CN103345278A - Constant head mass-flow seepage deformation water pressure automatic control device - Google Patents
Constant head mass-flow seepage deformation water pressure automatic control device Download PDFInfo
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- CN103345278A CN103345278A CN2013102557180A CN201310255718A CN103345278A CN 103345278 A CN103345278 A CN 103345278A CN 2013102557180 A CN2013102557180 A CN 2013102557180A CN 201310255718 A CN201310255718 A CN 201310255718A CN 103345278 A CN103345278 A CN 103345278A
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Abstract
A constant head mass-flow seepage deformation water pressure automatic control device comprises a water supply tank, a water inlet pipe is arranged at the bottom of the water supply tank, and the bottom of the water supply tank is communicated with the bottom of a seepage deformation instrument through a water conveying pipe which is provided with a booster pump, an automatic waterflow regulation valve and a pressure gage. The booster pump and the automatic waterflow regulation valve are used for ensuring that constant head mass-flow seepage deformation water with stable pressure is provided for the seepage deformation instrument, and accuracy and stability of experiment data are ensured. A water return pool and a water return pipe with a self-priming pump are arranged to recycling seepage deformation water, and the water resource is saved. Due to the fact that water is recycled in the indoor environment, external water is not needed, water temperature changes in the testing process are effectively controlled, influences of water temperature on a testing result are eliminated, and testing precision is improved. Through the combination of the booster pump, the automatic waterflow regulation valve and the high-precision pressure gage, automatic control is achieved, and labor intensity in the testing process is greatly lowered.
Description
Technical field
The present invention relates to a kind of infiltration water and test field, the particularly big flow seepage deformation of a kind of constant head water pressure automaton.
Background technology
Along with improving constantly of scientific and technological level and mechanization of building operation degree, various native stone materials and native stone composite material apply to earth and rockfill dam dam body reclamation work, because earth and rockfill dam is water retaining structure, it and infiltration, seepage flow are also deposited, there is earth and rockfill dam that infiltration, seepage flow are just arranged, the development history of earth and rockfill dam is exactly the development history of seepage theory and seepage flow control, therefore, guarantees that the buildings seepage stability is matter of utmost importance to ensure safety.
In view of native stone material and native stone composite material to earth and rockfill dam seepage stability security implication, its seepage stability parameter be reflected to specific targets be under the different pressures infiltration coefficient, the infiltration than falling, and in the infiltration and seepage deformation test of earthwork test rule to coarse-grained soil at present, permeability test to coarse-grained soil adopts hydrostatic head method to test, measure its seepage discharge according to different head pressures, thereby the infiltration ratio that calculates under the different pressures falls and infiltration coefficient.
China's existing penetration equipment of measuring coarse-grained soil at present is mainly vertical seepage deformation instrument, and specimen finish is respectively two kinds of 20cm and 30cm, and its water supply installation is formed by supply tank, hoisting frame, proofed sleeve.And there are a lot of weak points in this water supply installation through practical operation for many years: 1, because a large amount of water source of these water supply installation needs provides endlessly, water resource waste is bigger; When 2, promoting head, need testing crew constantly to regulate according to pressure of supply water, expense is time-consuming and head pressure is unstable at every turn, and process of the test is had certain influence; 3, the support of lifting gear, wire rope, pulley be because exposing to the weather in outdoor process for a long time, needs often maintenance and change, and the proofed sleeve that overflow weir outlet simultaneously connects also can wear out and change; 4, owing to the variation of temperature, water temperature differs greatly in the process of the test, and test result is had bigger influence.Existing test need be guaranteed the water yield of per minute 2000ml, and in 3-5 days experimental period cycle, the proof strength height is difficult to guarantee head pressure in long-time process of the test.
Summary of the invention
Technical matters to be solved by this invention provides the big flow seepage deformation of a kind of constant head water pressure automaton, can guarantee to provide the seepage deformation water of the big flow of constant head, pressure stability to the seepage deformation instrument, further seepage deformation water can recycle.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: the big flow seepage deformation of a kind of constant head water pressure automaton, comprise supply tank, the supply tank bottom is provided with water inlet pipe, the bottom of supply tank is communicated with by the bottom of flow pipe with the seepage deformation instrument, and described flow pipe is provided with supercharge pump, automatic flow control valve and tensimeter.
Also be provided with back pool below the seepage deformation instrument, the bottom of supply tank is communicated with back pool by return pipe, and return pipe is provided be used to drawing water to the self-priming pump of supply tank.
The bottom of back pool also is provided with settling pit, and the bottom surface of settling pit is lower than the bottom surface of back pool.
Be provided with overflow weir in the supply tank, the mouth of pipe of water inlet pipe and return pipe is positioned at the influent side of overflow weir, and the mouth of pipe of flow pipe is positioned at the water outlet side of overflow weir.
In the described seepage deformation instrument, be provided with filtering layer, porous disc and test specimen from top to bottom successively, be provided with drainpipe above the test specimen upper surface, the effluent pipe mouth of drainpipe is positioned at the top of back pool.
The mouth of pipe place that return pipe is positioned at back pool is provided with filter screen.
The big flow seepage deformation of a kind of constant head provided by the invention water pressure automaton, by the seepage deformation water that supercharge pump and the automatic flow control valve of setting guarantee to provide the big flow of constant head and pressure stability to the seepage deformation instrument, guarantee the accurate of experimental data and stablize.The back pool that arranges and have the return pipe of self-priming pump can recycling seepage deformation water, has saved water resource.Because water recycles in indoor environment, need not to introduce extraneous water, change thereby effectively controlled the water temperature in the process of the test, eliminate water temperature to the influence of test findings, improve test accuracy.Combination by supercharge pump and automatic flow control valve and high-precision pressure table has realized automatic control, significantly reduces the working strength in the process of the test.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the one-piece construction synoptic diagram of apparatus of the present invention.
Among the figure: supply tank 1, overflow weir 2, water inlet pipe 3, return pipe 4, self-priming pump 5, supercharge pump 6, automatic flow control valve 7, tensimeter 8, back pool 9, settling pit 10, seepage deformation instrument 11, drainpipe 12, test specimen 13, porous disc 14, filtering layer 15, flow pipe 16.
Embodiment
In Fig. 1, the big flow seepage deformation of a kind of constant head water pressure automaton, comprise supply tank 1, supply tank 1 bottom is provided with water inlet pipe 3, the bottom of supply tank 1 is communicated with the bottom of seepage deformation instrument 11 by flow pipe 16, and described flow pipe 16 is provided with supercharge pump 6, automatic flow control valve 7 and tensimeter 8.In use, by the adjusting of automatic flow control valve, make head pressure reach test determination value or setting value; High-precision tensimeter 8 is fluctuation and the stable case of monitoring test pressure in real time.It is that 3 ~ 4.5mm aluminum alloy plate materials processes that supply tank 1 in this example adopts thickness, supply tank physical dimension is length 1200mm, width is 600mm, highly be 500mm, the aperture of 3 diameter 40mm is left in the supply tank bottom, be respectively water inlet pipe 3, the water inlet of return pipe 4 and flow pipe 16 and water delivering orifice, be provided with overflow weir 2 in the supply tank, the physical dimension of overflow weir is length 500mm, width 400mm, highly be 400mm, overflow weir and supply tank bottom seal welding are together, overflow weir in this example adopts the mode of four sides overflow, preferably overflow weir is welded on the centre position of supply tank.The mouth of pipe of water inlet pipe 3 and return pipe 4 is positioned at the influent side of overflow weir 2, and the mouth of pipe of flow pipe 16 is positioned at the water outlet side of overflow weir 2.The overflow weir 2 that arranges can be guaranteed the head of supply tank 1 inside on the one hand, also can make the process of a degassing of water generates on the other hand by overflow weir.Can reduce the cavitation erosion infringement to supercharge pump 6, can guarantee that also test figure is accurate.
Also be provided with back pool 9 below seepage deformation instrument 11, the bottom of supply tank 1 is communicated with back pool 9 by return pipe 4, and return pipe 4 is provided be used to drawing water to the self-priming pump 5 of supply tank 1.Structure thus, in this example, the water that overflows from seepage deformation instrument 11 flow in the back pool 9, is drawn in the back pool 9 by self-priming pump 5 again, and preferred, the bottom of back pool 9 also is provided with settling pit 10, and the bottom surface of settling pit 10 is lower than the bottom surface of back pool 9.Structure thus is used for the silt particle of precipitation seepage deformation water.The physical dimension of the overflow water recovery pond in this example is length 500mm, height 500mm, width 500mm, because the water that overflows may contain the part fine grained soil, therefore a settling pit is set in the bottom of recovery pond, the settling pit position is in a corner of back pool 9, settling pit is below back pool 9 bottoms, and the degree of depth is that 250mm, length and width are 250mm.
In the described seepage deformation instrument 11, be provided with filtering layer 15, porous disc 14 and test specimen 13 from top to bottom successively, be provided with drainpipe 12 above test specimen 13 upper surfaces, the effluent pipe mouth of drainpipe 12 is positioned at the top of back pool 9.The mouth of pipe place that return pipe 4 is positioned at back pool 9 is provided with filter screen.Structure avoids fine grained soil to enter in the return pipe 4 thus, thus wearing and tearing self-priming pump 5.
During test, step is as follows:
1, open the valve of water inlet pipe 3, allow external water source enter overflow weir 2 by water inlet pipe 3 stably, and the water that makes overflow weir 2 slowly, overflow stably, the water surface to be overflowed reaches about 200mm, opens the valve of flow pipe 16.
2, open self-priming electric booster pump 6, head pressure according to testing requirements, regulate setting by automatic flow control valve 7, head pressure is set and is mainly monitored and information feedback by high-precision pressure table 8, in this example, mainly adopts open loop to control automatically, usually after configuring the output pressure of automatic flow control valve 7, adjust the parameter of supercharge pump 6 again, the output pressure that makes the output pressure of supercharge pump 6 be slightly larger than automatic flow control valve 7 gets final product, flow control valve 7 outputs automatically
The current of constant current constant voltage, thus can continue to provide test required head.
3, treat to reach or when satisfying testing requirements, open seepage deformation instrument bottom flow pipe 16 valves by the head pressure of regulating, water is slowly permeated in the test specimen 13 under the head pressure of regulation, thereby realize the process of the test of sample exhaust, saturated and infiltration;
4, the infiltration water after the test is discharged to the back pool 9 from drainpipe 12, after treating that the water that stores in the overflow water back pool 9 can provide the test cycling use of water to require, close the valve of water inlet pipe 3, open the valve of Scroll-tupe self-priming pump 5 and return pipe 4, thereby realize the recycling that repeats of overflow water, finish until experiment work.
Claims (6)
1. the big flow seepage deformation of constant head water pressure automaton, comprise supply tank (1), supply tank (1) bottom is provided with water inlet pipe (3), the bottom of supply tank (1) is communicated with the bottom of seepage deformation instrument (11) by flow pipe (16), it is characterized in that: described flow pipe (16) is provided with supercharge pump (6), automatic flow control valve (7) and tensimeter (8).
2. the big flow seepage deformation of a kind of constant head according to claim 1 water pressure automaton, it is characterized in that: also be provided with back pool (9) in seepage deformation instrument (11) below, the bottom of supply tank (1) is communicated with back pool (9) by return pipe (4), and return pipe (4) is provided be used to drawing water to the self-priming pump (5) of supply tank (1).
3. the big flow seepage deformation of a kind of constant head according to claim 2 water pressure automaton, it is characterized in that: the bottom of back pool (9) also is provided with settling pit (10), and the bottom surface of settling pit (10) is lower than the bottom surface of back pool (9).
4. the big flow seepage deformation of a kind of constant head according to claim 4 water pressure automaton, it is characterized in that: be provided with overflow weir (2) in the supply tank (1), the mouth of pipe of water inlet pipe (3) and return pipe (4) is positioned at the influent side of overflow weir (2), and the mouth of pipe of flow pipe (16) is positioned at the water outlet side of overflow weir (2).
5. the big flow seepage deformation of a kind of constant head according to claim 1 water pressure automaton, it is characterized in that: in the described seepage deformation instrument (11), be provided with filtering layer (15), porous disc (14) and test specimen (13) from top to bottom successively, top at test specimen (13) upper surface is provided with drainpipe (12), and the effluent pipe mouth of drainpipe (12) is positioned at the top of back pool (9).
6. the big flow seepage deformation of a kind of constant head according to claim 1 water pressure automaton, it is characterized in that: the mouth of pipe place that return pipe (4) is positioned at back pool (9) is provided with filter screen.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104237105A (en) * | 2014-09-26 | 2014-12-24 | 葛洲坝集团试验检测有限公司 | Automatic measurement control device for micro-permeability coefficient |
| CN104677803A (en) * | 2015-03-12 | 2015-06-03 | 河南理工大学 | Constant and variable head composite penetration testing device |
| CN105021504A (en) * | 2015-06-16 | 2015-11-04 | 中国地质科学院岩溶地质研究所 | Water head pressure control system and apparatus for pinhole seepage deformation test |
| CN105547962A (en) * | 2016-01-11 | 2016-05-04 | 河南理工大学 | One-dimensional simulation device for migration and transformation of solutes in underground water under high water pressure action |
| CN105606511A (en) * | 2016-01-11 | 2016-05-25 | 河南理工大学 | One-dimensional simulator of solute migration and transformation in deep phreatic water |
| CN105955330A (en) * | 2014-12-04 | 2016-09-21 | 熊达煜 | Automatic control dam water pressure detection device and monitoring method thereof |
| CN106644890A (en) * | 2017-02-10 | 2017-05-10 | 三峡大学 | Device for measuring soil sample permeability coefficient in indoor soil engineering test |
| CN106840998A (en) * | 2017-01-06 | 2017-06-13 | 浙江大学城市学院 | The concrete pressure infiltration experiment device and its operating method of a kind of water temp adjustable |
| CN112986099A (en) * | 2021-03-30 | 2021-06-18 | 中国电建集团西北勘测设计研究院有限公司 | Water supply pressurizing device for ultrahigh water head permeability characteristic test water head and operation method |
| CN114923825A (en) * | 2022-04-29 | 2022-08-19 | 哈尔滨工业大学（深圳） | High-control-precision large-flow high-water-head application device and application method thereof |
| WO2022205549A1 (en) * | 2021-03-30 | 2022-10-06 | 中国电建集团西北勘测设计研究院有限公司 | Multi-purpose permeation deformation test intelligent system and working method thereof |
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Cited By (15)
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| CN105955330B (en) * | 2014-12-04 | 2018-09-25 | 齐齐哈尔市水利勘测设计研究院有限责任公司 | One kind automatically controlling dam hydraulic pressure force checking device and its monitoring method |
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| CN104677803B (en) * | 2015-03-12 | 2017-10-10 | 河南理工大学 | Often, varying head is combined pervasion test device |
| CN104677803A (en) * | 2015-03-12 | 2015-06-03 | 河南理工大学 | Constant and variable head composite penetration testing device |
| CN105021504A (en) * | 2015-06-16 | 2015-11-04 | 中国地质科学院岩溶地质研究所 | Water head pressure control system and apparatus for pinhole seepage deformation test |
| CN105021504B (en) * | 2015-06-16 | 2018-05-29 | 中国地质科学院岩溶地质研究所 | A kind of head pressure control system and device for pin hole seepage deformation test |
| CN105547962A (en) * | 2016-01-11 | 2016-05-04 | 河南理工大学 | One-dimensional simulation device for migration and transformation of solutes in underground water under high water pressure action |
| CN105606511A (en) * | 2016-01-11 | 2016-05-25 | 河南理工大学 | One-dimensional simulator of solute migration and transformation in deep phreatic water |
| CN105606511B (en) * | 2016-01-11 | 2019-02-05 | 河南理工大学 | The One-dimensional simulation device that solute migration converts in deep phreatic water |
| CN106840998A (en) * | 2017-01-06 | 2017-06-13 | 浙江大学城市学院 | The concrete pressure infiltration experiment device and its operating method of a kind of water temp adjustable |
| CN106644890A (en) * | 2017-02-10 | 2017-05-10 | 三峡大学 | Device for measuring soil sample permeability coefficient in indoor soil engineering test |
| CN112986099A (en) * | 2021-03-30 | 2021-06-18 | 中国电建集团西北勘测设计研究院有限公司 | Water supply pressurizing device for ultrahigh water head permeability characteristic test water head and operation method |
| WO2022205549A1 (en) * | 2021-03-30 | 2022-10-06 | 中国电建集团西北勘测设计研究院有限公司 | Multi-purpose permeation deformation test intelligent system and working method thereof |
| CN114923825A (en) * | 2022-04-29 | 2022-08-19 | 哈尔滨工业大学（深圳） | High-control-precision large-flow high-water-head application device and application method thereof |
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Application publication date: 20131009 |