CN113202827A - Modularized barrier lake emergency drainage siphon diving rectifying device - Google Patents
Modularized barrier lake emergency drainage siphon diving rectifying device Download PDFInfo
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- CN113202827A CN113202827A CN202110402699.4A CN202110402699A CN113202827A CN 113202827 A CN113202827 A CN 113202827A CN 202110402699 A CN202110402699 A CN 202110402699A CN 113202827 A CN113202827 A CN 113202827A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F10/00—Siphons
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/20—Siphon pipes or inverted siphons
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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Abstract
The invention provides a modular barrier lake emergency drainage siphon diving rectifying device which comprises a modular siphon diving rectifier and modular installation auxiliary equipment, wherein the modular siphon diving rectifier is connected with the modular installation auxiliary equipment; the modularized siphon submersible rectifier comprises a flange, an assembled rectifier outer shell, an assembled base and an inner rectifying element arranged inside the assembled rectifier outer shell, wherein the flange, the assembled rectifier outer shell, the assembled base and the inner rectifying element are sequentially connected; the modularized installation auxiliary equipment comprises an assembled floating island water pressing plate and hoisting equipment, and the modularized siphon submersible rectifier is placed into a barrier lake water body below from a middle hole of the assembled floating island water pressing plate through the hoisting equipment. The invention can form a large-pipe-diameter siphon device with quick laying and low-pressure vacuum strong adsorption, and realize quick drainage of the dammed lake in a complex environment.
Description
Technical Field
The invention relates to the technical field of emergency rescue high-power drainage, in particular to a modular barrier lake emergency drainage siphon diving rectifying device.
Background
The barrier lake is raised continuously at the reservoir water level, the water quantity is accumulated continuously, and the out-of-control burst is easy to occur under the actions of permeation, overtopping, undercutting, scouring and the like. Because the overflowing channel is completely blocked, a large amount of overflowing detention exists, once the overflowing detention is out of control, flood submerging disasters are propagated along with the development of burst openings and the evolution of burst flood, and great threat is caused to downstream. The time available for emergency treatment is extremely limited, and a practical emergency treatment technology needs to be adopted. The techniques generally adopted are: the drainage groove is formed through water pump forced drainage of reservoir water, drainage groove excavation, blasting construction, drainage pipe laying and burying, local reinforcement and dam overflow prevention and the like.
The method is more economical and easy to implement, a plurality of water pumps need to be arranged for pumping and discharging at the same time due to small water passing capacity of the water discharging pipe and large volume of water in the reservoir, and the power is consumed for pumping and discharging the water pumps because the barrier lake is generally located in remote areas or the earthquake disaster road is blocked, and the materials such as the water pumps, the generators, the fuel and the like need to be simultaneously conveyed to the disaster area. The drainage efficiency of the small water pump is about 0.03m3/s～0.05m3The water drainage efficiency of a large water pump is about 0.3m3/s～0.5m3And/s, even if the 24H continuous operation is carried out, the device only plays a role in local peak clipping and water level reduction, and is suitable for the barrier lake with small reservoir capacity. For example: in 2004, the water pump emergency drainage is adopted as the first danger elimination measure in the dammed lake formed by landslide caused by earthquake in the areas crossing over in the Japan New York county, 5 DN1000 drainage pipes are buried in the original river channel by digging a ditch before digging a diversion trench, and after the diversion trench is dug, the drainage hose of the water pump is connected with the buried drainage pipe, and the drainage is drained by the gravity flow of the drainage pipe.
The drainage grooves are excavated or blasted by adopting a physical mechanism, and even the chain danger removal of the step barrier lake needs to be considered, so that the dangerous situations of upstream and downstream are planned, and the larger disasters caused by the superposition of upstream and downstream discharge flows are avoided. The success or failure of the artificial burst needs to be comprehensively calculated and pre-judged, and a correct and scientific decision is made. When dam-break flood advances in a dammed lake, the water level, the flow speed, the flow rate, the water passing section and the like all change along with time, the dam-break flood belongs to open channel unsteady flow, the accuracy of characteristic indexes needs to be accurately controlled, certain risk and uncontrollable property exist in the formulation of a risk elimination scheme, a damming body is formed by natural accumulation of loose soil stones, the development of self breach is related to water level expansion amplitude, water-sand coupling and soil-stone particle size grading under the effects of scouring, erosion, dissolution, collapse and the like, the long-term stability can be rarely maintained, and the risk of breach is gradually increased without emergency treatment.
Compared with the forced reservoir water discharge of a water pump, the high-power siphon discharge can realize large pipe diameter and large flow, can span a weir dam body, does not need high-power consumption during operation, utilizes the gravity effect, and in a pipeline filled with water, the gravity pressure difference generated by the water level difference between the upstream and the downstream is used as power to drive the water in the pipe to flow, and does not need external power to drive a water source to continuously flow from a high position to a low position. The water pump drainage is quantitative drainage, and the flow is limited by parameters such as power, lift and the like of the water pump. The vacuum siphon drainage is dynamic drainage as required, when the upstream water inflow is increased, the water level difference between the upstream water inflow and the downstream water inflow changes, the drainage driving force is increased simultaneously, the flow is improved, and the rapid emergency drainage is facilitated. The large-power siphon discharge utilizes natural force to the maximum extent, is beneficial to the guidance and solves natural disasters in a natural mode.
Compared with an excavation and blasting drainage groove, the high-power siphon drainage mode is a non-excavation drainage mode, the rescue level of a barrier lake can be improved, the problems of low excavation efficiency, poor controllability of a drainage scouring process and the like are solved, the flood peak flow of the dam break easily caused by emergency control is delayed, the rising of the water level in front of the dam can be delayed, multiple pipes can be simultaneously configured, and the flow is ensured to be controllable, adjustable and continuously controllable. In the emergency disposal stage of the barrier lake, the drainage grooves are excavated and blasted, so that stability analysis related parameters such as dam body materials, material structure composition, rock-soil mechanical properties and the like are difficult to obtain in time, a related mathematical model cannot be accurately researched, a large difference exists between the analysis process and the final result, and the uncertainty is very strong. In contrast, the high-power siphon discharge does not need to specifically judge the development process of the burst, can ensure the safe discharge control of the water quantity of the dammed lake under the condition of no excavation, and can avoid causing secondary disasters to downstream due to overlarge flood peak through a flow control means.
The traditional reservoir siphon leads reservoir water to a downstream sealed water pipeline from upstream across a dam, and the large siphon is difficult to operate and control, and has the following defects:
1. the pipe diameter is little, mostly is 300mm below, and the siphon import requires that the rivers are stable, and velocity of flow distributes evenly, and the difference in height can not be greater than 7m between pipe top and the reservoir water surface, and in the low reservoir area of high atmospheric pressure at height above sea, this value still can be littleer. The pipe diameter is small, the flow state is unstable, the crossing height is low, the flow is easy to cut off, and the requirement of the barrier lake on emergency environment cannot be met.
2. The conventional siphon is easy to be damaged due to vacuum, and the air tightness of the pipeline is low, so that water cannot be discharged normally. The conventional siphon pipe is difficult to meet the requirement of inflow water flow, the submerging depth is not enough, air is easy to enter a pipeline from a water inlet and cannot be discharged, and the air is gathered at the top of a hump to destroy vacuum.
3. The inlet has no rectifying device, or the rectifying device is unreasonably designed, large-diameter siphons cannot be formed, or the siphons are unstable and uncontrollable, so that the emergency drainage requirement of the dammed lake cannot be met.
4. The existing fixed siphon rectifying device has large size, high weight and diameter 2-3 times of the diameter of a matched pipe, and cannot meet the traffic and transportation environment of a dammed lake disaster site.
Disclosure of Invention
The invention provides a modularized barrier lake emergency discharge siphon diving rectifying device which can avoid the excavation of dam bodies, overcome the difficulty of engineering technology, break through the limitation of the diameter of the traditional siphon, break through the crossing height of the traditional siphon and greatly improve the discharge flow; the invention is developed from the traditional methods of nonstandard preparation, sectional manufacturing, on-site welding, on-site construction and the like, and aims to form a set of high-power siphon emergency drainage equipment which is suitable for emergency rescue, convenient to transport, quick to construct, unpowered, easy to assemble, light in weight, low in manufacturing cost, stable and efficient to operate, safe and reliable.
A modular barrier lake emergency drainage siphon diving rectifying device comprises a modular siphon diving rectifier and modular installation auxiliary equipment; the modular siphon submersible rectifier comprises a flange, an assembled rectifier outer shell, an assembled base and an inner rectifying element arranged in the assembled rectifier outer shell, wherein the flange, the assembled rectifier outer shell, the assembled base and the inner rectifying element are sequentially connected from top to bottom; the inner rectifying element comprises a plurality of triangular inner flow passage units vertically arranged in the outer shell of the assembled rectifier and Venturi tube inner flow passages formed in the triangular inner flow passage units, and the assembled base is provided with a multi-lateral water inlet and a mechanical flow guide cone positioned in the middle of the assembled base; the modularized installation auxiliary equipment comprises an assembled floating island water pressing plate and hoisting equipment fixed on the assembled floating island water pressing plate, wherein the assembled floating island water pressing plate is provided with a middle hole, and the modularized siphon submersible rectifier is placed into a dammed lake water body below the assembled floating island water pressing plate from the middle hole through the hoisting equipment.
Further, the pin-connected panel base is assembled by a plurality of base subassemblies and is formed, base subassembly includes base frame, water inlet curb plate, conical surface machinery guide plate, is equipped with the trompil on the base frame as the side direction water inlet, and trompil department installs the water inlet and blocks dirty net, the water inlet curb plate is installed respectively to two relative sides of base frame, conical surface machinery guide plate is installed on the base of base frame, and conical surface machinery guide plate among a plurality of base subassemblies is assembled the back and is formed mechanical type water conservancy diversion awl.
Furthermore, a locking block male head and a locking block female head are respectively arranged on two sides of the base frame, a quick-assembly handle is arranged in the middle of the base frame, all the nodes are fastened by bolt locking blocks when the base assembly is assembled, other nodes are quickly assembled by the locking block male heads and the locking block female heads, and finally the quick-assembly handle and the upper portion of the assembled rectifier shell are integrally fixed in the middle of the base frame.
Furthermore, the hoisting equipment comprises a pneumatic hoist bracket, a pneumatic hoist fixed on the pneumatic hoist bracket, and a pneumatic generating device for providing an air source for the pneumatic hoist.
Further, the triangular inner flow passage unit is used for installing a triangular inner flow passage unit block, the triangular inner flow passage unit block comprises a triangular inner flow passage unit block A, a triangular inner flow passage unit block B and a triangular inner flow passage unit block C, an inner flow passage diffusion pipe is arranged in the triangular inner flow passage unit block A, an inner flow passage throat pipe is arranged in the triangular inner flow passage unit block B, an inner flow passage contraction pipe is arranged in the triangular inner flow passage unit block C, and the inner flow passage diffusion pipe, the inner flow passage throat pipe and the inner flow passage contraction pipe are sequentially connected to form the Venturi tube inner flow passage.
Furthermore, a butterfly check valve plate is arranged at the opening of the triangular inner flow passage unit and comprises a valve plate shaft hinged to the side edge of the opening of the triangular inner flow passage unit and a butterfly valve plate connected with the valve plate shaft, and the butterfly valve plate can close or open the opening of the triangular inner flow passage unit along with the rotation of the valve plate shaft.
Furthermore, the upper flange and the assembled lower flange are in butt joint by adopting a step structure, a sealing water-stopping gasket is arranged in the upper flange, and the upper flange and the assembled lower flange are connected by adopting bolts at screw holes after being closed.
Furthermore, the assembled lower flange is formed by assembling a plurality of lower flange components, the assembled rectifier outer shell is formed by assembling a plurality of rectifier outer shell components, and each lower flange component is welded with one rectifier outer shell component.
Further, the both sides of rectifier shell body subassembly are equipped with the public head of latch segment and latch segment respectively, and one of them node adopts bolt latch segment fastening when all rectifier shell body subassemblies are assembled, and other nodes adopt the public head of latch segment and the female head of latch segment to carry out the node fast-assembling, then pin-connected panel rectifier shell body throat adopts the pipe clamp to carry out holistic fixed.
The invention has the following beneficial effects:
1. the invention is difficult to form large-diameter siphons and control the operation, which is difficult to apply a siphoning system to a system pain point and difficulty on a large-scale engineering project, and has the main problems that the surface tension and the viscosity of the liquid cannot be protected;
2. the invention sets up the inner flow path of venturi tube in the unit of the triangular inner flow path, adopt the group jet of venturi tube, intervene manually at the transition position of the fluid of the pipeline at the same time, carry on the control of the effective transition, can reduce the turbulence degree, make the dissolved gas in the hydrone release in advance, reduce the cavitation vibration water hammer risk of the system, reduce the whole head loss of the pipe flow running system greatly, the pressure difference that a large amount of tiny commutating elements produce through contracting and diffusing makes the suction of the top of siphon increase, expand the fluid efficiency, promote the siphon system to form stably, the difficult cavitation of the water guarantees the higher siphon to cross over the height;
3. in conventional siphon systems, a suction vortex may cause flow field disturbances during operation, thereby resulting in a siphon break condition. According to the invention, through the arrangement of the assembled floating island water pressing plate, the inflow flow state can be improved, the flow velocity distribution is uniform, the water flow is smooth and approaches to the suction inlet of the rectifier without vortexes, and the flow field at the water inlet of the rectifier is integrally controlled, so that the problems of severe inflow flow state and efficiency reduction of the traditional siphon are improved;
4. according to the invention, through mechanical transformation of the diversion cone, the mechanical diversion cone is integrated to the water absorption head of the rectifier, so that the problems of easy bottom contact and sediment deposition of the traditional siphon can be improved, the safety is increased, the effect of water inlet diversion control is achieved, the velocity distribution uniformity of a flow field is better, bottom attached vortexes of the water inlet are eliminated, the stability and controllability of the flow field are ensured, the hydraulic performance of equipment is improved, and the efficiency of the rectifier device is obviously improved;
5. on the premise of an equipment modularization idea, the technical problem that a large-pipe-diameter siphon system is difficult to realize light weight and convenient installation is solved by adopting an equipment component and an auxiliary assembly tool which are designed in an industrial concept;
6. the invention can combine the Venturi group jet flow principle with the Bernoulli and siphon principles, and convert the pressure energy into the kinetic energy and the impact energy of the conveyed fluid by combining the adsorption effect of vacuum negative pressure, thereby effectively enhancing the fluid suction capacity of a pipeline system and increasing the flow velocity of the conveyed fluid; the rectification pressurization of the inner flow passage element automatically regulates and controls the pressure difference between the inside and the outside of the pipeline, and is a key factor for realizing continuous controllability after the large-caliber siphon is formed; meanwhile, the flow state of the water inlet is not disturbed through the bundling and thinning effects of the diving rectifying element, the bundling property and the compactness of jet flow are adjusted, and the flow velocity gradient of a flow field and the flow state in the pipeline are greatly improved;
7. the invention solves the problems of difficult formation and operation control of large-diameter siphoning, the flow field control solves the problems of viscosity and tension of protective fluid, the suction force at the top is increased, and the pipe diameter can be almost infinite theoretically.
Drawings
FIG. 1 is a front view of one embodiment of a modular dammed lake emergency run-off siphon diving fairing of the present invention;
FIG. 2 is a schematic perspective view of the rectifier outer housing assembly assembled with the lower flange assembly of the present invention;
FIG. 3 is an overall top view of the modular siphon submersible rectifier of the present invention after assembly;
FIG. 4 is a schematic perspective view of the rectifier outer case assembly assembled with the lower flange assembly in another direction;
FIG. 5 is a schematic perspective view of an outer shell of a modular submersible siphon rectifier according to the present invention;
FIG. 6 is a schematic diagram of the construction of one of the base modules of the modular submersible siphon rectifier of the present invention;
FIG. 7 is a schematic view of the construction of one of the rectifier outer housing assemblies of the present invention;
FIG. 8 is a schematic structural view of a modular installation aid of the present invention;
fig. 9 is a perspective view of the triangular inner channel unit block of the present invention.
The reference numerals in the figures are as follows: the method comprises the following steps of 1-a pneumatic hoist bracket, 2-an assembled floating island water pressing plate, 3-a pipeline, 4-an upper flange, 5-a lower flange component, 6-a pipe clamp, 7-a rectifier outer shell component, and 8, 13-a locking block female head; 9. 12-a locking block male head, 10-a quick-assembly handle, 11-a bolt locking block, 14-a water inlet trash rack, 15-a water stop gasket, 16-a base assembly, 17-a butterfly check valve plate, 18-a triangular inner flow passage unit, 19-a valve plate shaft, 20-a base frame and 21-a water inlet side plate; 22-conical mechanical deflector; 23-top surface of pneumatic hoist support; 24-side surface of the pneumatic hoist bracket; 25, obliquely supporting a pneumatic hoist bracket; 26-a triangular inner runner unit block A; 27-a triangular inner runner unit block B; 28-a triangular inner runner unit block C; 29-inner runner contraction tube; 30-inner flow channel diffusion tube; 31-inner flow passage throat.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, one embodiment of the modular barrier lake emergency drainage siphon diving rectification apparatus of the present invention includes a modular siphon diving rectifier and a modular installation auxiliary device, where the modular installation auxiliary device is used for auxiliary installation of the modular siphon diving rectifier.
The modularized siphon submersible rectifier comprises a flange, an assembled rectifier outer shell, an inner rectifying element and an assembled base.
The flange includes upper flange 4, pin-connected panel lower flange, upper flange 4 and the direct butt joint of pipeline 3, pin-connected panel lower flange with pin-connected panel rectifier shell body butt joint. The assembled lower flange is formed by assembling six lower flange components 5, the assembled rectifier outer shell is formed by assembling six rectifier outer shell components 7, each lower flange component 5 is welded with one rectifier outer shell component 7 (as shown in figure 4), the upper flange 4 is in stepped structure butt joint with the assembled lower flange, a sealing water-stopping gasket is arranged in the stepped structure butt joint, and the screw hole is connected through bolts after the stepped structure is closed.
The split type rectifier shell body is divided into six equal parts, each part (rectifier shell body assembly 7) is a one-sixth split type rectifier shell body, locking block female heads 8 and locking block male heads 9 are arranged on two sides of the rectifier shell body assembly 7 respectively, when the one-sixth split type rectifier shell body is integrally installed, the six rectifier shell body assemblies 7 adopt the five locking block male heads 9 and the five locking block female heads 8 to carry out five-node quick installation (as shown in figure 4), the rest one node adopts a bolt locking block 11 (as shown in figure 5) to carry out fastening, and finally, a pipe clamp 6 (as shown in figure 1) is adopted at the throat part of the split type rectifier shell body to carry out integral fixation. The joint of the six-assembly rectifier shell is sealed by a water-stopping gasket 15.
The inner rectifying element is arranged inside the outer shell of the assembled rectifier and comprises a triangular inner flow passage unit 18, a butterfly check valve plate 17, a triangular inner flow passage unit block and an inner flow passage Venturi tube. The triangular inner flow passage unit 18 is a basic unit for installing an inner flow passage venturi tube, has a certain flow passage length, and has a uniform upper-lower cross section inside the triangular inner flow passage unit 18 for installing a triangular inner flow passage unit block. The butterfly check valve plate 17 is arranged at the opening of the triangular inner flow passage unit 18 and comprises a valve plate shaft 19 hinged to the side edge of the opening of the triangular inner flow passage unit 18 and a butterfly valve plate connected with the valve plate shaft 19, and the butterfly valve plate can close or open the opening of the triangular inner flow passage unit 18 along with the rotation of the valve plate shaft 19. The butterfly valve plate can be different from the triangular inner flow passage unit 18 in size, but needs to have the characteristics of flexible opening and closing and sealing performance, and is arranged at the outlet part of the triangular inner flow passage unit 18.
As shown in fig. 9, the triangular inner flow channel unit block is divided into three parts, including a triangular inner flow channel unit block a (26), a triangular inner flow channel unit block B (27), and a triangular inner flow channel unit block C (28), wherein an inner flow channel diffusion tube 30 is arranged in the triangular inner flow channel unit block a (26), an inner flow channel throat tube 31 is arranged in the triangular inner flow channel unit block B (27), an inner flow channel contraction tube 29 is arranged in the triangular inner flow channel unit block C (28), and fluid passes through the inner flow channel contraction tube 29 from the bottom, then enters the inner flow channel throat tube 31, and finally is ejected through the inner flow channel diffusion tube 30. The unit blocks can be designed with different diffusion angles and contraction angles at different angles and different throat pipe sizes according to requirements, and can be assembled and installed in the triangular inner runner unit 18 at will. The inner flow passage formed by the inner flow passage diffusion pipe 30, the inner flow passage throat pipe 31 and the inner flow passage contraction pipe 29 in the three triangular inner flow passage unit blocks has the characteristics of a Venturi tube, namely, the Venturi tube inner flow passage is formed in the triangular inner flow passage unit blocks. The inner rectifying element integrally comprises a ten million-level porous structure and has the jet flow characteristics of a Venturi tube array.
The invention utilizes the Venturi group jet principle, namely a porous jet structure is formed by the triangular inner flow passage unit 18 in the inner rectifying element and the Venturi tube inner flow passage arranged in the inner rectifying element, so that the flow state can be controlled, and the flow velocity gradient can be optimized. The pipe flow is influenced by a boundary layer, in the boundary layer, the flow velocity distribution is changed along the flow direction, in the edge area which is easily influenced by the boundary layer in the pipe flow, a Venturi inner flow passage with relatively large contraction and diffusion angle (the contraction angle is 23-35 degrees and the diffusion angle is 6-8 degrees) is adopted, the Venturi inner flow passage without boundary flow separation is adopted for outlet flow velocity adjustment, a Venturi inner flow passage with relatively small contraction and diffusion angle (the contraction angle is 12-23 degrees and the diffusion angle is 3-6 degrees) is adopted at the center of the pipe flow, through the arrangement of Venturi tube arrays with different angles, the fluid efficiency is increased by adopting Vacuum Jet Siphon (Vacuum Jet Siphon), high-speed Jet is adopted, the liquid surface tension is protected from being damaged by gravity, the suction of a water inlet is reduced, the pressure head loss of the water inlet is reduced, the local diffusion section of a porous Jet outlet enables the fluid to be gradually decelerated, and the turbulence degree is reduced, and the pressure head loss is further reduced, and the contraction section of the outer shell of the assembled rectifier gathers the locally diffused porous jet flow fluid again, so that the fluid is not turbulent and keeps moving forward in a stable state, and the fluid enters a pipeline system in order. Based on the research on the boundary layer characteristics and transition of high-speed pipe flow, the invention uses a simple Venturi group jet structure to perform manual intervention at the transition position of the pipe fluid, thereby performing effective transition control and greatly reducing the overall head loss of a pipe flow operation system.
Referring to fig. 1, 6 and 7, the assembled base includes six base assemblies 16, and each base assembly 16 includes a base frame 20, a water inlet side plate 21, a conical mechanical deflector 22, and a quick-assembly handle 10.
The middle part of the base frame 20 is provided with an opening as a lateral water inlet, and the opening is provided with a water inlet trash rack 14 to prevent leaves, large solid particles, floating objects and the like from entering the water inlet. Water inlet curb plate 21 is installed respectively to two relative sides of base frame 20, conical surface machinery guide plate 22 is installed on base frame 20's base, and two water inlet curb plates 21 play fixedly conical surface machinery guide plate 22's effect, six base subassembly 16 equipment backs, and conical surface machinery guide plate 22 among six base subassembly 16 forms regular hexagon hexagonal pyramid after assembling, is complete seal structure for arrange the crowded silt of stone, play the effect of touching the end, preventing silting up, even also can keep firm on uneven ground. The conical mechanical guide plate 22 also has an auxiliary effect on the rising of water flow, and is easier to form a stable state due to the contraction of the cross section of the water inlet, and the flow state is not easy to disorder.
Referring to fig. 1 and 8, the modular installation auxiliary device includes a pneumatic hoist bracket 1, a pneumatic hoist, an assembled floating island water pressing plate 2, a pneumatic generating device, a pneumatic tool, a waterproof vibrator, and the like. The pneumatic hoist support 1 is of an assembled type and is divided into three single pieces for combination, and the three single pieces are respectively a pneumatic hoist support top surface 23, a pneumatic hoist support side surface 24 and a pneumatic hoist support inclined supporting tube 25. The three single parts adopt a pipe sleeve insertion rapid assembly mode, and the pneumatic hoist bracket inclined supporting pipe 25 is used for improving the stability of the bracket. The assembled floating island water pressing plate 2 is formed by splicing square assembled modular floating blocks. A plurality of blocks are assembled to form a square mesopore. The pneumatic hoist bracket 1 is tightly attached to the bolt hole of the assembled floating island water pressing plate 2. An installer can stand on the assembled floating island water pressing plate 2 on the water surface to operate. The modularized siphon submersible rectifier can be placed in a water body at the upstream of a barrier lake through a square center hole, the pneumatic hoist and the pipeline are adopted, and the installation height and the installation position can be adjusted as required. The pneumatic tool is used for installing equipment for use, and the pneumatic generating device is used for providing an air source for the pneumatic hoist. Four waterproof vibrators are arranged at the position of the water inlet trash rack 14 to perform auxiliary vibration on the equipment, so that the water inlet trash rack 14 is prevented from being blocked.
The invention applies the fluid state control and rectification jet technology to siphon water delivery, forms a continuous controllable, safe, reliable, energy-saving and high-efficiency large-flow water delivery operation mode, and can realize scientific management and optimized scheduling of the whole process through the remote control terminal. The technology effectively combines the Venturi tube theory, the Bernoulli theory and the siphon principle, increases the fluid efficiency by adopting a group jet flow mode, enlarges the application potential of the siphon technology, realizes the purposes of eliminating the suction vortex, reducing the head loss of a water inlet, eliminating the cavitation erosion water hammer, improving the fluid conveying efficiency, increasing the fluid mechanical efficiency, protecting the safety of a pipe network, and promoting energy conservation and emission reduction.
The invention is different from the innovative fluid conveying mode of gravity self-flow and pumping pressure flow, adopts vacuum group jet flow siphon high-speed conveying, and has no power consumption in operation, stable flow state and continuous controllability. The siphon flow state control technology ensures that the optimal pressure difference between the inlet and the outlet of the pipe flow is kept in the conveying mode, fluid particles at the inlet of the pipe flow are not mixed, the operation is orderly and disorderly, the flow is fast and efficient, and the natural force is maximized. The comparison of the drainage and diversion trench performance of the vacuum siphon drainage device of the invention and the existing water pump is shown in the following table 1:
TABLE 1 comparison list of emergency danger-eliminating engineering measures for barrier lake
The invention breaks through the key technologies of vacuum siphon, diving rectification, drainage control and the like of barrier lake siphon drainage, forms large-diameter siphon equipment which can be quickly laid and strongly adsorbed by low-pressure vacuum, and realizes the rapid drainage of the barrier lake in a complex environment.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides an emergent siphon dive fairing of earning off lake which characterized in that: the system comprises a modular siphon submersible rectifier and modular installation auxiliary equipment; the modular siphon submersible rectifier comprises a flange, an assembled rectifier outer shell, an assembled base and an inner rectifying element arranged in the assembled rectifier outer shell, wherein the flange, the assembled rectifier outer shell, the assembled base and the inner rectifying element are sequentially connected from top to bottom; the inner rectifying element comprises a plurality of triangular inner flow passage units vertically arranged in the outer shell of the assembled rectifier and Venturi tube inner flow passages formed in the triangular inner flow passage units, and the assembled base is provided with a multi-lateral water inlet and a mechanical flow guide cone positioned in the middle of the assembled base; the modularized installation auxiliary equipment comprises an assembled floating island water pressing plate and hoisting equipment fixed on the assembled floating island water pressing plate, wherein the assembled floating island water pressing plate is provided with a middle hole, and the modularized siphon submersible rectifier is placed into a dammed lake water body below the assembled floating island water pressing plate from the middle hole through the hoisting equipment.
2. A modular dammed lake emergency run-off siphon diving fairing as claimed in claim 1, wherein: the pin-connected panel base is assembled by a plurality of base subassemblies and is formed, base subassembly includes base frame, water inlet curb plate, conical surface machinery guide plate, is equipped with the trompil on the base frame as the side direction water inlet, and trompil department installs the water inlet trash rack, the water inlet curb plate is installed respectively to two relative sides of base frame, conical surface machinery guide plate is installed on base frame's base, and conical surface machinery guide plate among a plurality of base subassemblies is assembled the back and is formed mechanical type water conservancy diversion awl.
3. A modular dammed lake emergency run-off siphon diving fairing as claimed in claim 2, wherein: the base frame is characterized in that a locking block male head and a locking block female head are respectively arranged on two sides of the base frame, a quick-assembly handle is arranged in the middle of the base frame, one node is fastened by a bolt locking block when all base assemblies are assembled, other nodes are quickly assembled by the locking block male head and the locking block female head, and finally the quick-assembly handle and the upper portion of the assembled rectifier shell are integrally fixed in the middle of the base frame.
4. A modular dammed lake emergency run-off siphon diving fairing as claimed in claim 1, wherein: the hoisting equipment comprises a pneumatic hoist bracket, a pneumatic hoist fixed on the pneumatic hoist bracket and a pneumatic generating device for providing an air source for the pneumatic hoist.
5. A modular dammed lake emergency run-off siphon diving fairing as claimed in claim 2, wherein: the modular installation auxiliary equipment further comprises a waterproof vibrator installed at the water inlet trash rack and used for assisting vibration of the equipment to prevent the water inlet trash rack from being blocked.
6. A modular dammed lake emergency run-off siphon diving fairing as claimed in claim 1, wherein: the triangular inner flow passage unit is used for installing a triangular inner flow passage unit block, the triangular inner flow passage unit block comprises a triangular inner flow passage unit block A, a triangular inner flow passage unit block B and a triangular inner flow passage unit block C, an inner flow passage diffusion pipe is arranged in the triangular inner flow passage unit block A, an inner flow passage throat pipe is arranged in the triangular inner flow passage unit block B, an inner flow passage contraction pipe is arranged in the triangular inner flow passage unit block C, and the inner flow passage diffusion pipe, the inner flow passage throat pipe and the inner flow passage contraction pipe are sequentially connected to form the Venturi tube inner flow passage.
7. A modular dammed lake emergency run-off siphon diving fairing as claimed in claim 6, wherein: the butterfly check valve plate comprises a valve plate shaft hinged to the side edge of the opening of the triangular inner flow passage unit and a butterfly valve plate connected with the valve plate shaft, and the butterfly valve plate can close or open the opening of the triangular inner flow passage unit along with the rotation of the valve plate shaft.
8. A modular dammed lake emergency run-off siphon diving fairing as claimed in claim 1, wherein: the upper flange and the assembled lower flange are in butt joint by adopting a step structure, a sealing water-stopping gasket is arranged in the upper flange, and the upper flange and the assembled lower flange are connected by adopting bolts at screw holes after being closed.
9. A modular dammed lake emergency run-off siphon diving fairing as claimed in claim 1, wherein: the assembled rectifier shell is formed by assembling a plurality of rectifier shell components, and each lower flange component is welded with one rectifier shell component.
10. A modular dammed lake emergency run-off siphon submersible fairing as recited in claim 9, further comprising: the both sides of rectifier shell body subassembly are equipped with the public head of latch segment and latch segment respectively, and one of them node adopts bolt latch segment fastening when all rectifier shell body subassemblies are assembled, and other nodes adopt the public head of latch segment and the female head of latch segment to carry out the node fast-assembling, then pin-connected panel rectifier shell body throat adopts the pipe clamp to carry out holistic fixed.
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| CN202110402699.4A CN113202827B (en) | 2021-04-14 | 2021-04-14 | Modularized barrier lake emergency drainage siphon diving rectifying device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110402699.4A CN113202827B (en) | 2021-04-14 | 2021-04-14 | Modularized barrier lake emergency drainage siphon diving rectifying device |
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| CN113202827A true CN113202827A (en) | 2021-08-03 |
| CN113202827B CN113202827B (en) | 2022-08-30 |
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Cited By (1)
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| CN114960917A (en) * | 2022-07-06 | 2022-08-30 | 北京中瀚环球真空流体科技有限责任公司 | Cross-dam modular combined truss siphon pipeline adaptive to all terrain |
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| CN113202827B (en) | 2022-08-30 |
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