CN101634614A - Gravity piston type long cylindrical sediment sampler penetrating through hydrate BSR interface - Google Patents
Gravity piston type long cylindrical sediment sampler penetrating through hydrate BSR interface Download PDFInfo
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- CN101634614A CN101634614A CN200910101693A CN200910101693A CN101634614A CN 101634614 A CN101634614 A CN 101634614A CN 200910101693 A CN200910101693 A CN 200910101693A CN 200910101693 A CN200910101693 A CN 200910101693A CN 101634614 A CN101634614 A CN 101634614A
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Abstract
The invention relates to a submarine sampling device and aims at providing a gravity piston type long cylindrical sediment sampler penetrating through a hydrate BSR interface. The sampler comprises components of a fidelity sampling barrel, a stream guidance cabin, an accumulator, a hermetic cabin, a movement weight mechanism, a hanging bracket, and the like. The fidelity barrel body of the sampling barrel consists of a plurality of stainless steel pipes with trapezoidal thread interfaces, and the stainless steel pipes are screwed and connected together through annular union joints; the bottom of the hermetic cabin is provided with a cofferdam, and both sides of the cofferdam are respectively provided with a hole for connecting with rubber hoses and being fixed on a stream guidance device; a flap valve is arranged between the hermetic cabin and the cofferdam, and the bottom of the cofferdam is provided with two semicircular ports. Based on the structural optimization and sampling caliber optimization, the sampler length and the sampling depth are increased. Based on a water flushing technology on the wall of a cofferdam and two semicircular ports positioned at the bottom of the cofferdam, the invention can reduce the impact of sludge intake on the flap valve and enhance the sealing property of the lower seal of the lower hermetic cabin.
Description
Technical field
The present invention relates to a kind of benthonic sampling equipment, particularly a kind of gravity piston type long column shape deposit sampler that passes hydrate BSR interface.
Background technology
Like the method at bottom reflection interface (BSR), not the direct indication of hydrate existence on the investigation of sea bed gas hydrate resource and the common employing of the evaluation seismic section, cause the often distortion or the distortion of information of extraction but great mass of data shows BSR.Simultaneously since hydrate can only be under cryogenic high pressure could stable existence, the routine sampling means are difficult to obtain sample, and the cost of probing is too high.
Chinese invention patent CN1616944A discloses a kind of " fidelity sampling integrated deep sea sediment sampler ", can get samples such as sediment, water, gas and gas hydrate in the seabed, and carry out heat-insulation pressure keeping.The spring bolt mechanism that is fixed on the pressurized capsule body is arranged in this sampler, and it to be provided with purpose and to move on the fidelity cylindrical shell in the sampling process in order preventing, and, realize sealing thereby on sampling end back piston, move can push open to move on the spring bolt mechanism group group fidelity cylindrical shell.But this summary of the invention also exists following defective:
1, the fidelity sampling tube is made up of cutter head three parts of the fidelity cylindrical shell upper end, fidelity cylindrical shell of band sealing cone, wounded in the battle lobe mechanism, the length of whole fidelity sampling tube is limited by the fidelity cylindrical shell, can't do very longly, oversizely just can't process well, install and transport, so bring restriction for the amount of sampling;
2, in the up process of fidelity cylindrical shell, seabed earth owing to pour into into pressurized capsule on the differential pressure action, influences the pressurized capsule sealing effectiveness before flap valve cuts out;
3, carry in the process on the fidelity cylindrical shell, the sample inlet end scrapes, and to adhere to mud viscosity big, and it is clean to be difficult to rely on back taper to remove, and influence the problem that pressurized capsule seals; And carry when entering the pressurized capsule lower sealing on the fidelity tube and can produce vacuum, with mud suction seal cabin, influence sealing effectiveness.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of new gravity piston type long column shape deposit sampler that passes hydrate BSR interface is provided.
In order to overcome the above problems, the present invention is achieved through the following technical solutions.
A kind of gravity piston type long column shape deposit sampler that passes hydrate BSR interface is provided, comprises fidelity sampling tube, water conservancy diversion cabin, accumulator, pressurized capsule, weight mechanism and hang frame; The fidelity sampling tube comprises the cutter head of fidelity cylindrical shell, lining and wounded in the battle lobe mechanism; The inwall of fidelity cylindrical shell upper end has the shape corresponding conical surface mutually with the outer of piston, and establishes O-ring seal and realize sealing; The upper port of pressurized capsule has the shape corresponding conical surface mutually with the outer of fidelity cylindrical shell lower end, and establishes O-ring seal and realize sealing; Fixed connection and sealing cabin, water conservancy diversion cabin, and water conservancy diversion cabin and the equal pivot bush unit of pressurized capsule be in the fidelity cylindrical shell, and accumulator is fixed in the water conservancy diversion cabin; Spring bolt mechanism is established on pressurized capsule top, is used to limit fidelity cylindrical shell move mode; Weight mechanism comprises weight, weight cable and lever, hangs frame and comprises clamping plate, piston, main push-towing rope and release cable, and wherein main push-towing rope passes clamping plate and connects the piston that is arranged in lining, and the release cable passes clamping plate and is connected to upper end, water conservancy diversion cabin; Described fidelity cylindrical shell is the stainless-steel tube that some joints have trapezoidal thread interfaces, all corresponding lining that is provided with machine glass in the inside of every joint stainless-steel tube; Realize being spirally connected by the connector of annular between the stainless-steel tube of fidelity cylindrical shell, the one-sided of this connector xsect is "T"-shaped, establishes external thread on two "T"-shaped extended ends; After being spirally connected with stainless-steel tube, connector has identical internal diameter with lining; Described pressurized capsule bottom also is provided with cofferdam, and a hole is respectively opened in the both sides of cofferdam, connects band tubing and is fixed on the guiding device; Establish flap valve between pressurized capsule and the cofferdam, the cofferdam bottom is provided with two semicircle hatch doors.
As a kind of improvement, described accumulator is established two-way valve by the inside of pipeline connection to the fidelity sampling tube on the pipeline.
As a kind of improvement, pressure relieving valve device interface separated from the gas is housed on the fidelity cylindrical shell, be used for separating and extracting the dissolved gas of sample.
As a kind of improvement, the internal diameter of fidelity cylindrical shell upper end with equate that with the lining internal diameter lining holds out against by the inwall on rubber sheet gasket and the fidelity cylindrical shell.
As a kind of improvement, the fidelity cylinder body outer wall is provided with heat-barrier material coating.
Compared with prior art, the invention has the beneficial effects as follows:
(1) based on structure optimization, the optimization of sampling bore of fidelity cylindrical shell, sampler length and sampling depth thereof have been increased.
(2) based on the design of isolating two the semicircle hatch doors of water douching technique and cofferdam bottom on the bulkhead, can reduce the influence of mud suction, improve the sealing property of lower seal cabin lower sealing flap valve.
Description of drawings
Fig. 1 is a fidelity sampling device structural representation, and what this figure was shown also is the preceding standby condition of sampling.
Fig. 2 is the synoptic diagram that state is upwards mentioned in the sampler sampling afterwards.
Fig. 3 is the structural representation of fidelity cylindrical shell.
Embodiment
In conjunction with the accompanying drawings, the present invention is described in detail below by specific embodiment.
Among the present invention, pass the gravity piston type long column shape deposit sampler at hydrate BSR interface,
Comprise: fidelity sampling tube, water conservancy diversion cabin 2, accumulator 3, pressurized capsule 4, weight mechanism and hang frame; The fidelity sampling tube comprises the cutter head 10 of fidelity cylindrical shell 1, lining 22 and wounded in the battle lobe mechanism 9; The inwall of fidelity cylindrical shell 1 upper end has the shape corresponding conical surface mutually with the outer of piston 16, and establishes O-ring seal and realize sealing; The upper port of pressurized capsule 4 has the shape corresponding conical surface mutually with the outer of fidelity cylindrical shell 1 lower end, and establishes O-ring seal and realize sealing; 2 fixed connection and sealing cabins 4, water conservancy diversion cabin, and water conservancy diversion cabin 2 and pressurized capsule 4 equal pivot bush units are in fidelity cylindrical shell 1, and accumulator 3 is fixed in the water conservancy diversion cabin 2, and accumulator 3 is established two-way valve 8 by the inside of pipeline connection to the fidelity sampling tube on the pipeline.Pressure relieving valve 11 device interfaces separated from the gas are housed on the fidelity cylindrical shell 1, are used for separating and extracting the dissolved gas of sample.Spring bolt mechanism 18 is established on pressurized capsule 4 tops, is used to limit the move mode of fidelity cylindrical shell 1; Weight mechanism comprises weight 5, weight cable 6 and lever 7, hanging frame comprises clamping plate 15, piston 16, main push-towing rope 17 and discharges cable 19, wherein main push-towing rope 17 passes clamping plate 15 and connects the piston 16 that is arranged in lining 22, and release cable 19 passes clamping plate 15 and is connected to 2 upper ends, water conservancy diversion cabin;
Fidelity cylindrical shell 1 is the stainless-steel tube that some joints have trapezoidal thread interfaces, all corresponding lining that is provided with machine glass in the inside of every joint stainless-steel tube.Connector 21 by annular between the stainless-steel tube of fidelity cylindrical shell 1 is realized being spirally connected; The one-sided of these connector 21 xsects is "T"-shaped, establishes external thread on two "T"-shaped extended ends; After being spirally connected with stainless-steel tube, connector 21 has identical internal diameter with lining.The setting of connector 21 can increase the length of fidelity cylindrical shell 1 as required, has expanded the applicability and the replaceability of fidelity cylindrical shell 1 greatly.The internal diameter of fidelity cylindrical shell 1 upper end with equate that with lining 22 internal diameters lining 22 holds out against by the inwall of rubber sheet gasket and fidelity cylindrical shell 1 upper end, fidelity cylindrical shell 1 outer wall is provided with heat-barrier material coating.
Calculate and analysis of experimental data according to the sampler modeling analysis, the sampler sampling depth increases along with the increase of the internal diameter of fidelity cylindrical shell 1 and lining 22, increase along with the increase of fidelity cylindrical shell 1 external diameter, but increasing degree is fewer and feweri.Internal diameter more hour, corresponding sampler quality is big more, then slotting process resistance is just big more down in its sampling, when fidelity cylindrical shell 1 external diameter is big more, corresponding sampler quality is also big more, slotting process resistance is also big more down in same its sampling, and resistance reduces to some extent with the amplitude that the increase of the minimizing of internal diameter and external diameter increases.In order to reduce the following slotting resistance in the sampling process, avoid the generation of " stake effect " as far as possible, guarantee under the prerequisite of certain deadweight, to increase the internal diameter (can reach the purpose that increases inner wall area simultaneously) of lining simultaneously, reduce fidelity cylindrical shell 1 external diameter, the wall thickness that reduces lining 22 so is an effective method.Consider lining 22 structural strengths simultaneously, processing is installed and the convenience of transportation, adopts the mode that is held out against by the lining 22 of the plurality of sections organic glass material inwall by rubber sheet gasket and fidelity cylindrical shell 1 upper end to be connected to whole lining 22.
Cofferdam 12 is established in pressurized capsule 4 bottoms; Establish flap valve 13 between pressurized capsule 4 and the cofferdam 12, the isolation that is used for pressurized capsule 4 is closed; Cofferdam 12 bottoms are provided with two semicircle hatch doors 14, are used for closing of cofferdam 12, further strengthen obturation effect.
A hole 20 is respectively opened in the both sides of cofferdam 12, connects band tubing and is fixed on the guiding device 2.On fidelity cylindrical shell 1, carry in the process, the sample inlet end scrapes, and to adhere to mud viscosity big, be difficult to rely on the cavity of cofferdam 12 all to hold, influence the problem of pressurized capsule 4 lower sealings sealing, and carry on the fidelity cylindrical shell 1 when entering pressurized capsule 4 lower sealings and can produce vacuum, with mud suction seal cabin 4, influence sealing effectiveness.The present invention proposes the diversion douching technique of novelty, respectively open a hole, connect the position of band tubing to guiding device 2 in the both sides of cofferdam 12.Utilize fidelity cylindrical shell 1 to move up to produce vacuum water diversion in the process to enter, guarantee that the mud of fidelity cylindrical shell 1 outer wall can not enter in the pressurized capsule 4, reach higher pressurize success ratio.
Using method of the present invention:
Before water under the sampler, fidelity cylindrical shell 1 is positioned at pressurized capsule 4 belows, and four spring bolt mechanisms 18 of pressurized capsule 4 tops can block the upper surface of fidelity cylindrical shell 1, makes it not to move on can be in sampling process, thereby sediment is all entered in the lining 22.When sampling thief is transferred to the end off sea when also having a segment distance, after weight arrives the seabed, touch on the lever and lift, unclamp the release cable, make fidelity cylindrical shell 1 under whole sampling thief deadweight effect, freely insert in the sediment, piston 16 then after near the seabed under the effect of main push-towing rope 17 only the cable releasing speed with winch descend, rise with respect to the fidelity cylindrical shell 1 of freely falling body.Owing between piston 16 and the lining 22 better seal is arranged, thereby below piston 16, can form parital vacuum, sample is more successfully entered in the lining 22, and the friction of compensation lining 22 inwalls.
When sampler fell, pressurized capsule 4 was positioned at the top of fidelity cylindrical shell 1 always, provided down slotting power with water conservancy diversion cabin 2; When sampler reclaimed, fidelity cylindrical shell 1 passed pressurized capsule 4 from bottom to top, and flap valve 13 cuts out, and realized pressure holding function.The centre in water conservancy diversion cabin 2 is guide cylinders, and the embedded copper sheathing in its two ends is with the reliability of guaranteeing to move in the overall process that fidelity cylindrical shell 1 passes.Fidelity cylindrical shell 1 can freely falling body inserts the seabed, and the soft-sediment of submarine surface is directly carried out fidelity sampling, and the accumulator that utilizes equipment to carry keeps sample strain, and by the passive insulation of heat-barrier material coating.
When winch was received wirerope, at first by main push-towing rope 17 traction pistons, when piston 16 rose to spring bolt mechanism 18, the head of piston 16 backed down spring bolt mechanism 18, made that fidelity cylindrical shell 1 is able to rise under the drive of piston 16.At this moment, petal mechanism 9 closes up sediment sample is broken from the bottom, and sample is separated with sediment, and whole fidelity cylindrical shell 1 is raised and passes pressurized capsule 4 together from bottom to top.In pressurized capsule 4 bottoms are cofferdams 12, after fidelity cylindrical shell 1 is all by cofferdam 12, two semicircle hatch doors 14 of cofferdam 12 belows are closed under built-in locking parts effect, prevent in the fidelity cylindrical shell 1 up process, seabed earth owing to pour into into pressurized capsule 4 on the differential pressure action, influences the sealing effectiveness of pressurized capsule 4 before flap valve 13 cuts out.Behind the conical surface of the conical surface applying pressurized capsule 4 upper port correspondences of outer, fidelity cylindrical shell 1 lower end, fidelity cylindrical shell 1 drives pressurized capsule 4 again and rises.The sealing of whole fidelity sampling tube inside is then by two conical surfaces of fidelity cylindrical shell 1, and corresponding O-ring seal is realized sealing.
For extracting methane gas and other dissolved gas components that from sample, decompose, pressure relieving valve 11 is installed on the fidelity cylindrical shell 1, it is a tiny flow quantity surplus valve, this valve is connected with pressurized capsule 4, can open by the electric-hydraulic proportion mode, and carry out continuous voltage regulating, methane gas and other dissolved gas components are not fully overflowed in having the slow stress-relief process of pressure jump, and record pressure slippage with overflow mathematical relation between the gas gross, be convenient to follow-up equipment and carry out total amount and detect and analysis.The gas composition of extracting is stored in the handtailor container, can analyze its composition by the boat-carrying chromatograph, also can be sent to bank base laboratory and do further to analyze.The internal drop of fidelity cylindrical shell could be taken out sediment sample to normal pressure.
At last, it should be noted that above what enumerate only is specific embodiments of the invention.Obviously, the invention is not restricted to above embodiment, a lot of distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate all should be thought protection scope of the present invention.
Claims (5)
1, a kind of gravity piston type long column shape deposit sampler that passes hydrate BSR interface comprises fidelity sampling tube, water conservancy diversion cabin, accumulator, pressurized capsule, weight mechanism and hangs frame;
The fidelity sampling tube comprises the cutter head of fidelity cylindrical shell, lining and wounded in the battle lobe mechanism; The inwall of fidelity cylindrical shell upper end has the shape corresponding conical surface mutually with the outer of piston, and establishes O-ring seal and realize sealing; The upper port of pressurized capsule has the shape corresponding conical surface mutually with the outer of fidelity cylindrical shell lower end, and establishes O-ring seal and realize sealing;
Fixed connection and sealing cabin, water conservancy diversion cabin, and water conservancy diversion cabin and the equal pivot bush unit of pressurized capsule be in the fidelity cylindrical shell, and accumulator is fixed in the water conservancy diversion cabin; Spring bolt mechanism is established on pressurized capsule top, is used to limit fidelity cylindrical shell move mode;
Weight mechanism comprises weight, weight cable and lever, hangs frame and comprises clamping plate, piston, main push-towing rope and release cable, and wherein main push-towing rope passes clamping plate and connects the piston that is arranged in lining, and the release cable passes clamping plate and is connected to upper end, water conservancy diversion cabin;
It is characterized in that:
Described fidelity cylindrical shell is the stainless-steel tube that some joints have trapezoidal thread interfaces, all corresponding lining that is provided with machine glass in the inside of every joint stainless-steel tube; Realize being spirally connected by the connector of annular between the stainless-steel tube of fidelity cylindrical shell, the one-sided of this connector xsect is "T"-shaped, establishes external thread on two "T"-shaped extended ends; After being spirally connected with stainless-steel tube, connector has identical internal diameter with lining;
Described pressurized capsule bottom also is provided with cofferdam, and a hole is respectively opened in the both sides of cofferdam, connects band tubing and is fixed on the guiding device; Establish flap valve between pressurized capsule and the cofferdam, the cofferdam bottom is provided with two semicircle hatch doors.
2, the gravity piston type long column shape deposit sampler that passes hydrate BSR interface according to claim 1 is characterized in that described accumulator is established two-way valve by the inside of pipeline connection to the fidelity sampling tube on the pipeline.
3, the gravity piston type long column shape deposit sampler that passes hydrate BSR interface according to claim 1 is characterized in that, pressure relieving valve device interface separated from the gas is housed on the fidelity cylindrical shell, is used for separating and extracting the dissolved gas of sample.
4, the gravity piston type long column shape deposit sampler that passes hydrate BSR interface according to claim 1 is characterized in that, the internal diameter of fidelity cylindrical shell upper end with equate that with the lining internal diameter lining holds out against by the inwall on rubber sheet gasket and the fidelity cylindrical shell.
5, the gravity piston type long column shape deposit sampler that passes hydrate BSR interface according to claim 1 is characterized in that the fidelity cylinder body outer wall is provided with heat-barrier material coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910101693A CN101634614A (en) | 2009-08-18 | 2009-08-18 | Gravity piston type long cylindrical sediment sampler penetrating through hydrate BSR interface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910101693A CN101634614A (en) | 2009-08-18 | 2009-08-18 | Gravity piston type long cylindrical sediment sampler penetrating through hydrate BSR interface |
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| CN101634614A true CN101634614A (en) | 2010-01-27 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893438A (en) * | 2010-05-07 | 2010-11-24 | 上海劳雷仪器系统有限公司 | Boosting cable-laying suspender device |
| CN102336259A (en) * | 2011-08-05 | 2012-02-01 | 中海油田服务股份有限公司 | System for putting and taking back long-column shaped samplers from broadside based on fixed bulwark hull |
| CN102645353A (en) * | 2012-05-09 | 2012-08-22 | 河海大学常州校区 | Rotary sealing bottom type superficial layer in-situ sediment sampler |
| CN104458334A (en) * | 2014-12-30 | 2015-03-25 | 山东建筑大学 | Columnar sediment collection equipment for natural river channels |
| CN105445053A (en) * | 2015-12-24 | 2016-03-30 | 浙江大学 | Superficial layer spherical valve type fidelity deep-sea sediment sampling device |
| CN106644564A (en) * | 2016-10-12 | 2017-05-10 | 中国地质大学（武汉） | Deep-sea sediment gravity coring test stand and operation method thereof |
| CN108051257A (en) * | 2018-02-10 | 2018-05-18 | 中交航局第二工程有限公司 | Underwater mud back-silts object sampler and underwater sampling method |
| CN110761785A (en) * | 2019-11-26 | 2020-02-07 | 四川大学 | Pressure maintaining cabin structure with glass window |
| CN111551390A (en) * | 2020-03-26 | 2020-08-18 | 广东工业大学 | High-pressure seabed simulation system with in-situ sampling device and control method thereof |
| CN112147040A (en) * | 2020-09-27 | 2020-12-29 | 青岛海洋地质研究所 | Device and method for testing interface acting force of hydrate-sediment mixed system |
-
2009
- 2009-08-18 CN CN200910101693A patent/CN101634614A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893438A (en) * | 2010-05-07 | 2010-11-24 | 上海劳雷仪器系统有限公司 | Boosting cable-laying suspender device |
| CN102336259A (en) * | 2011-08-05 | 2012-02-01 | 中海油田服务股份有限公司 | System for putting and taking back long-column shaped samplers from broadside based on fixed bulwark hull |
| CN102336259B (en) * | 2011-08-05 | 2013-09-18 | 中海油田服务股份有限公司 | System for putting and taking back long-column shaped samplers from broadside based on fixed bulwark hull |
| CN102645353A (en) * | 2012-05-09 | 2012-08-22 | 河海大学常州校区 | Rotary sealing bottom type superficial layer in-situ sediment sampler |
| CN102645353B (en) * | 2012-05-09 | 2014-01-15 | 河海大学常州校区 | Rotary sealing bottom type superficial layer in-situ sediment sampler |
| CN104458334A (en) * | 2014-12-30 | 2015-03-25 | 山东建筑大学 | Columnar sediment collection equipment for natural river channels |
| CN104458334B (en) * | 2014-12-30 | 2017-02-22 | 山东建筑大学 | Columnar sediment collection equipment for natural river channels |
| CN105445053B (en) * | 2015-12-24 | 2018-03-30 | 浙江大学 | A kind of superficial layer ball-valve type fidelity deep sea sediment sampler |
| CN105445053A (en) * | 2015-12-24 | 2016-03-30 | 浙江大学 | Superficial layer spherical valve type fidelity deep-sea sediment sampling device |
| CN106644564A (en) * | 2016-10-12 | 2017-05-10 | 中国地质大学（武汉） | Deep-sea sediment gravity coring test stand and operation method thereof |
| CN106644564B (en) * | 2016-10-12 | 2019-02-05 | 中国地质大学（武汉） | Halmeic deposit gravity column sampling test platform and operating method |
| CN108051257A (en) * | 2018-02-10 | 2018-05-18 | 中交航局第二工程有限公司 | Underwater mud back-silts object sampler and underwater sampling method |
| CN110761785A (en) * | 2019-11-26 | 2020-02-07 | 四川大学 | Pressure maintaining cabin structure with glass window |
| CN110761785B (en) * | 2019-11-26 | 2024-01-23 | 四川大学 | Pressure maintaining cabin structure with glass window |
| CN111551390A (en) * | 2020-03-26 | 2020-08-18 | 广东工业大学 | High-pressure seabed simulation system with in-situ sampling device and control method thereof |
| CN111551390B (en) * | 2020-03-26 | 2023-03-03 | 广东工业大学 | High-pressure seabed simulation system with in-situ sampling device and control method thereof |
| CN112147040A (en) * | 2020-09-27 | 2020-12-29 | 青岛海洋地质研究所 | Device and method for testing interface acting force of hydrate-sediment mixed system |
| CN112147040B (en) * | 2020-09-27 | 2021-05-25 | 青岛海洋地质研究所 | Device and method for testing interface acting force of hydrate-sediment mixed system |
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Open date: 20100127 |