CN115979297B - Calibration system and calibration method for large and medium ocean pressure type depth sounder - Google Patents
Calibration system and calibration method for large and medium ocean pressure type depth sounder Download PDFInfo
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Abstract
The invention discloses a calibration system and a calibration method of a large and medium ocean pressure type depth finder, wherein the calibration system comprises a pressure standard device and a calibration device; the calibrating device comprises an external screwed joint, a filter, a transfer column, a left transfer tube, a platform, a left transfer column, a left channel bypass component, a right transfer column, a middle channel bypass component, a right transfer tube and a pressure transfer piece. The invention solves the problems of long working time and serious labor consumption of the traditional calibration method, and can greatly improve the calibration efficiency of the pressure sensor of the large and medium ocean pressure type depth finder.
Description
Technical Field
The invention relates to the technical field of ocean measurement, in particular to a calibration system and a calibration method of a large and medium ocean pressure type depth finder.
Background
A thermal salt Depth measuring instrument (CTD) is the most commonly used marine measuring instrument, and is usually loaded with at least a "salinity (Conductivity)" "connectivity" sensor, a "Temperature" sensor, a "T" sensor, and a "Depth/Pressure" sensor. Various other parameter sensors such as Sound Velocity (SV), dissolved Oxygen (DO), turbidity, chlorophyll and the like are also commonly selected and integrated into more complex marine measuring instruments. In summary, marine surveying instruments are typically a combination of the above-mentioned series of sensors, but the most basic quantities generally indispensable are C, T and D. Of course, manufacturers also compose the products in the form of single T (soloT), single D (soloD), or warm-pressing combination (TD) or warm salt Combination (CT) as desired.
The ocean can typically be separated into 5 layers of water from the depth: an upper ocean layer (more than 200 m), a middle ocean layer (200 m-1 km), a deep ocean layer (1 km-4 km), a deep ocean layer (4 km-6 km) and a super deep ocean layer (less than 6 km). The depth of 90% of the sea area in the world ocean does not exceed 6km.
In general: the CTD with medium and low measuring ranges is mainly used for offshore, shallow sea, ocean upper layers and ocean middle layers, the measuring range of the pressure sensor is generally 20m-1km water depth, and the small number of the pressure sensor is 2km water depth. Such instruments are shipped calibrated in pressure tanks at relatively low and medium pressures, and therefore typically do not have a threaded interface for high pressure calibration.
In contrast, CTDs deployed in deep ocean and deep-in-the-river layers can reach or exceed 6km in depth scale. It requires internal threads at the pressure outlet to facilitate its calibration with the high pressure standard connection at the time of factory calibration.
"Sea water (sea) depth" is one of the most basic scales for measuring various parameters of physical sea, and a marine pressure type depth finder means a series of marine measuring instruments for measuring sea water depth functions, which are provided with pressure sensors (D). The large and medium ocean pressure type depth measuring instrument is generally provided with temperature, salinity and depth sensors (at least comprising pressure sensors) and a pressure sensor threaded interface, and is mainly used for ocean instruments for measuring ocean parameters of deep ocean layers and deep-layer ocean.
The prior large and medium ocean pressure type depth sounder is mainly characterized in that:
1. The morphology is large or medium.
2. The outlet of the pressure sensor is an internal thread adapter connector.
3. The measuring range is larger, usually 1km-6km, and mainly 4km-6 km.
4. Most are ultra-high pressure resistant metal enclosures.
5. Are all marine measuring instruments which obtain the seawater pressure value through the pressure sensor so as to be converted into the depth value.
6. The absolute value of the maximum allowable error of the pressure sensor is usually 0.015% fs-0.3% fs, and is mainly 0.1% fs and 0.05% fs.
7. The device is a direct-reading instrument or has the function of directly reading measurement data after being connected with a data line, and can record continuously.
The common calibration method for the large and medium ocean pressure type depth gauge (hereinafter referred to as calibrated instrument) with the pressure sensor internal thread adapter interface is as follows: the etalon and the calibrated instrument are placed in a constant temperature chamber at (20 + -1) deg.C so that the temperature of the device is equilibrated. The calibrated instrument is placed on a lifting platform, so that the pressure interface position of the calibrated instrument and the reference line of the piston type pressure gauge are at the uniform height as much as possible. The indoor atmospheric pressure value was recorded. And opening the recording software of the calibrated instrument, and recording the pressure indication value and the pressure original value (if any) of the calibrated instrument in the current atmospheric pressure, wherein the pressure indication value and the pressure original value are initial zero points. A thin high-pressure-resistant pipe is led out from the pressure testing port of the piston type pressure gauge, and the terminal end of the high-pressure pipe is externally connected with a movable internal thread interface. And connecting the internal threaded interface of the pressure standard device with the external threaded interface at one end of the pressure adapter. And the other end of the pressure adapter is connected with an internal thread pressure interface of the detected instrument.
The piston pressure gauge is used for lifting and lowering by adding and subtracting weights, 6-7 stable standard pressure balance points are manufactured and recorded in the range of the calibrated instrument, and meanwhile, a computer is used for recording the pressure indication value and the pressure original value (if any) of the calibrated instrument. After the depressurization is completed, the calibrated instrument is disconnected from the etalon. The pressure indication, the original value of the pressure (if any) of the calibrated instrument is continuously recorded, which is the end zero point. I.e. including the initial and final zero points, the up-down pressure process creates a total of 13-15 pressure calibration points. And finally, comprehensively calculating the pressure indication value and the original value of the calibrated instrument, the pressure standard value and the atmospheric pressure value of each calibration point, and thus, the calibration of the pressure type depth finder can be completed.
The existing calibration method mainly has the following problems:
1. The working time is long. The conventional method calibrates 1 instrument at a time, and each calibration point requires the system to be stable for about 3 minutes. And calculating the time of connection, debugging and the like, wherein the calibration test working time of each instrument is about 1h. And processing the data in the later period, cleaning and preprocessing the data according to the condition of manual operation and calibration at the time, and finishing the data into standardized data capable of issuing certificates, wherein the time is about 1h. That is, at least 2 hours are required for 1 instrument pressure sensor calibration. The common situation is that about 30 marine pressure type depth detectors with different types and the same measuring range are checked in the laboratory at the same time. If working is done in a conventional manner, the overall working time is 60 hours. Calculated on an 8 hour working day, this was done on about 7.5 days.
2. The labor cost is serious. As described above, a common pressure laboratory may simultaneously check 30 large and medium ocean pressure depth gauges with the same measuring range. If each pressure calibration point is to carry a stainless steel weight once (about 5 kg/time), 390 times of carrying is required, and about 2 tons of weight is carried, the physical effort is very serious. Taking a 6km range CTD as an example, 5kg each time, at least 14 times, 70 kg/station are required to be moved. 30 times by 70 kg/time=2100 kg, i.e. 2.1 tons, calculated according to 30. The weight is 5600 times, about 28 tons of weight is needed to be moved in the whole test process according to 400 times of large and medium ocean pressure type sounding meters to be checked each year.
Description of several terms of art:
The pressure adapter is a small adapter device which is hollow and high-pressure resistant and is provided with external threads at two ends and is used for connecting a standard device and a calibrated instrument. The connection end of the calibration device with the standard is defined as an S end, and the connection end of the calibration device with the standard is defined as a D end. S represents Standard and D represents Device.
The special data line is a cable for connecting the data output end of the calibrated instrument with the data port of the computer and transmitting data. According to different types of the calibrated instrument, the connecting end of the device to be calibrated can be in various modes such as a 2-core-6-core watertight joint, a type-C, micro-USB and the like; the data port of the computer and the computer can be in the forms of an RS232 type COM port, an RS485 type COM port, a USB type and the like. In general, the connection end of the device to be calibrated is mostly 4-core watertight connector, and the data port of the computer is mostly RS232 type. The special data line which is connected with the computer and has an RS232 type COM port is generally provided with two leads, is used for being externally connected with a direct-current power supply, has a common power supply mode of 12V and is used when the electric quantity of a battery in a calibrated instrument is insufficient.
Potential difference: from a vertical perspective, there is often a certain difference in height between the reference position of the etalon and the pressure sensor of the instrument under test. If the conductive medium in this level difference is a liquid (sebacate or water), its effect is often considered. In the case of gaseous media, the gas density is only about 10% -20% of that of the same conditions at room temperature and (10-20) MPa, and the influence of such gas column differences is negligible.
Pressure conductive medium: and the medium is used for transmitting the standard pressure value manufactured by the pressure standard device to the pressure sensor of the detected instrument. The liquid medium is typically sebacate or water; the gaseous medium is typically high purity nitrogen or compressed air.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a calibration system and a calibration method for a large and medium ocean pressure type depth finder, which solve the problems of long working time and serious labor consumption of the traditional calibration method and can greatly improve the calibration efficiency of a pressure sensor of the large and medium ocean pressure type depth finder.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
A calibration system of a large and medium ocean pressure type depth finder comprises a pressure standard device and a calibration device;
The calibrating device comprises an external threaded joint, a filter, a transfer column, a left transfer tube, a platform, a left transfer column, a left channel bypass component, a right transfer column, a middle channel bypass component, a right transfer tube and a pressure transfer piece;
The platform is provided with a middle switching column, a left switching column and a right switching column, the middle switching column and the left switching column are communicated with each other through a left switching tube, and the middle switching column and the right switching column are communicated with each other through a right switching tube; the middle transfer column is communicated with an outlet of the filter, and an inlet of the filter is communicated with the first external threaded connector; the external threaded connector I is used for connecting a pressure outlet of the pressure standard;
the middle switching column, the left switching column and the right switching column are respectively communicated with the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly; the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly comprise one or more internal thread movable joints, and each internal thread movable joint is provided with a detachable plug for sealing the internal thread movable joint; the internal thread movable connectors of the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly are respectively connected with a first connecting pipe with a valve, a second connecting pipe with a valve and a third connecting pipe with a valve, and the first connecting pipe, the second connecting pipe and the third connecting pipe are respectively connected with a middle transfer column, a left transfer column and a right transfer column;
the internal thread movable joints of the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly are connected with the pressure interface of the calibrated instrument through pressure switching pieces.
Further, the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly can adopt a single channel bypass assembly, a double channel bypass assembly or a three channel bypass assembly; the single-channel bypass assembly only comprises a single internal thread movable joint, and the internal thread movable joint of the single-channel bypass assembly is communicated with the first connecting pipe, the second connecting pipe or the third connecting pipe; the two-channel bypass component comprises two internal thread movable joints, the two internal thread movable joints of the two-channel bypass component are respectively communicated with two ports of the tee joint, and one port of the tee joint is communicated with the first connecting pipe, the second connecting pipe or the third connecting pipe; the three-channel bypass assembly comprises three internal thread movable joints, the three internal thread movable joints of the three-channel bypass assembly are respectively communicated with three ports of a four-way joint, and the remaining ports of the four-way joint are communicated with the first connecting pipe, the second connecting pipe or the third connecting pipe.
Further, the pressure standard adopts a piston type pressure gauge of 0.005 level or a digital pressure gauge of 0.01 level and a pressure controller.
Further, the platform has four height-adjustable feet.
Further, the inner thread movable joint is respectively connected with the first connecting pipe, the second connecting pipe and the third connecting pipe through elastic clamping sleeves, the outer diameter is 3.17mm, and the wall thickness is 1mm.
Further, the filter was a pre-particle filter with a filtration particle size of 7 μm, which was resistant to a pressure of 60 MPa.
Further, the transfer post is a four-way structure, and the left transfer post and the right transfer post are both two-way structures.
Further, the left switching tube and the right switching tube are both metal tubes with 60MPa high pressure resistance, outer diameter of 6mm and wall thickness of 2 mm.
Further, the middle connecting column, the left connecting column and the right connecting column are respectively connected with the middle internal thread movable joint, the left internal thread movable joint and the right internal thread movable joint; the first connecting pipe, the second connecting pipe and the third connecting pipe are respectively connected with a first external thread fixed joint, a second external thread fixed joint and a third external thread fixed joint, and the first external thread fixed joint, the second external thread fixed joint and the third external thread fixed joint are respectively connected with the middle internal thread movable joint, the left internal thread movable joint and the right internal thread movable joint in a matched manner, so that the middle transfer column, the left transfer column and the right transfer column are communicated with the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly.
The invention discloses a calibration method of a large and medium ocean pressure type depth finder by utilizing the calibration system, which comprises the following specific processes:
Determining the number of internal thread movable joints of the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly according to the number of calibrated large and medium ocean pressure type sounding instruments, namely calibrated instruments;
And (3) preparing the constant temperature, namely placing the pressure standard device, the calibrated instrument and the calibrating device in a constant temperature chamber with the temperature of (20+/-1) ℃ for more than 4 hours.
Placing the calibrated instrument on a platform and fixing the calibrated instrument; the laser level instrument is used as a horizontal reference auxiliary device, the height of the platform is adjusted to enable the reference positions of the calibrated instrument and the pressure standard instrument to be on the same horizontal line as much as possible, and the influence of the potential difference on the calibration result is reduced.
The data output end of the calibrated instrument is connected to the COM port of the computer through a special data line; the computer obtains the pressure indication value of the calibrated instrument under the current air pressure condition; simultaneously recording the current atmospheric pressure value displayed by a standard barometer in the constant temperature chamber, wherein the current atmospheric pressure value is the standard value of the initial zero point of the pressure;
according to the number of the calibrated instruments, plugging internal thread movable joints corresponding to the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly is opened, and valves corresponding to the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly are opened;
connecting an external threaded connector I of the calibrating device with an internal threaded connector corresponding to a pressure outlet of the pressure standard device to form a multi-channel measuring system; the pressure standard device is pre-pressed in advance, and pressure conduction media are properly discharged from each internal thread movable joint of the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly to be used for expelling bubbles in the calibrating device;
connecting a pressure interface of a calibrated instrument with one end of a pressure adapter, injecting a pressure conduction medium from the other end of the pressure adapter by using an injection needle tube, and expelling bubbles in the pressure conduction medium;
connecting the other end of the pressure adapter connected with the calibrated instrument to the internal thread movable joint corresponding to the middle channel bypass component, the left channel bypass component and the right channel bypass component;
starting normal operation of a pressure increasing stroke and a pressure decreasing stroke by using a pressure standard device, uniformly manufacturing a plurality of standard pressure reference points in the range of the detected instrument, and recording the magnitude of the standard pressure reference points; in the process, the computer continuously records and obtains the pressure indication value of the calibrated instrument;
after the lifting downstroke is finished, the other end of the pressure adapter of the calibrated instrument is disconnected with the corresponding internal thread movable joint;
The computer keeps record and obtains the pressure indication value of the calibrated instrument; at this time, the pressure indication value of the calibration instrument of the tail zero point is recorded;
After the test is finished, closing valves of the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly, and sealing all the internal thread movable joints by using plugs;
later, comparing the pressure indicating value data of the calibrated instrument with a pressure standard value of the pressure standard device after the air pressure correction, thereby obtaining an indicating value error of the calibrated instrument;
And (3) compiling relevant information such as calibration experiment conditions, standard value data, pressure indicating value data, measurement uncertainty of a calibration result and the like into the certificate, and thus forming the calibration certificate.
The invention has the beneficial effects that:
1. The invention adopts an optional multi-channel structure, one or more channels can be started through the cooperation of the valve and the plug, the calibration of one or more calibrated instruments is realized, and for the unnecessary channels, the valve of the corresponding channel is closed and the corresponding internal thread movable joint is plugged by the plug. The method can meet the requirement of variable number of calibrated instruments, solves the problem of long working time of the traditional calibration method, and can greatly improve the calibration efficiency of the pressure sensor of the large and medium ocean pressure type depth gauge.
2. According to the invention, the elastic connecting pipe with the outer diameter of 3.17mm and the wall thickness of 1mm is used as a main pipeline, the superfine pipeline inner diameter can enable the liquid storage quantity of the calibrating device to be extremely small, and the damping phenomenon in the process of lifting and pressing can be reduced. Because the connecting pipe has elasticity, the effective distance between internal thread union is adjustable, and it can satisfy the different demands of distance between the pressure sensor that cause because of the instrument size difference that is calibrated to the difference.
3. Compared with the traditional calibration scheme, the calibration method and the device can be used for calibrating, so that on one hand, the labor consumption can be greatly reduced, and on the other hand, the loss to the standard device can be greatly reduced.
Drawings
FIG. 1 is a schematic diagram of a calibrating device according to an embodiment 1 of the present invention;
FIG. 2 is a schematic view of the left channel bypass assembly 9 of FIG. 1;
fig. 3 is a schematic structural diagram of a pressure adapter in embodiment 1 of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and it should be noted that, while the present embodiment provides a detailed implementation and a specific operation process on the premise of the present technical solution, the protection scope of the present invention is not limited to the present embodiment.
Example 1
The calibration system for the large and medium ocean pressure type depth sounder provided by the embodiment adopts the piston type pressure gauge or the digital pressure gauge as a stable standard pressure source, and can calibrate various large and medium ocean pressure type depth sounders with the same calibration range within 6km range in batches (1-6 ocean pressure type depth sounders can be calibrated simultaneously according to the requirement) by combining a calibration device.
Specifically, the calibration system of the large and medium ocean pressure type depth finder comprises a pressure standard device and a calibration device;
The pressure standard device adopts a 0.005-level piston pressure gauge (such as KY0.6/KY6/KY60 type of Shanghai Ministry Ulmus) or 0.01-level digital pressure gauge and pressure controller (such as ConST A type digital pressure calibrator of Beijing Kang Site Instrument technology Co., ltd.). KY0.6/KY6/KY60 type piston pressure is 0.005 grade, has 3 pistons in total of (0.04-0.6) MPa, (0.1-6) MPa, (1-60) MPa, and can be used for calibrating a large and medium ocean pressure type depth finder with the measuring range below 6km and the absolute value of the maximum allowable error above 0.01 percent FS; the ConST A type digital pressure calibrator is provided with a 0.01-grade digital pressure gauge with three measuring ranges of (0-6) MPa, (0-25) MPa, (0-60) MPa and a pressure controller with pressure control capability of 0.005%FS, and can be used for calibrating a large and medium ocean pressure type depth finder with the measuring range of less than 6km and the absolute value of the maximum allowable error of more than 0.03%FS.
As shown in fig. 1 to 3, the calibration device includes an external screw joint 1, a filter 2, a middle adapter column 3, a left adapter tube (outer diameter 6 mm) 4, a platform 5, a left adapter column 6, a leg 7, a left internal screw joint 8, a left channel bypass assembly 9, a right channel bypass assembly 10, a right internal screw joint 11, a right adapter column 12, a middle channel bypass assembly 13, a middle internal screw joint 14, a right adapter tube (outer diameter 6 mm) 15, and a pressure adapter 16;
The platform is provided with a middle switching column 3, a left switching column 6 and a right switching column 12, the middle switching column 3 and the left switching column 6 are communicated with each other through a left switching tube 4, and the middle switching column 3 and the right switching column 12 are communicated with each other through a right switching tube 15; the transfer column 3 is communicated with the outlet of the filter 2, and the inlet of the filter 2 is communicated with the first external threaded connector 1; the first external threaded connector 1 is used for being connected with a pressure outlet of a pressure standard device;
The middle transfer column 3, the left transfer column 6 and the right transfer column 12 are respectively communicated with the middle channel bypass assembly 13, the left channel bypass assembly 9 and the right channel bypass assembly 10; the middle channel bypass assembly 13, the left channel bypass assembly 9 and the right channel bypass assembly 10 all comprise internal thread movable joints 18, and each internal thread movable joint 18 is provided with a detachable plug for sealing the internal thread movable joint 18; the middle channel bypass assembly 13, the left channel bypass assembly 9 and the right channel bypass assembly 10 are respectively provided with a first connecting pipe 19 with a first valve 17, a second connecting pipe 25 with a second valve 24 and a third connecting pipe 27 with a third valve 26, and the first connecting pipe 19, the second connecting pipe 25 and the third connecting pipe 27 are respectively connected with the middle transfer column 3, the left transfer column 6 and the right transfer column 12.
The center channel bypass assembly 13, the left channel bypass assembly 9, and the right channel bypass assembly 10 are each optionally single channel bypass assemblies, dual channel bypass assemblies, or three channel bypass assemblies. FIG. 1 shows an exemplary diagram of a center channel bypass assembly 13 employing a single pass bypass assembly, a left channel bypass assembly 9 employing a dual channel bypass assembly, and a right channel bypass assembly 10 employing a three channel bypass assembly.
The single-channel bypass assembly only comprises a single internal thread movable joint 18, and the internal thread movable joint 18 of the three-channel bypass assembly is communicated with a first connecting pipe 19, a second connecting pipe 25 or a third connecting pipe 27 (the first connecting pipe 19 is connected in the embodiment);
The two-channel bypass component comprises two internal thread movable joints 18, the two internal thread movable joints 18 of the two-channel bypass component are respectively communicated with two ports of a tee joint 20, and the remaining port of the tee joint 20 is communicated with a first connecting pipe 19, a second connecting pipe 25 or a third connecting pipe 27 (in the embodiment, the second connecting pipe 25 is connected);
The three-channel bypass assembly comprises three internal thread movable joints 18, the three internal thread movable joints 18 of the three-channel bypass assembly are respectively communicated with three ports of one four-way joint 101, and the remaining ports of the four-way joint 101 are communicated with a first connecting pipe 19, a second connecting pipe 25 or a third connecting pipe 27 (the third connecting pipe 27 is connected in the embodiment).
The internal threaded unions 18 of the middle, left and right channel bypass assemblies 13, 9 and 10 are connected to the pressure port of the calibrated instrument by pressure adapter 16.
In this embodiment, the platform 5 has four height-adjustable feet 7.
In this embodiment, the size of the male connector 1 corresponds to m20×1.5. The female union 18 is of size m20×1.5.
In this embodiment, the first connecting pipe 19, the second connecting pipe 25 and the third connecting pipe 27, which are connected by the movable joint 18 with internal threads, are all elastic clamping sleeves (with an outer diameter of 3.17mm and a wall thickness of 1 mm).
In this example, the filter 2 was a pre-particulate filter with a filtration particle size of 7 μm, which was resistant to a pressure of 60 MPa.
In this embodiment, the middle switching post 3 is of a four-way structure, and the left switching post 6 and the right switching post 12 are of a two-way structure.
In this embodiment, the left adapter tube 4 and the right adapter tube 15 are each high-pressure-resistant metal tubes (outer diameter 6mm, wall thickness 2 mm).
In this embodiment, the middle connecting column 3, the left connecting column 6 and the right connecting column 12 are respectively connected with the middle internal thread movable joint 14, the left internal thread movable joint 8 and the right internal thread movable joint 11;
The first connecting pipe 19, the second connecting pipe 25 and the third connecting pipe 27 are respectively connected with a first external thread fixed joint 21, a second external thread fixed joint 22 and a third external thread fixed joint 23, and the first external thread fixed joint 21, the second external thread fixed joint 22 and the third external thread fixed joint 23 are respectively connected with the middle internal thread movable joint 14, the left internal thread movable joint 8 and the right internal thread movable joint 11 in a matched manner, so that the communication between the middle connecting column 3, the left connecting column 6 and the right connecting column 12 and the middle channel bypass assembly 13, the left channel bypass assembly 9 and the right channel bypass assembly 10 is realized.
Specifically, the middle internal thread movable joint 14, the left internal thread movable joint 8 and the right internal thread movable joint 11 are the same, and are all m20×1.5 internal thread movable joints. The sizes of the first external thread fixed joint 21, the second external thread fixed joint 22 and the third external thread fixed joint 23 are corresponding to M20×1.5.
It should be noted that, in this embodiment, the first valve 17, the second valve 24, and the third valve 26 are disposed at the lower ends of the first connecting pipe 19, the second connecting pipe 25, and the third connecting pipe 27, and are close to the middle female movable joint 14, the left female movable joint 8, and the right female movable joint 11, so that the structure of each bypass pipeline is stronger, and shaking caused by too thin connecting pipes is avoided.
Example 2
The embodiment provides a calibration method for a large and medium ocean pressure type depth finder by using the calibration system described in the embodiment 1, which specifically comprises the following steps:
According to the number of calibrated large and medium ocean pressure type sounding instruments, namely calibrated instruments, the calibrating device is prepared: if the number of the calibrated instruments is less than or equal to 9, one calibrating device can be independently used, and if the number of the calibrated instruments is more than 9, a plurality of calibrating devices are connected in series for use. Depending on the specific number of instruments being calibrated, it is determined whether the center-channel bypass assembly 13, the left-channel bypass assembly 9, and the right-channel bypass assembly 10 employ a single-channel bypass assembly, a dual-channel bypass assembly, or a three-channel bypass assembly. In this embodiment, the middle channel bypass assembly 13 adopts a single-channel bypass assembly, the left channel bypass assembly 9 adopts a dual-channel bypass assembly, and the right channel bypass assembly 10 adopts a three-channel bypass assembly as an example for illustration.
And (3) preparing the constant temperature, namely placing the pressure standard device, the calibrated instrument and the calibrating device in a constant temperature chamber with the temperature of (20+/-1) ℃ for more than 4 hours.
Placing the calibrated instrument on a platform and fixing the calibrated instrument; the laser level instrument is used as a horizontal reference auxiliary device, the height of the platform is adjusted to enable the reference positions of the calibrated instrument and the pressure standard instrument to be on the same horizontal line as much as possible, and the influence of the potential difference on the calibration result is reduced.
The data output end of the calibrated instrument is connected to the COM port of the computer through a special data line; the computer obtains information about the pressure indication, the original value (if available), the coefficient (if available) and the like of the calibrated instrument under the current air pressure condition. The current atmospheric pressure value displayed by a standard barometer in the constant temperature chamber is recorded at the same time, and is the standard value (or called reference value) of the initial zero point of the pressure.
According to the number of instruments to be calibrated, the plugs of the corresponding numbers of the internal threaded unions 18 of the middle channel bypass assembly 13, the left channel bypass assembly 9 and the right channel bypass assembly 10 are opened, and the corresponding valves 17, 24 and 26 of the middle channel bypass assembly 13, the left channel bypass assembly 9 and the right channel bypass assembly 10 are opened.
Connecting an external threaded connector I of the calibrating device with an internal threaded connector corresponding to a pressure outlet of the pressure standard device to form a multi-channel measuring system; and properly discharging pressure conduction media from each internal thread movable joint of the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly through pre-pressing in advance on the pressure standard device, and expelling bubbles in the calibrating device.
The pressure port of the calibrated instrument is connected to one end 162 of the pressure adaptor, and sebacate (pressure-conducting medium) is injected from the other end 161 of the pressure adaptor using an injection needle tube, expelling air bubbles therein.
The other end 161 of the pressure adapter to which the calibrated instrument is attached is connected to the internally threaded union 18 corresponding to the middle, left and right channel bypass assemblies 13, 9 and 10.
And starting normal operation of the pressure increasing stroke and the pressure decreasing stroke by using a pressure standard device, uniformly manufacturing a plurality of standard pressure reference points in the range of the detected instrument, and recording the magnitude of the standard pressure reference points. In the process, the computer continuously records and obtains relevant data such as pressure indication values of the calibrated instrument.
After the lifting down stroke is completed, the other end 161 of the pressure adapter to the calibrated instrument is disconnected from the corresponding female union 18.
The computer keeps record and obtains relevant data such as pressure indication value of the calibrated instrument. At this point, an indication of the pressure of the instrument at the end zero point is recorded.
After the test is completed, the valves of the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly are closed, and the internal thread movable joints 18 are closed by using plugs.
And finally, comparing the pressure indicating value data of the calibrated instrument with a pressure standard value of the pressure standard device after the air pressure correction, thereby obtaining the indicating value error of the calibrated instrument. If the calibrated instrument opens a calibration formula, pressure original value data, pressure temperature compensation data and the like, the calibrated instrument can be corrected to generate a new calibration coefficient.
And (3) compiling relevant information such as calibration experiment conditions, standard value data, pressure indicating value data, measurement uncertainty of a calibration result and the like into the certificate, and thus forming the calibration certificate.
Various modifications and variations of the present invention will be apparent to those skilled in the art in light of the foregoing teachings and are intended to be included within the scope of the following claims.
Claims (9)
1. The calibration system of the large and medium ocean pressure type depth finder is characterized by comprising a pressure standard device and a calibration device;
The calibrating device comprises an external threaded joint, a filter, a transfer column, a left transfer tube, a platform, a left transfer column, a left channel bypass component, a right transfer column, a middle channel bypass component, a right transfer tube and a pressure transfer piece;
The platform is provided with a middle switching column, a left switching column and a right switching column, the middle switching column and the left switching column are communicated with each other through a left switching tube, and the middle switching column and the right switching column are communicated with each other through a right switching tube; the middle transfer column is communicated with an outlet of the filter, and an inlet of the filter is communicated with the first external threaded connector; the external threaded connector I is used for connecting a pressure outlet of the pressure standard;
the middle switching column, the left switching column and the right switching column are respectively communicated with the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly; the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly comprise one or more internal thread movable joints, and each internal thread movable joint is provided with a detachable plug for sealing the internal thread movable joint; the internal thread movable connectors of the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly are respectively connected with a first connecting pipe with a valve, a second connecting pipe with a valve and a third connecting pipe with a valve, and the first connecting pipe, the second connecting pipe and the third connecting pipe are respectively connected with a middle transfer column, a left transfer column and a right transfer column;
The internal thread movable joints of the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly are connected with a pressure interface of the calibrated instrument through pressure adapters; the middle channel bypass component, the left channel bypass component and the right channel bypass component can adopt a single channel bypass component, a double channel bypass component or a three channel bypass component; the platform has four height-adjustable feet.
2. The calibration system of claim 1, wherein the single-channel bypass assembly comprises only a single internally threaded union, the internally threaded union of the single-channel bypass assembly being in communication with either connection tube one, connection tube two or connection tube three; the two-channel bypass component comprises two internal thread movable joints, the two internal thread movable joints of the two-channel bypass component are respectively communicated with two ports of the tee joint, and one port of the tee joint is communicated with the first connecting pipe, the second connecting pipe or the third connecting pipe; the three-channel bypass assembly comprises three internal thread movable joints, the three internal thread movable joints of the three-channel bypass assembly are respectively communicated with three ports of a four-way joint, and the remaining ports of the four-way joint are communicated with the first connecting pipe, the second connecting pipe or the third connecting pipe.
3. The calibration system of claim 1, wherein the pressure gauge is a piston gauge of grade 0.005 or a digital gauge and pressure controller of grade 0.01.
4. The calibration system of claim 1, wherein the internal thread union is in elastic snap fit with an outer diameter of 3.17mm and a wall thickness of 1mm for the first, second, and third connecting pipes.
5. The calibration system of claim 1, wherein the filter is a pre-particle filter with a filter particle size of 7 μm that is resistant to 60MPa pressure.
6. The calibration system of claim 1, wherein the transfer posts are of a four-way configuration and the left and right transfer posts are of a two-way configuration.
7. The calibration system of claim 1, wherein the left adapter tube and the right adapter tube are each metal tubes with a wall thickness of 2mm and an outer diameter of 6mm and a high pressure resistance of 60 MPa.
8. The calibration system of claim 1, wherein the middle adapter column, the left adapter column, and the right adapter column are connected with a middle female union, a left female union, and a right female union, respectively; the first connecting pipe, the second connecting pipe and the third connecting pipe are respectively connected with a first external thread fixed joint, a second external thread fixed joint and a third external thread fixed joint, and the first external thread fixed joint, the second external thread fixed joint and the third external thread fixed joint are respectively connected with the middle internal thread movable joint, the left internal thread movable joint and the right internal thread movable joint in a matched manner, so that the middle transfer column, the left transfer column and the right transfer column are communicated with the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly.
9. A method for calibrating a large and medium ocean pressure depth finder by using the calibration system of any one of claims 1 to 8, which is characterized by comprising the following specific steps:
Determining the number of internal thread movable joints of the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly according to the number of calibrated large and medium ocean pressure type sounding instruments, namely calibrated instruments;
The constant temperature preparation, namely placing a pressure standard device, a calibrated instrument and a calibration device in a constant temperature chamber with the temperature of (20+/-1) ℃ for more than 4 hours;
Placing the calibrated instrument on a platform and fixing the calibrated instrument; the laser level gauge is used as a horizontal reference auxiliary device, the height of the platform is adjusted to enable the reference positions of the calibrated instrument and the pressure standard to be on the same horizontal line as much as possible, and the influence of the potential difference on the calibration result is reduced;
The data output end of the calibrated instrument is connected to the COM port of the computer through a special data line; the computer obtains the pressure indication value of the calibrated instrument under the current air pressure condition; simultaneously recording the current atmospheric pressure value displayed by a standard barometer in the constant temperature chamber, wherein the current atmospheric pressure value is the standard value of the initial zero point of the pressure;
according to the number of the calibrated instruments, plugging internal thread movable joints corresponding to the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly is opened, and valves corresponding to the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly are opened;
connecting an external threaded connector I of the calibrating device with an internal threaded connector corresponding to a pressure outlet of the pressure standard device to form a multi-channel measuring system; the pressure standard device is pre-pressed in advance, and pressure conduction media are properly discharged from each internal thread movable joint of the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly to be used for expelling bubbles in the calibrating device;
connecting a pressure interface of a calibrated instrument with one end of a pressure adapter, injecting a pressure conduction medium from the other end of the pressure adapter by using an injection needle tube, and expelling bubbles in the pressure conduction medium;
connecting the other end of the pressure adapter connected with the calibrated instrument to the internal thread movable joint corresponding to the middle channel bypass component, the left channel bypass component and the right channel bypass component;
Starting normal operation of a pressure increasing stroke and a pressure decreasing stroke by using a pressure standard device, uniformly manufacturing a plurality of standard pressure reference points in the range of a calibrated instrument, and recording the magnitude of the standard pressure reference points; in the process, the computer continuously records and obtains the pressure indication value of the calibrated instrument;
after the lifting downstroke is finished, the other end of the pressure adapter of the calibrated instrument is disconnected with the corresponding internal thread movable joint;
the computer keeps record and obtains the pressure indication value of the calibrated instrument; at this time, the pressure indication value of the calibrated instrument at the end zero point is recorded;
After the test is finished, closing valves of the middle channel bypass assembly, the left channel bypass assembly and the right channel bypass assembly, and sealing all the internal thread movable joints by using plugs;
later, comparing the pressure indicating value data of the calibrated instrument with a pressure standard value of the pressure standard device after the air pressure correction, thereby obtaining an indicating value error of the calibrated instrument;
And (3) compiling the relevant information of the measurement uncertainty of the calibration experimental conditions, the standard value data, the pressure indicating value data and the calibration result into a certificate, and thus forming the calibration certificate.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587187A (en) * | 2008-05-23 | 2009-11-25 | 中国科学院声学研究所 | Method for correcting deviation of depth measuring sonar system |
| CN109405866A (en) * | 2018-09-19 | 2019-03-01 | 国家海洋技术中心 | The testing calibration method and device of thermohaline depth measuring instrument based on multiple spot thermostatic water bath |
| CN110285837A (en) * | 2019-07-22 | 2019-09-27 | 湖南省计量检测研究院 | Differential hydrostatic level calibrating installation and calibration method |
| CN211425427U (en) * | 2020-03-11 | 2020-09-04 | 青岛罗博飞海洋探测装备应用技术研究院有限公司 | Seawater depth sensor |
| CN216815992U (en) * | 2022-03-24 | 2022-06-24 | 烟台市标准计量检验检测中心(国家蒸汽流量计量烟台检定站、烟台市质量技术监督评估鉴定所) | Filter integrality tester calibrating device |
| CN218411217U (en) * | 2022-10-31 | 2023-01-31 | 国家海洋标准计量中心 | Large and medium-sized ocean pressure type depth sounder calibration system |
| CN116182896A (en) * | 2022-10-31 | 2023-05-30 | 国家海洋标准计量中心 | Calibration system and calibration method for miniature ocean pressure type depth finder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6848292B2 (en) * | 2002-03-25 | 2005-02-01 | Council Of Scientific And Industrial Research | System for calibration of pressure transducers |
-
2022
- 2022-10-31 CN CN202211343907.9A patent/CN115979297B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587187A (en) * | 2008-05-23 | 2009-11-25 | 中国科学院声学研究所 | Method for correcting deviation of depth measuring sonar system |
| CN109405866A (en) * | 2018-09-19 | 2019-03-01 | 国家海洋技术中心 | The testing calibration method and device of thermohaline depth measuring instrument based on multiple spot thermostatic water bath |
| CN110285837A (en) * | 2019-07-22 | 2019-09-27 | 湖南省计量检测研究院 | Differential hydrostatic level calibrating installation and calibration method |
| CN211425427U (en) * | 2020-03-11 | 2020-09-04 | 青岛罗博飞海洋探测装备应用技术研究院有限公司 | Seawater depth sensor |
| CN216815992U (en) * | 2022-03-24 | 2022-06-24 | 烟台市标准计量检验检测中心(国家蒸汽流量计量烟台检定站、烟台市质量技术监督评估鉴定所) | Filter integrality tester calibrating device |
| CN218411217U (en) * | 2022-10-31 | 2023-01-31 | 国家海洋标准计量中心 | Large and medium-sized ocean pressure type depth sounder calibration system |
| CN116182896A (en) * | 2022-10-31 | 2023-05-30 | 国家海洋标准计量中心 | Calibration system and calibration method for miniature ocean pressure type depth finder |
Non-Patent Citations (1)
| Title |
|---|
| 索利利等.海洋压力测量仪器的校准方法及结果评定.海洋技术.2009,第28卷(第3期),130-133. * |
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