CN212102930U - Induction heating device for annealing large-diameter stainless steel pipe - Google Patents

Abstract

The utility model belongs to the technical field of the annealing of major diameter stainless steel pipe and specifically relates to a be used for the annealing induction heating device of major diameter stainless steel pipe is related to, it includes induction heating coil, interior heat preservation, pours layer, supporting shoe, outer heat preservation and insulation box body component, induction heating coil be the heliciform structure that is formed by the copper pipe coiling, the utility model provides a pour the layer and pour the periphery position at induction heating coil and make induction heating coil, interior heat preservation and pour layer three even as an organic whole, guaranteed the heat loss rate of induction heating coil when heating promptly, can make the overall structure of induction heating coil when heating firm insulating properties improve again, prevent that the phenomenon of striking sparks takes place between the induction heating coil generating coil circle in the use.

Description

Induction heating device for annealing large-diameter stainless steel pipe

Technical Field

The utility model relates to an annealing field of the nonrust steel pipe of major diameter especially relates to an induction heating device for annealing of the nonrust steel pipe of major diameter.

Background

Induction heating is an electromagnetic induction heating technology which can enable a metal object to be heated to any required temperature instantly and is mainly applied to the field of metal industry, the electromagnetic induction heating is derived from an electromagnetic induction phenomenon discovered by Faraday, namely, an alternating magnetic field generates induction current in a conductor so as to cause the conductor to generate heat, since the heat effect is discovered when the current passes through a lead, a plurality of inventors engaged in research and manufacture of electric heaters appear in the world, in 1890, Sweden technicians find a first induction melting furnace, namely a slotted cored furnace; in 1893, the united states presented an iron prototype; in 1909, the electric cooker realizes the process of converting electric energy into heat energy; in 1916, a closed-slot core furnace was invented by us, and the electromagnetic induction technology gradually enters into the practical stage. Induction heating surface quenching is a quenching method which utilizes the principle of electromagnetic induction to generate induced current with high density on the surface layer of a workpiece, rapidly heats the workpiece to an austenite state, and then rapidly cools the workpiece to obtain a martensite structure. The eddy current changes electric energy into heat energy to heat the surface of the workpiece fast, the eddy current is mainly distributed on the surface of the workpiece, almost no current passes through the inside of the workpiece, the phenomenon is called surface effect or skin effect, induction heating is that the surface of the workpiece is heated to quenching temperature fast by using the skin effect and depending on the current heat effect, an induction coil is made of a copper tube, cooling water is introduced into the induction coil, and when the surface of the workpiece is heated to a certain temperature in the induction coil, the water is sprayed and cooled immediately, so that the surface layer obtains a martensite structure.

At present, an induction heater for annealing stainless steel pipes is generally exposed (for example, the application number is CN201610546593.0, the name is: a method and a device for measuring a temperature field in a steel pipe induction heating process), and for annealing large-diameter stainless steel pipes, because the power of an induction heating device is required to be large, the heat radiated outwards is large when the stainless steel pipes are heated, on one hand, the temperature rise of the inductor is caused, and the water temperature is increased; on the other hand, equipment need provide bigger power and compensate energy loss, cause the huge waste of the energy, the manufacturing cost of enterprise has been increased, the temperature that workman operational environment was increased easily to the heat of external radiation increases, and then it is comparatively abominable to lead to workman operational environment, and in addition, the phenomenon that high-power induction equipment induction heating coil was hit sparks easily takes place between the coil turns in the use induction heating coil, influence induction heating coil's life, can not satisfy the production use demand of enterprise.

Disclosure of Invention

The utility model provides an induction heating device for annealing large-diameter stainless steel pipes, which comprises an induction heating coil, an inner heat preservation layer, a pouring layer, a supporting block, an outer heat preservation layer and a heat preservation box body component, wherein the induction heating coil is a spiral structural body formed by winding copper pipes, the inner heat preservation layer is arranged in the induction heating coil and is connected with the inner wall of the induction heating coil, the pouring layer is poured on the periphery of the induction heating coil and connected with the induction heating coil, the pouring layer can pour the induction heating coil and the inner heat-insulating layer into an integrated structure through a copper pipe interturn gap on the induction heating coil, the supporting block is installed in the heat-insulating box body component and fixedly connected with the heat-insulating box body component, a groove is formed in the supporting block, the integrated structure is installed in the groove formed in the supporting block, and the outer heat-insulating layer is installed on the inner wall of the heat-insulating box body component and fixedly connected with the inner wall of the heat-insulating box body component;

the heat preservation box body component comprises a supporting bottom plate, a left side plate, a right side plate, a cover plate and a connecting piece, wherein the left side plate and the right side plate are arranged on the supporting bottom plate and are connected with the supporting bottom plate through the connecting piece;

the connecting piece is an L-shaped structure body;

the supporting block is arranged on a supporting bottom plate in the hollow rectangular cavity structure and is fixedly connected with the supporting bottom plate;

the support bottom plate, the left side plate, the right side plate and the cover plate are made of mica plates;

the pouring layer and the supporting block are made of high-temperature-resistant cement;

the inner heat-insulating layer and the outer heat-insulating layer are made of aluminum silicate cotton;

the utility model has the advantages that: the utility model has scientific integral structure design, in particular to a pouring layer in the utility model is poured on the periphery of the induction heating coil and integrates the induction heating coil, the inner heat preservation layer and the pouring layer into a whole, not only ensures the heat loss rate of the induction heating coil during heating, but also improves the stable and insulating performance of the whole structure of the induction heating coil during heating, prevents the induction heating coil from generating coil turn-to-turn ignition during use, moreover, the heating part of the utility model is integrally arranged in the heat preservation box body component, and the outer heat preservation layer is arranged on the side wall in the heat preservation box body component, the design further reduces the outward radiation heat of the stainless steel tube annealing induction heater in the using process, ensures the proper working temperature of workers, and achieves the effects of reducing the capacity loss and improving the working environment of the workers.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic side sectional view of the present invention;

FIG. 3 is a schematic structural view of the casting layer of the present invention being cast on the induction heating coil;

FIG. 4 is a schematic view of a partially enlarged structure of the part A;

FIG. 5 is a schematic structural view of a heat-insulating box member of the present invention;

FIG. 6 is a schematic view of a support block of the present invention;

the reference numbers in the figures are: 1-induction heating coil, 2-inner insulating layer, 3-pouring layer, 4-supporting block, 5-outer insulating layer, 6-insulating box body component, 7-connecting piece, 8-groove, 9-supporting bottom plate, 10-left side plate, 11-right side plate, 12-cover plate, 13-rectangular cavity structure and 14-copper pipe interturn gap.

Detailed Description

Specific example 1: the utility model aims at providing an induction heating device for annealing of major diameter stainless steel pipe, the utility model provides a pour layer 3 and pour periphery position of induction heating coil 1 and make induction heating coil 1, interior heat preservation 2 and pour layer 3 three even as an organic whole, guaranteed the heat loss rate of induction heating coil 1 when the heating promptly, can make the stable insulating nature of overall structure of induction heating coil 1 when the heating improve again, for making this technical field's personnel understand better the technical scheme of the utility model, it is right with concrete implementation mode below combining the description drawing the utility model discloses make further detailed description, it needs to explain, is called "being fixed in" or "setting up in" another component when the component, it can be direct or connect on another component within a definite time. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "left" and "right" used in this specification to denote orientation are used with reference to a particular structure shown in the drawings, and do not constitute a limitation on the structure. As shown in the attached drawings 1-6 of the specification, an induction heating device for annealing large-diameter stainless steel pipes mainly comprises an induction heating coil 1, an inner heat-insulating layer 2, a pouring layer 3, a supporting block 4, an outer heat-insulating layer 5 and a heat-insulating box body member 6, wherein the induction heating coil for carrying out induction heating on the stainless steel pipes is a spiral structure body formed by winding copper pipes, the inner heat-insulating layer 2 for carrying out temperature heat insulation on the stainless steel pipes during induction heating is arranged in the induction heating coil 1 and is contacted with the inner wall of the induction heating coil 1, the inner heat-insulating layer 2 is made of aluminum silicate cotton, the pouring layer 3 made of high-temperature-resistant cement is arranged outside the induction heating coil 1, the pouring layer 3 is poured at the peripheral part of the induction heating coil 1 and can pour the induction heating coil 1 and the inner heat-insulating layer 2 into an integral structure through, the supporting block 4 for supporting the integrated structure is arranged in the heat preservation box body component 6 and fixedly connected with the heat preservation box body component 6, a groove 8 (shown in figure 6 in the specification) for installing the integrated structure is arranged on the supporting block 4, the integrated structure is arranged in the groove 8 arranged on the supporting block 4, an outer heat preservation layer 5 for placing heat to radiate outwards is arranged on the inner wall of the heat preservation box body component 6, the outer heat preservation layer 5 is also made of aluminum silicate cotton, the heat preservation box body component 6 mainly comprises a supporting bottom plate 9, a left side plate 10, a right side plate 11, a cover plate 12 and a connecting piece 7, the left side plate 10 and the right side plate 11 are vertically arranged on the supporting bottom plate 9 through the connecting piece 7, the cover plate 12 is arranged at the top positions of the left side plate 10 and the right side plate 11 and is respectively connected with the left side plate 10 and the right side plate 11 through the connecting, The left side plate 10, the right side plate 11 and the cover plate 12 form a hollow rectangular cavity structure 13, the induction heating elements are arranged in the hollow rectangular cavity structure 13, when the induction heating coil is used specifically, the inner heat-insulating layer 2 can play a heat-insulating role for a stainless steel pipe to be annealed and can insulate the induction heating coil 1 from the stainless steel pipe so as to prevent the induction heating coil 1 and the stainless steel pipe to be annealed from being burnt out by ignition, the pouring layer 3 is formed by pouring high-temperature-resistant cement, when the induction heating coil works specifically, the pouring layer 3 can pour the induction heating coil 1 and the inner heat-insulating layer 2 into a whole through a copper pipe interturn gap 14 on the induction heating coil 1 (as shown in the attached figure 3 in the specification), the pouring layer 3 can play a heat-insulating role and can also prevent the phenomenon that the induction heating coil 1 is ignited between coil interturn coils (a copper pipe interturn gap 14 on the induction heating coil 1) during working (as shown, the support bottom plate 9, the left side plate 10, the right side plate 11 and the cover plate 12 in the heat preservation box body component 6 are made of mica plates (as shown in the attached figure 5 in the specification), the heat preservation box body component can resist high temperature of about 1000 ℃, the inner wall of the heat preservation box body component 6 is the outer heat preservation layer 5 made of aluminum silicate cotton, and therefore the effects of reducing energy loss and improving working environment are achieved through multiple heat preservation. The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims (7)

1. An induction heating device for annealing large-diameter stainless steel pipes is characterized by comprising an induction heating coil, an inner heat-insulating layer, a pouring layer, a supporting block, an outer heat-insulating layer and a heat-insulating box body component, wherein the induction heating coil is a spiral structural body formed by winding a copper pipe, the inner heat-insulating layer is arranged in the induction heating coil and is connected with the inner wall of the induction heating coil, the pouring layer is poured on the periphery of the induction heating coil and is connected with the induction heating coil, the pouring layer can pour the induction heating coil and the inner heat-insulating layer into an integral structure through inter-turn gaps of the copper pipe on the induction heating coil, the supporting block is arranged in the heat-insulating box body component and is fixedly connected with the heat-insulating box body component, a groove is formed in the supporting block, and the integral structure is, the outer heat-insulating layer is arranged on the inner wall of the heat-insulating box body component and is fixedly connected with the inner wall of the heat-insulating box body component.

2. The induction heating device for annealing large-diameter stainless steel pipes according to claim 1, wherein the heat-insulating box member comprises a supporting bottom plate, a left side plate, a right side plate, a cover plate and a connecting piece, the left side plate and the right side plate are mounted on the supporting bottom plate and connected with the supporting bottom plate through the connecting piece, the cover plate is mounted at the top of the left side plate and the right side plate and respectively connected with the left side plate and the right side plate through the connecting piece, and the supporting bottom plate, the left side plate, the right side plate and the cover plate form a hollow rectangular cavity structure.

3. The induction heating apparatus for annealing large-diameter stainless steel pipes according to claim 2, wherein the connecting member is an L-shaped structure.

4. The induction heating unit for annealing of large diameter stainless steel pipes as claimed in claim 2, wherein the support block is mounted on and fixedly connected to the support base plate within the hollow rectangular chamber structure.

5. The induction heating device for annealing large-diameter stainless steel pipes as claimed in claim 2, wherein the support bottom plate, the left side plate, the right side plate and the cover plate are made of mica plates.

6. The induction heating device for annealing large-diameter stainless steel pipes as claimed in claim 1, wherein the casting layer and the supporting block are made of high temperature resistant cement.

7. The induction heating device for annealing the large-diameter stainless steel pipe according to claim 1, wherein the inner insulating layer and the outer insulating layer are made of aluminum silicate cotton.

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