Device for the hydropneumatic control of a valve with a pneumatic locking means
A valve control, device technology, applied in the direction of valve operation/release devices, valve devices, engine components, etc., can solve problems such as unsatisfactory locking, complexity, and deterioration of locking devices
Active Publication Date: 2013-07-31
罗达莱克斯
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Problems solved by technology
[0006] While this device has interesting functionality, it also has several disadvantages
In fact, the manufacture of such devices is rather complicated due to the large number of parts, some of which require complex and expensive machining, for example, the rollers, the bearings of the rollers and the pushers
Assembling such a device is also quite complicated, as many parts require precise adjustment
Furthermore, actuating the locking means requires a tightening operation which, as taught by the preceding documents, can lead to a deterioration of the locking means and / or possibly an unsatisfactory locking
Method used
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[0029] The descriptions below refer to geographical terms such as "upper", "top", "lower" and "bottom". These terms are used by way of example only with respect to the orientation of the device in the drawings and for the purpose of clarity. These terms should not be interpreted as absolute and limiting, but should be understood only with respect to the orientation and application of the device according to the drawings.
[0030] A valve control device according to the invention is shown in figure 1 , 2 and 3 in. figure 2 The details that best illustrate the structure of the device, figure 1 and 3 Some specific technical aspects are best shown. The description of the structure of the device should therefore first be based on the figure 2 , then with respect to the corresponding technical aspects based on figure 1 and 3 .
[0031] Such as figure 2 The valve control device 1 shown comprises a body mainly composed of two elements, namely a main element 2 and an eleme...
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The invention relates to a valve control device, the device including a hydropneumatic mechanism for amplifying the force resulting from the presence of a pressurised fluid in a control chamber consisting of a piston (4) housed in the body (2, 3) of the device. The piston (4) is rigidly connected to a piston (5) with a smaller cross-section and tightly engaging with a control member (6). The downward movement of the piston with the smaller cross-section (5) engages with a hydraulic chamber so as to increase the pressure inside said chamber and to move the control member (6) in the opposite direction. A connection port (19) for supplying the pressurised fluid is provided on a rotatably mobile element (13) on top of the device. Said port (19) is off-centre relative to the longitudinal axis, so as to be aligned with an opening (17) for supplying the control chamber. A seal is provided between the two surfaces comprising the port (19) and the opening (17) so as to seal the fluid stream when both elements are aligned. The mobile element (13) is rotatably attached to the ring (12) for activating the mechanical locking means (10) of the control member (6). In this way, a single operation of the ring (12) makes it possible to deactivate the mechanical locking means and to supply the control chamber with pressurised fluid.
Description
technical field [0001] The present invention relates to valve control devices, in particular to pressurized fluid control devices, and still more particularly to pressurized fluid control devices including control force multiplication and / or mechanical locking devices. Background technique [0002] Various devices for pneumatic valve control are known in the prior art. [0003] Document US 4,763,690 discloses such a device coupled to a valve for a pressurized gas cylinder. The control device includes a body adapted to be attached to the body of the valve. The body of the device includes at its center a lever movable along its longitudinal axis. The lower portion of the rod is adapted to be mechanically connected by being coupled to the movable part of the valve. The upper portion of the rod is mechanically connected to a piston capable of translational movement along the longitudinal axis. The upper portion of the body includes an attachment portion forming a cavity in w...
Claims
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IPC IPC(8): F16K31/122
CPCF16K31/122F16K1/00
Inventor P.穆佐
Owner 罗达莱克斯