Ceramic tube and ceramic chip fixing structure of high-temperature heater

Abstract

The utility model discloses a ceramic tube and ceramic chip fixing structure of a high-temperature heater. The ceramic tube and ceramic chip fixing structure comprises an arc ceramic chip, a first end constraint piece and a ceramic tube used for sleeving a heating wire. According to the utility model, at least two arc ceramic sheets in one group are connected end to end through the metal nails or the ceramic nails to form the ceramic ring, and two adjacent arc ceramic sheets are combined to form the waist-shaped expansion joint, so that the purpose of releasing the internal stress of the ceramic ring caused by thermal expansion and cold contraction can be achieved, and the ceramic ring can be ensured to stably work at high temperature for a long time; metal or ceramic nails are connected to the penetrating holes in a penetrating mode to bind the ends of all the ceramic tubes arranged in all the positioning holes, the effect of restraining transverse movement of the ceramic tubes is achieved, and the structural mode that heating wires are fixed through aluminum silicate ceramic fiber heat insulation materials is replaced. The technical defect that the furnace body loses efficacy due to the fact that the heating wires in the heating units are loosened and fall off is overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to high temperature heater technical field, and specifically is a kind of ceramic tube ceramic piece fixing structure of high temperature heater. BACKGROUND

[0002] Conventional high temperature heater, using alumina-silicate ceramic fiber heat insulation material fixed heating wire, the microscopic structure of alumina-silicate ceramic fiber heat insulation material is by a large number of "air hole warehouse" and "irregular direction ceramic fiber" interlaced, after long time high temperature, air hole warehouse can be reduced due to the growth of ceramic fiber, even collapse, with the further growth of ceramic fiber body lengthening, thickening, and the strength and toughness of ceramic fiber decrease with the size of itself, when external force is enough, ceramic fiber breaks, pulverizes, in turn lead to the failure of alumina-silicate ceramic fiber of heating body outer layer.

[0003] At present, the distribution installation structure mode of conventional high temperature heater to heating wire is mostly installed in the slot structure distributed in tubular shaped silicon-aluminum ceramic block, there is the problem that slot structure blocks the heat radiation diffusion of heating wire, so we propose to use ceramic tube, ceramic piece and other ceramic structures for the distribution installation of heating wire, but the following defects exist when ceramic tube, ceramic piece and other ceramic structures are assembled and used in high temperature environment: 1, large size ceramic ring breaks down due to thermal expansion and contraction; 2, ceramic tube structure sleeved with heating wire, under high temperature, has the same thermal expansion and contraction phenomenon, is prone to unbound transverse movement, ceramic tube will be separated from the constraint of other two directions of ceramic ring, leading to the loose falling of heating wire in heating unit, thus leading to the failure of furnace body. Therefore, a kind of ceramic tube ceramic piece fixing structure of high temperature heater is proposed for the above problems. SUMMARY

[0004] The purpose of the utility model is to provide a kind of ceramic tube ceramic piece fixing structure of high temperature heater to solve the above problems.

[0005] The utility model discloses a kind of ceramic tube ceramic piece fixing structure of high temperature heater, including arc ceramic piece, end part restraint piece one and for the ceramic tube of sleeved heating wire, a group of arc ceramic piece is connected by end part restraint piece one first and last joint assembly and form a complete ceramic ring, and every arc ceramic piece surface is distributed and set with multiple positioning holes, the corresponding end of ceramic tube is inserted into every positioning hole, and end part restraint piece two is connected in the perforation at the corresponding end of the ceramic tube, the two end part connecting holes of the end of adjacent two arc ceramic pieces are inserted together with the same end part restraint piece one.

[0006] Preferably, the end part restraint piece one is one of metal nail and ceramic nail.

[0007] Preferably, the second end restraint is a metal wire.

[0008] Preferably, the arc-shaped ceramic pieces are in sets of at least two.

[0009] Compared with the prior art, the advantages of this utility model are as follows: by connecting at least two sets of arc-shaped ceramic sheets end to end with metal or ceramic nails to form a ceramic ring, and combining the waist-shaped expansion joint formed by two adjacent arc-shaped ceramic sheets, the stress inside the ceramic ring caused by thermal expansion and contraction can be released, and the ceramic ring can be guaranteed to work stably at high temperatures for a long time. By using metal or ceramic nails to bind the end of each ceramic tube placed in each positioning hole at the perforation, the lateral movement of the ceramic tube is constrained. This replaces the structure of fixing the heating wire with aluminosilicate ceramic fiber insulation material, and solves the technical defect problem of furnace failure caused by the loosening and falling off of the heating wire in the heating unit. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Fig. 2 This is a schematic diagram of the arc-shaped ceramic sheet structure of this utility model;

[0013] Fig. 3 This is an enlarged view of the structure at point A in diagram 1.

[0014] In the diagram: 1. Arc-shaped ceramic sheet; 110. Positioning hole; 120. End connection hole; 2. Heating wire; 3. End restraint part one; 4. Ceramic tube; 410. Perforation; 411. End restraint part two. Detailed Implementation

[0015] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] The technical scheme of the utility model is further illustrated below in combination with the drawings and through specific embodiments.

[0017] In the description of the utility model, it needs to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0018] Please refer to Figs. 1-3 As shown in the figure, a kind of ceramic tube ceramic sheet fixing structure of high temperature heater, including circular arc ceramic sheet 1, end restraint piece one 3 and the ceramic tube 4 for the structure of heating wire 2, a group of the circular arc ceramic sheet 1 is connected and assembled to form a complete ceramic ring by end restraint piece one 3 head-to-tail, and each circular arc ceramic sheet 1 surface is distributed with a plurality of positioning holes 110, the corresponding end of ceramic tube 4 is inserted into each positioning hole 110, and end restraint piece two 411 is connected in series in the perforation 410 at the corresponding end of the ceramic tube 4, and the two end connection holes 120 at the end of the adjacent two circular arc ceramic sheet 1 overlap are inserted together with the same end restraint piece one 3.

[0019] Further, the end restraint piece one 3 is one of metal nail and ceramic nail.

[0020] Further, the end restraint piece two 411 is a metal wire.

[0021] Further, the circular arc ceramic sheet 1 is at least two groups.

[0022] Working principle: by connecting the circular arc ceramic sheet 1 of at least two groups head-to-tail to form a ceramic ring through end restraint piece one 3 (metal nail or ceramic nail), and combining the waist-shaped expansion joint formed by the adjacent two circular arc ceramic sheet 1, both the purpose of releasing the internal stress of the ceramic ring caused by thermal expansion and cold contraction and the stable work of the ceramic ring under high temperature for a long time can be achieved; by restraining the end of each ceramic tube 4 in each positioning hole 110 through end restraint piece two 411 (metal wire) threaded at the perforation 410, the transverse movement of the ceramic tube 4 is constrained, the structure of fixing the heating wire 2 by using aluminum silicate ceramic fiber heat insulation material is replaced, and the technical defect problem that the furnace body is invalid due to the loose and falling of the heating wire in the heating unit is solved.

[0023] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments but can be implemented in other embodiments without departing from the scope of the present application. The embodiments are therefore to be seen as exemplary and not restrictive, the scope of the present application being defined by the appended claims and not by the above description. Any reference signs in the claims should not be construed as limiting the scope of the claims to the features to which the reference signs are attached.

[0024] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A ceramic tube ceramic sheet fixing structure of a high temperature heater, characterized by: The application relates to a ceramic heating ring, which comprises circular-arc ceramic sheets (1), end binding members I (3) and ceramic tubes (4) for sleeving heating wires (2), a group of the circular-arc ceramic sheets (1) are connected and assembled in a head-tail mode through the end binding members I (3) to form a complete ceramic ring, a plurality of positioning holes (110) are distributed on the surface of each circular-arc ceramic sheet (1), the corresponding ends of the ceramic tubes (4) are inserted into each positioning hole (110), end binding members II (411) are serially connected in the through holes (410) at the corresponding ends of the ceramic tubes (4), and two end connecting holes (120) at the end portions of two adjacent circular-arc ceramic sheets (1) are inserted into the same end binding member I (3).

2. The ceramic tube ceramic sheet fixing structure of a high temperature heater according to claim 1, characterized in that: The end binding member I (3) is one of a metal nail and a ceramic nail.

3. The ceramic tube ceramic sheet fixing structure of a high temperature heater according to claim 1, characterized in that: The end binding member II (411) is a metal wire.

4. The ceramic tube ceramic sheet fixing structure of a high temperature heater according to claim 1, characterized in that: The circular-arc ceramic sheets (1) are at least two in a group.

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