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OEM ODM Fiber Fabric Compensators / Expansion Joints Non Metallic Bellows
OEM ODM Fiber Fabric Compensators / Expansion Joints Non Metallic Bellows
OEM ODM Fiber Fabric Compensators / Expansion Joints Non Metallic Bellows
OEM ODM Fiber Fabric Compensators / Expansion Joints Non Metallic Bellows
Specifications
Brand Name :
HNEENERGY
Model Number :
fiber fabric
Place of Origin :
China
MOQ :
1
Payment Terms :
L/C, T/T, Western Union, MoneyGram
Certification :
ASME, ANSI, DIN, JIS,ISO etc.
Material :
steel, Fiber fabrics, silicone rubber cloth, fluororubber cloth, PTFE film, PTFE cloth, ceramic cloth, etc
Connection :
Welding
Customized support :
OEM, ODM
Description

1. Expansion joints(compensators)

  • Introduction

Expansion joints, also known as compensators, are vital components comprising one or more bellows as the primary elastic element, along with connectors, supports, flanges, conduits, and other accessories. These flexible structures are installed on vessel shells or pipelines to counteract additional stresses resulting from temperature fluctuations and mechanical vibrations. By harnessing the expansion and contraction of the bellows, they accommodate dimensional changes in pipelines, conduits, and vessels caused by thermal expansion, contraction, axial, lateral, and angular displacements.

Apart from compensating for dimensional changes, expansion joints also serve purposes such as noise and vibration reduction and supporting heating supply systems. To prevent damage to heating pipelines due to thermal expansion, compensators are installed to mitigate the stress on the pipeline walls and the forces exerted on valves or support structures.

Due to their ability to freely expand and contract, expansion joints offer advantages like reliable operation, high performance, and compact structure. As a result, they find widespread use in chemical engineering, metallurgy, nuclear energy, and other industries. Expansion joints come in various forms, with U-shaped expansion joints being the most common, followed by Ω-shaped and C-shaped joints for vessel applications. For pipeline use, they are categorized based on structural compensation into universal, pressure balanced, hinged, and gimbal expansion joints.

  • Classification

Main Item Classification Description
Metal Expansion Joint Elbow Expansion Joint Bend the pipe into a U-shaped or other shape, also known as tension bends,are a type of expansion joint that utilizes the elastic deformation ability of the form to compensate. Its advantages are good strength, long service life, and on-site production.The disadvantages are space-consuming, high steel consumption, and high friction resistance. This type of expansion joint is widely used in various steam piping and long pipes.

Bellows Expansion Joint

 A bellows expansion joint is an expansion joint made of metal bellows. It can expand and contract along the axial direction of the pipeline, and also allows a small amount of bending. In order to prevent exceeding the allowable compensation amount, protective rods or rings are installed at both ends of the bellows, and guide supports are installed on both ends of the connected pipelines. There are also angular and lateral expansion joints, which can be used to compensate for rotational deformations and lateral deformations of pipelines. The advantages of these expansion joints are space-saving, material-saving, easy standardization, and mass production, but the disadvantage is the relatively short lifespan. Bellows expansion joints are generally used in short pipelines with low temperature and pressure. With the improvement of bellows production technology, the application scope of this type of expansion joint is expanding. Currently, bellows expansion joints can be used in pipe systems with a maximum pressure of 6.0 MPa.
Slip-Type Expansion Joint The slip-type expansion joint has inner and outer sleeves for axial movement, sealed with stuffing box. It compensates for pipeline's axial expansion and rotation, suitable for hot water, steam, and grease. The inner sleeve slides against the outer one to adjust for thermal expansion. Connected to the pipeline, it uses a high-performance self-sealing seal. A new synthetic seal material between the sleeves resists heat, corrosion, and aging (-40°C to 150°C, up to 350°C under special conditions), ensuring sliding and preventing leakage.
Non-metallic Expansion Joint Rubber Expansion Joint Composed of rubber and rubber-fiber composite materials, steel flanges, sleeves, and insulation materials, it is mainly used for flexible connections between various fans and ducts. Its functions include shock absorption, noise reduction, sealing, medium resistance, easy displacement and installation. It is an ideal accessory for shock absorption, noise reduction, smoke and dust removal in the field of environmental protection.
Fabric Expansion Joint The fabric expansion joint is mainly made of fiber fabric, rubber, and other high temperature resistant materials. It can compensate for the vibration and deformation of fans and ducts.Fabric expansion joints can compensate for axial, lateral, and angular products, with features such as no thrust, simplified support design, corrosion resistance, high temperature resistance, noise reduction, vibration reduction,and others.It is particularly suitable for hot blast pipes and smoke and dust pipeline of power plant.The non-metallic compensator's fiber fabric and insulation cotton itself have the functions of sound absorption and vibration isolation, therefore they can effectively reducing the noise and vibration of boiler, fan, and other systems. Simple structure, light weight, and easy maintenance.

  • Special materials

Super Austenitic Stainless Steel:254SMO,904L,AL6XN

Duplex Stainless Steel :2205 Dual phase steel (S31803)

Nickel Based Alloy Steel:INCOLOY800/800H/800HT/840/825,INCONEL600/601/690/625/X-750

Hastelloy Alloy C-276/C-22/X,MONEL400/K500

Pure Nickel:N4,N6(Ni200,Ni201)

Titanium Plate For Stamping:GR1,GR2,TA1,TA2

Austenitic Stainless Steel:SUS304,SUS304L,SUS316,SUS316L,SUS310S,SUS321,SUS316Ti

2. Non-metallic Expansion joints

  • Non-metallic compensators/expansion joint types

Non-metallic compensators encompass various types, including straight cylindrical, compound, angular, and square expansion joints.

Rectangular non-metallic compensators, primarily employed in power plant flue ducts, serve to absorb thermal displacement and shock. These compensators can be connected via flanges or nozzles.

  • Common structural types of non-metallic compensators (non-metallic expansion joints) include the following six:

OEM ODM Fiber Fabric Compensators / Expansion Joints Non Metallic Bellows

  • Technical parameters of non-metallic compensators (non-metallic expansion joints):

Compensating segment length(h/m)

 100 200 250 300 350 400 450 500 550 600 650 700 800 900

Compensation volume(nm)

 Axial displacement (x/m) -30 -50 -75 -85 -105 -125 -130 -140 -165 -175 -195 -205 -225 -240
+15 +20 +30 +36 +45 +45 +50 +55 +58 +62 +66 +70 +74 +80
Lateral displacement (y/m) ±10 ±15 ±25 ±30 ±45 ±50 ±60 ±68 ±7o ±73 ±75 ±80 ±85 ±90
Working Temperature (t°C) a=100-200,b=200-300,c=300-450,d=450-500,e=500-600,f=600-700,g=700-1000
Working pressure P(Kpa) ±10~±300,if the user requires, the pressure beyond the range, can be designed separately.
Flow rate a——b v=8——15
c——d v=8——20

  • Applied range of non-metallic compensators (non-metallic expansion joints):

Gas turbine exhaust duct

Desulfurization system

Flue ducts and exhaust systems of various industries

Coal-fired boilers, circulating sulfurized bed boilers

Flue ducts of waste heat boilers

3. Round Non-metallic Compensator/Expansion Joint

Circular Non-metallic Compensators/Expansion Joints offer several key advantages:

  • Multi-Directional Compensation: They excel in compensating for thermal expansion in multiple directions, surpassing metal counterparts limited to single-axis compensation.
  • Alignment Correction: These compensators effectively correct mounting errors commonly encountered during pipeline connections.
  • Noise and Vibration Reduction: Their fiber fabric and insulation cotton inherently absorb sound and isolate vibrations, reducing noise and vibration in systems like boilers and fans.
  • Absence of Reverse Thrust: Made primarily of fiber fabric, they eliminate force transmission, simplifying design, reducing the need for large supports, and saving on materials and labor.
  • High-Temperature and Corrosion Resistance: Selected fluoroplastics and silicone materials provide excellent resistance to high temperatures and corrosion.
  • Superior Sealing: With a robust production and assembly system, these compensators ensure leak-free performance.
  • Lightweight and Simple Installation: Their lightweight and straightforward structure make installation and maintenance convenient.
  • Cost-Effective: They are competitively priced compared to metal compensators and offer better quality than imported products, providing good damping effects.
  • Enhanced Sealing Performance: Utilizing large flanges without gaskets reduces costs and allows for direct installation.
  • Long Service Life: With their durable construction and reliable performance, these compensators offer a long service life.
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OEM ODM Fiber Fabric Compensators / Expansion Joints Non Metallic Bellows

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Product Detail
Brand Name :
HNEENERGY
Model Number :
fiber fabric
Place of Origin :
China
MOQ :
1
Payment Terms :
L/C, T/T, Western Union, MoneyGram
Certification :
ASME, ANSI, DIN, JIS,ISO etc.
Contact Supplier
OEM ODM Fiber Fabric Compensators / Expansion Joints Non Metallic Bellows
OEM ODM Fiber Fabric Compensators / Expansion Joints Non Metallic Bellows

Beijing Hownew Energy Technology Group Co., Ltd

Verified Supplier
2 Years
beijing, beijing
Since 2018
Business Type :
Manufacturer, Agent, Importer, Exporter, Trading Company
Main Products :
Carbon steel Pipe fittings, Stainless steel Pipe fittings, Alloy steel Pipe fittings
Total Annual :
15000000-18000000
Employee Number :
70~100
Certification Level :
Verified Supplier
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