A 3PE composite steel pipe direct-rain water cooling device

Abstract

This utility model provides a 3PE composite steel pipe direct-rain water cooling device, relating to the field of steel pipe production technology. It includes a fixed base with a central positioning and fixing mechanism above it. The central positioning and fixing mechanism includes a fixed platform, the lower end of which is fixedly connected to the upper end of the fixed base. Through the central positioning and fixing mechanism, a first servo motor drives a worm gear and a worm wheel to mesh, thereby driving a bidirectional lead screw to rotate. This causes the first threaded block and the U-shaped moving rod to move, allowing the conical positioning block on the moving plate to accurately insert into the inner walls of both ends of the steel pipe, achieving internal support and centered fixation. Furthermore, through a reciprocating atomizing spray mechanism, the second threaded block and the annular water-guiding shell reciprocate, spraying the steel pipe with atomized nozzles from all directions. This effectively avoids the formation of water droplets on the steel pipe surface and the generation of cracks due to uneven cooling. It also achieves uniform cooling of the steel pipe, ensuring its appearance quality and corrosion resistance, and improving its service life.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe production technology, and in particular to a 3PE composite steel pipe direct-cooling device. Background Technology

[0002] 3PE composite steel pipe refers to steel pipe with a three-layer polyethylene anti-corrosion coating. This anti-corrosion layer structure includes an epoxy powder coating as the bottom layer, a middle layer of adhesive and anti-corrosion agent mixture, and an outer wear-resistant layer made of high-density polyethylene. 3PE composite steel pipe features corrosion resistance, wear resistance, water resistance, and sand resistance, and is widely used in pipelines for oil, natural gas, chemical, and urban water supply industries. During production, after the anti-corrosion coating is applied, the temperature of the coating is often higher than the ambient temperature. Without proper cooling, uneven cooling of the coating surface will occur. Therefore, cooling water is needed to lower the temperature to a suitable range. However, currently, directly spraying cold water onto the surface of the composite steel pipe can easily form water droplets on the unformed surface and can also cause cracks due to uneven cooling, affecting the appearance and anti-corrosion performance of the steel pipe.

[0003] For example, a 3PE composite steel pipe direct-spray water cooling device disclosed in Chinese patent literature (publication number: CN220242168U) sprays water upwards from the nozzles. After hitting the outer cover, the water falls back onto the honeycomb plate and flows along the water guide strips, forming a water flow that washes the surface of the steel pipe without damaging the 3PE anti-corrosion layer. This also results in more uniform cooling, preventing the formation of water droplets or cracks. Even after a rapid temperature drop, further cooling is still needed. The sprayed water hits the water distribution cover upwards and flows downwards along both sides, preventing water from directly splashing onto the steel pipe and making the coating glossier. This helps the anti-corrosion layer solidify and fix itself to the steel pipe surface quickly, increasing the adhesion between the anti-corrosion layer and the steel pipe surface, and improving the corrosion resistance and service life of the anti-corrosion layer.

[0004] However, the distribution and structural characteristics of the water guide strips make it difficult to ensure that the water flow can uniformly and comprehensively cover the entire circumference of the steel pipe. In actual operation, some areas may not be scourded or may have weak scouring force. This results in some areas of the steel pipe surface not being adequately cooled, affecting the overall cooling effect. Furthermore, the rapid dripping of water along the outer side of the steel pipe causes severe uneven water distribution at the bottom. The upper part near the water source may receive relatively more cooling, while the lower part receives relatively less cooling water due to the rapid dripping, leading to a significant difference in cooling degree between the upper and lower parts of the steel pipe, resulting in uneven cooling. This uneven cooling not only affects the solidification and formation of the anti-corrosion layer but may also generate stress within the anti-corrosion layer, reducing its corrosion resistance and service life. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as uneven cooling during spray cooling of 3PE composite steel pipes, which reduces the performance and service life of the 3PE composite steel pipes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A 3PE composite steel pipe direct-spray water cooling device includes a fixed base, and a central positioning and fixing mechanism is provided above the fixed base. The central positioning and fixing mechanism includes a fixed platform, and the lower end of the fixed platform is fixedly connected to the upper end of the fixed base.

[0008] The upper end of the fixed platform is provided with a collection groove, and the back of the fixed platform is fixedly connected to a drain pipe. The inner walls of both sides of the fixed platform are rotatably connected to a double-acting screw through bearings. A worm gear is fixedly sleeved on the outside of the double-acting screw. The external threads of the double-acting screw are connected to a first threaded block that is symmetrically distributed. A U-shaped moving rod is fixedly connected to one side of the first threaded block. One end of the U-shaped moving rod passes through and extends to the top of the fixed platform.

[0009] A reciprocating atomizing spray mechanism is provided above the fixed base.

[0010] Preferably, one end of the U-shaped moving rod is fixedly connected to a moving plate, the lower end of the moving plate is fixedly connected to a symmetrically distributed moving sleeve, and the inner wall of the moving sleeve is slidably connected to a fixed guide rail.

[0011] Preferably, the lower ends of the plurality of fixed guide rails are fixedly connected to the upper end of the fixed platform, and a conical positioning block is fixedly connected to one side of the movable plate.

[0012] Preferably, a first servo motor is fixedly installed on the inner bottom wall of the fixed platform, and a worm gear is fixedly installed on the output shaft of the first servo motor through a coupling, wherein the outer surface of the worm gear meshes with the tooth surface of the worm wheel.

[0013] Preferably, the reciprocating atomizing spray mechanism includes a support frame, the lower ends of two support frames are symmetrically distributed and fixedly connected to the upper end of the fixed base, and the upper ends of the two support frames are fixedly connected to a mounting plate, the upper end of the mounting plate being provided with a stroke groove.

[0014] Preferably, a second servo motor is fixedly mounted on the upper end of the mounting plate, and a reciprocating lead screw is fixedly mounted on the output shaft of the second servo motor through a coupling. One end of the reciprocating lead screw is rotatably connected to a support block through a bearing, and the lower end of the support block is fixedly connected to the upper end of the mounting plate.

[0015] Preferably, the reciprocating lead screw is externally threaded with a second threaded block, the lower end of the second threaded block passes through the stroke groove and is fixedly connected to an annular water guide shell, and the inner surface of the annular water guide shell is fixedly installed with atomizing nozzles distributed in an annular array.

[0016] Preferably, a water inlet pipe is fixedly sleeved on the inner wall of one of the support frames, one end of the water inlet pipe is fixedly connected to a corrugated expansion pipe, and one end of the corrugated expansion pipe is fixedly connected to one side of the annular water guide shell.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] In this invention, a central positioning and fixing mechanism is used to drive a worm gear and a worm wheel to mesh via a first servo motor, which in turn drives a bidirectional lead screw to rotate. This causes the first threaded block and the U-shaped moving rod to move, allowing the conical positioning block on the moving plate to be precisely inserted into the inner walls of both ends of the steel pipe, achieving centered internal support and fixation. Furthermore, a reciprocating atomizing spray mechanism causes the second threaded block and the annular water-guiding shell to reciprocate, spraying the steel pipe with atomized nozzles from all directions. Compared to direct spraying, this method effectively avoids the formation of water droplets on the steel pipe surface and the cracking caused by uneven cooling. It also achieves uniform cooling of the steel pipe, ensuring its appearance quality and corrosion resistance, and improving its service life. Attached Figure Description

[0019] Figure 1 A schematic diagram of the main structure of a 3PE composite steel pipe direct-spray water cooling device provided by this utility model;

[0020] Figure 2 A three-dimensional view of the fixed platform structure of a 3PE composite steel pipe direct-spray water cooling device provided by this utility model;

[0021] Figure 3 This utility model provides a 3PE composite steel pipe direct-spray water cooling device. Figure 2 Enlarged view of the structure at point A in the middle;

[0022] Figure 4 A three-dimensional view of the mounting plate structure of a 3PE composite steel pipe direct-spray water cooling device provided by this utility model;

[0023] Figure 5 A three-dimensional view of the annular water guide shell structure of a 3PE composite steel pipe direct-spray water cooling device provided by this utility model.

[0024] Legend: 1. Fixed base; 2. Fixed platform; 21. Collection tank; 22. Drain pipe; 23. Bidirectional lead screw; 24. Worm gear; 25. First threaded block; 26. U-shaped moving rod; 27. Moving plate; 28. Moving sleeve; 29. ​​Fixed guide rail; 210. Conical positioning block; 211. First servo motor; 212. Worm gear; 3. Support frame; 31. Mounting plate; 32. Stroke groove; 33. Second servo motor; 34. Reciprocating lead screw; 35. Support block; 36. Second threaded block; 37. Annular water guide shell; 38. Atomizing nozzle; 39. Water inlet pipe; 310. Corrugated telescopic pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Example

[0030] like Figure 1-5As shown, this utility model provides a technical solution: a 3PE composite steel pipe direct-spray water cooling device, including a fixed base 1, a central positioning and fixing mechanism and a reciprocating atomizing spray mechanism. The fixed base 1 provides stable support for the entire device; the central positioning and fixing mechanism is used to accurately position and stably support the 3PE composite steel pipe; the reciprocating atomizing spray mechanism realizes uniform atomized spray cooling of the steel pipe, avoiding the adverse effects of direct spraying.

[0031] The lower end of the fixed platform 2 is firmly fixed to the upper end of the fixed base 1 by means of welding or bolt connection. The collection tank 21 opened at the upper end of the fixed platform 2 is used to collect water during the cooling process. The back of the collection tank 21 is fixedly connected to the drain pipe 22 by means of welding or bonding so as to discharge the collected water out of the device.

[0032] The inner walls of both sides of the fixed platform 2 are rotatably connected to the bidirectional lead screw 23 through high-precision bearings. The worm gear 24 is fixedly sleeved on the outside of the bidirectional lead screw 23 through key connection or other means. The bidirectional lead screw 23 is connected to the first threaded block 25, which is symmetrically distributed, through a precision thread connection. When the bidirectional lead screw 23 rotates, the first threaded block 25 can move smoothly along the lead screw axis. A U-shaped moving rod 26 is fixedly connected to one side of the first threaded block 25 through welding or bolt connection or other means. One end of the U-shaped moving rod 26 passes through the fixed platform 2 and extends above it.

[0033] One end of the U-shaped moving rod 26 is fixedly connected to the moving plate 27 by welding or bolting. The lower end of the moving plate 27 is fixedly connected to symmetrically distributed moving sleeves 28 by welding or bolting. The inner wall of the moving sleeves 28 is connected to the fixed guide rails 29 by a precise sliding sleeve structure. The lower ends of the multiple fixed guide rails 29 are fixedly connected to the upper end of the fixed platform 2 by welding or bolting, providing stable guidance for the movement of the moving plate 27.

[0034] A tapered positioning block 210 is fixedly connected to one side of the movable plate 27 by welding or bolting, which is used to internally support and center the steel pipe. The inner bottom wall of the fixed platform 2 is fixed with a first servo motor 211 by screws. The output shaft of the first servo motor 211 is fixedly connected to the worm gear 212 by a coupling. The outer surface of the worm gear 212 is connected to the tooth surface of the worm wheel 24 by a precision meshing structure to realize power transmission.

[0035] The lower ends of the two support frames 3 are symmetrically distributed and fixedly connected to the upper end of the fixed base 1 by welding or bolting. The upper end of the support frame 3 is fixedly connected to the mounting plate 31 by welding or bolting. The upper end of the mounting plate 31 is provided with a stroke groove 32 by machining.

[0036] The upper end of the mounting plate 31 is fixed with screws or other means to install a second servo motor 33. The output shaft of the second servo motor 33 is fixedly connected to the reciprocating screw 34 through a coupling. One end of the reciprocating screw 34 is rotatably connected to the support block 35 through a high-precision bearing. The lower end of the support block 35 is fixedly connected to the upper end of the mounting plate 31 through welding or bolt connection or other means.

[0037] The reciprocating screw 34 is connected to the second threaded block 36 by a precision thread. The lower end of the second threaded block 36 passes through the stroke groove 32 and is fixedly connected to the annular water guide shell 37 by welding or bolting. The inner surface of the annular water guide shell 37 is fixedly installed with atomizing nozzles 38 arranged in an annular array by welding or bonding.

[0038] One of the support frames 3 has an inlet pipe 39 fixedly connected to its inner wall by welding or sleeve. The inlet pipe 39 is used to connect to an external water source for water supply. One end of the inlet pipe 39 is fixedly connected to a corrugated expansion pipe 310 by welding or bonding. One end of the corrugated expansion pipe 310 is fixedly connected to one side of the annular water guide shell 37 by welding or bonding to realize water supply. The corrugated expansion pipe 310 has expansion and contraction characteristics to move in conjunction with the annular water guide shell 37.

[0039] The working process of this utility model:

[0040] Step 1: When cooling the 3PE composite steel pipe is required, the steel pipe is first fixed and moved to the middle of the two conical positioning blocks 210 using external equipment. Then, the first servo motor 211 is started. The output shaft of the first servo motor 211 drives the worm gear 212 to rotate. Since the worm gear 212 meshes with the worm wheel 24, the worm wheel 24 rotates accordingly, which in turn causes the bidirectional lead screw 23, which is fixedly sleeved with the worm wheel 24, to rotate. The bidirectional lead screw 23 is threadedly connected to the symmetrically distributed first threaded blocks 25. When the bidirectional lead screw 23 rotates, the first threaded blocks 25 move along the axial direction of the lead screw. The first threaded blocks 25 drive the U-shaped moving rod 26 to move, and the U-shaped moving rod 26 in turn drives the moving plate 27 and the conical positioning blocks 210 fixed on the moving plate 27. 10. During the movement, in order to avoid the conical positioning block 210 from colliding with the annular water guide shell 37, the second servo motor 33 is started synchronously. The output shaft of the second servo motor 33 drives the reciprocating screw 34 to rotate. The reciprocating screw 34 is threadedly connected to the second threaded block 36. The second threaded block 36 drives the annular water guide shell 37 to move in the stroke groove 32, so that it avoids the movement path of the conical positioning block 210. As the first servo motor 211 continues to run, the conical positioning block 210 gradually approaches the inner wall of both ends of the steel pipe. When the conical positioning block 210 is inserted into the inner wall of both ends of the steel pipe, it uses its conical structure to provide internal support and center fixation for steel pipes of different inner diameters, ensuring that the steel pipe is in a stable and central position on the fixed platform 2.

[0041] Step two: After the steel pipe is fixed, the second servo motor 33 continues to work, driving the reciprocating screw 34 to rotate continuously. The rotation of the reciprocating screw 34 causes the second threaded block 36 to drive the annular water guide housing 37 to perform reciprocating linear motion within the stroke groove 32. The external water source flows in through the water inlet pipe 39 and enters the annular water guide housing 37 through the corrugated telescopic pipe 310. The atomizing nozzles 38 distributed in a ring array on the inner surface of the annular water guide housing 37 atomize the water and spray it out, evenly spraying it onto the surface of the steel pipe to cool it. During the cooling process, the reciprocating motion of the annular water guide housing 37 ensures that all parts of the steel pipe surface are fully and evenly cooled, avoiding uneven cooling. During the cooling process, the water sprayed onto the surface of the steel pipe will gradually gather and drip into the collection tank 21 of the fixed platform 2. The water collected in the collection tank 21 is discharged from the equipment through the drain pipe 22 fixedly connected to the back, ensuring that there is no water accumulation in the working area of ​​the equipment and maintaining the normal operating environment of the equipment.

[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 3PE composite steel pipe direct water cooling device free of shower, comprising a fixed base (1), characterized in that: Above the fixed base (1), a central positioning and fixing mechanism is provided. The central positioning and fixing mechanism includes a fixed platform (2), and the lower end of the fixed platform (2) is fixedly connected to the upper end of the fixed base (1). A collection groove (21) is formed in the upper end of the fixed platform (2). A drain pipe (22) is fixedly connected to the back of the fixed platform (2). The two inner walls of the fixed platform (2) are rotatably connected to a bidirectional screw rod (23) through bearings. A worm gear (24) is fixedly sleeved on the outer part of the bidirectional screw rod (23). Symmetrically distributed first threaded blocks (25) are threadedly connected to the outer part of the bidirectional screw rod (23). One side of the first threaded block (25) is fixedly connected to a U-shaped moving rod (26), and one end of the U-shaped moving rod (26) penetrates and extends above the fixed platform (2). A reciprocating atomizing spraying mechanism is provided above the fixed base (1).

2. The 3PE composite steel pipe non-direct spray water cooling device according to claim 1, wherein: One end of the U-shaped moving rod (26) is fixedly connected to a moving plate (27). Symmetrically distributed moving sleeves (28) are fixedly connected to the lower end of the moving plate (27). A fixed guide rail (29) is slidably connected to the inner wall of the moving sleeve (28).

3. A 3PE composite steel pipe direct spray water cooling-free device according to claim 2, characterized in that: The lower ends of multiple fixed guide rails (29) are fixedly connected to the upper end of the fixed platform (2). One side of the moving plate (27) is fixedly connected to a conical positioning block (210).

4. A 3PE composite steel pipe non-direct spray water cooling device according to claim 1, characterized in that: A first servo motor (211) is fixedly installed on the inner bottom wall of the fixed platform (2). A worm (212) is fixedly installed on the output shaft of the first servo motor (211) through a coupling. The outer surface of the worm (212) meshes with the tooth surface of the worm gear (24).

5. The 3PE composite steel pipe non-direct spray water cooling device according to claim 1, characterized in that: The reciprocating atomizing spraying mechanism includes a support frame (3). The lower ends of the two support frames (3) are symmetrically distributed and fixedly connected to the upper end of the fixed base (1). The upper ends of the two support frames (3) are fixedly connected to mounting plates (31). A travel groove (32) is formed in the upper end of the mounting plate (31).

6. The 3PE composite steel pipe direct spray water cooling-free device according to claim 5, wherein: A second servo motor (33) is fixedly installed on the upper end of the mounting plate (31). A reciprocating screw rod (34) is fixedly installed on the output shaft of the second servo motor (33) through a coupling. One end of the reciprocating screw rod (34) is rotatably connected to a support block (35) through a bearing. The lower end of the support block (35) is fixedly connected to the upper end of the mounting plate (31).

7. A 3PE composite steel pipe direct spray water cooling-free device according to claim 6, characterized in that: A second threaded block (36) is threadedly connected to the outer part of the reciprocating screw rod (34). The lower end of the second threaded block (36) penetrates the travel groove (32) and is fixedly connected to an annular water guiding shell (37). Atomizing nozzles (38) are fixedly installed on the inner side surface of the annular water guiding shell (37) in an annular array distribution.

8. A 3PE composite steel pipe non-direct spray water cooling device according to claim 7, characterized in that: A water inlet pipe (39) is fixedly sleeved on the inner wall of one of the support frames (3). One end of the water inlet pipe (39) is fixedly connected to a corrugated expansion pipe (310). One end of the corrugated expansion pipe (310) is fixedly connected to one side of the annular water guiding shell (37).

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