Doosan Heavy Industries and Construction

Changwon, South Korea

Doosan Heavy Industries and Construction

Changwon, South Korea
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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: 2017-02-08

Disclosed herein is a fixture for buckets (200n) for a turbine. The fixture includes a rotor wheel (100) that includes a plurality of dovetail grooves (110). A platform seat is formed between the dovetail grooves (110) and provided with a first insertion groove (122) in a circumferential direction. A bucket (200n) includes a root that inserts into one of the dovetail grooves (110). A base platform (205) disposed on an upper surface of the root (120) includes a second insertion groove (201) at a position facing the first insertion groove (122). A first fixture (300) is inserted into an internal area defined by the first and second insertion grooves (122, 201). A second fixture (400) is inserted into the internal area defined by the first groove and the second insertion groove (201) of a final bucket (200n) to fix the final bucket (200n) among buckets mounted on the rotor wheel (100). An auxiliary fixture (500) is inserted into an opening hole (203) formed in the base platform (205) of the final bucket (200n) and facing the second fixture (400).


Patent
Doosan Heavy Industries and Construction | Date: 2017-02-22

A gas turbine blade has a trench part of a film cooling unit for cooling a blade part that is formed at a tip of a film cooling hole part. As a result, cooling efficiency of the blade can be improved since the blade part is sufficiently cooled even during introduction of a large amount of cooling air, durability of the blade can be increased by inhibiting the blade from being damaged due to hot gas since the trench part is formed to have a minimum width, and efficiency of a gas turbine can be increased by an improvement in film efficiency.


Patent
Doosan Heavy Industries and Construction | Date: 2017-04-05

A gas turbine disk assembly includes a rotor (2) and a tie-bolt (50). The rotor (2) includes a plurality of blades (22) and a plurality of disks (210). The plurality of blades (22) is disposed on outer circumferential surfaces of the plurality of disks (120). The tie-bolt (50) is disposed along a center axis of the rotor (2) and through a bore (70) defined through hollow portions of the plurality of disks (210), so as to couple the plurality of disks (210) to each other. A diameter of the bore (70) is larger than a diameter of the tie-bolt (50). The plurality of disks (210) respectively include a groove (71) spaced from the bore (70) in the circumferential direction of the bore (70), the groove (71) being elongated in the axial direction of the bore (70) such that cooling air flows through an internal space thereof.


An apparatus for evaporative concentration of water, containing hardness-causing substances, to be treated using hot lime softening, includes: a first evaporator configured to form first concentrated water from the water to be treated by evaporatively concentrating the water by first heat exchange with hot steam; a hot lime softener configured to precipitate and to separate hardness-causing substances contained in the first concentrated water from at least a portion of the first concentrated water from the first evaporator by reaction with lime and configured to remove the hardness-causing substances from the first concentrated water; and a second evaporator configured to form second concentrated water by further evaporatively concentrating at least a portion of the first concentrated water that passed through the hot lime softener by second heat exchange with hot steam.


Patent
Doosan Heavy Industries and Construction | Date: 2017-03-01

The present disclosure relate to a rotor assembly having an improved cooling path. To provide a rotor assembly in which the structure of a cooling path formed in a coil turn is improved and a problem of an imbalance in heat transfer of the coil turn can be overcome, a rotor assembly is proposed, comprising: a plurality of coil turns (150) each comprising a plurality of conductors (152) stacked in a multilayer structure, each of the coil turns (150) including: a linear part (154) interposed between teeth (112) of a rotor body (110), with a plurality of ducts (150a) formed in a longitudinal direction through the linear part (154) so that cooling fluid flows through the ducts (150a); and a curved part (156) extending from the linear part (154) and disposed in an arc shape on an outer circumferential surface of a spindle (130); and a turn insulator (170) interposed between the conductors (152), configured to insulate the conductors (152) from each other, wherein the curved part (156) includes a wave-shaped cooling path (158) formed in a longitudinal direction in a planar surface thereof and configured to communicate with the ducts (150a), the cooling path (158) guiding the cooling fluid to the ducts (150a).


Patent
Doosan Heavy Industries and Construction | Date: 2017-09-20

Disclosed herein is a blade transport vehicle which includes a base, a blade fixing frame disposed on the base, a first moving device disposed at an upper end of the base to move the blade fixing frame in a longitudinal direction of the base, and a second moving device disposed at an upper end of the first moving device to move the blade fixing frame in a width direction of the base. According to the present invention, it is possible to stably position a blade on the transport vehicle by changing the position of the blade in all directions.

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