CN116837199A - Inner wall buried couple temperature measuring device suitable for small-caliber metal pipe heat treatment process - Google Patents

Inner wall buried couple temperature measuring device suitable for small-caliber metal pipe heat treatment process Download PDF

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Publication number
CN116837199A
CN116837199A CN202210305280.1A CN202210305280A CN116837199A CN 116837199 A CN116837199 A CN 116837199A CN 202210305280 A CN202210305280 A CN 202210305280A CN 116837199 A CN116837199 A CN 116837199A
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CN
China
Prior art keywords
heat treatment
treatment process
measuring device
temperature measuring
small
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210305280.1A
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Chinese (zh)
Inventor
朱健桦
刘刚
吴建峰
温识博
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Baoshan Iron and Steel Co Ltd
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Baoshan Iron and Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baoshan Iron and Steel Co Ltd filed Critical Baoshan Iron and Steel Co Ltd
Priority to CN202210305280.1A priority Critical patent/CN116837199A/en
Publication of CN116837199A publication Critical patent/CN116837199A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D11/00—Process control or regulation for heat treatments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • G01K1/143—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations for measuring surface temperatures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

The invention discloses an inner wall buried couple temperature measuring device suitable for a small-caliber metal pipe heat treatment process, which comprises an extension mechanism and a fixing mechanism; the thermocouple is arranged on the stretching mechanism; the stretching mechanism is connected to the fixing mechanism. The invention can pre-embed thermocouples in the deep part of the inner wall of a small-caliber (especially less than or equal to 70 mm) metal pipe (square pipe, rectangular pipe, round pipe or elliptical pipe, etc.), so as to actually measure the temperature change and the uniformity of the inner wall of the metal pipe in the heat treatment process, so that the heat treatment process and equipment of the small-caliber metal pipe can be optimized to the greatest extent, and finally the high-performance metal pipe can be produced.

Description

Inner wall buried couple temperature measuring device suitable for small-caliber metal pipe heat treatment process
Technical Field
The invention relates to a metal heat treatment technology, in particular to an inner wall buried couple temperature measuring device suitable for a small-caliber metal pipe heat treatment process.
Background
The good heat treatment process can greatly improve the performance of the metal material. For this reason, various companies are optimizing and promoting the heat treatment process based on the current market demand for high strength metal pipes. Heating and cooling are two of the most critical process links. To optimize the process, it is necessary to verify the improved equipment and process (temperature) regime, and therefore it is necessary to pre-embed thermocouples on the metal tubing to measure the real-time temperature variation of the metal tubing under different heat treatment process parameters.
However, for small-caliber (especially less than or equal to 70 mm) metal pipes (square pipes, rectangular pipes, round pipes or oval pipes) with closed circumferential cross sections, the welding heads of the thermocouple spot welding machines cannot extend deep inside the elongated pipes, so that thermocouples cannot be welded on the inner walls of the elongated pipes, and the temperature change and various uniformity conditions of the inner walls of the small-caliber metal pipes in the heat treatment process cannot be measured. At present, no related technology for measuring the temperature of the inner wall of the small-caliber metal pipe exists.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the inner wall buried couple temperature measuring device which is suitable for the heat treatment process of the small-caliber metal pipe, and the device is driven to open in the pipe to be tightly attached to the inner wall or loose through the screwing or unscrewing operation applied to the outer end of the pipe, so that thermocouples can be buried deep in the inner wall of the small-caliber (especially less than or equal to 70 mm) metal pipe (square pipe, rectangular pipe, round pipe or elliptical pipe and the like), and the temperature change and the uniformity of the inner wall of the pipe of the metal pipe in the heat treatment process can be measured, so that the heat treatment process and equipment of the small-caliber metal pipe can be optimized to the greatest extent, and finally the high-performance metal pipe can be produced.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an inner wall buried couple temperature measuring device suitable for a small-caliber metal pipe heat treatment process comprises an extension mechanism and a fixing mechanism;
the thermocouple is arranged on the stretching mechanism;
the stretching mechanism is connected to the fixing mechanism.
Preferably, the stretching mechanism comprises two movable parallelogram structures.
Preferably, the quadrilateral structure is formed by connecting four hinge plates end to end.
Preferably, the hinge plates are connected by the same pin shaft at the connecting positions.
Preferably, the fixing mechanism comprises a guide sleeve and a nut which are arranged on the end part on the same side of the pin shaft in the opposite position, and a bolt penetrating into the guide sleeve and the nut.
Preferably, the pin shaft is sleeved with a sleeve;
the thermocouple is mounted on the sleeve.
Preferably, a washer is sleeved on the bolt, and the spring washer is close to the guide sleeve (the washer is arranged between the nut 3 and the bolt 5 and used for locking the bolt).
Preferably, the fixing mechanism comprises a main body framework;
a through hole is formed in the center of the main body framework;
and a plurality of hanging holes are formed in the inner side surface of the main body framework at equal intervals around the perforation.
Preferably, the stretching mechanism comprises a wing plate, a bolt, a branch Zhang Yatou and a nut;
the tail of the bolt penetrates from the front side surface of the main body framework along the perforation, and the bolt head of the bolt is attached to the front side surface of the main body framework;
the split pressing head and the nut are screwed on the bolt, and the split pressing head is close to the inner side face of the main body framework;
one end of each wing plate is connected with the corresponding hanging holes through pin shafts, and the number of the wing plates corresponds to that of the hanging holes.
The thermocouple is mounted on the other end of the wing plate.
Preferably, the section of the separating pressure head is cylindrical, square or rectangular;
the bolt head of the bolt is provided with a hexagon head or an inner hexagon cylindrical bolt.
The inner wall buried couple temperature measuring device suitable for the heat treatment process of the small-caliber metal pipe can be used for various pipe fittings such as rectangular pipes (square pipes and flat pipes), round pipes, elliptic pipes and the like, and is particularly suitable for the pipe fittings with small caliber. The embedded couple temperature measuring device on the inner wall of the invention is matched with the thermocouple welded on the outer surface of the metal tube, so that the temperature change of each point inside and outside the tube can be measured and compared in the following heat treatment experiment, thereby improving the process and equipment and finally forming the optimal heat treatment process and equipment.
Drawings
FIG. 1 is a schematic perspective view of an embodiment 1 of an inner wall buried couple temperature measuring device of the present invention;
FIG. 2 is a schematic front view of an embodiment 1 of the inner wall buried couple temperature measuring device of the present invention;
FIG. 3 is a schematic perspective view of an embodiment 2 of the inner wall buried couple temperature measuring device of the present invention;
FIG. 4 is a schematic front view of an embodiment 2 of the inner wall buried couple temperature measuring device of the present invention;
FIG. 5 is a schematic view of a main body skeleton in an embodiment 2 of the inner wall buried couple temperature measuring device of the present invention.
Detailed Description
In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
The invention provides an inner wall buried couple temperature measuring device suitable for a small-caliber metal pipe heat treatment process, which comprises an extension mechanism and a fixing mechanism;
thermocouple 100 is mounted on an extension mechanism that is coupled to a fixed mechanism.
Referring to fig. 1 and 2, an embodiment 1 of the inner wall buried couple temperature measuring device of the present invention is schematically shown, and the stretching mechanism includes two movable quadrilateral structures.
The two groups of quadrilateral structures are formed by connecting four hinge plates 1 end to end, and the two groups of parallelogram structures are symmetrically arranged.
And the connecting position of the hinge plates 1 is penetrated and connected by the same pin shaft 2.
The fixing mechanism comprises a guide sleeve 3 and a nut 4 which are arranged on the end part of the same side of the pin shaft 2 at opposite positions (namely, at 2 opposite angular positions), and a bolt 5 penetrating into the guide sleeve 3 (the gasket is arranged between the nut 3 and the bolt 5 and used for locking the bolt, the guide sleeve 3 can also be a nut with the same thread specification as the nut 4) and the nut 4.
The pin shaft 2 is sleeved with a sleeve 6, the sleeve 6 is positioned between the hinged plates 1, and the thermocouple 100 is arranged on the sleeve 6.
The bolt 5 is sleeved with a washer 7, and the washer 7 is attached between the guide sleeve 3 and the bolt head.
The embodiment 1 of the inner wall buried couple temperature measuring device is based on the principle of instability of a parallelogram, and can extend into the deep part of a pipe, so that the thermocouple 100 is directly pressed on the inner wall of the pipe, the thermocouple 100 is pressed on the inner wall of the pipe, and real-time temperature measurement in the whole process of a heat treatment process experiment is realized.
The hinge plate 1 is used to form a parallelogram structure, and the upper and lower sets of thermocouples 100 are wound on 2 diagonal bushings 6 of the quadrangle.
The embodiment 1 of the invention is integrally sent into the deep part of the metal tube, when the bolts 5 are screwed down, the distance between the guide sleeves 3 and the nuts 4 on the other 2 diagonal points of the quadrangle is pulled down, so that the quadrangle is changed, 2 sleeves 6 provided with thermocouples 100 are pushed away, the thermocouples 100 are pressed against the inner wall of the metal tube (as shown by arrows in fig. 2), and the temperature of the inner wall of the metal tube can be measured actually.
After the temperature measurement is completed, the bolts 5 are unscrewed, and after the temperature measurement is slightly pulled, the whole embodiment 1 of the inner wall buried couple temperature measuring device can be taken out from the pipe.
The bolts 5 may take the form of internal hexagonal bolts and are correspondingly tightened and loosened by means of an elongated socket wrench. Hexagonal bolts may also be used to tighten and loosen the nut with an elongated socket wrench.
In the embodiment 1 of the inner wall buried couple temperature measuring device, two groups of thermocouples 100 can be fixed at one time, namely, 2 opposite points are measured; when another two directional points in the measuring tube are needed, another group of mechanisms is needed, namely the stretching mechanism is rotated by 90 degrees to be fixed.
Referring to fig. 1 and 2 again, in the embodiment 1 of the inner wall buried couple temperature measuring device of the present invention, the slender tube is erected first, the whole body is sent into the deep inside of the tube by using the soft rope, and then the bolt 5 is screwed by using the lengthened wrench, which completes the abutting and pressing and fixing of the two groups of thermocouples 100 on the inner wall of the tube. The thermocouple welded on the outer surface of the metal tube is matched, and then the metal tube can be sent into a heat treatment experiment area for heat treatment process and/or equipment verification and optimization experiment. After the experiment is completed, the bolt 5 is unscrewed by using the lengthened socket wrench, and the whole embodiment 1 of the inner wall buried couple temperature measuring device can be taken out for the next continuous use.
The bolts 5 are preferably bolted with torque wrenches to prevent excessive tightening forces from causing the thermocouple 100 to be crushed.
Referring to fig. 3 to 5, an embodiment 2 of the inner wall buried couple temperature measuring device of the present invention is schematically shown, the fixing mechanism includes a main body frame 8, a through hole 9 is formed in a central position of the main body frame 8, a plurality of hanging holes 10 are equidistantly formed on an inner side surface of the main body frame 8 around the through hole 9, and the number of the hanging holes 10 can be 4.
The stretching mechanism comprises a wing plate 11, a bolt 12, a separating pressure head 13 and a nut 14.
The tail of the bolt 12 penetrates from the front side surface of the main body framework 8 along the perforation 9, and the bolt head of the bolt 12 is attached to the front side surface of the main body framework 8.
The separating pressure head 13 and the nut 14 are screwed on the bolt 12 in sequence, and the separating pressure head 13 is close to one side of the inner side surface of the main body framework 8.
One end of the wing plate 11 is connected with the hanging holes 10 through the pin shafts 15, and the number of the wing plates is 4 and corresponds to the number of the hanging holes 10.
A thermocouple 100 is mounted on the other end of the wing plate 11.
In the embodiment 2 of the inner wall buried couple temperature measuring device, a main body framework 8 is taken as a main body, and each hanging hole 10 is connected with each wing plate 11 which can be opened and closed by a pin shaft 15.
The thermocouple 100 for temperature measurement is welded on the wing plate 11, and the cambered surface at the tail end of the wing plate 11 is used for pressing the thermocouple 100 onto the inner wall of the metal pipe in the follow-up process.
The bolt 12 is penetrated into the main body framework 8, the bolt 12 is penetrated into the split pressing head 13 and the spring washer 16, and finally the nut 14 is arranged.
The hex head end of the bolt 12 may be welded with an elongated hex head 17 to allow for tightening or loosening operations with an elongated socket wrench after the entire device is fed deep into the long tube.
The embodiment 2 of the inner wall buried couple temperature measuring device is integrally sent into the deep part of the metal pipe, the upper hexagon head 17 and the nut 14 are respectively paired by using lengthened socket wrenches from two sides of the pipe, when the nut 14 is gradually screwed down, the split pressing head 13 is pushed to open the wing plates 11, and the four thermocouples 100 are simultaneously pressed on the inner wall of the metal pipe. This allows the temperature of the inner wall of the metal tube to be measured.
After the temperature measurement is completed, the nut 14 is unscrewed, and the temperature measuring mechanism can be taken out from the tube after being slightly pulled.
When the split pressing head 13 is a cylinder or a cuboid with a square cross section, the wing plates 11 can be completely synchronously (at the same angle) opened along with the compression of the split pressing head 13, and the split pressing head is suitable for round pipes or square pipes. When the cross section shape of the split pressing head 13 is changed, for example, the cross section of the split pressing head 13 is changed into a rectangular shape, the opening angles of the wing plates 11 are not synchronous along with the pressing of the split pressing head 13, and the thermocouple 100 is suitable for synchronously pressing the thermocouple on the inner wall of an elliptical tube or a flat tube (rectangular tube) with a non-square cross section at one time.
Referring again to fig. 3 to 5, the whole of the embodiment 2 of the inner wall buried thermocouple temperature measuring device of the present invention is fed deep into the tube by an elongated socket wrench, and then the nuts are tightened against the hexagonal head 17 and the nuts 14 by an elongated wrench from both ends, which completes the abutting and pressing of the plurality of sets of thermocouples 100 on the inner wall of the tube. The thermocouple welded on the outer surface of the metal tube is matched, and then the metal tube can be sent into a heat treatment experiment area for heat treatment process and/or equipment verification and optimization experiment. After the experiment is completed, the nut 14 is unscrewed by using the lengthened socket wrench, and the whole embodiment 2 of the inner wall buried couple temperature measuring device can be taken out for the next continuous use.
The nut 14 is preferably tightened with a torque wrench to prevent the thermocouple 100 from being crushed due to excessive tightening force.
It will be appreciated by persons skilled in the art that the above embodiments are provided for illustration only and not for limitation of the invention, and that variations and modifications of the above described embodiments are intended to fall within the scope of the claims of the invention as long as they fall within the true spirit of the invention.

Claims (10)

1. The utility model provides an inner wall buries even temperature measuring device suitable for among small-bore tubular metal resonator heat treatment process which characterized in that: comprises an extension mechanism and a fixing mechanism;
the thermocouple is arranged on the stretching mechanism;
the stretching mechanism is connected to the fixing mechanism.
2. The inner wall buried couple temperature measuring device suitable for the heat treatment process of the small-caliber metal pipe, which is characterized in that: the stretching mechanism comprises two groups of movable parallelogram structures.
3. The inner wall buried couple temperature measuring device suitable for the heat treatment process of the small-caliber metal pipe, which is characterized in that: the parallelogram structure is formed by connecting four hinged plates end to end.
4. The inner wall buried couple temperature measuring device suitable for the heat treatment process of the small-caliber metal pipe according to claim 3, wherein the device is characterized in that: the hinge plates are connected by the same pin shaft at the connecting positions.
5. The inner wall buried couple temperature measuring device suitable for the heat treatment process of the small-caliber metal pipe, which is disclosed in claim 4, is characterized in that: the fixing mechanism comprises a guide sleeve and a nut which are arranged on the end part on the same side relative to the pin shaft, and a bolt penetrating into the guide sleeve and the nut.
6. The inner wall buried couple temperature measuring device suitable for the heat treatment process of the small-caliber metal pipe, which is disclosed in claim 4, is characterized in that: a sleeve is sleeved on the pin shaft;
the thermocouple is mounted on the sleeve.
7. The inner wall buried couple temperature measuring device suitable for the heat treatment process of the small-caliber metal pipe, which is disclosed in claim 5, is characterized in that: and a gasket is sleeved on the bolt, and the gasket is close to the guide sleeve.
8. The inner wall buried couple temperature measuring device suitable for the heat treatment process of the small-caliber metal pipe, which is characterized in that: the fixing mechanism comprises a main body framework;
a through hole is formed in the center of the main body framework;
and a plurality of hanging holes are formed in the inner side surface of the main body framework at equal intervals around the perforation.
9. The inner wall buried couple temperature measuring device suitable for the heat treatment process of the small-caliber metal pipe, which is disclosed in claim 8, is characterized in that: the stretching mechanism comprises a wing plate, a bolt, a branch Zhang Yatou and a nut;
the tail of the bolt penetrates from the front side surface of the main body framework along the perforation, and the bolt head of the bolt is attached to the front side surface of the main body framework;
the split pressing head and the nut are screwed on the bolt, and the split pressing head is close to the inner side face of the main body framework;
one end of each wing plate is connected with the corresponding hanging holes through pin shafts, and the number of the wing plates corresponds to that of the hanging holes.
The thermocouple is mounted on the other end of the wing plate.
10. The inner wall buried couple temperature measuring device suitable for the heat treatment process of the small-caliber metal pipe, which is characterized in that: the section of the split pressing head is cylindrical, square or rectangular;
the bolt head of the bolt is provided with a hexagon head or an inner hexagon cylindrical bolt.
CN202210305280.1A 2022-03-25 2022-03-25 Inner wall buried couple temperature measuring device suitable for small-caliber metal pipe heat treatment process Pending CN116837199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210305280.1A CN116837199A (en) 2022-03-25 2022-03-25 Inner wall buried couple temperature measuring device suitable for small-caliber metal pipe heat treatment process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210305280.1A CN116837199A (en) 2022-03-25 2022-03-25 Inner wall buried couple temperature measuring device suitable for small-caliber metal pipe heat treatment process

Publications (1)

Publication Number Publication Date
CN116837199A true CN116837199A (en) 2023-10-03

Family

ID=88169292

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210305280.1A Pending CN116837199A (en) 2022-03-25 2022-03-25 Inner wall buried couple temperature measuring device suitable for small-caliber metal pipe heat treatment process

Country Status (1)

Country Link
CN (1) CN116837199A (en)

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