Fixed Tube Sheet Heat Exchanger

Product Introduction

A fixed tube sheet heat exchanger is a type of shell and tube heat exchanger, where the tube sheets at both ends are rigidly connected to the shell, resulting in a simple structure.

Product Advantages

Strong Structural Reliability: The tube bundle and tube sheets are fully welded, completely eliminating any leakage risks at the connection points.
Outstanding Pressure Capacity: Tube sheets are 38-60mm thick, with a pressure resistance of ≥4.0MPa, meeting the requirements of high-pressure steam and other demanding conditions.
High Fatigue Resistance: The seamless, integrated shell can withstand 10⁶ cycles of thermal and pressure fluctuations.
Thermal Stress Compensation: Expansion joint interfaces are reserved to absorb 3-15mm displacement, preventing deformation due to temperature differences.

Product Customization

Material Options: Carbon Steel/Stainless Steel/Titanium Alloy/Alloy Steel
Inlet and Outlet Connection Types: Flange Connection/Threaded Connection/Welded Connection
Heat Transfer Tube Types: Plain Tubes/Spiral Tubes/Enhanced Tubes
Heat Transfer Methods: Liquid-Liquid/Liquid-Gas/Gas-Gas
Corrosion Protection Coating: Epoxy Coating/Polyurethane Coating/PTFE Coating

About Us

Wuxi Lanxing Pressure Vessel Co., Ltd. is located in Wuxi, an eastern manufacturing hub of China, specializing in the design and manufacturing of pressure vessels and heat exchangers. Our factory covers 15,000 square meters and is equipped with modern production workshops, a non-destructive testing center, a physical and chemical laboratory, and a welding laboratory, with a professional technical team of 130 members.

International Certifications
We hold multiple international certifications to ensure our products meet the standards of major global markets:
ASME U & U2 - American Pressure Vessel Manufacturing Qualification
PED 2014/68/EU - EU Pressure Equipment Directive Certification
ISO 9001:2015 - Quality Management System Certification
ISO 3834-2 - Welding Quality System Certification
DOSH - Malaysia Pressure Vessel Certification
JIS - Japanese Industrial Standards Certification

Global Market Experience
Our products are widely used in industries such as petrochemical, refining, natural gas, power generation, food, and pharmaceuticals, and have been successfully exported to over 60 countries and regions, including Europe, Japan, Southeast Asia, and the Middle East.

Maintenance and Care

Internal Tube Cleaning: Regularly flush with mechanical balling or high-pressure water.
Shell-Side Cleaning: Only use chemical solvents for circulating cleaning.
Leak Detection: Tube sheet welds must undergo regular non-destructive testing (RT/PT).
Expansion Joint Inspection: If expansion joints are installed, the fatigue condition of the bellows should be carefully checked.

Installation, Debugging And Operation Precautions

Alignment and Support: Ensure the casing and pipes are aligned during installation. The tube sheet should not be subjected to excessive external force. Expansion joints or flexible couplings are recommended for inlet and outlet pipes.
Pressure and Temperature Increase Procedure: For initial commissioning, a slow temperature increase and phased pressurization should be adopted to reduce sudden changes in thermal stress.
Monitoring Items: During operation, monitor the inlet and outlet temperature difference, pressure drop, pressure on each side, and signs of leakage. If any abnormalities are found, immediately stop the machine and inspect it.

FAQ

Q: What fluids are suitable for heat exchange in a fixed tube sheet heat exchanger?
A: It is suitable for applications where the fluids on both sides are clean, non-corrosive, have a small temperature difference, or where both sides have high pressure and a high requirement for sealing.

Q: Can a third-party performance test be requested when purchasing a fixed tube sheet heat exchanger?
A: Yes, we support third-party organizations to witness test the heat exchanger's thermal performance (such as heat transfer rate, outlet temperature).

Q: What is the shortest production cycle for a fixed tube sheet heat exchanger if an urgent order is needed?
A: The shortest production cycle depends on material availability and size. For commonly used materials and standard sizes, the production time can be compressed to 4-6 weeks.

Q: Can video guidance for installation and commissioning of the fixed tube sheet heat exchanger be provided?
A: Yes, we provide detailed installation manuals and remote video guidance services to ensure correct installation.

Q: Can the heat exchanger be designed to meet specific explosion-proof standards (such as ATEX)?
A: Yes, if the fluid medium is flammable or explosive, we can provide heat exchangers that meet explosion-proof standards such as ATEX or IECEx.

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