CN109561523B - A high temperature heating device based on double combined reflector - Google Patents

Abstract

The invention discloses a high-temperature heating device based on double combined reflectors, which is used for improving the light focusing effect at a sample, and comprises a plurality of heating units, wherein each heating unit comprises a groove-shaped combined reflector and a heating lamp tube arranged in the groove-shaped combined reflector, the groove-shaped combined reflector comprises an elliptical arc reflector and two arc reflectors, the two arc reflectors respectively extend out from two ends of the elliptical arc reflector, and the heating lamp tube is positioned at the first focus of the elliptical arc reflector and at the circle centers of the two arc reflectors. The elliptical arc reflecting cover fully focuses the light rays emitted by the heating lamp tube positioned at the first focus onto the sample positioned at the second focus; secondly, reflecting the light rays with a smaller emission angle to the elliptical surface through the first focal point again by using the arc reflector, and finally still focusing the light rays on the sample; the whole arrangement of the heating unit is more compact by the structure of the reflecting cover, and the total depth of the reflecting cover is ensured not to be too shallow, so that the heating temperature of a sample is improved by condensing light.

Description

A high temperature heating device based on double combined reflector

technical field

The invention relates to the field of neutron scattering experiments, in particular to a high temperature heating device based on a double combined reflector.

Background technique

With the deepening of the research on the microstructure of materials, the neutron scattering method or the synchrotron radiation method has been more popularized and applied. Taking the neutron scattering method as an example, there has been mature practical experience in scattering experiments at room temperature and lower heating temperature. In order to more accurately understand the real-time changes of material properties at high temperatures, it becomes more and more urgent to design a high-temperature heating furnace. . According to the official websites of the four major hash neutron sources in the world and public information, in the high-temperature in-situ experiments of engineering samples, two methods of coil induction heating and infrared heating are usually used. The induction heating method is limited by the shape and size of the sample. Obviously, the infrared heating method has a wider application range.

The infrared heating method usually uses a halogen tungsten filament lamp as the light source. In order to improve the heating effect, a reflector is used to achieve light focusing at the sample. Some neutron scattering in-situ experimental heating furnaces cannot meet the requirements, and a higher temperature heating furnace needs to be designed.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a dual-based dual-layer system that achieves better light focusing and higher output intensity, meets the geometric requirements of the post-neutron scattering coverage angle of the sample, and realizes the overall compact arrangement of the heating furnace. High temperature heating device combined with reflector.

The object of the present invention adopts the following technical solutions to realize:

A high-temperature heating device based on a double-combination reflector is used to improve the light focusing effect at the sample. The high-temperature heating device based on the double-combination reflector includes a plurality of heating units. The heating lamp tube in the slot-shaped combined reflector, the slot-shaped combined reflector includes an elliptical arc reflector and two arc reflectors, the two arc reflectors are respectively from the two ends of the elliptical arc reflector extending out, the heating lamp tube is located at the first focus of the elliptical arc reflector, and is located at the center of the two arc reflectors; the heating unit is divided into two groups and symmetrically arranged on both sides of the sample , the tangent point connecting the sample and the arc reflector outside each group of heating units on the same side forms a neutron scattering coverage angle; the groove-shaped combined reflector also includes a plane exit, the plane exit The opening is located between the two circular arc reflectors and on the side close to the sample, and the sample is located at the second focal point of the elliptical arc reflector.

Further, the number of the heating units is an even number, and they are symmetrically arranged on both sides of the sample.

Further, the number of the heating units is 4 or 6.

Further, the intersection of the elliptical arc reflector and the arc reflector, the edge point of the arc reflector and the sample are located on a straight line.

Further, the depth of the elliptical arc reflector is consistent with the height of the position where the first focus is located, or is smaller than the height of the position where the first focus is located, or is greater than the height of the position where the first focus is located.

Further, the inner surfaces of the elliptical arc reflector and the circular arc reflector are gold-plated to improve the reflection efficiency.

Further, the outer surfaces of the elliptical arc reflector and the circular arc reflector are provided with a cooling channel system.

Compared with the prior art, the high temperature heating device based on the double combined reflector of the present invention has the following advantages:

1) The present invention adopts a groove-type reflector structure, and the cross-section is the combined shape of an elliptical arc and a circular arc. The elliptical arc reflector fully focuses the light emitted by the heating lamp tube located at the first focus to the sample located at the second focus. ; Secondly, the arc reflector reflects the light with a smaller emission angle to the elliptical surface again through the first focus, and finally focuses on the sample; The exit width of the entire reflector along the sample direction is narrowed. Under the condition of a certain coverage angle of neutron scattering after the sample, the volume of a single reflector becomes larger and the overall structure is more compact. At the same time, it is ensured that the total depth of the reflector is not too shallow. It is beneficial to concentrating light to increase the heating temperature of the sample.

2) Strictly calculate the geometric dimensions of the ellipse and the circle, so that the intersection point of the two, the edge point of the circle, and the center point of the sample are collinear, so that the number of emitted rays can be optimized, and the temperature of the reflector will not be too high.

3) The inner surface of the reflector is all designed with a gold-plated layer to improve the reflection efficiency.

4) The trough-shaped combined reflector proposed by the present invention is simulated by TracePro software, and it is shown that the luminous flux absorbed by the sample is increased by about 72% compared with the elliptical reflector.

Description of drawings

FIG. 1 is a perspective view of a high-temperature heating device based on a double combined reflector of the present invention;

FIG. 2 is a schematic structural diagram of the first embodiment of the high temperature heating device based on the double combined reflector of FIG. 1;

FIG. 3 is a schematic structural diagram of a second embodiment of the high temperature heating device based on the double combined reflector of FIG. 1;

FIG. 4 is a schematic structural diagram of a third embodiment of the high temperature heating device based on the double combined reflector of FIG. 1 .

In the figure: 10, heating unit; 11, heating lamp; 12, groove combination reflector; 120, elliptical arc reflector; 121, arc reflector; 122, plane exit; 123, intersection point; 124, edge point ; 20, neutron scattering coverage angle; 200, sample; 300, neutron detector.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a co-existence of an intervening component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a co-existing centered component. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to FIG. 1 to FIG. 4 , a high temperature heating device based on a double combined reflector of the present invention includes a plurality of heating units 10 .

Each heating unit 10 includes a heating lamp tube 11 and a groove-shaped combined reflector 12 . The heating lamp tube 11 is installed in the trough-shaped combined reflector 12 . The trough-shaped combined reflector 12 includes an elliptical arc reflector 120 , two circular arc reflectors 121 and a plane exit 122 . The two arc reflectors 121 extend from the ends of the elliptical arc reflectors 120 , and the plane exit 122 is located between the two arc reflectors 121 . An intersection 123 is formed between the elliptical arc reflector 120 and the circular arc reflector 121 . An edge point 124 is formed between the edge of the arc reflector 121 and the plane exit 122 . The heating lamp 11 is located at the first focus of the elliptical arc reflector 120 , and the sample 200 is located at the second focus of the elliptical arc reflector 120 . The heating lamp 11 is located at the center of the two arc reflectors 121 . The intersection point 123, the edge point 124 and the sample 200 are located on the same straight line, so that the quantity of emitted light can be optimized. The inner surfaces of the elliptical arc reflector 120 and the two circular arc reflectors 121 are gold-plated to improve the reflection efficiency. The outer walls of the elliptical arc reflector 120 and the two circular arc reflectors 121 are provided with cooling channel systems.

The number of heating units 10 is an even number. Preferably, the number of heating units 10 is 4 or 6. The heating units 10 are divided into two groups and are symmetrically distributed on both sides of the sample 200 , and the connecting line between the sample 200 and the outer tangent point of the arc reflector 121 forms the neutron scattering coverage angle 20 . Neutron detectors 300 are respectively provided on the left and right sides of the axial direction of the sample 200. From a physical point of view, there is a certain coverage angle requirement for the outgoing neutrons scattered by the sample 200, so the neutron scattering coverage angle 20 must be greater than the physical angle. The required coverage angle value.

In the first embodiment, the depth of the elliptical arc reflector 120 is consistent with the position of the first focus. In the second embodiment, the depth of the elliptical arc reflector 120 is slightly shorter than the position of the first focus. In the third embodiment, the depth of the elliptical arc reflector 120 is slightly longer than the position of the first focus.

The high temperature heating device based on the double combined reflector of the present invention has the following advantages:

1) The present invention adopts the structure of the groove-shaped combined reflector 12, and the cross section is the combined shape of an elliptical arc and a circular arc. The elliptical arc reflector 120 fully focuses the light emitted by the heating lamp tube 11 at the first focus to the second focus. On the sample 200 at the location; secondly, the arc reflector 121 reflects the light with a smaller emission angle to the elliptical surface again through the first focus, and finally focuses on the sample 200; and the elliptical arc reflector that is now commonly used in the field of neutron scattering In contrast, this combined shape narrows the exit width of the entire reflector along the sample direction. Under the condition of a certain coverage angle of neutron scattering behind the sample 200, the volume of a single reflector 12 becomes larger and the overall structure is more compact, while ensuring reflection The overall depth of the cover 12 is not too shallow, which is more conducive to concentrating light and increasing the heating temperature of the sample 200 .

2) Strictly calculate the geometric dimensions of the ellipse and the circle, so that the intersection point 123 of the two, the edge point 124 of the circle, and the three points of the center point of the sample 200 are collinear, so that the quantity of emitted light can be optimized without causing the temperature of the reflector. too high.

3) The inner surface of the groove-shaped combined reflector 12 is all designed with a gold-plated layer to improve the reflection efficiency.

4) The trough-shaped combined reflector 12 proposed by the present invention is simulated by TracePro software, and it is shown that the luminous flux absorbed by the sample is increased by about 72% compared with the elliptical reflector.

For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims (7)

1. The utility model provides a high temperature heating device based on two combination bowl for promote sample department light focus effect, its characterized in that: the high-temperature heating device based on the double combined reflectors comprises a plurality of heating units, each heating unit comprises a groove-shaped combined reflector and a heating lamp tube arranged in the groove-shaped combined reflector, the groove-shaped combined reflector comprises an elliptical arc reflector and two arc reflectors, the two arc reflectors respectively extend out of two ends of the elliptical arc reflector, the heating lamp tube is positioned at a first focus of the elliptical arc reflector and positioned at the circle centers of the two arc reflectors, the heating units are divided into two groups which are symmetrically arranged at two sides of a sample, and a neutron scattering coverage angle is formed by tangent point connecting lines of the sample and the arc reflectors positioned at the outer sides of each group of heating units at the same side of the sample; the groove type combined reflecting cover further comprises a plane emergent port, the plane emergent port is located between the two arc reflecting covers and located close to one side of the sample, and the sample is located at the second focus of the elliptical arc reflecting cover.

2. The high-temperature heating apparatus based on the double combined reflector according to claim 1, wherein: the number of the heating units is even, and the heating units are symmetrically arranged on two sides of the sample.

3. The high-temperature heating apparatus based on the double combined reflector according to claim 2, wherein: the number of the heating units is 4 or 6.

4. The high-temperature heating apparatus based on the double combined reflector according to claim 1, wherein: and the intersection point of the elliptic arc reflector and the circular arc reflector, the edge point of the circular arc reflector and the sample are positioned on a straight line.

5. The high-temperature heating apparatus based on the double combined reflector according to claim 1, wherein: the depth of the elliptical arc reflector is consistent with the height of the position of the first focus, or is smaller than the height of the position of the first focus or larger than the height of the position of the first focus.

6. The high-temperature heating apparatus based on the double combined reflector according to claim 1, wherein: the inner surfaces of the elliptical arc reflecting cover and the arc reflecting cover are plated with gold layers to improve the reflecting efficiency.

7. The high-temperature heating apparatus based on the double combined reflector according to claim 1, wherein: and cooling channel systems are arranged on the outer surfaces of the elliptical arc reflecting cover and the circular arc reflecting cover.

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