FR2523686A1 - Support for transmission shaft - has interconnected cast-in conical shells connecting bearing to housing - Google Patents

Support for transmission shaft - has interconnected cast-in conical shells connecting bearing to housing Download PDF

Info

Publication number
FR2523686A1
FR2523686A1 FR8204635A FR8204635A FR2523686A1 FR 2523686 A1 FR2523686 A1 FR 2523686A1 FR 8204635 A FR8204635 A FR 8204635A FR 8204635 A FR8204635 A FR 8204635A FR 2523686 A1 FR2523686 A1 FR 2523686A1
Authority
FR
France
Prior art keywords
support
massive
shell
anchoring structure
thin
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
FR8204635A
Other languages
French (fr)
Other versions
FR2523686B1 (en
Inventor
Gilbert Caillot
Albert Savron
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.)
Neyrpic SA
Original Assignee
Neyrpic 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 Neyrpic SA filed Critical Neyrpic SA
Priority to FR8204635A priority Critical patent/FR2523686A1/en
Priority to AR292184A priority patent/AR229489A1/en
Priority to GR70605A priority patent/GR78095B/el
Priority to PT76339A priority patent/PT76339B/en
Priority to BR8301312A priority patent/BR8301312A/en
Priority to ES520723A priority patent/ES520723A0/en
Priority to MA19964A priority patent/MA19746A1/en
Priority to TR21552A priority patent/TR21552A/en
Publication of FR2523686A1 publication Critical patent/FR2523686A1/en
Application granted granted Critical
Publication of FR2523686B1 publication Critical patent/FR2523686B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/06—Bearing arrangements
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M5/00—Engine beds, i.e. means for supporting engines or machines on foundations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Hydraulic Turbines (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

The vertical transmission shaft (1) runs in a bearing (2). The bearing is bolted to a support flange (5) welded to a conical shell (6). This shell is, in turn, bolted to a second conical shell (8). The lower shell has two flanges at its lower end, both cast into the concrete structure. This ensures that the temperature of the support steelwork (10) (11) & (12) is always the same as that of the structure (5) and any effect of expansion is absorbed by the flexibility of the conical shells.

Description

La présente invention se rapporte à un dispositif de support de ligne d'arbres de machines, en particulier d'un groupe hydroélectrique relié à une structure d'ancrage massive, tel que le Génie Civil de la Centrale, ce groupe hydroélectrique n'étant pas du type"bulbe" c'est-à-dire du type à alternateur immergé. The present invention relates to a device for supporting a line of machine shafts, in particular a hydroelectric group connected to a massive anchoring structure, such as the Civil Engineering of the Power Plant, this hydroelectric group not being of the "bulb" type, that is to say of the submerged alternator type.

Pour de tels groupes, les supports de lignes d'arbres disposés soit de part et d'autre, soit d'un seul côté de l'alternateur, se trouvent situés dans une zone ambiante soumise à des variations thermiques dépendant des états de fonctionnement de l'alternateur. For such groups, the shaft line supports arranged either on either side or on one side of the alternator are located in an ambient zone subject to thermal variations depending on the operating states of the alternator.

Les structures d'ancrage massives, constituées généralement par le Génie Civil en béton de la Centrale, ont un comportement thermique très différent de celui des supports , généralement légers et métalliques, ce qui se traduit par d'importants efforts de liaison d'origine thermique, dont les effets se font particulièrement ressentir pendant les états de transition entre deux stades de fonctionnement prolongés, par exemple lors de la mise en route du groupe après un arrêt prolongé. The massive anchoring structures, generally constituted by the Civil Engineering in concrete of the Plant, have a thermal behavior very different from that of the supports, generally light and metallic, which results in significant thermal bonding efforts , the effects of which are particularly felt during the transition states between two prolonged stages of operation, for example when starting up the group after a prolonged stop.

Les dispositifs de support de lignes d'arbres doivent être con çus et ancrés dans le Génie Civil, de manière à ce que les efforts de liaison ne provoquent pas la détérioration de l'ancrage ou le serrage du palier. Par ailleurs, ces supports doivent présenter une grande rigidité radiale afin d'obtenir une bonne stabilité dynamique de la ligne d'arbre. Shaft line support devices must be designed and anchored in Civil Engineering, so that the connection efforts do not cause deterioration of the anchoring or tightening of the bearing. Furthermore, these supports must have high radial rigidity in order to obtain good dynamic stability of the shaft line.

Dans la plupart des installations connues actuellement, telle que par exemple celle selon le brevet français 2.282.543, les supports de ligne d'arbres sont réalisés à l'aide de bras assurant la liaison entre un anneau support de palier et le Génie Civil. In most installations currently known, such as for example that according to French patent 2,282,543, the shaft line supports are produced using arms ensuring the connection between a bearing support ring and the Civil Engineering.

Afin d'eviter que les efforts d'origine thermique ne causent des incidents, on est conduit soit à surdimensionner énormément le Génie
Civil, soit à utiliser divers dispositifs tendant à amortir la dilatation des éléments du support, tels que des liaisons radiales elastiques, des liaisons à bras attachés tangentiellement sur l'anneau supportant le palier, ou des dispositifs dans lesquels le croisillon formé par les bras du support est ancré dans le Génie Civil par l'intermédiaire de dispositifs permettant un déplacement radial tout en assurant un blocage tangentiel.In order to prevent thermal stresses from causing incidents, we are either led to oversize the Engineering enormously
Civil, either to use various devices tending to dampen the expansion of the elements of the support, such as elastic radial connections, connections with arms tangentially attached to the ring supporting the bearing, or devices in which the spider formed by the arms of the support is anchored in the Civil Engineering through devices allowing a radial displacement while ensuring a tangential blocking.

Tous ces dispositifs connus ne donnent pas ample satisfaction, soit en raison de leur trop grande complexité entraînant un court prohibitif, soit en raison de leur trop faible rigidité, soit en raison des risques d'hystérisis qui seraient dus au frottement et qui pourraient altérer le positionnement des paliers lorsque les charges varient. All these known devices do not give ample satisfaction, either because of their too great complexity resulting in a prohibitive short, or because of their too low rigidity, or because of the risks of hysterisis which would be due to friction and which could alter the positioning of the bearings when the loads vary.

Le dispositif de support conforme à l'invention ne présente pas les inconvénients de ces dispositifs connus. Il est Caractérisé en ce que la structure de support est équipée de moyens de liaison avec la structure d'ancrage massive permettant d'assurer, aux points de liaison, une surface de contact suffisante entre ces deux structures pour que leurs températures y soient toujours substantiellement egales, et il est en outre caractérisé en ce que lesdits points de liaison sont reliés au restant de ladite structure de support par une ou plusieurs surfaces minces, plalcée(si par rapport à ladite structure d'ancrage massive selon un ou des angles tel(s) qu'elle(s) travaille(nt) en flexion élastique sous l'effet des dilatations. The support device according to the invention does not have the drawbacks of these known devices. It is characterized in that the support structure is equipped with means of connection with the massive anchoring structure making it possible to ensure, at the connection points, a sufficient contact surface between these two structures so that their temperatures are always substantially there equal, and it is further characterized in that said connecting points are connected to the rest of said support structure by one or more thin surfaces, plastered (if relative to said massive anchoring structure at one or more angles such ( s) that it (s) work (s) in elastic bending under the effect of dilations.

L'invention sera mieux comprise a l'aide de la description suivante d'un exemple de réalisation relatif a un support d'arbre de groupe hydroélectrique vertical, en réference a la figure unique annexée qui en est une représentation schématique en coupe longitudinale axiale. The invention will be better understood with the aid of the following description of an exemplary embodiment relating to a vertical hydroelectric group shaft support, with reference to the single appended figure which is a schematic representation of it in axial longitudinal section.

on distingue sur la figure l'arbre vertical 1 associé à un palier 2 relié au Génie Civil 3, ou puits, en béton, par un dispositif de support 4 faisan. l'objet de la présente invention. we can see in the figure the vertical shaft 1 associated with a bearing 2 connected to the Civil Engineering 3, or concrete well, by a support device 4 pheasant. the object of the present invention.

Comme on le voit sur le dessin, le palier 2 est fixé par des liaisons démontables 13 sur un anneau métallique 5 lui-meme soudé à une première coque métallique 6 en forme de tronc de cône de révolution. As can be seen in the drawing, the bearing 2 is fixed by removable links 13 on a metal ring 5 itself welded to a first metal shell 6 in the form of a truncated cone of revolution.

Conformésont a l'invention, la coque 6, qui pourrait d'ailleurs être remplacée par un croisillon classique, est fixée par des vis 7 a une seconde coque 8,métallique et en forme de tronc de cône de révolu tionEqui est elle-meme ancrée dans le puits 3 à l'aide d'une liaison 9 constituée, corne on le voit sur le dessin par deux anneaux métalliques nervurés 10 et il bloqués dans le beton du puits 3, et par un prolongement 12 de la coque 8 plaqué contre la surface du puits et reliant les deux anneaux 10 et 11.  According to the invention, the shell 6, which could moreover be replaced by a conventional spider, is fixed by screws 7 to a second shell 8, metallic and in the form of a truncated cone of revolution Which is itself anchored in the well 3 using a connection 9 made up, horn can be seen in the drawing by two ribbed metal rings 10 and it blocked in the concrete of the well 3, and by an extension 12 of the shell 8 pressed against the surface of the well and connecting the two rings 10 and 11.

Grâce à ces dispositions, le point de liaison(10,11,12) de la structure de support 4 avec la structure d'ancrage massive 3 est pratiquement toujours à la température du puits 3 quelle que soit la température de la structure de support 4. Par ailleurs, la coque P, de par sa position oblique par rapport à'axe de la ligne d'arbres 1 et de par sa constitution en forme de surface métallique mince, constitue un ensemble souple travaillant en flexion élastique et absorbant donc totalement l'effet de la dilatation, tout en conservant au palier 2 une rigidité de support suffisante pour la bonne tenue de la ligne d'arbre. Thanks to these arrangements, the connection point (10, 11, 12) of the support structure 4 with the solid anchoring structure 3 is practically always at the temperature of the well 3 whatever the temperature of the support structure 4 Furthermore, the shell P, by its oblique position relative to the axis of the line of shafts 1 and by its constitution in the form of a thin metallic surface, constitutes a flexible assembly working in elastic bending and therefore absorbing completely the 'effect of expansion, while retaining at bearing 2 sufficient support stiffness for the good performance of the shaft line.

En outre la coque 8 absorbe le gradient thermique enrre 6 et 9.In addition, the shell 8 absorbs the thermal gradient between 6 and 9.

L'invention n'est évLde.mnent pas limitée au mode de réalisation préférentiel qui vient d'être décrit. On pourrait par exemple remplacer la coque 8 par une autre surface mince positionnée de manière à travailler en flexion, ou par un ensemble de surfaces minces positionnées suivant la même condition. Les coques 6 et 8 pourraient être confondues en une seule. La liaison 9 avec la structure d'ancrage massive pourrait être réalisée a l'aide d'autres dispositifs que celui représenté, par exemple à l'aide d'un plus grand nombre d'anneaux, nervurés ou non, ou à l'aide d'une ou plusieurs autres formes de structures assurant une surface d'échange suffisante.  The invention is obviously not limited to the preferred embodiment which has just been described. One could for example replace the shell 8 by another thin surface positioned so as to work in flexion, or by a set of thin surfaces positioned according to the same condition. Hulls 6 and 8 could be combined into one. The connection 9 with the massive anchoring structure could be carried out using other devices than that shown, for example using a greater number of rings, ribbed or not, or using one or more other forms of structure ensuring a sufficient exchange surface.

Claims (6)

REVENDICATIONS 1. Dispositif de support de ligne d'arbres(l) de machines, en particulier de machines hydroélectriques à alternateur non immergé, et à structure d'ancrage massive(3), tel que Génie Civil en béton, du type selon lequel la structure de support(4) reliant l'arbre à ladite structure d'ancrage massive a des caractéristiques thermiques différentes des caracteristiques thermiques de cette dernière, caractérisé en ce que ladite structure de support est équipée de moyens de liaison (9) avec ladite structure d'ancrage massive permettant d'assurer, aux points de liaison, une surface de contact suffisante entre ces deux structures pour que leurs températures y soient toujours substantiellement égales, et en ce que lesdits points de liaison sont reliés au restant(6,5,2) de ladite structure de support par une ou plusieurs surfaces minces(8) placée(s) par rapport à ladite structure d'ancrage massive selon un ou des angles tql(9)clra!nlfe (stravaille(nt) en flexion élastique sous l'effet des dilatations. 1. Device for supporting the line of shafts (l) of machines, in particular of hydroelectric machines with non-submerged alternator, and with massive anchoring structure (3), such as civil engineering in concrete, of the type according to which the structure support (4) connecting the shaft to said massive anchoring structure has thermal characteristics different from the thermal characteristics of the latter, characterized in that said support structure is equipped with connecting means (9) with said structure massive anchoring making it possible to ensure, at the connection points, a sufficient contact surface between these two structures so that their temperatures are always substantially equal thereto, and in that said connection points are connected to the remainder (6,5,2) of said support structure by one or more thin surfaces (8) placed relative to said massive anchoring structure at one or more angles tql (9) clra! nlfe (stravaille (nt) in elastic bending under the effect of dilatatio ns. 2. Dispositif de support selon la revendication i, caractérisé en ce que ladite surface mince est constituée par une coque de révolution (8). 2. Support device according to claim i, characterized in that said thin surface is constituted by a shell of revolution (8). 3. Dispositif de support selon la revendication 2, caractérisé en ce que ladite coque a une forme tronconique. 3. Support device according to claim 2, characterized in that said shell has a frustoconical shape. 4. Dispositif de support selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ladite liaison (9) est réaliste à l'aide d'une structure d'anneaux(10,11) bloqués dans la structure d'ancrage massive(3). 4. Support device according to any one of claims 1 to 3, characterized in that said connection (9) is realistic using a ring structure (10,11) locked in the anchoring structure massive (3). 5. Dispositif de support selon la revendication 4, caractérisé en ce que ladite liaison (9) comporte deux anneauxtlO,11), ou plus, bloqués dans la structure d'ancrage massive(3), lesdits anneaux étant reliés par une surface mince(12) plaquée contre la surface de la structure d'ancrage massive(3). 5. Support device according to claim 4, characterized in that said connection (9) comprises two rings (10, 11), or more, blocked in the massive anchoring structure (3), said rings being connected by a thin surface ( 12) pressed against the surface of the massive anchoring structure (3). 6. Dispositif selon l'une quelconque des revendications I à s, caractérisé en ce que ladite surface mince(8), ou lesdites surfaces minces, est ou sont placée(s) de manière oblique par rapport à l'axe de la ligne d'arbres(1).  6. Device according to any one of claims I to s, characterized in that said thin surface (8), or said thin surfaces, is or are placed (s) obliquely to the axis of the line d 'trees (1).
FR8204635A 1982-03-18 1982-03-18 Support for transmission shaft - has interconnected cast-in conical shells connecting bearing to housing Granted FR2523686A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR8204635A FR2523686A1 (en) 1982-03-18 1982-03-18 Support for transmission shaft - has interconnected cast-in conical shells connecting bearing to housing
AR292184A AR229489A1 (en) 1982-03-18 1983-02-22 IMPROVEMENTS IN A MACHINE TREE LINE SUPPORT DEVICE
GR70605A GR78095B (en) 1982-03-18 1983-02-24
PT76339A PT76339B (en) 1982-03-18 1983-03-04 DEVICE FOR SUPPORTING TREE LINE OF MACHINERY, IN PARTICULAR HYDROELECTRIC
BR8301312A BR8301312A (en) 1982-03-18 1983-03-16 MACHINERY AXIS LINE SUPPORT DEVICE
ES520723A ES520723A0 (en) 1982-03-18 1983-03-17 IMPROVEMENTS IN MACHINE TREE LINE SUPPORT DEVICES.
MA19964A MA19746A1 (en) 1982-03-18 1983-03-17 LINE SUPPORT DEVICE FOR SHAFTS OF MACHINES IN PARTICULAR HYDROELECTRIC.
TR21552A TR21552A (en) 1982-03-18 1983-03-18 FLOOR SUPPORT ASSEMBLY OF THE SPINDLE OF HYDROELECTRIC MACHINES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8204635A FR2523686A1 (en) 1982-03-18 1982-03-18 Support for transmission shaft - has interconnected cast-in conical shells connecting bearing to housing

Publications (2)

Publication Number Publication Date
FR2523686A1 true FR2523686A1 (en) 1983-09-23
FR2523686B1 FR2523686B1 (en) 1984-05-11

Family

ID=9272144

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8204635A Granted FR2523686A1 (en) 1982-03-18 1982-03-18 Support for transmission shaft - has interconnected cast-in conical shells connecting bearing to housing

Country Status (8)

Country Link
AR (1) AR229489A1 (en)
BR (1) BR8301312A (en)
ES (1) ES520723A0 (en)
FR (1) FR2523686A1 (en)
GR (1) GR78095B (en)
MA (1) MA19746A1 (en)
PT (1) PT76339B (en)
TR (1) TR21552A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB762245A (en) * 1954-07-27 1956-11-28 English Electric Co Ltd Improvements in and relating to thrust bearing supports for hydro-electric vertical shaft machines
FR1569671A (en) * 1968-02-01 1969-06-06
FR2282543A1 (en) * 1974-08-21 1976-03-19 Siemens Ag Shaft bearings for vertical generating sets - radial props with extreme ends resting resiliently against machine well walls
DE2640499A1 (en) * 1975-09-11 1977-03-31 Hitachi Ltd THRUST MOUNTING DEVICE
FR2441942A1 (en) * 1978-11-15 1980-06-13 Bbc Brown Boveri & Cie CARRIER AND GUIDE SPACER FOR THE HOUSING OF A ROTOR OF A VERTICAL ELECTRIC MACHINE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB762245A (en) * 1954-07-27 1956-11-28 English Electric Co Ltd Improvements in and relating to thrust bearing supports for hydro-electric vertical shaft machines
FR1569671A (en) * 1968-02-01 1969-06-06
FR2282543A1 (en) * 1974-08-21 1976-03-19 Siemens Ag Shaft bearings for vertical generating sets - radial props with extreme ends resting resiliently against machine well walls
DE2640499A1 (en) * 1975-09-11 1977-03-31 Hitachi Ltd THRUST MOUNTING DEVICE
FR2441942A1 (en) * 1978-11-15 1980-06-13 Bbc Brown Boveri & Cie CARRIER AND GUIDE SPACER FOR THE HOUSING OF A ROTOR OF A VERTICAL ELECTRIC MACHINE

Also Published As

Publication number Publication date
ES8402062A1 (en) 1984-01-01
PT76339A (en) 1983-04-01
MA19746A1 (en) 1983-10-01
FR2523686B1 (en) 1984-05-11
TR21552A (en) 1984-09-27
PT76339B (en) 1986-01-13
ES520723A0 (en) 1984-01-01
AR229489A1 (en) 1983-08-31
GR78095B (en) 1984-09-26
BR8301312A (en) 1983-11-29

Similar Documents

Publication Publication Date Title
EP0214875B1 (en) Damping element limiting the angular deflection of turbo machine rotor vanes
CA2493065C (en) Seal device for high pressure turbine of a turbine engine
FR2519101A1 (en) BEARING SUPPORT STRUCTURE
FR2752024A1 (en) Support for shaft subject to onset of out of balance
FR2701741A1 (en) Constant velocity joint, in particular of the tripod type.
FR2735535A1 (en) TURBOMOLECULAR PUMP
EP0374003A1 (en) Turbo machine with a braking device between rotor and exhaust sump
FR2523686A1 (en) Support for transmission shaft - has interconnected cast-in conical shells connecting bearing to housing
FR2494762A1 (en) FLOWER WITH ROCK COMPRISING MEANS OF SOUNDPROOFING
FR2466675A1 (en) VIBRATION ISOLATORS SUCH AS SLEEVES AND WASHERS
KR100863654B1 (en) Roll Arrangement
EP0395110B1 (en) Rotor support structure for a turbine with an axial outlet, the bearing at the outlet side being integrated in the foundation
FR2574139A1 (en) MEANS FOR ATTACHING A BEARING TO A TREE
FR2576991A1 (en) IMPROVEMENTS RELATING TO DISCS FOR DISC BRAKES
FR2529289A1 (en) COUPLING FOR THE SIMULTANEOUS CONNECTION OF MULTIPLE TIGHTLY NEIGHBORING TUBULAR CONDUITS
FR2590738A1 (en) ARMORED CABLE EQUIPPED WITH A SUPPORT OR REINFORCEMENT COLLAR
FR2544454A1 (en) DEVICE FOR THE REMOVABLE FASTENING OF AN INTERNAL STRUCTURE IN AN ENVELOPE SUCH AS A CONDUIT OR CONTAINER
CA1198095A (en) Installation of turbo-alternators
CH432664A (en) Device for supporting fuel elements in vertical channel atomic cells
FR2525710A1 (en) Torque limiter for shaft coupling - connecting screws have narrow central throat that break above predetermined torque
FR2514581A1 (en) DEVICE FOR FIXING COIL HEADS OF THE STATORIC WINDING OF AN ELECTRIC MACHINE
FR2699239A1 (en) Fluid film aerodynamic bearing.
FR2647854A1 (en) Wheel-shaft connection, particularly for a cooling pump of a nuclear reactor
CA1124299A (en) Large diameter synchronous electric machine
FR2734105A1 (en) Stator for piezoelectric rotary coupling

Legal Events

Date Code Title Description
CA Change of address
CD Change of name or company name