Direct-acting lifting plate type adjusting valve steam-distribution mechanism
A technology of steam distribution mechanism and regulating valve, which is applied in engine components, engine control, machine/engine, etc., can solve the problems of steam or oil leakage, non-concentric sealing sleeve, loose sealing, etc., and achieves low cost and simple mechanism structure. , to ensure the effect of safety and economy
Active Publication Date: 2015-01-07
DONGFANG TURBINE CO LTD
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Problems solved by technology
The most important problem is that because the lever rotates around the fulcrum as the center of the circle, the oil motor connecting rods on both sides of the lever and the lifting rod of the valve will move along the axis of the steam turbine to a certain extent, causing the oil motor connecting rod and the valve lifting rod to be in line with the corresponding In this case, the action of the valve will cause lateral wear between the connecting rod of the oil motor, the valve lifting rod and the corresponding sealing sleeve. Over time, the seal will not be tight enough to cause steam or oil leakage, affecting the safety and economy of the unit
Method used
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Embodiment Construction
[0021] like Figure 1 to Figure 4 Shown: a steam distribution mechanism for a direct-acting lifting plate type regulating valve, including an oil motor 9, a lifting rod 5, a beam 3, and a lifting plate 6; Its bottom all connects lifting plate 6; Described oil motor 9 is installed on the support 13 above crossbeam 3, and its piston rod 10 is connected with crossbeam 3 middle parts, after being adjusted in place, piston rod nut 2 is tightened. The sliding pin system of the key is set on both sides of the crossbeam 3, the sliding pin system includes a matching sliding key 11 and a keyway 1, the sliding key 11 is installed in the groove of the crossbeam 3, and is fixed with a sliding key fixing screw 14; The keyway 1 is installed on the inner side of the valve bracket 13, fixed by the keyway fixing screw 15 and the pin 18, which ensures the synchronous vertical up and down movement of the two lifting rods 5. The sliding key 11 is assembled with the groove on the beam by interfere...
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The invention discloses a direct-acting lifting plate type adjusting valve steam-distribution mechanism. The direct-acting lifting plate type adjusting valve steam-distribution mechanism is characterized by comprising a hydraulic servo-motor, two lifting rods, a cross beam and a lifting plate, wherein the upper portions of the two lifting rods are respectively connected to two ends of the cross beam; the lower portions of the two lifting rods are connected with the lifting plate; the hydraulic servo-motor is arranged on a support above a valve shell; and a piston rod of the hydraulic servo-motor is connected to the middle of the cross beam. By the direct-acting lifting plate type adjusting valve steam-distribution mechanism, the problem that the lateral of a sealing sleeve is worn by the original lifting rod can be effectively solved, and the safety and the economy of a unit are guaranteed. The direct-acting lifting plate type adjusting valve steam-distribution mechanism can be widely used in the field of lifting plate type adjusting valves.
Description
technical field [0001] The invention relates to a regulating valve for a steam turbine, in particular to a steam distribution mechanism for a direct-acting lifting plate regulating valve. Background technique [0002] Due to the simple structure, low cost and flexible operation of the lifting plate control valve, it is widely used in small and medium-sized industrial steam turbines. The current lifting plate control valve mainly uses a steam distribution mechanism with a lever structure, and the oil motor is on the side of the lever. The plate regulating valve is on the other side of the lever. However, with the widespread use of this structure, certain problems have also appeared. The most important problem is that because the lever rotates around the fulcrum as the center of the circle, the oil motor connecting rods on both sides of the lever and the lifting rod of the valve will move along the axis of the steam turbine to a certain extent, causing the oil motor connect...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16K31/122
CPCF01D17/26F05D2270/64
Inventor 尹刚刘佳男张健樊小平吴方松尹华劼王义飞张立志王功王颖孙浩云赵锦石晶
Owner DONGFANG TURBINE CO LTD