A steam distribution mechanism for a direct-acting lifting plate regulating valve
A technology of steam distribution mechanism and regulating valve, which is applied in the direction of engine components, engine control, machine/engine, etc. It can solve problems such as misalignment of sealing sleeves, steam or oil leakage, and poor sealing, so as to ensure safety and economy. The effect of low cost and simple mechanism structure
Active Publication Date: 2017-04-05
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
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[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 steam distribution mechanism for a direct-acting lifting plate type regulating valve, which is characterized in that it includes an oil motor, a lifting rod, a beam, and a lifting plate; The lower part is connected to the lifting plate; the oil motor is installed on the bracket above the crossbeam, and its piston rod is connected to the middle part of the crossbeam; the sliding pin system of the key is set on both sides of the crossbeam, and the sliding pin system includes the matching sliding key and A keyway, the feather key is fixed on the beam, and the keyway is fixed on the valve bracket. The invention can effectively overcome the problem of lateral abrasion of the seal sleeve by the original lifting rod and ensure the safety and economy of the unit. It is widely used in the field of lifting plate regulating valve.
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 connectin...
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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