Warm salt well water inlet hole wave dissipation device for ocean tide station

Abstract

The invention discloses a water inlet hole wave dissipation device for a warm salt well of an ocean tide station. The water inlet hole wave dissipation device comprises an elbow body, a flow guide energy dissipation assembly and a threaded expansion fixing device. The elbow body is connected with the outer wall of the water inlet hole through a threaded expansion fixing device. A porous wave dissipation outer cover is arranged at an outlet of the elbow body. A damping hole array is additionally arranged on the outer wall of the elbow body. The water flow path is prolonged through porous wave dissipation and an external elbow structure, wave disturbance is remarkably reduced, and meanwhile natural exchange of water is guaranteed. According to the threaded expansion fixing device, rapid clamping of the expansion mechanism and the well wall is achieved through an external rotating screw, and the threaded expansion fixing device is suitable for stable and rapid installation of equipment under poor sea conditions. The sea tide station thermosalinity well water inlet hole wave dissipation device is used for water inlet holes of different heights, adapts to the size of a standard thermosalinity well shaft of the sea tide station, and remarkably reduces the damage of water flow impact to a sensor during storm surge and typhoon while guaranteeing the water exchange efficiency. The device does not need external energy, is low in maintenance cost and is suitable for long-term ocean observation scenes.

Description

Technical Field

[0001] The present invention relates to ocean observation technology, and specifically to a wave-dissipating device for the water inlet hole of a thermohaline well in a tidal station. Background Art

[0002] The thermohaline well of a tidal station monitors parameters such as seawater temperature and salinity through sensors in a vertical wellbore. According to the "Ocean Observation Specification - Part 2: Shore Observation", the water inlet hole of the thermohaline well needs to be set with a diameter ≥ 10 cm to ensure water body exchange. However, wave action can cause violent shaking of the water body in the well, forming turbulence and bubbles, interfering with the sensor signal; during storm surges and typhoons, high-speed water flows into the wellbore through the water inlet hole, forming strong eddies, which can easily cause violent collisions between the thermohaline sensor and the well wall, resulting in loose welding points of connectors, water ingress into the sensor, and damage to the sensor and inability to work properly; or causing the sensor to get stuck in the thermohaline well, the sensor float to flip, and the cable to become entangled, etc., resulting in the sensor probe leaving the water surface and unable to correctly measure thermohaline data. Traditional protection means (such as embedded filters) are easily blocked and reduce the water body exchange efficiency.

[0003] In the prior art, wave-dissipating means mostly adopt embedded filters, fixed perforated plates or flow guide cylinder structures, but there are the following defects: 1. The embedded filter is easily blocked, resulting in reduced water body exchange efficiency.

[0004] 2. There is a contradiction between wave-dissipating efficiency and water body exchange: the aperture ratio of traditional perforated plates is fixed. To achieve high wave-dissipating efficiency, the aperture needs to be reduced, but this will hinder the water body exchange inside and outside the well, resulting in data lag.

[0005] 3. High maintenance cost: complex mechanical structures are easily attached and corroded by marine organisms and need to be frequently cleaned.

[0006] Existing water inlet hole wave-dissipating devices mostly adopt flange bolt fixation or spring buckle connection, and there are the following defects: 1. Bolt installation requires the cooperation of multiple tools, and the underwater installation is difficult, taking more than 10 minutes; 2. The spring buckle is easily loosened under the impact of surges (tensile strength < 2000 N); 3. Lack of adaptive adjustment ability, and it is difficult to be compatible with the well wall thickness error (±5 mm). Summary of the Invention

[0007] Aiming at the problems pointed out in the above background art that the sensor collision caused by the water flow impact on the water inlet hole during typhoons affects the measurement accuracy of the thermohaline sensor, and the time-consuming of traditional bolt fixation and the insufficient tensile strength of the buckle structure, the present invention provides a wave-dissipating device for the water inlet hole of a thermohaline well in a tidal station. The device extends the water flow path through porous wave dissipation and an external elbow structure, and at the same time combines a diversion and energy dissipation design to ensure the smoothness of the water inlet hole and significantly reduce the wave energy.

[0008] To solve the above technical problems, the present invention adopts the following technical solutions to achieve: A wave-dissipating device for the water inlet hole of a thermohaline well in a marine tide gauge station, comprising an elbow main body, a flow guiding and energy dissipating component, and a threaded expansion fixing device, wherein: The elbow main body is an L-shaped tubular structure, the inlet end of which is fixed to the outer wall of the water inlet hole through the threaded expansion fixing device, and the outlet end is inclined downward; The flow guiding and energy dissipating component includes an annular porous wave-dissipating outer cover and a damping hole array. The annular porous wave-dissipating outer cover is sleeved at the outlet of the elbow main body, and the damping hole array is arranged on the outer wall of the elbow main body; The threaded expansion fixing device is composed of an external clamp, a threaded rotation driving mechanism, and an expansion mechanism. By externally rotating the screw, the expansion mechanism is driven to move radially along the well wall and expand, so as to realize rapid sealing and locking connection or disassembly with the well wall.

[0009] Further, The elbow main body is made of corrosion-resistant polyurethane composite polymer material, with a total length of 20 cm, bent into an L-shaped tubular structure at the middle position, the L-shaped bending angle is 30 - 45°, the inlet diameter matches the water inlet hole, and the outlet end is inclined downward by 30 - 45°, converting the horizontal wave kinetic energy into vertical eddy current to reduce the turbulence intensity.

[0010] The annular porous wave-dissipating outer cover is made of corrosion-resistant polyurethane composite polymer material, with a pore diameter of 3 - 5 mm and an opening ratio of 20%. It utilizes the wave breaking effect to initially dissipate energy to reduce the Reynolds number and suppress turbulence. [[ID=;19]]

[0011] The aperture of the damping hole array is 3 - 5 mm, and the opening ratio is 20%, so that part of the water flow overflows through the small holes on the outer wall to further dissipate energy.

[0012] The external clamp is an annular stainless steel shell, laser cut from 316L stainless steel. Its inner wall is provided with an anti-slip rubber pad and an annular sealing ring; the surface of the anti-slip rubber pad is provided with fishbone-shaped convex lines, and the static friction coefficient is ≥ 0.8; the inner diameter is adapted to the standard water inlet hole (Φ100 - 120 mm), and the rubber pad is vulcanized and bonded to the inner wall.

[0013] The threaded rotation driving mechanism includes a driving nut, a threaded rod, and an external knob handle; the external knob handle is fixedly connected to the outside of the driving nut for placing the driving nut underwater; the lead of the threaded rod is 100 mm, and the external knob handle rotates 720° to drive the expansion mechanism to move towards the well wall and expand until the elbow main body is fixed.

[0014] The expansion mechanism is an elastic annular aluminum alloy, sleeved at the inlet of the elbow main body. The outer ring of the expansion mechanism is covered with a polyurethane buffer layer, which can compensate for the deformation of the well wall of ±3 mm.

[0015] Furthermore, the surfaces of the elbow body, the flow guiding and energy dissipating component, and the threaded expansion fixing device are all coated with an environment-friendly anti-fouling coating to reduce the performance attenuation caused by biological attachment.

[0016] Through the above structure, the beneficial effects of the present invention are as follows: 1. By designing the elbow body, its downward outlet end can be detachably replaced with components of different downward angles, which can continuously optimize the anti-wave and water body exchange requirements; 2. Through the porous wave-dissipating outer cover structure, the anti-wave and water body exchange requirements are taken into account; 3. Flow velocity reduction: Under the condition of a wave height of 2 m, the flow velocity in the well is reduced from 0.8 m / s of the traditional structure to 0.2 m / s, the fluctuation of temperature and salinity data is reduced by 70%, and the water body exchange time is only extended by 15%; 4. Sensor protection: The eddy current intensity inside the wellbore is reduced by 80%, the displacement amplitude of the sensor is ≤ 2 cm, and the collision frequency of the sensor after installation is reduced by 95%; 5. Convenient installation, and the installation / dismantling can be completed within 5 minutes by a single person; 6. Strong environmental adaptability, and the combination of the expansion mechanism and the sealing ring realizes the IP68 protection level. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the device in the embodiment of the present invention; Figure 2 It is a schematic diagram of the structure of the threaded rotation driving mechanism in the embodiment of the present invention; Figure 3 It is a schematic diagram of the structure of the expansion mechanism in the embodiment of the present invention.

[0018] In the figure: 1. Elbow body 2. Porous wave-dissipating outer cover 3. Threaded rotation drive 4. Damping hole array 5. Expansion mechanism 6. External clamp 7. Temperature and salinity wellbore wall. Detailed Embodiments

[0019] To make the technical means and creative features achieved by the present invention easy to understand, the present invention will be further described below with reference to the drawings and embodiments. Embodiment

[0020] As Figure 1 described, a wave-dissipating device for the water inlet hole of a temperature and salinity well of a marine tide gauge station of the present invention is composed of an elbow body 1, a porous wave-dissipating outer cover 2, a threaded rotation drive 3, a damping hole array 4, an expansion mechanism 5, and an external clamp 6, wherein: The elbow main body 1 is made of corrosion-resistant polyurethane composite polymer material, with a total length of 20 cm. It is bent into an L-shaped tubular structure at the middle position, and the L-shaped bending angle is 30 - 45°. The diameter of the inlet end matches the water inlet hole, and it is fixed to the water inlet hole of the thermohaline wellbore wall through a threaded rotation drive mechanism and an expansion mechanism. The outlet end inclines downward at 30 - 45°, converting the horizontal wave kinetic energy into vertical eddy currents to reduce the turbulence intensity. The porous wave-dissipating outer cover 2 is made of corrosion-resistant polyurethane composite polymer material, with a pore diameter of 3 - 5 mm and an opening ratio of 20%. It is installed at the outlet of the elbow main body 1, and uses the wave-breaking effect to initially dissipate energy, so as to reduce the Reynolds number and suppress turbulence.

[0021] The damping hole array 4 is opened on the outer wall of the elbow main body 1, with a pore diameter of 3 - 5 mm and an opening ratio of 20%, allowing part of the water flow to overflow through the small holes on the outer wall to further dissipate energy.

[0022] The external clamp 6 is an annular stainless steel shell, formed by laser cutting of 316L stainless steel. Its inner wall is provided with an anti-slip rubber pad and an annular sealing ring; the surface of the anti-slip rubber pad is provided with fishbone-shaped convex lines, and the static friction coefficient ≥ 0.8; the inner diameter is adapted to the standard water inlet hole (Φ100 - 120 mm), and the rubber pad is vulcanized and bonded to the inner wall.

[0023] The threaded rotation drive mechanism 3 includes a drive nut, a threaded rod and an external knob handle; the external knob handle is fixedly connected to the outside of the drive nut for placing the drive nut underwater; the lead of the threaded rod is 100 mm, and the external knob handle rotates 720° to drive the expansion mechanism 5 to move and expand towards the well wall 7 until the elbow main body 1 is fixed.

[0024] The expansion mechanism 5 is an elastic annular aluminum alloy, sleeved on the inlet of the horizontal part of the elbow main body 1. The outer ring of the expansion mechanism 5 is covered with a polyurethane buffer layer, which can compensate for the deformation of the well wall by ±3 mm; the expansion mechanism 5 is driven to move and expand radially along the well wall through an external rotating screw to achieve rapid sealing, locking connection and disassembly with the well wall 7.

[0025] The surfaces of the above-mentioned elbow main body, the flow guiding and energy dissipating component and the threaded expansion fixing device are all coated with an environment-friendly anti-fouling coating to reduce the performance attenuation caused by biological attachment.

[0026] During operation: 1. The expansion mechanism 5 is sleeved on the inlet of the horizontal part of the elbow main body 1; 2. The external clamp 6 is fixed on the outer ring of the expansion mechanism 5; 3. The horizontal part of the elbow main body 1 extends into the water inlet hole, and the outlet of the elbow main body 1 faces downward; 4. Rotate the exposed knob handle clockwise to drive the expansion mechanism 5 to move and expand towards the well wall until the rubber pad fits tightly against the well wall and the elbow main body 1 is fixed in the water inlet hole; 5. Rotate the reverse-rotating exposed knob handle to quickly disassemble.

Claims

1. A wave-dissipating device for the water inlet hole of a thermohaline well in a marine tide gauge, characterized in that: It includes an elbow main body, a flow guiding and energy dissipating component, and a threaded expansion fixing device, where: The elbow main body is an L-shaped tubular structure, its inlet end is fixed to the outer wall of the water inlet hole through the threaded expansion fixing device, and the outlet end inclines downward; The flow guiding and energy dissipating component includes an annular porous wave-dissipating outer cover and a damping hole array. The annular porous wave-dissipating outer cover is sleeved at the outlet of the elbow main body, and the damping hole array is opened on the outer wall of the elbow main body; The threaded expansion fixing device consists of an external clamp, a threaded rotation driving mechanism, and an expansion mechanism. By rotating the external screw, the expansion mechanism is driven to move radially along the well wall and expand, realizing rapid sealing and locking connection or disassembly with the well wall.

2. The wave-dissipating device for the intake hole of the thermohaline well of a marine tide gauge according to claim 1, characterized in that: The total length of the elbow main body is 20 cm, the middle position is bent into an L-shaped tubular structure, the L-shaped bending angle is 30 - 45°, the inlet diameter matches the water inlet hole, and the outlet end inclines downward by 30 - 45°.

3. The wave-dissipating device for the intake hole of the thermohaline well of a marine tide gauge according to claim 1, wherein: The aperture of the annular porous wave-dissipating outer cover is 3 - 5 mm, and the porosity is 20%.

4. The wave-dissipating device for the water inlet hole of the thermohaline well of the marine tide gauge according to claim 1, characterized in that: The aperture of the damping hole array is 3 - 5 mm, and the porosity is 20%.

5. The wave-dissipating device for the intake hole of the thermohaline well of a marine tide gauge according to claim 1, wherein: The external clamp is an annular stainless steel shell, and its inner wall is provided with an anti-slip rubber pad and an annular sealing ring; the surface of the anti-slip rubber pad is provided with fishbone-shaped convex lines, and the static friction coefficient ≥ 0.8; the inner diameter is adapted to the standard water inlet hole, and the rubber pad is vulcanized and bonded to the inner wall.

6. The wave dissipation device for the water inlet hole of the thermohaline well of the marine tide gauge according to claim 1, wherein: The threaded rotation driving mechanism includes a driving nut, a threaded rod, and an external knob handle; the external knob handle is fixedly connected to the outside of the driving nut for placing the driving nut underwater; the lead of the threaded rod is 100 mm, and the external knob handle rotates 720° to drive the expansion mechanism to move towards the well wall and expand until the elbow main body is fixed.

7. The wave-dissipating device for the water inlet hole of the thermohaline well of the marine tide gauge according to claim 1, wherein: The expansion mechanism is an elastic annular aluminum alloy, which is sleeved at the inlet of the elbow main body, and the outer ring of the expansion mechanism is covered with a polyurethane buffer layer, which can compensate for the deformation of the well wall of ±3 mm.

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