RU2458266C1 - Coupling casing - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: coupling casing is made in the form of metal housing of cylindrical shape with bottoms; flanges to be attached to mating flanges of adjacent devices are provided in central part of the above bottoms. Housing has diametrical connector in horizontal plane, which divides it into two half-housings - upper and lower, which are connected by means of fasteners through sealing gaskets. Each bottom of housing is made in the form of annular corrugated cuff from elastic material. Edges of cuffs facing each other are fixed on external surface of the corresponding extreme ends of cylindrical part of housing; free edges are meant to be attached to mating flanges of adjacent devices by means of reducers in the form of metal flanges each of which is pressed to internal surface of edge of the appropriate cuff. Intermediate part of each cuff between edges is made in the form of concentric corrugations.

EFFECT: simpler design of casing, higher operating reliability, possibility of using the casing in installations with various overall dimensions, and provision of free access during erection and removal.

4 cl, 6 dwg

Description

The invention relates to compressor technology and can be used in the design of compressor units and assemblies with the aim of ensuring safety during operation of the installation, the supply of lubricant to the power elements of the coupling and the discharge of waste oil.

The devices of coupling casings are widely known, which are made in the form of a metal cylindrical body having a diametrical connector in the horizontal plane, dividing it into two half-bodies - the upper and lower, connected through the sealing gaskets with fasteners, while a nozzle is included in the housing telescopically, filling the missing length of the casing (see, for example, the journal "Turbines and Compressors" JSC "Research and Design Institute of Compressor Engineering" (JSC NIKITIT), issue No. 1-97, Ca kt-Petersburg, 1997, PO Box 16, section “Multipliers and Gearboxes,” p.21).

A clutch casing is also known, made in the form of an elastic body forming a bellows between a small diameter ring and a large diameter ring, while linear connectors are made along its forming (see Patent RU 2322622, published April 20, 2008).

The disadvantages of the known devices are as follows:

- design complexity;

- the difficulty of access to the coupling during its installation and dismantling;

- the inability to adjust the length of the casing in the event of a significant change in the distance between the landing surfaces of adjacent units;

- the need to perform a large volume of machining with a high degree of accuracy and class of surface finish.

- the lack of the possibility of docking with housings having a different arrangement of mounting holes.

The technical result of the invention is to simplify the design of the casing, increasing the reliability of operation, providing the possibility of using it in installations with various overall and mounting dimensions, as well as providing free access to the coupling during its installation and dismantling.

The technical result of the invention is achieved due to the fact that the coupling casing is made in the form of a cylindrical metal casing with bottoms, in the central part of the bottoms of which flanges are formed for connection to mating flanges of adjacent devices, the casing has a diametrical connector in a horizontal plane dividing it into two half-bodies, the upper and lower, connected through sealing gaskets with fasteners, while each bottom of the body is made in the form of an annular corrugated cuff of elastic material ala, the edges of which are facing each other are fixed on the outer surface of the corresponding ends of the cylindrical part of the housing, the free edges are designed for mating with the mating flanges of adjacent devices by means of adapters in the form of metal flanges, each of which is pressed against the inner surface of the edge of the corresponding cuff, while the intermediate part each cuff between the edges is made in the form of concentric corrugations.

In addition, each corrugation has a cylindrical and end sections, alternating between each other, and at least one cylindrical section of the corrugation can be made reinforced.

In addition, the corresponding edges of each cuff are fixed on the outer surface of the respective ends of the cylindrical part of the housing and pressed against the corresponding adapter by means of clamps.

The invention is illustrated by drawings, where figure 1 shows the proposed device in longitudinal section; figure 2 is the same in cross section bb; figure 3 - shows an external element In the annular cuff and the place of its attachment with clamps to the cylindrical part of the housing and to the adapter; figure 4 shows a cross section of the DD lock connection of the clamp with the tie rod; figure 5 shows the extreme position of the flanges of the casing of the coupling; figure 6 shows the position of the cuffs during installation and dismantling of the coupling.

The casing of the coupling contains a cylindrical metal casing, which has a diametrical connector in the horizontal plane, dividing it into two half-bodies - the upper 1 and lower 2, which are interconnected via sealing gaskets 3 using fasteners 4, for example, bolts (figure 2) . The casing body has bottoms made in the form of identical annular corrugated cuffs 5 having edges 6 and 7. Each cuff 5 is fastened with its own edge 7 using a clamp 8 along the outer diameter D at the tip 9 of the cylindrical part of the body. With the other edge 6, each cuff 5 is fastened by means of a clamp 8 along the inner diameter D ₁ with an adapter 10 in the form of a metal flat flange, thus forming, in the central part of the bottom, a flange that is mating with mating flanges of adjacent devices, for example, a multiplier 11 and a compressor 12. Each cuff 5 is made of an elastic material, for example, rubber.

The intermediate part of each cuff 5 between the edges 6 and 7 is made in the form of concentric corrugations, each of which has cylindrical and end sections 13 and 14, respectively, alternating between each other (figure 3). The cylindrical section 13 of the corrugation is reinforced, for example, with a metal tape 15.

On the lower half-housing 2, planks 16 are formed, to which a rack 17 is mounted, resting on the support frame 18 of the unit or on the foundation through the regulating gaskets 19 (Fig. 2).

The proposed coupling housing has the following advantages:

- simple design. For its manufacture it is not required to perform a large volume of machining with a high degree of accuracy and a class of surface finish;

- there is no need for the introduction of metal-intensive cast parts of complex design. The housing parts of the proposed casing may be made thin-walled from sheet blanks with welding boss 20 and flange 21 for connecting the oil supply and drain lines (Fig. 2);

- the clutch casing is unified, i.e. suitable for use in compressor units and installations with different distances between abutting surfaces. The use of annular corrugated cuffs 5 made of elastic material allows the casing to be joined with a significant spacing of the distances between the mating surfaces L ₁ , L ₂ due to the flexibility of the cuffs in the axial direction. Ensuring docking with cases having a different arrangement of mounting holes is carried out through the use of removable adapters 10 in the form of flat metal flanges. The casing body, consisting of half-shells 1 and 2, as well as cuffs 5 are constant and are made with dimensions that allow their use for a number of compressor units and installations;

- the use of corrugated cuffs 5 of elastic material allows you to simply solve the problem of mounting and dismounting the coupling, since in the proposed device the free space width L ₃ reaches maximum values, and the length L _{4 of the} half-shells can be minimized.

Thus, the cuff 5 can be deformed, which provides a change in the axial size of the casing depending on the distance between the abutting devices.

Claims (4)

1. The casing of the coupling, made in the form of a metal case of a cylindrical shape with bottoms, in the central part of the bottoms are flanges for connecting to the mating flanges of adjacent devices, the housing has a diametrical connector in the horizontal plane, dividing it into two half-bodies, upper and lower, connected through sealing gaskets with fasteners, characterized in that each bottom of the body is made in the form of an annular corrugated cuff of elastic material, the edges of which are facing each other are fixed on the outer surface of the respective extremities of the cylindrical body portion, the free edges are designed to mate with flanges of adjacent devices by adapters as metal flanges, each of which is pressed against the inner surface of the corresponding edge of the ferrule, wherein the intermediate portion of each cuff between the edges is made in the form of concentric corrugations. 2. The casing according to claim 1, characterized in that each corrugation has a cylindrical and end sections, alternating between each other. 3. The casing according to claim 2, characterized in that at least one cylindrical section of the corrugation is made reinforced. 4. The casing according to claim 1, characterized in that the corresponding edges of each cuff are fixed to the outer surface of the respective ends of the cylindrical part of the housing and pressed against the corresponding adapter by means of clamps.

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