CN113950174B - Special heat tracing power cable - Google Patents
Special heat tracing power cable Download PDFInfo
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- CN113950174B CN113950174B CN202111278010.8A CN202111278010A CN113950174B CN 113950174 B CN113950174 B CN 113950174B CN 202111278010 A CN202111278010 A CN 202111278010A CN 113950174 B CN113950174 B CN 113950174B
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- heat
- conductor
- temperature
- heat conduction
- heating
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- 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
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- 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
- H01B7/40—Insulated conductors or cables characterised by their form with arrangements for facilitating mounting or securing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire
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- 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
- H05B3/02—Details
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Insulated Conductors (AREA)
- Resistance Heating (AREA)
Abstract
The invention discloses a special heat tracing electric power cable, which comprises a cable body, wherein the cable body is positioned in an inner cavity of a heat insulation outer sheath, and one or more heat conduction pipes attached to the cable body are arranged in the inner cavity; a temperature sensor is arranged in the heat-insulating outer sheath, and the temperature sensor is connected with a temperature controller and a controller which are powered by a power supply through wires; a plurality of spaced heating strips are arranged in the heat conduction pipe, and the core wires penetrate through and connect the heating strips in series; the heating belt comprises a heating block, a heat conducting layer and a metal frame, and a high-temperature-resistant filling medium is filled in the heat conducting pipe; the heat conducting pipe is also internally provided with a heat preservation layer wrapped in the heating belt, and the outer side of the heat preservation layer is wrapped with a metal net. The invention has the following advantages and effects: the heat tracing effect can be improved, and the temperature balance of heat exchange can be optimized.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a special heat tracing electric power cable.
Background
The heat tracing cable is also called as an electric heat tracing band, is a cable structure product which takes electric power as an energy source, utilizes alloy resistance wires to carry out electrifying and heating to achieve a heat preservation effect, is a flat long band, is widely applied to the industrial, building and commercial fields, is mainly used for antifreezing and heat preservation of pipelines, valves, pump bodies, storage tanks, reaction towers, instrument boxes, pavements, tunnels, ground heating and the like, and can automatically limit and maintain the heating temperature.
However, the heat tracing cable in the prior art has the defects of poor heat tracing effect and large temperature difference of local heat exchange under some environments with relatively low temperature. Therefore, it is necessary to provide a special heat tracing power cable to improve the heat tracing effect and optimize the temperature balance of heat exchange.
Disclosure of Invention
The invention aims to provide a special heat tracing power cable for solving the problems in the background technology.
The technical aim of the invention is realized by the following technical scheme: the special heat tracing power cable comprises a cable body, wherein a heat insulation outer sheath is sleeved outside the cable body, an inner cavity is formed in the heat insulation outer sheath, the cable body is positioned in the inner cavity, one or more heat conduction pipes attached to the cable body are arranged in the inner cavity, a core wire formed by twisting a plurality of copper wires is arranged in the heat conduction pipes in a penetrating mode, the cable body is bound and fixed with the heat conduction pipes through heat insulation adhesive tapes, and the heat insulation adhesive tapes are aluminum foil adhesive tapes and have the thickness of 0.13 millimeter;
a temperature sensor is arranged in the heat-insulating outer sheath, the real-time temperature in the heat-insulating outer sheath is obtained through the temperature sensor, the temperature sensor is connected to a temperature controller through a wire, the temperature controller is used for realizing the visualization and adjustment of a temperature value, the temperature controller is connected to a controller through a wire, the controller is connected between a power supply and a core wire to play a role in adjusting the current, and the temperature sensor, the temperature controller and the controller are all powered by the power supply;
a plurality of heating belts are regularly arranged in the heat conduction pipe, the heating belts are arranged at intervals, and the core wires penetrate through the heating belts and are connected in series; each heating belt comprises a heating block positioned at the central position, the heating block can generate heat after being electrified, a heat conducting layer which expands the area to diffuse the heat generated by the heating block is wrapped on the periphery of the heating block, a metal frame which has a fixed shape and can conduct heat is wrapped outside the heat conducting layer, and a high-temperature-resistant filling medium is filled in the heat conducting pipe;
the heat conducting pipe is internally provided with a heat insulating layer wrapped on the outer side of the heating belt, the outer side of the heat insulating layer is wrapped with a metal net capable of conducting heat, and the metal net is clung to the cable body.
The further arrangement is that: a heat conduction connecting bridge is arranged between the metal frame and the heat preservation layer, the heat conduction connecting bridge is provided with a bottom edge which is attached to the upper end/lower end of the metal frame and a top edge which is attached to the heat preservation layer, and the top edges of the adjacent heat conduction connecting bridges are connected, so that heat released by the metal frame is uniformly exchanged onto the heat preservation layer, and the occurrence of the situation of local temperature imbalance is avoided.
The further arrangement is that: the heating block is made of PTC conductive material.
The further arrangement is that: the heat conduction layer and the heat conduction connecting bridge are both made of graphene.
The further arrangement is that: the heat preservation layer is made of alkali superfine glass wool.
The further arrangement is that: the cable body comprises a wire, an electromagnetic shielding layer is wrapped outside the wire, and the electromagnetic shielding layer is of a metal net structure; the lead comprises a first conductor and a second conductor, the first conductor is positioned at the upper end of the second conductor, a first filling rope which is attached to the first conductor and the second conductor is arranged on the left side of the first conductor and the second conductor, a second filling rope which is attached to the first conductor and the second conductor is arranged on the right side of the first conductor and the second conductor, and a non-wetting filler is filled in the lead.
The further arrangement is that: : the first filling rope and the second filling rope are both made of polypropylene.
The further arrangement is that: : the non-wetting filler comprises glass fiber and polypropylene.
The invention has the beneficial effects that:
1. according to the invention, heat exchange with the cable body is realized by arranging the heat conduction pipe, and heat released by the heat conduction pipe is prevented from being lost due to contact with air by arranging the heat insulation outer sheath, so that the utilization rate can be effectively improved, and the effect is better; in addition, the aluminum foil tape is arranged to bind the heat insulation tape and the heat conduction pipe, so that the stability is better.
2. According to the invention, temperature detection, display and control are realized by arranging the temperature sensor, the temperature controller and the controller, visual adjustment is convenient for a user, real-time temperature in the heat insulation outer sheath is effectively mastered, and tracking adjustment is convenient.
3. According to the invention, the heat conducting pipes are regularly provided with the heating strips, the heating blocks of each heating strip can generate heat after being electrified, and the heating strips are arranged at intervals, so that mutual interference can be effectively avoided, and the heat is more uniformly dispersed; then, the heat conduction layer is arranged to enlarge the area so that the heat can be diffused more widely and uniformly; and then, heat conduction is realized by arranging the metal frame, released heat is guided to the heat insulation layer outside the heating belt, and the metal frame also has the function of fixing the shape of the heating belt, so that the situation that the heating belt stretches and expands under external vibration is avoided. The arrangement of the heat preservation layer can enable heat to be more stably diffused to all positions of the heat preservation layer, and the stability of all positions of the heat preservation layer is similar.
4. In the invention, a heat conduction connecting bridge is arranged, the heat conduction connecting bridge is provided with a bottom edge which is attached to the upper end/lower end of the metal frame and a top edge which is attached to the heat insulation layer, and the top edges of the adjacent heat conduction connecting bridges are connected, so that heat released by the metal frame is uniformly heat-exchanged to the heat insulation layer, and the occurrence of the situation of unbalanced local temperature is avoided.
5. In the present invention, electromagnetic shielding is achieved by providing an electromagnetic shielding layer.
6. In the invention, the first filling rope, the second filling rope and the non-wet filling are arranged to fix the first conductor and the second conductor, so that the structural stability is optimized.
Drawings
FIG. 1 is a schematic diagram of an embodiment;
FIG. 2 is a schematic diagram of a heat pipe according to an embodiment;
fig. 3 is a schematic structural diagram of a cable body in an embodiment.
In the figure: 1. a cable body; 2. a heat insulating outer jacket; 3. a heat conduction pipe; 41. thermal insulation adhesive tape; 51. a temperature sensor; 52. a temperature controller; 53. a controller; 54. a power supply; 61. a core wire; 31. a heating belt; 311. a heating block; 312. a heat conducting layer; 313. a metal frame; 32. filling a medium; 33. a heat preservation layer; 34. a metal mesh; 35. a thermally conductive connecting bridge; 351. a bottom edge; 352. a top edge; 11. an electromagnetic shielding layer; 121. a first conductor; 122. a second conductor; 131. a first fill cord; 132. a second fill cord; 14. a non-wetting filler.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, a special heat tracing power cable comprises a cable body 1, wherein a heat insulation outer sheath 2 is sleeved outside the cable body 1, an inner cavity is formed in the heat insulation outer sheath 2, the cable body 1 is positioned in the inner cavity, a heat conducting pipe 3 attached to the cable body 1 is arranged in the inner cavity, a core wire 61 formed by twisting a plurality of copper wires is penetrated into the heat conducting pipe 3, the cable body 1 is bound and fixed with each heat conducting pipe 3 through a heat insulation adhesive tape 41, the heat insulation adhesive tape 41 adopts an aluminum foil adhesive tape, and the thickness is 0.13 mm;
a temperature sensor 51 is arranged in the heat-insulating outer sheath 2, the real-time temperature in the heat-insulating outer sheath 2 is obtained through the temperature sensor 51, the temperature sensor 51 is connected to a temperature controller 52 through a wire, the temperature value is visualized and regulated through the temperature controller 52, the temperature controller 52 is connected to a controller 53 through a wire, the controller 53 is connected between a power supply 54 and a core wire 61 to play a role in regulating the current, and the temperature sensor 51, the temperature controller 52 and the controller 53 are all powered by the power supply 54; when heating is needed, the core wire 61 is communicated, and when electrons of the core wire 61 pass through the heating block 311, the heating block 311 releases heat, and the heating power is improved by increasing current. The controller 53 includes a single chip microcomputer and an existing power driving circuit.
A plurality of heating belts 31 are regularly arranged in the heat conduction pipe 3, the heating belts 31 are arranged at intervals, and the core wires 61 penetrate through the heating belts 31 and are connected in series; each heating belt 31 comprises a heating block 311 positioned at the central position, the heating block 311 can generate heat after being electrified, a heat conducting layer 312 with an enlarged area for diffusing the heat generated by the heating block 311 is wrapped on the periphery of the heating block 311, a metal frame 313 which has a fixed shape and can conduct heat is wrapped on the heat conducting layer 312, and a high-temperature-resistant filling medium 32 is filled in the heat conducting pipe 3;
the heat conducting pipe 3 is also internally provided with a heat preservation layer 33 wrapped on the outer side of the heating belt 31, a metal net 34 capable of conducting heat is wrapped on the outer side of the heat preservation layer 33, and the metal net 34 is closely attached to the cable body 1.
Wherein, a heat-conducting connection bridge 35 is disposed between the metal frame 313 and the heat-insulating layer 33, the heat-conducting connection bridge 35 has a bottom edge 351 attached to the upper/lower end of the metal frame 313, and a top edge 352 attached to the heat-insulating layer 33, and the top edges 352 of adjacent heat-conducting connection bridges 35 are connected, so that the heat released by the metal frame 313 is uniformly heat-exchanged to the heat-insulating layer 33, and the occurrence of local temperature imbalance is avoided.
Wherein the heat block 311 is made of PTC conductive material.
Wherein, the heat conduction layer 312 and the heat conduction connection bridge 35 are both made of graphene.
Wherein, the heat preservation layer 33 is made of alkali superfine glass wool.
The cable body 1 comprises a wire, an electromagnetic shielding layer 11 is wrapped outside the wire, and the electromagnetic shielding layer 11 is of a metal net structure; the wire comprises a first conductor 121 and a second conductor 122, the first conductor 121 is positioned at the upper end of the second conductor 122, a first filling rope 131 attached to the first conductor 121 and the second conductor 122 is arranged on the left side of the first conductor 121 and the second conductor 122, a second filling rope 132 attached to the first conductor 121 and the second conductor 122 is arranged on the right side of the first conductor and the second conductor 122, and the wire is filled with a non-wetting filler 14.
Wherein the first and second fill cords 131 and 132 are each made of polypropylene.
Wherein the non-wetting filler 14 comprises glass fibers and polypropylene.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Claims (8)
1. A special heat tracing electric power cable, comprising a cable body (1), characterized in that: the cable body (1) is sleeved with a heat-insulating outer sheath (2), an inner cavity is formed in the heat-insulating outer sheath (2), the cable body (1) is positioned in the inner cavity, one or more heat conduction pipes (3) attached to the cable body (1) are arranged in the inner cavity, a core wire (61) formed by twisting a plurality of copper wires is arranged in the heat conduction pipes (3) in a penetrating mode, the cable body (1) is bound and fixed with the heat conduction pipes (3) through heat preservation adhesive tapes (41), and the heat preservation adhesive tapes (41) are aluminum foil adhesive tapes and are 0.13 mm thick;
a temperature sensor (51) is arranged in the heat-insulating outer sheath (2), the real-time temperature in the heat-insulating outer sheath (2) is obtained through the temperature sensor (51), the temperature sensor (51) is connected to a temperature controller (52) through a wire, the temperature controller (52) is used for realizing the visualization and adjustment of a temperature value, the temperature controller (52) is connected to a controller (53) through a wire, the controller (53) is connected between a power supply (54) and a core wire (61) to play a role in adjusting the current, and the temperature sensor (51), the temperature controller (52) and the controller (53) are all powered by the power supply (54);
a plurality of heating belts (31) are regularly arranged in the heat conduction pipe (3), the heating belts (31) are arranged at intervals, and the core wires (61) penetrate through the heating belts (31) and are connected in series; each heating belt (31) comprises a heating block (311) positioned at the central position, the heating block (311) can generate heat after being electrified, a heat conduction layer (312) with an enlarged area for diffusing the heat generated by the heating block (311) is wrapped on the periphery of the heating block (311), a metal frame (313) which has a fixed shape and can conduct heat is wrapped on the heat conduction layer (312), and a high-temperature-resistant filling medium (32) is filled in the heat conduction pipe (3);
the heat conducting pipe (3) is internally provided with a heat preservation layer (33) wrapped outside the heating belt (31), a metal net (34) capable of conducting heat is wrapped outside the heat preservation layer (33), and the metal net (34) is clung to the cable body (1).
2. A special heat trace power cable as claimed in claim 1, wherein: a heat conduction connecting bridge (35) is arranged between the metal frame (313) and the heat preservation layer (33), the heat conduction connecting bridge (35) is provided with a bottom edge (351) attached to the upper end/lower end of the metal frame (313) and a top edge (352) attached to the heat preservation layer (33), and the top edges (352) adjacent to the heat conduction connecting bridge (35) are connected, so that heat released by the metal frame (313) is uniformly exchanged onto the heat preservation layer (33), and the occurrence of local temperature imbalance is avoided.
3. A special heat trace power cable as claimed in claim 1, wherein: the heating block (311) is made of PTC conductive material.
4. A special heat trace power cable as claimed in claim 2, wherein: the heat conduction layer (312) and the heat conduction connecting bridge (35) are both made of graphene.
5. A special heat trace power cable as claimed in claim 1, wherein: the heat preservation layer (33) is made of alkali superfine glass wool.
6. A special heat trace power cable as claimed in claim 1, wherein: the cable body (1) comprises a wire, an electromagnetic shielding layer (11) is wrapped outside the wire, and the electromagnetic shielding layer (11) is of a metal net structure; the lead wire comprises a first conductor (121) and a second conductor (122), wherein the first conductor (121) is positioned at the upper end of the second conductor (122), a first filling rope (131) which is attached to the first conductor (121) and the second conductor (122) is arranged on the left side of the first conductor and the second conductor (122), a second filling rope (132) which is attached to the first conductor (121) and the second conductor (122) is arranged on the right side of the first conductor and the second conductor, and a non-wet filler (14) is filled in the lead wire.
7. A special heat trace power cable as claimed in claim 6, wherein: the first filling rope (131) and the second filling rope (132) are made of polypropylene.
8. A special heat trace power cable as claimed in claim 6, wherein: the non-wetting filler (14) comprises glass fibers and polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111278010.8A CN113950174B (en) | 2021-10-30 | 2021-10-30 | Special heat tracing power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111278010.8A CN113950174B (en) | 2021-10-30 | 2021-10-30 | Special heat tracing power cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113950174A CN113950174A (en) | 2022-01-18 |
| CN113950174B true CN113950174B (en) | 2023-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111278010.8A Active CN113950174B (en) | 2021-10-30 | 2021-10-30 | Special heat tracing power cable |
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| Country | Link |
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| CN (1) | CN113950174B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114334253A (en) * | 2022-01-25 | 2022-04-12 | 远东电缆有限公司 | Heat tracing cable and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2237918Y (en) * | 1995-06-02 | 1996-10-16 | 程崇钧 | Temp-autocontrol sucker rod cable |
| CN108447611A (en) * | 2018-04-26 | 2018-08-24 | 嘉兴奥亿普数据电缆有限公司 | A kind of safety cable of cooling protection |
| CN207800230U (en) * | 2017-12-20 | 2018-08-31 | 西部电缆股份有限公司 | A kind of power cable with heat dissipation performance |
| CN209747198U (en) * | 2019-03-29 | 2019-12-06 | 上海新时达线缆科技有限公司 | Cable with improved insulation |
| CN112351531A (en) * | 2020-11-09 | 2021-02-09 | 安邦电气股份有限公司 | Combined self-temperature-limiting electric tracing band |
| CN112469154A (en) * | 2020-12-17 | 2021-03-09 | 安邦电气股份有限公司 | Skin effect heat tracing cable |
| CN112885523A (en) * | 2020-12-30 | 2021-06-01 | 翔宜电子器材(东台)有限公司 | High and low temperature resistant flame-retardant cable |
| CN113573431A (en) * | 2021-08-03 | 2021-10-29 | 安邦电气股份有限公司 | Electric tracing band for explosion-proof place |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200256160A1 (en) * | 2013-04-12 | 2020-08-13 | Pablo Javier INVIERNO | Heating cable for extraction pipes of viscous hydrocarbons or paraffinic in conventional wells and type tight wells, vertical or directional, with flooded annular in casual or permanent form, suitable for use between low and high fluid pressures ranges |
| CN215577831U (en) * | 2021-06-09 | 2022-01-18 | 常丰线缆有限公司 | Cold-resistant cable |
-
2021
- 2021-10-30 CN CN202111278010.8A patent/CN113950174B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2237918Y (en) * | 1995-06-02 | 1996-10-16 | 程崇钧 | Temp-autocontrol sucker rod cable |
| CN207800230U (en) * | 2017-12-20 | 2018-08-31 | 西部电缆股份有限公司 | A kind of power cable with heat dissipation performance |
| CN108447611A (en) * | 2018-04-26 | 2018-08-24 | 嘉兴奥亿普数据电缆有限公司 | A kind of safety cable of cooling protection |
| CN209747198U (en) * | 2019-03-29 | 2019-12-06 | 上海新时达线缆科技有限公司 | Cable with improved insulation |
| CN112351531A (en) * | 2020-11-09 | 2021-02-09 | 安邦电气股份有限公司 | Combined self-temperature-limiting electric tracing band |
| CN112469154A (en) * | 2020-12-17 | 2021-03-09 | 安邦电气股份有限公司 | Skin effect heat tracing cable |
| CN112885523A (en) * | 2020-12-30 | 2021-06-01 | 翔宜电子器材(东台)有限公司 | High and low temperature resistant flame-retardant cable |
| CN113573431A (en) * | 2021-08-03 | 2021-10-29 | 安邦电气股份有限公司 | Electric tracing band for explosion-proof place |
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| Publication number | Publication date |
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| CN113950174A (en) | 2022-01-18 |
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