阅读说明：本技术 一种辐射管 (Radiant tube ) 是由 马中亮 陈兴 吴月华 于 2019-11-18 设计创作，主要内容包括：本发明公开了一种辐射管,上U形管与下U形管之间通过连接圆弧管相连,内衬板和外衬板之间设置若干层陶瓷纤维毯,内衬板、陶瓷纤维毯和外衬板之间通过螺栓固定连接,支架固定连接在外衬板上,且支架依次穿过陶瓷纤维毯和内衬板,在连接圆弧管上焊接有固定耳,所述固定耳与支架固定连接；上固定座焊接在上U形管的圆弧壁上,下固定座焊接在下U形管的圆弧壁上,上固定座与下固定座之间通过螺栓固定；在外衬板上焊接两个陶瓷套,所述辐射管体的两个端口伸于陶瓷套内。本发明中上固定座、下固定座和支架起到支撑作用,将上U形管和下U形管固定于一体,避免整个辐射管体悬空发生下垂,从而将直管薄弱补位拉裂的情况。(The invention discloses a radiant tube, wherein an upper U-shaped tube is connected with a lower U-shaped tube through a connecting arc tube, a plurality of layers of ceramic fiber blankets are arranged between an inner lining plate and an outer lining plate, the inner lining plate, the ceramic fiber blankets and the outer lining plate are fixedly connected through bolts, a bracket is fixedly connected on the outer lining plate, the bracket sequentially penetrates through the ceramic fiber blankets and the inner lining plate, fixing lugs are welded on the connecting arc tube, and the fixing lugs are fixedly connected with the bracket; the upper fixing seat is welded on the circular arc wall of the upper U-shaped pipe, the lower fixing seat is welded on the circular arc wall of the lower U-shaped pipe, and the upper fixing seat and the lower fixing seat are fixed through bolts; two ceramic sleeves are welded on the outer lining plate, and two ports of the radiation tube body extend into the ceramic sleeves. The upper fixing seat, the lower fixing seat and the bracket play a supporting role, the upper U-shaped pipe and the lower U-shaped pipe are fixed into a whole, and the phenomenon that the whole radiant tube body is suspended to droop so as to stretch and crack a weak repairing position of a straight tube is avoided.)

1. The utility model provides a radiant tube, includes radiant tube body (1), radiant tube body (1) includes U-shaped pipe (11), lower U-shaped pipe (12) and connects circular arc pipe (13), it links to each other its characterized in that through connecting circular arc pipe (13) between U-shaped pipe (11) and lower U-shaped pipe (12): the ceramic fiber blanket is characterized by further comprising an inner lining plate (2), an outer lining plate (3), a ceramic fiber blanket (4), a ceramic sleeve (5), an upper fixing seat (6), a lower fixing seat (7) and a support (8), wherein a plurality of layers of ceramic fiber blankets (4) are arranged between the inner lining plate (2) and the outer lining plate (3), the inner lining plate (2), the ceramic fiber blankets (4) and the outer lining plate (3) are fixedly connected through bolts, the support (8) is fixedly connected onto the outer lining plate (3), the support (8) sequentially penetrates through the ceramic fiber blankets (4) and the inner lining plate (2), a connecting arc pipe (13) is welded with a fixing lug (131), and the fixing lug (131) is fixedly connected with the support (8); the upper fixing seat (6) is welded on the arc wall of the upper U-shaped pipe (11), the lower fixing seat (7) is welded on the arc wall of the lower U-shaped pipe (12), and the upper fixing seat (6) and the lower fixing seat (7) are fixed through bolts; two ceramic sleeves (5) are welded on the outer lining plate (3), and two ports of the radiant tube body (1) extend into the ceramic sleeves (5).

2. A radiant tube as claimed in claim 1, wherein: the inner lining plate (2) comprises a first inner lining plate (21) and a second inner lining plate (22), the two first inner lining plates (21) are symmetrically arranged on two sides of the second inner lining plate (22), each first inner lining plate (21) is provided with a round hole, and the ceramic sleeve (5) is fixed in the round hole.

3. A radiant tube as claimed in claim 2, wherein: mounting grooves (221) are formed in the second inner lining plate (22) and the ceramic fiber blanket (4), and the support (8) penetrates through the mounting grooves (221).

4. A radiant tube as claimed in claim 1, wherein: the ceramic fiber blanket (4) is provided with at least four layers, and the ceramic sleeve (5) penetrates through the ceramic fiber blanket (4) on the first layer on the left side and is abutted against the end face of the ceramic fiber blanket (4) on the second layer on the left side.

5. A radiant tube as claimed in claim 4, characterized in that: two stop collar (31) of fixed connection on outer welt (3), be equipped with the step hole in the axle center direction of stop collar (31), the step face in step hole is contradicted on the terminal surface of ceramic sheathing (5) to contradict ceramic sheathing (5) on the ceramic fibre blanket (4) terminal surface of second layer.

6. A radiant tube as claimed in claim 1, wherein: a plurality of bolts are welded on the outer lining plate (3), and the bolts sequentially penetrate through the ceramic fiber blanket (4) and the outer lining plate (3).

The technical field is as follows:

the invention relates to a radiant tube.

Background art:

the radiant tube is a heating device for burning gas fuel, the gas fuel is burned in the sealed gas radiant tube, heat is transferred to a heated object by taking heat radiation as a main form through the surface of the heated tube, and the burning atmosphere and products are not contacted with the heated object, so that conditions are created for heat treatment under protective atmosphere, and the heating device is particularly suitable for occasions with high requirements on product quality.

The gas radiant tube has the characteristics of high combustion heat efficiency, stable operation, high equipment reliability and the like, and is widely applied to various heat treatment furnaces, continuous annealing furnaces and the like. The fuel gas radiant tube may be classified into a straight tube type, a sleeve type, a U type, a W type, a Y type, a P type, a double P type, and the like.

Because cooling and intensification cause expend with heat and contract with cold easily in W type radiant tube use, lead to the connecting piece in high temperature environment to take place to damage, lead to the unsettled emergence flagging of body to with the weak position strain fracture of mending of straight tube, cause the loss.

The invention content is as follows:

the present invention provides a radiant tube to solve the above problems of the prior art.

The technical scheme adopted by the invention is as follows: a radiant tube comprises a radiant tube body, wherein the radiant tube body comprises an upper U-shaped tube, a lower U-shaped tube and a connecting arc tube, the upper U-shaped tube is connected with the lower U-shaped tube through the connecting arc tube, the radiant tube further comprises an inner lining plate, an outer lining plate, a ceramic fiber blanket, a ceramic sleeve, an upper fixing seat, a lower fixing seat and a support, a plurality of layers of ceramic fiber blankets are arranged between the inner lining plate and the outer lining plate, the inner lining plate, the ceramic fiber blanket and the outer lining plate are fixedly connected through bolts, the support is fixedly connected to the outer lining plate, the support sequentially penetrates through the ceramic fiber blanket and the inner lining plate, fixing lugs are welded on the connecting arc tube and fixedly connected with the support; the upper fixing seat is welded on the circular arc wall of the upper U-shaped pipe, the lower fixing seat is welded on the circular arc wall of the lower U-shaped pipe, and the upper fixing seat and the lower fixing seat are fixed through bolts; two ceramic sleeves are welded on the outer lining plate, and two ports of the radiation tube body extend into the ceramic sleeves.

Furthermore, the inner lining plates comprise a first inner lining plate and a second inner lining plate, the two first inner lining plates are symmetrically arranged on two sides of the second inner lining plate, a round hole is formed in each first inner lining plate, and the ceramic sleeve is fixed in the round hole.

Further, mounting grooves are formed in the second lining plate and the ceramic fiber blanket, and the support penetrates through the mounting grooves.

Furthermore, the ceramic fiber blanket is provided with at least four layers, and the ceramic sleeve penetrates through the ceramic fiber blanket of the first layer on the left side and abuts against the end face of the ceramic fiber blanket of the second layer on the left side.

Furthermore, two limiting sleeves are fixedly connected to the outer lining plate, a step hole is formed in the axis direction of each limiting sleeve, the step surface of each step hole abuts against the end surface of the ceramic sleeve, and the ceramic sleeve abuts against the end surface of the ceramic fiber blanket on the second layer.

Further, a plurality of bolts are welded on the outer lining plate, and the bolts sequentially penetrate through the ceramic fiber blanket and the outer lining plate.

The invention has the following beneficial effects:

the upper fixing seat, the lower fixing seat and the bracket play a supporting role, the upper U-shaped pipe and the lower U-shaped pipe are fixed into a whole, and the phenomenon that the whole radiant tube body is suspended to droop so as to stretch and crack a weak repairing position of a straight tube is avoided.

Description of the drawings:

FIG. 1 is a front view of the present invention.

Fig. 2 is a left side view of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

FIG. 4 is a structural view of a second inner liner plate according to the present invention.

Fig. 5 is an enlarged view of the installation structure of the ceramic sheath according to the present invention.

The specific implementation mode is as follows:

the invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 5, the radiant tube of the present invention includes a radiant tube body 1, an inner lining plate 2, an outer lining plate 3, a ceramic fiber blanket 4, a ceramic sheath 5, an upper fixing seat 6, a lower fixing seat 7, and a bracket 8.

The radiant tube body 1 comprises an upper U-shaped tube 11, a lower U-shaped tube 12 and a connecting arc tube 13, the upper U-shaped tube 11 is connected with the lower U-shaped tube 12 through the connecting arc tube 13, a plurality of layers of ceramic fiber blankets 4 are arranged between an inner lining plate 2 and an outer lining plate 3, the inner lining plate 2, the ceramic fiber blankets 4 and the outer lining plate 3 are fixedly connected through bolts, a support 8 is fixedly connected to the outer lining plate 3, and the support 8 sequentially penetrates through the ceramic fiber blankets 4 and the inner lining plate 2. In order to fix the connecting circular arc tube 13 on the bracket 8, a fixing lug 131 is welded on the connecting circular arc tube 13, and the fixing lug 131 is fixedly connected with the bracket 8.

Go up fixing base 6 and weld on the circular arc wall of last U-shaped pipe 11, lower fixing base 7 welds on the circular arc wall of U-shaped pipe 12 down, goes up fixing base 6 and passes through the bolt fastening down between the fixing base 7. Two ceramic sleeves 5 are welded on the outer lining plate 3, and two ports of the radiant tube body 1 extend into the ceramic sleeves 5.

The inner lining plate 2 comprises a first inner lining plate 21 and a second inner lining plate 22, wherein the two first inner lining plates 21 are symmetrically arranged at two sides of the second inner lining plate 22, each first inner lining plate 21 is provided with a round hole, and the ceramic bushing 5 is fixed in the round hole.

In order to facilitate the fixed installation of the bracket 8, mounting grooves 221 are formed on the second inner lining plate 22 and the ceramic fiber blanket 4, and the bracket 8 is inserted into the mounting grooves 221.

The ceramic fiber blanket 4 of the invention is provided with at least four layers, and the ceramic sleeve 5 penetrates through the ceramic fiber blanket 4 of the first layer on the left side and is abutted against the end face of the ceramic fiber blanket 4 of the second layer on the left side.

In order to facilitate the installation and positioning of the ceramic sleeve 5, two limiting sleeves 31 are fixedly connected to the outer lining plate 3, a step hole is formed in the axis direction of each limiting sleeve 31, the step surface of each step hole abuts against the end surface of the ceramic sleeve 5, and the ceramic sleeve 5 abuts against the end surface of the ceramic fiber blanket 4 of the second layer.

A plurality of bolts are welded on the outer lining plate 3 and sequentially pass through the ceramic fiber blanket 4 and the outer lining plate 3.

The upper fixing seat, the lower fixing seat and the bracket play a supporting role, the upper U-shaped pipe and the lower U-shaped pipe are fixed into a whole, and the phenomenon that the whole radiant tube body is suspended to droop so as to stretch and crack a weak repairing position of a straight tube is avoided.

The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.