On-line automatic cleaning device for a condenser in a turbine generator
A device and method to perform on-line automatic flushing and cleaning for a steam turbine generator condenser, related with technology for flushing and cleaning of equipment during steam turbine generator operation, the apparatus includes: a polar coordinate traveling mechanical system, including one computer program polar coordinate control unit, which will control the servo motors to position the high-pressure water jet on the opening for Copper tube (or Titanium tube); the benefit for the invention is that, the polar coordinate traveling mechanical system move the high-pressure water jet to flush and clean each Copper tube (or Titanium tube) on condenser tube plate, to realize high-pressure water cleaning for each pipe during operation of generator, therefore, the heat exchanging efficient can be increased, further to reduce the consumption of coal for steam turbine generator, and archive the aim to saving coal, and reduction in generating cost.
1. An on-line automatic flushing and cleaning apparatus for a condenser in a turbine generator comprising:
a high speed water jet position in the condenser to reach each copper tube or titanium tube across a tube plate in the condenser;
a longitudinal moveable extension support beam positioned in the condenser, the water jet mounted at one end of the support beam;
a rotatable movable rotating support beam positioned in the condenser and mounted at the other end of the extension support beam, the extension support beam longitudinally movable from the rotating support beam;
a computer programmed polar coordinating unit, positioned outside the condenser, that converts a rectangular coordinate position (x, y) of each tube of the tube plate of the condenser in the turbine generator into a polar coordinate position (R, f) and outputs a control signal in polar coordinates;
an angle rotating control motor, positioned outside the condenser, that receives the control signal from the coordinating unit in polar coordinates and rotates the rotating support beam based on the polar coordinates by means of a related transmission and an rotating driving shaft which is connected at one end of the angle rotating control motor and at the other end to the rotating support beam;
a radius moving control motor positioned outside the condenser, that receives the control signal from the coordinating unit in polar coordinates, and longitudinally moves, in a radial direction, the extension support beam by means of a related transmission and an extension driving shaft which is connected at one end to the radius moving control motor and at the other end to the extension support beam such that the water jet moves directly from polar coordinates calculated for each tube by the coordinating unit and the apparatus works in turbulent water flow conditions so that the flushing and cleaning occurs while the condenser is on-line.
2. The apparatus of claim 1 , wherein said computer program polar coordinate control unit is combined with a computer and a programmable logic controller (PLC).
3. The apparatus of claim 1 , wherein said angle rotating control motor and radius moving control motor are of servo motors.
4. The apparatus of claim 1 , wherein said rotating driving shaft and extension driving shaft form a sleeve with an external shaft and an inner shaft, in which the external shaft is the rotating driving shaft, and the inner shaft is the extension driving shaft.
5. The apparatus of claim 4 , wherein said rotating driving shaft and extension driving shaft are connected with bearings.
6. The apparatus of claim 4 , wherein one end of said sleeve goes through a condenser plate and is mounted on the condenser plate; another end of said sleeve is supported by a condenser shell with an intermediate bearing support.
7. The apparatus of claim 4 , wherein on the other end of the said extension driving shaft, there is a transmission structure to drive the extension supporting beam to move in a radius direction of said rotating support beam.
8. The apparatus of claim 7 , wherein said transmission structure at the other end of the extension driving shaft is of a gear and rack structure, the gear is installed on the extension driving shaft, and the rack is installed on an inner sleeve on the extension supporting beam, the connection between said inner sleeve and an external sleeve can be a sliding track, or a sliding block and channel.
9. The apparatus of claim 8 , wherein the related transmission of said angle rotating control motor is a rotating transmission shaft with a transmission structure, and the rotating transmission shaft drives the rotating support beam to rotate for positioning of an angle, with the extension support beam, the high-pressure water jet on the inner sleeve can be positioned in a right angle for openings of each copper tube or titanium tube on a surface of the tube plate in the condenser.
10. The apparatus of claim 1 , wherein the said angle rotating control motor and related transmission structure, the radial moving control motor and related transmission structure are mounted on the condenser plate by a fixing mean.
11. The apparatus of claim 1 , wherein said radius moving control motor drives the extension transmission shaft with a transmission structure and the extension transmission shaft drives the extension support beam to move along the radius direction of the rotating support beam for positioning a desired radius, then the high-pressure water jet on the extension support beam can be positioned in a right radius for openings of each copper tube or titanium tube on the surface of the tube plate in condenser.
12. A method to perform on-line flushing and cleaning of steam turbine generator condenser, comprising the steps of:
calculating and transferring a rectangle coordinate position (X, Y) into a polar coordinate position (R,f) by a computer program polar coordinate control unit located outside the condenser;
dispatching polar coordination parameters including an angle positioning parameter and a radius parameter to compatible programmable logic controller (PLC);
controlling a servo motor directly by said PLC using said polar coordination parameters, in which, the angle position parameter is used to position an angle through an angle moving control motor located outside the condenser for driving a rotating support beam, while the radius parameter is used to position a radius by a radius moving control motor located outside the condenser driving an extension support beam; then
locating a high-pressure water jet inside the condenser on an end of an extension support beam to an opening of a copper tube or titanium tube at said radius and angle;
turning on the high pressure water jet so that the water jet can automatically move forward to contact closely with the opening to perform the flushing and cleaning; and
repeating above steps one by one so that other copper tube or titanium tube in the condenser can be selected and cleaned.