US903132A - Cleaning device for feed-water heaters. - Google Patents

Cleaning device for feed-water heaters. Download PDF

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Publication number
US903132A
US903132A US42080308A US1908420803A US903132A US 903132 A US903132 A US 903132A US 42080308 A US42080308 A US 42080308A US 1908420803 A US1908420803 A US 1908420803A US 903132 A US903132 A US 903132A
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scrapers
section
feed water
cleaning device
bars
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US42080308A
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Thaddious V Elliott
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MARIEA ELLIOTT
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MARIEA ELLIOTT
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G7/00—Cleaning by vibration or pressure waves

Definitions

  • Figure l is a side elevation of the improvement as applied, the furnace being' shown in longitudinal section, on the line l-1 of Fig. 2;
  • Fig. 2 is a front elevation of the same, partly in section, on the line 2-2 of Fig. l;
  • F ig. 3 is an enlarged sectional. side elevation of the improvement, on the line 3 3 of Fig. at;
  • Fig. l is a transverse section of the same, on the line l--ll of Fig. 3;
  • Fig. 5 is a sectional plan view of the same, on the line of Fig. 3.
  • the feed water heater is arranged in the heating chamber A of the boiler B, set in the usual brickwork O of the furnace, and the said feed water heater is preferably made in two sections, one on each side of the heating chamber A, the sections extending longitudinally in the furnace so as not to interfere with the water-box and other parts of the furnace.
  • Each section of the feed water heater is formed of horizontally disposed tubular members D, D and D2, located one above the other and preferably rectangular in cross section, as indicated in Figs. 2 and 4l.
  • the sections D and D are connected with each other by vertical pipes D3 and similar'pipes D1t connect the sections D and D2 with each other, and the forward end of the section D is connected with a water supply pipe E extending through the front wall of the furnace to the outside thereof to connect with a suitable water supply.
  • the several sections D, D and D2 are connected by pipes F, F and F2 with a pipe F3 leading into the water compartment of the boiler B, so as to discharge the heated feed water into the said boiler from the said sections D, D and D2.
  • the several sections D, D and D2 are connected by pipes G, G and G2 with a pipe G2 leading into the top or steam compartment of the boiler B.
  • the inner end of the section D is connected by a pipe H, having a check valve H, with a blow-off pipe H2 leading from the bottom of the boiler B to a discharge pipe H2, having a valve H4 which, when opened, allows the discharge of the water and steam contained in the boiler B.
  • the forward end of the lower section D2 of the feed water heater forms the mud drum and is provided with a ⁇ blow-off pipe l having a valve I.
  • the middle section D of the feed water heater are arranged longitudinally extending bars J and J spaced a suitable distance apart and extending at their forward ends through a portion of the supply pipe E and through asuitable stuffing box K to the outside of the furnace, the outer ends of the said bars J and J being connected with hand levers L and L, fulcrumed on links L2, pivoted on brackets L3 attached to the pipe E.
  • the bars J and J within the section D are provided with spaced scrapers J2 and J 3, in engagement with the inner surface of the section D, and the said scrapers are placed suitable distances apart so that when the bars J and J are moved longitudinally in opposite directions, the said scrapers scrape the entire inner surface of the section D, the sliding movement given to each bar being somewhat in excess of one-half the distance between adjacent sides of the Scrapers J2 and J 3.
  • the scraper bars J and J are provided at their inner surfaces with racks J 4 and J 5 arranged in the bars and in mesh with opposite sides of pinions N, having cross-shaped hubs N, extending at their upper ends into the lower part of the corresponding connecting tube D3;
  • each hub N extends into the connecting tube D4, between the sections D and D2. 0n both ends of each hub N are secured Scrapers 0 and O, of which the scraper O extends to the top of the tube D3 and the scraper O extends to the lower end of the tube D4.
  • Each of the Scrapers 0 and G is ⁇ in the shape of a flat bar in contact at its side edges with the inner surface of the corresponding tube D3 or Dt, and when the bars J and J receive a sliding motion in opposite directions, as previously explained, then the corresponding pairs of racks J t, J 5 rotate the pinions N, so that a rotary motion is given to the Scrapers and O', to turn the same completely around in the tubes Dg and D4 and scrape the inner surfaces thereof.
  • a scraper bar P extends lengthwise in the upper section D of the feed water heater and on this scraper bar P are secured Scrapers P', similar to the Scrapers J 3 and in contact with the inner surface of the section D.
  • the scraper bar P extends its forward end through a pipe D5 passing through the front wall of the briclrwork C, and the outer end of the said scraper bar l? also passes through a stuffing box K held on the terminal of the pipe Di.
  • ii lever )2 is pivotally connected with the outer end of the scraper bar l), and this lever P2 is fulcrumed on a link P3, pivoted to a bracket P4 attached to the pipe DS Dy the operator imparting a Swinging motion to this lever P2, the bar P is moved lengthwise in the section D and consequently its Scrapers P scrape Athe inner surface of the said sectionV D.
  • rllhe material scraped off the inner surface of the section D is carried by the Scrapers D to the tubes D3, through which the said material can fall down and through the section D and tube D4, to finally reach the mud-drum section D2, and in a like manner the material scraped off in the tubes Drs flows down to the muddrum, and likewise the material scraped in the section D and the tubes D4 finally passes into the mud-drum section D2.
  • rEhe latter is blown off from time to time by the operator opening the valve l', to discharge the sediment or scraped-off material by way of the pipe l to a suitable place of discharge.
  • the cleaning device forms a permanent fixture of the feed water heater and can be actuated from time to time by the operator, to scrape off any material that may have collected on the inner surfaces of the sections and pipes of the feed water heater, and the scraped-off material can be finally removed from the mud-drum section D2 into which it passes by opening the valve l from time to time, as previously mentioned.
  • the sections D and D and pipes D3, D4 are made sufficiently large to readily accommodate the members of the cleaning device, so as to provide suilicient space for the amount of feed water required for properly feeding the boiler B.
  • the combination with a feed water heater comprising communicating horizontal and vertical members of a cleaning device therefor, comprising longitudinal bars spaced apart and extending within a horizontal member of the feed water heater, Scrapers attached to the bars, a pair of hand levers connected with the outer ends YoftheV bars to move the same lengthwise in opposite directions, raclrs attached to the bars and arranged in pairs, shafts in the vertical members of the heater, and extending vintoV the horizontal member, pinions secured to the shafts and in mesh on opposite sides with the racks, and longitudinally disposed Scrapers on the Shafts within the vertical members.
  • combination with va feed water heater comprising communicating horizontal and vertical members, of a cleaning deviceY therefor, comprising longitudinal bars spaced: apart and extending within a horizontal Y member of the feed water heater, Scrapers attached to the bars, a pair of hand levers con- V nected with the outer ends of the bars to. move the same lengthwise in opposite directions, shafts in the vertical members extending into the horizontal member, Vlongitudinally disposed ScrapersV on theY shafts, and means whereby the movement of the bars may rotate theV Shafts.k
  • the combination with a feed ⁇ water heater comprising vertical and longitudinal members of a cleaning device permanently Y arranged within the members, comprising reciprocating Scrapers in the horizontal-members, rotary Scrapers in the vertical members', means whereby to reciprocate the first namedV scrap'ers, and means whereby .the reciproca- 115 tion of the said Scrapers may rotat ⁇ ethe Scrapers in the vertical members.
  • a feed water heater comprising communicating vertical and horizontal members, of reciprocating Scrapers in the vhorizontal ⁇ members,. rotary Y sera-pers in the vertical members, and means for simultaneously actuating all the Scrapers.

Description

T. v. ELLIOTT. CLEANING DEVICE FOB FEED WATER. HEATERS.
APPLICATION FILED MAY 1, 1905. BENEWED MAR. 13, 1908.
Patented Nov. 3, 1908.
WITNESSES;
nu: NoRRls PETERS cm, wAsulNanN. n. c.
Unir @.lsr yanni erica.
THADDIOUS V. ELLIOTT, OF NEW YORK, N. Y., ASSIGNOR TO MARIEA ELLIOTT,
OF FLATBUSH, NEW YORK.
CLEANING DEVICE FOR FEED-WATER HEATERS.
Specification or" Letters Patent.
Patented Nov. 3, 1908.
Application filed May 1, 1905, Serial No. 258,271. Renewed March 13, 1908. Serial No. 420,803.
To all whom it may concern:
Be it known that I, THADDIoUs V. ELLIOTT, a citizen of the United States,vand a resident of the city of New York, Flatbush, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Cleaning Device for FeediVater Heaters, of which the following is a full, clear, and exact description.
The object of the invention is to provide a new and improved cleaning device, more especially designed for effectively cleaning feed water heaters whenever desired, without requiring shutting off the feed water from the boiler.
The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.
A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate correspondingl parts in all the views.
Figure l is a side elevation of the improvement as applied, the furnace being' shown in longitudinal section, on the line l-1 of Fig. 2; Fig. 2 is a front elevation of the same, partly in section, on the line 2-2 of Fig. l; F ig. 3 is an enlarged sectional. side elevation of the improvement, on the line 3 3 of Fig. at; Fig. l is a transverse section of the same, on the line l--ll of Fig. 3; and Fig. 5 is a sectional plan view of the same, on the line of Fig. 3. i
The feed water heater, as shown in the drawings, is arranged in the heating chamber A of the boiler B, set in the usual brickwork O of the furnace, and the said feed water heater is preferably made in two sections, one on each side of the heating chamber A, the sections extending longitudinally in the furnace so as not to interfere with the water-box and other parts of the furnace. Each section of the feed water heater is formed of horizontally disposed tubular members D, D and D2, located one above the other and preferably rectangular in cross section, as indicated in Figs. 2 and 4l. The sections D and D are connected with each other by vertical pipes D3 and similar'pipes D1t connect the sections D and D2 with each other, and the forward end of the section D is connected with a water supply pipe E extending through the front wall of the furnace to the outside thereof to connect with a suitable water supply.
The several sections D, D and D2 are connected by pipes F, F and F2 with a pipe F3 leading into the water compartment of the boiler B, so as to discharge the heated feed water into the said boiler from the said sections D, D and D2.
In order to subject the feed water in the feed water heater to the same pressure as that of the steam in the boiler, the several sections D, D and D2 are connected by pipes G, G and G2 with a pipe G2 leading into the top or steam compartment of the boiler B. The inner end of the section D is connected by a pipe H, having a check valve H, with a blow-off pipe H2 leading from the bottom of the boiler B to a discharge pipe H2, having a valve H4 which, when opened, allows the discharge of the water and steam contained in the boiler B. The forward end of the lower section D2 of the feed water heater forms the mud drum and is provided with a` blow-off pipe l having a valve I.
In order to allow of periodically cleaning the interior surfaces of the sections D, D and the pipes D3, D4, without interrupting the proper working of the feed water heater, the following cleaning device is provided:
ln the middle section D of the feed water heater are arranged longitudinally extending bars J and J spaced a suitable distance apart and extending at their forward ends through a portion of the supply pipe E and through asuitable stuffing box K to the outside of the furnace, the outer ends of the said bars J and J being connected with hand levers L and L, fulcrumed on links L2, pivoted on brackets L3 attached to the pipe E. By the opera-tor takinghold with both hands of the hand levers L and L and swinging the same in opposite directions, a longitudinal sliding motion is given to the bars J and J in opposite directions. The bars J and J within the section D, are provided with spaced scrapers J2 and J 3, in engagement with the inner surface of the section D, and the said scrapers are placed suitable distances apart so that when the bars J and J are moved longitudinally in opposite directions, the said scrapers scrape the entire inner surface of the section D, the sliding movement given to each bar being somewhat in excess of one-half the distance between adjacent sides of the Scrapers J2 and J 3. The scraper bars J and J are provided at their inner surfaces with racks J 4 and J 5 arranged in the bars and in mesh with opposite sides of pinions N, having cross-shaped hubs N, extending at their upper ends into the lower part of the corresponding connecting tube D3;
and the lower end of the said hub N extends into the connecting tube D4, between the sections D and D2. 0n both ends of each hub N are secured Scrapers 0 and O, of which the scraper O extends to the top of the tube D3 and the scraper O extends to the lower end of the tube D4. Each of the Scrapers 0 and G is `in the shape of a flat bar in contact at its side edges with the inner surface of the corresponding tube D3 or Dt, and when the bars J and J receive a sliding motion in opposite directions, as previously explained, then the corresponding pairs of racks J t, J 5 rotate the pinions N, so that a rotary motion is given to the Scrapers and O', to turn the same completely around in the tubes Dg and D4 and scrape the inner surfaces thereof.
A scraper bar P extends lengthwise in the upper section D of the feed water heater and on this scraper bar P are secured Scrapers P', similar to the Scrapers J 3 and in contact with the inner surface of the section D. The scraper bar P extends its forward end through a pipe D5 passing through the front wall of the briclrwork C, and the outer end of the said scraper bar l? also passes through a stuffing box K held on the terminal of the pipe Di. ii lever )2 is pivotally connected with the outer end of the scraper bar l), and this lever P2 is fulcrumed on a link P3, pivoted to a bracket P4 attached to the pipe DS Dy the operator imparting a Swinging motion to this lever P2, the bar P is moved lengthwise in the section D and consequently its Scrapers P scrape Athe inner surface of the said sectionV D. rllhe material scraped off the inner surface of the section D is carried by the Scrapers D to the tubes D3, through which the said material can fall down and through the section D and tube D4, to finally reach the mud-drum section D2, and in a like manner the material scraped off in the tubes Drs flows down to the muddrum, and likewise the material scraped in the section D and the tubes D4 finally passes into the mud-drum section D2. rEhe latter is blown off from time to time by the operator opening the valve l', to discharge the sediment or scraped-off material by way of the pipe l to a suitable place of discharge.
From the'foregoing it will be seen that the cleaning device forms a permanent fixture of the feed water heater and can be actuated from time to time by the operator, to scrape off any material that may have collected on the inner surfaces of the sections and pipes of the feed water heater, and the scraped-off material can be finally removed from the mud-drum section D2 into which it passes by opening the valve l from time to time, as previously mentioned.
The sections D and D and pipes D3, D4 are made sufficiently large to readily accommodate the members of the cleaning device, so as to provide suilicient space for the amount of feed water required for properly feeding the boiler B.
Having thus described my invention, I claim as new and desire to secure by Letters Patent: Y'
1. The combination witha feed water heater comprising communicating horizontal and vertical members of a cleaning device therefor, comprising longitudinal bars spaced apart and extending within a horizontal member of the feed water heater, Scrapers attached to the bars, a pair of hand levers connected with the outer ends YoftheV bars to move the same lengthwise in opposite directions, raclrs attached to the bars and arranged in pairs, shafts in the vertical members of the heater, and extending vintoV the horizontal member, pinions secured to the shafts and in mesh on opposite sides with the racks, and longitudinally disposed Scrapers on the Shafts within the vertical members.
2. rlhe combination with va feed water heater, comprising communicating horizontal and vertical members, of a cleaning deviceY therefor, comprising longitudinal bars spaced: apart and extending within a horizontal Y member of the feed water heater, Scrapers attached to the bars, a pair of hand levers con- V nected with the outer ends of the bars to. move the same lengthwise in opposite directions, shafts in the vertical members extending into the horizontal member, Vlongitudinally disposed ScrapersV on theY shafts, and means whereby the movement of the bars may rotate theV Shafts.k
3. The combination with a feed `water heater comprising vertical and longitudinal members of a cleaning device permanently Y arranged within the members, comprising reciprocating Scrapers in the horizontal-members, rotary Scrapers in the vertical members', means whereby to reciprocate the first namedV scrap'ers, and means whereby .the reciproca- 115 tion of the said Scrapers may rotat`ethe Scrapers in the vertical members. p
4. The combination'with a feed water heater, comprising communicating vertical and horizontal members, of reciprocating Scrapers in the vhorizontal `members,. rotary Y sera-pers in the vertical members, and means for simultaneously actuating all the Scrapers.
ln testimony whereof l have signed my name to this specification 'inthe presenceof 1,25
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