CN102900703A - Split type double-volute structure - Google Patents
Split type double-volute structure Download PDFInfo
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- CN102900703A CN102900703A CN2012104291967A CN201210429196A CN102900703A CN 102900703 A CN102900703 A CN 102900703A CN 2012104291967 A CN2012104291967 A CN 2012104291967A CN 201210429196 A CN201210429196 A CN 201210429196A CN 102900703 A CN102900703 A CN 102900703A
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Abstract
The invention relates to a split type double-volute structure. The split type double-volute structure comprises an axially split pump volute and is characterized in that a water separating bar is arranged in the axially split pump volute to form a split type double-volute structure; a positioning groove for mounting the water separating bar is formed in the axially split pump volute and is matched and connected with the water separating bar; and the left positioning diameter of the positioning groove D2 is not equal to the right positioning diameter D1 of the positioning groove. A single volute is independently and precisely cast, the precision-machined water separating bar is arranged in the single volute, and the shape and the machining precision of the inner wall surface of each flow channel of the double-volute structure are controlled, so that the double-volute structure meets the design requirements, and the efficiency and the vibration noise characteristics of a centrifugal pump are improved. The split type double-volute structure is simple in structure and convenient to mount.
Description
Technical field
The present invention relates to a kind of double volute pump group, especially a kind of split type pair of snail pump that is applicable to have the middle open centrifugal pump group of double volute structural type.
Background technique
General centrifugal pump adopts spirality Crucible shell to collect the medium that impeller outlet flows out, and medium velocity can be converted into pressure energy, eliminates impeller and flows out rotatablely moving of medium, reduces the hydraulic loss of medium in pump.Generally carry out the structural design of spirality Crucible shell as design considerations take design conditions media flow parameter, speed and the pressure of medium in spiral case is that axisymmetric distributes this moment, and acting in theory making a concerted effort on the impeller is zero.Carry out in the inclined to one side operating mode operation process at water pump, spirality Crucible shell is from cut water to exporting pressure medium and flow velocity is uneven distribution, thereby produces the radial force that acts on the impeller, makes axle be subjected to the alternating stress effect, produces directed amount of deflection, reduces the running life of pump group.In order to overcome the radial force in the pump operation process, spirality Crucible shell is improved design, adopt double volute structural type water pump.Because the double volute symmetrical configuration can be reduced to very little degree to radial force.So double volute structure water pump is widely used in the occasions such as chemical industry, metallurgy, power station, oil, boats and ships.From the hydraulic performance aspect, double volute structural type has preferably media flow characteristic, variable working condition strong adaptability, high efficiency wide ranges.But the double volute inner flow passage can not machining, and size shape, surface finishment etc. directly rely on casting to guarantee.
Along with every profession and trade to improving constantly that pump group operational efficiency and vibration noise require, when carrying out pumps design, must consider its ride quality, efficient and vibration noise characteristic.In the pump operation process, spiral case sectional shape and wall degree of finish have a huge impact the media flow characteristic, existing double volute structure water pump adopts technique for integral casting usually, inner flow passage is complicated, owing to can't accurately control spiral casing flow passage shape and surface finishment, thereby having restricted the high efficiency that meets designing requirement, the manufacturing of low-vibration noise water pump.For the middle open type double-volute centrifugal pump, adopt split type double volute structure, can process respectively the pump housing, pump cover and double volute runner, well control double volute sectional shape and the requirement of wall degree of finish
When carrying out the design of pump group, often adopt double volute structural type to control the centrifugal pump radial force at present, improve the efficient of pump group.But double volute design mainly concentrates on the whole efficiency to pump, horizontal middle open type double-volute multistage centrifugal pump such as China Patent No. 201120278109.3, it is characterized in that in impeller hub, putting out meshed grooves and form spiral seal, reduce axial backflow leakage, improve pump efficiency.A kind of pump shell structure of high-efficiency centrifugal pump of China Patent No. 201020654754.6 is characterized in that designing efficient suction chamber and double volute structure, improves the efficient of pump.Double volute design in the above-mentioned patent all adopts integral casting forming structural type structure to have following problem:
(1) the casting difficulty is larger;
(2) spiral case sectional shape and degree of finish are difficult to accurate control;
(3) the follow-up improvement in performance of pump group is difficult.
Summary of the invention
The object of the invention is to overcome in the middle open type double-volute pump group manufacture process, the shortcoming of uncontrollable spiral casing flow passage shape and surface finishment provides a kind of split type double volute structure, thereby reaches the purpose that improves pump group performance and vibration noise requirement.
For achieving the above object, technological scheme of the present invention is: a kind of split type double volute structure, comprise the middle-opening pump spiral case, and be characterized in: a minute water muscle is installed in the middle-opening pump spiral case, is formed split type double volute.
Be provided with in the middle-opening pump spiral case for the positioning groove that minute water muscle is installed, and positioning groove is connected with dividing a water muscle.
The left location of positioning groove diameter D2 ≠ right location diameter D1.
Beneficial effect of the present invention;
The present invention adopts split type double volute structure:
1, change original whole double volute structure, the inner gusset of double volute has been processed separately, opened spiral case inside in being mounted to, and along with pump housing location and installation, creative.
2, split type double volute structure more generally is applicable to middle beginning twin-volute water pump design, and is easy to control double volute inner flow passage shape and degree of finish, and is practical.
3, original narrow distortion of double volute inner flow passage can't be carried out polishing and the surface clean repair of inner flow passage; Split type guider can will divide the water muscle to split out, and carries out the spiral case internal face and cleans reparation, and unfolding mode is succinct, has novelty.
The present invention is by the single spiral case of independent precision casting and accurately machined minute water muscle is installed, and shape and the machining accuracy of control double volute runner inner wall face, obtains to meet the double volute structure of designing requirement, improves efficiency of centrifugal pump and vibration noise characteristic.This invention is simple in structure, easy for installation.
Description of drawings
Fig. 1 is construction profile schematic diagram of the present invention;
Fig. 2 is the sectional view that minute water muscle is installed in the middle-opening pump spiral case;
Fig. 3 is provided with the positioning groove sectional view in the middle-opening pump spiral case;
Fig. 4 is a minute water muscle structural front view;
Fig. 5 is along the sectional view of B-B among Fig. 4.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: the present embodiment is implemented under take technical solution of the present invention as prerequisite, has provided detailed mode of execution and process, but protection scope of the present invention is not limited to following embodiment.
To shown in Figure 5, split type double volute structure of the present invention comprises middle-opening pump spiral case 1, pump cover 2, minute water muscle 3 etc. such as Fig. 1.The 1 interior installation of middle-opening pump spiral case divides water muscle 3, forms split type double volute (Fig. 1 is shown in 2).
Be provided with in the middle-opening pump spiral case 1 for positioning groove 4(Fig. 3 that minute water muscle is installed), and positioning groove 4 is connected with a minute water muscle 3.Positioning groove 4 left location diameter D2 ≠ right location diameter D1.
As shown in Figure 3, the present embodiment carries out single Volute Design to middle-opening pump, processing positioning groove 4 anti-wrongly installed mistake occurs, to positioning groove 4 both sides location dimensions (right diameter D1, the left diameter D2) design of staggering when middle-opening pump spiral case 1 is installed with minute water muscle 3.
Such as Fig. 4, shown in 5, adopt double volute runner design method to design to minute water muscle 3, carry out separately fine finishing, guarantee flow channel shape and degree of finish.
Common double worm frame and split type double volute structure of the present invention compare:
| Sequence number | Common double worm frame pump group | Split type double volute pump group |
| 1 | The casting difficulty is higher | The casting difficulty is low, easy for installation |
| 2 | Spiral case sectional shape and degree of finish are difficult to control | Accurately control spiral case sectional shape and degree of |
| 3 | Pump group performance characteristics is improved difficulty | By revising a minute water muscle structure, can be optimized improvement to pump characteristics smoothly. |
Claims (3)
1. a split type double volute structure comprises middle-opening pump spiral case (1), it is characterized in that: a minute water muscle (3) is installed in the described middle-opening pump spiral case (1), is formed split type double volute.
2. split type double volute structure according to claim 1 is characterized in that: be provided with in the described middle-opening pump spiral case (1) for the positioning groove (4) that minute water muscle is installed, and positioning groove (4) is connected with a minute water muscle (3).
3. split type double volute structure according to claim 2 is characterized in that: described positioning groove (4) left location diameter D2 ≠ right location diameter D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104291967A CN102900703A (en) | 2012-11-01 | 2012-11-01 | Split type double-volute structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104291967A CN102900703A (en) | 2012-11-01 | 2012-11-01 | Split type double-volute structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102900703A true CN102900703A (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104291967A Pending CN102900703A (en) | 2012-11-01 | 2012-11-01 | Split type double-volute structure |
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| CN (1) | CN102900703A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420348A (en) * | 2017-08-21 | 2017-12-01 | 王道红 | The split type sewage pump housing |
| CN114562481A (en) * | 2022-01-14 | 2022-05-31 | 大连双龙泵业集团有限公司 | Single-stage middle-opened volute type double-suction centrifugal pump and cavity machining process thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3043229A (en) * | 1957-05-27 | 1962-07-10 | Worthington Corp | Twin volute pump |
| US4076450A (en) * | 1976-01-14 | 1978-02-28 | United Centrifugal Pumps | Double volute pump with replaceable lips |
| JPH11166499A (en) * | 1997-12-03 | 1999-06-22 | Torishima Pump Mfg Co Ltd | Centrifugal pump |
| CN2402852Y (en) * | 1999-12-28 | 2000-10-25 | 薛铭 | Double volute chamber pump casing |
| CN2806844Y (en) * | 2005-07-07 | 2006-08-16 | 上海东方泵业(集团)有限公司 | Double-casing volute pump |
| US20110311357A1 (en) * | 2010-06-18 | 2011-12-22 | Sulzer Pumpen Ag | Volute Shaped Pump Casing for a Centrifugal Pump |
| CN203051222U (en) * | 2012-11-01 | 2013-07-10 | 中国船舶重工集团公司第七0四研究所 | Split type double-volute structure |
-
2012
- 2012-11-01 CN CN2012104291967A patent/CN102900703A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3043229A (en) * | 1957-05-27 | 1962-07-10 | Worthington Corp | Twin volute pump |
| US4076450A (en) * | 1976-01-14 | 1978-02-28 | United Centrifugal Pumps | Double volute pump with replaceable lips |
| JPH11166499A (en) * | 1997-12-03 | 1999-06-22 | Torishima Pump Mfg Co Ltd | Centrifugal pump |
| CN2402852Y (en) * | 1999-12-28 | 2000-10-25 | 薛铭 | Double volute chamber pump casing |
| CN2806844Y (en) * | 2005-07-07 | 2006-08-16 | 上海东方泵业(集团)有限公司 | Double-casing volute pump |
| US20110311357A1 (en) * | 2010-06-18 | 2011-12-22 | Sulzer Pumpen Ag | Volute Shaped Pump Casing for a Centrifugal Pump |
| CN203051222U (en) * | 2012-11-01 | 2013-07-10 | 中国船舶重工集团公司第七0四研究所 | Split type double-volute structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420348A (en) * | 2017-08-21 | 2017-12-01 | 王道红 | The split type sewage pump housing |
| CN114562481A (en) * | 2022-01-14 | 2022-05-31 | 大连双龙泵业集团有限公司 | Single-stage middle-opened volute type double-suction centrifugal pump and cavity machining process thereof |
| CN114562481B (en) * | 2022-01-14 | 2024-01-09 | 大连双龙泵业集团有限公司 | Single-stage middle-opening volute type double-suction centrifugal pump cavity machining process |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130130 |