Waste heat boiler

Patent metadata

Field	Value
Publication number	US-10907822-B2
Application number	US-201615550927-A
Country	US
Kind code	B2
Filing date	Feb 6, 2016
Priority date	Feb 12, 2015
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

The present provides a waste heat boiler and a hammering device, a heating tube mounting structure thereof. The waste heat boiler which a boiler, heating tubes provided in the boiler and a hammering device; the boiler is provided with an exhaust gas inlet and an exhaust gas outlet; the heating tubes are in a horizontal grid tube arrangement; a surface of the heating tubes is provided with fins, and the heating tubes are connected to support assemblies in an unfixed way.

First claim

The invention claimed is:

1. A waste heat boiler comprising:
a boiler having an exhaust gas inlet and an exhaust gas outlet; and
a plurality of heating tubes disposed in the boiler, the plurality of heating tubes being disposed within a plurality of support assemblies such that the plurality of heating tubes are supported by the plurality of support assemblies without being affixed to the plurality of support assemblies and are configured to move freely relative to the plurality of support assemblies, the plurality of support assemblies including:
a plurality of support rings corresponding to respective heating tubes of the plurality of heating tubes, each heating tube of the plurality of heating tubes being disposed within a hole of a corresponding support ring of the plurality of support rings, and
a plurality of support beams only disposed below all of the support rings with respect to a vertical direction of the boiler, the plurality of support beams being configured to maintain the plurality of support rings in a fixed position,
wherein a gap between an outer peripheral surface of each heating tube and an inner peripheral surface of the corresponding to a respective support ring is configured to allow the heating tube and the support ring to move relative to each other.

2. The waste heat boiler according to claim 1 , wherein the plurality of support assemblies are arranged in an axial direction of the plurality of heating tubes at an interval.

3. The waste heat boiler according to claim 1 , further comprising a plurality of fins disposed on an outer peripheral surface of each heating tube of the plurality of heating tubes.

4. The waste heat boiler according to claim 3 , wherein:
the plurality of heating tubes are horizontally arranged,
the plurality of fins protrude perpendicularly from the outer peripheral surface of each heating tube of the plurality of heating tubes and radially protrude outwards along the entire peripheral surface of the outer peripheral surface of each heating tube of the plurality of heating tubes, and
the plurality of fins (i) are disposed in an axial direction of each heating tube of the plurality of heating tubes, or (ii) are spiral in shape.

5. The waste heat boiler according to claim 1 , wherein:
the plurality of heating tubes are vertically arranged with respect to the boiler,
the plurality of fins protrude perpendicularly from an outer peripheral surface of each heating tube of the plurality of heating tubes and protrude in an axial direction of each heating tube, and
the plurality of fins (i) are discontinuous in the axial direction, or (ii) are spiral in shape.

6. The waste heat boiler according to claim 4 , wherein:
the plurality of heating tubes are in a grid tube arrangement,
each set of heating tubes of the plurality of heating tubes adjacent to each other in a same vertical plane forms a heat transfer assembly of a plurality of heat transfer assemblies, and
the waste heat boiler further comprises a plurality of hammering devices, each hammering device of the plurality of hammering devices corresponding to the heat transfer assemblies of the plurality of heat transfer assemblies.

7. The waste heat boiler according to claim 6 , wherein:
each hammering device includes (i) a hammering rod connected to each of the heat transfer assemblies, and (ii) a hammering assembly configured to rap the hammering rod; and
the hammering assembly of each hammering device includes a hammering shaft, a hammer fixed to the hammering shaft, and a driving motor connected to the hammering shaft and configured to control the hammering shaft for a reciprocating rotation.

8. The waste heat boiler according to claim 7 , wherein the hammer corresponds to an end portion or a lateral side of the hammering rod.

9. The waste heat boiler according to claim 1 , further comprising a soot blowing device.

10. The waste heat boiler according to claim 9 , wherein:
the soot blowing device includes an air station, a connecting pipe, and a plurality of element pipes, the plurality of element pipes are horizontally arranged and disposed above the plurality of heating tubes, an axis of each element pipe of the plurality of element pipes is perpendicular to an axis of the heating tube, and each element pipe of the plurality of element pipes is connected to a lance tube;
one end of the lance tube is connected to a control device configured to drive the lance tube to protrude forward or retract backward, the control device including a motor connected to a mating gear;
a lower portion of each element pipe of the plurality of element pipes is provided with a plurality of gas injection holes corresponding to each of the heating tubes;
a first end of the lance tube passes through a wall of the boiler and extends outside of the boiler, the first end of the lance tube having a screw;
the mating gear is meshed with the screw of the lance tube; and
a rotation direction of the mating gear is different than a rotation direction of the motor, such that the protruding and retracting of the lance tube is controlled.

11. The waste heat boiler according to claim 3 , wherein:
the plurality of heating tubes are in a grid tube arrangement,
each set of heating tubes of the plurality of heating tubes adjacent to each other in a same vertical plane forms a heat transfer assembly of a plurality of heat transfer assemblies, the plurality of heat transfer assemblies are arranged in parallel relative to a vertical direction, and
the waste heat boiler further comprises a plurality of hammering devices, a hammering device of the plurality of hammering devices being configured to rap a heat transfer assembly of the plurality of heat transfer assemblies.

12. The waste heat boiler according to claim 5 , further comprising a hammering device configured to rap a hammering rod connected to each heat transfer assembly of the plurality of heat transfer assemblies, the hammering device including a hammering shaft, a hammer fixed to the hammering shaft, and a driving motor connected to the hammering shaft and configured to control the hammering shaft with a reciprocating rotation.

13. The waste heat boiler according to claim 7 , wherein the hammer is configured to rap an end portion or a lateral side of the hammering rod.

14. A waste heat boiler comprising:
a boiler having an exhaust gas inlet and an exhaust gas outlet; and
a plurality of heating tubes disposed in the boiler, a surface of each heating tube of the plurality of heating tubes having a plurality of fins, the plurality of heating tubes being disposed within a plurality of support assemblies such that the plurality of heating tubes are supported by the plurality of support assemblies without being affixed to the plurality of support assemblies and are configured to move freely relative to the plurality of support assemblies, the plurality of support assemblies including:
a plurality of support rings corresponding to respective heating tubes of the plurality of heating tubes, each heating tube of the plurality of heating tubes being disposed within a hole of a corresponding support ring of the plurality of support rings, and
a plurality of support beams only disposed below all of the support rings with respect to a vertical direction of the boiler, the plurality of support beams being configured to maintain the plurality of support rings in a fixed position,
wherein a gap between an outer peripheral surface of each heating tube and an inner peripheral surface of the corresponding to a respective support ring is configured to allow the heating tube and the support ring to move relative to

Assignees

• Anhui Conch Kawasaki Engineering Company Ltd
• Kawasaki Heavy Ind Ltd
• Anhui Conch Kawasaki Energy Conservation Equipment Mfg Company Limited

Inventors

• Takenaka Yukihiro
• Zhao Fengwa
• Kao Chuanli
• Ino Tatsuo
• Zhao Mihan
• Nozoe Takuro
• Zhang Hao
• Wang Xiaobing
• Wang Ning
• Xiao Jieyu
• Fang Wei
• Liu Dazhu
• Zhou Jian

Classifications

• F22B37/101 Primary

  Tubes having fins or ribs · CPC title

• F28G1/08

  having scrapers, hammers, or cutters, e.g. rigidly mounted · CPC title

• F28F9/013

  for tubes or tube-assemblies · CPC title

• F28G15/02

  Supports for cleaning appliances, e.g. frames · CPC title

• F28G15/04

  Feeding and driving arrangements, e.g. power operation · CPC title