CN204851760U - Condensate pump sealing ring device - Google Patents
Condensate pump sealing ring device Download PDFInfo
- Publication number
- CN204851760U CN204851760U CN201520405981.8U CN201520405981U CN204851760U CN 204851760 U CN204851760 U CN 204851760U CN 201520405981 U CN201520405981 U CN 201520405981U CN 204851760 U CN204851760 U CN 204851760U
- Authority
- CN
- China
- Prior art keywords
- impeller eye
- sealing ring
- step face
- seal ring
- eye outer
- 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 - Fee Related
Links
- 238000007789 sealing Methods 0.000 title abstract description 16
- 230000004323 axial length Effects 0.000 claims abstract description 4
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a condensate pump sealing ring device comprises sealing ring and impeller eye outer fringe, its characterized in that: the sealing ring for the inside ring that is provided with two -stage step face, the impeller eye outer fringe is for there being the cylindric of two -stage step face, the one -level step face clearance fit of second grade step face and impeller eye outer fringe of sealing ring, the second grade step face clearance fit of its one -level step face and impeller eye outer fringe, the axial annular gap of second grade step face and sealing ring second grade step face of impeller eye outer fringe be 6mm (cyclic annular flash chamber), the axial length of second grade step face of wheel entry outer fringe be 12mm. The utility model has the advantages of simple structure, easy maintenance, what the spillage was few has a few.
Description
Technical field
The utility model relates to water pump vane technical field of sealing technology, specifically a kind of condensate pump seal ring apparatus.
Background technique
In order to reduce the dielectric leakage amount between water pump vane outlet and entrance, generally reducing dynamic and static gaps by installing seal ring and reducing leakage rate.But touch mill to prevent sound, also must ensure that seal ring and impeller eye outer rim have enough safety clearances, the pump discharge pressure that sealing ring gap entrance is corresponding, the pump inlet pressure that sealing ring gap outlet is corresponding, because pressure reduction is between the two larger, causing dielectric leakage amount just large, is the key factor affecting pump efficiency.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and provide a kind of structure simple, good seal, control media leakage rate is not carried out by means of only control sealing ring gap, and the leakage rate reducing medium by reducing medium differential pressure can be realized, make the dielectric leakage amount of seal ring drop to minimum a kind of condensate pump seal ring apparatus.
The utility model for achieving the above object, following technological scheme is adopted to realize, a kind of condensate pump seal ring apparatus, be made up of seal ring and impeller eye outer rim, it is characterized in that: described seal ring is the annulus that inside is provided with two-stage step surface, impeller eye outer rim is have two-stage step surface cylindric; The two stage steps face of described seal ring and the one-level step surface Spielpassung of impeller eye outer rim, the two stage steps face Spielpassung of its one-level step surface and impeller eye outer rim; The two stage steps face of described impeller eye outer rim and the axial annular gap in seal ring two stage steps face are 6mm (ring-type flash chamber); The axial length in the two stage steps face of described wheel entrance outer rim is 12mm.Because condensation pump is vertical pump, condensation pump rotor not the amount of carrying time ensure that axial clearance is about 6mm, the amount of carrying of rotor is 6mm, this ensure that condensation pump runs normal the axial total backlash having 12mm, forms the expansion space of a ring-type.
In order to make better to realize sealing ring gap restriction effect, the inner ring of seal ring can also be processed several roads circular groove.
The principle reducing dielectric leakage amount is, after adding ring-type flash chamber, sealing ring gap entrance with go out interruption-forming two pressure reduction, the pressure reduction namely between sealing ring gap inlet pressure and ring-type flash chamber, the pressure reduction between ring-type flash chamber and sealing ring gap export.Due to ring-type flash chamber and sealing ring gap export between pressure reduction and total pressure head have and significantly reduce, therefore just can achieve and reduce dielectric leakage amount.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
In order to better understand the technical solution of the utility model, describe below in conjunction with accompanying drawing the embodiment that the utility model provides in detail.
A kind of condensate pump seal ring apparatus, is made up of seal ring and impeller eye outer rim, it is characterized in that: described seal ring 1 is the inner annulus being provided with two-stage step surface, and impeller eye outer rim 2 is for there being the cylindric of two-stage step surface; The two stage steps face 4 of described seal ring 1 and the one-level step surface Spielpassung of impeller eye outer rim 2, the two stage steps face Spielpassung of its one-level step surface and impeller eye outer rim 2; The two stage steps face of described impeller eye outer rim 2 and the axial annular gap in seal ring two stage steps face are 6mm (ring-type flash chamber 3); The axial length in the two stage steps face 4 of described wheel entrance outer rim 2 is 12mm.
In order to make better to realize sealing ring gap restriction effect, the inner ring of seal ring can also be processed several roads circular groove.
Claims (2)
1. a condensate pump seal ring apparatus, be made up of seal ring (1) and impeller eye outer rim (2), it is characterized in that: described seal ring (1) is the inner annulus being provided with two-stage step surface, and impeller eye outer rim (2) is for there being the cylindric of two-stage step surface; The two stage steps face (4) of described seal ring (1) and the one-level step surface Spielpassung of impeller eye outer rim (2), the two stage steps face Spielpassung of its one-level step surface and impeller eye outer rim (2); The two stage steps face of described impeller eye outer rim (2) and the axial annular gap in seal ring two stage steps face are 6mm; The axial length in the two stage steps face (4) of described wheel entrance outer rim (2) is 12mm.
2. a kind of condensate pump seal ring apparatus according to claim 1, is characterized in that: the inner ring of described seal ring (1) is provided with one or more circular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520405981.8U CN204851760U (en) | 2015-06-09 | 2015-06-09 | Condensate pump sealing ring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520405981.8U CN204851760U (en) | 2015-06-09 | 2015-06-09 | Condensate pump sealing ring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851760U true CN204851760U (en) | 2015-12-09 |
Family
ID=54742314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520405981.8U Expired - Fee Related CN204851760U (en) | 2015-06-09 | 2015-06-09 | Condensate pump sealing ring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204851760U (en) |
-
2015
- 2015-06-09 CN CN201520405981.8U patent/CN204851760U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20170609 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |