Multidirectional visualization device of vacuum furnace

Abstract

The embodiment of the utility model relates to a multidirectional visualization device of a vacuum furnace, and belongs to the technical field of combustion monitoring. The embodiment of the utility model aims to solve the technical problem that a vacuum furnace in the prior art cannot observe the combustion process in sample sintering in multiple directions. The multidirectional visualization device of the vacuum furnace comprises a furnace body, a glass tube is arranged in the furnace body, the glass tube transversely penetrates through the furnace body, the two ends of the glass tube extend out of the furnace body, and first visual sealing pieces are detachably arranged at the two ends of the glass tube; a thermocouple wire is arranged in the glass tube, one end of the thermocouple wire is located in the glass tube, the other end of the thermocouple wire extends out of the glass tube and is connected with a temperature measuring module, and a powder compact is placed in the glass tube and is in contact connection with the thermocouple wire; and at least one second visible sealing element is also arranged on the glass tube in the longitudinal direction. According to the multidirectional visualization device provided by the embodiment of the invention, the combustion process in multiple directions such as the axial direction and the radial direction in the sample sintering process can be observed.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of combustion monitoring, and in particular to a multi-directional visualization device for a vacuum furnace. Background Art

[0002] A vacuum furnace is a furnace that uses a vacuum system (composed of carefully assembled components such as a vacuum pump, a vacuum measuring device, and a vacuum valve) to discharge some of the materials in the furnace chamber, making the pressure in the furnace chamber less than a standard atmospheric pressure, so that the space in the furnace chamber is in a vacuum state. A vacuum furnace is a device that heats in a vacuum environment. It is connected to a high vacuum pump system by a pipe in a furnace chamber sealed by a metal cover or a quartz glass cover. The vacuum degree of the furnace chamber can reach 133×(10 -2 ~10 -4 )Pa. The heating system in the furnace can be directly heated by a resistance furnace wire (such as a tungsten wire) or by high-frequency induction heating. The maximum temperature can reach about 3000°C. It is mainly used for ceramic sintering, vacuum smelting, electric vacuum parts degassing, annealing, brazing of metal parts, and ceramic-metal sealing. However, the vacuum furnace in the prior art cannot observe the combustion behavior of the sample in different directions during the sintering process in multiple directions and at the same time, nor can it complete the operation of measuring the temperature of multiple samples at the same time. Utility Model Content

[0003] In view of this, an embodiment of the present application provides a multi-directional visualization device for a vacuum furnace to solve the technical problem in the prior art that the vacuum furnace cannot observe the combustion process during sample sintering, and to achieve integrated visualization and temperature measurement operations for multiple samples from multiple directions.

[0004] The embodiment of the present application provides a multi-directional visualization device for a vacuum furnace, comprising a furnace body, wherein a glass tube is arranged in the furnace body, wherein the glass tube is arranged to penetrate the furnace body horizontally, and both ends of the glass tube extend to the outside of the furnace body, and both ends of the glass tube are detachably provided with a first visible seal; a thermocouple wire is arranged in the glass tube, wherein one end of the thermocouple wire is located in the glass tube, and the other end extends out of the glass tube and is connected to a temperature measurement module, wherein a powder compact is placed in the glass tube, and the powder compact is in contact with and connected to the thermocouple wire;

[0005] The glass tube is also provided with at least one second visible seal in the longitudinal direction.

[0006] In some embodiments that may include the above embodiments, the first visible seal and the second visible seal are both glass visible windows, and the first visible seal is fixed to the end of the glass tube through a flange assembly.

[0007] In some embodiments that may include the above embodiments, the flange assembly includes a first flange and a second flange, the first flange and the second flange are respectively located at two ends of the glass tube, the first flange is connected to a vacuum pump, and the second flange is connected to the temperature measurement module through the thermocouple wire.

[0008] In some embodiments, which may include the above embodiments, the powder compact is fixed in the glass tube by a fixing device.

[0009] In some embodiments that may include the above embodiments, the fixing device includes at least two refractory bricks, and the two refractory bricks are respectively arranged on the upper and lower sides of the powder compact.

[0010] In some embodiments that may include the above embodiments, a fixed pressing piece is further provided on the refractory brick located on the upper side of the powder compact, and the fixed pressing piece is an iron block.

[0011] In some embodiments that may include the above embodiments, the temperature measurement module is further connected to a data display screen, and the data display screen is used to record in real time the numerical changes in the temperature of the powder compact during the sintering process.

[0012] In some embodiments that may include the above embodiments, a plurality of high-definition cameras are disposed outside the furnace body, and the plurality of high-definition cameras are distributed around the furnace body.

[0013] In some embodiments, which may include the above embodiments, the thermocouple wire is a tungsten-rhenium thermocouple wire.

[0014] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0015] The embodiment of the present application uses a modified multi-directional visualization device to observe the combustion process in multiple directions such as axial and radial directions during the sample sintering process, achieve "full transparency" observation of the entire heat release process, and monitor the real-time temperature curve of the powder compact during the sintering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the multi-directional visualization device for a vacuum furnace according to an embodiment of the present application.

[0018] Description of reference numerals:

[0019] 1. Glass viewing window; 2. Vacuum pump; 3. Powder compact; 4. Fixing device; 5. Thermocouple wire; 6. Temperature measurement module; 7. Data display screen; 8. High-definition camera; 9. Glass tube. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0022] Secondly, it should be noted that in the description of the present application, terms such as "up", "down", "left", "right", "front", "back", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0023] The related art has the technical problem that the vacuum furnace in the prior art cannot observe the combustion process during the sintering of the sample.

[0024] In order to solve the above technical problems, an embodiment of the present application provides a multi-directional visualization device for a vacuum furnace, including a furnace body, in which a glass tube 9 is arranged, the glass tube 9 is arranged horizontally through the furnace body, and both ends of the glass tube 9 extend to the outside of the furnace body, and both ends of the glass tube 9 are detachably provided with a first visible seal; a thermocouple wire 5 is arranged in the glass tube 9, one end of the thermocouple wire 5 is located in the glass tube 9, and the other end extends out of the glass tube 9 and is connected to a temperature measuring module 6, a powder compact 3 is placed in the glass tube 9, and the powder compact 3 is in contact with the thermocouple wire 5, preferably, the thermocouple wire 5 is a tungsten-rhenium thermocouple wire; at least one second visible seal is also provided in the longitudinal direction of the glass tube 9.

[0025] In a specific embodiment, the first visible seal and the second visible seal are both glass visible windows 1 , and the first visible seal is fixed to the end of the glass tube 9 through a flange assembly.

[0026] Both sides and the upper and lower sides of the furnace body are converted into glass viewing windows 1, which can observe the combustion process in multiple directions such as axial and radial directions during the sintering process of the sample.

[0027] Specifically, the flange assembly includes a first flange and a second flange, which are respectively located at the two ends of the glass tube 9. The first flange is connected to a vacuum pump 2. The powder compact 3 is always in a vacuum state during the sintering process, which is completed by the vacuum pump 2. The vacuum pump 2 can ensure the vacuum degree in the furnace cavity during the sintering process; the second flange is connected to the temperature measurement module 6 through the thermocouple wire 5.

[0028] In a specific embodiment, the powder compact 3 is fixed in the glass tube 9 by a fixing device 4. Exemplarily, the fixing device 4 includes at least two refractory bricks, which are respectively arranged on the upper and lower sides of the powder compact 3, and the refractory bricks directly contact the powder compact and are placed on the upper and lower sides of the powder compact.

[0029] Furthermore, a fixed pressing piece is provided on the refractory brick located on the upper side of the powder compact 3 , and the fixed pressing piece is an iron block for pressing the powder compact 3 .

[0030] In a specific embodiment, the temperature measurement module 6 is further connected to a data display screen 7 , and the data display screen 7 is used to record the numerical changes of the temperature of the powder compact 3 during the sintering process in real time and display it on the data display screen 7 .

[0031] In a specific embodiment, a plurality of high-definition cameras 8 are arranged outside the furnace body, and the plurality of high-definition cameras 8 are distributed around the furnace body. For example, four high-definition cameras 8 are arranged. The combustion behavior of the powder compact 3 during the sintering process can be clearly observed through the high-definition cameras 8, thereby achieving "full transparent" observation of the entire heat release process.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-directional visualization device for a vacuum furnace, characterized in that: The invention comprises a furnace body, wherein a glass tube (9) is arranged in the furnace body, the glass tube (9) is arranged to penetrate the furnace body horizontally, and both ends of the glass tube (9) extend to the outside of the furnace body, and both ends of the glass tube (9) are detachably provided with a first visible seal; a thermocouple wire (5) is arranged in the glass tube (9), one end of the thermocouple wire (5) is located in the glass tube (9), and the other end extends out of the glass tube (9) and is connected to a temperature measurement module (6); a powder compact (3) is placed in the glass tube (9), and the powder compact (3) is in contact with and connected to the thermocouple wire (5); The glass tube (9) is also provided with at least one second visible seal in the longitudinal direction.

2. The multi-directional visualization device for a vacuum furnace according to claim 1, characterized in that: The first visible seal and the second visible seal are both glass visible windows (1), and the first visible seal is fixed to the end of the glass tube (9) via a flange assembly.

3. The multi-directional visualization device for a vacuum furnace according to claim 2, characterized in that: The flange assembly comprises a first flange and a second flange, wherein the first flange and the second flange are respectively located at two ends of the glass tube (9), the first flange is connected to a vacuum pump (2), and the second flange is connected to the temperature measurement module (6) via the thermocouple wire (5).

4. The multi-directional visualization device for a vacuum furnace according to claim 1, characterized in that: The powder compact (3) is fixed in the glass tube (9) by a fixing device (4).

5. The multi-directional visualization device for a vacuum furnace according to claim 4, characterized in that: The fixing device (4) comprises at least two refractory bricks, and the two refractory bricks are respectively arranged on the upper and lower sides of the powder compact (3).

6. The multi-directional visualization device for vacuum furnace according to claim 5, characterized in that: A fixed pressing piece is also arranged on the refractory brick located on the upper side of the powder compact (3), and the fixed pressing piece is an iron block.

7. The multi-directional visualization device for a vacuum furnace according to claim 1, characterized in that: The temperature measurement module (6) is also connected to a data display screen (7), and the data display screen (7) is used to record in real time the numerical changes in the temperature of the powder compact (3) during the sintering process.

8. The multi-directional visualization device for a vacuum furnace according to claim 1, characterized in that: A plurality of high-definition cameras (8) are arranged outside the furnace body, and the plurality of high-definition cameras (8) are distributed around the furnace body.

9. The multi-directional visualization device for a vacuum furnace according to claim 1, characterized in that: The thermocouple wire (5) is a tungsten-rhenium thermocouple wire.

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