摘要:
A combustion chamber in a gas-turbine, wherein the combustion chamber has an annular-toroidal-shaped interior space. A plurality of burners are arranged on the periphery of the combustion chamber, wherein the burners are operatively connected to the annular-toroidal-shaped interior space so as to initiate a swirl flow. The swirl flow forms a vortex core and the vortex core ensures the stability of the flame front.
摘要:
In a gas turbine combustion chamber (1) cooled by means of impingement cooling, the height of the cooling duct (5) formed by the perforated plate (3) and the impingement surface (4) increases continuously in the transverse flow direction to correspond with the supply of cooling air. Tubes (7) are arranged in the cooling duct (5) on the holes (6) of the perforated plate (3) in such a way that the impingement air meets the impingement surface (4) at right angles, the height of the tubes (7) increasing in the transverse flow direction in such a way that the distance between the tubes (7) and the impingement surface (4) is constant over the complete length of the cooling duct (5). By this means, the heat transfer coefficient remains constant along the impingement cooling section and uniform removal of heat is made possible. The cooling effect can be specifically controlled by a suitable choice of the diameter of the holes (6) and the height of the tubes (7).
摘要:
Back pressure control devices used to control fluid pressure in a wellbore require various utilities for operation, such as an air supply. With the use of an air supply, the continued operation of one or more back pressure control devices may be achieved when supply of utilities for operation of the back pressure control devices are intentionally or unintentionally interrupted.
摘要:
An electric machine has a housing with an inner circumference; a stator which is inserted into the housing so that an outer circumference of the stator is located opposite the inner circumference of the housing, a clearance fit being formed between the inner circumference of the housing and the outer circumference of the stator; at least one fastening element, each fastening element connects the stator to the housing by positive engagement so that the stator is held at the housing so as to be fixed with respect to rotation relative to it; and a rotor which is rotatably mounted in the housing in a radial direction of the electric machine inwardly of the stator.
摘要:
A trim insert for a choke assembly is disclosed, wherein the trim insert is a tubular member with a substantially constant inner diameter. A first end of the device is positioned within an adjacent upstream sleeve and a second end is sealingly retained within the discharge channel of the choke assembly. A flange coaxially retains the tubular member between the sleeve and a shoulder of the choke body. The trim insert is made of an erosion resistant material, such as tungsten carbide, hardened steel, or a ceramic. Additionally, the inner surface of the tubular member may be coated with a hardening compound to provide additional erosion resistance.
摘要:
A replaceable sleeve insert for a choke assembly is disclosed, wherein the replaceable sleeve insert has a tubular member coaxially and sealingly retained within an upper body section of the choke assembly. The tubular member is also sealed against the bonnet. The tubular member has an inner diameter sufficient to accommodate coaxial linear displacement of a shuttle assembly and an outer diameter sufficient to fit within an upper body orifice in the upper body section. At least one attachment member outwardly extends from the tubular member and is retained between the upper body section and the bonnet. The tubular member has an opening in the sleeve wall to provide fluid communication from the choke inlet to the interior of the tubular member. A method of assembling a choke with a replaceable sleeve insert is also described.
摘要:
A flow diverter and a vacuum blower for vibrating screen separator assembly. The flow diverter decelerates and increases the exposed surface of materials. The exhaust blower removes vapors from the materials.
摘要:
An embodiment of the present invention, accordingly, is directed to a tensioning device for tensioning a screen relative to a wall of a separator in a manner so that the proper tension can be applied to the screen in a relatively quick manner and yet the screen can be easily removed and a new one installed.
摘要:
A relatively simple, effort-saving and cost-saving arrangement and a corresponding method for repair and/or maintenance work in the inner casing of a multishell turbomachine is provided. To this end, after a tool carrier is put into the outer casing of a turbinemachine, the connecting elements of top part and bottom part of the inner casing are slackened. The top part of the inner casing is then lifted in the outer casing to such an extent that the tool carrier can reach into the inner casing. To this end, at least one locating fixture for a lifting device is arranged on the top part. A radial distance is formed between the at least one outer casing and the inner casing, the radial distance corresponding to at least the radial extent of a tool carrier to be introduced into the inner casing.
摘要:
In an arrangement for influencing the radial clearance of the blading of an axial-flow, highly loaded compressor which essentially comprises a rotor (1) equipped with moving blades (2) and a blade carrier (3) which is equipped with guide blades (4) and is hung in a casing (5), the blade carrier (3) has long and narrow mountings (7) for the guide blades (4), at least one hollow space (9) being arranged in the guide-blade roots (8), a hollow space (10) being present in each case in the embedded state in the peripheral direction between the guide-blade root (8), the two mountings (7) for a guide blade (4) and the blade carrier (3), a further hollow space (11) being present in each case in the peripheral direction between the blade carrier (3) and the mountings (7) for two successive guide blades (4), which hollow space (11) is defined by a plurality of segments (12) distributed over the periphery and connected to the guide-blade roots (8), and the hollow spaces (9, 10, 11) being filled with insulating material (15).