Pickling device for seamless steel pipe of high-pressure boiler

Abstract

The utility model relates to the technical field of pickling devices, and discloses a high-pressure boiler seamless steel pipe pickling device which comprises a pickling box and two I-shaped sliding rails, rail wheels are connected to the inner walls of the left and right sides of the two I-shaped sliding rails in a sliding mode, and hanging plates are connected to the far and adjacent sides of the multiple rail wheels in a rotating mode. The bottom walls of the two hanging plates are fixedly provided with wire spools, the inner walls of the two wire spools are rotatably connected with two steel ropes, the bottom ends of the multiple steel ropes are fixedly connected with hooks, the inner walls of the multiple hooks are fixedly connected with hanging rings, and the middles of the outer walls of the multiple hanging rings are fixedly connected with fixing pieces. According to the steel pipe pickling device, the fixing piece is moved to the top wall of the fixing clamp, so that the hanging ring is exposed above the liquid level of pickling liquid, the steel pipe is soaked in the pickling liquid, favorable conditions are provided for moving out the pickled steel pipe, and the steel pipe can be easily taken out again after being pickled.

Description

Technical Field

[0001] The utility model relates to the technical field of pickling devices, in particular to a pickling device for seamless steel pipes of high-pressure boilers. Background Art

[0002] The characteristic of seamless steel pipe is that after the steel billet is processed through multiple processes, a seamless appearance and structure is formed. Compared with traditional welded steel pipes, seamless steel pipes are more uniform in structure and have no welded joints. Therefore, they have higher strength and pressure resistance, and are suitable for withstanding high pressure, high temperature and special working environments.

[0003] During the production and transportation of steel pipes, scale, rust and other contaminants are often formed, which will reduce the surface finish and corrosion resistance of the steel pipes. Pickling of steel pipes can improve their surface quality and performance.

[0004] The pickling process can effectively remove the oxide scale, rust and oil on the surface of the steel pipe by immersing it in an acidic solution, making the surface of the steel pipe smooth and clean. However, the existing pickling device will throw the steel pipe as a whole into the pickling tank for immersion. After pickling, the steel pipe needs to be clamped manually using a clamping tool and then taken out of the pickling tank, which makes the removal process more cumbersome and increases labor consumption. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a pickling device for high-pressure boiler seamless steel pipes, which aims to improve the problem that the steel pipes need to be clamped manually using clamping tools after pickling and then taken out of the pickling tank, which makes the removal process more cumbersome and increases labor consumption.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pickling device for seamless steel pipes of high-pressure boilers, comprising a pickling box and two I-shaped slide rails, the left and right inner walls of the two I-shaped slide rails are slidably connected with track wheels, the distant adjacent sides of the plurality of track wheels are rotatably connected with hanging plates, the bottom walls of the two hanging plates are fixedly installed with winding drums, the inner walls of the two winding drums are rotatably connected with two steel ropes, the bottom ends of the plurality of steel ropes are fixedly connected with hooks, the inner walls of the plurality of hooks are fixedly connected with hanging rings, the middle parts of the outer walls of the plurality of hanging rings are fixedly connected with fixing plates, the middle parts of the bottom walls of the plurality of hanging rings are fixedly connected with acid-resistant ropes, the front and rear sides of the inner walls of the pickling box are fixedly connected with two fixing clamps, the bottom ends of the plurality of fixing plates are attached to the top walls of the plurality of fixing clamps, the top end of the rear side of the pickling box is rotatably connected with a pickling cover, and fixing devices are arranged on the left and right sides of the inner wall of the pickling box.

[0007] As a further description of the above technical solution:

[0008] The fixing device includes two fixing plates, a short partition plate is fixedly connected to the middle part of the inner bottom wall of the two fixing plates, a long partition plate is fixedly connected to the front and rear sides of the inner bottom wall of the two fixing plates, the top ends of the two fixing plates, the top ends of the two short partition plates and the top ends of the multiple long partition plates are rotatably connected to pulleys, the inner bottom walls of the two fixing plates are equidistantly provided with fitting grooves, and the height of the two fixing plates is higher than the height of the multiple long partition plates.

[0009] As a further description of the above technical solution:

[0010] The front top of the pickling box is fixedly connected with two snaps, and the rear side of the pickling cover is fixedly connected with two fixing grooves, and the two snaps are engaged with the two fixing grooves.

[0011] As a further description of the above technical solution:

[0012] The middle part of the front side of the pickling box is connected with a liquid inlet pipe, and the top end of the liquid inlet pipe is fixedly installed with a liquid inlet valve.

[0013] As a further description of the above technical solution:

[0014] The bottom end of the middle part of the front side of the pickling box is connected with a liquid outlet pipe, and a solenoid valve is fixedly installed in the middle of the liquid outlet pipe.

[0015] As a further description of the above technical solution:

[0016] The inner bottom wall of the pickling box is fixedly connected with a filter plate, and the top wall of the filter plate is provided with a plurality of leakage holes.

[0017] As a further description of the above technical solution:

[0018] A plurality of propellers are fixedly installed at equal intervals on the top wall of the filter plate, and a plurality of heating strips are fixedly connected to the rear side of the inner wall of the pickling box.

[0019] As a further description of the above technical solution:

[0020] The left and right ends of the rear side of the pickling box are fixedly connected with support frames, and the pickling cover is attached to the top walls of the two support frames.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the steel rope is rotated and wound by the winding drum, and the hook at the bottom end of the steel rope is connected to the lifting ring, so that the winding drum can move the lifting ring and the steel pipe tied with the acid-resistant rope at the bottom end of the lifting ring into the pickling box during the rotation process, and then the fixing plate on the lifting ring is moved to the top wall of the fixing clamp to fit with the fixing plate, and the acid-resistant rope passes through the inner wall of the fixing clamp, so that the lifting ring is exposed above the liquid surface of the pickling solution, and the steel pipe is immersed in the pickling solution, which provides favorable conditions for removing the steel pipe after pickling, and realizes that the steel pipe can be easily taken out again after pickling.

[0023] 2. In the utility model, the pulleys at the top of the fixed plate, the short partition plate and the long partition plate make the movement of the steel pipe in the pickling box smoother. When the steel pipe is moved into the pickling box, due to the height difference between the fixed plate, the short partition plate and the long partition plate, a funnel shape with high sides and low middle is formed. During the falling process of the steel pipe, the gaps in the fixed plate, the short partition plate and the long partition plate will be filled in turn to form a neat and orderly arrangement, ensuring that each steel pipe can fully contact the pickling liquid, thereby improving the pickling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of the pickling device for high-pressure boiler seamless steel tubes proposed by the utility model;

[0025] Figure 2 A three-dimensional diagram of the pickling device for high-pressure boiler seamless steel tubes proposed by the utility model;

[0026] Figure 3 The utility model is a side view of the pickling device for high-pressure boiler seamless steel tubes.

[0027] Legend:

[0028] 1. Pickling box; 2. Fixing device; 201. Fixing plate; 202. Short partition plate; 203. Long partition plate; 204. Pulley; 205. Fitting groove; 3. I-shaped slide rail; 4. Track wheel; 5. Hanging plate; 6. Winding drum; 7. Steel rope; 8. Hook; 9. Lifting ring; 10. Fixing plate; 11. Acid-resistant rope; 12. Fixing clip; 13. Pickling cover; 14. Snap button; 15. Fixing groove; 16. Liquid inlet pipe; 17. Liquid inlet valve; 18. Liquid outlet pipe; 19. Solenoid valve; 20. Filter plate; 21. Leakage hole; 22. Propeller; 23. Heating strip; 24. Support frame. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Reference Figure 1 , Figure 2 and Figure 3 The utility model provides an embodiment: a pickling device for seamless steel pipes for high-pressure boilers, comprising a pickling box 1 and two I-shaped slide rails 3, the left and right inner walls of the two I-shaped slide rails 3 are slidably connected with track wheels 4, the far adjacent sides of the multiple track wheels 4 are rotatably connected with hanging plates 5, the bottom walls of the two hanging plates 5 are fixedly installed with winding drums 6, the inner walls of the two winding drums 6 are rotatably connected with two steel ropes 7, the bottom ends of the multiple steel ropes 7 are fixedly connected with hooks 8, the inner walls of the multiple hooks 8 are fixedly connected with lifting rings 9, the middle parts of the outer walls of the multiple lifting rings 9 are fixedly connected with fixing plates 10, the middle parts of the bottom walls of the multiple lifting rings 9 are fixedly connected with acid-resistant ropes 11, the front and rear sides of the inner wall of the pickling box 1 are fixedly connected with two fixing clamps 12, the bottom ends of the multiple fixing plates 10 are all fitted on the top walls of the multiple fixing clamps 12, the top end of the rear side of the pickling box 1 is rotatably connected with a pickling cover 13, and the left and right sides of the inner wall of the pickling box 1 are provided with fixing devices 2;

[0031] Specifically, the I-shaped slide rail 3 provides a stable track for the movement of the steel pipe, and the track wheel 4 slides on the I-shaped slide rail 3 to ensure the stability and accuracy of the steel pipe during movement. The hanging plate 5 is connected to the I-shaped slide rail 3 through the track wheel 4, and the winding drum 6 is fixed at the bottom of the hanging plate 5. The winding drum 6 is driven to rotate and wind the steel rope 7. The bottom end of the steel rope 7 is connected to the lifting ring 9 through the hook 8. A fixing plate 10 is fixed in the middle of the outer wall of the lifting ring 9 to ensure a stable connection between the lifting ring 9 and the steel pipe. Since an acid-resistant rope 11 is fixed in the middle of the bottom wall of the lifting ring 9, and the acid-resistant rope 11 has an acid-resistant function, the steel pipe is pulled from The bottom end is held, and when the steel pipe needs to be placed in the pickling box 1, the steel pipe is dropped into the pickling box 1 by operating the winding reel 6, and the fixing plate 10 on the lifting ring 9 is moved to the top wall of the fixing clamp 12 on the inner wall of the pickling box 1 to fit with the fixing plate 10, and the acid-resistant rope 11 passes through the inner wall of the fixing clamp 12, so that the lifting ring 9 is exposed above the liquid surface of the pickling solution, and the steel pipe is immersed in the pickling solution, which provides favorable conditions for removing the steel pipe after pickling. The pickling cover 13 is used to close the pickling box 1 to prevent the pickling solution from splashing during the pickling process, ensure the safety of the pickling process, and realize that the steel pipe can be easily taken out again after pickling.

[0032] Reference Figure 2 and Figure 3The fixing device 2 includes two fixing plates 201, the middle of the inner bottom wall of the two fixing plates 201 is fixedly connected with a short partition plate 202, the front and rear sides of the inner bottom wall of the two fixing plates 201 are fixedly connected with a long partition plate 203, the top of the two fixing plates 201, the top of the two short partition plates 202 and the top of the multiple long partition plates 203 are rotatably connected with pulleys 204, the inner bottom walls of the two fixing plates 201 are equidistantly provided with fitting grooves 205, and the height of the two fixing plates 201 is higher than the height of the multiple long partition plates 203;

[0033] Specifically, the fixed plates 201 on the left and right sides of the inner wall of the pickling box 1 provide basic support for the steel pipes during the pickling process. The short partition plates 202 and the long partition plates 203 in the inner bottom wall of each fixed plate 201 are used to further subdivide the placement space of the steel pipes. In order to ensure the smooth movement of the steel pipes, pulleys 204 are installed on the top of the fixed plates 201, the short partition plates 202 and the long partition plates 203. With the assistance of the pulleys 204, the movement of the steel pipes is smoother, and the friction between the steel pipes and the partition plates is also reduced. When the steel pipes are moved into the pickling box 1, due to the intervals between the fixed plates 201, the short partition plates 202 and the long partition plates 203, and the intervals The diameter of the partition is equal to that of the steel pipe. The steel pipe will naturally fall into the gap between the fixed plate 201, the short partition plate 202 and the long partition plate 203 under the action of gravity. Due to the height difference between the fixed plate 201, the short partition plate 202 and the long partition plate 203, a funnel shape with high sides and low middle is formed. During the falling process of the steel pipe, the gaps among the fixed plate 201, the short partition plate 202 and the long partition plate 203 will be filled in turn to form a neat and orderly arrangement. This arrangement avoids collision and friction between the steel pipes, further protects the surface quality of the steel pipes, and ensures that each steel pipe can fully contact the pickling solution, thereby improving the pickling effect.

[0034] Reference Figure 2 The front top of the pickling box 1 is fixedly connected with two snaps 14, and the rear side of the pickling cover 13 is fixedly connected with two fixing grooves 15, and the two snaps 14 are snap-connected with the two fixing grooves 15; the middle of the front side of the pickling box 1 is connected with a liquid inlet pipe 16, and the top of the liquid inlet pipe 16 is fixedly installed with a liquid inlet valve 17; the bottom of the middle of the front side of the pickling box 1 is connected with a liquid outlet pipe 18, and the middle of the liquid outlet pipe 18 is fixedly installed with a solenoid valve 19;

[0035] Specifically, the pickling box 1 and the pickling cover 13 are snap-fitted together by means of snap buttons 14 and fixing grooves 15, so as to ensure the sealing of the pickling box 1 during the pickling process and prevent leakage of the pickling solution. The liquid inlet pipe 16 is connected to the pickling box 1, allowing the operator to add the pickling solution into the pickling box 1 through the liquid inlet pipe 16. The liquid inlet pipe 16 is provided with a liquid inlet valve 17, which can conveniently control the switch of the liquid inlet pipe 16, and the liquid outlet pipe 18 can be controlled by the solenoid valve 19 to discharge the pickling solution when it is turbid and cannot be used.

[0036] Reference Figure 2 and Figure 3 The inner bottom wall of the pickling box 1 is fixedly connected with a filter plate 20, and the top wall of the filter plate 20 is provided with a plurality of leakage holes 21; a plurality of propellers 22 are fixedly installed at equal intervals on the top wall of the filter plate 20, and a plurality of heating strips 23 are fixedly connected to the rear side of the inner wall of the pickling box 1; the left and right ends of the rear side of the pickling box 1 are fixedly connected with support frames 24, and the pickling cover 13 is attached to the top walls of the two support frames 24;

[0037] Specifically, the filter plate 20 and the multiple leakage holes 21 opened on the top wall are mainly used to filter impurities, particulate matter or sediment generated during the pickling process, which can maintain the cleanliness of the pickling solution and improve the pickling effect. The rotation of the propeller 22 will drive the pickling solution to produce flow and stirring effects in the pickling box 1, which is helpful to evenly distribute the pickling solution. The heating strip 23 is used to heat the pickling solution to keep the pickling solution at a certain temperature, accelerate the dissolution rate of rust on the surface of the steel pipe, thereby improving the pickling efficiency. The support frame 24 is used to provide support for the pickling cover 13 after the pickling cover 13 is opened.

[0038] Working principle: The I-shaped slide rail 3 provides a stable track for the movement of the steel pipe. The track wheel 4 slides on the I-shaped slide rail 3 to ensure the stability and accuracy of the steel pipe during movement. The hanging plate 5 is connected to the I-shaped slide rail 3 through the track wheel 4. The winding drum 6 is fixed at the bottom of the hanging plate 5. The winding drum 6 is driven to rotate and wind the steel rope 7. The bottom end of the steel rope 7 is connected to the lifting ring 9 through the hook 8. A fixing plate 10 is fixed in the middle of the outer wall of the lifting ring 9 to ensure a stable connection between the lifting ring 9 and the steel pipe. Since an acid-resistant rope 11 is fixed in the middle of the bottom wall of the lifting ring 9, and the acid-resistant rope 11 has an acid-resistant function, through two The acid-resistant rope 11 holds the steel pipe from the bottom end. When the steel pipe needs to be placed in the pickling box 1, the steel pipe is dropped into the pickling box 1 by operating the winding reel 6, and then the fixing plate 10 on the lifting ring 9 is moved to the top wall of the fixing clamp 12 on the inner wall of the pickling box 1 to fit the fixing plate 10, and the acid-resistant rope 11 passes through the inner wall of the fixing clamp 12, so that the lifting ring 9 is exposed above the liquid surface of the pickling solution, and the steel pipe is immersed in the pickling solution, which provides favorable conditions for removing the steel pipe after pickling. The pickling cover 13 is used to close the pickling box 1 to prevent the pickling solution from splashing during the pickling process, thereby ensuring the safety of the pickling process.

[0039] The fixed plates 201 on the left and right sides of the inner wall of the pickling box 1 provide basic support for the steel pipe during the pickling process. The short partition plates 202 and the long partition plates 203 in the inner bottom wall of each fixed plate 201 are used to further subdivide the placement space of the steel pipe. In order to ensure the smooth movement of the steel pipe, the tops of the fixed plates 201, the short partition plates 202 and the long partition plates 203 are all installed with pulleys 204. With the assistance of the pulleys 204, the movement of the steel pipe is smoother, and the friction between the steel pipe and the partition plates is also reduced. When the steel pipe is moved into the pickling box 1, due to the gaps between the fixed plates 201, the short partition plates 202 and the long partition plates 203, The steel pipes are spaced apart, and the interval is equal to the diameter of the steel pipe. Under the action of gravity, the steel pipes will naturally fall into the gaps between the fixed plate 201, the short partition plate 202 and the long partition plate 203. Due to the height difference between the fixed plate 201, the short partition plate 202 and the long partition plate 203, a funnel shape with high sides and low middle is formed. During the falling process of the steel pipes, the gaps among the fixed plate 201, the short partition plate 202 and the long partition plate 203 will be filled in turn to form a neat and orderly arrangement. This arrangement avoids collision and friction between the steel pipes, further protects the surface quality of the steel pipes, and ensures that each steel pipe can fully contact the pickling solution.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pickling device for seamless steel pipes for high-pressure boilers, comprising a pickling box (1) and two I-shaped slide rails (3), characterized in that: The left and right inner walls of the two I-shaped slide rails (3) are slidably connected to track wheels (4), the far adjacent sides of the plurality of track wheels (4) are rotatably connected to hanging plates (5), the bottom walls of the two hanging plates (5) are fixedly mounted with winding drums (6), the inner walls of the two winding drums (6) are rotatably connected to two steel ropes (7), the bottom ends of the plurality of steel ropes (7) are fixedly connected to hooks (8), the inner walls of the plurality of hooks (8) are fixedly connected to hanging rings (9), and the middle parts of the outer walls of the plurality of hanging rings (9) are fixedly connected to fixing plates (10), an acid-resistant rope (11) is fixedly connected to the middle of the bottom wall of the plurality of lifting rings (9), two fixing clamps (12) are fixedly connected to the front and rear sides of the inner wall of the pickling box (1), the bottom ends of the plurality of fixing plates (10) are attached to the top walls of the plurality of fixing clamps (12), a pickling cover (13) is rotatably connected to the top end of the rear side of the pickling box (1), and fixing devices (2) are provided on the left and right sides of the inner wall of the pickling box (1), and the fixing devices (2) are used to arrange the steel pipes neatly and at intervals inside the pickling box (1).

2. The pickling device for high-pressure boiler seamless steel tube according to claim 1, characterized in that: The fixing device (2) comprises two fixing plates (201), the middle parts of the inner bottom walls of the two fixing plates (201) are fixedly connected with short partition plates (202), the front and rear sides of the inner bottom walls of the two fixing plates (201) are fixedly connected with long partition plates (203), the top ends of the two fixing plates (201), the top ends of the two short partition plates (202) and the top ends of the plurality of long partition plates (203) are rotatably connected with pulleys (204), the inner bottom walls of the two fixing plates (201) are equidistantly provided with fitting grooves (205), and the height of the two fixing plates (201) is higher than the height of the plurality of long partition plates (203).

3. The pickling device for high-pressure boiler seamless steel tube according to claim 1, characterized in that: The front top of the pickling box (1) is fixedly connected with two snap buttons (14), the rear side of the pickling cover (13) is fixedly connected with two fixing grooves (15), and the two snap buttons (14) are snap-connected with the two fixing grooves (15).

4. The pickling device for high-pressure boiler seamless steel tube according to claim 1, characterized in that: The front middle part of the pickling tank (1) is connected with a liquid inlet pipe (16), and a liquid inlet valve (17) is fixedly installed at the top end of the liquid inlet pipe (16).

5. The pickling device for high-pressure boiler seamless steel tube according to claim 1, characterized in that: The bottom end of the middle part of the front side of the pickling tank (1) is connected to a liquid outlet pipe (18), and a solenoid valve (19) is fixedly installed in the middle of the liquid outlet pipe (18).

6. The pickling device for high-pressure boiler seamless steel tube according to claim 1, characterized in that: A filter plate (20) is fixedly connected to the inner bottom wall of the pickling box (1), and a plurality of leakage holes (21) are formed on the top wall of the filter plate (20).

7. The pickling device for high-pressure boiler seamless steel tube according to claim 6, characterized in that: A plurality of propellers (22) are fixedly mounted at equal intervals on the top wall of the filter plate (20), and a plurality of heating strips (23) are fixedly connected to the rear side of the inner wall of the pickling box (1).

8. The pickling device for high-pressure boiler seamless steel tube according to claim 1, characterized in that: The left and right ends of the rear side of the pickling box (1) are fixedly connected to support frames (24), and the pickling cover (13) is attached to the top walls of the two support frames (24).

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