US3593781A - Distributing arrangement for shot-fed soot cleaning systems - Google Patents

Distributing arrangement for shot-fed soot cleaning systems Download PDF

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Publication number
US3593781A
US3593781A US874942A US3593781DA US3593781A US 3593781 A US3593781 A US 3593781A US 874942 A US874942 A US 874942A US 3593781D A US3593781D A US 3593781DA US 3593781 A US3593781 A US 3593781A
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US
United States
Prior art keywords
distributing
cleaning
cleaning particles
feed pipe
distributing member
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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.)
Expired - Lifetime
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US874942A
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English (en)
Inventor
Borje Fransman
Per Thorson
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Individual
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Individual
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Publication date
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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
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • 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
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies

Definitions

  • the present invention relates to the cleaning of gas-swept beating surfaces in heat exchanging apparatus by the scouring action of cleaning particles, such as steel shot, which are scattered over the heating surfaces by a distributing member from which the cleaning particles rebound.
  • the invention provides, in combination with a distributing member as already known in the art an annulus-shaped distributing element disposed below the said distributing member and substantially concentrically thereto.
  • the distribution pattern of the cleaning particles, after the latter have hit against the distributing member may be rather nonuniform. Especially those cleaning particles striking the distributing member tangentially may become concentrated to certain zones of the heating surfaces, causing damage in the long run, whereas other portions of the heating surfaces may become starved of cleaning particles and thus will not be adequately cleaned.
  • these distributing means comprise in combination a distributing member having an upward-facing convex active surface and below this member, substantially concentrically therewith, an annulus-shaped distributing element.
  • Distributing members with-a convex, preferably spherical active surface are priorly known. Such a device is disclosed, for example, in US. Pat No. 2,809,018.
  • FIG. I is a side elevation view of a combined distributing member and FIG. 2 is atop plan view, partly in section along the line ll-Il in FIG. 1.
  • the combined distributing member illustrated in the drawing will be mounted within a heat exchanger below the top of the latter and some distance above the uppermost gas-swept heating surfaces thereof. Means will be provided for cycling cleaning particles through the heat exchanger in a closed circuit.
  • the general arrangement may be such as described and illustrated, for example, in US. Pat. No. 2,665,118 and No. 2,665,] 19 which disclose heating surface cleaning systems illustrative of the art although provided with distribution members of a rotary type.
  • the cleaning particles are fed downwards through a vertical pipe which sealingly passes through the top of the heat exchanging apparatus and fonns part of a circuit for cycling cleaning particles through the heat exchanger.
  • the bottom end of pipe 10 is surrounded by a flange or collet II, and a depending angle-shaped bracket 12 is rigidly secured by one of its shanks to said collet 11.
  • the other shank of the bracket 12 extends substantially horizontally and terminates in a cylindrical member 13 rigidly secured thereto.
  • a part-spherical distributing member B4 of a hard, wear-resistant material is mounted with its convex surface facing upwards on the top face of the cylindrical member I3, in directly opposed relationship to the mouth of the pipe 10. Cleaning particles fed through the pipe I0 will hit against the convex surface of distributing member 14 to be scattered thereby over the heating surfaces of the heat exchanger.
  • Some cleaning particles which hit the distributing member 14 at points close to the outer edge thereof tend to be concentrated toward certain portions of the heating surfaces when the intensity of particle bombardment :is great.
  • annular element 15 of a wear-resistant material which is located below the distributing member I4, concentrically thereabout.
  • the annular element 15 is rigidly secured at one side to the bracket I2 and at the opposed side to the cylindrical member 13 by means of a strut member 16.
  • the components making up the device described above are preferably joined together by welding.
  • the dimensions and position of the annular element 15 is chosen in such a way that it will intercept in the first place those cleaning particles which hit the distributing member glancingly, as already described, and will scatter such particles in different directions, avoiding thus the tendency for particle concentration to certain zones which would incur the hazard of a too vigorous attack on the heating surfaces whereas the area directly below the distributing member would be subjected to the action of only a comparatively small number of particles.
  • the annulus-shaped element 15 has been illustrated as having a circular cross section shape, but each other suitable shape may be used, instead.
  • cross section area of the heat exchanger exceeds a size for which a single distributing arrangement will be adequate two or more spaced such arrangements may be provided.
  • a cleaning particle intercepting and scattering arrangement comprising an essentially vertical feed pipe for cleaning particles; flange means at the bottom end of the said feed pipe; bracket means rigidly attached to said flange means and extending downwards and inwards below said feed pipe; a support member rigidly attached to said bracket means directly opposite said feed pipe; at partspherical distributing member mounted on top of said support member, and a toroidal annular distributing element being of a width greater than that of the part-spherical member and disposed below the latter, substantially concentrically thereto, said element being rigidly attached to said bracket means and said support means.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning In General (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US874942A 1968-11-08 1969-11-07 Distributing arrangement for shot-fed soot cleaning systems Expired - Lifetime US3593781A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE15175/68A SE314765B (enrdf_load_stackoverflow) 1968-11-08 1968-11-08

Publications (1)

Publication Number Publication Date
US3593781A true US3593781A (en) 1971-07-20

Family

ID=20300267

Family Applications (1)

Application Number Title Priority Date Filing Date
US874942A Expired - Lifetime US3593781A (en) 1968-11-08 1969-11-07 Distributing arrangement for shot-fed soot cleaning systems

Country Status (9)

Country Link
US (1) US3593781A (enrdf_load_stackoverflow)
BE (1) BE741451A (enrdf_load_stackoverflow)
DK (1) DK121449B (enrdf_load_stackoverflow)
FR (1) FR2022919A1 (enrdf_load_stackoverflow)
GB (1) GB1284576A (enrdf_load_stackoverflow)
LU (1) LU59783A1 (enrdf_load_stackoverflow)
NL (1) NL6916823A (enrdf_load_stackoverflow)
NO (1) NO123137B (enrdf_load_stackoverflow)
SE (1) SE314765B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639381A (en) * 1983-09-19 1987-01-27 Nalco Chemical Company Method for reducing fireside tube deposition and boiler sootblowing requirements
US5172757A (en) * 1990-05-21 1992-12-22 Chubu Electric Power Company Inc. Method for removing soot by scattering steel balls in a heat-exchanger and heat-exchanger provided with a steel ball scatterer
CN110274514A (zh) * 2019-06-24 2019-09-24 迟倩倩 一种换热器的胶球清洗分配装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL186273C (nl) * 1983-06-30 1990-10-16 Ishikawajima Harima Heavy Ind Inrichting voor het reinigen van de in hoofdzaak in horizontale richting lopende, buizen van een warmtewisselaar.
DK0596538T3 (da) * 1990-05-21 1998-04-27 Mitsubishi Heavy Ind Ltd Varmeveksler udstyret med en stålkuglespreder

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2765588A (en) * 1952-10-20 1956-10-09 Babcock & Wilcox Co Device for uniform distribution of material over a horizontal cross-sectional area of a vertically extending zone
US2809018A (en) * 1951-11-15 1957-10-08 Ekstroems Maskinaffaer Ab Apparatus for distributing cleaning particles over gas-swept surfaces in heat exchangers and the like
US2946569A (en) * 1953-06-18 1960-07-26 Babcock & Wilcox Co Apparatus for cleaning the surfaces of heat exchange means
US2993681A (en) * 1956-07-04 1961-07-25 Babcock & Wilcox Co Dense flow shot cleaning
US3302699A (en) * 1964-04-27 1967-02-07 Ekstroems Maskinaffaer Ab Shot distributing member for shot cleaning apparatus for gas-swept heating surfaces

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809018A (en) * 1951-11-15 1957-10-08 Ekstroems Maskinaffaer Ab Apparatus for distributing cleaning particles over gas-swept surfaces in heat exchangers and the like
US2765588A (en) * 1952-10-20 1956-10-09 Babcock & Wilcox Co Device for uniform distribution of material over a horizontal cross-sectional area of a vertically extending zone
US2946569A (en) * 1953-06-18 1960-07-26 Babcock & Wilcox Co Apparatus for cleaning the surfaces of heat exchange means
US2993681A (en) * 1956-07-04 1961-07-25 Babcock & Wilcox Co Dense flow shot cleaning
US3302699A (en) * 1964-04-27 1967-02-07 Ekstroems Maskinaffaer Ab Shot distributing member for shot cleaning apparatus for gas-swept heating surfaces

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639381A (en) * 1983-09-19 1987-01-27 Nalco Chemical Company Method for reducing fireside tube deposition and boiler sootblowing requirements
US5172757A (en) * 1990-05-21 1992-12-22 Chubu Electric Power Company Inc. Method for removing soot by scattering steel balls in a heat-exchanger and heat-exchanger provided with a steel ball scatterer
CN110274514A (zh) * 2019-06-24 2019-09-24 迟倩倩 一种换热器的胶球清洗分配装置

Also Published As

Publication number Publication date
DE1956221A1 (de) 1970-06-18
NO123137B (enrdf_load_stackoverflow) 1971-10-04
BE741451A (enrdf_load_stackoverflow) 1970-04-16
DK121449B (da) 1971-10-18
FR2022919A1 (enrdf_load_stackoverflow) 1970-08-07
NL6916823A (enrdf_load_stackoverflow) 1970-05-12
LU59783A1 (enrdf_load_stackoverflow) 1970-03-18
GB1284576A (en) 1972-08-09
SE314765B (enrdf_load_stackoverflow) 1969-09-15
DE1956221B2 (de) 1975-10-23

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