US3726306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refinery control valve
Assignee: TEXAS ALLOY PROD CO
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Filing: 1971-05-20
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Granted: 1973-04-10
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Expires: 1991-05-20
Abstract
Abstract An Improved Refinery Control Valve of the slide or disc type for particular use in fluid catalytic cracking units at high temperatures and velocities with abrasive materials. The entire valve assembly comprising the inlet liner, with port guides and slide, are removable as a unit for repair or replacement, so that the valve body need not be removed from the refinery unit during a turn around.
Inventors
- 👤 H Purvis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:04
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/04; F16K27/044; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7036; Y10T137/7504; Y10T137/7668; Y10T137/7722; Y10T137/7781
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
145 words
An improved refinery control valve of the slide type for use with abrasive materials at high temperatures, including a body having a valve chamber with an upstream entrance area, a valve assembly attachable as a unit within the valve chamber of the body, said valve assembly including, an orifice plate having an orifice therein adapted to be attached the body within the valve chamber at its upstream entrance area, guides disposed in spaced relation to each other and secured to opposite downstream sides of the orifice plate, each of said guides being spaced away from and out of the path of flow through the orifice, a slide, interfitting tongues on and grooves in said slide and said guides for sliding the slide in the guides on the orifice plate over the orifice to control flow therethrough, and means for sliding the slide within the guides.
Claim 2
Dependent Claim
145 words
An improved refinery control valve of the slide type for use with abrasive materials at high temperatures, including a body having a valve chamber with an upstream entrance area, a valve assembly attachable as a unit within the valve chamber of the body, said valve assembly including, an orifice plate having an orifice therein adapted to be attached the body within the valve chamber at its upstream entrance area, guides disposed in spaced relation to each other and secured to opposite downstream sides of the orifice plate, each of said guides being spaced away from and out of the path of flow through the orifice, a slide, interfitting tongues on and grooves in said slide and said guides for sliding the slide in the guides on the orifice plate over the orifice to control flow therethrough, and means for sliding the slide within the guides.
Claim 3
Dependent Claim
86 words
The invention of claim 1 including: an orifice cone mounted on the orifice plate at the orifice projecting upstream into the upstream entrance area, the orifice cone forming a transition area of the entrance area to the orifice, the valve chamber being open at one end and having sufficient space in the direction of the path of flow for insertion into and removal of the orifice plate, guides, slide and cone from the valve chamber, and a removable closure closing the opening to the valve chamber.
Claim 4
Dependent Claim
43 words
The invention of claim 2 wherein the inner surfaces of the orifice cone, the mounting surfaces of the interfitting tongues and grooves of the guides and slide, the orifice area of the orifice plate, and the upstream side of the slide are hardfaced.
Claim 5
Dependent Claim
171 words
An internal valve assembly for use in the valve chamber of the body of a refinery control valve of the slide type, the assembly including: an orifice plate having an orifice therein adapted to be attached to the body in the valve chamber at its upstream entrance area, an orifice cone attached to the upstream side of the orifice plate which projects into the upstream entrance area to the valve chamber when the orifice plate is aTtached as aforesaid, guides disposed in spaced relation to each other and secured to opposite downstream sides of the orifice plate, each of said guides being spaced away from and out of the path of flow through the orifice, a slide, and interfitting tongues on and grooves in said slide and said guides for sliding the slide in the guides on the orifice plate and over the orifice to control flow therethrough, the orifice plate, orifice cone, guides and slide being insertable into and removable as a unit from the valve chamber of the body.
Claim 6
Dependent Claim
171 words
An internal valve assembly for use in the valve chamber of the body of a refinery control valve of the slide type, the assembly including: an orifice plate having an orifice therein adapted to be attached to the body in the valve chamber at its upstream entrance area, an orifice cone attached to the upstream side of the orifice plate which projects into the upstream entrance area to the valve chamber when the orifice plate is aTtached as aforesaid, guides disposed in spaced relation to each other and secured to opposite downstream sides of the orifice plate, each of said guides being spaced away from and out of the path of flow through the orifice, a slide, and interfitting tongues on and grooves in said slide and said guides for sliding the slide in the guides on the orifice plate and over the orifice to control flow therethrough, the orifice plate, orifice cone, guides and slide being insertable into and removable as a unit from the valve chamber of the body.
Claim 7
Dependent Claim
43 words
The invention of claim 4 wherein the inner surfaces of the orifice cone, the mounting surfaces of the interfitting tongues and grooves of the guides and slide, the orifice area of the orifice plate, and the upstream side of the slide are hardfaced.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |