Abstract: A shipping fixture for a turbine lower casing includes a frame having a substantially rectangular shape including a pair of elongated, laterally-spaced side beams and a pair of transverse end beams. A first lateral support structure extends between the side beams at a first location corresponding to a first vertically-oriented joint between the turbine compressor casing section and the turbine combustor casing section; and a second lateral support structure includes support blocks mounted on the side beams at a second location corresponding to a second vertically-oriented joint between the turbine combustor casing section and the turbine stage casing section.

Abstract: A rotor of a turbomachine is provided. The rotor includes at least first and second rotor portions and at least first and second blades. The first and second rotor portions are configured to rotate about an axis. The first and second rotor portions have first and second rim portions, respectively, which are spaced a predetermined distance apart from one another and have a perimetrical slot therebetween. The first and second rim portions have first and second dovetail slots, respectively, extending therethrough communicating with the perimetrical slot. The first and second blades have first and second dovetail portions, respectively. The first dovetail portion is disposed in one of the first and second dovetail slots, and the second dovetail portion is disposed in the other of the first and second dovetail slots. The perimetrical slot has a sufficient size to pass the first and second blades therethrough when the first and second blades are removed from the rotor.

Abstract: A system and a method to supply a coolant to a turbine bucket of a turbine. The system includes an extraction system configured to extract air from a main compressor airflow, a supply circuit, at least a part of which is disposed at an exterior of the gas turbine, coupled to the extraction system and configured to transport the extracted air, as an ingredient of the coolant, from the extraction system to a coolant insertion region, and a cooling system, disposed proximate to the coolant insertion region of the gas turbine and coupled to the supply circuit at a position on-board the gas turbine, the cooling system being configured to supply the turbine bucket with the coolant, including the extracted air.

Abstract: A cooling system for a turbine includes a blower configured to generate a cooling gas flow to be passed through a rotor cavity of the turbine; piping configured to deliver the cooling gas flow to the turbine; and at least one valve configured to control the cooling gas flow. The piping is operatively connected to the rotor of the turbine. A method of cooling a turbine includes generating a cooling gas flow with a blower to be passed through a rotor cavity of the turbine; and delivering the cooling gas flow to the turbine.

Abstract: A cooling system for a turbine includes a blower configured to generate a cooling gas flow to be passed through a rotor cavity of the turbine; piping configured to deliver the cooling gas flow to the turbine; and at least one valve configured to control the cooling gas flow. The piping is operatively connected to the rotor of the turbine. A method of cooling a turbine includes generating a cooling gas flow with a blower to be passed through a rotor cavity of the turbine; and delivering the cooling gas flow to the turbine.

Abstract: A system and a method to supply a coolant to a turbine bucket of a turbine. The system includes an extraction system configured to extract air from a main compressor airflow, a supply circuit, at least a part of which is disposed at an exterior of the gas turbine, coupled to the extraction system and configured to transport the extracted air, as an ingredient of the coolant, from the extraction system to a coolant insertion region, and a cooling system, disposed proximate to the coolant insertion region of the gas turbine and coupled to the supply circuit at a position on-board the gas turbine, the cooling system being configured to supply the turbine bucket with the coolant, including the extracted air.

Abstract: A rotor of a turbomachine is provided. The rotor includes at least first and second rotor portions and at least first and second blades. The first and second rotor portions are configured to rotate about an axis. The first and second rotor portions have first and second rim portions, respectively, which are spaced a predetermined distance apart from one another and have a perimetrical slot therebetween. The first and second rim portions have first and second dovetail slots, respectively, extending therethrough communicating with the perimetrical slot. The first and second blades have first and second dovetail portions, respectively. The first dovetail portion is disposed in one of the first and second dovetail slots, and the second dovetail portion is disposed in the other of the first and second dovetail slots. The perimetrical slot has a sufficient size to pass the first and second blades therethrough when the first and second blades are removed from the rotor.

Abstract: Stacked wheels of the rotor of a rotary machine are axially coupled to one another by tie bolt assemblies. Each tie bolt assembly includes a stud having forward and aft ends. The aft end of the stud includes a self-locking nut to thereby lock the stud/nut assembly against rotation relative to the rotor.

Abstract: A process for the preparation of aqueous solutions of unsaturated quaternary ammonium salts corresponding to the following formula:H.sub.2 C=C(R.sub.3)--C(O)--A--R.sub.4 --N.sup.+ (R.sub.1)(R.sub.2)(R)X.sup.

Abstract: The purification by distillation of glycidyl (meth)acrylate containing light products containing epichlorohydrin and light impurities, and heavy impurities comprises: in a first stage, a distillation of the glycidyl (meth)acrylate to be purified is conducted in the presence of a first solvent, e.g., water, capable of forming a low boiling point heteroazeotrope with the light impurities and epichlorohydrin, so as to obtain a head fraction which consists essentially of a solvent-light products heteroazeotrope; and, in a second stage, the glycidyl (meth)acrylate thus freed from the light products is subjected to a distillation in the presence of a second solvent, e.g.

Abstract: The present invention relates to a process for the production of styrene by the catalytic dehydrogenation of ethylbenzene into styrene in the presence of steam which is, in a first stage, used for heating the reaction effluents, and then used as diluent for ethylbenzene. This process is characterized in that:a molar ratio of steam:ethylbenzene of between 5 and 13 is used,the temperature in the dehydrogenation reactors is between 580.degree. and 645.degree. C.,the average pressure in the first reactor is 0.6-1 kg/cm.sup.2 and those in the second and the third reactors is 0.4-0.7 kg/cm.sup.2, andthe hourly space velocity of liquid ethylbenzene is 0.20-0.35 h.sup.-1.

Abstract: For the preparation of an aqueous solution of unsaturated quaternary ammonium salts of the formula (I):H.sub.2 C.dbd.C--(R.sub.3)C(O)--A--R.sub.4 --N.sup..sym. (R.sub.1)(R.sub.2)(R).X.sup..crclbar.,e.g., methacryloyloxyethyltrimethylammonium chloridethe steps of:(a) reacting a (meth)acrylic monomer, e.g., dimethylaminoethyl methacrylate in a closed reactor, in the presence of a polymerization inhibitor, e.g., 3,5-ditert-butyl-4-hydroxytoluene, with 5 to 20% of the weight quantity of quaternizing agent, e.g., methylchloride, required for the reaction, wherein the latter agent is introduced into the reactor continuously,(b) adding water and the remainder of the quaternizing agent continuously until the required concentration of quaternary ammonium salt in water is obtained,(c) maintaining the temperature at a value of between 30.degree. and 60.degree. C.