Assembly with a tube locking device, and associated maintenance method

Patent metadata

Field	Value
Publication number	US-2016180978-A1
Application number	US-201414902680-A
Country	US
Kind code	A1
Filing date	Jul 1, 2014
Priority date	Jul 1, 2013
Publication date	Jun 23, 2016
Grant date	—

Abstract

An assembly is provided that includes a device for locking tubes in position relative to one another, with at least a first arm, a locking axle having a plurality of bearing surfaces, the locking axle being movable between a position locking the tubes each between one of said bearing surfaces and the first arm, and a released position, in which the tube segments are free.

First claim

What is claimed is:

1 - 13 . (canceled)

14 . An assembly comprising:
a plurality of tubes having respective segments substantially parallel to one another; a locking device for locking the tubes in position relative to one another, the device including:
at least one first arm;
a locking axle having a plurality of bearing surfaces; and
a link connecting the locking axle to the first arm, the locking axle being movable relative to the first arm between a locking position, in which the segments of the tubes are each pinched between one of said bearing surfaces and the first arm, and a released position, in which the segments of the tubes are free relative to the first arm.

15 . The assembly as recited in claim 14 wherein the locking device comprises a second arm parallel to the first arm and connected to the first arm, and, in the locking position of the locking axle, the segments of a first set of the tubes are pinched between the first arm and the locking axle, and the segments of a second set of the tubes are pinched between the second arm and the locking axle.

16 . The assembly as recited in claim 14 wherein the link of the locking axle to the first arm is a pivot link around a pivot axis.

17 . The assembly as recited in claim 16 wherein the locking axle and the first arm have elongated shapes along the pivot axis, the locking axle extending along the pivot axis.

18 . The assembly as recited in claim 14 wherein the locking axle comprises a deformable hollow sleeve defining the bearing surfaces and a lever engaged inside the sleeve, the lever being movable relative to the sleeve between a first position in which the bearing surfaces are in retracted positions relatively further from the first arm, and a second position in which the bearing surfaces are in protruding positions relatively closer to the arm.

19 . The assembly as recited in claim 14 wherein at a first end, the locking axle has a relief provided to cooperate with a tool for rotating the locking axle.

20 . The assembly as recited in claim 14 wherein the bearing surfaces are depressions hollowed along the locking axle.

21 . The assembly as recited in claim 14 wherein the locking axle is crimped on the first arm in the locking position.

22 . The assembly as recited in claim 14 wherein the first arm and the locking axle define a rectilinear aperture therebetween in which the tube segments are received, the first arm bearing a wall closing a first end of said aperture and defining a bearing for guiding the rotation of the locking axle.

23 . The assembly as recited in claim 22 wherein the first arm and the locking axle pinch the tube segments positioned therebetween in a pinching direction, the locking device having, at a second end of the aperture opposite the first, a removable link connecting the locking axle to the first arm preventing a mutual separation between the locking axle and the first arm in the pinching direction in the locking position of the locking axle.

24 . The assembly as recited in claim 23 wherein the removable link closes the aperture at a second end thereof in the locking position of the locking axle and frees the second end in the released position of the locking axle.

25 . The assembly as recited in claim 14 wherein the tubes are thermocouple pipes of a nuclear reactor.

26 . A maintenance method for the assembly as recited in claim 14 , the method comprising:
placing the locking axle of the locking device in the released position; removing the locking device; performing maintenance on the defective tube; engaging the tube segments between the locking axle and the first arm of the locking device; and placing the locking axle in the locking position.

Assignees

• Areva Np

Inventors

• Parize Christophe
• Cahouet Laurent

Classifications

• F16L3/2235

  each pipe being supported by a common element fastened to the base · CPC title

• F16L41/001

  the wall being a pipe plate · CPC title

• G21C7/36

  Control circuits · CPC title

• G21C17/116

  Passages or insulators, e.g. for electric cables · CPC title

• G21C17/112 Primary

  Measuring temperature · CPC title