CN214579594U - Air pipe connecting structure and deposition furnace - Google Patents

Abstract

The utility model belongs to the technical field of the sedimentation furnace, on the one hand, a tuber pipe connection structure is disclosed, the first sleeve pipe outside the tuber pipe is located including the cover to this tuber pipe connection structure, second sleeve pipe and pipe cap, first sleeve pipe sets firmly on the inner bag, and extend to the insulating layer from the inner bag, be equipped with first clearance between first sleeve pipe and the tuber pipe, so that the tuber pipe can slide and can block during the cotton entering inner bag that keeps warm along first sheathed tube extending direction, the second sleeve pipe sets firmly on the shell, and extend to the external world by the shell, the tuber pipe is by the pipe cap rigid coupling in the second sleeve pipe, be equipped with the second clearance that communicates to the insulating layer between second sleeve pipe and the tuber pipe, the cotton packing of keeping warm is in the second clearance, and can seal first clearance. The utility model discloses another aspect discloses a deposition furnace, this deposition furnace include as above tuber pipe connection structure. The problem that the joint of the air pipe, the inner container and the shell is prone to cracking due to the fact that the air pipe has large thrust is solved while the sealing performance between the air pipe, the inner container and the shell is met.

Description

Air pipe connecting structure and deposition furnace

Technical Field

The utility model relates to a deposition furnace technical field especially relates to an tuber pipe connection structure and deposition furnace.

Background

The deposition furnace generally includes the inner bag, the insulating layer, the shell and for the hot-blast tuber pipe of inner bag transport, at present, the tuber pipe is all that one end welds on the inner bag, the middle part welding of tuber pipe is on the shell, because the inner bag heating produces high temperature, and the insulating layer packing of stove outer covering has the heat preservation cotton, make the shell with atmospheric contact be close to the normal atmospheric temperature, make to form great temperature gradient at its linkage segment between tuber pipe and the shell, thereby produce great internal stress, and, the inner bag and tuber pipe of high temperature receive the thermal energy, make the inner bag fill the insulating layer inflation that has the heat preservation cotton towards, thereby the tuber pipe can receive great thrust at the junction with inner bag and shell, lead to the stress concentration of tuber pipe and the junction of inner bag and shell, and then the easy fracture of junction of tuber pipe and inner bag and shell.

If trompil on the inner bag to in can letting the tuber pipe directly penetrate the inner bag, though can reduce the influence of inner bag to the tuber pipe, nevertheless can lead to hot-blast heat preservation cotton of easily blowing away, pollute hot air circulation system, cause fan system trouble and influence electric heating's efficiency.

Therefore, there is a need to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an tuber pipe connection structure and sedimentation stove when satisfying the leakproofness between tuber pipe and inner bag and the shell, solve the tuber pipe because of having great thrust causes the junction of tuber pipe and inner bag and shell to easily split to and prevent that the heat preservation cotton of filling in the insulating layer from being brought into the problem to the inner bag in by the air current.

To achieve the above object, an aspect of the present invention provides an air duct connecting structure for connecting an air duct and a deposition furnace, wherein the deposition furnace comprises an inner container, an outer shell, and a heat insulating layer disposed between the inner container and the outer shell, the heat insulating layer is filled with heat insulating cotton, and the air duct sequentially passes through the heat insulating layer and the outer shell from the inner container, extends out to the outside, and is connected with an external pipeline. The tuber pipe connection structure is located first sleeve pipe, second sleeve pipe and the pipe cap outside the tuber pipe including the cover, wherein:

the first sleeve is fixedly arranged on the inner container and extends into the heat insulation layer from the inner container, and a first gap is formed between the first sleeve and the air pipe, so that the air pipe can slide along the extending direction of the first sleeve and can prevent heat insulation cotton from entering the inner container;

the second sleeve is fixedly arranged on the shell and extends to the outside from the shell, the air pipe is fixedly connected to the second sleeve through a pipe cap, a second gap communicated to the heat insulation layer is formed between the second sleeve and the air pipe, and the heat insulation cotton is filled in the second gap and can seal the first gap.

Preferably, the cap is capable of closing the second gap, and a sealing portion for sealing the second gap is provided between the cap, the second sleeve and the air duct.

Preferably, the second sleeve is provided with a limiting part, and the limiting part is configured to limit the heat preservation cotton in the middle section of the second gap, so that a cavity is formed between the heat preservation cotton in the second gap and the pipe cap.

Preferably, the limiting part is an annular plate, and the plate is welded on the inner wall of the middle section of the second sleeve.

Preferably, the pipe cap is provided with a leakage detecting hole.

Preferably, the cap is welded to the second sleeve and the air hose, respectively, to form a first weld and a second weld, each having an annular shape, and the sealing portion includes the first weld and the second weld.

The utility model discloses another aspect provides a deposition furnace, deposition furnace includes as above tuber pipe connection structure.

The utility model has the advantages that:

the utility model provides an air pipe connection structure and sedimentation furnace, through setting up first sleeve pipe and first clearance, make the tuber pipe can not receive the influence of inner bag when the inner bag receives thermal expansion deformation, reduced the tuber pipe and received great thrust, prevent the junction fracture of tuber pipe and inner bag and shell to can prevent that the heat preservation cotton from being brought into in the inner bag by the air current, thereby avoid causing fan system trouble and influence the electrical heating efficiency of inner bag; through setting up second sleeve pipe and second clearance to fill the cotton in the second clearance that will keep warm, with sealed first clearance, and reduced the temperature gradient of tuber pipe and shell junction, thereby satisfied the leakproofness between tuber pipe and inner bag and the shell and reduced the stress concentration of tuber pipe and inner bag and shell junction.

Drawings

Fig. 1 is a schematic structural view of an air duct connection structure provided in an embodiment of the present invention;

fig. 2 is a partial enlarged view of fig. 1 at R.

In the figure:

1. an inner container; 2. a housing; 21. a thermal insulation layer; 22. heat preservation cotton; 3. an air duct; 31. a first gap; 32. a second gap; 4. a first sleeve; 5. a second sleeve; 6. a pipe cap; 61. detecting a leak hole; 7. a limiting part.

Detailed Description

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

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The deposition furnace mainly has the function of enabling gas materials in the reaction tube to continuously form deposition products on the surface of the catalyst, in the process, the gas materials in the reaction tube are usually subjected to dividing wall type heating through hot air outside the reaction tube, and the hot air is conveyed to the inner container 1 at 650 ℃ and 700 ℃ through the air pipe 3, so that the deposition reaction speed of the gas materials is accelerated.

The deposition furnace generally comprises an inner container 1 and an outer shell 2, a heat insulation layer 21 is arranged between the inner container 1 and the outer shell 2, and heat insulation cotton 22 is filled in the heat insulation layer 21 so as to realize heat insulation and heat preservation of the inner container 1. The one end welding of tuber pipe 3 is on inner bag 1 to can fix tuber pipe 3 and sealed tuber pipe 3 and the interface of inner bag 1, tuber pipe 3 can pass insulating layer 21 and shell 2 in proper order and stretch out to the external world by inner bag 1, and tuber pipe 3 welds on shell 2, with the interface of fixed tuber pipe 3 and sealed tuber pipe 3 and shell 2, thereby can heat in carrying outside hot-blast to inner bag 1.

Because the heat insulation layer 21 is filled with the heat insulation cotton 22, the temperature of the shell 2 contacting with the atmosphere is close to the normal temperature, and the air pipe 3 is communicated to the inner container 1 from the shell 2, so that a larger temperature gradient is formed at the connecting section between the air pipe 3 and the shell 2, and a larger internal stress is generated. And, the inner bag 1 of high temperature is heated and can be filled with the insulating layer 21 inflation that keeps warm cotton 22 towards the packing to make tuber pipe 3 produce for shell 2 and warp, because tuber pipe 3 welds respectively on inner bag 1 and shell 2, make the welding seam of tuber pipe 3 and inner bag 1 and shell 2 junction receive great thrust, and then lead to the welding seam fracture of tuber pipe 3 and inner bag 1 and shell 2 junction.

In order to solve the above problem, as shown in fig. 1, this embodiment provides a deposition furnace, a wind pipe connection structure is disposed between the deposition furnace and a wind pipe 3, the wind pipe connection structure includes a first sleeve 4, a second sleeve 5 and a pipe cap 6, the first sleeve 4 is fixedly disposed on an inner container 1 and sleeved outside the wind pipe 3, and the first sleeve 4 extends from the inner container 1 to a thermal insulation layer 21, so that a first gap 31 is formed between the first sleeve 4 and the wind pipe 3, the first gap 31 enables the wind pipe 3 to slide along an extending direction of the first sleeve 4, and can prevent thermal insulation cotton 22 in the thermal insulation layer 21 from entering the inner container 1 from the first gap 31, when the inner container 1 is heated, the inner container 1 expands towards the thermal insulation layer 21 filled with the thermal insulation cotton 22, and the wind pipe 3 can slide in the first gap 31 relative to the first sleeve 4, so as to prevent the wind pipe 3 from directly receiving an acting force of the inner container 1, the thrust to which the air duct 3 is subjected is reduced.

The second sleeve 5 is welded on the housing 2 and sleeved outside the air pipe 3, and the second sleeve 5 extends outwards from the housing 2 to form a second gap 32 between the second sleeve 5 and the air pipe 3, the pipe cap 6 is sleeved on the air pipe 3 and fixedly connected on the housing 2, and the air pipe 3 is fixedly connected to the second sleeve 5 by the pipe cap 6 to fix the air pipe 3. The second gap 32 can be communicated to the heat insulation layer 21, so that the heat insulation cotton 22 can be filled in the second gap 32, and the first gap 31 can be sealed, thereby meeting the sealing performance between the air duct 3 and the liner 1 and the shell 2, reducing the temperature gradient at the joint of the air duct 3 and the pipe cap 6, and further reducing the internal stress at the joint of the air duct 3 and the pipe cap 6.

When the inner container 1 expanded by heat extrudes the heat insulation cotton 22 in the heat insulation layer 21, the heat insulation cotton 22 can transmit the pressure of the inner container 1 to the shell 2, so that the second sleeve 5 generates a moment which is pressed by the wall of the second sleeve 5 towards the centre line, whereby the connection of the air duct 3 to the housing 2, namely, the joint of the pipe cap 6 and the second sleeve 5 and the air pipe 3 respectively generates bending stress, and as the second gap 32 is also filled with the heat preservation cotton 22, so that a part of the moment experienced by the second sleeve 5 can be transmitted to the air duct 3, so as to reduce the bending stresses generated at the connection of the air duct 3 with the housing 2, thereby reducing the stress concentration at the joint of the air pipe 3 and the shell 2, preventing the joint of the air pipe 3 and the shell 2 from cracking, and the extruded insulation cotton 22 in the second gap 32 improves the sealing performance of the first gap 31, thereby ensuring the sealing performance between the air duct 3 and the inner container 1 and the outer shell 2.

It can be understood that the tuber pipe connection structure that this embodiment provided is arranged in solving and carries hot-blast to the high temperature inner bag of depositing stove for tuber pipe 3 is because of big, the inner bag 1 inflation of the temperature gradient with shell 2 junction causes the junction stress concentration of tuber pipe 3 and depositing stove and leads to the easy cracked problem of junction, and tuber pipe connection structure of being connected with other furnace bodies that has the same condition is also in the protection scope of the utility model, for example, this furnace body is used for heating and is carried the cold medium of treating the heating in inner bag 1 by tuber pipe 3, or tuber pipe 3 is because of its temperature variation to high temperature, and other furnace bodies of stress concentration phenomenon appear in tuber pipe 3 and the junction of this furnace body.

Further, in order to improve the sealing performance between the air duct 3 and the inner container 1 and the outer shell 2, the duct cap 6 can close the second gap 32, and a sealing portion for sealing the second gap 32 is arranged between the duct cap 6, the second sleeve 5 and the air duct 3, so that a second-stage sealing is formed for the first gap 31, and the sealing performance between the air duct 3 and the inner container 1 and the outer shell 2 is improved.

Specifically, in the present embodiment, the outer periphery of the cap 6 is welded to the housing 2 to form a first weld in the shape of a ring, the inner periphery of the cap 6 is welded to the outer wall of the duct 3 to form a second weld in the shape of a ring, and the first weld, the second weld and the cap 6 together form a sealing portion that seals the second gap 32.

With the above structure, preferably, in order to reduce the temperature gradient of the air duct 3 along the extending direction thereof, the second sleeve 5 is provided with the limiting portion 7, and the limiting portion 7 is configured to limit the thermal insulation cotton 22 to be located in the middle section of the second gap 32, so that a thermal insulation cavity can be formed between the thermal insulation cotton 22 located in the second gap 32 and the duct cap 6, thereby increasing the buffer length between the housing 2 from high temperature to low temperature of the air duct 3, and significantly reducing the temperature gradient, thereby reducing the internal stress at the connection position of the air duct 3 and the housing 2.

Specifically, in the present embodiment, the limiting portion 7 is an annular plate, and the annular plate is welded to the inner wall of the middle section of the second sleeve 5 to limit the insulating cotton 22 to be located in the middle section of the second gap 32. It will be appreciated that in other embodiments, the position-limiting portion 7 may be a positioning member welded to the circumferential array of the inner wall of the middle portion of the second sleeve 5, or may be another structure capable of performing the same function, and is not limited herein.

Preferably, in order to detect the tightness between the air duct 3 and the inner container 1 and the outer casing 2, as shown in fig. 2, a leakage detecting hole 61 is formed in the cap 6, and the air duct connecting structure can detect the tightness between the air duct 3 and the inner container 1 and the outer casing 2 by pressing the air duct into the leakage detecting hole 61.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (7)

1. The utility model provides a tuber pipe connection structure for connecting tuber pipe (3) and deposition furnace, the deposition furnace includes inner bag (1), shell (2), set up in inner bag (1) with insulating layer (21) between shell (2), it has heat preservation cotton (22) to fill in insulating layer (21), tuber pipe (3) are followed inner bag (1) passes in proper order insulating layer (21) with shell (2) and stretch out to the external world, a serial communication port, tuber pipe connection structure is located including the cover first sleeve pipe (4), second sleeve pipe (5) and pipe cap (6) outside tuber pipe (3), wherein:

the first sleeve (4) is fixedly arranged on the inner container (1) and extends into the heat insulation layer (21) from the inner container (1), and a first gap (31) is formed between the first sleeve (4) and the air pipe (3) so that the air pipe (3) can slide along the extending direction of the first sleeve (4) and can prevent the heat insulation cotton (22) from entering the inner container (1);

the second sleeve (5) is fixedly arranged on the shell (2) and extends outwards from the shell (2), the air pipe (3) is fixedly connected to the second sleeve (5) through the pipe cap (6), a second gap (32) communicated to the heat insulation layer (21) is arranged between the second sleeve (5) and the air pipe (3), and the heat insulation cotton (22) is filled in the second gap (32) and can seal the first gap (31).

2. A flue connection according to claim 1, wherein the cap (6) is adapted to close the second gap (32), and wherein a sealing portion is provided between the cap (6), the second sleeve (5) and the flue (3) for sealing the second gap (32).

3. The air pipe connection structure according to claim 2, wherein a limiting part (7) is arranged on the second sleeve (5), and the limiting part (7) is configured to limit the thermal insulation cotton (22) at the middle section of the second gap (32), so that a cavity is formed between the thermal insulation cotton (22) in the second gap (32) and the pipe cap (6).

4. A flue pipe connection according to claim 3, wherein the position-limiting portion (7) is an annular plate member welded to the inner wall of the middle section of the second sleeve (5).

5. A wind pipe connection according to claim 3, wherein said cap (6) is provided with a leak detection hole (61).

6. An air duct connection according to claim 2, wherein the cap (6) is welded to the second sleeve (5) and the air duct (3) respectively to form a first and a second weld, each in the shape of a ring, the seal comprising the first and second weld.

7. A deposition furnace comprising the duct connecting structure according to any one of claims 1 to 6.

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