RU2187703C2 - Rotary machine - Google Patents

Abstract

FIELD: hydraulic drives, pumps, compressors, gas-expansion machines in mechanical engineering; oil, chemical and other industries. SUBSTANCE: proposed rotary machine has housing, bladed rotor, inter-roller chambers and synchronizing gears. Rotor is made in form of cylindrical ferrule with blades on inner surface and end covers; one end cover is pressed on shaft of rotary machine and other cover is supported by bearing. Located inside ferrule is core with grooves for receiving separating rollers, bearings, shafts of synchronizing gears and working medium inlet and outlet passages. Inter-roller chambers are formed core, ferrule and separating rollers. One of end covers is made in form of radial-type rotor wheel; core is pressed on central immovable rod. One part of this rod is hollow; hollow end of rod is secured in end cover of rotary machine and other solid end is supported by bearing in other end cover; bearing is located inside hollow shaft. Hollow part of rod pressed in core has grooves for connection of inner cavity of central rod with working fluid outlet passages; hollow part of rod is used as passage for removal of working medium from rotary machine. EFFECT: increased specific power of machine. 3 cl, 10 dwg

Description

 The rotary machine belongs to hydraulic and pneumatic machines and is intended for use as a hydraulic actuator, pump, compressor, expander in mechanical engineering, oil, chemical and other industries.

 A device is known "Roller-blade hydraulic machine" (A.S. 1613685, IPC F 04 C 2/08, 1986), comprising a housing in the cylindrical bores of which are placed with the formation of large and small inter-roller chambers, a rotor with blades and roller separators, and the rotor is installed in bearings and kinematically connected through synchronizing gears with spacer rollers, and large and small inter-roller chambers are connected in pairs by hydraulic discharge channels, which are made in the housing.

 The disadvantage of this device is the large size and weight, which prevents the introduction of roller blades instead of gear and piston pumps and hydraulic drives.

 The increased dimensions and mass of the roller-slider machine are due to the fact that the separator rollers are located on the outer surface of the rotor (AS 1613685, IPC F 04 C 2/08, 1986, FIGS. 1, 2) directly in the cylindrical part of the housing. Due to this arrangement of the separator rollers, the diameter of the cylindrical part of the housing and the wall thickness of the housing, and therefore the mass of the roller-blade hydraulic machine, increase.

 Known roller-blade hydraulic machine (application 98113035, 03/27/2000), adopted for the closest analogue, containing a housing inside which a rotor is placed, made in the form of a cylindrical shell with blades on the inner surface and an end cover, pressed onto the shaft of the rotary machine, inter-roller chambers, inside the shell the core of the prefabricated structure is placed, in which samples are made to accommodate the separator rollers, bearings, shafts, gears synchronizing the rotation of the separator rollers and rotors of the working input and output channels Wednesday.

 The disadvantage of this design is that the core is attached to the end cover of the hydraulic machine, which limits the length of the core, and therefore the dimensions of the core and the hydraulic machine as a whole. This restriction narrows the possibilities of increasing the power of the machine and its scope.

 The technical task of the invention is the creation of a machine with greater power and the expansion of the range of use is solved by creating a machine with a core that does not have a connection with the end cover of the machine.

 To solve this problem, in a rotary machine containing a housing inside which a rotor is placed, made in the form of a cylindrical shell with blades on the inner surface and an end cover pressed onto the shaft of the rotor machine, inter-roller chambers, a core of a prefabricated structure is placed inside the shell, in which samples are made for placement of separator rollers, bearings, shafts, gears, synchronizing the rotation of the separator rollers and rotor, input and output channels of the working medium, while inter-roller chambers are formed between the core shroud and the rollers delimited cylindrical shroud includes another end cap resting on the bearing. One of the end caps of the shell is made in the form of a radial rotor wheel, and the core is pressed onto the central fixed rod of the prefabricated structure, while one part of the rod is hollow and the hollow end of the rod is fixed to the end cover of the rotary machine, the other solid end rests on the other end cover on a bearing located inside the hollow shaft of the machine, and in the hollow part of the central rod pressed into the core, samples are made connecting the inner cavity of the central rod with channels the output of the working medium from the inter-roller chambers, while the hollow part of the rod is a channel for the output of the working medium from the rotary machine.

 In addition, the number of separator rollers in a rotary machine with a single arrangement is from 1 to 4, with a pairwise arrangement - from 2 to 8, with the number of separator rollers more than one with a single arrangement and more than one pair of separator rollers with a pairwise arrangement, rollers The separators are placed in the core at equal angular distances from one another, and the number of pairs of input and output channels of the working medium from the inter-roller chambers is equal to the number of separator rollers in a single arrangement and the number of p-separators arranged in pairs with the clips. In addition, the shell blades and grooves of the separator rollers have an involute profile.

 Due to the above technical solutions and primarily due to a more efficient rotor, which is a combination of two rotors: roller and radial, when they are implemented, the rotor machine will have a specific power of up to 25% more than the prototype.

 In addition, the range of applications of a rotary machine is expanding, which can be used as a compressor for compressing gases, a compressor for generating cold.

 The essence of the invention is illustrated by drawings.

 In Fig.1 shows a rotary machine, a longitudinal section aa of Fig.2.

 Figure 2 shows a cross section bB of figure 1.

 Figure 3 - 6 shows the placement options of the separator rollers.

 In FIG. 7 - 10 depict options for the placement of the separator rollers in the core in cross section with a pair of separator rollers. The images in figure 3 - 10 are made conditionally without reference to the drawings of figures 1, 2.

 The rotor machine comprises a housing 1 with end caps 2, 3, inside which a rotor is placed, made in the form of a cylindrical shell 4 with blades 5 on the inner surface and end caps 6, 7. The end cap 6 is pressed onto the shaft 10.1 of the rotor machine. The shaft of the rotor machine is prefabricated and consists of a hollow part 10.1 and a solid part 10.2, pressed into the hollow part 10.1. The end cap 7 rests on the bearing 22. Inside the shell 4 there is a core 9 of a prefabricated design, in which samples are made to accommodate the separator rollers 17, the synchronizing gear shafts 19, 20, 21, the input channels 14 and the output 15 of the working medium. Moreover, between the core 9, the casing 4 and the separator rollers 17 are formed of inter-roller chambers 23.

 Gear 19 is leading, as it is connected directly to the end cover 6, pressed onto the shaft 10.1 of the rotary machine. The gear 19 through the intermediate gear 20 is connected with the gear 21 of the separator roller 17. The intermediate gear 20 provides the necessary direction of rotation of the separator roller 17. Together the gears 19, 20, 21 provide synchronization of rotation of the shell 4 and the splitter rollers 17. End cover 7 of the shell 4 made in the form of a rotor wheel of a radial type with blades 8, and the core 9 is pressed onto the central fixed rod 11.1 and 11.2 of the assembled structure. Part of the rod is hollow 11.2 and the solid part 11.1 is partially pressed into the hollow part. The hollow end of the rod 11.2 is fixed in the end cover 3 of the rotary machine. The end of the solid rod rests in the end cap 2 on the bearing 22 located inside the hollow shaft 10.1 of the machine. In the hollow part of the rod 11.2, pressed into the core 9, samples 11.3 are made, connecting the internal cavity of the rod 11.2 with channels for the output 15 of the working medium from the inter-roller chambers 23 through the transition chamber 12.

The hollow part of the rod 11.2 simultaneously performs several functions:
- serves as a support for the core 9,
- serves as a support for the bearing 22, on which the end cover 7 of the shell 4 rests;
- serves as a channel for the output of the working medium from the rotary machine.

 The separator roller 17 may have one or more grooves 18, usually two grooves, the depth and length of the groove 18 is equal to the height and length of the blade 5 of the shell 4, respectively, while the blade 5 and the groove 18 have an involute profile.

 The location and number of separator rollers 17 in the core 9 is selected depending on the specific purpose of the rotary machine. With a single arrangement, the number of separator rollers is from 1 to 4 (Fig. 3, 4, 5, 6), with a pairwise arrangement from 2 to 8 (Fig. 7, 8, 9, 10), while with the number of separator rollers 17 more than one in a single arrangement (Figs. 4, 5, 6) and more than one pair in a pairwise arrangement (Figs. 8, 9, 10), the separator rollers 17 are placed in the core 9 at equal angular distances from one another. The number of pairs of input channels 14, output 15 of the working medium from the inter-roller chambers 23 is equal to the number of separator rollers 17 in a single arrangement and the number of pairs of separator rollers 17 in a pairwise arrangement.

 To prevent leakage of the working medium from the inter-roller chambers 23, seals 24 are installed. To enter the working medium into the housing 1 of the rotary machine there is a channel 13 in the end cover 3 of the rotary machine.

 Let us analyze the operation of a rotary machine as a compressor for compressing air.

 When the shaft 10.2, 10.1 rotates clockwise, the end cover of the rotor rotates, which drives the casing 4 and the end cover 7. Simultaneously, the synchronizing gears 19, 20.21 and the spacer rollers are rotated 17. The end cover is made in the form of a radial wheel . The blades 8 of the end cover 7, while rotating, suck in air through the channel 13 and at the same time produce air pressurization into the input channels 14 of the core 9 and then into the inter-roller chambers 23. The blade 5 of the shell 4, while rotating, compresses the air and pushes the outlet 15 from the inter-roller chamber into the channel 15 . Next, the blade 5 passes through the groove 18 of the separator roller 17, passes again into the inter-roller chamber 23 and the cycle repeats. The separator rollers 17 rotate synchronously with the rotation of the shell 4 due to the operation of the synchronizing gears 19, 20, 21. Compressed air from the channel 15 enters the transition chamber 12 and through the samples 11.3 into the internal cavity of the central stationary rod 11.2, which serves as the channel for the output of compressed air from a rotary machine.

 Depending on the pumped working medium, the design of the radial type wheel is selected, which is the end cover 7 of the rotor.

 When using a rotary machine as a hydraulic drive expander, channels 11.2; 15 are input channels of the working environment, and channels 14, 13 are output channels of the working environment.

Claims (3)

 1. A rotary machine, comprising a housing, inside of which a rotor is placed, made in the form of a cylindrical shell with blades on the inner surface and an end cover pressed onto the shaft of the rotary machine, inter-roller chambers, a core of a prefabricated design is placed inside the shell, in which samples are made for placement of rollers -separators, bearings, shafts, gears synchronizing the rotation of the rollers of the separators and rotor, input and output channels of the working medium, characterized in that the inter-roller chambers are formed between with the shell, the shell and the separator rollers, the cylindrical shell includes another end cover resting on the bearing, one of the end covers of the shell is made in the form of a radial rotor wheel, and the core is pressed onto the central fixed rod of the prefabricated structure, while one part of the rod is hollow and the hollow end of the rod is fixed in the end cap of the rotor machine, the other solid end rests in the other end cap on the bearing located inside the hollow shaft of the machine, and in the hollow part of the cent cial rod compacted core sample formed connecting the inner cavity of the central rod with the working fluid from output channels mezhrolikovyh chambers, the hollow portion of the rod is the channel output medium from a rotary machine.  2. The machine according to claim 1, characterized in that the number of separator rollers in a single arrangement is from 1 to 4, in a pairwise arrangement - from 2 to 8, while with the number of separator rollers more than one in a single arrangement and more than one pair separator rollers in a pairwise arrangement, separator rollers are placed in the core at equal angular distances from each other, and the number of pairs of output and medium input channels from inter-roller chambers is equal to the number of separator rollers in a single arrangement and the number of pairs of separator rollers in pairs.  3. The machine according to claim 1, characterized in that the shell blades and grooves of the separator rollers have an involute profile.

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