Seamless bent pipe hot bending equipment with uniform heating function

Abstract

The utility model discloses a seamless bent pipe hot bending device with uniform heating, which comprises a base and a bending mechanism, the base is provided with a propelling mechanism, a limiting mechanism, a water cooling mechanism and an electromagnetic induction heating mechanism, the electromagnetic induction heating mechanism comprises a medium-frequency heating assembly and a high-frequency heating assembly, the bending mechanism comprises a hoop assembly, and the hoop assembly is provided with a clamping groove. The hoop assembly is fixedly arranged at one end of the pipe body in a sleeving manner; the two sets of heating assemblies heat a pipe body twice in the pushing process of the pipe body, so that the heating uniformity of the pipe body is improved, the phenomenon that the temperature of the inner side or the bent inner side of the pipe body is not uniform is prevented, and the hot bending quality of the seamless bent pipe is improved; cooling water is sprayed out in a circumferential dispersion mode through the multiple sets of water spray nozzles of the water inlet ring, comprehensive water cooling is carried out on the bent steel pipe part, the pipe body is cooled to the room temperature, the pipe body is kept in the needed shape, and cooling is uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless pipe hot bending, in particular to a seamless pipe hot bending device with uniform heating. Background Technique

[0002] When seamless pipes are actually used, they are widely applied. Seamless pipes for general purposes are rolled from low-alloy structural steel, alloy structural steel, or ordinary carbon structural steel. Seamless pipes are widely used in the fields of electric power, petroleum, navigation, chemical industry, etc., mainly for oil transportation and natural gas transportation, and play an important role in aircraft and their engines. During the production process of seamless pipes, the metal pipes are heated by a hot bending device to make seamless pipes.

[0003] During the hot bending process of seamless pipes, uneven heating of the pipe body or improper watering and cooling will cause uneven temperature inside the pipe or inside the bend, which will directly affect the production quality of seamless pipes. Content of the Utility Model

[0004] The purpose of the utility model is to provide a seamless pipe hot bending device with uniform heating to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A seamless pipe hot bending device with uniform heating, including a base and a bending mechanism. A propulsion mechanism, a limiting mechanism, a water cooling mechanism, and an electromagnetic induction heating mechanism are arranged on the base. The electromagnetic induction heating mechanism includes an intermediate frequency heating component and a high frequency heating component. The bending mechanism includes a clamp component, and the clamp component is fixedly sleeved on one end of the pipe body.

[0006] Among them, the propulsion mechanism includes two groups of rollers and two groups of motors. The output shafts of the two groups of motors are respectively fixed to the two groups of rollers through couplings.

[0007] Among them, the two groups of rollers rotate in opposite directions, and a propulsion channel is formed between the two groups of rollers.

[0008] Among them, the limiting mechanism includes two groups of hydraulic cylinders, and one end of the push rods of the two groups of hydraulic cylinders is fixedly connected with a limiting block.

[0009] Among them, an arc-shaped groove is opened on the inner side surface of the limiting block.

[0010] Among them, the water cooling mechanism includes a main water inlet pipe. One end of the main water inlet pipe is connected to a water inlet ring, and multiple groups of spray nozzles are arranged on the water inlet ring.

[0011] Among them, multiple groups of the water spray nozzles are evenly arranged at intervals along the circumferential direction of the water inlet ring, and multiple groups of the water spray nozzles are all inclined towards the center of the water inlet ring. The main water inlet pipe is connected to the water pump assembly.

[0012] Among them, the electromagnetic induction heating mechanism includes a frame, and both the intermediate frequency heating assembly and the high frequency heating assembly are fixedly arranged on the frame.

[0013] Among them, the bending mechanism includes a rotating seat, one end of the rotating seat is connected to a driving arm, and one end of the driving arm is connected to a clamp assembly.

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

[0015] 1. The intermediate frequency heating assembly and the high frequency heating assembly of the present utility model jointly constitute an electromagnetic induction heating mechanism. The pipe body is heated by the electromagnetic induction heating mechanism. During the process of the pipe body being pushed forward, the two heating assemblies heat the pipe body twice, so as to improve the heating uniformity of the pipe body, prevent the phenomenon of uneven temperature inside the pipe body or inside the bend, and improve the hot bending quality of the seamless bend pipe.

[0016] 2. The cooling water of the present utility model is sprayed out in a circumferentially dispersed manner through multiple groups of water spray nozzles of the water inlet ring, and comprehensively cools the bent part of the steel pipe, cools the pipe body to room temperature, enables the pipe body to maintain the required shape, and the cooling is uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic side view structure diagram of the present utility model;

[0018] Figure 2 is a schematic side view structure diagram of the other side of the present utility model;

[0019] Figure 3 is a schematic structure diagram of the intermediate frequency heating assembly and the high frequency heating assembly of the present utility model;

[0020] Figure 4 is a schematic structure diagram of the water cooling mechanism of the present utility model.

[0021] In the figure: 1. Base; 2. Propelling mechanism; 3. Limiting mechanism; 4. Water cooling mechanism; 5. Electromagnetic induction heating mechanism; 6. Bending mechanism; 7. Pipe body; 21. Roller; 22. Motor; 31. Hydraulic cylinder; 32. Limiting block; 41. Main water inlet pipe; 42. Water inlet ring; 43. Water spray nozzle; 51. Frame; 52. Intermediate frequency heating assembly; 53. High frequency heating assembly; 61. Rotating seat; 62. Driving arm; 63. Clamp assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-4 , the present invention provides a technical solution: a seamless elbow hot bending device with uniform heating, including a base 1 and a bending mechanism 6. A propulsion mechanism 2, a limiting mechanism 3, a water cooling mechanism 4, and an electromagnetic induction heating mechanism 5 are arranged on the base 1. The electromagnetic induction heating mechanism 5 includes an intermediate frequency heating component 52 and a high frequency heating component 53. The bending mechanism 6 includes a clamp component 63. The clamp component 63 is fixedly sleeved on one end of the pipe body 7. The propulsion mechanism 2 is used for propulsion, the limiting mechanism 3 is used to limit the pipe body 7 to prevent the pipe body 7 from shifting during hot bending, the water cooling mechanism 4 is used for water cooling to cool the pipe body 7, the electromagnetic induction heating mechanism 5 heats the pipe body 7, and the bending mechanism 6 drives one end of the pipe body 7 to bend the pipe body 7 into a seamless elbow structure.

[0024] Among them, the intermediate frequency heating component 52 and the high frequency heating component 53 together constitute the electromagnetic induction heating mechanism 5. The pipe body 7 is heated by the electromagnetic induction heating mechanism 5. During the process of the pipe body 7 being propelled, the two heating components heat the pipe body 7 twice to improve the heating uniformity of the pipe body 7 and prevent the phenomenon of uneven temperature inside the pipe body 7 or inside the bend, thereby improving the hot bending quality of the seamless elbow.

[0025] Both the intermediate frequency heating component 52 and the high frequency heating component 53 include an electromagnetic heating control board and a heating coil. The electromagnetic induction heating mechanism 5 utilizes the conversion between electricity, magnetism, and thermal energy to make the heated object generate heat by itself, realizing the heating of the pipe body 7. The pipe body 7 passes through the coil to achieve comprehensive heating, further improving the heating uniformity of the pipe body 7.

[0026] Among them, the propulsion mechanism 2 includes two groups of rollers 21 and two groups of motors 22. The output shafts of the two groups of motors 22 are respectively fixed to the two groups of rollers 21 through couplings.

[0027] Among them, the two groups of rollers 21 rotate in opposite directions, and a propulsion channel is formed between the two groups of rollers 21.

[0028] Among them, the two groups of motors 22 respectively drive the two groups of rollers 21 to rotate. The two groups of rollers 21 convert the rotational force into a linear driving force to drive the linear movement of the pipe body 7, thereby realizing the propulsion of the pipe body 7.

[0029] Among them, the limiting mechanism 3 includes two sets of hydraulic cylinders 31. One end of the push rods of the two sets of hydraulic cylinders 31 is fixedly connected to a limiting block 32. When the hydraulic cylinder 31 works, it drives the limiting block 32 at one end to move. The two limiting blocks 32 approach each other to form the limiting mechanism 3, and the pipe body 7 is limited by the limiting mechanism 3.

[0030] Among them, an arc-shaped groove is formed on the inner side surface of the limiting block 32, and the arc-shaped grooves of the two limiting blocks 32 together form a limiting groove structure.

[0031] Among them, the water cooling mechanism 4 includes a main water inlet pipe 41. One end of the main water inlet pipe 41 is connected to a water inlet ring 42, and a plurality of spray nozzles 43 are arranged on the water inlet ring 42.

[0032] Among them, the plurality of spray nozzles 43 are arranged at equal intervals along the circumferential direction of the water inlet ring 42, and the plurality of spray nozzles 43 are all inclined towards the center of the water inlet ring 42. The main water inlet pipe 41 is connected to a water pump assembly.

[0033] Among them, when the water pump assembly works, cooling water is introduced into the main water inlet pipe 41. The cooling water enters the water inlet ring 42 through the main water inlet pipe 41, and finally is sprayed out in a circumferential dispersion manner through the plurality of spray nozzles 43 of the water inlet ring 42, comprehensively water-cooling the bent steel pipe part, cooling the pipe body 7 to room temperature, and keeping the pipe body 7 in the required shape.

[0034] Among them, the electromagnetic induction heating mechanism 5 includes a frame 51. The intermediate frequency heating assembly 52 and the high frequency heating assembly 53 are both fixedly arranged on the frame 51, and the pipe body 7 is heated twice by the intermediate frequency heating assembly 52 and the high frequency heating assembly 53.

[0035] Among them, the bending mechanism 6 includes a rotating seat 61. One end of the rotating seat 61 is connected to a driving arm 62, one end of the driving arm 62 is connected to a clamp assembly 63, a rotating motor is built in the rotating seat 61, the rotating motor works to drive the driving arm 62 at one end, drives the clamp assembly 63 through the driving arm 62, and drives one end of the pipe body 7 through the clamp assembly 63.

[0036] Among them, the bending mechanism 6 exerts a mechanical force on the pipe body 7. After the pipe body 7 reaches an appropriate bending temperature, an external force is applied through the bending mechanism 6 to make the pipe body 7 bend according to a predetermined bending radius for hot bending processing. The bent steel pipe part is quickly cooled with cooling water by the water cooling mechanism 4, and the overall hot bending equipment heats, advances, bends, and cools while operating.

[0037] Working principle: One end of the pipe body 7 passes through the propulsion channel of the propulsion mechanism 2, the limiting groove of the limiting mechanism 3, the water inlet ring 42 of the water cooling mechanism 4, and the heating coil of the electromagnetic induction heating mechanism 5, and is fastened to the clamp assembly 63 of the bending mechanism 6. During hot bending, the pipe body 7 is heated by the electromagnetic induction heating mechanism 5. The two sets of rollers 21 of the propulsion mechanism 2 convert the rotational force into a linear driving force to drive the linear movement of the pipe body 7, realizing the propulsion of the pipe body 7. The pipe body 7 is limited by the limiting mechanism 3. The bending mechanism 6 exerts a mechanical force on the pipe body 7. After the pipe body 7 reaches the appropriate bending temperature, an external force is applied by the bending mechanism 6 to make the pipe body 7 bend according to the predetermined bending radius for hot bending processing. The bent part of the steel pipe is quickly cooled by the cooling water through the water cooling mechanism 4. The overall hot bending equipment heats, propels, bends, and cools simultaneously.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seamless pipe bending device with uniform heating, comprising a base (1) and a bending mechanism (6), characterized in that: The base (1) is provided with a propulsion mechanism (2), a limiting mechanism (3), a water cooling mechanism (4) and an electromagnetic induction heating mechanism (5); the electromagnetic induction heating mechanism (5) comprises a medium frequency heating component (52) and a high frequency heating component (53); the bending mechanism (6) comprises a clamping assembly (63); and the clamping assembly (63) is fixedly sleeved on one end of the tube body (7).

2. The seamless pipe bending equipment with uniform heating according to claim 1 is characterized in that: The propulsion mechanism (2) comprises two groups of rollers (21) and two groups of motors (22), and the output shafts of the two groups of motors (22) are respectively fixed to the two groups of rollers (21) via couplings.

3. The seamless pipe bending equipment with uniform heating according to claim 2 is characterized in that: The two groups of rollers (21) rotate in opposite directions, and a propulsion channel is formed between the two groups of rollers (21).

4. The seamless pipe bending equipment with uniform heating according to claim 1 is characterized in that: The limiting mechanism (3) comprises two groups of hydraulic cylinders (31), and one end of the push rods of the two groups of hydraulic cylinders (31) are fixedly connected to the limiting blocks (32).

5. The seamless pipe bending equipment with uniform heating according to claim 4 is characterized in that: An arc-shaped groove is provided on the inner side surface of the limiting block (32).

6. The seamless pipe bending equipment with uniform heating according to claim 1 is characterized in that: The water cooling mechanism (4) comprises a main water inlet pipe (41), one end of which is connected to a water inlet ring (42), and a plurality of groups of water spray nozzles (43) are arranged on the water inlet ring (42).

7. The seamless pipe bending equipment with uniform heating according to claim 6 is characterized by: The plurality of groups of water spray nozzles (43) are evenly spaced along the circumferential direction of the water inlet circle (42), and the plurality of groups of water spray nozzles (43) are inclined toward the center of the water inlet circle (42). The main water inlet pipe (41) is connected to a water pump assembly.

8. The seamless pipe bending equipment with uniform heating according to claim 1 is characterized by: The electromagnetic induction heating mechanism (5) comprises a frame (51), and the medium frequency heating component (52) and the high frequency heating component (53) are both fixedly arranged on the frame (51).

9. The seamless pipe bending equipment with uniform heating according to claim 1, characterized in that: The bending mechanism (6) comprises a rotating seat (61), one end of the rotating seat (61) is connected to a driving arm (62), and one end of the driving arm (62) is connected to a clamp assembly (63).

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