Heat treatment equipment for stainless steel seamless steel pipe production

Abstract

The utility model provides heat treatment equipment for stainless steel seamless steel pipe production, which comprises a plurality of electric induction heating furnaces, a plurality of driving rotators and a spiral cooler, and the driving rotators are arranged on the two electric induction heating furnaces; the spiral cooling machine is positioned on one side of the electric induction heating furnace; according to the utility model, the driving rotator and the spiral cooler are additionally arranged. The rotating device is driven to enable the steel pipe to automatically rotate in the heating process, the heating effect is improved, meanwhile, surface impurities are rolled, and convenience is provided for follow-up cleaning work. The spiral cooling machine efficiently cools the surface of the steel pipe by forming spiral water beams in different rotating directions, residual attachments are further removed through impact force of the water beams, and cleanliness of the surface of the steel pipe is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat treatment of steel pipes, and in particular relates to heat treatment equipment for producing stainless steel seamless steel pipes. Background Art

[0002] Heat treatment is a metal heat processing process that aims to achieve the desired structure and properties of the material in the solid state by means of heating, heat preservation and cooling. In order to give the steel pipe specific properties, heat treatment is an indispensable link. However, when cooling the surface of the steel pipe after the heat treatment is completed, the existing methods have obvious shortcomings.

[0003] At present, steel pipe heat treatment equipment mainly relies on roller conveyors to send the steel pipes straight into the heating furnace, and then spray liquid through water pipes for cooling. However, this method has significant defects. First, during the heating process of the steel pipe, impurities tend to form a layer of attachments on the surface that are difficult to remove, and even high-pressure flushing is difficult to completely remove. Secondly, high-pressure water tends to splash around the equipment when spraying, which not only causes an untidy working environment, but also may pose a threat to the safety of operators. More importantly, this cooling method is often difficult to fully and efficiently cover the surface of the steel pipe, thus affecting the cooling effect and the final quality of the steel pipe.

[0004] Therefore, it is very necessary to invent a heat treatment equipment for producing stainless steel seamless steel pipe. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a heat treatment equipment for the production of stainless steel seamless steel pipes, including an electric induction heating furnace, a driving rotator and a spiral cooler, wherein the electric induction heating furnace is provided with a plurality of driving rotators installed on two of the electric induction heating furnaces; the spiral cooler is located on one side of the electric induction heating furnace;

[0006] The driving rotator comprises a core shaft, a driving wheel, a belt pulley, a high temperature resistant motor, a pressure wheel and a high temperature resistant belt, wherein two core shafts are provided, and the two core shafts are rotatably mounted on the electric induction heating furnace, and the driving wheel and the belt pulley are fixedly mounted on the core shaft; the belt pulley is fixedly mounted on the output end of the high temperature resistant motor, the belt pulley on the high temperature resistant motor and the belt pulley on the core shaft, and the high temperature resistant belt is mounted on the pressure wheel, and the pressure wheel is rotatably mounted on one of the electric induction heating furnaces;

[0007] The spiral cooler includes a cooling water tank, a spiral cooling cover, a water injection pipe, a circulation pipe and a drainage pipe. The cooling water tank is located on one side of the electric induction heating furnace. The spiral cooling cover is fixedly installed on the cooling water tank. The water injection pipes are fixedly installed at both ends of the spiral cooling cover. The water injection pipes are connected to the cooling water tank through the circulation pipe; the drainage pipe is fixedly installed at the middle and lower part of the spiral cooling cover.

[0008] Preferably, the driving wheel contacts the outer surface of the steel pipe, the pressure wheel is located between the two driving wheels, and the driving wheel is located on one side of the belt pulley.

[0009] Preferably, there are three belt pulleys in total and they are of three-point type. The three belt pulleys are located around the pressure wheel, and the high temperature resistant motor is arranged directly below the pressure wheel.

[0010] Preferably, the cooling water tank is located directly below the spiral cooling hood, a water pump installed on the cooling water tank is connected to the lower end of the circulation pipe, and the upper end of the circulation pipe is connected to the water injection pipe port.

[0011] Preferably, the water injection nozzle is tangentially connected to the spiral cooling hood, and two water injection nozzles are mirror-symmetrically installed on the spiral cooling hood; the spiral cooling hood is an outer shell composed of two conical hoods, and the inner circle diameters at both ends of the spiral cooling hood are smaller than the middle inner circle diameter.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] Based on the traditional technology, the utility model creatively adds a driving rotator. This innovative design enables the heated steel pipe to be driven by the driving rotator, thereby realizing the rotation of the steel pipe. The steel pipe in this rotating state not only makes the heating effect more comprehensive and excellent, but also can crush the impurities attached to the surface of the steel pipe through the rotating driving wheel, thereby effectively reducing the volume of the impurities attached, providing great convenience for subsequent cleaning work.

[0014] In addition, the utility model also introduces a spiral cooler, which can form two spiral water jets with different rotation directions. The two spiral water jets can fully and efficiently cool the surface of the steel pipe by virtue of their different rotation directions. What is more clever is that when the two water jets come into contact, a certain degree of impact force will be generated, which can further process the residual attachments on the surface of the steel pipe and ensure that the cleanliness of the surface of the steel pipe reaches a higher level. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2It is a structural schematic diagram of the driving rotator of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the spiral cooler of the utility model.

[0018] In the figure:

[0019] Electric induction heating furnace 1, driving rotator 2, core shaft 21, driving wheel 22, belt pulley 23, high temperature resistant motor 24, pressure wheel 25, high temperature resistant belt 26, spiral cooler 3, cooling water tank 31, spiral cooling cover 32, water injection pipe 33, circulation pipe 34, drainage pipe 35. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0021] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0022] As attached Figure 1 To Attachment Figure 3 As shown:

[0023] The utility model provides a heat treatment equipment for the production of seamless stainless steel pipes, comprising an electric induction heating furnace 1, a driving rotator 2 and a spiral cooler 3, wherein the electric induction heating furnace 1 is provided with a plurality of driving rotators 2 installed on two of the electric induction heating furnaces 1; the spiral cooler 3 is located on one side of the electric induction heating furnace 1.

[0024] The driving rotator 2 includes a core shaft 21, a driving wheel 22, a belt pulley 23, a high temperature resistant motor 24, a pressure wheel 25 and a high temperature resistant belt 26. Two core shafts 21 are provided, and the two core shafts 21 are rotatably mounted on the electric induction heating furnace 1. The driving wheel 22 and the belt pulley 23 are fixedly mounted on the core shaft 21; the belt pulley 23 is fixedly mounted on the output end of the high temperature resistant motor 24, the belt pulley 23 on the high temperature resistant motor 24 and the belt pulley 23 on the core shaft 21, and the high temperature resistant belt 26 is assembled on the pressure wheel 25, which is rotatably mounted on one of the electric induction heating furnaces 1. The introduction of the driving rotator 2 enables the steel pipe to rotate automatically during the heating process, which not only helps the steel pipe to be heated more evenly, but also can crush the impurities attached to the surface of the steel pipe by rotation, effectively reducing the volume of impurities, and providing convenience for subsequent cleaning work.

[0025] The spiral cooler 3 includes a cooling water tank 31, a spiral cooling cover 32, a water injection nozzle 33, a circulation pipe 34 and a drainage nozzle 35. The cooling water tank 31 is located on one side of the electric induction heating furnace 1. The spiral cooling cover 32 is fixedly installed on the cooling water tank 31. The two ends of the spiral cooling cover 32 are fixedly installed with the water injection nozzles 33. The water injection nozzles 33 are connected to the cooling water tank 31 through the circulation pipe 34. The drainage nozzle 35 is fixedly installed at the middle and lower part of the spiral cooling cover 32. Two spiral water beams with different rotation directions are formed by the spiral cooling cover 32 to efficiently cool the surface of the steel pipe. This cooling method is not only comprehensive, but also can generate a certain impact force to further remove residual attachments on the surface of the steel pipe.

[0026] Embodiment 1:

[0027] Specifically, the driving wheel 22 contacts the outer surface of the steel pipe and provides the steel pipe with rotational power through friction. This design ensures that the steel pipe can rotate stably during the heating process, avoiding the problem of inconsistent heating effect caused by the unstable position or uneven rotation of the steel pipe. The pressing wheel 25 is located between the two driving wheels 22, and the driving wheel 22 is located on one side of the belt pulley 23, and the rotating driving wheel 22 crushes the impurities attached to the surface of the steel pipe.

[0028] Specifically, there are three belt pulleys 23 in total, and they are three-point type. The three belt pulleys 23 are located around the pressure wheel 25. The high temperature resistant motor 24 is arranged directly below the pressure wheel 25. The setting of the pressure wheel 25 is used to prevent the high temperature resistant belt 26 from affecting the normal transportation of the steel pipe.

[0029] Specifically, the cooling water tank 31 is located directly below the spiral cooling cover 32. The water pump installed on the cooling water tank 31 is connected to the lower end of the circulation pipe 34. The upper end of the circulation pipe 34 is connected to the water injection nozzle 33. This layout ensures that the cooling water can be smoothly drawn from the cooling water tank 31 and transported to the water injection nozzle 33 of the spiral cooling cover 32 through the circulation pipe 34, thereby forming a spiral water beam to cool the steel pipe. The water pump is responsible for drawing the cooling water from the water tank and transporting it to the upper end through the lower end of the circulation pipe 34. The design of the circulation pipe 34 ensures the circulation of the cooling water.

[0030] Specifically, the water injection nozzle 33 is tangentially connected to the spiral cooling cover 32, and two water injection nozzles 33 are installed on the spiral cooling cover 32 in a mirror-symmetrical manner; the spiral cooling cover 32 is a shell composed of two conical covers. This design ensures that the cooling water can smoothly enter the spiral cooling cover 32 and form a stable spiral water beam inside the spiral cooling cover 32. It ensures that the cooling water can evenly enter the spiral cooling cover 32 from two directions, forming two spiral water beams with different rotation directions, and enhancing the uniformity and effect of cooling. The two water injection nozzles 33 supply water at the same time, which can quickly fill the inside of the spiral cooling cover 32, forming a strong cooling force, and performing a comprehensive cooling treatment on the steel pipe. In addition, the conical design enables the cooling water to form a spiral water flow when flowing through the spiral cooling cover 32, increasing the contact area between the cooling water and the surface of the steel pipe, thereby improving the cooling efficiency. At the same time, the inner circle diameters of the two ends of the spiral cooling cover 32 are smaller than the inner circle diameter in the middle. This design enables the cooling water to gradually accelerate when flowing through the spiral cooling cover 32, forming a stronger impact force, further improving the cooling effect and cleaning ability.

[0031] Embodiment 2:

[0032] First, the steel pipe is fed into the electric induction heating furnace 1, which heats the steel pipe through the principle of electromagnetic induction to make the steel pipe reach the required heating temperature. This heating method has the advantages of fast heating speed and uniform heating, and can improve the heating efficiency and quality of the steel pipe. While heating, the drive rotator 2 starts to work. After the high temperature resistant motor 24 is started, the power is transmitted to the mandrel 21 through the belt pulley 23 and the high temperature resistant belt 26, thereby driving the driving wheel 22 to rotate. The driving wheel 22 contacts the outer surface of the steel pipe and drives the steel pipe to rotate automatically in the electric induction heating furnace 1 through friction. The rotation of the steel pipe not only helps it to be heated more evenly, but also can crush the impurities attached to the surface of the steel pipe through the force generated by the rotation, effectively reducing the volume of impurities, and providing convenience for subsequent cleaning work. The steel pipe after heating and rotation treatment then enters the spiral cooler 3 for cooling. The water pump in the cooling water tank 31 is started to transport the cooling water to the water injection nozzle 33 of the spiral cooling cover 32 through the circulation pipe 34. Since the water injection nozzle 33 is tangentially connected to the spiral cooling hood 32, the cooling water can smoothly enter the interior of the spiral cooling hood 32 and form two spiral water jets with different rotation directions under the guidance of the spiral cooling hood 32. The two spiral water jets are sprayed onto the surface of the steel pipe at high speed to efficiently cool the steel pipe. At the same time, the impact force of the spiral water jet can further remove the residual attachments on the surface of the steel pipe and improve the cleanliness of the steel pipe. The cooled steel pipe continues to move forward and finally completes the entire heat treatment process. After the cooling water is circulated inside the spiral cooling hood 32, it is discharged back to the cooling water tank 31 through the drain nozzle 35 to achieve the recycling of the cooling water.

[0033] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A heat treatment equipment for producing seamless stainless steel pipes, characterized in that: The invention comprises an electric induction heating furnace (1), a driving rotator (2) and a spiral cooler (3), wherein the electric induction heating furnace (1) is provided with a plurality of the driving rotators (2), the driving rotators (2) being installed on two of the electric induction heating furnaces (1); and the spiral cooler (3) being located on one side of the electric induction heating furnace (1); The driving rotator (2) comprises a core shaft (21), a driving wheel (22), a belt pulley (23), a high temperature resistant motor (24), a pressure wheel (25) and a high temperature resistant belt (26); two core shafts (21) are provided, and the two core shafts (21) are rotatably mounted on the electric induction heating furnace (1); the driving wheel (22) and the belt pulley (23) are fixedly mounted on the core shaft (21); the belt pulley (23) is fixedly mounted on the output end of the high temperature resistant motor (24); the belt pulley (23) on the high temperature resistant motor (24) and the belt pulley (23) on the core shaft (21); and the high temperature resistant belt (26) is mounted on the pressure wheel (25); the pressure wheel (25) is rotatably mounted on one of the electric induction heating furnaces (1); The spiral cooler (3) comprises a cooling water tank (31), a spiral cooling cover (32), a water injection pipe (33), a circulation pipe (34) and a drainage pipe (35); the cooling water tank (31) is located on one side of the electric induction heating furnace (1); the spiral cooling cover (32) is fixedly mounted on the cooling water tank (31); the water injection pipe (33) is fixedly mounted at both ends of the spiral cooling cover (32); the water injection pipe (33) is connected to the cooling water tank (31) through the circulation pipe (34); and the drainage pipe (35) is fixedly mounted at the middle and lower part of the spiral cooling cover (32).

2. A heat treatment equipment for producing seamless stainless steel pipes as claimed in claim 1, characterized in that: The driving wheel (22) contacts the outer surface of the steel pipe, the pressure wheel (25) is located between the two driving wheels (22), and the driving wheel (22) is located on one side of the belt pulley (23).

3. The heat treatment equipment for producing seamless stainless steel pipes according to claim 1, characterized in that: There are three belt pulleys (23) in total and they are in a three-point type. The three belt pulleys (23) are located around the pressure wheel (25), and the high temperature resistant motor (24) is arranged directly below the pressure wheel (25).

4. The heat treatment equipment for producing seamless stainless steel pipes according to claim 1, characterized in that: The cooling water tank (31) is located directly below the spiral cooling cover (32); a water pump installed on the cooling water tank (31) is connected to the lower end of the circulation pipe (34); and the upper end of the circulation pipe (34) is connected to the water injection pipe port (33).

5. The heat treatment equipment for producing seamless stainless steel pipes according to claim 1, characterized in that: The water injection pipe opening (33) is tangentially connected to the spiral cooling cover (32), and two water injection pipe openings (33) are mounted on the spiral cooling cover (32) in a mirror-symmetrical manner; the spiral cooling cover (32) is an outer shell composed of two conical covers, and the inner circle diameters at both ends of the spiral cooling cover (32) are smaller than the inner circle diameter in the middle.

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