CN110354421A - A kind of power construction electric power flameproof protection device - Google Patents

A kind of power construction electric power flameproof protection device Download PDF

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Publication number
CN110354421A
CN110354421A CN201910678877.9A CN201910678877A CN110354421A CN 110354421 A CN110354421 A CN 110354421A CN 201910678877 A CN201910678877 A CN 201910678877A CN 110354421 A CN110354421 A CN 110354421A
Authority
CN
China
Prior art keywords
electric wire
frame
nested
flexible deformation
wire
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
Application number
CN201910678877.9A
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Chinese (zh)
Other versions
CN110354421B (en
Inventor
余仁山
余炜
任虹
徐渊
林志刚
汤文胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yingtan Power Supply Branch Jiangxi Electric Power Co Ltd
State Grid Corp of China SGCC
Original Assignee
Yingtan Power Supply Branch Jiangxi Electric Power Co Ltd
State Grid Corp of China SGCC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yingtan Power Supply Branch Jiangxi Electric Power Co Ltd, State Grid Corp of China SGCC filed Critical Yingtan Power Supply Branch Jiangxi Electric Power Co Ltd
Priority to CN201910678877.9A priority Critical patent/CN110354421B/en
Publication of CN110354421A publication Critical patent/CN110354421A/en
Application granted granted Critical
Publication of CN110354421B publication Critical patent/CN110354421B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C3/00Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02Details

Abstract

The invention discloses a kind of power construction electric power flameproof protection devices; gather portion, engagement frame and interior fire extinguishing bag including electric wire, flexible deformation; it is nested with flexible deformation on electric wire and gathers portion; two flexible deformation portions of gathering stick together relatively and opposite side center is along the opposite protrusion generation flexible deformation of electric wire; two flexible deformations, which are gathered, forms hollow cavity between portion opposite end; in order to which deformation is restored in the flexible deformation portion of gathering; it is nested with engagement frame on the edge that two flexible deformation portions of gathering stick together, two flexible deformation portions of gathering are tightened together.The present invention carries out fire prevention disposition to electric wire in the power construction stage, spy's one fire proof construction being nested on electric wire of setting, the wire outer skin of burning is separated to fall using the elastic deformation pre-set after the intensity of a fire reaches the structure, transfer route of the intensity of a fire on electric wire is blocked, by the control of fire on time-limited one section of electric wire.

Description

A kind of power construction electric power flameproof protection device
Technical field
The present invention relates to the technical field of electric power facility more particularly to a kind of power construction electric power flameproof protection devices.
Background technique
Power plant and substation wire are large number of, and control electric wire, power cord and communication wire are as fine as a spider's web, these electricity Line, which mostly uses, passes through electric wire tunnel, wireway or aerial cluster laying.In the useful space of electric wire sandwich chamber, electric wire density Higher, some electric wires are in adverse circumstances Chong Die or interlaced arrangement with high-temperature pipe, and electric wire is often due to insulation overheat, old Change, or by damage etc., easily breaks down.Electric wire fire its main feature is that or it is especially violent, and very along electric wire group Fast sprawling, in addition the natural air exhaust effect that the high drop of electric wire vertical shaft is formed, the intensity of a fire can spread to rapidly master control room, either for The personal safety of relevant staff or electric power supply stability, serious threat are all produced, for this purpose, by deeply grinding After studying carefully, intends taking pre- isolation intervening measure in the construction stage, protection disposition is carried out to electric wire, effectively improves entire electric structure Fire protecting performance.
Summary of the invention
For the above existing problem, the present invention provides a kind of power construction electric power flameproof protection device, in electric power Construction stage carries out fire prevention disposition, spy's one fire proof construction being nested on electric wire of setting, by the control of fire limited to electric wire On one section of long electric wire.
Technical program of the present invention lies in:
The present invention provides a kind of power construction electric power flameproof protection device, including electric wire, flexible deformation gather portion, bonding frame Frame and interior fire extinguishing bag are nested with flexible deformation on the electric wire and gather portion, and two flexible deformation portions of gathering are opposite to be sticked on Together and opposite side center is along the opposite protrusion generation flexible deformation of electric wire, and two flexible deformations are gathered between portion opposite end Hollow cavity is formed, in order to which deformation is restored in the flexible deformation portion of gathering;
It is nested with engagement frame on the edge that two flexible deformation portions of gathering stick together, by two elasticity The deformation portion of gathering tightens together.
Further, the flexible deformation portion of gathering is the elastomeric isolation patch of rectangular laminated structure, the elastomeric isolation The centre of patch is equipped with cross crotch, and the centre of the cross crotch is the through-hole across electric wire, the electric wire pass through from through-hole and incite somebody to action Direction elastic bumps of the center portion of elastomeric isolation patch with trend far from interior fire extinguishing bag.
Further, the elastomeric isolation patch is made of spring steel plate, two elastomeric isolation patches it is opposite Side is coated with heat insulating coat respectively, enables towards the intensity of a fire may occur the end face attacked heat-insulated.
Further, the electric wire includes wire outer skin and wire core, is nested with wire outer skin outside the wire core, described Wire core is equal with the clear size of opening of elastomeric isolation patch, in the case where wire outer skin generates burning, the elastomeric isolation patch Piece restores deformation and is engaged in wire core, and the wire outer skin burnt engaging is fallen, burning approach is cut off.
Further, the interior fire extinguishing bag being nested on electric wire is equipped in the cavity.
Further, the interior fire extinguishing bag includes sealing ring bag and extinguishing chemical, and the sealing ring bag is in hollow ring junction Structure and internal it is filled with extinguishing chemical.
Further, the engagement frame includes matrix set frame and insertion press box, and described matrix covers the square frame of frame The edge that structure and flexible deformation gather portion is embedded in matrix set frame, and the insertion press box own elasticity deformation gathers portion far from machine Body set frame side be embedded in and be fastened on matrix set frame in so that the edge that flexible deformation gathers portion be pressed on matrix set frame with It is embedded between press box.
Further, it is fixed with right angle triangle respectively at four angles of described matrix set frame and insertion press box, it is described Along electric wire extending direction through there is bolt on right angle triangle, the bolt passes through two right angle triangles and two right angles three Flexible deformation between gusset gathers portion, and matrix set frame and insertion press box are tightened together.
Further, four lateral end panel centers far from electric wire are successively solid according to clock-wise order on described matrix set frame Surely the first nested block, the second nested block, the first embedded block and the second embedded block, first nested block and the second nesting are provided with Block, which is respectively arranged with, is directed away from the insertion mouth that the direction of body set frame is opened, so that situation neighbouring above and below two matrix set frames Under, the first embedded block of the matrix set frame in top can be embedded in the insertion of the first nested block of the matrix set frame being below In mouthful, and in the case where two matrix set frame left and right horizontals are neighbouring, the second nested block of the matrix set frame in left side can be embedding It covers on the second embedded block of the matrix set frame in right side, completes the fastening of two premature set frames.
The present invention is allowed to specific positive beneficial effect compared with prior art due to using above-mentioned technology are as follows:
1, fire prevention disposition being carried out to electric wire in the power construction stage, a fire proof construction being nested on electric wire is arranged in spy, The wire outer skin of burning is separated to fall using the elastic deformation pre-set after the intensity of a fire reaches the structure, blocks the intensity of a fire in electricity Transfer route on line, by the control of fire on time-limited one section of electric wire.
2, for the difference of existing single core cable and multiple core cord, on the basis of being suitable for single structure, in order to adapt to Multicore structure is equipped with fire extinguishing bag in the ring-type being nested on electric wire in the cavity of two elastomeric isolation patches, reaches to the intensity of a fire After cavity, interior fire extinguishing bag breakage discharges extinguishing chemical, by intensity of a fire barrier in cavity.
3, in order to guarantee fire line that more electric wires extend in parallel, so that connection and barrier are capable of forming each other, in base Body set frame, which is equipped with, enables to adjacent two matrixes set frame to abut each other nested structure, so that more electric wires are strong System separates, to improve fire protecting performance of the more electric wires when extending in parallel.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the present invention implements one;
Fig. 2 is the main view that the present invention implements two;
Fig. 3 is the cross-sectional view in Fig. 2 at A-A;
Fig. 4 is the explosive view of structure shown in Fig. 2;
Fig. 5 is the structural schematic diagram of the embodiment of the present invention three.
In figure: the first nested block of 1-, 2- matrix cover frame, and 3- is embedded in press box, 4- elastomeric isolation patch, 5- bolt, 6- electric wire Crust, the second nested block of 7-, 8- cross crotch, the first embedded block of 9-, 10- wire core, the second embedded block of 11-, 12- sealing ring bag, 13- extinguishing chemical.
Specific embodiment
Embodiment one:
As shown in Fig. 1, the present invention provides a kind of power construction electric power flameproof protection device, including single core cable, elasticity Portion, engagement frame and interior fire extinguishing bag are gathered in deformation, are nested with flexible deformation on electric wire and gather portion, two flexible deformations gather portion's phase To sticking together and opposite side center along the opposite protrusion of electric wire generates flexible deformation, two flexible deformations gather portion opposite end Between form hollow cavity, in order to the flexible deformation portion of gathering restore deformation;
It is nested with engagement frame on the edge that two flexible deformation portions of gathering stick together, two flexible deformations are gathered Portion tightens together.
Wherein, the flexible deformation portion of gathering is the elastomeric isolation patch 4 of rectangular laminated structure, the centre of elastomeric isolation patch 4 Equipped with cross crotch 8, the centre of cross crotch 8 is the through-hole across electric wire, and electric wire passes through from through-hole and will be in elastomeric isolation patch 4 Direction elastic bumps of the centre part with trend far from interior fire extinguishing bag, so that elastomeric isolation patch 4 makes elastic deformation in advance, to electricity After line crust 6 burns,.
Specifically, elastomeric isolation patch 4 is made of spring steel plate, the opposite side difference of two elastomeric isolation patches 4 It is coated with heat insulating coat, enables towards the intensity of a fire may occur the end face attacked heat-insulated.
Single core cable includes wire outer skin 6 and wire core 10, is nested with wire outer skin 6 outside wire core 10, wire core 10 with The clear size of opening of elastomeric isolation patch 4 is equal, and in the case where wire outer skin 6 generates burning, elastomeric isolation patch 4 restores deformation And be engaged in wire core 10, the wire outer skin 6 burnt engaging is fallen, burning approach is cut off.
Wherein, engagement frame includes matrix set frame 2 and insertion press box 3, and matrix covers the square frame structure of frame 2 and elasticity The edge that portion is gathered in deformation is embedded in matrix set frame 2, and side of the portion far from body set frame is gathered in insertion 3 own elasticity of press box deformation It is embedded in and is fastened in matrix set frame 2, so that the edge that flexible deformation gathers portion is pressed on matrix set frame 2 and insertion press box 3 Between.
Matrix set frame 2 and be embedded at four angles of press box 3 and be fixed with right angle triangle respectively, on right angle triangle along Electric wire extending direction, which runs through, bolt 5, flexible deformation of the bolt 5 across two right angle triangles and two right angle triangles Gather portion, matrix set frame 2 and insertion press box 3 are tightened together.
When in use, when power construction electric wire is laid with, in order to improve the fire protecting performance of electric wire, first nested one on electric wire A elastomeric isolation patch 4, due to cross crotch 8 and through-hole diameter are less than the diameter of wire, so that this elastomeric isolation patch 4 Side center projections, far from another nested elastomeric isolation patch of side of 4 protrusion of this elastomeric isolation patch on electric wire 4, so that two 4 opposite sides of elastomeric isolation patch are mutually raised, the elastic shape of a permission is formed between two elastomeric isolation patches 4 Become the cavity restored, matrix set frame 2 and insertion press box 3 are relatively nested in the edge of two elastomeric isolation patches 4 again after allowing Two elastomeric isolation patches 4 are covered frame 2 and insertion press box 3 with matrix and are tightened together by bolt 5, form a hanging sleeve by place Fire proof construction on electric wire.
Embodiment two:
Since multiple core cord is there are multiple cores, there is combustible crust on each core, in order to adapt to the anti-of multiple core cord Single core cable as shown in attached drawing 2- attached drawing 4, is replaced with multiple core cord, set in cavity by fire on the basis of example 1 There is the interior fire extinguishing bag being nested on electric wire, interior fire extinguishing bag includes sealing ring bag 12 and fire-fighting powder, and sealing ring bag 12 is in hollow Ring structure and it is internal be filled with extinguishing chemical 13, the crust to multiple core cord is burned to elastomeric isolation patch 4, until the intensity of a fire reaches When between two elastomeric isolation patches 4, sealing ring bag 12 made of thin plastic is burned off, and fire-fighting powder, which falls to spread out, to be come, and is made The intensity of a fire is obtained to be blocked between two elastomeric isolation patches 4.
Embodiment three:
In order to guarantee that the fire line that more electric wires extend in parallel is being implemented so that being capable of forming connection and barrier each other Example one or two it is technical, four lateral end panel centers far from electric wire are successively solid according to clock-wise order on matrix set frame 2 Surely it is provided with the first nested block 1, the second nested block 7, the first embedded block 9 and the second embedded block 11, the first nested block 1 and second is embedding Set block 7, which is respectively arranged with, is directed away from the insertion mouth that the direction of body set frame is opened, so that two matrix about 2 frames of set are neighbouring In the case of, the first embedded block 9 of the matrix set frame 2 in top can be embedded in the first nesting of the matrix set frame 2 being below In the insertion mouth of block 1, and in the case where two matrix set 2 left and right horizontals of frame are neighbouring, second of the matrix set frame 2 in left side Nested block 7 can be nested on the second embedded block 11 of the set frame 2 of the matrix in right side, complete the tight of two premature set frames 2 Gu burning on one section of limited electric wire to form arrangement mode as shown in Fig. 5 so that the intensity of a fire can only be done.
When in use, it so that being forced to separate between adjacent electric wire, and can prevent fires each electric wire Barrier, such as the preparatory flame height measured when the good type electric wire burns, the size that matrix set frame 2 is then arranged are greater than the fire Twice or more of flame height, so that the intensity of a fire is difficult to transmit between adjacent two electric wires.

Claims (9)

1. a kind of power construction electric power flameproof protection device, it is characterised in that: gather portion, bonding frame including electric wire, flexible deformation Frame and interior fire extinguishing bag are nested with flexible deformation on the electric wire and gather portion, and two flexible deformation portions of gathering are opposite to be sticked on Together and opposite side center is along the opposite protrusion generation flexible deformation of electric wire, and two flexible deformations are gathered between portion opposite end Hollow cavity is formed, in order to which deformation is restored in the flexible deformation portion of gathering;
It is nested with engagement frame on the edge that two flexible deformation portions of gathering stick together, by two flexible deformations The portion of gathering tightens together.
2. a kind of power construction electric power flameproof protection device according to claim 1, it is characterised in that: the flexible deformation Gather the elastomeric isolation patch that portion is rectangular laminated structure, the centre of the elastomeric isolation patch is equipped with cross crotch, the cross The centre of seam be across electric wire through-hole, the electric wire passed through from through-hole and by the center portion of elastomeric isolation patch band trend it is remote Direction elastic bumps from interior fire extinguishing bag.
3. a kind of power construction electric power flameproof protection device according to claim 2, it is characterised in that: the elastomeric isolation Patch is made of spring steel plate, and the opposite side of two elastomeric isolation patches is coated with heat insulating coat respectively, so that court It the end face attacked to the intensity of a fire may occur can be heat-insulated.
4. a kind of power construction electric power flameproof protection device according to claim 3, it is characterised in that: the electric wire includes Wire outer skin and wire core, the wire core are nested with wire outer skin, the through-hole ruler of the wire core and elastomeric isolation patch outside Very little equal, in the case where wire outer skin generates burning, the elastomeric isolation patch restores deformation and is engaged in wire core, will The wire outer skin engaging burnt is fallen, and burning approach is cut off.
5. a kind of power construction electric power flameproof protection device according to claim 4, it is characterised in that: set in the cavity There is the interior fire extinguishing bag being nested on electric wire.
6. a kind of power construction electric power flameproof protection device according to claim 5, it is characterised in that: the interior fire extinguishing bag Including sealing ring bag and extinguishing chemical, the sealing ring bag is filled with extinguishing chemical in hollow ring structure and inside.
7. a kind of power construction electric power flameproof protection device according to claim 6, it is characterised in that: the engagement frame Gather the edge insertion in portion with press box, the square frame structure of described matrix set frame and flexible deformation is embedded in including matrix set frame In matrix set frame, the insertion press box own elasticity deformation gathers portion and is embedded in far from the side of body set frame and is fastened on matrix set In frame, so that the edge that flexible deformation gathers portion is pressed between matrix set frame and insertion press box.
8. a kind of power construction electric power flameproof protection device according to claim 7, it is characterised in that: described matrix covers frame It is fixed with right angle triangle respectively at four angles of insertion press box, is passed through on the right angle triangle along electric wire extending direction It is installed with bolt, flexible deformation of the bolt across two right angle triangles and two right angle triangles gathers portion, by base Body set frame and insertion press box tighten together.
9. a kind of power construction electric power flameproof protection device described in any one of -8 according to claim 1, it is characterised in that: Four lateral end panel centers far from electric wire are successively fixedly installed the first nesting according to clock-wise order on described matrix set frame Block, the second nested block, the first embedded block and the second embedded block, first nested block and the second nested block are respectively arranged with direction The insertion mouth that direction far from body set frame is opened, so that in the case where neighbouring above and below two matrix set frames, the base in top First embedded block of body set frame can be embedded in the insertion mouth of the first nested block of the matrix set frame being below, and in two bases Body covers frame left and right horizontal in the case where, and the second nested block of the matrix set frame in left side can be nested in the base in right side Body covers on the second embedded block of frame, completes the fastening of two premature set frames.
CN201910678877.9A 2019-07-25 2019-07-25 Electric power construction electric power fire protection device Expired - Fee Related CN110354421B (en)

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Application Number Priority Date Filing Date Title
CN201910678877.9A CN110354421B (en) 2019-07-25 2019-07-25 Electric power construction electric power fire protection device

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CN110354421B CN110354421B (en) 2020-10-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111228679A (en) * 2020-01-14 2020-06-05 李兆纯 Automatic isolating device of dark line fire prevention
CN115970195A (en) * 2022-12-01 2023-04-18 国网安徽省电力有限公司明光市供电公司 Multifunctional fireproof protection device for electric power construction

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100862910B1 (en) * 2007-12-20 2008-10-13 주식회사 지에이엔지니어링건축사사무소 Fire extinguishing construction of underground wiring for building
US20140020915A1 (en) * 2009-10-22 2014-01-23 Specified Technologies Inc. Self-adjusting firestopping sleeve apparatus with flexibly resillient supplemental constriction means
CN205411977U (en) * 2016-03-10 2016-08-03 赵宏伟 Electric power cable is with novel fire prevention fire control unit
CN106362331A (en) * 2016-12-07 2017-02-01 国家电网公司 Cable fire extinguishing sheath
CN106761922A (en) * 2016-12-05 2017-05-31 国网青海省电力公司西宁供电公司 A kind of avoid-dismantle cable tunnel fireproof partition device
CN107633916A (en) * 2017-09-26 2018-01-26 浙江德通科技有限公司 A kind of double-deck high shielding boundling coaxial cable
CN207199353U (en) * 2017-09-12 2018-04-06 光宁电缆有限公司 A kind of isolated form fireproof cable
CN208862548U (en) * 2018-11-21 2019-05-14 长缆电工科技股份有限公司 A kind of cable intermediate joint fireproof anti-explosion device
CN110047620A (en) * 2019-05-22 2019-07-23 卢文杰 Composite fireproof cable

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100862910B1 (en) * 2007-12-20 2008-10-13 주식회사 지에이엔지니어링건축사사무소 Fire extinguishing construction of underground wiring for building
US20140020915A1 (en) * 2009-10-22 2014-01-23 Specified Technologies Inc. Self-adjusting firestopping sleeve apparatus with flexibly resillient supplemental constriction means
CN205411977U (en) * 2016-03-10 2016-08-03 赵宏伟 Electric power cable is with novel fire prevention fire control unit
CN106761922A (en) * 2016-12-05 2017-05-31 国网青海省电力公司西宁供电公司 A kind of avoid-dismantle cable tunnel fireproof partition device
CN106362331A (en) * 2016-12-07 2017-02-01 国家电网公司 Cable fire extinguishing sheath
CN207199353U (en) * 2017-09-12 2018-04-06 光宁电缆有限公司 A kind of isolated form fireproof cable
CN107633916A (en) * 2017-09-26 2018-01-26 浙江德通科技有限公司 A kind of double-deck high shielding boundling coaxial cable
CN208862548U (en) * 2018-11-21 2019-05-14 长缆电工科技股份有限公司 A kind of cable intermediate joint fireproof anti-explosion device
CN110047620A (en) * 2019-05-22 2019-07-23 卢文杰 Composite fireproof cable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111228679A (en) * 2020-01-14 2020-06-05 李兆纯 Automatic isolating device of dark line fire prevention
CN111228679B (en) * 2020-01-14 2021-12-07 福建鑫汉唐照明科技有限公司宁化分公司 Automatic isolating device of dark line fire prevention
CN115970195A (en) * 2022-12-01 2023-04-18 国网安徽省电力有限公司明光市供电公司 Multifunctional fireproof protection device for electric power construction

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