CN108590922B - Vertical shaft energy recovery device and method based on force transmission of gear chain structure - Google Patents
Vertical shaft energy recovery device and method based on force transmission of gear chain structure Download PDFInfo
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- CN108590922B CN108590922B CN201810227244.1A CN201810227244A CN108590922B CN 108590922 B CN108590922 B CN 108590922B CN 201810227244 A CN201810227244 A CN 201810227244A CN 108590922 B CN108590922 B CN 108590922B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 12
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- 230000000694 effects Effects 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 claims description 6
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
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Abstract
The invention provides a vertical shaft energy recovery device and method based on transmission of a gear chain structure. The energy conversion device is characterized in that a water collecting plate is arranged in a vertical shaft to concentrate water flow entering the vertical shaft to one side of the vertical shaft, the water flow drives a rotating wheel to rotate through impacting a rotating wheel blade after passing through the water collecting plate, a set of gear chain structure is utilized to drive a chain to move through rotation of a main shaft of the device, a gear at the position of a well mouth of the vertical shaft is driven to rotate through movement of the chain, and the gear drives a gear pump to work through the same shaft. Based on the working principle of energy conservation, the invention innovatively stores the water flow energy passing through the vertical shaft so as to provide energy for the running of the whole system and simultaneously give consideration to the original purpose of energy elimination.
Description
Technical Field
The invention relates to the technical field of urban deep tunnel drainage, in particular to an energy dissipation and storage device for inflow water flow of a vertical shaft, which is used for converting the energy of the water flow entering the vertical shaft into mechanical hydraulic energy and achieving the purposes of energy dissipation and energy storage.
Background
With the acceleration of the urbanization process of China, the prominent rainwater problems of frequent waterlogging, aggravated runoff pollution, water resource loss, deterioration of water ecological environment and the like brought by the traditional urban construction mode become one of the limiting factors restricting the social development. At present, the bearing capacity of the environment is increasingly saturated, and the construction of a sponge city becomes the inevitable requirement of the social development of China at present. Aiming at the characteristics of low water surface rate, high building density, complex underground pipelines, dense population, high flood prevention safety pressure and the like in urban central areas, a large deep storage tunnel is adopted as a foundation supporting project and is assisted with source runoff control, so that the method becomes an effective means for solving urban inland inundation and early rain pollution.
In order to avoid the influence on underground pipelines, subways and other facilities, urban deep tunnel storage and drainage tunnels are generally built at 40-60 m underground, and when rainstorm occurs, a large amount of rainwater collected on the ground flows into the underground tunnels through inflow vertical shafts to store part of the rainwater. Therefore, the height of the inflow vertical shaft is high, if water flow directly falls into the bottom of the vertical shaft from the top of the vertical shaft, potential energy of the water flow is converted into kinetic energy, great impact is inevitably generated on the bottom of the vertical shaft, the structure of the vertical shaft is damaged, the problems that vibration and noise are generated in the vertical shaft, a large amount of gas enters a tunnel and the like are caused, and the safe operation of a project is influenced. In order to solve the energy dissipation problem of water flow, energy dissipation structures such as traditional folded plate type structures, slide way type structures, stepped structures and the like are often built in a vertical shaft in the prior engineering, and when water flows through the structures, energy is dissipated, so that the purpose of energy dissipation is achieved. On one hand, the energy dissipation measures are easy to generate various complex hydraulic flow phenomena such as vortex, cavitation and cavitation erosion, aerated water flow and the like in the vertical shaft, and meanwhile, the structure built in the vertical shaft is washed by the water flow, so that the problem of overlarge structural vibration is brought, and the structural safety is threatened. In addition, the inflow vertical shaft is higher, the fall of water flow is larger, and more potential energy is provided, so how to utilize the energy is not similar in concept and structure in the design of the urban deep tunnel inflow vertical shaft. The invention provides and designs a novel inflow shaft structure of a deep tunnel system, which converts energy originally dissipated by a shaft energy dissipation structure into mechanical energy through a novel device on the premise of ensuring safe inflow of water flow, and further converts the mechanical energy into hydraulic energy to be stored, and is used for supplying energy to mechanical devices in the deep tunnel system, such as gates, maintenance elevators and other equipment.
Disclosure of Invention
The purpose of the invention is as follows: in the current deep tunnel regulating and draining system, the water flow of the inflow vertical shaft is mostly subjected to pure energy dissipation measures to avoid the damage of the water flow to the vertical shaft, but the energy of the partial water flow is wasted, so that the defects in the current vertical shaft energy dissipation are overcome.
The technical scheme is as follows: in order to solve the technical problem, the shaft energy recovery device based on the force transmission of the gear chain structure comprises a water collecting system, an energy conversion device and a transmission system which are arranged in a shaft,
the water collecting system comprises a first curved surface formed by drawing a parabola along the diameter of the vertical shaft, a plane water collecting plate tangent to the first curved surface at the joint for guiding water flow to one side of the runner blade away from the main shaft of the runner, a second curved surface formed by sweeping the parabola along a half circle of the vertical shaft, and a cylindrical surface connected with the second curved surface for guiding water flow;
the energy conversion device is provided with semicircular blades;
the transmission system comprises a gear and a chain, and is used for connecting the energy conversion device and the energy storage device.
Specifically, the energy storage device is a gear pump, the semicircular blades are uniformly arranged on the main shaft at intervals of 45 degrees, and chain wheels are symmetrically arranged at two ends of the main shaft
Specifically, one side of the water collecting plate, which is far away from the main stream, is a curved surface part which is positioned in the vertical shaft after the parabola is stretched along a straight line, and the water collecting plate, which is close to the main stream, is a curved surface obtained by sweeping the parabola along a half circumference of the cross section of the vertical shaft, so that the impact effect on the water collecting plate when water flows down from the wellhead of the vertical shaft is reduced. Wherein be close to mainstream one side water-collecting plate and mainly play and prevent that rivers from flowing down along the shaft side wall, prevent to produce great leakage loss, also prevent that rivers from not passing through the runner energy dissipation with great velocity of flow along the direct effect of damaging that flows down and produce comparatively seriously to the dark tunnel.
Specifically, the part of the water collecting plate at the nozzle is defined by a plane tangent to the water collecting plate at the joint of the water collecting plate at the side far away from the main stream and a curved surface of a semi-cylindrical side surface. On the premise of ensuring certain flow capacity of the vertical shaft, water flow is guided to one side far away from the main shaft of the rotating wheel as far as possible, so that the main shaft of the rotating wheel generates torque as much as possible.
Specifically, the water collection sheet nozzle has a certain height, so that water flow passing through the nozzle can have a better flow state, and the water flow can smoothly fall onto the rotor blade after passing through the water collection sheet nozzle.
Specifically, the shape of the blade of the rotating wheel is semicircular, the edge of the blade keeps a certain safe distance from the inner wall of the vertical shaft, and accidents caused by friction collision between the blade and the inner wall of the vertical shaft due to expansion caused by heat and contraction caused by cold or impact deformation and the like are prevented.
Specifically, the configuration of the runner blade is a flat plate type, and according to the energy conservation equation of the runner:
wherein: gamma is the volume weight of water, QeFor the flow through the rotor, V and r represent the velocity perpendicular to the blades and the corresponding force arm, respectively, subscripts 1 and 2 represent the in-and-out position of the rotor, respectively, and ω represents the angular velocity of the rotor rotation.
As shown in the attached figure 5, when water flows through the water collecting plate 3, the water flow has the speed in the vertical direction with the nearest runner blade from the water flow outlet under the action of the water collecting plate 3, at the moment, part of the water flow collides with the blade, the flow speed direction of the rest water flow gradually changes to be close to vertical direction downwards under the action of gravity, at the moment, the part of the water flow collides with the next blade (the next blade of the blade in clockwise sequence), at the moment, the water flow speed direction is also close to be perpendicular to the blade, namely when a flat blade is adopted, under the correction action of the water flow gravity, the water flow can be enabled to have theV u1 Keep a large value, and when the water flow collides with the blades of the runner, the water flow flowing out direction is basically parallel to the blade direction, so that the use of the flat blades can ensure thatV u2 The smaller value is maintained. According to the conservation of energy, other parameters are fixed values, so that the efficiency of energy conversion can be highest when the flat blade is adopted.
Specifically, the chain playing a force transmission role can have a certain margin length, namely when the vertical shaft is in the lowest gas in winter, the length of the chain is just connected with the main shaft of the rotating wheel and the gear at the wellhead position of the vertical shaft, and the chain can work normally, so that the chain is prevented from being too tight to generate larger stress under the action of thermal expansion and cold contraction in winter.
Specifically, the main shaft of the rotating wheel drives the gear at the end part of the main shaft to rotate, the gear at the well mouth of the vertical shaft is driven to rotate under the action of the chain, and the gear at the well mouth of the vertical shaft and the gear pump are connected on the same shaft, so that the gear pump is driven to work to realize the recovery of the water flow energy of the vertical shaft.
When the energy-saving water-saving device is used, water flow entering the vertical shaft is concentrated to one side of the vertical shaft by four water collecting plates, the gravity and kinetic energy of the water flow are used for driving the rotating wheel of the energy conversion device below the water collecting plates to rotate, the main shaft of the rotating wheel drives the gear at the end part of the main shaft of the rotating wheel to rotate, the gear drives the gear at the wellhead of the vertical shaft to rotate through the chain so as to drive the gear pump to work, the purpose of converting the energy of the water flow into mechanical hydraulic energy is realized through the operation of the gear pump, the energy recovery of the water flow of. The position of the water collecting plate can be reasonably determined according to the water flow impact force borne by the water collecting plate and the height of the vertical shaft, so that the water collecting plate is prevented from being impacted greatly due to the fact that the water collecting plate is far away from a well head.
Has the advantages that: in past solutions, the flow through the shaft was only through other energy dissipaters to prevent damage to the shaft and tunnel by the flow, but the energy of the flow was wasted. The invention stores the energy of the water flow of the vertical shaft into mechanical hydraulic energy, and the kinetic energy of the falling water is absorbed and dumped, thereby avoiding the formation of water hammer in the underground pipeline by the energy and simultaneously providing energy for the operation of various parts such as gates and the like in a regulating and draining system.
Description of the drawings:
FIG. 1 is a top view of the water collection sheet structure of the present invention in the upper portion of a shaft for concentrating water flow;
FIG. 2 is a left side view of the water collection sheet structure of the present invention in the upper portion of the shaft for concentrating water flow;
FIG. 3 is a partial schematic view of the present invention at the connection of the gear and the chain;
FIG. 4 is a front view of the overall structure of the present invention;
fig. 5 is a side view of the invention within the interior of a hoistway;
fig. 6 is a schematic view of the overall structure of the invention inside a shaft;
labeled as: the device comprises a first water collecting plate 1, a second water collecting plate 2, a third water collecting plate 3, a fourth water collecting plate 4, an impact type water runner blade 5, a runner spindle 6, a main gear 7, a chain 8, a driven gear 9, a driven shaft 10, a shaft inner wall 11 and a gear pump 12.
The specific implementation mode is as follows:
example (b):
the concrete structure of the energy dissipation and storage device applied to the water collecting vertical shaft of the embodiment is shown in figures 1-5. The water collecting device comprises a first water collecting plate 1, a second water collecting plate 2, a third water collecting plate 3, a fourth water collecting plate 4, an impact type water runner blade 5, a runner main shaft 6, a main gear 7, a chain 8, a driven gear 9, a driven shaft 10 and a gear pump 12.
Wherein, first water-collecting plate 1 is the parabola and is in the inside curved surface part of shaft after the straight line is stretched, mainly plays and prevents that rivers from flowing down along the shaft boundary wall, prevents to produce great seepage loss, also prevents that rivers from not passing through the runner energy dissipation and directly flowing down along the shaft inner wall with great velocity of flow and produce comparatively serious destruction effect to dark tunnel.
The second water collecting plate 2 is a curved surface obtained by sweeping a parabola along a half circumference of the cross section of the vertical shaft so as to reduce the impact effect on the water collecting plate when water flows down from the well mouth of the vertical shaft.
The third water collecting plate 3 is a plane tangent to the water collecting plate at the joint of the side far away from the main stream, and the fourth water collecting plate 4 is a curved surface of a semi-cylindrical side surface. On the premise of ensuring certain flow capacity of the vertical shaft, water flow is guided to one side far away from the main shaft of the rotating wheel as far as possible, so that the main shaft of the rotating wheel generates torque as much as possible.
The first water collection sheet 1, the second water collection sheet 2, the third water collection sheet 3 and the fourth water collection sheet 4 together constitute a water collection system.
The shape of the impact type water runner blade 5 is semicircular, the edge of the blade keeps a certain safe distance with the inner wall 11 of the vertical shaft, and accidents caused by friction and collision between the blade and the inner wall of the vertical shaft due to expansion caused by heat and contraction caused by cold or impact deformation and the like are prevented.
The chain 8 plays the power transmission role, can have certain rich length, when the shaft is in the minimum gas in winter, the chain length just connects the gear of runner main shaft and shaft well head position department to can normally work, prevent that the chain is too tight and produce great stress under the effect of expend with heat and contract with cold winter.
When the water flow conversion device is used, as shown in fig. 6, after water flow flows into a vertical shaft from a wellhead position, the water flow is guided to one side of the vertical shaft under the action of a first water collection plate 1 far away from one side of a main flow and a second water collection plate 2 close to one side of the main flow, the water flow is guided to a third water collection plate 3 close to a side wall by being tangent to the first water collection plate 1 at a joint, and is guided to the farthest position of a rotating wheel blade from a rotating wheel main shaft under the constraint action of a fourth water collection plate 4 which is perpendicular to a horizontal plane and is connected with the second water collection plate 2 to guide the water flow, the impact type water rotating wheel blade 5 and the rotating wheel main shaft 6 are driven by the water flow to rotate, a connected main gear 7 drives a driven gear 9 at the wellhead position of the vertical shaft to rotate through a chain 8, and then drives a. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various changes and modifications may be made by those skilled in the art, and various changes, modifications, equivalents and improvements may be made to the embodiments within the scope of the principle and technical idea of the present invention, and are included in the scope of the present invention.
Claims (1)
1. A vertical shaft energy recovery method based on force transmission of a gear chain structure is characterized in that:
arranging a shaft energy recovery device for transferring force based on a gear chain structure in a shaft, wherein the device comprises a water collecting system, an energy conversion device and a transmission system which are arranged in the shaft;
the water collecting system is used for guiding the water flow to reach one side of the runner blade, which is far away from the runner main shaft, as smoothly as possible, so that a larger moment effect is generated on the runner main shaft; the water collecting system comprises a first curved surface formed by drawing a parabola along the diameter of the vertical shaft, a plane water collecting plate tangent to the first curved surface at the joint for guiding water flow to one side of the runner blade away from the main shaft of the runner, a second curved surface formed by sweeping the parabola along a half circle of the vertical shaft, and a cylindrical surface connected with the second curved surface for guiding water flow;
the energy conversion device is provided with a semicircular blade which is adapted to the shape of the vertical shaft; the semicircular blades are flat plates; the semicircular blades are uniformly arranged on the main shaft of the rotating wheel at intervals of 45 degrees;
the transmission system is arranged between the inner wall and the outer wall of the vertical shaft and is used for connecting the energy conversion device and the energy storage device; the transmission system comprises a runner blade (5), a runner spindle (6), a master gear (7), a slave gear (9), a slave shaft (10) and a chain (8), wherein the runner blade (5) and the runner spindle (6) are driven to rotate by water flow, the connected master gear (7) drives the slave gear (9) at the position of a vertical shaft wellhead to rotate through the chain (8), and then the slave shaft (10) drives an energy storage device to convert the energy of the water flow into mechanical hydraulic energy; the energy storage device is a gear pump; chain wheels are symmetrically arranged at two ends of the main shaft of the rotating wheel;
the water collecting system concentrates water flow entering a vertical shaft to one side of the vertical shaft, the gravity and kinetic energy of the water flow are utilized to drive the rotation of a rotating wheel of an energy conversion device below a plane water collecting plate, a rotating wheel main shaft drives a main gear at the end part of the rotating wheel main shaft to rotate, the main gear at the end part of the rotating wheel main shaft drives a driven gear at the position of the vertical shaft well mouth to rotate through a chain so as to drive a gear pump to work, the energy of the water flow is converted into mechanical hydraulic energy through the operation of the gear pump, and the energy of the water flow of.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810227244.1A CN108590922B (en) | 2018-03-20 | 2018-03-20 | Vertical shaft energy recovery device and method based on force transmission of gear chain structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810227244.1A CN108590922B (en) | 2018-03-20 | 2018-03-20 | Vertical shaft energy recovery device and method based on force transmission of gear chain structure |
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| CN108590922A CN108590922A (en) | 2018-09-28 |
| CN108590922B true CN108590922B (en) | 2020-01-07 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2691636B1 (en) * | 2011-03-31 | 2015-07-08 | Staudt, Friedrich | Weir plant |
| CN205444132U (en) * | 2015-12-26 | 2016-08-10 | 江南水利水电工程公司 | Spillway tunnel structure |
| CN106894940A (en) * | 2015-12-18 | 2017-06-27 | 张家界航空工业职业技术学院 | A kind of TRT in waterworks exit |
| CN107419772A (en) * | 2017-08-17 | 2017-12-01 | 任静 | A kind of agricultural rainwater-collecting and the device to generate electricity |
| CN107435612A (en) * | 2016-05-27 | 2017-12-05 | 黄国彰 | Hydroelectric power generation equipment |
-
2018
- 2018-03-20 CN CN201810227244.1A patent/CN108590922B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2691636B1 (en) * | 2011-03-31 | 2015-07-08 | Staudt, Friedrich | Weir plant |
| CN106894940A (en) * | 2015-12-18 | 2017-06-27 | 张家界航空工业职业技术学院 | A kind of TRT in waterworks exit |
| CN205444132U (en) * | 2015-12-26 | 2016-08-10 | 江南水利水电工程公司 | Spillway tunnel structure |
| CN107435612A (en) * | 2016-05-27 | 2017-12-05 | 黄国彰 | Hydroelectric power generation equipment |
| CN107419772A (en) * | 2017-08-17 | 2017-12-01 | 任静 | A kind of agricultural rainwater-collecting and the device to generate electricity |
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| CN108590922A (en) | 2018-09-28 |
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