CN115262740A - Composite rectification structure for drainage pump station channel - Google Patents
Composite rectification structure for drainage pump station channel Download PDFInfo
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- CN115262740A CN115262740A CN202210991798.5A CN202210991798A CN115262740A CN 115262740 A CN115262740 A CN 115262740A CN 202210991798 A CN202210991798 A CN 202210991798A CN 115262740 A CN115262740 A CN 115262740A
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- 239000002131 composite material Substances 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 323
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 178
- 238000005086 pumping Methods 0.000 claims description 33
- 238000005192 partition Methods 0.000 claims description 13
- 230000009471 action Effects 0.000 abstract description 8
- 238000009826 distribution Methods 0.000 description 21
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 239000003381 stabilizer Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/14—Conveying liquids or viscous products by pumping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/20—Arrangements or systems of devices for influencing or altering dynamic characteristics of the systems, e.g. for damping pulsations caused by opening or closing of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to the technical field of hydraulic engineering equipment, in particular to a composite rectifying structure for a drainage pump station channel; the flow stabilizing pipes are arranged in the forebay and the water inlet pond, the rectangular through holes which are arranged in a staggered mode are formed in the flow stabilizing pipes, the water suction pump is arranged outside the flow stabilizing pipe, water flow in the flow stabilizing pipes flows at a high speed under the action of the water suction pump, so that the pressure in the flow stabilizing pipes is reduced, the pressure in the flow stabilizing pipes is high, the water flow outside the pipe flows into the flow stabilizing pipe through the rectangular through holes outside the flow stabilizing pipe under the action of pressure difference, the flow direction of the water flow in the forebay and the water inlet pond is changed in this way, therefore, the bad flow states such as backflow, vortex and the like generated after the water flow enters the forebay are weakened, and the working efficiency of the drainage pump station is improved.
Description
Technical Field
The invention relates to the technical field of hydraulic engineering equipment, in particular to a composite rectifying structure for a drainage pump station channel.
Background
In cities where people live, high buildings are built everywhere, although underground pipe networks are developed, the pipelines are blocked due to heavy rain and more impurities in discharged water, and waterlogging is formed to influence the environment and the economy. The drainage pump station is a pump station solution for lifting and discharging water, and helps people to solve the problems of difficulty, slowness and the like of pipeline drainage.
The traditional rectifying device for the drainage pump station has the problem of drift, and thus, the Chinese invention patent CN106930199B (published: 2019-02-12) discloses a rectifying device for improving the water outlet flow state of an arc-shaped drainage box culvert, which can improve the water outlet flow state of the arc-shaped drainage box culvert and solve the problem of drift of the outflow of the arc-shaped drainage box culvert, but the rectifying device cannot solve the problem of water flow disorder in a water pool caused by vortex formed by the flow of water in the drainage box culvert;
the traditional rectifying device for the drainage pump station has the problem of uneven outlet flow distribution, and for the purpose, chinese invention patent CN106836456B (published: 2019-02-12) discloses a rectifying device for improving the flow distribution uniformity of a culvert of a water outlet box of a rainwater pump station, wherein the rectifying device can effectively homogenize the water flow flowing into a water outlet well from a water outlet pipe of a water pump, so that the flow distribution uniformity of each outlet of the culvert of the water outlet box of the pump station is improved, the drainage performance of the drainage pump station is improved, but the rectifying device cannot solve the problem that the water flow in a water pool is disturbed due to vortex formed by the flow of the water flow in the culvert of the water outlet box;
the problem of uneven outlet flow velocity distribution of a traditional drainage pump station rectifying device is also solved, chinese invention patent CN107558386B (published: 2018-11-30) discloses a method for improving the flow distribution uniformity of an inclined inflow box culvert of an urban pump station, and the method arranges a composite rectifying device in a pump station gate well, and utilizes the composite rectifying device to carry out homogenization and diversion on the inclined inflow of a total inflow box culvert, thereby being beneficial to improving the flow distribution uniformity and improving the flow state of the water flow in each hole of the inflow diffusion box culvert of the pump station, so that good inflow conditions can be provided for a pump station forebay under different operating conditions;
based on some of the above problems, we now summarize in detail as follows:
1. the general shape that adopts of tradition drainage pump station rectification structure is isosceles trapezoid's forebay, and this kind of forebay forms the swirl easily at the in-process that rivers flow to lead to the unable steady entering intake chamber of rivers, lead to intake chamber rivers disorder, influence drainage pump station's work efficiency.
2. In the process of water flow flowing in the traditional drainage pump station, because the flow and the flow velocity of water flow are large, a large amount of kinetic energy can be generated, and the kinetic energy is generally not utilized, so that the great energy waste is caused.
In view of the above, in order to improve the above technical problems, the present invention provides a method, which has the following specific beneficial effects:
1. the flow stabilizing pipes are arranged in the forebay and the water inlet basin, the rectangular through holes which are arranged in a staggered mode are formed in the flow stabilizing pipes, the water suction pump is arranged outside the flow stabilizing pipes, water flow in the flow stabilizing pipes flows at a high speed under the action of the water suction pump, so that the pressure in the flow stabilizing pipes is reduced, the water flow outside the flow stabilizing pipes flows into the flow stabilizing pipes through the rectangular through holes outside the flow stabilizing pipes under the action of pressure difference due to the high pressure outside the flow stabilizing pipes, the flow directions of the water flow in the forebay and the water inlet basin are changed through the mode, poor flow states such as backflow and vortex are generated after the water flow enters the forebay, and the working efficiency of the drainage pump station is improved.
2. According to the invention, the water wheel is arranged on the water inlet tank, the water wheel is pushed to rotate by a large amount of high-speed water flow, the rotating water wheel is matched with the generator to convert the kinetic energy of the high-speed flowing water flow into electric energy, the generator simultaneously supplies power to the water suction pump in the forebay, and the water suction pump pumps water to enable the pressure difference to be generated inside and outside the stabilizing pipe all the time, so that the kinetic energy of the large amount of high-speed water flow in the forebay is utilized, and the effect of saving energy is achieved at the same time.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the utility model provides a compound rectification structure that drainage pump station passageway was used, through install stationary flow unit and rotary unit in the forebay, can interfere the flow direction of rivers through the pressure difference to weaken rivers and produced bad flow states such as backward flow, swirl after getting into the forebay, increased drainage pump station's work efficiency, installed water wheels at the intake pool simultaneously, thereby utilized the kinetic energy of a large amount of high-speed rivers in the forebay, reached energy saving's effect.
The invention provides the following technical scheme: a composite rectification structure for a drainage pump station channel comprises a water inlet, a front pool, a water inlet pool and partition piers, wherein one end of the water inlet is fixedly and hermetically connected with one end of the front pool, the other end of the front pool is fixedly connected with the water inlet pool, the partition piers are fixedly arranged in the water inlet pool, and the three partition piers are uniformly distributed in the water inlet pool; the flow stabilizing unit is fixedly arranged in the forebay and the water inlet tank and is used for preventing water flow from generating poor flow states such as backflow, vortex and the like after entering the forebay;
the flow stabilizing unit comprises a pipe frame, a bearing, a flow stabilizing pipe, a fixed shaft, a first water wheel, a water pumping pipe, a pump box and a water pumping pump, wherein the pipe frame is fixedly arranged in the forebay and the water inlet basin, and the pipe frame is used for fixing the bearing and simultaneously providing support for the flow stabilizing pipe; a bearing is fixedly arranged on the pipe frame and used for matching with the flow stabilizing pipe to rotate in the pipe frame; a flow stabilizing pipe is fixedly arranged in the bearing and is used for preventing water flow from generating poor flow states such as backflow, vortex and the like after entering the forebay; the pipe frames and the bearings are uniformly distributed along the flow stabilizing pipe, and the pipe frames are uniformly distributed to better support the flow stabilizing pipe; the flow stabilizing pipe is rotatably connected with a water pumping pipe, and the water pumping pipe is used for being matched with a water pumping pump to pump water in the flow stabilizing pipe; one end of the water pumping pipe is fixedly connected with a water pumping pump, and the water pumping pump is used for pumping water in the flow stabilizing pipe and simultaneously increasing the pressure intensity in the flow stabilizing pipe to generate an adsorption effect on external water flow; a pump box is fixedly arranged on the partition pier, the water suction pump is fixedly arranged in the pump box, and the pump box is used for isolating the water suction pump from water flow; a fixed shaft is fixedly arranged on the partition pier and used for supporting the first water wheel; the first water wheel is rotationally connected with the shaft center, and is pushed by water flow in the water inlet tank to rotate to generate electric energy to supply power to the water suction pump; the water wheel is electrically connected with the water suction pump.
The stationary flow unit during operation, rivers promote a water wheels and rotate, because a water wheel and suction pump electric connection, so when rivers promote a water wheel high-speed rotation, the kinetic energy of a water wheel is converted into the electric energy through generator (not drawn in the picture), the electric energy drive suction pump cooperation suction pipe pumps the intraductal water of stationary flow, the intraductal velocity of flow of stationary flow increases, make the pressure in the stationary flow pipe reduce, so the stationary flow pipe can produce the adsorption to the aquatic products in the front pool, thereby the original direction of rivers is disturbed, thereby the formation of swirl has been prevented.
Preferably, a rotating unit is fixedly installed at the end part of the flow stabilizing unit and is used for rotating the flow stabilizing pipe;
the rotating unit comprises a rotating shaft, a second water wheel, a first bevel gear and a second bevel gear, one side of the rotating shaft is rotatably installed on one side of the water inlet pool, the other side of the rotating shaft is rotatably installed on one side of the pipe frame, and the rotating shaft is used for driving the first bevel gear to rotate; the rotating shaft is fixedly connected with a second water wheel and a first bevel gear coaxially, water flow pushes the second water wheel to rotate, the second water wheel drives the rotating shaft to rotate, and the rotating shaft drives the first bevel gear to rotate; the second-number bevel gear is fixedly arranged at one end of the flow stabilizing pipe and is used for driving the flow stabilizing pipe to rotate; the first bevel gear is meshed with the second bevel gear.
When the rotating unit works, water flow pushes the second water wheel to rotate, the water wheel rotates to drive the rotating shaft to rotate, the rotating shaft drives the first bevel gear to rotate, the first bevel gear rotates to drive the second bevel gear to rotate, and the second bevel gear rotates to drive the flow stabilizing pipe to rotate; the rotating unit drives the flow stabilizing pipe to rotate when the stabilizing unit works, and the flow stabilizing pipe is driven by the rotating unit to rotate when the flow stabilizing unit pumps water; under the matching of the flow stabilizing unit and the rotating unit, water flow near the flow stabilizing pipe can be sucked into the flow stabilizing pipe, the direction of the water flow can be changed at the moment, meanwhile, the water flow with the changed direction and the water flow forming the vortex are interfered with each other, and finally the vortex is prevented from being generated, so that the drainage pump station discharges stable and uniform water flow, and the performance and the stability of the drainage pump station are improved;
after the flow stabilizing unit and the rotating unit are matched with each other to work, the working effect of whether the flow stabilizing unit and the rotating unit exist in the drainage pump station is compared, firstly, as shown in fig. 8 to 9, the flow stabilizing unit and the rotating unit do not exist in a front pool and a water inlet pool of the drainage pump station, water flow can generate vortex in the flowing process, the vortex can greatly influence the normal flowing of the water flow, and the water flow originally flowing to the forward area can flow to other areas after the direction of the water flow is changed due to the vortex, so that the condition can cause the water flow to be unevenly distributed, further cause the disorder of the water flow flowing out from the pump station, and reduce the working efficiency of the drainage pump station; after the flow stabilizing unit and the rotating unit are arranged in the forebay and the water inlet pool, the direction of water flow is changed, and because the flow velocity of the water flow in the flow stabilizing pipe is accelerated, the pressure difference is generated inside and outside the flow stabilizing pipe, so that the water flow is sucked into the flow stabilizing pipe through the through hole, and then the interference is formed with the water flow forming the vortex, and the direction of the water flow returns to the positive rail; meanwhile, detailed simulation analysis is carried out on the water yield of each area of the water inlet pool to obtain a line graph shown in fig. 10, under the condition that the flow stabilizing unit and the rotating unit are not installed, the flow difference of each area of the water inlet pool is very large, and after the flow stabilizing unit and the rotating unit are installed, the flow of each area of the water inlet pool is relatively stable above and below the point A, which means that the working efficiency of the drainage pump station is higher and more stable after the flow stabilizing unit and the rotating unit are installed; the comparison graph of the total flow distribution uniformity shown in fig. 11 is obtained during analysis, and compared with the comparison graph of the total flow distribution uniformity without the flow stabilizing tube, the comparison graph of the total flow distribution uniformity with the flow stabilizing tube is high, which means that the flow stabilizing unit and the rotating unit are arranged in the front pool and the water inlet pool to enable the drainage pump station to achieve uniform flow distribution, the work efficiency is high, and meanwhile, the damage to the drainage pump station due to uneven flow distribution is avoided.
Preferably, the number of the flow stabilizing pipes is four, and the four flow stabilizing pipes are uniformly distributed in the water inlet pool; the four flow stabilizing pipes are exactly in one-to-one correspondence with the four areas separated by the dividing piers; the four flow stabilizing pipes divide the front pool and the water inlet pool into four areas, so that the flowing space of water flow can be compressed; because the area which can be influenced by each flow stabilizing pipe is limited, the four flow stabilizing pipes can better prevent the water flow from generating adverse flow states such as backflow, vortex and the like after entering the front pool.
Preferably, the flow stabilizing pipe is provided with a rectangular through hole, the rectangular through hole is difficult to block compared with a circular through hole, and meanwhile, the rectangular through hole is smooth to water inflow compared with the circular through hole.
Preferably, the rectangular through holes in the flow stabilizing pipe are distributed in a staggered manner, and compared with regular array distribution, the rectangular through holes are distributed in a staggered manner, so that the direction of water flow can be better interfered, the generation of vortexes is avoided, and the flowing stability of the water flow is improved.
Preferably, the water level gauge is installed to the water inlet, and water level gauge is arranged in the monitoring drain pump to the water inlet installation, prevents that the drainage pump station from carrying out overload work, influences the work efficiency of drainage pump station.
Preferably, the pipe frame adopts an H-shaped structure, the blocking effect of the pipe frame on water flow can be reduced, and water flow is effectively prevented from impacting the pipe frame, so that the flow speed of the water flow is reduced; the reduction of the water flow velocity can lead to the reduction of the rotational speed of the first water wheel and the second water wheel, thereby leading to the insufficient power of the drainage pump station.
Preferably, stationary flow tube end fixed mounting flowmeter, flowmeter are used for detecting the rivers flow through the stationary flow tube, and when flow was less than default A, the through-hole most of in the predictive stationary flow tube was blockked up, and the flowmeter sends out the police dispatch newspaper this moment, and the suggestion staff stops the work of drainage pump station to clear up the through-hole on the stationary flow tube or change the stationary flow tube.
Preferably, the diameter of the flow stabilizing pipe is 1.25m-1.5 m;
the length of the water inlet pool is 10m, the water inlet pool is averagely divided into four areas by the dividing piers, the length of each area is 2.5m, and the diameter of the flow stabilizing pipe is preferably 50% -60% of the length of the water inlet pool due to the fact that the flow stabilizing pipe is used for preventing water flow from generating backflow, vortex and other bad flow states after entering the front pool, so that the efficient work of the flow stabilizing pipe can be met, the blocking effect on the water flow can not be caused, and the work of a follow-up water wheel and a follow-up water wheel can be influenced. The diameter d of the flow stabilizer tube should therefore be selected to be
d 1 ＝D×0.5＝2.5×0.5＝1.25m
d 2 ＝D×0.6＝2.5×0.6＝1.5m
The diameter of the flow stabilizing tube should be between 1.25m and 1.5 m.
Preferably, the rotating speed of the flow stabilizing pipe is between 0.21rad/s and 0.26 rad/s;
taking the flow velocity of water flow in the drainage pump station as an example, since the flow velocity of water flow is 4m/s and is generally calculated according to the standard loss of the model, the rotation speed of the water wheel is 3m/s, so that the rotation speed of the first bevel gear is 3m/s, and the rotation speed of the second bevel gear is 2 because the transmission ratio of the bevel gear of the structure is
Therefore, the second bevel gear drives the flow stabilizing pipe to rotate at a speed of 2m/s, and the diameter of the flow stabilizing pipe is 1.25m-1.5m, so that the flow stabilizing pipe rotates at a speed of
Therefore, the rotating speed of the steady flow tube is between 0.21rad/s and 0.26rad/s.
The invention has the following beneficial effects:
1. the flow stabilizing pipes are arranged in the forebay and the water inlet basin, the rectangular through holes which are arranged in a staggered mode are formed in the flow stabilizing pipes, the water suction pump is arranged outside the flow stabilizing pipes, water flow in the flow stabilizing pipes flows at a high speed under the action of the water suction pump, so that the pressure in the flow stabilizing pipes is reduced, the water flow outside the flow stabilizing pipes flows into the flow stabilizing pipes through the rectangular through holes outside the flow stabilizing pipes under the action of pressure difference due to high pressure in the flow stabilizing pipes, the flow direction of the water flow in the forebay and the water inlet basin is changed through the mode, the water flow is prevented from generating poor flow states such as backflow and vortex after entering the forebay, and the working efficiency of the drainage pump station is improved.
2. According to the invention, the water wheel is arranged on the water inlet tank, the water wheel is pushed to rotate by a large amount of high-speed water flow, the rotating water wheel is matched with the generator to convert the kinetic energy of the high-speed flowing water flow into electric energy, the generator simultaneously supplies power to the water suction pump in the forebay, and the water suction pump pumps water to enable the pressure difference to be generated inside and outside the stabilizing pipe all the time, so that the kinetic energy of the large amount of high-speed water flow in the forebay is utilized, and the effect of saving energy is achieved at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top view of the overall structure of the present invention;
FIG. 3 is a side view of the overall structure of the present invention;
FIG. 4 is a schematic view of a flow stabilizer unit and a rotary unit of the present invention;
FIG. 5 is a front view of the overall structure of the present invention;
FIG. 6 is a schematic view of a current stabilizer tube of the present invention;
FIG. 7 is a schematic view of a tube rack of the present invention;
FIG. 8 is a comparison of water flow directions according to the present invention;
FIG. 9 is a water flow pattern of the present invention;
FIG. 10 is a graph showing a comparison of the flow rates of the regions of the intake pool according to the present invention;
fig. 11 is a graph comparing the uniformity of the total flux distribution of the present invention.
In the figure: the device comprises a water inlet 1, a filter screen 12, a forebay 2, a water inlet pool 3, a partition pier 4, a flow stabilizing unit 5, a pipe frame 51, a bearing 52, a flow stabilizing pipe 53, a fixed shaft 54, a first water wheel 55, a water pumping pipe 56, a pump box 57, a water pumping pump 58, a rectangular through hole 59, a rotating unit 6, a rotating shaft 61, a second water wheel 62, a first bevel gear 63, a second bevel gear 64 and a flowmeter 7.
Detailed Description
In order to better understand the technical scheme, the technical scheme is described in detail in the following with reference to the attached drawings of the specification and specific embodiments.
Example 1: as shown in fig. 1 to 5, the composite rectification structure for the drainage pump station channel comprises a water inlet 1, a front pool 2, a water inlet pool 3 and studs 4, wherein one end of the water inlet 1 is fixedly and hermetically connected with one end of the front pool 2, the other end of the front pool 2 is fixedly connected with the water inlet pool 3, the studs 4 are fixedly arranged in the water inlet pool 3, and the three studs 4 are uniformly distributed in the water inlet pool 3; the flow stabilizing units 5 are fixedly arranged in the forebay 2 and the water inlet pool 3, and the flow stabilizing units 5 are used for preventing water flow from generating poor flow states such as backflow, vortex and the like after entering the forebay 2;
the flow stabilizing unit 5 comprises a pipe frame 51, a bearing 52, a flow stabilizing pipe 53, a fixed shaft 54, a first water wheel 55, a water pumping pipe 56, a pump box 57 and a water pumping pump 58, wherein the pipe frame 51 is fixedly arranged in the forebay 2 and the water inlet pool 3, and the pipe frame 51 is used for fixing the bearing 52 and simultaneously providing support for the flow stabilizing pipe 53; a bearing 52 is fixedly arranged on the pipe frame 51, and the bearing 52 is used for matching with a flow stabilizing pipe 53 to rotate in the pipe frame 51; a flow stabilizing pipe 53 is fixedly arranged in the bearing 52, and the flow stabilizing pipe 53 is used for preventing water flow from generating poor flow states such as backflow, vortex and the like after entering the forebay 2; the pipe frame 51 and the bearing 52 are uniformly distributed along the flow stabilizing pipe 53, and the uniform distribution of the pipe frame 51 can better provide support for the flow stabilizing pipe 53; the flow stabilizing pipe 53 is rotatably connected with a water pumping pipe 56, and the water pumping pipe 56 is used for being matched with a water pumping pump 58 to pump water in the flow stabilizing pipe 53; one end of the water pumping pipe 56 is fixedly connected with a water pumping pump 58, and the water pumping pump 58 is used for pumping water in the flow stabilizing pipe 53 and simultaneously increasing the pressure in the flow stabilizing pipe 53 to generate an adsorption effect on external water flow; a pump box 57 is fixedly installed on the partition pier 4, the water pump 58 is fixedly installed in the pump box 57, and the pump box 57 is used for isolating the water pump 58 from water flow; a fixed shaft 54 is fixedly arranged on the partition pier 4, and the fixed shaft 54 is used for providing support for the first water wheel 55; the fixed shaft 54 is coaxially and rotatably connected with a first water wheel 55, and the first water wheel 55 is pushed by water flow in the water inlet tank 3 to rotate to generate electric energy to supply power to the water suction pump 58; the first water wheel 55 is electrically connected with the water pump 58.
When the flow stabilizing unit 5 works, water flow pushes the first water wheel 55 to rotate, because the first water wheel 55 is electrically connected with the water pump 58, when the water flow pushes the first water wheel 55 to rotate at a high speed, kinetic energy of the first water wheel 55 is converted into electric energy through a generator (not shown in the figure), the electric energy drives the water pump 58 to cooperate with the water pumping pipe 56 to pump water in the flow stabilizing pipe 53, the flow rate of the water flow in the flow stabilizing pipe 53 is increased, pressure in the flow stabilizing pipe 53 is reduced, so that the pressure difference flow stabilizing pipe 53 can adsorb water in the forebay 2, the original direction of the water flow is disturbed, and vortex generation is prevented.
the rotating unit 6 comprises a rotating shaft 61, a second water wheel 62, a first bevel gear 63 and a second bevel gear 64, one side of the rotating shaft 61 is rotatably installed on one side of the water inlet pool 3, the other side of the rotating shaft 61 is rotatably installed on one side of the pipe frame 51, and the rotating shaft 61 is used for driving the first bevel gear 63 to rotate; the rotating shaft 61 is coaxially and fixedly connected with a second water wheel 62 and a first bevel gear 63, water flow pushes the second water wheel 62 to rotate, the second water wheel 62 drives the rotating shaft 61 to rotate, and the rotating shaft 61 drives the first bevel gear 63 to rotate; the second bevel gear 64 is fixedly installed at one end of the flow stabilizing pipe 53, and the second bevel gear 64 is used for driving the flow stabilizing pipe 53 to rotate; the first bevel gear 63 meshes with the second bevel gear 64.
When the rotating unit 6 works, water flow pushes the second water wheel 62 to rotate, the water wheel rotates to drive the rotating shaft 61 to rotate, the rotating shaft 61 drives the first bevel gear 63 to rotate, the first bevel gear 63 rotates to drive the second bevel gear 64 to rotate, and the second bevel gear 64 rotates to drive the flow stabilizing pipe 53 to rotate; the flow stabilizing unit 5 works while the rotating unit 6 works, and the rotating unit 6 also drives the flow stabilizing pipe 53 to rotate in the process of pumping water by the flow stabilizing unit 5; under the matching of the flow stabilizing unit 5 and the rotating unit 6, water flow near the flow stabilizing pipe 53 can be sucked into the flow stabilizing pipe 53, the direction of the water flow can be changed at the moment, meanwhile, the water flow with the changed direction and the water flow forming the vortex are mutually interfered, and the generation of the vortex is finally avoided, so that the drainage pump station discharges stable and uniform water flow, and the performance and the stability of the drainage pump station are improved;
after the flow stabilizing unit 5 and the rotating unit 6 are matched with each other to work, the working effects of the flow stabilizing unit 5 and the rotating unit 6 of the drainage pump station are compared, firstly, as shown in fig. 8 to 9, the flow stabilizing unit 5 and the rotating unit 6 are not arranged in the front pool 2 and the water inlet pool 3 of the drainage pump station, vortex is generated in the flowing process of water flow, the vortex can greatly influence the normal flowing of the water flow, and the water flow changes the direction due to the vortex, so that the water flow which originally flows to the forward area flows to other areas, the condition causes the uneven distribution of the water flow, further causes the disorder of the water flow flowing out of the drainage pump station, and reduces the working efficiency of the drainage pump station; after the flow stabilizing unit 5 and the rotating unit 6 are installed in the front pool 2 and the water inlet pool 3, the direction of water flow is changed, and the flow velocity of the water flow in the flow stabilizing pipe 53 is accelerated, so that pressure difference is generated between the inside and the outside of the flow stabilizing pipe 53, the water flow is sucked into the flow stabilizing pipe 53 through the through hole 59, and then interference is formed between the water flow and the water flow forming vortex, and the direction of the water flow returns to the positive rail; meanwhile, detailed simulation analysis is also performed on the water yield of each area of the water inlet pool 3, so as to obtain a line graph as shown in fig. 10, under the condition that the flow stabilizing unit 5 and the rotating unit 6 are not installed, the flow difference of each area of the water inlet pool 3 is very large, and after the flow stabilizing unit 5 and the rotating unit 6 are installed, the flow of each area of the water inlet pool 3 is relatively stable above and below the point a, which means that after the flow stabilizing unit 5 and the rotating unit 6 are installed, the working efficiency of the drainage pump station is higher and more stable; the comparison graph of the total flow distribution uniformity shown in fig. 11 is obtained while analyzing, and compared with the comparison graph of the total flow distribution uniformity without the flow stabilizing tube 53, the comparison graph of the total flow distribution uniformity with the flow stabilizing tube 53 is higher, which means that the flow stabilizing unit 5 and the rotating unit 6 are installed in the front pool 2 and the water inlet pool 3, so that the drainage pump station can achieve uniform flow distribution, the work efficiency is high, and meanwhile, the damage to the drainage pump station due to uneven flow distribution is avoided.
Embodiment 7 on the basis of the above embodiment 1, as shown in fig. 7, as a preferred embodiment of the present invention, the pipe frame 51 adopts an H-shaped structure, and the pipe frame 51 adopts an H-shaped structure, so that the blocking effect of the pipe frame 51 on the water flow can be reduced, and the area of the pipe frame 51 impacted by the water flow is effectively reduced, thereby avoiding the reduction of the flow velocity of the water flow; the reduction of the water flow rate can result in the reduction of the rotational speed of the first water wheel 55 and the second water wheel 62, thereby resulting in the insufficient power of the drainage pumping station.
Embodiment 9 on the basis of the above embodiment 1, as shown in fig. 1, the diameter of the flow stabilizing pipe 53 is 1.25m-1.5m as a preferred embodiment of the present invention;
the length of the water inlet tank 3 is 10m, the dividing pier 4 equally divides the water inlet tank 3 into four regions, the length of each region is 2.5m, and the diameter of the flow stabilizing pipe 53 is preferably 50% -60% of the length of the water inlet tank 3 due to the fact that the flow stabilizing pipe 53 is used for preventing water from flowing into the front tank 2 and then generating backflow, vortexes and other bad flow states, so that the high-efficiency work of the flow stabilizing pipe 53 can be met, the blocking effect on the water flow can not be caused, and the work of the first water wheel 55 and the second water wheel 62 is affected. The diameter d of the flow stabilizer tube 53 should therefore be selected to be
d 1 ＝D×0.5＝2.5×0.5＝1.25m
d 2 ＝D×0.6＝2.5×0.6＝1.5m
The diameter of the flow stabilizer tube 53 should be between 1.25m and 1.5 m.
Example 10 on the basis of the above example 1, as shown in fig. 1, as a preferred example of the present invention, the rotation speed of the steady flow pipe 53 is between 0.21rad/s and 0.26 rad/s;
taking the flow velocity of water flow in the drainage pumping station as an example, since the flow velocity of water flow is 4m/s and is generally calculated according to the standard loss of the model, the rotation speed of the water wheel is 3m/s, so that the rotation speed of the first bevel gear 63 is 3m/s, and the rotation speed of the second bevel gear 64 is 2 because the transmission ratio of the bevel gear of the structure is
Therefore, the second bevel gear 64 drives the flow stabilizing tube 53 to rotate at a speed of 2m/s, and the flow stabilizing tube 53 has a diameter of 1.25m to 1.5m, so that the flow stabilizing tube 53 rotates at a speed of 2m/s
Therefore, the rotation speed of the steady flow tube 53 is between 0.21rad/s and 0.26rad/s.
During operation, water flow enters the forebay 2 through the water inlet 1, the water level gauge 12 is used for monitoring the water level of the rectification structure of the drainage pump station, the water flow enters the water inlet 3 after flowing through the forebay 2, in the water inlet 3, the water flow drives the first water wheel 55 and the second water wheel 62 to rotate, the first water wheel 55 drives the first bevel gear 63 to rotate, the first bevel gear 63 drives the second bevel gear 64 to rotate, and the second bevel gear 64 drives the flow stabilizing pipe 53 to rotate; the second water wheel 62 is in running fit with the generator to convert kinetic energy into electric energy, the generator is used for supplying power to the water pump 58, after the water pump 58 works, the flow velocity of water flow in the flow stabilizing pipe 53 is increased, the pressure intensity in the flow stabilizing pipe 53 is reduced, the pressure intensity outside the flow stabilizing pipe 53 is increased, and the water flow outside the flow stabilizing pipe 53 flows into the pipe under the action of pressure intensity difference, so that the direction of the water flow outside the flow stabilizing pipe 53 is changed, and the water flow flows to the direction through hole 59 of the flow stabilizing pipe 53 under the action of the pressure intensity difference, so that vortexes and backflow in the forebay 2 and the water inlet 3 are prevented; because the through holes 59 are only arranged on the two sides of the flow stabilizing tube 53, the flow stabilizing tube 53 is driven to rotate by bevel gear transmission so as to prevent the generation of vortexes and backflow in the vertical direction of the flow stabilizing tube 53; install flowmeter 7 at the terminal of flow stabilizing pipe 53, flowmeter 7 real-time detection flow in flow stabilizing pipe 53, when flow is less than default A, indicate that the through-hole 59 in flow stabilizing pipe 53 is most stopped up, flowmeter 7 sends the police dispatch newspaper this moment, and the suggestion staff stops the work of drainage pumping station to clear up through-hole 59 on flow stabilizing pipe 53 or change flow stabilizing pipe 53.
The foregoing shows and describes the general principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A composite rectifying structure for a drainage pump station channel comprises a water inlet (1), a front pool (2), a water inlet pool (3) and partition piers (4), wherein one end of the water inlet (1) is fixedly and hermetically connected with one end of the front pool (2), the other end of the front pool (2) is fixedly connected with the water inlet pool (3), the partition piers (4) are fixedly arranged in the water inlet pool (3), and the three partition piers (4) are uniformly distributed in the water inlet pool (3); the device is characterized in that a flow stabilizing unit (5) is fixedly arranged in the forebay (2) and the water inlet pool (3), and the flow stabilizing unit (5) is used for preventing water flow from generating poor flow states such as backflow, vortex and the like after entering the forebay (2);
the flow stabilizing unit (5) comprises a pipe frame (51), a bearing (52), a flow stabilizing pipe (53), a first fixed shaft (54), a first water wheel (55), a water pumping pipe (56), a pump box (57) and a water pumping pump (58), and the pipe frame (51) is fixedly arranged in the forebay (2) and the water inlet pool (3); a bearing (52) is fixedly arranged on the pipe frame (51), a flow stabilizing pipe (53) is fixedly arranged in the bearing (52), and the pipe frame (51) and the bearing (52) are uniformly distributed along the flow stabilizing pipe (53); the flow stabilizing pipe (53) is rotatably connected with a water pumping pipe (56), and one end of the water pumping pipe (56) is fixedly connected with a water pumping pump (58); a pump box (57) is fixedly arranged on the partition pier (4), and the water suction pump (58) is fixedly arranged in the pump box (57); a fixed shaft (54) is fixedly mounted on the partition pier (4), a water wheel (55) is connected with the fixed shaft (54) in a rotating mode through the same axle center, and the water wheel (55) is electrically connected with the water suction pump (58).
2. The composite rectification structure for the drainage pump station channel according to claim 1, characterized in that: the end part of the flow stabilizing unit (5) is fixedly provided with a rotating unit (6), and the rotating unit (6) is used for rotating the flow stabilizing pipe (53);
the rotating unit (6) comprises a rotating shaft (61), a second water wheel (62), a first bevel gear (63) and a second bevel gear (64), one side of the rotating shaft (61) is rotatably installed on one side of the water inlet pool (3), and the other side of the rotating shaft (61) is rotatably installed on one side of the pipe frame (51); a second water wheel (62) and a first bevel gear (63) are coaxially and fixedly connected to the rotating shaft (61), and a second bevel gear (64) is fixedly installed at one end of the flow stabilizing pipe (53); the first bevel gear (63) is meshed with the second bevel gear (64).
3. The composite rectification structure for the drainage pump station channel according to claim 2, characterized in that: the number of the flow stabilizing pipes (53) is four, and the four flow stabilizing pipes are uniformly distributed in the water inlet pool (3).
4. The composite rectification structure for the drainage pump station channel according to claim 3, wherein: the flow stabilizing pipe (53) is provided with a rectangular through hole (59).
5. The composite rectification structure for the drainage pump station channel according to claim 4, wherein: through holes (59) in the flow stabilizing pipe (53) are distributed in a staggered manner.
6. The composite rectification structure for the drainage pump station channel according to claim 5, wherein: the diameter of the flow stabilizing pipe (53) is 1.25-1.5 m.
7. The composite rectification structure for the drainage pump station channel according to claim 6, wherein: the water inlet (1) is provided with a water level meter (12).
8. The composite rectification structure for the drainage pumping station channel according to claim 7, characterized in that: the pipe frame (51) adopts an H-shaped structure.
9. The composite rectification structure for the drainage pumping station channel according to claim 8, characterized in that: and a flowmeter (7) is fixedly arranged at the end part of the flow stabilizing pipe (53).
10. The composite rectification structure for the drainage pumping station channel according to claim 9, characterized in that: the rotating speed of the flow stabilizing pipe (53) is 0.21rad/s-0.26rad/s.
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| CN202210991798.5A CN115262740B (en) | 2022-08-17 | 2022-08-17 | Composite rectifying structure for drainage pump station channel |
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| CN1120130A (en) * | 1995-04-22 | 1996-04-10 | 天津开发区超凡软基改良新技术公司 | Jet vacuum pump specially for strengthening weak ground by vacuum precompression method |
| JP2003172298A (en) * | 2001-12-06 | 2003-06-20 | Mitsubishi Heavy Ind Ltd | Flow straightening device for suction water passage |
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