CN114354245B - Water-covering pollution-free and sediment low-disturbance repeated pressure-maintaining separation transfer device - Google Patents
Water-covering pollution-free and sediment low-disturbance repeated pressure-maintaining separation transfer device Download PDFInfo
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- CN114354245B CN114354245B CN202111474107.6A CN202111474107A CN114354245B CN 114354245 B CN114354245 B CN 114354245B CN 202111474107 A CN202111474107 A CN 202111474107A CN 114354245 B CN114354245 B CN 114354245B
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- 239000013049 sediment Substances 0.000 title claims abstract description 89
- 238000012546 transfer Methods 0.000 title claims abstract description 51
- 238000000926 separation method Methods 0.000 title claims abstract description 10
- 238000005070 sampling Methods 0.000 claims abstract description 118
- 230000007246 mechanism Effects 0.000 claims abstract description 91
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000010008 shearing Methods 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 244000005700 microbiome Species 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 20
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- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
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- Analytical Chemistry (AREA)
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Abstract
The invention relates to a deep sea sampling technology, and aims to provide an overlying water pollution-free and sediment low-disturbance repeated pressure-maintaining separation transfer device. The device comprises: the device comprises a sampling mechanism, a pushing cabin mechanism, a pressurizing mechanism and a sediment transferring mechanism; the sampling mechanism comprises a pressure maintaining cylinder, a sampling cylinder and a sampling cylinder ball valve; the pushing cabin mechanism comprises a hollow tubular pushing cabin; the pressurizing mechanism comprises a cylinder body, a piston and a push rod; the sediment transfer mechanism comprises a shear ball valve having a three-way structure. The invention can simultaneously realize the pressure maintaining transfer of the overlying water and the sediment, and can ensure that the overlying water is not polluted by other liquid after the transfer. The sediment is transferred out of the sampler through the secondary sampling tube instead of being transferred out like liquid after being stirred and diluted as in the prior art, so that the integrity of sediment samples and the activity of microorganisms can be well ensured.
Description
Technical Field
The invention relates to a deep sea sampling technology, in particular to a pressure-maintaining separation transfer culture technology based on methane leakage interface sediment and overlying water sampling completion, and especially relates to a device for overlying water pollution-free pressure-maintaining transfer and sediment low-disturbance multiple transfer.
Background
The sampling of the submarine sediment has important significance in the aspects of knowing the earth environment transition, predicting the long-term change of future climate, searching the submarine new energy natural gas hydrate, researching the diversity of marine extreme microorganisms, developing and applying biological gene resources and the like. For deep sea microbiological ground laboratory culture research and sediment and chemical component transportation research of overlying seawater, a set of equipment capable of realizing pressure-maintaining separation culture of samples is needed. The development of submarine pressure maintaining separation systems and testing techniques, the research of methane leakage and the influence and mechanism of methane leakage on the marine environment from a multidisciplinary perspective, are also urgent demands of national energy and environmental significant strategies. International research on methane leakage at this interface is mainly based on fixed-point long-term monitoring, but detection of regional methane leakage is relatively lacking, which is due to the relative lack of mobile detection and high-fidelity sampling techniques at this interface, and the relative transfer and testing techniques are also relatively weak.
At present, sampling operation is carried out on deep sea methane leakage interface sediment and overlying water thereof by general equipment. For example, china patent application No. 'a full stratum sediment sampler' (application No.: CN 202011516768.6) 'a sampler suitable for high sampling rate seabed surface sediment sampler and sampling method' (application No.: CN 202011101921.9) 'a long core gravity piston sampler' (application No.: CN 98245305.1) and the like. However, these conventional transfer devices of the conventional sampling apparatus greatly limit the calculation of methane blowby area flux and the in-depth research of the evolution of the geological environment system because they cannot maintain pressure or disturb much or acquire the deposit water-over interface or provide the deposit and water-over transfer interface, thereby causing the pressure loss of the sample, the loss of gas phase components, the death of microorganisms, the change of oxidation state and the decomposition of organic components.
Therefore, developing a pressure maintaining separation transfer technology capable of simultaneously realizing high-purity separation of overlying water and repeated transfer of sediment, and simultaneously realizing low pollution and low disturbance of mixing disturbance of the overlying water and the sediment in a sampler, provides necessary technical means for accurately knowing regional methane leakage flux and influence mechanism of regional methane leakage flux on marine environment.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the defects in the prior art and providing the repeated pressure maintaining, separating and transferring device with no pollution of overlying water and low disturbance of sediment.
In order to solve the technical problems, the invention adopts the following solutions:
the device for separating and transferring the overlying water without pollution and low sediment disturbance for pressure maintaining for many times comprises: the device comprises a sampling mechanism, a pushing cabin mechanism, a pressurizing mechanism and a sediment transferring mechanism;
the sampling mechanism comprises a pressure maintaining cylinder, a sampling cylinder and a sampling cylinder ball valve; the sampling tube is sleeved in the pressure maintaining tube, the ball valve of the sampling tube is positioned at the lower end of the pressure maintaining tube, an upper water-covering transfer interface is arranged on an end cover at the top of the pressure maintaining tube, and a petal structure is arranged at the bottom of the sampling tube;
the pushing cabin mechanism comprises a hollow tubular pushing cabin, and a pushing cabin ball valve is arranged at the upper end of the pushing cabin mechanism and can be connected with the sampling tube ball valve through a hoop; the lower end part of the pushing cabin is provided with a pushing cabin end cover, and the pushing cabin end cover is provided with an interface for connecting a hydraulic pipe; a secondary sampling tube is arranged in the pushing cabin, the upper end part of the secondary sampling tube is close to the ball valve of the pushing cabin, and the lower end part of the secondary sampling tube is connected with the pushing rod through a tripping mechanism; the pushing rod piston at the tail end of the pushing rod is close to the pushing cabin end cover and forms a rotating mechanism together with the pushing rod base;
the pressurizing mechanism comprises a cylinder body, a piston and a push rod; the push rod is connected with the end face of the piston, the piston divides the cylinder into two chambers, and each chamber is provided with an interface for connecting a hydraulic pipe;
the sediment transfer mechanism comprises a shearing ball valve with a three-way structure, and openings are arranged at the left side, the right side and the lower end part of the shearing ball valve; openings on the left side and the right side of the shearing ball valve are respectively connected to the sediment culture kettle and the push rod cabin body through hoops, and the lower end part of the shearing ball valve can be connected with the push cabin ball valve through the hoops; the shearing ball valve or the sediment culture kettle is provided with a transfer structure interface.
As a preferable scheme, the pushing cabin mechanism also comprises a rotation stopping rod structure, wherein the rotation stopping rod structure comprises a rotation stopping screw rod fixed on the side wall of the pushing cabin, a rotation stopping shaft is arranged in the rotation stopping screw rod in a penetrating manner, and a rotation stopping screw sleeve is sleeved outside the rotation stopping screw rod; an axial rotation stopping groove is formed in the outer side wall of the secondary sampling tube, and the inner side end part of the rotation stopping shaft can be embedded into the rotation stopping groove; the rotation stopping screw sleeve is in threaded fit with the rotation stopping screw rod, the outer end part of the rotation stopping shaft is fixedly connected with the top end of the rotation stopping screw sleeve, and the rotation stopping screw sleeve can move relative to the rotation stopping screw rod under the driving of the rotation stopping screw sleeve.
As a preferable scheme, the tripping mechanism comprises a male buckle and a female buckle which are matched with each other and are movably installed, and can realize locking and releasing between the tripping mechanism and the secondary sampling tube when the push rod rotates; the upper end part of the pushing rod is provided with a male buckle, and the lower end part of the secondary sampling tube is provided with a female buckle; the rotating mechanism comprises a push rod piston connected with the push rod and a push rod base provided with a counter bore; the tail end of the pushing rod piston is sleeved in the counter bore, and a protruding sliding shaft is arranged on the outer side of the pushing rod piston; the side wall of the counter bore is provided with a wedge-shaped opening, and the arc-shaped bevel edge of the wedge-shaped opening is used as a sliding rail matched with the sliding shaft.
As a preferable scheme, the pressurizing mechanism is a manual pressurizing pump, a push rod of the pressurizing mechanism penetrates through a hollow screw rod, a threaded sleeve is sleeved on the outer side of the screw rod, and the two are in threaded fit; the outer end of the push rod is fixedly connected with the top end of the screw sleeve, the push rod can be driven by the screw sleeve to move relative to the screw rod, and the screw rod is fixedly arranged on the end cover of the cylinder body.
As a preferable scheme, the sediment culture kettle is a pressure-resistant container with an open end, and the open end is connected with a shearing ball valve and is sealed by an O-shaped sealing ring; a ball valve of the culture kettle is arranged on the inner side of the opening end of the sediment culture kettle.
As a preferable scheme, the shearing ball valve and the pushing cabin ball valve are connected through a hoop and are sealed by an O-shaped sealing ring; the shearing ball valve is connected with the push rod cabin body through a hoop and is sealed by an O-shaped sealing ring.
As a preferable scheme, a push rod is arranged in the push rod cabin body, and the radial dimension of the push rod is in clearance fit with a valve core through hole of the shearing ball valve; the end part of the push rod is provided with a push rod piston, and the end part of the push rod cabin body outside the piston is provided with an interface for connecting a hydraulic pipe.
As a preferable scheme, the pressurizing mechanism and the sediment culture kettle are respectively provided with at least 2 sets.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention can simultaneously realize pressure maintaining transfer of the overlying water and the sediment, and can ensure that the overlying water is not polluted by other liquids (such as added seawater, deionized water and the like) after transfer.
(2) The sediment is transferred out of the sampler through the secondary sampling tube instead of being transferred out like liquid after being stirred and diluted as in the prior art, so that the integrity of the sediment sample and the activity of microorganisms can be better ensured.
(3) The secondary sampling pipe and the pushing rod in the pushing cabin are movably connected, and connection and release between the secondary sampling pipe and the pushing rod can be realized through cooperation between the rotation stopping mechanism and the rotating mechanism. Thereby, the sediment can be obtained from the sampler by the secondary sampling tube and then transferred from the secondary sampling tube to the culture kettle.
(4) The invention can use a plurality of culture kettles for sampling. Each culture kettle is provided with an independent ball valve switch. The repeated transfer of sediment samples is realized through action coordination among the ball valve of the culture kettle, the shearing ball valve and the pushing rod of the culture kettle, so that the utilization rate of sediment is further improved.
Drawings
FIG. 1 is a schematic view of the external overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a push cabin and a sampler;
FIG. 3 is a schematic cross-sectional view of a manual booster pump;
FIG. 4 is a schematic cross-sectional view of a deposition transfer monolith;
FIG. 5 is a schematic illustration of the construction of a push rod;
FIG. 6 is a schematic illustration of a detent lever structure;
FIG. 7 is a schematic illustration of the box installation of the end of a sub-sampling tube.
In the figure: 1, a water-coating transfer interface; 2, a pressure maintaining cylinder; 3, a sampling tube ball valve; 4 pushing cabin ball valves; 5 hoops; 6, a rotation stopping mechanism; 7, pushing the cabin; 8 pushing the cabin end cover; 9, a manual booster pump; 10 secondary sampling tubes; 11 pushing the rod; 12 pushing the cabin interface; 13 a rotation mechanism; 14 a tripping mechanism; 15 sampling tube; 16 push rods; 17 a first interface; a second interface 18; 19 barrels; a 20-piston; a 21 barrel end cap; a 22 screw; 23 screw sleeves; 24 sediment culture kettles; 25 culture kettle ball valve; 26 transfer fabric interface; 27 pushing rod; 28, a push rod cabin; 29 push rod cabin interface; 30 shearing a ball valve; 31 pin thread; 32 female buttons; 34 sliding shafts; 35 pushing rod base; 36, stopping the rotating shaft; 37 rotation stopping screw rods; 38, a rotation stopping screw sleeve; 39 pushing the rod piston; 50 a rotation stopping groove; a petal structure 51.
Detailed Description
The following examples will provide those skilled in the art with a more complete understanding of the present invention and are not intended to limit the invention in any way.
The reference numerals used for the components in this application, such as "first," "second," etc., are used merely to distinguish between the described objects, and do not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
The following describes the specific working steps of the invention with reference to the accompanying drawings:
as shown in the figure, the device for separating and transferring the overlying water without pollution and with low sediment disturbance for multiple pressure maintaining comprises: the device comprises a sampling mechanism, a pushing cabin mechanism, a pressurizing mechanism and a sediment transferring mechanism; wherein,
the sampling mechanism comprises a pressure maintaining cylinder 2, a sampling cylinder 15 and a sampling cylinder ball valve 3; the sampling tube 15 is sleeved in the pressure maintaining tube 2, the sampling tube ball valve 3 is positioned at the lower end of the pressure maintaining tube 2, an upper water transfer interface 1 is arranged on an end cover at the top of the pressure maintaining tube, and a petal structure 51 for preventing sediment from falling off is arranged at the bottom of the sampling tube (see Chinese patent application for a deep-seated sediment undisturbed pressure maintaining sampling device, application number 2018114545882).
The pushing cabin mechanism comprises a hollow tubular pushing cabin 7, the upper end of which is provided with a pushing cabin ball valve 4 which can be connected with the sampling tube ball valve 3 through a hoop; a pushing cabin end cover 8 is arranged at the lower end part of the pushing cabin 7, and a pushing cabin interface 12 connected with a hydraulic pipe is arranged on the pushing cabin end cover 8; a subsampling tube 10 is arranged in the pushing cabin 7, the upper end part of the subsampling tube is close to the ball valve 4 of the pushing cabin, and the lower end part of the subsampling tube is connected with the pushing rod 11 through a tripping mechanism 14.
The pushing rod 11 is detachably and movably connected with the secondary sampling tube 10 through a tripping mechanism, and the tripping mechanism comprises a male buckle and a female buckle which are matched with each other and are movably installed, so that locking and loosening between the pushing rod 11 and the secondary sampling tube 10 can be realized when the pushing rod 11 rotates. As shown in fig. 5 and 7, a pin 31 is provided at the upper end of the push rod 11, and a box 32 is provided at the lower end of the sub-sampling tube 10. The right side in fig. 7 shows the structure of the female buckle 32 in the left assembled structure under another view, wherein the inner edge of the annular main body of the female buckle 32 is provided with a clamping groove and a notch, and the side edge of the male buckle 31 is provided with a protruding part matched with the clamping groove.
The pushing rod piston 39 at the end of the pushing rod 11 is close to the pushing cabin end cover 8 and forms the rotating mechanism 13 together with the pushing rod base 35. The rotating mechanism 13 comprises a push rod piston 39 connected with the push rod 11 and a push rod base 35 provided with a counter bore; the tail end of the push rod piston 39 is sleeved in the counter bore, and the outer side of the push rod piston is provided with a protruding sliding shaft 34; the counterbore side walls are provided with wedge-shaped openings with arcuate beveled edges serving as slide rails for engagement with the slide shaft 34.
The pushing cabin mechanism also comprises a rotation stopping rod structure, a rotation stopping screw rod 37, a rotation stopping shaft 36 and a rotation stopping screw sleeve 38, wherein the rotation stopping screw rod 37 is fixed on the side wall of the pushing cabin 7, the rotation stopping shaft 36 is arranged in the pushing cabin in a penetrating mode, and the rotation stopping screw sleeve 38 is sleeved outside the pushing cabin; an axial rotation stopping groove 50 is formed in the outer side wall of the secondary sampling tube 10, and the inner side end part of the rotation stopping shaft 36 can be embedded in the rotation stopping groove 50; the anti-rotation screw sleeve 28 is in threaded fit with the anti-rotation screw rod 37, the outer end part of the anti-rotation shaft 36 is fixedly connected with the top end of the anti-rotation screw sleeve 38, and the anti-rotation screw sleeve can be driven by the anti-rotation screw sleeve 38 to displace relative to the anti-rotation screw rod 37.
The pressurizing mechanism has at least 2 sets. The pressurizing mechanism comprises a cylinder 19, a piston 20 and a push rod 16; the push rod 16 is connected with the end face of the piston 20, the piston 20 divides the cylinder 19 into two chambers, and each chamber is provided with an interface for connecting a hydraulic pipe; the pressurizing mechanism is a manual pressurizing pump 9, a push rod 16 of the pressurizing mechanism penetrates through a hollow screw rod 22, a threaded sleeve 23 is sleeved on the outer side of the screw rod 22, and the two are in threaded fit; the outer end of the push rod 16 is fixedly connected with the top end of the screw sleeve 23, can be driven by the screw sleeve 23 to displace relative to the screw rod 22, and the screw rod 22 is fixedly arranged on the end cover of the cylinder body. The pressurizing mechanism may alternatively be a motor drive (e.g., a stepper motor) that rotates in a forward and reverse direction, where the pushrod 16 is coupled to the motor output via a coupling mechanism, and the travel distance of the pushrod 16 and piston 20 is adjusted by controlling the motor run time.
The sediment transfer mechanism comprises a shear ball valve 30 with a three-way structure, and openings are arranged on the left and right sides and the lower end part of the shear ball valve; the openings at the left and right sides of the shear ball valve 30 are respectively connected to the sediment culture kettle 24 and the push rod cabin 28 through hoops, and the lower end part of the shear ball valve can be connected with the push cabin ball valve 4 through hoops; a transfer structure interface 26 is provided on the shear ball valve 30 or sediment tank 24. The shearing ball valve 30 and the pushing cabin ball valve 4 are connected through a hoop and are sealed by an O-shaped sealing ring; the shear ball valve 30 is connected with the push rod cabin 28 through a hoop and is sealed by an O-shaped sealing ring. There are at least 2 sets of sediment culture tanks 24. Sediment incubator 24 is a pressure vessel having an open end that is sealed by an O-ring seal coupled to shear ball valve 30; a culture kettle ball valve 25 is arranged on the inner side of the opening end of the sediment culture kettle 24. A push rod 27 is arranged in the push rod cabin 28, and the radial size of the push rod 27 is smaller than a valve core through hole (or clearance fit) of the shear ball valve 30; the end of the push rod 27 is provided with a push rod piston 33, and the end of the push rod cabin 28 outside the piston is provided with an interface for connecting a hydraulic pipe.
The culture kettle ball valve 25 is used for independently switching the sediment culture kettle 24, the valve core of the shearing ball valve 30 can shear columnar sediment from the subsampling tube 10, and the push rod 27 in the pushing cabin 28 can enter the valve core of the shearing ball valve 30 to prevent the sediment from adhering in the shearing ball valve 30; the sediment can be transferred for many times through the action coordination of the pressurizing mechanism, the shearing ball valve 30, the push rod 27 and the culture kettle ball valve 25. The axial movement of the pushing rod 11 is achieved by a pressurizing mechanism, which transfers the overlying water and sediment. The release separation between the pushing rod and the secondary sampling tube is realized through the rotating mechanisms 13 and the release mechanisms 14 at the two ends of the pushing rod 11, and the sediment in the secondary sampling tube 10 is further transferred into the sediment culture kettle 24 for a plurality of times.
A more detailed description is as follows:
as shown in figure 1, the device for separating and transferring sediment and overlying water under pressure is mainly composed of a sampling mechanism, a pushing cabin mechanism, a pressurizing mechanism and a sediment transferring mechanism.
The sampling mechanism comprises a pressure maintaining cylinder 2, a sampling cylinder 15 and a sampling cylinder ball valve 3, wherein the sampling cylinder ball valve 3 is positioned below the sampling cylinder 15 to play a role in pressure maintaining and sealing. The pushing cabin ball valve 4 of the pushing cabin 7 is connected with the sampling tube ball valve 3 through the anchor ear 5, a first interface 17 on the manual booster pump 9 is connected with the overlying water transfer interface 1 through a hydraulic pipe, and a second interface 18 is connected with an interface on the end cover 8 of the pushing cabin through a hydraulic pipe.
The specific implementation mode and the use mode of the sampling mechanism are not particularly required, and the sampling equipment which can realize pressure-maintaining sampling of sediment and overlying water under the condition of pressure keeping can be used for the invention. The invention has the requirements that a sampling tube ball valve 3 and an overlying water transfer interface 1 for butt joint are arranged on a sampling mechanism.
As shown in fig. 2, which is a schematic overall cross-sectional view of the push cabin 7, the push cabin structure comprises a sub-sampling tube 10, a push rod 11, a push cabin interface 12, a push rod rotation mechanism 13 and a push rod trip structure 14. The push rod piston 39 on the push rod 11 serves to divide the push cabin 7 into two cabins. The pushing cabin interface 12 on the pushing cabin end cover 8 is connected with the manual booster pump 9 through a hydraulic pipe.
The sub-sampling tube 10 and the pushing rod 11 are movably connected, and connection and disconnection of the sub-sampling tube 10 and the pushing rod 11 can be realized through cooperation of the rotating mechanism 13 and the tripping mechanism 14.
As shown in fig. 3, the whole cross-section schematic diagram of the manual booster pump is shown, the push rod 16 of the manual booster pump 9 is in sealing fit with the screw rod 22 through an O-shaped sealing ring, the push rod 16 and the screw rod 22 can move axially relatively, and the screw rod 22 and the end cover 21 are connected through threads and are sealed radially through the O-shaped sealing ring; the piston 20 and the cylinder 19 are sealed by an O-shaped ring and divide the manual booster pump 9 into two chambers, and the piston 20 is connected with the push rod 16 by threads; the screw 22 and the screw sleeve 23 are in trapezoid transmission threaded connection, relative axial movement between the screw 22 and the screw sleeve 23 can be realized by rotating the screw sleeve 23, and the screw sleeve 23 further pushes the push rod 16 and the piston 20 to move.
As shown in FIG. 4, which is a schematic cross-sectional view of the overall sediment transfer assembly, the open end of sediment tank 24 is connected to shear ball valve 30 by an O-ring sealed anchor; the shear ball valve 30 is connected with the push rod cabin 28 of the culture kettle through an anchor ear sealed by an O-shaped ring; the shear ball valve 30 is connected with the sampling tube ball valve 3 through an anchor ear sealed by an O-shaped ring; the push rod cabin interface 29 is connected with the second manual booster pump 9, and the working principle of each manual booster pump is the same, so that the description is omitted.
As shown in fig. 5, the push rod 11 is schematically structured. The left end of the push rod 11 is a pin 31, and the right side is a rotation mechanism 13. The lower end of the sub-sampling tube 10 is provided with a female buckle 32 matched with the male buckle 31, and the two are nested and installed in a relatively rotatable manner, so that the locking and releasing of the two can be realized when the pushing rod 11 rotates.
The specific connection and disconnection principle is described as follows: when the pushing rod 11 moves close to the sliding rail, the sliding shaft 34 contacts the sliding rail to generate rotating torque to force the pushing rod 11 to rotate 90 degrees. Because the male buckle 31 and the pushing rod 11 are integrated, the female buckle 32 is fixedly connected with the end part of the secondary sampling tube 10, and the secondary sampling tube 10 is limited in rotation by the rotation stopping shaft 36; therefore, when the push rod 11 rotates 90 degrees, the male buckle 31 is driven to rotate 90 degrees, and the female buckle 32 cannot rotate because the secondary sampling tube 10 is limited to rotate, so that the male buckle 31 is separated from the sliding groove of the female buckle 32 in a rotating and dislocation manner. At this time, the pushing rod piston 39 can further make the end of the pushing rod 11 pass through the inner through hole of the female buckle 31 under the pressure from the manual booster pump 9, so that the male buckle 31 and the pushing rod 11 move in the sub-sampling tube 10 without moving together with the sub-sampling tube 10.
As shown in fig. 6, the function of the rotation mechanism 6 is to prevent the push rod 11 from rotating to cause the sub-sampling tube 10 and the push rod button 32 to be rotated during rotation, thereby causing a trip failure. The device mainly comprises a rotation stopping shaft 36, a rotation stopping screw rod 37 and a rotation stopping screw sleeve 38, wherein the rotation stopping screw sleeve 38 is in threaded connection with the pushing cabin 7 and is radially sealed by an O-shaped sealing ring; the rotation stopping shaft 36 and the rotation stopping screw rod 37 are radially sealed by an O-shaped sealing ring and can axially and relatively move; the rotation stopping screw rod 37 is connected with the rotation stopping screw sleeve 38 through trapezoidal transmission threads, and the rotation stopping screw sleeve 38 can be rotated to drive the rotation stopping shaft 36 to axially displace and insert the rotation stopping shaft into the rotation stopping groove 50 of the sub-sampling tube 10 to provide rotation restriction.
The working process of the invention is as follows:
(1) Confirm that the sampling mechanism has completed successful sampling of the overlying water and sediment under the hold-down condition.
Before the transfer operation starts, the transfer device is vertically placed, and deionized water is pre-filled into the pushing cabin 7 through the ball valve 4 of the pushing cabin (so that the sub-sampling pipe 10 is filled with the deionized water). The sampler 2 is then lowered on the upper push pod 7, and the push pod ball valve 4 is sealingly connected to the underside of the sampler barrel ball valve 3 by a hoop. The tank body at the lower part of the piston 20 in the manual booster pump 9 is pre-filled with deionized water, the second port 18 is connected to the pushing tank port 12 through a hydraulic pipe, and the first port 17 is connected to the overlying water transfer port 1 of the sampling mechanism through a hydraulic pipe.
The sampling tube ball valve 3 and the pushing cabin ball valve 4 are opened. The rotation stop screw sleeve 38 of the rotation stop mechanism 6 is manually rotated to retract the rotation stop shaft 36 into the rotation stop screw rod 37, thereby releasing the restraint on the sub-sampling tube 10. At this time, the piston 20 in the manual booster pump 9 is at the uppermost position, the piston 20 is moved downwards by rotating the screw sleeve 23, and deionized water below the piston 20 is pressed into the chamber at the lower part of the push rod piston 39 through the second interface 18 and the push chamber interface 12. At this time, the push rod 11 and the sub-sampling tube 10 are in a locked state, so that the push rod 11 and the sub-sampling tube 10 are operated together. The pushing rod piston 39 drives the pushing rod 11 and the secondary sampling tube 10 to synchronously move upwards, and the overlying water in the sampling tube 15 is transferred into the upper cavity of the piston 20 through the overlying water connector 1 and the first connector 17 under the action of the pressure below, so that the pressure maintaining transfer of the overlying water is completed. Based on structural design considerations, the subsampling tube 10 does not interfere with the petal structure 51 at the bottom of the sampling tube 15 (the petal structure 51 is not stretched) when the overlying water transfer is completed, so that the sediment is restrained on the upper side of the petal structure 51.
(2) After the transfer of the overlying water is completed, the overlying water port 1 and the first port 17 are closed. And a manual booster pump 9 is additionally taken, deionized water is pre-filled into a cabin body at the lower part of the piston 20 to enable the piston 20 to move to the uppermost position, the second connector 18 is connected with the pushing cabin connector 12 through a hydraulic pipe, and the first connector 17 is connected with the overlying water connector 1. The piston 20 is moved downward by rotating the screw sleeve 23 and deionized water thereunder is forced into the chamber below the push rod piston 39. The pushing rod 11 moves the subsampling tube 10 further upwards and eventually passes through and expands the petal structure 51 into the sampling tube 15 into a nested relationship.
After the sub-sampling tube 10 is expanded to the petal structure 51, the sediment gradually falls into the deionized water in the sub-sampling tube 10 under the dead weight due to the softer sediment in the methane blowby area and the larger specific gravity than the deionized water, and the deionized water originally located under the sediment passes through the sediment and is subjected to 'position exchange'. In the process that the pushing rod 11 drives the secondary sampling pipe 10 to move upwards, deionized water gradually flows out of the overlying water interface 1 and enters a cabin above the piston 20 of the manual booster pump 9 to be recovered. In doing so, the manual booster pump 9 is controlled to slowly advance the deposit and deionized water for a time sufficient to achieve adequate blending and positional exchange.
(3) The piston 20 is moved upward by rotating the screw sleeve 23 in the opposite direction, so that the deionized water recovered in the upper chamber of the piston 20 is pressed into the pushing chamber 7 again for pushing the sediment and the mechanism below the sediment downward.
At this time, the pushing rod 11 drives the secondary sampling tube 10 to recover. The rotation stop screw 38 of the rotation stop mechanism 6 is rotated to insert the rotation stop shaft 36 into the rotation stop groove 50 of the sub-sampling tube 10, thereby generating a rotation-restricting motion of the sub-sampling tube 10. In the recovery process of the push rod 11, the sliding shaft 34 is in contact with the sliding rail 35 and generates a rotation torque to force the push rod 11 to rotate, so that the slide groove of the female buckle 32 of the male buckle 31 is separated from the push rod 11 in a rotating way, and the tripping action between the push rod 11 and the secondary sampling tube 10 is further completed. After the sub-sampling tube 10 is completely recovered to the pushing cabin 7, the pushing cabin ball valve 4 is closed, and the sampler 2 is taken down. At this point, all of the sediment enters the sub-sampling pipe 10.
(4) Multiple transfers of sediment to the culture tank 24 were performed:
as shown in FIG. 4, a sediment incubator 24, which is pre-filled with deionized water, is connected to an incubator ball valve 25. Taking two manual booster pumps 9 filled with deionized water, wherein a first interface 17 of one manual booster pump is connected with a transfer structure interface 26, and a second interface 18 is connected with a pushing cabin interface 12; the second port 18 of the other manual booster pump 9 is connected to a pushrod capsule port 29.
The push cabin ball valve 4 and the incubator ball valve 25 are opened. The piston 20 of the first (left in the figure) manual booster pump 9 is moved downwards by rotating the screw sleeve 23, pressing the deionization therebelow under into the push rod piston 39. The push rod 11 which completes tripping moves upwards, the push rod 11 passes through the female buckle 31 and then enters the sub-sampling tube 10, and sediment in the sub-sampling tube 10 is pushed upwards into the shear ball valve 30. The sediment is then sheared by rotating the shear ball valve 30 and the sediment is transferred into the sediment tank 24 by actuating the pushrod 27 with the second manual booster pump 9. Excess deionized water above the sediment is transferred to the chamber above the piston 20 of the first manual booster pump 9 via transfer structure interface 26. By closing the incubator ball valve 25 and replacing the new sediment incubator 24, multiple transfers of sediment can be achieved with the cooperation of the actions of the two manual booster pumps 9, push rod 11, push rod 27 and shear ball valve 30.
The device can complete transfer work without using equipment supplied by other forms of energy sources such as external power and the like, and is suitable for pressure maintaining transfer work of samples under special offshore conditions. The influence of deionized water used for pressurization on the purity of the overlying water is avoided in the process of transferring the overlying water, and the original state of the overlying water can be ensured. The device can realize the quick connection and release between the push rod and the secondary sampling tube, not only can ensure the acquisition of sediment from the sampler, but also can realize the repeated transfer of sediment in the subsequent secondary sampling tube. The transfer of the sediment is by sub-sampling of the sampling tube, and the in-situ delamination of the sediment can be ensured under the condition of ensuring high transfer ratio (the volume of the transfer accounts for the volume fraction of the sample). The sediment culture kettles are provided with a plurality of sediment culture kettles, and the sediment culture kettles can be intermittently matched with push rods, shearing ball valves and culture kettle ball valves to realize the repeated transfer of sediment, so that the utilization rate of samples is further improved.
Finally, it should be noted that the above list is only specific embodiments of the present invention. Obviously, the invention is not limited to the above embodiments, but many variations are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present invention.
Claims (7)
1. The utility model provides a cover water pollution-free and sediment low disturbance many times pressurize separation transfer device which characterized in that includes: the device comprises a sampling mechanism, a pushing cabin mechanism, a pressurizing mechanism and a sediment transferring mechanism;
the sampling mechanism comprises a pressure maintaining cylinder, a sampling cylinder and a sampling cylinder ball valve; the sampling tube is sleeved in the pressure maintaining tube, the ball valve of the sampling tube is positioned at the lower end of the pressure maintaining tube, an upper water-covering transfer interface is arranged on an end cover at the top of the pressure maintaining tube, and a petal structure is arranged at the bottom of the sampling tube;
the pushing cabin mechanism comprises a hollow tubular pushing cabin, and a pushing cabin ball valve is arranged at the upper end of the pushing cabin mechanism and can be connected with the sampling tube ball valve through a hoop; the lower end part of the pushing cabin is provided with a pushing cabin end cover, and the pushing cabin end cover is provided with an interface for connecting a hydraulic pipe; a secondary sampling tube is arranged in the pushing cabin, the upper end part of the secondary sampling tube is close to the ball valve of the pushing cabin, and the lower end part of the secondary sampling tube is connected with the pushing rod through a tripping mechanism; the pushing rod piston at the tail end of the pushing rod is close to the pushing cabin end cover and forms a rotating mechanism together with the pushing rod base;
the pushing cabin mechanism also comprises a rotation stopping rod structure, and comprises a rotation stopping screw rod fixed on the side wall of the pushing cabin, wherein the rotation stopping screw rod is internally penetrated with a rotation stopping shaft, and the rotation stopping screw sleeve is sleeved outside the rotation stopping screw rod; an axial rotation stopping groove is formed in the outer side wall of the secondary sampling tube, and the inner side end part of the rotation stopping shaft can be embedded into the rotation stopping groove; the anti-rotation screw sleeve is in threaded fit with the anti-rotation screw rod, the outer end part of the anti-rotation shaft is fixedly connected with the top end of the anti-rotation screw sleeve, and the anti-rotation screw sleeve can move relative to the anti-rotation screw rod under the driving of the anti-rotation screw sleeve;
the pressurizing mechanism comprises a cylinder body, a piston and a push rod; the push rod is connected with the end face of the piston, the piston divides the cylinder into two chambers, and each chamber is provided with an interface for connecting a hydraulic pipe;
the sediment transfer mechanism comprises a shearing ball valve with a three-way structure, and openings are arranged at the left side, the right side and the lower end part of the shearing ball valve; openings on the left side and the right side of the shearing ball valve are respectively connected to the sediment culture kettle and the push rod cabin body through hoops, and the lower end part of the shearing ball valve can be connected with the push cabin ball valve through the hoops; the shearing ball valve or the sediment culture kettle is provided with a transfer structure interface.
2. The device according to claim 1, wherein the tripping mechanism comprises a male buckle and a female buckle which are matched with each other and are movably installed, and the locking and the releasing between the tripping mechanism and the secondary sampling tube can be realized when the pushing rod rotates; a male buckle is arranged at the upper end part of the pushing rod, and a female buckle is arranged at the lower end part of the secondary sampling tube; the rotating mechanism comprises a push rod piston connected with the push rod and a push rod base provided with a counter bore; the tail end of the pushing rod piston is sleeved in the counter bore, and a protruding sliding shaft is arranged on the outer side of the pushing rod piston; the side wall of the counter bore is provided with a wedge-shaped opening, and the arc-shaped bevel edge of the wedge-shaped opening is used as a sliding rail matched with the sliding shaft.
3. The device according to claim 1, wherein the pressurizing mechanism is a manual pressurizing pump, a push rod of the pressurizing mechanism penetrates through a hollow screw rod, a screw sleeve is sleeved on the outer side of the screw rod, and the screw sleeve and the screw rod are in threaded fit; the outer end of the push rod is fixedly connected with the top end of the screw sleeve, the push rod can be driven by the screw sleeve to move relative to the screw rod, and the screw rod is fixedly arranged on the end cover of the cylinder body.
4. The apparatus of claim 1, wherein the sediment culture vessel is a pressure vessel having an open end, the open end being sealed by an O-ring by connection to a shear ball valve; a ball valve of the culture kettle is arranged on the inner side of the opening end of the sediment culture kettle.
5. The device of claim 1, wherein the shear ball valve and the push cabin ball valve are connected by a hoop and are sealed by an O-ring; the shearing ball valve is connected with the push rod cabin body through a hoop and is sealed by an O-shaped sealing ring.
6. The device of claim 1, wherein a push rod is arranged in the push rod cabin, and the radial dimension of the push rod is in clearance fit with a valve core through hole of the shear ball valve; the end part of the push rod is provided with a push rod piston, and the end part of the push rod cabin body outside the piston is provided with an interface for connecting a hydraulic pipe.
7. The apparatus of claim 1, wherein the pressurizing mechanism and the sediment tank are each at least 2 sets.
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