CN217789915U - Heating resistor structure and radiation type electric heating element using same - Google Patents
Heating resistor structure and radiation type electric heating element using same Download PDFInfo
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- CN217789915U CN217789915U CN202221613859.6U CN202221613859U CN217789915U CN 217789915 U CN217789915 U CN 217789915U CN 202221613859 U CN202221613859 U CN 202221613859U CN 217789915 U CN217789915 U CN 217789915U
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Abstract
The utility model relates to a heating resistor structure and a radiant electric heating element using the heating resistor, which comprises a resistance wire, wherein the resistance wire is wound along the length direction to form a spiral structure with uniform intervals, and the resistance wire along the winding direction consists of a straight line part and an arc transition part which are alternately arranged; the spiral structure is axially sleeved on the inner pipe, and the inner pipe is mutually embedded and assembled with the linear part through the groove; an outer pipe is sleeved outside the spiral structure, and a metal pipe is sleeved outside the outer pipe; two ends of the resistance wire are connected with the outgoing lines and are led out to the outside of the metal tube through the outgoing lines; the utility model provides a resistance wire supports on the inner tube through axial centre bore suit on the one hand, and on the other hand outwards disperses and forms great heating area through the alternative winding of outer end orthoscopic portion and arc transition portion to when increasing heat transfer efficiency, reliably reduce the resistance wire temperature, can transmit outer tubular metal resonator through the radiation mode with the heat that the resistance wire produced, be particularly useful for the use in the high-pressure environment.
Description
Technical Field
The utility model belongs to the technical field of the electric heating element technique and specifically relates to a heating resistor structure and use this heating resistor's radiant electric heating element.
Background
The existing electric heating element usually adopts solid powder material as filling material to be used as an insulating and heat-transferring medium, and heat is transferred by means of conduction; that is, the heat generated by the resistance wire is transferred to the metal tube through the filled insulating material, and the metal tube transfers the heat to the heated gas, liquid and solid medium. Because the insulating material filled inside the heating element after passing through the pipe is still provided with larger porosity due to the existing insulating material such as magnesium oxide, and the air in the pores can generate ionization under the action of high voltage, the existing heating element can not be used under the condition of direct power supply of high voltage.
For the fields of energy storage, wind power, photoelectricity, photo-thermal power generation, wind-solar complementary power generation, power plant peak-valley energy storage, central heating peak-valley energy storage and the like, the power of the required electric heater ranges from several megawatts to several hundred megawatts.
SUMMERY OF THE UTILITY MODEL
The applicant aims at the defects in the prior art and provides a heating resistor structure with a reasonable structure and a radiation type electric heating element using the heating resistor, so that the radiation type electric heating element can be directly suitable for high-voltage power supply, the temperature of a resistance wire is reliably reduced while the heat transfer efficiency is increased, and the practicability is good.
The utility model discloses the technical scheme who adopts as follows:
a heating resistor structure comprises a resistance wire, wherein the resistance wire is wound along the length direction to form a spiral structure with uniform front and back intervals; along the spiral winding direction, the resistance wire is composed of linear parts and arc transition parts which are alternately arranged; along the axial direction of the spiral structure, the inner side of each straight line part is internally tangent to form an internally tangent column shape in space, and the outer end of each arc transition part is externally connected to form an externally connected column shape in space; the difference between the radial size of the external cylindrical shape and the radial size of the internal cylindrical shape is larger than the diameter size of the resistance wire.
As a further improvement of the above technical solution:
the spiral ends are positioned at two ends of the spiral structure and are formed by winding the end parts of two ends of the resistance wire; the spiral diameter size of the spiral end is smaller than the size of the spiral structure.
One end of the spiral end is positioned on the axial central line of the spiral structure, and the other end of the spiral end is positioned at the edge of the spiral structure.
The spiral end is formed by bending, extending and spirally winding the corresponding straight line part.
The included angle between two adjacent straight line parts is smaller than 90 degrees.
A radiation type electric heating element using the heating resistor structure comprises a resistance wire, wherein the resistance wire is wound by a straight line part and an arc transition part which are alternately arranged to form a spiral structure with uniform front and back intervals; the spiral structure is sleeved on the inner pipe along the axial direction, and the outer wall surface of the inner pipe is provided with a groove which is mutually embedded and matched with the linear part; an outer pipe is sleeved outside the spiral structure, and a metal pipe is sleeved outside the outer pipe; and two ends of the resistance wire are connected with outgoing lines, and the outgoing lines are led out to the outside of the metal tube.
As a further improvement of the above technical solution:
two outgoing lines at the end part of the resistance wire are led out from the same end of the metal tube, and the two outgoing lines are arranged in parallel and have a distance in the axial direction.
The metal tube and the outer tube are coaxially arranged and are of a tubular structure with an opening at one end, the opening end of the metal tube is provided with an end cover, and the outgoing line penetrates through the end cover from inside to outside and then is led out from outside.
The two ends of the resistance wire are wound to form a spiral end, and a long lead bar is axially arranged through the center of the inner pipe; one end of the long lead wire rod is electrically connected with one spiral end, the spiral end is positioned on an axial central line of the spiral structure, the other end of the long lead wire rod is provided with an insulating ceramic column, and the insulating ceramic column is supported and fixed at the center of the end cover; the other spiral end is positioned at the edge of the spiral structure and is electrically connected with a short lead bar; the long lead bar and the short lead bar are arranged in parallel at intervals and are respectively electrically connected with leading-out wires.
The length of the end part of the inner pipe close to the end cover is longer than that of the spiral structure, the inner pipe positioned at the axial outer part of the spiral structure is sleeved with a heat preservation section, and the heat preservation section is accommodated in the outer pipe; the outgoing line penetrates through the end cover after penetrating through the heat preservation section.
The utility model has the advantages as follows:
the utility model has the advantages of compact and reasonable structure, the heating resistor structure supports on the one hand through axial centre bore suit on the inner tube, and on the other hand outwards disperses and forms great heating area through the alternative winding of outer end orthoscopic portion and arc transition portion to when increasing heat transfer efficiency, reliably reduce the resistance wire temperature, and realized transmitting outer tubular metal resonator through the radiation mode with the heat that the resistance wire produced, effectively avoided the influence of current filling material porosity, be particularly useful for the use among the high-pressure environment.
The utility model discloses still include following advantage:
the radiant electric heating element of the utility model can be made into different diameters, different lengths, different powers and different design temperatures, is suitable for low-voltage, medium-voltage and high-voltage direct power supply, and avoids the potential problems that the heating element is easy to damp and the like;
the utility model discloses a radiant electric heating element can directly use the high voltage power supply, and the voltage range of high voltage electricity is different from 10KV to 100KV, also can use the high voltage power supply direct power supply of higher voltage, has saved power cable's expense and the expense of transformer by a wide margin, and the expense of saving is still higher than the purchase expense of heater system even, owing to adopt the high voltage electricity direct power supply in addition, and the electric current is showing and is reducing, has also reduced power control and power transmission's energy consumption.
The utility model discloses in, the spiral end at resistance wire both ends staggers lays, and the long lead wire stick that one end was located through the center is drawn forth, and the other end directly draws forth through short lead wire stick to make two lead-out wires be located same end, and reliably guaranteed the spacing distance between the lead-out wire, effectively ensure in the in-service use, especially use under the high-pressure environment.
Drawings
Fig. 1 is a schematic structural diagram of the heating resistor structure of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is an axial view of the resistance wire of the present invention.
Fig. 4 is an outline view of the radiant electric heating element of the present invention.
Fig. 5 is a cross-sectional view of the radiant electric heating element of the present invention.
Fig. 6 is a schematic diagram of the connection between the two ends of the resistance wire and the lead-out wire of the present invention.
Wherein: 1. a resistance wire; 2. a metal tube; 3. an end cap; 4. an insulating ceramic post; 5. an inner tube; 6. an outer tube; 7. a heat preservation section;
11. a helical end; 12. an inner tangent column shape; 13. externally connecting a column; 14. an arc-shaped transition portion; 15. a straight portion; 16. an outgoing line; 17. a short lead bar; 18. a long lead bar;
51. an end-block; 52. locking the nut;
61. a first buffer pad; 62. a second buffer pad; 63. and a buffer ring.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, 2 and 3, the heating resistor structure of the present embodiment includes a resistance wire 1, wherein the resistance wire 1 is wound along a length direction to form a spiral structure with uniform front and back intervals; along the spiral winding direction, the resistance wire 1 is composed of linear parts 15 and arc transition parts 14 which are alternately arranged; along the axial direction of the spiral structure, the inner side of each straight line part 15 is internally tangent to form an internally tangent column shape 12 in space, and the outer end of each arc transition part 14 is externally connected to form an externally connected column shape 13 in space; the difference between the radial dimension of the external cylindrical shape 13 and the radial dimension of the internal cylindrical shape 12 is larger than the diameter dimension of the resistance wire 1.
In this embodiment, the heating resistor structure can be reliably and stably sleeved and supported on the outer inner tube 5 through the inner tangent pillar 12, and the axial direction can be relatively fixed relative to the inner tube 5 through the arrangement of the straight line part 15, so that the structure is reliable, stable and convenient to install.
The spiral ends 11 are formed by winding the end parts of the two ends of the resistance wire 1 at the two ends of the spiral structure; the helical diameter of the helical end 11 is smaller than the size of the helical structure; is connected with an external power supply through the two spiral ends 11.
One end spiral end 11 is located helical structure's axial central line, and other end spiral end 11 is located helical structure's edge, through the setting of different positions spiral end 11, comes the helping hand to draw forth in final lead-out wire 16 can follow same end.
The spiral ends 11 are each formed by bending and extending a corresponding linear portion 15 and spirally winding the same, and are securely connected to an external lead bar by the spiral winding.
The included angle between two adjacent straight line portions 15 is smaller than 90 degrees, so that the diameter difference between the inner tangent column 12 and the outer column 13 is large, the stable supporting installation is guaranteed, the heating area can be increased as much as possible, and the heat generation and dissipation are increased.
When the included angle between two adjacent straight line portions 15 is greater than 90 degrees, the diameter difference between the inner tangent column 12 and the outer tangent column 13 is small, the effect of stable supporting and mounting and heat dissipation can be achieved, and the effect is good when the included angle is not less than 90 degrees.
As shown in fig. 4, 5 and 6, the radiant electric heating element using the heating resistor structure of the present embodiment includes a resistance wire 1, wherein the resistance wire 1 is wound by alternately arranged straight portions 15 and arc-shaped transition portions 14 to form a spiral structure with uniform front and back intervals; the spiral structure is sleeved on the inner pipe 5 along the axial direction, and the outer wall surface of the inner pipe 5 is provided with a groove which is mutually embedded and matched with the linear part 15; an outer tube 6 is sleeved outside the spiral structure, and a metal tube 2 is sleeved outside the outer tube 6; two ends of the resistance wire 1 are connected with lead-out wires 16, and the lead-out wires 16 are led out to the outside of the metal tube 2.
In this embodiment, the heating resistor structure is supported on the inner tube 5 through the axial center hole suit on the one hand, and on the other hand outwards disperses and forms great heating area through the alternate winding of outer end straight line portion 15 and arc transition portion 14 to when increasing heat transfer efficiency, reliably reduce the resistance wire temperature, and realized passing through the radiation mode with the heat that the resistance wire produced and transmitted outer tubular metal resonator 2, effectively avoided the influence of current filler material porosity, especially be applicable to the use in the high pressure environment.
Two outgoing lines 16 at the end part of the resistance wire 1 are led out from the same end of the metal tube 2, the two outgoing lines 16 are arranged in parallel, a distance exists between the two outgoing lines in the axial direction, and the two outgoing lines 16 are enabled to be in complementary interference through the arrangement and the maintenance of the distance.
The metal tube 2 and the outer tube 6 are coaxially arranged and are both of a tubular structure with one open end, the end cover 3 is assembled at the open end of the metal tube 2, and the outgoing line 16 penetrates through the end cover 3 from inside to outside and then is led out from outside.
In the embodiment, the end cover 3 is arranged to support the whole structure of the electric heating element; the open end of the metal pipe 2 and the end cover 3 are fixedly installed through fasteners arranged in the circumferential direction, and the open end of the outer pipe 6 is pressed on the inner side face of the end cover 3 through a buffer ring 63.
A first cushion pad 61 is arranged between the outer side surface of the outer tube 6 and the inner wall of the metal tube 2 at the other end of the outer tube, and a second cushion pad 62 is arranged between the inner side surface of the outer tube and a heating component formed by the inner tube 5 and the resistance wire 1; through the arrangement of the first buffer cushion 61, the second buffer cushion 62 and the buffer ring 63, the outer tube 6 is stable and reliable relative to the installation position between the metal tube 2 and the heating component, and the normal use of the outer tube 6 is protected.
The two ends of the resistance wire 1 are wound to form a spiral end 11, and a long lead bar 18 is axially arranged through the center of the inner tube 5; one end of a long lead rod 18 is electrically connected with one spiral end 11, the spiral end 11 is positioned on an axial central line of the spiral structure, the other end of the long lead rod 18 is provided with an insulating ceramic column 4, and the insulating ceramic column 4 is supported and fixed at the center of the end cover 3; the other spiral end 11 is positioned at the edge of the spiral structure, and the spiral end 11 is electrically connected with a short lead bar 17; the long lead bars 18 and the short lead bars 17 are arranged in parallel at intervals and electrically connected with the lead wires 16, respectively.
In this embodiment, the end blocks 51 are respectively fitted to the open ends of both ends of the inner tube 5, the long lead bar 18 that axially penetrates is supported by the end blocks 51 at both ends, and the lock nuts 52 are fitted to the long lead bars 18 located on the outer side surfaces of the end blocks 51, thereby achieving stable and reliable mounting of the long lead bar 18 with respect to the inner tube 5.
In this embodiment, the spiral ends 11 at the two ends of the resistance wire 1 are arranged in a staggered manner, one end is led out through the long lead bar 18 at the center, and the other end is directly led out through the short lead bar 17, so that the two lead lines 16 are located at the same end, the spacing distance between the lead lines 16 is reliably ensured, and the practical use, especially the use in a high-voltage environment, is effectively guaranteed.
The end part of the inner pipe 5 close to the end cover 3 is longer than the length of the spiral structure, the inner pipe 5 positioned outside the spiral structure in the axial direction is sleeved with a heat preservation section 7, and the heat preservation section 7 is accommodated in the outer pipe 6; the lead-out wire 16 passes through the insulation section 7 and then passes out of the end cover 3.
In this embodiment, heat preservation section 7 is located buffer ring 63 medial surface and mutual butt, through heat preservation section 7's setting, forms the cold junction with lead-out wire 16 department, the reliable connection and the stable use of the cable of being convenient for.
The insulation section 7 in this embodiment reduces the lead temperature by filling an insulation material.
In this embodiment, the opening end of the metal pipe 2 extends circumferentially outward to form a flange structure, and is attached to the end cover 3 through the flange structure.
The inner tube 5 in this embodiment is a ceramic tube or a quartz tube.
In the embodiment, high-temperature-resistant insulating materials can be sprayed on the resistance wire 1 and the inner wall surface of the metal tube 2, so that the heat transfer efficiency is further increased, and the temperature of the resistance wire is reduced; also, when the outer tube 6 is broken, the inner wall of the metal tube 2 still has good insulating properties.
In this embodiment, the outer tube 6 is made of a transparent material such as quartz, and has the functions of insulation, high voltage resistance, light transmission, and heat radiation transfer.
The radiant electric heating element of the utility model can be manufactured into different diameters, different lengths, different powers and different design temperatures, is suitable for low-voltage, medium-voltage and high-voltage direct power supply, and avoids the potential problems that the heating element is easy to damp and the like;
the utility model discloses a radiant electric heating element can directly use the high voltage power supply, and the voltage range of high voltage electricity is different from 10KV to 100KV, also can use the high voltage power supply direct power supply of higher voltage, has saved power cable's expense and the expense of transformer by a wide margin, and the expense of saving is still higher than the purchase expense of heater system even, owing to adopt the high voltage electricity direct power supply in addition, and the electric current is showing and is reducing, has also reduced power control and power transmission's energy consumption.
The utility model discloses the structure is ingenious, has realized transmitting outer tubular metal resonator through the radiation mode with the heat that the resistance wire produced, when increasing heat transfer efficiency, reliably reduces the resistance wire temperature, and the practicality is good.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.
Claims (10)
1. A heating resistor structure is characterized in that: the resistance wire (1) is wound along the length direction to form a spiral structure with uniform front and back intervals; along the spiral winding direction, the resistance wire (1) is composed of linear parts (15) and arc transition parts (14) which are alternately arranged; along the axial direction of the spiral structure, the inner side of each straight line part (15) is internally tangent to form an internally tangent column shape (12) in space, and the outer end of each arc transition part (14) is externally connected to form an externally connected column shape (13) in space; the difference between the radial dimension of the external column (13) and the radial dimension of the internal column (12) is larger than the diameter dimension of the resistance wire (1).
2. A heating resistor structure as defined in claim 1, wherein: the two ends of the resistance wire (1) are wound to form a spiral end (11) at the two ends of the spiral structure; the spiral diameter size of the spiral end (11) is smaller than the size of the spiral structure.
3. A heat generating resistor structure according to claim 2, wherein: one end of the spiral end (11) is positioned on the axial central line of the spiral structure, and the other end of the spiral end (11) is positioned at the edge of the spiral structure.
4. A heat generating resistor structure according to claim 3, wherein: the spiral end (11) is formed by bending, extending and spirally winding a corresponding straight line part (15).
5. A heat generating resistor structure according to claim 1, wherein: the included angle between two adjacent straight line parts (15) is smaller than 90 degrees.
6. A radiant electric heating element using the heat generating resistor structure of claim 1, characterized in that: the resistance wire (1) is wound by alternately arranged straight line parts (15) and arc transition parts (14) to form a spiral structure with uniform front and back intervals; the spiral structure is sleeved on the inner pipe (5) along the axial direction, and the outer wall surface of the inner pipe (5) is provided with a groove which is mutually embedded and matched with the linear part (15); an outer tube (6) is sleeved outside the spiral structure, and a metal tube (2) is sleeved outside the outer tube (6); two ends of the resistance wire (1) are connected with lead-out wires (16) and are led out of the metal tube (2) through the lead-out wires (16).
7. A radiant electric heating element as claimed in claim 6, wherein: two lead-out wires (16) at the end part of the resistance wire (1) are led out from the same end of the metal tube (2), the two lead-out wires (16) are arranged in parallel, and a distance exists between the two lead-out wires in the axial direction.
8. A radiant electric heating element as claimed in claim 7, wherein: the metal pipe (2) and the outer pipe (6) are coaxially arranged and are both of a tubular structure with an opening at one end, the end cover (3) is assembled at the opening end of the metal pipe (2), and the outgoing line (16) penetrates through the end cover (3) from inside to outside and then is led out to the outside.
9. A radiant electric heating element as claimed in claim 8, wherein: the two ends of the resistance wire (1) are wound to form a spiral end (11) at the two ends of the spiral structure, and a long lead bar (18) is axially arranged in the center of the inner tube (5) in a penetrating way; one end of the long lead wire rod (18) is electrically connected with one spiral end (11), the spiral end (11) is located on an axial central line of the spiral structure, the other end of the long lead wire rod (18) is provided with an insulating ceramic column (4), and the insulating ceramic column (4) is supported and fixed at the center of the end cover (3); the other spiral end (11) is positioned at the edge of the spiral structure, and the spiral end (11) is electrically connected with a short lead bar (17); the long lead rods (18) and the short lead rods (17) are arranged in parallel at intervals and are respectively electrically connected with outgoing lines (16).
10. A radiant electric heating element as claimed in claim 8, wherein: the end part of the inner pipe (5) close to the end cover (3) is longer than the length of the spiral structure, the inner pipe (5) positioned outside the spiral structure in the axial direction is sleeved with a heat preservation section (7), and the heat preservation section (7) is accommodated in the outer pipe (6); the outgoing line (16) penetrates through the end cover (3) after passing through the heat preservation section (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221613859.6U CN217789915U (en) | 2022-06-24 | 2022-06-24 | Heating resistor structure and radiation type electric heating element using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221613859.6U CN217789915U (en) | 2022-06-24 | 2022-06-24 | Heating resistor structure and radiation type electric heating element using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217789915U true CN217789915U (en) | 2022-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221613859.6U Active CN217789915U (en) | 2022-06-24 | 2022-06-24 | Heating resistor structure and radiation type electric heating element using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217789915U (en) |
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2022
- 2022-06-24 CN CN202221613859.6U patent/CN217789915U/en active Active
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