US3813749A - A tube clamp - Google Patents

A tube clamp Download PDF

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Publication number
US3813749A
US3813749A US00306132A US30613272A US3813749A US 3813749 A US3813749 A US 3813749A US 00306132 A US00306132 A US 00306132A US 30613272 A US30613272 A US 30613272A US 3813749 A US3813749 A US 3813749A
Authority
US
United States
Prior art keywords
tubes
strip
clamp
bent
pin
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
US00306132A
Other languages
English (en)
Inventor
C Peake
H Bolan
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.)
Crane Co
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US00306132A priority Critical patent/US3813749A/en
Priority to JP12457773A priority patent/JPS5313811B2/ja
Priority to US415281A priority patent/US3881240A/en
Application granted granted Critical
Publication of US3813749A publication Critical patent/US3813749A/en
Assigned to CRANE CO., A CORP. OF DE reassignment CRANE CO., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CHICAGO HEATER COMPANY, INC. A CORP. OF DE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/36—Making other particular articles clips, clamps, or like fastening or attaching devices, e.g. for electric installation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
    • B21D53/085—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal with fins places on zig-zag tubes or parallel tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0132—Auxiliary supports for elements for tubes or tube-assemblies formed by slats, tie-rods, articulated or expandable rods

Definitions

  • ABSTRACT An elongated strip of stainless steel having a plurality of equally spaced oblong holes transversely disposed therein is bent along its longitudinal axis to have a V- shaped cross section, whereby the oblong openings form kerfs, which register with and accept a tube. The kerfs are disposed over the tubes to be clamped and a pin is inserted between the tube and the bent portion of the strip, securely clamping the tubes against the pm.
  • This invention relates to tube clamps and more particularly to a tube clamp which can be easily installed in a heat exchanger after the heat exchanger has been completely assembled.
  • Tubes in central station steam surface condenses have failed because of flow induced vibration.
  • the high velocity steam passing over the outer surface of the tubes has caused the tubes to vibrate to such an extent that an area adjacent the mid portion of the span between supports come into contact and wears a hole in the tube or the vibrations cause failure of the tube adjacent the supports as a result of stress fatigue.
  • the intermediate supports have been made from sheets of Micarta drilled to the tube pattern and then cut along the centers of the holes to form strips, which were then inserted into the tube bundle to form a complete support plate. While this procedure was successful in'eliminating the failures noted above, it was very expensive.
  • a clamp for a plurality of tubes spaced to form a row of tubes when made in accordance with this invention, comprises an elongated strip having a plurality of elongated transversely disposed openings therein, the strip being bent generally parallel to its longitudinal axis so that the elongated openings form a plurality of kerfs which register with and are sufficiently deep to accept the tubes, and an elongated pin slidably disposed adjacent the bent portion of the strip to capture the tubes within the kerfs.
  • FIG. 1 is a partial sectional view of a row of tubes held together by clamps made in accordance with this invention
  • FIG. 2 is a partial sectional view taken of FIG. 1;
  • FIG. 3 is a partial plan view of an unfolded strip utilized to form the clamp
  • FIG. 4 is an isometric view of a folded strip
  • FIG. 5 is a plan view of a pin utilized to form the clip.
  • FIG. 6 is a plan view of a tool utilized to install the clamps.
  • FIGS. 1 and on line II-Il 2 show clamps 1 installed on a row of tubes to lock or clamp the tubes together to prevent vibration caused failures.
  • the clamps are particularly adapted to be installed on a row of tubes in an assembled heat exchanger.
  • the clamp 1 comprises an elongated strip 5 of stainless steel or other springy material having parallel side margins 7 and a plurality of elongated, oblong holes or openings 9 transversely disposed therein.
  • the openings 9 are generally equally spaced and are disposed on the same pitch as the tubes 3.
  • the strip is bent adjacent and parallel to its longitudinal axis to generally have a V- shaped cross section, which preferably forms a 60 angle.
  • the elongated openings 9 are disposed to form kerfs 11, which register'with the tubes 3 and are sufficiently deep to accept a tube.
  • An elongated pin or bar 13 is slidably disposed between the tubes 3 and the bent portion of the strip 5 to capture the tube within the kerfs 11. As shown in FIG. 5, the one end of the pin 15 is rounded while the other end 17 is bent the rounded end and 90 bend coopmate to assist in inserting the pin between the tubes and the bent portion of the strip 5.
  • a tool 19 is utilized to install the clamp l.
  • the tool 19 is formed from a flat bar or strip 21 of steel or other material by bending or breaking the longitudinal edges or margins 23 in excess of 90 preferably approximately 1 15 to One end 25 of the bar 21 is bent to form a handle.
  • the strip 5 may be any length, however, extremely long lengths become cumbersome and difficult to handle, therefore, as shown in FIG. 1, to clamp long rows of tubes, a plurality of short strips 5 are utilized and adjacent strips are disposed to clamp one or more tubes also clamped within a kerf 11 of an adjacent strip.
  • the clamps l and method of installing them are advantageously readily adapted to accommodate a row of tubes having any number of tubes disposed therein.
  • the clamps are also easily installed in an assembled heat exchanger, are economical to produce, and can be economically formed from materials which are erosion resistant.
  • a clamp for a plurality of tubes spaced to form a row of tubes of a heat exchanger comprising an elongated strip having a plurality of elongated openings transversely disposed therein, said strip being bent generally parallel to its longitudinal axis so that the elongated openings form a plurality of kerfs which register with and are sufficiently deep to accept said tubes, and an elongated pin slidably disposed within said bent portion of said strip to capture said tubes within said kerfs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Supports For Pipes And Cables (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US00306132A 1972-11-13 1972-11-13 A tube clamp Expired - Lifetime US3813749A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US00306132A US3813749A (en) 1972-11-13 1972-11-13 A tube clamp
JP12457773A JPS5313811B2 (Direct) 1972-11-13 1973-11-07
US415281A US3881240A (en) 1972-11-13 1973-11-12 Method for installing a tube clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00306132A US3813749A (en) 1972-11-13 1972-11-13 A tube clamp

Publications (1)

Publication Number Publication Date
US3813749A true US3813749A (en) 1974-06-04

Family

ID=23183975

Family Applications (1)

Application Number Title Priority Date Filing Date
US00306132A Expired - Lifetime US3813749A (en) 1972-11-13 1972-11-13 A tube clamp

Country Status (2)

Country Link
US (1) US3813749A (Direct)
JP (1) JPS5313811B2 (Direct)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4202085A (en) * 1978-11-30 1980-05-13 Westinghouse Electric Corp. Apparatus and method for installing rows of U-shaped tubes in a heat exchanger
US4319725A (en) * 1980-03-21 1982-03-16 Westinghouse Electric Corp. Apparatus for vertically tubing a heat exchanger
US5297339A (en) * 1992-12-28 1994-03-29 Adc Telecommunications, Inc. Fixture for terminating miniature coaxial cable
WO2022117129A1 (en) * 2020-12-01 2022-06-09 Vysoké Učení Technické V Brně Tubular shell heat exchanger with cross flow

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3159213A (en) * 1962-01-30 1964-12-01 Gen Motors Corp Refrigerating apparatus
US3498369A (en) * 1968-06-21 1970-03-03 Martin Marietta Corp Heat pipes with prefabricated grooved capillaries and method of making

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3159213A (en) * 1962-01-30 1964-12-01 Gen Motors Corp Refrigerating apparatus
US3498369A (en) * 1968-06-21 1970-03-03 Martin Marietta Corp Heat pipes with prefabricated grooved capillaries and method of making

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4202085A (en) * 1978-11-30 1980-05-13 Westinghouse Electric Corp. Apparatus and method for installing rows of U-shaped tubes in a heat exchanger
US4319725A (en) * 1980-03-21 1982-03-16 Westinghouse Electric Corp. Apparatus for vertically tubing a heat exchanger
US5297339A (en) * 1992-12-28 1994-03-29 Adc Telecommunications, Inc. Fixture for terminating miniature coaxial cable
WO2022117129A1 (en) * 2020-12-01 2022-06-09 Vysoké Učení Technické V Brně Tubular shell heat exchanger with cross flow

Also Published As

Publication number Publication date
JPS4978919A (Direct) 1974-07-30
JPS5313811B2 (Direct) 1978-05-12

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CRANE CO., A CORP. OF DE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CHICAGO HEATER COMPANY, INC. A CORP. OF DE;REEL/FRAME:004765/0631

Effective date: 19870616