CN103439149B - Negative pressure pneumatic type automatic sampler for water sample in medium-deep layer - Google Patents
Negative pressure pneumatic type automatic sampler for water sample in medium-deep layer Download PDFInfo
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- CN103439149B CN103439149B CN201310417613.0A CN201310417613A CN103439149B CN 103439149 B CN103439149 B CN 103439149B CN 201310417613 A CN201310417613 A CN 201310417613A CN 103439149 B CN103439149 B CN 103439149B
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Abstract
The invention discloses a negative pressure pneumatic type automatic sampler for a water sample in a medium-deep layer. The negative pressure pneumatic type automatic sampler comprises a sampling water storage chamber, a balance weight device and a gas-liquid tank, wherein a sampling hole is formed in the upper part of the sampling water storage chamber, a gas-liquid piston cylinder is arranged below the sampling hole, a liquid storage cavity of the gas-liquid piston cylinder is connected with the gas-liquid tank through a pipeline, an environmental pressure control valve is arranged on the pipeline, a balancing weight of the balance weight device is fixed on a balancing weight frame through a balancing weight fixed releasing control valve, the balancing weight fixed releasing control valve is connected with the gas-liquid tank through a water returning pipeline, a water returning control valve is arranged on the water returning pipeline, and a pressure trigger button matched with a water returning control valve is arranged at the bottom of the liquid storage cavity. The negative pressure pneumatic type automatic sampler submerges in water under the action of gravity of the balancing weight, so that the water sample in the medium-deep layer with the depth of below 10-30m is automatically acquired, the balancing weight is discarded, a device automatically returns and the acquired sample is brought out due to the adoption of an underwater negative pressure pneumatic technology.
Description
Technical field
The present invention relates to a kind of water sampling device, particularly a kind of negative pressure pneumatic type automatic sampler for water sample in medium-deep layer.
Background technology
Along with the carrying out of ocean development, the extractive technique of ocean water sample comes into one's own day by day.The extracting mode of ocean water sample is a lot, mainly contains at present by its working method: manually dive under water, arrange the sample modes such as in-line pump suction and plant equipment diving.There is various problem such as sampling depth, sampling amount, sampling and whether can pollute in these sampling modes, applied widely wideless etc.
Summary of the invention
Technical matters to be solved by this invention is for the deficiencies in the prior art, there is provided a kind of reasonable in design, easy to use, equipment is utilized to dive under water under the Action of Gravity Field of balancing weight, and utilize Pneumatic negative-pressure technology under water to realize negative pressure pneumatic type automatic sampler for water sample in medium-deep layer that mid-deep strata depthkeeping degree water sample gathered, and abandoned counterweight, realizes equipment auto-returned and took out of sampling automatically.
Technical matters to be solved by this invention is realized by following technical scheme, the present invention is a kind of negative pressure pneumatic type automatic sampler for water sample in medium-deep layer, be characterized in: comprise sampling reservoir chamber, the below of sampling reservoir chamber is provided with counter weight device, gas-liquid tank is provided with between sampling reservoir chamber and counter weight device, the top of described sampling reservoir chamber is provided with thief hatch, bottom is provided with the exhausr port just right with thief hatch, thief hatch and exhausr port are respectively equipped with top cover labyrinth and lower sealing cover, connected by connecting rod between two gland bonnets, connecting rod near lower sealing cover is equipped with and changes water plate, below exhausr port, be provided with gas-liquid piston cylinder, the piston of gas-liquid piston cylinder connects with aforementioned connecting rod, is set to liquid storage cylinder below gas-liquid piston cylinder piston, and the bottom of liquid storage cylinder is connected with gas-liquid tank by pipeline, and pipeline is provided with environmental pressure operation valve, described counter weight device comprises the counter-balanced carriage be connected with gas-liquid tank, counter-balanced carriage is provided with balancing weight, the two ends of balancing weight are fixed release control valve respectively by counterweight and are connected with counter-balanced carriage, counterweight is fixed release control valve and is connected with gas-liquid tank by water return pipeline, water return pipeline is provided with water-returning control valve, and the bottom of liquid storage cylinder is provided with the pressure activated button coordinated with water-returning control valve, described counterweight is fixed release control valve and is provided with application valve body, admission chamber and compression chamber is divided into by movable partition in application valve body, filled with fluid in admission chamber, described water return pipeline is communicated with admission chamber, be provided with the retracing spring be connected with movable partition in admission chamber, in compression chamber, be provided with the balancing weight fixed pin be connected with movable partition, contain air in the gentle flow container of sampling reservoir chamber before sampling, the liquid storage cylinder of gas-liquid piston cylinder and counterweight are fixed in the admission chamber of release control valve and are filled liquid respectively, change water plate and thief hatch inwall fitted seal, sampling thief dive is to set depth, environmental pressure operation valve is opened under the effect of environment hydraulic pressure, the water plate that changes in sampling reservoir chamber leaves thief hatch, seawater enters in sampling reservoir chamber by thief hatch, and piston continues lower enforcement upper-lower seal lid and covers respectively on thief hatch and exhausr port, and the piston of gas-liquid piston cylinder touches pressure activated button simultaneously, water-returning control valve is opened, counterweight is fixed release control valve and is opened, and balancing weight comes off, and returns at the effect down-sampler of buoyancy.
Technical matters to be solved by this invention can also be realized further by following technical scheme, described environmental pressure operation valve is provided with valve body, inlet chamber and discharge chamber is provided with in valve body, valve seat is provided with between inlet chamber and discharge chamber, the spool coordinated with valve seat is provided with in discharge chamber, the valve rod connected with spool is provided with in discharge chamber, the outer wall of inlet chamber is just provided with diaphragm compression chamber to valve rod, the outer end of described valve rod is arranged in diaphragm compression chamber, diaphragm compression chamber is provided with the pressure-sensitive diaphragm coordinated with valve rod termination, valve rod in diaphragm compression chamber is provided with pressure spring.
Technical matters to be solved by this invention can also be realized further by following technical scheme, and the pipeline that the liquid storage cylinder of gas-liquid piston cylinder is connected with gas-liquid tank is equipped with retaining valve.
Compared with prior art, the present invention carries out dive by balancing weight entrained by self, simultaneously by the pressure that air pressure entrained by equipment produces lower than the environment depth of water residing for equipment, carry out water sampling, when arriving set depth, environmental pressure operation valve is triggered by hydraulic pressure, thus automatically by the liquid press-in gas-liquid tank in gas-liquid piston cylinder, make sampling reservoir chamber gather water sample, after having gathered simultaneously, abandoning balancing weight makes equipment buoyancy increase, auto-returned.The present invention can be implemented in mid-deep strata (below 10-30 rice) depthkeeping degree water sample and automatically gathers, abandons counterweight, realize equipment auto-returned and take sampling out of, is applicable to the multiple occasions such as sea farming, ocean new energy development, ocean water investigation and monitoring.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the structural representation of environmental pressure operation valve of the present invention.
Fig. 3 is the structural representation that counterweight of the present invention fixes release control valve.
Embodiment
Referring to accompanying drawing, further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not form the restriction to its right.
With reference to Fig. 1, a kind of negative pressure pneumatic type automatic sampler for water sample in medium-deep layer, comprise sampling reservoir chamber 5, the below of sampling reservoir chamber 5 is provided with counter weight device 15, gas-liquid tank 9 is provided with between sampling reservoir chamber 5 and counter weight device 15, the top of described sampling reservoir chamber 5 is provided with thief hatch, bottom is provided with the exhausr port just right with thief hatch, thief hatch and exhausr port are respectively equipped with top cover labyrinth 1 and lower sealing cover 3, connected by connecting rod 2 between two gland bonnets 1,3, the connecting rod 2 near lower sealing cover 3 is equipped with and changes water plate 4; Gas-liquid piston cylinder 7 is provided with below exhausr port, the piston 6 of gas-liquid piston cylinder 7 connects with aforementioned connecting rod 2, liquid storage cylinder 8 is set to below gas-liquid piston cylinder 7 piston 6, the bottom of liquid storage cylinder 8 is connected with gas-liquid tank 9 by pipeline 10, pipeline 10 is provided with environmental pressure operation valve 13, and the pipeline 10 of environmental pressure operation valve 13 between liquid storage cylinder 8 is provided with retaining valve.Retaining valve can be avoided in floating-upward process, because the change of environmental pressure causes piston 6 action, the sampling reservoir chamber 5 of sealing being opened.
Described counter weight device 15 comprises the counter-balanced carriage 12 be connected with gas-liquid tank 9, counter-balanced carriage 12 is provided with balancing weight 14, the two ends of balancing weight 14 are fixed release control valve 16 respectively by counterweight and are connected with counter-balanced carriage 12, counterweight is fixed release control valve 16 and is connected with gas-liquid tank 9 by water return pipeline 11, water return pipeline 11 is provided with water-returning control valve, and the bottom of liquid storage cylinder 8 is provided with the pressure activated button coordinated with water-returning control valve.
With reference to Fig. 3, described counterweight is fixed release control valve 16 and is provided with application valve body 161, admission chamber and compression chamber is divided into by movable partition 163 in application valve body 161, described water return pipeline 11 is communicated with admission chamber, be provided with the retracing spring 164 be connected with movable partition 163 in admission chamber, in compression chamber, be provided with the balancing weight fixed pin 162 be connected with movable partition 163.Filled with fluid in admission chamber before sampling, make retracing spring 164 softened, balancing weight fixed pin 162 inserts in balancing weight 14 and is fixed by balancing weight 14; After the liquid in admission chamber is discharged, retracing spring 164 drive activity partition 163 and balancing weight fixed pin 162 are retracted, and balancing weight 14 will depart from counter-balanced carriage 12.
Before sampling: contain air in the gentle flow container 9 of sampling reservoir chamber 5, the liquid storage cylinder 8 of gas-liquid piston 6 cylinder 7 and counterweight are fixed in release control valve 16 and are filled liquid respectively, can guarantee upper-lower seal lid 1,3, piston 6 and change water plate 4 and can not move down because of ambient seawater pressure increase before not reaching set depth.Change water plate 4 and thief hatch inwall fitted seal, select balancing weight 14 according to set depth simultaneously, make it ensure dive, guarantee normally returning of jettisoning balancing weight 14 post-sampling device again.The predetermined pressure of environmental pressure operation valve 13 is set in addition according to sampling depth.
Sampling thief dive: controlled by environmental pressure operation valve 13, sampling thief is not sampled before dive to set depth.Under the effect of balancing weight 14, sampling thief dive is to set depth, environmental pressure operation valve 13 is opened under the effect of environment hydraulic pressure, the piston 6 of gas-liquid piston cylinder 7 moves down by the differential pressure action of gas in environment hydraulic pressure and gas-liquid tank 9, make in the liquid row air inlet flow container 9 in liquid storage cylinder 8, again under this suction function (negative pressure means the pressure that air pressure entrained by equipment produces lower than the environment depth of water residing for equipment) water plate 4 that changes of sampling in reservoir chamber 5 leaves thief hatch, under ambient water pressure effect, seawater enters in sampling reservoir chamber 5 by thief hatch, piston 6 continues lower enforcement upper-lower seal lid 1, 3 cover respectively on thief hatch and exhausr port, complete deep water collection and seal the task of water sample, the piston 6 of gas-liquid piston cylinder 7 touches pressure activated button simultaneously, water-returning control valve is opened, the liquid that counterweight is fixed in release control valve 16 enters in gas-liquid tank 9 at ambient seawater pressure flows by action, the balancing weight fixed pin 162 that such counterweight fixes release control valve 16 is retracted, balancing weight 14 comes off, the buoyancy of sampling thief is greater than himself gravity, return at the effect down-sampler of buoyancy, namely overall process of once sampling is completed.
With reference to Fig. 2, described environmental pressure operation valve 13 is provided with valve body 131, inlet chamber 132 and discharge chamber 133 is provided with in valve body 131, valve seat 135 is provided with between inlet chamber 132 and discharge chamber 133, the spool 134 coordinated with valve seat 135 is provided with in discharge chamber 133, the valve rod 138 connected with spool 134 is provided with in discharge chamber 133, the outer wall of inlet chamber 132 is just provided with diaphragm compression chamber to valve rod 138, the outer end of described valve rod 138 is arranged in diaphragm compression chamber, diaphragm compression chamber is provided with the pressure-sensitive diaphragm 137 coordinated with valve rod 138 termination, valve rod 138 in diaphragm compression chamber is provided with pressure spring 136.The valve of environmental pressure shown in figure just wherein a kind of embodiment, as long as realize the unlatching of spool 134 all within protection scope of the present invention by pressure-sensitive diaphragm 137.
Claims (3)
1. a negative pressure pneumatic type automatic sampler for water sample in medium-deep layer, comprise sampling reservoir chamber, the below of sampling reservoir chamber is provided with counter weight device, it is characterized in that: between sampling reservoir chamber and counter weight device, be provided with gas-liquid tank, the top of described sampling reservoir chamber is provided with thief hatch, and bottom is provided with the exhausr port just right with thief hatch, and thief hatch and exhausr port are respectively equipped with top cover labyrinth and lower sealing cover, connected by connecting rod between two gland bonnets, the connecting rod near lower sealing cover is equipped with and changes water plate; Below exhausr port, be provided with gas-liquid piston cylinder, the piston of gas-liquid piston cylinder connects with aforementioned connecting rod, is set to liquid storage cylinder below gas-liquid piston cylinder piston, and the bottom of liquid storage cylinder is connected with gas-liquid tank by pipeline, and pipeline is provided with environmental pressure operation valve; Described counter weight device comprises the counter-balanced carriage be connected with gas-liquid tank, counter-balanced carriage is provided with balancing weight, the two ends of balancing weight are fixed release control valve respectively by counterweight and are connected with counter-balanced carriage, counterweight is fixed release control valve and is connected with gas-liquid tank by water return pipeline, water return pipeline is provided with water-returning control valve, and the bottom of liquid storage cylinder is provided with the pressure activated button coordinated with water-returning control valve; Described counterweight is fixed release control valve and is provided with application valve body, admission chamber and compression chamber is divided into by movable partition in application valve body, filled with fluid in admission chamber, described water return pipeline is communicated with admission chamber, be provided with the retracing spring be connected with movable partition in admission chamber, in compression chamber, be provided with the balancing weight fixed pin be connected with movable partition; Contain air in the gentle flow container of sampling reservoir chamber before sampling, the liquid storage cylinder of gas-liquid piston cylinder and counterweight are fixed in the admission chamber of release control valve and are filled liquid respectively, change water plate and thief hatch inwall fitted seal; Sampling thief dive is to set depth, environmental pressure operation valve is opened under the effect of environment hydraulic pressure, the water plate that changes in sampling reservoir chamber leaves thief hatch, seawater enters in sampling reservoir chamber by thief hatch, and piston continues lower enforcement upper-lower seal lid and covers respectively on thief hatch and exhausr port, and the piston of gas-liquid piston cylinder touches pressure activated button simultaneously, water-returning control valve is opened, counterweight is fixed release control valve and is opened, and balancing weight comes off, and returns at the effect down-sampler of buoyancy.
2. negative pressure pneumatic type automatic sampler for water sample in medium-deep layer according to claim 1, it is characterized in that: described environmental pressure operation valve is provided with valve body, inlet chamber and discharge chamber is provided with in valve body, valve seat is provided with between inlet chamber and discharge chamber, the spool coordinated with valve seat is provided with in discharge chamber, the valve rod connected with spool is provided with in discharge chamber, the outer wall of inlet chamber is just provided with diaphragm compression chamber to valve rod, the outer end of described valve rod is arranged in diaphragm compression chamber, diaphragm compression chamber is provided with the pressure-sensitive diaphragm coordinated with valve rod termination, valve rod in diaphragm compression chamber is provided with pressure spring.
3. negative pressure pneumatic type automatic sampler for water sample in medium-deep layer according to claim 1, is characterized in that: on the pipeline that the liquid storage cylinder of gas-liquid piston cylinder is connected with gas-liquid tank, retaining valve is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310417613.0A CN103439149B (en) | 2013-09-14 | 2013-09-14 | Negative pressure pneumatic type automatic sampler for water sample in medium-deep layer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310417613.0A CN103439149B (en) | 2013-09-14 | 2013-09-14 | Negative pressure pneumatic type automatic sampler for water sample in medium-deep layer |
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| CN103439149A CN103439149A (en) | 2013-12-11 |
| CN103439149B true CN103439149B (en) | 2015-05-13 |
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| CN201310417613.0A Expired - Fee Related CN103439149B (en) | 2013-09-14 | 2013-09-14 | Negative pressure pneumatic type automatic sampler for water sample in medium-deep layer |
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| CN111735926A (en) * | 2020-08-12 | 2020-10-02 | 安徽清大云博环保科技有限公司 | Water quality analyzer with accurate function of adding reagent to water sample |
| CN111766118B (en) * | 2020-08-18 | 2023-12-19 | 蔚蓝计划(北京)科技有限公司 | Multilayer water taking equipment for water quality monitoring |
| CN112179716B (en) * | 2020-09-22 | 2022-11-01 | 河南省环境保护科学研究院 | Water environment monitoring sampling system for basin environment monitoring |
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