CN103047185A - Beveled bidirectional vertical pump device - Google Patents
Beveled bidirectional vertical pump device Download PDFInfo
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- CN103047185A CN103047185A CN2012105617070A CN201210561707A CN103047185A CN 103047185 A CN103047185 A CN 103047185A CN 2012105617070 A CN2012105617070 A CN 2012105617070A CN 201210561707 A CN201210561707 A CN 201210561707A CN 103047185 A CN103047185 A CN 103047185A
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Abstract
The invention belongs to the technical field of hydraulic engineering and discloses a beveled bidirectional vertical pump device which comprises a bidirectional rectangular water inlet runner, a rectangular water outlet runner, an eddy elimination and prevention cone, an inlet flared pipe, an impeller chamber, a guide vane part, a despinner, an annular siphonic water outlet structure, a rear water guide cone, an outlet flared pipe and a humped annular shell. The eddy elimination and prevention cone is arranged in the rectangular water inlet runner below the inlet flared pipe, an inlet of the impeller chamber is connected with the inlet flared pipe, and an outlet of the impeller chamber is connected with the guide vane part. The despinner, the rear water guide cone and the outlet flared pipe are sequentially arranged on the upper portion of the guide vane part, the upper annular side of the humped annular shell is smoothly connected with the upper edge of the rear water guide cone, the lower annular side of the humped annular shell is positioned in the rectangular water outlet runner to form the annular siphonic water outlet structure, and the humped tope of the annular siphonic water outlet structure is provided with a vent hole connector connected with a vacuum breaker valve. The beveled bidirectional vertical pump device is structurally reasonable and scientific, has four functions of self-discharging, self-sucking, pump-discharging and pump-sucking and is high in automation degree and convenient to operate and manage, efficiency of the pump device is improved, and investment is saved.
Description
Technical field
The present invention relates to a kind of water engineering facility, the structure of especially two-way vertical pump device belongs to the hydraulic engineering technical field.
Background technique
Fill with for reaching that row is two-way to draw water and row is from the purpose of drawing certainly, advance works arranges to reach this purpose by the hinge of employing " station four locks ".In recent years, adopt the two-way pump station water inlet and outlet device (patent No.: 02286342.7) built many big-and-middle-sized box culvert-type reversible passage pump-units in riverine lakeside area, and for this pump-unit water flowing out structure application the open-type pump draining chamber (patent No.: 96231988.0), can find all that by methods of pump set model tests and CFD calculating fluidised form is disorderly in traditional Tank-style Outlet Passage, cause hydraulic loss very large, traditional Bidirectional water outlet runner all adopts stop gate, the waterpower exciting that brings out in the runner can cause that outlet passage closes the vibration of side gate, produce noise, and then affect the safe and stable operation of pump-unit; Traditional box culvert-type two-way water inflow passage easily produces the whirlpool band, affects the normal operation of water pump, reduces the pump-unit whole efficiency, thereby increases energy consumption, runs counter to the policy that national energy-saving reduces discharging.
At present, the water inlet structure pattern of unidirectional runner pump-unit mainly contains elbow water inlet flow channel, bell water inlet flow channel, dustpan shaped water inlet flow channel, vertical shaft type water inlet flow channel, oblique inlet passage and 6 kinds of forms of box culvert-type water inlet pool; The water flowing out structure pattern mainly contains straighttube-type outlet passage, siphon outlet conduit, inclined outlet passage and 4 kinds of forms of box culvert-type water outlet pool; Cutout mode commonly used has flap valve, stop gate, three kinds of forms of vacuum breaker valve.These water inlet structure patterns, water flowing out structure pattern and cutout mode have all obtained widely engineering application in unidirectional runner pump-unit, so for two-way vertical pump device, can use for reference structural type wherein and design and invent out in conjunction with the characteristics of two-way vertical pump device self and a kind ofly overcome traditional double to the shortcoming of vertical pump device, whirlpool band such as two-way water inflow passage, fluidised form is complicated in the outlet passage, hydraulic loss is large and without key issues such as rectification measures, in conjunction with the situation of traditional double to vertical pumping plant actual motion, can adopt have easy and simple to handle, cutout is reliable, overhaul the mode that stops easily, for these problems, design a kind of novel two-way its meaning of vertical pump device and application value and just seem very large, can not only solve the above problems, and can improve the unit fixed on water pump suction condition, improve Bidirectional water outlet runner internal flow state, improve the hydraulic performance of pump-unit, and then play the effect of energy-saving and emission-reduction.
Summary of the invention
The objective of the invention is the deficiency that exists for above-mentioned prior art, use for reference the structural type of unidirectional runner pump-unit and in conjunction with the characteristics of two-way vertical pump device, design a kind of novel two-way vertical pump apparatus structure, reached following purpose:
(1) the difference scheduling by gate realizes that row draws certainly certainly, pump drainage is taken out the multiple function that draws;
(2) break through traditional double to the single technical barrier of vertical pump device cutout mode, reach easily purpose of pump-unit Operation, Administration and Maintenance, reduce the interrupter device investment, improve the interrupter device reliability;
(3) eliminate whirlpool band in the reversible passage pump-unit, improve the water pump condition that becomes a mandarin, adjust the water flow passage internal flow state.
Technological scheme of the present invention is, the two-way vertical pump device of umbrella shape, comprise two-way cuboid water inlet flow channel, the cuboid outlet passage, anti-whirlpool, whirlpool cone disappears, the import oviduct, blade wheel chamber, diffuser, anti-whirlpool, the whirlpool cone that disappears is arranged in the two-way cuboid water inlet flow channel of import oviduct below, blade wheel chamber's import connects the import oviduct, blade wheel chamber's outlet connects diffuser, it is characterized in that, be provided with racemic form, annular siphon water outlet structure, rear water guide cone, the outlet loudspeaker pipe, the hump circular casing, racemic form, rear water guide cone, the outlet loudspeaker pipe is successively set on the top of diffuser, described racemic form is by wheel hub, blade and shell consist of, the wheel hub of racemic form respectively with the wheel hub of diffuser, rear water guide cone smooth connection, the shell of racemic form respectively with shell and the smooth connection of outlet loudspeaker pipe of diffuser; The upper limb smooth connection of hump circular casing pressed on ring limit and rear water guide cone, lower ring limit places looping siphon water outlet structure in the cuboid outlet passage, and the hump top of annular siphon water outlet structure is provided with at least two vent interfaces that are evenly arranged and is connected to vacuum breaker valve.
Described two-way cuboid water inlet flow channel is identical with length and the width of cuboid outlet passage, and cuboid outlet passage outlet port and two-way cuboid water inlet flow channel two influent sides are provided with gate.
Described anti-whirlpool, the whirlpool cone nut line that disappears adopts 1/4th oval camber line or variable curvature camber line, disappearing, cone bottom diameter is bored in anti-whirlpool, whirlpool and vertex of a cone diameter ratio is 7.00, the bus of import oviduct is similar to anti-whirlpool, the whirlpool element of a cone line style that disappears, import oviduct bus root edge is along connecing 1/4th ellipse or variable curvature curve, and the import oviduct is " gentleman's cap " shape; Be 0.50 times of impeller nominal diameter with water inlet flow channel base plate spacing at the bottom of the import oviduct, import oviduct admission section diameter is identical with the bottom surface diameter that bore in anti-whirlpool, the whirlpool that disappears, and is 1.50 times of impeller nominal diameter.
The wheel hub of described racemic form is identical with wheel hub and the housing diameter of diffuser outlet side with housing diameter, the blade of racemic form is straight or twisted blade, the blade two side ends is consolidated into an overall structure with wheel hub and shell respectively, and the blade upper and lower end is the oval molded line of pointed cone.
The outlet passage wall section that the upper limb smooth connection of described hump circular casing pressed on ring limit and rear water guide cone consists of is the form of fracture of circle or variable curvature camber line.
The present invention's science rational in infrastructure take water-in and water-out runner hydraulic performance judging quota as foundation, is incorporated into, the pluses and minuses of the design method of outlet passage and cutout mode, and two-way vertical pump device is carried out structural design.Anti-whirlpool, the whirlpool cone that disappears is arranged in the two-way cuboid water inlet flow channel of import oviduct below, blade wheel chamber's import connects the import oviduct, blade wheel chamber's outlet connects diffuser, racemic form, rear water guide cone, the outlet loudspeaker pipe is successively set on the top of diffuser, the wheel hub of racemic form respectively with the wheel hub of diffuser, rear water guide cone smooth connection, the shell of racemic form respectively with shell and the smooth connection of outlet loudspeaker pipe of diffuser, the upper limb smooth connection of hump circular casing pressed on ring limit and rear water guide cone, guarantee that current transit between hump circular casing Outlet Section diffusion evenly by racemic form outlet annulus section and without sudden change of flow speed, the ring limit places in the cuboid outlet passage under the hump circular casing, consist of a kind of compound Bidirectional water outlet runner that beveled structure is arranged that is, the ring limit places in the cuboid outlet passage under the hump circular casing, and the hump top is provided with at least two vent interfaces that are evenly arranged and connects vacuum breaker valve.Water inlet flow channel hydraulic performance judging quota has four: (1) speed weighted mean angle; (2) the axial velocity profile uniformity; (3) hydraulic loss; (4) average vortex angle.Outlet passage hydraulic performance judging quota has two: (1) hydraulic loss; (2) pressure energy restitution coefficient.The water-in and water-out runner adopts first the typical water hydraulic design method to carry out proposal plan to adopt the CFD technology that it is optimized again.
Advantage of the present invention and beneficial effect:
The two-way vertical pump device of umbellate form has from row from drawing, pump drainage is taken out four kinds of effects of drawing, played the in the past effect of " station four locks ", has less investment, operation management is convenient, the characteristics that automaticity is high, it is simple in structure that the present invention takes full advantage of box culvert-type two-way water inflow passage, easy construction and water inlet fluidised form are smooth-going, from drawing the strong characteristics of conveyance capacity, also utilized the simple to operate of vacuum breaker valve, cutout is reliable and overhaul easily advantage, has solved simultaneously traditional cuboid outlet passage interrupter device and has involved great expense large with traditional siphon outlet conduit engineering work load, construction is the key issue of difficulty comparatively.
Vacuum breaker valve destroys siphon, cuts off the function of current, reaches convenient, the reliable purpose of operation.
Two-way cuboid water inlet flow channel can be avoided the generation of the inner whirlpool of runner band, slackens the large puzzlement of unit vibration and noise, and anti-whirlpool, the whirlpool that disappears cone is manufactured and implemented easily, and is little from the choked flow impact of drawing from row on runner.The import oviduct is used in combination with anti-whirlpool, the whirlpool that disappears cone can further reach the smooth-going purpose that enters blade wheel chamber of current, and the oviduct root edge also has the effect that whirlpool, runner top band enters oviduct that cuts off along the arc that upwarps that connects.
Racemic form has simple in structure, makes the characteristics of installing, overhauling convenient disassembly, and it has the effect of further recovery diffuser outlet residue circular rector, adjusts flow-shape, makes every effort to make current smooth-going, without circular rector, improves hydraulic performance and the efficient of pump-unit.
Compound Bidirectional water outlet runner adopts the transition section of simple, the annular siphon water outlet structure of molded line to be the form of fracture of circle or variable curvature camber line; Water guide cone after arranging in annular siphon water outlet structure, rear water guide cone and racemic form are and seamlessly transit; The place arranges vacuum breaker valve at hump, and in the outlet port of compound Bidirectional water outlet runner common gate is set, and reduces the designing requirement of stop gate and the cost of interrupter device, improves simultaneously pump assembly efficiency and safe operation reliability.When the unidirectional operation operating mode, described compound Bidirectional water outlet runner has not only overcome traditional siphon outlet conduit and has been only applicable to the little situation of water outlet pool variation, gate just can not play the dash effect when water level has hump, avoid flow backwards to cause the reversing of unit, adopt vacuum breaker valve to have during non-special water level and move easily advantage, both are used in conjunction with has dual reliable guarantee, it is complicated that this annular siphon water outlet structure molded line, section have all simply overcome traditional siphon outlet conduit molded line, and engineering work load is large, the shortcoming of constructional difficulties.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 a is A-A sectional drawing among Fig. 1.
Fig. 2 b is B-B sectional drawing among Fig. 1.
Fig. 3 is D-D sectional drawing among Fig. 1.
Fig. 4 is C-C sectional drawing among Fig. 1.
Fig. 5 is structural representation of the present invention.
Fig. 6 a is that pump drainage of the present invention is taken out and drawn the operating conditions schematic diagram.
Fig. 6 b is that the present invention draws the operating conditions schematic diagram certainly from row.
Among the figure: 1 anti-whirlpool, the whirlpool cone that disappears, 2 import oviducts, 3 blade wheel chamber, 4 diffusers, 5 racemic fories, 6 outlet loudspeaker pipes, 7 rear water guide cones, 8 vent interfaces, 9 gates.
Embodiment
The two-way vertical pump device of umbrella shape, formed by two-way cuboid water inlet flow channel, cuboid outlet passage, anti-whirlpool, the whirlpool that disappears cone 1, import oviduct 2, blade wheel chamber 3, diffuser 4, racemic form 5, annular siphon water outlet structure, rear water guide cone 7, outlet loudspeaker pipe 6, hump circular casing etc., anti-whirlpool, the whirlpool cone that disappears is arranged in the two-way cuboid water inlet flow channel of import oviduct below, blade wheel chamber's import connects the import oviduct, blade wheel chamber's outlet connects diffuser, and racemic form, rear water guide cone, outlet loudspeaker pipe are successively set on the top of diffuser.Racemic form is made of wheel hub, blade and shell, the wheel hub of racemic form respectively with the wheel hub of diffuser, rear water guide cone smooth connection, the shell of racemic form respectively with shell and the smooth connection of outlet loudspeaker pipe of diffuser.The wheel hub of racemic form is identical with wheel hub and the housing diameter of diffuser outlet side with housing diameter, the blade of racemic form is the even-even straight blades, the present embodiment adopts two pairs of straight blades (perhaps twisted blade), the blade two side ends is consolidated into an overall structure with wheel hub and shell respectively, and the blade upper and lower end is the oval molded line of pointed cone.The upper limb smooth connection of hump circular casing pressed on ring limit and rear water guide cone, lower ring limit places looping siphon water outlet structure in the cuboid outlet passage, and the outlet passage wall section that the upper limb smooth connection of hump circular casing pressed on ring limit and rear water guide cone consists of is circle or variable curvature camber line.The hump top of annular siphon water outlet structure is established four vent interfaces 8 that are evenly arranged and is connected to vacuum breaker valve.Two-way cuboid water inlet flow channel is identical with length and the width of cuboid outlet passage, and cuboid outlet passage outlet port and two-way cuboid water inlet flow channel two influent sides are provided with gate 9.Anti-whirlpool, the whirlpool cone nut line that disappears adopts 1/4th oval camber line or variable curvature camber line, disappearing, cone bottom diameter is bored in anti-whirlpool, whirlpool and vertex of a cone diameter ratio is 7.00, the bus of import oviduct is similar to anti-whirlpool, the whirlpool element of a cone line style that disappears, import oviduct bus root edge is along connecing 1/4th ellipse or variable curvature curve, and the import oviduct is " gentleman's cap " shape; Be 0.50 times of impeller nominal diameter with water inlet flow channel base plate spacing at the bottom of the import oviduct, import oviduct admission section diameter is identical with the bottom surface diameter that bore in anti-whirlpool, the whirlpool that disappears, and is 1.50 times of impeller nominal diameter.
Pumping plant for different scales, two-way siphon water outlet structure middle outlet oviduct 6, rear water guide cone 7 can adopt steel plate or cast iron to carry out the preprocessing processing and fabricating and install at the scene, can select steel plate or cast iron process for two-way siphon water outlet structure outer wall, or adopt concrete to carry out on-the-spot processing and fabricating and install.Two-way cuboid water inlet flow channel runner wall, the whirlpool that disappears anti-whirlpool cone 1 and import oviduct 2 three parts, can adopt steel plate or cast iron preprocessing to make for big-and-middle-sized pumping plant anti-whirlpool, the whirlpool cone 1 that disappears, or adopting shuttering to carry out concrete cast in situs construction, import oviduct 2 can adopt steel plate or cast iron process to make.For small pumping station, three parts all can take steel plate or cast iron to be made, and soldering is carried out at the scene of transporting to, and constructs simple and convenient.
The vertical arranged just beneath of blade wheel chamber 3 anti-whirlpool, the whirlpool cone 1 that disappears, disappear the center of anti-whirlpool, whirlpool cone 1 and impeller center on the same vertical line, the bottom surface diameter of anti-whirlpool, whirlpool cone of disappearing is identical with the inlet diameter of import oviduct, the bus of anti-whirlpool, whirlpool cone 1 of disappearing adopts 1/4th or variable curvature curve of oval molded line, the bus of import oviduct is similar to anti-whirlpool, the whirlpool element of a cone molded line that disappears, oviduct bus root edge connects 1/4th ellipse or variable curvature curve again, and the import oviduct is " gentleman's cap " shape; Anti-whirlpool, the whirlpool cone 1 that disappears can select concreting to form also can select steel plate or cast iron manufacturing and on-the-spot the installation; The import oviduct adopts steel plate or cast iron manufacturing and on-the-spot the installation.
Method of operation explanation of the present invention:
All arrange gate at two-way cuboid water inlet flow channel and compound Bidirectional water outlet runner both sides, the open and close of its gate are relevant with the operating conditions of pump-unit.If row only need open two side gates of Novel box culvert-type two-way water inflow passage from drawing certainly, current enter Novel box culvert-type two-way water inflow passage from the high side of water level, walk around to enter the low water level side after bore in anti-whirlpool, the whirlpool that disappears, and pump-unit operation signal is shown in Fig. 6 a; If pump drainage is taken out filling, then open as required the water-in and water-out runner gate of asymmetric side, behind the vertical pump unit starting, current enter blade wheel chamber 3 through Novel box culvert-type two-way water inflow passage, after the vane rotary acting, flow out from exit guide vane body 4, further reclaim through racemic form 5 and enter that annular siphon water outlet structure is laggard to be entered in the box culvert-type Bidirectional water outlet runner from gate opening one side inflow water outlet pool after the circular rectors, pump-unit operation signal is shown in Fig. 6 b.If this moment water pump normal shutdown or accidental shutdown, then the vacuum breaker valve of annular siphon water outlet structure is opened, and cuts off current, if water level is in next this side gate of closing rapidly again of superelevation hump situation.
Claims (5)
1. the two-way vertical pump device of umbrella shape, comprise two-way cuboid water inlet flow channel, the cuboid outlet passage, anti-whirlpool, whirlpool cone disappears, the import oviduct, blade wheel chamber, diffuser, anti-whirlpool, the whirlpool cone that disappears is arranged in the two-way cuboid water inlet flow channel of import oviduct below, blade wheel chamber's import connects the import oviduct, blade wheel chamber's outlet connects diffuser, it is characterized in that, be provided with racemic form, annular siphon water outlet structure, rear water guide cone, the outlet loudspeaker pipe, the hump circular casing, racemic form, rear water guide cone, the outlet loudspeaker pipe is successively set on the top of diffuser, described racemic form is by wheel hub, blade and shell consist of, the wheel hub of racemic form respectively with the wheel hub of diffuser, rear water guide cone smooth connection, the shell of racemic form respectively with shell and the smooth connection of outlet loudspeaker pipe of diffuser; The upper limb smooth connection of hump circular casing pressed on ring limit and rear water guide cone, lower ring limit places looping siphon water outlet structure in the cuboid outlet passage, and the hump top of annular siphon water outlet structure is provided with at least two vent interfaces that are evenly arranged and is connected to vacuum breaker valve.
2. the two-way vertical pump device of umbrella shape according to claim 1, it is characterized in that, described two-way cuboid water inlet flow channel is identical with length and the width of cuboid outlet passage, and cuboid outlet passage outlet port and two-way cuboid water inlet flow channel two influent sides are provided with gate.
3. the two-way vertical pump device of umbrella shape according to claim 1, it is characterized in that, described anti-whirlpool, the whirlpool cone nut line that disappears adopts 1/4th oval camber line or variable curvature camber line, disappearing, cone bottom diameter is bored in anti-whirlpool, whirlpool and vertex of a cone diameter ratio is 7.00, the bus of import oviduct is similar to anti-whirlpool, the whirlpool element of a cone line style that disappears, import oviduct bus root edge is along connecing 1/4th ellipse or variable curvature curve, and the import oviduct is " gentleman's cap " shape; Be 0.50 times of impeller nominal diameter with water inlet flow channel base plate spacing at the bottom of the import oviduct, import oviduct admission section diameter is identical with the bottom surface diameter that bore in anti-whirlpool, the whirlpool that disappears, and is 1.50 times of impeller nominal diameter.
4. the two-way vertical pump device of umbrella shape according to claim 1, it is characterized in that, the wheel hub of described racemic form is identical with wheel hub and the housing diameter of diffuser outlet side with housing diameter, the blade of racemic form is straight or twisted blade, the blade two side ends is consolidated into an overall structure with wheel hub and shell respectively, and the blade upper and lower end is the oval molded line of pointed cone.
5. the two-way vertical pump device of umbrella shape according to claim 1 is characterized in that, the outlet passage wall section that the upper limb smooth connection of described hump circular casing pressed on ring limit and rear water guide cone consists of is the form of fracture of circle or variable curvature camber line.
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| CN201210561707.0A CN103047185B (en) | 2012-12-22 | 2012-12-22 | The two-way vertical pump device of umbrella shape |
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| CN201210561707.0A CN103047185B (en) | 2012-12-22 | 2012-12-22 | The two-way vertical pump device of umbrella shape |
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| CN103790838A (en) * | 2014-02-13 | 2014-05-14 | 扬州大学 | Two-way low lift water pumping device shaped like Omega in Greek letters |
| CN105508308A (en) * | 2016-01-28 | 2016-04-20 | 扬州大学 | Novel pumping station water pump beam anti-vortex device and method |
| CN110594201A (en) * | 2019-10-28 | 2019-12-20 | 江苏省水利工程科技咨询股份有限公司 | Box culvert type bidirectional flow channel internal flow line type vortex eliminating structure and vortex eliminating method thereof |
| CN114526392A (en) * | 2022-02-10 | 2022-05-24 | 国网福建省电力有限公司电力科学研究院 | Vortex band device is eliminated in mixing of draft tube |
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| CN114526392A (en) * | 2022-02-10 | 2022-05-24 | 国网福建省电力有限公司电力科学研究院 | Vortex band device is eliminated in mixing of draft tube |
| CN114526392B (en) * | 2022-02-10 | 2023-09-22 | 国网福建省电力有限公司电力科学研究院 | Vortex band eliminating device for mixing of draft tube |
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| CN103047185B (en) | 2015-09-02 |
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