The block of the low pressure cylinder to the condenser

 

(57) Abstract:

Usage: refers to power equipment. The essence of the invention: steam turbine unit consisting of cylinder low-pressure /low-pressure/ condenser, and these parts are connected among themselves by means of the expansion joint and are installed directly relying on its base plate. When the compensator is made in the form of a camera provided with a source of the fluid under controlled pressure to ensure the transfer of the vertical load acting on the housing module from the excess of the atmospheric pressure at the condenser. 1 Il.

The invention relates to steam turbine installations and can be used in the cylinder block low-pressure (low-pressure) to the condenser.

Most of the known steam turbines building module has a supporting belt for bearing on the Foundation of the turbine hall, and a condenser with a spring bearings for mounting on the Foundation of the basement under low-pressure. Between LPT and the capacitor is rigid connection welded connection between the outlet pipe LPT and neck of the capacitor [1] In such a steam turbine installation is provided free the atmospheric pressure, the pressure difference inside and outside the module, cause harmful vertical component of the load on the module housing, wholly perceived in this case, and when filled capacitor his weight is perceived mainly support belt housing module, which leads to the necessity of its significant enhancement to correct deformities resulting in change of the gap in the flow part.

Known steam turbine with a different execution unit module with a capacitor, which is the closest analog of the present invention. In this block housing LP cylinder is connected to the condenser through the expansion joint [2] the Capacitor of this block is mounted directly on the Foundation of the basement without the use of elastic supports, but due to its connection with the housing through the low-pressure compensator, guaranteed freedom of vertical movement module without the influence of the weight of the capacitor. In addition, this unit has a hard link, which transmits the vertical force from the excess of atmospheric pressure acting on the casing module, the body of the capacitor. However, this connection is made in the form of elastic elements on the capacitor and lever mechanisms between them and the housing module, significantly complicates the design of the unit and its manufacture, led the probability of leaks in the condenser. In addition, even when a relatively large number of elements of this housing module with the capacitor, due to their local action module housing may not be evenly around the perimeter unloaded from the harmful effects of excess of atmospheric pressure.

The present invention is the task of creating such a unit module with a capacitor, in which their relationship, providing freedom of thermal vertical movement module without affecting the weight of the condenser, however, would offload module from the harmful effects of vertical forces from the excess of atmospheric pressure on the body module with the greatest uniformity along its perimeter and with a relatively simple implementation.

This problem is solved in the block module with a capacitor, in which case LP cylinder is connected to the condenser through the expansion joint, and in which, in accordance with the essence of the present invention, the compensator is made in the form of a camera provided with a source of the fluid under controlled pressure.

This solution is uniform around the perimeter of the coupling module and the capacitor of the distribution of the vertical load from the excess of atmospheric pressure acting on the m structural block.

The essence of the present invention is illustrated in the following further detailed description of one example implementation, shown on the accompanying drawing, Fig. 1, which shows a fragment of the block module with a capacitor in place of articulation.

As seen in the drawing, the casing module 1 is connected to the condenser 2 through the compensator 3. The compensator 3 is made in the form of a chamber formed by two walls, passing around the perimeter of the articulation housing module and the capacitor 2. To the chamber of the compensator 3 is connected to the source of the fluid under controlled pressure, which, in particular, can be steam from one of the devices a steam turbine or a condensate with a temperature close to the temperature of the metal block. The steam pressure should be such as to ensure the transfer of the vertical load from the excess of atmospheric pressure acting on the housing module, which is determined by known calculation dependencies associated with the pressures and areas. Thus the stiffness of the compensator 3 can be neglected, because it must be sufficiently low so as not to hinder thermal expansion of the module, but, however, necessary to ensure the strength of cochlin is sustained fashion the load on his body. This leads to the appearance of harmful vertical component of the load from excessive atmospheric pressure, which can lead to deformation of violating a valid gaps in the flow part. However, in the described unit, thanks to the feed chamber of the compensator 3 environment under design pressure specified vertical component of the load is transferred to the capacitor 2, and thus its negative impact is neutralized. However, the compensator 3 provides freedom for thermal expansion of the module, excluding the transfer of force from the weight of the condenser with circulating water. This improves the working conditions of low-pressure cylinders, and also reduces the load on the Foundation of the turbine hall and its columns.

The block of the low pressure cylinder to the condenser, in which the cylinder body is connected to the capacitor through the compensator, wherein the compensator is made in the form of a camera provided with a source of the fluid under controlled pressure.

 

Same patents:

FIELD: mechanical engineering.

SUBSTANCE: proposed device is designed for alignment of pipe or part inside hollow turbine shaft in turbine in which said pipe or part is rigidly connected by ends with shaft at rotation. It contains bushing rigidly connected with pipe or part and enclosing the latter, elastic ring and means providing expansion of ring after assembling. Elastic ring is installed between bushing and shaft and it contains pairs of shoes made radially outwards. Shoes have thin elastic cylindrical walls whose diameter in nonworking state slightly differs from inner diameter of hollow shaft and which tightly fit inner wall of shaft after assembling.

EFFECT: possibility of reliable holding of pipe inside hollow shaft.

11 cl, 14 dwg

FIELD: mechanical engineering; turbine manufacture.

SUBSTANCE: proposed method of mounting of turbocompressor set including turbocompressor group consisting of compressor and turbine comes to mounting of turbocompressor group on mounting frame with support surfaces, fixing of rotor of turbocompressor group relative to its stator and connecting turbocompressor group with shaft of blower. Turbocompressor group is preliminarily mounted on transportation-and-process frame. For this purpose compressor and turbine are axially aligned, clearance are adjusted between rotor of turbocompressor group and housing, and assembling and checking of turbocompressor group are carried out, and reaction on support surfaces of transportation-and-process frame under feet of housing of turbocompressor set is measured by means of flexible measuring elements. Support surfaces of transportation-and-process frame are identical to support surfaces of mounting frame having equal strength characteristics. Then turbocompressor group is mounted on mounting frame of turbocompressor set, reactions of support surfaces of mounting frame under feet of housing of turbocompressor set are adjusted by means of flexible measuring elements to make them equal to reaction of support surfaces of transportation-and-process frame under feet of housing of turbocompressor set with provision of coaxially of rotor of turbocompressor group to shaft of blower, flexible measuring elements are successively replaced by adjusting gasket providing spatial arrangement of feet of turbocompressor set at adjusted reactions of support surfaces.

EFFECT: reduced time of mounting.

5 cl, 6 dwg

Gas-turbine plant // 2263807

FIELD: mechanical engineering.

SUBSTANCE: proposed gas-turbine plant includes gas-turbine engine, intake and outlet devices, engine frame and plant frame. Engine with intake device is mounted one engine frame. Outlet device and engine frame are secured on plant frame. Additional protective container covers engine and intake and outlet devices. Side walls of additional protective container are rigidly connected with frame of plant, being made load-bearing. Ratio of height of container side wall to height of plant frame is 5-10.

EFFECT: improved reliability, conditions of servicing and transportation by rail.

2 dwg

FIELD: mechanical engineering: gas-turbine power plants.

SUBSTANCE: invention relates to thermal protection of objects and it can be used in manufacture of gas lines of exhaust ducts of gas-turbine power plant. Proposed gas line of exhaust duct contains inner load-bearing shell with supports on foundation BASE, outer protective shell and heat insulating material in between. Outer shell is rigidly attached to at least one of supports of load-bearing shell and is connected with others by means of horizontal round rod. Said rod passes square to axis of gas line through hole in support and through slots in outer shell. Slots are made with length not less than value of expansion of load-bearing shell.

EFFECT: improved reliability and manufacturability of gas line of exhaust duct owing to reduced number of components and dispensing with heat transfer and deformable couple elements between outer and inner shells.

2 cl, 4 dwg

FIELD: heat-power engineering.

SUBSTANCE: invention is attributed to heat-power engineering and can be used at power plants during steam turbines operation. Thermal expansion of cylinder is performed from anchor point located on the lug of cylinder exhaust part and formed by intersection of horizontal longitudinal and lateral dowels axes, and axial position of cylinder is fixed by longitudinal horizontal and vertical dowels. Additional anchor point in the form of intersecting of horizontal longitudinal and lateral dowels axes is created in the front bearing housing, front lugs of cylinder are rested on supports not connected with front bearing housing, and as a result thermal moving of front bearing housing and cylinder is executed.

EFFECT: providing of reliable thermal moving of front bearing housing and cylinder of steam turbine.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: turbine running on waste gases incorporates a turbine casing, a shaft running in the casing bearings, a turbine wheel fitted on the shaft and a thermal protective wall. The aforesaid wall constricts, along with the turbine casing, the turbine wheel blasting channel and incorporates two outward supports, the first of them being designed to rest on the bearing housing, the second one on the turbine casing. In compliance with the first version at least one support represents peripheral edges designed to rest on the bearing housing and/or the turbine casing peripheral edges. In compliance with the other version, the thermal protective wall has in the area of the first or the second support the centering cams entering the radial grooves arranged in the bearing housing or the turbine casing. In compliance with the third version the said thermal protective wall incorporates in the area of the first or the second support the grooves receiving the aforesaid centering cams arranged on the bearing housing or the turbine casing. The other inventions of the proposed set relate to the thermal protective wall, the bearing housing and the turbine casing to be used in aforesaid turbine running on waste gases.

EFFECT: simple and reliable turbine casing centering relative to shaft running in bearing with extra components.

9 cl, 6 dwg

FIELD: machine building.

SUBSTANCE: support adjusting device of cases of double-circuit gas-turbine motor consists of external case through poles mutually tied with support of gas turbines by means of unit connections with slides in lengthwise slots. The external case is made in form of successively arranged the front and back parts rigidly interconnected with separate brackets positioned along circumference. Under and between the said parts of the external case there is additionally installed an internal ring. The unit connections with slides in lengthwise slots are interconnected with the said brackets and the internal ring, while the said poles of the turbine support are joined with the said internal ring.

EFFECT: compensation of temperature drops of interconnected units of internal and external circuits, raised processability of assembly-disassembly, maintenance and repair of devices for case connection.

3 cl, 7 dwg

FIELD: engines and pumps.

SUBSTANCE: assembly method of gas-turbine engine involves attachment of the second module to the first module by installing the second shaft of the second module together with inner bearing race into inner cavity of trunnion rigidly attached to the above first module and containing outer bearing race. When implementing the method, first, the second module with the second shaft is butt joint with the first module to the specified distance to the above trunnion. Then, the second shaft is aligned in relation to trunnion; at that, alignment is performed based on measurement of distance deviation in relation to initial position of trunnion. After that, thermal expansion of outer bearing race is provided by heating its outer surface and butt joint of the second module is completed. The other invention refers to the device for implementing the above method, which includes movable frame on which ring-shaped trunnion heating device is installed; at least one temperature sensor intended to measure the trunnion temperature, and measuring device of deviation of radial distance between shaft, which is to be installed inside the trunnion, and initial position of trunnion.

EFFECT: inventions allow reducing damage risk of inter-shaft bearing during assembly of gas-turbine engine.

14 cl, 9 dwg

FIELD: machine building.

SUBSTANCE: compressor equipment support contains supporting pad 15 with holes 3 to install attaching parts 4 and with threaded holes 5 for pressure screws 6, thrust bearing 8 installed under supporting pad 15 with gap H, control plates 7 and a layer of epoxide compound 9 and support frame 10 with holes to mount attaching parts 4 and supporting surfaces 12 for pressure screws 6, fastened with supporting pad 15 by means of attaching parts 4 with a possibility of adjusting its height above supporting frame 10 with pressure screws 6. Inside control plates 7 are mounted between thrust bearing 8 and supporting frame 10 and the layer of epoxide compound 9 fills gap H between thrust bearing 8 and supporting pad 2. Also, thrust bearing 8 is made with flanges13 along the perimetre, forming an overlap with lateral surfaces 14 of supporting pad 2 capable of moving vertically.

EFFECT: ensured required contact of the engine supports with the foundation through adjustment of the control plates with consideration for their sizes.

2 dwg

Power plant // 2451805

FIELD: engines and pumps.

SUBSTANCE: proposed power plant comprises gas turbine engine, bed, first and second moving supports. Said gas turbine engine has first and second sections, and lengthwise axis. Said bend makes support for power plant. First moving support is supported by bed in contact with gas turbine engine first section to allows, at least, partial displacement of gas turbine engine first section in servicing. First moving support supports, at least, partially, gas turbine engine first section in its displacement from first section in guide from lengthwise axis irrespective of gas turbine engine second section. Said guide is inclined to lengthwise axis.

EFFECT: ease of servicing.

9 cl, 13 dwg

Up!