CN101504338B - Anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument - Google Patents
Anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument Download PDFInfo
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- CN101504338B CN101504338B CN 200910096875 CN200910096875A CN101504338B CN 101504338 B CN101504338 B CN 101504338B CN 200910096875 CN200910096875 CN 200910096875 CN 200910096875 A CN200910096875 A CN 200910096875A CN 101504338 B CN101504338 B CN 101504338B
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- valve
- valve rod
- driving device
- ball valve
- seabed
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Abstract
The invention relates to a sealing component and aims at providing an antipollution pressure-resistant sealing component of a benthonic tubular sampler. The component comprises a tubular sampling tube; the outside of the sampling tube is sleeved with a pressure maintaining cylinder body; a flange at the tail end of the pressure maintaining cylinder body is connected with a valve body of a ball valve; the valve body of the ball valve is connected with a valve rod driving device through a valve rod; the valve rod driving device consists of a double rack gear mechanism; a hydraulic cylinder for supplying power is connected with a rack; a gear and the valve rod are coaxial; and the rack and the gear are engaged with each other. The invention provides the valve which has a plurality of spheres and is provided with a driving mechanism respectively, realizes the pressure-resistant antipollution function, improves the gravity influence between two spheres and achieves the action of double insurance on the pressure maintaining of the sample; as a lining piston is used as the sealing component at one end of the pressure maintaining cylinder body, the space and the mechanism setting are saved; simultaneously, after the sampling is completed, the sealing component can make the sample directly enter the pressure maintaining cylinder for pressure maintaining and can also solve the problem that the sample is shaken to fall off after the sampling.
Description
Technical field
The present invention relates to a kind of seal assembly, relate to anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument in particular.
Background technology
For benthic research, the most frequently used method is still fetched sample from the seabed and is studied to scientific surveying ship.Mechanical release mechanism drives the mode that stopple coupon is sampled, and utilizes the Design of Mechanical Structure of equipment to allow sampler barrel direct sediment that inserts under action of gravity sample exactly, promptly belongs to passive sampling.
In the boat-carrying sediment sampling equipment of China, the equipment that can obtain the better quality sediment sample is multitube sampling thief and sediment fidelity sampling device at present.Because the multitube sampling thief can not fidelity, so sediment fidelity sampling device can be used for reference.
After sampling finishes, the gastight sampling tube can be carried go back to the sea level with framework under the effect of hawser, and in the process of this rising, the pressure of pressurize tube outside is in continuous reduction, every rising 100m then can fall 1MPa, final after the pressurize tube is mentioned the sea level, the pressure of pressurize tube outside reduces to zero, but its inside has still kept the original position pressure of sampling spot.The pressurize cylindrical shell because elastic deformation produces volumetric expansion, is added the distortion of other elastic bodys (as seal etc.) in the effect meeting of interior pressure, and system is difficult to reach the pressurize effect of expection, therefore also needs to realize half initiatively pressurize by the pressure boost compensation system.
With the valve of spheroid, be called ball valve as closing member.Whole-through diameter ball valve have fluid resistance little, save the energy, flow to unrestricted and start advantages such as fast.Its comprehensive gate valve than same use, stop valve, stopcock and butterfly valve etc. are all superior, adopt the high parameter ball valve to substitute the transmission valve as opening/shutting valve on the pipeline and have made in recent years development trend.
The strong collision that physical construction produces when entering pressurize cabin body and sealing inevitably at the pulling sediment sample, the result has vibrated sediment sample, even sample can come off sometimes.How to realize seabed multi-column shaped antipollution resistance to compression after employing, to guarantee that to greatest extent the sampled result and the validity of sampling initial point are new problems.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument is provided.
In order to overcome the above problems, the present invention is achieved through the following technical solutions:
A kind of anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument is provided, comprises the sampling pipe of a pipe shape, the outside sheathed pressurize cylindrical shell of sampling pipe, a terminal flange of pressurize cylindrical shell links to each other with the valve body of ball valve; The valve body of ball valve is connected with valve rod driving device by valve rod; Valve rod driving device is made up of double rack gear mechanism: provide the hydraulic cylinder of power to be connected with tooth bar, gear and valve rod are coaxial, and rack and pinion is meshing with each other.
As a kind of improvement, a framed structure is set between described ball valve body and the valve rod driving device, framed structure is connected with valve body, valve rod driving device respectively and is used for strengthening fixing.
As a kind of improvement, described ball valve adopts any one in the following form:
(1) valve body of ball valve is two or more, interconnects between the adjacent face of valve body, and each ball valve all has independently valve rod driving device;
(2) valve body of ball valve is one, and two or more ball valve cores are set in the valve body, and each ball valve core all has independently valve rod and valve rod driving device.
As a kind of improvement, the valve rod of described ball valve is antarafacial according to its axis separately to be arranged, valve rod driving device also is the antarafacial layout according to the axis of corresponding valve rod.
As a kind of improvement, described pressurize cylindrical shell is communicated with an accumulator.
As a kind of improvement,, be connected with a lining piston at sampling pipe end away from the ball valve direction; Described lining piston is " protruding " font, and the inwall of the platform surface at middle part and pressurize barrel tip flange is fitted and realized sealing, and its front end is positioned at the perforate of pressurize barrel tip flange center.
As a kind of improvement, described lining piston is made up of lining piston only, unidirectional valve seat, one-way valve piece and one-way valve spring; Described lining piston only is " protruding " font, and ring is established the seal groove of built-in O-ring seal on the circumference on the top of its protrusion, and screwed shrinkage pool be used to the to be spirally connected piston crown of hydraulic cylinder is established on its top; Described unidirectional valve seat is installed in lining piston only bottom and both axis coincide; Described one-way valve piece is installed in unidirectional valve seat inside, between retaining valve piece and the lining piston only one-way valve spring is installed; The bottom side of lining piston only is established the hole of perforation, makes retaining valve piece space of living in and lining piston only exterior.
Compared with prior art, the invention has the beneficial effects as follows:
(1) the present invention proposes valve, and driving mechanism is set respectively, realized the resistant to pollution effect of resistance to compression, and improved two spheroids gravity effect each other, played the effect of dual fail-safe for the pressurize of sample with a plurality of spheroids.
(2) the present invention proposes by the end seal of lining piston, saved space and mechanism and be provided with, can make the sample pressurize tube of directly entering carry out pressurize after sampling finishes simultaneously as the pressurize cylindrical shell.
(3) sample was shaken situation about coming off after the present invention can solve sampling.
Description of drawings
Fig. 1 is the structural representation of valve seal assembly of the present invention.
Fig. 2 is lining structure of piston and assembling synoptic diagram.
Embodiment
In conjunction with the accompanying drawings, the present invention is described in detail below by specific embodiment.
Anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument in this specific embodiment comprises the sampling pipe 101 of a pipe shape, sampling pipe 101 outside sheathed pressurize cylindrical shells 1, and pressurize cylindrical shell 1 is communicated with an accumulator.
A terminal flange of pressurize cylindrical shell 1 links to each other with the valve body 2 of ball valve by bolt; Two ball valve cores 3 are set in the valve body 2, and each ball valve core 3 all has independently valve rod 4 and valve rod driving device 5.The valve body 2 of ball valve is connected with valve rod driving device 5 by valve rod 4.A framed structure 6 is set between ball valve body 2 and the valve rod driving device 5, and framed structure 6 is connected with valve body 2, valve rod driving device 5 respectively and is used for strengthening fixing.
Valve rod driving device 5 is made up of double rack gear mechanism: provide the hydraulic cylinder of power to be connected with tooth bar, gear and valve rod 4 are coaxial, and rack and pinion is meshing with each other.Hydraulic cylinder drives tooth bar and does rectilinear motion, by the engagement of rack pinion, has changed into rotatablely moving of valve rod 4, and then drives the rotation of spool 3; The connection of two cover valve rods 4, spool 3, valve rod driving device 5 is all identical with type of drive.
For the balancing gravity influence, the valve rod 4 of two ball valves is antarafacial according to its axis separately to be arranged, valve rod driving device 5 also is the antarafacial layout according to the axis of corresponding valve rod 4.The valve rod 4 of the ball valve among Fig. 1 is an angle of 90 degrees and arranges.
At sampling pipe end, be connected with a lining piston away from the ball valve direction; Described lining piston is " protruding " font, and the inwall of the platform surface at middle part and pressurize cylindrical shell 1 terminal flange is fitted and realized sealing, and its front end is positioned at the perforate of pressurize cylindrical shell 1 terminal flange center.
The lining piston is made up of lining piston only 7, unidirectional valve seat 8, one-way valve piece 9 and one-way valve spring 10; Described lining piston only 7 is " protruding " font, and ring is established the seal groove of built-in O-ring seal on the circumference on the top of its protrusion, and screwed shrinkage pool be used to the to be spirally connected piston crown 102 of hydraulic cylinder is established on its top; Described unidirectional valve seat 8 is installed in lining piston only 7 bottoms and both axis coincide; Described one-way valve piece 9 is installed in unidirectional valve seat 8 inside, and one-way valve spring 10 is installed between retaining valve piece 8 and the lining piston only 7; The bottom side of lining piston only 7 is established the hole of perforation, makes retaining valve piece 8 spaces of living in and lining piston only 7 exterior.
The setting of lining piston is based on following consideration:
When sampling pipe 101 stretched out sampling downwards, because the existence of air, even if sampling pipe 101 inserts in the mud of sample area, sample also can't enter in the pipe.Therefore, need to be provided with the parts that to get rid of gas but can after sampling, continue to keep the sample collecting ground pressure simultaneously again.
In when sampling, it is descending that the piston crown 102 that is bolted in the hydraulic cylinder of lining piston only 7 promotes lining pistons and sampling pipe 101 downwards.This moment, the one-way valve piece 9 stressed one-way valve springs 10 that upwards promote compressed, air and unnecessary seawater are established from the bottom side of the slit between one-way valve piece 9 and the unidirectional valve seat 8, lining piston only 7 between hole, lining piston and the pressurize cylindrical shell 1 of perforation in the sampling pipe 101 slit, cylinder bottom end flanges cover through hole one tunnel discharge that provides, and stop descending until sampling pipe 101.
When the piston crown 102 of hydraulic cylinder upwards drives lining piston and sampling pipe 101 when up, the power that one-way valve piece 9 is stretched by one-way valve spring 10 closes the through hole of unidirectional valve seat 8 downwards, is deposited in slit, the cylinder bottom end flanges that seawater in the exhaust passage establishes from the bottom side of the slit between one-way valve piece 9 and the unidirectional valve seat 8, lining piston only 7 between hole, lining piston and the pressurize cylindrical shell 1 of perforation and covers through hole one tunnel discharge that provides.The stroke that hydraulic cylinder makes progress is to terminal the time, and the boss edge applying pressurize cylindrical shell 1 terminal flange of lining piston only 7 is realized upper end sealing and pressurize.The ball valve of pressurize cylindrical shell 1 lower end is closed then, realizes the sealing and the pressurize of lower end.
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.For example the valve body of ball valve can be two or more, interconnects between the adjacent face of valve body, and each ball valve all has independently valve rod driving device.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. anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument comprises it is characterized in that the sampling pipe of a pipe shape, the outside sheathed pressurize cylindrical shell of sampling pipe, and a terminal flange of pressurize cylindrical shell links to each other with the valve body of ball valve; The valve body of ball valve is connected with valve rod driving device by valve rod; Valve rod driving device is made up of double rack gear mechanism: provide the hydraulic cylinder of power to be connected with tooth bar, gear and valve rod are coaxial, and rack and pinion is meshing with each other;
At sampling pipe end, be connected with a lining piston away from the ball valve direction; Described lining piston is " protruding " font, and the inwall of the platform surface at middle part and pressurize barrel tip flange is fitted and realized sealing, and its front end is positioned at the perforate of pressurize barrel tip flange center;
Described lining piston is made up of lining piston only, unidirectional valve seat, one-way valve piece and one-way valve spring; Described lining piston only is " protruding " font, and ring is established the seal groove of built-in O-ring seal on the circumference on the top of its protrusion, and screwed shrinkage pool be used to the to be spirally connected piston crown of hydraulic cylinder is established on its top; Described unidirectional valve seat is installed in lining piston only bottom and both axis coincide; Described one-way valve piece is installed in unidirectional valve seat inside, between retaining valve piece and the lining piston only one-way valve spring is installed; The bottom side of lining piston only is established the hole of perforation, makes retaining valve piece space of living in and lining piston only exterior.
2. anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument according to claim 1, it is characterized in that, a framed structure is set between described ball valve body and the valve rod driving device, and framed structure is connected with valve body, valve rod driving device respectively and is used for strengthening fixing.
3. any one anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument according to claim 1 and 2 is characterized in that, described ball valve adopts any one in the following form:
(1) valve body of ball valve is two or more, interconnects between the adjacent face of valve body, and each ball valve all has independently valve rod driving device;
(2) valve body of ball valve is one, and two or more ball valve cores are set in the valve body, and each ball valve core all has independently valve rod and valve rod driving device.
4. anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument according to claim 3 is characterized in that, the valve rod of described ball valve is antarafacial according to its axis separately to be arranged, valve rod driving device also is the antarafacial layout according to the axis of corresponding valve rod.
5. anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument according to claim 3 is characterized in that, described pressurize cylindrical shell is communicated with an accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910096875 CN101504338B (en) | 2009-03-19 | 2009-03-19 | Anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910096875 CN101504338B (en) | 2009-03-19 | 2009-03-19 | Anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument |
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| Publication Number | Publication Date |
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| CN101504338A CN101504338A (en) | 2009-08-12 |
| CN101504338B true CN101504338B (en) | 2011-08-31 |
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| CN 200910096875 Expired - Fee Related CN101504338B (en) | 2009-03-19 | 2009-03-19 | Anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266547B (en) * | 2017-12-27 | 2020-10-27 | 中国船舶重工集团公司第七一九研究所 | Depth measuring device and depth measuring method for marine nuclear power platform |
| CN108671376B (en) * | 2018-05-31 | 2021-08-31 | 郭田 | Anti-reflux applicator for dermatology department |
| CN113532906B (en) * | 2021-07-08 | 2022-07-26 | 上海交通大学 | Sampler is fixed to deposit normal position |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU892260A1 (en) * | 1980-05-22 | 1981-12-23 | Институт Экспериментальной Метеорологии | Device for bottom sample taking |
| CN1453567A (en) * | 2003-06-05 | 2003-11-05 | 上海交通大学 | High-purity pressure-maintaining deep sea hot liquid sampler |
| CN2660506Y (en) * | 2003-12-21 | 2004-12-01 | 浙江大学 | Hand deep sea hot liquid fidelity sampler |
| CN1731125A (en) * | 2005-08-04 | 2006-02-08 | 上海交通大学 | Self-sealing type deep-sea pressure-tight sampling control valve |
-
2009
- 2009-03-19 CN CN 200910096875 patent/CN101504338B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU892260A1 (en) * | 1980-05-22 | 1981-12-23 | Институт Экспериментальной Метеорологии | Device for bottom sample taking |
| CN1453567A (en) * | 2003-06-05 | 2003-11-05 | 上海交通大学 | High-purity pressure-maintaining deep sea hot liquid sampler |
| CN2660506Y (en) * | 2003-12-21 | 2004-12-01 | 浙江大学 | Hand deep sea hot liquid fidelity sampler |
| CN1731125A (en) * | 2005-08-04 | 2006-02-08 | 上海交通大学 | Self-sealing type deep-sea pressure-tight sampling control valve |
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| CN101504338A (en) | 2009-08-12 |
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Granted publication date: 20110831 Termination date: 20170319 |