CN220173426U - High-power high-voltage explosion-proof electric heater - Google Patents
High-power high-voltage explosion-proof electric heater Download PDFInfo
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- CN220173426U CN220173426U CN202321429834.5U CN202321429834U CN220173426U CN 220173426 U CN220173426 U CN 220173426U CN 202321429834 U CN202321429834 U CN 202321429834U CN 220173426 U CN220173426 U CN 220173426U
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- container body
- electric heater
- support column
- electric
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- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 238000005485 electric heating Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 14
- 230000017525 heat dissipation Effects 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of electric heaters, in particular to a high-power high-voltage explosion-proof electric heater, which comprises a container body, wherein a feed pipe and a discharge pipe which are communicated with an inner cavity of the container body are respectively arranged on the container body, an explosion-proof wiring cavity is arranged at the top of the container body, an electric heating mechanism is arranged in the container body, the electric heating mechanism comprises a support column extending along the length direction of the inner cavity of the container body, a positioning ring is arranged at the tail part of the support column, three heating components which are distributed around the axis of the support column in a staggered manner up and down are arranged on the support column, the heating components comprise a support frame in a fan-shaped structure or a conical structure, the inner side end surface of the support frame is an arc surface which is matched with the outer circle of the support column, and a plurality of support grooves for supporting and fixing electric furnace wires are penetratingly arranged on the support frame, and the support grooves are matched with the electric furnace wires.
Description
Technical Field
The utility model relates to the technical field of electric heaters, in particular to a high-power high-pressure explosion-proof electric heater.
Background
In the past, most of large-scale synthetic ammonia (generally 30 ten thousand tons or more produced in one year) is introduced into devices and technologies, and the ammonia synthesis catalyst is heated and reduced by a gas heating furnace for heating, but in recent years, the localization technology of the large-scale synthetic ammonia and the localization trend of key technologies are greatly accelerated. Due to the fact that the gas heating furnaces are insufficient, more and more enterprises select electric heating to replace the gas heating furnaces. However, the high-power electric heater (generally 4000KW or more) in the current market generally adopts a single electric heater to operate, and because the power is high, the current density is increased, stricter requirements are put forward on materials, structures, sealing performance and the like, a plurality of operation problems are inevitably caused by careless treatment, enterprises suffer a lot of unnecessary losses, and huge resistance is brought to popularization of the electric heater market.
The original production scale is smaller, an electric heating pipe (less than 1000 KW) is adopted at high temperature and high pressure, the existing production scale is enlarged, the single power is generally about 2000KW-4500KW, and a plurality of containers with larger volumes are required to be connected in parallel in an original mode. The original electric heater has the defects of large occupied area, high manufacturing cost, low temperature rising rate, higher heat loss, easy damage to the electric heating pipe under the high temperature condition and the like.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art, and provides a high-power high-voltage explosion-proof electric heater so as to solve the defects of large occupied area, high manufacturing cost, low heating rate, high heat loss, easiness in damaging an electric heating pipe under the high-temperature condition and the like of the original electric heater.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the high-power high-voltage explosion-proof electric heater comprises a container body, wherein a feed pipe and a discharge pipe which are communicated with an inner cavity of the container body are respectively arranged on the container body, an explosion-proof wiring cavity is arranged at the top of the container body, an electric heating mechanism is arranged in the container body, the electric heating mechanism comprises a support column extending along the length direction of the inner cavity of the container body, a positioning ring is arranged at the tail part of the support column, and three heating assemblies which are distributed in a surrounding manner and are staggered up and down by taking the axis of the support column as the center of a circle are arranged on the support column;
the heating assembly comprises a supporting frame with a fan-shaped structure or a conical structure, the inner side end surface of the supporting frame is an arc surface matched with the outer circle of the supporting column, and a plurality of supporting grooves for supporting and fixing the electric stove wires are formed in the supporting frame in a penetrating mode, and the supporting grooves are matched with the electric stove wires.
In order to ensure the heat dissipation effect of the electric furnace wire installed in the long rectangular structural supporting groove, the supporting groove is of a long rectangular structure, and heat dissipation holes are formed in the supporting frames between two adjacent supporting grooves in a penetrating mode.
As a preferable technical scheme of the utility model, the supporting groove is in a circular structure.
As a preferable technical scheme of the utility model, the supporting frame is made of alumina insulating material.
In order to facilitate the disassembly, maintenance and installation of the support frame, the support column is in threaded connection with the support frame.
In order to prevent the electric stove wire of the electric heater from touching the inner cavity wall of the electric heater and ensure the safe distance of the electric stove wire, the positioning ring is fixedly connected with the support column through a plurality of support rods which are uniformly distributed.
In order to avoid bending of the electric stove wires during temperature rising, electric stove wire weight blocks are arranged at two ends of two adjacent electric stove wires.
As a preferable technical scheme of the utility model, one end of the heating component far away from the positioning ring is provided with a conducting rod.
Compared with the prior art, the utility model has the beneficial effects that:
the electric heater is a bare high-power, high-temperature and high-voltage electric heater, and is commonly called: electric heater of synthetic tower, electric heater of ammonia synthesis, electric furnace of ammonia synthesis start-up (pressure 16Mpa, temperature 500-700 deg.C, power 2000KW-4500KW, volume: diameter less than 380mm, heating length less than 11000 mm). The catalyst has the characteristics of small volume, high power, quick heating, low cost, small occupied area and the like, is suitable for working environment under high pressure and high temperature, has the advantages of quick heating rate, good heat transfer performance and the like, overcomes the defect of slow heat conduction by the original metal shell, and is mainly used for heating, reduction and vulcanization of the catalyst.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present utility model;
FIG. 2 is a schematic view of the structure of the electric heating mechanism of the present utility model;
FIG. 3 is a schematic structural view of a supporting frame of a circular supporting groove according to the present utility model;
FIG. 4 is a schematic structural view of a support frame of the rectangular support slot of the present utility model;
FIG. 5 is a schematic diagram of a second embodiment of the present utility model;
FIG. 6 is a schematic view of the structure of the explosion-proof wiring cavity of the present utility model;
in the figure: 1. a container body; 2. an explosion-proof wiring cavity; 3. a feed pipe; 4. a discharge pipe; 5. an electric heating mechanism; 51. a support frame; 511. a support groove; 512. a heat radiation hole; 52. an electric stove wire; 53. a support column; 54. a positioning ring; 55. a support rod; 56. a conductive rod; 57. adding weight to the electric furnace wire; 4A,4B, connecting pipes; 4C, connecting pipes.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1-2, a high-power high-voltage explosion-proof electric heater comprises a container body 1, wherein a feeding pipe 3 and a discharging pipe 4 which are communicated with an inner cavity of the container body 1 are respectively arranged on the container body 1, the feeding pipe 3 is positioned at a position, close to the bottom of the container body 1, of one side of the container body 1, the discharging pipe 4 is positioned at the bottom of the container body 1, an explosion-proof wiring cavity 2 is arranged at the top of the container body 1, an electric heating mechanism 5 is arranged in the container body 1, the electric heating mechanism 5 comprises a support column 53 extending along the length direction of the inner cavity of the container body 1, a positioning ring 54 is arranged at the tail part of the support column 53, and the positioning ring 54 is fixedly connected with the support column 53 through a plurality of support rods 55 which are uniformly distributed, so that electric heater wires 52 are prevented from touching the inner cavity wall of the electric heater, the safe distance of the electric heater wires 52 is ensured, and three heating assemblies which are distributed in a staggered and surround mode up and down by taking the axis of the support column 53 as the center.
Wherein, the end of the heating component far away from the positioning ring 54 is provided with a conducting rod 56.
As shown in fig. 2, the heating assembly comprises a supporting frame 51 made of alumina insulating material and having a fan-shaped structure or a conical structure, the inner side end surface of the supporting frame 51 is an arc surface matched with the outer circle of the supporting column 53, so that the supporting frame 51 is connected with the supporting column 53 more closely, meanwhile, the supporting column 53 is connected with the supporting frame 51 by threads, so that the supporting frame 51 is convenient to disassemble, repair and install, a plurality of supporting grooves 511 for supporting and fixing the electric furnace wires 52 are formed in the supporting frame 51 in a penetrating manner, the supporting grooves 511 are matched with the electric furnace wires 52, and electric furnace wire weight increasing blocks 57 are mounted at two ends of two adjacent electric furnace wires 52.
As shown in fig. 3, the supporting groove 511 has a circular structure, and when the supporting groove 511 has a circular structure, the wire 52 has a circular structure matching with the supporting groove 511, and the wire 52 has a circular structure, so that the wire 52 can uniformly dissipate heat.
As shown in fig. 4, the supporting slots 511 are rectangular, and when the supporting slots 511 are rectangular, the wires 52 are rectangular and fit with the supporting slots 511, and the supporting frames 51 between two adjacent supporting slots 511 are provided with heat dissipation holes 512, so as to ensure the heat dissipation effect of the wires 52 installed in the rectangular supporting slots 511.
As shown in fig. 6, the explosion-proof wiring cavity 2 is of a rectangular structure, a cable is led in from the top of the explosion-proof wiring cavity 2, and meanwhile, the explosion-proof wiring cavity 2 is of a detachable structure through a plurality of fastening bolts, so that the cable is convenient to install and detach.
Example two
Referring to fig. 1-2, a high-power high-voltage explosion-proof electric heater comprises a container body 1, wherein a feeding pipe 3 and a discharging pipe 4 which are communicated with an inner cavity of the container body 1 are respectively arranged on the container body 1, the feeding pipe 3 is positioned at a position, close to the bottom of the container body 1, of one side of the container body 1, the discharging pipe 4 is positioned at the bottom of the container body 1, an explosion-proof wiring cavity 2 is arranged at the top of the container body 1, an electric heating mechanism 5 is arranged in the container body 1, the electric heating mechanism 5 comprises a support column 53 extending along the length direction of the inner cavity of the container body 1, a positioning ring 54 is arranged at the tail part of the support column 53, and the positioning ring 54 is fixedly connected with the support column 53 through a plurality of support rods 55 which are uniformly distributed, so that electric heater wires 52 are prevented from touching the inner cavity wall of the electric heater, the safe distance of the electric heater wires 52 is ensured, and three heating assemblies which are distributed in a staggered and surround mode up and down by taking the axis of the support column 53 as the center.
Wherein, the end of the heating component far away from the positioning ring 54 is provided with a conducting rod 56.
As shown in fig. 2, the heating assembly comprises a supporting frame 51 made of alumina insulating material and having a fan-shaped structure or a conical structure, the inner side end surface of the supporting frame 51 is an arc surface matched with the outer circle of the supporting column 53, so that the supporting frame 51 is connected with the supporting column 53 more closely, meanwhile, the supporting column 53 is connected with the supporting frame 51 by threads, so that the supporting frame 51 is convenient to disassemble, repair and install, a plurality of supporting grooves 511 for supporting and fixing the electric furnace wires 52 are formed in the supporting frame 51 in a penetrating manner, the supporting grooves 511 are matched with the electric furnace wires 52, and electric furnace wire weight increasing blocks 57 are mounted at two ends of two adjacent electric furnace wires 52.
As shown in fig. 3, the supporting groove 511 has a circular structure, and when the supporting groove 511 has a circular structure, the wire 52 has a circular structure matching with the supporting groove 511, and the wire 52 has a circular structure, so that the wire 52 can uniformly dissipate heat.
As shown in fig. 4, the supporting slots 511 are rectangular, and when the supporting slots 511 are rectangular, the wires 52 are rectangular and fit with the supporting slots 511, and the supporting frames 51 between two adjacent supporting slots 511 are provided with heat dissipation holes 512, so as to ensure the heat dissipation effect of the wires 52 installed in the rectangular supporting slots 511.
As shown in fig. 5, if the power is greater than 4000KW, it is recommended to connect two electric heaters in parallel, connect the discharging pipes 4A at the bottoms of the two electric heaters through the connecting pipe 4C, and additionally provide a discharging pipe 4B on the connecting pipe 4C, so that the electric heaters are discharged in parallel.
As shown in fig. 6, the explosion-proof wiring cavity 2 is of a rectangular structure, a cable is led in from the top of the explosion-proof wiring cavity 2, and meanwhile, the explosion-proof wiring cavity 2 is of a detachable structure through a plurality of fastening bolts, so that the cable is convenient to install and detach.
The electric heater is a bare high-power, high-temperature and high-voltage electric heater commonly called a synthetic tower electric heater, an ammonia synthesis electric heater and an ammonia synthesis start-up electric furnace (the pressure is 16Mpa, the temperature is 500-700 ℃, the power is 2000KW-4500KW, the volume is less than 380mm, the heating length is less than 11000 mm), and the electric heater has the characteristics of small volume, high power, quick temperature rise, low cost, small occupied area and the like, is suitable for working environment in a high-pressure and high-temperature state, and is a bare heater for directly heating media. Has the advantages of high heating rate, good heat transfer performance, etc. The defect that the heat conduction is slow by the metal shell is overcome. The catalyst is mainly used for heating, reducing and vulcanizing the catalyst. The heating medium belongs to a high-temperature, high-voltage, high-power and high-risk medium product, the electric heater is configured according to the power, three conductive rods with different sizes are used for connecting a three-phase high-quality Cr20Ni80 nickel-chromium wire to form an electric furnace wire, the standard GB/T1234-95 is implemented, the nickel content is more than 74%, and the electric heater is manufactured by the defects of smooth outer surface, no burrs, no mechanical cracks and the like. The whole wire of the electric furnace wire is manufactured, the electric furnace wire cannot be spliced, and the electric furnace wire cannot be straightened or twisted.
The principle of the utility model is as follows: the medium with initial temperature enters the inlet of the electric heater through the pipeline under the action of pressure, a great amount of heat emitted by the surface of the electric heating wire is taken away along a specific path designed according to the high-efficiency heat dissipation thermodynamic principle inside the electric heater, the medium meeting the process temperature requirement is obtained at the outlet of the electric heater, the high-power electric heater directly heats the electric heating wire according to the path designed according to the high-efficiency heat dissipation thermodynamic principle, and the airflow takes away a great amount of heat emitted by the surface of the electric heating wire. A honeycomb cluster heater is designed. The advantages are that: high power, small volume, high heat transfer rate, high temperature, low heat loss, low cost, etc.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (8)
1. The utility model provides a high-power high pressure explosion-proof electric heater, includes container body (1), be equipped with inlet pipe (3) and discharging pipe (4) that are linked together with container body (1) inner chamber on container body (1) respectively, container body (1) top is equipped with explosion-proof wiring chamber (2), is equipped with electric heating mechanism (5), its characterized in that in container body (1): the electric heating mechanism (5) comprises a support column (53) extending along the length direction of the inner cavity of the container body (1), a positioning ring (54) is arranged at the tail part of the support column (53), and three heating assemblies which are distributed around the axis of the support column (53) in a staggered manner up and down by taking the axis as the center of a circle are arranged on the support column (53);
the heating assembly comprises a supporting frame (51) with a fan-shaped structure or a conical structure, the inner side end surface of the supporting frame (51) is an arc surface matched with the outer circle of a supporting column (53), a plurality of supporting grooves (511) for supporting and fixing the electric stove wires (52) are formed in the supporting frame (51) in a penetrating mode, and the supporting grooves (511) are matched with the electric stove wires (52).
2. The high-power high-pressure explosion-proof electric heater according to claim 1, wherein: the supporting grooves (511) are of long rectangular structures, and radiating holes (512) are formed in the supporting frames (51) between two adjacent supporting grooves (511) in a penetrating mode.
3. The high-power high-pressure explosion-proof electric heater according to claim 1, wherein: the supporting groove (511) is of a circular structure.
4. The high-power high-pressure explosion-proof electric heater according to claim 1, wherein: the supporting frame (51) is made of alumina insulating materials.
5. The high-power high-pressure explosion-proof electric heater according to claim 1, wherein: the support column (53) is connected with the support frame (51) through threads.
6. The high-power high-pressure explosion-proof electric heater according to claim 1, wherein: the positioning ring (54) is fixedly connected with the supporting columns (53) through a plurality of supporting rods (55) which are uniformly distributed.
7. The high-power high-pressure explosion-proof electric heater according to claim 1, wherein: and furnace wire weighting blocks (57) are arranged at two ends of two adjacent furnace wires (52).
8. The high-power high-pressure explosion-proof electric heater according to claim 1, wherein: one end of the heating component, which is far away from the positioning ring (54), is provided with a conducting rod (56).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321429834.5U CN220173426U (en) | 2023-06-07 | 2023-06-07 | High-power high-voltage explosion-proof electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321429834.5U CN220173426U (en) | 2023-06-07 | 2023-06-07 | High-power high-voltage explosion-proof electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220173426U true CN220173426U (en) | 2023-12-12 |
Family
ID=89062230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321429834.5U Active CN220173426U (en) | 2023-06-07 | 2023-06-07 | High-power high-voltage explosion-proof electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220173426U (en) |
-
2023
- 2023-06-07 CN CN202321429834.5U patent/CN220173426U/en active Active
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