CN2352733Y - Pressure balancing type centrifugal mud pump - Google Patents
Pressure balancing type centrifugal mud pump Download PDFInfo
- Publication number
- CN2352733Y CN2352733Y CN 98241944 CN98241944U CN2352733Y CN 2352733 Y CN2352733 Y CN 2352733Y CN 98241944 CN98241944 CN 98241944 CN 98241944 U CN98241944 U CN 98241944U CN 2352733 Y CN2352733 Y CN 2352733Y
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- pump
- shoulder
- ring
- stationary ring
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- Expired - Fee Related
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Abstract
The utility model relates to a balance pressure type centrifugal sand pump, which comprises a pump body, a pump housing and an impeller. The utility model is characterized in that a balance pressure type mechanical sealing device for rotor rings and stator rings is used in the pump body, which can make the utility model have a favorable sealing performance and can enhance work efficiency; meanwhile, a spiral notopodium structure is arranged on the impeller, which can reduce mechanical abrasion of the pump body from silt and can extend the service life of the utility model.
Description
The utility model belongs to the centrifugal sand pump that a kind of conveying contains the silt particle drilling fluid, the centrifugal sand pump of particularly a kind of balance pressure type.
Centrifugal sand pump is the visual plant that is used for the petroleum drilling engineering drilling fluid solid control, its effect is to enter in hydrocyclone or desilter and the centrifugal desilt machine with certain pressure returning the drilling fluid that ground has the different landwaste of a large amount of thicknesses in the well, recycles so that carry out purified treatment.Mostly the centrifugal sand pump of present domestic use is what the design of reference six the seventies prototype equipments was produced, it exists shortcoming to be: mostly (1) these sand pumps are packing seal, this sand pump packing seal seals by jam-packed power between packing and the rotating shaft, thereby the friction of pump consumption is big, landwaste in the on-stream drilling fluid is very easy to be got between packing and the rotating shaft, make the two very quick-wearing, the packing seal life-span generally had only about ten days, after heavy wear, will occur revealing, pump pressure descends, the equipment desanding effect of making degenerates, and when the sand pump performance can not satisfy the drilling technology requirement, must change axle; (2) this pump dismounting is relatively more difficult, brings very burden to the user.For above-mentioned reasons, the working life of this pump and stream time are all very short, and drilling team's one annual mean need be changed sand pump No. three, four times.In recent years the domestic producer that has is the external mechanical seal sand pump of design improvement or the mechanical seal sand pump of different types in succession, though some improvement arranged but be mostly to suppress the blocking type structure, promptly strengthened the dynamic load of bearing, friction pair overburdening under stronger spring pressure is rotated, make mechanical sealing element cross quick-wearing and cause sand pump not use.
The purpose of this utility model is to design the centrifugal sand pump of a kind of balance pressure type, and its adopts the balance pressure structure in pump, makes the be not stressed influence of size of pump inner member, has protected the Sealing Device of the pump housing, has prolonged the working life of sand pump.
The technical solution of the utility model: the centrifugal sand pump of a kind of balance pressure type, comprise the pump housing, contain pump case and the impeller of putting the sand plug, it is characterized in that between pump shoulder axle in the pump housing and wear-resistant dish rotating ring and stationary ring being housed; Said rotating ring places the protruding place of shoulder of pump shoulder axle, rotating ring and shoulder between centers have seal ring, with the conjuncted annular friction pair that an alloy material is arranged of rotating ring, its end face is a high precision plane, have between rotating ring and wear-resistant dish the propelling movement silt particle screw thread; Said stationary ring places wear-resistant dish to be connected with wear-resistant dish gland with the shoulder between centers of pump shoulder axle and according to locating stud, between stationary ring and gland seal ring is arranged, the shoulder between centers of stationary ring and pump shoulder axle is with spring, with the conjuncted annular friction pair that an alloy material is also arranged of stationary ring, its end face also is a high precision plane, the space that has silt particle to reflux between stationary ring and wear-resistant dish, and the silt of stationary ring refluxes and touches face a and reflux greater than the silt particle of rotating ring and touch face b; Be one between above-mentioned rotating ring friction pair and stationary ring friction pair and compress sealing surface and contact shape, the spring of two friction pairs and pump shoulder between centers and stationary ring and pump shoulder between centers all leave the lubricant oil space; The sealing gasket sealing is arranged between said wear-resistant dish and the gland.
The impeller of the centrifugal sand pump of above-mentioned balance pressure type has been taked the notopodium structure, and notopodium promptly is installed on impeller, and the spiral that notopodium is centrosymmetric on impeller distributes.
Working principle of the present utility model and working procedure: after this balance pressure type centrifugal sand pump startup, after mud enters space between stationary ring and wear-resistant dish by the slit between rotating ring and the wear-resistant dish, because its direction of advance is sealed, then mud is forced to reflux round about, simultaneously touch face a and reflux greater than the silt of rotating ring and touch face b because of silt on the stationary ring refluxes, so its backpressure is more than or equal to positive pressure, the flour milling of two friction pairs on quiet, the rotating ring is adjacent to more, reaches the effect of good seal.The notopodium structure of taking on this pump impeller, its impeller is when high speed rotating, when silt particle flows to the mechanical seal rubbing surface under certain pressure, thrown away by the spiral notopodium of high speed rotating and to be discharged in the spiral case, thereby a large amount of drilling fluids is blocked on reduce beyond the mechanical seal the wearing and tearing of the sand grains in the mud, landwaste to mechanical seal, prolonged the working life of sand pump.
Superiority of the present utility model is: 1, owing to taked to utilize the structure of balance pressure principle in the pump housing, make pump housing operation not be subjected to the influence of ambient pressure size, optimized the sealing effect in the pump simultaneously, improved working efficiency; 2, impeller adopts spiral notopodium structure, has reduced the mechanical wear in the pump, has prolonged working life.
Further specify present technique below in conjunction with drawings and Examples.
Fig. 1 is the overall structure schematic representation of the centrifugal sand pump of the related balance pressure type of the utility model.
Fig. 2 is the balance pressure type mechanical seal structure schematic representation of the centrifugal sand pump of the related balance pressure type of the utility model.
Fig. 3 is the notopodium structural representation of the centrifugal sand pump of the related balance pressure type of the utility model.
Wherein: 1 is the pump housing, and 2 for to contain the pump case of putting the sand plug, and 3 is impeller, 4 is wear-resistant dish, and 5 is gland, and 6 is sealing gasket, 7 is shoulder axle (pump rotating shaft), 8 is rotating ring, and 9 is stationary ring, and 10 is the rotating ring friction pair, 11 is seal ring of moving ring, 12 is the stationary ring friction pair, and 13 is the stationary ring seal ring, and 14 is spring, 15 is locating stud axisymmetricly, 16 is gland screw, and 17 is the lubricant oil space, and 18 stationary rings for silt backflow space reflux and touch face a, 19 rotating rings for silt backflow space reflux and touch face b, 20 is spiral notopodium, and 21 is the shaft seal circle, and 22 is plug.
Embodiment: the centrifugal sand pump of a kind of balance pressure type (seeing Fig. 1-2), comprise the pump housing 1, contain the pump case 2 and impeller 3 of putting sand plug 22, it is characterized in that pump shoulder axle 7 and 4 on the wear-resistant dish in the pump housing is equipped with rotating ring 8 and stationary ring 9; Said rotating ring 8 places the protruding place of shoulder of pump shoulder axle, and 7 on rotating ring 8 and shoulder axle have seal ring 11, and with the rotating ring 8 conjuncted annular friction pairs 10 that an alloy material is arranged, its end face is a high precision plane, and 4 on rotating ring 8 and wear-resistant dish have the screw thread that pushes silt particle; Said stationary ring 9 places wear-resistant dish 4 to be connected with wear-resistant dish gland 5 with the shoulder between centers of pump shoulder axle 7 and according to locating stud 15,5 on stationary ring 9 and gland have seal ring 13, stationary ring 9 is with spring 14 with the shoulder between centers of pump shoulder axle 7, with the stationary ring 9 conjuncted annular friction pairs 12 that an alloy material is also arranged, its end face also is a high precision plane, the space that 4 on stationary ring 9 and wear-resistant dish have silt particle to reflux, and the silt of stationary ring refluxes and touches face a18 and reflux in the silt particle of rotating ring and touch face b19; Above-mentioned rotating ring friction pair 10 and 12 of stationary ring friction pairs are one and compress sealing surface and contact shape, and the spring 14 and 7 on the pump shoulder axle of two friction pairs and 7 on pump shoulder axle and stationary ring 9 all leave lubricant oil space 17; Sealing gasket 6 sealings are arranged between said wear-resistant dish 4 and the gland 5.
The impeller 3 of the centrifugal sand pump of the above-mentioned balance pressure type of (see figure 3) has been taked the notopodium structure, and notopodium 20 promptly is installed on impeller 3, and the spiral that notopodium is centrosymmetric on impeller distributes.
Claims (2)
1, the centrifugal sand pump of a kind of balance pressure type comprises the pump housing, contains pump case and the impeller of putting the sand plug, it is characterized in that between pump shoulder axle in the pump housing and wear-resistant dish rotating ring and stationary ring being housed; Said rotating ring places the protruding place of shoulder of pump shoulder axle, and rotating ring and shoulder between centers have seal ring, and with the conjuncted annular friction pair that an alloy material is arranged of rotating ring, its end face is a high precision plane, and the screw thread that pushes silt particle is arranged between rotating ring and wear-resistant dish; Said stationary ring places wear-resistant dish to be connected with wear-resistant dish gland with the shoulder between centers of pump shoulder axle and according to locating stud, between stationary ring and gland seal ring is arranged, the shoulder between centers of stationary ring and pump shoulder axle is with spring, with the conjuncted annular friction pair that an alloy material is also arranged of stationary ring, its end face also is a high precision plane, the space that has silt particle to reflux between stationary ring and wear-resistant dish, and the silt of stationary ring refluxes and touches face a and reflux greater than the silt particle of rotating ring and touch face b; Be one between above-mentioned rotating ring friction pair and stationary ring friction pair and compress sealing surface and contact shape, the spring of two friction pairs and pump shoulder between centers and stationary ring and pump shoulder between centers all leave the lubricant oil space; The sealing gasket sealing is arranged between said wear-resistant dish and the gland.
2, the centrifugal sand pump of balance pressure type according to claim 1 is characterized in that the impeller of the centrifugal sand pump of balance pressure type has been taked the notopodium structure, and notopodium promptly is installed on impeller, and the spiral that notopodium is centrosymmetric on impeller distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98241944 CN2352733Y (en) | 1998-10-30 | 1998-10-30 | Pressure balancing type centrifugal mud pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98241944 CN2352733Y (en) | 1998-10-30 | 1998-10-30 | Pressure balancing type centrifugal mud pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2352733Y true CN2352733Y (en) | 1999-12-08 |
Family
ID=33988597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98241944 Expired - Fee Related CN2352733Y (en) | 1998-10-30 | 1998-10-30 | Pressure balancing type centrifugal mud pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2352733Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365288C (en) * | 2005-10-14 | 2008-01-30 | 江苏大学 | Back vane structure for centrifugal pump |
-
1998
- 1998-10-30 CN CN 98241944 patent/CN2352733Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365288C (en) * | 2005-10-14 | 2008-01-30 | 江苏大学 | Back vane structure for centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |