CN106065861A - Centrifugal multistage pump multiple centrifugal pump - Google Patents
Centrifugal multistage pump multiple centrifugal pump Download PDFInfo
- Publication number
- CN106065861A CN106065861A CN201610247904.3A CN201610247904A CN106065861A CN 106065861 A CN106065861 A CN 106065861A CN 201610247904 A CN201610247904 A CN 201610247904A CN 106065861 A CN106065861 A CN 106065861A
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- China
- Prior art keywords
- wall portion
- section
- centrifugal pump
- pump
- annular flange
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
- F04D1/063—Multi-stage pumps of the vertically split casing type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4293—Details of fluid inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of centrifugal multistage pump multiple centrifugal pump, it has: base section (2)；Top section (14)；With the wall portion (16) making base section (2) be connected with top section (14), this wall portion surrounds pump stage on the outer periphery.Additionally, centrifugal pump also has the motor cabinet being connected on top section (14), this motor cabinet is used for receiving the centrifugal pump motor (20) of driving.Wall portion (16) in axial direction extends beyond top section (14) and is connected with motor cabinet.
Description
Technical field
The present invention relates to a kind of centrifugal multistage pump multiple centrifugal pump.
Background technology
The starting point of the present invention stems from such as by known to pump product line CR of Grandfos (Grundfos) company and CRE
Centrifugal pump.Herein relate to the centrifugal multistage pump multiple centrifugal pump of a kind of vertical operation, wherein, in pump case, in the base portion of pump case
Dividing and be provided with at least two pump stage between top section, base section has been connected by these pump stages on the outer periphery with top section
The wall portion come is surrounded.Base section is provided with aspiration cannula and the pressure sleeve of centrifugal pump.Supplied by centrifugal pump
Liquid first pass through aspiration cannula and arrive in the first pump stage, and therefrom further until arriving last pump stage, then liquid
Body is delivered back into base section again from this last pump stage again, and is directed out centrifugal pump by pressure sleeve there.
The pump shaft of the centrifugal pump coupled together by the impeller of each pump stage is sealingly extended through top section, and there, pump shaft drives with electricity
The motor shaft motion coupling of galvanic electricity machine, this electric drive motor is bearing in axially spacedly with top section and is generally made up of cast steel
Motor cabinet on.In known centrifugal pump, motor cabinet or the integrated package as top section, or by releasably solid
It is scheduled on top section, here, motor cabinet is connected with base section by connecting-rod bolts.
Summary of the invention
Present invention aim at providing the centrifugal multistage pump multiple centrifugal pump of a kind of aforementioned type, this centrifugal multistage pump multiple centrifugal pump is relative to known pump
There is the structure of simplification and more accessible outward appearance.
The purpose of the present invention is realized by a kind of centrifugal multistage pump multiple centrifugal pump.The preferred expansion scheme of this centrifugal pump is by following
Illustrate, accompanying drawing and other parts are given.Here, feature described in description and other parts can be made individually
With, but can also be further expanded according to technical scheme by suitable combination with one another.
Centrifugal multistage pump multiple centrifugal pump according to the present invention has base section and top section, is provided with at least two pump between which
Level, each pump stage is respectively provided with respective impeller.This centrifugal pump is preferably the centrifugal pump of a kind of vertical operation, say, that be as
Under such centrifugal pump: it is stood upright on base section and is run by the impeller axle being vertically oriented, however, it is noted that
Centrifugal pump according to the present invention can also be the centrifugal pump run on arbitrarily other place.The pump stage of this centrifugal pump is in periphery
On surrounded by wall portion, base section is coupled together by this wall portion with top section, and therefore with base section and top
Portion's part constitutes pump case together.Additionally, have the motor cabinet being connected on top section according to the centrifugal pump of the present invention, this electricity
Support is for carrying the motor making centrifugal pump run.This motor is spaced apart with top section along the direction of centrifugal pump axis
Be bearing on motor cabinet, here, the end stretching out top section of the pump shaft being connected with the impeller of pump stage can be at motor
In the region of seat, the motor shaft with motor couples.
Relative to the known centrifugal multistage pump multiple centrifugal pump of mentioned type, it is characterised by according to the centrifugal pump of the present invention: pump case
The wall portion of body in axial direction, namely along the direction of centrifugal pump axis in other words along the direction of impeller axle of centrifugal pump
Extend beyond top section, and be connected with the motor cabinet being used for receiving motor.Therefore contrary, at root with conventional centrifugal pump
According in the centrifugal pump of the present invention, carrying motor cabinet is no longer top section, but by surrounding centrifugal pump pump stage on the outer periphery
Wall portion replaces.Expand the design freedom of the design about centrifugal pump the most significantly.This such as relates to
Design to top section, top section can due to its relative to known centrifugal pump obvious less static load and
Structure and manufacturing technology aspect are simplified.It is currently used for connecting the motor cabinet connecting-rod bolts with base section according to the present invention's
Centrifugal pump will no longer be required.Overall visual appearance about centrifugal pump also will obtain brand-new possibility, so that centrifugal pump
Can be designed to the most substantially to be more easy to close.
Saying from structure and manufacturing technology, preferably wall portion is made up of pipe simply, and top section is added into this
Guan Zhong.This pipe can have the pipe of weld seam or seamless pipe.In the case of for seamless pipe, pipe such as can pass through deep-draw
Pressure manufactures, and it is possible to be readily determined the wall thickness of wall portion.Independent of the design of pipe, pipe can be an end
On be connected hermetically with base section pressure aptly.Top section by the other end with pipe at interval pacify turn pipe with
In the section that this other end is adjacent, and same pressure is connected with this pipe hermetically.Preferred top part is quilt on this position
It is welded in pipe.Here, top section and pipe be welded to connect the inside that can be disposed in pipe, or this is welded to connect permissible
Carry out from the outside of pipe.
Motor cabinet preferably has annular flange, and this annular flange is arranged on the district extending beyond top section of wall portion
On the end of section.Preferably this annular flange, the most whole motor cabinet is aluminium casting.The radial dimension of annular flange is preferred
For, make the periphery of annular flange align with the periphery of wall portion, so that annular flange extends only into wall portion diametrically
The most only extend along towards the direction within wall portion in the headroom gauge (Lichtraumprofil) of part, but
The periphery of wall portion is not stretched out in outside.
Further preferably annular flange is configured to convex shoulder shape, is embedded in wall portion here, annular flange has
Section in portion and the section lain on wall portion end.In the case, the section in wall portion inside it is embedded into
External diameter consistent with the internal diameter of wall portion aptly, so that wall portion can be at the free end of its base section dorsad
On be radially supported on the section being embedded in wall portion inside, this give wall portion constitutes motor cabinet
The higher stability of section.
Whole motor cabinet preferably it is made up of annular flange.The most such design: loop method
Orchid is designed to fixed motor.Motor is bearing in the flange side of the base section dorsad of annular flange in the case
On.Being fixed on annular flange by motor is the district in the headroom gauge extending to wall portion of annular flange aptly
Territory is carried out, arranges the most in this region and be positioned at the fixture on annular flange side, in order to motor is fixed on ring
On shape flange.Be preferable configured with the through hole for receiving bolt at this, motor is connected with annular flange by these bolts.
In the another kind of preferably design of the centrifugal pump according to the present invention, annular flange is designed to fixing many
Individual different motor.Can be preferably arranged in this article: on annular flange, with the first radial spacing and annular flange
Axis arranges multiple through holes of the peripheral distribution of a row radially flange at interval, for the pairing with the first motor
Flange is set up bolt and is connected；And with at least different from the radial spacing of above-mentioned through hole the second radial spacing annularly flanges
The through hole that one row is other is set to peripheral distribution, is connected for setting up bolt with the companion flange of the second motor.
In the preferred design of a kind of replacement for the annular flange directly constituting motor cabinet, can be in order to constitute
Motor cabinet and in axial direction prominent appendix is set on annular flange, in the end of the annular flange dorsad of this appendix
On be provided for the mounting flange of motor.It is favourable that this design is proved when such as using bigger motor
's.Additionally, appendix axially projecting on annular flange allows the section stretching out centrifugal pump top section of wall portion
Being designed as relatively short, this will bring the impact in front for the bending resistance of this section and resistance to torsion.When using less electricity
During motivation, the mounting flange on the end being arranged on the annular flange dorsad of appendix can be sized to: this is fixed
Flange can be arranged on the inside of the headroom gauge of wall portion；Or when the structure of motor is bigger in other words electronic
When facility have the companion flange bigger relative to mounting flange, also will radially stretch out the outline of wall portion.
At least one window it is preferably provided with on the section of top section extending beyond of wall portion.This window is understood
For the bigger breach being arranged on wall portion, when carrying out maintenance and repair, electricity can constituted by such breach
Close to the inside of wall portion in the region of the section of support.Therefore, this at least one window is integrated in wall portion.?
When determining the size of window, wall portion to be considered needs to carry the weight of motor, i.e. this at least one window should not
The mechanical stability of wall portion can be affected, therefore can not be the biggest.
Additionally want it is considered that weakened by the machinery to wall portion caused by least one window may be to meaning
The natural frequency excitation of outer wall portion has adverse effect on.In order to offset this adverse effect, preferably by suitable
Measure improves the rigidity of wall portion.Step about the direction potentially includes: wall portion is in the district stretching out top section
Wall thickness in Duan is increased relative to the wall thickness on other wall portion.Other measure there may also be: by the covering of window
Plate provides bearing function.In addition frame for movement can also be made to keep stable by such a way: i.e., to set in wall portion
Put corresponding mechanically deform portion.
Particularly preferably construct two windows, the two window quilt on the section of top section extending beyond of wall portion
Arrange as follows: i.e., it is possible to by these windows come close to make shaft seal that pump shaft sealed relative to top section and
At least one of centrifugal pump is arranged on the air bleeding valve on top section.Preferably according in the centrifugal pump of the present invention in top
Arranging two air bleeding valves on Fen, the two air bleeding valve is jointly extending through axis flat of centrifugal pump and top section thereof
Face is arranged on the both sides of axis dorsad.In this case, two windows on wall portion will be constructed aptly
Mouth diameter each other is oppositely disposed on the radial outside of air bleeding valve.
The top section of the centrifugal pump according to the present invention is preferably designed to deep draw parts, and it is preferably by stainless steel
Become.Therefore the sheet material of relative thin-walled can be used to make top section, and this sheet material is formed from steel and is preferably made of stainless steel,
The shape of preferably arch thus can be transformed into by means of deep draw process.Therefore relative to the top being made up of cast steel at present
Part, has significantly smaller weight according to the top section of the centrifugal pump of the present invention, and this is generally for the gross weight of centrifugal pump
There is the impact in front.It has moreover been verified that: use rustless steel to be conducive to the corrosion resistance of top section.
In order to realize the purpose safeguarded, clean or repair, wall portion is made releasably to be connected with base section aptly
Connect.Being preferably arranged at this, wall portion is clamped on base section by clamping ring.In this case, it is preferable to by bottom
One section of part is embedded in the top section dorsad of wall portion and the end section of motor cabinet, here, outside in footpath
Side surrounds the clamping ring of wall portion and presses wall portion relative to base section.Here, in order to make wall portion the end of relative to
Portion's part is sealed hermetically by pressure, arranges sealing member aptly between wall portion and base section.
Clamping ring preferably circumferentially direction for making wall portion be connected with base section is divided in multiple ring segments
Turn up the soil composition.Therefore clamping ring has multiple ring segment, and these ring segments circumferentially direction arranges abreast and is connected to each other, with
Form clamping ring.This separate design of clamping ring is favourable in the case of following: i.e., it makes clamping ring energy
The uniform force transmission being enough simply provided on the outside of wall portion and guarantee on from clamping ring to wall portion.
Preferably each ring segment of clamping ring is configured to, two circumferential end of ring segment are respectively provided with directly with
The breach that each end of ring segment is adjacent, here, the first breach is arranged on the axis being perpendicular to clamping ring of ring segment
On first planar side of line orientation, and another breach is arranged on the first planar side dorsad and is parallel to the first planar side orientation
On second planar side.Therefore, when ring segment is assembled on wall portion, a breach points to the side of top section
To, and another breach is towards base section.In the region of these breach, the ring segment being connected to each other of clamping ring is along clamping ring
Circumferential direction and axial direction overlap the to each other (ü berlappend) arrange.
Preferably each ring segment of clamping ring is not only connected with one another, and is connected with base section respectively.Therefore, at root
According in the another kind of preferably design of the centrifugal pump of the present invention, the ring segment of clamping ring in the case of being connected to each other again with
Base section screw connects.To this end, construct the through hole of the axial direction orientation along clamping ring on two breach of ring segment,
This through hole is arranged to, when clamping ring is already connected to together and the breach of ring segment overlaps each other, each other
On overlapping breach, the through hole of structure is in alignment with each other.Each nut bolt is imported by the public through hole so constituted,
This nut bolt is screwed in the tapped blind hole being arranged on base section.
Accompanying drawing explanation
Referring to embodiment illustrated in the accompanying drawings, the present invention is elaborated.The most respectively schematically,
Simplifiedly and in different proportions chi illustrates:
Fig. 1 shows vertical centrifugal multistage pump multiple centrifugal pump with side view；
Fig. 2 shows the sectional view of the line of cut Π-Π along Fig. 1；
Fig. 3 shows the centrifugal pump according to Fig. 1 and Fig. 2 with top view；
Fig. 4 shows the end region in centrifugal pump top section region of centrifugal pump according to Fig. 1-Fig. 3 at perspective view
Section；
Fig. 5 shows the view in the V-V direction along Fig. 4；
Fig. 6 illustrate in perspective view the end region in centrifugal pump base section region of the centrifugal pump according to Fig. 1-Fig. 3
Section；
Fig. 7 shows the end section according to Fig. 6 with side view；
Fig. 8 shows the ring segment of clamping ring with top view；
Fig. 9 illustrate in perspective view the ring segment according to Fig. 8；
Figure 10 shows the detail section A coming from Fig. 2；
Figure 11 illustrate in perspective view pump assembly, and this pump assembly has centrifugal pump as shown in Figure 1-Figure 3 and for driving
Centrifugal pump motor；
Figure 12 with longitudinal cross-section illustrate centrifugal pump according to the second design at centrifugal pump top subregion
End section in territory；
Figure 13 illustrate in perspective view the detail section coming from Figure 12；
Figure 14 with longitudinal cross-section illustrate the centrifugal pump according to the third design at centrifugal pump top subregion
End section in territory；And
Figure 15 shows the end section of the pump assembly with the centrifugal pump according to the 4th kind of design with side view.
Wherein, description of reference numerals is as follows:
2 base sections
4 couple flange
6 couple flange
8 suction channels
10 impellers
12 housings
14 top sections
16,16 ' wall portion
18,18 ' sections
20 motor
22 couplings
24,24 ', 24 " annular flanges
26,26 ' sections
28,28 ', 28 " sections
30 through holes
32 through holes
34 windows
36 shaft seals
38 air bleeding valves
40 tongues
42 through holes
44 sections
46 sections
48 cannelures
50 sealing rings
52 clamping rings
54 ring segments
56 breach
58 breach
60 planar sides
62 planar sides
64 convex shoulders
66 bolts
68 through holes
70 convex shoulders
72 juts
74 tapped blind holes
76 structural members
78 contact pin
80,80 ' mounting flanges
82 penetrating parts
84 retaining elements
86 matrixes
88 end section
90 screwed holes
92 through holes
94 nut bolts
96 companion flanges
98 ribs
A details part
X axis
Detailed description of the invention
Centrifugal multistage pump multiple centrifugal pump shown in Fig. 1-Figure 11 has base section 2.This base section 2 is equipped with two attached methods
Blue 4 and 6.In coupling flange 4 and 6, couple flange 4 and constitute the aspiration cannula of centrifugal pump, and couple flange 6 and constitute centrifugal pump
Pressure sleeve.
The connection flange 4 of composition aspiration cannula is around suction channel 8, and this suction channel is passed into shape in base section 2
The inside of the suction space become, the pump orifice of the impeller 10 of the first pump stage of centrifugal pump is connected in this suction space, the first pump
Level is made up of impeller 10 and the housing 12 surrounding this impeller.Centrifugal pump has five pumps being made up of impeller 10 and housing 12 altogether
Level.These pump stages are arranged the most stackedly, here, the impeller 10 of these pump stages is installed on a total pump shaft, and this pump shaft
Vertically spaced apart with base section 2 top section 14 is brought out the pump case of centrifugal pump at the top of centrifugal pump
Body.This pump shaft is not the emphasis of the present invention, therefore to omitted in the accompanying drawings for the sake of Qing Chu.
In addition to base section 2 and top section 14, the pump case of centrifugal pump is also made up of wall portion 16, this wall portion
Part makes base section 2 couple together with top section 14, and spaced radial is turned up the soil around the pump stage of centrifugal pump.In current reality
Execute in example, use stainless steel tube as wall portion 16.Particularly as shown in Fig. 1, Fig. 4 and Figure 11, wall portion 16 has district
Section 18, this section extends beyond top section 14 along the axial direction of centrifugal pump.Thus, top section 14 and wall portion 16
During the end of base section 2 is integrated into wall portion 16 at interval dorsad, here, top section 14 is by welding and wall portion
Part 16 pressure connects hermetically.This welding is to fetch enforcement by Laser Welding on the medial surface of wall portion 16.
The end of the base section dorsad 2 of the section 18 of wall portion 16 is provided with annular flange 24.This loop method
Blue 24 motor cabinets constituting motor 20, here, the motor shaft of motor 20 passes through the coupling 22 section at wall portion 16
The region of 18 connects unshowned pump shaft.
As in figure 2 it is shown, it is that annular flange 24 is designed to convex shoulder shape and there is the district being embedded in wall portion 16 inside
Section 26 and the section 28 lain on the end of wall portion 16.In the case, the section 26 of annular flange 24 is outer transversal
Face is consistent with the interior cross section of wall portion 16, and the external cross section of the section 28 of annular flange 24 and the outer horizontal stroke of wall portion 16
Cross section is consistent.
The bolt that connects through of motor 20 and annular flange 24 is connected and carries out.To this end, at ring the most as shown in Figure 4
On shape flange 24, it is provided with the axle of four annularly flanges 24 at interval with the center of identical radial spacing Yu annular flange 24
The through hole 30 extended to direction, these through holes are used for receiving bolt, and the companion flange of motor 20 passes through these bolt quilts
It is fixed on annular flange 24.Additionally, be provided with the through hole 32 that four additional is axially directed on annular flange 24, these are through
Hole is arranged at interval with the center of identical radial spacing with annular flange 24, here, through hole 32 and annular flange 24
The radial spacing at center is less than the radial spacing of through hole 30 with the center of annular flange 24.Through hole 32 is used for fixing electronic
Machine, the companion flange of this motor is different from the companion flange of motor 20.
The section 18 of wall portion 16 is provided with two windows 34 that diameter each other is opposed.Can be from by window 34
The outside of wall portion 16 is close to the inside of the section 18 of wall portion 16.Therefore at the coupling making pump shaft be connected with motor shaft
It is arranged on top on 22 and two of the shaft seal 36 making pump shaft be sealed relative to top section 14 and centrifugal pump
Divide other assemblings, maintenance or the repair work that are carried out on the air bleeding valve 38 on 14 can be carried out by window 34.
The upper side towards annular flange 24 of window 34 is respectively equipped with two breach, is respectively embedded in this breach
Having tongue 40, this tongue points to the inside of wall portion 16 and for annular flange 24 is releasably secured to portion of wall portion
Divide on 16.The through hole receiving bolt it is respectively provided with in the region of the section 26 hiding annular flange 24 of tongue 40
42, the tapped blind hole that this bolt is screwed on the section 26 be arranged at annular flange 24 and its position is consistent with through hole 43
In, so that annular flange 24 is fixed on wall portion 16.
Wall portion 16 radial expansion as follows on the end of its top section 14 dorsad: wall portion 16 leads to there
Cross convex shoulder to be transitioned in the section 44 of radial expansion.The extension section 44 of wall portion 16 is embedded with the section of base section 2
46, this section constitutes the part (see Fig. 2 and Figure 10) that the flowing coupled between flange 4 and 6 with pump case is connected.In base portion
The periphery dividing the section 46 of 2 is provided with cannelure 48, and this cannelure makes wall portion 16 relative to base section 2 quilt for reception
The sealing ring 50 (Fig. 2) sealed.
The pressure of wall portion 16 and base section 2 is tightly connected and is carried out by clamping ring 52.Clamping ring 52 is by structure
Making as circumferentially spaced and have six identical ring segments 54, the structure of these ring segments can be seen clearly by Fig. 8 and Fig. 9.
As shown in Figure 8 and Figure 9, two circumferential end of ring segment 54 are respectively arranged with direct and that associated end is adjacent breach 56
Or 58.Here, breach 56 is arranged on planar side 60, breach 58 is arranged on the smooth of the planar side dorsad 60 of ring segment 54
On side.With planar side 60 adjacently, ring segment 54 is also respectively provided with convex shoulder 64, and this convex shoulder is already connected to together at ring segment 54
State under point to clamping ring 52 center direction.When this connecting, ring segment 54 is being arranged at ring segment 54
On breach 56 and 58 region in stacked on top of each other, here, first annular section 54 in the region of breach 56 along clamping ring 52
The same axial direction along clamping ring 52 in the region of breach 58 of section and the second ring segment 54 that reduces of axial direction
The section reduced contacts.
Being connected to each other to be connected by screw of ring segment 54 is realized.In order to receive the bolt 66 required at this, at ring
In shape section 54, in the region of breach 56 and 58, it is provided with through hole 68, when adjacent ring segment 54 is in the region of breach 56 and 58
In stacked on top of each other time, these through holes are mutually aligned.Bolt 66 is applied not only to make ring segment 54 be connected to each other, but also is used for making
Clamping ring 52 clamps on the lateral surface of wall portion 16, as shown in Figure 10.In order to make clamping ring 52 outside wall portion 16
Clamp on side, each ring segment 54 of clamping ring 52 is arranged on the lateral surface of wall portion 16 as follows: these annulars
Duan Yiqi convex shoulder 64 is enclosed on wall portion 16 convex shoulder 70 of the transition part constituting the extension section 44 going to this wall portion,
And abut on base section 2 on radially-protruding six juts 72, here, it is arranged on the district stacked on top of each other of ring segment 54
Through hole 68 in section aligns with the tapped blind hole 74 being arranged on jut 72.In order to make clamping ring 52 at wall portion 16
Clamping on lateral surface, the bolt 66 of the through hole 68 being guided through ring segment 54 is screwed in tapped blind hole 74.
Centrifugal pump as shown in Figures 12 and 13 makes bottom relative to the difference is that only of centrifugal pump shown in Fig. 1-Figure 11
The design of the wall portion that part 2 is connected with top section 14 and motor cabinet and the design of the connection with wall portion thereof
Scheme.In centrifugal pump as shown in Figure 12 and Figure 13, wall portion 16 ' is the wall portion of centrifugal pump as shown in Fig. 1-Figure 12
16 equally extend beyond top section with lesser extent, so that the section 18 ' of wall portion 16 ' is smaller than at Fig. 1-figure
The section 18 of the wall portion 16 of the centrifugal pump shown in 12.
The upper end of wall portion 16 ' as shown in Figure 12 and Figure 13 is provided with annular flange 24 ', this annular flange with
Section 26 ' is embedded into the inside of wall portion 16 ' and lies on wall portion 16 ' with section 28 '.Annular flange 24 ' is at it
Load assembly 76 on the flange side of top section 14 dorsad.This structural member 76 is made up of two contact pin 78, and the two contact pin exists
Arrange opposite one another on annular flange 24 and tilt on the axis X of centrifugal pump.Figure 12 and Figure 13 can only see
A contact pin 78 in the two contact pin 78.
The end of the annular flange 24 ' dorsad of structural member 76 is provided with mounting flange 80.Mounting flange 80 is for solid
Determining motor 20, this motor is screwed on mounting flange 80 by companion flange.
Thus, annular flange 24 ', structural member 76 constitute the motor cabinet for motor 20 together with mounting flange 80,
This, on this motor cabinet, be arranged between mounting flange 80 and annular flange 24 ', make pump shaft with in Figure 12 and Figure 13 not
The joining coupling of drive shaft of the motor 20 illustrated and local has been not shown equally, the group that is positioned on head portion 14
Part can be by the intermediate space between the contact pin 78 constituting structural member 76 by the most close.
The fixing of motor cabinet of centrifugal pump as shown in Figure 12 and Figure 13 particularly can be seen clearly in fig. 13.In order to solid
Determining motor cabinet, on wall portion 16 ', diameter is opposed to and almost section 26 ' at ring-type element 24 ' is embedded into wall portion each other
Below the region that part 16 ' is internal, it is provided with the penetrating part 82 of two rectangles.Penetrating part 82 is respectively used to receive retaining element
84.Retaining element 84 is respectively provided with: the matrix 86 that rectangular cross-sectional facial contour is consistent with penetrating part 82, this matrix is from wall portion
The outside of 16 ' is embedded into the inside of wall portion 16 ' by penetrating part 82；With end section 88, this end section stretches out matrix
The cross-sectional profiles of 86 also abuts on the lateral surface of wall portion 16 '.Screwed hole 90 extends respectively through retaining element 84
Matrix 86, in the retaining element 84 installation site on wall portion 16 ', this screwed hole is parallel to the axis X of centrifugal pump
Orientation.With the screwed hole 90 position in the retaining element 84 installation site on wall portion 16 ' accordingly, at loop method
Blue 24 ' are provided with two through holes 92.Through hole 92 is respectively used to receive nut bolt 94, and this nut bolt is screwed into fixing
In the screwed hole 90 of element 84, thus motor cabinet is fixed on wall portion 16 '.
The centrifugal pump that figure 14 illustrates substantially is consistent with the centrifugal pump shown in Figure 12 and Figure 13, their difference it
Place is only that motor cabinet fixing on wall portion 16 '.This fixing by making annular flange 24 ' and wall portion 16 such as
Being welded to connect in lower region realizes: in this region, and section 26 ' is embedded in the inside of wall portion 6 '.
The centrifugal pump that figure 15 illustrates is substantially based on the centrifugal pump shown in Fig. 1-Figure 11, their difference
It is only that the design of motor cabinet.This motor cabinet has annular flange 24 ", this annular flange be centrifuged as Figure 1-Figure 11
The annular flange 24 of pump the difference is that only section 28 " axial dimension.At section 28 " wall portion dorsad 16 flat
Smooth side is provided with mounting flange 80 '.Mounting flange 80 ' is designed to the fixing motor 20 with bigger companion flange 96,
And the periphery of circumferential portion 16 is extended radially beyond for this.In the region of this periphery extending beyond circumferential portion 16, fixing
Flange 80 ' is supported on multiple ribs 98, and this ribs extends radially on the periphery of annular flange 24 " section 28 ".
Claims (13)
1. a centrifugal multistage pump multiple centrifugal pump, has: base section (2)；Top section (14)；Make described base section (2) and described top
The wall portion (16,16 ') that portion's part (14) connects, described wall portion surrounds pump stage on the outer periphery；And it is connected to described
Motor cabinet on top section (14), described motor cabinet is used for receiving the described centrifugal pump motor (20) of driving, and its feature exists
In, described wall portion (16,16 ') in axial direction extends beyond described top section (14) and is connected with described motor cabinet.
Centrifugal pump the most according to claim 1, it is characterised in that described wall portion (16,16 ') is made up of pipe, described
Top section (14) is combined, be preferably welded in the tube.
3. according to centrifugal pump in any one of the preceding claims wherein, it is characterised in that described motor cabinet has annular flange
(24,24 '), what described annular flange was arranged on described wall portion (16,16 ') extends beyond described top section (14)
On the end of section (18,18 ').
Centrifugal pump the most according to claim 3, it is characterised in that described annular flange (24,24 ') is configured to convex shoulder shape
, and there is the section (26,26 ') being embedded in described wall portion (16,16 ') inside and lie in described wall portion
Section (28,28 ') on the end of (16,16 ').
5. according to the centrifugal pump according to any one of claim 3 or 4, it is characterised in that described annular flange (24) is designed
For fixing described motor (20).
Centrifugal pump the most according to claim 5, it is characterised in that described annular flange (24) is designed to fixing difference
Motor (20).
7. according to the centrifugal pump according to any one of claim 3 or 4, it is characterised in that at the upper structure of described annular flange (24 ')
Make in axial direction prominent appendix (76), the end of the most described annular flange (24 ') of described appendix sets
It is equipped with the mounting flange (80) for described motor (20).
8. according to centrifugal pump in any one of the preceding claims wherein, it is characterised in that prolonging of described wall portion (16)
Stretch at least one window of the upper structure of the section (18) beyond described top section (14) (34).
9. according to centrifugal pump in any one of the preceding claims wherein, it is characterised in that prolonging of described wall portion (16)
Stretching two windows (34) of upper structure of the section (18) beyond described top section (14), described window is arranged as follows: i.e., energy
Enough come close to the shaft seal (36) making pump shaft be sealed relative to described top section (14) by described window (34) and
At least one of described centrifugal pump is arranged on the air bleeding valve (38) on described top section (14).
10. according to centrifugal pump in any one of the preceding claims wherein, it is characterised in that described top section (14) is designed
For the deep draw parts being preferably made of stainless steel.
11. according to centrifugal pump in any one of the preceding claims wherein, it is characterised in that described wall portion (16,16 ') leads to
Cross clamping ring (52) upper clamped at described base section (2).
12. centrifugal pumps according to claim 8, it is characterised in that described clamping ring (52) is designed to circumferentially direction
On be separated into multiple ring segment (54).
13. centrifugal pumps according to claim 9, it is characterised in that the ring segment (54) of described clamping ring (52) is each other
It is connected with described base section (2) screw in the case of connection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15164219.6A EP3085961B1 (en) | 2015-04-20 | 2015-04-20 | Multi-stage radial pump |
| EP15164219 | 2015-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106065861A true CN106065861A (en) | 2016-11-02 |
Family
ID=52997297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610247904.3A Pending CN106065861A (en) | 2015-04-20 | 2016-04-20 | Centrifugal multistage pump multiple centrifugal pump |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20160305445A1 (en) |
| EP (1) | EP3085961B1 (en) |
| CN (1) | CN106065861A (en) |
| RU (1) | RU2637342C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3434909B1 (en) * | 2017-07-25 | 2023-09-27 | CIRCOR Pumps North America, LLC | Pump casing with integral support flange and suction flange |
| WO2019153005A1 (en) * | 2018-02-05 | 2019-08-08 | Weir Slurry Group, Inc. | Tie-rod frame plate for centrifugal pump |
| DE102021005120A1 (en) * | 2020-10-16 | 2022-04-21 | KSB SE & Co. KGaA | Lantern with thermal break |
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| US3126831A (en) * | 1964-03-31 | Motor-pump unit | ||
| EP0492575A1 (en) * | 1990-12-25 | 1992-07-01 | Ebara Corporation | Interstage casing for a pump made of sheet metal and method of manufacturing the same |
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- 2016-04-19 RU RU2016115045A patent/RU2637342C2/en active
- 2016-04-20 CN CN201610247904.3A patent/CN106065861A/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3085961A1 (en) | 2016-10-26 |
| RU2637342C2 (en) | 2017-12-04 |
| EP3085961B1 (en) | 2020-08-05 |
| RU2016115045A (en) | 2017-10-24 |
| US20160305445A1 (en) | 2016-10-20 |
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Effective date of abandoning: 20210330 |
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