Seamless steel pipe drawing water mist cooling preheating utilization device

Abstract

The utility model discloses a seamless steel pipe drawing water mist cooling preheating utilization device, including cooling cylinder and preheating cylinder, the left and right two ends opening of cooling cylinder all are fixedly connected with annular water pipe, the surface of annular water pipe is opened with a plurality of atomizing nozzles in the circumference array, the top central of cooling cylinder is communicated with one end of the exhaust pipe, and the inboard of exhaust pipe is equipped with the impeller, the utility model discloses cooling cylinder is set up to the steel pipe cooling, and the water mist that the annular water pipe of cooling cylinder both ends sprays is under the drive of the airflow of impeller rotation and moves to the center in the cooling process, forms the water mist flow field that evenly covers whole cooling cylinder, thereby carries out all -round cooling to the steel pipe surface in cooling cylinder, not only avoids the outflow of high temperature water mist, guarantees the safety of production environment, still through expanding the cooling area and enhancing airflow disturbance, the cooling efficiency is improved significantly, and the cooling time of steel pipe is shortened.

Description

Technical Field

[0001] This utility model relates to the field of seamless steel pipe processing technology, specifically to a seamless steel pipe drawing water mist cooling and preheating utilization device. Background Technology

[0002] In the production of seamless steel pipes, the drawing process is a key link that determines the quality and performance of the steel pipes. Cooling and preheating, as important steps in the drawing process, directly affect production efficiency, energy consumption, and steel pipe quality.

[0003] Traditional seamless steel pipe drawing and cooling devices often directly discharge water mist carrying a large amount of heat when cooling the drawn steel pipes with water mist, failing to effectively recover and utilize this heat. This can also burn nearby workers, resulting in energy waste and increased production costs. Therefore, a new technical solution is proposed to address this issue. Summary of the Invention

[0004] The purpose of this utility model is to provide a water mist cooling and preheating utilization device for seamless steel pipe drawing, which solves the problem mentioned in the background art that traditional cooling devices often directly discharge water mist carrying a large amount of heat when cooling the drawn steel pipe with water mist, failing to effectively recover and utilize this heat, and may also burn the surrounding staff.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a seamless steel pipe drawing water mist cooling and preheating utilization device, comprising a cooling cylinder and a preheating cylinder, wherein annular water pipes are fixedly connected to the openings at both ends of the cooling cylinder, and a plurality of atomizing nozzles are arranged in a circumferential array on the surface of the annular water pipes, wherein the top center of the cooling cylinder is connected to one end of an exhaust pipe, and an impeller is provided on the inner side of the exhaust pipe.

[0006] In this technical solution, the water mist sprayed from the annular water pipes at both ends of the cooling cylinder moves towards the center under the influence of the airflow from the rotating impeller, forming a water mist flow field that uniformly covers the entire cooling cylinder. This provides all-round cooling to the surface of the steel pipe in the cooling cylinder, which not only prevents the leakage of high-temperature water mist and ensures the safety of the production environment, but also significantly improves the cooling efficiency and shortens the cooling time of the steel pipe by expanding the cooling area and enhancing airflow turbulence.

[0007] Preferably, the other end of the exhaust pipe is connected to the inlet of the steam-water separator, the outlet of the steam-water separator cylinder is connected to one end of the hose, and the other end of the hose passes through the constraint block and is connected to the hot air frame.

[0008] Preferably, the hot air frame is located inside the preheating cylinder, a threaded sleeve is fixedly connected to the bottom of the hot air frame, the constraint block is fixedly connected to the top of the hot air frame, and several air outlets are arranged in a circular array on the inner sidewall of the hot air frame.

[0009] Preferably, the top of the preheating cylinder is provided with a top groove, and the bottom surface of the inner side of the preheating cylinder is provided with a bottom groove. A reciprocating screw is rotatably connected to the inner side of the bottom groove. The reciprocating screw passes through a threaded sleeve and is threadedly connected to the threaded sleeve. The constraint block is located inside the top groove and is slidably connected to the top groove.

[0010] Preferably, a No. 1 motor is fixedly connected to the outer surface of the exhaust pipe directly above the impeller, and the tail end of the drive shaft of the No. 1 motor is connected to the impeller via a coupling. A No. 2 motor is fixedly connected to the outer surface of the preheating cylinder corresponding to the horizontal height of the bottom trough, and the tail end of the drive shaft of the No. 2 motor is connected to one end of the reciprocating lead screw via a coupling.

[0011] Preferably, a water collection frame is provided at the center of the bottom of the cooling cylinder, and a water inlet pipe is provided on the outer surface of the cooling cylinder. The water inlet pipe is connected to the annular water pipes on the left and right sides, and the water inlet pipe is connected to the water pump.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses a cooling cylinder to cool the steel pipe. During the cooling process, the water mist sprayed from the annular water pipes at both ends of the cooling cylinder moves towards the center under the influence of the airflow from the rotating impeller, forming a water mist flow field that evenly covers the entire cooling cylinder. This provides all-round cooling to the surface of the steel pipe in the cooling cylinder, which not only prevents the leakage of high-temperature water mist and ensures the safety of the production environment, but also significantly improves the cooling efficiency and shortens the cooling time of the steel pipe by expanding the cooling area and enhancing airflow turbulence.

[0013] 2. This utility model, by setting up a preheating cylinder, allows the hot air absorbed during the cooling process to reach the hot air frame under suction and be sprayed out from the air outlet to preheat the steel pipe. During the preheating process, the hot air frame moves back and forth along the surface of the reciprocating screw, realizing dynamic and uniform heating of the steel pipe surface, effectively avoiding the concentrated distribution of heat, greatly improving the uniformity and efficiency of preheating, and recovering and utilizing the heat in the preheating process, reducing energy consumption and production costs. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0015] Figure 1 This is an overall view of the present invention.

[0016] Figure 2This is a schematic cross-sectional view of the present invention.

[0017] Figure 3 This is a cross-sectional view of the hot air frame of this utility model.

[0018] In the diagram: 1. Cooling cylinder; 101. Water collection frame; 2. Water inlet pipe; 201. Water pump; 202. Annular water pipe; 203. Atomizing nozzle; 3. Exhaust pipe; 4. Motor No. 1; 5. Impeller; 6. Steam-water separator; 7. Preheating cylinder; 701. Top trough; 702. Bottom trough; 8. Hot air frame; 801. Air outlet; 9. Threaded sleeve; 10. Reciprocating screw; 11. Motor No. 2; 12. Constraint block; 13. Flexible hose. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description will further elaborate on them in conjunction with specific embodiments.

[0020] A seamless steel pipe drawing water mist cooling and preheating utilization device, see [link / reference]. Figures 1 to 3 The cooling cylinder includes a cooling cylinder 1 and a preheating cylinder 7. Annular water pipes 202 are fixedly connected to the openings at both ends of the cooling cylinder 1. Several atomizing nozzles 203 are arranged in a circular array on the surface of the annular water pipes 202. The top center of the cooling cylinder 1 is connected to one end of an exhaust pipe 3. An impeller 5 is located inside the exhaust pipe 3. A No. 1 motor 4 is fixedly connected to the outer surface of the exhaust pipe 3 directly above the impeller 5. The tail end of the drive shaft of the No. 1 motor 4 is connected to the impeller 5 via a coupling. When the No. 1 motor 4 starts, it drives the impeller 5 to rotate, drawing air upwards. A water collection frame 101 is located at the center of the bottom of the cooling cylinder 1. The outer surface of the cylinder 1 is provided with a water inlet pipe 2, which is connected to the annular water pipes 202 on the left and right sides. The water inlet pipe 2 is also connected to the water pump 201. When in use, the water pump 201 is started to draw external water into the water inlet pipe 2, which then enters the annular water pipes 202 at both ends. The water is then sprayed out from the atomizing nozzle 203 to spray the steel pipes it passes through, thereby accelerating the cooling of the steel pipes. The sprayed water mist moves towards the center under the airflow driven by the rotating impeller 5, thereby cooling the surface of the steel pipes in the entire cooling cylinder 1, preventing the leakage of high-temperature water mist, and improving the cooling area and cooling efficiency.

[0021] Specifically, such as Figure 2 As shown, the hot air frame 8 is located inside the preheating cylinder 7. The inner wall of the hot air frame 8 has several air outlets 801 arranged in a circular array. The bottom of the hot air frame 8 is fixedly connected to a threaded sleeve 9, and the constraint block 12 is fixedly connected to the top of the hot air frame 8. The water vapor in the cooling process reaches the hot air frame 8 after passing through the steam-water separator 6. The hot air frame 8 is annular, so it can blow air to heat various positions on the outer surface of the steel pipe, so that the heating is kept uniform.

[0022] It should be noted that the preheating process is generally carried out after the tube blank has been pierced and before it enters the drawing machine. Therefore, the length of the exhaust pipe 3 is set according to actual needs, so that the preheating cylinder 7 can be positioned before the drawing machine. At this time, the tube blank already has a preliminary hollow structure, but further processing is required to achieve the required tube diameter and wall thickness. By preheating the tube blank, the overall temperature of the tube blank can be uniformly raised to a suitable range for drawing, creating favorable conditions for subsequent drawing operations. Common preheating methods include resistance heating and induction heating. The preheating cylinder 7 is mainly set up in conjunction with the above heating methods to utilize the heat absorbed during cooling, thereby achieving energy saving.

[0023] Furthermore, such as Figure 1 and Figure 2 As shown, a top groove 701 is provided at the top of the preheating cylinder 7, and a bottom groove 702 is provided on the inner bottom surface of the preheating cylinder 7. A reciprocating screw 10 is rotatably connected to the inner side of the bottom groove 702. The reciprocating screw 10 passes through the threaded sleeve 9 and is threadedly connected to the threaded sleeve 9. The constraint block 12 is located inside the top groove 701 and is slidably connected to the top groove 701. A second motor 11 is fixedly connected to the outer surface of the preheating cylinder 7 corresponding to the horizontal height of the bottom groove 702. The tail end of the drive shaft of the second motor 11 is connected to one end of the reciprocating screw 10 through a coupling. When the hot air frame 8 heats the steel pipe, the second motor 11 starts and drives the reciprocating screw 10 to rotate. At this time, the threaded sleeve 9 will move back and forth laterally with the hot air frame 8, thereby increasing the preheating range, avoiding heat concentration, and improving the uniformity and efficiency of preheating.

[0024] It is worth noting that, such as Figure 2 As shown, the other end of the exhaust pipe 3 is connected to the inlet of the steam-water separator 6, and the outlet of the steam-water separator cylinder is connected to one end of the hose 13. The other end of the hose 13 passes through the constraint block 12 and is connected to the hot air frame 8. When water vapor enters the separator, by setting baffles, changing the flow cross section, and making the fluid rotate, the speed is reduced and the direction is changed. Steam flows upward due to its lower density, while water flows downward or is separated due to its higher density, thus achieving the separation of steam and water to obtain relatively pure steam. At this time, the steam still carries heat and enters the hot air frame 8 after leaving the steam-water separator 6, ultimately heating the steel pipe.

[0025] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

Claims

1. A water mist cooling and preheating utilization device for seamless steel pipe drawing, comprising a cooling cylinder (1) and a preheating cylinder (7), characterized in that: The cooling cylinder (1) has a ring-shaped water pipe (202) fixedly connected to the openings at both ends. The surface of the ring-shaped water pipe (202) is provided with a number of atomizing nozzles (203) in a circular array. The top center of the cooling cylinder (1) is connected to one end of the exhaust pipe (3). An impeller (5) is provided on the inner side of the exhaust pipe (3).

2. The seamless steel pipe drawing water mist cooling and preheating utilization device according to claim 1, characterized in that: The other end of the exhaust pipe (3) is connected to the inlet of the steam-water separator (6), the outlet of the steam-water separator is connected to one end of the hose (13), and the other end of the hose (13) passes through the constraint block (12) and is connected to the hot air frame (8).

3. The seamless steel pipe drawing water mist cooling and preheating utilization device according to claim 2, characterized in that: The hot air frame (8) is located inside the preheating cylinder (7). A threaded sleeve (9) is fixedly connected to the bottom of the hot air frame (8). The constraint block (12) is fixedly connected to the top of the hot air frame (8). Several air outlets (801) are arranged in a circular array on the inner sidewall of the hot air frame (8).

4. The seamless steel pipe drawing water mist cooling and preheating utilization device according to claim 2, characterized in that: The top of the preheating cylinder (7) is provided with a top groove (701), and the bottom surface of the inner side of the preheating cylinder (7) is provided with a bottom groove (702). A reciprocating screw (10) is rotatably connected to the inner side of the bottom groove (702). The reciprocating screw (10) passes through the threaded sleeve (9) and is threadedly connected to the threaded sleeve (9). The constraint block (12) is located inside the top groove (701) and is slidably connected to the top groove (701).

5. A seamless steel pipe drawing water mist cooling and preheating utilization device according to claim 4, characterized in that: A No. 1 motor (4) is fixedly connected to the outer surface of the exhaust pipe (3) directly above the impeller (5). The tail end of the drive shaft of the No. 1 motor (4) is connected to the impeller (5) via a coupling. A No. 2 motor (11) is fixedly connected to the outer surface of the preheating cylinder (7) corresponding to the horizontal height of the bottom groove (702). The tail end of the drive shaft of the No. 2 motor (11) is connected to one end of the reciprocating screw (10) via a coupling.

6. The seamless steel pipe drawing water mist cooling and preheating utilization device according to claim 1, characterized in that: The cooling cylinder (1) has a water collection frame (101) at the bottom center, and a water inlet pipe (2) is provided on the outer surface of the cooling cylinder (1). The water inlet pipe (2) is connected to the annular water pipes (202) on the left and right sides, and the water inlet pipe (2) is connected to the water pump (201).

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