Valve chest and valve equipped with valve chestTechnical field
The utility model relates to valve chest (Ventilgehaeuse), valve chest has seat ring mounting portion, seat ring installationThe radial flange for the seat ring that portion, which includes annular convex shoulder, to be used to be forced on annular convex shoulder as bearing seal face and for being screwed intoThe shell side threaded portion of holding mechanism, the holding mechanism keep the raceway contacts radial flange, and the utility model further relates to be equipped withThere is the valve of valve chest.
Background technique
The valve chest of aforementioned type is disclosed by WO2010/002870A1.Two can be used in the known valve notSame seat ring, i.e. a threaded seat ring or a clamping seat ring.The valve includes valve chest, which has for installingThe space of two different types of cages, the cage adapt to seat ring respectively.Valve mounting portion includes annular convex shoulder, radial flange and appearanceReceive the threaded portion of screw thread seat ring.Alternatively, the mounting flange of clamping seat ring is mountable on annular convex shoulder, sealing is consequently formed.?Feel on the valve disadvantageously, when clamping seat ring is rotated when itself is not screwed, the fluid for flowing through valve can be certainlyBy ground act on the threaded portion and there to become it is serious abrasion or corrosion be responsible for.
Utility model content
The task of the utility model is to provide a kind of unified valve chest and a kind of valve with this unified valve chest,Wherein, which avoids wearing or corroding when unutilized as far as possible.
Valve chest has seat ring mounting portion, and the seat ring mounting portion includes annular convex shoulder and the shell for being screwed into holding mechanismSide threaded portion, bearing seal of the annular convex shoulder as the radial flange of the seat ring for being forced on the annular convex shoulderFace, the holding mechanism keep the seat ring with contacting the radial flange, and valve chest is being flowed through in shell side threaded portionThe downstream of the radial ringed convex shoulder is set on the flow direction of fluid.
For this purpose, valve chest is being flowed through in the shell side threaded portion in the utility model valve chest for especially flowing opening valveFluid flow direction on be set to radial ringed convex shoulder downstream.On this position, shell side threaded portion is not only at it with screw threadIt is protected when portion is screwed around on valve seat member, also when not using shell side threaded portion, so that fluid only slightly touchesShell side threaded portion, it is possible thereby to keep the abrasion or corrosion of slight shell side threaded portion.
According to one embodiment, on the valve chest of the utility model, guiding is equipped in the upstream of shell side threaded portionFace, outer surface of the guide surface as guiding mechanism designed for axial annular flange or flange on the holding mechanism, thusThe holding mechanism or respectively its moving valve chipware are directed into it using position and keep aligning direction there.
In order to complete the task, having the characteristics that the valve of the utility model of above-mentioned valve chest is, which includesClamping ring, clamping ring include clamping ring side threaded portion on its outer peripheral surface, and clamping ring side threaded portion is designed for and shell side spiral shellLine portion is threadedly coupled and seat ring is fixed between the annular convex shoulder and clamping ring in installment state.In this embodimentIn, the clamping ring side threaded portion of the clamping ring advantageously cooperates with shell side threaded portion, fixes the seat ring will pass through clamping ringAnd avoid threaded portion by fluid washing-round and associated abrasion or corrosion as far as possible.
According to another embodiment, which may include valve cage, and valve cage has valve cage side spiral shell in its outer peripheral surfaceLine portion, valve cage side threaded portion with shell side threaded portion designed for connecting and seat ring being fixed on institute in installment stateIt states between annular convex shoulder and valve cage.In this embodiment, the valve cage side threaded portion of the valve cage is advantageously matched with shell side threaded portionIt closes, fixes the seat ring will pass through valve cage and avoid threaded portion by fluid washing-round as far as possible.
In order to complete the task, the valve with the valve chest of the above-mentioned type according to the present utility model is to keepMechanism includes valve cage, and valve cage is clamped between valve deck and seat ring and oppresses seat ring with contacting radial flange simultaneously against the annularConvex shoulder.Shell side threaded portion is not needed in this embodiment yet, because seat ring is held in place under valve cage clamping action.
In a preferred embodiment of the bright valve of we, the seat ring and valve cage are constituted in integral type, this is with most advancedMode is conducive to stablize valve seat construction.
In another preferred embodiment of the valve of the utility model, on the valve cage under the threaded portion of clamping ring sideTrip be molded with radial seal lug boss, the seal convexity portion acted in valve cage loading state the adjacent surface of the valve chest and byThis provides additional seal effect.
Detailed description of the invention
The further advantage, feature and application of the utility model are obtained from the explanation below in conjunction with embodiment shown in the drawingsPossibility.
The term used in following reference signs lists and correspondence are used in specification, claims and attached drawingAppended drawing reference, attached drawing shows:
Fig. 1 shows the sectional view of the first embodiment of valve according to the present utility model,
Fig. 2 shows the enlarged section according to the mounting portion of the valve of Fig. 1,
Fig. 3 shows the sectional view of the second embodiment of valve according to the present utility model,
Fig. 4 shows the enlarged section of the mounting portion of the valve according to Fig. 3,
Fig. 5 shows the sectional view of the 3rd embodiment of valve according to the present utility model, and
Fig. 6 shows the enlarged section of the mounting portion of the valve according to Fig. 5.
Reference signs list
2 valves；
4 valve chests；
6 valve decks；
8 bearings；
10 valve rods；
12 valve cones；
14 seat rings；
16 seat ring mounting portions；
18 annular convex shoulders；
20 flanges；
21 sealings；
22 clamping rings；
The outer surface of 23 flanges；
24 shell sides threaded portion；
25 holes；
26 clamping ring sides threaded portion；
27 holes；
28 guide surfaces；
30 annular flanges；
32 outer guide surfaces；
34 inside guide surfaces；
42 valves；
44 valve chests；
46 valve decks；
48 bearings；
50 valve rods；
52 core members；
54 valve cages；
56 seat rings；
58 seat ring mounting portions；
60 annular convex shoulders；
62 radial flanges；
64 valve cage sides threaded portion；
65 holes；
66 shell sides threaded portion；
67 holes；
68 guide surfaces；
70 annular flanges；
The outer surface of 71 flanges；
72 outer guide surfaces；
74 inside guide surfaces；
82 valves；
84 valve chests；
86 valve decks；
88 bearings；
90 valve rods；
92 core members；
94 valve cages；
96 seat rings；
98 seat ring mounting portions；
100 annular convex shoulders；
102 radial flanges；
104 sealing rings；
106 shell sides threaded portion；
108 guide surfaces；
109 guide surfaces；
110 annular flanges；
111 flange exterior surfaces；
112 seal convexity portions；
114 faces；
116 outer guide surfaces；
118 inside guide surfaces.
Specific embodiment
Fig. 1 shows the sectional view of the first embodiment of valve 2 according to the present utility model, and valve includes valve chest 4 and closingThe bearing 8 of the valve deck 6 of valve chest 4 and the valve rod 10 for boring 12 with spool.Spool cone 12 cooperates with seat ring 14, seat ring peaceIn the seat ring mounting portion 16 of valve chest 4.There is the seat ring mounting portion 16 of valve chest 4 annular convex shoulder 18 to be used as bearing seal faceThe radial flange 20 of seat ring 14 for being forced on annular convex shoulder 18.
In Fig. 1, contact 20 ground of radial flange keep seat ring 14 holding mechanism include clamping ring 22, have for willClamping ring 22 is screwed into the clamping ring side threaded portion 26 in shell side threaded portion 24, as shown in Figure 2.It is equipped on clamping ring 22 multipleHole 25,27, tool can act on the hole so that clamping ring side threaded portion 26 to be screwed into shell side threaded portion 24.Clamping ring 22Then contact 20 ground of radial flange keeps seat ring 14 against annular convex shoulder 18 and seat ring 14 is fixed on annular in installment stateBetween convex shoulder 18 and clamping ring 22.As shown in Fig. 2, plain seal ring 21 is arranged between annular convex shoulder 18 and clamping ring 22.ShellThe downstream of radial ringed convex shoulder 18 is arranged in side threaded portion 24 on the fluid flow direction for flowing through valve chest 4.
Fig. 2 shows the enlarged sections according to the mounting portion 16 of the valve 2 of Fig. 1.Therefore, on valve chest 4, in shell sideThe upstream of threaded portion 24 is equipped with guide surface 28, and guide surface is as guiding mechanism designed for the axial annular flange on clamping ring 2230 with the clamping ring 22 in fixed.Seat ring 14 is also guided on the inside guide surface 34 of clamping ring 22 by outer guide surface 32.
Fig. 3 shows the sectional view of the second embodiment of valve 42 according to the present utility model, and valve includes valve chest 44 and envelopeThe bearing 48 of the valve deck 46 of valve closing shell 44 and the valve rod 50 for having core member 52, core member are guided on valve cage 54It is mobile.Valve cage 54 and seat ring 56 cooperate, and seat ring is mounted in seat ring mounting portion 58.The seat ring mounting portion 58 of valve chest 44 has ringThe radial flange 62 for the seat ring 56 that shape convex shoulder 60 is used to be forced on annular convex shoulder 60 as bearing seal face.
In Fig. 3, contact 62 ground of radial flange keeps the holding mechanism of seat ring 56 to be made of valve cage 54, and valve cage has valve cageSide threaded portion 64 is for valve cage 54 to be screwed into shell side threaded portion 66 (see Fig. 2).Multiple holes 65,67 are equipped on valve cage 54,Tool can act on the hole, so that valve cage side threaded portion 64 to be screwed into shell side threaded portion 66 (see Fig. 2).Valve cage 54 inIt is that seat ring 56 is fixed on convex annular against annular convex shoulder 60 and in installment state by contact 62 ground of radial flange compressing seat ring 56Between shoulder 60 and valve cage 54.Plain seal ring 61 (see Fig. 2) is arranged between annular convex shoulder 60 and valve cage 54.Shell side threaded portion 66The downstream of radial ringed convex shoulder 60 is set on the flow direction of fluid for flowing through valve chest 44 again.
Fig. 4 shows the enlarged section of the mounting portion 58 of the valve 42 according to Fig. 3.Therefore, in shell on valve chest 44The upstream of side threaded portion 66 is equipped with guide surface 68, and guide surface is as guiding mechanism designed for the axial annular flange on valve cage 5470.Seat ring 56 is also guided on the inside guide surface 74 of valve cage 54 by outer guide surface 72.
Fig. 5 shows the sectional view of the 3rd embodiment of the valve 82 of the utility model, and valve includes valve chest 84 and closing valveThe bearing 88 of the valve deck 86 of shell 84 and the valve rod 90 for having core member 92, core member are guided in valve cage 94.
Valve cage 94 and seat ring 96 cooperate, which is mounted in seat ring mounting portion 98.The seat ring mounting portion 98 of valve chest 84Radial flange 102 with the seat ring 96 that annular convex shoulder 100 is used to be forced on annular convex shoulder 100 as bearing seal face.It is flatSealing ring 104 is placed between annular convex shoulder 100 and valve cage 94.
In Fig. 5, contact 102 ground of radial flange keeps the holding mechanism of seat ring 96 to be made of valve cage 94.Valve cage 94 is in valveIt is clamped between lid 86 and seat ring 96, while contacting 102 ground of radial flange compressing seat ring 96.Valve cage 94 contacts radial flange 102Ground oppress seat ring 96 against annular convex shoulder 100 and in installment state by seat ring 96 be fixed on annular convex shoulder 100 and valve cage 94 itBetween.Plain seal ring 104 (see Fig. 5) is arranged between annular convex shoulder 100 and valve cage 94.Flowing through valve again in shell side threaded portion 106The downstream of radial ringed convex shoulder 100 is set on the fluid flow direction of shell 4.
Fig. 6 shows the enlarged section of the mounting portion 98 of the valve 82 according to Fig. 5.Therefore, in shell on valve chest 84The upstream of side threaded portion 106 is equipped with guide surface 108, and guide surface is as guiding mechanism designed for the axial annular on valve cage 94Flange 110.Seat ring 96 is also guided on the inside guide surface 18 of valve cage 94 by outer guide surface 116.In this embodiment,Valve cage 94 does not have threaded portion.
In the embodiment according to Fig. 6, on valve cage 94, radial seal is molded in the downstream of shell side threaded portion 106Lug boss 112, radial seal lug boss act on the adjacent surface 114 of valve chest 84 in 94 loading state of valve cage and therefore form phaseFor the sealing of fluid circulation.
The common ground that valve-type (cone valve, cage type valve etc.) is different for its structure is, in the utility modelShell side threaded portion in the valve of valve chest or the utility model is set to radial ring on the fluid flow direction for flow through valve chestThe downstream of shape convex shoulder, therefore, fluid only slightly touch shell side threaded portion, it is possible thereby to keep slight shell side threaded portionAbrasion or corrosion.
The utility model be not limited to shown in embodiment.Such as in the valve of the utility model, seat ring can be with valve cageIt integrally constitutes, or is integrally constituted with clamping ring.