CN205977697U - Chemical pump is supported at modified two -stage, chopped -off head double suction, radial subdivision, both ends - Google Patents
Chemical pump is supported at modified two -stage, chopped -off head double suction, radial subdivision, both ends Download PDFInfo
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- CN205977697U CN205977697U CN201620487637.2U CN201620487637U CN205977697U CN 205977697 U CN205977697 U CN 205977697U CN 201620487637 U CN201620487637 U CN 201620487637U CN 205977697 U CN205977697 U CN 205977697U
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Abstract
The utility model belongs to the technical field of the fluid conveyor tool, concretely relates to chemical pump is supported at modified two -stage, chopped -off head double suction, radial subdivision, both ends. The improvement of this pump does, 1. Configuration heat dissipation muscle on the bearing box outer wall of the non - driveing end bearing body and the driveing end bearing body, 2. At the epitaxial epaxial installation fan of bearing body, 3. The bottom of the oil bath on the bearing box sets up confined cooling chamber, the cooling external cooling circulation system in chamber. The utility model discloses the structure is more reasonable compact, and the cooling effect is better, and the operation reliability is higher, and the commonality is stronger.
Description
Technical field
This utility model belongs to fluid conveying machine technical field and in particular to two-stage, first-stage double-absorption, radial direction subdivision, two
End supports chemical pump, for oil plant Crude Oil Transportation, petrochemical industry, natural gas, Coal Chemical Industry, synthetic fuel, ocean platform, oil transportation
The fields such as pipeline, high-pressure feed water, power plant, conveying is various to be cleaned or containing medium that is micro granule, neutral or having severe corrosive,
Including acidic liquid, propane, lighter hydrocarbons, high temperature corrosion medium, crude oil etc..
Background technology
Traditional at present two-stage, first-stage double-absorption, radial direction subdivision, two ends support centrifugal pump to be primarily present problems with：
1. bearing body only has one kind indirectly type of cooling, and that is, the cooling intracavity on bearing gland leads to cooling water cooling, this
The type of cooling can not directly cool down the lubricating oil of grease chamber, and cooling effect is poor, there is bearing temperature height, and operating is insecure to ask
Topic.If in the area difficult with water, being water-cooled and necessarily increase production cost.
2. it is provided with hollow cooling chamber in bearing gland and pump cover, lead to axial dimension to lengthen, rotor part amount of deflection increases,
Operating reliability reduces.And mostly this kind of pump is conveying high-temperature medium（More than 300 DEG C）If the cooling that pump cover cools down intracavity is situated between
Matter temperature ratio is relatively low, then pumped (conveying) medium and the big pump cover of the cooling medium temperature difference easily cracking phenomenon, and pump group reliability reduces, such as
The coolant temperature of fruit cooling intracavity is higher, then pumped (conveying) medium and the cooling medium temperature difference are little, and cooling effect is inconspicuous.With section
Skill progress, the range of application of mechanical seal constantly expands, the temperature of machine sealing chamber can be reduced in the presence of heat exchanger it is ensured that
Under worst hot case, sealing is safe and reliable, therefore can cancel the cooling chamber of pump cover.
3. pump-type is corresponding only has one group of impeller it is impossible to meet the low net positive suction head of client or high net positive suction head is efficient
The requirement of different operating modes, part universality is not high, increases management cost.
4. secondary impeller is also double suction, does not only result in axial dimension and lengthens（Rotor run stability reduces, and is not easy to tear open
Dress）, and increased casting difficulty, increase production cost.Secondary impeller and axle coordinate for straight hole, are not easy to dismount.
Therefore, for above four problems, structure improvement should be carried out on the basis of original pump configuration.
Content of the invention
The purpose of this utility model is to provide a kind of improved two-stage, first-stage double-absorption, radial direction subdivision, two ends to support chemical industry
Pump, its more reasonable structure is compact, and more preferably, operating reliability is higher, and versatility is higher for cooling effect.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions.
1. radiating ribs are configured on the bearing box outer wall of non-driven-end bearing body and drive end bearing body；2. external in bearing
Fan is installed on the axle prolonging；3. the cooling chamber of the oil sump bottom setting closing on bearing housing, the external cooling recirculation system of cooling chamber.
This utility model also includes technical scheme below.
Splash ring, the perseverance that the configuration of oil sump position is mated with splash ring liquid level are installed on the axle of the position of bearings in bearing housing
Position lubricating cup；Connect hole in the setting oil foglubrication of bearing upper box part, configure fog-spray nozzle.
Bearing gland and pump cover are solid, and the first stage impeller fitted position of same specification pump is identical, and first stage impeller is axially
Positioning adopts straight hole gap to coordinate using subdivision ring and subdivision ring fixed cover positioning, first stage impeller and axle, and secondary impeller is single suction
Impeller, increases balance pipe between the chopped-off head of the pump housing and secondary, and secondary impeller axially position adopts locking swivel nut to position, secondary leaf
Wheel and axle adopt taper hole gap to coordinate, and increasing between chopped-off head and secondary has balance pipe；Pump cover and the pump housing adopt wound gasket to seal；
Axle and shaft coupling adopt taper hole to coordinate.
Outside fan and inner side fan are respectively mounted on bearing housing two side axle of non-driven-end bearing body, outside fan is joined
It is equipped with fan guard；Fan inside installing on the bearing housing inner shafts of drive end bearing body.
Two kinds of lubricating systems and three kinds of methods for cooling share a bearing body, and lubricating oil adopts bearing isolator to seal.Can
Require to adopt different coolings and lubricating system according to different operating modes and user.Guarantee that bearing operation can by above-mentioned several measures
Lean on, improve the versatility of part.
After cancelling bearing gland cooling chamber and pump cover cooling chamber, axial length can be reduced, rotor part is flexible to be reduced, rigidity
Increasing operating reliability increases.Cancel bearing gland cooling chamber, the reliability guaranteeing bearing in manner just described is adopted in the cooling of bearing
Run.After cancelling pump cover cooling chamber, the cooling of machine sealing chamber is ensured by Mechanical Seal Auxiliary System heat exchanger heat exchange, by interior
Crosswind fans cold pump cover and machine envelope, and medium heat can be stoped to be transferred to bearing end.
The impeller fitted position of same specification pump difference waterpower group is identical, can by changing the first stage impeller of different performance
Meet low net positive suction head or high net positive suction head efficient difference operating mode.
Secondary impeller is changed to the span between two bearings after single suction and reduces, and improves rotor stability, pump housing axial dimension subtracts
Little, flow passage structure is relatively simple, reduces casting difficulty.
The beneficial effects of the utility model are：Support centrifugal pump with traditional two-stage, first-stage double-absorption, radial direction subdivision, two ends
Compare, when conveying different temperatures medium, bearing adopts different methods for cooling：Air cooling, air-cooled, water-cooled.Bearing is using lubrication
Mode：Splash, mist of oil forced feed lubrication.Can be reached using the different bearing types of cooling and lubricating system according to different operating modes
Reliability and the optimum balance of economy.Cancel bearing gland and pump cover cooling chamber, reduce axial length, increased the firm of rotor
Property, improve rotor-support-foundation system maintainability.The first stage impeller of removable difference waterpower group meets low net positive suction head or height
Net positive suction head efficient difference operating mode, increased the versatility of part, reduces management cost.Secondary double-entry impeller is changed to
Single-suction (single-in let) impeller, not only subtracts trochantinian axial dimension, reduces the amount of deflection of rotor, improves rotor run stability, and reduces
The pump housing casts difficulty, reduces production cost.
Brief description
With enforcement, this utility model is further described below in conjunction with the accompanying drawings.
Fig. 1 is main structure diagram of the present utility model.
Fig. 2 is side structure schematic view of the present utility model.
In figure：1st, fan guard；2nd, outside fan；3rd, bearing isolator；4th, non-driven-end bearing lid；5th, splash ring；6th, non-
Drive end bearing body；7th, bearing isolator；8th, mechanical seal；9th, anti-drive end nockbush；10th, anti-drive end pump cover；11st, pump
Body；12nd, first stage impeller sealing ring；13rd, subdivision ring；14th, first stage impeller；15th, middle axle sleeve；16th, balance pipe；17th, secondary impeller
Import sealing ring；18th, secondary impeller；19th, secondary impeller hub seal ring；20th, drive end pump cover；21st, drive end nockbush；
22nd, drive end bearing adjusting sleeve；23rd, drive end bearing body；24th, drive end bearing lid；25th, bearing isolator；26th, axle；27th, water
Cold chamber gland；28th, drive end spilled oil ring set；29th, deep groove ball bearing；30th, bearing isolator；31st, inner side fan；32nd, locking screw
Set；33rd, secondary impeller casing wear ring；34th, secondary impeller casing ring；35th, interstage bushing；36th, the first stage impeller pump housing is close
Seal ring；37th, subdivision ring fixed cover；38th, non-driven-end bearing adjusting sleeve；39th, angular contact ball bearing；40th, anti-drive end splash ring
Set；41st, regard oily window；42nd, permanent position lubricating cup；43rd, oil foglubrication connects hole；44th, oil sump；45th, cooling chamber；46th, cooling water inlet；47、
Radiating ribs；48th, coolant outlet.
Specific embodiment
As shown in Figure 1, 2, of the present utility model it is improved to：
1. air cooling：The bearing housing outer circumference of non-driven-end bearing body 6 and drive end bearing body 23 has installed a series of dissipating additional
Hot muscle 47 radiating is carried out.
2. air-cooled：Increase on the interior outboard shafts 26 of the bearing housing of non-driven-end bearing body 6 and drive end bearing body 23 and install
Outside fan 2 and inner side fan 31, medial and lateral fan is fixed on 26 axles, rotates with axle, can well to non-driven
The bearing housing of end bearing body 6 and drive end bearing body 23 carries out air-cooled.
3. water-cooled：The oil sump 44 of the bearing housing of non-driven-end bearing body 6 and drive end bearing body 23 has been additionally arranged at the bottom of independence
Closing cooling chamber 45, by external cooling medium circulation system, in cooling chamber 45 through-flow dynamic cooling medium can force cold
But the lubricating oil in oil sump 44.
Bearing lubrication mode of the present utility model is two kinds：1. splash.By the splash ring 5 being immersed in oil sump 44
Splash, permanent position lubricating cup 42 repairing, keeps suitable liquid level simultaneously.2. mist of oil forced feed lubrication.The spraying profit of bearing upper box part
The external pressurization forcedlubricating system in sliding hole 43, can be well to bearing oil foglubrication.
Two kinds of lubricating systems and three kinds of methods for cooling share a bearing body, and lubricating oil adopts bearing isolator 3,7,30 close
Envelope.Can require to adopt different coolings and lubricating system according to different operating modes and user.Guarantee bearing by above-mentioned several measures
Operating is reliable, improves the versatility of part.
Eliminate hollow bearing gland cooling chamber and the pump cover cooling chamber of routine, reduce axial length, rotor part is scratched
Property reduce, rigidity increase operating reliability increase.Equally can ensure that the reliability service of bearing using the means in such scheme, take
Disappear after drive end pump cover cooling chamber and anti-drive end pump cover cooling chamber, the cooling of machine sealing chamber can be changed by Mechanical Seal Auxiliary System
Hot device heat exchange, to ensure, by the cold pump cover of inner side fan 31 and machine envelope, stops medium heat from being transferred to bearing end.
The impeller fitted position of same specification pump difference waterpower group is identical, and the first stage impeller 14 by replacing different performance is full
The low net positive suction head of foot or high net positive suction head efficient difference operating mode.
Secondary impeller 18 is changed to single-suction by conventional double-suction type.Two impellers are unsymmetrical arrangement, lead to axial force
Increase, increase balance pipe 16, balancing axial thrust between the chopped-off head of the pump housing 11 and secondary for this.After structural change, axial dimension subtracts
Little, the casting difficulty of the pump housing reduces.
Claims (3)
1. a kind of improved two-stage, first-stage double-absorption, radial direction subdivision, two ends support chemical pump, 1. in non-driven-end bearing body and drive
Radiating ribs are configured on the bearing box outer wall of moved end bearing body；2. fan is installed on the axle of bearing body extension；It is characterized in that：Bearing
The cooling chamber of the oil sump bottom setting closing on case, the external cooling recirculation system of cooling chamber；Position of bearings in bearing housing
Splash ring, the permanent position lubricating cup that the configuration of oil sump position is mated with splash ring liquid level are installed on axle；In bearing upper box part setting spraying profit
Sliding hole, configures fog-spray nozzle.
2. the improved two-stage as described in claim 1, first-stage double-absorption, radial direction subdivision, two ends support chemical pump, it is characterized in that：
Bearing gland and pump cover are solid, and the first stage impeller fitted position of same specification pump is identical, and first stage impeller axially position adopts
Subdivision ring and subdivision ring fixed cover positioning, first stage impeller and axle adopt straight hole gap to coordinate, and secondary impeller is single-suction (single-in let) impeller, in pump
Increase balance pipe, secondary impeller axially position adopts locking swivel nut to position, and secondary impeller is adopted with axle between the chopped-off head of body and secondary
With the cooperation of taper hole gap, increasing between chopped-off head and secondary has balance pipe；Pump cover and the pump housing adopt wound gasket to seal；Axle and shaft coupling
Device adopts taper hole to coordinate.
3. the improved two-stage as described in claim 2, first-stage double-absorption, radial direction subdivision, two ends support chemical pump, it is characterized in that：
Outside fan and inner side fan are respectively mounted on bearing housing two side axle of non-driven-end bearing body, outside fan arrangement has fan
Cover；Fan inside installing on the bearing housing inner shafts of drive end bearing body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620487637.2U CN205977697U (en) | 2016-05-26 | 2016-05-26 | Chemical pump is supported at modified two -stage, chopped -off head double suction, radial subdivision, both ends |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620487637.2U CN205977697U (en) | 2016-05-26 | 2016-05-26 | Chemical pump is supported at modified two -stage, chopped -off head double suction, radial subdivision, both ends |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205977697U true CN205977697U (en) | 2017-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620487637.2U Active CN205977697U (en) | 2016-05-26 | 2016-05-26 | Chemical pump is supported at modified two -stage, chopped -off head double suction, radial subdivision, both ends |
Country Status (1)
| Country | Link |
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| CN (1) | CN205977697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688070A (en) * | 2022-02-17 | 2022-07-01 | 上海凯泉泵业（集团）有限公司 | Air-cooled self-lubricating bearing component and method of using same |
-
2016
- 2016-05-26 CN CN201620487637.2U patent/CN205977697U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688070A (en) * | 2022-02-17 | 2022-07-01 | 上海凯泉泵业（集团）有限公司 | Air-cooled self-lubricating bearing component and method of using same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |