CN1226605C - High-purity pressure-maintaining deep sea hot liquid sampler - Google Patents
High-purity pressure-maintaining deep sea hot liquid sampler Download PDFInfo
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- CN1226605C CN1226605C CN 03129042 CN03129042A CN1226605C CN 1226605 C CN1226605 C CN 1226605C CN 03129042 CN03129042 CN 03129042 CN 03129042 A CN03129042 A CN 03129042A CN 1226605 C CN1226605 C CN 1226605C
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Abstract
The present invention relates to a high-purity pressure-maintaining deep sea hydrotherm sampler which belongs to the field of marine technological apparatus and equipment. The present invention is provided with a sample barrel and a pressure accumulating barrel which are respectively fixed to the front and the rear ends of a connector. The inner cavity of the sample barrel is provided with an H-shaped sample cavity piston; the inner cavity of the pressure accumulating barrel is provided with a pressure accumulating cavity piston. The center of the connector is provided with axial pores, and a pressure accumulating cavity (A), an isolated water cavity (B), a pre-sucking cavity (C) and a sample cavity (D) are formed. A one-way valve is arranged at the front end of the H-shaped sample cavity piston; a variable damping throttle mechanism is composed of a throttle rod on the pressure accumulating cavity piston and the axial pores in the center of the connector. The front end of the sample barrel is sequentially provided with a valve plate, a sampling valve and a water sucking pipe, and an inflating valve is arranged behind the pressure accumulating barrel. The present invention solves the problem that samples collected with the prior art contain non-sample seawater in the dead volume of the water sucking pipe and the sampling valve and further improves the purity of the samples; the present invention can control the sampling speed and is suitable for collecting deep sea submarine hydrotherm flow samples with the requirement of high fidelity.
Description
Technical field
The present invention relates to a kind of deep seafloor sampling device, particularly a kind of pressurize deep-sea hydrothermal sampler.Belong to marine technology instrument and equipment field.
Background technology
Submarine hydrothermal solution is a kind of liquid that is distributed in the abyssalbenthic fountain ejection in ocean, since 1977 since Galapagos Ridge finds the hot fountain in seabed first, scientists is very paid close attention to wherein chemical constitution and microorganism, in order accurately to analyze compositions such as main chemistry in the submarine hydrothermal solution, microorganism quantitatively, the authentic sample that needs this liquid of collection in worksite, the purity height of special requirement sample, and under the pressurize condition, store and extract.Because the submarine hydrothermal solution fountain is in the seabed more than 1000 meters mostly, the sampling environment has high temperature (up to 400 ℃), high pressure, severe corrosive characteristics, to equipment and materials and structural requirement height, also because the hydrothermal vent section is little, flow is limited, require the control sample rate to be unlikely and suck spout seawater on every side, therefore it is big to gather and store real sample difficulty, the cost height.Present domestic also do not have this proven technique and equipment have country few in number successively to develop similar products in the world.A kind of airtight constant voltage hydrothermal solution sampler of the up-to-date exploitation of U.S. marine technology research institute (WHOI), referring to the author: Jeffrey S.Seewald, Kenneth W.Doherty, Terence R.Hammar, Stephen P.Liberatore.A new gas-tight isobaric sampler for hydrothermalfluids＜a kind of airtight constant voltage hydrothermal solution sampler〉literary composition, Deep-Sea Research I 49＜deep-sea research〉this product of (2001) 189-196. is mainly by the pressure accumulation tube, the pressure accumulation piston, connector, the sample tube, sample piston has constituted three chambers, i.e. pressure accumulation chamber, isolate water cavity (being the cavity between pressure accumulation piston and the sample piston) and sample cavity.The pre-inflated with nitrogen in pressure accumulation chamber before the sampling, and special requirement are all filled with deep-sea water, the orifices controls of its sample rate by setting up in isolating water cavity and suction hose and sampling valve dead volume.It has pressurize sampling, storage and extraction characteristics, but there is following tripartite planar defect in this sampler: one, before the sampler sampling, because the pre-deep-sea water of annotating can not be got rid of in advance with the environment seawater (being non-sample seawater) that is mingled with in aforesaid suction hose and the sampling valve dead volume, enter sample cavity simultaneously with sample during sampling, influence sample purity; Its two, also require the on-the-spot seabed of filling water because isolate water cavity, enter sample to prevent the sample chamber piston medium that remains on the sample cavity wall when mobile of sampling, increased the complicacy of operation easier, cost and sampling technology; Its three because what adopt is the orifices controls flow of fixing, along with the carrying out of sampling, pressure accumulation chamber nitrogen pressure increases, pressure reduction is more and more littler, thereby has determined that sample rate is more and more slower, influences sampling efficiency.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of pressurize deep-sea hydrothermal sampler is provided, make it have gas pressurize, the pre-function of inhaling and isolating and becoming damping throttling control of non-sample seawater.
The present invention realizes by the following technical solutions, the present invention includes: pressure accumulation tube, pressure accumulation chamber piston, connector, " worker " font sample chamber piston, sample tube, valve plate, sample valve, suction hose, one-way valve mechanism, change damping throttle mechanism, gas filling valve, microsample valve, micro-high-pressure pump.Sample tube and pressure accumulation tube are separately fixed at the rear and front end of connector, inner chamber setting " worker " the font sample chamber piston of sample tube, the inner chamber of pressure accumulation tube is provided with pressure accumulation chamber piston, there is axial aperture at the center of connector, thereby formed pressure accumulation chamber (A), isolate water cavity (B), inhaled chamber (C) and sample cavity (D) in advance, the front end of " worker " font sample chamber piston is provided with one-way valve mechanism; Become the damping throttle mechanism and forms, set gradually valve plate, sample valve, suction hose at the front end of sample tube, at the back of pressure accumulation tube installation gas filling valve by pressure accumulation chamber piston, throttling rod and connector.When the water surface extracts sample, micro-high-pressure pump is installed on gas filling valve again, is removed suction hose and replace with microsample valve.
One-way valve mechanism of the present invention, form by check valve body, nonreturn valve core, spring, spring is positioned at the nonreturn valve core back, and together place in the check valve body, one-way valve mechanism is installed in the front end center of " worker " font sample chamber piston, and nonreturn valve core exceeds the front end face of " worker " font sample chamber piston.
Change damping throttle mechanism of the present invention is made up of pressure accumulation chamber piston, throttling rod and connector, and throttling rod is fixed on the front end center of pressure accumulation chamber piston, and connector center axial aperture and throttling rod form circumferential slit.
The course of work of the present invention: before the sampling, vacuum pump at first is installed on sample valve sample cavity is vacuumized, " worker " font sample chamber piston is backed down retaining valve automatically near the front end of sample tube at this moment, makes sample cavity and the pre-chamber of inhaling be in vacuum state; Fill with clean seawater at isolation water cavity (B); According to the sampled point marine site depth of water, in pressure accumulation chamber (A), charge into the nitrogen that pressure is sampled point pressure 10% in advance by gas filling valve.
During sampling, after suction hose is aimed at hydrothermal vent, open sample valve, because the back of the body end of " worker " font sample chamber piston has from the effect of preliminary filling at pressure accumulation chamber (A) nitrogen pressure, the non-sample seawater in sample valve front end and the suction hose at first enters pre-suction chamber (C) by the retaining valve of opening, and inhales in advance after chamber (C) is full of, promoting " worker " font sample chamber piston under the effect of hydrothermal solution pressure moves backward, retaining valve is closed automatically, and at this moment pure hydrothermal solution sample enters sample cavity (D), collected specimens.In the sampling process, the mobile seawater that is promoting in the isolation water cavity (B) of " worker " font sample chamber piston passes through to become the throttling of damping throttle mechanism, thereby control its translational speed, the seawater promotion pressure accumulation chamber piston of isolating in the water cavity (B) moves, the nitrogen in compression pressure accumulation chamber (A), up to the pressure and the thermohydraulic dynamic balance of pressure accumulation chamber (A), close sample valve, finish sample collecting and pressurize and store.
During sample extraction, micro-high-pressure pump is installed on gas filling valve, is removed suction hose and replace with microsample valve.Before extracting for the first time sample vacuum pump is installed on microsample valve, is got rid of the gas between microsample valve and sample valve.During each the extraction, pump into and the isometric water of extracted amount to pressure accumulation chamber (A), to guarantee the constant voltage of sample by micro-high-pressure pump.
Adopted " worker " font sample chamber piston among the present invention especially and one-way valve mechanism has been installed at its front end.Its course of work is: because of sample chamber piston is " worker " font structure, it and sample tube have constituted pre-suction chamber (C).Before the sampling to sample cavity (D) when vacuumizing, " worker " font sample chamber piston move on to sample cavity (D) foremost and back down nonreturn valve core, open retaining valve, at this moment inhaling the connection of chamber (C) and sample cavity (D) in advance also together is evacuated, non-sample seawater during sampling in sample valve front end and the suction hose at first enters pre-suction chamber (C) by the retaining valve of opening, treat to inhale in advance after chamber (C) is full of, continuation suction along with hydrothermal solution, " worker " font sample chamber piston is removed from the front end of sample cavity (D), because the pre-pressure of inhaling chamber (C) and sample cavity (D) equates, at this moment under the effect of spring force, nonreturn valve core ejects, retaining valve is closed automatically, the non-sample seawater that makes pre-suction chamber (C) always with sample cavity (D) in sample isolate.Non-sample seawater in the process that " worker " font sample chamber piston moves in the pre-suction chamber (C) cleans the inwall of sample cavity.
Adopted change damping throttle mechanism among the present invention, its course of work is: in the sampling process, isolate the seawater in the water cavity (B), by throttling rod and connector central shaft to hole-shaped generation damping during the slit circumferentially.When beginning sampling, because of the pressure reduction in sample cavity (D) and pressure accumulation chamber (A) be maximum, and this moment, circumferentially damping segment length in slit was for the longest, and damping is maximum also.Along with proceeding of sampling, nitrogen pressure in the pressure accumulation chamber (A) raises gradually, pressure reduction reduces gradually, but the throttling rod of pressure accumulation chamber piston drive at this moment moves, circumferential slit damping segment length is shortened gradually, the damping that is produced also reduces gradually, has reached damping and pressure reduction Dynamic matching like this, thereby does not reduce the translational speed of sample chamber piston.
The present invention has substantive distinguishing features and marked improvement, and it has kept air pressure pressurize compensation technique of the prior art, titanium alloy structure material and fluororubber encapsulant technology.Its centralized procurement sample, pressurize, non-sample seawater are isolated, the sample rate automatic compensatory technique is in one, compact conformation.The one-way valve mechanism of particularly having taked " worker " font sample chamber piston and its front end to install, make pre-suction of non-sample seawater and isolation, solve the problem that contains non-sample seawater in suction hose and the sampling valve dead volume in the sample with the prior art collection, further improved the purity of sample.Simultaneously also just because of what inhale in advance that the chamber stores is the potpourri of environment seabed water and part hydrothermal solution, avoided requiring in the prior art the pre-seabed water of annotating in isolating water cavity, this potpourri is more near sample by contrast, can play better the isolation of sample cavity and the effect of its inwall cleaning, thereby omitted the technology that to gather seabed water in advance, reduced the cost and the technology difficulty of engineering.The present invention has overcome and has used fixing throttle orifice to control the weakness that amount of restriction causes sample rate to successively decrease in the prior art also because adopted change damping throttle mechanism, realizes damping and pressure reduction Dynamic matching, reaches the purpose of automatic control sample rate.The present invention is suitable for the deep-sea submarine hydrothermal solution stream sample collecting that high-fidelity requires.
Description of drawings
Fig. 1 is a complete machine structure cut-open view of the present invention.
Fig. 2 is the present invention " worker " font sample chamber piston and one-way valve mechanism enlarged drawing
Fig. 3 becomes damping throttle mechanism enlarged drawing for the present invention
Wherein: 1-pressure accumulation tube, 2-pressure accumulation chamber piston, 3-connector, 4-" worker " font sample chamber piston, 5-sample tube, 6-valve plate, 7-sample valve, 8-suction hose, 9-one-way valve mechanism, 10-change damping throttle mechanism, 11-gas filling valve, 12-microsample valve, 13-tensimeter, 14-micro-high-pressure pump, 15-spring, 16-check valve body, 17-nonreturn valve core, 18-throttling rod, A-pressure accumulation chamber, B-isolation water cavity, C-inhale in advance chamber, D one sample cavity.
Embodiment
As Fig. 1, shown in Figure 2, the present invention includes: pressure accumulation tube 1, pressure accumulation chamber piston 2, connector 3, " worker " font sample chamber piston 4, sample tube 5, valve plate 6, sample valve 7, suction hose 8, one-way valve mechanism 9, become damping throttle mechanism 10, gas filling valve 11, microsample valve 12, trace high-pressure pump 14, sample tube 5 and pressure accumulation tube 1 are separately fixed at the rear and front end of connector 3, the inner chamber of sample tube 5 is provided with the worker " font sample chamber piston 4; inner chamber of pressure accumulation tube 1 is provided with pressure accumulation chamber piston 2; there is axial aperture at the center of connector 3; thus formed pressure accumulation chamber A respectively; isolate water cavity B; inhale chamber C and sample cavity D in advance, " worker " font sample chamber piston 4 front ends are provided with one-way valve mechanism 9, become the front end center that damping throttle mechanism 10 is positioned at pressure accumulation chamber piston 2, front end at sample tube 5 sets gradually valve plate 6, sample valve 7, suction hose 8, in the back of pressure accumulation tube 1 gas filling valve 11 is set, the composition when above-mentioned part is sampled for the present invention under water; When the water surface extracts sample, micro-high-pressure pump 14 is set on gas filling valve 11, remove suction hose 8 usefulness microsample valves 12 and replace.
One-way valve mechanism 9, form by check valve body 16, nonreturn valve core 17, spring 15, spring 15 is positioned at nonreturn valve core 17 back, and together place in the check valve body 16, one-way valve mechanism 9 is installed in the front end center of " worker " font sample chamber piston 4, and nonreturn valve core 17 slightly exceeds the front end face of " worker " font sample chamber piston 4.
As shown in Figure 3, become the damping throttle mechanism, be made up of pressure accumulation chamber piston 2, throttling rod 18 and connector 3, throttling rod 18 is fixed on the front end center of pressure accumulation chamber piston 2, and connector 3 center axial aperture and throttling rod 18 form circumferential slit.
Further provide embodiments of the invention below in conjunction with accompanying drawing:
Sample tube 5 and pressure accumulation tube 1 are separately fixed at the rear and front end of connector 3, the inner chamber of sample tube is equipped with " worker " font sample chamber piston 4, the inner chamber of pressure accumulation tube is equipped with pressure accumulation chamber piston 2, there is axial aperture at the center of connector, thereby formed pressure accumulation chamber (A), isolated water cavity (B), inhaled chamber (C) and sample cavity (D) in advance, the front end of " worker " font sample chamber piston 4 is equipped with one-way valve mechanism 9, and wherein nonreturn valve core slightly exceeds the front end face of " worker " font sample chamber piston 4; Throttling rod on the piston of pressure accumulation chamber and connector center axial aperture constitute change damping throttle mechanism 10; Front end at sample tube 5 is equipped with valve plate 6, sample valve 7, suction hose 8 successively, in the back of pressure accumulation tube 1 gas filling valve 11 is installed, and constitutes the underwater sampling part of sampler thus.
Before the sampling, vacuumize by 7 pairs of sample cavities of sample valve (D), " worker " font sample chamber piston 4 abuts against the front end of sample cavity (D) and pushes up the nonreturn valve core 17 of flat one-way valve mechanism 9 at this moment, automatically open retaining valve, make sample cavity (D) and the pre-chamber (C) of inhaling be in vacuum state, the air of getting rid of in its chamber prevents sample contamination; Fill with clean seawater at isolation water cavity (B); According to the sampled point marine site depth of water, " in pressure accumulation chamber (A), charge into the nitrogen that pressure is sampled point pressure 10% in advance by gas filling valve.(for example, sampling depth is 3000 meters, and pressure is 300bar, and then the nitrogen pressure of preliminary filling is 30bar.)
When sampling under water, sampler is carried to submarine hydrothermal solution fountain sampled point by unmanned remotely controlled submersible vehicle (ROV) or manned underwater vehicle, by Robot actions, makes suction hose 8 aim at fountain, and sample valve 7 is opened in operating personnel's remote control.Because the back of the body end of " worker " font sample chamber piston 4 has from the effect of preliminary filling at pressure accumulation chamber (A) nitrogen pressure, non-sample seawater in the front end of sample valve 7 and the suction hose 8 at first enters pre-suction chamber (C) by the retaining valve of opening, after pre-suction chamber (C) is full of, promoting " worker " font sample chamber piston under the pressure effect of hydrothermal solution moves backward, at this moment under the effect of spring 15 power, nonreturn valve core 17 ejects, and retaining valve is closed automatically, pure hydrothermal solution sample enters sample cavity (D), collected specimens.In the sampling process, the mobile insulating sea water that is promoting in the isolation water cavity (B) of " worker " font sample chamber piston 4 moves the nitrogen in the compression pressure accumulation chamber (A) through promotion pressure accumulation chamber piston 2 after becoming 10 throttlings of damping throttle mechanism.Along with proceeding of sampling, sample cavity (D) reduces gradually with the pressure reduction in pressure accumulation chamber (A), and pressure accumulation chamber piston 2 drives throttling rods 18 and moves circumferential slit damping segment length is shortened gradually, thereby damping also reduces gradually, damping and pressure reduction Dynamic matching have been reached, do not reduce the translational speed of sample chamber piston, see Fig. 3.When the nitrogen of pressure accumulation chamber (A) overstock be reduced to the preliminary filling volume 1/10 the time, pressure and hydrothermal solution pressure (300bar) balance are closed sample valve 7, finish sample collecting, the pressurize storage is carried to the water surface with sampler under the back pressure of nitrogen.
During sample extraction, micro-high-pressure pump 14 is installed on gas filling valve 11, is removed suction hose 8 usefulness microsample valves 12 and replace, see Fig. 1.On microsample valve 12, vacuum pump is installed before extracting for the first time sample, is got rid of the gas of 7 of microsample valve 12 and sample valves.During each the extraction, pump into and the isometric water of extracted amount to pressure accumulation chamber (A), to guarantee the constant voltage of sample cavity by micro-high-pressure pump 14.
Claims (2)
1, a kind of pressurize deep-sea hydrothermal sampler, comprise: pressure accumulation tube (1), pressure accumulation chamber piston (2), connector (3), " worker " font sample chamber piston (4), sample tube (5), valve plate (6), sample valve (7), suction hose (8), one-way valve mechanism (9), become damping throttle mechanism (10), gas filling valve (11), it is characterized in that, one-way valve mechanism (9) is installed on " worker " font sample chamber piston (4), sample tube (5) and pressure accumulation tube (1) are separately fixed at the rear and front end of connector (3), the inner chamber of sample tube (5) is provided with the worker " font sample chamber piston (4); the inner chamber of pressure accumulation tube (1) is provided with pressure accumulation chamber piston (2); there is axial aperture at the center of connector (3); thus formed pressure accumulation chamber (A) respectively; isolate water cavity (B); inhale chamber (C) and sample cavity (D) in advance, between pressure accumulation chamber (A) and isolation water cavity (B), be equipped with and become damping throttle mechanism (10), described change damping throttle mechanism (10), by throttling rod (18), pressure accumulation chamber piston (2) and connector (3) are formed, one end of throttling rod (18) is fixed on the front end center of pressure accumulation chamber piston (2), the other end is positioned at connector (3) center axial aperture, connector (3) center axial aperture and throttling rod (18) form circumferential slit, front end at sample tube (5) sets gradually valve plate (6), sample valve (7), suction hose (8) is provided with gas filling valve (11) in the back of pressure accumulation tube (1).
2, pressurize deep-sea hydrothermal sampler according to claim 1, it is characterized in that, described one-way valve mechanism (9), form by check valve body (16), nonreturn valve core (17), spring (15), spring (15) is positioned at nonreturn valve core (17) back, and together place in the check valve body (16), one-way valve mechanism (9) is installed in the front end center of " worker " font sample chamber piston (4), and the front end of nonreturn valve core (17) protrudes the front end face of " worker " font sample chamber piston (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03129042 CN1226605C (en) | 2003-06-05 | 2003-06-05 | High-purity pressure-maintaining deep sea hot liquid sampler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03129042 CN1226605C (en) | 2003-06-05 | 2003-06-05 | High-purity pressure-maintaining deep sea hot liquid sampler |
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| CN1453567A CN1453567A (en) | 2003-11-05 |
| CN1226605C true CN1226605C (en) | 2005-11-09 |
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| CN 03129042 Expired - Fee Related CN1226605C (en) | 2003-06-05 | 2003-06-05 | High-purity pressure-maintaining deep sea hot liquid sampler |
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2003
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