CN203702645U - Sealing system for gap of centrifugal compressor - Google Patents
Sealing system for gap of centrifugal compressor Download PDFInfo
- Publication number
- CN203702645U CN203702645U CN201420095615.2U CN201420095615U CN203702645U CN 203702645 U CN203702645 U CN 203702645U CN 201420095615 U CN201420095615 U CN 201420095615U CN 203702645 U CN203702645 U CN 203702645U
- Authority
- CN
- China
- Prior art keywords
- gap
- static element
- rotating component
- composite material
- piece
- 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 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 230000003068 static effect Effects 0.000 claims description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 abstract 3
- 239000000463 material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a sealing system for a gap of a centrifugal compressor. The gap is provided with a rotary piece and a stationary piece, wherein the rotary piece comprises a rotary surface which has sharp teeth at the outer circle, the stationary piece is cylinder-shaped and is made of the existing metal matrix self-lubricating composite material or inorganic non-metal-matrix self-lubricating composite material, and the gap between the outer tooth of the rotary piece and the stationary piece is less than or equal to 0.05 millimeters; when the inorganic non-metal-matrix self-lubricating composite material is graphite-base self-lubricating composite material, the initial gap between the outer tooth of the rotary piece and the stationary piece is 0 before the rotation of the rotary piece. By means of the technical scheme, the gap between the outer tooth of the rotary piece and the stationary piece can be controlled to a small value, for example, the radius gap is less than or equal to 0.05 millimeters.
Description
Technical field
The utility model belongs to centrifugal compressor field, relates to especially a kind of sealing system for centrifugal compressor gap location.
background technique
The sealing system that place, tradition centrifugal compressor gap adopts is traditional labyrinth mode: the rotating component of gap location adopts straight cylindrical surfaces or ladder cylndrical surface, the static element of gap location adopts softer metals (as aluminium, copper etc.) or nonmetallic material (as SF4), wipe and touch the static element that causes and the damage of rotating component because of vibration and static element for reducing rotating component when work, the approaching static element of sealing place and rotating component is processed to pointed tooth and also and between rotating component retains certain distance (being called sealing radius clearance, generally between 0.2 ~ 0.5mm).The in the situation that before and after sealing, pressure reduction and seal length being certain, the size of seal clearance has determined seal leakage amount.Greatly seal leakage amount of seal clearance is large, and further, along with machine lengthens working time, the vibration of rotating component can cause sealing wear, gap further to be strengthened, and the leakage rate of sealing increases thereupon, causes efficiency and the hydraulic performance decline of unit.At present, also there is no the effective solution for this problem.
model utility content
For solving the problems of the technologies described above, the utility model provides a kind of sealing system for centrifugal compressor gap location, described gap location comprises rotating component and static element, it is characterized in that: described rotating component has the turning surface of outer round belt pointed tooth, described static element is static element columnar, that adopt metal-based self-lubricating composite material or inorganic non-metallic based self lubricated composite material, and the gap between external tooth and the static element of described rotating component is less than or equal to 0.05mm; And: in the time that static element adopts described inorganic non-metallic based self lubricated composite material and is graphite-based self-lubricating composite, before described rotating component rotates, the primary clearance between external tooth and the static element of rotating component is 0.
By the technical solution of the utility model, the gap between external tooth and the static element of rotating component can control to very fractional value, is less than or equal to 0.05mm such as radius clearance can control to.If further adopt the static element of graphite-based self-lubricating composite, the initial value of seal clearance can be even 0 so, because the pointed tooth of rotating component can carve ring-like groove to the static element of this flexible material at the initial stage of operation, and along with the unit operation time lengthens and rotor oscillation increase, the annular groove degree of depth can strengthen thereupon, more stable and can guarantee that the gap of normal work can produce thereupon, but the leakage rate of sealing can't obviously increase, and obviously extend the working life of sealing.
accompanying drawing explanation
Fig. 1 is the schematic diagram shown in an embodiment in the utility model;
Wherein, reference character 1 is rotating component, and 2 is static element.
Embodiment
Concrete, in one embodiment, the utility model discloses a kind of sealing system for centrifugal compressor gap location, described gap location comprises rotating component and static element, it is characterized in that: described rotating component has the turning surface of outer round belt pointed tooth, described static element is static element columnar, that adopt metal-based self-lubricating composite material of the prior art or inorganic non-metallic based self lubricated composite material.
With regard to this embodiment, what static element adopted is two kinds of self-lubricating composites of the prior art, does not adopt any new material, so above-described embodiment does not relate to the feature of the aspect of material own.Just because of the existence of columnar this static element, due to good selflubricating feature, so rotating component can be accomplished very little gap with static element.
In another embodiment: the gap between external tooth and the static element of described rotating component is less than or equal to 0.05mm.
With regard to this embodiment, its gap is with respect to the gap of the 0.5mm of traditional labyrinth form, can reach its gap 1/10th even below.
In another embodiment: described inorganic non-metallic based self lubricated composite material is graphite-based self-lubricating composite, and before described rotating component rotates, the primary clearance between external tooth and the static element of rotating component is 0.This is because the pointed tooth of rotating component can carve ring-like groove to the static element of this flexible material at the initial stage of operation, and along with the unit operation time lengthens and rotor oscillation increase, the annular groove degree of depth can strengthen thereupon, more stable and can guarantee that the gap of normal work can produce thereupon, but the leakage rate of sealing can't obviously increase, and obviously extend the working life of sealing.
Above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiments, but not in order to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when can utilizing the method for above-mentioned announcement and technology contents to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, foundation technical spirit of the present utility model is to any simple modification made for any of the above embodiments, equivalent variations and modification, still belong in the scope of technical solutions of the utility model.
Claims (1)
1. the sealing system for centrifugal compressor gap location, described gap location comprises rotating component and static element, it is characterized in that: described rotating component has the turning surface of outer round belt pointed tooth, described static element is static element columnar, that adopt metal-based self-lubricating composite material or inorganic non-metallic based self lubricated composite material, and the gap between external tooth and the static element of described rotating component is less than or equal to 0.05mm; And: in the time that static element adopts described inorganic non-metallic based self lubricated composite material and is graphite-based self-lubricating composite, before described rotating component rotates, the primary clearance between external tooth and the static element of rotating component is 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420095615.2U CN203702645U (en) | 2014-03-02 | 2014-03-02 | Sealing system for gap of centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420095615.2U CN203702645U (en) | 2014-03-02 | 2014-03-02 | Sealing system for gap of centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702645U true CN203702645U (en) | 2014-07-09 |
Family
ID=51053096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420095615.2U Expired - Fee Related CN203702645U (en) | 2014-03-02 | 2014-03-02 | Sealing system for gap of centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702645U (en) |
-
2014
- 2014-03-02 CN CN201420095615.2U patent/CN203702645U/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: 20140709 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |