CN206834862U - Canned motor pump motor rotor retaining ring structure - Google Patents
Canned motor pump motor rotor retaining ring structure Download PDFInfo
- Publication number
- CN206834862U CN206834862U CN201720596762.1U CN201720596762U CN206834862U CN 206834862 U CN206834862 U CN 206834862U CN 201720596762 U CN201720596762 U CN 201720596762U CN 206834862 U CN206834862 U CN 206834862U
- Authority
- CN
- China
- Prior art keywords
- rotor
- end bell
- rotor end
- rotating shaft
- retaining ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Motor Or Generator Frames (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
It the utility model is related to canned motor pump motor rotor retaining ring structure, electric machine rotor iron core (1) both ends rotor bushing retaining ring (2), rotor end bell (2) coordinates with rotor core (1) for gap, housing (5) is fitted in rotor core (1) and rotor end bell (2), circumferential welded seam (4) is carried between rotor end bell (2) and rotating shaft (3), rotor end bell (2) is with being rotor end bell flexible leg (6) at rotating shaft (3) welding cooperation.The utility model, which effectively realizes, eliminates the problem of rotor end bell and rotating shaft commissure are by cross shear, and condition is provided for the exploitation of high power shielding pump motor.The utility model solves the problems, such as rotor end bell with the transverse direction of circumferential welded seam in rotating shaft by shearing, it ensure that the feature of the closed reliability of rotor and 60 years service life, by the selection of the rotor end bell flexible leg of prioritization scheme, rotor end bell is set finally to realize the sealing to rotor core end and the function of support housing.
Description
Technical field
It the utility model is related to a kind of canned motor pump motor rotor retaining ring structure.
Background technology
Shielded motor rotor and impeller of pump share an axle, be placed in high temperature, high pressure reactor coolant in.Shielding
There is the fluid isolation that one layer of very thin housing transports pump outside pump motor rotor core, to protect electric machine rotor iron core not
By fluid etch.Shielding mantle cavity communicates with pump chamber, subjects the system pressure of fluid, housing by electric machine structure due to being limited
With the influence of electromagnetism, it is necessary to very thin (generally in 0.7mm or so) of design, thus the system pressure of high pressure can not be born, back
Need to support.Housing is divided into two parts of rotor punching and rotor end bell in the support of electric machine rotor iron core section.Wherein punching
Part is by the silicon steel sheet group that laminates into end is fixed with tooth support；The support of guard ring portions by high intensity the material of alloy 600
Rotor end bell that matter is processed into is born.
Due to consideration that rotor and the public rotating shaft of impeller when shielded motor designs, and consider the rigidity of rotating shaft
And the characteristic such as magnetic property, the stainless steel of martensite 403 is selected as rotating shaft material.And mainly consider it when rotor end bell designs
Protect rotor core internals and support the effect of housing, and bear the HTHP in motor cavity, therefore select alloy
600 materials.Rotor end bell and rotating shaft are welded together by circumferential welded seam, and rotor core is sealed into an entirety, makes motor
All parts are isolated with the primary cooling water in motor in rotor core, to ensure that rotor core does not weather.
At present, the retaining ring structure in shield electric machine is similar to hollow " cake ", is coordinated by hot jacket and welding with rotating shaft
Together, play a part of protecting rotor core and support housing.But traditional retaining ring is with rotating shaft ring when welding, due to
The difference of retaining ring material and rotating shaft material, thermal expansion amount when being affected by temperature is also different, causes the Transverse Shear to circumferential welded seam
Cut.By the weld seam of shear stress, its fatigue strength and service life are severely impacted.Canned motor pump in the utility model is electronic
Machine rotor retaining ring structure, the stressing conditions at circumferential welded seam are effectively improved, to shield electrodynamic pump non-maintaining use in 60 years
Life-span provides guarantee.
The content of the invention：
The purpose of this utility model is to provide a kind of canned motor pump motor rotor retaining ring structure, and the retaining ring structure both can guarantee that
The intensity of housing is supported, and can forms the sealing to rotor core end.The technical solution of the utility model is：One kind shielding
Between pump motor rotor end bell structure, the both ends rotor bushing retaining ring 2 of electric machine rotor iron core 1, rotor end bell 2 and rotor core 1 are
Gap coordinates, and housing 5 is fitted in rotor core 1 and rotor end bell 2, and circumferential welded seam 4 is carried between rotor end bell 2 and rotating shaft 3,
It is rotor end bell flexible leg 6 that rotor end bell 2 is welded at cooperation with rotating shaft 3.
Described rotor end bell flexible leg 6 is：Welded away from the end face in rotor core direction close to rotor end bell 2 and rotating shaft 3
Connect position and process first annular groove 7, rotor end bell internal diameter processes the second annular groove 8 close to the position of circumferential welded seam.
The utility model mainly designs and manufactures a kind of canned motor pump motor rotor retaining ring structure.Set according to shield electric machine
The rotor core size and its stress condition of meter, its structure is as shown in Figure 1.Rotor end bell is designed as with flexible leg type structure, and
Coordinated by welding in the end of rotor core, with the sealing for keeping the continuous support to housing and realizing rotor core, such as
Shown in Fig. 3.
The advantages of the utility model：Rotor end bell and rotor shielding sleeve constitute the pressure boundary around rotor assembling, turn
Sub- retaining ring is defined as safety related component., it is necessary to consider to protect under design pressure, hydrostatic pressing operating mode in the design of rotor end bell
The primary stress of ring and because the reaction to hydraulic pressure that rotation is formed.Particularly in the design of rotor end bell flexible leg, need
Consider and optimize primary stress and fatigue resistance at rotor end bell flexible leg.In the design of rotor end bell, it is contemplated that in electricity
In machine operation, the high stress areas of rotor end bell be located at rotor end bell flexible leg, seal-weld and with rotor core cooperation
Relatively thin position, and primary stress intensity and the flexibility weighed at rotor end bell flexible leg.Rotor end bell flexible leg is considered as
It is " the sealing welder of particular design ".When rotor end bell welds with rotor core sealing, due to rotor end bell and the material of rotating shaft
Difference, thermal coefficient of expansion is also different, and the thermal coefficient of expansion of rotor end bell is 1.6, and the thermal coefficient of expansion of rotating shaft is 1.1, identical
Temperature under the influence of, the thermal expansion amount of rotor end bell and rotating shaft differs greatly, and this will cause in rotor end bell and rotating shaft weld
Circumferential welded seam bear horizontal shearing force.Its 60 years service life and operating steady will be influenceed by the weld seam of shearing force
It is qualitative.The design concept of rotor end bell flexible leg：Rotor end bell is considered simultaneously by primary cooling water temperature in motor cavity
In the case of influenceing with the influence of heat transfer above impeller, produced at circumferential welded seam because the swell increment of two kinds of unlike materials is different
Raw cross shear, eliminated by the elastic-plastic deformation of rotor end bell flexible leg, to ensure the integrality of circumferential welded seam and work(
Energy property, and meet the requirement of 60 years service life.By the pliability and stress amplitude and tired that consider rotor end bell flexible leg
Labor utilization rate, the final depth and thickness for determining rotor end bell flexible leg, finally solves and eliminates on circumferential welded seam due to two kinds
The thermal expansion amount of material is different and the technical barrier of caused transverse shearing stress.
In rotor end bell structure design, away from the end face in rotor core direction close to rotor end bell and rotating shaft welding position
First annular groove is processed, rotor end bell internal diameter processes the second annular groove close to the position of circumferential welded seam.By being protected in rotor
The design of annular groove at two on ring, rotor end bell is set to be cut with rotating shaft weld thin, defined herein as " rotor end bell is flexible
Leg ".The design of rotor end bell flexible leg structure, is avoided that in motor operation, due to primary cooling water temperature and pump top heat
Transmit circumferential welded seam on countershaft by influence of shear force, solve the transverse direction of circumferential welded seam between shield electric machine rotating shaft and rotor end bell
The technical barrier of shearing.
Brief description of the drawings
Fig. 1 rotor banding retaining ring core construction schematic diagrames
Fig. 2 rotor end bell schematic diagrames
Fig. 3 rotor end bell profiles
Fig. 4 opens the rotor end bell flexible leg partial enlarged drawing formed at two after groove
Embodiment
It is rotor banding retaining ring core construction of the present utility model as shown in Figure 1, a kind of canned motor pump motor rotor retaining ring of electricity
Structure, the both ends rotor bushing retaining ring 2 of electric machine rotor iron core 1, rotor end bell 2 as shown in Figure 2 coordinate with rotor core 1 for gap,
Housing 5 is fitted in rotor core 1 and rotor end bell 2, as shown in figure 3, being welded between rotor end bell 2 and rotating shaft 3 with ring
Seam 4, it is rotor end bell flexible leg 6 that rotor end bell 2 is welded at cooperation with rotating shaft 3.
As shown in figure 4, described rotor end bell flexible leg 6 is：Away from the end face in rotor core direction close to rotor end bell 2
First annular groove 7 is processed with the welding position of rotating shaft 3, rotor end bell internal diameter is recessed close to the annular of the position of circumferential welded seam processing second
Groove 8.
Stress factors when welding in view of rotor end bell 2 and rotating shaft 3, weld to enter at cooperation in rotor end bell 2 and rotating shaft 3
The thin processing of cutting that row opens groove at two forms rotor end bell flexible leg 6, hot swollen due to two kinds of materials on circumferential welded seam 4 to eliminate
Bulk is different and caused transverse shearing stress.
Rotor end bell is arranged on the end of rotor core, and rotor shielding sleeve is fitted in rotor core and rotor end bell, turns
Sub- retaining ring and rotor shielding sleeve constitute the pressure boundary around rotor assembling, subject the pressure of motor cavity.Rotor end bell
Play a part of canned rotor core end and support housing.
Needed according to the rotor core structure and installation, devise rotor end bell structure such as Fig. 2 and Fig. 3 in detail.Consider
Under to the high rigidity of rotor end bell material, design pressure, hydrostatic pressing operating mode the primary stress of retaining ring and because rotation formed
Reaction to hydraulic pressure, to being produced on rotor end bell on the outside of heavily stressed rotor end bell flexible leg, seal-weld and connection ring
Relatively thin region is designed, and its stress is met the requirement of membrane stress allowable and the functional requirement of electric machine iron core.
According to the requirement of Fig. 1 rotor end bell sizes designed and design specification, stress analysis calculating and Stress Map are utilized
Calculate, have selected the rotor end bell material for meeting design specification and requirement, complete rotor end bell flexible leg, seal-weld with
And on the outside of connection ring thinner part design.In rotor end bell structure design, by away from the end face in rotor core direction
On, an annular groove is being processed close to rotor end bell and rotating shaft welding position, and in rotor end bell internal diameter close to circumferential welded seam
Position also process annular groove at one.By the design of annular groove on rotor end bell two, make rotor end bell and rotating shaft
Weld be able to cut it is thin, defined herein as " rotor end bell flexible leg ".The flexible leg of rotor end bell can be regarded as " particular design
Sealing welder ".Can use simple elastic-plastic analysis, and the primary stress intensity weighed at rotor end bell flexible leg and
Flexibility.When rotor end bell and rotor core sealing are welded, because rotor end bell is different from the material of rotating shaft, thermal coefficient of expansion is not yet
Together, the thermal coefficient of expansion of rotor end bell is 1.6, and the thermal coefficient of expansion of rotating shaft is 1.1, under the influence of identical temperature, rotor shield
Ring and the thermal expansion amount of rotating shaft are differed greatly, and horizontal cut is born on this circumferential welded seam that rotor end bell will be caused to be welded with rotating shaft
Shear force.Its 60 years service life and operating stability will be influenceed by the weld seam of shearing force.Rotor end bell flexible leg
Design, it is ring weldering in the case of considering that rotor end bell is influenceed by heat transfer above primary cooling water in motor cavity and impeller
The thermal expansion amount of two kinds of unlike materials at seam is widely different, so as to be that circumferential welded seam bears pullling for cross shear, ring
Cross shear on weld seam is eliminated by the structure and its elastic-plastic deformation of rotor end bell flexible leg, to ensure circumferential welded seam
Integrality and feature, and meet the requirement of 60 years service life.By the pliability and stress that consider rotor end bell flexible leg
Amplitude and tired utilization rate, the depth and thickness of rotor end bell flexible leg are finally determined, realize the structure function of rotor end bell
Design.
Claims (2)
1. a kind of canned motor pump motor rotor retaining ring structure, it is characterized in that：Electric machine rotor iron core (1) both ends rotor bushing retaining ring
(2), rotor end bell (2) coordinates with rotor core (1) for gap, and housing (5) is fitted in rotor core (1) and rotor end bell
(2) on, circumferential welded seam (4) is carried between rotor end bell (2) and rotating shaft (3), rotor end bell (2) is welded at cooperation with rotating shaft (3)
For rotor end bell flexible leg (6).
2. a kind of canned motor pump motor rotor retaining ring structure according to claim 1, it is characterized in that：Described rotor end bell
Flexible leg (6) is：Away from the end face in rotor core direction the first ring is processed close to rotor end bell (2) and rotating shaft (3) welding position
Connected in star (7), rotor end bell internal diameter process the second annular groove (8) close to the position of circumferential welded seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720596762.1U CN206834862U (en) | 2017-05-26 | 2017-05-26 | Canned motor pump motor rotor retaining ring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720596762.1U CN206834862U (en) | 2017-05-26 | 2017-05-26 | Canned motor pump motor rotor retaining ring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206834862U true CN206834862U (en) | 2018-01-02 |
Family
ID=60773498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720596762.1U Active CN206834862U (en) | 2017-05-26 | 2017-05-26 | Canned motor pump motor rotor retaining ring structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206834862U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040062A (en) * | 2017-05-26 | 2017-08-11 | 哈尔滨电气动力装备有限公司 | Canned motor pump motor rotor retaining ring structure |
-
2017
- 2017-05-26 CN CN201720596762.1U patent/CN206834862U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040062A (en) * | 2017-05-26 | 2017-08-11 | 哈尔滨电气动力装备有限公司 | Canned motor pump motor rotor retaining ring structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104616706B (en) | A kind of pressure-resistant shell component of integration | |
| CN206834862U (en) | Canned motor pump motor rotor retaining ring structure | |
| US20040114705A1 (en) | Nuclear reactor submerged high temperature spool pump | |
| CN104658618A (en) | Nickel-based alloy pressure-resistant shell and implementation method thereof | |
| CN105281495A (en) | Cooling jacket for an electric machine and method of assembling the jacket and an electric machine equipped with the cooling jacket | |
| CN101269432A (en) | Dissimilar metal welding method for WCB steel valve and WB36 steel pipeline | |
| CN102592689A (en) | Composite material heating block, and manufacturing method and application thereof | |
| CN101935724A (en) | Protection device of water inlet/outlet pipe of cooling wall | |
| CN113231788A (en) | On-site repairing method for sealing surface of valve seat of in-service safety valve | |
| EP2339215B1 (en) | Flange fastening section and cooling system of flange fastening section | |
| CN104344120B (en) | Sealing and connecting device and method thereof for high-temperature molten salt | |
| CN103357993A (en) | Welding technology for dissimilar steels of 12 Cr1Mov and 12X18H12T | |
| CN107040062A (en) | Canned motor pump motor rotor retaining ring structure | |
| CN104227187B (en) | Large-scale versatile spindle flange welding method | |
| CN102933327A (en) | Double-walled pipe with a gap, and manufacturing method therefor | |
| CN209088651U (en) | Canned motor pump motor rotor mouse cage winding structure | |
| CN103361473B (en) | Thermal treatment method for preventing stainless steel from being sensitized in water chamber of high-pressure heater | |
| JP3725114B2 (en) | Corrugated cooling panels for fusion reactors. | |
| CN103850985B (en) | A kind of blower fan using casing heat tracing and sealing cushion gas heating | |
| CN112548277A (en) | Weld joint interface structure optimization method for dissimilar steel welded joint of thermal power plant | |
| CN104077470B (en) | Supertension tubular type reactor end portion structure magnitude of interference method for designing based on risk | |
| CN202601221U (en) | Ceramic outgoing line sealing structure | |
| JP2010007614A (en) | Steam turbine rotor and method for controlling temperature of steam turbine rotor | |
| CN201864735U (en) | Protecting device for water inlet-outlet pipe on cooling wall | |
| CN207364113U (en) | Canned motor pump motor rotor axle journal tube-in-tube structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |