FR2634273A1 - COATING BRICK FOR COMBUSTION CHAMBER WALL - Google Patents

Abstract

Lining brick of refractory ceramic material for a combustion chamber wall, comprising in particular cooling tubes, individually and easily exchangeable while being held securely in its wall assembly. For this purpose, the lower front face 9 and the upper front face 8 of the brick 4 are oblique with respect to the rear surface 6. A support surface 11 associated with a support element 5 of the wall 1 extends perpendicular to the rear surface 6.

Description

COATING BRICK FOR COMBUSTION CHAMBER WALL

  The invention relates to a covering brick made of refractory ceramic material for a combustion chamber wall comprising in particular cooling tubes, a recess having a bearing face being formed on the rear surface of said brick oriented towards the wall, this recess allowing the brick to be mounted on a support element fixed to the wall, the front faces of each brick fixed to the wall being placed opposite the front faces of an adjacent brick. Such a facing brick has been described in document EP-O 228 818 Ai. In it, the front faces extend perpendicular to the surface. The support elements of the wall extend obliquely upwards. The recesses are made in a corresponding manner. The oblique welding of the wall of the support elements is problematic. If the support elements do not develop at the same angle as the recesses, this has the effect of adversely affecting the support or of causing a non-conformity between the recesses and the

supporting elements.

  In addition, the object described in document EP-O 228 918 A1 has the other disadvantage that the bricks cannot be exchanged in isolation when they are mounted on the wall. If you want to remove a brick from the assembly made or insert one, it will also be necessary to remove the placed bricks

immediately above.

  The object of the invention is to provide a facing brick of the type mentioned in the introduction which can be exchanged in isolation, in a simple manner, while being firmly held in the assembly & the wall. According to the invention, this problem is solved, for a brick of the type mentioned in the introduction, by the fact that the upper front face and the lower front face of the brick extend obliquely with respect to the rear surface of said brick. brick and that the bearing surface extends perpendicular to the rear face of

said brick.

  By the oblique position of the front faces, the brick, in its assembled position, is secured against displacements perpendicular to the wall by the presence of respectively adjacent bricks. It is possible to remove the brick individually from the assembly or to insert it into it by moving it according to the

  direction of the oblique front faces.

  Since the bearing face extends perpendicularly

  on the rear surface, the recess is simple to perform.

  It is unnecessary to weld the support element in a

oblique position on the wall.

  Advantageous aspects of the invention emerge from

  the following description of an exemplary embodiment. The

  figure represents a facing brick in a

  wall assembly, seen in vertical section.

  A wall 1. of a combustion chamber has vertical tubes 2 of diameter D. Between the tubes 2 extend wall elements 3 planes, on which a

  support element 5 is welded for each brick 4.

  The support element 5 consists of a rod whose cross section is T-shaped. The brick 4 has a rear surface 6. Its front surface 7 parallel to the rear face 6, is oriented towards the interior space of the combustion chamber. The brick 4 is provided with an upper front face 8 and with a lower front face 9. The two front faces 8, 9 are parallel to each other and extend obliquely with respect to the rear surface 6 respectively the front surface 7. The upper front face 8 forms an obtuse angle with the rear surface 6. The lower front face 9 forms an acute angle with the rear surface 6. Consequently, the upper front face 8 forms an acute angle with the front surface 7 and the lower front face 9 forms an obtuse angle with

the front surface 7.

  On the rear surface 6 the brick 4 has a recess 10. This is provided with a bearing face 11 which extends perpendicular to the surface 6 and which is applied to the T-shaped front side of the support element 5. The recess 10 is open on the side of the lower front face 9. The width - perpendicular to the plane of the figure - of the recess 10, corresponds to the width of the bar 12 of the T of l support element 5. By the width of application of the support face 11 on the T-shaped front side of the support element 5, it is obtained that a single support element 5 is sufficient for avoid everything

brick tilting 4.

  The depth of the recess 10 is dimensioned so that, when its bottom 13 parallel to the surface 6 is applied to the bar 12 of the T, a slot 14 remains between the wall 1 and the rear surface 6, the slot being able to be filled with putty. The recess 10 also and the joints 15 remaining between two adjacent bricks

  4 can be filled with putty.

  During assembly of the assembly, the bricks 4 are

  placed by their support face 11 on the support element 5.

  Since the recess 10 extends continuously up to the lower front face 9, it is easy to adjust the brick 4 relative to the support element 5 so that the recess 10 coincides with the support element 5. For this purpose, the brick 4 is placed with its lower front face 9 above the support element 5 and then lowered until the support surface 11 rests on the support element 5. The brick 4 is then secured - against

  tilting by the support element 5.

  It is impossible for the brick 4 to detach from its wall assembly along the arrow P, since its lower front face 9 would then meet the upper front face 8 of the adjacent lower brick. Brick 4 is therefore blocked against any movement along the arrow

  P inside its wall assembly.

  If you want to change the brick 4, you remove it from its wall assembly in the direction of arrow A which is parallel to the upper front face 8 and to the lower front face 9. This does not interfere with the adjacent adjacent brick or the adjacent lower brick 4. In the opposite direction, it is possible to insert a new brick 4 in the wall assembly. Any unexpected movement of the brick 4 in the direction of the arrow A is impossible because this movement contains a directional component opposite to

the force of gravity.

2,634.73

Claims (5)

  1. Brick facing in refractory ceramic material   shutter for a combustion chamber wall comprising in particular cooling tubes, a recess having a bearing face being formed on the rear surface of said brick oriented towards the wall, this recess making it possible to mount the brick on a fixed support element on the wall, the front faces of each brick fixed to the wall being placed opposite the front faces of an adjacent brick, characterized in that the upper front face and the lower front face (8, 9) of the brick (4) extend obliquely with respect to the rear surface (6) of said brick (4) and that the bearing surface (11) extends perpendicular to the rear face (6) of said brick (4).   2. Facing brick according to claim 1, characterized in that the two end faces   (8, 9) extend parallel to each other.   3. facing brick according to claim 1 or 2, characterized in that the upper front surface (8) forms an obtuse angle with the rear face (6) and that the lower front face (9) forms a   acute angle with the rear face (6).   4. Facing brick according to any one   of the preceding claims. characterized by   causes the recess (10) to be open on the front lower (9).   5. Facing brick according to any one   of the preceding claims, characterized by   fact that the recess (10) has a bottom (13) intended to bear on the bar (12) of the T of a T-shaped support element (5) and that the bearing surface (11) is designed to come to rest on the front side of the T-shaped support element (5)