Outer guide cylinder and guide cylinder

Abstract

The utility model discloses an outer guide cylinder and a guide cylinder, the outer guide cylinder comprises a straight wall main body, a conical wall cylinder and a bolt, the conical wall cylinder comprises a straight cylinder section and a reducing cylinder section which are arranged in sequence; a circle of fixing ring is arranged on the inner diameter face of one end of the straight wall body, the inner diameter of the straight barrel section is larger than or equal to the inner diameter of the fixing ring and smaller than the outer diameter of the fixing ring, and bolt holes used for being connected with the bolts are formed in the corresponding positions of the fixing ring and the end of the straight barrel section. The fixing ring is arranged on the inner diameter face of the end of the straight wall body, the bolt hole is formed in the position, corresponding to the end of the straight barrel section, of the fixing ring, the bolt is directly arranged in the outer flow guide barrel, the bolt is installed in the axial direction instead of the radial direction of the outer flow guide barrel, and the bolt cannot make direct contact with silicon liquid outside the outer flow guide barrel; the influence on the use of the outer guide cylinder caused by bolt support cracking is avoided; and the straight-wall main body and the conical-wall cylinder are convenient to disassemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to outer flow guide cylinder technical field, in particular to a kind of outer flow guide cylinder and flow guide cylinder. BACKGROUND

[0002] The outer flow guide cylinder adopts splicing structure, and the splicing outer flow guide cylinder includes a straight-wall main body and a conical-wall cylinder. The splicing structure is arranged at the connecting part of the straight-wall main body and the conical-wall cylinder, so that the straight-wall main body and the conical-wall cylinder are connected along the radial direction of the outer flow guide cylinder by bolts. For example, the application number CN202323427024.9 "single crystal furnace, its flow guide cylinder and splicing outer flow guide cylinder".

[0003] However, the existing outer flow guide cylinder structure has the following problems:

[0004] Since the outer part of the outer flow guide cylinder is a silicon liquid, the bolts are used to connect the straight-wall main body and the conical-wall cylinder at the joint part in the radial direction. One end of the bolt is arranged outside the outer flow guide cylinder and directly contacts the silicon liquid in the working state. In a long-term high-temperature environment, the bolt is prone to cracking due to thermal expansion. This not only affects the normal use of the outer flow guide cylinder, but also makes it difficult to disassemble the straight-wall main body and the conical-wall cylinder. UTILITY MODEL CONTENTS

[0005] The utility model aims to overcome the shortcomings of the prior art and provide an outer flow guide cylinder and a flow guide cylinder.

[0006] The utility model achieves the above-mentioned purpose by the following technical solutions.

[0007] The utility model provides an outer flow guide cylinder in the first aspect, which includes a straight-wall main body, a conical-wall cylinder and a bolt. The conical-wall cylinder includes a straight cylinder segment and a variable-diameter cylinder segment arranged in sequence.

[0008] A fixed ring is arranged on the inner diameter surface of one end of the straight-wall main body. The inner diameter of the straight cylinder segment is greater than or equal to the inner diameter of the fixed ring and smaller than the outer diameter of the fixed ring. The fixed ring and the corresponding position of the end part of the straight cylinder segment are both provided with bolt holes for connecting the bolt.

[0009] The utility model provides a flow guide cylinder in the second aspect, which includes an outer flow guide cylinder, a cylinder arranged in the outer flow guide cylinder and a heat preservation layer arranged between the outer flow guide cylinder and the cylinder. The outer flow guide cylinder is the outer flow guide cylinder in the first aspect.

[0010] The utility model has the following advantages:

[0011] The scheme sets the fixing ring on the end diameter surface of the straight wall main body, sets the bolt hole on the corresponding position of the fixing ring and the straight cylinder segment end, the bolt is directly placed in the outer draft tube, the bolt is improved from being installed along the radial direction of the outer draft tube to being installed along the axial direction, the bolt does not directly contact the silicon liquid outside the outer draft tube, the influence of bolt cracking on the use of the outer draft tube is avoided, and the straight wall main body and the conical wall cylinder are convenient to disassemble. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0013] Figure 1 It is a sectional view of the outer draft tube of the present application;

[0014] Figure 2 It is Figure 1 It is an enlarged view of A part in the middle;

[0015] Figure 3 It is a top view of the straight wall main body;

[0016] Figure 4 It is Figure 3 A-A sectional view. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0019] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0020] It should be noted that like reference numerals and letters refer to like items in the several views, and once an item is defined in one view, it should not be further defined and explained in subsequent views.

[0021] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship commonly placed when the utility model product is used, or is the orientation or position relationship commonly understood by those skilled in the art, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0022] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] As shown in Figures 1 to 4 The utility model discloses a first aspect provides an outer flow guide cylinder, including straight wall main body 1, conical wall cylinder 2 and bolt, wherein, conical wall cylinder 2 includes the straight cylinder section 21 and the reducing cylinder section 22 that are sequentially arranged, the inner diameter surface of straight wall main body 1 one end is provided with a fixed ring 11, the inner diameter of straight cylinder section 21 is greater than or equal to the inner diameter of fixed ring 11 and less than the outer diameter of fixed ring 11, the fixed ring 11 with the corresponding position of straight cylinder section 21 end part are provided with bolt hole 3 for connecting bolt.

[0024] Adopt the above structure, through setting fixed ring on the end inner diameter surface of straight wall main body, through setting bolt hole in the corresponding position of fixed ring and straight cylinder section 21 end, bolt is directly placed in outer flow guide cylinder, bolt is improved from installing along the radial of outer flow guide cylinder to installing along the axial, will not directly contact with the silicon liquid outside outer flow guide cylinder, avoids bolt to crack.

[0025] The preparation material of straight wall main body 1, conical wall cylinder 2 and bolt can all be made of existing material, such as graphite, tungsten molybdenum, carbon / carbon composite material and the like.

[0026] In order to enhance the stability of the connection between the straight wall body 1 and the conical wall cylinder 2 and reduce the thickness of the fixing ring 11, the inner diameter of the straight cylinder section 21 is equal to the inner diameter of the fixing ring 11, and the thickness of the fixing ring 11 is equal to the wall thickness of the straight cylinder section 21. It should be noted that the thickness here refers to the difference between the inner diameter and the outer diameter of the fixing ring.

[0027] In order to enhance the stability of the connection between the straight wall body 1 and the conical wall cylinder 2, the bolt holes are multiple and uniformly distributed along the circumference of the fixing ring 11. Further, the bolt holes are at least 8. For example, referring to Figure 3 , there are 30 bolt holes along the circumference of the fixing ring 11.

[0028] In order to facilitate the connection and fixation of the straight wall body 1, the other end of the straight wall body 1 is provided with a hanging ring 13, and the hanging ring 13 is provided with a mounting hole 12.

[0029] The utility model discloses a second aspect provides a flow guiding cylinder, including outer flow guiding cylinder, the cylinder of being placed in the outer flow guiding cylinder, the heat preservation layer of being placed between the outer flow guiding cylinder and cylinder, the outer flow guiding cylinder is one kind of outer flow guiding cylinder in the first aspect and any one possible design thereof.

[0030] It should be noted that the structure of the cylinder, the structure of the heat preservation layer and the position and connection relationship between the outer flow guiding cylinder can be realized by the prior art in this scheme, so this scheme does not repeat the description of this part.

[0031] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An outer guide cone, comprising a straight-wall main body (1), a conical-wall cylinder (2) and bolts, characterized in that: the conical-wall cylinder (2) comprises a straight cylinder section (21) and a variable-diameter cylinder section (22) arranged in sequence; a fixed ring (13) is arranged on the inner diameter surface of one end of the straight-wall main body (1), the inner diameter of the straight cylinder section (21) is greater than or equal to the inner diameter of the fixed ring (11) and less than the outer diameter of the fixed ring (11), and the fixed ring (11) and the corresponding position of the end of the straight cylinder section (21) are both provided with bolt holes (3) for connecting the bolts.

2. An outer conductor as claimed in claim 1, characterized in that: the inner diameter of the straight cylinder section (21) is equal to the inner diameter of the fixed ring (11) and the thickness of the fixed ring (11) is equal to the wall thickness of the straight cylinder section (21).

3. An outer conductor as defined in claim 1, wherein: The bolt holes (3) are multiple and uniformly distributed circumferentially along the fixed ring (11).

4. An outer conductor as defined in claim 1, wherein: The bolt holes are at least 8.

5. An outer conductor as defined in claim 1, wherein: The other end of the straight-wall main body (1) is provided with a hanging ring (13), and the hanging ring (13) is provided with a mounting hole (12).

6. A flow guide comprising an outer flow guide, a barrel disposed within the outer flow guide, and an insulating layer disposed between the outer flow guide and the barrel, wherein: The outer guide cone is any one of the outer guide cones according to claims 1 to 4.

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