US3823279A - Flexible power connection means for traveling elements - Google Patents

Flexible power connection means for traveling elements Download PDF

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Publication number
US3823279A
US3823279A US34011673A US3823279A US 3823279 A US3823279 A US 3823279A US 34011673 A US34011673 A US 34011673A US 3823279 A US3823279 A US 3823279A
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US
United States
Prior art keywords
rod
helix
controlling
conductor
flexible member
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.)
Expired - Lifetime
Application number
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English (en)
Inventor
D Rausch
P Johnston
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.)
Babcock and Wilcox Co
Original Assignee
DIAMOND POWER SPECIALITY
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 DIAMOND POWER SPECIALITY filed Critical DIAMOND POWER SPECIALITY
Priority to US34011673 priority Critical patent/US3823279A/en
Priority to CA189,148A priority patent/CA990262A/en
Priority to GB490374A priority patent/GB1420538A/en
Priority to DE19742405789 priority patent/DE2405789C3/de
Priority to AU65913/74A priority patent/AU476914B2/en
Priority to SE7402453A priority patent/SE397753B/xx
Priority to NL7402538A priority patent/NL154882B/xx
Priority to BE141472A priority patent/BE811664A/fr
Priority to IT4895074A priority patent/IT1008360B/it
Priority to JP2799174A priority patent/JPS5523007B2/ja
Priority to SU2008615A priority patent/SU546303A3/ru
Priority to BR182974A priority patent/BR7401829D0/pt
Priority to FR7408382A priority patent/FR2221836B1/fr
Application granted granted Critical
Publication of US3823279A publication Critical patent/US3823279A/en
Assigned to BABCOCK & WILCOX COMPANY THE, A CORP. OF NJ. reassignment BABCOCK & WILCOX COMPANY THE, A CORP. OF NJ. MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE:03/31/78 A CORP. OF NJ. Assignors: DIAMOND POWER SPECIALTY CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F28G15/00—Details
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G11/00—Arrangements of electric cables or lines between relatively-movable parts
    • H02G11/003—Arrangements of electric cables or lines between relatively-movable parts using gravity-loaded or spring-loaded loop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6851—With casing, support, protector or static constructional installations
    • Y10T137/6918—With hose storage or retrieval means

Definitions

  • ABSTRACT PP 340,116 A helically coiled flexible electrical conductor extensible and retractable axially to provide electrical con- 52 us. c1. 191 12 R 137 355.16 nection to a movable element is Slidably Supported lSll Int.
  • the present invention relates to conductors for providing connection to movable elements and has been developed in connection with work directed to overcoming problems which arise where a power connection must be provided to a movable motor such as is employed in long traveling soot blowers wherein the motor and a supporting carriage travel with a long lance tube, the carriage, motor and lance tube being typically supported on tracks carried by a substantially horizontal beam structure, the carriage being arranged to travel along the beam for distances which may be as great as 50 or 60 feet.
  • the motor may be either electric or air powered.
  • Various power feeding means of extensible and retractable character have been employed.
  • the present invention aims to improve upon the prior art arrangements and to provide a conductive connection to a traveling load or served apparatus wherein the conductor, in the form of a helix, is suspended on an internal rod but is provided with simple and effective means whereby overstressing of the convolutions is substantially. eliminated and the effective life of the conductor is greatly lengthened.
  • a related object is to provide such a construction which is inexpensive, easy to service when necessary, and which occupies minimum space.
  • FIG. I is a side elevational view of a known type of soot blower, illustrative of apparatus with which this invention is adapted to be usefully employed;
  • FIG. 2 is a vertical sectional longitudinal view on a somewhat larger scale illustrating a preferred embodiment of the invention
  • FIG. 3 is a crosssectional view taken substantially on the line Ill-Ill of FIG. 2 and looking in the direction of the arrows;
  • FIG. 4 is a fragmentary view of portions of the apparatus close to the actuating portion, viewed as in FIG. 2 but showing the helix extended;
  • FIGS. 5 and 6 are cross-sectional views of the expansion controlling member taken as indicated by the lines and arrows V-V and Vl-Vl respectively of FIG. 2, and looking in the direction of the arrows, but on a larger scale and with portions omitted; and
  • FIG. 7 is a plan view of the expansion control member.
  • the soot blower is shown as a well-known type of IX long retracting blower comprising a main sup porting beam 20,in the general form of an inverted U- channel, and which incorporates longitudinal supporting rails as 21 upon which a carriage 22 is rollably supported. (Only one rail is shown, but they are on both sides, as is well known.)
  • Carriage 22 incorporates a motor 28, a transmission 29, and supporting and driving means enabling it to drive itself and the lance tube 25 axially by means of a gear (not shown) which meshes with and rolls along the bottom of rack 23.
  • the motor through gearing in the carriage (and also unshown), also rotates the lance tube.
  • the outer end of the lance tube and its nozzle means 26 are thus projectable into and retractable from the interior of a boiler or other heat exchanger when appropriate power is supplied to motor 28.
  • a blower of this type is fully disclosed in US. Pat. No. 3,439,376.
  • the motor 28 derives its power from a suitable source of electricity which is deliverable through conventional means (not shown) to the vicinity of the rear end wall 30 of the soot blower, where it is electrically connected to the fixedly secured end portion 31 of the helically coiled flexible conductor 32.
  • the end portion 31 is shown as secured to the beam near the rear wall 30 by a clip-like bracket 33.
  • the coiled conductor 32 is suspended upon a rod 35 formed of steel having a low-friction covering such as the nylon sheath 36.
  • the rod is fastened at its rear end to the wall 30 and at its forward end to a front wall 38.
  • Actuating means for the movable free end of the coil comprises a rigid bracket arm assembly generally designated attached to the carriage 22 and having a verti-- cal arm portion 42 which extends to a position close to and somewhat below and to one side of the rod 35.
  • a transverse. arm 44 attached to the arm 42 extends spacedly below and transversely of the rod 35 across the forward end of the coiled conductor 32 as best shown in FIG. 3, and carries a control cone member 55 presently to be considered in greater detail.
  • the control cone which is attached to the rear face of arm 44 by machine screws 49, has a flat vertical base defining a wall 51 to which is attached a supporting slide-block 45 grooved at 53 to receive and positioned to underlie and support the rod 35 against sagging.
  • Block 45 may be formed of or coated with low-friction material. In a preferred construction it has been formed of nylon impregnated with molybdenum disulfide.
  • the arm 44 is provided with vertically oriented slots 46 for the bolts 47 which secure it to the vertical arm 42, and with horizontal slots 48 for the bolts 49.
  • the block 45 and cone 55 are thus adjustable both vertically and horizontally to permit locating them accurately with respect to the rod and to compensate for variant positionings of the carriage with respect to the beam and other components.
  • the forward end of the flexible conductor 32 is clamped as by the bracket 50 for the arm 42 and as shown in FIG. 2 an extended portion 32' of the conductor is led to a junction box 52 on the carriage to provide power connection to the motor 28.
  • expansion-controlling means comprising the generally conic supplemental supporting and inhibiting member 55, previously mentioned, attached to the rear face of the arm 42 and extending into the interior of the helically coiled conductor.
  • the upper surface portion 56 of the control cone 55 is arranged horizontally and projects above the supporting rod 35, which lies in a slot 58 which extends longitudinally the full length of thecontrol cone, so that the convolutions which overlie the cone are supported upon the cone rather than upon the rod itself.
  • the diameter of the cone in its region closest to the actuating arm.42 approaches the internal helix diameter of the coiled conductor when the latter is collapsed to its shortest axial length.
  • the cone is relatively long, extending somewhat more than half the length of the collapsed helix in the construction shown, which is for a travel of 25 feet.
  • the stretching of such leading convolution is limited by the wrapped engagement between such convolution and the surface of the cone (FIG. 4).
  • the second convolution 63 is limited in its extensionby its wrapped frictional engagement with the cone surface, although the linear extent of wrapped engagement may not extend the full length of the second convolution.
  • the cone is made of or surfaced with a smooth but relatively non-slippery material, cast aluminum having been used by us. Due to its length and gradual taper,
  • the leading convolutions grip and are pulled by the cone without permitting the portion of the coil closest to the leading end to flex unduly or to carry the tensile stress required to extend the coil, the force required to pull out the coil being distributed throughout the length of the portions which grip the cone.
  • Overworking of the next succeeding convolutions toward the rear during the initial part of the travel is adequately prevented by the adhesive or frictional drag between the upper cone surface and the convolutions, which, as noted previously, successively tend to move rearwardly upon and drop off of the cone as the carriage moves forwardly prior to the stretching of the leading convolutions to the gripping condition.
  • the rod 35 is positioned low enough in the slot 58 so that the coils which overlie the cone do not touch the rod, as noted.
  • the rod is maintained spacedly above the bottom of the slot 58 by the bearing block 45.
  • control cone At its rear end the control cone is provided with a smoothly contoured extremity 65 which is curved downwardly toward the rear to provide a gradual lifting effect which assists the convolutions to return to the top of the cone as the carriage returns to the rear.
  • Conductor means of the type which includes a helically coiled flexible member surrounding and suspended upon a supporting rod and axially slidably extensible and contractable on the rod, and an actuating portion for moving one end area of the flexible member axially relatively to a remote area thereof to extend and contract the helix, the internal diameter of the helix being substantially greater than the outside diameter of the rod, characterized by an expansion controlling portion movable with said actuating portion and extending into the helix and having portion radially outspaced from the rod and engageable by portions of the flexible member near said one end to oppose relative axial movement between such engageable portions of the flexible member and said actuating portion.
  • controlling portion extends into the helix .at said one end of the coiled flexible member and is frictionally engageable with and disengageable from convolutions of the helical coil during movement of the actuating portion.
  • controlling portion is of tapering form having a substantially horizontal top at an elevation above the bar and an inclined bottom portion which diverges downwardly in a direction toward the actuating portion.
  • Conductor means as defined in claim 11 including a supporting slide bearing portion slidably underengaging the rod, the controlling portion and slide bearing portion being attached to the actuating portion, the controlling member also having a guiding portion at its end farthest from the actuating portion inclined downwardly in a direction away from the actuating portion to an elevation below the bar to guideconvolutions upwardly off of the bar and onto the controlling portion during movement in the contracting direction.
  • Conductor means of the type which includes a helically coiled flexible member surrounding and suspended upon a supporting rod and axially slidably extensible and contractable on'the rod, and an actuating portion for moving one end area of the flexible member axially relatively to a remote area thereof to extend and contract the helix, 'the internal diameter of the helix being substantially greater than the outside diameter of the rod, characterized by a support movable with the actuating portion and underengaging the rod to inhibit sagging of the rod.
  • a support underengaging the rod to inhibit sagging thereof, said support being fixed with respect to and traveling with the expansion controlling portion.
  • a combination as defined in claim 1 including a support underengaging the rod to inhibit sagging thereof, said support being fixed with respect to and traveling with the expansion controlling portion and urging the rod away from the controlling portion to prevent unwanted frictional engagement between said portion and rod.
  • a soot blower construction of the type having a supporting beam, a carriage movable along the beam, a motor movable with the carriage, means for supplying power to the motor including a flexible conductor helically coiled about an axis extending longitudinally of the beam, a rod fixed to the beam and extending through and supporting the conductor, one end of the conductor being fixed to the beam and the other end fast with respect to the motor and carriage whereby movement .of the carriage along the beam extends and contracts the helix, and an extension controlling portion at least partly surrounding the rod and movable along the rod and beam with the carriage, said controlling member extending into the helix and having portions radially outspaced from the rod and engageable by portions of the conductor at a position spaced from said other end of the conductor to oppose relative axial movement between such engageable portions of the conductor and the carriage.
  • Conductor means of the type which includes a helically coiled flexible member surrounding and suspended upon a supporting rod and axially slidably extensible and contractable on the rod, and an actuating portion for moving one end area of the flexible member axially relatively to a remote area thereof to extend and contract the helix, the internal diameter of the helix being substantially greater than the outside diameter of the rod, characterized by an expansion controlling portion movable with said actuating portion and extending UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3, 823, 279 Dated July 9, 1974 Inventor(s) David A. Rausch and Paul R. Johnston It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Electric Cable Arrangement Between Relatively Moving Parts (AREA)
  • Linear Motors (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Wire Processing (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Microwave Tubes (AREA)
US34011673 1973-03-12 1973-03-12 Flexible power connection means for traveling elements Expired - Lifetime US3823279A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US34011673 US3823279A (en) 1973-03-12 1973-03-12 Flexible power connection means for traveling elements
CA189,148A CA990262A (en) 1973-03-12 1973-12-28 Flexible power connection means for traveling elements
GB490374A GB1420538A (en) 1973-03-12 1974-02-01 Conductor assembly for connecting power to travelling element
DE19742405789 DE2405789C3 (de) 1973-03-12 1974-02-07 Ausziehbare Leitungseinrichtung mit schraubenlinienförmig gewundenem flexiblem Leiter
AU65913/74A AU476914B2 (en) 1973-03-12 1974-02-22 Flexible power connection means for traveling elements
NL7402538A NL154882B (nl) 1973-03-12 1974-02-25 Inrichting met een door een flexibele verbindingsleiding verbonden loopgedeelte.
SE7402453A SE397753B (sv) 1973-03-12 1974-02-25 Rorlig kraftforbindelse for rorliga element
BE141472A BE811664A (fr) 1973-03-12 1974-02-27 Dispositif de connexion d'alimentation flexible pour elements mobiles
IT4895074A IT1008360B (it) 1973-03-12 1974-03-04 Mezzo motore di collegamento flessi bile per elementi in movimento
JP2799174A JPS5523007B2 (fr) 1973-03-12 1974-03-11
SU2008615A SU546303A3 (ru) 1973-03-12 1974-03-11 Устройство дл гибкого токоподвода
BR182974A BR7401829D0 (pt) 1973-03-12 1974-03-11 Dispositivo condutor aperfeicoado e aperfeicoamentos em construcao de soprador de fuligem
FR7408382A FR2221836B1 (fr) 1973-03-12 1974-03-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US34011673 US3823279A (en) 1973-03-12 1973-03-12 Flexible power connection means for traveling elements

Publications (1)

Publication Number Publication Date
US3823279A true US3823279A (en) 1974-07-09

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Application Number Title Priority Date Filing Date
US34011673 Expired - Lifetime US3823279A (en) 1973-03-12 1973-03-12 Flexible power connection means for traveling elements

Country Status (12)

Country Link
US (1) US3823279A (fr)
JP (1) JPS5523007B2 (fr)
AU (1) AU476914B2 (fr)
BE (1) BE811664A (fr)
BR (1) BR7401829D0 (fr)
CA (1) CA990262A (fr)
FR (1) FR2221836B1 (fr)
GB (1) GB1420538A (fr)
IT (1) IT1008360B (fr)
NL (1) NL154882B (fr)
SE (1) SE397753B (fr)
SU (1) SU546303A3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207836A1 (de) * 1981-04-20 1982-11-04 The Babcock & Wilcox Co., 70112 New Orleans, La. Russblaeser
US5167307A (en) * 1991-07-29 1992-12-01 The Babcock & Wilcox Company Floating cable loop control assembly
US6155630A (en) * 1998-05-28 2000-12-05 Aisin Seiki Kabushiki Kaisha Slide door device for automotive vehicles
CN107592075A (zh) * 2017-10-11 2018-01-16 青海黄河上游水电开发有限责任公司光伏产业技术分公司 一种光伏组件测试挂架

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114396828B (zh) * 2021-12-16 2024-05-10 苏州天河中电电力工程技术有限公司 一种凝汽器传热管空化射流清洗装置及其清洗方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207836A1 (de) * 1981-04-20 1982-11-04 The Babcock & Wilcox Co., 70112 New Orleans, La. Russblaeser
US5167307A (en) * 1991-07-29 1992-12-01 The Babcock & Wilcox Company Floating cable loop control assembly
US6155630A (en) * 1998-05-28 2000-12-05 Aisin Seiki Kabushiki Kaisha Slide door device for automotive vehicles
CN107592075A (zh) * 2017-10-11 2018-01-16 青海黄河上游水电开发有限责任公司光伏产业技术分公司 一种光伏组件测试挂架
CN107592075B (zh) * 2017-10-11 2023-10-10 青海黄河上游水电开发有限责任公司光伏产业技术分公司 一种光伏组件测试挂架

Also Published As

Publication number Publication date
BE811664A (fr) 1974-06-17
FR2221836B1 (fr) 1978-01-06
GB1420538A (en) 1976-01-07
SE397753B (sv) 1977-11-14
FR2221836A1 (fr) 1974-10-11
SU546303A3 (ru) 1977-02-05
DE2405789A1 (de) 1974-10-03
AU6591374A (en) 1975-08-28
JPS5523007B2 (fr) 1980-06-20
DE2405789B2 (de) 1976-07-01
IT1008360B (it) 1976-11-10
NL7402538A (fr) 1974-09-16
BR7401829D0 (pt) 1974-11-19
CA990262A (en) 1976-06-01
AU476914B2 (en) 1976-10-07
NL154882B (nl) 1977-10-17
JPS49127191A (fr) 1974-12-05

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Date Code Title Description
AS Assignment

Owner name: BABCOCK & WILCOX COMPANY THE, A CORP. OF NJ.

Free format text: MERGER;ASSIGNOR:DIAMOND POWER SPECIALTY CORPORATION;REEL/FRAME:003854/0861

Effective date: 19780331

Owner name: BABCOCK & WILCOX COMPANY THE, A CORP. OF NJ., NEW

Free format text: MERGER;ASSIGNOR:DIAMOND POWER SPECIALTY CORPORATION;REEL/FRAME:003854/0861

Effective date: 19780331