CN203399315U - Spiral type instant heating tube - Google Patents
Spiral type instant heating tube Download PDFInfo
- Publication number
- CN203399315U CN203399315U CN201320428374.4U CN201320428374U CN203399315U CN 203399315 U CN203399315 U CN 203399315U CN 201320428374 U CN201320428374 U CN 201320428374U CN 203399315 U CN203399315 U CN 203399315U
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- Prior art keywords
- tube
- fairlead
- central tube
- instant heating
- heat
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Abstract
The utility model discloses a spiral type instant heating tube. The spiral type instant heating tube comprises a central tube, an outer tube, a heating element and wire-leading tubes. First insulators are disposed between the central tube and the wire-leading tubes, second insulators are disposed between the outer tube and the wire-leading tubes, and insulation thermal conductivity powder is loaded in an accommodating chamber. An insulation thermal conductivity tube body is sleeved on the central tube in the accommodating chamber, a spiral groove is disposed on an outer wall of the insulation thermal conductivity tube body, and the heating element is wrapped in the spiral groove. According to the spiral type instant heating tube, the heating element, the number of winding circles of the heating element and the pitch of the heating element are fixed by the spiral groove, a butt-weld resistor is more accurate, the heating element is evenly arranged in an axial direction, distances from the heating element to the central tube are uniform, the spiral type instant heating tube can heat evenly, and the service life of the spiral type instant heating tube is prolonged; and the problem that the central tube is pressed to be deformed by the magnesium oxide powder when shrinking of the heating tube is carried out is solved.
Description
Technical field
The utility model relates to instantaneous heating pipe.
Background technology
Since reform and opening-up, particularly, along with Chinese entry to WTO, the industry of China is accelerated has pushed international market to, and the making demand of electric heating tube has had development at full speed especially, to on international electric heating with keen competition market, occupy a tiny space, just must produce the electrothermal tube that conforms with public demand.
Existing instant electric pipe as shown in Figure 1, comprise central tube 1, outer tube 2, fairlead 3, heating wire 4, ceramic ring 5 and glue head 6, outer tube 2 is enclosed within outside central tube 1, fairlead 3 is enclosed within the end of central tube 1, and between central tube 1 and outer tube 2, heating wire 4 is arranged between central tube 1 and outer tube 2, and coated by the magnesia powder being loaded between central tube 1 and outer tube 2, ceramic ring 5 is between central tube 1 and fairlead 3, and glue head 6 is arranged between outer tube 2 and fairlead 3.
The fairlead 3 at above-mentioned instantaneous heating pipe two ends can not be realized location in the axial direction, therefore needs butt-joint retainer ring to locate and realize the welding of heating wire, but has increased after butt-joint retainer ring, heating wire 4 and the bad control of two ends fairlead 3 butt-joint resistance value.In addition, magnesia powder between central tube 1 and outer tube 2 adds and enters after heating wire 4 installs, like this, before adding magnesia powder, heating wire 4 except junction in vacant state, and while adding powder, instantaneous heating pipe is in vertical shape, therefore, heating wire 4 when adding powder because being placed on powder feeding machine in vertical pendulum, in the time of in magnesia powder 7 inflow pipes, heating wire 4 being produced to an external force pushes heating wire 4 downwards, cause heating wire 4 flight leads uneven, be that upper end is very rare, lower end is very close, like this, make heat-generating pipe surface temperature uneven, the closeer end load of heating wire is bigger than normal, affect the useful life of heat-generating pipe.Have, the vibrations of machine while adding powder, make heating wire 4 double swerves again, cause the distance between heater strip 4 and central tube 1, outer tube 2 inhomogeneous, thus make electric property high pressure and Insulation test defective.In addition, magnesia powder can be by central tube 1 compressive strain during the heat-generating pipe draw.
Summary of the invention
The purpose of this utility model is to provide a kind of spiral instant heating heat-generating pipe, utilize instantaneous heating pipe of the present utility model, helicla flute is the winding number of turns and the pitch of heater element and heater element fixedly, make butt-joint resistance more accurate, and heater element is arranged evenly in the axial direction, heater element is even to the distance of central tube, makes the heating of spiral instant heating heat-generating pipe even, the useful life of improving spiral instant heating heat-generating pipe.In the time of can solving the heat-generating pipe draw, magnesia powder is by the problem of central tube compressive strain simultaneously.
For achieving the above object, a kind of spiral instant heating heat-generating pipe, comprises central tube, outer tube, heater element and fairlead; Outer tube sleeve, outside central tube, has containing cavity between outer tube and central tube; Fairlead is located at the end of outer tube, and fairlead is between central tube and outer tube, and fairlead and heater element are electrically connected, and are provided with the first insulator between central tube and fairlead, between outer tube and fairlead, be provided with the second insulator, in containing cavity, be mounted with insulating heat-conductive powder; On central tube, being positioned at containing cavity inner sleeve has insulating heat-conductive body, on the outer wall of insulating heat-conductive body, is provided with helicla flute, and described heater element is wrapped in helicla flute.
As improvement, the end face of insulating heat-conductive body is kept out mutually with the end face of fairlead.
As improvement, the external diameter of insulating heat-conductive body is greater than the external diameter of the first insulator and is less than the external diameter of fairlead.
As improvement, the end face of insulating heat-conductive body is kept out mutually with the end face of the first insulator.
As specializing, described heater element is heating wire.
As specializing, the first described insulator is ceramic ring; The second described insulator is glue head tube.
As specializing, described insulating heat-conductive powder is magnesium oxide powder, and described insulating heat-conductive body is magnesia powder body.
The beneficial effects of the utility model are: owing to being provided with insulating heat-conductive body, insulating heat-conductive body can be protected central tube, and while therefore having solved the heat-generating pipe draw, magnesia powder is by the problem of central tube compressive strain, owing to being provided with helicla flute on the outer wall at insulating heat-conductive body, heater element is wrapped in helicla flute, by helicla flute, heater element is positioned, and can determine the number of turns and the pitch that heater element is wound around, when adding powder, can there is not because of the active force of insulating heat-conductive powder the phenomenon of axial motion in heater element, therefore, can guarantee that heater element arranges evenly in the axial direction, can there is not radial displacement because of the vibration of powder feeding machine in heater element simultaneously yet, the distance that makes heater element and central tube is changeless, therefore, the heat that can make heat-generating pipe produce is even, thereby can improve the life-span of heat-generating pipe.Due to the end face of insulating heat-conductive pipe and the end face of fairlead inconsistent, realized the axial limiting to fairlead, therefore do not need butt-joint retainer ring to locate fairlead, thereby improved production efficiency.The winding number of turns and pitch due to the unique restriction heating wire of helicla flute energy, therefore, can better be controlled butt-joint resistance value, more accurate.Because the external diameter of insulating heat-conductive body is greater than the external diameter of the first insulator and is less than the external diameter of fairlead, after heater element is wound on insulating heat-conductive body, can make the external diameter of the formed outside dimension of heater element and fairlead suitable, thereby be convenient to weld heater element, can also play the effect of keeping out fairlead simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of instantaneous heating pipe in prior art.
Fig. 2 is the structural representation of the spiral instant heating heat-generating pipe of the utility model.
Fig. 3 is the spiral instant heating heat-generating pipe of the utility model A-A cutaway view.
Fig. 4 is the exploded view of the spiral instant heating heat-generating pipe of the utility model.
Fig. 5 is the enlarged drawing of B.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
As shown in Figures 2 to 5, spiral instant heating heat-generating pipe comprises central tube 1, outer tube 2, fairlead 3, heater element, the first insulator, the second insulator, insulating heat-conductive powder 7 and insulating heat-conductive body 8.
As shown in Figure 3, central tube 1 has fluid passage, and the length of central tube 1 is greater than the length of outer tube 2, is provided with the snap ring 11 of indent at the two ends of central tube 1, so that connect other pipeline.
Described outer tube 2 is enclosed within outside central tube 1, between central tube 1 and outer tube 2, is formed with containing cavity.
Fairlead 3 is located at the end of outer tube 2, and fairlead 3 is between central tube 1 and outer tube 2, and the end of outer tube 2 is stretched out in one end of fairlead 3.
Described heater element is heating wire 4.The end of heating wire is welded on fairlead and is electrically connected to realize.
In the present embodiment, the first insulator is that ceramic ring 5, the second insulators are glue head tube 6, and insulating heat-conductive powder 7 is magnesia powder, and insulating heat-conductive body 8 is magnesia powder body.
Ceramic ring 5 is located between central tube 1 and fairlead 3, and glue head tube 6 is located between fairlead 3 and outer tube 2, utilizes ceramic ring 5 and glue head tube 6 can play good insulating effect.
Magnesia powder body is enclosed within on the central tube 1 that is positioned at containing cavity, and magnesia powder body can be protected central tube 1, and while having solved the heat-generating pipe draw, magnesia powder is by the technical problem of central tube compressive strain; On the outer wall of magnesium oxide tube cell, be provided with helicla flute 81, heating wire is wrapped in helicla flute, utilize helicla flute to determine the winding number of turns and the pitch of heating wire, so butt-joint resistance is more accurate; The end face of magnesia powder body is kept out mutually with the end face of ceramic ring 5 and fairlead 3, and wherein, the external diameter of magnesia powder body 8 is greater than the external diameter of ceramic ring 5 and is less than the external diameter of fairlead 3.So just can realize the axial location to fairlead 3, when welding heating wire, not need butt-joint retainer ring to locate fairlead 3, thereby improved production efficiency.And because the external diameter of magnesia powder body 8 is greater than the external diameter of ceramic ring 5 and is less than the external diameter of fairlead 3, after heating wire 4 is wound on magnesia powder body 8, can make the external diameter of the formed outside dimension of heating wire 4 and fairlead suitable, thereby be convenient to weld heating wire 4, can also play the effect of keeping out fairlead 3 simultaneously.
In containing cavity, add described magnesia powder 7.When adding magnesia powder 7, because heating wire 4 is fixedly wrapped in helicla flute 81, therefore, can there is not because of the active force of magnesia powder 7 phenomenon of axial motion in heating wire 4, flight lead is even in the axial direction to guarantee heating wire 4, and heating wire 4 can not occur radial displacement because of the vibration of powder feeding machine yet simultaneously, heating wire 4 and the distance of central tube 1 are immobilized, therefore, the heat that can make heat-generating pipe produce is even, thus the life-span that can improve heat-generating pipe.
Claims (7)
1. a spiral instant heating heat-generating pipe, comprises central tube, outer tube, heater element and fairlead; Outer tube sleeve, outside central tube, has containing cavity between outer tube and central tube; Fairlead is located at the end of outer tube, and fairlead is between central tube and outer tube, and fairlead and heater element are electrically connected, and are provided with the first insulator between central tube and fairlead, between outer tube and fairlead, be provided with the second insulator, in containing cavity, be mounted with insulating heat-conductive powder; It is characterized in that: on central tube, being positioned at containing cavity inner sleeve has insulating heat-conductive body, on the outer wall of insulating heat-conductive body, is provided with helicla flute, and described heater element is wrapped in helicla flute.
2. spiral instant heating heat-generating pipe according to claim 1, is characterized in that: the end face of insulating heat-conductive body is kept out mutually with the end face of fairlead.
3. spiral instant heating heat-generating pipe according to claim 1 and 2, is characterized in that: the external diameter of insulating heat-conductive body is greater than the external diameter of the first insulator and is less than the external diameter of fairlead.
4. spiral instant heating heat-generating pipe according to claim 3, is characterized in that: the end face of insulating heat-conductive body is kept out mutually with the end face of the first insulator.
5. spiral instant heating heat-generating pipe according to claim 1, is characterized in that: described heater element is heating wire.
6. spiral instant heating heat-generating pipe according to claim 1, is characterized in that: the first described insulator is ceramic ring; The second described insulator is glue head tube.
7. spiral instant heating heat-generating pipe according to claim 1, is characterized in that: described insulating heat-conductive powder is magnesium oxide powder, and described insulating heat-conductive body is magnesia powder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320428374.4U CN203399315U (en) | 2013-07-18 | 2013-07-18 | Spiral type instant heating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320428374.4U CN203399315U (en) | 2013-07-18 | 2013-07-18 | Spiral type instant heating tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203399315U true CN203399315U (en) | 2014-01-15 |
Family
ID=49910810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320428374.4U Expired - Fee Related CN203399315U (en) | 2013-07-18 | 2013-07-18 | Spiral type instant heating tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203399315U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110072306A (en) * | 2019-05-14 | 2019-07-30 | 安徽厘米时光电热技术有限公司 | Magnesium oxide column for electric heating tube and externally-wound electric heating tube |
| CN110087350A (en) * | 2019-05-14 | 2019-08-02 | 安徽厘米时光电热技术有限公司 | Double-end electric heating tube |
| CN110087352A (en) * | 2019-05-14 | 2019-08-02 | 安徽厘米时光电热技术有限公司 | Electrothermal tube |
-
2013
- 2013-07-18 CN CN201320428374.4U patent/CN203399315U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110072306A (en) * | 2019-05-14 | 2019-07-30 | 安徽厘米时光电热技术有限公司 | Magnesium oxide column for electric heating tube and externally-wound electric heating tube |
| CN110087350A (en) * | 2019-05-14 | 2019-08-02 | 安徽厘米时光电热技术有限公司 | Double-end electric heating tube |
| CN110087352A (en) * | 2019-05-14 | 2019-08-02 | 安徽厘米时光电热技术有限公司 | Electrothermal tube |
| CN110087350B (en) * | 2019-05-14 | 2022-05-13 | 安徽元思电气有限公司 | Double-end electrothermal tube |
| CN110072306B (en) * | 2019-05-14 | 2022-05-13 | 安徽元思电气有限公司 | Externally-wound magnesium oxide column single-head electric heating tube |
| CN110087352B (en) * | 2019-05-14 | 2022-05-27 | 安徽厘米时光电热技术有限公司 | Electric heating tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20180718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |