China National Standards Drafting Unit of Rubber Joint
Qualified Joint Supplier in Nuclear Power Plant
Flexible rubber compensator:
Features:
1. Small volume, light flexible, low mass, easy to install and maintain
2. It reduces structural noise transmission with strong shock absorption in survive.
This product takes advantages of high flexibility and high air impermeability and medium resistance of rubber as well as compliance and heat resistance of glass— Fabric and is prepared at both ends with metal spool and flange in connection with wind machine and air duct, which can compensate the thermal expansion by the operation of air duct and multidirections displacement. For better compliance of rubber and fabric and good sound absorption and vibration isolation, the noise and vibration passage can be reduced effectively in the operation of boiler, wind machine and air current. Because the main materials are rubber or fabric and fiber heat preservation materials of light weight without thrust in reverse and in no need of pipe supporting seat, a lot of materials are used so it has good heat resistance and corrosion resistance. In addition, rubber has better air impermeability absolutely without leakage and with lower price than metal compensator and import products.
| item | type | JGD-1 | JGD-2 | JGD-3 |
| working pressureMPa(kgf/cm 2 ) | 1.010) | 1.6(16) | 2.5(25) |
| burst pressureMPa(kgf/cm 2 ) | 2.0(20) | 3.0(30) | 4.5(45) |
| vacuumKPa(mm/Hg) | 53.3(400) | 86.7(650) | 100(750) |
| applicable temperature`C | -15`C~ 15`C under special conditions-30~+250 |
| applicable media | Air,compressed air,water ,sea water ,hot water,oil,acid ,alkali,etc. |
main connecting dimension
| nominal diameter | length
mm
| flange thickness
| quality of bolt
n
| bolt hole diameter | diameter of the central ring of the bolt | axial displacement | lateral displacement | deflection angle |
| mm | inch | extension | compression |
| 32 | 1.25 | 95 | 16 | 4 | 18 | 100 | 6 | 9 | 9 | 15° |
| 40 | 1.5 | 95 | 18 | 4 | 18 | 110 | 6 | 10 | 9 | 15° |
| 50 | 2 | 105 | 18 | 4 | 18 | 125 | 7 | 10 | 10 | 15° |
| 65 | 2.5 | 115 | 20 | 4 | 18 | 145 | 7 | 13 | 11 | 15° |
| 80 | 3 | 135 | 20 | 4 | 18 | 160 | 8 | 15 | 12 | 15° |
| 100 | 4 | 150 | 22 | 8 | 18 | 180 | 10 | 19 | 13 | 15° |
| 125 | 5 | 165 | 24 | 8 | 18 | 210 | 12 | 19 | 13 | 15° |
| 150 | 6 | 180 | 24 | 8 | 23 | 240 | 12 | 20 | 14 | 15° |
| 200 | 8 | 210 | 24 | 8 | 23 | 295 | 16 | 25 | 22 | 15° |
| 250 | 10 | 230 | 26 | 12 | 23 | 350 | 16 | 25 | 22 | 15° |
| 300 | 12 | 245 | 28 | 12 | 23 | 400 | 16 | 25 | 22 | 15° |
| 350 | 14 | 255 | 28 | 16 | 23 | 460 | 16 | 25 | 22 | 15° |
| 400 | 16 | 255 | 30 | 16 | 25 | 515 | 16 | 25 | 22 | 15° |
| 450 | 18 | 255 | 30 | 20 | 25 | 565 | 16 | 25 | 22 | 15° |
| 500 | 20 | 255 | 32 | 20 | 25 | 620 | 16 | 25 | 22 | 15° |
Henan Liwei Industry Co. Ltd, established in 1983, is a leading manufacturer specializing in processing various steam, water, wind pipe expansion joints and compensation joints, and a main base for producing crushers and superfine grinding mills.
Liwei is the appointed enterprise by the former chemical industry ministry, national construction ministry and general petrol chemical company, member unit of China Water Supply Association and Power Equipment Network Union, and joints production unit recommended by China Water Association and National Metallurgy Ministry.
Based on the scientific management mode of modern enterprises, the company owns advanced process, strong technical strength, leading production equipment and complete testing instruments and apparatus, and it has 5 senior engineers, 16 engineers, 30 senior technicians and about 300 employees. With a set of effective service system, the company has formed a service team characterized of honesty and credit, planned site for clients free of charge as well as design and installation of foundation drawings and flow drawings. It can provide professional technical training, dispatch technicians for installation and commissioning in suit.
VTM Series Grinding Mill is the new product of Liwei in 2005, which have been granted certificates of national invention patent and utility model patent (Patent No.: ZL200510017387.2). The superfine vertical roller-based mill was developed and produced by Lu Fucai, a famous mill expert at home, professor Xu Changbai from Zhengzhou University and our company, and it is popular among users after it is put into practice. The mill is an original product with power on the grinding head which borrows advanced technologies at home and abroad. It has characteristics of low vibration, low noise, low energy consumption and high output, etc.
Liwei company has been equipped with rich technical strength, excellent design and complete products test measures. We also own a set of strict management system and high-quality technicians. In 2004, we have gained ISO9001 and ISO14001 certificate.
Insisting on the rennet "Development Through Technology, Making More Friends, Creating Green Environment and Responsible For Future", the company has been devoting itself to creating top products and well serving all clients around the world.
