Pneumatic throwing type multi-channel self-sinking and floating trace seawater sampling device and pneumatic throwing type multi-channel self-sinking and floating trace seawater sampling method

Abstract

The invention belongs to the technical field of ocean sampling, and provides a pneumatic throwing type multi-channel self-sinking and floating trace seawater sampling device and a pneumatic throwing type multi-channel self-sinking and floating trace seawater sampling method. The device comprises a portable gas cylinder, a casting track, a self-sinking and floating type trace seawater sampler shell, a fixing frame, a pressure sensor, a control bin and the like, and after a seawater sample is collected, a fixing agent can be injected into the seawater sample to fix microorganisms in the seawater sample and the like. And the self-sinking and floating trace seawater sampler is far away from the trace element precipitation influence area of the scientific investigation ship in a pneumatic throwing manner. Meanwhile, the seawater sampling valve with the engineering plastic valve core and the flow channel is innovatively designed, and the seawater sample bin and the fixing agent bin on the inner surface are coated with engineering plastic, so that the interference caused by trace element precipitation of a metal structure of the sampler in the prior art is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of ocean water sampling, and provides a pneumatically cast multi-channel self-sinking and floating trace seawater sampling device and method. Background Art

[0002] Trace elements in seawater are important for understanding the marine ecosystem cycle, ancient marine system and other research, and are involved in all aspects of marine life activities. In order to measure trace elements in seawater, it is necessary to obtain original trace element seawater samples, which will provide important support for studying the distribution, source and exchange of trace elements in the ocean.

[0003] Prior art CN113790927A A deep-sea trace element automatic bottle opening clean water sampling device includes a water sampling device base, a balance base, a hydraulic cylinder, a CTD water sampling bottle, a traction spring, a water sampling device hanging plate, a slot, a water sampling bottle fixing frame and a slot fixing plate. The CTD water sampling bottle is provided with a water outlet and a water inlet, and the water outlet and the water inlet are respectively connected to the clean water pipe after the water sampling device collects the water. The 10,000-meter clean cable connected to the water sampling device hanging plate is wound on the ship-borne clean winch, and the water sampling device is lowered into the seawater through the joint action of the winch and the cable. The prior art can collect trace element seawater at different depths, but it still cannot avoid the influence of trace element precipitation caused by the metal structure of the scientific research ship hull, the water sampling device base, the water sampling bottle fixing frame and the like. The inventor believes that there is a large room for improvement in the prior art. Summary of the invention

[0004] The purpose of the present invention is to collect trace element seawater samples in the ocean, and to use pneumatic casting to throw the self-sinking and floating trace seawater water sampler away from the deck of the scientific research vessel to avoid interference with the seawater samples due to trace elements precipitated from the hull of the scientific research vessel. Secondly, the problem that the water sampler is far away from the scientific research vessel after ejection and the deck winch cannot be used to control the water sampling depth is solved. The self-sinking and floating scheme is used to control the depth of the trace seawater water sampler, and the trace seawater collector is controlled to collect trace seawater samples, and finally the clean cable is pulled by an electric winch to be recovered to the deck of the scientific research vessel. In addition, in order to obtain in-situ seawater samples, a fixative is used to reduce the influence of microorganisms on trace seawater samples during the sampling time.

[0005] The objective of the present invention is achieved through the following technical solutions: The present invention provides a pneumatically cast multi-channel self-sinking and floating trace seawater sampling device and method, including a portable gas cylinder, a projection track, a self-sinking and floating trace seawater sampler, a clean cable, an electric recovery winch, and a manual control valve. The self-sinking and floating trace seawater sampler includes a non-metallic self-sinking and floating trace seawater sampler housing, an internal modular fixing frame, a pressure sensor, a control chamber, a trace element seawater sample chamber, a seawater sampling valve, a driving hydraulic cylinder, a driving hydraulic cylinder control valve, a fixative, a fixative chamber, a fixative control cylinder, a fixative cylinder control valve, a pressure reducing valve, a hydraulic pump, a hydraulic pump motor, a hydraulic pump motor driver, a servo valve, a hydraulic oil cylinder, a trace element seawater sample chamber fixing seat, a fixative chamber fixing seat, a connecting rope fixing ring, a non-metallic seawater inlet, a fixative control valve, and a permeable ceramic filter.

[0006] The operator uses a manual control valve to control the switch of the portable gas cylinder, places the self-sinking and floating trace seawater sampler in the ejection track, and uses the clean cable on the electric recovery winch to connect the self-sinking and floating trace seawater sampler. After the self-sinking and floating trace seawater sampler is ejected, it sinks to the predetermined depth and starts to collect water. After the water collection is completed, it floats to the sea surface, and the operator operates the electric recovery winch to pull the self-sinking and floating trace seawater sampler back to the deck of the research vessel.

[0007] As a preferred method, pneumatic ejection is adopted, which can make the self-sinking and floating trace seawater sampler away from the scientific research ship to avoid the influence caused by the precipitation of metal trace elements from the hull of the scientific research ship. In addition, the electric recovery winch is fixed on the ejection track, and the electric recovery winch is equipped with a clean cable, which is fixed to the connecting rope fixing ring, and also avoids trace element contamination caused by the cable.

[0008] As a preferred method, a control cabin is used for centralized electrical connection to control the pressure sensor, seawater sampling valve, driving hydraulic cylinder control valve, fixative cylinder control valve, hydraulic pump motor driver, servo valve, etc., so as to control seawater sampling and fixative injection. This avoids the waste of space caused by decentralized control, and the centralized electrical control system helps to increase system reliability.

[0009] Preferably, a non-metallic seawater inlet is used to connect a seawater sampling valve, the seawater sampling valve is connected to a trace element seawater sample bin, the trace element seawater sample bin is connected to a fixative control valve, and the fixative control valve is connected to a fixative bin. The trace element seawater sample bin comprises a seawater sample bin piston rod, a seawater sample bin shell, a seawater sample bin piston, a seawater sample bin piston rod sealing ring, a seawater sample cavity, and a seawater sample cavity engineering plastic coating layer. The fixative bin comprises a fixative bin piston rod, a fixative bin shell, a fixative bin piston, a fixative bin piston rod sealing ring, a fixative cavity, and a fixative cavity engineering plastic coating layer. It is avoided that the seawater sample cavity is contaminated by trace elements precipitated from the metal shell and the collected seawater samples are contaminated. At the same time, it is beneficial to connect the control cylinder, which is convenient for realizing servo control and controlling the amount and time of seawater collection samples.

[0010] Preferably, the internal modular fixing frame is fixed inside the housing of the self-sinking and floating trace seawater sampler. The pressure sensor is fixed outside the housing of the self-sinking and floating trace seawater sampler. The trace element seawater sample chamber is fixed on the trace element seawater sample chamber fixing seat, and the trace element seawater sample chamber fixing seat is fixed on the internal modular fixing frame. The fixative chamber is fixed on the fixative chamber fixing seat, and the fixative chamber fixing seat is fixed on the internal modular fixing frame. The modular fixing method is adopted to improve the system integration and facilitate the expansion of the number of sampling channels of the trace seawater collector.

[0011] Preferably, the driving hydraulic cylinder is connected to the driving hydraulic cylinder control valve through a hydraulic pipe, the driving hydraulic cylinder control valve is connected to the pressure reducing valve through a hydraulic pipe, and the pressure reducing valve is connected to the hydraulic pump through a hydraulic pipe. The fixative control cylinder is connected to the fixative control valve through a hydraulic pipe, and the fixative control valve is connected to the pressure reducing valve through a hydraulic pipe. The hydraulic oil cylinder is connected to the servo valve through a hydraulic pipe, and the servo valve is connected to the hydraulic pump through a hydraulic pipe. The hydraulic pump is connected to the hydraulic pump motor. The fixative tank piston rod is connected to the fixative control cylinder. The seawater sample tank piston rod is connected to the driving hydraulic cylinder. The self-sinking and floating trace seawater sampling control system can use the hydraulic control system to control the collection and fixation of seawater samples, and the control is simple and the reliability is high.

[0012] Preferably, the hydraulic oil cylinder is connected to the servo valve through a hydraulic pipe, and the servo valve is connected to the hydraulic pump through a hydraulic pipe. The hydraulic pump is connected to the hydraulic pump motor. The pressure sensor is fixed on the outside of the housing of the self-sinking and floating trace seawater sampler. The control chamber controls the servo valve by receiving the pressure sensor signal, and drives the hydraulic oil cylinder to adjust its own volume, thereby adjusting the buoyancy of the self-sinking and floating trace seawater sampler to achieve depth adjustment.

[0013] The present invention provides a pneumatically cast multi-channel self-sinking and floating trace seawater sampling device and method, which can collect trace seawater samples at multiple depths far away from the scientific research vessel, can solve the sampling influence caused by the precipitation of metal trace elements in the scientific research vessel itself, and can solve the influence caused by the precipitation of trace elements in the metal material of the water sampler bracket, and solve the problem of sampling trace seawater at multiple depths. And it has the following beneficial effects, avoiding the problem of trace element pollution caused by the scientific research vessel and its own equipment, being able to control the sampling amount and sampling time of trace seawater samples, and being able to control the sampling depth of trace seawater samples. In order to avoid the influence of microbial activity on trace seawater samples, a fixative is used, and the injection amount and injection time of the fixative can be controlled at the same time.

[0014] In addition, the use of electric recovery winches and clean cables can ensure the smooth recovery of the self-sinking and floating trace seawater sampler. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of a pneumatically cast multi-channel self-sinking and floating trace seawater sampling device; Figure 2 A cross-sectional schematic diagram of a self-sinking and floating trace seawater sampler of a pneumatically cast multi-channel self-sinking and floating trace seawater sampling device and method; Figure 3 A schematic diagram of a pneumatically cast multi-channel self-sinking and floating trace seawater sampling device and method; Figure 4 A cross-sectional structural diagram of a pneumatically cast multi-channel self-sinking and floating trace seawater sampling device and method, in which a trace element seawater sample chamber and a driving hydraulic cylinder are connected; Figure 5 The present invention is a cross-sectional structural diagram of the connection between a fixative bin and a fixative control cylinder of a pneumatically cast multi-channel self-sinking and floating trace seawater sampling device and method.

[0017] Description of reference numerals: 1 portable gas cylinder, 2 ejection track, 3 self-sinking and floating trace seawater sampler, 4 clean cable, 5 electric recovery winch, 6 manual control valve, 7 scientific research ship, 8 sea surface. Among them, 2 ejection track includes 21 guide rail, 22 folding support leg, 23 slider. Among them, 3 self-sinking and floating trace seawater water samplers include 31 non-metallic self-sinking and floating trace seawater water sampler shell, 32 internal modular fixing frame, 33 pressure sensor, 34 control chamber, 35 trace element seawater sample chamber, 36 seawater sampling valve, 37 driving hydraulic cylinder, 38 driving hydraulic cylinder control valve, 39 fixative, 310 fixative chamber, 311 fixative control cylinder, 312 fixative cylinder control valve, 313 pressure reducing valve, 314 hydraulic pump, 315 hydraulic pump motor, 316 hydraulic pump motor driver, 317 servo valve, 318 hydraulic oil cylinder, 319 trace element seawater sample chamber fixing seat, 320 fixative chamber fixing seat, 321 connecting rope fixing ring, 322 non-metallic seawater inlet, 323 permeable ceramic filter, 324 connecting screw, 325 internal modular fixing frame support rod. The trace element seawater sample chamber 35 comprises a seawater sample chamber piston rod 351, a seawater sample chamber housing 352, a seawater sample chamber piston 353, a seawater sample chamber piston rod sealing ring 354, a seawater sample chamber 355, and a seawater sample chamber engineering plastic coating layer 356. The fixative chamber 310 comprises a fixative chamber piston rod 3101, a fixative chamber housing 3102, a fixative chamber piston 3103, a fixative chamber piston rod sealing ring 3104, a fixative chamber 3105, and a fixative chamber engineering plastic coating layer 3106. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Embodiment 1 like Figure 1As shown, a pneumatic throwing type multi-channel self-sinking and floating trace seawater sampling device and method, 3 self-sinking and floating trace seawater water samplers are placed on the 21 guide rails of the 2 ejection tracks, 1 portable gas cylinder is installed on the 2 ejection tracks, 5 electric recovery winches are installed on the 2 ejection tracks, 6 manual control valves are installed on the 2 ejection tracks, 4 clean cables connect the 5 electric recovery winches and the 3 self-sinking and floating trace seawater water samplers, and the 4 clean cables are fixed to the 321 connecting rope fixing rings. The 22 folding support legs of the 2 ejection tracks are opened, and the 3 self-sinking and floating trace seawater water samplers are in contact with the slider 23 of the 2 ejection tracks. The operator operates and controls the 6 manual control valves to control the 1 portable gas cylinder switch. When the operator controls the 6 manual control valves to open the 1 portable gas cylinder switch, the 23 sliders are pushed by the high-pressure gas to move, driving the 3 self-sinking and floating trace seawater water samplers to move along the 21 guide rails, and ejecting the guide rails. The 5 electric winches are in the off-disk state at this time, and the 4 clean cables are taken out by the 3 self-sinking and floating trace seawater water samplers.

[0020] like Figure 2 As shown, a pneumatic throwing type multi-channel self-sinking and floating trace seawater sampling device and method, comprising 31 non-metal self-sinking and floating trace seawater water sampling device shell, 32 internal modular fixing frame, 33 pressure sensor, 34 control chamber, 35 trace element seawater sample chamber, 36 seawater sampling valve, 37 driving hydraulic cylinder, 38 driving hydraulic cylinder control valve, 39 fixative, 310 fixative chamber, 311 fixative control cylinder, 312 fixative cylinder control valve, 313 pressure reducing valve, 314 hydraulic pump, 315 hydraulic pump motor, 316 hydraulic pump motor driver, 317 servo valve, 319 trace element seawater sample chamber fixing seat, 320 fixative chamber fixing seat, 321 connecting rope fixing ring, 322 non-metal seawater inlet, 323 permeable ceramic filter, 324 connecting screw, 325 internal modular fixing frame support rod. 33 pressure sensor can sense external water pressure signal and convert it into depth signal. The seawater sampling valve 36 controls the entry of seawater samples, and the permeable ceramic filter 323 can filter solid impurities in seawater. The control chamber 34 controls the 38 driving hydraulic cylinder control valve, 312 fixative cylinder control valve, 316 hydraulic pump motor driver, and 317 servo valve, thereby controlling the actions of the 37 driving hydraulic cylinder, 311 fixative control cylinder, 315 hydraulic pump motor, 318 hydraulic oil cylinder and other actuators to achieve seawater sampling, fixation, and depth adjustment.

[0021] like Figure 3As shown, ① is that the operator arranges and fixes 2 ejection tracks on the deck of the research vessel 7, opens the folding support legs 22, places 3 self-sinking and floating trace seawater samplers on the 21 guide rails of the 2 ejection tracks, and 1 portable gas cylinder is installed on the 2 ejection tracks. ② is that the operator operates 6 manual control valves to open the 1 portable gas cylinder switch, and 3 self-sinking and floating trace seawater samplers are ejected by the 2 ejection tracks. ③ is that 3 self-sinking and floating trace seawater samplers enter the seawater, 33 pressure sensors obtain water pressure signals, convert them into depth signals, and 34 control cabin controls 316 hydraulic pump motor driver to drive 315 hydraulic pump motor to drive 314 hydraulic pump to work. The 34 control chamber controls the 317 servo valve to work, driving the 318 hydraulic oil naan to reduce its volume, so that the 3 self-sinking and floating trace seawater sampler has its own buoyancy reduced and begins to sink. When it reaches the specified depth, the 34 control chamber controls the 317 servo valve to work, driving the 318 hydraulic oil naan to increase its volume, so that the 3 self-sinking and floating trace seawater sampler has its own buoyancy increased and is suspended within the specified depth range. At this time, the 34 control chamber controls the 36 seawater sampling valve to open, controls the 38 driving hydraulic cylinder control valve to open, and the 37 driving hydraulic cylinder drives the seawater sample chamber piston rod 351 in the 35 trace element seawater sample chamber to move, thereby sucking in seawater. The 34 control chamber controls the 312 fixative cylinder control valve to open, and the 311 fixative control cylinder drives the fixative chamber piston 3103 to move, injecting the 39 fixative into the 35 trace element seawater sample chamber. The 34 control chamber controls the 36 seawater sampling valve to close. In this way, the trace element seawater sample collection of one channel is completed.

[0022] The above embodiments and / or implementation methods are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any form. Any technical personnel in this field may make slight changes to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

Claims

1. A pneumatically cast multi-channel self-sinking and floating trace seawater sampling device, comprising a portable gas cylinder (1), a casting track (2), a self-sinking and floating trace seawater sampler (3), a clean cable (4), an electric recovery winch (5), and a manual control valve (6), wherein the self-sinking and floating trace seawater sampler (3) comprises a non-metallic self-sinking and floating trace seawater sampler housing (31), an internal modular fixing frame (32), a pressure sensor (33), a control chamber (34), a trace element seawater sample chamber (35), a seawater sampling valve (36), a driving hydraulic cylinder (37), a driving hydraulic cylinder control valve (38), a fixative (39), and a fixative chamber (310). ), a fixative control cylinder (311), a fixative cylinder control valve (312), a pressure reducing valve (313), a hydraulic pump (314), a hydraulic pump motor (315), a hydraulic pump motor driver (316), a servo valve (317), a hydraulic oil cylinder (318), a trace element seawater sample chamber fixing seat (319), a fixative chamber fixing seat (320), a connecting rope fixing ring (321), a non-metallic seawater inlet (322), a permeable ceramic filter (323), a connecting screw (324), an internal modular fixing frame support rod (325), and a projection track (2) composed of a guide rail (21), a folding support leg (22), and a slider (23).

2. The pneumatically cast multi-channel self-sinking and floating trace seawater sampling device according to claim 1, characterized in that: The portable gas cylinder (1) serves as a high-pressure gas source to provide high-pressure gas to the ejection track (2). The self-sinking and floating trace seawater sampler (3) is placed in the ejection track (2). The portable gas cylinder (1) is switched on and off using a manual control valve (6), and the ejection track (2) ejects the self-sinking and floating trace seawater sampler (3) to a sea surface far away from the scientific research vessel.

3. The pneumatically cast multi-channel self-sinking and floating trace seawater sampling device according to claim 1, characterized in that: The electric recovery winch (5) is fixed on the ejection track (2). A clean cable (4) is installed on the electric recovery winch (5). The clean cable (4) is fixed to a connecting rope fixing ring (321). The connecting rope fixing ring (321) is connected to a non-metallic self-sinking and floating trace seawater sampler housing (31) through a thread.

4. The pneumatically cast multi-channel self-sinking and floating trace seawater sampling device according to claim 1, characterized in that: The control chamber (34) is electrically connected to the pressure sensor (33), the seawater sampling valve (36), the driving hydraulic cylinder control valve (38), the fixative cylinder control valve (312), the hydraulic pump motor driver (316), and the servo valve (317).

5. The pneumatically cast multi-channel self-sinking and floating trace seawater sampling device according to claim 1, characterized in that: The seawater inlet (322) is connected to the seawater sampling valve (36), the seawater sampling valve (36) is connected to the trace element seawater sample chamber (35), the trace element seawater sample chamber (35) is connected to the fixative control valve (323), and the fixative control valve is connected to the fixative chamber (310).

6. The pneumatically cast multi-channel self-sinking and floating trace seawater sampling device according to claim 1, characterized in that: The driving hydraulic cylinder (37) is connected to the driving hydraulic cylinder control valve (38) via a hydraulic pipe, the driving hydraulic cylinder control valve (38) is connected to the pressure reducing valve (313) via a hydraulic pipe, the pressure reducing valve is connected to the hydraulic pump (314) via a hydraulic pipe, the fixative control cylinder (311) is connected to the fixative control valve (312) via a hydraulic pipe, the fixative control valve is connected to the pressure reducing valve (313) via a hydraulic pipe, the hydraulic oil cylinder (318) is connected to the servo valve (317) via a hydraulic pipe, the servo valve (317) is connected to the hydraulic pump (314) via a hydraulic pipe, and the hydraulic pump (314) is connected to the hydraulic pump motor (315).

7. The pneumatically cast multi-channel self-sinking and floating trace seawater sampling device according to claim 1, characterized in that: The internal modular fixing frame (32) is fixed inside the self-sinking and floating trace seawater sampler housing (31), the pressure sensor (33) is fixed outside the self-sinking and floating trace seawater sampler housing (31), the trace element seawater sample chamber (35) is fixed on the trace element seawater sample chamber fixing seat (319), the trace element seawater sample chamber fixing seat (319) is fixed on the internal modular fixing frame (32), the fixative chamber (310) is fixed on the fixative chamber fixing seat (320), the fixative chamber fixing seat (320) is fixed on the internal modular fixing frame (32), the driving hydraulic cylinder (37) is fixed on the trace element seawater sample chamber via a connecting screw (325), the fixative control cylinder (311) is fixed on the fixative chamber (310) via a screw, the hydraulic pump (314) is fixed on the internal modular fixing frame (32), and the hydraulic pump motor (315) is fixed on the hydraulic pump.

8. The pneumatically cast multi-channel self-sinking and floating trace seawater sampling device according to claim 1, characterized in that: The non-metallic seawater inlet (322) is provided with a water-permeable ceramic filter screen (324).

9. The pneumatically cast multi-channel self-sinking and floating trace seawater sampling device according to claim 1, characterized in that: The trace element seawater sample chamber (35) comprises a seawater sample chamber piston rod (351), a seawater sample chamber housing (352), a seawater sample chamber piston (353), a seawater sample chamber piston rod sealing ring (354), a seawater sample chamber (355), and a seawater sample chamber engineering plastic coating layer (356); the seawater sample chamber piston rod (351) is connected to a driving hydraulic cylinder (37).

10. The pneumatically cast multi-channel self-sinking and floating trace seawater sampling device according to claim 1, characterized in that: The fixative bin (310) comprises a fixative bin piston rod (3101), a fixative bin housing (3102), a fixative bin piston (3103), a fixative bin piston rod sealing ring (3104), a fixative chamber (3105), and a fixative chamber engineering plastic coating layer (3106). The fixative bin piston rod (3101) is connected to a fixative control cylinder (311), and a fixative (39) is placed in the fixative chamber (3105). A hydraulic pump motor driver (316) is installed in the control bin (34).

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