FR2312330A1 - Treatment of hairpin heat-exchanger tubes - to increase corrosion resistance, by blasting external surface, using movable tube-carrier and rotatable spray-post - Google Patents

Treatment of hairpin heat-exchanger tubes - to increase corrosion resistance, by blasting external surface, using movable tube-carrier and rotatable spray-post

Info

Publication number
FR2312330A1
FR2312330A1 FR7516976A FR7516976A FR2312330A1 FR 2312330 A1 FR2312330 A1 FR 2312330A1 FR 7516976 A FR7516976 A FR 7516976A FR 7516976 A FR7516976 A FR 7516976A FR 2312330 A1 FR2312330 A1 FR 2312330A1
Authority
FR
France
Prior art keywords
tube
treatment
post
spraying post
carrier
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
FR7516976A
Other languages
French (fr)
Other versions
FR2312330B1 (en
Inventor
Michel Cardon
Francois De Keroulas
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.)
Electricite de France SA
Original Assignee
Electricite de France SA
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 Electricite de France SA filed Critical Electricite de France SA
Priority to FR7516976A priority Critical patent/FR2312330A1/en
Publication of FR2312330A1 publication Critical patent/FR2312330A1/en
Application granted granted Critical
Publication of FR2312330B1 publication Critical patent/FR2312330B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

Process consists of moving the tube at a constant speed relative to a spraying post so that one of the straight branches is subjected to a jet of metal or glass particles, then rotating the spraying post so that the semi-circular part of the tube is treated and finally moving the tube so that the other straight branch is treated. Suitable appts. incorporates a spraying post with e.g. three nozzles, arranged so as to spray all round the tube, and a rotating mechanism, a treatment chamber with inlet and outlet locks, a tube carrier and conveyors. The spraying post consists of a C shaped support with its upper branch horizontal and sliding along a bracket with a shaft which can rotate through a half turn at variable speed and in two directions. Arrangement allows uniform treatment over the whole surface of the straight and the curved parts of the hairpin tube without any need to change the setting of the spraying post during the treatment. The variables e.g. air press., size and quality of materials projected, angle to attack, proportion of material to air, speed, can be perfectly adjusted before treatment.
FR7516976A 1975-05-30 1975-05-30 Treatment of hairpin heat-exchanger tubes - to increase corrosion resistance, by blasting external surface, using movable tube-carrier and rotatable spray-post Granted FR2312330A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7516976A FR2312330A1 (en) 1975-05-30 1975-05-30 Treatment of hairpin heat-exchanger tubes - to increase corrosion resistance, by blasting external surface, using movable tube-carrier and rotatable spray-post

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7516976A FR2312330A1 (en) 1975-05-30 1975-05-30 Treatment of hairpin heat-exchanger tubes - to increase corrosion resistance, by blasting external surface, using movable tube-carrier and rotatable spray-post

Publications (2)

Publication Number Publication Date
FR2312330A1 true FR2312330A1 (en) 1976-12-24
FR2312330B1 FR2312330B1 (en) 1977-12-02

Family

ID=9155889

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7516976A Granted FR2312330A1 (en) 1975-05-30 1975-05-30 Treatment of hairpin heat-exchanger tubes - to increase corrosion resistance, by blasting external surface, using movable tube-carrier and rotatable spray-post

Country Status (1)

Country Link
FR (1) FR2312330A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105758250A (en) * 2016-02-25 2016-07-13 上海齐耀热能工程有限公司 Oil gas heat exchanger and spray pipes applicable to same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105758250A (en) * 2016-02-25 2016-07-13 上海齐耀热能工程有限公司 Oil gas heat exchanger and spray pipes applicable to same
CN105758250B (en) * 2016-02-25 2018-01-16 上海齐耀热能工程有限公司 Oil gas heat exchanger and the shower suitable for it

Also Published As

Publication number Publication date
FR2312330B1 (en) 1977-12-02

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Legal Events

Date Code Title Description
ST Notification of lapse