Silicon carbide ejector rod cooling device for seamless steel pipe manufacturing

Abstract

The utility model relates to the technical field of steel pipe production equipment, and discloses a silicon carbide ejector rod cooling device for seamless steel pipe manufacturing, which comprises a water tank, and a fixed pipe is fixedly sleeved inside the rear part of the top end of the water tank. According to the silicon carbide ejector rod cooling device for manufacturing the seamless steel pipe, due to the fact that the cavity design is adopted in the ejector rod and the ejector head, water can flow through the interior of the ejector rod and the interior of the ejector head, all-directional and efficient cooling of the ejector rod and the ejector head is achieved, and the ejector rod and the ejector head are always kept within a proper working temperature range in the hot piercing process; the problems of deformation and abrasion caused by local overheating are effectively avoided, the working performance of the ejector rod is remarkably improved, the service life of the ejector rod is remarkably prolonged, water can continuously run in a closed circulating system due to the design of the liquid inlet pipe, the backflow pipe and the water tank, only a small amount of part consumed due to evaporation and the like needs to be supplemented, and the production cost is greatly reduced for enterprises.

Description

Technical Field

[0001] This utility model relates to the technical field of steel pipe production equipment, and more specifically, to a silicon carbide top rod cooling device for seamless steel pipe manufacturing. Background Technology

[0002] Seamless steel pipes are made by piercing a whole round steel bar and have no weld seams on the surface. They are widely used in oil and geological drilling pipes, cracking pipes for petrochemicals, boiler tubes, bearing tubes, as well as automobiles, tractors, aviation and other fields.

[0003] In the production process of seamless steel pipes, hot piercing is a crucial step. During hot piercing, the mandrel, as an important tool component, continuously endures high temperature, high pressure, and friction. Under high-temperature conditions, the mandrel is prone to deformation and wear, severely affecting its service life and working performance, which in turn adversely affects the production quality and efficiency of seamless steel pipes. Currently, the traditional cooling method for mandrels is mostly external spray cooling. Although external spray cooling is relatively simple to operate, its cooling effect is uneven and it is difficult to reduce the temperature of the mandrel in a comprehensive and efficient manner. Especially during the hot piercing process, the temperature rises sharply at the parts where the mandrel frequently contacts the high-temperature steel pipe. External spray cannot effectively reduce the temperature in this area in time, causing the mechanical properties of the mandrel to decline at high temperatures, accelerating its deformation and wear. Furthermore, external spray cooling wastes a lot of water resources, and the unstable cooling effect of external spray cooling leads to fluctuations in the performance of the mandrel. The instability of the mandrel's performance results in inconsistent quality of the produced seamless steel pipes and an increased scrap rate. Therefore, it is necessary to improve this method. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a silicon carbide mandrel cooling device for seamless steel pipe manufacturing, which has the advantage of efficient circulating cooling of mandrel and mandrel.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a silicon carbide push rod cooling device for seamless steel pipe manufacturing, comprising:

[0006] A water tank, wherein a fixing pipe is fixedly sleeved inside the rear top of the water tank, and a fixing block is fixedly installed on the top front of the water tank;

[0007] A cooling mechanism is disposed on the front side of the fixed block;

[0008] The cooling mechanism includes a fixed rod, the rear end of which is fixedly connected to the front of a fixed block. A top rod is movably sleeved on the outer surface of the fixed rod. A top head is fixedly installed at the front end of the top rod. The top head is made of silicon carbide material. An inlet pipe and a return pipe are fixedly sleeved inside the top rod. The outer surfaces of both the inlet pipe and the return pipe are fixedly sleeved inside the fixed block. The outer surface of the rear end of the inlet pipe is fixedly sleeved inside the bottom front end of the water tank. A water pump is fixedly installed at the rear end of the inlet pipe. A cooling pipe is fixedly installed at the rear end of the return pipe. The outer surface of the rear end of the cooling pipe is fixedly sleeved inside the top end of the water tank.

[0009] As a preferred embodiment of this utility model, fins are fixedly sleeved on the outer surface of the cooling pipe, and the bottom end of the fins is fixedly connected to the top end of the water tank.

[0010] As a preferred embodiment of this utility model, a heat-absorbing tube is fixedly sleeved inside the fin, and the outer surface of the heat-absorbing tube is fixedly sleeved with the inside of the top of the water tank. The heat-absorbing tube is made of copper.

[0011] As a preferred embodiment of this utility model, a fixing frame is fixedly installed at the top of the left and right sides of the water tank, a bracket is fixedly installed at the top of the fixing frame, a motor is fixedly installed at the top of the bracket, and a rotating shaft is fixedly sleeved at the other end of the motor output shaft.

[0012] As a preferred embodiment of this utility model, a drive gear is fixedly sleeved at the bottom end of the outer surface of the rotating shaft, and a driven gear is meshed with the outer surface of the drive gear.

[0013] As a preferred embodiment of this utility model, a vertical shaft is fixedly sleeved inside the driven gear, the outer surface of the vertical shaft is movably sleeved with the inner part of the top of the fixed frame, and a fan blade is fixedly sleeved at the bottom of the outer surface of the vertical shaft.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This silicon carbide mandrel cooling device for seamless steel pipe manufacturing features a cavity design inside the mandrel and mandrel, allowing water to flow through their interiors for comprehensive and efficient cooling. This ensures that the mandrel and mandrel remain within a suitable operating temperature range during hot piercing, effectively preventing deformation and wear caused by localized overheating. This significantly improves the working performance and service life of the mandrel. Furthermore, the design of the inlet pipe, return pipe, and water tank allows water to continuously circulate within a closed system, requiring only the replenishment of a small amount lost due to evaporation, thus significantly reducing production costs for enterprises.

[0016] 2. This silicon carbide push rod cooling device for seamless steel pipe manufacturing differs from the complex structure of traditional circulating water cooling systems. The self-circulating cooling equipment has a compact and reasonable structural design. Due to the design of the cooling pipe and heat absorption pipe, the heat in the circulating water can be quickly directed to the fins. Furthermore, due to the design of the fins, the heat can be quickly dissipated by increasing the heat dissipation area. This design enhances the heat dissipation efficiency of the fins, thereby achieving the function of efficient cooling of the circulating water and ensuring the subsequent cooling effect on the push rod and push head. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a cross-sectional view of the motor of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the cooling pipe of this utility model.

[0021] In the diagram: 1. Water tank; 2. Fixed pipe; 3. Fixed block; 4. Fixed rod; 5. Top rod; 6. Top head; 7. Liquid inlet pipe; 8. Return pipe; 9. Water pump; 10. Cooling pipe; 11. Fins; 12. Heat absorption pipe; 13. Fixed frame; 14. Support; 15. Motor; 16. Rotating shaft; 17. Drive gear; 18. Driven gear; 19. Vertical shaft; 20. Fan blade. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 4 As shown, this utility model provides a silicon carbide mandrel cooling device for seamless steel pipe manufacturing, comprising:

[0024] Water tank 1, with a fixing pipe 2 fixedly connected to the inner rear of the top of water tank 1, and a fixing block 3 fixedly installed on the top of the front of water tank 1.

[0025] Cooling mechanism, the cooling mechanism is set on the front of the fixed block 3;

[0026] The cooling mechanism includes a fixed rod 4, the rear end of which is fixedly connected to the front of a fixed block 3. A top rod 5 is movably sleeved on the outer surface of the fixed rod 4. A top head 6 is fixedly installed at the front end of the top rod 5. The top head 6 is made of silicon carbide material. An inlet pipe 7 and a return pipe 8 are fixedly sleeved inside the top rod 5. The outer surfaces of both the inlet pipe 7 and the return pipe 8 are fixedly sleeved inside the fixed block 3. The outer surface of the rear end of the inlet pipe 7 is fixedly sleeved inside the bottom front end of the water tank 1. A water pump 9 is fixedly installed at the rear end of the inlet pipe 7. A cooling pipe 10 is fixedly installed at the rear end of the return pipe 8. The outer surface of the rear end of the cooling pipe 10 is fixedly sleeved inside the top end of the water tank 1.

[0027] Because the top rod 5 and the fixed rod 4 are movably connected on their outer surfaces, the top rod 5 and the top head 6 can move back and forth and rotate along the outer surface of the fixed rod 4. When the top rod 5 and the top head 6 move forward and rotate along the outer surface of the fixed rod 4, they can perform hot piercing on the steel billet. Due to the design of the fixed pipe 2, when the top rod 5 moves along the outer surface of the fixed rod 4, air will enter the water tank 1 through the fixed pipe 2. Then, this air will enter the top rod 5 through the cooling pipe 10 and the return pipe 8, so that the air pressure inside the top rod 5 is consistent with the external air pressure. When the water pump 9 is running, the water inside the water tank 1 will flow into the liquid inlet pipe 7 under the drive of the water pump 9. Then, the water inside the liquid inlet pipe 7 will flow into the top rod 5 to cool the top rod 5 and the top head 6. Due to the design of the return pipe 8, the water inside the top rod 5 can flow into the cooling pipe 10 through the return pipe 8, and then return to the water tank 1 through the cooling pipe 10 to complete the circulation.

[0028] The outer surface of the cooling pipe 10 is fixedly fitted with fins 11, and the bottom end of the fins 11 is fixedly connected to the top end of the water tank 1.

[0029] When the high-temperature water inside the top rod 5 flows into the cooling pipe 10 through the return pipe 8, the high-temperature water will conduct heat to the cooling pipe 10. Subsequently, the heat on the cooling pipe 10 will be absorbed by the fins 11. Due to the design of the fins 11, the hot water can be cooled down quickly by increasing the heat dissipation area.

[0030] The fin 11 is fitted with a heat absorption tube 12, the outer surface of which is fitted with the inner surface of the top of the water tank 1. The heat absorption tube 12 is made of copper.

[0031] Due to the design of the heat absorption tube 12, the temperature of the water inside the water tank 1 can be efficiently transferred to the fins 11, and then the fins 11 will quickly dissipate this temperature, thereby further reducing the water temperature.

[0032] Among them, a fixed frame 13 is fixedly installed on the top of the left and right sides of the water tank 1, a bracket 14 is fixedly installed on the top of the fixed frame 13, a motor 15 is fixedly installed on the top of the bracket 14, and a rotating shaft 16 is fixedly sleeved on the other end of the output shaft of the motor 15.

[0033] When the motor 15 is running, the shaft 16 will rotate. Due to the design of the bracket 14, the motor 15 will be well supported. Due to the design of the fixing frame 13, the bracket 14 will be well supported as a whole.

[0034] Among them, a drive gear 17 is fixedly sleeved at the bottom of the outer surface of the rotating shaft 16, and a driven gear 18 is meshed with the outer surface of the drive gear 17.

[0035] When the shaft 16 rotates, the drive gear 17 will rotate under the drive of the shaft 16. Since the drive gear 17 is meshed with the driven gear 18, the drive gear 17 will simultaneously drive the four driven gears 18 to rotate.

[0036] Among them, the driven gear 18 is fixedly sleeved with a vertical shaft 19, the outer surface of the vertical shaft 19 is movably sleeved with the inner part of the top of the fixed frame 13, and the bottom end of the outer surface of the vertical shaft 19 is fixedly sleeved with a fan blade 20.

[0037] When the four driven gears 18 rotate, they will drive the four fan blades 20 to rotate through the four vertical shafts 19. When the four fan blades 20 rotate, they will blow air onto the fins 11, thereby accelerating the airflow rate around the fins 11 and further improving the heat dissipation efficiency of the fins 11.

[0038] Working principle and usage process of this utility model:

[0039] When operators are producing and processing seamless steel pipes, they first place the high-temperature steel billet at the front end of the mandrel 6. Then, with the help of other equipment, the operators drive the mandrel 5 and the mandrel 6 to move forward and rotate along the outer surface of the fixed rod 4. At this time, the mandrel 6 and the mandrel 5 will perform hot piercing treatment on the steel billet. During this process, the temperature of the mandrel 5 and the mandrel 6 will rise rapidly. At this time, the operators start the water pump 9, which will draw water from the water tank 1 and deliver it to the inlet pipe 7. Then, this water will move through the inlet pipe 7 to the mandrel 5 and the mandrel 6. When the water enters the mandrel 5 and the mandrel 6, it will absorb the heat on the mandrel 5 and the mandrel 6 to achieve the effect of cooling the mandrel 5 and the mandrel 6. Then, this water that has absorbed the heat will enter the return pipe 8. Then, this water will flow back to the water tank 1 through the return pipe 8 and the cooling pipe 10 to complete the circulation, thereby realizing the function of efficient circulation cooling of the mandrel 5 and the mandrel 6.

[0040] When the water that has absorbed heat enters the cooling pipe 10, it conducts heat to the cooling pipe 10 to achieve a cooling effect. The cooling pipe 10 then conducts heat to the fins 11. Due to the design of the fins 11, the heat conducted by the cooling pipe 10 can be quickly dissipated, causing the hot water inside the cooling pipe 10 to cool rapidly. This hot water then flows back into the water tank 1 as warm water. When the warm water from the cooling pipe 10 flows back into the water tank 1, it comes into contact with the heat absorption pipe 12. Due to the design of the heat absorption pipe 12, the heat in the warm water can be efficiently conducted to the fins 11. The fins 11 then quickly dissipate this heat, turning the warm water in the water tank 1 into cool water, ensuring the subsequent cooling of the top rod 5 and the top... Regarding the cooling effect of the head 6, when the operator needs to enhance the heat dissipation effect of the fins 11, the operator starts the motor 15. At this time, the rotating shaft 16 will drive the drive gear 17 to rotate. Since the outer surface of the drive gear 17 is meshed with the outer surface of the driven gear 18, when the drive gear 17 rotates, it will simultaneously drive the four driven gears 18 to rotate. At this time, the four driven gears 18 will drive the four fan blades 20 to rotate through the four vertical shafts 19. Due to the design of the four fan blades 20, when the four fan blades 20 rotate, they will blow air onto the fins 11, thereby enhancing the airflow around the fins 11. This airflow will more effectively remove the heat from the surface of the fins 11, thereby improving the heat dissipation efficiency of the fins 11, thus achieving the function of efficient cooling of the circulating water.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A silicon carbide mandrel cooling device for seamless steel pipe manufacturing, characterized in that, Including: Water tank (1), a fixed pipe (2) is fixedly sleeved inside the rear top of the water tank (1), and a fixed block (3) is fixedly installed on the top of the front of the water tank (1). A cooling mechanism is provided on the front of the fixed block (3); The cooling mechanism includes a fixed rod (4), the rear end of which is fixedly connected to the front of a fixed block (3), a top rod (5) is movably sleeved on the outer surface of the fixed rod (4), a top head (6) is fixedly installed at the front end of the top rod (5), the top head (6) is made of silicon carbide material, an inlet pipe (7) and a return pipe (8) are fixedly sleeved inside the top rod (5), the outer surfaces of the inlet pipe (7) and the return pipe (8) are fixedly sleeved inside the fixed block (3), the outer surface of the rear end of the inlet pipe (7) is fixedly sleeved inside the bottom end of the front of the water tank (1), a water pump (9) is fixedly installed at the rear end of the inlet pipe (7), a cooling pipe (10) is fixedly installed at the rear end of the return pipe (8), and the outer surface of the rear end of the cooling pipe (10) is fixedly sleeved inside the top end of the water tank (1).

2. The silicon carbide push rod cooling device for seamless steel pipe manufacturing according to claim 1, characterized in that: The outer surface of the cooling pipe (10) is fixedly fitted with fins (11), and the bottom end of the fins (11) is fixedly connected to the top end of the water tank (1).

3. The silicon carbide push rod cooling device for seamless steel pipe manufacturing according to claim 2, characterized in that: A heat-absorbing tube (12) is fixedly sleeved inside the fin (11). The outer surface of the heat-absorbing tube (12) is fixedly sleeved inside the top of the water tank (1). The heat-absorbing tube (12) is made of copper.

4. The silicon carbide push rod cooling device for seamless steel pipe manufacturing according to claim 1, characterized in that: The top of the left and right sides of the water tank (1) is fixedly installed with a fixed frame (13), the top of the fixed frame (13) is fixedly installed with a bracket (14), the top of the bracket (14) is fixedly installed with a motor (15), and the other end of the output shaft of the motor (15) is fixedly sleeved with a rotating shaft (16).

5. A silicon carbide push rod cooling device for seamless steel pipe manufacturing according to claim 4, characterized in that: A drive gear (17) is fixedly sleeved on the bottom of the outer surface of the shaft (16), and a driven gear (18) is meshed on the outer surface of the drive gear (17).

6. The silicon carbide push rod cooling device for seamless steel pipe manufacturing according to claim 5, characterized in that: The driven gear (18) is fixedly sleeved with a vertical shaft (19), the outer surface of the vertical shaft (19) is movably sleeved with the inner top of the fixed frame (13), and the bottom end of the outer surface of the vertical shaft (19) is fixedly sleeved with a fan blade (20).

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