CN103972833A - Fireproof bus duct - Google Patents
Fireproof bus duct Download PDFInfo
- Publication number
- CN103972833A CN103972833A CN201410217243.0A CN201410217243A CN103972833A CN 103972833 A CN103972833 A CN 103972833A CN 201410217243 A CN201410217243 A CN 201410217243A CN 103972833 A CN103972833 A CN 103972833A
- Authority
- CN
- China
- Prior art keywords
- bus duct
- plate
- fireproof
- fire
- interior
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
Landscapes
- Building Environments (AREA)
- Installation Of Bus-Bars (AREA)
Abstract
The invention discloses a fireproof bus duct. An upper cover board comprises an upper heat conduction bending board with a concave groove and a heat dissipating board on the concave groove. The heat dissipating board is provided with heat dissipating holes, a top cover is arranged on the heat dissipating board, and a certain sealing space is formed between the top cover and the heat dissipating board. A lower cover board comprises a lower heat conduction bending board with an arch and a bottom board located at the bottom of the arch. The concave groove and the arch are embedded between outer side boards. A conducting bar is arranged between the concave groove and the arch, the left side and the right side of the conducting bar are provided with inner side boards, fireproof insulating cushion blocks are arranged on the upper portion and the lower portion of the conducting bar, fireproof aluminum silicate wool felt and fireproof boards are arranged between the inner side boards and the corresponding outer side boards, in concave groove and on the arch, and a conducting strip of the conducting bar is covered with a mica tape. According to the fireproof bus duct, the heat produced by the conducting bar can be dissipated in time, the spontaneous combustion of the conducting bar due to the high temperature is avoided, and the service life of the bus duct is prolonged; the bus duct has good fireproof performance, and even when the outside breaks out the fire, the conducting bar cannot be burned, and the bus duct can still normally supply power.
Description
Technical field
The present invention relates to fireproof bus duct, belong to transmission facility field.
Background technology
Along with the develop rapidly in city, skyscraper is more and more, and in skyscraper, densely populated phenomenon is obvious, and power load sharply increases, and power load increases must bring disaster hidden-trouble, prevents having great importance of electricity consumption fire.Refractory busbar in the market is mainly made up of fire-resistant aluminium silicate wool felt and fireproof paint, so only focuses on the fire resistance of bus, but has ignored its heat dispersion.The fireproof bus duct of this type is widely used in the key projects such as the electric power conveying route of fire-fighting equipment, if bus duct does not possess necessary heat dispersion, once the high temperature that the connection busbar in bus duct produces can not leave in time, just probably cause fire, very large at power consumption, in densely populated building building, will bring very serious loss.
Traditional bus duct fire protecting performance is poor, structure is upper cover plate, lower cover and side plate, be fixedly connected to form external shell, busbar is fixed in housing, and upper cover plate and lower cover are slab construction, bus duct internal heat is difficult to scatter and disappear out, busbar is short useful life, and the heat on single opposite conduction row can not be discharged in time, reaches certain high temperature, will there is spontaneous combustion in bus duct, cause fire; Meanwhile, current bus duct fire protecting performance is poor, in fire, is easy to be ignited by fire, causes power failure, brings very large obstacle to relief fire.
Summary of the invention
In order to solve the problem of above-mentioned existence, the invention discloses a kind of fireproof bus duct, in use, the heat that busbar produces can be shed this bus duct in time, avoids busbar due to high temperature spontaneous combustion, extends the useful life of bus duct; Simultaneously this bus duct has good fire resistance, even if extraneous breaking out of fire can not be burned to busbar yet, bus duct still can normal power supply, and the scope of application is wider.
Fireproof bus duct, comprise upper cover plate, lower cover and two outer panels, outer panel is " [" shape, equal 90 ° of the two ends of outer panel are bent to form outer flanging, the outer flanging of each outer panel is fixed with parallel upper cover plate and lower cover respectively, between two outer panels, be provided with busbar, described upper cover plate comprises bent plate in one-time formed heat conduction, in heat conduction, the centre of bent plate is bent to form flat depression groove, the sidewall of recessed groove and bottom vertical, the top of recessed groove is provided with the top cover raising up, below top cover, be provided with the heating panel that is laid in recessed groove opening part, louvre is distributing on heating panel, in recessed groove, fill fire-resistant aluminium silicate wool felt, the lower surface of heating panel is laid refractory slab,
Described lower cover comprises bent plate under one-time formed heat conduction, and under heat conduction, the centre of bent plate is bent to form flat-top and arches upward, and the sidewall arching upward is vertical with top, and the bottom of arching upward is provided with base plate, the fire-resistant aluminium silicate wool felt of the middle filling of arching upward, base plate be equipped with refractory slab above;
The both sides of described several busbars are side by side respectively arranged with interior plate, the two ends up and down of interior plate are fixed with the bottom of recessed groove and the top of arching upward respectively, between each interior plate and corresponding outer panel, all fill fire-resistant aluminium silicate wool felt, each outer panel inner surface is provided with one deck refractory slab.
The louvre of described heating panel is coated with fireproof paint layer around.
Described busbar is made up of several conducting strips, and each conducting strip outside is all coated with mica tape.
The two ends up and down of described busbar are respectively equipped with fire safe type cross-over block, and fire safe type cross-over block is placed between two interior plates.
Described each fire safe type cross-over block is fixed by a bolt through two interior plates respectively, and this bolt is simultaneously through fire safe type cross-over block.
Described interior plate be " [" shape, equal 90 ° of the two ends of interior plate are bent to form interior flanging, two interior flangings of each interior plate are adjacent to respectively at the bottom of recessed groove and the top of arching upward, and are all bolted to connection.
Described recessed groove and the sidewall outer surface arching upward are all adjacent to outer panel, and are bolted, and the outer flanging of outer panel is bolted with upper cover plate and lower cover respectively.
Beneficial effect of the present invention:
(1) in heat conduction, under bent plate and heat conduction, bent plate all adopts one-shaping technique to be made, bent plate material uniformity under bent plate and heat conduction in heat conduction, heat conductivility is stable, heat transmission is quick, recessed groove can transmit the heat of bus duct inside out fast with arching upward, and improves the radiating efficiency of bus duct;
(2) when busbar is worked, produce heat, the upwards drift of heat meeting nature, on heat, move from louvre and spread out, enter into the space between top cover and heating panel, heat obtains suitable release, the structural design of top cover, not only allow bus duct internal heat have an interim Free up Memory, increase the surface area of heat to outdiffusion simultaneously;
(3) louvre fireproof paint layer around runs into after naked light, will expand and block louvre, avoids the intensity of a fire to spread towards busbar, even extraneous breaking out of fire, the busbar in bus duct still can ensure not burned, continues stably to work;
(4) on every of busbar conducting strip, be all coated mica tape, mica tape all has fire-retardant effect, further improve fire protecting performance, the fire safe type cross-over block at the upper and lower two ends of busbar, and the fire-resistant aluminium silicate wool felt of busbar surrounding, busbar surrounding is surrounded, play good fireproofing function;
(5) refractory slab is arranged on the surrounding of bus duct inside, is first fire compartment wall, can effectively stop the intensity of a fire to bus duct diffusion inside.
Brief description of the drawings
Fig. 1 is structural representation of the present invention,
Reference numerals list: 1-upper cover plate, bent plate in 1-1-heat conduction, 1-2-recessed groove, 1-3-top cover, 1-4-heating panel, 1-5-louvre, 2-lower cover, bent plate under 2-1-heat conduction, 2-2-arching upward, 2-3-base plate, 3-outer panel, 3-1-outer flanging, 4-busbar, 5-fire-resistant aluminium silicate wool felt, 6-refractory slab, 7-interior plate, 7-1-interior flanging, 8-mica tape, 9-fire safe type cross-over block, 10-1,10-2,10-3,10-4-bolt.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention.Should understand following embodiment is only not used in and limits the scope of the invention for the present invention is described.
Visible by reference to the accompanying drawings, the upper cover plate 1 of bus duct of the present invention and lower cover 2 are fixed with the outer flanging 3-1 of parallel two outer panels 3 by bolt 10-4 respectively, in heat conduction, under the recessed groove 1-2 of bent plate 1-1 and heat conduction, the 2-2 that arches upward of bent plate 2-1 is all embedded between two outer panels 3, the sidewall of recessed groove 1-2 and the 2-2 that arches upward is fixing by bolt 10-3 and outer panel 3 respectively, in recessed groove 1-2, fill fire-resistant aluminium silicate wool felt 5, above fire-resistant aluminium silicate wool felt 5, be lined with one deck refractory slab 6, refractory slab 6 is the heating panel 1-4 with louvre 1-5 that covers recessed groove 1-2 opening part above, above heating panel 1-4, be provided with top cover 1-3, between top cover 1-3 and heating panel 1-4, there is certain heat-dissipating space, in top cover 1-3 and heat conduction, bent plate 1-1 is fixing for sealing.Arch upward the bottom of 2-2 be provided with heat conduction under bent plate 2-1 seal fixing base plate 2-3, above base plate 2-3, be lined with one deck refractory slab 6, in refractory slab 6 2-2 that arches upward above, fill full fire-resistant aluminium silicate wool felt 5.Arch upward and be provided with busbar 4 between the top of 2-2 and the bottom of recessed groove 1-2, the both sides of busbar 4 are respectively equipped with interior plate 7, interior plate 7 is fixedly connected with bolt 10-2 with the top of the 2-2 that arches upward and the bottom of recessed groove 1-2 by the interior flanging 7-1 at upper and lower two ends, the two ends up and down of busbar 4 are equipped with fire safe type cross-over block 9, fire safe type cross-over block 9 is fixing by bolt 10-1 and interior plate 7, the inwall of outer panel 3 is equipped with one deck refractory slab 6, fills full fire-resistant aluminium silicate wool felt 5 between refractory slab 6 and interior plate 7.
Busbar 4 is made up of several conducting strips, and there is mica tape 8 each conducting strip outside all revenge.Mica tape 8 plays a protective role to conducting strip, and mica tape 8 and fire safe type cross-over block 9 all play insulation and fire-resistant effect.
In heat conduction of the present invention, bent plate 1-1 adopts one-shaping technique to make, and recessed groove 1-2 extends to bus duct inside, can preferably the heat of bus duct inside be transmitted out, accelerates bus duct heat radiation; Under heat conduction, the principle of bent plate 2-1 is identical with the principle of bent plate 1-1 in heat conduction.
Between heating panel 1-4 and top cover 1-3, form an inner sealing space, the heat that busbar 4 operations produce can rise by nature, and heat radiating via hole 1-5 enters heating panel 1-4 top, and heat is discharged, more traditional bus duct, and radiating effect is faster.
Fire-resistant aluminium silicate wool felt 5 and refractory slab 6 are filled in bus duct from inside to outside, play effective fireproofing function, and protection busbar 4 is not subject to influence of fire.
The disclosed technological means of the present invention program is not limited only to the disclosed technological means of above-mentioned technological means, also comprises the technical scheme being made up of above technical characterictic combination in any.
Claims (7)
1. fireproof bus duct, comprise upper cover plate (1), lower cover (2) and two outer panels (3), outer panel (3) is " [" shape, equal 90 ° of the two ends of outer panel (3) are bent to form outer flanging (3-1), the outer flanging (3-1) of each outer panel (3) is fixing with parallel upper cover plate (1) and lower cover (2) respectively, between two outer panels (3), be provided with busbar (4), it is characterized in that described upper cover plate (1) comprises bent plate in one-time formed heat conduction (1-1), the centre of bent plate in heat conduction (1-1) is bent to form flat depression groove (1-2), sidewall and the bottom vertical of recessed groove (1-2), the top of recessed groove (1-2) is provided with the top cover (1-3) raising up, top cover (1-3) is provided with the heating panel (1-4) that is laid in recessed groove (1-2) opening part below, louvre (1-5) is distributing on heating panel (1-4), in recessed groove (1-2), fill fire-resistant aluminium silicate wool felt (5), the lower surface of heating panel (1-4) is laid refractory slab (6),
Described lower cover (2) comprises bent plate under one-time formed heat conduction (2-1), the centre of bent plate under heat conduction (2-1) is bent to form flat-top arch upward (2-2), the sidewall of (2-2) of arching upward is vertical with top, the arch upward bottom of (2-2) is provided with base plate (2-3), arch upward and fill fire-resistant aluminium silicate wool felt (5) in (2-2), base plate (2-3) be equipped with refractory slab (6) above;
The both sides of described busbar (4) are respectively arranged with interior plate (7), the two ends up and down of interior plate (7) are fixed with the bottom of recessed groove (1-2) and the top of arch upward (2-2) respectively, between each interior plate (7) and corresponding outer panel (3), all fill fire-resistant aluminium silicate wool felt (5), each outer panel (3) inner surface is provided with one deck refractory slab (6).
2. fireproof bus duct according to claim 1, is characterized in that the louvre (1-5) of described heating panel (1-4) is coated with fireproof paint layer around.
3. fireproof bus duct according to claim 1, is characterized in that described busbar (4) is made up of several conducting strips, and each conducting strip outside is all coated with mica tape (8).
4. fireproof bus duct according to claim 3, is characterized in that the two ends up and down of described busbar (4) are respectively equipped with fire safe type cross-over block (9), and fire safe type cross-over block (9) is placed between two interior plates (7).
5. fireproof bus duct according to claim 4, it is characterized in that described each fire safe type cross-over block (9) is fixing by a bolt (10-1) through two interior plates (7) respectively, this bolt (10-1) is simultaneously through fire safe type cross-over block (9).
6. fireproof bus duct according to claim 5, it is characterized in that described interior plate (7) is " [" shape, equal 90 ° of the two ends of interior plate (7) are bent to form interior flanging (7-1), two interior flangings (7-1) of each interior plate (7) are adjacent to respectively at the bottom of recessed groove (1-2) and the top of (2-2) of arching upward, and are all fixedly connected with by bolt (10-2).
7. fireproof bus duct according to claim 1, the sidewall outer surface that it is characterized in that described recessed groove (1-2) and arch upward (2-2) is all adjacent to outer panel (3), and fixing by bolt (10-3), the outer flanging (3-1) of outer panel (3) is fixing by bolt (10-4) with upper cover plate (1) and lower cover (2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410217243.0A CN103972833B (en) | 2014-05-22 | 2014-05-22 | Fireproof bus duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410217243.0A CN103972833B (en) | 2014-05-22 | 2014-05-22 | Fireproof bus duct |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103972833A true CN103972833A (en) | 2014-08-06 |
| CN103972833B CN103972833B (en) | 2016-06-08 |
Family
ID=51242039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410217243.0A Active CN103972833B (en) | 2014-05-22 | 2014-05-22 | Fireproof bus duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103972833B (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701792A (en) * | 2014-11-10 | 2015-06-10 | 江苏华鹏智能电气股份有限公司 | Flame-retarding bus slot |
| CN104868422A (en) * | 2015-06-01 | 2015-08-26 | 金海新源电气江苏有限公司 | Flame-retardant waterproof bus groove and manufacturing process thereof |
| CN105098685A (en) * | 2015-08-03 | 2015-11-25 | 镇江加勒母线有限公司 | Ceramic silicone rubber fireproof bus duct |
| CN105186419A (en) * | 2015-09-22 | 2015-12-23 | 镇江加勒母线有限公司 | Waterproof and fireproof multifunctional bus duct |
| CN106711892A (en) * | 2015-11-17 | 2017-05-24 | 江苏向荣电气有限公司 | Intensive fire-resistant bus duct |
| CN107546693A (en) * | 2017-10-23 | 2018-01-05 | 江苏瑞仁汽车部件有限公司 | A kind of fireproof bus duct |
| CN107591759A (en) * | 2017-09-04 | 2018-01-16 | 深圳市沃尔核材股份有限公司 | One kind is with unidirectional thermal insulation board fireproof bus duct |
| CN107611891A (en) * | 2017-10-23 | 2018-01-19 | 江苏瑞仁汽车部件有限公司 | Fire-type bus duct |
| CN107742864A (en) * | 2017-10-24 | 2018-02-27 | 镇江市益宝电气科技有限公司 | A kind of intelligent fire-proofing type bus duct for Internet of Things |
| CN107910839A (en) * | 2017-12-27 | 2018-04-13 | 嘉兴恒杰电力设备安装有限公司 | A kind of bus duct of silicone adhesive hatching solid |
| CN107994522A (en) * | 2016-10-26 | 2018-05-04 | 镇江港诚电力设备有限公司 | A kind of fireproof bus duct |
| CN108493874A (en) * | 2018-04-08 | 2018-09-04 | 江苏华强电力设备有限公司 | A kind of high-strength intensive copper conductor bus duct of aluminum alloy casing |
| CN108519476A (en) * | 2018-04-11 | 2018-09-11 | 中国农业大学 | Karst bedrock fracture water and soil misses the analogy method and device of process |
| CN108879541A (en) * | 2018-06-06 | 2018-11-23 | 荣马电器有限公司 | A kind of fireproof bus duct |
| CN108899839A (en) * | 2018-08-16 | 2018-11-27 | 江苏金利电气有限公司 | A kind of flame-resistant insulation bus duct and preparation method thereof |
| CN109936099A (en) * | 2017-12-16 | 2019-06-25 | 众联兴电力科技股份有限公司 | A kind of fireproof bus duct |
| CN110445074A (en) * | 2019-08-02 | 2019-11-12 | 江苏华强电力设备有限公司 | A kind of fireproof bus duct of high security |
| CN110459997A (en) * | 2019-09-26 | 2019-11-15 | 广州干线通科技有限公司 | A kind of fire resistant busbar |
| CN113629627A (en) * | 2021-08-26 | 2021-11-09 | 广东百利得科技有限公司 | Fire-resistant bus duct |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3681509A (en) * | 1971-06-28 | 1972-08-01 | Gen Electric | Bus bar electric power distribution system with heat pipe heat dissipating means |
| CN2286935Y (en) * | 1996-11-21 | 1998-07-29 | 北京京安兴达机电设备公司 | Fire-retardant bus slot |
| CN201222633Y (en) * | 2008-06-30 | 2009-04-15 | 陈建峰 | Improved bus slot cover board |
| CN203014310U (en) * | 2012-11-20 | 2013-06-19 | 长沙亚明电子科技发展有限公司 | Heat resistant busway |
| CN203932912U (en) * | 2014-05-22 | 2014-11-05 | 江苏瑞欧宝电气有限公司 | Fireproof bus duct |
| JP2015012696A (en) * | 2013-06-28 | 2015-01-19 | 日東工業株式会社 | Bar holder |
-
2014
- 2014-05-22 CN CN201410217243.0A patent/CN103972833B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3681509A (en) * | 1971-06-28 | 1972-08-01 | Gen Electric | Bus bar electric power distribution system with heat pipe heat dissipating means |
| CN2286935Y (en) * | 1996-11-21 | 1998-07-29 | 北京京安兴达机电设备公司 | Fire-retardant bus slot |
| CN201222633Y (en) * | 2008-06-30 | 2009-04-15 | 陈建峰 | Improved bus slot cover board |
| CN203014310U (en) * | 2012-11-20 | 2013-06-19 | 长沙亚明电子科技发展有限公司 | Heat resistant busway |
| JP2015012696A (en) * | 2013-06-28 | 2015-01-19 | 日東工業株式会社 | Bar holder |
| CN203932912U (en) * | 2014-05-22 | 2014-11-05 | 江苏瑞欧宝电气有限公司 | Fireproof bus duct |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701792A (en) * | 2014-11-10 | 2015-06-10 | 江苏华鹏智能电气股份有限公司 | Flame-retarding bus slot |
| CN104868422A (en) * | 2015-06-01 | 2015-08-26 | 金海新源电气江苏有限公司 | Flame-retardant waterproof bus groove and manufacturing process thereof |
| CN104868422B (en) * | 2015-06-01 | 2017-10-13 | 金海新源电气江苏有限公司 | Fire-resistant waterproof bus duct and its manufacturing process |
| CN105098685A (en) * | 2015-08-03 | 2015-11-25 | 镇江加勒母线有限公司 | Ceramic silicone rubber fireproof bus duct |
| CN105186419A (en) * | 2015-09-22 | 2015-12-23 | 镇江加勒母线有限公司 | Waterproof and fireproof multifunctional bus duct |
| CN106711892A (en) * | 2015-11-17 | 2017-05-24 | 江苏向荣电气有限公司 | Intensive fire-resistant bus duct |
| CN107994522A (en) * | 2016-10-26 | 2018-05-04 | 镇江港诚电力设备有限公司 | A kind of fireproof bus duct |
| CN107591759B (en) * | 2017-09-04 | 2024-04-05 | 深圳市沃尔核材股份有限公司 | Refractory bus duct with unidirectional heat insulation plate |
| CN107591759A (en) * | 2017-09-04 | 2018-01-16 | 深圳市沃尔核材股份有限公司 | One kind is with unidirectional thermal insulation board fireproof bus duct |
| CN107546693A (en) * | 2017-10-23 | 2018-01-05 | 江苏瑞仁汽车部件有限公司 | A kind of fireproof bus duct |
| CN107611891A (en) * | 2017-10-23 | 2018-01-19 | 江苏瑞仁汽车部件有限公司 | Fire-type bus duct |
| CN107742864A (en) * | 2017-10-24 | 2018-02-27 | 镇江市益宝电气科技有限公司 | A kind of intelligent fire-proofing type bus duct for Internet of Things |
| CN109936099A (en) * | 2017-12-16 | 2019-06-25 | 众联兴电力科技股份有限公司 | A kind of fireproof bus duct |
| CN107910839A (en) * | 2017-12-27 | 2018-04-13 | 嘉兴恒杰电力设备安装有限公司 | A kind of bus duct of silicone adhesive hatching solid |
| CN108493874A (en) * | 2018-04-08 | 2018-09-04 | 江苏华强电力设备有限公司 | A kind of high-strength intensive copper conductor bus duct of aluminum alloy casing |
| CN108519476A (en) * | 2018-04-11 | 2018-09-11 | 中国农业大学 | Karst bedrock fracture water and soil misses the analogy method and device of process |
| CN108519476B (en) * | 2018-04-11 | 2020-09-18 | 中国农业大学 | Simulation method and device for water and soil leakage process of karst bedrock cracks |
| CN108879541A (en) * | 2018-06-06 | 2018-11-23 | 荣马电器有限公司 | A kind of fireproof bus duct |
| CN108879541B (en) * | 2018-06-06 | 2024-06-11 | 荣马电器有限公司 | Fire-resistant bus duct |
| CN108899839A (en) * | 2018-08-16 | 2018-11-27 | 江苏金利电气有限公司 | A kind of flame-resistant insulation bus duct and preparation method thereof |
| CN110445074A (en) * | 2019-08-02 | 2019-11-12 | 江苏华强电力设备有限公司 | A kind of fireproof bus duct of high security |
| CN110459997A (en) * | 2019-09-26 | 2019-11-15 | 广州干线通科技有限公司 | A kind of fire resistant busbar |
| CN113629627A (en) * | 2021-08-26 | 2021-11-09 | 广东百利得科技有限公司 | Fire-resistant bus duct |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103972833B (en) | 2016-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103972833A (en) | Fireproof bus duct | |
| CN205986037U (en) | A fire -proof bus duct | |
| CN103579965A (en) | Fireproof cable trough box | |
| CN207504500U (en) | A kind of novel aluminum alloy composite fire cable box | |
| CN203932912U (en) | Fireproof bus duct | |
| CN104505789A (en) | NHMCX-type fire-resistant bus duct | |
| CN205944968U (en) | A fire -proof bus duct | |
| CN212835982U (en) | Converter transformer valve room valve side sleeve pipe hole fire prevention shutoff transformation structure | |
| CN203289039U (en) | Bus duct housing | |
| CN205319653U (en) | Fire -proof bus duct | |
| CN201708506U (en) | Novel fireproof bus duct bridge | |
| CN214069512U (en) | High flame retardant bus duct | |
| CN204349386U (en) | Bus duct | |
| CN112652972A (en) | Outdoor protection equipment for power grid system | |
| CN205319647U (en) | Radiating bus duct | |
| CN208608693U (en) | A kind of fireproof bus duct | |
| CN207268949U (en) | A kind of fire-proof high-temperature resistant aluminium alloy cable | |
| CN202231391U (en) | Easy-assembly bus groove | |
| CN212412696U (en) | Aluminum alloy shell bus duct | |
| CN210430853U (en) | Fire-resistant bus duct | |
| CN211183296U (en) | Waterproof and fireproof bus duct | |
| CN202353142U (en) | Fire screen structure for bus duct | |
| CN207459656U (en) | A kind of fire-type bus duct | |
| CN210201418U (en) | Insulation protection type fire-resistant bus duct | |
| CN204947522U (en) | A kind of lightweight water-and fire-proof bus duct |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 212215 No. 858 Bo Bo Road, Yangzhong Economic Development Zone, Zhenjiang, Jiangsu Applicant after: JIANGSU RUIOUBAO ELECTRIC CO., LTD. Address before: 212215 No. 858 Bo Bo Road, Yangzhong Economic Development Zone, Zhenjiang, Jiangsu Applicant before: Jiangsu auspicious Opel Electric Applicance Co., Ltd |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |