CN106129952A - A kind of high-voltage cable joint flameproof protection method - Google Patents
A kind of high-voltage cable joint flameproof protection method Download PDFInfo
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- CN106129952A CN106129952A CN201610687109.6A CN201610687109A CN106129952A CN 106129952 A CN106129952 A CN 106129952A CN 201610687109 A CN201610687109 A CN 201610687109A CN 106129952 A CN106129952 A CN 106129952A
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- drive mechanism
- box
- fire
- cable
- voltage cable
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Classifications
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- 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
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a kind of high-voltage cable joint flameproof protection method; comprise the steps of the humiture in explosion-proof temperature-moisture sensor detection fireproof protection box; air pressure in explosion-proof pressure sensor detection fireproof protection box, and according to the humiture in fireproof protection box, the unit interval temperature difference and difference variation, atmospheric pressure value generation control signal；First drive mechanism and the second drive mechanism drive the first rotation BAIYE and second to rotate BAIYE according to control signal respectively and are turned to the second state by the first state, or turned to the first state by the second state, the first described state is closed mode, and the second described state is opening.The present invention can be applicable to wet environment, meet cable connector cooling requirements, and release energy when cable connector generation explosion accident, meet road power cable breaking out of fire or an explosion time simultaneously, do not prolong and fire the use requirement to other cables laid with tunnel.
Description
Technical field
The present invention relates to cable connector flameproof protection technical field, be specifically related to a kind of high-voltage cable joint flameproof protection side
Method, it is adaptable to the flameproof protection in the intensive places of high voltage power cable such as cable tunnel, cable duct, cable interlayer.
Background technology
Cable fire is multiple to be born at cable connector.Cable intermediate joint is ring the weakest in safe operation of power system
Joint, the most thermally-induced electric discontinuity of cable of cable connector, short circuit, blast even cause the case of major accident of common occurrence.Certain cable
In in tunnel, 110kV cable connector is arranged on closed protecting box, protecting box is internal fills fire prevention calking, and cable connector dispels the heat not
Profit, when joint explosion accident occurs, energy discharges nowhere, and connector box moment pops, and initiation fire also fires and adjacent cable, causes
The supply network large area paralysis in city.
Many area Utilities Electric Co.s power cable to laying in electric power tunnel proposes new fire protection requirement: a road cable occurs
Problem can not prolong combustion, it is impossible to affects other with tunnel cabling.
Being in the cable tunnel of underground, cable duct and often ventilate unfavorable, environment is the moistest, for preventing cable connector to be subject to
Tide, often uses airtight protecting box to protect.For the electric power electricity of cable tunnel different layers installation with hanger in some engineer applied
Cable, arranges PLASTIC LAMINATED in the place having cable connector, by joint and upper and lower cable zone isolation.But airtight protecting box and envelope
The PLASTIC LAMINATED closed all is unfavorable for that cable connector dispels the heat, and is easily generated heat and assembles, is unfavorable for the operation safety of cable.
Summary of the invention
It is an object of the invention to provide a kind of high-voltage cable joint flameproof protection method, it is possible to be applicable to wet environment,
Meet cable connector cooling requirements, and release energy when cable connector generation explosion accident, meet again a road electric power simultaneously
Cable breaking out of fire or explosion time, do not prolong and fire the use requirement to other cables laid with tunnel.
In order to achieve the above object, the present invention is achieved through the following technical solutions: a kind of high-voltage cable joint flameproof protection
Method, for a high-voltage cable joint fireproof protection box, is characterized in, described high-voltage cable joint fireproof protection box comprises
Half box and lower half box, described upper half box and lower half box are mutually spliced to form the space of a receiving high-voltage cable joint, described height
The two ends of voltage cable joint connect power cable respectively, and the two ends of fireproof protection box are provided with and coordinate described power cable to pass
Cable aperture；Described upper half box comprises one first framework and the first rotation BAIYE being arranged on described first framework, first drives
Motivation structure, the first described drive mechanism is connected to described first by one first power transmission shaft and rotates BAIYE；Described lower half box
Comprising one second framework and the second rotation BAIYE, the second drive mechanism being arranged on described second framework, described second drives
Motivation structure is connected to described second by a second driving shaft and rotates BAIYE；One explosion-proof temperature-moisture sensor, is arranged on described
On upper half box, described explosion-proof temperature-moisture sensor communicates to connect with described first drive mechanism and the second drive mechanism respectively,
One explosion-proof pressure sensor, is arranged on described upper half box and lower half box is mutually spliced to form the sky of a receiving high-voltage cable joint
In, described explosion-proof pressure sensor communicates to connect with described first drive mechanism and the second drive mechanism respectively, this high pressure
Cable connector flameproof protection method comprises the steps of
Humiture in explosion-proof temperature-moisture sensor detection fireproof protection box, explosion-proof pressure sensor detection fireproof protection box
Interior air pressure, and according to the humiture in fireproof protection box, the unit interval temperature difference and difference variation, atmospheric pressure value generation control letter
Number；
First drive mechanism and the second drive mechanism drive the first rotation BAIYE and second to rotate according to control signal respectively
BAIYE is turned to the second state by the first state, or is turned to the first state by the second state, and the first described state is for closing
Closed state, the second described state is opening.
Described cable aperture is by the upper cable aperture pillow being correspondingly arranged on described upper half box and lower half box and lower cable aperture pillow
Composition.
Gap between described cable aperture and power cable is filled with fire resistant flexible material.
Described upper half box and lower half box all have fire proofing material to make.
The bottom of described lower half box is provided with a pull-out type supporting plate, described pull-out type supporting plate is placed with and does not fires dehumidifying material
Material.
Fixed structure it is correspondingly arranged on respectively on described upper half box and lower half box.
Described fixed structure is included in the first connecting plate that described upper half cassette bottom portion extends to dual-side and under described
The second connecting plate that half box top extends to both sides, the first described connecting plate is corresponding with on the second connecting plate offers installation
Hole.
The first described drive mechanism and the second drive mechanism monitor system and cable with outside cable fire the most respectively
Joint monitoring system communication connection, receives cable fire monitoring system and the control signal of cable connector monitoring system；If cable
Fire hazard monitoring system or cable connector monitoring system monitoring are to when fireproof protection box is interior or adjacent cable has fire to occur, then to the
One drive mechanism and the second drive mechanism send control instruction, close the first rotation BAIYE and second and rotate BAIYE；Fire alarm
During signal relief, then send control instruction to the first drive mechanism and the second drive mechanism, open the first rotation BAIYE and second
Rotate BAIYE.
The first described drive mechanism and the second drive mechanism communicate to connect with automatic fire alarm system the most respectively, Xiang Qi
Output linking fire control signal.
Described explosion-proof temperature-moisture sensor and the communication connection of outside environmental monitoring system, if explosion-proof temperature-moisture sensor
Detect that the humidity of fireproof protection box higher than when presetting humidity, then sends prompting changing to environmental monitoring system and do not fires dehumidifying material
Signal.
One high-voltage cable joint flameproof protection method of the present invention compared with prior art has the advantage that by monitoring
The humiture unit interval temperature difference in fireproof protection box and difference variation, atmospheric pressure value, generate control instruction, fireproof protection box endogenous cause of ill
High-voltage cable joint is overheated when causing temperature too high rotates BAIYE and dispels the heat, in order to avoid heat is assembled in fireproof protection box by opening
Cause blast or fire；When high-voltage cable joint breaking out of fire, close and rotate BAIYE, form a closing space, stop the tongues of fire
Scurry out, carry out fire damping, prevent fire from prolonging and fire to adjacent cable, meet road power cable breaking out of fire or an explosion time, no
Prolong and fire the use requirement to other cables laid with tunnel；At high-voltage cable joint generation explosion time, open and rotate BAIYE, carry
Release energy for rushing down pressure passageway, close BAIYE in time after pressure release in order to avoid after Bao Zha during breaking out of fire, tongues of fire string goes out to prolong combustion to surrounding
Cable.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of a kind of high-voltage cable joint fireproof protection box；
Fig. 2 is the overall structure schematic diagram of upper half box；
Fig. 3 is the overall structure schematic diagram of lower half box；
Fig. 4 be lower half box top view；
Fig. 5 be lower half box side view.
Detailed description of the invention
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
A kind of high-voltage cable joint flameproof protection method, for a high-voltage cable joint fireproof protection box 10, such as Fig. 1, and
Shown in Fig. 2～Fig. 5, described high-voltage cable joint fireproof protection box 10 comprises: upper half box 100 and lower half box 200, upper half
The structure of box 100 and lower half box 200 is essentially identical, and it is high that described upper half box 100 and lower half box 200 are mutually spliced to form a receiving
The space of voltage cable joint 300, uses the mode being readily disassembled connection to assemble, it is simple to the installation of high-voltage cable joint 300 and dimension
Protecting, the two ends of described high-voltage cable joint 300 connect power cable 400 respectively, and the two ends of fireproof protection box 10 are provided with cooperation
The cable aperture that described power cable 400 passes；Described upper half box 100 comprises one first framework 101 and is arranged on described first
First rotation BAIYE the 102, first drive mechanism 103 on framework 101, the first described drive mechanism 103 is by one first biography
Moving axis 104 is connected to described first and rotates BAIYE 102；Described lower half box 200 comprises one second framework 201 and is arranged on described
Second rotation BAIYE the 202, second drive mechanism 203 on second framework 201, described second drive mechanism 203 is by one the
Two power transmission shafts 204 are connected to described second and rotate BAIYE 202；One Temperature Humidity Sensor 106, is arranged on described upper half box 100
On, described Temperature Humidity Sensor 106 communicates to connect with described first drive mechanism 103 and the second drive mechanism 203 respectively；One
Explosion-proof pressure sensor, is arranged on described upper half box 100 and lower half box 200 is mutually spliced to form a receiving high-voltage cable joint
In the space of 300, described explosion-proof pressure sensor leads to described first drive mechanism 103 and the second drive mechanism 203 respectively
Letter connects,.
In the present embodiment, it is preferred that the first rotation BAIYE 102 and the second rotation BAIYE 202 are normally off, according to anti-
Humiture in fire protecting box 10, cable connector fire, the different conditions requirement such as blast, respectively the with drive mechanism 103 He
It is turned on and off under the control of the second drive mechanism 203；Explosion-proof temperature-moisture sensor 106 is arranged on the first frame of upper half box 100
The middle part at the top of frame 101.Explosion-proof pressure sensor is arranged in a certain drift angle of the first framework 101 of upper half box 100,
In any one in four drift angles as shown in Figure 2, or the position that during other elongnated building, gas shock impact is less.
In a preferred embodiment of the invention, it is considered to engineering actual medium and high voltage cable joint all has insulating barrier and sheath, high pressure
The process or this process that raise rapidly in before cable connector blast, in fireproof protection box, temperature may not have the short time are held
The continuous time is too short, causes first, second drive mechanism to have little time action, in such cases explosion-proof temperature-moisture sensor and high-tension electricity
Cable joint contact is arranged, such as, be arranged on the top of high-voltage cable joint.
In other embodiments of the invention, can be when high-voltage cable joint processing and fabricating, exhausted at high-voltage cable joint
In edge layer or it is close to core between insulating barrier and oversheath and anti-explosion temperature sensor is set, if cable connector monitoring system has been arranged also
Collecting temperature signal, then can arrange anti-explosion temperature sensor, and the temperature signal that cable connector is directly monitored system passes
Transport to first, second drive mechanism.
In the present embodiment, as shown in Figures 2 and 3, it is preferred that described cable aperture is by being correspondingly arranged at described upper half box
100 and lower half box 200 on upper cable aperture pillow 105 and lower cable aperture pillow 205 composition.
In the present embodiment, as it is shown in figure 1, it is preferred that the gap between described cable aperture and power cable 400 is filled
There is fire resistant flexible material 500；Preferably, described upper half box 100 and lower half box 200 all have fire proofing material to make, fire proofing material
And specification need to be adapted to the fire endurance of field of employment.
In the present embodiment, as depicted in figs. 3 and 5, it is preferred that the bottom of described lower half box 200 is provided with a pull-out type
Supporting plate 206, described pull-out type supporting plate 206 is placed with and does not fires dehumidifying material 600.
In the present embodiment, as shown in Figures 2 and 3, it is preferred that the most right on described upper half box 100 and lower half box 200
Fixed structure should be provided with；Preferably, described fixed structure is included in the extended bottom described upper half box 100 to dual-side
A plate 107 and the second connecting plate 207 extended to both sides at described lower half box 200 top, the first described connecting plate 107
Corresponding with on the second connecting plate 207 offer installing hole (1071,2071).
In the present embodiment, it is preferred that the first described drive mechanism 103 and the second drive mechanism 203 are the most respectively with outward
The cable fire monitoring system in portion and cable connector monitoring system communication connection, receive cable fire monitoring system and cable connector
The control signal of monitoring system；Preferably, described explosion-proof temperature-moisture sensor 106 and outside environmental monitoring system communication link
Connect, transmit its moisture signal；The first described drive mechanism 103 and the second drive mechanism 203 the most respectively with automatic fire alarm
System communicates to connect, and exports linking fire control signal to it..
High-voltage cable joint flameproof protection method comprises the steps of
Humiture in explosion-proof temperature-moisture sensor detection fireproof protection box, explosion-proof pressure sensor detection fireproof protection box
Interior air pressure, and according to the humiture in fireproof protection box, the unit interval temperature difference and difference variation, atmospheric pressure value generation control letter
Number；
First drive mechanism and the second drive mechanism drive the first rotation BAIYE and second to rotate according to control signal respectively
BAIYE is turned to the second state by the first state, or is turned to the first state by the second state, and the first described state is for closing
Closed state, the second described state is opening.
Specifically, in the present embodiment, first, second rotation BAIYE is in normally off, when monitoring fireproof protection box
When interior temperature exceeds the first setting threshold value, it is judged that for temperature overheating in fireproof protection box, then first, second drive mechanism is respectively
First, second rotation BAIYE is driven to open.When the temperature monitored in fireproof protection box exceeds the second setting threshold value, and unit
Time difference variation the most persistently rises, it is judged that for breaking out of fire in fireproof protection box, and to automatic fire alarm
System sends signal, to judge whether to enable automatic fire extinguisher, if now first, second rotation BAIYE is in the open position,
Then first, second drive mechanism drives first, second rotation BAIYE to close respectively；If now first, second rotation BAIYE is in
Closed position, then first, second drive mechanism is failure to actuate.When monitoring detects that the temperature in fireproof protection box exceeds the 3rd setting
During threshold value, and unit interval difference variation rose rapidly within the of short duration time, it is judged that for having in fireproof protection box, blast occurs
Danger, if now first, second rotation BAIYE is in the open position, then first, second drive mechanism is failure to actuate；If now
One, the second rotation BAIYE is in the closed position, then first, second drive mechanism drives first, second rotation BAIYE to open respectively,
Release energy, after pressure declines in explosion-proof pressure sensor detects fireproof protection box, then send out to first, second drive mechanism
Go out control signal, to close first, second rotation BAIYE.
It addition, when the humidity of fireproof protection box is higher than when presetting humidity, then send prompting changing not to environmental monitoring system
The signal of combustion dehumidifying material；When cable fire monitoring system and cable connector monitoring system monitoring have fire in fireproof protection box
During generation, then send control instruction to drive mechanism, close and rotate BAIYE, make fireproof protection box form a closing space, stop
The tongues of fire are scurried out, and carry out fire damping, prevent fire from prolonging and fire to adjacent cable, meet road power cable breaking out of fire or a blast
Time, do not prolong and fire the use requirement to other cables laid with tunnel；When cable fire monitoring system and cable connector monitoring are
System monitors adjacent cable when having fire to occur, then send control instruction to drive mechanism, close rotation BAIYE, make flameproof protection
Box-like becomes a closing space, prevents fire from prolonging combustion to this fireproof protection box；When fire alarm signal releases, cable fire can be passed through
Monitoring system or cable connector monitoring system monitoring, then send control instruction to drive mechanism, open and rotate BAIYE.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read foregoing, for the present invention's
Multiple amendment and replacement all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a high-voltage cable joint flameproof protection method, for a high-voltage cable joint fireproof protection box, it is characterised in that institute
The high-voltage cable joint fireproof protection box stated comprises upper half box and lower half box, and described upper half box and lower half box are mutually spliced to form
One space accommodating high-voltage cable joint, the two ends of described high-voltage cable joint connect power cable respectively, fireproof protection box
Two ends are provided with the cable aperture coordinating described power cable to pass；Described upper half box comprises one first framework and is arranged on described
The first rotation BAIYE, the first drive mechanism on first framework, the first described drive mechanism is connected by one first power transmission shaft
BAIYE is rotated to described first；Described lower half box comprises one second framework and the second rotation being arranged on described second framework
BAIYE, the second drive mechanism, the second described drive mechanism is connected to described second by a second driving shaft and rotates BAIYE；One
Explosion-proof temperature-moisture sensor, is arranged on described upper half box, and described explosion-proof temperature-moisture sensor drives with described first respectively
Motivation structure and the communication connection of the second drive mechanism, an explosion-proof pressure sensor, is arranged on described upper half box and lower half box is mutual
Be spliced to form in the space of a receiving high-voltage cable joint, described explosion-proof pressure sensor respectively with described first drive mechanism
And second drive mechanism communication connection, this high-voltage cable joint flameproof protection method comprises the steps of
Humiture in explosion-proof temperature-moisture sensor detection fireproof protection box, in explosion-proof pressure sensor detection fireproof protection box
Air pressure, and according to the humiture in fireproof protection box, the unit interval temperature difference and difference variation, atmospheric pressure value generation control signal；
First drive mechanism and the second drive mechanism drive the first rotation BAIYE and second to rotate BAIYE according to control signal respectively
Being turned to the second state by the first state, or turned to the first state by the second state, the first described state is for closing shape
State, the second described state is opening.
2. high-voltage cable joint flameproof protection method as claimed in claim 1, it is characterised in that described cable aperture is by correspondence
The upper cable aperture pillow being arranged on described upper half box and lower half box and lower cable aperture pillow composition.
3. high-voltage cable joint fireproof protection box as claimed in claim 1 or 2, it is characterised in that described cable aperture and electricity
Gap between power cable is filled with fire resistant flexible material.
4. high-voltage cable joint flameproof protection method as claimed in claim 1, it is characterised in that described upper half box and lower half
Box all has fire proofing material to make.
5. high-voltage cable joint flameproof protection method as claimed in claim 1, it is characterised in that the bottom of described lower half box
It is provided with a pull-out type supporting plate, described pull-out type supporting plate is placed with and does not fires dehumidifying material.
6. high-voltage cable joint flameproof protection method as claimed in claim 1, it is characterised in that described upper half box and lower half
Fixed structure it is correspondingly arranged on respectively on box.
7. high-voltage cable joint flameproof protection method as claimed in claim 6, it is characterised in that described fixed structure comprises
The first connecting plate extended to dual-side in described upper half cassette bottom portion and extend to both sides at described lower half box top second is even
Fishplate bar, the first described connecting plate is corresponding with on the second connecting plate offers installing hole.
8. high-voltage cable joint flameproof protection method as claimed in claim 1, it is characterised in that the first described drive mechanism
Communicate to connect with outside cable fire monitoring system and cable connector monitoring system the most respectively with the second drive mechanism, receive electricity
Cable fire hazard monitoring system and the control signal of cable connector monitoring system；If cable fire monitoring system or cable connector monitoring are
In system monitors fireproof protection box or when adjacent cable has fire to occur, then send to the first drive mechanism and the second drive mechanism
Control instruction, closes the first rotation BAIYE and second and rotates BAIYE；When fire alarm signal releases, then to the first drive mechanism and
Second drive mechanism sends control instruction, opens the first rotation BAIYE and second and rotates BAIYE.
9. high-voltage cable joint flameproof protection method as claimed in claim 1, it is characterised in that the first described drive mechanism
Communicate to connect with automatic fire alarm system the most respectively with the second drive mechanism, export linking fire control signal to it.
10. high-voltage cable joint flameproof protection method as claimed in claim 1, it is characterised in that described explosion-proof humiture
Sensor and the communication connection of outside environmental monitoring system, if the humidity that explosion-proof temperature-moisture sensor detects fireproof protection box is high
When default humidity, then send prompting changing to environmental monitoring system and do not fire the signal of dehumidifying material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610687109.6A CN106129952A (en) | 2016-08-18 | 2016-08-18 | A kind of high-voltage cable joint flameproof protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610687109.6A CN106129952A (en) | 2016-08-18 | 2016-08-18 | A kind of high-voltage cable joint flameproof protection method |
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| Publication Number | Publication Date |
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| CN106129952A true CN106129952A (en) | 2016-11-16 |
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ID=57279904
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610687109.6A Pending CN106129952A (en) | 2016-08-18 | 2016-08-18 | A kind of high-voltage cable joint flameproof protection method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106310564A (en) * | 2016-10-18 | 2017-01-11 | 上海市政工程设计研究总院（集团）有限公司 | Flame spread preventing method for cable tunnel fires |
| CN111276927A (en) * | 2020-04-01 | 2020-06-12 | 国网湖南省电力有限公司 | Cable intermediate joint monitoring and protecting device and system based on CT power taking and application method |
| CN111351527A (en) * | 2020-04-01 | 2020-06-30 | 国网湖南省电力有限公司 | Intelligent cable explosion-proof box with pressure and gas monitoring function, system and application method thereof |
| CN113689651A (en) * | 2021-07-16 | 2021-11-23 | 国网江苏省电力有限公司电力科学研究院 | Early fire early warning method and device for cable channel, early warning monitoring platform and storage medium |
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| US5015804A (en) * | 1990-03-26 | 1991-05-14 | Commander Electrical Materials, Inc. | Electrical cable connector for sealing an armoured electrical cable |
| FR2879037A1 (en) * | 2004-12-02 | 2006-06-09 | Atx Sa | Explosion-proof bushing for explosion-proof case connection, has conductor maintained inside rigid tube formed of cylinder, where cylinder penetrates into case by one of its ends traversing cable gland mounted in opening in wall of case |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111276927A (en) * | 2020-04-01 | 2020-06-12 | 国网湖南省电力有限公司 | Cable intermediate joint monitoring and protecting device and system based on CT power taking and application method |
| CN111351527A (en) * | 2020-04-01 | 2020-06-30 | 国网湖南省电力有限公司 | Intelligent cable explosion-proof box with pressure and gas monitoring function, system and application method thereof |
| CN113689651A (en) * | 2021-07-16 | 2021-11-23 | 国网江苏省电力有限公司电力科学研究院 | Early fire early warning method and device for cable channel, early warning monitoring platform and storage medium |
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Application publication date: 20161116 |
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