Centrifugal casting device for large-diameter seamless steel pipe

Abstract

The utility model discloses a centrifugal casting device for a large-diameter seamless steel pipe, and relates to the technical field of centrifugal casting devices. Comprising a centrifugal structure; the outer wall of the buffer structure is fixedly connected with the outer wall of the centrifugal structure; the bottom of the cooling structure is fixedly connected with the top of the centrifugal structure; the buffer structure comprises a base, a rubber pad and a first spring are symmetrically and fixedly connected to the top of the base, the top of the rubber pad is fixedly connected with the centrifugal structure, and a damper and a second spring are symmetrically and fixedly connected to the side wall of the base; the ends, away from the base, of the dampers and the second springs are fixedly connected with the side wall of the centrifugal structure, vibration and shaking of the centrifugal barrel can be effectively restrained in the centrifugal casting process, and the rubber pads and the first springs work cooperatively to absorb vibration energy in the vertical direction. The damper and the second spring are in tacit cooperation, and vibration interference in the horizontal direction is eliminated.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal casting device technical field, concretely relates to a centrifugal casting device of large diameter seamless steel pipe. BACKGROUND

[0002] In the modern industrial field, as the key basic material, large diameter seamless steel pipe is widely used in petroleum transportation, natural gas pipeline, large building structure and mechanical manufacturing and many important industries, with the rapid development of various industries, the quality, production efficiency and performance stability of large diameter seamless steel pipe are increasingly strict requirements, in the traditional seamless steel pipe casting process, the centrifugal link causes the violent shaking and vibration of the centrifugal cylinder when rotating at high speed, which not only seriously interferes with the uniform distribution of molten steel under the action of centrifugal force, causes the uneven wall thickness of steel pipe, loose structure and other quality defects, but also shortens the service life of equipment, frequent maintenance and high production cost, in view of the above, in order to solve the vibration generated in the buffering centrifugal link, reduce the loss, the utility model emerges as the times require. SUMMARY

[0003] In view of the defects of the prior art, the utility model solves the technical problems by adopting the following technical scheme: a centrifugal casting device of large diameter seamless steel pipe, comprising: a centrifugal structure; a buffer structure, the outer wall of the buffer structure is fixedly connected with the outer wall of the centrifugal structure; a cooling structure, the bottom of the cooling structure is fixedly connected with the top of the centrifugal structure; the buffer structure comprises a base, the top of the base is fixedly connected with rubber pads and first springs in a symmetrical manner, the top of the rubber pad is fixedly connected with the centrifugal structure, the side wall of the base is fixedly connected with dampers and second springs in a symmetrical manner, and the ends, away from the base, of the dampers and the second springs are fixedly connected with the side wall of the centrifugal structure.

[0004] Preferably, the centrifugal structure comprises a support plate, the top of the support plate is fixedly connected with a driving motor, and the inner wall of the support plate is rotatably connected with a first gear, a second gear and a centrifugal cylinder, which can effectively inhibit the vibration and shaking of the centrifugal cylinder during the centrifugal casting process, and the rubber pads and the first springs work cooperatively to absorb the vertical vibration energy; the dampers and the second springs cooperate to resolve the horizontal vibration interference.

[0005] Preferably, the output shaft of the driving motor is fixedly connected with the outer wall of the first gear, the first gear is engaged with the second gear, and the outer wall of the second gear is fixedly connected with the outer wall of the centrifugal cylinder.

[0006] Preferably, the outer wall of the rubber pads and the first springs at the bottom of the support plate is fixedly connected, and the outer wall of the dampers and the second springs at the side wall of the support plate is fixedly connected.

[0007] Preferably, the cooling structure comprises a spray head, an outer wall of the spray head is fixedly connected with a support frame, and a bottom of the spray head is provided with a water storage tank.

[0008] Preferably, an inner wall of the water storage tank is slidably connected with a filter plate, the bottom of the water storage tank is fixedly connected with the top of the support plate, the spray head is arranged along an outer annular array of the centrifugal cylinder, and the spray head of the cooling structure is arranged in an annular array, so that the centrifugal cylinder is fully covered by the spray head to spray the cooling liquid, there is no cooling dead angle, and heat conducted to the cylinder wall by the molten steel can be efficiently taken away.

[0009] The centrifugal casting device has the following beneficial effects:

[0010] 1. The centrifugal casting device can effectively inhibit the vibration and shaking of the centrifugal cylinder during the centrifugal casting process through the buffer structure, the rubber pad and the first spring work cooperatively to absorb the vertical vibration energy, and the damper and the second spring cooperate to resolve the horizontal vibration interference.

[0011] 2. The centrifugal casting device is provided with the cooling structure, the spray head of the cooling structure is arranged in an annular array, the centrifugal cylinder is fully covered by the spray head to spray the cooling liquid, there is no cooling dead angle, heat conducted to the cylinder wall by the molten steel can be efficiently taken away, the filter plate in the water storage tank guarantees the purity and smooth circulation of the cooling liquid, and ideal temperature is provided for the solidification of the large-diameter seamless steel pipe. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic view of the centrifugal casting device;

[0013] Figure 2 is a structural schematic view of the centrifugal structure of the centrifugal casting device;

[0014] Figure 3 is a structural schematic view of the buffer structure of the centrifugal casting device;

[0015] Figure 4 is a structural schematic view of the cooling structure of the centrifugal casting device.

[0016] In the drawings: 1, centrifugal structure; 2, buffer structure; 3, cooling structure; 11, driving motor; 12, support plate; 13, first gear; 14, second gear; 15, centrifugal cylinder; 21, base; 22, rubber pad; 23, first spring; 24, damper; 25, second spring; 31, spray head; 32, support frame; 33, filter plate; 34, water storage tank. DETAILED DESCRIPTION

[0017] The embodiments of the present application are given for illustration and description only, and are not intended to be exhaustive or to limit the present application to the precise form disclosed. Many modifications and variations are possible in light of this disclosure. The embodiments are chosen and described in order to best explain the principles of the present application and its practical application to thereby enable others skilled in the art to best utilize the present application, various embodiments with various modifications as are suited to the particular use contemplated.

[0018] Embodiment

[0019] Please refer to Figure 1 - Figure 4 The utility model provides a technical scheme: a centrifugal casting device of large caliber seamless steel pipe, it includes: centrifugal structure 1, buffer structure 2 is fixedly connected with the outer wall of centrifugal structure 1 in buffer structure 2's outer wall, cooling structure 3, cooling structure 3's bottom is fixedly connected with the top of centrifugal structure 1, buffer structure 2 includes base 21, and the top of base 21 is fixedly connected with rubber pad 22 and first spring 23 in symmetry, and the top of rubber pad 22 is fixedly connected with centrifugal structure 1, and the lateral wall of base 21 is fixedly connected with damper 24 and second spring 25 in symmetry, and the end of damper 24 and second spring 25 away from base 21 is fixedly connected with the lateral wall of centrifugal structure 1, when using, buffer structure 2 guarantees centrifugal casting steady operation all the way, in the high -speed rotation process of centrifugal cylinder 15, inevitably produces vibration and sway, at this moment, the rubber pad 22 and first spring 23 of base 21 top symmetry play a role, and rubber pad 22 absorbs the vibration energy from centrifugal cylinder 15 vertical direction by its good elasticity, and first spring 23 is synchronous telescopic, and auxiliary buffering, shock absorption, and the damper 24 of base 21 lateral wall utilizes internal damping medium to consume horizontal direction vibration energy quickly, and the sway amplitude is inhibited, and the second spring 25 telescopic cooperation reduces the unstable factor caused by centrifugal motion in multidimension, ensures the stability of device, avoids the influence steel pipe forming quality.

[0020] Centrifugal structure 1 includes support plate 12, and the top of support plate 12 is fixedly connected with driving motor 11, and the inner wall of support plate 12 is rotatably connected with first gear 13, second gear 14 and centrifugal cylinder 15.

[0021] The output shaft of driving motor 11 is fixedly connected with the outer wall of first gear 13, and first gear 13 is engaged with second gear 14, and the outer wall of second gear 14 is fixedly connected with the outer wall of centrifugal cylinder 15.

[0022] The bottom rubber pad 22 of the support plate 12 is fixedly connected with the outer wall of the first spring 23, and the side wall of the support plate 12 is fixedly connected with the outer wall of the damper 24 and the second spring 25. In use, the driving motor 11 in the centrifugal structure 1 is started first, and the driving motor 11 is operated, and the output shaft drives the first gear 13 fixedly connected therewith to rotate synchronously. Since the first gear 13 and the second gear 14 are meshed with each other, the rotation of the first gear 13 drives the second gear 14 to rotate, and in turn drives the centrifugal cylinder 15 fixedly connected with the outer wall of the second gear 14 to rotate at high speed on the inner wall of the support plate 12, thereby providing a key power basis for subsequent centrifugal casting of molten steel.

[0023] The cooling structure 3 comprises a spray head 31, and a support frame 32 is fixedly connected to the outer wall of the spray head 31. The bottom of the spray head 31 is provided with a water storage tank 34.

[0024] The inner wall of the water storage tank 34 is slidably connected with a filter plate 33, and the bottom of the water storage tank 34 is fixedly connected with the top of the support plate 12. The spray head 31 is arranged in a ring array outside the centrifugal cylinder 15. In use, the cooling structure 3 is responsible for controlling the temperature during casting. The spray head 31 is arranged in a ring array outside the centrifugal cylinder 15, which can cover the centrifugal cylinder 15 in all directions. After the casting starts, the cooling liquid stored in the water storage tank 34 is delivered to the spray head 31 through the support frame 32 under the action of the water pump, and the spray head 31 uniformly sprays the cooling liquid on the surface of the centrifugal cylinder 15, which carries away the heat conducted to the cylinder wall due to the high temperature of the molten steel, thereby achieving cooling. The filter plate 33 slidably connected to the inner wall of the water storage tank 34 can intercept impurities in the cooling liquid in real time, prevent the spray head 31 from being blocked, ensure that the cooling liquid is continuously and smoothly sprayed out, maintain the cooling effect, and help the large-diameter seamless steel pipe to be solidified and formed in a suitable temperature environment.

[0025] Working principle:

[0026] In use, the driving motor 11 in the centrifugal structure 1 is started first, and the driving motor 11 is operated, and the output shaft drives the first gear 13 fixedly connected therewith to rotate synchronously. Since the first gear 13 and the second gear 14 are meshed with each other, the rotation of the first gear 13 drives the second gear 14 to rotate, and in turn drives the centrifugal cylinder 15 fixedly connected with the outer wall of the second gear 14 to rotate at high speed on the inner wall of the support plate 12, thereby providing a key power basis for subsequent centrifugal casting of molten steel.

[0027] In use, the buffer structure 2 guarantees smooth running of the centrifugal casting, and the rubber pads 22 and the first springs 23 on the top of the base 21 play a role in the process of high-speed rotation of the centrifugal cylinder 15, the rubber pads 22 absorb the vibration energy from the vertical direction of the centrifugal cylinder 15 by virtue of their good elasticity, the first springs 23 stretch and contract synchronously to assist buffering and shock absorption, the dampers 24 on the sidewall of the base 21 quickly consume the horizontal vibration energy by using the internal damping medium to inhibit the shaking amplitude, and the second springs 25 stretch and contract to cooperate to reduce the unstable factors caused by the centrifugal motion in multiple dimensions, so as to ensure the stability of the device and avoid affecting the forming quality of the steel pipe.

[0028] In use, the cooling structure 3 is responsible for temperature control during casting, the spray heads 31 are arranged in a ring array along the outside of the centrifugal cylinder 15 and can cover the centrifugal cylinder 15 in all directions, after the casting starts, the cooling liquid stored in the water storage tank 34 is delivered to the spray heads 31 through the support frame 32 under the action of the water pump, the spray heads 31 uniformly spray the cooling liquid on the surface of the centrifugal cylinder 15 to take away the heat conducted to the cylinder wall due to the high temperature of the molten steel, so as to realize cooling, the filter plates 33 slidingly connected to the inner wall of the water storage tank 34 can intercept impurities in the cooling liquid in real time to prevent the spray heads 31 from being blocked, so as to ensure that the cooling liquid is continuously and smoothly sprayed out to maintain the cooling effect and help the large-diameter seamless steel pipe to be solidified and formed under the suitable temperature environment.

[0029] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and related fields without creative labor should belong to the scope of protection of the present application. The structures, devices and operation methods not specifically described and explained in the present application, such as without special description and limitation, are implemented according to the conventional means in the art.

Claims

1. A centrifugal casting device for large-diameter seamless steel pipes, characterized in that, include: Centrifugal structure (1); A buffer structure (2) is provided, wherein the outer wall of the buffer structure (2) is fixedly connected to the outer wall of the centrifugal structure (1); Cooling structure (3), the bottom of which is fixedly connected to the top of centrifugal structure (1); The buffer structure (2) includes a base (21), on which a rubber pad (22) and a first spring (23) are symmetrically fixedly connected. The top of the rubber pad (22) is fixedly connected to the centrifugal structure (1). A damper (24) and a second spring (25) are symmetrically fixedly connected to the side wall of the base (21). The end of the damper (24) and the second spring (25) away from the base (21) is fixedly connected to the side wall of the centrifugal structure (1).

2. The centrifugal casting device for large-diameter seamless steel pipes according to claim 1, characterized in that: The centrifugal structure (1) includes a support plate (12), a drive motor (11) is fixedly connected to the top of the support plate (12), and a first gear (13), a second gear (14) and a centrifugal cylinder (15) are rotatably connected to the inner wall of the support plate (12).

3. The centrifugal casting device for large-diameter seamless steel pipes according to claim 2, characterized in that: The output shaft of the drive motor (11) is fixedly connected to the outer wall of the first gear (13), the first gear (13) meshes with the second gear (14), and the outer wall of the second gear (14) is fixedly connected to the outer wall of the centrifuge cylinder (15).

4. The centrifugal casting device for large-diameter seamless steel pipes according to claim 2, characterized in that: The bottom rubber pad (22) of the support plate (12) is fixedly connected to the outer wall of the first spring (23), and the side wall of the support plate (12) is fixedly connected to the outer wall of the damper (24) and the second spring (25).

5. The centrifugal casting device for large-diameter seamless steel pipes according to claim 1, characterized in that: The cooling structure (3) includes a nozzle (31), a support frame (32) is fixedly connected to the outer wall of the nozzle (31), and a water storage tank (34) is provided at the bottom of the nozzle (31).

6. The centrifugal casting device for large-diameter seamless steel pipes according to claim 5, characterized in that: The inner wall of the water storage tank (34) is slidably connected to a filter plate (33), the bottom of the water storage tank (34) is fixedly connected to the top of the support plate (12), and the nozzles (31) are arranged in a ring along the outer side of the centrifuge cylinder (15).

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