CN207621032U - Centrifugal multistage pump multiple centrifugal pump - Google Patents
Centrifugal multistage pump multiple centrifugal pump Download PDFInfo
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- CN207621032U CN207621032U CN201721426127.5U CN201721426127U CN207621032U CN 207621032 U CN207621032 U CN 207621032U CN 201721426127 U CN201721426127 U CN 201721426127U CN 207621032 U CN207621032 U CN 207621032U
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Abstract
Centrifugal multistage pump multiple centrifugal pump described in the utility model has driving end and anti-drive end, includes being equipped with the leading portion of first stage impeller successively to anti-drive end from driving end, is equipped with multiple stage casings of impeller, and be equipped with the back segment of impeller；It is arranged that the pump cover component in anti-drive end is fixedly connected with cylinder part, two bearing brackets are respectively fixedly connected on cylinder part and the pump cover component described in driving end；The both ends of axis are separately installed with drive end bearing component and non-driven-end bearing component, and the drive end bearing component and the non-driven-end bearing component are fixedly mounted with described two bearing brackets respectively, and the first stage impeller is double-entry impeller.The centrifugal multistage pump multiple centrifugal pump first stage impeller uses double-entry impeller, the anti-cavitation performance of pump to obtain significant increase, more conducively adapted to the variation of field working conditions.
Description
Technical field
The utility model is related to a kind of fluid driving equipment more particularly to a kind of centrifugal multistage pump multiple centrifugal pumps.
Background technology
The export project pumped with petrochemical industry increases, and the requirement of user is also higher and higher, since field condition limits, for
The net positive suction head requirement of Double-casing multi-stage centrifugal pump is more stringent, and current single-suction (single-in let) impeller cannot meet high-cavitation-resistance energy
Requirement.Such as user scene tropical, subtropical zone, high environment temperature causes the service life of bearing very big
It influences, the bearing type of self-lubricating has been not suitable with the use condition at scene.
Utility model content
In order to overcome above-mentioned technological deficiency, the utility model to provide a kind of centrifugal multistage pump multiple centrifugal pump of achievable first-stage double-absorption.
In order to achieve the above objectives, a kind of centrifugal multistage pump multiple centrifugal pump described in the utility model has driving end and anti-drive end, from
It includes being equipped with the leading portion of first stage impeller successively to anti-drive end to drive end, is equipped with multiple stage casings of impeller, and be equipped with end
The back segment of grade impeller；
It is arranged the pump cover component of anti-drive end is fixedly connected with cylinder part, two bearing brackets are respectively fixedly connected with
It drives on cylinder part and the pump cover component described in end；
The both ends of axis are separately installed with drive end bearing component and non-driven-end bearing component, the drive end axle bearing portion
Part and the non-driven-end bearing component are fixedly mounted with described two bearing brackets respectively, and the first stage impeller is double suction leaf
Wheel.
Further, there is the non-driven-end bearing component journal bearing, the journal bearing to be slided for four oil film wedge formulas
Bearing.
Further, the journal bearing uses forced feed lubrication.
Further, it is the Ritchies Jin Sibu formula that the non-driven-end bearing component, which has thrust bearing, the thrust bearing,
Bearing.
Further, the thrust bearing uses forced feed lubrication.
Further, the cylinder part has the input terminal for fluid input；
The input terminal is provided with the first barrel connecting pipe, and first barrel connecting pipe with entrance sleeve for being fixedly connected.
Further, the seam allowance of first barrel connecting pipe is welded with the entrance sleeve.
Further, the cylinder part has the output end extruded for fluid；
The output end is provided with the second barrel connecting pipe, and second barrel connecting pipe with discharge connection for being fixedly connected.
Further, the seam allowance of second barrel connecting pipe is welded with the discharge connection.
Further, metal face seal is used between multiple stage casings.
Centrifugal multistage pump multiple centrifugal pump first stage impeller described in the utility model uses double-entry impeller, the anti-cavitation performance of pump to obtain greatly
It is promoted, more conducively adapts to the variation of field working conditions.
The journal bearing or thrust bearing use forced feed lubrication, and it is excessively high and occur to overcome hot environment lower bearing temperature
The problem of mechanical breakdown.The cylinder part is designed using eccentric, solves the problems, such as that radiological survey X is difficult at barrel connecting pipe.
Centrifugal multistage pump multiple centrifugal pump described in the utility model is suitable for conveying high oil product pitting, without solid particle,
And the conveying applied to petrochemical process and other chemical industries.
Description of the drawings
When considered in conjunction with the accompanying drawings, by referring to following detailed description, it can more completely more fully understand that this practicality is new
Type and being easy learns the advantage that many of which is adjoint, but attached drawing described herein is used for providing to the utility model into one
Step understands, constitutes the part of the utility model, the exemplary embodiment of the utility model and the description thereof are for explaining this practicality
It is novel, it does not constitute improper limits to the present invention, such as schemes wherein：
Fig. 1 is the overall structure diagram of horizontal Double-casing multi-stage centrifugal pump described in embodiment；
Fig. 2 is 1 structural schematic diagram of cylinder part described in embodiment；
Fig. 3 is B area partial enlarged view in Fig. 1；
Fig. 4 is a-quadrant partial enlarged view in Fig. 1.
Specific implementation mode
With reference to the accompanying drawings of the specification, centrifugal multistage pump multiple centrifugal pump described in the utility model is illustrated.
As shown in Figure 1, one end of the horizontal double casing volute pump described in the present embodiment is driving end, the other end is non-driven
End；It is followed successively by from driving end to anti-drive end：The leading portion of first stage impeller 4 is installed, multiple stage casings 6 of impeller, and peace are installed
Back segment equipped with impeller；For balancing axial thrust, balancing device 7 is housed in non-grade impeller back face；It is arranged in anti-drive end
Pump cover component 2 be fixedly connected with cylinder part 1, two bearing brackets 8 put together on driving end cylinder part 1 and pump cover respectively
Corresponding on component 2, the both ends of axis 3 are separately installed with drive end bearing component 9 and non-driven-end bearing component 10, two axis
Bearing portion part is fixedly mounted with two bearing brackets 8 respectively.
The top and bottom of the horizontal double casing volute pump are also separately installed with balance wet part 12, water drainage part 13.
Preferably, it is metal face seal between stage casings 6 at different levels, using screw step by step conjunction.
As shown in Figure 1 and Figure 2, pump barrel body is designed using eccentric, and cylinder part 1 has the input terminal and fluid that fluid enters
The output end of extrusion processes the first barrel connecting pipe 11 of certain length in input terminal, it is preferable that the first barrel connecting pipe 11 stops
Mouth is used for and entrance sleeve 14 carries out butt welding；The second barrel connecting pipe 18 of certain length is processed in output end, it is preferable that second
Body take over 18 is used to carry out butt welding with discharge connection 15, to improve corresponding weld seam 16 to the top of cylinder part 1, convenient for pair
Weld seam carries out radiological survey X.In order to improve the erosion resistibility in cylinder part 1, increased at discharge opening in cylinder part 1
Stainless steel weld overlays 17；Preferably, the stainless steel that overlay cladding is selected is 316L.
As shown in figure 3, first stage impeller 4 uses double-entry impeller, the net positive suction head of pump is greatly reduced, disclosure satisfy that scene
Stringent net positive suction head requirement.
As shown in figure 4, the journal bearing 100 of the non-driven-end bearing component 10 uses four oil film wedge formula sliding bearings, institute
It states that four oil film wedge formula sliding bearing structures are compact, and load-carrying ability is big, can preferably adapt to centrifugal multistage pump multiple centrifugal pump oepration at full load operating mode
Intensity requirement.Preferably, the lubricating system of the journal bearing 100 is forced feed lubrication；The non-driven-end bearing component 10
Thrust bearing 101 using Jin Sibu Ritchies formula thrust bearing, the Ritchies Jin Sibu type thrust bearing, the load distribution of each tile fragment
Uniformly, adjustment is flexible, can compensate for the misaligning of rotor, deflection；Preferably, the lubricating system of the thrust bearing 101 is strong
System lubrication.
As described above, being explained in detail to the embodiments of the present invention, it is clear that as long as essentially without disengaging
The utility model point and effect of the utility model, will be readily apparent to persons skilled in the art deformation, also all wrap
Containing being within the protection scope of the utility model.
Claims (10)
- Include that head is installed successively to anti-drive end from driving end 1. a kind of centrifugal multistage pump multiple centrifugal pump has driving end and anti-drive end The leading portion of grade impeller (4), is equipped with multiple stage casings (6) of impeller, and be equipped with the back segment of impeller；It is arranged the pump cover component (2) of anti-drive end is fixedly connected with cylinder part (1), two bearing brackets (8) are fixed respectively It is connected on cylinder part (1) and the pump cover component (2) described in driving end；The both ends of axis (3) are separately installed with drive end bearing component (9) and non-driven-end bearing component (10), the drive end axle Bearing portion part (9) and the non-driven-end bearing component (10) are fixedly mounted with described two bearing brackets (8) respectively, feature It is, the first stage impeller (4) is double-entry impeller.
- 2. centrifugal multistage pump multiple centrifugal pump according to claim 1, which is characterized in that the non-driven-end bearing component (10) has diameter To bearing (100), the journal bearing (100) is four oil film wedge formula sliding bearings.
- 3. centrifugal multistage pump multiple centrifugal pump according to claim 2, which is characterized in that the journal bearing (100) uses forced feed lubrication.
- 4. according to the centrifugal multistage pump multiple centrifugal pump described in claim 1-3 any one, which is characterized in that the non-driven-end bearing component (10) it is the Ritchies Jin Sibu formula bearing to have thrust bearing (101), the thrust bearing (101).
- 5. centrifugal multistage pump multiple centrifugal pump according to claim 4, which is characterized in that the thrust bearing (101) uses forced feed lubrication.
- 6. centrifugal multistage pump multiple centrifugal pump according to claim 5, which is characterized in that the cylinder part (1) has defeated for fluid The input terminal entered；The input terminal is provided with the first barrel connecting pipe (11), and first barrel connecting pipe (11) is used for solid with entrance sleeve (14) Fixed connection.
- 7. centrifugal multistage pump multiple centrifugal pump according to claim 6, which is characterized in that the seam allowance of first barrel connecting pipe (11) and institute State entrance sleeve (14) welding.
- 8. the centrifugal multistage pump multiple centrifugal pump described according to claim 6 or 7, which is characterized in that the cylinder part (1), which has, is used for fluid The output end of extrusion；The output end is provided with the second barrel connecting pipe (18), and second barrel connecting pipe (18) is used for solid with discharge connection (15) Fixed connection.
- 9. centrifugal multistage pump multiple centrifugal pump according to claim 8, which is characterized in that the seam allowance of second barrel connecting pipe (18) and institute State discharge connection (15) welding.
- 10. centrifugal multistage pump multiple centrifugal pump according to claim 9, which is characterized in that use metal covering between multiple stage casings (6) Sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721426127.5U CN207621032U (en) | 2017-10-31 | 2017-10-31 | Centrifugal multistage pump multiple centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721426127.5U CN207621032U (en) | 2017-10-31 | 2017-10-31 | Centrifugal multistage pump multiple centrifugal pump |
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| Publication Number | Publication Date |
|---|---|
| CN207621032U true CN207621032U (en) | 2018-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721426127.5U Active CN207621032U (en) | 2017-10-31 | 2017-10-31 | Centrifugal multistage pump multiple centrifugal pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360765A (en) * | 2020-09-22 | 2021-02-12 | 东风汽车集团有限公司 | Turbocharger |
-
2017
- 2017-10-31 CN CN201721426127.5U patent/CN207621032U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360765A (en) * | 2020-09-22 | 2021-02-12 | 东风汽车集团有限公司 | Turbocharger |
| CN112360765B (en) * | 2020-09-22 | 2021-11-30 | 东风汽车集团有限公司 | Turbocharger |
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