Furnace body structure of vacuum degassing furnace with double-layer structure

Abstract

The utility model relates to a furnace body structure of a vacuum degassing furnace with a double-layer structure, and belongs to the technical field of metallurgical equipment. The furnace body structure of the vacuum degassing furnace with the double-layer structure comprises a furnace body with a crucible, and an induction coil arranged outside the crucible in a sleeving mode generates a magnetic field after being electrified so as to heat and melt metal in the crucible. The magnetic steel column forms a profiling magnet yoke, magnet yoke shielding can reduce magnetic leakage so as to prevent a shell of a furnace body from heating, the electric energy efficiency is improved, an inner barrel is arranged outside the magnetic steel column, and the inner barrel plays a role in fixing the whole induction coil, the cooling water pipe and the magnetic steel column and protects the internal structure. And an external copper pipe is not easy to deform.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of metallurgical equipment, and particularly relates to a double-layer structure vacuum degassing furnace body structure. BACKGROUND

[0002] With the innovation of technology and the development of economy, the performance requirements of steel in various industries are continuously improved, and the demand for refined steel is increasing, so secondary refining of various steel melts under vacuum has become a key production process. The induction melting vacuum degassing furnace can melt solid metal under atmospheric environment, and can degas and refine the melted metal under vacuum. Liquid metal is cast under atmosphere or inert gas protection. After refining, the content of oxygen, hydrogen, sulfur, nitrogen and various non-metallic inclusions such as oxides and sulfides in steel can be reduced, and the mechanical properties of steel can be improved.

[0003] For example, Chinese invention patent CN 118563045 A discloses an induction melting vacuum degassing furnace, wherein the furnace body includes a crucible and an induction coil, and the induction coil is used to generate a melting electromagnetic field. However, the induction coil in the document is not fixed on the outside, and when the cable in the induction coil needs to be extracted and replaced, the copper pipe on the outside is prone to deformation, resulting in damage to the equipment. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the utility model is to solve the deficiencies in the prior art, and to provide a double-layer structure vacuum degassing furnace body structure capable of fixing the induction coil.

[0005] The utility model solves the technical problems by adopting the following technical scheme:

[0006] A double-layer structure vacuum degassing furnace body structure comprises:

[0007] A furnace frame;

[0008] A furnace body is rotatably arranged on the furnace frame, and the furnace body comprises an outer shell and a crucible.

[0009] A tilt driving member is arranged to drive the furnace body to tilt.

[0010] Preferably, the double-layer structure vacuum degassing furnace body structure of the utility model comprises a copper pipe and a cable arranged in the copper pipe, and an electric appliance box is further arranged on the outside of the furnace body, and the electric appliance box is provided with an inlet and an outlet of the two ends of the copper pipe of the induction coil.

[0011] Preferably, the double-layer structure vacuum degassing furnace body structure of the utility model comprises a copper pipe and a cable arranged in the copper pipe, and an electric appliance box is further arranged on the outside of the furnace body, and the electric appliance box is provided with an inlet and an outlet of the two ends of the copper pipe of the induction coil.

[0012] Preferably, the double-layer structure vacuum degassing furnace body structure of the utility model, a plurality of openings are formed on the inner cylinder.

[0013] Preferably, the double-layer structure vacuum degassing furnace body structure of the utility model, a plurality of openings are formed on the inner cylinder.

[0014] Preferably, the double-layer structure vacuum degassing furnace body structure of the utility model, the induction coil is divided into upper coil and lower coil, and the cooling water pipe includes upper cooling water pipe located above the upper coil and lower cooling water pipe located below the lower coil.

[0015] Preferably, the double-layer structure vacuum degassing furnace body structure of the utility model, the magnetic steel column includes two side plates, two water cooling assemblies are arranged in the inner sides of the two side plates respectively, and the silicon steel sheet assembly is located between the two water cooling assemblies.

[0016] Preferably, the double-layer structure vacuum degassing furnace body structure of the utility model, the water cooling assembly includes annular hollow water cooling pipe, the first section and the tail end of the water cooling pipe are blind ends, and the first section and the tail end are connected together, and the first section and the tail end have water inlet interfaces and water outlet interfaces.

[0017] Preferably, the double-layer structure vacuum degassing furnace body structure of the utility model, a plurality of bolts pass through the side plates, the hollow parts of the water cooling assemblies and the silicon steel sheet assembly to fix the silicon steel sheet assembly.

[0018] Preferably, the double-layer structure vacuum degassing furnace body structure of the utility model, the upper coil ring is located above the upper cooling water pipe outside the crucible, and the lower coil ring is located below the lower cooling water pipe.

[0019] The double-layer structure vacuum degassing furnace body structure of the utility model has the advantages that:

[0020] The double-layer structure vacuum degassing furnace body structure of the utility model, the induction coil outside the crucible generates a magnetic field to heat and melt the metal in the crucible after being electrified. The magnetic steel column forms a profiled magnetic yoke, and the magnetic yoke shielding can reduce magnetic leakage to prevent the shell of the furnace body from heating, improve the efficiency of electric energy, the inner cylinder is arranged outside the magnetic steel column, the inner cylinder plays a fixing role on the entire induction coil, the cooling water pipe and the magnetic steel column, protects the internal structure, and when the cable in the induction coil is extracted, the external copper pipe is not easy to deform. BRIEF DESCRIPTION OF DRAWINGS

[0021] The technical scheme of the present application will be further described below in combination with the drawings and examples.

[0022] Figure 1 is a structure schematic view of the double-layer structure vacuum degassing furnace body structure of the embodiment of the present application;

[0023] Figure 2 is a structural schematic diagram of a furnace body of an embodiment of the present application;

[0024] Figure 3 is a structural schematic diagram of a furnace body of an embodiment of the present application, in which the outer shell is omitted;

[0025] Figure 4 is a structural schematic diagram of a furnace body of an embodiment of the present application, in which the outer shell and the inner cylinder are omitted;

[0026] Figure 5 is a structural schematic diagram of a magnetic steel column of an embodiment of the present application;

[0027] Figure 6 is a structural schematic diagram of a water cooling assembly of an embodiment of the present application;

[0028] Figure 7 is a structural schematic diagram of an induction coil of an embodiment of the present application;

[0029] The reference signs in the drawings are as follows:

[0030] 1 furnace stand;

[0031] 2 furnace body;

[0032] 3 tilting driving member;

[0033] 21 outer shell;

[0034] 22 crucible;

[0035] 23 inner cylinder;

[0036] 24 magnetic steel column;

[0037] 25 fixed plate;

[0038] 26 induction coil;

[0039] 27 water pipe;

[0040] 201 lower bottom plate;

[0041] 202 upper top plate;

[0042] 211 electric appliance box;

[0043] 221 metal liquid outlet;

[0044] 231 opening;

[0045] 241 side plate;

[0046] 242 water cooling assembly;

[0047] 243 silicon steel sheet assembly;

[0048] 244 dry bolt;

[0049] 261 upper coil;

[0050] 262 lower coil;

[0051] 271 upper cooling water pipe;

[0052] 272 lower cooling water pipe

[0053] 281 upper coil ring;

[0054] 282 lower coil ring;

[0055] 2421 water cooling pipe;

[0056] 2422 water inlet interface;

[0057] 2423 water outlet interface. DETAILED DESCRIPTION

[0058] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0059] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0060] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0061] The technical solutions of the present application will be described in detail below with reference to the drawings and in combination with the embodiments. Embodiment

[0062] The embodiment provides a double-layer structure vacuum degassing furnace body structure, which comprises the following components in Figure 1 combination as shown in the drawings:

[0063] a furnace frame 1;

[0064] a furnace body 2, which is rotatably arranged on the furnace frame 1, and comprises an outer shell 21 and a crucible 22, wherein the crucible 22 is sleeved with an induction coil 26 and a cooling water pipe 27, the outer side of the induction coil 26 is provided with a plurality of magnetic steel columns 24, and the outer side of the magnetic steel columns 24 is further provided with an inner cylinder 23;

[0065] a tilting driving member 3, which is used for driving the furnace body 2 to tilt.

[0066] In the double-layer structure vacuum degassing furnace body structure of the embodiment, the induction coil 26 sleeved with the crucible 22 generates a magnetic field to heat and melt the metal in the crucible 22 after being electrified. The magnetic steel columns 24 form a profiled magnetic yoke, the magnetic yoke shielding can reduce magnetic leakage to prevent the outer shell 21 of the furnace body 2 from heating, improve the electric energy efficiency, the inner cylinder 23 is arranged outside the magnetic steel columns 24, the inner cylinder 23 plays a fixing role on the entire induction coil 26, the cooling water pipe 27 and the magnetic steel columns 24, protects the internal structure, and when the cable in the induction coil is extracted, the deformation of the external copper pipe is not easy to occur.

[0067] Further, the induction coil 26 comprises a copper pipe and a cable arranged in the copper pipe, the outer side of the furnace body 2 is further provided with an electric appliance box 211, the electric appliance box 211 is provided with entrances and exits of two ends of the copper pipe of the induction coil 26, and the cable can be inserted into the pipeline of the induction coil 26 from the entrances and exits of the two ends of the copper pipe of the electric appliance box 211. Since the copper pipe is added with the cable, the damaged cable is convenient to replace.

[0068] Further, the inner cylinder 23 adopts a squirrel cage type frame structure which is rolled and welded by a stainless steel plate, the magnetic steel columns 24 abut against the induction coil 26, and the magnetic steel columns 24 and the induction coil 26 are insulated (insulated paint is coated on the surface or an insulating plate is used to separate), and meanwhile support the induction coil to improve the strength.

[0069] Further, a plurality of openings 231 are formed in the inner cylinder 23, the openings 231 can reduce the weight on one hand, and the induction coil 26 and the cooling water pipe 27 in the interior can be conveniently observed through the openings on the other hand.

[0070] Further, screws are fixed on the magnetic steel columns 24, and the screws pass through the inner cylinder 23 to fix the inner cylinder 23.

[0071] Further, the induction coil 26 is divided into an upper coil 261 and a lower coil 262, and the cooling water pipe 27 includes an upper cooling water pipe 271 above the upper coil 261 and a lower cooling water pipe 272 below the lower coil 262.

[0072] Further, a fixing plate 25 (made of epoxy resin material) is arranged around the induction coil 26 for fixing the induction coil 26.

[0073] Further, the magnetic steel column 24 includes two side plates 241, two water cooling assemblies 242 arranged inside the two side plates 241 respectively, and a silicon steel sheet assembly 243 between the two water cooling assemblies 242.

[0074] Further, the water cooling assembly 242 includes a ring-shaped hollow water cooling pipe 2421, the first section and the end of the water cooling pipe 2421 are blind ends and are connected together, and the first section and the end have a water inlet interface 2422 and a water outlet interface 2423.

[0075] Further, a plurality of bolts 244 pass through the side plates 241, the hollow parts of the water cooling assemblies 242 and the silicon steel sheet assembly 243 to fix the silicon steel sheet assembly 243.

[0076] Further, the silicon steel sheet assembly 243 is formed by laminating arc-shaped silicon steel sheets.

[0077] Further, the crucible 22 has an upper coil ring 281 above the upper cooling water pipe 271 and a lower coil ring 282 below the lower cooling water pipe 272, the upper coil ring 281 and the lower coil ring 282 are both a coil, and the upper coil ring 281 and the lower coil ring 282 form a Faraday ring to form a magnetic short circuit, fully absorb the upper and lower end leakage magnetic flux, and prevent the furnace body from heating. The induction coil upper cooling water pipe 271 and the induction coil lower cooling water pipe 272 are stainless steel water cooling rings to ensure that the furnace lining is evenly heated.

[0078] The upper and lower sides of the shell 21 are respectively a circular lower bottom plate 201 and an upper top plate 202

[0079] It should be noted that the double-layer structure vacuum degassing furnace body structure needs to be matched with the furnace cover, the furnace body and the furnace cover form a sealed space, the induction coil 26 generates a melting electromagnetic field to melt the metal in the crucible 22, and the vacuumizing equipment ensures the vacuum degree in the crucible. The top of the crucible 22 is provided with an inclined metal liquid outlet 221, when the vacuum degassing furnace body is inclined after smelting is completed, the molten metal liquid can flow out from the metal liquid outlet 221.

[0080] The induction coil is made of T2 electrolytic copper with purity of 99.97% and wall thickness of 7mm, which is extruded rectangular copper pipe and is wound on a special mold. It not only ensures the rigidity of the coil but also has the largest conductive cross section. The outer layer of the induction coil is high-temperature and high-voltage resistant insulating paint, which is overall immersed and dried in vacuum, and the insulation level reaches H level.

[0081] The tilting driving member 3 is a hydraulic cylinder. Since the vacuum degassing furnace is a tilting structure, the tilting of the vacuum degassing furnace body is not described here.

[0082] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A vacuum degassing furnace body structure of a double-layer structure, characterized by comprising: The utility model relates to a furnace frame (1), a furnace body (2) is rotatably arranged on the furnace frame (1), the furnace body (2) includes an outer shell (21) and a crucible (22), the crucible (22) is sleeved with an induction coil (26) and a cooling water pipe (27), a plurality of magnetic steel columns (24) are arranged on the outer side of the induction coil (26), and an inner cylinder (23) is further arranged on the outer side of the magnetic steel column (24). A tilting drive (3) is arranged for driving the furnace body (2) to tilt. The induction coil (26) comprises a copper pipe and a cable arranged in the copper pipe, and an electric appliance box (211) is further arranged on the outer side of the furnace body (2), and the electric appliance box (211) is provided with an inlet and an outlet of the two ends of the copper pipe of the induction coil (26). The magnetic steel column (24) abuts against the induction coil (26), and the magnetic steel column (24) and the induction coil (26) are insulated from each other.

2. The dual structure vacuum degassing furnace body structure according to claim 1, characterized by A plurality of openings (231) are formed in the inner cylinder (23).

3. The dual structure vacuum degassing furnace body structure according to claim 1, characterized by A screw is fixed on the magnetic steel column (24), and the screw passes through the inner cylinder (23) to fix the inner cylinder (23).

4. The dual structure vacuum degassing furnace body structure according to claim 1, characterized by The induction coil (26) is divided into an upper coil (261) and a lower coil (262), and the cooling water pipe (27) comprises an upper cooling water pipe (271) arranged above the upper coil (261) and a lower cooling water pipe (272) arranged below the lower coil (262).

5. The dual structure vacuum degassing furnace body structure according to claim 1, characterized by The magnetic steel column (24) comprises two side plates (241), two water cooling assemblies (242) are arranged on the inner sides of the two side plates (241) respectively, and a silicon steel sheet assembly (243) is arranged between the two water cooling assemblies (242).

6. The dual structure vacuum degassing furnace body structure according to claim 1, characterized by The water cooling assembly (242) comprises a ring-shaped hollow water cooling pipe (2421), the first section and the tail end of the water cooling pipe (2421) are blind ends and are connected together, and the first section and the tail end are provided with a water inlet interface (2422) and a water outlet interface (2423).

7. The dual structure vacuum degassing furnace body structure according to claim 1, characterized by A plurality of bolts (244) pass through the side plates (241), the hollow portions of the water cooling assemblies (242) and the silicon steel sheet assembly (243) to fix the silicon steel sheet assembly (243).

8. The dual structure vacuum degassing furnace body structure according to claim 7, characterized by The crucible (22) is provided with an upper coil ring (281) above the upper cooling water pipe (271) and a lower coil ring (282) below the lower cooling water pipe (272).

9. The dual structure vacuum degassing furnace body structure according to claim 7, characterized by ​ 10. The dual structure vacuum degassing furnace body structure according to claim 7, characterized by ​

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