CN104577914A - Fire-resistant bus duct and method of constructing same - Google Patents
Fire-resistant bus duct and method of constructing same Download PDFInfo
- Publication number
- CN104577914A CN104577914A CN201310685285.2A CN201310685285A CN104577914A CN 104577914 A CN104577914 A CN 104577914A CN 201310685285 A CN201310685285 A CN 201310685285A CN 104577914 A CN104577914 A CN 104577914A
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- Prior art keywords
- heat insulation
- insulation material
- supporting member
- outer box
- fire resistant
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- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000012546 transfer Methods 0.000 claims abstract description 33
- 239000012774 insulation material Substances 0.000 claims description 110
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 44
- 238000010276 construction Methods 0.000 claims description 24
- 238000009413 insulation Methods 0.000 claims description 24
- NOQGZXFMHARMLW-UHFFFAOYSA-N Daminozide Chemical group CN(C)NC(=O)CCC(O)=O NOQGZXFMHARMLW-UHFFFAOYSA-N 0.000 claims description 23
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 15
- 239000000919 ceramic Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000000835 fiber Substances 0.000 description 8
- 239000004020 conductor Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000005728 strengthening Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010445 mica Substances 0.000 description 3
- 229910052618 mica group Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 150000007516 brønsted-lowry acids Chemical class 0.000 description 1
- 150000007528 brønsted-lowry bases Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003176 fibrotic effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/10—Cooling
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/005—Set screws; Locking means therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0406—Details thereof
- H02G3/0412—Heat or fire protective means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Thermal Insulation (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
The invention discloses a fire-resistant bus duct and a method of constructing the same. By improving fire-resistant performance of the bus duct, the fire-resistant standard can be met and the short circuit phenomenon that arises from heat collection of a connecting part of the bus duct due to convective heat transfer is avoided. Additionally, retraction-induced distortion due to thermal deformation of the bus duct is avoided. Furthermore, stability and reliability can be ensured by fulfilling the normal function for enough long time in case of fire disasters.
Description
Technical field
The present invention relates to fire resistant busbar and construction method thereof, more specifically, relate to by improving fire resistance, with the refractory standard after satisfied strengthening, and the temperature rising blocked because heat trnasfer causes, and function of bringing into normal play in time enough during breaking out of fire, thus fire resistant busbar and the construction method thereof of stability and reliability can be guaranteed.
Background technology
Usually, as the medium transmitting electric energy, used cable (cable) more in the past, and recently, use bus duct (bus duct) as the substitute of cable more.Bus duct possesses the bus (bus bar) played as the conductor core wire effect in cable, therefore, it is possible to the jumbo electric current of conducting.
In the past, the wire laying mode of power wiring mode many applications exploitings cable, but the wire laying mode adding that in the wire laying mode such as high-rise or integrated mill employing possesses the bus duct (bus duct) of bus (bus bar) gradually.
This bus duct and cable possess conductor and insulator in there is common ground; but; both are in difference; cable is in order to protect conductor or insulate; use plastics or rubber, and bus duct is by the jumbo electric current of conductor propagation, is therefore difficult to directly utilize insulator to protect; therefore wrap up bus with insulator, and bus is built in metallic channel.
This bus duct not only easily realizes setting up and moving and establish, and can easily process when the power wiring generation exception of bus duct or accident, and can recover rapidly, is widely used in the place using larger electric power thus.
And compared with the past, building electric power supply system of today, more and more tending to maximize, and needs jumbo energy, therefore, according to this trend, safety and the use amount of the little bus duct of energy loss increase rapidly.
Such as, bus duct is applied in the facility in factory, mansion, apartment, hypermarket, Business Building, research and development industry park, department store, golf course, tunnel, semiconductor and LCD factory, chemistry, oil refining, steel-making, super high rise building, Ultra-high Voltage Substations, liquefied natural gas receiving station, novel airport, Deng Ge field, harbour.
Due to be disposed in bus duct inside bus in usually to circulate high-tension current, therefore to be arranged in the bus duct of given size with the state of external isolation, and after the bus duct comprising this bus manufactures the unit (unit) with certain length, carry out connection construction according to the facility that will arrange and distribution design.
On the other hand, recently for the manufacture of bus duct or the major subjects of construction be improve limiting temperature state under, particularly breaking out of fire time the effect of bus duct and performance.In order to safety, must improve to greatest extent can delay the intensity of a fire spread and can be fire-resistant the fire resistance of performance, i.e. bus duct.
The fire resistance (fire-resistance) of bus duct is higher, more can extend energising ability when fire, and by postponing the time of fire spreading, can strive for evacuating people or arranging the suitable time needed for fire extinguishing means.
Nowadays the requirement standard of fire-resistance property is improved gradually, particularly, be used in the factory building at land and sea, the bus duct product needed of high-rise infrastructure possesses higher fire-resistance property.When the breaking out of fire such as factory building, high-rise, escaping from or withdrawing in order to personnel, needs to make the fire-fighting/disaster prevention systems such as the fire-fighting power supply of nucleus equipment, fire alarm, fire extinguisher operate and the fire resistant busbar kept in the MIN time.
About this fire resistant busbar, have employed in the past and undertaken every heat treated structure by the external box of interlayer or the bus of inside, i.e. conductor merely, but, when being exposed to flame for a long time, outer box or inner conductor easily melt, particularly comprising the connecting portion that heat resisting temperature is relatively low, therefore when carrying out fire test, being difficult to meet target fire resistance.
In addition, in order to improve fire resistance, when adopt mixing (mixing) structure of heat insulation material of casting (cast molding) mode time, can fire resistance be improved to a certain extent, but cause production complex process, and need to use independent mould to make at the scene.
In addition, along with the importance of fire resistance is given prominence to gradually, specification for fire-resistant condition is also day by day strict, in order to similar with actual construction conditions, require that experimental technique comprises connecting portion when arranging as standard (KS C IEC60331-11), namely need to prove under the state that integral experiment sample is placed in (but not localized heating) in combustion chamber (firechamber), adhere to the fire resistance of 60 minutes (the fire-resistant specification of JIS8364) with the temperature of more than 900 degree.
Therefore be badly in need of a kind of fire resistant busbar, it meets the refractory standard after strengthening by improving fire resistance, and blocks the temperature that heat trnasfer causes and rise, and plays normal function enough for a long time when breaking out of fire, thus can ensure stability and reliability.
Summary of the invention
Embodiments of the invention are intended to by improving the fire resistance of bus duct with the refractory standard after satisfied strengthening.
Further, the present invention is intended to the short circuit phenomenon that prevents because convective heat transfer causes heat accumulation to occur at bus duct connecting portion.
And the present invention is intended to prevent bus duct from the flexible thus phenomenon of distortion occurring because of thermal deformation.
In addition, the present invention is intended to when a fire, plays normal function enough for a long time, thus guarantees stability and reliability.
One aspect of the present invention, provide a kind of fire resistant busbar, it comprises: the first outer box, and its inside is provided with bus, and in order to strengthen intensity, possesses the alar part extended to side at upper surface and lower surface; First heat insulation material, is filled between described upper surface and the alar part of lower surface, is the convective heat transfer of medium for blocking with air.
Fire resistant busbar of the present invention may further include: supporting member, and pedestal is arranged every predetermined distance, for supporting described first outer box on specified altitude; Fixing band, for being fixed on described supporting member by described first outer box.
Fire resistant busbar of the present invention can comprise the second heat insulation material further, its to be configured between described supporting member and described first outer box or between described supporting member and described pedestal at least one place, to block the conduction heat transfer via described supporting member.
Described second heat insulation material can wrap up the main body of described supporting member further.
In described pedestal upper surface entirety, heat insulation material can be set to carry out heat insulation process.
Fire resistant busbar of the present invention may further include: the second outer box, and it is configured in the upside of described pedestal in the mode in the outside surrounding described first outer box; 3rd heat insulation material, is filled in the space between described first outer box, described second outer box and described pedestal, to block convective heat transfer.
Fire resistant busbar of the present invention may further include the 4th heat insulation material, and described 4th heat insulation material wraps up outside the connecting portion for connecting adjacent bus duct.
The combined hole for bolt combination being formed in described supporting member can be formed as shape of slit.
According to a further aspect in the invention, provide a kind of construction method of fire resistant busbar, can comprise the following steps: according to the step of the heat insulation material of size cutting that will arrange; Being the convective heat transfer of medium to block with air, filling the step of described heat insulation material at the alar part of the first outer box; Pedestal arranges supporting member every predetermined distance, and after described first outer box is placed in the upside of described supporting member, in conjunction with fixing band to be fixedly installed the step of described first outer box; And described in the arranged outside of described first outer box the step of the second outer box.
Fire resistant busbar construction method of the present invention can comprise further, and the region be suitable for beyond described supporting member and described fixing band position in described first outer box arranges the step of heat insulation material.
Fire resistant busbar construction method of the present invention can comprise further, in order to block the conduction heat transfer by described supporting member, carries out every heat treated step described supporting member.
The heat insulation process of described supporting member is, can between described first outer box or between described supporting member and described pedestal at least one place heat insulation material is set.
Described heat insulation material can wrap up the main body of described supporting member further.
Make the heat insulation material be configured between described supporting member and described pedestal extend to the whole upper surface of described pedestal, or heat insulation material is set further at the whole upper surface of described pedestal, thus carry out heat insulation process.
The construction method of fire resistant busbar of the present invention can comprise further, by the step in the outside of the described fixing band of heat insulation material parcel.
The construction method of fire resistant busbar of the present invention can comprise further, wraps up the step in the whole outside of described first outer box with heat insulation material further.
The construction method of fire resistant busbar of the present invention can comprise further, in the step of the upside of described first outer box assembling the second outer box.
The construction method of fire resistant busbar of the present invention can comprise further, after adjacent bus duct is connected to connecting portion, inserts the step of heat insulation material outside described connecting portion.
In order to carry out the connection operation of connecting portion, the vacant portion not inserting described heat insulation material can be set.
Embodiments of the invention, by improving the fire resistance of bus duct, can meet the refractory standard after strengthening.
And, the short circuit phenomenon occurred because convective heat transfer causes bus duct connecting portion to assemble heat can be prevented.
Further, the phenomenon that bus duct is distorted because thermal deformation causes stretching can be prevented.
In addition, when breaking out of fire, by playing normal function enough for a long time, thus stability and reliability can be guaranteed.
Accompanying drawing explanation
Fig. 1 and Fig. 2 carries out the exploded perspective view before heat insulation unit construction and sectional view to the fire resistant busbar of one embodiment of the invention.
Fig. 3 and Fig. 4 carries out the exploded perspective view after heat insulation unit construction and sectional view to the fire resistant busbar of one embodiment of the invention.
Fig. 5 is the stereogram of an embodiment of the heat insulation material representing the fire resistant busbar being applicable to one embodiment of the invention.
Fig. 6 to Fig. 8 represents the state diagram at the stuffed heat insulated material of the alar part of the fire resistant busbar of one embodiment of the invention.
Fig. 9 to Figure 11 be represent one embodiment of the invention with the state diagram outside the first outer box of heat insulation material parcel fire resistant busbar.
Figure 12 to Figure 13 represents the state diagram of inserting heat insulation material at the pedestal upper surface of the fire resistant busbar of one embodiment of the invention.
Figure 14 to Figure 16 represents to carry out every heat treated state diagram the supporting member of the fire resistant busbar of one embodiment of the invention.
Figure 17 is the partial perspective view that the supporting member combined hole of the fire resistant busbar representing one embodiment of the invention is formed as the state of slit-shaped.
Figure 18 and Figure 19 represents the state diagram being suitable for heat insulation material between the first outer box and supporting member of the fire resistant busbar of one embodiment of the invention.
Figure 20 to Figure 22 be represent one embodiment of the invention with the state diagram outside the fixing band of heat insulation material parcel fire resistant busbar.
Figure 23 and Figure 24 be the fire resistant busbar representing one embodiment of the invention wrap up the state diagram of heat insulation material taking a step forward of the outer box of assembling second.
Figure 25 and Figure 26 is the figure of the connecting portion of the fire resistant busbar representing one embodiment of the invention and the parcel mode of heat insulation material.
Figure 27 is the state of interior temperature distribution in the fire test of the fire resistant busbar representing one embodiment of the invention.
Reference numeral
101: bus 103: pedestal
110: the first outer boxes 112: alar part
120: supporting member 122: supporting member combined hole
130: fixing band 132: fixing band combined hole
140: the second outer boxes 150: connecting portion
200: the heat insulation material of heat insulation material 210: the first
The heat insulation material of 220: the second heat insulation material 230: the three
240: the four heat insulation materials 1000: fire resistant busbar
Embodiment
This preferred embodiment is described in detail referring to accompanying drawing.But the present invention is not defined in embodiment described herein, the present invention can embody with other form.Embodiment described herein is that the content in order to expose is more thorough and complete, and fully passes on thought of the present invention to provide to those skilled in the art.In specification full text, identical Reference numeral represents identical inscape.
Fig. 1 and Fig. 2 carries out the exploded perspective view before heat insulation unit construction and sectional view to the fire resistant busbar of one embodiment of the invention, Fig. 3 and Fig. 4 carries out the exploded perspective view after heat insulation unit construction and sectional view to the fire resistant busbar of one embodiment of the invention.
Referring to figs. 1 through Fig. 4, the fire resistant busbar 1000 of one embodiment of the invention roughly comprises: the first outer box 110, and its inside possesses bus 101, and in order to strengthen intensity, possesses the alar part 112 extended to side at upper surface and lower surface; First heat insulation material 210, between the alar part 12 being filled in described upper surface and lower surface, blocks the convective heat transfer using air as medium.
First, observe the basic structure of the fire resistant busbar 1000 of one embodiment of the invention, it possesses the first outer box 110 forming regulation space in inside.Possess in described first outer box 110 inside the bus 101 playing the conductor core wire effect be included in cable, to be circulated jumbo electric current by this bus 101.
Because described bus 101 circulates high-tension current usually, therefore first wrap insulate body and and exterior insulation, be then housed in described first outer box 110 inside to protect.The the first outer box 110 comprising this bus 101 can be made into the unit (unit) possessing certain length.
In order to strengthen intensity, extend to form the alar part 112 of certain length to the upper surface of described first outer box 110 and lower surface both sides.Thus, between the alar part 112 of the upper side and lower side, regulation space is formed.
The the first outer box 110 possessing described bus 101 can be arranged on the pedestal 103 of tabular, now, arranges supporting member 120 at regular intervals, to support the first outer box 110 on the certain altitude of pedestal 103.
Can arrange a described supporting member 120 every about 1.5m, in the present embodiment, described supporting member 120 is formed as to be had
the channel-section steel of shaped cross, but be not defined in this.
Under the state being placed on described supporting member 120 by described first outer box 110, fixing band 130 can be combined from upside, to be fixed on described supporting member 120 by described first outer box 110.Described supporting member 120 can be formed with supporting member combined hole 122 respectively, to be combined with described pedestal 103 and described fixing band 130 bolt, fixing band 130 also can be formed with fixing band combined hole 132 corresponding with it.
So, first outer box 110 is arranged on pedestal 103 by supporting member 120 and fixing band 130, cover from upside afterwards and assemble the second box 140, thus completing the making of unit, the unit completed is by connecting portion 150(reference Figure 25) be connected with adjacent unit.
On the other hand, the fire resistant busbar 1000 of one embodiment of the invention can comprise the first heat insulation material 210, and it is filled between the alar part 112 of described upper surface and lower surface, is the convective heat transfer of medium for blocking with air.
As mentioned above, although arrange the alar part 112 of described first outer box 110 to strengthen intensity, when breaking out of fire, the heat trnasfer that the space formed by alar part 112 is carried out may become problem.That is, with the convective heat transfer of being carried out for medium by the air heated at this position, likely cause assembling heat at connecting portion 150 and being short-circuited.
The described first heat insulation material 210 be filled between described upper and lower surface alar part 112 plays the effect blocking this convective heat transfer.Show in the fire test of reality, the impact of being risen on internal temperature by the heat trnasfer of alar part 112 is very large, therefore by using described first heat insulation material 210, blocks this convective heat transfer, thus when breaking out of fire, make fire resistant busbar 1000 can support the sufficiently long time.
On the other hand, in order to block the conduction heat transfer by described supporting member 120, fire resistant busbar 1000 of the present invention can also comprise the second heat insulation material 220, and it is configured at least one place between described supporting member 120 and described first outer box 110 or between described supporting member 120 and described pedestal 103.
When fire resistant busbar 1000 is exposed to thermal environment, heat transfer path is roughly divided into convective heat transfer and conduction heat transfer, wherein, in long fire test, also reach by the conduction heat transfer of described supporting member 120 amount that cannot ignore, therefore need to carry out heat insulation process.
Therefore, as shown in Figure 3 and Figure 4, at least one place in preferably between described supporting member 120 and described first outer box 110 and between described supporting member 120 and described pedestal 103 uses the second heat insulation material 220 to carry out independent heat insulation process, to make conduction heat transfer minimize, preferably all use the second heat insulation material 220 at two places.
Now, the second heat insulation material 220 between described supporting member 120 and described first outer box 110 also plays the effect of the heat trnasfer blocked between supporting member 120 and fixing band 130.Further, described second heat insulation material 220 can wrap up the whole main body of described supporting member 120 further.
On the other hand, fire resistant busbar 1000 of the present invention can also comprise the 3rd heat insulation material 230, and it is filled in the space between described first outer box 110 and described second outer box 140 and described pedestal 103, to block convective heat transfer.
And be filled in the space between described alar part 112 similar with the block convective heat transfer first heat insulation material 210, described 3rd heat insulation material 230 is for blocking the heat trnasfer by the space formed between described first outer box 110 and described two outer boxes 220 and pedestal 103.
In addition, described 3rd heat insulation material 230 also plays and carries out the preliminary effect blocked to the radiant heat from the second outer box 140 outside directly to fire resistant busbar 1000 internal penetration.
So, by using the first heat insulation material 220 of heat insulation material 210, second and the 3rd heat insulation material 230, effectively can block the convective heat transfer in the space formed by dual outer box inside configuration of the present invention, simultaneously, also block by the conduction heat transfer of supporting construction thing and directly from the radiant heat of external penetration, thus improve heat blocking efficiency.
Thus, fire resistant busbar 1000 of the present invention, under harsh flame condition, also can guarantee the sufficient fire resistance as 90 minutes, more than 1000 DEG C required by the JIS8364 specification of target.
On the other hand, fire resistant busbar 1000 of the present invention may further include the 4th heat insulation material 240(with reference to Figure 25 and Figure 26), to wrap up connecting portion 150(reference Figure 25 and Figure 26 for connecting adjacent bus duct) outside, this is illustrated below.
The construction method with the fire resistant busbar 1000 of said structure is described in detail referring to accompanying drawing.
Fig. 5 is the stereogram of an embodiment of the heat insulation material representing the fire resistant busbar being applicable to one embodiment of the invention, Fig. 6 to Fig. 8 represents the state diagram at the stuffed heat insulated material of the alar part of the fire resistant busbar of one embodiment of the invention, Fig. 9 to Figure 11 be represent wrap up one embodiment of the invention with heat insulation material fire resistant busbar outside state diagram, Figure 12 to Figure 13 represents the state diagram of inserting heat insulation material at the pedestal upper surface of the fire resistant busbar of one embodiment of the invention, Figure 14 to Figure 16 represents to carry out every heat treated state diagram to the supporting member of the fire resistant busbar of one embodiment of the invention, Figure 17 is the partial perspective view of the state that the supporting member combined hole of the fire resistant busbar representing one embodiment of the invention is formed with slit-shaped, Figure 18 and Figure 19 represents the state diagram being suitable for heat insulation material between the first outer box and supporting member of the fire resistant busbar of one embodiment of the invention, Figure 20 to Figure 22 be represent one embodiment of the invention with the state diagram outside the fixing band of heat insulation material parcel fire resistant busbar, Figure 23 and Figure 24 be represent one embodiment of the invention assembling fire resistant busbar taking a step forward of the second outer box wrap up the state diagram of heat insulation material, Figure 25 and Figure 26 is the figure of the connecting portion of the fire resistant busbar representing one embodiment of the invention and the parcel mode of heat insulation material.
With reference to Fig. 5 to Figure 26, the construction method of the fire resistant busbar 1000 of one embodiment of the invention roughly comprises: the step of carrying out cutting according to the size of the heat insulation material 200 that will arrange; Being the convective heat transfer of medium to block with air, filling the step of described heat insulation material 200 at the alar part 112 of the first outer box 110; Pedestal 103 arranges supporting member 120 across predetermined distance, and places described first outer box 110 in the upside of described supporting member 120, combine fixing band 130 subsequently to be fixedly installed the step of described first outer box 110; And described in described first outer box 110 arranged outside the step of the second outer box 140.
The heat insulation material 200 being applicable to fire resistant busbar 1000 of the present invention can be ceramic fibre (cerakwool).As shown in Figure 5, ceramic fibre can manufacture blanket (blanket) shape, be specially, by continuous stacked Fibrotic spin ceramic fibre (spun ceramic fiber) after, be shaped to blanket form by needle point method (needlepunching) and manufacture.
Ceramic fibre is very low due to pyroconductivity at high temperature, therefore plays excellent effect of heat insulation, and is made up of silicon dioxide (silica) and aluminium oxide (alumina), therefore superior to the corrosion resistance of bronsted lowry acids and bases bronsted lowry and stable chemical nature.
Being applicable to ceramic fibre of the present invention can be the product with 12.5t, 25t, 50t thickness, wherein adopts 25t more, but considers convenience and the condition such as construction environment or product specification of operation, and preferred elastomeric ground uses the ceramic fibre of various thickness.Certainly, it is ceramic fibre that technological thought of the present invention does not limit described heat insulation material 200, according to circumstances can use other various types of heat insulation materials 200.
On the other hand, when the structure of heat resistant type bus duct 1000 of the present invention is described, according to use location and the effect played of heat insulation material 200, heat insulation material 200 is distinguished into the heat insulation material 220 of the first heat insulation material 210, second, the 3rd heat insulation material 230, the 4th heat insulation material 240 be illustrated, due to different materials need not be adopted, therefore, be that example is described to the situation being suitable for a kind of heat insulation material 200 below, and be referred to as heat insulation material 200 without distinction.
First, according to the size that will be suitable for, utilize the heat insulation material 200 of scissors cutting.Afterwards, as shown in Figure 6 to 8, being the convective heat transfer of medium to block with air, filling described heat insulation material 200 at the alar part 112 of the first outer box 110.
The heat insulation material 200 of the two-layer 25t of having thickness is compactly inserted in described alar part 112 space in void-free mode.Now, as shown in Figure 7, in order to connecting portion 150(is afterwards with reference to Figure 26) link, preferably reserve the vacant portion A not inserting heat insulation material 200 at the regional area of end.
After alar part 112 spatial interpolation enters heat insulation material 200, as shown in Figures 9 to 11, wrap up outside the first outer box 110 with heat insulation material 200, heat insulation material 200 is inserted in the region beyond the described supporting member of use 120 in described first outer box 110 and the position of described fixing band 130.
That is, other positions except the position supported by supporting member 120 of the first outer box 110 are wrapped up with heat insulation material 200.Now, consider the spacing that described supporting member 120 is arranged, after preferably marking (marking) in advance, carry out operation.
In order to fixing described heat insulation material 200, mica tape 202 or iron wire etc. can be used to tie up and to be fixed, or mica tape 202 and iron wire also can be used to tie up fixed simultaneously.
Now, as shown in Figure 9, in order to connecting portion 150(is afterwards with reference to Figure 26) link, the regional area of preferred end reserves the vacant portion A not wrapping up heat insulation material 200.
On the other hand, as shown in Figure 12 and Figure 13, heat insulation material 200 is inserted in the upper surface overall region of described pedestal 103.The heat insulation process of described pedestal 103 can be carried out independent of the heat insulation process of supporting member 120 described later, or carries out in the mode heat insulation material 200 be applicable between supporting member 120 and pedestal 103 being extended to pedestal 103 upper surface entirety.
Afterwards, as shown in Figure 14 to Figure 17, pedestal 103 places supporting member 120 across predetermined distance, and in order to block the conduction heat transfer by described supporting member 120, heat insulation process is carried out to described supporting member 120.
The mode that the heat insulation process of described supporting member 120 inserts heat insulation material 200 by least one place between described supporting member 120 and described first outer box 110 or between described supporting member 120 and described pedestal 103 is carried out.
As mentioned above, the heat insulation material 200 be configured between described supporting member 120 and described pedestal 103 can extend to the upper surface entirety of described pedestal 103.Between described supporting member 120 and described pedestal 103, heat insulation process can certainly be carried out separately, add at the whole upper surface of institute's pedestal 103 and heat insulation material 200 is set.
Now, described heat insulation material 200 can wrap up the main body of described supporting member 120 further.That is, as shown in figure 16, additional heat insulation process can be carried out in the mode of the trunk wrapping up described supporting member 120 with heat insulation material 200.
After heat insulation process is carried out to described supporting member 120, bolt combination is carried out to supporting member 120 and pedestal 103.Now, when bus duct 1000 exposes more than 90 minutes under the flame condition of 1000 DEG C, the thermal expansion of inevitable adjoint first outer box 110 or pedestal 103, if do not adopt the stretching structure that can absorb this thermal expansion, likely causes breakage or the distortion of fire resistant busbar 1000.
Thus, as indicated at 17, preferably make described supporting member 120 bolt in conjunction with supporting member combined hole 122 possess the structure of shape of slit, to absorb thermal expansion.Wherein, described supporting member combined hole 122 can be formed as the length with about 30mm, by using the combined hole of this shape of slit, absorbing contingent thermal expansion under the environmental condition of more than 1000 DEG C, thus can prevent from being in advance out of shape the structural breakage caused.
Terminate described supporting member 120 heat insulation process and after arranging, on the upside of described supporting member 120, place described first outer box 110, fixing band 130 carried out bolt with supporting member 120 and is combined, to be fixedly installed described first outer box 110.Now, as mentioned above, as shown in Figure 18 and Figure 19, between described supporting member 120 and described first outer box 110, insert the heat insulation material 200 for blocking conduction heat transfer.
In addition, as shown in Figure 20 to Figure 22, be provided with the position of described fixing band 130 with heat insulation material 200 parcel, carry out additional heat insulation process with the position exposed laterally to the first outer box 110.
In the process, heat insulation material 200 is set in overlapping (overlap) mode as far as possible, to produce gap between the position avoided and arranged heat insulation material 200, insert heat insulation material 200 fragment in the gap if desired between heat insulation material 200 and invade to reduce heat to greatest extent.
Wrap up and to use after described heat insulation material 200 aforesaid mica tape 202 or iron wire to carry out tying up fixing, unclamp to prevent it.
After so heat insulation process being carried out to the exposed part of fixing band 130, as shown in figure 23 and figure 24, heat insulation material 200 is inserted again to reduce the space that may be formed between described first outer box 110 and described second outer box 140 as far as possible to entirety, cover the second outer box 140 afterwards, thus collecting the first outer box 110 in the inner space formed between pedestal 101 and the second outer box 140.
In addition, as illustrated in figs. 25 and 26, connect adjacent fire resistant busbar 1000 by connecting portion 150, outside described connecting portion 150, insert heat insulation material 200 afterwards, thus complete the construction of fire resistant busbar 1000.Wherein, the heat insulation material 200 be inserted in outside connecting portion 150 is equivalent to the 4th heat insulation material 240.
Figure 27 is the schematic diagram representing the interior temperature distribution of the fire resistant busbar of one embodiment of the invention in fire test.
As shown in figure 27, because fire resistant busbar 1000 of the present invention has been suitable for the heat insulation process of convection current and conduction, therefore, even if place more than 90 points under 1000 DEG C of flame conditions, internal temperature also maintains less than 100 DEG C, thus, not only at the possess bus 101 first outer box 110, even if the connecting portion 150 with about 150 DEG C heat-resistant qualities also can give full play to heat resistance.
Thermal endurance bus duct of the present invention described above and construction method thereof are by improving the fire resistance of bus duct, the refractory standard after strengthening can be met, and the short circuit phenomenon occurred because convective heat transfer causes bus duct connecting portion to assemble heat can be prevented, and the phenomenon that bus duct can be prevented to be distorted because thermal deformation causes stretching.In addition, when breaking out of fire, because time enough is brought into normal play function, therefore, it is possible to guarantee stability and reliability.
Above with reference to being illustrated embodiments of the invention, but the technology people in affiliated field can to the various modifications and changes of the invention process on the basis of the thought of the present invention and scope that do not depart from the record of following claim.Therefore, when the example be out of shape comprises inscape of the present invention, be interpreted as it and be all included in technical scope of the present invention.
Claims (13)
1. a fire resistant busbar, is characterized in that, comprising:
First outer box, its inside is provided with bus, and in order to strengthen intensity, possesses the alar part extended to side at upper surface and lower surface;
First heat insulation material, is filled between described upper surface and the alar part of lower surface, for blocking the convective heat transfer using air as medium.
2. fire resistant busbar according to claim 1, is characterized in that, comprises further:
Supporting member, pedestal is arranged every predetermined distance, for supporting described first outer box on specified altitude;
Fixing band, for being fixed on described supporting member by described first outer box.
3. fire resistant busbar according to claim 2, is characterized in that,
Comprise the second heat insulation material further, described second heat insulation material to be configured between described supporting member and described first outer box or between described supporting member and described pedestal at least one place, for blocking the conduction heat transfer via described supporting member.
4. fire resistant busbar according to claim 3, is characterized in that,
Described second heat insulation material wraps up the main body of described supporting member further.
5. fire resistant busbar according to claim 3, is characterized in that,
The whole upper surface of described pedestal is provided with heat insulation material to carry out heat insulation process.
6. fire resistant busbar according to claim 3, is characterized in that, comprises further:
Second outer box, it is configured in the upside of described pedestal in the mode in the outside surrounding described first outer box;
3rd heat insulation material, is filled in the space between described first outer box and described second outer box and described pedestal, for blocking convective heat transfer.
7. fire resistant busbar according to claim 6, is characterized in that,
Comprise the 4th heat insulation material further, described 4th heat insulation material wraps up outside the connecting portion for connecting adjacent bus duct.
8. fire resistant busbar according to claim 2, is characterized in that,
The combined hole for bolt combination being formed in described supporting member is formed as shape of slit.
9. a construction method for fire resistant busbar, is characterized in that, comprising:
According to the step of the heat insulation material of size cutting that will arrange;
Being the convective heat transfer of medium to block with air, filling the step of described heat insulation material at the alar part of the first outer box;
Pedestal arranges supporting member every predetermined distance, and after described first outer box is placed in the upside of described supporting member, in conjunction with fixing band to be fixedly installed the step of described first outer box; And
The step of the second outer box described in the arranged outside of described first outer box.
10. fire resistant busbar according to claim 9, is characterized in that, comprises further,
In order to block the conduction heat transfer via described supporting member, described supporting member is carried out every heat treated step.
11. fire resistant busbar according to claim 10, is characterized in that,
Described heat insulation material wraps up the main body of described supporting member further.
12. fire resistant busbar according to claim 10, is characterized in that,
Make the heat insulation material be configured between described supporting member and described pedestal extend to the whole upper surface of described pedestal, or insert heat insulation material further at the whole upper surface of described pedestal, thus carry out heat insulation process.
13. fire resistant busbar according to claim 9, is characterized in that, comprise further,
After adjacent bus duct is connected to connecting portion, insert the step of heat insulation material in the outside of described connecting portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20130123180A KR20150044159A (en) | 2013-10-16 | 2013-10-16 | fire-resistant busduct and method of constructing the same |
| KR10-2013-0123180 | 2013-10-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104577914A true CN104577914A (en) | 2015-04-29 |
| CN104577914B CN104577914B (en) | 2017-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310685285.2A Active CN104577914B (en) | 2013-10-16 | 2013-12-13 | Fire resistant busbar and its construction method |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20150044159A (en) |
| CN (1) | CN104577914B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102606754B1 (en) * | 2016-07-21 | 2023-11-24 | 엘에스전선 주식회사 | mold frame for joint of mold type busduct |
| KR102124683B1 (en) * | 2016-08-08 | 2020-06-18 | 엘에스전선 주식회사 | mold type busduct |
| KR102339372B1 (en) * | 2017-05-15 | 2021-12-14 | 엘에스전선 주식회사 | Busduct system |
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| CN202500809U (en) * | 2012-03-22 | 2012-10-24 | 安徽安风风机有限公司 | Fixing device for high-temperature fan |
| CN202840421U (en) * | 2012-05-03 | 2013-03-27 | 上海精成电器成套有限公司 | Fireproof unit of bus trunk |
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- 2013-12-13 CN CN201310685285.2A patent/CN104577914B/en active Active
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|---|---|---|---|---|
| US5401906A (en) * | 1993-05-17 | 1995-03-28 | Square D Company | Water resistant supplementary joint cover for an electrical busway |
| CN2206504Y (en) * | 1994-11-08 | 1995-08-30 | 钱霆 | Heat insulation fire-proof bus-bar trunk |
| CN2257100Y (en) * | 1995-10-21 | 1997-06-25 | 林清芬 | Sealed fire-proof air insulation bus slot |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20150044159A (en) | 2015-04-24 |
| CN104577914B (en) | 2017-09-29 |
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