JPS6229679B2 - - Google Patents
Info
- Publication number
- JPS6229679B2 JPS6229679B2 JP12027877A JP12027877A JPS6229679B2 JP S6229679 B2 JPS6229679 B2 JP S6229679B2 JP 12027877 A JP12027877 A JP 12027877A JP 12027877 A JP12027877 A JP 12027877A JP S6229679 B2 JPS6229679 B2 JP S6229679B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- vaporizer
- accumulator
- pressure regulator
- liquefied gas
- 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.)
- Expired
Links
- 239000006200 vaporizer Substances 0.000 claims description 79
- 230000001105 regulatory effect Effects 0.000 claims description 36
- 238000009834 vaporization Methods 0.000 claims description 18
- 230000008016 vaporization Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
- F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
Description
【発明の詳細な説明】
本発明は、液化ガス気化設備の起動方法に係
り、特に圧力調節計を利用した液化ガス気化設備
の起動方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for starting liquefied gas vaporization equipment, and more particularly to a method for starting liquefied gas vaporization equipment using a pressure regulator.
まず、従来の液化ガス気化設備を第１図につい
て説明する。 First, a conventional liquefied gas vaporization equipment will be explained with reference to FIG.
第１図において、１は液化ガス貯蔵タンク、２
は液化ガスを気化する気化器、３は気化した液化
ガスを一時的に貯えるアキユムレータ、４はガス
の消費設備である。 In Figure 1, 1 is a liquefied gas storage tank, 2
3 is a vaporizer that vaporizes the liquefied gas, 3 is an accumulator that temporarily stores the vaporized liquefied gas, and 4 is gas consumption equipment.
貯蔵タンク１の流出口直近には遮断弁５が設け
られ、気化器２の流入口付近には気化器起動弁６
及び気化器圧力調整弁７が設けられている。貯蔵
タンク１から送り出された液化ガスは、これらの
弁５，６，７を通つて気化器２へ導入される。気
化器２で気化したガスの圧力は、気化器圧力調節
計８により一定になるように制御される。この気
化器圧力調節計８は、気化器２で出された圧力に
応じて気化器圧力調整弁７の開度を調整し、気化
器２へ供給される液化ガスの量を制御するもので
ある。気化器２の圧力が異常に高くなつたとき
は、気化器安全弁９が作動し、ガスを外部に放出
する。 A shutoff valve 5 is provided near the outlet of the storage tank 1, and a vaporizer start valve 6 is provided near the inlet of the vaporizer 2.
and a carburetor pressure regulating valve 7. Liquefied gas sent out from storage tank 1 is introduced into vaporizer 2 through these valves 5, 6, 7. The pressure of the gas vaporized in the vaporizer 2 is controlled to be constant by a vaporizer pressure controller 8. This vaporizer pressure regulator 8 adjusts the opening degree of the vaporizer pressure regulating valve 7 according to the pressure exerted by the vaporizer 2, and controls the amount of liquefied gas supplied to the vaporizer 2. . When the pressure in the vaporizer 2 becomes abnormally high, the vaporizer safety valve 9 operates to release the gas to the outside.
なお、気化器２へは、図示しない熱源から温度
調整弁１０を通して、液化ガスを気化するのに必
要な熱量が供給される。気化器２の温度は温度調
節計１１により一定になるように制御される。こ
の温度調節計１１は、気化器で検出された温度に
応じて温度調整弁１０の開度を調整し、気化器２
へ供給される熱量を制御するものである。 Note that the amount of heat necessary to vaporize the liquefied gas is supplied to the vaporizer 2 from a heat source (not shown) through a temperature control valve 10 . The temperature of the vaporizer 2 is controlled by a temperature controller 11 to be constant. This temperature controller 11 adjusts the opening degree of the temperature control valve 10 according to the temperature detected by the vaporizer, and
It controls the amount of heat supplied to the
気化器２で気化されたガスは、アキユムレータ
圧力調整弁１２を通してアキユムレータ３に送ら
れる。アキユムレータ３の圧力はアキユムレータ
圧力調節計１３により一定になるように制御され
る。このアキユムレータ圧力調節計１３は前述の
気化器圧力調節計８と同様のものである。アキユ
ムレータ３にもアキユムレータ安全弁１４が設け
られている。 The gas vaporized in the vaporizer 2 is sent to the accumulator 3 through the accumulator pressure regulating valve 12. The pressure in the accumulator 3 is controlled to be constant by an accumulator pressure regulator 13. This accumulator pressure regulator 13 is similar to the vaporizer pressure regulator 8 described above. The accumulator 3 is also provided with an accumulator safety valve 14.
アキユムレータ３に貯えられたガスは、さら
に、使用量調整弁１５を通して、ガス燃焼設備等
の消費設備４に供給され、消費される。アキユム
レータ３は、この消費設備４のガス使用量の変動
による圧力変動を吸収する目的で設置されてい
る。 The gas stored in the accumulator 3 is further supplied to consumption equipment 4 such as gas combustion equipment through the usage amount adjustment valve 15, and is consumed. The accumulator 3 is installed for the purpose of absorbing pressure fluctuations due to fluctuations in the amount of gas used by the consumption equipment 4.
以上のような設備では、運転状態にあるとき
は、気化器２及びアキユムレータ３の圧力はそれ
ぞれの圧力調節計８，１３の作用により設定圧力
に維持されるが、起動状態にあるときは、自動起
動機構を持たないため、特に気化器２の圧力がき
わめて不安定なものとなる。 In the equipment described above, when the equipment is in operation, the pressure in the vaporizer 2 and the accumulator 3 is maintained at the set pressure by the action of the respective pressure regulators 8 and 13, but when it is in the starting state, the pressure in the vaporizer 2 and accumulator 3 is maintained at the set pressure. Since it does not have a starting mechanism, the pressure in the vaporizer 2 in particular becomes extremely unstable.
即ち、起動開始時には、気化器２にもアキユム
レータ３にも残圧がないため、それぞれの圧力調
節計８，１３からは、気化器２の圧力及びアキユ
ムレータ３の圧力を規定の圧力にすべく開信号が
出され、それぞれの圧力調整弁７，１２は全開の
状態となつている。このような状態で遮断弁５及
び気化器起動弁６を開くと、気化器２に流入した
液化ガスが瞬間的に気化し、気化器２の圧力が急
上昇する。このため、気化器起動弁６の開時間は
きわめて短かくする必要がある。気化器起動弁６
を閉じると、今度は、気化したガガスがアキユム
レータに逃げて、気化器２の圧力は急激に低下す
るので、再び気化器起動弁６を短時間だけ開く。
このようにして従来は気化器起動弁６の開閉を繰
り返すことにより起動を行なつていた。その状況
をグラフで示すと第２図のとおりである。 That is, at the start of startup, since there is no residual pressure in either the carburetor 2 or the accumulator 3, the respective pressure regulators 8 and 13 indicate that the pressure in the vaporizer 2 and the accumulator 3 are open to the specified pressure. A signal is issued, and each pressure regulating valve 7, 12 is in a fully open state. When the shutoff valve 5 and the carburetor starting valve 6 are opened in this state, the liquefied gas that has flowed into the vaporizer 2 is instantaneously vaporized, and the pressure in the vaporizer 2 rises rapidly. Therefore, the opening time of the carburetor starting valve 6 needs to be extremely short. Carburetor starting valve 6
When the valve is closed, the vaporized gas escapes into the accumulator and the pressure in the vaporizer 2 drops rapidly, so the vaporizer starting valve 6 is opened again for a short time.
In this manner, conventionally the carburetor was started by repeatedly opening and closing the carburetor starting valve 6. The situation is shown graphically in Figure 2.
即ち、起動開始時t1には、気化器圧力調整弁、
アキユムレータ圧力調整弁とも全開の状態となつ
ており、気化器起動弁を短時間T1だけ開にする
と、気化器の圧力は実線で示す曲線ａのように急
激に変化する。このように気化器の圧力変動が大
きすぎるため、気化器圧力調節計による気化器圧
力調整弁の制御は行なえず、気化器圧力調整弁は
全開のままである。気化したガスはアキユムレー
タに流れていくので、アキユムレータの圧力は点
線で示す曲線ｂのようにゆるやかに上昇する。気
化器の圧力がある程度まで低下する時間T2をお
いて、再び気化器起動弁を短時間T1だけ開く。 That is, at the start time t1 , the carburetor pressure regulating valve,
Both the accumulator pressure regulating valves are fully open, and when the carburetor starting valve is opened for a short period of time T1 , the pressure in the carburetor changes rapidly as shown by the solid line curve a. Since the pressure fluctuations in the carburetor are so large as described above, the carburetor pressure regulating valve cannot be controlled by the vaporizer pressure regulator, and the carburetor pressure regulating valve remains fully open. Since the vaporized gas flows into the accumulator, the pressure in the accumulator gradually increases as shown by the dotted curve b. After a time period T 2 for the pressure in the vaporizer to drop to a certain level, the vaporizer starting valve is opened again for a short time T 1 .
このようなことを繰り返していくと、アキユム
レータの設定圧力P2は気化器の設定圧力P1より低
くなつているため、まず、アキユムレータの圧力
が曲線ｂのように設定値P2に到達する。すると、
アキユムレータ圧力調節計の作用によりアキユム
レータ圧力調整弁が閉となるので、それ以後に気
化されたガスの収容容積は、気化器からアキユム
レータ圧力調整弁までの配管内容積だけとなる。
このため、次に気化器起動弁を開としたときは、
曲線ａのように前にもまして気化器の圧力は急上
昇し、状態によつては気化器安全弁のセツト圧力
P3を越え、気化器安全弁が働いてガスが外部に放
出される危険性も出てくる。 As this process is repeated, since the set pressure P2 of the accumulator is lower than the set pressure P1 of the vaporizer, the pressure of the accumulator first reaches the set value P2 as shown by curve b. Then,
Since the accumulator pressure regulating valve is closed by the action of the accumulator pressure regulator, the capacity for storing vaporized gas after that is only the internal volume of the pipe from the vaporizer to the accumulator pressure regulating valve.
Therefore, the next time you open the carburetor start valve,
As shown by curve a, the pressure in the carburetor increases more rapidly than before, and depending on the situation, the set pressure of the carburetor safety valve may increase.
If P 3 is exceeded, there is a risk that the vaporizer safety valve will operate and gas will be released to the outside.
気化器の圧力が気化器設定圧力P1を常に越える
ようになると、気化器圧力調節計の作用により、
気化器圧力調整弁の開度が小さくなつて起動完了
（時点t2）となり、消費設備の運転が開始される。
なお、第２図中Ｔsは起動期間、Ｔpは運転期間を
示す。 When the vaporizer pressure constantly exceeds the vaporizer set pressure P 1 , the action of the vaporizer pressure regulator will cause
The opening degree of the vaporizer pressure regulating valve becomes smaller and the startup is completed (time t 2 ), and the consumption equipment starts operating.
In addition, in FIG. 2, T s indicates a starting period, and T p indicates an operating period.
以上のように、従来の液化ガス気化設備におい
ては、きわめて微妙な起動弁の繰作が必要であ
り、それでもなお気化器の圧力変動を小さくする
ことは困難であつた。 As described above, in conventional liquefied gas vaporization equipment, extremely delicate operation of the start valve is required, and even then, it is difficult to reduce pressure fluctuations in the vaporizer.
本発明の目的は、上記した従来技術の欠点を除
き、気化器に急激な圧力変動を生じさせることな
く、自動的に安定に液化ガス気化設備を起動する
ことのできる起動方法を提供するにある。 An object of the present invention is to eliminate the drawbacks of the prior art described above and to provide a startup method that can automatically and stably start a liquefied gas vaporization equipment without causing sudden pressure fluctuations in the vaporizer. .
この目的を達成するため、本発明は、気化器圧
力調節計およびアキユムレータ圧力調節計の作動
源をオン、オフ可能にし、気化器圧力調節計の作
動源を起動開始前にはオフして気化器圧力調整弁
を閉とし、作動開始時にオンとし、かつ、アキユ
ムレータ圧力調節計の作動源によりアキユムレー
タ圧力調整弁を起動中強制的に開としておくこと
を特徴とする。 To achieve this object, the present invention makes it possible to turn on and off the operating sources of the vaporizer pressure regulator and the accumulator pressure regulator, and turns off the operating source of the vaporizer pressure regulator before starting the vaporizer. The pressure regulating valve is closed and turned on at the start of operation, and the accumulator pressure regulating valve is forcibly kept open during startup by the operating source of the accumulator pressure regulator.
本発明では、気化器圧力調節計に特殊な動作を
行なわせるので、本発明の実施例の説明に入る前
に、気化器調節計の動作原理を第３図を参照して
簡単に説明する。 In the present invention, the carburetor pressure regulator performs a special operation, so before going into the description of the embodiments of the present invention, the principle of operation of the carburetor pressure regulator will be briefly explained with reference to FIG.
この気化器圧力調節計８は、市販のごくありふ
れた計器であり、圧力検出端８１からの信号を入
力とし、この入力信号を設定値K1と突合わせて
偏差Δをとり、この偏差Δの比例演算Ｐ及び積分
演算Ｉを作動源８２から供給される動力により行
ない、その比例値及び積分値の和を出力として、
気化器圧力調整弁７の開度を制御するものであ
る。 This carburetor pressure regulator 8 is a very common commercially available instrument, which inputs the signal from the pressure detection end 81, compares this input signal with the set value K1 , calculates the deviation Δ, and calculates the deviation Δ. The proportional calculation P and the integral calculation I are performed by the power supplied from the operating source 82, and the sum of the proportional value and the integral value is output,
It controls the opening degree of the carburetor pressure regulating valve 7.
このように、従来のこの種の圧力調節計は作動
源が直結されているため常にオンの状態にあり、
入力が入れば必ずそれに応じた出力が出るように
なつている。これを逆から見れば、この種の圧力
調節計計は作動源をオンにしない限り動作しない
こと、したがつて圧力調整弁も制御できないとい
うことである、ここに本発明の一つの着眼点があ
る。 In this way, conventional pressure regulators of this type are always on because they are directly connected to the operating source.
Whenever an input is input, an output corresponding to it is generated. Looking at this from the opposite perspective, this type of pressure regulator does not operate unless the operating source is turned on, and therefore the pressure regulating valve cannot be controlled.This is one of the points of focus of the present invention. be.
なお、アキユムレータ圧力調節計１３の動作原
理も上記気化器圧力調節計８と同様である。 The operating principle of the accumulator pressure regulator 13 is also the same as that of the vaporizer pressure regulator 8 described above.
以下、本発明の実施例を図面を参照して説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
本発明においては、作動源をオン、オフできる
ようにした気化器圧力調節計を用いる。第４図に
その一例を示す。この気化器圧力調節計８Ａは、
作動源８２として圧縮空気を用いた例で、その圧
縮空気の供給経路の途中に三方電磁弁８３を設置
したものである。この三方電磁弁８３はソレノイ
ドＳの動作により経路をＡ―ＢとＢ―Ｃに切替え
られるようになつており、Ａ―Ｂが連通している
ときは作動源８２がオンの状態となつて気化器圧
力調節計８Ａは動作し、またＢ―Ｃが連通してい
るときは作動源８２がオフの状態となつて気化器
圧力調節計８Ａは動作しない。その他の構成は第
３図に示した従来の気化器圧力調節計８と同じで
ある。 In the present invention, a vaporizer pressure regulator is used which allows the operating source to be turned on and off. An example is shown in FIG. This vaporizer pressure regulator 8A is
This is an example in which compressed air is used as the operating source 82, and a three-way solenoid valve 83 is installed in the middle of the compressed air supply path. This three-way solenoid valve 83 is designed to switch the path between A-B and B-C by operating a solenoid S, and when A-B is in communication, the operating source 82 is turned on and vaporization occurs. The vaporizer pressure regulator 8A operates, and when BC is in communication, the operating source 82 is turned off and the vaporizer pressure regulator 8A does not operate. The rest of the structure is the same as the conventional carburetor pressure regulator 8 shown in FIG.
なお、上記の例では作動源として圧縮空気を利
用したが、作動源として電気を利用することもで
き、この場合には、三方電磁弁の代りにスイツチ
を用い、これをオン、オフ制御すればよい。 In the above example, compressed air was used as the operating source, but electricity can also be used as the operating source. In this case, a switch can be used instead of the three-way solenoid valve to turn it on and off. good.
また、本発明においては、アキユムレータ圧力
調整弁を起動中強制的に開としておく機構が用い
られる。第５図にその一例を示す。この例は、ア
キユムレータ圧力調節計１３Ａの出力側に三方電
磁弁１３３を設けたものである。この三方電磁弁
１３３も、前述の気化器圧力調節計８Ａに用いた
ものと同様、ソレノイドＳの動作により経路をＡ
−ＢとＢ―Ｃに切替えられるようになつており、
Ａ―Ｂが連通しているときはアキユムレータ圧力
調節計１３Ａの出力信号がアキユムレータ圧力調
整弁１２に伝達されてその圧力調整弁１２の制御
が行なわれるが、Ｂ―Ｃが通しているときは上記
出力信号が遮断され、アキユムレータ圧力調整弁
１２の制御が行なわれない。したがつて当初Ａ―
Ｂを連通しておき、アキユムレータ圧力調整弁１
２が全開（必ずしも全開でなくともよい）になつ
たところで、Ｂ―Ｃに切替えれば、アキユムレー
タ圧力調整弁１２は全開のまま固定されることに
なる。 Further, in the present invention, a mechanism is used to forcibly keep the accumulator pressure regulating valve open during startup. An example is shown in FIG. In this example, a three-way solenoid valve 133 is provided on the output side of the accumulator pressure regulator 13A. This three-way solenoid valve 133 also changes the path to A by the operation of the solenoid S, similar to the one used in the aforementioned carburetor pressure regulator 8A.
-B and B-C can be switched,
When A and B are communicating, the output signal of the accumulator pressure regulator 13A is transmitted to the accumulator pressure regulating valve 12 and the pressure regulating valve 12 is controlled, but when B and C are communicating, the above The output signal is cut off and the accumulator pressure regulating valve 12 is not controlled. Therefore, initially A-
B is connected to the accumulator pressure regulating valve 1.
When the valve 2 is fully open (it does not necessarily have to be fully open), if the switch is switched to BC, the accumulator pressure regulating valve 12 will be fixed at the fully open position.
なお、アキユムレータ圧力調節計１３Ａのその
他の構成、即ち、圧力検出端１３１からの入力信
号を設定値K2と突合せて偏差Δをとり、作動源
１３２からの動力により比例演算Ｐおよび積分演
算Ｉを行ない、その和を出力とする点は従来と同
様である。 In addition, the other configuration of the accumulator pressure regulator 13A is that the input signal from the pressure detection end 131 is compared with the set value K2 to obtain the deviation Δ, and the proportional calculation P and the integral calculation I are performed using the power from the operating source 132. It is the same as the conventional method in that the sum is the output.
次に、以上のように構成された気化器圧力調節
計８Ａ及びアキユムレータ圧力調節計１３Ａを、
それぞれ第１図の気化器圧力調節計６及びアキユ
ムレータ圧力調節計１３として用い、第１図の液
化ガス気化設備の起動を行なう方法について説明
する。 Next, the vaporizer pressure regulator 8A and the accumulator pressure regulator 13A configured as described above are
A method of starting up the liquefied gas vaporization equipment shown in FIG. 1 by using them as the vaporizer pressure regulator 6 and the accumulator pressure regulator 13 shown in FIG. 1, respectively, will be described.
なお、第６図に、この実施例における各弁の開
度及び気化器圧力、アキユムレータ圧力の変化を
示したので、説明にはこの図もあわせて使用す
る。 In addition, since FIG. 6 shows changes in the opening degree of each valve, the carburetor pressure, and the accumulator pressure in this embodiment, this diagram will also be used in the explanation.
(1) 起動開始（時点t1）前
気化器圧力調節計８Ａの三方電磁弁８３はＢ
―Ｃを連通させ、作動源８２をオフとしておく
ことにより、気化器圧力調節計８Ａの出力を零
とし、気化器圧力調整弁７を閉としておく。(1) Before the start of startup (time t 1 ), the three-way solenoid valve 83 of the carburetor pressure regulator 8A is set to B.
-C is communicated and the operating source 82 is turned off, thereby making the output of the carburetor pressure regulator 8A zero and keeping the carburetor pressure regulating valve 7 closed.
また、アキユムレータ圧力調節計１３Ａの三
方電磁弁１３３はＡ―Ｂを連通させておく。圧
力検出端１３１からはアキユムレータ内の圧力
は零である旨の入力が入るから、アキユムレー
タ圧力調節計１３Ａはアキユムレータの圧力を
規定の圧力にすべく開信号を出し、アキユムレ
ータ圧力調整弁は全開となる。 Further, the three-way solenoid valve 133 of the accumulator pressure regulator 13A keeps A and B in communication. Since an input indicating that the pressure in the accumulator is zero is input from the pressure detection terminal 131, the accumulator pressure regulator 13A outputs an open signal to bring the pressure in the accumulator to the specified pressure, and the accumulator pressure regulating valve is fully opened. .
もちろん、この段階では遮断弁５、気化器起
動弁６は閉じたままである。 Of course, at this stage, the shutoff valve 5 and the carburetor starting valve 6 remain closed.
(2) 起動開始（時点t1）
遮断弁５及び気化器起動弁６を開く。以後こ
の２つの弁は開いたままである。(2) Start of startup (time t 1 ) Open the shutoff valve 5 and carburetor startup valve 6. From then on, these two valves remain open.
気化器圧力調節計８Ａの三方電磁弁８３を切
替えてＡ―Ｂを連通させる。すると、この時か
ら気化器圧力調節計８Ａが動作を開始し、その
出力により気化器圧力調節弁７が徐々に開かれ
て気化器２に液化ガスが流入し、気化が開始さ
れる。 The three-way solenoid valve 83 of the vaporizer pressure regulator 8A is switched to connect A and B. At this time, the vaporizer pressure regulator 8A starts operating, and its output gradually opens the vaporizer pressure regulator valve 7, allowing liquefied gas to flow into the vaporizer 2 and starting vaporization.
また、アキユムレータ圧力調節計１３Ａの三
方電磁弁１３３を切替えてＢ―Ｃを連通させ
る。すると、アキユムレータ圧力調整弁１２は
全開のまま固定されることになり、この状態は
起動完了まで保持される。 Also, the three-way solenoid valve 133 of the accumulator pressure regulator 13A is switched to connect BC. Then, the accumulator pressure regulating valve 12 is fixed in a fully open state, and this state is maintained until the start-up is completed.
起動開始と同時に気化器２の圧力は第６図の
実線で示す曲線ｃのように上昇するが、気化器
圧力調整弁７が徐々に開いてゆくので、圧力上
昇の度合は従来よりゆるやかである。 At the same time as starting, the pressure in the carburetor 2 increases as shown by the solid line c in Figure 6, but since the carburetor pressure regulating valve 7 gradually opens, the degree of pressure increase is more gradual than in the past. .
(3) 起動中（期間Ｔs＝t1〜t2）
気化器圧力調節計８Ａの三方電磁弁８３をそ
のままにしておけば、気化器圧力調節計８Ａが
その圧力調節制御を継続する。即ち、気化器圧
力調節計８Ａは気化器２の圧力を検出し、この
検出値をその設定圧力P1と比較し、両者の偏差
Δの比例演算および積分演算を作動源８２から
供給される動力により行い、その比例値および
積分値の和に比例して気化器圧力調整弁７の開
度を制御する。気化器２の圧力が設定圧力P1に
達すると気化器圧力調整弁７の開度は減少し、
以後、気化されたガスのアキユムレータ３への
移動に伴う気化器２の圧力の変動（減少）に応
じて気化器圧力調節計８の出力信号が変化し、
気化器圧力調整弁７の開度が制御され、気化器
２の圧力はほぼ設定圧力P1に維持される。(3) During startup (period T s = t 1 to t 2 ) If the three-way solenoid valve 83 of the vaporizer pressure regulator 8A is left as is, the vaporizer pressure regulator 8A continues its pressure adjustment control. That is, the carburetor pressure regulator 8A detects the pressure of the carburetor 2, compares this detected value with its set pressure P1 , and performs proportional and integral calculations of the deviation Δ between the two using the power supplied from the operating source 82. The opening degree of the carburetor pressure regulating valve 7 is controlled in proportion to the sum of the proportional value and the integral value. When the pressure of the vaporizer 2 reaches the set pressure P1 , the opening degree of the vaporizer pressure regulating valve 7 decreases,
Thereafter, the output signal of the vaporizer pressure regulator 8 changes in accordance with the fluctuation (decrease) in the pressure of the vaporizer 2 as the vaporized gas moves to the accumulator 3.
The opening degree of the vaporizer pressure regulating valve 7 is controlled, and the pressure of the vaporizer 2 is maintained at approximately the set pressure P1 .
このような気化器圧力調節計８による圧力制
御を、そのまま起動完了まで維持してもよい
が、気化器２での気化を充分に行なわせるため
には、気化器圧力調整弁の開閉を強制的に数回
繰り返すことが好ましい。 The pressure control by the vaporizer pressure regulator 8 may be maintained as it is until the startup is completed, but in order to ensure sufficient vaporization in the vaporizer 2, it is necessary to forcibly open and close the vaporizer pressure regulating valve. It is preferable to repeat this several times.
そのためには、気化器圧力調節計８Ａの三方
電磁弁８３を適当な時間間隔で切替えて、作動
源８２のオン、オフを繰り返すようにすればよ
い。例えば、作動源８２をある時間T3だけオ
ンにしたら、次はある時間T4だけオフにする
ことを繰り返すと、それに応じて気化器圧力調
節計８Ａの動作も間欠的となり、気化器圧力調
整弁７は第６図に示すように開閉が繰り返され
ることになる。このようにすると、気化器２の
圧力は第６図に実線で示す曲線ｃのようにゆる
やかな上下変動を繰り返しながら、次第にその
変動幅を小さくしてゆき、設定圧力P1に到達す
る。 For this purpose, the three-way solenoid valve 83 of the carburetor pressure regulator 8A may be switched at appropriate time intervals to repeatedly turn the operating source 82 on and off. For example, if the operating source 82 is turned on for a certain time T3 and then turned off for a certain time T4 , the operation of the vaporizer pressure regulator 8A becomes intermittent accordingly, and the vaporizer pressure is adjusted. The valve 7 will be repeatedly opened and closed as shown in FIG. In this way, the pressure in the carburetor 2 repeatedly fluctuates gently up and down as shown by the solid line c in FIG. 6, gradually reducing the width of the fluctuation until it reaches the set pressure P1 .
アキユムレータ３には、気化されたガスが
徐々に蓄積されるので、その圧力は、第６図に
点線で示す曲線ｄのようにゆるやかに上昇す
る。 Since the vaporized gas is gradually accumulated in the accumulator 3, its pressure gradually rises as shown by the dotted line d in FIG.
アキユムレータ圧力調整弁１２は起動中全開
となつているから、アキユムレータ３の圧力が
設定値P2に達しても、その圧力は上昇しつづけ
る。本実施例では、気化されたガスの収容容積
は気化器２からアキユムレータ３までの容積を
加えたものとなつており、この容積は起動完了
まで変らない。したがつて、起動の途中でアキ
ユムレータ圧力調整弁１２が閉じられるために
生じる気化器２の急激な圧力変動をなくすこと
ができる。 Since the accumulator pressure regulating valve 12 is fully open during startup, even if the pressure in the accumulator 3 reaches the set value P2 , the pressure continues to rise. In this embodiment, the storage volume of the vaporized gas is the sum of the volume from the vaporizer 2 to the accumulator 3, and this volume does not change until the startup is completed. Therefore, sudden pressure fluctuations in the carburetor 2 that occur due to the accumulator pressure regulating valve 12 being closed during startup can be eliminated.
(4) 起動完了（時点t2）
アキユムレータ３の圧力がほぼ気化器２の設
定圧力P1に達したら起動完了である。(4) Start-up completion (time t 2 ) When the pressure of the accumulator 3 reaches approximately the set pressure P 1 of the vaporizer 2, the start-up is completed.
この時点では、気化器圧力調節計８Ａの三方
電磁弁８３を切替えてＡ−Ｂを連通させ、同調
節計８Ａの作動源８２をオンにする。同時に、
アキユムレータ圧力調節計１３Ａの三方電磁弁
１３３を切替えてＡ−Ｂを連通させ、アキユム
レータ圧力調整弁１２の強制全開を解く。そし
て、使用量調整弁１５を開けば、消費設備４に
ガスが供給され、運転状態に入る。以後、気化
器調節計８Ａ及びアキユムレータ圧力調節計１
３Ａは通常の動作を行なう。 At this point, the three-way solenoid valve 83 of the vaporizer pressure regulator 8A is switched to communicate A and B, and the operating source 82 of the regulator 8A is turned on. at the same time,
The three-way solenoid valve 133 of the accumulator pressure regulator 13A is switched to connect A and B, and the forced full opening of the accumulator pressure regulator valve 12 is released. Then, when the usage amount adjustment valve 15 is opened, gas is supplied to the consumption equipment 4 and the equipment enters an operating state. Hereinafter, carburetor controller 8A and accumulator pressure controller 1
3A performs normal operation.
以上説明した如く、本発明によれば、特別な自
動起動機構を設けることなく、液化ガス気化設備
の起動を自動的に安定して行なわせることができ
る。 As explained above, according to the present invention, the liquefied gas vaporization equipment can be started automatically and stably without providing a special automatic starting mechanism.
第１図は液化ガス気化設備の概略構成図、第２
図は第１図に示した液化ガス気化設備を従来の起
動方法で起動した場合の各部における動作及び圧
力状態を示すグラフ、第３図は従来の気化器圧力
調節計の制御系統図、第４図は本発明で使用され
る気化器圧力調節計の制御系統図、第５図は本発
明で使用されるアキユムレータ圧力調節計の制御
系統図、第６図は第１図に示した液化ガス気化設
備を本発明の一実施例に係る起動方法で起動した
場合の各部の動作及び圧力状態を示すグラフであ
る。
２…気化器、３…アキユムレータ、６…気化器
起動弁、７…気化器圧力調整弁、８，８Ａ…気化
器圧力調節計、８１…圧力検出端、８２…作動
源、８３…三方電磁弁、１２…アキユムレータ圧
力調整弁、１３，１３Ａ…アキユムレータ圧力調
節計。
Figure 1 is a schematic diagram of the liquefied gas vaporization equipment, Figure 2
Figure 1 is a graph showing the operation and pressure status of each part when the liquefied gas vaporization equipment shown in Figure 1 is started using the conventional startup method. Figure 3 is a control system diagram of a conventional vaporizer pressure regulator. The figure is a control system diagram of the vaporizer pressure regulator used in the present invention, Figure 5 is the control system diagram of the accumulator pressure regulator used in the present invention, and Figure 6 is the liquefied gas vaporization shown in Figure 1. It is a graph showing the operation and pressure state of each part when the equipment is started by the starting method according to one embodiment of the present invention. 2... Carburetor, 3... Accumulator, 6... Carburetor starting valve, 7... Carburetor pressure regulating valve, 8, 8A... Carburetor pressure regulator, 81... Pressure detection end, 82... Operating source, 83... Three-way solenoid valve , 12...Accumulator pressure regulating valve, 13, 13A...Accumulator pressure regulator.
Claims (1)
化されたガスのアキユムレータとを備え、前記気
化器の圧力を、その気化器で検出された圧力に応
じて気化器の液化ガス流入口側に設けられた気化
器圧力調整弁の開度を調整する気化器圧力調節計
により制御し、前記アキユムレータの圧力を、そ
のアキユムレータで検出された圧力に応じて、ア
キユムレータのガス流入口側に設けられたアキユ
ムレータ圧力調整弁の開度を調整するアキユムレ
ータ圧力調節計により制御する液化ガス気化設備
の起動方法において、前記気化器圧力調節計およ
びアキユムレータ圧力調節計の作動源をオン、オ
フ可能にして、前記気化器圧力調節計の作動源を
起動開始前にオフにして気化器圧力調整弁を閉と
し、起動開始時に前記作動源をオンとし、かつ前
記アキユムレータ調整弁を前記アキユムレータ圧
力調節計の作動源により起動中強制的に開として
おくことを特徴とする液化ガス気化設備の起動方
法。 ２ 起動中に、前記気化器圧力調節計の作動源の
オン、オフを繰り返すことを特徴とする特許請求
の範囲第１項記載の液化ガス気化設備の起動方
法。 ３ 前記圧力調節計の作動源および前記アキユム
レータ圧力調節計の作動源は圧縮空気であり、そ
れら作動源のオン、オフは三方電磁弁により行わ
れることを特徴とする特許請求の範囲第１項又は
第２項記載の液化ガス気化設備の起動方法。 ４ 前記圧力調節計の作動源および前記アキユム
レータ圧力調節計の作動源は電気であり、それら
作動源のオン、オフはスイツチにより行われるこ
とを特徴とする特許請求の範囲１項又は第２項記
載の液化ガス気化設備の起動方法。[Scope of Claims] 1. A device comprising a vaporizer for liquefied gas and an accumulator for gas vaporized by the vaporizer, wherein the pressure in the vaporizer is adjusted according to the pressure detected by the vaporizer. The pressure in the accumulator is controlled by a vaporizer pressure regulator that adjusts the opening degree of the vaporizer pressure regulating valve provided on the liquefied gas inlet side of the accumulator, and the pressure in the accumulator is adjusted according to the pressure detected in the accumulator. In a method for starting liquefied gas vaporization equipment controlled by an accumulator pressure regulator that adjusts the opening degree of an accumulator pressure regulator provided on the inlet side, turning on the operating sources of the vaporizer pressure regulator and the accumulator pressure regulator; The operating source of the vaporizer pressure regulator is turned off before the start of startup to close the vaporizer pressure regulating valve, the operating source is turned on at the start of startup, and the accumulator regulating valve is set to the accumulator pressure regulator. A method for starting liquefied gas vaporization equipment, characterized in that it is forcibly kept open during startup by an operating source of a controller. 2. The method for starting a liquefied gas vaporization equipment according to claim 1, characterized in that during startup, the operating source of the vaporizer pressure regulator is repeatedly turned on and off. 3. The operating source of the pressure regulator and the accumulator pressure regulator are compressed air, and these operating sources are turned on and off by a three-way solenoid valve. A method for starting the liquefied gas vaporization equipment according to item 2. 4. The operating source of the pressure regulator and the accumulator pressure regulator are electricity, and these operating sources are turned on and off by a switch, according to claim 1 or 2. How to start up liquefied gas vaporization equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12027877A JPS5454318A (en) | 1977-10-06 | 1977-10-06 | Starting method of liquefied gas vaporization ficility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12027877A JPS5454318A (en) | 1977-10-06 | 1977-10-06 | Starting method of liquefied gas vaporization ficility |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5454318A JPS5454318A (en) | 1979-04-28 |
| JPS6229679B2 true JPS6229679B2 (en) | 1987-06-27 |
Family
ID=14782269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12027877A Granted JPS5454318A (en) | 1977-10-06 | 1977-10-06 | Starting method of liquefied gas vaporization ficility |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5454318A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63231776A (en) * | 1987-03-19 | 1988-09-27 | Nitto Electric Ind Co Ltd | Lifter for magnetic disk device |
-
1977
- 1977-10-06 JP JP12027877A patent/JPS5454318A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63231776A (en) * | 1987-03-19 | 1988-09-27 | Nitto Electric Ind Co Ltd | Lifter for magnetic disk device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5454318A (en) | 1979-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2011202380A1 (en) | Method and system for controlling a process in a plant | |
| JPS58500214A (en) | Control device for multi-stage steam generator installations or multi-stage hot water generator installations | |
| JP6102475B2 (en) | Boiler system | |
| JPS6229679B2 (en) | ||
| JP2005025961A (en) | Fuel cell power generation system | |
| JPH05215297A (en) | Heating and decompressing system commonly used for gaseous phase of liquefied gas | |
| JPH0330684Y2 (en) | ||
| JPS63214599A (en) | Control device for liquefied natural gas gasifying facility | |
| JPH0429197Y2 (en) | ||
| JP2886800B2 (en) | Water heater | |
| JP2008190734A (en) | Steam supply device | |
| JPH07145928A (en) | Method and apparatus for controlling fuel gas | |
| JPH03267512A (en) | Steam turbine controller | |
| JP2021161906A (en) | Fuel gas supply device | |
| JPH10300250A (en) | Equipment and method for controlling pressure of refrigeration liquefier | |
| JPH08233392A (en) | Absorption type refrigerating machine | |
| JPH0681606A (en) | Steam turbine controller | |
| JPS5680600A (en) | Liquefied gas evaporator and operating method for the same | |
| JP2000121036A (en) | Liquefied gas supply circuit | |
| JPS59145421A (en) | Controlling method of flow rate of supplying liquid for evaporator | |
| JPS58160759A (en) | Apparatus for controlling hot water supplying apparatus | |
| JPH0368226B2 (en) | ||
| JPH0219359B2 (en) | ||
| JP2572771Y2 (en) | Operation control device for gas vaporization equipment | |
| JPS63121901A (en) | Process controller |