Construction method of orthogonal threshold power plant (otpp) combined with ship passage (sp)

FIELD: power industry.

SUBSTANCE: at implementation of a construction method of OTPP combined with SP 1, all the component parts of the object being built in the form of ready-made reinforced concrete or metal blocks from the works to the assembly site are delivered by means of a float-on method. Sequence of construction work is started from an earlier installed supporting and restricting barrier consisting of a metal, reinforced concrete or wooden grooved pile projecting in an underwater position through the height sufficient for fixed retention of flooded threshold blocks with orthogonal turbines 4, including foundation of SP 1. First, assembly of the foundation is started by afloat attachment into a common structure of a rectangular shape, the margin of buoyancy of which is sufficient for retention of posts for laying of board panels. Assembly of SP 1 is completed by installation of double-leaf gate 7. Gate 7 is left open till completion of work on installation of threshold blocks with turbines 4 connected through shafting 5 to generators 6 installed on the shore.

EFFECT: construction of HPP on navigable rivers, where it is impossible to erect dams and flood gates as per local conditions.

3 cl, 2 dwg

 

The invention relates to the field of hydropower, in particular to the construction of low-head hydroelectric power plants that use cross-flow (orthogonal) of the turbine (further FROM), set in the floating blocks.

It can be used in different water rivers, providing missluty the passage of ships, because a slight difference of levels created floating thresholds that are made up of turbine modules, units, and their number, as the number of navigation channels (SEC), also constructed pontoon is determined depending on the energy source of the river.

There is a method of Assembly of orthogonal units (CAA) in the factory in the form of floating energomodule blocks and towed to the site on kislogubskoy tidal al. Station (see periodic scientific and technical journal "Small power", No. 4, 2008, page 6). The disadvantage of this method is the impossibility of its implementation with a vertical arrangement of orthogonal unit under the conditions of the rivers.

The technical result of the invention is to show one way of technical solutions hydroelectric station on navigable rivers, where local conditions to build dams and sluices is not possible.

Said invention also provides the tsya is that Malostranske and legkoobu4aemost APES compared to traditional building of hydroelectric power plants (HPP) is achieved without the need for the construction of dams with the inevitable inundation and flooding of vast areas, which is a major deterrent to use of the almost unlimited potential of lowland rivers. Implementation of the proposed method opens the possibility to build APES regardless of landshaftnoi without limitation in amount, where they are needed. Because changes in currents are absent, there is no need for gateways, because replacing them shipping channel (SPC), which is a part OPAS will allow vessels to pass almost non-stop, while the construction of such sudopropusknogo as APES possible floating method, while in the flood and the ice of the SEC, as the thresholds OPES able without delay to skip levels without creating ice jams, and the high water period will not affect the work HOPES because of its turbines are within the threshold blocks, and their generators can be located on the shore in the closed engine compartments.

The technical result is achieved in the method of construction of orthogonal threshold power, combined with the shipping canal (SEC), which according to the invention when it is implementing all the components of the object under construction in the form of finished concrete or metal blocks from the factory to the place of Assembly take floating way the sequence of construction works start from a preset reference-limiting barrier, consisting of a metal, concrete or wooden tongue protruding in a submerged position to a height sufficient for a fixed deduction flooded threshold blocks orthogonal turbines, including the Foundation of the SEC, the Assembly of which begin the first docking afloat in a uniform design of rectangular shape, buoyancy which is sufficient to hold the racks under the tab side panels, complete Assembly SPK installing double-leaf door and leave open until the end of the installation threshold blocks orthogonal turbines, connected through a gear transmission to the established on the banks generators, operation of power possible when the door is closed SPK, which ensures its transition into a state of static pond, around which the river bed is divided into two equal tapering flow directed to the threshold blocks orthogonal turbines; during the passage of ships through the shipping channel through the opening of the gate does not allow.

In addition, the navigation channel is located in the middle of the streamlined its river bed, it divides the stream into two streams directed to the orthogonal turbines on ojousama their channel, increasing their velocity head to values sufficient to ensure that power is not blocked by a dam the rivers.

In addition, the gear transmission ensures the removal of the generators of the power plant beyond the river flow, which simplifies their maintenance.

This technical result is achieved because in the way that all its components are consistent with the law of fluid mechanics, for example, the SEC is not only sudopropusknykh, but it also performs several other important functions, one of the most important is the division of the river into separate streams, the flow rate which increases depending on how the volumetric flow displaces the SEC, if he is half the volume of the river, the velocity streamline the SEC flows will be two times the current of the river, consistent with the laws of hydromechanics, when there is narrowing of the channel, increases the flow velocity, this hydrostatic pressure of the liquid decreases, and the potential energy transforms into kinetic energy, therefore, the power flow depends on the amount of water that it flows through a cross section per unit time, i.e., the flow of water from her head.

For example, if the flow of 0.3 m/s, then the velocity W in streamlined SEC flow will be equal to 0.6 m/s, prob the Dublin core through the threshold unit with tapered rectangular conduit, the socket in which S=50 m2, a S neckline with orthogonal turbine = 15 m2,

according to the Bernoulli equationpw22+P+P=constshould

Q=W1S1=W2S2=0,650/15=2 m/s or 152=30 m3,

is determined by the capacity of the water flow according to the formula:

N=9,81 QH kW, where 9,81 = coefficient rounded. = 1,0; Q=hfc[jl=30 m3, H = head = 2 m/s; N=10302=600 kW.

The conclusion from this is that a small river with energy source 180 m3/s in the presence of SPC and six units (see Fig.1) capable of producing a total capacity of 3,600 kW.

If instead of the rapids was built dam height of 10 m, we would have 36000 kW, but the same capacity of 36,000 kW can be obtained without the construction of the dam with one of the SEC and the cascade of ten sequentially installed along the sides of the rapids, with six units in each.

In Fig.1 shows in plan a section of the river channel, separated closed shipping canal (1) into two streams, aimed at narrowing the channels (2) in the side of the floating threshold units (3) with a horizontally mounted orthogonal turbines (4), their shafts capable of transmission through the transmission (5) to transmit torque from urban to set on the shores of the generators (6). Operation of hydro, as well as pilotage is possible with a single pair of closed pontoon gate (7).

In Fig.2 shown in the cross section threshold unit (3), assembled from two hollow, top and bottom, filled with vocabulator parts constituting the conduit, in a narrow part which has orthogonal turbine (4), the threshold block is retained by the piles (8).

When implementing this method, all components of the object in the form of finished concrete or metal blocks (structures), factory fabricated, delivered to the site (to the target) floating method. The sequence of construction is determined depending on the state of the river bottom, when the instability of the whole river block solid shortened pile of metal, reinforced concrete or wood, forming the specific elevation of an underwater anchor the barrier that serves simultaneously for fixing flooded threshold blocks of 4, including the Foundation of the SEC, collected from the closed ends of reinforced concrete or steel pipes of large diameter, or such as closed boxes in the form of a rectangle first, and its buoyancy enough to keep mounted along its longitudinal sides of the rack for laying side panels. As the SEC, having a static body of water, relative to the ambient flow, due to the potential for filtering from the PC with the possible undermining of the Foundation, on the inner side of the Foundation of the protective suit Berdy, using waterproof roll material with subsequent powder gravel or crushed stone (see "Small power", No. 4, 2008, page 30).

Complete building boards SPK (1) installation of two pairs of folding pontoon gate (7) to complete the installation of floating threshold units with orthogonal turbines (4) installed horizontally or vertically, working on the General partitioned shaft gear transmission (5), a generator (6) mounted on the promenade, all gates (7) leave open. Work OPES possible with one pair of closed gate (7), during the passage of vessels on the SEC (1) is not allowed through the gate opening (7), during an emergency stop of the plant open all gates (7) SEC (1).

1. The method of construction of orthogonal threshold power, combined with the shipping canal (SEC), characterized in that to implement all components of the object under construction in the form of finished concrete or metal blocks from the factory to the place of Assembly take the floating method, the sequence of construction works start from a preset reference-limiting barrier, consisting of a metal, concrete or wood pile, acting under the same position on high, sufficient for fixed retention of flood-prone threshold blocks orthogonal turbines, including the Foundation of the SEC, the Assembly of which begin the first docking afloat in a uniform design of rectangular shape, buoyancy which is sufficient to hold the racks under the tab side panels; complete Assembly SPK installing double-leaf door and leave open until the end of the installation threshold blocks orthogonal turbines connected through a gear transmission to the established on the banks generators, operation of power possible when the door is closed SPK, which ensures its transition into the static state of the reservoir, around which the river bed is divided into two equal tapering flow directed to the threshold blocks orthogonal turbines; during the passage of ships through the shipping channel through the opening of the gate does not allow.

2. The method according to p. 1, characterized in that the navigation channel located in the middle of the streamlined its river bed, it divides the stream into two streams directed to the orthogonal turbines by narrowing their channel, increasing their velocity head to values sufficient to ensure that power is not blocked by a dam the rivers.

3. The method according to p. 1, characterized in that the Tran the fees transfer allows the removal of the generators of the power plant beyond the river, that simplifies their maintenance.



 

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