CN101650270B - Mechanical handheld pontic pressure drive truth-preserving sampler - Google Patents
Mechanical handheld pontic pressure drive truth-preserving sampler Download PDFInfo
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- CN101650270B CN101650270B CN2009101020641A CN200910102064A CN101650270B CN 101650270 B CN101650270 B CN 101650270B CN 2009101020641 A CN2009101020641 A CN 2009101020641A CN 200910102064 A CN200910102064 A CN 200910102064A CN 101650270 B CN101650270 B CN 101650270B
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Abstract
The invention relates to a mechanical handheld pontic pressure drive truth-preserving sampler. The prior mechanical handheld sampler can only sample a very soft sediment sample. The mechanical handheld pontic pressure drive truth-preserving sampler comprises a mechanical handheld part, an impacting driving part and a sampling drum part, wherein a handle of the mechanical handheld part can slide up and down along a handheld bar; the impacting driving part comprises an impacting drum, a high-pressure drum, a supporting drum, a guide drum, an upper end cover, a lower end cover, a flat valve, an upper piston rod, a lower piston rod and a driving piston, wherein the impacting drum, the high-pressure drum, the supporting drum and the guide drum are coaxially arranged; the upper piston rod penetrates through the flat valve; the lower piston rod penetrates through the lower end cover, and the bottom of the lower piston rod is fixedly connected with the top of a pressure-preserving drum inside the sampling drum part; and the sampling drum part comprises the pressure-preserving drum, a sampling pipe, a movable overturning cover, a sealing piston and a spring locking dog. The mechanical handheld pontic pressure drive truth-preserving sampler can not only sample soft sediments in a deep sea but also sample harder sediments by utilizing the pontic pressure energy.
Description
Technical field
The invention belongs to mechanical equipment technical field, but relate to a kind of deep earth sampling device that utilizes deep-sea original position hydrostatic force can drive the mechanical hand-held formula pressurize of sampling, be suitable for the boring coring of all kinds of soft formations in seabed.
Technical background
For the equipment of certain depth operation under the sea, the ocean hydrostatic force can be an alternative energy source.Wherein mechanical hand-held formula sampling thief is because easy to operate and use extensively in the seabed.But,, generally all need provide power source for it by manned deep-sea vehicle or ROV for mechanical hand-held formula sampling thief; For the latent device of deep ocean work, just need carry more resource equipment for above-mentioned purpose, this is undoubtedly a kind of burden, and can have influence on the work efficiency of deep sea vehicle.And for general mechanical hand-held formula sampling thief, it can only gather very soft sediment sample, for the bigger abyssal sediment of hardness with regard to powerless (as: CN02150917.4; CN02280131.6), though some sampling thief can be used for hard sediment is taken a sample, can not realize the pressurize of sample.Therefore, but be necessary to provide a kind of new mechanical hand-held formula marine bottom sediment pressurize sampling thief, all can be gathered, can also realize fidelity, can adapt to sea bottom complex operating mode and equipment lightweight sample for soft, hard sediment.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of mechanical handheld pontic pressure drive truth-preserving sampler is provided, this sampler is fit to the boring coring of all kinds of soft formations in seabed, can pass through deep-sea manned deep-sea vehicle utilization Robot actions under water, in the seabed among a small circle carry out pointed sampling analysis.
The present invention includes the mechanical hand-held parts, impact driver part, sampler barrel parts.
The mechanical hand-held parts comprise the holding rod that vertically is fixedly installed on the upper end cover top, and holding rod is with spring outward, and handle and holding rod are connected, and can slide up and down along holding rod.
Impacting driver part comprises upper end cover, impacts tube, bottom end cover, high pressure cylinder, flat valve, guide cylinder, support tube, upper piston rod, lower piston rod, driven plunger.Upper end cover and bottom end cover are separately fixed on two end faces that impact tube, guide cylinder is arranged on the bottom of bottom end cover, flat valve and support tube are arranged in the high pressure cylinder, fixedly connected with bottom end cover with upper end cover respectively in the two ends of high pressure cylinder, fixedlying connected with bottom end cover in the bottom of support tube, fixedlys connected with the bottom of flat valve in the top, impact tube, high pressure cylinder, support tube and the coaxial setting of guide cylinder, impact in the tube being provided with leather bag.Upper end cover has the inlet opening, and the inner chamber of high pressure cylinder is in communication with the outside by the inlet opening, and bottom end cover has the ftercompction hole, and the ftercompction hole is provided with retaining valve.The bottom correspondence position of the bottom of support tube and high pressure cylinder has through hole.Driven plunger is arranged in the support tube, all fixedlys connected with driven plunger in the bottom of upper piston rod and the top of lower piston rod.Described flat valve comprises the flow valve body that the flow spool is outer with being placed on the flow spool, fixedlys connected with top cover in the top of flow valve body, and top cover is fixedlyed connected with the sidewall of high pressure cylinder.
The bottom that upper piston rod passes top cover, flow spool and flow valve body successively is provided with.Along the circumference of upper piston rod from top to bottom have successively ring groove, in go up ring groove, in ring groove and following ring groove down, central shaft along upper piston rod has center pit and following center pit, one end opening of last center pit is communicated with last ring groove bottom opening in top, the other end of upper piston rod, one end opening of following center pit in the bottom of upper piston rod, the other end with in go up the ring groove bottom opening and be communicated with, following ring groove bottom opening is connected with following center pit.Lower piston rod passes the bottom end cover setting, fixedlys connected in the top of the pressurize tube in the bottom of lower piston rod and the sampler barrel parts.
Described flow valve body is a cylinder barrel shaped, the internal diameter coupling of external diameter and high pressure cylinder, and the inwall middle part of flow valve body has two parallel annular grooves along circumference, and the sidewall of flow valve body has water service pipe and following water service pipe along same axis.The bottom that the outlet pass that one end and the top cover of last water service pipe are offered is communicated with, the other end is opened on the upper, annular groove; Bottom, the other end that one end of following water service pipe directly is opened on the flow valve body is opened on the bottom of lower annular groove.The top of flat valve body sidewall radially has limbers, bottom and radially has down limbers, middle part and radially have osculum, the position of opening with high pressure cylinder sidewall is corresponding respectively for last limbers, following limbers and osculum, and the position, limbers has the limbers on the top cover sidewall correspondence.
Described flow spool comprises three sections right cylinders, the internal diameter coupling of upper and lower two sections diameter and flow valve body, and the diameter of interlude is less than upper and lower two sections diameter, and the longitudinal section of flow spool integral body is I-shaped, wherein is recessed into the annular water-flowing trough in the middle part.
The sampler barrel parts comprise pressurize tube, stopple coupon, movable flip, seal piston, spring latch.The cross section of described pressurize tube is a convex shape, have pressure compensation holes on the pressurize tube, be provided with movable flip and pressurize tube bottom end cover in the pressurize tube, the center of pressurize tube bottom end cover has center pit, movable flip is connected with pressurize tube bottom end cover by hinge, and the position is corresponding with center pit.Stopple coupon passes the center pit setting, and the bottom of stopple coupon is conical, fixedlys connected with the sampling base in the top of stopple coupon, and the sampling base is provided with and seals piston, and corresponding sample pipe position is provided with spring latch in the pressurize tube.Steel wire penetrating pressurize tube top, an end with seal that piston is fixedly connected, the other end is connected with mechanical arm.One end of ftercompction flexible pipe by retaining valve be communicated with the ftercompction hole, the other end is communicated with pressure compensation holes.
The present invention compares with background technology, the beneficial effect that has is: it has utilized the deep-sea hydrostatic pressure energy, combine " segregation drive " and " vibratory drive " two kinds of drive forms, can utilize the gravitional force and the deep-sea hydrostatic pressure of sampler itself can carry out work, and need not provide power by deep sea vehicle, can adapt to sea bottom complex operating mode and the lightweight of the equipment of realization, can gather the soft sludge at deep-sea, can gather harder sediment again, and on to harder sedimental acquisition mode, have its special advantages, and at the fidelity sampling that can realize sample.Apparatus of the present invention are simple to operate, and being that a cover is special utilizes mechanical arm to carry out the passive sampling apparatus of sediment sampling for ROV and manned deep-sea vehicle at the deep-sea.
Description of drawings
Fig. 1 is a general structure synoptic diagram of the present invention;
Fig. 2 is a flat valve structural representation among Fig. 1.
Embodiment
As Fig. 1, mechanical handheld pontic pressure drive truth-preserving sampler comprises the mechanical hand-held parts, impacts driver part, sampler barrel parts.
The mechanical hand-held parts comprise the holding rod 2 that vertically is fixedly installed on upper end cover 4 tops, the holding rod 2 outer springs 3 that are with, and handle 1 is connected with holding rod 2, can slide up and down along holding rod 2.
Impacting driver part comprises upper end cover 4, impacts tube 5, bottom end cover 10, high pressure cylinder 6, flat valve, guide cylinder 13, support tube 7, upper piston rod 8, lower piston rod 12, driven plunger 9.Upper end cover 4 and bottom end cover 10 are separately fixed on two end faces that impact tube 5, guide cylinder 13 is arranged on the bottom of bottom end cover 10, flat valve and support tube 7 are arranged in the high pressure cylinder 6, fixedly connected with bottom end cover 10 with upper end cover 4 respectively in the two ends of high pressure cylinder 6, fixedlying connected with bottom end cover 10 in the bottom of support tube 7, fixedlys connected with the bottom of flat valve in the top, impact tube 5, high pressure cylinder 6, support tube 7 and guide cylinder 13 coaxial settings, impact in the tube 5 being provided with leather bag 28.Upper end cover 4 has inlet opening 29, and the inner chamber of high pressure cylinder 6 is in communication with the outside by inlet opening 29, and bottom end cover 10 has ftercompction hole 24, and ftercompction hole 24 is provided with retaining valve 23.The bottom correspondence position of the bottom of support tube 7 and high pressure cylinder 6 has through hole.Driven plunger 9 is arranged in the support tube 7, all fixedlys connected with driven plunger 9 in the top of the bottom of upper piston rod 8 and lower piston rod 12.Flat valve comprises flow spool 25 and the flow valve body 26 that is placed on outside the flow spool 25, fixedlys connected with top cover 27 in the top of flow valve body 26, and top cover 27 is fixedlyed connected with the sidewall of high pressure cylinder 6.
As Fig. 2, the bottom that upper piston rod 8 passes top cover 27, flow spool 25 and flow valve body 26 successively is provided with.Along the circumference of upper piston rod 8 from top to bottom have successively ring groove 42, in go up ring groove 38, in ring groove 37 and following ring groove 34 down.Central shaft along upper piston rod 8 has center pit 45 and following center pit 35, one end opening of last center pit 45 is communicated with last ring groove 42 bottom openings in top, the other end of upper piston rod 8, one end opening of following center pit 35 in the bottom of upper piston rod 8, the other end with in go up ring groove 38 bottom openings and be communicated with, following ring groove 34 bottom openings are connected with following center pit 35.Lower piston rod 12 passes bottom end cover 10 setting, fixedlys connected in the top of the pressurize tube 14 in the bottom of lower piston rod 12 and the sampler barrel parts.
As Fig. 2, flow valve body 26 is a cylinder barrel shaped, the internal diameter coupling of external diameter and high pressure cylinder 6, and the inwall middle part of flow valve body 26 has two parallel annular grooves along circumference, and the sidewall of flow valve body has water service pipe 31 and following water service pipe 33 along same axis.One end of last water service pipe 31 and the bottom that the outlet pass 30 that top cover 27 is offered is communicated with, the other end is opened on upper, annular groove 41; Bottom, the other end that one end of following water service pipe 33 directly is opened on flow valve body 26 is opened on the bottom of lower annular groove 40.The top of flow valve body 26 sidewalls radially has limbers 43, bottom and radially has down limbers 36, middle part and radially have osculum 39, the position of opening with high pressure cylinder 6 sidewalls is corresponding respectively for last limbers 43, following limbers 36 and osculum 39, and 43 positions, limbers have limbers 44 on the top cover 27 sidewall correspondences.
As Fig. 1, the sampler barrel parts comprise pressurize tube 14, stopple coupon 19, movable flip 20, seal piston 15, spring latch 16.The cross section of pressurize tube 14 is a convex shape, have pressure compensation holes 21 on the pressurize tube 14, be provided with movable flip 20 and pressurize tube bottom end cover 18 in the pressurize tube 14, the center of pressurize tube bottom end cover 18 has center pit, movable flip 20 is connected with pressurize tube bottom end cover 18 by hinge, and the position is corresponding with center pit.Stopple coupon 19 passes the center pit setting, and the bottom of stopple coupon 19 is conical, fixedlys connected with sampling base 17 in the top of stopple coupon 19, and sampling base 17 is provided with and seals piston 15, and corresponding sample pipe 19 positions are provided with spring latch 16 in the pressurize tube 14.Wire rope 11 passes pressurize tube 14 tops, an end with seal that piston is 15 fixedly connected, the other end is connected with mechanical arm.One end of ftercompction flexible pipe 22 by retaining valve 23 be communicated with ftercompction hole 24, the other end is communicated with pressure compensation holes 21.
The course of work that this deep-sea hydrostatic pressure drives the fidelity sampling device is as follows:
1. sampler is carried into the deep-sea by deep sea vehicle and is wanted the place of sampling, the sampler state (as shown in Figure 1) of this moment, and the tip position space of high pressure cylinder 7 has entered high pressure sea water by inlet opening 29, and is full of the headroom of high pressure cylinder; High pressure sea water flow into ring groove 42 residing positions through the last center pit 45 of upper piston rod 8 afterwards, makes the upper end of water distribution spool 25 be in high pressure; The lower end of water distribution spool 25 because upper piston rod 8 in down ring groove 37 and following limbers 36 are being communicated with and impact the interior low-voltage space of tube 5 and be in low pressure, the pressure differential effect of both ends of the surface makes flow spool 25 be in the smallest limit position up and down, sealed upper, annular groove 41 thus and closed water service pipe 31, be communicated with lower annular groove 40 simultaneously and opened osculum 39 and following water service pipe 33.For above-mentioned reasons, following water service pipe 33, annular water-flowing trough 32, osculum 39 is communicated with into a passage makes the upper space of driven plunger 9 be in low pressure, because the following end spaces of driven plunger 9 always is being communicated with low-pressure cavity, so driven plunger is the suffered pressure equilibrium in two ends about in the of 9, and the suffered also mutual balance of pressure of pressurize tube 14 upper and lower sides, so each parts of whole sampler will be in state shown in Figure 1 under action of gravity.
2. when preparing to start working, mechanical arm holding handle 1 is vertically inserted sampler to the marine bottom sediment certain depth till can not continuing to insert again.In this process, stopple coupon has been subjected to the reacting force of marine bottom sediment and power has been passed to spring latch mechanism 16, spring latch 16 passes to reacting force lower piston rod 12 and has passed to upper piston rod 8 through driven plunger 9 through pressurize tube 14, makes stopple coupon 19, pressurize tube 14, lower piston rod 12, driven plunger 9 and upper piston rod 8 all move up and contacts up to the lower surface of the top of pressurize tube 14 end face and bottom end cover 10.This time, upper piston rod 8 also will be in its limes superiors position, going up ring groove 38 in the upper piston rod 8 is communicated with the high pressure sea water on high pressure cylinder 6 tops and is communicated with the perforate of ring groove 34 down through the following center pit 35 that the central shaft of upper piston rod 8 has and connect the lower surface of water distribution spool 25 and make water distribution spool 25 lower surfaces be in high pressure, ring groove 37 is by the limbers 44 of last limbers 43 and correspondence position thereof under simultaneously, be communicated with low-pressure cavity and making water distribution spool 25 upper end surfaces in low pressure, pressure differential allows water distribution spool 25 move, be moved upwards up to the limes superiors position, open upper, annular groove 41 thus and be communicated with water service pipe 31, also open lower annular groove 40 simultaneously and be communicated with time water service pipe 33, but closed osculum 39.Like this, the seawater outlet pass 30 that top cover 27 is offered of will flowing through, last water service pipe 31, annular water-flowing trough 32 and following water service pipe 33 enter into the last end spaces of driven plunger 9, make the last end spaces of driven plunger 9 be in high pressure, because the upper space in the high pressure cylinder 6 always is in high pressure, at this time, the impact driver element of whole sampler will be subjected to a hydrostatic force effect that makes progress, and this acting force jack-up impact unit is up to the highest extreme position, and spring 3 also will be compressed.The relative position of stopple coupon 19, pressurize tube 14, lower piston rod 12, driven plunger 9 and upper piston rod 8 changes simultaneously, and sampler is got back to state shown in Figure 1 again, and upper piston rod 8 will be in its smallest limit position.
When upper piston rod 8 will be in its smallest limit position, high pressure sea water flow into ring groove 42 residing positions through the last center pit 45 of upper piston rod 8, makes the upper end of water distribution spool 25 be in high pressure; With ring groove 37 and following limbers 36 are being communicated with the low-pressure cavity in the impact tube 5 and are making the lower end of water distribution spool 25 be in low pressure at present, the pressure differential effect makes water distribution spool 25 be in the smallest limit position once more: sealed upper, annular groove 41 and closed water service pipe 31, be communicated with lower annular groove 40 simultaneously and opened osculum 39.The upper space of driven plunger 9 is because following water service pipe 33, annular water-flowing trough 32, osculum 39 is interconnected and is in low pressure, and the following end spaces of driven plunger 9 always connects low-pressure cavity, the impact unit of sampler will descend under action of gravity thus, the top end face of the lower surface bump pressurize tube 14 of bottom end cover 10, the elastic potential energy of spring 3 also will discharge, gravitional force and elastic potential energy are passed to dead bolt 16 through pressurize tube 14 and are passed to stopple coupon 19 again, make stopple coupon insert the sediment certain depth and stop.Sampler is finished an one way " piling " action, and sampler repeats above-mentioned action, reaches balance up to low-pressure cavity maritime interior waters pressure and extraneous seawater pressure, and hydrostatic force can exhaust, and sampling finishes.
3. after sampling finished, sampler reclaimed.This moment mechanical arm another manual work, the holding rod that is placed in guide cylinder 13 lateral walls that pulling wire rope 11 connects, then piston 15 is sealed in wire rope 11 pullings, seal piston 15 move up earlier a bit of distance and and the inclined-plane of dead bolt 16 contact, back down dead bolt, continue pulling wire rope 11 stopple coupon 19 is drawn in pressurize cylindrical shell 14 and passed dead bolt 16; In the middle of said process, thereby when sealing piston 15 drive sampling bases 17 drive stopple coupons, the samples in the stopple coupon 19 descend, and the petal of stopple coupon 19 bottoms closes up the cut-out sediment, and prevents that sample from falling down; When stopple coupon 19 passes dead bolt 16, seal piston 15 and will finish the sealing action of pressurize tube upper end with the groove fit on pressurize tube 14 tops, cross when renovating 20 when stopple coupon 19 simultaneously, renovate 20 and will finish the sealing action of pressurize tube lower end following the turning over of the effect of torsion spring with pressurize tube bottom end cover 18.Stopple coupon 19 enters in the pressurize tube 14 fully afterwards, and dead bolt 16 blocks stopple coupon does not fall it.Mechanical arm moves once more, and pulling handle 1 is taken back deep sea vehicle with sampler.
When sampler reclaimed, the seawater pressure in the low-pressure cavity was than the pressure height of outside seawater, and the lower surface of flow spool 25 is by ring groove 37 down in the upper piston rod 8, and following limbers 36 is communicated with low-pressure cavity makes water distribution spool lower end high pressure; The upper surface of flow spool 25 is by last center pit 45, ring groove 42 in the connection and be in low pressure, so water distribution spool 25 is in the limes superiors position, closed osculum 39 therefrom, and allow the interior high pressure sea water of whole low-pressure cavity be sealed, in case sampler reclaims the ambient pressure reduction like this, impact the high pressure sea water and leather bag 28 synergy of low-pressure cavity in the tube 5, allow high pressure sea water flow through retaining valve by ftercompction hole 24, pass through ftercompction flexible pipe 22 again, flow to pressure compensation holes 21 and flow in the pressurize tube 14 pressurize of realization sample.
Claims (1)
1. mechanical handheld pontic pressure drive truth-preserving sampler comprises the mechanical hand-held parts, impacts driver part, sampler barrel parts, it is characterized in that:
The mechanical hand-held parts comprise the holding rod that vertically is fixedly installed on the upper end cover top, and holding rod is with spring outward, and handle and holding rod are connected, and can slide up and down along holding rod;
Impacting driver part comprises upper end cover, impacts tube, bottom end cover, high pressure cylinder, flat valve, guide cylinder, support tube, upper piston rod, lower piston rod, driven plunger; Upper end cover and bottom end cover are separately fixed on two end faces that impact tube, guide cylinder is arranged on the bottom of bottom end cover, flat valve and support tube are arranged in the high pressure cylinder, fixedly connected with bottom end cover with upper end cover respectively in the two ends of high pressure cylinder, fixedlying connected with bottom end cover in the bottom of support tube, fixedlys connected with the bottom of flat valve in the top, impact tube, high pressure cylinder, support tube and the coaxial setting of guide cylinder, impact in the tube being provided with leather bag; Upper end cover has the inlet opening, and the inner chamber of high pressure cylinder is in communication with the outside by the inlet opening, and bottom end cover has the ftercompction hole, and the ftercompction hole is provided with retaining valve; The bottom correspondence position of the bottom of support tube and high pressure cylinder has through hole; Driven plunger is arranged in the support tube, all fixedlys connected with driven plunger in the bottom of upper piston rod and the top of lower piston rod; Described flat valve comprises the flow valve body that the flow spool is outer with being placed on the flow spool, fixedlys connected with top cover in the top of flow valve body, and top cover is fixedlyed connected with the sidewall of high pressure cylinder;
The bottom that upper piston rod passes top cover, flow spool and flow valve body successively is provided with; Along the circumference of upper piston rod from top to bottom have successively ring groove, in go up ring groove, in ring groove and following ring groove down, central shaft along upper piston rod has center pit and following center pit, one end opening of last center pit is communicated with last ring groove bottom opening in top, the other end of upper piston rod, one end opening of following center pit in the bottom of upper piston rod, the other end with in go up the ring groove bottom opening and be communicated with, following ring groove bottom opening is connected with following center pit; Lower piston rod passes the bottom end cover setting, fixedlys connected in the top of the pressurize tube in the bottom of lower piston rod and the sampler barrel parts;
Described flow valve body is a cylinder barrel shaped, the internal diameter coupling of external diameter and high pressure cylinder, and the inwall middle part of flow valve body has two parallel annular grooves along circumference, and the sidewall of flow valve body has water service pipe and following water service pipe along same axis; The bottom that the outlet pass that one end and the top cover of last water service pipe are offered is communicated with, the other end is opened on the upper, annular groove; Bottom, the other end that one end of following water service pipe directly is opened on the flow valve body is opened on the bottom of lower annular groove; The top of flat valve body sidewall radially has limbers, bottom and radially has down limbers, middle part and radially have osculum, the position of opening with high pressure cylinder sidewall is corresponding respectively for last limbers, following limbers and osculum, and the position, limbers has the limbers on the top cover sidewall correspondence;
Described flow spool comprises three sections right cylinders, the internal diameter coupling of upper and lower two sections diameter and flow valve body, and the diameter of interlude is less than upper and lower two sections diameter, and the longitudinal section of flow spool integral body is I-shaped, wherein is recessed into the annular water-flowing trough in the middle part;
The sampler barrel parts comprise pressurize tube, stopple coupon, movable flip, seal piston, spring latch; The cross section of described pressurize tube is a convex shape, have pressure compensation holes on the pressurize tube, be provided with movable flip and pressurize tube bottom end cover in the pressurize tube, the center of pressurize tube bottom end cover has center pit, movable flip is connected with pressurize tube bottom end cover by hinge, and the position is corresponding with center pit; Stopple coupon passes the center pit setting, and the bottom of stopple coupon is conical, fixedlys connected with the sampling base in the top of stopple coupon, and the sampling base is provided with and seals piston, and corresponding sample pipe position is provided with spring latch in the pressurize tube; Steel wire penetrating pressurize tube top, an end with seal that piston is fixedly connected, the other end is connected with mechanical arm; One end of ftercompction flexible pipe by retaining valve be communicated with the ftercompction hole, the other end is communicated with pressure compensation holes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101020641A CN101650270B (en) | 2009-08-25 | 2009-08-25 | Mechanical handheld pontic pressure drive truth-preserving sampler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101020641A CN101650270B (en) | 2009-08-25 | 2009-08-25 | Mechanical handheld pontic pressure drive truth-preserving sampler |
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| CN101650270A CN101650270A (en) | 2010-02-17 |
| CN101650270B true CN101650270B (en) | 2011-01-12 |
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| CN2009101020641A Expired - Fee Related CN101650270B (en) | 2009-08-25 | 2009-08-25 | Mechanical handheld pontic pressure drive truth-preserving sampler |
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- 2009-08-25 CN CN2009101020641A patent/CN101650270B/en not_active Expired - Fee Related
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| RU2802320C1 (en) * | 2022-12-26 | 2023-08-24 | Федеральное государственное бюджетное учреждение науки Институт экологии растений и животных Уральского отделения Российской академии наук | Sampling device |
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