Heat treatment device for duplex stainless steel seamless tube

Abstract

The utility model relates to the technical field of duplex stainless steel seamless tube production, and discloses a duplex stainless steel seamless tube heat treatment device which comprises a conveying device, a heating device is fixedly connected to the conveying device, and a shaft sleeve fixing seat is fixedly connected to the conveying device. Water sprayed out of the nozzle can make contact with the surface of the stainless steel seamless pipe, and the rotating annular pipe can drive the nozzle to rotate, so that the water sprayed out of the nozzle can make uniform contact with the outer surface of the stainless steel seamless pipe, and the stainless steel seamless pipe is cooled; through operation of the structure, the stainless steel seamless pipe can be uniformly cooled, and the situation that in a traditional mode, when the stainless steel seamless pipe is subjected to heat treatment, due to the fact that water flow flowing out in a single direction makes contact with the stainless steel seamless pipe to be cooled, the internal stress is not uniform due to inconsistent cooling time and efficiency is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of duplex stainless steel seamless pipe production, in particular to a duplex stainless steel seamless pipe heat treatment device. Background Art

[0002] Duplex stainless steel is a kind of stainless steel composed of any two phases of austenite, ferrite and martensite in a ratio of about half each, but it usually refers to austenite-ferrite duplex stainless steel. It has the characteristics of both austenite and ferrite stainless steel, good comprehensive mechanical properties, high strength, high toughness; good resistance to crevice corrosion, pitting corrosion, stress corrosion cracking; good resistance to uniform corrosion; good welding performance, low tendency to thermal cracking; large thermal conductivity, small linear expansion coefficient, etc. It is widely used in tubular reactor catalytic tube bundles in methanol production; sulfuric acid cooking preheater tube bundles in pulp and paper industry; offshore and onshore oil and gas gathering pipelines; condensers in vinyl chloride production; heat exchanger tubes in crude oil desalting units and other fields.

[0003] When existing duplex stainless steel seamless pipes are heat treated, they are mostly cooled by annular water flow after heating. However, this cooling method is a single stream of water directly contacts the duplex stainless steel seamless pipe to cool it down, which will lead to inconsistent cooling time and efficiency, making the internal stress of the duplex stainless steel seamless pipe uneven, affecting the quality of the duplex stainless steel seamless pipe. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the utility model provides a duplex stainless steel seamless pipe heat treatment device with advantages such as uniform cooling, which solves the problem that in the traditional method, the stainless steel seamless pipe is cooled due to the contact of water flowing out in a single direction with the stainless steel seamless pipe during heat treatment, resulting in uneven internal stress caused by inconsistent cooling time and efficiency, thus affecting the quality of the duplex stainless steel seamless pipe.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned uniform cooling purpose, the utility model provides the following technical solutions: a duplex stainless steel seamless pipe heat treatment device, comprising a conveying device, a heating device is fixedly connected to the conveying device, a sleeve fixing seat is fixedly connected to the conveying device, a convex fixed sleeve is fixedly connected to the sleeve fixing seat, and a uniform cooling device is arranged on the convex fixed sleeve;

[0008] The uniform cooling device comprises a gear ring, the gear ring rotating sleeve is arranged on the outer surface of the convex ring of the convex fixed shaft sleeve, and the outer surface of the gear ring is fixedly connected with a plurality of rotating columns.

[0009] Preferably, an annular tube is fixedly connected to the plurality of rotating columns, a plurality of fixed columns are fixedly connected to the outer surface of the convex fixed sleeve, and a sealing outer ring is fixedly connected to the plurality of fixed columns.

[0010] Preferably, the sealing outer ring is rotatably sleeved on the outer surface of the annular tube, an annular groove is provided on the outer surface of the annular tube, a plurality of water inlet holes are provided in the annular groove, and a plurality of nozzles are provided on the inner surface of the annular tube.

[0011] Preferably, the plurality of nozzles and water inlet holes are evenly distributed in a circular array, the outer surface of the sealing outer ring is fixedly connected to a connecting pipe, and the outer surface of the shaft sleeve fixing seat is fixedly connected to a water pump.

[0012] Preferably, the output end of the water pump extends into the connecting pipe, the outer surface of the sleeve fixing seat is fixedly connected with a motor, the outer surface of the output shaft of the motor is fixedly sleeved with a gear, and the gear is meshingly connected with the gear ring.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a duplex stainless steel seamless pipe heat treatment device, which has the following beneficial effects:

[0015] 1. The duplex stainless steel seamless pipe heat treatment device starts the conveying device and the heating device. The conveying device drives the stainless steel seamless pipe thereon to move rightward until the stainless steel seamless pipe enters the heating device. The stainless steel seamless pipe entering the heating device is heated by the heating device. After being heated by the heating device, the conveying device drives the annular pipe to rotate. By starting the motor, the motor drives the annular pipe to rotate. By starting the water pump, the water pump delivers water to the sealed outer ring through the connecting pipe. The water entering the sealed outer ring enters the rotating annular pipe from the water inlet hole on the annular groove, and then sprays out from the nozzle thereon. The water sprayed from the nozzle contacts the surface of the stainless steel seamless pipe. Since the rotating annular pipe drives the nozzle to rotate, the water sprayed from the nozzle contacts the outer surface of the stainless steel seamless pipe evenly to cool the stainless steel seamless pipe. The operation of the above structure enables the stainless steel seamless pipe to be evenly cooled, thereby avoiding the uneven internal stress caused by the inconsistent cooling time and efficiency caused by the stainless steel seamless pipe in the traditional method due to the contact of the water flowing out in a single direction with the stainless steel seamless pipe during heat treatment.

[0016] 2. The duplex stainless steel seamless pipe heat treatment device can continuously supply water to the annular pipe when the annular pipe rotates through the annular groove and the water inlet hole set on the annular pipe, so that the stainless steel seamless pipe can be effectively and evenly heat treated during the operation of the water, thereby improving the stability of the heat treatment of the stainless steel seamless pipe to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the annular tube 9 of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the uniform cooling device of the utility model.

[0020] In the figure: 1. conveying device; 2. heating device; 3. shaft sleeve fixing seat; 4. convex fixed shaft sleeve; 5. gear ring; 6. rotating column; 7. fixed column; 8. sealing outer ring; 9. annular tube; 10. gear; 11. nozzle; 12. motor; 13. annular groove; 14. water inlet hole; 15. connecting pipe; 16. water pump. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 The utility model provides a new technical solution: a duplex stainless steel seamless pipe heat treatment device, comprising a conveying device 1, a heating device 2 is fixedly connected to the conveying device 1, a sleeve fixing seat 3 is fixedly connected to the conveying device 1, a convex fixed sleeve 4 is fixedly connected to the sleeve fixing seat 3, and a uniform cooling device is arranged on the convex fixed sleeve 4;

[0023] Furthermore, the uniform cooling device includes a gear ring 5, which is rotatably sleeved on the outer surface of the convex ring of the convex fixed sleeve 4, and the outer surface of the gear ring 5 is fixedly connected to a plurality of rotating columns 6.

[0024] Furthermore, an annular tube 9 is fixedly connected to the plurality of rotating columns 6 , a plurality of fixed columns 7 are fixedly connected to the outer surface of the convex fixed sleeve 4 , and a sealing outer ring 8 is fixedly connected to the plurality of fixed columns 7 .

[0025] Furthermore, the sealing outer ring 8 is rotatably sleeved on the outer surface of the annular tube 9 , an annular groove 13 is provided on the outer surface of the annular tube 9 , a plurality of water inlet holes 14 are provided in the annular groove 13 , and a plurality of nozzles 11 are provided on the inner surface of the annular tube 9 .

[0026] Furthermore, the plurality of nozzles 11 and the water inlet holes 14 are evenly distributed in a ring array, a connecting pipe 15 is fixedly connected to the outer surface of the sealing outer ring 8 , and a water pump 16 is fixedly connected to the outer surface of the shaft sleeve fixing seat 3 .

[0027] Furthermore, the output end of the water pump 16 extends into the connecting pipe 15 , the outer surface of the sleeve fixing seat 3 is fixedly connected with the motor 12 , the outer surface of the output shaft of the motor 12 is fixedly sleeved with a gear 10 , and the gear 10 is meshed and connected with the ring gear 5 .

[0028] Furthermore, when in use, by starting the conveying device 1 and the heating device 2, the conveying device 1 will drive the stainless steel seamless pipe thereon to move to the right until the stainless steel seamless pipe enters the heating device 2, and the stainless steel seamless pipe entering the heating device 2 will be heated by the heating device 2, and after being heated by the heating device 2, it will be driven by the conveying device 1 to continue to move backward, and by starting the motor 12, the motor 12 will drive the gear ring 5 to rotate through the connecting pipe 15 thereon, and when the gear ring 5 rotates, it will drive the annular tube 9 to rotate through the rotating column 6 thereon, and by starting the water pump 16, the water pump 16 will transport water to the sealing outer ring 8 through the connecting pipe 15, and the water entering the sealing outer ring 8 will be The water enters the rotating annular tube 9 through the water inlet hole 14 on the annular groove 13, and then is sprayed out from the nozzle 11 thereon. The water sprayed from the nozzle 11 will contact the surface of the stainless steel seamless tube. Since the rotating annular tube 9 will drive the nozzle 11 to rotate, the water sprayed from the nozzle 11 will evenly contact the outer surface of the stainless steel seamless tube to cool the stainless steel seamless tube. The operation of the above structure can make the stainless steel seamless tube evenly cooled, avoiding the traditional method of cooling the stainless steel seamless tube due to the contact of the water flowing out in a single direction with the stainless steel seamless tube during heat treatment, resulting in uneven internal stress caused by inconsistent cooling time and efficiency.

[0029] Furthermore, by providing the annular groove 13 and the water inlet hole 14 on the annular tube 9, water can be continuously supplied to the annular tube 9 when the annular tube 9 rotates, so that the stainless steel seamless tube can be effectively and evenly heat treated during the operation of the water, thereby improving the stability of the heat treatment of the stainless steel seamless tube to a certain extent.

[0030] Working principle: When in use, by starting the conveying device 1 and the heating device 2, the conveying device 1 will drive the stainless steel seamless pipe on it to move to the right until the stainless steel seamless pipe enters the heating device 2. The stainless steel seamless pipe entering the heating device 2 will be heated by the heating device 2. After being heated by the heating device 2, it will be driven by the conveying device 1 to continue to move backward. By starting the motor 12, the motor 12 will drive the gear ring 5 to rotate through the connecting pipe 15 thereon. When the gear ring 5 rotates, it will drive the annular tube 9 to rotate through the rotating column 6 thereon. By starting the water pump 16, the water pump 16 will transport water to the sealing outer ring 8 through the connecting pipe 15. The water entering the sealing outer ring 8 will be The water enters the rotating annular tube 9 through the water inlet hole 14 on the annular groove 13, and then is sprayed out from the nozzle 11 thereon. The water sprayed from the nozzle 11 will contact the surface of the stainless steel seamless tube. Since the rotating annular tube 9 will drive the nozzle 11 to rotate, the water sprayed from the nozzle 11 will evenly contact the outer surface of the stainless steel seamless tube to cool the stainless steel seamless tube. The operation of the above structure can make the stainless steel seamless tube evenly cooled, avoiding the traditional method of cooling the stainless steel seamless tube due to the contact of the water flowing out in a single direction with the stainless steel seamless tube during heat treatment, resulting in uneven internal stress caused by inconsistent cooling time and efficiency.

[0031] Furthermore, by providing the annular groove 13 and the water inlet hole 14 on the annular tube 9, water can be continuously supplied to the annular tube 9 when the annular tube 9 rotates, so that the stainless steel seamless tube can be effectively and evenly heat treated during the operation of the water, thereby improving the stability of the heat treatment of the stainless steel seamless tube to a certain extent.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A duplex stainless steel seamless pipe heat treatment device, comprising a conveying device (1), characterized in that: The conveying device (1) is fixedly connected to a heating device (2), the conveying device (1) is fixedly connected to a shaft sleeve fixing seat (3), the shaft sleeve fixing seat (3) is fixedly connected to a convex fixed shaft sleeve (4), and the convex fixed shaft sleeve (4) is provided with a uniform cooling device; The uniform cooling device comprises a gear ring (5), the gear ring (5) being rotatably sleeved on the outer surface of a convex ring of a convex fixed shaft sleeve (4), and a plurality of rotating columns (6) being fixedly connected to the outer surface of the gear ring (5).

2. A duplex stainless steel seamless pipe heat treatment device according to claim 1, characterized in that: An annular tube (9) is fixedly connected to the plurality of rotating columns (6), a plurality of fixed columns (7) are fixedly connected to the outer surface of the convex fixed shaft sleeve (4), and a sealing outer ring (8) is fixedly connected to the plurality of fixed columns (7).

3. A duplex stainless steel seamless pipe heat treatment device according to claim 2, characterized in that: The sealing outer ring (8) is rotatably sleeved on the outer surface of the annular tube (9), the outer surface of the annular tube (9) is provided with an annular groove (13), a plurality of water inlet holes (14) are provided in the annular groove (13), and a plurality of nozzles (11) are provided on the inner surface of the annular tube (9).

4. A duplex stainless steel seamless pipe heat treatment device according to claim 3, characterized in that: The plurality of nozzles (11) and water inlet holes (14) are evenly distributed in a ring array, the outer surface of the sealing outer ring (8) is fixedly connected to a connecting pipe (15), and the outer surface of the shaft sleeve fixing seat (3) is fixedly connected to a water pump (16).

5. A duplex stainless steel seamless pipe heat treatment device according to claim 4, characterized in that: The output end of the water pump (16) extends into the connecting pipe (15), the outer surface of the shaft sleeve fixing seat (3) is fixedly connected to the motor (12), the outer surface of the output shaft of the motor (12) is fixedly sleeved with a gear (10), and the gear (10) is meshingly connected to the gear ring (5).

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