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Patent
Doosan Heavy Industries and Construction | Date: 2017-05-03

The present disclosure relates to a dissolved air flotation system using ambient air, and more particularly, to a dissolved air flotation system that is capable of allowing ambient air to be introduced in front of a pump to generate micro air bubbles with the water discharged from the pump, so that the ambient air may be used instead of compressed air.


Patent
Doosan Heavy Industries and Construction | Date: 2017-04-26

A sealing assembly for a turbine includes a first sealing member (20) which is disposed on a fixed body (10) of the turbine, and a second sealing member (40) which is disposed on a rotating body (30) of the turbine at a position facing the first sealing member (20). The first sealing member (20) and the second sealing member (40) may come into point contact with each other and prevent leakage of fluid. At least one of the first and second sealing members (20, 40) includes a tooth (23, 43) wound around the sealing body (21, 41) a plurality of times and disposed in a spiral shape. The second sealing member (40) may further comprise a protrusion (50) provided on the second sealing body (41) and disposed to be interlocked with the second tooth (43).


Patent
Doosan Heavy Industries and Construction | Date: 2017-04-26

A sealing assembly includes a first sealing member disposed on a fixed body and a second sealing member disposed on a rotating body while facing the first sealing member, such that when the second sealing member rotates, the first sealing member and the second sealing member work in conjunction with each other to generate flow of fluid in a reverse direction and form a fluid barrier, thereby preventing leakage of the fluid.


Patent
Doosan Heavy Industries and Construction | Date: 2017-04-26

Disclosed herein is a water purifying system, including: a raw water tank configured to store raw water; a filter unit configured to include a plurality of filtration modules for purifying the raw water and a plurality of valves for feeding or cutting off the raw water; a raw water pump configured to feed the raw water from the raw water tank to the filter unit; and a backwash module configured to feed backwash water to the filter unit, in which some of permeate water permeated by the filter unit is fed to the backwash module to be used as the backwash water and a feed pressure of the backwash water is fed by the raw water pump.


Patent
Doosan Heavy Industries and Construction | Date: 2017-05-17

Disclosed herein is a condenser tube cleaning apparatus. The condenser tube cleaning apparatus can stably circulate and collect a large number of cleaning balls to efficiently remove foreign substances accumulated in a condenser unit.


Patent
Doosan Heavy Industries and Construction | Date: 2017-05-17

A static mixer for mixing exhaust gases (10, 20) to be supplied to a selective catalytic reduction device located at the back of a boiler, includes a gas accommodation part (100, 200) having a first inlet (110) and a plurality of second inlets (210) partitioned from each other to introduce gases (10, 20) having different temperatures thereinto so that the gases (10, 20) introduced through the first inlet (110) and the plurality of second inlets (210) flow to a plurality of divided sections. A discharge part (300) is provided that communicates with the gas accommodation part (100, 200) to collect and discharge the gases (10, 20), and a mixing plate part (400) is provided, which has a plurality of unit plates (411, 412) disposed on the upper and lower portions of a hollow portion of the discharge part (300) in such a manner as to have a given angle with respect to the directions of the gases (10, 20) discharged.


Patent
Doosan Heavy Industries and Construction | Date: 2017-05-17

An apparatus for controlling a wind power generator unit includes a deviation detection unit (100) to detect an angular deviation between windward and a current rotation direction of a nacelle (2) after a wind power generator is installed so as to face the windward, and a control unit (200) to receive data detected by the deviation detection unit (100) and to control a brake state and a yawing state of a yaw brake unit (50), wherein when the nacelle (2) rotates out of a preset deviation range, the control unit (100) temporarily releases frictional force of a brake pad (20) coming into close contact with a disk (10) so as to control a brake operation state of the yaw brake unit (50).


Patent
Doosan Heavy Industries and Construction | Date: 2017-05-17

An apparatus for diagnosing abnormal operation of a rotor. The apparatus includes a first sensor provided around a shaft in order to detect vibration occurring while the shaft provided in a rotor axially rotates, a second sensor to generate a periodic pulse signal over time whenever the shaft rotates once, and a controller to determine an operation state of the rotor by receiving signals detected by the first and second sensors. When an aperiodic pulse signal is detected in the rotor, the controller determines a position of the rotor at which the aperiodic pulse signal is generated, and a display indicates the position of the rotor in which the aperiodic pulse signal is generated, according to information calculated by the controller.


Patent
Doosan Heavy Industries and Construction | Date: 2017-06-28

The present disclosure relates to a method for predicting a slagging production position and a slagging production possibility in a furnace, the method including: the analyzing step of analyzing physical compositions of two or more kinds of coal; the phase diagram producing step of producing a phase diagram on the basis of the physical components of the two or more kinds of coal analyzed in the analyzing step; the deriving step of simulating the situation generated when the two or more kinds of coal are co-fired on the basis of the produced phase diagram; and the characteristic analyzing step of analyzing the characteristics in the furnace in the co-firing process of the two or more kinds of coal.


Patent
Doosan Heavy Industries and Construction | Date: 2017-06-28

The present invention relates to a sealing structure for a turbine, comprising a rotary body having an annular shape, a recessed portion being defined around the rotary body, an annular packing body disposed in a coupling groove of a stationary body, a support member disposed at a central portion of the packing body, a brush seal, a first end of the brush seal being coupled to the support member and a second end of the brush seal being is disposed in the recessed portion; and a tooth portion disposed in at least one side of the packing body.

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