CN206723001U - A kind of sealing structure of gas compressor - Google Patents
A kind of sealing structure of gas compressor Download PDFInfo
- Publication number
- CN206723001U CN206723001U CN201720329256.6U CN201720329256U CN206723001U CN 206723001 U CN206723001 U CN 206723001U CN 201720329256 U CN201720329256 U CN 201720329256U CN 206723001 U CN206723001 U CN 206723001U
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- China
- Prior art keywords
- seal ring
- labyrinth
- gas
- labyrinth seal
- backup
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A kind of sealing structure of gas compressor, it is characterised in that：Including some groups of labyrinth seal rings and backup seal ring, labyrinth seal ring and the backup seal ring is fixed on the casing wall of gas compressor, inner surface is engaged with piston, and a gas recovery holes are provided between labyrinth seal ring and backup seal ring, and the gas recovery holes are connected with air inlet side.This programme realizes combination sealing function by the combination of labyrinth filler and conventional fillers.By being connected with one-level entrance, the pressure difference for being sealed obstruction filler substantially reduces, and is exactly one-level inlet pressure equivalent to the pressure before conventional fillers, that is, reduces pressure differential to reduce leakage rate, and sealing effectiveness greatly improves.The portion gas of leakage is also back to one-level entrance simultaneously, leakage rate is not only reduced, the degree of purity of air inlet can also be increased.
Description
Technical field
The utility model belongs to the technical field of structures for being related to gas compressor, and in particular on a kind of gas compressor
Sealing structure, sealing is realized using combined stuffing.
Background technology
Reciprocating-piston compressor is by convert rotational motion linear reciprocating motion, changes working chamber volume, realizes medium pressure
Contracting, obtain the process of required pressure.And filler is one of compressor important component, to sealing cylinder mesohigh gas along piston
The external leakage of bar.Filler is to obtain self-tightening sealing by means of the pressure differential of gas.In labyrinth compressor, packing sealing ring
It is to reach vacuum-packed by the swirl principle of maze trough, but in the case where pressure is higher, it may appear that it is more serious
Leakage problem, this is always to perplex the problem of our compressor design personnel.
Utility model content
The purpose of this utility model is：A kind of sealing structure of gas compressor is provided, it is big to solve high pressure filling leakage rate
The problem of, and it is compact-sized, reliability is high.
The utility model is achieved by the following technical solution：A kind of sealing structure of gas compressor, its feature exist
In：Including some groups of labyrinth seal rings and backup seal ring, labyrinth seal ring and the backup seal ring is fixed on gas compression
On the casing wall of machine, inner surface is engaged with piston, and a gas recovery holes, institute are provided between labyrinth seal ring and backup seal ring
Gas recovery holes are stated with air inlet side to be connected.
Further：Maze trough is provided with the inner surface of labyrinth seal ring.
Further：The labyrinth seal ring is located at high-pressure side, and the backup seal ring is located at low-pressure side.
Further：Recirculated water is connected with inside labyrinth seal ring and/or the backup seal ring.
The beneficial effects of the utility model are：This programme realizes that combination is close by the combination of labyrinth filler and conventional fillers
Seal function.By being connected with one-level entrance, the pressure difference for being sealed obstruction filler substantially reduces, equivalent to the pressure before conventional fillers
Power is exactly one-level inlet pressure, that is, reduces pressure differential to reduce leakage rate, and sealing effectiveness greatly improves.Simultaneously also leakage
Portion gas be back to one-level entrance, not only reduce leakage rate, the degree of purity of air inlet can also be increased.
Brief description of the drawings
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is labyrinth seal ring structural representation；
Fig. 3 is backup seal ring structure schematic diagram.
Number explanation in figure：1 be labyrinth seal ring, 2 be backup seal ring, 3 be casing wall, 4 be piston rod, 5 be gas return
Batter, 6 be maze trough, 7 be circulating water cavity.
Embodiment
It is a kind of sealing structure of gas compressor of the utility model as Figure 1-3, including some groups of labyrinth seal rings
1 and backup seal ring 2, labyrinth seal ring and the backup seal ring gas compression is fixed on by clamping or other existing ways
On the casing wall 3 of machine, inner surface is engaged with piston rod 4, and one is provided with the casing wall between labyrinth seal ring and backup seal ring
Gas recovery holes 5, the gas recovery holes are connected with air inlet side.
Preferably：Maze trough 6 is provided with the inner surface of labyrinth seal ring.
Preferably：The labyrinth seal ring is located at high-pressure side, and the backup seal ring is located at low-pressure side.
Preferably：Circulating water cavity 7 is provided with inside labyrinth seal ring and/or the backup seal ring, recirculated water is connected with, is used for
Cool down piston and piston rod.
The principle and advantage of the utility model structure are as follows：The sealing of this structure is divided into two sections, respectively labyrinth seal and
Backup seal two parts, all it is made up of some groups of sealing rings, labyrinth seal ring material is graphite, and backup seal ring material is alloy
Iron.Cooling water cavity is inside set to reduce the temperature of piston rod.There is small gap between labyrinth seal ring and piston rod, its inwall is provided with
Maze trough, it is that sealing function is reached by the throttling to gas.There is gas time together between labyrinth filler and conventional fillers
Interface is received, the leakage gas backstreaming by labyrinth seal ring throttling to one-level entrance.
According to the aleakage formula of filler gas：
V≈2600
--- the radial clearance (centimetre) between potted component inner surface and piston rod
D --- diameter of piston rod (centimetre)
Δ p --- gas pressure difference (kilogram second/rice before and after potted component2)
--- aerodynamic force viscosity (kilograms per centimeter2)
The length (centimetre) of l --- potted component
In gapAccomplish sufficiently small and potted component length l accomplish it is sufficiently long in the case of, think further to reduce gas
The most effective method of the leakage rate of body, exactly reducesNamely pressure difference before and after potted component.This programme is exactly to use this
One theory, the pressure difference before and after conventional fillers potted component is reduced further to subtract by the combination of labyrinth filler and conventional fillers
Small leak amount.One-level entrance can be back to reduce leakage rate the portion gas of leakage by so doing, and can also be passed through
The pressure difference that being connected with one-level entrance is sealed obstruction filler substantially reduces, and is exactly that one-level enters equivalent to the pressure before conventional fillers
Mouth pressure, that is, reduce pressure differential to reduce leakage rate.
Filler will ensure accurate machining accuracy during processing.Particularly labyrinth seal ring inner surface is provided with labyrinth
Groove, labyrinth rooved face and end flat, cut sealing face should be without scars, slight crack, and loose the defects of waiting influence intensity, both ends of the surface are not
Allow have the defects of any influence sealing property, corner angle rounding, inner surface groove is screw thread spin slot, and the processing of other parts also will
Done in strict accordance with the requirement of part drawing.
Claims (4)
- A kind of 1. sealing structure of gas compressor, it is characterised in that：Including some groups of labyrinth seal rings and backup seal ring, institute State labyrinth seal ring and backup seal ring is fixed on the casing wall of gas compressor, inner surface is engaged with piston, close in labyrinth A gas recovery holes are provided between seal ring and backup seal ring, the gas recovery holes are connected with air inlet side.
- 2. sealing structure according to claim 1, it is characterised in that：Maze trough is provided with the inner surface of labyrinth seal ring.
- 3. sealing structure according to claim 1 or 2, it is characterised in that：The labyrinth seal ring is located at high-pressure side, described Backup seal ring is located at low-pressure side.
- 4. sealing structure according to claim 1 or 2, it is characterised in that：Labyrinth seal ring and/or the backup seal ring Inside is connected with recirculated water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720329256.6U CN206723001U (en) | 2017-03-31 | 2017-03-31 | A kind of sealing structure of gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720329256.6U CN206723001U (en) | 2017-03-31 | 2017-03-31 | A kind of sealing structure of gas compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206723001U true CN206723001U (en) | 2017-12-08 |
Family
ID=60503472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720329256.6U Active CN206723001U (en) | 2017-03-31 | 2017-03-31 | A kind of sealing structure of gas compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206723001U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538451A (en) * | 2019-01-14 | 2019-03-29 | 沈阳远大压缩机有限公司 | The hydraulic guiding of super-pressure diaphragm type compressor seals film head |
-
2017
- 2017-03-31 CN CN201720329256.6U patent/CN206723001U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538451A (en) * | 2019-01-14 | 2019-03-29 | 沈阳远大压缩机有限公司 | The hydraulic guiding of super-pressure diaphragm type compressor seals film head |
| CN109538451B (en) * | 2019-01-14 | 2024-03-26 | 沈阳远大压缩机有限公司 | Hydraulic guide type sealing membrane head of ultrahigh pressure diaphragm compressor |
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