CN209569035U - A kind of air-bearing expanding machine - Google Patents
A kind of air-bearing expanding machine Download PDFInfo
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- CN209569035U CN209569035U CN201920316962.6U CN201920316962U CN209569035U CN 209569035 U CN209569035 U CN 209569035U CN 201920316962 U CN201920316962 U CN 201920316962U CN 209569035 U CN209569035 U CN 209569035U
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Abstract
The utility model discloses a kind of air-bearing expanding machines, including middle machine body, volute of blower and expansion spiral case, the two sides of the middle machine body are separately fixed between volute of blower and expansion spiral case, the cold end of the middle machine body is inserted into the expansion spiral case, the dog point of the middle machine body is inserted into the volute of blower, the inside of the middle machine body is equipped with rotor, the both ends of the rotor have been respectively fixedly connected with left bearing and right bearing, the left bearing is fixed with expansion wheel by cold end labyrinth and the expansion wheel is fixed on one end of the rotor by pin and nut, the right bearing by dog point labyrinth is fixed with impeller of blower and the impeller of blower is fixed on the other end of rotor by pin and with nut, the expansion wheel and impeller of blower are respectively provided in the expansion spiral case and volute of blower.The utility model reduces complete machine leakage point and shortens rotor length using single thrust dish structure, to improve expanding machine operation stability.
Description
Technical field
The utility model relates to low-temperature refrigeration technology field more particularly to a kind of air-bearing expanding machines.
Background technique
Turbo-expander is air-separating plant, the natural gas/equipment such as oil gas liquefaction separation device and low-temperature grinding
Key portion machine necessary to cooling capacity is obtained, is the heart for guaranteeing package unit stable operation.Its cardinal principle is certain using having
The gas of pressure carry out that adiabatic expansion externally does work and consume gas itself in turbo-expander spiral case it is interior can, to make gas
Body itself is consumingly cooling and achievees the purpose that refrigeration.
Turbo-expander is initially applied to air separation industries, is then used for gas industry again in nineteen sixty.Now,
Turbo-expander has been applied not only to produce in the Cryo Equipments such as air separation, natural gas liquefaction, Cold box, hydrogen helium liquefaction various
The low temperature cooling capacity of temperature grade is also widely used to the energy regenerating of overbottom pressure, waste heat in foreign countries.Gas-bearing expansion turbine
With high revolving speed, high efficiency, the characteristics such as no fretting wear, and lubricant medium is identical as working media, avoids lubrication greasy dirt
Dye system, to also be widely used in turbo-expander.
Gas bearing expanding machine revolving speed is high, and the critical components such as bearing, rotor, impeller, air deflector are vulnerable part, are being repaired
It needs often to dismount in the process, traditional typical structure dismounting is complex, and replacement is not easy, and spiral case processing is complicated, production
Period is longer, higher cost.The lower phenol aldehyde laminated cloth board that installs additional between spiral case and diffuser is easy to make between cold plate and diffuser every cold
It is leaked at gas.The stability of turbo-expander is related with rotor structure, and rotor length is smaller, and critical speed is higher, under high speed
Deformation it is smaller, expanding machine operation it is more stable.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of air-bearing expanding machine, solves existing swollen
The problem of critical components such as bearing, rotor, impeller, air deflector in swollen machine are easy to wear and gas easily leaks.
(2) technical solution
To achieve the above object, the utility model provides the following technical solutions: a kind of air-bearing expanding machine, including centre
Body, volute of blower and expansion spiral case, are separately fixed at the middle machine body between the volute of blower and expansion spiral case
Two sides, the cold end of the middle machine body is inserted into the expansion spiral case, and the dog point of the middle machine body is inserted into described
In volute of blower, the inside of the middle machine body is equipped with rotor, and the both ends of the rotor have been respectively fixedly connected with left bearing and the right side
Bearing, the left bearing by cold end labyrinth is fixed with expansion wheel and the expansion wheel by pin and nut is fixed on described turn
One end of son, the right bearing are fixed with impeller of blower and the impeller of blower by dog point labyrinth and fix by pin and with nut
In the other end of rotor, the expansion wheel and impeller of blower are respectively provided in the expansion spiral case and volute of blower.
Preferably, the expansion spiral case is equipped with air inlet pipe, air deflector and diffuser pipe, and the diffuser pipe is located at described swollen
In swollen spiral case and the diffuser pipe is in left wide right narrow structure, and the inner wall of the narrow end of the diffuser pipe is fixed on the expansion wheel
Edge is close to, and the wide end of the diffuser pipe is fixed on outlet pipe flange by nut, and the air deflector is located at the expansion spiral case
Interior, the air inlet pipe is connected to the expansion spiral case.
Preferably, the volute of blower is equipped with braking gas air blower tube, reducing pipe and exhaust pipe, the reducing pipe and is located at
In the volute of blower and one end of the reducing pipe and the impeller of blower match, and the other end of one end of the reducing pipe passes through
Nut is fixed on braking gas blower pipe flange, and the exhaust pipe is connected to the volute of blower with braking gas air blower tube.
Preferably, material used in the cold end labyrinth and dog point labyrinth is fiber glass epoxy, and in cold end labyrinth and
Dog point labyrinth is provided with labyrinth teeth.
Preferably, the surface of the middle machine body is provided with blanket gas air vent, and the blanket gas air vent passes through intermediate machine
Intracorporal vertical core is connected to the air vent in cold end labyrinth and dog point labyrinth.
Preferably, the left bearing, right bearing use transverse bearing and thrust bearing integral structure, and the rotor is using single
The two-sided thrust structure of thrust button.
(3) beneficial effect
The utility model provides a kind of air-bearing expanding machine, has following the utility model has the advantages that by easy in expanding machine
Damage part concentrates in middle machine body, and the cold end of middle machine body is inserted into expansion spiral case, and dog point is inserted into volute of blower, reduces
Complete machine leakage point shortens rotor length using single thrust dish structure, to improve expanding machine operation stability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the expansion spiral case of the utility model；
Fig. 3 is the structural schematic diagram of the volute of blower of the utility model；
Fig. 4 is the structural schematic diagram of the right bearing of the utility model.
In figure: 1, middle machine body；2, spiral case is expanded；3, volute of blower；4, left bearing；5, cold end labyrinth；6, right bearing；7,
Diffuser pipe；8, air deflector；9, dog point labyrinth；10, expansion wheel；11, impeller of blower；12, air inlet pipe；13, gas air blower tube is braked；
14, reducing pipe；15, exhaust pipe；16, blanket gas air vent.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1,2,3, 4, it is proposed that following embodiments: a kind of air-bearing expanding machine, including middle machine body 1, wind
Machine spiral case 3 and expansion spiral case 2, are separately fixed at the middle machine body 1 between the volute of blower 3 and expansion spiral case 2
Two sides, the cold end of the middle machine body 1 are inserted into the expansion spiral case 2, and the dog point of the middle machine body 1 is inserted into described
In volute of blower 3, the inside of the middle machine body 1 is equipped with rotor, and the both ends of the rotor have been respectively fixedly connected with 4 He of left bearing
Right bearing 6, the left bearing 4 is fixed with expansion wheel 10 by cold end labyrinth 5 and the expansion wheel 10 is solid by pin and nut
It is scheduled on one end of the rotor, the right bearing 6 is fixed with impeller of blower 11 by dog point labyrinth 9 and the impeller of blower 11 passes through
Pin and the other end that rotor is fixed on nut, the expansion wheel 10 and impeller of blower 11 are respectively provided at 2 He of expansion spiral case
In volute of blower 3.
In embodiment, the expansion spiral case 2 is equipped with air inlet pipe 12, air deflector 8 and diffuser pipe 7, the diffuser pipe 7
It is located in the expansion spiral case 2 and the diffuser pipe 7 is in left wide right narrow structure, the inner wall of the narrow end of the diffuser pipe 7 is fixed
It is close at the edge of the expansion wheel 10, the wide end of the diffuser pipe 7 is fixed on outlet pipe flange, the air deflector by nut
8 are located in the expansion spiral case 2, and the air inlet pipe 12 is connected to the expansion spiral case 2.
In embodiment, the volute of blower 3 is equipped with braking gas air blower tube 13, reducing pipe 14 and exhaust pipe 15, institute
One end and the impeller of blower 11 matching that reducing pipe 14 is located at the interior and described reducing pipe 14 of the volute of blower 3 are stated, it is described tapered
The other end of one end of pipe 14 is fixed on braking 13 flange of gas air blower tube by nut, the exhaust pipe 15 and braking gas blower
Pipe 13 is connected to the volute of blower 3.
In embodiment, material used in the cold end labyrinth 5 and dog point labyrinth 9 is fiber glass epoxy, and in cold end
Labyrinth 5 and dog point labyrinth 9 are provided with labyrinth teeth, reinforce the wearability in cold end labyrinth 5 and dog point labyrinth 9.
In embodiment, the surface of the middle machine body 1 is provided with blanket gas air vent 16, and the blanket gas air vent 16 is logical
The vertical core crossed in middle machine body 1 is connected to the air vent in cold end labyrinth 5 and dog point labyrinth 9.Pass through the vertical core in middle machine body 1
It is connect with the air vent in cold end labyrinth 5 and dog point labyrinth 9, respectively to cold end labyrinth 5 and dog point labyrinth 9 for high pressure gas,
The hot fluid for reducing 11 side of cold fluid and impeller of blower of 10 side of expansion wheel is leaked to middle machine body 1.
In embodiment, the left bearing 4, right bearing 6 use transverse bearing and thrust bearing integral structure, the rotor
Using the two-sided thrust structure of single thrust button, thrust button both sides of the face all can be used as thrust surface, be automatically adjusted according to rotor axial power
Two sides thrust gap.
In figures 1-4, the vulnerable part in expanding machine is concentrated in middle machine body 1, the cold end of middle machine body 1 is inserted into swollen
In swollen spiral case 2, dog point is inserted into volute of blower 3, reduces complete machine leakage point, and the rotor inside middle machine body 1 is using single thrust
Dish structure shortens rotor length, to improve expanding machine operation stability.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of air-bearing expanding machine, it is characterised in that: including middle machine body (1), volute of blower (3) and expansion spiral case
(2), be separately fixed at the two sides of the middle machine body (1) between the volute of blower (3) and expansion spiral case (2), it is described in
Between the cold end of body (1) be inserted into the expansion spiral case (2), the dog point of the middle machine body (1) is inserted into the blower
In spiral case (3), the inside of the middle machine body (1) is equipped with rotor, and the both ends of the rotor have been respectively fixedly connected with left bearing (4)
With right bearing (6), the left bearing (4) is fixed with expansion wheel (10) by cold end labyrinth (5) and the expansion wheel (10) passes through
Pin and nut are fixed on one end of the rotor, and the right bearing (6) is fixed with impeller of blower (11) by dog point labyrinth (9)
And the impeller of blower (11) is fixed on the other end of rotor, the expansion wheel (10) and impeller of blower (11) by pin and with nut
It is respectively provided in the expansion spiral case (2) and volute of blower (3).
2. a kind of air-bearing expanding machine according to claim 1, it is characterised in that: the expansion spiral case (2) is equipped with
Air inlet pipe (12), air deflector (8) and diffuser pipe (7), the diffuser pipe (7) is located in the expansion spiral case (2) and the expansion
For pressure pipe (7) in left wide right narrow structure, the edge that the inner wall of the narrow end of the diffuser pipe (7) is fixed on the expansion wheel (10) is tight
Patch, the wide end of the diffuser pipe (7) are fixed on outlet pipe flange by nut, and the air deflector (8) is located at the expansion spiral case
(2) in, the air inlet pipe (12) is connected to the expansion spiral case (2).
3. a kind of air-bearing expanding machine according to claim 1, it is characterised in that: the volute of blower (3) is equipped with
Gas air blower tube (13), reducing pipe (14) and exhaust pipe (15) are braked, the reducing pipe (14) is located in the volute of blower (3)
And one end of the reducing pipe (14) and the impeller of blower (11) match, the other end of one end of the reducing pipe (14) passes through spiral shell
Mother is fixed on braking gas air blower tube (13) flange, and the exhaust pipe (15) is connected to the blower snail with braking gas air blower tube (13)
Shell (3).
4. a kind of air-bearing expanding machine according to claim 1, it is characterised in that: the cold end labyrinth (5) and braking
Holding material used in labyrinth (9) is fiber glass epoxy, and is provided with labyrinth teeth in cold end labyrinth (5) and dog point labyrinth (9).
5. a kind of air-bearing expanding machine according to claim 1, it is characterised in that: the surface of the middle machine body (1)
It is provided with blanket gas air vent (16), the blanket gas air vent (16) passes through vertical core and cold end labyrinth (5) in middle machine body (1)
It is connected to the air vent of dog point labyrinth (9).
6. a kind of air-bearing expanding machine according to claim 1, it is characterised in that: the left bearing (4), right bearing
(6) transverse bearing and thrust bearing integral structure are used, the rotor is using the two-sided thrust structure of single thrust button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920316962.6U CN209569035U (en) | 2019-03-13 | 2019-03-13 | A kind of air-bearing expanding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920316962.6U CN209569035U (en) | 2019-03-13 | 2019-03-13 | A kind of air-bearing expanding machine |
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| Publication Number | Publication Date |
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| CN209569035U true CN209569035U (en) | 2019-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920316962.6U Active CN209569035U (en) | 2019-03-13 | 2019-03-13 | A kind of air-bearing expanding machine |
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| CN (1) | CN209569035U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320499A (en) * | 2020-10-10 | 2022-04-12 | 中国科学院理化技术研究所 | Full low temperature gas bearing turbo expander |
-
2019
- 2019-03-13 CN CN201920316962.6U patent/CN209569035U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320499A (en) * | 2020-10-10 | 2022-04-12 | 中国科学院理化技术研究所 | Full low temperature gas bearing turbo expander |
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