RU2334223C1 - Conformable converter of sea water hydrophysical parameters - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: converter of sea water hydrophysical parameters contains, at least, one gage unit including electric conductivity transducer (ECT) of sea water, including sensor of sea water conductivity transducer, sea water temperature converter, including sensor of sea water temperature converter, pressure transducer. Sensor of sea water temperature converter contains thin isolated copper wire between two hollow thin-walled cylinders. The first hollow thin-walled cylinder is formed by flange in the casing of sensor of sea water temperature converter. The second hollow thin-walled cylinder is tightly attached to the first hollow thin-walled cylinder and the casing of sensor of sea water temperature converter provided with angle holes for sea water flow inside of the first hollow thin-walled cylinder which contains housing. Housing external surface is streamline circular-shaped from incident flow. Sensor of contactless sea water conductivity transducer contains supply and instrument transformers provided in dielectric case and having coils wound on toroidal cores. Sensor of sea water temperature converter and dielectric case of sensor of contactless sea water conductivity transducer are provided with hole for sea water flow and mounted in housing holes. Holes axes are perpendicular to generating line of circular-shaped housing surface and designed in housing symmetry plane having holes for sea water drainage. The external circular-shaped surface of dielectric case of sensor of sea water conductivity transducer incident flow is interconnected to external surface of a casing. Each gage unit has hermetically sealed module containing electronics package assembly. Hermetically sealed module has sealed cable inlet.

EFFECT: improved accuracy of sea water hydrophysical parameters measurements in mobile conditions through elimination of sea water flow disturbance close by converter.

5 dwg

Description

The invention relates to the field of research of hydrophysical parameters of sea water and can be used as part of specialized complexes or systems installed on mobile carriers for measuring hydrophysical parameters of sea water, such as electrical conductivity, temperature, pressure, as well as indirect measurements of parameters such as salinity of seawater, sound propagation velocity in seawater, seawater density, etc.

The practice of modern oceanographic research shows that in solving a number of problems, precision measurements and operational processing of various hydrophysical information in real time on board the equipment carrier during long-term operation are necessary. The main goal of such studies is to build information maps of hydrological fields, study their temporal and spatial variability, fine structure, identify abnormal hydrophysical zones, etc.

The effectiveness of oceanological research is determined by the technical characteristics of the measuring equipment used - the range of measurements of hydrophysical parameters, sensitivity, measurement error, as well as the reliability of the measuring instruments and the state of their metrological support.

Various systems are known for analyzing the state of the marine environment [1-10], containing transducers of hydrochemical and physical parameters of the aquatic environment and recording equipment. The equipment provides the collection and processing of data from transducers of hydrophysical parameters and the registration of processing results.

The closest in technical essence to the proposed transducer of hydrophysical parameters of sea water and selected as a prototype is a transducer of hydrophysical parameters of the aquatic environment, which is part of the system of measuring chemical-physical parameters of the aquatic environment and described in the description of the utility model [11]. The prototype converter contains a contact converter for the specific electrical conductivity of the aqueous medium, a temperature converter, a converter of a hydrogen indicator, a converter of the value of the redox potential, a reference electrode, a converter of mass concentration of dissolved oxygen, a depth converter, an autonomous bipolar source of supply voltage, feeding voltage followers included in composition of the hydrogen indicator converter, the value converter I have a redox potential and a reference electrode, and an analog-to-digital converter with an RS-485 interface controller at the output, while the primary measuring transducers are a contact converter for electrical conductivity of an aqueous medium, a temperature converter, a converter for a hydrogen indicator, a converter for the value of the redox potential, a mass concentration transducer of dissolved oxygen and a depth transducer, as well as a reference electrode, total For the hydrogen indicator and the converter, the values of the redox potential are installed in the front part of the sealed cylindrical casing of the converter for the hydrochemical and physical parameters of the aqueous medium, made of a material resistant to aggressive environments, the primary measuring transducer (PIP) of the contact converter for electrical conductivity of water the medium has the shape of a streamlined body of revolution, located coaxially with the housing of the hydrochemist converter o-physical parameters of the aquatic environment and contains a pair of current electrodes, one of which is round in shape and located in the nose of the PIP of the contact converter of electrical conductivity, and the other is formed by the housing of the PIP of the contact converter of electrical conductivity, and a pair of ring potential electrodes located between the current electrodes coaxial with these electrodes and isolated from one another and from current electrodes, the PIP of the temperature transducer is made of a thin insulated a bottom wire located between two hollow thin-walled cylinders, one of which is formed by a protrusion in the PIP of the temperature transducer, and the other is hermetically sealed, mainly laser-welded, with the first hollow thin-walled cylinder and the PIP of the temperature transducer, in which inclined openings for fluid flow are made inside the first hollow thin-walled cylinder, the PIP of the converter of the hydrogen indicator is made in the form of an electrode for determining the hydrogen indicator, to which an electrode voltage follower is connected to determine the hydrogen index, the PIP of the oxidation-reduction potential value converter is made in the form of a platinum electrode to determine the oxidation-reduction potential value, to which a platinum electrode is connected to determine the oxidation-reduction potential value, the PIP converter of the dissolved oxygen mass concentration made in the form of a two-electrode cell for determining the mass the concentration of dissolved oxygen, to the output of which a current-voltage converter is connected, the PIP of the depth transducer is made in the form of a tensometric bridge pressure transducer, primary measuring transducers of a temperature transducer, a transducer of a hydrogen indicator, a transducer of a value of redox potential, a transducer of the mass concentration of dissolved oxygen and a depth transducer, as well as the reference electrode are located in front of hermetically of the cylindrical housing of the converter of hydrochemical and physical parameters of the aqueous medium around the PIP of the contact converter of the specific electrical conductivity of the aqueous medium, the outputs of the contact converter of the specific electrical conductivity of the aqueous medium, the temperature converter, the converter of the hydrogen indicator, the converter of the value of the redox potential, the reference electrode, the converter of the mass concentration of dissolved oxygen and depth transducer connected to the input I’ll give an analog-to-digital converter, the input-output of the RS-485 interface controller is connected by a serial communication channel to the corresponding input-output of an electronic computer, which is capable of processing data received from the converter of the hydrochemical and physical parameters of the aqueous medium, visualizing the processed measurement results, archiving and documenting measurement information.

A disadvantage of the known transducer of parameters of the aquatic environment is the limited applicability for measuring the hydrophysical parameters of sea water in mobile conditions due to the lack of accuracy in the measurement of parameters due to distortions introduced by the disturbance of the fluid flow near the transducer.

The problem solved by the invention is to increase the accuracy of measurements of hydrophysical parameters of sea water in mobile conditions by eliminating disturbances in the flow of sea water near the transducer.

The essence of the invention lies in the fact that the transducer of hydrophysical parameters of sea water, containing at least one measuring unit, including a transducer of electrical conductivity (SEC) of sea water, including a primary measuring transducer of a UEP of sea water, a transducer of sea temperature water, including a primary measuring transducer of the transducer of sea water temperature, a pressure transducer, while the primary meter the first transducer of the seawater temperature transducer contains a thin insulated copper wire located between two hollow thin-walled cylinders, the first hollow thin-walled cylinder is formed by a protrusion in the housing of the primary measuring transducer of the sea-water temperature, the second hollow thin-walled cylinder is hermetically sealed with the first hollow thin-walled cylinder and the body of the primary measuring a transducer of a transducer of sea water temperature, in which inclined e openings for the flow of sea water inside the first hollow thin-walled cylinder, characterized in that it contains a casing, the outer surface of which on the side of the incoming flow has the shape of a streamlined cylinder, while in each measuring unit the primary measuring transducer of the non-contact UEP transducer of sea water contains dielectric housing supply and measuring transformers with windings located on toroidal cores, primary measuring transducer a seawater temperature transducer and a dielectric housing of a non-contact transducer of UEP of seawater, made with an opening for the flow of sea water, are installed in the holes made in the casing, the axes of which are perpendicular to the generatrix of the cylindrical surface of the casing and are located in the plane of symmetry of the casing, which has openings for drainage of seawater flowing through a hole in the dielectric housing of the primary measuring transducer the transducer of the UEP of seawater and inclined holes in the body of the primary measuring transducer of the transducer of sea water temperature, and the holes providing access of seawater to the primary transducer of pressure, the outer cylindrical surface of the dielectric housing of the primary measuring transducer of the transducer of UEP of seawater on the incoming flow side is associated with the outer surface of the casing, each measuring unit has a sealed compartment, accommodating unit electronic modules, sealed compartment has a sealed cable entry.

The invention is illustrated by drawings, on which

figure 1 - design of the Converter of hydrophysical parameters (PHFP) of sea water (General view);

figure 2 - design of the Converter of hydrophysical parameters (PHFP) of sea water (General view with the casing removed);

figure 3 - design of the Converter of hydrophysical parameters (PHFP) of sea water (side view in cross section);

figure 4 - diagram of a non-contact converter UEP seawater;

figure 5 - design of the primary measuring transducer (PIP) of the temperature transducer.

In the drawings indicated:

1 - measuring unit;

2 - PIP non-contact converter UEP seawater;

3 - PIP transducer temperature of sea water;

4 - PIP pressure;

5 - block electronic modules;

6 - a casing;

7 - hole for installing the PIP non-contact converter UEP of sea water;

8 - a hole for installing a PIP transducer for sea water temperature;

9 - hole for the removal of sea water;

10 - hole that provides access to water in the pressure PIP;

11 - sealed cable entry;

12 - power transformer;

13 - measuring transformer;

14 - dielectric body of the contactless converter UEP;

15 - winding located on the toroidal core of the supply transformer 12;

16 - winding located on the toroidal core of the measuring transformer 13;

17 - volumetric fluid communication loop;

18 - source of alternating voltage;

19 - amplifier;

20 - detector;

21 - copper wire

22 - the first thin-walled cylinder,

23 - the second thin-walled cylinder,

24 - case PIP temperature Converter,

25 - inclined holes in the housing of the PIP temperature Converter,

26, 27 - welds,

28, 29 - contacts PIP temperature Converter,

30 - cover sealed compartments.

In the streamlined casing 6, holes 7 and 8 are made for each measuring unit for installing the PIP of the non-contact transducer of UEP of sea water and the PIP of the transducer of sea water temperature, respectively, as well as the hole 9 for draining sea water. The sealed compartments with the blocks 5 of the electronic modules are closed by a cover 30. In the cover 30 there are holes in which the PIP 2 of the non-contact UEP transducer of sea water and the PIP 3 of the seawater temperature transducer are sealed so that their conclusions are in the sealed compartments.

The non-contact converter for UEP of sea water contains a supply and measuring transformers 12 and 13 located in a dielectric housing 14, an AC voltage source 18 connected to a winding 15 located on the toroidal core of the supply transformer 12, connected in series to an amplifier 19, the input of which is connected to the winding 16, located on the toroidal core of the measuring transformer 13, and a detector 20, the output of which is the output of a contactless converter UEP. The volume loop 17 of the connection in figure 4 is shown conditionally limited. In fact, the boundaries of the volume of sea water involved in its formation are uncertain. The source of alternating voltage 18, the amplifier 19 and the detector 20 are part of the block 5 of the electronic modules and are located in sealed compartments of the measuring units.

PIP 3 of the temperature converter (see Fig. 5) contains a thin insulated copper wire 21 located between two hollow thin-walled cylinders 22 and 23, one of which (the first cylinder 22) is formed by a protrusion in the housing of the PIP 3, and the other (second cylinder 23) hermetically sealed, mainly laser-welded, with the first hollow thin-walled cylinder 22 and the housing 24 of the PIP 3, in which inclined holes 25 are made for the flow of sea water inside the first hollow thin-walled cylinder 22. The tightness of the connection of thin-walled cylinders 22 and 23 is provided by welds 26 and 27. The PIP signal 3 is issued for the contacts 28 and 29.

PIP 4 pressure transducer can be made in the form of a tensometric pressure transducer.

Block 5 of the electronic modules is a set of printed circuit boards of predominantly round shape, on which an AC voltage source 18, an amplifier 19, a detector 20, and measuring amplifiers for a PIP 3 of a sea water temperature transducer and a PIP 4 of pressure are implemented, the outputs of which and the output of the detector 20 are connected to the inputs of a multichannel analog-to-digital converter (ADC), the output of which is connected to a data transmission device, the output of which is the output of the HFP of sea water. In this case, the data transmission device is a controller of a data transmission interface, for example, an RS-232, RS-485, MIL-STD-1553 interface, etc.

Block 5 of the electronic modules may also contain a data processing device. In this case, the ADC output is connected to the input of the processing device, and the output of the PHPP of sea water is the output of the processing device.

The processing device can be arranged to store the collected data, as well as to calculate the salinity of sea water, the speed of sound propagation in sea water, the density of sea water, etc.

A microcontroller may be used as a data transmission device. The ADC can be integrated into the microcontroller. The microcontroller can also act as a data processing device and can be used to determine by calculation the salinity of sea water, the speed of sound propagation in sea water, and the density of sea water.

The Converter hydrophysical parameters of sea water works as follows. The transducer moves in seawater (for example, mounted on a mobile carrier). Sea water enters the inlets of the PIP 2 of the non-contact converter of the UEP of sea water and the PIP 3 of the converter of temperature of the sea water and passes through the PIP 2 of the contactless converter of the UEP of sea water and the PIP 3 of the converter of the temperature of sea water, respectively. Also, water penetrates through openings 10, providing access of water to the pressure PIP 4, and creates hydrostatic pressure on it.

Contactless converter UEP works as follows. Under the action of an alternating voltage, in particular, a frequency of 16 kHz, in a volumetric liquid communication coil 17, covering the toroidal cores of the supply and measuring transformers 12 and 13, EMF is excited and current flows proportional to the measured UEP of sea water. This current leads to the appearance of current in the winding 16 of the measuring transformer 13 operating in the current transformer mode. The output current signal of the measuring transformer 13 is amplified, detected and fed to the output of the UEP converter in the form of a voltage proportional to the measured UEP.

The signals of the PIP 2 of the non-contact transducers of the UEP of seawater, the PIP 3 of the transducer of the temperature of the sea water and the PIP 4 of the pressure are supplied to the corresponding blocks 5 of the electronic modules, where they are amplified and converted to digital form. The received digital data is transmitted via the communication channel to the output of the HFPP of sea water. In addition, blocks 5 of electronic modules can determine by calculation the salinity of sea water, the speed of sound propagation in sea water, and the density of sea water.

As a result of using the invention by reducing the disturbance of the water flow, the accuracy of measuring the hydrophysical parameters of sea water is improved, as well as the accuracy of determining the hydrophysical parameters of sea water obtained by calculation.

Thus, the presented drawings and description allow, using the existing elemental base, to produce PHPP of sea water in an industrial way and use it as a part of specialized complexes or systems for measuring hydrophysical parameters of sea water, such as electrical conductivity, temperature, pressure, which characterizes the invention as industrially applicable.

Literature

1. VP Butorin et al. Equipment for collecting and processing information for automatic monitoring and measuring stations of environmental monitoring systems of the ANKOS type / Sat. doc. Seminar Automation of pollution control. - M.: MDNTP. - 1988.

2. Water quality monitoring system / Nihon musen quiet // GRE Rev. - 1988, No. 26. - S.14-20.

3. System for monitoring surface water / Fukuchi Mitsuo, Hottori Hitoshi. - Proc. NIPR Symp.Polar Biol. - 1987, 1. - S. 47-55.

4. Burr P. An instrumented underwater towed vehicle. Oceanology internationale 69. Conf. technical sessions, day 1. - Brighton. - 1969 (England).

5. Analysis of Exploration of Mining Technology for Manganese Nodyles / Seabed Minerals Sessions. - Vol. 2. - United Ocean Economics and Technology Branch (Published in cooperation with the United Nations by Graham & Trotman Ltd.). - 1984. - P.20, fig. 3.

6. RF patent №2030747 for the invention, IPC G01N 33/18, 1990

7. Witness. RF №301 for a utility model, IPC В63В 38/00, 1993

8. Witness. RF №2797 for a utility model, IPC В63В 35/00, 1996

9. Witness. RF №3041 for a utility model, IPC G01N 27/00, 1996

10. Auth. witness USSR No. 1029063 for an invention, IPC G01N 27/02, 1981

11. Witness. RF №29376 for a utility model, IPC G01N 27/00, 2003 (prototype).

Claims (1)

A transducer of hydrophysical parameters of seawater, comprising at least one measuring unit including a transducer of electrical conductivity (SEC) of seawater, including a primary transducer of transducer of UEP of seawater, a transducer of sea water temperature, including a primary measuring transducer a transducer of a transducer of sea water temperature, a transducer of pressure, while the primary measuring transducer of the transducer is a tamper The sea water tour contains a thin insulated copper wire located between two hollow thin-walled cylinders, the first hollow thin-walled cylinder is formed by a protrusion in the body of the primary measuring transducer of the sea water temperature, the second hollow thin-walled cylinder is hermetically sealed with the first hollow thin-walled cylinder and the body of the primary measuring transducer of the temperature transducer sea water, in which inclined holes are made for the flow of sea water inside The first hollow thin-walled cylinder, characterized in that it contains a casing, the outer surface of which on the side of the incoming flow has the shape of a streamlined cylinder, while in each measuring unit, the primary measuring transducer of the non-contact UEP seawater transducer contains the supply and measuring transformers located in the dielectric casing with windings located on the toroidal cores, the primary measuring transducer of the seawater temperature transducer and the dielectric housing of the primary measuring transducer of the non-contact UEP of seawater, made with an opening for the flow of sea water, is installed in the holes made in the casing, the axes of which are perpendicular to the cylindrical surface of the casing and are located in the symmetry plane of the casing, which has openings for draining sea water, flowing through an opening in the dielectric casing of the primary measuring transducer of the non-contact transducer of UEP of sea water and inclined openings in the body of the primary measuring transducer of the sea water temperature transducer, and openings providing access of sea water to the primary pressure transducer, the outer cylindrical surface of the dielectric housing of the primary measuring transducer of the non-contact UEP transducer of sea water from the incoming flow side is interfaced with the outer surface of the casing, each measuring the unit has a sealed compartment in which the electronic module unit is located second, sealed compartment has a sealed cable entry.

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