CN213239233U

CN213239233U - Bendable armored thermocouple

Info

Publication number: CN213239233U
Application number: CN202021728473.0U
Authority: CN
Inventors: 卢清松
Original assignee: Zhejiang Ruidu Instrument Technology Co ltd
Current assignee: Zhejiang Ruidu Instrument Technology Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-05-18
Anticipated expiration: 2030-08-18

Abstract

The bendable armored thermocouple comprises a temperature measuring end (4), a bendable thermocouple section (5), a cold end (6) and a compensating lead (7) in sequence along the length direction, wherein a positive and negative wire (1) serving as an induction element is intersected at the temperature measuring end (4) and is connected with the compensating lead (7) through the thermocouple section (5) and the cold end (6), and the bendable armored thermocouple is characterized in that a metal outer sleeve (2) is sleeved outside the bendable thermocouple section (5), the metal outer sleeve (2) is a bendable slender pipe with the outer diameter not larger than 5mm, and an insulating material (3) is filled in a cavity between the positive and negative wires (1) of the induction element and a stainless steel outer sleeve; the metal outer sleeve is sheathed outside the thermocouple, so that the thermocouple is not easy to damage, has long service life, improves the accuracy and reliability of temperature measurement, and is particularly suitable for measuring the temperature of the wall adherent to the wall when the mechanical equipment runs.

Description

Bendable armored thermocouple

Technical Field

The utility model belongs to the technical field of temperature sensing, a can bend armor formula thermocouple is related to.

Background

At present, the contact temperature sensors are mainly thermocouples and thermal resistors, and the temperature parameters of a controlled object are converted into electric signals which are transmitted to a display, record and adjustment instrument, so that the object system carries out detection, adjustment and control. But their principle and characteristics are different. The principle of thermocouple thermometry is based on the thermoelectric effect. The principle of thermal resistance temperature measurement is based on the property that the resistance value of a conductor or semiconductor changes with temperature. Thermocouples can measure gas, liquid and vapor and solid surface or internal temperatures generally in the range of-200 ℃ to 1300 ℃. Thermal resistors are generally suitable for sensing temperatures in the range of 0-150 degrees.

In industrial processes, temperature is one of the important parameters that needs to be measured and controlled. In temperature measurement, the thermocouple is widely applied, and has the advantages of simple structure, convenient manufacture, wide measurement range, high precision, small inertia, convenient output signal remote transmission and the like. In addition, since the thermocouple is a passive sensor, no external power supply is needed during measurement, and the thermocouple is very convenient to use, the thermocouple is often used for measuring the temperature of gas or liquid in a furnace or a pipeline and the surface temperature of solid. And for the temperature measuring position far away from the cold end installation position, a bendable thermocouple with a longer thermocouple is required for measuring the temperature. At present, most of bendable thermocouples are used as outer wrapping layers of organic insulating materials wrapping the outer faces of a positive electrode and a negative electrode of an induction element, but the outer wrapping layers of the organic materials are easy to damage when in use.

Disclosure of Invention

The utility model aims to solve the technical problem that to above-mentioned technical current situation, provide a can bend armor formula thermocouple.

The utility model discloses the technical scheme that armoured formula thermocouple that can bend adopted as follows:

the utility model provides a can curved armoured thermocouple, includes temperature measurement end (4), can curved thermocouple section (5), cold junction (6), compensation wire (7) along its length direction in proper order, crosses at temperature measurement end (4) as sensing element's positive and negative pole line (1) to be connected with compensation wire (7) through thermocouple section (5), cold junction (6), its characterized in that, can bend thermocouple section (5) outside cover and be equipped with metal outer tube (2), metal outer tube (2) are the external diameter is not more than 5mm can bend the slender pipe, and it is full of insulating material (3) to fill in the cavity between sensing element positive and negative pole line (1) and the stainless steel outer tube.

The following is the further scheme of the bendable armored thermocouple of the utility model:

the positive and negative electrode wires (1) of the induction element are platinum wires or platinum-rhodium wires.

The metal outer sleeve (2) is a stainless steel outer sleeve.

And the insulating material (3) filled in the cavity between the positive and negative electrode wires (1) of the induction element and the stainless steel outer sleeve is manganese dioxide.

The utility model discloses a bendable armored thermocouple, because the cover is equipped with metal outer tube (2) outside induction element positive and negative pole line (1). The utility model discloses the temperature of wall is measured to the adherence when can bend armored thermocouple especially being fit for being used for the operation of machine equipment, and the cold junction mountable is in the department of being far away from the temperature measurement department. The long bendable thermocouple section is convenient to install and use in complex structure occasions. The thermocouple is sheathed with a metal outer sleeve, so that the thermocouple is not easy to damage and has long service life.

Drawings

Fig. 1 is an appearance schematic diagram of a bendable armored thermocouple of the present invention.

FIG. 2 is a schematic cross-sectional view of a bendable thermocouple segment.

Reference numbers in the figures: 1. positive and negative electrode lines of the induction element; 2. a metal outer sleeve; 3. an insulating material; 4. a temperature measuring end; 5. a thermocouple section; 6. cold heading; 7. and a compensation wire.

Detailed Description

Hereinafter, a specific embodiment of the present invention will be described with reference to fig. 1 to 2.

The utility model discloses armor formula thermocouple that can bend, as shown in fig. 1, include temperature measurement end 4 along its length direction in proper order, thermocouple section 5 that can bend, cold junction 6, compensation wire 7, positive negative pole line 1 as inductive element crosses at temperature measurement end 4, and through thermocouple section 5, cold junction 6 is connected with compensation wire 7, 5 outside covers of thermocouple section that can bend are equipped with metal outer tube 2, metal outer tube 2 is not more than 5 mm's the slender pipe that can bend for the external diameter, it is full of insulating material 3 to fill in the cavity between inductive element positive negative pole line 1 and the stainless steel outer tube.

The positive and negative electrode wires 1 of the induction element are platinum wires or platinum-rhodium wires. The metal outer sleeve 2 is a stainless steel outer sleeve. The cavity between the positive and negative electrode wires 1 of the inductive element and the stainless steel outer sleeve is filledThe full insulating material 3 is manganese dioxide particles, and the molecular formula of the main component manganese dioxide is MnO₂。

During the use, hug closely temperature measuring end 4 and treat the wall portion of temperature measurement, utilize the connecting screw will the utility model discloses the cold junction head 6 fixed mounting of the armor formula thermocouple that can bend is on mechanical equipment's the quick-witted wall, after confirming the position, screws up the connecting screw. The compensating lead 7 is connected with a temperature display instrument. The utility model discloses armored thermocouple device is particularly suitable for being used for the temperature of adherence measurement wall when the machine equipment operation.

Claims

1. The utility model provides a linear thermocouple of armor formula that can bend, includes temperature measurement end (4), thermocouple section (5) that can bend, cold junction (6), compensation wire (7) in proper order along its length direction, crosses at temperature measurement end (4) as sensing element's positive and negative pole line (1) to be connected with compensation wire (7) through thermocouple section (5), cold junction (6), its characterized in that, the thermocouple section (5) outside cover that can bend is equipped with metal outer tube (2), metal outer tube (2) are the slender pipe that can bend that the external diameter is not more than 5mm, and it is full of insulating material (3) to fill in the cavity between sensing element positive and negative pole line (1) and the stainless steel outer tube.

2. A bendable armored linear thermocouple according to claim 1, characterized in that the positive and negative wires (1) of the inductive element are platinum wires or platinum-rhodium wires.

3. A bendable armored linear thermocouple according to claim 1, characterized in that the metal outer sheath (2) is a stainless steel outer sheath.

4. A flexible sheathed wire thermocouple according to claim 1, in which the cavity between the positive and negative wires (1) of the sensing element and the stainless steel sheath is filled with manganese dioxide as the insulating material (3).