CN211702416U

CN211702416U - Vacuum high-temperature heating wire mounting structure

Info

Publication number: CN211702416U
Application number: CN202020831036.5U
Authority: CN
Inventors: 朱惠钦; 张波
Original assignee: Haikang Chuangye Beijing Technology Co ltd
Current assignee: Haikang Chuangye Beijing Technology Co ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-10-16
Anticipated expiration: 2030-05-18

Abstract

The utility model discloses a vacuum high-temperature heating wire mounting structure, which comprises a plurality of heating units which are arranged in sequence, wherein each heating unit comprises a heat preservation layer, the heat preservation layers are arranged outside quartz glass tubes along with the shapes, and heating wires are arranged on the surfaces of the heat preservation layers, which are close to the quartz glass tubes; the heating wires on each heating unit are arranged in series. The utility model discloses a vacuum high temperature heating wire mounting structure can realize having improved heating unit's temperature rise efficiency to quartz glass pipe subregion heating, has reduced heating unit's replacement cost.

Description

Vacuum high-temperature heating wire mounting structure

Technical Field

The utility model relates to a high temperature equipment spare part technical field, in particular to vacuum high temperature heating wire mounting structure.

Background

The high-temperature sublimation purification of the OLED material needs to be 10^-3Pa～10^-5And Pa, placing the raw materials in a vacuumized quartz glass tube, heating at high temperature, and then realizing sublimation and gasification of the raw materials and deposition and separation of high polymer materials in different temperature areas.

In the prior art, the whole heating belt or heating wire is generally wound or coated outside the quartz glass tube, the quartz glass tube adopts integral heating, one end of the heating belt or heating wire is electrically heated, and the temperature rise needs a longer time. And when a position of the heating belt or the heating wire fails to heat, the whole heating belt or the heating wire needs to be replaced, the temperature rise efficiency and the replacement cost of the heating unit are high, and the requirement of zone heating of the quartz glass tube cannot be met.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a vacuum high temperature heating wire mounting structure can realize having improved heating unit's temperature rise efficiency to quartz glass pipe subregion heating, has reduced heating unit's replacement cost.

In order to achieve the above object, the utility model provides a following technical scheme:

a vacuum high-temperature heating wire installation structure comprises a plurality of heating units which are sequentially arranged, wherein each heating unit comprises a heat insulation layer, the heat insulation layers are arranged outside a quartz glass tube in a shape-following manner, and heating wires are arranged on the surfaces, close to the quartz glass tube, of the heat insulation layers; the heating wires on each heating unit are arranged in series.

Optionally, a placing groove is formed in the surface, close to the quartz glass tube, of the heat insulation layer, and the placing groove is a through groove extending along the length direction of the quartz glass tube; the heat preservation layer is made of elastic heat preservation materials.

Optionally, the insulating layer of each heating unit includes a first insulating sub-layer and a second insulating sub-layer, and the first insulating sub-layer and the second insulating sub-layer are spliced outside the quartz glass tube.

Optionally, the heater strip is the helical structure of spring form, it includes holding including holding to place the recess the chamber that holds of heater strip, it follows to hold the chamber the length direction of quartz glass pipe extends, the axial cross-section that holds the chamber is unanimous with the spring form the axial cross-section of heater strip.

Optionally, the placing groove further comprises an open cavity, the open cavity is a through cavity extending along the length direction of the quartz glass tube, and the open cavity is used for communicating the accommodating cavity with the placing position of the quartz glass tube.

Optionally, the width of the open cavity is smaller than the axial cross-sectional diameter of the receiving cavity.

Optionally, the placing grooves are uniformly distributed on the inner surface of the heat insulation layer.

Optionally, adjacent heating wires in the placing groove on the same heating unit are connected in series through connecting heating wires, and the connecting heating wires are in a linear structure.

Optionally, the heating unit includes a first heating unit, a second heating unit and a third heating unit which are arranged in sequence.

Optionally, the first and second insulating layers are connected together by a connecting structure.

According to the technical scheme, the vacuum high-temperature heating wire mounting structure of the utility model has the advantages that the heating part arranged outside the quartz glass tube is arranged into a plurality of heating units which are arranged in parallel, each heating unit is set with different heating temperatures according to needs, and the quartz glass tube is heated in a partition mode according to needs; the total length of the heating wires on each heating unit is short, and when the heating wires are electrically heated, the time for temperature rise is short, so that the temperature rise efficiency of the heating units is improved; when every independent heating element's heater strip breaks down, only need to be corresponding heating element's heater strip is changed can, other heating element's heater strip still can normally work, need not change, has reduced the replacement cost.

Drawings

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 described below, it is obvious that the drawings in the following description are only 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.

Fig. 1 is a schematic structural view of an end portion of a vacuum high-temperature heating wire installation structure provided by an embodiment of the present invention;

fig. 2 is a schematic view of a sectional structure of a vacuum high-temperature heating wire installation structure along a length direction according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of an insulating layer on a heating unit according to an embodiment of the present invention;

fig. 4 is a schematic view of a connection structure of a heating wire on a heating unit according to an embodiment of the present invention;

fig. 5 is an enlarged schematic view of a portion I in fig. 1.

Detailed Description

The utility model discloses a vacuum high temperature heating wire mounting structure can realize having improved heating unit's temperature rise efficiency to quartz glass tube subregion heating, has reduced heating unit's replacement cost.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 5, the utility model discloses a vacuum high-temperature heating wire installation structure, which comprises a plurality of heating units arranged in sequence, wherein each heating unit comprises a heat preservation layer 4, the heat preservation layer 4 is arranged outside a quartz glass tube 1 along with the shape, and a heating wire 3 is arranged on the surface of the heat preservation layer 4 close to the quartz glass tube 1; the heating wires 3 on each independent heating unit are arranged in series. The different heating units are connected in parallel, and the parallel connection is specific to the heating structure formed by the heating wires 3 on the heating units, that is, the heating structures on the different heating units are arranged in parallel. So that each heating unit is an independent heating unit.

The end part of the heating structure of each heating unit is connected with a voltage end, and the heating structure is heated by adopting 220V or 380V voltage, so that the heating wire 3 of each heating unit is independently heated and controlled.

The utility model discloses a vacuum high temperature heating wire mounting structure sets the heating part that will set up at 1 outside of quartz glass pipe to the parallelly connected setting of a plurality of heating element, every different heating temperature is set for as required to the heating element, has realized carrying out the subregion heating to quartz glass pipe as required. Every the total length of heater strip 3 on the heating element is shorter, and when electric heating, the temperature rise needs the time for a short time, has improved heating element's temperature rise efficiency. Every is independent when heating unit's heater strip 3 breaks down, only need be to corresponding heating unit's heater strip 3 change can, other heating unit's heater strip 3 still can normally work, need not change, has reduced the replacement cost.

In a specific embodiment, a placing groove 2 is arranged on the surface of the insulating layer 4 close to the quartz glass tube 1, and the placing groove 2 is a through groove extending along the length direction of the quartz glass tube 1. In order to conveniently place the heating wires 3, the heat-insulating layer 4 is made of elastic heat-insulating materials, and preferably, the heat-insulating layer 4 is made of asbestos heat-insulating layers. The heater strip 3 is embedded into in the asbestos heat preservation, can play heat retaining effect, reduce the loss of the energy, guarantee heating temperature, improved temperature rise efficiency and heating effect.

In order to make the heating temperature uniform, the placing grooves 2 are uniformly distributed on the inner surface of the heat insulation layer 4, the inner surface is the surface of the heat insulation layer 4 close to the quartz glass tube 1, and through the structure arrangement, the arrangement of the heating wires 3 arranged in the placing grooves 2 is uniform, and the uniformity degree of the heating temperature is improved.

In order to facilitate replacement and maintenance, the heat insulation layer 4 of each heating unit comprises a first heat insulation layer 41 and a second heat insulation layer 42, and the first heat insulation layer 41 and the second heat insulation layer 42 are spliced outside the quartz glass tube 1 to form a heat insulation structure following the shape of the quartz glass tube 1. The first and

second sub-insulation layers

41 and 42 are coupled together by a coupling structure. The connection structure may be provided on the outer surfaces of the first insulating layer 41 and the second insulating layer 42, or may be provided on the end surfaces of the first insulating layer 41 and the second insulating layer 42. Connection structure includes the connecting plate, the connecting plate passes through screw or other commonly used connecting pieces to be connected on first branch heat preservation 41 and second divide heat preservation 42, realizes first branch heat preservation 41 and second and divides heat preservation 42's connection location, connection structure is the connecting mode of connecting plate and connecting piece commonly used in this field, and the no longer repeated description here. When the heater strip 3 needs to be replaced, the first sub-insulating layer 41 and the second sub-insulating layer 42 which are connected together are separated, so that the heater strip 3 with the fault can be detected and replaced conveniently and quickly. Wherein, figure 1 is the utility model provides a structure schematic diagram of vacuum high temperature heating wire mounting structure's tip, for the convenience each partial structure of seeing clearly, first branch heat preservation 41 and second divide heat preservation 42 to have separated one section distance, and during the in-service use installation, first branch heat preservation 41 and second divide heat preservation 42 to piecing together and form cylinder heat preservation 4.

Wherein, the heating wire 3 is a spring-shaped spiral structure, and the heating efficiency is improved. Place recess 2 including holding chamber 21 that holds heater strip 3, hold chamber 21 and extend along quartz glass pipe 1's length direction, the axle cross-section that holds chamber 21 with helical structure's heater strip 3's axle cross-section is unanimous, realizes the location to heater strip 3.

Further, the placing groove 2 further comprises an open cavity 22, the open cavity 22 is a through cavity extending along the length direction of the quartz glass tube 1, and the open cavity 22 is used for communicating the placing positions of the accommodating cavity 21 and the quartz glass tube 1. Specifically, the width of the opening cavity 22 is smaller than the diameter of the section of the shaft of the accommodating cavity 21, so that the heating wire 3 in the accommodating cavity 21 is prevented from falling out, and the positioning effect of the heating wire 3 is improved.

In order to conveniently connect the heating wires 3 in the same heating unit, the adjacent heating wires 3 in the grooves 2 on the same heating unit are connected in series through connecting heating wires 5, and the connecting heating wires 5 are in a linear structure, so that the heating wires 3 at the bent positions are prevented from popping out from the grooves 2. The heating wires 3 in the same heating unit are connected in series in an S shape to form a heating structure, and are embedded into the asbestos heat-insulating layer, so that the distance between the heating wires 3 and the heated surface is uniform, and the temperature uniformity of the heating area is improved.

In a specific embodiment, as shown in fig. 2, the heating unit includes a first heating unit a, a second heating unit B, and a third heating unit C, which are sequentially disposed. The heating temperature of the first heating unit A and the third heating unit C is about 400 ℃, and the heating temperature of the second heating unit B is about 650 ℃.

The utility model discloses a vacuum high temperature heater strip mounting structure, heater strip 3 adopt "S" shape series connection 'S form, form heating unit' S heating structure, and heater strip 3 imbed in among the asbestos heat preservation, its with by the better laminating of heating surface. The utility model discloses a vacuum high temperature heater strip mounting structure does not confine to cylinder form or flat form, can follow the shape setting according to heating object surface, is applicable to tubular furnace and flat heating furnace. The heating wire mounting structure is divided into a plurality of heating units, namely, the heating units are arranged in a modularized mode and can respectively control and maintain different modules. The use of the heat preservation layer 4 can reduce energy consumption, and improve the heating temperature rise speed and the temperature uniformity of the heating area. The heating temperatures of different heating units can be independently set, so that obvious temperature interfaces are formed among different heating areas, impurities in the process can be further separated, and the purity of a final product is improved.

In the description of the present solution, it is to be understood that the terms "upper", "lower", "vertical", "inside", "outside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present solution.

Furthermore, the terms "first", "second" and "first" 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" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The vacuum high-temperature heating wire mounting structure is characterized by comprising a plurality of heating units which are sequentially arranged, wherein each heating unit comprises a heat-insulating layer (4), the heat-insulating layers (4) are arranged outside a quartz glass tube (1) along with the shape, and heating wires (3) are arranged on the surfaces, close to the quartz glass tube (1), of the heat-insulating layers (4); the heating wires (3) on each heating unit are arranged in series.

2. The vacuum high-temperature heating wire mounting structure as claimed in claim 1, wherein a placing groove (2) is formed in a surface of the insulating layer (4) close to the quartz glass tube (1), and the placing groove (2) is a through groove extending in a length direction of the quartz glass tube (1); the heat-insulating layer (4) is made of elastic heat-insulating materials.

3. The vacuum high-temperature heating wire mounting structure according to claim 1, wherein the insulating layer (4) of each heating unit includes a first sub-insulating layer (41) and a second sub-insulating layer (42), and the first sub-insulating layer (41) and the second sub-insulating layer (42) are spliced outside the quartz glass tube.

4. The vacuum high temperature heating wire mounting structure according to claim 2, wherein the heating wire (3) is a spring-like spiral structure, the placing groove (2) comprises an accommodating chamber (21) for accommodating the heating wire (3), the accommodating chamber (21) extends along the length direction of the quartz glass tube (1), and the axial cross-section of the accommodating chamber (21) is identical to the axial cross-section of the spring-like heating wire (3).

5. The vacuum high temperature heating wire mounting structure according to claim 4, wherein the placing groove (2) further comprises an open cavity (22), the open cavity (22) is a through cavity extending along the length direction of the quartz glass tube (1), and the open cavity (22) is used for communicating the accommodating cavity (21) with the placing position of the quartz glass tube (1).

6. The vacuum high temperature heating wire mounting structure according to claim 5, wherein the width of the opening chamber (22) is smaller than the axial sectional diameter of the accommodating chamber (21).

7. The vacuum high-temperature heating wire installation structure according to claim 2, wherein the placing grooves (2) are uniformly distributed on the inner surface of the insulation layer (4).

8. The vacuum high temperature heating wire installation structure according to claim 4, wherein the heating wires (3) in the adjacent placing grooves (2) on the same heating unit are connected in series through connecting heating wires (5), and the connecting heating wires (5) are in a linear structure.

9. The vacuum high temperature heating wire mounting structure according to claim 1, wherein the heating unit comprises a first heating unit (A), a second heating unit (B) and a third heating unit (C) which are sequentially arranged.

10. The vacuum high temperature heating wire installation structure according to claim 3, wherein the first sub-insulating layer (41) and the second sub-insulating layer (42) are connected together by a connection structure.