CN102345629A - Sealing ring structure for high-flow high-lift double suction pump - Google Patents
Sealing ring structure for high-flow high-lift double suction pump Download PDFInfo
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- CN102345629A CN102345629A CN 201010243273 CN201010243273A CN102345629A CN 102345629 A CN102345629 A CN 102345629A CN 201010243273 CN201010243273 CN 201010243273 CN 201010243273 A CN201010243273 A CN 201010243273A CN 102345629 A CN102345629 A CN 102345629A
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- sealing ring
- pump
- pressure cavity
- seal ring
- impeller
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Abstract
The invention relates to a sealing ring structure for a high-flow high-lift double suction pump. The structure comprises a body, wherein the body comprises a sealing ring outer circle and a sealing ring inner circle; the sealing ring outer circle is provided with two O-rings matched with matching surfaces of a pump body and a pump cover; and the sealing ring inner circle is provided with at least three labyrinth seal grooves matched with a seam allowance position of an impeller. The sealing ring structure has the advantages that: A, through the labyrinth seal grooves, the leakage rate of liquid which returns from an impeller outlet (a high-pressure cavity) to an impeller inlet (a low-pressure cavity) is well reduced, volume loss is reduced, the efficiency of the pump is improved, and energy is well saved; B, the O-rings of the outer circle are used, so that water in the high-pressure cavity and water in the low-pressure cavity of a water pump are prevented from being mixed with each other, and washout caused by hydraulic impact of the liquid from the impeller outlet (the high-pressure cavity) to one side of the impeller inlet (the low-pressure cavity) is avoided; and C, a sealing ring is easy to manufacture, reliably installed and low in cost, and the service life is prolonged.
Description
Technical field
The present invention relates to the seal ring of the high-lift double suction pump of a kind of big flow, relate in particular to the structure of sealing ring.
Background technique
The big used seal ring structure of the high-lift double suction pump of flow in the existing technology generally adopts straight simple structure (as shown in Figure 1, figure middle shell 3, impeller 2), and promptly the inside and outside circle of seal ring 1 (12,11) is located to be and faced directly.Pump is on-stream; The high-lift double suction pump of particularly big flow; Owing to containing reasons such as solid particle, impeller rock in not in place, the fair wear and tear of processing, the medium, the radial clearance of centrifugal pump impeller choma and seal ring is become greatly, or the phenomenon that seal ring breaks occurs; The high-lift double suction pump of particularly big flow is pumped when containing solid particle in the medium or containing corrosive material, and the direct erosion housing of powerful water hammer " watershed " (being the foundry goods section of cutting apart between suction chamber and the hyperbaric chamber) causes high low pressure chamber string water phenomenon; Then, do not have seal action, cause a large amount of backflows, reduce the actual flow of pump, volumetric loss increases, and makes liquid form vortex at the impeller eye place, makes suction performance not good, and hydraulic loss increases, and efficient reduces.
Summary of the invention
The technical issues that need to address of the present invention have provided the seal ring structure of the high-lift double suction pump of a kind of big flow, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention realizes through following technological scheme:
The present invention includes: body; Described body comprises circle in seal ring cylindrical and the seal ring; On described seal ring cylindrical, also be provided with two O shape circles that cooperate with the pump housing and pump cover fitting surface; At least 3 labyrinth seal grooves that cooperate with impeller seam position also are set on the circle in described seal ring;
Described seal groove size is between 5-7mm.
Its seal ring cylindrical (with the pump housing, pump cover fitting surface) is set up two O shape circles, and circle (with cooperation place, impeller seam position) is set up the labyrinth seal groove in the seal ring, and size of labyrinth seal groove (5-7mm) and number (>=3) are decided according to actual conditions design
Compared with prior art, the invention has the beneficial effects as follows: A, labyrinth seal groove have reduced liquid well and drained back to the leakage rate of impeller eye (low pressure chamber) from impeller outlet (hyperbaric chamber), reduced volumetric loss, be beneficial to the efficient that improves pump, and be energy-conservation well; The use of B, its cylindrical O shape circle sealed water pump high low pressure chamber string water, avoided liquid to wash away " erosion " from impeller outlet (hyperbaric chamber) to what the water hammer of impeller eye (low pressure chamber) side caused; That C, this invention seal ring are made is simple, reliable installation, cost are low, be able to prolong working life.
Description of drawings
Fig. 1 is a seal ring structure schematic representation of the prior art.
Fig. 2 is a structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
Visible by Fig. 2: as to the present invention includes: body 1; Described body 1 comprises the interior circle 12 of seal ring cylindrical 11 and seal ring; On described seal ring cylindrical 11, also be provided with two O shape circles 111 that cooperate with the pump housing and pump cover (not shown) fitting surface; At least 3 labyrinth seal grooves 121 that cooperate with impeller 2 seam positions also are set on the circle 12 in described seal ring;
Described seal groove 121 sizes are between 5-7mm.Among the figure: housing 3.
The present invention sets up two O shape circles at its seal ring cylindrical (with the pump housing, pump cover fitting surface), and circle (with cooperation place, impeller seam position) is set up the labyrinth seal groove in the seal ring, and size of labyrinth seal groove (5-7mm) and number (>=3) are decided according to actual conditions design.
The change of seal ring structure of the present invention lets the effect of seal ring become more outstanding, has solved to exist high low pressure chamber string water, radial clearance to leak serious technical problem in the existing technology.
Claims (2)
1. the seal ring structure of the high-lift double suction pump of big flow comprises: body; Described body comprises circle in seal ring cylindrical and the seal ring; It is characterized in that: on described seal ring cylindrical, also be provided with two O shape circles that cooperate with the pump housing and pump cover fitting surface; At least 3 labyrinth seal grooves that cooperate with impeller seam position also are set on the circle in described seal ring.
2. the seal ring structure of the high-lift double suction pump of big flow according to claim 1 is characterized in that: described seal groove size is between 5-7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010243273 CN102345629A (en) | 2010-08-03 | 2010-08-03 | Sealing ring structure for high-flow high-lift double suction pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010243273 CN102345629A (en) | 2010-08-03 | 2010-08-03 | Sealing ring structure for high-flow high-lift double suction pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102345629A true CN102345629A (en) | 2012-02-08 |
Family
ID=45544602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010243273 Pending CN102345629A (en) | 2010-08-03 | 2010-08-03 | Sealing ring structure for high-flow high-lift double suction pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102345629A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398020A (en) * | 2013-08-15 | 2013-11-20 | 长沙山水节能研究院有限公司 | Water pump wear-ring sealing device and wear-ring thereof |
| CN104564785A (en) * | 2013-10-23 | 2015-04-29 | 沈阳鼓风机集团核电泵业有限公司 | Hydraulic sealing groove and machining method and detection method thereof |
| CN113294377A (en) * | 2021-06-23 | 2021-08-24 | 上海凯泉泵业（集团）有限公司 | Sealing ring structure of double-suction pump for nuclear power |
-
2010
- 2010-08-03 CN CN 201010243273 patent/CN102345629A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398020A (en) * | 2013-08-15 | 2013-11-20 | 长沙山水节能研究院有限公司 | Water pump wear-ring sealing device and wear-ring thereof |
| CN104564785A (en) * | 2013-10-23 | 2015-04-29 | 沈阳鼓风机集团核电泵业有限公司 | Hydraulic sealing groove and machining method and detection method thereof |
| CN113294377A (en) * | 2021-06-23 | 2021-08-24 | 上海凯泉泵业（集团）有限公司 | Sealing ring structure of double-suction pump for nuclear power |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120208 |