CN207485737U - For the fore pump of fired power generating unit - Google Patents
For the fore pump of fired power generating unit Download PDFInfo
- Publication number
- CN207485737U CN207485737U CN201721234470.XU CN201721234470U CN207485737U CN 207485737 U CN207485737 U CN 207485737U CN 201721234470 U CN201721234470 U CN 201721234470U CN 207485737 U CN207485737 U CN 207485737U
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- China
- Prior art keywords
- free end
- pump
- bearing
- shaft
- driving
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- Expired - Fee Related
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Abstract
The utility model is related to a kind of fore pumps for fired power generating unit, it includes the pump housing, pump cover, pump shaft, pump shaft passes through the pump housing, pump cover, impeller and axle sleeve are housed on pump shaft, the both ends of pump shaft are respectively equipped with drive end axle bearing assembly and free end shaft bearing assembly, the pump cover includes driving end pump cover and free end pump cover, driving end pump cover is attached separately to free end pump cover in the endoporus of pump housing both sides, driving end pump cover is connected with driving end sealed letter body, driving end sealed letter body is connect with driving end mechanical sealing assembly, free end pump cover is connected with free end sealed letter body, free end sealed letter body is connect with free end mechanical sealing assembly, drive end pump cover, driving end sealed letter body is connected with the drive end bearing body of drive end axle bearing assembly, free end pump cover, free end sealed letter body is connected with the free end bearing body of free end shaft bearing assembly.The utility model is stable, and sealing effect is good.
Description
Technical field
The utility model is related to a kind of fore pump, more particularly to a kind of fore pump for fired power generating unit.
Background technology
At present fired power generating unit fore pump there are the problem of：1）Pump work is unstable, easy vibration；2）It is deposited at seal with O ring
It is leaking；3）Mechanical seal is sealed for non-packaging, and outer backwashing manner, dynamic and static ring is easily burst；4）Journal bearing uses sliding bearing,
Thrust bearing uses rolling bearing, complicated；5）Flow passage components anti-cavitation energy force difference, part function failure.
Utility model content
The utility model for the above-mentioned prior art the problem of, provide a kind of preposition for fired power generating unit
The problem of pump, solves fluctuation of service in the prior art, and sealing effect is undesirable.
The technical solution of the utility model is as follows：
For the fore pump of fired power generating unit, including the pump housing, pump cover, pump shaft, pump shaft passes through the pump housing, pump cover, is equipped on pump shaft
Impeller and axle sleeve, the both ends of pump shaft are respectively equipped with drive end axle bearing assembly and free end shaft bearing assembly, and the pump cover includes driving
Moved end pump cover and free end pump cover, driving end pump cover are attached separately to free end pump cover in the endoporus of pump housing both sides, drive end pump cover
Driving end sealed letter body is connected with, driving end sealed letter body is connect with driving end mechanical sealing assembly, and free end pump cover is connected with
Free end sealed letter body, free end sealed letter body are connect with free end mechanical sealing assembly, driving end pump cover, driving end sealed letter
Body is connected with the drive end bearing body of drive end axle bearing assembly, free end pump cover, free end sealed letter body and free end bearing group
The free end bearing body of part is connected.
The drive end axle bearing assembly includes drive end bearing body, drive end axle pressure cap I, drive end axle pressure cap
II, driving end dust pan, deep groove ball bearing, driving end disc and driving end oil ring set；Deep groove ball bearing hot charging on pump shaft,
Deep groove ball bearing outer ring is connected with transition cooperation in hole in drive end bearing body, and drive end bearing body connects drive end axle pressure-bearing respectively
I and drive end axle pressure cap II is covered, setting driving end disc between deep groove ball bearing and pump shaft, driving end disc suit drives
Moved end oil ring is put on；Driving end dust pan is respectively equipped between drive end axle pressure cap I and drive end axle pressure cap II and pump shaft.
The drive end bearing body is cast with cooling fin.
The free end shaft bearing assembly includes free end bearing body, free end shaft pressure cap I, free end shaft pressure cap
II, free end dust pan, angular contact ball bearing, bearing regulation ring, free end disc and free end oil ring set；Angular contact ball axis
Hot charging is held on pump shaft, angular contact ball bearing outer ring is connected with transition cooperation in hole in the bearing body of free end, free end bearing body point
Not Lian Jie free end shaft pressure cap I and free end shaft pressure cap II, between angular contact ball bearing and pump shaft set free end get rid of oil
Ring, free end disc suit free end oil ring are put on, and free end dust pan is equipped between free end shaft pressure cap II and pump shaft；
The angular contact ball bearing is connected with bearing regulation ring.
The free end bearing body is cast with cooling fin.
The driving end mechanical sealing assembly is mounted on driving end sealed letter body, the installation of free end mechanical sealing assembly
On the sealed letter body of free end, it is integrated mechanical sealing to drive end mechanical sealing assembly and free end mechanical sealing assembly,
Driving end integrated mechanical sealing and free end integrated mechanical sealing backwashing manner, external cooling water leads to using external cooling water
It crosses mechanical seal cover screw hole flushing dynamic and static ring and reaches cooling purpose.
The driving end sealed letter body forms driving end cooling cavities with the pump housing, driving end pump cover；The free end
Sealed letter body forms free end cooling cavities with the pump housing, free end pump cover.
The pump housing uses single-stage double-suction spiral case, symmetrical expression arrangement.
The pump housing at pump cover seam allowance cooperation using wound gasket with being sealed.
The utility model has the advantages of as follows：
1st, single-stage double-suction volute pump eliminates radial load, in structure upper pump casing using double suction spiral case, eliminates radial load, protects
Demonstrate,prove equipment steady running.
2nd, the sealing between the pump housing and pump cover is sealed using wound gasket, and sealed reliable effectively prevent high pressure chest liquid to low pressure
The leakage of chamber.
3rd, pump bearing uses annular bearing with rolling contact, and thrust bearing is using the frame mode of one group of angular contact ball bearing, structure
Simply, complete machine is reliable.
4th, pump shaft both ends axle envelope selects integrated mechanical sealing, and outer circulation backwashing manner can also be used from backwashing manner.It saves
Shi Shengli, it is easy for installation, effectively prevent air entrance or pumped medium exudation.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Specific embodiment
Referring to the drawings, in conjunction with specific embodiments, the utility model is described in detail.
Embodiment
It is single-stage double-suction radially split type central supported centrifugal pump as shown in Figure 1, for the fore pump of fired power generating unit, it is right
Title formula is arranged.Mainly include the pump housing 1, pump cover, pump shaft 5, impeller, sealed letter body, sealing element, axle sleeve, mechanical sealing parts and axis
Body component is held, pump shaft 5 passes through the pump pump housing, pump cover, impeller 6 and axle sleeve 7 is housed on pump shaft, impeller 6 and axle sleeve 7 pass through sleeve nut
8 fix, and the both ends of pump shaft are respectively equipped with drive end axle bearing assembly and free end shaft bearing assembly, and the pump cover includes driving end pump
Lid 2 and free end pump cover 3, driving end pump cover are attached separately to free end pump cover in the endoporus of pump housing both sides, and driving end pump cover 2 connects
There is driving end sealed letter body 26, driving end sealed letter body 26 is connected with driving end mechanical sealing assembly 24, and free end pump cover 3 connects
There is free end sealed letter body 35, free end sealed letter body 35 is connected with free end mechanical sealing assembly 31, and driving end pump cover 2 drives
Moved end sealed letter body 26 and the drive end bearing body 9 of drive end axle bearing assembly are fastened by bracket 25 with bolt, free end pump cover
3rd, free end sealed letter body 35 and the free end bearing body 32 of free end shaft bearing assembly are fastened by bracket 30 with bolt.
The drive end axle bearing assembly includes drive end bearing body 9, drive end axle pressure cap I10, drive end axle pressure-bearing
Cover II11, driving end dust pan 23, deep groove ball bearing 13, driving end disc 14 and driving end oil ring set 15；Deep groove ball bearing
13 hot chargings are on pump shaft 5, and 13 outer ring of deep groove ball bearing is connected with 9 endoporus transition of drive end bearing body cooperation, drive end bearing body 9
Drive end axle pressure cap I and drive end axle pressure cap II is connected respectively, and setting driving end is got rid of between deep groove ball bearing 13 and pump shaft 5
Oil ring 14, driving end disc suit driving end oil ring are covered on 15；Drive end axle pressure cap I and drive end axle pressure cap II and pump
Driving end dust pan 23 is respectively equipped between axis.
The drive end bearing body is cast with cooling fin, realizes air cooling.
The free end shaft bearing assembly includes free end bearing body 32, free end shaft pressure cap I33, free end shaft pressure-bearing
Cover II16, free end dust pan 34, angular contact ball bearing 17, bearing regulation ring 18, free end disc 19 and free end oil ring
Set 20；17 hot charging of angular contact ball bearing on pump shaft 5, with the 32 endoporus transition of free end bearing body match by 17 outer ring of angular contact ball bearing
Close and be connected, free end bearing body connects free end shaft pressure cap I and free end shaft pressure cap II respectively, angular contact ball bearing 17 with
Between pump shaft set free end disc 19, free end disc suit free end oil ring set 20 on, free end shaft pressure cap I with
Free end dust pan 34 is equipped between pump shaft；The angular contact ball bearing is connected with bearing regulation ring 18.
The free end bearing body is cast with cooling fin, realizes air cooling.
The driving end mechanical sealing assembly 24 is mounted on driving end sealed letter body 26, free end mechanical sealing assembly
31 are mounted on free end sealed letter body 35, and it is packaging type machine to drive end mechanical sealing assembly and free end mechanical sealing assembly
Tool seals, and integrated mechanical sealing backwashing manner uses external cooling water, and external cooling water is rushed by mechanical seal cover screw hole
Dynamic and static ring is washed, reaches cooling purpose.
The driving end sealed letter body forms driving end cooling cavities with driving end pump cover 2；The free end sealing
Letter body forms free end cooling cavities with free end pump cover 3；When medium temperature is more than 180 DEG C, it is passed through water 4m3/h, pressure
Reach cooling axle envelope purpose for 1.2MPa cooling waters.
The pump housing effectively prevent dielectric leakage with being sealed at pump cover seam allowance cooperation using wound gasket.The winding
Pad includes wound gasket I36, wound gasket II37, wound gasket III38, wound gasket IV39, wound gasket III38, wound gasket IV39 difference
It is assembled in driving 2 stop portion wound gasket slot of end pump cover, then assembles driving end pump cover 2, the pump housing in place by seam allowance positioning,
Blending bolt effectively prevent dielectric leakage tightly.
Wound gasket I36, wound gasket II37 are respectively assembled in 3 stop portion wound gasket slot of free end pump cover, then will be freely
Hold pump cover 3, the pump housing by seam allowance positioning assembling in place, blending bolt effectively prevent dielectric leakage tightly.
Casing ring 4, casing ring 27 are set in respectively on driving end pump cover 2 and free end pump cover 3, with impeller port ring
Clearance fit is formed, fit clearance is 0.5 mm, prevents high pressure chest medium from being leaked to low pressure chamber.
The rotor of the utility model fore pump is respectively by the deep groove ball bearing 13 and free end bearing in drive end bearing body
Internal angular contact ball bearing 17 supports.Driving 14 He of end disc is respectively adopted in deep groove ball bearing 13 and angular contact ball bearing 17
19 self-lubricating of free end disc.Since component is using being arranged symmetrically, generated axial force is very little to pump in operation, by
Residual axial force caused by pipeline arrangement and foozle, is born, this bearing is set by free end angular contact ball bearing
Meter has enough safety coefficients.
On material selection, the pump housing/pump cover, impeller flow passage components use ZG06Gr13Ni4Mo (CA-6NM) material,
ZG06Gr13Ni4Mo (CA-6NM) stainless steel, has the following advantages：Obdurability, good rigidity, erosion resistant ability are strong；Axis is selected
1.4313 German materials, the material possess higher elevated temperature strength and anti-oxidant, corrosion resistance, and the country is referred to as superalloy；
The pump housing/pump cover connection bolt selects high intensity material 42CrMo/40Cr good rigidities, connection reliable.Casing ring, impeller seals
Ring selects the good 1Cr13MoS/3Cr13 materials of one group of seizure resistance.Selected material ensures in any applying working condition
The lower pump does not cavitate in itself.
The utility model is detected by performance test, and result data is as follows：Flow Q:1100m3/h；Lift H:100m；
Rotating speed n:1480r/min；Efficiency eta：84%；NPSH:3m.
Meet design requirement by test pump performance parameter, performance is stablized.Efficiency is than HZB253-640, FAID67A efficiency
2% is improved, achievees the purpose that power plant for energy conservation.
In conclusion the utility model fore pump, which has filled up pump industry, is being used as described below parameter flow Q：800-1100m3/
H, lift H:The blank of 80-100m.Solving the problems, such as power plant, preposition pump vibration, part corrosion resistance are poor for many years, efficiency
2% is also improved more in the past.By primary Calculation, by 8000 hours, pump can save 1,800,000 degree of electricity after reducing lift for operation in 1 year.
The purpose for improving entrance of water-supplying pump pressure, again Synergistic and energy-saving should be met by having reached fore pump.
Claims (9)
1. for the fore pump of fired power generating unit, it is characterised in that including the pump housing, pump cover, pump shaft, pump shaft passes through the pump housing, pump cover, pump
Equipped with impeller and axle sleeve on axis, the both ends of pump shaft are respectively equipped with drive end axle bearing assembly and free end shaft bearing assembly, the pump
Lid includes driving end pump cover and free end pump cover, and driving end pump cover is attached separately to free end pump cover in the endoporus of pump housing both sides, is driven
Moved end pump cover is connected with driving end sealed letter body, and driving end sealed letter body is connect with driving end mechanical sealing assembly, free end pump
Lid is connected with free end sealed letter body, and free end sealed letter body is connect with free end mechanical sealing assembly, driving end pump cover, driving
End sealed letter body is connected with the drive end bearing body of drive end axle bearing assembly, free end pump cover, free end sealed letter body and freedom
The free end bearing body of end bearing component is connected.
2. the fore pump according to claim 1 for fired power generating unit, it is characterised in that the drive end axle bearing assembly
Including drive end bearing body, drive end axle pressure cap I, drive end axle pressure cap II, driving end dust pan, deep groove ball bearing, drive
Moved end disc and driving end oil ring set；Deep groove ball bearing hot charging is on pump shaft, deep groove ball bearing outer ring and drive end bearing body
Endoporus transition cooperation is connected, and drive end bearing body connects drive end axle pressure cap I and drive end axle pressure cap II, deep-groove ball respectively
Setting driving end disc between bearing and pump shaft, driving end disc suit driving end oil ring are put on；Drive end axle pressure cap I
Driving end dust pan is respectively equipped between drive end axle pressure cap II and pump shaft.
3. the fore pump according to claim 1 for fired power generating unit, it is characterised in that the drive end bearing body casting
There is cooling fin.
4. the fore pump according to claim 1 for fired power generating unit, it is characterised in that the free end shaft bearing assembly
Including free end bearing body, free end shaft pressure cap I, free end shaft pressure cap II, free end dust pan, angular contact ball bearing,
Bearing regulation ring, free end disc and free end oil ring set；Angular contact ball bearing hot charging is on pump shaft, outside angular contact ball bearing
Circle is connected with transition cooperation in hole in the bearing body of free end, and free end bearing body connects free end shaft pressure cap I and free end respectively
Bearing gland II sets free end disc, free end disc suit free end oil ring between angular contact ball bearing and pump shaft
It puts on, free end dust pan is equipped between free end shaft pressure cap II and pump shaft；The angular contact ball bearing is connected with bearing
Regulation ring.
5. the fore pump according to claim 1 for fired power generating unit, it is characterised in that the free end bearing body casting
There is cooling fin.
6. the fore pump according to claim 1 for fired power generating unit, it is characterised in that the driving end mechanical seal
Component is mounted on driving end sealed letter body, and free end mechanical sealing assembly is mounted on the sealed letter body of free end, drives terminal
Tool seal assembly and free end mechanical sealing assembly are integrated mechanical sealing, drive end integrated mechanical sealing and free end
Integrated mechanical sealing backwashing manner uses external cooling water, and external cooling water rinses dynamic and static ring by mechanical seal cover screw hole
Reach cooling purpose.
7. the fore pump according to claim 1 for fired power generating unit, it is characterised in that the driving end sealed letter body
Driving end cooling cavities is formed with the pump housing, driving end pump cover；The free end sealed letter body is formed with the pump housing, free end pump cover
Free end cooling cavities.
8. the fore pump according to claim 1 for fired power generating unit, it is characterised in that the pump housing is double using single-stage
Inhale spiral case, symmetrical expression arrangement.
9. the fore pump according to claim 1 for fired power generating unit, it is characterised in that the pump housing and pump cover seam allowance
It is sealed at cooperation using wound gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721234470.XU CN207485737U (en) | 2017-09-25 | 2017-09-25 | For the fore pump of fired power generating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721234470.XU CN207485737U (en) | 2017-09-25 | 2017-09-25 | For the fore pump of fired power generating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207485737U true CN207485737U (en) | 2018-06-12 |
Family
ID=62482497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721234470.XU Expired - Fee Related CN207485737U (en) | 2017-09-25 | 2017-09-25 | For the fore pump of fired power generating unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207485737U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115717594A (en) * | 2022-11-07 | 2023-02-28 | 阳光泵业(天津)有限公司 | A centrally supported axial flow pump |
-
2017
- 2017-09-25 CN CN201721234470.XU patent/CN207485737U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115717594A (en) * | 2022-11-07 | 2023-02-28 | 阳光泵业(天津)有限公司 | A centrally supported axial flow pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 |