CN104594800A - Carrying type deep sea core drilling machine - Google Patents

Abstract

The invention relates to an offshore exploration mechanical device, in particular to a carrying type deep sea core drilling machine which can be carried on a manned submersible vehicle or an underwater robot to obtain deep sea rock and ore samples. The carrying type deep sea core drilling machine comprises a drilling machine main shaft, a bearing pedestal, a drilling tool, a hydraulic motor and a linkage base. The drilling machine main shaft is installed on the bearing pedestal. One end of the drilling machine main shaft is connected with the drilling tool, and the other end of the drilling machine main shaft is connected with an output shaft of the hydraulic motor. The hydraulic motor is installed in the linkage base. One end of the linkage base is fixed to the bearing pedestal, and the other end of the linkage base is fixed to a mechanical arm of the manned submersible vehicle or the underwater robot. A pressure compensation device is arranged on the bearing pedestal. The carrying type deep sea core drilling machine has the advantages of being compact in structure, light in weight, high in reliability and safety and the like; the various requirements under severe working conditions of deep sea core sampling can be met, the samples can be conveniently and reliably provided for the scientific research on deep sea ore resources, and the carrying type deep sea core drilling machine is suitable for underwater core drilling.

Description

A carry-on deep-sea core drilling rig

technical field

The invention relates to marine exploration mechanical equipment, in particular to a deep-sea core drilling machine for obtaining deep-sea cobalt-rich crusts and polymetallic sulfide cores.

Background technique

The vast ocean floor is rich in mineral resources, including cobalt-rich crusts, hydrothermal sulfide ores, etc., which have huge economic value and strategic significance. The deep sea is one of the few unknown regions on earth. Scientists are interested in deep sea mineral composition, mineral age, mineral formation mechanism, mineral physical and mechanical properties, and the biological and environmental conditions around minerals. These studies covering multiple disciplines of marine geology, marine biology, marine chemistry, marine physics, and marine mining require a large number of deep-sea mineral samples. At the same time, a large amount of exploration and core drilling work must be carried out in the evaluation of reserves of cobalt-rich crusts. Therefore, the acquisition of deep-sea mineral core samples plays a vital role in the research and development of marine science. At present, the acquisition of seabed cores is mainly through the sea surface scientific research ship, which lowers large-scale core drilling rigs to the seabed at a depth of several thousand meters to drill cores. Obtaining deep-sea core samples is extremely time-consuming, laborious, and difficult, and the number is extremely limited. Therefore, there is a need for a deep-sea core drilling rig to obtain seabed core samples conveniently and quickly, so as to provide samples for scientific research on deep-sea mineral resources, especially cobalt-rich crusts and metal sulfides, and at the same time provide resources for cobalt-rich crusts. Provide on-site first-hand information.

The working environment in the deep sea, especially at a water depth of 7,000 meters, is harsh. The core drilling rig has to withstand high pressure of several hundred atmospheres. The quality and loading requirements of the submersible under water are very strict. Good high pressure resistance and sealing performance and anti-corrosion and other functions. This brings considerable difficulty to the design of the drilling rig. At the same time, since the manned submersible or the remote-controlled underwater robot can provide the drilling rig with very little stable drilling support (only a few hundred Newtons) after ensuring its own stability and safety on the seabed, this is different from that of land rocks. The drilling pressure of tens of thousands of newtons required by core drilling rigs is far from it. Therefore must design the special drill bit drilling tool, can only meet the requirement of drilling the rock core under the condition of providing less drilling force. In addition, the complex and variable hardness of rock formations on the seabed makes it easy for core drilling rigs to get stuck, which poses a great safety hazard to manned submersibles or remote-controlled underwater robots. Therefore, the drilling rig must be designed with corresponding countermeasures to ensure the safety of manned submersibles or remote-controlled underwater vehicles in the deep sea. However, the existing deep-sea core drilling rigs have complex structures, heavy weight, pressure resistance and sealing performance that cannot meet the deep-sea environment, and there are no effective protection measures when the drilling rig gets stuck, so they are not suitable for carrying on manned submersibles or remotely controlled underwater Get off the robot.

Contents of the invention

In order to overcome the deficiencies of the existing technology, a portable deep-sea core drilling rig is provided. The deep-sea core drilling rig has the characteristics of compact structure, light weight, stability, reliability, and good safety, and can meet the requirements of harsh working conditions for deep-sea core sampling. The deep-sea core drilling rig of the present invention is used on a manned submersible or a remote-controlled underwater robot, which can provide samples for scientific research on cobalt-rich crusts and polymetallic sulfides in deep-sea mineral resources and resource assessment for cobalt-rich crusts The required on-site first-hand resource information provides a new and fast technical means.

The present invention is a mounted deep-sea core drilling rig, which can be mounted on a manned submersible or an underwater robot to obtain deep-sea rock ore samples. Connecting seat, the main shaft of the drilling rig is installed on the bearing seat, one end of the main shaft of the drilling rig is connected with the drilling tool, and the other end is connected with the output shaft of the hydraulic motor, the hydraulic motor is arranged in the connecting seat, and one end of the connecting seat is connected with the bearing The seat is fixed, and the other end is fixed with the power supply device; the bearing seat is also provided with a pressure compensation device.

Specifically, the pressure compensating device includes a pipe joint, a hose, a plug, and a clamp. One end of the hose communicates with the bearing seat through the pipe joint, and the pipe joint and the bearing seat are sealed and connected by a sealing ring. The other end of the hose is plugged into the plug, and the clamp seals and fixes the hose and the plug from the outside of the hose.

Further, the main shaft of the drilling rig is also provided with a slag discharge pump connected to the bearing seat, the slag discharge pump includes a pump body, a pump cover and an impeller, the pump body and the pump cover are connected by screws, and the pump The body is movably sealed with the main shaft of the drilling rig through the oil seal, and the pump cover is movably sealed with the main shaft of the rig through the packing flange and packing. The pump body and the pump cover form a drainage cavity, and the impeller is located in the drainage cavity and It is fixed on the main shaft of the drilling rig by positioning pins, and the pump body is also provided with a water inlet hole.

Specifically, the drilling tool includes a hollow connecting piece, a drill rod and a drill bit, one end of the connecting piece is threadedly connected with the main shaft of the drilling machine, and the other end is threadedly connected with the drill rod, and the drill bit is installed at the front end of the drill rod. A jumper is also arranged in the drill rod.

Further, a deep hole is processed on the main shaft of the drilling rig, and the deep hole extends from the end of the main shaft of the drilling rig to the drainage cavity of the slag discharge pump. The deep hole runs through the drainage hole, so that the deep hole communicates with the slag discharge pump and the connecting piece.

Further, a pair of tapered roller bearings is installed between the bearing seat and the main shaft of the drilling rig, one side of the tapered roller bearings 7 is close to the shoulder of the main shaft of the drilling machine, and the other side is close to the inner wall of the bearing seat.

Preferably, the power supply device is a manipulator of a manned submersible or an underwater robot; the coupling seat is fixed on the manipulator of the manned submersible or an underwater robot by a pin shaft, and the coupling seat is connected and fixed with a bearing seat by a screw .

Preferably, the main shaft of the drilling rig and the output shaft of the hydraulic motor are connected through a key and a keyway.

Preferably, the drill rod is a hollow drill rod, and a slagging hole is arranged on the drill rod.

Specifically, a section of the drill rod close to the drill bit is a core tube, and the circlip is installed inside the core tube, and the outer diameter of the circlip is larger than the inner diameter of the drill bit.

Due to the above technical scheme, the present invention has the following beneficial effects:

1. In order to overcome the deep sea pressure, the present invention adds a pressure compensation device on the core drilling rig, through which the water pressure of the deep sea is transmitted to the inside of the drilling rig, so that the internal and external pressure of the drilling rig tends to be balanced, and the impact of the deep sea pressure on the drilling rig is eliminated. Unfavorable effects, and simultaneously make the drilling rig casing unnecessary to be made into a high-pressure shell, reduce the weight of the drilling rig, and save the manufacturing cost.

2. The core drilling rig of the present invention can easily drill and break the rock through the cooperation of the drill bit and the retaining spring, so that the shape of the rock to be sampled is regular.

3. The slag discharge pump of the core drilling rig of the present invention can introduce seawater into the main shaft, and then introduce seawater into the vicinity of the drill bit of the drilling tool through the deep hole and the connecting piece and then flow out, so as to eliminate the gravel generated by the drilling tool during the drilling process. sundries, to avoid stuck drilling tools, to ensure the integrity of sampling.

4. The drill pipe of the present invention is threadedly connected to the connecting piece. If the drill bit is stuck, the drill pipe can be separated from other parts of the core drilling machine by reversing the hydraulic motor, eliminating the need for manned submersibles or remote-controlled underwater vehicles. Potential safety hazards and economic losses caused by lowering robots can be eliminated, and the safety of seabed sampling operations can be improved.

5. The drilling part of the drilling rig of the present invention is only composed of a drill pipe and a drill bit, which solves the problem of difficulty in drilling and opening holes caused by the jumping of the drill bit caused by machining errors.

6. The deep-sea core drilling rig of the present invention is powered by a manned submersible or a remote-controlled underwater robot, which saves the added weight of its own hydraulic or motor power and reduces the quality of the drilling rig.

In summary, the mounted deep-sea core drilling rig of the present invention has the advantages of compact structure, light weight, high reliability, good safety, etc., and can meet the various requirements of deep-sea core sampling under harsh working conditions, and can be convenient, Reliably provide samples for scientific research of deep sea mineral resources, suitable for underwater core drilling, but also suitable for land core drilling.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained based on these drawings without creative work.

Fig. 1 is the structural representation of carry-on type deep sea core drilling rig of the present invention;

Fig. 2 is a schematic diagram of the connection of the mounted deep-sea core drilling rig of the present invention mounted on a manned submersible or an underwater robot.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Example:

Referring to Fig. 1, the carry-on deep-sea core drilling rig of the present invention can be carried on a manned submersible or an underwater robot to obtain deep-sea rock ore samples. Tool, hydraulic motor 3 and coupling seat 2, the drilling machine main shaft 6 is installed on the bearing seat 5, one end of the drilling machine main shaft 6 is connected with the drilling tool, and the other end of the drilling machine main shaft 6 is matched with the output shaft of the hydraulic motor 3 through a key and a keyway connection, the hydraulic motor 3 is arranged in the coupling seat 2, one end of the coupling seat 2 is connected and fixed with the bearing seat 5 through the screw 4, and the other end of the coupling seat 2 is connected with the manipulator of the manned submersible or the underwater robot by the pin shaft 1 20 is fixed, the manned submersible or the underwater robot provides the feed force in the drilling direction for the drilling rig, and its hydraulic system drives the hydraulic motor 3 to rotate, thereby saving the added weight of the drilling rig's own hydraulic or electric power. A pair of tapered roller bearings 7 are installed between the bearing housing 5 and the drilling machine main shaft 6, one side of the tapered roller bearings 7 is close to the shaft shoulder of the drilling machine main shaft, and the other side is close to the inner wall of the bearing housing; the tapered roller bearings are used To support and limit the spindle of the drilling rig, the coupling seat and the tapered roller bearing cooperate to directly transmit the force provided by the manned submersible or the underwater robot to the spindle of the drilling rig, thereby protecting the output spindle of the hydraulic motor 3 .

The bearing seat 5 is also provided with a pressure compensation device, the pressure compensation device includes a pipe joint 21, a hose 22, a plug 23 and a clip 24, and one end of the hose 22 communicates with the bearing seat 5 through the pipe joint 21, The pipe joint 21 and the bearing seat 5 are sealed and connected by a sealing ring, and the other end of the hose 22 is plugged into the plug 23 , and the clip 24 seals and fixes the hose and the plug from the outside of the hose 22 . In the deep sea environment, the drilling rig is subjected to strong underwater pressure, and the hose of the pressure compensation device deforms under the water pressure, which plays a role in balancing the internal and external pressure of the drilling rig. It can save cost and reduce the weight of the drilling rig.

Described drilling tool comprises hollow connector 17, hollow drill rod 16 and drill bit 14, and one end of described connector 17 is threadedly connected with drilling rig main shaft 6, and the other end is threaded with drill rod 16, and described drill bit 14 is installed on the drill. The front end of rod 16, the one section of described drilling rod 16 near drill bit 14 is rock core tube, and jump ring 15 is installed inside rock core tube, and the outer diameter of jump ring 15 is greater than the inner diameter of drill bit 14. Because the outer diameter of jump ring is greater than the inner diameter of drill bit so jump ring can not deviate from drill bit front end. The circlip is a thin-walled cylindrical part made of spring steel, with an open side wall and an inner guide cone at the front end. In its free state, the inner diameter of the small end of the inner guide cone is smaller than the diameter of the rock core, while the inner diameter of the large end of the inner guide cone is greater than the diameter of the rock core. Therefore, when drilling, the rock core is guided into the jump ring through the large end of the inner guide cone. After the drilling is completed, the drill rig makes a slight radial swing to break the core outside the drill bit. At this moment, the rock core inside the drill bit is stuck in the drill bit and the core tube inside by the jump ring, and will not slip out. The drilling part of the drilling rig of the invention is only composed of a drill rod and a drill bit, which solves the problem of difficulty in drilling and opening holes caused by the jumping of the drill bit caused by machining errors.

The main shaft 6 of the drilling rig is also provided with a slag discharge pump connected to the bearing housing 5, the slag discharge pump includes a pump body 18, a pump cover 10 and an impeller 19, and the pump body 18 and the pump cover 10 are connected by screws , the pump body 18 is movably sealed with the drilling rig main shaft 6 through an oil seal, and the pump cover 10 is movably sealed with the drilling rig main shaft 6 through the packing flange and packing, and the pump body 18 and the pump cover 10 form a drainage cavity, so The impeller 19 is located in the drainage cavity and is fixed on the main shaft 6 of the drilling rig by the positioning pin 9, and the pump body 18 is also provided with a water inlet; the main shaft 6 of the drilling rig is processed with a deep hole 13, the deep hole 13 extends from the end of the main shaft of the drilling rig to the drainage cavity of the slag discharge pump, and a drainage hole connected with the deep hole 13 is opened on a section where the main shaft of the drilling rig is located in the drainage cavity, so that the deep hole 13 is connected A slag discharge pump and a connecting piece 17, and a slag discharge hole is arranged on the drill pipe close to the drill bit. During the drilling process, seawater enters the drainage cavity from the water inlet hole on the pump body, and the impeller rotates so that the seawater entering the drainage cavity enters the inside of the main shaft of the drilling rig, and flows along the deep hole of the main shaft of the drilling rig to the connecting piece and the drill pipe, and then It flows out from the slag discharge hole on the drill pipe to remove debris such as debris remaining inside the drill pipe and connectors during the drilling process, so that the core sampling can be carried out smoothly and the integrity of the sample can be guaranteed.

Referring to Fig. 2, during the sampling process, the manipulator 20 of the manned submersible or the remote-controlled underwater vehicle vertically aligns the drill bit 14 of the drilling rig to the seabed rock formation to be sampled, and keeps the manned submersible or the remote-controlled underwater vehicle and the manipulator 20 stable , turn on the hydraulic system of the manned submersible or the remote-controlled underwater robot to make the hydraulic motor 3 of the drilling rig rotate forward. Apply a forward feed force to the rock formation, and increase the forward drilling force after the drill bit is opened. At this time, the retaining spring 15 can be pushed to the upper part of the retaining spring seat by the core, and the core enters the drill pipe smoothly. . The drilling feed force provided by the manned submersible or the remote-controlled underwater robot can be adjusted to meet the needs of different drilling feed forces required by rock cores with different hardness. During the drilling process, the output shaft of the hydraulic motor 3 drives the drilling rig main shaft 6 to rotate, and the drilling rig main shaft 6 drives the impeller 19 of the slag discharge pump to rotate, so that seawater enters the slag discharge pump from the through hole on the slag discharge pump pump body 18 and then goes along the The deep hole of the main shaft 6 of the drilling rig enters the connecting piece and the drill pipe, and the water flows out of the drill bit 14 with gravel and other sundries to achieve the purpose of slag removal to ensure the smooth progress of core sampling and the integrity of the core. When the drilling rig reaches the designated position, the hydraulic motor 3 stops rotating, and when the manipulator 20 lifts the drill, the drilling rig moves up and contacts the circlip 15, forcing the circlip 15 to hold the rock core tightly, so that the rock core is broken from the root and ensures that the rock core is at the inside the drill pipe without falling out. The manipulator 20 withdraws slowly along the original route of drilling with the rig until the drill bit 14 leaves the rock formation completely, and the manipulator 20 retracts the rig. So far, the drilling rig has completed the core sampling work. Considering the safety of seabed work, the drill pipe of the present invention is threadedly connected to the connecting piece. If the drill bit is stuck, the manned submersible or the remote-controlled underwater robot can reverse the rotation of the hydraulic motor to make the drill pipe and the rock The other parts of the core drilling rig are separated, eliminating potential safety hazards and economic losses caused to manned submersibles or remote-controlled underwater robots, and improving the safety of seabed sampling operations.

The above disclosures are only several preferred embodiments of the present invention, which certainly cannot limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (10)

1. a carrying type deep sea drill core rig, it is characterized in that, described carrying type deep sea drill core rig comprises drill spindle (6), bearing support (5), drilling tool, hydraulic motor (3) and connection seat (2), described drill spindle (6) is arranged on bearing support (5), one end of drill spindle (6) is connected with drilling tool, the other end is connected with the output shaft of hydraulic motor (3), described hydraulic motor (3) is arranged in connection seat (2), one end of described connection seat (2) and bearing support (5) are fixed, the other end and power supplying apparatus are fixed, (5) are also provided with pressure compensator to described bearing support.

2. carrying type deep sea drill core rig according to claim 1, it is characterized in that, described pressure compensator comprises union (21), flexible pipe (22), plug (23) and clip (24), one end of described flexible pipe (22) is communicated with bearing support (5) by union (21), be tightly connected by sealing ring between union (21) and bearing support (5), the other end of flexible pipe (22) fills in plug (23), and flexible pipe and plug seal fixing from flexible pipe (22) outside by described clip (24).

3. carrying type deep sea drill core rig according to claim 2, it is characterized in that, described drill spindle (6) is also provided with the deslagging pump be connected with described bearing support (5), described deslagging pump comprises the pump housing (18), pump cover (10) and impeller (19), the described pump housing (18) and pump cover (10) are connected by screw, the described pump housing (18) is by oil sealing and drill spindle (6) movable sealing, described pump cover (10) is by packing flange and packing and drill spindle (6) movable sealing, the described pump housing (18) and pump cover (10) form drainage cavity, described impeller (19) is positioned at described drainage cavity and is fixed on drill spindle (6) by shop bolt (9), (18) are also provided with inlet opening with the described pump housing.

4. carrying type deep sea drill core rig according to claim 3, it is characterized in that, described drilling tool comprises the connector (17) of hollow, drilling rod (16) and drill bit (14), one end of described connector (17) is threaded with drill spindle (6), the other end is threaded with drilling rod (16), described drill bit (14) is arranged on the front end of drilling rod (16), is also provided with jump ring (15) in described drilling rod (16).

5. carrying type deep sea drill core rig according to claim 4, it is characterized in that, described drill spindle (6) is processed with a deep hole (13), described deep hole (13) extends to the drainage cavity of deslagging pump from the end of drill spindle, be positioned at described drainage cavity at drill spindle one section also offers the conduction hole through with described deep hole (13), thus makes described deep hole (13) be communicated with deslagging pump and connector.

6. carrying type deep sea drill core rig according to claim 5, it is characterized in that, a pair taper roll bearing (7) is installed between described bearing support (5) and drill spindle (6), the one side of described taper roll bearing (7) is close to the shaft shoulder of drill spindle, and another side is close to bearing support inwall.

7. the carrying type deep sea drill core rig according to claim 1-6 any one, is characterized in that, described power supplying apparatus is the manipulator of manned submersible or underwater robot; Described connection seat (2) adopts bearing pin (1) to be fixed on the manipulator of manned submersible or underwater robot, and connection seat (2) is connected and fixed by screw (4) and bearing support (5).

8. carrying type deep sea drill core rig according to claim 7, is characterized in that, the output shaft of described drill spindle (6) and hydraulic motor (3) is connected by key and keyway.

9. the carrying type deep sea drill core rig according to claim 4 or 5, is characterized in that, described drilling rod (16) is hollow drill pipe, and drilling rod is provided with mud hole.

10. carrying type deep sea drill core rig according to claim 9, it is characterized in that, one section of the close drill bit (14) of described drilling rod (16) is core barrel, described jump ring (15) is arranged on core barrel inside, and the external diameter of jump ring (15) is greater than the internal diameter of drill bit (14).