Plate Heat Exchanger
Plate heat exchanger is composed of a series of corrugated metal sheets combined by precision gaskets or…
Shell-and-Tube Heat Exchanger
As the most widely used inter wall heat exchange equipment, the tube heat exchanger achieves heat exchange between two media through the clever combination of tube bundles and shells.
- ISO 9001:2015
- NDA on request
- 1 pc MOQ
- DDP available
About this part
As the most widely used inter wall heat exchange equipment, the tube heat exchanger achieves heat exchange between two media through the clever combination of tube bundles and shells. Its core working principle is based on the synergistic effect of heat conduction and convective heat transfer: when a high-temperature fluid flows in the tube or shell side, heat is transferred to the low-temperature fluid on the other side through the tube wall, which is the most classic design in heat exchange equipment.
Core structure and functional components1. Decomposition of the main structure
Component Name | Features | Innovative Design Trends |
Restrain | The core heat transfer component commonly uses φ19-25mm tubes | Enhanced heat transfer tube types such as corrugated tubes and finned tubes |
Tube sheet | Key components that fix the tube bundle and separate the tube side/shell side | New technology for integral forging and explosive composite panels |
Housing | Endure pressure and provide flow space | Compact design |
Baffle | Change the shell side flow channel to increase turbulence level | New structures such as spiral baffles and mesh grilles |
Pipe box | Allocate pipeline fluid for easy maintenance | Modular Quick Open Design |
- Key Connection Technologies
Tube sheet connection: the development of the composite process of forward strength welding and adhesive expansion using traditional expansion welding technology
Sealing system: Upgrade from ordinary gaskets to high-pressure sealing solutions such as metal O-rings and C-rings
Supporting structure: The design of seismic bars has been optimized from equidistant layout to variable spacing anti vibration layout
3、 Mainstream Types and Selection Guidelines
1. Fixed tube plate
Structural features: Welding and fixing of tube plate and shell
Applicable scenarios: Cleaning media with temperature difference<50 ℃
Innovative improvement: Expansion joint design solves thermal stress problems
- U-shaped tube type
Core advantage: Natural elimination of thermal stress, allowing for free expansion
Usage restrictions: Difficulty in mechanical cleaning inside the tube
Typical application: High temperature and high pressure heat exchange, such as hydrogenation reaction systems
3. Floating head type
Unique design: One end tube plate can float freely
Outstanding advantages: Suitable for working conditions with large temperature differences (Δ T>100 ℃)
Maintenance feature: It can be pulled out as a whole for easy comprehensive maintenance
4、 Industrial application field
Energy and power sector
Nuclear power plant: Steam generator (with a single heat exchange area of 8000m ²)
Thermal power plant: high and low pressure heaters, condensers
LNG plant: -162 ℃ low-temperature heat exchange system
Petrochemical industry
Atmospheric and vacuum distillation unit: Crude oil/residual oil heat exchange network
Ethylene plant: Cracking gas rapid cooling boiler
PTA production: Acetic acid medium titanium heat exchanger
Special application scenarios
Ship power: Compact seawater cooler
Pharmaceutical industry: 316L ultra clean design
Food processing: sanitary grade fully polished structure
5、 Guidelines for Handling Common Malfunctions
Fault phenomenon | Possible reasons | Solution |
Decreased heat exchange efficiency | Scaling/blockage | Chemical cleaning or mechanical piping |
Pipeline leakage | Pipe mouth corrosion/vibration wear | Blockage or replacement of tube bundle (<10% of tubes can be blocked) |
Abnormal vibration | High flow rate/baffle failure | Adjust flow/replace baffle |
Seal leakage | Aging of gaskets/insufficient pre tightening force of bolts | Replace the sealing component |
As the heart equipment of process industry, tube heat exchangers are continuously evolving towards high efficiency, intelligence, and green direction. With the advancement of the "dual carbon" strategy, the new generation of products will achieve breakthroughs in energy efficiency improvement, lifespan extension, and convenient maintenance through the deep integration of material innovation and digital technology. It is recommended that users consider the characteristics of the medium, operating parameters, and full lifecycle costs when selecting, and prioritize the selection of new tube heat exchangers with enhanced heat transfer structures and intelligent monitoring functions to achieve the best technical and economic benefits.
Quality documentation included
- Dimensional inspection report (CMM / profile projector) for critical features
- Material certificate with heat number traceability
- Surface finish and hardness records where specified
- Photographic packing record before shipment
Related parts
FAQ
Common questions
What products does Lianyungang Huaneng Power Auxiliary Equipment manufacture?
We manufacture power plant dampers (flue gas, desulfurization, high-temperature baffle doors), slide gate valves, blind flange valves, rotary film and sponge iron deaerators, venting silencers, automatic dosing devices, steam-water sampling devices and sampling coolers, coal powder samplers, condensate recovery units, coarse and fine powder separators, and plate / shell-and-tube heat exchangers.
Which certifications does your factory hold?
We are certified to ISO 9001:2015 (quality), ISO 14001:2015 (environmental) and ISO 45001:2018 (occupational health and safety) management systems. We are also a qualified supplier of Sinopec, PetroChina, China Guodian Corporation, China Datang Corporation, CNOOC and Aluminum Corporation of China Limited.
Can you match a damper or valve to our existing ductwork?
Yes — most of our business is retrofit supply. Send us the duct cross-section, design temperature and media, or drawings, templates and photos of the existing installation. Our engineers will dimension the unit, its flange drilling and the actuator interface to bolt directly into your plant.
What leakage performance do your dampers achieve?
Louver-type double-layer dampers with sealing air achieve a leakage rate below 0.5%; fully sealed slide gates and coal mill isolation doors achieve zero internal and external leakage. Every damper is leakage-tested in the works before shipment and a factory acceptance test report is supplied.