CN111167377A - An arc-shaped top hammer type four-sided top ultra-high pressure device - Google Patents
An arc-shaped top hammer type four-sided top ultra-high pressure device Download PDFInfo
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- CN111167377A CN111167377A CN202010037856.1A CN202010037856A CN111167377A CN 111167377 A CN111167377 A CN 111167377A CN 202010037856 A CN202010037856 A CN 202010037856A CN 111167377 A CN111167377 A CN 111167377A
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- 239000000463 material Substances 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 230000002706 hydrostatic effect Effects 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract description 2
- 239000010432 diamond Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
- B01J3/065—Presses for the formation of diamonds or boronitrides
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Abstract
一种弧形顶锤式四面顶超高压装置，所述装置包括类圆筒型结构的压缸和通过过盈配合安装在压缸外侧的支撑环，以及通过过盈配合安装在支撑环外侧的对中支撑环，所述压缸的上下两端的中部分别设置有相互对称的顶锤，且所述对中支撑环的两侧分别设置径向且相互对称环抱的弧形顶锤。本发明使用上下及左右两侧的四个顶锤对压缸加压，压受力更加接近“静水压力”，使压缸能够承受更大的压力，具有更好的保压性能的同时，还保持了两面顶压缸的保温性能，而且侧面使用弧形顶锤加压，不会存在预应力松弛和蠕变的现象，使压缸在工作时一直处在稳定压力作用下，疲劳强度高，不容易破坏，加压的稳定性更高，具有非常理想的技术效果。
An arc-shaped top hammer type four-sided top super high pressure device, the device comprises a cylinder-like structure pressure cylinder, a support ring installed outside the pressure cylinder through interference fit, and a support ring installed outside the support ring through interference fit. For the centering support ring, the middle parts of the upper and lower ends of the pressure cylinder are respectively provided with mutually symmetrical top hammers, and the two sides of the centering support ring are respectively provided with radial and mutually symmetrical arc top hammers. The present invention uses four top hammers on the upper, lower, left and right sides to pressurize the pressure cylinder, and the pressure force is closer to the "hydrostatic pressure", so that the pressure cylinder can bear greater pressure, and has better pressure-holding performance. The thermal insulation performance of the top pressure cylinder on both sides is maintained, and the side is pressurized with an arc top hammer, so there is no prestress relaxation and creep phenomenon, so that the pressure cylinder is always under the action of stable pressure during operation, and the fatigue strength is high. It is not easy to be damaged, and the stability of pressurization is higher, and it has a very ideal technical effect.
Description
Technical Field
The invention relates to the technical field of ultrahigh pressure and mechanical manufacturing, in particular to an arc-shaped top hammer type four-side top ultrahigh pressure device.
Background
The invention relates to a double-side top ultrahigh pressure device, which is invented by H.T.H al of the company G.E in the U.S. initially, can generate high pressure of 5-20G Pa, and a double-side top ultrahigh pressure die is one of key parts for synthesizing diamond, and is widely applied to producing gem-grade diamond due to good pressure maintaining performance, stable pressure and large pressure, wherein a pressure cylinder is made of hard alloy and is expensive, the pressure cylinder is the most main pressure bearing element, the service life and the pressure bearing capacity of the die are main indexes for measuring the level of the die, so the safe use and the reduction of the stress of the pressure cylinder directly influence the production cost and the quality of the diamond, the existing double-side top device mainly adopts a plurality of layers of prestress support rings on the outer wall of the pressure cylinder to generate prestress to reduce the stress of the pressure cylinder, but the outer support ring of the structure can generate the phenomena of stress relaxation, creep and the, the pressure bearing capacity of the pressure cylinder is reduced, and the outmost support ring bears larger tensile stress under the action of prestress, so that the support ring is easy to damage and causes serious explosion.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an arc-shaped anvil type four-side anvil ultrahigh pressure device, which utilizes an arc-shaped anvil to pressurize an outer support ring and fix radial displacement to solve the problems of easy occurrence of undesirable phenomena such as stress relaxation and creep deformation, large device size, low limit pressure, easy damage of support, and explosion.
The technical scheme adopted by the invention is as follows:
the invention provides an arc-shaped top hammer type four-side top ultrahigh pressure device which comprises a cylinder with a cylinder-like structure, a support ring arranged on the outer side of the cylinder in an interference fit manner, and a centering support ring arranged on the outer side of the support ring in an interference fit manner, wherein symmetrical top hammers are respectively arranged in the middle parts of the upper end and the lower end of the cylinder, and arc-shaped top hammers which are radial and symmetrically encircled are respectively arranged on two sides of the centering support ring.
Preferably, the middle area of the outer wall of the centering support ring is provided with a radial annular groove, and the arc-shaped top hammers are respectively and symmetrically encircled in the annular groove.
Preferably, the pressure cylinder is made of cemented carbide material and the support ring is made of high alloy steel material.
Compared with the prior art, the invention has the following beneficial effects:
according to the arc-shaped top hammer type four-side top ultrahigh pressure device, the four top hammers on the upper side, the lower side, the left side and the right side are used for pressurizing the pressure cylinder, so that the stress of the pressure cylinder is closer to the hydrostatic pressure, the pressure cylinder can bear higher pressure, the pressure maintaining performance is better, and the heat insulation performance of the two-side top pressure cylinder is kept. Because ordinary two sides top ultrahigh pressure device uses "precompression principle" can take place stress relaxation and creep phenomenon through the certain time and under the higher condition of temperature, lead to pressing the jar inefficacy, and the side uses the pressurization of arc top hammer, can not have the phenomenon of prestressing force relaxation and creep, make the pressure jar be in under the steady pressure effect at the during operation always, it is good to press jar pressurize performance, fatigue strength is high, be difficult to destroy, simultaneously because two top hammers of centering support ring's effect messenger side can the centering, make the stability of pressurization higher.
Drawings
Fig. 1 is a schematic view of an overall assembly structure of an embodiment of an arc-shaped top hammer type four-side-top ultrahigh pressure device provided by the invention;
figure 2 is an exploded isometric view of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
It should be noted that in the description of the present invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not mean that a device or an element must have a specific orientation, be configured and operated in a specific orientation.
Referring to fig. 1 and 2, a specific structure of an embodiment of an arc top hammer type four-side top ultra high pressure device according to the present invention is shown. In this embodiment, the apparatus includes a press cylinder 1, a support ring 2, a centering support ring 3, two jack hammers 4, and two arc-shaped jack hammers 5.
The pressure cylinder 1 is of a cylinder-like structure and is made of hard alloy, the support ring 2 is mounted on the outer wall of the pressure cylinder 1 in an interference fit mode and made of high alloy steel, and the support ring 2 is mainly used for reducing the tensile stress of the pressure cylinder 1 in the working state through prestress generated by interference; the two top hammers 4 are respectively and symmetrically arranged at the centers of the upper end and the lower end of the pressure cylinder 1, and the two top hammers 4 are main structures for generating pressure; the centering support ring 3 is installed on the outer wall of the support ring 2 in an interference fit manner, a radial annular groove is arranged in the middle area of the outer wall of the centering support ring 3, the two arc-shaped top hammers 5 are respectively and symmetrically held on the left side and the right side inside the annular groove 31, rod-shaped top hammer seats 51 radially extending outwards for a certain distance are arranged on the outer sides of the middle parts of the arc-shaped top hammers 5, the two arc-shaped top hammers 5 apply constant pretightening force to the centering support ring 3 by utilizing the centering property of the two arc-shaped top hammers and limit the radial displacement of the centering support ring 3, the pressure cylinder 1 can bear constant pressure by the structure without being influenced by time and temperature, the pressure cylinder 1 can be better protected under the condition, the pressure cylinder 1 is not easy to damage, the radial displacement is small, the pressure maintaining performance of the pressure cylinder 1 is better, the generation of gem, and the quality of the produced diamond is improved.
The centering support ring 3 applies prestress to the ultrahigh pressure device by utilizing the centering property of the two arc-shaped top hammers 5 on the side surface, the radial displacement of the ultrahigh pressure device can be limited, the pressure cylinder 1 can bear larger pressure, and the phenomena of stress relaxation, creep deformation and the like of the prestress generated by interference can not occur due to the prestress provided by the top hammers, and the fatigue life of the ultrahigh pressure device can be prolonged due to stable pressurization
The support ring 2 mainly reduces the tensile stress of the pressure cylinder 1 in the working state through the prestress generated by interference, so as to play a role in protecting the pressure cylinder 1, the two top hammers 4 arranged at the centers of the conical surfaces at the upper end and the lower end of the pressure cylinder 1 are main structures for generating pressure, the two top hammers 4 generate ultrahigh pressure by extruding pressure transfer media on the conical surfaces at the upper end and the lower end of the pressure cylinder 1, and the phenomena of stress relaxation, creep deformation and the like which generate the prestress by the interference can not occur because the top hammers 4 provide the prestress; the outer layer of the support ring 2 is sleeved with a centering support ring 3 which is installed in an interference fit mode, the centering support ring 3 is used for pre-tightening the support ring 2 to prevent the support ring 2 from being damaged, and the two arc-shaped top hammers 5 on the side surface can be well centered, so that the arc-shaped top hammers 5 are more uniformly loaded, stable pressure is favorably formed, diamonds with better quality can be synthesized, and meanwhile, the fatigue life of the ultrahigh pressure device can be effectively prolonged due to stable pressurization; arc top hammer 5 has adopted convex structure laminating centering support ring 3, makes top hammer 4 structure adjust well, prevents that the unbalanced loading from leading to pressing jar 1 by the destruction scheduling problem, and this kind of structure make full use of "big mass supports principle" and "precompression principle", makes and press jar 1 and support ring 2 stress distribution more reasonable.
The working process and principle of the invention are as follows: firstly, two arc-shaped top hammers 5 are utilized to simultaneously pressurize the centering support ring 3 of the outer layer at a constant speed to generate stable prestress, the two top hammers 4 simultaneously pressurize the pressure cylinder 1 up and down at a constant speed, the pressurization is stopped when the stroke of the top hammers 4 reaches the pressure of 6000MPa, because the external part pre-stresses the supporting ring 3, pre-pressure is generated on the pressure cylinder 1, 6000MPa pressure generated inside the pressure cylinder 1 overcomes the pre-pressure to generate tensile stress, therefore, the pressure bearing capacity of the pressure cylinder 1 is improved, the anvil 4 and the arc anvil 5 are kept fixed after the preset pressure is reached, the pressure maintaining is carried out on the pressure cylinder 1, when the pressure maintaining reaches the time, the two top hammers 4 release the pressure of the pressure cylinder, the original state is recovered, after the pressure releasing of the two top hammers 4 is finished, the arc-shaped anvil 5 is released to a certain extent, so that the radial stress of the centering support ring 3 is almost zero, and the safety of the anvil is protected.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010037856.1A CN111167377B (en) | 2020-01-14 | 2020-01-14 | Arc top hammer type four-side top ultrahigh-pressure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010037856.1A CN111167377B (en) | 2020-01-14 | 2020-01-14 | Arc top hammer type four-side top ultrahigh-pressure device |
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| CN111167377A true CN111167377A (en) | 2020-05-19 |
| CN111167377B CN111167377B (en) | 2021-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010037856.1A Active CN111167377B (en) | 2020-01-14 | 2020-01-14 | Arc top hammer type four-side top ultrahigh-pressure device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113713716A (en) * | 2021-09-29 | 2021-11-30 | 沈阳四达液压有限公司 | Novel diamond synthesis equipment |
| CN118910722A (en) * | 2024-09-23 | 2024-11-08 | 吴宣成 | Method for reducing manufacturing cost of artificial diamond monocrystal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002079073A (en) * | 2000-09-07 | 2002-03-19 | Sumitomo Heavy Ind Ltd | Apparatus for generating ultrahigh pressure in solid |
| CN1623642A (en) * | 2003-12-04 | 2005-06-08 | 蔡博 | Method for working of two-sided press of cubic apparatus artificial diamond press and its top hammer |
| US20060288927A1 (en) * | 2005-06-24 | 2006-12-28 | Robert Chodelka | System and high pressure, high temperature apparatus for producing synthetic diamonds |
| CN102658061A (en) * | 2012-04-19 | 2012-09-12 | 山东日能超硬材料有限公司 | Pressure-equalizing type diamond synthesis device and diamond synthesis method based on device |
| CN203329701U (en) * | 2013-05-14 | 2013-12-11 | 焦作市华科液压机械制造有限公司 | Hinge type cubic hydraulic press |
-
2020
- 2020-01-14 CN CN202010037856.1A patent/CN111167377B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002079073A (en) * | 2000-09-07 | 2002-03-19 | Sumitomo Heavy Ind Ltd | Apparatus for generating ultrahigh pressure in solid |
| CN1623642A (en) * | 2003-12-04 | 2005-06-08 | 蔡博 | Method for working of two-sided press of cubic apparatus artificial diamond press and its top hammer |
| US20060288927A1 (en) * | 2005-06-24 | 2006-12-28 | Robert Chodelka | System and high pressure, high temperature apparatus for producing synthetic diamonds |
| CN102658061A (en) * | 2012-04-19 | 2012-09-12 | 山东日能超硬材料有限公司 | Pressure-equalizing type diamond synthesis device and diamond synthesis method based on device |
| CN203329701U (en) * | 2013-05-14 | 2013-12-11 | 焦作市华科液压机械制造有限公司 | Hinge type cubic hydraulic press |
Non-Patent Citations (1)
| Title |
|---|
| 姚裕成等: "《人造金刚石和超高压高温技术》", 31 March 1996, 化学工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113713716A (en) * | 2021-09-29 | 2021-11-30 | 沈阳四达液压有限公司 | Novel diamond synthesis equipment |
| CN118910722A (en) * | 2024-09-23 | 2024-11-08 | 吴宣成 | Method for reducing manufacturing cost of artificial diamond monocrystal |
| CN118910722B (en) * | 2024-09-23 | 2025-12-09 | 吴宣成 | Method for reducing manufacturing cost of artificial diamond monocrystal |
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| CN111167377B (en) | 2021-09-14 |
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