Hydraulic control system and lubrication ship intorducing unit

 

(57) Abstract:

Usage: in shipbuilding, in particular in hydraulic systems of ship main propulsion gear units, propulsion complexes mainly with controllable pitch propeller. The essence of the invention: hydraulic control and lubrication contains a single fixed to the pump unit 1, the valves of the mechanisms of Assembly and adjustable safety valves contours lubrication and control. Between the contours of high and medium pressure has driven normally open relief valve 18, and simultaneously adjustable safety valve 15 contour medium pressure - operated normally open valve 19. Line control these valves are interlocked with the control lines of the mechanisms in serviceable valves contours to reduce pressure in the last period of inactivity controlled mechanisms. 1 Il.

The invention relates to shipbuilding, in particular to hydraulic systems intorductory units (BPA) for ship propulsion complexes, mainly with propeller controllable pitch propellers (CPP).

Known to DOCTORS, including CPP propeller, propeller shaft, gearbox with integrated gateline mechanisms (including pumps) and one or more couplers for isolation of elements ROTATING with each other and with the main engine. The hydraulic control and lubrication BPA typically includes a high pressure circuit for controlling the hydraulic cylinder CPP, medium pressure circuit for controlling releasing couplers, the contour of grease on the gears, movable joints and bearings BPA, as well as two hinged pump pump high and medium pressure pump low pressure to separate the respective power circuits with appropriate valves, instruments and control lines [1] In the hydraulic system of any type has a backup pump with auxiliary electric drive, turned on only in case of failure of the main pumps.

Hydraulic system with two pumps are difficult to manufacture and operate, have a higher initial cost. Moreover, these hydraulic economical enough so as to support the nominal parameters of the working fluid in the control loops in a period of inactivity accepted mechanisms (lubrication circuit is maintained all the time the ENEMY).

Known hydraulic control system and lubrication ship BPA containing a single pump driven from the latter, the valves of the control mechanisms of the unit circuits of the high and medium pressure neighboring pressure [2]

When all of the managed system with a single pump is less efficient compared to systems with two pumps.

However, in the known hydraulic ROTATION pressure and the flow rate of the working fluid in the control loops are maintained at a nominal level regardless of the operation controlled mechanisms of the machine, the total time which on most types of vessels significantly less time overall work of the ENEMY. This results in the low efficiency of the known hydraulic systems and accelerated wear of the parts of the valve.

The technical problem of the invention is to minimize the parameters of the working fluid in the control loops in the period of inactivity that they serve mechanisms BPA (for example, in idle mode, the vessel stopped when CPP and running the generator).

The technical result of the invention reduces power consumption of the hydraulic system and increase its reliability and durability.

This is achieved by supplying a known hydraulic ROTATION with one pump normally open controlled valve installed in parallel adjustable safety valve medium pressure circuit, and managed the normal of the medium pressure, when the control line mentioned normal open valve interlocked with line control mechanisms in the medium pressure circuit, and the control line mentioned normally open safety valve interlocked with line control mechanisms in the high pressure circuit.

The drawing shows a schematic diagram of the hydraulic system ROTATING with partial disclosure of the kinematic connection of its managed mechanisms.

Hydraulic control system and the lubrication of the ENEMY ship with propeller CPP contains the main pump 1 with a corresponding valve, leading from the shaft 2 PTO gearbox 3, filter 4, the electrically-controlled valves 5 and 6 of the control cylinder 7 mechanism changes the blade pitch CPP 8. These elements combined with a backup pump 9, the pressure and drain the piping form the high pressure circuit, which requires for its operation the maximum parameters of the working fluid.

The driving shaft 10 of the gear 3 is connected to the shaft of the main engine 11 releasing hydraulic clutch 12, to which the control has electrohydrodynamical 13 and the hydropneumatic accumulator 14. They formed in con is s, for example, releasing the coupling of the generator is fixed to the shaft 2 of the PTO, fittings and appliances (not shown). The contour of the lubrication of the bearings and movable joints BPA includes adjustable safety valve 16, the cooler 17 of the working fluid pipelines and fittings. Between the high pressure circuit and contacts lubricant and medium pressure has driven normally open relief valve 18, and simultaneously adjustable safety valve 15 controlled normally open valve 19, which may be performed for example in the form of electrohydrodynamics. Line control valve 19 is interlocked with the control line of electrohydrodynamically 13, and the control line of the safety valve 18 with line control of electrohydrodynamically 5 and 6. Plum fluid is directed into the tank 20, which is the sump of the gearbox 3.

When working hydraulic system BPA pump 1 takes the working fluid from the tank 20 and directs it through the filters 4 and managed open the safety valve 18 and valve 19 in the lubrication circuit, from which, after passing through a cooler 17, it is distributed to the points of lubrication of the ENEMY under pressure supported will protect their CPP 8 is supplied to the control signal to electrohydrodynamical 13 to enable the coupling 12 to the transmission torque of the engine 11 to the shaft of the CPP and simultaneously to close the valve 19, then adjustable safety valve 15 is effective and establishes the contours of high and medium pressure (to him) the parameters of the working fluid rated for medium pressure circuit.

If you need to change the blade pitch CPP 8 as it rotates simultaneously supplied to the control signal to electrohydraulically 5 and 6 (depending on the required speed of the transfer blades) and the closing of the safety valve 18, whereupon its regulatory part sets in the high pressure circuit for maximum hydraulic pressure necessary for operation of the hydraulic cylinder 7 changes the blade pitch, and loop medium pressure required parameters are supported by the valve 15.

At the end of the transfer blade CPP valve 18 is opened again, lowering the hydraulic parameters to the required operating conditions, mechanisms, powered contours of mean pressure and lubrication. For spin-CPP-disjoined clutch 12 and simultaneously opens the valve 19, by setting the hydraulic system minimum pressure and, accordingly, the minimum power consumption of the pump 1.

Similarly the invention can be PR, including a two-speed or multi-motor drive and hydraulic systems for ship propulsion complexes of other types.

HYDRAULIC CONTROL SYSTEM AND LUBRICATION SHIP INTORDUCING UNIT containing a single pump drive gearbox last, the valves of the control mechanisms of the unit circuits of the high and medium pressure and corresponding control lines, and adjustable safety valves lubrication circuit and secondary circuit pressure, characterized in that it has operated normally open valve installed in parallel adjustable safety valve medium pressure circuit, and controlled normally open relief valve installed between the high pressure and contours of lubrication and medium pressure when the control line mentioned normally open valve interlocked with line control mechanisms in the medium pressure circuit, and the control line mentioned normally open safety valve interlocked with line control mechanisms in the high pressure circuit.

 

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