CN211397915U - Middle-open type pump body sealing ring - Google Patents
Middle-open type pump body sealing ring Download PDFInfo
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- CN211397915U CN211397915U CN201922271127.8U CN201922271127U CN211397915U CN 211397915 U CN211397915 U CN 211397915U CN 201922271127 U CN201922271127 U CN 201922271127U CN 211397915 U CN211397915 U CN 211397915U
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- wedge
- sealing ring
- ring
- pump body
- half ring
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Abstract
The utility model provides a well open pump body sealing ring, wholly separates along the axis for annular sealing ring main part, forms the upper half ring of sealing ring and lower half ring, sets up two sets of bellied wedge archs that make progress on two upper tangent planes of lower half ring respectively. Two groups of wedge-shaped grooves which are recessed inwards are respectively arranged on two lower sections of the upper half ring. The shape and the size of the wedge-shaped protrusion and the wedge-shaped recess are the same as those of the groove. When going up the semi-ring and merging into the sealing ring main part down at that time, the wedge arch can be arranged in the wedge recess and form seal structure. The upper half ring and the lower half ring are of a bilateral symmetry structure. The utility model discloses a wedge seal structure effectively solves the old structure that original pump body sealing ring leaned on the screw to close, has the characteristics of change convenience, not damaging the pump body, improves production efficiency and product quality.
Description
Technical Field
The utility model relates to a pump impeller technical field opens in multistage provides a sealing ring that pump impeller was used opens in multistage very much.
Background
The multi-stage split pump is an important centrifugal pump structure which conforms to the international standard API610 centrifugal pump for petroleum, heavy chemistry and natural gas industry, and the structural code is BB 3. The self-balancing impeller has the obvious advantages of quick and convenient maintenance, symmetrical impeller arrangement, self-balancing axial force and the like, so the self-balancing impeller is widely applied to oil pipelines, oil field water injection and petrochemical processes.
As shown in the attached figure 1 of the specification, the multi-stage axially split pump impeller is of a hot-assembly structure, and the structure causes that each impeller-rotating part needs to be subjected to flame heating in stages of small assembly, dynamic balance, test, impeller cutting, rotor dynamic balance, assembly, maintenance and the like of a pump working part, and then is detached step by step, so that static parts such as each pump body sealing ring, each lining and the like can be detached. Because the multistage pump progression is many, can reach 3 to 12 grades, every grade all has two pump body sealing rings, therefore change work load is big, and work efficiency is low moreover, and the dismouting all can cause unnecessary damage to pump work portion at every turn importantly.
As shown in the attached figure 2 of the specification, the traditional seal ring structure of the split pump body is in a two-half type, and the upper part and the lower part are combined together by bolts. Because the pump body sealing ring belongs to the precision fit and the positioning part, the screw required for closing is the precision fit screw, and the drilling is the reamed hole, so the processing and manufacturing difficulty is high. Because the width of the pump body sealing ring is usually very small, the requirement on the diameter of the screw is high, and the problems of poor connection strength and easy deformation can be caused. For small sealing rings, the nail structure cannot be made at all due to the limitation of width and diameter.
SUMMERY OF THE UTILITY MODEL
The utility model aims at designing into well open architecture with static parts such as pump body sealing ring and bush, the solution pump work portion that can be fine needs the problem of repeated heating dismouting.
The utility model particularly provides a well open pump body sealing ring wholly separates for annular sealing ring main part 1 along the axis, forms semi-ring 101 and lower semi-ring 102 on the sealing ring, sets up two sets of bellied wedge archs 2 that make progress on two last tangent planes of semi-ring 102 down respectively. Two groups of wedge-shaped grooves 3 which are recessed inwards are respectively arranged on two lower sections of the upper half ring 101. The shape and the size of the wedge-shaped groove 3 are the same as those of the wedge-shaped protrusion 2. When the upper half ring 101 and the lower half ring 102 are combined into the seal ring body 1, the wedge-shaped protrusion 2 can be placed in the wedge-shaped groove 3 to form a seal structure.
The utility model discloses a preparation method finishes all whole sizes finish machining of pump body sealing ring main part 1 earlier, and the hole leaves the machining allowance. The pump body sealing ring main body 1 is processed into an upper half ring 101 and a lower half ring 102 by a wire cutting method. The middle facet is processed into a wedge-shaped bulge 2 and a wedge-shaped groove 3 according to design requirements, so that the pump body sealing ring is integrally positioned in the diameter direction, and the positioning in the axis direction is realized by the wedge-shaped bulge 2 and the wedge-shaped groove 3 on the pump body sealing ring. The split of the upper half ring 101 and the lower half ring 102 is performed in the axial direction, not in the diameter direction of the conventional mid-open seal ring. And after the mid-parting line is cut, finishing the inner hole of the whole body of the main body 1, and after the machining is finished, making the pairing marks of the upper half ring 101 and the lower half ring 102, so that the part manufacturing is finished.
The utility model discloses preparation required precision: the diameter of the wire-cutting wire is 0.06 to 0.1 mm. The precision completely meets the requirement of the fit clearance of the pump body sealing ring.
The utility model discloses a wedge seal structure effectively solves the old structure that original pump body sealing ring leaned on the screw to close, has the characteristics of change convenience, not damaging the pump body, improves production efficiency and product quality.
The utility model discloses can be through size and the angle that changes the wedge median plane, realize accomplishing the not damaged change on the pump body sealing ring of multiple size, especially solved unable small-size sealing ring through the fix with screw and changed the problem.
The utility model has the characteristics of as follows:
1. the manufacturing process and the working procedure are simple, the manufacturing cost is saved, and the production efficiency is improved;
2. the assembly and the replacement are quick, simple and convenient, and the assembly and maintenance efficiency is improved;
3. the size and the angle of the wedge-shaped middle opening surface are changed, so that nondestructive replacement on pump body sealing rings with various sizes is realized, and the problem of replacement of small-size sealing rings which cannot be fixed through screws is particularly solved;
4. for the pump body sealing ring made of special materials, the problem that screws made of special materials are difficult to purchase is solved;
5. the problem of pump body sealing ring damage caused by screw deformation problem is avoided.
Drawings
The invention is described in further detail below with reference to the drawings in the specification:
FIG. 1 is a schematic view of a multi-stage split pump;
FIG. 2 is a schematic view of a prior art seal ring structure;
fig. 3 is a schematic view of the sealing ring structure of the present invention;
fig. 4 is a schematic view of the sealing ring structure of the present invention.
Description of the symbols of the drawings:
1, a main body, 101 upper half rings, 102 lower half rings, 2 wedge-shaped protrusions and 3 wedge-shaped grooves; 4-axis, 5-bushing, 6-impeller, 7-screw, 8-middle split, 9-mating mark, 10-wedge split.
Detailed Description
Example 1
The embodiment specifically provides a well open pump body sealing ring, and whole annular sealing ring main part 1 divides along the axis, forms sealing ring upper half 101 and lower half 102, sets up two sets of protruding wedge archs 2 that make progress on two tangent planes of lower half 102 respectively. Two groups of wedge-shaped grooves 3 which are recessed inwards are respectively arranged on two lower sections of the upper half ring 101. The shape and the size of the wedge-shaped groove 3 are the same as those of the wedge-shaped protrusion 2. When the upper half ring 101 and the lower half ring 102 are combined into the seal ring body 1, the wedge-shaped protrusion 2 can be placed in the wedge-shaped groove 3 to form a seal structure.
According to the preparation method of the embodiment, the whole body of the pump body sealing ring main body 1 is finished in finish machining in all dimensions, and machining allowance is reserved in an inner hole. The pump body sealing ring main body 1 is processed into an upper half ring 101 and a lower half ring 102 by a wire cutting method. The middle facet is processed into a wedge-shaped bulge 2 and a wedge-shaped groove 3 according to design requirements, so that the pump body sealing ring is integrally positioned in the diameter direction, and the positioning in the axis direction is realized by the wedge-shaped bulge 2 and the wedge-shaped groove 3 on the pump body sealing ring. The split of the upper half ring 101 and the lower half ring 102 is performed in the axial direction, not in the diameter direction of the conventional mid-open seal ring. And after the mid-parting line is cut, finishing the inner hole of the whole body of the main body 1, and after the machining is finished, making the pairing marks of the upper half ring 101 and the lower half ring 102, so that the part manufacturing is finished.
The preparation precision requirement of the embodiment is as follows: the diameter of the wire-cutting wire is 0.06 to 0.1 mm. The precision completely meets the requirement of the fit clearance of the pump body sealing ring.
The wedge seal structure is passed through to this embodiment, effectively solves the old structure that original pump body sealing ring leaned on the screw to close, has the characteristics of change convenience, not damaging the pump body, improves production efficiency and product quality.
The size and the angle of the face of opening in the wedge can be changed to this embodiment, realize accomplishing the not damaged change on the pump body sealing ring of multiple size, especially solved the unable small-size sealing ring change problem through the fix with screw.
The embodiment has the following characteristics:
1. the manufacturing process and the working procedure are simple, the manufacturing cost is saved, and the production efficiency is improved;
2. the assembly and the replacement are quick, simple and convenient, and the assembly and maintenance efficiency is improved;
3. the size and the angle of the wedge-shaped middle opening surface are changed, so that nondestructive replacement on pump body sealing rings with various sizes is realized, and the problem of replacement of small-size sealing rings which cannot be fixed through screws is particularly solved;
4. for the pump body sealing ring made of special materials, the problem that screws made of special materials are difficult to purchase is solved;
5. the problem of pump body sealing ring damage caused by screw deformation problem is avoided.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Moreover, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Claims (2)
1. A middle open type pump body sealing ring is characterized in that: the sealing ring main body (1) which is annular as a whole is separated along the axis to form an upper half ring (101) and a lower half ring (102) of the sealing ring, and two groups of wedge-shaped bulges (2) which are bulged upwards are respectively arranged on two upper sections of the lower half ring (102); two groups of wedge-shaped grooves (3) which are recessed inwards are respectively arranged on two lower sections of the upper half ring (101);
when the upper half ring (101) and the lower half ring (102) are combined into the sealing ring main body (1), the wedge-shaped protrusion (2) can be arranged in the wedge-shaped groove (3) to form a sealing structure.
2. The mid-open pump body seal ring according to claim 1, wherein: the upper half ring (101) and the lower half ring (102) are in a bilateral symmetry structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922271127.8U CN211397915U (en) | 2019-12-17 | 2019-12-17 | Middle-open type pump body sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922271127.8U CN211397915U (en) | 2019-12-17 | 2019-12-17 | Middle-open type pump body sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211397915U true CN211397915U (en) | 2020-09-01 |
Family
ID=72224366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922271127.8U Active CN211397915U (en) | 2019-12-17 | 2019-12-17 | Middle-open type pump body sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211397915U (en) |
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2019
- 2019-12-17 CN CN201922271127.8U patent/CN211397915U/en active Active
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