CN110354421A - A kind of power construction electric power flameproof protection device - Google Patents
A kind of power construction electric power flameproof protection device Download PDFInfo
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- 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
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
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.
Priority Applications (1)
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 |
Applications Claiming Priority (1)
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN110354421A true CN110354421A (en) | 2019-10-22 |
CN110354421B CN110354421B (en) | 2020-10-16 |
Family
ID=68222439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910678877.9A Expired - Fee Related CN110354421B (en) | 2019-07-25 | 2019-07-25 | Electric power construction electric power fire protection device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110354421B (en) |
Cited By (2)
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)
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 |
-
2019
- 2019-07-25 CN CN201910678877.9A patent/CN110354421B/en not_active Expired - Fee Related
Patent Citations (9)
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)
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 |
Also Published As
Publication number | Publication date |
---|---|
CN110354421B (en) | 2020-10-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110354421A (en) | A kind of power construction electric power flameproof protection device | |
CN208027792U (en) | A kind of Anti-pressure fireproof cable | |
CN104952539A (en) | Environment-friendly cable with high compressive strength | |
CN202025562U (en) | Inflaming retarding and fire-resistant cable without armoring | |
CN209168801U (en) | A kind of mining fireproof cable | |
CN207039122U (en) | A kind of MPP power cable protecting pipes | |
CN109036675A (en) | A kind of high-intensitive low halogen cigarette power cable of insulation high-temperature-resistant | |
CN205845547U (en) | A kind of heat radiation Anti-pressure single aluminium alloy power cable | |
CN206164040U (en) | Bus duct with fire -proofing | |
CN204695853U (en) | The cable that a kind of environmental protection compression strength is high | |
CN207021612U (en) | A kind of building cable flameproof protection structure | |
CN212304560U (en) | Cable protection pipe convenient to multiunit centre gripping | |
CN209232469U (en) | A kind of environment friendly intelligent building wire cable | |
CN107579487A (en) | A kind of anticorrosive heat resistant type MPP power pipes | |
CN209526451U (en) | MPP cable protection pipe | |
CN209747221U (en) | Shielding type framework photoelectric hybrid optical cable | |
CN107800082A (en) | The antiwear portal structure of one kind fire prevention | |
CN208722631U (en) | A kind of resistance to compression flame retardant cable | |
CN207237111U (en) | A kind of cable explosion-proof extinguishing device | |
CN219329134U (en) | Fireproof structure for electric wire and cable | |
CN213635484U (en) | Based on fire-retardant lightning protection cable of low smoke and zero halogen | |
CN210806402U (en) | High tension switchgear inlet wire protection equipment | |
CN210403316U (en) | Fire-resistant high temperature resistant type aluminium core power cable | |
CN214897710U (en) | Novel underground cable | |
CN209526494U (en) | A kind of protector for high-tension cable middle joint for power supply network |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201016 Termination date: 20210725 |