CN218444200U

CN218444200U - Thermocouple fixing device

Info

Publication number: CN218444200U
Application number: CN202222624673.7U
Authority: CN
Inventors: 高英; 韩伟良; 刘德平
Original assignee: Hebei Xinghua Iron And Steel Co ltd
Current assignee: Hebei Xinghua Iron And Steel Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-02-03
Anticipated expiration: 2032-10-08

Abstract

The utility model provides a thermocouple fixing device, belong to thermocouple equipment technical field, including first fixed pipe, fixed pipe of second and cable protection pipe, first fixed pipe one end welding is on the pipeline that awaits measuring, the other end is provided with the ring flange, the one end of the fixed pipe of second is provided with the ring flange matched with first fixed pipe, the other end of the fixed pipe of second is provided with the screw thread, the ring flange of the fixed pipe of first fixed pipe and second all is provided with a hole in the centre, the hole of the fixed pipe ring flange of first fixed pipe and second cooperatees, cable protection pipe passes through threaded connection on the fixed pipe of second, the activity sets up an elasticity stopper in the hole in the middle of the ring flange, be provided with the galvanic couple pipe in the elasticity stopper, be fixed with the shell fragment in the galvanic couple pipe. The thermocouple fixing device is easy to install and detach, the service life of the thermocouple is prolonged, and the thermocouple is fixed in position, so that measuring errors are avoided.

Description

Thermocouple fixing device

Technical Field

The utility model belongs to the technical field of thermocouple equipment, a thermocouple fixing device is related to.

Background

In the iron-making process, hot air is supplied from a hot blast stove through a hot air pipeline, the temperature of the hot air is required to be about 1200 ℃, the air pressure is required to be about 0.3MPa, the temperature of the hot air in the hot blast stove and the temperature of the hot air in the hot air pipeline must be measured and controlled, and the sensors used at present comprise a thermocouple, a non-contact photoelectric or radiation infrared temperature measurement sensor and a high-pressure sealing contact photoelectric temperature measurement sensor. Compared with the three, the thermocouple has the highest detection precision and the most intuitive measurement, so the thermocouple is commonly adopted to monitor the temperature of the hot blast stove and the hot blast pipeline.

However, the thermocouple has some disadvantages, the service life is short, the thermocouple is easy to damage due to high temperature and pressure of the use environment, and when the thermocouple is damaged, the thermocouple is difficult to replace and needs to be replaced by forced damping down, so that the iron tapping of the iron-making blast furnace is broken, and the indirect loss is serious.

The thermocouple protection tube which is mainly used for a long time is made of stainless steel, is influenced by high temperature and pressure, and can be bent and deformed after being used for a period of time, so that damage is caused. After the corundum thermocouple protection tube is replaced, the original thermocouple fixing device is not suitable for use, in the prior art, some thermocouple fixing devices are also available, but the thermocouple fixing device is not suitable for a high-temperature environment, and meanwhile, when the thermocouple is used in the environment, the thermocouple is not easy to fix due to hot air, the position is easy to change, and measurement errors are caused.

Disclosure of Invention

The utility model provides a thermocouple fixing device has solved above problem, can realize the fixed of the thermocouple on the hot-blast main, can protect the thermocouple again.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a thermocouple fixing device, including first fixed pipe, fixed pipe of second and cable protection pipe, the welding of first fixed pipe one end is on the pipeline that awaits measuring, the other end is provided with the ring flange, the one end of the fixed pipe of second is provided with the ring flange matched with first fixed pipe, the other end of the fixed pipe of second is provided with the screw thread, the ring flange of the fixed pipe of first fixed pipe and second all is provided with a hole in the centre, the hole cooperation of the fixed pipe ring flange of first fixed pipe and second, cable protection pipe passes through threaded connection on the fixed pipe of second, the activity sets up an elasticity stopper in the hole in the middle of the ring flange, be provided with the galvanic couple pipe in the elasticity stopper, be fixed with the shell fragment in the galvanic couple pipe.

Furthermore, the flanges of the first fixing pipe and the second fixing pipe are fixedly connected through screws, and the combined shape of the holes of the flanges of the first fixing pipe and the second fixing pipe is an inverted truncated cone.

Furthermore, the elastic plug is in the shape of an inverted truncated cone, and the size of the elastic plug is matched with the size of the holes of the flange plates of the first fixed pipe and the second fixed pipe.

Further, the elastic plug material is selected from asbestos.

Furthermore, a corundum protection tube is sleeved outside the thermocouple and inserted into the thermocouple tube of the elastic plug.

Since the technical scheme is used, the utility model discloses the technological effect who gains as follows:

the utility model provides a thermocouple fixing device easily installs and dismantles, and the thermocouple overcoat has the corundum protection tube, can be so that the live time extension of thermocouple, places in the couple pipe of elasticity stopper during the thermocouple uses, and the shell fragment that sets up in the couple pipe can further fixed the thermocouple, prevents hot-blast influence to the fixed position of thermocouple, can be so that the temperature of detection keeps in the temperature of same position.

The elastic plug is made of asbestos, is high-temperature resistant, is convenient to operate, avoids expansion with heat and contraction with cold caused by using metal materials in the environment, and is not easy to disassemble and assemble.

Drawings

FIG. 1 is a schematic view of a fixture of the present application;

FIG. 2 is a top plan view of the first fixed pipe flange;

FIG. 3 is a schematic view of an elastomeric plug and a coupling tube;

the thermocouple comprises a first fixing pipe, a second fixing pipe, a thermocouple, a cable protection pipe, a hole, an elastic plug, a thermocouple tube, a spring piece and a second fixing pipe, wherein the first fixing pipe is 1, the second fixing pipe is 2, the thermocouple is 3, the cable is 4, the cable is 5, the cable protection pipe is 6, the hole is 7, the elastic plug is 8, the thermocouple tube is 9, and the spring piece is elastic.

Detailed Description

The following detailed description explains the technical aspects of the present application in detail.

As shown in fig. 1-3, a thermocouple fixing device comprises a first fixing pipe 1, a second fixing pipe 2 and a cable protection pipe 5, wherein one end of the first fixing pipe 1 is welded on a pipeline to be measured, the other end of the first fixing pipe is provided with a flange, one end of the second fixing pipe 2 is provided with a flange matched with the flange of the first fixing pipe 1, the other end of the second fixing pipe 2 is provided with threads, the flanges of the first fixing pipe 1 and the second fixing pipe 2 are provided with a hole 6 in the middle, the holes 6 of the flanges of the first fixing pipe 1 and the second fixing pipe 2 are matched, the cable protection pipe 5 is connected onto the second fixing pipe 2 through threads, an elastic plug 7 is movably arranged in the hole 6 in the middle of the flange, a coupling pipe 8 is arranged in the elastic plug 7, and an elastic sheet 9 is fixed in the coupling pipe 8. The thermocouple 3 is sleeved with a corundum protection tube, inserted into a thermocouple tube 8 of the elastic plug 7 and fixed by an elastic sheet 9.

The flange plates of the first fixing pipe 1 and the second fixing pipe 2 are fixedly connected through screws, and the combined shape of the holes 6 of the flange plates of the first fixing pipe 1 and the second fixing pipe 2 is an inverted circular truncated cone. The holes 6 on the flange plates of the first fixed pipe 1 and the second fixed pipe 2 are inverted round platforms, the size of the hole 6 on the flange plate of the first fixed pipe 1 is smaller than that of the hole on the flange plate of the second fixed pipe 2, and after the first fixed pipe 1 and the second fixed pipe 2 are installed, the holes of the two fixed pipes are combined into a complete inverted round platform.

The elastic plug 7 is in the shape of an inverted truncated cone, and the size of the elastic plug is matched with the size of the hole 6 of the flange plate of the first fixing pipe 1 and the second fixing pipe 2. The elastic plug 7 is made of asbestos, is high temperature resistant, cannot expand with heat and contract with cold, and is convenient to disassemble and assemble.

During the installation, the hot-blast main upper shed, weld first fixed pipe 1, the fixed pipe of second 2 and first fixed pipe 1 pass through the ring flange fixed, and elasticity stopper 7 is placed in the hole, and the stopper is tight, and is fixed, fixes cable protection pipe 5 through threaded connection and the fixed pipe of second 2. The corundum protection tube is sleeved outside the thermocouple 3, and the cable 4 is connected to the thermocouple 3 and is arranged in the elastic plug 7. When the electric cable is required to be disassembled, the electric cable protection pipe 5 is screwed off, and the electric couple 3 is pulled out of the electric couple pipe of the elastic plug 7.

Meanwhile, according to actual needs, a plurality of identical thermocouple tubes 8 can be arranged in the elastic plug 7, and a plurality of thermocouples 3 can be placed.

Claims

1. A thermocouple fixing device characterized in that: including first fixed pipe (1), the fixed pipe of second (2), elasticity stopper (7) and cable protection pipe (5), the welding of first fixed pipe (1) one end is on the pipeline that awaits measuring, the other end is provided with the ring flange, the one end of the fixed pipe of second (2) is provided with the ring flange matched with the ring flange of first fixed pipe (1), the other end of the fixed pipe of second (2) is provided with the screw thread, the ring flange of the fixed pipe of first (1) and second (2) all is provided with one hole (6) in the centre, hole (6) of the fixed pipe of first (1) and second (2) ring flange cooperate, hole (6) that elasticity stopper (7) and the ring flange of the fixed pipe of first (1) and second (2) formed cooperate, cable protection pipe (5) are through threaded connection on the fixed pipe of second (2), be provided with galvanic couple pipe (8) in elasticity stopper (7), be fixed with shell fragment (9) in galvanic couple pipe (8).

2. A thermocouple securing device according to claim 1, further comprising: the flange plates of the first fixing pipe (1) and the second fixing pipe (2) are fixedly connected through screws, and the combined shape of the holes (6) of the flange plates of the first fixing pipe (1) and the second fixing pipe (2) is an inverted circular truncated cone.

3. A thermocouple securement device in accordance with claim 2, wherein: the elastic plug (7) is in the shape of an inverted round table body, and the size of the elastic plug is matched with the size of the hole (6) of the flange of the first fixed pipe (1) and the second fixed pipe (2).

4. A thermocouple securement device in accordance with claim 1, wherein: the material of the elastic plug (7) is asbestos.

5. A thermocouple securing device according to claim 1, further comprising: the thermocouple is sleeved with a corundum protection tube and is inserted into a thermocouple tube (8) of the elastic plug (7).