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hydraulic adjustment device

A technology for adjusting devices and compressing devices, which is applied in accumulator devices, fluid pressure actuating devices, wind turbine control, etc., can solve problems such as adverse effects of accident safety, high device technical costs, etc., and achieve simple device technology Effect

Inactive Publication Date: 2017-10-27
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the solution shown has the disadvantage that the same working chamber is used not only for the working function of the adjusting device, but also for special functions such as emergency driving operation
The pressure medium circuit for operational operation is therefore not separated from the pressure medium circuit for special operation, which could have a negative effect on accident safety in special operating situations
The disadvantage of the solution shown is also that two separate cylinders are provided for the two functions, which is a high technical outlay for the installation

Method used

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Examples

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Embodiment Construction

[0034] figure 1 A first exemplary embodiment of a hydraulic adjusting device 1 is shown, as in a wind energy installation for adjusting the angle of attack or pitch of a rotor blade (not shown). The adjusting device 1 has an adjusting cylinder, a hydraulic press 4 and a pressure medium tank 6 . It also has a compressor 8 , a 3 / 2-way valve 10 formed as a control valve and a 2 / 2-way valve 12 formed as a valve seat by the control valve.

[0035] The adjustment cylinder 2 has a piston 14 on which the figure 1 A first piston face 16 is provided on the left and a second piston face 18 is provided on the right. The piston face 18 serves to move the piston 14 in the adjustment direction, and the piston face 16 serves to move it in the reset direction. A first working chamber 22 of the adjusting cylinder 2 is bounded by the housing 20 and the first piston surface 16 of the adjusting cylinder 2 , and a second working chamber 24 of the adjusting cylinder 2 is bounded by the housing 20...

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Abstract

A hydraulic adjusting device, in particular for use in a power plant and / or a wind power plant, includes a double-acting adjusting cylinder that has an adjusting function for a working operation and for a special operation. The double-acting adjusting cylinder is configured to be pressurized with a working pressure medium. In order to satisfy the adjusting function in the special operation, the double-acting adjusting cylinder is further configured to be connected to a pressure medium reservoir that has a pressurized gas isolated from the working pressure medium. The adjusting cylinder has a working chamber configured for the adjusting function of the special operation, the piston area of which is coupled to a piston arrangement of the adjusting cylinder that is configured for the working operation or is configured to be coupled to the piston arrangement.

Description

technical field [0001] The invention relates to a hydraulic adjusting device. Background technique [0002] Such an adjusting device has an adjusting cylinder with a piston or a piston arrangement with two oppositely acting piston surfaces, wherein a first working chamber is delimited by a first piston surface and a second working chamber is delimited by a second piston surface. An adjusting cylinder thus configured as double-acting has an adjusting direction and a restoring direction. During working operation, the two working chambers are acted upon by a particularly incompressible or fluid working medium. Such a control device is used, for example, to adjust rotor blades of a wind energy installation or to adjust valves in a cooling circuit of another energy installation. [0003] In order to ensure the adjustment of, for example, the rotor blades during special operations, such as emergency operation or emergency driving operation, the adjustment device additionally has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/072F15B20/00F03D7/02F15B15/14
CPCF03D7/02F15B11/072F15B15/14F15B15/1409F15B15/1466F15B15/1476F15B20/002F15B2211/212F15B2211/7054F15B2211/7055F15B2211/8623F15B2211/8752Y02E10/72F15B1/022F15B11/0725F15B15/1423F15B15/20F15B20/004
Inventor U.弗勒利希S.克鲁格I.德托卢克
Owner ROBERT BOSCH GMBH
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