CN206111568U - Energy -saving balancing unit of multistage centrifugal water pump - Google Patents
Energy -saving balancing unit of multistage centrifugal water pump Download PDFInfo
- Publication number
- CN206111568U CN206111568U CN201620891158.7U CN201620891158U CN206111568U CN 206111568 U CN206111568 U CN 206111568U CN 201620891158 U CN201620891158 U CN 201620891158U CN 206111568 U CN206111568 U CN 206111568U
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- Prior art keywords
- water pump
- balance
- mechanically
- balancing
- sealing apparatus
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Abstract
The utility model discloses an energy -saving balancing unit of multistage centrifugal water pump, including main shaft, delivery port and equilibrium water export, the rigid coupling has last -stage impeller on the main shaft, balancing sleeve and balancing disk are cup jointed to the main shaft outside, the balancing sleeve is according to the difference of external diameter, and from big to small divide into bottom, middle -end and top in proper order, the top of balancing sleeve is stretched into in the balancing disk. The energy -saving balancing unit of multistage centrifugal water pump of this structure when water pump activation, the rotation of can laminating in step of balancing disk and balance plate to the wearing and tearing between balancing disk and the balance plate have been stopped. Simultaneously since in the start -up course balancing disk do not produce high pressure contact and high -speed rotation with the balance plate to the pick -up current has effectively been reduced. The utility model discloses simple structure, design are ingenious, have effectually reduced the working loss, have prolonged life.
Description
Technical field
This utility model is related to field of electromechanical equipment, more particularly, in mine shaft building engineering drainage underground it is multistage from
The energy-saving bascule of heart pump.
Background technology
Multi-stage centrifugal pump forms pressure differential due to the low hydraulic pressure of the high hydraulic pressure and water inlet end of water side on startup, makes water
Pump rotor produces the axial force to water inlet end, in order to balance this axial force, it is ensured that water pump normally starts, and centrifugal multistage pump multiple centrifugal pump is in water outlet
End is configured with a set of bascule, and a part of water under high pressure is exactly decompressed to flat by its equilibrium principle in high pressure water side by damping
Gap of the weighing apparatus between room, then the balancing frame and balance plate by balance cylinder is flowed out, and the water pressure of outflow is close to atmospheric pressure.During startup
Balancing frame on water pump rotor is close to relatively high speed rotation on balance plate to water inlet side shifting, forms a closed balance
Room produces high hydraulic pressure, and balance outdoor is normal pressure, material is thus formed a reverse pressure differential, makes water pump rotor produce direction and goes out
The axial force of water side, when the axial force towards water outlet side is more than axial force towards influent side, balancing frame is separated with balance plate,
Rotor is entered in dynamic equilibrium, and starting mode of pump process terminates, and this process is typically between 3 ~ 7 seconds.
This bascule is used till today as the standard configuration of centrifugal multistage pump multiple centrifugal pump, but finds there is following asking in use
Topic：One be start every time balancing frame will with balance plate hight press contacts and relatively high speed rotation, cause balancing frame and balance plate because
Serious wear premature failure, especially uses pump under the environment for needing frequent starting and water quality not so good, weares and teares more serious,
Pit shaft draining during shaft building will be changed once for one day sometimes；Two is balancing frame and balance plate hight crimping in start-up course
Touch, rotate at a high speed, the resistance of start causes greatly starting current big, and 3～5 times of rated current is still reached after reduced-voltage starting.
Utility model content
The purpose of this utility model is that to solve balancing frame and balance plate premature abrasion and starting current in prior art excessive
Problem, there is provided a kind of energy-saving bascule of multi-stage centrifugal pump, so that it is guaranteed that balancing frame and balance plate do not have fretting wear
And reduce starting current.
The technical solution adopted in the utility model is：A kind of energy-saving bascule of multi-stage centrifugal pump, including main shaft, go out
The mouth of a river and equilibrium water outlet, are connected with impeller on the main shaft, balance set and balancing frame are socketed on the outside of the main shaft, described
Balance set is divided into bottom, middle-end and top from big to small according to the difference of external diameter, and balance is stretched on the top of the balance set
In disk；
Balance plate is provided between the balancing frame and balance set, be provided between the balance plate and balance set two bearings and
First mechanically-sealing apparatus, described two bearings are respectively positioned at the bottom of balance set and middle-end, first mechanically-sealing apparatus
Positioned at the top of balance set；The seat ring of the second mechanically-sealing apparatus is provided with the outside of the water side of centrifugal water pump, the seat ring passes through
Bolt is connected with the water side of centrifugal water pump, and the second mechanically-sealing apparatus are provided between the seat ring and balance plate；
When the pressure of centrifugal water pump is between 2MPA～3MPA, the material of the rotating ring of first mechanically-sealing apparatus is
Graphite, the material of stationary ring is carborundum；When the pressure of centrifugal water pump is between 3MPA～4MPA, the first mechanical seal dress
The material of the rotating ring put is carborundum, and the material of stationary ring is Integral alloy；When the pressure of centrifugal water pump is more than 4MPA, described the
The material of the rotating ring and stationary ring of one mechanically-sealing apparatus is all Integral alloy.
As further improvement of the utility model, when the pressure of centrifugal water pump is more than 5MPA, the first mechanical seal dress
Spring in putting need to increase elastic force.
Further improve as of the present utility model, one, the bearing is plane bearing, and another is journal bearing,
The plane bearing is located at the bottom of balance set, and the journal bearing is located at the middle-end of balance set.
This utility model adopt beneficial effect be：The energy-saving bascule of multi-stage centrifugal pump of this structure is opened in water pump
When dynamic, balancing frame and balance plate synchronously can be fitted rotation, so as to prevent the abrasion between balancing frame and balance plate.While by
In start-up course, balancing frame and balance plate do not produce high pressure contact and rotate at a high speed, so as to effectively reduce starting current.This
Utility model simple structure, it is skillfully constructed, effectively reduces working loss, extend service life.
Description of the drawings
Fig. 1 is existing bascule schematic diagram.
Fig. 2 is this utility model schematic diagram.
Shown in figure：1 main shaft, 2 balance sets, 3 balance plates, 4 balancing frames, 5 impellers, 6 outlets, 7 balances
Water out, 8 first mechanically-sealing apparatus, 9 second mechanically-sealing apparatus, 10 bearings, 11 seat rings.
Specific embodiment
With reference to Fig. 2, this utility model is described further.
As shown in Fig. 2 a kind of energy-saving bascule of multi-stage centrifugal pump, including main shaft 1, outlet 6 and equilibrium water go out
Mouth 7, is connected with impeller 5 on the main shaft 1, balance set 2 and balancing frame 4, the balance set 2 are socketed on the outside of the main shaft 1
According to the difference of external diameter, bottom, middle-end and top are divided into from big to small, balancing frame 4 is stretched on the top of the balance set 2
It is interior；
Balance plate 3 is provided between the balancing frame 4 and balance set 2, two between the balance plate 3 and balance set 2, are provided with
Bearing 10 and the first mechanically-sealing apparatus 8, described two bearings are respectively positioned at the bottom of balance set 2 and middle-end, first machine
Tool sealing device 8 is located at the top of balance set 2；Balance gear is additionally provided with the cavity that the back segment of centrifugal water pump and cover of balancing chamber are constituted
Set 11, the balance interstage sleeve 11 are connected with the back segment of centrifugal water pump by bolt, are set between the balance interstage sleeve 11 and balance plate 3
There are the second mechanically-sealing apparatus 8；
Balance plate 3 is provided between the balancing frame 4 and balance set 2, two between the balance plate 3 and balance set 2, are provided with
Bearing 10 and the first mechanically-sealing apparatus 8, described two bearings are respectively positioned at the bottom of balance set 2 and middle-end, first machine
Tool sealing device 8 is located at the top of balance set 2；The seat ring of the second mechanically-sealing apparatus is provided with the outside of the water side of centrifugal water pump
11, the seat ring 11 is connected with the water side of centrifugal water pump by bolt, and the second machine is provided between the seat ring 11 and balance plate 3
Tool sealing device 9；
When the pressure of centrifugal water pump is between 2MPA～3MPA, the material of the rotating ring of first mechanically-sealing apparatus is
Graphite, the material of stationary ring is carborundum；When the pressure of centrifugal water pump is between 3MPA～4MPA, the first mechanical seal dress
The material of the rotating ring put is carborundum, and the material of stationary ring is Integral alloy；When the pressure of centrifugal water pump is more than 4MPA, described the
The material of the rotating ring and stationary ring of one mechanically-sealing apparatus is all Integral alloy.
Balance set is divided into three sections according to the difference of external diameter, and middle-end and bottom are provided with bearing, and it is close that top is provided with the first machinery
Seal apparatus, so as to effective fixing bearing and the first mechanically-sealing apparatus, improve working effect.Seat ring 11 and the second mechanical seal
The bottom of balancing frame and balance plate is further integrated into an entirety by coordinating for device, it is ensured that connection is seamless.
The parameters such as the lift designed depending on water pump of the present utility model, flow, power, rotating speed, corresponding is lift
Size determine mechanical seal stress levels；The size of flow and power determines the overall dimensions of each part of bascule；Turn
The size of speed determines the accuracy class of mechanical seal and bearing.As pump motor is all two grades of motors, rotating speed generally is
2960 revs/min；The overall dimensions of bascule are limited by the size of flow and power, but these using the size of former pump do according to
According to；Unique change is lift, and different lifts can affect the first mechanically-sealing apparatus of the present utility model, and its stress levels can not
Together, but balance plate external diameter the second mechanically-sealing apparatus stress levels it is unaffected, therefore the device design typification major part is
By the dimensional parameters of former pump, only the first mechanically-sealing apparatus can be different according to lift difference stress levels meeting, corresponding to mark
Standard is：200 meters of correspondences of lift are pressure to be not less than 2 MPas；300 meters of correspondences of lift are pressure to be not less than 3 MPas；400 meters of lift is corresponding
Not less than 4 MPas.
By repeatedly long-term experiment, to guarantee the good contact of balancing frame and balance plate with sealing, it is ensured that multistage centrifugal
Water pump can use this bascule in the case of different lifts, flow, power and rotating speed, while ensureing that this balance is filled
The normal work put.For the difference of the working environment of centrifugal water pump, cause the difference of its pressure, and select different mechanical close
Seal apparatus, so as to ensure the normal work of mechanically-sealing apparatus.On the basis of processing difficulty and production cost is considered, carry out
Following scheme：When between the pressure 2MPA～3MPA of centrifugal water pump, first mechanically-sealing apparatus and the second mechanical seal
The material of the rotating ring of device is graphite, and the material of stationary ring is carborundum；When the pressure of centrifugal water pump is between 3MPA～4MPA,
The material of the rotating ring of first mechanically-sealing apparatus and the second mechanically-sealing apparatus is carborundum, and the material of stationary ring is overall conjunction
Gold；When centrifugal water pump pressure be more than 4MPA when, the rotating ring of first mechanically-sealing apparatus and the second mechanically-sealing apparatus and
The material of stationary ring is all Integral alloy.
Further to improve use range of the present utility model, more complicated working environment is adapted to, when centrifugal water pump
When pressure is more than 5MPA, the spring in first mechanically-sealing apparatus is replaced by the spring with bigger elasticity, by increasing
The elastic force of spring is guaranteeing the normal work of mechanically-sealing apparatus.
Further to improve work efficiency of the present utility model, it is ensured that the sealing between balancing frame and balance plate, balance plate
Work and balance set between, one, the bearing is plane bearing, and another is journal bearing, and the plane bearing is located at flat
The bottom of weighing apparatus set, the journal bearing are located at the middle-end of balance set.
, in starting mode of pump, balancing frame and balance plate can be synchronous for the energy-saving bascule of multi-stage centrifugal pump of this structure
Laminating rotation, so as to prevent the abrasion between balancing frame and balance plate.Simultaneously because balancing frame and balance plate in start-up course
Do not produce high pressure contact and rotate at a high speed, so as to effectively reduce starting current.This utility model simple structure, it is skillfully constructed,
Working loss is effectively reduced, service life is extended.
Embodiment 1 is chosen below, and this utility model is further explained.
Embodiment 1：
1st, centrifugal multistage pump multiple centrifugal pump MD46-50 × 8 are selected first as object of study, according to its technical parameter, including raising
The element size of journey, flow, power, rotating speed etc. and former pump as new bascule design considerationss, through Theoretical Calculation,
New bascule figure and part manuscript are designed in type selecting and check, determine the model specification of bearing and mechanical seal；
2nd, after the completion of drawing, carry out the processing of part；
3rd, carry out the assembling of new bascule, it is normal after carry out the assembling of the pump housing with new bascule again；
4th, the unloaded debugging of MD46-50 × 8 water pump with new bascule is carried out in earth's surface：Be ready to water tank, power supply,
Start compensating cabinet, pressure gauge, gate valve etc., water pump and pipeline, power supply are installed, closing gate valve, start rear motor electric current most
Greatly 430A, after 3 ~ 5 seconds, electric current is down to no-load current 60A or so, and meter pressure is 4.1Mpa.Contrast the old bascule water
The maximum starting current of pump have dropped 170A and normally can start, and earth's surface no-load test is successful.
5th, down-hole pump house is moved on to, makees long-time discontinuously drainage test.Down-hole water quality is poor, between clear water and sewage,
Started once every 3 hours, pump is stamped into earth's surface disintegration, balancing frame peace after the interrupted draining for 5 days about 40 times startups
Weighing apparatus plate does not wear and tear, and the vestige that its surface only High-Pressure Water is washed away is tested successful.
" top " in this utility model " in " term position such as " bottom ", it is intended merely to technical scheme be better described and quotes
, it is not the restriction to the technical solution of the utility model.
Those skilled in the art may be used also it is to be understood that protection scheme of the present utility model is not limited only to the above embodiments
So that various permutation and combination and conversion are carried out on the basis of above-described embodiment, on the premise of without prejudice to this utility model spirit,
The various conversion that this utility model is carried out are all fallen within protection domain of the present utility model.
Claims (3)
1. a kind of energy-saving bascule of multi-stage centrifugal pump, including main shaft（1）, outlet（6）Export with equilibrium water（7）, institute
State main shaft（1）On be connected with impeller（5）, it is characterized in that the main shaft（1）Outside socket balance set（2）And balancing frame（4）,
The balance set（2）According to the difference of external diameter, bottom, middle-end and top, the balance set are divided into from big to small（2）Top
Stretch into balancing frame in end（4）It is interior；
The balancing frame（4）And balance set（2）Between be provided with balance plate（3）, the balance plate（3）And balance set（2）Between set
There are two bearings（10）With the first mechanically-sealing apparatus（8）, described two bearings are respectively positioned at balance set（2）Bottom and in
End, first mechanically-sealing apparatus（8）Positioned at balance set（2）Top；The second machine is provided with the outside of the water side of centrifugal water pump
The seat ring of tool sealing device（11）, the seat ring（11）It is connected with the water side of centrifugal water pump by bolt, the seat ring（11）
And balance plate（3）Between be provided with the second mechanically-sealing apparatus（9）；
When the pressure of centrifugal water pump is between 2MPA～3MPA, the material of the rotating ring of first mechanically-sealing apparatus is stone
Ink, the material of stationary ring is carborundum；When the pressure of centrifugal water pump is between 3MPA～4MPA, first mechanically-sealing apparatus
The material of rotating ring be carborundum, the material of stationary ring is Integral alloy；When the pressure of centrifugal water pump is more than 4MPA, described first
The material of the rotating ring and stationary ring of mechanically-sealing apparatus is all Integral alloy.
2. a kind of energy-saving bascule of multi-stage centrifugal pump according to claim 1, is characterized in that when centrifugal water pump
When pressure is more than 5MPA, the spring in the first mechanically-sealing apparatus need to increase elastic force.
3. a kind of energy-saving bascule of multi-stage centrifugal pump according to claim 1 and 2, is characterized in that the bearing one
Individual another is journal bearing for plane bearing, and the plane bearing is located at the bottom of balance set, and the journal bearing is located at flat
The middle-end of weighing apparatus set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620891158.7U CN206111568U (en) | 2016-08-17 | 2016-08-17 | Energy -saving balancing unit of multistage centrifugal water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620891158.7U CN206111568U (en) | 2016-08-17 | 2016-08-17 | Energy -saving balancing unit of multistage centrifugal water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206111568U true CN206111568U (en) | 2017-04-19 |
Family
ID=58512506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620891158.7U Withdrawn - After Issue CN206111568U (en) | 2016-08-17 | 2016-08-17 | Energy -saving balancing unit of multistage centrifugal water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206111568U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151051A (en) * | 2016-08-17 | 2016-11-23 | 铜陵有色金属集团铜冠矿山建设股份有限公司 | A kind of energy-saving bascule of multi-stage centrifugal pump |
-
2016
- 2016-08-17 CN CN201620891158.7U patent/CN206111568U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151051A (en) * | 2016-08-17 | 2016-11-23 | 铜陵有色金属集团铜冠矿山建设股份有限公司 | A kind of energy-saving bascule of multi-stage centrifugal pump |
| CN106151051B (en) * | 2016-08-17 | 2019-04-23 | 铜陵有色金属集团铜冠矿山建设股份有限公司 | A kind of energy-saving balancing device of multi-stage centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170419 Effective date of abandoning: 20190423 |