CN104235512A - Fireproof sealing method for cables - Google Patents
Fireproof sealing method for cables Download PDFInfo
- Publication number
- CN104235512A CN104235512A CN201310255772.5A CN201310255772A CN104235512A CN 104235512 A CN104235512 A CN 104235512A CN 201310255772 A CN201310255772 A CN 201310255772A CN 104235512 A CN104235512 A CN 104235512A
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- China
- Prior art keywords
- cable
- fire
- putty
- organic putty
- thickness
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
- F16L5/04—Sealing to form a firebreak device
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
The invention provides a fireproof sealing method for cables and belongs to the technical field of cable construction. The technical scheme includes steps of setting a partition in a cable trench at intervals of 80-100m for flame-retardant cables; setting a partition at intervals of 60m for non-flame-retardant cables, packing two sides of the partitions by fireproof partition plates more than 10mm in thickness and the middle by stacking inorganic putty, fireproof package or fire-resistant bricks; (2) wrapping the surroundings of the cables in a fireproof wall by organic putty not smaller than 20mm in thickness; (3) compactly partitioning and wrapping the surroundings of the cables on two sides of the fireproof wall by the organic putty, wherein the thickness of the two sides of the fireproof wall is larger than 20mm of the surface layer of the fireproof wall, the width of the organic putty around the cables is not smaller than 30mm, the organic putty is geometrically shaped, and the surface layer of the organic putty is flat; (4) subjecting gaps of the cable trench and the fireproof wall into architrave sealing by the organic putty, wherein the thickness of the organic putty is larger than 10mm of the surface layer of the fireproof wall, the width of the organic putty is not smaller than 20mm, the organic putty is geometrically shaped, and the surface layer of the organic putty is flat.
Description
Technical field
The invention belongs to cable construction technical field, particularly relate to the method for a kind of Cable Fireproof Plugging construction.
Background technique
Fireproof blocking, to make at cable threading hole and electrical equipment hole of fire-proof sealing material exactly and cut off, its effect prevents from, because the spontaneous combustion of cable self-heating or extraneous naked light make fire spread, reaching the object of protection personnel and device security.The principle of fireproof blocking is that plugging material plays swelling heat absorption and heat-blocking action.
Summary of the invention
In order to improve fireproofing and block burn of cable measure, avoiding the serious accident reduced because ignition of cable causes, to ensure the normal production of enterprise, the invention provides a kind of method of Cable Fireproof Plugging.
Object of the present invention is realized by following technical proposals:
(1) for flame retardant cable, at cable channel, a partition is set every 80 ~ 100m place; For non-flame resistant cable, a partition is set every 60m, cuts off both sides and adopt the fire bulkhead packing of more than 10mm thickness, the inorganic putty of middle employing, fire prevention bag or refractory brick to pile up;
(2) the organic putty being less than 20mm of must must not adopt around the cable in fire-wall wraps up;
(3) utilize organic putty to carry out closely knit separation parcel around the cable of fire-wall both sides, its thickness of two sides is greater than the 20mm on fire-wall top layer, and the organic putty width around cable must not be less than 30mm, and in geometric figure, surface layer is smooth;
(4) intermediate gap of bottom of trench, fire bulkhead should adopt organic putty to do stitch shutoff, and thickness is greater than the 10mm on fire-wall top layer, and width must not be less than 20mm, and in geometric figure, surface layer is smooth.
Embodiment
Below by specific embodiment, the present invention is further illustrated.
Preparation of construction (1) material prepares: statistics mounting point, mounting type, determine required organic putty, inorganic putty, fire rated partition, fireproof paint, fire prevention bag and there is the quantity of installation accessories of associated refractory grade, carry out the preparatory work of material; Carry out visual examination after material arrival, organic putty be not oxidized, not bleed, hardness appropriateness; Inorganic putty does not lump, free from admixture; Fire bulkhead smooth bright and clean, thickness is even.(2) technique preparation: check construction drawing, confirms that all kinds of shutoff modes meets design and code requirement; Fire-proof sealing material must have the qualified examining report that National Fire building materials quality supervision and inspection center provides, and by fire chief Department certification above the provincial level, and obtains fire product and to put on record certificate.(3) personnel arrangement: technician, safety, quality owner, workmen.(4) facility prepare: heating plant; Small handheld cutting machine; Work tool etc. needed for the installation such as support, fire proofing material.
Partition in fire-wall (1) outdoor cable ditch adopts fire-wall.For flame retardant cable, at cable channel, a partition is set every 80 ~ 100m place; For non-flame resistant cable, a partition is set every 60m, is generally arranged on and closes on cable channel infall.When cable enters the protection building such as room, switch gear room by cable channel, fire-wall is adopted to cut off.(2) fire-wall mounting type: both sides adopt the fire bulkhead packing of more than 10mm thickness, middle inorganic putty, fire prevention bag or the refractory brick of adopting is piled up, and its thickness is determined (being generally not less than 250mm) according to the performance of product.(3) the organic putty being less than 20mm of must must not adopt around the cable in fire-wall wraps up.(4) the organic putty in fire-wall top is filled and led up whole, and adds a cover fire bulkhead: two draining holes must be left in bottom, and draining hole place can utilize fragment of brick to build by laying bricks or stones.(5) fire-wall must adopt hot galvanizing angle steel to do support to be fixed.(6) utilize organic putty to carry out closely knit separation parcel around the cable of fire-wall both sides, its thickness of two sides is greater than the 20mm on fire-wall top layer, and the organic putty width around cable must not be less than 30mm, and in geometric figure, surface layer is smooth.(7) intermediate gap of bottom of trench, fire bulkhead should adopt organic putty to do stitch shutoff, and thickness is greater than the 10mm on fire-wall top layer, and width must not be less than 20mm, and in geometric figure, surface layer is smooth.(8) cable cover on fire-wall top should brush red visible marking.
The fireproof blocking at vertical shaft (l) cable shaft place generally adopts angle steel or channel-section steel bracket to reinforce, and guarantees that the specification of each small holes is less than 400mm × 400mm.Again with the fireproof plate backing shutoff that l0mm or 20mm is thick, with the density of bracket, bracket and selecting of fireproof plate must guarantee that entirety has enough intensity, can as walkway.(2) organic putty must be adopted to carry out closely knit shutoff around the hole mouth of bottom surface and cable, the organic putty thickness around cable must not be less than 20mm; 3) then at the inorganic putty of fireproof plate top pouring, its thickness is determined, generally at 150 ~ 200mm according to the product performance of inorganic putty.(4) inorganic putty uses organic putty to be wrapped up by every root cable separating at its top after building, and its thickness is greater than the l0mm on inorganic putty top layer, and the organic putty width around cable must not be less than 30mm, and in geometric figure, surface layer is smooth.
Dish cabinet (1) laying depth bottom hole is the fireproof plate of 10mm, and around hole mouth and cable, adopt organic putty to carry out closely knit shutoff, the organic putty thickness around cable must not be less than 20mm.(2) build with the filling of fire prevention bag or inorganic putty, fill up hole.(3) bottom hole, stitch is done at the gap place of fireproof plate and cable, and stitch thickness is not less than 10mm, and the width of the organic putty around cable is not less than 40mm.(4) coil bottom cabinet and carry out packing with 10mm fire bulkhead, dividing plate is installed firmly smooth, the technical gaps caused in installation, gap use organic putty to be embedded in densely in hole, and do stitch, stitch thickness is not less than l0mm, and width is not less than 20mm, and the width of the organic putty around cable is not less than 40mm, in geometric figure, surface layer is smooth.(5) fireproof plate can not gap bottom the dish cabinet that arrives of packing, and tightly seal reality with organic putty, organic putty face should exceed more than fire bulkhead 10mm, and in geometric figure, surface layer is smooth.(6) bottom reserved protection cabinet hole, laying depth is the fireproof plate of 10mm, carries out closely knit envelope wall at the organic putty of hole mouth, builds, fill up hole with the filling of fire prevention bag or inorganic putty.Steel plate or fireproof plate is adopted to reinforce again on the top of reserving hole, to guarantee the Security as walkway, if reserved excessive channel-section steel or the angle steel of should adopting of hole is reinforced, fireproof plate (specification of hole should be less than 400mm × 400mm) after being reduced by hole, can be installed additional.
Cable protection pipe, secondary terminal box (1) the cable mouth of pipe adopt the tight shutoff of organic putty; the degree of depth that the putty that caliber is less than 50mm embeds is not less than 50mm; expose mouth of pipe thickness to be not less than 10mm along with caliber and to increase; the degree of depth of putty embedding pipe and the thickness also corresponding increase of the mouth of pipe exposed, the putty of the mouth of pipe is in the arc-shaped.(2) secondary terminal box boxes out place's organic putty of employing by even for cable closely knit parcel, organic putty is used to be embedded in densely in hole at breach, gap place, and do stitch, stitch thickness is not less than 10mm, the width of the organic putty around cable is not less than 40mm, in geometric figure, surface layer is smooth.For the secondary terminal box that perforate is larger, also should install fireproof plate additional and carry out isolation shutoff, shutoff requires with bottom dish cabinet.
Terminal box (1) terminal box wire-feeding hold hole should adopt fire prevention bag to carry out shutoff, and should not be less than 250mm, organic putty must be adopted around cable to wrap up, and thickness must not be less than 20mm.(2) packing is carried out with l0mm fire bulkhead bottom terminal box, dividing plate is installed firmly smooth, the technical gaps caused in installation, gap use organic putty to be embedded in densely in hole, and do stitch, stitch thickness is not less than 10mm, and width is not less than 20mm, and the width of the organic putty around cable is not less than 40mm, in geometric figure, surface layer is smooth.(3) there is the terminal box raising seat, again should carry out shutoff on rising seat top.
Fire prevention band or coating fire prevention bag are placed fireproof paint (l) and are prevented fires the mounting point of band or coating generally at the long section of 2 ~ 3m of fire-wall two ends and power cable connector both sides.(2) cable surface dust, greasy dirt is removed before construction.Before brushing, stirred by coating, coating should not be too thick.(3) cable of horizontal laying is evenly brushed along cable louding, and the cable of vertical run should be brushed from top to bottom, the number of times of brushing, thickness and should meet the requirement of product interval time.1) cable is intensive by root brushing, should must not leak brush with when fettering, and brushing wants neat.2) construction of fire prevention band requires to construct in strict accordance with product descritption.The single wrapped mode of general employing; Control cables for many small bores can take many wrapped modes, and the gap of two sections is tight with organic putty shutoff.
Inspection of quality (1) comprises construction and establishes juice drawing, design alteration, construction and installation record, product descritption and the quality certification etc.(2) fire bulkhead is installed firmly, non-notch, gap flat appearance; Organic putty shutoff is tightly firm, and without light leak, leak out crack and omitted phenomenon, any surface finish is smooth; Inorganic putty shutoff any surface finish, without defects such as efflorescence, sclerosis, crackings; Back-fire relief bag is piled up and is adopted intersection to pile up mode, and firmly closely knit, light tight, and outward appearance is neat; Fireproof paint any surface finish, thickness are even.
Claims (1)
1. a method for Cable Fireproof Plugging, is characterized in that comprising the following steps:
(1) for flame retardant cable, at cable channel, a partition is set every 80 ~ 100m place; For non-flame resistant cable, a partition is set every 60m, cuts off both sides and adopt the fire bulkhead packing of more than 10mm thickness, the inorganic putty of middle employing, fire prevention bag or refractory brick to pile up;
(2) the organic putty being less than 20mm of must must not adopt around the cable in fire-wall wraps up;
(3) utilize organic putty to carry out closely knit separation parcel around the cable of fire-wall both sides, its thickness of two sides is greater than the 20mm on fire-wall top layer, and the organic putty width around cable must not be less than 30mm, and in geometric figure, surface layer is smooth;
(4) intermediate gap of bottom of trench, fire bulkhead should adopt organic putty to do stitch shutoff, and thickness is greater than the 10mm on fire-wall top layer, and width must not be less than 20mm, and in geometric figure, surface layer is smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310255772.5A CN104235512A (en) | 2013-06-24 | 2013-06-24 | Fireproof sealing method for cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310255772.5A CN104235512A (en) | 2013-06-24 | 2013-06-24 | Fireproof sealing method for cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104235512A true CN104235512A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310255772.5A Pending CN104235512A (en) | 2013-06-24 | 2013-06-24 | Fireproof sealing method for cables |
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| Country | Link |
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| CN (1) | CN104235512A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806661A (en) * | 2014-01-17 | 2014-05-21 | 国家电网公司 | Blockage construction method for wall cable |
| CN105470884A (en) * | 2015-03-17 | 2016-04-06 | 贵阳铝镁设计研究院有限公司 | Method for passing aluminum bus through firewall in aluminium electrolysis workshop and structure |
| CN107548274A (en) * | 2017-08-31 | 2018-01-05 | 中国冶集团有限公司 | One discharge plate cabinet incoming line screening arrangement and method |
| CN114552508A (en) * | 2022-03-03 | 2022-05-27 | 国网山东省电力公司临沂供电公司 | Omnibearing fire-proof explosion-proof device for tunnel dense cable |
| CN114734688A (en) * | 2021-11-08 | 2022-07-12 | 湖南省湘电锅炉压力容器检验中心有限公司 | Cable channel composite laminated plate fireproof partition and construction method thereof |
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| JP2011036290A (en) * | 2009-08-06 | 2011-02-24 | Sekisui Chem Co Ltd | Fireproof compartment penetrating part structure |
| CN202055384U (en) * | 2011-04-21 | 2011-11-30 | 贵阳铝镁设计研究院有限公司 | Blocking structure of cable reserved hole of floorslab |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806661A (en) * | 2014-01-17 | 2014-05-21 | 国家电网公司 | Blockage construction method for wall cable |
| CN103806661B (en) * | 2014-01-17 | 2016-06-08 | 国家电网公司 | A kind of body of wall cable plugging construction method |
| CN105470884A (en) * | 2015-03-17 | 2016-04-06 | 贵阳铝镁设计研究院有限公司 | Method for passing aluminum bus through firewall in aluminium electrolysis workshop and structure |
| CN105470884B (en) * | 2015-03-17 | 2017-11-03 | 贵阳铝镁设计研究院有限公司 | Aluminium electrolysis shop aluminium busbar passes through the method and structure of fire wall |
| CN107548274A (en) * | 2017-08-31 | 2018-01-05 | 中国冶集团有限公司 | One discharge plate cabinet incoming line screening arrangement and method |
| CN107548274B (en) * | 2017-08-31 | 2019-10-18 | 中国一冶集团有限公司 | One discharge plate cabinet incoming line screening arrangement and method |
| CN114734688A (en) * | 2021-11-08 | 2022-07-12 | 湖南省湘电锅炉压力容器检验中心有限公司 | Cable channel composite laminated plate fireproof partition and construction method thereof |
| CN114552508A (en) * | 2022-03-03 | 2022-05-27 | 国网山东省电力公司临沂供电公司 | Omnibearing fire-proof explosion-proof device for tunnel dense cable |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |