Proportional direct-acting hydraulic pressure regulating tower

Abstract

The utility model relates to a proportional direct-acting hydraulic pressure regulating tower which comprises a lower valve body and an upper valve body, the upper valve body comprises an upper pipeline, an upper valve cover, a drain opening and an external water tank opening, the lower valve body comprises a lower valve cover and a connecting pipe, a piston body is arranged in a piston cavity, a guide cylinder is arranged in the center of the piston body, and an upper guide opening is formed in the side face of the guide cylinder. A through hole is formed in the center of the piston body; a buoy is arranged in the connecting pipe; a butt-joint sealing surface is arranged at the top of the buoy; a middle sealing ring is arranged in the middle of the inner wall of the connecting pipe, an outer sealing surface is arranged on the outer side of the butt-joint opening, and an inner sealing surface is arranged on the inner side of the butt-joint opening. Opening and closing of the butt joint opening in the bottom of the guide cylinder are achieved through the buoy, when the pressure in the pipeline rises, the buoy rapidly pushes the guide cylinder upwards, pressure of water in the pipeline is relieved through the upper guide opening, when the pressure of the pipeline drops, the butt joint opening is rapidly opened, water is rapidly supplemented into the pipeline, the response speed is high, fatigue is not prone to occurring, and the adjusting efficiency is high.

Description

Technical Field

[0001] This utility model relates to pipeline systems, and in particular to a proportional direct-acting hydraulic pressure regulating tower. Background Technology

[0002] Surge booster towers are widely used in water conservancy and hydropower projects and urban water supply systems. Water hammer is a common phenomenon in water supply systems, causing significant damage. To mitigate the effects of water hammer, bidirectional surge booster towers are commonly used in the market. For example, Chinese Patent Publication CN101008457A discloses a box-type bidirectional pressure regulating tower, including an upper chamber and a lower chamber that are connected to each other. The upper chamber is equipped with a cover plate and a manhole cover, and an overflow pipe is installed on the side wall of the upper chamber. The lower chamber is equipped with a flow guide piston and a piston rod installed inside the flow guide piston. The control diaphragm is pressed tightly onto the flow guide piston by a diaphragm pressure plate at the top of the flow guide piston. A one-way sealing plate is fixed to the piston rod as a whole, and a spring keeps the one-way sealing plate located on the sealing valve seat of the guide piston in the normal state. The diaphragm pressure plate, control diaphragm, flow guide piston, spring, piston rod, and one-way sealing plate constitute a motion control assembly. This motion control assembly is installed in the lower chamber with a sealing ring, and the upper chamber presses the outer edge of the control diaphragm tightly against the lower chamber. However, the above-mentioned method uses a spring as the power for opening and closing, resulting in slow response speed, low pressure regulation efficiency, and difficulty in achieving dynamic pressure balance. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a proportional direct-acting hydraulic pressure regulating tower.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a proportional direct-acting hydraulic pressure regulating tower, including a lower valve body and an upper valve body disposed on top of the lower valve body. The upper valve body includes an upper pipe, an upper valve cover connecting to the bottom of the upper pipe, a drain port connecting to the top side of the upper pipe, and an external water tank port. The lower valve body includes a lower valve cover and a connecting pipe connecting to the bottom of the lower valve cover. The upper valve cover and the lower valve cover are connected and assembled to form a piston cavity. A piston body that moves up and down along the piston cavity is provided inside the piston body. A downwardly extending guide cylinder is provided at the center of the piston body. The guide cylinder extends downward into the connecting pipe. The guide tube has an upper guide port that penetrates the side wall of the guide tube. The bottom of the guide tube has a docking opening. The piston body has a through hole at the center that connects to the top opening of the guide tube. The connecting pipe below the guide tube has a float that floats up and down. The top of the float has a docking sealing surface that mates with the docking opening. When the float is at the end of its lower stroke, the top of the float disengages from the docking opening. The middle of the inner wall of the connecting pipe has an intermediate sealing ring. The outside of the docking opening has an outer sealing surface that mates with the intermediate sealing ring. The inside of the docking opening has an inner sealing surface that seals with the top of the float.

[0005] As a further improvement to this design, a guide rod is provided inside the connecting pipe below the intermediate sealing ring, and the guide rod limits the vertical travel of the float.

[0006] As a further improvement to this design, a float guide cylinder is provided inside the connecting pipe below the intermediate sealing ring. The side wall of the float guide cylinder is provided with a lower guide port that penetrates the side wall of the float guide cylinder. The float is placed inside the float guide cylinder. The guide rod is located at the bottom of the float guide cylinder. The side wall of the connecting pipe is provided with a connection port.

[0007] As a further improvement to this design, a baffle is provided at the top center of the piston body. The baffle is directly opposite the top opening of the through hole. The edge of the baffle is connected to the piston through ribs, and there are hollow holes between the ribs.

[0008] As a further improvement to this design, the piston body edge is provided with piston upper limit posts, which are distributed in a ring array around the center of the piston.

[0009] As a further improvement to this design, a diaphragm is provided on the edge of the piston body, and the diaphragm is connected to the inner wall of the piston cavity, that is, the inner wall of the piston cavity and the edge of the piston body are sealed.

[0010] As a further improvement to this design, the bottom opening of the guide tube is mechanically detachably connected to an outer sealing ring and an inner sealing ring, with the outer sealing surface disposed on the outer sealing ring and the inner sealing ring disposed on the inner sealing ring.

[0011] As a further improvement to this design, the top area of ​​the piston body is larger than the bottom area of ​​the float.

[0012] The beneficial effects of this utility model are: This utility model realizes the opening and closing of the bottom docking opening of the guide tube through the float. When the pressure in the pipeline rises, the float quickly pushes the guide tube upward, and the water in the pipeline is depressurized through the upper guide port. When the pipeline pressure drops, the docking opening can be opened quickly to quickly replenish water into the pipeline. It has a fast response speed, is not prone to fatigue, and has high adjustment efficiency. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0015] Figure 2 This is a schematic cross-sectional view of the present invention.

[0016] Figure 3 This is a partial cross-sectional schematic diagram of the present invention.

[0017] In the diagram: 1. Connection port, 2. Lower valve body, 20. Lower valve cover, 21. Connecting pipe, 3. Upper valve body, 30. Upper pipe, 31. Upper valve cover, 4. Float guide tube, 5. Flow guide tube, 6. Piston body, 7. Piston upper limit column, 8. Baffle, 9. Rib plate, 10. Diaphragm, 11. Piston chamber, 12. Upper flow guide port, 13. Lower flow guide port, 14. Float, 15. Guide rod, 16. External water tank port, 17. Drain port, 18. Inner sealing ring, 19. Outer sealing ring, 40. Butt sealing surface, 41. Intermediate sealing ring, 42. Butt opening, 43. Through hole, 44. Outer sealing surface, 45. Inner sealing surface. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0019] Example: A proportional direct-acting hydraulic pressure regulating tower includes a lower valve body 2 and an upper valve body 3 disposed on top of the lower valve body 2. The upper valve body 3 includes an upper pipe 30, an upper valve cover 31 connecting to the bottom of the upper pipe 30, a drain port 17 connecting to the top side of the upper pipe 30, and an external water tank port 16. The lower valve body 2 includes a lower valve cover 20 and a connecting pipe 21 connecting to the bottom of the lower valve cover 20. The upper valve cover 31 and the lower valve cover 20 are connected and assembled to form a piston chamber 11. A piston body 6 that moves up and down along the piston chamber 11 is provided inside the piston chamber 11. A downwardly extending guide tube 5 is provided at the center of the piston body 6. The guide tube 5 extends downward into the connecting pipe 21. A through-hole is provided on the side of the guide tube 5. The guide tube 5 has an upper guide port 12 on its side wall. The bottom of the guide tube 5 is provided with a docking opening 42. The piston body 6 has a through hole 43 at its center that connects to the top opening of the guide tube 5. The connecting pipe 21 below the guide tube 5 is provided with a float 14 that floats up and down. The top of the float 14 is provided with a docking sealing surface 40 that cooperates with the docking opening 42. When the float 14 is at the end of its lower stroke, the top of the float 14 is disengaged from the docking opening 42. The middle part of the inner wall of the connecting pipe 21 is provided with an intermediate sealing ring 41. The outside of the docking opening 42 is provided with an outer sealing surface 44 that cooperates with the intermediate sealing ring 41. The inside of the docking opening 42 is provided with an inner sealing surface 45 that seals with the top of the float 14.

[0020] The float 14 enables the opening and closing of the bottom docking opening 42 of the guide tube 5. When the pressure inside the pipe rises, the float 14 quickly pushes the guide tube 5 upward, and the water in the pipe is depressurized through the upper guide port 12. When the pressure in the pipe drops, the docking opening 42 can be opened quickly to replenish water into the pipe. It has a fast response speed, is not prone to fatigue, and has high adjustment efficiency.

[0021] Please see Figure 2 In order to facilitate the control and guidance of the lifting stroke of the float 14, a guide rod 15 is provided in the connecting pipe 21 below the intermediate sealing ring 41. The guide rod 15 limits the vertical stroke of the float 14.

[0022] Please see Figure 2 In order to counteract the impact of lateral water flow on the float 14, a float guide cylinder 4 is provided in the connecting pipe 21 below the intermediate sealing ring 41. The side wall of the float guide cylinder 4 is provided with a lower guide port 13 that penetrates the side wall of the float guide cylinder 4. The float 14 is placed in the float guide cylinder 4. The guide rod 15 is provided at the bottom of the float guide cylinder 4. The side wall of the connecting pipe 21 is provided with a connection port 1.

[0023] Please see Figure 2 In order to facilitate the lifting of the piston body 6 during depressurization, a baffle 8 is provided at the top center of the piston body 6. The baffle 8 is directly opposite the top opening of the through hole 43. The edge of the baffle 8 is connected to the piston through ribs 9, and there are hollow holes between the ribs 9.

[0024] Please see Figure 2 To prevent the piston body 6 from exceeding its stroke, the piston body 6 is provided with piston upper limit posts 7 on its edge, and the piston upper limit posts 7 are distributed in a ring array around the center of the piston.

[0025] Please see Figure 2 To facilitate sealing around the piston body 6, a diaphragm 10 is provided on the edge of the piston body 6. The diaphragm 10 is connected to the inner wall of the piston cavity 11, that is, the inner wall of the piston cavity 11 is sealed with the edge of the piston body 6.

[0026] Please see Figure 3 In order to reduce maintenance and processing costs, the bottom opening of the guide tube 5 is mechanically detachably connected to an outer sealing ring 19 and an inner sealing ring 18. The outer sealing surface 44 is disposed on the outer sealing ring 19, and the inner sealing ring 18 is disposed on the inner sealing ring 18.

[0027] Please see Figure 2 In order to achieve proportional adjustment and keep the pressure regulating tower closed with a smaller pressure, the top area of ​​the piston body 6 is larger than the bottom area of ​​the float 14.

[0028] When the pressure regulating tower is shut down, the top of the float 14 abuts against the docking opening 42 under pipeline pressure, the guide tube 5 reaches its lower limit, and the outer sealing surface 44 fits against the intermediate sealing ring 41. During pressure relief, the float 14, under pipeline pressure, raises the guide tube 5, separating the outer sealing surface 44 from the intermediate sealing ring 41. The connecting pipe 21 connects to the inside of the guide tube 5 through the upper guide port 12, allowing the water in the pipeline to depressurize. During water replenishment, the float 14 descends and separates from the guide tube 5, the docking opening 42 fully opens, and water is rapidly replenished into the pipeline.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A proportional direct acting hydraulic surge tank comprising a lower valve body, an upper valve body disposed on top of the lower valve body, characterized in that, The upper valve body comprises an upper pipe, an upper valve cover communicating with the bottom of the upper pipe, a water outlet communicating with the side of the top of the upper pipe, and an outer water tank port, the lower valve body comprises a lower valve cover, a connecting pipe communicating with the bottom of the lower valve cover, the upper valve cover is connected with the lower valve cover and spliced into a piston cavity, a piston body is arranged in the piston cavity and ascends and descends along the piston cavity, a flow guide cylinder is arranged in the center of the piston body and extends downward, the flow guide cylinder extends downward into the connecting pipe, an upper flow guide port is arranged on the side wall of the flow guide cylinder and penetrates the side wall of the flow guide cylinder, a docking opening is arranged at the bottom of the flow guide cylinder, a through hole is arranged in the center of the piston body and communicates with the top opening of the flow guide cylinder, a float is arranged in the connecting pipe below the flow guide cylinder and floats up and down, a docking sealing surface is arranged on the top of the float and matches the docking opening, when the float is at the lower stroke end point, the top of the float is separated from the docking opening, a middle sealing ring is arranged in the middle of the inner wall of the connecting pipe, an outer sealing surface is arranged outside the docking opening and matches the middle sealing ring, and an inner sealing surface is arranged inside the docking opening and sealingly matches the top of the float.

2. A proportional direct acting hydraulic surge tower as claimed in claim 1, wherein, A guide rod is arranged in the connecting pipe below the middle sealing ring and limits the up-and-down stroke of the float.

3. A proportional direct acting hydraulic surge tower according to claim 2, characterised in that A float guide cylinder is arranged in the connecting pipe below the middle sealing ring, a lower flow guide port is arranged on the side wall of the float guide cylinder and penetrates the side wall of the float guide cylinder, the float is placed in the float guide cylinder, the guide rod is arranged at the bottom of the float guide cylinder, and a connecting port is arranged on the side wall of the connecting pipe.

4. A proportional direct acting hydraulic pressure regulating tower as claimed in claim 1, wherein A baffle is arranged at the top of the center of the piston body and faces the top opening of the through hole, the edge of the baffle is connected with the piston through a rib plate, and the rib plates are hollowed out.

5. A proportional direct acting hydraulic pressure regulating tower as claimed in claim 1, wherein A piston upper limiting column is arranged on the edge of the piston body and is arranged in an annular array around the center of the piston.

6. A proportional direct acting hydraulic surge tower according to claim 5, characterised in that A diaphragm is arranged on the edge of the piston body and is connected with the inner wall of the piston cavity, that is, the inner wall of the piston cavity is sealed with the edge of the piston body.

7. A proportional direct acting hydraulic surge control tower as claimed in claim 5 wherein, An outer sealing ring and an inner sealing ring are detachably connected to the bottom opening of the flow guide cylinder, the outer sealing surface is arranged on the outer sealing ring, and the inner sealing ring is arranged on the inner sealing surface.

8. A proportional direct acting hydraulic pressure regulating column according to claim 1, wherein The top area of the piston body is greater than the bottom area of the float.

Images