Turbo machine having a sealing unit, maintenance method, and associated maintenance device
AssigneeGrundfos Holding A/S
InventorAllan Jessen
Life of this patent
Estimating the term…
Abstract
An axial pump operated in a standing manner has an inner housing part (2), in which a shaft (10) carrying a propeller wheel (4) is mounted. An outer housing part (1) is provided, wherein a flow path (3) for the fluid delivered by the propeller wheel (4) is formed between the inner and outer housing part. The inner housing part (2) is designed for receiving a fluid buffer for at least one seal (15) and includes an opening (19, 20) for the supply and drainage of the buffer. A recess (24, 25) is provided in the outer housing part (1), via which recess the opening (19, 20) is accessible from the outside. A valve (23) is provided in or on the inner housing part (2), with which valve the conduit leading through the opening (19) can be blocked.
Claims16
A flow machine axial pump operated in a standing manner, the flow machine comprising:
- an inner housing part;
- a propeller wheel;
- a shaft carrying the propeller wheel, the shaft being mounted in the inner housing;
- an outer housing part, wherein a flow path for the fluid delivered by the propeller wheel is formed between the inner and outer housing part, the outer housing part surrounding the inner housing part, and the inner housing part is configured to receive a fluid buffer for at least one seal and comprises at least one opening for the supply and drainage of the fluid buffer, wherein a recess is provided in the outer housing part, via which recess the least one opening is accessible from outside of the outer housing;
- and
- a valve in or on the inner housing part, with which valve a conduit leading through the least one opening can be blocked.
A method for controlling the fluid level of the fluid buffer of a seal of a flow machine axial pump operated in a standing manner, the method comprising the steps of
- providing the flow machine so as to comprise an inner housing part, a propeller wheel, a shaft carrying the propeller wheel, the shaft being mounted in the inner housing, an outer housing part, wherein a flow path for the fluid delivered by the propeller wheel is formed between the inner and outer housing part, and the inner housing part is configured to receive a fluid buffer for at least one seal and comprises at least one opening for the supply and drainage of the fluid buffer, wherein a recess is provided in the outer housing part, via which recess the opening is accessible from outside of the outer housing, and a pump-side valve in or on the inner housing part, with which pump-side valve a conduit leading through the opening can be blocked;
- after removal of one or more closure bodies, a pipe section of a fluid level control device is led from the outside through the recess in the outer housing part and is fixed in the opening which is aligned thereto and which is in the inner housing part;
- the pump-side valve in or on the opening and one or more fluid level valves of the fluid level control device are activated in an opening manner;
- the fluid level within the inner housing part is determined by way of the device;
- the pump-side and fluid level valves are activated in a closing manner and the fluid level control device is removed;
- and
- the previously removed closure bodies are inserted again.
A method for draining the fluid buffer of a seal of a flow machine, in particular of an axial pump operated in a standing manner, the method comprising the steps of:
- providing the flow machine so as to comprise an inner housing part, a propeller wheel, a shaft carrying the propeller wheel, the shaft being mounted in the inner housing, an outer housing part, wherein a flow path for the fluid delivered by the propeller wheel is formed between the inner and outer housing part, and the inner housing part is configured to receive a fluid buffer for at least one seal and comprises at least one opening for the supply and drainage of the fluid buffer, wherein a recess is provided in the outer housing part, via which recess the least one opening is accessible from outside of the outer housing, and a pump-side valve in or on the inner housing part, with which pump-side valve a conduit leading through the least one opening can be blocked;
- after removal of one or more closure bodies, a pipe section is led from the outside through the recess in the outer housing part and is fixed in the least one opening which is aligned thereto and which is in the inner housing part, wherein the pump-side valve is activated in an opening manner and the fluid is removed through the pipe section out of the pump housing.
A method for filling the fluid buffer of a seal of an axial pump operated in a standing manner, the method comprising the steps of:
- providing the flow machine so as to comprise an inner housing part, a propeller wheel, a shaft carrying the propeller wheel, the shaft being mounted in the inner housing, an outer housing part, wherein a flow path for the fluid delivered by the propeller wheel is formed between the inner and outer housing part, and the inner housing part is configured to receive a fluid buffer for at least one seal and comprises at least one opening for the supply and drainage of the fluid buffer, wherein a recess is provided in the outer housing part, via which recess the least one opening is accessible from outside of the outer housing, and a pump-side valve in or on the inner housing part, with which pump-side valve a conduit leading through the least one opening can be blocked;
- a closure body is removed from the recess in the outer housing part, whereupon a closure body is removed from the at least one opening of the inner housing part, and a pipe section is led from the outside through the recess in the outer housing part and is fixed in the opening which is aligned thereto and which is in the inner housing part, whereupon the filling with fluid is effected through the pipe section and that after the filling with fluid, the pipe section is removed and the closure bodies are attached.
Dependencies are inferred from the claim text.