CN102767402A - Connecting shaft structure of external work output connection device of turbine expansion engine - Google Patents
Connecting shaft structure of external work output connection device of turbine expansion engine Download PDFInfo
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- CN102767402A CN102767402A CN2012102278582A CN201210227858A CN102767402A CN 102767402 A CN102767402 A CN 102767402A CN 2012102278582 A CN2012102278582 A CN 2012102278582A CN 201210227858 A CN201210227858 A CN 201210227858A CN 102767402 A CN102767402 A CN 102767402A
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Abstract
The invention belongs to the technical field of low-temperature equipment, and discloses a connecting shaft structure of an external work output connection device of a turbine expansion engine. The external work output connection device of the turbine expansion engine includes a connecting sleeve, which provided with a sleeve cavity and of which connecting shaft support mechanism cavities formed at the middle parts at the two ends respectively, a left flange plate, a right flange plate, a pair of connecting shaft support mechanisms, and a pair of seal ring seats. The connecting shaft structure includes a connecting shaft supported on the connecting shaft support mechanisms, wherein air inlets are formed in the connecting sleeve and provided with inlet channels; return-air holes are formed in the connecting sleeve; oil inlet holes are formed at the two ends of the connecting sleeve and provided with oil inlet channels; a return-oil hole is formed on one side of the connecting sleeve; oil gaps are formed between the connecting shaft support mechanisms and the seal ring seats; and the two ends of the connecting shaft form a seal gasket matching section. The connecting shaft structure is characterized in that an oil slinger is formed on the connecting shaft and forms an oil throwing groove with one end of the bearing sleeve matching section, and has the advantages that the lubrication and sealing effects are integrated.
Description
Technical field
The invention belongs to the Cryo Equipment technical field, be specifically related to a kind of coupling shaft structure of external work output connection set of turbo-expander
Background technique
decompressor is divided into two types usually by its motion mode and structural type: one is Piston Expander; Two is turbo-expander.Owing to having characteristics such as flow is big, simple in structure, volume is little, efficient is high and grow service cycle for Piston Expander, turbo-expander is widely used in the various Cryo Equipments.
such as industry the reason of knowledge; Turbo-expander be when expanding with gas speed can variation and use the machinery that transmits energy; Its energy delivered is also claimed external work, usually through the connected equipment that connects like absorptions such as the generator that is not limited to, blower, water pump, pressure-increasing machine, oil brakes.In disclosed Chinese patent document, is no lack of technical information about turbo-expander; Slightly recommend to have with what give an example that " miniature turbo-expander ", CN2185339Y provide " gas suspension formula pottery cryogenic turboexpander ", the CN200955408Y bulletin has " turbine expansion unit ", CN201367920Y to disclose " turbo-expander " and CN202039906U has recommended " a kind of gas-bearing expansion turbine " like CN2388351Y, or the like.
such as industry knowledge because turbo-expander is at the rotating speed high (more than the 10000n/min) in when operation, therefore must be to taking to seal and lubricated measure of working along both lines as the coupling shaft of external work output connection set.But in the lubricated process of bearing housing to being used for supporting coupling shaft; Tend to occur lubricant oil and following matching gap between coupling shaft and the bearing housing towards being connected the problem that the tip of the axis spreads; With regard to the end that coupling shaft is connected with decompressor, can produce pollution to the air supply system in the air chamber of decompressor from the lubricant oil that the coupling shaft end oozes out; With regard to coupling shaft with connect with regard to the end that the for example aforesaid generator of equipment, blower, water pump, pressure-increasing machine, oil brake etc. are in transmission connection, the lubricant oil that oozes out from the coupling shaft end can pollute the equipment of connecting.And the leakage of lubricant oil also can influence lubrication effect and waste lubricant oil to bearing housing.
for addressing the above problem, and prior art is poured into the stuffing box gland that is arranged in the packing holder and the material of fiting effect between the coupling shaft and stuffing box gland with attention usually, but only facts have proved and can play the effect of getting half the result with twice the effort.
Therefore; How sealing with lubricated between find rational equinoctial point to become that industry is paid close attention to for a long time and expect the technical problem of early settlement; But all be not seen in the teachings that is able to use for reference in disclosed patent and the non-patent literature up to now; The applicant has done time consuming research and trial for this reason, has found the way of dealing with problems finally, and the technological scheme that will introduce below produces under this background
Summary of the invention
task of the present invention is to provide a kind of can stop the coupling shaft structure that is used for the lubricated lubricant oil of the bearing housing that supports coupling shaft is rotationally used the turbo-expander that ensures the sealing that is not mutually exclusive and lubrication effect from the matching gap between coupling shaft and the bearing housing towards being connected the tip of the axis infiltration external work is exported connection set effectively.
task of the present invention is accomplished like this; The coupling shaft structure of a kind of external work of turbo-expander output connection set, the external work output connection set of described turbo-expander comprise having the coupling sleeve that sleeve chamber and the middle position at two ends respectively offer a coupling shaft support mechanism chamber; One is fixed on a left end and left flange plate offer left packing holder chamber at middle position of coupling sleeve; One is fixed on right-hand member and the right flange plate offer right packing holder chamber at middle position of coupling sleeve; A pair of coupling shaft support mechanism, one of them coupling shaft support mechanism are arranged in the said coupling shaft support mechanism chamber of coupling sleeve left end, and another then is arranged in the coupling shaft support mechanism chamber of right-hand member; A pair of packing holder, one of them packing holder are arranged in the described left packing holder chamber, and another then is arranged in the described right packing holder chamber; Described coupling shaft structure comprise two ends be bearing in rotationally on the coupling shaft support mechanism be sealed and matched with packing holder and lean out packing holder and the middle part is positioned at a coupling shaft in sleeve chamber; Wherein: on said coupling sleeve and the two ends that are positioned at coupling sleeve respectively offer an inlet hole; Each inlet hole has the intake duct that extends towards the direction of said packing holder; On coupling sleeve and the two ends that are positioned at coupling sleeve equally respectively offer a return-air hole; Each return-air hole has the return-air road that extends towards the direction of packing holder; The circumferencial direction that advance, return-air hole centers on coupling sleeve each other is separated by 180 °; Two ends at coupling sleeve also respectively offer an oil inlet hole; Each oil inlet hole has the oil input channel that extends towards the direction of said coupling shaft support mechanism; And under the coupling sleeve user mode towards under a side offer the spill port that communicates with the sleeve chamber; Be used for introducing the oil clearance in the sleeve chamber constituting one between described coupling shaft support mechanism and the said packing holder with introduce the lubricant oil that flows out in said coupling shaft support mechanism and the matching gap between coupling shaft support mechanism and the described coupling shaft oilhole that draws on being opened in coupling sleeve by described oil input channel; The two ends of described coupling shaft respectively constitute a diameter and cooperate section and diameter to cooperate the stuffing box gland of the diameter of section to cooperate section less than said bearing housing less than the bearing housing of the diameter at the middle part of coupling shaft; Bearing housing cooperates section and said coupling shaft support mechanism to be rotatably assorted, and stuffing box gland cooperates section and described packing holder to be sealed and matched, and is characterised in that: on described coupling shaft and being positioned at said stuffing box gland, cooperate section to cooperate the endface position of an end of section to constitute towards said bearing housing to be projected on the disc that stuffing box gland cooperates the surface of section; Cooperate towards stuffing box gland in this disc and the said bearing housing section of cooperation to constitute one between the end face of an end of section and get rid of oil groove, it is corresponding with described oil clearance that this gets rid of oil groove.
in a concrete embodiment of the present invention, described disc is the shape of circular cone stage body, and the stub end of this circular cone stage body is towards the described oil groove that gets rid of.
are in another concrete embodiment of the present invention; Described a pair of coupling shaft support mechanism respectively comprises bearing housing, one group of bearing shell, inside and outside block plate and snap ring, and bearing housing is fixed in the described coupling shaft support mechanism chamber, and this bearing housing has a bearing shell mating cavity; In this bearing shell mating cavity and around the circumferencial direction of bearing shell mating cavity, offer the bearing shell supporting foot groove that equates with the quantity of described one group of bearing shell; Respectively offer an oil-feed through hole between the adjacent bearing shell supporting foot groove, each oil-feed through hole communicates with oil groove on being opened in bearing housing, constitutes block plate chamber at bearing housing towards a side of interior block plate; And a side of bearing housing outward block plate constitutes an outer block plate chamber and an annular groove; Annular groove is positioned at the outside in outer block plate chamber, and one group of bearing shell is arranged in the described bearing shell mating cavity, a side of each bearing shell wall towards the chamber of bearing shell mating cavity and along the length direction of bearing shell constitute one be projected on the surface of bearing shell the bearing shell supporting foot; The bearing shell supporting foot matches with described bearing shell supporting foot groove; Maintain the bearing shell space between the adjacent bearing shell, the bearing shell space communicates with described oil-feed through hole, and interior block plate matches with described interior block plate chamber; Outer block plate is arranged in the described outer block plate chamber; The snap ring holding is in annular groove, and externally block plate stops, matches in the bearing shell chamber that the bearing housing of described coupling shaft cooperates section to constitute with being surrounded each other by one group of bearing shell; Described oil input channel communicates with said oil groove, and bearing shell chamber and bearing housing cooperate that formed matching gap communicates with the said oil groove that gets rid of between the surface of section.
are in another concrete embodiment of the present invention; The middle position of described a pair of packing holder and towards a side of said disc respectively be embedded with one with disc paste being used to of touching stop lubricant oil towards the direction infiltration that deviates from described oil clearance and be nested with the oil resistance stuffing box gland on said coupling shaft; Be used to stop extraneous gas to get into said coupling shaft support mechanism and be nested with the choke stuffing box gland on coupling shaft equally and opposite side respectively is embedded with one; On each packing holder, also offer the pressure air that is used for to come from intake duct that communicates with said intake duct and cause the packing holder intake duct in the space between described oil resistance stuffing box gland and the choke stuffing box gland, and respectively offer the packing holder air outlet channel that is used for the pressure air in the space between oil resistance stuffing box gland and the choke stuffing box gland is caused the return-air road that communicates with described return-air road.
are in another concrete embodiment of the present invention; On the sidewall of the circumferencial direction of described packing holder, be arranged with one group of seal ring with the interval state; Wherein: the seal ring and the chamber wall in left packing holder chamber that are positioned on the packing holder in said left packing holder chamber constitute sealing, and the chamber wall formation that is positioned at seal ring and right packing holder chamber on the packing holder in said right packing holder chamber seals.
technological scheme provided by the invention is owing to cooperate section to cooperate the endface position of an end of section to constitute a disc towards bearing housing on coupling shaft and being positioned at stuffing box gland; Therefore under the coupling shaft rotary state, can the lubricant oil that come from the coupling shaft support mechanism be got rid of into getting rid of oil groove; Force lubricant oil to get into the sleeve chamber and lead to external fuel tank through drawing oilhole by spill port from oil clearance; Thereby can stop lubricant oil to infiltrate into the connection the tip of the axis, play the effect lubricated and double gain that sealing is had both ideally towards the direction of packing holder.
Description of drawings
Fig. 1 is the embodiments of the invention structural drawing.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is an application examples schematic representation of the present invention.
Embodiment
can be expressly understood technical spirit of the present invention and beneficial effect more for the auditor that the makes Patent Office especially public; The claimant general elaborates with embodiment's mode below; But the description to embodiment all is not the restriction to the present invention program, any according to the present invention design done only for pro forma but not substantial equivalent transformation all should be regarded as technological scheme category of the present invention.
Embodiment:
see also Fig. 1 and Fig. 2; Provided a coupling sleeve 1 of the external work output connection set of turbo-expander; The two ends of this coupling sleeve 1 are that left and right end respectively is provided with a fastening flange limit 18 to extending out, and on each fastening flange limit 18, offer one group of flange plate fixed hole 181 with the interval state.At the two ends of coupling sleeve 1 and separately the position near corresponding fastening flange limit 18 offers an inlet hole 13; Preferred scheme be with a pair of inlet hole 13 be opened in coupling sleeve 1 under the user mode towards on the two ends of a side; Come from compressed air source unit for example the device of air compressor or suction booster and so on pressure air or claim that pressurized air introduces inlet hole 13 by the road; Each inlet hole 13 have one be used for pressure air towards below the direction of the packing holder 5 that also will describe draw the bleed road 131 that send, that is to say that bleed road 131 extends towards the direction of packing holder 5.Again, on the coupling sleeve 1 and under the user mode towards under the two ends at position respectively offer a return-air hole 14, each return-air hole 14 has one equally towards return-air road 141 that the direction of packing holder 5 is extended (specifically can referring to Fig. 2).And; The two ends of coupling sleeve 1 and preferably under the user mode towards on a side offer an oil inlet hole 15; Oil inlet hole 15 has the oil input channel 151 that extends to the direction of the following coupling shaft support mechanism 4 that also will specify one day; And also respectively offer one at the two ends of coupling sleeve 1 and draw oilhole 17, respectively draw oilhole 17 and communicate with the sleeve chamber 11 of coupling sleeve 1.Also, under coupling sleeve 1 user mode towards under a side offer one and be used for entering into the spill port 16 that lubricant oil in the sleeve chamber 11 causes outside fuel tank by the road.By shown in Figure 1, respectively constitute a coupling shaft support mechanism chamber 12 at the two ends of coupling sleeve 1.
left flange plate 2 is fixing with the flange plate fixed hole 181 on the fastening flange limit 18 of aforesaid coupling sleeve 1 left end through one group of first screw 23 (Fig. 2 shows); Central position at left flange plate 2 constitutes a left packing holder chamber 21, and offers one group in the edge of the circumferencial direction of left flange plate 2 with the interval state and be used for and the fixing left flange plate fixed hole 22 of spiral case 8 (Fig. 3 shows) of decompressor.
are owing to the structure of the coupling shaft support mechanism 4 in the coupling shaft support mechanism chamber 12 of left end that is arranged on coupling sleeve 1 and right-hand member is identical, so the claimant elaborates to a coupling shaft support mechanism 4 in left side shown in Figure 1 below.
above mentioned coupling shaft support mechanism 4 preferably but not the structure that definitely is limited to is following: comprise bearing housing 41, one group of bearing shell 42, inside and outside block plate 43,44 and snap ring 45; Bearing housing 41 is arranged in the coupling shaft support mechanism chamber 12 and with one group of the 3rd screw 416 and first screw hole 121 that is preset on the coupling shaft support mechanism chamber 12 and fixes; This bearing housing 41 has a bearing shell mating cavity 411; On the wall of the chamber of this bearing shell mating cavity 411 and around the circumferencial direction of this chamber wall, offer the bearing shell supporting foot groove 4111 that one group of quantity equates with the quantity of bearing shell 42 with the interval state; Offer an oil-feed through hole 4112 between the adjacent bearing shell supporting foot groove 4111; Each oil-feed through hole 4112 communicates with on the outer wall that is opened in bearing housing 41 and oil groove 412 that ring leads to, and oil groove 412 communicates (Fig. 2 shows) with aforesaid oil input channel 151.The lubricant oil of being introduced by oil inlet hole 15 enters in the whole bearing shell mating cavity 411 behind oil input channel 151, oil groove 412 and oil-feed through hole 4112 successively.Constitute block plate chamber 413 at bearing housing 41 towards a side of interior block plate 43, and a side of bearing housing 41 outward block plates 44 constitutes an outer block plate chamber 414 and offers an annular groove 415, wherein, annular groove 415 is positioned at the outside in outer block plate chamber 414.One group of bearing shell 42 quantity in the present embodiment is four pieces, but is not absolute, therefore can not limit technological scheme provided by the invention with the number of bearing shell 42.Because the quantity of one group of bearing shell 42 has four pieces; Therefore aforesaid bearing shell supporting foot groove 4111 respectively has four with oil-feed through hole 4112; When the state that constitutes a bearing shell chamber 423 to surround each other when one group of bearing shell 42 is positioned at bearing shell mating cavity 411; Each bearing shell 42 is placed in the aforesaid bearing shell supporting foot groove 4111 towards a side of the chamber of bearing shell mating cavity 411 wall and along the bearing shell supporting foot 421 on the surface that is projected on bearing shell 42 that the length direction of bearing shell 42 extends, and the space that keeps between the adjacent bearing shell 42 constitutes bearing shell space 422.Interior block plate 43 be embedded at aforesaid in the block plate chamber 413, with example, outer block plate 44 is placed in the aforesaid outer block plate chamber 414, and snaps in annular groove 415 and external block plate 44 stops by snap ring 45.
Fig. 1 and Fig. 2 please be continued to see in
; Because it is identical being arranged on the structure of the packing holder 5 in packing holder 5 and the right packing holder chamber that is arranged on right flange plate 3 31 in the left packing holder chamber 21 of left flange plate 2, so the claimant only specifies to the packing holders 5 that are arranged in the left packing holder chamber 21 below.
Preset screw hole is fixed on
packing holder 5 usefulness the 4th screw 56 and the aforesaid coupling sleeve 1; Be embedded with an oil resistance stuffing box gland 51 in the central authorities of sealing ring support 5 and towards a side of aforesaid bearing housing 41; And opposite side is embedded with a choke stuffing box gland 52, and on sealing ring support 5, also offers the packing holder air outlet channel 54 that the packing holder intake duct 53 and that communicates with aforesaid intake duct 131 communicates with aforesaid return-air road 141.In addition, be embedded with one group of seal ring 55 that is used for forming with the chamber wall in aforesaid left packing holder chamber 21 sealing in the edge of the circumferencial direction of packing holder 5, seal ring 55 constitutes sealing with the chamber wall in left packing holder chamber 21.
coupling shaft structure provided by the invention is following: comprise a coupling shaft 6; Respectively constituting a bearing housing at the two ends of this coupling shaft 6 cooperates section 62 and one stuffing box gland to cooperate section 63; Bearing housing cooperates the diameter of section 62 littler than the diameter at the middle part of coupling shaft 6; And stuffing box gland cooperates the diameter of section 63 to cooperate the diameter of section 62 little than bearing housing, thereby makes two sections of coupling shaft 6 to form step-like.Wherein: bearing housing cooperates section 62 to match with aforesaid bearing shell chamber 423, and stuffing box gland cooperates sections 63 to match with aforesaid oil resistance stuffing box gland 51 and choke stuffing box gland 52, and the middle part of coupling shaft 6 is positioned at sleeve chamber 11.
maintain a space by shown in Figure 2 between bearing housing 41 and packing holder 5, constitute oil clearance 7 by this space, and oil clearance 7 communicates with sleeve chamber 11 through the aforesaid oilhole 17 that draws.Enter into the slot entering oil clearance 7 of lubricant oil between the bearing housing section of cooperation 62 of bearing shell 42 and coupling shaft 6 in the bearing shell mating cavity 411; The lubricant oil that enters into oil clearance 7 is introduced in the sleeve chamber 11 through the aforesaid oilhole 17 that draws; And then introduce in the fuel tank by the pipeline (oil pipe) that connects with spill port 16, specifically can be labeled in the arrow of the flow direction of the expression lubricant oil among Fig. 2 referring to the claimant.
Fig. 2 is still seen in
; Because aforesaid seal ring intake duct 53 communicates with intake duct 131; Again since seal ring intake duct 53 corresponding between oil resistance stuffing box gland 51 and the choke stuffing box gland 52; Therefore under the pressure effect of air-flow; Pressure air can be respectively be divided into two-way towards the direction of oil resistance, choke stuffing box gland 51,52; One the tunnel plays the lubricant oil that stops in the aforesaid oil clearance 7 towards the direction infiltration that deviates from oil clearance 7, that is to say to force lubricant oil to flow and avoid lubricant oil to let out oozing towards the end of coupling shaft 6 by way of oil resistance stuffing box gland 51 and choke stuffing box gland 52 backs successively to the direction of oil clearance 7, and another road air-flow stops gas invasion and attack coupling shaft support mechanism 4 (the coupling shaft support mechanisms 4 of left end) that come from decompressor.The pressure air of the redundancy of being introduced by seal ring intake duct 53 is drawn through packing holder air outlet channel 54.Be located in oil resistance, the choke stuffing box gland 51,52 on the packing holder 5 that be arranged at of right-hand member; Be divided into wherein a tunnel playing equally and stop the effect of lubricant oil towards the direction infiltration that deviates from oil clearance 7, another road then to be played to prevent outside steam etc. from invading the effect of coupling shaft support mechanism 4 (the coupling shaft support mechanisms 4 of right-hand member) in the air-flow of two-way.
are as the technological points of technological scheme provided by the invention: on coupling shaft 6 and being positioned at aforesaid stuffing box gland, cooperate section 63 to cooperate the endface position of an end of section 62 to constitute one towards bearing housing to be projected on the disc 61 that stuffing box gland cooperates the surface of section 63; This disc 61 constitutes one with the bearing housing section of cooperation 62 and gets rid of oil groove 611 between the end face of an end of stuffing box gland cooperation section 63; Corresponding with aforesaid oil clearance 7, promptly match with oil clearance 7.Aforesaid bearing shell chamber 423 and bearing housing cooperate that formed matching gap communicates with getting rid of oil groove 611 between the surface of section 62, see also arrow shown in Figure 2.
preferably, aforesaid disc 61 is the shape of circular cone stage body, and the stub end of this circular cone stage body is towards getting rid of oil groove 611.Under the high speed rotating of the coupling shaft 6 that the impeller with turbo-expander is in transmission connection; One is formed in disc 61 high speed rotating thereupon on the coupling shaft 6; The lubricant oil of attempt towards the direction infiltration of packing holder 5 is got rid of into getting rid of oil groove 611, get in the sleeve chamber 11 through drawing oilhole 17 by oil clearance 7.Hence one can see that; Be used for bearing housing 41 lubricated promptly bearing shell 42 can not being permeated towards the end that leaning out of coupling shaft 6 hindered airtight big envelope 52 with the bearing housing section of cooperation 62 lubricated lubricant oil; Play the technique effect described in the superincumbent technique effect of the claimant hurdle, and objectively remedied the shortcoming in the prior art.
Application examples:
see also Fig. 3, and the spiral case flange plate 81 of the spiral case 8 of turbo-expander shown in this figure is fixedly connected left flange plate 2 by bolt 221 with spiral case flange plate 81, and the left end of coupling shaft 6 is fixedly connected with impellers in the spiral case 8; , so make up and make the external work of decompressor be able to absorb corresponding to the position of the right flange plate fixed hole 32 of right flange plate 3 is fixedly connected with pressure-increasing machine flange plate 921 as the pressure-increasing machine 92 of the equipment of connecting 9 by the 4th screw 321 by pressure-increasing machine 92 through external work output connection set of the present invention.In the time will pressure-increasing machine 92 being replaced into illustrated generator 91, blower 93 or other similarly machinery is like water pump, oil brake etc., reason be the same so
Claims (5)
1. the coupling shaft structure of the external work of
a kind of turbo-expander output connection set, the external work output connection set of described turbo-expander comprise having the coupling sleeve (1) that sleeve chamber (11) and the middle position at two ends respectively offer a coupling shaft support mechanism chamber (12); One is fixed on a left end and left flange plate (2) offer left packing holder chamber (21) at middle position of coupling sleeve (1); One is fixed on right-hand member and the right flange plate (3) offer right packing holder chamber (31) at middle position of coupling sleeve (1); A pair of coupling shaft support mechanism (4), one of them coupling shaft support mechanism (4) are arranged in the said coupling shaft support mechanism chamber (12) of coupling sleeve (1) left end, and another then is arranged in the coupling shaft support mechanism chamber (12) of right-hand member; A pair of packing holder (5), one of them packing holder (5) are arranged in the described left packing holder chamber (21), and another then is arranged in the described right packing holder chamber (31); Described coupling shaft structure comprise two ends be bearing in rotationally on the coupling shaft support mechanism (4) be sealed and matched with packing holder (5) and lean out packing holder (5) and the middle part is positioned at a coupling shaft (6) in sleeve chamber (11); Wherein: go up and the two ends that are positioned at coupling sleeve (1) respectively offer an inlet hole (13) at said coupling sleeve (1); Each inlet hole (13) has the intake duct (131) that extends towards the direction of said packing holder (5); Go up and the two ends that are positioned at coupling sleeve (1) equally respectively offer a return-air hole (14) at coupling sleeve (1); Each return-air hole (14) has the return-air road (141) that extends towards the direction of packing holder (5); The circumferencial direction that advance, return-air hole (13,14) centers on coupling sleeve (1) each other is separated by 180 °; Two ends at coupling sleeve (1) also respectively offer an oil inlet hole (15); Each oil inlet hole (15) has the oil input channel (151) that extends towards the direction of said coupling shaft support mechanism (4); And under coupling sleeve (1) user mode towards under a side offer the spill port (16) that communicates with sleeve chamber (11); Be used for the lubricant oil of being introduced outflow in said coupling shaft support mechanism (4) and the matching gap between coupling shaft support mechanism (4) and described coupling shaft (6) by described oil input channel (151) is drawn the oil clearance (7) in oilhole (17) the introducing sleeve chamber (11) on being opened in coupling sleeve (1) constituting one between described coupling shaft support mechanism (4) and the said packing holder (5); The two ends of described coupling shaft (6) respectively constitute a diameter and cooperate section (62) and diameter to cooperate the stuffing box gland of the diameter of section (62) to cooperate section (63) less than said bearing housing less than the bearing housing of the diameter at the middle part of coupling shaft (1); Bearing housing cooperates section (62) and said coupling shaft support mechanism (4) to be rotatably assorted; And stuffing box gland cooperates section (63) and described packing holder (5) to be sealed and matched; It is characterized in that: go up and cooperate section (63) to cooperate the endface position of an end of section (62) to constitute to be projected on the disc (61) that stuffing box gland cooperates the surface of section (63) being positioned at said stuffing box gland towards said bearing housing at described coupling shaft (6); This disc (61) and the said bearing housing section of cooperation (62) towards stuffing box gland cooperate section (63) the end face of an end between constitute one and get rid of oil groove (611), it is corresponding with described oil clearance (7) that this gets rid of oil groove (611).
2. the external work of
turbo-expander according to claim 1 is exported the coupling shaft structure of connection set; It is characterized in that described disc (61) is the shape of circular cone stage body, and the stub end of this circular cone stage body is towards the described oil groove (611) that gets rid of.
3. the external work of
turbo-expander according to claim 1 is exported the coupling shaft structure of connection set; It is characterized in that described a pair of coupling shaft support mechanism (4) respectively comprises bearing housing (41), one group of bearing shell (42), inside and outside block plate (43,44) and snap ring (45); Bearing housing (41) is fixed in the described coupling shaft support mechanism chamber (12); This bearing housing (41) has a bearing shell mating cavity (411); In this bearing shell mating cavity (411) and around the circumferencial direction of bearing shell mating cavity (411), offer the bearing shell supporting foot groove (4111) that equates with the quantity of described one group of bearing shell (42); Respectively offer an oil-feed through hole (4112) between the adjacent bearing shell supporting foot groove (4111); Each oil-feed through hole (4112) communicates with oil groove (412) on being opened in bearing housing (41); Constitute block plate chamber (413) in one at bearing housing (41) towards a side of interior block plate (43), and a side of bearing housing (41) outward block plate (44) constitutes an outer block plate chamber (414) and an annular groove (415), annular groove (415) is positioned at the outside in outer block plate chamber (414); One group of bearing shell (42) is arranged in the described bearing shell mating cavity (411); Each bearing shell (42) towards a side of the chamber wall of bearing shell mating cavity (411) and along the length direction of bearing shell (42) constitute one be projected on the surface of bearing shell (42) bearing shell supporting foot (421), bearing shell supporting foot (421) matches with described bearing shell supporting foot groove (4111), maintains bearing shell space (422) between the adjacent bearing shell (42); Bearing shell space (422) communicates with described oil-feed through hole (4112); Interior block plate (43) matches with described interior block plate chamber (413), and outer block plate (44) is arranged in the described outer block plate chamber (414), and snap ring (45) holding is in annular groove (415); Externally block plate (44) stops; Match in the bearing shell chamber (423) that the bearing housing of described coupling shaft (6) cooperates section (62) to constitute with being surrounded each other by one group of bearing shell (42), described oil input channel (151) communicates with said oil groove (412), and formed matching gap communicates with the said oil groove (611) that gets rid of between the surface of bearing shell chamber (423) and bearing housing cooperation section (62).
4. the external work of
turbo-expander according to claim 1 is exported the coupling shaft structure of connection set; It is characterized in that the middle position of described a pair of packing holder (5) and towards a side of said disc (61) respectively be embedded with one with disc (61) paste being used to of touching stop lubricant oil towards the direction infiltration that deviates from described oil clearance (7) and be nested with the oil resistance stuffing box gland (51) on said coupling shaft (6); Be used to stop extraneous gas to get into said coupling shaft support mechanism (4) and be nested with the choke stuffing box gland (52) on coupling shaft (6) equally and opposite side respectively is embedded with one; On each packing holder (5), also offer the pressure air that is used for to come from intake duct (131) that communicates with said intake duct (131) and cause the packing holder intake duct (53) in the space between described oil resistance stuffing box gland (51) and the choke stuffing box gland (52), and respectively offer the packing holder air outlet channel (54) that is used for the pressure air in the space between oil resistance stuffing box gland (51) and the choke stuffing box gland (52) is caused return-air road (141) that communicates with described return-air road (141).
5.
The coupling shaft structure of the external work output connection set of turbo-expander according to claim 1; It is characterized in that on the sidewall of the circumferencial direction of described packing holder (5), being arranged with one group of seal ring (55) with the interval state; Wherein: the chamber wall that is positioned at seal ring (55) and left packing holder chamber (21) on the packing holder (5) in said left packing holder chamber (21) constitutes sealing, and the chamber wall that is positioned at seal ring (55) and right packing holder chamber (31) on the packing holder (5) in said right packing holder chamber (31) forms and seals
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102278582A CN102767402A (en) | 2012-07-04 | 2012-07-04 | Connecting shaft structure of external work output connection device of turbine expansion engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102278582A CN102767402A (en) | 2012-07-04 | 2012-07-04 | Connecting shaft structure of external work output connection device of turbine expansion engine |
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| CN102767402A true CN102767402A (en) | 2012-11-07 |
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| CN2012102278582A Pending CN102767402A (en) | 2012-07-04 | 2012-07-04 | Connecting shaft structure of external work output connection device of turbine expansion engine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133064A (en) * | 2013-03-15 | 2013-06-05 | 联优机械(常熟)有限公司 | Self-sealing-function connecting shaft structure of expansion turbine external work output connection device |
| CN105241179A (en) * | 2015-09-28 | 2016-01-13 | 苏州制氧机股份有限公司 | Oil bearing expansion machine capable of monitoring oil leakage |
| CN106523920A (en) * | 2016-12-01 | 2017-03-22 | 深圳市燃气集团股份有限公司 | Pipe network pressure energy method and device utilizing turbo-expander |
| CN112112689A (en) * | 2020-09-22 | 2020-12-22 | 联优机械(常熟)有限公司 | ORC waste heat power generation turbo expander and high-speed motor matching structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133064A (en) * | 2013-03-15 | 2013-06-05 | 联优机械(常熟)有限公司 | Self-sealing-function connecting shaft structure of expansion turbine external work output connection device |
| CN105241179A (en) * | 2015-09-28 | 2016-01-13 | 苏州制氧机股份有限公司 | Oil bearing expansion machine capable of monitoring oil leakage |
| CN106523920A (en) * | 2016-12-01 | 2017-03-22 | 深圳市燃气集团股份有限公司 | Pipe network pressure energy method and device utilizing turbo-expander |
| CN106523920B (en) * | 2016-12-01 | 2019-04-09 | 深圳市燃气集团股份有限公司 | A kind of pipe network pressure energy method and device using turbo-expander |
| CN112112689A (en) * | 2020-09-22 | 2020-12-22 | 联优机械(常熟)有限公司 | ORC waste heat power generation turbo expander and high-speed motor matching structure |
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Application publication date: 20121107 |