CN107801260B - Heat tracing belt and shell-and-tube heat exchanger - Google Patents
Heat tracing belt and shell-and-tube heat exchanger Download PDFInfo
- Publication number
- CN107801260B CN107801260B CN201610806107.4A CN201610806107A CN107801260B CN 107801260 B CN107801260 B CN 107801260B CN 201610806107 A CN201610806107 A CN 201610806107A CN 107801260 B CN107801260 B CN 107801260B
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- China
- Prior art keywords
- heat
- heat tracing
- conducting plate
- shell
- flexible
- 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.)
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Links
- 238000010438 heat treatment Methods 0.000 claims description 24
- 230000007935 neutral effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000013589 supplement Substances 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
- H05B3/565—Heating cables flat cables
-
- 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
Landscapes
- Resistance Heating (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a heat tracing band and a shell-and-tube heat exchanger. The shell-and-tube heat exchanger comprises a plurality of shell tubes and heat tracing bands wrapped on each shell tube, wherein the heat tracing bands are the heat tracing bands provided by the invention. Because the flexible heat conducting plate is uniformly covered on the heat tracing equipment, the heat tracing equipment is uniformly heated, and the detection temperature of the heat tracing equipment is more accurate.
Description
Technical Field
The invention relates to the technical field of heat tracing bands, in particular to a heat tracing band and a shell-and-tube heat exchanger.
Background
The electric tracing is to convert electric energy into heat energy by using a heat tracing belt (also called an electric heating belt), and supplement the heat lost by heat tracing equipment through a heat insulation material through direct or indirect heat exchange. The electric heat tracing has the advantages of high heat efficiency, energy conservation, simple design, convenient construction and installation, no pollution, long service life, capability of realizing remote control and automatic control and the like, and is widely used for heat tracing and heat preservation in industries such as air conditioners, industrial pipelines, ships and the like.
Currently, the heat trace belt is typically a heating cable composed of a metal wire, a polymeric PTC (i.e., positive temperature coefficient) material, and a single layer of flame retardant jacket. In addition, the heat tracing band is mostly fixed on the heat tracing equipment (such as an air conditioner shell tube) in a multi-winding mode so as to heat the heat tracing equipment and prevent the heat tracing equipment from frost cracking at low temperature.
However, the above winding manner makes it difficult to uniformly distribute the heat tracing band on the heat tracing device, so that the heat tracing device is heated unevenly, and the detected temperature of the heat tracing device is inaccurate. Moreover, each heating element is independently connected with a power supply line (generally including a ground line, a fire line and a zero line), so that a plurality of wound heat tracing bands can cause excessive wiring, occupy a lot of wiring space and wiring positions, and bring great inconvenience to production and design.
Disclosure of Invention
Therefore, the invention aims to overcome the defect that the existing heat tracing band is difficult to uniformly wind and distribute on the heat tracing equipment.
To this end, the invention provides a heat trace belt comprising a flexible heat conducting plate and a plurality of heating elements which are encapsulated in the flexible heat conducting plate and are electrically connected.
Preferably, the flexible heat conducting plate is formed by bonding at least two flexible heat conducting layers, and each heating element is arranged between any two adjacent flexible heat conducting layers.
Preferably, the heat tracing band further comprises a power supply line which is positioned inside the flexible heat conducting plate and extends out to be connected to a power supply, and each heating element is electrically connected with the power supply line positioned inside the flexible heat conducting plate.
Preferably, the power supply line is provided with a plurality of parallel branches, and each parallel branch is provided with a plurality of heating elements connected in series.
Preferably, the power supply line comprises a neutral line and a live line, and the parallel branch connection is arranged between the neutral line and the live line.
Preferably, the power supply line further includes a ground line connected to each of the heating elements.
Preferably, each adjacent heating element is distributed in the flexible heat-conducting plate at the same pitch.
Preferably, detachable connecting devices for fixing the heat tracing band on the heat tracing equipment are arranged at the head end and the tail end of the flexible heat conducting plate.
Preferably, the detachable connection device is a fixed buckle with adjustable tightness.
The invention also provides a shell-and-tube heat exchanger, which comprises a plurality of shell tubes and heat tracing bands wrapped on each shell tube, wherein the heat tracing bands are the heat tracing bands provided by the invention.
The technical scheme of the invention has the following advantages:
The heat tracing band provided by the invention comprises the flexible heat conducting plate and a plurality of heating elements, and the flexible heat conducting plate is uniformly covered on the heat tracing equipment, so that the heat tracing equipment is heated uniformly, and the detection temperature of the heat tracing equipment is more accurate.
The heat tracing belt provided by the invention further comprises the power supply line which is positioned in the flexible heat conducting plate and extends out to be connected to a power supply, and the heating elements are electrically connected with the power supply line positioned in the flexible heat conducting plate, so that the heating elements share the power supply line, each heating element in the prior art is prevented from being independently connected with the power supply line, the external wiring is reduced, the production efficiency is improved, and the error rate is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a heat tracing band after being unfolded according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a heat tracing band after installation according to an embodiment of the present invention;
Fig. 3 is a schematic diagram of a connection structure of each heating element in the heat tracing band according to the embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1 to 3, the heat tracing band provided in this embodiment includes a flexible heat conducting plate 1, a plurality of heating elements 2 encapsulated in the flexible heat conducting plate 1 and electrically connected to each other, power supply lines located inside the flexible heat conducting plate 1 and extending to be connected to a power supply, each heating element 2 being electrically connected to the power supply lines located inside the flexible heat conducting plate 1, and detachable connection devices 6 disposed at the front and rear ends of the flexible heat conducting plate 1 for fixing the heat tracing band package on a heat tracing device. The flexible heat conducting plate 1 is formed by bonding at least two flexible heat conducting layers, and each heating element 2 is arranged between any two adjacent flexible heat conducting layers.
The heat tracing band has the capability of independently regulating the output power in any micro section (namely the heating element 2), and when the heat tracing device needs to be heated, the power supply of the heat tracing band is connected to start heating. The heat tracing band resistors are uniformly distributed on the whole heat tracing equipment, so that heat conduction is uniform, the temperature detected by the temperature sensing bulb on the heat tracing equipment is very close to the temperature of the whole heat tracing equipment, feedback is timely and accurate, and the heated heat tracing equipment can keep stable in temperature.
Meanwhile, as the heat tracing has only three external wires, the production wire arrangement efficiency is high and is easy to distinguish, the working efficiency is improved, and meanwhile, the error rate is reduced. The reduction of external wiring, saving wiring position and wire rod simultaneously, has the efficiency of reducing cost to production.
As shown in fig. 2, the detachable connection device 6 is a fixed buckle with adjustable tightness. The fixing clasp comprises a fixing clasp and a fixing hook, the detachable connecting device 6 shown in fig. 2 comprises two groups of fixing clasp and fixing hook, and the fixing clasp is provided with 5 clasp holes. The fixed buckle with adjustable tightness is used for fastening, repeated work of a plurality of windings is avoided, and the working time is effectively shortened.
As shown in fig. 3, the power supply line comprises a zero line 3, a live line 4 and a ground line 5, wherein the zero line 3 and the live line 4 are provided with 7 parallel branches, and each parallel branch is provided with 4 heating elements 2 connected in series.
The heat tracing belt can be applied to a shell-and-tube heat exchanger, the shell-and-tube heat exchanger comprises a plurality of shell tubes, the heat tracing belt is wrapped on each shell tube and fastened by an adjustable elastic fixing buckle.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (8)
1. A heat tracing band, characterized by comprising a flexible heat conducting plate (1) and a plurality of heating elements (2) which are encapsulated in the flexible heat conducting plate (1) and are electrically connected;
The heat tracing belt further comprises a power supply line which is positioned in the flexible heat conducting plate (1) and extends out to be connected to a power supply, a plurality of parallel branches are arranged on the power supply line, and each parallel branch is provided with a plurality of heating elements (2) which are connected in series; the heating element (2) can independently adjust the output power.
2. Heat trace according to claim 1, characterized in that the flexible heat conducting plate (1) is formed by bonding at least two flexible heat conducting layers, each heating element (2) being arranged between any adjacent flexible heat conducting layers.
3. Heat trace according to claim 1, characterized in that the supply line comprises a neutral wire (3) and a live wire (4), the parallel branch connection being arranged between the neutral wire (3) and the live wire (4).
4. A heat trace according to claim 3, wherein the power supply line further comprises a ground wire (5) provided in connection with each of the heat generating elements (2).
5. Heat trace according to claim 1, characterized in that each adjacent heating element (2) is distributed in the flexible heat-conducting plate (1) with the same spacing.
6. Heat trace according to any one of claims 1 to 5, characterized in that the flexible heat-conducting plate (1) is provided at both ends, end to end, with detachable connection means (6) for securing the heat trace wrap to the heat trace equipment.
7. Heat trace according to claim 6, characterized in that the detachable connection means (6) are fixed buckles with adjustable tightness.
8. A shell and tube heat exchanger comprising a plurality of shell and tubes and a heat trace strip wrapped on each of the shell and tubes, wherein the heat trace strip is the heat trace strip of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610806107.4A CN107801260B (en) | 2016-09-05 | 2016-09-05 | Heat tracing belt and shell-and-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610806107.4A CN107801260B (en) | 2016-09-05 | 2016-09-05 | Heat tracing belt and shell-and-tube heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107801260A CN107801260A (en) | 2018-03-13 |
| CN107801260B true CN107801260B (en) | 2024-04-26 |
Family
ID=61529961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610806107.4A Active CN107801260B (en) | 2016-09-05 | 2016-09-05 | Heat tracing belt and shell-and-tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107801260B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2921545Y (en) * | 2006-07-25 | 2007-07-11 | 周庆立 | Self-controlling temperature PTC insulating hose |
| CN201181605Y (en) * | 2008-03-10 | 2009-01-14 | 昆山火凤凰线缆有限公司 | Aerial optical/electrical cable snow-melting and deicing apparatus |
| JP2009129816A (en) * | 2007-11-27 | 2009-06-11 | Ohsin Denko:Kk | Electric heating wire |
| CN102014534A (en) * | 2009-09-09 | 2011-04-13 | 胡志新 | Heating cable |
| CN201926368U (en) * | 2010-12-23 | 2011-08-10 | 珠海格力电器股份有限公司 | Shell and tube type heat exchanger |
| CN103673043A (en) * | 2012-08-30 | 2014-03-26 | 昆山开思拓节能技术有限公司 | Automatic temperature control floor heating device |
| CN104486854A (en) * | 2014-12-04 | 2015-04-01 | 沈阳工业大学 | Screw rod pump heating and heat preservation device |
| CN206100509U (en) * | 2016-09-05 | 2017-04-12 | 珠海格力电器股份有限公司 | Heat tracing band and shell-and-tube heat exchanger |
-
2016
- 2016-09-05 CN CN201610806107.4A patent/CN107801260B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2921545Y (en) * | 2006-07-25 | 2007-07-11 | 周庆立 | Self-controlling temperature PTC insulating hose |
| JP2009129816A (en) * | 2007-11-27 | 2009-06-11 | Ohsin Denko:Kk | Electric heating wire |
| CN201181605Y (en) * | 2008-03-10 | 2009-01-14 | 昆山火凤凰线缆有限公司 | Aerial optical/electrical cable snow-melting and deicing apparatus |
| CN102014534A (en) * | 2009-09-09 | 2011-04-13 | 胡志新 | Heating cable |
| CN201926368U (en) * | 2010-12-23 | 2011-08-10 | 珠海格力电器股份有限公司 | Shell and tube type heat exchanger |
| CN103673043A (en) * | 2012-08-30 | 2014-03-26 | 昆山开思拓节能技术有限公司 | Automatic temperature control floor heating device |
| CN104486854A (en) * | 2014-12-04 | 2015-04-01 | 沈阳工业大学 | Screw rod pump heating and heat preservation device |
| CN206100509U (en) * | 2016-09-05 | 2017-04-12 | 珠海格力电器股份有限公司 | Heat tracing band and shell-and-tube heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107801260A (en) | 2018-03-13 |
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