Supporting center cylinder structure suitable for winding pipe type electric heater

Abstract

The utility model discloses a supporting center cylinder structure suitable for a winding pipe type electric heater, which comprises a front center cylinder body, a concentric reducing head and a rear center cylinder body, the front center cylinder body is connected with the rear center cylinder body through the concentric reducing head, a flow guide plate is arranged in the concentric reducing head, and the front center cylinder body is connected with the rear center cylinder body through the flow guide plate. An inner interlayer connected with the flow guide plate is arranged in the rear center cylinder, and a flow guide channel is formed among the concentric reducing head, the rear center cylinder, the flow guide plate and the inner interlayer; through holes distributed in an annular array are formed in the concentric reducing head and the rear center cylinder, so that the weight of the supporting center cylinder structure is reduced, and the overall equipment mass of the electric heater is further reduced; a flow guide channel is formed among the concentric reducing head, the rear center cylinder, the flow guide plate and the inner interlayer, the heat exchange area of the center cylinder is increased, the heat exchange efficiency is improved, meanwhile, the temperature of the center cylinder is reduced, the service life of the electric heater is prolonged, and the supporting function of the center cylinder is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric heaters, and in particular relates to a supporting central tube structure suitable for a winding tube type electric heater. Background Art

[0002] Electric heating is the process of converting electrical energy into thermal energy. Since the discovery that power can produce thermal effects through wires, many inventors in the world have been engaged in the research and manufacture of various electric heating appliances. Electric heaters are mainly used in heating, industrial production, aerospace industry, transportation, military field, etc.

[0003] The supporting center tube structure electric heater is a tube structure that supports the electric heating tube. The existing supporting center tube structure is made of a whole steel plate, which makes the electric heater heavy. In addition, the temperature of the supporting center tube inside the electric heater shell is high, which easily causes the strength and stiffness of the supporting center tube to decrease after high temperature, resulting in thermal stress displacement. For this reason, we propose a supporting center tube structure suitable for wound tube electric heaters. Utility Model Content

[0004] The purpose of the utility model is to provide a supporting central tube structure suitable for a wound tube type electric heater, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a supporting center cylinder structure suitable for a wound tubular electric heater, comprising a front center cylinder, a concentric reducer and a rear center cylinder, wherein the front center cylinder and the rear center cylinder are connected by the concentric reducer, a guide plate is arranged inside the concentric reducer, an inner interlayer connected to the guide plate is arranged inside the rear center cylinder, and a guide channel is formed between the concentric reducer, the rear center cylinder, the guide plate and the inner interlayer;

[0006] The concentric reducer and the rear center cylinder are both provided with through holes distributed in a ring array.

[0007] Preferably, the front central cylinder, the concentric reducer and the rear central cylinder are fixedly connected by welding.

[0008] Preferably, the outer diameter of the front central cylinder is smaller than the outer diameter of the rear central cylinder.

[0009] Preferably, a sealing plate is provided on one end of the rear center cylinder away from the concentric reducer.

[0010] Preferably, the guide plate is a conical structure.

[0011] Preferably, the inner interlayer is made of rolled thin plates.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model has through holes distributed in a circular array on both the concentric reducer and the rear center cylinder, which reduces the weight of the supporting center cylinder structure and thus reduces the overall equipment quality of the electric heater;

[0014] 2. The utility model is provided with a guide plate and an inner interlayer, and a guide channel is formed between the concentric reducer, the rear center cylinder, the guide plate and the inner interlayer. The heating medium enters the guide channel of the concentric reducer through the through hole on the concentric reducer, and then smoothly enters between the rear center cylinder and the inner interlayer through the guide plate, exchanges heat with the supporting center cylinder structure, and then goes out through the through hole, thereby increasing the heat exchange area of ​​the center cylinder, improving the heat exchange efficiency, reducing the center cylinder temperature, and increasing the service life of the electric heater, ensuring the realization of the center cylinder support function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 4 It is a cross-sectional structural schematic diagram of the utility model.

[0019] In the figure: 1. front center cylinder; 2. concentric reducer; 3. rear center cylinder; 4. guide plate; 5. inner interlayer; 6. through hole; 7. sealing plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 4The utility model provides a supporting center cylinder structure suitable for a wound tube electric heater, comprising a front center cylinder 1, a concentric reducer 2 and a rear center cylinder 3, wherein the front center cylinder 1 and the rear center cylinder 3 are connected via the concentric reducer 2, and the front center cylinder 1, the concentric reducer 2 and the rear center cylinder 3 are fixedly connected via welding, wherein the outer diameter of the front center cylinder 1 is smaller than the outer diameter of the rear center cylinder 3, and a sealing plate 7 is arranged at one end of the rear center cylinder 3 away from the concentric reducer 2, and a guide plate 4 is arranged in the concentric reducer 2, and the guide plate 4 is a conical structure, and an inner interlayer 5 connected to the guide plate 4 is arranged in the rear center cylinder 3, and the inner interlayer 5 is made of a thin plate, and a guide channel is formed between the concentric reducer 2, the rear center cylinder 3, the guide plate 4 and the inner interlayer 5;

[0022] The concentric reducer 2 and the rear center cylinder 3 are both provided with through holes 6 distributed in a ring array.

[0023] The utility model has through holes 6 distributed in a circular array on both the concentric reducer 2 and the rear center cylinder 3, which reduces the weight of the supporting center cylinder structure, thereby reducing the overall equipment quality of the electric heater;

[0024] The utility model is provided with a guide plate 4 and an inner interlayer 5, and a guide channel is formed among the concentric reducer 2, the rear center cylinder 3, the guide plate 4 and the inner interlayer 5. The heated medium enters the guide channel of the concentric reducer 2 through the through hole 6 on the concentric reducer 2, and then smoothly enters between the rear center cylinder 3 and the inner interlayer 5 through the guide plate 4, exchanges heat with the supporting center cylinder structure, and then goes out through the through hole 6, thereby increasing the heat exchange area of ​​the center cylinder, improving the heat exchange efficiency, reducing the center cylinder temperature at the same time, increasing the service life of the electric heater, and ensuring the realization of the center cylinder support function.

[0025] To summarize, the present embodiment provides a method for using a supporting center tube structure suitable for a wound tubular electric heater: the medium to be heated enters the guide channel of the concentric reducer 2 through the through hole 6 on the concentric reducer 2, then smoothly enters between the rear center tube body 3 and the inner interlayer 5 through the guide plate 4, exchanges heat with the supporting center tube structure, and then exits through the through hole 6.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A supporting central tube structure suitable for a wound tube electric heater, characterized in that: The invention comprises a front central cylinder (1), a concentric reducer (2) and a rear central cylinder (3), wherein the front central cylinder (1) and the rear central cylinder (3) are connected via the concentric reducer (2), a guide plate (4) is arranged inside the concentric reducer (2), an inner interlayer (5) connected to the guide plate (4) is arranged inside the rear central cylinder (3), and a guide channel is formed between the concentric reducer (2), the rear central cylinder (3), the guide plate (4) and the inner interlayer (5); The concentric reducer (2) and the rear center cylinder (3) are both provided with through holes (6) distributed in a ring array.

2. A supporting central tube structure suitable for a wound tube electric heater according to claim 1, characterized in that: The front central cylinder (1), the concentric reducer (2) and the rear central cylinder (3) are fixedly connected by welding.

3. The supporting central tube structure for a wound tube electric heater according to claim 1, characterized in that: The outer diameter of the front central cylinder (1) is smaller than the outer diameter of the rear central cylinder (3).

4. The supporting central tube structure for a wound tube electric heater according to claim 1, characterized in that: A sealing plate (7) is provided on the end of the rear center cylinder (3) away from the concentric reducer (2).

5. The supporting central tube structure for a wound tube electric heater according to claim 1, characterized in that: The guide plate (4) is a conical structure.

6. The supporting central tube structure for a wound tube electric heater according to claim 1, characterized in that: The inner interlayer (5) is made of rolled thin plates.

Images