CN104235031A - Multistage cantilever compressor - Google Patents
Multistage cantilever compressor Download PDFInfo
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- CN104235031A CN104235031A CN201310244072.6A CN201310244072A CN104235031A CN 104235031 A CN104235031 A CN 104235031A CN 201310244072 A CN201310244072 A CN 201310244072A CN 104235031 A CN104235031 A CN 104235031A
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Abstract
The invention discloses a multistage cantilever compressor. The multistage cantilever compressor comprises a shell, a plurality of impellers and a motor. A plurality of compression cavities are formed in the shell which is provided with an inlet and an outlet, the forefront compression cavity is communicated with the outside through the inlet, and the hindmost compression cavity is communicated with the outside through the outlet. The plurality of impellers are correspondingly and rotatably arranged in the plurality of compression cavities, each impeller is internally provided with an air passage, and the air passages of the impellers are communicated. The motor is arranged on the shell and comprises a stator and a rotor, the front portion of the rotor is rotatably supported on the shell and respectively connected with the plurality of impellers to enable the motor to drive the impellers to rotate, and the rear portion of the rotor is rotatably suspended in the stator. The multistage cantilever compressor has the advantages of high circulation efficiency, simple structure, simplicity in assembly, low cost and the like.
Description
Technical field
The present invention relates to gas compression field, in particular to a kind of cantilever multistage compressor.
Background technique
In centrifugal compressor, the kinetic energy of gas changes into pressure energy by vane rotary, realizes the function of pressurized gas.Existing centrifugal compressor, comprises the parts such as air inlet, compression, exhaust and driving.Overall structure types has single-stage cantilever or Double-support-type, multistage Double-support-type.If wherein compression member single stage compression, then the gas flow rates of compression member is very fast, causes flow losses comparatively large, affects compression and the cycle efficiency of compressor.If the structure that drive part adopts both-end support rotor placed in the middle, then can cause the complex structure of compressor, assembling trouble, significantly adds the cost of compressor.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, one object of the present invention is to propose the cantilever multistage compressor that a kind of cycle efficiency is high, structure simple, assembling is easy, cost is low.
For achieving the above object, the present invention proposes a kind of cantilever multistage compressor, described cantilever multistage compressor comprises: shell, have multiple compression chamber in described shell, described shell is provided with and will is arranged in an import be in communication with the outside of forefront in multiple described compression chamber and multiple described compression chamber is positioned at an outlet be in communication with the outside of rearmost; Multiple impeller, respectively accordingly and be rotatably located in multiple described compression chamber, have air channel in each described impeller, the described air channel of multiple described impeller is interconnected multiple described impeller; And motor, described motor is established on the housing, described motor comprises stators and rotators, the front portion of described rotor rotatably supports on the housing and is connected so that described motor drives multiple described vane rotary with multiple described impeller respectively, and the rear portion of described rotor is rotatably suspended in described stator.
Pass through in described shell, arrange multiple described compression chamber according to the cantilever multistage compressor of the embodiment of the present invention, and be provided with rotatable described impeller in each described compression chamber, the compression member of described cantilever multistage compressor can be made like this to be multistage compression, thus can the flowing velocity of mitigation of gases when compressing to reduce flow losses, thus significantly can improve the cycle efficiency of described cantilever multistage compressor.And, the front portion of described rotor rotatably supports on the housing and the rear portion of described rotor is rotatably suspended in described stator, the described rotor of described motor can be made thus to form cantilever structure, so not only can simplify the structure of described motor, and the assembling of described cantilever multistage compressor can be made convenient, thus significantly can reduce the cost of production of described cantilever multistage compressor.Therefore, have that cycle efficiency is high according to the cantilever multistage compressor of the embodiment of the present invention, structure be simple, assembling easily, low cost and other advantages.
In addition, cantilever multistage compressor according to the present invention also has following additional technical feature:
According to one embodiment of present invention, multiple described compression chamber comprises the first compression chamber and is positioned at second compression chamber at described first compression chamber rear, multiple described impeller comprises the first impeller and the second impeller, described first impeller is rotatably located in described first compression chamber, described second impeller is rotatably located in described second compression chamber, have the first air channel in described first impeller, have the second air channel in described second impeller, described first air channel is communicated with described second air channel.The cost of production of described cantilever multistage compressor can be reduced thus further.
According to one embodiment of present invention, described shell comprises: entry guide vane housing, and described import is located at the front end of described entry guide vane housing; Volute body, the front end of described volute body is connected with the rear end of described entry guide vane housing, and described outlet is located on described volute body; And support housing, the front end of described support housing is connected with the rear end of described volute body, and described motor is located at the rear end of described support housing and the front portion of described rotor is rotatably supported on described support housing; And dividing plate, described dividing plate is connected with described volute body with described entry guide vane housing respectively, and described entry guide vane housing and described dividing plate limit described first compression chamber, and described support housing, described volute body and described dividing plate limit described second receiving cavity.So not only can strengthen the bulk strength of described shell, reduce leakage face, and the efficiency of assembling of described cantilever multistage compressor can be improved, the Economy of described cantilever multistage compressor can be improved in addition.
According to one embodiment of present invention, described cantilever multistage compressor also comprises return channel, and described return channel is located on described dividing plate, and described first air channel is communicated with described second air channel by described return channel.Like this can so that described first air channel be communicated with described second air channel the performance improving described cantilever multistage compressor.
According to one embodiment of present invention, described cantilever multistage compressor also comprises Diffuser, and described Diffuser is located in described second compression chamber and the diffusion chamber limited in described second compression chamber respectively with described second air channel and described outlet.The performance of described cantilever multistage compressor can be improved thus further.
According to one embodiment of present invention, described cantilever multistage compressor also comprises speed change assembly and transmission shaft, described speed change assembly to be located in described second compression chamber and to be connected with described rotor, the rear portion of described transmission shaft is connected with described speed change assembly and described first compression chamber is stretched in front portion, and described first impeller and described second impeller are located on described transmission shaft so that described transmission shaft drives described first impeller and described second vane rotary.Described motor not only can be made thus to drive described first impeller and described second impeller more easily, and structure is simple, enforcement is easy.
According to one embodiment of present invention, described speed change assembly comprises driving gear and driven gear, described driving gear and described rotor connection for transmission, described driven gear is connected with described transmission shaft, and described driving gear engages with described driven gear and drives described transmission shaft to rotate by described driven gear.Can realize the gear function of described speed change assembly thus, and the structure of described speed change assembly is simple, cooperation is reliable.
According to one embodiment of present invention, described driven gear and described transmission shaft are integrally formed.。So not only can strengthen the join strength of described driven gear and described transmission shaft, and the quantity that can reduce part is further to improve efficiency of assembling further.
According to one embodiment of present invention, described cantilever multistage compressor also comprises abutment sleeve, described first impeller is connected with described transmission shaft bond, described second impeller is connected with described transmission shaft bond, described abutment sleeve is set on described transmission shaft, and the front end of described abutment sleeve is connected with described first impeller and rear end is connected with described second impeller.The relative position of described first impeller and described second impeller can be made so more stable.
According to one embodiment of present invention, described support housing is provided with rotor supports portion and transmission shaft supporting portion, and the front portion of described rotor is rotatably supported in described rotor supports portion, and described transmission shaft is rotatably supported on described transmission shaft supporting portion.So not only can improve the precision and stability of transmission, and the operating vibration of described cantilever multistage compressor and noise can be reduced, thus the performance of described cantilever multistage compressor can be made more reliable.
According to one embodiment of present invention, described cantilever multistage compressor also comprises rotor front bearing, transmission shaft fore bearing and transmission shaft rear bearing, described rotor front bearing to be set on described rotor and to be arranged on the front end in described rotor supports portion, described transmission shaft fore bearing to be set on described transmission shaft and to be arranged on the front end of described transmission shaft supporting portion, and described transmission shaft rear bearing to be set on described transmission shaft and to be arranged on the rear end of described transmission shaft supporting portion.The stability of described rotor and described transmission shaft can be improved so further to improve the reliability of the performance of described cantilever multistage compressor further.
According to one embodiment of present invention, described cantilever multistage compressor also comprises rotor thrust bearing and transmission shaft thrust bearing, described rotor is provided with boss, described rotor thrust bearing to be set on described rotor and to be connected with the front surface of described boss, described rotor thrust bearing is arranged on the rear end in described rotor supports portion, and described transmission shaft thrust bearing to be arranged on described support housing and to be connected with the rear end of described transmission shaft.Further can improve the stability of described transmission shaft and described rotor thus, thus further can improve the reliability of the performance of described cantilever multistage compressor.
According to one embodiment of present invention, shoe cream room and the oil duct be communicated with described second compression chamber with described first compression chamber by described shoe cream room is provided with in described support housing.The manufacture of described cantilever multistage compressor so not only can be made to be more prone to, and the lubricant oil in described shoe cream room can be facilitated by described oil duct, is transported to key position efficiently,
According to one embodiment of present invention, described cantilever multistage compressor also comprises the oil pump for the lubricant oil in described shoe cream room being delivered to described first compression chamber and described second compression chamber, and described oil pump is located on described support housing.The transfer efficiency of lubricant oil can be improved thus.
According to one embodiment of present invention, described cantilever multistage compressor also comprises for the heater to the lubricant oil heating in described shoe cream room, and described heater to be located on described oil pump and to be positioned at described shoe cream room.The lubrication effect of lubricant oil can be improved thus.
According to one embodiment of present invention, described cantilever multistage compressor also comprises seal ring, and described seal ring to be set on described rotor and to be arranged on the rear end in described rotor supports portion.Can ensure that lubricant oil can recycle like this.
According to one embodiment of present invention, described cantilever multistage compressor also comprises motor casing, have receiving cavity in described motor casing, the front end of described motor casing is connected with the rear end of described support housing, and a part and the described stator of described rotor are located in described receiving cavity.Not only can so that described motor to be arranged on the rear end of described support housing, and described motor casing can be utilized to protect described rotor and described stator thus.
According to one embodiment of present invention, described cantilever multistage compressor also comprises Liquid injection cooling assembly, described Liquid injection cooling assembly is located in described receiving cavity, the rear end of described Liquid injection cooling assembly is arranged on the rear wall of described receiving cavity, and the front end of described Liquid injection cooling assembly is towards the rear end of described rotor.The temperature of described rotor and described stator can be prevented thus too high, and the position of described Liquid injection cooling assembly is reasonable, can simplify the structure of described motor casing like this to reduce the cost of production of described motor casing.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the sectional view of the cantilever multistage compressor according to the embodiment of the present invention.
Cantilever multistage compressor 1, entry guide vane housing 110, import 111, first compression chamber 112, volute body 120, outlet 121, second compression chamber 122, support housing 130, shoe cream room 131, dividing plate 140, first impeller 200, second impeller 300, stator 410, rotor 420, boss 421, motor casing 430, receiving cavity 431, return channel 500, Diffuser 600, diffusion chamber 610, driving gear 710, driven gear 720, transmission shaft 800, abutment sleeve 900, rotor front bearing 1000, transmission shaft fore bearing 1100, transmission shaft rear bearing 1200, rotor thrust bearing 1300, transmission shaft thrust bearing 1400, oil pump 1500, heater 1600, seal ring 1700, Liquid injection cooling assembly 1800.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Below with reference to Fig. 1, the cantilever multistage compressor 1 according to the embodiment of the present invention is described.As shown in Figure 1, shell, multiple impeller and motor is comprised according to the cantilever multistage compressor 1 of the embodiment of the present invention.
Have multiple compression chamber in described shell, described shell is provided with and will is arranged in an import be in communication with the outside 111 of forefront in multiple described compression chamber and multiple described compression chamber is positioned at an outlet be in communication with the outside 121 of rearmost.Respectively accordingly and be rotatably located in multiple described compression chamber, have air channel in each described impeller, the described air channel of multiple described impeller is interconnected multiple described impeller.Gas is from after import 111 enters multiple described compression chamber one that is positioned at forefront, compressed through multiple described impeller successively by the air channel of multiple described impeller, finally enter in multiple described compression chamber and be positioned at of rearmost and flowed out by outlet 121.Described motor is established on the housing, described motor comprises stator 410 and rotor 420, the front portion of rotor 420 rotatably supports on the housing and rotor 420 is connected so that described motor drives multiple described vane rotary (fore-and-aft direction is as shown in the arrow A in Fig. 1) with multiple described impeller respectively, and the rear portion of rotor 420 is rotatably suspended in stator 410.In other words, the front support of rotor 420 on the housing and the rear portion of rotor 420 be suspended in stator 410 to form cantilever structure.
Cantilever multistage compressor 1 according to the embodiment of the present invention passes through in described shell, arrange multiple described compression chamber, and be provided with rotatable described impeller in each described compression chamber, the compression member of cantilever multistage compressor 1 can be made like this to be multistage compression, thus can the flowing velocity of mitigation of gases when compressing to reduce flow losses, thus significantly can improve the cycle efficiency of cantilever multistage compressor 1.And, the front portion of rotor 420 rotatably supports on the housing and the rear portion of rotor 420 is rotatably suspended in stator 410, the rotor 420 of described motor can be made thus to form cantilever structure, so not only can simplify the structure of described motor, and the assembling of cantilever multistage compressor 1 can be made convenient, thus significantly can reduce the cost of production of cantilever multistage compressor 1.Therefore, have that cycle efficiency is high according to the cantilever multistage compressor 1 of the embodiment of the present invention, structure be simple, assembling easily, low cost and other advantages.
Fig. 1 shows the cantilever multistage compressor 1 according to the present invention's specific embodiment.As shown in Figure 1, multiple described compression chamber can comprise the first compression chamber 112 and be positioned at second compression chamber 122 at the first compression chamber 112 rear, multiple described impeller can comprise the first impeller 200 and the second impeller 300, first impeller 200 can rotatably be located in the first compression chamber 112, second impeller 300 can rotatably be located in the second compression chamber 122, the first air channel can be had in first impeller 200, can have the second air channel in second impeller 300, described first air channel can be communicated with described second air channel.Cantilever multistage compressor 1 can be made like this for bipolar cantilever multistage compressor.That is, the structure of cantilever multistage compressor 1 can be simplified when guarantee cantilever multistage compressor 1 has higher cycle efficiency further, thus the cost of production of cantilever multistage compressor 1 can be reduced further.
Alternatively, as shown in Figure 1, described shell can comprise entry guide vane housing 110, volute body 120 and support housing 130.Import 111 can be located at the front end of entry guide vane housing 110.The front end of volute body 120 can be connected with the rear end of entry guide vane housing 110, and outlet 121 can be located on volute body 120.The front end of support housing 130 can be connected with the rear end of volute body 120, and described motor can be located at the rear end of support housing 130 and the front portion of rotor 420 can rotatably be supported on support housing 130.Dividing plate 140 can be connected with volute body 120 with entry guide vane housing 110 respectively, and entry guide vane housing 110 and dividing plate 140 can limit the first compression chamber 112, and support housing 130, volute body 120 and dividing plate 140 can limit the second compression chamber 122.In other words, entry guide vane housing 110, volute body 120 are connected successively with support housing 130 and limit cavity, and dividing plate 140 to be located in described cavity and described cavity to be divided into the first compression chamber 112 and the second compression chamber 122 to ensure to be positioned at the stable and reliable for performance of the second impeller 300 of the second compression chamber 122.
The intermediate system drive part of existing compressor case, gear-box and transmission support part are separated, need in assembly process to carry out repeatedly assembling and positioning centering, so not only affect efficiency of assembling, and join strength and sealing all undesirable, in addition the machining allowance of part and weight larger, cause the volume and weight of existing compressor all comparatively large, Economy is poor.
Cantilever multistage compressor 1 is by arranging entry guide vane housing 110, volute body 120 and support housing 130 and dividing plate 140 forms described shell, the structure of described shell can be optimized, reduce the quantity of part, so not only can strengthen the bulk strength of described shell, reduce leakage face, and the efficiency of assembling of cantilever multistage compressor 1 can be improved, the overall volume of described shell and weight can be reduced in addition to improve the Economy of cantilever multistage compressor 1.
Particularly, as shown in Figure 1, cantilever multistage compressor 1 can also comprise return channel 500, and return channel 500 can be located on dividing plate 140, and described first air channel can be communicated with described second air channel by return channel 500.Can utilize return channel 500 can by the second air channel described in the gas channeling in described first air channel by arranging return channel 500, the gas after the first impeller 200 compresses can be made like this to reach the second impeller 300 more easily by described first air channel, return channel 500 and described second air channel successively compress further, namely return channel 500 so that described first air channel is communicated with described second air channel, can improve the performance of cantilever multistage compressor 1 thus.
Further, as shown in Figure 1, cantilever multistage compressor 1 can also comprise Diffuser 600, Diffuser 600 can be located in the second compression chamber 122 and Diffuser 600 can limit in the second compression chamber 122 respectively with described second air channel with export the 121 diffusion chambeies 610 be communicated with.Gas after the second impeller 300 compresses enters diffusion chamber 610 by described second air channel and compresses further, and gas compresses rear outflow diffusion chamber 610 further and flowed out by outlet 121.That is, can compress further gas by arranging Diffuser 600, thus the performance of cantilever multistage compressor 1 can be improved further.
In one embodiment of the invention, as shown in Figure 1, cantilever multistage compressor 1 can also comprise speed change assembly and transmission shaft 800, described speed change assembly can be located in the second compression chamber 122 and described speed change assembly can be connected with rotor 420, the rear portion of transmission shaft 800 can be connected with described speed change assembly and the first compression chamber 112, first impeller 200 can be stretched in the front portion of transmission shaft 800 and the second impeller 300 can be located on transmission shaft 800 so that transmission shaft 800 drives the first impeller 200 and the second impeller 300 to rotate.The rotor 420 of described like this motor can drive the first impeller 200 and the second impeller 300 to rotate by described speed change assembly and transmission shaft 800 successively, described motor not only can be made thus to drive the first impeller 200 and the second impeller 300 more easily, and structure is simple, enforcement is easy.
Specifically, as shown in Figure 1, described speed change assembly can comprise driving gear 710 and driven gear 720, driving gear 710 can with rotor 420 connection for transmission, driven gear 720 can be connected with transmission shaft 800, and driving gear 710 can engage with driven gear 720 and driving gear 710 can drive transmission shaft 800 to rotate by driven gear 720.Can realize the gear function of described speed change assembly thus, and the structure of described speed change assembly is simple, cooperation is reliable.
Wherein, described speed change assembly can be positioned at diffusion chamber 610, and the diameter that the diameter of driving gear 710 can be greater than driven gear 720 has to make described speed change assembly the function that drives up.
Advantageously, driven gear 720 can be integrally formed with transmission shaft 800.So not only can strengthen the join strength of driven gear 720 and transmission shaft 800, and the quantity that can reduce part is further to improve efficiency of assembling further.
Alternatively, as shown in Figure 1, cantilever multistage compressor 1 can also comprise abutment sleeve 900, and the first impeller 200 can be connected by key with transmission shaft 800, second impeller 300 can be connected by key with transmission shaft 800, to ensure that the first impeller 200 and the second impeller 300 can not relative to the circumferential turns of transmission shaft 800.Abutment sleeve 900 can be set on transmission shaft 800, and the front end of abutment sleeve 900 can be connected with the first impeller 200 and the rear end of abutment sleeve 900 can be connected with the second impeller 300.In other words, abutment sleeve 900 in the longitudinal direction can between the first impeller 200 and the second impeller 300 and abutment sleeve 900 can be connected with the second impeller 300 with the first impeller 200 respectively.Abutment sleeve 900 can be utilized like this to limit distance between the first impeller 200 and the second impeller 300, thus the relative position of the first impeller 200 and the second impeller 300 can be made more stable.
In a concrete example of the present invention, support housing 130 can be provided with rotor supports portion and transmission shaft supporting portion, the front portion of rotor 420 can rotatably be supported in described rotor supports portion, and transmission shaft 800 can rotatably be supported on described transmission shaft supporting portion.Specifically, described rotor supports portion can for being formed in the passage on support housing 130, and the front portion of rotor 420 can rotatably be supported in described passage.Described transmission shaft supporting portion can for being formed in the support platform on support housing 130, and transmission shaft 800 can rotatably be supported in described support platform.Wherein, the front end in described rotor supports portion can be positioned at the top of the rear end of described transmission shaft supporting portion.By arranging described rotor supports portion and described transmission shaft supporting portion on support housing 130, the position of rotor 420 and transmission shaft 800 can be made more stable, so not only can improve the precision and stability of transmission, and the operating vibration of cantilever multistage compressor 1 and noise can be reduced, thus the performance of cantilever multistage compressor 1 can be made more reliable.
Advantageously, as shown in Figure 1, cantilever multistage compressor 1 can also comprise rotor front bearing 1000, transmission shaft fore bearing 1100 and transmission shaft rear bearing 1200, rotor front bearing 1000 can be set on rotor 420 and rotor front bearing 1000 can be arranged on the front end in described rotor supports portion, transmission shaft fore bearing 1100 can be set on transmission shaft 800 and transmission shaft fore bearing 1100 can be arranged on the front end of described transmission shaft supporting portion, transmission shaft rear bearing 1200 can be set on transmission shaft 800 and transmission shaft rear bearing 1200 can be arranged on the rear end of described transmission shaft supporting portion.Rotor front bearing 1000 can be utilized thus to be rotatably installed in the front portion of rotor 420 in described rotor supports portion, and transmission shaft fore bearing 1100 and transmission shaft rear bearing 1200 can be utilized to be rotatably installed in by transmission shaft 800 on described transmission shaft supporting portion, the stability of rotor 420 and transmission shaft 800 can be improved so further to improve the reliability of the performance of cantilever multistage compressor 1 further.In addition, the mounting point of rotor front bearing 1000 in described rotor supports portion and transmission shaft fore bearing 1100 and the mounting point of transmission shaft rear bearing 1200 on described transmission shaft supporting portion, higher precision can be ensured by machining, namely can ensure that there is higher concentricity, the precision and stability of transmission can be improved so further, and vibrations when cantilever multistage compressor 1 runs can be reduced further.
More advantageously, as shown in Figure 1, cantilever multistage compressor 1 can also comprise rotor thrust bearing 1300 and transmission shaft thrust bearing 1400, rotor 420 can be provided with boss 421, rotor thrust bearing 1300 can be set on rotor 420 and rotor thrust bearing 1300 can be connected with the front surface of boss 421, rotor thrust bearing 1300 can be arranged on the rear end in described rotor supports portion, and transmission shaft thrust bearing 1400 can be arranged on support housing 130 and transmission shaft thrust bearing 1400 can be connected with the rear end of transmission shaft 800.By arranging rotor thrust bearing 1300, rotor thrust bearing 1300 pairs of rotors 420 can be utilized to carry out spacing in case spline 420 axial floats.By arranging transmission shaft thrust bearing 1400, that transmission shaft thrust bearing 1400 pairs of transmission shafts 800 can be utilized to carry out is spacing to prevent transmission shaft 800 axial float.Further can improve the stability of transmission shaft 800 and rotor 420 thus, thus further can improve the reliability of the performance of cantilever multistage compressor 1.
Fig. 1 shows cantilever multistage compressor 1 according to an embodiment of the invention.As shown in Figure 1, shoe cream room 131 and the oil duct be communicated with the second compression chamber 122 with the first compression chamber 112 by shoe cream room 131 can be provided with in support housing 130.By arranging shoe cream room 131 and described oil duct in support housing 130, the structure that not only can simplify cantilever multistage compressor 1 is further more prone to make the manufacture of cantilever multistage compressor 1, and the lubricant oil in shoe cream room 131 can be facilitated by described oil duct, is transported to key position efficiently, the places such as such as rotor front bearing 1000, transmission shaft fore bearing 1100, transmission shaft rear bearing 1200, rotor thrust bearing 1300 and transmission shaft thrust bearing 1400.The reliability of cantilever multistage compressor 1 can be ensured thus,
Alternatively, as shown in Figure 1, cantilever multistage compressor 1 can also comprise the oil pump 1500 for the lubricant oil in shoe cream room 131 being delivered to the first compression chamber 112 and the second compression chamber 122, and oil pump 1500 can be located on support housing 130.Flow to the speed of the first compression chamber 112 and the second compression chamber 122 by arranging oil pump 1500 lubricant oil can accelerated in shoe cream room 131, thus the transfer efficiency of lubricant oil can be improved.
Advantageously, as shown in Figure 1, cantilever multistage compressor 1 can also comprise for the heater 1600 to the lubricant oil heating in shoe cream room 131, and heater 1600 can be located on oil pump 1500 and heater 1600 can be positioned at shoe cream room 131.Particularly, heater 1600 can together run with oil pump 1500 and stop, and when namely oil pump 1500 runs, heater 1600 starts, and when oil pump 1500 stops, heater 1600 also stops.Utilize heater 1600 lubricant oil heated in shoe cream room 131 can improve the lubrication effect of lubricant oil.
As shown in Figure 1, cantilever multistage compressor 1 can also comprise seal ring 1700, and seal ring 1700 can be set on rotor 420 and seal ring 1700 can be arranged on the rear end in described rotor supports portion.Rotor thrust bearing 1300 can be positioned at the front of seal ring 1700.By arranging seal ring 1700, seal ring 1700 can be utilized to seal gap between support housing 130 and described motor, can prevent lubricant oil from flowing in described motor like this, thus can ensure that the lubricant oil flowed out from shoe cream room 131 can flow back to shoe cream room 131 by described oil duct, recycle to enable lubricant oil.
Fig. 1 shows the cantilever multistage compressor 1 according to the present invention's concrete example.As shown in Figure 1, cantilever multistage compressor 1 can also comprise motor casing 430, can have receiving cavity 431 in motor casing 430, the front end of motor casing 430 can be connected with the rear end of support housing 130, and a part and the stator 410 of rotor 420 can be located in receiving cavity 431.Not only can so that described motor to be arranged on the rear end of support housing 130, and motor casing 430 can be utilized to protect rotor 420 and stator 410 thus.
Alternatively, as shown in Figure 1, cantilever multistage compressor 1 can also comprise Liquid injection cooling assembly 1800, Liquid injection cooling assembly 1800 can be located in receiving cavity 431, the rear end of Liquid injection cooling assembly 1800 can be arranged on the rear wall of receiving cavity 431, namely the rear end of Liquid injection cooling assembly 1800 can be arranged on motor casing 430, and the front end of Liquid injection cooling assembly 1800 can towards the rear end of rotor 420.Liquid injection cooling assembly 1800 can be utilized thus to spray cooling liquid in case the temperature of spline 420 and stator 410 is too high to rotor 420, and the position of Liquid injection cooling assembly 1800 is reasonable, can simplify the structure of motor casing 430 like this to reduce the cost of production of motor casing 430.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (18)
1. a cantilever multistage compressor, is characterized in that, comprising:
Shell, has multiple compression chamber in described shell, and described shell is provided with and will is arranged in an import be in communication with the outside of forefront in multiple described compression chamber and multiple described compression chamber is positioned at an outlet be in communication with the outside of rearmost;
Multiple impeller, respectively accordingly and be rotatably located in multiple described compression chamber, have air channel in each described impeller, the described air channel of multiple described impeller is interconnected multiple described impeller; With
Motor, described motor is established on the housing, described motor comprises stators and rotators, the front portion of described rotor rotatably supports on the housing and is connected so that described motor drives multiple described vane rotary with multiple described impeller respectively, and the rear portion of described rotor is rotatably suspended in described stator.
2. cantilever multistage compressor according to claim 1, it is characterized in that, multiple described compression chamber comprises the first compression chamber and is positioned at second compression chamber at described first compression chamber rear, multiple described impeller comprises the first impeller and the second impeller, described first impeller is rotatably located in described first compression chamber, described second impeller is rotatably located in described second compression chamber, in described first impeller, there is the first air channel, have the second air channel in described second impeller, described first air channel is communicated with described second air channel.
3. cantilever multistage compressor according to claim 2, is characterized in that, described shell comprises:
Entry guide vane housing, described import is located at the front end of described entry guide vane housing;
Volute body, the front end of described volute body is connected with the rear end of described entry guide vane housing, and described outlet is located on described volute body; With
Support housing, the front end of described support housing is connected with the rear end of described volute body, and described motor is located at the rear end of described support housing and the front portion of described rotor is rotatably supported on described support housing; With
Dividing plate, described dividing plate is connected with described volute body with described entry guide vane housing respectively, and described entry guide vane housing and described dividing plate limit described first compression chamber, and described support housing, described volute body and described dividing plate limit described second receiving cavity.
4. cantilever multistage compressor according to claim 3, is characterized in that, also comprise return channel, and described return channel is located on described dividing plate, and described first air channel is communicated with described second air channel by described return channel.
5. cantilever multistage compressor according to claim 3, is characterized in that, also comprise Diffuser, and described Diffuser is located in described second compression chamber and the diffusion chamber limited in described second compression chamber respectively with described second air channel and described outlet.
6. cantilever multistage compressor according to claim 3, it is characterized in that, also comprise speed change assembly and transmission shaft, described speed change assembly to be located in described second compression chamber and to be connected with described rotor, the rear portion of described transmission shaft is connected with described speed change assembly and described first compression chamber is stretched in front portion, and described first impeller and described second impeller are located on described transmission shaft so that described transmission shaft drives described first impeller and described second vane rotary.
7. cantilever multistage compressor according to claim 6, it is characterized in that, described speed change assembly comprises driving gear and driven gear, described driving gear and described rotor connection for transmission, described driven gear is connected with described transmission shaft, and described driving gear engages with described driven gear and drives described transmission shaft to rotate by described driven gear.
8. cantilever multistage compressor according to claim 6, is characterized in that, described driven gear and described transmission shaft are integrally formed.
9. cantilever multistage compressor according to claim 6, it is characterized in that, also comprise abutment sleeve, described first impeller is connected with described transmission shaft bond, described second impeller is connected with described transmission shaft bond, described abutment sleeve is set on described transmission shaft, and the front end of described abutment sleeve is connected with described first impeller and rear end is connected with described second impeller.
10. cantilever multistage compressor according to claim 6, it is characterized in that, described support housing is provided with rotor supports portion and transmission shaft supporting portion, the front portion of described rotor is rotatably supported in described rotor supports portion, and described transmission shaft is rotatably supported on described transmission shaft supporting portion.
11. cantilever multistage compressors according to claim 10, it is characterized in that, also comprise rotor front bearing, transmission shaft fore bearing and transmission shaft rear bearing, described rotor front bearing to be set on described rotor and to be arranged on the front end in described rotor supports portion, described transmission shaft fore bearing to be set on described transmission shaft and to be arranged on the front end of described transmission shaft supporting portion, and described transmission shaft rear bearing to be set on described transmission shaft and to be arranged on the rear end of described transmission shaft supporting portion.
12. cantilever multistage compressors according to claim 10, it is characterized in that, also comprise rotor thrust bearing and transmission shaft thrust bearing, described rotor is provided with boss, described rotor thrust bearing to be set on described rotor and to be connected with the front surface of described boss, described rotor thrust bearing is arranged on the rear end in described rotor supports portion, and described transmission shaft thrust bearing to be arranged on described support housing and to be connected with the rear end of described transmission shaft.
13. cantilever multistage compressors according to claim 10, is characterized in that, are provided with shoe cream room and the oil duct be communicated with described second compression chamber with described first compression chamber by described shoe cream room in described support housing.
14. cantilever multistage compressors according to claim 13, is characterized in that, also comprise the oil pump for the lubricant oil in described shoe cream room being delivered to described first compression chamber and described second compression chamber, described oil pump is located on described support housing.
15. cantilever multistage compressors according to claim 14, is characterized in that, also comprise for the heater to the lubricant oil heating in described shoe cream room, described heater to be located on described oil pump and to be positioned at described shoe cream room.
16. cantilever multistage compressors according to claim 15, is characterized in that, also comprise seal ring, and described seal ring to be set on described rotor and to be arranged on the rear end in described rotor supports portion.
17. cantilever multistage compressors according to claim 3, it is characterized in that, described motor also comprises motor casing, has receiving cavity in described motor casing, the front end of described motor casing is connected with the rear end of described support housing, and a part and the described stator of described rotor are located in described receiving cavity.
18. cantilever multistage compressors according to claim 17, it is characterized in that, also comprise Liquid injection cooling assembly, described Liquid injection cooling assembly is located in described receiving cavity, the rear end of described Liquid injection cooling assembly is arranged on the rear wall of described receiving cavity, and the front end of described Liquid injection cooling assembly is towards the rear end of described rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310244072.6A CN104235031A (en) | 2013-06-19 | 2013-06-19 | Multistage cantilever compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310244072.6A CN104235031A (en) | 2013-06-19 | 2013-06-19 | Multistage cantilever compressor |
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| CN104235031A true CN104235031A (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310244072.6A Pending CN104235031A (en) | 2013-06-19 | 2013-06-19 | Multistage cantilever compressor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895807A (en) * | 2015-06-04 | 2015-09-09 | 重庆美的通用制冷设备有限公司 | Centrifugal compressor |
| CN105351243A (en) * | 2015-11-24 | 2016-02-24 | 重庆美的通用制冷设备有限公司 | Centrifugal compressor |
| CN106655619A (en) * | 2017-02-28 | 2017-05-10 | 唐凌霄 | Active driving unit with centrifuging unit and solid-liquid separation equipment equipped with active driving unit |
| CN109964007A (en) * | 2016-09-13 | 2019-07-02 | 德尔塔汽车运动公司 | The improvement of gas turbine generator or associated improvement |
| JP7436273B2 (en) | 2020-04-13 | 2024-02-21 | 株式会社ミツバ | motor device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104895807A (en) * | 2015-06-04 | 2015-09-09 | 重庆美的通用制冷设备有限公司 | Centrifugal compressor |
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| CN109964007B (en) * | 2016-09-13 | 2021-12-28 | 德尔塔汽车运动公司 | Improvements in or relating to gas turbine generators |
| CN106655619A (en) * | 2017-02-28 | 2017-05-10 | 唐凌霄 | Active driving unit with centrifuging unit and solid-liquid separation equipment equipped with active driving unit |
| JP7436273B2 (en) | 2020-04-13 | 2024-02-21 | 株式会社ミツバ | motor device |
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