insulating
Heat dissipation capacity q2Step include:
Obtain the Coefficient K on ground in described roof insulating2；Obtain the area A on ground in described roof insulating2；Obtain described insulation
Canopy inside holding temperature T of canopyn；Obtain ambient temperature Tw；
According to the Coefficient K on ground in described roof insulating2, the area A on ground in described roof insulating2, described canopy inside holding temperature
TnWith described ambient temperature Tw, determine unit interval heat dissipation capacity q on ground in described roof insulating2, wherein, q2=K2×A2×
(Tn-Tw)。
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| CN201610232759.1A CN105910168B (en) | 2016-04-14 | 2016-04-14 | The heat preserving method of roof insulating for special (super) high-tension transformer installation |
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