CN2733333Y - Small-sized self-circulating constant pressure water supply system - Google Patents

Small-sized self-circulating constant pressure water supply system Download PDF

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Publication number
CN2733333Y
CN2733333Y CN 200420091081 CN200420091081U CN2733333Y CN 2733333 Y CN2733333 Y CN 2733333Y CN 200420091081 CN200420091081 CN 200420091081 CN 200420091081 U CN200420091081 U CN 200420091081U CN 2733333 Y CN2733333 Y CN 2733333Y
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CN
China
Prior art keywords
water
constant pressure
pressure water
water tank
experimental
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Expired - Fee Related
Application number
CN 200420091081
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Chinese (zh)
Inventor
毛根海
陈少庆
胡卫红
章军军
杨敏丽
胡云进
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Hangzhou Yuanliu Technology Co., Ltd.
Original Assignee
毛根海
陈少庆
胡卫红
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Application filed by 毛根海, 陈少庆, 胡卫红 filed Critical 毛根海
Priority to CN 200420091081 priority Critical patent/CN2733333Y/en
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Publication of CN2733333Y publication Critical patent/CN2733333Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a small-size self-circulation water supply system of constant pressure, which is characterized in that the utility model comprises a water storage tank whose inner portion is provided with a water pump controlled by a control silicon speed regulator of stepless. A constant pressure water tank whose inner portion is provided with a water stabilizing hole board and an overflow board of constant pressure is arranged on an experimental table. The overflow board of constant pressure is provided with a plurality of overflow switches. The side wall of the water tank of constant pressure is provided with an installation position of the experimental pipeline used for installing the experimental pipeline. The other side of the constant pressure water tank is provided with a constant pressure hole. The upper portion of the constant pressure water tank is provided with a dust proofing cover. The bottom portion of the constant pressure water tank is connected with the water inlet pipe and the water back pipe of the water storage tank. A water receiving funnel is arranged on the lower side of the water outlet of the experimental pipeline and is fixed on the experimental table. The lower end outlet of the water receiving funnel is connected with the water storage tank by the water back pipe. The utility model changes the original method of large structure and adopts constant pressure water supply of independent automatic circulation with constant water pressure. The water pump has low noise without rust. The operation is simple and direct. The utility model is suitable for the requirements of modern teaching and also the experimental arrangement field is saved.

Description

Small-sized self-loopa constant pressure water supply system
Technical field
The utility model relates to the experimental measurement instrument, relates in particular to a kind of small-sized self-loopa constant pressure water supply system.
Background technology
Hydraulics and fluid mechanics are main specialized core courses of the many specialties of engineering and polytechnic universities, and modern hydraulics is based upon experiment, theory, calculates on the three big pillars.Therefore, experimental teaching is the important step of hydraulics and fluid mechanics teaching.Constant pressure water supply system is to carry out must equipping of hydraulics and fluid mechanics experiment.
Yet traditional constant pressure water supply system exists certain drawback: one, and the legacy equipment structure is huge, for a constant voltage water level is arranged, must do the special capital construction of water system and overflow system, and floor area is wide, cost of investment is high; Its two, equipment is huge, operation expense is also higher; Its three, legacy equipment provides head too high, the constant voltage that also need reduce pressure during experiment is handled, troublesome poeration is unfavorable for carrying out modern experiment teaching.
Summary of the invention
The purpose of this utility model provides a kind of small-sized self-loopa constant pressure water supply system.
It has water storage box, is provided with water pump in water storage box, and water pump is controlled by the controllable silicon stepless speed adjusting gear; Constant pressure water tank places on the experiment table, be provided with water stabling aperture board, constant voltage overflow plate in the constant pressure water tank, the constant voltage overflow plate is provided with the multiple tracks relief cock, the constant pressure water tank sidewall is provided with the experimental channel installation position, be used to install experimental channel, constant pressure water tank sidewall opposite side is provided with the constant voltage hole, and constant pressure water tank top is provided with dust cap, and the constant pressure water tank bottom joins with the rising pipe and the return pipe of water storage box; The water receiving funnel is at experimental channel water delivering orifice downside, and is fixed on the experiment table, and the outlet of water receiving funnel lower end is connected with return pipe with water storage box.
Advantage of the present utility model:
1) constant pressure water supply system is light and handy, the special capital construction in chamber that need not to experimentize again, and the laboratory is restricted by also no longer in the place;
2) adopt special water pump, low noise, non-corroding;
3) water supply flow stepless speed regulation, experiment water water flow, constant pressure are reliable;
4) provide the constant voltage low water head, can be directly as the head that experimentizes, easy to be directly perceived, and be suitable for the modern teaching requirement.
Description of drawings
Accompanying drawing is to be with small-sized self-loopa constant pressure water supply system structural representation.
Embodiment
Small-sized self-loopa constant pressure water supply system has water storage box 1, is provided with water pump 16 in water storage box, and water pump 16 is by 3 controls of controllable silicon stepless speed adjusting gear; Constant pressure water tank 4 places on the experiment table 2, be provided with water stabling aperture board 6, constant voltage overflow plate 7 in the constant pressure water tank 4, constant voltage overflow plate 7 is provided with multiple tracks relief cock 5, constant pressure water tank 4 sidewalls are provided with experimental channel installation position 8, be used to install experimental channel 13, constant pressure water tank 4 sidewall opposite sides are provided with constant voltage hole 9, and constant pressure water tank 4 tops are provided with dust cap 10, and the rising pipe 12 and the return pipe 11 of constant pressure water tank 4 bottoms and water storage box 1 join; Water receiving funnel 14 is at experimental channel 13 water delivering orifice downsides, and is fixed on the experiment table 2, and the outlet of water receiving funnel 14 lower ends is connected with water storage box 1 usefulness return pipe 15.
The course of work of the present utility model is: establish the experimental channel installation position at the constant pressure water tank sidewall corresponding experimental channel is installed, test water water pump water lift in case in the water storage box, enter constant pressure water tank by rising pipe, in constant pressure water tank, produce a constant head, exceed partly to overflow through return pipe and get back to water storage box by overflow plate, the experiment water body steadily enters experimental channel in the constant pressure water tank behind the steady water of water stabling aperture board, flow through behind the experimental channel, fall by the experimental channel afterbody and to enter the backwater funnel, flow into water storage box through return pipe by the funnel bottom outlet.Use other measurement means simultaneously, various hydraulic performances in the observation experiment pipeline.
Experiment content
The small-sized self-loopa constant pressure water supply system of the utility model is as a water system, can be widely used in the every experiment of hydraulics and fluid mechanics, as the experiment of many research hydraulic phenomenon such as Reynolds experiment, local head loss's experiment, momentum law, energy equation experiment.
Be example now, introduce using method and the function of the small-sized self-loopa constant pressure water supply system of the utility model in hydraulics and the every experiment of fluid mechanics with the reynolds experiment:
1) observes two kinds of fluidised forms.
Start water pump and supply water, make and be filled with water to overflow situation in the constant pressure water tank, after stable, open variable valve slightly, and inject color water, make the color current in line in interior.The laminar flow state of the movement observation in-pipe flow by the color water particle, then, progressively drive big variable valve, the hydraulic characteristic that laminar flow changes to turbulent flow is observed in variation by color water straight line, after treating complete turbulent flow to occur in the pipe, progressively turn down variable valve again, can be observed the hydraulic characteristic that changes laminar flow by turbulent flow into.
2) measure critical Reynolds number, reproduce reynolds experiment overall process then.
A. measure the lower critical Reynolds number
Start water pump and supply water, make and be filled with water to overflow situation in the constant pressure water tank, after stable, open variable valve, make complete turbulent flow in the experimental channel, progressively turn down variable valve again, note, only permitted in the adjustment process to turn down, mustn't open big valve, and behind flow of every adjusting (promptly turning down valve one time), need wait to stablize a period of time and observe its form again, until making the color current just in line, show promptly by turbulent flow just to transfer laminar flow to that can record lower critical Reynolds numerical value this moment is between 2000~2300.And Reynolds the time to draw the lower critical Reynolds number that the garden pipe flows in experiment be 2320, reason is that the lower critical Reynolds number is not to have nothing to do with interference is absolute yet, it is that interference at environment is minimum that Reynolds experimentizes, water body before testing in the water tank just draws through the careful measurement of repeated multiple times under long stable case.And a large amount of experiments of descendant are difficult to repeat to draw the accurate numerical value of reynolds experiment, usually between 2000~2300 owing to be subjected to the environmental interference factor affecting.Therefore, from the engineering practicality, the garden pipe lower critical Reynolds number of introducing in the textbook generally is 2000.If it is too little to record Reynolds number, should drives valve and to turbulent flow, remeasure again.
B. measure and go up critical Reynolds number
Start water pump and supply water, make and be filled with water to overflow situation in the constant pressure water tank, after stable, crack variable valve makes and occurs laminar flow in the pipe, drive big variable valve gradually, note, only permitted out mustn't close minor valve greatly, treat that the color current just scatter, show by laminar flow just to transfer turbulent flow to that the critical NR of going up is promptly arranged.According to measuring, last critical Reynolds number measured value is within 3000~5000 scopes, and with the speed of operation, the turbulent fluctuation degree of water tank, and extraneous interference etc. is closely related.Relevant scholar has done a large amount of tests, have 12000, have 20000, have in addition 40000.In the actual current, interference always exists, and is underrange so go up critical Reynolds number, no practical significance.

Claims (1)

1, a kind of small-sized self-loopa constant pressure water supply system is characterized in that it has water storage box (1), is provided with water pump (16) in water storage box, and water pump (16) is controlled by controllable silicon stepless speed adjusting gear (3); Constant pressure water tank (4) places on the experiment table (2), be provided with water stabling aperture board (6), constant voltage overflow plate (7) in the constant pressure water tank (4), constant voltage overflow plate (7) is provided with multiple tracks relief cock (5), constant pressure water tank (4) sidewall is provided with experimental channel installation position (8), be used to install experimental channel (13), constant pressure water tank (4) sidewall opposite side is provided with constant voltage hole (9), constant pressure water tank (4) top is provided with dust cap (10), and constant pressure water tank (4) bottom joins with the rising pipe (12) and the return pipe (11) of water storage box (1); Water receiving funnel (14) is at experimental channel (13) water delivering orifice downside, and is fixed on the experiment table (2), and the outlet of water receiving funnel (14) lower end is connected with return pipe (15) with water storage box (1).
CN 200420091081 2004-10-12 2004-10-12 Small-sized self-circulating constant pressure water supply system Expired - Fee Related CN2733333Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420091081 CN2733333Y (en) 2004-10-12 2004-10-12 Small-sized self-circulating constant pressure water supply system

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Application Number Priority Date Filing Date Title
CN 200420091081 CN2733333Y (en) 2004-10-12 2004-10-12 Small-sized self-circulating constant pressure water supply system

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100416623C (en) * 2006-01-18 2008-09-03 浙江大学 Self-circulation electrical momentum law experimental instrument
CN101561344B (en) * 2009-05-26 2010-10-20 长江水利委员会长江科学院 Experimental water tank without tail-gate for hydraulics and mud and sand dynamics
CN102004070B (en) * 2009-09-01 2013-08-14 杭州绿洁水务科技有限公司 Detection system of particles in liquid
CN104751730A (en) * 2015-03-27 2015-07-01 杭州源流科技有限公司 Bypass type laminar flow experiment voltage stabilizer and method thereof
CN104778881A (en) * 2015-03-27 2015-07-15 浙江大学 Throttling type bistable on-way resistance experiment instrument and method thereof
CN106035002A (en) * 2016-06-15 2016-10-26 镇江市都市生态农业有限公司 Ecological agriculture water supplying device
CN106485990A (en) * 2016-11-25 2017-03-08 湖州师范学院 A kind of bernoulli equation experiment instrument

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100416623C (en) * 2006-01-18 2008-09-03 浙江大学 Self-circulation electrical momentum law experimental instrument
CN101561344B (en) * 2009-05-26 2010-10-20 长江水利委员会长江科学院 Experimental water tank without tail-gate for hydraulics and mud and sand dynamics
CN102004070B (en) * 2009-09-01 2013-08-14 杭州绿洁水务科技有限公司 Detection system of particles in liquid
CN104751730A (en) * 2015-03-27 2015-07-01 杭州源流科技有限公司 Bypass type laminar flow experiment voltage stabilizer and method thereof
CN104778881A (en) * 2015-03-27 2015-07-15 浙江大学 Throttling type bistable on-way resistance experiment instrument and method thereof
CN106035002A (en) * 2016-06-15 2016-10-26 镇江市都市生态农业有限公司 Ecological agriculture water supplying device
CN106485990A (en) * 2016-11-25 2017-03-08 湖州师范学院 A kind of bernoulli equation experiment instrument
CN106485990B (en) * 2016-11-25 2019-04-09 湖州师范学院 A kind of bernoulli equation experiment instrument

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C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20090911

Address after: Hangzhou City, Zhejiang Province, Xixi Road No. 525, Zhejiang University Science Park building C room 41051, zip code: 310012

Patentee after: Hangzhou Yuanliu Technology Co., Ltd.

Address before: Room 17, No. 154, 46 building 154, Qiushi village, Xihu District, Hangzhou, Zhejiang, zip: 310013

Co-patentee before: Chen Shaoqing

Patentee before: The root sea

Co-patentee before: Hu Weihong

C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: HANGZHOU YUANLIU TECHNOLOGY CO., LTD.

Free format text: FORMER OWNER: MAO GENHAI

Effective date: 20090911

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20051012

Termination date: 20121012