CN107466121A - One kind fire prevention mineral insulation heating cable and its processing method - Google Patents
One kind fire prevention mineral insulation heating cable and its processing method Download PDFInfo
- Publication number
- CN107466121A CN107466121A CN201710788964.0A CN201710788964A CN107466121A CN 107466121 A CN107466121 A CN 107466121A CN 201710788964 A CN201710788964 A CN 201710788964A CN 107466121 A CN107466121 A CN 107466121A
- Authority
- CN
- China
- Prior art keywords
- heating cable
- metal
- external bushing
- coat
- cable
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 50
- 238000009413 insulation Methods 0.000 title claims abstract description 22
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 20
- 239000011707 mineral Substances 0.000 title claims abstract description 20
- 230000002265 prevention Effects 0.000 title claims abstract description 16
- 238000003672 processing method Methods 0.000 title claims description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 48
- 239000002184 metal Substances 0.000 claims abstract description 48
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 19
- 239000010935 stainless steel Substances 0.000 claims abstract description 19
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 17
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003365 glass fiber Substances 0.000 claims description 15
- 239000011241 protective layer Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- 239000010410 layer Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000005452 bending Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/54—Heating elements having the shape of rods or tubes flexible
- H05B3/56—Heating 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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0258—Disposition of insulation comprising one or more longitudinal lapped layers of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Resistance Heating (AREA)
- Cable Accessories (AREA)
Abstract
The invention provides one kind fire prevention mineral insulation heating cable, heating cable and conductive cable including interconnection, the heating cable includes metal core, stainless steel outer sleeve pipe and the magnesium oxide insulated layer of filling, also include the external bushing for being socketed in the heating cable side, the external bushing includes the end of thread and the wedge-like opening relative with the end of thread positioned at described heating cable one end, neck bush is provided with the wedge-like opening, the end of thread is threaded with threaded sleeve, the threaded sleeve is connected with collar joint with the neck bush outer end, coat of metal is wound with the outside of the heating cable and the conductive cable joint design.
Description
Technical field
The present invention relates to field of cable technology, more particularly to a kind of fire prevention mineral insulation heating cable and its processing method.
Background technology
With increase of all trades and professions to electricity needs, the use of cable and the requirement of cable laying and environment also by
In gradually improving.The cable of common single type can not meet present various demands.
Although existing twin-core mineral insulation heating cable has many good qualities, for example crush resistance strength is high, high temperature resistant and energy
Bear in corrosive atmosphere, the features such as service life is long.But mineral insulation heating cable heating core wire and stainless steel oversheath
Between be filling magnesia realize insulation.And magnesia characteristic is easily to absorb water to make moist, magnesia water suction is made moist and on the one hand led
Insulating capacity is caused to decline, second, easily causing stainless steel oversheath to ftracture and lose using energy if made moist in use
Power.Bending with the presence of external pressure, the weld seam at mineral insulation heating cable end-fitting is easy to crack, causes junction
The magnesia of filling makes moist, cable failure.In cable manufacturing process, it is difficult to ensure that the quantity of the magnesia of junction filling, holds
Easily cause magnesia skewness, form air cavity, impacted in follow-up welding.
The content of the invention
The invention provides one kind fire prevention mineral insulation heating cable and its processing method, it is therefore intended that overcomes prior art
The problem of middle.
In order to reach the purpose, the present invention adopts the following technical scheme that：
One kind fire prevention mineral insulation heating cable, include the heating cable and conductive cable of interconnection, the heating cable bag
Include the magnesium oxide insulated layer of metal core, stainless steel outer sleeve pipe and filling, it is characterised in that：Also include being socketed in the heating
The external bushing of cable side, the external bushing include positioned at described heating cable one end the end of thread and with the end of thread phase
To wedge-like opening, be provided with neck bush in the wedge-like opening, the end of thread is threaded with threaded sleeve, the screw thread
Sleeve pipe is connected with collar joint with the neck bush outer end, is twined on the outside of the heating cable and the conductive cable joint design
Coat of metal is wound with, the coat of metal includes main part and formed positioned at the main part side with the main body
The extension of U-shaped groove, on the extension and the main part is provided with the projection of snap fit, the coat of metal
It is welded to connect between both ends and the external bushing.
External bushing, neck bush, threaded sleeve and collar joint set coordinate carries out sealed insulation to cable connector, uses
Coat of metal improves the counter-bending and compressive property of junction.
As a preferred embodiment, the main part is provided with groove close to the external bushing side, the groove is along the metal
The bearing of trend extension of protective layer.
As a preferred embodiment, the cross sectional shape of the groove is square.
As a preferred embodiment, the main part is integrally formed with the extension.
As a preferred embodiment, set between the heating cable and the conductive cable joint design and the coat of metal
There is glass fibre belt.
Thus, when cable bend is with being pressurized, glass fibre belt offsets coat of metal and stainless steel outer sleeve pipe and lining
The portion extrusion of inner room and rubbing action.
The processing method of fire prevention mineral insulation heating cable, it is characterised in that comprise the following steps：
Step 1, external bushing, neck bush, threaded sleeve and collar joint be inserted in heating cable and conductive cable, to sending and receiving
The metal core of electric heating cable and conductive cable simultaneously welds together, and adjusting the position of the external bushing makes to be located at institute in the middle part of its inner chamber
State near metal core junction, knob thread sleeve pipe, tighten the collar joint and the external bushing is fixed, from institute
State external bushing wedge-like opening side and pour into magnesia powder, insert the neck bush and compress the magnesia powder in the external bushing,
The neck bush is fixed the collar joint for tightening the side；
Step 2, winding glass fiber tape, the fully wrapped around external bushing of glass fiber tape, neck bush, threaded sleeve, collar joint
And both sides at least 100mm stainless steel outer sleeve pipe, glass fiber tape outside winding coat of metal simultaneously protect adjacent metal
The extension of layer fastens, and uses the junction of high temperature resistant solder welding metal protective layer and stainless steel outer sleeve pipe.
As a preferred embodiment, after fixing the external bushing and the neck bush, to the external bushing, the neck bush,
Joint gap between the threaded sleeve and the collar joint and the stainless steel outer sleeve pipe carries out built-up welding.
As a preferred embodiment, coat of metal both ends are wrapped in stainless steel outer sleeve Guan Shanghou, metal is fixed by clip and protected
The end side of sheath, to be welded to metal sheath layer both ends.
To sum up, the present invention has advantages below：Joint sealing effect is good, easy to operate, avoids the magnesia of filling
Powder makes moist denaturation, the not easily damaged destruction of joint, extends service life.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is heating cable schematic cross-section；
Fig. 3 is coat of metal cross section structure schematic diagram.
Label in figure is as follows：
1. heating cable, 11. metal cores, 12. outer tubes, 13. magnesium oxide insulated layers, 2. conductive cables, 3. external bushings, 31.
The end of thread, 32. wedge-like openings, 4. neck bush, 5. threaded sleeves, 6. collar joints, 7. coat of metals, 71. main parts,
72. extension, 8. glass fibre belts.
Embodiment
The invention will be further described for middle embodiment below in conjunction with the accompanying drawings.
A kind of fire prevention mineral insulation heating cable as shown in Figure 1 to Figure 3, including the heating cable 1 of interconnection and lead
Electrical cables 2, heating cable 1 include the magnesium oxide insulated layer 13 of metal core 11, stainless steel outer sleeve pipe 12 and filling.Also include
The external bushing 3 of the side of heating cable 1 is socketed in, external bushing 3 includes the end of thread 31 and and screw thread positioned at the one end of heating cable 1
Hold relative wedge-like opening 32.Neck bush 4 is provided with wedge-like opening 32, the end of thread 31 is threaded with threaded sleeve 5, screw thread
Sleeve pipe 5 is connected with collar joint 6 with the outer end of neck bush 4, and gold is wound with the outside of heating cable 1 and the joint design of conductive cable 2
Belong to protective layer 7, coat of metal 7 includes main part 71 and forms stretching for U-shaped groove with main body positioned at the side of main part 71
Go out portion 72, on extension 72 and main part 71 is provided with the projection of snap fit, the both ends of coat of metal 7 and external bushing 3
Between be welded to connect.External bushing 3, neck bush 4, threaded sleeve 5 and collar joint 6, which coordinate, to cable connector seal absolutely
Edge, the counter-bending and compressive property of junction is improved using coat of metal 7.
Main part 71 is provided with groove, bearing of trend extension of the groove along coat of metal 7 close to the side of external bushing 3.Groove
Cross sectional shape to be square.Main part 71 is integrally formed with extension 72.
Glass fibre belt 8 is provided between heating cable 1 and the joint design of conductive cable 2 and coat of metal 7, in cable
When bending is with being pressurized, glass fibre belt 8 offset portion extrusion between coat of metal 7 and stainless steel outer sleeve pipe 12 and bushing and
Rubbing action.
A kind of processing method for mineral insulation heating cable of preventing fires, comprises the following steps：
Step 1, external bushing 3, neck bush 4, threaded sleeve 5 and collar joint 6 be inserted in heating cable 1 and conductive cable 2,
The metal core 11 of docking heating cable 1 and conductive cable 2 simultaneously welds together, and the position of adjustment external bushing 3 makes in its inner chamber
Portion is located near the junction of metal core 11, knob thread sleeve pipe 5, tightens collar joint 6 and external bushing 3 is fixed, from
The wedge-like opening side of external bushing 3 pours into magnesia powder, inserts neck bush 4 and compresses the magnesia powder in external bushing 3, tightens the side
Collar joint 6 neck bush 4 is fixed；
Step 2, winding glass fiber tape, the fully wrapped around external bushing 3 of glass fiber tape, neck bush 4, threaded sleeve 5, bite type connect
First 6 and both sides at least 100mm stainless steel outer sleeve pipe 12, winding coat of metal 7 and by adjacent gold on the outside of glass fiber tape
The extension 72 of category protective layer 7 fastens, and uses the connection of high temperature resistant solder welding metal protective layer 7 and stainless steel outer sleeve pipe 12
Place.
After fixing external bushing 3 and neck bush 4, to external bushing 3, neck bush 4, threaded sleeve 5 and the and of collar joint 6
Joint gap between stainless steel outer sleeve pipe 12 carries out built-up welding.After the both ends of coat of metal 7 are wrapped on stainless steel outer sleeve pipe 12,
The end side of coat of metal 7 is fixed by clip, the both ends of coat of metal 7 are welded.
Described above is only explanation of the invention so that those of ordinary skill in the art's can completely implements we
Case, but be not limitation of the present invention, those skilled in the art can be as needed to this reality after this specification is read
The modification that example makes no creative contribution is applied, these are all without creative modification, but as long as in the right of the present invention
All protected in claimed range by Patent Law.
Claims (8)
1. one kind fire prevention mineral insulation heating cable, include the heating cable of interconnection（1）And conductive cable（2）, the hair
Electric heating cable（1）Including metal core（11）, stainless steel outer sleeve pipe（12）And the magnesium oxide insulated layer of filling（13）, its feature exists
In：Also include being socketed in the heating cable（1）The external bushing of side（3）, the external bushing（3）Including positioned at the heating electric
Cable（1）The end of thread of side（31）And the wedge-like opening relative with the end of thread（32）, the wedge-like opening（32）Inside set
It is equipped with neck bush（4）, the end of thread（31）It is threaded with threaded sleeve（5）, the threaded sleeve（5）With the neck bush
（4）Outer end is connected with collar joint（6）, the heating cable（1）With the conductive cable（2）It is wound with the outside of joint design
Coat of metal（7）, the coat of metal（7）Including main part（71）And positioned at the main part（71）Side with institute
State the extension that main body forms U-shaped groove（72）, the extension（72）Upper and described main part（71）Match somebody with somebody provided with engaging
The projection of conjunction, the coat of metal（7）Both ends and the external bushing（3）Between be welded to connect.
A kind of 2. fire prevention mineral insulation heating cable according to claim 1, it is characterised in that：The main part（71）Lean on
The nearly external bushing（3）Side is provided with square groove, and the groove is along the coat of metal（7）Bearing of trend extension.
A kind of 3. fire prevention mineral insulation heating cable according to claim 2, it is characterised in that：The section shape of the groove
Shape is square.
A kind of 4. fire prevention mineral insulation heating cable according to claim 1, it is characterised in that：The main part（71）With
The extension（72）It is integrally formed.
A kind of 5. fire prevention mineral insulation heating cable according to claim 1, it is characterised in that：The heating cable（1）
With the conductive cable（2）Joint design and the coat of metal（7）Between be provided with glass fibre belt（8）.
6. a kind of processing method of fire prevention mineral insulation heating cable as described in claim 1-5 any one, its feature exist
In comprising the following steps：
Step 1, by external bushing（3）, neck bush（4）, threaded sleeve（5）And collar joint（6）It is inserted in heating cable（1）With
Conductive cable（2）, dock heating cable（1）And conductive cable（2）Metal core（11）And weld together, adjust described outer
Bushing（3）Position make to be located at the metal core in the middle part of its inner chamber（11）Near junction, knob thread sleeve pipe（5）, tighten
The collar joint（6）To the external bushing（3）It is fixed, from the external bushing（3）Wedge-like opening side pours into oxidation
Magnesium powder, insert the neck bush（4）And compress the external bushing（3）Interior magnesia powder, the bite type for tightening the side connect
Head（6）To the neck bush（4）It is fixed；
Step 2, winding glass fiber tape, the fully wrapped around external bushing of glass fiber tape（3）, neck bush（4）, threaded sleeve（5）, card
Shell type joint（6）And both sides at least 100mm stainless steel outer sleeve pipe（12）, glass fiber tape outside winding coat of metal
（7）And by adjacent metal protective layer（7）Extension（72）Fasten, use high temperature resistant solder welding metal protective layer（7）With not
Become rusty steel sleeve pipe（12）Junction.
7. the processing method of fire prevention mineral insulation heating cable according to claim 6, it is characterised in that：Fix described
External bushing（3）With the neck bush（4）Afterwards, to the external bushing（3）, the neck bush（4）, the threaded tube and described
Collar joint（6）With the stainless steel outer sleeve pipe（12）Between joint gap carry out built-up welding.
8. the processing method of fire prevention mineral insulation heating cable according to claim 6, it is characterised in that：Coat of metal
（7）Both ends are wrapped in stainless steel outer sleeve pipe（12）After upper, coat of metal is fixed by clip（7）End side and welded
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710788964.0A CN107466121B (en) | 2017-09-05 | 2017-09-05 | Fireproof mineral insulation heating cable and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710788964.0A CN107466121B (en) | 2017-09-05 | 2017-09-05 | Fireproof mineral insulation heating cable and processing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107466121A true CN107466121A (en) | 2017-12-12 |
| CN107466121B CN107466121B (en) | 2023-12-12 |
Family
ID=60551775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710788964.0A Active CN107466121B (en) | 2017-09-05 | 2017-09-05 | Fireproof mineral insulation heating cable and processing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107466121B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108347792A (en) * | 2018-04-25 | 2018-07-31 | 福建通宇电缆有限公司 | A kind of insulation heating cable |
| CN108894734A (en) * | 2018-06-21 | 2018-11-27 | 招商局重工（江苏）有限公司 | A kind of electric-heating belt is placed in the combustible ice Primordial Qi oil reservoir standpipe device outside oil reservoir standpipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020074151A1 (en) * | 2000-12-20 | 2002-06-20 | Dancy Kevin C. | Termination coupling for mineral insulated cable |
| CN1543694A (en) * | 2001-06-20 | 2004-11-03 | �����ա��ڵ� | Conductor system |
| CN103945583A (en) * | 2014-05-08 | 2014-07-23 | 博太科防爆设备（上海）有限公司 | Fireproof mineral insulation heating cable loop structure and manufacturing method thereof |
| WO2015146220A1 (en) * | 2014-03-28 | 2015-10-01 | 住友電気工業株式会社 | Terminal structure for superconducting cable |
| CN207266316U (en) * | 2017-09-05 | 2018-04-20 | 福建通宇电缆有限公司 | One kind fire prevention mineral insulation heating cable |
-
2017
- 2017-09-05 CN CN201710788964.0A patent/CN107466121B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020074151A1 (en) * | 2000-12-20 | 2002-06-20 | Dancy Kevin C. | Termination coupling for mineral insulated cable |
| CN1543694A (en) * | 2001-06-20 | 2004-11-03 | �����ա��ڵ� | Conductor system |
| WO2015146220A1 (en) * | 2014-03-28 | 2015-10-01 | 住友電気工業株式会社 | Terminal structure for superconducting cable |
| CN103945583A (en) * | 2014-05-08 | 2014-07-23 | 博太科防爆设备（上海）有限公司 | Fireproof mineral insulation heating cable loop structure and manufacturing method thereof |
| CN207266316U (en) * | 2017-09-05 | 2018-04-20 | 福建通宇电缆有限公司 | One kind fire prevention mineral insulation heating cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108347792A (en) * | 2018-04-25 | 2018-07-31 | 福建通宇电缆有限公司 | A kind of insulation heating cable |
| CN108894734A (en) * | 2018-06-21 | 2018-11-27 | 招商局重工（江苏）有限公司 | A kind of electric-heating belt is placed in the combustible ice Primordial Qi oil reservoir standpipe device outside oil reservoir standpipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107466121B (en) | 2023-12-12 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20231116 Address after: 044000 South Sushui Avenue Industrial Science and Technology Park, Huanghe Avenue, Yanhu District, Yuncheng City, Shanxi Province Applicant after: Shanxi Haishun Cable Co.,Ltd. Address before: No. 1, Ancient Locust Fragment, Binhai Industrial Concentration Zone, Fuzhou City, 350000 Fujian Province Applicant before: FUJIAN TONGYU CABLES Co.,Ltd. |
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