Thermocouple adjusting device of annealing furnace

Abstract

The utility model discloses a thermocouple adjusting device for an annealing furnace, which comprises a pneumatic adjusting valve and a thermocouple, and one end of a push rod of the pneumatic adjusting valve is movably connected with an adjusting connecting rod used for adjusting the thermocouple to move up and down. When the pneumatic connecting rod stretches out and draws back to drive the right movable connecting rod to perform angle inclined movement in the strip-shaped limiting groove, the right movable connecting rod pulls the right end of the adjusting connecting rod to move downwards, the other end of the adjusting connecting rod moves upwards, and the left movable connecting rod drives the flange and the thermocouple in the movable sleeve to move upwards for adjustment. On the contrary, the adjusting connecting rod pushes the thermocouple to move downwards to the annealing furnace through the left movable connecting rod for adjusting and moving, so that the thermocouple can be adjusted in different measuring lengths according to different steel types in the annealing furnace through the cooperation of the connecting rod and the pneumatic adjusting valve and the thermocouple, and the measuring temperature is adjusted at the same time; stainless steel is heated more accurately in the annealing furnace, and the strip annealing requirement meets the standard.

Description

Technical Field

[0001] The utility model belongs to the technical field of annealing furnace thermocouples, and in particular relates to an annealing furnace thermocouple regulating device. Background Art

[0002] During the hot processing of steel, furnace temperature is the most important thermal parameter, which directly affects the process. We always hope that the change of furnace temperature is always in the best and reasonable state, but it is often impossible to achieve this goal manually. Therefore, thermometers are generally used to detect the furnace temperature and instruments are used to display the furnace temperature, so as to guide people's operation and realize automatic adjustment, so as to achieve the purpose of increasing production, improving quality and reducing heat consumption. In the heating furnace industry, the most widely used thermometer is thermocouple; and the thermocouple installed in the furnace is affected by various aspects of heat transfer, and the actual measured temperature is a comprehensive temperature. In order to make the measured data as close as possible to the desired temperature, efforts should be made to reduce heat losses such as conduction and radiation. This requires us to design the installation structure of the thermocouple. In addition to the characteristics of easy installation and convenient maintenance, we should also ensure good sealing performance.

[0003] To this end, a thermocouple installation structure for an industrial furnace with the announcement number "CN205642055U" is disclosed, comprising a cast shell brick, a cover plate, a thermocouple, a sealing fiber, and a thermal insulation fiber. The cast shell brick is in the shape of a square pyramid, a groove is arranged around the waist of the cast shell brick, a vertical through hole is arranged at the center of the cast shell brick, the vertical through hole runs through the entire cast shell brick, a sealing groove is arranged on the cast shell brick outside the upper end of the vertical through hole, the thermocouple is inserted into the vertical through hole, the sealing fiber is filled in the sealing groove outside the thermocouple, a through hole is arranged in the middle of the cover plate, the cover plate is fixed to the upper end of the cast shell brick, the sealing fiber is pressed, and the thermocouple is inserted into the through hole of the cover plate; the cast shell brick is cast in the corresponding furnace roof, and a thermal insulation fiber layer is arranged above and around the cover plate, so that the installation structure of the thermocouple is easy to install and has good sealing performance.

[0004] However, for the above-mentioned thermocouple installation structure for industrial furnaces, although the cover plate is covered and screwed in with nuts to tighten, and then the thermocouple is inserted to a fixed position, there are still the following obvious defects during use: the above-mentioned thermocouple installation distance is fixed on the annealing furnace, and the thermocouple cannot be fixed to measure different lengths of different steel types in the annealing furnace. Therefore, the thermocouple cannot measure the heating temperature of different stainless steels in the annealing furnace. Utility Model Content

[0005] The utility model aims to provide an annealing furnace thermocouple regulating device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an annealing furnace thermocouple adjustment device, comprising a pneumatic control valve and a thermocouple, wherein one end of the push rod of the pneumatic control valve is movably connected with an adjustment connecting rod for adjusting the thermocouple to move up and down, and the thermocouple is sleeved with a movable sleeve through the inner hole of a flange, characterized in that: the middle part of the adjustment connecting rod is connected with a support rod for horizontally supporting the adjustment connecting rod through a pin shaft, and the two ends of the adjustment connecting rod are movably connected with a right movable connecting rod and a left movable connecting rod for driving the thermocouple to lift and lower through a pin shaft, one side of the support rod is extended outwardly to be provided with a positioning cross plate for positioning and moving the right movable connecting rod, the bottom end of the support rod is fixed with a base plate installed on one side of the bottom of the pneumatic control valve, and the flange is sleeved and fixed on the outside of the movable sleeve.

[0007] Preferably, a connecting through hole is penetrated on one side of the end of the flange, and the connecting through hole is movably connected to the left movable connecting rod through a pin shaft, so that the left movable connecting rod can be connected to the flange, which is beneficial to the lifting and lowering adjustment of the thermocouple in the movable sleeve to different heights.

[0008] Preferably, a strip-shaped limit groove is laterally provided on the surface of the positioning horizontal plate, and the bottom end of the right movable link (7) is slidably arranged in the strip-shaped limit groove through a limit pin, which is beneficial to the angular movement of the right movable link, and pulls one end of the adjustment link to move downward or upward.

[0009] Preferably, the pneumatic regulating valve includes a valve housing, an elastic pneumatic membrane is horizontally fixed at the inner center position of the valve housing, an air inlet pipe and an air outlet pipe are respectively provided on both sides of the valve housing, and the middle part of the elastic pneumatic membrane is connected to a pneumatic connecting rod that penetrates to the outside of the valve housing, so that gas can be input into the valve housing, allowing the elastic pneumatic membrane to push the pneumatic connecting rod to move telescopically.

[0010] Preferably, a stabilizing frame is fixed to one side of the valve housing, the pneumatic connecting rod is arranged on the inner side of the stabilizing frame and movably extends to the outside of one side of the stabilizing frame, and one end of the extended portion of the pneumatic connecting rod is movably connected to the outer side of the bottom end of the right movable connecting rod through a pin shaft, so that the pneumatic connecting rod can maintain linear stability while telescopically moving, and is conducive to pulling one end of the adjusting connecting rod to move the movable sleeve up and down.

[0011] Preferably, an action execution block is provided in the middle of the pneumatic connecting rod in the stabilizing frame, and a connecting rod pneumatic scale plate is provided at the position of the action execution block corresponding to the stabilizing frame, so as to realize the telescopic adjustment of the thermocouple in the annealing furnace according to different stainless steel heating, so that the measured temperature is more accurate.

[0012] Compared with the prior art, the technical effects and advantages of the utility model are as follows: the thermocouple adjusting device for the annealing furnace is connected through the movable connection of the right movable connecting rod of the pneumatic connecting rod in the pneumatic regulating valve, and the left movable connecting rod on the adjusting connecting rod is movably connected with one side of the flange end of the movable sleeve, and at the same time, the support rod arranged on the movable support in the middle of the adjusting connecting rod is fixed on the base plate. When the pneumatic connecting rod is telescopically driven to drive the right movable connecting rod to move at an angle in the strip limit groove, the right movable connecting rod is moved downward in angle, and the other end of the adjusting connecting rod is moved upward to drive the flange and the thermocouple in the movable sleeve to move upward for adjustment through the left movable connecting rod. Conversely, the adjusting connecting rod pushes the thermocouple downward to the annealing furnace for adjustment through the left movable connecting rod, so that the thermocouple can be adjusted to different measuring lengths according to different steel grades in the annealing furnace through the use of the connecting rod and the pneumatic regulating valve in combination with the thermocouple, and the measuring temperature is also adjusted at the same time, so that the stainless steel can be heated more accurately in the annealing furnace, and the annealing requirements of the plate and strip meet the standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a left-side structural schematic diagram of the utility model.

[0015] In the figure: 1. pneumatic control valve; 2. thermocouple; 3. adjusting connecting rod; 4. flange; 5. movable sleeve; 6. support rod; 7. movable connecting rod; 8. positioning cross plate; 9. base plate; 10. connecting through hole; 11. strip limit groove; 12. valve housing; 13. elastic pneumatic membrane; 14. air inlet pipe; 15. air outlet pipe; 16. pneumatic connecting rod; 17. stabilizing frame; 18. action execution block; 19. connecting rod pneumatic scale plate; 20. left movable connecting rod. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-2The utility model provides a technical solution: a thermocouple regulating device for an annealing furnace, comprising a pneumatic regulating valve 1 and a thermocouple 2. The pneumatic regulating valve 1 is fixed near the position where the thermocouple 2 is installed. One end of the push rod of the pneumatic regulating valve 1 is movably connected with an adjusting connecting rod 3 for adjusting the thermocouple 2 to move up and down. The adjusting connecting rod 3 is pulled and pushed by the left movable connecting rod 7 and the movable sleeve 5 to adjust the movement by alternating lifting and lowering at both ends, so that the thermocouple 2 can be adjusted according to different stainless steels in the annealing furnace, so that the annealing heating temperature of different stainless steels in the annealing furnace can be measured more accurately. The thermocouple 2 is sleeved with an movable sleeve 5 through the inner hole of the flange 4. The connecting end of the thermocouple 2 is fixed inside the movable sleeve 5, and the other end of the thermocouple 2 is inserted into the annealing furnace to measure the temperature. The thermocouple 2 is movably arranged on the hole where the thermocouple 2 is installed on the annealing furnace through the movable sleeve 5. The middle part of the adjusting connecting rod 3 is connected with a pin shaft for horizontally supporting the adjusting connecting rod 3. The top of the support rod 6 is connected to the middle part of the adjusting link 3, which can ensure the stable up and down movement of the two ends of the adjusting link 3 to adjust the thermocouple 2. The two ends of the adjusting link 3 are movably connected with a right movable link 7 and a left movable link 20 for driving the thermocouple 2 to lift and adjust the thermocouple 2 through a pin shaft, so that the right movable link 7 pulls one end of the adjusting link 3 to move downward, and the other end of the adjusting link 3 pulls the movable sleeve 5 through the left movable link 20 to adjust the up and down movement. One side of the support rod 6 extends outward and is provided with a positioning cross plate 8 for positioning and moving the right movable link 7, which can make one end of the right movable link 7 move angularly on the positioning cross plate 8, and the bottom end of the support rod 6 is fixed on a base plate 9 installed on one side of the bottom of the pneumatic regulating valve 1, which can make the support rod 6 play a stable support for the middle part of the adjusting link 3, and the flange 4 is sleeved and fixed on the outside of the movable sleeve 5, which is beneficial to the lifting and lowering adjustment of the movable sleeve 5 and the thermocouple 2, and can measure the temperatures of different stainless steel annealing heating.

[0018] A connecting through hole 10 is penetrated on one side of the end of the flange 4, and the connecting through hole 10 helps to assist in the lifting, upward movement and downward pushing of the flange 4, and facilitates the connection between one end of the left movable link 20 and the connecting through hole 10. The connecting through hole 10 and the left movable link 20 are movably connected through a pin shaft, so that the left movable link 20 drives the movable sleeve 5 and the thermocouple 2 to move up and down through the flange 4, and measures the heating temperature of different stainless steel annealing in the annealing furnace, so that the measured temperature value is more accurate. A strip limit groove 11 is laterally provided on the surface of the positioning cross plate 8. The strip limit groove 11 is used for limiting the linear sliding of one end of the right movable link 7 through the limit pin shaft during movement. The bottom end of the right movable link 7 is slidably arranged in the strip limit groove 11 through the limit pin, which can make the adjustment link 3 more stable in the alternating up and down movement at both ends, and ensure the vertical up and down adjustment movement of the thermocouple 2.

[0019] The pneumatic regulating valve 1 comprises a valve housing 12, an elastic pneumatic membrane 13 is horizontally fixed at the inner center of the valve housing 12, the elastic pneumatic membrane 13 can change the telescopic stroke of the pneumatic connecting rod 16 according to the size of the air pressure input into the valve housing 12, an air inlet pipe 14 and an air outlet pipe 15 are respectively arranged on both sides of the valve housing 12, a pneumatic connecting rod 16 penetrating to one side of the outer side of the valve housing 12 is connected to the middle of the elastic pneumatic membrane 13, a stabilizing frame 17 is fixed to one side of the valve housing 12, the pneumatic connecting rod 16 is arranged on the inner side of the stabilizing frame 17 and movably penetrates to one side of the outer side of the stabilizing frame 17, and the pneumatic connecting rod 16 One end of the extended portion of 6 is movably connected to the outer side of the bottom end of the right movable connecting rod 7 through a pin shaft, an action execution block 18 is provided in the middle of the pneumatic connecting rod 16 in the stable frame 17, and a connecting rod pneumatic scale plate 19 is provided at the position of the action execution block 18 corresponding to the stable frame 17, and a pneumatic regulating valve 1 is installed on the side of the flange 4 installation of the thermocouple 2, and the telescopic range of the pneumatic connecting rod 16 in the pneumatic regulating valve 1 is 0 to 10 cm, and the regulating signal of the pneumatic regulating valve 1 is 4 to 20 mA, so that the distance of the thermocouple 2 extending into the annealing furnace can be automatically adjusted according to different steel grades.

[0020] Specifically, when in use, first install the thermocouple 2 inside the movable sleeve 5, and the movable sleeve 5 is inserted into the hole where the thermocouple 2 is installed on the annealing furnace, so that one end of the thermocouple 2 enters the interior of the annealing furnace, and at the same time, the pneumatic regulating valve 1 is fixed to the outer wall of the annealing furnace through the base plate 9, and the air inlet pipe 14 of the pneumatic regulating valve 1 is connected to the external air pump that provides the air source, and at the same time, the air outlet pipe 15 is connected to the recovery inlet end of the air pump, and after the gas is introduced into the valve housing 12, the elastic pneumatic membrane 13 is moved to one side by the air pressure, so that the elastic pneumatic membrane 13 The pneumatic connecting rod 16 is pushed to extend outward, and the extension of the pneumatic connecting rod 16 pushes the tilt angle of one end of the right movable connecting rod 7 to move in the strip limit groove 11, and the other end of the right movable connecting rod 7 moves downward to pull one end of the adjusting connecting rod 3 to move downward. At this time, the other end of the adjusting connecting rod 3 moves upward, and the left movable connecting rod 20 connected to one end thereof moves upward and pulls the flange 4 upward. The upward adjustment of the flange 4 drives the movable sleeve 5 and the thermocouple 2 inside it to move upward, so that the thermocouple 2 is away from the fire source a of the furnace fire. The above movement adjustment process (such as Figure 2The right movable link 7 is pulled back on the positioning cross plate 8 when the pneumatic connecting rod 16 is retracted, and the back movement of the lower end of the right movable link 7 causes the upper end angle to move upward, pushing one end of the adjusting link 3 to move upward, and the other end of the adjusting link 3 moves downward to allow the left movable link 20 to push the flange 4 downward for adjustment, so that the movable sleeve 5 drives the thermocouple 2 inside it to extend into the annealing furnace for adjustment, so that one end of the thermocouple can be close to the fire source in the annealing furnace for temperature measurement. Through the above-mentioned operation process, the thermocouple 2 can be adjusted to different measuring lengths according to different steel grades in the annealing furnace, and the measuring temperature is also adjusted at the same time, so that the stainless steel can be heated more accurately in the annealing furnace, and the annealing requirements of the plate and strip meet the standards.

[0021] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thermocouple regulating device for an annealing furnace, comprising a pneumatic regulating valve (1) and a thermocouple (2), wherein one end of a push rod of the pneumatic regulating valve (1) is movably connected to an regulating connecting rod (3) for adjusting the thermocouple (2) to move up and down, and the thermocouple (2) is sleeved with a movable sleeve (5) through the inner hole of a flange (4), characterized in that: The middle part of the adjusting link (3) is connected to a support rod (6) for horizontally supporting the adjusting link (3) via a pin shaft, and the two ends of the adjusting link (3) are movably connected to a right movable link (7) and a left movable link (20) for driving the thermocouple (2) to lift and lower through a pin shaft. A positioning horizontal plate (8) is provided on one side of the support rod (6) extending outwards for positioning and moving the right movable link (7), and the bottom end of the support rod (6) is fixed to a base plate (9) installed on one side of the bottom of the pneumatic regulating valve (1), and the flange (4) is sleeved and fixed on the outside of the movable sleeve (5).

2. The annealing furnace thermocouple adjustment device according to claim 1, characterized in that: A connecting through hole (10) is provided on one side of the end of the flange (4), and the connecting through hole (10) is movably connected to the left movable connecting rod (20) via a pin shaft.

3. The annealing furnace thermocouple adjustment device according to claim 1, characterized in that: A strip-shaped limiting groove (11) is transversely arranged on the surface of the positioning horizontal plate (8), and the bottom end of the right movable connecting rod (7) is slidably arranged in the strip-shaped limiting groove (11) via a limiting pin.

4. The annealing furnace thermocouple adjustment device according to claim 1, characterized in that: The pneumatic regulating valve (1) comprises a valve housing (12), an elastic pneumatic membrane (13) being horizontally fixed at the inner center position of the valve housing (12), an air inlet pipe (14) and an air outlet pipe (15) being respectively arranged on both sides of the valve housing (12), and a pneumatic connecting rod (16) penetrating to one side of the outer side of the valve housing (12) being connected to the middle of the elastic pneumatic membrane (13).

5. The annealing furnace thermocouple adjustment device according to claim 4, characterized in that: A stabilizing frame (17) is fixed to one side of the valve housing (12), the pneumatic connecting rod (16) is arranged on the inner side of the stabilizing frame (17) and movably penetrates to the outside of one side of the stabilizing frame (17), and one end of the extended portion of the pneumatic connecting rod (16) is movably connected to the outer side of the bottom end of the right movable connecting rod (7) through a pin shaft.

6. The annealing furnace thermocouple adjustment device according to claim 5, characterized in that: An action execution block (18) is provided in the middle of the pneumatic connecting rod (16) in the stabilizing frame (17), and a connecting rod pneumatic scale plate (19) is provided at a position of the action execution block (18) corresponding to the stabilizing frame (17).

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