Multi-point air injection temperature measuring instrument for continuous casting secondary cooling area

Abstract

The invention discloses a multipoint air injection temperature measuring instrument for a continuous casting secondary cooling area, and relates to the technical field of metal casting temperature measuring devices. The device comprises an outer shell, the outer shell comprises a shell sleeve, conical shells and guide vanes, the inner side of the outlet end of the shell sleeve is a conical face, the conical shells which are coaxially distributed are installed in the conical face, the conical face and the conical shells are connected through the guide vanes, and a connecting base is arranged at the end, away from an outlet of the outer shell, of each conical shell; the end face of the connecting base is connected with a second pipe body, the outer side of the second pipe body is sleeved with a rotating part, the rotating part and the second pipe body are both located in the outer shell, an air inlet channel is formed between the outer shell and the rotating part, and a heat dissipation channel is formed between the rotating part and the second pipe body; the connecting end of a temperature measuring head installed in the conical shell sequentially penetrates through the second pipe body and the base body to extend outwards. Gas in the gas inlet pipe passes through the gas supply pipeline and is discharged through the outlet end of the shell sleeve, dust and mist removal of the temperature measuring end of the temperature measuring head are completed, and the detection accuracy is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of metal casting temperature measuring devices, and in particular relates to a multi-point air-jet temperature measuring instrument for a secondary cooling zone of continuous casting. Background Art

[0002] In the continuous casting process of steel slabs in the metallurgical industry, secondary cooling determines the cooling effect and internal solidification behavior of the ingot during the solidification process, and is a key link in the internal quality control of the ingot. Therefore, in the continuous casting process, it is very important to control the ingot in the best thermal state through online temperature measurement and monitoring to ensure the quality of the ingot.

[0003] The difficulty of measuring the surface temperature of continuous casting slabs lies in the following: the slab is in a state of continuous motion, which requires the temperature meter to have a fast dynamic response time; since the surface of the continuous casting slab is covered with iron oxide scale, water film, and water vapor in the space, it is difficult to measure accurately. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-point air jet temperature measuring instrument for the secondary cooling zone of continuous casting, which can remove dust and mist from the temperature measuring end of the temperature measuring head by passing the gas in the air inlet pipe through the air supply pipe and being discharged through the outlet end of the shell, thereby ensuring the accuracy of the detection and solving the related problems raised in the background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention discloses a multi-point air jet temperature measuring instrument for a second cooling zone of a continuous casting, comprising an outer shell, the outer shell comprising a shell sleeve, a conical shell and guide vanes, the inner side of the outlet end of the shell sleeve is a conical surface, a conical shell distributed coaxially is installed in the conical surface, the conical surface and the conical shell are connected by guide vanes, and a connecting seat is provided at the end of the conical shell away from the outlet of the outer shell; the end face of the connecting seat is connected with a pipe body 2, the outer side of the pipe body 2 is sleeved with a rotating part, the rotating part and the pipe body 2 are both located in the outer shell, an air inlet channel is formed between the outer shell and the rotating part, and a heat dissipation channel is formed between the rotating part and the pipe body 2; the port formed by the outer shell, the rotating part and the pipe body 2 is cooperatively installed on the seat body, an air inlet pipe connected with the air inlet channel is installed on the seat body, and a liquid discharge pipe and a liquid inlet pipe connected with the heat dissipation channel are also provided on the seat body; the connecting end of the temperature measuring head installed in the conical shell passes through the pipe body 2 and the seat body in sequence and extends outward.

[0006] Furthermore, the side of the conical surface close to the shell sleeve outlet end is the small end; the side of the conical shell close to the shell sleeve outlet end is the small end, and the gap formed between the conical surface and the conical shell gradually decreases toward the side close to the outlet end.

[0007] Furthermore, a through groove is formed at the end of the tube body 2 near the connecting seat, and the tube body 2 is located on the outside of the temperature measuring head; a heat dissipation channel 1 is formed between the tube body 2 and the temperature measuring head, and the heat dissipation channel 1 is connected to the liquid inlet pipe, and a heat dissipation channel 2 is formed between the rotating part and the tube body 2, and the heat dissipation channel 2 is connected to the liquid discharge pipe, and the heat dissipation channel 1 and the heat dissipation channel 2 are connected through the through groove.

[0008] Furthermore, the rotating part includes a tube body 1 and spiral blades, and the inner side and the outer side of the tube body 1 are both provided with spiral blades; the rotation directions of the two different spiral blades are different.

[0009] Furthermore, the end of the rotating part is mounted on the outer side of the connecting seat through a bearing seal.

[0010] Furthermore, the end surface of the seat body is provided with a plurality of stepped holes; the ports of the rotating part and the second tube body located outside the outer shell are increased in sequence.

[0011] Furthermore, a temperature measuring head is installed in the conical shell, and a gap between the temperature measuring head and the conical shell bracket is filled with sealant.

[0012] Furthermore, a plurality of threaded seats are evenly distributed on the bottom surface of the seat body.

[0013] Furthermore, the outer shell is made of ceramic material.

[0014] The present invention has the following beneficial effects: 1. In the present invention, the air inlet pipe is connected to the air supply pipe, and the liquid inlet pipe is connected to the liquid supply pipe. External cooling water enters the heat dissipation channel through the provided liquid inlet pipe, and is discharged again through the provided liquid discharge pipe, thereby completing the heat dissipation of the surface of the temperature measuring head and isolating the external heat from being transferred to the temperature measuring head. In addition, the gas in the air inlet pipe is discharged through the outlet end of the shell through the air supply pipe, completing the dust and mist removal of the temperature measuring end of the temperature measuring head, thereby ensuring the accuracy of the detection.

[0015] 2. The gap formed between the conical surface and the conical shell of the present invention gradually decreases toward the side close to the outlet end, and the volume of the air gradually decreases when passing through the outlet end, thereby increasing the flow rate of the passing air and improving the effect of blowing away dust and water vapor at the shell detection end; in addition, the exhausted gas moves along the spiral guide blades, and the gas diffuses outward in a ripple shape when discharged, thereby improving the cleaning effect.

[0016] 3. The gas provided in the present invention passes through the spiral blades provided on the outer side of the tube body 1 in the air intake channel, so that the gas drives the tube body 1 to rotate. At the same time, the rotation directions of the two different spiral blades are the same. The rotating spiral blades drive the liquid in the heat dissipation channel 2 formed by the rotating part and the tube body 2 to move outward, thereby extracting cooling water and discharging it through the heat dissipation channel 2, and the external cooling water enters the heat dissipation channel 1, thereby reducing the use of power components.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the outer shell structure of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the outer shell of the present invention; Figure 5 It is a schematic diagram of the internal structure of the present invention; Figure 6 It is a schematic diagram of the seat structure of the present invention; In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Outer shell; 11. Shell; 111. Conical surface; 12. Conical shell; 121. Connecting seat; 13. Guide vane; 2. Seat body; 21. Threaded seat; 3. Inlet pipe; 4. Drain pipe; 5. Inlet pipe; 6. Rotating part; 61. Tube body 1; 62. Spiral blade; 7. Tube body 2; 8. Bearing; 9. Temperature measuring head. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] See also Figure 1-6 As shown, the present invention is a multi-point jet temperature measuring instrument for the secondary cooling zone of continuous casting, comprising an outer shell 1, the outer shell 1 comprising a shell sleeve 11, a conical shell 12 and a guide vane 13, the inner side of the outlet end of the shell sleeve 11 is a conical surface 111, a conical shell 12 coaxially distributed is installed in the conical surface 111, the conical surface 111 and the conical shell 12 are connected by the guide vane 13, and the end of the conical shell 12 away from the outlet of the outer shell 1 is provided with a connecting seat 121; the end surface of the connecting seat 121 is connected to the pipe body 7, and the outer surface of the pipe body 7 is provided with a connecting seat 121; A rotating part 6 is sleeved on the side, and the rotating part 6 and the second tube body 7 are both located in the outer shell 1. An air intake channel is formed between the outer shell 1 and the rotating part 6, and a heat dissipation channel is formed between the rotating part 6 and the second tube body 7; the port formed by the outer shell 1, the rotating part 6 and the second tube body 7 is cooperatively installed on the base body 2, and an air intake pipe 3 connected with the air intake channel is installed on the base body 2. The base body 2 is also provided with a drain pipe 4 and a liquid inlet pipe 5 connected with the heat dissipation channel; the connecting end of the temperature measuring head 9 installed in the conical shell 12 sequentially passes through the second tube body 7 and the base body 2 and extends outward.

[0023] The air inlet pipe 3 is connected to the air supply pipe, and the liquid inlet pipe 5 is connected to the liquid supply pipe. The external cooling water enters the heat dissipation channel through the provided liquid inlet pipe 5, and is discharged again through the provided liquid discharge pipe 4, thereby completing the heat dissipation of the surface of the temperature measuring head 9, and at the same time isolating the external heat from being transferred to the temperature measuring head 9. In addition, the gas in the air inlet pipe 3 is discharged through the outlet end of the shell 11 through the air supply pipe, completing the dust and mist removal of the temperature measuring end of the temperature measuring head 9 to ensure the accuracy of the detection.

[0024] The side of the conical surface 111 close to the outlet end of the shell sleeve 11 is the small end; the side of the conical shell 12 close to the outlet end of the shell sleeve 11 is the small end, and the gap formed between the conical surface 111 and the conical shell 12 gradually decreases toward the side close to the outlet end.

[0025] The gap formed between the conical surface 111 and the conical shell 12 gradually decreases toward the side close to the outlet end, and the volume of the air gradually decreases when passing through the outlet end, thereby increasing the air flow rate and improving the effect of blowing away dust and water vapor at the detection end of the shell 11; in addition, the exhausted gas moves along the spiral guide blades 13, and the gas diffuses outward in a ripple shape when discharged, thereby improving the cleaning effect.

[0026] A through groove is formed at the end of the tube body 2 7 near the connecting seat 121, and the tube body 2 7 is located on the outside of the temperature measuring head 9; a heat dissipation channel 1 is formed between the tube body 2 7 and the temperature measuring head 9, and the heat dissipation channel 1 is connected to the liquid inlet pipe 5; a heat dissipation channel 2 is formed between the rotating part 6 and the tube body 2 7, and the heat dissipation channel 2 is connected to the liquid discharge pipe 4, and the heat dissipation channel 1 and the heat dissipation channel 2 are connected through the through groove.

[0027] The rotating part 6 includes a tube body 61 and spiral blades 62. The spiral blades 62 are arranged on the inner side and the outer side of the tube body 61. The two different spiral blades 62 have the same rotation direction.

[0028] The gas passes through the spiral blades 62 provided on the outside of the tube body 1 61 in the air intake channel, so that the gas drives the tube body 1 61 to rotate. At the same time, the rotation directions of the two different spiral blades 62 are different. The rotating spiral blades 62 push the liquid in the heat dissipation channel 2 formed by the rotating part 6 and the tube body 2 7 to move outward, thereby extracting cooling water and discharging it through the heat dissipation channel 2, and the external cooling water enters the heat dissipation channel 1, thereby reducing the use of power components.

[0029] The end of the rotating part 6 is sealed and installed on the outside of the connecting seat 121 through the bearing 8; the end face of the seat body 2 is provided with a plurality of stepped holes; the ports of the rotating part 6 and the tube body 2 7 located on the outside of the outer shell 1 are successively increased and matched and installed in the stepped holes.

[0030] The seat body 2 may also be provided with a plurality of step holes, so that a temperature measuring device consisting of a plurality of sets of outer shells 1 , rotating parts 6 , tube bodies 7 and temperature measuring heads 9 can be installed on the seat body 2 .

[0031] A temperature measuring head 9 is installed in the conical shell 12, and the gap between the temperature measuring head 9 and the bracket of the conical shell 12 is filled with sealant. The temperature measuring head 9 is a high-temperature infrared thermometer.

[0032] The bottom surface of the seat body 2 is evenly distributed with a plurality of threaded seats 21 to facilitate the fixed installation of the seat body 2. The outer shell 1 is made of ceramic material.

[0033] When in use, the air inlet pipe 3 is connected to the air supply pipe, and the liquid inlet pipe 5 is connected to the liquid supply pipe. The external cooling water enters the heat dissipation channel through the provided liquid inlet pipe 5, and is discharged again through the provided liquid discharge pipe 4, thereby completing the heat dissipation of the surface of the temperature measuring head 9, while isolating the external heat from being transferred to the temperature measuring head 9. In addition, the gas in the air inlet pipe 3 is discharged through the outlet end of the shell 11 through the air supply pipe, completing the dust and mist removal of the temperature measuring end of the temperature measuring head 9 to ensure the accuracy of the detection.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-point air jet temperature measuring instrument for a continuous casting secondary cooling zone, comprising an outer shell (1), characterized in that: The outer shell (1) comprises a shell sleeve (11), a conical shell (12) and a guide vane (13); the inner side of the outlet end of the shell sleeve (11) is a conical surface (111); a conical shell (12) coaxially distributed is installed in the conical surface (111); the conical surface (111) and the conical shell (12) are connected via the guide vane (13); and a connecting seat (121) is provided at the end of the conical shell (12) away from the outlet of the outer shell (1); The end surface of the connecting seat (121) is connected to the second tube body (7), the outer side of the second tube body (7) is sleeved with a rotating part (6), the rotating part (6) and the second tube body (7) are both located in the outer shell (1), an air intake channel is formed between the outer shell (1) and the rotating part (6), and a heat dissipation channel is formed between the rotating part (6) and the second tube body (7); The port formed by the outer shell (1), the rotating part (6) and the second tube body (7) is cooperatively mounted on the base body (2); an air intake pipe (3) connected to the air intake channel is mounted on the base body (2); and a liquid discharge pipe (4) and a liquid inlet pipe (5) connected to the heat dissipation channel are also provided on the base body (2); The connection end of the temperature measuring head (9) installed in the conical shell (12) passes through the second tube body (7) and the seat body (2) in sequence and extends outward.

2. The multi-point air jet temperature measuring instrument for the secondary cooling zone of continuous casting according to claim 1, characterized in that: The side of the conical surface (111) close to the outlet end of the shell (11) is a small end; The side of the conical shell (12) close to the outlet end of the shell sleeve (11) is a small end, and the gap formed between the conical surface (111) and the conical shell (12) gradually decreases towards the side close to the outlet end.

3. The multi-point air jet temperature measuring instrument for the secondary cooling zone of continuous casting according to claim 1, characterized in that: The end of the second tube body (7) close to the connecting seat (121) is provided with a through groove, and the second tube body (7) is located outside the temperature measuring head (9); A heat dissipation channel 1 is formed between the second tube body (7) and the temperature measuring head (9), and the heat dissipation channel 1 is connected to the liquid inlet pipe (5). A heat dissipation channel 2 is formed between the rotating part (6) and the second tube body (7), and the heat dissipation channel 2 is connected to the liquid discharge pipe (4). The heat dissipation channel 1 and the heat dissipation channel 2 are connected via a through groove.

4. The multi-point air jet temperature measuring instrument for the secondary cooling zone of continuous casting according to claim 1, characterized in that: The rotating part (6) comprises a tube body (61) and spiral blades (62), and the spiral blades (62) are provided on the inner side and the outer side of the tube body (61); The two different spiral blades (62) have different rotation directions.

5. The multi-point air-jet temperature measuring instrument for the secondary cooling zone of continuous casting according to claim 1, characterized in that: The end of the rotating part (6) is sealed and mounted on the outside of the connecting seat (121) via a bearing (8).

6. The multi-point air jet temperature measuring instrument for the secondary cooling zone of continuous casting according to claim 1, characterized in that: The end surface of the seat body (2) is provided with a plurality of stepped holes; The ports of the rotating part (6) and the second tube body (7) located outside the outer shell (1) are increased in size in sequence.

7. The multi-point air jet temperature measuring instrument for the secondary cooling zone of continuous casting according to claim 1, characterized in that: A temperature measuring head (9) is installed in the conical shell (12), and a gap between the temperature measuring head (9) and a bracket of the conical shell (12) is filled with sealing glue.

8. The multi-point air-jet temperature measuring instrument for the secondary cooling zone of continuous casting according to claim 1, characterized in that: A plurality of threaded seats (21) are evenly distributed on the bottom surface of the seat body (2).

9. The multi-point air-jet temperature measuring instrument for the secondary cooling zone of continuous casting according to claim 1, characterized in that: The outer shell (1) is made of ceramic material.

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