A kind of valve is with detachable valve seat linkage structure
The utility model relates to a kind of valving, particularly be a kind of valve with detachable valve seat linkage structure.
Valve is widely used in the Power Plant system, all plays an important role in each system of power plant.Because the operating mode of valve operation is quite complicated, often faces particularly thorny problems such as high temperature, High Pressure Difference, cavitation, flash distillation, can not despise to the valve destructiveness, situations such as operation that can directly cause valve to take place to leak waiting influencing unit safety and energy consumption raising.When valve opening, tend to produce phenomenons such as cavitation, there is the impurity of some in the power plant system pipeline in addition, can cause fatal destruction to valve.And the valve seat of valve is the most impaired component of whole valve.Now normally used all kinds of valves, especially modulating valve, valve seat are often welded extremely on valve body, can't take out in valve body.If in case valve seat is blown damage, whole valve body all will be changed during maintenance, and valve body often again with system pipeline welding, so maintenance is very complicated, expend a large amount of time, also strengthened the cost of maintenance.Therefore, design a kind of dismountable valve seat construction and will make the maintenance of valve more convenient, increased Economy.
The model utility content
The purpose of this utility model is to improve the deficiency of valve seat on linkage structure of valve, and provides a kind of valve with detachable valve seat linkage structure, solves the problems referred to above.
To achieve these goals, the utility model is to realize by the following technical solutions:
A kind of valve is with detachable valve seat linkage structure, described valve comprises valve seat, valve body and valve gap, described valve gap links to each other with valve body by fixing bolt, described valve seat is by be fixedly clamped bottom position place in valve body of the valve gap that presses down, at the connection part place of described valve body and valve gap and valve seat, also be respectively arranged with a circle stainless steel deformable compression seal pad.
The beneficial effects of the utility model are, in a single day be damaged so that after valve leaks, can in valve body, take out smoothly and change, the maintenance expenses when saving the valve body replacing when valve seat at once, simultaneously improve maintenance efficiency greatly, had suitable economic benefit.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is a structural representation of the present utility model.
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
The utility model is the linkage structure of a kind of valve with detachable valve seat, and it mainly is formed by connecting by valve gap 1, valve body 2 and valve seat 3, and wherein, valve gap 1 links to each other with valve body 2 by fixing bolt 52.As shown in Figure 1, difference between the utility model and the existing valve is, valve seat 3 is subjected to the downward thrust F that produced when tightening fixing bolt 52 by nut 51 on the valve gap 1, bottom position in valve body 2 is fixedly clamped, rather than the welding manner that generally uses when adopting valve to manufacture is fixed, and the connection part place 3 of valve body 2 and valve gap 1 and valve seats all is provided with stainless steel deformable compression seal pad 4, carries out the sealing for valve connection part place.For this reason when the valve sets load connects, only need assemble valve body 2 earlier, then valve seat 3 and other interior fittings of valve body are assembled into successively in valve body 2, last only the need is fixedly connected on several bolts 52 of valve gap 1 usefulness on the valve body 2, just can finish the assembling of valve.Owing to also be subjected to the downward thrust F that produces when fixing bolt on the valve gap 1 is tightened, make the stainless steel deformable compression seal pad 4 of 1 of valve body 2 and valve seat 3 and valve gap produce the situation of pressurized resiliently deformables like this, so joint gap between valve seat 3, valve gap 1 and the valve body 2, the stainless steel deformable compression seal pad 4 that just can be deformed fills up sealing, and the problem that valve body 2 leaks can not take place, just guaranteed the leakproofness of valve seal.
And when in a single day valve leaks owing to the prooving of valve seat, only need the nut 51 on the bolt 52 on the valve gap 1 to unscrew, the resiliently deformable of stainless steel deformable compression seal pad 4 just begins to recover, institute is so that can change valve seat 3 easily from valve body 2 interior taking-ups, reach valve seat 3 dismountable effects, realized that so just valve is under the prerequisite that has good usability and sealing, the a large amount of maintenance expensess that cause the integral replacing of valve body 2 owing to the damage of valve seat 3 can be saved to a great extent, also maintenance efficiency can be improved greatly simultaneously.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.