CN204080749U - The flexible trash block system in a kind of plant without storage - Google Patents

Abstract

The utility model discloses the flexible trash block system in a kind of plant without storage, comprise motor, A.C. contactor, also comprise n root steel bracket (1), n >=2, m root wire rope (2), m >=3, nylon wire (3), electric winch (4) and pulley (5), wherein, described wire rope (2) is arranged on the pulley (5) of steel bracket (1), wire rope (2) is arranged nylon wire (3), electric winch (4) connecting steel wire ropes (2), motor, A.C. contactor are electrically connected with electric winch (4).The utility model structure is simple, and civil engineering is few, does not change dam hydraulic structure original structure, is convenient to field conduct; Easy operation easy to use, maintenance and repair can be carried out in conjunction with unit annual overhaul, and construction investment is lower, and economy is suitable for again.Execute-in-place simple and convenient, the problem that labour intensity is large, security risk is large of manually removing contamination before effectively solving dam.

Description

The flexible trash block system in a kind of plant without storage

Technical field

The utility model relates to one and blocks dirty device, particularly blocks dirty device before a kind of water power dam.

Background technology

The main source of dirt before water power dam: one is upper water power plant tail water to household garbage, the blowdown gurry in the interval rural area of intake gate and market town, and two is the floating things on tributary, three is the weeds of grow prolifically on wild pasture and water in channel and bank slope.The kind of dirt mainly contains pasture and water, straw, bamboo wood, branch, round log, plastic waste material, spoil etc.A part for dirt is that floating state moves in current, and under normal circumstances, the floating dirt of this class can be stopped by the dirty ridge of blocking in power station substantially.But, in dirt more flood season or heavy rain period, because dirt comes that amount is large and rapidly, a large amount of floating thing is piled up before blocking the dirty ridge, and form abundant plate in blocks, thickness can reach several meters.When these dirts can not be removed in time, under the effect of current, a part can from before blocking and climbing under the dirty ridge and enter turbine-generator units trash rack for water inlet.Another part of dirt is in suspended state in current, and pass under water, their movement is arranged by flow velocity and fluidised form.Due to during unit normal power generation before water inlet flow velocity maximum, dirt moves after entering forebay immediately before trash rack for water inlet.Wherein bamboo wood, branch, pasture and water etc. are attracted on grizzly bar along with entering grid current, mutually entwine on top, grid face, make rapidly power station trashrack be blocked by dirt, not only make unit output greatly decline, and trashrack and water inlet also there will be certain vibration simultaneously.When blocking serious, a trashrack just must be cleared up in left and right every three days under normal circumstances.Rainstorm weather, because the dirt entering trashrack is many especially, almost cleaning every day once.Under extreme case, power station is forced to use dam upper cantilever crane and lifts by crane trashrack under moving water state, and by artificial rake except adsorbing the dirt be wrapped on grid face.Carry trashrack remove contamination period, trashrack bottom dirt often can have no stop enter water inlet.Little dirt flows through the hydraulic turbine and drains into downstream from draft tube, but large round log and tree root often by jam between fixing guide vane and movable guide vane, water turbine shear pin is cut off, and unit can not orderly closedown, is forced to the process of upper gate maintenance down.And fixing guide vane and movable guide vane are by foreign body from blocking, easily cause fluidised form in runner uneven, make unit generation irregular oscillation and abnormal sound.The normal power generation that above-mentioned situation has all had a strong impact on unit is run.

Conventional hydropower station is problem of removing contamination before solution dam, working method that general employing is manually removed contamination or trash rake is removed contamination.Manually remove contamination as personnel carry out dirt salvage on dirt-removing ship; labour intensity is large, operating environment is severe; easily there is personnel's heatstroke and drowning incident in long-time operation at sea; operating efficiency is not high yet; and must carry out in compressor emergency shutdown situation; indirectly add hydropower station loss, reduce power station economic benefit.Trash rake working method of removing contamination has comprehensive performance of removing contamination, can under various operating mode safety, reliably carry out, but device trash rake need consider hydroulic sturcture structure, size, space layout etc., engineering construction investment and risk larger.

Utility model content

For solving the problems of the technologies described above, the utility model provides a kind of plant without storage flexible trash block system, and concrete technical scheme is as follows:

The flexible trash block system in a kind of plant without storage, comprises motor, A.C. contactor and button, also comprises n root steel bracket, n >=2, m root wire rope, m >=3, nylon wire, electric winch and pulley, wherein, described wire rope is arranged on the pulley of steel bracket, and nylon wire arranged by wire rope, electric winch connecting steel wire ropes, motor, A.C. contactor are electrically connected with electric winch.。

Further, described steel bracket is divided into two-layer up and down, and the identical bolt hole of x spacing is beaten, 7≤x≤15 with within the scope of 1 meter, lower floor upper end in lower end, upper strata.

Further, upper and lower two of described wire rope is connected with electric winch by the pulley be fixed on steel bracket, and middle steel cable is fixed between steel bracket.

The beneficial effect of technique scheme of the present utility model is as follows:

The utility model structure is simple, and civil engineering is few, does not change dam hydraulic structure original structure, is convenient to field conduct; Remove contamination in turbine-generator units not shutdown situation simultaneously, especially better for interception results such as pasture and water, branch, stalk, bamboo wood, reduce shutdown and to remove contamination power generation loss, add power station economic benefit; The personnel that have also been changed drag for careless clean-up operation mode on the water surface, and reduction personnel remove contamination workload before dam, ensure that personal safety; Easy operation easy to use, maintenance and repair can be carried out in conjunction with unit annual overhaul, and construction investment is lower, and economy is suitable for again.Execute-in-place simple and convenient, the problem that labour intensity is large, security risk is large of manually removing contamination before effectively solving dam.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the annexation schematic diagram of the utility model electric winch, wire rope and pulley;

Fig. 3 is the utility model steel bracket annexation schematic diagram.

Detailed description of the invention

Below in conjunction with accompanying drawing, principle of the present utility model and feature are described.

Select the relatively little place of a span in front left right bank phytal zone, dam, plant without storage, be arranged vertically two steel brackets 1.As shown in Figure 3, steel bracket 1 is divided into two-layer up and down, 10 φ 18 bolts hole are opened every uniform distances within the scope of lower end, upper strata and lower floor's upper end length one meter, by bolt, upper and lower for steel bracket 1 layer is connected firmly, ensure that steel bracket 1 can adjust height within the scope of one meter by connecting different bolts hole, meet run-off river power station upper pond level when changing within the scope of one meter, nylon wire 3 can effectively tackle dirt before dam.After steel bracket 1 lower end fixation, 2 pulleys 5 arranged by every root steel bracket 1, pulley 5 height and between the upper and lower distance need be determined according to upstream water level scope and nylon wire size Selection, and the general distance water surface is about 50cm.

On two steel brackets 1, in selection, a wire rope 2 is fixed in lower sheave 5 centre position, and auxiliary nylon wire 3 is located.On dam, front bank and steel bracket 1 opposite position construct platform install an electric winch 4, upper and lower two wire rope of steel bracket are connected in electric winch 4 by pulley 5, are arranged on by nylon wire 3 after on wire rope 2 wire rope 2 end is fixing on electric winch.At an electric winch 4 other installation motor, the speed of the wire rope 2 that stretches by set of gears gear control electric winch 4, shrink.Motor, through certain electric loop, realizes motor break-in by A.C. contactor and button, controls hoist engine 4 and stretches or shrink wire rope 2.

As shown in Figure 2, upper and lower wire rope is a rope, is gone in ring arrange by pulley 5.Nylon wire 3 upper end is fixed on wire rope 2, lower wire rope and remaining wire rope 2 play auxiliary positioning effect, prevent from nylon wire in receipts network process from twining to stir, pass through after hoist engine work counterclockwise or rotate clockwise, drive wire rope 2 thus drive nylon wire 3 to move.

After Installation and Debugging complete, only need human users's contactor and button, just can realize hoist engine and drive wire rope 2, by soil transfer on nylon wire 3 to river bank, carry out labor cleaning.Clear up rear operation contactor and button, wire rope 2 has been returned to intercepting position.

The above is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (3)

1. the flexible trash block system in plant without storage, comprise motor, A.C. contactor, it is characterized in that, also comprise n root steel bracket (1), n >=2, m root wire rope (2), m >=3, nylon wire (3), electric winch (4) and pulley (5), wherein

Described wire rope (2) is arranged on the pulley (5) of steel bracket (1), wire rope (2) is arranged nylon wire (3), electric winch (4) connecting steel wire ropes (2), motor, A.C. contactor are electrically connected with electric winch (4).

2. the flexible trash block system in plant without storage as claimed in claim 1, is characterized in that: described steel bracket (1) is divided into two-layer up and down, and the identical bolt hole of x spacing is beaten, 7≤x≤15 with within the scope of 1 meter, lower floor upper end in lower end, upper strata.

3. the flexible trash block system in plant without storage as claimed in claim 1, it is characterized in that: upper and lower two of described wire rope (2) is connected with electric winch (4) by the pulley (5) be fixed on steel bracket (1), and middle steel cable (2) is fixed between steel bracket.