Abstract:
A seat system for a coke drum deheading valve can include a groove in the surface of the seat for supplying a lubricant to the surface of the seat. Various channels can be formed in the body of the seat that connect to the groove. In this way, lubricant can be flowed through the channels and into the groove to provide lubrication between the surface of the seat and the blind. The seat system can also include a split ring packing gland to facilitate the formation of a seal within the deheading valve. The split ring packing gland can be used to retain and compress packing positioned between a retaining ring and a dynamic seat such that when the packing is compressed, an improved seal is formed. By improving the seal, less steam can be required during the delayed coking process thereby increasing the efficiency of the system.
Abstract:
The present invention is a piston valve device (25) for use in connection with the fire protection industry, and including features for protecting against corrosion. The corrosion protection features include a replaceable sacrificial zinc anode (8) for detecting the presence of corrosion within the piston valve device (25), a grease fitting (22) for injecting grease or lubricant material between a valve spindle (9) for moving a piston member (4) between open and closed positions, and a valve body (1) or bushing elements (14, 16) to protect against corrosion. The piston valve member (4) is made of polymeric material to protect against corrosion.
Abstract:
Die Erfindung betrifft ein elektromagnetisch ansteuerbares Ventil zur Regelung der Fördermenge einer Hochdruckpumpe in einem Kraftstoffeinspritzsystem, umfassend einen Ventilkolben (1), der über eine Kolbenführung (2) axial verschiebbar geführt ist. Erfindungsgemäß besitzt der Ventilkolben (1) eine zumindest teilweise strukturierte Außenumfangsfläche (3) zur Verbesserung der Schmierung und/oder Reduzierung der Reibung zwischen der Kolbenführung (2) und dem Ventilkolben (1). Ferner betrifft die Erfindung eine Hochdruckpumpe für ein Kraftstoffeinspritzsystem mit einem solchen Ventil.
Abstract:
Die Erfindung betrifft eine Anordnung (1) eines Schieberventils (2) und eines Dichtungssystems (3) zum Abdichten des Schieberventils (2), mit einer Feststoffschmierung zwischen Schieberventil (2) und Dichtungssystem (3), zur Verwendung bei einer Wärmekraftmaschine, wobei das Schieberventil (2) eine Gleitdichtfläche (8) aufweist, auf der das Dichtungssystem (3) gleitet, das einen Arbeitsraum und/oder Leitungen der Wärmekraftmaschine zumindest temporär abdichtet. Eine solche Anordnung ist erfindungsgemäß gekennzeichnet durch mindestens einen Festschmierstoffabriebskörper (4), der ein vom Dichtungssystem (3) unabhängiges Bauteil darstellt, und der mindestens eine (8) der zu schmierenden Oberflächen (8, 9) des tribologi- schen Systems von Schieberventilen (2) und Dichtungssystemen (3) berührt, und der, bei Relativbewegung zu dieser zu schmierenden Oberfläche (8 bzw. 9), auf diese Festschmierstoff durch Abrieb überträgt, der zumindest der partiellen Schmierung der Oberfläche (8 bzw. 9) dient. Eine solche Anordnung ermöglicht den Trockenlauf von Dichtungssystemen gegen Schieberventile in Wärmekraftmaschinen ohne hohe Verschleißraten an Gleitdichtflächen der Dichtungssysteme hervorzurufen.
Abstract:
In order to free a seized valve, an inspection port (52) is formed in a wall of the valve body and the areas where the valve is seized are determined. One or more injection ports (54) are formed in the valve body adjacent to the seized portions of the valve, pressurised fluid (preferably an insoluble lubricant having a very high cone penetration) is injected through the or each injection port and the injection ports are then closed.
Abstract:
A system including a valve (10), including a valve body (52) having an interior volume (24) and a bore along a first axis, a stem (14) extending along a second axis, and a flow control element (16) coupled to the stem, wherein the stem is configured to selectively move the flow control element through the interior volume between a closed position and an open position relative to the bore, and a valve insert system (36) configured reduce a size of the interior volume and to guide a lubricant to reduce wear on the flow control element.
Abstract:
A grease fitting replacement tool Includes a housing, a shaft, an adaptive socket, a loosening device, loosening device includes a packed coupling, a stem housing, and a stem drive system, the stem drive system includes a stem, a threaded mount, and an actuator, a main valve, a fall-out trap, a pressure port valve, a vent valve, a pressure gauge, and a temporary mounting system. A method of using a grease fitting replacement tool to replace a grease fitting of a piece of equipment while the piece of equipment remains in operation.
Abstract:
A grease tool (63) lubricates a valve (11) having an actuator assembly (33) for moving a valve element (25) of the valve. The tool has a housing (65) with a piston (81) carried in a bore (71). The housing is open for inserting and sealing a portion of the actuator assembly (45 within 33) into the bore. A fill port (93) in the housing allows grease to be introduced into the bore. A piston rod (85) joins the piston and has external threads engaging internal threads of the housing, so that rotating the piston rod causes the piston to move axially. A lever (101) is mounted to the housing for imparting rotation to the housing. A lock pin (79) extends through a side wall of the housing to engage the actuator assembly to cause the actuator assembly to rotate in unison with the housing.
Abstract:
The invention provides a powder coating composition comprising of thermoplastic polymers, ceramic particles, and cermet particles for lowering the friction coefficient, and improving wear and corrosion resistance of coated surfaces in high-temperature, high-pressure, and corrosive environments. It also provides a method of coating application for improving adhesion of the coating to the substrate. The coating compositions are devoid of volatile organic solvents and can be applied on surfaces using thermal spraying, compression molding and other particle sintering approaches. A multilayer architecture consisting of an adhesive bottom layer and a non-adhesive, low friction top layer is disclosed. The coating can be used in oil and gas production and seawater injection.
Abstract:
A lubrication system for a gate valve having a moveable gate and a gate sealing element located between first and second housing sections. The lubrication system includes a cartridge having a lubricant for lubricating the gate sealing element. The lubrication system also includes a plunger element for moving the lubricant from the cartridge to the gate sealing element. In addition, the lubrication system includes a lubricant passageway located between the plunger element and the gate sealing element for supplying the lubricant moved by the plunger element to the gate sealing element. Further, the lubrication system includes a plunger contact member attached to the gate by an attachment element wherein the plunger contact element engages the plunger element. Energizing an actuator causes movement of the gate and corresponding movement of the plunger element to cause the lubricant to move from the cartridge to the gate sealing element.