Hydraulic energy dissipation structure

Abstract

The utility model discloses a hydraulic energy dissipation structure, which relates to the technical field of water hammer elimination, and comprises a shell and a channel I longitudinally and horizontally penetrating through the shell, a valve cover is arranged in the middle of one end of the top of the shell, the bottom of the valve cover is fixedly connected with a rotating shaft I, and the bottom of the rotating shaft I penetrates through the top end of the outer arc wall of the channel I; four regulating valves which are distributed at equal intervals in a staggered manner are arranged on the side, away from the valve cover, in the shell and located on the two sides of the first channel; according to the utility model, the driving assembly is combined with the regulating valve, so that the switching-on direction of the regulating valve is changed while the valve is opened and closed, namely the regulating valve is in a forward direction without hindering liquid flow when the valve is switched on, and the regulating valve is in a reverse direction when the valve is closed, thereby greatly weakening energy generated by liquid flow due to inertia; the whole process is connected with the opening and closing process of the valve, so that the operation is simpler and more convenient, and the regulating valve can reduce the energy storage of the liquid flow even if the valve is quickly closed or is triggered to be emergently closed due to power failure.

Description

Technical Field

[0001] The utility model relates to the technical field of water hammer elimination, in particular to a hydraulic energy dissipation structure. Background Art

[0002] The water hammer effect refers to the situation where, when the liquid flows freely inside the pipe, due to the smooth inner wall of the pipe, if an open valve is suddenly closed or a closed valve is suddenly opened, the liquid flow will produce a pressure shock on the valve and pipe wall (especially the valve). This pressure shock will quickly reach its maximum value due to the smoothness of the pipe wall and the inertia of the liquid flow, and may cause damage.

[0003] When dealing with water hammer effect, existing pipelines mostly control the speed of closing valves, or use piston-type water hammer eliminators. However, in the face of some emergency situations where valves need to be closed immediately, such as oil leaks, slowly closing the valves will obviously cause more losses. When the piston-type water hammer eliminator is in operation, friction will occur between the piston and the piston tube. Over time, the piston will wear out, reducing its effectiveness in eliminating the water hammer effect. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic energy dissipation structure to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides a hydraulic energy dissipation structure, including a shell and a channel one that runs through the shell longitudinally and horizontally, a valve cover is provided in the middle of one end of the top of the shell, the bottom of the valve cover is fixedly connected to a rotating shaft one, the bottom of the rotating shaft one runs through the top of the outer arc wall of the channel one, and four regulating valves are arranged on both sides of the channel one at equal intervals and staggered on the side away from the valve cover inside the shell, the four regulating valves are fixedly connected to a rotating shaft three on one side wall away from the channel one, and the regulating valves on the same side are provided with the same driving assembly on one side wall away from the channel one, and the driving assembly includes a driving assembly fixedly connected to the rotating shaft one Bevel gear one at the bottom end, bevel gear one is meshed with bevel gear two on both sides away from channel one, bevel gear two is fixedly connected to a rotating shaft two on a side wall away from bevel gear one, rotating shaft two is fixedly connected to a sprocket one on a side wall away from bevel gear two, a rotating shaft three of the two regulating valves closer to sprocket one is provided with a sprocket one with the same structure on a side wall away from channel one, the outer sides of the two sprockets one are meshed with the same chain, a rotating disk is fixedly connected to a side wall away from the regulating valve of rotating shaft three, and the two rotating disks located on the same side are rotatably connected to the same transmission rod on a side wall away from the regulating valve.

[0006] Furthermore, a hemispherical buffer valve is provided on one side of the valve cover close to the regulating valve, and a pipe one is fixedly connected to the bottom of the hemispherical buffer valve, and the bottom of the pipe one passes through the top of the shell and is connected to the channel one, and a buffer assembly is provided inside the hemispherical buffer valve, and the buffer assembly includes a cross fixing frame fixedly connected to the bottom of the inner wall of the hemispherical buffer valve, a sliding rod is fixedly connected to the inner center of the cross fixing frame, and the top of the sliding rod is fixedly connected to the center of the top inner arc wall of the hemispherical buffer valve, and a horizontal arc plate one is slidably connected to the bottom end of the outer arc wall of the sliding rod, and both ends of the bottom of the arc plate one are fixedly connected to the arc plate two, and a conical stopper is fixedly connected to the top end of the outer arc wall of the sliding rod, and the conical surface of the conical stopper is arranged toward the arc plate one.

[0007] Furthermore, the upper and middle parts of the hemispherical buffer valve are hemispherical, the lower and middle parts of the hemispherical buffer valve are inverted frustum, the bottom edge of the arc plate one abuts against the inner arc wall of the lower and middle part of the hemispherical buffer valve, the outer arc walls of the two arc plates two both fit with the inner arc wall of the hemispherical buffer valve, and the side wall of the conical stopper away from the arc plate one abuts against the inner arc wall of the hemispherical buffer valve.

[0008] Furthermore, the regulating valves on both sides of channel 1 inside the shell are horizontally placed cylinders, including a lower flow limiting valve and an upper flow limiting valve detachably connected to the top of the lower flow limiting valve, and a C-shaped slide groove 1 is opened on the side wall close to channel 1 on which the lower flow limiting valve and the upper flow limiting valve are close to each other, and the opening of the slide groove 1 is set toward channel 1. When the lower flow limiting valve is connected to the upper flow limiting valve, the two slide grooves 1 are combined into a C-shaped channel 2, and the through holes at both ends of channel 2 are connected to channel 1.

[0009] Furthermore, a sealing gasket is provided at the joint of the lower flow limiting valve and the upper flow limiting valve, and a sealing gasket is provided at the edge of a side wall of the lower flow limiting valve and the upper flow limiting valve close to the channel one.

[0010] Furthermore, a vertically penetrating slide groove 2 is provided on the side of the top of the valve cover away from the regulating valve, a latch is slidably connected in the slide groove 2, and a plurality of sockets distributed in a circular array are provided on the top of the shell body outside the rotating shaft 1, and the latch fits with the sockets.

[0011] Furthermore, a second slide groove of a matching shape is opened inside the shell at a position corresponding to the regulating valve, the lower flow limiting valve and the upper flow limiting valve are both rotatably connected in the second slide groove, and a storage groove is opened inside the shell at a position corresponding to the driving component.

[0012] Furthermore, a rotation groove is provided inside the shell corresponding to the outer side of the rotating shaft 1, bevel gear 1 and bevel gear 2 are both located in the rotation groove, one end of the rotating shaft 2 close to the bevel gear 2 is located in the rotation groove, and the other end is located in the storage groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By combining the drive component with the regulating valve, the direction of the regulating valve can be changed while the valve is switched. That is, when the valve is switched on, the regulating valve is in the forward direction and does not hinder the flow of liquid. When the valve is closed, the regulating valve is in the reverse direction, which greatly weakens the energy generated by the inertia of the liquid flow. The whole process is connected with the valve switching process, making the operation simpler and more convenient. Even if the valve is closed quickly or the emergency closure is triggered by power failure, the regulating valve can reduce the energy storage of the liquid flow.

[0015] 2. Through the buffer structure inside the water hammer eliminator, the liquid flow weakened by the regulating valve is guided into the pipe one. Under the action of inertia, the liquid flow surges up to lift the arc plate one. Since the arc plate weakens the energy accumulated by the liquid flow that arrives first, the subsequent liquid flow will pass from the outside of the arc plate two with smaller resistance along the inner wall of the top of the hemispherical buffer valve to the top of the arc plate one. Then the conical block guides this part of the liquid flow to work on the arc plate one, dividing the liquid flow into two parts and making the two offset each other, avoiding the wear of the traditional piston and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a hydraulic energy dissipation structure;

[0017] Figure 2 It is a cross-sectional view of the internal structure of a hydraulic energy dissipation structure;

[0018] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0019] Figure 4 for Figure 3 A magnified view of the structure at B in the middle;

[0020] Figure 5 The figure is a schematic diagram of the structure of a buffer component in a hydraulic energy dissipation structure.

[0021] In the figure:

[0022] 10. Shell; 11. Hemispherical buffer valve; 12. Valve cover; 13. Latch; 14. Rotating shaft 1;

[0023] 20. Driving assembly; 21. Bevel gear 1; 22. Bevel gear 2; 23. Rotating shaft 2; 24. Sprocket 1;

[0024] 25. Chain; 26. Turntable; 27. Transmission rod;

[0025] 30. Lower flow limiting valve; 31. Upper flow limiting valve;

[0026] 40. Buffer assembly; 41. Cross fixing frame; 42. Arc plate 1; 43. Arc plate 2;

[0027] 44. Sliding rod; 45. Conical stopper. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-5 , the utility model provides a technical solution:

[0030] See also Figure 1-5 As shown, a hydraulic energy dissipation structure includes a shell 10 and a channel 1 that runs through the shell 10 horizontally and longitudinally. A valve cover 12 is provided in the middle of one end of the top of the shell 10. A rotating shaft 14 is fixedly connected to the bottom of the valve cover 12. The bottom of the rotating shaft 14 runs through the top of the outer arc wall of the channel 1. Four regulating valves are arranged at equal intervals and staggered on both sides of the channel 1 on the side of the shell 10 away from the valve cover 12. A rotating shaft 3 is fixedly connected to one side wall of the channel 1 away from the four regulating valves. The regulating valves on the same side are provided with a same driving assembly 20 on one side wall away from the channel 1. The driving assembly 20 includes a bevel gear 1 21 fixedly connected to the bottom end of the rotating shaft 14. The bevel gear 1 21 is meshedly connected to bevel gears 22 on both sides away from the channel 1. A rotating shaft 23 is fixedly connected to a side wall of the gear 22 away from the bevel gear 1 21, and a sprocket 24 is fixedly connected to a side wall of the rotating shaft 23 away from the bevel gear 22. A sprocket 24 with the same structure is provided on a side wall of the rotating shaft 3 of one of the two regulating valves closer to the sprocket 1 24 away from the channel 1. The outer sides of the two sprockets 24 are meshed with the same chain 25. A rotating disk 26 is fixedly connected to a side wall of the rotating shaft 3 away from the regulating valve. The two rotating disks 26 on the same side are rotatably connected to the same transmission rod 27 on a side wall away from the regulating valve. The driving assembly 20 is used to adjust the direction of the lower flow limiting valve 30 and the upper flow limiting valve 31 while opening and closing the valve, so as to achieve buffering of the liquid flow when the valve is closed in an emergency.

[0031] See also Figure 1-5As shown, a hydraulic energy dissipation structure is provided, wherein a hemispherical buffer valve 11 is provided on one side of the valve cover 12 close to the regulating valve, a pipe 1 is fixedly connected to the bottom of the hemispherical buffer valve 11, the bottom of the pipe 1 passes through the top of the shell 10 and is connected to the channel 1, a buffer assembly 40 is provided inside the hemispherical buffer valve 11, and the buffer assembly 40 comprises a cross fixing frame 41 fixedly connected to the bottom of the inner wall of the hemispherical buffer valve 11, a slide rod 44 is fixedly connected to the inner center of the cross fixing frame 41, the top of the slide rod 44 is fixedly connected to the center of the top inner arc wall of the hemispherical buffer valve 11, and a horizontal arc plate 40 is slidably connected to the bottom end of the outer arc wall of the slide rod 44 2. Both ends of the bottom of the arc plate 1 42 are fixedly connected with the arc plate 2 43, and the top of the outer arc wall of the slide rod 44 is fixedly connected with a conical stopper 45. The conical surface of the conical stopper 45 is arranged toward the arc plate 1 42. The liquid flow will flow into the inside of the pipeline 1 under the action of inertia. The impact force of the liquid flow that arrives first will lift the arc plate 1 42, and the subsequent liquid flow will pass through the gap outside the arc plate 2 43 with smaller resistance. Under the guidance of the inner arc wall at the top of the hemispherical buffer valve 11, it will converge on the conical stopper 45 and be guided to the top of the arc plate 1 42, releasing the stored energy of the arc plate 1 42, that is, dividing the liquid flow into two parts so that the stored energy of the two parts offsets each other.

[0032] See also Figure 1-5 As shown, a hydraulic energy dissipation structure is provided, wherein the upper and middle parts of the hemispherical buffer valve 11 are hemispherical, and the lower and middle parts of the hemispherical buffer valve 11 are inverted truncated cone-shaped. The bottom edge of the arc plate 1 42 abuts against the inner arc wall of the lower and middle parts of the hemispherical buffer valve 11, and the outer arc walls of the two arc plates 43 are both matched with the inner arc wall of the hemispherical buffer valve 11. The side wall of the conical stopper 45 away from the arc plate 1 42 abuts against the inner arc wall of the hemispherical buffer valve 11. The inverted truncated cone shape allows the arc plate 1 42 to stay at the bottom end of the hemispherical buffer valve 11 under normal circumstances, and the hemispherical shape can well guide the forward direction of the liquid flow.

[0033] See also Figure 1-5 As shown, a hydraulic energy dissipation structure is shown, the regulating valves on both sides of the channel 1 inside the shell 10 are horizontally placed cylinders, including a lower flow limiting valve 30 and an upper flow limiting valve 31 detachably connected to the top of the lower flow limiting valve 30, and a C-shaped slide groove 1 is opened on the side of the channel 1 on the side wall where the lower flow limiting valve 30 and the upper flow limiting valve 31 are close to each other, and the opening of the slide groove 1 is set toward the channel 1. When the lower flow limiting valve 30 is connected to the upper flow limiting valve 31, the two slide grooves 1 are combined into a C-shaped channel 2, and the through holes at both ends of the channel 2 are connected with the channel 1. The lower flow limiting valve 30 and the upper flow limiting valve 31 are mirror-set, and the C-shaped slide groove 1 on the side wall where the two are close to each other has the same structure as the Tesla valve.

[0034] See also Figure 1-5As shown, a hydraulic energy dissipation structure, wherein the lower flow limiting valve 30 and the upper flow limiting valve 31 are both provided with sealing gaskets at the joints, and the lower flow limiting valve 30 and the upper flow limiting valve 31 are both provided with sealing gaskets at the edge of the side wall close to the channel one, and the sealing gaskets prevent the liquid from penetrating into the storage groove during pipeline transportation and causing damage to the drive component 20.

[0035] See also Figure 1-5 As shown, a hydraulic energy dissipation structure is provided, wherein a vertically penetrating slide groove 2 is provided on the side of the top of the valve cover 12 away from the regulating valve, a latch 13 is slidably connected in the slide groove 2, a plurality of plug holes distributed in a ring array are provided on the top of the shell 10 and located outside the rotating shaft 14, the latch 13 fits with the plug holes, and the latch 13 is used to fix the valve cover 12 to prevent the valve from rotating due to excessively fast liquid flow rate during pipeline transmission, and also to protect the direction of the regulating valve from being changed by the impact of the liquid flow.

[0036] See also Figure 1-5 As shown, a hydraulic energy dissipation structure is provided, wherein a chute two of matching shape is provided inside the shell 10 at a position corresponding to the regulating valve, the lower flow limiting valve 30 and the upper flow limiting valve 31 are both rotatably connected in the chute two, and a storage groove is provided inside the shell 10 at a position corresponding to the drive assembly 20, the chute two is used for placing the regulating valve, and the storage groove is used for providing space for the drive assembly 20, and a side wall of the storage groove away from the channel one is detachably connected to the shell 10, that is, the side wall of the shell 10 can be removed to inspect the drive assembly 20.

[0037] See also Figure 1-5 As shown, a hydraulic energy dissipation structure is provided, wherein a rotation groove is provided inside the shell 10 corresponding to the outer side of the rotating shaft 14, the bevel gear 1 21 and the bevel gear 2 22 are both located in the rotation groove, one end of the rotating shaft 23 close to the bevel gear 22 is located in the rotation groove, and the other end is located in the storage groove, the bevel gear 1 21 and the two bevel gears 22 are both located outside the channel 1, and the rotating shaft 23 is rotatably connected to the inside of the shell 10.

[0038] Working principle:

[0039] Install pipes at both ends of channel one respectively. When the liquid flows normally, the valve cover 12 is in the conducting state and the regulating valve is in the forward direction. When the valve cover 12 needs to be closed, the valve cover 12 is rotated to drive the regulating valves on the left and right sides of channel one to rotate synchronously through the driving component 20. When the valve cover 12 is closed, the regulating valves are in the reverse state, which greatly reduces the flow rate of the liquid. At this time, the liquid will flow into the pipeline one and lift the arc plate one 42, and the subsequent liquid will pass through the side of the arc plate two 43 with smaller resistance. The subsequent liquid flow passes through the arc surface of the inner arc wall of the hemispherical buffer valve 11 and converges to the top of the arc plate one 42, and then passes through the conical stopper 45 to guide the fall to release energy to the arc plate one 42 to offset the upward movement of the arc plate one 42, absorb the energy accumulated by the liquid flow, greatly reduce the harm of the liquid flow to the pipeline and valve, and extend the service life of the device.

Claims

1. A hydraulic energy dissipation structure, comprising a shell (10) and a channel 1 that runs through the shell (10) in a longitudinal and horizontal manner, a valve cover (12) is provided in the middle of one end of the top of the shell (10), a rotating shaft 1 (14) is fixedly connected to the bottom of the valve cover (12), the bottom of the rotating shaft 1 (14) passes through the top of the outer arc wall of the channel 1, four regulating valves are arranged at equal intervals and staggered on both sides of the channel 1 on the side of the shell (10) away from the valve cover (12), the four regulating valves are fixedly connected to the side wall away from the channel 1, and the regulating valves on the same side are arranged on the side wall away from the channel 1 with the same drive assembly (20), characterized in that: The driving assembly (20) comprises a bevel gear 1 (21) fixedly connected to the bottom end of the rotating shaft 1 (14); both sides of the bevel gear 1 (21) away from the channel 1 are meshedly connected with bevel gear 2 (22); a rotating shaft 2 (23) is fixedly connected to a side wall of the bevel gear 2 (22) away from the bevel gear 1 (21); a sprocket 1 (24) is fixedly connected to a side wall of the rotating shaft 2 (23) away from the bevel gear 2 (22); a rotating shaft 3 of one of the two regulating valves closer to the sprocket 1 (24) is provided with a sprocket 1 (24) of the same structure on a side wall away from the channel 1; the outer sides of the two sprockets 1 (24) are meshedly connected with a same chain (25); a rotating disk (26) is fixedly connected to a side wall of the rotating shaft 3 away from the regulating valve; and the two rotating disks (26) located on the same side are rotatably connected to a same transmission rod (27) on a side wall away from the regulating valve.

2. A hydraulic energy dissipation structure according to claim 1, characterized in that: A hemispherical buffer valve (11) is provided on one side of the valve cover (12) close to the regulating valve. A pipe 1 is fixedly connected to the bottom of the hemispherical buffer valve (11). The bottom of the pipe 1 passes through the top of the housing (10) and communicates with the channel 1. A buffer assembly (40) is provided inside the hemispherical buffer valve (11). The buffer assembly (40) comprises a cross fixing frame (41) fixedly connected to the bottom of the inner wall of the hemispherical buffer valve (11). A slide bar (44) is fixedly connected at the inner center of the cross fixing frame (41). The top of the slide bar (44) is fixedly connected to the center of the inner arc wall of the top of the hemispherical buffer valve (11). A horizontal arc plate 1 (42) is slidably connected to the bottom end of the outer arc wall of the slide bar (44). Both ends of the bottom of the arc plate 1 (42) are fixedly connected to an arc plate 2 (43). A conical stopper (45) is fixedly connected to the top end of the outer arc wall of the slide bar (44). The conical surface of the conical stopper (45) is arranged toward the arc plate 1 (42).

3. A hydraulic energy dissipation structure according to claim 2, characterized in that: The upper middle portion of the hemispherical buffer valve (11) is hemispherical, the lower middle portion of the hemispherical buffer valve (11) is inverted truncated cone shape, the bottom edge of the arc plate 1 (42) abuts against the inner arc wall of the lower middle portion of the hemispherical buffer valve (11), the outer arc walls of the two arc plates 2 (43) both fit with the inner arc wall of the hemispherical buffer valve (11), and a side wall of the conical stopper (45) away from the arc plate 1 (42) abuts against the inner arc wall of the hemispherical buffer valve (11).

4. A hydraulic energy dissipation structure according to claim 3, characterized in that: The regulating valves on both sides of the channel 1 inside the housing (10) are horizontally placed cylinders, including a lower flow limiting valve (30) and an upper flow limiting valve (31) detachably connected to the top of the lower flow limiting valve (30). A C-shaped slide groove 1 is provided on a side of the wall where the lower flow limiting valve (30) and the upper flow limiting valve (31) are close to each other and close to the channel 1. The opening of the slide groove 1 is arranged toward the channel 1. When the lower flow limiting valve (30) and the upper flow limiting valve (31) are connected, the two slide grooves 1 are combined into a C-shaped channel 2. The through holes at both ends of the channel 2 are connected to the channel 1.

5. A hydraulic energy dissipation structure according to claim 4, characterized in that: A sealing gasket is provided at the joint of the lower flow limiting valve (30) and the upper flow limiting valve (31), and a sealing gasket is provided at the edge of a side wall of the lower flow limiting valve (30) and the upper flow limiting valve (31) close to channel one.

6. A hydraulic energy dissipation structure according to claim 1, characterized in that: A second vertically penetrating slide groove is provided on the side of the top of the valve cover (12) away from the regulating valve, and a latch (13) is slidably connected in the second slide groove. A plurality of sockets distributed in a ring array are provided on the top of the housing (10) and located outside the first rotating shaft (14), and the latch (13) fits in the sockets.

7. A hydraulic energy dissipation structure according to claim 1, characterized in that: A second slide groove of a matching shape is provided inside the housing (10) at a position corresponding to the regulating valve, the lower flow limiting valve (30) and the upper flow limiting valve (31) are both rotatably connected in the second slide groove, and a storage groove is provided inside the housing (10) at a position corresponding to the driving assembly (20).

8. A hydraulic energy dissipation structure according to claim 7, characterized in that: A rotation groove is provided inside the housing (10) corresponding to the outer side of the first rotating shaft (14); the first bevel gear (21) and the second bevel gear (22) are both located in the rotation groove; one end of the second rotating shaft (23) close to the second bevel gear (22) is located in the rotation groove, and the other end is located in the storage groove.

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