Pickling device for seamless steel tube of high-pressure boiler

Abstract

The utility model discloses a seamless steel pipe pickling device for a high-pressure boiler, belongs to the technical field of seamless steel pipe pickling, and aims to solve the problems that a mechanism for inclining a steel pipe is lacked, pickling liquid is stored in the steel pipe when the steel pipe is horizontally taken out, the pickling liquid is wasted, and potential safety hazards exist when the pickling liquid falls off. Comprising a pickling tank and an upper side plate, the upper side plate is fixedly mounted in the center of one side of the upper end of the pickling tank and rotationally provided with a rotary table, a stand column is mounted on the upper surface of the rotary table and provided with a limiting groove, a first motor is mounted at the top of the stand column and connected with a first screw, and the first screw is in threaded connection with a lifting plate. According to the pickling device for the seamless steel pipe of the high-pressure boiler, through the arrangement of the rotary inclination assembly, the steel pipe is conveniently driven to incline by a certain angle, then a pickling solution in the steel pipe is conveniently discharged, waste of the pickling solution is prevented, the pickling solution is prevented from falling down into a working area, and the safety of operators is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of seamless steel pipe pickling, and particularly relates to a pickling device for seamless steel pipes of high-pressure boilers. Background Art

[0002] The seamless steel pipe for high-pressure boilers is a kind of boiler pipe. When the high-pressure boiler pipe is in use, it is often under high temperature and high pressure conditions. Under the action of high-temperature flue gas and water vapor, the pipe will undergo oxidation and corrosion. It is required that the steel pipe has high creep strength, high oxidation and corrosion resistance, and good tissue stability. In order to prevent the steel pipe from oxidation, pickling solution is needed to remove the scale and rust on the steel surface, and at the same time, the passivation process is completed to achieve the purpose of anti-oxidation and anti-corrosion. When pickling the steel pipe, a pickling device is required.

[0003] In the prior art, the steel pipe is horizontally hoisted into the pickling tank for pickling. However, due to the lack of a mechanism for tilting the steel pipe, when the steel pipe is horizontally taken out, there is pickling solution in the steel pipe. On the one hand, it causes waste of pickling solution, and on the other hand, there is a safety hazard when the pickling solution drops. Therefore, a technical measure is proposed to solve the problems of the lack of a mechanism for tilting the steel pipe, the waste of pickling solution caused by the pickling solution remaining in the steel pipe when the steel pipe is horizontally taken out, and the safety hazard when the pickling solution drops. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a pickling device for seamless steel pipes of high-pressure boilers, aiming to solve the problems of the lack of a mechanism for tilting the steel pipe, the waste of pickling solution caused by the pickling solution remaining in the steel pipe when the steel pipe is horizontally taken out, and the safety hazard when the pickling solution drops.

[0006] (2) Technical Solutions

[0007] To solve the above technical problems, the utility model provides such a pickling device for seamless steel pipes of high-pressure boilers, which includes a pickling tank and an upper side plate. The upper side plate is fixedly installed at the center position on one side of the upper end of the pickling tank. A turntable is rotatably installed on the upper side plate. A column is installed on the upper surface of the turntable. A limiting groove is opened in the column. A first motor is installed at the top of the column. The first motor is connected with a first screw rod. The first screw rod is threadedly connected with a lifting plate. A rotating and tilting assembly is installed on the upper surface of the lifting plate. Thanks to the setting of the rotating and tilting assembly, it is convenient to drive the steel pipe to tilt at a certain angle, thereby facilitating the discharge of the pickling solution inside the steel pipe, preventing the waste of pickling solution, and preventing the pickling solution from falling down into the working area, improving the safety of the operators.

[0008] Further, the lifting plate is slidably adapted to the limiting groove. A lower side plate is provided below the upper side plate. The lower side plate is fixedly installed on the side of the pickling tank. A second motor is installed on the upper surface of the lower side plate. A vertical rod is driven by the second motor and is connected to the turntable.

[0009] Further, a base is installed below the pickling tank. A drain pipe is provided at the lower end of the side of the pickling tank, and a valve is provided on the drain pipe.

[0010] Further, a placing plate is connected to the lower end of the rotating and tilting assembly. A chute is formed in the placing plate. A second screw rod is rotatably installed in the chute. The second screw rod is connected to a knob. One end of the upper surface of the placing plate is provided with a fixing plate. A limiting plate is installed at the middle position of the placing plate. The second screw rod is threadedly connected to a slider. The slider is adapted to the chute. The upper end of the slider is connected to a moving plate. Multiple groups of uniformly distributed round holes are formed in the moving plate and the fixing plate. Thanks to the settings of the knob, the second screw rod, and the slider, it is convenient to drive the moving plate to move horizontally, and then it is convenient to adjust the distance between the moving plate and the fixing plate, which is convenient for limiting steel pipes of different lengths. Thus, when the steel pipe is tilted in the next step, the steel pipe will not fall, improving the safety of the operation.

[0011] Further, multiple groups of uniformly distributed grooves are formed in the limiting plate, and uniformly distributed ejector rods are installed in the grooves. The upper ends of the ejector rods are arc-shaped.

[0012] Furthermore, the rotating and tilting assembly includes a mounting seat. The mounting seat is fixedly installed on the upper surface of the lifting plate. A cylinder is fixedly penetrated through the upper end of the mounting seat. The cylinder is connected to a connecting block, and rollers are provided at both ends of the connecting block.

[0013] Furthermore, the rotating and tilting assembly further includes a rotating plate. The lower end of the rotating plate is fixedly connected to the placing plate. Rotating rods are provided at both ends of the rotating plate. The rotating rods are rotatably connected to the lifting plate. A rotating groove is formed on the upper surface of the rotating plate. The cylinder passes through the rotating groove, and the rollers are in contact with the surface of the rotating plate.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] With the settings of the knob, the second screw rod, and the slider in the present utility model, it is convenient to drive the moving plate to move horizontally, and then it is convenient to adjust the distance between the moving plate and the fixing plate, which is convenient for limiting steel pipes of different lengths. Thus, when the steel pipe is tilted in the next step, the steel pipe will not fall, improving the safety of the operation. Rotating the knob drives the moving plate to move, thereby changing the distance between the fixing plate and the moving plate.

[0017] By setting the rotating and tilting component, it is convenient to drive the steel pipe to tilt at a certain angle, thereby facilitating the discharge of the pickling solution inside the steel pipe, preventing waste of the pickling solution, and preventing the pickling solution from falling down into the working area, improving the safety of the operator. When the cylinder contracts, it drives the rotating plate to rotate, and the rotation of the rotating plate drives the placement plate to tilt. When the placement plate tilts, the steel pipe is limited by the fixed plate and the moving plate to prevent the steel pipe from falling. The tilting of the placement plate drives the steel pipe to tilt, and the pickling solution inside the steel pipe is discharged. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of the present utility model;

[0020] Figure 2 Structural schematic diagram of the separated state of the present utility model;

[0021] Figure 3 For Figure 1 Enlarged structural schematic diagram at position A in

[0022] Figure 4 Structural schematic diagram of the limiting plate;

[0023] Figure 5 Structural schematic diagram of the rotating and tilting component.

[0024] The labels in the drawings are: 1, base; 2, rotating and tilting component; 3, pickling tank; 4, placement plate; 5, limiting plate; 6, moving plate; 7, fixed plate; 8, upper side plate; 9, turntable; 10, column; 11, limiting groove; 12, first screw; 13, first motor; 14, round hole; 15, chute; 16, second screw; 17, drain pipe; 18, valve; 19, lower side plate; 20, second motor; 21, lifting plate; 22, knob; 23, slider; 24, groove; 25, ejector rod; 201, mounting seat; 202, cylinder; 203, rotating rod; 204, rotating plate; 205, rotating groove; 206, connecting block; 207, roller. Detailed Description of the Embodiment

[0025] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0026] This specific embodiment is an acid pickling device for seamless steel pipes of high-pressure boilers, and its structural schematic diagram is as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown in the figure, it includes a pickling tank 3 and an upper side plate 8. The upper side plate 8 is fixedly installed at the center position on one side of the upper end of the pickling tank 3. A turntable 9 is rotatably installed on the upper side plate 8. A column 10 is installed on the upper surface of the turntable 9. A limiting groove 11 is opened in the column 10. A first motor 13 is installed at the top of the column 10. The first motor 13 is connected with a first screw rod 12. The first screw rod 12 is threadedly connected with a lifting plate 21. A rotating and tilting assembly 2 is installed on the upper surface of the lifting plate 21. The lifting plate 21 is slidably matched with the limiting groove 11. A lower side plate 19 is provided at the lower part of the upper side plate 8. The lower side plate 19 is fixedly installed on the side surface of the pickling tank 3. A second motor 20 is installed on the upper surface of the lower side plate 19. A vertical rod is driven by the second motor 20, and the vertical rod is connected with the turntable 9. A base 1 is installed at the lower part of the pickling tank 3. A drain pipe 17 is provided at the lower end of the side surface of the pickling tank 3. A valve 18 is provided on the drain pipe 17. The lower end of the rotating and tilting assembly 2 is connected with a placing plate 4. A chute 15 is opened in the placing plate 4. A second screw rod 16 is rotatably installed in the chute 15. The second screw rod 16 is connected with a knob 22. One end of the upper surface of the placing plate 4 is installed with a fixing plate 7. A limiting plate 5 is installed at the middle position of the placing plate 4. The second screw rod 16 is threadedly connected with a slider 23. The slider 23 is adapted to the chute 15. The upper end of the slider 23 is connected with a moving plate 6. Multiple groups of uniformly distributed round holes 14 are opened in the moving plate 6 and the fixing plate 7. Multiple groups of uniformly distributed grooves 24 are opened in the limiting plate 5. Multiple uniformly distributed ejector rods 25 are installed in the grooves 24. The upper end of the ejector rod 25 is arc-shaped. When pickling the steel pipe, start the second motor 20 to drive the turntable 9 to rotate. The rotation of the turntable 9 drives the column 10, the lifting plate 21, the rotating and tilting assembly 2, and the placing plate 4 to rotate, so that the placing plate 4 moves away from the pickling tank 3. Then, adjust the distance between the moving plate 6 and the fixing plate 7 according to the length of the steel pipe. Specifically, rotate the knob 22 to drive the second screw rod 16 to rotate. The rotation of the second screw rod 16 drives the slider 23 to move horizontally. When the slider 23 moves horizontally, it drives the moving plate 6 to move horizontally, thus completing the adjustment of the distance between the moving plate 6 and the fixing plate 7. Then, place the steel pipe into the groove 24 in the limiting plate 5, and the two ends of the steel pipe are in contact with the moving plate 6 and the fixing plate 7. The outer part of the steel pipe is in contact with the ejector rod 25. Then, start the second motor 20 to drive the placing plate 4 back to directly above the pickling tank 3. Then, start the first motor 13 to drive the first screw rod 12 to rotate. The rotation of the first screw rod 12 drives the lifting plate 21, the rotating and tilting assembly 2, the placing plate 4, and the steel pipe to move downward into the interior of the pickling tank 3 to start pickling the steel pipe. After pickling is completed, start the first motor 13 to drive the placing plate 4 to move upward. After the placing plate 4 rises out of the pickling solution, use the rotating and tilting assembly 2 to drain the pickling solution inside the steel pipe.

[0027] Refer to Figure 1 、 Figure 2 、 Figure 5As shown, the rotating and tilting assembly 2 includes a mounting seat 201, which is fixedly mounted on the upper surface of the lifting plate 21, and a cylinder 202 is fixedly passed through the upper end of the mounting seat 201, and the cylinder 202 is connected to a connecting block 206, and rollers 207 are arranged at both ends of the connecting block 206. The rotating and tilting assembly 2 also includes a rotating plate 204, and the lower end of the rotating plate 204 is fixedly connected to the placing plate 4, and rotating rods 203 are arranged at both ends of the rotating plate 204, and the rotating rod 203 is rotatably connected to the lifting plate 21, and a rotating groove 205 is opened on the upper surface of the rotating plate 204, and the cylinder 202 passes through the rotating groove 205, and the rollers 207 are arranged at both ends of the rotating plate 204. The wheel 207 contacts the surface of the rotating plate 204, and the starting cylinder 202 contracts to drive the connecting block 206 to move backward. The connecting block 206 moves backward and drives the roller 207 to move backward. When the connecting block 206 drives the roller 207 to move, the connecting block 206 slides along the upper surface of the rotating plate 204, and the roller 207 moves backward and drives the rotating plate 204 to rotate. The rotation of the rotating plate 204 drives the placement plate 4 to tilt. When the placement plate 4 tilts, the steel pipe is limited by the fixed plate 7 and the movable plate 6 to prevent the steel pipe from falling. The tilt of the placement plate 4 drives the steel pipe to tilt, and the pickling liquid inside the steel pipe is discharged.

[0028] Working principle: When pickling the steel pipe, start the second motor 20 to drive the turntable 9 to rotate, and the rotation of the turntable 9 drives the column 10, the lifting plate 21, the rotating and tilting component 2, and the placement plate 4 to rotate, so that the placement plate 4 is away from the pickling tank 3 (the steel pipe is generally pickled in a 10% to 20% sulfuric acid solution at a temperature of 40°C to improve the safety of operation). Then, the distance between the movable plate 6 and the fixed plate 7 is adjusted according to the length of the steel pipe. Specifically, the knob 22 is turned to drive the second screw 16 to rotate, and the second screw 16 rotates to drive the slider 23 to move horizontally. When the slider 23 moves horizontally, it drives the movable plate 6 to move horizontally, thereby completing the adjustment of the distance between the movable plate 6 and the fixed plate 7. Through the setting of the knob 22, the second screw 16, and the slider 23, it is convenient to drive the movable plate 6 to move horizontally, and then it is convenient to adjust the distance between the movable plate 6 and the fixed plate 7, and it is convenient to limit the steel pipes of different lengths, so that when the steel pipe is tilted in the next step, the steel pipe will not fall, thereby improving the safety of operation;

[0029] Then, the steel pipe is placed in the groove 24 in the limit plate 5, and the two ends of the steel pipe are in contact with the movable plate 6 and the fixed plate 7, and the outside of the steel pipe is in contact with the push rod 25 (the push rod 25 has a small contact area with the steel pipe to prevent the steel pipe from being blocked in a large area and not being fully pickled). Then, the second motor 20 is started to drive the placement plate 4 back to the top of the pickling tank 3, and then the first motor 13 is started to drive the first screw 12 to rotate. The rotation of the first screw 12 drives the lifting plate 21, the rotating tilting component 2, the placement plate 4, and the steel pipe to move downward into the pickling tank 3, and the steel pipe begins to be pickled. After the pickling is completed, the first motor 13 is started to drive the placement plate 4 to move upward;

[0030] After the placement plate 4 rises out of the pickling solution, the rotating and tilting assembly 2 is used to drain the pickling solution inside the steel pipe. Specifically, the contraction of the starting cylinder 202 drives the connecting block 206 to move backward. The backward movement of the connecting block 206 drives the roller 207 to move backward. When the connecting block 206 drives the roller 207 to move, the connecting block 206 slides along the upper surface of the rotating plate 204. The backward movement of the roller 207 drives the rotating plate 204 to rotate. The rotation of the rotating plate 204 drives the placement plate 4 to tilt. When the placement plate 4 tilts, the steel pipe is limited by the fixing plate 7 and the moving plate 6 to prevent the steel pipe from falling. The tilting of the placement plate 4 drives the steel pipe to tilt, and the pickling solution inside the steel pipe is drained. Through the setting of the rotating and tilting assembly 2, it is convenient to drive the steel pipe to tilt at a certain angle, thereby facilitating the drainage of the pickling solution inside the steel pipe, preventing the waste of the pickling solution, and preventing the pickling solution from falling downward into the working area, improving the safety of the operators.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pickling device for seamless steel tubes for high-pressure boilers, comprising a pickling tank (3) and an upper side plate (8), characterized in that: The upper side plate (8) is fixedly mounted at a central position on one side of the upper end of the pickling tank (3); a turntable (9) is rotatably mounted on the upper side plate (8); a column (10) is mounted on the upper surface of the turntable (9); a limiting groove (11) is provided on the column (10); a first motor (13) is mounted on the top of the column (10); the first motor (13) is connected to a first screw rod (12); the first screw rod (12) is threadedly connected to a lifting plate (21); a rotating and tilting assembly (2) is mounted on the upper surface of the lifting plate (21).

2. A pickling device for seamless steel tubes for high pressure boilers according to claim 1, characterized in that: The lifting plate (21) is slidably matched with the limiting groove (11); a lower side plate (19) is provided at the lower part of the upper side plate (8); the lower side plate (19) is fixedly installed on the side of the pickling tank (3); a second motor (20) is installed on the upper surface of the lower side plate (19); a vertical rod is provided to drive the second motor (20); and the vertical rod is connected to the turntable (9).

3. A pickling device for high pressure boiler seamless steel tube according to claim 1, characterized in that: A base (1) is installed at the lower part of the pickling tank (3), a drainage pipe (17) is provided at the lower end of the side of the pickling tank (3), and a valve (18) is provided on the drainage pipe (17).

4. A pickling device for high-pressure boiler seamless steel tubes according to claim 3, characterized in that: The lower end of the rotating and tilting component (2) is connected to a placement plate (4), a slide groove (15) is provided in the placement plate (4), a second screw rod (16) is rotatably installed in the slide groove (15), the second screw rod (16) is connected to a knob (22), a fixed plate (7) is installed at one end of the upper surface of the placement plate (4), a limit plate (5) is installed in the middle position of the placement plate (4), the second screw rod (16) is threadedly connected to a slider (23), the slider (23) is adapted to the slide groove (15), the upper end of the slider (23) is connected to a movable plate (6), and a plurality of groups of evenly distributed circular holes (14) are provided in the movable plate (6) and the fixed plate (7).

5. A pickling device for seamless steel tubes for high pressure boilers according to claim 4, characterized in that: The limiting plate (5) is provided with a plurality of groups of evenly distributed grooves (24), and evenly distributed push rods (25) are installed in the grooves (24), and the upper ends of the push rods (25) are arranged in an arc shape.

6. A pickling device for high-pressure boiler seamless steel tubes according to claim 4, characterized in that: The rotating and tilting assembly (2) comprises a mounting seat (201), the mounting seat (201) being fixedly mounted on the upper surface of the lifting plate (21), a cylinder (202) being fixedly passed through the upper end of the mounting seat (201), the cylinder (202) being connected to a connecting block (206), and rollers (207) being provided at both ends of the connecting block (206).

7. A pickling device for seamless steel tubes for high pressure boilers according to claim 6, characterized in that: The rotating and tilting assembly (2) further comprises a rotating plate (204), the lower end of which is fixedly connected to the placement plate (4), rotating rods (203) are provided at both ends of the rotating plate (204), the rotating rods (203) are rotatably connected to the lifting plate (21), a rotating groove (205) is provided on the upper surface of the rotating plate (204), the cylinder (202) passes through the rotating groove (205), and the roller (207) is in contact with the surface of the rotating plate (204).

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