Machine for cutting nozzles of reactor vessels
AssigneeDoosan Heavy Industries Construction Co., Ltd
InventorsKwang Soo Park, Hae Woong Kim
Life of this patent
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Abstract
Disclosed herein is a machine for cutting nozzles of reactor vessels. The machine for cutting nozzles of reactor vessels comprises a cutting unit positioned at an upper surface edge of a reactor vessel having a nozzle and having a saw blade part having different contact areas to cut the nozzle, a drive unit providing the saw blade part with rotary power, and a foreign substance suction unit provided at one end of the cutting unit in contiguity with the saw blade part to suck foreign substances generated when the nozzle is cut by the saw blade part, wherein the foreign substance suction unit sucks the foreign substances by approaching an outer peripheral surface of the nozzle when the saw blade part moves in a cutting direction of the nozzle.
Claims17
A machine for cutting nozzles of reactor vessels, the machine comprising:
- a cutting unit positioned at an upper surface edge of a reactor vessel having a nozzle extending from a nozzle surface of the reactor vessel,
- wherein the cutting unit includes a first frame supported on an upper surface of the reactor vessel, a second frame connected to the first frame and disposed beyond the nozzle surface in an axial direction, and a third frame coupled to the second frame and disposed beyond the second frame in the axial direction, and
- wherein the third frame is configured to be movable with respect to the second frame in the cutting direction of the nozzle and includes an opening formed between a lower end of each of two opposing parts of the third frame, the opening configured to receive an insertion of the nozzle when the third frame moves toward the nozzle;
- a drive unit providing a saw blade assembly with rotary power;
- a first motor disposed outside a support bracket;
- a rotary power converter receiving rotary power generated in the first motor to convert the rotary power into a rectilinear reciprocating motion;
- a foreign substance suction unit provided at one end of the cutting unit in contiguity with the saw blade assembly to suck foreign substances generated when the nozzle is cut by the saw blade assembly, the foreign substance suction unit comprises a foreign substance suction pipe connected to the rotary power converter and moving toward the nozzle by forward or reverse rotation of the first motor;
- an outer cover partially enclosing the foreign substance suction pipe;
- and
- wherein the foreign substance suction unit sucks the foreign substances by approaching an outer peripheral surface of the nozzle when the saw blade assembly moves in a cutting direction of the nozzle,
- wherein the foreign substance suction unit is connected through the support bracket disposed at the lower end of the third frame with respect to a front thereof.
A machine for cutting nozzles of reactor vessels, the machine comprising:
- a cutting unit positioned at an upper surface edge of a reactor vessel having a nozzle extending from a nozzle surface of the reactor vessel,
- wherein the cutting unit includes a first frame supported on an upper surface of the reactor vessel, a second frame connected to the first frame and disposed beyond the nozzle surface in an axial direction, and a third frame coupled to the second frame and disposed beyond the second frame in the axial direction, and
- wherein the third frame is configured to be movable with respect to the second frame in a cutting direction of the nozzle and includes an opening formed between a lower end of each of two opposing parts of the third frame, the opening configured to receive an insertion of the nozzle when the third frame moves toward the nozzle;
- a drive unit providing a saw blade assembly with rotary power;
- a first motor disposed outside a support bracket;
- a rotary power converter receiving rotary power generated in the first motor to convert the rotary power into a rectilinear reciprocating motion;
- a foreign substance suction unit provided at one end of the cutting unit in contiguity with the saw blade assembly to suck foreign substances generated when the nozzle is cut by the saw blade assembly, the foreign substance suction unit comprises a foreign substance suction pipe connected to the rotary power converter and moving toward the nozzle by forward or reverse rotation of the first motor;
- and
- an outer cover partially enclosing the foreign substance suction pipe;
- a controller controlling a distance between the foreign substance suction unit and the nozzle such that the foreign substance suction unit approaches an outer peripheral surface of the nozzle to suck the foreign substances when the saw blade assembly moves in a cutting direction of the nozzle, wherein the foreign substance suction unit is connected through the support bracket disposed at the lower end of the third frame with respect to the front thereof.
Dependencies are inferred from the claim text.