CN104316351A - Water sample collector provided with response acceleration mechanism - Google Patents
Water sample collector provided with response acceleration mechanism Download PDFInfo
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- CN104316351A CN104316351A CN201410474698.0A CN201410474698A CN104316351A CN 104316351 A CN104316351 A CN 104316351A CN 201410474698 A CN201410474698 A CN 201410474698A CN 104316351 A CN104316351 A CN 104316351A
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- sampling bottle
- acceleration mechanism
- response acceleration
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 74
- 230000007246 mechanism Effects 0.000 title claims description 35
- 230000001133 acceleration Effects 0.000 title claims description 28
- 230000004044 response Effects 0.000 title claims description 26
- 238000005070 sampling Methods 0.000 claims description 82
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
本发明涉及水样采样器并解决了采样瓶开启不便的问题。一种设有响应加速机构的水样采集器，包括采样瓶、拉索、加重块和响应加速机构，响应加速机构包括竖置的气缸、上驱动杆和下驱动杆，采样瓶的顶壁设有上单向阀，采样瓶的底壁设有下单向阀，上单向阀和下单向阀都包括流道和设置于流道的阀芯，加重块设置于采样瓶的底部，气缸包括缸体和滑动密封连接在缸体内的活塞，缸体和活塞之间形成密封的气腔，缸体同采样瓶固接在一起，下驱动杆的下端穿过气腔后同活塞连接在一起、上端同下单向阀的阀芯连接在一起，上驱动杆的上端同上单向阀的阀芯连接在一起、下端同下单向阀的阀芯连接在一起。本发明具有采样瓶能够自动开合且开合响应时间短的优点。
The invention relates to a water sample sampler and solves the problem of inconvenient opening of a sampling bottle. A water sample collector provided with a response acceleration mechanism, comprising a sampling bottle, a cable, a weight block and a response acceleration mechanism, the response acceleration mechanism includes a vertical cylinder, an upper drive rod and a lower drive rod, the top wall of the sampling bottle is set There is an upper one-way valve, and the bottom wall of the sampling bottle is provided with a lower one-way valve. Both the upper one-way valve and the lower one-way valve include a flow channel and a valve core set in the flow channel. The weight block is set at the bottom of the sampling bottle. It includes a cylinder body and a piston that is sliding and sealed in the cylinder body. A sealed air chamber is formed between the cylinder body and the piston. The cylinder body is fixedly connected with the sampling bottle. The lower end of the lower driving rod passes through the air chamber and is connected with the piston. Together, the upper end is connected together with the spool of the lower one-way valve, the upper end of the upper drive rod is connected together with the spool of the upper one-way valve, and the lower end is connected together with the spool of the lower one-way valve. The invention has the advantages that the sampling bottle can be opened and closed automatically and the opening and closing response time is short.
Description
Technical field
The present invention relates to water sampling device, particularly relate to a kind of water sampler being provided with response acceleration mechanism.
Background technology
In the detection of water quality, ensure the water sample taked representative be one of important step of water quality detection, the representativeness of sample then depends on the preservation of Sampling techniques and sample.Water sample has been come by water sampling device.Chinese Patent Application No. be 2008100567581, publication date be July 16 in 2008 day, be called in the patent document of " a kind of lake demixing water sampling instrument " and disclose a kind of water sampling device.Existing water sampling device all comprises sampling bottle, the drag-line drawing sampling and the weight that sampling bottle is sunk.Sampling bottle is made to drop to the corresponding degree of depth by weight during use, then water is made to enter sampling bottle, namely then make sampling bottle emerge, then by this sampling bottle, water sample carried out storing and send to that check point carries out water quality detection, also sampling bottle and sample presentation bottle are same bottles.Existing water sampling device has the following disadvantages: pull by stay cord the folding controlling sampling bottle, therefore inconvenience during folding sampling bottle; Be the length entering in water part with drag-line be used as sampling thief enter the degree of depth in water, but due to the impact of water velocity, stay cord may produce the phenomenon of inclination, the actual depth of water of sampling spot can be caused unequal with the required depth of water when producing, thus cause the authenticity of water sample poor, the method of existing this problem of solution is the weight increasing weight, make drag-line can keep vertical, increase weight weight ensure the actual value of sampled point operation can be caused to require great effort with the technological means that required value is equal and also accuracy also poor.
Summary of the invention
The first object of the present invention aim to provide a kind of sampling bottle can automatic open-close and the folding response time short be provided with response acceleration mechanism water sampler, solve and go to pull by stay cord and open the problem of the folding sampling bottle inconvenience existing for sampling bottle.
Second object of the present invention aims to provide a kind of water sampler being provided with response acceleration mechanism that sampling bottle can be made easily to be positioned at required depth of water position, solves existing water sampling device and makes the actual grade of sampling bottle with the problem of the operation effort existing for required deep equality by the weight increasing weight.
Above technical matters is solved by following technical proposal: a kind of water sampler being provided with response acceleration mechanism, comprise sampling bottle, the drag-line of traction sampling bottle, the weight that sampling bottle is sunk and response acceleration mechanism, described response acceleration mechanism comprises the perpendicular cylinder put, upper driving stem and lower driving stem, the roof of described sampling bottle is provided with the upper retaining valve that the outside towards sampling bottle is opened, the diapire of described sampling bottle is provided with the lower retaining valve that the inside towards sampling bottle is opened, described upper retaining valve and lower retaining valve all comprise runner and are arranged at the spool of runner, described weight is arranged at the bottom of described sampling bottle, described cylinder comprises cylinder body and slipper seal and is connected to piston in cylinder body, the air cavity of sealing is formed between described cylinder body and piston, described cylinder body is fixed together with described sampling bottle, the lower end of described lower driving stem links together with described piston through after described air cavity, upper end links together with the spool of described lower retaining valve, the upper end of described upper driving stem links together with the spool of described upper retaining valve, lower end links together with the spool of described lower retaining valve.Time in atmosphere, two retaining valves are all close.During use, sampling thief is suspended on by drag-line, sampling thief draws together with drag-line in deadweight and declines with the effect of weight under, then stops relieving drag-line, make sampling thief be suspended in the position of the corresponding degree of depth in water when the length that drag-line enters part in water reaches and needs.In the process that sampling thief declines under the effect of hydraulic pressure with the current formed that decline, the spool of two valves is all automatically opened and makes water sample enter in sampling thief; After the water in sampling thief is filled, pull-up drag-line and by sampling thief rise, make closed check valve during rise due to the effect of current, therefore the water in sampling thief is the water in corresponding basin.In the process declined, effect due to hydraulic pressure makes the pressure increase of piston exterior, piston rises, air cavity can be squeezed and reduce to internal and external pressure balance, the result reduced be drive lower connecting rod and upper connecting rod to rise, play accelerate retaining valve unlatching effect, also namely make the unlatching of retaining valve more timely reliably; During same rising, due to the reduction of external water pressure, under the gas in air cavity, push piston is Zi to internal and external pressure balance, under the result that pushes away for accelerating closed check valve, make the authenticity of water sample better.
As preferably, be provided with bearing step in described runner, described bearing step is provided with the annular water tank that the circumference along runner extends, and described spool is held on described bearing step, described spool is provided with the bulge loop that the circumference along runner extends, and described bulge loop is located in described tank.By injecting water in the sink and the water making bulge loop be inserted in tank realizes the closedown of retaining valve.In this, the scheme of closing one-way valve does not need the power source of additional spring, make spool only need to overcome buoyancy namely can realize closing, make to close the centrifugal of spool, the power of closing spool is little, sampling thief reliably can be closed (also namely gas is not easy to enter in water sample), thus the authenticity of water sample can be made better.
As preferably, together with described spool and the sealing of bearing step are spliced.Prevent air from entering better effects if in sampling bottle.
The present invention also comprises drag-line inclination angle detection mechanism, described drag-line inclination angle detection mechanism comprise by tabula rasa, support by the buoyancy tank of tabula rasa, spherical hinge be connected to buoyancy tank pedestal and be connected to pedestal to the light beam generator being subject to tabula rasa transmitted beam.Drag-line inclination angle detection mechanism is floated over by buoyancy tank on the water surface in sampling waters, drag-line to be connected on pedestal and to make drag-line enter the length of part in water equal with required sampling depth, open light beam generator, measure the light of light beam generator directive by tabula rasa light beam when the bright spot (hereinafter referred to as actual bright spot) being subject to tabula rasa is formed is in vertical state with drag-line and be subject to the distance between the bright spot (hereinafter referred to as pedestal bright spot) that tabula rasa is formed, and the distance between the light that formed with light beam generator of the centre of sphere of hinged of pedestal, calculate the inclination angle that drag-line produces by water velocity affects, calculate drag-line according to inclination angle and required sampling depth value and need the length value partly that is in water, then the length value making drag-line be in water is this value.Achieve second goal of the invention, the authenticity improving water sample can be gone in convenient and strength-saving mode.
As preferably, the straight line at the light beam place that described light beam generator produces is through the center of hinged of pedestal and buoyancy tank.Distance between the light that the centre of sphere not needing to measure hinged of pedestal when calculating the inclination angle of drag-line is formed with light beam generator, also namely need the difference of measurement few, need the little then measuring error of difference measured little, more convenient and accuracy is higher when making to calculate the inclination angle of drag-line.
As preferably, described is slab construction by tabula rasa.Measure actual bright spot with convenient during distance between pedestal bright spot.
Preferred as another, described is spherical structure by tabula rasa, and the described centre of sphere of the ball at tabula rasa place that is subject to is with the center superposition of hinged of pedestal and buoyancy tank, and described is translucent construction by tabula rasa.Can reduce by the area of plane shared by tabula rasa.
As preferably, described by forming protection chamber between tabula rasa and described buoyancy tank, described light beam generator is positioned at described protection chamber.Can play a protective role to light beam generator by tabula rasa.
As preferably, be describedly provided with angle of inclination scale mark by tabula rasa.Directly can know inclination angle, convenience during use is better.
As preferably, described light beam generator is color-changing lamp.The luminous point formed is little, makes the precision at the inclination angle of measuring higher.
As preferably, described sampling bottle is provided with sample water outlet.Can make sampling and sample presentation adopt different bottles, make sample presentation and sample can separately carry out, non-interference.Can reduce the requirement to sample presentation bottle specification, versatility is better.
The present invention has following advantage: sampling bottle can open and close automatically, and convenience during operation is good; Sampling bottle open and close time fast response time and good reliability; Weight is arranged at the diapire of sampling bottle, can make, in sampling bottle lifting process, can not produce rollover phenomenon, plays the effect improving reliability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the close-up schematic view at the A place of Fig. 1.
Fig. 3 is the schematic top plan view by tabula rasa.
Fig. 4 is the using state schematic diagram of embodiment one.
Fig. 5 is the partial schematic diagram of embodiment two.
In figure: sampling bottle 1, shirt rim 11, sample water outlet 12, suspension ring 13, weight 2, via hole 21, response acceleration mechanism 3, cylinder 31, cylinder body 311, piston 312, air cavity 313, lower driving stem 32, upper driving stem 33, drag-line inclination angle detection mechanism 4, by tabula rasa 41, buoyancy tank 42, through hole 421 is installed, pedestal 43, light beam generator 44, support bar 45, angle of inclination scale mark 46, protection chamber 47, drag-line 5, lower retaining valve 6, lower flow channel 61, bottom spool 62, upper retaining valve 7, upper runner 71, upper valve core 72, bearing step 73, tank 74, bulge loop 75, the water surface 8, pedestal with the centre distance of hinged of buoyancy tank by the distance L1 of tabula rasa, light beam generator directive is being subject to the distance L2 between the bright spot (pedestal bright spot) that tabula rasa is formed by light light beam when the bright spot (i.e. actual bright spot) being subject to tabula rasa is formed is in vertical state with drag-line of tabula rasa, required sampled point degree of depth L3, drag-line needs the length L4 entered in water, the angle of inclination B of drag-line.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
Embodiment one, see Fig. 1, a kind of water sampler being provided with response acceleration mechanism, comprises sampling bottle 1, weight 2, response acceleration mechanism 3, drag-line inclination angle detection mechanism 4 and drag-line 5.
Sampling bottle 1 is structure as a whole.The bottom surface of sampling bottle 1 is provided with shirt rim 11.Weight 2 is made up of the two half-unit of horizontal distribution.Via hole 21 is provided with in weight 2.Weight 2 removably in be arranged in space that shirt rim 11 surrounds.The diapire of sampling bottle 1 is provided with the lower retaining valve 6 that the inside towards sampling bottle is opened.Lower retaining valve 6 comprises lower flow channel 61 and is arranged at the bottom spool 62 of upper runner.Lower flow channel 61 to be opened on the diapire of sampling bottle 1 and the diapire of through sampling bottle.Lower flow channel 61 is rectilinear structure.Lower flow channel 61 and via hole 21 are positioned on same vertical curve.The roof of sampling bottle 1 is provided with the upper retaining valve 7 that the outside towards sampling bottle is opened.Upper retaining valve 7 comprises upper runner 71 and is arranged at the upper valve core 72 of upper runner.On the roof that upper runner 71 is opened in sampling bottle 1 and the roof of through sampling bottle.Upper runner 71 is rectilinear structure.The sidewall of sampling bottle 1 is provided with sample water outlet 12.Sample water outlet 12 is connected with band tubing (not drawing in figure).The upper end of sampling bottle 1 is provided with suspension ring 13.
Response acceleration mechanism 3 comprises perpendicular cylinder 31, lower driving stem 32 and the upper driving stem 33 put.Cylinder 31 comprises cylinder body 311 and slipper seal and is connected to piston 312 in cylinder body.The air cavity 313 of sealing is formed between cylinder body 311 and piston 312.Gas is filled with in air cavity 313.Cylinder body 311 is fixed together with sampling bottle 1.The lower end of lower driving stem 32 links together with piston 312 through after air cavity 313.Lower driving stem 32 is that slipper seal links together with the wall of cylinder body 311.The upper end of lower driving stem 32 to be located in lower flow channel 61 and to link together with bottom spool 62.The upper end of upper driving stem 33 to be located in upper runner 71 and to link together with upper valve core 72.The lower end of upper driving stem 33 links together with bottom spool 62.When the present invention is in air with perpendicular configuration state, upper retaining valve 7 and lower retaining valve 6 are all close, and the air pressure in air cavity 313 is 0.9 to 1.2 atmospheric pressure.
Drag-line inclination angle detection mechanism 4 comprises by tabula rasa 41, buoyancy tank 42, pedestal 43 and light beam generator 44.Be slab construction by tabula rasa 41.Be translucent construction by tabula rasa 41.Be acrylic board by tabula rasa 41.Be connected on buoyancy tank 42 by support bar 45 by tabula rasa 41.The top of buoyancy tank 42 is positioned at by tabula rasa 41.Buoyancy tank 42 is provided with installs through hole 421.Pedestal 43 spherical hinge is connected in the installation through hole 421 of buoyancy tank 42.Pedestal 43 is positioned in buoyancy tank 42 and the gravity vertical by the entirety of both tabula rasas 41 formation.Light beam generator 44 is connected on the upper surface of pedestal 43.Light beam generator 44 is color-changing lamp.The light beam that light beam generator 44 produces is penetrated towards by tabula rasa 41.The straight line at the light beam place that light beam generator produces is through the center of hinged of pedestal and buoyancy tank.The lower end of pedestal 43 is provided with hook (not drawing in figure).
The lower end of drag-line 5 links together with suspension ring 13.The upper end of drag-line 5 hangs on the hook of the lower end of pedestal 43.
The closedown opening ways of upper retaining valve 7 is the same with the open and close mode of lower retaining valve 6.Now upper retaining valve is specifically explained.
See Fig. 2, in upper runner 72, be provided with bearing step 73.Bearing step 73 is provided with the annular water tank 74 that the circumference along runner extends.Spool 72 is provided with the bulge loop 75 that the circumference along runner extends.Spool 72 is held on bearing step 73.Be (sealing ring being provided therebetween realize sealing) that be sealed and matched when spool 72 is held on bearing step 73.Bulge loop 75 is located in tank 74.By injecting water in tank 74, spool 72 makes bulge loop 75 be inserted in the closedown improving sealing effectiveness, i.e. valve in the water of tank 74 further under gravity.When spool 72 moving on to spool 72 and not being shelved on bearing step bulge loop 75, then valve is turned on to liquid and can passes in and out, and when moving on to bulge loop 75 on continuing and extracting from tank 74, then valve is opened to gas and also can passes in and out.
See Fig. 3, be provided with angle of inclination scale mark 46 by tabula rasa 41.
See Fig. 4, during use, by be connected to sample water outlet 12 band tubing (not drawing in figure) to wrapping up in case produce leakage.Buoyancy tank 42 is kept afloat on 8, is now in horizontality by tabula rasa 41.Drag-line 5 is fixed on the hook of the lower end of pedestal 43.If the flowing of water causes sampling bottle 1 to drift about and makes drag-line 5 produce, then the light beam that light beam differential mechanism 44 penetrates can tilt directive by tabula rasa 41.By pedestal with the centre distance of hinged of buoyancy tank by the distance L1 of tabula rasa, light beam generator directive is by the light angle of inclination B that light beam is being subject to the distance L2 between the bright spot (pedestal bright spot) that tabula rasa is formed to calculate drag-line when to be in vertical state with drag-line by the bright spot (i.e. actual bright spot) that tabula rasa is formed of tabula rasa.Then calculate according to the angle of inclination B of drag-line and the required sampled point degree of depth L3 length L4 that drag-line needs to enter in water, then make the actual degree of depth entered in water of drag-line 5 be L4.Such depth-sampling bottle 1 can arrive actual grade exactly and avoid the existing inclination conditions owing to not knowing drag-line, with the inaccurate problem of sampled point depth location caused.When sampling bottle 1 declines, upper retaining valve 7 and lower retaining valve 6 are all opened and respond the effect that acceleration mechanism 3 plays acceleration valve unlatching, and the water sample that the corresponding degree of depth goes out enters in sampling bottle 1.Then by drag-line 5 pull-up sampling bottle 1, during rising, upper retaining valve 7 and lower retaining valve 6 are all closed and respond the effect that acceleration mechanism 3 plays acceleration valve closedown.Then the band tubing (not drawing in figure) in sample water outlet 12 is inserted in sample presentation bottle, unties this flexible pipe, water is flow in sample presentation bottle and till producing and overflowing, covers sample presentation bottle and carry out sample presentation.
See Fig. 4 in the present embodiment, being provided with angle of inclination scale mark 46 by tabula rasa 41, when light beam irradiation is the angle of inclination of drag-line to the scale on that scale mark, namely corresponding to this scale mark, thus play the effect improving ease of use.
Embodiment two, the difference with embodiment one is:
See Fig. 5, be spherical structure by tabula rasa 41.By the centre of sphere of the sphere at tabula rasa 41 place with the center superposition of hinged of pedestal 43 and buoyancy tank 32.By forming protection chamber 47 between tabula rasa 41 and buoyancy tank 42.Protection chamber 47 is hermetically-sealed construction.Light beam generator 44 is positioned at protection chamber 47.
Claims (10)
1. one kind is provided with the water sampler of response acceleration mechanism, comprise sampling bottle, drag-line and the weight that sampling bottle is sunk of traction sampling bottle, it is characterized in that, also comprise response acceleration mechanism, described response acceleration mechanism comprises the perpendicular cylinder put, upper driving stem and lower driving stem, the roof of described sampling bottle is provided with the upper retaining valve that the outside towards sampling bottle is opened, the diapire of described sampling bottle is provided with the lower retaining valve that the inside towards sampling bottle is opened, described upper retaining valve and lower retaining valve all comprise runner and are arranged at the spool of runner, described weight is arranged at the bottom of described sampling bottle, described cylinder comprises cylinder body and slipper seal and is connected to piston in cylinder body, the air cavity of sealing is formed between described cylinder body and piston, described cylinder body is fixed together with described sampling bottle, the lower end of described lower driving stem links together with described piston through after described air cavity, upper end links together with the spool of described lower retaining valve, the upper end of described upper driving stem links together with the spool of described upper retaining valve, lower end links together with the spool of described lower retaining valve.
2. the water sampler being provided with response acceleration mechanism according to claim 1, it is characterized in that, bearing step is provided with in described runner, described bearing step is provided with the annular water tank that the circumference along runner extends, described spool is held on described bearing step, described spool is provided with the bulge loop that the circumference along runner extends, and described bulge loop is located in described tank.
3. the water sampler being provided with response acceleration mechanism according to claim 2, is characterized in that, together with described spool splices with the sealing of bearing step.
4. the water sampler being provided with response acceleration mechanism according to claim 1 or 2 or 3, it is characterized in that, also comprise drag-line inclination angle detection mechanism, described drag-line inclination angle detection mechanism comprise by tabula rasa, support by the buoyancy tank of tabula rasa, spherical hinge be connected to buoyancy tank pedestal and be connected to pedestal to the light beam generator being subject to tabula rasa transmitted beam.
5. the water sampler being provided with response acceleration mechanism according to claim 4, is characterized in that, the straight line at the light beam place that described light beam generator produces is through the center of hinged of pedestal and buoyancy tank.
6., according to the water sampler being provided with response acceleration mechanism according to claim 4, it is characterized in that, described is slab construction by tabula rasa.
7. according to the water sampler being provided with response acceleration mechanism according to claim 4, it is characterized in that, described is spherical structure by tabula rasa, and the described center superposition of hinged of the centre of sphere with pedestal and buoyancy tank being subject to the ball at tabula rasa place, described is translucent construction by tabula rasa.
8. according to the water sampler being provided with response acceleration mechanism according to claim 7, it is characterized in that, described by forming protection chamber between tabula rasa and described buoyancy tank, described light beam generator is positioned at described protection chamber.
9., according to the water sampler being provided with response acceleration mechanism according to claim 4, it is characterized in that, be describedly provided with angle of inclination scale mark by tabula rasa.
10., according to the water sampler being provided with response acceleration mechanism according to claim 4, it is characterized in that, described light beam generator is color-changing lamp.
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| CN201410474698.0A CN104316351B (en) | 2014-09-18 | 2014-09-18 | It is provided with the water sampler of response acceleration mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106940259A (en) * | 2017-04-11 | 2017-07-11 | 浙江大学 | A kind of seabed sequence hydrophore of pressure adaptive |
| CN107748086A (en) * | 2017-09-28 | 2018-03-02 | 珠海市领创智能物联网研究院有限公司 | A kind of Internet of Things water quality online monitoring method instrument |
| CN107991453A (en) * | 2018-01-17 | 2018-05-04 | 南开大学 | A kind of towed water quality detecting device |
| CN108489760A (en) * | 2018-03-14 | 2018-09-04 | 温岭市仁全机械设备有限公司 | A kind of modernization high-performance special electric machine |
| CN108760387A (en) * | 2018-03-17 | 2018-11-06 | 宁夏大学 | A kind of portable inland lake hydrophore |
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| CN106940259B (en) * | 2017-04-11 | 2023-08-18 | 浙江大学 | A Pressure Adaptive Submarine Sequential Water Collector |
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