Description :

  The rubber airbag of the mud pump pulsation damper is the core elastic component in the air bag assembly of the oil drilling mud pump, mainly solving the pressure pulsation problem caused by the reciprocating motion of the piston during mud transportation. By balancing internal inflation and external mud pressure, the rubber airbag can effectively absorb impact energy, stabilize pipeline pressure, and protect pump valves and pipeline systems from high-frequency vibration damage. Typical operating conditions include high-pressure drilling, cementing operations, and mud circulation systems.

  This rubber airbag is usually made of high-performance nitrile rubber (NBR) or hydrogenated nitrile rubber (HNBR), which has excellent oil resistance, wear resistance, and tear strength. The common working pressure range covers 16MPa to 35MPa, and the suitable temperature range is generally -20 ℃ to 120 ℃. The product complies with API 7K or SY/T related petroleum equipment accessory standards, undergoes strict air tightness testing and fatigue life testing to ensure structural integrity in harsh downhole environments, and the size specifications need to be precisely matched with the specific model of mud pump air case shell.

  When selecting, it is important to confirm the model of the mud pump (such as F series, 3NB series, etc.) and the specific volume and interface size of the air bag. The flange connection method and airbag contour of different brands of equipment may differ and cannot be used interchangeably. If the working conditions contain high concentrations of abrasive particles or extreme high temperatures, it is recommended to use reinforced thickened wall design or special fluororubber materials. Attention should be paid to distinguishing the position and fixing method of the air inlet to avoid early failure caused by installation misalignment, which is not applicable to non reciprocating plunger pump systems.

  Before installation, the surface of the airbag should be checked for scratches, bubbles, or aging cracks to ensure that the inner wall of the airbag is smooth and free of burrs. An appropriate amount of silicone grease should be applied to assist in installation to avoid twisting or pinching. During daily maintenance, it is necessary to regularly monitor the pre filled nitrogen pressure and maintain it between 30% -40% of the specified working pressure. If the pressure is too low, the damping effect will be lost, and if it is too high, the buffering capacity will be reduced. When abnormal gas content is found in the mud or the pointer of the pump outlet pressure gauge swings too much, the machine should be stopped to check whether the airbag is damaged or leaking, and replaced in a timely manner to ensure drilling efficiency.

Product Usage 💡

1. Oilfield drilling equipment: Installed inside the air bag at the discharge end of the mud pump, relying on pre filled gas in the airbag to buffer the pulse pressure of the drilling fluid. 2. Pressure stabilization and shock absorption: eliminate the fluctuation of pipeline water pressure caused by the reciprocating motion of the three cylinder pump, reduce pipeline vibration, avoid pipeline rupture, and protect pipeline accessories such as pressure gauges and valves. 3. Extend equipment life: Reduce fatigue losses of pump bodies and high-pressure pipelines, which are the core vulnerable spare parts of petroleum drilling mud systems.

Material and Performance

Main material: Oil resistant, acid alkali resistant special nitrile rubber NBR, resistant to drilling mud corrosion and high pressure, suitable for harsh working conditions in oil fields.

Pressure bearing characteristics: able to withstand high-pressure pulsation impact of mud pump, commonly used with pre filled nitrogen gas.

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