CN2194989Y - 80 AY 100X2 model double-stage single-suction cantilever centrifugal oil pump - Google Patents
80 AY 100X2 model double-stage single-suction cantilever centrifugal oil pump Download PDFInfo
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- CN2194989Y CN2194989Y CN 94228112 CN94228112U CN2194989Y CN 2194989 Y CN2194989 Y CN 2194989Y CN 94228112 CN94228112 CN 94228112 CN 94228112 U CN94228112 U CN 94228112U CN 2194989 Y CN2194989 Y CN 2194989Y
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Abstract
The utility model discloses a 80AY100*2 type two-stage single-suction cantilever centrifugal oil pump, belonging to the petrochemical industry. The utility model is composed of a front pump cover, a pump body, a pump cover, a threaded stud, a nut, a hanger bracket member, an impeller nut, a secondary impeller, a pump shaft, a primary impeller, and a sealing filler member. In the original 80Y100*2 type pump, the installation dimension and the performance parameter are unchanged, and a pump body, an impeller, a pump cover, a pump shaft, and a hanger bracket are improved, which improves the efficiency and the running stability of the pump, and reduces the vibration and the noise. The utility model can be widely used for conveying the petroleum, the liquefied petroleum gas, and other media without containing the solid particle for the refining of the petroleum, the petrochemical industry, the chemical industry, and other places.
Description
The utility model is to belong to a kind of petrochemical industry pump.
At present, 80Y100 * 2 type two-stage single suction cantilever type centrifugal oil pumps, the suspension of the sprung parts of this type pump, the suspension flange cylindrical that it matches with pump cover and the bearing support cylindrical of supporting rotor parts differ greatly, and are generally 2:1.Between to connect the rib width narrower, rib thickness is thin again, suspension length is long again.Bearing portion easily generates heat, and the type of cooling is to adopt local water-cooled, can not eliminate the bearing ambient heat.Above-mentioned deficiency has caused the poor stability of 80Y100 * 2 type pumps, generation vibration and noise are bigger during running, pump efficiency is low, power of motor is big, can not satisfy the needs of modernization construction, user in all parts of the country appeals that it is the new pump at center that manufactory will develop as soon as possible with energy-conservation, or original 80Y100 * 2 type pumps are undergone technological transformation.
The purpose of this utility model: be in order to solve 80Y100 * 2 type two-stage single suction cantilever type centrifugal oil pump sprung parts poor rigidity, bearing easily generates heat, the 80Y100 that causes * 2 type pump poor stabilities, generation vibration and noise are bigger during running, pump efficiency is low, it is big to wear power of motor, can not satisfy the problem that the petrochemical industry modernization of industry is built needs.Original 80Y100 * 2 type pumps are improved the needs that satisfy the construction of the petrochemical industry modernization of industry.
The purpose of this utility model is achieved in that keep to be inherited under the constant situation of original 80Y100 * 2 type pump basic structure patterns, installation dimension, performance parameter, the pump housing (2), one-level impeller (10), sencond stage impeller (8), pump cover (3), pump shaft (9), sprung parts (6) to 80Y100 * 2 type pumps improve, and increase front pump cover (1), wherein each part improves as follows:
1. the pump housing (2) improves
The pump housing (with the pump cover match end) outside diameter is φ 405mm, with the pump cover seam aperture that matches be φ 315H7mm, with the pump cover aperture that matches be φ 295mm, volute chamber 1 base circle diameter (BCD) is φ 292mm, the suction port seal ring I aperture that matches is φ 145H7mm, suction port I aperture is φ 140mm, with the internal liner aperture that matches be φ 75H7mm, suction port II aperture is φ 114.5mm, the suction port seal ring II aperture that matches is φ 125H7mm, and volute chamber II base circle diameter (BCD) is φ 292mm, with the front pump cover aperture that matches be φ 295mm, with the front pump cover seam aperture that matches be φ 315H7mm, with front pump cover match end outside diameter be φ 405mm, the suction pipe center is 64mm to the distance at volute chamber I center, volute chamber I center is 62mm to the distance of exterior edge face, volute chamber I center is 128mm to the distance at volute chamber II center, volute chamber II center is 67mm to the distance of exterior edge face, and pump housing length overall is 257mm, and volute chamber I width is 29mm, volute chamber II width is 29mm, and wall thickness is 16mm;
2. pump cover (3) improves
The pump cover outside diameter is φ 405mm, with the pump housing seam external diameter that matches be φ 315g6mm, with the pump housing external diameter that matches be φ 294mm, front-end face is 47mm to the large end face distance, the pump cover total length is 113mm, with the throat lining aperture that matches be φ 75H7mm, the stuffing box bore dia is φ 90H8mm, and the stuffing box hole length is 103mm, and the cooling chamber aperture is φ 215H9mm, cooling chamber cylindrical seam diameter is φ 150e8mm, with suspension positioning spigot diameter be φ 230h8mm;
3. one-level impeller (10) improves
The suction eye aperture is φ 95.5mm, and the seal ring external diameter that matches is φ 120js6mm, and the impeller outer circular diameter is φ 292mm, the impeller total length is 63 ± .0.05mm, suction side navel diameter is φ 57mm, with the axle aperture that matches be φ 45H7mm, the hole total length is 63 ± 0.05mm, rear end navel diameter is φ 65h8mm, impeller water outlet width is 6.5mm, and the impeller front end is 36.5mm to the distance at water outlet center, and the number of blade is 4 pieces, blade shape is a prismatic blade, and subtended angle of blade is 180 °;
4. pump shaft (9) improves
The pump shaft total length is 760mm, with the impeller external diameter that matches be φ 45h6mm, with the axle sleeve external diameter that matches be φ 48h6mm, φ 54h6mm, with the fore bearing external diameter that matches be φ 60js6mm, with the rear bearing external diameter that matches be φ 55js6mm, with the coupling external diameter that matches be φ 45K6mm, matching with coupling, the outer radius keyway is wide to be 14N9mm;
5. sencond stage impeller (8) improves
The suction eye aperture is φ 86mm, the seal ring external diameter that matches is φ 98js6mm, the impeller outer circular diameter is φ 292mm, the impeller total length is 70mm, suction side navel diameter is φ 57mm, with the axle aperture that matches be φ 45H7mm, the hole total length is 47 ± 0.05mm, the aperture, rear end is φ 80mm, and the back-end sealing ring external diameter that matches is φ 98js6mm, and impeller water outlet width is 6.5mm, the impeller front end is 33.5mm to the distance at water outlet center, the number of blade is 4 pieces, and blade shape is a prismatic blade, and subtended angle of blade is 180 °;
6. sprung parts (6) improves
Change original 50 suspensions into improved 55 suspensions, suspension flange outside diameter is φ 292mm, with the pump cover seam aperture that matches be φ 230H7mm, the bearing support outside diameter is φ 292mm, between to connect the rib width be 159mm, rib thickness is 24mm, and suspension length is 343-0.4mm, and the bearing support joint thinnest part wall thickness of two bearings is 13mm;
Cooling means to the suspension shaft bearing is improved, and improves the back cooling means, and cold etc. three kinds of water-cooled, air cooling, fan arranged.Can select for use according to the different serviceability temperature territory of use situation of pump like this, wherein fan cooled particularly is applicable to the area of lack of water or water quality inferiority.Water-cooled (t〉260 ℃) is to be cast with annular cooling chamber at suspension shaft bearing fore bearing supporting sleeve cylindrical, after the sealing, when mobile cooling water during by cooling chamber the cooling of the heat of bearing support or take away the purpose that reaches cooling bearing.Air cooling (t＜120 ℃) is that the outer surface in the suspension shaft bearing is cast with radiating fin, and the heat of bearing passes on the radiating fin by bearing support, is cooled off by moving air or heat is taken away the purpose that reaches cooling bearing.Fan cold (t=120--260 ℃) is in suspension shaft bearing outer end (tail end) fan guard (12) to be housed, it is to be contained on the pump shaft (9) that fan (13) is arranged in the fan guard (12), fan when pump rotates (13) also rotates, fan (13) rotation makes cold wind pass through fan guard (12) and blows on the sprung parts (6), and the acceleration air flows is cooled off heat or take away and reaches the purpose that cooling bearing seat plays cooling bearing.
7. increase front pump cover (1)
Outside diameter is φ 405mm, with the pump housing seam external diameter that matches be φ 315g6mm, with the pump housing external diameter that matches be φ 294mm, the seal ring aperture that matches is φ 125H7, front-end face is that 50mm. front pump cover total length is 90mm to the distance of large end face, wall thickness is 20mm.
By the improvement to the pump housing (2), pump cover (3), one-level impeller (10), pump shaft (9), sencond stage impeller (8), sprung parts (6), and after increasing front pump cover (1), meet the flow of fluid Changing Pattern more, the efficient of pump improves 1.5%.After the improvement to sprung parts (6), improved pump running security and stability, reduced vibration and noise, less than state specified standards.Play the effect of cooling bearing.
80AY100 after the improvement * 2 type two-stage single suction cantilever type centrifugal oil pumps are by front pump cover (1), the pump housing (2), pump cover (3), stud bolt (4), nut (5), sprung parts (6), impeller nut (7), sencond stage impeller (8), pump shaft (9), one-level impeller (10), and stuffing box packing parts (11) are formed, double end breechblock (4) is contained in the pump housing (2), on the pump cover (3), stuffing box packing parts (11) are contained in the pump cover (3), sprung parts (6) supporting pump shaft (9), pump cover (3) is enclosed within pump shaft (9) and joins fastening with nut (5) with sprung parts (6), one-level impeller (10) and axle sleeve are contained on the pump shaft (9), the pump housing (2) joins fastening with nut (5) with pump cover (3), sencond stage impeller (8) is contained on the interior pump shaft (9) of the pump housing (2), and it is fastening with impeller nut (7), it is upward fastening with nut (5) that front pump cover (1) is contained in the pump housing (2), and the even nothing of each string quantity is suppressed when rotating pump shaft (9).
The utility model compared with prior art has following advantage:
1. after the improvement to the pump housing (2), pump cover (3), one-level impeller (10), pump shaft (9), sencond stage impeller (8) and sprung parts (6), increased front pump cover (1) again, improved 1.5% than the efficient of the 80Y100 * 2 type two-stage single suction cantilever type centrifugal oil pumps of same specification.
2. 50 sprung parts (6) of original 80Y100 * 2 type pumps are changed into improve 55 sprung parts (6) after, increase sprung parts (6) intensity and rigidity, and improved pump running security and stability, reduce vibration and noise.
3.80AY100 the bearing support cooling means of the sprung parts of * 2 type pumps (6) has cold three kinds of water-cooled, air cooling, fan, can be according to the different serviceability temperature of pump, and territory of use's situation is selected for use.
4.80AY100 * 2 type pumps can be widely used in petroleum refinement, petrochemical industry and chemical industry and other local oil, liquefied petroleum gas (LPG) and other media that does not contain solid particle of carrying.
Description of drawings:
Fig. 1 is 80AY100 * 2 type two-stage single suction cantilever type centrifugal oil pump schematic representation: (1) front pump, (2) pump housing, (3) pump cover, (4) stud bolt, (5) nut, (6) sprung parts, (7) impeller nut, (8) sencond stage impeller, (9) pump shaft, (10) one-level impeller, (11) stuffing box packing parts.
Fig. 2 is the fan cooled structural representation of the bearing support of 80AY100 * 2 type two-stage single suction cantilever type centrifugal oil pump sprung parts (6):
(12) fan guard, (13) fan.
Embodiment:
80AY100 * 2 two-stage single suction cantilever type centrifugal oil pumps, be that original 80Y100 * 2 type pump structures and main part are improved, original 80Y100 * the one-level of 2 type pumps, sencond stage impeller are to suck from pump housing two ends, the one-level of the 80AY100 after the improvement * 2 type pumps, sencond stage impeller suck in the middle of the pump housing, interstage diaphragm in the middle of the cancellation, main to original 80Y100 * 2 type pumps has: the pump housing, pump cover, one-level impeller, sencond stage impeller, pump shaft and sprung parts improve, and part key dimension before improving and the part key dimension contrast after the improvement is as follows:
1. the pump housing (2)
The pump housing (with the pump cover match end) outside diameter is φ 410mm, and improving the back is φ 405mm; With the pump cover seam aperture that matches be φ 341mm, improving the back is φ 315H7mm; With the pump cover aperture that matches be φ 320Dmm, improving the back is φ 295mm; Volute chamber I base circle diameter (BCD) is φ 320mm, and improving the back be φ 292mm, and the suction port seal ring I aperture that matches does not have, and improving afterwards is φ 145H7mm; Suction port I aperture does not have, and improving the back is φ 140mm; Do not have with the internal liner aperture that matches, improving the back is φ 75H7mm; Suction port II aperture is φ 92mm, and improving the back be φ 114.5mm, and the suction port seal ring II aperture that matches is φ 135Dmm, and improving afterwards is φ 125H7mm; Volute chamber II base circle diameter (BCD) φ 300mm, improving the back is φ 292mm; Do not have with the front pump cover aperture that matches, improving the back be φ 295mm, does not have with the front pump cover seam aperture that matches, and improving the back be φ 315H7mm, do not have with front pump cover match end outside diameter, and be φ 405mm after the improvement; The suction pipe center is 47mm to the distance at volute chamber I center, and improving the back is 64mm, and the exterior edge face is 164mm to volute chamber I center, and improving the back is 62mm, and volute chamber I center is 45mm to the distance at volute chamber II center, and improving the back is 128mm; Volute chamber II center does not have to the distance of exterior edge face, and improving the back is 67mm; Volute chamber I, II width are 24mm; Improving the back is 29mm; Wall thickness is 18mm, and improving the back is 16mm.
2. pump cover (3)
The pump cover outside diameter is φ 410mm, and improving the back is φ 405mm; With the pump housing seam external diameter that matches be φ 340mm, improving the back be φ 315g6mm, with the pump housing external diameter that matches be φ 320dbmm, improving afterwards is φ 294mm; Front-end face is 108mm to the large end face distance, and improving the back is 47mm, and the pump cover total length is 199mm, and improving the back is 113mm; The stuffing box bore dia is φ 85D6mm, and improving the back is φ 90H8mm; The stuffing box hole length is 110mm, and improving the back is 103mm; Cooling chamber seam diameter is φ 215D4mm, and improving the back is φ 215H9mm; With cooling chamber cylindrical seam diameter be φ 105dc6mm, improving the back be φ 150e8mm, with suspension positioning spigot diameter be φ 265dmm, improving afterwards is φ 230h8mm.
3. one-level impeller (10)
It is φ 90mm that impeller sucks the aperture, and improving the back is φ 95.5mm; The seal ring external diameter that matches is φ 105gdmm, improves back φ 120js6mm; The impeller outer circular diameter is φ 290mm, and improving the back is φ 292mm; The impeller total length is 52mm, is 63 ± 0.05mm after the improvement; Suction side navel diameter is φ 45mm, and improving the back is φ 57mm; With the axle aperture that matches be φ 32Dmm, improving the back is φ 45H7mm; The hole total length is to be 63 ± 0.05mm after 40 ± 0.05mm improves; Rear end navel diameter is φ 45mm, and improving the back is φ 65h8mm; Impeller water outlet width is 6.5mm, and improving the back is 6.5mm; The impeller front end is 42.mm to the distance at water outlet center, and improving the back is 36.5mm; The number of blade is 5 pieces, is 4 pieces after the improvement; Blade shape is a prismatic blade, and improving the back is prismatic blade; Subtended angle of blade is 148 °, is 180 ° after the improvement.
4. pump shaft (9)
The pump shaft total length is 802mm, and improving the back is 760mm; With the impeller external diameter that matches be φ 32dmm, improving the back is φ 45h6mm; With the axle sleeve external diameter that matches be φ 45dbmm, improving the back is φ 48h6mm, φ 54h6mm; With the fore bearing external diameter that matches be φ 50gdmm, improving the back is φ 60js6mm; With the rear bearing external diameter that matches be φ 50gdmm, improving the back is φ 55js6mm; With the coupling external diameter that matches be φ 35gdmm, improving the back is φ 45K6mm; Wide for 8d4 with the coupling outer radius keyway that matches, improving the back is 14N9mm.
5. sencond stage impeller (8)
The suction eye aperture is φ 90mm, and improving the back is φ 86mm; The seal ring external diameter that matches is φ 105gdmm, and improving the back is φ 98js6mm; The impeller outer circular diameter is 290mm, and improving the back is φ 292mm; The impeller total length is 52mm, and improving the back is 70mm; Suction side navel diameter is φ 45mm, and improving the back is φ 57mm; With the axle aperture that matches be φ 32Dmm, improving the back is φ 45H7mm; The hole total length is 40 ± 0.05mm, is 47 ± 0.05mm after the improvement; Rear end navel diameter is φ 45mm, and improving the back is aperture φ 80mm; The back-end sealing ring external diameter that matches does not have, and improving the back is φ 98js6mm; Impeller water outlet width is 6.5mm, and improving the back is 6.5mm; The impeller front end is 42mm to the distance at water outlet center, and improving the back is 33.5mm; The number of blade is 5 pieces, is 4 pieces after the improvement; Blade shape is prismatic blade, and improving the back is prismatic blade; Subtended angle of blade is 148 °, is 180 ° after the improvement.
6. sprung parts (6)
Change original 50 suspensions into improved 55 suspensions, suspension flange outside diameter is φ 280mm, and improving the back is φ 292mm; With the pump cover seam aperture that matches be φ 265Dmm, improving the back is φ 230H7mm; The bearing support outside diameter is φ 148mm, and improving the back is φ 292mm; Between to connect the rib width be 120mm, improving the back is 159mm; Rib thickness is 12mm, and improving the back is 24mm; Suspension length is 405mm, and improving the back is 343-0.1mm; Two bearing support joint thickness are 10mm, and improving back thinnest part thickness is 13mm.
7. increase front pump cover (1)
Original 80Y100 * 2 type pumps do not have, and increase after improving.Outside diameter is φ 405mm, with the pump housing seam external diameter that matches be φ 315g6mm, with the pump housing external diameter that matches be φ 294mm, the seal ring aperture that matches is φ 125H7mm, front-end face is 50mm to the distance of big end, the front pump cover total length is 90mm, wall thickness is 20mm.
80AY100 after the improvement * 2 type pumps through evidence in original 80Y100 * 2 type pump performance parameters: under flow, lift, rotating speed, intake flange diameter, the discharge opening flange diameter same case, improve the back pump efficiency and improve 1.5%.Improve rear suspension intensity and rigidity and strengthen, it is stable poor not exist, and generation vibration and noise weaken greatly during the pump running, and less than state specified standards, the bearing portion heating value is lower than the emblem mark standard, and it is satisfied to reach the user.
Claims (4)
1, the 80AY100 that a kind of petrochemical industry is used * 2 type two-stage single suction cantilever type centrifugal oil pumps, by front pump cover (1), the pump housing (2), pump cover (3), stud bolt (4), nut (5), sprung parts (6), impeller nut (7), sencond stage impeller (8), pump shaft (9), one-level impeller (10) and stuffing box packing parts (11) are formed, stud bolt (4) is contained in the pump housing (2), on the pump cover (3), stuffing box packing parts (11) are contained in the pump cover (3), sprung parts (6) supporting pump shaft (9), pump cover (3) is enclosed within pump shaft (9) and joins fastening with nut (5) with sprung parts (6), one-level impeller (10) and axle sleeve are contained on the pump shaft (9), the pump housing (2) joins fastening with nut (5) with pump cover (3), sencond stage impeller (8) is contained on the interior pump shaft (9) of the pump housing (2), and it is fastening with impeller nut (7), it is upward fastening with nut (5) that front pump cover (1) is contained in the pump housing (2), it is characterized in that:
The A pump housing (2) improves
The pump housing (2) (with the pump cover match end) outside diameter is φ 405mm, with the pump cover seam aperture that matches be φ 315H7mm, with the pump cover aperture that matches be φ 295mm, volute chamber I base circle diameter (BCD) is φ 292mm, the suction port seal ring I aperture that matches is φ 145H7mm, suction port I aperture is φ 140mm, with the internal liner aperture that matches be φ 75H7mm, suction port II aperture is φ 114.5mm, the suction port seal ring II aperture that matches is φ 125H7mm, and volute chamber II base circle diameter (BCD) is φ 292mm, with the front pump cover aperture that matches be φ 295mm, with the front pump cover seam aperture that matches be φ 315H7mm, with front pump cover match end outside diameter be φ 405mm, the suction pipe center is 64mm to the distance at volute chamber I center, volute chamber I center is 62mm to the distance of exterior edge face, volute chamber I center is 128mm to the distance at volute chamber II center, volute chamber II center is 67mm to the distance of exterior edge face, and pump housing length overall is 257mm, and volute chamber I width is 29mm, volute chamber II width is 29mm, and wall thickness is 16mm;
B. pump cover (3) improves
The pump cover outside diameter is φ 405mm, with the pump housing seam external diameter that matches be φ 315g6mm, with the pump housing external diameter that matches be φ 294mm, front-end face is 47mm to the large end face distance, the pump cover total length is 113mm, with the throat lining aperture that matches be φ 75H7mm, the stuffing box bore dia is φ 90H8mm, and the stuffing box hole length is 103mm, and the cooling chamber aperture is φ 215H9mm, cooling chamber cylindrical seam diameter is φ 150e8mm, with suspension positioning spigot diameter be φ 230h8mm;
C. one-level impeller (10) improves
The suction eye aperture is φ 95.5mm, and the seal ring external diameter that matches is φ 120js6mm, and the impeller outer circular diameter is φ 292mm, the impeller total length is 63 ± 0.05mm, suction side navel diameter is φ 57mm, with the axle aperture that matches be φ 45H7mm, the hole total length is 63 ± 0.05mm, rear end navel diameter is φ 65h8mm, impeller water outlet width is 6.5mm, and the impeller front end is 36.5mm to the distance at water outlet center, and the number of blade is 4 pieces, blade shape is the prismatic blade type, and subtended angle of blade is 180 °;
D. pump shaft (9) improves
The pump shaft total length is 760mm, with the impeller external diameter that matches be φ 45h6mm, with the axle sleeve external diameter that matches be φ 48h6mm, φ 54h6mm, with the fore bearing external diameter that matches be φ 60js6mm, with the rear bearing external diameter that matches be φ 55js6mm, with the coupling external diameter that matches be φ 45k6mm, matching with coupling, the outer radius keyway is wide to be 14N9mm;
E. sencond stage impeller (8) improves
The suction eye aperture is φ 86mm, and the seal ring external diameter that matches is φ 98js6mm, and the impeller outer circular diameter is φ 292mm, the impeller total length is 70mm, and suction side navel diameter is φ 57mm, with the axle aperture that matches be φ 45H7mm, the hole total length is 47 ± 0.05mm, the aperture, rear end is φ 80mm, and the back-end sealing ring external diameter that matches is φ 98js6mm, and the impeller water outlet is wide to be 6.5mm, the impeller front end is 33.5mm to the distance at water outlet center, the number of blade is 4 pieces, and blade shape is a prismatic blade, and subtended angle of blade is 180 °;
F. sprung parts (6) improves
Suspension flange outside diameter is φ 292mm, with the pump cover seam aperture that matches be φ 230H7mm, the bearing support outside diameter is φ 292mm, between to connect the rib width be 159mm, rib thickness is 24mm, suspension length is 343-0.4mm, and the bearing support joint thinnest part wall thickness of two bearings is 13mm, and the cooling means of sprung parts (6) has water-cooled, air cooling, fan cold;
G. increase front pump cover (1)
Front pump cover cylindrical stalk directly is φ 405mm, with the pump housing seam external diameter that matches be φ 315g6mm, with the pump housing external diameter that matches be φ 294mm, the seal ring aperture that matches is φ 125H7mm, front-end face is 50mm to the distance of large end face, and the front pump cover total length is 90mm, and wall thickness is 20mm.
2, the suspension shaft bearing cooling means of the sprung parts (6) of 80AY100 according to claim 1 * 2 type two-stage single suction cantilever type centrifugal oil pumps is to adopt water-cooled, the supporting axle bearing sleeve cylindrical that it is characterized in that being the front-end bearing pedestal of suspension is cast with annular cooling chamber, after the sealing, mobile cooling water can flow through from cooling chamber.
3, the suspension shaft bearing cooling means of the sprung parts (6) of 80AY100 according to claim 1 * 2 type two-stage single suction cantilever type centrifugal oil pumps is to adopt air cooling, it is characterized in that the outer surface that is the suspension shaft bearing is cast with radiating fin.
4, the suspension shaft bearing cooling means of the sprung parts (6) of 80AY100 according to claim 1 * 2 type two-stage single suction cantilever type centrifugal oil pumps is to adopt fan cold, it is characterized in that being that the strut bearing base rear end is equipped with fan guard (12), the fan (13) in the fan guard (12) is contained on the pump shaft (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228112 CN2194989Y (en) | 1994-03-23 | 1994-03-23 | 80 AY 100X2 model double-stage single-suction cantilever centrifugal oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228112 CN2194989Y (en) | 1994-03-23 | 1994-03-23 | 80 AY 100X2 model double-stage single-suction cantilever centrifugal oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2194989Y true CN2194989Y (en) | 1995-04-19 |
Family
ID=33840721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94228112 Expired - Fee Related CN2194989Y (en) | 1994-03-23 | 1994-03-23 | 80 AY 100X2 model double-stage single-suction cantilever centrifugal oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2194989Y (en) |
-
1994
- 1994-03-23 CN CN 94228112 patent/CN2194989Y/en not_active Expired - Fee Related
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|---|---|---|---|
| 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 |