CN104532908A - Telescopic overflow type constant pressure test water supply device - Google Patents
Telescopic overflow type constant pressure test water supply device Download PDFInfo
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- CN104532908A CN104532908A CN201410811509.4A CN201410811509A CN104532908A CN 104532908 A CN104532908 A CN 104532908A CN 201410811509 A CN201410811509 A CN 201410811509A CN 104532908 A CN104532908 A CN 104532908A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/09—Component parts or accessories
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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Abstract
The invention provides a telescopic overflow type constant pressure test water supply device which comprises an organic glass cylinder, a water inlet pipe, a water outlet pipe, a telescopic overflow pipe, a guide pipe, a balancing weight and a lifting unit. The water inlet pipe and the water outlet pipe are communicated with the organic glass cylinder, the telescopic overflow pipe is arranged in the organic glass cylinder, the guide pipe is arranged outside the telescopic overflow pipe in a sleeving mode and is permeable, the balancing weight is connected with the telescopic overflow pipe, and the lifting unit is connected with the balancing weight. The telescopic overflow pipe is composed of multiple layers of nested stainless steel pipes. An overflow opening is formed in the joint of the balancing weight and the outmost stainless steel pipe. An overflow outlet is formed in the bottom of the telescopic overflow pipe. The telescopic overflow type constant pressure test water supply device is small in occupied area and convenient to install, multiple water supply devices can be arranged in a test room at the same time so that multiple sets of tests can be carried out at the same time, and work efficiency is greatly improved. Water supply for constant pressure tests is not influenced by power failures, the water supply flow and the water pressure can be adjusted at will, high-pressure and mass-flow constant pressure water supply is achieved, the test reliability is greatly improved, the stability precision of water pressure is lower than 1 mm, and the test precision is improved.
Description
Technical field
The present invention relates to geotechnical engineering test Instrument technology field, specifically a kind of flexible overflow-type constant voltage test water supply installation.
Background technology
The infiltration of soil and seepage deformation characteristic are one of important physical mechanical properties of soil, are to carry out one of required basic parameter such as Hydraulic and Hydro-Power Engineering hinge osmotic control, basis and seepage of slope stability analysis, the evaluation of building foundation pit osmotic stability, seepage quantity calculation, local ground watering resource management and evaluation etc.Carry out in the process of seepage deformation test, increase gradually from low to high the leakage slope that sample applies, need the constant voltage head of different stage, along with the increase of leakage slope, outflow is corresponding increase also.
The prior art wherein a kind of constant head method of acquisition adopts overflow-type cistern water supply, form primarily of overflow-type water tank, water inlet pipe, outlet pipe, overflow pipe and jacking system, current constantly enter in water tank from water inlet pipe, overflowed by overflow pipe, thus make the head in outlet pipe remain on tank height, by adjusting the height of spill box, obtain the heads at different levels needed for test.The main weak point of this method is: because well-bucket needs oscilaltion, therefore water inlet pipe, outlet pipe, overflow pipe must adopt flexible pipe, the higher flexible pipe of test head is longer, when well-bucket reduces, three flexible pipes are wound around on ground, floor space is large, when arranging this water system of many covers in test room, has a strong impact on test room's environment.When test needs flow very large, water tank volume is limited can not meet water supply requirement, and need the capacity of increase water tank thus weight is increased greatly, it is very inconvenient to be elevated.
Prior art another kind method is electromagnetic-valve control type water system, and its main operational principle is controlled for the water level upper limit in water drum and water level lower limit by needle water level gauge, and its fluctuation range is less than 1mm.Under water level in cylinder is lower than water level in limited time, electromagnetic valve is opened, water inlet in cylinder; When water level in cylinder is prescribed a time limit higher than on water level, closed electromagnetic valve, stop supplying water in cylinder, thus it is constant to realize head.When test water amount is very large, because in cylinder, water level decreasing is very fast, electromagnetic valve may be caused to open continually and affect its application life, at this moment by flow distribution pipe to water supply with interior flow, but ensure to be less than water flow by electromagnetic valve by the water flow of flow distribution pipe, otherwise water level will higher than the needle water level gauge upper limit.The advantage of electromagnetic-valve control type water system is mainly that overcoming overflow bucket type water system water pipe takes up an area and the mutual problem be wound around, and makes test room more attractive in appearance.But also come with some shortcomings part: this system needs electricity and could work, meeting the then test that has a power failure cannot carry out; Electromagnetic valve current when closing and open produce impact force, and cause pressure pulsation, its stable level is not as the box water system of overflow water; The limited flow of electromagnetic valve, when test flow is excessive, current have little time to supplement, and cause water level decreasing; Electromagnetic valve has certain application life, and ultra-long time can open and close inefficacy after using, and when containing too much impurity in water, also easily causing electromagnetic valve to open and close and losing efficacy, needing in addition to be equipped with more complicated power distribution cabinet.
In addition also have and adopt alternating-current frequency-conversion constant-voltage water pump to obtain the method stablizing head, its principle mainly regulates the rotating speed of water pump by frequency converter, thus realizes the automatic regulation function of pressure.When intake pressure is lower than setting pressure, frequency converter frequency increases, and pump rotary speed is accelerated, and pressure of supply water is improved; When intake pressure is higher than setting pressure, frequency converter frequency reduces, and pump rotary speed slows down, and pressure of supply water is reduced, thus makes pressure of supply water be stabilized in setting pressure place.The main weak point that alternating-current frequency-conversion constant-voltage water pump supplies water is that head lasting accuracy is not enough, and when needing flow minimum, system will be thought now not to be needed to supply water, and for saving electric energy and the application life extending pump, water pump will shut down; And if need flow very little, the rotating speed of pump is extremely low, pressure of supply water also can be caused to owe steady, can cause test result and have a strong impact on.
In sum, current existing constant pressure water supply equipment Problems existing mainly contains:
1, conventional overflow-type water tank floor space is large, has a strong impact on test room's environment.
2, limited, the electromagnetic-valve control type water system limited flow of overflow-type water tank volume, can not adapt to the requirement of large discharge constant pressure water supply.
3, when adopting vast capacity water tank, lifting inconvenience is caused because weight is excessive.
4, when adopting electromagnetic valve, alternating-current frequency-conversion constant-voltage water pump, test affects larger by power failure.
5, electromagnetic valve, alternating-current frequency-conversion constant-voltage water pump test head low precision, water pressure fluctuation makes a big impact to test.
Summary of the invention
The invention provides a kind of flexible overflow-type constant voltage test water supply installation, solve the deficiency of constant pressure water supply equipment common at present, floor space is little, simple installation, the impact that water supply is not had a power failure, realize at the stepless voltage regulation of pressure of supply water between 0-maximum pressure, water supply flow and hydraulic pressure can regulate arbitrarily, water pressure lasting accuracy is less than 1mm, can realize the requirement of high pressure, large discharge constant pressure water supply.
A kind of flexible overflow-type constant voltage test water supply installation, comprise organic glass infuser, the water inlet pipe be communicated with organic glass cylinder and outlet pipe, be arranged on the telescopic bleed off pipe in organic glass cylinder, be set in the guide pipe of the outer porous of telescopic bleed off pipe, the balancing weight be connected with telescopic bleed off pipe, the lifting unit be connected with balancing weight, described telescopic bleed off pipe is made up of the stainless steel tube of multilayer nest, described balancing weight is connected with outermost stainless steel tube, the junction of described balancing weight and outermost stainless steel tube is provided with overfall gap, the bottom of described telescopic bleed off pipe is provided with overflow outlet, the stainless steel tube of multilayer nest in described telescopic bleed off pipe can be drawn high or compress by lifting balancing weight by described lifting unit.
Flexible overflow-type constant voltage test water supply installation as above, described telescopic bleed off pipe its height when stretching completely is identical with the height of organic glass cylinder.
Flexible overflow-type constant voltage test water supply installation as above, in described telescopic bleed off pipe, every layer of stainless steel tube joint adopts O type seal ring sealing, stainless steel tube end arranges snap ring, to ensure that telescopic bleed off pipe is water-tight while stretching, also each layer stainless steel tube can not be pulled.
Flexible overflow-type constant voltage test water supply installation as above, the pvc pipe that when described guide pipe adopts diameter to compress completely than telescopic bleed off pipe, diameter is bigger, guide pipe is permeable floral tube more than ground, is fluid-tight real pipe at below ground.
Overflow-type constant voltage test water supply installation as above flexible, described lifting unit comprises pulley, wire rope and hoist engine, and hoist engine is connected with one end of wire rope, is connected after the other end of wire rope walks around pulley with described balancing weight.
Flexible overflow-type constant voltage test water supply installation as above, water inlet pipe is provided with water intaking valve, and outlet pipe is provided with outlet valve.
This invention compared with prior art, has obvious advantage, and because floor space is little, simple installation, can arrange multiple stage water supply installation in test room simultaneously, the test of many groups can be carried out simultaneously, substantially increase operating efficiency; The impact that constant voltage test water supply is not had a power failure, water supply flow and hydraulic pressure can regulate arbitrarily, and realize high pressure, large discharge constant pressure water supply, test reliability improves greatly; Water pressure lasting accuracy is less than 1mm, improves test accuracy.
Accompanying drawing explanation
Fig. 1 be the present invention stretch overflow-type constant voltage test water supply installation structural representation, wherein telescoping tube is complete compressive state;
Fig. 2 is part A enlarged diagram in Fig. 1;
Fig. 3 be the present invention stretch overflow-type constant voltage test water supply installation another structural representation, wherein telescoping tube is complete extended state;
Fig. 4 is part B enlarged diagram in Fig. 2.
In figure: 1-organic glass cylinder; 2-guide pipe; The telescopic bleed off pipe of 3-; 4-water inlet pipe; 5-water intaking valve; 6-outlet pipe; 7-outlet valve; 8-overflow exports; 9-balancing weight; 10-constant water level; 11-ceiling; 12-pulley; 13-wire rope; 14-hoist engine; 15-handle; 16-electric winch switch; 17-ground; 18-overfall gap; 19-O type seal ring; 20-snap ring; 21-glass infuser pedestal; 22-gutter.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described.
Please refer to Fig. 1, the invention provides a kind of flexible overflow-type constant voltage test water supply installation, comprise organic glass infuser 1, the water inlet pipe 4 be communicated with organic glass cylinder 1 and outlet pipe 6, be arranged on the telescopic bleed off pipe 3 in organic glass cylinder 1, be set in the guide pipe 2 of the outer porous of telescopic bleed off pipe 3, the balancing weight 9 be connected with telescopic bleed off pipe 3, the lifting unit be connected with balancing weight 9, described telescopic bleed off pipe 3 is made up of the stainless steel tube of multilayer nest, described balancing weight 9 is connected with outermost stainless steel tube, described balancing weight 9 is provided with overfall gap 18 with the junction of outermost stainless steel tube.Water inlet pipe 4 is provided with water intaking valve 5, and outlet pipe 6 is provided with outlet valve 7.
Wherein in an embodiment, organic glass cylinder 1 diameter 40cm, high 3m, organic glass cylinder 1 is the Primary containers be filled with water.The bottom of organic glass cylinder 1 is provided with glass infuser pedestal 21, and the bottom of described telescopic bleed off pipe 3 is provided with the overflow outlet 8 being arranged in gutter 22, and described gutter 22 is positioned at ground 17 lower position residing for organic glass cylinder 1.
Described telescopic bleed off pipe 3 is core components of this device, be made up of the stainless steel tube of multilayer nest, every layer of stainless steel tube length 60cm, every layer of stainless steel tube joint adopts O type seal ring 19 (as shown in Figure 2 and Figure 4) sealing, in stainless steel tube end, snap ring 20 is set, ensure that telescopic bleed off pipe 3 is water-tight while stretching flexibly, also each layer stainless steel tube can not be pulled.Telescopic bleed off pipe 3 its height when stretching completely is identical with the height of organic glass cylinder 1.In order to ensure the verticality of telescopic bleed off pipe 3 when flexible, outside it, the PVC guide pipe 2 that when diameter compresses completely than telescopic bleed off pipe 3, (as shown in Figure 1) diameter is bigger is set, guide pipe 2 is permeable floral tube more than ground, is fluid-tight real pipe at below ground.
Described lifting unit comprises pulley 12, wire rope 13 and hoist engine 14, and hoist engine 14 is connected with one end of wire rope 13, and the other end of wire rope 13 is walked around pulley 12 and is connected with described balancing weight 9 afterwards.The function of hoist engine 14 is by drawing high or transfer balancing weight 9 to control the overhead height of telescopic bleed off pipe 3, and hoist engine 14 adopts electronic and manual two kinds of mode manipulation, can the overhead height of accurate manipulation bleed off pipe, and precision reaches 1mm.
Its operating principle is: open water intaking valve 5, external water source is allowed to enter in organic glass tank 1 smoothly through water inlet pipe 4, water will flow into in the guide pipe 2 of floral tube, because the junction between balancing weight 9 and telescopic bleed off pipe 3 is provided with overfall gap 18, utilize hoist engine 14 that telescopic bleed off pipe 3 is stretched to certain altitude (as shown in Figure 3), the superfluous water in organic glass cylinder 1 is made to enter telescopic bleed off pipe 3 by overfall gap 18, then discharge from the overflow outlet 8 bottom telescopic bleed off pipe 3, thus make the water level all-the-time stable in organic glass cylinder 1 at telescopic bleed off pipe 3 top, thus constant level in realization cylinder.When test needs different pressure heads, only need the position of continuous adjustment overflow outlet 8, can ensure to test the at different levels stable head pressure needed, guarantee the accurate and complete of experimental data.Outlet pipe 6 joint test instrument, open outlet valve 7 to supply water to test apparatus, because current enter in organic glass tank 1 from water inlet pipe 4 continually, because the water yield of water inlet pipe 4 is larger than the water yield of outlet pipe 6 all the time, unnecessary water is then discharged from telescopic bleed off pipe 3, and the water pressure therefore in test remains constant.
When improving according to the head pressure of test needs, can open electric winch switch 16 drives wire rope 13 to promote telescopic bleed off pipe 3 (precision is 1mm) by hoist engine 14, improve the water level in organic glass cylinder 1, manual adjustment can also be carried out by handle 15.When needing to reduce the water level in organic glass cylinder, loosen wire rope 13 by hoist engine 14, under the effect of balancing weight 9, telescopic bleed off pipe 3 compresses, thus reduces overfall gap 18.
After off-test, open hoist engine 14 and head is slowly reduced, the water in emptying organic glass cylinder 1.
The present invention takes full advantage of overflow weir principle, and available head pressure is accurate to the water supply installation of 1mm, peak level 3m.By increasing organic glass for the height of water drum 1 and the diameter increasing water inlet pipe 4, the flow of higher delivery head can be obtained.Compared with prior art, have obvious advantage, because floor space is little, simple installation, can arrange multiple stage water supply installation in test room simultaneously, the test of many groups can be carried out simultaneously, substantially increase operating efficiency; The impact that constant voltage test water supply is not had a power failure, water supply flow and hydraulic pressure can regulate arbitrarily, and realize high pressure, large discharge constant pressure water supply, test reliability improves greatly; Water pressure lasting accuracy is less than 1mm, improves test accuracy.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly belongs to those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (6)
1. a flexible overflow-type constant voltage test water supply installation, it is characterized in that: comprise organic glass infuser (1), the water inlet pipe (4) be communicated with organic glass cylinder (1) and outlet pipe (6), be arranged on the telescopic bleed off pipe (3) in organic glass cylinder (1), be set in the guide pipe (2) of telescopic bleed off pipe (3) outer porous, the balancing weight (9) be connected with telescopic bleed off pipe (3), the lifting unit be connected with balancing weight (9), described telescopic bleed off pipe (3) is made up of the stainless steel tube of multilayer nest, described balancing weight (9) is connected with outermost stainless steel tube, described balancing weight (9) is provided with overfall gap (18) with the junction of outermost stainless steel tube, the bottom of described telescopic bleed off pipe (3) is provided with overflow outlet (8), the stainless steel tube of multilayer nest in described telescopic bleed off pipe (3) can be drawn high or compress by lifting balancing weight (9) by described lifting unit.
2. flexible overflow-type constant voltage test water supply installation as claimed in claim 1, is characterized in that: described telescopic bleed off pipe (3) its height when stretching completely is identical with the height of organic glass cylinder (1).
3. flexible overflow-type constant voltage test water supply installation as claimed in claim 1, it is characterized in that: in described telescopic bleed off pipe (3), every layer of stainless steel tube joint adopts O type seal ring (19) sealing, and stainless steel tube end arranges snap ring (20).
4. flexible overflow-type constant voltage test water supply installation as claimed in claim 1, it is characterized in that: the pvc pipe that when described guide pipe (2) adopts diameter to compress completely than telescopic bleed off pipe (3), diameter is bigger, guide pipe (2) is permeable floral tube more than ground, is fluid-tight real pipe at below ground.
5. flexible overflow-type constant voltage test water supply installation as claimed in claim 1, it is characterized in that: described lifting unit comprises pulley (12), wire rope (13) and hoist engine (14), hoist engine (14) is connected with one end of wire rope (13), and the other end of wire rope (13) is walked around pulley (12) and is connected with described balancing weight (9) afterwards.
6. flexible overflow-type constant voltage test water supply installation as claimed in claim 1, it is characterized in that: water inlet pipe (4) is provided with water intaking valve (5), outlet pipe (6) is provided with outlet valve (7).
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| CN201410811509.4A CN104532908B (en) | 2014-12-22 | 2014-12-22 | A kind of flexible overflow-type constant voltage test water supply installation |
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| CN201410811509.4A CN104532908B (en) | 2014-12-22 | 2014-12-22 | A kind of flexible overflow-type constant voltage test water supply installation |
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| CN104532908A true CN104532908A (en) | 2015-04-22 |
| CN104532908B CN104532908B (en) | 2016-02-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104881051A (en) * | 2015-06-18 | 2015-09-02 | 河海大学 | Self-elevating irrigation water volume accurate metering and control device |
| CN109470621A (en) * | 2018-12-13 | 2019-03-15 | 重庆科技学院 | A kind of measuring device for formation permeability |
| CN112067529A (en) * | 2020-10-12 | 2020-12-11 | 长沙理工大学 | Permeable asphalt concrete permeability testing device and method |
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| CN103439237A (en) * | 2013-08-30 | 2013-12-11 | 山东大学 | Blocking test device and method for water-permeable concrete pile in piping soil foundation |
| CN203672758U (en) * | 2014-01-16 | 2014-06-25 | 内蒙古自治区林业科学研究院 | Sandy soil water infiltration rapid test device |
| CN204326162U (en) * | 2014-12-22 | 2015-05-13 | 长江水利委员会长江科学院 | Flexible overflow-type constant voltage test water supply installation |
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2014
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Patent Citations (5)
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| KR100620361B1 (en) * | 2006-05-27 | 2006-09-11 | 주식회사 한국종합기술 | Field penetrability test method using floating tester |
| CN202018415U (en) * | 2010-12-03 | 2011-10-26 | 安徽理工大学 | Aquifer parameter testing device under simulated water pumping conditions |
| CN103439237A (en) * | 2013-08-30 | 2013-12-11 | 山东大学 | Blocking test device and method for water-permeable concrete pile in piping soil foundation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104881051A (en) * | 2015-06-18 | 2015-09-02 | 河海大学 | Self-elevating irrigation water volume accurate metering and control device |
| CN109470621A (en) * | 2018-12-13 | 2019-03-15 | 重庆科技学院 | A kind of measuring device for formation permeability |
| CN109470621B (en) * | 2018-12-13 | 2021-01-26 | 重庆科技学院 | Measuring device for rock stratum permeability |
| CN112067529A (en) * | 2020-10-12 | 2020-12-11 | 长沙理工大学 | Permeable asphalt concrete permeability testing device and method |
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| CN104532908B (en) | 2016-02-10 |
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