EP2690362A2 - Aiguillage de conduits de système de transport pneumatique - Google Patents

Aiguillage de conduits de système de transport pneumatique Download PDF

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Publication number
EP2690362A2
EP2690362A2 EP20130177396 EP13177396A EP2690362A2 EP 2690362 A2 EP2690362 A2 EP 2690362A2 EP 20130177396 EP20130177396 EP 20130177396 EP 13177396 A EP13177396 A EP 13177396A EP 2690362 A2 EP2690362 A2 EP 2690362A2
Authority
EP
European Patent Office
Prior art keywords
switching unit
line
tube
rotation
bore
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Withdrawn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
EP20130177396
Other languages
German (de)
English (en)
Inventor
Johann Kalkgruber
Johann Grossauer
Johann Hinterplattner
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.)
SOLARFOCUS Holding GmbH
Original Assignee
SOLARFOCUS Holding GmbH
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 SOLARFOCUS Holding GmbH filed Critical SOLARFOCUS Holding GmbH
Publication of EP2690362A2 publication Critical patent/EP2690362A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/006—Fuel distribution and transport systems for pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/10—Supply line fittings
    • F23K2203/105—Flow splitting devices to feed a plurality of burners

Definitions

  • the invention relates to a switching unit for selectively connecting a central line of a pneumatic conveyor line with a single line from a group of multiple stubs.
  • An important application for the switching unit according to the invention is a pneumatic conveying line for the transport of particulate or dust-like fuels, in particular fuel pellets from a storage room to a furnace.
  • the AT 507 742 B1 shows an example of a pneumatic conveying line for the transport of particulate or dust-like fuels, in particular fuel pellets from a storage room to a furnace.
  • the pneumatic conveying line comprises several suction probes, a switching unit, a pump, a solids separator and a system of pipe or hose lines.
  • the suction probes are used to introduce pellets from the storage room into a suction line. They are arranged at the bottom of the storage room and supplied with one supply air stub and one suction stub. At a suction probe air flows from the connected supply air stub line into the storage room and from there into the suction stub connected to the suction probe.
  • the air entrains pellets from the storage room into the suction stub pipe.
  • EP 1 052 456 B1 is a construction for a switching unit that common type described in which the switching unit has two parallel, mutually slidably held flat parts, wherein a planar part has a plurality of holes with connection points for a plurality of stubs and the second planar part with only two holes Connection points for the two central lines (supply air line or suction line).
  • the holes to which the central lines are connected can be positioned in alignment with a respective hole of a pair of holes to which the pair of stubs leading to a single suction probe is connected, with only one Suction probe is connected to the central lines and not a single further suction probe.
  • the central lines must be movable in the longitudinal area adjoining the switching unit, they are designed as a flexible hose, at least in this longitudinal area.
  • This flexible, "free" movable longitudinal area has limitations. The curvature may only be very small, otherwise the pellets would crumble too much when they hit the tube walls and the tube itself would soon be destroyed as well. Due to the low permissible curvature, the space requirement is disturbingly large.
  • the center lines of the individual terminals are aligned parallel to the axis of rotation and spaced therefrom on a circumference. If now the disk is rotated about the axis of rotation, one end of the pipe section remains congruent at the central connection point, while the other end follows the circumference at which the several connections are arranged.
  • the central connection point can be selectively connected to one of the connections.
  • the flow channel of the pumped medium or of the material to be conveyed in this case runs first parallel to the axis of rotation through one of the connections, then arcuately into the pipe section and at the other end in an opposite arc out of the pipe section the central connection point.
  • the flow channel thus has an s-arcuate shape.
  • the pipe section itself may be s-arcuate and be aligned at its upper end parallel to the central connection point and at its lower end parallel to the terminals, or straight and connected at an acute angle to the central connection point or the connections.
  • the flow channel remains s-arcuate in both cases.
  • the object underlying the invention is to provide a switching unit for selectively connecting a central pipeline of a pneumatic conveyor line with a single line from a group of multiple stubs.
  • the new switching unit to be created taking into account the space requirements of the lines to be connected thereto, should have a smaller or equal space requirement than the discussed switching units according to the prior art and thereby enable a smoother transport of the conveyed goods.
  • EP 0203912 A1 . GB 1382347 A EP 0057133 A1 and FR 2125231 A1 assumed in which the switching unit has two parallel to each other, slidably held flat parts, wherein a flat part is held rigid and has a plurality of holes with connection points for a plurality of stubs and wherein the second planar part has only a single bore, which opens into a cavity, to which the central line is connected, wherein the second planar part is slidably held relative to the first planar part and by sliding the one bore of the second planar part to a respective bore of the plurality of holes on the first planar part can be aligned, wherein, the junction of the cavity is formed fixed to the central line against translational movement.
  • the simple arcuate flow channel is particularly advantageous over the prior art, since the radius of curvature can be made larger with the same overall size of the device compared to the radius of curvature of the two arches in s-arc structure and a rapid change in direction by eliminating the opposite Curvatures are eliminated. As a result, the conveyed material is transported more gently and crumbling of the pellets and the clogging of the switching unit can be reduced or prevented.
  • a switching unit 3 optionally connectable to one of three stubs 2.
  • the stub lines 2 are each connected to a hole 3.1.1 through the fixed surface portion 3.1 of the switching unit 3.
  • the individual bores 3.1.1 lie on a circular line about a rotation axis 3.5 around which the second planar part 3.2 of the switching unit 3 is rotatable relative to the stationary planar part 3.1.
  • the second planar part 3.2 has at the same radial distance from the axis of rotation 3.5 only a single bore 3.2.1. This bore leads into the cavity 3.6, which is the interior of the tube 3.3. The end of the tube 3.3 facing away from the flat part 3.2 forms, in addition to the bore 3.2.1, the second opening 3.3.1 of the cavity 3.6.
  • the flow direction through the bores 3.1.1 and the bore 3.2.1 through the flat parts 3.1, 3.2 is not aligned parallel to the axis of rotation 3.5, but is from the end of each affected stub out at a very acute angle something to the axis of rotation 3.5 out inclined.
  • connection points for the stub lines 2 do not have to be oriented parallel to the axis of rotation 3.5 as shown, but at an acute angle thereto, the end faces of the stub lines 2 being closer to the axis of rotation 3.4 than the parts of the stubs adjoining the end faces second
  • the two flat parts 3.1, 3.2 are mutually displaceable by relative rotation about the axis of rotation 3.5.
  • opening 3.3.1 of the cavity 3.6 exactly coaxially positioned about the axis of rotation 3.5 is, this opening is not moved even if the position of the sheet-like part 3.2 relative to the sheet-like part 3.1 when changing from a stub 2 to another stub 2 is changed.
  • opening 3.3.1 is the open end of the continuing, designed as a pipeline, central line 1 at.
  • the latter end portions of the tube 3.3 and the conduit 1 are held against lateral deflection by a funnel-shaped shell 3.4, which is rigidly connected to the sheet-like part 3.2 and comprises said end portions on the lateral surface of the pipes.
  • the rotational movement of the flat part 3.2 and the parts rigidly connected thereto are normally driven by a mechanical device that can be addressed by a controller.
  • the device according to the invention offers comparable starting conditions with devices according to the prior art.
  • a shaft part of the planar part 3.2 coaxially with the axis of rotation 3.5 through a central hole in the flat part 3.1 projecting through a drive unit, which is attached to the side of the stubs 2 on the flat part 3.1 ,
  • the funnel-shaped shell 3.4 can also be replaced by a framework which is rigidly connected to the flat part 3.2.
  • this framework can be formed by three struts and a ring, the three struts projecting from the planar part 3.2 to the end region of the conduit 1 and wherein the ring comprises the end region of the conduit 1 and the tube 3.3.
  • the concept of the invention can also be implemented in construction methods of switching units in which the flat parts which serve to switch from one branch line to another branch line can be displaced along one another along an arbitrary curve.
  • a cavity which is bounded by the fixed sheet-like part (3.1) to which the stubs are connected and by further surfaces (3.4), is on the fixed flat part of the movable planar part (3.2) to be arranged so that it is compared with the fixed planar part of this slidingly movable.
  • One of said further surfaces (3.4), which delimit the cavity is provided with an opening, to which the continuing central line is to be connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Transport Of Granular Materials (AREA)
EP20130177396 2012-07-23 2013-07-22 Aiguillage de conduits de système de transport pneumatique Withdrawn EP2690362A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT8202012A AT513148B1 (de) 2012-07-23 2012-07-23 Umschalteinheit einer pneumatischen Förderstrecke

Publications (1)

Publication Number Publication Date
EP2690362A2 true EP2690362A2 (fr) 2014-01-29

Family

ID=48914049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20130177396 Withdrawn EP2690362A2 (fr) 2012-07-23 2013-07-22 Aiguillage de conduits de système de transport pneumatique

Country Status (2)

Country Link
EP (1) EP2690362A2 (fr)
AT (1) AT513148B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105976897A (zh) * 2016-04-26 2016-09-28 石策略 一种预分支电缆
CN106907730A (zh) * 2015-12-22 2017-06-30 天津亿阔金属制品有限公司 一种双锅炉自动加煤系统
AT520097A4 (de) * 2017-12-21 2019-01-15 Goi Tec E U Förderweiche

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2125231B1 (fr) * 1971-02-16 1976-05-28 Neu Ets
FR2498573B1 (fr) * 1981-01-28 1986-08-29 Fluidelec Sa Appareil de stockage et de destockage automatique de numeraire
AT385746B (de) * 1985-05-29 1988-05-10 Restacom Ag Rohrpoststation und/oder -weiche
AT3734U1 (de) * 1999-05-12 2000-07-25 Windhager Zentralheizung Ag Saugförderanlage für eine heizanlage
AT507742B1 (de) * 2008-12-16 2010-10-15 Froeling Heizkessel Und Behael Verfahren zum austragen von stückeligem brennstoff, insbesondere pellets, aus einem lagerraum und vorrichtung zur durchführung des verfahrens

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106907730A (zh) * 2015-12-22 2017-06-30 天津亿阔金属制品有限公司 一种双锅炉自动加煤系统
CN105976897A (zh) * 2016-04-26 2016-09-28 石策略 一种预分支电缆
AT520097A4 (de) * 2017-12-21 2019-01-15 Goi Tec E U Förderweiche
AT520097B1 (de) * 2017-12-21 2019-01-15 Goi Tec E U Förderweiche

Also Published As

Publication number Publication date
AT513148A4 (de) 2014-02-15
AT513148B1 (de) 2014-02-15

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