CN2059699U - Spiral seal device for d oil-line pump - Google Patents
Spiral seal device for d oil-line pump Download PDFInfo
- Publication number
- CN2059699U CN2059699U CN 90201061 CN90201061U CN2059699U CN 2059699 U CN2059699 U CN 2059699U CN 90201061 CN90201061 CN 90201061 CN 90201061 U CN90201061 U CN 90201061U CN 2059699 U CN2059699 U CN 2059699U
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- CN
- China
- Prior art keywords
- seal
- spiral
- oil
- quiet cover
- rotary sleeve
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- Expired - Lifetime
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Abstract
The utility model relates to a spiral seal device for D oil-line pumps, solving the non-contact type sealing problem of D oil-line pumps. The spiral seal device for D oil-line pumps is characterized in that a spiral groove is arranged on one of the rotating piece and the fixing piece which are arranged in the seal cavity of the spiral seal device for D oil-line pumps; the spiral direction of the spiral groove is opposite to the rotating direction of the rotating piece; an oil seal is added at the outer terminal port of the seal cavity. The utility model which has the advantages of simple structure, long service life, no leakage and less maintenance is of practical use.
Description
The utility model is the seal arrangement that is used on D type (the sectional type single suction the is multistage) oil transfer pump, relates to the field of components of sealing, shaft sealing and non-varactor pump.
Pump is used widely in national economy all departments.The sealing problem of pump is paid close attention to by people for many years always, successively works out multiple seal arrangements such as packing seal, mechanical seal, liquid film seal and spiral seal, and all becomes ripe, progressively is generalized in the sealing of various pumps.But the D type pump for conveying crude oil still adopts packing seal or mechanical seal device so far.For packing seal, when compressing, then filler heating, consumption of power is big, then can seepage when loosening, and also working life is short, needs often to change, and influences oil transportation production.Though mechanical seal has solved the easily deficiency of heating of the big and filler of packing seal consumption of power, cost height itself, installation precision requires high, and because the axial motion of pump still can cause seepage, promptly also remains with the inherent defect that " contact-type " seals.After the spiral seal appearance as " contactless ", be applied to fields such as machinery, electric power, chemical industry very soon, chemical industry one comrade Chi Haiqing of factory of Liaoyang petro-chemical fiber company who steps on according to 1989 the 5th periodicals of " lubricated with sealing " magazine introduces in " brief talking spiral seal ", spiral seal is applied on the centrifugal pump, but does not see the example that is applied on the D type pump so far as yet.Because there still have many practical problems to have to be to be solved.
The purpose of this utility model is that the spiral seal technology is applied on the D type pump, solves " contactless " sealing problem of D type pump.
This seal arrangement is to have spiral grooves on a certain between rotating component and the fixed block in the Seal cage of pump, the switched in opposite of its rotation direction and rotating component, and outside Seal cage, be equipped with oil sealing again.Spiral seal is to solve " contactless " sealing problem, the leakage problems when oil sealing then can solve termination of pumping.The combination of two kinds of sealing techniquies just can be than the sealing problem that solve this pump perfectly.The rotation direction of spiral grooves must with the switched in opposite of rotatingshaft, so just can be in the Seal cage of pump produce inside pumping force in the gap between rotating component and the fixed block, with liquid pump to the inside.This spiral grooves can be opened in principle on rotating component, also can be on fixed block.On rotating component, be easy to processing but in general open, and open processing difficulties on fixed block.For D type pump,, on rotary sleeve ［ 1 ］, be to suit somebody to a T so spiral grooves ［ 10 ］ is processed because when dispatching from the factory, product itself has just had rotary sleeve ［ 1 ］ (seeing Fig. 1 for details) in the rotating shaft of Seal cage.This is very much convenient for the change of using product.And for the new product of using spiral seal instead, it is just passable only to go up the processing spiral grooves at original rotary sleeve ［ 1 ］, changes also little.Length as for spiral grooves will be determined by calculating, and generally should length should not lack.Under the enough long situation of the length of Seal cage, would rather on the length of whole Seal cage, all process spiral grooves.Owing to rotatablely move between quiet cover ［ 2 ］ and the rotary sleeve ［ 1 ］, and medium is a crude oil, and from the angle of safety, the material of quiet cover ［ 2 ］ should be wear-resisting, do not have static and certain intensity is arranged, general quiet cover should adopt nonmetallic material, and more satisfactory material is an impregnated graphite.As being used to carry non-inflammable medium, then quiet cover also can be selected metallic material, as copper etc.Seal cage is formed by housing ［ 8 ］ and rotating shaft ［ 6 ］, and its inner end is cooperated with housing ［ 8 ］ by the spacer sleeve ［ 7 ］ that is connected in the rotating shaft ［ 6 ］, leaves certain clearance; Its outer end earlier by quiet cover gland ［ 4 ］ with housing ［ 8 ］, quiet cover ［ 2 ］ and rotary sleeve ［ 1 ］ press seal, it twists quiet cover gland ［ 4 ］ with bolt ［ 9 ］ solid on housing ［ 8 ］, is twisted admittedly by bolt ［ 9 ］ by oil sealing cover ［ 5 ］ more at last and goes up quiet cover gland ［ 4 ］, oil sealing ［ 3 ］ press seal on the outermost end of rotary sleeve ［ 1 ］ at quiet cover gland ［ 4 ］.
When the specific design spiral seal, all to conscientiously design each parameter.It at first is the gap between rotary sleeve ［ 1 ］ and the quiet cover ［ 2 ］.Theoretically, square being inversely proportional to of the pumping force of spiral seal and this gap delta, but gap delta also can not be too little, otherwise will produce friction, loss power.Certainly, gap delta is big, just can not form pumping force.General design is as far as possible little in gap delta, but does not produce contact friction for well.As for a number of spiral grooves, can one, also can bull, generally adopt about 6 to well.The shape of spiral grooves can be multiple shape, and the viscosity and the processing conditions that specifically adopt which kind of shape will look the rotating speed of pump, fed sheet of a media are determined.In addition, also have parameters such as spiral shell square, helical pitch, helix angle, groove depth and groove width, also will appropriately select.
Oil sealing ［ 3 ］ non-leakage problem when mainly solving termination of pumping, its promptly common used oil sealing.
Because D type pump has adopted Balance disc at high voltage terminal, so its high voltage terminal is in fact very not big to the pressure of sealing.The utility model is taked above-mentioned concrete structure and measure in addition, goes for the high and low pressure side of D type pump fully.Through test, be crude oil for the pump medium, its inlet pressure is no more than the occasion of 0.2MPa, and behind the employing sealing device, outlet pressure can reach 4.2MPa, and can accomplish ne-leakage.This device equally also is applicable to other media of carrying similar crude oil medium (viscosity is not less than 40MPas).
The sealing device is compared with mechanical seal with packing seal, has simple in structure, life-span length, ne-leakage, investment is little and amount of maintenance is little advantage, and is very with practical value.
Description of drawings:
Fig. 1 is the sectional view of D type oil transfer pump spiral sealing device.
Wherein: the quiet cover of 1-rotary sleeve 2-
The quiet cover gland of 3-oil sealing 4-
5-oil sealing cover 6-pump shaft
7-spacer sleeve 8-housing
9-bolt 10-spiral grooves
Claims (4)
1, a kind of D type oil transfer pump spiral sealing device that is used for conveying crude oil is characterized in that having spiral grooves on a certain between rotating component in the pump seal chamber and the fixed block, the switched in opposite of its rotation direction and rotating component, and be added with oil sealing in the Seal cage external port.
2, D type oil transfer pump spiral sealing device as claimed in claim 1, open spiral grooves on the rotary sleeve ［ 1 ］ that it is characterized in that in the pump seal chamber, fixing in the rotating shaft, be enclosed within the outer quiet cover ［ 2 ］ of rotary sleeve ［ 1 ］ and be connected on the housing ［ 6 ］, cooperate with rotary sleeve ［ 1 ］ as fixed block to constitute spiral seal.
3, as claim 1 and 2 described D type oil transfer pump spiral sealing devices, the inner end that it is characterized in that Seal cage is become to be rotatably assorted with housing ［ 8 ］ by the spacer sleeve ［ 7 ］ that is connected in the rotating shaft ［ 6 ］, its outer end earlier by quiet cover gland ［ 4 ］ with housing ［ 8 ］ and quiet cover ［ 2 ］, rotary sleeve ［ 1 ］ press seal, quiet cover gland is twisted solid on housing ［ 8 ］ by bolt ［ 9 ］, by bolt ［ 9 ］ oil sealing cover ［ 5 ］ is twisted admittedly on quiet cover gland ［ 4 ］ again, quiet cover gland ［ 4 ］, oil sealing ［ 3 ］ are enclosed on the termination of rotary sleeve ［ 1 ］ in the lump.
4, as claim 1 and 2 described D type oil transfer pump spiral sealing devices, it is characterized in that quiet cover ［ 2 ］ made by nonmetallic material, preferably adopt impregnated graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90201061 CN2059699U (en) | 1990-01-23 | 1990-01-23 | Spiral seal device for d oil-line pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90201061 CN2059699U (en) | 1990-01-23 | 1990-01-23 | Spiral seal device for d oil-line pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2059699U true CN2059699U (en) | 1990-07-25 |
Family
ID=4882761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90201061 Expired - Lifetime CN2059699U (en) | 1990-01-23 | 1990-01-23 | Spiral seal device for d oil-line pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2059699U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134957A (en) * | 2015-10-09 | 2015-12-09 | 张家港市兰航机械有限公司 | Shaft seal with labyrinth seal structure |
| CN111237472A (en) * | 2020-01-10 | 2020-06-05 | 西安交通大学 | Rotating shaft threaded water sealing structure based on sealing cavity |
-
1990
- 1990-01-23 CN CN 90201061 patent/CN2059699U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134957A (en) * | 2015-10-09 | 2015-12-09 | 张家港市兰航机械有限公司 | Shaft seal with labyrinth seal structure |
| CN111237472A (en) * | 2020-01-10 | 2020-06-05 | 西安交通大学 | Rotating shaft threaded water sealing structure based on sealing cavity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Designer after: Liu Zuyi Designer after: Zhang Guiran Designer after: Pan Shiwei Designer before: Pan Shiwei Designer before: Liu Zuyi Designer before: Zhang Guiran Designer before: Wang Meng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: DESIGNER; FROM: PAN SHIWEI; LIU ZUYI; ZHANG GUIRAN; WANG MENG TO: LIU ZUYI; ZHANG GUIRAN; PAN SHIWEI |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |