CN220650092U - Automatic sampler without cable - Google Patents

Abstract

The application provides a no cable autosampler, include: the device comprises a first pressure chamber, a second pressure chamber, a control cabin, a solenoid valve assembly and a piston assembly; the two ends of the first pressure chamber are respectively provided with a first water inlet and a first water outlet; the second pressure chamber is sleeved outside the first pressure chamber, and one end of the second pressure chamber is provided with a second water inlet; after high-pressure water flow is introduced into the first pressure chamber, the piston assembly moves from the first water inlet to the first water outlet under the pressure of the high-pressure water flow, the high-pressure water flow enters the electromagnetic valve assembly through the through hole and is decompressed in the second pressure chamber, the control device controls the electromagnetic valve assembly to be closed, and the high-pressure water flow cannot enter the second pressure chamber to be decompressed, so that the piston assembly moves from the first water outlet to the first water inlet, and the piston assembly drives the cutter head to sample; the whole sampling process does not need to give instructions manually, so that the technical problems of trouble cable recovery, low submarine sound communication efficiency and difficult communication can be avoided.

Description

Automatic sampler without cable

Technical Field

The application belongs to ocean power equipment technical field, especially relates to a no cable automatic sampler.

Background

The gravity sampler is mainly used for sampling submarine sediment, and the basic principle is that the sampler penetrates into the seabed under the action of gravity of the sampler to obtain a submarine sediment sample similar to the penetration depth, and the penetration depth depends on the hardness of the seabed, the structural shape of the sampler and the counterweight.

However, because the working environment of the gravity sampler is from hundreds of meters to thousands of meters, cable communication or acoustic communication is generally adopted to give a sampling instruction to the sampler, the cable length required by the cable communication needs to be changed according to the sampling depth, and when the sampling depth is deeper, the recovery of the cable is very troublesome, and in a complex marine environment, the acoustic communication has the problems of low efficiency and difficult communication.

Disclosure of Invention

To the shortcoming that exists among the correlation technique, this application provides a no cable automatic sampler to simplify the structure of sampler, with the sample process automation, need not to let operating personnel give instruction operation sample, in order to solve and retrieve the cable trouble, the sound communication inefficiency, the technical problem of communication difficulty.

The application provides a no cable autosampler, include:

the recovery device comprises power equipment and a floating body, wherein the floating body is sleeved outside the power equipment;

the sampling device is in transmission connection with the power equipment, and a balancing weight is sleeved outside the sampling device;

the control device is hermetically arranged in the power equipment;

the release device is arranged between the recovery device and the sampling device, and is respectively connected with the recovery device and the sampling device and electrically connected with the control device;

the power plant further includes:

the two ends of the first pressure chamber are respectively provided with a first water inlet and a first water outlet;

the second pressure chamber is provided with a second water inlet;

the electromagnetic valve assembly is arranged between the first pressure chamber and the second pressure chamber and is respectively communicated with the first water outlet and the second water inlet, and the electromagnetic valve assembly is electrically connected with the control device;

the piston assembly is arranged in the first pressure cavity and separates the first water inlet from the first water outlet, at least one through hole is arranged on the piston assembly in a penetrating mode, the through hole is communicated with the first water inlet and the first water outlet, and the piston assembly is in transmission connection with the sampling device.

In some embodiments, the cableless auto-sampler further comprises:

the first limiting piece is arranged on the inner wall of the first pressure chamber, the distance from the first limiting piece to the first water outlet is not greater than the distance from the first limiting piece to the first water inlet, and the piston assembly is positioned between the first limiting piece and the first water outlet.

In some embodiments, the piston assembly comprises:

the piston head is arranged in the first pressure cavity in a sliding manner and separates the first water inlet from the first water outlet, the piston head is positioned between the first limiting piece and the first water outlet, and the through hole is formed in the piston head in a penetrating manner;

one end of the piston rod is fixedly connected with the piston head, and the other end of the piston rod is connected with the sampling device;

the water injection screw plug is arranged in the through hole and is detachably connected with the through hole.

In some embodiments, the sampling device comprises:

the first pipe is arranged at one end of the piston rod and is fixedly connected with the piston rod;

the second pipe is coaxially sleeved outside the first pipe and is connected with the release device;

the tool bit is arranged at one end of the second pipe far away from the piston rod;

the second limiting piece is arranged on the inner wall of the cutter head;

the piston rod drives the first pipe to push the second limiting piece, so that the cutter head and the second pipe are pushed to move.

In some embodiments, the cableless auto-sampler further comprises:

one end of the connecting sleeve is connected with the piston rod, and the other end of the connecting sleeve is connected with the first pipe;

the one-way valve is arranged in the connecting sleeve and is positioned between the piston rod and the first pipe.

In some embodiments, the through hole is a countersunk threaded hole, the water injection screw plug is in threaded connection with the through hole, and at least one pressure relief hole is arranged in the water injection screw plug in a penetrating manner along the axial direction of the water injection screw plug.

In some embodiments, the second pressure chamber is coaxially sleeved outside the first pressure chamber, and the floating body is sleeved outside the second pressure chamber;

or the second pressure chamber is arranged at one end of the first pressure chamber, which is close to the first water inlet or the first water outlet, and the floating body is sleeved outside the second pressure chamber and/or the first pressure chamber.

In some embodiments, the cableless auto-sampler further comprises:

the third limiting piece is fixedly arranged on the outer wall of the second pipe, and the outer diameter of the third limiting piece is larger than the inner diameter of the balancing weight.

In some embodiments, the power plant further comprises:

the control cabin is arranged at one end of the first pressure chamber away from the first water outlet and fixedly connected with the first pressure chamber, and the control device is arranged in the control cabin.

In some embodiments, the solenoid valve assembly includes:

the first electromagnetic valve cabin is respectively connected with the first water outlet and the second water inlet in a pipe joint manner;

the first electromagnetic valve is connected with the first electromagnetic valve cabin pipe and is electrically connected with the control device.

In summary, the application provides a cableless automatic sampler, after high-pressure water flow is introduced into a first pressure chamber, a piston assembly is moved from a first water inlet to a first water outlet under the pressure of the high-pressure water flow, the high-pressure water flow enters an electromagnetic valve assembly through a through hole and is decompressed in a second pressure chamber, a control device controls the electromagnetic valve assembly to be closed, the high-pressure water flow cannot enter the second pressure chamber and is decompressed, so that the piston assembly moves from the first water outlet to the first water inlet, the piston assembly drives a cutter head to sample, and finally, a sample is recovered through a release device; the whole sampling process does not need to give instructions manually, so that the technical problems of trouble cable recovery, low submarine sound communication efficiency and difficult communication can be avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is a perspective view of the overall structure of the cableless automatic sampler of the present application;

FIG. 2 is a front view of the overall structure of the cableless automatic sampler of the present application;

FIG. 3 is a cross-sectional view of section A-A of FIG. 2 of the cableless auto-sampler of the present application;

FIG. 4 is a perspective view of the whole structure of the cableless automatic sampler of the present application after the floating body and the counterweight are removed;

FIG. 5 is a front view of the whole structure of the cableless automatic sampler of the present application after the floating body and the counterweight are removed;

FIG. 6 is a front view of a power plant of the cableless auto-sampler of the present application;

FIG. 7 is a cross-sectional view of section B-B of FIG. 6 of the cableless auto-sampler of the present application;

FIG. 8 is a front view of the sampling device and connection sleeve of the cableless automatic sampler of the present application;

FIG. 9 is a cross-sectional view of the C-C section of FIG. 8 of the cableless auto-sampler of the present application;

FIG. 10 is a perspective view of a connection sleeve of the cableless auto-sampler of the present application;

FIG. 11 is a front view of a tool tip of the cableless auto-sampler of the present application;

FIG. 12 is a top view of a tool tip of the cableless auto-sampler of the present application;

FIG. 13 is a schematic view of the connection structure of the release device of the cableless automatic sampler of the present application;

FIG. 14 is a cross-sectional view of a static pressure release device of the cableless auto-sampler of the present application;

FIG. 15 is a front view of a first solenoid valve compartment of the cableless autosampler of the present application;

FIG. 16 is a cross-sectional view of the D-D section of FIG. 15 of the cableless auto-sampler of the present application;

FIG. 17 is a front view of a piston head of the cableless auto-sampler of the present application;

fig. 18 is a cross-sectional E-E view of fig. 17 of the cableless auto-sampler of the present application.

In the figure: 1. a first pressure chamber; 2. a first water inlet; 3. a first water outlet; 4. a first limiting member; 5. a second pressure chamber; 6. a control cabin; 7. a first solenoid valve compartment; 8. a second limiting piece; 9. a piston head; 10. a piston rod; 11. a water injection screw plug; 12. a through-flow hole; 13. connecting sleeves; 14. a one-way valve; 15. a second solenoid valve compartment; 16. a hydrostatic trip release device; 17. a first tube; 18. a second tube; 19. a cutter head; 20. a third limiting member; 21. a floating body; 22. balancing weight; 23. a pressure relief hole; 24. a pressure relief vent; 25. a first separator; 26. a second separator; 27. a third water inlet; 28. a second water outlet; 29. a connecting rod; 30. a connecting ring; 31. a first valve hatch; 32. a first valve pod housing; 33. a first valve body.

Detailed Description

The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present application, it should be understood that the terms "center," "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The terms "first," "second," and "third" 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", "a second", or a third "may explicitly or implicitly include one or more such feature.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Detailed description of the preferred embodiments

The application provides a no cable autosampler, include: the device comprises a recovery device, a sampling device, a release device and a control device; wherein, recovery unit includes power equipment and body, and the sampling device overcoat is equipped with the balancing weight, and tripping release device is connected with recovery unit and sampling device respectively, and after the sampling of sampling device was accomplished, controlling means control tripping release device released recovery unit and sampling device, power equipment relies on the buoyancy of body to get back to the sea level, accomplishes the recovery sample by operating personnel.

In some embodiments, a power plant includes: the device comprises a first pressure chamber, a second pressure chamber, a control cabin, a solenoid valve assembly and a piston assembly; the first pressure chamber is a hollow tubular part, and two ends of the first pressure chamber are respectively provided with a first water inlet and a first water outlet; the second pressure chamber is a hollow tubular part, the internal volume of the second pressure chamber is larger than that of the first pressure chamber, the second pressure chamber is sleeved outside the first pressure chamber, the length of the second pressure chamber is consistent with that of the first pressure chamber, and one end of the second pressure chamber is provided with a second water inlet; the control cabin is a high-pressure-resistant sealing cabin part, the control cabin is arranged at one end of the first pressure chamber, which is far away from the first water outlet, and is fixedly connected with the first pressure chamber, a lifting ring is arranged at one end of the control cabin, which is far away from the first pressure chamber, the lifting ring is used for lifting the control cabin, and the control device is arranged in the control cabin in a sealing way; the floating body is sleeved outside the second pressure chamber, the floating body is made of low-density multiphase solid buoyancy materials and is used for providing buoyancy for power equipment, and the appearance of the floating body is set to be low flow resistance, so that the resistance of the whole cable-free automatic sampler after entering water is reduced.

In some embodiments, the electromagnetic valve assembly comprises a first electromagnetic valve and a first electromagnetic valve cabin, the first electromagnetic valve cabin is arranged between the first pressure chamber and the release device, the first electromagnetic valve cabin is a hollow high-pressure-resistant sealing cabin body component, the first electromagnetic valve is arranged in the first electromagnetic valve cabin, the first electromagnetic valve cabin further comprises a first valve cabin cover, a first valve cabin shell and a first valve body, the main acting component of the first electromagnetic valve cabin is the first valve body, two ends of the first valve cabin shell are opened, the first valve cabin cover and the first valve body are respectively arranged at two opening ends of the first valve cabin shell, radial sealing is realized among the first valve cabin cover, the first valve body and the first valve cabin shell through O-shaped rings, and the first electromagnetic valve cabin is fixed through screws; four uniformly distributed longitudinal threaded holes are formed in the first valve body in a penetrating mode, two holes are longitudinal through holes, the other two holes are longitudinal blind holes, two transverse threaded holes perpendicular to the longitudinal threaded holes are formed in the first valve body in a penetrating mode, and the longitudinal through holes and the longitudinal blind holes are respectively penetrated by the transverse threaded holes; the first electromagnetic valve controls the high-pressure water flow to enter or cut off, and the other pair of longitudinal through holes and longitudinal blind holes penetrated by the transverse threaded holes are respectively connected with the first water outlet and the second water inlet.

In some embodiments, the piston assembly comprises: piston head, piston rod and water injection screw plug; the piston head is a cylindrical part, the outer diameter of the piston head is not larger than the inner diameter of the first pressure chamber, the piston head is arranged in the first pressure chamber in a sliding manner, the piston head separates the first water inlet from the first water outlet, at least one through hole is formed in the piston head in the axial direction of the piston head in a penetrating manner, and the through hole is communicated with the first water inlet and the first water outlet at two ends of the piston head; the piston rod is a rod-shaped component, one end of the piston rod is fixedly connected with one end of the piston head, which is close to the first water outlet, and the other end of the piston rod is connected with the sampling device; the plug head of the water injection plug screw is a countersunk head, at least one pressure relief hole is penetrated in the water injection plug screw along the axial direction of the water injection plug screw, and the inner diameter of the pressure relief hole is smaller than the inner diameter of the through hole; in some embodiments, the through hole is a countersunk threaded hole, the through hole is used for accommodating the water injection plug screw in a matching mode, the water injection plug screw is in threaded connection with the through hole, and after the water injection plug screw is arranged in the through hole, the surface of the piston head is flat and has no protrusion.

It should be noted that in the practical application scenario, an operator should replace the water injection screw plug with different pressure relief hole apertures according to the requirement, or set one or more pressure relief holes on the water injection screw plug according to the requirement, or set one or more through holes according to the requirement to assemble different numbers of water injection screw plugs, so as to control the rate of high-pressure water flow entering the piston head from the side of the piston head close to the first water inlet to the side of the piston head close to the first water outlet; the larger the aperture of the pressure relief hole on the water injection screw plug is, the faster the speed is; the more the number of pressure relief holes on the water injection screw plug, the faster the speed; the greater the number of through-flow holes in the piston head, the faster the rate.

In some embodiments, a first limiting member is arranged on the inner wall of the first pressure chamber, the first limiting member is an annular member, the first limiting member is fixedly arranged around the inner wall of the first pressure chamber, a height difference is formed on the inner wall of the first pressure chamber, the inner diameter of the first limiting member is not larger than the outer diameter of the piston head, the distance from the first limiting member to the first water outlet is smaller than the distance from the first limiting member to the first water inlet, the piston head is positioned between the first limiting member and the first water outlet, the first limiting member is used for limiting the piston head to be close to the first water inlet, the first limiting member is arranged in the first pressure chamber, the space between the first water inlet and the piston head is larger than the space between the first water outlet and the piston head, after high-pressure water flows from the first water inlet, the space between the first water inlet and the piston head is rapidly filled, and pressure difference is generated on two sides of the piston head, so that the piston head is pushed to move from the first limiting member to the first water outlet.

In some embodiments, the sampling device comprises: a first tube, a second tube and a cutter head; the first pipe is a tubular part, two ends of the first pipe are open, and one end of the first pipe is connected with the piston rod; the second pipe is a pipe assembly part, the second pipe is coaxially sleeved outside the first pipe, the inner diameter of the second pipe is larger than the outer diameter of the first pipe, two ends of the second pipe are opened, one end of the second pipe is connected with the release device, and the other end of the second pipe is fixedly provided with a cutter head; the tool bit is a tubular part, one end of the tool bit is fixedly connected with the second pipe, the outer diameter of the other end of the tool bit is gradually reduced to form a blade, the tool bit is used for penetrating into the sea floor to extract a sample, and a second limiting part is arranged on the inner wall of the tool bit; the second locating part is the ring form part, and the second locating part encircles the fixed setting of tool bit inner wall, forms the difference in height on the tool bit inner wall, and the internal diameter of second locating part is not greater than the external diameter of first pipe, and the second locating part is used for restricting first pipe and stretches out to, when the piston rod drives first pipe and pushes away second locating part, the second locating part drives tool bit and second pipe motion, makes tool bit and second pipe prick the seabed of deeper layer to obtain more seabed samples.

In some embodiments, a connecting sleeve is arranged between the first pipe and the piston rod, the connecting sleeve is a cylindrical part, two ends of the connecting sleeve are opened and are provided with internal threads, two ends of the connecting sleeve are respectively in threaded connection with the first pipe and the piston rod, one end of the connecting sleeve, which is close to the first pipe, is also provided with a mounting cavity, the mounting cavity is used for mounting a one-way valve, at least one pressure relief hole is arranged on the side wall of the connecting sleeve in a penetrating way perpendicular to the axis direction of the connecting sleeve, the one-way valve is positioned between the pressure relief hole and the first pipe, and the one-way valve is used for unloading the pressure in the first pipe, which is close to one end of the connecting sleeve; when the automatic sampler without cable is pricked into the seabed for sampling, the sample is pressed into the first pipe after being cut by the cutter head, the pressure in the first pipe, which is close to one end of the one-way valve, is increased, the one-way valve is opened to release the pressure in the first pipe, which is close to one end of the one-way valve, and is released through the pressure relief hole on one side of the one-way valve, meanwhile, the one-way valve does not allow high-pressure water flow to enter the first pipe through one end, which is close to the pressure relief hole, of the one-way valve, and the pressure in the first pipe, which is close to one end of the one-way valve, is released by the one-way valve, so that the first pipe can store more samples.

In some embodiments, the third limiting piece is a ring-shaped component, the third limiting piece is fixedly arranged around the outer wall of the second pipe, a height difference is formed on the outer wall of the second pipe, the balancing weight is sleeved outside the second pipe, the outer diameter of the third limiting piece is larger than the inner diameter of the balancing weight, the third limiting piece is used for limiting the balancing weight to slide along the axis direction of the second pipe, and the third limiting piece is used for reloading the balancing weight; specifically, a bolt is arranged on the balancing weight in a penetrating manner along the axis direction of the second pipe, one end of the bolt is connected with the balancing weight, and the other end of the bolt is connected with the third limiting piece; the number of bolts is increased or decreased according to the actual situation, and the more the number of bolts is, the more firmly the counterweight is connected with the second pipe.

In some embodiments, the release device is disposed between the recovery device and the sampling device, and the release device includes a first separator, a second separator, a static pressure release device, a second electromagnetic valve, and a second electromagnetic valve chamber, where the first separator is fixedly connected to one end of the first pressure chamber, which is close to the first water outlet, and the second separator is fixedly connected to the third limiting member, and a first connecting ring and a second connecting ring are fixedly disposed on the first separator and the second separator, respectively.

The static pressure release device is a closed cylinder part, the two ends of the static pressure release device are respectively provided with a third water inlet and a second water outlet, a piston is also arranged in the static pressure release device and is in transmission connection with a connecting rod, when the connecting rod penetrates through the first connecting ring and the second connecting ring, the positions of the first separator and the second separator are relatively fixed, and the first separator is regarded as being connected with the second separator; the second solenoid valve is electrically connected with the control device, the control device controls the second solenoid valve to be opened, high-pressure water flow enters the static pressure release equipment, when the high-pressure water flow enters the static pressure release equipment through the third water inlet, the high-pressure water flow can push the piston to drive the connecting rod to be pulled out of the first connecting ring and the second connecting ring, so that the first separating body and the second separating body are disconnected, the balancing weight presses the second pipe on the sea floor, the floating body pulls out the first pipe from the second pipe by means of buoyancy, and the first pipe is driven to return to the sea level for recovery.

The second electromagnetic valve cabin is arranged between the first pressure chamber and the static pressure release device, the second electromagnetic valve cabin and the first electromagnetic valve cabin are symmetrically arranged relative to the axis of the first pressure chamber, the second electromagnetic valve cabin is a hollow high-pressure-resistant sealing cabin body part, the second electromagnetic valve is arranged in the second electromagnetic valve cabin, the second electromagnetic valve cabin further comprises a second valve cabin cover, a second valve cabin shell and a second valve body, the main acting part of the second electromagnetic valve cabin is the second valve body, two ends of the second valve cabin shell are opened, the second valve cabin cover and the second valve body are respectively arranged at two opening ends of the second valve cabin shell, radial sealing is realized among the second valve cabin cover, the second valve body and the second valve cabin shell through O-shaped rings, and the second electromagnetic valve cabin is fixed through screws; four uniformly distributed longitudinal threaded holes are formed in the second valve body in a penetrating mode, two holes are longitudinal through holes, the other two holes are longitudinal blind holes, two transverse threaded holes perpendicular to the longitudinal threaded holes are formed in the second valve body in a penetrating mode, and the longitudinal through holes and the longitudinal blind holes are respectively penetrated by the transverse threaded holes; the pair of longitudinal through holes and the longitudinal blind holes which are penetrated by the transverse threaded holes at the bottom of the second valve body are respectively connected with two ends of the second electromagnetic valve, the second electromagnetic valve controls the high-pressure water flow to enter or cut off, and the other pair of longitudinal through holes and the longitudinal blind holes which are penetrated by the transverse threaded holes are respectively connected with a second water outlet and a third water inlet of the static pressure release equipment.

In some embodiments, the control device is hermetically disposed within the control cabin, the control device comprising a first timer, a second timer, a first solenoid valve controller, a second solenoid valve controller, and a pressure sensor; the first timer is electrically connected with the first solenoid valve controller and the pressure sensor respectively; the second timer is electrically connected with the second solenoid valve controller and the pressure sensor respectively; the first solenoid valve controller is electrically connected with the first solenoid valve; the second solenoid valve controller is electrically connected with the second solenoid valve; the first timer is used for sending an electrical signal to the first solenoid valve controller at each preset time point; the second timer is used for sending an electrical signal to the second solenoid valve controller at a preset final time point; the first solenoid valve controller is used for sending an electrical signal to the first solenoid valve so as to enable the first solenoid valve to be opened or closed; the second solenoid valve controller is used for sending an electrical signal to the second solenoid valve so as to enable the second solenoid valve to be opened or closed; the pressure sensor is used for sending electrical signals to the first timer and the second timer.

According to the cable-free automatic sampler, in the actual use process, an operator pumps and decompresses the second pressure chamber of the cable-free automatic sampler before putting, so that the pressure in the second pressure chamber is reduced.

In the water surface laying process, an operator drives the shipborne crane to hoist a hoisting ring on the control cabin, so that the cable-free automatic sampler is hoisted outside the sea and is perpendicular to the sea surface, the crane releases the cable-free automatic sampler, the cable-free automatic sampler freely falls into water, and the cable-free automatic sampler obtains a certain initial speed at the moment.

After the automatic sampler without cable goes into water, the gravity of balancing weight and automatic sampler without cable is greater than the buoyancy of body to the low flow resistance appearance of body has reduced the resistance that receives after whole automatic sampler without cable goes into water, and automatic sampler without cable relies on the initial velocity when getting into water and possesses certain acceleration and pricks into the seabed.

The pressure sensor detects that the first pipe and the second pipe are pricked into the seabed and then sends an electrical signal to the first timer and the second timer, the first timer and the second timer start to count, the first pipe is positioned between the first pressure chamber and the seabed due to the fact that the position of the first pipe relative to the seabed is fixed after the first pipe is pricked into the seabed, the positions of the piston rod and the piston head are fixed, and the piston head relatively moves to the position abutting against the first limiting piece due to the fact that the gravity of the first pressure chamber and the second pressure chamber in the direction perpendicular to the seabed is larger than the friction resistance between the piston head and the first pressure chamber.

The high-pressure water flow on the sea floor enters the first pressure cavity through the first water inlet, the high-pressure water flow enters the space, close to the first water outlet, of the piston head through the pressure relief hole of the water injection screw plug, the first timer sends an electrical signal to the first solenoid valve controller at a preset first time point, the first solenoid valve in a normally closed state is opened, the high-pressure water flow entering the space, close to the first water outlet, of the piston head enters the low-pressure second pressure cavity through the first solenoid valve cabin and the second water inlet, the pressure, close to the first water inlet, of the piston head is greater than the pressure, close to the first water outlet, of the piston head, so that the high-pressure water flow pushes the piston head to move towards the first water outlet, meanwhile, the piston head drives the first pipe to push the second limiting piece through the piston rod, so that the tool bit and the second pipe move deeper towards the sea floor, and a sea floor sample is stored in the first pipe after being cut by the tool bit.

The first timer sends an electrical signal to the first solenoid valve controller again at a preset second time point, the first solenoid valve is closed, high-pressure water flows into the space, close to the first water outlet, of the piston head through the pressure relief hole of the water injection plug screw until the space, close to the first water outlet, of the piston head is full of the high-pressure water flow, at the moment, the pressure, close to the first water inlet, of the piston head is equal to the pressure, close to the first water outlet, of the piston head, and because the gravity, perpendicular to the seabed direction, of the first pressure chamber and the second pressure chamber is larger than the friction resistance between the piston head and the first pressure chamber, the piston head moves towards the direction of the first water inlet until the piston head is abutted against the first limiting piece.

In order to acquire more seabed samples, the first timer continuously sends electrical signals to the first solenoid valve controller at different preset time points so that the first solenoid valve is repeatedly opened or closed, the cutter head and the second pipe move deeper into the seabed until the second timer reaches a preset final time point, the second timer sends electrical signals to the second solenoid valve controller, the second solenoid valve controller controls the second solenoid valve to be opened, high-pressure water flow enters static pressure release equipment, the static pressure release equipment enables the first separator to be disconnected from the second separator, after the first separator is disconnected from the second separator, the balancing weight presses the second pipe on the seabed, and the floating body pulls the first pipe out of the second pipe by means of buoyancy so as to drive the first pipe to return to the sea level, and operators recover the first pipe at the sea level.

Second embodiment

The second embodiment is different from the first embodiment in that the second pressure chamber is arranged at one end of the first pressure chamber close to the first water inlet or the first water outlet, and the floating body is sleeved outside the second pressure chamber and/or the first pressure chamber.

In some embodiments, the second pressure chamber is disposed at one end of the first pressure chamber near the first water inlet, the second pressure chamber and the first pressure chamber are continuously arranged in the same axis, the control cabin is disposed at one end of the second pressure chamber far away from the first pressure chamber, a space is disposed between the second pressure chamber and the first pressure chamber, the second pressure chamber is fixedly connected with the first pressure chamber, the first electromagnetic valve cabin is disposed between the second pressure chamber and the first pressure chamber, the first electromagnetic valve cabin is respectively connected with the second pressure chamber and the first pressure chamber in a pipe, and the floating body is sleeved outside the second pressure chamber and/or the first pressure chamber.

In some embodiments, the second pressure chamber is disposed at one end of the first pressure chamber near the first water outlet, the second pressure chamber and the first pressure chamber are continuously arranged in the same axis, the control cabin is disposed at one end of the first pressure chamber far away from the second pressure chamber, a space is disposed between the second pressure chamber and the first pressure chamber, the second pressure chamber is fixedly connected with the first pressure chamber, the first electromagnetic valve cabin is disposed between the second pressure chamber and the first pressure chamber, the first electromagnetic valve cabin is respectively connected with the second pressure chamber and the first pressure chamber in a pipe, and the floating body is sleeved outside the second pressure chamber and/or the first pressure chamber.

Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The above embodiments are only for illustrating the technical solution of the present application and not for limiting the same; although the present application has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will appreciate that: modifications may be made to the specific embodiments herein or equivalents may be substituted for part of the technical features; without departing from the spirit of the technical solutions of the present application, it should be covered in the scope of the technical solutions claimed in the present application.

Claims (10)

1. A cableless automatic sampler comprising:

the recovery device comprises power equipment and a floating body, wherein the floating body is sleeved outside the power equipment;

the sampling device is in transmission connection with the power equipment, and a balancing weight is sleeved outside the sampling device;

the control device is hermetically arranged in the power equipment;

the release device is arranged between the recovery device and the sampling device, and is respectively connected with the recovery device and the sampling device and electrically connected with the control device;

the power plant further includes:

the two ends of the first pressure chamber are respectively provided with a first water inlet and a first water outlet;

the second pressure chamber is provided with a second water inlet;

the electromagnetic valve assembly is arranged between the first pressure chamber and the second pressure chamber and is respectively communicated with the first water outlet and the second water inlet, and the electromagnetic valve assembly is electrically connected with the control device;

the piston assembly is arranged in the first pressure cavity and separates the first water inlet from the first water outlet, at least one through hole is arranged on the piston assembly in a penetrating mode, the through hole is communicated with the first water inlet and the first water outlet, and the piston assembly is in transmission connection with the sampling device.

2. The cableless automatic sampler according to claim 1, further comprising:

the first limiting piece is arranged on the inner wall of the first pressure chamber, the distance from the first limiting piece to the first water outlet is not greater than the distance from the first limiting piece to the first water inlet, and the piston assembly is positioned between the first limiting piece and the first water outlet.

3. The cableless auto-sampler of claim 2, wherein the piston assembly comprises:

the piston head is arranged in the first pressure cavity in a sliding manner and separates the first water inlet from the first water outlet, the piston head is positioned between the first limiting piece and the first water outlet, and the through hole is formed in the piston head in a penetrating manner;

one end of the piston rod is fixedly connected with the piston head, and the other end of the piston rod is connected with the sampling device;

the water injection screw plug is arranged in the through hole and is detachably connected with the through hole.

4. A cableless automatic sampler according to claim 3, characterized in that the sampling device comprises:

the first pipe is arranged at one end of the piston rod and is fixedly connected with the piston rod;

the second pipe is coaxially sleeved outside the first pipe and is connected with the release device;

the tool bit is arranged at one end of the second pipe far away from the piston rod;

the second limiting piece is arranged on the inner wall of the cutter head;

the piston rod drives the first pipe to push the second limiting piece, so that the cutter head and the second pipe are pushed to move.

5. The cableless automatic sampler according to claim 4, further comprising:

one end of the connecting sleeve is connected with the piston rod, and the other end of the connecting sleeve is connected with the first pipe;

the one-way valve is arranged in the connecting sleeve and is positioned between the piston rod and the first pipe.

6. The automatic cable-less sampler of claim 3 wherein the through-flow hole is a countersunk threaded hole, the water injection plug screw is in threaded connection with the through-flow hole, and at least one pressure relief hole is arranged in the water injection plug screw in the axial direction of the water injection plug screw.

7. The cableless automatic sampler according to claim 1, wherein the second pressure chamber is coaxially sleeved outside the first pressure chamber, and the floating body is sleeved outside the second pressure chamber;

or the second pressure chamber is arranged at one end of the first pressure chamber, which is close to the first water inlet or the first water outlet, and the floating body is sleeved outside the second pressure chamber and/or the first pressure chamber.

8. The cableless automatic sampler according to claim 4, further comprising:

the third limiting piece is fixedly arranged on the outer wall of the second pipe, and the outer diameter of the third limiting piece is larger than the inner diameter of the balancing weight.

9. The cableless auto-sampler of claim 1, wherein the power device further comprises:

the control cabin is arranged at one end of the first pressure chamber away from the first water outlet and fixedly connected with the first pressure chamber, and the control device is arranged in the control cabin.

10. The cableless autosampler according to claim 1, characterized in that the solenoid valve assembly comprises:

the first electromagnetic valve cabin is respectively connected with the first water outlet and the second water inlet in a pipe joint manner;

the first electromagnetic valve is connected with the first electromagnetic valve cabin pipe and is electrically connected with the control device.