CN112923058A - Combined oil-gas sealing device for low-rotating-speed equipment - Google Patents

Combined oil-gas sealing device for low-rotating-speed equipment Download PDF

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Publication number
CN112923058A
CN112923058A CN202110129913.3A CN202110129913A CN112923058A CN 112923058 A CN112923058 A CN 112923058A CN 202110129913 A CN202110129913 A CN 202110129913A CN 112923058 A CN112923058 A CN 112923058A
Authority
CN
China
Prior art keywords
shell
shaft sleeve
lubricant
low
gland
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
Application number
CN202110129913.3A
Other languages
Chinese (zh)
Inventor
杨天郁
黄科驰
汤永胜
鞠兆刚
赵志芳
赵光辉
胡志成
刘朋远
杨旭斌
刘岩
胡学志
刘志伟
赵连元
李志�
王业行
张猛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CNOOC Energy Technology and Services Ltd
CNOOC Energy Development of Equipment and Technology Co Ltd
Original Assignee
CNOOC Energy Technology and Services Ltd
CNOOC Energy Development of Equipment and Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CNOOC Energy Technology and Services Ltd, CNOOC Energy Development of Equipment and Technology Co Ltd filed Critical CNOOC Energy Technology and Services Ltd
Priority to CN202110129913.3A priority Critical patent/CN112923058A/en
Publication of CN112923058A publication Critical patent/CN112923058A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/26Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings
    • F16J15/30Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings with sealing rings made of carbon
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/26Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings
    • F16J15/28Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings with sealing rings made of metal
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/32Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/32Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/324Arrangements for lubrication or cooling of the sealing itself
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/32Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3296Arrangements for monitoring the condition or operation of elastic sealings; Arrangements for control of elastic sealings, e.g. of their geometry or stiffness

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)

Abstract

The invention provides a combined oil-gas sealing device for low-rotation-speed equipment, which comprises a shaft sleeve, a gland and a shell, wherein the shell is sleeved on the outer side of the shaft sleeve, the gland is embedded between the shaft sleeve and the shell, a plurality of flexible graphite sealing rings are also arranged between the shaft sleeve and the shell and below the gland, a metal gasket is arranged between every two adjacent flexible graphite sealing rings in a cushioning mode, a lubricant channel is also arranged in the shell, the top end of the lubricant channel is connected with a lubricant filling port, the tail end of the lubricant channel is tightly attached to the outer wall of the shaft sleeve, and the top end of the lubricant channel is also connected with a leakage observation port. The invention reduces the abrasion of the oil-gas seal to the shaft and prolongs the service life.

Description

Combined oil-gas sealing device for low-rotating-speed equipment
Technical Field
The invention relates to the technical field of oil-gas equipment sealing, in particular to a combined oil-gas sealing device for low-rotation-speed equipment.
Background
At present, the packing seal of the original use of the walnut shell stirrer easily wears self and shaft, resulting in the untight gas leakage of seal, and oil gas equipment may contain poisonous gas such as hydrogen sulfide, and in case the harm of revealing is very big, the urgent need of improvement is made. The existing sealing mode adopts packing for sealing, the sealing effect is poor, failure and leakage are easy to occur, and the sealing service life is short; the commonly used tin bronze packing seals wear the shaft significantly. Therefore, the technical scheme that the failure damage and oil leakage caused by the failure damage of the low-rotation-speed oil-gas seal similar to a walnut shell stirrer are solved, the seal can be ensured not to fail for a long time, and the normal work of equipment is ensured without harming personnel and environment is urgently needed in the prior art.
Disclosure of Invention
In view of the above problems, the present invention provides a combined oil and gas sealing device for low rotation speed equipment.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a combined oil gas sealing device for low rotational speed equipment, includes axle sleeve, gland and casing, the casing cover is established the outside of axle sleeve, the gland inlays to be established the axle sleeve with between the casing, the axle sleeve with be located between the casing the below of gland still is provided with the flexible graphite sealing washer of multichannel, fills up between the flexible graphite sealing washer of every adjacent twice and is equipped with metal packing ring, still be provided with the emollient passageway in the casing, the top of emollient passageway is connected with the emollient filler, the end of emollient passageway is hugged closely the outer wall of axle sleeve, the end of emollient passageway still fills up and is equipped with the general stopper ring of elasticity.
And the top end of the lubricant passage is also connected with a leakage observation port.
The flexible graphite sealing rings have three paths, and a layer of metal gasket is arranged between every two adjacent flexible graphite sealing rings in a cushioning mode.
The outside of casing still is equipped with first O type sealing washer, the inboard pad of axle sleeve is equipped with second O type sealing washer.
And the lubricant filled in the lubricant channel is sealing grease or lubricating oil.
Compared with the prior art, the invention has the beneficial effects that: the two automatic compensation type elastic universal plug rings are positioned at the lower end of the shaft sleeve and can well seal liquid and gas, and the three flexible graphite packing seals to form absolute sealing for hydrogen sulfide leakage, so that the sealing effect is better; in addition, three graphite metal gaskets are used for spacing, so that the abrasion of the oil-gas seal to the shaft is reduced, and the service life is prolonged.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Reference numerals: 1-shaft sleeve, 2-gland, 3-shell, 4-flexible graphite sealing ring, 5-metal gasket, 6-elastic universal plug ring, 71-first O-shaped sealing ring, 72-second O-shaped sealing ring, 8-leakage observation port, 9-lubricant filling port and 10-lubricant channel.
Detailed Description
The invention is further illustrated by the following specific embodiments.
The combined oil-gas sealing device for the low-rotation-speed equipment shown in fig. 1 comprises a shaft sleeve 1, a gland 2 and a shell 3, wherein the shell 3 is sleeved on the outer side of the shaft sleeve 1, and the gland 2 is embedded between the shaft sleeve 1 and the shell 3. The part of the outer surface of the shaft sleeve 1 which participates in friction is plated with hard chromium and is ground to the grinding roughness Ra0.8. The outer side of the shell 3 is also sleeved with a first O-shaped sealing ring 71, and the inner side of the shaft sleeve 1 is also padded with a second O-shaped sealing ring 72.
The lower part of the gland 2 between the shaft sleeve 1 and the shell 3 is also provided with a plurality of flexible graphite sealing rings 4, a metal gasket 5 is arranged between every two adjacent flexible graphite sealing rings 4, in the embodiment, the number of the flexible graphite sealing rings 4 is three, and a layer of metal gasket 5 is arranged between every two adjacent flexible graphite sealing rings 4. The three flexible graphite sealing rings 4 form absolute plugging for hydrogen sulfide leakage, and can be disassembled in a complete set in order to ensure that the graphite does not contact with the shaft sleeve 1 in too large area and reduce the shaft power. The whole set of seal is a packaging form, the shaft sleeve 1 is in clearance fit with the transmission shaft, the shaft sleeve 1 does not move relative to the shaft, and abrasion is reduced.
A lubricant channel 10 is further arranged in the shell 3, the tail end of the lubricant channel 10 is tightly attached to the outer wall of the shaft sleeve 1, and an elastic universal plug ring 6 is further padded at the tail end of the lubricant channel 10. The elastic universal piston ring 6 is an elastic automatic compensation type universal piston ring, and has two parts which are respectively positioned at the upper part and the lower part of the tail end of the lubricant channel 10 and are both positioned below the shaft sleeve 1, the pressure resistance can reach 2MPa, the linear speed can reach 5m/s, the temperature is-200 to +250 ℃, the self-lubricating property is good, and the requirement on the jumping of a shaft is not high; the top end of the lubricant passage 10 is connected with a lubricant filling port 9 and a leakage observation port 8, and the lubricant filled in the lubricant passage 10 is sealing grease or lubricating oil. The double-layer elastic universal plug ring 6 forms two-stage sealing, a lubricant channel 10 capable of being filled with sealing grease or lubricating oil is arranged between the two-stage sealing, the elastic universal plug ring 6 is lubricated and sealed in an auxiliary manner, a leakage observation point is checked through the leakage observation port 8, and whether the elastic universal plug ring 6 is leaked or not is observed at any time.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The above is only a preferred embodiment of the present invention, but the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make several variations and modifications without departing from the inventive concept of the present invention, which fall into the protection scope of the present invention.

Claims (5)

1. A combined oil-gas sealing device for low-speed equipment is characterized by comprising a shaft sleeve (1), a gland (2) and a shell (3), the shell (3) is sleeved on the outer side of the shaft sleeve (1), the gland (2) is embedded between the shaft sleeve (1) and the shell (3), a plurality of flexible graphite sealing rings (4) are arranged between the shaft sleeve (1) and the shell (3) and below the gland (2), a metal gasket (5) is arranged between every two adjacent flexible graphite sealing rings (4), a lubricant channel (10) is also arranged in the shell (3), the top end of the lubricant channel (10) is connected with a lubricant filling port (9), the tail end of the lubricant channel (10) is tightly attached to the outer wall of the shaft sleeve (1), the tail end of the lubricant channel (10) is also padded with an elastic universal plug ring (6).
2. The combined oil and gas seal device for low rotational speed equipment according to claim 1, wherein a leakage observation port (8) is further connected to the top end of the lubricant passage (10).
3. The combined oil-gas sealing device for low-speed equipment according to claim 1, wherein the number of the flexible graphite sealing rings (4) is three, and a metal gasket (5) is arranged between every two adjacent flexible graphite sealing rings (4).
4. The combined oil-gas sealing device for the low-speed equipment according to claim 1, wherein a first O-shaped sealing ring (71) is sleeved on the outer side of the shell (3), and a second O-shaped sealing ring (72) is padded on the inner side of the shaft sleeve (1).
5. The combined oil and gas seal device for low rotation speed equipment according to claim 1, wherein the lubricant filled in the lubricant passage (10) is sealing grease or lubricating oil.
CN202110129913.3A 2021-01-29 2021-01-29 Combined oil-gas sealing device for low-rotating-speed equipment Pending CN112923058A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110129913.3A CN112923058A (en) 2021-01-29 2021-01-29 Combined oil-gas sealing device for low-rotating-speed equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110129913.3A CN112923058A (en) 2021-01-29 2021-01-29 Combined oil-gas sealing device for low-rotating-speed equipment

Publications (1)

Publication Number Publication Date
CN112923058A true CN112923058A (en) 2021-06-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110129913.3A Pending CN112923058A (en) 2021-01-29 2021-01-29 Combined oil-gas sealing device for low-rotating-speed equipment

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113389901A (en) * 2021-07-16 2021-09-14 四川永祥股份有限公司 Sealing structure of stirring shaft of acetylene generator

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1059298A (en) * 1965-05-19 1967-02-15 Dresser Ind Stuffing box construction
CN102454790A (en) * 2010-10-22 2012-05-16 王仲明 Combined modularly-designed shaft seal for reaction kettle
CN102606739A (en) * 2012-03-29 2012-07-25 苏州新凌电炉有限公司 Sealing device of screw conveyer
CN205896371U (en) * 2016-07-14 2017-01-18 西派集团有限公司 Anti inside and outside inspersed triple valve rods of granule nature medium move sealing device
CN205956387U (en) * 2016-08-29 2017-02-15 兰州天大华瑞环境工程技术有限公司 Two -stage combination formula rotary shaft seal device
CN108105386A (en) * 2018-01-03 2018-06-01 马鞍山市吉利机械设备有限公司 A kind of filter run steadily in the long term and its hybrid shaft seal assembly
CN108223800A (en) * 2018-01-03 2018-06-29 马鞍山市吉利机械设备有限公司 A kind of filter and its shaft seal assembly with excellent seal
CN110270289A (en) * 2019-07-02 2019-09-24 中国科学院过程工程研究所 A kind of superelevation sealing polycarbonate reaction unit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1059298A (en) * 1965-05-19 1967-02-15 Dresser Ind Stuffing box construction
CN102454790A (en) * 2010-10-22 2012-05-16 王仲明 Combined modularly-designed shaft seal for reaction kettle
CN102606739A (en) * 2012-03-29 2012-07-25 苏州新凌电炉有限公司 Sealing device of screw conveyer
CN205896371U (en) * 2016-07-14 2017-01-18 西派集团有限公司 Anti inside and outside inspersed triple valve rods of granule nature medium move sealing device
CN205956387U (en) * 2016-08-29 2017-02-15 兰州天大华瑞环境工程技术有限公司 Two -stage combination formula rotary shaft seal device
CN108105386A (en) * 2018-01-03 2018-06-01 马鞍山市吉利机械设备有限公司 A kind of filter run steadily in the long term and its hybrid shaft seal assembly
CN108223800A (en) * 2018-01-03 2018-06-29 马鞍山市吉利机械设备有限公司 A kind of filter and its shaft seal assembly with excellent seal
CN110270289A (en) * 2019-07-02 2019-09-24 中国科学院过程工程研究所 A kind of superelevation sealing polycarbonate reaction unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113389901A (en) * 2021-07-16 2021-09-14 四川永祥股份有限公司 Sealing structure of stirring shaft of acetylene generator
CN113389901B (en) * 2021-07-16 2023-01-10 四川永祥股份有限公司 Sealing structure of stirring shaft of acetylene generator

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Application publication date: 20210608

RJ01 Rejection of invention patent application after publication