JP2021116064A - Liquified product automated shipping system - Google Patents

Abstract

To provide a liquified product automated shipping system capable of improving business efficiency in liquified product shipping business and enhancing reliability by automatization.SOLUTION: A liquified product automated shipping system 1 comprises: a vehicle assignment management device 2 for administering a loading schedule of a tank lorry; a shipping management device 31 connectable with the vehicle assignment management device via a network; a first data read-out device connectable with the shipping management device via a network; first output means connectable with the shipping management device via a network; a truck scale 47 connectable with the vehicle assignment management device via a network and measuring a weight of the tank lorry; a second data read-out device installed corresponding to each of liquified products; second output means connectable with the shipping management device via a network; an automated analyzing device 7 into which a liquid product to be loaded is automatically introduced and which executes an analysis; and a dispersion control device 8 that controls the automated analyzing device 7.SELECTED DRAWING: Figure 1A

Description

The present invention relates to, for example, an automatic shipping system for liquefied products manufactured by an air separation device.

A liquefied product manufacturing plant equipped with an air separation device produces liquefied oxygen, liquefied nitrogen, liquefied argon, and liquefied carbon, and fills a mobile low-temperature liquefied storage tank (hereinafter referred to as "tank lorry" or simply "lorry"). It is being shipped.

An example of the conventional shipping flow is shown below.
(S1) When the tank lorry enters the factory, it is placed on a truck scale and its weight is weighed.
(S2) The lorry crew gets off the lorry, holds the weighing card over the card reader in the weighing room, and collates it with the shipping verification system. The shipping verification system stores the shipping schedule as data in advance by contact from the shipping company.
(S3) The shipping verification system determines whether or not there is a shipping schedule. If it was not scheduled to be shipped, he would call the shipping company.
(S4) If there is a shipping schedule, hold the weighing card over the card reader of the measuring instrument to complete the weighing of the lorry.
(S5) Move the lorry to the filling place for the liquefied product. The crew turns on the automatic start button of the pump. This allows the pump to be started.
(S6) The lorry filling hose is connected to a predetermined supply port, and the inside of the hose is cleaned.
(S7-1) After cleaning the inside of the hose, filling of the liquefied product is started (the loading valve is opened and the purge valve is closed).
(S7-2) In parallel with the start of filling, the analysis pipe is connected to a predetermined position on the lorry, and the automatic analysis button on the analysis panel is turned on to start the automatic analysis. If the analysis result passes, the analysis is completed and the analysis pipe is removed.
(S8) When the loading of the liquefied product is completed, the loading valve is closed. Blow the liquid inside the hose and remove the loading hose.
(S9) Turn off the pump stop button.
(S10) Move the lorry to the track scale.
(S11) Hold the weighing card over the card reader of the measuring instrument to complete the weighing.
(S12) Collate with the shipping verification system in the weighing room (hold the weighing card over the card reader).
(S13) Move the lorry to the waiting place.
(S14) The crew goes to a predetermined place (control room) for the analysis table which is the analysis result of (S7-2).
(S15) The crew returns to Raleigh and leaves the factory.

The analysis of (S7-2) and (S14) above will be shown more specifically.
(7-2-1) The crew connects the analysis piping and calls the control room.
(7-2-2) The operator switches the analysis line.
(7-2-3) after a predetermined time has elapsed, the operator reads the measured value _{(O 2,} dew point), fill in the result register. The analysis is also performed manually by gas chromatography.
(7-2-4) Notify the crew of the end of the analysis.
(7-2-5) Based on the data entered in the ledger, the analysis table is issued using the analysis table issuing system on the personal computer.
(7-2-6) The issuer and superior confirm and seal the contents.
(7-2-7) The crew goes to the control room to get the analysis table.

In Patent Document 1, in the tank lorry shipping management system, the shipping-related information input to the IC tag possessed by the driver of the tank lorry and the information held by the computer installed in the facility for loading chemicals into the tank lorry are cross-checked. Discloses a method for preventing erroneous operation and the like. In the IC tag possessed by the driver, the crew manually inputs the shipping-related information while referring to the data of the host computer for each shipment.

Patent Document 2 is a chemical product loading information system for shipping chemical products, which collates whether or not driver information is included in the loading schedule, displays the collation result, and loads the driver information in the collation result. It is stated that if it is included in the loading schedule, it requests loading approval and decides whether to approve this approval request based on the loading approval rule.

Japanese Unexamined Patent Publication No. 2004-511139 JP-A-2018-58691

In the above-mentioned conventional shipping business, lorry matching, weighing, and analysis are performed by independent systems. In lorry verification, personnel in the vehicle dispatch department enter order information based on orders from customers and request the factory by paper media such as fax. At the factory, the order information received is used as a reference to collate with the lorries that come to the venue. When the lorry crew arrives at the venue, they inform the factory of the lorry number, consignee, and other schedules on the premises telephone, and obtain permission for filling. If there was a discrepancy with the order information, it was necessary to contact by phone and make corrections on both sides.
Factory personnel perform lorry analysis according to the order. The analysis work also required a lot of work such as switching gas routes, copying analysis charts, and creating analysis reports.
In addition, a special analysis (gas chromatography) required a lot of time, and in that case, both the factory staff and the crew were wasting a considerable waiting time to complete.
As mentioned above, it was possible to register the lorry information (container expiration date, maximum load capacity, affiliated company, product type, etc.) to the measuring instrument, but it was complicated.
In addition, it is difficult for the automatic analyzer to determine the stabilization of the measured value, and the gas chromatography measurement is not automatically executed.

Further, Patent Documents 1 and 2 do not refer to efficient automation of shipping flow, efficient automation of analysis, and improvement of reliability of analysis.

An object of the present invention is to provide an automatic liquefied product shipping system capable of improving work efficiency in liquefied product shipping business and improving reliability by automation.
Further, the present invention provides an automatic liquefied product analysis system including an automatic analyzer that automatically analyzes the liquefied product to be filled.

The liquefied product automatic shipping system of the present invention
A vehicle allocation management device for managing the loading schedule of tank trucks,
A shipping management device installed in the first area (for example, a control room) and connectable to the vehicle allocation management device via a network.
With a first data reading device (for example, a card reader, a tablet, etc.) installed in the first area or a second area different from the first area (for example, a weighing room) and connectable to the shipping management device via a network. ,
A first output means (for example, a printer, a display device, a speaker capable of outputting audio) which is installed in the same area as the first data reading device and can be connected to the shipping management device via a network.
A truck scale that can be connected to the vehicle allocation management device via a network and measures the weight of the tank truck,
A second data reader (for example, a card reader, a touch panel, etc.) installed in a third area (for example, a filling place for liquefied products) different from the first and second areas and installed corresponding to each liquefied product.
A second output means (for example, a speaker, a display device) installed in the third area and connectable to the shipping management device via a network,
An automatic analyzer that automatically introduces the liquid product to be filled and performs analysis,
A distributed control device that controls the automatic analyzer and
To be equipped.

The above automatic shipping system
A loading schedule storage unit that stores loading schedule data,
It may also include a shipping forecast / actual storage unit that stores data on shipping schedules and actual results.

The shipping management device may include an entrance collation unit that collates the data (ID, schedule information) read by the first data reading device with the loading schedule.
Even if the shipping management device is provided with a filling collation unit that verifies the data (ID) read by the second data reader and whether or not the admission clock has been completed and whether or not the gas type of the filling station is appropriate. good.
The shipping control device may include a weight determination unit that determines whether or not the measured weight after filling is overloaded.

The automatic analyzer
The first introduction route of various analytical sample gases derived from the tank truck,
The second introduction route of various product tank gas derived from various product tanks,
A piping route in which the first introduction route and the second introduction route are connected via a route switching means (for example, a four-way switching valve, a three-way switching valve, a two-way switching valve, etc.)
Various analyzers (nitrogen analyzer, oxygen analyzer, dew point meter, gas chromatography) connected to the piping path,
It is provided with the route switching means and / or an exhaust path connected to the piping path for sending various analytical sample gases and / or various product tank gases to the exhaust pipe.
Examples of various analytical sample gases and various product tank gases include a plurality of types of nitrogen, a plurality of types of oxygen, and argon.
In the first and second introduction paths and the piping path, pressure adjusting means (for example, a pressure reducing valve, a pressure gauge, a needle valve, etc.) for adjusting the pressure of various analytical samples or various product tank gases and their flow rates are adjusted. A flow rate adjusting means (mass flow meter, flow meter with needle, etc.) and a pump may be provided.
Further piping paths into which zero gas, comparative gas, and purge gas are introduced may be provided for analysis of various analyzers and cleaning of piping paths.
Route switching means for switching piping routes (for example, four-way switching) to send product sample gas to various analyzers, to send product sample gas to exhaust paths, and / or to send zero gas, comparative gas, and purge gas to exhaust paths. A valve, a three-way switching valve, a two-way switching valve, etc.) may be further provided.
The drive system of the route switching means may be, for example, air drive.
The above automatic analyzer
Further, it may have a sensor for detecting whether or not the switching of the route switching means has been performed normally. For example, a sensor that detects whether or not the valve switching is normal may be installed in the valve. The sensor may be composed of, for example, a proximity sensor for detecting the movement of the valve and the position of the valve, a capacitance sensor, an optical sensor, and the like.

Distributed control system
A route switching control unit that issues a command to the route switching means for switching between the first introduction route and the second introduction route and controls the switching of the route.
A stability judgment unit that determines the stability of measured values,
After the stability judgment unit determines that the product is stable, a comparison unit that compares the measured value with the standard value,
A repeat control unit that controls the operation of various analyzers so that analysis by various analyzers is repeatedly executed when the comparison result of the comparison unit does not satisfy the standard value.
It may have a data storage unit that stores various measurement data in association with the measurement time.

The route switching control unit
At least, it may have a switching normality determination unit that determines whether or not the route switching is normal based on the sensor detection signal detected by the sensor provided in the route switching means. The sensor detection signal may be sent from the sensor to the flow rate adjusting means (or pressure adjusting means) and / or the path switching control unit (or switching normality determination unit).
The switching normality determination unit is a measured flow rate (or pressure adjusting means) measured by a flow rate adjusting means for adjusting the flow rates of various analytical sample gases and various product tank gases provided in the path from the path switching means to the various analyzers. It may be determined whether or not the route switching is normal based on the measured pressure measured in 1) and the sensor detection signal.
In the switching normal determination unit, the sensor detection signal is normal (for example, there is a detection signal), and the flow rate (measured pressure) measured from the flow rate adjusting means (pressure adjusting means) is in the normal range (measured value is normal). If it is within the range), it may be determined that the switching is normal, and if it is not, it may be determined that the switching is not normal and output as an analysis abnormality. The switching normality determination unit ignores the measured flow rate (or measurement pressure) during the period from when the reception of the sensor detection signal or the route switching is determined to be normal until a predetermined time elapses, and after the predetermined time elapses. The judgment may be made based on the measured flow rate (measured pressure).

The stability determination unit
The first sub-judgment unit that determines whether or not an arbitrary measured value is within the standard value range (which is the criterion for determining whether or not the product has passed the shipment),
All of one or more measured values for each predetermined time (measured i + n from the i-measured value) are within the standard value range, and the measured value within each predetermined period is the first measurement within the predetermined period. It may have a second sub-determination unit for determining whether or not it is within the range of the upper limit value and the lower limit value based on the value (measured value i).
The second sub-judgment unit
All of the measured values (first, ..., xth measured value) within the first predetermined time (first time of the predetermined time) from the measured value within the standard value range (referred to as the first measured value) It is determined whether or not it is within the range of the standard value and within the range of the upper limit value and the lower limit value based on the measured value (first measured value).
All of the measured values (the x + 1 ..., the x + y measured values) within the next second predetermined time (the second time of the predetermined time) are within the standard values and the measured values (the x + 1 measured values). ) Is within the range of the upper and lower limits, and it is determined whether or not it is within the range.
All of the measured values (third x + y + 1, ... th x + y + z measured values) within the next third predetermined time (third time of the predetermined time) are within the standard values and the measured values (third x + y + 1 measured values). It may be determined whether or not it is within the range of the upper limit value and the lower limit value based on. The number of determinations is not limited to three, and may be the fourth, fifth, more, or one or two times in a predetermined time. The predetermined time is not particularly limited, but may be set in consideration of the analysis time, the analysis waiting time, and the like.
In the determination of the second sub-determination unit, the stability determination unit determines that all of the measured values at one or more predetermined time intervals are within the standard value range, and the measured values within each predetermined period are the predetermined values. If it is within the range of the upper limit value and the lower limit value based on the first measured value (i measurement value) in the period, it is judged that the measured value is stable, and if not, it is judged that it is not stable. You may.

Further, as another embodiment, the second sub-determination unit is
All of the measured values (first, ..., nth measured value) within a predetermined time of 1 or more from the measured value within the standard value range (referred to as the first measured value) are within the standard value range. And, each measured value (i-th measured value) to be judged within the predetermined time is within the range of the upper limit value and the lower limit value based on the immediately preceding (i-1) measured value). It may be determined whether or not it is.
The stability determination unit is determined by the second sub-determination unit, and is a measurement value (first, ...) Within a predetermined time of 1 or more from the measurement value (referred to as the first measurement value) within the range of the standard value. , Nth measurement value) is within the standard value range, and each measurement value (ith measurement value) to be judged within the predetermined time is the immediately preceding (i-1) measurement. If it is within the range of the upper limit value and the lower limit value based on the value), it may be determined that the measured value is stable, and if not, it may be determined that the measured value is not stable.

The upper limit value and the lower limit value are set in advance according to the type of analysis sample gas and analyzer, and can be arbitrarily input.

The distributed control device further
A second route switching control unit that issues a command to the route switching means for switching the piping route for introducing zero gas, comparative gas, and purge gas, and controls the switching of the route.
An introduction time control unit that automatically controls the time when each of the zero gas, the comparison gas, and the purge gas is introduced into the various analyzers (including, for example, switching control of the second path switching control unit).
A calibration control unit that controls various analyzers so as to automatically calibrate the various analyzers.
May be provided.

The liquefied product automatic shipping system may be connected to a cloud server or database via a network, and all various actual data such as warehousing / delivery and analysis may be stored.
The liquefied product automatic shipping system and the cloud server or database may be capable of exchanging and transmitting data in real time.

In the present invention, the "loading schedule" is, for example, one or more of the unique ID of the tag, the ID of the transport vehicle, the vehicle number, the name of the chemical product to be transported, the data related to the analysis table of the chemical product, and at least one or more of the loading schedule on the day of transportation. Has the data of.

In the present invention, the "driver information" has, for example, at least one of a unique tag ID, a transport vehicle ID, and a vehicle number.
The liquefied product automatic shipping system may be connectable to a transport vehicle management server that manages a tank lorry for loading liquefied products via a network. The transport vehicle management server may store the loading schedule.

In the present invention, examples of the "card" include an IC tag, an RFID tag, a two-dimensional code, and a QR code (registered trademark).

According to the present invention, it is possible to improve work efficiency in liquefied product shipping work and improve reliability by automation. In addition, it is possible to automatically analyze the liquefied product to be filled. Raleigh crew can proceed with each process without the intervention of factory staff.

The liquefied product automatic analysis system of another invention is shown.
An automatic analyzer that automatically introduces the liquid product to be filled and performs analysis,
A liquefied product automatic analysis system including a control device for controlling the automatic analyzer.
The automatic analyzer
The first introduction route of various analytical sample gases derived from the tank truck,
The second introduction route of various product tank gas derived from various product tanks,
A piping route in which the first introduction route and the second introduction route are connected via a route switching means, and
Various analyzers connected to the piping path,
It is provided with the route switching means and / or an exhaust path connected to the piping path and for sending various analytical sample gases and / or various product tank gases to the exhaust pipe.
The control device is
A route switching control unit that issues a command to the route switching means for switching between the first introduction route and the second introduction route and controls the switching of the route.
A stability judgment unit that determines the stability of measured values,
After the stability judgment unit determines that the product is stable, a comparison unit that compares the measured value with the standard value,
A repeat control unit that controls the operation of various analyzers so that analysis by various analyzers is repeatedly executed when the comparison result of the comparison unit does not satisfy the standard value.
It has a data storage unit that stores various measurement data in association with the measurement time.
The automatic analyzer and the control device have the same configurations as the functions of the automatic analyzer and the distributed control device of the liquefied product automatic shipping system.

The system block diagram which concerns on embodiment of this invention. The figure which shows an example of the functional element of a shipping management apparatus. The figure which shows an example of the functional element of a distributed control device. The figure which shows an example of the operation flow of embodiment of this invention. The figure which shows an example of the flow of automatic analysis. The figure explaining an example of the stability judgment of analysis. The figure which shows an example of the structure of an automatic analyzer. The figure which shows an example of the route corresponding to the analysis sample. The figure which shows an example of the route corresponding to the analysis sample. The figure which shows an example of the route corresponding to the analysis sample.

Some embodiments of the present invention will be described below. The embodiments described below describe an example of the present invention. The present invention is not limited to the following embodiments, and includes various modifications implemented without changing the gist of the present invention. It should be noted that not all of the configurations described below are essential configurations of the present invention.

(System configuration)
1A, 1B, and 1C are system configuration diagrams according to an embodiment of the present invention. FIG. 2 is an example of the operation flow. This will be described below with reference to the drawings.

The liquefied product automatic shipping system 1 according to the present embodiment includes a vehicle allocation management device 2, a shipping management device 31, a tablet 41, a card reader 42, a printer 43, a speaker 44, a display device 45, an automatic analyzer 7, and a distribution control device 8. Have.

The vehicle allocation management device 2 has a loading schedule storage unit 21 that stores the loading schedule. The tablet 41 has a local memory, a schedule matching unit, a terminal communication unit, and a card reader.

The shipping management device 31 is installed in the control room 3 and is connected to the vehicle allocation management device 2 via a network.
The shipping management device 31 shown in FIG. 1B includes a shipping forecast / actual storage unit 310 that stores data on shipping schedules and actual results, data (ID, loading schedule information) read by the card reader 42, and a loading schedule. The entrance collation unit 311, the card readers 51, 52, 53, the read data (ID), and the filling collation that verifies whether the admission clock amount has been completed and whether the gas type of the filling place is appropriate. It has a unit 312 and a weight determination unit 313 for determining whether or not the measured weight after filling is overloaded and / or overfilled.

The card reader 42, the printer 43, the speaker 44, and the display device 45 are installed in the control room 3 or the measuring room 4 different from the control room 3. The card reader 42, the printer 43, the speaker 44, and the display device 45 are each connected to the shipping management device 31 via a network.

The truck scale 47 measures the weight of the tank truck. The weight measured by the truck scale 47 is sent to the vehicle allocation management device 31, is associated with the ID, and is stored in the shipping forecast / actual storage unit 310 or the temporary memory.

The card readers 51, 52, 53 and the speakers 61, 62, 63 are arranged in the filling area. The card reader 51 and the speaker 61 are linked to liquefied oxygen. The card reader 52 and the speaker 62 are tied to liquefied nitrogen. The card reader 53 and the speaker 63 are tied to liquefied argon.

In the automatic analyzer 7, various analysis sample gases derived from the tank lorry and various product tank gases derived from various tanks are introduced via a predetermined piping path and are automatically analyzed. The automatic analyzer 7 is controlled by the distributed control device 8. Details of the automatic analyzer 7 and the distributed control device 8 will be described later.

(Operation flow)
Next, the operation flow will be described with reference to FIG. The loading schedule created in advance is stored in the loading schedule storage unit 21, and is also stored in the shipping forecast / actual storage unit 310. The card may store driver information and a loading schedule in its memory.
As driver information, vehicle number, loading chemical name, loading amount (loading capacity) information, shipping company name, shipping company identification number and other shipping company information, other vehicle information, shipping company name / address Etc. may be recorded.
The loading schedule is a list of vehicle information scheduled to visit the plant for loading chemicals and the arrival schedule of the vehicle. Vehicle information is information about a transportation company such as a vehicle number, a transportation company name, and a transportation company identification number. The visit schedule includes vehicle number, loading time, loaded chemical name, loading amount, information on analysis table, company name and address of the destination, etc.

(Step S1)
The tank truck enters and the crew touches the card on the tablet 41. The ID of the card and the loading schedule are collated, and the approval flow for admission and filling permission is performed.

(Step S2)
Separately from step S1, the card is held over the card reader 42, and the entrance verification unit 311 collates the loading schedule. It should be noted that steps S1 and S2 may be configured in which either one may be performed.

(Step S3)
If the collation results in step S2 match, the tank lorry is moved to the track scale 47. The truck scale 47 measures the weight of the tank truck before filling. The measured data is sent to the shipping management device 31 and stored in the shipping forecast / actual storage unit 310 as the weight before filling.
Next, the shipping management device 31 gives a command to the speaker 44 and the display device 45 after the measurement is completed, and the speaker 44 and the display device 45 make a voice and display indicating that the measurement is completed.
The crew moves the lorry to a liquefied product filling station.

(Step S4)
Move the tank truck to the filling station. The filling site is equipped with liquefied product tanks (O ₂ , N ₂ , Ar, etc.), connecting pipes, hose supply ports, filling operation panels, and the like.
The filling operation panel is provided with card readers 51, 52, 53, an analysis start button (not shown), a stop button (not shown), speakers 61, 62, 63, a display device (not shown), and the like.
Connect the filling hose. The crew then holds the card over a card reader (corresponding to each liquefied product) according to the loading schedule. The data read by the card reader is sent to the shipping management device 31.
The filling collation unit 313 of the shipping management device 31 verifies from the read data (ID) whether or not the admission clock amount has been completed and whether or not the gas type of the filling site is appropriate. If the collation result is correct, a voice message (and display) is given to the effect that the speaker (and display device) starts filling.

(Step S5)
According to the voice message, the crew initiates the filling operation. Before the start of filling, the inside of the hose is cleaned and preparation for filling is performed, and filling is started.

(Step S6)
After the start of filling, the automatic analysis operation is started. Make a voice message (or display) that the speaker (or display device) will start the analysis ("Connect the analysis pipe and let the gas flow."). The crew connects the analysis piping. The speaker gives the message "Press Start Analysis". The crew presses the analysis start button. The analysis is started. Details of the automatic analysis will be described later. The analysis pipe and the first introduction route are connected.

(Step S7)
When the filling and analysis are completed, the speaker (or display device) gives a message (or display) to the effect of completion and weighs the weight after filling.
The crew moves the tank truck to the truck scale 47.
Hold the card over the card reader and weigh it on the track scale 47. The measurement data is sent to the shipping management device 31 and stored in the shipping forecast / actual storage unit 310 as the weight after filling.

(Step S8)
The weight determination unit 313 of the shipping management device 31 determines whether or not the measured weight after filling is overloaded and / or overfilled.

(Step S9)
If there is no problem in the weight determination unit 313, the shipping management device 31 gives a command to the printer 43, and the printer 43 automatically issues a weighing sheet and an analysis table. The shipping management device 31 has a document creation unit (not shown) for creating a weighing sheet and an analysis table.

(Step S10)
The crew receives the weighing slip and analysis table, and the tank truck leaves.

(Automatic analyzer)
The automatic analyzer 7 shown in FIG. 4 includes a trace nitrogen analyzer 71, a trace oxygen analyzer 72, a magnetic oxygen analyzer 73, and a capacitance type dew point meter 74. In the case of analysis by gas chromatography, an analytical sample is sent to an external gas chromatograph, and each route for that is provided.
The automatic analyzer of the present embodiment can automatically switch and analyze the analysis sample gas from the tank lorry and the product gas from the product tank according to the analysis purpose. As another embodiment, the device for automatically analyzing the analysis sample gas from the tank lorry and the device for automatically analyzing the product gas from the product tank may be separate devices.

5A to 5C show an example of the route of the automatic analyzer 7.
First, the analysis of liquefied nitrogen will be described with reference to FIG. 5A. The first introduction route L511 shows a route for introducing the analysis sample gas of liquefied nitrogen derived from the tank lorry through the above-mentioned analysis pipe (not shown). The second introduction route L512 indicates a route for introducing the liquefied nitrogen gas derived from the product tank. The piping path L513 is connected to the first introduction path L511 and the second introduction path L512 via the first path switching means A1. The piping path L513 is connected to the micro oxygen analyzer 72 and the capacitance type dew point meter 74, and the exhaust gas discharged from the micro oxygen analyzer 72 and the capacitance type dew point meter 74 is sent to the exhaust pipe through the exhaust path L514. Is done. As a result, liquefied nitrogen from the tank lorry and liquefied nitrogen from the product tank can be automatically switched and analyzed. The analyzed measurement data is sent to the distributed control device 8.
The first path switching means A1 is a four-way switching valve, and is provided with a sensor BS1 for detecting whether or not the valve switching has been executed. A mass flow meter MF1 is provided in the piping path L513 between the first path switching means A1 and the trace oxygen analyzer 72, and measures the flow rate of liquefied nitrogen. The sensor detection signal detected by the sensor BS1 is sent to the route switching control unit 81 (switching normality determination unit 811). The measured flow rate measured by the mass flow meter MF1 is sent to the route switching control unit 81 (switching normality determination unit 811). Since the piping path L513 is branched, a measuring means for measuring the flow rate introduced into the capacitance type dew point meter 74 may or may not be provided.

Next, the analysis of liquefied argon will be described with reference to FIG. 5B. The first introduction path L521 shows a path for introducing the analysis sample gas of liquefied argon derived from the tank lorry through the above-mentioned analysis pipe (not shown). The second introduction path L522 indicates a path for introducing the liquefied argon gas derived from the product tank. The piping path L523 is connected to the first introduction path L521 and the second introduction path L522 via the first path switching means A2. The piping path L523 is further sent to the first branch path L5231 to be sent to gas chromatography, the trace nitrogen analyzer 71, the trace oxygen analyzer 72, and the capacitance type dew point meter 74 via the branch switching means A3. A bifurcated path L5322 is provided. The exhaust gas discharged from the trace nitrogen analyzer 71, the trace oxygen analyzer 72, and the capacitance type dew point meter 74 is sent to the exhaust pipe through the exhaust path L524. This makes it possible to automatically switch between liquefied argon from the tank truck and liquefied argon from the product tank for analysis. The analyzed measurement data is sent to the distributed control device 8.
The first path switching means A2 is a four-way switching valve, and is provided with a sensor BS2 for detecting whether or not the valve switching has been executed. The branch switching means A3 is a three-way switching valve, and is provided with a sensor BS3 for detecting whether or not the valve switching has been executed.
A mass flow meter MF1 is provided in the piping path L5322 between the branch switching means A3 and the trace oxygen analyzer 72, and measures the flow rate of liquefied argon. A mass flow meter MF2 is provided in the piping path L5232 between the branch switching means A3 and the trace nitrogen analyzer 71, and measures the flow rate of liquefied argon. A mass flow meter MF4 is provided in the piping path L5231 between the branch switching means A3 and the gas chromatography, and measures the flow rate of liquefied argon.
The sensor detection signal detected by the sensors BS2 and BS3 is sent to the route switching control unit 81 (switching normality determination unit 811). The measured flow rate measured by the mass flow meters MF1 and MF2 is sent to the route switching control unit 81 (switching normality determination unit 811).

Next, the analysis of liquefied oxygen will be described with reference to FIG. 5C. The first introduction route L531 shows a route for introducing the analysis sample gas of liquefied oxygen derived from the tank lorry through the above-mentioned analysis pipe (not shown). The second introduction route L532 indicates a route for introducing the liquefied oxygen derived from the product tank. The piping path L533 is connected to the first introduction path L531 and the second introduction path L532 via the first path switching means A4. The piping path L533 further includes a first branch path L5331 that is sent to gas chromatography via the branch switching means A5, and a second branch path L5332 that is sent to the magnetic oxygen analyzer 73 and the capacitance type dew point meter 74. Be prepared. The exhaust gas discharged from the magnetic oxygen analyzer 73 and the capacitance type dew point meter 74 is sent to the exhaust pipe through the exhaust path L534. As a result, the liquefied oxygen from the tank lorry and the liquefied oxygen from the product tank can be automatically switched and analyzed. The analyzed measurement data is sent to the distributed control device 8.
The first path switching means A4 is a four-way switching valve, and is provided with a sensor BS4 for detecting whether or not the valve switching has been executed. The branch switching means A5 is a three-way switching valve, and is provided with a sensor BS5 for detecting whether or not the valve switching has been executed.
A mass flow meter MF3 is provided in the piping path L5332 between the branch switching means A5 and the magnetic oxygen analyzer 73, and measures the flow rate of liquefied oxygen. A mass flow meter MF4 is provided in the piping path L5331 between the branch switching means A5 and the gas chromatography, and measures the flow rate of liquefied oxygen.
The sensor detection signal detected by the sensors BS4 and BS5 is sent to the route switching control unit 81 (switching normality determination unit 811). The measured flow rate measured by the mass flow meters MF3 and MF4 is sent to the route switching control unit 81 (switching normality determination unit 811).

In the present embodiment, the route switching means A1, A2, and A4 are four-way switching valves. Normally, the gas from the product tank is sent to the analyzer, and when the analysis is performed from the lorry, the analysis sample gas from the lorry is switched to be sent to the analyzer. In the present embodiment, the branch switching means A3 and A5 are three-way switching valves. The route switching means A3 and A5 switch the route to the analyzer and gas chromatography. These switching controls are performed by the distributed control device 8 described later.
Further, a piping path into which zero gas, comparative gas, or the like is introduced may be further provided for calibration of various analyzers.

The distributed control device 8 shown in FIG. 1C includes a route switching control unit 81 that issues a command to the route switching means to control the switching of the route, and a purge control unit 82 that automatically controls the purge time for purging the route with the analysis sample gas. , The stability determination unit 83 that determines the stability of various measured values, the comparison unit 84 that compares the measured value and the standard value after the stability determination unit 83 determines that the measurement value is stable, and the comparison result of the comparison unit 84 It has a repeat control unit 85 that repeatedly executes analysis by the automatic analyzer 7 when the standard value is not satisfied, and a data storage unit 80 that stores various analysis data in association with the measurement time.
The route switching control unit 81 includes sensor detection signals detected by the sensors SB1, SB2, SB3, SB4, and SB5 provided in the route switching means A1, A2, A3, A4, and A5, and various analyzers 71, 72, and 73. (And gas chromatography) mass flow meters MF1, MF2, MF3. It has a switching normality determination unit 811 that determines whether or not the route switching is normal based on the measured flow rate measured by the MF4.
The stability determination unit 83 and the comparison unit 84 perform stability determination and comparison for all measured values (data of each analyzer).

(Stable judgment method)
The stability determination unit 83 may determine the stability of the temporally continuous measurement data measured by various analyzers in real time, or may determine the stability at a predetermined sampling cycle. Further, the stability determination unit 83 may make a stability determination using measurement data measured at predetermined intervals in batches by various analyzers (including gas chromatography). For example, the measurement data continuously measured by a dew point meter, an oxygen analyzer, and a nitrogen analyzer may be determined to be stable in real time, and the measurement data of gas chromatography may be determined to be stable in a batch.

FIG. 2B shows an example of the operation flow of the automatic analysis. First, when the automatic analysis button is pressed, in step S61, a process of switching from the route in which the product gas is introduced from the product tank to the analyzer to the route in which the analysis sample gas is introduced from the lorry to the analyzer is performed. The four-way switching valve A1 is operated to send the analysis sample gas from the lorry to the exhaust pipe.

In step S62, a purge process is performed. In the purge process, the time-up of the preset purge time is monitored. Within this purge time, the gas has a sufficient atmospheric concentration in the path from the lorry to the four-way switching valve A1.

When the time is up (time has passed), in step S63, the four-way switching valve A1 is switched to switch the route so that the analysis sample gas is sent from the exhaust pipe to each analyzer.

In step S64, it is determined whether or not the valve switching is normal in the monitoring within a predetermined time after the switching of the four-way switching valve. The switching normal determination unit 811 determines that the switching is normal when the sensor detection signal is normal (for example, there is a detection signal) and the measurement flow rate is within the normal range, and when it is not, the switching is normal. If not, the analysis is terminated as an analysis abnormality (S67). In the present embodiment, the switching normality determination unit 811 ignores the measured flow rate during the period from when the sensor detection signal is determined to be normal until a predetermined time elapses, and makes a determination based on the measured flow rate after the predetermined time elapses. do.

If the four-way switching valve is normally switched in step S64, the process proceeds to step S65 to determine the start of analysis. Within this predetermined time, the gas has a sufficient atmospheric concentration in the path from the four-way switching valve to each analyzer.
Steps S61 to S64 depend on the functions of the route switching control unit 81 and the purge control unit 82.

In step S65, the stability determination unit 83 first determines the analysis start (function of the first sub-determination unit). It is confirmed whether the measured value measured by various analyzers is equal to or less than the standard value (for example, FIG. 3). If the measured value exceeds the standard value, the analysis is regarded as abnormal and the analysis end processing is performed (step S67). If the measured value is equal to or less than the standard value, the analysis process is started (step S66).

In step S66, the stability determination unit 83 performs an analysis process (function of the second sub-determination unit). The stability determination unit 83 monitors the measured value and monitors the time-up of the preset maximum analysis time (substep Ss1).

In the present embodiment, the stability determination unit 83 measures all the measured values three times in a row at predetermined time intervals (for example, every 30 seconds) within the standard values and within each predetermined period. Is within the range of the upper limit value and the lower limit value (referred to as within the vertical width) based on the first measured value within the predetermined period (substep Ss2).
When the state within the vertical width is continued three times in a row, it is determined that the analysis is normal (analysis is normal). Then, the analysis end processing of step S67 is performed. In the analysis end process of step S67, the four-way valve A1 switches to the path to the product tank.
If it is outside the vertical width, the process returns to the above substep Ss2 from the time when the measured value is within the standard value range again, and the process is repeated.
If the maximum analysis time elapses before the analysis becomes normal, the analysis end process (step S67) is performed as an analysis abnormality (analysis value invalidity). When the analysis is completed due to an analysis abnormality and the analysis is to be performed again, the process from step S61 is repeated by pressing the automatic analysis button.

A specific example of the present embodiment will be described with reference to FIG. 3 for analysis start determination and stability determination processing.
FIG. 3 shows the measurement data of the dew point for a certain period from the initial measurement. The broken line indicates the range of the standard value (in FIG. 3, only the broken line of the upper limit value is shown, but the lower limit value is actually set). During continuous measurement, it is schematically shown whether or not the measured value (the broken solid line connecting the round dots) falls between the upper limit H (dashed line) and the lower limit L (dashed line).
The horizontal axis shows the number of measurement points, but since the measurement data is actually collected from the dew point meter in real time, the stability judgment is also performed in real time.

Measurement points 1 and 2 are eye-up monitoring after the valve is opened. The time-up time is set arbitrarily. Next, the analysis start determination is started, and the measurement point 5 is within the standard value range.
Since the measurement point 5 was within the standard value range, the stability determination starts from here. The width of the upper limit H and the lower limit L is set based on the measured value at the measurement point 5. The upper limit H and the lower limit L are arbitrary set values (corresponding to the above-mentioned vertical width).
The measured value at the measurement point 6 does not fall within the range of the upper limit H and the lower limit L based on the measured value at the measurement point 5, but is within the range of the standard value, so the stability determination process is continued.
The width of the upper limit H and the lower limit L is set based on the measured value at the measurement point 6.
The measured value at the measurement point 7 does not fall within the range of the upper limit H and the lower limit L based on the measured value at the measurement point 6, but is within the range of the standard value, so the stability determination process is continued.
The width of the upper limit H and the lower limit L is set based on the measured value at the measurement point 7.
The measured value at the measurement point 8 does not fall within the range of the upper limit H and the lower limit L based on the measured value at the measurement point 7, but is within the range of the standard value, so the stability determination process is continued.
The width of the upper limit H and the lower limit L is set based on the measured value at the measurement point 8.
The measured value at the measurement point 9 does not fall within the range of the upper limit H and the lower limit L based on the measured value at the measurement point 8, but is within the range of the standard value, so the stability determination process is continued.
The width of the upper limit H and the lower limit L is set based on the measured value at the measurement point 9.
The measured value at the measurement point 10 falls within the range of the upper limit H and the lower limit L based on the measured value at the measurement point 9.
The measured value at the measurement point 11 falls within the range of the upper limit H and the lower limit L based on the measured value at the measurement point 9.
The stability determination unit 83 has an upper limit H and a lower limit based on the first measured value (measurement point 9) within the first predetermined time (here, within the period from measurement points 9 to 11). It is determined whether or not all the measured values of the measurement points to be determined within the predetermined time are contained in L, and it is confirmed whether or not all the measured values are within the vertical width thereof.
Then, within the second predetermined time (within the period from the measurement points 12 to 14) and within the third predetermined time (within the period from the measurement points 15 to 17), the determination is made in the same manner as described above. (N = 12 to 17)
The stability determination unit 83 confirms whether or not the state in which the measured value within the predetermined time is within the vertical width corresponding to each is continued three times in a row, and the state in which the measured value within the vertical width is within the vertical width is continued three times in a row. If it is, it is judged that the analysis is normal.

The comparison unit 84 uses the last measured value (or the most frequent value or the average value among the measured values determined to be normal at measurement points 9 to 17) determined to be normal in the analysis and the standard value (in the above determination). The standard value used may be used, or the standard value for stricter pass / fail judgment may be used.), And the pass / fail judgment is made.

According to this embodiment, the stability of the measured value can be automatically confirmed with high accuracy. Furthermore, if the measured value is bad, a message to the effect that "analysis is abnormal" can be sent to the speaker or display device. Then, the crew can check the leakage from the analysis pipe and the valve state, and then touch the card again with the card reader to redo the analysis.

(Separate embodiment)
Not only the dew point measurement data, but also the oxygen measurement data, the nitrogen measurement data, and the gas chromatography measurement data can be similarly stabilized.
When the state within the vertical width was continued three times in a row, the analysis was judged to be normal and stable, but it is not limited to this and may be changed according to the type of analysis. It may be stable if it is continued 6 times in a row.
In the stability determination process, all the measured values (first, ..., nth measured value) within a predetermined time from the measured value (referred to as the first measured value) within the standard value range are within the standard value range. Whether or not each measured value (i-th measured value) to be judged is within the range of the upper limit value and the lower limit value based on the immediately preceding (i-1) measured value). May be determined.
Further, in the period of measurement points 9 to 11, the period of measurement points 12 to 14, and the period of measurement points 15 to 17, the setting of the upper limit value and the lower limit value (vertical width) from the reference may be the same or different. It may be set in a range in which the vertical width is narrower (smaller) toward the back, before and after the time. Further, the upper limit value and the lower limit value may have the same absolute value from the reference and may be different from each other.

The communication means of the network is not particularly limited, and for example, a short-range radio, a medium-range radio, a LAN line, an Internet line, or the like may be used depending on the system configuration.
The various storage units, storage units, and memories may be volatile storage media or non-volatile storage media, but non-volatile storage media are preferable.
Each server and each device has hardware such as a CPU, MPU, and memory, and software for executing various operations may be installed, and is configured to have a dedicated circuit, firmware, and the like. You may.

1 Liquefied product automatic shipping system 2 Vehicle allocation management device 31 Shipping management device 41 Tablet 42 Card reader 43 Printer 44 Speaker 45 Display device 47 Track scale 51, 52, 53 Card reader 61, 62, 63 Speaker 7 Automatic analyzer 8 Distributed control device

Claims (7)

A vehicle allocation management device for managing the loading schedule of tank trucks,
A shipping management device installed in the first area and connectable to the vehicle allocation management device via a network,
A first data reading device installed in the first area or a second area different from the first area and connectable to the shipping management device via a network.
A first output means installed in the same area as the first data reading device and connectable to the shipping management device via a network.
A truck scale that can be connected to the vehicle allocation management device via a network and measures the weight of the tank truck,
A second data reader installed in a third area different from the first and second areas and installed corresponding to each liquefied product,
A second output means installed in the third area and connectable to the shipping management device via a network,
An automatic analyzer that automatically introduces the liquid product to be filled and performs analysis,
A distributed control device that controls the automatic analyzer and
Equipped with an automatic shipping system for liquefied products. The shipping management device is
The data read by the second data reader and the filling collation unit that collates whether the admission clock has been completed and whether the gas type of the filling site is appropriate.
The liquefied product automatic shipping system according to claim 1, further comprising a weight determination unit for determining whether or not the measured weight after filling is overloaded. The automatic analyzer
The first introduction route of various analytical sample gases derived from the tank truck,
The second introduction route of various product tank gas derived from various product tanks,
A piping route in which the first introduction route and the second introduction route are connected via a route switching means, and
Various analyzers connected to the piping path,
The liquefied product automatic according to claim 1 or 2, further comprising the route switching means and / or an exhaust path connected to the piping path and for sending various analytical sample gases and / or various product tank gases to the exhaust pipe. Shipping system. The distributed control device is
A route switching control unit that issues a command to the route switching means for switching between the first introduction route and the second introduction route and controls the switching of the route.
A stability judgment unit that determines the stability of measured values,
After the stability judgment unit determines that the product is stable, a comparison unit that compares the measured value with the standard value,
A repeat control unit that controls the operation of various analyzers so that analysis by various analyzers is repeatedly executed when the comparison result of the comparison unit does not satisfy the standard value.
The liquefied product automatic shipping system according to any one of claims 1 to 3, further comprising a data storage unit that stores various measurement data in association with the measurement time. The stability determination unit
The first sub-judgment unit that determines whether or not an arbitrary measured value is below the standard value,
All of the measured values at one or more predetermined time intervals are within the standard value range, and the measured values within each predetermined period are the upper limit value and the lower limit value based on the first measured value within the predetermined period. The liquefied product automatic shipping system according to any one of claims 1 to 4, further comprising a second sub-determining unit for determining whether or not the product falls within the range of. The route switching control unit
7. Liquefied product automatic shipping system. An automatic analyzer that automatically introduces the liquid product to be filled and performs analysis,
A liquefied product automatic analysis system including a control device for controlling the automatic analyzer.
The automatic analyzer
The first introduction route of various analytical sample gases derived from the tank truck,
The second introduction route of various product tank gas derived from various product tanks,
A piping route in which the first introduction route and the second introduction route are connected via a route switching means, and
Various analyzers connected to the piping path,
It is provided with the route switching means and / or an exhaust path connected to the piping path and for sending various analytical sample gases and / or various product tank gases to the exhaust pipe.
The control device is
A route switching control unit that issues a command to the route switching means for switching between the first introduction route and the second introduction route and controls the switching of the route.
A stability judgment unit that determines the stability of measured values,
After the stability judgment unit determines that the product is stable, a comparison unit that compares the measured value with the standard value,
A repeat control unit that controls the operation of various analyzers so that analysis by various analyzers is repeatedly executed when the comparison result of the comparison unit does not satisfy the standard value.
An automatic analysis system for liquefied products, which has a data storage unit that stores various measurement data in association with the measurement time.

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