US 11,162,675 B2Granted

Supporting beam arrangement for supporting a flue gas duct

AssigneeValmet Technologies Oy

InventorsTero Heino, Juha Ojanperä

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Abstract

A supporting beam arrangement (14) for supporting a flue gas duct (10) to a support frame (16) of the flue gas duct. The supporting beam arrangement comprises two horizontal first supporting beams (18) that are parallel and on two opposite sides of the flue gas duct (10) and separated by a distance from the flue gas duct, and further are connected to the support frame (16). The supporting beam arrangement (14) comprises a horizontal second supporting beam (20) defining two opposite ends (22) that are supported to the first supporting beams (18), the second supporting beam extending through the flue gas duct (10) that is supported to the second supporting beam. At least one or each one of the first supporting beams comprises an opening (24), in which opening one of the two opposite ends (22) of the second supporting beam is placed to rest on the first supporting beam (18). A power boiler (50) comprises the supporting beam arrangement (14), the flue gas duct (10) and the support frame (16).

Claims21

Dependent claims

A supporting beam arrangement for supporting a flue gas duct configured to convey flue gases, the supporting beam arrangement being configured to support the flue gas duct to a support frame of the flue gas duct, the supporting beam arrangement comprising:

two substantially horizontal first supporting beams that are substantially parallel and situated on two opposite sides of the flue gas duct, the first supporting beams being separated by a distance from the flue gas duct, and the first supporting beams including two opposite ends that are connected to the support frame;
and
a substantially horizontal second supporting beam defining two opposite ends that are supported by the first supporting beams, the second supporting beam extending through the flue gas duct in such a way that the second supporting beam is exposed to flue gases, wherein the flue gas duct is supported by the second supporting beam,
wherein:
at least one or each one of the first supporting beams comprises an opening, in which opening one of the two opposite ends of the second supporting beam is placed to rest on the first supporting beam in such a way that loads incurred by the weight of the flue gas duct are transmitted to the first supporting beam;
the second supporting beam comprises:
a middle section horizontally extending within the flue gas duct, the middle section defining a substantially horizontal top surface, and
two end sections, each end section horizontally extending outside the flue gas duct between the flue gas duct and one of the first supporting beams, each end section defining a substantially horizontal top surface;
and
the middle section and the end sections define a stepped shape in such a way that at least one or each one of the top surfaces of the end sections is at a height lower than the top surface of the middle section.

7 more elements

A power boiler comprising a supporting beam arrangement, a flue gas duct, and a support frame of the flue gas duct, wherein the supporting beam arrangement is configured to support the flue gas duct which is adapted to convey flue gases, the supporting beam arrangement being further configured to support the flue gas duct to the support frame of the flue gas duct, the supporting beam arrangement comprising:

two substantially horizontal first supporting beams that are substantially parallel and situated on two opposite sides of the flue gas duct, the first supporting beams being separated by a distance from the flue gas duct, and the first supporting beams including two opposite ends that are connected to the support frame;
and
a substantially horizontal second supporting beam defining two opposite ends that are supported by the first supporting beams, the second supporting beam extending through the flue gas duct in such a way that the second supporting beam is exposed to flue gases, wherein the flue gas duct is supported by the second supporting beam;
wherein:
at least one or each one of the first supporting beams comprises an opening, in which opening one of the two opposite ends of the second supporting beam is placed to rest on the first supporting beam in such a way that loads incurred by the weight of the flue gas duct are transmitted to the first supporting beam;
and
the first supporting beam is one of:
an I-beam, including upper and lower flanges that are parallel, extend in a longitudinal direction of the beam, and are connected by a web extending in the longitudinal direction, wherein the opening is formed to the web of the beam, underneath the upper flange and above the lower flange,
a H-beam, including upper and lower flanges that are parallel, extend in a longitudinal direction of the beam, and are connected by a web extending in the longitudinal direction, wherein the opening is formed to the web of the beam, underneath the upper flange and above the lower flange, or
a box beam including upper and lower walls that are parallel, extend in a longitudinal direction of the beam and are connected by two or more side walls extending in the longitudinal direction, wherein the opening is formed to at least one of the side walls or all side walls, underneath the upper wall and above the lower wall.

7 more elements

two substantially horizontal first supporting beams that are substantially parallel and situated on two opposite sides of the flue gas duct, the first supporting beams being separated by a distance from the flue gas duct, and the first supporting beams including two opposite ends that are connected to the support frame;
and
a substantially horizontal second supporting beam defining two opposite ends that are supported by the first supporting beams, the second supporting beam extending through the flue gas duct in such a way that the second supporting beam is exposed to flue gases, wherein the flue gas duct is supported by the second supporting beam,
wherein:
at least one or each one of the first supporting beams comprises an opening, in which opening one of the two opposite ends of the second supporting beam is placed to rest on the first supporting beam in such a way that loads incurred by the weight of the flue gas duct are transmitted to the first supporting beam;
and
the first supporting beam is one of:
an I-beam, including upper and lower flanges that are parallel, extend in a longitudinal direction of the beam, and are connected by a web extending in the longitudinal direction, wherein the opening is formed to the web of the beam, underneath the upper flange and above the lower flange,
a H-beam, including upper and lower flanges that are parallel, extend in a longitudinal direction of the beam, and are connected by a web extending in the longitudinal direction, wherein the opening is formed to the web of the beam, underneath the upper flange and above the lower flange, or
a box beam including upper and lower walls that are parallel, extend in a longitudinal direction of the beam and are connected by two or more side walls extending in the longitudinal direction, wherein the opening is formed to at least one of the side walls or all side walls, underneath the upper wall and above the lower wall.

7 more elements

two substantially horizontal first supporting beams that are substantially parallel and situated on two opposite sides of the flue gas duct, the first supporting beams being separated by a distance from the flue gas duct, and the first supporting beams including two opposite ends that are connected to the support frame;
and
a substantially horizontal second supporting beam defining two opposite ends that are supported by the first supporting beams, the second supporting beam extending through the flue gas duct in such a way that the second supporting beam is exposed to flue gases, wherein the flue gas duct is supported by the second supporting beam,
wherein:
at least one or each one of the first supporting beams comprises an opening, in which opening one of the two opposite ends of the second supporting beam is placed to rest on the first supporting beam in such a way that loads incurred by the weight of the flue gas duct are transmitted to the first supporting beam;
the second supporting beam includes two end sections, each end section horizontally extending outside the flue gas duct between the flue gas duct and one of the first supporting beams, at least one or each one of the end sections defining a substantially horizontal top surface located at a second height;
and
the first supporting beam defines a substantially horizontal top surface at a first height, the second height being less than the first height.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/859,240Filed 27 Apr 2020
Priority: FI 2019549010 Jun 2019
Published: US 2020/0386399 A110 Dec 2020
Granted: 2 Nov 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

F22B 37/24
Applicable to more than one kind or type of steam boiler: supporting, suspending or setting arrangements, e.g. heat shielding
F22B 31/0084
With combustion in a fluidized bed: with recirculation of separated solids or with cooling of the bed particles outside the combustion bed
F22B 37/001
Component parts or details of steam boilers: steam generators built-up from pre-fabricated elements
F22B 37/201
Supporting arrangements, e.g. for securing water-tube sets: suspension and securing arrangements for walls built-up from tubes