CN101408192A - Double-mechanical sealing device in oil-gas mixed delivery pump - Google Patents
Double-mechanical sealing device in oil-gas mixed delivery pump Download PDFInfo
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- CN101408192A CN101408192A CNA2008101967469A CN200810196746A CN101408192A CN 101408192 A CN101408192 A CN 101408192A CN A2008101967469 A CNA2008101967469 A CN A2008101967469A CN 200810196746 A CN200810196746 A CN 200810196746A CN 101408192 A CN101408192 A CN 101408192A
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Abstract
The invention discloses an oil-gas mixture pump-purpose double mechanical seal device which can be used for a long term under superproportional gas-oil multiphase environment. The device comprises a set of internal mechanical seal and a set of external mechanical seal which are arranged between a pump body and a pump shaft and separate a cavity between the pump body and the pump shaft into a sealing cavity and a liquid sealing cavity; each set of mechanical seal comprises a transmission set, a moving ring and a static ring; the transmission set is fixed on the pump shaft; the moving ring is fixed on the transmission set; the static ring is fixed on the pump body; the transmission set is processed with an axial spring hole; one end of a spring in the spring hole pushes against the bottom of the spring hole, and the other end thereof pushes against the bottom of the moving ring, thereby causing the sealing surface of the moving ring to be tightly clung to the sealing surface of the static ring; the upper part and the lower part of the pump body are respectively provided with a liquid inlet and a liquid outlet which are communicated with the liquid sealing cavity; the static ring of the internal mechanical seal is provided with at least one through groove and at least one semi-circular groove at the inner edge of the sealing surface; and the external circumferential surface of the moving ring of the external mechanical seal is provided with pumping thread. The device is mainly used in a marine oil-gas mixture pump.
Description
Technical field
The present invention relates to mechanical seal device, refer more particularly to the double-mechanical sealing device in the oil-gas mixed delivery pump.
Background technique
Double-mechanical sealing device in the present oil-gas mixed delivery pump, its structure comprises: be arranged on the inside and outside two cover mechanical seals between the pump housing and the pump shaft, two cover mechanical seals are separated into Seal cage and sealing liquid chamber with the cavity between the pump housing and the pump shaft, every cover mechanical seal comprises: drive sleeve, axle sleeve O type circle, rotating ring O type circle, rotating ring, stationary ring and stationary ring O type circle, drive sleeve is fixed on the pump shaft, and by axle sleeve O type circle and shaft seal, rotating ring is fixed on the drive sleeve, and by rotating ring O type circle and drive sleeve sealing, stationary ring is fixed on the pump housing, and by stationary ring O type circle and pump housing sealing, offer axial spring eye on the drive sleeve, be provided with spring in the spring eye, the rotating ring sealing surface is pressed on mutually with the stationary ring sealing surface, and the opposite side end face of rotating ring is pressed on spring.In inside and outside two cover mechanical seals, under the effect of spring force and pressure medium, with static anchor ring is that the end face (sealing surface) that benchmark makes dynamic and static ring is fitted fully, and under the effect of pressure medium, between end face, produce liquid film, when dynamic and static ring relative movement, play effect lubricated, cooling, the wear extent of dynamic and static ring friction pair is controlled in the very little scope, to reach the long term seal effect.But in actual use, because the ratio very low (the oil and gas multiphase flow ratio is 1: 9) of oil, even all be gas in the pipeline sometimes, make and be in dry condition between dynamic and static ring end face in the above-mentioned mechanical seal device, cause the wearing and tearing aggravation of dynamic and static ring friction pair, make shorten greatly the working life of described double-mechanical sealing device.
Summary of the invention
A technical problem to be solved by this invention is: the double-mechanical sealing device in a kind of oil-gas mixed delivery pump that can use for a long time under superproportional oil-gas mixed delivery pump environment is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the double-mechanical sealing device in the oil-gas mixed delivery pump, comprise: be arranged on the inside and outside two cover mechanical seals between the pump housing and the pump shaft, two cover mechanical seals are separated into Seal cage and sealing liquid chamber with the cavity between the pump housing and the pump shaft, every cover mechanical seal comprises: drive sleeve, axle sleeve O type circle, rotating ring O type circle, rotating ring, stationary ring and stationary ring O type circle, drive sleeve is fixed on the pump shaft, and by axle sleeve O type circle and shaft seal, rotating ring is fixed on the drive sleeve, and by rotating ring O type circle and drive sleeve sealing, stationary ring is fixed on the pump housing, and by stationary ring O type circle and pump housing sealing, be processed with axial spring eye on the drive sleeve, be provided with spring in the spring eye, one end of spring is pressed on the bottom of spring eye, the other end is pressed on the rotating ring bottom, makes rotating ring sealing surface and stationary ring sealing surface be close together; The top and the bottom of the pump housing offer liquid entering hole and the liquid outlet that communicates with the sealing liquid chamber respectively, and the stationary ring of described interior mechanical seal is provided with at least one groove and at least one half slot at the inner edge of sealing surface; The outer peripheral surface of the rotating ring of described outer mechanical seal is provided with pumping thread, pumping thread and pump housing Spielpassung.
The inner edge of the sealing surface of the stationary ring of described outer mechanical seal is provided with at least one half slot.
In the described inside and outside two cover mechanical seals, stationary ring is made by constant pressure sintering silicon carbide, and described rotating ring is made of rotating seat and rotating ring sheet, and wherein: the rotating ring sheet is made by Tungsten carbite.
The invention has the beneficial effects as follows: owing to be provided with pumping thread on the rotating ring external diameter in the mechanical seal outside, mix the gap generation pumping effect when failing the pump running and between the pump housing, make the cooling liquid of outside flow into the sealing liquid chamber from liquid entering hole, flow out from liquid outlet again, externally circulation flushing is carried out in mechanical seal, and cooling liquid also enters between rotating ring sealing surface and the stationary ring sealing surface by groove on the stationary ring in the interior mechanical seal and half slot, even so just make that the situation of of short duration no liquid medium appears in Seal cage, the cooling liquid that enters into interior mechanical seal rotating ring sealing surface and stationary ring sealing surface from the outside can satisfy the heat exchange needs of this rotating ring sealing surface and stationary ring sealing surface fully, can not cause the wearing and tearing aggravation of dynamic and static ring friction pair, thereby prolong the working life of this double-mechanical sealing device.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of the stationary ring of inboard mechanical seal;
Fig. 3 is the A-A sectional structure schematic representation of Fig. 2;
Fig. 4 is the structural representation of the stationary ring of outside mechanical seal;
Fig. 5 is the B-B sectional structure schematic representation of Fig. 4;
Among Fig. 1 to Fig. 5: 1, drive sleeve, 2, spring, 3, rotating ring, 4, rotating seat, 5, the rotating ring sheet, 6, stationary ring, 61, groove, 62, half slot, 7, stop pin, 8, pump shaft, 9, the pump housing, 91, liquid entering hole, 92, liquid outlet, 10, Seal cage, 11, drive sleeve, 12, spring, 13, rotating ring, 14, rotating seat, 141, pumping thread, 15, the rotating ring sheet, 16, stationary ring, 162, half slot, 17, stop pin, 18, the sealing liquid jar, 20, the sealing liquid chamber.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present invention in detail.
As shown in Figure 1, double-mechanical sealing device in the oil-gas mixed delivery pump of the present invention, comprise: the pump housing 9 and the pump shaft 8 that is movably set with in the pump housing 9, be provided with mechanical seal and outer mechanical seal in the inside and outside two cover mechanical seals promptly between the pump shaft 8 and the pump housing 9, inside and outside mechanical seal is separated into Seal cage 10 and sealing liquid chamber 20 with the cavity between the pump housing 9 and the pump shaft 8; Interior mechanical seal comprises: drive sleeve 1, rotating ring 3 and stationary ring 6, drive sleeve 1 is fixed on the pump shaft 8, and by axle sleeve O type circle and pump shaft 8 sealings, rotating ring 3 is made of rotating seat 4 and rotating ring sheet 5, rotating seat 4 is fixed on the drive sleeve 1, and by rotating ring O type circle and drive sleeve 1 sealing, stationary ring 6 is fixed on the pump housing 9 by stop pin 7, and by stationary ring O type circle and the pump housing 9 sealings, offer axial spring eye on the drive sleeve 1, be provided with spring 2 in the spring eye, spring 2 one ends are pressed on the bottom of spring eye, the other end of spring 2 is pressed on the rotating seat 4, and the rotating ring sealing surface is that its right end face of rotating ring sheet 5 and left end face that the stationary ring sealing surface is stationary ring 6 are close together under the elastic force effect of spring 2; Outer mechanical seal comprises: drive sleeve 11, rotating ring 13 and stationary ring 16, drive sleeve 11 is fixed on the pump shaft 8, and by axle sleeve O type circle and pump shaft 8 sealings, described rotating ring 13 is made of rotating seat 14 and rotating ring sheet 15, rotating seat 14 is fixed on the drive sleeve 11, and by rotating ring O type circle and drive sleeve 11 sealings, stationary ring 16 is fixed on the pump housing 9 by stop pin 17, and by stationary ring O type circle and the pump housing 9 sealings, offer axial spring eye on the drive sleeve 11, be provided with spring 12 in the spring eye, spring 12 1 ends are pressed on the bottom of spring eye, the other end of spring 12 is pressed on the rotating seat 14, and the rotating ring sealing surface is that its right end face of rotating ring sheet 15 and left end face that the stationary ring sealing surface is stationary ring 16 are close together under the elastic force effect of spring 12; The top and the bottom of the pump housing 9 offer liquid entering hole 91 and the liquid outlet 92 that communicates with sealing liquid chamber 20; The outer peripheral surface of the rotating seat 14 of the rotating ring 13 of described outer mechanical seal is provided with pumping thread 141, pumping thread 141 and the pump housing 9 Spielpassung.In the present embodiment, as Fig. 2, shown in Figure 3, the stationary ring 6 of described interior mechanical seal is provided with four grooves 61 and four half slots 62 at the inner edge of sealing surface; As Fig. 4, shown in Figure 5, the inner edge of the sealing surface of the stationary ring 16 of mechanical seal outside described is provided with six half slots 162; In the described inside and outside two cover mechanical seals, stationary ring 6 and 16 is made by constant pressure sintering silicon carbide, and rotating ring sheet 5 and 15 is made by Tungsten carbite.During practical application, liquid entering hole 91 and liquid outlet 92 are connected with sealing liquid jar 18 with connecting tube.
Working principle of the present invention is: mix the pumping effect that produces when defeated pump turns round, make the cooling liquid of outside flow into sealing liquid chamber 20 from liquid entering hole 91, flow back to sealing liquid jar 18 through pumping thread 141 backs from liquid outlet 92 again, like this, constantly circulation flushing is carried out in the external mechanical seal of cooling liquid of flowing, and has guaranteed the normal use of outer mechanical seal; And, cooling liquid also enters between rotating ring sealing surface and the stationary ring sealing surface by groove on the stationary ring in the interior mechanical seal 6 61 and half slot 62, even so just make Seal cage 10 situation of of short duration no liquid medium occur, enter into the rotating ring sealing surface of interior mechanical seal and the heat exchange needs that the cooling liquid between the stationary ring sealing surface can satisfy this rotating ring sealing surface and stationary ring sealing surface fully from sealing liquid chamber 20, can not cause the wearing and tearing aggravation of dynamic and static ring friction pair, thereby prolong the working life of this double-mechanical sealing device.In addition, occur losing efficacy as interior mechanical seal, the rock gas of revealing from Seal cage 10 passes sealing liquid chamber 20 and is collected in the outside sealing liquid jar 18, after concentration reaches certain proportion, the prober that links to each other with sealing liquid jar 18 will give the alarm, remind operator in time to handle, thereby can avoid the generation of accident.
Claims (3)
1. the double-mechanical sealing device in the oil-gas mixed delivery pump, comprise: be arranged on the inside and outside two cover mechanical seals between the pump housing and the pump shaft, two cover mechanical seals are separated into Seal cage and sealing liquid chamber with the cavity between the pump housing and the pump shaft, every cover mechanical seal comprises: drive sleeve, axle sleeve O type circle, rotating ring O type circle, rotating ring, stationary ring and stationary ring O type circle, drive sleeve is fixed on the pump shaft, and by axle sleeve O type circle and shaft seal, rotating ring is fixed on the drive sleeve, and by rotating ring O type circle and drive sleeve sealing, stationary ring is fixed on the pump housing, and by stationary ring O type circle and pump housing sealing, be processed with axial spring eye on the drive sleeve, be provided with spring in the spring eye, one end of spring is pressed on the bottom of spring eye, the other end is pressed on the rotating ring bottom, makes rotating ring sealing surface and stationary ring sealing surface be close together; It is characterized in that: the top and the bottom of the pump housing offer liquid entering hole and the liquid outlet that communicates with the sealing liquid chamber respectively, and the stationary ring of described interior mechanical seal is provided with at least one groove and at least one half slot at the inner edge of sealing surface; The outer peripheral surface of the rotating ring of described outer mechanical seal is provided with pumping thread, pumping thread and pump housing Spielpassung.
2. double-mechanical sealing device as claimed in claim 1 is characterized in that: the inner edge of the sealing surface of the stationary ring of described outer mechanical seal is provided with at least one half slot.
3. double-mechanical sealing device as claimed in claim 1 or 2 is characterized in that: in the described inside and outside two cover mechanical seals, stationary ring is made by constant pressure sintering silicon carbide, and described rotating ring is made of rotating seat and rotating ring sheet, and wherein: the rotating ring sheet is made by Tungsten carbite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101967469A CN101408192B (en) | 2008-09-19 | 2008-09-19 | Double-mechanical sealing device in oil-gas mixed delivery pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101967469A CN101408192B (en) | 2008-09-19 | 2008-09-19 | Double-mechanical sealing device in oil-gas mixed delivery pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101408192A true CN101408192A (en) | 2009-04-15 |
| CN101408192B CN101408192B (en) | 2010-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101967469A Expired - Fee Related CN101408192B (en) | 2008-09-19 | 2008-09-19 | Double-mechanical sealing device in oil-gas mixed delivery pump |
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| CN (1) | CN101408192B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644752A (en) * | 2012-04-28 | 2012-08-22 | 大连华阳光大密封有限公司 | Common drive sleeve for mechanical seal |
| CN103195741A (en) * | 2013-04-07 | 2013-07-10 | 宁波天工机械密封有限公司 | Packaging type mechanical seal for chemical engineering process pump |
| CN106762798A (en) * | 2016-12-21 | 2017-05-31 | 张军 | A kind of oil-gas mixed delivery pump mechanical seal |
| CN107842524A (en) * | 2017-11-21 | 2018-03-27 | 浙江天鹰机械密封件有限公司 | Sewage mechanical sealing device used for pump |
-
2008
- 2008-09-19 CN CN2008101967469A patent/CN101408192B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644752A (en) * | 2012-04-28 | 2012-08-22 | 大连华阳光大密封有限公司 | Common drive sleeve for mechanical seal |
| CN103195741A (en) * | 2013-04-07 | 2013-07-10 | 宁波天工机械密封有限公司 | Packaging type mechanical seal for chemical engineering process pump |
| CN103195741B (en) * | 2013-04-07 | 2016-08-17 | 宁波天工机械密封有限公司 | Packaging type mechanical seal for a chemical engineering process pump |
| CN106762798A (en) * | 2016-12-21 | 2017-05-31 | 张军 | A kind of oil-gas mixed delivery pump mechanical seal |
| CN107842524A (en) * | 2017-11-21 | 2018-03-27 | 浙江天鹰机械密封件有限公司 | Sewage mechanical sealing device used for pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101408192B (en) | 2010-08-25 |
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Owner name: JIANGSU HUAQING FLUID TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHANGJIAGANG HUAQING TECHNOLOGY CO., LTD. |
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Address after: 215633 Jiangsu Province Jin Gang Zhen Pan Gang Road No. 123 Patentee after: Jiangsu Huaqing Fluid Technology Co.,Ltd. Address before: 215633 Jiangsu city of Zhangjiagang Province Jin Gang Zhen Pan Gang Road No. 123 Patentee before: Zhangjiagang Huaqing Technology Co., Ltd. |
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Granted publication date: 20100825 Termination date: 20200919 |
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| CF01 | Termination of patent right due to non-payment of annual fee |