CN204405232U - A kind of oceanic turbulence fluxplate - Google Patents
A kind of oceanic turbulence fluxplate Download PDFInfo
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- CN204405232U CN204405232U CN201420871391.XU CN201420871391U CN204405232U CN 204405232 U CN204405232 U CN 204405232U CN 201420871391 U CN201420871391 U CN 201420871391U CN 204405232 U CN204405232 U CN 204405232U
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- cylindrical duct
- fluxplate
- temperature sensor
- fast temperature
- turbulence
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Abstract
The utility model provides a kind of oceanic turbulence fluxplate, it comprises fast temperature sensor and acoustic Doppler three-dimensional flow meter, fast temperature sensor is by pop one's head in (37), titanium alloy bending pipe (36), tapered tube (35), first cylindrical duct (34), internal thread snap connector, outside nut (33), second cylindrical duct (32), 3rd cylindrical duct (31) etc. 8 part forms, the pressure casing of fast temperature sensor adopts TC4 titanium alloy bar to process, internal thread snap connector is arranged between tapered tube (35) and the first cylindrical duct (34).This technology can simultaneously, the three-dimensional velocity of the same movement particles of same-point measurement and temperature signal, directly can measure turbulence flux.
Description
Technical field
The utility model belongs to marine survey technology field, is specifically related to a kind of oceanic turbulence fluxplate, its can simultaneously, the speed of the same movement particles of same-point measurement and temperature, can turbulence flux in Measuring Oceanic.
Background technology
The typical ocean observation technology of domestic and international maturation is ocean subsurface buoy technology, such as acoustics doppler knotmeter (ADCP), thermohaline chain etc., these observation technology means can meet the Research Requirements to the large mesoscale dynamic process in ocean substantially, as: the coarse texture analysis etc. of ocean circulation, mesoscale eddy, thermohaline.And the observation of oceanic turbulence microstructure, for research ocean, vertical (according to the close equation in position, the turbulence vortex coefficient of diffusion rate maintained needed for ocean meridian overturning circulation is at least greater than 10
-4m
2/ s), vertical the transporting of material, energy, momentum etc. play key effect.These vertical quantitative examinatioies transported are mainly reflected on the basic concepts such as turbulent flow momentum flux, thermoflux and turbulent closure scheme rate, cause the vertical flux driving mechanism transported to be then the vertical hybrid technology of turbulent flow.
Research for oceanic turbulence momentum flux, thermoflux directly observes based on to turbulent closure scheme, and this is of great significance for improving ocean model Parameterization Scheme tool.In addition, in the geochemistry material recycle processes such as carbon dioxide flux, Nutrients Fluxes, sediment transport and trace element, also decisive role is played.Along with the progress of the development of Marine Sciences, particularly observation technology, make the momentum flux of air base interlayer, thermoflux [Eric et.al., 2004; Fairall et.al.1990], the observation of carbon dioxide flux, Dissolved Oxygen Flux etc. becomes possibility, and comparative maturity at present.But the direct observation of ocean momentum flux, thermoflux, due to the restriction by many factors such as sensor accuracy, sensitivity and sensor normal operating conditionss under high pressure, yet there are no correlation technique report.
In deep sea hot fluid area, the observation for thermoflux has very important scientific meaning, so the research and development for marine ecosystem model is very necessary.But also do not have mature technology scheme to measure to the thermoflux realizing deep sea hot fluid area at present.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of oceanic turbulence fluxplate, its can simultaneously, the speed of the same movement particles of same-point measurement and temperature, utilize eddy-correlation technique directly can measure turbulence flux.Turbulence flux is a physical quantity that can characterize Heat transmission.
According to the technical solution of the utility model, the oceanic turbulence fluxplate provided comprises hydrospace detection fast temperature sensor and three-dimensional point type current meter (ADV) of acoustic Doppler, wherein fast temperature sensor by popping one's head in 37, titanium alloy bending pipe 36, tapered tube 35, first cylindrical duct 34, internal thread snap connector, outside nut 33, second cylindrical duct 32, the 3rd cylindrical duct 31) etc. be made up of 8 parts, the pressure casing of fast temperature sensor adopts TC4 titanium alloy bar to process, and internal thread snap connector is arranged between tapered tube 35 and the first cylindrical duct 34.
Further, the probe 37 of fast temperature sensor is arranged near measurement volumes body, and its diameter is 1.8mm (millimeter).
In fast temperature sensor, between each parts, annexation is as follows: probe 37 inserts in titanium alloy tube 36, titanium alloy tube 36 is inserted in tapered tube 35, tapered tube 35 is connected by internal thread snap connector with the first cylindrical duct 34, the internal thread having one end of male thread to insert the second cylindrical duct 32 in first cylindrical duct 34 is smashed and connects, the male thread simultaneously fixing the other end of the first cylindrical duct 34 and the second cylindrical duct 32, second cylindrical duct 32 by outside nut 33 is again connected with the 3rd cylindrical duct 31 containing interior screw thread.
Preferably, the wall thickness of the first cylindrical duct 34 is 1.2mm; Be provided with circuit in 3rd cylindrical duct 31, and be connected with watertight line.
Further, oceanic turbulence fluxplate comprises three-dimensional flow measuring instrument, the built-in attitude sensor of described three-dimensional flow measuring instrument (IMU), with 100 ~ 250Hz frequency measurement single-point three-dimensional flow, after digital filtering, export the three-dimensional flow data of 1 ~ 64Hz, oceanic turbulence fluxplate attitude can be corrected.
In addition, oceanic turbulence fluxplate comprises 4 withstand voltage titanium alloy battery compartments of 6000 meters of depth of waters further, thickness of pipe 0.8cm, and warehouse internal diameter 61.5mm, useful volume length 460mm can put 2 groups of 450Wh lithium battery groups; Battery compartment is connected with three-dimensional flow measuring instrument main frame Y type watertight line, and every root line has 2 cores, can connect 4 battery compartments simultaneously.Described fast temperature sensor connects the special 8 core interfaces of three-dimensional flow measuring instrument bonnet by withstand voltage watertight line, for data transmission and power demands; The measurement point of fast temperature sensor and three-dimensional flow measuring instrument (containing attitude correction sensor) is same point, and fast temperature sensor sample signal is synchronous with the sampled signal of three-dimensional flow measuring instrument, and sample frequency 1-64Hz is adjustable.
Preferably, fast temperature sensor and three-dimensional flow meter case are formed by TC4 titanic alloy machining, by 316 stainless steel stents, ADV and fast temperature sensor are fixed on support, and ensure that fast temperature sensor probe is positioned on three-dimensional flow measuring instrument measurement point; The impact that the garden post that support arm is formed streams stream field will be ignored at measurement point.
More preferably, above-mentioned oceanic turbulence fluxplate with point observation thermoflux, momentum flux, tubulence energy dissipative shock wave and heat dissipation rate, and can be operated in 1-5000 rice under water.
Oceanic turbulence fluxplate of the present utility model utilizes the three-dimensional point type Flow speed measurer of acoustic Doppler and fast temperature sensor to achieve the direct measurement of the following turbulence flux of sea table.Utilize the battery of ADV self and storer to carry out self-tolerant measurement, the turbulence flux instrument of the present invention's design can be integrated in subsurface buoy and works, and does not need boats and ships to stop in measured zone, eliminates boats and ships to the impact of measuring, and can for a long time, all-weather measurement.The utility model has the advantages that:
1. gather high frequency, high precision velocity and temperature signal by simultaneously, with point, realize the time series measuring turbulence flux under water first.
2. deeply can observe in 1-5000 rice sea.
Accompanying drawing explanation
Accompanying drawing 1 is according to oceanic turbulence fluxplate sensor of the present utility model and measurement point schematic diagram;
Accompanying drawing 2 is turbulence flux visualizer schematic diagram;
Accompanying drawing 3 is fast temperature sensor external structure schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.Additionally, protection domain of the present utility model only should be limited to following concrete structure or parts or design parameter.
The utility model proposes oceanic turbulence fluxplate, utilize fast temperature sensor and three-dimensional flow measuring instrument (the three-dimensional point type current meter of preferred acoustic Doppler, ADV), and by ADV attitude data corrected flow rate data, pulsed by vertical velocity and the method for the vertical turbulence flux in covariance ocean of temperature fluctuation, achieve the measurement that following turbulence flux is shown in sea.Its principle of work is as follows:
Original flow speed data (u, v, w) relative to ADV coordinate system, even if need to carry out coordinate transform ADV coordinate system (x*, y*, z*) to be converted to natural system of coordinates (x, y, z); In natural system of coordinates, z-axis overlaps with vertical direction, and x-axis points to north geographic pole, and true origin and ADV center of gravity overlap; The angle α that x*-z* plane is intersection relative to x-z plane and z-axis measured by the compass utilizing ADV to carry, utilize the angle γ that level measurement x*-y* plane is intersection relative to x-y plane and the x-axis angle β that is intersection and x*-y* plane relative to x-y plane and y-axis, then flow speed data (the u under natural system of coordinates
1, v
1, w
1) can be expressed as:
Because the low-frequency fluctuation in ocean can affect ADV, ADV is caused to addition of three-dimensional translating speed (u
0, v
0, w
0), the flow velocity of actual measuring point is (u
1-u
0, v
1-v
0, w
1-w
0); Then the pulsating quantity u ' of each true velocity is tried to achieve, v ', w ', unit (m/s).
According to eddy-correlation technique, oceanic turbulence thermoflux F
tcan be expressed as:
F in formula
tthe turbulence flux (W/m of measurement point
2), C
pfor the specific heat at constant pressure (J/kg/K) of seawater, ρ is density of sea water (kg/m
3), w ' is the pulsating quantity (m/s) of seawater vertical velocity, and T' is the temperature fluctuation value (K) of measurement point, and upper line represents that seasonal effect in time series is average.The thermoflux in other direction is similar can be obtained.
When the temperature of same movement particles and speed are observed simultaneously, the temperature signal in the rate signal that flow field is surveyed and temperature field has good cross correlation, the speed and temperature signal that observe are described, the while of being substantially, with putting the measurement observed same movement particles.Because the particle of actual observation is comparatively large, be not the particle in ideal, the cross-correlation maximum of such three-dimensional velocity signal and temperature signal is not at zero point, but has some delay.
Oceanic turbulence fluxplate comprises fast temperature sensor, and fast temperature sensor only has 1.8mm diameter near measurement volumes block, and for slim-lined construction can not interference flowing field.Wherein, fast temperature sensor is formed by 8 parts (probe 37, titanium alloy bending pipe 36, tapered tube 35, first cylindrical duct 34, be arranged at internal thread snap connector, outside nut 33, second cylindrical duct 32, the 3rd cylindrical duct 31 between tapered tube 35 and the first cylindrical duct 34).The concrete annexation of fast temperature sensor is as follows: probe 37 inserts in titanium alloy tube 36, titanium alloy tube 36 is inserted in tapered tube 35, first cylindrical duct 34, wall thickness 1.2mm, tapered tube 35 is connected by internal thread snap connector with the first cylindrical duct 34, the internal thread that first cylindrical duct 34 has one end of male thread to insert the second cylindrical duct 32 is smashed and connects, the other end simultaneously fixing the first cylindrical duct 34 and the second cylindrical duct 32, second cylindrical duct 32 male thread by outside nut 33 is again connected with the 3rd cylindrical duct 31 containing interior screw thread.Wherein be provided with circuit in the 3rd cylindrical duct 31, and be connected with watertight line.
Wherein, the pressure casing of fast temperature sensor adopts TC4 titanium alloy bar to process; the bending shell of foremost uses the additional polyester material protection of titanium alloy tube, and fast temperature sensor only has 1.8mm diameter near measurement volumes body, and for slim-lined construction can not interference flowing field.
The three-dimensional point type Flow speed measurer ADV that the utility model uses comprises attitude correction sensor, three-dimensional point type Flow speed measurer (ADV, containing attitude correction sensor) preferably select Notek Products, with 100 ~ 250Hz frequency measurement single-point three-dimensional flow, the three-dimensional flow data of 1 ~ 64Hz are exported after digital filtering, built-in attitude sensor (IMU), can rectify an instrument attitude.Three-dimensional flow is measured under can be used for relative coordinate and natural coordinates.
Oceanic turbulence fluxplate comprises 4 withstand voltage titanium alloy battery compartments of 6000 meters of depth of waters further, thickness of pipe 0.8cm, and warehouse internal diameter 61.5mm, useful volume length 460mm can put 2 groups of 450Wh lithium battery groups; Battery compartment is connected with three-dimensional flow measuring instrument main frame Y type watertight line, and every root line has 2 cores, can connect 4 battery compartments simultaneously.
Fast temperature sensor connects the special 8 core interfaces of three-dimensional point type Flow speed measurer bonnet by withstand voltage watertight line, for data transmission and power demands; The measurement point of fast temperature sensor and three-dimensional point type Flow speed measurer (containing attitude correction sensor) is same point, and fast temperature sensor sample signal is synchronous with the sampled signal of three-dimensional flow measuring instrument, and sample frequency 1-64Hz is adjustable.Fast temperature sensor and three-dimensional flow meter case are formed by TC4 titanic alloy machining, ADV and fast temperature sensor are fixed on support by 316 stainless steel stents, and ensure that fast temperature sensor probe is positioned on three-dimensional flow measuring instrument measurement point; The impact of the peripheral flow stream field that support arm is formed will be ignored at measurement point.
Below according to accompanying drawing, the utility model is described in detail:
Accompanying drawing 1 is according to oceanic turbulence fluxplate schematic diagram of the present utility model, its can simultaneously, same-point measurement movement particles three-dimensional velocity and temperature.In accompanying drawing, 14 is three-dimensional point type current meter sensor measurement point, and fluid-velocity survey point is positioned at 15cm place, Instrument shell front.The x direction speed of (measurement point) measured by three-dimensional point type current meter sensor 11; Y, z direction speed measured respectively by sensor 13,12; Fast temperature sensor probe part 15 is for measuring the temperature signal of measurement point.
Accompanying drawing 2 is turbulence flux visualizer schematic diagram; Reference numeral is as follows: 316 stainless steel stents 21; Three-dimensional point type current meter (ADV) circuit storehouse 22; Fast temperature sensor probe part 23; Battery compartment 24; Nylon bracket 25.
Accompanying drawing 3 is fast temperature sensor external structure schematic diagram, probe 37, titanium alloy bending pipe 36, tapered tube 35, first cylindrical duct 34, internal thread snap connector (between tapered tube 35 and the first cylindrical duct 34 web member) (not marking in Fig. 3), outside nut 33, second cylindrical duct 32, the 3rd cylindrical duct 31.Concrete annexation is as follows: probe 37 inserts in titanium alloy tube 36, titanium alloy tube 36 is inserted in tapered tube 35, first cylindrical duct 34, wall thickness 1.2mm, tapered tube 35 is connected by internal thread snap connector with the first cylindrical duct 34, the internal thread that first cylindrical duct 34 has one end of outer silk to buckle into the second cylindrical duct 32 is smashed and connects, and the male thread simultaneously fixing the other end of the first cylindrical duct 34 and the second cylindrical duct 32, second cylindrical duct 32 by outside nut 33 is again connected with the 3rd cylindrical duct 31 containing interior screw thread.Wherein contain circuit in the 3rd cylindrical duct 31, and be connected with watertight line.
The present invention realizes by the following method: fast temperature sensor (see Fig. 3) is rack-mount, and the signal that fast temperature sensor exports is connected to the AD conversion passage of ADV.The ADV equipment selected answers integrated attitude instrument (IMU) and pressure transducer, there is the AD passage of expansion, have internal storage and preserve measurement data, have communications interface transmission control command and read measurement result, carrying battery can carry out self-tolerant measurement.The three-dimensional acoustics knotmeter ADV of native system, attitude instrument and fast temperature sensor, adopt and synchronously trigger, synchronized sampling, obtains simultaneously and measures the three-dimensional velocity signal of Motion Particles, temperature signal, the attitude signal of three-dimensional acoustics knotmeter ADV and pressure signal (see Fig. 1 and Fig. 2).
When fast temperature sensor measures the temperature of certain observation station with certain frequency, use the three-dimensional velocity with temperature same some water body in ADV device measuring ocean simultaneously, ADV, temperature sensor gather flow velocity, temperature, pressure, the attitude data of tested point with higher Frequency Synchronization, and store.By the depth survey data that pressure data inverting is ADV; Attitude instrument data are utilized to be natural system of coordinates by the three-dimensional flow data transformation under ADV relative coordinate system; (the hanging down) of measured zone is obtained to turbulence flux to the covariance of velocity fluctuation value by (hanging down) under asking temperature fluctuation value and natural system of coordinates.
The turbulence flux instrument of the utility model design, requires that sample frequency is at 1-512Hz, concrete optimum sampling frequency, will fathom the depth of a sea determine according to different observation marine sites and sight.The acoustic sensor that the utility model uses, temperature sensor, can be high pressure resistant, and 1-5000 rice can normally work under water.The diameter of support arm of the utility model design and the distance of observation station, require that stream field will be ignored in the disturbance of observation station.
The utility model three-dimensional flow measuring instrument (ADV) and fast temperature sensor achieve the direct measurement of the following turbulence flux of sea table.Utilize the battery of ADV self and storer to carry out self-tolerant measurement, the turbulence flux instrument of the present invention's design can be integrated in subsurface buoy and works, and does not need boats and ships to stop in measured zone, eliminates boats and ships to the impact of measuring, and can for a long time, all-weather measurement.
The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.This area those skilled in the art are appreciated that when not deviating from the spirit and scope of the present utility model of claims definition, can make various amendment in form and details.
Claims (10)
1. an oceanic turbulence fluxplate, it comprises fast temperature sensor and the three-dimensional point type velocimeter of acoustic Doppler, it is characterized in that, fast temperature sensor is by pop one's head in (37), titanium alloy bending pipe (36), tapered tube (35), first cylindrical duct (34), internal thread snap connector, outside nut (33), second cylindrical duct (32), 3rd cylindrical duct (31) etc. 8 part forms, the pressure casing of fast temperature sensor adopts TC4 titanium alloy bar to process, internal thread snap connector is arranged between tapered tube (35) and the first cylindrical duct (34).
2. according to the oceanic turbulence fluxplate of claim 1, it is characterized in that, the probe (37) of fast temperature sensor is arranged near measurement body, and its diameter is 1.8mm.
3. according to the oceanic turbulence fluxplate of claim 1, it is characterized in that, in fast temperature sensor, between each parts, annexation is as follows: probe (37) inserts in titanium alloy tube (36), titanium alloy tube (36) is inserted in tapered tube (35), tapered tube (35) is connected by internal thread snap connector with the first cylindrical duct (34), the internal thread having one end of male thread to insert the second cylindrical duct (32) in first cylindrical duct (34) is smashed and connects, fix the first cylindrical duct (34) and the second cylindrical duct (32) by outside nut (33) more simultaneously, the male thread of the other end of the second cylindrical duct (32) is connected with the 3rd cylindrical duct (31) containing interior screw thread.
4., according to the oceanic turbulence fluxplate of claim 3, it is characterized in that, the wall thickness of the first cylindrical duct (34) is 1.2mm; Be provided with circuit in 3rd cylindrical duct (31), and be connected with watertight line.
5., according to the oceanic turbulence fluxplate of claim 3, it is characterized in that, oceanic turbulence fluxplate comprises three-dimensional flow measuring instrument further, the built-in attitude sensor of described three-dimensional flow measuring instrument.
6., according to the oceanic turbulence fluxplate of claim 3, it is characterized in that, oceanic turbulence fluxplate comprises 4 withstand voltage titanium alloy battery compartments of 6000 meters of depth of waters further, thickness of pipe 0.8cm, warehouse internal diameter 61.5mm, useful volume length 460mm.
7. according to the oceanic turbulence fluxplate of claim 6, it is characterized in that, described fast temperature sensor connects the special 8 core interfaces of three-dimensional flow measuring instrument bonnet by withstand voltage watertight line.
8., according to the oceanic turbulence fluxplate of claim 6, it is characterized in that, fast temperature sensor and three-dimensional flow meter case are formed by TC4 titanic alloy machining.
9., according to the oceanic turbulence fluxplate of claim 6, it is characterized in that, by 316 stainless steel stents, ADV and fast temperature sensor are fixed on support.
10., according to the oceanic turbulence fluxplate of claim 6, it is characterized in that, be connected with Y type watertight line between battery compartment with three-dimensional flow measuring instrument main frame, every root watertight line has 2 cores.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212152A (en) * | 2018-10-16 | 2019-01-15 | 天津科技大学 | A kind of nearly bottom edge interlayer Dissolved Oxygen Flux measurement method in ocean |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109212152A (en) * | 2018-10-16 | 2019-01-15 | 天津科技大学 | A kind of nearly bottom edge interlayer Dissolved Oxygen Flux measurement method in ocean |
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