CN205577920U - Deep -sea sediment held coring device suitable for seabed rig - Google Patents

Deep -sea sediment held coring device suitable for seabed rig Download PDF

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Publication number
CN205577920U
CN205577920U CN201520849125.1U CN201520849125U CN205577920U CN 205577920 U CN205577920 U CN 205577920U CN 201520849125 U CN201520849125 U CN 201520849125U CN 205577920 U CN205577920 U CN 205577920U
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China
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rig
suction
seabed
pumping piston
cylinder
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CN201520849125.1U
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万步炎
金永平
黄筱军
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Hunan University of Science and Technology
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Hunan University of Science and Technology
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Abstract

The utility model discloses a deep -sea sediment held coring device suitable for seabed rig, its characterized in that: it adds a suction piston cylinder on current seabed rig basis, suction piston cylinder fixed mounting is inside the rig of current seabed, including the suction cylinder, suction piston and the piston rod subassembly of suit in the suction cylinder, the piston end cover, it is sealed through the sealing washer between suction piston and the suction cylinder inner wall, suction piston rod one end and suction piston fixed connection, the other end creeps into the unit head with current seabed rig or its advancing mechanism is connected, creep into unit head advancing mechanism linkage drive by current seabed rig, just can make the suction piston cylinder through creeping into the unit head delivery pipe from the water yield of drilling rod inner chamber extraction with get into the core drill utensil because of the deposit equal basically to the displacement of drilling rod inner chamber through rationally selecing suction piston cylinder internal diameter, it gets the core to form the suction of piston negative pressure, thereby it gets the core rate to increase substantially the deposit of seabed rig, and reduce the disturbance to sediment samples.

Description

A kind of bottom sediment coring device being applicable to seabed rig
Technical field
This utility model relates to a kind of deposit coring device, especially relates to a kind of bottom sediment coring device being applicable to seabed rig.
Background technology
The technical field of a new developing of countries in the world Future strategy is had become as along with the exploitation of deep seafloor resource.Before seabed resources large-scale development/exploitation, it is necessary to also must carry out exploration sampling, to obtain this regional undersea distribution of resource situation, quality, buried depth etc. information by/production zone to be developed to this seabed.When seabed resources are mainly soft Distribution of Surface Sediment, directly use the coring method/technology of existing seabed rig that bottom sediment is carried out coring operation, owing to the sea water of core bit inner sealing cavity cannot be discharged in time, deposit is made to become extremely difficult in entering core bit, cause core-taking rate the lowest, affected by core bit inner sealing cavity hydraulic pressure simultaneously, the sediment sample got suffers from bigger disturbance and even destroys, and so will have a strong impact on sediment sample to seabed resources at the integrity of Different Strata record.
Utility model content
In order to overcome above-mentioned existing seabed rig core-taking rate in bottom sediment location of the coring procedure on the low side and deposit is by the deficiency of relatively large disturbances, this utility model provides the deposit core-taking rate of a kind of increased substantially seabed rig being applicable to seabed rig and reduces the bottom sediment coring device to sediment sample disturbance.
nullThe technical solution adopted in the utility model is: it sets up a pumping piston cylinder on the basis of the rig of existing seabed,Described pumping piston cylinder is fixedly installed in inside the rig of existing seabed,Including suction cylinder barrel、It is sleeved on the pumping piston in suction cylinder barrel and piston rod assembly、Piston end cap,Sealed by sealing ring between pumping piston and suction inner wall of cylinder,Pumping piston bar one end is fixing with pumping piston to be connected,The other end creeps into unit head with existing seabed rig or its propulsive mechanism is connected,Unit head propulsive mechanism linkage driving is crept into by existing seabed rig,Or crept into the direct related driving of unit head by existing seabed rig,Unlike the rig working method of existing seabed,It is not to connect flush water pump that this seabed rig creeps into the other end of unit head feed pipe,But be connected with one end rodless cavity or the rod chamber of described pumping piston cylinder,Described pumping piston cylinder does not connects the other end rod chamber of described feed pipe or rodless cavity is then direct and external world's sea water connects emptying,Owing to the piston of described pumping piston cylinder is crept into unit head or the related driving of its propulsive mechanism by existing seabed rig,Existing seabed rig is made to creep into unit head while pushing down on existing seabed rig core bit press-in deposit coring,Described pumping piston cylinder creeps into unit head feed pipe by existing seabed rig and draws water from drilling rod and core bit inner chamber,Thus realize piston type negative pressure-pumping coring,Described feed pipe specifically accesses the rodless cavity of described pumping piston cylinder or rod chamber then depends on itself and the described linked manner creeping into unit head or its propulsive mechanism,Principle be when described creep into unit head promote core bit press-in deposit carry out coring operation time,Described pumping piston cylinder should be drawn water in drilling rod and core bit by feed pipe,For reducing the disturbance to coring sample as far as possible,Described pumping piston cylinder should be made of substantially equal to the amount of drilling rod inner chamber draining with because of deposit entrance core bit from the water yield of drilling rod and the extraction of core bit inner chamber by pumping piston cylinder bore described in Rational choice.
The above-mentioned bottom sediment coring device be applicable to seabed rig, described feed pipe is not to be directly accessed described pumping piston cylinder, but is connected with described pumping piston cylinder by a multidirectional permutator valve.The another port of described multidirectional permutator valve is connected with seabed rig flush water pump, the effect of described multidirectional permutator valve is the connection between switching feed pipe and pumping piston cylinder and flush water pump, when feed pipe realizes deposit press-in suction coring with pumping piston cylinder when multidirectional permutator valve is connected, flush water pump can be exported outwardly sea water simultaneously open;Rotary drilling coring is rinsed when feed pipe realizes common direct circulation with flush water pump when multidirectional permutator valve is connected, simultaneously that pumping piston cylinder pump orifice outwardly sea water is open.
The above-mentioned bottom sediment coring device be applicable to seabed rig, described pumping piston cylinder water pump replaces, and when creeping into unit head and promoting core bit press-in deposit to carry out coring operation, utilizes water pump to pass through feed pipe and draws water in drilling rod and core bit.For reducing the disturbance to coring sample as far as possible, should rationally select water pump size, conservative control water pump start-stop time and pump-out simultaneously, the water yield making water pump extract from drilling rod and core bit inner chamber is of substantially equal to the amount of drilling rod inner chamber draining with because of deposit entrance core bit.
The above-mentioned bottom sediment coring device be applicable to seabed rig, described core bit is single tube drilling tool, two-tube drilling tool or three pipe drilling tools that existing seabed rig is conventional, or core plugging notifying mechanism of rope core drilling, when using that look ahead system is two-tube or during three pipe drilling tools, annular gap between coring inner tube and drilling tool outer tube carries out a certain degree of sealing preferably by certain mode, reduces suction coring effect to prevent extraneous sea water from entering core bit inner chamber from the annular gap between coring inner tube and drilling tool outer tube.
Compared with prior art, the utility model has the advantages that: while increasing substantially seabed rig deposit core-taking rate, realize bottom sediment is implemented low disturbance coring, simultaneously the pumping piston simple in construction in this utility model, reliability height.
Accompanying drawing explanation
Fig. 1 is embodiment 1 structural representation of the present utility model.
Fig. 2 is embodiment 2 structural representation of the present utility model.
Fig. 3 is embodiment 3 structural representation of the present utility model.
Fig. 4 is embodiment 4 structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is further described by embodiment.
nullA kind of embodiment of the present utility model is: a kind of bottom sediment coring device being applicable to seabed rig as shown in Figure 1,It sets up a pumping piston cylinder 1 on the basis of the rig of existing seabed,Described pumping piston cylinder 1 is fixedly installed in inside the rig of existing seabed,Including suction cylinder barrel 2、It is sleeved on the pumping piston 3 in suction cylinder barrel 2 and pumping piston bar 5、Sealed by sealing ring 4 between pumping piston 3 and suction cylinder barrel 2 inwall,Pumping piston bar 5 one end is fixing with pumping piston 3 to be connected,The other end is connected through the piston rod 9 of contiguous block 6 with existing seabed drilling machine advancing mechanism 10,Core bit 15 is directly connected to creeping into unit head 13 or is connected with creeping into unit head 13 by one or more drilling rod 14,Creep into unit head 13 to be fixed on sliding rail frame 8 by sliding support block 7,Sliding support block 7 is connected with the piston rod 9 of existing seabed drilling machine advancing mechanism 10,Creep into unit head 13 to be driven by propulsive mechanism 10 and move up and down along sliding rail frame 8,Drilling rod 16 and core bit 17 is driven to be pressed into deposit and realize coring;One end of feed pipe 11 is by rotation seal joint 12 through creeping into unit head 13 and drilling rod 14 and core bit 15 inner space, and the other end of feed pipe 11 is connected with the rodless cavity of pumping piston cylinder 1, and pumping piston cylinder 1 rod chamber then directly connects emptying with extraneous sea water.When bottom sediment is carried out coring operation, due to described pumping piston cylinder 1 piston 3 and creep into unit head 13 by propulsive mechanism 10 synchronize drive, make existing seabed rig creep into unit head 13 and pushing down on while existing seabed rig core bit 15 is pressed into deposit coring, the feed pipe 11 that described pumping piston cylinder 1 is crept on unit head 13 by existing seabed rig draws water from drilling rod 14 and core bit 15 inner chamber, thus realize piston type negative pressure-pumping coring, for reducing the disturbance to coring sample as far as possible, described pumping piston cylinder 1 should be made of substantially equal to the amount of drilling rod 14 inner chamber draining with because of deposit entrance core bit 15 from the water yield of drilling rod 14 and the extraction of core bit 15 inner chamber by the internal diameter of pumping piston cylinder 1 described in Rational choice.
Embodiment 2
As in figure 2 it is shown, similar to the structure of embodiment 1, difference is: described feed pipe 11 is not to be directly accessed pumping piston cylinder 1, but is connected with pumping piston cylinder 1 by permutator valve 17.The another port of permutator valve 17 is connected with seabed rig flush water pump 16, the effect of permutator valve 17 is the connection between switching feed pipe 11 and pumping piston cylinder 1 and flush water pump 16, realizes deposit press-in suction coring with pumping piston cylinder 1 when the converted controlled valve of feed pipe 11 17 is connected;Realize common direct circulation when the converted controlled valve of feed pipe 11 17 is connected with flush water pump 16 and rinse rotary drilling coring.
Embodiment 3
As shown in Figure 3, similar to the structure of embodiment 2, difference is, described pumping piston cylinder 1 can replace with water pump 18, when creep into unit head 13 promote core bit 15 be pressed into deposit carry out coring operation time, utilize water pump 18 to be drawn water in drilling rod 14 and core bit 15 by feed pipe 11.For reducing the disturbance to coring sample as far as possible, should rationally select water pump 18 size, conservative control water pump 18 start-stop time and pump-out simultaneously, the water yield making water pump 18 extract from drilling rod 14 and core bit 15 inner chamber is of substantially equal to the amount of drilling rod 14 inner chamber draining with because of deposit entrance core bit 15.
Embodiment 4
As shown in Figure 4, similar to the structure of embodiment 1, difference is: described core bit 15 is the two-tube drilling tool of look ahead system, in the core-pipe subassembly 21 that existing seabed rig is conventional is suspended on core bit 15 and stretch out core bit 15 bit central hole certain distance, one or more seal groove 19 is offered in the bit central hole of core bit 15, it is placed with sealing ring 20 in seal groove, is sealed by sealing ring 20 between coring inner tube and the core bit 15 of core-pipe subassembly 21.

Claims (4)

  1. null1. the bottom sediment coring device being applicable to seabed rig,It is characterized in that: it sets up a pumping piston cylinder on the basis of the rig of existing seabed,Described pumping piston cylinder is fixedly installed in inside the rig of existing seabed,Including suction cylinder barrel、It is sleeved on the pumping piston in suction cylinder barrel and piston rod assembly、Piston end cap,Sealed by sealing ring between pumping piston and suction inner wall of cylinder,Pumping piston bar one end is fixing with pumping piston to be connected,The other end creeps into unit head with existing seabed rig or its propulsive mechanism is connected,Unit head propulsive mechanism linkage driving is crept into by existing seabed rig,Or crept into the direct related driving of unit head by existing seabed rig,It is not to connect flush water pump that this seabed rig creeps into the other end of unit head feed pipe,But be connected with one end rodless cavity or the rod chamber of described pumping piston cylinder,Described pumping piston cylinder does not connects the other end rod chamber of described feed pipe or rodless cavity is then direct and external world's sea water connects emptying.
  2. The bottom sediment coring device being applicable to seabed rig the most according to claim 1, it is characterized in that: described feed pipe is not to be directly accessed described pumping piston cylinder, but be connected with described pumping piston cylinder by a multidirectional permutator valve, the another port of described multidirectional permutator valve is connected with seabed rig flush water pump.
  3. The bottom sediment coring device being applicable to seabed rig the most according to claim 1 and 2, it is characterised in that: described pumping piston cylinder water pump replaces.
  4. The bottom sediment coring device being applicable to seabed rig the most according to claim 3, it is characterised in that: described core bit is single tube drilling tool, two-tube drilling tool or three pipe drilling tools that existing seabed rig is conventional, or core plugging notifying mechanism of rope core drilling.
CN201520849125.1U 2015-10-30 2015-10-30 Deep -sea sediment held coring device suitable for seabed rig Active CN205577920U (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520849125.1U CN205577920U (en) 2015-10-30 2015-10-30 Deep -sea sediment held coring device suitable for seabed rig

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CN205577920U true CN205577920U (en) 2016-09-14

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110514471A (en) * 2019-09-24 2019-11-29 自然资源部第二海洋研究所 A kind of electronic sampler and its sampling method of marine engineering geology detection
WO2020034661A1 (en) * 2018-08-13 2020-02-20 湖南科技大学 Sediment core-boring drilling process suitable for submarine rope core-boring drill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020034661A1 (en) * 2018-08-13 2020-02-20 湖南科技大学 Sediment core-boring drilling process suitable for submarine rope core-boring drill
CN110514471A (en) * 2019-09-24 2019-11-29 自然资源部第二海洋研究所 A kind of electronic sampler and its sampling method of marine engineering geology detection

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