CN110594484B - Secondary rotational flow energy dissipation device for dam conical valve - Google Patents
Secondary rotational flow energy dissipation device for dam conical valve Download PDFInfo
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- CN110594484B CN110594484B CN201910915140.4A CN201910915140A CN110594484B CN 110594484 B CN110594484 B CN 110594484B CN 201910915140 A CN201910915140 A CN 201910915140A CN 110594484 B CN110594484 B CN 110594484B
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- sleeve
- helical blade
- casing
- dam
- cone valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
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Abstract
The utility model provides a second grade whirl energy dissipator for dam cone valve, it belongs to water conservancy and hydropower technical field to solve current cone valve and adopt outside energy dissipation, and the problem of current cone valve energy dissipation inefficiency itself. The invention comprises a shell, a first sleeve, a second sleeve, a first helical blade and a second helical blade; the casing, first sleeve and second sleeve outside-in set gradually and adjacent vacuole formation between the two, the casing, first sleeve and second sleeve three are concentric, the casing, first sleeve and second sleeve all set up the one side in the toper valve export, be provided with first helical blade in the cavity between casing and the first sleeve, first helical blade fixes on the inner wall of casing, cavity between first sleeve and the second sleeve is provided with second helical blade, first helical blade is opposite with second helical blade's the direction of turning round, first helical blade and second helical blade's surface all is provided with a plurality of archs, be provided with the toper guide plate with second sleeve export one side.
Description
Technical Field
The invention belongs to the technical field of water conservancy and hydropower, and relates to an energy dissipation device, in particular to an energy dissipation device for a dam conical valve.
Background
The existing dam cone valve generally adopts the empty discharge or the submerged discharge, high-speed water flow at the outlet of the cone valve is eliminated by means of external energy dissipation measures, and the energy dissipation efficiency of the cone valve is low.
Disclosure of Invention
The invention provides a two-stage rotational flow energy dissipater for a dam cone valve to solve the problems.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the spiral blade type compressor comprises a shell, a first sleeve, a second sleeve, a first spiral blade and a second spiral blade;
the casing, first sleeve and second sleeve outside-in set gradually and adjacent vacuole formation between the two, the casing, first sleeve and second sleeve three are concentric, the casing, first sleeve and second sleeve all set up the one side in the toper valve export, be provided with first helical blade in the cavity between casing and the first sleeve, first helical blade fixes on the inner wall of casing, be provided with second helical blade in the cavity between first sleeve and the second sleeve, first helical blade is opposite with second helical blade's the direction of turning, first helical blade and second helical blade's surface all is provided with a plurality of archs, second sleeve export one side is provided with the toper guide plate with the casing rigid coupling, the tip rigid coupling of toper guide plate has the cross section to be the crown of a circle, the toper guide plate just is certain distance just to just with the tip of second sleeve with the second sleeve.
Further, an end portion of the outlet side of the first sleeve protrudes from an outlet end of the second sleeve.
Further, the middle section of the second sleeve is a corrugated sleeve.
Furthermore, a conical cylinder is fixedly connected to one side of the water inlet of each of the first sleeve and the housing.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the invention is provided with a first helical blade and a second helical blade, the rotation directions of the two helical blades are opposite, high-speed water flow flowing out from a conical valve port respectively enters a cavity between a shell and a first sleeve and a cavity between the first sleeve and a second sleeve, two vortexes with opposite rotation directions are generated by the action of the first helical blade and the second helical blade, a plurality of bulges are arranged on the surfaces of the first helical blade and the second helical blade, the friction of the water flow between the first helical blade and the second helical blade is increased, a part of energy is eliminated, the two helical vortexes with opposite rotation directions disturb through interaction when flowing out from the cavity between the shell and the first sleeve and the cavity between the first sleeve and the second sleeve, the energy of water is further eliminated, and at the moment, the energy of the water sprayed from the cavity between the shell and the first sleeve and the cavity between the first sleeve and the second sleeve is lower, the high-speed water is sprayed out through the second sleeve and is mixed with the water with lower energy in the second sleeve, so that the energy of the high-speed water flow is reduced.
The end part of the guide plate is fixedly connected with a ring plate with a semicircular arc cross section, so that when passing water flows through the conical guide plate, a vortex is formed at the ring plate, the vortex has a disturbance effect on surrounding water, and the energy of water ejection is further reduced.
And thirdly, the invention adopts two helical blades, and the guide plate is arranged at the position right opposite to the second sleeve, so that the water flow is divided into three steps from the center to the outside to dissipate energy one by one, and finally, the water flow is mixed at the outlet.
Drawings
FIG. 1 is a schematic view of the present invention, with the arrows indicating the direction of water flow;
fig. 2 is a plan view of the first helical blade 4.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 and 2, and includes a housing 1, a first sleeve 2, a second sleeve 3, a first helical blade 4, and a second helical blade 5;
the shell 1, the first sleeve 2 and the second sleeve 3 are arranged in sequence from outside to inside, and a cavity is formed between the adjacent two sleeves, the shell 1, first sleeve 2 and 3 three of second sleeve are concentric, casing 1, first sleeve 2 and second sleeve 3 all set up the one side at the toper valve export, be provided with first helical blade 4 in the cavity between casing 1 and the first sleeve 2, first helical blade 4 is fixed on the inner wall of casing 1, cavity between first sleeve 2 and the second sleeve 3 is provided with second helical blade 5, first helical blade 4 is opposite with second helical blade 5's the soon, first helical blade 4 and second helical blade 5's surface all is provided with a plurality of archs 9, 3 export one side of second sleeve is provided with the toper guide plate 7 with casing 1 rigid coupling, the tip rigid coupling of toper guide plate 7 has the cross section to be the crown of a circle 8, toper guide plate 7 just is certain distance just to and with the tip of second sleeve 3 with second sleeve 3.
In the above scheme, the conical surface where the obtuse angle of the conical guide plate 7 is located faces the outlet of the second sleeve 3, and the semi-circular ring plate 8 is bent inwards. The protrusions 9 may be elongated ribs arranged radially along the flight.
The second embodiment is as follows: the present embodiment will be described with reference to fig. 1, in which the end portion of the first sleeve 2 on the outlet side protrudes from the outlet end of the second sleeve 3.
So set up, make casing 1 and the water that first sleeve 2 came out earlier and the water that first sleeve 2 and second sleeve 3 come out mix earlier, form the water that the energy is lower and finally mix with the water that second sleeve 3 came out to reduce the energy of second sleeve 3.
Other components and connections are the same as in the first embodiment.
The third concrete implementation mode: the present embodiment will be described with reference to fig. 1, in which the intermediate section of the second sleeve 3 of the present embodiment is a bellows sleeve.
The corrugated sleeve is arranged, so that water passing through the inner surface and the outer surface of the second sleeve 3 generates rotational flow, the rotational flow can longitudinally disturb the water in the second sleeve 3, and the rotational flow discharged water can transversely shear the rotational flow discharged water between the first sleeve 2 and the second sleeve 3, so that a part of energy of the water can be eliminated; meanwhile, the surface area of the corrugated sleeve is larger than that of a straight cylinder, and partial energy of water can be eliminated through friction.
Other components and connections are the same as in the first embodiment.
The fourth concrete implementation mode: in the present embodiment, a tapered tube 6 is fixed to each of the first sleeve 2, the second sleeve 3, and the housing 1 on the water inlet side, as described with reference to fig. 1.
Set up the energy that a cone 6 on the one hand can absorb partly high-speed water, also play the effect of vortex simultaneously, make and enter into casing 1 and first sleeve 2 in axial rivers and enter into first sleeve 2 and second sleeve 3 in axial rivers respectively with the rivers along the direction of a cone 6 take place disturbance shearing action, make the more abundant energy of absorbing water of first helical blade 4 and second helical blade 5.
Other components and connections are the same as in the first embodiment.
The fifth concrete implementation mode: referring to fig. 1 for the description of the present embodiment, the taper angles α of the respective tapered cylinders 6 of the first sleeve 2, the second sleeve 3 and the housing 1 of the present embodiment are all 15 ° to 45 °.
So set up the energy that can absorb partly high-speed water on the one hand, also play the effect of vortex simultaneously, make and enter into casing 1 and first sleeve 2 in axial rivers respectively with along the rivers emergence disturbance shearing action of the direction of a toper section of thick bamboo 6, make the more abundant energy of absorbing water of first helical blade 4 and second helical blade 5.
Other components and connections are the same as in the first embodiment.
The sixth specific implementation mode: referring to fig. 1, the projection area of the conical baffle 7 in the axial direction is greater than or equal to the cross-sectional area of the outlet of the second sleeve 3.
So set up, play the effect of disturbance energy dissipation to the water that erupts in the second sleeve 3.
Other components and connections are the same as in the first embodiment.
Claims (6)
1. The utility model provides a second grade whirl energy absorber for dam cone valve which characterized in that: the spiral blade type compressor comprises a shell (1), a first sleeve (2), a second sleeve (3), a first spiral blade (4) and a second spiral blade (5);
the casing (1), the first sleeve (2) and the second sleeve (3) are sequentially arranged from outside to inside and form a cavity between the casing (1), the first sleeve (2) and the second sleeve (3) which are concentric, the casing (1), the first sleeve (2) and the second sleeve (3) are all arranged on one side of an outlet of the cone valve, a first helical blade (4) is arranged in the cavity between the casing (1) and the first sleeve (2), the first helical blade (4) is fixed on the inner wall of the casing (1), a second helical blade (5) is arranged in the cavity between the first sleeve (2) and the second sleeve (3), the rotating directions of the first helical blade (4) and the second helical blade (5) are opposite, a plurality of bulges (9) are arranged on the surfaces of the first helical blade (4) and the second helical blade (5), a cone-shaped guide plate (7) fixedly connected with the casing (1) is arranged on one side of the outlet of the second sleeve (3), the end part of the conical guide plate (7) is fixedly connected with a ring plate (8) with a semicircular cross section, and the conical guide plate (7) is opposite to the second sleeve (3) and is away from the end part of the second sleeve (3) by a certain distance.
2. A two-stage vortex energy dissipater for a dam cone valve according to claim 1, wherein: the end of the first sleeve (2) on the outlet side extends out from the end of the second sleeve (3) on the outlet side.
3. A two-stage vortex energy dissipater for a dam cone valve according to claim 1, wherein: the middle section of the second sleeve (3) is a corrugated sleeve.
4. A two-stage vortex energy dissipater for a dam cone valve according to claim 3, wherein: a conical cylinder (6) is fixedly connected to the water inlet side of each of the first sleeve (2) and the shell (1).
5. A two-stage vortex energy dissipater for a dam cone valve according to claim 4, wherein: the cone angle (alpha) of the respective conical cylinders (6) on the first sleeve (2) and the housing (1) is 15-45 degrees.
6. A two-stage vortex energy dissipater for a dam cone valve according to claim 5, wherein: the projection area of the conical guide plate (7) along the axial direction is larger than or equal to the cross-sectional area of the outlet of the second sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910915140.4A CN110594484B (en) | 2019-09-26 | 2019-09-26 | Secondary rotational flow energy dissipation device for dam conical valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910915140.4A CN110594484B (en) | 2019-09-26 | 2019-09-26 | Secondary rotational flow energy dissipation device for dam conical valve |
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| Publication Number | Publication Date |
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| CN110594484A CN110594484A (en) | 2019-12-20 |
| CN110594484B true CN110594484B (en) | 2021-04-23 |
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| CN201910915140.4A Active CN110594484B (en) | 2019-09-26 | 2019-09-26 | Secondary rotational flow energy dissipation device for dam conical valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113309182B (en) * | 2021-06-04 | 2022-06-28 | 中国农业大学 | Blade energy dissipation type stable liquid level adjustable water tank for pipeline transient flow |
| CN113529639B (en) * | 2021-07-22 | 2022-08-02 | 西南石油大学 | Vertical pipe vibration suppression device and method for combined rotation of strake and impeller in mesh enclosure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010230202A (en) * | 2009-03-26 | 2010-10-14 | Jfe Steel Corp | Distributor of single phase flow or multiphase flow |
| CN203477726U (en) * | 2013-09-18 | 2014-03-12 | 杭州宏升塑胶有限公司 | Bottom bracket polypropylene mute drain line system single stand pipe dedicated pipe fitting |
| CN204201266U (en) * | 2014-10-28 | 2015-03-11 | 中阀科技(长沙)阀门有限公司 | With the fixing mitre velve of multistage energy dissipator |
| CN204900177U (en) * | 2015-09-03 | 2015-12-23 | 赵彦成 | Turbulent flow drag reduction supercharging device |
| CN206647608U (en) * | 2017-04-25 | 2017-11-17 | 铁岭特种阀门股份有限公司 | A kind of fixation cone valve with energy dissipating guide vanes |
| CN107906086A (en) * | 2017-10-17 | 2018-04-13 | 常州大学 | A kind of sleeve type spiral flow generating apparatus |
| CN208089633U (en) * | 2018-03-08 | 2018-11-13 | 东莞理工学院 | A kind of pressure separation leaks type water circulating pump regulator |
-
2019
- 2019-09-26 CN CN201910915140.4A patent/CN110594484B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010230202A (en) * | 2009-03-26 | 2010-10-14 | Jfe Steel Corp | Distributor of single phase flow or multiphase flow |
| CN203477726U (en) * | 2013-09-18 | 2014-03-12 | 杭州宏升塑胶有限公司 | Bottom bracket polypropylene mute drain line system single stand pipe dedicated pipe fitting |
| CN204201266U (en) * | 2014-10-28 | 2015-03-11 | 中阀科技(长沙)阀门有限公司 | With the fixing mitre velve of multistage energy dissipator |
| CN204900177U (en) * | 2015-09-03 | 2015-12-23 | 赵彦成 | Turbulent flow drag reduction supercharging device |
| CN206647608U (en) * | 2017-04-25 | 2017-11-17 | 铁岭特种阀门股份有限公司 | A kind of fixation cone valve with energy dissipating guide vanes |
| CN107906086A (en) * | 2017-10-17 | 2018-04-13 | 常州大学 | A kind of sleeve type spiral flow generating apparatus |
| CN208089633U (en) * | 2018-03-08 | 2018-11-13 | 东莞理工学院 | A kind of pressure separation leaks type water circulating pump regulator |
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| CN110594484A (en) | 2019-12-20 |
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