CN113840407A - High-temperature-resistant insulating AHT armored electric tracing band - Google Patents
High-temperature-resistant insulating AHT armored electric tracing band Download PDFInfo
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- CN113840407A CN113840407A CN202111104205.0A CN202111104205A CN113840407A CN 113840407 A CN113840407 A CN 113840407A CN 202111104205 A CN202111104205 A CN 202111104205A CN 113840407 A CN113840407 A CN 113840407A
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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
- H05B3/565—Heating cables flat 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
- H01B7/17—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
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/228—Metal braid
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Abstract
本发明涉及一种耐高温绝缘型AHT铠装电伴热带，包括电伴热带本体，电伴热带本体包括第一金属导线和第二金属导线，第一金属导线和第二金属导线外侧套设有一导电塑料层，导电塑料层为PCT塑料制作的，导电塑料层将第一金属导线和第二金属导线隔离，导电塑料层外侧设置有绝缘层；绝缘层外侧设置有网状金属丝层，网状金属丝层外侧套设有护套层，护套层的一侧沿长度方向设置有多个缺口；金属丝层和护套层之间设置有保温导热层，保温导热层包括保温片和导热片，保温片的一端与导热片的一端连接，保温片的另一端与导热片的另一端连接，导热片对应防护套设置有缺口的一侧设置，保温片对应防护套的另一侧设置。该电伴热带，耐高温性能好，节约了能源。
The invention relates to a high-temperature-resistant insulating AHT armored electric heating cable, comprising an electric heating cable body, the electric heating cable body includes a first metal wire and a second metal wire, and the outer side of the first metal wire and the second metal wire is sleeved with a The conductive plastic layer is made of PCT plastic, the conductive plastic layer isolates the first metal wire and the second metal wire, and an insulating layer is arranged outside the conductive plastic layer; A sheath layer is provided on the outer side of the metal wire layer, and one side of the sheath layer is provided with a plurality of notches along the length direction; a thermal insulation and heat conduction layer is arranged between the metal wire layer and the sheath layer, and the thermal insulation and thermal conduction layer includes a thermal insulation sheet and a thermal conduction sheet One end of the thermal insulation sheet is connected to one end of the thermal conductive sheet, and the other end of the thermal insulation sheet is connected to the other end of the thermal conductive sheet. The electric heating cable has good high temperature resistance and saves energy.
Description
Technical Field
The invention belongs to the technical field of electric tracing bands, and particularly relates to a high-temperature-resistant insulating type AHT armored electric tracing band.
Background
The electric tracing band is composed of conductive polymer, two parallel metal wires and an insulating protective layer. The conductive polymer has high positive temperature coefficient characteristic, is connected in parallel, can automatically adjust output power along with the temperature change of a heated system, automatically limits the heating temperature, can be arbitrarily shortened or used for a long time within a certain range, and allows multiple cross overlapping without the worry of high temperature hot spots and burning.
The existing electric tracing band is generally installed in a way of being tightly attached to a pipeline or other heat insulation base bodies, in the using process, only one surface of the tracing band exchanges heat with the pipeline or other heat insulation base bodies, the other surface of the tracing band emits heat to the outside and hardly exchanges heat with the pipeline or other heat insulation base bodies, so that the waste of energy is caused, and people are constantly researching on how to solve the problem.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a high-temperature-resistant insulating AHT armored electric tracing band to solve the technical problems.
In order to achieve the above object, the present invention provides a technical solution as follows:
a high-temperature-resistant insulating AHT armored electric tracing band comprises an electric tracing band body, wherein the electric tracing band body comprises a first metal wire and a second metal wire, a conductive plastic layer is sleeved on the outer sides of the first metal wire and the second metal wire and made of PCT plastic, the first metal wire and the second metal wire are isolated by the conductive plastic layer, and an insulating layer is arranged on the outer side of the conductive plastic layer; a net-shaped metal wire layer is arranged on the outer side of the insulating layer, a sheath layer is sleeved on the outer side of the net-shaped metal wire layer, and a plurality of notches are formed in one side of the sheath layer along the length direction; the utility model discloses a heat preservation heat-conducting layer, including the lag, the wire layer with be provided with the heat preservation heat-conducting layer between the restrictive coating, the heat preservation heat-conducting layer includes heat preservation piece and conducting strip, the one end of heat preservation piece is connected with the one end of conducting strip, the other end of heat preservation piece is connected with the other end of conducting strip, the conducting strip corresponds the lag is provided with one side setting of breach, the heat preservation piece corresponds the opposite side setting of lag.
Preferably, a spacing strip is formed between adjacent gaps, and the relationship between the length of the gap and the width of the spacing strip satisfies the following formula
L≥15M
Wherein, L is the length of the gap, and M is the width of the isolating strip.
Preferably, the insulating layer is made of one or more materials selected from modified polyolefin, flame-retardant polyolefin, fluorine-containing polyolefin and perfluorinated material.
Preferably, the sheath layer is made of one or more of modified polyolefin, flame-retardant polyolefin and perfluoro material.
Preferably, the electric tracing band body is detachably connected with a fixing piece, and the fixing piece comprises a first fixing piece and a second fixing piece; first fixing parts are arranged on two sides of the first fixing part, first fixing holes are formed in the first fixing parts, a first groove is formed in the first fixing part and located between the first fixing holes in the two sides, and fixing grooves are formed in the first groove; second fixing parts are arranged on two sides of the second fixing part, second fixing holes are formed in the second fixing parts, and second grooves are formed in the positions, located between the second fixing holes on the two sides, of the second fixing part; the first fixing piece and the second fixing piece can be fixed into a whole through the first fixing hole and the second fixing hole on two sides, and in the state, the first groove and the second groove form a through hole; a metal wire connecting piece is arranged in the through hole and comprises an outer frame, a partition plate is arranged in the outer frame, and wiring pieces are fixed on two sides of the partition plate; the wiring piece comprises two symmetrically arranged conducting strips, the conducting strips are in a major arc shape, and two ends of the two conducting strips are correspondingly connected, so that two mutually communicated spaces are formed inside the connecting piece; a plurality of elastic sheets are circumferentially arranged on the conductive sheet and comprise a connecting section and a fixing section, one end of the connecting section is connected with the conductive sheet, and the other end of the connecting section is connected with the fixing section; the connecting section and the fixed section are inclined relative to the conducting plate, the distance from one end of the elastic sheet connected with the conducting plate to the arc center of the conducting plate is greater than the distance from the other end of the elastic sheet connected with the conducting plate to the arc center of the conducting plate, and the included angle of the connecting section relative to the plane of the conducting plate is smaller than the included angle of the fixed section relative to the plane of the conducting plate; in each wiring piece, the heights of the elastic sheets on the two conducting sheets are different; a cover plate is arranged at one end of the outer frame, connecting holes are formed in the cover plate and correspond to the connecting pieces on the two sides of the partition plate, the shape of each connecting hole is the same as that of each connecting piece, so that the connecting holes form two symmetrical arc-shaped threaded holes, screws are connected to the threaded holes in a threaded mode, and the height difference of the conducting strips is larger than the thickness of the screws; and the outer frame is provided with a fixed block matched with the fixed groove.
Preferably, the first screw and the second screw are screw screws.
Preferably, the outer frame and the partition plate are made of insulating materials or made of metal materials, and the insulating layers are arranged on the rear surfaces of the outer frame and the partition plate; the conducting strips and the elastic sheets are made of conducting materials.
Preferably, the conducting strips and the elastic pieces are made of metal materials.
The high-temperature-resistant insulating AHT armored electric tracing band provided by the invention has the following advantages:
1. the mesh-shaped metal wire layer and the sheath layer are arranged outside the insulating layer, so that the strength of the electric tracing band is increased, the metal wire mesh can form interference of shielding signals and a magnetic field and prevent the interference of the tracing band with external signals and the magnetic field during working, and the insulating layer and the sheath layer use improved polyolefin and have good high-temperature resistance;
2. the heat-insulating and heat-conducting layer is arranged between the metal wire layer and the sheath layer, when the heat-insulating and heat-conducting plate is used, one surface of the heat-tracing band, which is not in contact with the pipeline or other heat-insulating base bodies, is in contact with the pipeline or other heat-insulating base bodies, so that the heat dissipation amount is greatly reduced, the heat exchange between the heat-tracing band and the outside is mainly concentrated on the pipeline or other heat-insulating base bodies, and the energy is saved.
Drawings
FIG. 1 is one of the schematic structural views of the high temperature resistant insulated AHT armor electrical trace ribbon of the present invention;
FIG. 2 is a schematic view of the cross-sectional structure A-A of FIG. 1;
FIG. 3 is a schematic structural view of a high temperature resistant insulated AHT armor electrical trace ribbon of the present invention;
FIG. 4 is a cross-sectional view of the fastener of FIG. 3;
FIG. 5 is a schematic cross-sectional view of the first fixing member;
FIG. 6 is a schematic cross-sectional view of a second fastener;
FIG. 7 is a cross-sectional view of a conductive metal connector;
FIG. 8 is a top view of a metal conductive connector;
FIG. 9 is a schematic view of the cross-sectional structure B-B of FIG. 8;
FIG. 10 is a schematic view of the screw-removed structure of FIG. 8;
reference numerals in the figures; the heat insulation structure comprises a first metal wire 1, a second metal wire 2, a conductive plastic layer 3, an insulating layer 4, a reticular metal wire layer 5, a sheath layer 6, an electric tracing band body 7, a fixing part 8, a heat insulation and conduction layer 9, a heat insulation sheet 91, a heat conduction sheet 92, a first fixing part 10, a second fixing part 11, a first fixing part 12, a first fixing hole 13, a first groove 14, a second fixing part 15, a second fixing hole 16, a second groove 17, a fixing groove 18, an outer frame 19, a partition plate 20, a conductive sheet 21, an elastic sheet 22, a connecting section 23, a fixing section 24, a cover plate 25, a screw 26, a threaded hole 27, a fixing block 29, a notch 30 and a spacing strip 31.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an embodiment 1 of a high-temperature-resistant insulating AHT armored electric tracing band, which comprises an electric tracing band body, and is characterized in that the electric tracing band body comprises a first metal lead 1 and a second metal lead 2, in the embodiment, the first metal lead and the second metal lead use copper leads, a conductive plastic layer 3 is sleeved outside the first metal lead and the second metal lead, in the embodiment, the conductive plastic layer is preferably made of PCT plastic (also called as PTC conductive plastic), the first metal lead and the second metal lead are positioned at two ends of the conductive plastic layer when being manufactured, thus, the middle part of the conductive plastic layer separates the first metal lead and the second metal lead, and an insulating layer 4 is arranged outside the conductive plastic layer; the insulating layer is generally made of one or more materials selected from modified polyolefin, flame-retardant polyolefin, fluorine-containing polyolefin and a perfluorinated material, the net-shaped metal wire layer can be made of aluminum magnesium alloy wires or tinned copper wires, the covering density is 80%, and the sheath layer is generally made of one or more materials selected from modified polyolefin, flame-retardant polyolefin and a perfluorinated material; a plurality of notches 30 are formed in one side of the sheath layer along the length direction; a heat insulation and conduction layer 9 is arranged between the metal wire layer and the sheath layer, the heat insulation and conduction layer comprises heat insulation sheets 91 and heat conduction sheets 92, the heat insulation sheets are made of materials with good heat insulation performance, such as aerogel nanometer heat insulation materials, heat insulation cotton or sponge materials, and the heat conduction sheets are made of heat conduction materials, such as heat conduction silica gel sheets; one end of the heat preservation sheet is connected with one end of the heat conduction sheet, the other end of the heat preservation sheet is connected with the other end of the heat conduction sheet, the heat conduction sheet corresponds to one side of the protective sleeve, which is provided with the notch, and the heat preservation sheet corresponds to the other side of the protective sleeve.
The high-temperature-resistant insulating AHT armored electric tracing band has the following advantages:
1. the mesh-shaped metal wire layer and the sheath layer are arranged outside the insulating layer, so that the strength of the electric tracing band is increased, the metal wire mesh can form interference of shielding signals and a magnetic field and prevent the interference of the tracing band with external signals and the magnetic field during working, and the insulating layer and the sheath layer use improved polyolefin and have good high-temperature resistance;
2. the heat-insulating and heat-conducting layer is arranged between the metal wire layer and the sheath layer, when the heat-insulating and heat-conducting plate is used, one surface of the heat-tracing band, which is not in contact with the pipeline or other heat-insulating base bodies, is in contact with the pipeline or other heat-insulating base bodies, so that the heat dissipation amount is greatly reduced, the heat exchange between the heat-tracing band and the outside is mainly concentrated on the pipeline or other heat-insulating base bodies, and the energy is saved.
In this embodiment, form division bar 31 between the adjacent breach, the division bar mainly used connects the breach, prevents that the restrictive coating from breaking off in order to lose the guard action in breach department, generally the length L of breach and the relation of the width M of division bar satisfy the formula: l is more than or equal to 15M.
The high-temperature-resistant insulating AHT armored electric tracing band has the following advantages:
1. the mounting can enough be used for fixing the electric tracing band body can be used for connecting two or more tracing band bodies again, convenient to use: when the heat tracing band body is fixed, only the first fixing piece and the second fixing piece are used, bolts, screws and the like are matched with corresponding fixing holes to fix the heat tracing band body on a pipeline or other heat-insulating base bodies and press the heat tracing band body, so that the heat tracing band body passes through the corresponding groove;
when the two heat tracing bands are connected, the connecting ends of the two heat tracing bands are stripped to expose the first metal lead and the second metal lead, the metal lead connecting piece is clamped in the through hole, then the first fixing piece and the second fixing piece are pinched, the first metal lead and the second metal lead exposed by one of the heat tracing bands are inserted into a pair of conducting strips through one end of the outer frame, which is not provided with the cover plate, and penetrate out through the threaded hole, then the end parts of the two metal leads are bent or twisted for a circle to form a blocking part, the metal leads are pulled down to deform the conducting strips, the fixing sections are gradually horizontal, the connecting sections are gradually vertically close to the leads, corresponding screws are screwed on corresponding threaded holes to abut against the blocking part to prevent the blocking part from rebounding, and thus the heat tracing bands are connected; similarly, the first metal wire and the second metal wire exposed from the other heat tracing band are inserted into the other pair of conducting strips through one end of the outer frame, which is not provided with the cover plate, and penetrate through the threaded holes, then the end parts of the two metal wires are bent or twisted for a circle to form a blocking part, the metal wires are pulled down to enable the conducting strips to be deformed, the fixing sections are gradually leveled, the connecting sections are gradually and vertically close to the wires, corresponding screws are screwed on the corresponding threaded holes to enable the blocking parts to be propped against, and therefore the other heat tracing band can not be rebounded, and therefore the other heat tracing band is well connected; the wires of the two heat tracing bands form an electric connection structure; and finally, fixing the fixing piece on the pipeline or other heat-insulating base bodies by using bolts, screws and the like matched with corresponding fixing holes, wherein metal wires corresponding to the elastic pieces with lower heights need to be connected firstly.
2. The fixing piece is ingenious in design, the elastic piece is designed in a two-section mode, so that when the elastic piece is stressed, one section of the elastic piece gradually moves close to the horizontal direction, and the other section of the elastic piece gradually moves vertically, so that the connecting section can be finally attached to the metal wire, the contact area with the metal wire is large, and the electric conduction effect is good; the elastic sheet is circumferentially designed, so that the contact with the metal wire is more uniform, the force perpendicular to the elastic sheet is not needed for limiting during limiting, and the metal wire is not damaged; when the connection relation of the two heat tracing bands is removed, the corresponding screws can be screwed off, the heat tracing bands can be conveniently taken down by cutting off the blocking parts of the metal leads, and the heat tracing bands and the fixing piece can be repeatedly used; the conducting strip is designed in an approximate 8 shape, the overall thickness of the fixing piece is reduced, and the threading of the metal conducting wire cannot be influenced when the two heat tracing bands are connected. The height of each pair of conducting strips is generally different, so that standard parts can be manufactured conveniently, and the conducting strips can be connected into a whole through connecting sheets. Certainly, three or more arc-shaped elastic sheets can be arranged to realize the connection of three or more electric tracing bands, as a deformation, the four elastic sheets can be arranged into two groups which are symmetrical, specifically, in each wiring piece, the elastic sheets on the two conducting sheets are positioned at two sides of the conducting sheets, correspondingly, two ends of the outer frame are provided with cover plates, one of the cover plates covers a pair of conducting sheets at two sides of the partition plate, and thus, at the same end, the other pair of conducting sheets is not covered and can be used for penetrating metal wires; another apron covers another pair of conducting strip of baffle both sides, and the screw hole on the apron sets up to circular can. When the structure is used, two pairs of metal wires can be fixed after being threaded from two ends, so that the structure is convenient to use;
as an implementation mode, only one group of conducting strips can be arranged, the conducting strips are arranged to be circular, one end of the outer frame is provided with the cover plate and the threaded hole, and therefore when the elastic piece is used, two lines penetrate through one conducting strip.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A high-temperature-resistant insulating AHT armored electric tracing band comprises an electric tracing band body (7), wherein the electric tracing band body comprises a first metal wire (1) and a second metal wire (2), a conductive plastic layer (3) is sleeved on the outer sides of the first metal wire and the second metal wire, the conductive plastic layer is made of PCT plastic, the conductive plastic layer isolates the first metal wire from the second metal wire, and an insulating layer (4) is arranged on the outer side of the conductive plastic layer; it is characterized in that the preparation method is characterized in that,
a reticular metal wire layer (5) is arranged on the outer side of the insulating layer, a sheath layer (6) is sleeved on the outer side of the reticular metal wire layer, and a plurality of notches (30) are formed in one side of the sheath layer along the length direction;
the metal wire layer with be provided with heat preservation heat-conducting layer (9) between the restrictive coating, the heat preservation heat-conducting layer includes heat preservation piece (91) and conducting strip (92), the one end of heat preservation piece is connected with the one end of conducting strip, the other end of heat preservation piece is connected with the other end of conducting strip, the conducting strip corresponds the lag is provided with the one side setting of breach, the heat preservation piece corresponds the opposite side setting of lag.
2. The AHT armor electrical tracing band of claim 1, wherein,
a spacing strip (31) is formed between adjacent gaps, and the relationship between the length of the gap and the width of the spacing strip satisfies the following formula
L≥15M
Wherein, L is the length of the gap, and M is the width of the isolating strip.
3. The AHT armor electrical tracing band of claim 1, wherein said insulation layer is made of one or more of modified polyolefins, flame-retardant polyolefins, fluorine-containing polyolefins, and perfluorinated materials.
4. The AHT armor electrical tracing band of claim 1, wherein said jacketing layer is made of one or more of modified polyolefin, flame retardant polyolefin, and perfluoro material.
5. The AHT armored electric trace according to claim 1, wherein the body of the electric trace is detachably connected with a fixing member (8) comprising a first fixing member (10) and a second fixing member (11);
first fixing parts (12) are arranged on two sides of the first fixing part, first fixing holes (13) are formed in the first fixing parts, a first groove (14) is formed in the first fixing part between the first fixing holes on the two sides, and a fixing groove (18) is formed in the first groove;
second fixing parts (15) are arranged on two sides of the second fixing part, second fixing holes (16) are formed in the second fixing parts, and second grooves (17) are formed in the positions, located between the second fixing holes on the two sides, of the second fixing part;
the first fixing piece and the second fixing piece can be fixed into a whole through the first fixing hole and the second fixing hole on two sides, and in the state, the first groove and the second groove form a through hole;
a metal wire connecting piece is arranged in the through hole and comprises an outer frame (19), a partition plate (20) is arranged in the outer frame, and wiring pieces are fixed on two sides of the partition plate;
the wiring piece comprises two symmetrically arranged conducting strips (21), the conducting strips are in a major arc shape, and two ends of the two conducting strips are correspondingly connected, so that two mutually communicated spaces are formed inside the connecting piece; a plurality of elastic sheets (22) are circumferentially arranged on the conductive sheet and comprise a connecting section (23) and a fixing section (24), one end of the connecting section is connected with the conductive sheet, and the other end of the connecting section is connected with the fixing section; the connecting section and the fixed section are inclined relative to the conducting plate, the distance from one end of the elastic sheet connected with the conducting plate to the arc center of the conducting plate is greater than the distance from the other end of the elastic sheet connected with the conducting plate to the arc center of the conducting plate, and the included angle of the connecting section relative to the plane of the conducting plate is smaller than the included angle of the fixed section relative to the plane of the conducting plate;
in each wiring piece, the heights of the elastic sheets on the two conducting sheets are different;
a cover plate (25) is arranged at one end of the outer frame, connecting holes are formed in the cover plate corresponding to the connecting pieces on the two sides of the partition plate, the shapes of the connecting holes are the same as those of the connecting pieces, so that two symmetrical arc-shaped threaded holes (27) are formed in the connecting holes, screws (26) are connected to the threaded holes in a threaded mode, and the height difference of the conducting strips is larger than the thickness of the screws;
and the outer frame is provided with a fixed block (29) matched with the fixed groove.
6. The AHT armor electrical trace of claim 5, wherein said first and second screws are machine-meter screws.
7. The AHT armored electrical tracing band of claim 5, wherein said outer frame and said separators are made of insulating material or made of metal material, and the back surface is provided with an insulating layer;
the conducting strips and the elastic sheets are made of conducting materials.
8. The AHT armor electrical tracing band of claim 7, wherein,
the conducting strips and the elastic pieces are made of metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111104205.0A CN113840407B (en) | 2021-09-22 | 2021-09-22 | A high temperature resistant insulation type AHT armored electric heating cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111104205.0A CN113840407B (en) | 2021-09-22 | 2021-09-22 | A high temperature resistant insulation type AHT armored electric heating cable |
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| Publication Number | Publication Date |
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| CN113840407A true CN113840407A (en) | 2021-12-24 |
| CN113840407B CN113840407B (en) | 2024-07-30 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633611A (en) * | 2016-02-29 | 2016-06-01 | 成都科创谷科技有限公司 | Detachable jointing clamp used for computer communication network |
| CN107182141A (en) * | 2017-07-04 | 2017-09-19 | 南京国电南自电网自动化有限公司 | A kind of site protective relaying device suitable for extreme low temperature environment |
| CN210137461U (en) * | 2019-06-21 | 2020-03-10 | 安徽宥宇电热器材有限公司 | A self-limiting temperature electric heating cable with small heat loss |
| CN211930898U (en) * | 2020-04-28 | 2020-11-13 | 浙江万森电热设备股份有限公司 | Automatic control temperature electric tracing band convenient to installation |
-
2021
- 2021-09-22 CN CN202111104205.0A patent/CN113840407B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633611A (en) * | 2016-02-29 | 2016-06-01 | 成都科创谷科技有限公司 | Detachable jointing clamp used for computer communication network |
| CN107182141A (en) * | 2017-07-04 | 2017-09-19 | 南京国电南自电网自动化有限公司 | A kind of site protective relaying device suitable for extreme low temperature environment |
| CN210137461U (en) * | 2019-06-21 | 2020-03-10 | 安徽宥宇电热器材有限公司 | A self-limiting temperature electric heating cable with small heat loss |
| CN211930898U (en) * | 2020-04-28 | 2020-11-13 | 浙江万森电热设备股份有限公司 | Automatic control temperature electric tracing band convenient to installation |
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| CN113840407B (en) | 2024-07-30 |
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