CN204116261U - Trend, tendency reoxygenation aptitude tests device in force tidal bore communication process - Google Patents
Trend, tendency reoxygenation aptitude tests device in force tidal bore communication process Download PDFInfo
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- CN204116261U CN204116261U CN201420293560.6U CN201420293560U CN204116261U CN 204116261 U CN204116261 U CN 204116261U CN 201420293560 U CN201420293560 U CN 201420293560U CN 204116261 U CN204116261 U CN 204116261U
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- tidal bore
- steel pipe
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Abstract
Trend, tendency reoxygenation ability on-site testing device in a kind of force tidal bore communication process, for tidal bore section water reoxygenation capability analysis.It is characterized in that: comprise aeration concentrater testing apparatus, Foundation fixing device, dissolved oxygen DO proving installation.Aeration concentrater testing apparatus comprises power supply, inductive means, signal amplification acquisition system, wireless transmitting system, supporting steel pipe, equipment box and shore station, Foundation fixing device comprises steel-pipe pile and screw thread conehead, and dissolved oxygen DO proving installation is included in line style dissolved oxygen tester, probe, ball-type water holding box.Water body and bubble is utilized to have no-voltage output principle through inductive means, test trend, tendency aeration concentrater; Reasonable Arrangement dissolved oxygen DO proving installation, realizes aeration concentrater and dissolved oxygen DO synchro measure, and the force tidal bore trend, tendency reoxygenation ability on-site testing device that the utility model provides synchronously can measure tidal bore trend, tendency reoxygenation ability and aeration concentrater.
Description
Technical field
The utility model relates to the reoxygenation aptitude tests device in a kind of tidal bore, especially tests the on-site testing device of trend, tendency aeration concentrater and reoxygenation ability relation in force tidal bore communication process, belongs to engineering monitoring field.
Background technology
River water dissolved oxygen DO number be one of the important indicator weighing water quality of river.After sewage enters river water, because the oxidation of organic contaminant and the decomposition etc. of bed mud can consume dissolved oxygen DO; Oxygen simultaneously in air also can constantly dissolve in the dissolved oxygen DO in supplementing water in river water, and the latter is referred to as reoxygenation.Existing research shows, other sections in the more same river of water reoxygenation ability of force tidal bore section are much better than.Qiantang Estuary is world-renowned Macro-tidal estuary, and trend, tendency comes interim, moment towering-up together the waterwall of three or four meters high stand on river surface, scene can be observed in trend, tendency Xuan Gun district, has a large amount of bubbles to produce; Because trend, tendency velocity of propagation is fast, minute bubbles were difficult to float on the surface of the water in the short time, extended the stingy residence time of ducking in drink, greatly improved the efficiency of oxygen in water.The reoxygenation ability of trend, tendency can be embodied by the change of water body aeration concentrater in tidal bore communication process.
Up to the present, water body aeration concentrater detects usual means and mainly contains conductance method, image technique, isotope method etc.Conductance type aeration instrument determines aeration concentrater by the resistance detecting current between pair of electrodes, when adopting pair of electrodes in water, measuring point is positioned between electrode and near zone, aeration concentrater field can be measured, but contiguous boundary error is large, when aeration concentrater is greater than 50%, water body will be discontinuous gradually, and become drops, and conductance type aeration instrument measuring error greatly maybe can not be measured; Image technique adopts laser light sheet to irradiate flow field, pickup image, analyzes aeration concentrater, flow velocity and bubble size, is generally applied in flow velocity not high, the occasion that bubble is sparse; Isotope method carries out according to the principle be weakened during gamma-rays penetrating material, has employing time in model clean water experiment, but when field high-speed flow turbulence is violent, a large amount of silt of blending, is difficult to obtain aeration concentrater accurately and reliably.
Force tidal bore section tide high current is anxious, and hydrodynamic force situation is very complicated.Tidal bore water velocity is generally 6 ~ 8m/s, once measure maximal value and reach 12m/s, bore pressure is generally at 20 ~ 30kPa, maximumly reach 70kPa, all more or less there is certain limitation in existing aeration concentrater proving installation, and measuring equipment is used for indoor model test, be difficult to meet on-the-spot force tidal bore exacting terms like this, in addition, in force tidal bore aeration concentrater and the research of reoxygenation ability correlationship, rational synchronous testing device is lacked.
The utility model is for the deficiency of the hydrodynamic property of force tidal bore, riverbed earthen condition and existing aeration concentrater and reoxygenation ability relation test device, have devised the on-site testing device of relation between trend, tendency aeration concentrater and reoxygenation ability in a kind of force tidal bore communication process, for analysis and the research of tidal bore section water reoxygenation ability.
Utility model content
The technical matters that the utility model solves just is to provide the on-site testing device that can obtain relation between aeration concentrater and reoxygenation ability in force tidal bore.
Described device comprises: aeration concentrater testing apparatus, Foundation fixing device, dissolved oxygen DO proving installation.
Described aeration concentrater testing apparatus comprises power supply, inductive means, signal amplification acquisition system, wireless transmitting system, supporting steel pipe, equipment box and shore station, described Foundation fixing device comprises steel-pipe pile and screw thread conehead, and described dissolved oxygen DO proving installation is included in line style dissolved oxygen tester, probe, ball-type water holding box; Power supply is powered to inductive means, signal amplification acquisition system and wireless transmitting system, inductive means have in trend bubble-free through time export varying voltage signal, gather storage after voltage signal amplifies after filtering, shore station carries out message exchange by wireless transmitting system and acquisition system.
Described power supply, adopts the lithium battery connection in series-parallel composition 12V direct current supply mode of small in volume, inverter also can be adopted to provide 220V alternating current.
Described inductive means, is elongated zona columnaris needle point structure, is made up of trilaminate material, skin is stainless steel wall, and center is platinum filament, and middle one deck is insulating material, outer stainless steel and platinum filament is isolated; Because the district's turbulent fluctuation of force tidal bore trend, tendency rotary roll is violent, aeration bubbles size is less, and therefore, for accurately measuring aeration concentrater in water, inductive means diameter should not be greater than 2mm, and for ensureing the rigidity of self, length should not exceed 50mm; Four inductive means are equidistantly arranged in supporting steel pipe one week, the aeration concentrater of synchro measure one point Thursday, needle point direction is consistent with the outer normal direction of steel pipe wall, and inductive means installation site and supporting steel pipe distance from top should be greater than the half of tidal bore height, the steel pipe wall local strengthening of installation site; Stainless steel wall and platinum filament are connected with the both positive and negative polarity of power supply respectively, arrange the test resistance of a 4k ohm between platinum filament and power cathode.
The principle of work of described inductive means is as follows:
Before tidal bore arrives measuring point, needle point is in air, and stainless steel wall and platinum filament are opened a way, test resistance two ends Non voltage output; When tidal bore process, needle point is placed in current, stainless steel wall and platinum filament path, test resistance two ends output voltage; When tidal bore stream nucleus is through needle point, needle point is wrapped up by underwater bubble, and stainless steel wall and platinum filament are opened a way, and test resistance two ends Non voltage output, therefore, by the change of output voltage signal, can analyze the content of tidal bore stream nucleus.
To occurring that the data after magnitude of voltage is analyzed, get the test voltage signal that one section of duration is T, if full section shows as stable magnitude of voltage, then test in the tidal bore of elevation and do not have aeration bubbles, if there is n section null value in voltage signal, every section of null value duration is t
i, then show to there is bubble in tidal bore, aeration concentrater C can be calculated as follows:
By above formula, moving average process is carried out to test data, the change procedure of measuring point aeration concentrater in tidal bore communication process can be obtained.
Described signal amplifies acquisition system, is to carry out filter and amplification to the voltage signal that sensing unit exports, and carries out collection storage to signal, and acquisition system should comprise four passages.
Described wireless transmitting system, test signal is wirelessly transmitted to shore station, avoid the cabling difficulty of wire transmission, easily by problems such as tidal bore damages, within 500m, short range wireless transmission adopts LAN (Local Area Network) WIFI mode, long-distance transmissions adopts the 3G means of communications such as internet WCDMA.
Described supporting steel pipe, for fixing inductive means, support, top equipment box, cabling is arranged in steel pipe, better play supporting role for steel pipe and reduce the interference to tidal bore flow field as far as possible, diameter of steel tube should between 50 ~ 100mm, and steel pipe length should exceed water surface during tidal bore.
Described equipment box, for arranging that power supply, signal amplify acquisition system and wireless transmitting system, be arranged in the top of supporting steel pipe, and exceed the tidal bore water surface, equipment box needs waterproof and dampproof process.
Described shore station, for carrying out signal exchange with korneforos proving installation, when needs are tested, send acquisition instructions, acquisition system gathers voltage signal, and shore station receives collection signal, carries out real-time Treatment Analysis.
Described power supply, signal amplify acquisition system and wireless transmitting system, must good earth.
Described Foundation fixing device, for fixing aeration concentrater testing apparatus, comprises steel-pipe pile and screw thread conehead.Steel-pipe pile internal diameter is slightly larger than the external diameter of supporting steel pipe, and steel-pipe pile top and supporting steel pipe are fixed by socket, and can, according to the test elevation of on-the-spot tidal bore situation flexible inductive means, make it to be in the strong rotary roll district of trend, tendency; Adopt screw thread conehead bottom steel-pipe pile, facilitate steel-pipe pile to screw in riverbed supporting course, maintain the stable of package unit.
Described dissolved oxygen DO proving installation is included in line style dissolved oxygen tester, probe, ball-type water holding box, ball-type water holding box is fixed on supporting steel pipe inside, supporting steel pipe is in the position of fixing ball-type water holding box, meet damp side and carry on the back damp side and respectively open 5 ~ 6mm diameter circular aperture, but hole is communicated with water holding box, soaks full water can't flow into inside steel pipe after supporting steel pipe is immersed in the water in water holding box; Dissolved oxygen probe immerses water holding box Lower Half water through water holding box wall, passes through rubber seal between dissolved oxygen probe and water holding box wall.Utility model people find through test of many times, the dissolved oxygen value only having above mounting means just can make to record is consistent with the dissolved oxygen value in water, if perforate is excessive, because bubble pours in water holding box too much, cause dissolved oxygen probe part measured value in bubble excessive, if perforate is too small, due to bubble, can not to enter the dissolved oxygen value that water holding box records too low.
Described dissolved oxygen DO proving installation amounts to two groups, and one group is arranged on 5cm place under the inductive means of aeration concentrater testing apparatus, and other one group is arranged on depth of water half place before tide.
The utility model has following beneficial effect:
(1) a kind of device of easy on-the-spot test force tidal bore trend, tendency aeration concentrater directly perceived is provided;
(2) a kind of proving installation of force tidal bore trend, tendency reoxygenation ability is provided;
(3) a kind of proving installation simultaneously can measuring aeration concentrater and reoxygenation ability under equivalent environment is provided;
(4) device adopts single-pile foundation and supporting steel pipe to be socketed scheme, not only can flexible point layout elevation, and firmly easy for installation, can adapt to the severe flow condition of force tidal bore.
Accompanying drawing explanation
Fig. 1 is the general arrangement schematic of the utility model device;
Fig. 2 is the inductive means longitudinal profile schematic diagram of the utility model device;
Fig. 3 is the inductive means schematic cross section of the utility model device;
Fig. 4 is the utility model device dissolved oxygen DO proving installation diagrammatic cross-section;
Fig. 5 is the utility model test macro block diagram;
Fig. 6 is the dissolved oxygen DO that records of the utility model and aeration concentrater time chart.
Embodiment
Embodiment one
Trend, tendency aeration concentrater on-site testing device in a kind of force tidal bore communication process, comprises aeration concentrater testing apparatus, Foundation fixing device and dissolved oxygen DO proving installation.Described testing apparatus comprises power supply 1, inductive means 2, stainless steel wall 21, platinum filament 22, insulating material 23, test resistance 24, signal amplification acquisition system 3, wireless transmitting system 4, supporting steel pipe 5, equipment box 6, circuit 7 and shore station 8; Described Foundation fixing device comprises steel-pipe pile 9 and screw thread conehead 10.
, a river course depth of water 2m, tidal bore height 1m, test tidal bore trend, tendency reoxygenation ability.
Power supply 1 is inductive means 2, signal amplifies acquisition system 3 and wireless transmitting system 4 is powered, three test component power sums are within 100w, voltage is 24V, electric current is 30A, power is the direct supply of 720W to adopt lithium battery connection in series-parallel to form, power supply can be powered more than 7h continuously, the electric energy enough once needed for on-the-spot tidal bore aeration concentrater test.
Inductive means 2 is elongated zona columnaris needle point structure, be made up of trilaminate material, skin is stainless steel wall 21, center is platinum filament 22, middle one deck is insulating material 23, outer stainless steel and platinum filament are isolated, stainless steel wall external diameter is 2mm, inductive means length gets 50mm, by four identical inductive means equidistantly (angle 90 °) be arranged in supporting steel pipe 5 one weeks, the aeration concentrater of synchro measure one point Thursday, needle point direction is consistent with the outer normal direction of supporting steel pipe 5 wall, inductive means installation site and supporting steel pipe distance from top get 1m, in sensing element installation site, supporting steel pipe 5 wall local strengthening.Stainless steel wall 21 is connected with the both positive and negative polarity of power supply 1 respectively with platinum filament 22, arranges a test resistance 24 between platinum filament 22 and power supply 1 negative pole.
It is carry out filter and amplification to the voltage signal that inductive means 2 exports that signal amplifies acquisition system 3, and carries out collection storage to signal, and acquisition system 3 should comprise four passages.Test signal is wirelessly transmitted to shore station 8 by wireless transmitting system 4, due to water depth korneforos measuring point comparatively near (being less than 500m), adopts LAN (Local Area Network) WIFI mode to carry out Signal transmissions exchange.Shore station 8, carries out message exchange by wireless transmitting system 4 and acquisition system 3.
Supporting steel pipe 5 is for fixing inductive means 2, and support, top equipment box 6, arrange circuit 7 in supporting steel pipe 5, steel pipe 5 external diameter gets 80mm, and wall thickness 5mm gets steel pipe length 3.5m.Equipment box 6 is positioned at supporting steel pipe 5 top, arranges that power supply 1, signal amplify acquisition system 3 and wireless transmitting system 4 in case.
Foundation fixing device adopts the steel-pipe pile 9 of internal diameter 82mm, wall thickness 5mm, and steel-pipe pile 9 top and supporting steel pipe 5 are fixed by socket, and regulates measuring point distance riverbed 2.5m, makes it to be in the strong rotary roll district of trend, tendency; Adopt screw thread conehead 10 to construct bottom steel-pipe pile 9, facilitate steel-pipe pile to screw in riverbed supporting course, maintain the stable of package unit.
Before tidal bore arrives measuring point, shore station 8 sends instruction, acquisition system 3 starts collection signal, now inductive means 2 is in air, stainless steel wall 21 and platinum filament 22 are opened a way, voltage signal is 0V, when tidal bore arrives, inductive means 2 is in water, stainless steel wall 21 and platinum filament 22 path, export the magnitude of voltage of 2V, when tidal bore stream nucleus is through needle point, needle point is wrapped up by underwater bubble, stainless steel wall 21 and platinum filament 22 are opened a way, voltage signal is 0V, for one of them inductive means, after there is voltage signal, get the data that one section of 1s is long, statistics show that 0V voltage duration summation is 0.45s, then the average aeration concentrater of this section is: C=0.45/1 × 100%=45%, as the aeration concentrater of this section of intermediate time, the change of tidal bore communication process aeration concentrater by moving average by that analogy.
Described dissolved oxygen DO proving installation is included in line style dissolved oxygen tester, probe a1, ball-type water holding box a2, it is inner that ball-type water holding box is fixed on supporting steel pipe 5, supporting steel pipe 5 is in the position of fixing ball-type water holding box a2, meet damp side and carry on the back damp side and respectively open 5 ~ 6mm diameter circular aperture, but hole is communicated with water holding box, soaks full water can't flow into inside steel pipe after supporting steel pipe is immersed in the water in water holding box; Dissolved oxygen probe a1 immerses water holding box a2 Lower Half water through water holding box a2 wall, passes through rubber seal between dissolved oxygen probe a1 and water holding box a2 wall.Utility model people find through test of many times, the dissolved oxygen value only having above mounting means just can make to record is consistent with the dissolved oxygen value in water, if perforate is excessive, because bubble pours in water holding box too much, cause dissolved oxygen probe part measured value in bubble excessive, if perforate is too small, due to bubble, can not to enter the dissolved oxygen value that water holding box records too low.
Described dissolved oxygen DO proving installation amounts to two groups, and one group is arranged on 5cm place under the inductive means of aeration concentrater testing apparatus, and other one group is arranged on depth of water 1m place before tide.
Embodiment two
Utilize the device in embodiment one, adopt following steps:
1) utilize shore station to send instruction and acquisition system is set to stack memory module;
2) arrange stack to store and extend 1 minute forward, frequency acquisition=10Hz, sampling length is set to artificial stopping, and trigger pip is acquisition system first of obtaining is not the voltage signal of 0V;
3) record data and comprise dissolved oxygen value and aeration concentrater.
Claims (5)
1. trend, tendency reoxygenation aptitude tests device in force tidal bore communication process, is characterized in that: comprise aeration concentrater testing apparatus, Foundation fixing device, dissolved oxygen DO proving installation;
Described aeration concentrater testing apparatus comprises power supply, inductive means, signal amplification acquisition system, wireless transmitting system, supporting steel pipe, equipment box and shore station, described Foundation fixing device comprises steel-pipe pile and screw thread conehead, and described dissolved oxygen DO proving installation is included in line style dissolved oxygen tester, probe, ball-type water holding box; Power supply is powered to inductive means, signal amplification acquisition system and wireless transmitting system, and shore station carries out message exchange by wireless transmitting system and acquisition system.
2. trend, tendency reoxygenation aptitude tests device in force tidal bore communication process according to claim 1, is characterized in that: described power supply, adopts the lithium battery connection in series-parallel composition 12V direct current supply of small in volume;
Described inductive means, is elongated zona columnaris needle point structure, is made up of trilaminate material, skin is stainless steel wall, and center is platinum filament, and middle one deck is insulating material, outer stainless steel and platinum filament is isolated; Inductive means diameter is not more than 2mm, and length is not more than 50mm; Inductive means needle point direction is consistent with the outer normal direction of steel pipe wall, and installation site and supporting steel pipe distance from top are greater than the half of tidal bore height.
3. trend, tendency reoxygenation aptitude tests device in force tidal bore communication process according to claim 1, it is characterized in that: described wireless transmitting system, test signal is wirelessly transmitted to shore station, and within 500m, wireless transmission adopts LAN (Local Area Network) WIFI mode, and long-distance transmissions adopts 3G mode.
4. trend, tendency reoxygenation aptitude tests device in force tidal bore communication process according to claim 1, it is characterized in that: described supporting steel pipe, for fixing inductive means, support, top equipment box, cabling is arranged in steel pipe, diameter of steel tube is between 50 ~ 100mm, and steel pipe length exceeds water surface during tidal bore;
Described equipment box, is arranged in the top of supporting steel pipe, exceeds the tidal bore water surface, and carries out waterproof and dampproof process;
Described steel-pipe pile internal diameter is slightly larger than supporting steel pipe external diameter, and steel-pipe pile top and supporting steel pipe are fixed by socket, and adopts screw thread conehead bottom steel-pipe pile.
5. trend, tendency reoxygenation aptitude tests device in force tidal bore communication process according to claim 1, it is characterized in that: described dissolved oxygen DO proving installation, ball-type water holding box is fixed on supporting steel pipe inside, supporting steel pipe, in the position of fixing ball-type water holding box, is met damp side and is carried on the back damp side and respectively open 5 ~ 6mm diameter circular aperture.
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| CN201420293560.6U CN204116261U (en) | 2014-06-04 | 2014-06-04 | Trend, tendency reoxygenation aptitude tests device in force tidal bore communication process |
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| CN201420293560.6U CN204116261U (en) | 2014-06-04 | 2014-06-04 | Trend, tendency reoxygenation aptitude tests device in force tidal bore communication process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970122A (en) * | 2017-05-02 | 2017-07-21 | 中国水利水电科学研究院 | A kind of punching and measurement integrated device for soil moisture measurement |
-
2014
- 2014-06-04 CN CN201420293560.6U patent/CN204116261U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970122A (en) * | 2017-05-02 | 2017-07-21 | 中国水利水电科学研究院 | A kind of punching and measurement integrated device for soil moisture measurement |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20200604 |
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| CF01 | Termination of patent right due to non-payment of annual fee |