CN215773620U

CN215773620U - Electric heating tube with thermocouple for hot air outlet

Info

Publication number: CN215773620U
Application number: CN202121839973.6U
Authority: CN
Inventors: 王晨
Original assignee: Tianjin Renwei Technology Development Co Ltd
Current assignee: Tianjin Renwei Technology Development Co Ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-02-08
Anticipated expiration: 2031-08-09

Abstract

The utility model discloses an electric heating tube with a thermocouple for hot air outlet, which belongs to the field of electric heating tubes and comprises a heating tube, wherein the heating tube comprises a core, a heating wire, a protection tube and a thermoelectric element, the heating wire is wound on the surface of the core rod, the protection tube is arranged outside the heating wire, the inner wall of the protection tube is a high-temperature-resistant insulating layer, the outer wall of the protection tube is a stainless steel layer, a through hole is formed in the axial position of the core rod, the thermocouple is arranged in the through hole, one end of the heating wire is electrically connected with a power wire, the thermocouple is electrically connected with a thermocouple wire, one end of the heating tube is provided with an air inlet, the other end of the heating tube is provided with an air outlet, and the air inlet is provided with an air inlet joint.

Description

Electric heating tube with thermocouple for hot air outlet

Technical Field

The utility model relates to the field of electric heating pipes, in particular to an electric heating pipe with a thermocouple and hot air outlet.

Background

The electric heating tube is a tubular electric heating element, which is composed of a metal tube and resistance wires, high-temperature resistance wires are generally uniformly distributed in a stainless steel seamless tube, when current passes through the high-temperature resistance wires, the generated heat is diffused and transferred through the metal tube to achieve the purpose of heating, but the resistance wires can cause the temperature of the heater to rapidly rise after being electrified, so that the temperature is difficult to accurately control.

At present, chinese patent with application number CN201820279099.7 discloses a take thermocouple single-end stainless steel electric heating pipe, including the electric heating pipe body, the electric heating pipe body includes the interior heat pipe, sets up including the outer steel pipe in the heat pipe outside and set up the zone of heating between heat pipe and the outer steel pipe, the zone of heating is spiral heater strip, it has the electric heat to draw the stick to scarf in the interior heat pipe, the one end of electric heating pipe body is equipped with the trompil, the electric heat draws the stick to follow trompil department extends, the end that stretches out of stick is drawn to the electric heat is connected with the conductor wire, still embed K type thermocouple in the interior heat pipe, K type thermocouple extends from the trompil department of electric heating pipe body one end. The utility model discloses a through built-in K type thermocouple that has, become K type thermocouple and heater as an organic whole, can save space during the use, through K type thermocouple, can prevent that the temperature rise of heater itself is too high, accurate controlled temperature. However, when the device is used for controlling the temperature of the heater, the thermocouple is connected to the outside of the heater, so that the external space occupied by the device is increased, the device is inconvenient to use, and hot air cannot be generated. Based on the structure, the utility model designs the electric heating tube with the thermocouple for the hot air.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electric heating tube with a thermocouple for hot air outlet, which aims to solve the problems that the thermocouple for controlling the temperature of a heater is connected outside the heater by using the device, the length of the device is increased, and the device is inconvenient to use.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a go out electric heating pipe of hot-blast zone thermocouple, includes the heating pipe, the heating pipe is including core, heating wire, protection tube and thermoelectricity, plug surface winding is provided with the heating wire, the heating wire outside is provided with the protection tube, the protection tube inner wall is high temperature resistant insulating layer, the protection tube outer wall is the stainless steel layer, the through-hole has been seted up to plug axial position, through-hole internally mounted have the thermocouple, heating wire one end electric connection has the power cord, thermocouple electric connection has the thermocouple line, heating pipe one end is provided with the air inlet, the heating pipe other end is provided with the air outlet, air inlet department is provided with air inlet joint.

Preferably, the core rod is a ceramic rod resistant to high temperature of thousand degrees.

Preferably, the maximum temperature generated by electrifying the heating wire can reach 1100 ℃.

Preferably, the high-temperature-resistant insulating layer is made of ceramic or glass.

Preferably, the stainless steel layer is made of stainless steel 304 or 310S.

Preferably, the diameter of the through hole is about two millimeters, the through holes are provided with a plurality of thermocouples, and the thermocouples are located in the middle through holes.

Compared with the prior art, the utility model has the beneficial effects that: this device comprises plug, heating wire, thermocouple, outer protection tube, air inlet joint etc. and the during operation can produce the highest 1100 ℃ high temperature air current, and the during operation, the air current gets into from the heating pipe air inlet, through the heating wire heating, from the gas outlet blowout, can be used to work such as needs preheat, heating, braze, through built-in thermocouple, when can detecting the temperature of air current, the device can additionally not occupy certain exterior space, and the installation of the device of being convenient for is placed, facilitates the use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings described below are only some examples of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is a schematic view of the core rod structure of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-core rod, 2-electric heating wire, 3-protective tube, 4-high temperature resistant insulating layer, 5-stainless steel layer, 6-thermocouple, 7-power line, 8-thermocouple line, 9-air inlet and 10-air outlet.

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 examples 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.

Referring to fig. 1-2, the present invention provides a technical solution:

the utility model provides a go out electric heating pipe of hot-blast zone thermocouple, the heating pipe comprises a heating pipe, the heating pipe is including plug 1, heating wire 2, protection tube 3 and

thermocouple

6, 1 surface winding of plug is provided with

heating wire

2, 2 outsides of heating wire are provided with

protection tube

3, 3 inner walls of protection tube are high temperature resistant insulating layer 4, 3 outer walls of protection tube are stainless steel layer 5, the through-hole has been seted up to 1 axial position of plug, through-hole internally mounted has

thermocouple

6, 2 one end electric connection of heating wire have power cord 7, 6 electric connection of thermocouple has thermocouple wire 8, heating pipe one end is provided with air inlet 9, the heating pipe other end is provided with air outlet 10, air inlet 9 department is provided with air inlet joint.

Wherein, the core rod 1 is a ceramic rod resistant to high temperature of thousand degrees; the highest temperature generated by electrifying the heating wire 2 can reach 1100 ℃; the high-temperature-resistant insulating layer 4 is made of ceramic or glass; the stainless steel layer 5 is made of stainless steel 304 or 310S; the diameter of the through hole is about two millimeters, the through holes are provided with a plurality of thermocouples 6, and the thermocouples are located in the through holes in the middle.

One specific application of this embodiment is: the device can generate high-temperature airflow with the temperature of 1100 ℃ at most when working, and can be used for work needing preheating, heating, brazing and the like. The electric heating tube consists of a core rod 1, an electric heating wire 2, a thermocouple 6, a protection tube 3, an air inlet joint and the like. The electric heating tube is heated by an electric heating wire 2 wound on a core rod 1, a thermocouple 6 is inserted on the core rod 1 with a plurality of through holes in the middle, one end of the heating tube is an air inlet 9, and the other end is an air outlet 10. The core rod is a 1-degree high-temperature resistant 1000-degree ceramic rod with a plurality of through holes, a protection tube 3 is arranged outside the heating wire 2 and is divided into a high-temperature resistant insulating layer 4 (made of ceramic or glass) and a stainless steel layer 5 (made of stainless steel 304 or 310s), when the heating wire works, air flow enters from an air inlet 9 of the heating tube, is heated by the heating wire 2 and is sprayed out from an air outlet 10, and the thermocouple 6 can detect the temperature of the air flow.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a go out electric heating pipe of hot-blast zone thermocouple, includes the heating pipe, its characterized in that: the heating pipe is including plug (1), heating wire (2), protection tube (3) and thermocouple (6), plug (1) surface winding is provided with heating wire (2), heating wire (2) outside is provided with protection tube (3), protection tube (3) inner wall is high temperature resistant insulating layer (4), protection tube (3) outer wall is stainless steel layer (5), the through-hole has been seted up to plug (1) axial position, the through-hole internally mounted have thermocouple (6), heating wire (2) one end electric connection has power cord (7), thermocouple (6) electric connection has thermocouple wire (8), heating pipe one end is provided with air inlet (9), the heating pipe other end is provided with air outlet (10), air inlet (9) department is provided with air inlet connector.

2. An electric heating tube with a thermocouple for hot air outlet according to claim 1, characterized in that: the core rod (1) is a ceramic rod resistant to high temperature of thousand degrees.

3. An electric heating tube with a thermocouple for hot air outlet according to claim 1, characterized in that: the highest temperature generated by electrifying the heating wire (2) can reach 1100 ℃.

4. An electric heating tube with a thermocouple for hot air outlet according to claim 1, characterized in that: the high-temperature-resistant insulating layer (4) is made of ceramic or glass.

5. An electric heating tube with a thermocouple for hot air outlet according to claim 1, characterized in that: the stainless steel layer (5) is made of stainless steel 304 or 310S.

6. An electric heating tube with a thermocouple for hot air outlet according to claim 1, characterized in that: the diameter of the through hole is about two millimeters, the through holes are provided with a plurality of thermocouples (6), and the thermocouples are located in the through holes in the middle.