CN113465781A - Calibration device for thermohaline measuring instrument, marine survey vessel and calibration method for thermohaline measuring instrument - Google Patents
Calibration device for thermohaline measuring instrument, marine survey vessel and calibration method for thermohaline measuring instrument Download PDFInfo
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Abstract
The invention provides a calibration device of a thermohaline measuring instrument, an ocean exploration ship and a calibration method of the thermohaline measuring instrument, relating to the technical field of calibration of the thermohaline measuring instrument, and the calibration device of the thermohaline measuring instrument comprises the following components: the system comprises a constant temperature instrument box, a salinity meter, a main frame, a constant temperature seawater tank, a temperature sensor standard device and a horizontal stabilizer; the constant temperature instrument box and the salinity meter are respectively arranged on the main frame, and the temperature sensor standard is arranged in the constant temperature instrument box; the constant-temperature seawater tank is connected to the main frame in a rotating mode around the X axis, the horizontal stabilizer is connected with the constant-temperature seawater tank in a transmission mode, and the horizontal stabilizer is used for enabling the constant-temperature seawater tank to be kept in a horizontal state. The calibration device for the thermohaline measuring instrument, the marine survey ship and the calibration method for the thermohaline measuring instrument, provided by the invention, can overcome the influence of marine environment and realize the calibration of the thermohaline measuring instrument.
Description
Technical Field
The invention relates to the technical field of calibration of a thermohaline measuring instrument, in particular to a thermohaline measuring instrument calibration device, a marine survey ship and a thermohaline measuring instrument calibration method.
Background
At present, most calibration and calibration devices for ocean scientific research temperature and salt measuring instruments are arranged in large laboratories on land, the components of calibration equipment are complex, and the whole set of system cannot be migrated to other places for use. The thermohaline measuring instrument can only be checked and calibrated before the start of a voyage or after the end of the voyage. However, the thermohaline measuring instruments of devices such as deep sea ocean-going submerged buoy and ocean buoy need to be installed and observed for a long time and are far away from the land, which causes a series of problems such as long inspection round trip time and high consumption cost, and also causes the technical problems that the temperature sensor and the salinity sensor drift along with the fact that the calibration time of the sensor exceeds a specified period, and the accuracy of the measured temperature and salinity data is reduced.
Disclosure of Invention
The invention aims to provide a calibration device of a thermohaline measuring instrument, a marine survey ship and a calibration method of the thermohaline measuring instrument, which can overcome the influence of marine environment and realize the calibration of the thermohaline measuring instrument.
In a first aspect, the present invention provides a calibration apparatus for a thermohaline measurement instrument, including: the system comprises a constant temperature instrument box, a salinity meter, a main frame, a constant temperature seawater tank, a temperature sensor standard device and a horizontal stabilizer;
the constant temperature instrument box and the salinity meter are respectively arranged on the main frame, and the temperature sensor standard is arranged in the constant temperature instrument box;
the constant-temperature seawater tank is connected to the main frame in a rotating mode around an X axis, the horizontal stabilizer is connected with the constant-temperature seawater tank in a transmission mode, and the horizontal stabilizer is used for enabling the constant-temperature seawater tank to be kept in a horizontal state.
With reference to the first aspect, the present disclosure provides a first possible implementation manner of the first aspect, wherein the horizontal stabilizer includes: an attitude adjustment drive and a stabilizer frame;
the stabilizer frame is connected with the constant-temperature seawater tank, and the stabilizer frame and the constant-temperature seawater tank are connected to the main frame in a rotating mode around an X axis;
the posture adjustment driving piece is installed on the main frame, and the posture adjustment driving piece is in transmission connection with the stabilizer frame.
With reference to the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the constant-temperature seawater tank comprises: the water tank comprises a water tank body, a temperature control tube and a sampling tube;
the temperature control pipe is arranged in the water tank body and extends upwards from the bottom of the inner cavity of the water tank body;
one end of the sampling tube is communicated with the inner cavity of the water tank body in a fluid mode, and the other end of the sampling tube extends to the outside of the water tank body.
With reference to the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein a standard seawater supply facility is installed on the main frame.
In a second aspect, the invention provides a marine vessel comprising: the surveying vessel comprises a surveying vessel body and the calibration device for the temperature and salt measuring instrument, wherein the main frame is installed on the surveying vessel body, a swinging axis of the constant-temperature seawater tank extends along the horizontal direction, and the constant-temperature seawater tank is located on a centerline plane of the surveying vessel body.
In a third aspect, the calibration method for the thermohaline measurement instrument provided by the invention comprises the following steps:
putting a thermohaline measuring instrument to be calibrated and a temperature sensor standard device in a thermostatic instrument box into a thermostatic seawater tank;
gradually reducing the set temperature of the constant-temperature seawater tank, and respectively recording the test values of the thermohaline measuring instrument and the temperature sensor standard instrument under a plurality of set temperature conditions;
and calculating the temperature indicating value error of the thermohalimeter.
With reference to the third aspect, the present invention provides a first possible implementation manner of the third aspect, wherein the step of calculating the temperature indication error of the thermohalimeter includes:
and calculating the difference value of the arithmetic mean value of the readings of the thermohalimeter and the arithmetic mean value of the readings of the temperature sensor standard under each set temperature condition.
With reference to the third aspect, the present invention provides a second possible implementation manner of the third aspect, wherein the method for calibrating a thermohalimeter further includes:
respectively sampling the seawater in the constant-temperature seawater tank under the conditions of all set temperatures;
respectively detecting salinity data of the seawater sample under each set temperature condition by using the thermohalimeter and the salinity meter;
and calculating the salinity indication error of the thermohalimeter.
With reference to the second possible implementation manner of the third aspect, the present invention provides a third possible implementation manner of the third aspect, wherein the step of calculating the salinity indication error of the thermohalimeter comprises:
calculating the difference between the arithmetic mean of the conductivity indications of the thermohalimeter and the arithmetic mean of the conductivity indications of the salinity meter at each set temperature condition.
In combination with the third aspect, the present disclosure provides a fourth possible embodiment of the third aspect, wherein the set temperature is gradually decreased from 35 ℃ to 0 ℃, and any set temperature is maintained for 5 minutes or more.
The embodiment of the invention has the following beneficial effects: the constant temperature instrument box and the salinity meter are respectively arranged on the main frame, the constant temperature seawater tank is rotatably connected to the main frame around an X axis, the horizontal stabilizer is in transmission connection with the constant temperature seawater tank, the constant temperature seawater tank is kept in a horizontal state through the horizontal stabilizer, the constant temperature instrument box stores the temperature sensor standard, the influence of the marine environment can be reduced, and the calibration of the temperature and salinity meter in the marine environment can be realized.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a calibration apparatus of a thermohalimeter according to an embodiment of the present invention;
FIG. 2 is a top view of a calibration apparatus for a thermohalimeter according to an embodiment of the present invention;
FIG. 3 is a front view of a calibration apparatus for a thermohaline measurement device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a horizontal stabilizer of a calibration apparatus of a thermohalimeter according to an embodiment of the present invention;
fig. 5 is a constant temperature seawater tank of the calibration device of the thermohaline measuring instrument provided in the embodiment of the present invention; a schematic diagram of (a);
FIG. 6 is a schematic diagram of a main frame of a calibration apparatus for a thermohaline measurement device according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a standard seawater supply device of a calibration apparatus for a thermohalimeter according to an embodiment of the present invention.
Icon: 1-constant temperature instrument box; 2-a salinity meter; 3-a main frame; 31-installation area of constant temperature and humidity instrument box; 32-laboratory salinity meter installation; 33-display mounting area; 34-a constant temperature seawater tank installation area; 35-a constant temperature water tank horizontal stabilizer mounting area; 36-calibration system mounting base; 37-calibrating a device host installation area by the thermohaline measuring instrument; 38-attitude controller mount area; 39-standard seawater supply system installation area; 4-calibrating the host; 5-a control line; 6-constant temperature seawater tank; 61-a sink body; 62-temperature control tube; 63-sampling tube; 64-a temperature controller; 7-attitude controller; 8-standard seawater supply equipment; 81-sea water pipe; 82-seawater storage tank holder; 83-seawater storage tank; 84-sea water pump; 9-temperature sensor standard; 10-a seawater sampling bottle; 11-a display; 12-smooth control line; 13-a horizontal stabilizer; 131-attitude adjustment drives; 132-stabilizer frame.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "physical quantity" in the formula, unless otherwise noted, is understood to mean a basic quantity of a basic unit of international system of units, or a derived quantity derived from a basic quantity by a mathematical operation such as multiplication, division, differentiation, or integration.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1, fig. 2 and fig. 3, a calibration apparatus for a thermohalimeter according to an embodiment of the present invention includes: the system comprises a constant temperature instrument box 1, a salinity meter 2, a main frame 3, a constant temperature seawater tank 6, a temperature sensor standard 9 and a horizontal stabilizer 13; the constant temperature instrument box 1 and the salinity meter 2 are respectively arranged on the main frame 3, and the temperature sensor standard 9 is arranged in the constant temperature instrument box 1; the constant-temperature seawater tank 6 is rotatably connected to the main frame 3 around an x axis, the horizontal stabilizer 13 is in transmission connection with the constant-temperature seawater tank 6, and the horizontal stabilizer 13 is used for keeping the constant-temperature seawater tank 6 in a horizontal state.
Specifically, the constant-temperature seawater tank 6 can be driven to rotate around the x axis through the horizontal stabilizer 13, so that the constant-temperature seawater tank 6 is kept in a horizontal state, and the temperature control errors of the seawater in the constant-temperature seawater tank 6 in the levelness and the verticality direction are reduced. In addition, the temperature sensor standard device 9 can be stored in the constant temperature instrument box 1, and the influence of the state of the marine vessel on calibration is further reduced.
As shown in fig. 1 and 4, in the embodiment of the present invention, the horizontal stabilizer 13 includes: an attitude adjusting driver 131 and a stabilizer frame 132; the stabilizer frame 132 is connected with the constant-temperature seawater tank 6, and the stabilizer frame 132 and the constant-temperature seawater tank 6 are connected to the main frame 3 around the x axis in a rotating manner; the posture adjustment driving member 131 is mounted on the main frame 3, and the posture adjustment driving member 131 is in transmission connection with the stabilizer frame 132.
Specifically, the attitude adjustment driving member 131 includes two motors, the stabilizer frame 132 is installed between the two motors, and the stabilizer frame 132 is synchronously adjusted by the two motors to swing around the x axis, so that the attitude of the constant-temperature seawater tank 6 is adjusted, and the constant-temperature seawater tank 6 is maintained stably.
As shown in fig. 1 and 5, the constant-temperature seawater tank 6 includes: a water tank body 61, a temperature control tube 62 and a sampling tube 63; the temperature control pipe 62 is installed in the water tank body 61, and the temperature control pipe 62 extends upwards from the bottom of the inner cavity of the water tank body 61; one end of the sampling tube 63 is in fluid communication with the inner cavity of the water tank body 61, and the other end of the sampling tube 63 extends to the outside of the water tank body 61.
Specifically, the temperature control pipe 62 includes a spiral pipe member, which is disposed along the inner wall of the water tank body 61, and the spiral pipe member encloses an area to form a temperature control area. The sampling pipe 63 in the tank body 61 extends to the bottom of the inner cavity of the tank body 61 so that the standard seawater in the tank body 61 can be sucked and discharged from the sampling pipe 63. The constant temperature seawater tank 6 adopts the temperature controller 64 to control the temperature control pipe 62 to change the temperature according to the temperature detection data, and further adjusts the set temperature, thereby adjusting the temperature of the seawater in the tank body 61.
As shown in fig. 1 and 7, a standard seawater supply facility 8 is installed on the main frame 3, and the standard seawater supply facility 8 includes: seawater pipe 81, sea water storage jar fixer 82, sea water storage jar 83 and sea water pump 84, sea water storage jar fixer 82 is connected with sea water storage jar 83, and sea water storage jar fixer 82 is used for connecting main frame 3. The seawater pump 84 is in fluid communication with the seawater storage tank 83, the seawater pipe 81 is in communication with the seawater pump 84, and the seawater pump 84 can make the standard seawater in the seawater storage tank 83 flow into the constant temperature seawater tank 6 through the seawater pipe 81.
As shown in fig. 1, 4 and 6, the main frame 3 has a constant temperature and humidity instrument box installation area 31, a laboratory salinity meter installation area 32, a display installation area 33, a constant temperature and humidity instrument box installation area 34, a constant temperature water tank horizontal stabilizer installation area 35, a calibration system installation base 36, a temperature and salinity meter calibration device host installation area 37, an attitude controller installation area 38 and a standard seawater supply system installation area 39, the temperature sensor calibrator 9 is installed in the constant temperature and humidity instrument box installation area 31, the salinity meter 2 is installed in the laboratory salinity meter installation area 32, the display 11 is installed in the display installation area 33, the constant temperature seawater tank 6 and the horizontal stabilizer 13 are both installed in the constant temperature and humidity instrument box installation area 34, the attitude adjustment driving member 131 of the horizontal stabilizer 13 is installed in the constant temperature water tank horizontal stabilizer installation area 35, the calibration host 4 is installed in the temperature and salinity meter calibration device host installation area 37, attitude controller 7 is installed in attitude controller installing zone 38, and standard sea water supply equipment 8 is installed in standard sea water supply system installing zone 39, and demarcation host computer 4 is connected through control line 5 with constant temperature sea water groove 6, and horizontal stabilizer 13 is connected through steady control line 12 with attitude controller 7, bears through calibration system installation base 36 to the installation of equipment integration has been realized.
As shown in fig. 1 to 7, the assembling steps of the calibration device of the thermohalimeter include:
1. the main frame 3 is installed, the selection of the installation position of the shipborne laboratory is firstly completed, and the site selection principle is to select the position which is close to the center line of the ship and has small shaking as much as possible. And after site selection is finished, fixing the main frame 3 by using bolts.
2. The horizontal posture stabilization device installation is completed by first installing the posture controller 7 in the posture controller installation area 38 and then installing the horizontal stabilizer 13 in the constant-temperature water tank horizontal stabilizer installation area 35.
3. The assembly of the constant temperature seawater tank 6 is completed by first installing the temperature controller 64 at the bottom of the tank body 61, then connecting the temperature control pipe 62 with the temperature controller 64, and then installing the sampling pipe 63.
4. The assembled constant temperature seawater bath 6 is connected to the stabilizer frame 132, and then the attitude controller 7 and the attitude adjusting drive 131 are connected to each other by the stationary control line 12.
5. The seawater storage tank 83 is installed in the standard seawater supply system installation area 39, then the seawater pipe 81 and the seawater pump 84 are installed on the top of the seawater storage tank, the seawater pipe 81 is connected with the water outlet of the seawater pump 84, then the seawater storage tank 83 is fixed by the seawater storage tank fixer 82, and the standard seawater can be sucked into the seawater storage tank 83 through the seawater pump 84.
6. The calibration main unit 4 is installed in the installation area 37 of the calibration device main unit of the thermohalimeter, and then the calibration main unit and the temperature controller 64 are connected by the control line 5.
7. The constant temperature instrument box 1 is installed in the constant temperature and humidity instrument box installation area 31, the salinity meter 2 is installed in the laboratory salinity meter installation area 32, and then the seawater sampling bottle 10 is installed on the top of the salinity meter 2.
8. The display 11 is mounted in the calibration system display mounting area 33 and the temperature sensor standard 9 is placed in the thermostatic instrument housing 1.
Example two
As shown in fig. 1, 2 and 3, a marine research vessel according to an embodiment of the present invention includes: the surveying vessel body and the calibration device for the temperature and salt measuring instrument provided by the first embodiment are characterized in that the main frame 3 is installed on the surveying vessel body, the swinging axis of the constant-temperature seawater tank 6 extends along the horizontal direction, and the constant-temperature seawater tank 6 is positioned on the centerline plane of the surveying vessel body. In the embodiment of the present invention, the inclination caused by the shaking of the hull can be adjusted by the horizontal stabilizer 13, thereby ensuring the stable attitude of the constant temperature seawater tank 6. And, the comprehensive investigation ship of ocean possesses the technological effect of warm salt measuring apparatu calibration device, can overcome the marine environment influence and realize warm salt measuring apparatu and mark in the navigation in-process, and no longer repeated here.
EXAMPLE III
As shown in fig. 1, fig. 2 and fig. 3, the calibration method for a thermohalimeter according to an embodiment of the present invention includes the following steps:
putting a thermohaline measuring instrument to be calibrated and a temperature sensor standard 9 in a constant temperature instrument box 1 into a constant temperature seawater tank 6; gradually reducing the set temperature of the constant-temperature seawater tank 6, and respectively recording the test values of the thermohaline measuring instrument and the temperature sensor standard 9 under a plurality of set temperature conditions; and calculating the temperature indicating value error of the thermohalimeter. The calibration experiment temperature is carried out from high to low, and the temperature is closer to the measurement process of the thermohaline measuring instrument from the sponge to the seabed, so that the calibration experiment is more accurate.
As shown in fig. 1-7, a device test may be performed prior to calibration, the testing steps including:
the constant temperature instrument box 1 is started, the set temperature is 20 ℃, and the relative humidity is 80%. The constant temperature instrument box 1 is always in a starting state during the installation of the onboard laboratory of the calibration device, and the temperature sensor standard 9 is stored in the constant temperature instrument box 1 when being idle.
Starting the attitude controller 7, observing the attitude of the constant-temperature seawater tank 6, extending the water outlet of the seawater pipe 81 into the inner cavity of the constant-temperature seawater tank 6, starting the seawater pump 84, and injecting standard seawater into the seawater tank body 61.
The calibration host 4 sets the standard seawater temperature in the constant-temperature seawater tank 6, starts a temperature control test, and puts the two temperature sensor standards 9 into the constant-temperature seawater tank 6.
And (3) observing the readings of the display 11, recording data when the difference between the values of the two temperature sensor standards 9 and the set temperature reaches the calibration precision requirement (the difference is smaller than a threshold value), and injecting standard seawater into the seawater sampling bottle 10 through the sampling pipe 63 to finish the test of the calibration part of the temperature sensors.
And (3) putting the seawater sampling bottle 10 into a salinity meter 2 for salinity measurement, and completing the test of the calibration part of the salinity sensor.
The calibration process comprises the following steps: under the condition that the equipment is stably powered, the temperature of the shipborne laboratory is kept constant at 20 +/-1 ℃ and the humidity is kept constant at 50% +/-5 RH, a seawater pump 84 is started to inject standard seawater in a seawater storage tank 83 into a constant-temperature seawater tank 6, and the water injection is stopped when the temperature control pipe 62 is immersed for at least 10 cm.
The thermohaline meter to be calibrated is fixed to the temperature sensor standard 9 removed from the thermometer housing 1 (in principle the sensors of both are as close as possible but cannot interact with each other). Then the two are put into a constant temperature seawater tank 6, and the temperature and salt measuring instrument is put in the center of the constant temperature seawater tank 6 as much as possible so as to reduce the influence of the wall of the seawater tank and the temperature control pipe 62 on a sensor in the temperature and salt measuring instrument. Subsequently, the calibration master 4 is operated to set the control temperature to 35 ℃, so that the temperature of seawater in the constant-temperature seawater tank 6 is kept stable at 35 ℃ (preliminary approximate temperature control). Then, gradually cooling and controlling the temperature, and carrying out calibration experiments under the conditions of various set temperatures.
The step of calculating the temperature indication error of the thermohalimeter comprises the following steps: the difference between the arithmetic mean of the readings of the thermohalimeter and the arithmetic mean of the readings of the temperature sensor standard 9 is calculated at each set temperature.
Specifically, the temperature indicating error is calculated by the formula of delta Tj＝tjp-TJPIn the formula: t is tjpIs the arithmetic mean value of the readings of the thermohalimeter at the jth temperature detection point, in units;
TJPis the arithmetic mean value of the readings on the jth temperature detection point of the temperature sensor standard, and the unit is;
ΔTjthe value error is indicated on the jth temperature detection point for the thermohalimeter. The error value is the maximum absolute value of the calculated value.
tjpthe arithmetic mean value of the readings of the thermohalimeter at the jth temperature detection point is;
n is the number of readings of the thermohaline measuring instrument at the jth temperature detection point, and is generally 10;
σjiand (4) taking the temperature repeatability with the maximum absolute value as the temperature repeatability of the thermohalimeter at the jth temperature verification point.
The calibration method of the thermohaline measuring instrument further comprises the following steps:
respectively sampling the seawater in the constant-temperature seawater tank 6 under each set temperature condition;
respectively detecting salinity data of the seawater sample under each set temperature condition by using a thermohalimeter and a salinity meter 2;
and calculating the salinity indicating value error of the thermohalimeter.
Wherein, the step of calculating the salinity indication error of the thermohalimeter comprises the following steps: the difference between the arithmetic mean of the conductivity indications of the thermohalimeter and the arithmetic mean of the conductivity indications of the salinity meter 2 is calculated at each set temperature.
Specifically, the salinity index error value calculation formula is delta Cj＝Cjp-CjvIn the formula: cjpThe arithmetic mean value of conductivity indication values of the thermohaline measuring instrument at the jth temperature verification point is in the unit of ms/cm;
Cjvthe arithmetic mean value of the standard conductivity at the jth temperature detection point is in the unit of ms/cm;
ΔCjand taking the maximum absolute value of the calculated result as the conductivity indication error of the thermohaline measuring instrument.
Cjpthe arithmetic mean value of the conductivity reading of the thermohaline measuring instrument at the jth temperature verification point is ms/cm;
n is the number of conductivity readings of the thermohaline measuring instrument at the jth temperature verification point, and is generally 10;
σjcconductivity repeatability for the thermohalimeter at the jth temperature assay point. And taking the maximum value of the absolute value of the calculation result as the conductivity repeatability of the thermohaline measuring instrument.
Finally, the calibrated thermohaline measuring instrument and the temperature sensor standard 9 are taken out from the constant-temperature seawater tank 6, washed clean by fresh water, read data and calculate delta Tj、σji、ΔCjAnd σjc。
It is emphasized that the set temperature is gradually reduced from 35 ℃ to 0 ℃ and any set temperature is maintained for a period of time of 5 minutes or more. In the process of temperature reduction and temperature control, calibration experiments of six temperature points of 30 ℃, 25 ℃, 20 ℃, 15 ℃, 10 ℃, 5 ℃ and 0 ℃ are carried out in sequence, and when the temperature reaches a set value, data of at least five minutes are recorded for calculating an error value.
In order to realize the reference tracing, the temperature sensor standard 9 and the salinity meter 2 can be sent to a land calibration laboratory for calibration and calibration according to a preset time interval (for example, once a year frequency) after the marine comprehensive science research ship returns to the mother port, so that the reference tracing of the temperature value and the salinity value can be completed.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A calibration device for a thermohaline measurement instrument is characterized by comprising: the system comprises a constant temperature instrument box (1), a salinity meter (2), a main frame (3), a constant temperature seawater tank (6), a temperature sensor standard device (9) and a horizontal stabilizer (13);
the constant temperature instrument box (1) and the salinity meter (2) are respectively arranged on the main frame (3), and the temperature sensor standard device (9) is arranged in the constant temperature instrument box (1);
the constant-temperature seawater tank (6) is connected to the main frame (3) in a rotating mode around an X axis, the horizontal stabilizer (13) is in transmission connection with the constant-temperature seawater tank (6), and the horizontal stabilizer (13) is used for enabling the constant-temperature seawater tank (6) to be kept in a horizontal state.
2. Thermowell gauge calibration arrangement according to claim 1, characterized in that the horizontal stabilizer (13) comprises: an attitude adjustment drive (131) and a stabilizer frame (132);
the stabilizer frame (132) is connected with the constant-temperature seawater tank (6), and the stabilizer frame (132) and the constant-temperature seawater tank (6) are connected to the main frame (3) in a rotating manner around an x axis;
the posture adjusting driving piece (131) is installed on the main frame (3), and the posture adjusting driving piece (131) is in transmission connection with the stabilizer frame (132).
3. Thermohalimeter calibration arrangement according to claim 1, characterized in that said constant temperature seawater bath (6) comprises: a water tank body (61), a temperature control pipe (62) and a sampling pipe (63);
the temperature control pipe (62) is arranged in the water tank body (61), and the temperature control pipe (62) extends upwards from the bottom of the inner cavity of the water tank body (61);
one end of the sampling tube (63) is in fluid communication with the inner cavity of the water tank body (61), and the other end of the sampling tube (63) extends to the outside of the water tank body (61).
4. Thermohaline gauge calibration arrangement according to claim 1, characterized in that a standard seawater supply (8) is installed on the main frame (3).
5. A marine vessel, comprising: the surveying vessel body and the calibration device of the thermohaline measuring instrument according to any one of claims 1-4, wherein the main frame (3) is mounted on the surveying vessel body, a swinging axis of the constant-temperature seawater tank (6) extends along a horizontal direction, and the constant-temperature seawater tank (6) is located on a centerline plane of the surveying vessel body.
6. A calibration method for a thermohaline measuring instrument is characterized by comprising the following steps:
putting a thermohaline measuring instrument to be calibrated and a temperature sensor standard device (9) in a thermostatic instrument box (1) into a constant-temperature seawater tank (6);
gradually reducing the set temperature of the constant-temperature seawater tank (6), and respectively recording the test values of the thermohaline measuring instrument and the temperature sensor standard instrument (9) under a plurality of set temperature conditions;
and calculating the temperature indicating value error of the thermohalimeter.
7. The method for calibrating a thermowell meter according to claim 6, wherein the step of calculating the temperature indication error of the thermowell meter comprises:
and calculating the difference value of the arithmetic mean value of the readings of the thermohalimeter and the arithmetic mean value of the readings of the temperature sensor standard device (9) under each set temperature condition.
8. The thermowell meter calibration method according to claim 6, further comprising:
respectively sampling the seawater in the constant-temperature seawater tank (6) under each set temperature condition;
respectively detecting salinity data of the seawater sample under each set temperature condition by using the thermohalimeter and the salinity meter (2);
and calculating the salinity indication error of the thermohalimeter.
9. The method for calibrating a thermohalimeter according to claim 8, wherein the step of calculating the salinity indication error of the thermohalimeter comprises:
the difference between the arithmetic mean of the conductivity indications of the thermohalimeter and the arithmetic mean of the conductivity indications of the salinity meter (2) is calculated at each set temperature.
10. The calibration method of the thermohalimeter according to claim 6, characterized in that the set temperature is gradually decreased from 35 ℃ to 0 ℃, and the holding time of any set temperature is greater than or equal to 5 minutes.
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