Self-adjusting packing gland for sootblower

Details Self-adjusting packing gland for sootblower Self-adjusting packing gland for sootblower

1992-07-20

1993-12-07

Favors, Edward G.

Liquid heaters and vaporizers

Cleaning

15317, 277104, 277113, 122392, F22B 3718

Patent

active

052675335

ABSTRACT:
A self-adjusting joint packing for a sootblower of the type having a stationary feed tube gland with an overfitting lance tube which is moved within the combustion device to emit a blowing medium for cleaning purposes. The joint packing gland mechanism causes the axial loading on the joint packing which forms a seal between the lance tube and the feed tube to be automatically adjusted upon each sootblower actuation cycle. The joint packing gland includes an actuator which engages the sootblower frame upon actuation of the sootblower causing relative rotation between the actuator and lance tube. A friction clutch is interposed between the actuator and a threaded gland to transmit rotation only when a packing preload force is below a predetermined level, thus adjusting packing force when needed.

REFERENCES:
patent: 48599 (1865-07-01), Swartz
patent: 4317573 (1982-03-01), Karkkainen
patent: 4351512 (1982-09-01), Siver
patent: 4386783 (1983-06-01), Davis
patent: 4750548 (1988-06-01), Albers et al.
patent: 4890542 (1990-01-01), Miller et al.
patent: 4924817 (1990-05-01), Seelen
patent: 5090087 (1992-02-01), Hipple et al.

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