Anti-seismic and flow-guiding storage tank pump tower structure

Abstract

The invention relates to an anti-seismic flow-guiding storage tank pump tower structure, and relates to the technical field of storage tank pump towers, the anti-seismic flow-guiding storage tank pump tower structure comprises a liquid inlet pipe arranged on a mounting frame and two groups of pump liquid pipes which are connected through a plurality of groups of connecting pieces to form a stable triangular structure; a plurality of groups of anti-seismic flow guide pipes on the side wall of the liquid inlet pipe or the pump liquid pipe change the hydrodynamic direction from transverse impact to annular flow, flow guide assemblies are arranged on the anti-seismic flow guide pipes, and each flow guide assembly comprises a connecting pipe connected with the tail end of the corresponding anti-seismic flow guide pipe and a buffer block arranged in the connecting pipe in a sliding mode; the reset piece is arranged on the side, away from the anti-seismic flow guide pipe, of the connecting pipe and used for pushing the buffer block to reset. According to the device, the hydrodynamic direction is changed from transverse impact to annular flow through the anti-seismic flow guide pipe, so that the impact acting force of liquid subjected to transverse impact on the anti-seismic flow guide pipe is reduced, the damage probability of the liquid to the side wall of the liquid inlet pipe or the pump liquid pipe is reduced through active response of the buffer block and the reset piece, and finally liquid impact energy is efficiently dispersed.

Description

Technical Field

[0001] This application relates to the technical field of storage tank pump towers, and in particular to a seismic diversion storage tank pump tower structure. Background Art

[0002] In the field of liquid cargo storage, the safety of storage tanks has become a major issue due to frequent vibrations. Since the failure of these storage tanks will not only cause significant economic losses, but also the dangerous liquids such as toxic chemicals in the storage tanks may spill and spread in the surrounding areas, thereby causing pollution and damage to the environment or soil safety, and may even lead to fires and cause inestimable catastrophic consequences. Especially in the design and operation of marine hulls, the safety and stability of the liquid cargo storage system have always been one of the core challenges in the field of engineering technology. Marine hulls are long-term exposed to complex marine environments, including factors such as wave impacts, storm disturbances, tidal changes, and salt spray corrosion. These dynamic loads have a significant mechanical impact on the hull structure and the liquid stored inside. Especially when the hull encounters extreme sea conditions, the violent sloshing of the liquid in the storage tank will cause fatigue and damage to the tank structure, and even cause leakage and pollution.

[0003] In the prior art, the liquid cargo storage systems of marine hulls mostly adopt passive fixed structures. For example, by strengthening the wall thickness of the tank, adding transverse supports or damping partitions, etc. to relieve the liquid impact. However, these traditional designs are based on static or low dynamic load assumptions and are difficult to cope with high-frequency and high-intensity wave impacts; at the same time, the passive fixed structure only relies on the material strength to absorb the impact, resulting in stress concentration prone to occur in the energy concentration area.

[0004] Therefore, there is an urgent need to design a storage tank pump tower that can actively adapt to high-frequency vibrations and efficiently disperse the liquid impact energy. Summary of the Invention

[0005] In order to efficiently disperse the liquid impact energy, this application provides a seismic diversion storage tank pump tower structure.

[0006] A seismic diversion storage tank pump tower structure provided by this application adopts the following technical solutions:

[0007] A seismic diversion storage tank pump tower structure includes a mounting frame. Two groups of pump liquid pipes are spaced on the mounting frame. A liquid inlet pipe parallel to the pump liquid pipes is arranged on the mounting frame. The liquid inlet pipe and the two groups of pump liquid pipes are connected to each other by multiple groups of connectors and form a triangular structure. Multiple groups of seismic diversion pipes are spaced along the axial direction on the side wall of the liquid inlet pipe or the pump liquid pipe. The seismic diversion pipes are used to change the hydrodynamic direction of part of the water impacting the side wall of the liquid inlet pipe from a transverse impact to a circumferential flow. A diversion assembly for diversion and shock absorption is arranged on the seismic diversion pipe. The diversion assembly includes:

[0008] A connecting pipe, which is connected to the end of the anti-seismic diversion pipe:

[0009] A buffer block, which is slidably arranged in the connecting pipe;

[0010] A reset member, which is arranged on the side of the connecting pipe away from the anti-seismic diversion pipe and is used to push the buffer block to reset. The buffer block compresses the reset member under the extrusion of the liquid in the anti-seismic diversion pipe, and the reset member pushes the buffer block to reset when the liquid extrusion force is small.

[0011] By adopting the above technical solutions, multiple groups of connecting members connect the liquid inlet pipe and two groups of liquid pumping pipes into a triangular structure, improving the overall stability. The impact force on the side wall of the liquid inlet pipe or the liquid pumping pipe is dispersed into multiple groups of anti-seismic diversion pipes. The anti-seismic diversion pipe changes the water flow direction from transverse impact to circumferential flow, thereby reducing the impact force of the transversely impacting liquid on the anti-seismic diversion pipe. Through the active response of the buffer block and the reset member, part of the impact kinetic energy is converted into elastic potential energy and heat energy. By reducing the impact destructive force multiple times, the probability of the liquid damaging the side wall of the liquid inlet pipe or the liquid pumping pipe is reduced, and finally the liquid impact energy is efficiently dispersed.

[0012] Furthermore, the side of the anti-seismic diversion pipe away from the liquid inlet pipe or the liquid pumping pipe is of an annular structure, and the water flow direction in the anti-seismic diversion pipe is diverted from transverse impact to circumferential flow, thereby reducing the impact on the anti-seismic diversion pipe.

[0013] By adopting the above technical solutions, the liquid entering the anti-seismic diversion pipe is diverted from transverse impact to circumferential flow. The annular structure of the anti-seismic diversion pipe increases the friction length between the fluid and the pipe wall, resulting in the conversion of kinetic energy into heat energy loss through turbulence and viscous resistance, thereby reducing the impact force of the transversely impacting liquid on the anti-seismic diversion pipe.

[0014] Furthermore, a plurality of spiral grooves are provided on the inner side wall of the anti-seismic diversion pipe near one end of the liquid inlet pipe or the liquid pumping pipe. The depth of the plurality of spiral grooves near one end of the liquid inlet pipe or the liquid pumping pipe is greater than the depth of the end away from the liquid inlet pipe or the liquid pumping pipe. The spiral grooves are used to guide the liquid flowing through the anti-seismic diversion pipe to flow spirally.

[0015] By adopting the above technical solutions, when the water flow flows from the liquid inlet pipe or the liquid pumping pipe into the anti-seismic diversion pipe, as the depth of the spiral groove gradually decreases, the rotation of the water flow is inhibited, so that the liquid enters the annular structure smoothly, avoiding additional pressure drop; when the liquid in the anti-seismic diversion pipe flows back, as the depth of the spiral groove gradually increases, finally the liquid flows back into the liquid inlet pipe or the liquid pumping pipe in a swirling manner, thereby disrupting the vibrating and shaking flow field, destroying the standing wave or oscillation structure, and significantly reducing the water hammer risk and pipeline vibration.

[0016] Further, the reset member includes a damper and a compression spring. The fixed end of the damper is arranged on the connecting pipe, and the movable end is connected to the buffer block. The compression spring is sleeved on the damper, and both ends thereof are respectively abutted against the connecting pipe and the buffer block.

[0017] By adopting the above technical solution, when the liquid impacts the buffer block and pushes the buffer block to slide, the buffer block compresses the compression spring, thereby converting the impact energy into the elastic potential energy of the compression spring and storing it. The damper consumes the impact energy and delays the reset speed, and at the same time delays and slowly releases the energy, reducing the rebound shock, and finally efficiently dispersing the liquid impact energy.

[0018] Further, an adjusting assembly for adjusting the initial pressure value of the compression spring is arranged on the connecting pipe. The adjusting assembly includes:

[0019] A sliding ring which is slidably arranged on the connecting pipe, and one end of the compression spring away from the buffer block abuts against the sliding ring;

[0020] An adjusting bolt which is threadedly arranged on the connecting pipe and rotatably connected to the sliding ring, and the adjusting bolt is used to adjust the distance value between the sliding ring and the buffer block at the initial position.

[0021] By adopting the above technical solution, rotate the adjusting bolt and change the position of the sliding ring to adjust the initial pressure value of the compression spring, so as to be adapted to the vibration levels at different positions. At the same time, determining the initial pressure value of the compression spring determines the starting threshold of the buffer block, preventing false triggering by small disturbances.

[0022] Further, a limiting ring for limiting the maximum displacement of the buffer block sliding towards the direction close to the sliding ring is arranged on the connecting pipe. A plurality of groups of overflow holes are opened on the side wall of the connecting pipe far away from the anti-seismic diversion pipe. The plurality of groups of overflow holes are internally communicated with the inlet pipe or the pump liquid pipe through a reflux assembly and are used for flowing the redundant liquid back into the inlet pipe or the pump liquid pipe. When the buffer block abuts against the limiting ring, the plurality of groups of overflow holes are internally communicated with the anti-seismic diversion pipe.

[0023] By adopting the above technical solution, when the impact force of the incoming liquid is too large, the liquid pushes the buffer block to abut against the limiting ring, and the redundant liquid is discharged into the reflux assembly through the overflow holes. Finally, the liquid after the impact force is initially reduced through the anti-seismic diversion pipe is quickly discharged back into the inlet pipe or the pump liquid pipe, reducing the probability of damage to the reset member.

[0024] Further, the reflux assembly includes:

[0025] A reflux pipe which is arranged on the inlet pipe or the pump liquid pipe and is internally communicated with the plurality of groups of overflow holes;

[0026] One-way valve, the one-way valve is arranged on the reflux pipe, and the one-way valve only allows the liquid in the reflux pipe to flow from the overflow hole into the liquid inlet pipe or the liquid pumping pipe.

[0027] By adopting the above technical solution, the reflux pipe is used to collect the liquid in multiple overflow holes and then discharge it back into the liquid inlet pipe or the liquid pumping pipe, and the one-way valve ensures that the overflow liquid is injected into the liquid inlet pipe or the liquid pumping pipe unidirectionally.

[0028] Furthermore, a tapered section is arranged on the side of the reflux pipe close to the overflow hole. The diameter of the tapered section gradually decreases along the axial direction, and the diameter on the side close to the liquid inlet pipe and the liquid pumping pipe is smaller than the diameter on the side close to the overflow hole. A contraction nozzle is arranged on the side of the tapered section close to the one-way valve, and the contraction nozzle is aligned with the center of the valve core of the one-way valve.

[0029] By adopting the above technical solution, the tapered section increases the flow rate and impact force of the reflux liquid. At the same time, the contraction nozzle further increases the flow rate and impact force of the reflux liquid, which is convenient for ensuring the normal opening of the one-way valve.

[0030] Furthermore, a swirl buffer chamber is arranged at the interface between the reflux pipe and the liquid inlet pipe or the liquid pumping pipe. A plurality of groups of guide protrusions are spirally arranged on the inner wall of the swirl buffer chamber, and a honeycomb ceramic rectifier is arranged at one end of the swirl buffer chamber close to the liquid inlet pipe or the liquid pumping pipe.

[0031] By adopting the above technical solution, the swirl buffer chamber reduces the liquid flow velocity by increasing the diameter. At the same time, the plurality of groups of guide protrusions make the liquid entering the swirl buffer chamber rotate, thereby reducing the liquid impact shock; the honeycomb ceramic rectifier breaks large-scale vortices, thereby reducing the vortex scale of the liquid flowing back into the liquid inlet pipe or the liquid pumping pipe.

[0032] Furthermore, the contact surface between the swirl buffer chamber and the liquid inlet pipe or the liquid pumping pipe and the contact surface between the anti-seismic diversion pipe and the liquid inlet pipe and the liquid pumping pipe are perpendicular to each other, and the included angle between the axial direction of the swirl buffer chamber and the axial direction of the liquid inlet pipe or the liquid pumping pipe is between 30° and 60°.

[0033] By adopting the above technical solution, the 30°-60° included angle decomposes the reflux velocity into an axial component and a tangential component, and the tangential component is perpendicular to the transverse flow direction entering the anti-seismic diversion pipe, thereby interfering with the liquid vibration in the liquid inlet pipe or the liquid pumping pipe, achieving a disrupted vibrating and swaying flow field, and significantly reducing the water hammer risk and pipeline vibration.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] 1. The liquid inlet pipe and two groups of liquid pumping pipes are interconnected by multiple groups of connecting pieces to form a triangular structure, thereby improving the overall stability. The seismic diversion pipe changes the water flow direction from lateral impact to circumferential flow. The circumferential structure of the seismic diversion pipe increases the friction length between the fluid and the pipe wall, resulting in the conversion of kinetic energy into heat energy loss through turbulence and viscous resistance, thereby reducing the impact force of the laterally impacting liquid on the seismic diversion pipe. At the same time, the liquid pushes the buffer block to compress the compression spring and activate the damper. The damper consumes the impact energy and delays the reset speed. By reducing the impact destructive force multiple times, the probability of damage to the side wall of the liquid inlet pipe or the liquid pumping pipe by the liquid is reduced, and finally the liquid impact energy is efficiently dispersed.

[0036] 2. When the compression spring pushes the buffer block to reset, it pushes the liquid in the circulation section to flow back into the direct current section. The liquid enters the deeper spiral groove from the shallower spiral groove, causing the reflux liquid to form a swirl in the direct current section and finally flowing back into the liquid inlet pipe or the liquid pumping pipe in the form of a swirl, thereby disrupting the vibrating and shaking flow field, destroying the standing wave or oscillation structure, and significantly reducing the water hammer risk and pipeline vibration.

[0037] 3. The overflow liquid is refluxed into the liquid inlet pipe or the liquid pumping pipe through the reflux pipe. At the same time, the inclined swirl buffer chamber enables the reflux liquid to enter the liquid inlet pipe or the liquid pumping pipe in a direction with a certain angle to the vibration direction in the liquid inlet pipe or the liquid pumping pipe, thereby achieving the disruption of the vibrating and shaking flow field and significantly reducing the water hammer risk and pipeline vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic structural diagram of the seismic diversion storage tank tower structure of Embodiment 1 of the present application;

[0039] Figure 2 is a schematic structural diagram of the seismic diversion pipe and the diversion assembly of Embodiment 1 of the present application;

[0040] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0041] Figure 4 is a schematic structural diagram of the seismic diversion pipe and the diversion assembly of Embodiment 2 of the present application, in which a partial cross-section of the direct current section of the seismic diversion pipe is shown;

[0042] Figure 5 is a schematic structural diagram of the seismic diversion storage tank tower structure of Embodiment 3 of the present application;

[0043] Figure 6 is a schematic structural diagram of the reflux assembly of Embodiment 3 of the present application;

[0044] Figure 7 is Figure 6 an enlarged schematic diagram of part B in

[0045] Reference numerals: 1, liquid inlet pipe; 11, liquid pumping pipe; 12, connecting member; 2, anti-seismic diversion pipe; 21, straight section; 211, spiral groove; 22, circulation section; 3, diversion assembly; 31, connecting pipe; 32, buffer block; 33, reset member; 331, compression spring; 332, damper; 34, limiting ring; 4, adjustment assembly; 41, sliding ring; 42, adjustment bolt; 5, return assembly; 51, return pipe; 511, tapered section; 52, check valve; 6, contraction nozzle; 7, swirl buffer chamber. Detailed implementation manners

[0046] The following further elaborates on this application Figures 1-7 in conjunction with the attached drawings.

[0047] The embodiment of this application discloses a storage tank pump tower structure for anti-seismic diversion.

[0048] Embodiment 1

[0049] Referring to Figure 1 , a storage tank pump tower structure for anti-seismic diversion includes a mounting frame. Two groups of liquid pumping pipes 11 are arranged at intervals on the mounting frame. A liquid inlet pipe 1 parallel to the liquid pumping pipes 11 is arranged on the mounting frame. The liquid inlet pipe 1 and the two groups of liquid pumping pipes 11 are connected to each other through multiple groups of connecting members 12 and form a triangular structure. Multiple groups of anti-seismic diversion pipes 2 are arranged at intervals along the axial direction on the side wall of the liquid inlet pipe 1 or the liquid pumping pipe 11. The anti-seismic diversion pipes 2 are used to change the hydrodynamic direction of part of the water hitting the side wall of the liquid inlet pipe 1 from transverse impact to circumferential flow. A diversion assembly 3 for diversion and shock absorption is arranged on the anti-seismic diversion pipe 2.

[0050] Referring to Figure 1 , anti-seismic diversion pipes 2 are arranged on the side walls of both the liquid inlet pipe 1 and the liquid pumping pipe 11. The anti-seismic diversion pipes 2 are fixedly installed on the connecting members 12, and the connecting members 12 support and fix the bottom of the anti-seismic diversion pipes 2. Multiple groups of anti-seismic diversion pipes 2 on the same liquid inlet pipe 1 or liquid pumping pipe 11 are all located on the same side.

[0051] Referring to Figure 2, the earthquake-resistant diversion pipe 2 includes a direct current section 21 and a circulation section 22. The direct current section 21 is fixedly connected to the liquid inlet pipe 1 or the liquid pumping pipe 11 to divert the liquid that laterally impacts the pipe wall in the liquid inlet pipe 1 or the liquid pumping pipe 11, ultimately reducing the lateral impact force of the liquid on the side wall of the liquid inlet pipe 1 or the liquid pumping pipe 11; the circulation section 22 is fixedly connected to one end of the direct current section 21 away from the liquid inlet pipe 1 or the liquid pumping pipe 11. The circulation section 22 is in an annular structure and is used to divert the liquid that laterally impacts in the direct current section 21 into annular flow, increasing the friction length between the fluid and the pipe wall through a spiral path, causing the kinetic energy to be converted into heat energy loss through turbulence and viscous resistance, thereby reducing the impact force of the laterally impacting liquid on the earthquake-resistant diversion pipe 2; the circulation section 22 of this embodiment is composed of a spirally coiled pipe. The inner diameter of the pipe of the circulation section 22 remains unchanged, and the curvature radius of the spiral gradually decreases upwards. At the same time, as the curvature radius gradually decreases, the wall thickness of the circulation pipe gradually increases.

[0052] Refer to Figure 2 and Figure 3 , the diversion assembly 3 includes a connecting pipe 31, a buffer block 32, and a reset member 33. The connecting pipe 31 is connected to the tail of the circulation section 22. The connecting pipe 31 coincides with the center line of the circulation section 22, and the inside of the connecting pipe 31 is sealed; the buffer block 32 is slidably installed in the connecting pipe 31. When the buffer block 32 slides in the connecting pipe 31, the communication volume between the connecting pipe 31 and the circulation section 22 is changed, facilitating the flow of liquid in the earthquake-resistant diversion pipe 2; the reset member 33 is arranged on the side of the connecting pipe 31 away from the earthquake-resistant diversion pipe 2. The reset member 33 is used to push the buffer block 32 to reset. The buffer block 32 compresses the reset member 33 under the extrusion of the liquid in the earthquake-resistant diversion pipe 2, and the reset member 33 pushes the buffer block 32 to reset when the liquid extrusion force is small.

[0053] Refer to Figure 3 , the reset member 33 includes a damper 332 and a compression spring 331. The fixed end of the damper 332 is fixedly installed on the connecting pipe 31, and the movable end of the damper 332 is fixedly connected to the buffer block 32. The damper 332 is used to buffer the sliding of the buffer block 32; the compression spring 331 is sleeved on the damper 332, and both ends of the compression spring 331 are respectively abutted against the connecting pipe 31 and the buffer block 32; when the impact force of the liquid in the earthquake-resistant diversion pipe 2 on the buffer block 32 is greater than the elastic force of the compression spring 331, the liquid pushes the buffer block 32 to slide towards the top of the connecting pipe 31, thereby compressing the compression spring 331. The damper 332 reduces the sliding speed of the buffer block 32 and consumes part of the liquid impact energy at the same time; when the impact force of the liquid on the buffer block 32 is less than the elastic force of the compression spring 331, the compression spring 331 pushes the buffer block 32 to reset, and at the same time, the damper 332 delays the release speed of the compression spring 331 to avoid secondary impact caused by the rapid rebound of the buffer block 32.

[0054] Refer toFigure 3 , an adjusting assembly 4 for adjusting the initial pressure value of the compression spring 331 is arranged on the connecting pipe 31. The adjusting assembly 4 includes a sliding ring 41 and an adjusting bolt 42. The sliding ring 41 is slidably mounted on the connecting pipe 31, and one end of the compression spring 331 away from the buffer block 32 abuts against the sliding ring 41; the adjusting bolt 42 is threadedly mounted on the connecting pipe 31, one end of the adjusting bolt 42 is rotatably connected to the sliding ring 41, and the adjusting bolt 42 is used to adjust the distance value between the sliding ring 41 and the buffer block 32 at the initial position, so as to facilitate adjusting the initial pressure value of the compression spring 331.

[0055] The working principle of Embodiment 1 of this application is as follows:

[0056] Through multiple groups of connecting pieces 12, the liquid inlet pipe 1 and two groups of liquid pumping pipes 11 are connected to form a triangular structure with each other, so as to improve the overall stability. When the liquid in the liquid inlet pipe 1 and the liquid pumping pipes 11 vibrates due to vibration, the liquid sways with the vibration, so that the liquid impacts the liquid inlet pipe 1 or the liquid pumping pipes 11 laterally. The direct current section 21 of the anti-seismic diversion pipe 2 guides the impact water flow to the circulation section 22, and changes the lateral impact into circumferential flow in the water movement direction by means of spiral winding. The friction length between the fluid and the pipe wall is increased through the spiral path, resulting in the conversion of kinetic energy into heat energy loss through turbulence and viscous resistance, so as to reduce the impact force of the laterally impacting liquid on the anti-seismic diversion pipe 2. At the same time, the liquid pushes the buffer block 32 to compress the compression spring 331 and activate the damper 332. The damper 332 consumes the impact energy and delays the reset speed. By reducing the impact destructive force multiple times, the probability of damage to the side wall of the liquid inlet pipe 1 or the liquid pumping pipes 11 by the liquid is reduced, and finally the liquid impact energy is efficiently dispersed.

[0057] Embodiment 2

[0058] Refer to Figure 4, the difference between this embodiment and Embodiment 1 is that multiple groups of spiral grooves 211 are provided on the inner side wall of the DC section 21, and the depth of the multiple groups of spiral grooves 211 on the side closer to the liquid inlet pipe 1 or the liquid pumping pipe 11 is greater than the depth on the side closer to the circulation section 22. As it gets closer to the circulation section 22, the depth of the spiral grooves 211 becomes shallower until the spiral grooves 211 completely disappear at the contact with the circulation section 22. In this way, when the water flow flows into the DC section 21 from the liquid inlet pipe 1 or the liquid pumping pipe 11, as the depth of the spiral grooves 211 gradually decreases, the rotation of the water flow is inhibited, so that the liquid enters the circulation section 22 smoothly, avoiding additional pressure drop. The circulation section 22 performs preliminary energy consumption through a spiral path with a decreasing radius of curvature, and at the same time, the compression spring 331, the damper 332 and the buffer block 32 cooperate with each other to achieve secondary energy consumption. When the compression spring 331 pushes the buffer block 32 to reset, it pushes the liquid in the circulation section 22 to flow back into the DC section 21. By the liquid entering the shallower spiral grooves 211 from the deeper spiral grooves 211, a swirling flow is formed in the DC section 21 for the reflux liquid, and finally it flows back into the liquid inlet pipe 1 or the liquid pumping pipe 11 in the form of a swirling flow, thereby disturbing the vibrating and shaking flow field, destroying the standing wave or oscillation structure, and significantly reducing the water hammer risk and pipeline vibration.

[0059] Embodiment 3

[0060] Refer to Figure 5 , Figure 6 and Figure 7 , the difference between this embodiment and Embodiment 1 is that a limit ring 34 for restricting the maximum displacement of the buffer block 32 sliding towards the sliding ring 41 is fixedly installed on the connecting pipe 31. When the buffer block 32 slides towards the sliding ring 41, the compression spring 331 is compressed. Finally, after the buffer block 32 abuts against the limit ring 34, the limit ring 34 prevents the buffer block 32 from continuing to slide. Multiple groups of overflow holes are provided on the side wall of the connecting pipe 31 away from one end of the anti-seismic diversion pipe 2. The multiple groups of overflow holes are internally connected to the liquid inlet pipe 1 or the liquid pumping pipe 11 through a reflux assembly 5, so as to facilitate the flow of the excess liquid back into the liquid inlet pipe 1 or the liquid pumping pipe 11. When the buffer block 32 abuts against the limit ring 34, the multiple groups of overflow holes are internally connected to the anti-seismic diversion pipe 2. The diameter of the overflow holes in this embodiment is smaller than the thickness of the buffer block 32.

[0061] Refer to Figure 6 and Figure 7, the reflux assembly 5 includes a reflux pipe 51 and a check valve 52. The reflux pipe 51 is arranged on the side wall of the liquid inlet pipe 1 or the liquid pumping pipe 11. The reflux pipe 51 is internally communicated with a plurality of groups of overflow holes. The reflux pipe 51 is used to quickly flow the liquid entering the overflow holes back into the liquid inlet pipe 1 or the liquid pumping pipe 11. The check valve 52 is fixedly installed on the reflux pipe 51. The check valve 52 only allows the liquid in the reflux pipe 51 to flow from the overflow holes into the liquid inlet pipe 1 or the liquid pumping pipe 11. Specifically, when the impact force of the liquid in the liquid inlet pipe 1 or the liquid pumping pipe 11 is relatively large, after the liquid pushes the buffer block 32 to abut against the limit ring 34, the impact force of the liquid is still greater than the elastic force of the compression spring 331. The excess liquid flows into the reflux pipe 51 through the overflow holes, and then the check valve 52 is opened, so as to make the excess liquid in the reflux pipe 51 flow back into the liquid inlet pipe 1 or the liquid pumping pipe 11.

[0062] Refer to Figure 6 , a tapered section 511 is arranged on the side of the reflux pipe 51 close to the overflow holes. The diameter of the tapered section 511 gradually decreases along the axial direction, and the diameter on the side close to the liquid inlet pipe 1 and the liquid pumping pipe 11 is smaller than the diameter on the side of the overflow holes. A contraction nozzle 6 is arranged on the side of the tapered section 511 close to the check valve 52. The contraction nozzle 6 is aligned with the center of the valve core of the check valve 52. When the liquid flows into the reflux pipe 51 through the overflow holes, the tapered section 511 makes the flow velocity of the liquid increase, and finally the high-speed liquid ejected through the contraction nozzle 6 opens the check valve 52, so that the liquid in the reflux pipe 51 passes through the check valve 52. The outer diameter of the reflux pipe 51 in this embodiment remains unchanged, and its inner diameter gradually decreases, so as to make the part of the pipe wall with a relatively fast liquid flow velocity thicker.

[0063] Refer to Figure 6 , a swirl buffer chamber 7 is arranged at the interface between the reflux pipe 51 and the liquid inlet pipe 1 or the liquid pumping pipe 11. A plurality of groups of guide protrusions are arranged on the inner wall of the swirl buffer chamber 7, so as to make the liquid entering the swirl buffer chamber 7 rotate, thereby reducing the liquid impact shock. And the diameter of the swirl buffer chamber 7 increases, so as to slow down the liquid flow velocity. At the same time, a honeycomb ceramic rectifier is arranged at one end of the swirl buffer chamber 7 close to the liquid inlet pipe 1 or the liquid pumping pipe 11. The large-scale vortices are broken by the honeycomb ceramic rectifier, thereby reducing the vortex scale of the liquid flowing back into the liquid inlet pipe 1 or the liquid pumping pipe 11.

[0064] Refer to Figure 6 , the contact surface between the swirl buffer chamber 7 and the liquid inlet pipe 1 or the liquid pumping pipe 11 is perpendicular to the contact surface between the anti-seismic diversion pipe 2 and the liquid inlet pipe 1 and the liquid pumping pipe 11. The included angle between the axial direction of the swirl buffer chamber 7 and the axial direction of the liquid inlet pipe 1 or the liquid pumping pipe 11 is between 30° and 60°. In this way, the liquid discharged through the swirl buffer chamber 7 rotates slightly, and has a certain angle with the vibration direction in the liquid inlet pipe 1 or the liquid pumping pipe 11, so as to disrupt the vibrating and shaking flow field, destroy the standing wave or oscillation structure, and significantly reduce the water hammer risk and pipeline vibration.

[0065] The above are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. An anti-seismic and diversion storage tank pump tower structure, characterized in that: It includes a mounting frame, on which two groups of liquid pumping pipes (11) are arranged at intervals. An inlet pipe (1) parallel to the liquid pumping pipes (11) is arranged on the mounting frame. The inlet pipe (1) and the two groups of liquid pumping pipes (11) are interconnected by multiple groups of connectors (12) and form a triangular structure. Multiple groups of anti-seismic diversion pipes (2) are arranged at intervals along the axial direction on the side wall of the inlet pipe (1) or the liquid pumping pipes (11). The anti-seismic diversion pipes (2) are used to change the hydrodynamic direction of part of the water hitting the side wall of the inlet pipe (1) from transverse impact to circumferential flow. A diversion assembly (3) for diversion and shock absorption is arranged on the anti-seismic diversion pipes (2). The diversion assembly (3) includes: A connecting pipe (31) which is connected to the tail end of the anti-seismic diversion pipe (2); A buffer block (32) which is slidably arranged in the connecting pipe (31); A reset member (33) which is arranged on the side of the connecting pipe (31) away from the anti-seismic diversion pipe (2) and is used to push the buffer block (32) to reset. The buffer block (32) compresses the reset member (33) under the extrusion of the liquid in the anti-seismic diversion pipe (2), and the reset member (33) pushes the buffer block (32) to reset when the liquid extrusion force is small.

2. The anti-seismic diversion storage tank pump tower structure according to claim 1, characterized in that: The side of the anti-seismic diversion pipe (2) away from the inlet pipe (1) or the liquid pumping pipes (11) is of an annular structure and diverts the hydrodynamic direction of the water in the anti-seismic diversion pipe (2) from transverse impact to circumferential flow, thereby reducing the impact on the anti-seismic diversion pipe (2).

3. The structure of a storage tank pump tower for earthquake resistance and diversion according to claim 2, characterized in that: Multiple groups of spiral grooves (211) are opened on the inner side wall of the end of the anti-seismic diversion pipe (2) close to the inlet pipe (1) or the liquid pumping pipes (11). The depth of multiple groups of the spiral grooves (211) at the end close to the inlet pipe (1) or the liquid pumping pipes (11) is greater than the depth at the end away from the inlet pipe (1) or the liquid pumping pipes (11). The spiral grooves (211) are used to guide the liquid flowing through the anti-seismic diversion pipe (2) to flow spirally.

4. A seismic-resistant and flow-guiding storage tank pump tower structure according to claim 1, characterized in that: The reset member (33) includes a damper (332) and a compression spring (331). The fixed end of the damper (332) is arranged on the connecting pipe (31) and the movable end is connected to the buffer block (32). The compression spring (331) is sleeved on the damper (332) and its two ends are respectively abutted against the connecting pipe (31) and the buffer block (32).

5. The anti-seismic diversion storage tank pump tower structure according to claim 4, characterized in that: An adjusting assembly (4) for adjusting the initial pressure value of the compression spring (331) is arranged on the connecting pipe (31). The adjusting assembly (4) includes: A sliding ring (41) which is slidably arranged on the connecting pipe (31). One end of the compression spring (331) away from the buffer block (32) abuts against the sliding ring (41); An adjusting bolt (42) which is threadedly arranged on the connecting pipe (31) and is rotatably connected to the sliding ring (41). The adjusting bolt (42) is used to adjust the distance value between the sliding ring (41) and the buffer block (32) at the initial position.

6. The anti-seismic diversion storage tank pump tower structure according to claim 5, characterized in that: A limiting ring (34) for restricting the maximum displacement of the buffer block (32) sliding towards the sliding ring (41) is provided on the connecting pipe (31). A plurality of overflow holes are formed in the side wall of the end of the connecting pipe (31) far from the earthquake-resistant diversion pipe (2). The plurality of overflow holes are internally communicated with the liquid inlet pipe (1) or the liquid pumping pipe (11) through a reflux assembly (5) and are used for flowing the redundant liquid back into the liquid inlet pipe (1) or the liquid pumping pipe (11). When the buffer block (32) abuts against the limiting ring (34), the plurality of overflow holes are internally communicated with the earthquake-resistant diversion pipe (2).

7. A storage tank pump tower structure for earthquake-resistant diversion according to claim 6, characterized in that: The reflux assembly (5) includes: A reflux pipe (51) which is arranged on the liquid inlet pipe (1) or the liquid pumping pipe (11) and is internally communicated with the plurality of overflow holes; A one-way valve (52) which is arranged on the reflux pipe (51), and the one-way valve (52) only allows the liquid in the reflux pipe (51) to flow from the overflow holes into the liquid inlet pipe (1) or the liquid pumping pipe (11).

8. The structure of a storage tank pump tower with earthquake resistance and flow diversion according to claim 7, characterized in that: A tapered section (511) is arranged on the side of the reflux pipe (51) close to the overflow holes. The diameter of the tapered section (511) gradually decreases along the axial direction, and the diameter of the side close to the liquid inlet pipe (1) and the liquid pumping pipe (11) is smaller than the diameter of the side close to the overflow holes. A contraction nozzle (6) is arranged on the side of the tapered section (511) close to the one-way valve (52), and the contraction nozzle (6) is aligned with the center of the valve core of the one-way valve (52).

9. The anti-seismic and diversion storage tank pump tower structure according to claim 8, characterized in that: A swirl buffer chamber (7) is arranged at the interface between the reflux pipe (51) and the liquid inlet pipe (1) or the liquid pumping pipe (11). A plurality of guide protrusions are spirally arranged on the inner wall of the swirl buffer chamber (7). A honeycomb ceramic rectifier is arranged at one end of the swirl buffer chamber (7) close to the liquid inlet pipe (1) or the liquid pumping pipe (11).

10. The structure of a storage tank pump tower for earthquake resistance and diversion according to claim 9, characterized in that: The contact surface between the swirl buffer chamber (7) and the liquid inlet pipe (1) or the liquid pumping pipe (11) is perpendicular to the contact surface between the earthquake-resistant diversion pipe (2) and the liquid inlet pipe (1) and the liquid pumping pipe (11). The included angle between the axial direction of the swirl buffer chamber (7) and the axial direction of the liquid inlet pipe (1) or the liquid pumping pipe (11) is between 30° and 60°.

Images