CN108980356A - The mechanically-sealing apparatus of cryogenic liquid pump - Google Patents
The mechanically-sealing apparatus of cryogenic liquid pump Download PDFInfo
- Publication number
- CN108980356A CN108980356A CN201811092231.4A CN201811092231A CN108980356A CN 108980356 A CN108980356 A CN 108980356A CN 201811092231 A CN201811092231 A CN 201811092231A CN 108980356 A CN108980356 A CN 108980356A
- Authority
- CN
- China
- Prior art keywords
- ring
- sealing
- bellows
- cryogenic liquid
- mechanically
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 41
- 239000007788 liquid Substances 0.000 title claims abstract description 33
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000010419 fine particle Substances 0.000 abstract description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
The present invention relates to a kind of mechanically-sealing apparatus of cryogenic liquid pump, including the pump housing and it is mounted on intrinsic rotating ring, stationary ring, sealing ring, sealing ring and bellows, the rotating ring is mounted in the axis hole of the pump housing and circumferentially links with intracorporal shaft is pumped, the stationary ring is mounted on the periphery of shaft, the stationary ring include outer ring and with the integrally formed left inside ring of outer ring and right inner ring, form step groove between the outer ring and left inside ring and right inner ring.The invention has the advantages that by adding bellows, not only make elastic element but also play the role of sealing, there is no need to design the dynamic auxiliary seal of general throw-out collar type spring machine envelope, the obstruction of fine particle caused by due to dynamic auxiliary seal is avoided, dynamic auxiliary seal non-refractory and reduces sealing compensation ability because it leads to the problem of axial rub resistance.
Description
Technical field
The present invention relates to a kind of mechanically-sealing apparatus of cryogenic liquid pump, liquid oxygen, liquid nitrogen, liquid argon, LNG, the rare gas of liquefaction
The production such as body and industry, the mechanical seal processing industry etc. using unit with cryogenic liquid pump, can be widely applied.
Background technique
Cryogenic liquid pump (abbreviation cryogenic pump) is to be used to transporting low temperature liquid (such as liquid in petroleum, space division and chemical plant installations
Oxygen, liquid nitrogen, liquid argon, liquid hydrocarbon and liquefied natural gas etc.) specific pump.Its purposes is the place that cryogenic liquid is low from pressure
It is transported to the high place of pressure.With the development of spatial division technology, cryogenic liquid is widely used and develops.It is in space division
Main function in equipment are as follows: be used for liquid circulation；Liquid, which is extracted, from storage tank and is pressed into vaporizer (is sent into and uses after vaporization
Family).
Since the medium of cryogenic liquid pump conveying is cryogenic liquid, low temperature must be kept in medium transmission process, if low
Warm medium absorbs the more heat in part through liquid pump side, and the cryogenic liquid in pump vaporizes part, generates bulk gas, thus
Influence the normal operation of pump.Therefore the particular/special requirement structure, material, installation and operation etc. of cryogenic pump being proposed.
According to the difference of working principle, cryogenic pump is broadly divided into reciprocating and centrifugal two class.Referred to herein is centrifugal
Cryogenic liquid pump.Cryogenic liquid pump generally uses mechanical sealing mechanism.
Cryogenic liquid has the characteristic that temperature is low, easily vaporizes, and discontinuous operation cryogenic liquid pump start and stop are frequent, and machinery is close
Envelope is often in mechanical seal damage in the fluctuation expanded with heat and contract with cold, is caused frequently, and consumption is larger, cost increase, this problem
Cryogenic liquid production, the enterprises such as use there is generality.
Summary of the invention
To overcome the shortcomings of existing technologies, the present invention provides a kind of mechanically-sealing apparatus of cryogenic liquid pump, of the invention
Technical solution is:
The mechanically-sealing apparatus of cryogenic liquid pump, including the pump housing and it is mounted on intrinsic rotating ring, stationary ring, sealing ring, close
Seal and bellows, the rotating ring are mounted in the axis hole of the pump housing and circumferentially link with intracorporal shaft is pumped, the stationary ring peace
Mounted in the periphery of shaft, the stationary ring include outer ring and with the integrally formed left inside ring of outer ring and right inner ring, it is described outer
Step groove is formed between ring and left inside ring and right inner ring, the outer diameter of the right inner ring is less than the outer diameter of left inside ring, described
Bellows seal is welded in right inner ring, after the bellows sequentially passes through left inner ring and outer rings, the right end of the bellows with
The dynamic cooperation of the bellows seal, the left end of the bellows are equipped with a sealing ring, the sealing ring and left inside ring it
Between a sealing ring is installed；The rotating ring is pushed by being mounted on the intracorporal spring of pump, is bonded rotating ring each other with sealing ring
And it relatively moves.
The stationary ring and rotating ring is process using stainless steel round steel.
The bellows is made using stainless steel tube.
The sealing ring uses fluorubber compression moulding.
The invention has the advantages that not only having made elastic element by adding bellows but also having played the role of sealing, there is no need to set
The dynamic auxiliary seal for counting general throw-out collar type spring machine envelope, avoids fine particle caused by due to dynamic auxiliary seal
Obstruction, dynamic auxiliary seal non-refractory and reduces sealing compensation ability because it leads to the problem of axial rub resistance.
Detailed description of the invention
Fig. 1 is agent structure schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of stationary ring in Fig. 1.
Specific embodiment
The invention will now be further described with reference to specific embodiments, the advantages and features of the present invention will be with description and
It is apparent.But examples are merely exemplary for these, and it is not intended to limit the scope of the present invention in any way.Those skilled in the art
Member it should be understood that without departing from the spirit and scope of the invention can details to technical solution of the present invention and form into
Row modifications or substitutions, but these modifications and replacement are fallen within the protection scope of the present invention.
Referring to Fig. 1 and Fig. 2, the present invention relates to a kind of mechanically-sealing apparatus of cryogenic liquid pump, including the pump housing and installation
In intrinsic rotating ring 5, stationary ring 1, sealing ring 4, sealing ring 3 and bellows 2, the rotating ring peace 5 is mounted in the axis hole of the pump housing
Interior and circumferentially link with intracorporal shaft is pumped, the stationary ring 1 is mounted on the periphery of shaft, the stationary ring 1 include outer ring and
With the integrally formed left inside ring of outer ring and right inner ring, step is formed between the outer ring 12 and left inside ring 11 and right inner ring
Slot, the outer diameter of the right inner ring are less than the outer diameter of left inside ring, bellows seal, the wave are welded in the right inner ring
After line pipe sequentially passes through left inner ring and outer rings, the right end of the bellows 2 and the dynamic cooperation of the bellows seal, the bellows 2
Left end one sealing ring 3 is installed, a sealing ring 4 is installed between the sealing ring 3 and left inside ring；The rotating ring 5 is logical
It crosses and is mounted on the intracorporal spring promotion of pump, rotating ring 5 is made to be bonded and relatively move each other with sealing ring 4.
The stationary ring 1 and rotating ring 5 are process using stainless steel round steel.
The bellows 2 is made using stainless steel tube.
The sealing ring 3 uses fluorubber compression moulding.
Resin graphite linings and metal stone layer of ink are sequentially coated on the sealing ring 4.
The present invention adjusts the position of stationary ring, realizes to mechanical seal ripple by adding bellows and sealing ring
The release of tubular elastic stroke, the free travel of bellows increase, while increasing rotating ring and dock the pressing force of end face with stationary ring,
Increase the abrasion distance of sealing ring.
Claims (4)
1. the mechanically-sealing apparatus of cryogenic liquid pump, which is characterized in that including the pump housing and be mounted on intrinsic rotating ring, quiet
Ring, sealing ring, sealing ring and bellows, the rotating ring are mounted in the axis hole of the pump housing and circumferentially join with intracorporal shaft is pumped
Dynamic, the stationary ring is mounted on the periphery of shaft, the stationary ring include outer ring and with the integrally formed left inside ring of outer ring and the right side
Inner ring, forms step groove between the outer ring and left inside ring and right inner ring, the outer diameter of the right inner ring is less than left inside ring
Outer diameter is welded with bellows seal, after the bellows sequentially passes through left inner ring and outer rings, the wave in the right inner ring
The right end of line pipe and the dynamic cooperation of the bellows seal, the left end of the bellows is equipped with a sealing ring, in the sealing
A sealing ring is installed between circle and left inside ring；The rotating ring is pushed by being mounted on the intracorporal spring of pump, makes rotating ring and sealing
Lantern ring is bonded and relatively moves each other.
2. the mechanically-sealing apparatus of cryogenic liquid pump according to claim 1, which is characterized in that the stationary ring and rotating ring
It is process using stainless steel round steel.
3. the mechanically-sealing apparatus of cryogenic liquid pump according to claim 1, which is characterized in that the bellows uses
Stainless steel tube is made.
4. the mechanically-sealing apparatus of cryogenic liquid pump according to claim 2 or 3, which is characterized in that the sealing ring
Using fluorubber compression moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811092231.4A CN108980356A (en) | 2018-09-19 | 2018-09-19 | The mechanically-sealing apparatus of cryogenic liquid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811092231.4A CN108980356A (en) | 2018-09-19 | 2018-09-19 | The mechanically-sealing apparatus of cryogenic liquid pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108980356A true CN108980356A (en) | 2018-12-11 |
Family
ID=64546379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811092231.4A Pending CN108980356A (en) | 2018-09-19 | 2018-09-19 | The mechanically-sealing apparatus of cryogenic liquid pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108980356A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201068884Y (en) * | 2007-06-08 | 2008-06-04 | 成都西部石油装备有限公司 | Sand pump mechanical sealing for slurry in petroleum solid control apparatus |
| CN201221491Y (en) * | 2008-05-20 | 2009-04-15 | 宁波东联密封件有限公司 | Mechanical sealing device |
| CN201535272U (en) * | 2009-11-05 | 2010-07-28 | 刘明义 | Special corrugated pipe mechanical seal for high-speed pump |
| CN202707588U (en) * | 2012-06-14 | 2013-01-30 | 宁波伏尔肯机械密封件制造有限公司 | Silicon carbide mechanical seal device for marine pump |
| CN205978468U (en) * | 2016-08-30 | 2017-02-22 | 温州市正一机械密封件有限公司 | Bellows mechanical seal member |
| CN206958260U (en) * | 2017-05-13 | 2018-02-02 | 宁波江东汉歌水泵密封技术有限公司 | Rubber bellows mechanical seal structure |
| CN206988169U (en) * | 2017-06-14 | 2018-02-09 | 光大水务（淄博）有限公司 | Centrifugal submersible pumps mechanically-sealing apparatus |
| CN207246094U (en) * | 2017-07-28 | 2018-04-17 | 丹东克隆集团有限责任公司 | Low temperature mechanical sealing device used for pump |
| CN207539080U (en) * | 2017-11-14 | 2018-06-26 | 温岭市天湖机械密封件厂 | A kind of auto pump mechanical sealing member |
| CN208816684U (en) * | 2018-09-19 | 2019-05-03 | 龙口矿业集团有限公司 | The mechanically-sealing apparatus of cryogenic liquid pump |
-
2018
- 2018-09-19 CN CN201811092231.4A patent/CN108980356A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201068884Y (en) * | 2007-06-08 | 2008-06-04 | 成都西部石油装备有限公司 | Sand pump mechanical sealing for slurry in petroleum solid control apparatus |
| CN201221491Y (en) * | 2008-05-20 | 2009-04-15 | 宁波东联密封件有限公司 | Mechanical sealing device |
| CN201535272U (en) * | 2009-11-05 | 2010-07-28 | 刘明义 | Special corrugated pipe mechanical seal for high-speed pump |
| CN202707588U (en) * | 2012-06-14 | 2013-01-30 | 宁波伏尔肯机械密封件制造有限公司 | Silicon carbide mechanical seal device for marine pump |
| CN205978468U (en) * | 2016-08-30 | 2017-02-22 | 温州市正一机械密封件有限公司 | Bellows mechanical seal member |
| CN206958260U (en) * | 2017-05-13 | 2018-02-02 | 宁波江东汉歌水泵密封技术有限公司 | Rubber bellows mechanical seal structure |
| CN206988169U (en) * | 2017-06-14 | 2018-02-09 | 光大水务（淄博）有限公司 | Centrifugal submersible pumps mechanically-sealing apparatus |
| CN207246094U (en) * | 2017-07-28 | 2018-04-17 | 丹东克隆集团有限责任公司 | Low temperature mechanical sealing device used for pump |
| CN207539080U (en) * | 2017-11-14 | 2018-06-26 | 温岭市天湖机械密封件厂 | A kind of auto pump mechanical sealing member |
| CN208816684U (en) * | 2018-09-19 | 2019-05-03 | 龙口矿业集团有限公司 | The mechanically-sealing apparatus of cryogenic liquid pump |
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