CN101449102B

CN101449102B - Combustion grate spanning system

Info

Publication number: CN101449102B
Application number: CN2007800183496A
Authority: CN
Inventors: J·K·奥尔森; E·莫根森
Original assignee: Babcock and Wilcox Volund AS
Current assignee: Babcock and Wilcox Volund AS
Priority date: 2006-03-27
Filing date: 2007-03-27
Publication date: 2010-12-15
Anticipated expiration: 2027-03-27
Also published as: EP2002181A2; KR20080113249A; WO2007110838A3; WO2007110838A2; EP1840463A1; KR101365550B1; JP2009531645A; JP5054757B2; CN101449102A

Abstract

The present invention relates to a spanning system for an incineration or combustion grate in an incineration or combustion plant, said grate comprising a number of juxtaposed grate beams, at least some of which are movable for providing a movement of the fuel on top of said grate. The spanning system comprises a number of spanning units positioned under the grate, each spanning unit comprising two engagement means, each for engaging a grate beam, and force-generating means for providing a stable force pulling the engagement means towards each other, whereby the grate beams between the two engagement means are pulled towards each other. This provides the possibility of a modular system and keeps the necessary forces small.

Description

Combustion grate across system

Technical field

The present invention relates to a kind of be used for burning or the burning of combustion apparatus or combustion grate across system.This stove hedge generally includes a plurality of stove hedge beams arranged side by side, and it is movable so that the motion of the fuel on the stove hedge top to be provided wherein having a part at least.

Background technology

From US5,178, recognize in 128 that this burning and combustion apparatus have the stove hedge that a part can move along the carriage direction of the fuel on the stove hedge top, and by using the hydraulic cylinder that is provided with along stove hedge side to guarantee tight contact between the adjacent stove hedge bar, wherein said hydraulic cylinder is pressed to all stove hedge bars of stove hedge each other.Along with the stove hedge becomes bigger, the active force of this system increases and is necessary for the gap increase that contingent expansion is reserved, thereby causes particulate might enter between the stove hedge bar, produces wearing and tearing in the side of stove hedge bar then.

US5,377,663 show a kind of be used for burning or the burning of combustion apparatus or combustion grate across system, described stove hedge comprises a plurality of stove hedge beams arranged side by side, it is movable so that the motion of the fuel on the described stove hedge top to be provided wherein having a part at least, described across system comprise a plurality of be located at stove hedge below across the unit, each comprises across the unit: two engagement devices, its each be used to engage stove hedge beam; And the active force generation device that is used to provide stabilization power, described active force spurs engagement device toward each other, thereby the stove hedge beam between two engagement devices is spurred toward each other.Yet, thisly be limited to across the stove hedge beam of motion together across system, therefore can not be used to across the stove hedge that wherein has relative motion separately between the stove hedge beam.

Summary of the invention

The purpose of this invention is to provide a kind ofly across system, it has simple structure and is provided at the stabilization power that under the state that temperature changes stove hedge beam is kept together, and this is by described in the invention realizing across system.By this structure,, therefore can not be subjected to the restriction of the relative motion of beam simultaneously across the stove hedge beam in the stove hedge because that the connector between the engagement device can be configured to stove hedge beam is separated by a distance and do not interfere with it.In addition, can modular form realize across system, wherein each crosses over a spot of beam (for example being six roots of sensation beam to the maximum) across the unit, therefore with by known hydraulic system, the required active force that keeps together of all beams in the stove hedge is compared, these beams required active force that keeps together is less relatively.In addition, the active force generation device provides necessary gap for contingent expansion, and particulate can not infiltrate between the independent stove hedge beam simultaneously.

The invention provides a kind of be used for burning or the burning of combustion apparatus or combustion grate across system, described stove hedge comprises a plurality of stove hedge beams arranged side by side, wherein having a part of stove hedge beam at least is movable motion with the fuel on the top that described stove hedge is provided, describedly comprise: be arranged on a plurality of of stove hedge below across the unit across system, each comprises across the unit: two engagement devices, each engagement device is used to engage a stove hedge beam, and the active force generation device that is used to provide stabilization power, described active force spurs engagement device toward each other, thereby the stove hedge beam between two engagement devices is spurred toward each other, it is characterized in that: each comprises across the unit: two mobile jibs, it at one end has described engagement device, and with the engagement device different distance place that is separated by, first and second distance bars that between mobile jib, link to each other, described first distance bar comprises distance that is used to regulate between the mobile jib and the adjusting device of therefore regulating the distance between the engagement device, and described second distance bar provides the fixing substantially distance between two mobile jibs.

Should will be conspicuous for the those skilled in the art that read following detailed description across the preferred embodiment and the advantage thereof of system, and obtain in the dependent claims describing.

Description of drawings

In the following detailed description part of this specification, will explain in more detail the present invention with reference to the exemplary embodiment across system according to the present invention illustrated in the accompanying drawings, in the accompanying drawings:

Fig. 1 schematically shows the cross-sectional view of combustion grate, wherein be provided with according to a preferred embodiment of the invention across system;

Fig. 2 schematically shows the stove hedge cross section in a longitudinal direction of Fig. 1;

Fig. 3 schematically shows the details across the unit according to a preferred embodiment of the invention.

The specific embodiment

Comprise a plurality of stove hedge beams with the combustion grate shown in the cross-sectional view in Fig. 1, it extends along the moving direction of the fuel on the stove hedge top, and is configured to movable stove hedge beam that replaces 1 ' and stationary furnace hedge beam 1 on crisscross.Comprise two mobile jibs 3,4 that cardinal principle is vertical across unit 2, described mobile jib is provided with the engagement device that is used to engage stationary furnace hedge beam 1 in the upper end.First distance bar 5 is connected between the mobile jib 3,4, and described first distance bar 5 is provided with screw and nut 8 so that can be in the distance between two mobile jibs 3,4 of mobile jib lower end adjusting.On the centre position between first distance bar and the engagement device, second distance bar 6 is connected between two mobile jibs 3,4, described connector between second distance bar 6 and two mobile jibs 3,4 comprises spring assembly 7, and described spring assembly 7 is preferably the form of the Belleville spring that is located at the tube interior of fixedlying connected with mobile jib 3,4.Second distance bar 6 is therefore as pull bar, it spurs two mobile jibs 3,4 toward each other, therefore the engagement device that links to each other with stationary furnace hedge beam 1 spurs stove hedge beam toward each other, remains in stove hedge bar 1 between these two engagement devices, 1 ' the tight contact of side surface along them thus.As the replacement of spring assembly 7, can make mobile jib with spring steel, thereby for the flexible of necessity is provided across active force.

The banking motion that connector between first, second distance bar 5,6 and the mobile jib 3,4 allows mobile jib 3,4 to carry out to a certain degree, therefore can stove hedge below will be assemblied in the following manner across unit 2, that is: unclamp nut 8 and increase distance between the engagement device, thereby they are engaged with stationary furnace hedge beam 1, and fastening nut 8 is until a certain default span that obtains spring assembly 7 then.As an alternative, described assembling can become easy by one of distance bar being set as in the form with two parts of assembling after stove hedge beam engages.

As shown in Figure 1, can have different size shown in 2 ' across unit 2, across unit 2 ' have with across unit 2 identical functions and parts, but be provided with shorter distance bar 5 ', 6 ', therefore across the stationary furnace hedge beam 1 of unit 2 ' across lesser amt.Influence for the stove hedge screening reject protecting screw on first distance bar 5 and the distance bar 5 ' not to be subjected to fall down by the stove hedge; be provided with cover plate 9 on mobile jib 3,4, its screw that covers at least on described first distance bar 5 and the distance bar 5 ' is normally used during use that part of.Similarly the cover plate (not shown) can be provided and be used for protecting second distance bar 6 and the distance bar 6 '.

As shown in Figure 2, provide two, wherein on the end of stationary furnace hedge beam 1, respectively had one, stove hedge beam has been pressed to each other active force so that distribute across unit 2.In the case of necessary, can use plural this for this each group stove hedge beam of crossing over simultaneously across system across the unit.In addition, Fig. 2 schematically shows the travel mechanism that is used for moving movable stove hedge beam, and it comprises walking beam 10 and the cylinder 11 that only schematically shows, and shows the pipeline 12 of the cooling water that is used for recirculated water black furnace hedge.

Fig. 3 shows mobile jib 3 and about the details of engagement device, described engagement device comprises: stopper 13, its be used for engaging be located at stove hedge beam the hole mobile jib 3 is remained on correct position with respect to described stove hedge beam; And comprising composition surface 14, it is used for and will gives stove hedge beam across force transmission.

Fig. 3 also shows the details of the connector of form between second distance bar 6 and mobile jib 3, pipe 15, in pipe 15, around second distance bar 6 the Belleville disc spring is set, and described disc spring is compressed between the base plate 16 of nut on second distance bar 6 and described pipe 15, and described base plate 16 is provided with the hole that second distance bar 6 is run through.

Hereinbefore, invention has been described about specific embodiment as shown in drawings, yet those skilled in the art can imagine under the situation that does not break away from following claim and multiple improvement.

Claims

One kind be used for burning or the burning of combustion apparatus or combustion grate across system, described stove hedge comprises a plurality of stove hedge beams arranged side by side, wherein having a part of stove hedge beam at least is movable motion with the fuel on the top that described stove hedge is provided, and describedly comprises across system:

-being arranged on a plurality of of stove hedge below across the unit, each comprises across the unit:

Two engagement devices, each engagement device are used to engage a stove hedge beam, and

Be used to provide the active force generation device of stabilization power, described active force spurs engagement device toward each other, thereby the stove hedge beam between two engagement devices is spurred toward each other,

It is characterized in that: each comprises across the unit:

-two mobile jibs, it at one end has described engagement device, and

-at first and second distance bars of being separated by the different distance place, between mobile jib, linking to each other with engagement device, described first distance bar comprises distance that is used to regulate between the mobile jib and the adjusting device of therefore regulating the distance between the engagement device, and described second distance bar provides the fixing substantially distance between two mobile jibs.
2. as claimed in claim 1 across system, it is characterized in that: described engagement device comprises composition surface and engages stopper that described joint stopper is used for respect to engaged stove hedge beam engagement device being remained on the fixed position.
3. as claimed in claim 1 or 2 across system, it is characterized in that: described engagement device engages stationary furnace hedge beam, and is provided with at least one movable stove hedge beam between by each two stationary furnace hedge beam that engage across two engagement devices of unit.
4. as claimed in claim 1 across system, it is characterized in that: described adjusting device comprises screw, and described screw joint nut is to regulate distance and/or the active force between the engagement device.
5. as claimed in claim 1 across system, it is characterized in that: provide the active force generation device by the mobile jib of making by spring steel.
6. as claimed in claim 1 across system, it is characterized in that: provide the active force generation device by second distance bar that links to each other with mobile jib by at least one spring.
7. as claimed in claim 1 across system, it is characterized in that: described adjustable distance bar is arranged on the end relative with engagement device of two mobile jibs.
8. as claimed in claim 1 across system, it is characterized in that: the space between described engagement device, first distance bar and second distance bar is apart from approximately equal.