CN102454626B - Compressor - Google Patents
Compressor Download PDFInfo
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- CN102454626B CN102454626B CN201110320288.7A CN201110320288A CN102454626B CN 102454626 B CN102454626 B CN 102454626B CN 201110320288 A CN201110320288 A CN 201110320288A CN 102454626 B CN102454626 B CN 102454626B
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- dry gas
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
Be provided with in compressor: dry gas seal portion, the stationary ring there is the rotating ring being disposed in rotor axle setting between housing with rotor shaft, configuring to the perpendicular end surface that can be connected to the rotating ring of substantially vertical rotor shaft via elastic member; Sealing gas supply line, connects the space of perpendicular end surface and the supply source of sealing gas that comprise the rotating ring that can abut with stationary ring; Drain line connection space, is positioned at than the space of dry gas seal portion by the surrounding of the rotor shaft of drive mechanism side; Drain line, connects drain line connection space and space outerpace; Drain line branch flow passage, collaborates drain line again from drain line branch; Safety valve, if the pressure of the upstream side of drain line branch flow passage becomes more than authorized pressure in drain line branch flow passage, valve opening.Thus, even if dry gas seal damage in the compressor that have employed dry gas seal as shaft sealing, the damaged and Leakage Gas of high pressure also can safely and automatically dispose.
Description
Technical field
The present invention relates to compressor, more particularly, relate to the compressor adopting so-called dry gas seal.
Background technique
Within the compressor, there will be a known various forms of compressor, but be mostly the solid of rotation of screw rotor or impeller etc. is rotated, along with the rotation of this solid of rotation by the form of fluid compression.Therefore, within the compressor, form the compression volume for the major component and compressed fluid of receiving solid of rotation, and form the bearing portion of the axle of this solid of rotation of supporting.Further, between these compression volume and bearing portions, in order to prevent spilling and the inflow of lubriation material (oil, lubricating grease etc.) from from bearing portion to compression volume from the compressed fluid of compression volume, various sealing (shaft sealing) is adopted.
Especially, carry out as the fluid that should compress the compressor that processes for using the gas of the combustibility of hydrocarbon etc., explosive gas or toxic gas, corrosive gas etc., it is important for how forming sealing for this gas.Recently, as the sealing not using oil as the dry type of the material of sealing completely, so-called dry gas seal receives publicity.
Roughlly speaking, comprise the rotating ring and stationary ring that rotate integrally with the axle of solid of rotation, described stationary ring is configured on the position opposed with the perpendicular end surface being approximately perpendicular to axle of this rotating ring dry gas seal, and fixing via elastic member and housing etc.Dry gas seal is under the static state of solid of rotation, and stationary ring is connected to rotating ring and forms sealing surface, and preventing should by the outflow etc. of gas compressed.In addition, in the perpendicular end surface of the rotating ring of dry gas seal, the many places in namely opposed with stationary ring face, spiral form, spiral helicine groove is formed with.Further, under the state that solid of rotation rotates, sealing gas flows in spiral form, spiral helicine groove, form dynamic pressure, between rotating ring and stationary ring, form small gap, form the sealing surface realized by sealing gas there, also can prevent should by the outflow etc. of gas compressed.
In addition, same with dry gas seal, the axle as sealed member and solid of rotation when solid of rotation rotates is the sealing (shaft sealing) of contactless state, there will be a known labyrinth sealing.But, as mentioned above, because the sealing surface forming dry gas seal is the face substantially vertical with the axle of solid of rotation, so dry gas seal is not vulnerable to the impact of the vibration of the radial direction of the axle of solid of rotation compared with labyrinth.In addition, with the sealed member formed by labyrinth sealing compared with the gap of axle, the gap at the sealing surface place of dry gas seal can be reduced, so there is the advantage of the leakage rate that can significantly to reduce compared with leakage rate during labyrinth sealing in dry gas seal etc.
As mentioned above, dry gas seal is very useful as sealing (shaft sealing), but has also been noted the problem that should improve.Such as, if because of foreign matter (liquid etc.) to the intrusion etc. of sealing surface betide produce in the power between rotating ring and stationary ring (floating power) uneven, in the rotation of solid of rotation, then rotate the situation that ring contacts with stationary ring, sealing surface likely damages.If dry gas seal damage, damaged, then the gas spilt can cause other undesirable condition again, not preferably.Therefore, require predictably or promptly to detect the undesirable condition of the damage, breakage etc. of dry gas seal, the technology of the counte-rplan corresponding with this undesirable condition can be realized.
If outlined such conventional art, in past case 1, then such as disclose a kind of abnormality detection system of contactless dry gas seal, it possesses the device (with reference to No. 4-29678, Japanese Unexamined Patent Publication) of the quantity of gas leakage of the ventilation line detecting contactless dry gas seal.In addition, a kind of axle sealing system of centrifugal compressor is proposed in past case 2, it is at the gas leakage temperature meter using arranging the temperature measuring this gas leakage in the gas leakage stream of externally being discharged as gas leakage by the buffer gas in shaft sealer (dry gas seal), has the control gear (with reference to No. 2002-155892, Japanese Unexamined Patent Publication) centrifugal compressor being stopped when the temperature of the gas leakage measured by this gas leakage temperature meter exceedes the setting value preset.
In addition, also proposed the various conventional art being used for avoiding the generation of the undesirable condition of the damage, breakage etc. of dry gas seal itself.Such as, the high-pressure liquid treatment device of past case 3 has apparatus main body, the high-pressure liquid treatment device of the fluid than barometric pressure high pressure is enclosed in the inside of said apparatus main body, operate as substituting of other high-pressure liquid treatment device above-mentioned when there occurs undesirable condition in this high-pressure liquid treatment device other high-pressure liquid treatment device only beyond above-mentioned high-pressure liquid treatment device, possess and be located in said apparatus main body and prevent the fluid of above-mentioned inclosure from the dry gas seal of said apparatus body leakage, with to the internal feed fluid of said apparatus main body with the fluid supply unit (with reference to No. 2001-355594, Japanese Unexamined Patent Publication) making the pressure of the above-mentioned fluid be enclosed in said apparatus main body be not less than setting value.
According to the abnormality detection system of the contactless dry gas seal of above-mentioned past case 1, due to the exception of the gas flow of the exception and gas seal air, nitrogen etc. that can distinguish contactless dry gas seal, so easily compressor, blower, gas fan can not be stopped because of the exception of ventilation line, can only when the exception of contactless dry gas seal veritably, compressor, blower, gas fan be stopped.In addition, according to the axle sealing system of the centrifugal compressor of above-mentioned past case 2, owing to can damage at dry gas seal, damaged before detect abnormal, so the damage of sealing can be prevented in advance.
But when by the shaft sealing of dry gas seal for the treatment of the compressor of pressurized gas, once dry gas seal damage, damaged, then the gas of high pressure leaks out sharp.In the case, even if exception detected and make compressor stop, the leakage of the gas of high pressure also can not directly stop, so can not tackle completely when the abnormality detection system of above-mentioned past case 1.In addition, the axle sealing system of past case 2 not premised on dry gas seal damage, destroying, so this undesirable condition can not be tackled when there occurs the damage of dry gas seal, damaged undesirable condition in reality.
And then, the high-pressure liquid treatment device of past case 3 is also same with the axle sealing system of past case 2, not premised on dry gas seal damage, breakage, so this undesirable condition can not be tackled when there occurs the damage of dry gas seal, damaged undesirable condition in reality.In addition, in this past case 3, owing to needing the sealing gas than the gas high pressure in compressor, so the parts that can bear high pressure must be used for the pipe arrangement of sealing gas circuit and accessory, become the object etc. of pressurized gas safety law, become complicated from the viewpoint of making and formality.
Summary of the invention
Thus, the present invention proposes in view of technical problem in the past, object is to provide a kind of compressor, is adopting in the compressor of dry gas seal as shaft sealing, even if the damage of above-mentioned dry gas seal, the damaged and Leakage Gas of high pressure also can safely and automatically dispose.
Namely, in order to achieve the above object, the technological scheme that compressor of the present invention adopts is following compressor: the housing possessing receive compression machine rotor, be connected to compressor main body suction port suction passage and be connected to the discharge duct of exhaust port of above-mentioned compressor main body, by the driving mechanism be connected with the rotor shaft of above-mentioned compressor rotor, this compressor drum rotated and suck fluid from above-mentioned suction passage via above-mentioned suction port, via above-mentioned exhaust port, the fluid after compression being discharged to above-mentioned discharge duct.And, this compressor is provided with: dry gas seal portion, has and to be disposed between above-mentioned housing with above-mentioned rotor shaft and the rotating ring being located in above-mentioned rotor shaft and the stationary ring that can be configured with abutting with the perpendicular end surface being approximately perpendicular to above-mentioned rotating ring of above-mentioned rotor shaft by elastic member; Sealing gas supply line, connects the space of perpendicular end surface that can abut with above-mentioned stationary ring and the supply source of sealing gas that comprise above-mentioned rotating ring; Drain line (Off レ ア ラ イ Application) connection space, is positioned at the axial space of above-mentioned rotor leaning on the position of drive mechanism side than above-mentioned dry gas seal portion; Drain line, connects above-mentioned drain line connection space and space outerpace; Drain line branch flow passage, collaborates this drain line again from above-mentioned drain line branch; Safety valve, in above-mentioned drain line branch flow passage, if the pressure of the upstream side of this drain line branch flow passage becomes more than authorized pressure, valve opening.
According to compressor of the present invention, even if the damage, breakage etc. in above-mentioned dry gas seal portion cause the rising of the pressure of drain line very sharply, there occurs delay when the stopping of the compressor based on the force value detected by pressure meter, also make the pressure in above-mentioned drain line can not exceed pressure to this safety valve setting by making above-mentioned Investigation on safety valve.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the compressor of embodiments of the present invention.
Embodiment
Below, the compressor of embodiments of the present invention is described with reference to accompanying drawing 1.Fig. 1 is the structural drawing of the compressor of embodiments of the present invention.Compressor 1 of the present invention uses nitrogen, namely as the compressor of the gas use nitrogen of compressed object as working gas.In addition, for the shaft sealing of this compressor 1, dry gas seal is adopted as described later.In addition, this compressor 1 is that its compressor drum (solid of rotation) 3 adopts the centrifugal compressor of impeller (blade) as described later.
In the compressor 1 of embodiments of the present invention, as this compressor 1 major part and possess housing 2, be accommodated in the compressor drum (solid of rotation) 3 in this housing 2 and be used for transmitting the booster engine 4 of rotating force to this compressor drum (solid of rotation) 3.In addition, booster engine 4 is engaged by driven pinion (small gear) 4a with active gearwheel (gearwheel) (not shown) and forms.On the axle of this active gearwheel (gearwheel), be connected to the live axle of motor (not shown) via connector etc.The axle 4b of driven pinion 4a is combined with the rotor shaft 3a of compressor drum 3 integratedly.
In other words, booster engine 4 forms the driving mechanism being connected to the rotor shaft 3a of compressor drum (solid of rotation) 3.By this driving mechanism, compressor drum (solid of rotation) 3 is rotated, as described later, compressor 1 sucks working gas from suction passage 7 via suction port 5, is discharged by the working gas after compression via exhaust port 6 to discharge duct.
Compressor drum 3 is formed by utilizing tensioning bolt (not shown) and locking nut (not shown) to be fixed on rotor shaft 3a, so-called impeller (roughly cone shape impeller).And the rotation be configured to by compressor drum 3, sucks working gas from the suction port 5 of working gas of the tip portion being positioned at the impeller forming compressor drum 3.Rotation by compressor drum 3 is accelerated the working gas sucked from suction port 5.
Then, the working gas after acceleration is decelerated by diffuser (not shown) and is boosted, and is discharged by from exhaust port 6 via scroll casing portion (not shown).In addition, the suction port 5 of working gas is connected by suction passage 7 with the supply source of working gas, and in addition, the exhaust port 6 of working gas is connected by discharge duct 8 with the supply target of working gas.
Working gas also rises along with the rising of pressure, temperature.Thus, in discharge duct 8, be folded with for making the cooler 9 declined by the temperature of the working gas of this discharge duct 8.And then, be provided with from discharge duct 8 branch between this cooler 9 and the supply target of working gas, the branch flow passage 10 that collaborates with sealing gas supply line 18 described later.In branch flow passage 10, be folded with safety check 11(CV501), this safety check 11 only allow from the flowing towards the junction of two streams with sealing gas supply line 18 of the point of branching of discharge duct 8.
Around driven pinion 4a, be provided with dry gas seal portion 12, the boosted working gas by the rotation of compressor drum 3 can not be gone out to booster engine 4 side leakage by the back side of the impeller forming this compressor drum 3.Dry gas seal portion 12 comprises the rotating ring 12a and stationary ring 12c that rotate integratedly with rotor shaft 3a, described stationary ring 12c is configured on the position opposed with the perpendicular end surface being approximately perpendicular to axle 4b of this rotating ring 12a, and is disposed between housing 2 and rotor shaft 3a and is fixed via housing 2 and elastic member 12b.
In dry gas seal portion 12, under the state that compressor drum 3 is static, stationary ring 12c is connected to rotating ring 12a, forms sealing surface and prevents the outflow of working gas.In addition, in the perpendicular end surface of the rotating ring 12a in dry gas seal portion 12, namely opposed with stationary ring 12c face, usual spiral helicine groove (not shown) is formed.And, under the state that compressor drum 3 rotates, sealing gas flows in spiral helicine groove, between rotating ring 12a and stationary ring 12c, form small gap, in the gap that this is small, form the sealing surface formed by sealing gas, also prevent the outflow of working gas.
On the other hand, in the space around the rotor shaft 3a leaning on booster engine 4 side than dry gas seal portion 12, drain line connection space 13 and oil resistance part 14 is provided with.Drain line connection space 13 is and the space being used for the stream of the gas exhaust leaked from dry gas seal portion 12, i.e. drain line 16 described later to be communicated with.
In addition, oil resistance part 14 is formed in the space in the neutral position of labyrinth 15a, 15b, is communicated with measuring instrument air flow path 17 described later.By from measuring instrument air flow path 17 by measuring instrument air Injection in oil resistance part 14, make the internal pressure of oil resistance part 14 increase, prevent the lubricant oil of booster engine 4 from going out to dry gas seal portion 12 side leakage.
Further, the sealing gas supply line 18 for supplying sealing gas to dry gas seal portion 12 is provided with.One end of sealing gas supply line 18 with so that the mode of sealing gas and the spatial joins containing this perpendicular end surface can be supplied to the perpendicular end surface of the rotating ring 12a in formula gas seal portion 12, namely opposed with stationary ring 12c face.In addition, the other end of sealing gas supply line 18 is connected with the supply source of sealing gas.
In the supply line 18 of sealing gas, be folded with for detecting by the pressure meter 19(PT2700 of the pressure of the sealing gas of this stream), only allow safety check 20(CV507 from from sealing gas supply source to the flowing of compressor 1 side), be used for catching the small impurity be mixed into sealing gas filter 21a, 21b, also have the flow detecting sealing gas also as the flow controller 22(flowmeter FE2700 of throttle mechanism).
In addition, in above-mentioned filter, be provided with filter 21a and filter 21b side by side.Further, be provided with open and close valve 23,24 in the front and back of filter 21a, be provided with open and close valve 25,26 in the front and back of filter 21b.Further, the pressure difference meter 27(PdIS2700 of pressure difference being detected the upstream of filter 21a, 21b, the pressure in downstream is set near this filter 21a, 21b).Can according to by this pressure difference meter 27(PdIS2700) the pressure extent that detects and the situation of the clogging of acknowledged filter 21a, 21b.
Flowmeter 28(FI225 is folded with) in measuring instrument air flow path 17.Further, be provided with open and close valve 29,30, and then be provided with bypass flow path 32 in the front and back of this flowmeter 28, itself and flowmeter 28 are folded with open and close valve 31 side by side.When not flowing through measuring instrument air in measuring instrument air flow path 17, lubricant oil in booster engine 4 reaches dry gas seal portion 12 by labyrinth 15a, 15b of the front and back of oil resistance part 14, is likely damaged in dry gas seal portion 12.
This flowmeter 28(FI225) in order to confirm that measuring instrument air reliably flows to oil resistance part 14, prevent above-mentioned " breakage in dry gas seal portion 12 " in advance and arrange.When usual, make open and close valve 29,30 be standard-sized sheet, make open and close valve 31 for full cut-off, use flowmeter 28(FI225) confirm the flowing of measuring instrument air.At this flowmeter 28(FI225) maintenance time, after open and close valve 31 standard-sized sheet, by open and close valve 29,30 full cut-off, become measuring instrument air and do not flow to flowmeter 28(FI225) in state, carry out the operation of the maintenance of this flowmeter 28 etc.
In addition, stream, i.e. drain line 16 that the gas leakage being used for self-drying type gas seal portion 12 in future is vented are communicated with drain line connection space 13.In drain line 16, be folded with pressure meter 33(PT2717) and flowmeter 34(FI224).Further, be provided with open and close valve 35,36, and then be provided with bypass flow path 38 in the front and back of this flowmeter 34, itself and flowmeter 34 are folded with open and close valve 37 side by side.If to the pipe arrangement blocking that drain line 16, space outerpace (outdoor) communicate, then dry gas seal portion 12 is damaged, now, pressurized gas can not be vented safely, so be dangerous.
Flowmeter 34(FI224) be leakage (flowing) in order to confirm the sealing gas from dry gas seal portion 12 and prevent above-mentioned " blocking to the pipe arrangement that drain line 16, space outerpace (outdoor) communicate " from the leakage (flowing) of the measuring instrument air of oil resistance part 14, in advance and arrange.When usual, make that open and close valve 35,36 is standard-sized sheet, open and close valve 37 is full cut-off, by flowmeter 34(FI224) confirm the leakage (flowing) from the sealing gas in dry gas seal portion 12 and the leakage (flowing) from the measuring instrument air of oil resistance part 14.At flowmeter 34(FI224) maintenance time, after making open and close valve 37 standard-sized sheet, make open and close valve 35,36 full cut-off, become at flowmeter 34(FI224) in do not flow through the state of sealing gas or measuring instrument air, carry out the operation of the maintenance of this flowmeter 34 etc.
Further, be provided with from pressure meter 33(PT2717) and flowmeter 34(FI224) between drain line 16 branch, again collaborate to this drain line 16(be more particularly than the bypass flow path 38 junction of two streams drain line 16 downstream with drain line 16) drain line branch flow passage 39.Further, in this drain line branch flow passage 39, if the pressure being provided with the upstream side of this drain line branch flow passage 39 becomes more than authorized pressure, the safety valve 40 of valve opening.In addition, the pressure of the upstream side of drain line branch flow passage 39 described here is the pressure of position by the drain line branch flow passage 39 of upstream side than being provided with safety valve 40.
Before the running of compressor 1, namely before making compressor drum 3 rotate, safety check 11(CV501 at branch flow passage 10) under the state of closing and at the safety check 20(CV507 of sealing gas supply line 18) under the state opened, supply sealing gas via sealing gas supply line 18 to dry gas seal portion 12 from the supply source of sealing gas.
And, if the pressure of the running beginning of compressor 1, discharge duct 8 becomes pressure than the upstream side of sealing gas supply line 18 such as by pressure meter 19(PT2700) pressure that detects is high, then at the safety check 11(CV501 of branch flow passage 10) under the state opened and at the safety check 20(CV507 of sealing gas supply line 18) under the state of closing, a part for working gas is supplied as sealing gas to dry gas seal portion 12 from the discharge duct 8 of working gas via branch flow passage 10.
In addition, when the upstream side of sealing gas supply line 18 is provided with the pump etc. for sending sealing gas, being configured to when by pressure meter 19(PT2700) pressure that detects is when becoming more than the force value of regulation, be judged as the pressure that the pressure (such as by pressure meter 19(PT2700) of the upstream side of the pressure ratio sealing gas supply line 18 of discharge duct 8 detects) high, by stoppings such as pumps.
This compressor 1 possess various be used for not producing the undesirable condition of the damage, breakage etc. in dry gas seal portion 12 interlocking mechanism and current interlocking mechanism when there occurs undesirable condition in dry gas seal 12.
Such as, in the running of compressor 1, when by flow controller 22(flowmeter FE2700) flow of sealing gas that detects is when becoming below the flow value of regulation, sent the alarm of this message by not shown emergency alarm.When the underfed of sealing gas, the formation of the sealing surface of sealing gas that utilizes in dry gas seal portion 12 becomes insufficient.Therefore, likely there is spilling of working gas, or according to circumstances, likely do not form sealing surface and become that rotating ring 12a under the state be connected on rotating ring 12a at stationary ring 12c rotates, dry gas seal portion 12 is damaged, damaged etc. undesirable condition.
Thus, in above-mentioned alarm, preferably comprise the instruction of following etc. the concrete countermeasure to worker: when the starting of compressor 1, when the pressure of discharge duct 8 is more than the pressure of the upstream side of sealing gas supply line 18, instruction worker confirms the state of the supply source of sealing gas, when the common running of compressor 1, when the pressure of the upstream side of the pressure ratio sealing gas supply line 18 of discharge duct 8 is high, instruction worker confirms the safety check 11(CV501 of branch flow passage 10) state whether normal etc.
In addition, when by pressure difference meter 27(PdIS2700) pressure difference that detects is when being more than the force value of regulation, by not shown emergency alarm send likely filter 21a, 21b certain in there occurs the alarm of clogging.Further, in this alarm, the display of the state of the clogging of instruction worker acknowledged filter 21a, 21b is preferably included.
And, being configured to when by the pressure meter 33(PT2717 be located in drain line 16) pressure that detects is when becoming more than the force value of regulation, regard the actual undesirable condition that there occurs damage, breakage etc. in dry gas seal portion 12 as, by not shown control gear, compressor 1 is stopped.And then as mentioned above, compressor 1 is at pressure meter 33(PT2717) and flowmeter 34(FI224) between drain line 16 in possess safety valve 40.
Therefore, by safety valve 40(PVC224), even if because the damage, breakage etc. in dry gas seal portion 12 causes the pressure of drain line 16 very rapidly to rise, based on by pressure meter 33(PT2717) stopping of the compressor 1 of force value that detects postpones, the pressure in drain line 16 also can not exceed this safety valve 40(PCV224) pressure that sets.
In addition, also can replace safety valve 40(PCV224) and arrange accept by pressure meter 33(PT2717) signal of pressure that detects the open and close valve opened rapidly when this pressure becomes more than specified value.
Claims (1)
1. a compressor,
Possess the housing of storage compressor drum, the suction passage be connected with the suction port of compressor main body and the discharge duct be connected with the exhaust port of above-mentioned compressor main body,
By the driving mechanism be connected with the rotor shaft of above-mentioned compressor rotor, this compressor drum rotated and suck fluid from above-mentioned suction passage via above-mentioned suction port, via above-mentioned exhaust port, the fluid after compressing is discharged to above-mentioned discharge duct,
It is characterized in that,
Be provided with:
Dry gas seal portion, has: to be disposed between above-mentioned housing with above-mentioned rotor shaft and the rotating ring arranged around above-mentioned rotor shaft and being configured to by the elastic member stationary ring that can abut with the perpendicular end surface substantially vertical with above-mentioned rotor shaft of above-mentioned rotating ring;
Sealing gas supply line, connects the space of perpendicular end surface that can abut with above-mentioned stationary ring and the supply source of sealing gas that comprise above-mentioned rotating ring;
Drain line connection space, is positioned at the axial space of above-mentioned rotor leaning on the position of drive mechanism side than above-mentioned dry gas seal portion;
Drain line, connects above-mentioned drain line connection space and space outerpace;
Be arranged at the flowmeter of above-mentioned drain line;
Drain line branch flow passage, collaborates this drain line at the upstream side of above-mentioned flowmeter again from above-mentioned drain line branch in the downstream side of above-mentioned flowmeter;
Safety valve, in above-mentioned drain line branch flow passage, if the pressure of the upstream side of this drain line branch flow passage becomes more than authorized pressure, valve opening.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010236553A JP5548094B2 (en) | 2010-10-21 | 2010-10-21 | Compressor |
| JP2010-236553 | 2010-10-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102454626A CN102454626A (en) | 2012-05-16 |
| CN102454626B true CN102454626B (en) | 2015-08-26 |
Family
ID=46038162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110320288.7A Expired - Fee Related CN102454626B (en) | 2010-10-21 | 2011-10-20 | Compressor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5548094B2 (en) |
| CN (1) | CN102454626B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI479080B (en) * | 2012-10-15 | 2015-04-01 | China Steel Corp | A device for injecting a seal gas into a liquid oxygen pump |
| JP6601832B2 (en) * | 2014-11-20 | 2019-11-06 | 三菱重工コンプレッサ株式会社 | Seal gas supply control method, seal gas supply control device, rotating machine |
| CN104806559B (en) * | 2015-04-08 | 2017-10-03 | 中国神华能源股份有限公司 | Feeding mechanism, Separate System of Water-jet and the encapsulating method of compressor seal gas |
| CN106640202B (en) * | 2016-12-24 | 2022-08-23 | 上海齐耀膨胀机有限公司 | Shaft seal device of high-temperature steam screw machine and pressure control method thereof |
| DE102018123728A1 (en) * | 2018-09-26 | 2020-03-26 | Man Energy Solutions Se | Supply system of a sealing system of a turbomachine and turbomachine with a sealing and supply system |
| CN114753890B (en) * | 2022-04-27 | 2023-10-24 | 重庆江增船舶重工有限公司 | Dry gas seal of supercritical carbon dioxide turbine and leakage monitoring method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08285087A (en) * | 1995-04-10 | 1996-11-01 | Nippon Pillar Packing Co Ltd | Shaft seal system |
| EP1128101A2 (en) * | 2000-02-24 | 2001-08-29 | John Crane UK Limited | Seal assemblies |
| JP2002013645A (en) * | 2000-06-29 | 2002-01-18 | Nippon Pillar Packing Co Ltd | Shaft seal device for liquefied gas |
| JP2004026039A (en) * | 2002-06-26 | 2004-01-29 | Takata Corp | Occupant leg protecting device |
| CN1499108A (en) * | 2003-10-09 | 2004-05-26 | 天津新技术产业园区鼎名密封有限公司 | General layout of dry type gas lock system |
| CN2878719Y (en) * | 2006-02-23 | 2007-03-14 | 约翰克兰鼎名密封(天津)有限公司 | Dry gas lock device for compressor for low entrance pressure liquid easily brought media |
| CN101158361A (en) * | 2007-09-28 | 2008-04-09 | 贵州宏福实业开发有限总公司 | Phosphoric acid axial-flow pump dry gas sealing device |
-
2010
- 2010-10-21 JP JP2010236553A patent/JP5548094B2/en not_active Expired - Fee Related
-
2011
- 2011-10-20 CN CN201110320288.7A patent/CN102454626B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08285087A (en) * | 1995-04-10 | 1996-11-01 | Nippon Pillar Packing Co Ltd | Shaft seal system |
| EP1128101A2 (en) * | 2000-02-24 | 2001-08-29 | John Crane UK Limited | Seal assemblies |
| JP2002013645A (en) * | 2000-06-29 | 2002-01-18 | Nippon Pillar Packing Co Ltd | Shaft seal device for liquefied gas |
| JP2004026039A (en) * | 2002-06-26 | 2004-01-29 | Takata Corp | Occupant leg protecting device |
| CN1499108A (en) * | 2003-10-09 | 2004-05-26 | 天津新技术产业园区鼎名密封有限公司 | General layout of dry type gas lock system |
| CN2878719Y (en) * | 2006-02-23 | 2007-03-14 | 约翰克兰鼎名密封(天津)有限公司 | Dry gas lock device for compressor for low entrance pressure liquid easily brought media |
| CN101158361A (en) * | 2007-09-28 | 2008-04-09 | 贵州宏福实业开发有限总公司 | Phosphoric acid axial-flow pump dry gas sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5548094B2 (en) | 2014-07-16 |
| CN102454626A (en) | 2012-05-16 |
| JP2012087724A (en) | 2012-05-10 |
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