As a key component for controlling and regulating the operating status of the turbine, the EH oil system of the steam turbine requires highly reliable and stable hydraulic components to ensure the smooth operation of the entire system. The NXQA-25/31.5-L-EH accumulator, as an important component in the EH oil system, plays a crucial role in its internal bladder.

The bladder of the accumulator is a diaphragm connecting the gas and liquid phases. Its function is to absorb and release energy fluctuations in the hydraulic oil system to maintain the pressure stability of the system. In the EH oil system of the steam turbine, the accumulator bladder must have extremely high chemical resistance, aging resistance and mechanical strength to meet the special requirements of the anti-fuel system.

Among the many types of rubber materials, butyl rubber has become an ideal material for making accumulator bladders with its excellent air tightness, heat resistance and chemical stability. Butyl rubber has good resistance to a variety of chemicals, especially for phosphate oils commonly used in anti-fuel systems, it can provide excellent compatibility and long-term durability.

The NXQA-25/31.5-L-EH bladder is made of high-performance butyl rubber and is designed for use in the EH oil system of steam turbines. It has a capacity of 25 liters and a maximum working pressure of up to 31.5 MPa. This bladder is designed to enable quick maintenance and replacement without complete removal from the hydraulic system, significantly improving maintenance efficiency and reducing downtime. In addition, its top-accessible design ensures that the working fluid will not fly when the bladder is replaced, which is beneficial to environmental protection.

In actual applications, the NXQA-25/31.5-L-EH bladder can effectively absorb instantaneous pressure fluctuations caused by load changes, thereby protecting the EH oil system from overpressure damage and ensuring the smoothness and reliability of turbine operation. In order to ensure the long-term and effective operation of the bladder, regular inspections and necessary maintenance are essential. This includes monitoring the aging of the bladder, checking for signs of leakage, and replacing it when necessary.

The application of accumulator bladder NXQA-25/31.5-L-EH made of high-performance butyl rubber in the anti-fire oil system of steam turbines not only reflects the perfect combination of material science and engineering technology, but also reflects the unremitting pursuit of modern industry for efficient and safe operation of equipment. By selecting the appropriate accumulator bladder, the stability and reliability of the EH oil system can be significantly improved, thereby ensuring the safe and efficient operation of the steam turbine and even the entire power plant.

Yoyik offers various types of valves and pumps and its spare parts for power plants:
sealing oil Emergency pump HSNH-280-43NZ
24v solenoid CCS230D
control valve units 4WE10D33/CW230N9K4/V
Sequence valve F3RG03D330
piston pump price 70LY-34×2-1B
straight stop valve K25FJ-1.6PA2
valve PP3-N03BG
PRO-DV insert seal DN100 mm ( silicone ) P17458C-01
oil pump ACF090N5ITBP
Bellows valves WJ32F-16PDN32
MECHANICAL SEAL N.D.E L270
sealing oil float valve FY-40
overflow shut off valve WJ15F3.2P
hydropneumatic accumulator NXQ-AB-10/31.5-L-E
Hydraulic Servo Valve DEC21NF58N
Accumulator bladder NXQA-10/20-L-EH
BLADDER NX A10/31.5 L
BEARING 2JJQ52
Pump casing wear ring PCS1002002380010-01/502.03
Globe valve WJ25F-16