Elbow valve |
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| 申请号 | US3665952D | 申请日 | 1971-02-12 | 公开(公告)号 | US3665952A | 公开(公告)日 | 1972-05-30 |
| 申请人 | CHRONISTER VALVE CO INC; | 发明人 | CHRONISTER CLYDE H; | ||||
| 摘要 | A pipe elbow in a valve housing having first and second conduits extending therein with the elbow pivotally sealable to the first conduit and to a trunnion axially aligned with the first conduit whereby the elbow may be rotated to bring the second end into and out of alignment with the second conduit. Sealing means for closing off the second end of the elbow for equalizing pressure before opening the valve having a first member sealing against the elbow and having an opening therethrough with a second member positioned to extend into the opening and seal therein with a loss motion connection between the first and second members. The elbow being actuated by means connected to the trunnion and the trunnion including a load bearing type universal joint. The second end of the elbow and the second conduit having coacting bevels whereby the ends thereof may be closely spaced together to provide a through conduit valve. The seal means including a double block and bleed seal with a testing conduit. The housing being made of portions of conventional pipe and flat plate to provide an inexpensive yet sturdy valve. | ||||||
| 权利要求 | 1. A valve comprising, a housing having first and second conduits extending therein, a pipe bend in said housing having first and second ends, the first end thereof being pivotally sealable to the first conduit, a trunnion connected to the exterior of the bend and axially aligned with the first conduit whereby the bend may be rotated about the trunnion and first end, actuating means connected to the bend for rotating the bend about the trunnion and the first end for aligning the second end of the pipe bend with the second conduit and for moving the second end out of alignment with the second conduit into a second position, sealing means for closing off the second end when the second end is in the second position, said sealing means including a first member sealing against the second end of the bend, said first member having an opening therethrough, a second member positioned to extend into the opening and seal therein, seal actuating means connected to the second member and extending externally of the housing, and lost motion means between the first and second members. 2. The apparatus of claim 1 wherein the first member includes, an enclosure for telescoping about the second end of the pipe bend, said second end of the pipe bend being straight to allow telescoping of said enclosure, an abutment around the second end of the pipe bend, and seal means on one of the enclosure and the abutment for sealing the second end of the pipe bend with the enclosure is moved against the abutment. 3. The apparatus of claim 2 wherein the seal means includes a resilient seal on one of the enclosure and abutment, and a ridge on the other of the enclosure and abutment for coacting against the resilient seal. 4. The apparatus of claim 2 wherein the seal means include two spaced resilient seals on one of the enclosure and abutment, two spaced ridges on the other of the enclosure and abutment for coacting against the resilient seals, and a passageway between the seals leading exteriorly of the housing. 5. The apparatus of claim 1 wherein, actuating means is connected to the trunnion and extending exteriorly of the housing. 6. The apparatus of claim 5 wherein the trunnion includes a load bearing universal joint. 7. The apparatus of claim 1 wherein, the second end of the pipe bend is tapered outwardly, and the inward end of the second conduit is tapered inwardly, said taper being positioned generally on a sphere having its center at the intersection of the axis of the first and second conduits. 8. The apparatus of claim 1 including, guide means between the housing and the first member for insuring that the first member will align with the second end of the bend. 9. The apparatus of claim 1 including, a third conduit extending into the housing and positioned for alignment with the second end of the pipe bend when the bend is rotated to a third position to provide a three-way valve, and further sealing means for sealing the second end of the pipe bend with each of the second and third conduits. 10. The apparatus of claim 9 wherein, said actuating means is connected to the trunnion and extends exteriorly of the housing. 11. The apparatus of claim 10 wherein, the trunnion includes a load bearing universal joint. 12. The apparatus of claim 10 wherein, the housing body includes a portion of pipe, and two flat plates, one of said plates supporting the trunnion, and the second of the plates supporting the first conduit. 13. A valve comprising, a housing having first and second conduits extending therein, a pipe bend in said housing having first and second ends, the first end thereof being pivotally sealable to the first conduit, a trunnion connected to the exterior of the bend and axially aligned with the first conduit whereby the bend may be rotated about the trunnion and the first end, actuating means connected to the bend for rotating the bend about the trunnion and the first end for aligning the second end of the pipe bend with the second conduit and for moving the second end out of alignment with the second conduit in a second position, the second end of the pipe bend is tapered outwardly, the inward end of the second conduit is tapered inwardly, and both of said tapers being spaced adjacent each other and posItioned generally on a sphere having its center at the intersection of the axis of the first and second conduits, and sealing means for closing off the second end when the second end of the pipe is in the second position. 14. The apparatus of claim 13 including, a third conduit extending into the housing and positioned for alignment with the second end of the pipe bend when the bend is rotated to a third position to provide a three-way valve, further seal means for sealing the second end of the pipe bend with each of the second and third conduits. 15. A valve comprising, a housing having a first and second conduits extending therein, a pipe bend in said housing having first and second ends, the first end thereof being pivotally sealable to the first conduit, a trunnion connected to the exterior of the bend and axially aligned with the first conduit whereby the bend may be rotated about the trunnion and the first end, actuating means connected to the trunnion and extending exteriorly of the housing for rotating the bend about the trunnion and the first end for aligning the second end of the pipe bend with the second conduit and for moving the second end out of alignment with the second conduit into a second position, and sealing means for closing off the second end of the pipe when the second end of the pipe is in the second position. 16. The apparatus of claim 15 wherein the trunnion includes a load bearing universal joint. |
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