Seabed sampling equipment

Abstract

The utility model relates to a sampling device, and discloses seabed sampling equipment which comprises a shell, a hose, a bearing middle frame, a sampling device, a waterproof sealing ring and a supporting device. The shell can comprise an upper pressure-resistant shell and a lower pressure-resistant shell, the upper pressure-resistant shell and the lower pressure-resistant shell form a containing space, and a pipeline hole is formed in the upper portion of the upper pressure-resistant shell. One end of the hose is connected with the pipeline hole, the other end of the hose is connected with the offshore equipment, and the hose is used for communicating the accommodating space with the offshore equipment, so that the seabed sampling equipment can obtain electrical supply of the offshore equipment. The bearing middle frame is fixed in the shell, the sampling device comprises an air compression pump, a sampler actuating cylinder, a sampler and a sampler plug, the sampler is fixedly connected with the sampler plug, the sampler plug is in sliding connection with the sampler actuating cylinder, an opening of the sampler actuating cylinder faces downwards, and the sampler plug and the sampler actuating cylinder form a closed space; the air compression pump is fixed on the bearing middle frame and is communicated with the closed space so as to push the sampler to be downwards inserted into the seabed.

Description

TECHNICAL FIELD

[0001] The present application relates to a sampling device, in particular to a seabed sampling device. BACKGROUND

[0002] In the field of marine engineering construction, marine geological research, etc., the analysis of the characteristics of soft soil in shallow sea is very important, and accurate acquisition of representative soft soil samples is the basis for related research and engineering decision-making. The traditional seabed soft soil sampling device has many shortcomings, such as insufficient sampling depth, insufficient control accuracy of sampling position, and limited resources carried by the device, resulting in poor reliability.

[0003] Therefore, there is a need for a seabed soft soil sampling device with higher sampling accuracy and reliability. SUMMARY

[0004] The technical problem to be solved by the present application is to improve the sampling accuracy and reliability of the sampling device.

[0005] To solve the above technical problems, the present application provides a seabed sampling device, which comprises: a shell, the shell comprising an upper pressure-resistant shell and a lower pressure-resistant shell, the upper pressure-resistant shell and the lower pressure-resistant shell forming a containing space, and a pipeline hole being arranged above the upper pressure-resistant shell; a hose, one end of the hose being connected with the pipeline hole, and the other end of the hose being connected with a marine device, the hose being used to communicate the containing space with the marine device, so that the seabed sampling device can obtain electrical supply from the marine device; a bearing middle frame, the bearing middle frame being fixed in the shell; a sampling device, the sampling device comprising an air compressor, a sampler actuating cylinder, a sampler, and a sampler plug, the sampler and the sampler plug being fixedly connected, the sampler plug being in sliding connection with the sampler actuating cylinder, the sampler actuating cylinder being open downward, the sampler plug and the sampler actuating cylinder forming a sealed space, the air compressor being fixed on the bearing middle frame, and the air compressor being in communication with the sealed space, so as to push the sampler to insert into the seabed; a water sealing ring, the water sealing ring being in contact with the seabed, and the air compressor being in communication with the water sealing ring, the air compressor being further used to blow seawater out of the water sealing ring; and a supporting device, the supporting device being installed on the lower pressure-resistant shell.

[0006] In another embodiment, the sampling device further comprises an air tank, the air tank being connected between the air compressor and the gas-consuming equipment.

[0007] In another embodiment, the seabed sampling device further comprises a hydraulic oil pump and a hydraulic oil tank; the supporting device comprises a hydraulic actuating rod, a supporting plate and an oil pipe, the oil pipe passes through the lower pressure-resistant shell, the hydraulic actuating rod is in communication with the hydraulic oil pump through the oil pipe, and the hydraulic oil pump is used to provide hydraulic power to the hydraulic actuating rod; the hydraulic oil pump is in communication with the hydraulic oil tank and the hydraulic actuating rod respectively, and the hydraulic oil tank is used to provide hydraulic oil to the hydraulic oil pump and the hydraulic actuating rod; one end of the hydraulic actuating rod is connected with the lower pressure-resistant shell, and the other end of the hydraulic actuating rod is rotatably connected with the supporting plate, and the hydraulic actuating rod is used to adjust the distance between the shell and the seabed.

[0008] In another embodiment, the sampling device further comprises a flow dividing valve, a first control valve, a second control valve and a vacuum generator, the flow dividing valve comprises at least a flow dividing inlet, a first flow dividing outlet and a second flow dividing outlet, the first control valve and the second control valve are used to control the on-off of the airflow; the air compression pump is in communication with the sealed space, comprising: the air compression pump is connected with the flow dividing inlet, the first flow dividing outlet is in communication with the sealed space through the first control valve; the second flow dividing outlet is connected with the air inlet of the vacuum generator through the second control valve, the vacuum port of the vacuum generator is in communication with the sealed space, and the vacuum generator is used to suck the vacuum of the sealed space through the vacuum port of the vacuum generator when the second control valve is opened.

[0009] In an embodiment, the first control valve or the second control valve is any one of the following: a safety valve; a pressure regulating valve; a pilot overflow valve; an electromagnetic valve.

[0010] In another embodiment, the supporting plate is in the shape of a snow shovel, and the supporting plate is used to increase the contact area between the seabed sampling device and the seabed.

[0011] In another embodiment, the hydraulic oil pump and the air compression pump are bolted on the load-bearing middle frame, and the hydraulic oil pump and the air compression pump are symmetrically distributed with the center line of the load-bearing middle frame.

[0012] In an embodiment, the gas tank and the hydraulic oil tank are welded in the lower pressure-resistant shell.

[0013] In another embodiment, the sampler plug and the sampler are threadedly matched.

[0014] In another embodiment, the water sealing ring is nested at the bottom of the lower pressure-resistant shell.

[0015] Compared with the prior art, the seabed sampling device has the following beneficial effects:

[0016] The seabed sampling device of the embodiment of the present application is composed of an air compression pump, a sampler actuating cylinder, a sampler and a sampler plug, and forms a sampling device. Since the sampling actuating cylinder can provide a sliding space for the sampler plug, and the sampling actuating cylinder and the sampler plug form a closed space, the compressed air in the air compression pump can be used as power to push the sampler plug to move downward, and then drive the sampler to move downward quickly. The sliding space provided by the sampling actuating cylinder and the power of the compressed air make the sampling device accurately and quickly complete sampling, and the continuous power provided by the compressed air improves the depth of the sampler into the seabed. At the same time, since the upper pressure-resistant shell of the shell is provided with a pipeline hole, the power, air and other supplies can be obtained from the offshore equipment through the hose, so that the seabed sampling device can sample in the seabed for a long time, thereby improving the reliability of the seabed sampling device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a structural schematic diagram of a seabed sampling device according to an embodiment of the present application.

[0018] Figure 2 FIG. 2 is a structural schematic diagram of an A-A section of a seabed sampling device according to an embodiment of the present application.

[0019] Figure 3 FIG. 3 is a structural schematic diagram of a B-B section of a seabed sampling device according to an embodiment of the present application.

[0020] Figure 4 FIG. 4 is a structural schematic diagram of a sampling device according to an embodiment of the present application.

[0021] Figure 5 FIG. 5 is a structural schematic diagram of a C-C section of a seabed sampling device according to an embodiment of the present application.

[0022] Figure 6 FIG. 6 is a structural schematic diagram of a D-D section of a seabed sampling device according to an embodiment of the present application.

[0023] Figure 7 FIG. 7 is a block diagram of a sampling device according to an embodiment of the present application.

[0024] REFERENCE SIGNS:

[0025] 1, seabed sampling device, 2, offshore device, 3, seabed, 10, outer shell, 101, upper pressure shell, 102, lower pressure shell, 103, containing space, 1011, pipeline hole, 11, hose, 12, bearing middle frame, 13, sampling device, 131, air compression pump, 132, sampler actuator cylinder, 133, sampler, 134, sampler plug, 135, sealed space, 14, water stop, 15, gas storage tank, 16, hydraulic oil pump, 17, hydraulic oil storage tank, 18, support device, 181, hydraulic actuator rod, 182, support plate, 136, flow divider, 1361, flow divider air inlet, 1362, first flow divider air outlet, 1363, second flow divider air outlet, 137, first control valve, 138, second control valve, 139, vacuum generator. DETAILED DESCRIPTION

[0026] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0027] In the description of the present application, it should be understood that the term "gas using equipment" is used in the present application to refer to any equipment or device that uses compressed air, such as the sampling action cylinder, water stop, etc. in the present application. In addition, the term "electric equipment" is used in the present application to refer to any equipment or device that uses electric power to drive, such as the air compression pump, hydraulic oil pump, control device, lighting device, etc. in the present application.

[0028] In the description of the present application, it should be understood that the terms "first", "second", etc. in the specification and claims and drawings of the present application are intended to distinguish similar objects, and are not intended to describe a specific order or sequence. It should be understood that under appropriate circumstances, such terms can be interchanged, so that the embodiments of the present application can be implemented in a manner other than that shown or described. In addition, "include", "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a product or device that includes a series of components or units need not be limited to only those components or units explicitly listed, but can also include other components or units that are not explicitly listed but are inherent to such products or devices.

[0029] The ocean occupies about 70% of the area of the earth's surface, with the continuous advancement of marine resource development and offshore engineering construction (such as cross-sea bridges, seabed tunnels, offshore wind power infrastructure, etc.), it is crucial to have a deep understanding of the seabed geological conditions. As a kind of geological medium widely distributed at the bottom of the ocean, the physical and mechanical properties (such as shear strength, compressibility, permeability, etc.) of seabed soft soil have a decisive influence on the stability and safety of marine engineering.

[0030] For example, if the bearing capacity of the seabed soft soil is not accurately evaluated when designing a marine wind power foundation, the wind turbine may tilt or even collapse during operation. Therefore, obtaining high-quality seabed soft soil samples and conducting accurate analysis is the basis for ensuring the smooth implementation and long-term stable operation of marine engineering.

[0031] However, the traditional sampling equipment is prone to cause large disturbance to the sample when collecting seabed soft soil. During the sampling process, the shaking of the sampler when entering the soft soil can change the original structure and physical state of the soft soil, so that the obtained sample cannot truly reflect the in-situ characteristics of the seabed soft soil. This will cause the physical and mechanical parameters analyzed based on the sample to deviate, thereby affecting the accuracy of the engineering design. Moreover, due to the limited volume of the sampling equipment, the resources carried are limited, and the sampling equipment is difficult to operate on the seabed for a long time. There is not enough time to wait for the disturbance caused by the landing of the equipment to subside on the seabed, and the insufficient activity time also easily leads to insufficient actual operation time of sampling, thereby affecting the sampling quality.

[0032] Therefore, based on this, the seabed sampling equipment 1 of the preferred embodiment of the present application can include an outer shell 10, a hose 11, a bearing middle frame 12, a sampling device 13, a water sealing ring 14 and a supporting device 18. Figures 1-4

[0033] The outer shell 10 can include an upper pressure-resistant shell 101 and a lower pressure-resistant shell 102, and the upper pressure-resistant shell 101 and the lower pressure-resistant shell 102 form a containing space 103. The upper pressure-resistant shell 101 is provided with a pipeline hole 1011. One end of the hose 11 is connected with the pipeline hole 1011, and the other end of the hose 11 is connected with a marine device 2. The hose 11 is used to communicate the containing space 103 with the marine device 2, so that the seabed sampling equipment 1 can obtain the electrical supply of the marine device 2.

[0034] The bearing middle frame 12 is fixed in the outer shell 10. The sampling device 13 includes an air compression pump 131, a sampler actuating cylinder 132, a sampler 133 and a sampler plug 134. The sampler 133 and the sampler plug 134 are fixedly connected. The sampler plug 134 is in sliding connection with the sampler actuating cylinder 132. The sampler actuating cylinder 132 is open downward. The sampler plug 134 and the sampler actuating cylinder 132 form a closed space 135. The air compression pump 131 is fixed on the bearing middle frame 12. The air compression pump 131 is in communication with the closed space 135, so as to push the sampler 133 to insert into the seabed 3 downward.

[0035] The water sealing ring 14 is in contact with the seabed 3. The air compression pump 131 is in communication with the water sealing ring 14. The air compression pump 131 is also used to blow out seawater from the water sealing ring 14.

[0036] The supporting device 18 is installed on the lower pressure-resistant shell 102. ​

[0037] The sampling structure composed of the sampler actuating cylinder 132, the sampler 133 and the sampler plug 134 uses compressed air as driving force, and combines the advantages of precision of the sampler actuating cylinder 132 and the power of compressed air, and ensures the precision and speed of sampling.

[0038] Further, the cable hole and the hose 11 make it possible to obtain sufficient compressed air, which can significantly improve the operation time of the equipment, so as to provide sufficient time to select a sampling site and sufficient time to wait for the subsidence of seabed disturbance, so as to obtain samples that can better reflect the state of seabed soft soil.

[0039] At the same time, the presence of the water stop ring 14, combined with compressed air, can discharge seawater from the water stop ring 14, so that the sampling area of the sampling device 13 can be isolated by the water stop ring 14 to an approximately water-free environment, so as to reduce the interference of seawater on sampling.

[0040] It can be understood that any device or structure that needs to use compressed gas needs to be directly or indirectly connected with the air compression pump 131 through an air pipe, such as the sampler actuating cylinder 132 and the water stop ring 14. In order to facilitate understanding and observation of the structure of the seabed sampling equipment 1 in the present application, the structure of the air pipe is hidden in the present application, but this does not mean that the present application does not include the structure of the air pipe. The number, type and installation position of the air pipe can be determined according to actual needs, and the present application does not limit this.

[0041] In an embodiment of the present application, as shown in Figure 3 and Figure 5 The sampling device 13 can further include an air tank 15 connected between the air compression pump 131 and the gas-using equipment.

[0042] By adding the air tank 15, compressed air can be pre-stored in the air tank 15 by the air compression pump 131. Since the air outlet of the air tank 15 is more uniform, the air pressure of the air compression pump 131 is stabilized.

[0043] In another embodiment of the present application, the seabed sampling equipment 1 can further include a hydraulic oil pump 16 and a hydraulic oil storage tank 17.

[0044] The support device 18 can include a hydraulic actuating rod 181, a support plate 182, and an oil pipe. The oil pipe passes through the lower pressure-resistant shell 102. The hydraulic actuating rod 181 is connected to the hydraulic oil pump 16 through the oil pipe, and the hydraulic oil pump 16 is used to provide hydraulic power to the hydraulic actuating rod 181. The hydraulic oil pump 16 is connected to the hydraulic oil storage tank 17 and the hydraulic actuating rod 181, respectively, and the hydraulic oil storage tank 17 is used to provide hydraulic oil to the hydraulic oil pump 16 and the hydraulic actuating rod 181. One end of the hydraulic actuating rod 181 is connected to the lower pressure-resistant shell 102, and the other end of the hydraulic actuating rod 181 is rotatably connected to the support plate 182. The hydraulic actuating rod is used to adjust the distance between the outer shell 10 and the seabed 3.

[0045] By the above scheme, the structure with the hydraulic actuating rod 181 is used as the support device 18, so that the height of the support device 18 can be accurately adjusted by adjusting the hydraulic actuating rod 181, so that the seabed sampling device 1 can adapt to different seabed topographies. At the same time, by appropriately adjusting the height of the support device 18, such as lowering the height of the support device 18, the contact force between the water stop ring 14 and the seabed can be increased, so that the sealing effect of the water stop ring 14 is improved, and the residual seawater in the water stop ring 14 is reduced, further reducing the interference of seawater on the sampling device 13.

[0046] Based on the above scheme, the exemplary sampling process of the present application is as follows:

[0047] Device launching: The seabed sampling device 1 is slowly launched into the designated position on the seabed by the hoisting device of the offshore device 2. During the launching process, the offshore device 2 supplies power and gas to the seabed sampling device 1 through the cable hole, and simultaneously monitors the depth and position of the device in real time using the offshore device 2, to ensure that the device accurately reaches the target area.

[0048] Seabed positioning and stabilization: After the seabed sampling device 1 reaches the seabed, the hydraulic oil pump 16 is started to deliver the hydraulic oil in the hydraulic oil storage tank 17 to the hydraulic actuating rod 181, causing the hydraulic actuating rod 181 to contract and drive the device to descend until the water stop ring 14 is tightly attached to the seabed 3 of the area to be sampled. The hydraulic oil is circulated to maintain the stable working state of the hydraulic actuating rod 181.

[0049] Seawater isolation and air compression: After the device is stabilized, the compressed air pump starts to work, inhales air through the air pipe connected to the offshore device 2 through the cable hole, and stores the compressed air in the air storage tank 15. During this process, the continuous work of the compressed air pump continuously blows or absorbs the seawater that may exist in the water stop ring 14 from the gap, further ensuring the dryness and stability of the device working environment and reducing the influence of seawater on the internal components of the device and the sampling process.

[0050] Sampling operation: when the pressure in the gas tank 15 reaches the set value, the valve connected to the sampler 133 is opened, and the high-pressure gas quickly enters the sampler actuator cylinder 132, pushing the sampler 133 to move downward at high speed along the sampler actuator cylinder 132 and penetrating into the soft soil at the bottom of the sea. During the penetration process of the sampler 133, the conical structure design ensures that the complete soft soil sample can be smoothly obtained.

[0051] In this application, the diameter of the sampler actuator cylinder 132 can be smaller than the diameter of the sampler 133, so that when the sampler 133 reaches the bottom end of the sampler actuator cylinder 132, it can be retained in the sampler actuator cylinder 132 to prevent the sample from falling off.

[0052] Device recovery: after the sampling is completed, the offshore device 2 slowly lifts the device from the seabed to the sea surface. During the lifting process, the device remains stable to ensure that the obtained soft soil sample is not damaged. After the device is recovered to the offshore device 2, the sampler 133 is carefully taken out, the soft soil sample is taken out from the sampler 133 and properly stored for subsequent analysis and testing work.

[0053] It can be understood that, in order to prevent the backflow of compressed air, a check valve can be installed in the gas tank 15 to ensure that the pressure in the gas tank 15 rises steadily.

[0054] In order to further improve the sample quality, in an embodiment of the present application, as shown in Figure 7 the sampling device 13 can further include a shunt valve 136, a first control valve 137, a second control valve 138 and a vacuum generator 139.

[0055] The shunt valve 136 at least includes a shunt inlet 1361, a first shunt outlet 1362 and a second shunt outlet 1363, and the first control valve 137 and the second control valve 138 are used to control the on-off of the airflow.

[0056] The communication between the air compression pump 131 and the sealed space 135 is realized by the following structure: the air compression pump 131 is connected with the shunt inlet 1361, and the first shunt outlet 1362 is communicated with the sealed space 135 through the first control valve 137.

[0057] The second shunt outlet 1363 is connected with the air inlet of the vacuum generator 139 through the second control valve 138, and the vacuum port of the vacuum generator 139 is communicated with the sealed space 135. The vacuum generator 139 is used to suck the vacuum in the sealed space 135 through the vacuum port of the vacuum generator 139 when the second control valve 138 is opened.

[0058] It can be understood that the vacuum generator 139 is a conversion device, which can use the siphon principle to generate suction force by blowing compressed air, and can generate suction force at the vacuum port when the gas flows into through the air inlet of the vacuum generator 139 and flows out through the air outlet of the vacuum generator 139. Since the vacuum port is in communication with the closed space 135 of the sampler actuator 132, when the first control valve 137 is closed and the second control valve 138 is opened, the pushing force originally pushing the sampler 133 is replaced by the suction force generated at the vacuum port, so that the sampler 133 and the sampler plug 134 can be returned to the uppermost end of the sampler actuator 132, thereby reducing the interference of seawater on the obtained sample when the seabed sampling device 1 is recovered.

[0059] In an embodiment of the present application, the first control valve 137 or the second control valve 138 can be any one of the following: a safety valve, a pressure regulating valve, a pilot overflow valve, and a solenoid valve.

[0060] The safety valve uses a compression spring to achieve force balance, and the compression amount of the spring is controlled by a nut. When the pressure in the device or pipeline rises, the force of the medium acting on the valve disc exceeds the spring force, the valve disc opens, and the medium is discharged. When the pressure drops to a certain extent, the spring force resets the valve disc, and the valve is closed. When the safety valve is used as the first control valve 137, the air compression pump 131 works to gradually increase the air pressure, and when the safety valve reaches the set value, the communication with the closed space 135 is turned on, thereby pushing the sampler 133 to perform soft soil sampling.

[0061] The pilot overflow valve is composed of a main valve and a pilot valve. When the oil inlet pressure increases to open the pilot valve, the liquid flows back to the oil tank through the damping hole on the main valve core and the pilot valve. Due to the damping effect of the damping hole, the liquid pressure acting on the main valve core in the upward and downward directions is not equal, and the main valve core moves upward under the action of the pressure difference to open the valve port, realize overflow, and maintain the pressure basically stable. Adjusting the pressure regulating spring of the pilot valve can adjust the overflow pressure.

[0062] The pilot overflow valve and the pressure regulating valve can assist the safety valve to work.

[0063] When the solenoid valve is powered on, the valve rod is lifted by electromagnetic force, and the pilot port is opened. At this time, the upper chamber of the solenoid valve is relieved through the pilot hole, and a pressure difference of low-high is formed around the main valve core. Under the action of the pressure difference, the fluid pressure pushes the main valve core to move upward to open the main valve port. When the power is off, the valve rod is reset under the action of the spring force and the gravity of the main valve core, the pressure of the upper chamber of the solenoid valve rises, the fluid pressure pushes the main valve core to move downward, and the main valve port is closed.

[0064] In another embodiment of the present application, the support plate 182 can be a snow shovel, and the support plate 182 is used to increase the contact area of the seabed sampling device 1 and the seabed 3.

[0065] The stable support structure reduces the movement and friction of the device on the seabed 3, and reduces the mechanical wear between the bottom of the device and the seabed 3. At the same time, since the position of the device is relatively fixed, it is beneficial to ensure the accuracy of sampling.

[0066] The seabed environment is complex, and there are various obstacles such as reefs and protrusions. The snowshoe-shaped support plate 182 is raised at both ends, so that the device can more easily cross or slide over the obstacles when encountering obstacles. The two ends of the raised end can first contact the obstacles, and the center of gravity of the device can be appropriately raised, so that the device can pass over the obstacles with smaller resistance, reducing the possibility of damage to the device due to collision with the obstacles, and improving the adaptability and safety of the device in the complex seabed environment.

[0067] In the present application, as shown in Figure 5 The hydraulic oil pump 16 and the air compression pump 131 are bolted to the load-bearing middle frame 12, and the hydraulic oil pump 16 and the air compression pump 131 are symmetrically distributed with the center line of the load-bearing middle frame 12.

[0068] In an embodiment, as shown in Figure 6 The gas tank 15 and the hydraulic oil tank 17 are welded in the lower pressure-resistant shell 102.

[0069] Further, the gas tank 15 and the hydraulic oil tank 17 can also be symmetrically distributed with the center line of the load-bearing middle frame 12.

[0070] In an embodiment of the present application, the sampler plug 134 and the sampler 133 are threadedly connected. The threadedly connected sampler plug 134 and the sampler 133 make it convenient to replace spare parts, and facilitate the removal of the sampler 133 and the soil sample in the sampler 133 after returning to the water surface after sampling is completed.

[0071] In another embodiment, the water sealing ring 14 is nested on the bottom of the lower pressure-resistant shell 102. The water sealing ring 14 is nested on the lower pressure-resistant shell 102, and when subjected to the pressure of the seabed seawater, the seawater pressure will promote the water sealing ring 14 to be further pressed on the lower pressure-resistant shell 102, improve the assembly force, and the assembly is more convenient and firm and reliable.

[0072] Compared with the prior art, the seabed sampling device 1 of an embodiment of the present application has the beneficial effects that:

[0073] The seabed sampling device 1 of the embodiment of the present application is composed of the air compression pump 131, the sampler actuating cylinder 132, the sampler 133 and the sampler plug 134 to form the sampling device 13. Since the sampling actuating cylinder can provide a sliding space for the sampler plug 134, and the sampling actuating cylinder 132 and the sampler plug 134 form a closed space 135, the compressed air in the air compression pump 131 can be used as power to push the sampler plug 134 to move downward, and then drive the sampler 133 to move downward quickly. The sliding space provided by the sampling actuating cylinder 132 and the power of the compressed air make the sampling device 13 be able to accurately and quickly complete sampling. At the same time, since the upper pressure-resistant shell 101 of the shell 10 is provided with the pipeline hole 1011, the power, air and other supplies can be obtained from the offshore equipment 2 through the hose 11, so that the seabed sampling device 1 can sample for a long time under the sea, and thus the reliability of the seabed sampling device 1 is improved.

[0074] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, some improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A seabed sampling device, characterised in that, The seabed sampling device (1) comprises: an outer shell (10) comprising an upper pressure-resistant shell (101) and a lower pressure-resistant shell (102), the upper pressure-resistant shell (101) and the lower pressure-resistant shell (102) forming a containing space (103), an upper portion of the upper pressure-resistant shell (101) being provided with a pipeline hole (1011); a hose (11) having one end connected with the pipeline hole (1011) and the other end connected with a marine device (2), the hose (11) being used for communicating the containing space (103) with the marine device (2); a bearing middle frame (12) fixed in the outer shell (10); a sampling device (13) comprising an air compression pump (131), a sampler actuating cylinder (132), a sampler (133) and a sampler plug (134), the sampler (133) and the sampler plug (134) being fixedly connected, the sampler plug (134) being slidably connected with the sampler actuating cylinder (132), the sampler actuating cylinder (132) being open downward, the sampler plug (134) and the sampler actuating cylinder (132) forming a closed space (135), the air compression pump (131) being fixed on the bearing middle frame (12), the air compression pump (131) being communicated with the closed space (135) to push the sampler (133) to insert into a seabed (3) downward; a water sealing ring (14) being in contact with the seabed (3), the air compression pump (131) being communicated with the water sealing ring (14), the air compression pump (131) being further used for blowing seawater out of the water sealing ring (14); a supporting device (18) installed on the lower pressure-resistant shell (102).

2. The seabed sampling device of claim 1, wherein, The sampling device (13) further comprises an air storage tank (15) connected between the air compression pump (131) and a gas-consuming device.

3. The seabed sampling device of claim 2, wherein, The seabed sampling device (1) further comprises a hydraulic oil pump (16) and a hydraulic oil storage tank (17); the supporting device (18) comprises a hydraulic actuating rod (181), a supporting plate (182) and an oil pipe, the oil pipe penetrating through the lower pressure-resistant shell (102), the hydraulic actuating rod (181) being communicated with the hydraulic oil pump (16) through the oil pipe, the hydraulic oil pump (16) being used for providing hydraulic power to the hydraulic actuating rod (181); the hydraulic oil pump (16) is communicated with the hydraulic oil storage tank (17) and the hydraulic actuating rod (181) respectively, the hydraulic oil storage tank (17) being used for providing hydraulic oil to the hydraulic oil pump (16) and the hydraulic actuating rod (181); one end of the hydraulic actuating rod (181) is connected with the lower pressure-resistant shell (102), the other end of the hydraulic actuating rod (181) is rotatably connected with the supporting plate (182), the hydraulic actuating rod (181) being used for adjusting the distance between the outer shell (10) and the seabed (3).

4. The seabed sampling device of claim 1, wherein, The sampling device (13) further comprises a shunt valve (136), a first control valve (137), a second control valve (138) and a vacuum generator (139), the shunt valve (136) comprises at least a shunt inlet (1361), a first shunt outlet (1362) and a second shunt outlet (1363), the first control valve (137) and the second control valve (138) are used to control the on-off of air flow; The air compression pump (131) is connected with the closed space (135) comprising: the air compression pump (131) is connected with the shunt inlet (1361), the first shunt outlet (1362) is connected with the closed space (135) through the first control valve (137); The second shunt outlet (1363) is connected with the air inlet of the vacuum generator (139) through the second control valve (138), the vacuum port of the vacuum generator (139) is connected with the closed space (135), and the vacuum generator (139) is used to suck the closed space (135) through the vacuum port of the vacuum generator (139) when the second control valve (138) is opened.

5. The seabed sampling device of claim 4, wherein, The first control valve (137) or the second control valve (138) is any one of the following: Safety valve; pressure regulating valve; pilot overflow valve; solenoid valve.

6. The seabed sampling device of claim 3, wherein, The support plate (182) is snow shovel-shaped, and the support plate (182) is used to increase the contact area between the seabed sampling device (1) and the seabed (3).

7. The seabed sampling device of claim 3, wherein, The hydraulic oil pump (16) and the air compression pump (131) are bolted on the bearing middle frame (12), and the hydraulic oil pump (16) and the air compression pump (131) are symmetrically distributed with the center line of the bearing middle frame (12).

8. The seabed sampling device of claim 3, wherein, The gas storage tank (15) and the hydraulic oil storage tank (17) are welded in the lower pressure-resistant shell (102).

9. The seabed sampling device of claim 1, wherein, The sampler plug (134) and the sampler (133) are threadedly connected.

10. The seabed sampling device of claim 1, wherein, The water sealing ring (14) is nested in the bottom of the lower pressure-resistant shell (102).

Images