CN108053942A - A kind of production method of BTTZ fireproof cables - Google Patents
A kind of production method of BTTZ fireproof cables Download PDFInfo
- Publication number
- CN108053942A CN108053942A CN201711260366.2A CN201711260366A CN108053942A CN 108053942 A CN108053942 A CN 108053942A CN 201711260366 A CN201711260366 A CN 201711260366A CN 108053942 A CN108053942 A CN 108053942A
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- CN
- China
- Prior art keywords
- copper pipe
- copper
- guide wheel
- bttz
- production method
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- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/004—Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing rigid-tube cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/12—Insulating conductors or cables by applying loose fibres
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/227—Pretreatment
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
The invention discloses a kind of production methods of BTTZ fireproof cables, comprise the following steps：The copper strips of flat form is qualitative by shaper, it is gently curved to copper pipe state；On copper pipe both sides close to before closing up, first conductor wire core is fixed on before canned magnesia among copper pipe, then again through equipment auto-filling into magnesia；Copper pipe is welded after closing up；The copper pipe being welded is fed directly to front end guide wheel by guide wheel, needs altogether by 10 groups of guide wheels, 10 groups of guide wheels are into 360 degree of arrangements, and the diameter of every group of guide wheel is bigger 0.2mm than the diameter of previous group guide wheel, preliminary consolidation magnesia, and semi-finished product are made；Then semi-finished product are squeezed into drawing to get BTTZ fireproof cables by circular device again.The present invention realizes that length is minimum 3000 meters according to take-up reel size, and one-pass molding reduces production cost, mitigates worker's difficulty of construction, keeps fireproof cable characteristic, improves production efficiency.
Description
Technical field
The present invention relates to field of cable technology, are specifically a kind of production method of BTTZ fireproof cables.
Background technology
BTTZ fireproof cables are that a kind of outer layer makees insulation material using welding copper pipe sheath, intermediate filling magnesia crystal powder
Material, conductor is the novel cable of sub-thread copper rod composition, applied to places such as skyscraper, airport, harbour, underground railways, to
It ensures fire pump, Fire lift, local lighting, emergency evacuation instruction, security surveillance in case of fire, prevents, smoke evacuation system
And the fire powers such as power autonomous and important equipment run without interruption.
As skyscraper even high-rise building more comes also more, also accordingly increase for the length of cable, among cable
Connector is more few better, and connector is more few more can guarantee the performance of cable, which, which the quality accidents such as short circuit occurs, is all often
In joint, and connector difficulty is also big, once the misoperation in docking, is easy for causing the accidents such as short circuit.
The main performance of BTTZ fireproof cables：
1st, overload protection ability is strong：During circuit overload, as long as the melting temperature of copper is not achieved in fever, cable is not damaged.
Even if moment punctures, magnesia crystal will not form carbide at breakdown, and after overload eliminates, cable performance will not generate change
Change, may continue to normal use.
2nd, fire prevention completely：Cable itself does not burn completely, while will not trigger burning things which may cause a fire disaster.Even if in the feelings for thering is flame to roast
Under condition, as long as flame temperature is less than the melting temperature of copper, cable may continue to use without needing to change after flame eliminates.By flame
Poisonous smog and gas will not be generated in the case of barbecue.
3rd, operating temperature is high：Since the melting temperature of insulating layer magnesia crystal is far above the melting temperature of copper, thus electricity
Cable highest normal working temperature can continue to run at 1083 DEG C of the melting temperature close to copper in a short time up to 250 DEG C.
4th, anti-corrosion, explosion-proof performance are good：Due to making sheath using seamless copper pipe, so BTTZ cables have waterproof, moisture, oil
With the performance of some chemical substances infringement, copper pipe has comparable mechanical strength therefore has preferable explosion-proof performance.
The long BTTZ cables of service life are all made of inorganic material, and because insulation ag(e)ing may be not present, service life is reachable
To 3 times or more of common cable.
General BTTZ fireproof cables currently on the market, which are used in copper pipe, covers conductor wire core canned magnesia and then both ends again
Drawing is carried out after closing；
1st, existing cable there are length it is short the shortcomings that, generally only one, 70-80 rice；
2nd, because making moist more than cable length short circuit head therefore easily in construction；
3rd, need manually to carry out magnesia in producing canned into copper pipe low production efficiency；
4th, production technology is relatively difficult to control while low output, of high cost；
5th, cable is limited by production site, it is necessary to be performed in multiple times parallel drawing, and the cable of 80 meters of production needs altogether
Needing 300 meters or more could normally produce；
6th, in actual use because connector it is more, once connector processing it is bad will result in cable internal oxidation magnesium by
Becoming conductive layer after tide causes cable short circuit there are security risks.
7th, magnesia need before manufacture add in gel, after be pressed into bulk after dry, by being manually packed into copper pipe, if dry
Dry degree is not up to standard, and to will result in insulation resistance not up to standard and cause cable unqualified.
The content of the invention
It is mentioned above in the background art to solve it is an object of the invention to a kind of production method of BTTZ fireproof cables
Problem.
To achieve the above object, the present invention provides following technical solution：
A kind of production method of BTTZ fireproof cables, comprises the following steps：
1) it is the copper strips of flat form is qualitative by shaper, it is gently curved to copper pipe state；
2) first conductor wire core is fixed on copper pipe both sides close to before closing up before canned magnesia among copper pipe, then
Again through equipment auto-filling into magnesia；
3) welded after copper pipe closes up；
4) copper pipe being welded is fed directly to front end guide wheel by guide wheel, needs altogether by 10 groups of guide wheels, 10 groups of guide wheels
Into 360 degree of arrangements, and the diameter of every group of guide wheel is bigger 0.2mm than the diameter of previous group guide wheel, preliminary consolidation magnesia, is made
Semi-finished product；
5) semi-finished product and then are again squeezed into drawing to get BTTZ fireproof cables by circular device.
As further embodiment of the present invention：In step 1), pure copper strips are the pure copper strips of 2-5mm thickness copper content 99.99%.
As further embodiment of the present invention：In step 1), pure copper strips are the pure copper strips of 3mm thickness copper content 99.99%.
As further embodiment of the present invention：In step 1), shaper is 10 groups of shapers.
As further embodiment of the present invention：In step 2), conductor wire core uses 6-10mm fine copper sticks.
As further embodiment of the present invention：In step 2), conductor wire core uses 8mm fine copper sticks.
As further embodiment of the present invention：In step 5), in BTTZ fireproof cables, a diameter of 4.5-6mm of conductor, copper
The thickness of pipe is 0.2-0.5mm.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, solve the problems, such as that BTTZ cable lengths break only 70-80 meters every, realize length be according to take-up reel size most
It is 3000 meters few, one-shaping technique；
2nd, production cost is reduced, without artificial canned inorganic oxide magnesium, substantially reduces labour cost；
3rd, worker's difficulty of construction is mitigated, cable connector is few, directly reduces the man-hour in construction, directly lays；
4th, fireproof cable characteristic is kept, combustion heat value PCS≤2.0MJ/kg passes through A grades of highests in GB1247-2014 standards
Grade：Non-ignitable grade；
5th, production efficiency is improved, continuous production mode need not have 80 meters to replace once, realize flow line production pattern, reach
Without line length.
6th, cable production site is reduced, is not to use original production process in cable production, but is spirally carried out from eminence
Drawing is squeezed, reduces production site more than 50%.
Description of the drawings
Fig. 1 is the flow sheet of the present invention.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical solution in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art's all other embodiments obtained without making creative work, all
Belong to the scope of protection of the invention.
Embodiment 1
Referring to Fig. 1, in the embodiment of the present invention, a kind of production method of BTTZ fireproof cables comprises the following steps：
1) pure copper strips of 3mm thickness copper content 99.99% are used, it is qualitative by 10 groups of shapers, make pure copper strips from flat
State is gently curved to copper pipe state；
2) on copper pipe both sides close to before closing up, it is fixed on using 8mm fine copper stick as conductor wire core before canned magnesia
Among copper pipe；Then again by equipment auto-filling into magnesia；
3) welded after copper pipe closes up；
4) copper pipe being welded is fed directly to front end guide wheel by guide wheel, needs altogether by 10 groups of guide wheels, and guide wheel is into 360
Degree arrangement, and every group of guide wheel is all bigger 0.2mm than previous group guide wheel, carries out the magnesium oxide insulated layer of compacting early period the inside；
5) drawing is squeezed by circular device, ultimately forms the conductor of 6mm diameters, copper pipe, that is, restrictive coating of 0.5mm thickness, system
BTTZ fireproof cables are obtained, detection performance meets fire protection requirement, is put in storage.
Embodiment 2
In the embodiment of the present invention, a kind of production method of BTTZ fireproof cables comprises the following steps：
1) pure copper strips of 2mm thickness copper content 99.99% are used, it is qualitative by 10 groups of shapers, make pure copper strips from flat
State is gently curved to copper pipe state；
2) on copper pipe both sides close to before closing up, it is fixed on using 6mm fine copper stick as conductor wire core before canned magnesia
Among copper pipe；Then again by equipment auto-filling into magnesia；
3) welded after copper pipe closes up；
4) copper pipe being welded is fed directly to front end guide wheel by guide wheel, needs altogether by 10 groups of guide wheels, and guide wheel is into 360
Degree arrangement, and every group of guide wheel is all bigger 0.2mm than previous group guide wheel, carries out the magnesium oxide insulated layer of compacting early period the inside；
5) drawing is squeezed by circular device, ultimately forms the conductor of 5mm diameters, copper pipe, that is, restrictive coating of 0.2mm thickness, system
BTTZ fireproof cables are obtained, detection performance meets fire protection requirement, is put in storage.
Embodiment 3
In the embodiment of the present invention, a kind of production method of BTTZ fireproof cables comprises the following steps：
1) pure copper strips of 5mm thickness copper content 99.99% are used, it is qualitative by 10 groups of shapers, make pure copper strips from flat
State is gently curved to copper pipe state；
2) on copper pipe both sides close to before closing up, it is fixed on using 10mm fine copper stick as conductor wire core before canned magnesia
Among copper pipe；Then again by equipment auto-filling into magnesia；
3) welded after copper pipe closes up；
4) copper pipe being welded is fed directly to front end guide wheel by guide wheel, needs altogether by 10 groups of guide wheels, and guide wheel is into 360
Degree arrangement, and every group of guide wheel is all bigger 0.2mm than previous group guide wheel, carries out the magnesium oxide insulated layer of compacting early period the inside；
5) drawing is squeezed by circular device, ultimately forms the conductors of 4.5mm diameters, copper pipe, that is, restrictive coating of 0.5mm thickness,
BTTZ fireproof cables are made, detection performance meets fire protection requirement, is put in storage.
Cable model specification made from above-described embodiment：YT-BTTZ 1*16
The construction of cable：
Conductor：1/4.5mm bare copper conductor outer diameter 4.5-6mm；
Insulation：Magnesium oxide insulated, thickness 0.2mm；
Sheath：0.2-0.5mm thickness copper pipe welding fabrications.
Cable made from the embodiment of the present invention, electric property:
1. conductor DC resistance：≤1.15Ω/km
2. sheath D.C. resistance：≤0.455Ω/km
3. insulation resistance：≥5000MΩ·km(20℃)
4. service life：More than 70 years
5. environmental protection characteristic：Meet RoHS
6. fire performance：By the external fire-protection standard requirement such as BS6387,8491, meet the non-ignitable grades of GB/T3147 and survey
Examination.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.
Moreover, it will be appreciated that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
Using specification as an entirety, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (7)
1. a kind of production method of BTTZ fireproof cables, which is characterized in that comprise the following steps：
1）The copper strips of flat form is qualitative by shaper, it is gently curved to copper pipe state；
2）On copper pipe both sides close to before closing up, first conductor wire core is fixed on before canned magnesia among copper pipe, is then passed through again
Equipment auto-filling is into magnesia；
3）Copper pipe is welded after closing up；
4）The copper pipe being welded is fed directly to front end guide wheel by guide wheel, needs altogether by 10 groups of guide wheels, and 10 groups of guide wheels are into 360
Degree arrangement, and the diameter of every group of guide wheel is bigger 0.2mm than the diameter of previous group guide wheel, preliminary consolidation magnesia, be made half into
Product；
5）Then semi-finished product are squeezed into drawing to get BTTZ fireproof cables by circular device again.
2. the production method of BTTZ fireproof cables according to claim 1, which is characterized in that step 1）In, pure copper strips are
The pure copper strips of 2-5mm thickness copper content 99.99%.
3. the production method of BTTZ fireproof cables according to claim 2, which is characterized in that step 1）In, pure copper strips are
The pure copper strips of 3mm thickness copper content 99.99%.
4. the production method of BTTZ fireproof cables according to claim 1, which is characterized in that step 1）In, shaper
For 10 groups of shapers.
5. the production method of BTTZ fireproof cables according to claim 1, which is characterized in that step 2）In, conductor wire core
Using 6-10mm fine copper sticks.
6. the production method of BTTZ fireproof cables according to claim 5, which is characterized in that step 2）In, conductor wire core
Using 8mm fine copper sticks.
7. the production method of BTTZ fireproof cables according to claim 1, which is characterized in that step 5）In, BTTZ fire prevention
In cable, a diameter of 4.5-6mm of conductor, the thickness of copper pipe is 0.2-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711260366.2A CN108053942A (en) | 2017-12-04 | 2017-12-04 | A kind of production method of BTTZ fireproof cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711260366.2A CN108053942A (en) | 2017-12-04 | 2017-12-04 | A kind of production method of BTTZ fireproof cables |
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| Publication Number | Publication Date |
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| CN108053942A true CN108053942A (en) | 2018-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711260366.2A Pending CN108053942A (en) | 2017-12-04 | 2017-12-04 | A kind of production method of BTTZ fireproof cables |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488273A (en) * | 2021-07-30 | 2021-10-08 | 大石桥市美尔镁制品有限公司 | High-temperature-resistant high-pressure-resistant moisture-proof fireproof cable and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496422A (en) * | 2011-12-26 | 2012-06-13 | 宝胜科技创新股份有限公司 | Manufacturing technology of long-length jointless mineral insulation cable |
| CN102682927A (en) * | 2012-05-30 | 2012-09-19 | 江苏远方电缆厂有限公司 | Production method of mineral insulated cable |
-
2017
- 2017-12-04 CN CN201711260366.2A patent/CN108053942A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496422A (en) * | 2011-12-26 | 2012-06-13 | 宝胜科技创新股份有限公司 | Manufacturing technology of long-length jointless mineral insulation cable |
| CN102682927A (en) * | 2012-05-30 | 2012-09-19 | 江苏远方电缆厂有限公司 | Production method of mineral insulated cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488273A (en) * | 2021-07-30 | 2021-10-08 | 大石桥市美尔镁制品有限公司 | High-temperature-resistant high-pressure-resistant moisture-proof fireproof cable and preparation method thereof |
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Application publication date: 20180518 |
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