TWI664403B - Temperature measuring device - Google Patents

Abstract

A temperature measuring device is suitable for being installed in a heating device. The temperature measuring device includes a pipe unit, at least two insulation members, and a thermocouple unit. The pipe unit includes an isolation pipe. Each insulating member is woven from a fiber material and defines an insulating space, and has a fixed portion fixed to the isolation tube, and a free portion opposite to the fixed portion. The fixed portion and the free portion have a majority respectively. Porosity. The thermocouple unit includes at least one thermocouple passing through the isolating tube, the at least one thermocouple having two wires passing through the isolating tube, and each wire penetrates a corresponding one through an aperture of a free portion of an individual insulation member. Insulation space, so that these wires are in the corresponding insulation space and insulated from each other. With the at least two insulating members woven from a fiber material, the wires can be thermally expanded, contracted and deformed in the corresponding insulation space without being exposed under any flexure, thereby improving the insulation effect.

Description

Temperature measuring device

The invention relates to a measuring device, in particular to a temperature measuring device.

Referring to FIG. 1, a conventional temperature measuring device 1 is suitable for being installed in a heating device (not shown). The conventional temperature measuring device 1 includes an isolation tube 11, a thermocouple 12 and a protection tube 13.

The isolation tube 11 includes a first section 111 penetrating into the heating device (not shown), a second section 112 perpendicular to the first section 111, and two mounting holes 113 in the first section.

Each thermocouple 12 passes through the isolation tube 11 and includes two wires 121 and a sensing portion 122 for measuring temperature at the ends of the wires 121. Each wire 121 passes through each mounting hole 113. .

The protection tube 13 defines a receiving chamber 131 for the isolation tube 11 to pass through.

Due to the extremely large temperature difference in the heating device (not shown), the wires 121 are subject to thermal expansion and contraction, so that some of the wires 121 are bent and entangled in the corresponding mounting holes 113. In addition, the first The junction of the first section 111 and the second section 112 will also be deformed due to thermal expansion and contraction, which causes the two wires 121 to be electrically connected to cause a short circuit.

It is worth noting that, as disclosed in the Republic of China Patent No. M432829, a braided thermocouple wire provides a solution. The temperature measuring device 1 also includes the isolation tube 11, the thermocouple 12, and the protection. Tube 13. The wires 121 passing through the isolation tube 11 are covered with a plurality of intervals of the insulating bundle ring 10, so that the wires 121 have a buffer space during thermal expansion, thereby reducing the short circuit of the wire. However, as shown in FIG. 2, in use, the insulating bundle rings 10 will still be pushed or stuck to each other due to the thermal expansion and contraction of the wires 121, so that the wires 121 are electrically connected, causing a short circuit. .

Therefore, an object of the present invention is to provide a temperature measuring device capable of improving the insulation effect.

Therefore, the temperature measuring device of the present invention is suitable for being installed in a heating device, and the temperature measuring device includes a pipe unit, at least two insulation members, and a thermocouple unit.

The pipe unit is mounted on the heating device and includes an isolation tube extending along a length direction. The isolation tube has a first end passing through the heating device and a second end opposite to the first end.

Each insulating member extends along the length direction, is woven from fiber material and defines an insulating space, and has a fixed portion fixed to the isolation tube, and a free portion opposite to the fixed portion. The fixed portion The portion and the free portion each have a plurality of pores formed between the fibrous materials.

The thermocouple unit includes at least one thermocouple that passes through the isolating tube and is used for measuring temperature. Each thermocouple has two wires passing through the isolating tube, and each wire is formed by a pore in a free portion of an individual insulating member. The corresponding insulation space is penetrated so that the wires are insulated from each other in the corresponding insulation space.

The effect of the invention lies in that: by using the fiber braided insulation members, the wires that pass through the insulation tube are completely covered, and can be expanded and contracted with the wires when the wires are arbitrarily flexible. The deformation keeps these wires from being exposed and improves the insulation effect.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.

Referring to FIG. 3, FIG. 4, and FIG. 5, a first embodiment of the temperature measuring device of the present invention is suitable for being installed in a heating device (not shown). The temperature measuring device includes a pipe unit 2, an insulating member 3, A thermocouple unit 4, a number of fixing members 5, and a number of adhesives 6.

The pipe unit 2 is installed in the heating device (not shown), and includes three isolation pipes 21 extending along a length direction L perpendicular to a floor, and a protection pipe 22.

Each isolation tube 21 has a first end 211 passing through the heating device (not shown), a second end 212 opposite to the first end 211, and four extending from the first end 211 in the length direction. L extends to the mounting hole 213 of the second end 212. In this embodiment, the material of the isolation tubes 21 is ceramic.

It is worth noting that in this embodiment, the number of the isolation pipes 21 is three. In other variations of this embodiment, the number of the isolation pipes 21 may also be one, two, or four or more.

The protection tube 22 defines a receiving chamber 221 through which the isolation tubes 21 pass. In this embodiment, the material of the protection tube 22 is one of silicon carbide and sapphire.

It is worth noting that, in this embodiment, the number of the mounting holes 213 is four. In other variations of this embodiment, the number of the mounting holes 213 may be an even number of two or six or more.

In this embodiment, the number of the insulation members 3 is twelve, and each insulation member 3 extends along the length direction L, is interwoven with fiber materials and defines an insulation space 30, and includes a fixed space for isolation. The fixed portion 31 of the tube 21 and a free portion 32 opposite to the fixed portion 31. The fixed portion 31 and the free portion 32 each have a plurality of voids 33 formed between the fiber materials. In this embodiment, the insulation members 3 are interwoven with high temperature resistant glass fibers.

It is worth noting that, in this embodiment, the number of the insulating members 3 is twelve. In other variations of this embodiment, the number of the insulating members 3 may be an even number other than twelve.

Referring to FIG. 3, FIG. 5, and FIG. 6, the thermocouple unit 4 includes six thermocouples 41 disposed on the isolation tubes 21, and every two thermocouples 41 pass through one of the isolation tubes 21. Each thermocouple 41 has two lead wires 411 passing through the corresponding isolation tube 21 and a sensing portion 412 electrically connected to one end of the lead wires 411 for measuring temperature.

Each wire 411 passes through the mounting hole 213 of the corresponding insulation tube 21 and passes through the free portion 32 of the individual insulation member 3 and the hole 33 adjacent to the corresponding second end 212 of the insulation tube 21 to penetrate the insulation member The insulation space 30 of 3 makes the wires 411 in the corresponding insulation space 30 and is insulated from each other.

It is worth noting that in this embodiment, the number of the thermocouples 41 is six. In other variations of this embodiment, the number of the thermocouples 41 may also be one, two, three, four, Five or more.

It is worth noting that the number of these wires 411 is even, so the number of matching mounting holes 213 is even, and the number of these wires 411 does not exceed the number of these mounting holes 213. Preferably, these wires The number of 411 is the same as the number of the mounting holes 213.

In this embodiment, the number of the fixing members 5 is three, and each fixing member 5 is disposed at an end of the corresponding isolation tube 21 near the second end 212 and bundles the fixing of the corresponding insulating members 3 The portion 31 fixes the insulation members 3 on the outer peripheral surface of the corresponding isolation tube 21 near the second end 212. In this embodiment, the fixing members 5 are a kind of bundling ring.

In this embodiment, the number of the adhesives is six, and each adhesive 6 is bonded to the sensing portion 412 of each thermocouple 41 and the corresponding isolation tube 21. In this embodiment, the adhesives 6 are ceramic adhesives.

In use, the insulation members 3 are soft materials made of interwoven fibers, so the insulation members 3 can be expanded and contracted with the wires 411 through the pores 33 of the insulation members 3 under any bending. And deformed in the insulation space 30, and because the insulation members 3 continuously surround the wires 411, thereby keeping the wires 411 in the insulation space 30 without being exposed, thereby achieving the effect of improving the insulation effect .

It is worth noting that the adhesive 6 adheres to the sensing portion 412 and the corresponding isolation tube 21, so that the elongation of the wires 411 due to the temperature increase unidirectionally extends in the direction of the insulating members 3, and is The insulation members 3 are completely covered, further improving the insulation effect. In addition, since the length direction L is perpendicular to the ground, the cases where the wires 411 contract due to temperature drop will be straightened due to the influence of gravity, and will not be curled and wound in the corresponding mounting holes 213.

Referring to FIG. 7 and FIG. 8, a second embodiment of the temperature measuring device of the present invention is substantially the same as the first embodiment, and the main difference from the first embodiment is that in the second embodiment, the pipe fitting The unit 2 includes an isolation tube 21, the number of the insulating members 3 is ten, the thermocouple unit 4 includes five thermocouples 41, and the number of the fixing members 5 is one.

The isolation tube 21 has ten mounting holes 213.

Each wire 411 of each thermocouple 41 passes through the mounting hole 213 of the 21 and penetrates into the corresponding insulating member 3.

The fixing member 5 is disposed at an end of the isolation pipe 21 near the second end 212, and binds the fixing portions 31 of the corresponding insulation members 3, so that the insulation members 3 are fixed near the corresponding insulation pipes 21. The outer peripheral surface of the second end 212.

Referring to FIG. 9, a third embodiment of the temperature measuring device of the present invention is substantially the same as the second embodiment, and the main difference from the second embodiment is that the isolation tube 21 of the third embodiment has only Five mounting holes 213.

Each thermocouple 41 is installed in a corresponding mounting hole 213, and also has two insulating layers 413 respectively covering a part of the length of the wires 411, so that the wires 411 of each thermocouple 41 are in corresponding mounting holes. 213 are insulated from each other, and the portions of the wires 411 exposed from the isolation tube 21 penetrate the corresponding insulation members 3.

Through the above description, the advantages of the foregoing embodiment can be summarized as follows: the insulation member 3 interwoven with the continuous fibers is deformed in the insulation space 30 as the wires 411 thermally expand and contract. And keep the wires 411 inside the insulation spaces 30 and be exposed outside the insulation spaces 30 due to thermal expansion, so as to achieve the effect of improving the insulation effect. And with the adhesive 6, the wires 411 are extended unidirectionally in the direction of the insulation members 3, and because the length direction L is perpendicular to the ground, the wires 411 will not be installed correspondingly. The holes 213 are curled and wound to further improve the insulation effect.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, any simple equivalent changes and modifications made according to the scope of the patent application and the contents of the patent specification of the present invention are still Within the scope of the invention patent.

2‧‧‧Pipe Fittings Unit

21‧‧‧Isolation tube

211‧‧‧ the first end

212‧‧‧Second End

213‧‧‧Mounting holes

22‧‧‧ protection tube

221‧‧‧Capacity Room

3‧‧‧ Insulation

30‧‧‧ Insulated Space

31‧‧‧Fixed section

32‧‧‧ Ministry of Freedom

33‧‧‧ Pore

4‧‧‧Thermocouple Unit

41‧‧‧Thermocouple

411‧‧‧Wire

412‧‧‧Sensor

413‧‧‧Insulation

5‧‧‧Fixed parts

6‧‧‧ Adhesive

L‧‧‧ length direction

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, wherein: FIG. 1 is a sectional view illustrating a conventional temperature measuring device; FIG. 2 is a sectional view illustrating the Republic of China The braided thermocouple wire disclosed in Patent No. M432829 is installed in the conventional temperature measuring device; FIG. 3 is a schematic partial cross-sectional view illustrating a first embodiment of the temperature measuring device of the present invention; FIG. 4 is along the 3 is a sectional view taken along line IV-IV in FIG. 3; FIG. 5 is a sectional view taken along line V-V in FIG. 4; FIG. 6 is a sectional view taken along line VI-VI in FIG. 4; 7 is a schematic partial cross-sectional view illustrating a second embodiment of the temperature measuring device of the present invention; FIG. 8 is a cross-sectional view taken along line Ⅷ-Ⅷ in FIG. 4; and FIG. 9 is a view similar to FIG. 8 is a sectional view illustrating a third embodiment of the temperature measuring device of the present invention.

Claims (10)

A temperature measuring device is suitable for being installed in a heating device. The temperature measuring device comprises: a pipe fitting unit installed in the heating device and comprising an isolation tube extending along a length direction; A first end of the heating device and a second end opposite to the first end; at least two insulation members respectively extending along the length direction, and each insulation member is interwoven with fiber materials and defines an insulation space, and A fixing part fixed to the isolation tube and a free part opposite to the fixing part, the fixing part and the free part respectively having a plurality of pores formed between the fibrous materials; and a thermocouple unit including at least one through Thermocouples placed in the isolating tube and used for measuring temperature, each thermocouple has two wires passing through the isolating tube, and each wire penetrates the corresponding insulation space through the pores of the free part of an individual insulation member, Keep these wires in the corresponding insulation space and insulate each other. The temperature measuring device according to claim 1, further comprising at least one adhesive, and the at least one thermocouple further has a sensing portion near the first end and electrically connected to the wires and used for measuring temperature, the At least one adhesive is bonded to the first end of the isolation tube and the sensing portion. The temperature measuring device according to claim 2, wherein the adhesive is a ceramic adhesive. The temperature measuring device according to claim 1, further comprising a fixing member provided on the isolation tube and used for fixing the insulation members on the isolation tube. The temperature measuring device according to claim 4, wherein the fixing member is a beam ring. The temperature measuring device according to claim 1, including ten insulation members, and the thermocouple unit includes five thermocouples, and the two wires of each thermocouple are inserted into the corresponding insulation through the pores of the free part of the individual insulation members. Space so that these wires are in the corresponding insulated space and insulated from each other. The temperature measuring device according to claim 6, wherein the isolation tube further has ten mounting holes extending from the first end in the length direction to the second end, and each of the wires passes through the corresponding mounting hole. The temperature measuring device according to claim 6, wherein the pipe fitting unit further includes a protection tube, the protection tube defines a containing room for the penetration tube to pass through. The temperature measuring device according to claim 6, wherein each wire has an insulation layer covering a part of the length of the wires, so that the wires of each thermocouple are insulated from each other in corresponding mounting holes. The temperature measuring device according to claim 9, wherein the isolation tube further has a plurality of mounting holes extending from the first end in the length direction to the second end, and each thermocouple passes through the corresponding mounting hole. .