CN213880312U

CN213880312U - Double-thread type silicon carbide rod electric heating element

Info

Publication number: CN213880312U
Application number: CN202120001409.0U
Authority: CN
Inventors: 陈志辉; 陈章有; 陈克明
Original assignee: Zhengzhou City Songshan Heating Elements Co ltd
Current assignee: Zhengzhou City Songshan Heating Elements Co ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2021-08-03
Anticipated expiration: 2031-01-04

Abstract

The utility model provides a double thread type elema electric heating element, including the linkage segment, on the terminal surface of linkage segment one end to keeping away from the direction spiral extension of linkage segment be provided with two heating elements of silicon carbon material, two the heating element sets up at an interval each other, two the heating element keeps away from the one end of linkage segment all is connected with the electric connection section, is provided with insulating separator between two electric connection sections, be provided with the metal level on the tip surface of electric connection section, and two the surface of heating element is on same space cylinder face, all is provided with the strengthening rib of evagination on the surface of every heating element, the strengthening rib extends to the other end from one end along the extending direction of heating element; the structural strength of the spiral heating element can be reinforced by arranging the reinforcing ribs, so that the overall strength of the double-thread type silicon-carbon rod heating element is enhanced, and the phenomenon that the double-thread type silicon-carbon rod electric heating element is broken can be remarkably reduced.

Description

Double-thread type silicon carbide rod electric heating element

Technical Field

The utility model relates to a elema technical field, concretely relates to double thread type elema electric heating element.

Background

The silicon-carbon rod is a rod-shaped or tubular non-metal high-temperature electric heating element which is made by using high-purity silicon carbide as a main raw material, processing and preparing a blank according to a certain material ratio, and carrying out high-temperature silicification recrystallization sintering at 2200 ℃ and has the characteristics of high service temperature, high resistance to high temperature, oxidation, corrosion, fast temperature rise, long service life, small high-temperature deformation and the like, and has good chemical stability.

The temperature controller is matched with an automatic electric control system, can obtain accurate constant temperature, and can automatically adjust the temperature according to the requirements of the production process. The silicon carbide rod is used for heating, so that the heating is convenient, safe and reliable. The silicon carbide rod heating element is widely applied to the high-temperature fields of electronics, magnetic materials, powder metallurgy, ceramics, glass, semiconductors, analytical tests, scientific research and the like, becomes an electric heating element of a tunnel kiln, a roller kiln, a glass kiln, a vacuum furnace, a muffle furnace, a smelting furnace and various heating devices, is commonly used in the prior art, and has double-thread type, single-thread type and the like silicon carbide rod heating elements, but the spiral heating area of the prior silicon carbide rod heating element is fragile when the prior silicon carbide rod heating element is used, and particularly is the double-thread type silicon carbide rod electric heating element.

SUMMERY OF THE UTILITY MODEL

In view of foretell problem, the application provides a double thread type elema electric heating element, the surface that generates heat the piece that sets up through the spiral extension at the elema sets up convex strengthening rib, can add the structural strength that the spiral shape generated heat the piece, thereby can double thread type elema heating element's bulk strength strengthen, the breakable phenomenon of reduction double thread type elema electric heating element that can show improves double thread type elema heating element's wholeness ability.

The utility model provides a double thread type elema electric heating element, including the linkage segment to keeping away from on the terminal surface of linkage segment one end the direction spiral of linkage segment is extended and is provided with the piece that generates heat of two silicon carbon materials, two the piece that generates heat sets up at interval each other, two the piece that generates heat is kept away from the one end of linkage segment all is connected with the electricity linkage segment, is provided with insulating separator between two electricity linkage segments, be provided with the metal level on the tip surface of electricity linkage segment, and two the surface of the piece that generates heat is on same space face of cylinder, every all be provided with the strengthening rib of evagination on the surface of the piece that generates heat, the strengthening rib is followed the extending direction of the piece that generates heat extends to the other end from one end.

Furthermore, each heating piece is provided with two reinforcing ribs, and the two reinforcing ribs are arranged close to the edge positions of two sides of each heating piece.

Furthermore, each heating piece is provided with one reinforcing rib, and the reinforcing ribs are arranged in the middle of the heating piece.

Further, the cross section of the reinforcing rib is arc-shaped;

or the cross section of the reinforcing rib is trapezoidal.

Furthermore, the reinforcing rib and the heating part are arranged integrally, and the material of the reinforcing rib is the same as that of the heating part.

Furthermore, the material of the metal layer comprises aluminum and copper.

Furthermore, the inner surfaces of the two electric connection sections are positioned on the same space circumferential surface, the isolating piece is a cylindrical piece with the same diameter as the space circumferential surface, an isolating plate capable of extending into a gap between the two electric connections is arranged on the outer surface of the isolating piece, and the length of the metal layer along the direction from the electric connection section to the connection section is smaller than the length of the isolating piece in the axial direction.

The utility model provides a local quench device of medical oncology has following beneficial effect.

1. The surface of the heating element which is arranged by extending the spiral on the silicon carbide rod is provided with the convex reinforcing ribs, so that the structural strength of the spiral heating element can be reinforced, the overall strength of the double-thread silicon carbide rod heating element can be enhanced, the phenomenon that the double-thread silicon carbide rod electric heating element is broken can be obviously reduced, and the overall performance of the double-thread silicon carbide rod heating element is improved.

2. The surface area of the heating part can be increased by arranging the reinforcing ribs, so that the heat conduction rate is improved.

3. Through setting up the division board with the surface of separator to the messenger makes the aluminium strip joint can play abundant supporting role to the electric connection section through the clamp at the electric connection section, avoids the electric connection section cracked.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a double-thread silicon carbide rod electric heating element according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional structure view of a first implementation manner of a double-thread silicon carbide rod electric heating element according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional structure view of a first embodiment of a double-thread silicon carbide rod electric heating element provided by the present invention.

Fig. 4 is a schematic structural view of the spacer of the present invention.

Description of the drawings: the heat-generating component comprises a connecting section 10, a heat-generating component 11, an electric connecting section 110, a separating component 2, a metal layer 111, a reinforcing rib 12, a first gap 1100 and a second gap 1101.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

First embodiment referring to fig. 1, 2 and 4, the present invention provides a dual-thread type silicon carbide rod electric heating element, as a specific embodiment, which comprises a connecting section 10, two heating pieces 11 made of silicon carbon material are spirally extended and arranged on the end surface of one end of the connecting section 10 in the direction far away from the connecting section 10, the two heating pieces 11 are arranged at intervals, one end of each heating piece 11 far away from the connecting section 10 is connected with an electric connecting section 110, an insulating isolating piece 2 is arranged between the two electric connecting sections, the outer surface of the end of the electrical connection section 110 is provided with a metal layer 111, and the outer surfaces of the two heating elements 11 are on the same spatial cylindrical surface, a convex reinforcing rib 12 is arranged on the outer surface of each heating element 11, and the reinforcing rib 12 extends from one end to the other end along the extending direction of the heating element 11. Specifically, the connecting section 10 is made of conductive material, but the resistance is much smaller than that of the heating element 11, the heating value is very small when the electric heating element is powered on, the connecting section is used for connecting two heating elements 11, the two heating elements 11 are arranged spirally, a carbon silicon tube can be used in the actual manufacturing process, two first gaps 1100 are arranged on the side wall of the carbon silicon tube to manufacture a double-thread type silicon carbon rod electric heating element, the other ends of the two heating elements 11 are provided with electric connecting sections 110, two second gaps 1101 are arranged between the two electric connecting sections 110 and correspondingly communicated with one first gap, the second gaps are arranged linearly, the material of the electric connecting sections 110 is different from that of the heating elements 11, the resistance is also very small, the heating value is very small when the electric heating element is powered on and mainly plays the roles of fixing the electric heating element and conducting, the reinforcing ribs 12 are arranged on the outer surface of the heating elements 11 and can be arranged integrally with the electric heating elements 11, the silicon carbide rod is integrally formed with the silicon carbide rod when the silicon carbide rod is manufactured, and then the first gap is formed after cutting through a tool.

The surface that generates heat that extends the setting through the spiral at the elema sets up convex strengthening rib, can generate heat the structural strength of piece to the spiral shape and consolidate, thereby can the bulk strength of double thread type elema heating element strengthen, the breakable phenomenon of reduction double thread type elema electric heating element that can show, improve double thread type elema heating element's wholeness ability, in addition, the setting of strengthening rib can also increase the surface area that generates heat 11, thereby improve heat conduction rate when heating

Specifically, referring to fig. 2, as a specific embodiment, two reinforcing ribs 12 are disposed on each heating element 11, and the two reinforcing ribs 12 are disposed near two side edges of the heating element 11. It can be understood that, in the actual use process, the fracture of the heating element 11 is generally initiated from the positions of the two side walls in the cross section direction of the heating element 11, and the reinforcing ribs 12 are arranged at the positions of the two side edges, so that the heating element can be well reinforced, and the phenomenon of the double-thread silicon carbon rod electric heating element cracking can be effectively improved.

Further, referring to fig. 2, as a specific embodiment, the cross section of the reinforcing rib 12 is a circular arc shape; of course, the ribs 12 may be provided in other configurations, and as another general embodiment, referring to fig. 3, the cross section of the ribs 12 is trapezoidal.

Further, in the actual using process, the double-thread silicon carbide rod electric heating element is usually powered on by contacting the aluminum strip with the electric connection section 110, and then is clamped by the clamping piece, so that the aluminum strip is in close contact with the electric connection section 110, and the electric conduction effect is achieved, but because the power of the electric heating element is higher, the working current is also higher, in order to ensure the reliability of the electric connection between the aluminum strip and the electric connection section 110, the electric connection section 110 is at least provided with the common metal layer 111 at the position close to the end part, so that the electric conduction efficiency is improved, the metal layer 111 can be made of aluminum, copper and the like, and the metal layer 111 can be arranged in an electroplating way, a hot dipping way and the like.

Further, referring to fig. 4, the inner surfaces of the two electrical connection sections 110 are located on the same circumferential surface of a space, the spacer 2 is a cylindrical member having the same diameter as the circumferential surface of the space, and the outer surface of the spacer 2 is provided with a spacer 21 capable of penetrating into the gap between the two electrical connections.

Further, the length of the metal layer in the direction from the electrical connection section to the connection section is smaller than the length of the spacer in the axial direction. The arrangement can provide more sufficient support for the electric connection section.

Because will use anchor clamps centre gripping to connect aluminium strip and electricity linkage segment 110, can be through setting up insulating barrier member 2 between two electricity linkage segments 111, the barrier member can play the effect that prevents two electricity linkage segments 111 contacts on the one hand, can also play the effect that supports the electricity linkage segment, can make anchor clamps press from both sides aluminium strip and electricity linkage segment 110 tightly, surface through with the barrier member sets up the division board, thereby the messenger can play abundant supporting role to the electricity linkage segment in the electricity linkage segment messenger with the aluminium strip joint through the clamp, avoid the electricity linkage segment to fragment, the material of barrier member 2 can use porcelain.

The second embodiment, refer to fig. 3, the utility model provides a double thread type elema, the difference with the first embodiment lies in, every be provided with one on the piece 11 that generates heat the strengthening rib 12, the strengthening rib 12 sets up the intermediate position of the piece 11 that generates heat, set up the strengthening rib 12 and also can play the effect of strengthening in the intermediate position of the piece 11 that generates heat equally, it should be said that, when the strengthening rib 12 sets up in the middle zone, preferred isosceles trapezoid or arc of its cross section, the hypotenuse of isosceles trapezoid and the contained angle value scope on the piece 11 surface that generates heat are 30-60 isosceles trapezoid's height makes the piece 11 thickness that generates heat between the third and the half.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A double-thread silicon carbon rod electric heating element is characterized by comprising a connecting section (10), two heating pieces (11) made of silicon carbon materials are spirally and extendedly arranged on the end face of one end of the connecting section (10) towards the direction far away from the connecting section (10), the two heating pieces (11) are arranged at intervals, one ends of the two heating pieces (11) far away from the connecting section (10) are both connected with an electric connecting section (110), an insulating isolating piece (2) is arranged between the two electric connecting sections, the outer surface of the end part of the electric connection section (110) is provided with a metal layer (111), the outer surfaces of the two heating pieces (11) are arranged on the same spatial cylindrical surface, the outer surface of each heating element (11) is provided with a convex reinforcing rib (12), the reinforcing ribs (12) extend from one end to the other end along the extending direction of the heating member (11).

2. A dual-thread type silicon carbide rod electric heating element according to claim 1, wherein two reinforcing ribs (12) are provided on each heating member (11), and the two reinforcing ribs (12) are provided near two side edges of the heating member (11).

3. A dual screw type silicon carbide rod electric heating element according to claim 1, wherein each of said heat generating members (11) is provided with one of said reinforcing ribs (12), and said reinforcing rib (12) is provided at a middle position of said heat generating member (11).

4. A dual thread silicon carbide rod electric heating element according to claim 2 or 3, wherein the cross section of the reinforcing rib (12) is circular arc shape;

or the cross section of the reinforcing rib (12) is trapezoidal.

5. A dual-thread type silicon carbide rod electric heating element according to claim 2 or 3, wherein the reinforcing ribs (12) and the heating member (11) are integrally arranged, and the material of the reinforcing ribs (12) is the same as that of the heating member (11).

6. A dual thread silicon carbide rod electric heating element according to claim 1, wherein the material of the metal layer (111) comprises aluminum or copper.

7. A dual-thread type silicon carbon rod electric heating element according to claim 1, wherein the inner surfaces of the two electric connection sections (110) are located on the same space circumferential surface, the isolating member (2) is a cylindrical member with the same diameter as the space circumferential surface, an isolating plate (21) capable of extending into the gap between the two electric connections is arranged on the outer surface of the isolating member (2), and the length of the metal layer (111) along the direction from the electric connection section (110) to the connection section (10) is smaller than the axial length of the isolating member (2).