CN104101515A - Negative pressure extraction type in-situ time sequence airtight water sampling technology - Google Patents
Negative pressure extraction type in-situ time sequence airtight water sampling technology Download PDFInfo
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- CN104101515A CN104101515A CN201410341754.3A CN201410341754A CN104101515A CN 104101515 A CN104101515 A CN 104101515A CN 201410341754 A CN201410341754 A CN 201410341754A CN 104101515 A CN104101515 A CN 104101515A
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Abstract
The invention discloses a negative pressure extraction type in-situ time sequence airtight water sampling technology, which belongs to the field of detection of substances or objects and is classified under the number G01V. The water collecting bottle has several serial water storing chambers separated by pistons and with extracting piston in the tail end. An external pressure source is composed of a water tank and a negative pressure source. The separating piston and the extracting piston are arranged at the top of the water sampling bottle before water is drained, an external pressure introducing port at the bottom end is connected with a negative pressure source after the water sampling bottle reaches a sampling position, the negative pressure pulls the extracting piston and drives the separating piston to move downwards, and a water sample enters the 1 st water storage chamber until the 1 st separating piston moves downwards to the first limiting step. The 2 nd separating piston is pulled down by negative pressure so that a water sample jacks up the check valve on the 1 st separating piston to enter the 2 nd water storage chamber until the 2 nd separating piston moves down to the 2 nd limiting step. The negative pressure makes the water sample push the 2 nd separating piston check valve to enter the 3 rd water storage chamber, and so on until all the water storage chambers are full of water samples. The sample can be stored in different water storage chambers according to the sampling time sequence by using the technology, so that the comparison research is convenient.
Description
Affiliated technical field
The present invention relates to the fluid in-situ acquisition technology of underwater environment and resource detection, belong to the field of detecting of material or object, Patent classificating number G01V.
Background technology
Underwater environment and resource detection usually need various gas, water is abnormal and Geochemical Markers that derive from is detected.Particularly in the sedimental pore water of the shallow table in bottom water and seabed, retain a large amount of useful seabed geochemical informations, thereby become the important object of detection.We and domestic colleague have been developed the airtight acquisition technique of multiple original position (patent of invention < < deposit pore water in-situ airtightness acquisition system > > for this reason, the patent No.: ZL2008101260922, patentee: China geology academy of sciences Mine Ziyuan Institute etc.; Patent of invention < < negative pressure extraction type original position airtight water sampling technology > >, the patent No.: ZL2011102056667, patentee: China geology academy of sciences Mine Ziyuan Institute).
Due to reasons such as environment, the one-tenth branch of acquisition target changes in gatherer process sometimes, and the composition of the sample that collects of incipient stage and the sample that collected afterwards has difference, is therefore necessary to develop the technology of sequential airtight collection bottom water and pore water.
Summary of the invention
The object of the present invention is to provide a kind of utilization negative pressure extraction principle to gather bottom water or Sediment Pore Water in original place sequential, press acquisition time precedence, sample is stored in respectively to the water method of adopting of different reservoir chambers.
Technical scheme of the present invention is: in an airtight collecting bottle housing, have a plurality of reservoir chamber series connection, between water inlet and first reservoir chamber, it is protecgulum, include a retaining valve, between first reservoir chamber and second reservoir chamber, lay a piston separator, also include a retaining valve, between second reservoir chamber and the 3rd reservoir chamber, also lay a piston separator, include a retaining valve, so analogize.Most end reservoir chamber bottom is an extracting piston, and it is lower to working chamber, opens an external pressure intake.The other housing of each reservoir chamber side is all outputed the mouth of a river and surge chamber.An external pressure source is comprised of water tank and negative pressure source, and water tank is filled clear water, and can open to the outside world is that pressure equals environmental pressure, or adds low hydraulic pressure again; Negative pressure source is filled air or is vacuumized.Sounding bottle external pressure intake is selected access water tank or negative pressure source by a three-position three-way valve, or closes.
Sampling bottle, before lower hydromining sample, is squeezed into clear water from external pressure mouth to working chamber, on extracting piston, moves, and promotes to move on to sounding bottle top on each piston separator, then working chamber is communicated with water tank.Under sounding bottle, water arrives external pressure intake access negative pressure source behind sampling location, extracting piston moves downward under negative pressure drives, drive each piston separator to move down, the water of extracting water inlet backs down retaining valve and enters first reservoir chamber, until the first piston separator is stopped and stops moving by the first separation step, negative pressure drives water to back down the retaining valve that the first piston separator includes and enters the second reservoir chamber, promoting the second piston separator moves down, until the second piston separator is stopped and stops moving by the second separation step, the retaining valve that negative pressure drives water to back down second piston separator enters the 3rd reservoir chamber, promoting the 3rd piston separator moves down, so analogize, until each reservoir chamber is sequentially adopted full water sample, adopting water process finishes.By proposing recovery on sampling bottle, along with the depth of water reduces, the surge chamber external pressure that each reservoir chamber connects reduces with external pressure, and the water that in reservoir chamber, pressure is higher promotes surge chamber piston and moves to right, and keeps the balance with external pressure.Water Soluble Gas in pore water sample, because of the gas that pressure drop may discharge, is also preserved.
By carrying on sampling bottle, be recovered to deck.Open each reservoir chamber water delivering orifice, sample is transferred to sample bottle, can be used for the detection of various necessity.
The present invention, due to the above-mentioned sequential acquisition technique adopting, is stored into by gathering sequencing the water sample collecting in different reservoir chambers, has met the needs of research different acquisition period water sample characteristic variations.
Accompanying drawing explanation
Fig. 1 is negative pressure extraction type original position sequential airtight water sampling technology schematic diagram of the present invention, the structure of its left representation negative pressure extraction type original position sequential air-tight water-sampling bottle, and it is right is pressure source connection flow process.O-water inlet in figure, A-housing, B-protecgulum, C1-the 1st reservoir chamber, C2-the 2nd reservoir chamber, C3-the 3rd reservoir chamber, D1-the 1st retaining valve, D2-the 2nd retaining valve, D3-the 3rd retaining valve, E1-the 1st is cut apart piston, E2-the 2nd is cut apart piston, F-extracting piston, G-working chamber, H-external pressure intake, I1-the 1st crosses water pipe, I2-the 2nd crosses water pipe, J1-the 1st surge chamber, J2-the 2nd surge chamber, J3-the 3rd surge chamber, K1-the 1st water delivering orifice, K2-the 2nd water delivering orifice, K3-the 3rd water delivering orifice, L1-the 1st limited step, L2-the 2nd limited step, N-three-position three-way valve, P-pressure source, P1-water tank, P2-negative pressure source
Embodiment
Below in conjunction with accompanying drawing, the water process of adopting of the present invention is elaborated.
A figure left side is the structural drawing of negative pressure extraction type original position sequential air-tight water-sampling bottle of the present invention, in an airtight collecting bottle housing A, there are a plurality of reservoir chamber C1, C2, C3 series connection, top is protecgulum B, between water inlet O and the 1st reservoir chamber C1, a retaining valve D1 is installed, between the 1st reservoir chamber C1 and the 2nd reservoir chamber C2, lay a piston separator E1, include a retaining valve D2, between the 2nd reservoir chamber C2 and the 3rd reservoir chamber C3, lay a piston separator E2, include a retaining valve D3, so analogize.Most end reservoir chamber bottom is an extracting piston F, and it is lower to working chamber G, opens an external pressure intake H.The other housing of reservoir chamber C1 side is outputed mouth of a river K1 and surge chamber J1, and the other housing of reservoir chamber C2 side is outputed mouth of a river K2 and surge chamber J2, and the other housing of reservoir chamber C3 side is outputed mouth of a river K3 and surge chamber J3.An external pressure source P is comprised of water tank P1 and negative pressure source P2, and water tank P1 fills clear water, and can open to the outside world is that pressure equals environmental pressure, or adds low hydraulic pressure again; Negative pressure source P2 fills air or vacuumizes.Sounding bottle external pressure intake is selected access water tank or negative pressure source by a three-position three-way valve N, or closes.
Before sampling, on deck, first open all water delivering orifice K1 of sampling bottle, K2, K3, external pressure intake H is connected to water tank P1, P1 access tap water is pressed into working chamber G and will on extracting piston F, shifts end reservoir chamber top onto, and then promote successively respectively to cut apart water or the gas that piston moves upward in each reservoir chamber of discharge, above move on to sounding bottle top.Seal all water delivering orifices, cancel tap water pressure and make P1 externally be communicated with.Then equipment descend water, surge chamber J1, and J2, J3 and working chamber G are all communicated with outside, and the piston of surge chamber promotes to move down into left side at spring, before sampling, is ready to complete.
Arrive sounding bottle external pressure intake H access negative pressure source P2 behind sampling location, extracting piston F moves downward under negative pressure drives, drive is respectively cut apart piston and is moved downward, first the water of the water inlet on protecgulum back down retaining valve D1 and enter reservoir chamber C1, piston E1 is cut apart in promotion, drive other piston separators to move downward together simultaneously, the pressure differential of now cutting apart piston E1 both sides only needs to overcome the resistance that E1 moves down, do not reach the opening pressure of retaining valve D2, D2 stops water to flow into the 2nd reservoir chamber, until cut apart piston E1, arrive the 1st limited step L1, can not move down again, the 1st reservoir chamber C1 is full of water, the 1st stage adopted water and finishes.Now extracting piston F does not arrive the bottom of working chamber G yet, negative pressure in working chamber still exists and the drop-down the 2nd cuts apart piston E2, the 1st cuts apart piston E1 both sides pressure reduction rises until be greater than the opening pressure of the retaining valve D2 on E1, the water at water inlet O place flows through the 1st crosses water pipe I1, back down D2, water flows to the 2nd reservoir chamber, promotion is cut apart piston E2 and is moved downward, the pressure differential of cutting apart piston E2 both sides only needs to overcome the resistance that E2 moves down, do not reach the opening pressure of the retaining valve D3 on E2, water can not flow into the 3rd reservoir chamber, until cut apart piston E2, arrive the 2nd limited step L2, can not move down again, the 2nd reservoir chamber C2 is full of water, the 2nd stage adopted water and finishes.Now extracting piston F does not arrive the bottom of working chamber G yet, negative pressure in working chamber still exists, and the 2nd cuts apart the pressure reduction rising of piston E2 both sides until be greater than the opening pressure of the 3rd retaining valve D3, and the water at water inlet O place flows through the 1st mistake water pipe I1 and the 2nd crosses water pipe I2, back down D3, water flows to the 3rd reservoir chamber.The rest may be inferred, and each reservoir chamber is full of water successively, until extracting piston F arrives the bottom of working chamber G, the whole water process of adopting finishes.
Now handle three-position three-way valve N, first sounding bottle external pressure intake H is connected to water tank P1, then close external pressure intake H, each water storage intraventricular pressure equals to adopt water depth hydrostatic pressure.By proposing recovery on sampling bottle, along with the depth of water reduces, each surge chamber J1, J2, the piston right atrial pressure of J3 etc. reduces with external pressure, and the water that in reservoir chamber, pressure is higher promotes surge chamber piston and moves to right, and keeps the balance with external pressure.Water Soluble Gas in pore water sample, because of the gas that pressure drop may discharge, is also preserved.
Below introduce the use procedure that the present invention is applied in the former bit timing airtight of underwater water sample sample:
(1) by sampling bottle, external pressure source P1, P2 and three-position three-way valve N etc. is integrated under water on sample devices, and equipment is equipped with necessary flip flop equipment and 3-position-3-way valve drive simultaneously;
(2) on deck, first open all water delivering orifice K1 of sampling bottle, K2, K3, again external pressure intake H is connected to P1, P1 access tap water is pressed into working chamber G and will on extracting piston F, shifts end reservoir chamber top onto, and then promotes successively respectively to cut apart water or the gas that piston moves upward in each reservoir chamber of discharge, above moves on to sounding bottle top.Seal all water delivering orifices, cancel tap water pressure and make P1 externally be communicated with.P2 emptied of water, if desired sealed after being vacuumized.
(3) water under equipment.After arriving sampling location, by trigger pip, handle three-position three-way valve N by external pressure intake H access negative pressure source P2, extracting piston moves downward under negative pressure drives, drive is respectively cut apart piston and is moved downward, first the water at the water inlet O place on protecgulum back down retaining valve D1 and enter reservoir chamber C1, piston E1 is cut apart in promotion, drive other piston separators to move downward together simultaneously, now cut apart the poor opening pressure that does not reach it of retaining valve D2 pressure at two ends on piston E1, D2 stops water to flow into the 2nd reservoir chamber, until cut apart piston E1, arrive the 1st limited step L1, can not move down again, the 1st reservoir chamber C1 is full of water, the 1st stage adopted water and finishes.
(4) extracting piston F does not arrive the bottom of working chamber G, negative pressure in working chamber still exists and the drop-down the 2nd cuts apart piston E2, the 1st cuts apart the opening pressure that the 2nd retaining valve D2 two ends pressure reduction on piston E1 is greater than D2, the water at water inlet O place sees through the 1st and crosses water pipe I1, back down D2, water flows to the 2nd reservoir chamber, promotion is cut apart piston E2 and is moved downward, cut apart the poor opening pressure that does not reach it of retaining valve D3 pressure at two ends on piston E2, stop water to flow into the 3rd reservoir chamber, until cut apart piston E2, arrive the 2nd limited step L2, can not move down again, the 2nd reservoir chamber C2 is full of water, the 2nd stage adopted water and finishes.
(5) now extracting piston F does not arrive the bottom of working chamber G yet, negative pressure in working chamber still exists, the 2nd cuts apart the opening pressure that the 3rd retaining valve D3 two ends pressure reduction on piston E2 is greater than D3, the water at water inlet O place is crossed water pipe I1 and the 2nd through the 1st and is crossed water pipe I2, back down D3, water flows to the 3rd reservoir chamber.The rest may be inferred, and each reservoir chamber is full of water successively, until extracting piston F arrives the bottom of working chamber G, the whole water process of adopting finishes.
(6) handle three-position three-way valve N, first sounding bottle external pressure intake H is connected to water tank P1, then close external pressure intake H, each water storage intraventricular pressure equals to adopt water depth hydrostatic pressure.By proposing recovery on sampling bottle, along with the depth of water reduces, each surge chamber J1, J2, the piston right atrial pressure of J3 etc. reduces with external pressure, and the water that in reservoir chamber, pressure is higher promotes surge chamber piston and moves to right, and keeps the balance with external pressure.Water Soluble Gas in pore water sample, because of the gas that pressure drop may discharge, is also preserved.
(7) arrive deck, by water delivering orifice, each reservoir chamber is preserved to water sample and transfer to test sample bottle with the gaseous sample that its decompression discharges.
(8) end-of-job.
The present invention can also be applied to the fields such as sub sea ocean oil-gas prospecting and exploitation, underwater environment monitoring, has broad application prospects.
The various schemes identical with design of the present invention, all within the protection domain of this claim.
Claims (1)
1. one kind at original place sequential airtight water sampling technology, it is characterized in that: several reservoir chamber serial connections of separating with piston separator in an air-tight water-sampling bottle, between water inlet and the 1st reservoir chamber, a retaining valve is installed, retaining valve is also installed on each piston separator, the other housing of each reservoir chamber side is outputed the mouth of a river and surge chamber, it under least significant end reservoir chamber, is an extracting piston, it is lower is working chamber, in base end wall, open an external pressure intake, an external pressure source is comprised of water tank and negative pressure source, sounding bottle external pressure intake is selected access water tank by a three-position three-way valve, negative pressure source, or close, sampling bottle is before lower hydromining sample, reservoir chamber piston separator and extracting piston are at sounding bottle top, arrive sounding bottle external pressure intake access negative pressure source behind sampling location, drive extracting piston and drive piston separator to move downward, first water sample enters the 1st reservoir chamber, promoting the 1st piston separator moves down until arrive the first limited step, the 1st stage that completed is adopted water, drop-down the 2nd piston separator of negative pressure makes to see through into water saliva the retaining valve that water pipe backs down on the 1st piston separator and enters the 2nd reservoir chamber in working chamber, promote the 2nd piston separator and move down arrival the 2nd limited step, the 2nd stage that completed is adopted water, negative pressure continues to make water sample to see through the retaining valve that water pipe backs down on the 2nd piston separator to enter the 3rd reservoir chamber in working chamber, the rest may be inferred until each reservoir chamber is adopted full water sample, adopting water finishes, water sample is kept in different reservoir chambers by sampling time order, recovery will be proposed on sampling bottle, along with the depth of water reduces, the piston on each surge chamber right side moves to left, each reservoir chamber water sample keeps the balance with external pressure, the gas that Water Soluble Gas in sample may discharge because of pressure drop, also preserved.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105954063A (en) * | 2016-06-02 | 2016-09-21 | 广州海洋地质调查局 | Seabed pore water collecting device |
| CN106092647A (en) * | 2016-05-27 | 2016-11-09 | 浙江大学 | A kind of water body sampler for autonomous underwater robot |
| CN112113137A (en) * | 2020-09-18 | 2020-12-22 | 淄博高新区成大机械设计研究所 | Multi-layer gas storage tank device and gas storage method |
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| CN203981449U (en) * | 2014-07-18 | 2014-12-03 | 中国地质科学院矿产资源研究所 | Negative pressure extraction type in-situ time sequence airtight water sampling technology |
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| EP0405475A2 (en) * | 1989-06-27 | 1991-01-02 | Sartorius Ag | Liquids sampling apparatus which can be connected to a processing or filling conduit |
| US20030092393A1 (en) * | 2001-11-09 | 2003-05-15 | Eugene Tokhtuev | Remote sampling system |
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Cited By (4)
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| CN106092647A (en) * | 2016-05-27 | 2016-11-09 | 浙江大学 | A kind of water body sampler for autonomous underwater robot |
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| CN112113137A (en) * | 2020-09-18 | 2020-12-22 | 淄博高新区成大机械设计研究所 | Multi-layer gas storage tank device and gas storage method |
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Application publication date: 20141015 |