CN202107798U

CN202107798U - Heat preservation barrel applied in laser crystal growing process

Info

Publication number: CN202107798U
Application number: CN2011201779325U
Authority: CN
Inventors: 周元生; 万文
Original assignee: ANHUI HUANCHAO PHOTOELECTRIC TECHNOLOGY Co Ltd
Current assignee: ANHUI HUANCHAO PHOTOELECTRIC TECHNOLOGY Co Ltd
Priority date: 2011-05-30
Filing date: 2011-05-30
Publication date: 2012-01-11
Anticipated expiration: 2021-05-30

Abstract

The utility model discloses a heat preservation barrel applied in a laser crystal growing process, which is characterized in that the heat preservation barrel is in a split structure that the whole heat preservation barrel is divided into unit members. A tubular body is formed by splicing all the unit members. The heat preservation barrel applied in the laser crystal growing process can effectively avoid heat deformation caused by different heat expansion systems, so the reliability of the production process can be guaranteed.

Description

A kind of heat-preservation cylinder that is applied in the laser crystal growth process

Technical field

The utility model relates to the crucible insulation device in a kind of process of growth that is applied in laser crystals.

Background technology

Laser crystals is widely used in fields such as space flight and aviation, industry, military affairs, medical treatment; And the production technique of laser crystals also is in improvement for many years, to improve and development, and the shove charge equipment of laser crystals mainly still is the different size processed of raw material, the lagging material of different indexs with the zirconium white at present.The process of laser crystal growth is a good process of high-temperature stability; If the crucible lagging material is out of shape because of high temperature, or even cracking, the warm field system that has designed moulding then can be changed; This will increase production cost greatly, increase the risk of growing crystal greatly.

The integral body of the growth of laser crystals is divided into two parts up and down, and to the insulation of lower part, original structure is the zirconium white thermal insulation layer cylindraceous that an integral body is arranged in the outside of crucible, and the thickness of thermal insulation layer is 14-17mm, highly is 180-200mm.In the pyroprocess of crystal growth, it is to be in more than 1200 degrees centigrade that most time is arranged.And having the zirconium white thermal insulation layer in the structure owing to adopt one-piece construction, its thickness is bigger, when making, is difficult to guarantee the unanimity of thermal insulation layer density.In hot environment, the thermal insulation layer density less place that compares, thermal expansivity will be corresponding littler; The thermal expansivity that density is big is then big; For an one-piece construction, the different thermal expansion meeting on the different positions deforms one-piece construction, even cracking.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of heat-preservation cylinder that is applied in the laser crystal growth process is provided, the thermal distortion of avoiding the difference owing to hot expansion system to take place, thus guarantee the safety of production process.

The utility model technical solution problem adopts following technical scheme:

The constructional feature that the utility model is applied in the heat-preservation cylinder in the laser crystal growth process is: heat-preservation cylinder is set for dividing body structure, said minute body structure is that whole heat-preservation cylinder split is set to each unit member, and said each unit member is spliced to form cylindrical body each other.

The constructional feature that the utility model is applied in the heat-preservation cylinder in the laser crystal growth process also is:

Being distributed as of each unit member in the said heat-preservation cylinder: said heat-preservation cylinder is set is the overlaying structure of a plurality of annulus in the axial direction, said each annulus is divided into each tile shape on circumference; Be that step surface is rabbeted each other between the adjacent tile.

Compared with present technology, the utility model beneficial effect is embodied in:

1, the utility model splits the one-piece construction of heat-preservation cylinder; Each unit member after the fractionation is because volume is little; Itself is very little in the difference of coefficients of the thermal expansion at different positions place; Therefore heat distortion amount is very little, therefore greatly reduces in the existing structure because the increase of the production cost that thermal distortion possibly bring and the risk of crystal growth.

2, the branch body structure of the utility model makes and can split arrive each piece tile for the maintenance of heat-preservation cylinder, and, because each piece tile can independently be changed, greatly reduce maintenance cost, and maintenance service is very convenient.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model unit member synoptic diagram;

Label among the figure: 1 heat-preservation cylinder; The 1a unit member; The 1b tile;

Embodiment

Referring to Fig. 1, Fig. 2, heat-preservation cylinder 1 is set for dividing body structure in the present embodiment, dividing body structure is that whole heat-preservation cylinder 1 split is set to each unit member 1a, each unit member 1a is spliced to form cylindrical body each other.

In the practical implementation, being distributed as of each unit member 1a in the heat-preservation cylinder 1:

Heat-preservation cylinder 1 is set is the overlaying structure of a plurality of annulus in the axial direction, each annulus is divided into each tile shape on circumference; Be that step surface is rabbeted each other between the adjacent tile.

Annulus shown in Figure 2 is divided into six tile 1b on circumference; The central angle of every tile 1b is 60 degree, highly is 50-55mm, and interior radius of circle r is 170-180mm; Exradius R is 185-197mm, is to rabbet each other with step surface between the adjacent tile 1b on the annulus; According to present growth technique, the number of plies of synergetic annulus generally is the 4-7 layer, and interlayer keeps verticality can form whole heat-preservation cylinder structure when mounted.

Each piece tile 1b in the present embodiment can change separately, and this form has greatly reduced production cost, and in the design of temperature field, can more easily change and adjust.

In the concrete construction, after coincideing each layer well, correct with concentric(al) circles, finally reach vertical and concentric requirement, stack is successively accomplished up to whole insulation construction again.

Claims

1. heat-preservation cylinder that is applied in the laser crystal growth process; It is characterized in that: heat-preservation cylinder (1) is set for dividing body structure; Said minute body structure is that whole heat-preservation cylinder (1) split is set to each unit member (1a), and said each unit member (1a) is spliced to form cylindrical body each other.

2. the heat-preservation cylinder that is applied in the laser crystal growth process according to claim 1; It is characterized in that being distributed as of each unit member (1a) in the said heat-preservation cylinder (1): said heat-preservation cylinder is set is the overlaying structure of a plurality of annulus in the axial direction, said each annulus is divided into the shape of each tile (1b) on circumference; Be that step surface is rabbeted each other between the adjacent tile (1b).