CN102536834A - Single-stage double-suction and double-outlet deep well pump - Google Patents
Single-stage double-suction and double-outlet deep well pump Download PDFInfo
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- CN102536834A CN102536834A CN2010105964185A CN201010596418A CN102536834A CN 102536834 A CN102536834 A CN 102536834A CN 2010105964185 A CN2010105964185 A CN 2010105964185A CN 201010596418 A CN201010596418 A CN 201010596418A CN 102536834 A CN102536834 A CN 102536834A
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Abstract
A single-stage double-suction and double-outlet deep well pump comprises a pump body component, a transmission component and a pipeline component. The pump body component comprises a volute, an impeller, an upper suction inlet and a lower suction inlet, the impeller is a double-suction type impeller structure, the volute is a rotatable symmetric double-outlet structure, and two outlets of the volute are joined and connected with a header pipe; the transmission component comprises a spindle and a bearing block, the spindle is supported by a clutch and a cylindrical roller bearing and connected with the impeller, a shaft seal of the spindle comprises a mechanical seal on a lubricating medium side and a shaft seal body on a delivery medium side, and a bearing which is connected with the spindle is disposed in the bearing block; and the pipeline component comprises a first branch pipe, a second branch pipe, the header pipe and an air-lift pipe, the first branch pipe and the second branch pipe are connected with the outlets of the volute, and the air-lift pipe is mounted on the header pipe. The deep well pump comprises the double-suction impeller and the double-outlet volute, a prime motor is placed in a well and is applicable to fast and safe extracting and delivering of various types of liquid media in various storage tanks and cargo spaces, and simultaneously, the single-stage double-suction and double-outlet deep well pump has the advantages that a pump shaft is short, flow is high, work is stable, medium leakage is detected automatically, and the like.
Description
Technical field
The present invention relates to a kind of single-stage deep-well pump; Be particularly related to a kind of vertical single stage deep-well pump with double suction inlet and two outlet volutes; Be applicable to the big flow volume delivery and the discharge of industry liquid mediums such as oil, chemical industry, accumulating, belong to fluid machinery and chemical machinery technical field.
Background technique
In oil, industrial chemicals storage and transport process; Usually in a large number use large-scale storage tanks, cargo ship stores or transport all kinds of liquid mediums; Can for liquid medium all need be used pump with discharging; Particularly the discharge of jar interior medium need be adopted immersed pump or long shaft submerged pump, realizes jar safe, the quick conveying of interior medium through pump.In view of the particularity of petrochemical industry warehousing and transportation facilities, it is current most common form that vertical deep-well pump is set above storage tank or storage tank.Yet; Because storage tank or storage tank are often very dark; And the part occasion requires deep-well pump to have big flow, high-lift performance; Brought problem for thus the reliability and the operation stability of deep-well pump,, must adopt an effective measure at aspects such as stability of structure, flow passage components working stability, the automatic detections of dielectric leakage in order to improve reliability of operation.
In traditional application, the deep-well pump that is used for oil product, chemical delivery adopts vertical major axis structure mostly, and motor is placed the tank deck top, and the pump housing places under the liquid, so this type pump often is called as long shaft submerged pump again.The structural type of long shaft submerged pump can avoid motor to contact with flammable and combustible liquids; But storage tank or storage tank for the big degree of depth; Have to adopt very long pump shaft, this type pump shaft reaches more than the 10m sometimes, and the amount of deflection of major axis pump rotor is big, the less stable of rotor; Problems such as bearing wear cause rate of fault higher relatively, also make troubles to installation when coming potential safety hazard for part danger medium conveyor belt.For this reason; The part occasion adopts immersed pump to replace the basic structure form of long shaft submerged pump as deep-well pump both at home and abroad; As the vertical deep-well pump that utilizes oil hydraulic motor or shield electric machine to drive, they place pump head under the liquid with drive unit, have reduced pump shaft length thus greatly; Improved the working stability of pump shaft largely, and then the reliability of deep-well pump is got a promotion.
On the other hand, comprise that common horizontal centrifugal pump, vertical centrifugal pump, Under Water Pumps adopt the worm frame of single outlet and the impeller of unidirectional suction mostly.The worm frame of single outlet is the most frequently used structural type of Ordinary Centrifugal Pumps, and in this worm frame, the liquid medium after being boosted by impeller is discharged through the single outlet of spiral case.When under declared working condition, working, flow velocity around the impeller in the spiral case and pressure are basic evenly to distribute, and is symmetry status, and the radial force that acts on the impeller approaches zero.When the pump work flow is greater than or less than rated flow; The flow rate of liquid and the pressure distribution of interior each section of spiral case are inhomogeneous around the impeller; Can on impeller, produce uneven radial force, for of the working stability almost not influence of this structure in the workplace of non-major axis to pump.Yet; For deep-well pump, no matter be major axis structure or immersed pump structure, its abhiseca exhaust port is very long apart from the Pump Suction Nozzle distance; The radial force that acts on axle head makes axle produce bigger degree of disturbing; Unsettled radial force possibly cause the vibration aggravation, causes the rapid wearing of seal ring and axle sleeve, and causes noise easily.Even more serious is that for the pump shaft of rotation, radial force or alternate load, bigger radial force can make axle destroy because of tired, have a strong impact on the reliability and the physical life of deep-well pump.Simultaneously,, adopt common unidirectional intake impeller not only to cause efficient reduction, bad stability, also influence the reliability of axle system simultaneously because of axial force is excessive owing to the impeller specific speed is bigger than normal because the part occasion requires deep-well pump to promote feed flow.
Therefore; The application demand that has the increasing of the tank body degree of depth, feed flow increasing, deep-well pump working stability and reliability requirement raising to many occasions; Design more rational deep-well pump structure; Accumulating industry to oil, chemical substance has great importance, and this also is a starting point of the present invention.
Summary of the invention
The present invention overcomes the deficiency that exists in the existing technology, and it is short and can autobalance axial force of impeller and the two outlet deep-well pumps of the large flow single-stage double suction of spiral case radial force to the purpose of this invention is to provide a kind of pump shaft, and the transporting velocity of raising liquid.
For reaching above-mentioned purpose; The present invention is the two outlet deep-well pumps of a kind of single-stage double-suction; It comprises pump assembly, transmission part and pipeline component, pump assembly comprise spiral case, impeller and respectively with spiral case two last suction port and following suction ports that inlet links to each other up and down, impeller is the double-sided impeller structure; Spiral case adopts rotational symmetric double outlet structure, and two outlets of said spiral case converge with house steward in pump housing upper end and are connected; Transmission part comprises main shaft and the bearing support that is positioned at the spiral case top; Main shaft is supported by clutch and roller bearing; Link to each other with impeller after running through bearing support and some axle sleeves successively; The axle package of main shaft is drawn together the mechanical seal of lubricant medium side and the axle envelope of fed sheet of a media side, is provided with the bearing that links to each other with main shaft in the bearing support; Pipeline assembly comprises first branched pipe and second branched pipe, the house steward who is connected with the spiral case outlet and is contained in the stripping tube on the house steward.
The two outlet deep-well pumps of described single-stage double-suction, wherein, said pipeline assembly also comprises the gentle stop valve of carrying of the suction valve that is separately positioned on the house steward, stop valve is near house steward's outlet; The two ends of stripping tube are connected with the house steward who is positioned at the stop valve both sides respectively.
The two outlet deep-well pumps of described single-stage double-suction, wherein, said pipeline assembly also comprises the gentle stop valve of carrying of the suction valve that is separately positioned on the house steward, stop valve is near house steward's outlet; The stripping tube inlet is positioned at the spiral case outlet end, and the outlet of stripping tube is positioned at the downstream of stop valve.
The two outlet deep-well pumps of described single-stage double-suction, wherein, the leakage of said mechanical seal and axle envelope is by the sensor of lower end, cofferdam layout.
The two outlet deep-well pumps of described single-stage double-suction, wherein, the main shaft upper end is processed with internal spline, and prime mover output terminal is processed with external splines, and said main shaft and prime mover pass through splined.
The two outlet deep-well pumps of described single-stage double-suction, wherein, said clutch adopts overrunning clutch.
The two outlet deep-well pumps of described single-stage double-suction, wherein, the two outlet deep-well pump integral body of said single-stage double-suction place on the base.
Further improvement as single-stage deep-well pump of the present invention: adopt the double-entry impeller structure of symmetry, at first can improve big flow volume delivery ability, improve the working stability of pump under the small flow, but be used for the axial force that the work of balance impeller produces simultaneously.
Further improvement as single-stage deep-well pump of the present invention: spiral case adopts rotational symmetric double outlet structure; Radial cross section is two scroll casing shape runners that are symmetrically distributed with the axle center; Two symmetrical water outlets are arranged vertically; This structure makes that the radial force size that acts on the impeller is identical, and direction differs 180 °, cancels out each other.
Further improvement as single-stage deep-well pump of the present invention: prime mover connects with main shaft through spline, and main shaft links to each other with impeller after running through bearing support, and on main shaft, is provided with black box, stops the interior lubricant oil of fed sheet of a media and bearing support to pollute each other.
Further improvement as single-stage deep-well pump of the present invention: pipeline assembly also comprises stripping tube and is separately positioned on gas valve and the stop valve on the medium discharge tube that stop valve is near the outlet of medium discharge tube; The two ends of stripping tube are connected with the medium discharge tube that is positioned at the stop valve both sides respectively, are used for draining the remaining liquid of pipeline.
Further improvement as single-stage deep-well pump of the present invention: black box also comprises the leakage monitoring sensor, guarantees to reveal and can in time find, avoids carrying the contaminated or major accident generation of liquid.
Further improvement as single-stage deep-well pump of the present invention: also be provided with the overrunning clutch that links to each other with main shaft in the bearing support, prevent that the main shaft counter-rotating from causing damage to prime mover.
Further improvement as single-stage deep-well pump of the present invention: the two outlet deep-well pump integral body of single-stage double-suction place on the base, when making the deep-well pump secure fixation, are convenient to the whole dismounting of deep-well pump.
In sum; The two outlet deep-well pumps of single-stage double-suction of the present invention have axial force with radial force is little, working stability, compact structure, be easy to install, be easy to characteristics such as chemical product cleaning and Leak testtion be safe and reliable, can satisfy the interior all kinds of routines of big degree of depth storage tank of suction or storage tank and the requirement of dangerous liquid medium.
Description of drawings
Do further explain below in conjunction with the accompanying drawing specific embodiments of the invention.
Fig. 1 is two outlet deep-well pump first embodiments' of a single-stage double-suction of the present invention sectional view;
Fig. 2 A and Fig. 2 B are respectively the sectional view and the plan view of two outlet volutes;
Fig. 3 is two outlet deep-well pump second embodiments' of a single-stage double-suction of the present invention sectional view.
Description of reference numerals: following suction port 1; Lower cover plate 2; Impeller 3; Spiral case 4; Upper cover plate 5; Last suction port 6; Sensor 7; Cofferdam 8; Intermediate shaft sleeve 9; Bearing support 10; Upper shaft sleeve 11; Clutch 12; Lock washer 13; Prime mover 14; First branched pipe 15; House steward 16; Stop valve 17; Suction valve 18; Gas is carried stop valve 19; Stripping tube 20; Second branched pipe 21; Selfaligning ball bearing 22; Locking nut 23; First key 24; Roller bearing 25; Mechanical sealing base 26; Mechanical seal 27; Axle envelope 28; Lower shaft sleeve 29; Main shaft 30; Sealing opening ring 31; Base 32; Second key 33; Impeller nut 34; Support 35; Storage tank bottom surface A; Shaft bottom face B; Lowest water level C.
Embodiment
Fig. 1～Fig. 3 combines to have provided the two outlet deep-well pumps of a kind of single-stage double-suction, and it comprises: members such as pump assembly, transmitting assemblies, black box and pipeline assembly.
Pump assembly comprises following suction port 1, lower cover plate 2, impeller 3, spiral case 4, upper cover plate 5, goes up suction port 6, sealing opening ring 31, base 32 and support 35.Following suction port 1 connects with lower cover plate 2 and upper cover plate 5 respectively through screw with last suction port 6; Lower cover plate 2 connects with spiral case 4 through screw again with upper cover plate 5.To the guide-localization effect of spiral case 4, support 35 the pump integrated support got up when base 32 is used to install, make its and shaft bottom face B have certain interval, be convenient to the liquid suction.Storage tank bottom surface A is provided with shallow well, and well depth makes the interior water level of storage tank be kept above the last suction port 6 of impeller 3 greater than 370mm, avoids impeller 3 idle running.Face B is beneficial to liquid and sucks greater than 60mm the following suction port 1 of pump apart from the shaft bottom during installation.
Transmission part comprises main shaft 30, and the upper end of main shaft 30 is processed with internal spline, and the output shaft of prime mover 14 (can be oil hydraulic motor or shield electric machine) is processed with external splines, realizes the transmission of main shaft 30 and prime mover 14 through inside and outside spline engagement.Main shaft 30 is supported by selfaligning ball bearing 22 and roller bearing 25, and the bearing outer ring of selfaligning ball bearing 22 and roller bearing 25 connects with bearing support 10 interference fit.Outer surface at main shaft 30 is provided with clutch 12, Upper shaft sleeve 11, Intermediate shaft sleeve 9 and Lower shaft sleeve 29 from top to bottom successively; Because Upper shaft sleeve 11 is to connect through first key 24 with clutch 12; And clutch 12 connects with bearing support 10; Therefore clutch 12 can realize preventing main shaft 30 counter-rotatings, and in addition, the part on Upper shaft sleeve 11, Intermediate shaft sleeve 9 and 29 pairs of main shafts 30 of Lower shaft sleeve plays the axially locating effect.Impeller 3 connects with main shaft 30 through second key 33, and realizes axially locating through impeller nut 34 and Lower shaft sleeve 29.
Described clutch 12 can be selected overrunning clutch for use.
Black box comprises mechanical seal 27, cofferdam 8 and mechanical sealing base 26 etc.Mechanical seal 27 is installed in the mechanical sealing base 26, and mechanical sealing base 26 is fixedly linked with bearing support 10 hermetically, and cofferdam 8 is sleeved on outside the mechanical sealing base 26.Axle envelope 28 between Lower shaft sleeve 29 and cofferdam 8 settings, axle envelope 28 can adopt the bone RunddichtringO.
Pipeline assembly comprises first branched pipe 15 and second branched pipe 21 that is connected with spiral case 4 outlet, and house steward 16 and be contained in stripping tube 20 on the house steward 16.Described first branched pipe 15 and second branched pipe 21 converge the back once more and are communicated with said house steward 16.Be respectively equipped with suction valve 18 and stop valve 17 on the house steward 16, stop valve 17 is near house steward 16 outlet.The outlet end of stripping tube 20 links to each other with house steward 16 outlet (being positioned at the downstream of stop valve 17), and the entrance point of stripping tube 20 links to each other with house steward 16 import; On stripping tube 20, be provided with gas and carry stop valve 19, this gas is proposed the open and close that stop valve 19 is used to control stripping tube 20.House steward's 16 length can be regulated arbitrarily according to actual needs, and house steward 16 outlet end is positioned on the operating platform, are convenient to operation.
Because two suction port symmetries of impeller 3, and spiral case 4 radial symmetric, the end thrust that produces during work and radial thrust equal and opposite in direction, in the opposite direction, to make a concerted effort be zero; The deadweight that selfaligning ball bearing 22 and 25 of roller bearings bear the rotor and the pump rotor of prime mover 14, bearing radial force not greatly reduces the load of bearing, has fundamentally improved the reliability of deep-well pump, has prolonged bearing life.
First embodiment
The two outlet deep-well pumps of the single-stage double-suction of present embodiment; Its detailed structure is as shown in Figure 1; It comprises pump assembly, transmission part and pipeline component, pump assembly comprise spiral case 4, impeller 3 and respectively with spiral case two last suction port 6 and following suction ports 1 that inlet links to each other about in the of 4, impeller 3 is the double-sided impeller structure; Spiral case 4 adopts rotational symmetric double outlet structure, and two outlets converge with house steward 16 in pump housing upper end and connect; Transmission part comprises main shaft 30 and the bearing support 10 that is positioned at spiral case 4 tops; Main shaft 30 is supported by clutch 12 and roller bearing 25; Link to each other with impeller 3 after running through bearing support 10 and some axle sleeves successively; The axle package of main shaft 30 is drawn together the mechanical seal 27 of lubricant medium side and the axle envelope 28 of fed sheet of a media side, is provided with the bearing that links to each other with main shaft 30 in the bearing support 10; Pipeline assembly comprises first branched pipe 15 that is connected with spiral case 4 outlet and second branched pipe 21, house steward 16, stripping tube 20, and stripping tube 20 enters the mouth and is positioned at stop valve 17 upper reaches on the house steward 16, exports to be positioned at stop valve 17 downstream.
Under the normal working, the stop valve 17 on the house steward 16 is opened, suction valve 18 cuts out, and the gas on the stripping tube 20 is carried stop valve 19 and closed; Impeller 3 is transmitted medium and discharges through house steward 16 through prime mover 14 rotary driving at this moment.
After the transmission medium in the storage tank is evacuated, gets into gas and carry the stage.Close stop valve 17, gas is carried stop valve 19, feeds gas from suction valve 18, discharges medium residual in the house steward 16 through stripping tube 20.At this moment, the impeller 3 of pump low speed rotation under the drive of prime mover 14 plays the effect that stops medium back flow.
If mechanical seal 27 was lost efficacy, the oil leakage in the bearing support 10 is to cofferdam 8; Perhaps axle envelope 28 lost efficacy, and carried leak of liquid in cofferdam 8, all can detect the harm of having avoided a large amount of leakages to cause through the sensor 7 that 8 lower ends, cofferdam are arranged.
Second embodiment
The two outlet deep-well pumps of the single-stage double-suction of present embodiment; Its detailed structure is as shown in Figure 3; It comprises pump assembly, transmission part and pipeline component, pump assembly comprise spiral case 4, impeller 3 and respectively with spiral case two last suction port 6 and following suction ports 1 that inlet links to each other about in the of 4, impeller 3 is the double-sided impeller structure; Spiral case 4 adopts rotational symmetric double outlet structure, and two outlets converge with house steward 16 in pump housing upper end and connect; Transmission part comprises main shaft 30 and the bearing support 10 that is positioned at spiral case 4 tops; Main shaft 30 is supported by clutch 12 and roller bearing 25; Link to each other with impeller 3 after running through bearing support 10 and some axle sleeves successively; The axle package of main shaft 30 is drawn together the mechanical seal 27 of lubricant medium side and the axle envelope 28 of fed sheet of a media side, is provided with the bearing that links to each other with main shaft 30 in the bearing support 10; Pipeline assembly comprises first branched pipe 15 that is connected with spiral case 4 outlet and second branched pipe 21, house steward 16, stripping tube 20, and stripping tube 20 enters the mouth and is positioned at spiral case 4 outlet end, exports to be positioned at stop valve 17 downstream.
Under the normal working, the stop valve 17 on the house steward 16 is opened, suction valve 18 cuts out, and the gas on the stripping tube 20 is carried stop valve 19 and closed; Impeller 3 is transmitted medium and discharges through house steward 16 through prime mover 14 rotary driving at this moment.
After the transmission medium in the storage tank is evacuated, gets into gas and carry the stage.Close stop valve 17, gas is carried stop valve 19, feeds gas from suction valve 18, discharges medium residual in house steward 16, first branched pipe 15 and second branched pipe 21 through stripping tube 20.At this moment, the impeller 3 of pump low speed rotation under the drive of prime mover 14 plays the effect that stops medium back flow.
If mechanical seal 27 was lost efficacy, the oil leakage in the bearing support 10 is to cofferdam 8; Perhaps axle envelope 28 lost efficacy, and carried leak of liquid in cofferdam 8, all can detect the harm of having avoided a large amount of leakages to cause through the sensor 7 that 8 lower ends, cofferdam are arranged.
At last, it is also to be noted that what more than enumerate only is two specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (7)
1. two outlet deep-well pumps of a single-stage double-suction; It is characterized in that: comprise pump assembly, transmission part and pipeline component; Pump assembly comprise spiral case (4), impeller (3) and respectively with spiral case (4) two last suction port (6) and following suction ports (1) that inlet links to each other up and down; Impeller (3) is the double-sided impeller structure, and spiral case (4) adopts rotational symmetric double outlet structure, and two outlets of said spiral case (4) converge with house steward (16) in pump housing upper end and are connected; Transmission part comprises main shaft (30) and is positioned at the bearing support (10) of spiral case (4) top; Main shaft (30) is supported by clutch (12) and roller bearing (25); Link to each other with impeller (3) after running through bearing support (10) and some axle sleeves successively; The axle package of main shaft (30) is drawn together the mechanical seal (27) of lubricant medium side and the axle envelope (28) of fed sheet of a media side, is provided with the bearing that links to each other with main shaft (30) in the bearing support (10); Pipeline assembly comprises first branched pipe (15) and second branched pipe (21), the house steward (16) who is connected with spiral case (4) outlet and is contained in the stripping tube (20) on the house steward (16).
2. the two outlet deep-well pumps of single-stage double-suction according to claim 1, it is characterized in that: said pipeline assembly also comprises the gentle stop valve (19) of carrying of the suction valve (17) that is separately positioned on the house steward (16), and stop valve (17) is near the outlet of house steward (16); The two ends of stripping tube (20) are connected with the house steward (16) who is positioned at stop valve (17) both sides respectively.
3. the two outlet deep-well pumps of single-stage double-suction according to claim 1, it is characterized in that: said pipeline assembly also comprises the gentle stop valve (19) of carrying of the suction valve (17) that is separately positioned on the house steward (16), and stop valve (17) is near the outlet of house steward (16); Stripping tube (20) inlet is positioned at spiral case (4) outlet end, and the outlet of stripping tube (20) is positioned at the downstream of stop valve (17).
4. the two outlet deep-well pumps of single-stage double-suction according to claim 1 is characterized in that: the sensor (7) that the leakage of said mechanical seal (27) and axle envelope (28) is arranged by lower end, cofferdam (8) detects.
5. the two outlet deep-well pumps of single-stage double-suction according to claim 1 is characterized in that: main shaft (30) upper end is processed with internal spline, and prime mover (14) output terminal is processed with external splines, and said main shaft (30) passes through splined with prime mover (14).
6. the two outlet deep-well pumps of single-stage double-suction according to claim 1, it is characterized in that: said clutch (12) adopts overrunning clutch.
7. the two outlet deep-well pumps of single-stage double-suction according to claim 1 is characterized in that: the two outlet deep-well pump integral body of said single-stage double-suction place on the base (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105964185A CN102536834A (en) | 2010-12-20 | 2010-12-20 | Single-stage double-suction and double-outlet deep well pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105964185A CN102536834A (en) | 2010-12-20 | 2010-12-20 | Single-stage double-suction and double-outlet deep well pump |
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| CN102536834A true CN102536834A (en) | 2012-07-04 |
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| CN2010105964185A Pending CN102536834A (en) | 2010-12-20 | 2010-12-20 | Single-stage double-suction and double-outlet deep well pump |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966599A (en) * | 2012-11-07 | 2013-03-13 | 无锡惠山泵业有限公司 | Water pump equipment |
| CN104121205A (en) * | 2014-06-27 | 2014-10-29 | 肖琼 | Submersible slurry pump |
| CN105697381A (en) * | 2014-11-28 | 2016-06-22 | 上海凯士比泵有限公司 | Vertical dynamic suspension pump |
| CN108626130A (en) * | 2018-03-01 | 2018-10-09 | 江苏大学 | A kind of high-temperature melting salt pump of the double outlet double volute pump bodies of band |
| CN112412807A (en) * | 2019-08-20 | 2021-02-26 | 上海连成（集团）有限公司 | Double-suction volute core-pulling type long-shaft pump |
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| DE3011865A1 (en) * | 1980-03-27 | 1981-10-01 | Klein, Schanzlin & Becker Ag, 6710 Frankenthal | SUCTION LEVEL FOR A VERTICALLY SET CONDENSATE PUMP |
| CN2285839Y (en) * | 1996-03-20 | 1998-07-08 | 刘向东 | Dual-volute double-outlet connection pipe built-in electric submersible pump |
| CN2340952Y (en) * | 1998-09-16 | 1999-09-29 | 方松泉 | Vertical dual inlet and outlet centrifugal pump |
| CN101624992A (en) * | 2009-02-17 | 2010-01-13 | 浙江大学 | Vertical centrifugal pump of hydraulic driven type |
| CN201884286U (en) * | 2010-12-20 | 2011-06-29 | 黄工机械集团有限公司 | Single-stage double-suction double-outlet deep-well pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3011865A1 (en) * | 1980-03-27 | 1981-10-01 | Klein, Schanzlin & Becker Ag, 6710 Frankenthal | SUCTION LEVEL FOR A VERTICALLY SET CONDENSATE PUMP |
| CN2285839Y (en) * | 1996-03-20 | 1998-07-08 | 刘向东 | Dual-volute double-outlet connection pipe built-in electric submersible pump |
| CN2340952Y (en) * | 1998-09-16 | 1999-09-29 | 方松泉 | Vertical dual inlet and outlet centrifugal pump |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966599A (en) * | 2012-11-07 | 2013-03-13 | 无锡惠山泵业有限公司 | Water pump equipment |
| CN104121205A (en) * | 2014-06-27 | 2014-10-29 | 肖琼 | Submersible slurry pump |
| CN105697381A (en) * | 2014-11-28 | 2016-06-22 | 上海凯士比泵有限公司 | Vertical dynamic suspension pump |
| CN108626130A (en) * | 2018-03-01 | 2018-10-09 | 江苏大学 | A kind of high-temperature melting salt pump of the double outlet double volute pump bodies of band |
| CN112412807A (en) * | 2019-08-20 | 2021-02-26 | 上海连成（集团）有限公司 | Double-suction volute core-pulling type long-shaft pump |
| CN112412807B (en) * | 2019-08-20 | 2024-05-07 | 上海连成（集团）有限公司 | Double-suction volute core-pulling type long-axis pump |
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Application publication date: 20120704 |