CN201963596U - Centrifugal compressor and impeller thereof - Google Patents

Centrifugal compressor and impeller thereof Download PDF

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Publication number
CN201963596U
CN201963596U CN2011200422664U CN201120042266U CN201963596U CN 201963596 U CN201963596 U CN 201963596U CN 2011200422664 U CN2011200422664 U CN 2011200422664U CN 201120042266 U CN201120042266 U CN 201120042266U CN 201963596 U CN201963596 U CN 201963596U
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CN
China
Prior art keywords
impeller
vane
wheel cap
wheel
centrifugal compressor
Prior art date
Application number
CN2011200422664U
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Chinese (zh)
Inventor
田国光
范志强
彭乔明
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长沙赛尔机泵有限公司
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Priority to CN2011200422664U priority Critical patent/CN201963596U/en
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Publication of CN201963596U publication Critical patent/CN201963596U/en

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Abstract

The utility model discloses a centrifugal compressor impeller and a centrifugal compressor provided with the centrifugal compressor impeller, wherein the centrifugal compressor impeller comprises a wheel disc (1), a first blade set (2) arranged at one side of the wheel disc (1), and a second blade set (3) arranged at the other side of the wheel disc (1), and the centrifugal compressor impeller is a fully controllable vortex ternary impeller; and the centrifugal compressor impeller also comprises a first wheel cover (4) welded at the outer side of the first blade set (2), and a second wheel cover (5) welded at the outer side of the second blade set (3). With the centrifugal compressor impeller, the working efficiency of the centrifugal compressor is improved.

Description

Centrifugal compressor and impeller thereof
Technical field
The utility model relates to compressor, relates in particular to a kind of Centrufugal compressor impeller and is provided with the centrifugal compressor of this impeller.
Background technique
Centrifugal compressor is made up of rotor, stator and bearing etc.Its rotor is enclosed within by parts such as impellers to be formed on the main shaft, and is supported on the bearing, is driven and high speed rotating by power engine.Impeller is the critical component of centrifugal compressor, comprises wheel disc and the blade that is fixed on the wheel disc, and a part of impeller also comprises wheel cap, is positioned at the outside of blade.The impeller of existing centrifugal compressor mostly is the binary impeller of semi-open type or the vertical element 3 d impeller of semi-open type, and two groups of blades are arranged on the both sides of wheel disc back-to-back, are made of one, and do not have wheel cap and at opposite side wheel cap are arranged in air-flow suction port one side.During compressor operating, from the axial admission of wheel disc both sides, the radially relief opening that the leaf road in the vane group of both sides forms can and form an exhaust outlet together.
Half-opened impeller does not need the wheel cap sealing, wheel cap is fixed on the casing, being referred to as " false wheel cap " when assembling has relatively high expectations for the gap control that false wheel cap and leaf push up whole circular arc, and, if rotor is just in case when bigger vibration takes place, impeller might contact with static false wheel cap and damage impeller.In addition, the working efficiency of existing binary impeller or vertical element 3 d impeller has much room for improvement.
The model utility content
It is higher that technical problem to be solved in the utility model provides a kind of working efficiency, and the non-damageable Centrufugal compressor impeller of impeller blade and be provided with the centrifugal compressor of this impeller.
For solving the problems of the technologies described above, according to an aspect of the present utility model, provide a kind of Centrufugal compressor impeller, comprising: wheel disc; First vane group is arranged on a side of wheel disc; And second vane group, be arranged on the opposite side of wheel disc, wherein, Centrufugal compressor impeller is a complete controlled whirlpool 3 d impeller; Centrufugal compressor impeller also comprises: first wheel cap is welded on the outside of first vane group; And second wheel cap, be welded on the outside of second vane group.
Further, the center, wheel disc both sides of impeller respectively has a gas access; Gas outlet of the common formation of passage between the blade in the passage between the blade in first vane group and second vane group.
Further, wheel disc, first vane group and second vane group are integrally formed; Blade surface in first vane group and second vane group is a milling face.
Further, first vane group and second vane group are welded with wheel disc respectively.
Further, first vane group is identical with the shape and size of second vane group; First wheel cap is identical with the shape and size of second wheel cap.
Further, first wheel cap comprises: first ring part, for cylindric; Second ring part is positioned at the inboard of first ring part along the axial direction of impeller, and the radius outside-in increases gradually, and has the circular arc cross section; Second wheel cap comprises: the 3rd ring part, for cylindric; The 4th ring part is positioned at the inboard of the 3rd ring part along the axial direction of impeller, and the radius outside-in increases gradually, and has the circular arc cross section.
Further, the interlaced setting of blade of first vane group and second vane group.
According on the other hand of the present utility model, a kind of centrifugal compressor is provided, this centrifugal compressor is provided with the Centrufugal compressor impeller of above-mentioned any one.
Further, also comprise the sealing of first wheel cap, be annular, be fixed in the casing of centrifugal compressor, and be set in outside first wheel cap; The internal surface of first wheel cap sealing has broach, has the gap between the broach and first wheel cap; The sealing of second wheel cap is annular, is fixed in the casing of centrifugal compressor, and is set in outside second wheel cap; The internal surface of second wheel cap sealing has broach, has the gap between the broach and second wheel cap.
Further, sealing of first wheel cap and the sealing of second wheel cap are made by soft metallic material or nonmetallic material.
The utlity model has following beneficial effect:
1. the Centrufugal compressor impeller in the utility model is a complete controlled whirlpool 3 d impeller, and the outside of two groups of vane group is provided with wheel cap, make internal leakage lower than half-opened impeller, like this, just make the working efficiency of centrifugal compressor improve 8%-10%, exceed 2%-3% with respect to the centrifugal compressor of semi-open type 3 d impeller with vertical element with respect to centrifugal compressor with binary impeller.
2. the wheel disc both sides in the utility model are respectively equipped with vane group, form " back-to-back " formula impeller, with respect to the one-sided impeller with blade of wheel disc, under the identical situation of the driving power of compressor, can produce higher pressure and flow; In addition, with respect to the one-sided impeller of wheel disc with blade, satisfying under the prerequisite of same linear velocity, the external diameter of the impeller in the utility model can be done forr a short time, the exhaust outlet height of individual blade can reduce, improve the rotating speed of impeller, this helps the design and the manufacturing of impeller, and saves material.In addition, the external diameter of impeller reduces to make that the external diameter of casing also can dwindle thereupon, thereby saves material.
In addition, if being made as of first vane group and second vane group is of similar shape and size, because the radially relief opening that the leaf road in the vane group of both sides forms can and form a gas outlet together, thereby can be from the axial admission of wheel disc both sides, and give vent to anger from this gas outlet, when compressor operating, can produce axial force hardly, highly beneficial to the long-time running of compressor.
3. in the centrifugal compressor of the present utility model; two wheel caps are welded on the outside of two groups of vane group respectively; soft wheel cap is sealingly fastened on the casing; just in case rotor takes place to shake by force; wheel cap can be in the impeller rotary course contacts with soft impeller seals; thereby the protection impeller, the maintenance cost of reduction centrifugal compressor.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.With reference to figure, the utility model is described in further detail below.
Description of drawings
Accompanying drawing is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is according to the main cross-sectional schematic of the part of first embodiment's of the present utility model Centrufugal compressor impeller;
Fig. 2 is the blade structure schematic representation according to first embodiment's of the present utility model Centrufugal compressor impeller;
Fig. 3 forms schematic representation according to the part of first embodiment's of the present utility model Centrufugal compressor impeller;
Fig. 4 is according to the main cross-sectional schematic of the part of first embodiment's of the present utility model Centrufugal compressor impeller, wherein shows the wheel cap sealing in the centrifugal compressor in the lump.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in figures 1 and 3, the Centrufugal compressor impeller according to first embodiment of the present utility model comprises: wheel disc 1, first vane group 2 and second vane group 3.Wherein, first vane group 2 is arranged on a side of wheel disc 1, and second vane group 3 is arranged on the opposite side of wheel disc 1.These two groups of vane group form " back-to-back " formula impeller, with respect to the one-sided impeller with blade of wheel disc, under the identical situation of the driving power of compressor, can produce higher pressure and flow; In addition, with respect to the one-sided impeller of wheel disc with blade, because two groups of blades of Centrufugal compressor impeller of the present utility model are worked simultaneously, thereby satisfying under the prerequisite of same linear velocity, the external diameter of impeller can be done forr a short time, the exhaust outlet height of individual blade can reduce, and improves the rotating speed of impeller.This helps the design and the manufacturing of impeller, and saves material, reduces the cost of production of Centrufugal compressor impeller.In addition, the external diameter of impeller reduces to make that the external diameter of casing also can dwindle thereupon, thereby saves material, reduces the cost of production of centrifugal compressor.
Can also see that from Fig. 1 and Fig. 3 this Centrufugal compressor impeller also comprises first wheel cap 4 and second wheel cap 5, wherein, first wheel cap 4 is welded on the outside of first vane group 2; Second wheel cap 5 is welded on the outside of second vane group 3.Because the outside of two groups of vane group is provided with wheel cap, has formed double shrouded wheel, makes that the internal leakage of impeller is lower than the impeller of semi-open type, thereby has improved the working efficiency of centrifugal compressor greatly.In addition; first wheel cap 4 is welded on the outside of first vane group 2; second wheel cap 5 is welded on the outside of second vane group 3; just in case rotor takes place to shake by force; first wheel cap 4 and second wheel cap 5 can be protected blade in first vane group 2 and the blade in second vane group 3 respectively, thereby reduce the maintenance cost of centrifugal compressor.
In addition, as shown in Figure 2, the more important thing is that this Centrufugal compressor impeller is a complete controlled whirlpool 3 d impeller, the blade shape of this impeller makes centrifugal compressor improve working efficiency with respect to existing semi-open type 3 d impeller with vertical element.In a word, make the efficient of centrifugal compressor improve 8%-10% according to first embodiment's of the present utility model Centrufugal compressor impeller, exceed 2%-3% with respect to the centrifugal compressor of semi-open type 3 d impeller with vertical element with respect to centrifugal compressor with binary impeller.
Preferably, the center, wheel disc 1 both sides of Centrufugal compressor impeller respectively has a gas access; Gas outlet of the common formation of passage between the blade in the passage between the blade in first vane group 2 and second vane group 3.Particularly, because the radially relief opening that the leaf road in the vane group of both sides forms can and form a gas outlet together, thus can be during centrifugal compressor work from the axial admission of wheel disc both sides, and give vent to anger from this gas outlet.With respect to the situation of a side air inlet that only is provided with the impeller of vane group, the axial force that the impeller in the utility model has been produced when having alleviated work to a great extent in a side of wheel disc.
Preferably, wheel disc 1, first vane group 2 and second vane group 3 are integrally formed; And the blade surface in first vane group 2 and second vane group 3 is a milling face.That is to say that first vane group 2 and second vane group 3 of wheel disc 1 both sides form by whole milling.This makes that the integrity of whole impeller is better, and is not fragile during work.
Perhaps, also first vane group 2 and second vane group 3 can be welded with wheel disc 1 respectively.
As indicated above, in the present embodiment, the both sides of wheel disc 1 are equipped with impeller sets, thereby have alleviated the axial force that is produced when working to a great extent.More preferably, in the present embodiment, it is identical that first vane group 2 and second vane group 3 are set to shape and size; Correspondingly, the shape and size of first wheel cap 4 and second wheel cap 5 are also identical, be appreciated that, can reduce axial force to the full extent like this, in theory in the case, because two vane group shape and size are identical, produce axial force hardly during centrifugal compressor work, help the long-time running of centrifugal compressor more.
As shown in Figure 1, in the present embodiment, first wheel cap 4 comprises first ring part and second ring part.Wherein, first ring part is cylindric; Second ring part is positioned at the inboard of first ring part along the axial direction of impeller, and the radius outside-in increases gradually, and has the circular arc cross section; Similarly, second wheel cap 5 comprises the 3rd ring part and the 4th ring part.Wherein, the 3rd ring part is cylindric; The 4th ring part is positioned at the inboard of the 3rd ring part along the axial direction of impeller, and the radius outside-in increases gradually, and has the circular arc cross section.
In addition, in the present embodiment, the interlaced setting of blade of first vane group 2 and second vane group 3.The alternate setting of blade length in every group of vane group.
The utility model is also protected a kind of centrifugal compressor, is provided with above-mentioned any Centrufugal compressor impeller in this centrifugal compressor.Analysis by mentioned earlier can be made lessly owing to its impeller as can be known, and this centrifugal compressor manufactures the saving material, and cost of production is low; Its impeller is a complete controlled whirlpool 3 d impeller, and internal leakage is lower than half-opened impeller, makes that the working efficiency of compressor is higher; " back-to-back " of impeller is arranged so that the axial force of compressor generation when work is less, but long-time running.
In the present embodiment, as shown in Figure 4, centrifugal compressor also comprises first wheel cap sealing, 6 and second wheel cap sealing 7, and these two wheel cap sealings are annular, be fixed in the casing (not shown) of centrifugal compressor, and be set in respectively outside first wheel cap 4 and second wheel cap 5.The internal surface of this first wheel cap sealing, 6 and second wheel cap sealing 7 all has broach, has the gap between the broach of first wheel cap sealing 6 and first wheel cap 4, has the gap between the broach of second wheel cap sealing 7 and second wheel cap 5.In centrifugal compressor when work,, it is 7 static that first wheel cap sealing, 6 and second wheel cap seals, and first wheel cap 4 and 5 rotations in the sealing 7 of first wheel cap sealing, 6 and second wheel cap respectively along with the rotation of rotor of second wheel cap.
Preferably, the sealing 7 of first wheel cap sealing, 6 and second wheel cap is by soft metallic material, for example aluminium or copper, or nonmetallic material are made.Like this, just in case rotor takes place to shake by force, two wheel caps can contact with two soft impeller sealses respectively in the impeller rotary course, thus the protection impeller, the maintenance cost of reduction centrifugal compressor.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (10)

1. Centrufugal compressor impeller comprises:
Wheel disc (1);
First vane group (2) is arranged on a side of described wheel disc (1); And
Second vane group (3) is arranged on the opposite side of described wheel disc (1),
It is characterized in that,
Described Centrufugal compressor impeller is a complete controlled whirlpool 3 d impeller;
Described Centrufugal compressor impeller also comprises:
First wheel cap (4) is welded on the outside of described first vane group (2); And
Second wheel cap (5) is welded on the outside of described second vane group (3).
2. Centrufugal compressor impeller according to claim 1 is characterized in that,
The wheel disc of described impeller (1) center, both sides respectively has a gas access;
Gas outlet of the common formation of passage between the blade in passage between the blade in described first vane group (2) and described second vane group (3).
3. Centrufugal compressor impeller according to claim 1 is characterized in that,
Described wheel disc (1), described first vane group (2) and described second vane group (3) are integrally formed;
Blade surface in described first vane group (2) and described second vane group (3) is a milling face.
4. Centrufugal compressor impeller according to claim 1 is characterized in that, described first vane group (2) and described second vane group (3) are welded with described wheel disc (1) respectively.
5. according to any one described Centrufugal compressor impeller among the claim 1-4, it is characterized in that,
Described first vane group (2) is identical with the shape and size of described second vane group (3);
Described first wheel cap (4) is identical with the shape and size of described second wheel cap (5).
6. Centrufugal compressor impeller according to claim 1 is characterized in that,
Described first wheel cap (4) comprising:
First ring part is for cylindric;
Second ring part is positioned at the inboard of described first ring part along the axial direction of described impeller, and the radius outside-in increases gradually, and has the circular arc cross section;
Described second wheel cap (5) comprising:
The 3rd ring part is for cylindric;
The 4th ring part is positioned at the inboard of described the 3rd ring part along the axial direction of described impeller, and the radius outside-in increases gradually, and has the circular arc cross section.
7. Centrufugal compressor impeller according to claim 1 is characterized in that, the interlaced setting of blade of described first vane group (2) and described second vane group (3).
8. a centrifugal compressor is characterized in that, is provided with any one described Centrufugal compressor impeller among the claim 1-7.
9. centrifugal compressor according to claim 8 is characterized in that, also comprises
First wheel cap sealing (6) is annular, is fixed in the casing of described centrifugal compressor, and is set in outside described first wheel cap (4); The internal surface of described first wheel cap sealing (6) has broach, has the gap between described broach and described first wheel cap (4);
Second wheel cap sealing (7) is annular, is fixed in the casing of described centrifugal compressor, and is set in outside described second wheel cap (5); The internal surface of described second wheel cap sealing (7) has broach, has the gap between described broach and described second wheel cap (5).
10. centrifugal compressor according to claim 9 is characterized in that, described first wheel cap sealing (6) and described second wheel cap sealing (7) are made by soft metallic material or nonmetallic material.
CN2011200422664U 2011-02-18 2011-02-18 Centrifugal compressor and impeller thereof CN201963596U (en)

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CN2011200422664U CN201963596U (en) 2011-02-18 2011-02-18 Centrifugal compressor and impeller thereof

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103148016A (en) * 2013-03-22 2013-06-12 清华大学 Blade forward-swept centrifugal compressor and turbocharger
CN104343698A (en) * 2013-08-02 2015-02-11 株式会社日立制作所 Multistage centrifugal compressor
CN104421201A (en) * 2013-08-27 2015-03-18 霍尼韦尔国际公司 Structurally asymmetric two-sided turbocharger impeller
CN109611377A (en) * 2018-12-12 2019-04-12 中国北方发动机研究所(天津) A kind of electric booster impeller
CN109654046A (en) * 2018-12-12 2019-04-19 中国北方发动机研究所(天津) A kind of electric booster
CN110043486A (en) * 2019-04-02 2019-07-23 中国北方发动机研究所(天津) A kind of dynamoelectric compressor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103148016A (en) * 2013-03-22 2013-06-12 清华大学 Blade forward-swept centrifugal compressor and turbocharger
CN104343698A (en) * 2013-08-02 2015-02-11 株式会社日立制作所 Multistage centrifugal compressor
CN104343698B (en) * 2013-08-02 2017-01-18 株式会社日立制作所 Multistage centrifugal compressor
CN104421201A (en) * 2013-08-27 2015-03-18 霍尼韦尔国际公司 Structurally asymmetric two-sided turbocharger impeller
US10233756B2 (en) 2013-08-27 2019-03-19 Garrett Transportation I Inc. Two-sided turbocharger wheel with differing blade parameters
CN109611377A (en) * 2018-12-12 2019-04-12 中国北方发动机研究所(天津) A kind of electric booster impeller
CN109654046A (en) * 2018-12-12 2019-04-19 中国北方发动机研究所(天津) A kind of electric booster
CN110043486A (en) * 2019-04-02 2019-07-23 中国北方发动机研究所(天津) A kind of dynamoelectric compressor

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CP01 Change in the name or title of a patent holder

Address after: 410100 No. two, No. 5 East, Changsha Economic Development Zone, Hunan, China

Patentee after: Changsha Saier Turbine Machinery Co., Ltd.

Address before: 410100 No. two, No. 5 East, Changsha Economic Development Zone, Hunan, China

Patentee before: Xian Jiaoda SER Turbo-Machinery Equipment Co., Ltd.

Address after: 410100 No. two, No. 5 East, Changsha Economic Development Zone, Hunan, China

Patentee after: Changsha Saier Turbine Machinery Co., Ltd.

Address before: 410100 No. two, No. 5 East, Changsha Economic Development Zone, Hunan, China

Patentee before: Xian Jiaoda SER Turbo-Machinery Equipment Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: CHANGSHA SAI ER TOUPING MACHINERY CO., LTD.

Free format text: FORMER NAME: XIAN JIAODA SER TURBO-MACHINERY EQUIPMENT CO., LTD.

Owner name: CHANGSHA SAI'ER TOUPING MACHINERY CO., LTD.

Free format text: FORMER NAME: XIAN JIAODA SER TURBO-MACHINERY EQUIPMENT CO., LTD.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110907

Termination date: 20190218

CF01 Termination of patent right due to non-payment of annual fee