CN216978165U

CN216978165U - Thermocouple applied to glass liquid of electric melting furnace

Info

Publication number: CN216978165U
Application number: CN202220371636.7U
Authority: CN
Inventors: 江银; 卫丹; 熊龙; 杨宏波
Original assignee: Chongqing Chuanyi Instrument No17 Factory Co ltd
Current assignee: Chongqing Chuanyi Instrument No17 Factory Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-07-15
Anticipated expiration: 2032-02-23

Abstract

The utility model provides a thermocouple applied to glass liquid of an electric melting furnace, which comprises a junction box and a thermocouple assembly, wherein a metal protection pipe is sleeved at the measuring end of the thermocouple assembly, an inner connecting pipe for protecting the main body part of the thermocouple assembly is arranged between the metal protection pipe and the junction box, the inner connecting pipe is insulated and fixedly connected with the junction box, and the other end of the inner connecting pipe is fixedly connected with the metal protection pipe. The utility model provides a thermocouple applied to glass liquid of an electric melting furnace, which can protect a corundum tube of a thermocouple component to prevent the corundum tube from being damaged and polluted, and simultaneously solves the problem that a metal protection tube is sleeved outside the corundum tube to conduct electricity outwards, so that the non-conducting performance of the metal protection tube is realized, the service life of the thermocouple is prolonged, and the accuracy of temperature measurement is ensured.

Description

Thermocouple applied to glass liquid of electric melting furnace

Technical Field

The utility model relates to the technical field of thermocouples, in particular to a thermocouple applied to molten glass of an electric melting furnace.

Background

The thermocouple measuring end comprises a thermocouple wire for measuring temperature, an insulating tube and a corundum tube from inside to outside. The temperature measuring environment atmosphere of the glass kiln is complex, the measuring environment contains solid, liquid and gas, the temperature is high, the temperature range is 1400-plus-one 1700 ℃, meanwhile, the electric melting technology is adopted to assist electric heating, so that the glass liquid has electric conductivity, when the thermocouple measures the temperature of the glass liquid, the platinum-rhodium alloy is adopted as the outer protection tube, because the outer protection tube has electric conductivity, the thermocouple is easily polluted by the glass liquid at the high temperature of more than 1400 ℃, and the corundum tube is fragile and easy to damage. In the prior art, if infrared temperature measurement is adopted, but a non-contact measurement mode is adopted, the temperature measurement is inaccurate. If the mode of plating platinum on the outside of the corundum tube is adopted for temperature measurement, the corundum tube is easily polluted by glass liquid at the high temperature of more than 1400 ℃, and the corundum tube is fragile and easy to damage. Therefore, a thermocouple which can well protect the corundum tube, can measure the conductive fluid without conducting electricity outwards, can ensure the service life of the thermocouple measuring device and can ensure the temperature measurement accuracy is needed.

SUMMERY OF THE UTILITY MODEL

First, the technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the thermocouple applied to the glass metal of the electric melting furnace, the metal protection pipe is sleeved outside the corundum pipe, so that the problem that the corundum pipe is easy to damage is solved, and the problem that the service life of the thermocouple is short when a conductive fluid is measured because the sleeved metal protection pipe has conductivity is solved.

Second, the technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a be applied to thermocouple in electric melting furnace glass liquid, includes terminal box, thermocouple subassembly's measurement pot head is equipped with metal protection tube, and its key lies in: an inner connecting pipe used for protecting the main body part of the thermocouple assembly is arranged between the metal protection pipe and the junction box, the inner connecting pipe and the junction box are insulated and fixedly connected, and the other end of the inner connecting pipe is fixedly connected with the metal protection pipe.

Optionally, a protective tube for protecting the inner connecting tube is arranged outside the inner connecting tube, and the protective tube is insulated from the inner connecting tube.

Optionally, the protection tube includes a middle insulation tube, an outer connection tube, and a threaded adapter sleeve, the threaded adapter sleeve is fixed to the junction box, the threaded adapter sleeve and the inner connection tube are arranged in an insulating manner, the outer connection tube is fixed to the threaded adapter sleeve, and the middle insulation tube is fixed between the outer connection tube and the inner connection tube.

Optionally, the internal connection pipe and the junction box, and the threaded adapter sleeve and the internal connection pipe are insulated and fixedly connected by an insulating assembly, the insulating assembly is located in the threaded adapter sleeve and is integrally locked and fixed by the threaded adapter sleeve, and the threaded adapter sleeve is locked and fixed by a locking nut.

Optionally, the insulating assembly includes an insulating washer, a pressing plate, and an insulating sleeve, the insulating sleeve is sleeved on the end of the internal connection pipe, the pressing plate is disposed on the end face of the insulating sleeve, and the insulating washer is padded between the insulating sleeve and the connection end of the junction box.

Optionally, the end of the metal protection pipe is folded, and the folded part is clamped and fixed through a mounting seat and a connecting bolt; one end of the measuring end of the internal connecting pipe is fixed with the mounting seat, the middle insulating pipe is fixedly bonded with the external connecting pipe, and one end of the measuring end of the middle insulating pipe is fixed with the connecting bolt.

Optionally, the middle insulating tube and the outer connecting tube are fixed by metal adhesive.

Optionally, a cavity structure is left in the threaded adapter sleeve and is located between the insulating assembly and the middle insulating tube.

Optionally, an insulation gap is left between the middle insulation tube and the inner connection tube.

Optionally, the metal protection tube is sleeved with an outer protection tube.

Third, beneficial effect

The utility model provides a thermocouple applied to glass liquid of an electric melting furnace, which can protect a corundum tube of a thermocouple assembly and prevent the corundum tube from being damaged and polluted, and simultaneously solves the problem that a metal protection tube is sleeved outside the corundum tube and conductive fluid conducts electricity outwards, so that the non-conductive performance of the metal protection tube is realized, the service life of the thermocouple is prolonged, and the accuracy of temperature measurement is ensured.

Drawings

FIG. 1 is a schematic structural view of a thermocouple according to the present invention;

FIG. 2 is an enlarged view of A in FIG. 1;

fig. 3 is an enlarged view of B in fig. 1.

In the figure: 1 is a junction box; 2 is a thermocouple assembly; 3 is a metal protection tube; 4 is an inner connecting pipe; 5 is a middle insulating tube; 6 is an outer connecting pipe; 7 is a screw thread adapter sleeve; 8 is an insulating component; 8a is an insulating washer; 8b is a pressing plate; 8c is an insulating sleeve; 9 is a mounting seat; 10 is a connecting bolt; 11 is metal adhesive glue; 12 is a cavity structure; 13 is an insulation gap; 14 is an outer protection tube; and 15, a locking nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1-3, the present embodiment provides a technical solution: the utility model provides a be applied to thermocouple in electric melting furnace glass liquid, includes terminal box 1, thermocouple subassembly 2's measurement pot head is equipped with

metal protection tube

3, 3 outsourcing of metal protection tube are equipped with outer protection tube 14. The outer protective tube 14 can protect the metal protective tube from high temperature corrosion and contamination by conductive fluids.

In detail, an inner connection pipe 4 for protecting a main body portion of the thermocouple assembly 2 is disposed between the metal protection pipe 3 and the junction box 1, the inner connection pipe 4 is insulated and fixedly connected with the junction box 1, and the other end of the inner connection pipe 4 is fixedly connected with the metal protection pipe 3. And a protective tube for protecting the inner connecting tube 4 is arranged outside the inner connecting tube 4 to further protect the inner connecting tube, and the protective tube is arranged in an insulating way with the inner connecting tube 4 to ensure the insulating property of the inner connecting tube and an external component. The protection tube includes middle part insulating tube 5, outer connecting pipe 6, screw thread adapter sleeve 7 is fixed with terminal box 1, and this screw thread adapter sleeve 7 and interconnection are taken over between 4 insulating the setting, outer connecting pipe 6 is fixed with screw thread adapter sleeve 7, middle part insulating tube 5 is fixed in between outer connecting pipe 6 and the interconnection take over 4. All through insulating and fixed connection of insulating subassembly 8 between inner connection pipe 4 and terminal box 1, between screw adapter sleeve 7 and the inner connection pipe 4, the inner connection pipe passes through insulating subassembly and is insulated with terminal box and screw adapter sleeve respectively, kills two birds with one stone, cooperates the insulating tube in middle part simultaneously, and the inner connection pipe is thoroughly insulated between protection tube and the terminal box, realizes preventing outside electrically conductive.

In detail, the insulating assembly 8 is located in the threaded adapter sleeve 7 and is integrally locked and fixed by the threaded adapter sleeve 7, and the threaded adapter sleeve 7 is locked and fixed by the locking nut 15. The insulation assembly 8 comprises an insulation washer 8a, a pressing plate 8b and an insulation sleeve 8c, the insulation sleeve 8c is sleeved on the end of the inner connecting pipe 4, the pressing plate 8b is arranged on the end face of the insulation sleeve 8c, and the insulation washer 8a is padded between the insulation sleeve 8c and the connecting end of the junction box 1. The split type design of insulating assembly simultaneously through bolt adapter sleeve and lock nut's locking, prevents not hard up, easily assembles and dismantles, still makes things convenient for later stage maintenance.

In detail, the end of the metal protection tube 3 is flanged, and the flanged part is clamped and fixed by the mounting seat 9 and the connecting bolt 10, so that the mounting stability of the metal protection tube is ensured. One end of the measuring end of the inner connecting pipe 4 is fixed with the mounting seat 9, the middle insulating pipe 5 is fixedly bonded with the outer connecting pipe 6, and one end of the measuring end of the middle insulating pipe 5 is fixed with the connecting bolt 10. The middle insulating tube 5 and the outer connecting tube 6 are fixedly bonded through a metal bonding glue 11. The connection stability between the non-metal material and the metal material is ensured.

In detail, a cavity structure 12 is left in the threaded adapter sleeve 7, and the cavity structure 12 is located between the insulation assembly 8 and the middle insulation tube 5. The cavity structure can be as insulating clearance, promotes the insulating effect between interconnection connecting pipe and outer connecting pipe and the screw thread adapter sleeve, further ensures that the insulation resistance between screw thread adapter sleeve and the mount pad reaches more than 1000M omega, realizes further promotion of insulating effect, still can give way the equipment space in addition, convenient equipment. An insulation gap 13 is left between the middle insulation tube 5 and the inner connecting tube 4. Further promote insulating effect, still can set aside the equipment space in addition, convenient equipment.

In conclusion, the middle part insulating tube 5 and the insulating module 8 that set up form insulating relation with metal protection tube 3 and terminal box 1 and other parts that are located thermocouple subassembly 2 outside, guarantee the insulating nature between screw adapter sleeve 7 and the mount pad 9, and guarantee that resistance reaches more than 1000M omega to realize that metal protection tube can not outwards be electrically conductive, the outside electrically conductive effect of isolated glass liquid, promptly: middle part insulating tube 5 prevents that the metal protection tube from leading to the electrical conduction through the outside connecting pipe of connecting bolt 10, and insulating subassembly 8 then prevents that metal protection tube 3 from leading to electrical conduction to terminal box 1 through interconnection connecting pipe 4, and outer connecting pipe 6 and interconnection connecting pipe 4 are fixed respectively moreover, and installation stability is fabulous.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a be applied to thermocouple in electric melting furnace glass liquid, includes terminal box, thermocouple subassembly's measurement pot head is equipped with metal protection tube, its characterized in that: an inner connecting pipe used for protecting the main body part of the thermocouple assembly is arranged between the metal protection pipe and the junction box, the inner connecting pipe and the junction box are insulated and fixedly connected, and the other end of the inner connecting pipe is fixedly connected with the metal protection pipe.

2. A thermocouple for use in electric melter as defined in claim 1 wherein: and a protective tube for protecting the inner connecting tube is arranged outside the inner connecting tube, and the protective tube is insulated from the inner connecting tube.

3. A thermocouple for use in electric melter as claimed in claim 2 wherein: the protection tube comprises a middle insulating tube, an outer connecting tube and a thread adapter sleeve, the thread adapter sleeve is fixed to the junction box, the thread adapter sleeve and the inner connecting tube are arranged in an insulating mode, the outer connecting tube is fixed to the thread adapter sleeve, and the middle insulating tube is fixed between the outer connecting tube and the inner connecting tube.

4. A thermocouple for use in electric melter as claimed in claim 3 wherein: the connecting structure is characterized in that the internal connecting pipe and the junction box and the threaded switching sleeve and the internal connecting pipe are both insulated and fixedly connected through an insulating assembly, the insulating assembly is positioned in the threaded switching sleeve and is integrally locked and fixed through the threaded switching sleeve, and the threaded switching sleeve is locked and fixed through a locking nut.

5. A thermocouple for use in electric melter as claimed in claim 4 wherein: the insulating assembly comprises an insulating washer, a pressing plate and an insulating sleeve, the insulating sleeve is sleeved on the end head of the inner connecting pipe, the pressing plate is arranged on the end face of the insulating sleeve, and the insulating washer is padded between the insulating sleeve and the connecting end of the junction box.

6. A thermocouple for use in electric melter as claimed in claim 3 or 4 wherein: the end part of the metal protection pipe is folded, and the folded part is clamped and fixed through a mounting seat and a connecting bolt; one end of the measuring end of the internal connecting pipe is fixed with the mounting seat, the middle insulating pipe is fixedly bonded with the external connecting pipe, and one end of the measuring end of the middle insulating pipe is fixed with the connecting bolt.

7. A thermocouple for use in electric melter as defined in claim 6 wherein: the middle insulating tube and the outer connecting tube are fixedly connected through metal bonding glue.

8. A thermocouple for use in electric melter as claimed in claim 3 wherein: a cavity structure is reserved in the thread adapter sleeve and is located between the insulating assembly and the middle insulating pipe.

9. A thermocouple for use in electric melter as claimed in claim 3 wherein: and an insulation gap is reserved between the middle insulation pipe and the inner connecting pipe.

10. A thermocouple for use in electric melter as defined in claim 1 wherein: the metal protection pipe is sleeved with an outer protection pipe.