INDUSTRY COMPONENT

Support Skirt/Legs

Structural support system for evaporator vessels providing stability, load distribution, and thermal expansion accommodation.

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Component Specifications

Definition
The Support Skirt/Legs are critical structural components designed to securely mount an evaporator body/vessel to its foundation while supporting the vessel's weight, operational loads, and contents. They provide mechanical stability, distribute loads evenly to prevent stress concentrations, and accommodate thermal expansion/contraction during heating/cooling cycles. These components typically consist of cylindrical skirts or multiple legs attached to the vessel shell with reinforcing plates and anchor bolt arrangements.
Working Principle
The support system transfers vertical loads (dead weight, contents) and lateral loads (wind, seismic) from the evaporator vessel to the foundation through structural members. Skirts provide continuous support around the circumference with stress distribution, while legs create discrete support points. Both designs incorporate thermal expansion joints or sliding plates to allow movement during temperature changes without causing structural damage.
Materials
Carbon steel (ASTM A36, A283 Grade C), stainless steel (304/316 for corrosive environments), low-alloy steel for high-temperature applications. Thickness typically 10-50mm depending on vessel size and load requirements.
Technical Parameters
  • Height 500-3000mm
  • Thickness 10-50mm
  • Bolt Diameter M24-M64
  • Load Capacity 50-500 tons
  • Surface Treatment Sandblasting, primer, paint coating
  • Design Temperature -40°C to 400°C
  • Anchor Bolt Quantity 8-24 bolts
Standards
ISO 9001, ASME BPVC Section VIII, DIN 28011, EN 13445

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Support Skirt/Legs.

evaporator support vessel legs structural skirt industrial vessel supports thermal expansion joints anchor bolt design pressure vessel supports Support Skirt/Legs Support Skirt/Legs in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Evaporator Body/Vessel

The main pressure vessel that contains the liquid to be concentrated under vacuum conditions in an evaporator system.

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Vessel/Shell

The structural housing that contains and protects the desiccant material within a desiccant bed system.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Structural failure due to corrosion
  • Fatigue cracking at weld joints
  • Foundation settlement causing misalignment
  • Thermal stress exceeding design limits
  • Improper bolt tension leading to instability
FMEA Triads
Trigger: Corrosion due to chemical exposure or moisture
Failure: Reduced structural integrity leading to collapse
Mitigation: Regular inspection, protective coatings, material selection based on environment
Trigger: Thermal cycling without proper expansion accommodation
Failure: Cracking at weld joints or base connections
Mitigation: Design with adequate expansion joints, use of sliding plates, proper clearance calculations

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±2mm for bolt hole alignment, ±3° for verticality, surface flatness within 1mm/m
Test Method
Visual inspection, ultrasonic thickness testing, magnetic particle testing for welds, load testing with strain gauges

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between support skirt and support legs for evaporators?

Support skirts are continuous cylindrical structures providing 360-degree support with better stress distribution, while legs are discrete columns offering easier access for maintenance and inspection. Skirts are preferred for tall vessels with high bending moments, while legs are common for smaller vessels.

How do support skirts accommodate thermal expansion?

Support skirts incorporate expansion joints, sliding plates, or flexible connections at the base to allow vertical and radial movement during temperature changes. This prevents thermal stress buildup that could damage the vessel or foundation.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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