JPH1089257A - Filler for natural gas automobile - Google Patents
Filler for natural gas automobileInfo
- Publication number
- JPH1089257A JPH1089257A JP28580896A JP28580896A JPH1089257A JP H1089257 A JPH1089257 A JP H1089257A JP 28580896 A JP28580896 A JP 28580896A JP 28580896 A JP28580896 A JP 28580896A JP H1089257 A JPH1089257 A JP H1089257A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- dehumidifier
- natural gas
- compressor
- allowed
- 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.)
- Pending
Links
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】この発明は、天然ガス自動車
のボンベに燃料ガスを充填する天然ガス自動車用充填機
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a natural gas vehicle filling machine for filling a cylinder of a natural gas vehicle with fuel gas.
【0002】[0002]
【従来の技術】近年、化石燃料の中で最も低公害な自動
車用燃料として天然ガスが注目され、これを燃料とする
天然ガス自動車が実用化されている。この天然ガス自動
車に燃料ガスを充填する充填機は、機内に搭載した圧縮
機で供給ガスを昇圧、液化し、天然ガス自動車のボンベ
に充填するもので、充填能力の大きな業務用から家庭用
のガス栓にも接続可能な小型のものまで、用途に応じて
充填能力の異なるものが提供されている。2. Description of the Related Art In recent years, natural gas has attracted attention as the lowest-pollution automotive fuel among fossil fuels, and natural gas vehicles using this fuel have been put to practical use. The filling machine that fills this natural gas vehicle with fuel gas pressurizes and liquefies the supply gas with a compressor mounted inside the machine and fills it into the cylinder of the natural gas vehicle. There have been provided ones having different filling capacities depending on the use, including small ones that can also be connected to gas stoppers.
【0003】[0003]
【発明が解決しようとする課題】しかし、かかる天然ガ
ス自動車に搭載のボンベには充填ガス中に含まれる水分
許容量が設定されており、水分を含んだままのガスの充
填は、充填機内部の部品や流通路に結露が生じるなどの
問題もあり、いずれにしても好ましくない。However, the cylinder mounted on such a natural gas vehicle is set with an allowable amount of moisture contained in the filling gas, and the filling of the gas containing moisture is performed inside the filling machine. However, there is also a problem that dew condensation occurs in the parts and the flow passages, and it is not preferable in any case.
【0004】この発明は、こうした課題を解決すること
を目的とするもので、供給ガス中の水分を除去する脱湿
器を充填機に設け、あらかじめ水分を取り除いたガスを
圧縮機で昇圧し、天然ガス自動車のボンベに充填するよ
うに構成するものである。An object of the present invention is to solve such a problem. A dehumidifier for removing moisture in a supply gas is provided in a filling machine, and a gas from which moisture has been removed is pressurized by a compressor. It is configured to fill a cylinder of a natural gas vehicle.
【0005】[0005]
【課題を解決するための手段】この発明はかかる課題を
解決するため、機内に搭載した圧縮機で供給ガスを昇
圧、液化し、天然ガス自動車のボンベに充填する天然ガ
ス自動車用充填機において、ガス入口とガス出口を設け
て密閉容器状に形成し、容器本体内に乾燥剤を収納した
脱湿器を、圧縮機の低圧側の供給路に介設したことを特
徴とするものである。また、脱湿器を、ガス入口とガス
出口に又はガス出口のみに水分インジケータを設けて構
成し、また、容器本体の開口端を密閉するカバーを着脱
可能とし、乾燥剤を取り替え可能として構成するもので
ある。さらに、天然ガスに添加された付臭剤が乾燥剤で
すべて吸着されるのを防ぐため、ガス入口からガス出口
に直通するバイパス路を形成して脱湿器を構成するもの
である。以下に、この発明の実施の形態について図面を
用いて説明する。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a filling machine for a natural gas vehicle which pressurizes and liquefies a supply gas with a compressor mounted in the machine and fills a cylinder of the natural gas vehicle. A gas inlet and a gas outlet are provided to form a closed container, and a dehumidifier containing a desiccant in a container body is interposed in a supply path on a low pressure side of the compressor. In addition, the dehumidifier is configured by providing a moisture indicator at the gas inlet and the gas outlet or only at the gas outlet, and is configured such that a cover for closing the opening end of the container body is detachable and the desiccant can be replaced. Things. Furthermore, in order to prevent all the odorant added to the natural gas from being adsorbed by the desiccant, a dehumidifier is formed by forming a bypass path directly from the gas inlet to the gas outlet. Hereinafter, embodiments of the present invention will be described with reference to the drawings.
【0006】[0006]
【発明の実施の形態】図1に、この発明の天然ガス自動
車用充填機の全体の構成を示す。充填機(1)は、家庭
用のガス栓にも接続可能な小型のもので、機内にモータ
(3)で駆動される圧縮機(2)が搭載され、ガス供給
管に接続する接続口(4)から圧縮機(2)の吸入口に
至る低圧側の供給路aが形成されている。供給路aに遮
断弁(5)、逆止弁(6)が配管され、圧縮機(2)の
前段に調圧タンク(7)が設けられ、調圧タンク(7)
からガス放散口(8)に至る放出路bを形成して圧力安
全機構(9)が介設されている。圧縮機(2)の吐出口
から緊急分離カプラ(10)に至る高圧側の供給路cが
形成され、供給路cが途中で分岐して調圧タンク(7)
に戻る還流路d、eを形成し、還流路dに圧力安全機構
(11)が介設され、還流路eに遮断弁(12)が配管
されている。電力接続端子(14)から電力を供給さ
れ、各種の情報が入力されて充填機(1)の運転を制御
するコントローラ(15)が機内に搭載され、コントロ
ーラ(15)は、操作ボタンや表示パネルなどを設けた
操作盤(16)と電気的に接続されている。このコント
ローラ(15)に、供給路aの圧力を検知するセンサ
f、供給路cの圧力を検知するセンサg、モータ(3)
の温度を検知するセンサh、機内の雰囲気温度を検知す
るセンサiなどの情報が入力され、常時運転状況を監視
して遮断弁(5)、(12)の開閉、モータ(3)のオ
ン/オフを制御し、危険を回避するとともに異常時に運
転を停止するフエイルセーフに基づく安全機能が組み込
まれている。そして、圧縮機(2)の低圧側の供給路a
に脱湿器(20)が介設され、脱湿器(20)は、接続
口(4)と遮断弁(5)との間に配管されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the overall configuration of a natural gas vehicle filling machine according to the present invention. The filling machine (1) is a small-sized one that can be connected to a household gas tap, has a compressor (2) driven by a motor (3), and is connected to a gas supply pipe ( A supply path a on the low pressure side from 4) to the suction port of the compressor (2) is formed. A shutoff valve (5) and a check valve (6) are provided in the supply path a, and a pressure regulating tank (7) is provided in front of the compressor (2).
A pressure safety mechanism (9) is formed by forming a discharge path (b) from the gas discharge port (8) to the gas discharge port (8). A supply path c on the high pressure side from the discharge port of the compressor (2) to the emergency separation coupler (10) is formed, and the supply path c branches off in the middle and the pressure regulating tank (7).
Return paths d and e are formed. A pressure safety mechanism (11) is provided in the return path d, and a shutoff valve (12) is provided in the return path e. A controller (15) that is supplied with power from a power connection terminal (14) and receives various information to control the operation of the filling machine (1) is mounted in the machine. The controller (15) includes operation buttons and a display panel. It is electrically connected to an operation panel (16) provided with the above. The controller (15) includes a sensor f for detecting the pressure in the supply path a, a sensor g for detecting the pressure in the supply path c, and a motor (3).
Information such as a sensor h for detecting the temperature of the air conditioner and a sensor i for detecting the atmospheric temperature inside the machine is constantly monitored, and the operation status is constantly monitored to open / close the shutoff valves (5) and (12), and to turn on / off the motor (3). It incorporates a fail-safe safety function that controls turning off, avoids danger, and stops operation in the event of an abnormality. Then, the supply path a on the low pressure side of the compressor (2)
A dehumidifier (20) is interposed in the pipe, and the dehumidifier (20) is piped between the connection port (4) and the shut-off valve (5).
【0007】脱湿器(20)は図2、図3に示すように
構成され、所定の全長の円筒管状に形成した容器本体
(21)の上下開口端をカバー(22)、(24)で蓋
をして密閉し、縦長円柱形の密閉容器状に形成されてい
る。容器本体(21)の下部開口端には下カバー(2
2)が気密に接合され、上部開口端は、フランジ(2
3)に上カバー(24)を複数本のボルト(25)で締
結して密閉されている。したがって、ボルト(25)を
取り外して上カバー(24)を着脱することができるよ
うに構成されている。容器本体(21)の下端に近接し
た位置に入口継手(26)を接合してガス入口が形成さ
れ、上端に近接した位置に出口継手(27)を接合して
ガス出口が形成され、両継手(26)、(27)に、流
通ガス中の水分の有無を色素の変化で表示する水分イン
ジケータ(28)、(29)が取り付けられている。The dehumidifier (20) is constructed as shown in FIGS. 2 and 3, and covers the upper and lower open ends of a cylindrical main body (21) having a predetermined length with covers (22) and (24). It is sealed with a lid, and formed into a vertically long cylindrical closed container. A lower cover (2) is provided at the lower opening end of the container body (21).
2) are hermetically bonded, and the upper open end is a flange (2).
An upper cover (24) is fastened to 3) with a plurality of bolts (25) to be sealed. Therefore, the upper cover (24) can be attached and detached by removing the bolt (25). A gas inlet is formed by joining an inlet joint (26) at a position near the lower end of the container body (21), and a gas outlet is formed by joining an outlet joint (27) at a position near the upper end. (26) and (27) are provided with moisture indicators (28) and (29) for displaying the presence or absence of moisture in the flowing gas by a change in dye.
【0008】容器本体(21)内には、上下二枚の多孔
板(30)、(31)の間で挟持した所定の体積の乾燥
剤(32)が収納されている。両多孔板(30)、(3
1)は外周端を容器本体(21)の内周面に当接し、器
内底部に収納した所定の高さの多孔環状板(33)に下
側多孔板(30)を当接し、上側多孔板(31)と上カ
バー(24)との間にコイルバネ(34)を挿入して乾
燥剤(32)が保持されている。両多孔板(30)、
(31)と乾燥剤(32)を軸方向に貫通して軸心に導
管(35)が設けられ、ガスがこの導管(35)を通過
してガス入口からガス出口に直通するバイパス路が形成
されている。そして、下カバー(22)にブラケット
(36)を取り付けて脚部を形成し、脱湿器(20)を
固定することができるように構成されている。A desiccant (32) having a predetermined volume sandwiched between two upper and lower perforated plates (30) and (31) is stored in the container body (21). Double perforated plate (30), (3
1) The outer peripheral end is in contact with the inner peripheral surface of the container body (21), the lower porous plate (30) is in contact with the porous annular plate (33) having a predetermined height stored in the bottom of the vessel, A desiccant (32) is held by inserting a coil spring (34) between the plate (31) and the upper cover (24). Double perforated plate (30),
A conduit (35) is provided in the axial center through the (31) and the desiccant (32) in the axial direction, and a bypass passage is formed through which the gas passes through the conduit (35) and passes directly from the gas inlet to the gas outlet. Have been. The bracket (36) is attached to the lower cover (22) to form a leg portion, and the dehumidifier (20) can be fixed.
【0009】この充填機(1)は、接続口(4)をガス
供給管に接続し、一端を緊急分離カプラ(10)に連結
した接続ホース(18)の他端を、天然ガス自動車のボ
ンベの接続口に連結し、運転スイッチの投入で運転を開
始する。供給路aに供給されたガスは脱湿器(20)に
至り、入口継手(26)から器内下層に流入する。そし
て、乾燥剤(32)を通過する過程で水分が吸着されて
器内上層に至り、出口継手(27)から供給路aへ流通
する。また、少量のガスが導管(35)のバイパス路を
通過して出口継手(27)から供給路aへ流通する。こ
の脱湿器(20)において、流通ガス中の水分の有無が
ガス入口とガス出口の水分インジケータ(28)、(2
9)の色素変化で表示され、水分が除去されずに乾燥剤
(32)の吸着能力の低下がガス出口の水分インジケー
タ(29)で示されたら、上カバー(24)を取り外し
て乾燥剤(32)を新たなものと取り替えて使用する。In this filling machine (1), a connection port (4) is connected to a gas supply pipe, and one end of a connection hose (18) connected to one end of an emergency separation coupler (10) is connected to a cylinder of a natural gas vehicle. And start operation by turning on the operation switch. The gas supplied to the supply path a reaches the dehumidifier (20) and flows into the lower part of the chamber from the inlet joint (26). Then, in the process of passing through the desiccant (32), moisture is adsorbed, reaches the upper layer in the vessel, and flows from the outlet joint (27) to the supply path a. Also, a small amount of gas passes through the bypass passage of the conduit (35) and flows from the outlet joint (27) to the supply passage a. In this dehumidifier (20), the presence or absence of moisture in the flowing gas is determined by the moisture indicators (28), (2) at the gas inlet and gas outlet.
If the moisture change is indicated by the pigment change in 9) and the moisture is not removed and the adsorption capacity of the desiccant (32) is reduced by the moisture indicator (29) at the gas outlet, the upper cover (24) is removed and the desiccant (32) is removed. 32) is replaced with a new one.
【0010】脱湿器(20)で乾燥された供給ガスは、
調圧タンク(7)から圧縮機(2)に吸引され、圧縮機
(2)で昇圧、液化されて吐出し、供給路cから緊急分
離カプラ(10)を経て接続ホース(18)から天然ガ
ス自動車のボンベに充填される。The feed gas dried in the dehumidifier (20) is
The natural gas is sucked from the pressure regulating tank (7) into the compressor (2), pressurized and liquefied by the compressor (2), discharged, and supplied from the connection hose (18) via the emergency separating coupler (10) from the supply path c. Filled into car cylinders.
【0011】図4に示した脱湿器(20a)は他の実施
例で、より簡素化して構成したものである。本例におい
て、脱湿器(20a)は、所定の全長の円筒管状に形成
した容器本体(21)の下部開口端に下カバー(2
2)、上部開口端に上カバー(24)を気密に接合して
密閉容器状に形成され、上カバー(24)に入口継手
(26)、下カバー(22)に出口継手(27)を取り
付けてガス入口、ガス出口が形成されている。そして、
上下二枚の多孔板(30)、(31)の間に挟持した乾
燥剤(32)が容器本体(21)内に収納され、両多孔
板(30)、(31)は外周端を容器本体(21)の内
周面に当接し、上側多孔板(31)と上カバー(24)
との間にコイルバネ(34)を挿入して乾燥剤(32)
が保持されている。The dehumidifier (20a) shown in FIG. 4 is another embodiment, which is more simplified. In this example, the dehumidifier (20a) is provided with a lower cover (2) at the lower opening end of a container body (21) formed in a cylindrical tube having a predetermined overall length.
2) The upper cover (24) is air-tightly joined to the upper open end to form an airtight container, and an inlet joint (26) is attached to the upper cover (24) and an outlet joint (27) is attached to the lower cover (22). A gas inlet and a gas outlet are formed. And
The desiccant (32) sandwiched between the upper and lower two perforated plates (30) and (31) is stored in the container body (21), and the outer peripheries of the two perforated plates (30) and (31) are set to the container body. The upper perforated plate (31) and the upper cover (24) abut against the inner peripheral surface of (21).
Insert a coil spring (34) between the desiccant (32)
Is held.
【0012】この脱湿器(20a)は、同じく圧縮機
(2)の低圧側の供給路aに介設し、入口継手(26)
から器内上層に流入した供給ガスは、乾燥剤(32)を
通過する過程で水分が吸着されて器内下層に至り、出口
継手(27)から供給路aへ流通し、圧縮機(2)に吸
引される。そして、所定の運転時間を経過した後又は定
期的に、脱湿器(20a)ごと交換して使用するもので
ある。The dehumidifier (20a) is also provided in the supply path (a) on the low pressure side of the compressor (2), and has an inlet joint (26).
In the process of passing through the desiccant (32), the supply gas that has flowed into the upper layer of the vessel absorbs moisture and reaches the lower layer of the vessel, flows from the outlet joint (27) to the supply path a, and flows into the compressor (2). Is sucked. Then, after a predetermined operation time has elapsed or periodically, the entire dehumidifier (20a) is replaced and used.
【0013】[0013]
【発明の効果】この発明の特徴的な効果は次の諸点であ
る。容器本体(21)内に乾燥剤(32)を収納した脱
湿器(20)を、圧縮機(2)の低圧側の供給路aに介
設し、脱湿器(20)を通過する過程であらかじめ供給
ガス中の水分を除去し、充填機(1)内部の部品や流通
路における結露の発生を防止するとともに、乾燥ガスを
圧縮機(2)で昇圧、液化して天然ガス自動車のボンベ
に充填し、充填ガスがボンベの水分許容量を超過するこ
とを防止することができるものである。The characteristic effects of the present invention are as follows. A process in which a dehumidifier (20) containing a desiccant (32) in a container body (21) is interposed in a supply path a on the low pressure side of the compressor (2) and passes through the dehumidifier (20). Removes moisture in the supply gas in advance to prevent dew condensation in the components and flow passages inside the filling machine (1), and pressurizes and liquefies the dry gas in the compressor (2) to liquefy the gas in the cylinder of a natural gas vehicle. To prevent the filling gas from exceeding the water allowance of the cylinder.
【0014】また、ガス入口とガス出口に又はガス出口
のみに水分インジケータ(28)、(29)を設けて脱
湿器(20)を構成し、流通ガス中の水分の有無を水分
インジケータ(28)、(29)で表示し、出口側の水
分インジケータ(29)で乾燥剤(32)の吸着能力の
低下を検知することができる。そして、容器本体(2
1)の開口端を密閉するカバー(24)を着脱可能と
し、乾燥剤(32)を取り替え可能として脱湿器(2
0)を構成し、乾燥剤(32)だけを簡単に交換して使
用することができるものである。A moisture indicator (28), (29) is provided at the gas inlet and the gas outlet or only at the gas outlet to constitute a dehumidifier (20), and the presence or absence of moisture in the flowing gas is determined by the moisture indicator (28). ) And (29), and the moisture indicator (29) on the outlet side can detect a decrease in the adsorption capacity of the desiccant (32). And the container body (2
The cover (24) for sealing the open end of 1) is detachable, and the desiccant (32) is replaceable so that the dehumidifier (2) can be replaced.
0), and only the desiccant (32) can be easily replaced and used.
【0015】また、天然ガスに添加される付臭剤は、水
分とともに乾燥剤(32)に吸着されるが、ガス入口か
らガス出口に直通するバイパス路を形成し、少量のガス
が乾燥剤(32)をパスして通過するように脱湿器(2
0)を構成し、脱湿器(20)を通過したガス中に付臭
剤を残留させて安全に使用することができるものであ
る。The odorant added to the natural gas is adsorbed by the desiccant (32) together with the moisture, but forms a bypass which passes directly from the gas inlet to the gas outlet. 32) so that it passes through the dehumidifier (2)
0), and the odorant can be left safely in the gas passed through the dehumidifier (20) and used safely.
【図1】この発明の全体構成図。FIG. 1 is an overall configuration diagram of the present invention.
【図2】脱湿器の平面図。FIG. 2 is a plan view of a dehumidifier.
【図3】図2のA−A線断面図。FIG. 3 is a sectional view taken along line AA of FIG. 2;
【図4】他の脱湿器の断面図。FIG. 4 is a cross-sectional view of another dehumidifier.
a 低圧側の供給路 2 圧縮機 20 脱湿器 21 容器本体 24 カバー 28 水分インジケータ 29 水分インジケータ 32 乾燥剤 a Low pressure side supply path 2 Compressor 20 Dehumidifier 21 Container body 24 Cover 28 Moisture indicator 29 Moisture indicator 32 Desiccant
Claims (4)
を昇圧、液化し、天然ガス自動車のボンベに充填する天
然ガス自動車用充填機において、 ガス入口とガス出口を設けて密閉容器状に形成し、容器
本体(21)内に乾燥剤(32)を収納した脱湿器(2
0)を、圧縮機(2)の低圧側の供給路aに介設したこ
とを特徴とする天然ガス自動車用充填機。1. A natural gas vehicle filling machine in which a supply gas is pressurized and liquefied by a compressor (2) mounted in the machine and filled into a cylinder of a natural gas vehicle. And a dehumidifier (2) containing a desiccant (32) in a container body (21).
0) is provided in the supply path a on the low pressure side of the compressor (2).
に水分インジケータ(28)、(29)を設けて脱湿器
(20)を構成した請求項1記載の天然ガス自動車用充
填機。2. The filling machine for a natural gas vehicle according to claim 1, wherein moisture indicators (28) and (29) are provided at the gas inlet and the gas outlet or only at the gas outlet to constitute the dehumidifier (20).
バー(24)を着脱可能とし、乾燥剤(32)を取り替
え可能として脱湿器(20)を構成した請求項1又は2
記載の天然ガス自動車用充填機。3. A dehumidifier (20) comprising a removable cover (24) for sealing the open end of the container body (21) and a replaceable desiccant (32).
A filling machine for a natural gas vehicle as described in the above.
ス路を形成して脱湿器(20)を構成した請求項1、2
又は3記載の天然ガス自動車用充填機。4. A dehumidifier according to claim 1, wherein a bypass path is formed directly from the gas inlet to the gas outlet.
Or the filling machine for natural gas vehicles according to 3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28580896A JPH1089257A (en) | 1996-09-20 | 1996-09-20 | Filler for natural gas automobile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28580896A JPH1089257A (en) | 1996-09-20 | 1996-09-20 | Filler for natural gas automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH1089257A true JPH1089257A (en) | 1998-04-07 |
Family
ID=17696361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28580896A Pending JPH1089257A (en) | 1996-09-20 | 1996-09-20 | Filler for natural gas automobile |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH1089257A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001221428A (en) * | 2000-02-03 | 2001-08-17 | Keiyo Gas Kk | Monitor for water content in gas |
WO2008136119A1 (en) * | 2007-04-26 | 2008-11-13 | Hitachi, Ltd. | Gas turbine utilizing cold heat of lng and operating method of gas turbine utilizing cold heat of lng |
-
1996
- 1996-09-20 JP JP28580896A patent/JPH1089257A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001221428A (en) * | 2000-02-03 | 2001-08-17 | Keiyo Gas Kk | Monitor for water content in gas |
WO2008136119A1 (en) * | 2007-04-26 | 2008-11-13 | Hitachi, Ltd. | Gas turbine utilizing cold heat of lng and operating method of gas turbine utilizing cold heat of lng |
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