Temperature-salinity-depth sensor and antifouling method thereof

Abstract

The invention discloses a temperature-salinity-depth sensor and an antifouling method thereof. The sensor comprises a watertight module, a measuring module, a supporting module, a pump body module and a protective cover. The protective cover is arranged outside the sensor, and the pump body module is adopted to continuously wash the temperature probe, the conductance cell and the flow guide water path, so that attachment and reproduction of suspended particles and fine microorganisms to the measurement module can be jointly inhibited from inside and outside; the temperature-salinity-depth sensor can reduce the impact and damage of stormy waves to an instrument under severe sea conditions, is further suitable for application observation in environments such as a shallow ocean surface layer with poor sea conditions and serious pollution, and solves the problems that an existing temperature-salinity-depth sensor is low in shallow ocean surface layer observation precision, difficult to clean and maintain, short in use and maintenance period and the like. According to the antifouling method of the temperature-salinity-depth sensor provided by the invention, the sensor is wrapped with the metal protective net, and the current is regularly applied, so that the whole sensor can be further protected, and adhesion of marine organisms is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of testing and measuring equipment, and in particular to a novel temperature-salinity-depth sensor and an anti-fouling method thereof. Background Art

[0002] Ocean temperature, salinity, and depth are the basic hydrological parameters of the marine environment. The observation data obtained using temperature, salinity, and depth sensors (also known as "temperature, salinity, and depth meters") are of great significance for marine scientific research, marine ecological environment monitoring and protection, marine aquaculture, and marine military environmental protection. However, the shallow surface of the ocean has sufficient sunlight, rich nutrients, and serious water pollution. The attachment of a large number of suspended particles and marine microorganisms will affect the observation accuracy of the temperature, salinity, and depth sensors. The growth of attached organisms such as oysters and barnacles also makes it very difficult to clean and maintain the sensors and internal measurement modules. In addition, the shallow surface of the ocean has large winds and waves, and the sea conditions are bad, which seriously restricts the service life of existing temperature, salinity, and depth sensors. Summary of the invention

[0003] The purpose of the present invention is to provide a novel temperature-salinity-depth sensor and an anti-fouling method thereof. By configuring a protective cover on the outside of the sensor and a built-in pump body module to continuously flush the temperature probe, the conductivity cell and the diversion waterway, the attachment and reproduction of suspended particles and fine microorganisms to the measurement module and the pipeline system can be inhibited. The measurement module is placed inside the protective cover, which can reduce the impact and damage of wind and waves on the instrument under severe sea conditions. Therefore, it can be suitable for application observation in environments such as the shallow surface of the ocean with poor sea conditions and serious pollution, so as to solve the problems of low observation accuracy, difficult cleaning and maintenance, and short maintenance cycle of the above-mentioned existing temperature-salinity-depth sensors in the shallow surface of the ocean.

[0004] To achieve the above-mentioned purpose, the present invention provides a temperature-salinity-depth sensor, comprising a watertight module, a measuring module, a supporting module, a pump module and a protective cover, wherein: the watertight module comprises a sealed shell, and a watertight connector electrically connected to an observation platform is provided on the sealed shell; the measuring module comprises a conductivity cell, a temperature probe and a pressure probe, and the conductivity cell, the temperature probe and the pressure probe are all arranged on the sealed shell, and the conductivity cell, the temperature probe and the pressure probe are all electrically connected to the watertight connector; the supporting module is arranged on the sealed shell, and the supporting module has a built-in diversion waterway, the diversion waterway has a water outlet and a water inlet, the conductivity cell and the temperature probe are both in communication with the diversion waterway, the pump module is arranged in the supporting module, and is used to provide circulation power for the water in the diversion waterway; the protective cover is arranged on the sealed shell to cover and protect the measuring module.

[0005] In some embodiments, the conductivity cell, the temperature probe, the pressure probe and the support module are arranged on the same side of the sealed shell, and the support module includes a support body, a pipeline connection structure 1, a pipeline connection structure 2 and a pipeline transfer structure, wherein: the support body is connected to the sealed shell, a water channel 1 is arranged in the support body, a first end of the pipeline connection structure 1 is connected to the sealed shell, and a second end is provided with the water outlet and the water inlet, a water channel 2 and a water channel 3 respectively connected to the water inlet and the water outlet are arranged in the pipeline connection structure 1, a water inlet end of the conductivity cell is connected to the water channel 2, a detection part of the temperature probe is embedded in the water channel 2, and the detection part of the temperature probe is located upstream of the conductivity cell, a water outlet end of the conductivity cell is connected to the first end of the water channel 1 through the pipeline transfer structure, and a second end of the water channel 1 is connected to the water channel 3 through the pipeline connection structure 2; and the pump body module is arranged on the water channel 1.

[0006] In some embodiments, the second end of the pipeline connection structure 1 is a planar structure, and the water inlet and the water outlet are arranged flush.

[0007] In some embodiments, the pump body module includes a pump chamber, an impeller and a drive motor, the pump chamber is arranged between the sealed shell and the supporting body, and the pump chamber is connected to the second end of the water channel; the impeller is located in the pump chamber, the drive motor is arranged on the sealed shell and connected to the impeller, and the drive motor is used to drive the impeller to rotate.

[0008] In some implementations, the protective cover can cover both the measuring module and the supporting module.

[0009] In some embodiments, the pressure probe is disposed in the sealed shell, and a pressure buffer plug connecting the pressure probe and the outside is embedded in the shell wall of the sealed shell. The pressure buffer plug can introduce external water into the sealed shell to make the pressure probe contact with the external water.

[0010] In some embodiments, the protective cover is provided with a plurality of water-permeable holes for water to pass through.

[0011] In some embodiments, the sealed housing includes a columnar housing, a mounting end cover is disposed at the first end of the columnar housing, the watertight connector is disposed on the mounting end cover, a probe end cover is disposed at the second end of the columnar housing, the conductivity cell, the temperature probe and the pressure probe are all disposed on the probe end cover, and the support module is located at the second end of the columnar housing and is connected to the probe end cover.

[0012] In some embodiments, at least one of the protective cover, the columnar housing, the mounting end cover and the probe end cover is processed from titanium alloy material, and a hydrophobic and corrosion-resistant coating is sprayed on the surface of at least one of the protective cover, the columnar housing, the mounting end cover and the probe end cover.

[0013] In some embodiments, a slow-release anti-fouling plug is disposed at a port of at least one of the water outlet and the water inlet.

[0014] In some implementations, the temperature-salinity-depth sensor is also wrapped with a metal protective net on the outside.

[0015] The present invention also proposes an anti-fouling method for the temperature-salinity depth sensor described in any of the above items, wrapping a metal protective net on the outside of the temperature-salinity depth sensor, and applying current to the metal protective net during the measurement interval of the temperature-salinity depth sensor to slow down the passivation speed of the metal protective net.

[0016] Compared with the prior art, the present invention has achieved the following technical effects: the temperature-salinity-depth sensor proposed by the present invention can inhibit the attachment and reproduction of suspended particles and tiny microorganisms to the measurement module and the pipeline system by configuring a protective cover on the outside of the sensor and a built-in pump body module to continuously flush the temperature probe, the conductivity cell and the diversion waterway. The measurement module is placed inside the protective cover, which can reduce the impact and damage of wind and waves on the instrument under severe sea conditions, and thus can be suitable for application observations in environments such as the shallow surface of the ocean with poor sea conditions and serious pollution, so as to solve the problems of low observation accuracy, difficult cleaning and maintenance, and short maintenance cycle of the existing temperature-salinity-depth sensor in the shallow surface of the ocean.

[0017] In some technical solutions disclosed in the present invention, the water inlet and outlet of the sensor are located at the same horizontal plane, and both are equipped with slow-release anti-fouling plugs, which can inhibit the reproduction and attachment of microorganisms near the water outlet and water inlet.

[0018] In some technical solutions disclosed in the present invention, the built-in pump module can continuously flush the temperature probe, the conductivity cell and the diversion waterway to prevent the attachment and reproduction of suspended particles and tiny microorganisms to the measuring probe and the piping system.

[0019] In some technical solutions disclosed in the present invention, the pump body module is built-in through an integrally formed supporting main body structure, and the entire supporting module is installed inside the protective cover, which can effectively prevent the impact and damage of wind and waves on the sensor under severe sea conditions and extend the service life.

[0020] In some technical solutions disclosed in the present invention, the columnar shell, probe end cover, mounting end cover and protective cover of the sensor are all made of titanium alloy materials, and the surface is sprayed with a hydrophobic and seawater corrosion-resistant Teflon coating, which can effectively prevent the attachment of marine organisms and facilitate subsequent cleaning and maintenance.

[0021] The anti-fouling method of the temperature-salinity-depth sensor proposed by the present invention can further protect the entire sensor and reduce the attachment of marine organisms by wrapping a metal protective net outside the sensor. In addition, in order to further reduce the passivation speed of the metal protective net, a weak current can be regularly applied within the sensor measurement interval to extend the service life of the metal protective net and improve its protection strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 The figure is a schematic diagram of the overall structure of the temperature-salinity-depth sensor disclosed in an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the partial decomposition structure of the temperature-salinity-depth sensor disclosed in an embodiment of the present invention.

[0025] Figure 3 The diagram is a schematic diagram of the structure and installation of a support module disclosed in an embodiment of the present invention.

[0026] Figure 4 for Figure 3 Schematic diagram of the rear view perspective.

[0027] Figure 5 for Figure 3 Schematic diagram of the local decomposition structure.

[0028] Figure 6 for Figure 3 Schematic diagram of the explosion structure.

[0029] Figure 7 for Figure 3 Schematic diagram of the explosion structure after removing the probe end cover.

[0030] Figure 8 This is a schematic structural diagram of a watertight module disclosed in an embodiment of the present invention.

[0031] Fig. 9 The figure is a schematic diagram of the internal cross-sectional structure of the probe end cover disclosed in the embodiment of the present invention.

[0032] In the figure, the reference numerals are: 100, temperature-salinity-depth sensor; 1, watertight module; 11, sealed housing; 111, columnar housing; 112, mounting end cover; 113, probe end cover; 1131, flow channel; 12, watertight connector; 2, measuring module; 21, conductivity cell; 22, temperature probe; 23, pressure probe; 231, pressure buffer plug; 3, supporting module; 31, water outlet; 32, water inlet; 33, supporting body; 331, water channel one; 34, pipeline connection structure one; 35, pipeline connection structure two; 36, pipeline transfer structure; 4, pump body module; 41, pump chamber; 42, impeller; 43, drive motor; 5, protective cover; 51, water permeable hole; 6, slow-release anti-fouling plug; 7, mounting block. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] One of the purposes of the present invention is to provide a novel temperature-salinity-depth sensor, which can inhibit the attachment and reproduction of suspended particles and tiny microorganisms to the measurement module and the pipeline system by configuring a protective cover on the outside of the sensor and a built-in pump body module to continuously flush the temperature probe, the conductivity cell and the diversion waterway. The measurement module is placed inside the protective cover, which can reduce the impact and damage of wind and waves on the instrument under severe sea conditions, and thus can be suitable for application observations in environments such as the shallow surface of the ocean with poor sea conditions and serious pollution, so as to solve the problems of low observation accuracy, difficult cleaning and maintenance, and short maintenance cycle of the above-mentioned existing temperature-salinity-depth sensors in the shallow surface of the ocean.

[0035] Another object of the present invention is to provide an anti-fouling method for the above-mentioned temperature-salinity-depth sensor.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] like Figure 1As shown, this embodiment proposes a novel temperature-salinity-depth sensor 100, which mainly includes a watertight module 1, a measuring module 2, a supporting module 3, a pump module 4 and a protective cover 5. Among them, the watertight module 1 includes a sealed housing 11, and a watertight connector 12 that can be electrically connected to the observation platform is arranged on the sealed housing 11. The sealed housing 11 has a cavity inside, which can be used for the measurement circuit board and cables of each component of the measurement module 2. The sealed housing 11 mainly plays the role of sealing and waterproofing the electrical part of the temperature-salinity-depth sensor 100. The measurement module 2 includes a conductivity cell 21, a temperature probe 22 and a pressure probe 23. The conductivity cell 21, the temperature probe 22 and the pressure probe 23 are all arranged on the sealed housing 11, and the conductivity cell 21, the temperature probe 22 and the pressure probe 23 are all electrically connected to the watertight connector 12 through the measurement circuit board. The conductivity cell 21, the temperature probe 22 and the pressure probe 23 are all conventional finished products, and the specific structure and detection function principle are not repeated here. The support module 3 is arranged on the sealed housing 11, and the support module 3 has a built-in diversion waterway, the diversion waterway has a water outlet 31 and a water inlet 32, the detection parts of the conductivity cell 21 and the temperature probe 22 are both connected to the diversion waterway to detect the conductivity and temperature of the water in the diversion waterway, and the pressure probe 23 is generally arranged in the sealed housing 11, and a pressure buffer plug 231 is embedded on the shell wall of the sealed housing 11, and a channel is opened in the pressure buffer plug 231 to connect the outside and the pressure probe 23, and the pressure buffer plug 231 can introduce external water into the sealed housing 11 through its internal channel, so that the pressure probe 23 contacts with the external water to complete the pressure measurement. The pump module 4 is arranged in the support module 3, and is used to provide circulation power for the water in the diversion waterway, so that the external water flows into the diversion waterway through the water inlet 32, and flows to the water outlet 31 through the diversion waterway, so as to realize the continuous circulation and replacement of the water in the diversion waterway. During the circulation and replacement of the water in the diversion waterway, the conductivity cell 21 and the temperature probe 22 continuously detect the corresponding parameters of the circulating water sample entering the diversion waterway. The protective cover 5 is arranged on the sealed housing 11, and the measuring module 2 is placed inside the protective cover 5, and the protective cover 5 can cover and protect the measuring module 2.

[0038] In some embodiments, Figure 1 to Figure 8As shown, preferably, the conductivity cell 21, the temperature probe 22, the pressure probe 23 and the support module 3 are all arranged on the same side of the sealed housing 11, and the support module 3 includes a support body 33, a pipeline connection structure 1 34, a pipeline connection structure 2 35 and a pipeline transfer structure 36, wherein: the support body 33 is connected to the sealed housing 11, a single waterway 1 331 is arranged in the support body 33, a first end of the pipeline connection structure 1 34 is connected to the sealed housing 11, a water outlet 31 and a water inlet 32 ​​are arranged at the second end of the pipeline connection structure 1 34, a waterway 2 and a waterway 3 which are respectively connected to the water inlet 32 ​​and the water outlet 31 are arranged in the pipeline connection structure 1 34, and the waterway 2 and the waterway 3 are connected in the pipeline connection structure 1 The water inlet of the conductivity cell 21 is connected to the water channel 2, and the detection part of the temperature probe 22 is embedded in the water channel 2, and the detection part of the temperature probe 22 is located upstream of the conductivity cell 21, so that the seawater sample entering through the water inlet 32 ​​is first detected by the temperature probe 22, and then detected by the conductivity cell 21; at the same time, the water outlet of the conductivity cell 21 is connected to the first end (water inlet end) of the water channel 1 331 through the pipeline adapter structure 36, and the second end (water outlet end) of the water channel 1 331 is connected to the water channel 3 through the pipeline connection structure 2 35. The water sample detected by the conductivity cell 21 is discharged through the pipeline adapter structure 36, the water channel 1 331, the water channel 3 and the water outlet 31 in sequence. The pipeline adapter structure 36 has the function of adjusting the flow direction of the water flow, such as Figure 6 and Figure 7 As shown, the pipeline transfer structure 36 is an end plate structure, a one-way flow channel is arranged inside it, and an inlet and an outlet are arranged on its surface respectively connected to the two ends of the one-way flow channel. The inlet of the pipeline transfer structure 36 is sealed and connected to the water outlet end of the conductivity cell 21, and the outlet of the pipeline transfer structure 36 is sealed and connected to the first end (water inlet end) of the water channel 1 331. Figure 3 and Figure 4 As shown, the conductivity cell 21 and the waterway 1 331 are generally arranged in parallel, so the pipeline adapter structure 36 can make the water flowing to the water outlet of the conductivity cell 21 flow back to the waterway 1 331 to achieve the water flow diversion function. The pump body module 4 is generally arranged on the waterway 1 331 to provide power for the circulation of water samples in the diversion waterway to ensure that new water samples enter and are detected in real time. The pipeline adapter structure 36 can be reinforced with the support body 33 by screws and other components, and the inlet and outlet of the pipeline adapter structure 36 can be provided with O-rings to achieve a sealed connection with the conductivity cell 21 and the waterway 1 331.

[0039] In some embodiments, Figure 2~Figure 5As shown, the second end of the preferred pipeline connection structure 34 is a planar structure, and the water inlet 32 ​​and the water outlet 31 are arranged flush. The water inlet 32 ​​and the water outlet 31 are flush, which can make the water pressure of the inlet and outlet consistent, avoid the flow rate change caused by the pressure difference, ensure that the water flows through the sensor at a uniform speed, reduce the interference of the unstable water flow on the conductivity and temperature measurement, and help improve the accuracy and reliability of the measurement data.

[0040] In some embodiments, the pump module 4 specifically includes a pump chamber 41, an impeller 42 and a drive motor 43. The pump chamber 41 is disposed between the sealed housing 11 and the support body 33, and the pump chamber 41 is connected to the second end of the waterway 1 331; the impeller 42 is located in the pump chamber 41, and the drive motor 43 is fixedly disposed on the sealed housing 11 by screws and connected to the impeller 42. The drive motor 43 is used to drive the impeller 42 to rotate, thereby generating a negative pressure at the second end (water outlet end) of the waterway 1 331, and promoting the flow of water to the water outlet 31. It should be noted that the drive motor 43 is sealed with the sealed housing 11, the pump chamber 41 is disposed at the port of the waterway 1 331, and one side end face of the pump chamber 41 is sealed and connected to the second end (water outlet end) of the waterway 1 331, and the other side end face of the pump chamber 41 is sealed and buckled with the sealed housing 11, and radial sealing can be achieved through an O-ring. Based on this, a sealed chamber is formed between the pump chamber 41 and the sealed housing 11, and the impeller 42 is located in the sealed chamber; in order to ensure that the water flows smoothly to the waterway 3, it is preferred that one end of the pipeline connection structure 2 35 is connected to the pump chamber 41, and the other end of the pipeline connection structure 2 35 is connected to the waterway 3. Based on this, the water in the waterway 1 331 passes through the pump chamber 41, the pipeline connection structure 2 35 and the waterway 3 in sequence to reach the water outlet 31. The pipeline connection structure 2 35 is preferably a single-tube structure, one end of which can be threadedly connected to the pump chamber 41, and the other end is plugged into the waterway 3, and radial sealing is achieved through an O-ring.

[0041] In some embodiments, the impeller 42 is mounted on the pump shaft and fixed by a retaining ring, and the magnetic ring is mounted on the impeller 42 and fixed by gluing. When the drive motor 43 is powered on, the magnetic drive rotor is driven to rotate, thereby driving the impeller 42 to rotate and pumping out the water in the waterway. In actual operation, the drive motor 43 and the magnetic drive rotor can be reliably isolated from the seawater by configuring a sealing isolation sleeve and other structures on the sealed housing 11.

[0042] In some embodiments, the protective cover 5 can cover the measuring module 2 and the supporting module 3 at the same time, especially the water outlet 31 and the water inlet 32 ​​of the supporting module 3, which are located inside the protective cover 5. Through the protective effect of the protective cover 5, it can effectively inhibit the attachment and reproduction of suspended particles and fine microorganisms to the measuring module and the pipeline system, and reduce the impact and damage of wind and waves on the instrument under severe sea conditions. It should be noted that there is an installation gap between the protective cover 5 and the measuring module 2 and the supporting module 3. Therefore, although the protective cover 5 can block the measuring module 2 and the supporting module 3, the installation gap is sufficient to allow seawater to enter, ensuring the normal detection of seawater by the measuring module 2.

[0043] In some embodiments, in order to ensure that new water samples can smoothly enter the water inlet 32 ​​and that the tested water samples can smoothly be discharged from the water outlet 31 , it is preferred that a plurality of water-permeable holes 51 for water to pass through are provided on the protective cover 5 .

[0044] In some embodiments, the sealed housing 11 includes a columnar housing 111, a first end of the columnar housing 111 is sealed with a mounting end cap 112, the watertight connector 12 is sealed on the mounting end cap 112, a second end of the columnar housing 111 is sealed with a probe end cap 113, and the conductivity cell 21, the temperature probe 22 and the pressure probe 23 are all disposed on the probe end cap 113. The pressure probe 23 and the main body of the drive motor 43 are both embedded in the probe end cap 113, and the pressure probe 23 and the main body of the drive motor 43 are both reliably sealed with the probe end cap 113 through an O-ring; at the same time, as Fig. 9As shown, the side wall of the probe end cap 113 is provided with a flow channel 1131 connected to the detection part of the pressure probe 23 inside the probe end cap 113. The port of the flow channel 1131 is plugged with the aforementioned pressure buffer plug 231. The pressure buffer plug 231 can guide external water to the detection part of the pressure probe 23 through its internal channel to perform pressure detection. The pressure buffer plug 231 can buffer the impact of water flow on the basis of realizing the drainage function, reduce the damage caused by the impact of water flow to the pressure probe 23 and the measurement noise; at the same time, the pressure buffer plug 231 can inhibit the reproduction and attachment of microorganisms near the port of the flow channel 1131. The main body of the temperature probe 22 is embedded in the probe end cover 113, and radial sealing is achieved through an O-ring. The detection part of the temperature probe 22 is located outside the probe end cover 113, which is convenient for extending into the water channel 2. The conductivity cell 21 is fixed to the outside of the probe end cover 113 through a related support structure and is parallel to the axial direction of the probe end cover 113. The conductivity cell 21 and the probe end cover 113 are radially sealed through two O-rings, and the conductivity cell 21 and the water channel 2 are end-face sealed through one O-ring. The pipeline connection structure 1 34 is arranged outside the probe end cover 113, and the water channel 2 and the water channel 3 in the pipeline connection structure 1 34 are isolated from the inside of the probe end cover 113. The connection between the pipeline connection structure 1 34 and the probe end cover 113 can be radially sealed through two O-rings. The support body 33 of the support module 3 is located at the second end of the columnar housing 111, and is connected to the end of the probe end cover 113 away from the mounting end cover 112 through connecting components such as screws.

[0045] In some embodiments, at least one of the protective cover 5, the columnar housing 111, the mounting end cap 112 and the probe end cap 113 is made of titanium alloy material, and at least one of the protective cover 5, the columnar housing 111, the mounting end cap 112 and the probe end cap 113 is sprayed with a hydrophobic and corrosion-resistant coating on its surface.

[0046] In some embodiments, a slow-release anti-fouling plug 6 is disposed at the port of at least one of the water outlet 31 and the water inlet 32 ​​, and the slow-release anti-fouling plug 6 can inhibit the reproduction and attachment of microorganisms near the water outlet 31 and the water inlet 32 ​​.

[0047] In some embodiments, a metal protective net can be provided on the outside of the temperature-salinity-depth sensor 100 to further protect the entire sensor and reduce the attachment of marine organisms. A current can be applied to the metal protective net during the measurement interval of the temperature-salinity-depth sensor 100 to slow down the passivation speed of the metal protective net. The metal protective net is preferably a copper protective net with a bactericidal effect.

[0048] The working principle of this scheme is as follows: seawater enters from the water inlet 32, flows through the temperature probe 22, the conductivity cell 21 in sequence, passes through the pipeline transfer structure 36, enters the waterway 1 331, and then enters the pump chamber 41. The impeller 42 rotates to generate negative pressure, and finally pumps it into the pipeline connection structure 2 32, and finally is discharged through the water outlet 31 of the pipeline connection structure 1 34.

[0049] The protective cover 5 is fixed to the probe end cover 113 by a plurality of titanium screws, and covers the entire measuring module 2 and the supporting module 3 inside.

[0050] In the observation of the shallow surface of the ocean with complex sea conditions, serious environmental pollution and rich microorganisms, the temperature, salinity and depth sensor 100 of this scheme is fixed to the observation platform through the mounting block 7 and the mounting end cover 112, and the watertight connector 12 can be connected to the platform control system through a watertight cable for data observation.

[0051] The above-mentioned temperature-salinity-depth sensor 100 can suppress the attachment and reproduction of suspended particles and fine microorganisms to the measurement module and the pipeline system from both inside and outside by configuring a protective cover 5 outside the sensor and using a built-in pump body module to continuously flush the temperature probe, conductivity cell and diversion waterway. The measurement module and the support module are all placed inside the protective cover, which can reduce the impact and damage of wind and waves on the instrument under severe sea conditions, and thus can be suitable for application observation in environments such as the shallow surface of the ocean with poor sea conditions and serious pollution, so as to solve the problems of low observation accuracy, difficult cleaning and maintenance, and short maintenance cycle of existing temperature-salinity-depth sensors in the shallow surface of the ocean. The advantages and beneficial effects of the temperature-salinity-depth sensor 100 are as follows: (1) The water inlet and outlet of the sensor are located at the same horizontal plane, and slow-release anti-fouling plugs are installed on both to suppress the reproduction and attachment of microorganisms near the water inlet and outlet.

[0052] (2) The built-in pump module can continuously flush the temperature probe, conductivity cell and diversion water channel to prevent suspended particles and fine microorganisms from adhering to and growing on the measuring probe and piping system.

[0053] (3) The pump module is built into the integrally formed support main structure, and the entire support module is installed inside the protective cover, which can effectively prevent the impact and damage of wind and waves on the sensor under severe sea conditions and extend its service life.

[0054] (4) The sensor's cylindrical housing, probe end cap, mounting end cap and protective cover are all made of titanium alloy. The surface is sprayed with a hydrophobic and seawater-corrosion-resistant Teflon coating, which can effectively prevent the attachment of marine organisms and facilitate subsequent cleaning and maintenance.

[0055] (5) In seriously polluted sea areas, the entire sensor (including all parts) can be wrapped with a copper mesh with bactericidal properties and regularly maintained and replaced to further protect the entire sensor and reduce the attachment of marine organisms. In addition, to further reduce the passivation rate of the copper mesh, the cylindrical housing, mounting end cap, and probe end cap can be used as titanium electrodes, and a weak current can be applied regularly during the sensor measurement interval.

[0056] (6) In the actual deployment process, for application environments with sediments greater than 200 NTU, the watertight connector end of the sensor can be installed downward to reduce the amount of sediment sucked into the water inlet. In addition, a small hole with a diameter of 1.5 mm is set in the center of the pipe of the pipe adapter structure, which is also convenient for measuring the discharge of bubbles, oil and fine microorganisms in the water mass, thereby improving the measurement accuracy.

[0057] (7) The sensor of this solution adopts modular design in all parts and has a compact structure. Its external dimensions are similar to those of similar instruments without the pump module, and its installation and fixing interfaces are consistent, so it can be directly replaced and upgraded in situ.

[0058] (8) The maximum pressure-resistant depth of the sensor in this solution is 7000 meters. The inductive coupling transmission module can be integrated on the side of the installation end cover, or a self-contained low-power mode can be selected for deep-depth and fixed-point observation on platforms such as buoys.

[0059] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0060] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A temperature-salinity-depth sensor, characterized in that: The invention comprises a watertight module (1), a measuring module (2), a supporting module (3), a pump module (4) and a protective cover (5), wherein: the watertight module (1) comprises a sealed housing (11), and the sealed housing (11) is provided with a watertight connector (12) capable of being electrically connected to an observation platform; the measuring module (2) comprises a conductivity cell (21), a temperature probe (22) and a pressure probe (23), and the conductivity cell (21), the temperature probe (22) and the pressure probe (23) are all provided on the sealed housing (11), and the conductivity cell (21), the temperature probe (22) and the pressure probe (23) are and the pressure probe (23) are both electrically connected to the watertight connector (12); the support module (3) is arranged on the sealed housing (11), and the support module (3) has a built-in diversion waterway, the diversion waterway has a water outlet (31) and a water inlet (32), the conductivity cell (21) and the temperature probe (22) are both connected to the diversion waterway, the pump module (4) is arranged in the support module (3) and is used to provide circulation power for the water in the diversion waterway; the protective cover (5) is arranged on the sealed housing (11) to cover and protect the measuring module (2).

2. The temperature-salinity-depth sensor according to claim 1, characterized in that: The conductivity cell (21), the temperature probe (22), the pressure probe (23) and the support module (3) are arranged on the same side of the sealed housing (11); the support module (3) comprises a support body (33), a first pipeline connection structure (34), a second pipeline connection structure (35) and a pipeline transfer structure (36); wherein: the support body (33) is connected to the sealed housing (11); a first waterway (331) is arranged in the support body (33); a first end of the first pipeline connection structure (34) is connected to the sealed housing (11); a second end of the first pipeline connection structure (34) is provided with the water outlet (31) and the water inlet (32); the first pipeline connection structure (34) is provided with a first waterway (331); A water channel 2 and a water channel 3 are provided in the first connection structure (34), which are respectively connected to the water inlet (32) and the water outlet (31); the water inlet end of the conductivity cell (21) is connected to the water channel 2; the detection part of the temperature probe (22) is embedded in the water channel 2, and the detection part of the temperature probe (22) is located upstream of the conductivity cell (21); the water outlet end of the conductivity cell is connected to the first end of the first water channel (331) through the pipeline adapter structure (36); the second end of the first water channel (331) is connected to the water channel 3 through the second pipeline connection structure (35); and the pump body module (4) is provided on the first water channel (331).

3. The temperature-salinity-depth sensor according to claim 2, characterized in that: The second end of the first pipe connection structure (34) is a planar structure, and the water inlet (32) and the water outlet (31) are arranged flush with each other.

4. The temperature-salinity-depth sensor according to claim 2 or 3, characterized in that: The pump body module (4) comprises a pump chamber (41), an impeller (42) and a drive motor (43); the pump chamber (41) is arranged between the sealed shell (11) and the supporting body (33), and the pump chamber (41) is connected to the second end of the water channel 1 (331); the impeller (42) is located in the pump chamber (41), the drive motor (43) is arranged on the sealed shell (11) and is connected to the impeller (42), and the drive motor (43) is used to drive the impeller (42) to rotate.

5. The temperature-salinity-depth sensor according to claim 2 or 3, characterized in that: The protective cover (5) can cover the measuring module (2) and the supporting module (3) at the same time.

6. The temperature-salinity-depth sensor according to any one of claims 1 to 3, characterized in that: The protective cover (5) is provided with a plurality of water-permeable holes (51) for water to pass through.

7. The temperature-salinity-depth sensor according to any one of claims 1 to 3, characterized in that: The sealed housing (11) comprises a columnar housing (111); a mounting end cover (112) is arranged at the first end of the columnar housing (111); the watertight connector (12) is arranged on the mounting end cover (112); a probe end cover (113) is arranged at the second end of the columnar housing (111); the conductivity cell (21), the temperature probe (22) and the pressure probe (23) are all arranged on the probe end cover (113); and the support module (3) is located at the second end of the columnar housing (111) and is connected to the probe end cover (113).

8. The temperature-salinity-depth sensor according to claim 7, characterized in that: At least one of the protective cover (5), the columnar housing (111), the mounting end cover (112) and the probe end cover (113) is processed from a titanium alloy material, and a hydrophobic and corrosion-resistant coating is sprayed on a surface of at least one of the protective cover (5), the columnar housing (111), the mounting end cover (112) and the probe end cover (113).

9. The temperature-salinity-depth sensor according to any one of claims 1 to 3, characterized in that: A slow-release anti-fouling plug (6) is arranged at the port of at least one of the water outlet (31) and the water inlet (32).

10. An anti-fouling method for a temperature-salinity-depth sensor according to any one of claims 1 to 9, characterized in that: A metal protection net is wrapped around the outside of the temperature-salinity-depth sensor (100), and a current is applied to the metal protection net during the measurement interval of the temperature-salinity-depth sensor (100) to slow down the passivation speed of the metal protection net.

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