CN219010518U

CN219010518U - Heat preservation device

Info

Publication number: CN219010518U
Application number: CN202223561871.XU
Authority: CN
Inventors: 申富强; 申富胜; 闫坤; 牛龙祥
Original assignee: Q Carbon Material Co ltd
Current assignee: Shanghai Qijie New Materials Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-12
Anticipated expiration: 2032-12-30

Abstract

The utility model relates to a heat preservation device, which is applied to a high-temperature manufacturing process, and comprises an upper hoop, N+1 middle face parts, N middle hoops and a lower hoop, wherein N is an integer greater than or equal to 0; the middle face is stacked circumferentially by a plurality of middle face jigsaw bars, the place where two middle face jigsaw bars are connected comprises a connecting structure, the cross section of each middle face jigsaw bar is hexagonal, or the cross section of each middle face jigsaw bar is quadrilateral and one side of each middle face jigsaw bar is straight. The processing degree of difficulty of the middle face piece of the existing heat preservation barrel is solved, and processing cost can be greatly saved after the middle face piece comprising a plane is adopted.

Description

Heat preservation device

Technical Field

The utility model relates to an application of a carbon fiber composite material in the production and manufacturing processes of a single crystal furnace, a high temperature furnace and a gas quenching furnace, in particular to a heat preservation device manufactured by adopting a planar middle-face splicing strip circumferential stacking mode.

Background

In the production of single crystal silicon, a Czochralski method (CZ method), which is a method of pulling a single crystal from a melt in a vertical direction, is currently widely used. In the prior art equipment, as the crystal diameter of the monocrystalline silicon grows thicker, the diameter of the corresponding monocrystalline furnace also increases, so that the reliability of a thermal field is also required to be higher, and other requirements such as a high-temperature furnace and a gas quenching furnace are also required. The larger the diameter is, the larger the wall thickness is required, so the weight is heavy, the prior art already uses a light graphite or carbon fiber winding mode to manufacture the heat preservation device, but the heat preservation device is manufactured by hollowing out large graphite blocks, the cost is too high, and the large material and the large furnace cannot be found for production; further, when the fiber cloth is wound and molded by firing a coating resin, there is a problem that the fiber cloth is easily deformed due to stress.

In order to overcome the above-mentioned problem, patent No. 201721801104.8 proposes a heat preservation device, a splicing mode is adopted, wherein a used hoop adopts a multi-layer splicing structure, and a middle-face splicing strip adopts an arc-shaped splicing structure, so that although the problem is solved, the arc-shaped face has large processing time and high cost in processing.

Therefore, the heat preservation device of the high-temperature furnace in the prior art has a lifting place on the structure of the product.

Disclosure of Invention

The utility model aims to provide a heat preservation device of a carbon fiber composite material, which adopts a middle-face splicing strip comprising a plane so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the heat preservation device comprises an upper hoop, N+1 middle face parts, N middle hoops and a lower hoop, wherein N is an integer greater than or equal to 0; the middle face is stacked circumferentially by a plurality of middle face jigsaw bars, the place where two middle face jigsaw bars are connected comprises a connecting structure, the cross section of each middle face jigsaw bar is hexagonal, or the cross section of each middle face jigsaw bar is quadrilateral and one side of each middle face jigsaw bar is straight.

According to the heat preservation device of the preferred embodiment of the application, the middle face splicing bar comprises an upper convex rib and a lower convex rib.

According to the heat preservation device of the preferred embodiment of the application, the upper end face of the middle face splicing strip is a plane, and the lower end face of the middle face splicing strip is a plane.

According to the heat preservation device of the preferred embodiment of the application, the wall thickness of the middle face splicing strip is more than or equal to 1mm.

According to the heat preservation device of the preferred embodiment of the application, the connecting structure is a convex arc and a concave arc, or two concave arcs.

According to the heat preservation device of the preferred embodiment of the application, one or more of the upper hoop, the middle hoop and the lower hoop is/are a single-layer hoop, the single-layer hoops are stacked by one layer of arc-shaped combined sheets in a circumferential direction, a connecting step is respectively arranged at the corresponding position of the end parts of the two arc-shaped combined sheets stacked adjacently in the circumferential direction, and the two connecting steps are connected in a superposed manner.

Due to the adoption of the technical scheme, the utility model has the following advantages:

firstly, the application solves the processing difficulty of the surface splicing strip in the existing heat preservation cylinder, after the plane splicing strip is adopted,

the processing cost can be greatly saved;

secondly, the planar splicing strips are adopted, so that the materials are saved, the materials can be saved by 10% -30%, and the material cost is greatly reduced;

thirdly, the heat preservation device is manufactured by adopting a thin plate with proper thickness according to the design thickness, and the convex ribs can be omitted, so that the processing cost can be greatly saved.

Of course, it is not necessary for any one embodiment of the present disclosure to have all of the above described advantages.

Drawings

FIG. 1 is a schematic diagram of a frying open of a thermal insulation device of the present application;

FIG. 2 is a schematic cut-away view of the thermal insulation device of the present application;

FIG. 3 is a schematic cross-sectional view of a first mid-face tile of an embodiment;

FIG. 4 is a schematic cross-sectional view of a second mid-face tile of an embodiment;

FIG. 5 is a schematic cross-sectional view of a third mid-face tile of an embodiment;

FIG. 6 is a schematic cross-sectional view of an alternative embodiment of a face-piece;

FIG. 7 is a cross-sectional view of the upper hoop;

FIG. 8 is an enlarged schematic view of a portion of FIG. 7;

FIG. 9 is a cross-sectional view of the lower hoop;

FIG. 10 is an enlarged schematic view of a portion of FIG. 9;

FIG. 11 is a schematic view of a bead;

FIG. 12 is a schematic illustration of a middle ferrule;

FIG. 13 is an enlarged schematic view of a portion of FIG. 12;

FIG. 14 is a schematic view of an arcuate modular segment connection;

fig. 15 is a schematic top view of the thermal insulation device.

Detailed Description

For ease of understanding, the preferred embodiments of the present utility model are described in further detail below with reference to the accompanying drawings.

The core idea of the application is that a heat preservation device is manufactured, a middle-face splicing strip with a hexagonal cross section or a quadrangular cross section and one side being a straight line is stacked circumferentially, and the middle-face splicing strip is designed in a sectional manner, so that the middle-face splicing strip has a long appearance in terms of appearance; the heat preservation device, such as a heat preservation cylinder, can flexibly design the structure without remanufacturing a blank; the radian of the middle surface splicing strip of the heat-preserving cylinder in the prior art causes material waste, and the design of the straight plane solves the problem of difficulty in processing the middle surface splicing strip of the heat-preserving cylinder in the prior art, because the radian is processed on the inner surface and the outer surface of the original heat-preserving cylinder, the processing difficulty is high and time is consumed; after the planar strip is adopted, the cost can be effectively saved, the material and the processing time can be saved by 10% -30% without processing radian through calculation, and meanwhile, the batch production can be realized; according to the design thickness of the heat preservation device, such as a heat preservation cylinder, a thin plate with proper thickness is adopted, and protruding ribs can be omitted, so that the processing cost can be greatly saved, and the delivery period can be shortened. Carbon fiber composites are advantageous in applications requiring high temperatures and high chemical stability, and therefore, the application uses carbon fiber composites to design thermal insulation devices.

The present application is described in detail below with reference to the accompanying drawings. Referring to fig. 1 and 2, the heat preservation device of the present application, such as a heat preservation barrel in the drawings, is applied in a high temperature manufacturing process, and includes an upper hoop 10, n+1 middle face parts 20, N middle hoops 25 and a lower hoop 30, N is an integer greater than or equal to 0, the middle face parts 20 are circumferentially stacked by a plurality of middle face parts strips, the cross section of the middle face parts strips is hexagonal, or the cross section of the middle face parts strips is quadrilateral and one side is a straight line, the connection place of the two middle face parts strips includes a connection structure, the connection structure is a convex arc 28 and a concave arc 27, or two concave arcs 27, that is, two middle face parts strips which are close together, one side face is the convex arc 28 and the other side face is the concave arc 27, or two middle face parts strips which are close together are both concave arcs 27, and two concave arcs 27 are close together to form a connection hole, such as a bolt, and a bolt can be inserted into the connection hole, and the heat preservation device is provided; the diameters of the convex arc 28 and the concave arc 27 may be designed differently, for example, the diameter of the convex arc 28 is small and the diameter of the concave arc 27 is large, that is, the convex arc 28 and the concave arc 27 may be smoothly connected when two adjacent middle-face strips are connected in a deflected manner.

When N is 0, that is, when there is no middle hoop 25, the upper hoop 10, the middle section 20 and the lower hoop 30 are connected in sequence; the middle panel 20 includes a plurality of middle panel segments stacked circumferentially, with the upper ends of the middle panel segments being inserted into and connected with the upper hoops 10, and the lower ends of the middle panel segments being inserted into and connected with the lower hoops 30.

In this first embodiment, please refer to fig. 3, 4 and 5, the cross section of the middle face jigsaw is hexagonal, the middle face 20 further includes M first middle face jigsaw 21, R second middle face jigsaw 22, S third middle face jigsaw 23 and a plurality of connecting posts (not shown), M is an integer greater than 0, R is an integer greater than or equal to 0, S is an integer greater than or equal to 0, and the M first middle face jigsaw 21, R second middle face jigsaw 22 and S third middle face jigsaw 23 are connected to form the middle face 20 of the heat insulation device.

In the second embodiment of the present application, please refer to fig. 6, the cross section of the middle-face jigsaw is quadrilateral and one side is a straight line, in this embodiment of the present application, the straight line side is changed from the inner arc line in the prior art, the straight line is better processed than the arc line or may not be processed, for example, the straight line portion may not be processed by processing with a quadrilateral material with a proper size, for example, the middle-face jigsaw detached by the waste heat preservation device is processed and reused, the arc on one side is directly processed into the straight line, the processing of the arc line can be omitted once, and the processing man-hour can be saved; the outer arc line maintains an arc shape, and after the outer arc line is assembled into the heat preservation device, the whole effect of the appearance of the heat preservation device is good. The connection structure is shown as a concave-convex structure, mainly for illustration, and other structures, such as two concave or two convex structures, as shown in the above examples, are not shown here.

As shown in fig. 7 and 8, the upper hoop 10 is an annular hollow body, one side of the upper hoop 10 facing the middle face 20 is provided with an annular upper groove 12, and the upper end of the middle face splicing strip is inserted into and connected with the annular upper groove 12; as shown in fig. 9 and 10, the lower hoop 30 is an annular hollow body, one side of the lower hoop 30 facing the middle face 20 is provided with an annular lower groove 31, and the lower end of the middle face splicing strip is inserted into and connected with the annular lower groove 31.

In the third embodiment of the present application, the difference from the second embodiment is that the outer arc line is changed into a straight line based on fig. 6, so that the design is easier to process, and the outer view after the heat preservation device is assembled is changed into a planar connection.

As shown in fig. 3, 4, 5, 6 and 11, the middle face jigsaw bar is divided into a first middle face jigsaw bar 21, a second middle face jigsaw bar 22 and a third middle face jigsaw bar 23 according to the shapes of two sides of the cross section, wherein the two sides of the cross section of the first middle face jigsaw bar 21 are provided with concave arc shapes 27; one side of the second middle face spelling strip 22 is a concave arc 27, and the other side is a convex arc 28; the third medial facial tile 23 is flanked by convex arcs 28. The middle-face splicing strip faces to two ends of the upper hoop 10 and the lower hoop 30, an upper convex rib 211 and a lower convex rib 212 are respectively arranged, and the upper convex rib 211 and the lower convex rib 212 are respectively inserted into and connected with the annular upper groove 12 and the annular lower groove 31. In order to ensure that the convex and concave parts can be matched when the upper convex rib 211 and the lower convex rib 212 are put in, the widths of the upper convex rib 211 and the lower convex rib 212 matched with the corresponding hoops are designed to be 10-100mm.

The upper rib 211 and the lower rib 212 may be provided or not, for example, when the wall thickness of the heat insulating device (heat insulating cylinder) is 15 mm; however, when the wall thickness is less than 6mm, the middle face piece may have no bead, that is, the upper end face of the middle face piece is a plane, and the lower end face of the middle face piece is a plane, and both ends of the middle face piece are directly inserted into grooves of hoops connected up and down, because the grooves of the hoops do not affect the strength. In addition, the wall thickness of the middle face splicing strip is more than or equal to 1mm, namely the minimum is 1mm, and the maximum value is equal to the wall thickness of the heat preservation device (heat preservation cylinder); the wall thickness of the heat preservation device is the difference of the maximum outer diameter minus the minimum inner diameter of the heat preservation device, generally 5mm-30mm, and the height is determined according to actual requirements.

The M first middle face jigsaw strips 21, the R second middle face jigsaw strips 22 and the S third middle face jigsaw strips 23 are assembled between the upper hoop 10 and the lower hoop 30, the connecting columns are inserted into round holes formed by connecting concave arc-shaped strips 27 with inward concave sides, and the two ends of the connecting columns protrude out of the parts of the first middle face jigsaw strips 21 and the second middle face jigsaw strips 22, so that the upper hoop 10 and the lower hoop 30 are connected. It should be noted that, in this design, the shape of the convex arc 28 on the side of the jigsaw bar and the shape of the concave arc 27 on the side of the jigsaw bar are both arc-shaped, and the two jigsaw bars can be connected with the shape of the convex arc 28 on the side and the concave arc 27 on the side to form a continuous surface. The manner in which the middle panel segments are connected to form the middle panel 20 of the thermal insulation device is disclosed in other patents and will not be described in detail herein.

Preferably, in order to enhance the connection strength, bolt holes may be formed at positions corresponding to the upper and

lower hoops

10 and 30, and the bolt holes may be connected by bolts to firmly connect the upper and

lower hoops

10 and 30 together. The number of bolt holes can be determined by design, for example, at the place where every two middle face pieces are connected, but is not limited to the application, and the bolt holes are only used for strengthening the connection strength, and more or less, so long as the strength requirement can be met.

When N is at least one, at least one of the middle surface portion 20 and the middle hoop 25 is connected in sequence between the upper hoop 10, the middle surface portion 20, and the lower hoop 30, and when n=1, for example, the upper hoop 10, the middle surface portion 20, the middle hoop 25, the middle surface portion 20, and the lower hoop 30 are connected in sequence; when n=2, the upper hoop 10, the middle surface portion 20, the middle hoop 25, the middle surface portion 20, and the lower hoop 30 are connected in sequence, and so on; referring to fig. 12 and 13, the middle ring 25 includes two annular middle grooves 251; the middle ring 25 has the function of extending the length of the heat preservation device and increasing the strength of the heat preservation device.

The middle face segments (M first middle face segments 21, R second middle face segments 22, S third middle face segments 23) on both sides of the middle hoop 25 may be the same or different in size and length, as shown in fig. 2, and are not limited to this application. In order to enhance the connection strength, bolt holes may be formed in the middle ring 25, and the bolt holes of the two adjacent middle rings 25 may be connected by bolts, so that the two adjacent middle rings 25 may be firmly connected together. The number of bolt holes can be determined by design, for example, at the place where every two middle face pieces are connected, but is not limited to the application, and the bolt holes are only used for strengthening the connection strength, and more or less, so long as the strength requirement can be met.

Referring to fig. 14 and 15, one or more of the upper hoop 10, the middle hoop 25 and the lower hoop 30 is a single-layer hoop, the single-layer hoops are stacked by a layer of arc-shaped combination pieces 11 in a circumferential direction, a connection step is respectively provided at a corresponding position of the end parts of the two arc-shaped combination pieces stacked adjacently in a circumferential direction, and the two connection steps are connected in a superimposed manner, in this embodiment, as shown in fig. 1 and 2, the upper hoop 10, the middle hoop 25 and the lower hoop 30 are all single-layer hoops, but are not limited thereto. Considering the circumferential tensile strength of the upper hoop 10, when the wall thickness is generally less than 30mm, the connection screws 40 need to be distributed circumferentially, and the distribution cannot be distributed radially, for example, when the wall thickness is 15mm, the connection screws need to be distributed circumferentially by using M8, when the connection screws are used by using M8, the stacked circumferential tensile strength of 3 layers of 10mm is 20Mpa, and if the connection tensile strength of 30mm is increased to 50Mpa by using a single layer, the hoop circumferential tensile strength increases by more than a multiple. In addition, in consideration of processing time, the processing cost is high because of multiple processing of the processed surface caused by multi-layer superposition, and the processing cost is greatly reduced after single-layer superposition is adopted, for example, the grinding cost is saved by 70% when single-layer superposition with the height of 30mm is adopted compared with 3 layers and 10 mm. The hoops referred to herein are the

upper hoops

10, 25, 30.

the processing cost can be greatly saved;

The foregoing description of the preferred embodiments of the present utility model is provided for illustration only, and is not intended to be limiting, since various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the utility model.

Claims

1. The heat preservation device is applied to a high-temperature manufacturing process and is characterized by comprising an upper hoop, N+1 middle face parts, N middle hoops and a lower hoop, wherein N is an integer greater than or equal to 0; the middle face is stacked circumferentially by a plurality of middle face jigsaw bars, the place where two middle face jigsaw bars are connected comprises a connecting structure, the cross section of each middle face jigsaw bar is hexagonal, or the cross section of each middle face jigsaw bar is quadrilateral and one side of each middle face jigsaw bar is straight.

2. The insulating device of claim 1, wherein the mid-face panel comprises an upper rib and a lower rib.

3. The insulating device of claim 1, wherein the upper end surface of the middle panel is a planar surface and the lower end surface of the middle panel is a planar surface.

4. The insulating device of claim 1, wherein the wall thickness of the middle panel is 1mm or greater.

5. The thermal insulation device of claim 1, wherein the connecting structure is a convex arc and a concave arc, or two concave arcs.

6. The heat preservation device according to claim 1, wherein one or more of the upper hoop, the middle hoop and the lower hoop is a single-layer hoop, the single-layer hoops are stacked in a circumferential direction by a layer of arc-shaped combined sheets, a connecting step is respectively arranged at a corresponding position of the end parts of the two arc-shaped combined sheets stacked adjacently in the circumferential direction, and the two connecting steps are connected in a superposed manner.