CN208966601U - A kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction - Google Patents
A kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction Download PDFInfo
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- CN208966601U CN208966601U CN201821708421.XU CN201821708421U CN208966601U CN 208966601 U CN208966601 U CN 208966601U CN 201821708421 U CN201821708421 U CN 201821708421U CN 208966601 U CN208966601 U CN 208966601U
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- booster cavity
- inner housing
- drive shaft
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- centrifugal
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Abstract
The utility model relates to a kind of centrifugal multistage pump multiple centrifugal pumps of inner housing split monolithic construction, affiliated multistage centrifugal pump technical field, including drive shaft, drive shaft is equipped with several and drive shaft inner housing that separately formula is socketed, and inner housing is equipped with several impellers being fixedly connected with the drive shaft formula of being nested with driving between centers.Inner housing includes interior housing base, chopped-off head booster cavity and secondary booster cavity are equipped in interior housing base, the connecting shaft hole to socket-connect with drive shaft is equipped between chopped-off head booster cavity and secondary booster cavity, interior housing base one end face is equipped with the suction inlet being connected with chopped-off head booster cavity, and interior housing base other end is equipped with the outlet being connected with secondary booster cavity.Have the characteristics that compact-sized, easy to process, leakproofness is strong, running precision is high, run smoothly, with small vibration and long service life solve the problems, such as flat seal ability and processing and manufacturing difficulty.The complexity for reducing casting technique improves the intensity of structure, improves final product quality.
Description
Technical field
The utility model relates to multistage centrifugal pump technical fields, and in particular to a kind of inner housing split monolithic construction
Centrifugal multistage pump multiple centrifugal pump.
Background technique
Double-casing multi-stage centrifugal pump is the heavy work station centrifugal pump of the applications such as petrochemical industry, boiler feedwater, wherein as added
The Double-casing multi-stage centrifugal pumps such as hydrogen feed pump are made into the form of inner housing horizontally split construction, and such inner shell structure is current
Until state-of-the-art centrifugal multistage pump multiple centrifugal pump structure type.
The pump of inner housing horizontally split construction in high pressure multiple-stage centrifugal pump, there are two types of inner shell structures, and one kind is whole
Casting, one kind are setting type, but the structure of either monoblock type or setting type, are had on the inner housing split of traditional design
Multiple pumping chambers and suction chamber, pumping chamber and suction chamber are alternately arranged, therefore the section of sawtooth arrangement is formed on split.
Inner housing split has the notch of multiple journey zigzag cross distributions, and shape is sufficiently complex.Due to the split
It is the sealing surface cooperated up and down, therefore has the disadvantage in that 1) complicated discontinuous surface is unfavorable for machining and plane precision
Guarantee.2) separator face between each notch is narrow, and the leakage being easy to cause between the high-low pressure chamber of flat seal two sides is altered logical.
3) pressure of partition pressure at both sides chamber has larger difference, and high-low pressure chamber causes partition to be pressurized, and is easier to deform, especially small
When the structure of flow, partition is limited in master-plan by axial dimension, can not be made thick, therefore deformation can increase, be influenced
Flat seal and running precision.
Summary of the invention
The utility model mainly solves that the deficiency that structure is complicated, leakproofness difference is low with running precision exists in the prior art,
Provide a kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction, it is compact-sized, easy to process, leakproofness is strong, fortune
The characteristics of row precision is high, run smoothly, with small vibration and long service life, solves flat seal ability and processing and manufacturing difficulty
The problem of.The complexity for reducing casting technique improves the intensity of structure, improves final product quality.
Above technical problems of the utility model are mainly solved by the following technical scheme:
A kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction, including drive shaft, the drive shaft are equipped with
Several and drive shaft inner housing that separately formula is socketed, the inner housing are nested equipped with several with drive shaft with driving between centers
The impeller that formula is fixedly connected.The inner housing includes interior housing base, and the interior housing base is interior equipped with chopped-off head booster cavity and secondary
Grade booster cavity is equipped with the connecting shaft hole to socket-connect with drive shaft between the chopped-off head booster cavity and secondary booster cavity, and described is interior
One end face of housing base is equipped with the suction inlet that is connected with chopped-off head booster cavity, the interior housing base other end be equipped with it is secondary
The outlet that grade booster cavity is connected.
Rotated by drive shaft impeller, liquid from suction inlet enter, at this time impeller respectively with the head in interior housing base
Grade booster cavity and secondary booster cavity carry out centrifugation pressurization to liquid.It is exported by the liquid after multi-stage booster from outlet.It is multistage
The inner housing of centrifugal pump is divided into two halves up and down.In use, two halves inner housing is combined by split up and down, opened on face in
Bolt-connection.
Preferably, the chopped-off head booster cavity and secondary booster cavity are equipped with several pressures with the mutually movable interlocking of impeller
Water chamber is equipped with suction chamber between the pumping chamber and interior housing base outer wall, transition flow is equipped between the suction chamber and pumping chamber
Road is connected.
Chopped-off head booster cavity and the equal pressure water room of secondary booster cavity, transition runner and suction chamber.Transition runner by suction chamber with
Pumping chamber is connected, and realizes centrifugation water suction pressurization.
Face is opened preferably, being formed in coupling type sealing between the pumping chamber.
Guarantee liquid can smoothly enter into and pressure process.
Preferably, the suction chamber is in not uniform thickness closed circle structure.
Hydraulic structure has been reasonably adjusted, by the position of traditional split splitter, integrated plane has been directlyed adopt and carrys out generation
It replaces, is allowed to form an integral planar.Prevent the liquid for flowing into suction chamber generation from prewhirling.
Preferably, the pumping chamber large scale semicircle runner is separately distributed with suction chamber small size semicircle runner,
The pumping chamber small size semicircle runner is separately distributed with suction chamber large scale semicircle runner.
While guaranteeing fluid flow and flow velocity, the pressure process of maximum efficiency value is realized.Improve the pressurization of centrifugal pump
Grade.
Preferably, the chopped-off head booster cavity is symmetrical in mirror type with secondary booster cavity.
Uniform-pressurizing is played, keeps chopped-off head booster cavity and pressure difference in secondary booster cavity constant.The operation for improving centrifugal pump is steady
It is qualitative, reduce vibration and noise.
The utility model can reach following effect:
The utility model provides a kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction, compared with prior art
Compared with compact-sized, easy to process, leakproofness is strong, running precision is high, runs smoothly, spy with small vibration and with long service life
Point solves the problems, such as flat seal ability and processing and manufacturing difficulty.The complexity for reducing casting technique, improves structure
Intensity improves final product quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the three-dimensional cutaway view of the inner housing in the utility model.
Fig. 3 is the structure sectional view of the inner housing in the utility model.
Fig. 4 is the structure sectional view of the impeller in the utility model.
In figure: drive shaft 1, inner housing 2, impeller 3, suction inlet 4, interior housing base 5, chopped-off head booster cavity 6, secondary booster cavity 7,
Outlet 8, suction chamber 9, transition runner 10, pumping chamber 11, connecting shaft hole 12, the impeller disk 13, impeller blade 14.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment: as shown in Figure 1-3, a kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction, including drive shaft
1, the drive shaft 1 is equipped with 1 set and the inner housing 2 that separately formula is socketed of drive shaft 1, is equipped between inner housing 2 and drive shaft 1
10 groups of impellers 3 being fixedly connected with 1 formula of being nested of drive shaft, inner housing 2 include interior housing base 5, are equipped with chopped-off head in interior housing base 5
Booster cavity 6 and secondary booster cavity 7, chopped-off head booster cavity 6 are symmetrical in mirror type with secondary booster cavity 7.Chopped-off head booster cavity 6 and time
Grade booster cavity 7 is equipped with the pumping chamber 11 of 5 with the mutually movable interlocking of impeller 3, and coupling type sealing is formed between pumping chamber 11
In open face, pumping chamber 11 is in not uniform thickness cylindrical structure.Suction chamber 9 is equipped between 5 outer wall of pumping chamber 11 and interior housing base,
Suction chamber 9 is in not uniform thickness closed circle structure.Transition runner 10 is equipped between suction chamber 9 and pumping chamber 11 to be connected.Pumping chamber 11
Large scale semicircle runner is separately distributed with 9 small size semicircle runner of suction chamber, 11 small size semicircle runner of pumping chamber and water suction
9 large scale semicircle runner of room is separately distributed.The company to socket-connect with drive shaft 1 is equipped between chopped-off head booster cavity 6 and secondary booster cavity 7
Spindle hole 12, interior 5 one end face of housing base are equipped with the suction inlet 4 being connected with chopped-off head booster cavity 6, interior 5 other end of housing base
It is equipped with the outlet 8 being connected with secondary booster cavity 7.
As shown in figure 4, impeller 3 includes the impeller disk 13,6 and 1 tangent annular spread of drive shaft are equipped in the impeller disk 13
Impeller blade 14.By the composite structure of the impeller disk and impeller blade, centrifugation pressurization is realized in pumping chamber.
In conclusion the centrifugal multistage pump multiple centrifugal pump of the inner housing split monolithic construction, have it is compact-sized, easy to process,
The characteristics of leakproofness is strong, running precision is high, run smoothly, with small vibration and long service life, solve flat seal ability and
The problem of fabricating difficulty.The complexity for reducing casting technique improves the intensity of structure, improves final product quality.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned example embodiment, and
Without departing substantially from the essential characteristic of utility model, the utility model can be realized in other specific forms.Therefore nothing
By from the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, the scope of the utility model by
Appended claims rather than above description limit, it is intended that will fall within the meaning and scope of the equivalent elements of the claims
All changes be embraced therein.It should not treat any reference in the claims as limiting related power
Benefit requires.
In short, the foregoing is merely specific embodiment of the utility model, but the structure feature of the utility model not office
It is limited to this, in the field of the utility model, made changes or modifications all cover in this reality any those skilled in the art
Among novel the scope of the patents.
Claims (6)
1. a kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction, it is characterised in that: described including drive shaft (1)
Drive shaft (1) is equipped with several and drive shaft (1) inner housing (2) that separately formula is socketed, the inner housing (2) and drive shaft
(1) several impellers (3) being fixedly connected with drive shaft (1) formula of being nested are equipped between；The inner housing (2) includes interior housing base
(5), be equipped with chopped-off head booster cavity (6) and secondary booster cavity (7) in the interior housing base (5), the chopped-off head booster cavity (6) and
The connecting shaft hole (12) that socket-connects with drive shaft (1) is equipped between secondary booster cavity (7), on (5) one end face of interior housing base
Equipped with the suction inlet (4) being connected with chopped-off head booster cavity (6), interior housing base (5) other end is equipped with to be increased with secondary
The outlet (8) that pressure chamber (7) is connected.
2. a kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction according to claim 1, it is characterised in that: institute
The chopped-off head booster cavity (6) and secondary booster cavity (7) stated are equipped with several pumping chambers (11) with impeller (3) mutually movable interlocking,
Suction chamber (9) are equipped between the pumping chamber (11) and interior housing base (5) outer wall, the suction chamber (9) and pumping chamber (11)
Between be equipped with transition runner (10) be connected.
3. a kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction according to claim 2, it is characterised in that: institute
It is formed between the pumping chamber (11) stated in coupling type sealing and opens face.
4. a kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction according to claim 2 or 3, feature exist
In: the suction chamber (9) is in not uniform thickness closed circle structure.
5. a kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction according to claim 4, it is characterised in that: institute
Pumping chamber (11) the large scale semicircle runner stated separately is distributed with suction chamber (9) small size semicircle runner, the pumping chamber
(11) small size semicircle runner is separately distributed with suction chamber (9) large scale semicircle runner.
6. a kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction according to claim 1, it is characterised in that: institute
The chopped-off head booster cavity (6) stated is symmetrical in mirror type with secondary booster cavity (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821708421.XU CN208966601U (en) | 2018-10-22 | 2018-10-22 | A kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821708421.XU CN208966601U (en) | 2018-10-22 | 2018-10-22 | A kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208966601U true CN208966601U (en) | 2019-06-11 |
Family
ID=66758808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821708421.XU Active CN208966601U (en) | 2018-10-22 | 2018-10-22 | A kind of centrifugal multistage pump multiple centrifugal pump of inner housing split monolithic construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208966601U (en) |
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2018
- 2018-10-22 CN CN201821708421.XU patent/CN208966601U/en active Active
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