CN205622897U - High temperature and high pressure skin effect electric heater - Google Patents
High temperature and high pressure skin effect electric heater Download PDFInfo
- Publication number
- CN205622897U CN205622897U CN201620200327.8U CN201620200327U CN205622897U CN 205622897 U CN205622897 U CN 205622897U CN 201620200327 U CN201620200327 U CN 201620200327U CN 205622897 U CN205622897 U CN 205622897U
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- heating cable
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Abstract
The utility model belongs to the technical field of industrial process electric heating technology and specifically relates to a high temperature and high pressure skin effect electric heater. Including metal U type body, be provided with electric heating cable in the U type body, electric heating cable's both ends are connected with phase line and zero line respectively, the middle part ground connection of U type body. U type body is close to two orificial one end and is nonrust steel pipe, other parts of U type body are the nickel pipe. Electric heating cable's inner core is the nickel -chromium core. The diameter of nonrust steel pipe is greater than the diameter of nickel pipe. The mouth of pipe of U type body is connected with the tube sheet, electric heating cable's wiring end is provided with the terminal box. The utility model discloses utilize skin effect's principle, it is the partial source that generates heat that the nickel pipe generates heat, and electrothermal tube calorific capacity is few, and the system is longe -lived. The heating tube adopts the different materials welding to form, has reduced the problem of generating heat of heating tube cold junction. The cable adopts the nichrome of real core, and the current -carrying capacity is big, and temperature resistant and antioxidant activity are strong.
Description
Technical field
This utility model relates to industrial process electric-heating technology field, a kind of electric heater utilizing Kelvin effect principle to make.
Background technology
Existing industrial electro heater, frequently with the structure of circulation heater, is to insert boundling electrothermal tube structure in the container of a kind of band import and export.Fluid and cluster type electrothermal tube carry out heat exchange and reach the heated purpose of gas.The major defect of this structure is:
1, use tiny heating wire owing to electrothermal tube is internal, easily blow and 100% form by electrothermal wire heating.
2, typically require the substantial amounts of electrothermal tube of employing to be assembled.
3, due to the restriction of electrothermal tube string diameter, operating temperature can not be the highest.
4, using substantial amounts of electrothermal tube, electrothermal tube is many with the pad of tube sheet, the most easily leaks, and uses problem more prominent in high temperature, high pressure occasion.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of electric heater, has the feature of high temperature high voltage resistant.
In order to solve above-mentioned technical problem, this utility model includes metal U-tube body, is provided with heating cable in described U-tube body, and the two ends of described heating cable are connected with phase line and zero line respectively, the middle part ground connection of described U-tube body.
Preferentially, described U-tube body is stainless steel tube near one end of two mouths of pipe, and other parts of described U-tube body are nickel pipe.
Preferably, the inner core of described heating cable is nickel chromium triangle core.
Preferably, the diameter of described stainless steel tube is more than the diameter of nickel pipe.
Further, the mouth of pipe of described U-tube body is connected with tube sheet, and the terminals of described heating cable are provided with rosette.
Advantageous Effects of the present utility model is:
1, utilizing the principle of Kelvin effect, the heating of nickel pipe is part heating source, and electrothermal tube caloric value is few, and lifetime of system is long.
2, heat-generating pipe uses different materials to be welded, and reduces the heating problem of the cold end of heat-generating pipe, makes power cable and rosette be hardly damaged.
3, cable uses the nichrome of real core, and current-carrying capacity is big, and resistance to gentle antioxygenic property is strong.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Embodiment cited by this utility model; it is only intended to help and understands this utility model; should not be construed as the restriction to this utility model protection domain; for those skilled in the art; on the premise of without departing from this utility model thought; can also make improvements and modifications this utility model, these improve and modification also falls in this utility model protective scope of the claims.
As shown in Figure 1, this utility model includes metal U-tube body, and described U-tube body is stainless steel tube 2 near one end of two mouths of pipe, and other parts of described U-tube body are nickel pipe 3, described stainless steel tube and nickel pipe are processed into by thick-walled pipe, and the diameter of described stainless steel tube is more than the diameter of nickel pipe.Being provided with the heating cable 1 that inner core is nickel chromium triangle core in described U-tube body, temperature resistant grade is up to 1200 degree, and current-carrying capacity is high, and output is big.The two ends of described heating cable 1 are connected with phase line and zero line respectively, the middle part ground connection of described U-tube body.The mouth of pipe of described U-tube body is connected with tube sheet 4, and the terminals of described heating cable 1 are provided with rosette 5, and rosette is provided with the import 6 of power cable, and described power cable is connected with heating cable 1 by import 6.
This utility model is installed with in U-tube body and adds electric heating cable, this cable is different from the high temperature fluoroplastic cable in common SECT system, is the mineral cable or electrothermal tube used, and cable core therein uses solid nickel chromium triangle core pole, current-carrying capacity is big, and temperature resistant grade is high.
U-tube body uses stainless steel pipe to form with nickel sealing of tube, using nickel pipe is to consider that its pcrmeability is high, it is that its pcrmeability is low that stainless steel tube considers, the pcrmeability utilizing bi-material different produces different skin depths, producing different caloric values, due to stainless steel material, to have pcrmeability low, and skin depth is high, the feature that caloric value is low, is therefore used as cold end by stainless steel tube.
Example of the present utility model is the nickel pipe using φ 22 × 3, and the heat generating core in electrothermal tube is the nickel filament of φ 5, and actual measurement electrothermal tube heating accounts for the energy of 80%, owing to Kelvin effect accounts for the energy of 20%.Heat generating core resistance is the least, and the nickel pipe energy proportion that accounts for of heating is the biggest, and as used copper rod, the caloric value of nickel pipe to account for the energy of 64%, the most specifically used in it is also contemplated that the heatproof situation of system selection.
Heating cable in example have employed solid nickel chromium triangle core pole, and single heating tube resistor is the least, and distribution can consider: 1, uses SCR control, applies low-voltage, big electric current.2, the many electrothermal tubes after-applied common voltages of series connection are used, such as: 220V.As used VFC, the heating effect of nickel pipe will be apparent from.
Owing to the nickel pipe of heating end is the part source of heating in Kelvin effect, reduces the caloric value of its inner heat cable, extend the service life of system.
Claims (3)
1. high temperature high voltage resistant Kelvin effect electric heater, it is characterized in that, including metal U-tube body, heating cable (1) it is provided with in described U-tube body, the two ends of described heating cable (1) are connected with phase line and zero line respectively, the middle part ground connection of described U-tube body, and described U-tube body is stainless steel tube (2) near one end of two mouths of pipe, other parts of described U-tube body are nickel pipe (3), and the inner core of described heating cable is nickel chromium triangle core.
High temperature high voltage resistant Kelvin effect electric heater the most according to claim 1, it is characterised in that the diameter of described stainless steel tube is more than the diameter of nickel pipe.
High temperature high voltage resistant Kelvin effect electric heater the most according to claim 1, it is characterised in that the mouth of pipe of described U-tube body is connected with tube sheet (4), the terminals of described heating cable (1) are provided with rosette (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620200327.8U CN205622897U (en) | 2016-03-15 | 2016-03-15 | High temperature and high pressure skin effect electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620200327.8U CN205622897U (en) | 2016-03-15 | 2016-03-15 | High temperature and high pressure skin effect electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205622897U true CN205622897U (en) | 2016-10-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620200327.8U Active CN205622897U (en) | 2016-03-15 | 2016-03-15 | High temperature and high pressure skin effect electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205622897U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636256A (en) * | 2016-03-15 | 2016-06-01 | 华能无锡电热器材有限公司 | High-temperature and high-pressure resistant electrical heater employing skin effect |
-
2016
- 2016-03-15 CN CN201620200327.8U patent/CN205622897U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636256A (en) * | 2016-03-15 | 2016-06-01 | 华能无锡电热器材有限公司 | High-temperature and high-pressure resistant electrical heater employing skin effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |