Segmented seafloor sediment pore water chemical collection and analysis device and use method thereof

Abstract

The present invention relates to the field of seafloor pore water chemical collection, and specifically to a segmented seafloor sediment pore water chemical collection and analysis device and a method of using the same. The present invention provides a segmented assembly type seafloor sediment pore water chemical composition analysis device, which can be assembled with other devices with different functions according to different needs to collect and analyze seafloor materials. A segmented assembly type seafloor sediment pore water chemical composition analysis device includes, from top to bottom, a waterproof circuit board cabin, an electrode protection chamber, and a transfer chamber; a variety of test function devices can be connected through threaded interfaces and wires reserved at the upper and lower ends, and assembled into a whole, so as to achieve the purpose of collecting different test information in one launch.

Description

Technical Field

[0001] The invention relates to the field of seafloor pore water chemical collection, and in particular to a segmented seafloor sediment pore water chemical collection and analysis device and a use method thereof. Background Art

[0002] With the rapid development of the marine industry, people are more and more eager to explore the seabed materials. The real grasp of the physical and chemical properties of the seabed materials has far-reaching significance for the construction of marine engineering. Through the analysis of seabed materials, the exploration of seabed oil, minerals, etc. can be carried out. At present, in the exploration and research of deep seabed, one detection device can only realize the exploration of one substance. Due to the particularity of the deep sea environment, data collection is difficult, and the power consumption of the detection platform and sensors is high. This poorly scalable device causes the defects of poor stability, low reliability, and low efficiency of the deep sea data acquisition system.

[0003] When detecting the chemical properties of seabed sediment pore water, the sampling time is very long, and the energy consumption and time cost of a sea trial are very high. Measuring only one parameter at a time is a waste of time and energy. Although the acquisition time of other parameters may not be as long as that of sediment pore water, the acquisition of other parameters can be used to assist in the analysis of other parameter changes caused or associated with changes in pore water chemical properties, which is conducive to discovering the natural laws of how other physical and chemical parameters change with changes in pore water chemical properties. At present, there is no literature reporting on seabed pore water chemical acquisition devices that can conveniently change the structure according to experimental requirements and arbitrarily combine sensors for joint testing. Summary of the invention

[0004] To this end, the present invention provides a segmented submarine sediment pore water chemical collection and analysis device, which includes, from top to bottom, a watertight circuit board cabin, an electrode protection chamber and a transfer chamber;

[0005] The upper and lower ends of the circuit board compartment are both provided with tapered external threads, and the lower end of the circuit board compartment is fixedly connected to the electrode protection cavity by means of threads through the tapered external threads.

[0006] The circuit board compartment is provided with a circuit board and an electric slip ring female socket, and the lower end of the circuit board compartment is provided with a 10-core watertight connector.

[0007] The electrodes installed on 5 of the 10-core watertight connectors correspond to the 5 wires behind the 5-core chemical electrodes, respectively. The 5 wires behind the 5-core chemical electrodes are connected to the 5-way wiring ports on the upper end of the circuit board. Among the remaining 5 cores of the 10-core watertight connector, 4 of them are connected to two power lines and two CAN buses, and bypass the circuit board in the circuit board compartment to connect to the 4 wires at the bottom of the electric slip ring female socket.

[0008] The lower end of the circuit board in the circuit board compartment is connected to five electrodes of a 10-core watertight connector;

[0009] The circuit board controls the electrodes to collect and process sample information by accessing the electrodes;

[0010] The upper and lower ends of the electrode protection cavity are tapered internal thread structures, the upper end of the electrode protection cavity is fixedly connected to the circuit board compartment by matching with the tapered thread of the circuit board compartment, and a plurality of circular holes are left on the electrode protection cavity;

[0011] The upper end of the adapter cavity is provided with a tapered external thread, and the upper end of the adapter cavity is fixedly connected to the electrode protection cavity by matching with the tapered internal thread of the electrode protection cavity, and the lower end of the adapter cavity is provided with a tapered internal thread.

[0012] A 5-core watertight connector is provided at the upper end of the transfer cavity, and the connection copper posts of the 5-core watertight connector are connected to the wires passing through the electrode protection cavity. The lower end of the 5-core watertight connector is connected to 4 wires to connect the second electric slip ring and the electric slip ring male connector.

[0013] The present invention also provides a method for using a segmented submarine sediment pore water chemical collection and analysis device, comprising the following steps:

[0014] S1. Assemble the segmented submarine sediment pore water chemical collection and analysis device:

[0015] Insert the 10-core watertight connector into the lower end of the circuit board compartment.

[0016] Connect 5 of the 10-core watertight connector to the 5 wires of the 5-core chemical electrode. Connect the 5 wires at the back of the 5-core chemical electrode to the 5-way wiring port at the front of the circuit board.

[0017] Use the 10-core watertight connector to connect the other 4 cores to two power lines and two CAN buses, bypass the circuit board in the circuit board compartment, and connect to the 4 wires at the bottom of the electric slip ring female socket.

[0018] Insert the circuit board into the circuit board compartment from the upper end, connect the lower end of the circuit board to the 5 electrode wires of the 10-core watertight connector, and connect the upper end and the remaining 4 wires of the 10-core watertight connector to the female socket of the electric slip ring;

[0019] Push the female socket of the slip ring from the upper end of the circuit board compartment into the mounting hole of the circuit board compartment;

[0020] The 10-core copper column part of the 10-core watertight connector is fixed by vulcanizing with vulcanized rubber; the 10-core of the 10-core watertight connector, except for the 5 electrodes connected at the bottom, the wires connected to the remaining 4 cores should pass through the electrode protection cavity of the second section;

[0021] Screw the upper end of the electrode protection cavity into the tapered thread at the lower end of the circuit board compartment through the tapered thread joint;

[0022] Insert an electric slip ring into the electrode protection cavity to prevent the wire from spinning and damaging the electrode;

[0023] Screw the upper end of the adapter chamber into the tapered thread at the lower end of the electrode protection chamber through the tapered thread joint.

[0024] A 5-core watertight connector is installed at the upper end of the transfer cavity. The connection copper column of the 5-core watertight connector is connected to the wires passing through the electrode protection cavity. The lower end of the 5-core watertight connector is connected to 4 wires to connect the second slip ring and the slip ring male connector.

[0025] Inject vulcanized rubber through the reserved slip ring cavity in the electrode protection cavity to cover the first slip ring.

[0026] Lay the whole device down horizontally, and inject vulcanized rubber again through the round hole on the electrode protection cavity to cover the connection between the first electric slip ring and the 10-core watertight connector without covering the electrode;

[0027] S2. Determine the parameters and sensor modules that need to be measured in this sea trial, and connect other test function devices through the threaded interfaces and wires reserved at the upper and lower ends of the segmented seabed sediment pore water chemical collection and analysis device;

[0028] S3. Collect and analyze pore water in seafloor sediments:

[0029] The electrode protection cavity is inserted into the underwater mud layer, so that the pore water can enter the electrode protection cavity through the small holes reserved on the electrode protection cavity under the action of the seabed pressure and contact the electrode. The seabed sample data is collected in real time through the built-in circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the specific implementation or the prior art description. Some specific embodiments of the present invention will be described in detail in an exemplary but not restrictive manner with reference to the drawings. The same reference numerals in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0031] Figure 1 It is a schematic diagram of the structure of the present invention.

[0032] Figure 2 It is a schematic diagram of the structure after the vulcanized rubber 1 is injected.

[0033] Figure 3 This is a schematic diagram of the structure when vulcanized rubber is not injected.

[0034] Figure 4It is a schematic diagram of the structure when the transfer cavity is not connected.

[0035] Figure 5 This is a schematic diagram of the structure of the circuit board cabin connected to the electrode protection cavity.

[0036] Figure 6 Schematic diagram of the structure for installing circuit boards, electric slip ring female sockets and 10-core watertight connectors in the circuit board compartment.

[0037] In the figure: 1. Electric slip ring female socket; 2. Circuit board; 3. Circuit board compartment; 4. 10-core watertight connector; 5. Chemical electrode; 6. Electrode protection cavity; 7. First electric slip ring; 8. 5-core watertight connector; 9. Adapter cavity; 10. Vulcanized rubber 1; 11. Vulcanized rubber 2; 12. Second electric slip ring; 13. Electric slip ring male connector; 14 Wire 1; 15. Wire 2; 16. Wire 3; 17. Wire 4; 18. Wire 5; 19. Electrode protection cavity hole 1; 20. Electrode protection cavity hole 2; DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0039] The device designed by the present invention can be assembled with other devices with different functions according to different needs to collect and analyze seabed materials. Due to the particularity of the seabed environment, a non-sealed environment is required for the material collection module, while other functional modules require good sealing. The device designed by the present invention is a device that can be assembled in sections to collect and analyze seabed pore water. Using a standard tapered threaded joint, considering that the information collection module requires a non-sealed environment, this device is designed as a three-section assembly structure, including a circuit board compartment, an electrode protection cavity and a transfer cavity. The first section of the circuit board compartment is mainly used to load the circuit board, the core component of the entire device. Because the circuit board has strict requirements on sealing, a separate sealing device is designed to accommodate the circuit board. The upper and lower ends of the circuit board compartment are tapered external threads, the upper end is reserved for connecting other devices to increase the scalability of the device, and the lower end is used to assemble the electrode protection cavity of the collection and analysis module of the device. The circuit board compartment is mainly loaded with a control circuit board and an electric slip ring female socket, and the lower end is installed with a 10-core watertight connector. The 10-core watertight connector is mainly used to install electrodes and is responsible for the connection between electrodes and circuit boards and electric slip ring female sockets. As the core of the whole device, the circuit board controls the electrodes to collect and process sample information by connecting to electrodes. The electric slip ring female socket is mainly designed for connecting to other detection modules. First, insert the 10-core watertight connector into the lower end of the circuit board compartment. Five of the 10-core watertight connectors are installed with electrodes. The 5 wires at the rear of the corresponding 5-core chemical electrode are connected to the 5-way wiring port at the front end of the circuit board. Four of the remaining 5 cores are connected to two power lines and two CAN buses, and extend around the circuit board in the circuit board compartment to connect to the 4 wires at the bottom of the electric slip ring female socket. Then insert the circuit board into the circuit board compartment from the upper end of the circuit board compartment, connect the 5 electrode wires of the 10-core watertight connector at the lower end of the circuit board, and connect the upper end and the remaining 4 wires of the 10-core watertight connector to the electric slip ring female socket. The electric slip ring female socket can be connected to the electric slip ring male of other detection devices to achieve the purpose of strong expansibility of this device. Then push the electric slip ring female socket from the upper end of the circuit board compartment into the mounting hole of the circuit board compartment. The 10-core copper column part of the 10-core watertight connector is fixed by vulcanization with vulcanized rubber. The 10-core of the 10-core watertight connector, except for the 5 electrodes connected to the bottom, the wires connected to the other 4 cores must pass through the electrode protection cavity of the second section. The second section is the electrode protection cavity, which is mainly used to collect samples, and the electric slip ring in the cavity is used to ensure that the wires do not rotate, thereby protecting the electrode. The upper and lower ends of the electrode protection cavity are conical internal thread structures, and the chemical electrode protection cavity can be directly screwed into the conical thread of the circuit board compartment. There are round holes on the electrode protection cavity to facilitate the subsequent injection of vulcanized rubber into the electrode protection cavity and the collection and analysis of pore water. The injection of vulcanized rubber is to protect the wires from the influence of water pressure. The third section is the adapter cavity, the upper end of the adapter cavity is a conical external thread, which can be directly screwed into the upper electrode protection cavity, and the lower end of the adapter cavity is a conical internal thread, which is used to connect other devices.A 5-core watertight connector is installed at the upper end of the transfer cavity, and the connection copper column of the 5-core watertight connector is connected to the wires passing through the electrode protection cavity. Four wires are connected to the lower end of the 5-core watertight connector, connecting the electric slip ring 2 and the electric slip ring male head. The electric slip ring male head can be connected to the electric slip ring female head socket of other devices to increase the scalability of the device. Finally, vulcanized rubber can be injected through the electric slip ring cavity hole reserved in the electrode protection cavity to cover the electric slip ring 1, and then the entire device can be laid down horizontally, and vulcanized rubber can be injected again through the electrode protection cavity hole to cover the connection between the electric slip ring 1 and the 10-core watertight connector. At this time, be careful not to cover the electrode.

[0040] Preferably, the three-stage design of the device all uses a standard tapered thread interface, and a female electric slip ring socket is reserved at the uppermost end, and a male electric slip ring socket is reserved at the lowermost end, which has good expansibility for connecting to other detection devices.

[0041] Preferably, the device adopts a three-stage design, which can well achieve the purposes of different components and different requirements. Since the circuit board compartment of the first section is loaded with circuit boards, the overall sealing of this section of the device is required to be very good to ensure that the circuit board will not be affected by water inflow or water pressure in the deep sea area, and can well complete the work of controlling chemical electrodes and collecting information. Since the second section of the electrode protection cavity needs to collect pore water in the seabed sediment, this section of the device is required to be unsealed. The pore water in the mud layer enters the electrode protection cavity through the small holes reserved on the electrode protection cavity under the action of the seabed pressure, so as to achieve the purpose of collecting pore water and conducting chemical analysis, while not affecting the sealing of the circuit board compartment. The third section of the adapter cavity also achieves the purpose of protecting the electric slip ring 2, wires and the electric slip ring male connector by the same means as the first section.

[0042] Preferably, the device adopts a segmented assembly design and can be connected to other test function devices through threaded interfaces and wires reserved at the upper and lower ends, such as a device for testing seabed vibrations. It can be assembled into a whole to achieve the purpose of collecting different test information in one launch.

[0043] Preferably, the electrode protection cavity protects the wire from the influence of the seabed pressure by injecting vulcanized rubber, so that it can work normally.

[0044] Preferably, the electrode protection cavity is provided with reserved tiny holes to collect pore water by means of the pressure of the seabed.

[0045] Preferably, the vulcanized rubber is injected by first placing the device vertically, and then injecting the vulcanized rubber by placing it horizontally, to ensure that the vulcanized rubber does not cover the electrodes, so that the electrodes can collect information normally.

[0046] Preferably, the wires in the device are connected by electric slip rings to ensure that the wires do not rotate, thereby protecting the electrodes and the wires.

[0047] Preferably, the device uses a structure with a built-in circuit board, which can collect seabed sample data in real time.

[0048] like Figure 1 As shown, a segmented assembly type submarine sediment pore water chemical composition analysis device in this example is mainly composed of a circuit board compartment 3, an electrode protection chamber 6 and a transfer chamber 9. The upper and lower ends of the circuit board compartment 3 are tapered external threads, the upper end thread is provided for connection with other external devices, and the lower end external thread is provided for connection with the electrode protection chamber. Figure 6 As shown, a 10-core watertight connector 4 is inserted into the lower end of the circuit board compartment, of which 5 copper cores are connected to chemical electrodes 5 for analyzing the chemical composition of pore water, and 4 of the other 5 copper cores are connected to 4 wires 17 and extend to the lower end. Five wires 1 are connected to the interfaces corresponding to the 5 chemical electrodes at the upper end of the 10-core watertight connector, and these 5 wires 1 will be connected to the circuit board 2, and the other 4 wires 2 bypass the circuit board 2 and are connected to the electric slip ring female socket 1. After installing the 10-core watertight connector 4, push the circuit board 2 connected to the 5 wires 1 into the circuit board compartment 3, and the 4 wires 3 at the upper end of the circuit board are connected to the electric slip ring female socket 1, and then the electric slip ring female socket 1 is inserted into the circuit board compartment 3, and assembled as shown. Figure 6 The device shown in the figure can be connected to other devices through external threads at the upper end and connected to the electrode protection chamber 6 through external threads at the lower end. Figure 5 The electrode protection cavity 6 has electrode protection cavity holes 1 and 2 for subsequent addition of vulcanized rubber. Figure 5 In the embodiment, the electric wire 4 will pass through the first electric slip ring, which ensures that the electric wire 4 will not rotate and damage the electrode. Figure 1 The switching cavity 9 shown in FIG. Figure 4 Connect as shown. The upper end of the adapter cavity 9 is an external thread for screwing into the electrode protection cavity 6. Install the 5-core watertight connector 8 into the adapter cavity 9, and the wiring copper column of the 5-core watertight connector 8 is connected to the wire 4 under the first electric slip ring. Screw the 5-core watertight connector 8 into the electrode protection cavity 6. Due to the effect of the first electric slip ring, the wire 4 does not rotate, and the protection electrode is not affected. The 4 wires 5 behind the 5-core watertight connector are connected to the second electric slip ring and the electric slip ring male head 13. Then inject vulcanized rubber through the electrode protection cavity hole 1 to cover the first electric slip ring; then lay the entire equipment horizontally, and inject vulcanized rubber through the electrode protection cavity hole 2 to cover the connection between the first electric slip ring and the 10-core watertight connector. At this time, be careful not to cover the electrode. After assembly, as Figure 1 As shown, the uppermost end is an external thread, with a female electric slip ring socket, which is connected to the male electric slip ring of other devices at the upper end. The lowermost end is an internal thread, with a male electric slip ring, which is connected to the female electric slip ring socket of other devices at the lower end.

[0049] The above descriptions are only some specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any person familiar with the art within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A segmented submarine sediment pore water chemical collection and analysis device, characterized in that: From top to bottom, it includes: a watertight circuit board compartment, an electrode protection chamber and a transfer chamber; The upper and lower ends of the circuit board compartment are both provided with tapered external threads, and the lower end of the circuit board compartment is fixedly connected to the electrode protection cavity by means of tapered external threads. The circuit board compartment is provided with a circuit board and an electric slip ring female socket, and the lower end of the circuit board compartment is provided with a 10-core watertight connector. The electrodes installed on 5 of the 10-core watertight connectors correspond to the 5 wires behind the 5-core chemical electrodes, respectively. The 5 wires behind the 5-core chemical electrodes are connected to the 5-way wiring ports on the upper end of the circuit board. Among the remaining 5 cores of the 10-core watertight connector, 4 of them are connected to two power lines and two CAN buses, and bypass the circuit board in the circuit board compartment to connect to the 4 wires at the bottom of the electric slip ring female socket. The lower end of the circuit board in the circuit board compartment is connected to five electrodes of a 10-core watertight connector; The circuit board controls the electrodes to collect and process sample information by accessing the electrodes; The upper and lower ends of the electrode protection cavity are tapered internal thread structures, the upper end of the electrode protection cavity is fixedly connected to the circuit board compartment by matching with the tapered thread of the circuit board compartment, and a plurality of circular holes are left on the electrode protection cavity; The upper end of the adapter cavity is provided with a tapered external thread, and the upper end of the adapter cavity is fixedly connected to the electrode protection cavity by matching with the tapered internal thread of the electrode protection cavity, and the lower end of the adapter cavity is provided with a tapered internal thread. A 5-core watertight connector is provided at the upper end of the transfer cavity, and the connection copper posts of the 5-core watertight connector are connected to the wires passing through the electrode protection cavity. The lower end of the 5-core watertight connector is connected to 4 wires to connect the second electric slip ring and the electric slip ring male connector.

2. The method for using the segmented submarine sediment pore water chemical collection and analysis device according to claim 1, characterized in that: The following steps are involved: S1. Assemble the segmented submarine sediment pore water chemical collection and analysis device: Insert the 10-core watertight connector into the lower end of the circuit board compartment. Connect 5 of the 10-core watertight connector to the 5 wires of the 5-core chemical electrode. Connect the 5 wires at the back of the 5-core chemical electrode to the 5-way wiring port at the front of the circuit board. Use the 10-core watertight connector to connect the other 4 cores to two power lines and two CAN buses, bypass the circuit board in the circuit board compartment, and connect to the 4 wires at the bottom of the electric slip ring female socket. Insert the circuit board into the circuit board compartment from the upper end, connect the lower end of the circuit board to the 5 electrode wires of the 10-core watertight connector, and connect the upper end and the remaining 4 wires of the 10-core watertight connector to the female socket of the electric slip ring; Push the female socket of the slip ring from the upper end of the circuit board compartment into the mounting hole of the circuit board compartment; Fix the 10-core copper column part of the 10-core watertight connector with vulcanized rubber; For the 10 cores of the 10-core watertight connector, except for the 5 electrodes connected to the bottom, the wires connected to the remaining 4 cores must pass through the electrode protection cavity of the second section; Screw the upper end of the electrode protection cavity into the tapered thread at the lower end of the circuit board compartment through the tapered thread joint; Insert an electric slip ring into the electrode protection cavity to prevent the wire from spinning and damaging the electrode; Screw the upper end of the adapter chamber into the tapered thread at the lower end of the electrode protection chamber through the tapered thread joint. A 5-core watertight connector is installed at the upper end of the transfer cavity. The connection copper column of the 5-core watertight connector is connected to the wires passing through the electrode protection cavity. The lower end of the 5-core watertight connector is connected to 4 wires to connect the second slip ring and the slip ring male connector. Inject vulcanized rubber through the reserved slip ring cavity in the electrode protection cavity to cover the first slip ring. Lay the whole device down horizontally, and inject vulcanized rubber again through the round hole on the electrode protection cavity to cover the connection between the first electric slip ring and the 10-core watertight connector without covering the electrode; S2. Determine the parameters and sensor modules that need to be measured in this sea trial, and connect other test function devices through the threaded interfaces and wires reserved at the upper and lower ends of the segmented seabed sediment pore water chemical collection and analysis device; S3. Collect and analyze pore water in seafloor sediments: The electrode protection cavity is inserted into the underwater mud layer, so that the pore water can enter the electrode protection cavity through the small holes reserved on the electrode protection cavity under the action of the seabed pressure and contact the electrode. The seabed sample data is collected in real time through the built-in circuit board.

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