CN201078352Y - Oil pump housing for electric locomotive voltage transformer - Google Patents
Oil pump housing for electric locomotive voltage transformer Download PDFInfo
- Publication number
- CN201078352Y CN201078352Y CNU2007200636830U CN200720063683U CN201078352Y CN 201078352 Y CN201078352 Y CN 201078352Y CN U2007200636830 U CNU2007200636830 U CN U2007200636830U CN 200720063683 U CN200720063683 U CN 200720063683U CN 201078352 Y CN201078352 Y CN 201078352Y
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- oil pump
- steel plate
- pump housing
- welds together
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- Expired - Fee Related
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Abstract
An electric locomotive transformer oil pump case body comprises a scroll case body, an inlet spout and an outlet spout; wherein, the inlet is forged and shaped by a profiled bar with mechanical treatment, and then is welded with a front cover plate of the scroll case body moulded by a steel plate, positioning in a center of the pump body; an external scroll case body is shaped after the steel plate welding, two faces of the case body are welded with the front cover plate and the back cover plate, the outlet is arranged on an upper end of the scroll case body, the scroll case outlet is a square cross section with the section inlet width of 40mm, the outlet is welded with an exit cone moulded by pressing a seamless steel tube and the exit cone is welded with an outlet flange shaped by the steel plate.
Description
Technical field
The utility model belongs to a kind of modular construction of transformer, is a kind of cooling oil pump housing of transformer specifically, is mainly used in the cooling oil pump of the locomotive transformer of railway high speed state.
Background technique
Transformer oil pump is applicable to forced oil-circulation cooling systems such as Large and Medium-sized Power Transformer, rectifier transformer, reactor, electric locomotive traction transformer.Transformer oil pump one is a kind of all-sealed structure, and the threephase asynchronous d-axis of built-in latent oil operation drives a centrifugal or axial--flow blading pump, is exclusively used in the fluid machinery of carrying the transformer insulation oil medium.Centrifugal transformer oil pump is applicable to transformer strong oil wind cooling device; Axial flow transformer oil pump (low lift, big flow) is applicable to transformer chip radiator.
Pressing the drive motor structure divides: the plain edition transformer oil pump of the special-purpose oil design of diving of the 1. traditional threephase asynchronous of domestic supporting employing at present; 2. the motor-driven disc type transformer oil pump of axial air-gap (disc type electric machine).The difference of two kinds of structures mainly is the drive motor difference, and function of use, installation form are identical.But because its distinctive axial magnetic pull effect of disc type pump, palpus in service is in time changed the bearing of wearing and tearing, causes the intense mechanical friction in case spline falls.The pump series products is to develop to high speed, efficient direction both at home and abroad at present.Suitable high-revolving transformer oil pump not only efficient height but also volume is little, good operation stability.Certainly, the slow-speed of revolution can improve the running life of bearing.But increase along with impeller diameter, equilibrium problem will be more outstanding, particularly unavoidable as conformity error on technology of its blade casting mold of vane pump, distortion angle, these all are the key factors that influences operation stability, do not do a good job in can reduce on the contrary the running life of bearing.The present motor-driven disc type transformer oil pump of a large amount of supporting employing axial air-gaps of domestic many units (disc type electric machine) (this oil pump is suitable to make low speed below 1000 rev/mins), this type of problem will be more outstanding.Because the axial magnetic pull of disc type electric machine is that very strong (it is exactly that axial magnetic pull by this rotation carries out the magneto-electric coupled rotor that makes and rotates, finish electric energy conversion), axial magnetic pull can make the wear extent gap of bearing be converted into the minimizing of air gap between stator and rotor, (disc type electric machine is very suitable for making the brake motor: brake block is installed between stator and rotor until the strong friction of stator and rotor iron and iron, the energising brake, dead electricity rotates freely).So still have many problems to need to solve for transformer oil pump, especially along with the continuous speed-raising of China railways, how to improve cooling effectiveness for locomotive transformer when the fast state, guarantee that the normal operation of locomotive is vital.
Chinese patent (patent No. is CN95232472.5, and name is called " high-speed and energy-saving transformer oil pump ") discloses a kind of improvement of high-speed and energy-saving transformer oil pump structure.The utility model comprises centrifugal oil pump, has impeller in the centrifugal oil pump, and its structure outline is that the import laying angle of the blade of impeller is 20 °～26 °, and the inlet side of the blade of impeller is 28 °～36 ° with the inclination angle of the axis of impeller.
Chinese patent (patent No. is CN03210998.9, and name is called " axial flow transformer oil pump ") discloses another kind of transformer oil pump, belongs to big-and-middle-sized transformer cooling system oil pump.This series Oil pump electrical machinery directly embeds assembling in the pump case, its rotor and the impeller formation rotor part that is integrated, and motor stator and pump-foot connect together, the formation stator component.
But existing power locomotive transformer oil pump ubiquity oil pump volume is big, pump housing seepage, insulation class is low, rate of fault is high, working life is short deficiency, therefore necessary this is improved.
The model utility content
The purpose of this utility model is: at the deficiency of existing electric locomotive transformer with oil pump, develop that a kind of oil pump volume is littler, pump housing ne-leakage, rate of fault are low, the electric locomotive transformer oil pump case of long service life.
The purpose of this utility model is achieved through the following technical solutions: a kind of electric locomotive transformer oil pump case.Oil pump body comprises volute body, inlet mouth and outlet mouth, and inlet carries out machining after adopting the shaped steel forging forming, welds together with volute body front shroud by steel plate machine shaping again, is positioned at the center portion of the pump housing; The outer spiral casing body also is by steel plate welding back machine shaping, the housing two sides welds together with front shroud and back shroud respectively, and the upper end at volute body is provided with outlet, the volute outlet is square cross-section, the section throat width is 40mm, outlet welds together with an exit cone by seamless steel pipe compression moulding, exit cone welds together with the outlet(discharge) flange of steel plate machine shaping again, and the initial section of exit cone from pump housing importer to, be rotated counterclockwise 15 °, and the outlet(discharge) flange center has been moved on on the pump housing vertical center line from tangent direction.
Advantage of the present utility model is: adopt housing integral solder structure, greatly reduce the weight of oil pump case, and owing to all be to adopt section bar to make, so can guarantee the uniformity of each several part material, the housing leakage problems can not appear, effectively solve the problem of former transformer oil pump cast iron pump body seepage oil, and dwindle the oil pump volume and reduce the oil pump own wt.
Description of drawings
Fig. 1 is an embodiment's of the utility model a structural representation;
Fig. 2 is an embodiment's of the utility model a texture edge schematic representation;
Fig. 3 is an embodiment's of the utility model a pump housing export structure enlarged diagram.
Embodiment
Accompanying drawing has provided embodiment of the present utility model, and the utility model will be further described below in conjunction with embodiment.
Embodiment one
From accompanying drawing as can be seen, the utility model is a kind of electric locomotive transformer oil pump case.Comprise volute body 1, inlet mouth 2 and outlet mouth 3, intake section 7 is machined into type after adopting the Q235A forgings molded, welds together with volute body 1 front shroud 4 by steel plate machine shaping again, is positioned at the center portion of the pump housing; Outer spiral casing body 1 also is by steel plate welding back machine shaping, outer spiral casing body 1 two sides welds together with front shroud 4 and back shroud 5 respectively, and be provided with outlet 8 in the upper end of volute body 1, volute outlet 8 is a square cross-section, the section throat width is 40mm, outlet 8 and one exit cone 6 by seamless steel pipe compression moulding welds together, exit cone 6 welds together with the outlet(discharge) flange 9 of steel plate machine shaping again, and the initial section of exit cone 6 from pump housing importer to, be rotated counterclockwise 15 °, and the outlet(discharge) flange center has been moved on on the pump housing vertical center line from tangent direction.
Claims (3)
1. electric locomotive transformer oil pump case, comprise volute body, inlet mouth and outlet mouth, it is characterized in that: inlet carries out machining after adopting the shaped steel forging forming, welds together with volute body front shroud by steel plate machine shaping again, is positioned at the center portion of the pump housing; The outer spiral casing body also is by steel plate welding back machine shaping, the housing two sides welds together with front shroud and back shroud respectively, and the upper end at volute body is provided with outlet, outlet welds together with an exit cone by seamless steel pipe compression moulding, and exit cone welds together with the outlet(discharge) flange of steel plate machine shaping again.
2. electric locomotive transformer oil pump case as claimed in claim 1 is characterized in that: described volute outlet is square cross-section, and the section throat width is 40mm.
3. demonstrating model as claimed in claim 1 or 2 is characterized in that: the initial section of described exit cone from pump housing importer to, be rotated counterclockwise 15 °, and the outlet(discharge) flange center moved on on the pump housing vertical center line from tangent direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200636830U CN201078352Y (en) | 2007-06-29 | 2007-06-29 | Oil pump housing for electric locomotive voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200636830U CN201078352Y (en) | 2007-06-29 | 2007-06-29 | Oil pump housing for electric locomotive voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201078352Y true CN201078352Y (en) | 2008-06-25 |
Family
ID=39570413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200636830U Expired - Fee Related CN201078352Y (en) | 2007-06-29 | 2007-06-29 | Oil pump housing for electric locomotive voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201078352Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103380302A (en) * | 2011-02-08 | 2013-10-30 | 大陆汽车有限责任公司 | Oil pump |
| CN109531070A (en) * | 2018-12-19 | 2019-03-29 | 王祥 | The processing method of steel-pipe welding formula diving pump case |
| CN110714939A (en) * | 2019-10-28 | 2020-01-21 | 襄阳五二五泵业有限公司 | Narrow-runner pump body machining method |
-
2007
- 2007-06-29 CN CNU2007200636830U patent/CN201078352Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103380302A (en) * | 2011-02-08 | 2013-10-30 | 大陆汽车有限责任公司 | Oil pump |
| CN103380302B (en) * | 2011-02-08 | 2017-05-03 | 大陆汽车有限责任公司 | Oil pump |
| US10450909B2 (en) | 2011-02-08 | 2019-10-22 | Continental Automotive Gmbh | Oil pump |
| CN109531070A (en) * | 2018-12-19 | 2019-03-29 | 王祥 | The processing method of steel-pipe welding formula diving pump case |
| CN110714939A (en) * | 2019-10-28 | 2020-01-21 | 襄阳五二五泵业有限公司 | Narrow-runner pump body machining method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080625 |