A thermosalinograph and its antifouling method

Abstract

The present invention discloses a thermosalinograph and an anti-fouling method thereof. The sensor includes a watertight module, a measurement module, a support module, a pump body module, and a protective cover. By configuring a protective cover outside the sensor and using the pump body module to continuously flush the temperature probe, the conductivity cell, and the water guiding path, it is possible to jointly inhibit the attachment and reproduction of suspended particles and small microorganisms to the measurement module from both inside and outside. The measurement module and the support module are both 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 is suitable for application observations in environments such as the shallow ocean layer with poor sea conditions and serious pollution, so as to solve the problems of low observation accuracy, difficult cleaning and maintenance, and short service and maintenance cycle of existing thermosalinographs in the shallow ocean layer. The anti-fouling method of the thermosalinograph 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 and applying current regularly.

Description

Technical Field

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

[0002] Ocean temperature, salinity, and depth are the basic hydrological parameters of the ocean environment. The observational data obtained by using a thermosalinograph sensor (also known as a "thermosalinograph") is of great significance for marine scientific research, marine ecological environment monitoring and protection, marine aquaculture, and marine military environmental support. However, in the shallow ocean layer, there is sufficient light, rich nutrients, and relatively serious water pollution. The attachment of a large number of suspended particles and marine microorganisms will affect the observational accuracy of the thermosalinograph sensor. The growth of attached organisms such as oysters and barnacles also causes great difficulties in the cleaning and maintenance of the sensor and the internal measurement module. In addition, the wind and waves are relatively large in the shallow ocean layer, and the sea conditions are harsh, which severely restricts the service life of existing thermosalinograph sensors. Summary of the Invention

[0003] The purpose of the present invention is to provide a novel thermosalinograph sensor and an anti-fouling method thereof. By configuring a protective cover outside the sensor and internally installing a pump body module to continuously flush the temperature probe, conductivity cell, and water guiding path, the attachment and reproduction of suspended particles and tiny microorganisms to the measurement module and 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 harsh sea conditions. Furthermore, it can be applied to observations in environments such as the shallow ocean layer with poor sea conditions and relatively serious pollution, so as to solve the problems of low observational accuracy, difficult cleaning and maintenance, and short service and maintenance cycles of existing thermosalinograph sensors in the shallow ocean layer.

[0004] To achieve the above purpose, the present invention provides a thermosalinograph sensor, which includes a watertight module, a measurement module, a support module, a pump body module, and a protective cover, wherein: the watertight module includes a sealed housing, and a watertight connector capable of being electrically connected to an observation platform is arranged on the sealed housing; the measurement module includes a conductivity cell, a temperature probe, and a pressure probe. The conductivity cell, the temperature probe, and the pressure probe are all arranged on the sealed housing, and the conductivity cell, the temperature probe, and the pressure probe are all electrically connected to the watertight connector; the support module is arranged on the sealed housing, and a water guiding path is internally arranged in the support module. The water guiding path has a water outlet and a water inlet. The conductivity cell and the temperature probe are both communicated with the water guiding path. The pump body module is arranged in the support module and is used to provide circulating power for the water in the water guiding path; the protective cover is arranged on the sealed housing to cover and protect the measurement module.

[0005] In some embodiments, the conductivity cell, the temperature probe, the pressure probe, and the support module are disposed on the same side of the sealed housing. The support module includes a support body, a pipeline connection structure I, a pipeline connection structure II, and a pipeline transfer structure, where: the support body is connected to the sealed housing, and a waterway I is provided inside the support body; the first end of the pipeline connection structure I is connected to the sealed housing, and the second end is provided with the water outlet and the water inlet. A waterway II and a waterway III that are respectively communicated with the water inlet and the water outlet are provided inside the pipeline connection structure I. The water inlet end of the conductivity cell is communicated with the waterway II, the detection part of the temperature probe is embedded in the waterway II, and the detection part of the temperature probe is located upstream of the conductivity cell. The water outlet end of the conductivity cell is communicated with the first end of the waterway I through the pipeline transfer structure, and the second end of the waterway I is communicated with the waterway III through the pipeline connection structure II; the pump body module is disposed on the waterway I.

[0006] In some embodiments, the second end of the pipeline connection structure I 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 driving motor. The pump chamber is disposed between the sealed housing and the support body and is communicated with the second end of the waterway I; the impeller is located inside the pump chamber, the driving motor is disposed on the sealed housing and is connected to the impeller, and the driving motor is used to drive the impeller to rotate.

[0008] In some embodiments, the protective cover can simultaneously cover the measurement module and the support module.

[0009] In some embodiments, the pressure probe is disposed inside the sealed housing, and a pressure buffer plug that communicates the pressure probe with the outside is embedded in the housing wall of the sealed housing. The pressure buffer plug can introduce external water into the sealed housing so that the pressure probe contacts the external water.

[0010] In some embodiments, a plurality of water-permeable holes for water to pass through are formed in the protective cover.

[0011] In some embodiments, the sealed housing includes a columnar housing. An installation end cover is provided at the first end of the columnar housing, the watertight connector is disposed on the installation end cover, a probe end cover is provided 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 cylindrical 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 cylindrical 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 embodiments, the temperature-salinity-depth sensor is further wrapped with a metal protective net.

[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 around 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 rate of the metal protective net.

[0016] Compared with the prior art, the present invention achieves the following technical effects: the temperature, salinity and depth sensor proposed in the present invention, by configuring a protective cover on the outside of the sensor and a built-in pump module to continuously flush the temperature probe, conductivity cell and diversion waterway, can inhibit the attachment and reproduction of suspended particles and tiny microorganisms to the measurement module and the piping system. 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 relatively serious pollution, thereby solving the problems of low observation accuracy, difficult cleaning and maintenance, and short maintenance cycle of existing temperature, salinity and depth sensors 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 are both equipped with slow-release anti-fouling plugs, which can inhibit the growth and attachment of microorganisms near the water inlet and outlet.

[0018] In some technical solutions disclosed in the present invention, a built-in pump module can continuously flush the temperature probe, conductivity cell and diversion water channel to prevent suspended particles and tiny microorganisms from adhering to and multiplying on the measuring probe and piping system.

[0019] In some technical solutions disclosed in the present invention, the pump body module is built into an integrally formed supporting main 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 its service life.

[0020] In some technical solutions disclosed in the present invention, the sensor's cylindrical housing, probe end cover, mounting end cover and protective cover 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 above-mentioned thermosalinograph sensor proposed by the present invention can further protect the entire sensor by wrapping a metal protection net outside the sensor, reducing the attachment of marine organisms. In addition, to further reduce the passivation speed of the metal protection net, a weak current can be applied regularly during the measurement interval of the sensor to extend the service life of the metal protection net and improve its protection strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the thermosalinograph sensor disclosed in the embodiments of the present invention.

[0024] Figure 2 It is a schematic diagram of the partial exploded structure of the thermosalinograph sensor disclosed in the embodiments of the present invention.

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

[0026] Figure 4 For Figure 3 The rear view perspective schematic diagram.

[0027] Figure 5 For Figure 3 The partial exploded structure schematic diagram.

[0028] Figure 6 For Figure 3 The exploded structure schematic diagram.

[0029] Figure 7 For Figure 3 The exploded structure schematic diagram after removing the probe end cap.

[0030] Figure 8 It is a schematic diagram of the structure of the watertight module disclosed in the embodiments of the present invention.

[0031] Figure 9 It is a schematic diagram of the internal sectional structure of the probe end cap disclosed in the embodiments of the present invention.

[0032] In the figure, the reference numerals are: 100, temperature-salinity-depth sensor; 1, watertight module; 11, sealed housing; 111, cylindrical 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, support module; 31, water outlet; 32, water inlet; 33, support body; 331, water channel 1; 34, pipeline connection structure 1; 35, pipeline connection structure 2; 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 objectives of the present invention is to provide a novel temperature, salinity, and depth sensor. By configuring a protective cover on the outside of the sensor and using a built-in pump module to continuously flush the temperature probe, conductivity cell, and diversion waterway, the sensor can inhibit the attachment and reproduction of suspended particles and small microorganisms to the measurement module and piping system. The measurement module is placed inside the protective cover, which can reduce the impact and damage to the instrument caused by wind and waves in severe sea conditions. Therefore, the sensor can be suitable for application observations in environments such as the shallow ocean with poor sea conditions and relatively severe pollution, thereby solving the problems of low observation accuracy, difficult cleaning and maintenance, and short maintenance cycles of the above-mentioned existing temperature, salinity, and depth sensors in the shallow 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 in the figure, this embodiment proposes a new type of temperature, salinity and depth sensor 100, which mainly includes a watertight module 1, a measurement module 2, a support module 3, a pump body module 4 and a protective cover 5. Among them, the watertight module 1 includes a sealed housing 11, on which there is a watertight connector 12 that can be electrically connected to the observation platform. The sealed housing 11 has a cavity inside, which can accommodate the measurement circuit boards and cables of the various components of the measurement module 2. The sealed housing 11 mainly serves to seal and waterproof the electrical part of the temperature, salinity and 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 their specific structures and detection functional principles will not be elaborated here. The support module 3 is arranged on the sealed housing 11, and the support module 3 has a built-in water diversion channel with 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 water diversion channel to detect the conductivity and temperature of the water in the water diversion channel. The pressure probe 23 is generally arranged inside the sealed housing 11, and a pressure buffer plug 231 is embedded in the wall of the sealed housing 11. A channel is opened in the pressure buffer plug 231 to connect the outside and the pressure probe 23. The pressure buffer plug 231 can introduce external water into the sealed housing 11 through its internal channel, so that the pressure probe 23 is in contact with the external water to complete the pressure measurement. The pump body module 4 is arranged inside the support module 3 and is used to provide circulating power for the water in the water diversion channel, so that the external water flows into the water diversion channel through the water inlet 32 and flows to the water outlet 31 through the water diversion channel, realizing the continuous circulation and replacement of the water in the water diversion channel. During the process of the water in the water diversion channel circulating and replacing, the conductivity cell 21 and the temperature probe 22 continuously detect the corresponding parameters of the circulating water samples entering the water diversion channel. The protective cover 5 is arranged on the sealed housing 11, and the measurement module 2 is placed inside the protective cover 5. The protective cover 5 can cover and protect the measurement module 2.

[0038] In some embodiments, such as Figures 1 to 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. The support module 3 includes a support body 33, a pipeline connection structure 34, a pipeline connection structure 35 and a pipeline transfer structure 36, where: The support body 33 is connected to the sealed housing 11, and a single waterway 331 is arranged inside the support body 33. The first end of the pipeline connection structure 34 is connected to the sealed housing 11, and the second end of the pipeline connection structure 34 is provided with a water outlet 31 and a water inlet 32. A waterway 2 and a waterway 3 that are respectively communicated with the water inlet 32 and the water outlet 31 are arranged inside the pipeline connection structure 34, and the waterway 2 and the waterway 3 are spaced from each other inside the pipeline connection structure 34; The water inlet end of the conductivity cell 21 is communicated with the waterway 2, and the detection part of the temperature probe 22 is embedded in the waterway 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 end of the conductivity cell 21 is communicated with the first end (water inlet end) of the waterway 331 through the pipeline transfer structure 36, and the second end (water outlet end) of the waterway 331 is communicated with the waterway 3 through the pipeline connection structure 35. The water sample detected by the conductivity cell 21 is discharged through the pipeline transfer structure 36, the waterway 331, the waterway 3 and the water outlet 31 in sequence. The pipeline transfer 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, and a one-way flow channel is arranged inside it, and an inlet and an outlet that are respectively communicated with both ends of the one-way flow channel are arranged on its surface. The inlet of the pipeline transfer structure 36 is hermetically connected to the water outlet end of the conductivity cell 21, and the outlet of the pipeline transfer structure 36 is hermetically communicated with the first end (water inlet end) of the waterway 331, such as Figure 3 and Figure 4 As shown, the conductivity cell 21 and the waterway 331 are generally arranged in parallel, so the pipeline transfer structure 36 can make the water flowing to the water outlet end of the conductivity cell 21 flow reversely into the waterway 331 to realize the function of water flow turning. The pump body module 4 is generally arranged on the waterway 331 to provide power for the cyclic replacement of the water sample in the guiding waterway to ensure that new water samples enter for detection in real time. The pipeline transfer structure 36 can be reinforced with the support body 33 through components such as screws. At the same time, O-rings can be arranged at the inlet and outlet of the pipeline transfer structure 36 to realize the sealed connection with the conductivity cell 21 and the waterway 331.

[0039] In some embodiments, such as Figures 2 to 5As shown, preferably, the second end of the pipeline connection structure 1-34 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 being flush can make the water pressures at the inlet and outlet the same, avoid the flow velocity change caused by the pressure difference, ensure that the water flows through the sensor at a uniform speed, reduce the interference of unstable water flow on the conductivity and temperature measurements, and is beneficial to improving the accuracy and reliability of the measurement data.

[0040] In some embodiments, the pump body module 4 specifically includes a pump chamber 41, an impeller 42, and a driving motor 43. The pump chamber 41 is arranged between the sealed housing 11 and the support body 33, and the pump chamber 41 communicates with the second end of the water path 1-331. The impeller 42 is located inside the pump chamber 41. The driving motor 43 is fixedly arranged on the sealed housing 11 by screws and is connected to the impeller 42. The driving motor 43 is used to drive the impeller 42 to rotate, thereby generating negative pressure at the second end (water outlet end) of the water path 1-331 to promote the water flow towards the water outlet 31. It should be noted that the driving motor 43 is sealed with the sealed housing 11. The pump chamber 41 is arranged at the port of the water path 1-331, and one end face of the pump chamber 41 is sealed and connected to the second end (water outlet end) of the water path 1-331. The other end face of the pump chamber 41 is sealed and buckled with the sealed housing 11, and radial sealing can be achieved through 1 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 this sealed chamber. To ensure that the water flow reaches the water path 3 smoothly, preferably, one end of the pipeline connection structure 2-35 communicates with the pump chamber 41, and the other end of the pipeline connection structure 2-35 communicates with the water path 3. Based on this, the water flow in the water path 1-331 reaches the water outlet 31 through the pump chamber 41, the pipeline connection structure 2-35, and the water path 3 in sequence. The pipeline connection structure 2-35 is preferably a single-tube structure. One end of it can be threadedly connected to the pump chamber 41, and the other end is inserted into the water path 3, and radial sealing is achieved through 1 O-ring.

[0041] In some embodiments, the impeller 42 is installed on the pump shaft and fixed by a retaining ring. The magnetic ring is installed on the impeller 42 and fixed by gluing. After the driving motor 43 is powered on, it drives the magnetic drive rotor to rotate, thereby driving the impeller 42 to rotate and pumping out the water flow in the water path. In actual operation, the driving motor 43 and the magnetic drive rotor can be reliably isolated from 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 both the measurement module 2 and the support module 3 at the same time, especially the water outlet 31 and the water inlet 32 of the support module 3, which are located inside the protective cover 5. Through the protection of the protective cover 5, the adhesion and reproduction of suspended particles and tiny microorganisms to the measurement module and the pipeline system can be effectively inhibited, and the impact and damage of the instrument by the wind and waves under severe sea conditions can be reduced. It should be noted that there are installation gaps between the protective cover 5 and the measurement module 2 and the support module 3. Therefore, although the protective cover 5 can block the measurement module 2 and the support module 3, the installation gaps are sufficient to allow seawater to enter, ensuring the normal detection of seawater by the measurement module 2.

[0043] In some embodiments, in order to ensure the smooth entry of new water samples into the water inlet 32 and the smooth discharge of the water samples after the detection from the water outlet 31, it is preferable to provide a plurality of water-permeable holes 51 for water to pass through on the protective cover 5.

[0044] In some embodiments, the sealed housing 11 includes a columnar housing 111. An installation end cover 112 is hermetically arranged at the first end of the columnar housing 111, and a watertight connector 12 is hermetically arranged on the installation end cover 112. A probe end cover 113 is hermetically 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. Among them, both the pressure probe 23 and the main body of the drive motor 43 are embedded in the probe end cover 113, and both the pressure probe 23 and the main body of the drive motor 43 are reliably sealed with the probe end cover 113 through O-rings; at the same time, as Figure 9As shown, a flow channel 1131 communicating with the detection part of the pressure probe 23 inside is provided on the side wall of the probe end cap 113. The port of the flow channel 1131 is sealed and installed with the aforementioned pressure buffer plug 231. The pressure buffer plug 231 can lead external water to the detection part of the pressure probe 23 through its internal channel for pressure detection. On the basis of realizing the drainage function, the pressure buffer plug 231 can buffer the impact of water flow, reduce the damage and measurement noise caused by the water flow impact on the pressure probe 23; 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 cap 113 and realizes radial sealing through one O-ring. The detection part of the temperature probe 22 is located outside the probe end cap 113, which is convenient to extend into the second waterway. The conductivity cell 21 is fixed to the outside of the probe end cap 113 through relevant support structures and is parallel to the axis of the probe end cap 113. A radial seal is realized between the conductivity cell 21 and the probe end cap 113 through two O-rings. At the same time, an end face seal is realized between the conductivity cell 21 and the second waterway through one O-ring. The first pipeline connection structure 34 is arranged on the outside of the probe end cap 113, and the second waterway and the third waterway in the first pipeline connection structure 34 are arranged separately from the inside of the probe end cap 113. A radial seal can be realized through two O-rings at the connection between the first pipeline connection structure 34 and the probe end cap 113. The support body 33 of the support module 3 is located at the second end of the columnar housing 111 and is connected to one end of the probe end cap 113 far from the installation end cap 112 through connecting components such as screws.

[0045] In some embodiments, at least one of the protective cover 5, the columnar housing 111, the installation end cap 112, and the probe end cap 113 is processed from a titanium alloy material, and at least one of the protective cover 5, the columnar housing 111, the installation 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 configured at the port of at least one of the water outlet 31 and the water inlet 32. The slow-release anti-fouling plug 6 can inhibit the reproduction and attachment of microorganisms near the water outlet 31 and the water inlet 3.; 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 cap 113 and realizes radial sealing through one O-ring. The detection part of the temperature probe 22 is located outside the probe end cap 113, which is convenient to extend into the second waterway. The conductivity cell 21 is fixed to the outside of the probe end cap 113 through relevant support structures and is parallel to the axis of the probe end cap 113. A radial seal is realized between the conductivity cell 21 and the probe end cap 113 through two O-rings. At the same time, an end face seal is realized between the conductivity cell 21 and the second waterway through one O-ring. The first pipeline connection structure 34 is arranged on the outside of the probe end cap 113, and the second waterway and the third waterway in the first pipeline connection structure 34 are arranged separately from the inside of the probe end cap 1;

[0047] In some embodiments, a metal protective net can be integrally wrapped around the outside of the CTD sensor 100, which can further protect the entire sensor and reduce the attachment of marine organisms. An electric current can be applied to the metal protective net at the measurement interval of the CTD sensor 100 to delay the passivation speed of the metal protective net. The aforementioned metal protective net is preferably a copper protective net with a bactericidal effect.

[0048] The working principle of this solution is as follows: seawater enters from the water inlet 32, flows through the temperature probe 22, the conductivity cell 21, passes through the pipeline adapter structure 36, enters the water channel 1 331, and then enters the pump chamber 41. The impeller 42 rotates to generate negative pressure, and finally pumps the seawater into the pipeline connection structure 2 32, and finally 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, covering the entire measuring module 2 and the supporting module 3 inside.

[0050] In the observation of the shallow ocean layer with complex sea conditions, serious environmental pollution and enriched microorganisms, the temperature, salinity and depth sensor 100 of this solution 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 and depth sensor 100, by configuring a protective cover 5 on the outside of the sensor and using a built-in pump body module to continuously flush the temperature probe, conductivity cell and diversion waterway, can jointly inhibit the attachment and reproduction of suspended particles and fine microorganisms to the measurement module and pipeline system from the inside and outside. The measurement module and 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. It can then be applied to 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 existing temperature, salinity and depth sensors in the shallow surface of the ocean. The advantages and beneficial effects of the temperature, salinity and depth sensor 100 are as follows: (1) 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 to inhibit 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 multiplying on the measuring probe and piping system.

[0053] (3) Through the integrated support main structure, the pump body module is built in, 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, 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.

[0055] (5) In waters with relatively severe pollution, the entire sensor (including all components) can be wrapped with a copper mesh with bactericidal properties, and regularly maintained and replaced, which can 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) During the actual deployment process, for application environments where the sediment is greater than 200 NTU, the sensor watertight connector end 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 provided in the center of the pipeline transfer structure, which also facilitates the discharge of bubbles, oil stains, and small microorganisms in the water mass, improving the measurement accuracy.

[0057] (7) The sensor of this solution adopts a modular design for each part, and has a compact structure. Its external dimensions are close to those of the same type of instrument without the pump body module, and the installation and fixing interfaces are the same, so it can be directly replaced and upgraded in-situ.

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

[0059] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for convenience of description and are not used to limit the scope under which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope under which the present invention can be implemented.

[0060] Specific examples are used in the present invention to elaborate on the principles and implementation methods of the present invention. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A thermosalinograph, characterized in that, It includes a watertight module (1), a measurement module (2), a support module (3), a pump body module (4), a protective cover (5) and a metal protective net, wherein: The watertight module (1) includes a sealed housing (11), and a watertight connector (12) capable of being electrically connected to the observation platform is arranged on the sealed housing (11); 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); The support module (3) is arranged on the sealed housing (11), and the support module (3) has a built-in water diversion channel, the water diversion channel has a water outlet (31) and a water inlet (32), and a slow-release antifouling plug (6) is configured at the port of at least one of the water outlet (31) and the water inlet (32), the conductivity cell (21) and the temperature probe (22) are both communicated with the water diversion channel, the pump body module (4) is arranged in the support module (3) and is used to provide circulating power for the water in the water diversion channel; The protective cover (5) is arranged on the sealed housing (11) and can cover and protect the measurement module (2) and the support module (3) at the same time; The sealed housing (11) includes a columnar housing (111), an installation end cover (112) is arranged at the first end of the columnar housing (111), the watertight connector (12) is arranged on the installation 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), the support module (3) is located at the second end of the columnar housing (111) and is connected to the probe end cover (113); At least one of the protective cover (5), the columnar housing (111), the installation end cover (112) and the probe end cover (113) is processed by titanium alloy material, and at least one of the protective cover (5), the columnar housing (111), the installation end cover (112) and the probe end cover (113) is sprayed with a hydrophobic and corrosion-resistant coating on its surface; The outside of the temperature-salinity-depth sensor (100) is integrally wrapped with the metal protective net, and by applying current to the metal protective net at the measurement interval of the temperature-salinity-depth sensor, the passivation speed of the metal protective net can be delayed.

2. The bathythermograph sensor according to claim 1, wherein, 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 pipe connection structure (34), a second pipe connection structure (35) and a pipe 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 pipe connection structure (34) is connected to the sealed housing (11); a second end of the first pipe connection structure (34) is provided with the water outlet (31) and the water inlet (32); the pipe connection structure (35) is connected to the sealed housing (11); a second end of the first pipe connection structure (34) is provided with the water outlet (31) and the water inlet (32); The connection structure (34) is provided with a water channel (2) and a water channel (3) 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 portion of the temperature probe (22) is embedded in the water channel (2), and the detection portion 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 water channel (331) through the pipeline adapter structure (36); the second end of the water channel (331) is connected to the water channel (3) through the pipeline connection structure (35); and the pump body module (4) is provided on the water channel (331).

3. The bathythermograph sensor according to claim 2, wherein The second end of the pipeline 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 thermohaline sensor according to claim 2 or 3, characterized in that, The pump body module (4) includes a pump chamber (41), an impeller (42) and a drive motor (43), wherein the pump chamber (41) is arranged between the sealed shell (11) and the support body (33), and the pump chamber (41) is communicated with the second end of the water channel (331); the impeller (42) is located in the pump chamber (41), the drive motor (43) is arranged on the sealed shell (11) and connected to the impeller (42), and the drive motor (43) is used to drive the impeller (42) to rotate.

5. The thermohaline 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.

6. A fouling prevention method for the thermohaline sensor according to any one of claims 1 to 5, characterized in that, A metal protective net is wrapped around the outside of the temperature-salinity-depth sensor (100), and a current is applied to the metal protective net during a measurement interval of the temperature-salinity-depth sensor (100) to slow down the passivation speed of the metal protective net.

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