Heating furnace for heating annular component

Patent metadata

Field	Value
Publication number	US-2019003771-A1
Application number	US-201715744621-A
Country	US
Kind code	A1
Filing date	Jun 15, 2017
Priority date	Sep 29, 2016
Publication date	Jan 3, 2019
Grant date	—

Abstract

A heating furnace for heating an annular component, includes a furnace body, a heat medium driving component, a support part, a guide component, and a hollow cylinder. Part of the heat medium is ejected to the outer circumferential surface of the annular component through the guide part, and part of the heat medium flows through the inner channel of the hollow cylinder, and be ejected to the inner circumferential surface of the bearing via the second heat medium channel arranged on the hollow cylinder to heat the inner circumferential surface of the bearing. In this way, the hollow cylinder plays a role of distributing the gas to some extent, and as the upper end of the hollow cylinder is a sealed structure, the flowing gas is all converted into effective heat exchange gas flow and restricted to a heat exchange space on the bearing surface.

First claim

1 . A heating furnace for heating an annular component, comprising:
a furnace body, wherein the furnace body encloses a sealed heating space, and the furnace body is equipped with a heat medium driving component and a support part for the annular component, and an interior of the furnace body further comprises: a guide part, comprising a top plate and an annular guide plate extending vertically downward from the circumference of the top plate, wherein the top plate and the annular guide plate together with respective inner walls of the furnace body form heat medium channels, the top plate has a backflow through hole at a position opposite to the heat medium driving component, the annular guide plate is mounted on the periphery of the annular component and has a number of first heat medium channels which are extended radially, each of which faces exactly to an outer circumferential surface of the annular component. a hollow cylinder, which is arranged in the annular component, and a circumferential space is preset between the hollow cylinder and the annular component, an upper end surface of the hollow cylinder is of a sealed structure, a lower edge of an inner circumferential surface of the annular component and an outer circumferential wall of the hollow cylinder form a sealed structure, and an inner chamber of the hollow cylinder is communicated with the heat medium channels formed by the annular guide plate and a bottom wall of the furnace body, the hollow cylinder has second heat medium channels which are extended radially, and each of the second heat medium channels is opposite to the inner circumferential surface of the annular component.

2 . The heating furnace according to claim 1 , wherein, the support part comprises a holder and a support platform, the support platform is supported on a bottom wall of the furnace body via the holder, the annular component and the hollow cylinder are both supported on an upper surface of the support platform, a lower surface of the annular guide plate and the lower surface of the hollow cylinder are both bonded and sealed circumferentially with the support platform, the heat medium channels formed by the support platform and the bottom wall of the furnace body are communicated with the inner chamber of the hollow cylinder via an interior of the support platform.

3 . The heating furnace according to claim 2 , wherein the support platform is provided with through holes at positions corresponding to the inner chamber of the hollow cylinder, the heat medium channel formed by the support platform and the bottom wall of the furnace body is communicated with the inner chamber of the hollow cylinder via the through holes on the support platform.

4 . The heating furnace according to claim 2 , wherein, from the bottom up, the hollow cylinder comprises a support section, a distributing section and a top section, and the second medium channels are at least set on the circumferential wall of the distributing section, a bottom of the support section and the support platform are circumferentially contacted and sealed, the top section has a top lid, and the top lid is a sealed structure.

5 . The heating furnace according to claim 4 , wherein, the support section comprises an annular base, horizontal feet are arranged uniformly in a circumferential direction of the outer edge of the annular base, the annular component is supported on the horizontal feet, and the upper surfaces of the support feet are provided with a positioning component fitting with the annular component for positioning.

6 . The heating furnace according to claim 5 , wherein, the positioning component is a spigot, in the case that the annular component is mounted on the horizontal feet, the inner circumferential surface of the annular component abuts against an outer wall of at least one spigot.

7 . The heating furnace according to claim 6 , wherein, a position of the spigot on a corresponding horizontal foot is adjustable in a radial direction.

8 . The heating furnace according to claim 5 , wherein, a taking out seat is arranged in the annular base, the taking out seat is provided with a screw hole or a screw bolt, and the taking out seat is connected to an inner surface of the annular base via holders.

9 . The heating furnace according to claim 5 , wherein, from the top down, an inner hole of the annular base comprises a large diameter section and a small diameter section, the large diameter section and the small diameter section are connected by a stepped surface, a lower end of the distributing section is a fitting section, an outer diameter of the fitting section is larger than an inner diameter of the small diameter section but smaller than an inner diameter of the large diameter section, the fitting section is mounted in the large diameter section and supported on the stepped surface during assembly.

10 . The heating furnace according to claim 4 , wherein, the distributing section is provided with radially extended rectifying sheets around the inlet and outlet of each second thermal heat medium channel, each of the rectifying pieces enclose an inner rectifying channel and an outer rectifying channel relatively, the heat medium in the hollow cylinder is ejected to the inner circumferential surface of the annular component via the inner rectifying channel, a corresponding second heat medium channel and the outer rectifying channel in a listed sequence.

11 . The heating furnace according to claim 10 , wherein, the distributing section comprises a cylinder body, and the cylinder body is provided with a plurality of annular rectifying sheets arranged in parallel and a plurality of vertical rectifying sheets arranged in parallel, each of the annular rectifying sheets and the vertical rectifying sheets divides the inner surface and the outer surface of the cylinder body into a plurality of grid structures, each of the second heat medium channels is arranged on the cylinder body, and corresponds to the center of the grid structure, and an end located in the cylinder body of each annular rectifying piece is a guide arc which is bent downward.

12 . The heating furnace according to claim 10 , wherein, an outer diameter of the top lid is larger than an outer diameter of each of the rectifying sheets of the distributing section, and an outer edge of the top lid is a downward bending section.

13 . The heating furnace according to claim 4 , wherein, among the three of the top section, the support section and the distributing section, at least the top section and the other two are of a separate structure, the support section and the distributing section are of a group, there are at least two groups, and each group is stacked sequentially from the bottom up, each annular component is supported on the corresponding support section respectively, and one top section is provided, the top section is buckled to the upper part of the top group of the distributing section.

14 . The heating furnace according to claim 13 , wherein, the three of the top section, the support section and the distributing section are of separated structure.

15 . The heating furnace according to claim 4 , wherein, one of the lower surface of the support section and the upper surface of the support platform is provided with a convex step, and the other is provided with a groove fitting with the convex step.

16 . The heating furnace according to claim 1 , wherein, a plurality of first heating components are arranged uniformly in the heat medium channel formed by the annular guide plate and the circumferential surface of the furnace body, and a plurality

Assignees

• Beijing Goldwind Science & Creation Windpower Equipment Co Ltd

Inventors

• Ma Shengjun

Classifications

• F27B1/10

  Details, accessories or equipment specially adapted for furnaces of these types · CPC title

• F27D2007/045

  Fans · CPC title

• F27D7/04 Primary

  Circulating atmospheres by mechanical means · CPC title

• B23P11/025

  by using heat or cold · CPC title

• F27B11/00

  Bell-type furnaces · CPC title