CN1731125A - Self-sealing type deep-sea pressure-tight sampling control valve - Google Patents
Self-sealing type deep-sea pressure-tight sampling control valve Download PDFInfo
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- CN1731125A CN1731125A CN 200510028442 CN200510028442A CN1731125A CN 1731125 A CN1731125 A CN 1731125A CN 200510028442 CN200510028442 CN 200510028442 CN 200510028442 A CN200510028442 A CN 200510028442A CN 1731125 A CN1731125 A CN 1731125A
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Abstract
The invention relates to a self-sealing deep sea pressurize sampling control valve in the field of ocean technology apparatus. The apparatus comprises: a spring seat, a pre-compressed spring, an O-type sealed coil, a valve core rod, a valve body, a piston return spring, a piston, a spacing nut, a driving spring, a driving block, a cylinder and an end cover, wherein the valve core rod arranges an O-type sealed coil; the valve core rod, the pre-compressed spring and the spring seat are in turn positioned inside the valve body; the piston return spring is positioned on the outside of the piston; the piston is covered on the valve core rod; the spacing nut is positioned on the top of the valve core rod; one end of the cylinder is covered on the piston and the piston return spring and is connected with the valve body, while the other end arranges the driving spring, the driving block and the end cover.
Description
Technical field
What the present invention relates to is a kind of valve of field of ocean engineering, specifically, is a kind of self-sealing type deep-sea pressure-tight sampling control valve.
Background technology
In order to carry out ocean research, usually need to gather ad-hoc location under water, specific environment, the fluid sample of special component is analyzed and researched.For the accuracy that guarantees to analyze and research, the sample that requires usually to be gathered can keep original physical and chemical composition and state, as purity, pressurize, insulation and maintenance phase etc.For example, submarine hydrothermal solution is a kind of liquid that is distributed in the fountain ejection in seabed, ocean, generally is positioned at 1000 meters～6000 meters depth of waters, and chemical constitution in this hydrothermal solution and microorganism have very high value to the research of origin of life and submarine hydrothermal solution mineralization.This liquid just studied to gather real sample in position.Common way is to take a sample by the special-purpose hydrothermal solution sampler on manned or the unmanned underwater vehicle's mechanical arm.According to the needs of difference research, sampling is divided into not two kinds of gastight samplings and gastight sampling.Gastight sampling is that the pressure of keeping seabed in-situ acquisition point (being the hydrothermal solution spout) in the whole process is being gathered, stored and extract to sample.The research of pressure keeping sampler, except that relating to technology such as sampler container and sample pressurize, another gordian technique is exactly can be by the pressure-tight sampling control valve of underwater vehicle straighforward operation.Because hyperbaric environment outside this valve is in when the big degree of depth in seabed, normal pressure inner high voltage environment outside when water surface pressurize, being in again, its external and internal pressure alternate in the process of liquid sampling and pressurize storage, therefore, require this operation valve bearing under the inside and outside two way alternate condition of high voltage, can satisfy the control requirement that long term seal pressurize requirement can be satisfied underwater vehicle again.High pressure of the prior art is by operation valve, generally adopts artificial rotation valve handle or gas-powered mode to control usually with in the high tension loop under the atmospheric pressure environment by land, is limited to above-mentioned requirements, can not directly use as deep-sea pressure-tight sampling control valve.Domestic correlation technique also is in the research exploratory stage at present, also has only country few in number to develop research in the world, and the method for employing has the valve handle by motor rotation high-pressure stop valve to carry out switch control.
Find by prior art documents, a kind of airtight constant voltage hydrothermal solution sampler of the up-to-date exploitation of U.S. marine technology research institute (WHOI) adopts is that the method for motor-driven stop valve realizes the gastight sampling control in the ultra-high voltage environment, referring to: " A new gas-tight isobaric sampler forhydrothermal fluids " (novel airtight pressurize hydrothermal solution sampler) literary composition that people such as Jeffrey S.Seewald deliver on Deep-Sea Research (deep-sea research) I 49 (2001) 189-196.The sampling valve of this device is a common ultra-high pressure needle valve, by the deceleration DC MOTOR CONTROL.The deceleration direct current generator is installed in and is full of in the silicone oil plastic chamber, is used for guaranteeing internal and external pressure balance, and the output shaft of motor is connected with valve handle by shaft coupling.A control enclosure that is placed in the underwater vehicle is controlled turning to of motor, mode with direct rotation valve handle opens or closes needle-valve, operating personnel determine by the locked rotor current (being peak torque) of monitoring motor whether needle-valve is all beaten and open or close valve, and promptly high point valve power is to turn round square to determine by the maximum of motor.There is following tripartite planar defect in the motor-driven regular tap valve of this usefulness: one, because employing motor-driven, each sampler all wants underwater vehicle that power supply is provided, control separately, owing to need carry a large amount of sampler during deep earth sampling, the serious interference ground of power lead has influenced sampling operation, and has taken the resource of underwater vehicle; Its two owing to be in hyperbaric environment, drive motor needs oil-filled sealing, must come the inside and outside differential pressure of balanced seal cavity with specific compensation mechanism, technical sophistication, the cost high reliability is low; Its three because needle is to be determined by the moment of torsion of motor to the size that compresses sealing force of valve port, when pressurize, along with the depth of water reduces, promptly reducing of valve port external pressure pressed in making and is much higher than external pressure, needle compresses sealing force and can reduce valve port, thereby reduces the pressurize effect, even leaks.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of self-sealing type deep-sea pressure-tight sampling control valve is provided, adopted the strong conical surface seal structure of sealing, the snap-in force of its sealing valve port face, all increase along with the increase of inside and outside bidirectional pressure difference, thereby sealing also strengthens thereupon, and can control the switch of this valve in the big degree of depth under water in the mode of direct promotion by the push action cylinder on the underwater vehicle mechanical arm.
The present invention is achieved through the following technical solutions, the present invention includes: spring base, pre-compressed spring, O-ring seals, valve core rod, valve body, piston reset spring, piston, limit screw cap, driving spring, drive block, sleeve, end cap, be provided with O-ring seals in the valve core rod, valve core rod, pre-compressed spring and spring base are located in the valve body successively, the outside of piston is provided with piston reset spring, piston bush is on valve core rod, limit screw cap is located at the valve core rod top, one end of sleeve is enclosed within on piston and the piston reset spring and with valve body and is connected, and is provided with driving spring and drive block in the other end and is provided with end cap.
Except the sealing valve port and piston, valve body and valve core rod formation hermetically-sealed construction of valve body, all the other cavitys are the non-tight structure.
Described piston, valve body and valve core rod constitute the slipper seal structure.
The valve port of described valve body is a conical surface seal.
The outer diameter D 2 of described piston is greater than the diameter D1 in valve body sealing valve port cross section.
When the present invention installs, be that environmental pressure is under the normal pressure situation, adjust and lock limit screw cap and make piston reset spring be in free state, adjust end cap and make driving spring also be in free state, at this moment, the pressure of pre-compressed spring generation satisfies the seal request under the valve port normal pressure.When the present invention is installed on the pressurize sample storage container and is carried under water by underwater vehicle, increase along with the depth of water, environmental pressure increases, the inside and outside differential pressure of annular seal space increases, piston makes it move to the valve port direction along valve core rod at the effect lower compression piston reset spring of external pressure, up to the spacing position of end face.Because the sealed section diameter on the valve body sealing valve port face is greater than the piston inner diameter of piston and valve core rod sealing place, increase along with external pressure, area difference and the pressure that produces (being called for short the valve port difference force) makes valve port conical surface snap-in force increasing thus, the sealing of valve port is also along with the increase of the degree of depth is more and more stronger.After arriving the deep-sea sampled point, promote drive block compressible drive spring in the sleeve by the push action cylinder on the underwater vehicle mechanical arm, when the force of compression of driving spring overcame the precompression of pre-compressed spring and valve port difference force, valve core rod moved, finish out valve events, sampler is sampled.Can guarantee that at the O-ring seals of valve core rod termination the sample of gathering comes from suction hose fully.Owing to adopt driving spring to promote valve core rod, cushion push action cylinder and acted on the valve core rod impulsive force, prevent that the rigidity thrust of push action cylinder from directly acting on valve core rod and causing structural failure.Along with the carrying out of sampling, the sample strain in the pressurize sample storage container raises gradually, and this moment, the restoring force of piston reset spring made piston move up to its initial position to the limit screw cap direction.When sample collecting finishes, after the interior external pressure complete equipilibrium, unclamp push action cylinder, drive block resets under the effect of driving spring, and valve core rod promotes close port by pre-compressed spring, finishes the pass valve events.The pressure of the stored sample of pressurize sample storage container this moment is the pressure of sampled point.After sampling was finished, equipment reclaimed to the water surface, in this process, external pressure is more and more littler, and inside and outside differential pressure is increasing, and piston reset spring has made piston reset and spacing by limit screw cap during owing to the pass valve, the volume of sample does not change with the variation of pressure reduction, has guaranteed that sample strain is stable.Again since the external diameter of piston greater than the diameter in valve body sealing valve port cross section, the interior pressure acts on the reaction thrust to piston that is produced on this area difference, be delivered on the valve core rod by limit screw cap, make the snap-in force of valve port increasing, pressure reduction maximum when arriving the water surface, the snap-in force of valve port is also maximum, and the long-time pressurize that helps sample stores, thereby realizes that the liquid gastight sampling and the pressurize of ad-hoc location store under water.
The present invention has used high-voltage cone face seal technology, utilize the piston of pre-compressed spring and slip, when external and internal pressure difference direction is changed, the direction that the stressed maintenance always of valve port compresses, and automatic gain, have the strong more characteristics of the big more sealing of pressure reduction, overcome the deficiency that the valve port snap-in force reduces along with interior pressure increase in the prior art; Because what take is the mode of operation that the external force straight line promotes switch valve, can utilize the single on hand push action cylinder of operating machine to realize the sampling under water of a plurality of sampler, avoided the influence of drive motor connection wire pair sampling operation in the prior art; Simultaneously owing to adopt push action cylinder to promote valve core rod by driving spring, cushioned the valve core rod impulsive force effectively, the rigidity thrust that prevents push action cylinder directly acts on valve core rod and causes structural failure, has also reduced the installation of push action cylinder and the requirement of stroke accuracy; The present invention is a physical construction, has avoided the complex structure, cost height and the low problem of reliability that need structures such as pressure compensated drive motor to cause in the prior art.The present invention can be used for the controlling of sampling of fluid fidelity sampling equipment under water.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As shown in Figure 1, the present invention includes: spring base 1, pre-compressed spring 2, O-ring seals 3, valve core rod 4, valve body 5, piston reset spring 6, piston 7, limit screw cap 8, driving spring 9, drive block 10, sleeve 11, end cap 12, be provided with O-ring seals 3 in the valve core rod 4, valve core rod 4, pre-compressed spring 2 and spring base 1 are located in the valve body 5 successively, the outside of piston 7 is provided with piston reset spring 6, piston 7 is enclosed within on the valve core rod 4, limit screw cap 8 is located at valve core rod 4 tops, one end of sleeve 11 is enclosed within on piston 7 and the piston reset spring 6 and with valve body 5 and is connected, and is provided with driving spring 9 and drive block 10 in the other end and is provided with end cap 12.
Except the sealing valve port and piston 7, valve body 5 and valve core rod 4 formation hermetically-sealed constructions of valve body 5, all the other cavitys are the non-tight structure.
Described piston 7, valve body 5 and valve core rod 4 constitute the slipper seal structure.
The valve port of described valve body 5 is a conical surface seal.
The outer diameter D 2 of described piston 7 is greater than the diameter D1 in valve body 5 sealing valve port cross sections.
Claims (5)
1. self-sealing type deep-sea pressure-tight sampling control valve, it is characterized in that, comprise: spring base (1), pre-compressed spring (2), O-ring seals (3), valve core rod (4), valve body (5), piston reset spring (6), piston (7), limit screw cap (8), driving spring (9), drive block (10), sleeve (11), end cap (12), be provided with O-ring seals (3) in the valve core rod (4), valve core rod (4), pre-compressed spring (2) and spring base (1) are located in the valve body (5) successively, the outside of piston (7) is provided with piston reset spring (6), piston (7) is enclosed within on the valve core rod (4), limit screw cap (8) is located at valve core rod (4) top, one end of sleeve (11) is enclosed within piston (7) and upward and with valve body (5) is connected with piston reset spring (6), is provided with driving spring (9) and drive block (10) in the other end and is provided with end cap (12).
2. self-sealing type deep-sea pressure-tight sampling control valve according to claim 1 is characterized in that, except the sealing valve port and piston (7), valve body (5) and valve core rod (4) formation hermetically-sealed construction of valve body (5), all the other cavitys are the non-tight structure.
3. self-sealing type deep-sea pressure-tight sampling control valve according to claim 2 is characterized in that, described piston (7), valve body (5) and valve core rod (4) constitute the slipper seal structure.
4. self-sealing type deep-sea pressure-tight sampling control valve according to claim 2 is characterized in that, the valve port of described valve body (5) is a conical surface seal.
5. self-sealing type deep-sea pressure-tight sampling control valve according to claim 1 and 2 is characterized in that, the outer diameter D 2 of described piston (7) is greater than the diameter D1 in valve body (5) sealing valve port cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100284428A CN100373148C (en) | 2005-08-04 | 2005-08-04 | Self-sealing type deep-sea pressure-tight sampling control valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100284428A CN100373148C (en) | 2005-08-04 | 2005-08-04 | Self-sealing type deep-sea pressure-tight sampling control valve |
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| CN1731125A true CN1731125A (en) | 2006-02-08 |
| CN100373148C CN100373148C (en) | 2008-03-05 |
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| CNB2005100284428A Expired - Fee Related CN100373148C (en) | 2005-08-04 | 2005-08-04 | Self-sealing type deep-sea pressure-tight sampling control valve |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464229B (en) * | 2009-01-12 | 2011-01-05 | 浙江大学 | High-temperature high-pressure sampling valve used for deep sea |
| CN101504338B (en) * | 2009-03-19 | 2011-08-31 | 国家海洋局第二海洋研究所 | Anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument |
| CN103439146A (en) * | 2013-09-14 | 2013-12-11 | 淮海工学院 | Positive-pressure pneumatic type automatic water sample sampler |
| CN105697802A (en) * | 2016-04-01 | 2016-06-22 | 同济大学 | Underwater fluid collection valve |
| CN106932223A (en) * | 2017-05-11 | 2017-07-07 | 四川大学 | Pressurize cylinder sealer and pressurize coring water-tight equipment |
| CN107966321A (en) * | 2017-12-22 | 2018-04-27 | 中国科学院海洋研究所 | Deep sea in-situ fluid high throughput sampler and its sampling method based on ROV |
| CN108152075A (en) * | 2017-11-30 | 2018-06-12 | 浙江大学 | Utilize the fan-shaped deep earth sampling device of titanium alloy thin films sealing pressurize |
| CN109296582A (en) * | 2018-09-28 | 2019-02-01 | 北京全路通信信号研究设计院集团有限公司 | Bidirectional pressure difference control device, electrohydraulic point machine and bidirectional pressure difference control method |
| CN109374336A (en) * | 2018-11-12 | 2019-02-22 | 浙江大学 | Abyss deposit undisturbed gastight sampling device |
| CN112683569A (en) * | 2020-12-04 | 2021-04-20 | 浙江大学 | Novel deep-well sediment pressure-maintaining sampler based on petal compression sampling |
| CN113940319A (en) * | 2021-10-18 | 2022-01-18 | 浙江大学 | Line-driven open-close type deep-sea multi-cell biological sampling device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4329883A (en) * | 1974-04-26 | 1982-05-18 | The United States Of America As Represented By The Secretary Of The Navy | Apparatus for collecting deep-sea sediment pore water |
| CN2526817Y (en) * | 2001-10-31 | 2002-12-18 | 佟立辉 | Freeze-proof anti-theft pressure-taking sampler |
| CN1226605C (en) * | 2003-06-05 | 2005-11-09 | 上海交通大学 | High-purity pressure-maintaining deep sea hot liquid sampler |
| CN1220868C (en) * | 2003-12-21 | 2005-09-28 | 浙江大学 | Hand held type deep sea hydrothermal fidelity sampler |
| CN100390523C (en) * | 2004-03-25 | 2008-05-28 | 上海交通大学 | Small thrust straight pushing type dwell check valve under condition of ultrahigh pressure environment |
-
2005
- 2005-08-04 CN CNB2005100284428A patent/CN100373148C/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464229B (en) * | 2009-01-12 | 2011-01-05 | 浙江大学 | High-temperature high-pressure sampling valve used for deep sea |
| CN101504338B (en) * | 2009-03-19 | 2011-08-31 | 国家海洋局第二海洋研究所 | Anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument |
| CN103439146A (en) * | 2013-09-14 | 2013-12-11 | 淮海工学院 | Positive-pressure pneumatic type automatic water sample sampler |
| CN105697802A (en) * | 2016-04-01 | 2016-06-22 | 同济大学 | Underwater fluid collection valve |
| CN105697802B (en) * | 2016-04-01 | 2017-12-15 | 同济大学 | A kind of underwater fluid gathers valve |
| CN106932223A (en) * | 2017-05-11 | 2017-07-07 | 四川大学 | Pressurize cylinder sealer and pressurize coring water-tight equipment |
| CN108152075B (en) * | 2017-11-30 | 2023-08-18 | 浙江大学 | Fan-shaped deep sea sampling device utilizing titanium alloy film for sealing and pressure maintaining |
| CN108152075A (en) * | 2017-11-30 | 2018-06-12 | 浙江大学 | Utilize the fan-shaped deep earth sampling device of titanium alloy thin films sealing pressurize |
| CN107966321A (en) * | 2017-12-22 | 2018-04-27 | 中国科学院海洋研究所 | Deep sea in-situ fluid high throughput sampler and its sampling method based on ROV |
| CN107966321B (en) * | 2017-12-22 | 2024-01-26 | 中国科学院海洋研究所 | ROV-based deep sea primary bit stream high-flux sampler and sampling method thereof |
| CN109296582A (en) * | 2018-09-28 | 2019-02-01 | 北京全路通信信号研究设计院集团有限公司 | Bidirectional pressure difference control device, electrohydraulic point machine and bidirectional pressure difference control method |
| CN109296582B (en) * | 2018-09-28 | 2020-09-08 | 北京全路通信信号研究设计院集团有限公司 | Bidirectional differential pressure control device, electro-hydraulic switch machine and bidirectional differential pressure control method |
| CN109374336B (en) * | 2018-11-12 | 2020-09-25 | 浙江大学 | Deep-well sediment undisturbed pressure-maintaining sampling device |
| CN109374336A (en) * | 2018-11-12 | 2019-02-22 | 浙江大学 | Abyss deposit undisturbed gastight sampling device |
| CN112683569A (en) * | 2020-12-04 | 2021-04-20 | 浙江大学 | Novel deep-well sediment pressure-maintaining sampler based on petal compression sampling |
| CN113940319A (en) * | 2021-10-18 | 2022-01-18 | 浙江大学 | Line-driven open-close type deep-sea multi-cell biological sampling device |
| CN113940319B (en) * | 2021-10-18 | 2022-06-10 | 浙江大学 | Line-driven open-close type deep-sea multi-cell biological sampling device |
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