CN101737302A - Seal ring assembly and piston rod seal structure of piston type medium-high pressure compressor - Google Patents
Seal ring assembly and piston rod seal structure of piston type medium-high pressure compressor Download PDFInfo
- Publication number
- CN101737302A CN101737302A CN201010019592A CN201010019592A CN101737302A CN 101737302 A CN101737302 A CN 101737302A CN 201010019592 A CN201010019592 A CN 201010019592A CN 201010019592 A CN201010019592 A CN 201010019592A CN 101737302 A CN101737302 A CN 101737302A
- Authority
- CN
- China
- Prior art keywords
- ring
- seal ring
- piston rod
- ring assembly
- 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.)
- Pending
Links
Images
Landscapes
- Compressor (AREA)
Abstract
The invention discloses a seal ring assembly which is arranged in a stuffing box. The seal ring assembly comprises a seal ring, a seal ring hooping sleeve and a block ring, wherein the seal ring has a V-shaped cross section, the seal lip of the seal ring faces a high-pressure side, the inner hole of the seal ring and a piston rod form an interference fit (for sealing the piston rod), the periphery surface of the seal ring is hooped by the seal ring hooping sleeve, the block ring is positioned at the low-pressure side of the seal ring, and the block ring and the contact surface of the seal ring form a zero-clearance fit. The invention also discloses a piston rod seal structure of a piston type medium-high pressure compressor. The invention has the advantages of simple processing, reasonable structure and excellent sealing effect.
Description
Technical field
The present invention relates to the piston compressor sealing configuration, being specifically related to a kind of ring assembly and piston type mesohigh does not have oil or few oil lubricating compressor piston rod seal.
Background technique
As shown in Figure 1, in the structure of the middle and high pressure compressor packing sealing of existing piston formula, generally comprise the above ring assembly of pressure-reducing ring, one-level or one-level, gas leakage ring member, scraper ring assembly.The structure of ring assemblies at different levels, material are selected and machining accuracy, have determined a whole set of packing seal effect.Conventional ring assembly structure has radial cut ring, butt joint tangential slit ring, bridge-type tangential slit ring etc., the something in common of above ring assembly structure all is made up of two lobes or the little ring more than two lobes, each little ring radially all jagged, performance at material satisfies under the prerequisite of product applying working condition, no matter select the seal ring of above-mentioned which kind of textural association, reason owing to machining accuracy, the planeness of product both ends of the surface, the perpendicularity of faying surface and end face, all there is machining error in the perpendicularity of the dimensional accuracy of endoporus and endoporus and both ends of the surface, so still there is tangible gas leakage situation in gas after by multistage packing seal ring.
This shows that the structure of appropriate design ring assembly has important effect to the sealing effect that improves reciprocal Packings for Non-lubricated Compressor.
Summary of the invention
The present invention provides a kind of processing simple, rational in infrastructure, the extraordinary ring assembly of sealing effect in order to overcome the deficiency that above prior art exists.
Another object of the present invention is to provide a kind of piston type mesohigh compressor piston rod sealing configuration.
Purpose of the present invention realizes by following technological scheme: this ring assembly, be placed in the stuffing box, it is characterized in that: comprise seal ring, seal ring banding cover and block ring, the sectional shape of seal ring is a V-type, the seal lip of seal ring is towards the high pressure side, be interference fit (being used for the packed-piston bar) between the endoporus of seal ring and the piston rod, seal ring banding cover banding is at the outer circumferential face of seal ring, block ring is positioned at the low voltage side of seal ring, and block ring cooperates for no gap with the surface of contact of seal ring.
In order to prevent the positioning of seal ring banding cover, the outer circumferential face of described seal ring has groove, places seal ring banding cover in the groove.
The material selection of each part is as follows:
The material of described seal ring is a filled polytetrafluoroethylene, and the material of seal ring banding cover is metal or high temperature resistant duroplasts, and the material of block ring is Cuprum alloy, polyether-ether-ketone or polyimide.
Piston type mesohigh compressor piston rod sealing configuration, the ring assembly that comprises cylinder, piston rod, flange plate, pressure-reducing ring, scraper ring assembly, gas leakage ring member and some grades, piston rod is arranged in the cylinder, flange plate covers cylinder, the scraper ring assembly is arranged in the flange plate, pressure-reducing ring, some grades ring assembly and the ring member that leaks gas are positioned over cylinder interior successively by stuffing box, be provided with the stuffing box pad between the ring assembly of afterbody and the gas leakage ring member, it is characterized in that: the described ring assembly of one-level at least is above-mentioned ring assembly.
As a kind of preferred structure, described flange plate is connected with cylinder by screw.
As a kind of preferred structure, described ring assembly is total up to 6 grades.
According to actual needs, described afterbody ring assembly is above-mentioned ring assembly, and block ring cooperates for no gap with the surface of contact of stuffing box pad.
According to actual needs, described the 5th grade is above-mentioned ring assembly with the afterbody ring assembly, and block ring cooperates for no gap with the surface of contact of stuffing box pad.
According to actual needs, described the 4th grade, the 5th grade and afterbody ring assembly are above-mentioned ring assembly, and block ring cooperates for no gap with the surface of contact of stuffing box pad.
The material selection of each part is as follows:
The material of described flange plate is a stainless steel, the material of cylinder is middle-carbon steel or alloyed steel, the material of piston rod is 38CrMoAlA, the material of pressure-reducing ring is Cuprum alloy, polyether-ether-ketone or polyimide, the material of gas leakage ring member is polyether-ether-ketone or polyimide, the material of stuffing box pad is a stainless steel, and the material of scraper ring assembly is a Cuprum alloy.
The present invention has following advantage with respect to prior art: this ring assembly and piston type mesohigh compressor piston rod sealing configuration improve existing ring assembly and piston type mesohigh compressor piston rod sealing configuration, have increased the primary seal ring member:
1, this ring assembly improves the structure of existing ring assembly, changes integrated type into by three lobes or the multi-clove type of routine, and leakage path obviously reduces.
2, ring assembly of the present invention, the sectional shape of seal ring is a V-type, the seal lip of seal ring is towards the high pressure side, be interference fit (being used for the packed-piston bar) between the endoporus of seal ring and the piston rod, seal ring banding cover banding is at the outer circumferential face of seal ring, block ring is positioned at the low voltage side of seal ring, block ring cooperates for no gap with the surface of contact of seal ring, block ring cooperates for no gap with the surface of contact of stuffing box pad, brought following advantage: (1), there are certain magnitude of interference in the endoporus of seal ring and the cylindrical of piston rod, and the endoporus and the leakage rate between the piston rod of seal ring are almost nil; (2), block ring cooperates for no gap with the surface of contact of seal ring, block ring cooperates for no gap with the surface of contact of stuffing box pad, the amount of leakage between these two surface of contact is almost nil; (3), the periphery of seal ring increases a seal ring banding cover, effectively prevent because the rising of temperature causes seal ring high temperature and expand laterally that the seal lip size increases, thereby causes seal failure; (4), the processing of a, seal ring is simple, b, seal lip processing are simply, the surface of contact of the surface of contact of c, block ring and seal ring, block ring and stuffing box pad can guarantee planeness and parallelism by accurate abrasive machining, guarantee that leakage is sealed basically fully, reaches good sealing effect.
3, the present invention has advantages such as good sealing effect, long service life, technology capability be good, easy for installation, has good operability and reliability, is very suitable for the sealing of the rod seal afterbody of the middle and high pressure compressor of piston type.
Description of drawings
Fig. 1 is the structural representation of existing ring assembly and piston type mesohigh compressor piston rod sealing configuration.
Fig. 2 is the structural representation of ring assembly of the present invention and piston type mesohigh compressor piston rod sealing configuration.
Fig. 3 is the partial enlarged drawing of the ring assembly of Fig. 2.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Piston type mesohigh compressor piston rod sealing configuration as shown in Figure 2, comprise cylinder 1, piston rod 2, flange plate 3, pressure-reducing ring 4, scraper ring assembly 5, the ring assembly of gas leakage ring member 6 and 6 grades (has comprised preceding 5 grades ring assembly 7-1, the ring assembly 7-2 of afterbody), piston rod 2 is arranged in the cylinder 1, flange plate 3 covers cylinder 1, scraper ring assembly 5 is arranged in the flange plate 3, pressure-reducing ring 4,6 grades ring assembly and gas leakage ring member 6 are positioned over cylinder 1 inside successively by stuffing box 8, are provided with stuffing box pad 9 between the ring assembly 7-2 of afterbody and the gas leakage ring member 6.
As shown in Figure 3, the ring assembly 7-2 of afterbody, be placed in the stuffing box 8, comprise seal ring 10, seal ring banding cover 11 and block ring 12, the sectional shape of seal ring 10 is a V-type, the seal lip 13 of seal ring 10 is towards the high pressure side, be that (seal lip 13 is in assembling for interference fit between the endoporus of seal ring 10 and the piston rod 2, produce extrusion-deformation outward, form certain magnitude of interference, be used to seal the AB face), the seal ring banding overlaps the outer circumferential face of 11 bandings at seal ring 10, block ring 12 is positioned at the low voltage side of seal ring 10, and block ring 12 cooperates for no gap with the surface of contact (CD face) of seal ring 10, and block ring 12 cooperates for no gap with the surface of contact (EF face) of stuffing box pad 9.
In order to prevent that the seal ring banding from overlapping 11 positionings, the outer circumferential face of seal ring 10 has groove, places seal ring banding cover 11 in the groove.
The material selection of each part is as follows:
The material of described flange plate is a stainless steel, the material of cylinder is middle-carbon steel or alloyed steel, the material of piston rod is 38CrMoAlA, the material of pressure-reducing ring is Cuprum alloy, polyether-ether-ketone or polyimide, the material of gas leakage ring member is polyether-ether-ketone or polyimide, the material of stuffing box pad is a stainless steel, and the material of scraper ring assembly is a Cuprum alloy.
The material of described seal ring is a filled polytetrafluoroethylene, and the material of seal ring banding cover is metal or high temperature resistant duroplasts, and the material of block ring is Cuprum alloy, polyether-ether-ketone or polyimide.
The working principle of present embodiment is as follows:
After the pressure-reducing ring 4 of pressurized gas process Fig. 2 of cylinder side and the decompression of 5 grades of ring assembly 7-1, pressure obviously reduces, in becoming, low-pressure gas directly enters between the endoporus of ring assembly 7-2 of the piston rod 2 of Fig. 3 and afterbody, because between the cylindrical of piston rod 2 and the seal lip 13 of seal ring 10 is interference fit, the A face of the B face of cylindrical that gas can't be by piston rod 2 and the seal lip 13 of seal ring 10, so gas and changing direction, the end face of process seal ring 10 enters the zone between seal ring banding cover 11 and afterbody stuffing box 9 endoporus, but, because C, D, E, four planes of F can guarantee planeness and parallelism by accurate abrasive machining, block ring 12 cooperates for no gap with the surface of contact (CD face) of seal ring 10, block ring 12 cooperates for no gap with the surface of contact (EF face) of stuffing box pad 9, gas can't leak by the CD face, also can't leak by the EF face, therefore, the leakage of gas is sealed basically fully, gas can't leak by ring assembly 7-2, ring assembly 7-2 sealing effect of the present invention improves greatly than existing ring assembly, and processing technology is simplified greatly.
Above-mentioned embodiment is the preferred embodiments of the present invention, can not limit the present invention, and other any change or other equivalent substitute mode that does not deviate from technological scheme of the present invention and made is included within protection scope of the present invention.
Claims (10)
1. ring assembly, be placed in the stuffing box, it is characterized in that: comprise seal ring, seal ring banding cover and block ring, the sectional shape of seal ring is a V-type, the seal lip of seal ring is interference fit between the endoporus of seal ring and the piston rod towards the high pressure side, and seal ring banding cover banding is at the outer circumferential face of seal ring, block ring is positioned at the low voltage side of seal ring, and block ring cooperates for no gap with the surface of contact of seal ring.
2. ring assembly according to claim 1 is characterized in that: the outer circumferential face of described seal ring has groove, places seal ring banding cover in the groove.
3. ring assembly according to claim 1 is characterized in that: the material of described seal ring is a filled polytetrafluoroethylene, and the material of seal ring banding cover is metal or high temperature resistant duroplasts, and the material of block ring is Cuprum alloy, polyether-ether-ketone or polyimide.
4. piston type mesohigh compressor piston rod sealing configuration, comprise cylinder, piston rod, flange plate, pressure-reducing ring, the scraper ring assembly, the ring assembly of gas leakage ring member and some grades, piston rod is arranged in the cylinder, flange plate covers cylinder, the scraper ring assembly is arranged in the flange plate, pressure-reducing ring, some grades ring assembly and gas leakage ring member are positioned over cylinder interior successively by stuffing box, be provided with the stuffing box pad between the ring assembly of afterbody and the gas leakage ring member, it is characterized in that: the described ring assembly of one-level at least is the described ring assembly of claim 1.
5. piston type mesohigh compressor piston rod sealing configuration according to claim 4, it is characterized in that: described flange plate is connected with cylinder by screw.
6. piston type mesohigh compressor piston rod sealing configuration according to claim 4, it is characterized in that: described ring assembly is total up to 6 grades.
7. piston type mesohigh compressor piston rod sealing configuration according to claim 6 is characterized in that: described afterbody ring assembly is the described ring assembly of claim 1, and block ring cooperates for no gap with the surface of contact of stuffing box pad.
8. piston type mesohigh compressor piston rod sealing configuration according to claim 6, it is characterized in that: described the 5th grade is the described ring assembly of claim 1 with the afterbody ring assembly, and block ring cooperates for no gap with the surface of contact of stuffing box pad.
9. piston type mesohigh compressor piston rod sealing configuration according to claim 6, it is characterized in that: described the 4th grade, the 5th grade and afterbody ring assembly are the described ring assembly of claim 1, and block ring cooperates for no gap with the surface of contact of stuffing box pad.
10. according to each described piston type mesohigh compressor piston rod sealing configuration of claim 4～9, it is characterized in that: the material of described flange plate is a stainless steel, the material of cylinder is middle-carbon steel or alloyed steel, the material of piston rod is 38CrMoAlA, the material of pressure-reducing ring is Cuprum alloy, polyether-ether-ketone or polyimide, the material of gas leakage ring member is polyether-ether-ketone or polyimide, and the material of stuffing box pad is a stainless steel, and the material of scraper ring assembly is a Cuprum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010019592A CN101737302A (en) | 2010-01-22 | 2010-01-22 | Seal ring assembly and piston rod seal structure of piston type medium-high pressure compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010019592A CN101737302A (en) | 2010-01-22 | 2010-01-22 | Seal ring assembly and piston rod seal structure of piston type medium-high pressure compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101737302A true CN101737302A (en) | 2010-06-16 |
Family
ID=42461213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010019592A Pending CN101737302A (en) | 2010-01-22 | 2010-01-22 | Seal ring assembly and piston rod seal structure of piston type medium-high pressure compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101737302A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536743A (en) * | 2012-03-12 | 2012-07-04 | 江苏锡压石化装备有限公司 | Two-way sealing structure for industrial vertical reciprocating compressor |
| CN104847688A (en) * | 2014-02-19 | 2015-08-19 | 霍尼韦尔国际公司 | Sealing arrangement for fuel cell compressor |
| CN108474480A (en) * | 2015-10-07 | 2018-08-31 | 阿特拉斯·科普柯空气动力股份有限公司 | Method for installing speed changer and the shaft seal applied |
-
2010
- 2010-01-22 CN CN201010019592A patent/CN101737302A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536743A (en) * | 2012-03-12 | 2012-07-04 | 江苏锡压石化装备有限公司 | Two-way sealing structure for industrial vertical reciprocating compressor |
| CN102536743B (en) * | 2012-03-12 | 2014-07-30 | 江苏锡压石化装备有限公司 | Two-way sealing structure for industrial vertical reciprocating compressor |
| CN104847688A (en) * | 2014-02-19 | 2015-08-19 | 霍尼韦尔国际公司 | Sealing arrangement for fuel cell compressor |
| CN104847688B (en) * | 2014-02-19 | 2019-05-07 | 盖瑞特交通一公司 | Sealing device for fuel cell compressors |
| CN108474480A (en) * | 2015-10-07 | 2018-08-31 | 阿特拉斯·科普柯空气动力股份有限公司 | Method for installing speed changer and the shaft seal applied |
| US10982749B2 (en) | 2015-10-07 | 2021-04-20 | Atlas Copco Airpower, Naamloze Vennootschap | Method for installing a transmission and shaftseat applied thereby |
| US11460100B2 (en) | 2015-10-07 | 2022-10-04 | Atlas Copco Airpower, Naamloze Vennootschap | Method for installing a transmission and shaftseat applied thereby |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203717926U (en) | Sealing assembly | |
| US9933071B2 (en) | Seal and method of manufacturing and/or using same | |
| EP3517807B1 (en) | Single seal ring stuffing box | |
| CN103917809B (en) | Hydraulic pressure cylinder assembly | |
| CN102549317B (en) | Cylinder head gasket | |
| JP4873173B2 (en) | Sealing device | |
| CN201043606Y (en) | Packing seal structure for high-pressure gas | |
| CN203892237U (en) | Mechanical sealing device used for hydrodynamic turbine | |
| CN103968074A (en) | Middle flange sealing structure of high-pressure valve | |
| US9347333B2 (en) | Brush ring seal | |
| CN101737302A (en) | Seal ring assembly and piston rod seal structure of piston type medium-high pressure compressor | |
| CN103939607A (en) | Integrated shaft end sealing device | |
| CN101418790A (en) | Adjacent cylinder sealing device for gradation type reciprocating compressor or expansion machine | |
| CN201606217U (en) | Seal ring assembly and seal structure of piston rod of piston type medium-high pressure compressor | |
| US9482344B2 (en) | Arrangement with a radial shaft seal having a sinusoidally curved sealing edge | |
| US2049955A (en) | Shaft seal | |
| CN101660515B (en) | Sealing structure of piston rod of piston type intermediate-pressure and high-pressure compressor | |
| CN203363518U (en) | Bellows valve rod assembly for regulating valve | |
| CA3078031A1 (en) | Annular sealing assembly | |
| CN2825960Y (en) | Stack type sealing apparatus with steam leakage preventing function for high pressure internal and external cylinders of steam turbine | |
| CN101985922A (en) | Oil-free lubrication reciprocating compressor packing box | |
| CN203809682U (en) | Middle flange sealing structure of high-pressure valve | |
| CN204420106U (en) | A kind of bicircular arcs lip-type packing | |
| CN103388580A (en) | Split type mechanical seal and double-screw pump with same | |
| CN207161711U (en) | A kind of vertical shaft protection end cap of cement powder separator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100616 |