High-pressure pickling device for super-long coil pipe

Abstract

The utility model provides an ultra-long coil pipe high-pressure pickling device which comprises a pressure barrel, a booster pump, a liquid storage barrel and a diaphragm pump, an outlet control pipeline is arranged on the pressure barrel, an inlet control pipeline is arranged on the liquid storage barrel, a first control pipeline is arranged between the booster pump and the pressure barrel, and a second control pipeline is arranged between the booster pump and the liquid storage barrel. A second control pipeline is arranged between the pressure barrel and the diaphragm pump, a third control pipeline is arranged between the diaphragm pump and the liquid storage barrel, and an air inlet pipeline is arranged between the booster pump and the diaphragm pump. According to the device, the booster pump is driven by compressed air, and acid liquor in the liquid storage barrel is injected into the super-long coil pipe by utilizing high pressure, so that the inner resistance of the small-diameter super-long coil pipe is overcome, liquid circulation is realized, and the effects of acid pickling, passivation and cleaning are achieved. During operation, only the corresponding valve needs to be opened, and the operation is simple.

Description

Technical Field

[0001] This utility model relates to the field of pickling and passivation of coils, specifically to a high-pressure pickling device for ultra-long coils. Background Technology

[0002] Coils are widely used components in heat transfer or reaction equipment in industries such as chemical, pharmaceutical, and food processing. Their pickling and passivation treatment is a key process to ensure equipment performance and lifespan. It is well known that the smaller the diameter and the longer the length of the coil, the greater its internal resistance, especially for ultra-long coils with an inner diameter of less than 6mm. Current pickling equipment struggles to overcome this internal resistance to achieve the desired pickling and passivation cleaning, and pumps are easily damaged when liquid flow is restricted. Utility Model Content

[0003] The purpose of this utility model is to provide a high-pressure pickling device for ultra-long coils, which solves the technical problem pointed out in the background art that existing pickling devices are unable to overcome the internal resistance of long and thin coils for pickling and passivation.

[0004] To achieve the above objectives, this utility model provides an ultra-long coil high-pressure acid washing device, including a pressure tank, a booster pump, a storage tank, and a diaphragm pump. The pressure tank is provided with an outlet control pipeline, the storage tank is provided with an inlet control pipeline, a first control pipeline is provided between the booster pump and the pressure tank, a second control pipeline is provided between the pressure tank and the diaphragm pump, a third control pipeline is provided between the diaphragm pump and the storage tank, and an air inlet pipeline is provided between the booster pump and the diaphragm pump.

[0005] Preferably, the pressure tank and the liquid storage tank are mounted on the installation platform, and the booster pump and the diaphragm pump are positioned between the pressure tank and the liquid storage tank.

[0006] Preferably, a check valve is provided on the second control pipeline.

[0007] Preferably, the pressure tank is provided with a pressure indicating element.

[0008] Preferably, a cleaning pipeline is connected to the third control pipeline.

[0009] Preferably, the pressure tank is provided with a purging pipeline.

[0010] Compared with the prior art, the beneficial effect of this utility model is that by using compressed air to drive a booster pump, the acid in the storage tank is injected into the ultra-long coil under high pressure to overcome the internal resistance of the small-diameter ultra-long coil, thereby realizing liquid circulation and achieving the effects of pickling, passivation, and cleaning. Attached Figure Description

[0011] Figure 1 This is a side view of the present invention;

[0012] Figure 2 This is a side view of the present invention from another angle;

[0013] Figure 3 This is a side view of the present invention from another angle;

[0014] Figure 4 This is a bottom view of the present invention;

[0015] Figure 5 This is a rear view of the present invention;

[0016] In the diagram, 1. Pressure tank; 2. Booster pump; 3. Mounting platform; 4. Storage tank; 5. Diaphragm pump; 6. Outlet control valve; 7. First branch pipe ball valve; 8. Inlet air pipe ball valve; 9. Inlet control valve; 10. Second branch pipe ball valve; 11. Third control valve; 12. Check valve; 13. Second control valve; 14. Purge control valve; 15. First control valve; 16. Discharge control valve; 17. Pressure indicator element; 18. Outlet pipe; 19. First branch pipe; 20. Short pipe; 21. Second branch pipe; 22. Inlet pipe; 23. Third main connection; 24. Cleaning pipe; 25. Third connection; 26. Second main connection; 27. First main connection; 28. Purge pipe; 29. ​​Discharge connection; 30. Second connection; 31. Inlet tee connector; 32. Branch pipe tee connector; 33. First connection; 34. Baffle plate. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The following describes some embodiments of this utility model in detail with reference to the accompanying drawings. Figure 1-5 As shown, the ultra-long coil high-pressure acid washing device of this utility model includes a pressure tank 1, a booster pump 2, a storage tank 4, and a diaphragm pump 5. The pressure tank 1 is a fully enclosed structure, consisting of a lower cover, a cylinder, and an upper cover. The lower cover, upper cover, and cylinder are all threadedly connected. The pressure tank 1 is used to store pressurized acid. An outlet control pipeline is provided on the pressure tank 1, including an outlet control valve 6 and an outlet pipe 18. One end of the outlet pipe 18 is located at the bottom of the pressure tank 1, and the outlet control valve 6 is connected to the other end of the outlet pipe 18. The storage tank 4 is located adjacent to the pressure tank 1. The storage tank 4 has an open top structure and is used for adding and returning acid. An inlet control pipeline is provided on the storage tank 4, including an inlet control valve 9 and an inlet pipe 22. One end of the inlet pipe 22 extends into the storage tank 4, and the inlet control valve 9 is connected to the other end of the inlet pipe 22.

[0023] A booster pump 2 and a diaphragm pump 5 are installed between a pressure tank 1 and a storage tank 4. A first control pipeline is provided between the booster pump 2 and the pressure tank 1. The first control pipeline includes a first control valve 15, a first main connector 27, and a first connecting connector 33. One end of the first connecting connector 33 extends into the pressure tank 1 through the top cover of the pressure tank 1. One end of the first main connector 27 is connected to the air outlet of the booster pump 2. The first control valve 15 is located between the first main connector 27 and the first connecting connector 33. A second control pipeline is provided between the diaphragm pump 5 and the pressure tank 1. The second control pipeline includes a second control valve 13, a second main connector 26, and a second connecting connector 30. One end of the second connecting connector 30 extends into the pressure tank 1 through the top cover of the pressure tank 1. One end of the second main connector 26 is connected to the outlet of the diaphragm pump 5. The second control valve 13 is located between the second main connector 26 and the second connecting connector 30. In a preferred embodiment, a check valve 12 is provided on the second control line to prevent acid in the pressure tank 1 from flowing back to the diaphragm pump 5.

[0024] A third control pipeline is provided between the diaphragm pump 5 and the storage tank 4. This third control pipeline includes a third control valve 11, a third main connector 23, and a third connecting connector 25. One end of the third connecting connector 25 is connected to the inlet of the diaphragm pump 5, and one end of the third main connector 24 is located inside the storage tank 4. The third control valve 11 is located between the third main connector 23 and the third connecting connector 25. Preferably, a cleaning pipeline is also provided on the third pipeline. This cleaning pipeline includes a cleaning pipe 24, which is connected to the third control valve 11. The third control valve 11 is a high-pressure three-way ball valve. One end of the cleaning pipe 24 is connected to the bottom outlet of the third control valve 11, and the other end is connected to a water source. The cleaning pipeline can clean the acid-washed coils.

[0025] An air intake pipe is provided between the booster pump 2 and the diaphragm pump 5. The air intake pipe includes an inlet air pipe ball valve 8, a first branch pipe 19, and a second branch pipe 21. The first branch pipe 19 and the second branch pipe 21 are respectively connected to the two outlet ends of the inlet tee joint 31. The inlet air pipe ball valve 8 is connected to the inlet of the inlet tee joint 31 through a short pipe 20. The other end of the first branch pipe 19 is connected to a first branch pipe ball valve 7. The rear end of the first branch pipe ball valve 7 is connected to a branch pipe tee joint 32. The two outlets of the branch pipe tee joint 32 are respectively connected to the air inlet and drive port of the booster pump 2 through connecting pipes. The other end of the second branch pipe 21 is connected to a second branch pipe ball valve 10. The outlet of the second branch pipe ball valve 10 is connected to the outlet of the diaphragm pump 5 through a connecting pipe.

[0026] For ease of movement, the pressure tank 1, booster pump 2, storage tank 4, and diaphragm pump 5 can all be mounted on a square mounting platform 3. The lower cover of the pressure tank 1 is fixed to one end of the panel of the mounting platform 3 with bolts, and the storage tank 4 can be fixed to the other end of the panel of the mounting platform 3 by welding. A partition 34 is provided between the pressure tank 1 and the storage tank 4, with the booster pump 2 located below the partition 34 and the diaphragm pump 5 located above the partition 34.

[0027] The pressure tank 1 is also equipped with a discharge pipeline, which includes a discharge control valve 16 and a discharge connector 29. The discharge control valve 16 is installed on the upper cover of the pressure tank 1 via a short pipe, and the discharge connector 29 is connected to the outlet of the discharge control valve 16. The discharge pipeline is used to discharge air from the pressure tank 1 during pickling. Preferably, the pressure tank 1 is also equipped with a pressure indicating element 17, which can be a pressure gauge, pressure sensor, etc. The pressure indicating element 17 can clearly display the pressure value inside the pressure tank 1, avoiding overpressure operation. Furthermore, the pressure tank 1 is also equipped with a purge pipeline, which includes a purge control valve 14 and a purge pipe 28. One end of the purge control valve 14 is connected to the upper cover of the pressure tank 1, and the other end is connected to the purge pipe 28.

[0028] The operation process of this utility model is as follows: During pickling, first confirm that all valves on the pipeline are closed, and connect both ends of the coil to be pickled to the outlet control valve 6 and the inlet control valve 9 respectively. Add sufficient acid to the storage tank 4, connect the gas source to the inlet of the inlet gas pipe ball valve 8, and place the return tank below the discharge pipe 29. Then open the second control valve 13 and the discharge control valve 16, and switch the third control valve 11 to connect the third main pipe 23 and the third pipe 25. Open the inlet gas pipe ball valve 8 and the second branch pipe ball valve 10, and start the diaphragm pump 5. The acid in the storage tank 4 enters the diaphragm pump 5 through the third main pipe 23 and the third pipe 25, and flows into the pressure tank 1 through the second main pipe 26 and the second pipe 30. As the acid in the pressure tank 1 continues to flow in, the air in the pressure tank 1 is discharged from the discharge pipe 29 until acid drips from the discharge pipe 29. At this time, close the second branch pipe ball valve 10, the second control valve 13 and the discharge control valve 16, and the diaphragm pump 5 stops working. Open the first branch pipe ball valve 7 and the first control valve 15, and start the booster pump 2. Compressed air is pressurized by the booster pump 2 and enters the pressure tank 1 through the first main pipe 27. The pressure value in the pressure tank 1 is fed back through the pressure indicator element 17. When the pressure rises to about 10MPa, open the outlet control valve 6 and the inlet control valve 9. Under high pressure, the acid flows into the head of the coil to be pickled through the outlet pipe 18 and flows out from the tail. It then flows back into the storage tank 4 through the inlet pipe 22 until no acid flows out of the coil. After pickling is completed, close all valves and then proceed with cleaning.

[0029] During cleaning, connect the cleaning pipe 24 to the water source, disconnect the tail end of the coil from the inlet control valve 9, and immerse the tail end of the coil in the water source. Open the second control valve 13 and the discharge control valve 16, and switch the third control valve 11 to connect the cleaning pipe 24 and the third connecting pipe 25. Open the inlet air pipe ball valve 8 and the second branch pipe ball valve 10, and start the diaphragm pump 5. Clean water enters the diaphragm pump 5 through the cleaning pipe 24 and the third connecting pipe 25, and flows into the pressure tank 1 through the second main connecting pipe 26. The gas in the pressure tank 1 is discharged from the discharge connecting pipe 29. When clean water begins to drip from the discharge pipe 29, close the second branch pipe ball valve 10, the second control valve 13, and the discharge control valve 16, and the diaphragm pump 5 stops working. Open the first branch pipe ball valve 7 and the first control valve 15, and start the booster pump 2. Compressed air is pressurized by the booster pump 2 and enters the pressure tank 1 through the first main connecting pipe 27. When the pressure in pressure tank 1 rises to approximately 10 MPa, open outlet control valve 6. High-pressure clean water from pressure tank 1 flows into the coil head through outlet pipe 18 and returns to the water source from the coil tail until no more clean water flows out of the coil. The cleaning is then complete, and all valves are closed. Finally, purge is performed.

[0030] During purging, connect the purging pipe 28 to compressed air, and open the outlet control valve 6 and the purging control valve 14 in sequence. The compressed air enters the pressure tank 1 through the purging pipe 28 and flows through the coil from the outlet pipe 18 to dry the inner wall of the coil.

[0031] The basic principles and advantages of this utility model have been described above. For those skilled in the art, the above embodiments are merely illustrative of the technical solutions of this utility model and not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some or all of the technical features by reading this specification. Any obvious substitutions are within the protection scope of this utility model without departing from its concept.

Claims

1. A high-pressure pickling device for ultra-long coiled tubes, characterized in that, The system includes a pressure tank (1), a booster pump (2), a storage tank (4), and a diaphragm pump (5). The pressure tank (1) is equipped with an outlet control pipeline, the storage tank (4) is equipped with an inlet control pipeline, the booster pump (2) and the pressure tank (1) are connected by a first control pipeline, the pressure tank (1) and the diaphragm pump (5) are connected by a second control pipeline, the diaphragm pump (5) and the storage tank (4) are connected by a third control pipeline, and the booster pump (2) and the diaphragm pump (5) are connected by an air inlet pipeline.

2. The ultra-long coil high-pressure pickling device according to claim 1, characterized in that, The pressure tank (1) and the liquid storage tank (4) are mounted on the installation platform (3), and the booster pump (2) and the diaphragm pump (5) are mounted between the pressure tank (1) and the liquid storage tank (4).

3. The ultra-long coil high-pressure pickling device according to claim 2, characterized in that, A check valve (12) is installed on the second control pipeline.

4. The ultra-long coil high-pressure pickling device according to claim 3, characterized in that, The pressure tank (1) is equipped with a pressure indicator element.

5. The ultra-long coil high-pressure pickling device according to claim 4, characterized in that, A cleaning pipeline is connected to the third control pipeline.

6. The ultra-long coil high-pressure pickling device according to claim 5, characterized in that, The pressure tank (1) is equipped with a purging pipeline.

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