CN212206404U - Hot air temperature thermocouple protection device - Google Patents
Hot air temperature thermocouple protection device Download PDFInfo
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- CN212206404U CN212206404U CN202020542978.1U CN202020542978U CN212206404U CN 212206404 U CN212206404 U CN 212206404U CN 202020542978 U CN202020542978 U CN 202020542978U CN 212206404 U CN212206404 U CN 212206404U
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- thermocouple
- hot air
- ball valve
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- tube
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Abstract
The utility model discloses a hot air temperature thermocouple protection device, which comprises a hot air thermocouple protection tube, a ball valve, a cutting sleeve, a base, a junction box and a wire aligning head; the upper end of the thermocouple protection tube is provided with outer tube threads, and the thermocouple protection tube is connected with the ball valve in a sealing manner through the outer tube threads; the ball valve is opened, and the thermocouple can penetrate through the ball valve and is arranged in the thermocouple protection tube to enter the hot air pipeline for temperature measurement; the ball valve is closed, so that the thermocouple protection tube can be sealed; the other end of the ball valve is connected with a junction box through a wire aligning head; the lower end of the hot air couple protection pipe is arranged on a hot air main pipeline through a clamping sleeve and a base. The utility model discloses accomplish fast when the thermocouple protection tube burns out hot-blast when revealing in hot-blast trunk line inside and hinder hourglass, prevent the problem enlargements.
Description
Technical Field
The utility model relates to a thermotechnical instrument detects technical field, especially relates to a hot-blast temperature thermocouple protection device.
Background
Blast furnace iron-making is a continuous production process, hot air temperature is one of key detection parameters of blast furnace iron-making operation, generally is 1000-1300 ℃, the measurement position is in the environment of high temperature, high pressure and high flow rate in a hot air main pipeline, the traditional means is to use a thermocouple to be inserted into the hot air pipeline for detection, a platinum thermocouple is usually used, and the thermocouple needs to be protected by a protection pipe. The condition of easily breaking off is used to carborundum or corundum protection tube, the present protection tube generally uses the high temperature resistant stainless steel pipe of thick wall, the high temperature resistant stainless steel pipe of thick wall is with high costs and long-time back of using, the inside portion that exposes resistant firebrick of hot-blast trunk line of protection tube insert can burn out, cause the interior hot-blast of pipeline to leak out through the thermocouple protection tube, blow thermocouple couple silk, influence the measurement of hot-blast temperature, burn through hot-blast trunk line even, for this reason the blast furnace generally needs the damping or the processing of damping down to influence the steady operation of blast furnace production.
(1) Other existing hot air temperature thermocouple protection device technologies are as follows:
the patent technology of blast furnace hot blast temperature thermocouple junction box (application No. CN201621476691.3 publication (notice) No. CN206420574U) of Liuzhou iron and steel products Limited company belongs to the field of mechanical manufacture, and relates to the technical field of iron-making equipment manufacture; including silicon carbide protective case, silicon carbide protective case's the outside is equipped with metal sleeve, thermocouple mounting flange is passed to metal sleeve's one end, metal sleeve's the other end and flange formula terminal box one end are connected, the flange formula terminal box other end and outer flange cover connection. Because the metal sleeve is arranged outside the silicon carbide protective sleeve, the probability of cracks appearing on the silicon carbide protective sleeve is reduced; due to the flange-type junction box, air leakage does not occur when the protective sleeve is broken, the damping down time and the damping down frequency of the blast furnace are reduced, the continuous production of the blast furnace is ensured, the yield is increased, and the consumption is reduced; finally, the service life of the thermocouple can be prolonged, and the spare part cost and the maintenance cost are reduced.
② a device for measuring the temperature of blast furnace hot air (application No. CN201721664040.1 publication (announcement) No. CN207512204U) patent technology of Tangshanguofeng iron and steel Limited company, which relates to a device for measuring the temperature of blast furnace hot air and belongs to the technical field of blast furnace hot air temperature measuring equipment. The technical scheme is as follows: the outer corundum tube is sleeved on the inner corundum tube, the thermocouple core is arranged in the inner corundum tube, the mounting flange is fixed on the outer corundum tube, the fixing flange is fixed at one end of the outer corundum tube, one end of the junction box connecting tube is fixed on the fixing flange, the other end of the junction box connecting tube is fixedly connected with the junction box, and the thermocouple core in the inner corundum tube penetrates through the junction box connecting tube to be connected with the junction box. The utility model provides a device of blast furnace hot-blast temperature measurement can measure blast furnace hot-blast temperature steadily in the blast furnace continuous production process, because the utility model discloses at the outer cover of inlayer corundum pipe there is outer corundum pipe, and mounting flange fixes on outer corundum pipe, and outer corundum pipe still is equipped with the stainless steel protection tube in mounting flange outer tip portion, and the one end of outer corundum pipe is sealed by mounting flange, double-deck asbestos pad and upper pressure flange lid. Therefore, air leakage is avoided when the protective sleeve is broken, the safety accidents of personnel injury and the equipment accidents of blast furnace damping down caused by hot air ejection are avoided, the potential safety hazards of equipment are eliminated, and the stable operation of the blast furnace is ensured.
③ inner Mongolia Steel-clad-Steel-gang-Limited temperature measurement element with a cutting-sleeve-type mounting mode (application No. CN201320709758.3 publication No. CN203561452U) patent technology relates to a temperature measurement element, in particular to a temperature measurement element with a cutting-sleeve-type mounting mode. A temperature measuring element adopting a ferrule type installation mode comprises a temperature measuring element, a ferrule, a nut and a screw rod; the lower part of the cutting sleeve is provided with a clamping groove, the screw rod is arranged at the upper part of the cutting sleeve, through holes are formed in the middle parts of the cutting sleeve and the screw rod, the temperature measuring element is arranged in the through holes, and the nut is arranged on the screw rod; the shape of draw-in groove is the slope formula of bodiness gradually, and it is tighter to be convenient for when the installation block more tight, installs high temperature resistant gasket in the through-hole at cutting ferrule and screw rod middle part, has just so guaranteed that the installation seals tightly. The utility model discloses a cutting ferrule's connected mode can reach online change, and thermocouple protective case adopts the outside stainless steel pipe that has high temperature resistant heat protection coating, has so both prolonged temperature element life cycle, has practiced thrift the fund again.
(2) There are problems and deficiencies:
according to the method in the patent technology, the metal sleeve is arranged on the outer side of the silicon carbide protective sleeve, so that the probability of cracks appearing on the silicon carbide protective sleeve outside the mounting flange is reduced, meanwhile, due to the fact that the flange type junction box is arranged, air is not leaked when the protective sleeve is broken, the probability of cracks still appears on the silicon carbide protective sleeve inside the mounting flange easily, and the platinum thermocouple inside the silicon carbide protective sleeve is damaged to bring loss. The method comprises the following steps that an outer-layer corundum tube is sleeved on the outer layer of an inner-layer corundum tube, an installation flange is fixed on the outer-layer corundum tube, a stainless steel protection tube is further arranged at the outer end part of the installation flange of the outer-layer corundum tube, one end of the outer-layer corundum tube is sealed by a fixing flange, a double-layer asbestos pad and an upper pressing flange cover, and although air does not leak when the protection tube is broken, the two layers of corundum tubes in the installation flange are prone to crack, so that a platinum thermocouple in the corundum tube is damaged, and loss is brought. The method in the patent technology (III) adopts a ferrule type connection mode, online replacement can be achieved, the thermocouple protective sleeve adopts a stainless steel pipe coated with high-temperature-resistant heat-proof coating outside, although the service cycle of the temperature measuring element is prolonged, the stainless steel pipe of the high-temperature-resistant heat-proof coating is expensive, and the first investment cost of the cycle is greatly increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hot-blast temperature thermocouple protection device, accomplish to hinder the hourglass fast when the thermocouple protection tube burns out hot-blast when revealing in hot-blast trunk line inside, prevents the problem enlargements.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model relates to a hot air temperature thermocouple protection device, which comprises a hot air thermocouple protection tube, a ball valve, a cutting sleeve, a base, a junction box and a butt wire head;
the upper end of the thermocouple protection tube is provided with outer tube threads, and the thermocouple protection tube is connected with the ball valve in a sealing manner through the outer tube threads;
the ball valve is opened, and a thermocouple wire and a ceramic bead can penetrate through the ball valve to be installed in a thermocouple protection tube and enter a hot air pipeline for temperature measurement; the ball valve is closed, so that the thermocouple protection tube can be sealed;
the other end of the ball valve is connected with a junction box through a wire aligning head;
the lower end of the hot air couple protection pipe is arranged on a hot air main pipeline through a clamping sleeve and a base.
Furthermore, the thermocouple protection tube comprises an iron tube and a stainless steel tube which are welded up and down, the outer tube is arranged at the upper end of the iron tube in a threaded manner, and the lower end of the stainless steel tube is arranged on the hot air main pipeline through a clamping sleeve and a base.
Furthermore, the thermocouple wire and the ceramic bead are arranged in the hot air couple protection tube, the working end of the thermocouple wire and the ceramic bead is arranged at the front end of the head part of the hot air couple protection tube, and the non-working end is connected with the compensation lead in the junction box through the wiring ceramic base and is connected with the temperature measuring instrument system.
Furthermore, the base is vertically welded on the position of a thermocouple mounting hole formed in the upper part of a metal shell of the hot air main pipeline.
Furthermore, the cutting sleeve is fixedly arranged outside the thermocouple protection tube in a sealing mode.
Further, the cutting ferrule and the base are connected in a sealing mode through threads.
Compared with the prior art, the utility model discloses a beneficial technological effect:
the utility model discloses accomplished in blast furnace continuous production process, can hinder the hourglass fast when the thermocouple protection tube is hot-blast when revealing of the inside scaling loss of hot-blast trunk line, prevent the problem enlargement, make manufacturing cost greatly reduced moreover, can satisfy blast furnace ironmaking hot air temperature thermocouple temperature measurement operation requirement completely.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
Fig. 1 is a schematic structural view of a hot air temperature thermocouple protection device of the present invention;
FIG. 2 is a schematic view of the protecting tube of the medium-heat couple of the present invention;
FIG. 3 is a schematic view of a cooperatively mounted ball valve;
fig. 4 is a schematic view of the actual installation of the hot air temperature thermocouple protection device of the present invention.
Description of reference numerals: 1. the thermocouple protection tube comprises 1-1 parts of a hot air couple protection tube, 1-2 parts of an iron tube, a stainless steel tube, 2 parts of an outer tube thread, 3 parts of a ball valve, 4 parts of a clamping sleeve, 5 parts of a base, 6 parts of a thermocouple wire and a ceramic bead, 7 parts of a wiring ceramic base, 8 parts of a junction box, 9 parts of a butt wire head, 10 parts of a metal shell, 11 parts of a refractory brick layer, 12 parts of a welding line.
Detailed Description
As shown in fig. 1 to 4, a hot air temperature thermocouple protection tube comprises a hot air thermocouple protection tube 1, a ball valve 3, a cutting sleeve 4, a base 5, a junction box 8 and a wire butt 9, wherein the hot air thermocouple protection tube 1 is formed by welding an iron tube 1-1 and a stainless steel tube 1-2 (as shown in fig. 2); the stainless steel pipe 1-2 is a thick-wall stainless steel pipe with one blind side, the length of the thick-wall stainless steel pipe is slightly longer than the metal wall thickness of the hot air main pipe, the thickness of a refractory brick and the total length of the refractory brick layer exposed out of the hot air couple protection pipe according to requirements, and a welding seam 12 is ensured to be close to the metal shell 10 of the hot air main pipe; the use amount of the thick-wall stainless steel pipe is reduced and the thick-wall stainless steel pipe is replaced by the iron pipe 1-1, so that the cost is reduced; the outer end of the iron pipe 1-1 is provided with an outer pipe thread 2 for connecting a ball valve 3, and the iron pipe 1-1 is tightly connected with one end of the ball valve 3 through a thread to ensure reliable sealing (as shown in figure 3); the base 5 is vertically welded at the position where a thermocouple mounting hole is formed in the upper part of the hot air main pipe metal shell 10; the thermocouple protection tube 1 is inserted into the hot blast main pipe metal shell 10 and the refractory brick layer 11 through the base 5, and the refractory brick layer 11 is exposed out of the head of the thermocouple protection tube 1 according to the required length; the thermocouple protection tube 1 is fixedly arranged on a base 5 through a clamping sleeve 4 (can be in threaded sealing connection or sealing clamping connection); the other end of the ball valve 3 is connected with a junction box 8 through a wire butt 9; the ball valve 3 is opened, and a thermocouple wire and a ceramic bead 6 can penetrate through the ball valve 3, be installed in the thermocouple protection tube 1 and enter a hot air pipeline for temperature measurement; the ball valve 3 is closed, so that the thermocouple protection tube 1 can be sealed; the thermocouple wire and the ceramic bead 6 are arranged inside the thermocouple protection tube 1, the working end (hot end) of the thermocouple wire and the ceramic bead 6 is arranged at the front end of the head of the thermocouple protection tube 1, and the non-working end (cold end) is connected with a compensation wire in a junction box 8 through a wiring ceramic base 7 and connected with a temperature measuring instrument system.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (6)
1. A hot air temperature thermocouple protection device is characterized in that: the hot air couple protection pipe comprises a hot air couple protection pipe, a ball valve, a clamping sleeve, a base, a junction box and a wire butt;
the upper end of the thermocouple protection tube is provided with outer tube threads, and the thermocouple protection tube is connected with the ball valve in a sealing manner through the outer tube threads;
the ball valve is opened, and a thermocouple wire and a ceramic bead can penetrate through the ball valve to be installed in a thermocouple protection tube and enter a hot air pipeline for temperature measurement; the ball valve is closed, so that the thermocouple protection tube can be sealed;
the other end of the ball valve is connected with a junction box through a wire aligning head;
the lower end of the hot air couple protection pipe is arranged on a hot air main pipeline through a clamping sleeve and a base.
2. The hot blast temperature thermocouple protection device according to claim 1, characterized in that: the hot air couple protection pipe comprises an iron pipe and a stainless steel pipe which are welded up and down, the outer pipe is arranged at the upper end of the iron pipe in a threaded mode, and the lower end of the stainless steel pipe is arranged on a hot air main pipeline through a clamping sleeve and a base.
3. The hot blast temperature thermocouple protection device according to claim 1, characterized in that: the thermocouple wire and the ceramic beads are arranged in the thermocouple protection tube, the working ends of the thermocouple wire and the ceramic beads are arranged at the front end of the head part of the thermocouple protection tube, and the non-working ends of the thermocouple wire and the ceramic beads are connected with a compensation lead in a junction box through a wiring ceramic base and connected with a temperature measuring instrument system.
4. The hot blast temperature thermocouple protection device according to claim 1, characterized in that: the base is vertically welded on the position of a thermocouple mounting hole formed in the upper portion of a metal shell of the hot air main pipeline.
5. The hot blast temperature thermocouple protection device according to claim 4, wherein: the clamping sleeve is fixedly arranged outside the thermocouple protection tube in a sealing mode.
6. The hot blast temperature thermocouple protection device according to claim 1 or 5, characterized in that: the clamping sleeve is connected with the base in a sealing mode through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020542978.1U CN212206404U (en) | 2020-04-14 | 2020-04-14 | Hot air temperature thermocouple protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020542978.1U CN212206404U (en) | 2020-04-14 | 2020-04-14 | Hot air temperature thermocouple protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212206404U true CN212206404U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020542978.1U Active CN212206404U (en) | 2020-04-14 | 2020-04-14 | Hot air temperature thermocouple protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212206404U (en) |
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2020
- 2020-04-14 CN CN202020542978.1U patent/CN212206404U/en active Active
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