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Fermeture à ouverture rapide - Bandlock™ 2
Catégorie de produit :
Closures
Les fermetures GD Bandlock™ 2 constituent la conception originale et de référence pour les applications haute pression à l'échelle mondiale. Ces fermetures à ouverture rapide permettent un accès horizontal ou vertical à tout récipient sous pression en quelques secondes.
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Description
GD Engineering est un leader mondial dans la fabrication de systèmes de fermeture à ouverture rapide. Notre GD Bandlock™ 2 est la conception originale et de référence pour les applications haute pression à l'échelle mondiale, avec plus de 20 000 unités en service dans le monde.
Les fermetures GD Bandlock™ 2 permettent un accès horizontal ou vertical à tout récipient sous pression en quelques secondes. Comparées aux autres fermetures à ouverture rapide, elles peuvent être utilisées en toute sécurité et avec une rapidité remarquable : toute unité, quelle que soit sa taille, peut être ouverte ou fermée en moins d’une minute, sans outil spécifique.
La technologie assistée par ordinateur a joué un rôle important dans la conception du Bandlock™ 2. Les principales sections soumises à la pression ont été conçues pour réduire le poids en utilisant des techniques d'analyse par éléments finis et des essais de validation par jauges de contrainte, tout en respectant les exigences du code des appareils à pression primaires.
Le mécanisme de verrouillage éprouvé qui donne son nom à la gamme est un anneau de poussée conique en acier inoxydable duplex installé entre la porte et le moyeu, transmettant la charge de pression uniformément sur toute la circonférence à 360° du moyeu.
Features
Integral Safety Devices
Safety has been engineered into the Bandlock™ 2 at every stage of its design and manufacture. A hand-operated pressure warning screw integrated into the mechanism prevents the door being unlocked until it is confirmed that the vessels internal pressure has been relieved. Additional secondary safety features, such as mechanical key interlocks, can be fitted and integrated with control valve operations.
For complete safety, the locking band can be seen at all times, which satisfies design code requirements and means that the operator can actually see that the door is securely closed and locked.
Door Hinging
For horizontal use the door is double pivoted on hinges with self-lubricating bearings. The bolted fitment allows adjustment for wear and can be specified for right or left swing. Vertical installation includes a davit which enables the Bandlock™ 2 door to be lifted and swung clear of the hub. At diameters over 30", lifting eyebolts are normally fitted instead of the davit, so that the door can be lifted out of the way.
Seal Material
The standard seal is 80° shore hardness Nitrile material. Viton, HNBR and explosive decompression-resistant materials grades are also available. Temperature range is -45°C to +210°C according to the elastomer specified.
Hydrostatic Testing
Normally carried out as part of the final vessel test but an individual closure hydrotest can be provided as an option.
Unique Seal with Integral Anti-Extrusion Spring
To give a completely pressure-tight seal, the purpose designed servo acting lip seal energizes at zero pressure. For both Horizontal and Vertical Installations the seal is housed in the door away from the working area for protection and long life, and is easily fitted without tools. The one-piece molding is available in a range of elastomers and incorporates a stainless steel spring to prevent extrusion and provide a full vacuum capability.
Materials
Forged steel hubs with forged or plate doors can be supplied to meet all international material specifications. NACE Standard MR-01-75 / ISO 15156 materials are available.
Approved Design
Standard units meet ASME VIII Div.1. The requirement of other pressure vessel codes, such as ASME VIII Div. 2 and PD5500 can be accommodated. ASME Code Stamp with U-2A partial data report can be furnished as an option. Code stamping verifies shop inspection of the closure and materials by an ASME Authorized Inspector.
European Pressure Equipment Directive (97/23/EC)
The following options are available:
- Technical file submitted to vessel fabricator for incorporation into CE Marking of vessel
Applications
Typical quick opening closure applications include:
- Pipeline pig traps
- Filters
- Coalescers
- Strainers
- Separators
- Meter skid systems
- Hydrocyclones
Specifications
| Technical Specifications | ||
|---|---|---|
| Size Range | 6" to 100" Nominal diameter | |
| Class Ratings | ASME 150# through to 2500# | |
| For Pressures in excess of 2500# contact Celeros | ||
| Design Specifications | ASME VIII Division 1 | |
| ASME VIII Division 1 with 'U' Stamp | ||
| ASME VIII Division 2 | ||
| ASME VIII Division 2 with "U" Stamp | ||
| PD 5500 / BS EN 13445 | ||
| Closure Orientation | Horizontal or Vertical | |
| Termination Design Specifications | ASME B31.3, B31.4, B31.8 | |
| Other International standards are available on request | ||
| Types of Connection | Butt Welded, Butt Welded with mitre for inclined/declined vessels, reduced access or flanged to clients requirements | |
| Materials of Construction | ASTM A350 LF2 / ASME II SA350 LF2 | |
| ASTM A105 / ASME II SA105 | ||
| ASTM A694 F42 to ASTM A694 F70 | ||
| Grade 304L or 316L Stainless Steel | ||
| Duplex Stainless Steel (UNS S31803) | ||
| Elastomeric Sealing | Nitrile, Viton and Rapid Gas Decompression Resistant. Other material options available on request | |
| Standard Closure Finish | Removable rust preventative for client to finish paint after welding to vessel | |
| Special Closure Finish | Grade 316 Stainless Steel or Inconnel 625 Weld Overlay | |
| Accessories | The Bandlock™ 2 closure can be fitted with a Smith Flow Control Type DL-3 Interlock. Other types of interlocks available on request | |
| Horizontal Closures can be supplied with protective weather covers (Vertical closures are supplied with protective weather covers as standard) | ||
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