CN219810883U - Novel packaging structure of seven-electrode conductivity sensor and sensor - Google Patents

Abstract

The utility model relates to the technical field of ocean measuring instruments, in particular to a novel packaging structure of a seven-electrode conductivity sensor and the sensor, wherein the novel packaging structure comprises a sensor probe structure; the sensor probe structure comprises a conductive cell shell and a hose; the inner cavity of the conductive tank shell is provided with a liquid injection area and a placement area for placing a conductive tank pipe; a hose fixing port is formed in the shell of the conductivity cell shell; one end of the hose is sealed, the other end of the hose is open, and the opening of the hose is in sealing connection with the hose fixing port, so that a sealing cavity communicated with the liquid injection area of the conductivity cell shell is formed in the inner cavity of the hose; the liquid injection area and the hose inner cavity are used for filling liquid; the conductive cell shell is made of a material with impact resistance and resilience. The novel packaging structure enables the whole pressure-resistant range of the sensor to be improved, and the sensor can meet the test requirements of conductivity parameters in various environments.

Description

Novel packaging structure of seven-electrode conductivity sensor and sensor

Technical Field

The utility model relates to the technical field of ocean measuring instruments, in particular to a novel packaging structure of a seven-electrode conductivity sensor and the sensor.

Background

In ocean observation, the method has extremely high requirements on the performance of an ocean testing instrument, the conductivity of the sea water is an important parameter in the ocean research process, and the rapid and accurate conductivity measurement has important significance in the aspects of ocean research, ocean resource development and the like.

Currently, conductivity sensors are commonly used for sea water conductivity measurements. If the whole sensor is in direct contact with external seawater, ageing and rusting of materials and fouling of pollutants are easy to cause, so that the measurement stability and the service life of the sensor are affected. Therefore, it is required to package the sensor, and in laboratory tests, third-party evaluation and open sea tests, a stable and accurate conductivity detection packaging device is required, so that test calibration tests simulating marine environments can be stably performed for a sufficient number of times, and normal operation of the conductivity sensing instrument under real marine environments is ensured.

However, the packaging of the seven-electrode conductivity sensor disclosed in the prior art has the problem of small withstand voltage range, and the withstand voltage range is within 10 MPa. The pressure-resistant range is small, so that the pressure-resistant device is limited in use under certain environments (such as a deep sea detection environment), and the problems of poor stability, short service life and the like in certain environments are caused. Therefore, in order to meet the test requirements of conductivity parameters in various environments, a novel conductivity sensor packaging structure with a large withstand voltage range is developed, and the novel conductivity sensor packaging structure has very important value.

Disclosure of Invention

In order to solve the defects in the prior art mentioned in the background art, the utility model provides a novel packaging structure of a seven-electrode conductivity sensor, which has the following technical scheme:

it includes a sensor probe structure; the sensor probe structure comprises a conductive cell shell and a hose; the inner cavity of the conductive tank shell is provided with a liquid injection area and a placement area for placing a conductive tank pipe; a hose fixing port is formed in the shell of the conductivity cell shell; one end of the hose is sealed, the other end of the hose is open, and the opening of the hose is in sealing connection with the hose fixing port, so that a sealing cavity communicated with the liquid injection area of the conductivity cell shell is formed in the inner cavity of the hose; the liquid injection area and the hose inner cavity are used for filling liquid; the conductive cell shell is made of a material with impact resistance and resilience.

In an embodiment, a water inlet and a water outlet are formed in the shell of the conductivity cell shell, so that the liquid to be tested enters the conductivity Chi Guan through the water inlet and the water outlet; and when the conductance Chi Guanan is placed in the placement zone, the water inlet and the water outlet are not in communication with the liquid injection zone.

In one embodiment, the shell of the conductivity cell shell is provided with a liquid injection port; the liquid injection port is provided with a sealing piece for sealing the liquid injection port, so that the filling liquid is injected through the liquid injection port and is filled into the liquid injection area and the inner cavity of the hose.

In one embodiment, the material of the conductive cell shell is a polyoxymethylene material; and/or the filling liquid is silicone oil; and/or the hose is a rubber hose; and/or the sealing element is a threaded rubber sealing plug.

In one embodiment, the sensor probe structure further comprises a conduit; the upper end of the shell of the conductivity cell shell is provided with a wire guide hole, and the lower end of the wire guide tube is in sealing connection with the wire guide hole, so that a wire penetrates through the wire guide tube and is electrically connected with the lead wire of the conductivity cell tube.

In one embodiment, the probe further comprises a protective shell; the sensor probe structure is arranged in the inner cavity of the probe protective shell, and the probe protective shell is provided with a water inlet hole so that liquid to be measured enters the sensor probe structure from the water inlet hole.

In one embodiment, the circuit package further comprises a circuit package; the shell of the circuit packaging shell is provided with a joint for communicating the inner cavity of the circuit packaging shell with the outside and a second connecting hole for connecting the conduit, and the inner cavity of the circuit packaging shell is used for installing a signal conversion circuit so that the signal conversion circuit is connected with an external display device through a wire penetrating through the joint; the probe protective housing upper end is equipped with and is used for connecting the first connecting hole of conduit, the upper end of conduit penetrates first connecting hole to with second connecting hole sealing connection, so that the hole of conduit with the inner chamber intercommunication of circuit encapsulation shell.

In an embodiment, the circuit package and the probe protective housing are connected by a detachable connection.

In one embodiment, the conduit is a stainless steel conduit; and/or, the probe protective shell is made of aluminum oxide; and/or the material of the circuit packaging shell is alumina; and/or the joint is a pressure-resistant watertight joint.

The utility model also provides a sensor which adopts the novel packaging structure of the seven-electrode conductivity sensor.

Based on the above, compared with the prior art, the utility model has the following technical effects:

the novel packaging structure of the seven-electrode conductivity sensor provided by the utility model has the advantages of being good in stability, long in service life and the like in various measuring environments, and the sensor can meet the testing requirements of conductivity parameters in various environments.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

For a clearer description of embodiments of the utility model or of the solutions of the prior art, the drawings that are needed in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the utility model, and that other drawings can be obtained from them without inventive effort for a person skilled in the art; the positional relationships described in the drawings in the following description are based on the orientation of the elements shown in the drawings unless otherwise specified.

Fig. 1 is a schematic structural diagram of a novel package structure of a seven-electrode conductivity sensor according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of a novel package structure of a seven-electrode conductivity sensor according to an embodiment of the present utility model.

FIG. 3 is a schematic diagram of a sensor probe structure according to an embodiment of the utility model.

FIG. 4 is a cross-sectional view of a sensor probe structure in accordance with one embodiment of the present utility model.

Fig. 5 is a partial enlarged view at a in fig. 4.

Reference numerals:

the sensor probe comprises a 100 sensor probe structure, a 110 conductivity cell shell, a 120 hose, a 130 conductivity cell tube, a 140 sealing piece, a 150 wire tube, a 111 liquid injection area, a 112 placement area, a 113 hose fixing port, a 114 liquid injection port, a 115 water inlet, a 116 water outlet, a 117 wire hole, a 118 step structure, a 200 probe protective shell, a 210 water inlet hole, a 300 circuit packaging shell, a 310 joint, a 320O-shaped sealing ring and a 330 connecting seat.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model; the technical features designed in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that all terms used in the present utility model (including technical terms and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the present utility model belongs and are not to be construed as limiting the present utility model; it will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The utility model provides a novel packaging structure of a seven-electrode conductivity sensor as shown in the embodiment of figures 1-4, which has the following technical scheme:

it includes a sensor probe structure 100; the sensor probe structure 100 includes a conductivity cell housing 110 and a hose 120; the inner cavity of the conductivity cell shell 110 is provided with a liquid injection area 111 and a placement area 112 for installing a conductivity cell tube 130; a hose 120 fixing opening is formed in the shell of the conductivity cell shell 110; one end of the hose 120 is sealed, the other end is open, and the opening of the hose is in sealing connection with the fixed port of the hose 120, so that a sealed cavity is formed between the inner cavity of the hose 120 and the liquid injection area 111 of the conductivity cell housing 110; the liquid filling area 111 and the inner cavity of the hose 120 are used for filling liquid; the conductivity cell housing 110 is made of a material having impact resistance and recovery. Preferably, in this embodiment, the conductive tank housing 110 is made of polyoxymethylene, and the hose 120 is a rubber hose 120.

Specifically, the novel packaging structure is made of a material with impact resistance and resilience in the conductivity cell shell 110, a liquid injection area 111 and a placement area 112 for placing the conductivity cell tube 130 are arranged in the inner cavity of the novel packaging structure, and the liquid injection area 111 is communicated with a sealing hose 120.

When in use, the filling liquid is filled in the filling liquid area 111 and the inner cavity of the hose 120, in a test environment, as the filling liquid is filled in the filling liquid area 111 and the inner cavity of the hose 120, and the conductivity cell housing 110 has impact resistance and resilience, the hose 120 has scalability, when the water pressure of the water flow of the liquid (such as seawater) to be tested impacts the conductivity cell housing 110, the hose 120 can be used for compensating the influence of external pressure, the filling liquid area 111 of the conductivity cell housing 110 and the hose 120 buffer and release the pressure, so that the impact and influence of the pressure on the conductivity cell tube 130 in the conductivity cell housing 110 are avoided, and the conductivity cell tube 130 is the key sensitive part for conducting conductivity measurement of the sensor; by the design, the whole pressure-resistant range of the sensor is improved.

In conclusion, the novel packaging structure of the seven-electrode conductivity sensor enables the whole pressure-resistant range of the sensor to be improved, has the advantages of being good in stability, long in service life and the like in various measuring environments, and enables the sensor to meet the testing requirements of conductivity parameters in various environments.

It should be noted that:

the key measuring component of the sensor, namely the conductive cell tube 130, is an existing device, and mainly comprises a tube body, electrodes arranged in the tube body and leads connected with the electrodes, wherein the structure and the working principle of the conductive cell tube are not described any more, and can be known by a person skilled in the art according to the prior art;

the material of the conductive cell housing 110 in this embodiment is a polyoxymethylene material, which has the advantages of strong repeated impact resistance, good recovery, good lubricity, good wear resistance, and the like. Based on the design concepts described above, one skilled in the art can also substitute other materials with impact resistance, restorability, including, but not limited to, polyoxymethylene materials;

the hose 120 of the present embodiment adopts the rubber hose 120, and other polymer materials with contractibility and elasticity can be adopted according to the design concept, including but not limited to the rubber hose 120.

Preferably, the fixing port of the hose 120 is connected with the hose 120 in a sealing manner through glue and fastening wires.

Preferably, a water inlet 115 and a water outlet 116 are formed on the shell of the conductivity cell housing 110, so that the liquid to be tested enters the conductivity Chi Guan through the water inlet 115 and the water outlet 116; and when the conductance Chi Guan 130 is disposed at the placement region 112, the water inlet 115 and the water outlet 116 are not in communication with the liquid injection region 111. As shown in fig. 4-5, preferably, the water inlet 115 and the water outlet 116 of the conductivity cell housing 110 are provided with a step structure 118, so that the conductivity cell tube 130 is clamped on the step structure 118, and the water inlet 115 and the water outlet 116 are correspondingly communicated with the water inlet 130 and the water outlet 116, so that when the conductivity Chi Guan 130 is arranged in the arrangement area 112, the water inlet 115 and the water outlet 116 are communicated with the inner cavity of the conductivity cell tube 130, and the water inlet 115 and the water outlet 116 are not communicated with the liquid injection area 111.

In the working process of the conductivity cell tube 130, the liquid to be measured needs to enter the inner cavity of the tube body of the conductivity cell tube 130, and the step structure 118 of the conductivity cell housing 110 is adopted to be clamped with the conductivity cell tube 130, so that the liquid to be measured can be ensured to enter the inner cavity of the tube body of the conductivity cell tube 130 through the water inlet 115 and the water outlet 116, and the water inlet 115 and the water outlet 116 can be ensured not to be communicated with the liquid injection area 111. The connecting structure is simple in design and stable in installation.

Preferably, the conductive cell housing 110 is assembled by a plurality of sub-housings, and the joints of the sub-housings are connected in a sealing manner through pressure-resistant glue.

As shown in fig. 3, the conductivity cell casing 110 of this embodiment is composed of two sub-cases assembled up and down, so that the assembly design is convenient for the installation of the conductivity cell tube 130.

Preferably, the shell of the conductivity cell shell 110 is provided with a liquid injection port 114; the filling port 114 is provided with a sealing member 140 for sealing the filling port 114, so that the filling liquid is filled into the filling area 111 and the inner cavity of the hose 120 through the filling port 114. Further preferably, the liquid filling port 114 is disposed at a bottom end of the casing of the conductivity cell casing 110.

The fill port 114 and seal 140 are provided to facilitate filling and draining of the fill fluid.

Preferably, the filling liquid is silicone oil. Preferably, the seal 140 is a threaded rubber sealing plug.

Preferably, the sensor probe structure 100 further includes a conduit 150; the upper end of the shell of the conductivity cell housing 110 is provided with a wire guide 117, and the lower end of the wire guide 150 is connected with the wire guide 117 in a sealing manner, so that a wire is arranged in the wire guide 150 in a penetrating manner and is electrically connected with the lead wire of the conductivity cell tube 130. Further preferably, the lower end of the conduit 150 is sealingly connected to the wire guide 117 by screw-threaded engagement. Preferably, the conduit 150 is a stainless steel conduit 150.

The conductive pipe 150 is provided so that the conductive pipe 130 leads inside the conductive tank case 110 are connected to an external signal conversion circuit through a conductive wire.

Preferably, a probe protective housing 200 is also included; the sensor probe structure 100 is disposed in the inner cavity of the probe protective housing 200, and the probe protective housing 200 is provided with a water inlet 210, so that the liquid to be measured enters the sensor probe structure 100 from the water inlet 210. Preferably, the probe protective case 200 is made of metal.

With the above design, in use, the liquid to be measured enters through the water inlet 210 on the probe protective housing 200 and enters the sensor probe structure 100. The probe protective shell 200 is housed outside the sensor probe structure 100, providing further pressure protection thereto.

Preferably, a circuit package 300 is also included; the casing of the circuit package 300 is provided with a connector 310 for communicating the inner cavity thereof with the outside, and a second connection hole for connecting the conduit 150, wherein the inner cavity thereof is used for installing a signal conversion circuit, so that the signal conversion circuit is connected with an external display device through a wire penetrating through the connector 310; the probe protective housing 200 is provided with a first connecting hole at the upper end for connecting the conduit 150, and the upper end of the conduit 150 penetrates into the first connecting hole and is connected with the second connecting hole in a sealing manner, so that the inner hole of the conduit 150 is communicated with the inner cavity of the circuit package 300. Further preferably, the upper end of the conduit 150 is sealingly connected to the first connection port and the second connection port by screwing. Preferably, the material of the circuit package 300 is alumina. The joint 310 is preferably a pressure-resistant watertight joint 310, which is advantageous in improving watertight seal.

With the above structural design, the signal conversion circuit is protected in the circuit package case 300 and sealed with water. The circuit package 300 connects the sensor probe structure 100, the signal conversion circuit, and the connector 310 to form a sensor prototype.

When in use, the signal conversion circuit in the inner cavity of the circuit package shell 300 can be connected with an external display device by connecting wires, penetrating the wires through the watertight connector 310 and realizing the connection with the external display device; and the connection with the conductivity cell tube 130 can be realized by connecting wires which pass through the circuit package shell 300, the inner hole of the wire tube 150 and the inner cavity of the conductivity cell shell 110 to be connected with the conductivity cell tube 130 through leads. The wire connection path does not affect the watertight performance of the signal conversion circuit.

Preferably, the circuit package 300 is connected to the probe protective case 200 by a detachable connection. Further preferably, the lower end of the circuit package 300 is connected with the upper end of the probe protective housing 200 through a screw hole and screw structure, and an O-ring 320 is disposed at the connection position of the lower end and the upper end, so as to improve the sealing performance.

Preferably, the upper end of the circuit package 300 is provided with a connecting seat 330, so that the novel package structure is convenient to install and fix in use.

It should be noted that:

in this embodiment, the conduit 150 is a stainless steel conduit 150, and the circuit package 300 is made of alumina. Based on the design concepts described above, other materials with good rigidity and seawater corrosion resistance may also be used by those skilled in the art, including, but not limited to, the alumina materials described above.

In summary, compared with the prior art, the novel packaging structure of the seven-electrode conductivity sensor provided by the utility model has the following technical effects:

1. the integral pressure-resistant range of the sensor is improved, and the integral pressure resistance can reach 120MPa;

2. the method has the advantages of good stability, long service life and the like in various environments, has strong applicability, and can meet the test requirements of conductivity parameters in various environments;

3. the utility model starts from the actual ocean environment and the test requirement of the conductivity sensor, can realize the simulation of the conductivity environment in the seawater, and provides a conductivity prototype for the test of the conductivity sensor.

In addition, it should be understood by those skilled in the art that although many problems exist in the prior art, each embodiment or technical solution of the present utility model may be modified in only one or several respects, without having to solve all technical problems listed in the prior art or the background art at the same time. Those skilled in the art will understand that nothing in one claim should be taken as a limitation on that claim.

Although terms such as conductivity cell housing, hose, etc. are used more herein, the possibility of using other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model; the terms first, second, and the like in the description and in the claims of embodiments of the utility model and in the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. A novel packaging structure of a seven-electrode conductivity sensor is characterized in that: comprises a sensor probe structure (100); the sensor probe structure (100) includes an electrical conductance Chi Waike (110) and a hose (120);

the inner cavity of the electric conduction Chi Waike (110) is provided with a liquid injection area (111) and a placement area (112) for placing the electric conduction Chi Guan (130);

a hose fixing port (113) is formed in the shell of the electric conductor Chi Waike (110); one end of the hose (120) is sealed, the other end of the hose is open, and the opening of the hose is in sealing connection with the hose fixing opening (113), so that a sealed cavity communicated with the liquid injection area (111) of the electric conduction Chi Waike (110) is formed by the inner cavity of the hose (120); the liquid injection area (111) and the inner cavity of the hose (120) are used for filling liquid;

the electric conduction Chi Waike (110) is made of a material having impact resistance and recovery.

2. The novel packaging structure of a seven-electrode conductivity sensor of claim 1, wherein: a water inlet (115) and a water outlet (116) are formed in the shell of the electric conduction Chi Waike (110), so that liquid to be tested enters the electric conduction Chi Guan (130) through the water inlet (115) and the water outlet (116); and when the conductance Chi Guan (130) is disposed in the placement region (112), the water inlet (115) and the water outlet (116) are not in communication with the liquid injection region (111).

3. The novel packaging structure of a seven-electrode conductivity sensor of claim 1, wherein: a liquid injection port (114) is formed in the shell of the electric conduction Chi Waike (110);

the liquid injection port (114) is provided with a sealing piece (140) for sealing the liquid injection port (114), so that the filling liquid is injected through the liquid injection port (114) and is filled into the liquid injection area (111) and the inner cavity of the hose (120).

4. The novel packaging structure of a seven-electrode conductivity sensor of claim 3, wherein: the material of the electric conduction Chi Waike (110) is a polyoxymethylene material;

and/or the filling liquid is silicone oil;

and/or, the hose (120) is a rubber hose (120);

and/or the seal (140) is a threaded rubber sealing plug.

5. The novel packaging structure of a seven-electrode conductivity sensor of claim 1, wherein: the sensor probe structure (100) further includes a conduit (150);

the upper end of the shell of the electric conduction Chi Waike (110) is provided with a wire guide hole (117), and the lower end of the wire guide tube (150) is in sealing connection with the wire guide hole (117) so that a wire penetrates through the wire guide tube (150) to be electrically connected with the lead wire of the electric conduction Chi Guan (130).

6. The novel packaging structure of a seven-electrode conductivity sensor of claim 5, wherein: also comprises a probe protective shell (200);

the sensor probe structure (100) is arranged in the inner cavity of the probe protective shell (200), and the probe protective shell (200) is provided with a water inlet hole (210) so that liquid to be detected enters the sensor probe structure (100) from the water inlet hole (210).

7. The novel packaging structure of a seven-electrode conductivity sensor of claim 6, wherein: also includes a circuit package (300);

the shell of the circuit packaging shell (300) is provided with a joint (310) for communicating the inner cavity of the circuit packaging shell with the outside and a second connecting hole for connecting the conduit (150), and the inner cavity of the circuit packaging shell is used for installing a signal conversion circuit so that the signal conversion circuit is connected with an external display device through a wire penetrating through the joint (310);

the probe protection shell (200) upper end is equipped with and is used for connecting the first connecting hole of conduit (150), the upper end of conduit (150) penetrates first connecting hole to with second connecting hole sealing connection, so that the hole of conduit (150) with the inner chamber intercommunication of circuit encapsulation shell (300).

8. The novel packaging structure of a seven-electrode conductivity sensor of claim 7, wherein: the circuit packaging shell (300) is connected with the probe protecting shell (200) through a detachable connecting piece.

9. The novel packaging structure of a seven-electrode conductivity sensor of claim 7, wherein: the conduit (150) is a stainless steel conduit (150);

and/or, the probe protective shell (200) is made of aluminum oxide;

and/or the material of the circuit packaging shell (300) is alumina;

and/or the joint (310) is a pressure-resistant watertight joint (310).

10. A sensor, characterized in that: a novel package structure employing the seven-electrode conductivity sensor according to any one of claims 1 to 9.