CN217682288U - Horizontal split double-suction pump structure capable of generating unbalanced axial force - Google Patents
Horizontal split double-suction pump structure capable of generating unbalanced axial force Download PDFInfo
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- CN217682288U CN217682288U CN202220674316.9U CN202220674316U CN217682288U CN 217682288 U CN217682288 U CN 217682288U CN 202220674316 U CN202220674316 U CN 202220674316U CN 217682288 U CN217682288 U CN 217682288U
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- sealing ring
- drive end
- pump body
- impeller
- axial force
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Abstract
The utility model relates to a horizontal middle-open type double-suction pump structure generating unbalanced axial force, which comprises a non-drive end sealing ring and a drive end sealing ring; the non-drive end sealing ring comprises a non-drive end pump body sealing ring and a non-drive end impeller sealing ring, and the inner diameter of the non-drive end pump body sealing ring is matched with the outer diameter of the non-drive end impeller sealing ring; the drive end sealing ring comprises a drive end pump body sealing ring and a drive end impeller sealing ring, and the inner diameter of the drive end pump body sealing ring is matched with the outer diameter of the drive end impeller sealing ring; the pump bodies, the pump covers and the impellers of the non-driving end and the driving end are completely symmetrical in structure, and the inner diameter of the pump body sealing ring of the driving end is larger than that of the pump body sealing ring of the non-driving end. The utility model discloses in the use, only need to change pump body sealing ring and impeller sealing ring, the size that axial force just can be adjusted according to actual need to the internal diameter difference of adjustment pump body sealing ring. The utility model discloses simple and practical, convertibility are strong, reduce the alternating load influence, open double entry pump operating stability in improving the level.
Description
Technical Field
The utility model relates to an open double entry pump structure in level, concretely relates to only need change pump body sealing ring and impeller sealing ring, open double entry pump structure in level that the internal diameter of adjustment pump body sealing ring is poor just can adjust the size of axial force according to actual need.
Background
The horizontal split double-suction pump has the characteristics of high efficiency, energy conservation, compact structure, convenient maintenance and the like, and is widely applied to industries such as building water supply, cooling water circulation, power plants, steel plants, hydraulic engineering and the like.
The double-suction impeller is actually formed by combining two single-suction impellers which are back to back, and the two single-suction impellers are completely symmetrical in structure and balanced in axial force, so that the double-suction pump is generally considered to have good operation stability. However, in actual operation, because the pressure fields at the two sides of the double-suction impeller are not uniformly distributed, a certain alternating load is generated, and the influence of the alternating load causes the problems of shaft breakage, abrasion of a sealing ring and the like of the double-suction pump, so that the normal operation of the whole pump set is influenced. In order to reduce the influence of alternating load, ensure the operation stability of the pump group and optimize the structure of the double-suction pump, the double-suction pump has important significance.
SUMMERY OF THE UTILITY MODEL
To the above problem, the main object of the utility model is to provide a only need to change pump body sealing ring and impeller sealing ring, open double entry pump structure in the level that the internal diameter of adjustment pump body sealing ring is poor just can adjust the size of axial force according to actual need.
The utility model discloses a solve above-mentioned technical problem through following technical scheme: a horizontal split double suction pump structure generating unbalanced axial force, comprising: a non-drive end seal ring and a drive end seal ring.
The non-drive end sealing ring comprises a non-drive end pump body sealing ring and a non-drive end impeller sealing ring, and the inner diameter of the non-drive end pump body sealing ring is matched with the outer diameter of the non-drive end impeller sealing ring.
The drive end sealing ring comprises a drive end pump body sealing ring and a drive end impeller sealing ring, and the inner diameter of the drive end pump body sealing ring is matched with the outer diameter of the drive end impeller sealing ring.
The pump bodies, the pump covers and the impellers of the non-driving end and the driving end are completely symmetrical in structure, and the inner diameter of the sealing ring of the pump body of the driving end is larger than that of the sealing ring of the pump body of the non-driving end.
In a specific embodiment of the present invention, the non-drive-end pump body sealing ring includes a non-drive-end pump body sealing ring body and a non-drive-end protruding ring provided on a surface combined with the pump body.
In a specific embodiment of the present invention, the non-drive-end pump body sealing ring body and the non-drive-end bulge ring are integrally formed.
In the specific embodiment of the present invention, the height range of the non-driving end protruding ring is: 5-10mm.
In a specific embodiment of the present invention, the drive end pump body sealing ring includes a drive end pump body sealing ring body and a drive end protruding ring provided on a face combined with the pump body.
In the specific embodiment of the utility model, drive end pump body sealing ring body and drive end bulge loop integrated into one piece.
In the specific embodiment of the present invention, the height range of the protruding ring of the driving end is: 5-10mm.
In a specific embodiment of the present invention, the non-drive-end impeller seal ring is coupled to the impeller by screws.
In a specific embodiment of the present invention, the drive-end impeller seal ring is connected to the impeller by a screw.
The utility model discloses an actively advance the effect and lie in: the utility model provides an open double entry pump structure in production unbalanced axial force's level has following advantage: the utility model discloses in the use, only need to change pump body sealing ring and impeller sealing ring, the size that axial force just can be adjusted according to actual need to the internal diameter difference of adjustment pump body sealing ring. Make through the above design the utility model has the advantages of simple and practical, the replaceability is strong, reach and reduce the alternating load influence, open double entry pump operating stability's in the improvement level purpose.
Drawings
Fig. 1-1 is a cross-sectional view of a non-drive end pump body seal ring of the present invention.
Figures 1-2 are cross-sectional views of the non-drive end impeller seal ring of the present invention.
Fig. 2-1 is a cross-sectional view of the drive end pump body sealing ring of the present invention.
Fig. 2-2 is a cross-sectional view of the drive end impeller seal ring of the present invention.
Fig. 3 is a cross-sectional view of the assembly schematic of the present invention.
Fig. 4 is an enlarged schematic view of fig. 3 at M.
Fig. 5 is an enlarged schematic view of fig. 3 at N.
The utility model discloses the name that well reference numeral corresponds:
a non-drive end seal ring 100, a non-drive end pump body seal ring 101, a non-drive end impeller seal ring 102;
a drive end sealing ring 200, a drive end pump body sealing ring 201 and a drive end impeller sealing ring 202;
non-drive end bulge loop 300, drive end bulge loop 400, pump cover 500, impeller 600, pump body 700.
Detailed Description
The following provides a preferred embodiment of the present invention with reference to the accompanying drawings to explain the technical solutions of the present invention in detail.
Fig. 1-1 is a cross-sectional view of the non-drive end pump body sealing ring of the present invention, fig. 1-2 is a cross-sectional view of the non-drive end impeller sealing ring of the present invention, fig. 2-1 is a cross-sectional view of the drive end pump body sealing ring of the present invention, and fig. 2-2 is a cross-sectional view of the drive end impeller sealing ring of the present invention. As shown in the above figures: the utility model provides an open double entry pump structure in production unbalanced axial force's level includes: non-drive end seal ring 100 and drive end seal ring 200.
The non-drive end sealing ring 100 comprises a non-drive end pump body sealing ring 101 and a non-drive end impeller sealing ring 102, and the inner diameter of the non-drive end pump body sealing ring is matched with the outer diameter of the non-drive end impeller sealing ring; when the inner diameter of the non-drive-end pump body sealing ring 101 is adjusted, the outer diameter of the non-drive-end impeller sealing ring 102 is changed along with the adjustment.
The driving end sealing ring 200 comprises a driving end pump body sealing ring 201 and a driving end impeller sealing ring 202, and the inner diameter of the driving end pump body sealing ring is matched with the outer diameter of the driving end impeller sealing ring; when the inner diameter of the drive-end pump body sealing ring is adjusted, the outer diameter of the drive-end impeller sealing ring is changed along with the inner diameter of the drive-end pump body sealing ring.
The pump bodies, the pump covers and the impellers of the non-driving end and the driving end are completely symmetrical in structure, and the size and the direction of the axial force are controlled by adjusting the inner diameter difference of the sealing ring of the pump body of the non-driving end and the sealing ring of the pump body of the driving end;
the inner diameter of the drive-end pump body seal ring 201 is larger than the inner diameter of the non-drive-end pump body seal ring 101.
Fig. 3 is a sectional view of an assembly diagram of the present invention, fig. 4 is an enlarged diagram of a place M of fig. 3, and fig. 5 is an enlarged diagram of a place N of fig. 3.
The non-drive end pump body seal ring comprises a non-drive end pump body seal ring body and a non-drive end raised ring 300 arranged on the surface combined with the pump body.
In specific implementation process, non-drive end pump body sealing ring body and non-drive end protruding ring integrated into one piece, the height scope of non-drive end protruding ring is: 5-10mm, and the parameter range can be adjusted according to requirements in the specific implementation process.
The utility model provides a drive end pump body sealing ring include drive end pump body sealing ring body and with the pump body combine the face on the drive end bulge loop 400 that sets up. In specific implementation, drive end pump body sealing ring body and drive end protruding ring integrated into one piece, the high scope of drive end protruding ring is: 5-10mm, and in the specific implementation process, the parameter ranges can be adjusted as required.
The utility model provides a non-drive end impeller sealing ring links together through screw and impeller, and drive end impeller sealing ring links together through screw and impeller. In the embodiment of the present invention, other methods may be used to fix the two components together.
The utility model discloses the structure total symmetry of the pump body 700 in non-drive end and the drive end, pump cover 500 and impeller 600 controls the size and the direction of axial force through adjusting non-drive end pump body sealing ring internal diameter D1 (see fig. 1-1) and drive end pump body sealing ring internal diameter D3 (see fig. 2-1).
The inner diameter D3 of the drive end pump body sealing ring is larger than the inner diameter D1 of the non-drive end pump body sealing ring, the generated axial force is controlled to be 2% -10% of the static load axial component of the bearing by the difference, and the axial force in the range can ensure that the shaft is always in a pulled state and cannot be damaged due to too much stretching; the axial force direction is directed to the driving end, and the magnitude can be calculated by the following formula:
in the formula, H represents the pump lift m;
η h -the hydraulic efficiency of the pump;
n is the rotation speed of the pump, r/min;
rho-medium density, kg/m 3 ；
g-acceleration of gravity, m/s 2 ；
D1, the inner diameter of the pump body sealing ring of the non-driving end is mm;
d2, the inner diameter of the impeller sealing ring at the non-driving end is mm;
d3, the inner diameter of the sealing ring of the pump body at the driving end is mm;
d4, the inner diameter of the sealing ring of the impeller at the driving end is mm;
d is the outer diameter of the impeller, mm;
during the trial process of the horizontal middle-open type double-suction pump, only the pump body sealing ring and the impeller sealing ring need to be replaced, and the size of the axial force can be adjusted according to actual needs by adjusting the inner diameter difference of the pump body sealing ring.
Make through the above design the utility model has the advantages of simple and practical, the replaceability is strong, reach and reduce alternating load influence, improve open double entry pump operating stability's in the level purpose.
The foregoing shows and describes the basic principles and principal features of the invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (9)
1. The utility model provides a produce open double entry pump structure in level of unbalanced axial force which characterized in that: the horizontal split double suction pump structure generating unbalanced axial force comprises: a non-drive end seal ring and a drive end seal ring;
the non-drive end sealing ring comprises a non-drive end pump body sealing ring and a non-drive end impeller sealing ring, and the inner diameter of the non-drive end pump body sealing ring is matched with the outer diameter of the non-drive end impeller sealing ring;
the drive end sealing ring comprises a drive end pump body sealing ring and a drive end impeller sealing ring, and the inner diameter of the drive end pump body sealing ring is matched with the outer diameter of the drive end impeller sealing ring;
the pump body, the pump cover and the impeller of the non-driving end and the driving end are completely symmetrical in structure,
the inner diameter of the drive end pump body sealing ring is larger than that of the non-drive end pump body sealing ring.
2. The unbalanced axial force generating horizontal split double suction pump structure of claim 1, wherein: the non-drive end pump body sealing ring comprises a non-drive end pump body sealing ring body and a non-drive end bulge ring arranged on the surface combined with the pump body.
3. The unbalanced axial force generating horizontal split double suction pump structure of claim 1, wherein: the non-drive end pump body sealing ring body and the non-drive end bulge ring are integrally formed.
4. The unbalanced axial force generating horizontal split double suction pump structure of claim 1, wherein: the height range of the non-drive end raised ring is as follows: 5-10mm.
5. The unbalanced axial force generating horizontal split double suction pump structure of claim 1, wherein: the driving end pump body sealing ring comprises a driving end pump body sealing ring body and a driving end protruding ring arranged on the surface combined with the pump body.
6. The unbalanced axial force generating horizontal split double suction pump structure of claim 1, wherein: the driving end pump body sealing ring body and the driving end bulge ring are integrally formed.
7. The unbalanced axial force generating horizontal mid-open double suction pump structure of claim 1, wherein: the height range of the drive end raised ring is as follows: 5-10mm.
8. The unbalanced axial force generating horizontal split double suction pump structure of claim 1, wherein: the non-drive-end impeller seal ring is connected with the impeller through a screw.
9. The unbalanced axial force generating horizontal mid-open double suction pump structure of claim 1, wherein: the drive-end impeller seal ring is connected with the impeller through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220674316.9U CN217682288U (en) | 2022-03-25 | 2022-03-25 | Horizontal split double-suction pump structure capable of generating unbalanced axial force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220674316.9U CN217682288U (en) | 2022-03-25 | 2022-03-25 | Horizontal split double-suction pump structure capable of generating unbalanced axial force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217682288U true CN217682288U (en) | 2022-10-28 |
Family
ID=83731882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220674316.9U Active CN217682288U (en) | 2022-03-25 | 2022-03-25 | Horizontal split double-suction pump structure capable of generating unbalanced axial force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217682288U (en) |
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2022
- 2022-03-25 CN CN202220674316.9U patent/CN217682288U/en active Active
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