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CN-121973891-A - Seabed base release device based on intermittent threads

CN121973891ACN 121973891 ACN121973891 ACN 121973891ACN-121973891-A

Abstract

The application provides a seabed base releasing device based on discontinuous threads, which comprises a first seabed base, a second seabed base and a partition type threaded body connected with the first seabed base, wherein the partition type threaded body comprises a body and two groups of threaded fan bodies, each group of threaded fan bodies comprises at least three fan blades, the at least three fan blades are arranged at intervals along the circumferential direction of the body, each fan blade comprises an adjacent assembly area and a guide area, the guide area is in a contracted shape, a connecting cabin is fixedly connected with the second seabed base, an assembly cavity is defined in the connecting cabin, two groups of threaded grooves are formed in the inner wall of the assembly cavity, the partition type threaded body is positioned in the assembly cavity, and the partition type threaded body is rotated by a preset angle along the second direction, and is separated from the two groups of threaded grooves so as to be used for separating the first seabed base from the second seabed base. The application can rapidly, stably and reliably execute the seabed base release action, and can reduce disturbance of complex sea conditions to a measuring instrument through limit cooperation of the threaded body and the connecting cabin.

Inventors

  • CAO KANG
  • WANG ZILONG
  • ZENG RONG
  • MA TIANZHI
  • HE YUQIANG

Assignees

  • 中电科海洋信息技术研究院有限公司
  • 中国电子科技集团有限公司电子科学研究院

Dates

Publication Date
20260505
Application Date
20251231

Claims (10)

  1. 1. The seabed base release device based on discontinuous threads is characterized by comprising a first seabed base and a second seabed base, wherein the first seabed base and the second seabed base are detachably connected through a connecting assembly, and the connecting assembly comprises: The partition type screw thread body is rotatably connected with the first seabed base, the partition type screw thread body comprises a body and two groups of screw thread fans formed on the body, the two groups of screw thread fans are arranged on the periphery of the body at intervals, the two groups of screw thread fans are oppositely arranged in the radial direction of the body, each group of screw thread fans comprises at least three fan blades, the at least three fan blades are arranged at intervals along the axial direction of the body, each fan blade comprises an adjacent assembly area and a guide area, and the guide area is in a contracted shape along the direction from the assembly area to the guide area; The marine seabed separating device comprises a connecting cabin, wherein the connecting cabin is fixedly connected with a second seabed base, an assembling cavity is defined in the connecting cabin, two groups of thread grooves are formed in the inner wall of the assembling cavity at intervals, the two groups of thread grooves are oppositely arranged in the radial direction of the assembling cavity, a partition type thread body is arranged in the assembling cavity and is in corresponding limit fit with the two groups of thread grooves along a first direction, the first seabed base is connected with the second seabed base, the partition type thread body is rotated along a second direction and is separated from the two groups of thread grooves for separating the first seabed base from the second seabed base, and the first direction is opposite to the second direction.
  2. 2. The intermittent thread based seabed release as claimed in claim 1, wherein the connection assembly further comprises at least three elastic members, the at least three elastic members are uniformly spaced between the first seabed and the second seabed, and one end of each elastic member in an elastic deformation direction is connected with the first seabed and the other end is connected with the second seabed.
  3. 3. The intermittent thread based seabed release as claimed in claim 1, wherein each fan blade is inclined to form an inclined surface in a direction away from the body, the inclined surface being configured as the guide region, and the inclined surface being inclined at an angle of 60 ° -89 °.
  4. 4. The intermittent thread based seabed releasing apparatus as claimed in claim 1, wherein a central angle of each set of the thread sectors is 80 ° or more and less than 90 °.
  5. 5. The intermittent thread based seabed releasing apparatus as claimed in claim 1, wherein a region between the two sets of thread sectors on the outer circumference of the body is a smooth surface region having a central angle of 90 ° or more and 100 ° or less.
  6. 6. The intermittent thread based seabed releasing apparatus as claimed in any of claims 1 to 5, wherein the connecting assembly further comprises a limit baffle, the limit baffle is disposed on an inner wall of the assembling cavity, the two sets of thread segments are correspondingly separated from the two sets of thread grooves after the cut-off thread is positioned in the assembling cavity and rotated by a predetermined angle along the second direction, and the limit baffle is engaged with at least one of the thread segments.
  7. 7. The intermittent thread based seabed releasing apparatus as claimed in any one of claims 1 to 5, wherein the connecting assembly further comprises a limit protrusion and a limit groove, wherein one of the limit protrusion and the limit groove is disposed on the first seabed, the other is disposed on the second seabed correspondingly, and the limit protrusion is in limit fit with the limit groove.
  8. 8. The intermittent thread based seabed releasing apparatus of any of claims 1 to 5, wherein the connecting compartment comprises a hatch cover, the connecting assembly further comprises a sealing member, the sealing member is arranged on the hatch cover, the hatch cover is arranged on an opening of the connecting compartment after the partition type screw body is in limit fit with the screw thread groove, and the sealing member is in abutting contact with an end surface of the partition type screw body.
  9. 9. The intermittent thread based seabed release as claimed in any one of claims 1 to 5, further comprising a rotary hydraulic cylinder drivingly connected to the partition type screw for driving the rotation of the partition type screw.
  10. 10. The intermittent thread based seabed release of any of claims 1 to 5, wherein the first seabed is provided with an integrated instrument pod, a positioning assembly, a communication assembly, a safety assembly and a float, and the second seabed is provided with a rope pod, a measuring device, an energy pod and a central control unit.

Description

Seabed base release device based on intermittent threads Technical Field The invention relates to the technical field of ocean observation, in particular to a seabed base releasing device based on intermittent threads. Background The seabed-based observation system is a monitoring system for acquiring various marine environment elements by integrating various marine environment monitoring equipment or sensors on the basis of a bottom-supported platform distributed on the seabed, and can be used for continuously monitoring the marine environment at fixed points, so that the seabed-based observation system is widely applied. The related art generally adopts a sequential connection mode of a seabed base, a gravity block, and a unhooking device and a floating ball. The unhooking device is connected with a main cable and a standby cable which bear force, and is connected with a rope to the floating ball so as to facilitate the later recovery of the seabed base, the unhooking device is generally an acoustic releaser, the floating ball is utilized to position the specific position of the whole system during recovery, the gravity block enables the cable which is used as the allowance between the gravity block and the seabed base to sink, and meanwhile, the stress of the floating ball end is isolated from the seabed base end, so that the seabed base is prevented from being displaced due to the impact of sea waves on the floating ball. The seabed is launched and the ship is laid after launching, so that the cable can be straightened in advance to prevent the cable from knotting under the impact of underwater waves, and meanwhile, the cable between the gravity block and the seabed needs to be kept with enough length, so that the gravity block and the seabed are pulled apart when each of the gravity block and the seabed is submerged, the gravity block is prevented from being crashed into the seabed, and the system can be suspended to be completely submerged in water when being laid, and then unhooked to enable the system to freely fall. In the process of recovering the seabed base in the related technology, the system can be provided with two sets of releasers, wherein one set of releasers is an acoustic response release system and is used in normal recovery, and the other set of releasers is a timing releaser and is a standby release means. Both of which can control the release mechanism. After the acoustic response releaser water machine sends a release instruction (or when the set time of the timing releaser is reached), the underwater machine controls the release mechanism to be released so as to enable the instrument cabin to float on the water surface, and the instrument cabin is recovered. However, the acoustic release is in a position of several meters or tens of meters below the water surface, and the acoustic release is soft connection, so that the transmission quality and reliability of acoustic signals can be affected under the conditions of complex underwater topography, severe sea conditions, submarine earthquakes and the like, and the acoustic release cannot be reliably released, so that the recovery of the seabed base can not be reliably realized. Disclosure of Invention In view of the above-mentioned drawbacks or shortcomings in the prior art, it is desirable to provide a seabed base releasing device based on intermittent threads, which has a good stability of the mating structure of the partition type screw body and the connecting cabin, reduces the influence of complex underwater ground conditions, and can reliably realize the separation of the first seabed base and the second seabed base by rotating the partition type screw body along the opposite directions, and has the advantages of high separation reliability, simple operation and good safety. In a first aspect, the invention provides a seabed base release device based on discontinuous threads, which comprises a first seabed base and a second seabed base, wherein the first seabed base and the second seabed base are detachably connected through a connecting assembly, and the connecting assembly comprises: The partition type screw thread body is rotatably connected with the first seabed base, the partition type screw thread body comprises a body and two groups of screw thread fan bodies formed on the body, the two groups of screw thread fan bodies are arranged on the periphery of the body at intervals, the two groups of screw thread fan bodies are oppositely arranged in the radial direction of the body, each group of screw thread fan bodies comprises at least three fan blades, the at least three fan blades are arranged at intervals along the axial direction of the body, each fan blade comprises an adjacent assembly area and a guide area, and the guide area is in a shrinkage shape along the direction from the assembly area to the guide area; the marine seabed separating device comprises a connecting cabin, two sets of screw grooves, two sets of scre