KR850007859A - Eddy Current Positioning Device - Google Patents

Abstract

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Description

External position setting device

As this is a public information case, the full text was not included.

1 is a horizontal cross-sectional view taken from the top of a steam generator having tubes arranged in a square pitch arrangement while illustrating fluid lances installed in a lancing position, incorporating nozzles fabricated accordingly to implement the features of the present invention;

FIG. 2 is an enlarged partial view of a vertical sectional view taken along the line 2-2 of FIG. 1, in which part thereof is broken in order to explain the structure more clearly.

3 is an enlarged fragmentary view of a portion of FIG. 1 having a lance nozzle with an outlet orifice for use with a square pitch tube arrangement.

* Explanation of symbols for the main parts of the drawings

(13): Tube plate, (15): Tube bundle, (40): Fluid lance, (42): Mounting plate, (60): Nozzle, (70): Positioning device, (71): Support block, (80) : Spacer, (90): Detection mechanism, (101): Power supply.

Claims (19)

In the steam generator having multiple vertical pipes, the pipes are arranged in horizontal rows and horizontal rows, and at the same time, the pipes in each column are spaced apart from each other in adjacent columns, and the steam generator vertical pipes have axes arranged in a common column plane. 6. An apparatus for accurately positioning a vortex comprising: a vortex sensing means having a conveying means for moving a component through a column of adjacent tubes in a direction perpendicular to the common plane and a sensing shaft supported on the component and arranged horizontally on the common plane And wherein the sensing means generates an output signal which changes as a function of the distance between the sensing axis and the tube closest to the vortex position setting device. 2. The vortex position setting device according to claim 1, wherein the flow sensing means is cylindrical and the sensing shaft is a cylindrical shaft. The vortex positioning device according to claim 1, further comprising installation means for firmly installing said sensing means in a component. The vortex position setting device according to claim 1, wherein the sensing means is installed on an upper part of the component. 2. The vortex position setting device according to claim 1, further comprising control means connected to said sensing means for receiving and displaying an output signal with an operating power source. 2. The apparatus of claim 1, wherein the conveying means moves the sensing means in a path parallel to and parallel to the tube of the nearest column, the output signal being maximum when the sensing axis is coplanar with a common plane of one of the tubes of the nearest column. And the amplitude varies between them so that the sensing axis is at a minimum amplitude when the sensing axis is midway between the common planes of two adjacent tubes of the nearest column. 7. The vortex position setting device according to claim 6, wherein said output signal resulting from continuous movement of said sensing means passing through said passageway is a substantially sinusoidal wave. 2. The thermal plane of claim 1, wherein the component comprises a fluid lance nozzle having a fluid outlet orifice and at the same time arranged to release fluid flow parallel to the thermal plane, wherein the triangular means is adapted to generate a predetermined output signal level. And the orifice is arranged such that the fluid flow passes between adjacent rows when the sensing axis is arranged in the lancing position, wherein the orifice is responsive to the placement of the sensing axis relative to one of the lancing positions. 9. A vortex positioning device according to claim 8, wherein said nozzle comprises a plurality of outlet orifices. 10. The vortex positioning device according to claim 9, wherein at least two of the orifices are respectively disposed on opposite sides of the sensing axis to discharge the flow of fluid in the same direction in parallel with the axis. 12. The sensing plane of claim 10, wherein the sensing axis lies in a sensing plane parallel to the thermal plane, wherein one of the two nozzles is spaced from the sensing plane by one-half of the distance between common planes of the crowded welds of the closest row. And the other one of the two nozzles is spaced apart from the sensing plane by a distance equal to an integer multiple of the distance between the common planes of the ducts in close proximity to each other. 9. The mounting plate according to claim 8, wherein the lance nozzle comprises a tubular member having the fluid outlet orifice, a support bracket installed on the mounting plate, and a vortex detector having a sensing shaft, wherein the device is supported by the tubular member. And the sensor is supported by the support bracket at an installation position with the sensing shaft disposed parallel to the thermal plane. 13. The vortex position setting device according to claim 12, wherein said tubular member has a flat plate to which said mounting plate is fixed. 13. The eddy current positioning device according to claim 12, wherein said sensing is provided on an upper portion of said tubular member. 13. The vortex positioning device according to claim 12, comprising spacer means made of a nonmagnetic electrically insulating material disposed between the detector and the support bracket. 13. The method of claim 12, wherein the support bracket consists of a generally cup-shaped member having a cylindrical sidewall with an axis disposed on the sensing axis, wherein the sensor is cylindrical and capable of receiving the support bracket coaxially. Vortex position setting device characterized in that. 7. The vortex positioning device according to claim 6, comprising a generally cup-shaped spacer with a cylindrical sidewall disposed between said support bracket and said detector in engagement. 18. The vortex positioning device according to claim 17, wherein the detector is fixed to the spacer and the spacer is firmly fixed to the support bracket. 13. The vortex positioning device according to claim 12, wherein the tubular members each have two fluid outlet orifices disposed on opposite sides of the sensing axis to discharge the flow of fluid in the same direction in parallel with the sensing axis. . ※ Note: The disclosure is based on the initial application.