Electric heating core structure for controlling uniform sliding gap between electric heating tube and insulating ceramic bushing

Abstract

The utility model discloses an electric heating core structure for controlling a uniform sliding gap between an electric heating tube and an insulating ceramic bushing, which comprises a supporting plate, the supporting plate is provided with the electric heating tube through the insulating ceramic bushing, a first water-soluble paper ring is arranged between the supporting plate and the insulating ceramic bushing, and a second water-soluble paper ring is arranged between the supporting plate and the insulating ceramic bushing. A first water-soluble paper ring is arranged between the supporting plate and the electric heating tube, a second water-soluble paper ring is arranged between the insulating ceramic lining and the electric heating tube, and the sliding gap between the supporting plate and the insulating ceramic lining and the sliding gap between the electric heating tube and the insulating ceramic lining are accurately controlled. The electric heating core assembly prevents the insulation ceramic lining from being damaged and broken in the manufacturing process, is suitable for controlling the assembly positioning welding gap of the electric heating core equipment, can effectively protect the inner and outer surfaces of the insulation ceramic lining and the outer wall of the electric heating pipe, can reduce the replacement frequency of the electric heating core assembly, prolongs the service time of the electric heating equipment, and improves the production efficiency. Manpower and material resources are greatly saved, cost is reduced, and production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric heating cores, and particularly relates to an electric heating core structure for controlling the uniform sliding clearance between an electric heating tube and an insulating ceramic bushing. Background Technique

[0002] With the development of electric heating core technology, non-ferrous metals and precious metals (such as titanium, zirconium, niobium, tantalum, etc.) are increasingly used in electric heating core equipment. During the installation of electric heating core components, due to no clearance between the insulating ceramic bushing and the support plate and between the heating tube and the insulating ceramic bushing, when the equipment is started and runs, the temperature rises, and the heating tube expands and elongates thermally. If there is friction, it will drive the support plate to deform, and in severe cases, the insulating ceramic bushing will be crushed; conversely, when the equipment is shut down, the heating tube contracts and shortens, and if there is friction, it will also drive the support plate to deform, and the insulating ceramic bushing will also be crushed; long-term repeated friction will cause damage to the insulating ceramic bushing, shorten the service life of the electric heating core, cause greater economic losses, and even cause safety accidents.

[0003] At present, most manufacturers need to drill hundreds or even thousands or more holes on the equipment support plate when assembling large electric heating core equipment, and place the insulating ceramic bushing and the heating tube in the holes. It is very difficult to ensure that there is a certain clearance reserved between each insulating ceramic bushing and the heating tube during installation and positioning; even if there is a clearance in each hole, the deformation generated during the welding of the fixing plate and the support plate will further reduce the clearance between the heating tube and the insulating ceramic bushing and the clearance between the insulating ceramic bushing and the support plate, which will directly damage the surface of the insulating ceramic bushing and affect the insulation performance. The longer the equipment runs, the greater the harm to the heating tube with a thinner wall thickness or the insulating ceramic bushing with an easily worn surface, and it will also cause problems such as an increase in the cost of replacing the electric heating core components and an increase in the standby time of the equipment. Therefore, we propose an electric heating core structure for controlling the uniform sliding clearance between an electric heating tube and an insulating ceramic bushing. Content of the Utility Model

[0004] The purpose of the utility model is to provide an electric heating core structure for controlling the uniform sliding clearance between an electric heating tube and an insulating ceramic bushing, so as to solve the problems proposed in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an electric heating core structure for controlling the uniform sliding clearance between an electric heating tube and an insulating ceramic bushing, including a support plate, an electric heating tube is arranged on the support plate through an insulating ceramic bushing, a first water-soluble paper ring is arranged between the support plate and the insulating ceramic bushing, and a second water-soluble paper ring is arranged between the insulating ceramic bushing and the electric heating tube.

[0006] Preferably, through holes are formed in the support plate, and the insulating ceramic bushing is arranged in the through holes.

[0007] Preferably, fixing blocks are arranged at both the upper and lower ends of the support plate corresponding to the through holes.

[0008] Preferably, the electric heating tube is inserted on the insulating ceramic bushing through the second water-soluble paper ring.

[0009] Preferably, the support plate is a support plate made of heat-resistant austenitic alloy material.

[0010] Preferably, the insulating ceramic bushing is a bushing made of high-temperature resistant ceramic material.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] A first water-soluble paper ring is arranged between the support plate and the insulating ceramic bushing of the present utility model, and a second water-soluble paper ring is arranged between the insulating ceramic bushing and the electric heating tube. By the water flow contacting the first water-soluble paper ring and the second water-soluble paper ring, it can be eliminated without residue, ensuring the gaps between the support plate and the insulating ceramic bushing and between the electric heating tube and the insulating ceramic bushing. Since the first water-soluble paper ring and the second water-soluble paper ring protect the inner and outer surfaces of the insulating ceramic bushing, preventing the insulating ceramic bushing from being damaged and broken during the manufacturing process, it greatly improves the safety and service life of the electric heating core for later use. The present utility model is mainly applicable to the control of the assembly positioning welding gap of the electric heating core device, and can also effectively protect the inner and outer surfaces of the insulating ceramic bushing and the outer wall of the electric heating tube. It can reduce the replacement times of the electric heating core components, increase the use time of the electric heating equipment, save a large amount of manpower and material resources, reduce costs, and increase production efficiency. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the electric heating core of the present utility model;

[0014] Figure 2 is Figure 1 the enlarged structural diagram of A in

[0015] In the figure: 1, support plate; 2, insulating ceramic bushing; 3, electric heating tube; 4, first water-soluble paper ring; 5, second water-soluble paper ring; 6, through hole; 7, fixing block. Specific Embodiments

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0017] Please refer to Figures 1-2 The electric heating core structure provided by the present utility model for controlling the uniform sliding gap between the electric heating tube and the insulating ceramic bushing includes a support plate 1. The support plate 1 is a support plate made of heat-resistant austenitic alloy material, which has excellent oxidation resistance in high-temperature environments. An electric heating tube 3 is arranged on the support plate 1 through an insulating ceramic bushing 2. The insulating ceramic bushing 2 is a bushing made of high-temperature-resistant ceramic material, which has the advantages of high insulation resistivity and high electric strength. A through hole 6 is formed on the support plate 1, and the insulating ceramic bushing 2 is arranged in the through hole 6. Fixed blocks 7 are arranged at both the upper and lower ends of the support plate 1 corresponding to the through hole 6. A first water-soluble paper ring 4 is arranged between the support plate 1 and the insulating ceramic bushing 2. The electric heating tube 3 is inserted on the insulating ceramic bushing 2 through a second water-soluble paper ring 5. A second water-soluble paper ring 5 is arranged between the insulating ceramic bushing 2 and the electric heating tube 3. The water-soluble paper has the characteristics of being alkaline, white, odorless, and has strong moisture absorption. After use, it can be completely or partially dissolved within a very short time by flushing with water and will not cause blockage.

[0018] The present utility model arranges a first water-soluble paper ring 4 between the support plate 1 and the insulating ceramic bushing 2, and a second water-soluble paper ring 5 between the insulating ceramic bushing 2 and the electric heating tube 3. Since the support plate 1 cannot directly fix the insulating ceramic bushing 2, the insulating ceramic bushing 2 can only be clamped by welding the fixed block 7 on the support plate 1. To ensure that there is a certain gap between the insulating ceramic bushing 2 and the support plate 1 when welding the fixed block 7, and at the same time to protect the outer wall of the insulating ceramic bushing 2 from being scratched and worn by the support plate 1, the first water-soluble paper ring 4 needs to be placed in advance between the insulating ceramic bushing 2 and the support plate 1. Similarly, when inserting the electric heating tube 3, the second water-soluble paper ring 5 also needs to be positioned and placed in advance on the inner wall of the insulating ceramic bushing 2 to ensure that the outer wall of the electric heating tube 3 does not directly touch the inner wall of the insulating ceramic bushing 2, preventing damage caused by friction on the surface of the insulating ceramic bushing 2. After the later installation, positioning and welding of the electric heating core device are all completed, the first water-soluble paper ring 4 and the second water-soluble paper ring 5 can be eliminated by contacting with water flow without residue, ensuring the gap between the support plate 1 and the insulating ceramic bushing 2 and between the electric heating tube 3 and the insulating ceramic bushing 2. Since the first water-soluble paper ring 4 and the second water-soluble paper ring 5 protect the inner and outer surfaces of the insulating ceramic bushing 2, preventing the insulating ceramic bushing 2 from being damaged and broken during the manufacturing process, it also greatly improves the safety and service life of the electric heating core for later use. The present utility model is mainly applicable to the control of the assembly, positioning and welding gap of the electric heating core device, and can also effectively protect the inner and outer surfaces of the insulating ceramic bushing and the outer wall of the electric heating tube, which can reduce the replacement times of the electric heating core components, increase the use time of the electric heating equipment, save a large amount of manpower and material resources, reduce costs and increase production efficiency.

[0019] The present utility model has the following beneficial effects:

[0020] 1. The utility model has an accurate gap control ability, which can control the reserved gap of the electric heating device without being affected by external factors (such as welding deformation), solves the problem of insufficient gap between the insulating ceramic bushing and the electric heating tube during the positioning of the electric heating core device, solves the problem of easy scratching and damage on the surfaces of the electric heating tube and the insulating ceramic bushing during the welding of the electric heating core device, and solves the problem of insufficient gap between the support plate and the insulating ceramic bushing during the installation of the electric heating core device;

[0021] 2. The utility model is widely applicable, and can be used in vertical devices, horizontal devices, stacked devices, etc.;

[0022] 3. When the utility model is used, the preparation period is short, the operation is simple and fast, and the work efficiency can be greatly improved;

[0023] 4. The utility model has good protection measures for the ceramic insulation, can reduce the damage to the inner and outer surfaces of the insulating ceramic bushing, and solves the problem of easy wear of the electric heating tube and the insulating ceramic bushing during the operation of the electric heating core device.

[0024] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An electric heating core structure for controlling the uniform sliding clearance between an electric heating tube and an insulating ceramic bushing, characterized in that, It includes a support plate (1), on which an electric heating tube (3) is arranged through an insulating ceramic bushing (2). A first water-soluble paper ring (4) is arranged between the support plate (1) and the insulating ceramic bushing (2), and a second water-soluble paper ring (5) is arranged between the insulating ceramic bushing (2) and the electric heating tube (3).

2. The electric heating core structure for controlling the uniform sliding gap between the electric heating tube and the insulating ceramic bushing according to claim 1, wherein: A through hole (6) is formed on the support plate (1), and the insulating ceramic bushing (2) is arranged in the through hole (6).

3. The electric heating core structure for controlling the uniform sliding clearance between the electric heating tube and the insulating ceramic bushing according to claim 2, wherein: Fixing blocks (7) are arranged at both the upper and lower ends of the support plate (1) corresponding to the through hole (6).

4. An electric heating core structure for controlling the uniform sliding clearance between an electric heating tube and an insulating ceramic bushing according to claim 1, characterized in that: The electric heating tube (3) is inserted on the insulating ceramic bushing (2) through the second water-soluble paper ring (5).

5. The electric heating core structure for controlling the uniform sliding gap between the electric heating tube and the insulating ceramic bushing according to claim 1, characterized in that: The support plate (1) is a support plate prepared from a heat-resistant austenitic alloy material.

6. The electric heating core structure for controlling the uniform sliding clearance between the electric heating tube and the insulating ceramic bushing according to claim 1, characterized in that: The insulating ceramic bushing (2) is a bushing prepared from a high-temperature resistant ceramic material.

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