Bergemann

Veag Vereinigte Energiewerke Aktiengesellschaft

Wilfried Boden

Karsten Kleye

Frank-Dieter Kahle

Reinhard Sommer

Lothar Franzke

An elongated element, for example, a soot blower for the cleaning of wall surfaces, is guided along a predetermined, meandrical blow figure. The element is supported in two spaced-apart cardanic joints (3, 4) the first of which is stationary and the second axially moveable on a first spindle (6) the ends of which are axially moveable on two parallel second spindles (8). The first and one of the second spindles (6, 8) are each provided with two non-mechanical, inductive proximity switches or end switches (11-14) which are connected with a controller (16) having a memory and being programmable. The end switches (13, 14) detect a reference point in horizontal and vertical directions, and two end switches (11, 12) detect the rotations of the spindles (6, 8) as a measure of the distance travelled by the second cardanic joint (4). The impulses of the end switches (11, 12) which are proportional to the distance travelled are compared in the controller (16) with the preselected blow figure and the spindles (6, 8) are controlled according to the blow figure.

Process for the guiding of an elongated element

An elongated element, for example, a soot blower for the cleaning of wall surfaces, is guided along a predetermined, meandrical blow figure. The element is supported in two spaced-apart cardanic joints (3, 4) the first of which is stationary and the second axially moveable on a first spindle (6) the ends of which are axially moveable on two parallel second spindles (8). The first and one of the second spindles (6, 8) are each provided with two non-mechanical, inductive proximity switches or end switches (11-14) which are connected with a controller (16) having a memory and being programmable. The end switches (13, 14) detect a reference point in horizontal and vertical directions, and two end switches (11, 12) detect the rotations of the spindles (6, 8) as a measure of the distance travelled by the second cardanic joint (4). The impulses of the end switches.(11, 12) which are proportional to the distance travelled are compared in the controller (16) with the preselected blow figure and the spindles (6, 8) are controlled according to the blow figure.

Apparatus for the guiding of an elongated element

A steam generator with a water lance sprayer for cleaning a surface of a heat exchangers of the steam generator, and more particularly combustion-chamber heat-transfer surfaces in steam boilers, can have an outlet opening swivel-type supported in the wall of the steam generator and its rear parts swivel-type suspended. Such a lance blower is provided with a polydirectional movability in a plane at the outlet opening of the water lance blower without contamination to ensure that the jet meeting the opposite boiler wall describes an exactly defined course. This is done by providing a flange at the outlet opening of the blowpipe, which flange can be attached to a segment of a cardan joint with the cardan joint being fastened in the combustion-chamber wall. The rear part of the blowpipe is preferably arranged in a guide, which guide is vertically shiftable on a vertical spindle, with the vertical spindle being shiftable, at the top and at the bottom thereof, horizontally on a horizontal spindle, and with the guide being formed by a housing that is non-rotatably positioned on the vertical spindle. The guide preferably carries a fork-shaped accommodation containing a cardan-shaped cage which internally is designed as a sleeve for holding the blowpipe in an axially shiftable manner.

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Stradow, Germany

Wilfried Boden