A double-jacketed heating tube

Abstract

The utility model provides a kind of bushing type heating pipe, it is related to heating pipe structure technical field, including heating wire, insulating filling layer and metal sleeve, the heating wire, insulating filling layer and metal sleeve are constituted from inside to outside, the periphery of the metal sleeve is provided with several heat exchange grooves along length direction, the metal sleeve is divided into several heating spaces by the establishment of heat exchange groove, heating wire is mounted in each described heating space, the metal sleeve one end is provided with circular heat exchange groove along length direction, ceramic partition is equipped between heat exchange groove inside end and metal sleeve inner wall;By the establishment of several heat exchange grooves along length direction in the periphery of metal sleeve, the metal sleeve is divided into several heating spaces by the establishment of heat exchange groove, greatly increase the contact area of metal sleeve and heating medium, to improve heating effect, especially suitable for the application scene needing high efficiency heating.

Description

Technical Field

[0001] This utility model relates to the field of heating tube structure technology, and in particular to a sleeve-type heating tube. Background Technology

[0002] Sheathed heating elements are a common type of electric heating element, widely used in various heating scenarios, and have advantages such as high heating efficiency and safe use. Their basic structure consists of the following layers from the inside out: the inner layer is the heating wire, which is responsible for the core heating task; the middle layer is an insulating filler layer, effectively isolating the heating wire from the metal sheath to prevent leakage; the outer layer is the metal sheath, which serves both a protective function and is responsible for heat dissipation and structural strength; the ports are equipped with sealing structures and lead terminals to ensure the safety and stability of the heating element during use.

[0003] Currently, most shell-and-tube heating tubes adopt a circular metal sleeve design, which limits the contact area with the heating medium. This results in limited heating effect, especially in applications requiring high-efficiency heating, where the heating effect is unsatisfactory. Therefore, we propose a shell-and-tube heating tube. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, increase the contact area with the heating medium, and improve the heating effect of the sleeve-type heating tube.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sleeve-type heating tube includes a heating wire, an insulating filling layer, and a metal sleeve. The heating wire, insulating filling layer, and metal sleeve are formed from the inside out. The outer periphery of the metal sleeve has several heat exchange grooves along its length, which divide the interior of the metal sleeve into several heating spaces. A heating wire is installed in each heating space. A circular heat exchange groove is formed at one end of the metal sleeve along its length, and a ceramic separator is provided between the inner end of the heat exchange groove and the inner wall of the metal sleeve.

[0007] Furthermore, the heat exchange tank has a V-shaped cross-section.

[0008] Furthermore, the heating wire is spiral-shaped.

[0009] Furthermore, the circular heat exchange groove extends to the sealing end seat at the other end of the metal sleeve, and a plurality of ceramic insulating sleeves are installed inside the sealing end seat.

[0010] Furthermore, each heating wire corresponds to and is installed with a ceramic insulating sleeve, and the outer side of the sealing end is connected to the heating wire wire connected to the heating wire.

[0011] Furthermore, the insulating filler layer is filled within the heating space between the heating wire and the inner wall of the metal sleeve.

[0012] Furthermore, the circular heat exchange groove is opened near the sealing end seat.

[0013] Furthermore, the ceramic separators separate adjacent heating spaces to form individual heating spaces.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By opening several heat exchange grooves along the length of the metal sleeve, the interior of the metal sleeve is divided into several heating spaces, which greatly increases the contact area between the metal sleeve and the heating medium, thereby improving the heating effect. It is especially suitable for applications that require high-efficiency heating.

[0016] Furthermore, the circular heat exchange groove also increases the contact area between the metal sleeve and the heating medium, thereby improving the heating effect and preventing heat from being stored inside the metal sleeve and unable to be released.

[0017] 2. Each heating space is equipped with a heating wire, and the heating wire is spiral-shaped. This structure can make the heating more uniform and improve the heating efficiency.

[0018] 3. A ceramic separator is provided between the inner end of the heat exchange tank and the inner wall of the metal sleeve. The ceramic separator separates the adjacent heating spaces to form an independent heating space. At the same time, the insulating filling layer is filled in the heating space between the heating wire and the inner wall of the metal sleeve, which effectively isolates the heating wire and the metal sleeve, prevents leakage, and ensures the safety of use.

[0019] In summary, the improved sleeve-type heating tube of this utility model has significantly improved heating efficiency, safety and structural rationality, and can better meet the needs of various heating scenarios, thus possessing practicality. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of a sleeve-type heating tube provided by this utility model;

[0021] Figure 2 A plan view of one end of the metal sleeve of a sleeve-type heating tube provided by this utility model;

[0022] Figure 3 A schematic diagram of the internal anatomy of the metal sleeve of a sleeve-type heating tube provided by this utility model;

[0023] Figure 4 A schematic diagram of the other end of the overall structure of a sleeve-type heating tube provided by this utility model.

[0024] Legend: 1. Heating wire;

[0025] 2. Insulating filler layer;

[0026] 3. Metal sleeve;

[0027] 4. Heat exchange tank;

[0028] 5. Heating space;

[0029] 6. Circular heat exchange trough;

[0030] 7. Ceramic separators;

[0031] 8. Sealed end cap; 81. Ceramic insulating sleeve; 82. Heating wire lead. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0033] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0036] like Figure 1-4As shown, based on the existing sleeve-type heating tube, it includes a heating wire 1, an insulating filling layer 2 and a metal sleeve 3, which are formed from the inside to the outside.

[0037] This utility model provides a technical solution: a plurality of heat exchange grooves 4 are provided on the periphery of the metal sleeve 3 along the length direction. The opening of the heat exchange grooves 4 divides the interior of the metal sleeve 3 into a plurality of heating spaces 5. A heating wire 1 is installed in each heating space 5. This structure greatly increases the contact area between the metal sleeve 3 and the heating medium, making the heating more efficient. A circular heat exchange groove 6 is provided at one end of the metal sleeve 3 along the length direction, which also increases the contact area between the metal sleeve 3 and the heating medium. A ceramic separator 7 is provided between the inner end of the heat exchange groove 4 and the inner wall of the metal sleeve 3. The ceramic separator 7 isolates adjacent heating spaces 5, prevents mutual interference between different heating spaces 5, and ensures that each heating space 5 can carry out heating work independently and stably. Example

[0038] like Figure 1-4 As shown, the heat exchange tank 4 has a V-shaped cross-section. The V-shaped design of the heat exchange tank 4 can further increase the contact area with the heating medium and facilitate the flow of the heating medium, thereby improving the heat exchange efficiency.

[0039] The heating wire 1 is spiral-shaped. The spiral heating wire 1 can make the heat more evenly distributed in the heating space 5, avoiding local overheating or undercooling, thereby improving the overall heating effect.

[0040] The circular heat exchange trough 6 extends to the sealing end seat 8 at the other end of the metal sleeve 3. Several ceramic insulating sleeves 81 are installed inside the sealing end seat 8. The ceramic insulating sleeves 81 have good insulation performance and can effectively prevent leakage between the heating wire 1 and the metal sleeve 3, ensuring safe use.

[0041] Each heating wire 1 corresponds to a ceramic insulating sleeve 81 and is installed. This one-to-one installation method can ensure that each heating wire 1 is reliably insulated. The outer side of the sealing end seat 8 is connected to the heating wire wire 82 connected to the heating wire 1. The heating wire wire 82 is used to connect the heating wire 1 to an external power source to realize the transmission of electrical energy and make the heating wire wire 82 heat up.

[0042] The insulating filling layer 2 is located between the heating wire 1 and the inner wall of the metal sleeve 3 within the heating space 5. The insulating filling layer 2 not only provides insulation and prevents leakage, but also fills the gaps within the heating space 5.

[0043] The circular heat exchange trough 6 is located near the sealing end seat 8. This design facilitates the relevant electrical connections and sealing operations at the sealing end seat 8, and also promotes the flow of the heating medium and the transfer of heat.

[0044] The adjacent heating spaces 5 are separated by ceramic separators 7, forming individual heating spaces 5. Each individual heating space 5 can independently control its heating power and time, meeting different heating needs and improving the versatility and flexibility of the heating element.

[0045] The working process of this utility model is as follows: When using a sleeve-type heating tube, firstly, the heating tube is installed in the equipment that needs to be heated, ensuring that the heating tube is in full contact with the heating medium. Then, the heating wire 1 is connected to an external power source through the heating wire 82 on the outside of the sealing end seat 8. After the power is turned on, the heating wire 1 starts to heat up. Since the heating wire 1 is spiral-shaped and evenly distributed in each heating space 5, the heat can be evenly distributed to the heating space 5.

[0046] The heat exchange groove 4 around the metal sleeve 3 increases the contact area with the heating medium. The V-shaped heat exchange groove 4 design is more conducive to the flow of the heating medium, so that heat can be transferred to the heating medium more quickly, improving the heat exchange efficiency. At the same time, the ceramic partition 7 separates the adjacent heating spaces 5 to form an independent heating area. Each heating area can be independently controlled according to actual needs, further improving the flexibility and efficiency of heating.

[0047] During the heating process, the insulating filler layer 2 plays a role in insulation and heat conduction, preventing leakage between the heating wire 1 and the metal sleeve 3, thus ensuring safe use. The ceramic insulating sleeve 81 inside the sealing end seat 8 also provides reliable insulation protection for the heating wire 1. When the heating reaches the set temperature or the heating task is completed, the power is cut off and the heating tube stops working.

[0048] In summary, the sleeve-type heating tube of this utility model, through its unique structural design, increases the contact area with the heating medium and improves the heating efficiency.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A jacketed heating tube comprising a heating wire (1), an insulating filler layer (2) and a metal jacket (3), which are arranged from inside to outside, characterized in that: The metal sleeve (3) has several heat exchange grooves (4) along its length. The opening of the heat exchange grooves (4) divides the interior of the metal sleeve (3) into several heating spaces (5). Each heating space (5) is equipped with a heating wire (1). A circular heat exchange groove (6) is opened at one end of the metal sleeve (3) along its length. A ceramic partition plate (7) is provided between the inner end of the heat exchange groove (4) and the inner wall of the metal sleeve (3).

2. A tube-in-tube heat pipe according to claim 1, wherein: The heat exchange tank (4) has a V-shaped cross-section.

3. A tube-in-tube heat exchanger according to claim 1, wherein: The heating wire (1) is spiral-shaped.

4. A tube-in-tube heat exchanger according to claim 1, wherein: The circular heat exchange groove (6) extends to the sealing end seat (8) at the other end of the metal sleeve (3), and a number of ceramic insulating sleeves (81) are installed in the sealing end seat (8).

5. A tube-in-tube heat exchanger according to claim 4, wherein: Each heating wire (1) corresponds to a ceramic insulating sleeve (81) and is installed thereon, and the outer side of the sealing end seat (8) is connected to the heating wire wire (82) connected to the heating wire (1).

6. A tube-in-tube heat exchanger according to claim 1, wherein: The insulating filling layer (2) is filled in the heating space (5) between the heating wire (1) and the inner wall of the metal sleeve (3).

7. A tube-in-tube heat exchanger according to claim 4, wherein: The circular heat exchange groove (6) is opened near the sealing end seat (8).

8. A tube-in-tube heat exchanger according to claim 1, wherein: The adjacent heating spaces (5) are separated by the ceramic separator (7) to form a separate heating space (5).

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