CN102150601A - Microirrigation countercurrent energy-dissipation pressure regulator - Google Patents

Microirrigation countercurrent energy-dissipation pressure regulator Download PDF

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Publication number
CN102150601A
CN102150601A CN 201110103080 CN201110103080A CN102150601A CN 102150601 A CN102150601 A CN 102150601A CN 201110103080 CN201110103080 CN 201110103080 CN 201110103080 A CN201110103080 A CN 201110103080A CN 102150601 A CN102150601 A CN 102150601A
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China
Prior art keywords
water
pressure regulator
pressure
slight irrigation
housing
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CN 201110103080
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Chinese (zh)
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CN102150601B (en
Inventor
白丹
郭霖
宋立勋
党志良
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Xian University of Technology
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Xian University of Technology
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Publication of CN102150601B publication Critical patent/CN102150601B/en
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Abstract

The invention discloses a microirrigation countercurrent energy-dissipation pressure regulator, which comprises a shell, wherein the shell is internally and sequentially provided with a tapered water-penetrating member and a tapered water-retaining member through an installing plate, opening ends of the tapered water-penetrating member and the tapered water-retaining member face towards a water inlet end of the shell, a water-penetrating hole is arranged on the water-penetrating member, and water flow gaps are formed between the side edge of the water-penetrating member and the side wall of the water-penetrating member and between the side edge of the water-retaining member and the side wall of the water-penetrating member. The invention has the advantages of simple structure and good pressure-regulating effect, and solves the problems of easy failure, short service life and high cost in the prior art.

Description

Slight irrigation adverse current energy dissipating pressure regulator
Technical field
The invention belongs to water conservancy slight irrigation equipment technical field, be specifically related to a kind of slight irrigation adverse current energy dissipating pressure regulator.
Background technology
Irrigation system is made up of water source, head pivot, pipe network and irrigator.Head pivot comprises pressure pump, filter and fertilizer apparatus, and pipe network is made up of main, arm and hollow billet.Arm and hollow billet are formed the field pipe network; Irrigator is installed on the hollow billet.According to the irrigator form that adopts, slight irrigation can be further divided into drip irrigation, microspray irrigation and tubelet effluent irrigation etc. again.
Because landform drop, the pipe network loss of flood peak, arm rotation flow and multiple factor such as pour water at random, slight irrigation ductwork pressure luffing is bigger, and is general by at arm and hollow billet import setting pressure adjuster (also claiming flow regulator), eliminates unnecessary pressure.At hollow billet import department setting pressure adjuster, the pressure between can balanced slight irrigation field each irrigator of pipe network improves the uniformity of irrigation water appilcation of field pipe network; At arm import setting pressure adjuster, can reduce the field ductwork pressure; Pressure regulator downstream arm and hollow billet just can use thin-wall pipes, reduce the pipe network investment; The setting pressure adjuster can reduce ductwork pressure, prevents that pipe explosion accident from taking place.
The slight irrigation voltage-regulating technique can be divided into following a few class both at home and abroad:
(1) slight irrigation pressure regulator
The slight irrigation pressure regulator also claims the slight irrigation flow regulator.Mostly that adopts in the slight irrigation engineering at present is the direct-acting type pressure adjuster, and the pressure regulator of this type by the elastomer in the adjuster, is regulated the size of the runner cross-section of river, makes outlet pressure keep a constant relatively regulator.
Patent name is that " water-saving irrigation pressure regulator " (patent No. is ZL00205555.4, open day is on November 29th, 2000, publication number is CN2407577) disclosed pressure regulator is in when work, press water enters from import, flow out through valve core case, spool, enter downstream line, when import hydraulic pressure increases, downstream pressure water reacts on spool end, and compression spring promotion spool moves, make the cross-section of river at valve core case and spool place reduce, local head loss increases, thereby reduces outlet hydraulic pressure.The characteristics of this pressure regulator are upstream pressures when bigger variation is arranged, and downstream pressure remains unchanged substantially.This class is regulated the pressure regulator of the cross-section of river by spring stress, and is generally bigger by flow, is used for slight irrigation arm import department more.People such as Tian Jinxia and Gong Shihong (sees Tian Jinxia, Gong Shihong, Li Guangyong, Wang Jiandong,. slight irrigation pressure regulator parameter is to the research [J] of outlet set pressure influence. Transactions of the Chinese Society of Agricultural Engineering, 2005,12) and Zang Lihua, Niu Wenquan and Wu Pu top grade people (see exploitation of drip irrigation system arm pressure regulator and experimental study [D]. Xibei Univ. of Agricultural ﹠ Forest Science ﹠ Technology, 2006) this slight irrigation pressure regulator is improved, but its basic functional principle is identical.The slight irrigation pressure regulator flow of this type is at 1000~3000L/h, inlet pressure 0.3~0.7MPa, and about outlet pressure 0.15MPa, the fluidised form index is at 0.1-0.2.
Patent name is that " compensation slight irrigation flow straightener " (patent No. is ZL97214517.6, open day is on October 24th, 1998, publication number is CN2293938) the compensation slight irrigation flow regulator of disclosed domestic first generation hollow billet level, regulate flow by elastic film change cross-section of river size and shape.Sheet rubber when service pressure in the flow regulator is in normal operating conditions, and the flow that passes through is desired flow; When water pressure increased, hydraulic pressure forced the sheet rubber distortion, and the cross-section of river diminishes, and has limited current and has passed through, and it is constant that the flow maintenance is stablized, and had guaranteed the uniformity of the stable and irrigator flow of system's pipe network flows at different levels.This class pressure regulator principle is similar, mainly is to regulate flow by elastic film change cross-section of river size and shape, is installed in hollow billet import department in the use, regulates the hollow billet inlet pressure.Flow 100~the 200L/h of this hollow billet level slight irrigation flow regulator, inlet pressure 0.2~0.4MPa, outlet pressure 0.05~0.10MPa, the fluidised form index index of discharge about 0.1.
External pressure regulator product is mainly produced by companies such as RAINBIRD, NATEFIM and NELSON, default (import) pressure limit 0.04-0.45MPa, they have formed series of products, can satisfy different flow and pressure regulation requirement, but basic functional principle is also all similar with the two class pressure regulators of introducing above.External product is divided by flow low discharge and two kinds of specifications of high flow capacity, the preset pressure that the high flow capacity correspondence is bigger, and price is expensive.
The operation principle of this two classes pressure regulator all is to change cross-section of river size by spring or flexible sheet to regulate pressure, and under the big situation of inlet pressure luffing, outlet pressure and flow luffing are very little, and voltage regulation result is remarkable.Because in the adjuster spring and flexible sheet are arranged, cost is higher; Conditions for equipment use is relatively poor between sewage farming, and spring and flexible sheet are also aging easily, cause equipment failure, and shorten service life.
(2) current stabilization threeway
The current stabilization threeway (is seen Liu Huanfang, Li Jiajie, Wang Jun etc.The development of hollow billet current stabilization threeway and discussion [J].Water-saving irrigation, 2003,2) relatively simple for structure, it is by housing, threeway, sealing shroud, and core print seat, M type flexible sheet are formed, and wherein constitute flow straightener by core print seat and M type flexible sheet.When working-pressure head increased, M type flexible sheet was bent downwardly discharge section area is reduced, and the pressure loss increases, and flow velocity increases, and flow remains unchanged; Otherwise when working-pressure head reduced, then discharge section area increased, and the pressure loss reduces, and flow velocity reduces, and flow then remains unchanged, thereby guaranteed the stable of capillary pressure head and flow.The form of current stabilization threeway water inlet is a spigot-and-socket, is convenient to be connected with arm, and there is the spinning lid in the exit in order to the irrigate band that is tightly connected.Operation principle is similar with the pressure regulator that has flexible sheet in fact, only exactly threeway and pressure regulator has been integrated.
(3) surge pipe
Surge pipe (is seen the farming system of appointing national minority hereditary headmen in the Yuan, Ming and Qing Dynasties of Ministry of Water Resources.Slight irrigation engineering [M].Beijing: Chinese Water Conservancy water power publishing house, 1998) claiming water resistance pipe or energy dissipating pipe again, is that in hollow billet import department one section diameter to be installed be 4 millimeters PEF plastic tube.Its operation principle is to utilize the tubule of certain-length to produce the unnecessary pressure that frictional head loss is eliminated hollow billet import department, advantage is that cost is low, but because the loss of flood peak of arm and landform change, arm changes greatly along stroke pressure, change along stroke pressure for adapting to this arm, each hollow billet import department surge pipe length difference of arm has strengthened the workload of design and installation, has seldom used now.
To sum up, the operation principle of the main slight irrigation pressure regulator that uses is both at home and abroad at present: by the device of spring or flexible sheet is installed in adjuster inside, change the size of the cross-section of river, increase local head loss, eliminate the unnecessary pressure (energy) of pipeline, realize the purpose of pressure regulation.This class slight irrigation pressure regulator energy dissipating efficient is higher, but also has a series of problems: (a) on the high side, and influence in the slight irrigation pressure regulator and apply on a large scale; (b) complex structure, the farmland environment for use is relatively poor, in the use, slight irrigation pressure regulator long term exposure in the open air, spring fatigue in the pressure regulator or flexible sheet are aging, can cause its pressure regulating performance to reduce, even lose efficacy reduction of service life.
Summary of the invention
The purpose of this invention is to provide a kind of slight irrigation adverse current energy dissipating pressure regulator, it is simple in structure, and voltage regulation result is good, has solved the easy inefficacy that prior art exists, and service life is short, and the high problem of cost.
The technical solution adopted in the present invention is, a kind of slight irrigation adverse current energy dissipating pressure regulator, comprise the housing that can be connected with outside water pipe, by installing plate water spare and water deflector were installed successively in the housing, cross water spare and water deflector is conical in shape, and its both dehisce to hold all towards the water inlet of housing, cross on the water spare and have water hole, at the edge of crossing water spare and the limit wall of housing, and all form the current gap between the limit wall of the edge of water deflector and housing.
Wherein, water spare and water deflector are coaxial with housing excessively.
The quantity of water hole is one and was positioned at the center of water spare.
The water hole of crossing on the water spare is a circular hole.
Housing is a cylinder-like structure.
Crossing water spare is installed in the housing by equally distributed three installing plates.
Water deflector is installed in the housing by equally distributed three installing plates.
Slight irrigation adverse current energy dissipating pressure regulator of the present invention was by setting gradually water spare and water deflector, like this, after current enter housing, can form forward and reverse bimodal current, the mutual blending of the current of both direction, eliminate unnecessary water flow pressure, can realize pressure controlled function.The invention provides the pressure controlled a kind of new approaches of slight irrigation, it is simple in structure, and cost is low, and compares with the pressure regulator of the main use flexible member of prior art, its long service life, and pressure regulation is effective, function-stable.
Description of drawings
Fig. 1 is the structural representation of slight irrigation adverse current energy dissipating pressure regulator of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to view.
Fig. 3 is that the B-B of Fig. 1 is to view.
Wherein, 1. shell, 2. installing plate is 3. crossed water spare, 4. water deflector.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
As Fig. 1, Fig. 2 and shown in Figure 3, slight irrigation adverse current energy dissipating pressure regulator of the present invention comprises the housing 1 of cylinder-like structure water spare 3 and water deflector 4 being installed successively in the housing 1 that it is coaxial with housing 1 to cross water spare 3 and water deflector 4.Wherein, cross water spare 3 and water deflector 4 and be conical in shape, and its both dehisce to hold all towards the water inlet of housing 1, have water hole on the mistake water spare 3, the quantity of water hole is one and was positioned at the center of water spare 3.Water hole is a circular hole.At the edge of crossing water spare 3 and the limit wall of housing 1, and all form the current gap between the limit wall of the edge of water deflector 4 and housing 1.Wherein, crossing water spare 3 and water deflector 4 all is installed in the housing 1 by equally distributed three installing plates 2.
The present invention in use, with the two ends of housing 1 respectively with outside inlet channel, outside outlet conduit is connected, the upstream line current are after entering housing 1, part water continues to flow forward from the current gap between mistake water spare 3 and the housing 1, form the forward current, another part current are flow through by the water hole of crossing water spare 3, after stopping, water deflector 4 flows to the direction of crossing water spare 3, form reverse flow, and with the mutual blending of forward current in the outside of crossing water spare 3, energy attenuating, pressure reduces when making current flow to downstream line after by slight irrigation adverse current energy dissipating pressure regulator of the present invention.
The present invention can also be by having a plurality of water holes crossing on the water spare 3, perhaps/and in housing 1, set gradually a plurality of water spares 3 and/or a plurality of water deflector 4 crossed, the concrete condition when using to be suitable for irrigation system.
The present invention is installed in slight irrigation arm and hollow billet import department, can improve the irrigation system irrigation uniformity, the investment of reduction system, safeguards system safety.

Claims (7)

1. slight irrigation adverse current energy dissipating pressure regulator, it is characterized in that, comprise the housing (1) that can be connected with outside water pipe, by installing plate (2) water spare (3) and water deflector (4) were installed successively in the described housing (1), described water spare (3) excessively and water deflector (4) are conical in shape, and its both the end of dehiscing is all towards the water inlet of described housing (1), the described mistake on the water spare (3) has water hole, cross the edge of water spare (3) and the limit wall of described housing (1) described, and all form the current gap between the limit wall of the edge of described water deflector (4) and described housing (1).
2. according to the described slight irrigation adverse current of claim 1 energy dissipating pressure regulator, it is characterized in that described water spare (3) excessively and water deflector (4) are coaxial with described housing (1).
3. according to claim 1 or 2 described slight irrigation adverse current energy dissipating pressure regulators, it is characterized in that the quantity of described water hole is one and is positioned at the described center of crossing water spare (3).
4. according to claim 1 or 2 described slight irrigation adverse current energy dissipating pressure regulators, it is characterized in that the described water hole of crossing on the water spare (3) is a circular hole.
5. according to the described slight irrigation adverse current of claim 1 energy dissipating pressure regulator, it is characterized in that described housing (1) is a cylinder-like structure.
6. according to the described slight irrigation adverse current of claim 1 energy dissipating pressure regulator, it is characterized in that the described water spare (3) of crossing is installed in the described housing (1) by equally distributed three installing plates (2).
7. according to the described slight irrigation adverse current of claim 1 energy dissipating pressure regulator, it is characterized in that described water deflector (4) is installed in the described housing (1) by equally distributed three installing plates (2).
CN201110103080XA 2011-04-25 2011-04-25 Microirrigation countercurrent energy-dissipation pressure regulator Expired - Fee Related CN102150601B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102500482A (en) * 2011-10-25 2012-06-20 中国农业大学 Laminated self-adaptive drip irrigation emitter and use method thereof
CN102550366A (en) * 2012-01-09 2012-07-11 西安理工大学 Bidirectional water flow channel
CN103016895A (en) * 2012-11-13 2013-04-03 宁波杭州湾新区珠峰企业管理服务有限公司 Pressure regulator for regulating water velocity
CN106122666A (en) * 2016-08-31 2016-11-16 天津江河弘元环境技术研究有限公司 A kind of pipe decompression device
CN110178710A (en) * 2019-07-03 2019-08-30 西安理工大学 A kind of irrigation rig and irrigation method based on the response of root region soil water stress
CN111206654A (en) * 2020-01-18 2020-05-29 顾地科技股份有限公司 Silencing drainage pipe and connecting pipe head
CN111365553A (en) * 2020-04-08 2020-07-03 东北石油大学 Pressure relief buffer device and pressure relief method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH105364A (en) * 1996-06-26 1998-01-13 Iwamoto Shokai:Kk Water pressure regulator foe fire hose
RU2222938C1 (en) * 2002-09-24 2004-02-10 Волгоградская государственная сельскохозяйственная академия Drop irrigation injector
CN101070930A (en) * 2007-06-15 2007-11-14 上海平安高压调节阀门厂 Labyrinth plate for high pressure-difference throttling pressure-reducing and anti-gas-etching low-noise regulation and use thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH105364A (en) * 1996-06-26 1998-01-13 Iwamoto Shokai:Kk Water pressure regulator foe fire hose
RU2222938C1 (en) * 2002-09-24 2004-02-10 Волгоградская государственная сельскохозяйственная академия Drop irrigation injector
CN101070930A (en) * 2007-06-15 2007-11-14 上海平安高压调节阀门厂 Labyrinth plate for high pressure-difference throttling pressure-reducing and anti-gas-etching low-noise regulation and use thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102500482A (en) * 2011-10-25 2012-06-20 中国农业大学 Laminated self-adaptive drip irrigation emitter and use method thereof
CN102550366A (en) * 2012-01-09 2012-07-11 西安理工大学 Bidirectional water flow channel
CN103016895A (en) * 2012-11-13 2013-04-03 宁波杭州湾新区珠峰企业管理服务有限公司 Pressure regulator for regulating water velocity
CN106122666A (en) * 2016-08-31 2016-11-16 天津江河弘元环境技术研究有限公司 A kind of pipe decompression device
CN110178710A (en) * 2019-07-03 2019-08-30 西安理工大学 A kind of irrigation rig and irrigation method based on the response of root region soil water stress
CN111206654A (en) * 2020-01-18 2020-05-29 顾地科技股份有限公司 Silencing drainage pipe and connecting pipe head
CN111365553A (en) * 2020-04-08 2020-07-03 东北石油大学 Pressure relief buffer device and pressure relief method thereof

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