CN202215740U - Plane sealing structure and horizontal split multi-stage pump adopting same - Google Patents
Plane sealing structure and horizontal split multi-stage pump adopting same Download PDFInfo
- Publication number
- CN202215740U CN202215740U CN2011203282092U CN201120328209U CN202215740U CN 202215740 U CN202215740 U CN 202215740U CN 2011203282092 U CN2011203282092 U CN 2011203282092U CN 201120328209 U CN201120328209 U CN 201120328209U CN 202215740 U CN202215740 U CN 202215740U
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- sealing structure
- plane
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Abstract
A plane sealing structure is formed by two rigid planes and a gasket clamped between the rigid planes. The two rigid planes are respectively provided with criss-cross grooves, the cross section of the grooves is V-shaped, the depth and the width of the grooves have corresponding requirements, the bottoms of the grooves are round corners, the radius of the round corners also has corresponding requirements, and central spacing of the grooves is 1-1.2mm. A horizontal split multi-stage pump is further provided, and characteristics of sealing surfaces of a pump body and a pump cover are identical with those of the two rigid planes of the plane sealing structure. The plane sealing structure increases frictional force between the gasket and the rigid planes and improves sealing performance. The horizontal split multi-stage pump can guarantee that the gasket is not rushed away from the position, thereby reducing possibility of pump case leakage. Pressure bearing capability of a pump case can reach to 20MPa, and designed lifting range of the horizontal split multi-stage pump can reach to 1600m.
Description
Technical field
The utility model relates to by two rigid planes and is clipped in the plane sealing structure that two pads between the rigid plane constitute.
The utility model also relates to multistage centrifugal pump, drives multistage pump in particularly.
Background technique
Sealing between the rigid plane that profile is irregular and area is bigger, most employing is by these two rigid planes and be clipped in the plane sealing structure that two pads between the rigid plane constitute.For example, opening between the pump housing and the pump cover of multistage pump in is exactly to adopt this plane sealing structure.In the prior art, two rigid planes in this plane sealing structure all are smooth surfaces, that is require the roughness on plane to reach certain precision, make the gap between pad and the rigid plane as far as possible little.Yet the sealability of known this plane sealing structure is not ideal enough all the time at present.For example, in the middle of drive multistage pump rated lift than higher the time, such as reaching 1200m, adopt above-mentioned sealing configuration in hold between the pump housing and the pump cover of multistage pump and just might leak.
The model utility content
For solving the ubiquitous problem of above-mentioned existing technology, the utility model provides a kind of plane sealing structure, and this plane sealing structure can reach higher sealability.
The utility model also provide in addition a kind of adopt this plane sealing structure in drive multistage pump, make can reach higher sealing between the pump housing of driving multistage pump in this and the pump cover.
The main technical schemes that a kind of plane sealing structure that provides according to the utility model is taked is: a kind of plane sealing structure, and by two rigid planes be clipped in two pads between the rigid plane and constitute, two rigid planes are respectively equipped with crisscross groove; The cross section of groove is a V-arrangement; The degree of depth of groove is 0.08 ~ 0.1mm, and the width of rebate of groove is 0.2 ~ 0.24mm, and the bottom of groove is a fillet; Fillet radius is 0.05mm, and the center distance of groove is 1 ~ 1.2mm.
A kind of plane sealing structure that provides according to the utility model also adopts following attached technological scheme: the curved shape trend of said groove.
Said pad is the asbestos compressed board, and its tensile breaking strength is not less than 30MPa, and compressibility is 5 ~ 10%, and rebound degree is 55 ~ 65%.
Said groove evenly is covered with described two rigid planes.
According to the utility model provide a kind of in open the main technical schemes that multistage pump takes and be: drive multistage pump in a kind of, comprise the pump case that is put together by the pump housing and pump cover, the sealing surface of the pump housing and pump cover is a rigid plane; Between the sealing surface of the pump housing and pump cover, accompany pad; The sealing surface of the pump housing and pump cover is respectively equipped with crisscross groove, and the cross section of groove is a V-arrangement, and the degree of depth of groove is 0.08 ~ 0.1mm; The width of rebate of groove is 0.2 ~ 0.24mm; The bottom of groove is a fillet, and fillet radius is 0.05mm, and the center distance of groove is 1 ~ 1.2mm.
According to the utility model provide a kind of in drive multistage pump and also adopt following attached technological scheme: the curved shape trend of said groove.
Said pad is the asbestos compressed board, and its tensile breaking strength is not less than 30MPa, and compressibility is 5 ~ 10%, and rebound degree is 55 ~ 65%.
Said groove evenly is covered with the sealing surface of the pump housing and pump cover.
The plane sealing structure that provides according to the utility model compared with prior art has following advantage:
(1) increases frictional force between pad and the rigid plane, made pad can bear bigger tangential force, prevented the pad displacement;
(2) existence of groove has produced the effect of labyrinth seal, and each road groove all can produce throttling action, through multistage throttle, sealability is greatly improved.
According to the utility model provide in drive multistage pump and compared with prior art have following advantage:
(1) increased frictional force between the pad and the pump housing, the pump cover, under the state of High Pressure Difference inside and outside the pump case, can guarantee that pad is not dashed to off normal to be put;
(2) existence of groove has produced the effect of labyrinth seal, and each road groove all can produce throttling action, through multistage throttle, has reduced the possibility that pump case leaks;
(3) the pump case bearing capacity can reach 20MPa, and the rated lift of driving multistage pump in making can reach 1600m.
Description of drawings
Fig. 1 illustrates in the plane sealing structure that the utility model provides, and is located at the groove spread geometry on the rigid plane and moves towards exemplary plot;
Fig. 2 is the A-A broken section enlarged view of Fig. 1, and the shape of cross section of groove is shown;
During providing, opens Fig. 3 the utility model the pump case schematic representation of multistage pump;
Fig. 4 illustrates the worm's eye view of the pump cover among Fig. 3, and the sealing surface of pump cover is shown.
Embodiment
A kind of plane sealing structure that provides according to the utility model is by two rigid planes be clipped in two pads between the rigid plane and constitute.Two rigid planes are metallic material normally.Two rigid planes all are provided with crisscross groove 1 as shown in Figure 1.Referring to Fig. 2, the cross section of groove 1 is a V-arrangement, and the depth H of groove 1 is 0.08 ~ 0.1mm, and the width W of groove 1 is 0.2 ~ 0.24mm, and the bottom of groove 1 is a fillet, and fillet radius R is 0.03 ~ 0.06mm, and the center distance L of groove is 1 ~ 1.2mm.For example, the desirable 0.1mm of the depth H of groove 1, the desirable 0.24mm of the width W of groove 1, the desirable 0.05mm of the fillet radius R of groove 1.
As preferred forms, said groove 1 curved shape trend so can strengthen sealing effect.Be clipped in two pads between the rigid plane and be preferably the asbestos compressed board, its tensile breaking strength is not less than 30MPa, and compressibility is 5 ~ 10%, and rebound degree is 55 ~ 65%, to obtain and the best fiting effect of groove, improves sealing.Said groove evenly is covered with described two rigid planes, can reach best sealing effect.
Referring to Fig. 3; According to the utility model provide in drive multistage pump and comprise the pump case that is put together by the pump housing 2 and pump cover 3; The sealing surface of the pump housing 2 and pump cover 3 is a rigid plane; Between the sealing surface of the pump housing 2 and pump cover 3, accompany pad 4 (express pad 4 for clear, Fig. 3 separates the pump housing 2, pump cover 3 and pad 4 intentionally).Referring to Fig. 3 and Fig. 4, the sealing surface of pump cover 3 is provided with crisscross groove 1 simultaneously.The spread geometry of groove 1, trend and shape of cross section are identical with embodiment illustrated in figures 1 and 2, repeat no more.Groove on the sealing surface of the pump housing 2 and pump cover 3 should evenly be covered with whole sealing surface, to reach best sealing effect.
The pad 4 that is clipped between the sealing surface of the pump housing 2 and pump cover 3 is preferably the asbestos compressed board, and its tensile breaking strength is not less than 30MPa, and compressibility is 5 ~ 10%, and rebound degree is 55 ~ 65%, to obtain and the best fiting effect of groove, improves sealing.
Groove structure on the sealing surface of the pump housing 2 is identical with pump cover 3, repeats no more.
Claims (8)
1. plane sealing structure, by two rigid planes be clipped in two pads between the rigid plane and constitute, it is characterized in that: two rigid planes are respectively equipped with crisscross groove; The cross section of groove is a V-arrangement; The degree of depth of groove is 0.08 ~ 0.1mm, and the width of rebate of groove is 0.2 ~ 0.24mm, and the bottom of groove is a fillet; Fillet radius is 0.03 ~ 0.06mm, and the center distance of groove is 1 ~ 1.2mm.
2. plane sealing structure as claimed in claim 1 is characterized in that: the curved shape trend of said groove.
3. like the described plane sealing structure in one of claim 1 or 2, it is characterized in that: said pad is the asbestos compressed board, and its tensile breaking strength is not less than 30MPa, and compressibility is 5 ~ 10%, and rebound degree is 55 ~ 65%.
4. like the described plane sealing structure in one of claim 1 or 2, it is characterized in that: said groove evenly is covered with described two rigid planes.
5. drive multistage pump in one kind, comprise the pump case that is put together by the pump housing and pump cover, the sealing surface of the pump housing and pump cover is a rigid plane; Between the sealing surface of the pump housing and pump cover, accompany pad, it is characterized in that: the sealing surface of the pump housing and pump cover is respectively equipped with crisscross groove, and the cross section of groove is a V-arrangement; The degree of depth of groove is 0.08 ~ 0.1mm, and the width of rebate of groove is 0.2 ~ 0.24mm, and the bottom of groove is a fillet; Fillet radius is 0.05mm, and the center distance of groove is 1 ~ 1.2mm.
6. drive multistage pump in as claimed in claim 5, it is characterized in that: the curved shape trend of said groove.
7. drive multistage pump like one of claim 5 or 6 in described, it is characterized in that: said pad is the asbestos compressed board, and its tensile breaking strength is not less than 30MPa, and compressibility is 5 ~ 10%, and rebound degree is 55 ~ 65%.
8. drive multistage pump like one of claim 5 or 6 in described, it is characterized in that: said groove evenly is covered with the sealing surface of the pump housing and pump cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203282092U CN202215740U (en) | 2011-09-02 | 2011-09-02 | Plane sealing structure and horizontal split multi-stage pump adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203282092U CN202215740U (en) | 2011-09-02 | 2011-09-02 | Plane sealing structure and horizontal split multi-stage pump adopting same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202215740U true CN202215740U (en) | 2012-05-09 |
Family
ID=46014996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203282092U Expired - Lifetime CN202215740U (en) | 2011-09-02 | 2011-09-02 | Plane sealing structure and horizontal split multi-stage pump adopting same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202215740U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359591A (en) * | 2011-09-02 | 2012-02-22 | 广东省佛山水泵厂有限公司 | Plane sealing structure and axially split multistage pump using same |
-
2011
- 2011-09-02 CN CN2011203282092U patent/CN202215740U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359591A (en) * | 2011-09-02 | 2012-02-22 | 广东省佛山水泵厂有限公司 | Plane sealing structure and axially split multistage pump using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 528000 Guangdong Province, Foshan city Chancheng District River Road No. 14 Patentee after: GUANGDONG KENFLO PUMP CO., LTD. Address before: 528000 Guangdong Province, Foshan city Chancheng District River Road No. 14 Patentee before: Guangdong Foshan Water Pump Factory Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |
|
| CX01 | Expiry of patent term |