CN211373862U

CN211373862U - Multistage leakage-resistant thermocouple in steel industry

Info

Publication number: CN211373862U
Application number: CN201922024411.5U
Authority: CN
Inventors: 陈强
Original assignee: Tianjin Yuchuang Temperature Instr Co ltd
Current assignee: Tianjin Yuchuang Temperature Instr Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-08-28
Anticipated expiration: 2029-11-21

Abstract

The application discloses multistage thermocouple that leaks that hinders of steel industry, multistage thermocouple that leaks that hinders include big cavity stainless steel die-casting terminal box, set up wiring mechanism, setting on the lateral wall of big cavity stainless steel die-casting terminal box are in the main part mechanism of the bottom of big cavity stainless steel die-casting terminal box. Two ends of the fastening nut are respectively in threaded connection with the connecting end and the first corundum tube, and a sealed graphite gasket is arranged between the fastening nut and the connecting end; the temperature measuring core is characterized in that the connecting end is provided with a hollow cavity, the compensating lead is arranged in the hollow cavity, one end of the compensating lead is connected with the temperature measuring core body, and the joint is fastened and sealed through a screw. The utility model provides a multistage thermocouple that leaks that hinders through set up sealed graphite gasket, compensation wire junction between fastening nut and connection end through the sealed temperature measurement core body of screw reinforcement, sets up the cavity simultaneously and as the buffer space who reveals steam, realizes the triple effect that leaks that hinders, can prevent effectively that the hot-blast thermocouple that reaches 1200 ~1400 ℃ from leaking out.

Description

Multistage leakage-resistant thermocouple in steel industry

Technical Field

The application relates to the field of thermocouples, in particular to a multi-stage leakage-resistant thermocouple.

Background

The thermocouple is a commonly used temperature measuring element in a temperature measuring instrument, directly measures temperature, converts a temperature signal into a thermal electromotive force signal, and converts the thermal electromotive force signal into the temperature of a measured medium through an electric instrument (a secondary instrument). The appearance of various thermocouples is very different according to needs, but the basic structures of the thermocouples are almost the same, and the thermocouples are generally composed of main parts such as a thermode, an insulating sleeve protection tube, a junction box and the like, and are generally matched with a display instrument, a recording instrument and an electronic regulator for use. The multi-stage leakage-proof thermocouple is a common thermocouple for conveniently installing the blast furnace.

The thermocouple is mainly used for measuring the temperature of a hot blast stove in a steel mill, the temperature of hot blast blown out by the hot blast stove is 1200-1400 ℃, and in the actual use process of the traditional thermocouple, hot blast is easy to leak through the thermocouple, so that production workers are seriously burned, and production accidents are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a multistage thermocouple that leaks that hinders of steel industry prevents hot-blast the revealing, avoids taking place the production accident.

The application discloses multistage thermocouple that leaks that hinders of steel industry, a serial communication port, multistage thermocouple that leaks that hinders includes big cavity stainless steel die-casting terminal box, sets up wiring mechanism, setting on the lateral wall of big cavity stainless steel die-casting terminal box are in the main part mechanism of the bottom of big cavity stainless steel die-casting terminal box.

The main body mechanism comprises a connecting end, a first corundum tube, a fastening nut, a temperature measuring core body arranged in the first corundum tube, and a compensating lead for connecting the temperature measuring core body and the galvanic couple meter head.

The two ends of the fastening nut are respectively in threaded connection with the connecting end and the first corundum tube, and a sealed graphite gasket is arranged between the fastening nut and the connecting end; the temperature measuring core is characterized in that the connecting end is provided with a hollow cavity, the compensating lead is arranged in the hollow cavity, one end of the compensating lead is connected with the temperature measuring core body, and the joint is fastened and sealed through a screw.

Optionally, a sealed graphite gasket is arranged between the fastening nut and the first corundum tube.

Optionally, the main body mechanism comprises a second corundum tube sleeved inside the first corundum tube, and the temperature measuring core body is arranged inside the second corundum tube.

Optionally, the wiring mechanism comprises a wiring sleeve, a wiring terminal and a connecting wire; one end of the wiring sleeve is fixed on one side of the large-cavity stainless steel die-cast junction box, the other end of the wiring sleeve is connected with the connecting wire, the wiring terminal is nested on the wiring sleeve, and one end of the connecting wire is led out from the wiring sleeve.

Optionally, the wiring mechanism further comprises three fixing rings, and the three fixing rings are respectively arranged on the top and two sides of the large-cavity stainless steel die-casting junction box.

Optionally, the main body mechanism further comprises a flange, and the flange is arranged on the first corundum tube and used for fixing the multi-stage leakage-resistant thermocouple on the blast furnace.

The utility model provides a multistage thermocouple that leaks that hinders through set up sealed graphite gasket, compensation wire junction between fastening nut and connection end through the sealed temperature measurement core body of screw reinforcement, sets up the cavity simultaneously and as the buffer space who reveals steam, realizes triple effect that leaks of hindering, can prevent effectively that the hot-blast of reaching 1200 ℃ -1400 ℃ from leaking out through the thermocouple.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic view of a multi-stage leakage-blocking thermocouple according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a portion of a coupling end and fastening nut according to an embodiment of the present application;

FIG. 3 is a partial cross-sectional view of a first corundum tube, a second corundum tube and a temperature measuring core body according to one embodiment of the present application;

1, a large-cavity stainless steel die-casting junction box; 2. a wiring mechanism; 21. a wiring sleeve; 22. a binding post; 23. a connecting wire; 24. a fixing ring; 25. a compensation wire; 26. a screw; 27. a graphite gasket; 3. a main body mechanism; 31. connecting the end heads; 32. fastening a nut; 33. A first corundum tube; 34. a flange; 35. a second corundum tube; 36. a temperature measuring core body; 38. a hollow cavity; 39. an inner cavity;

Detailed Description

It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.

Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The present application is described in detail below with reference to the figures and alternative embodiments.

As shown in fig. 1 and fig. 2, as an embodiment of the present application, a multistage leakage-preventing thermocouple in the steel industry is disclosed, which includes a large-cavity stainless steel die-cast junction box 1, a wiring mechanism 2 disposed on a side wall of the large-cavity stainless steel die-cast junction box 1, and a main body mechanism 3 disposed at the bottom of the large-cavity stainless steel die-cast junction box 1.

The main body mechanism 3 comprises a connecting end 31, a first corundum tube 33, a fastening nut 32, a temperature measuring core body 36 arranged in the first corundum tube 33, and a compensating lead 25 connected with the temperature measuring core body 36 and the large-cavity stainless steel die-cast junction box 1.

The two ends of the fastening nut 32 are respectively in threaded connection with the connecting end 31 and the first corundum tube 33, and a sealed graphite gasket 27 is arranged between the fastening nut 32 and the connecting end 31; the connecting end 31 is provided with a hollow cavity 38, the compensating lead 25 is arranged in the hollow cavity 38, one end of the compensating lead is connected with the temperature measuring core body 36, and the connection part is fastened and sealed through a screw 26.

The thermocouple is mainly used for measuring the temperature of a hot blast stove in a steel mill, the temperature of hot blast air blown out by the hot blast stove is 1200-1400 ℃, the hot blast air is blown to the blast furnace for melting iron ore powder pellets into molten iron, so any grease can not bear the high temperature, the corundum tube must be insulated from a platinum-rhodium couple core body, and any solution cannot be filled! Hot air in the hot blast stove up to 1200-1400 ℃ can leak through a thermocouple and seriously burn production workers, thereby causing production accidents. The utility model provides a multistage thermocouple that leaks that hinders through set up sealed graphite gasket 27, compensation wire 25 junction between fastening nut 32 and connection end 31 and pass through screw 26 reinforcement sealed temperature measurement core body 36, sets up cavity 38 simultaneously and as the buffer space who leaks steam, realizes the triple effect that leaks that hinders, can prevent effectively that the hot-blast thermocouple that reaches 1200 ℃ -1400 ℃ from leaking out, prevents the burn production workman, avoids taking place the production accident.

Further, a sealing graphite gasket 27 may be disposed between the fastening nut 32 and the first corundum tube 33. Further multistage leak-proof thermocouple is sealed, combines above-mentioned triple leak-proof scheme, can realize quadruple leak-proof effect, further guarantees that hot-blast is difficult to reveal.

In addition, as shown in fig. 3, the main body mechanism 3 further includes a second alundum tube 35 sleeved inside the first alundum tube 33, and the temperature measuring core body 36 is arranged inside the second alundum tube 35.

As shown in fig. 1, the wiring mechanism 2 includes a wiring sleeve 21, a wiring terminal 22 and a connection wire 23; one end of the wiring sleeve 21 is fixed on one side of the large-cavity stainless steel die-casting junction box 1, the other end of the wiring sleeve is connected with the connecting wire 23, the wiring terminal 22 is nested on the wiring sleeve 21, one end of the connecting wire 23 is led out from the wiring sleeve 21, and therefore the multistage leakage-resistant thermocouple is convenient to electrify.

The wiring mechanism 2 further comprises three fixing rings 24, and the three fixing rings 24 are respectively arranged on the top and two sides of the galvanic couple meter head 1, so that the galvanic couple meter head 1 can be conveniently fixed.

The main body mechanism 3 further comprises a flange 34, wherein the flange 34 is arranged on the first corundum tube 33 and used for fixing the multi-stage leakage-resistant thermocouple on the blast furnace.

To facilitate understanding of the working process of the multi-stage leakage-resistant thermocouple, it is necessary to explain that: connecting the connecting wire 23 with a corresponding power supply to complete the preparation work before the use of the multi-stage leakage-resistant thermocouple, inserting the temperature measuring core body 36 into a medium needing temperature measurement, and at the moment, sensing the temperature of the medium by the temperature measuring core body 36, transmitting a signal to the couple meter head 1, and displaying the signal in a specific numerical value on a display screen on the couple meter head 1; after a long period of use, the connection line 23 is disconnected from the power supply.

The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.

Claims

1. The utility model provides a multistage thermocouple that leaks that hinders of steel trade which characterized in that, multistage thermocouple that leaks that hinders includes:

a large-cavity stainless steel die-casting junction box (1);

the wiring mechanism (2) is arranged on the side wall of the large-cavity stainless steel die-cast junction box (1);

the main body mechanism (3) is arranged below the large-cavity stainless steel die-casting junction box (1);

the main body mechanism (3) comprises a connecting end (31), a first corundum tube (33), a fastening nut (32), a temperature measuring core body (36) arranged in the first corundum tube (33), and a compensating lead (25) for connecting the temperature measuring core body (36) and the large-cavity stainless steel die-casting junction box (1);

wherein, both ends of the fastening nut (32) are respectively in threaded connection with the connecting end (31) and the first corundum tube (33), and a sealed graphite gasket (27) is arranged between the fastening nut (32) and the connecting end (31); the temperature measuring core is characterized in that a hollow cavity (38) is arranged at the connecting end (31), the compensating lead (25) is arranged in the hollow cavity (38), one end of the compensating lead is connected with the temperature measuring core body (36), and the joint is fastened and sealed through screws.

2. A multistage leak-stopping thermocouple for the steel industry according to claim 1, characterised in that a sealed graphite gasket (27) is provided between the fastening nut (32) and the first corundum tube (33).

3. The multistage leak-stopping thermocouple for the steel industry as defined in claim 2, wherein the main body mechanism (3) comprises a second corundum tube (35) sleeved inside the first corundum tube (33), and the temperature measuring core body (36) is arranged inside the second corundum tube (35).

4. The multistage leakage-proof thermocouple in the steel industry as claimed in claim 1, wherein the wiring mechanism (2) comprises a wiring sleeve (21), a wiring terminal (22) and a connecting wire (23), one end of the wiring sleeve (21) is fixed on one side of the large-cavity stainless steel die-cast junction box (1), the other end of the wiring sleeve is connected with the connecting wire (23), the wiring terminal (22) is nested on the wiring sleeve (21), and one end of the connecting wire (23) is led out from the wiring sleeve (21).

5. The multistage leak-stopping thermocouple for the steel industry as defined in claim 1, characterized in that said wiring mechanism (2) further comprises three fixing rings (24), said three fixing rings (24) being respectively disposed on the top and both sides of said large-cavity stainless steel die-cast junction box (1).

6. The steel industry multi-stage leakage-resistant thermocouple according to claim 1, wherein the main body mechanism (3) further comprises a flange (34), and the flange (34) is arranged on the first corundum tube (33) and used for fixing the multi-stage leakage-resistant thermocouple on a blast furnace.