JP6045160B2 - Wave making apparatus and wave making method - Google Patents
Wave making apparatus and wave making method Download PDFInfo
- Publication number
- JP6045160B2 JP6045160B2 JP2012046434A JP2012046434A JP6045160B2 JP 6045160 B2 JP6045160 B2 JP 6045160B2 JP 2012046434 A JP2012046434 A JP 2012046434A JP 2012046434 A JP2012046434 A JP 2012046434A JP 6045160 B2 JP6045160 B2 JP 6045160B2
- Authority
- JP
- Japan
- Prior art keywords
- wave
- air supply
- opening
- valve
- wave making
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Description
本願発明は、造波装置及び造波方法に関し、より詳細には、安価に任意波形の長周期波を造波可能な造波装置及び造波方法に関する。 The present invention relates to a wave making device and a wave making method, and more particularly, to a wave making device and a wave making method capable of making a long-period wave having an arbitrary waveform at a low cost.
水理実験において、津波のような長周期の波を造波する方法としては、ロングストロークのピストン式のものや、ポンプによるものがあるが、これらは装置が大規模となり、設置費用が高価である。
なお、比較的簡易に造波する装置としては、チャンバ内に水槽よりも高い位置まで水を貯め、これを吐き出すことによる造波装置が知られているが、造波する波の波形を任意に制御することが困難である。
In hydraulic experiments, there are long-stroke piston types and pump-based methods for generating long-period waves such as tsunamis, but these are large-scale equipment and expensive to install. is there.
In addition, as a device for making waves relatively easily, a wave making device is known that stores water up to a position higher than the water tank in the chamber and discharges it. It is difficult to control.
波形を任意制御する一例として、下記の特許文献１に記載の造波装置がある。
特許文献１に記載の造波装置では、チャンバ内に水位検出計を設け、チャンバ内の水位変動を検知しつつ、給気弁の開度を制御しながらチャンバ内に給気することによって、波の形状を整える方法が開示されている。
As an example of arbitrarily controlling the waveform, there is a wave making device described in Patent Document 1 below.
In the wave making device described in Patent Document 1, a water level detector is provided in the chamber, and by detecting the water level fluctuation in the chamber and supplying air into the chamber while controlling the opening of the air supply valve, A method for adjusting the shape of the sheet is disclosed.
しかし、上記した従来技術では、以下に示す問題を有する。
（１）特許文献１の造波装置を実用に供するためには、一般的な水理実験スケールでみた場合、１秒以下の短時間で給気弁の開度を正確に制御可能な給気弁と制御部を設ける必要がある。しかし、一般に入手できる開度調整可能な吸排気弁には、このような短時間で制御可能なものはなく、既製品を使用できないため、造波装置の製作が非常に高価なものとなってしまう。
However, the above-described conventional techniques have the following problems.
(1) In order to put the wave generator of Patent Document 1 into practical use, when viewed on a general hydraulic experiment scale, the air supply capable of accurately controlling the opening of the air supply valve in a short time of 1 second or less It is necessary to provide a valve and a control unit. However, there are no commonly available intake / exhaust valves that can be adjusted in opening time, and there is no such thing that can be controlled in a short time. End up.
すなわち、本願発明は、安価に任意波形の波を造波可能な造波装置及び造波方法の提供を目的の一つとするものである。 That is, an object of the present invention is to provide a wave making device and a wave making method capable of making an arbitrary waveform at low cost.
前記課題を解決すべくなされた本願の第１発明は、水槽と、該水槽内の水と連通した気密空間を有するチャンバと、を少なくとも有し、前記気密空間を負圧状態にして前記水槽の水を前記チャンバ内に吸い上げ、前記負圧状態の解除により前記吸い上げた水を落下させて、水槽内に波を発生させる造波装置であって、前記気密空間は１つの区画からなり、前記チャンバに、前記気密空間を負圧状態にするための吸引弁と、開閉の有無のみを制御可能な電磁弁からなり、前記負圧状態の解除に用いる、複数の給気弁と、前記複数の給気弁に個別に接続する、複数の流量調整弁と、を少なくとも備えたことを特徴とする、造波装置を提供するものである。
また、本願の第２発明は、前記第１発明において、前記給気弁の開閉タイミングおよび前記流量調整弁の開度を電子制御可能な制御部をさらに備えたことを特徴とするものである。
また、本願の第３発明は、前記第１または第２発明に記載の造波装置を用いた造波方法であって、前記給気弁の開閉タイミングと、前記流量調整弁の開度のうち、何れか一方或いは両方をそれぞれ変えることによって、異なる波形の波を発生させることを特徴とする、造波方法を提供するものである。
また、本願の第４発明は、前記第１または第２発明に記載の造波装置を用いた造波方法であって、前記流量調整弁の開度と前記給気弁の開閉タイミングを予め設定した状態としてから、前記給気弁の開閉を行って、所望の波形の波を発生させることを特徴とする、造波方法を提供するものである。
The first invention of the present application, which has been made to solve the above-mentioned problems, has at least a water tank and a chamber having an airtight space communicating with the water in the water tank. A wave making device that sucks water into the chamber and drops the sucked water by releasing the negative pressure state to generate a wave in the water tank, wherein the airtight space is composed of one section, and the chamber to, said airtight space for a negative pressure in the suction valve, only made controllable solenoid valve whether open, used to release the negative pressure state, and a plurality of air supply valve, said plurality of sheet The present invention provides a wave generator comprising at least a plurality of flow rate adjusting valves individually connected to the air valve.
The second invention of the present application is characterized in that, in the first invention, further comprises a control unit capable of electronically controlling the opening / closing timing of the air supply valve and the opening of the flow rate adjusting valve.
A third invention of the present application is a wave making method using the wave making device according to the first or second invention, and includes an opening / closing timing of the air supply valve and an opening degree of the flow regulating valve. The present invention provides a wave-making method characterized by generating waves having different waveforms by changing either or both of them.
A fourth invention of the present application is a wave making method using the wave making device according to the first or second invention, wherein an opening degree of the flow rate adjusting valve and an opening / closing timing of the air supply valve are set in advance. In this state, a wave making method is provided, wherein the air supply valve is opened and closed to generate a wave having a desired waveform.
本願発明によれば、下記に示す効果のうち、少なくとも何れか一つを得ることができる。
（１）高価な給気弁を用いる必要がなく、既製品を用いた製作が可能であるため、安価に製作できる。
（２）複数の給気弁を利用することにより、任意の波形の造波が可能となる。
（３）流量調整弁の併用により、より自由度の高い造波が可能となる。
According to the present invention, at least one of the following effects can be obtained.
(1) It is not necessary to use an expensive air supply valve, and since it can be manufactured using a ready-made product, it can be manufactured at low cost.
(2) By using a plurality of air supply valves, it becomes possible to make an arbitrary waveform.
(3) By using the flow rate adjusting valve in combination, it is possible to make waves with a higher degree of freedom.
各図面を参照しながら、本願発明の造波装置について説明する。 The wave making device of the present invention will be described with reference to the drawings.
＜１＞全体構成
本願発明の造波装置の構成を図１に示す。
本願発明に係る造波装置は、水槽１と、水槽２に底部を没するように配置したチャンバ２と、前記チャンバ２に設ける吸引部３及び給気部４と、少なくとも前記給気部４の動作を制御可能な制御部５と、で構成することができる。
水槽１は、水理実験等に用いる一般的な実験水層であり、詳細な説明を省略する。
<1> Overall Configuration FIG. 1 shows the configuration of the wave making device of the present invention.
The wave making device according to the present invention includes a water tank 1, a chamber 2 disposed so that a bottom is submerged in the water tank 2, a suction unit 3 and an air supply unit 4 provided in the chamber 2, and at least the air supply unit 4. And a control unit 5 capable of controlling the operation.
The water tank 1 is a general experimental water layer used for hydraulic experiments and the like, and detailed description thereof is omitted.
＜２＞チャンバ
チャンバ２は、チャンバ２内への水の吸引・吐出により、前記水槽１内で造波を行うための装置である。
チャンバ２の底部近傍には、前記水槽２の水中に没するように設けた開口２１を形成する。前記開口２１を介した水の流出入により、水槽１内で造波を行う。
チャンバ２の内部は、チャンバ２の外壁と水槽内の水面とで囲まれた気密空間２２となる。
<2> Chamber The chamber 2 is a device for making waves in the water tank 1 by sucking and discharging water into the chamber 2.
In the vicinity of the bottom of the chamber 2, an opening 21 provided so as to be immersed in the water of the water tank 2 is formed. Waves are generated in the water tank 1 by the flow of water through the opening 21.
The inside of the chamber 2 becomes an airtight space 22 surrounded by the outer wall of the chamber 2 and the water surface in the water tank.
＜３＞吸引部
吸引部３は、チャンバ２内の気密空間を負圧状態にして水槽１内の水をチャンバ２内に吸い込むための装置である。
吸引部３は、吸引路に設ける吸引弁３１及び吸引ポンプ３２でもって構成することができる。吸引ポンプ３２による吸引力を吸引弁３１の開放で伝えることにより、前記気密空間２２を負圧状態にする。チャンバ２において、吸引部３を設ける箇所は特に限定しない。
<3> Suction Unit The suction unit 3 is a device for setting the airtight space in the chamber 2 to a negative pressure state and sucking water in the water tank 1 into the chamber 2.
The suction unit 3 can be configured with a suction valve 31 and a suction pump 32 provided in the suction path. By transmitting the suction force by the suction pump 32 by opening the suction valve 31, the airtight space 22 is brought into a negative pressure state. In the chamber 2, the location where the suction part 3 is provided is not particularly limited.
＜４＞給気部
給気部４は、チャンバ２内の気密空間２２に給気して、チャンバ２内に引き込まれた水を吐き出すための装置である。
給気部４は、管路に設ける給気弁４１を複数設けることによって構築する。
給気弁４１には、短時間で開閉の有無を制御可能な可変式の給気弁が望ましく、例えば、電磁弁を利用することができる。
なお、給気弁４１を複数設け、それらの給気弁４１を個別制御することで、チャンバ２内の給気量を任意に制御することから、給気弁４１について開閉角度の設定を短い応答時間で制御可能な高価な部材を使用する必要は無い。
また、本発明において給気弁４１の数、配置箇所等は特に制限されない。
<4> Air Supply Unit The air supply unit 4 is a device for supplying air to the airtight space 22 in the chamber 2 and discharging the water drawn into the chamber 2.
The air supply unit 4 is constructed by providing a plurality of air supply valves 41 provided in the pipeline.
The supply valve 41 is preferably a variable supply valve that can control the opening / closing of the supply valve in a short time. For example, an electromagnetic valve can be used.
Since a plurality of air supply valves 41 are provided, and the air supply amount in the chamber 2 is arbitrarily controlled by individually controlling the air supply valves 41, the response of setting the open / close angle for the air supply valve 41 is short. There is no need to use expensive components that can be controlled in time.
Further, in the present invention, the number of air supply valves 41, the arrangement location, and the like are not particularly limited.
＜５＞制御部
制御部５は、少なくとも前記給気部４を制御するための装置である。
制御部５は、電子計算機などの情報処理装置を用いることができ、前記給気弁４の開閉の有無やタイミングを個別に電子制御可能に構成する。
なお、制御部５は、必要に応じて前記吸引部３も制御可能に構成してもよい。
<5> Control Unit The control unit 5 is a device for controlling at least the air supply unit 4.
The control unit 5 can use an information processing device such as an electronic computer, and is configured to be able to electronically control the presence / absence and timing of the supply valve 4 individually.
The control unit 5 may be configured to control the suction unit 3 as necessary.
＜６＞使用方法
次に、本願発明の造波装置の使用方法について説明する。
（１）吸引工程
まず、吸引弁３１を開き吸引ポンプ３２によりチャンバ２内の空気を吸引する。この時、給気弁４１は全て閉じておく。これによりチャンバ２内の圧力が低下し水位が上昇する。所定の高さまで水を吸引したら吸引弁３１を閉じる。
<6> Usage Method Next, a usage method of the wave making device of the present invention will be described.
(1) Suction Step First, the suction valve 31 is opened and the air in the chamber 2 is sucked by the suction pump 32. At this time, all the air supply valves 41 are closed. As a result, the pressure in the chamber 2 decreases and the water level increases. When the water is sucked to a predetermined height, the suction valve 31 is closed.
（２）給気工程
チャンバ２内の水位が上昇した状態から、給気弁４１を開放することにより、チャンバ２内の水柱が落下し、開口２１より水が排出されることによって、水槽１内で造波を行う。
この時、各給気弁４１の解放タイミングを制御部５によって適宜変えることにより、造波波形を変更することができる。
(2) Air supply process By opening the air supply valve 41 from the state where the water level in the chamber 2 has risen, the water column in the chamber 2 falls and water is discharged from the opening 21, so that the water tank 1 Make a wave.
At this time, the wave forming waveform can be changed by appropriately changing the release timing of each air supply valve 41 by the control unit 5.
＜７＞造波例
図２〜４に、本願発明の造波装置を用いた水理実験によって確認した結果を示す。これらは、給気弁４１を６つ設置したときの例である。
図２は、６つの給気弁４１を０．１秒おきに順に開放した場合、図３は、同様に０．３秒おきに順に開放した場合、図４は０．３秒おきに６つの給気弁４１を順に開放したのち、連続して０．３秒おきに給気弁４１を順に閉じた場合の、造波された波の時系列を示している。
<7> Wave Making Examples FIGS. 2 to 4 show the results confirmed by a hydraulic experiment using the wave making apparatus of the present invention. These are examples when six supply valves 41 are installed.
2 shows that when the six air supply valves 41 are opened sequentially every 0.1 seconds, FIG. 3 shows that when the air supply valves 41 are opened sequentially every 0.3 seconds, FIG. The time series of the wave made when the air supply valve 41 is opened in order and then the air supply valve 41 is sequentially closed every 0.3 seconds is shown.
これらを比較すると、水位の上昇速度や下降速度がそれぞれ異なった造波が可能であることが示されている。
また、不連続で段階的な給気弁４１の開度変化にも関わらず、滑らかな波形の造波が可能であることが分かる。図２〜４は単純な造波例であるが、６つ程度の給気弁４１であっても、自由度の高い滑らかな波形の造波が可能であることが分かる。
When these are compared, it is shown that wave formation with different rising speed and falling speed of the water level is possible.
In addition, it can be seen that smooth wave formation is possible despite the discontinuous and stepwise change in the opening of the air supply valve 41. Although FIGS. 2 to 4 show simple wave-making examples, it can be seen that even with about six air supply valves 41, wave-making with a smooth waveform with a high degree of freedom is possible.
本願発明の造波装置の第２実施例について、図５を参照しながら説明する。
本願発明は、第１実施例より更に自由度の高い造波装置として、給気部４に流量調整弁４２を更に設けることができる。
この流量調整弁４２を、目的の波形を造波出来るように予め給気弁４１毎の流量を個別に調整しておくことにより、より目的の波形に近い波を造波することが可能となる。
A second embodiment of the wave making device of the present invention will be described with reference to FIG.
In the present invention, a flow regulating valve 42 can be further provided in the air supply unit 4 as a wave making device having a higher degree of freedom than the first embodiment.
By adjusting the flow rate of each air supply valve 41 in advance so that the target waveform can be generated with this flow rate adjustment valve 42, it is possible to generate a wave closer to the target waveform. .
なお、造波に際し、制御部５による給気弁４１の開閉制御のタイミングや、流量調整弁４２の開度は、予め予備実験や数値計算により設定しておけばよい。 It should be noted that the timing of opening / closing control of the air supply valve 41 by the control unit 5 and the opening degree of the flow rate adjustment valve 42 may be set in advance by preliminary experiments or numerical calculations during wave making.
１ 水槽
２ チャンバ
２１ 開口
２２ 気密空間
３ 吸引部
３１ 吸引弁
３２ 吸引ポンプ
４ 給気部
４１ 給気弁
４２ 流量調整弁
５ 制御部
DESCRIPTION OF SYMBOLS 1 Water tank 2 Chamber 21 Opening 22 Airtight space 3 Suction part 31 Suction valve 32 Suction pump 4 Air supply part 41 Air supply valve 42 Flow rate adjustment valve 5 Control part
Claims (4)
前記チャンバに、前記気密空間を負圧状態にするための吸引弁と、開閉の有無のみを制御可能な電磁弁からなり、前記負圧状態の解除に用いる、複数の給気弁と、前記複数の給気弁に個別に接続する、複数の流量調整弁と、を少なくとも備えたことを特徴とする、造波装置。 A water tank and a chamber having an airtight space communicating with the water in the water tank, and by sucking the water in the water tank into the chamber with the airtight space in a negative pressure state, by releasing the negative pressure state A wave-making device that drops the sucked-up water and generates a wave in a water tank, wherein the airtight space is composed of one section,
The chamber includes a suction valve for bringing the airtight space into a negative pressure state, and an electromagnetic valve that can be controlled only for opening / closing, and a plurality of air supply valves used for releasing the negative pressure state; And a plurality of flow rate adjustment valves individually connected to the air supply valve.
前記給気弁の開閉タイミングと、前記流量調整弁の開度のうち、何れか一方或いは両方をそれぞれ変えることによって、異なる波形の波を発生させることを特徴とする、造波方法。 A wave making method using the wave making device according to claim 1 or 2,
A wave making method, wherein waves having different waveforms are generated by changing either or both of the opening / closing timing of the air supply valve and the opening of the flow rate adjusting valve.
前記流量調整弁の開度と前記給気弁の開閉タイミングを予め設定した状態としてから、前記給気弁の開閉を行って、所望の波形の波を発生させることを特徴とする、造波方法。 A wave making method using the wave making device according to claim 1 or 2,
A wave-making method, wherein the opening of the flow rate adjusting valve and the opening / closing timing of the air supply valve are set in advance, and then the air supply valve is opened / closed to generate a wave having a desired waveform. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012046434A JP6045160B2 (en) | 2012-03-02 | 2012-03-02 | Wave making apparatus and wave making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012046434A JP6045160B2 (en) | 2012-03-02 | 2012-03-02 | Wave making apparatus and wave making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2013181869A JP2013181869A (en) | 2013-09-12 |
| JP6045160B2 true JP6045160B2 (en) | 2016-12-14 |
Family
ID=49272608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012046434A Active JP6045160B2 (en) | 2012-03-02 | 2012-03-02 | Wave making apparatus and wave making method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6045160B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6092016B2 (en) * | 2013-06-24 | 2017-03-08 | 一般財団法人電力中央研究所 | Tsunami flood flow reproduction method and tsunami flood flow experiment device |
| CN112411465B (en) * | 2020-11-26 | 2022-03-04 | 天津大学 | High-pressure wave water tank device |
| CN114018539B (en) * | 2021-09-15 | 2023-08-29 | 山东大学 | Submarine oil and gas pipeline stability model test device and test method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4838937Y1 (en) * | 1969-09-20 | 1973-11-16 | ||
| US4515500A (en) * | 1983-11-15 | 1985-05-07 | Ecopool Design Limited | Combustion powered wave generator |
| JP2522788B2 (en) * | 1987-04-08 | 1996-08-07 | 日立造船株式会社 | Wave making device |
| JP2521526Y2 (en) * | 1989-08-11 | 1996-12-25 | 三菱重工業株式会社 | Wave making device |
| JP2522210Y2 (en) * | 1991-10-14 | 1997-01-08 | 三菱重工業株式会社 | Wave making equipment |
| JPH0714350U (en) * | 1993-08-11 | 1995-03-10 | 三菱重工業株式会社 | Wave making device |
| JPH0854318A (en) * | 1994-08-09 | 1996-02-27 | Mitsubishi Heavy Ind Ltd | Wave making water tank |
| JP3695470B2 (en) * | 1995-01-20 | 2005-09-14 | 株式会社石井鐵工所 | Wave generator |
-
2012
- 2012-03-02 JP JP2012046434A patent/JP6045160B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013181869A (en) | 2013-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6045160B2 (en) | Wave making apparatus and wave making method | |
| US20140166115A1 (en) | Water hammer recognizing and energy saving water hammer prevention system and method for controlling the same | |
| EP2390382A3 (en) | Pulsed mass flow delivery system and method | |
| MX2023004076A (en) | Apparatus and method for harnessing energy from a wellbore to perform multiple functions while reducing emissions. | |
| JP2013134020A5 (en) | ||
| JP2012228658A (en) | Application apparatus | |
| RU2015134323A (en) | REGULATION METHOD FOR PUMP UNIT | |
| WO2015079221A3 (en) | Determination of turbulence in a fluid and control of array of energy producing devices | |
| WO2015063171A3 (en) | Device and method for ultrasonic cleaning | |
| JP6092016B2 (en) | Tsunami flood flow reproduction method and tsunami flood flow experiment device | |
| WO2012174113A3 (en) | Managing treatment of subterranean zones | |
| WO2006023737A3 (en) | Apparatus and method for enhanced heat transfer | |
| WO2012003101A3 (en) | System and method for controlling wellbore pressure | |
| CA3130304C (en) | An aquatic sports amusement apparatus | |
| JP6183789B2 (en) | Water channel design method for hydraulic experiment equipment | |
| JP2017188658A5 (en) | ||
| WO2008080249A3 (en) | Apparatus for gas handling in vacuum processes | |
| CN203538338U (en) | Static variable pressure curing machine for food | |
| JP6529113B2 (en) | Vibratory water column type wave power generator and method for obtaining control law for deriving air chamber volume used therein | |
| Kang et al. | Hydraulic characteristics of a siphon-shaped overflow tower in a long water conveyance system: CFD simulation and analysis | |
| JP6281630B2 (en) | Pressurized tank, apparatus for feeding powder into transport pipe, and method for feeding the same | |
| CN112903240B (en) | Visual observation device for excitation induced cavitation | |
| WO2011119952A3 (en) | Integrated system for vapor generation and thin film deposition | |
| CN102707739A (en) | Working state control system and control method for pumping oil supply simulation chamber | |
| KR101303327B1 (en) | Wave making apparatus and method of the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20150210 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20151008 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20151117 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20151216 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20160517 |
|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20160704 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20160712 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20161102 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20161115 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6045160 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |