CN212017722U

CN212017722U - Synthetic cavity radial low-temperature gradient difference heat-insulation sealing synthetic block

Info

Publication number: CN212017722U
Application number: CN202020205121.0U
Authority: CN
Inventors: 江雨明; 卞中佩
Original assignee: Suzhou Sibolier Industrial Technology Co ltd
Current assignee: Suzhou Sibolier Industrial Technology Co ltd
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-11-27
Anticipated expiration: 2030-02-25

Abstract

The utility model discloses a radial low temperature gradient heat preservation sealed synthetic block of synthetic cavity, which comprises a sealed pressure transmission block, wherein a cylindrical bearing cavity is arranged in the sealed pressure transmission block, the bearing cavity is provided with an upper area and a lower area for holding composite sheet powder by the configuration of a conductive component, a carbon tube is arranged in each area, a pressure transmission voltage-stabilizing tube is embedded in the carbon tube, one end side surfaces of the pressure transmission voltage-stabilizing tube and the carbon tube are clung to the conductive component, and the other end side surface is clung to a conductive metal plate; the conductive metal plate is provided with a conductive steel ring which is tightly attached to the conductive metal plate, the diameter of the conductive steel ring is equal to that of the bearing cavity, and a sealing pressure transmitting stone is embedded in the conductive steel ring. The beneficial effects of the utility model are mainly embodied in that: the outer circumference and the end side of the composite sheet powder have the same heat productivity, the generation of radial temperature gradient difference is avoided, the temperature difference between the edge and the center of the PDC is reduced, the composite interface of the diamond layer and the hard alloy matrix layer in the PDC is uniform and consistent, and the generation of defect points is avoided.

Description

Synthetic cavity radial low-temperature gradient difference heat-insulation sealing synthetic block

Technical Field

The utility model relates to a synthetic equipment of superhard materials particularly, especially, relate to a synthetic piece is sealed in radial low temperature ladder difference heat preservation of synthetic cavity.

Background

Polycrystalline Diamond Compact (PDC) is a superhard composite material which is formed by sintering diamond micropowder serving as a raw material and hard alloy serving as a substrate under the conditions of high temperature and high pressure in a specific assembly mode. Because of high wear resistance and high impact toughness, the PDC serving as a drill bit cutting element is widely applied to the fields of oil and gas exploitation, mineral deposit exploration and the like.

For example, chinese patent No. 201922394402.5 discloses a sealed composite block with high thermal conductivity and high electrical conductivity, which comprises a pressure transmitting sealing block, wherein the pressure transmitting sealing block is provided with a cylindrical bearing cavity, a heat-insulating pressurizing cylinder is embedded in the bearing cavity, and the diameter of the inner ring of the heat-insulating pressurizing cylinder is equal to the diameter of the bearing cavity; the heat-preservation pressurizing cylinder is internally and tightly embedded with a heat-preservation cylinder, a heating cylinder and a pressure-transmitting and stabilizing cylinder from outside to inside in sequence, an accommodating cavity for accommodating composite sheet powder is arranged in the pressure-transmitting and stabilizing cylinder, pressure-transmitting and stabilizing plates are arranged at two ends of the accommodating cavity, and the diameter of each pressure-transmitting and stabilizing plate is equal to that of the accommodating cavity; the two ends of the bearing cavity are also provided with conductive pressure transmitting and stabilizing plates, the diameter of each conductive pressure transmitting and stabilizing plate is equal to that of the bearing cavity, and the inner side surfaces of the conductive pressure transmitting and stabilizing plates are respectively clung to the end surfaces of the heat-insulating cylinder, the heating cylinder and the pressure transmitting and stabilizing cylinder and the surface of the conductive pressure transmitting and stabilizing plate. However, a temperature gradient exists between the axis and the outer circumferential surface of the polycrystalline diamond compact prepared by using the sealed synthetic block, so that the strength of the polycrystalline diamond compact is reduced, and when the polycrystalline diamond compact is used, a diamond layer in the polycrystalline diamond compact is easy to wear, collapse, crack or fall off from a substrate, so that the service life of a cutting element is reduced or the cutting element fails.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects existing in the prior art and providing a synthetic block with a synthetic cavity, radial low temperature and ladder difference heat preservation and sealing functions.

The purpose of the utility model is realized through the following technical scheme:

a radial low-temperature gradient heat-preservation sealed synthetic block of a synthetic cavity comprises a sealed pressure transmission block, wherein a cylindrical bearing cavity is formed in the sealed pressure transmission block, the bearing cavity is provided with an upper area and a lower area which are used for containing composite sheet powder, a carbon tube is arranged in each area, a pressure transmission voltage-stabilizing tube is embedded in each carbon tube, one side surfaces of the pressure transmission voltage-stabilizing tube and the carbon tube are tightly attached to the conductive assembly, and the other side surface of the pressure transmission voltage-stabilizing tube and the carbon tube are tightly attached to a conductive metal plate; the conductive metal plate is provided with a conductive steel ring which is tightly attached to the conductive metal plate, the diameter of the conductive steel ring is equal to that of the bearing cavity, and a sealing pressure transmitting stone is embedded in the conductive steel ring.

Preferably, the conductive component comprises carbon plates respectively clinging to the end faces of the pressure-transmitting stabilivolt and the carbon tube, and the diameter of each carbon plate is equal to the outer diameter of the carbon tube; and a heat-insulating ring is also arranged between the carbon plates, a carbon block is embedded in the inner ring of the heat-insulating ring, and two side surfaces of the carbon block are respectively clung to the corresponding carbon plates.

Preferably, a heat-insulating cylinder is further embedded in the bearing cavity, an inner ring of the heat-insulating cylinder is tightly attached to the outer circumferential surface of the carbon tube, and the length of the heat-insulating cylinder is equal to the distance between the conductive metal plates.

Preferably, two pressure transmitting and stabilizing plates are arranged in each region, the side surface of one pressure transmitting and stabilizing plate is clung to the carbon plate, and the side surface of the other pressure transmitting and stabilizing plate is clung to the conductive metal plate.

Preferably, the sealing pressure-transmitting block and the sealing pressure-transmitting stone are pyrophyllite pieces.

Preferably, the heat preservation ring and the heat preservation cylinder are magnesium oxide parts or zirconium oxide parts or dolomite parts.

The beneficial effects of the utility model are mainly embodied in that: compared with the prior art, add the carbon plate at the both ends of compound piece powder, when letting in the same electric current, compound piece powder's outer periphery and distolateral all can produce the high heat, realize the temperature compensation at compound piece powder both ends, it is even to have guaranteed that the temperature field distributes in the bearing cavity, avoid the poor production of radial temperature gradient, the temperature difference at PDC edge and center has been reduced, make the compound interface of diamond layer and carbide matrix layer in the PDC even unanimity, the production of defect point has been avoided, when synthesizing major diameter product, the effect is especially showing.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

FIG. 1: the structure of the utility model is schematically shown.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not limited to the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the utility model discloses a radial low temperature gradient of synthetic cavity is poor to keep warm sealed synthetic piece, include the sealed briquetting 1 of biography that is made by the pyrophyllite, it is cylindric to have seted up one in the sealed briquetting 1 of passing and is born the weight of the chamber 11, bear the weight of two regional 12 that are used for holding compound piece powder 100 about the chamber 11 is defined by conductive component 2 configuration, each all be equipped with a carbon pipe 3 in the region 12, the embedding has the biography pressure regulator tube 4 in the carbon pipe 3, pass the one end side of pressure regulator tube 4 and carbon pipe 3 with conductive component 2 hugs closely, and other end side is hugged closely with conductive metal plate 5. The conductive metal plate 5 is provided with a conductive steel ring 6 tightly attached to the conductive metal plate, the diameter of the conductive steel ring 6 is equal to that of the bearing cavity 11, and the conductive steel ring 6 is embedded with a sealing pressure transfer stone 61 made of pyrophyllite. The structure is exquisite, the carbon tube 3 is conductive, so that the composite diamond sheet can keep good conductive and heat-conducting stability in the process of synthesizing the composite diamond sheet at high temperature and high pressure, frequent manual adjustment of the process in the synthesis process is reduced, the synthesized composite diamond sheet is greatly helped in consistency, the power consumption is reduced, and a good foundation is laid for one-person multi-machine synthesis and numerical control automatic synthesis later.

The utility model discloses an another design point lies in: the conductive component 2 comprises a carbon plate 21 respectively clinging to the end faces of the pressure-transmitting stabilivolt 4 and the carbon tube 3, and the diameter of the carbon plate 21 is equal to the outer diameter of the carbon tube 3. A heat preservation ring 22 is further arranged between the carbon plates 21, a carbon block 23 is embedded in the inner ring of the heat preservation ring 22, and two side faces of the carbon block 23 are respectively tightly attached to the corresponding carbon plates 21. This design compares with current, add the carbon plate at the both ends of compound piece powder, when letting in the same electric current, compound piece powder's outer periphery and distolateral calorific capacity are the same, realize the temperature compensation at compound piece powder both ends, it is even to have guaranteed that bearing cavity temperature field distributes, avoid the poor production of radial temperature gradient, the difference in temperature at PDC edge and center has been reduced, make the compound interface on diamond layer and carbide substrate layer in the PDC even unanimity, the production of defect point has been avoided, when synthesizing major diameter product, the effect is especially showing.

Furthermore, two pressure transmitting and stabilizing plates 13 are arranged in each area 12, one pressure transmitting and stabilizing plate 13 is tightly attached to the carbon plate 21, the other pressure transmitting and stabilizing plate 13 is tightly attached to the conductive metal plate 5, and the pressure transmitting and stabilizing plates 13 and the pressure transmitting and stabilizing tubes 4 are both high-density sodium chloride and can play a role in transmitting and stabilizing pressure.

In this embodiment, a heat-insulating cylinder 7 is further embedded in the bearing cavity 11, an inner ring of the heat-insulating cylinder 7 is tightly attached to the outer circumferential surface of the carbon tube 3, and the length of the heat-insulating cylinder 7 is equal to the distance between the conductive metal plates 5. Preferably, the heat-preserving cylinder 7 and the heat-preserving ring 22 are both magnesium oxide pieces or zirconium oxide pieces or dolomite pieces.

The combined synthetic block is placed in a cubic press, when an upper anvil and a lower anvil are contacted with a conductive steel ring 6, high current passes through the conductive steel ring 6, a conductive metal plate 5, a carbon tube 3 and a carbon plate 21, the high conductivity and the high thermal conductivity of the carbon tube 3 and the carbon plate 21 are utilized, and only a small power input is required to be externally supplied, so that the current in the longitudinal direction and the transverse direction can be generated inside, particularly, great heat is generated on the surface of a diamond to be synthesized, and then the heat preservation characteristics of a pressure transmitting and stabilizing tube 4, a pressure transmitting and stabilizing plate 13 and a heat preservation cylinder 7 are utilized to preserve the heat inside a square to the maximum extent, thereby completing the synthesis of the diamond composite sheet more efficiently.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. Synthetic cavity radial low temperature gradient difference heat preservation sealing synthetic block, including sealed biography briquetting (1), its characterized in that: a cylindrical bearing cavity (11) is formed in the sealed pressure transmission block (1), the bearing cavity (11) is provided with an upper region (12) and a lower region (12) which are used for containing composite sheet powder (100) and are defined by a conductive component (2), a carbon tube (3) is arranged in each region (12), a pressure transmission voltage-stabilizing tube (4) is embedded in each carbon tube (3), one end side surfaces of the pressure transmission voltage-stabilizing tube (4) and the carbon tube (3) are tightly attached to the conductive component (2), and the other end side surface of the pressure transmission voltage-stabilizing tube is tightly attached to a conductive metal plate (5); the conductive metal plate (5) is provided with a conductive steel ring (6) tightly attached to the conductive metal plate, the diameter of the conductive steel ring (6) is equal to that of the bearing cavity (11), and a sealing pressure transfer stone (61) is embedded in the conductive steel ring (6).

2. The radial low-temperature gradient heat-insulating sealed synthetic block of the synthetic cavity as claimed in claim 1, wherein: the conductive component (2) comprises a carbon plate (21) which is respectively clung to the end side surfaces of the pressure-transmitting stabilivolt (4) and the carbon tube (3), and the diameter of the carbon plate (21) is equal to the outer diameter of the carbon tube (3); a heat-insulating ring (22) is further arranged between the carbon plates (21), a carbon block (23) is embedded in the inner ring of the heat-insulating ring (22), and two side faces of the carbon block (23) are respectively tightly attached to the corresponding carbon plates (21).

3. The radial low-temperature gradient heat-insulating sealed synthetic block of the synthetic cavity as claimed in claim 2, wherein: a heat preservation cylinder (7) is further embedded into the bearing cavity (11), the inner ring of the heat preservation cylinder (7) is tightly attached to the outer circumferential surface of the carbon tube (3), and the length of the heat preservation cylinder (7) is equal to the distance between the conductive metal plates (5).

4. The radial low-temperature gradient heat-insulating sealed synthetic block of the synthetic cavity as claimed in claim 2, wherein: two pressure transmitting and stabilizing plates (13) are arranged in each area (12), the side surface of one pressure transmitting and stabilizing plate (13) is tightly attached to the carbon plate (21), and the side surface of the other pressure transmitting and stabilizing plate (13) is tightly attached to the conductive metal plate (5).

5. The radial low-temperature gradient heat-insulating sealed synthetic block of the synthetic cavity as claimed in claim 4, wherein: the sealing pressure transfer block (1) and the sealing pressure transfer stone (61) are pyrophyllite pieces.

6. The radial low-temperature gradient heat-insulating sealed synthetic block of the synthetic cavity as claimed in claim 3, wherein: the heat preservation ring (22) and the heat preservation cylinder (7) are magnesium oxide pieces, zirconium oxide pieces or dolomite pieces.