Flexible diaphragm couplings

1.Main products — structure types:

  • Connected diaphragm couplings

  • Welded diaphragm couplings

2.Product series — rich applications:

  • HM /DM ——    High performance/low bending moment diaphragm coupling products

  • TP / TM —— Personalized/engineering customized diaphragm couplings

3.Product presentation — about diaphragm:

All-metal contour diaphragm — a wise selection for high performance couplings. It is particularly suitable for applications of higher speed/ large compensation. Since the 1950s, diaphragm couplings have been widely used in various industries, especially in various core equipment in the natural gas and petrochemical industries. 

The all-metal contour diaphragm couplings feature light weight, no lubrication, high torsional stiffness, large compensation capacity, and no limit of torque capacity, and they are the prior choice for high power turbine units and high speed test bench applications, especially for high speed and high compensation applications.

There are two main types of contour diaphragm couplings in the world: welded type and connected type. Wuxi TRUMY can provide direct support for new units with connected stainless steel diaphragms, also can provide maintenance service for vacuum electron beam welding diaphragms.

4.Development of products — Outstanding feature of TRUMY

High speed diaphragm couplings of TRUMY provide you with reliable flexible connection solutions, and factory-made assemblies ensure excellent balance and product performance. Interference fit spigot design and pre-screwed bolts enable the products to maintain stable balance repeatability even after repeated reassembly, and can also substantially shorten the time for field maintenance.

Starting with the oil and gas industry, diaphragm couplings are increasingly being used as solutions for critical equipment in more and more areas. In addition that the TRUMY product design and manufacturing can meet the specifications of various industries, our engineers will also take into account the practical applicability of different industries in the design of tolerance, material selection, balance accuracy and inspection methods, to improve product performance and increase customer asset value.

5.Product achievements — Application in engineering cases

So far, as a major manufacturer of diaphragm couplings in China mainland, Wuxi TRUMY has put into operation diaphragm products covering the following:

  • Highspeed 60,000 RPM— (application on test benches)      

  • Highpower 110,000 KW— (generators drive gas turbine)

  • Highpower 80,000 KW— (steam turbine drive compressors)

  • High torque 10,500 kN.m— (electrical drive engineering equipment)