TWM547663U - Temperature measuring device - Google Patents

Description

Temperature measuring device

The invention relates to a detecting device, in particular to a temperature measuring device capable of withstanding high temperature.

Referring to FIG. 1 and FIG. 2, a temperature detecting device 1 (TW Patent No. I471540) applied to a high-temperature heating furnace has an insulating tube 11 extending along a long direction L1, and two are disposed on the insulating tube 11 Thermocouples 12, 13. The insulating tube 11 has two end faces 111, 112 opposite in the longitudinal direction L1, an outer peripheral surface 113 connected between the end faces 111, 112, and four holes 114, 115 extending from the end face 111 to the end face 112. And 116, 117, and a side opening 118 opened in the outer peripheral surface 113. The thermocouple 12 has a temperature measuring block 121 and two wires 122 connected to the temperature measuring block 121. The thermocouple 13 has a temperature measuring block 131 and two wires 132 connected to the temperature measuring block 131. The wires 122 of the thermocouple 12 are respectively disposed in the holes 114 and 115 to be insulated from each other, and the temperature measuring block 121 is located outside the end surface 111. The wires 132 of the thermocouple 13 are respectively disposed in the holes 116, 117 to be insulated from each other, and the temperature measuring block 131 is located in the side opening 118.

It can be seen from the above that the temperature detecting device 1 can detect the temperatures of two temperature measuring points at different heights in a heating furnace (not shown) by using the temperature measuring blocks 121 and 131 of the thermocouples 12 and 13. However, the heights of the temperature measuring blocks 121 and 131 are respectively limited by the length of the insulating tube 11 itself and the opening position of the side opening 118, so that the temperature detecting device 1 can only be applied to heating of a specific height. furnace. In addition, the temperature in the heating furnace changes drastically, and the wires 122 and 132 of the thermocouples 12 and 13 often break after being subjected to severe thermal expansion and contraction, and need to be replaced, but the original one must be managed before replacement. The wires 122, 132 are withdrawn from the holes 114, 115, 116, 117 having a substantial length to be replaced, making the replacement of the thermocouples 12, 13 quite inconvenient.

Therefore, one of the objects of the present invention is to provide a temperature measuring device that can easily adjust the temperature measuring position as needed and is easy to replace the thermocouple.

Therefore, the novel temperature measuring device comprises a ceramic rod, at least one thermocouple and a fixing unit.

The ceramic rod extends along a length direction and includes a first end surface, a second end surface opposite to the first end surface in the length direction, and a connection between the first end surface and the second end surface The outer peripheral surface is formed with a plurality of spaced apart mounting grooves, and each of the mounting grooves extends from the first end surface along the length direction to the second end surface.

The at least one thermocouple is disposed in the corresponding mounting slot, and the at least one thermocouple includes two conductive assemblies extending along the length direction, a temperature measuring block electrically connected to the conductive combining bodies, and a covering layer a coating layer of the conductive assembly, each conductive assembly having a metal wire, and an insulating layer coated on the metal wire and woven from a plurality of ceramic fibers, each metal wire having an output end, and A temperature measuring block opposite to the temperature measuring end of the output terminal is connected to the temperature measuring end of the metal wire.

The fixing unit is disposed on the ceramic rod and positions the at least one thermocouple on the ceramic rod.

Furthermore, another object of the present invention is to provide a ceramic rod having an open mounting groove.

Therefore, the novel ceramic rod is suitable for providing at least one thermocouple, the ceramic rod comprising a first end surface, a second end surface and an outer peripheral surface.

The second end surface is opposite to the first end surface in a length direction.

The outer peripheral surface is connected between the first end surface and the second end surface, and the outer peripheral surface is formed with a plurality of spaced apart mounting grooves, and each mounting groove extends from the first end surface along the length direction to the second end surface.

The utility model has the advantages that the outer peripheral surface of the ceramic rod is formed with the mounting grooves which are open along the length direction, so that the at least one thermocouple can be adjusted according to the requirements of different temperature measuring positions during installation. The position of a thermocouple's temperature measuring block on the ceramic rod can be applied to heating furnaces of different heights. In addition, since the mounting groove of the ceramic rod is open in the length direction, and the at least one thermocouple is positioned on the ceramic rod through the fixing unit, the fixing unit can be quickly removed after the fixing unit is removed. The ceramic rod takes out the at least one thermocouple to facilitate the replacement of the at least one thermocouple.

Referring to FIG. 3 and FIG. 4 , an embodiment of the temperature measuring device of the present invention comprises a ceramic rod 2 , two thermocouples 3 and a fixing unit 4 .

The ceramic rod 2 extends along a length direction L2 and includes a first end surface 21, a second end surface 22 opposite to the first end surface 21 in the length direction L2, and a first end surface 21 connected thereto. An outer peripheral surface 23 between the second end faces 22 is formed with five spaced apart mounting grooves 24, and each mounting groove 24 extends from the first end surface 21 along the length direction L2 to the second end surface 22 . In the present embodiment, the mounting grooves 24 are provided on the outer peripheral surface 23 at equal intervals in the circumferential direction, but are not limited thereto. Further, in other variations of the embodiment, the number of the mounting grooves 24 may be one to four or more.

Referring to Figures 3, 4, and 6, each thermocouple 3 is disposed in one of the corresponding mounting slots 24. In other variations of the embodiment, the number of the thermocouples 3 may also be one, three to five or more. It is to be noted that the upper limit of the number of the thermocouples 3 depends on the number of the mounting slots 24.

Referring to FIGS. 4, 5, and 6, each thermocouple 3 includes two conductive assemblies 31 extending along the length direction L2, a temperature measuring block 32 electrically connected to the conductive combining members 31, and a cover member. The cladding layer 33 of the conductive assembly 31 is equally. Each of the conductive assemblies 31 has a metal wire 34, and an insulating layer 35 coated on the metal wire 34 and woven from a plurality of ceramic fibers 351. Each of the metal wires 34 has an output end 341 and a temperature measuring end 342 opposite to the output end 341. The temperature measuring block 32 is connected to the temperature measuring end 342 of the metal wires 34. In this embodiment, the distance between the temperature measuring block 32 of one thermocouple 3 and the second end surface 22 is not equal to the distance between the temperature measuring block 32 of the other thermocouple 3 and the second end surface 22, The cladding layer 33 is made of a plurality of ceramic fibers 331, and the ceramic fibers 331 and the ceramic fibers 351 are made of alumina, but are not limited thereto.

The fixing unit 4 is disposed on the ceramic rod 2 and positions the thermocouples 3 on the ceramic rod 2. In the present embodiment, the fixing unit 4 includes three fixing wires 41 which are disposed at intervals in the longitudinal direction L2 on the outer circumferential surface 23 of the ceramic rod 2, and the fixing wires 41 tie the thermocouples 3 to the ceramic. On the rod 2, in practice, the embodiment of the fixing unit 4 is not limited thereto.

Through the above description, the advantages of the new model can be summarized as follows:

1. The mounting groove 24 of the present invention using the ceramic rod 2 has an open design along the longitudinal direction L2, and each of the thermocouples 3 can be adjusted according to the requirements of different temperature measuring positions in the heating furnace. Positioning the temperature measuring block 32 of a thermocouple 3 on the ceramic rod 2, and then positioning the thermocouples 3 on the ceramic rod 2 by the fixing unit 4, compared with the conventional temperature detecting device, The new type can be used in heating furnaces of different heights for good applicability.

2. The present invention uses the mounting groove 24 of the ceramic rod 2 to have an open design in the longitudinal direction L2, and the thermocouple 3 is attached to the ceramic rod 2 by the fixing wires 41 of the fixing unit 4. Therefore, the thermocouple 3 to be replaced can be quickly taken out from the mounting groove 24 of the ceramic rod 2 for replacement by simply cutting the fixing wire 41. Compared with the conventional temperature detecting device, the present invention can quickly complete the replacement. Wait for the replacement of thermocouple 3.

In summary, the novel temperature measuring device can not only adjust the position of the temperature measuring block 32 of the thermocouple 3 on the ceramic rod 2 as needed, but also can quickly replace the thermocouples 3, so it is possible to achieve this. The purpose of the new type.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

2‧‧‧Ceramic bars
21‧‧‧ first end face
22‧‧‧second end face
23‧‧‧ outer perimeter
24‧‧‧Installation slot
3‧‧‧ thermocouple
31‧‧‧Transitive assembly
32‧‧‧temperature block
33‧‧‧Cladding
331‧‧‧Ceramic fiber
34‧‧‧Metal wire
341‧‧‧output
342‧‧‧Temperature end
35‧‧‧Insulation
351‧‧‧Ceramic fiber
4‧‧‧Fixed unit
41‧‧‧fixed line
L2‧‧‧ length direction

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a schematic diagram of a conventional temperature detecting device; FIG. 2 is a line along line II-II of FIG. Figure 3 is an incomplete perspective exploded view of an embodiment of the novel temperature measuring device; Figure 4 is an incomplete planar combination diagram illustrating the number of fixed wires of the embodiment for attaching two thermocouples to one Fig. 5 is a partial enlarged view of Fig. 4; and Fig. 6 is a cross-sectional view taken along line VI-VI of Fig. 4.

2‧‧‧Ceramic bars

21‧‧‧ first end face

22‧‧‧second end face

23‧‧‧ outer perimeter

24‧‧‧Installation slot

3‧‧‧ thermocouple

31‧‧‧Transitive assembly

32‧‧‧temperature block

33‧‧‧Cladding

4‧‧‧Fixed unit

41‧‧‧fixed line

L2‧‧‧ length direction

Claims (9)

A temperature measuring device comprising: a ceramic rod extending along a length direction and comprising a first end surface, a second end surface opposite to the first end surface in the length direction, and a first end surface connected to the first end surface And an outer circumferential surface of the second end surface, the outer circumferential surface is formed with a plurality of spaced apart mounting grooves, each mounting groove extending from the first end surface along the length direction to the second end surface; at least one thermocouple is disposed on Corresponding mounting slot, the at least one thermocouple includes two conductive assemblies extending along the length direction, a temperature measuring block electrically connected to the conductive combining bodies, and a package wrapped around the conductive combined body a coating, each conductive assembly having a metal wire, and an insulating layer coated on the metal wire and woven from a plurality of ceramic fibers, each metal wire having an output end and a measurement opposite to the output end At the temperature end, the temperature measuring block is connected to the temperature measuring ends of the metal wires; and a fixing unit is disposed on the ceramic rod, and the at least one thermocouple is positioned on the ceramic rod. The temperature measuring device according to claim 1, comprising two thermocouples, each thermocouple being disposed in one of the corresponding mounting slots, wherein a distance between the temperature measuring block of one thermocouple and the second end surface is not equal to another The distance between the temperature measuring block of a thermocouple and the second end face. The temperature measuring device according to claim 1, wherein the coating layer of the at least one thermocouple is made of a plurality of ceramic fibers. The temperature measuring device according to claim 1, wherein the outer peripheral surface of the ceramic rod is formed with five mounting grooves spaced apart. The temperature measuring device according to claim 4, wherein the mounting grooves are provided at equal intervals in the circumferential direction on an outer circumferential surface of the ceramic rod. The temperature measuring device according to claim 1, wherein the fixing unit includes a plurality of fixing wires spaced apart from the outer circumferential surface of the ceramic rod in the longitudinal direction, the fixing wires tying the at least one thermocouple to the On the ceramic rod. A ceramic rod suitable for providing at least one thermocouple, the ceramic rod comprising: a first end surface; a second end surface opposite to the first end surface in a length direction; and an outer peripheral surface connected to the first end surface Between the second end surface, the outer peripheral surface is formed with a plurality of spaced apart mounting grooves, and each mounting groove extends from the first end surface along the length direction to the second end surface. The ceramic rod according to claim 7, wherein the outer peripheral surface is formed with five spaced apart mounting grooves. The ceramic rod according to claim 8, wherein the mounting grooves are provided at equal intervals in the circumferential direction on an outer circumferential surface of the ceramic rod.