CN102536806A - Magnetic-force driven sliding-vane pump for conveying liquefied natural gas - Google Patents
Magnetic-force driven sliding-vane pump for conveying liquefied natural gas Download PDFInfo
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- CN102536806A CN102536806A CN2012100277477A CN201210027747A CN102536806A CN 102536806 A CN102536806 A CN 102536806A CN 2012100277477 A CN2012100277477 A CN 2012100277477A CN 201210027747 A CN201210027747 A CN 201210027747A CN 102536806 A CN102536806 A CN 102536806A
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- natural gas
- liquefied natural
- central shaft
- slide plate
- vane pump
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Abstract
The invention discloses a magnetic-force driven sliding-vane pump for conveying liquefied natural gas, which comprises a central shaft, a front cover plate, a rear cover plate, an inner magnetic rotor, an outer magnetic rotor and an isolating sleeve, wherein the central shaft is surrounded by both the front cover plate and the rear cover plate, the central shaft is surrounded by the inner magnetic rotor, the inner magnetic rotor is fixedly connected with the central shaft, the inner magnetic rotor is surrounded by the outer magnetic rotor, the isolating sleeve is arranged between the inner magnetic rotor and the outer magnetic rotor, and a sealing gasket is arranged between the isolating sleeve and the front cover plate. In the conveying process of the liquefied natural gas, a medium and the inner magnetic rotor are completely isolated from the outside by the isolating sleeve, meanwhile, the medium and the inner magnetic rotor are also isolated from the outer magnetic rotor, and the torque of the medium is transferred and conveyed under the actions that unlike poles attract and like poles repel of a magnetic material between the inner magnetic rotor and the outer magnetic rotor. Static sealing between the pump and the medium is realized by the isolating sleeve, the structure of the magnetic-force driven sliding-vane pump is safe and reliable, and the possibility of medium leakage is decreased and even can be prevented, thereby unsafe factors in the conveying process of the liquefied natural gas are effectively decreased, and the safety and the reliability of the pump in the operating process are improved.
Description
Technical field
The present invention relates to LNG Liquefied natural gas conveying technology field, particularly relate to a kind of magneto drive sliding vane pump that is used for LNG Liquefied natural gas.
Background technique
Rock gas is more and more favored as clean energy resource, and a lot of countries all classify LNG (LNG Liquefied natural gas) as preferred fuels, and the ratio of rock gas in energy supply increases sharply.LNG Liquefied natural gas becomes the whole world and increases one of the swiftest and the most violent energy industry just with the rapid growth in every year about 12%.The production of global LNG and trade in recent years is active day by day, and LNG has become rare cleaning resource, is becoming the new focus of world's oil and gas industry.Carry at present the extensive use of project along with LNG Liquefied natural gas, it is carried just needs a large amount of pumps, and at present used all are pump with mechanical seals, mostly its technology is to tend to equipment of import, and the application of home equipment still is a blank.
Pump with mechanical seal is a kind of motive sealing pump, the possibility of in running, exist leaking, and there is unsafe factor in the transportation for this inflammable, explosive medium of LNG Liquefied natural gas, comes potential safety hazard to conveyor belt.
Therefore, how reducing leakage appears in transfer pump in the LNG Liquefied natural gas course of conveying possibility, improve the safety reliability of LNG Liquefied natural gas course of conveying, is the present technical issues that need to address of those skilled in the art.
Summary of the invention
The purpose of this invention is to provide a kind of magneto drive sliding vane pump that LNG Liquefied natural gas is carried that is used for, this magneto drive sliding vane pump can effectively reduce leakage appears in LNG Liquefied natural gas in course of conveying possibility, improves the safety reliability of LNG Liquefied natural gas course of conveying.
For realizing the foregoing invention purpose; The present invention provides a kind of magneto drive sliding vane pump that LNG Liquefied natural gas is carried that is used for; Comprise central shaft, all around the front shroud and the back shroud of said central shaft; And around said central shaft and the interior magnet rotor that is fixedly connected with said central shaft with around the outer magnet rotor of magnet rotor in said, also comprise be located at said in separation sleeve between magnet rotor and the said outer magnet rotor, be provided with sealing gasket between this separation sleeve and the said front shroud.
Preferably, be equipped with sealing gasket or seal ring between the pump housing of said magneto drive sliding vane pump and said front shroud and the said back shroud.
Preferably; Connect through first sliding bearing between said front shroud and the said central shaft; Be connected through second sliding bearing between said back shroud and the said central shaft, said first sliding bearing and said second sliding bearing include silicon carbide inner ring and silicon carbide outer ring.
Preferably, comprise rotor that is fixedly connected with said central shaft and the eccentric bush that is fixedly connected with the said pump housing, said rotor is provided with slideway, is provided with the slide plate that the inwall with said eccentric bush offsets in this slideway, and said slide plate is provided with lubrication groove.
Preferably, said lubrication groove extends along the thickness direction of said slide plate.
Preferably, said lubrication groove comprises first groove and second groove, and said first groove is located at the end that said slide plate and said eccentric bush offset, and said second groove is located on the said slide plate sidewall adjacent with said slideway.
Preferably, the number of said second groove is two or more, and each said second groove is arranged in order along the glide direction of said slide plate.
Magneto drive sliding vane pump provided by the present invention; Be used for LNG Liquefied natural gas conveying engineering project; Comprise central shaft, all around the front shroud and the back shroud of said central shaft; And around said central shaft and the interior magnet rotor that is fixedly connected with said central shaft with around the outer magnet rotor of magnet rotor in said, also comprise be located at said in separation sleeve between magnet rotor and the said outer magnet rotor, be provided with sealing gasket between this separation sleeve and the said front shroud.In the LNG Liquefied natural gas course of conveying; Separation sleeve is isolated from the outside medium and interior magnet rotor fully; Also medium and interior magnet rotor are isolated with outer magnet rotor simultaneously, between interior magnet rotor and the outer magnet rotor through the heteropole of magnetic material inhale mutually, the effect of homopolar-repulsion, the moment of torsion of transmission fed sheet of a media.Separation sleeve is realized static seal between pump and the medium, and its structural safety is reliable, reduces even can stop to occur the possibility of dielectric leakage, thereby effectively reduce the unsafe factor in the LNG Liquefied natural gas course of conveying, improves the safety reliability of pump in running.
A kind of preferred embodiment in; Connect through first sliding bearing between said front shroud and the said central shaft; Be connected through second sliding bearing between said back shroud and the said central shaft, said first sliding bearing and said second sliding bearing include silicon carbide inner ring and silicon carbide outer ring.During the work of magneto drive sliding vane pump; Front shroud is fixedly connected with the outer ring of first sliding bearing with second sliding bearing respectively with back shroud; Central shaft is fixedly connected with the inner ring of first sliding bearing with second sliding bearing respectively, and the working life of pump can effectively be improved in silicon carbide inner ring and outer ring, reduces the replacing frequency of sliding bearing; Reduce the maintenance cost of sliding vane pump, reduce the operating cost in the LNG Liquefied natural gas course of conveying simultaneously.
In another preferred embodiment; Magneto drive sliding vane pump provided by the present invention comprises rotor that is fixedly connected with said central shaft and the eccentric bush that is fixedly connected with the said pump housing; Said rotor is provided with slideway; Be provided with the slide plate that the inwall with said eccentric bush offsets in this slideway, said slide plate is provided with lubrication groove.During rotor rotation; Drive slide plate and in eccentric bush, rotate, offer lubrication groove on the slide plate after, can storage medium in the lubrication groove; In the effect of playing effectively lubricating between slide plate and the slideway inwall and/or between the inwall of slide plate and eccentric bush; Thereby effectively reduce the friction between slide plate and slideway inwall and the eccentric bush inwall, reduce the wearing and tearing of slide plate, improve the working life of slide plate.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of magneto drive sliding vane pump provided by the present invention;
Fig. 2 is the plan view of magneto drive sliding vane pump shown in Figure 1;
Fig. 3 is the partial enlarged drawing of A part among Fig. 2;
Fig. 4 is the structural representation of a kind of embodiment of slide plate provided by the present invention.
Embodiment
Core of the present invention provides a kind of magneto drive sliding vane pump that LNG Liquefied natural gas is carried that is used for, and this magneto drive sliding vane pump can effectively reduce leakage appears in LNG Liquefied natural gas in course of conveying possibility, improves the safety reliability of LNG Liquefied natural gas course of conveying.
In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a kind of embodiment of magneto drive sliding vane pump provided by the present invention; Fig. 2 is the plan view of magneto drive sliding vane pump shown in Figure 1.
As shown in Figure 1; Magneto drive sliding vane pump provided by the present invention; Be used for LNG Liquefied natural gas conveying engineering project, comprise central shaft 1, all around the front shroud 2 and the back shroud 3 of central shaft 1, and around central shaft 1 and the interior magnet rotor 4 that is fixedly connected with central shaft 1 with around the outer magnet rotor 5 of interior magnet rotor 4; Also comprise the separation sleeve of being located between interior magnet rotor 4 and the outer magnet rotor 56, be provided with sealing gasket 7 between this separation sleeve 6 and the front shroud 2.In the LNG Liquefied natural gas course of conveying, power unit (like motor) transfers torque on the outer magnet rotor 5 through the deceleration of transmission part (like belt pulley 9); Go back transmission shaft 10 in the magneto drive sliding vane pump; Wherein, belt pulley 9 all is fixed on the transmission shaft 10 with outer magnet rotor 5, this transmission shaft 10 by roller bearings on suspension 11; Outer magnet rotor 5 is delivered to moment of torsion on the interior magnet rotor 4 through the magnetic force coupling.
Except interior magnet rotor 4 and magnet rotor 5, sliding vane pump also comprises rotor 12, and interior magnet rotor 4 is fixedly connected on the central shaft with rotor 12, drives rotor 12 rotation actings through interior magnet rotor 4.Slide plate 13 is installed in the slideway of rotor 12, and the pump housing 14 internal fixation of magneto drive sliding vane pump are equipped with eccentric bush 15, and rotor 12 surfaces constitute crescent-shaped space with eccentric bush 15 internal surfaces.Slide plate 13 relies on action of centrifugal force to be close to the inner chamber of eccentric bush 15 during rotor 12 rotations; When the preceding half way around of rotor 12, the space that adjacent two slide plates 13 are surrounded increases gradually, forms vacuum; Suck liquid; And when the back half way around of rotor 12, this space reduces gradually, just liquid is expressed to discharge tube.Pump medium through the change in volume that forms inner chamber during rotor 12 rotations, reach the purpose of fed sheet of a media.
Because separation sleeve 6 is isolated from the outside medium and interior magnet rotor 4 fully; Also medium and interior magnet rotor 4 are isolated with outer magnet rotor 5 simultaneously; Between interior magnet rotor 4 and the outer magnet rotor 5 through the heteropole of magnetic material inhale mutually, the effect of homopolar-repulsion, transmit the moment of torsion of fed sheet of a media.Separation sleeve 6 is realized static seal between pumps and the medium, and its structural safety is reliable, reduces possibility that dielectric leakage occurs, thereby effectively reduces even can stop the unsafe factor in the LNG Liquefied natural gas course of conveying, the safety reliability of raising pump in running.
In a kind of concrete mode of execution, be equipped with sealing gasket or seal ring between the pump housing 14 of magneto drive sliding vane pump and front shroud 2 and the back shroud 3.Seal ring or sealing gasket can further improve the sealability between the pump housing 14 and front shroud 2, the back shroud 3; Further reduce to occur the possibility of dielectric leakage; Thereby effectively reduce the unsafe factor in the LNG Liquefied natural gas course of conveying, improve the safety reliability of pump in running.
A kind of preferred embodiment in; Connect through first sliding bearing 16 between front shroud 2 and the central shaft 1; Be connected through second sliding bearing 17 between back shroud 3 and the central shaft 1, first sliding bearing 16 and second sliding bearing 17 include silicon carbide inner ring and silicon carbide outer ring.During the work of magneto drive sliding vane pump; Front shroud 2 is fixedly connected with the outer ring of first sliding bearing 16 and second sliding bearing 17 respectively with back shroud 3; Central shaft 1 is fixedly connected with the inner ring of first sliding bearing 16 and second sliding bearing 17 respectively, and the working life of pump can effectively be improved in silicon carbide inner ring and outer ring, reduces the replacing frequency of sliding bearing; Reduce the maintenance cost of sliding vane pump, simultaneously reduce the operating cost in the LNG Liquefied natural gas course of conveying.
Can do to improve further to above-mentioned magneto drive sliding vane pump.
Please refer to Fig. 3 and Fig. 4, Fig. 3 is the partial enlarged drawing of A part among Fig. 2; Fig. 4 is the structural representation of a kind of embodiment of slide plate provided by the present invention, and dotted line is depicted as the border of lubrication groove among the figure.
In another preferred embodiment, in the magneto drive sliding vane pump provided by the present invention, rotor 12 is provided with slideway, is provided with the slide plate 13 that the inwall with eccentric bush 15 offsets in this slideway, and slide plate 13 is provided with lubrication groove 18.When rotor 12 rotates, drive slide plate 13 and in eccentric bush 15, rotate, offer lubrication groove 18 on the slide plate 13 after; Can storage medium in the lubrication groove 18; Play the effect of effectively lubricating between slide plate 13 and the slideway inwall and/or between the inwall of slide plate 13 and eccentric bush 15, thereby effectively reducing the friction between slide plate 13 and slideway inwall and eccentric bush 15 inwalls, reducing the wearing and tearing of slide plate 13; Improve the working life of slide plate 13, reduce the operating cost of sliding vane pump.
Simultaneously, the slide plate 13 of selflubricating formula can effectively reduce the frequency that operator safeguard sliding vane pump, reduces the maintenance cost of sliding vane pump.
Further; Lubrication groove 18 can extend along the thickness direction of slide plate 13; Make the medium in the lubrication groove 18 can be, lubricate the lubrication effect of amplified medium all forming between the inwall of slide plate 13 and slideway and/or between the inwall of slide plate 13 and eccentric bush 15 comprehensively along the circulation of the thickness direction of slide plate 13; Further reduce surface friction drag, prolong the working life of slide plate 13.
In a kind of concrete mode of execution, lubrication groove 18 comprises that first groove 181 and second groove, 182, the first grooves 181 are located at the end that slide plate 13 and eccentric bush 15 offset, and second groove 182 is located on slide plate 13 sidewall adjacent with slideway.During the work of magneto drive sliding vane pump; Slide plate 13 rotates with rotor 12, and the inwall of its end and eccentric bush 15 offsets, and and inwall between form sliding friction; The end that offsets at slide plate 13 and eccentric bush 15 is provided with first groove 181; Make lubricant medium effectively lubricating between inwall and slide plate 13 ends, reduce the friction between slide plate 13 and the eccentric bush 15, prolong the working life of slide plate 13.
Simultaneously, slide plate 13 offsets with eccentric bush 15 under the centrifugal action of rotor 12, and when slide plate 13 produces wearing and tearing, slide plate 13 can produce with slideway and relatively move, and offsets in eccentric bush 15 all the time keeping.At slide plate 13 sidewalls adjacent second groove 182 is set, can reduces the frictional force between slide plate 13 and the slideway inwall with the slideway inwall.
Particularly, the number of second groove 182 is two or more, and each second groove 182 is arranged in order along the glide direction of slide plate 13.Two or more second grooves 182 can further reduce the frictional force of slide plate 13 and slideway inwall along the lubricated successively slide plate 13 of the direction that slide plate 13 slides, and prolong the working life of slide plate 13.
More than be used for the magneto drive sliding vane pump that LNG Liquefied natural gas carries and carried out detailed introduction provided by the present invention.Used concrete example among this paper principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (7)
1. one kind is used for the magneto drive sliding vane pump that LNG Liquefied natural gas is carried; Comprise central shaft, all around the front shroud and the back shroud of said central shaft; And around said central shaft and the interior magnet rotor that is fixedly connected with said central shaft with around the outer magnet rotor of magnet rotor in said; It is characterized in that, also comprise the separation sleeve of being located between said interior magnet rotor and the said outer magnet rotor, be provided with sealing gasket between this separation sleeve and the said front shroud.
2. the magneto drive sliding vane pump that is used for the LNG Liquefied natural gas conveying according to claim 1 is characterized in that, is equipped with sealing gasket or seal ring between the pump housing of said magneto drive sliding vane pump and said front shroud and the said back shroud.
3. the magneto drive sliding vane pump that is used for the LNG Liquefied natural gas conveying according to claim 1; It is characterized in that; Connect through first sliding bearing between said front shroud and the said central shaft; Be connected through second sliding bearing between said back shroud and the said central shaft, said first sliding bearing and said second sliding bearing include silicon carbide inner ring and silicon carbide outer ring.
4. according to claim 2 or the 3 described magneto drive sliding vane pumps that are used for the LNG Liquefied natural gas conveying; It is characterized in that; Comprise rotor that is fixedly connected with said central shaft and the eccentric bush that is fixedly connected with the said pump housing; Said rotor is provided with slideway, is provided with the slide plate that the inwall with said eccentric bush offsets in this slideway, and said slide plate is provided with lubrication groove.
5. the magneto drive sliding vane pump that is used for the LNG Liquefied natural gas conveying according to claim 4 is characterized in that, said lubrication groove extends along the thickness direction of said slide plate.
6. the magneto drive sliding vane pump that is used for the LNG Liquefied natural gas conveying according to claim 4; It is characterized in that; Said lubrication groove comprises first groove and second groove; Said first groove is located at the end that said slide plate and said eccentric bush offset, and said second groove is located on the said slide plate sidewall adjacent with said slideway.
7. the magneto drive sliding vane pump that is used for the LNG Liquefied natural gas conveying according to claim 6 is characterized in that the number of said second groove is two or more, and each said second groove is arranged in order along the glide direction of said slide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100277477A CN102536806A (en) | 2012-02-08 | 2012-02-08 | Magnetic-force driven sliding-vane pump for conveying liquefied natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100277477A CN102536806A (en) | 2012-02-08 | 2012-02-08 | Magnetic-force driven sliding-vane pump for conveying liquefied natural gas |
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| Publication Number | Publication Date |
|---|---|
| CN102536806A true CN102536806A (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100277477A Pending CN102536806A (en) | 2012-02-08 | 2012-02-08 | Magnetic-force driven sliding-vane pump for conveying liquefied natural gas |
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| CN (1) | CN102536806A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329251A (en) * | 2014-10-30 | 2015-02-04 | 江苏海天泵阀制造有限公司 | Miniature ultralow-temperature magnetism-driven gear pump |
| CN105179232A (en) * | 2015-10-23 | 2015-12-23 | 泊头市广腾机械设备制造有限公司 | Disc type magnetic connection chemical sliding vane pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2289084Y (en) * | 1996-08-21 | 1998-08-26 | 张子传 | Leakless magnetic pump |
| CN201137569Y (en) * | 2007-12-22 | 2008-10-22 | 陈涵霖 | Vane pump vane possessing oil tank |
| CN202500768U (en) * | 2012-02-08 | 2012-10-24 | 兰州海兰德泵业有限公司 | Magnetic-drive sliding vane pump for liquefied natural gas transportation |
-
2012
- 2012-02-08 CN CN2012100277477A patent/CN102536806A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2289084Y (en) * | 1996-08-21 | 1998-08-26 | 张子传 | Leakless magnetic pump |
| CN201137569Y (en) * | 2007-12-22 | 2008-10-22 | 陈涵霖 | Vane pump vane possessing oil tank |
| CN202500768U (en) * | 2012-02-08 | 2012-10-24 | 兰州海兰德泵业有限公司 | Magnetic-drive sliding vane pump for liquefied natural gas transportation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329251A (en) * | 2014-10-30 | 2015-02-04 | 江苏海天泵阀制造有限公司 | Miniature ultralow-temperature magnetism-driven gear pump |
| CN105179232A (en) * | 2015-10-23 | 2015-12-23 | 泊头市广腾机械设备制造有限公司 | Disc type magnetic connection chemical sliding vane pump |
| CN105179232B (en) * | 2015-10-23 | 2018-01-26 | 泊头市广腾机械设备制造有限公司 | Disc magnetic connects chemical industry sliding-vane pump |
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Application publication date: 20120704 |