EP0779476A2 - Regelklappe, insbesondere für Heissgase - Google Patents

Regelklappe, insbesondere für Heissgase Download PDF

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Publication number
EP0779476A2
EP0779476A2 EP96660096A EP96660096A EP0779476A2 EP 0779476 A2 EP0779476 A2 EP 0779476A2 EP 96660096 A EP96660096 A EP 96660096A EP 96660096 A EP96660096 A EP 96660096A EP 0779476 A2 EP0779476 A2 EP 0779476A2
Authority
EP
European Patent Office
Prior art keywords
axle
control damper
flange
component
gap
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.)
Withdrawn
Application number
EP96660096A
Other languages
English (en)
French (fr)
Other versions
EP0779476A3 (de
Inventor
Pekka Junkkarinen
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.)
Sammet Dampers Oy
Original Assignee
Sammet Dampers Oy
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 Sammet Dampers Oy filed Critical Sammet Dampers Oy
Publication of EP0779476A2 publication Critical patent/EP0779476A2/de
Publication of EP0779476A3 publication Critical patent/EP0779476A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L13/00—Construction of valves or dampers for controlling air supply or draught
    • F23L13/02—Construction of valves or dampers for controlling air supply or draught pivoted about a single axis but having not other movement

Definitions

  • the object of the invention is a control damper, particularly for hot gases, which includes an insulated duct component and a blade component that rotates inside it on an axle, in which the axle is supported, at least on one side, by means of a support bearing placed outside the insulation.
  • a problem in the aforementioned type of damper is the strong flow of heat along the axle, which heats the bearing unreasonably.
  • the temperature of the flue gas is, for example 500 - 800°C, it is difficult to keep the bearing at a reasonable operating temperature (less than 150°C).
  • the axle and the gaskets are cooled by means of an air current, such as that described in the French patent publication FR 2320548.
  • the principal parts of the control damper are the duct component 2, which includes internal and external jackets 3 and 4, and the rotatable blade 2 supported by axle 7.
  • the axle is rotated by means of rotating devices 9 and 10, in a manner that is, as such, known. Between the jacket components 3 and 4 there is thermal insulation 6, through which axle 7 is led.
  • the bearing 9 is supported on an auxiliary structure resting on frame 1.
  • the bearing 9 carries axle 7, the end of which is separated from the heat section by means of heat gap 8.
  • FIG. 3 shows this heat gap in detail, in which axle 7 is shown by the first, hot axle 12, and its continuation axle 11. At the ends of these are flange components 13 and 14, which are set opposite one another, and which are kept at a distance from one another by collars 15. These collars are welded to the first component 14, while the securing proper takes place by means of bolted connections 16, 17. It is advantageous to use spring washers 19 under nuts 17, to even the compressive force.
  • Figure 4 shows the construction of the heat gap in greater detail, which is used to align the continuation axle 11 with the hot axle 12.
  • the welded collars 15 of the first flange 14 are machined in the direction of the axle, i.e. axially, in which case the axial machining 22 is made precisely at right angles to the line of the axle.
  • the ends of the collars 15 are machined for a short distance from a point touching a common circumference creating radial machining 23, which is precisely concentric with the first part 12 of the axle.
  • Axial machining 20 is correspondingly formed in the flange 13 of the second component of axle 7, and is precisely at right angles to the continuation of the axle and correspondingly concentric with machining 21.
  • the radial machining 21 and 23 correspond to one another with a suitable tolerance and determine the precise location of the continuation of the axle concentrically with the hot axle 12 and correspondingly end machining 20 and 22 align the axles precisely with one another. It is quite essential, that an undemanding level of precision of the axles, in engineering workshop terms, is sufficient.
  • the precision of the location of continuation axle 11 is, in any event, considerably better that what could be achieved in, for example, a welded joint construction. The machining thus corrects the small faults that take place in the welding of the flanges and collars.
  • the heat gap breaks the direct thermal conductivity of the first component 12 and offers a large heat dispersion surface between the flanges.
  • the internal diameter of the collars 15 is 10 - 15 % larger than the external diameter of the bolts 16.
  • the diameter of flanges 13, 14 is advantageously 250 - 300 % of the diameter of hot axle 12 and their thickness 20 - 35 % of the diameter of the hot axle 12.
  • the total cross-sectional surface of the components should be minimized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Lift Valve (AREA)
EP96660096A 1995-12-15 1996-12-12 Regelklappe, insbesondere für Heissgase Withdrawn EP0779476A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI950529U 1995-12-15
FI950529U FI2289U1 (fi) 1995-12-15 1995-12-15 Säätöpelti erityisesti kuumia kaasuja varten

Publications (2)

Publication Number Publication Date
EP0779476A2 true EP0779476A2 (de) 1997-06-18
EP0779476A3 EP0779476A3 (de) 1998-08-05

Family

ID=8542791

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96660096A Withdrawn EP0779476A3 (de) 1995-12-15 1996-12-12 Regelklappe, insbesondere für Heissgase

Country Status (2)

Country Link
EP (1) EP0779476A3 (de)
FI (1) FI2289U1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0937872A3 (de) * 1998-02-24 2003-05-07 Sammet Dampers OY Abgasleitungssystem in einem Mehrmotorsystem und eine Schliessklappe dafür
US20150168005A1 (en) * 2013-12-18 2015-06-18 Honeywell International Inc. Hvac actuator with taping flange
WO2016097678A1 (en) * 2014-12-19 2016-06-23 Norgren Limited Valve with bearing isolation
US10941960B2 (en) 2013-12-18 2021-03-09 Ademco Inc. HVAC actuator with position indicator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320548A1 (fr) 1975-08-08 1977-03-04 Secr Social Service Brit Appareil et procede pour examiner des echantillons

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320458A1 (fr) * 1975-08-08 1977-03-04 Europ Turb Vapeur Dispositif de refroidissement d'un joint
DE2801360A1 (de) * 1978-01-13 1979-07-19 Walter Dreizler Gmbh & Co Kg W Abgas-drosseleinrichtung
DE2802038C2 (de) * 1978-01-18 1982-06-16 Lorenz 7208 Spaichingen Mattes Absperrvorrichtung für Rauchabzugrohr
DE3217685A1 (de) * 1982-05-11 1985-02-14 Rische, Bernward, 8039 Puchheim Waermeverschlussklappe typ back-o-spar zur energieeinsparung (oel und gas) durch waermebalance und neuentwickelter waermeentkopplung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320548A1 (fr) 1975-08-08 1977-03-04 Secr Social Service Brit Appareil et procede pour examiner des echantillons

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0937872A3 (de) * 1998-02-24 2003-05-07 Sammet Dampers OY Abgasleitungssystem in einem Mehrmotorsystem und eine Schliessklappe dafür
US20150168005A1 (en) * 2013-12-18 2015-06-18 Honeywell International Inc. Hvac actuator with taping flange
US9623523B2 (en) * 2013-12-18 2017-04-18 Honeywell International Inc. HVAC actuator with taping flange
US10184681B2 (en) 2013-12-18 2019-01-22 Honeywell International Inc. HVAC actuator
US10941960B2 (en) 2013-12-18 2021-03-09 Ademco Inc. HVAC actuator with position indicator
WO2016097678A1 (en) * 2014-12-19 2016-06-23 Norgren Limited Valve with bearing isolation

Also Published As

Publication number Publication date
FIU950529U0 (fi) 1995-12-15
FI2289U1 (fi) 1996-01-25
EP0779476A3 (de) 1998-08-05

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