CN210569268U - Flange type electric heater - Google Patents
Flange type electric heater Download PDFInfo
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- CN210569268U CN210569268U CN201920852568.4U CN201920852568U CN210569268U CN 210569268 U CN210569268 U CN 210569268U CN 201920852568 U CN201920852568 U CN 201920852568U CN 210569268 U CN210569268 U CN 210569268U
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Abstract
The utility model provides a flange type electric heater, which comprises a flange and a heating pipe, wherein the heating pipe is fixedly arranged on the flange in a penetrating way, one end of the heating pipe forms a heating section for heating, and the other end of the heating pipe is connected with a junction box; the liquid cooling device is arranged on a heating pipe section between the flange and the junction box and is used for cooling a heating pipe of the section; during the use, the heat that the heating pipe was come to the terminal box transmission will be taken away by the liquid cooling device, has reduced the temperature of terminal box, and in addition, the liquid cooling device is in between flange and the terminal box as the cold source, has also reduced the ambient temperature of terminal box position to can effectively prevent the cable high temperature ageing in the terminal box.
Description
Technical Field
The utility model relates to a flange formula electric heater.
Background
The flange type electric heater is mainly used in an open type and closed type solution tank or a circulating heating system and comprises a flange and a plurality of heating pipes welded on a flange plate, wherein the flange is used for being fixed with a tank opening of the solution tank, the part of the heating pipe, which is positioned on the inner side of the flange and extends into the solution tank, is used for heating solution, and one end, which is positioned on the outer side of the flange, of the heating pipe is connected with a junction box. Because the temperature of the flange type electric heater is always high near the flange, the aging problem of the junction box cable is often caused under the condition of long-time use in high-temperature occasions. Adopt the cold junction extension to increase the distance between terminal box and the flange in the mode of the one end that the extension heating pipe is in the flange outside among the prior art usually, reduce the ambient temperature of terminal box relatively, prevent that the terminal box cable is ageing, but such mode makes heater occupation space increase on the one hand, and on the other hand is because the heating pipe still can be to the terminal box heat transfer, prevents that the ageing effect of terminal box is relatively poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flange formula electric heater to solve the terminal box cable ageing very fast problem among the prior art.
In order to achieve the above object, the technical solution of the flange type electric heater of the present invention is:
a flange electric heater comprising:
a flange;
the heating pipe is fixedly arranged on the flange in a penetrating way, one end of the heating pipe forms a heating section for heating, and the other end of the heating pipe is connected with a junction box;
and the liquid cooling device is arranged on the heating pipe section between the flange and the junction box and used for cooling the heating pipe of the section.
Has the advantages that: during the use, the heat that the heating pipe was come to the terminal box transmission will be taken away by the liquid cooling device, has reduced the temperature of terminal box, and in addition, the liquid cooling device is in between flange and the terminal box as the cold source, has also reduced the ambient temperature of terminal box position to can effectively prevent the cable high temperature ageing in the terminal box.
Furthermore, the liquid cooling device is a cylindrical liquid cooling jacket with two sealed ends, the heating pipe penetrates through two end faces of the liquid cooling jacket, and a cooling liquid inlet and a cooling liquid outlet are formed in the liquid cooling jacket so that cooling liquid can flow through the liquid cooling jacket in a circulating manner.
Has the advantages that: through the coolant liquid of circulation flow through liquid cooling jacket, can be faster take away the heat in the heating pipe, the cooling effect is good.
Furthermore, the heating pipe is hermetically connected with the two end plates of the liquid cooling jacket, and the pipe wall of the heating pipe is exposed in the liquid cooling jacket and is directly contacted with the cooling liquid when in use.
Has the advantages that: on the one hand, the processing of the liquid cooling jacket can be conveniently realized, the other is convenient, the pipe wall of the heating pipe is exposed in the liquid cooling jacket and is in direct contact with cooling liquid when in use, and the cooling effect is good.
Furthermore, the cooling liquid inlet and the cooling liquid outlet are arranged at intervals along the axial direction of the liquid cooling jacket, more than two partition plates are arranged in the liquid cooling jacket, and the partition plates are arranged at intervals along the axial direction of the liquid cooling jacket to form a zigzag flow passage in the liquid cooling jacket.
Has the advantages that: the flow path of the cooling liquid in the liquid cooling jacket is prolonged, heat exchange can be carried out with the heating pipe more sufficiently, and heat on the heating pipe is taken away more efficiently.
Further, the cooling liquid inlet and the cooling liquid outlet are both arranged on the outer peripheral surface of the cylindrical liquid cooling jacket.
Has the advantages that: the cooling liquid circulation pipeline is convenient to connect, and the height size of the heater is not excessively increased.
And a heat insulation sleeve is arranged between the flange and the liquid cooling device on the heating pipe.
Has the advantages that: on one hand, the direct contact between the flange and the liquid cooling device is avoided, so that the direct heat exchange between the cooling liquid in the liquid cooling device and the flange is avoided, and the heat exchange effect between the liquid cooling device and the heating pipe is weakened; on the other hand, the heat on the flange is further blocked from being transferred to the junction box through air.
And a heat insulating sleeve is arranged between the flange and the liquid cooling jacket.
Has the advantages that: on one hand, the direct contact between the flange and the liquid cooling jacket is avoided, so that the direct heat exchange between the cooling liquid in the liquid cooling jacket and the flange is avoided, and the heat exchange effect between the liquid cooling jacket and the heating pipe is weakened; on the other hand, the heat on the flange is further blocked from being transferred to the junction box through air.
Further, the heat insulating sleeve comprises a quartz sand jacket and a heat insulating cotton jacket.
Has the advantages that: the quartz sand jacket and the heat preservation cotton jacket are arranged on the heating pipe in a penetrating mode, and the heat insulation effect of the heat insulation sleeve is better guaranteed through double-layer heat insulation of the quartz sand jacket and the heat preservation cotton jacket.
Furthermore, the flange, the quartz sand jacket, the heat preservation cotton jacket and the liquid cooling jacket are sequentially arranged in a clinging manner.
Has the advantages that: the space occupied by the liquid cooling jacket, the heat preservation cotton jacket and the quartz sand jacket in the axial direction of the heating pipe can be reduced, so that the space occupied by the flange type electric heater is smaller.
The heating pipe is a U-shaped pipe, and the opening end of the U-shaped pipe penetrates through the flange and is connected with the junction box.
Has the advantages that: the heating efficiency of the heating pipe is improved.
Drawings
Fig. 1 is a schematic structural view of a flange-type electric heater according to the present invention;
fig. 2 is a schematic structural view of a heating pipe in the middle flange electric heater of the present invention.
In the figure: 1-a junction box sealing cover; 2-a junction box; 3-a binding post; 4-a ceramic bushing; 5-cooling liquid outlet; 6-liquid cooling jacket; 7-insulating cotton jacket; 8-quartz sand jacket; 9-a flange; 10-heating a tube; 11-temperature measuring sleeve; 12-a connecting bolt; 13-a first wiring port; 14-a second wiring port; 15-cooling liquid; 16-coolant inlet; 17-heat preservation cotton; 18-quartz sand; 19-flange bolts; 20-cold end; 21-heating wires; 22-magnesium oxide powder; 23-crimping bolts; 24-stainless steel tubing; 25-a separator.
Detailed Description
The following describes embodiments of the flange-type electric heater according to the present invention with reference to the accompanying drawings.
As shown in fig. 1, the flange type electric heater includes a flange 9 and a plurality of heating pipes 10 welded to the flange 9, the heating pipes 10 pass through the flange 9, one end of each heating pipe 10 forms a heating section for heating, and the other end is connected to a junction box 2. The heating tube 10 comprises a terminal remote from the heating section for electrically conductive connection to a cable. The terminal of the heating tube 10 extends into the junction box 2 and is in sealing fit with the side wall of the junction box, and the power cable and the terminal are electrically connected in the junction box 2. The liquid cooling device is arranged on the heating pipe 10 between the junction box 2 and the flange 9, in the embodiment, the liquid cooling device is a liquid cooling jacket 6, the liquid cooling jacket 6 is in a cylindrical shape with two sealed ends, a heating pipe perforation is arranged on the liquid cooling jacket 6, a cooling liquid inlet 16 and a cooling liquid outlet 5 are arranged at intervals along the axial direction of the liquid cooling jacket 6, five partition plates 25 are arranged in the cooling liquid jacket, the partition plates 25 are sequentially arranged at intervals along the axial direction of the liquid cooling jacket 6, so that a zigzag flow passage is formed in the cooling jacket, at the moment, the cooling liquid inlet 16 and the cooling liquid outlet 5 are both arranged on the outer peripheral surface of the cylindrical liquid cooling jacket, so that heat exchange can be fully carried out between the cooling liquid 15 and the heating pipe 10 when the cooling liquid jacket 6 passes through, and heat on the. In this embodiment, the cooling liquid is water, and in other embodiments, the cooling liquid may also be oil.
Be provided with the radiation shield between liquid cooling jacket 6 and the flange 9, in this embodiment, the radiation shield includes that quartzy sand presss from both sides jacket 8 and heat preservation cotton jacket 7, and quartzy sand presss from both sides jacket 8 and heat preservation cotton jacket 7 and is the tubular structure that both ends are sealed, all is provided with the heating pipe perforation with the coaxial setting of heating pipe perforation on the liquid cooling jacket 6 on quartzy sand presss from both sides jacket 8 and the heat preservation cotton jacket 7. Flange 9, liquid cooling jacket 6, heat preservation cotton jacket 7, quartz sand jacket 8 paste the setting in proper order closely to, the both ends board sealing connection of heating pipe 10 and quartz sand jacket 8, the both ends board sealing connection of heating pipe 10 and heat preservation cotton jacket 7, the both ends board sealing connection of heating pipe 10 and liquid cooling jacket 6, it has quartz sand 18 to fill in the quartz sand jacket 8, it has heat preservation cotton 17 to fill in the heat preservation cotton jacket 7.
In this embodiment, the heating tube 10 is a U-shaped tube, and the open end of the U-shaped tube is a terminal. The terminal includes terminal 3 and threaded connection crimping bolt 23 on terminal 3, is provided with heater strip 21 in the heating pipe 10, and heater strip 21's the heater strip 21 that is close to the terminal resistance is less to constituted cold junction 20, it has magnesium oxide powder 22 to fill in the heating pipe 10, and in this embodiment, the heating pipe is nonrust steel pipe 24, is provided with ceramic bushing 4 between heating pipe and the crimping double-screw bolt, and the heating bushing in this embodiment is prior art, and concrete structure is no longer repeated.
The center of the flange 9 is provided with a temperature measuring sleeve 11, the temperature measuring sleeve 11 adopts a blind pipe structure, a wiring end of the temperature measuring sleeve extends into the junction box 2, and the temperature measuring sleeve is electrically connected with a cable in the junction box 2, so that the functions of over-temperature protection, temperature control signal providing and the like are realized.
The junction box 2 is provided with a first wiring port 13 and a second wiring port 14, wherein the first wiring port 13 is used for a power cable to penetrate out, the second wiring port 14 is used for a cable electrically connected with the wiring end of the temperature measuring sleeve 11 to penetrate out, and the power cable is hermetically matched with the side wall of the junction box 2 and the cable electrically connected with the wiring end of the temperature measuring sleeve 11. The junction box 2 further comprises a junction box sealing cover 1, and the junction box sealing cover 1 is tightly sealed in the junction box 2 through a connecting bolt 12, so that the junction box 2 is sealed by the junction box. In an environment with more inflammable gas or dust, the junction box can be replaced by an explosion-proof junction box.
During the use, fix flange 9 to the equipment that needs the heating through flange bolt 19 on, the power cable gets into terminal box 2 through first wiring mouth 13, realize through crimping bolt 23 with the fixed connection of heating pipe 10's terminal 3, the cable that is connected with the wiring end electricity of temperature measurement sleeve pipe 11 gets into terminal box 2 through second wiring mouth 14, realize the fixed connection with the wiring end of temperature measurement sleeve pipe 11 through the bolt, then cover terminal box sealed lid 1, realize the sealing connection between terminal box sealed lid 1 and the terminal box 2 with connecting bolt 12. The liquid cooling jacket 6 is connected to a cooling water system on site, and cooling water enters the liquid cooling jacket 6 from a cooling liquid inlet 16, passes through the zigzag flow passage and is discharged from a cooling liquid outlet 5. When heating for the equipment that needs the heating, heating pipe 10 can be with heat transfer to flange 9 on, through quartz sand presss from both sides the heat-proof back of cover 8 and heat preservation cotton clamp 7, can avoid the heat on the flange 9 to pass through air transfer to terminal box 2 department, moreover, quartz sand presss from both sides the cover 8 and heat preservation cotton clamp 7 can also avoid the heat transfer to liquid cooling on the flange 9 to press from both sides the cover 6, thereby avoid the temperature rising of the cooling liquid 15 in the liquid cooling presss from both sides the cover 6, thereby influence the heat transfer between cooling liquid 15 and the heating pipe. And the heat through heating pipe 10 heat-conduction can be taken away by cooling liquid 15 in liquid cooling jacket 6 when passing through liquid cooling jacket 6 to make the temperature in terminal box 2 be close to room temperature, thereby the effectual cable high temperature that prevents ages.
In this embodiment, the liquid cooling device is the liquid cooling jacket, and in other embodiments, the liquid cooling device still can be for the cooling tube of winding on the heating pipe, and each cooling tube portion intercommunication this moment, the surface of every cooling tube all is provided with the radiating fin structure of easily moreover.
In this embodiment, the both ends board sealing connection of heating pipe and liquid cooling jacket, the pipe wall of heating pipe exposes in the liquid cooling jacket and with coolant liquid direct contact when using, in other embodiments, quartz sand presss from both sides the cover welding on the flange, the cotton cover 7 welding of heat preservation is on quartz sand presss from both sides the cover, the liquid cooling jacket welding is on the cotton cover of heat preservation, this moment, quartz sand presss from both sides the cover, the cotton cover of heat preservation, the heating pipe perforation of liquid cooling jacket all is provided with inner wall mechanism, thereby when quartz sand presss from both sides the cover, the cotton cover of heat preservation, the liquid cooling jacket is not with heating pipe sealing connection, also can guarantee separately at the.
In this embodiment, coolant liquid inlet and coolant liquid outlet set up along liquid cooling jacket axial interval, are equipped with two above baffles in the liquid cooling jacket, and the baffle sets up and forms the zigzag runner in the inside liquid cooling jacket along liquid cooling jacket axial interval, and in other embodiments, also can not set up the baffle along liquid cooling jacket axial, and at this moment, the coolant liquid only gets into from the coolant liquid inlet, can from the coolant liquid outlet outflow.
In this embodiment, the cooling liquid inlet and the cooling liquid outlet are both disposed on the outer peripheral surface of the cylindrical liquid cooling jacket, and in other embodiments, one of the cooling liquid inlet and the cooling liquid outlet is disposed on the outer peripheral surface of the cylindrical liquid cooling jacket, and the other is disposed on the end surface of the cylindrical liquid cooling jacket, or the cooling liquid inlet and the cooling liquid outlet are disposed on the end surfaces of both ends of the cylindrical liquid cooling jacket, respectively.
In this embodiment, be provided with the radiation shield between flange and liquid cooling device, in other embodiments, also can not set up the radiation shield between flange and liquid cooling device, only be provided with the liquid cooling jacket this moment to set up liquid cooling jacket and flange interval.
In this embodiment, the heat insulating sleeve includes a quartz sand jacket and a heat insulating cotton jacket, in other embodiments, the heat insulating sleeve may also include only the quartz sand jacket or only the heat insulating cotton jacket, or the heat insulating sleeve may also include a magnesium oxide powder heat insulating sleeve and a heat insulating cotton jacket, or the heat insulating sleeve includes a combination of a plurality of heat insulating sleeves.
In this embodiment, liquid cooling jacket, heat preservation cotton jacket, quartz sand jacket paste the setting tightly in proper order, and in other embodiments, liquid cooling jacket, heat preservation cotton jacket, quartz sand jacket can also the interval set up.
In this embodiment, the heating pipe is in a U shape, and an open end of the U-shaped pipe passes through the flange and is connected to the terminal box.
In the embodiment, the heating pipes are fixed on the flange through welding, in other embodiments, a fastener can be welded on each heating pipe, and then the heating pipes and the fasteners are locked through nuts.
Claims (10)
1. A flange-type electric heater, comprising:
a flange;
the heating pipe is fixedly arranged on the flange in a penetrating way, one end of the heating pipe forms a heating section for heating, and the other end of the heating pipe is connected with a junction box;
and the liquid cooling device is arranged on the heating pipe section between the flange and the junction box and used for cooling the heating pipe of the section.
2. The flange electric heater according to claim 1, wherein the liquid cooling means is a tubular liquid cooling jacket with both ends sealed, the heating pipe passes through both end surfaces of the liquid cooling jacket, and the liquid cooling jacket is provided with a cooling liquid inlet and a cooling liquid outlet for circulating the cooling liquid through the liquid cooling jacket.
3. The flange electric heater according to claim 2, wherein the heating tube is sealingly connected to both end plates of the liquid cooling jacket, and a wall of the heating tube is exposed in the liquid cooling jacket and is in direct contact with the cooling liquid during use.
4. The flange electric heater according to claim 2, wherein the cooling liquid inlet and the cooling liquid outlet are spaced apart from each other in the axial direction of the liquid cooling jacket, and wherein two or more partition plates are provided in the liquid cooling jacket, the partition plates being spaced apart from each other in the axial direction of the liquid cooling jacket to form a zigzag flow passage in the liquid cooling jacket.
5. The flange electric heater according to claim 2, wherein the coolant inlet and the coolant outlet are provided on an outer peripheral surface of the cylindrical liquid cooling jacket.
6. The flange-type electric heater according to claim 1, wherein a heat insulating sleeve is provided on the heating pipe between the flange and the liquid cooling device.
7. The flange electric heater according to any one of claims 2 to 5, wherein a heat insulating jacket is provided between the flange and the liquid cooling jacket.
8. The flange electric heater according to claim 7, wherein the heat insulating jacket comprises a quartz sand jacket and a thermal cotton jacket.
9. The flange type electric heater according to claim 8, wherein the flange, the quartz sand jacket, the heat-insulating cotton jacket and the liquid cooling jacket are closely attached in sequence.
10. The flange electric heater according to any one of claims 1-5, wherein the heating tube is a U-shaped tube, the open end of the U-shaped tube passing through the flange and being connected to the terminal box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920852568.4U CN210569268U (en) | 2019-06-06 | 2019-06-06 | Flange type electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920852568.4U CN210569268U (en) | 2019-06-06 | 2019-06-06 | Flange type electric heater |
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| Publication Number | Publication Date |
|---|---|
| CN210569268U true CN210569268U (en) | 2020-05-19 |
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ID=70639306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920852568.4U Active CN210569268U (en) | 2019-06-06 | 2019-06-06 | Flange type electric heater |
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| Country | Link |
|---|---|
| CN (1) | CN210569268U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112361343A (en) * | 2020-11-11 | 2021-02-12 | 江苏凯博斯防爆电加热器有限公司 | High heat accumulation formula of security burns burning furnace electric heater |
| CN112811391A (en) * | 2021-02-04 | 2021-05-18 | 苏州竞立制氢设备有限公司 | Hydrogen purification system |
| CN114126105A (en) * | 2021-11-25 | 2022-03-01 | 华能山东石岛湾核电有限公司 | Heat dissipation and heat insulation device of heater and electric heater with same |
| CN114188905A (en) * | 2021-10-29 | 2022-03-15 | 无锡隆基氢能科技有限公司 | Explosion-proof junction box for hydrogen purification, hydrogen drying device and electrolytic water system |
-
2019
- 2019-06-06 CN CN201920852568.4U patent/CN210569268U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112361343A (en) * | 2020-11-11 | 2021-02-12 | 江苏凯博斯防爆电加热器有限公司 | High heat accumulation formula of security burns burning furnace electric heater |
| CN112811391A (en) * | 2021-02-04 | 2021-05-18 | 苏州竞立制氢设备有限公司 | Hydrogen purification system |
| CN114188905A (en) * | 2021-10-29 | 2022-03-15 | 无锡隆基氢能科技有限公司 | Explosion-proof junction box for hydrogen purification, hydrogen drying device and electrolytic water system |
| CN114126105A (en) * | 2021-11-25 | 2022-03-01 | 华能山东石岛湾核电有限公司 | Heat dissipation and heat insulation device of heater and electric heater with same |
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