CN202792554U - Radiation heating type electric heater for fluid media - Google Patents
Radiation heating type electric heater for fluid media Download PDFInfo
- Publication number
- CN202792554U CN202792554U CN 201220342470 CN201220342470U CN202792554U CN 202792554 U CN202792554 U CN 202792554U CN 201220342470 CN201220342470 CN 201220342470 CN 201220342470 U CN201220342470 U CN 201220342470U CN 202792554 U CN202792554 U CN 202792554U
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- fluid media
- electric heater
- medium
- heating type
- housing
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Abstract
The utility model relates to electric heaters, in particular to a radiation heating type electric heater for electrically heating fluid media. The radiation heating type electric heater for fluid media comprises a shell. A fireproof thermal insulating layer is coated on the inner wall of the shell. Electric heating tubes are distributed on the inner wall of the fireproof thermal insulating layer. Heat exchanging tubes allowing to-be-heated media to pass are disposed at the center of an inner cavity of the shell. A medium inlet and a medium outlet of each heat exchanging tube are located on the outer side of the shell. The radiation heating type electric heater for fluid media has the advantages that the to-be-heated fluid media do not contact with heating elements directly, so that early damage to the electric heating tubes can be avoided; the electric heating tubes can be operated in an environment with protective gases, so that the electric heating tubes are long in service life; the to-be-heated fluid media flow in the heat exchanging tubes in a sealed manner, so that airtightness of the electric heater is improved; and no to-be-heated fluid media exist in the inner cavity of the shell, so that the electric heater is convenient to dismount and maintain.
Description
Technical field
The utility model relates to a kind of electric heater unit, specifically a kind ofly carries out electrically heated radiant heating type fluid media (medium) electric heater for fluid medium.
Background technology
When the fluid media (medium) of normal temperature or low temperature requires to be heated to relatively high temperature, normally adopt the circulation heater heating.Core Feature device---heater element in the circulation heater, namely electric heating tube is relatively directly to contact heating with the fluid heated medium in the heating clamber (such as cylindrical shell, vessel shell etc.) of sealing at one except medium is imported and exported.Because some medium has very strong corrosivity, in the heating contact process, directly the high temperature corrosion electric heating tube causes the electric heating tube earlier period damage.And, because heater element (electric heating tube) seals by being welded to connect and realizing with its fixed structure piece, can not singlely change, maintenance cost is higher.
Summary of the invention
Technical problem to be solved in the utility model provide a kind of be heated fluid media (medium) can not circulate contact with heater element, the radiant heating type fluid media (medium) electric heater of heating element heater long service life.
Radiant heating type fluid media (medium) electric heater of the present utility model includes a housing, be coated with one deck refractory insulating layer on the inner walls, be placed with electric heating tube on the inwall of refractory insulating layer, the housing lumen centers is provided with the heat exchanger tube that flows through for heated medium, and medium inlet and the media outlet of heat exchanger tube are positioned at hull outside.
Described housing bore seal sealing, and be filled with protective gas in the housing inner chamber.Described protective gas is nitrogen.Be provided with nitrogen inlet and nitrogen outlet on the described housing, be provided with simultaneously air bleeding valve, safety valve and Pressure gauge.
Described heat exchanger tube is the spiral coil structure.
The terminals of described electric heating tube are connected with the anti-explosion terminal box that is arranged on hull outside.
Described housing is comprised of the upper shell that is fastenedly connected and lower house two parts, and the lower house bottom outside is provided with bracing frame.
Described hull outside also is distributed with several temperature sensors, so that control temperature or overtemperature prote.
Also be provided with observation window on the described housing.
Advantage applies of the present utility model exists:
1, being heated fluid media (medium) is not that electric heating tube directly contacts with heater element, by the heater element radiation heating, and the electric heating tube earlier period damage of having avoided the direct high temperature corrosion electric heating tube of medium to cause.
2, the electric heating tube environment can be worked under protection compression ring border, has delayed the oxide etch of electric heating tube, and under the very high working condition of dielectric heating temperature, working life is higher.
3, be heated fluid media (medium) and be enclosed in the heat exchanger tube and flow, guarantee that fully it does not leak, and has improved sealing.
4, in the housing inner chamber without heated medium, the dismounting and easy to maintenance.
Description of drawings
Fig. 1 is sectional structure schematic diagram of the present utility model;
Fig. 2 is the right side view of Fig. 1;
Fig. 3 is the left side view of Fig. 1.
The specific embodiment
As shown in the figure, this radiant heating type fluid media (medium) electric heater includes a housing 1, be coated with one deck refractory insulating layer 2 on the inner walls, be placed with electric heating tube 3 on the inwall of refractory insulating layer, the housing lumen centers is provided with the heat exchanger tube 4 that flows through for heated medium, and medium inlet 5 and the media outlet 6 of heat exchanger tube are positioned at hull outside.
The sealing of housing 1 bore seal, and be filled with protective gas in the housing inner chamber.Protective gas is nitrogen.Simultaneously, be provided with nitrogen inlet 7 and nitrogen outlet 8 on the housing, be provided with simultaneously air bleeding valve 9, safety valve 10 and Pressure gauge 11, guarantee the steady pressure of nitrogen in the heating chamber space, at high temperature to protect electric heating tube 3 and heat exchanger tube 4.
Heat exchanger tube 4 is the spiral coil structure.Spiral coil can be one, also can be many that arrange by certain forms.As pitch, diameter is identical many, arrange by the bull pitch position.
The terminals of electric heating tube 3 are connected with the anti-explosion terminal box 12 that is arranged on hull outside.Guarantee that it can work in explosive atmosphere.The blast resistance construction of anti-explosion terminal box can be flame-proof type, also can be other type (as: intrinsic safety type, positive pressure type).
Hull outside also is distributed with several temperature sensors 14, so that control temperature or overtemperature prote.
Also be provided with observation window 15 on the housing, be used for monitoring the workpiece in the housing.
Claims (9)
1. radiant heating type fluid media (medium) electric heater, include a housing (1), it is characterized in that: housing is to be coated with one deck refractory insulating layer (2) on the inwall, be placed with electric heating tube (3) on the inwall of refractory insulating layer, the housing lumen centers is provided with one or more heat exchanger tube (4) that flows through for heated medium, and the medium inlet of heat exchanger tube (5) and media outlet (6) are positioned at hull outside.
2. radiant heating type fluid media (medium) electric heater according to claim 1 is characterized in that: the sealing of housing (1) bore seal, and be filled with protective gas in the housing inner chamber.
3. radiant heating type fluid media (medium) electric heater according to claim 2, it is characterized in that: described protective gas is nitrogen.
4. radiant heating type fluid media (medium) electric heater according to claim 3 is characterized in that: be provided with nitrogen inlet (7) and nitrogen outlet (8) on the housing, be provided with simultaneously air bleeding valve (9), safety valve (10) and Pressure gauge (11).
5. radiant heating type fluid media (medium) electric heater according to claim 1 is characterized in that: heat exchanger tube (4) is the spiral coil structure.
6. radiant heating type fluid media (medium) electric heater according to claim 1, it is characterized in that: the terminals of electric heating tube (3) are connected with the anti-explosion terminal box that is arranged on hull outside (12).
7. radiant heating type fluid media (medium) electric heater according to claim 1, it is characterized in that: housing (1) is comprised of the involutory upper shell that is fastenedly connected and lower house two parts, and the lower house bottom outside is provided with bracing frame (13).
8. radiant heating type fluid media (medium) electric heater according to claim 1, it is characterized in that: hull outside is distributed with several temperature sensors (14).
9. radiant heating type fluid media (medium) electric heater according to claim 1 is characterized in that: be provided with observation window (15) on the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342470 CN202792554U (en) | 2012-07-16 | 2012-07-16 | Radiation heating type electric heater for fluid media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342470 CN202792554U (en) | 2012-07-16 | 2012-07-16 | Radiation heating type electric heater for fluid media |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202792554U true CN202792554U (en) | 2013-03-13 |
Family
ID=47819808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220342470 Expired - Lifetime CN202792554U (en) | 2012-07-16 | 2012-07-16 | Radiation heating type electric heater for fluid media |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202792554U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949331A (en) * | 2015-07-19 | 2015-09-30 | 江苏玺科电热装备有限公司 | Electric heater for heating cold hydrogenated silica powder-containing fluid |
| CN110375434A (en) * | 2019-08-09 | 2019-10-25 | 广州市富泉源不锈钢有限公司 | A kind of open heater |
| CN111912102A (en) * | 2020-07-08 | 2020-11-10 | 杭州量动自动化设备有限公司 | Fluid heating device using secondary medium and using method thereof |
-
2012
- 2012-07-16 CN CN 201220342470 patent/CN202792554U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949331A (en) * | 2015-07-19 | 2015-09-30 | 江苏玺科电热装备有限公司 | Electric heater for heating cold hydrogenated silica powder-containing fluid |
| CN110375434A (en) * | 2019-08-09 | 2019-10-25 | 广州市富泉源不锈钢有限公司 | A kind of open heater |
| CN111912102A (en) * | 2020-07-08 | 2020-11-10 | 杭州量动自动化设备有限公司 | Fluid heating device using secondary medium and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |