CN101402075B - Triangular circumferential motion drip irrigation douche irrigation device flow passage - Google Patents
Triangular circumferential motion drip irrigation douche irrigation device flow passage Download PDFInfo
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- CN101402075B CN101402075B CN2008102361795A CN200810236179A CN101402075B CN 101402075 B CN101402075 B CN 101402075B CN 2008102361795 A CN2008102361795 A CN 2008102361795A CN 200810236179 A CN200810236179 A CN 200810236179A CN 101402075 B CN101402075 B CN 101402075B
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Abstract
The invention discloses a flow passage of a triangular circumferential flow drip irrigation douche. The flow passage is provided based on the flowing mechanism of a triangular circumferential flow, a sudden expansion tube, and a sudden contraction tube in hydraulics; a sudden expansion triangular flat cylinder, a sudden contraction triangular flat cylinder and a circumferential triangular flat cylinder which is inbuilt between the sudden expansion triangular flat cylinder and the sudden contraction triangular flat cylinder form a flow passage unit; and a plurality of flow passage units are sequentially connected into a whole so as to form the flow passage of the triangular circumferential flow drip irrigation douche. The flow passage of the drip irrigation douche has large overflow cross section and has hydraulic characteristic of the sudden expansion tube, the sudden contraction tube and the triangular circumferential flow; and flow in a main flow region has strong turbulent motion, high-efficiency energy dissipation effect and condensate conveying capacity, thereby strengthening the anti-blocking performance and water irrigating evenness of the drip irrigation douche. The flow passage can construct drip irrigation douches with various structural forms and can be widely suitable for the requirements of irrigating crops and vegetables in large fields and in the forest and fruit industry and the like.
Description
Technical field
The invention belongs to the agricultural water-saving irrigation technical field, relate to the drip emitter runner, be specifically related to triangular circumferential motion drip irrigation douche irrigation device flow passage.
Background technology
Drip irrigation is internationally recognized a kind of high-efficiency water-saving irrigation technique, has to pour water evenly, high-efficiency water-saving joint fertilizer, increasing both production and income, be convenient to advantage such as management, by the countries in the world extensive use.Douche is the core component of drip irrigation technique, and main effect is to make pressure flow pass through inner runner energy dissipating, makes waterflow stabilization, splashes into soil uniformly, to having conclusive effect in cost, the energy consumption of drip irrigation system, the quality of pouring water and service life etc.Factors such as the structure of runner, size have determined it to go out hydraulic performances such as stream stability, anti-stifled ability, and 90% of the loss of flood peak all occurs in the tooth-shape structure place of runner.The structure of existing drip emitter runner is the runner based on various labyrinth structure forms mostly, and the version that has runner both at home and abroad now, specification etc. are improved, and develops the drip emitter based on labyrinth flow-path then.Douche flow passage structure form presents the situation of the labyrinth shape runner of single-mode substantially, has restricted the diversification development and application of drip emitter product, is difficult to adapt to the development of drip irrigation technique and apply.
A trend of drip emitter runner development is to make up good flow passage structure, reduces the fluidised form index, improves douche and goes out to flow stability and uniformity; Increase width of flow path, degree of depth equal section size, dwindle flow channel length, increase the speed and the turbulence level of current, strengthen the anti-stifled ability of runner; Reduce douche operating pressure and cost simultaneously, reduce the drip irrigation system energy and consume and the engineering input.
Summary of the invention
The object of the present invention is to provide a kind of interior current of drip emitter runner that can make to produce strong turbulent fluctuation and eddy current, flow section is big, and anti-stifled ability is strong, and uniform triangular circumferential motion drip irrigation douche irrigation device flow passage drips.
The technical solution that the present invention takes is, a kind of triangular circumferential motion drip irrigation douche irrigation device flow passage, it is characterized in that: the drip emitter runner streams the unit by plural triangle and vertically connects and composes, and each triangle streams the unit and combined by flat cylinder passage of big triangle and built-in wherein the flat cylinder of little triangle with the effect of streaming.
It is the external boundary that the flat cylinder of leg-of-mutton triangle constitutes flow passage unit by a plane projection that each triangle streams the unit, in the flat column body of triangle, place in the other direction the inner boundary that a flat cylinder of little triangle forms flow passage unit, two vary in size, formed irregular passage constitutes triangular circumferential motion drip irrigation douche irrigation device flow passage between the flat cylinder of triangle that direction is an opposite unit; The entrance point of a unit is connected with the port of export of another unit, and several unit are in turn connected into and are integral body, constitutes triangular circumferential motion drip irrigation douche irrigation device flow passage.
Above-mentioned triangular circumferential motion drip irrigation douche irrigation device flow passage, the physical dimension of each flow passage unit can be identical, also can be inequality.Large and small when inequality when the size of flow passage unit, replace arrangement according to 1 large-size units and 1 small size unit, perhaps replace arrangement according to several large-size units and some small sizes unit.
Above-mentioned triangular circumferential motion drip irrigation douche irrigation device flow passage, the import caliber that it is characterized in that each flow passage unit can equate with the outlet caliber, also can be the import caliber greater than the outlet caliber, perhaps the import caliber is less than the outlet caliber.
Above-mentioned triangular circumferential motion drip irrigation douche irrigation device flow passage, the plane projection that it is characterized in that flow passage unit are two one little, one big, that direction is opposite triangles, and little triangle is positioned at big triangle inside.
Adopt the above-mentioned triangular circumferential motion drip irrigation douche irrigation device flow passage of the present invention's structure, it is characterized in that, the characteristic that vertical section has periodic sudden enlargement and dwindles suddenly, has the characteristic that triangle streams simultaneously, the flow channels that formation sudden contraction, sudden expansion, triangulo column stream also is distributed with the tooth-shape structure of arranging in length and breadth in passage; When current flow in two opposite formed complex passages of triangle of direction, dwindle again after the active cross-section sudden enlargement suddenly, flow around triangle cylinder simultaneously, import and export the both sides that reach near triangulo column at flow passage unit and form main flow area, form the vortex at the both wings of runner bellend and the tail end of triangulo column, carry out energy exchange with main flow area, make the current of main flow area form strong turbulent fluctuation, be of value to and wash away runner, improve main flow area solidfied material transport capability, increase the anti-blockage capability of douche; The turbulent fluctuation of current and the tooth-shape structure of arranging have in length and breadth guaranteed that douche has effect of energy dissipation efficiently, help reducing the fluidised form index of douche, and it is more even to drip; Triangular circumferential motion drip irrigation douche irrigation device flow passage is compared with douche runner of the same type, and the cross-section of river significantly increases, and is easy to passing through of impurity in the water, further improves the anti-blockage capability of douche.The present invention can construct the drip emitter of multiple version, can extensively be adapted to the demand that field crop, vegetables and industry of planting forest or fruit tress etc. are irrigated.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the perspective view of the embodiment of the invention 1.
Fig. 2 is the plane projection schematic diagram of the flow passage unit of Fig. 1.
Fig. 3 is the perspective view of the embodiment of the invention 2.
Fig. 4 is the plane projection schematic diagram of the flow passage unit of Fig. 3.
The flat cylinder passage of 1. big triangles among the figure; 2. stream the flat cylinder of little triangle; 3. flow passage unit import; 4. flow passage unit bellend both wings vortex; 5. flow passage unit external boundary; 6. flow passage unit inner boundary; 7. flow passage unit triangulo column wake zone; 8. flow passage unit outlet.
The specific embodiment
Embodiment 1:
With reference to Fig. 1 and Fig. 2, be that leg-of-mutton flow passage unit external boundary 5, plane projection are that leg-of-mutton flow passage unit inner boundary 6, flow passage unit export 8 formed passages and constitute a flow passage unit by flow passage unit import 3, plane projection.The entrance point of a unit is connected with the port of export of another unit, and several unit are in turn connected into and are integral body, constitutes the runner of the triangular circumferential motion drip irrigation douche irrigation device that longitudinally alternately amplifies and dwindle.The inlet diameter of same flow passage unit can equate with outlet diameter, also can be unequal; The size of each flow passage unit can be identical, also can be inequality; Large and small when inequality when the size of flow passage unit, replace arrangement according to 1 large-size units and 1 small size unit, perhaps replace arrangement according to several large-size units and some small sizes unit.
Flow through runner section sudden expansion place and when streaming triangle of current, because of effect of inertia, main flow and wall break away from, both wings and triangulo column tail end at runner sudden expansion end form the vortex, constantly produce vortex in the vortex, its energy is from main flow, thereby constantly consumes the energy of main flow; Vortex region and near, the velocity flow profile on the flow section constantly changes, and also will cause energy loss; The particle of vorticla motion aggravates the turbulence intensity of main flow in the certain limit of downstream constantly by the main flow band downstream, further strengthens energy loss, has guaranteed that runner has high efficiency energy dissipating ability.The exchange of the strong turbulent fluctuation of main flow area, vortex and main flow area energy and quality and the big section that runner had are crossed aquaporin, have strengthened the solidfied material transport capability of runner, have guaranteed that runner has good performance of anti-blockage.
Embodiment 2:
With reference to Fig. 3 and Fig. 4, be the flow passage unit reversed arrangement with the difference of embodiment 1.
Claims (3)
1. triangular circumferential motion drip irrigation douche irrigation device flow passage, it is characterized in that: the drip emitter runner streams the unit by plural triangle and vertically connects and composes, each triangle streams the unit and is combined by flat cylinder passage of big triangle and built-in wherein the flat cylinder of little triangle with the effect of streaming, the plane projection that triangle streams the unit is two one little, one big, that direction is opposite triangles, and little triangle is positioned at big triangle inside.
2. a kind of triangular circumferential motion drip irrigation douche irrigation device flow passage as claimed in claim 1 is characterized in that: the physical dimension that each triangle streams the unit is identical or inequality; Large and small when inequality when the size of streaming the unit, replace arrangement according to 1 large-size units and 1 small size unit, perhaps replace arrangement according to several large-size units and some small sizes unit.
3. a kind of triangular circumferential motion drip irrigation douche irrigation device flow passage as claimed in claim 1 is characterized in that: the import caliber that respectively streams the unit and outlet caliber be for equating, or the import caliber is greater than exporting caliber, or the import caliber is less than exporting caliber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102361795A CN101402075B (en) | 2008-11-25 | 2008-11-25 | Triangular circumferential motion drip irrigation douche irrigation device flow passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102361795A CN101402075B (en) | 2008-11-25 | 2008-11-25 | Triangular circumferential motion drip irrigation douche irrigation device flow passage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101402075A CN101402075A (en) | 2009-04-08 |
| CN101402075B true CN101402075B (en) | 2011-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102361795A Expired - Fee Related CN101402075B (en) | 2008-11-25 | 2008-11-25 | Triangular circumferential motion drip irrigation douche irrigation device flow passage |
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| CN (1) | CN101402075B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101596504B (en) * | 2009-07-01 | 2011-04-06 | 西安交通大学 | Inner tooth-tooth form runner water conservation irrigator |
| CN102430488B (en) * | 2011-09-15 | 2013-07-31 | 中国农业大学 | Sheet irrigator for flood diversion and drip irrigation |
| CN102577912A (en) * | 2012-03-21 | 2012-07-18 | 江苏大学 | Special-shaped streaming trickle irrigation device |
| CN107352272A (en) * | 2017-08-14 | 2017-11-17 | 大连理工大学 | A kind of achievable structure for reducing underwater bubble conveyance loss |
| CN113906981B (en) * | 2021-10-28 | 2022-11-29 | 太原理工大学 | Vortex cavity type drip irrigation emitter |
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2008
- 2008-11-25 CN CN2008102361795A patent/CN101402075B/en not_active Expired - Fee Related
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| CN101402075A (en) | 2009-04-08 |
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Granted publication date: 20110706 Termination date: 20131125 |