Turbocompressor set mounting method

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

 

The invention relates to a method of mounting, for example, gas turbine unit, in particular its turbogroup, on the base plate. The invention can be used in the turbine building during the installation of the new turbine units or other complex installations requiring complex adjustment, reconciliation separate heavy and high-precision assemblies, overhaul or modernization of turbine units of all types.

Known invention "Bearing housing of the turbomachine", patent RU 2037054, IPC F 01 D 25/28, publ. 09.06.1995, including the lower supporting element, the upper supporting element on which you installed the paw of the housing, and an elastic measuring element mounted in the support of the turbomachine. Elastic measuring element provides the necessary flexibility and measurement efforts in the place of articulation of the turbomachine to the base. However, this element remains in place during operation of the turbomachine and serves only as a support and retainer pins.

The closest technical solution is the invention "Method of replacing a single machine and a removable block, patent RU No. 2144642, IPC F 16 M 5/00, publ. 20.01.2000, including during the phase of preparation for the installation of individual machines construction metal frame, which sets a new car. The method allows to exclude concrete and reduce installation time, however, n is simplifies the time consuming process of adjusting the position of the new machine on the base plate.

When installing units, consisting of several parts with complex massive body, which is the stator with the supporting surfaces for the rotating parts of the unit, a lot of time to spend on the alignment of individual parts of the Assembly and alignment of the gaps between the rotating parts and the housing. Because of the massive sites have assembled the rigidity is low, install zoonoses and gaps requires a lot of time and, in addition, if adversely established tolerances on dimensions can lead to jamming of the unit at the start-up phase of operation of the unit.

The objective of the proposed technical solution is to substantially simplify installation, improve the quality of adjusting operations and, consequently, reducing the time of installation of the turbo-compressor unit with a guaranteed ensuring alignment of its individual parts and clearances between rotating parts of the unit and the case.

The technical result is a significant reduction in installation time.

The technical problem is solved as follows.

The method of installation of the turbo compressor unit comprised of a turbo-compressor group 1, consisting, including from the compressor 2 and the turbine 3, consists of installing the turbo compressor group on the installation frame 4 with the support surfaces "a" and the unity it with the shaft 5 of the compressor 6. What's new is that pre-transport-technological frame 7 is mounted turbo-compressor group unit, which expose the alignment of the compressor 2 and the turbine 3, set the clearances between the rotor 8 turbo-compressor unit and the housing 9, perform a full build and turbo-compressor control group, and then fixed with the help of technological dowels 10 turbo-compressor rotor Assembly relative to its stator and measure the response on the abutment surfaces "b" transport - technological frame 7 under the legs 11 of the casing of the turbo-compressor unit with the help of measuring elastic elements (not shown). While supporting surface "b" transport - technological frame 7 is identical to the bearing surfaces "and" installation frame 4 and have the same strength characteristics. Then reinstall turbo-compressor group on the installation frame turbo-compressor unit, set the reaction of the support surfaces "and" installation frame 4 under the legs 11 of the housing 9 turbo-compressor units with the help of measuring elastic elements equal reaction abutment surfaces "b" transport - technological frame 7 under the paws of the turbo compressor housing group to ensure alignment of the rotor 8 turbo-compressor units of the shaft 5 of the compressor and consistently replaced and the measurement of the elastic elements on the fitting strip 12, providing the spatial arrangement of the lamps 11 turbo-compressor unit when exhibited reactions supporting surfaces. As a measuring elastic elements use a calibrated disc springs with an indicator of the amount of compression springs. The reaction of the support surface installation frame beneath the paws of the casing of the turbo-compressor unit is set with an accuracy of 5-7% of the magnitude response of the reference surfaces "b". After the exhibition reactions supporting surfaces "and" install dowels 13 the fix-points 14 turbo-compressor units. Install the connecting group 15, including the turbine rotor 8 turbo-compressor group-bearing unit 16 and the input shaft of the supercharger 5, ensuring their alignment relative to the shaft of the compressor 5 through the fitting strips 17 which are located under the housing 18 of the bearing unit 16.

The proposed method is illustrated drawings, which depict:

Figure 1 - General view of the mounted turbo-compressor unit mounted on mounting frame;

Figure 2 - design of transport and technological frames, plan and side view;

Figure 3 shows a section of the support legs turbocompressor unit with fitting the dowels fixed to the supporting surface installation frame;

Figure 4 shows a connecting group between naked what ettlem and the rotor of the turbo-compressor unit, mounted on mounting frame;

Figure 5 - key fix-point turbo-compressor units;

Figure 6 shows the fixation with technological wedges turbo-compressor rotor Assembly relative to its stator.

The method is as follows. Mounted turbo-compressor group is placed on the transport-technological frame 7 by legs 11 turbo-compressor unit through an elastic measuring element on surfaces "b" transport - technological frame. Mount the rotor 8 inside 9 turbo-compressor group 1, set the alignment of the rotor of the compressor 2 and the turbine rotor 3 and the gaps between the rotor of the turbo-compressor unit and its housing, fix their mutual arrangement technological dowels 10. Then measure the degree of response of the reference surfaces "b" technological frame 7, which measure the amount of sagging of the Belleville springs, which are designed for stiffness in the range of loads that can occur during installation of the concrete unit. The Belleville springs are pre-calibrated and when subsidence work in that part of the curve, characterizing its rigidity, which provides a directly proportional dependence between the value of the support reaction and the amount of subsidence Belleville springs. Measured response of the reference surface is Hosta "b" transport-technological frame 7, why, for example, measure the amount of sagging springs. Attach the turbo-compressor group frame 7, and in the assembled and adjusted as transport turbo-compressor group to the place of installation. Then turbo-compressor group 1 reinstall on the supporting surface "and" installation frame 4 between the legs 11 and the support surfaces "and" install elastic measuring element, for example the same disc springs, which were used to transport and process the frame 7, exhibit reaction support surface "a" of the same magnitude as the reaction of the support surfaces "b" transport-technological frame 7. Exhibition turbo-compressor group 1 on the reactions of the supports, which is carried out on the installation frame 4 becomes technologically possible due to the low stiffness of the group that provides the guarantee fit of the legs 11 to all bearing surfaces. Once provided with the identity of the reactions of the supporting surfaces with an accuracy of up to 5-7% of the value of the reaction and at the same time exhibited the alignment of a rotor of the turbo-compressor group 8 relative to the shaft 5 of the compressor 6, successively replace the elastic measuring element for fitting strip 12, which is driven by means, for example, grinding, providing a gap between the supporting surface "a" of the mounting plate 4 and lipami turbo-compressor group considering the magnitude of subsidence for example, the Belleville springs in the exhibition reactions supporting surfaces. Then set the technology of the pins 13 in the fix-points 14 turbo-compressor units, which ensure the stability of the achieved characteristics of the unit. Connect via a connecting group 15 of the rotor 8 turbo-compressor group 1 with the shaft 5 of the compressor. Moreover, the bearing housing 18 of the band 16 is mounted for movement on fitting the strips 17 which are located under the housing 18 of the bearing unit 16 to provide docking axis of the rotor 8 and the shaft 5.

Thus, we achieve a technical result in significant simplify installation, improve the quality of adjusting operations and, consequently, reduce the time of installation of the turbo-compressor unit with a guaranteed ensuring alignment of its individual parts and clearances between rotating parts of the unit and the case.

The proposed method can be applied to all complex units consisting of several heavy sites that require precise alignment and Assembly having low rigidity. Fitting spacers 12 are supplied complete with turbo-compressor group, mounted on the transport-technological frame. In addition, in the future, if the mode of operation of the turbo-compressor unit reliability you tawki clearances between rotating parts and the housing provides access to the operating mode, accompanied by thermal expansion of the parts, without touching the rotating parts of the rotor to the body, because the gaps are evenly distributed and exhibited the most optimally within tolerances. The proposed method provides no jamming rotating parts of the unit when the operating condition at the time of its launch.

1. The method of installation of the turbo compressor unit comprised of a turbo-compressor group including, from the compressor and the turbine, which in its installation on the installation frame with the supporting surfaces, fixing the rotor of the turbo-compressor group relative to its stator and connecting it with the shaft of the compressor, wherein the pre-transport-technological frame mounted turbo-compressor group unit, which expose the alignment of compressor and turbine, expose the gaps between the rotor of the turbo-compressor group and the housing, provide a complete Assembly and the turbo-compressor control group to measure the reaction on the supporting surface of the transport-technological frame beneath the paws of the turbo compressor housing units with using the measuring elastic elements, and the supporting surface of the transport-technological frame is identical to the bearing surfaces of the mounting frame and have the same strength characteristics, PE is ustanavlivat turbo-compressor group on the installation frame turbo-compressor unit, put the reaction support surface installation frame beneath the paws of the casing of the turbo-compressor unit with the help of measuring elastic elements equal reaction support surface of the transport-technological frame beneath the paws of the casing of the turbo-compressor unit, ensuring alignment of the rotor of the turbo-compressor group the shaft of the supercharger, consistently replace measuring elastic elements on fitting gaskets ensuring the spatial arrangement of the clutches of the turbo-compressor unit when exhibited reactions supporting surfaces.

2. The mounting method according to claim 1, characterized in that the reaction of the supports is measured by measuring the elastic elements made in the form of a calibrated disc springs with an indicator of the amount of compression springs.

3. The mounting method according to claim 1, characterized in that the reaction of the support surface installation frame beneath the paws of the casing of the turbo-compressor unit is set with an accuracy of 5-7% of the amount of support reactions.

4. The mounting method according to claim 1, characterized in that after vystavki reactions bearings set of keys fix-points of the turbo-compressor unit.

5. The mounting method according to claim 4, wherein the set of connecting group comprising a turbine rotor turbo-compressor group, bearing unit and the input shaft of the supercharger ofensure their alignment relative to the shaft of the compressor through the fitting gaskets located under the bearing.



 

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