CN107438301B - Electromagnetic heating coil shielding structure and electromagnetic steam boiler thereof - Google Patents
Electromagnetic heating coil shielding structure and electromagnetic steam boiler thereof Download PDFInfo
- Publication number
- CN107438301B CN107438301B CN201710916643.4A CN201710916643A CN107438301B CN 107438301 B CN107438301 B CN 107438301B CN 201710916643 A CN201710916643 A CN 201710916643A CN 107438301 B CN107438301 B CN 107438301B
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- electromagnetic
- zinc ferrite
- shielding structure
- electromagnetic coil
- strong
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- 229910001308 Zinc ferrite Inorganic materials 0.000 claims abstract description 64
- WGEATSXPYVGFCC-UHFFFAOYSA-N zinc ferrite Chemical compound O=[Zn].O=[Fe]O[Fe]=O WGEATSXPYVGFCC-UHFFFAOYSA-N 0.000 claims abstract description 64
- 230000005291 magnetic effect Effects 0.000 claims abstract description 56
- 239000003365 glass fiber Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000178 monomer Substances 0.000 claims description 24
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 claims description 19
- 229910000859 α-Fe Inorganic materials 0.000 claims description 19
- 239000003973 paint Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000005670 electromagnetic radiation Effects 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910001037 White iron Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005490 dry winding Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
- Cookers (AREA)
Abstract
The invention relates to an electromagnetic heating coil and an electromagnetic steam boiler. An electromagnetic heating coil shielding structure is provided with a strong zinc ferrite shielding structure outside an electromagnetic coil, the strong zinc ferrite shielding structure adopts a high-temperature-resistant glass fiber tube to string strong zinc ferrite magnetic strips, then the strong zinc ferrite magnetic strips are distributed around the electromagnetic coil in the direction perpendicular to the electromagnetic coil, and the length of the strong zinc ferrite magnetic strips is not less than the height of the electromagnetic coil. An electromagnetic steam boiler adopting a zinc ferrite shielding structure comprises a boiler body, a top steam drum and a lower heating cylinder, wherein the zinc ferrite shielding structure is arranged outside an electromagnetic coil and sleeved on the periphery of a water storage area of the heating cylinder. The electromagnetic coil shielding structure and the electromagnetic steam boiler adopting the electromagnetic coil shielding structure solve the problem of radiation interference of the electromagnetic heating coil and the electromagnetic boiler, have simple structure, reasonable design, are simple and feasible, do not need to change the structures of the existing electromagnetic coil and electromagnetic boiler, and provide feasibility for production research of high-power electromagnetic boilers.
Description
Technical Field
The invention relates to an electromagnetic heating coil and an electromagnetic steam boiler, in particular to an anti-interference shielding structure of the electromagnetic heating coil, which can well shield the radiation interference of the electromagnetic heating coil and the electromagnetic steam boiler.
Background
Electromagnetic radiation is generated when the electromagnetic coil works, and the electromagnetic radiation can cause certain interference to surrounding electronic products. For a low-power electromagnetic boiler, according to the electromagnetic radiation principle, the density of magnetic force lines generated after the cylindrical coil is powered up is mostly concentrated on the inner side of the coil, and the external radiation is only a small part, so that the interference formed by the small amount of external radiation can be ignored under the conditions of small current and small power.
The research and production work of a high-power electromagnetic boiler is carried out, when the electronic part and the boiler body part are combined for experiment, the interference always puzzles the people, and when the interference is serious, the phase-locked circuit cannot work normally, and the machine is always in a sweep frequency state. And then repeatedly checking and measuring to determine that the electromagnetic compatibility interference is surprising. While the source of interference comes from electromagnetic radiation outside the electromagnetic coil pair. Originally, for a high-current and high-power electromagnetic boiler, the electromagnetic radiation quantity of an electromagnetic coil is exponentially increased by the increase of electromagnetic power, so that stronger interference is formed, and the machine cannot work normally.
In order to solve the problem, a great amount of experiments are carried out, white iron, a cold-rolled plate and a stainless steel plate are sequentially used for making a cylindrical shielding cover slightly larger than the diameter of a coil for absorption shielding, the effect is not ideal, and heat generated by radiation of the cylindrical shielding cover causes the shielding cover to be heated and deformed, so that interference cannot be eliminated and certain power loss is caused. Practice proves that the adoption of ferromagnetic substances and stainless steel for shielding cannot solve the dry winding problem, and an additional heat radiation phenomenon is derived.
The prior art cannot solve the problem of radiation interference of an electromagnetic boiler. Therefore, finding a correct way to solve the electromagnetic interference problem is a problem which must be solved for the production research of the high-power electromagnetic boiler.
Disclosure of Invention
In order to solve the problem of high-power electromagnetic coil radiation, a large amount of data in China and abroad are read, a large amount of manpower and material resources are input through numerous experiments, a correct way for solving the electromagnetic interference is finally found for more than one year, an electromagnetic coil shielding structure is provided, and an electromagnetic steam boiler adopting the shielding structure is provided.
The invention adopts the technical scheme that:
the utility model provides an electromagnetic heating coil shielding structure, includes solenoid (2) the outside of solenoid (2) is equipped with fierce zinc ferrite shielding structure, fierce zinc ferrite shielding structure adopts high temperature resistant glass silk pipe to string fierce zinc ferrite magnetic stripe, then lays around solenoid perpendicular to solenoid's direction, the length of fierce zinc ferrite magnetic stripe (4) is not less than solenoid height. The strong zinc ferrite magnetic strip (4) is formed by stringing strong zinc ferrite magnetic strip monomers together by adopting high-temperature-resistant glass fiber tubes, then soaking and drying the strong zinc ferrite magnetic strip monomers by using insulating paint, and then arranging the strong zinc ferrite magnetic strip monomers around the electromagnetic coil in a direction perpendicular to the electromagnetic coil.
The utility model provides an electromagnetic steam boiler of adoption violent zinc ferrite shielding structure, includes furnace body (1), solenoid (2), furnace body (1) comprises top steam pocket and lower part heater cylinder, and solenoid (2) suit is peripheral at the heater cylinder water storage district solenoid (2) outside is equipped with violent zinc ferrite shielding structure, violent zinc ferrite shielding structure adopts high temperature resistant glass silk tube to string violent zinc ferrite magnetic stripe, and perpendicular to solenoid's direction is laid around heater cylinder water storage district solenoid, violent zinc ferrite magnetic stripe (4) length is not less than solenoid height.
The electromagnetic steam boiler is characterized in that the electromagnetic steam boiler is of a zinc-manganese ferrite shielding structure, the zinc-manganese ferrite magnetic strips (4) are formed by stringing zinc-manganese ferrite magnetic strip monomers together by adopting high-temperature-resistant glass fiber tubes, then are soaked in insulating paint, dried and then are distributed around the electromagnetic coil in the direction perpendicular to the electromagnetic coil, and the length of the zinc-manganese ferrite magnetic strip monomers is 5-20 cm, the width of the zinc-manganese ferrite magnetic strip monomers is 20+/-2 mm and the thickness of the zinc-manganese ferrite magnetic strip monomers is 4-6 mm.
The invention has the beneficial effects that:
1. the electromagnetic coil and the electromagnetic steam boiler adopting the strong zinc ferrite shielding structure solve the radiation problem of the electromagnetic coil, have good shielding effect, do not interfere with external control circuits and equipment, and provide feasibility for production research of high-current and high-power electromagnetic boilers.
2. The electromagnetic coil and the electromagnetic steam boiler adopting the strong zinc ferrite shielding structure have the advantages of simple structure, reasonable design, simplicity and easy implementation, no need of changing the structure of the existing electromagnetic coil and electromagnetic steam boiler, and good solution of electromagnetic radiation interference of the electromagnetic coil on external equipment and control circuits.
Drawings
Fig. 1 is a schematic structural view of an electromagnetic steam boiler of the present invention.
Detailed Description
The technical scheme of the invention is further described in detail through the following specific embodiments.
Example 1
Referring to fig. 1, the electromagnetic heating coil shielding structure of the present invention includes an electromagnetic coil 2, which is different from the prior art in that: the outside of solenoid 2 is equipped with violent zinc ferrite shielding structure, violent zinc ferrite shielding structure adopts high temperature resistant glass silk pipe to string violent zinc ferrite magnetic stripe, then lays around solenoid perpendicular to solenoid's direction, violent zinc ferrite magnetic stripe 4's total length is not less than (slightly more than) solenoid's height.
The strong zinc ferrite magnetic strip 4 is formed by stringing strong zinc ferrite magnetic strip monomers together by adopting high-temperature-resistant glass fiber tubes, soaking the strong zinc ferrite magnetic strip monomers by using insulating paint, drying the strong zinc ferrite magnetic strip monomers, and then arranging the strong zinc ferrite magnetic strip monomers around the electromagnetic coil in a direction perpendicular to the electromagnetic coil.
Example 2
Referring to fig. 1, the electromagnetic heating coil shielding structure of the present embodiment is different from embodiment 1 in that: the length of the magnetic stripe monomer of the zinc ferrite is 5-20 cm, the width is 20+/-2 mm, and the thickness is 4-6 mm.
According to the shielding structure of the electromagnetic heating coil, the arrangement interval distance of the strong zinc ferrite magnetic strips 4 is determined according to the electromagnetic power: the interval below 60KW of electromagnetic power is 5-6 mm, and the interval between 60KW and 100KW of electromagnetic power is 3-4 mm.
Example 3
Referring to fig. 1, the electromagnetic steam boiler adopting the zinc-manganese ferrite shielding structure comprises a boiler body 1 and an electromagnetic coil 2, wherein the boiler body 1 consists of a top steam drum (a gas storage area) and a lower heating cylinder, the electromagnetic coil 2 is sleeved on the periphery of the water storage area of the heating cylinder, the zinc-manganese ferrite shielding structure is arranged outside (around) the electromagnetic coil 2, the zinc-manganese ferrite shielding structure strings the zinc-manganese ferrite magnetic strips by adopting a high-temperature-resistant glass fiber tube, and then the zinc-manganese ferrite magnetic strips are distributed around the electromagnetic coil of the water storage area of the heating cylinder in a direction perpendicular to the electromagnetic coil, and the total length of the zinc-manganese ferrite magnetic strips 4 is not less than (slightly more than) the height of the electromagnetic coil.
Example 4
Referring to fig. 1, the electromagnetic steam boiler using the zinc ferrite shielding structure according to the present embodiment is different from that of embodiment 3 in that: the strong zinc ferrite magnetic strip 4 is formed by stringing strong zinc ferrite magnetic strip monomers together by adopting high-temperature-resistant glass fiber tubes, then soaking and drying the strong zinc ferrite magnetic strip monomers by using insulating paint, and then arranging the strong zinc ferrite magnetic strip monomers around the electromagnetic coil in the direction perpendicular to the electromagnetic coil, wherein the length of the strong zinc ferrite magnetic strip monomers is 5-20 cm, the width of the strong zinc ferrite magnetic strip monomers is 20+/-2 mm, and the thickness of the strong zinc ferrite magnetic strip monomers is 4-6 mm.
The arrangement interval distance of the magnetic stripes 4 of the zinc ferrite is determined according to the electromagnetic power of the electromagnetic steam boiler adopting the shielding structure of the zinc ferrite: the interval below 60KW of electromagnetic power is 5-6 mm, and the interval between 60KW and 100KW of electromagnetic power is 3-4 mm. The electromagnetic coil has high power, and the density of the magnetic stripe layout is relatively increased until interference is eliminated.
Example 5
Referring to fig. 1, the electromagnetic steam boiler with the zinc-manganese ferrite shielding structure is adopted, for the 200KW/300KW/400KW high-power electromagnetic steam boiler, the electromagnetic coil power of each heating cylinder is sequentially arranged by taking 100KW as a basic unit to form an electromagnetic compatibility array, the interval of the heating cylinders is 30+/-5 cm, and the arrangement interval of the zinc-manganese ferrite magnetic strips 4 at the periphery of the electromagnetic coils of a water storage area of the heating cylinders is 3-4 mm. The electromagnetic interference problem can be better solved.
Example 6
Referring to fig. 1, the present embodiment adopts an electromagnetic steam boiler of a zinc-manganese ferrite shielding structure, which is different from embodiment 3 or embodiment 4 in that: the electromagnetic power is 60KW, the section area of the electromagnetic wire 3 adopted by the electromagnetic coil 2 is 45-55 mm, the electromagnetic coil is formed by stranding enameled wires, the diameter of the electromagnetic coil is 300-400 mm, the height is 1000-1200 mm, the inter-turn distance is 25-32 mm, and the arrangement interval of the magnetic stripes 4 of the zinc ferrite is 3-4 mm.
Example 7
Referring to fig. 1, the electromagnetic steam boiler employing a zinc-manganese ferrite shielding structure of the present embodiment is different from embodiment 3, embodiment 4 or embodiment 5 in that: the electromagnetic power is 100KW, the section area of the electromagnetic wire 3 adopted by the electromagnetic coil 2 is 75-85 mm, the electromagnetic wire is formed by twisting enamelled wires, the coil diameter is 400-500 mm, the height is 800-1000 mm, the inter-turn distance is 20-40 mm, and the arrangement interval of the magnetic strips 4 of the zinc ferrite is 3-4 mm.
The electromagnetic steam boiler adopts the strong zinc ferrite shielding structure, the metal shells of the boiler are connected into a whole, and 12 mm screw holes are processed at the bottom of the boiler, so that the boiler is well grounded. The shielding structure of the magnetic stripe of the zinc ferrite (high temperature resistant glass fiber tubes are connected together) is adopted, so that the radiation interference problem of the electromagnetic boiler is well solved.
In order to facilitate the heat preservation of the heating cylinder and save energy, heat preservation cotton is arranged between the heating cylinder and the electromagnetic coil.
Claims (4)
1. The utility model provides an electromagnetic steam boiler of adoption fierce zinc ferrite shielding structure, includes furnace body (1), solenoid (2), furnace body (1) comprise top steam pocket and lower part heating cylinder, and solenoid (2) suit is at heating cylinder water storage district periphery, its characterized in that: a strong zinc ferrite shielding structure is arranged outside the electromagnetic coil (2), the strong zinc ferrite shielding structure strings strong zinc ferrite magnetic strips by adopting a high-temperature-resistant glass fiber tube, the strong zinc ferrite magnetic strips are distributed around the electromagnetic coil in the water storage area of the heating cylinder in the direction perpendicular to the electromagnetic coil, and the length of the strong zinc ferrite magnetic strips (4) is not less than the height of the electromagnetic coil; the arrangement interval distance of the strong zinc ferrite magnetic strips (4) depends on the electromagnetic power: the interval between the electromagnetic power below 60KW is 5 to 6 millimeters, and the interval between the electromagnetic power 60KW and 100KW is 3 to 4 millimeters; the strong zinc ferrite magnetic strip (4) is formed by stringing strong zinc ferrite magnetic strip monomers together by adopting high-temperature-resistant glass fiber tubes, then soaking and drying the strong zinc ferrite magnetic strip monomers by using insulating paint, and then arranging the strong zinc ferrite magnetic strip monomers around the electromagnetic coil in the direction perpendicular to the electromagnetic coil, wherein the length of the strong zinc ferrite magnetic strip monomers is 5-20 cm, the width of the strong zinc ferrite magnetic strip monomers is 20+/-2 mm, and the thickness of the strong zinc ferrite magnetic strip monomers is 4-6 mm.
2. The electromagnetic steam boiler adopting the zinc-manganese ferrite shielding structure according to claim 1, wherein: for a 200KW/300KW/400KW high-power electromagnetic steam boiler, the electromagnetic coil power of each heating cylinder is sequentially arranged by taking 100KW as a basic unit to form an electromagnetic compatibility array, the interval of the heating cylinders is 30+/-5 cm, and the arrangement interval of the strong zinc ferrite magnetic strips (4) at the periphery of the electromagnetic coils of the water storage area of the heating cylinders is 3-4 mm.
3. The electromagnetic steam boiler adopting the zinc-manganese ferrite shielding structure according to claim 1, wherein: the electromagnetic power is 60KW, the sectional area of an electromagnetic wire (3) adopted by an electromagnetic coil (2) is 45-55 mm, the diameter of the electromagnetic coil is 300-400 mm, the height is 1000-1200 mm, the inter-turn distance is 25-32 mm, and the arrangement interval of a magnetic strip (4) of the zinc ferrite is 3-4 mm.
4. The electromagnetic steam boiler adopting the zinc-manganese ferrite shielding structure according to claim 1, wherein: the electromagnetic power is 100KW, the cross section area of an electromagnetic wire (3) adopted by an electromagnetic coil (2) is 75-85 mm, the diameter of the electromagnetic coil is 400-500 mm, the height is 800-1000 mm, the turn-to-turn distance is 20-40 mm, and the arrangement interval of a magnetic strip (4) of the zinc ferrite is 3-4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710916643.4A CN107438301B (en) | 2017-09-30 | 2017-09-30 | Electromagnetic heating coil shielding structure and electromagnetic steam boiler thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710916643.4A CN107438301B (en) | 2017-09-30 | 2017-09-30 | Electromagnetic heating coil shielding structure and electromagnetic steam boiler thereof |
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| Publication Number | Publication Date |
|---|---|
| CN107438301A CN107438301A (en) | 2017-12-05 |
| CN107438301B true CN107438301B (en) | 2023-10-27 |
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| CN201710916643.4A Active CN107438301B (en) | 2017-09-30 | 2017-09-30 | Electromagnetic heating coil shielding structure and electromagnetic steam boiler thereof |
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|---|---|---|---|---|
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2017
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