CN117538098A

CN117538098A - Large-volume water sample collection system and control method

Info

Publication number: CN117538098A
Application number: CN202311464596.6A
Authority: CN
Inventors: 高金连; 杨淑雨
Original assignee: Xiamen Qixiang Technology Co ltd
Current assignee: Xiamen Qixiang Technology Co ltd
Priority date: 2023-11-06
Filing date: 2023-11-06
Publication date: 2024-02-09

Abstract

The invention provides a large-volume water sample collection system and a control method, wherein a sampling barrel is sunk to a near bottom layer of a sea area to be detected through a balancing weight, the balancing weight is released through a control unit, a releaser is controlled to release the balancing weight, a floating ball device drives a sampling device to float upwards, so that the recovery of the sampling device is realized, the problems that the length is limited and the recovery is difficult when a cable is used for carrying out the traditional sampling are solved, when a depth sensing module detects a specified depth value, a control unit controls a second limiting mechanism to release a second floating ball, the second floating ball pulls a first limiting mechanism to open a sealing mechanism, and the sealing mechanism seals a water inlet to finish the water sample collection, so that the purpose of accurately and deeply collecting the water sample can be realized, the water inlets are arranged at two ends of a sampling barrel body when the sampling is not carried out, and the sampling barrel body is in an open state.

Description

Large-volume water sample collection system and control method

Technical Field

The invention relates to a large-volume water sample collection system and a control method, which are applied to the technical field of submarine sampling.

Background

In recent years, the continuous aggravation of marine environmental pollution causes great pressure on marine ecological environment. The national emphasis on marine environment protection is strengthened, the ocean development strategy is supported, and the rapid development of ocean water quality monitoring is promoted. The marine water quality monitoring sampling types are classified into the following three types according to depth: (1) surface layer sampling: surface sampling refers to collecting a water sample near the surface of seawater. This sampling method is suitable for shallow sea areas, and the sampling depth is typically between 0 and 2 meters. (2) Middle layer sampling: middle layer sampling refers to collecting a water sample of the middle layer of seawater. The sampling method is suitable for deep sea areas, and the sampling depth is generally between 2 and 200 meters. (3) And (3) bottom layer sampling: the bottom sampling refers to collecting a water sample of the seawater bottom layer. The sampling method is suitable for deep sea areas, and the sampling depth is generally between 200 and 5000 meters. Traditional marine environment monitoring needs to be carried out the sampling with the water sampler through cable deep into the seabed, and the defect of this sampling mode is: firstly, the cable is collected in a cable throwing mode, the throwing distance is limited, under general conditions, the cable is released and thrown into the sea bottom through devices such as a duplex winding drum, and the length of the cable accommodated by the devices such as the duplex winding drum is limited, so that the depth of a collector thrown into the sea bottom is limited, the cable is not suitable for collecting the sea water near the bottom layer, and when the sampling device is recovered, the cable is wound around a sea barrier to cause recovery difficulty, secondly, water cannot be collected at a specified depth or the precision of water collection at the specified depth is poor, thirdly, a general sampling barrel adopts a closed barrel body, the pressure resistance of the closed barrel body on the sea bottom is limited, fourthly, the accommodating volume of the existing water sample collecting device is limited, the situation that the sample amount collected once is insufficient usually occurs, the number of data sets is possibly too small, the error is large, or equipment needs to be thrown again for collection, the cost is increased, and the efficiency is low, so that the water sample collecting system and the control method for collecting the sea water near the bottom layer are designed.

Disclosure of Invention

The invention provides a large-volume water sample collection system and a control method, which can effectively solve the problems.

The invention is realized in the following way:

a high volume water sample collection system comprising:

the floating ball device comprises a plurality of first floating balls which are connected in sequence;

the sampling device is arranged below the floating ball device and comprises a sampling barrel body, water inlets are formed in two ends of the sampling barrel body, a sealing mechanism for sealing the water inlets is arranged in the sampling barrel body, a first limiting mechanism for limiting movement of the sealing mechanism is arranged in the sealing mechanism, the first limiting mechanism is connected with a second floating ball arranged outside the sampling barrel body, the second floating ball is fixed on the outer side wall of the sampling barrel body through the second limiting mechanism, a depth sensing module is arranged on the sampling barrel body and is electrically connected with the second limiting mechanism, and the second limiting mechanism is in communication connection with the control unit;

the release device is arranged below the sampling device and comprises a release device and a balancing weight arranged below the release device and connected with the release device, the release device is in communication connection with the control unit, and the gravity of the balancing weight is greater than the buoyancy provided by the floating ball device;

when the depth sensing module detects the appointed depth value, the second floating ball is controlled by the control unit to release the second floating ball, the second floating ball pulls the first limiting mechanism to open the sealing mechanism, the sealing mechanism seals the water inlet to finish water sample collection, the releaser is controlled by the control unit to release the balancing weight, and the floating ball device drives the sampling device to float upwards to realize recovery of the sampling barrel.

A control method of a large-volume water sample collection system comprises the following steps:

s10: releasing the water sample collecting system to enter a sea area to be collected;

s20: when the needed sea area depth information transmitted by the depth sensing module is acquired, a second limiting mechanism is opened so as to release a second floating ball;

s30: the second floating ball pulls the first limiting mechanism so as to open the sealing cover mechanism to seal the water inlet, and the collection of seawater is completed;

s40: the releaser is controlled to release the balancing weight, so that the sampling device floats out of the sea surface through the buoyancy provided by the floating ball device, and the water sample collecting system is recovered.

The beneficial effects of the invention are as follows: according to the invention, the sampling barrel is sunk to the near bottom layer of the sea area to be tested, the releaser is controlled by the control unit to release the balancing weight, the floating ball device drives the sampling device to float upwards so as to realize the recovery of the sampling device, the problems that the length is limited and the recovery is difficult when the traditional sampling is carried out by using a cable for recovery are solved, when the depth sensing module detects the value of the designated depth, the second floating ball is controlled by the control unit to release the second floating ball, the first limiting mechanism is pulled by the second floating ball so as to open the sealing mechanism, the sealing mechanism seals the water inlet so as to finish the water sample collection, the purpose of accurately and deeply collecting the water sample can be realized, the error value of the deep water sampling is reduced, the water inlets are arranged at the two ends of the sampling barrel body and are in an open state, the purpose of the arrangement is to reduce the pressure of the bottom seawater on the sampling barrel body relative to the closed barrel body, the sampling device with a large holding volume is selected by calculating the buoyancy of the first floating ball and the weight of different sampling barrels and the weight of the balancing weight, the sampling device is convenient for carrying out the detection of sampling large volume sample collection, the sample collection is prevented from being enough, the sample collection is prevented from being carried out, the problem is not caused by the large sample collection error is reduced, or the situation is caused, and the experiment is not needed to be reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a connection structure of each mechanism according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a sampling device according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of connection between the second limiting mechanism and the second floating ball according to an embodiment of the present invention.

Fig. 4 is an exploded view of a sampling device according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of a sampling barrel body according to an embodiment of the present invention.

Fig. 6 is a top view of a sampling bucket body according to an embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view of the structure at A-A in fig. 6.

Fig. 8 is a schematic cross-sectional structure at B-B in fig. 6.

Fig. 9 is a schematic view of a sliding rod according to an embodiment of the present invention.

Fig. 10 is a schematic view of an open fixed cover plate according to an embodiment of the present invention.

Fig. 11 is a schematic structural view of a first limiting mechanism according to an embodiment of the present invention.

Fig. 12 is a top view of a first stop mechanism according to an embodiment of the present invention.

Fig. 13 is a schematic view of a sectional structure at C-C in fig. 12.

Fig. 14 is a schematic view of a sectional structure at D-D in fig. 12.

Fig. 15 is an exploded view of a first limiting mechanism according to an embodiment of the present invention.

Fig. 16 is an enlarged schematic view of the structure at B in fig. 8.

Fig. 17 is a schematic structural diagram of an annular seal ring according to an embodiment of the present invention.

Fig. 18 is a schematic structural view of a fixed cover plate according to an embodiment of the present invention.

The drawings are identified as follows:

10. a floating ball device; 11. a first floating ball;

20. a sampling device; 21. a sampling barrel body; 22. a capping mechanism; 221. a fixed bracket; 222. a mounting column; 2221. a first accommodation hole; 2222. a limit groove; 223. a slide bar; 2231. a second accommodation hole; 2232. a sliding groove group; 22321. a first sliding groove; 22322. a second sliding groove; 224. a first spring; 225. a cover plate; 23. a first limiting mechanism; 231. an outer housing; 2311. a sliding bump; 2312. a third accommodation hole; 2313. a placement groove; 2314. a chute; 232. a movable shaft; 2321. a support rod; 2322. positioning a sensor; 2323. a second spring; 233. a connecting rod; 234. a first link; 235. a second link; 2351. arc tooth parts; 236. an abutment block; 2361. a straight tooth portion; 24. a second floating ball; 241. a Kevlar rope; 242. a pull ring; 25. a second limiting mechanism; 251. driving a steering engine; 252. releasing the buckle; 26. a depth sensing module; 27. an annular clamping groove cover plate; 271. a fixing slot; 272. a limit baffle; 273. a second magnetic attraction part; 274. positioning a detector; 28. a pressure housing; 281. a support column; 29. fixing the cover plate; 290. an annular mounting groove; 2901. a key sensing module; 291. a first magnetic attraction part; 292. an annular seal ring; 2921. an assembly groove; 2922. a mounting block; 293. a filter layer;

30. a release device; 31. a release; 32. balancing weight;

40. an observation device; 41. single point acoustic current meter.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.

In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The invention can realize the appointed depth sampling and is convenient for recovery, compared with a nuclear submarine or a depth seawater collection robot with higher automation degree, the invention has lower cost, and can select a proper barrel volume according to the weight of the calculation sampling device 20 and the buoyancy of the floating ball device 10, thus the invention is a seawater adoption device suitable for the near bottom layer. Referring to fig. 1, a high volume water sample collection system comprising: the device comprises a floating ball device 10, a sampling device 20 and a release device 30, wherein the floating ball device 10 comprises a plurality of first floating balls 11 which are connected in sequence; the first floating ball 11 is connected through a kevlar rope 241, the kevlar rope 241 (kevlar) has extremely high strength, is more than 28 g/denier, is 5-6 times of high-quality steel, has modulus of 2-3 times of steel or glass fiber, has toughness of 2 times of steel, and has weight of only 1/5 of steel, and is used for fixing the first floating ball 11, preventing the first floating ball 11 from falling off in the use process, the floating ball device 10 has the function of providing buoyancy for the sampling device 20, in the embodiment, the first floating ball 11 adopts a deep sea water pressure resistant floating ball, and the floating ball has strong water pressure resistant capability, and has the characteristics of light weight, impact resistance, corrosion resistance and the like.

Referring to fig. 1-8, the sampling device 20 is disposed below the floating ball device 10, and is connected to the floating ball device 10 through a kevlar rope 241. Referring to FIGS. 4-8, the sampling device 20 comprises a sampling barrel body 21, wherein water inlets are formed at two ends of the sampling barrel body 21 and are in an open state, so that the pressure of the bottom seawater on the sampling barrel body is reduced, the pressure resistance of the bottom seawater relative to the closed barrel body is stronger, and the ground standard atmospheric pressure is equal to 1.0135X10A 5 Pa and is equal to 1.03323 kg/cm 2, namely, the pressure of 76 cm Hg. If the density of seawater is 1.03 g/cm 3, one atmosphere corresponds to a water depth of 10.03 meters according to the hydrostatic formula. In other words, every time the water depth is increased by 10 meters, about one atmosphere is increased, the sea water pressure in the sea area with the water depth of 300 meters is 30 atmospheres, and if a closed barrel body is used, the pressure difference between the inside and the outside of the barrel body is large because the cavity is free of sea water, and the deformation and burst of the barrel body can be caused. And both ends open-ended sampling bucket body 21 is the circulation state, in the sinking process, can reduce the resistance of sea water, makes the sinking rate faster, and efficiency is higher to the staving of circulation state can reduce the error, be provided with in the sampling bucket body 21 be used for right the closing cap mechanism 22 of shutoff is carried out to the water inlet, be provided with in the closing cap mechanism 22 and be used for limiting closing cap mechanism 22 removes first stop gear 23, first stop gear 23 connects the second floater 24 that sets up in sampling bucket body 21 outside, second floater 24 is fixed in through second stop gear 25 on the sampling bucket body 21 lateral wall.

Referring to fig. 3, a symmetrical supporting column 281 is disposed on the outer side wall of the pressure-proof housing 28 on the outermost layer along the axial direction, the second floating ball 24 is connected with the movable shaft 232 through a kev pull rope 241, a pull ring 242 is disposed on the kev pull rope 241, the second limiting mechanism 25 includes a driving steering engine 251 disposed on the supporting column 281, the driving steering engine 251 drives a release button 252, and the release button 252 is connected with the pull ring 242 to limit the second floating ball 24.

The sampling barrel body 21 is provided with a depth sensing module 26, the depth sensing module 26 is used for detecting depth information of the arrival of the sampling barrel, in this embodiment, the depth sensing module 26 adopts an underwater depth sensor M74, in other embodiments, the depth sensing module 26 may also be a pressure sensor, the depth sensing module 26 is electrically connected with the second limiting mechanism 25, and the second limiting mechanism 25 is in communication connection with the control unit. The invention further comprises an observation device 40 arranged below the sampling device 20, wherein the observation device 40 is a single-point acoustic current meter 41, and the single-point acoustic current meter 41 is used for observing single-point current near the bottom layer.

Referring to fig. 7-8, the sampling device 20 further includes annular clamping groove cover plates 27 disposed at two axial ends of the sampling barrel body 21, one end of the annular clamping groove cover plates 27 is provided with a plurality of fixing clamping grooves 271 along the axis of the annular clamping groove cover plates, the sampling barrel body 21 includes a plurality of layers of pressure-proof shells 28, in this embodiment, the sampling barrel body 21 includes 3 layers of pressure-proof shells 28, the pressure-proof shells 28 are disposed in the fixing clamping grooves 271, the pressure-proof shells 28 of the present invention adopt an arc barrel structure, the curvature of the shells is increased, the shells can easily slide relatively, and the release of internal stress is facilitated, so that the pressure-proof shells have good bearing capacity. By adopting a laminated structure, each layer of pressure-resistant shell 28 can fully select different materials according to the curvature radius and the use requirement, fully utilize the material parameters and the performance and reduce the design difficulty of the materials. With the laminated structure, each layer of pressure housing 28 is thinner to facilitate manufacturing and welding of each layer of housing. The other end of the annular clamping groove cover plate 27 is provided with a fixed cover plate 29 which is rotationally connected with the clamping groove cover plate.

Referring to fig. 1, the releasing device 30 is disposed below the sampling device 20, and includes a releaser 31 and a weight block 32 disposed below the releaser 31 and connected to the releaser 31, wherein the releaser 31 is communicatively connected to the control unit, and the weight of the weight block 32 is greater than the buoyancy provided by the floating ball device 10;

when the depth sensing module 26 detects a specified depth value, for example, the target depth of the current throwing is 250m, and when the depth sensing module 26 detects that the depth value is 250m, the control unit controls the second limiting mechanism 25 to release the second floating ball 24, the second floating ball 24 pulls the first limiting mechanism 23 to open the cover mechanism 22, and the cover mechanism 22 seals the water inlet to finish water sample collection, so that the purpose of accurately collecting the water sample in depth can be achieved. Reducing the error value of deep water collection. The releaser 31 is controlled by the control unit to release the balancing weight 32, and the floating ball device 10 drives the sampling device 20 to float upwards, so that the recovery of the sampling barrel is realized. According to the invention, the sampling device 20 is sunk to the near bottom layer of the sea area to be tested through the balancing weight 32, the releaser 31 is controlled by the control unit to release the balancing weight 32, the floating ball device 10 drives the sampling device 20 to float upwards, so that the recovery of the sampling device 20 is realized, and the problems of limited length and difficult recovery when the traditional sampling is carried out by using a cable are solved.

Referring to fig. 5 to 9, the capping mechanism 22 includes a fixing bracket 221 provided on the inner wall of the sampling tub body 21, and the fixing bracket 221 is configured to strengthen the inner structure of the sampling tub body 21 in addition to being used as a bracket. The distance of the fixed support 221 with the water inlets at both ends is equal, the fixed support 221 is provided with the erection column 222 along the both ends central symmetry of sampling bucket body 21 axial lead direction, set up first accommodation hole 2221 in the erection column 222, the slide bar 223 has been received to first accommodation hole 2221, slide bar 223 pass through first spring 224 with the slide bar bottom is connected, slide bar 223 is kept away from first spring 224 one end is connected to the blanking cover 225. The sliding rod 223 slides in the first accommodating hole 2221 by the elastic force of the first spring 224, so that the cover plate 225 seals the water inlets at the two ends of the sampling barrel body 21.

Referring to fig. 9, the first receiving hole 2221 is symmetrically provided with a limiting groove 2222 near one end of the fixed bracket 221, the sliding rod 223 is radially provided with a second receiving hole 2231, the sliding rod 223 is provided with a sliding groove set 2232 penetrating the second receiving hole 2231, the sliding groove set 2232 includes a first sliding groove 22321 and a second sliding groove 22322 which are communicated, and the first sliding groove 22321 is disposed at one end of the sliding rod 223 near the fixed bracket 221.

Referring to fig. 10, a first magnetic attraction portion 291 is disposed on the fixed cover 29, a limit baffle 272 is disposed on one side of the annular slot cover 27, the limit baffle 272 is fixedly connected with the slot cover 27 by welding, a second magnetic attraction portion 273 is disposed on the limit baffle 272, the first magnetic attraction portion 291 and the second magnetic attraction portion 273 are magnetically attracted and fixed, the first magnetic attraction portion 291 is an arc-shaped magnetic block disposed on an outer ring of an upper end surface of the fixed cover 29, the second magnetic attraction portion 273 is an arc-shaped magnet disposed on a lower end surface of the limit stop 272 and the first magnetic attraction portion 291, when the fixed cover 29 slides to cover the sampling bucket body 21, the first magnetic attraction portion 291 and the second magnetic attraction portion 273 are magnetically attracted and fixed to fix the fixed cover 29, because the invention extends to two ends through the cover plate 225 to realize sealing of the sampling bucket body 21, if a traditional upper and lower cover closing type is adopted, the gap is possibly generated between the bucket cover body and the bucket cover body 21, and the cover plate 29 can be easily fixed by the invention, and the cover plate can be closed by the invention, and the cover plate can be easily fixed by the cover plate 21.

Referring to fig. 11-16, the first limiting mechanism 23 includes an outer housing 231, a sliding protrusion 2311 adapted to the second sliding groove 22322 is disposed on a side wall of the outer housing 231, the sliding protrusion 2311 is disposed in the second sliding groove 22322, so that the first limiting mechanism 23 slides in the second accommodating hole 2231, stability of sliding of the outer housing 231 in the second sliding groove 22322 is improved, and since the first limiting mechanism 23 needs to be pulled by the second floating ball 24 to open the capping mechanism 22, if the first limiting mechanism is blocked due to poor stability of the outer housing 231 sliding in the second sliding groove 22322, the sampling device 20 cannot collect water samples, resulting in failure of collection work and consumption of manpower and material resources. The top of the outer housing 231 is provided with a third accommodating hole 2312, the third accommodating hole 2312 is internally provided with a moving shaft 232, one end of the moving shaft 232 is connected with a second floating ball 24, the bottom of the outer housing 231 is provided with a placement groove 2313 penetrating through the side wall of the outer housing 231, the placement groove 2313 is communicated with the third accommodating hole 2312, the other end of the moving shaft 232 penetrates through the third accommodating hole 2312 to be inserted into the middle of the connecting rod 233, two ends of the connecting rod 233 are connected with a first connecting rod 234, the other end of the first connecting rod 234 is connected with a second connecting rod 235, one end, far away from the first connecting rod 234, of the second connecting rod 235 is provided with an arc-shaped tooth 2351, the side wall of the placement groove 2313 is provided with a transverse sliding groove 2314, a slidable abutting block 236 is arranged in the sliding groove 2314, the upper end surface of the abutting block 236 is provided with a straight tooth 2361, and the straight tooth 2361 is meshed with the arc-shaped tooth 2351. Referring to fig. 9, the first sliding groove 22321 has a width dimension L1, the second sliding groove 22322 has a width dimension L2, where L1 > L2, the first sliding groove 22321 is provided so that the abutment block 236 passes through the first sliding groove 22321 and is disposed in the limit groove 2222 to fix the first limit mechanism 23, the sliding rod 223 is prevented from sliding to open the cover mechanism 22, and the second sliding groove 22322 is provided so that the first limit mechanism 23 can slide stably, and therefore, the width dimension L1 of the first sliding groove 22321 is larger than the width dimension L2 of the second sliding groove 22322 to enable the first limit mechanism 23 to slide stably and also to fix the first limit mechanism 23; the purpose of communicating the first and second slide grooves 22321 and 22322 is to facilitate processing and to enable stable sliding of the first stopper mechanism 23.

The support rods 2321 are symmetrically arranged on the side wall of the movable shaft 232, a second spring 2323 is sleeved on the movable shaft 232, one end of the second spring 2323 is connected with the side wall of the top of the third accommodating hole 2312, the other end of the second spring 2323 abuts against the support rods 2321, the second spring 2323 is used for enabling the abutting block 236 to be in a state of extending out of the outer shell 231, and the situation that before the second floating ball 24 is opened, the first limiting mechanism 23 fails due to the resistance of seawater, so that the capping mechanism 22 caps the sampling barrel body 21 in advance, and the collected seawater depth error is large is prevented.

Referring to fig. 8-11, a positioning sensor 2322 is disposed on the moving shaft 232, a positioning detector 274 is disposed on the annular clamping groove cover plate 27, the positioning detector 274 is in communication connection with the control unit, when the positioning detector 274 detects a signal of the positioning sensor 2322, the signal is sent to the control unit, and in order to consider the cost, a high-definition camera is not disposed to detect whether the capping mechanism 22 is opened or not, so that the positioning detector 274 detects the signal of the positioning sensor 2322 on the moving shaft 232 to determine whether the first limiting mechanism 23 opens the capping mechanism 22 under the buoyancy action of the second floating ball 24.

Referring to fig. 17-18, an annular mounting groove 290 coaxial with the fixed cover plate 29 is formed on one side of the fixed cover plate 29 close to the annular clamping groove cover plate 27, an annular sealing ring 292 is arranged in the annular mounting groove 290, the cross section of the annular sealing ring 292 is in a shape of a U, an assembly groove 2921 is formed in the U-shaped groove of the annular sealing ring 292, an assembly block 2922 is arranged in the assembly groove 2921, a key sensing module 2901 in corresponding abutting connection with the assembly block is arranged in the annular mounting groove 290, the key sensing module 2901 is in communication connection with the control unit, and whether the sampling device 20 is sealed or not is judged by detecting signals of the key sensing module 2901 arranged on the fixed cover plate 29, so that sampling data errors are large due to unsealing of the sampling device 20 are prevented.

s20: when the required sea area depth information transmitted by the depth sensing module 26 is acquired, the first limiting mechanism 23 is opened so as to release the second floating ball 24;

s30: the second floating ball 24 pulls the first limiting mechanism 23 so as to open the cover sealing mechanism 22 to seal the water inlet, and the collection of seawater is completed;

s40: the control releaser 31 releases the weight 32 to make the sampling device 20 float out of the sea surface through the buoyancy provided by the floating ball device 10, thereby recovering the water sample collecting system.

As a further improvement, S401: receiving the signal from the positioning detector 274 to the control unit, the control releaser 31 releases the weight 32 to cause the sampling device 20 to float out of the sea surface by the buoyancy provided by the floating ball device 10, thereby recovering the sampling device 20.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high volume water sample collection system comprising:

the floating ball device (10) comprises a plurality of first floating balls (11) which are connected in sequence;

the sampling device (20) is arranged below the floating ball device (10), and comprises a sampling barrel body (21), water inlets are formed in two ends of the sampling barrel body (21), a sealing mechanism (22) for sealing the water inlets is arranged in the sampling barrel body (21), a first limiting mechanism (23) for limiting the movement of the sealing mechanism (22) is arranged in the sealing mechanism (22), the first limiting mechanism (23) is connected with a second floating ball (24) arranged outside the sampling barrel body (21), the second floating ball (24) is fixed on the outer side wall of the sampling barrel body (21) through a second limiting mechanism (25), a depth sensing module (26) is arranged on the sampling barrel body (21), the depth sensing module (26) is electrically connected with the second limiting mechanism (25), and the second limiting mechanism (25) is in communication connection with a control unit;

the release device (30) is arranged below the sampling device (20) and comprises a release device (31) and a balancing weight (32) arranged below the release device (31) and connected with the release device (31), the release device (31) is in communication connection with the control unit, and the gravity of the balancing weight (32) is greater than the buoyancy provided by the floating ball device (10);

when the depth sensing module (26) detects a specified depth value, the second floating ball (24) is released by the second limiting mechanism (25) under the control of the control unit, the second floating ball (24) pulls the first limiting mechanism (23) to open the sealing mechanism (22), the sealing mechanism (22) seals the water inlet to finish water sample collection, the releaser (31) is controlled by the control unit to release the balancing weight (32), and the floating ball device (10) drives the sampling device (20) to float upwards to realize the recovery of the sampling barrel.

2. The large-volume water sample collection system according to claim 1, wherein the cover sealing mechanism (22) comprises a fixed support (221) arranged on the inner wall of the sampling barrel body (21), the fixed support (221) is equal to the water inlets at two ends, mounting columns (222) are symmetrically arranged at two ends of the fixed support (221) along the axial line direction of the sampling barrel body (21), first accommodating holes (2221) are formed in the mounting columns (222), sliding rods (223) are accommodated in the first accommodating holes (2221), the sliding rods (223) are connected with the bottoms of the first accommodating holes (2221) through first springs (224), and one ends of the sliding rods (223) away from the first springs (224) are connected with the cover sealing plates (225).

3. The large-volume water sample collection system according to claim 2, wherein the first accommodating hole (2221) is symmetrically provided with a limit groove (2222) near one end side wall of the fixed support (221), the sliding rod (223) is radially provided with a second accommodating hole (2231), the sliding rod (223) side wall is provided with a sliding groove group (2232) penetrating through the second accommodating hole (2231), the sliding groove group (2232) comprises a first sliding groove (22321) and a second sliding groove (22322) which are communicated, the width dimension of the first sliding groove (22321) is L1, the width dimension of the second sliding groove (22322) is L2, wherein L1 is larger than L2, and the first sliding groove (22321) is arranged near one end of the fixed support (221) of the sliding rod (223).

4. A system according to claim 3, wherein the first limit mechanism (23) comprises an outer housing (231), a sliding projection (2311) adapted to the second sliding groove (22322) is provided on a side wall of the outer housing (231), and the sliding projection (2311) is provided in the second sliding groove (22322) so that the first limit mechanism (23) slides in the second receiving hole (2231); a third accommodating hole (2312) is formed in the top of the outer shell (231), a moving shaft (232) is accommodated in the third accommodating hole (2312), one end of the moving shaft (232) is connected with a second floating ball (24), supporting rods (2321) are symmetrically arranged on the side wall of the moving shaft (232), a second spring (2323) is sleeved on the moving shaft (232), one end of the second spring (2323) is connected with the side wall of the top of the third accommodating hole (2312), the other end of the second spring abuts against the supporting rods (2321), a placing groove (2313) penetrating through the side wall of the outer shell (231) is formed in the bottom of the outer shell (231), the placing groove (2313) is communicated with the third accommodating hole (2312), the other end of the moving shaft (232) penetrates through the middle part of the third accommodating hole (2312) and is inserted into the connecting rod (233), two ends of the connecting rod (233) are connected with the first connecting rod (234), the other end of the first connecting rod (234) is connected with the second connecting rod (235), one end, far away from the first connecting rod (234), of the second connecting rod (235) is an arc-shaped tooth part (2351), a transverse sliding groove (2314) is formed in the side wall of the placing groove (2313), a slidable abutting block (236) is arranged in the sliding groove (2314), a straight tooth part (2361) is formed on the upper end surface of the abutting block (236), the straight tooth (2361) engages the arcuate tooth (2351).

5. The large-volume water sample collection system according to claim 1, wherein the sampling device (20) further comprises an annular clamping groove cover plate (27) arranged at two axial ends of the sampling barrel body (21), a plurality of fixing clamping grooves (271) are formed in one end of the annular clamping groove cover plate (27) along the axis of the annular clamping groove cover plate, the sampling barrel body (21) comprises a multilayer pressure-resistant shell (28), the pressure-resistant shell (28) is arranged in the fixing clamping grooves (271), a fixing cover plate (29) connected with the clamping groove cover plate in a rotating mode is arranged at the other end of the annular clamping groove cover plate (27), a first magnetic attraction portion (291) is arranged on the fixing cover plate (29), a limit baffle (272) is arranged on one side of the annular clamping groove cover plate (27), and a second magnetic attraction portion (273) is arranged on the limit baffle (272), and the first magnetic attraction portion (291) and the second magnetic attraction portion (273) are fixed in a magnetic attraction mode.

6. The system according to claim 5, wherein a positioning sensor (2322) is arranged on the moving shaft (232), a positioning detector (274) is arranged on the annular clamping groove cover plate (27), the positioning detector (274) is in communication connection with the control unit, and when the positioning detector (274) detects a signal of the positioning sensor (2322), a signal is sent to the control unit.

7. The large-volume water sample collection system according to claim 5, wherein an annular mounting groove (290) coaxial with the fixed cover plate (29) is formed in one side, close to the annular clamping groove cover plate (27), of the fixed cover plate (29), an annular sealing ring (292) is arranged in the annular mounting groove (290), the cross section of the annular sealing ring (292) is in a U-shaped shape, an assembly groove (2921) is formed in the U-shaped groove of the annular sealing ring (292), an assembly block (2922) is arranged in the assembly groove (2921), a key sensing module (2901) in corresponding abutting connection with the assembly block is arranged in the annular mounting groove (290), and the key sensing module (2901) is in communication connection with the control unit.

8. The large-volume water sample collection system according to claim 5, wherein symmetrical supporting columns (281) are arranged on the outer side wall of the pressure-resistant shell (28) on the outermost layer along the axial direction, the second floating ball (24) is connected with the movable shaft (232) through a Kevlar pull rope (241), a pull ring (242) is arranged on the Kevlar pull rope (241), the second limiting mechanism (25) comprises a driving steering engine (251) arranged on the supporting columns (281), the driving steering engine (251) drives a release buckle (252), and the release buckle (252) is connected with the pull ring (242).

9. A control method of a large-volume water sample collection system,

a high volume water sample collection system for use in any one of claims 1 to 8 comprising the steps of:

s20: when the needed sea area depth information transmitted by the depth sensing module (26) is acquired, the second limiting mechanism (25) is opened so as to release the second floating ball (24);

s30: the second floating ball (24) pulls the first limiting mechanism (23) so as to open the sealing mechanism (22) to seal the water inlet, and the collection of seawater is completed;

s40: the control releaser (31) releases the balancing weight (32) to enable the sampling device (20) to float out of the sea surface through the buoyancy provided by the floating ball device (10), so that the water sample collecting system is recovered.

10. A method of controlling a large volume water sample collection system according to claim 9, comprising:

s401: receiving a signal that the positioning detector (274) detects the positioning sensor (2322);

s402: and receiving a signal sent to the control unit by the key sensing module (2901), and controlling the releaser (31) to release the balancing weight (32) so that the sampling device (20) floats out of the sea surface through the buoyancy provided by the floating ball device (10), thereby recycling the sampling device (20).