ELLIPTICAL UNDERCUT SHOULDER FOR SPECIALTY PIPE CONNECTIONS

A tubular connector connects two tubulars of a string of tubular members. The tubular connector has a pin end tubular member having an axis and a pin end. A pin end flange is positioned on an outer diameter of the pin end and has an undercut adjacent the union of the pin end flange with the pin end. The tubular connector also has a box end tubular member having a box end. A box end shoulder is adjacent the union of the box end with the box end tubular member. The box end shoulder has an undercut thereon. The pin end is secured to the box end so that the pin end tubular member and the box end tubular member are joined, stresses applied to the pin end tubular member and the box end tubular member are distributed through the undercuts. 1. A tubular connector having an axis and comprising:a pin having a bore and external threads;an external flange on the pin having an abutment shoulder on one side and a pin transition shoulder on an opposite side and facing in an opposite direction from the abutment shoulder, the pin transition shoulder being in a plane perpendicular to the axis, the pin having a cylindrical portion with a smaller outer diameter than an outer diameter of the external flange adjoining the pin transition shoulder;a box having a bore with internal threads that engage the external threads of the pin, the box having a rim that abuts the abutment shoulder;the box having a cylindrical portion opposite the rim that is of smaller outer diameter than a portion of the box containing the internal threads, defining a box transition shoulder that is in a plane perpendicular to the axis; andan annular undercut recess located on at least one of the transition shoulders at a junction with the cylindrical portion joining said at least one of the transition shoulders, wherein, when viewed in cross section, the undercut recess has an inner curved wall that is flush with and parallel to the cylindrical portion adjoining said at least one transition shoulder.2. The tubular ...

RECIPROCATING COMPRESSOR, PRESSURE PACKING, AND METHOD

A pressure packing for a piston rod of a reciprocating compressor includes a case having a piston rod through bore. A compartment within the case is coincident with the through bore and the compartment has an axial length at least as long as a stroke of the piston rod. 1. A pressure packing for a piston rod of a reciprocating compressor , the pressure packing comprising:a case comprising a piston rod through bore; anda compartment within the case and coincident with the piston rod through bore, the compartment having an axial length at least as long as a stroke of the piston rod.2. The pressure packing of claim 1 , wherein the case further comprises a piston rod wiper at an end of the compartment.3. The pressure packing of claim 1 , further comprising a plurality of packing bodies each comprising at least one piston rod sealing ring around the piston rod through bore.4. The pressure packing of claim 1 , further comprising claim 1 , a packing ring between a first the packing body and a second the packing body; anda gas passageway extending from the case, through the first the packing body, and into the packing ring, the gas passageway comprising an exit defined by at least one radial orifice in the packing ring.5. The pressure packing of claim 1 , wherein one of the packing bodies comprises a flange comprising a plurality of bolt holes claim 1 , and the case comprises a plurality of bolt holes coaxial with the bolt holes in the flange.6. A two compartment assembly for a reciprocating compressor claim 1 , the two compartment assembly comprising:a distance piece comprising a first compartment;a pressure packing within the distance piece, the pressure packing comprising a second compartment having an axial length at least as long as a stroke of a piston rod of the reciprocating compressor; anda gas passageway extending from outside the distance piece through the pressure packing to the first compartment.7. A reciprocating compressor comprising:a piston rod;a pressure ...

Elliptical undercut shoulder for specialty pipe connectors

A tubular connector connects two tubulars of a string of tubular members. The tubular connector has a pin end tubular member having an axis (31) and a pin end (23). A pin end flange is positioned on an outer diameter of the pin end (23) and has an undercut adjacent the union of the pin end flange with the pin end. The tubular connector also has a box end ( 49) tubular member having a box end ( 49). A box end shoulder is adjacent the union of the box end ( 49) with the box end ( 49) tubular member. The box end shoulder has an undercut thereon. The pin end (23) is secured to the box end ( 49) so that the pin end tubular member and the box end ( 49) tubular member are joined, stresses applied to the pin end tubular member and the box end ( 49) tubular member are distributed through the undercuts. The most illustrative drawing is FIG. 1.

Temperature control for turbocharged engine

A cooling apparatus (10) and method for a turbocharged internal combustion engine (12). The combustion air (16) exiting a turbocharger (18) is passed over an air-to-water intercooler (40) then over an air-to-air intercooler (42) for heat exchange with liquid coolant and with ambient air (32) respectively. During periods of low ambient air temperature, the combustion air may be directed through a bypass duct (80) around the air-to-air intercooler, and further, may be heated by the coolant in the air-to-water intercooler. A multi-speed fan (44) and/or shutters (48) may be used to control the flow of ambient air across the air-to-air intercooler. A cooling duct (68) provides a flow of ambient air to the fan motor (46) during periods of operation when the flow of ambient air over the air-to-air heat exchanger is restricted by the shutters. Coolant exiting a subcooler (28) has the lowest temperature in the system and is directed to a lube oil cooler (34) for engine lubricant cooling.

PRESSURE GASKET, TWO COMPARTMENT ASSEMBLY FOR AN ALTERNATING COMPRESSOR, ALTERNATING COMPRESSOR AND METHOD FOR CONVERTING AN ALTERNATING COMPRESSOR.

GAXETA DE PRESSÃO, CONJUNTO DE DOIS COMPARTIMENTOS PARA UM COMPRESSOR ALTERNADO, COMPRESSOR ALTERNADO E MÉTODO PARA CONVERTER UM COMPRESSOR ALTERNADO. Trata-se de uma gaxeta de pressão (38) para uma haste de pistão (24) de um compressor alternado (10) que inclui um estojo (46) que tem um furo atravessante de haste de pistão (48). Um compartimento (52) dentro do estojo é coincidente com o furo atravessante (48), e o compartimento (52) tem um comprimento axial (54) pelo menos tão longo quanto um curso da haste de pistão (24).

Reciprocating compressor, pressure packing, and method

A pressure packing (38) for a piston rod (24) of a reciprocating compressor (10) includes a case (46) having a piston rod through bore (48). A compartment (52) within the case is coincident with the through bore (48) and the compartment (52) has an axial length (54) at least as long as a stroke of the piston rod (24).

bottom layer elliptical shoulder for special pipe connectors

Elliptical undercut shoulder for specialty pipe connectors

A tubular connector connects two tubulars of a string of tubular members. The tubular connector has a pin end tubular member having an axis and a pin end. A pin end flange is positioned on an outer diameter of the pin end and has an undercut adjacent the union of the pin end flange with the pin end. The tubular connector also has a box end tubular member having a box end. A box end shoulder is adjacent the union of the box end with the box end tubular member. The box end shoulder has an undercut thereon. The pin end is secured to the box end so that the pin end tubular member and the box end tubular member are joined, stresses applied to the pin end tubular member and the box end tubular member are distributed through the undercuts.

Temperature control for turbocharged engine

A cooling apparatus (10) and method for a turbocharged internal combustion engine (12). The combustion air (16) exiting a turbocharger (18) is passed over an air-to-water intercooler (40) then over an air-to-air intercooler (42) for heat exchange with liquid coolant and with ambient air (32) respectively. During periods of low ambient air temperature, the combustion air may be directed through a bypass duct (80) around the air-to-air intercooler, and further, may be heated by the coolant in the air-to-water intercooler. A multi-speed fan (44) and/or shutters (48) may be used to control the flow of ambient air across the air-to-air intercooler. A cooling duct (68) provides a flow of ambient air to the fan motor (46) during periods of operation when the flow of ambient air over the air-to-air heat exchanger is restricted by the shutters. Coolant exiting a subcooler (28) has the lowest temperature in the system and is directed to a lube oil cooler (34) for engine lubricant cooling.

Reciprocating compressor, pressure packing, and method

A pressure packing (38) for a piston rod (24) of a reciprocating compressor (10) includes a case (46) having a piston rod through bore (48). A compartment (52) within the case is coincident with the through bore (48) and the compartment (52) has an axial length (54) at least as long as a stroke of the piston rod (24).

Method for prevention/detection of mechanical overload in a reciprocating gas compressor

Mechanical overloads in a reciprocating gas compressor can cause irreparable damage to compressor components if the source of the overloads is not repaired. A method of detecting mechanical overloads includes forming a mechanical fuse that is configured to strain under overload conditions, and observing a condition of the mechanical fuse. The condition of the mechanical fuse is indicative of whether the compressor experienced a mechanical overload. By simply observing the mechanical fuse, overload conditions can be checked during routine inspections and maintenance checks.