JPH08219852A - Liquid level detection device for liquid transport vehicle - Google Patents
Liquid level detection device for liquid transport vehicleInfo
- Publication number
- JPH08219852A JPH08219852A JP2985595A JP2985595A JPH08219852A JP H08219852 A JPH08219852 A JP H08219852A JP 2985595 A JP2985595 A JP 2985595A JP 2985595 A JP2985595 A JP 2985595A JP H08219852 A JPH08219852 A JP H08219852A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- sensor
- level
- liquid level
- case
- 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.)
- Granted
Links
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
- Level Indicators Using A Float (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、タンクローリー車や航
空機給油車等の液体輸送車両の液面検出装置に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid level detecting device for a liquid transportation vehicle such as a tank truck or an aircraft refueling vehicle.
【０００２】[0002]
【従来の技術】従来、液体輸送車両、例えば、タンクロ
ーリー車や航空機給油車には、貯油タンクに油面検出装
置を設けており、同貯油タンクは前後方向に伸延させて
形成し、同貯油タンク内に複数の仕切壁を設けて複数の
貯油室を形成する一方、同油面検出装置は、その一形態
として各貯油室の底部に連通パイプの基端をそれぞれ連
通連結し、各連通パイプの先端を貯油タンクの後方位置
まで伸延させて、各連通パイプの先端部を二又状に分岐
させて分岐パイプを形成し、各分岐パイプの先端に油圧
レベルの上限と下限とを検出するためのレベルセンサを
それぞれ取付け、上限検出用のレベルセンサは貯油タン
クの後方上部に配置すると共に、下限検出用のレベルセ
ンサは貯油タンクの後方下部に配置したものがある。2. Description of the Related Art Conventionally, liquid transportation vehicles such as tank trucks and aircraft refueling vehicles are provided with an oil level detection device in an oil storage tank. The oil storage tank is formed by extending the oil storage tank in the front-rear direction. While providing a plurality of partition walls inside to form a plurality of oil storage chambers, the oil level detection device, as one form thereof, connects the base ends of the communication pipes to the bottoms of the respective oil storage chambers and connects them, respectively. Extending the tip to the rear position of the oil storage tank, branching the tip of each communication pipe into a forked shape to form a branch pipe, and detecting the upper and lower limits of the hydraulic pressure level at the tip of each branch pipe. There is one in which level sensors are attached respectively, and a level sensor for detecting an upper limit is arranged in the upper rear part of the oil storage tank, and a level sensor for detecting a lower limit is arranged in the lower rear part of the oil storage tank.
【０００３】そして、かかる油面検出装置では、貯油タ
ンク内に給油している際に、上限検出用のレベルセンサ
により上限を検出した場合には給油停止を行ない、ま
た、下限検出用のレベルセンサが下限を検出した場合に
は、補給の必要性をオペレータに喚起するようにしてい
る。In such an oil level detecting device, when the upper limit is detected by the level sensor for detecting the upper limit while the oil is being filled in the oil storage tank, the refueling is stopped and the level sensor for detecting the lower limit. When the lower limit is detected, the operator is urged to replenish the necessity.
【０００４】[0004]
【発明が解決しようとする課題】ところが、上記した油
面検出装置では、貯油タンク内に前後方向に隣接させて
形成した複数の貯油室内の油圧を検出する各レベルセン
サを、全て貯油タンクの後方に集中配置しているため
に、車体が前低後高又は前高後低の傾斜状態となってい
る場合には、各レベルセンサによる油面の検出が正確に
行なえず、精度良くタンク内への補給を行なうことがで
きないという不具合があった。However, in the above-mentioned oil level detection device, all the level sensors for detecting the oil pressure in the plurality of oil storage chambers formed adjacent to each other in the front-rear direction in the oil storage tank are all located at the rear of the oil storage tank. When the vehicle body is tilted to the front low rear high or front high rear low, the oil level cannot be accurately detected by each level sensor and the tank is accurately placed in the tank. There was a problem that it could not be replenished.
【０００５】[0005]
【課題を解決するための手段】そこで、本発明では、貯
液室の略中央部に上下方向に伸延する筒状のセンサ収容
ケースを架設し、同センサ収容ケース内と貯液タンク内
とを連通部を介して連通させ、同センサ収容ケース内の
上部に液面レベルの上限を検出する上限レベルセンサを
設けたことを特徴とする液体輸送車両の液面検出装置を
提供せんとするものである。Therefore, in the present invention, a cylindrical sensor accommodating case extending vertically is installed in a substantially central portion of the liquid accumulating chamber, and the inside of the sensor accommodating case and the inside of the liquid storage tank are connected to each other. A liquid level detection device for a liquid transportation vehicle, characterized in that an upper limit level sensor for detecting the upper limit of the liquid level is provided in the upper part of the sensor housing case so as to communicate with each other through a communication part. is there.
【０００６】また、本発明は、センサ収容ケース内の下
部に液面レベルの下限を検出する下限レベルセンサを設
けたこと、センサ収容ケース内の上部で、上限レベルセ
ンサよりも上方位置に、上限レベルセンサバックアップ
用のバックアップセンサを設けたこと、各センサは、上
下方向に位置調節自在としたことにも特徴を有する。Further, according to the present invention, a lower limit level sensor for detecting the lower limit of the liquid level is provided in the lower part of the sensor housing case, and an upper limit is provided above the upper limit level sensor in the upper part of the sensor housing case. It is also characterized in that a backup sensor for level sensor backup is provided and the position of each sensor is adjustable in the vertical direction.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面を参照しながら
説明する。Embodiments of the present invention will be described below with reference to the drawings.
【０００８】図１及び図２に示すＡは、液体輸送車両と
しての航空機給油車であり、同航空機給油車Ａは、車体
フレーム１の前部に運転部２を設け、その直後方位置に
給油作業部３を配設し、その直後方位置に貯油タンク４
を配設し、その直後方位置に制御部５を配設しており、
車体フレーム１の前後部下方位置にそれぞれ前後車輪
６，７，８，９を取付けている。1 and 2 is an aircraft refueling vehicle as a liquid transportation vehicle. The aircraft refueling vehicle A is provided with a driving section 2 in the front part of a body frame 1 and refueling at a position just behind it. The working unit 3 is provided, and the oil storage tank 4 is provided immediately behind it.
Is provided, and the control unit 5 is provided immediately after that.
Front and rear wheels 6, 7, 8 and 9 are attached to the lower front and rear portions of the body frame 1, respectively.
【０００９】貯油タンク４は、図１〜図３に示すよう
に、前後方向に伸延させて形成したタンク本体10内に四
つの仕切壁11,11,11,11 を前後方向に間隔を開けて立設
して、同タンク本体10内に五つの貯液室としての貯油室
12,12,12,12,12を形成している。なお、タンク本体10
は、導電性素材により成形している。As shown in FIGS. 1 to 3, the oil storage tank 4 has four partition walls 11, 11, 11, 11 spaced apart in the front-rear direction in a tank body 10 formed by extending the front-rear direction. Standing up, the tank body 10 has five oil storage chambers as liquid storage chambers.
12,12,12,12,12 are formed. The tank body 10
Is made of a conductive material.
【００１０】そして、図２及び図４に示すように、各貯
油室12の天井壁10a にそれぞれマンホール13を形成する
と共に、各マンホール13にマンホール蓋14を着脱自在に
取付け、各マンホール蓋14に本発明に係る液面検出装置
15と計量尺16と安全弁37とを取付けると共に、各マンホ
ール蓋14に視認窓17を形成し、各視認窓17に開閉蓋18を
着脱自在に取付け、また、各マンホール蓋14に近接する
天井壁10a の部分に強制開放弁19を取付けている。な
お、マンホール蓋14は、導電性素材により成形してい
る。As shown in FIGS. 2 and 4, manholes 13 are formed on the ceiling walls 10a of the oil storage chambers 12, respectively, and manhole covers 14 are detachably attached to the manholes 13, respectively. Liquid level detection device according to the present invention
15, the measuring scale 16 and the safety valve 37 are attached, and the viewing window 17 is formed in each manhole cover 14, the opening / closing lid 18 is detachably attached to each viewing window 17, and the ceiling wall adjacent to each manhole cover 14 is attached. The forced opening valve 19 is attached to the part 10a. The manhole cover 14 is made of a conductive material.
【００１１】また、図３に示すように、各貯油室12の底
部10b に、流入・流出パイプ20より各貯油室12の底部10
b へ向けて分岐させて形成した分岐パイプ20a,20a,20a,
20a,20a の先端をそれそぞれ開閉弁21,21,21,21,21を介
して接続し、同流入・流出パイプ20に、基端を燃料油供
給源22に接続した流入パイプ23の先端と、先端部に形成
した流出分岐パイプ24b,24b に給油用ノズル24a,24a を
接続した流出パイプ24の基端と、基端を流出パイプ24の
中途部に第１三方弁25を介して接続した戻しパイプ26の
先端とをそれぞれ接続しており、第１三方弁25の上流側
に位置する流出パイプ24の部分に給油用ポンプＰを設
け、同第１三方弁25の下流側に位置する流出パイプ24の
部分に戻し用バイパスパイプ27の基端を接続すると共
に、同戻し用バイパスパイプ27の先端を給油用ポンプＰ
の上流側に位置する流出パイプ24の部分に第２三方弁28
を介して接続している。29,30 はそれぞれドレーンパイ
プ、31,32,33,34,35はそれぞれ開閉弁、36は流量計であ
る。Further, as shown in FIG. 3, a bottom portion 10b of each oil storage chamber 12 is connected to a bottom portion 10b of each oil storage chamber 12 through an inflow / outflow pipe 20.
Branch pipes 20a, 20a, 20a, formed by branching toward b
The tips of 20a, 20a are connected via open / close valves 21, 21, 21, 21, 21, respectively, and the inflow / outflow pipe 20 and the inflow pipe 23 whose base end is connected to the fuel oil supply source 22 are connected. The tip, the base end of the outflow pipe 24 in which the oil supply nozzles 24a, 24a are connected to the outflow branch pipes 24b, 24b formed at the tip, and the base end in the middle of the outflow pipe 24 via the first three-way valve 25. An oil supply pump P is provided at a portion of the outflow pipe 24 located upstream of the first three-way valve 25 and connected to the tip of the connected return pipe 26, and is located downstream of the first three-way valve 25. The base end of the return bypass pipe 27 is connected to the portion of the outflow pipe 24 that runs, and the tip of the return bypass pipe 27 is connected to the oil supply pump P.
The second three-way valve 28 is provided in the portion of the outflow pipe 24 located on the upstream side of the
Connected through. 29 and 30 are drain pipes, 31, 32, 33, 34 and 35 are on-off valves, and 36 is a flow meter.
【００１２】このようにして、流入パイプ23の中途部に
取付けた開閉弁31を開放すると共に、各分岐パイプ20a
に取付けた開閉弁21を開放して、燃料油供給源22より航
空機燃料油を圧送することにより、流入パイプ23→流入
・流出パイプ20→分岐パイプ20a より貯油タンク４の各
貯油室12内に航空機燃料油を補給することができるよう
にしている。In this way, the on-off valve 31 attached to the middle portion of the inflow pipe 23 is opened, and each branch pipe 20a is opened.
By opening the on-off valve 21 attached to the engine and pumping the aircraft fuel oil from the fuel oil supply source 22, the inflow pipe 23 → the inflow / outflow pipe 20 → the branch pipe 20a into each oil storage chamber 12 of the oil storage tank 4. It enables the supply of aircraft fuel oil.
【００１３】そして、流入パイプ23の中途部に取付けた
開閉弁31を閉塞すると共に、各分岐パイプ20a に取付け
た開閉弁21、及び流入・流出パイプ20に取付けた開閉弁
32を開放し、かつ、流出パイプ24に取付けた第１・第２
三方弁25,28 を同流出パイプ24が給油用ノズル24a,24a
と連通する側に流路切換作動させ、かつ、流出分岐パイ
プ24b,24b に取付けた開閉弁33,33 を開放して、給油用
ポンプＰを駆動させることにより、貯油室12内の航空機
燃料油を分岐パイプ20a →流入・流出パイプ20→流出パ
イプ24→流出分岐パイプ24b,24b →給油用ノズル24a,24
a より航空機の燃料タンク内に供給することができるよ
うにしている。The on-off valve 31 attached to the middle of the inflow pipe 23 is closed, and the on-off valve 21 attached to each branch pipe 20a and the on-off valve attached to the inflow / outflow pipe 20.
First and second with 32 open and attached to outflow pipe 24
The outflow pipe 24 of the three-way valve 25, 28 is connected to the refueling nozzle 24a, 24a.
The aircraft fuel oil in the oil storage chamber 12 is operated by switching the flow path to the side communicating with the fuel tank, opening the on-off valves 33, 33 attached to the outflow branch pipes 24b, 24b, and driving the refueling pump P. Branch pipe 20a → Inflow / outflow pipe 20 → Outflow pipe 24 → Outflow branch pipe 24b, 24b → Refueling nozzle 24a, 24
a) It can be supplied into the fuel tank of the aircraft.
【００１４】また、各強制開放弁19には、基端を加圧空
気供給源41に接続した加圧空気供給パイプ40の先端に分
岐させて形成した分岐パイプ40a,40a,40a,40a,40a の先
端を着脱自在に接続して、加圧空気供給源41より加圧空
気供給パイプ40→分岐パイプ40a →強制開放弁19に加圧
空気を圧送することにより、各強制開放弁19を開放作動
させて、各貯油室12内を外気と連通させることができる
ようにしている。Further, each forced opening valve 19 has branch pipes 40a, 40a, 40a, 40a, 40a formed by branching the base end to the tip of a pressurized air supply pipe 40 connected to a pressurized air supply source 41. The front end of each of the forced opening valves 19 is detachably connected, and each forced opening valve 19 is opened by sending pressurized air from the pressurized air supply source 41 to the pressurized air supply pipe 40 → the branch pipe 40a → the forced opening valve 19. Thus, the inside of each oil storage chamber 12 can be communicated with the outside air.
【００１５】このようにして、貯油室12内の航空機燃料
を航空機の燃料タンク内に供給する際には、上記した各
強制開放弁19に分岐パイプ40a の先端を接続することに
より、同強制開放弁19を開放作動させて、各貯油室12内
を外気と連通させることにより、貯油室12内の航空機燃
料油の流出にともなって、各貯油室12内が減圧され、各
貯油室12が外気圧により変形・破損等されるのを防止す
ることができるようにしている。In this way, when the aircraft fuel in the oil storage chamber 12 is supplied into the fuel tank of the aircraft, the forced opening valves 19 are connected to the tips of the branch pipes 40a to force the forced opening. By operating the valves 19 to open so that the insides of the oil storage chambers 12 communicate with the outside air, the internal pressure of the oil storage chambers 12 is reduced as the aircraft fuel oil flows into the oil storage chambers 12, and the oil storage chambers 12 are closed. It is designed to prevent deformation and damage due to atmospheric pressure.
【００１６】上記のような構成において、本発明の要旨
は、各貯油室12内に設けた液面検出装置15の構造にあ
り、以下に同液面検出装置15の構造について説明する。In the above structure, the gist of the present invention resides in the structure of the liquid level detecting device 15 provided in each oil storage chamber 12, and the structure of the liquid level detecting device 15 will be described below.
【００１７】すなわち、液面検出装置15は、図１に示す
ように、各貯油室12内の略中央部に配置しており、図４
に示すように、マンホール蓋14に、上下方向に伸延する
円筒状のセンサ収容ケース45の上端部を取付用リング46
を介して取付けると共に、直下方へ向けて垂下させた同
センサ収容ケース45の下端をタンク本体10の底部10bに
固定した底蓋体47に嵌合して当接させ、取付用リング46
にセンサ取付体48を着脱自在に取付け、同センサ取付体
48に、液面レベルの上限を検出する上限レベルセンサ49
と、液面レベルの下限を検出する下限レベルセンサ50と
を取付けて構成している。That is, as shown in FIG. 1, the liquid level detecting device 15 is arranged at a substantially central portion in each oil storage chamber 12, and
As shown in FIG. 4, the manhole cover 14 is provided with a ring 46 for mounting an upper end of a cylindrical sensor housing case 45 extending vertically.
And the lower end of the sensor housing case 45 hung vertically downward is fitted and brought into contact with the bottom lid body 47 fixed to the bottom portion 10b of the tank body 10, and the mounting ring 46 is attached.
Removably attach the sensor mount 48 to the
Upper limit level sensor 49 that detects the upper limit of the liquid level
And a lower limit level sensor 50 that detects the lower limit of the liquid level.
【００１８】そして、センサ収容ケース45には、図４に
示すように、連通部としての連通孔51を複数形成して、
各連通孔51を通してセンサ収容ケース45内と貯油室12内
とを連通させている。As shown in FIG. 4, the sensor housing case 45 is formed with a plurality of communication holes 51 as communication parts.
The inside of the sensor housing case 45 and the inside of the oil storage chamber 12 communicate with each other through the respective communication holes 51.
【００１９】また、上限レベルセンサ49は、図４に示す
ように、センサ取付体48に取付けたセンサ支持体52と、
同センサ支持体52の下端に取付けたセンサ本体53とから
形成しており、センサ支持体52は、センサ取付体48に上
下方向に伸延する外管52a の上端を取付け、同外管52a
中に上下方向に伸延する内管52b を締付けリング52cを
介して上下スライド位置調節自在に取付け、同内管52b
の下端にセンサ本体53を取付けている。As shown in FIG. 4, the upper limit level sensor 49 includes a sensor support 52 mounted on a sensor mounting body 48,
The sensor support body 52 is formed of a sensor main body 53 attached to the lower end of the sensor support body 52. The sensor support body 52 is formed by attaching the upper end of an outer tube 52a extending in the vertical direction to the sensor attachment body 48,
Attach the inner tube 52b that extends vertically inward through the tightening ring 52c so that the vertical slide position can be adjusted.
A sensor body 53 is attached to the lower end of the.
【００２０】このようにして、センサ本体53は、センサ
収容ケース45内の上部において、内管52b の上下スライ
ド量の範囲内で任意のセンシングレベルに上下位置調節
して配置することにより、あらかじめ設定した航空機燃
料油の油面の上限を確実に検出することができるように
しており、センサ本体53は、航空機燃料油より浮力を受
けると、制御部５に検出信号を通電して、同制御部５よ
り開放作動している開閉弁21,31 を閉塞作動させる制御
信号を送るようにしている。従って、貯油室12内への航
空機燃料油の補給は自動的に停止される。In this way, the sensor main body 53 is preset in the upper part of the sensor housing case 45 by adjusting the vertical position to an arbitrary sensing level within the range of the vertical slide amount of the inner tube 52b. The upper limit of the oil level of the aircraft fuel oil is reliably detected, and when the sensor body 53 receives the buoyancy force from the aircraft fuel oil, the sensor body 53 sends a detection signal to the controller 5 to cause the same. A control signal for closing the on-off valves 21 and 31 that are open from 5 is sent. Therefore, the replenishment of the aircraft fuel oil into the oil storage chamber 12 is automatically stopped.
【００２１】一方、下限レベルセンサ50は、図４に示す
ように、上限レベルセンサ49と同様に形成しており、セ
ンサ取付体48に取付けたセンサ支持体54と、同センサ支
持体54の下端に取付けたセンサ本体55とから形成してお
り、センサ支持体54は、センサ取付体48に上下方向に伸
延する外管54a の上端を取付け、同外管54a 中に上下方
向に伸延する内管54b を締付けリング54c を介して上下
スライド位置調節自在に取付け、同内管54b の下端にセ
ンサ本体55を取付けている。On the other hand, the lower limit level sensor 50 is formed in the same manner as the upper limit level sensor 49 as shown in FIG. 4, and the sensor support 54 attached to the sensor mount 48 and the lower end of the sensor support 54. The sensor support body 54 is attached to the sensor support body 54, and the sensor support body 54 has an upper end of an outer pipe 54a extending vertically, and the sensor support body 54 has an inner pipe extending vertically in the outer pipe 54a. 54b is attached via a tightening ring 54c so that the vertical slide position can be adjusted, and a sensor body 55 is attached to the lower end of the inner tube 54b.
【００２２】このようにして、センサ本体55は、センサ
収容ケース45内の下部において、内管54b の上下スライ
ド量の範囲内で任意のセンシングレベルに上下位置調節
して配置することにより、あらかじめ設定した航空機燃
料油の油面の下限を確実に検出することができるように
しており、センサ本体55は、航空機燃料油より受けてい
た浮力がなくなると、制御部５に検出信号を通電して、
同制御部５より閉塞作動している開閉弁21,31 を開放作
動させる制御信号を送るようにしている。従って、貯油
室12内には、燃料油供給源22より自動的に航空機燃料油
が随時補給されて、航空機の燃料タンク内に空給油する
ことにより生じる空気の混入を防止することができる。In this way, the sensor main body 55 is preset in the lower portion of the sensor housing case 45 by adjusting the vertical position to any sensing level within the range of the vertical slide amount of the inner tube 54b. The lower limit of the oil level of the aircraft fuel oil is reliably detected, and when the buoyancy received from the aircraft fuel oil disappears, the sensor body 55 energizes the control unit 5 with a detection signal,
The control unit 5 sends a control signal for opening the on-off valves 21, 31 which are closed. Therefore, the fuel oil supply source 22 automatically replenishes the fuel tank 12 with aviation fuel oil at any time, and it is possible to prevent air from being mixed due to empty fueling in the fuel tank of the aircraft.
【００２３】また、センサ取付体48は、取付用リング46
に取付ボルト71により着脱自在に取付けており、同取付
ボルト71を取外して、センサ取付体48を上方へ引上げる
ことにより、同センサ取付体48と一体的に上・下限レベ
ルセンサ49,50 をセンサ収容ケース45より取出すことが
できるようにして、各レベルセンサ49,50 のセンシング
レベルの上下位置調節やメンテナンス等を楽に行なうこ
とができるようにしている。なお、図４中、72は取付ボ
ルトである。Further, the sensor mounting body 48 includes a mounting ring 46.
The mounting bolts 71 are detachably attached to the upper and lower limit level sensors 49 and 50 integrally with the sensor mounting body 48 by removing the mounting bolts 71 and pulling up the sensor mounting body 48. The sensor housing case 45 can be taken out from the sensor housing case 45 so that the upper and lower positions of the sensing levels of the level sensors 49 and 50 can be easily adjusted and maintenance can be performed easily. In FIG. 4, 72 is a mounting bolt.
【００２４】本発明に係る液面検出装置15は、上記のよ
うに構成しているものであり、同液面検出装置15では、
各貯油室12内の略中央部に配置して、同液面検出装置15
のセンサ収容ケース45内と貯油室12内とを複数の連通孔
51を通して連通させているために、貯油室12内の航空機
燃料油の油面と、センサ収容ケース45内の航空機燃料油
の油面とを同一レベルに保つことができると共に、車体
が前低後高又は前高後低の傾斜姿勢にある場合にも、各
貯油室12内の略中央部において上・下限レベルセンサ4
9,50 が正確に油面を検出することができるようにして
いる。The liquid level detecting device 15 according to the present invention is constructed as described above, and in the liquid level detecting device 15,
The liquid level detection device 15 is arranged in the center of each oil storage chamber 12
Of the sensor housing case 45 and the oil storage chamber 12 are provided with a plurality of communication holes.
Since it is communicated through the 51, the oil level of the aircraft fuel oil in the oil storage chamber 12 and the oil level of the aircraft fuel oil in the sensor housing case 45 can be kept at the same level, and the vehicle body Even in the high or front high rear low tilted position, the upper and lower limit level sensors 4 are provided at approximately the center of each oil storage chamber 12.
It allows 9,50 to detect the oil level accurately.
【００２５】しかも、上・下限レベルセンサ49,50 は、
センサ収容ケース45内に配置しているために、車体の振
動により、貯油室12内の航空機燃料油の油面が大きく波
打った際にも、変化の小さいセンサ収容ケース45内の油
面を精度良く検出することができるようにしている。Moreover, the upper and lower limit level sensors 49, 50 are
Since the sensor housing case 45 is arranged in the sensor housing case 45, even if the oil level of the aircraft fuel oil in the oil storage chamber 12 is greatly corrugated due to the vibration of the vehicle body, the oil level in the sensor housing case 45 that is small is changed. It is possible to detect with high accuracy.
【００２６】また、センサ収容ケース45と、同センサ収
容ケース45の上端部をタンク本体10のマンホール蓋14に
接続しているセンサ取付体48と、センサ収容ケース45の
下端部をタンク本体10の底部10b に接続している底蓋体
47は、タンク本体10及びマンホール蓋14と同様にそれぞ
れ導電性素材により成形して、貯油室12内の航空機燃料
油に発生する静電気をタンク本体10の外部に除去するこ
とができるようにして、帯電を防止し、静電気による爆
発事故の防止を図っている。Further, the sensor housing case 45, the sensor mounting body 48 having the upper end portion of the sensor housing case 45 connected to the manhole cover 14 of the tank body 10, and the lower end portion of the sensor housing case 45 are connected to the tank body 10. Bottom lid connected to bottom 10b
47 is formed of a conductive material like the tank body 10 and the manhole cover 14, so that static electricity generated in the aircraft fuel oil in the oil storage chamber 12 can be removed to the outside of the tank body 10. Prevents electrostatic charge and prevents explosion accidents due to static electricity.
【００２７】計量尺16は、図４に示すように、上下方向
に伸延させて形成した計量尺本体16a と、同計量尺本体
16a の上端に取付けた把持部16b とから形成して、前記
液面検出装置15の近傍に配置しており、マンホール蓋14
に計量尺挿入孔60を形成し、同計量尺挿入孔60に上下方
向に伸延する筒状の計量尺収容ケース61の上端を連通連
結すると共に、タンク本体10の底部10b に固定した接続
体63に同計量尺収容ケース61の下端を着脱自在に接続
し、同計量尺収容ケース61内に計量尺本体16a を計量尺
挿入孔60より出入れ自在に挿入し、把持部16b をマンホ
ール蓋14の上面に係止させて、垂下させた計量尺本体16
a の下端をタンク本体10の底部10b に当接させている。As shown in FIG. 4, the measuring scale 16 includes a measuring scale main body 16a formed by extending in the vertical direction and a measuring scale main body 16a.
It is formed from a gripping part 16b attached to the upper end of 16a, and is arranged in the vicinity of the liquid level detection device 15, and the manhole cover 14
A measuring scale insertion hole 60 is formed in the measuring scale insertion hole 60, and the upper end of a cylindrical measuring scale storage case 61 extending vertically is connected to the measuring scale insertion hole 60 and is connected to the bottom portion 10b of the tank body 10 to connect the connecting body 63. , The lower end of the measuring scale storage case 61 is detachably connected, the measuring scale body 16a is inserted into the measuring scale storage case 61 through the measuring scale insertion hole 60, and the grip 16b is attached to the manhole cover 14. The measuring scale main body 16 that is hooked to the upper surface and hung down
The lower end of a is brought into contact with the bottom portion 10b of the tank body 10.
【００２８】そして、計量尺収容ケース61には複数の連
通孔62を形成して、同計量尺収容ケース61内と貯油室12
内とを連通させている。A plurality of communication holes 62 are formed in the measuring scale accommodating case 61, and the inside of the measuring scale accommodating case 61 and the oil storage chamber 12 are formed.
It communicates with the inside.
【００２９】このようにして、計量尺16は、貯油室12内
の略中央部に配置した液面検出装置15の近傍に配置し
て、同液面検出装置15と同様に車体の傾斜姿勢や貯油室
12内の航空機燃料油の波打ち現象等から受ける悪影響を
少なくして、正確な計量が行なえるようにしている。In this way, the measuring scale 16 is arranged in the vicinity of the liquid level detecting device 15 arranged substantially in the center of the oil storage chamber 12, and like the liquid level detecting device 15, the inclination posture of the vehicle body and Oil storage room
Accurate weighing can be performed by reducing the adverse effects of the waving phenomenon of the aircraft fuel oil within 12.
【００３０】また、マンホール蓋14は、タンク本体10の
天井壁10a に形成したマンホール13に取付用リング65を
介して取付ボルト70により着脱自在に取付けており、マ
ンホール蓋14を取外すことにより、同マンホール蓋14に
取付けている液面検出装置15と計量尺16と計量尺収容ケ
ース61とを一体的にタンク本体10より取外すことができ
るようにしている。Further, the manhole cover 14 is detachably attached to the manhole 13 formed on the ceiling wall 10a of the tank body 10 with a mounting bolt 70 via a mounting ring 65. By removing the manhole cover 14, The liquid level detection device 15, the measuring scale 16 and the measuring scale housing case 61 attached to the manhole cover 14 can be integrally removed from the tank body 10.
【００３１】このようにして、液面検出装置15と計量尺
16と計量尺収容ケース61の全体的なメンテナンス等を楽
に行なうことができるようにしている。In this way, the liquid level detection device 15 and the measuring scale are
The overall maintenance of the 16 and the measuring scale accommodation case 61 is facilitated.
【００３２】この際、液面検出装置15は、センサ収容ケ
ース45の下端が当接していた底蓋体47より離れ、また、
計量尺収容ケース61の下端が嵌入して接続していた接続
体63より離れて、これらを容易に取外すことができる一
方、再度取付ける場合にも、各下端を容易に当接又は嵌
入して接続することができる。At this time, the liquid level detection device 15 is separated from the bottom cover 47 with which the lower end of the sensor housing case 45 is in contact, and
The lower end of the measuring scale accommodating case 61 is separated from the connecting body 63 which was fitted and connected, and these can be easily removed, while the lower ends are easily abutted or fitted and connected when reattached. can do.
【００３３】また、計量尺収容ケース61と、同計量尺収
容ケース61の下端部をタンク本体10の底部10b に接続し
ている接続体63は、タンク本体10及びマンホール蓋14と
同様にそれぞれ導電性素材により成形して、貯油室12内
の航空機燃料油に発生する静電気をタンク本体10の外部
に除去することができるようにして、帯電を防止し、静
電気による爆発事故の防止を図っている。Further, the weighing scale housing case 61 and the connecting body 63 connecting the lower end portion of the weighing scale housing case 61 to the bottom portion 10b of the tank body 10 are electrically conductive similarly to the tank body 10 and the manhole cover 14, respectively. It is made of a flexible material so that static electricity generated in aircraft fuel oil in the oil storage chamber 12 can be removed to the outside of the tank body 10 to prevent electrostatic charge and prevent explosion accidents due to static electricity. .
【００３４】安全弁37は、貯油室12内の圧力が一定値
（たとえば、0.05kg／ｃｍ2 ) 以下に減圧されると、閉
弁用スプリングにより閉弁されている弁体が、同閉弁用
スプリングの押圧付勢力に抗して開弁動作して、貯油室
12内と外気とを自動的に連通させることができるように
構成している。When the pressure inside the oil storage chamber 12 is reduced to a constant value (eg, 0.05 kg / cm 2 ) or less, the safety valve 37 has the valve body closed by the valve closing spring. Open the valve against the biasing force of the spring,
It is configured so that the inside and outside air can automatically communicate with each other.
【００３５】このようにして、給油作業時以外に貯油室
12内が減圧された場合にも、同貯油室12内の内壁等が外
気圧により変形・損傷等されないようにしている。In this way, the oil storage chamber is used except during the refueling work.
Even when the inside of the oil storage chamber 12 is depressurized, the inner wall of the oil storage chamber 12 is prevented from being deformed or damaged by the outside air pressure.
【００３６】制御部５は、入力側に液面検出装置15の上
・下限レベルセンサ49,50 と流量計36とを接続する一
方、出力側に給油ポンプＰの駆動部、第一・第二三方弁
25,28、各開閉弁21,31,32,33,34,35 の駆動部をそれぞ
れ接続して、各駆動部を制御可能としている。The control unit 5 connects the upper and lower limit level sensors 49, 50 and the flow meter 36 to the input side, while the drive unit of the refueling pump P, the first and second levels, is connected to the output side. Three-way valve
The drive units of 25, 28 and the on-off valves 21, 31, 32, 33, 34, 35 are connected to each other so that each drive unit can be controlled.
【００３７】図５は、第二実施例としての液面検出装置
15を示しており、同液面検出装置15では、センサ収容ケ
ース45内の上部で、上限レベルセンサ49よりも上方位置
に上限レベルセンサ49をバックアップするためのバック
アップセンサ75を設けている。FIG. 5 shows a liquid level detecting device as a second embodiment.
15 shows the liquid level detection device 15, and a backup sensor 75 for backing up the upper limit level sensor 49 is provided above the upper limit level sensor 49 in the upper part of the sensor housing case 45.
【００３８】そして、バックアップセンサ75は、図５に
示すように上限レベルセンサ49と同様に形成しており、
センサ取付体48に取付けたセンサ支持体76と、同センサ
支持体76の下端に取付けたセンサ本体77とから形成して
おり、センサ支持体76は、センサ取付体48に上下方向に
伸延する外管76a の上端を取付け、同外管76a 中に上下
方向に伸延する内管76b を締付けリング76c を介して上
下スライド位置調節自在に取付け、同内管76b の下端に
センサ本体77を取付けている。The backup sensor 75 is formed similarly to the upper limit level sensor 49 as shown in FIG.
It is composed of a sensor support 76 attached to the sensor mount 48 and a sensor main body 77 attached to the lower end of the sensor support 76. The sensor support 76 extends outside the sensor mount 48 in the vertical direction. The upper end of the pipe 76a is attached, the inner pipe 76b extending vertically in the outer pipe 76a is attached via the tightening ring 76c so that the vertical slide position can be adjusted, and the sensor body 77 is attached to the lower end of the inner pipe 76b. .
【００３９】このようにして、センサ本体77は、センサ
収容ケース45内の上部において、内管76b の上下スライ
ド量の範囲内で少なくとも上限レベルセンサ49のセンサ
本体53よりも上方に位置するセンシングレベルに上下位
置調節して配置することにより、上限レベルセンサ49が
何らかの故障等により、センシング機能を果さない場合
には、同センサ本体77が航空機燃料油の油面を確実に検
出することができるようにしており、センサ本体77は、
航空機燃料油より浮力を受けると、制御部５に検出信号
を通電して、同制御部５より開放作動している開閉弁2
1,31 を閉塞作動させる制御信号を送るようにしてい
る。従って、貯油室12内への航空機燃料油の自動補給停
止をより確実に行なうことができて、上限レベルセンサ
49の不慮の故障等にも対応できるようにしている。In this way, the sensor body 77 is located above the sensor body 53 in the upper part of the sensor housing case 45 at least above the sensor body 53 of the upper limit level sensor 49 within the range of the vertical slide amount of the inner tube 76b. If the upper limit level sensor 49 does not perform the sensing function due to some failure or the like, the sensor main body 77 can surely detect the oil level of the aircraft fuel oil by arranging the upper and lower positions in the upper position. The sensor body 77 is
When the buoyancy force is received from the aircraft fuel oil, the control unit 5 is energized with a detection signal, and the control unit 5 opens and closes the on-off valve 2
A control signal for closing the 1,31 is activated. Therefore, the automatic replenishment of the aircraft fuel oil into the oil storage chamber 12 can be more reliably stopped, and the upper limit level sensor
It is designed to handle 49 accidental failures.
【００４０】また、上記した液面検出装置15では、セン
サ収容ケース45内に下限レベルセンサ50を設けていない
が、第一実施例としての液面検出装置15と同様に下限レ
ベルセンサ50を設けて、上限レベルセンサ49による液面
の上限レベルの検出と、下限レベルセンサ50による液面
の下限レベルの検出と、バックアップセンサ75による上
限レベルセンサ49のバックアップ検出が行なえるように
することもできる。Further, in the liquid level detecting device 15 described above, the lower limit level sensor 50 is not provided in the sensor housing case 45, but the lower limit level sensor 50 is provided like the liquid level detecting device 15 as the first embodiment. The upper limit level sensor 49 can detect the upper limit level of the liquid surface, the lower limit level sensor 50 can detect the lower limit level of the liquid level, and the backup sensor 75 can detect the backup of the upper limit level sensor 49. .
【００４１】なお、本実施例では、液体輸送車両として
の航空機給油車Ａについて説明してきたが、他に液体を
輸送するための貯液タンクを具備するものであれば、本
発明に係る液面検出装置15を適用することができる。Although the aircraft refueling vehicle A as a liquid transport vehicle has been described in this embodiment, the liquid level according to the present invention may be used as long as it has a liquid storage tank for transporting the liquid. The detection device 15 can be applied.
【００４２】[0042]
【発明の効果】本発明によれば、次のような効果が得ら
れる。According to the present invention, the following effects can be obtained.
【００４３】 請求項１記載の本発明では、貯液室の
略中央部に上下方向に伸延する筒状のセンサ収容ケース
を架設し、同センサ収容ケース内と貯液室内とを連通部
を介して連通させ、同センサ収容ケース内の上部に液面
レベルの上限を検出する上限レベルセンサを設けている
ために、同上限レベルセンサにより貯液室内の液面を、
車体の傾斜姿勢の影響が少ない貯液室の略中央部位置に
てセンシングすることができ、正確な液面検出結果にも
とづいて精度良く貯液室内への補給停止を行なうことが
できる。According to the first aspect of the present invention, a cylindrical sensor accommodating case extending in the vertical direction is provided at a substantially central portion of the liquid accumulating chamber, and the inside of the sensor accommodating case and the liquid accumulating chamber are connected via a communicating portion. Since the upper limit level sensor for detecting the upper limit of the liquid level is provided in the upper part of the sensor housing case, the liquid level in the liquid storage chamber is
It is possible to perform sensing at a position substantially in the center of the liquid storage chamber, which is less affected by the leaning posture of the vehicle body, and it is possible to accurately stop the replenishment into the liquid storage chamber based on the accurate liquid level detection result.
【００４４】この際、上限レベルセンサは、貯液室内と
連通部を介して連通しているセンサ収容ケース内に設け
ているために、貯液室が外部から受ける振動により、同
貯液室内の液面が波打っている場合にも、その影響を受
けにくいセンサ収容ケース内の液面を精度良く検出する
ことができる。At this time, since the upper limit level sensor is provided in the sensor housing case that communicates with the liquid storage chamber through the communication portion, the liquid storage chamber is oscillated by the outside, and the upper limit level sensor is placed in the liquid storage chamber. Even when the liquid surface is wavy, it is possible to accurately detect the liquid surface in the sensor housing case, which is less susceptible to the effect.
【００４５】 請求項２記載の本発明では、センサ収
容ケース内の下部に液面レベルの下限を検出する下限レ
ベルセンサを設けているために、同下限レベルセンサに
より貯液室内の液面を、車体の傾斜姿勢の影響が少ない
貯液室の略中央部位置にてセンシングすることができ、
正確な液面検出結果にもとづいて精度良く貯液室内への
補給開始を行なうことができる。According to the second aspect of the present invention, since the lower limit level sensor for detecting the lower limit of the liquid level is provided in the lower portion of the sensor housing case, the lower limit level sensor is used to detect the liquid level in the liquid storage chamber. Sensing can be performed at the approximate center position of the liquid storage chamber, which is less affected by the leaning posture of the vehicle body.
It is possible to accurately start the replenishment into the liquid storage chamber based on the accurate liquid level detection result.
【００４６】この際、下限レベルセンサは、貯液室内と
連通部を介して連通しているセンサ収容ケース内に設け
ているために、貯液室が外部から受ける振動により、同
貯液室内の液面が波打っている場合にも、その影響を受
けにくいセンサ収容ケース内の液面を精度良く検出する
ことができる。At this time, since the lower limit level sensor is provided in the sensor housing case which communicates with the liquid storage chamber via the communicating portion, the liquid storage chamber is internally oscillated by the vibrations received from the outside. Even when the liquid surface is wavy, it is possible to accurately detect the liquid surface in the sensor housing case, which is less susceptible to the effect.
【００４７】 請求項３記載の本発明では、センサ収
容ケース内の上部で、上限レベルセンサよりも上方位置
に、上限レベルセンサバックアップ用のバックアップセ
ンサを設けているために、上限レベルセンサが何らかの
故障等によりセンシング機能を果さない場合には、同バ
ックアップセンサが液面を検出して、同検出結果にもと
づいて確実に貯液室内への補給停止を行なうことができ
る。According to the third aspect of the present invention, since the backup sensor for backing up the upper limit level sensor is provided above the upper limit level sensor in the upper portion of the sensor housing case, the upper limit level sensor may fail. When the sensing function is not achieved due to the above reasons, the backup sensor can detect the liquid surface and reliably stop the replenishment into the liquid storage chamber based on the detection result.
【００４８】 請求項４記載の本発明では、各センサ
を、上下方向に位置調節自在としているために、貯液室
内に貯留する液体の種類やタンクの容積等に適応させる
べく液面の検出レベルを適宜変更することができて、液
面検出精度を良好に確保することができる。According to the present invention as set forth in claim 4, since the position of each sensor is adjustable in the vertical direction, the detection level of the liquid level is adapted to the type of liquid stored in the liquid storage chamber, the volume of the tank, and the like. Can be changed appropriately, and the liquid level detection accuracy can be secured satisfactorily.
【図１】本発明に係る液面検出装置を具備する航空機給
油車の側面図。FIG. 1 is a side view of an aircraft refueling vehicle equipped with a liquid level detection device according to the present invention.
【図２】同航空機給油車の平面図。FIG. 2 is a plan view of the aircraft refueling vehicle.
【図３】給油配管説明図。FIG. 3 is an explanatory view of oil supply piping.
【図４】液面検出装置の断面正面図。FIG. 4 is a sectional front view of the liquid level detection device.
【図５】第二実施例としての液面検出装置の断面正面
図。FIG. 5 is a sectional front view of a liquid level detection device as a second embodiment.
Ａ 航空機給油車 １ 車体フレーム ２ 運転部 ３ 給油作業部 ４ 貯油タンク ５ 制御部 15 液面検出装置 19 強制開放弁 A Aircraft Refueling Vehicle 1 Body Frame 2 Driving Section 3 Refueling Working Section 4 Oil Storage Tank 5 Control Section 15 Liquid Level Detector 19 Forced Open Valve
Claims (4)
筒状のセンサ収容ケースを架設し、同センサ収容ケース
内と貯液タンク内とを連通部を介して連通させ、同セン
サ収容ケース内の上部に液面レベルの上限を検出する上
限レベルセンサを設けたことを特徴とする液体輸送車両
の液面検出装置。1. A sensor housing case having a cylindrical shape extending in the vertical direction is installed at a substantially central portion of the liquid storage chamber, and the inside of the sensor housing case and the inside of the liquid storage tank are communicated with each other through a communication portion, and the sensor is provided. A liquid level detection device for a liquid transportation vehicle, comprising an upper limit level sensor for detecting an upper limit of the liquid level in the upper part of the housing case.
の下限を検出する下限レベルセンサを設けたことを特徴
とする請求項１記載の液体輸送車両の液面検出装置。2. The liquid level detection device for a liquid transportation vehicle according to claim 1, wherein a lower limit level sensor for detecting a lower limit of the liquid level is provided in a lower portion of the sensor housing case.
ルセンサよりも上方位置に、上限レベルセンサバックア
ップ用のバックアップセンサを設けたことを特徴とする
請求項１又は２記載の液体輸送車両の液面検出装置。3. The liquid of a liquid transportation vehicle according to claim 1, wherein a backup sensor for backing up the upper limit level sensor is provided above the upper limit level sensor in the upper part of the sensor housing case. Surface detection device.
したことを特徴とする請求項１〜３のいずれかに記載の
液体輸送車両の液面検出装置。4. The liquid level detection device for a liquid transportation vehicle according to claim 1, wherein the position of each sensor is vertically adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02985595A JP3502177B2 (en) | 1995-02-17 | 1995-02-17 | Liquid level detection device for liquid transport vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02985595A JP3502177B2 (en) | 1995-02-17 | 1995-02-17 | Liquid level detection device for liquid transport vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08219852A true JPH08219852A (en) | 1996-08-30 |
| JP3502177B2 JP3502177B2 (en) | 2004-03-02 |
Family
ID=12287588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02985595A Expired - Fee Related JP3502177B2 (en) | 1995-02-17 | 1995-02-17 | Liquid level detection device for liquid transport vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3502177B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999024794A1 (en) * | 1997-11-06 | 1999-05-20 | Hendricks Behälterfahrzeugbau Gmbh & Co. Kg | Device for determining the contents of a tank chamber of a multi-chamber tank vehicle |
| JP2010077622A (en) * | 2008-09-24 | 2010-04-08 | Toshiba Mach Co Ltd | Hydraulic motor swinging unit in construction machine equipped with oil level detecting function |
| JP2013160653A (en) * | 2012-02-06 | 2013-08-19 | Fuso Sangyo Kk | Solid aggregate measuring apparatus |
| CN104773699A (en) * | 2015-02-13 | 2015-07-15 | 江苏新美星包装机械股份有限公司 | Liquid suction device with liquid level detection function |
| US20210213827A1 (en) * | 2020-01-10 | 2021-07-15 | John Sever | Fracking sensor probe |
-
1995
- 1995-02-17 JP JP02985595A patent/JP3502177B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999024794A1 (en) * | 1997-11-06 | 1999-05-20 | Hendricks Behälterfahrzeugbau Gmbh & Co. Kg | Device for determining the contents of a tank chamber of a multi-chamber tank vehicle |
| JP2010077622A (en) * | 2008-09-24 | 2010-04-08 | Toshiba Mach Co Ltd | Hydraulic motor swinging unit in construction machine equipped with oil level detecting function |
| JP2013160653A (en) * | 2012-02-06 | 2013-08-19 | Fuso Sangyo Kk | Solid aggregate measuring apparatus |
| CN104773699A (en) * | 2015-02-13 | 2015-07-15 | 江苏新美星包装机械股份有限公司 | Liquid suction device with liquid level detection function |
| US20210213827A1 (en) * | 2020-01-10 | 2021-07-15 | John Sever | Fracking sensor probe |
| US11667187B2 (en) * | 2020-01-10 | 2023-06-06 | Husky Corporation | Fracking sensor probe |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3502177B2 (en) | 2004-03-02 |
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