CN202691043U

CN202691043U - External work output transmission connecting device of turbo-expander

Info

Publication number: CN202691043U
Application number: CN 201220318926
Authority: CN
Inventors: 黄光宏; 杨仁泓
Original assignee: UNIECO (CHANGSHU) CO Ltd
Current assignee: UNIECO (CHANGSHU) CO Ltd
Priority date: 2012-07-04
Filing date: 2012-07-04
Publication date: 2013-01-23
Anticipated expiration: 2022-07-04

Abstract

The utility model relates to an external work output transmission connecting device of a turbo-expander, and belongs to the technical field of low-temperature equipment. The external work output transmission connecting device comprises a connecting sleeve, a pair of flanges, sealing ring seats and transmission shafts, wherein the connecting sleeve is provided with a sleeve cavity, and a bearing is arranged at each of the left end and the right end of the connecting sleeve; the flanges are respectively fixed at the left end and the right end of the connecting sleeve, and a sealing ring seat cavity is formed in the center of each flange; the sealing ring seats are arranged in each sealing ring seat cavity; and the transmission shafts are supported on the bearings, are matched with the sealing ring seats, and the middle parts of the transmission shafts are positioned in the sleeve cavity. The external work output transmission connecting device is characterized in that a sealing mechanism cavity is formed in the center of each sealing ring seat; a stack ring extends from the center of one side of each sealing ring seat back to the bearings; a snap ring groove is formed on the inner wall of the stack ring and surrounds the circumferential direction of the inner wall of the stark ring; and a transmission shaft random sealing mechanism is arranged in each sealing mechanism cavity. The external work output transmission connecting device has the advantages that resources are saved, the cost is reduced, and the mounting efficiency is improved.

Description

The external work output transmission connecting device of turbo-expander

Technical field

The utility model belongs to the Cryo Equipment technical field, is specifically related to a kind of external work output transmission connecting device of turbo-expander

Background technique

Decompressor is divided into two classes usually by its motion mode and structural type: one is Piston Expander; Two is turbo-expander.Owing to having the characteristics such as flow is large, 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.

As the industry's knowledge of the reason, turbo-expander be during with gas expansion speed can variation and use the machinery of transferring energy, the energy of its transmission also claims external work, external work usually by the equipment that connects that is connected with impeller such as absorptions such as the generator that is not limited to, blower, water pump, pressure-increasing machine, oil brakes, and be aforesaid external work output transmission connecting device between impeller and the transition apparatus that connects between the equipment.In published Chinese patent literature, is no lack of the technical information about turbo-expander, slightly recommend to have with what exemplify that " Miniature turbine expansion engine ", CN2185339Y provide " gas suspended ceramic low-temp. turbine expansion engine ", the CN200955408Y bulletin has " Turbine expansion unit ", CN201367920Y to disclose " turbo-expander " and CN202039906U has recommended " a kind of gas-bearing expansion turbine " such as CN2388351Y, etc.

As is known in the industry, the watt level of turbo-expander is different, what adapt with it is that the specification of aforesaid external work output transmission connecting device is also different, and more particularly, the turbo-expander of different capacity need to be supporting with it by the corresponding diameter of axle of the transmission shaft of external work output transmission connecting device.Yet, can cause a series of Transform Type design troubles that industry does not wish to face but that have in the face of and must dispose after the diameter of axle of transmission shaft changes, so-called a series of Transform Type design troubles for example need to change a pair of flange plate that i.e. redesign is positioned at the coupling sleeve two ends, and (the industry custom claims large flange or a left side, right flange), a pair of for supporting drive shaft cardan-shaft suspension mechanism and be used for transmission shaft is implemented avoiding for the lubricant oil that cardan-shaft suspension mechanism (bearing) is lubricated towards sealing mechanism of transmission the tip of the axis infiltration etc. of sealing.

In above-mentioned factor, the most thorny to flange plate and to the work of the redesign that is arranged at the packing holder in the packing holder chamber that flange plate central authorities offer, because on the one hand easily cause the wasting of resources because abandoning original flange plate and packing holder, the economizing economy spirits of advocating with the present whole society; Increase on the other hand cost; The tediously long efficient that affects of time that spends owing to designing institute on the one hand again.Yet as if at present industry is got used to this disposal pattern and there are no the plan that proposes to be rich in the challenge improvement.Especially all do not disclosing the referential technology enlightenment of being eliminated this unfavorable factor in published state, inside and outside patent and the non-patent literature up to now.For this reason, the applicant has done positive and useful design, has formed technological scheme described below

Summary of the invention

Task of the present utility model is to provide a kind of to be had excellent generalization degree and need not to change the redesign flange plate and change the external work output transmission connecting device that packing holder is used the turbo-expander that economizes on resources, reduces cost and raise the efficiency because of the diameter of axle of transmission shaft.

Task of the present utility model is finished like this, a kind of external work output transmission connecting device of turbo-expander, comprise the coupling sleeve that has the sleeve chamber and respectively be provided with a bearing at left end and right-hand member, be separately fixed at left end and right-hand member and a pair of flange plate respectively have a packing holder chamber at middle position of coupling sleeve, be arranged on the packing holder in each packing holder chamber and two ends are bearing on the bearing rotationally and match with packing holder and the middle part is positioned at the transmission shaft in sleeve chamber, characteristics are: the central authorities of described packing holder consist of the sealing mechanism chamber that the side that a selfsealings ring support is arranged is through to opposite side, and be extended with a stack circle at the accent of sealing ring support back to the central authorities of a side of described bearing around the sealing mechanism chamber, on the inwall of this stack circle and around the circumferencial direction of the inwall of stack circle, offer an annular groove, be equipped with in the sealing mechanism chamber that the diameter of axle with described transmission shaft changes for to the transmission shaft of the end part seal of transmission shaft sealing mechanism at random.

In a specific embodiment of the present utility model, described transmission shaft at random sealing mechanism comprises stuffing box gland, first, the second seal ring and snap ring, stuffing box gland is placed in the described sealing mechanism chamber, and the inwall in the outer wall of stuffing box gland and sealing mechanism chamber consists of sealing, consisting of in a side of the sealing mantle cavity of stuffing box gland has one first sealing ring cavity, and the opposite side formation has one second sealing ring cavity, the first seal ring is arranged in the first sealing ring cavity, the second seal ring is arranged in the second sealing ring cavity, snap ring snaps in the described annular groove, and with the end contact of stuffing box gland, the end of described transmission shaft is sealed and matched with the sealing mantle cavity.

The technological scheme that the utility model provides has following technique effect: when the power of turbo-expander changes and changes the diameter of axle of transmission shaft, as long as change not only that diameter with the end of transmission shaft adapts but with the diameter in sealing mechanism chamber be complementary with the mobility sealing mechanism, thereby need not flange plate and packing holder redesign and replacing, not only help to economize on resources, reduce cost, and can improve installation efficiency.

Description of drawings

Fig. 1 is example structure figure of the present utility model.

Fig. 2 is the sectional view of Fig. 1.

Fig. 3 is application examples schematic representation of the present utility model.

Embodiment

For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present utility model and beneficial effect more, the claimant general elaborates in embodiment's mode below, but all be not restriction to the utility model scheme to embodiment's description, any according to the utility model design done only for pro forma but not substantial equivalent transformation all should be considered as the technical solution of the utility model category.

Embodiment:

See also Fig. 1 and Fig. 2, provided a coupling sleeve 1, the two ends of this coupling sleeve 1 are that left and right end respectively is provided with a fastening flange circle 13 to extending out, and offer one group of flange plate fixed hole 131 with the interval state on each fastening flange circle 13.At the two ends of coupling sleeve 1 and separately the position near corresponding fastening flange circle 13 offers an inlet hole 14, preferred scheme be with a pair of inlet hole 14 be opened in coupling sleeve 1 under the use state 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 pressurized air to introduce by the road inlet hole 14, each inlet hole 14 have one be used for pressure air towards below the direction of the packing holder 3 that also will describe draw the air entraining passage 141 that send, that is to say that air entraining passage 141 extends towards the direction of packing holder 3.Again, on the coupling sleeve 1 and under the use state towards under the two ends at position respectively offer a return-air hole 15, each return-air hole 15 has a return-air road 151(who extends towards the direction of packing holder 3 equally specifically can be referring to Fig. 2).And, the two ends of coupling sleeve 1 and preferably under the use state towards on a side offer an oil inlet hole 16, oil inlet hole 16 has an oil input channel 161 that extends towards the direction of bearing 12, 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 the coupling sleeve 1 use state towards under a side offer one and be used for entering into the spill port 18 that lubricant oil sleeve chamber 11 in causes the fuel tank of outside by the road.By shown in Figure 1, aforesaid bearing 12 adopts bearing set screw 121 to be fixed in the bearing bore at coupling sleeve 1 two ends.

A pair of flange plate 2 is respectively fixing with the flange plate fixed hole 131 of the fastening flange circle 13 of aforesaid coupling sleeve 1 by one group of flange plate set screw 22, consisting of at the central position of flange plate 2 has a 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 showing with spiral case 7(Fig. 3 of decompressor) fixing flange plate fixed hole 23.

Please continue to see Fig. 1 and Fig. 2, because it is identical being arranged on the structure of the packing holder 3 in the packing holder chamber 21 of packing holder 3 and the flange plate 23 that is arranged on the right in the packing holder chamber 21 of flange plate 2 on the left side, so the claimant only describes in detail for the packing holders 3 in the packing holder chamber 21 that is arranged at the left side below.

Screw hole default on packing holder 3 usefulness packing holder set screws 33 and the aforesaid coupling sleeve 1 is fixed, a side that offers selfsealings ring support 3 in the central authorities of sealing ring support 3 is through to the sealing mechanism chamber 31 of opposite side, consisting of back to a side of aforesaid bearing 12 and around the circumferencial direction in sealing mechanism chamber 31 at packing holder 3 has a stack circle 32 that is projected on the surface of packing holder 3, and offers an annular groove 321 at the inwall of stack circle 32.Shown in figure, on packing holder 3, also offer the packing holder intake duct 34 that communicates with aforesaid air entraining passage 141, and offer the packing holder air outlet channel 35 that communicates with aforesaid return-air road 151.Be provided with one group of seal ring 36 that is used for consisting of with the chamber wall in packing holder chamber 21 sealing at the edge of packing holder 3.

Match with bearing 12 and packing holder 3 in the same manner in the two ends of transmission shaft 4, and each formation has a disc 41 at the two ends of transmission shaft 4.

Please see Fig. 2 by emphasis, the two ends of transmission shaft 4 are respectively passed aforesaid bearing 12 and packing holder 3 and are leant out outside the packing holder 3, the bearing housing that is positioned at disc 41 1 sides of transmission shaft 4 cooperates a section 42(Fig. 1 to show) cooperates with bearing 12, and the stuffing box gland cooperation sections 43 that is positioned at disc 41 opposite sides matches with packing holder 3.Between bearing 12 and packing holder 3 and in the position corresponding to disc 41, consist of an oil clearance 6 is arranged.The slot of lubricant oil between bearing 12 and transmission shaft 4 that enters in the bearing 12 enters oil clearance 6, the lubricant oil that enters into oil clearance 6 is introduced sleeve chamber 11 through drawing oilhole 17, and then introduced in the fuel tank by the pipeline that connects with spill port 18, specifically can be labeled in referring to the claimant arrow of the flow direction of the expression lubricant oil among Fig. 2.

Please see Fig. 1 by emphasis, the main points of the technological scheme that provides as the utility model: in the sealing mechanism chamber 31 of aforesaid a pair of packing holder 3, respectively be provided with at random sealing mechanism 5 of a transmission shaft, preferably but not the transmission shaft that definitely is limited at random sealing mechanism 5 comprise stuffing box gland 51, first, the second seal ring 52,53 and snap ring 54, stuffing box gland 51 is placed in the aforesaid sealing mechanism chamber 31, the inwall in the outer wall of stuffing box gland 51 and sealing mechanism chamber 31 forms sealing, in the sealing mantle cavity 511 of stuffing box gland 51, offer pore 5113, this pore 5113 communicates with air drain 512 on the outer wall that is formed in stuffing box gland 51, and air drain 512 communicates with aforesaid packing holder intake duct 34 and seal ring air outlet channel 35.Side formation at sealing mantle cavity 511 has one first sealing ring cavity 5111, and the opposite side formation has one second sealing ring cavity 5112, the first seal ring 52 is located in the first sealing ring cavity 5111, the second seal ring 53 is located in the second sealing ring cavity 5112, snap ring 54 snap in the aforesaid annular groove 321 and with the end contact of stuffing box gland 51.Each is sealed and matched the two ends of aforesaid transmission shaft 4 with sealing mantle cavity 511 after passing bearing 12.

When the power of turbo-expander changes, the diameter of axle of transmission shaft 4 is corresponding changing also, namely the turbo-expander of different capacity has the transmission shaft 4 from the matched different diameters of axle of its impeller, so the external work output transmission connecting device of the turbo-expander that provides of the utility model has the adaptability that the diameter of axle of good reply transmission shaft 4 changes.For example when the diameter of axle of transmission shaft 4 changes, as long as conversion stuffing box gland 51, the first seal ring 52 and the second seal ring 53.Particularly, enable not only adaptive with transmission shaft 4 but also just can ensure fiting effect with stuffing box gland 51 that the sealing mechanism chamber 31 of packing holder 3 matches and need not to resemble and change flange plate 2 and packing holder 3 the prior art.

Still see Fig. 2, because aforesaid seal ring intake duct 34 communicates with intake duct 141, again since seal ring intake duct 34 corresponding to aforesaid air drain 512, namely communicate with air drain 512, also owing to air drain 512 communicates with sealing mantle cavity 512, therefore under the pressure-acting of air-flow, pressure air can be divided into two-way, one the tunnel plays the lubricant oil that stops in the aforesaid oil clearance 6 permeates towards the direction that deviates from oil clearance 6, that is to say to force lubricant oil to flow and avoid lubricant oil to ooze towards the end of transmission shaft 4 and let out to the direction of oil clearance 6, another road air-flow stops the bearing 12 of the gas invasion and attack bearing 12(left end that comes from decompressor).Redundant pressure air is drawn through packing holder air outlet channel 35.With regard to right-hand member, be divided into wherein a tunnel playing equally and stop lubricant oil towards the effect of the direction infiltration that deviates from oil clearance 6 in the air-flow of two-way, and another road is played and is prevented that outside steam from invading the effect (bearing 12 of right-hand member) of bearing 12.

Application examples:

See also Fig. 3, during use one group of bolt 231 of a flange plate 2 usefulness on the left side in the aforesaid a pair of flange plate 2 of the present utility model is fixedly connected with at the spiral case 7 corresponding to the turbo-expander of aforesaid left flange plate fixed hole 23, and the left end of transmission shaft 4 is connected with the impeller of turbo-expander, the other end of transmission shaft 4 is connected with the aforesaid equipment 8 that connects, the claimant need to prove, although what the equipment that connects was illustrated in Fig. 3 is blower, but also can be pressure-increasing machine, water pump or oil brake, etc.

Claims

1. A kind of external work output transmission connecting device of turbo-expander, comprise the coupling sleeve (1) that has sleeve chamber (11) and respectively be provided with a bearing (12) at left end and right-hand member, be separately fixed at left end and right-hand member and a pair of flange plate (2) respectively have a packing holder chamber (21) at middle position of coupling sleeve (1), be arranged on that packing holder (3) in each packing holder chamber (21) and two ends are bearing in rotationally that bearing (12) is gone up and match with packing holder (3) and the middle part is positioned at the transmission shaft (4) of sleeve chamber (11), it is characterized in that: the central authorities of described packing holder (3) consist of the sealing mechanism chamber (31) that the side that a selfsealings ring support (3) is arranged is through to opposite side, and be extended with a stack circle (32) at the accent of sealing ring support (3) back to the central authorities of a side of described bearing (12) around sealing mechanism chamber (31), on the inwall of this stack circle (32) and around the circumferencial direction of the inwall of stack circle (32), offer an annular groove (321), be equipped with in sealing mechanism chamber (31) that the diameter of axle with described transmission shaft (4) changes for to the transmission shaft of the end part seal of transmission shaft (4) sealing mechanism (5) at random.

2. The external work output transmission connecting device of turbo-expander according to claim 1, it is characterized in that described transmission shaft at random sealing mechanism (5) comprise stuffing box gland (51), first, the second seal ring (52,53) and snap ring (54), stuffing box gland (51) is placed in the described sealing mechanism chamber (31), and the inwall of the outer wall of stuffing box gland (51) and sealing mechanism chamber (31) consists of sealing, consisting of in a side of the sealing mantle cavity (511) of stuffing box gland (51) has one first sealing ring cavity (5111), and the opposite side formation has one second sealing ring cavity (5112), the first seal ring (52) is arranged in the first sealing ring cavity (5111), the second seal ring (53) is arranged in the second sealing ring cavity (5112), snap ring (54) snaps in the described annular groove (321), and with the end contact of stuffing box gland (51), the end of described transmission shaft (4) is sealed and matched with sealing mantle cavity (511)