Heating rod in fluidized bed

Abstract

The utility model relates to the technical field of electric heating tubes, in particular to an internal heating rod of a fluidized bed, which comprises a heating tube joint, a magnesium oxide guide post, a heating tube body, an external winding resistance wire, a magnesium rod and an electric wire, the magnesium oxide guide post is arranged in the heating tube joint, the heating tube body is connected with the heating tube joint, and the magnesium rod is arranged in the heating tube body. The externally-wound resistance wire is wound on the outer wall of the magnesium rod, one end of the electric wire penetrates through the magnesium oxide guide column and is connected with the externally-wound resistance wire, and therefore the technical problems that in the prior art, a heating rod in a fluidized bed is short in service life, a protection tube is insufficient in strength in a high-temperature corrosive environment, and magnesium oxide powder is poor in stability and insulativity at high temperature are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric heating tube technical field especially relates to a heating rod in fluidized bed. BACKGROUND

[0002] Fluidized bed, full name fluidized bed, is a kind of reactor using gas or liquid through granular solid layer, make solid particles be in suspended motion state, and carry out gas-solid phase or liquid-solid phase reaction process.In fluidized bed equipment, electric heating rod as key component, its performance is directly related to the running efficiency and cost benefit of equipment.

[0003] However, in the prior art, there are a series of problems in the heating rod used in the fluidized bed.Firstly, the service life of the heating rod is generally short, and ordinary nickel-based resistance wire is oxidized and broken.Secondly, in high-temperature corrosive environment, the strength of the protection tube of the heating rod is often insufficient, which is easy to be damaged, thereby affecting the stability and service life of the heating rod.In addition, the stability and insulation of magnesium oxide powder inside the heating rod at high temperature are also poor, which may cause the heating efficiency to decrease, and even cause safety hazards.

[0004] In summary, the existing heating rod in the fluidized bed has the problems of short service life, insufficient strength of the protection tube in high-temperature corrosive environment and poor stability and insulation of magnesium oxide powder at high temperature. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of heating rod in fluidized bed, to solve the technical problems that the service life of the heating rod in the fluidized bed in prior art is short, the strength of protection tube is insufficient in high-temperature corrosive environment and the stability and insulation of magnesium oxide powder are poor at high temperature.

[0006] To achieve the above-mentioned purpose, the utility model adopts a kind of heating rod in fluidized bed, including heating pipe joint, magnesium oxide guide column, heating pipe body, outer winding resistance wire, magnesium rod and electric wire, the magnesium oxide guide column is arranged in the heating pipe joint, the heating pipe body is connected with the heating pipe joint, the magnesium rod is arranged in the heating pipe body, the outer winding resistance wire is wound on the outer wall of the magnesium rod, one end of the electric wire penetrates the magnesium oxide guide column and is connected with the outer winding resistance wire.

[0007] Among them, the heating rod in the fluidized bed further includes plug, and the plug is arranged at one end of the heating pipe body away from the heating pipe joint.

[0008] Among them, the outer winding resistance wire is kan tai nickel-based alloy resistance wire, the material of the heating pipe body is 310S material, the magnesium oxide guide column and the magnesium rod are made of high-temperature resistant magnesium oxide powder.

[0009] The diameter of the magnesium rod is 14mm, and the distance between the outer resistance wire and the inner wall of the heating pipe body is 3mm.

[0010] The fluidized bed inner heating rod further comprises an assembling assembly, the assembling assembly comprises a supporting plate, a screw rod, an abutting piece and two connecting pieces, the heating pipe joint comprises an upper cover body and a lower cover body, the supporting plate is provided with a groove and two through holes, the two connecting pieces are respectively connected with the corresponding through holes in a sliding mode, and the two connecting pieces are respectively fixedly connected with the upper cover body and the lower cover body, the connecting piece is provided with an abutting hole, the screw rod is threadedly connected with the supporting plate, the screw rod is rotationally connected with the abutting piece, and the abutting piece is provided with two abutting arc surfaces which are in contact with the corresponding abutting holes.

[0011] The assembling assembly further comprises a force applying piece, and the force applying piece is fixedly connected with one end of the screw rod which is away from the abutting piece.

[0012] The fluidized bed inner heating rod of the utility model adopts the kanthal nickel-based alloy resistance wire, and the comprehensive performance is more superior, the service life of the product can be better improved, the heating pipe body is made of 310S material, has the characteristics of better oxidation resistance, high temperature resistance and corrosion resistance, the strength of the product can be better maintained, the service life is prolonged, the magnesium oxide guide column and the magnesium rod use high-temperature-resistant magnesium oxide powder, the working capacity of the heating pipe under high-temperature environment is ensured, and in addition, the outer resistance wire adopts the processing technology of electric winding. The heat transfer out of the pipe body is shortened, the heat accumulation in the heating pipe is reduced, the service life can be better prolonged, the energy utilization efficiency is improved, and the technical problems of short service life, insufficient protection pipe strength in high-temperature corrosive environment and poor stability and insulation of magnesium oxide powder under high temperature in the prior art are solved. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0014] Fig. 1 It is the structure schematic view of the fluidized bed inner heating rod without assembling assembly of the utility model.

[0015] Fig. 2 It is the partial structure schematic view of the fluidized bed inner heating rod of the utility model.

[0016] Fig. 3It is partial structure schematic view of the heating rod in the fluidized bed of the utility model.

[0017] 101-heating pipe joint, 102-magnesium oxide guide column, 103-heating pipe body, 104-outer resistance wire, 105-magnesium rod, 106-wire, 107-plug, 108-branch plate, 109-screw rod, 110-resisting piece, 111-connecting piece, 112-upper cover body, 113-lower cover body, 114-groove, 115-through hole, 116-resisting hole, 117-resisting camber, 118-force applying piece. DETAILED DESCRIPTION

[0018] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, the embodiments described below are exemplary, and are intended to explain the utility model, and can not be understood as the limitation of the utility model.

[0019] Please refer to Figs. 1-3 , wherein Fig. 1 It is the structure schematic view of the heating rod in the fluidized bed of the utility model without assembly component. Fig. 2 It is partial structure schematic view of the heating rod in the fluidized bed of the utility model. Fig. 3 It is partial structure schematic view of the heating rod in the fluidized bed of the utility model.

[0020] The utility model provides a kind of heating rod in fluidized bed, including heating pipe joint 101, magnesium oxide guide column 102, heating pipe body 103, outer resistance wire 104, magnesium rod 105 and wire 106, the magnesium oxide guide column 102 is arranged in the heating pipe joint 101, the heating pipe body 103 is connected with the heating pipe joint 101, the magnesium rod 105 is arranged in the heating pipe body 103, the outer resistance wire 104 is wound in the outer wall of the magnesium rod 105, one end of the wire 106 is penetrated through the magnesium oxide guide column 102, and is connected with the outer resistance wire 104;

[0021] The heating rod in the fluidized bed further includes plug 107, the plug 107 is arranged at one end of the heating pipe body 103 away from the heating pipe joint 101;

[0022] The outer resistance wire 104 is kan tai nickel base alloy resistance wire, the material of the heating pipe body 103 is 310S material, the magnesium oxide guide column 102 and the magnesium rod 105 are made of high-temperature resistant magnesium oxide powder;

[0023] The diameter of the magnesium rod 105 is 14mm, the distance between the outer resistance wire 104 and the inner wall of the heating pipe body 103 is 3mm.

[0024] For this specific embodiment, the adopted Contel nickel-based alloy resistance wire has more superior comprehensive performance, and can better improve the service life of the product, the heating pipe body 103 is made of 310S material, has better oxidation resistance, high temperature resistance and corrosion resistance, can better maintain the strength of the product, prolong the service life, the magnesium oxide guide column 102 and the magnesium rod 105 use high temperature resistant magnesium oxide powder, ensure the working ability of the heating pipe in high temperature environment, and the outer winding resistance wire 104 adopts the processing technology of electric winding. Shorten the distance of heat transfer out of the pipe body, reduce the accumulation of heat in the heating pipe, can better prolong the service life, improve the energy utilization efficiency, in this way, the technical problems of short service life of the heating rod in the fluidized bed, insufficient strength of the protection pipe in the high temperature corrosive environment and poor stability and insulation of the magnesium oxide powder in the high temperature are solved.

[0025] The magnesium rod 105 is changed to an open mold customized super conventional φ14*550mm long inner core magnesium rod 105, the outer winding resistance wire 104 is wound on the outer wall of the magnesium rod 105, so that the outer winding resistance wire 104 is arranged outside the magnesium rod 105 with φ14, the maximum distance between the outer winding resistance wire 104 and the inner wall of the heating pipe body 103 is changed to 3mm, and the magnesium rod 105 has no heating wire, so that the distance between the outer winding resistance wire 104 and the shell is greatly reduced, the temperature difference between the inner core of the magnesium rod 105 and the heating pipe body 103 is also greatly reduced, the heat conduction efficiency is improved, and it is more durable in high temperature environment.

[0026] Among them, the heating rod in the fluidized bed further comprises an assembly assembly, the assembly assembly comprises a support plate 108, a screw rod 109, a bearing piece 110 and two connecting pieces 111, the heating pipe joint 101 comprises an upper cover body 112 and a lower cover body 113, the support plate 108 has a groove 114 and two through holes 115, two connecting pieces 111 are respectively connected with the corresponding through hole 115, and two connecting pieces 111 are respectively connected with the upper cover body 112 and the lower cover body 113, the connecting piece 111 has a bearing hole 116, the screw rod 109 is threadedly connected with the support plate 108, the screw rod 109 is rotatably connected with the bearing piece 110, and the bearing piece 110 has two bearing arc surfaces 117, and the bearing arc surface 117 is in contact with the corresponding bearing hole 116.

[0027] For this specific embodiment, in specific use, by rotating the screw rod 109, the screw rod 109 drives the abutting piece 110 to move, the two abutting arc surfaces 117 on the abutting piece 110 abut the corresponding abutting holes 116 respectively, thereby driving the corresponding connecting pieces 111 to move, so that the two connecting pieces 111 slide in the corresponding through holes 115 respectively, thereby driving the two upper cover bodies 112 and the lower cover body 113 to approach each other, completing assembly, and vice versa, facilitating disassembly, so as to facilitate replacement of the magnesium oxide guide column 102, and facilitate disassembly of the heating pipe body 103 and the heating pipe joint 101.

[0028] Secondly, the assembly assembly further comprises a force applying piece 118, which is fixedly connected with one end of the screw rod 109 away from the abutting piece 110.

[0029] For this specific embodiment, in specific use, by arranging the force applying piece 118, the screw rod 109 can be more conveniently rotated.

[0030] The fluidized bed inner heating rod of the utility model adopts the superior comprehensive performance of the kanthal nickel-based alloy resistance wire, can better improve the service life of the product, the heating pipe body 103 is made of 310S material, has the characteristics of better oxidation resistance, high temperature resistance and corrosion resistance, can better maintain the strength of the product, prolong the service life, the magnesium oxide guide column 102 and the magnesium rod 105 use high-temperature-resistant magnesium oxide powder, ensure the working ability of the heating pipe to run persistently in a high-temperature environment, and the outer resistance wire 104 adopts an electrical outer winding processing technology, shortens the distance of heat transfer out of the pipe body, reduces the accumulation of heat in the heating pipe, can better prolong the service life and improve the energy utilization efficiency, and in this way, the technical problems of short service life, insufficient protection pipe strength in a high-temperature corrosive environment and poor stability and insulation of magnesium oxide powder in a high-temperature environment in the prior art are solved.

[0031] The above disclosure is only a preferred embodiment of the utility model, and of course cannot limit the scope of the utility model, and those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the utility model claims still belong to the scope covered by the utility model.

Claims

1. A heating rod for a fluidized bed, characterized in that, The device includes a heating tube connector, a magnesium oxide guide post, a heating tube body, an externally wound resistance wire, a magnesium rod, and an electric wire. The magnesium oxide guide post is disposed inside the heating tube connector, the heating tube body is connected to the heating tube connector, the magnesium rod is disposed inside the heating tube body, the externally wound resistance wire is wound around the outer wall of the magnesium rod, and one end of the electric wire passes through the magnesium oxide guide post and is connected to the externally wound resistance wire.

2. The fluidized bed heating rod as described in claim 1, characterized in that, The heating rod in the fluidized bed also includes a plug, which is located at the end of the heating tube body away from the heating tube joint.

3. The fluidized bed heating rod as described in claim 2, characterized in that, The externally wound resistance wire is a Kanthal nickel-based alloy resistance wire, the heating tube body is made of 310S material, and the magnesium oxide conductor and the magnesium rod are both made of high-temperature resistant magnesium oxide powder.

4. The fluidized bed heating rod as described in claim 3, characterized in that, The magnesium rod has a diameter of 14 mm, and the distance between the outer winding resistance wire and the inner wall of the heating tube is 3 mm.

5. The fluidized bed heating rod as described in claim 4, characterized in that, The heating rod in the fluidized bed also includes an assembly component, which includes a support plate, a screw, a retaining member, and two connecting members. The heating pipe connector includes an upper cover and a lower cover. The support plate has a groove and two through holes. The two connecting members are slidably connected to the corresponding through holes, and the two connecting members are fixedly connected to the upper cover and the lower cover, respectively. The connecting member has a retaining hole. The screw is threaded to the support plate and rotatably connected to the retaining member. The retaining member has two retaining arc surfaces, and the retaining arc surfaces contact the corresponding retaining holes.

6. The fluidized bed heating rod as described in claim 5, characterized in that, The assembly component also includes a force-applying element, which is fixedly connected to the end of the screw away from the abutment.

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