CN203214887U - Mechanical seal static ring end face high pressure resistant dynamic pressure groove structure for pump - Google Patents
Mechanical seal static ring end face high pressure resistant dynamic pressure groove structure for pump Download PDFInfo
- Publication number
- CN203214887U CN203214887U CN 201320183914 CN201320183914U CN203214887U CN 203214887 U CN203214887 U CN 203214887U CN 201320183914 CN201320183914 CN 201320183914 CN 201320183914 U CN201320183914 U CN 201320183914U CN 203214887 U CN203214887 U CN 203214887U
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- China
- Prior art keywords
- face
- ring end
- high pressure
- static ring
- mechanical seal
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model provides a mechanical seal static ring end face high pressure resistant dynamic pressure groove structure for a pump. The mechanical seal static ring end face high pressure resistant dynamic pressure groove structure is characterized in that an annular groove (A) is formed in a static ring end face, and opened arc grooves (B) are evenly formed in the outer circle portion of the static ring end face. The mechanical seal static ring end face high pressure resistant dynamic pressure groove structure is easy and convenient to machine, good in hydrodynamic effect and reverse pumping effect, capable of being used in a bidirectional rotating mode, good in lubricating performance and sealing performance, and capable of bearing 18MPa and working stably under high pressure, and the leakage rate is 2-5ml/h.
Description
Technical field
The utility model relates to the end face dynamic pressure groove structure of mechanical sealing static ring, especially for the stationary ring end face dynamic pressure groove structure of high pressure petrol and diesel oil oil transportation mechanical sealing device used for pump.
Background technique
Offer groove on the end face of the rotating ring of mechanical seal device frictional fit or stationary ring; produce the hydrodynamic effect; the frictional fit end face that makes gas or liquid medium enter rotating ring and stationary ring forms gas mould or liquid film; making rotating ring and stationary ring form non-contact coordinates; greatly reduce the frictional heat of end face; play effect lubricated and that increase the service life, can prevent that again sealed liquid medium from, by the frictional fit face leakage of rotating ring and stationary ring, reaching sealing purpose simultaneously.
Offer the dynamic pressure groove of superperformance on abrasive end face, can effectively improve the performance of frictional fit face.Chinese patent CN981035752, CN011022132, CN03234764.2, CN101493146 B are disclosed is exactly this technology.Prior art dynamic pressure groove shape is offered difference, is adapted to medium operating mode difference, and its characteristic of property is also different.Offering of dynamic pressure groove not only will have shape preferably to improve dynamic pressure effect and adverse current pumping effect, also will be beneficial to manufacturing.
The model utility content
The purpose of this utility model is to provide a kind of easy to process, dynamic pressure effect and backwash effect are good, end face seal is reliable, stable, leakage rate is little, but the high-performance mechanical stationary seal ring end face that bidirectional rotation is used, particularly be applicable to the high pressure resistant end face dynamic pressure groove of the stationary ring structure of high pressure oil transportation mechanical sealing device used for pump.
The high pressure resistant dynamic pressure groove structure of the utility model mechanical seal for pump stationary ring end face
,offer toroidal cavity A and be uniformly distributed and offer open type arc groove B in stationary ring end face cylindrical section on the stationary ring end face, the structural parameter that toroidal cavity A and open type arc groove B offer are as follows:
φ3=（φ2+φ4）/2；
φ4=φ2+（φ5-φ1）×(0.2～0.25)
φ5=φ1+（14～18）；
φ d=π * φ 5 * 0.15/N, and φ d and φ 3 tangent;
H=1.5～2mm；
Wherein:
φ 1-stationary ring abrasive end face internal diameter;
φ 2-toroidal cavity A internal diameter;
φ 3-toroidal cavity A center circle diameter;
φ 4-toroidal cavity A external diameter;
φ 5-stationary ring abrasive end face external diameter;
φ d-open type arc groove B diameter;
K-machinery end-blocking face balance coefficient=0.8～0.85;
N-open type arc groove B quantity=4-8;
The groove depth of H-open type arc groove B and toroidal cavity A.
The utility model processing is simple and convenient, dynamic pressure effect and adverse current pumping effect are good, the end face seal good stability, but bidirectional rotation is used, after two abrasive end faces turn round relatively, medium enters toroidal cavity A by open type arc groove B, a plurality of equally distributed carrying end face E surround in immersion in medium, can make the homogeneous media infiltration, permeation due to medium, in the end face rotary course, fully in contactless state, make end face that lubricity preferably be arranged, not there will be unbalance stress to cause the face deformation phenomenon.Radially pressure-bearing is born by continuous end face G, because G is the continuous annular end face, so have, reduces preferably the effect of leaking.Because face pressure is born jointly by end face G and E, and end face E is in contactless state, this just greatly reduces the thrust load of end face G, and slightly floated by the thrust end face G of end face E, make medium be easier to be deep into end face G inside, end face G is played to the reinforcement lubrication, play and reduce G face pressure effect.This end face has lubricity and sealing, seal operation stability preferably, can bear stable operation under the 18MPa high pressure, and end-face friction heat is little, consumed power is low, leakage rate is low, leakage rate 2-5ml/h is less than common non-fluting end face seal, and can be stable for high pressure petrol and diesel oil operating mode.
The accompanying drawing explanation
Fig. 1 is the utility model example structure schematic diagram.
Fig. 2 is the D-D sectional view of Fig. 1.
Fig. 3 is the K-K sectional view of Fig. 1.
Embodiment
The high pressure resistant dynamic pressure groove structure of the utility model mechanical sealing static ring end face
,offer toroidal cavity A and be uniformly distributed and offer open type arc groove B in stationary ring end face cylindrical section on the stationary ring end face, the structural parameter that toroidal cavity A and open type arc groove B offer are as follows:
φ3=（φ2+φ4）/2；
φ4=φ2+（φ5-φ1）×(0.2～0.25)
φ5=φ1+（14～18）；
φ d=π * φ 5 * 0.15/N, and φ d and φ 3 tangent;
H=1.5～2mm；
Wherein:
φ 1-stationary ring abrasive end face internal diameter;
φ 2-toroidal cavity A internal diameter;
φ 3-toroidal cavity A center circle diameter;
φ 4-toroidal cavity A external diameter;
φ 5-stationary ring abrasive end face external diameter;
φ d-open type arc groove B diameter;
K-machinery end-blocking face balance coefficient=0.8～0.85;
N-open type arc groove B quantity=4～8;
The groove depth of H-open type arc groove B and toroidal cavity A.
Mechanical seal specification: kinetic friction ring slippage diameter 90mm.
Medium operating mode: diesel oil, 80 ~ 100 ℃ of temperature, pressure 0-18MPa, rotating speed: 3000r/min.Under setting pressure, continuous operation is more than 100 hours, and its result is:
When pressure is 0-5MPa without visible leakage;
Leakage rate 1-2ml/h when pressure is 5-10MPa;
Leakage rate 2-5ml/h when pressure is 10-18MPa;
Under above operating mode, turn round, mechanical seal end surface is all without the noticeable wear vestige, between end face in contactless state.
Leakage rate GB standard is: 3-5ml/h, face leakage amount of the present invention meets the GB standard
.
Claims (1)
1. the high pressure resistant dynamic pressure groove structure of mechanical seal for pump stationary ring end face
,it is characterized in that, offer toroidal cavity (A) and be uniformly distributed and offer open type arc groove (B) in stationary ring end face cylindrical section on the stationary ring end face, the structural parameter that toroidal cavity (A) and open type arc groove (B) are offered are as follows:
φ3=（φ2+φ4）/2；
φ4=φ2+（φ5-φ1）×(0.2～0.25)
φ5=φ1+（14～18）；
φ d=π * φ 5 * 0.15/N, and φ d and φ 3 tangent;
H=1.5～2mm；
Wherein:
φ 1-stationary ring abrasive end face internal diameter;
φ 2-toroidal cavity (A) internal diameter;
φ 3-toroidal cavity (A) circle diameter;
φ 4-toroidal cavity (A) external diameter;
φ 5-stationary ring abrasive end face external diameter;
φ d-open type arc groove (B) diameter;
K-machinery end-blocking face balance coefficient=0.8～0.85;
N-open type arc groove (B) quantity=4-8;
The groove depth of H-open type arc groove (B) and toroidal cavity A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320183914 CN203214887U (en) | 2013-04-13 | 2013-04-13 | Mechanical seal static ring end face high pressure resistant dynamic pressure groove structure for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320183914 CN203214887U (en) | 2013-04-13 | 2013-04-13 | Mechanical seal static ring end face high pressure resistant dynamic pressure groove structure for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203214887U true CN203214887U (en) | 2013-09-25 |
Family
ID=49204426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320183914 Withdrawn - After Issue CN203214887U (en) | 2013-04-13 | 2013-04-13 | Mechanical seal static ring end face high pressure resistant dynamic pressure groove structure for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203214887U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234047A (en) * | 2013-04-13 | 2013-08-07 | 丹东克隆集团有限责任公司 | End face high-pressure-resistant dynamic-pressure groove structure of mechanical seal static ring for pump |
-
2013
- 2013-04-13 CN CN 201320183914 patent/CN203214887U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234047A (en) * | 2013-04-13 | 2013-08-07 | 丹东克隆集团有限责任公司 | End face high-pressure-resistant dynamic-pressure groove structure of mechanical seal static ring for pump |
| CN103234047B (en) * | 2013-04-13 | 2015-12-30 | 丹东克隆集团有限责任公司 | The high pressure resistant dynamic pressure groove structure of mechanical seal for pump stationary ring end face |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130925 Effective date of abandoning: 20151230 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |