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WO2000017565A1 - Dispositif comprenant une lampe ultraviolette et un systeme de refroidissement, servant notamment a regarnir des tuyaux - Google Patents

Dispositif comprenant une lampe ultraviolette et un systeme de refroidissement, servant notamment a regarnir des tuyaux Download PDF

Info

Publication number
WO2000017565A1
WO2000017565A1 PCT/SE1999/001644 SE9901644W WO0017565A1 WO 2000017565 A1 WO2000017565 A1 WO 2000017565A1 SE 9901644 W SE9901644 W SE 9901644W WO 0017565 A1 WO0017565 A1 WO 0017565A1
Authority
WO
WIPO (PCT)
Prior art keywords
lamp
glass
glass cylinder
cylinder
double
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.)
Ceased
Application number
PCT/SE1999/001644
Other languages
English (en)
Inventor
Börje Persson
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.)
Inpipe AB
Original Assignee
Inpipe AB
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 Inpipe AB filed Critical Inpipe AB
Priority to AU63800/99A priority Critical patent/AU6380099A/en
Publication of WO2000017565A1 publication Critical patent/WO2000017565A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/18—Appliances for use in repairing pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/26—Lining or sheathing of internal surfaces
    • B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings

Definitions

  • This invention relates to an apparatus for use in different industrial processes, like for instance curing of plastic when lining leaking pipe lines, the apparatus comprising a lamp for emitting UV-light, which is enclosed in a first glass cylinder, and the 5 apparatus comprising an arrangement for cooling by forced air stream.
  • UN-lamps of the type discharge lamps are based on the fact that light is emitted from a gas when an electric current flows through the gas. That means that a miniature 10 lightening is created between two electrodes which are enclosed in a quartz tube which also contains inert gases and evaporated metal vapours.
  • a coupling device controls the current through the lamp so that a constant electric arc instead of separate lightenings is obtained.
  • the temperature of the electric arc is in the size of 4000 to 4500°C and it is the heat from the electric arc that evaporates the different basic elements being in the 15 lamp so that they are excited.
  • the plasma then emits light with different wave lengths, which are characteristic for the basic elements being in the lamp.
  • Another drawback with the known apparatus is that there is a great risk that an inflammable gas, being in the apparatus area, shall penetrate into the space between the UV-lamp itself and the glass cylinder and be set on fire by the hot UV-lamp.
  • This invention intends to eliminate the problems with known technique and to provide an apparatus, which has such a design that its outer temperature can be reduced to such a low level that the risk of a potential fire and/or damages on surrounding material is eliminated.
  • the first glass cylinder is enclosed in a second glass cylinder in such a way that an annular space is created between the two glass cylinders;
  • the mentioned space is partly connected to an inlet for the mentioned air stream, partly connected to an outlet for the mentioned air stream. Due to that fact the amount of cooling air through the apparatus can be multiplied without deteriorating the light emission of the plasma of the UV-lamp. When testing the new apparatus, it has appeared to be possible to bring down the temperature of the outer parts of the apparatus to 50 - 250°C.
  • Fig. 1 shows an apparatus according to the first embodiment
  • Fig. 2 shows an apparatus according to the second embodiment.
  • the first embodiment according to fig. 1 has an oblong UV-lamp 1 , which is arranged inside a first glass cylinder 2, which in its turn is arranged inside a second glass cylinder 3, preferably co-axially with each other. Both end portions 4, 5 of the two cylinders are connected with each other and closed, whereby there is created an annular space 6 between the two glass cylinders 2, 3. This space is at the one pair 4 of end portions in connection with the surroundings via an inlet pipe 7, whereas the space at the second pair 5 of end portions is in connection with an outlet pipe 8. Of course, the inlet and outlet pipes 7, 8 can be swifted regarding the function.
  • the UV-lamp has an outer temperature of 800 - 900°C, but due to the mentioned cooling arrangement, the outer temperature of the apparatus can be reduced to 50-250°C without deteriorating the light emission of the plasma of the UV-lamp.
  • the two glass cylinders 2, 3 suitably designed like a double-walled circular-cylinder of quartz glass, the inner cylinder- wall constituting the first glass cylinder, whereas the outer cylinder- wall constituting the other glass cylinder.
  • the UV-lamp 1 which preferably also is made of quartz glass, enclosed in the mentioned, double-walled glass cylinder 2, 3.
  • a circular ceramic plate 9, 10 both of which are tightened against the inside of glass cylinder by ceramic cement. Due to that fact there is formed a completely gas-tight enclosing for the UV-lamp.
  • the great advantage with this arrangement is that no chemicals can penetrate in towards the UV-lamp and its glow-hot surface of quartz glass, and therefore the risk of fire, due to that fact, is further reduced.
  • each end of the oblong UV-lamp 1 there is arranged an electrode 11, 12 which gas-tightly goes through the mentioned ceramic plates 9, 10 and via a ceramic plug 13, 14 is in connection with an electric cable 15, 16.
  • the two electrodes are designed like a "S" and become in that way flexible. This has been made in order that the electrodes shall be able to take up the length expansion that the UV-lamp is exposed to and that is greater than that of the double- walled glass cylinder 2, 3.
  • the embodiment according to fig. 2 has great similarities with that one according to fig. 1.
  • the embodiment according to fig. 2 comprises a UV-lamp 1 which is enclosed in a double- walled circular-cylinder 2, 3 of quartz glass, which has an inlet pipe at its one end portion and an outlet pipe at its other end portion.
  • the difference between the two embodiments is the way to enclose the UV-lamp within the double- walled glass cylinder 2, 3.
  • the two end portions 1 A and IB of the UV- lamp have the design of a pipe, each of which pipes being gone through by an electrode and itself going through a ceramic plate 17, 18, which correspond to the ceramic plates 9, 10 of the first embodiment, and which in a corresponding way is connected to a ceramic plug 19, 20 with an electric cable belonging to the plug.
  • the mentioned plates are placed a small distance inside respective end portion of the glass cylinder 2, 3.
  • a cooling and sealing ring 23, 24 of copper wool which is cooled by the mentioned cooling air and which is sealing between the centrically arranged ceramic plug 19, 20 and the inner surface of the glass cylinder 2, 3.
  • a cup-shaped copper washer 25, 26 which accordingly cooperates with the cooling and sealing ring and which at the same time makes the sealing between the lamp and the double-walled cylinder.
  • the long and narrow form of the UV-lamp depends on the fact that there is a difference regarding the coefficient of the expansion of length between the electrodes of the UV-lamp and the casing, made of quartz glass, of the UV-lamp. The difference is so great that the quartz glass is burst to pieces if the temperature exceeds ca 350°C. (This fact has validity for all lamps of this type). Therefore, the electrodes, where the casing of the UV-lamp begins to become narrower, extend in pipes of quartz glass until the electrodes have passed the ceramic end plates which accordingly function as heat- reflecting shields. First in the ends where the temperature has sunken well under 350°C, the electrodes in the form of thin foils of molybdenum pass through the quartz glass and are contacted with the connection cables. Thereafter, the end portions of ceramic are cemented over the actual contacting means.
  • This apparatus is not gas-tight like the apparatus according to the first embodiment. That means that theoretically chamicals can penetrate into the hot UV- lamp and be set on fire, but due to the arrangement with a ceramic plate/a metallic sealing/a metallic gable, possible fire will not be spread outside the space of the UV- lamp.
  • the metallic gable is cooled down by the cooling air before the same passes the double-walled cooler. Possible inflammable gas having come into the annular space between the UV-lamp itself and the double- walled cooler of quartz glass and takes fire is extinguished when the burning flame shall pass through the very narrow opening between the copper washer and the double- walled cooler of quartz glass and through the ring of copper wool.
  • An advantage with the second embodiment is that the double-walled glass cylinder, used as a cooler, can be maintained when exchanging the UV-lamp.
  • UV-lamp could have another form than the oblong form, mentioned in the text.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

L'invention concerne un dispositif destiné à être utilisé dans le cadre de différents procédés industriels, comme par exemple le durcissement du plastique lors du garnissage de canalisations non étanches. Ledit dispositif comprend une lampe, destinée à émettre une lumière ultraviolette, qui est contenue dans un premier cylindre en verre ; et un système de refroidissement par courant d'air pulsé. Le dispositif selon l'invention est caractérisé en ce que d'une part le premier cylindre (2) en verre est contenu dans un second cylindre (3) en verre de manière qu'un espace annulaire (6) soit créé entre les deux cylindres ; et en ce que d'autre part cet espace (6) est relié en partie à un orifice (7) d'admission destiné au courant d'air susmentionné, en partie à un orifice (8) de sortie destiné audit courant d'air.
PCT/SE1999/001644 1998-09-21 1999-09-21 Dispositif comprenant une lampe ultraviolette et un systeme de refroidissement, servant notamment a regarnir des tuyaux Ceased WO2000017565A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU63800/99A AU6380099A (en) 1998-09-21 1999-09-21 Armature for e.g. relining of pipes comprising an ultraviolet lamp and an arrangement for cooling

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9803208-9 1998-09-21
SE9803208A SE9803208D0 (sv) 1998-09-21 1998-09-21 Armatur

Publications (1)

Publication Number Publication Date
WO2000017565A1 true WO2000017565A1 (fr) 2000-03-30

Family

ID=20412672

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1999/001644 Ceased WO2000017565A1 (fr) 1998-09-21 1999-09-21 Dispositif comprenant une lampe ultraviolette et un systeme de refroidissement, servant notamment a regarnir des tuyaux

Country Status (3)

Country Link
AU (1) AU6380099A (fr)
SE (1) SE9803208D0 (fr)
WO (1) WO2000017565A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016528023A (ja) * 2013-05-28 2016-09-15 アプライド ライト テクノロジーズ インコーポレイテッド 管状又は他の包囲された構造体の内面の熱処理装置
US11118716B2 (en) 2017-03-03 2021-09-14 Ina Acquisition Corp. Curing device for curing a pipe liner

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5423630A (en) * 1992-04-07 1995-06-13 Ashimori Industry Co., Ltd. Method and apparatus for repairing a pipeline
WO1997022460A1 (fr) * 1995-12-20 1997-06-26 John Wood Structures stratifiees

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5423630A (en) * 1992-04-07 1995-06-13 Ashimori Industry Co., Ltd. Method and apparatus for repairing a pipeline
WO1997022460A1 (fr) * 1995-12-20 1997-06-26 John Wood Structures stratifiees

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016528023A (ja) * 2013-05-28 2016-09-15 アプライド ライト テクノロジーズ インコーポレイテッド 管状又は他の包囲された構造体の内面の熱処理装置
EP3003548A4 (fr) * 2013-05-28 2017-03-01 Applied Light Technologies Inc. Appareil de traitement thermique d'une surface interne d'une structure tubulaire ou d'une autre structure fermée
US11118716B2 (en) 2017-03-03 2021-09-14 Ina Acquisition Corp. Curing device for curing a pipe liner

Also Published As

Publication number Publication date
AU6380099A (en) 2000-04-10
SE9803208D0 (sv) 1998-09-21

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