CN211240663U - Magnetic shielding structure for direct current induction heating device - Google Patents
Magnetic shielding structure for direct current induction heating device Download PDFInfo
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- CN211240663U CN211240663U CN201921989089.3U CN201921989089U CN211240663U CN 211240663 U CN211240663 U CN 211240663U CN 201921989089 U CN201921989089 U CN 201921989089U CN 211240663 U CN211240663 U CN 211240663U
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Abstract
The utility model provides a magnetic shielding structure for a direct current induction heating device, which belongs to the technical field of direct current induction heating, wherein the magnetic shielding structure is sleeved on a workpiece gripper of the direct current induction heating device to isolate the magnetic field between the workpiece gripper and two iron cores of the direct current induction heating device; the device comprises a supporting outer cylinder, wherein a shielding inner cylinder capable of axially sliding is arranged in the supporting outer cylinder; the supporting outer cylinder and the shielding inner cylinder are coaxial with a rotating shaft of the workpiece gripper. The utility model adopts high magnetic conductive material as magnetic shielding structure, reduces the magnetic field intensity of the workpiece gripper areas at the two ends of the metal workpiece, and avoids the overheating phenomenon at the two ends of the metal workpiece and the workpiece gripper in the heating process; the magnetic shielding structure is a fixed structure, does not rotate along with a workpiece, a workpiece gripper, a motor and the like, and is good in stability and safe to use; the shielding range can be adjusted, the practicability is improved, and the shielding effect is ensured; the method is suitable for all direct current induction heating occasions, including superconducting direct current induction heating and permanent magnet direct current induction heating.
Description
Technical Field
The utility model relates to a direct current induction heating technical field, concretely relates to magnetic screen structure for direct current induction heating device.
Background
Compared with the traditional alternating current induction heating technology, the superconducting direct current induction heating technology has higher heating efficiency which can reach more than 80 percent, is improved by about 30 percent compared with the traditional alternating current induction heating technology, and is more energy-saving and environment-friendly. In the superconducting direct current induction heating technology, a metal workpiece is driven by a motor to rotate in a transverse direct current magnetic field generated by a superconducting magnet, so that alternating eddy current is induced in the metal workpiece, joule heat is generated due to the existence of self resistance, and the metal workpiece is further heated.
However, superconducting dc induction heating also has certain drawbacks. When a metal workpiece is heated, a workpiece gripper needs to be in close contact with the workpiece, for example, an aluminum bar needs to be fixed by the gripper and then rotated at a low speed or a medium-high speed under the driving of a motor, so that the workpiece gripper is inevitably heated simultaneously in the heating process, and the workpiece gripper is heated to cause the reduction of the energy utilization rate of an induction heater, which is contrary to the original intention when the superconducting direct-current induction heating technology is provided. To grip the aluminum bar, the workpiece gripper typically uses a stainless steel material that is denser and harder than the preheated workpiece, and there is no non-conductive material that can be substituted. Meanwhile, in the heating process of the metal workpiece, the workpiece can be softened along with the rise of temperature, and particularly, when the diameter of the aluminum bar is larger, the temperature of two ends is highest, so that the stability of the workpiece grasping by the workpiece grasping hand can be seriously influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can reduce the magnetic field intensity at work piece tongs region and work piece both ends, make the work piece tongs not heated or reduce the thermal magnetic shield structure that is used for direct current induction heating device that produces in the work piece tongs to solve at least one technical problem who exists among the above-mentioned background art.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a magnetic shielding structure for a direct current induction heating device, which is sleeved on a workpiece gripper of the direct current induction heating device and used for isolating a magnetic field between the workpiece gripper and two iron cores of the direct current induction heating device;
the magnetic shielding structure comprises a supporting outer cylinder, and a shielding inner cylinder capable of axially sliding along the supporting outer cylinder is arranged in the supporting outer cylinder;
the supporting outer cylinder and the shielding inner cylinder are coaxial with a rotating shaft of the workpiece gripper.
Preferably, a sliding portion for allowing the shielding inner cylinder to slide along the axial direction of the support outer cylinder is mounted on an outer wall of the shielding inner cylinder.
Preferably, the inner wall of the support outer cylinder is uniformly provided with a plurality of axial slideways, and the sliding part comprises a plurality of axial sliding rails corresponding to the axial slideways.
Preferably, the support outer cylinder is provided with an axial limiting hole penetrating through the cylinder wall, and the sliding part further comprises a handle extending out of the axial limiting hole.
Preferably, the axial slide rail is provided with a pulley, and the pulley rolls along the axial direction of the support outer cylinder.
Preferably, the front end cylinder wall of the support outer cylinder is provided with a plurality of blind holes penetrating through the cylinder wall and corresponding to the axial slide ways, rollers are arranged in the blind holes, the rollers roll along the axial direction of the support outer cylinder, and the diameter of each roller is larger than the thickness of the support outer cylinder.
Preferably, the outer diameter of the shielding inner cylinder is smaller than the distance between the two iron cores.
Preferably, the device also comprises a fixed table, a support is arranged on the fixed table, and the support outer cylinder is arranged on the support.
Preferably, the number of the axial slideways is 5.
Preferably, the shielding inner cylinder is made of a high-permeability material, and the sliding part is made of a non-magnetic metal material.
The utility model discloses beneficial effect: the magnetic field passing through the workpiece gripper is attracted into the shielding layer by adopting a high-permeability material as a magnetic shielding structure, so that the magnetic field passes through the shielding layer, and the magnetic field intensity of the workpiece gripper area is reduced; the magnetic field intensity between the two ends of the metal workpiece and the workpiece gripper is reduced, the phenomenon that the two ends of the metal workpiece are overheated in the heating process is avoided, and the heat generated in the workpiece gripper is effectively reduced; the magnetic shielding structure is a fixed structure, does not rotate along with a workpiece, a workpiece gripper, a motor and the like, and is good in stability and safe to use; the shielding range can be adjusted, and the practicability is improved, so that the best shielding effect is achieved; the device is suitable for all direct current induction heating occasions, including superconducting direct current induction heating and permanent magnet direct current induction heating, and is suitable for both permanent magnet rotation and workpiece rotation.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a perspective view of a magnetic shielding structure for a dc induction heating apparatus according to an embodiment of the present invention.
Fig. 2 is a structural view of a supporting outer cylinder of a magnetic shielding structure for a dc induction heating apparatus according to an embodiment of the present invention.
Fig. 3 is a structural view of a shielding inner cylinder of a magnetic shielding structure for a dc induction heating apparatus according to an embodiment of the present invention.
Fig. 4 is a schematic view of the working principle of the dc induction heating apparatus according to the present invention.
Fig. 5 is a schematic view illustrating an installation and usage status of the dc induction heating apparatus according to the embodiment of the present invention.
Wherein: 1, a workpiece gripper; 2-iron core; 3-a magnetic field; 4-supporting the outer cylinder; 5-shielding the inner cylinder; 6-a sliding part; 7-axial slideway; 8-axial slide rail; 9-axial limiting hole; 10-a handle; 11-a pulley; 12-blind holes; 13-a roller; 14-a stationary table; 15-a scaffold; 16-the workpiece to be machined.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by way of the drawings are exemplary only for the purpose of explaining the present invention and should not be construed as limiting the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
To facilitate understanding of the present invention, the present invention will be further explained with reference to specific embodiments in conjunction with the accompanying drawings, and the specific embodiments do not constitute limitations of the embodiments of the present invention.
It will be appreciated by those skilled in the art that the drawings are merely schematic representations of embodiments and that elements shown in the drawings are not necessarily required to practice the invention.
Examples
As shown in fig. 1 to 5, an embodiment of the present invention provides a magnetic shielding structure for a dc induction heating device, wherein the magnetic shielding structure is sleeved on a workpiece gripper 1 of the dc induction heating device and is used for isolating a magnetic field 3 between the workpiece gripper 1 and two iron cores 2 of the dc induction heating device; thereby reducing the heating degree at the two ends of the workpiece and effectively inhibiting the heating temperature rise of the workpiece gripper 1.
The magnetic shielding structure comprises a supporting outer cylinder 4, and a shielding inner cylinder 5 which can slide along the axial direction of the supporting outer cylinder 4 is arranged in the supporting outer cylinder 4; the supporting outer cylinder 4 and the shielding inner cylinder 5 are coaxial with a rotating shaft of the workpiece gripper 1. The magnetic shielding function of the shielding inner cylinder 5 is mainly realized by the high magnetic permeability material.
The outer wall of the shielding inner cylinder 5 is provided with a sliding part 6 which enables the shielding inner cylinder 5 to slide along the axial direction of the supporting outer cylinder 4. The inner wall of support urceolus 4 evenly is equipped with a plurality of axial slide 7, sliding part 6 include with a plurality of axial slide 8 that axial slide 7 corresponds. The support outer cylinder 4 is provided with an axial limiting hole 9 penetrating through the cylinder wall, and the sliding part 6 further comprises a handle 10 extending out of the axial limiting hole 9.
And a pulley 11 is arranged on the axial slide rail 8, and the pulley 11 axially rolls along the support outer cylinder 4. The front end cylinder wall of the supporting outer cylinder 4 is provided with a plurality of blind holes 12 which penetrate through the cylinder wall and correspond to the axial slide ways 7, rollers 13 are arranged in the blind holes 12, the rollers 13 roll along the axial direction of the supporting outer cylinder 4, and the diameter of each roller 13 is larger than the thickness of the supporting outer cylinder 4.
The outer diameter of the shielding inner cylinder 5 is smaller than the distance between the two iron cores 2.
The support is characterized by further comprising a fixing table 14, a support 15 is mounted on the fixing table 14, and the support outer cylinder 4 is mounted on the support 15. The fixed table 14 and the support 15 can enable the supporting outer cylinder and the shielding inner cylinder to be coaxial with the workpiece gripper, and uniform shielding of magnetic fields at the two ends of the workpiece gripper and the two ends of the workpiece is achieved.
The number of the axial slideways 7 is 5, and the number of the axial slide rails corresponds to that of the axial slideways so as to ensure that the shielding inner cylinder 5 can stably slide in the supporting outer cylinder 4.
In practical applications, the number of the axial slideways is not limited by the above number, and those skilled in the art can set the number of the axial slideways according to specific situations.
The shielding inner cylinder 5 is made of a high-permeability material, such as a silicon steel sheet, and an alloy formed by various iron products and rare earth elements, such as a high-permeability (Fe Si B)98(Cu Nb)2 amorphous alloy. The sliding portion 6 is made of a nonmagnetic metal material, such as tungsten carbide, nonmagnetic cemented carbide such as YSN15, YSN30, and W85, YEN21 nonmagnetic cermet material, high nonmagnetic austenite of the metals Fe — Mn — Al — C series, and various nonmagnetic steels such as 20Mn23AlV, 45Mn17Al3(917), 30Mn20Al3, 40Mn18Cr3, 40Mn18Cr4V, and 50Mn18Cr 4V.
Fig. 4 is a schematic diagram showing the basic operation principle of the dc induction heater. The dc induction heater shown in the figure mainly comprises an iron core 2, a workpiece 16 to be machined and a workpiece gripper 1. The air gap formed by the iron core 2 is the heating area of the direct current induction heater, and the transverse magnetic field 3 is distributed in the heating area. The basic operation of the dc induction heater is mainly illustrated here for the purpose of illustrating the basic operation principle, and thus only the heating area of the dc induction heater is shown in fig. 4, the iron core 2 is not shown in its entirety, and the superconducting coils or other magnetic field sources for generating the magnetic field 3 and the motor for driving the aluminum bar to be heated to rotate are also not shown. When the direct current induction heater works normally, the workpiece grippers 1 are connected with a rotating shaft of the driving motor into a whole, and a metal workpiece (namely a workpiece 16 to be processed) is pressed by the workpiece grippers 1 at two ends of the metal workpiece and rotates in a transverse magnetic field 3 in an iron core air gap under the driving of the motor. Because the metal workpiece cuts the magnetic induction lines all the time in the rotating process, eddy current can be generated in the metal workpiece, joule heat is generated under the action of self resistance, and the joule heat can be converted into heat energy required by the temperature rise of the metal workpiece.
Fig. 5 is a schematic view showing an installation position of the magnetic shield structure in the dc induction heater. The magnetic shielding structure adopts a telescopic structure in a mode of sleeving an inner cylinder and an outer cylinder, and mainly comprises a shielding inner cylinder 5 serving as a magnetic shielding layer and a supporting outer cylinder 4 serving as a supporting structure. The magnetic shielding structure is arranged around the workpiece gripper 1, and the outer cylinders are positioned on two sides of the iron core, are coaxial with the metal workpiece and cannot move; the inner cylinder is sleeved in the outer cylinder and can slide left and right in the outer cylinder, the inner cylinder is coaxial with the workpiece, the outer diameter of the inner cylinder is smaller than the width of an air gap formed by the iron core and larger than the outer diameter of the workpiece gripper, so that the inner cylinder can be ensured to enter a heating area to cover the workpiece gripper, the purpose of magnetically shielding the workpiece gripper is achieved, and the inner cylinder can slide in the outer cylinder to adjust the magnetic shielding range, namely the depth of the inner cylinder entering the heating area.
Fig. 1 is a schematic view showing a telescopic magnetic shield structure of an inner and outer cylinder sleeving type. The magnetic shielding structure mainly comprises a supporting outer cylinder 4, a shielding inner cylinder 5 and a platform 6 for fixing the magnetic shielding structure. The middle parts of the front side and the rear side of the supporting outer cylinder 4 are provided with axial limiting holes 9 penetrating through the cylinder wall, the right side edge position of the outer cylinder is provided with a roller 13 used for assisting the inner cylinder to slide, the diameter of the roller 13 is greater than the wall thickness of the outer cylinder, 5 rollers 13 are uniformly distributed in the embodiment, but not limited to 5 rollers, and the lower side of the outer cylinder is provided with a bracket for fixing. The handles are arranged on the front side and the rear side of the inner cylinder and are matched with the axial limiting holes 9 on the front side and the rear side of the outer cylinder, so that the inner cylinder cannot slide out of the outer cylinder when sliding in the outer cylinder, and the inner cylinder can be prevented from rotating around a shaft.
Fig. 2 is a schematic view showing the structure of an outer tube of a telescopic magnetic shield structure of an inner and outer tube set type. The other side of the inner cylinder wall opposite to the round wheel is provided with a trapezoidal axial slideway 7, 5 slideways are uniformly distributed in the embodiment, but not limited to 5 slideways, and the slideways do not completely penetrate along the inner cylinder wall.
Fig. 3 is a schematic view showing an inner tube structure of a telescopic magnetic shield structure of an inner and outer tube set type. A sliding part 6 made of nonmagnetic metal material and provided with a pulley 11, wherein the pulley 11 is arranged in a trapezoidal section stretching body (namely an axial slide rail 8) protruding outside the sliding part 6. The trapezoidal section stretching body is that annular evenly distributed is 5 along the sliding part, but is not limited to 5, and it mainly cooperatees with axial slide, and pulley 11's effect lies in that the inner tube slides in the urceolus more laborsavingly. While the handles are also mounted on both sides of the sliding portion. The magnetic shielding function of the inner cylinder is mainly realized by high magnetic conductive material, and the inner diameter and the outer diameter of the magnetic shielding cylinder are the same as those of the sliding part and are fixed together with the same axle center. The total length of the slide portion 9 and the magnetic shield cylinder is the same as or longer than that of the outer cylinder.
To sum up, the embodiment of the utility model provides a magnetic screen structure for direct current induction heating device, increase round high magnetic material promptly around the work piece tongs, form the shielding layer, with this magnetic field guide to the shielding layer through the region that the work piece tongs was located to make the magnetic field at work piece tongs region and work piece both ends reduce, reach the work piece tongs not heated or reduce and produce thermal purpose in the work piece tongs, also can solve the overheated problem in work piece both ends simultaneously.
The magnetic field passing through the workpiece gripper is attracted to the shielding layer by adopting a high-permeability material as a magnetic shielding structure, so that the magnetic field passes through the shielding layer, and the magnetic field in the workpiece gripper area can be reduced. Can be used for reducing the magnetic field intensity at the two ends of the metal workpiece and solving the phenomenon that the two ends of the metal workpiece are overheated in the heating process. The adopted magnetic shielding structure is a fixed structure and does not rotate along with a workpiece, a workpiece gripper, a motor and the like.
In specific application, the adopted magnetic shielding structure is but not limited to a cylindrical shape, is fixed around the workpiece gripper, keeps a proper distance with the workpiece gripper, and adopts but not limited to a telescopic structure, so that the metal workpiece can be conveniently thrown and gripped.
The adopted magnetic shielding telescopic structure adopts but is not limited to an inner cylinder and outer cylinder sleeving mode, in the adopted inner cylinder and outer cylinder sleeving mode, the outer cylinder is a supporting structure, adopts a non-magnetic material but is not limited to a cylinder shape and is fixed; the inner cylinder is a magnetic shielding cylinder and can freely slide in the outer cylinder. Therefore, the integrity of the magnetic shielding cylinder can be ensured, and the shielding range can be adjusted to achieve the best shielding effect.
In the inner and outer cylinder sleeving mode that magnetic shield extending structure adopted, be equipped with the slide between inner tube and urceolus, avoid magnetic shield section of thick bamboo around the axle rotation. In the inner and outer cylinder sleeving mode, one side of the outer surface of the inner cylinder, which is far away from the workpiece, is uniformly provided with rotatable round wheels in an annular shape along the outer wall of the inner cylinder, so that the inner cylinder can slide conveniently. One side of the outer cylinder, which is close to the workpiece, is also provided with a circle of round wheel, which is also convenient for the inner cylinder to slide.
In the method of sleeving the inner cylinder and the outer cylinder, the slide ways on the inner wall of the outer cylinder are not completely penetrated, so that the sliding range of the inner cylinder in the outer cylinder is limited and the inner cylinder cannot slide out of the outer cylinder. The middle positions of two sides of the outer cylinder are provided with a transverse groove which runs through the cylinder wall, and two sides of the outer wall of the inner cylinder are provided with handles which are vertical to the cylinder wall. Through the cooperation of horizontal groove and handle, can realize that the inner tube removes and can not the roll-off in the urceolus. The device is suitable for all direct current induction heating occasions, including superconducting direct current induction heating and permanent magnet direct current induction heating, and is suitable for both permanent magnet rotation and workpiece rotation.
Those of ordinary skill in the art will understand that: the components in the device in the embodiments of the present invention may be distributed in the device in the embodiments according to the description of the embodiments, and may be correspondingly changed in one or more devices different from the embodiments. The components of the above embodiments may be combined into one component, or may be further divided into a plurality of sub-components.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A magnetic shield structure for a direct current induction heating apparatus, characterized in that:
the magnetic shielding structure is sleeved on a workpiece gripper (1) of the direct current induction heating device and used for isolating a magnetic field (3) between the workpiece gripper (1) and two iron cores (2) of the direct current induction heating device;
the magnetic shielding structure comprises a supporting outer cylinder (4), and a shielding inner cylinder (5) capable of axially sliding along the supporting outer cylinder (4) is arranged in the supporting outer cylinder (4);
the supporting outer cylinder (4) and the shielding inner cylinder (5) are coaxial with a rotating shaft of the workpiece gripper (1).
2. The magnetic shield structure for a direct current induction heating apparatus according to claim 1, characterized in that: and a sliding part (6) which enables the shielding inner cylinder (5) to axially slide along the supporting outer cylinder (4) is arranged on the outer wall of the shielding inner cylinder (5).
3. The magnetic shield structure for a direct current induction heating apparatus according to claim 2, characterized in that: the inner wall of support urceolus (4) evenly is equipped with a plurality of axial slide (7), sliding part (6) include with a plurality of axial slide rails (8) that axial slide (7) correspond.
4. The magnetic shield structure for a direct current induction heating apparatus according to claim 3, characterized in that: the support outer cylinder (4) is provided with an axial limiting hole (9) penetrating through the cylinder wall, and the sliding part (6) further comprises a handle (10) extending out of the axial limiting hole (9).
5. The magnetic shield structure for a direct current induction heating apparatus according to claim 4, characterized in that: and a pulley (11) is arranged on the axial slide rail (8), and the pulley (11) rolls along the axial direction of the support outer cylinder (4).
6. The magnetic shield structure for a direct current induction heating apparatus according to claim 5, characterized in that: the supporting outer barrel is characterized in that a plurality of blind holes (12) which penetrate through the barrel wall and correspond to the axial slide ways (7) are formed in the barrel wall of the front end of the supporting outer barrel (4), rollers (13) are arranged in the blind holes (12), the rollers (13) axially roll along the supporting outer barrel (4), and the diameter of each roller (13) is larger than the thickness of the supporting outer barrel (4).
7. The magnetic shield structure for a direct current induction heating apparatus according to claim 6, characterized in that: the outer diameter of the shielding inner cylinder (5) is smaller than the distance between the two iron cores (2).
8. The magnetic shield structure for a direct current induction heating apparatus according to claim 7, characterized in that: still include fixed station (14), install support (15) on fixed station (14), support urceolus (4) are installed on support (15).
9. The magnetic shield structure for a direct current induction heating apparatus according to claim 8, characterized in that: the number of the axial slideways (7) is 5.
10. The magnetic shield structure for a direct current induction heating apparatus according to any one of claims 2 to 9, characterized in that: the shielding inner cylinder (5) is made of a high-permeability material, and the sliding part (6) is made of a non-magnetic metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921989089.3U CN211240663U (en) | 2019-11-18 | 2019-11-18 | Magnetic shielding structure for direct current induction heating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921989089.3U CN211240663U (en) | 2019-11-18 | 2019-11-18 | Magnetic shielding structure for direct current induction heating device |
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| Publication Number | Publication Date |
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| CN211240663U true CN211240663U (en) | 2020-08-11 |
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| CN201921989089.3U Expired - Fee Related CN211240663U (en) | 2019-11-18 | 2019-11-18 | Magnetic shielding structure for direct current induction heating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477198A (en) * | 2021-08-04 | 2021-10-08 | 上海三夫工程技术有限公司 | Gasification cracking device based on electric induction heating and method for preparing sulfur gas |
-
2019
- 2019-11-18 CN CN201921989089.3U patent/CN211240663U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477198A (en) * | 2021-08-04 | 2021-10-08 | 上海三夫工程技术有限公司 | Gasification cracking device based on electric induction heating and method for preparing sulfur gas |
| CN113477198B (en) * | 2021-08-04 | 2022-08-19 | 上海三夫工程技术有限公司 | Gasification cracking device based on electric induction heating and method for preparing sulfur gas |
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