CN203756586U - Sealing part and centrifugal compressor - Google Patents
Sealing part and centrifugal compressor Download PDFInfo
- Publication number
- CN203756586U CN203756586U CN201420044025.7U CN201420044025U CN203756586U CN 203756586 U CN203756586 U CN 203756586U CN 201420044025 U CN201420044025 U CN 201420044025U CN 203756586 U CN203756586 U CN 203756586U
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- China
- Prior art keywords
- sealing
- hole
- broach
- comb structure
- angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 title claims abstract description 91
- 238000009826 distribution Methods 0.000 claims abstract description 7
- 230000001154 acute effect Effects 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a sealing part and centrifugal compressor, its sealing part includes the sealing member, is provided with the through-hole on the sealing member, is provided with the first broach structure that distributes along the axis direction of through-hole in the through-hole of sealing member, and the surface of sealing member is provided with the second broach structure that distributes along the axis direction of through-hole. The centrifugal compressor comprises the sealing part. The utility model discloses a sealed part and centrifugal compressor, structural design is simple reasonable, through first broach structure and the second broach structure that is provided with the axis direction distribution along the through-hole on the sealing member, when gaseous through first broach structure and second broach structure, pressure descends gradually, and the pressure differential is more and more littleer, and the atmospheric pressure of last sealing member both sides tends to the same, and gas flow stops, reaches sealed effect.
Description
Technical field
The utility model relates to mechanical seal structure, particularly relates to a kind of obturator being applied on centrifugal compressor, and the centrifugal compressor that contains above-mentioned obturator.
Background technique
At present, the turbomachine inner sealings such as centrifugal compressor, generally adopt labyrinth seal form, that is: a fixing labyrinth seal part coordinates with rotor clearance.When air-flow passes through from gap, the broach of flowing through produces convolution, is equivalent to the effect of throttling.Be equivalent to experience repeatedly throttling through multiple broach, pressure declines gradually and is tending towards back pressure.So, the leakage that labyrinth seal can avoid compressor inside to cause due to pressure difference.In general, broach is more, and sealing effect is better.But because structure is limit, broach number is just limited.
In prior art, also have and there is axial broach and the labyrinth seal part of broach radially simultaneously, but manufacturing, when assembling, need to consider precision and dimensional chain axially and radially simultaneously, cause complex process, and cost is higher.
Model utility content
Based on this, be necessary for problems such as broach part complex manufacturing technology, provide a kind of technique simply and the obturator of increase comb structure, and the centrifugal compressor that contains above-mentioned obturator.Above-mentioned purpose is achieved through the following technical solutions:
A kind of obturator, comprises Sealing, is provided with through hole on Sealing;
In the through hole of described Sealing, be provided with the first comb structure distributing along the axial direction of described through hole;
The outer surface of described Sealing is provided with the second comb structure distributing along the axial direction of described through hole.
Above-mentioned purpose can also further realize by following technical proposals.
Wherein, described the first comb structure is provided with multiple the first broach, and multiple described the first broach become column distribution along the axial direction of described through hole;
Described the second comb structure is provided with multiple the second broach, and multiple described the second broach become column distribution along the axial direction of described through hole.
Wherein, described the first broach is provided with the first plane of inclination and the second plane of inclination;
There is angle in the radial direction of described the first plane of inclination and described through hole, and described angle is acute angle;
There is angle in the radial direction of described the second plane of inclination and described through hole, and described angle is acute angle or right angle;
Described the second broach is provided with the 3rd plane of inclination and the 4th plane of inclination;
There is angle in the radial direction of described the 3rd plane of inclination and described through hole, and described angle is acute angle;
There is angle in the radial direction of described the 4th plane of inclination and described through hole, and described angle is acute angle or right angle.
Wherein, the shape of the shape of described the first broach, size and described the second broach, measure-alike or different.
Wherein, described obturator also comprises supporting element, and described Sealing is arranged on described supporting element;
Described Sealing and described supporting element are integrated or removably connect.
Also relate to a kind of centrifugal compressor, comprise body, impeller, axle, impeller is arranged on axle, also comprises the obturator as described in above-mentioned arbitrary technical characteristics;
Described obturator is fixedly mounted on described body, matches with described impeller, axle.
Wherein, the first comb structure of described Sealing matches with described axle, forms primary sealing area;
The second comb structure of described Sealing matches with described impeller, forms secondary sealing area.
Wherein, the first comb structure of described Sealing also matches with described impeller, forms the 3rd sealing surface.
Wherein, on described impeller, be provided with the first lug boss and the second lug boss, and described the first lug boss and described the second lug boss formation annular groove;
Described annular groove has the second sidewall, and described the second sidewall matches with described the second comb structure, forms secondary sealing area.
Wherein, described annular groove has the first side wall, and described the first side wall matches with described the first comb structure, forms the 3rd sealing surface.
Wherein, described the first side wall is the circumferential surface that described the first lug boss forms described annular groove;
Described the second sidewall is the circumferential surface that described the second lug boss forms described annular groove.
Wherein, the axis of the through hole of described Sealing and the dead in line of described axle.
The beneficial effects of the utility model are:
Obturator of the present utility model and centrifugal compressor, structural design advantages of simple, by be provided with the first comb structure and the second comb structure that distribute along the axial direction of through hole on Sealing, Sealing coordinates with axle, impeller, and gas flows to low voltage side from high pressure side, during through the first comb structure and the second comb structure, pressure declines gradually, and pressure difference is more and more less, and the air pressure of finally sealed part both sides is tending towards identical, gas flow stops, and reaches sealing effect.By the second comb structure increasing, increase the quantity of broach, improve sealing effect, can reach the object that improves centrifugal compressor energy efficiency coefficient.
Brief description of the drawings
Fig. 1 is centrifugal compressor one embodiment's of the present utility model partial sectional view;
Fig. 2 is the partial sectional view of the obturator in the centrifugal compressor shown in Fig. 1;
Fig. 3 is the partial enlarged drawing at the A place of obturator shown in Fig. 2;
Fig. 4 is the partial enlarged drawing at the B place of obturator shown in Fig. 2;
Fig. 5 is the partial sectional view of the impeller in the centrifugal compressor shown in Fig. 1;
Wherein:
100-obturator;
110-Sealing;
111-the first comb structure;
1111-the first broach;
11111-the first plane of inclination; 11112-the second plane of inclination;
112-the second comb structure;
1121-the second broach;
11211-the 3rd plane of inclination; 11212-the 4th plane of inclination;
120-supporting element;
200-axle;
300-impeller;
310-the first lug boss;
311-the first side wall;
320-the second lug boss;
321-the second sidewall.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearer, by the following examples, and by reference to the accompanying drawings, sealing configuration of the present utility model and centrifugal compressor are further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, centrifugal compressor (not shown) of the present utility model, comprise body (not shown), impeller 300, axle 200 and obturator 100, impeller 300 is arranged on axle 200, obturator 100 is fixedly mounted on body, obturator 100 maintains static, and obturator 100 matches with impeller 300, axle 200.
Centrifugal compressor relies on impeller 300 to refrigerant acting, in acting process, prevents that coolant leakage from being necessary work, otherwise, can affect the acting ability of centrifugal compressor, cause energy efficiency coefficient to decline.So, also needing sealing in the inside of centrifugal compressor, centrifugal compressor of the present utility model adopts and seals with the obturator 100 of the first comb structure 111 and the second comb structure 112.
Referring to Fig. 2 to Fig. 5, obturator 100 of the present utility model, comprise Sealing 110 and supporting element 120, Sealing 110 is installed on supporting element 120, on Sealing 110, be provided with through hole (not shown), in the through hole of Sealing 110, be provided with the first comb structure 111 distributing along the axial direction of through hole, the outer surface of Sealing 110 is provided with the second comb structure 112 distributing along the axial direction of through hole.
By the first comb structure 111 and the second comb structure 112 that distribute along the axial direction of through hole are set on Sealing 110, Sealing 110 is in the time matching with axle 200, gas flows to low voltage side from high pressure side, during through the first comb structure 111 and the second comb structure 112, pressure declines gradually, and pressure difference is more and more less, and the air pressure of finally sealed part 100 both sides is tending towards identical, gas flow stops, and reaches sealing effect.
By the second comb structure 112 increasing, increase the quantity of broach, improve the sealing effect of the utility model obturator 100.
As a kind of embodiment, the first comb structure 111 is provided with multiple the first broach 1111, the second comb structures 112 and is provided with multiple the second broach 1121.The quantity of the first broach 1111 can be identical with the quantity of the second broach 1121, can be different.
By multiple the second broach 1121 on the second comb structure 112 increasing, can reduce the pressure of Sealing 110 both sides, improve sealing effect.
Further, multiple the first broach 1111 become column distribution along the axial direction of through hole, and multiple the second broach 1121 become column distribution along the axial direction of through hole.
As shown in Figure 3, as a kind of embodiment, the first broach 1111 is provided with the first plane of inclination 11111 and the second plane of inclination 11112, there is angle with the radial direction of through hole in the first plane of inclination 11111, and angle is acute angle, there is angle with the radial direction of through hole in the second plane of inclination 11112, and angle is acute angle or right angle.
The first broach 1111 is introduced gas by the first plane of inclination 11111, the second plane of inclination 11112 is for buffer gas, through introducing and the buffering of multiple the first broach 1111, can reach the effect that reduces gas pressure, and the wear resistance of the first broach 1111 can be improved in the first plane of inclination 11111 and the second plane of inclination 11112.
As shown in Figure 4, the second broach 1121 is provided with the 3rd plane of inclination 11211 and 11212, the three plane of inclination 11211, the 4th plane of inclination exist angle with the radial direction of through hole, and angle is acute angle, there is angle with the radial direction of through hole in the 4th plane of inclination 11212, and angle is acute angle or right angle.
The second broach 1121 is introduced gas by the 3rd plane of inclination 11211, the 4th plane of inclination 11212 is for buffer gas, through introducing and the buffering of multiple the second broach 1121, can reach the effect that reduces gas pressure, and the wear resistance of the second broach 1121 can be improved in the 3rd plane of inclination 11211 and the 4th plane of inclination 11212.
In the present embodiment, the first plane of inclination 11111 is acute angle with the angle of the radial direction of through hole, and the second plane of inclination 11112 is right angle with the angle of the radial direction of through hole; The 3rd plane of inclination 11211 is acute angle with the radial direction of through hole, and the 4th plane of inclination 11212 is right angle with the radial direction of through hole.
Further, the shape of the shape of the first broach 1111, size and the second broach 1121, measure-alike or different.In the present embodiment, for the air pressure of balanced seal part 110 both sides, the shape of the shape of the first broach 1111, size and the second broach 1121, measure-alike.
As a kind of embodiment, Sealing 110 is integrated or removably connects with supporting element 120.In the present embodiment, Sealing 110 adopts integrated processing mode to process with supporting element 120.
Sealing 110 matches with the first comb structure 111 with axle 200, because having air pressure, the both sides of Sealing 110 exist, gas flows to low voltage side by the gap of Sealing 110 from high pressure side, during through first first broach 1111, pressure drop, after multiple the first broach 1111, pressure difference is more and more less.Equally, Sealing 110 matches with the second comb structure 112 with impeller 300, again passes through one by one multiple the second broach 1121 through the gas of first the second broach 1121, and pressure further declines, and last, the both sides air pressure of Sealing 110 is tending towards identical.So gas flow stops, reaching sealing effect.
As shown in Figure 5, as a kind of embodiment, the first comb structure 111 of Sealing 110 matches with axle, forms primary sealing area, and the second comb structure 112 of Sealing 110 matches with impeller, forms secondary sealing area.The axle 200 of centrifugal compressor matches with the first comb structure 111 of the through hole of Sealing 110, and impeller 300 matches with the second comb structure 112 on Sealing 110.
Further, the first comb structure 111 of Sealing 110 also matches with impeller 300, forms the 3rd sealing surface.
As a kind of embodiment, on impeller 300, be provided with the first lug boss 310 and the second lug boss 320, the first lug boss 310 is parts of impeller 300 wheel discs, the second lug boss 320 is parts of impeller 300 wheel hubs, and the first lug boss 310 and the second lug boss 320 form annular groove, annular groove has the second sidewall 321, the second sidewalls 321 and matches with the second comb structure 112, forms secondary sealing area.
Annular groove has the first side wall 311, and the first side wall 311 matches with the first comb structure 111, forms the 3rd sealing surface.
Further, the first side wall 311 is the circumferential surface that the first lug boss 310 forms annular groove, and the second sidewall 321 is the circumferential surface that the second lug boss 320 forms annular groove.
Due to problems such as preparation processs, between through hole and axle 200, there is gap, between Sealing 110 and impeller 300, there is gap, ensure that gap is as far as possible little, gas flow in the first comb structure 111 and the second comb structure 112 by gap, and reduce gas flow by the first comb structure 111 and the second comb structure 112, keep the air pressure balance of Sealing 110 both sides.
As a kind of embodiment, the first comb structure 111 and the second comb structure 112 are all along the axial direction of through hole and arrange, and only need to manufacture time, diameter dimension and coaxality reach the requirement of matching gap design.Assembling does not have special requirement, so technique is uncomplicated, cost does not improve.Therefore, centrifugal compressor of the present utility model requires the axis of through hole and the dead in line of axle 200 of Sealing 110, to meet the requirement of coaxality.
The inner sealing of centrifugal compressor, general employing seals with the Sealing 110 of the first comb structure 111 and the second comb structure 112, has gap between fixing Sealing 110 and axle 200 that is:.When air-flow passes through from gap, multiple second broach 1121 of multiple first broach 1111 of first comb structure 111 of flowing through and the second comb structure 112 produce convolution, are equivalent to the effect of throttling.
Be equivalent to experience repeatedly throttling through multiple the first broach 1111 and multiple the second broach 1121, pressure declines gradually and is tending towards back pressure.So, the leakage that can avoid the inside of centrifugal compressor to cause due to pressure difference with the Sealing 110 of the first comb structure 111 and the second comb structure 112.
Obturator 100 of the present utility model is in order to make full use of the confined space, at the back side of the first comb structure 111 of Sealing 110, increase by the second comb structure 112, the annular groove that the first lug boss 310 of impeller 300 forms with the second lug boss 320 simultaneously coordinates with the second comb structure 112.By the second comb structure 112 increasing, directly increase the quantity of broach, improve sealing effect.
The obturator of above-mentioned model utility and centrifugal compressor, structural design advantages of simple, by be provided with the first comb structure and the second comb structure that distribute along the axis of through hole on Sealing, Sealing coordinates with axle, impeller, and gas flows to low voltage side from high pressure side, during through the first comb structure and the second comb structure, pressure declines gradually, and pressure difference is more and more less, and the air pressure of finally sealed part both sides is tending towards identical, gas flow stops, and reaches sealing effect.By the second comb structure increasing, increase the quantity of broach, improve sealing effect, can reach the object that improves centrifugal compressor energy efficiency coefficient.
The above embodiment has only expressed several mode of execution of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (12)
1. an obturator, is characterized in that: comprise Sealing, be provided with through hole on Sealing;
In the through hole of described Sealing, be provided with the first comb structure distributing along the axial direction of described through hole;
The outer surface of described Sealing is provided with the second comb structure distributing along the axial direction of described through hole.
2. obturator according to claim 1, is characterized in that:
Described the first comb structure is provided with multiple the first broach, and multiple described the first broach become column distribution along the axial direction of described through hole;
Described the second comb structure is provided with multiple the second broach, and multiple described the second broach become column distribution along the axial direction of described through hole.
3. obturator according to claim 2, is characterized in that:
Described the first broach is provided with the first plane of inclination and the second plane of inclination;
There is angle in the radial direction of described the first plane of inclination and described through hole, and described angle is acute angle;
There is angle in the radial direction of described the second plane of inclination and described through hole, and described angle is acute angle or right angle;
Described the second broach is provided with the 3rd plane of inclination and the 4th plane of inclination;
There is angle in the radial direction of described the 3rd plane of inclination and described through hole, and described angle is acute angle;
There is angle in the radial direction of described the 4th plane of inclination and described through hole, and described angle is acute angle or right angle.
4. according to the obturator described in claim 2 or 3, it is characterized in that:
The shape of shape, size and described second broach of described the first broach, measure-alike or different.
5. obturator according to claim 1, is characterized in that:
Also comprise supporting element, described Sealing is arranged on described supporting element;
Described Sealing and described supporting element are integrated or removably connect.
6. a centrifugal compressor, comprises body, impeller, axle, and impeller is arranged on axle, it is characterized in that:
Also comprise the obturator as described in claim 1 to 5 any one;
Described obturator is fixedly mounted on described body, matches with described impeller, axle.
7. centrifugal compressor according to claim 6, is characterized in that:
The first comb structure of described Sealing matches with described axle, forms primary sealing area;
The second comb structure of described Sealing matches with described impeller, forms secondary sealing area.
8. according to centrifugal compressor claimed in claim 7, it is characterized in that:
The first comb structure of described Sealing also matches with described impeller, forms the 3rd sealing surface.
9. centrifugal compressor according to claim 8, is characterized in that:
On described impeller, be provided with the first lug boss and the second lug boss, and described the first lug boss and described the second lug boss formation annular groove;
Described annular groove has the second sidewall, and described the second sidewall matches with described the second comb structure, forms secondary sealing area.
10. centrifugal compressor according to claim 9, is characterized in that:
Described annular groove has the first side wall, and described the first side wall matches with described the first comb structure, forms the 3rd sealing surface.
11. centrifugal compressors according to claim 10, is characterized in that:
Described the first side wall is the circumferential surface that described the first lug boss forms described annular groove;
Described the second sidewall is the circumferential surface that described the second lug boss forms described annular groove.
12. centrifugal compressors according to claim 11, is characterized in that:
The axis of the through hole of described Sealing and the dead in line of described axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044025.7U CN203756586U (en) | 2014-01-23 | 2014-01-23 | Sealing part and centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044025.7U CN203756586U (en) | 2014-01-23 | 2014-01-23 | Sealing part and centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756586U true CN203756586U (en) | 2014-08-06 |
Family
ID=51251868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420044025.7U Expired - Lifetime CN203756586U (en) | 2014-01-23 | 2014-01-23 | Sealing part and centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756586U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100540A (en) * | 2014-08-07 | 2014-10-15 | 珠海格力电器股份有限公司 | Centrifugal compressor and air conditioning system with same |
| CN104806560A (en) * | 2014-01-23 | 2015-07-29 | 珠海格力电器股份有限公司 | Sealing part and centrifugal compressor |
| CN108730222A (en) * | 2017-04-14 | 2018-11-02 | 开利公司 | Seal assembly for centrifugal compressor and the centrifugal compressor with it |
-
2014
- 2014-01-23 CN CN201420044025.7U patent/CN203756586U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806560A (en) * | 2014-01-23 | 2015-07-29 | 珠海格力电器股份有限公司 | Sealing part and centrifugal compressor |
| CN104100540A (en) * | 2014-08-07 | 2014-10-15 | 珠海格力电器股份有限公司 | Centrifugal compressor and air conditioning system with same |
| CN108730222A (en) * | 2017-04-14 | 2018-11-02 | 开利公司 | Seal assembly for centrifugal compressor and the centrifugal compressor with it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |
|
| CX01 | Expiry of patent term |