Curing furnace equipment for anti-corrosion petroleum pipe

Abstract

The utility model relates to curing oven equipment for an anti-corrosion petroleum pipe, which comprises a horizontal curing oven bin, a conveying support component and a pipe outside drying component, and is characterized in that a plurality of conveying brackets are arranged in the lower part of the horizontal curing oven bin, and the conveying support component comprises conveying roller groups which are in one-to-one correspondence with the conveying brackets and are connected with the conveying brackets; the two ends of a roller shaft of the conveying roller set are led out of the two sides of the conveying supports respectively, a first lifting mechanism corresponding to the roller shaft is arranged at the bottom of the horizontal curing oven bin, a driving support is fixed between every two adjacent conveying supports, a rotary driving roller set is arranged on each driving support, and each rotary driving roller set comprises two rotary riding wheels symmetrically located below the petroleum pipe. A second lifting mechanism is arranged on the outer side of the rear end of the horizontal curing furnace bin, an in-pipe drying spray head is fixed to the free end of the second lifting mechanism, and a nozzle of the in-pipe drying spray head is used for facing the inner side wall of the front end of the petroleum pipe. According to the equipment, the drying and curing uniformity and the curing efficiency are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the technical field of oil pipeline production equipment, specifically to a curing furnace device for corrosion-resistant oil pipes. Background Technology

[0002] Although the rapid development of the petroleum industry has led to a significant increase in the application of oil pipelines, it has also placed higher demands on the quality and performance of these pipelines. Corrosion resistance is of paramount importance, as improved corrosion resistance prevents pipeline leaks during long-term use, extends service life, and greatly reduces resource waste. Therefore, oil pipelines require anti-corrosion treatment after production, and the anti-corrosion layer is dried and cured in a curing oven.

[0003] For example, CN 212058246 U discloses a double-layer curing oven for curing anti-corrosion oil pipes. It includes an oven body, supporting legs, a conveying mechanism, a through-slot, a heating mechanism, a waste heat recovery mechanism, and a control panel. The conveying mechanism is located on the outer side of the bottom of the oven body, and through-slots are carved on both sides of the oven body. A heating mechanism is located on the outer side of the oven body adjacent to the through-slots, and a waste heat recovery mechanism is located on the top of the oven body. This curing oven uses a heating mechanism inside the oven body to cure the anti-corrosion oil pipes inside. Simultaneously, the waste heat recovery mechanism reheats the waste heat generated inside the oven body and recirculates it back into the oven body for reuse, aiming to achieve recycling and reduce energy waste. However, the following problems still exist: 1. Hot air is sprayed from the outside of the anti-corrosion oil pipe to achieve the curing operation, but oil pipes are generally thick, resulting in low curing efficiency for the anti-corrosion layer on the inner surface of the oil pipe; 2. Although there are nozzles pointing towards the oil pipe from the top, bottom, left, and right, there are still heating differences for the circumferentially stationary oil pipe, affecting the uniformity of curing. Utility Model Content

[0004] The purpose of this invention is to provide a curing oven for corrosion-resistant oil pipes that has a reasonable structure and reliable operation, which solves the above problems and significantly improves the uniformity of drying and curing as well as the curing efficiency.

[0005] The technical solution of this utility model is:

[0006] A curing furnace for corrosion-resistant oil pipes includes a horizontal curing furnace chamber, a conveying support assembly, and an external drying assembly. The front and rear ends of the horizontal curing furnace chamber are provided with pipe inlets and outlets. The key technical features are: multiple conveying supports are built into the lower part of the horizontal curing furnace chamber along its length; the conveying support assembly includes conveying roller sets corresponding to and connected to each conveying support; the roller shafts of the conveying roller sets are perpendicular to the conveying direction of the oil pipe, and both ends of the roller shafts extend out to both sides of the conveying supports; the bottom of the horizontal curing furnace chamber is provided with a first lifting mechanism corresponding to the roller shafts. The upper surface of the conveying support is provided with a U-shaped groove corresponding to the roller shaft. A drive support is fixed between two adjacent conveying supports and a rotating drive roller assembly is provided on the drive support. The rotating drive roller assembly includes two rotating rollers symmetrically located below the oil pipe. The axle of the rotating rollers is perpendicular to the roller shaft of the conveying roller assembly. The external drying assembly is located on the top surface inside the horizontal curing furnace chamber. A second lifting mechanism is provided on the outer rear end of the horizontal curing furnace chamber. An internal drying nozzle is fixed at the free end of the second lifting mechanism. The nozzle of the internal drying nozzle is directed toward the inner wall of the front end of the oil pipe.

[0007] The aforementioned curing oven equipment for corrosion-resistant oil pipes includes an external drying assembly comprising a semi-circular hollow heating chamber fixed to the top surface of the horizontal curing oven chamber and a matrix of heating gas nozzles arranged on the lower surface of the semi-circular hollow heating chamber. The top of the horizontal curing oven chamber is provided with an air inlet communicating with the semi-circular hollow heating chamber, and each air inlet is connected to a heating gas injection pipeline.

[0008] The aforementioned curing furnace equipment for corrosion-resistant oil pipes includes a hanging frame at the top rear end of the horizontal curing furnace chamber. The second lifting mechanism is a lifting cylinder, which is placed upside down on the hanging frame. The lower end of the cylinder rod of the lifting cylinder is connected and fixed to the drying nozzle inside the pipe. The air inlet end of the drying nozzle inside the pipe is connected to the heating gas injection pipeline.

[0009] In the aforementioned curing furnace equipment for corrosion-resistant oil pipes, the first lifting mechanism is a lifting cylinder, and a support block is fixed to the upper end of the cylinder rod of the lifting cylinder. The upper surface of the support block is provided with an arc-shaped support groove that matches the roller shaft.

[0010] The aforementioned curing furnace equipment for corrosion-resistant oil pipes has gas collection chambers built into the front and rear sides of the lower part of the horizontal curing furnace chamber. The upper surface of the gas collection chamber is provided with an air intake port, and the gas collection chamber is connected to an external negative pressure pipeline.

[0011] The aforementioned curing furnace equipment for corrosion-resistant oil pipes includes a drive motor reducer located below the drive support, a driven sprocket fixed on the axle of one of the rotating rollers in the same rotating drive roller group, and a drive sprocket for connecting to the driven sprocket located on the output shaft of the drive motor reducer.

[0012] The aforementioned curing oven equipment for corrosion-resistant oil pipes includes a conveyor roller group comprising two conveyor rollers spaced apart on a roller shaft, with the two conveyor rollers of the same conveyor roller group symmetrically located below the oil pipe.

[0013] The beneficial effects of this utility model are:

[0014] 1. By utilizing external drying components and internal drying nozzles, the external and internal surfaces of anti-corrosion oil pipes can be dried and cured simultaneously, significantly improving curing efficiency.

[0015] 2. To improve curing uniformity, after the oil pipe is fed into the horizontal curing oven chamber, the position of the conveying support assembly is lowered, so that the oil pipe falls above each rotating drive roller group. Driven by the rotating drive roller group, the oil pipe rotates around its center line, thereby achieving uniform drying of the outside of the oil pipe. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present invention before the curing process;

[0017] Figure 2 This is a schematic diagram of the structure during the curing process of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the rotary drive roller group supporting the drive oil pipe of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the conveyor roller assembly supporting the conveying oil pipe of this utility model.

[0020] In the diagram: 1. Heating gas injection pipeline, 2. Horizontal curing oven chamber, 3. Air inlet, 4. Semi-circular hollow heating chamber, 5. Matrix-shaped heating gas nozzle, 6. Oil pipe, 7. Hanger, 8. Second lifting mechanism, 9. In-pipe drying nozzle, 10. Pipe outlet, 11. Conveyor roller assembly, 12. Air intake, 13. Gas collection chamber, 14. External negative pressure pipeline, 15. Roller shaft, 16. Conveyor support, 17. First lifting mechanism, 18. Drive sprocket, 19. Drive motor reducer, 20. Drive support, 21. Rotary drive roller assembly, 22. Support block, 23. Driven sprocket, 24. Pipe inlet, 25. Axle. Detailed Implementation

[0021] The present invention will be described in detail with reference to the accompanying drawings.

[0022] like Figures 1-4 As shown, the curing furnace equipment for corrosion-resistant oil pipes includes a horizontal curing furnace chamber 2, a conveying support assembly, and an external drying assembly. The front and rear ends of the horizontal curing furnace chamber 2 are provided with a pipe inlet 24 and a pipe outlet 10.

[0023] The horizontal curing furnace chamber 2 has multiple conveying supports 16 built into its lower part along its length. The conveying support assembly includes conveying roller groups 11 that correspond one-to-one with and are connected to the conveying supports 16. The roller shafts 15 of the conveying roller groups 11 are perpendicular to the conveying direction of the oil pipe 6, and both ends of the roller shafts 15 extend out from both sides of the conveying supports 16. The bottom of the horizontal curing furnace chamber 2 is provided with a first lifting mechanism 17 corresponding to the roller shafts 15, and the upper surface of the conveying supports 16 is provided with a U-shaped groove corresponding to the roller shafts 15. In this embodiment, the first lifting mechanism 17 is a lifting cylinder, and a support block 22 is fixed to the upper end of the cylinder rod. The upper surface of the support block 22 is provided with an arc-shaped support groove matching the roller shaft 15. The conveying roller group 11 includes two conveying rollers spaced apart on the roller shaft 15, with the two conveying rollers of the same conveying roller group symmetrically located below the oil pipe 6.

[0024] A drive support 20 is fixed between two adjacent conveying supports 16, and a rotating drive roller assembly 21 is provided on the drive support 20. The rotating drive roller assembly 21 includes two rotating rollers symmetrically located below the oil pipe 6, and the axle 25 of the rotating rollers is perpendicular to the roller shaft 15 of the conveying roller assembly 11. In this embodiment, a drive motor reducer 19 is provided below the drive support 20, and a driven sprocket 23 is fixed on the axle 25 of one of the rotating rollers in the same rotating drive roller assembly 21. A drive sprocket 18 for connecting to the driven sprocket 23 is provided on the output shaft of the drive motor reducer 19.

[0025] The external drying assembly is located on the top surface inside the horizontal curing oven chamber 2. In this embodiment, the external drying assembly includes a semi-circular hollow heating cavity 4 fixed to the top surface inside the horizontal curing oven chamber 2 and a matrix of heating gas nozzles 5 arranged on the lower surface of the semi-circular hollow heating cavity 4. The top of the horizontal curing oven chamber 2 is provided with an air inlet 3 communicating with the semi-circular hollow heating cavity 4, and each air inlet 3 is connected to the heating gas injection pipeline 1.

[0026] A second lifting mechanism 8 is provided on the outer rear end of the horizontal curing furnace chamber 2. An in-pipe drying nozzle 9 is fixed to the free end of the second lifting mechanism 8. The nozzle of the in-pipe drying nozzle 9 is directed towards the inner wall of the front end of the oil pipe 6. In this embodiment, a hanger 7 is provided at the top rear end of the horizontal curing furnace chamber 2. The second lifting mechanism 8 is a lifting cylinder, which is inverted on the hanger 7. The lower end of the cylinder rod of the lifting cylinder is connected and fixed to the in-pipe drying nozzle 9. The air inlet end of the in-pipe drying nozzle 9 is connected to the heating gas injection pipeline 1.

[0027] In this embodiment, the horizontal curing oven chamber 2 has gas collection chambers 13 built into the front and rear sides of the lower part, and the gas collection chamber 13 has an air intake 12 on the upper surface. The gas collection chamber 13 is connected to an external negative pressure pipe 14.

[0028] Working principle:

[0029] 1. The oil pipe 6 is conveyed into the top of the conveying support assembly inside the horizontal curing furnace chamber 2 by an external conveying mechanism. At this time, the support blocks of the first lifting mechanism 17 jointly support the roller shaft 15 of the conveying roller group 11.

[0030] 2. The first lifting mechanism 17 drives the conveyor roller group 11 and the oil pipe 6 on it to move downward, so that the oil pipe 6 falls on the rotating drive roller group 21. The first lifting mechanism 17 drives the support block 22 to continue to move downward and disengage from the oil pipe 6.

[0031] 3. Start the drive motor reducer 19, and use the rotating support roller to drive the oil pipe 6 to rotate. At the same time, use the external drying component and the internal drying nozzle 9 to simultaneously dry and cure the exterior and interior of the anti-corrosion oil pipe 6. During this process, the external negative pressure pipe 14 forms a negative pressure in the gas collecting chamber 13, which introduces the gas sprayed from the external drying component and the internal drying nozzle 9 into the air intake, and then transmits it from the gas collecting chamber 13 to the external negative pressure pipe 14 for circulating heating and use.

[0032] 4. After cooling for the set time, the drying nozzle 9 inside the pipe is reset under the drive of the second lifting mechanism 8 and disengages from the pipe outlet 10 at the rear end of the horizontal curing oven chamber 2. At the same time, the support block 22 of the first lifting mechanism 17 moves upward again to support the roller shaft 15 of the conveyor roller group 11. After continuing to move upward, it lifts the conveyor roller group 11 and the oil pipe 6. The external traction mechanism pulls the oil pipe 6 out of the pipe outlet 10.

[0033] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this patent.

Claims

1. A curing furnace device for corrosion-resistant oil pipes, comprising a horizontal curing furnace chamber, a conveying support assembly, and an external drying assembly, wherein the front and rear ends of the horizontal curing furnace chamber are provided with a pipe inlet and a pipe outlet, characterized in that: The horizontal curing furnace chamber has multiple conveying supports built into its lower part along its length. The conveying support assembly includes conveying roller groups that correspond one-to-one with and are connected to the conveying supports. The roller shafts of the conveying roller groups are perpendicular to the conveying direction of the oil pipe, and the two ends of the roller shafts extend out to both sides of the conveying supports. The bottom of the horizontal curing furnace chamber is provided with a first lifting mechanism corresponding to the roller shaft. The upper end face of the conveying support is provided with a U-shaped groove corresponding to the roller shaft. A drive support is fixed between two adjacent conveying supports, and a rotating drive roller group is provided on the drive support. The rotating drive roller group includes two rotating rollers symmetrically located below the oil pipe. The axle of the rotating rollers is perpendicular to the roller shaft of the conveying roller group. The pipe drying assembly is located on the top surface inside the horizontal curing furnace chamber. A second lifting mechanism is provided on the outer rear end of the horizontal curing furnace chamber. The free end of the second lifting mechanism is fixed with a pipe drying nozzle. The nozzle of the pipe drying nozzle is directed toward the inner wall of the front end of the oil pipe.

2. The curing oven equipment for corrosion-resistant oil pipes according to claim 1, characterized in that: The external drying assembly includes a semi-circular hollow heating cavity fixed to the top surface of the horizontal curing oven chamber and a matrix of heating gas nozzles arranged on the lower surface of the semi-circular hollow heating cavity. The top of the horizontal curing oven chamber is provided with an air inlet that communicates with the semi-circular hollow heating cavity, and each air inlet is connected to a heating gas injection pipeline.

3. The curing oven equipment for corrosion-resistant oil pipes according to claim 1, characterized in that: The horizontal curing oven chamber is equipped with a hanger at the top rear end. The second lifting mechanism is a lifting cylinder, which is placed upside down on the hanger. The lower end of the cylinder rod of the lifting cylinder is connected and fixed to the drying nozzle inside the pipe. The air inlet end of the drying nozzle inside the pipe is connected to the heating gas injection pipeline.

4. The curing oven equipment for corrosion-resistant oil pipes according to claim 1, characterized in that: The first lifting mechanism is a lifting cylinder, and a support block is fixed at the upper end of the cylinder rod of the lifting cylinder. The upper surface of the support block is provided with an arc-shaped support groove that matches the roller shaft.

5. The curing oven equipment for corrosion-resistant oil pipes according to claim 1, characterized in that: The horizontal curing oven chamber has gas collection chambers built into the front and rear sides of the lower part, and the upper surface of the gas collection chamber is provided with a suction port. The gas collection chamber is connected to an external negative pressure pipeline.

6. The curing oven equipment for corrosion-resistant oil pipes according to claim 1, characterized in that: A drive motor reducer is provided below the drive support. A driven sprocket is fixed on the axle of one of the rotating rollers in the same rotating drive roller group. A drive sprocket for connecting with the driven sprocket is provided on the output shaft of the drive motor reducer.

7. The curing oven equipment for corrosion-resistant oil pipes according to claim 1, characterized in that: The conveyor roller group includes two conveyor rollers spaced apart on a roller shaft, with the two conveyor rollers of the same conveyor roller group symmetrically located below the oil pipe.

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