Nine-point temperature measuring device of single-chamber sintering furnace

Abstract

The utility model relates to the technical field of temperature measurement, and discloses a nine-point temperature measuring device of a single-chamber sintering furnace, which comprises a temperature sensing frame, the temperature sensing frame is used for being placed in a sintering furnace body, three temperature measuring components are arranged on the temperature sensing frame, and each temperature measuring component is provided with three thermocouples to form nine-point temperature measurement. The thermocouple is connected with a wire connector through a metal shielding wire, the wire connector is provided with a flange plate, the flange plate is arranged on the outer side of the sintering furnace body, the flange plate is fixed through sealing screws, and nine through holes are formed in the flange plate and used for installing the wire connector; the wire connector is connected with a temperature displayer through a wire. According to the nine-point type temperature measuring assembly, the temperature on the corresponding nodes can be measured for statistics, the temperature in the sintering furnace body is tested, and if the temperature measuring result is that the front area, the middle area and the rear area are uniform and consistent, the optimal sintering performance can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature measurement, and particularly relates to a 9-point temperature measurement device for a single-chamber sintering furnace. Background Technique

[0002] At present, sintered neodymium iron boron is mostly sintered by a single-chamber sintering furnace. The single-chamber vacuum sintering furnace for neodymium iron boron is a special equipment for preparing neodymium iron boron permanent magnet materials. The formed magnet is placed in the sintering furnace and sintered at a certain temperature, atmosphere and time. The sintering temperature will directly affect the product performance. Therefore, controlling the actual temperature of the sintering furnace is expected to achieve good heat transfer effect and high temperature uniformity, and ensure the quality stability of the material during the sintering process.

[0003] Chinese Patent with application number 201420359726.X discloses a temperature measurement device for a sintering furnace, including: a temperature display instrument, which is placed outside the furnace body of the sintering furnace during use; a temperature sensing frame, which has a central node and is placed inside the furnace body of the sintering furnace during use; an installation flange and a sealing screw with a thermocouple installation hole, the sealing screw is screwed on the installation flange, and the installation flange is fixed on the furnace wall of the sintering furnace; a thermocouple, which has a cold end and a hot end, the thermocouple passes through the thermocouple installation hole, the hot end of the thermocouple is connected to the central node, and the cold end of the thermocouple is connected to the temperature display instrument.

[0004] However, the existing temperature measurement points are distributed on a straight line, and only 3 points inside the furnace are measured for temperature, which cannot actually and accurately reflect the temperature situation inside the entire sintering furnace. Summary of the Invention

[0005] The purpose of the utility model is to provide a 9-point temperature measurement device for a single-chamber sintering furnace, which effectively solves the problem that the temperature measurement points are distributed on a straight line and cannot actually and accurately reflect the temperature situation inside the entire sintering furnace as proposed in the above background technique.

[0006] The technical solution adopted by the utility model is as follows: a 9-point temperature measurement device for a single-chamber sintering furnace, including a temperature sensing frame for being placed inside the sintering furnace body. There are 3 temperature measurement components on the temperature sensing frame, and each temperature measurement component has 3 thermocouples to form a 9-point temperature measurement. The thermocouples are connected to a connector through a metal shielded wire. There is a flange on the connector, and the flange is arranged outside the sintering furnace body. The flange is fixed with a sealing screw, and 9 through holes are opened on the flange for installing the connector; the connector is connected to a temperature display through a wire.

[0007] The beneficial effects of the present utility model are as follows: The 9-point temperature measurement component of this application can measure the temperature at the corresponding nodes for statistics and test the temperature inside the sintering furnace body. If the temperature measurement results in the front, middle, and rear three regions are uniform and consistent, the best sintering performance can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a front view structural schematic diagram of this application.

[0009] Figure 2 It is a three-dimensional structural schematic diagram of this application.

[0010] Figure 3 It is a three-dimensional structural schematic diagram of the temperature sensing frame in Embodiment 1.

[0011] Figure 4 It is a three-dimensional structural schematic diagram of the temperature measurement component.

[0012] Figure 5 It is a front view sectional structural schematic diagram of the temperature measurement component.

[0013] Figure 6 It is a three-dimensional structural schematic diagram of the pipe body.

[0014] Figure 7 It is a three-dimensional structural schematic diagram of the heat insulation strip.

[0015] Figure 8 It is a three-dimensional structural schematic diagram of the plug board.

[0016] Figure 9 It is a front view structural schematic diagram of the wire clamp.

[0017] Figure 10 It is a three-dimensional structural schematic diagram of the temperature sensing frame in Embodiment 2.

[0018] Figure 11 It is a three-dimensional structural schematic diagram of the slideway.

[0019] Figure 12 It is a top view structural schematic diagram of the slider.

[0020] In the figure: 1, temperature-sensing frame; 2, sintering furnace body; 3, temperature-measuring assembly; 4, thermocouple; 5, metal shielding wire; 6, connector; 7, flange; 8, sealing screw; 9, through hole; 10, wire; 11, temperature display; 12, cross bar; 13, longitudinal bar; 14, vertical bar; 15, pipe body; 16, light hole; 17, positioning nut; 18, wire clamp; 19, heat-insulating strip; 20, heat-insulating sheet; 21, line clearance; 22, end cover; 23, rectangular groove; 24, slot; 25, plug board; 26, straight bar; 27, U-shaped seat; 28, cross beam; 29, longitudinal beam; 30, vertical beam; 31, rounded-corner groove; 32, first bolt; 33, second bolt; 34, slide way; 35, slider; 36, first C-shaped seat; 37, third bolt; 38, second C-shaped seat. Detailed implementation manners

[0021] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below in conjunction with the accompanying drawings. The following description is only used to illustrate the technical solution of the present utility model and not to limit it.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model; in addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0023] Such as Figure 1 And Figure 2As shown in the figure, in the first embodiment, a 9-point temperature measuring device for a single-chamber sintering furnace includes a temperature sensing frame 1 for being placed inside a sintering furnace body 2. A temperature measuring component 3 is installed on the temperature sensing frame 1. The number of the temperature measuring components 3 is 3, and each temperature measuring component 3 has 3 thermocouples 4, forming a 9-point temperature measurement. The thermocouples 4 are connected to a connector 6 through a metal shielded wire 5. A flange 7 is connected to the connector 6. The flange 7 is installed on the outside of the sintering furnace body 2 and fixed by a sealing screw 8. Nine through holes 9 are provided on the flange 7 for installing the connector 6. The connector 6 is connected to a temperature display 11 through a wire 10. After the sintering furnace body 2 is heated, the 9-point temperature measuring component 3 of the present application can measure the temperature at the corresponding nodes for statistics and test the temperature inside the sintering furnace body 2. If the temperature measurement results in the front, middle, and rear three regions are uniform, the best sintering performance can be ensured.

[0024] As an optimization of the first embodiment, the material of the temperature sensing frame 1 is 304 stainless steel. 304 stainless steel has high strength and hardness, can withstand large pressure and impact force, has good high-temperature resistance, can work for a long time in a high-temperature environment without deformation or damage, and has a long service life.

[0025] As Figure 3 As shown in the figure, as an optimization of the first embodiment, the temperature sensing frame 1 includes cross bars 12, longitudinal bars 13, and vertical bars 14. The number of the cross bars 12 is 6, and 2 cross bars 12 are in a group and symmetrically arranged up and down. The number of the longitudinal bars 13 is 4, and the 4 longitudinal bars 13 are arranged in a matrix. The longitudinal bars 13 are connected to the cross bars 12, that is, 3 cross bars 12 are connected between every 2 longitudinal bars 13. The number of the vertical bars 14 is 9, and 3 vertical bars 14 are in a group, and 2 of the vertical bars 14 are symmetrically arranged left and right. These 2 vertical bars 14 are connected to the longitudinal bars 13, and the other 1 vertical bar 14 is connected to the cross bars 12. The cross bars 12, longitudinal bars 13, and vertical bars 14 form a frame structure, and the connection method is fixed by welding.

[0026] As Figures 4 - 8As shown in the figure, as an optimization of the first embodiment, considering that the thermocouple 4 penetrates deep into the sintering furnace body 2 for temperature measurement and the high-temperature resistance of the metal shielded wire 5 is limited. Generally, the high-temperature resistance temperature of the metal shielded wire 5 is 105 °C. To ensure the temperature measurement accuracy and service life, the temperature measurement assembly 3 includes a pipe body 15. The shape of the pipe body 15 is a square pipe. The side wall of the pipe body 15 is connected to the vertical rod 14 and fixed by welding. The pipe body 15 in the middle is parallel to the longitudinal rod 13, and the pipe bodies 15 on both sides are arranged obliquely. In this embodiment, the pipe body 15 on the left gradually rises from the inlet of the sintering furnace body 2 to the inside, and the pipe body 15 on the right gradually descends from the inlet of the sintering furnace body 2 to the inside; three light holes 16 are opened on the pipe body 15, and the thermocouple 4 is fixed on the light hole 16 through a positioning nut 17. The temperature measurement end of the thermocouple 4 is located outside the pipe body 15, the metal shielded wire 5 is located inside the pipe body 15, and a wire clip 18 for fixing the metal shielded wire 5 is connected inside the pipe body 15; a heat insulation strip 19 is installed inside the pipe body 15. The shape of the heat insulation strip 19 is U-shaped, and the material of the heat insulation strip 19 is carbon felt; a heat insulation sheet 20 is installed in the notch of the heat insulation strip 19. The number of the heat insulation sheets 20 is 2. The material of the heat insulation sheets 20 is ceramic. There is a line gap 21 between the two heat insulation sheets 20. The wire clip 18 is installed in the line gap 21, and the metal shielded wire 5 is located in the line gap 21; end caps 22 are connected to both ends of the pipe body 15, and the metal shielded wire 5 passes through the end cap 22; a rectangular groove 23 is provided on the side wall of the pipe body 15, and the position of the rectangular groove 23 corresponds to that of the light hole 16, which is convenient for the disassembly and assembly of the thermocouple 4; a slot 24 is connected to the pipe body 15, and a plug board 25 is connected to the slot 24. The plug board 25 is used to block the rectangular groove 23; by setting the temperature measurement assembly 3, the temperature can be measured at 9 temperature measurement points including the front lower left, front middle, front upper right, middle left, middle middle, middle right, rear upper left, rear middle, and rear lower right, and the test results are more representative.

[0027] As Figure 9 shown, as an optimization of the first embodiment, the wire clip 18 includes a straight rod 26. The straight rod 26 is connected to the inner top surface of the pipe body 15. Three U-shaped seats 27 are connected to the side wall of the straight rod 26. The openings of the U-shaped seats 27 are in a constricted shape. The notches of the U-shaped seats 27 are used to clamp the metal shielded wire 5. By setting the wire clip 18, the arrangement of the metal shielded wire 5 is tidy.

[0028] As Figure 10As shown, in the second embodiment, which is different from the first embodiment, considering the welded forming of the above-mentioned temperature-sensitive frame 1, the installation position of the pipe body 15 is fixed. The temperature-sensitive frame 1 includes a cross beam 28, a longitudinal beam 29, and a vertical beam 30. The cross beam 28 is U-shaped, and rounded slots 31 are arranged at equal intervals on the horizontal section of the cross beam 28; the number of cross beams 28 is 6, with 2 cross beams 28 as a group and arranged symmetrically up and down; the cross-sectional shape of the longitudinal beam 29 is L-shaped, and rounded slots 31 are arranged at equal intervals on both the horizontal section and the vertical section of the longitudinal beam 29; the number of longitudinal beams 29 is 4, and the 4 longitudinal beams 29 are arranged in a matrix. The longitudinal beam 29 is connected to the cross beam 28 by a first bolt 32, that is, 3 cross beams 28 are connected between every 2 longitudinal beams 29; the vertical beam 30 is rod-shaped, and the number of vertical beams 30 is 9, with 3 vertical beams 30 as a group, and 2 of the vertical beams 30 are arranged symmetrically left and right. These 2 vertical beams 30 are connected to the longitudinal beam 29 by a second bolt 33, and the other 1 vertical beam 30 is connected to the cross beam 28 by a second bolt 33. The cross beam 28, the longitudinal beam 29, and the vertical beam 30 form a frame structure, and the detachable connection method facilitates the position adjustment of the vertical beam 30, making the installation position of the pipe body 15 adjustable.

[0029] As Figure 11 and Figure 12 As shown, in the third embodiment, which is different from the first and second embodiments, considering that the position of the above-mentioned pipe body 15 is fixed and non-adjustable, a slideway 34 is connected to the side wall of the pipe body 15. The cross-sectional shape of the slideway 34 is U-shaped, and a slider 35 is slidably connected to the slideway 34. The slider 35 is a T-shaped rotating part, and a first C-shaped seat 36 is connected to the small diameter section of the slider 35. A second C-shaped seat 38 is connected to the first C-shaped seat 36 by a third bolt 37. The second C-shaped seat 38 and the first C-shaped seat 36 are fixed on the vertical rod 14, or the second C-shaped seat 38 and the first C-shaped seat 36 are fixed on the vertical beam 30. By setting the second C-shaped seat 38 and the first C-shaped seat 36, the inclination angle of the pipe body 15 can be adjusted, and the applicability is stronger.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still make modifications and improvements to the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A 9-point temperature measuring device for a single-chamber sintering furnace, comprising a temperature sensing frame (1), characterized in that: The temperature-sensing frame (1) is used to be placed inside the sintering furnace body (2). A temperature-measuring component (3) is provided on the temperature-sensing frame (1). The number of the temperature-measuring components (3) is 3. Each temperature-measuring component (3) has 3 thermocouples (4), forming a 9-point temperature measurement. The thermocouple (4) is connected with a connector (6) through a metal shield wire (5). A flange plate (7) is provided on the connector (6). The flange plate (7) is arranged outside the sintering furnace body (2). The flange plate (7) is fixed by a sealing screw (8). Nine through holes (9) are formed on the flange plate (7). The through holes (9) are used to install the connector (6). The connector (6) is connected with a temperature display (11) through a wire (10).

2. The 9-point temperature measuring device for a single-chamber sintering furnace according to claim 1, characterized in that: The material of the temperature-sensing frame (1) is 304 stainless steel.

3. The 9-point temperature measuring device for a single-chamber sintering furnace according to claim 1, characterized in that: The temperature-sensing frame (1) includes cross bars (12), longitudinal bars (13), and vertical bars (14). The number of the cross bars (12) is 6. Two cross bars (12) form a group and are symmetrically arranged up and down. The number of the longitudinal bars (13) is 4. The 4 longitudinal bars (13) are arranged in a matrix. The longitudinal bars (13) are connected with the cross bars (12), that is, 3 cross bars (12) are connected between every two longitudinal bars (13). The number of the vertical bars (14) is 9. Three vertical bars (14) form a group. Two of the vertical bars (14) are symmetrically arranged left and right. These two vertical bars (14) are connected with the longitudinal bars (13). The other vertical bar (14) is connected with the cross bar (12).

4. The 9-point temperature measuring device for a single-chamber sintering furnace according to claim 3, characterized in that: The temperature-measuring component (3) includes a pipe body (15). The shape of the pipe body (15) is a square pipe. The side wall of the pipe body (15) is connected with the vertical bar (14). The pipe body (15) in the middle is parallel to the longitudinal bar (13). The pipe bodies (15) on both sides are arranged obliquely. Three light holes (16) are formed on the pipe body (15). The thermocouple (4) is fixed on the light hole (16) through a positioning nut (17). The temperature-measuring end of the thermocouple (4) is located outside the pipe body (15). The metal shield wire (5) is located inside the pipe body (15). A wire clip (18) for fixing the metal shield wire (5) is connected inside the pipe body (15). End caps (22) are provided at both ends of the pipe body (15). The metal shield wire (5) passes through the end cap (22). A rectangular groove (23) is formed on the side wall of the pipe body (15). The position of the rectangular groove (23) corresponds to that of the light hole (16). A slot (24) is connected to the pipe body (15). An insertion plate (25) is connected to the slot (24). The insertion plate (25) is used to block the rectangular groove (23).

5. The 9-point temperature measuring device for a single-chamber sintering furnace according to claim 4, characterized in that: The pipe body (15) on the left side gradually rises from the inlet of the sintering furnace body (2) to the inside. The pipe body (15) on the right side gradually descends from the inlet of the sintering furnace body (2) to the inside.

6. The 9-point temperature measuring device of a single-chamber sintering furnace according to claim 4, characterized in that: An insulating strip (19) is arranged inside the pipe body (15). The shape of the insulating strip (19) is U-shaped. The material of the insulating strip (19) is carbon felt.

7. The 9-point temperature measuring device for a single-chamber sintering furnace according to claim 6, characterized in that: An insulating sheet (20) is arranged in the notch of the insulating strip (19). The number of the insulating sheets (20) is 2. The material of the insulating sheet (20) is ceramic. A circuit gap (21) is formed between the two insulating sheets (20). The wire clip (18) is installed in the circuit gap (21), and the metal shield wire (5) is located in the circuit gap (21).

8. The 9-point temperature measuring device of a single-chamber sintering furnace according to claim 4, characterized in that: The wire clamp (18) includes a straight rod (26). The straight rod (26) is connected to the inner top surface of the pipe body (15). A U-shaped seat (27) is provided on the side wall of the straight rod (26). The number of U-shaped seats (27) is 3. The opening of the U-shaped seat (27) is constricted. The notch of the U-shaped seat (27) is used to clip the metal shield wire (5).

9. The 9-point temperature measuring device of a single-chamber sintering furnace according to claim 1, characterized in that: The temperature-sensing frame (1) includes a cross beam (28), longitudinal beams (29), and vertical beams (30). The cross beam (28) is U-shaped. Rounded slots (31) arranged at equal intervals are provided on the horizontal section of the cross beam (28). The number of cross beams (28) is 6. Two cross beams (28) form a group and are symmetrically arranged up and down. The cross-sectional shape of the longitudinal beam (29) is L-shaped. Rounded slots (31) arranged at equal intervals are provided on both the horizontal section and the vertical section of the longitudinal beam (29). The number of longitudinal beams (29) is 4. The 4 longitudinal beams (29) are arranged in a matrix. The longitudinal beams (29) are connected to the cross beam (28) by first bolts (32), that is, 3 cross beams (28) are connected between every two longitudinal beams (29). The vertical beam (30) is rod-shaped. The number of vertical beams (30) is 9. Three vertical beams (30) form a group. Among them, two vertical beams (30) are symmetrically arranged left and right. These two vertical beams (30) are connected to the longitudinal beam (29) by second bolts (33). The other one vertical beam (30) is connected to the cross beam (28) by second bolts (33).

10. The 9-point temperature measuring device of a single-chamber sintering furnace according to claim 4, characterized in that: A slideway (34) is provided on the side wall of the pipe body (15). The cross-sectional shape of the slideway (34) is U-shaped. A slider (35) is slidably connected to the slideway (34). The slider (35) is a T-shaped rotating part. A first C-shaped seat (36) is provided on the small diameter section of the slider (35). A second C-shaped seat (38) is connected to the first C-shaped seat (36) by a third bolt (37). The second C-shaped seat (38) and the first C-shaped seat (36) are fixed on the vertical rod (14).

Images