CN202263573U - Reaction chamber for improving internal temperature and pressure distribution of high-temperature and high-pressure synthesis cavity - Google Patents
Reaction chamber for improving internal temperature and pressure distribution of high-temperature and high-pressure synthesis cavity Download PDFInfo
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- CN202263573U CN202263573U CN 201120295353 CN201120295353U CN202263573U CN 202263573 U CN202263573 U CN 202263573U CN 201120295353 CN201120295353 CN 201120295353 CN 201120295353 U CN201120295353 U CN 201120295353U CN 202263573 U CN202263573 U CN 202263573U
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Abstract
The utility model relates to a reaction chamber for improving the internal temperature and pressure distribution of a high-temperature and high-pressure synthesis cavity. The reaction chamber comprises a pyrophyllite block in which a hollow cavity is formed, wherein a resistance heating body is axially arranged in the hollow cavity of the pyrophyllite block; the structure of the hollow cavity of the pyrophyllite block is matched with the structure of the resistance heating body; the resistance heating body is not higher than the pyrophyllite block; the wall thickness of the axial middle part of the resistance heating body is greater than those of two ends; and the pyrophyllite block has an integrated structure. By adoption of the integrated structure, the pyrophyllite block has a better isolation and heat preservation function than the pyrophyllite block which is divided into an upper part and a lower part, and reduces the influence of a temperature and pressure gradient on a synthesized ultrahard material and a product in the reaction chamber; and therefore, cubic boron nitride and artificial diamond products with high quality are synthesized.
Description
Technical field
The utility model belongs to the superhard material synthesis technical field, is specifically related to a kind of reative cell that can improve high-temperature high-pressure synthetic cavity internal temperature pressure distribution.
Background technology
Synthesizing cubic boron nitride and diamond are accomplished under high-temperature and high-pressure conditions, and outside hyperpressure makes generation superelevation pressure in the reative cell through the sealing and the transmission of pressure transmission, insulation, dielectric.Generally be in the pyrophillite piece, calandria to be set; And the general inner chamber of pyrophillite piece place diameter is consistent; The resistance heating body of this pyrophillite piece inner chamber produces high temperature through the electric current heating that the outside provides, and makes the inner HTHP that produces of reative cell to satisfy the condition of growth cubic boron nitride and diamond.Realize in reative cell, inevitably having barometric gradient and thermograde to exist through conduction and transmission owing to be fit to the temperature and pressure of growth conditions.The characteristic of pressure and temperature conduction causes in the existing reative cell pressure and Temperature Distribution unreasonable.With regard to synthesizing cubic boron nitride and diamond, because the design feature of existing cured stone of reative cell middle period and calandria, make that temperature eminence pressure is low in the reative cell, temperature lower pressure height is unfavorable for the growth of material.The situation of this Temperature Distribution incompatibility pressure distributions is along with the expansion of high-temperature high-voltage reaction chamber size becomes more and more obvious.And the constitution water of impurity and pyrophillite gets into synthetic material easily, and the high-temperature phase-change of pyrophillite shrinks and causes easily that also pressure falls.
The applying date is that the Chinese patent CN02202241.4 of 2002.01.10 discloses a kind of reative cell that is used to adjust the high-temperature high-pressure synthetic cavity interior temperature distribution; This reative cell comprises the pyrophillite piece of being with cavity and is arranged on the resistance heating body in the pyrophillite piece; The pyrophillite piece is that the two parts up and down by symmetry constitute; The cavity diameter of one of which end is greater than the cavity diameter of the other end in the inner chamber of each several part pyrophillite piece, resistance heating body vertically the center wall thickness greater than the wall thickness at two ends.Though this patent can change the Temperature Distribution of HTHP synthetic reaction chamber interior, the up and down two-part split design of pyrophillite piece can not be played good heat-insulation and heat-preservation effect.
The utility model content
The purpose of the utility model provides a kind of reative cell that can improve high-temperature high-pressure synthetic cavity internal temperature pressure distribution; To solve pressure and the irrational problem of temperature in the existing reative cell, reach the problem that pyrophillite piece split design can not be played good heat insulation and preservation effect.
For realizing above-mentioned purpose; The reative cell that improves high-temperature high-pressure synthetic cavity internal temperature pressure distribution of the utility model is provided with the pyrophillite piece of cavity in comprising, axially be provided with resistance heating body in the cavity of this pyrophillite piece; Pyrophillite piece cavity structure cooperates the setting of resistance heated body structure; Said resistance heating body height is not higher than the height of pyrophillite piece, and the axial middle part wall thickness of resistance heating body is greater than the two ends wall thickness, the said pyrophillite piece structure that is formed in one.
Further, said resistance heating body inwall is used for being provided with water proof buffering bushing pipe with the synthesis material contact position.
Further, said resistance heating body is to be made up of tubular calandria and the axial outer thickening calandria of being located at tubular calandria middle part.
Further, be formed in one structure or divide body structure of said tubular calandria and thickening calandria.
The reative cell middle period of improving high-temperature high-pressure synthetic cavity internal temperature pressure distribution of the utility model, cured stone adopted integrative-structure; Relative separation becomes two-part pyrophillite piece up and down; The temperature, pressure that has improved HTHP synthetic reaction chamber interior distributes; With the pressure gradient of adaptive response chamber interior, the inner zone that adapts to cubic boron nitride and diamond growth of reative cell is broadened, synthesize the cubic boron nitride and the diamond product of high-quality more easily.The utility model middle period, cured stone adopted integrative-structure; Relative separation becomes two-part pyrophillite piece up and down; Not only played good isolation insulation effect; And improved of the influence of the interior temperature, pressure gradient of reative cell to synthetic superhard material and goods, synthesize the cubic boron nitride and the diamond product of high-quality.
The adding of water proof buffering bushing pipe can prevent that impurity and pyrophillite constitution water from getting into synthetic material, and the high-temperature phase-change that also can reduce pyrophillite shrinks the pressure that causes and falls, and improves the quality of products.
Description of drawings
Fig. 1 is the reative cell cross-sectional view of the utility model;
Fig. 2 is the distressed structure sketch map of thickening calandria in the utility model.
The specific embodiment
The reative cell that can improve high-temperature high-pressure synthetic cavity internal temperature pressure distribution of the utility model; Like Fig. 1, shown in 2; Be provided with the pyrophillite piece 1 of cavity 2 in comprising, axially be provided with resistance heating body in the cavity of this pyrophillite piece 1, pyrophillite piece 1 cavity structure cooperates the setting of resistance heated body structure; The resistance heating body height is not higher than the height of pyrophillite piece; That is to say in the cavity of pyrophillite piece 1 up and down the diameter at two ends more than or equal to the cavity diameter of centre, and the axial middle part wall thickness of resistance heating body is greater than the two ends wall thickness, pyrophillite piece 1 structure that is formed in one.The resistance heating body inwall is used for being provided with water proof buffering bushing pipe 4 with the synthesis material contact position.Resistance heating body is to be made up of tubular calandria 31 and the axial outer thickening calandria 32 of being located at tubular calandria 31 middle parts.Tubular calandria 31 and thickening calandria 32 structure that is formed in one; Also can be the split structure; The shape of thickening calandria can be the structure of rectangle for the section shown in the thickening calandria 32 among Fig. 1, can be the structure of arc for the section shown in the thickening calandria 33 among Fig. 2 also.The tubular calandria can use the design of same material integrated formed structure also can adopt different materials split structural design with the thickening calandria.
Claims (4)
1. reative cell that improves high-temperature high-pressure synthetic cavity internal temperature pressure distribution; Be provided with the pyrophillite piece of cavity in comprising; Axially be provided with resistance heating body in the cavity of this pyrophillite piece, pyrophillite piece cavity structure cooperates the setting of resistance heated body structure, and said resistance heating body height is not higher than the height of pyrophillite piece; And the axial middle part wall thickness of resistance heating body is characterized in that greater than the two ends wall thickness: the said pyrophillite piece structure that is formed in one.
2. the reative cell that improves high-temperature high-pressure synthetic cavity internal temperature pressure distribution according to claim 1 is characterized in that: said resistance heating body inwall is used for being provided with water proof buffering bushing pipe with the synthesis material contact position.
3. the reative cell that improves high-temperature high-pressure synthetic cavity internal temperature pressure distribution according to claim 1 and 2 is characterized in that: said resistance heating body is to be made up of tubular calandria and the axial outer thickening calandria of being located at tubular calandria middle part.
4. the reative cell that improves high-temperature high-pressure synthetic cavity internal temperature pressure distribution according to claim 3 is characterized in that: be formed in one structure or divide body structure of said tubular calandria and thickening calandria.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120295353 CN202263573U (en) | 2011-08-15 | 2011-08-15 | Reaction chamber for improving internal temperature and pressure distribution of high-temperature and high-pressure synthesis cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120295353 CN202263573U (en) | 2011-08-15 | 2011-08-15 | Reaction chamber for improving internal temperature and pressure distribution of high-temperature and high-pressure synthesis cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202263573U true CN202263573U (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120295353 Expired - Lifetime CN202263573U (en) | 2011-08-15 | 2011-08-15 | Reaction chamber for improving internal temperature and pressure distribution of high-temperature and high-pressure synthesis cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202263573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111672420A (en) * | 2020-06-15 | 2020-09-18 | 山东聊城君锐超硬材料有限公司 | Special-shaped powder pressure heating pipe for diamond synthesis and synthetic block |
-
2011
- 2011-08-15 CN CN 201120295353 patent/CN202263573U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111672420A (en) * | 2020-06-15 | 2020-09-18 | 山东聊城君锐超硬材料有限公司 | Special-shaped powder pressure heating pipe for diamond synthesis and synthetic block |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FUNIK ULTRAHARD MATERIALS CO., LTD. Free format text: FORMER NAME: HE'NAN FUNIK ULTRAHARD MATERIAL CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 450001 Zhengzhou high tech Industrial Development Zone, Henan, Holly Street, No. 16 Patentee after: Rich Nike superhard material limited company Address before: 450001 Zhengzhou high tech Industrial Development Zone, Henan, Holly Street, No. 16 Patentee before: Henan Funik Ultrahard Material Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120606 |