EP0032962A1 - Dispositif d'actionnement d'un souffleur de suie - Google Patents

Dispositif d'actionnement d'un souffleur de suie Download PDF

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Publication number
EP0032962A1
EP0032962A1 EP19800100384 EP80100384A EP0032962A1 EP 0032962 A1 EP0032962 A1 EP 0032962A1 EP 19800100384 EP19800100384 EP 19800100384 EP 80100384 A EP80100384 A EP 80100384A EP 0032962 A1 EP0032962 A1 EP 0032962A1
Authority
EP
European Patent Office
Prior art keywords
lance
furnace
casing
feed tube
carriage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19800100384
Other languages
German (de)
English (en)
Other versions
EP0032962B1 (fr
Inventor
Robert Patton Sullivan
Clyde Lewis Jacobs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Combustion Engineering Inc
Original Assignee
Combustion Engineering Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Combustion Engineering Inc filed Critical Combustion Engineering Inc
Priority to DE8080100384T priority Critical patent/DE3067599D1/de
Priority to EP19800100384 priority patent/EP0032962B1/fr
Publication of EP0032962A1 publication Critical patent/EP0032962A1/fr
Application granted granted Critical
Publication of EP0032962B1 publication Critical patent/EP0032962B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers

Definitions

  • the oresent invention relates to the connection between motive means and the lance of a soot blower with which the lance is rotated and reciprocated in carrying out its function of cleaning furnace tubes with a spray of steam, or other cleaning fluid. More specifically, the present invention relates to rotation of a lance of square cross section and reciprocation of the lance as the lance is connected to a carriage within a housing, the reciprocation motivated through a rack on the housing and a pinion on the carriage.
  • the soot blower is a pipe, with a nozzle at its end, inserted into a hole in the wall of the furnace. Steam, or other vapor, is fed into the tube and ejected from its nozzle with great force. Correctly directed, this vapor-belching tube can effectively sheer particulate matter from large areas of the heated surfaces.
  • blowers In the huge, multi-storied utility boiler, it is not uncommon to supply up to 100 soot blowers. Rows of these blowers are poised at their furnace openings, the rows being on the order of vertical 8' centers. Further, the blowers are rolled into the furnace under elaborate programs to sequentially cut at the accumulations on the heating surfaces and maintain the efficiency of heat transfer from the combustion process to the vaporizable liquid behind the heating surfaces.
  • the present invention contemplates the external cross section of a soot blower lance casing, having straight sides engaged by a hole with matching straight sides in a bushing mounted at the furnace wall and rotated by linkage to a motive means.
  • the invention further contemplates a housing for the lance and the carriage to which it is connected which extends backward from the furnace wall in support of the carriage and in formation of a linkage between the motive means and the carriage to provide reciprocation.
  • the invention further contemplates a carriage, and track for the carriage, connected at the rear end of the lance which fully supports the back end of the lance and the feed tube to obviate mechanical stress on the seal between the lance and the feed tube.
  • the end of the lance of the soot blower viewed in Figure 1 will be described as the "front" end. It is the cleaning fluid which is discharged from the nozzles on the front end of the lance which carries out the cleaning of the surfaces in the furnace interior. Looking backward from this nozzle end of the lance, supporting structure at the furnace wall is first analyzed in the first two figures of the drawing. Attention next shifts to the carriage structure to which the rear portion of the lance is attached. This carriage structure is reciprocated toward and away from the furnace interior to carry the lance nozzles over and/or between the furnace surfaces being cleaned.
  • the furnace wall, or that portion of the wall which is penetrated by the lance, is designated 10.
  • the aperture 11 is shown with the lance 12 thrust partway into the furnace interior.
  • the configuration of the external casing of the lance 12 is essentially square and rotates in the position shown in Figure 1. Therefore, aperture 11 is sized to accommodate this rotation without interference.
  • the seal box 13 extends back to scraper plate 14, which plate encompasses the rotating and reciprocating outer surface of lance 12.
  • the seal box structure is a sturdy mount forming a link between the furnace wall and the front end of the lance 12. More specifically, the seal box 13 is connected to a shroud enclosure for the reciprocating carriage of the lance. This connection is illustrated with yoke and bracket 16. Within the shroud housing is mounted, at the front end of the shroud, bearing assembly 15 which is the link between the lance and a motive means disclosed in Figure 2 with which the lance is rotated.
  • Roll bearings 17 are mounted on a guide ring 18 which is captured between eccentric side camrol bearings 19 fixed to bearing assembly 15.
  • Guide ring 18 is rotated in the plurality of bearings 19 and 33 by means of a chain shown in Figure 2 which engages sprocket 20. It is apparent from the drawings of Figures 1 and 2 that the rotation of guide ring 18 results in rotation of roll bearings 17 which completes the direct link with the external surface of the square casing of the lance.
  • the external configuration of lance 12 provides a cross-sectional profile with four flat sides. Roughly, the external shape of the lance can be referred to as square, at least two of the sides of the square at any one time engaged in rolling contact with roll bearings 17.
  • the assembly thus far described is a compact structure which both admits of access to the furnace interior by the lance 12 through aperture 11 while blocking radiant heat about the lance structure and forming a mechanical link with a motive means for rotation of a lance while the lance is reciprocated.
  • Figure 2A discloses details of the scraper plate 14, in its position to block the escape of radiant heat of the furnace through aperture 11.
  • Scraper plate 14 is suspended from guide ring 18, and, therefore, rotates with guide ring 18 and lance 12.
  • Figure 2A discloses guide ring 18 as comprised of four scraper plate segments - 14A, 14B, 14-C and 14-D. An edge of each of the four segments is positioned closely adjacent one side of the lance casing. The four segments fit together in a plane normal the axis of the lance. The four segments, together, as the scraper plate 14, are spaced closely adjacent the rear end of the seal box 13. Positioned in this arrangement about the lance casing, the segments block the escape of radiation from the furnace interior and remove soot and/or slag from the external lance casing 22 as the lance 12 is retracted from the furnace interior.
  • segments 14A - 14D are somewhat precariously held in their positions from guide ring 18. It is true that straps 23A - 23D are relatively elongated members. However, in their actual reduction to practice, they are normally sturdy enough to maintain their segment of the scraper plate in position while retaining flexibility to prevent binding and galling on the reciprocating surface of the external lance casing 22.
  • soot blower classed as a "long, reciprocating" type.
  • feed tube 21 which provides the cleaning fluid ultimately discharged from the lance against internal furnace surfaces.
  • Feed tube 21 must be long enough to maintain communication of its cleaning fluid with the nozzles 24 at the forward end of the casing of the lance while the lance is reciprocated over its range of longitudinal movement.
  • the external lance casing 22 must be effectively sealed near its rear end against the escape of cleaning fluid which has been conducted into the casing. This seal structure is not disclosed in the front end apparatus of Figure 1, the lance and feed tube extending a substantial distance beyond the boundary of Figure 1, as will be shown in subsequent figures.
  • Figure 2 coordinates with Figure 1 by the fact that Figure 2 is a section along lines 2-2 in Figure 1. Therefore, the structure of Figure 2 is viewed as looking into the forward end of the lance or that end extended into the furnace.
  • the bearing assembly 15 is shown as about lance 12 and attached to the front of housing shroud 30. Now the motor 31 is observed in its position to one side of the bearing assembly, rotating the lance through its linkage, including chain 32.
  • the lance is reciprocated within housing shroud 30, retreating and advancing relative to the observer of Figure 2.
  • the structure for holding the lance in this position and reciprocating the lance will be disclosed in other drawings.
  • Figure 2 The purpose of Figure 2 is simply to enlarge upon, and make more specific, the linkage between motor 31 and the lance 12, the train of linkage including chain 32, the sprocket 20, guide ring 18, and roll bearings 17. Some additional orientation is given by showing the shroud 30 about the lance 12.
  • the carrier can be studied as a framework supported on parallel tracks within shroud 30.
  • the tracks 40 and 41 are mounted along the sides of shroud 30.
  • Rollers 42 and 43 engage track 40 and rollers 44 and 45 engage track 41.
  • the carriage framework 46 is suspended while reciprocated the length of shroud 30 with power transmitted through pinion 47 and rack 48.
  • Roller 42A (under roller 42 and track 40) and roller 44A (under roller 44 and track 41) are used for carrier loading while the lance 12 is extended fully into the furnace space.
  • Gear reducer 49 is mounted below pinion 47 and controls both the speed and direction of pinion 47 rotation to reciprocate the lance attached to the carriage framework 46. Additionally, the gear reducer is connected to sprocket 50 which is linked by chain 51 to provide rotation from the lance.
  • the lance of Figures 1 and 2 is connected to the framework of carriage 46 by a sleeved spindle 52.
  • the spindle is fixed to carriage framework 46 so as to extend toward the furnace at the front end.
  • the sleeve receives feed tube 21 as feed tube 21 is connected to a source of cleaning fluid not shown in Figure 3.
  • high temperatures from steam are greatly reduced to enhance the life of the bearings 52A and 52B that allow rotation of sleeved spindle 52.
  • Sleeved spindle 52 specifically carries an axially aligned packing housing 53 on what will be termed its rear end. Feed tube 21 is received through this packing housing 53 and is sealed thereto by the all-important packing structure which prevents the rearward escape of the highly pressured cleaning fluid. Thus, the sleeved spindle and its packing housing form the sliding and rotating link between the lance 12 and the feed tube 21. On the forward end of the sleeved spindle 52, the lance 12 is connected through a high quality connector 54. Therefore, travel of the carriage framework 46 the length of shroud 30 carries the lance into and out of operation within its furnace while receiving high pressure cleaning fluid from feed tube 21.
  • sleeved spindle 52 bears sprocket 55. Obviously, rotation of lance 12 and sleeved spindle 52 will cause rotation of sprocket 55.
  • sprocket 50 is mounted on gear reducer 49. Chain 51 links the two sprockets. Therefore, rotation of lance 12 operates gear reducer 49 which, in turn, rotates pinion 47.
  • carriage framework 46 is reciprocated through engagement of the rack and pinion within housing shroud 30.
  • rotation of lance 12 by motor 31 of Figure 2 brings about reciprocation of the lance into and out of the furnace being serviced.
  • the gear train between the rack and pinion and sleeved spindle 52 can be actuated by another source of power.
  • Shaft 49A is provided into gear reducer 49. Rotational power applied to shaft 49A will both reciprocate and rotate lance 12. This means of rotation and reciprocation is alternate to the normal arrangement applying power from motor 31.
  • Carriage framework 46 reciprocates the longitudinal length of shroud 30. In Figure 4, this reciprocation causes the carriage framework 46 to recede from and advance toward the eye of the viewer of Figure 4. Positive guidance in this reciprocating stroke is insured by a sturdy track between the depending flanges of angles 60 and 61. Nestled between these guides is roller 62 which extends from firm attachment to carriage framework 46.
  • Figure 5 may be classified as a somewhat diagrammatic elevation in the rear end of shroud 30 with the carriage framework 46 near the end of its rear position.
  • the familiar sleeved spindle 52 helps basic orientation in disclosing how feed tube 21 is introduced into connection with the lance through packing housing 53.
  • Valve 70 is indicated as giving basic control to the flow of the cleaning fluid from conduit 71 into feed tube 21.
  • the basic function desired is to flow the cleaning fluid (commonly steam) into the lance from the feed tube 21 in order that the cleaning fluid may be nozzled against the proper interior surfaces of the furnace.
  • the simple end function is complicated by the necessity for reciprocating the lance structure into and out of the furnace while sealed to the external surface of the feed tube. Additionally, rotation of the lance is also desired, putting the seal to further challenge.
  • Rollers 72 and 73 are mounted on extension 74 of carriage framework 46 to bear directly upon feed tube 21 at its entry into packing housing 53 and its contact with the seal structure within the housing. It is apparent that the parallel axes of the rollers are vertically offset from each other as the rollers bear upon the feed tube 21. These rollers may be positioned and adjusted, in their position, to maintain axial alignment between the feed tube 21 and packing housing 53 to isolate the packing from undue mechanical stress.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
EP19800100384 1980-01-25 1980-01-25 Dispositif d'actionnement d'un souffleur de suie Expired EP0032962B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8080100384T DE3067599D1 (en) 1980-01-25 1980-01-25 Actuating mechanism for a soot blower
EP19800100384 EP0032962B1 (fr) 1980-01-25 1980-01-25 Dispositif d'actionnement d'un souffleur de suie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19800100384 EP0032962B1 (fr) 1980-01-25 1980-01-25 Dispositif d'actionnement d'un souffleur de suie

Publications (2)

Publication Number Publication Date
EP0032962A1 true EP0032962A1 (fr) 1981-08-05
EP0032962B1 EP0032962B1 (fr) 1984-04-25

Family

ID=8186579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800100384 Expired EP0032962B1 (fr) 1980-01-25 1980-01-25 Dispositif d'actionnement d'un souffleur de suie

Country Status (2)

Country Link
EP (1) EP0032962B1 (fr)
DE (1) DE3067599D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102350419A (zh) * 2011-08-12 2012-02-15 北京凡元兴科技有限公司 一种炮架式可移动气能吹灰器
CN102494554A (zh) * 2011-12-05 2012-06-13 武汉钢铁(集团)公司 换热器管组外壁机械清灰装置
CN110486739A (zh) * 2019-08-15 2019-11-22 陕西科技大学 一种吹灰器用转头结构

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1084342A (fr) * 1900-01-01
NL289060A (fr) * 1900-01-01
FR1097235A (fr) * 1952-12-30 1955-07-01 Ivor Power Specialty Company L Perfectionnements aux appareils destinés à enlever la suie et autres corps étrangers des chaudières et similaires
US2803848A (en) * 1953-09-30 1957-08-27 Diamond Power Speciality Means for supporting and sealing retractable soot blowers
US2897532A (en) * 1959-08-04 Retractable soot blower of the long travel type
US3195165A (en) * 1961-12-21 1965-07-20 Babcock & Wilcox Ltd Fluid heater cleaners
US3216046A (en) * 1963-06-05 1965-11-09 Diamond Power Speciality Long travel soot blower with telescopic feed tube
AU684366A (en) * 1967-06-14 1968-12-19 Babcock & Wilcox Australia Limited Improvements in soot blowers
FR1557596A (fr) * 1967-04-13 1969-02-14

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1084342A (fr) * 1900-01-01
NL289060A (fr) * 1900-01-01
US2897532A (en) * 1959-08-04 Retractable soot blower of the long travel type
FR1097235A (fr) * 1952-12-30 1955-07-01 Ivor Power Specialty Company L Perfectionnements aux appareils destinés à enlever la suie et autres corps étrangers des chaudières et similaires
US2803848A (en) * 1953-09-30 1957-08-27 Diamond Power Speciality Means for supporting and sealing retractable soot blowers
US3195165A (en) * 1961-12-21 1965-07-20 Babcock & Wilcox Ltd Fluid heater cleaners
US3216046A (en) * 1963-06-05 1965-11-09 Diamond Power Speciality Long travel soot blower with telescopic feed tube
FR1557596A (fr) * 1967-04-13 1969-02-14
AU684366A (en) * 1967-06-14 1968-12-19 Babcock & Wilcox Australia Limited Improvements in soot blowers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102350419A (zh) * 2011-08-12 2012-02-15 北京凡元兴科技有限公司 一种炮架式可移动气能吹灰器
CN102350419B (zh) * 2011-08-12 2013-12-25 北京凡元兴科技有限公司 一种炮架式可移动气能吹灰器
CN102494554A (zh) * 2011-12-05 2012-06-13 武汉钢铁(集团)公司 换热器管组外壁机械清灰装置
CN102494554B (zh) * 2011-12-05 2013-04-03 武汉钢铁(集团)公司 换热器管组外壁机械清灰装置
CN110486739A (zh) * 2019-08-15 2019-11-22 陕西科技大学 一种吹灰器用转头结构

Also Published As

Publication number Publication date
DE3067599D1 (en) 1984-05-30
EP0032962B1 (fr) 1984-04-25

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