CN103147960A - Compressor with dual-chamber oil-scraping device - Google Patents

Compressor with dual-chamber oil-scraping device Download PDF

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Publication number
CN103147960A
CN103147960A CN2013101026752A CN201310102675A CN103147960A CN 103147960 A CN103147960 A CN 103147960A CN 2013101026752 A CN2013101026752 A CN 2013101026752A CN 201310102675 A CN201310102675 A CN 201310102675A CN 103147960 A CN103147960 A CN 103147960A
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CN
China
Prior art keywords
oil
ring
scraper
scraping
rings
Prior art date
Application number
CN2013101026752A
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Chinese (zh)
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CN103147960B (en
Inventor
刘耿亮
曾宪山
余秀琴
刘明海
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江西气体压缩机有限公司
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Priority to CN201310102675.2A priority Critical patent/CN103147960B/en
Publication of CN103147960A publication Critical patent/CN103147960A/en
Application granted granted Critical
Publication of CN103147960B publication Critical patent/CN103147960B/en

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Abstract

The invention discloses a compressor with a dual-chamber oil-scraping device. A gland and an oil baffle plate are fixed on an oil-scraping box, a spacer ring is used for partitioning the oil-scraping box into a left oil-scraping cavity and a right oil-scraping to form two chambers, the right oil-scraping cavity comprises more than two groups of iron based oil-scraping rings, the left oil-scraping cavity comprises two groups of copper based oil-scraping rings and one group of sealing rings, and the sealing rings, the copper based oil-scraping rings, a portioning plate I, the spacer ring, the partitioning plate II, the iron based oil-scraping rings, the gland and the oil baffle plate are sleeved on a piston rod. Lubricating oil attached on the piston rod at a slide of a crosshead can be scraped thoroughly by the more than two groups of iron based oil-scraping rings, the two groups of copper based oil-scraping rings, the one group of sealing rings, the portioning plate I and the spacer ring; and by combining with a reverse blowing by-preventing function of the oil baffle plate and the partitioning plate II, the lubricating oil is prevented from being brought in a cylinder by the piston rod and outwards leaking, and the purposes of no oil leakage, no pollution, and long-period stable operation are achieved.

Description

The compressor of the two chambers of band oil-scraping device
Technical field
The present invention relates to compressor, especially relate to a kind of compressor with two chambers oil-scraping device.
Technical background
Oil-scraping device is the indispensable critical piece of reciprocating-piston compressor, and especially the sort of compressed media is the compressor of the special gas such as nitrogen, oxygen, carbon dioxide.With regard to chemical industry was produced urea, carbon dioxide was the high pressure feed for urea production.Carbon dioxide after compressed machine compression, if the frizing poor effect at scraper ring place in oil-scraping device, not only the lubricant oil leakage of oil is serious, lubrication oil consumption is high, and the lubricant oil that spills will pollute site environment, also can cause the equipment of system pipeline, urea device to stop up.be on the one hand because of lubricant oil that the scraper ring place spills be attached to do not scraped on piston rod bring cylinder into after, brought in urea device by carbon dioxide immediately, lubricant oil in this carbon dioxide will at high temperature be analysed carbon and be caused the equipment of urea device to stop up, the utilization efficiency of high compression ring equipment is descended, it (is mainly the heat exchange efficiency decline of heat exchanger that product yield reduces, do not reach technological requirement, the conversion ratio that causes ammonia and carbon dioxide reaction to change into urea descends), that pollution due to lubricant oil causes and the whiteness of urea product descends on the other hand, the problems such as output is influenced, have a strong impact on the normal of urea device, stable and efficient operation and quality of product.Be the compressor of oxygen to compressed media, require especially the lubricant oil on piston rod is thoroughly scraped totally, brought into cylinder by piston rod and to external leakage, allowed anything but lubricant oil to enter to stop lubricant oil, prevent the accident that causes therefrom.
Summary of the invention
The object of the present invention is to provide a kind of compressor of band two chambers oil-scraping device of oil-proof, pollution-free, long-period stable operation, this pair chamber oil-scraping device can prevent lubricant oil from the side of the crosshead of compressor along piston rod leakage of oil outward.
The object of the present invention is achieved like this:
a kind of compressor with two chambers oil-scraping device, comprise fuselage, crosshead, scrape oil box, middle extend neck, piston rod, gland, oil baffle and oil return pond, scrape the right-hand member that oil box is arranged on middle extend neck, gland and oil baffle are fixed on to be scraped on oil box, the right-hand member of piston rod is fixed on crosshead, the left end of piston rod is fixed on piston and in cylinder and moves reciprocatingly, be provided with in the bottom of scraping oil box and scrape the oil box spill port, extend neck spill port in the middle of being provided with on middle extend neck, be provided with the fuselage spill port on fuselage, feature is: be arranged on the spacer ring of scraping oil box middle part and will scrape oil box and be divided into that oil pocket is scraped on the right side and oil pocket is scraped on a left side, at right frizing cavity inner sleeve, four groups of iron-based scraper rings are arranged, cover has the dividing plate I between adjacent iron-based scraper ring, cover has the dividing plate II between the spacer ring of scraping the oil pocket left end and last group iron-based scraper ring, overlap successively from left to right in oil pocket is scraped on a left side one group of seal ring and two groups of copper base scraper rings are arranged, between seal ring and copper base scraper ring and between two groups of copper base scraper rings all cover the dividing plate I is arranged, be provided with the spacer ring oil outlet in the bottom of spacer ring, that scrapes oil box bottom scrapes oil box spill port and the corresponding same level line position that is in spacer ring oil outlet position, be provided with dividing plate I oil outlet in the dividing plate I, when each dividing plate I oil outlet is installed, correspondence is in bottom same level line position.
The iron-based scraper ring forms one group and be arranged in spacer ring by two scraper rings, and scraper ring is radial slot and is made by the iron-based powder metallurgy, the scraper ring extension spring of iron-based is installed on the external annulus of iron-based scraper ring.
Copper base scraper ring forms one group and be arranged in spacer ring by two scraper rings, and scraper ring is radial slot and is made by copper original washing powder foam metallurgy, the scraper ring extension spring of copper base is installed on the external annulus of copper base scraper ring.
Seal ring is comprised of three flap seal rings, six flap seal rings, straight pin and seal ring extension spring, three flap seal rings form a ring, six flap seal rings form a ring, three flap seal rings and six flap seal rings are placed side by side locates and is arranged in spacer ring by straight pin, on the external annulus of three flap seal rings and six flap seal rings, the seal ring extension spring is installed all.
Spacer ring of the present invention will be scraped oil box and be divided into that oil pocket is scraped on the right side and oil pocket is scraped on a left side, form two chambers, the right side is scraped oil pocket and is comprised of the iron-based scraper ring more than two groups, a left side is scraped oil pocket and is added one group of seal ring by two groups of copper base scraper rings and form, and seal ring, copper base scraper ring, dividing plate I, spacer ring, dividing plate II, iron-based scraper ring, gland and oil baffle all are enclosed within on piston rod.When the piston rod to-and-fro motion, at first, by iron-based scraper ring extension spring, two groups of above iron-based scraper rings are radially tightened up, the most of lubricant oil that is attached to piston rod at crosshead slideway place is scraped off, lubricant oil falls by deadweight by dividing plate I oil outlet and under the effect of oil baffle, then through the oil return pond of fuselage spill port inflow fuselage to the recovery that circulates of the lubrication station of compressor; Secondly, by copper base scraper ring extension spring, two groups of copper base scraper rings are radially tightened up, the secondary frizing of copper base scraper ring and seal ring are not jointly scraped clean lubricant oil and are again thoroughly scraped totally being attached on piston rod, brought into cylinder by piston rod and to external leakage to stop lubricant oil, the lubricant oil that scrapes off in the other direction with the iron-based scraper ring that copper base scraper ring and seal ring scrape again by dividing plate I oil outlet and through scrape the oil box spill port flow in the middle of the extend neck spill port, to the recovery that circulates of the lubrication station of compressor.The effect of spacer ring is: on the one hand the iron-based scraper ring not the opposite direction of scraping remain in lubricant oil that piston rod is with and pass through dividing plate I oil outlet and spacer ring oil outlet, again through scrape the oil box spill port flow in the middle of the extend neck spill port be recovered in the compressor lubrication station, reclaim on the other hand lubricant oil that copper base scraper ring scrapes off to the compressor lubrication station.Seal ring is pushed three flap seal rings and six flap seal rings to by the seal ring extension spring end face of seal ring, and seal ring is radially tightened up, and forms the end face shaft seal, is brought into cylinder by piston rod and to external leakage to stop lubricant oil.
Therefore, the present invention scrapes off by the iron-based scraper ring more than two groups, two groups of copper base scraper rings and one group of seal ring and spacer ring etc. the lubricant oil that the slideway place of crosshead is attached to piston rod, thoroughly scrape totally, brought into cylinder by piston rod and to external leakage to stop lubricant oil.It has following advantage:
(1) scrape and be divided into that oil pocket is scraped on the right side and oil pocket is scraped on a left side in oil box by spacer ring, form two chambers, prevent that the right side from scraping the lubricant oil that oil pocket and the left scraper ring of scraping in oil pocket scrape and forming back mixing, played the effect of classification frizing.
(2) by the spacer ring oil outlet, the right makes lubricant oil flow in the oil return pond of fuselage by lower the backwardness by the fuselage spill port of deadweight under the obstruct of oil baffle, prevents from playing a reversed role under the dividing plate II intercepts on the iron-based scraper ring most of lubricant oil left side that scrapes off.
(3) material of iron-based scraper ring is harder, and not easy to wear, frizing is effective, and the combination of four groups of iron-based scraper rings can be wiped the most of lubricant oil on piston rod off.
(4) material of copper base scraper ring is softer, and the combination frizing of two groups of copper base scraper rings is cleaner, can further the lubricant oil that is attached on piston rod be scraped totally.
(5) the present invention is provided with three place's spill ports, and the fuselage spill port is arranged on the side-lower of fuselage, has avoided the air-flow that causes because of the crosshead to-and-fro motion to stop lubricant oil to be back to the oil return pond; Scrape the oil box spill port and further reclaim the lubricant oil that copper base scraper ring secondary frizing and iron-based scraper ring scrape off in the other direction, avoid lubricant oil constantly assemble in scraping oil box and finally leak outside; Middle extend neck spill port calculates gained, has guaranteed that lubricant oil refluxes unobstructed.
(6) left end at copper base scraper ring arranges one group of seal ring, and in the inside of scraping oil box, external sealed is become interior sealing, make the lubricant oil that copper base scraper ring scrapes flow into the spacer ring oil outlet to scraping the oil box spill port by the spacer ring oil outlet, reduced the possibility to external leakage.
(7) oil-proof, pollution-free, long-period stable operation.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of scraping oil box in Fig. 1;
Fig. 3 is the positive view of dividing plate I;
Fig. 4 is the positive view of dividing plate II;
Fig. 5 is the positive view of spacer ring;
Fig. 6 is the positive view of iron-based, copper base scraper ring;
Fig. 7 is the left view of iron-based, copper base radial slot scraper ring;
Fig. 8 is the right elevation of iron-based, copper base radial slot scraper ring;
Fig. 9 is the positive view of seal ring;
Figure 10 is the left view (six flap seal rings) of seal ring;
Figure 11 is the right elevation (three flap seal rings) of seal ring.
Embodiment:
Below in conjunction with example and contrast accompanying drawing the present invention is described in further detail.
a kind of compressor with two chambers oil-scraping device, comprise fuselage 5, crosshead 4, scrape oil box 3, middle extend neck 2, piston rod 1, oil baffle 10, gland 11 and oil return pond 6, scrape the right-hand member that oil box 3 is arranged on middle extend neck 2, oil baffle 10 and gland 11 are fixed on to be scraped on oil box 3, the right-hand member of piston rod 1 is fixed on crosshead 4, the left end of piston rod 1 is fixed on piston, level is passed oil baffle 10 from right to left, gland 11 moves reciprocatingly on cylinder with the centre of scraping oil box 3, be provided with in the bottom of scraping oil box 3 and scrape oil box spill port 9, extend neck spill port 8 in the middle of being provided with on middle extend neck 2, be provided with fuselage spill port 7 on fuselage 5, being arranged on the spacer ring 15 of scraping oil box 3 middle parts will scrape oil box and be divided into that oil pocket 3-2 is scraped on the right side and oil pocket 3-1 is scraped on a left side, scrape oil pocket 3-2 inner sleeve on the right side four groups of iron-based scraper rings 13 are arranged, cover has dividing plate I 12 between adjacent iron-based scraper ring 13, cover has dividing plate II 14 between the spacer ring 15 of scraping oil pocket 3-2 left end and last group iron-based scraper ring 13, overlap successively from left to right in oil pocket 3-1 is scraped on a left side one group of seal ring 18 and two groups of copper base scraper rings 17 are arranged, between seal ring 18 and copper base scraper ring 17 and between two groups of copper base scraper rings 17 all cover dividing plate I 12 is arranged, be provided with spacer ring oil outlet 15-1 in the bottom of spacer ring 15, that scrapes oil box 3 bottoms scrapes oil box spill port 9 and the corresponding same level line position that is in spacer ring oil outlet 15-1 position, be provided with dividing plate I oil outlet 12-1 in dividing plate I 12, when each dividing plate I oil outlet 12-1 installs, correspondence is in bottom same level line position.
Iron-based scraper ring 13 forms one group and be arranged in spacer ring 16 by two scraper rings 19, and scraper ring 19 is for radial slot and made by the iron-based powder metallurgy, and the scraper ring extension spring 20 of iron-based is installed on the external annulus of iron-based scraper ring 13.
Copper base scraper ring 17 forms one group and be arranged in spacer ring 16 by two scraper rings 19, and scraper ring 19 is for radial slot and made by copper original washing powder foam metallurgy, and the scraper ring extension spring 20 of copper base is installed on the external annulus of copper base scraper ring 17.
Scraper ring 19 structures of iron-based scraper ring 13 and copper base scraper ring 17 are identical, and only material is different, and scraper ring extension spring 20 structures of iron-based scraper ring 13 and copper base scraper ring 17 are identical.
Seal ring 18 is comprised of three flap seal rings 22, six flap seal rings 21, straight pin 23 and seal ring extension spring 23, three flap seal rings 22 form a ring, six flap seal rings 21 form a ring, three flap seal rings 22 and six flap seal rings 21 placed side by side are located by straight pin 23 and are arranged in spacer ring 16, on the external annulus of three flap seal rings 22 and six flap seal rings 21, seal ring extension spring 24 are installed.
Scrape oil box spill port 9 and answer the corresponding same level line position that is in spacer ring oil outlet 15-1 position, make and scrape oil box spill port 9 and effectively be superimposed with spacer ring oil outlet 15-1, allow lubricant oil flow out smoothly; Be provided with dividing plate I oil outlet 12-1 on each dividing plate I 12, during installation, each dividing plate I oil outlet 12-1 answers correspondence to be in bottom same level line position, allows lubricant oil effectively flow out smoothly.

Claims (4)

1. be with pair compressor of chambers oil-scraping device for one kind, comprise fuselage, crosshead, scrape oil box, middle extend neck, piston rod, gland, oil baffle and oil return pond, scrape the right-hand member that oil box is arranged on middle extend neck, gland and oil baffle are fixed on to be scraped on oil box, the right-hand member of piston rod is fixed on crosshead, the left end of piston rod is fixed on piston and in cylinder and moves reciprocatingly, be provided with in the bottom of scraping oil box and scrape the oil box spill port, extend neck spill port in the middle of being provided with on middle extend neck, be provided with the fuselage spill port on fuselage, it is characterized in that: be arranged on the spacer ring of scraping oil box middle part and will scrape oil box and be divided into that oil pocket is scraped on the right side and oil pocket is scraped on a left side, at right frizing cavity inner sleeve, four groups of iron-based scraper rings are arranged, cover has the dividing plate I between adjacent iron-based scraper ring, cover has the dividing plate II between the spacer ring of scraping the oil pocket left end and last group iron-based scraper ring, overlap successively from left to right in oil pocket is scraped on a left side one group of seal ring and two groups of copper base scraper rings are arranged, between seal ring and copper base scraper ring and between two groups of copper base scraper rings all cover the dividing plate I is arranged, be provided with the spacer ring oil outlet in the bottom of spacer ring, that scrapes oil box bottom scrapes oil box spill port and the corresponding same level line position that is in spacer ring oil outlet position, be provided with dividing plate I oil outlet in the dividing plate I, when each dividing plate I oil outlet is installed, correspondence is in bottom same level line position.
2. compressor according to claim 1, it is characterized in that: the iron-based scraper ring forms one group and be arranged in spacer ring by two scraper rings, scraper ring is radial slot and is made by the iron-based powder metallurgy, the scraper ring extension spring of iron-based is installed on the external annulus of iron-based scraper ring.
3. compressor according to claim 1, it is characterized in that: copper base scraper ring forms one group and be arranged in spacer ring by two scraper rings, scraper ring is radial slot and is made by copper original washing powder foam metallurgy, the scraper ring extension spring of copper base is installed on the external annulus of copper base scraper ring.
4. according to claim 2 or 3 described compressors, it is characterized in that: seal ring is comprised of three flap seal rings, six flap seal rings, straight pin and seal ring extension spring, three flap seal rings form a ring, six flap seal rings form a ring, three flap seal rings and six flap seal rings are placed side by side locates and is arranged in spacer ring by straight pin, on the external annulus of three flap seal rings and six flap seal rings, the seal ring extension spring is installed all.
CN201310102675.2A 2013-03-28 2013-03-28 Compressor with dual-chamber oil-scraping device CN103147960B (en)

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Application Number Priority Date Filing Date Title
CN201310102675.2A CN103147960B (en) 2013-03-28 2013-03-28 Compressor with dual-chamber oil-scraping device

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Application Number Priority Date Filing Date Title
CN201310102675.2A CN103147960B (en) 2013-03-28 2013-03-28 Compressor with dual-chamber oil-scraping device

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CN103147960A true CN103147960A (en) 2013-06-12
CN103147960B CN103147960B (en) 2015-05-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106014928A (en) * 2016-05-13 2016-10-12 蚌埠市金鹏燃气设备制造有限公司 Multi-stage oil scraping device for compressor

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178899A (en) * 1978-09-20 1979-12-18 Harry Julich Low-friction piston
US4240644A (en) * 1977-04-27 1980-12-23 Gemini Seals, Inc. Piston seal
EP0139965A1 (en) * 1983-08-25 1985-05-08 Alfred F. Schirmer Seal ring for piston rods
GB2147958A (en) * 1983-09-26 1985-05-22 Ae Plc Piston rod seal
JPS6138266A (en) * 1984-07-31 1986-02-24 Mitsubishi Heavy Ind Ltd Piston rod gland packing equipping with gas-tight ring
CN2326737Y (en) * 1997-11-10 1999-06-30 银世德 Oil-saving piston ring
CN2577003Y (en) * 2002-09-29 2003-10-01 山东华鲁恒升化工股份有限公司 Scraper ring assembly
US20040227301A1 (en) * 2003-05-15 2004-11-18 Wood Michael H. Combination oil scrapper ring/gas seal assembly
GB2445567A (en) * 2007-01-10 2008-07-16 Ernest Stephenson Terry A wiper seal/thermal barrier formed of exfoliated graphite for prevention of ingress of solids and liquids into a stuffing box
CN203130423U (en) * 2013-03-28 2013-08-14 江西气体压缩机有限公司 Compressor with dual-chamber oil scraper device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240644A (en) * 1977-04-27 1980-12-23 Gemini Seals, Inc. Piston seal
US4178899A (en) * 1978-09-20 1979-12-18 Harry Julich Low-friction piston
EP0139965A1 (en) * 1983-08-25 1985-05-08 Alfred F. Schirmer Seal ring for piston rods
GB2147958A (en) * 1983-09-26 1985-05-22 Ae Plc Piston rod seal
JPS6138266A (en) * 1984-07-31 1986-02-24 Mitsubishi Heavy Ind Ltd Piston rod gland packing equipping with gas-tight ring
CN2326737Y (en) * 1997-11-10 1999-06-30 银世德 Oil-saving piston ring
CN2577003Y (en) * 2002-09-29 2003-10-01 山东华鲁恒升化工股份有限公司 Scraper ring assembly
US20040227301A1 (en) * 2003-05-15 2004-11-18 Wood Michael H. Combination oil scrapper ring/gas seal assembly
GB2445567A (en) * 2007-01-10 2008-07-16 Ernest Stephenson Terry A wiper seal/thermal barrier formed of exfoliated graphite for prevention of ingress of solids and liquids into a stuffing box
CN203130423U (en) * 2013-03-28 2013-08-14 江西气体压缩机有限公司 Compressor with dual-chamber oil scraper device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106014928A (en) * 2016-05-13 2016-10-12 蚌埠市金鹏燃气设备制造有限公司 Multi-stage oil scraping device for compressor

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