JPH0518498A - Supply device for liquefied gas to be injected for foaming - Google Patents
Supply device for liquefied gas to be injected for foamingInfo
- Publication number
- JPH0518498A JPH0518498A JP19855091A JP19855091A JPH0518498A JP H0518498 A JPH0518498 A JP H0518498A JP 19855091 A JP19855091 A JP 19855091A JP 19855091 A JP19855091 A JP 19855091A JP H0518498 A JPH0518498 A JP H0518498A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- liquefied gas
- intermediate tank
- liquefied
- pipe
- 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
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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
- F17C13/045—Automatic change-over switching assembly for bottled gas systems with two (or more) gas containers
-
- 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
-
- 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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/04—Methods for emptying or filling
-
- 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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/01—Intermediate tanks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は発泡用注入液化ガス供給
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection liquefied gas supply device for foaming.
【０００２】[0002]
【従来の技術】発泡同軸ケーブル等を製造する場合、長
尺状の導体を押出機内を通過させ、該押出機内において
該導体に発泡樹脂を被覆すると共に、該発泡樹脂内へ発
泡用注入液化ガス供給装置にて液化ガスを注入してい
た。2. Description of the Related Art When manufacturing a foamed coaxial cable or the like, a long conductor is passed through an extruder, the conductor is coated with a foamed resin in the extruder, and a foaming injection liquefied gas is injected into the foamed resin. Liquefied gas was being injected by the supply device.
【０００３】しかして、従来の発泡用注入液化ガス供給
装置は、発泡用注入液化ガスが充填された単数のガスボ
ンベを使用しており、このガスボンベの液化ガスが無く
なれば、新たなガスボンベに１本ずつ順次切り替えてい
た。However, the conventional foaming injection liquefied gas supply device uses a single gas cylinder filled with the foaming injection liquefied gas, and when the liquefied gas in the gas cylinder is exhausted, one new gas cylinder is provided. They were switching one by one.
【０００４】[0004]
【発明が解決しようとする課題】従って、ガスボンベの
液化ガスが無くなれば、新たなガスボンベに切り替える
までの間、発泡樹脂内に液化ガスが注入されないことに
なり、発泡樹脂が発泡しない不良部分が形成されること
になる。Therefore, when the liquefied gas in the gas cylinder is exhausted, the liquefied gas is not injected into the foamed resin until the gas cylinder is switched to a new gas cylinder, and a defective portion in which the foamed resin does not foam is formed. Will be done.
【０００５】そこで、本発明では、常に、発泡用注入液
化ガスを発泡樹脂内へ注入することができ、製造される
同軸ケーブル等に不良部位が形成されることのない液化
ガス供給装置を提供することを目的とする。In view of this, the present invention provides a liquefied gas supply device that can always inject the liquefied gas for foaming into the foamed resin and does not form a defective portion in the manufactured coaxial cable or the like. The purpose is to
【０００６】[0006]
【課題を解決するための手段】上述の目的を達成するた
めに、本発明に係る発泡用注入ガス供給装置は、発泡用
注入液化ガスが充填された複数本のガスボンベと、該液
化ガスが一旦貯蔵される中間タンクと、上記ガスボンベ
が交換自在として連結されて該ガスボンベ内の液化ガス
を上記中間タンク内へ供給するためのガス供給路と、該
ガス供給路の一部に介装されて上記複数本のガスボンベ
から択一的に上記中間タンクへ液化ガスを送るための切
換手段と、上記中間タンク内の液化ガスを発泡樹脂内へ
注入するためのガス注入路と、上記中間タンク内の貯蔵
量を検出する検出手段と、を備えたものである。In order to achieve the above object, a foaming injection gas supply device according to the present invention is provided with a plurality of gas cylinders filled with a foaming injection liquefied gas, and the liquefied gas once An intermediate tank to be stored, the gas cylinder is exchangeably connected, and a gas supply path for supplying the liquefied gas in the gas cylinder into the intermediate tank; and a gas supply path that is interposed in a part of the gas supply path. Switching means for selectively sending the liquefied gas from the plurality of gas cylinders to the intermediate tank, a gas injection path for injecting the liquefied gas in the intermediate tank into the foamed resin, and a storage in the intermediate tank And a detection means for detecting the amount.
【０００７】[0007]
【作用】中間タンク内の液化ガスをガス注入路を介して
発泡樹脂内へ注入するものであるので、まず、一のガス
ボンベの液化ガスをガス供給路を介して中間タンク内へ
供給し、その状態で、ケーブル製造ラインを駆動させれ
ば、一のガスボンベの液化ガスが中間タンク内へ供給さ
れ、この中間タンク内の液化ガスが発泡樹脂内へ注入さ
れ、ケーブルが製造されてゆく。Since the liquefied gas in the intermediate tank is injected into the foamed resin through the gas injection path, first, the liquefied gas in one gas cylinder is supplied into the intermediate tank through the gas supply path, When the cable manufacturing line is driven in this state, the liquefied gas of one gas cylinder is supplied into the intermediate tank, the liquefied gas in this intermediate tank is injected into the foamed resin, and the cable is manufactured.
【０００８】そして、上述の一のガスボンベの液化ガス
が無くなれば、検出手段にて知ることができ、そこで、
切換手段にて液化ガスが充填された新たな他のガスボン
ベによる中間タンクへの液化ガスの供給を行なうことが
でき、中間タンクから液化ガスを発泡樹脂内へ注入する
ことができる。If the liquefied gas in the above-mentioned one gas cylinder is exhausted, it can be detected by the detection means.
The liquefied gas can be supplied to the intermediate tank by another new gas cylinder filled with the liquefied gas by the switching means, and the liquefied gas can be injected into the foamed resin from the intermediate tank.
【０００９】つまり、一のガスボンベの液化ガスが無く
なった際にも、中間タンク内には、液化ガスは十分に貯
蔵され、この液化ガスによる発泡樹脂の発泡を行なわせ
ることができる。That is, even when the liquefied gas in one gas cylinder is exhausted, the liquefied gas is sufficiently stored in the intermediate tank, and the foamed resin can be foamed by the liquefied gas.
【００１０】また、ガス供給路に対して各ガスボンベは
交換自在であるので、液化ガスが無くなったガスボンベ
を、他のガスボンベによる液化ガスの発泡樹脂内への注
入を行なっている間に、新しいガスボンベに交換するこ
とができる。Further, since each gas cylinder can be exchanged with respect to the gas supply passage, a new gas cylinder can be replaced while the other gas cylinder is injecting the liquefied gas into the foamed resin. Can be exchanged.
【００１１】[0011]
【実施例】以下、実施例を示す図面に基づいて本発明を
詳説する。The present invention will be described in detail below with reference to the drawings illustrating the embodiments.
【００１２】図１と図２は本発明に係る発泡用注入液化
ガス供給装置を示し、この装置は、例えば、線状導体に
発泡樹脂を被覆するための押出機内へ、発泡用注入液化
ガスＧ（例えば、フロン２２）を高圧注入し、該発泡樹
脂を発泡させるためのものである。FIG. 1 and FIG. 2 show an injecting liquefied gas supply device for foaming according to the present invention. For example, this device is used for injecting a liquefied gas gas G for foaming into an extruder for coating a linear conductor with a resin foam. (For example, Freon 22) is injected at a high pressure to foam the foamed resin.
【００１３】しかして、この装置は、発泡用注入液化ガ
スＧが充填された複数本（実施例では、２本）のガスボ
ンベ１，１と、液化ガスが一旦貯蔵される中間タンク２
と、ガスボンベ１内の液化ガスＧを中間タンク２内へ供
給するためのガス供給路３と、複数本のガスボンベ１か
ら択一的に中間タンク２への液化ガスＧを送るための切
換手段４と、中間タンク２内の液化ガスＧを発泡樹脂内
へ注入するためのガス注入路５と、中間タンク２内の液
化ガスＧの貯蔵量を検出する検出手段６と、を備えてい
る。In this apparatus, therefore, a plurality (two in the embodiment) of gas cylinders 1 and 1 filled with the foaming injection liquefied gas G and the intermediate tank 2 in which the liquefied gas is temporarily stored.
And a gas supply path 3 for supplying the liquefied gas G in the gas cylinder 1 into the intermediate tank 2, and a switching means 4 for selectively sending the liquefied gas G from the plurality of gas cylinders 1 to the intermediate tank 2. And a gas injection path 5 for injecting the liquefied gas G in the intermediate tank 2 into the foamed resin, and a detection means 6 for detecting the storage amount of the liquefied gas G in the intermediate tank 2.
【００１４】そして、ガスボンベ１は、上方開口部が蓋
部材７にて施蓋され、この蓋部材７には、ほぼ底壁８に
まで達する第１細径管９と、短寸の第２細径管10と、が
付設されている。なお、以下、図面における左側のガス
ボンベ１をイのガスボンベと呼び、右側のガスボンベ１
をロのガスボンベと呼ぶ。The upper portion of the gas cylinder 1 is covered with a lid member 7, and the lid member 7 has a first thin tube 9 extending almost to a bottom wall 8 and a second short tube. A diameter pipe 10 is attached. In addition, hereinafter, the gas cylinder 1 on the left side in the drawings will be referred to as the gas cylinder 1 of FIG.
Is called Ro's gas cylinder.
【００１５】また、ガス供給路３には、窒素ガス等の押
圧用ガスが充填されたガスボンベ11と、上述の切換手段
４とが介装されている。ここで、切換手段４とは、４つ
の第１・第２・第３・第４切換弁12，13，14，15からな
る。Further, the gas supply passage 3 is provided with a gas cylinder 11 filled with a pressing gas such as nitrogen gas, and the above-mentioned switching means 4. Here, the switching means 4 comprises four first, second, third and fourth switching valves 12, 13, 14, 15.
【００１６】そして、ガス供給路３は、ガスボンベ11と
第１切換弁12とを連通連結する配管16と、第１切換弁12
とイのガスボンベ１の第２細径管10とを連通連結する配
管17と、イのガスボンベ１の第１細径管９と第３切換弁
14とを連通連結する配管18と、配管16と第２切換弁13と
を連通連結する配管19と、第２切換弁とロのガスボンベ
１の第２細径管10とを連通連結する配管20と、ロのガス
ボンベ１の第１細径管９と第４切換弁15とを連通連結す
る配管21と、第３・第４切換弁14，15と中間タンク２と
を連通連結する配管22と、を備えたものであり、配管16
には、圧力計23が介装されると共に、ガスパージ用の安
全弁24が連設されている。The gas supply path 3 has a pipe 16 for connecting the gas cylinder 11 and the first switching valve 12 to each other, and the first switching valve 12
And a pipe 17 for connecting the second small-diameter pipe 10 of the gas cylinder 1 and the first small-diameter pipe 9 and the third switching valve of the gas cylinder 1 of b.
A pipe 18 for connecting and connecting 14 to each other, a pipe 19 for connecting and connecting the pipe 16 and the second switching valve 13 to each other, and a pipe 20 for connecting and connecting the second switching valve and the second small diameter pipe 10 of the gas cylinder 1 b. A pipe 21 for connecting the first small diameter pipe 9 of the gas cylinder 1 and the fourth switching valve 15 to each other, and a pipe 22 connecting the third and fourth switching valves 14 and 15 to the intermediate tank 2. , With piping 16
A pressure gauge 23 is interposed in the valve, and a safety valve 24 for gas purging is connected in series.
【００１７】また、配管17，18，20，21のガスボンベ１
側の端部にはボンベ１の蓋部材７のバルブ25…に着脱自
在に取付けられる。つまり、各ボンベ１はこのガス供給
路３に対して着脱自在であって、交換することができ
る。Further, the gas cylinder 1 of the pipes 17, 18, 20, 21
The valve 25 of the lid member 7 of the cylinder 1 is detachably attached to the end portion on the side. That is, each cylinder 1 is detachable from the gas supply path 3 and can be replaced.
【００１８】しかして、中間タンク２は、上方開口部26
と下方開口部27とを有し、上方開口部26には、図３に示
すように、ガス供給管28が連通連結され、このガス供給
管28には継手部材29が連設されている。Therefore, the intermediate tank 2 has an upper opening 26.
As shown in FIG. 3, a gas supply pipe 28 is communicatively connected to the upper opening 26, and a joint member 29 is connected to the gas supply pipe 28.
【００１９】即ち、ガス供給管28は、下端ねじ部30が上
方開口部26のねじ孔31に螺着される外管32と、該外管32
に内装される内管33と、からなり、また、継手部材29に
は、内管33に連通連結される供給管34と、ガスパージ用
の安全弁35（図１又は図２参照）に連通連結される配管
36と、検出手段６に連通連結される配管37と、が連通さ
れている。That is, the gas supply pipe 28 includes an outer pipe 32 having a lower end screw portion 30 screwed into a screw hole 31 of the upper opening 26, and the outer pipe 32.
And an inner pipe 33 that is internally installed in the joint member 29. The joint member 29 is also connected to a supply pipe 34 that is connected to the inner pipe 33 and a safety valve 35 for gas purging (see FIG. 1 or 2). Piping
36 and a pipe 37 which is connected to the detecting means 6 are connected.
【００２０】従って、ガス供給路３からの液化ガスＧは
供給管34、継手部材29、及びガス供給管28の内管33を介
して中間タンク２に供給され、中間タンク２内の窒素ガ
ス等の押圧用ガスは、内管33と外管32との間の隙間38、
継手部材29、配管36及び安全弁35を介して外部へ排出さ
れる。Therefore, the liquefied gas G from the gas supply passage 3 is supplied to the intermediate tank 2 via the supply pipe 34, the joint member 29, and the inner pipe 33 of the gas supply pipe 28, and the nitrogen gas in the intermediate tank 2 or the like. The pressing gas is a gap 38 between the inner pipe 33 and the outer pipe 32,
It is discharged to the outside through the joint member 29, the pipe 36 and the safety valve 35.
【００２１】しかして、検出手段６は、液面計40と、該
液面計40の液面の位置を検出するセンサ41と、液面計の
液面が所定レベルより下位になったときに点灯する警報
ランプ42と、等を備えたものであり、液面計40は、上述
の配管37と、液面計40の下方開口部と中間タンク２の下
方開口部27とを連通連結する配管43と、により、中間タ
ンク２と連通連結されている。Therefore, the detecting means 6 includes the liquid level gauge 40, the sensor 41 for detecting the position of the liquid level of the liquid level gauge 40, and the liquid level of the liquid level gauge when it is lower than a predetermined level. The liquid level gauge 40 is provided with a lighted alarm lamp 42, and the like. The liquid level gauge 40 is a pipe that connects the lower opening of the liquid level gauge 40 and the lower opening 27 of the intermediate tank 2 to each other. 43 is connected to the intermediate tank 2 by communication.
【００２２】即ち、液面計40内と中間タンク２内とは同
一圧力にて保持され、液面計40の液（液化ガスＧ）の液
面と中間タンク２内の液（液化ガスＧ）の液面と同一高
さとされる。従って、液面計40の液面の位置を検出する
ことは、中間タンク２内の液面の位置を検出することに
なる。That is, the liquid level gauge 40 and the intermediate tank 2 are held at the same pressure, and the liquid level of the liquid level gauge 40 (liquefied gas G) and the liquid in the intermediate tank 2 (liquefied gas G) are maintained. It is the same height as the liquid surface of. Therefore, detecting the position of the liquid level of the liquid level gauge 40 means detecting the position of the liquid level in the intermediate tank 2.
【００２３】しかして、ガス注入路５は、流量計44と、
切換弁45，46と、液圧計47等が介装され、流量計44と配
管43とを連通連結する配管48と、切換弁45と流量計44と
を連通連結する配管49と、該配管49と切換弁46とを連通
連結する配管50と、切換弁45から図示省略の押出機に液
化ガスＧを供給するための配管51と、切換弁46から図示
省略の押出機に液化ガスＧを供給するための配管52と、
を備えている。53は配管43と配管48とを連通連結するた
めの継手部材である。The gas injection passage 5 is connected to the flowmeter 44,
A pipe 48 that connects the switching valves 45 and 46, a hydraulic pressure gauge 47, etc., and connects the flow meter 44 and the pipe 43 to each other, a pipe 49 that connects the switching valve 45 and the flow meter 44 to each other, and the pipe 49. With a switching valve 46, a pipe 51 for supplying the liquefied gas G from the switching valve 45 to the extruder not shown, and a liquefied gas G from the switching valve 46 to the extruder not shown. Piping 52 for
Is equipped with. Reference numeral 53 is a joint member for connecting and connecting the pipe 43 and the pipe 48.
【００２４】次に、上述の如く構成されたガス供給装置
の使用方法を説明する。Next, a method of using the gas supply device configured as described above will be described.
【００２５】まず、全ての弁を閉状態とし、ガスボンベ
11からの窒素ガス等の押圧用ガスのガス圧を所定圧（例
えば、15kg／cm2 ）に設定する。圧力オーバ時の調整は
パージ用の安全弁24を調整することにより行なう。First, all valves are closed and the gas cylinder is closed.
The gas pressure of the pressing gas such as nitrogen gas from 11 is set to a predetermined pressure (for example, 15 kg / cm 2 ). Adjustment when the pressure is over is performed by adjusting the safety valve 24 for purging.
【００２６】次に、第１切換弁12を開状態とすると共
に、イのガスボンベ１の配管17側のバルブ25を開状態と
し、次に、イのガスボンベ１の配管18側のバルブ25を開
状態として、第２切換弁14を開状態とする。そして、パ
ージ用の安全弁35を開状態として、中間タンク２内に液
化ガスＧを供給し、中間タンク２内の液化ガスＧの液面
が上方開口部26に達したときに安全弁35を閉状態とす
る。Next, the first switching valve 12 is opened, the valve 25 on the pipe 17 side of the gas cylinder 1 is opened, and the valve 25 on the pipe 18 side of the gas cylinder 1 is opened. As a state, the second switching valve 14 is opened. Then, the purge safety valve 35 is opened, the liquefied gas G is supplied into the intermediate tank 2, and the safety valve 35 is closed when the liquid level of the liquefied gas G in the intermediate tank 2 reaches the upper opening 26. And
【００２７】従って、図１に示すように、液面計40の液
面は、該液面計40の中間位置（つまり、この中間位置よ
り液面が下位の場合には、警報ランプ42が点灯する位
置）より上方位置とされている。Therefore, as shown in FIG. 1, the liquid level of the liquid level gauge 40 is at an intermediate position of the liquid level gauge 40 (that is, when the liquid level is lower than the intermediate position, the alarm lamp 42 is turned on). Position).
【００２８】そして、この状態で、切換弁45，46が開状
態とされ、各押出機に中間タンク２内の液化ガスＧが注
入される。この場合、中間タンク２から各押出機へ供給
される液化ガスＧの量とガスボンベ１から中間タンク２
へ供給される液化ガスＧの量とは略同一となり、液面計
40の液面（延いては中間タンク２の液面）はほぼ一定に
保持される。なお、押出機へは、図示省略の加圧機にて
所定圧にて加圧された液化ガスＧが注入される。Then, in this state, the switching valves 45, 46 are opened and the liquefied gas G in the intermediate tank 2 is injected into each extruder. In this case, the amount of liquefied gas G supplied from the intermediate tank 2 to each extruder and the gas tank 1 to the intermediate tank 2
The amount of liquefied gas G supplied to the
The liquid level of 40 (further, the liquid level of the intermediate tank 2) is kept substantially constant. The liquefied gas G pressurized at a predetermined pressure by a pressurizer (not shown) is injected into the extruder.
【００２９】そして、イのガスボンベ１の液化ガスＧが
無くなれば、イのガスボンベ１に入った窒素ガス等の押
圧用ガスが直接ガス供給路３を介して中間タンク２内に
入ることになり、中間タンク２の液面が図２に示すよう
に下がり始める。つまり、液面計40の液面も下がり始
め、液面が所定レベル（つまり、液面計の上下方向中間
位置）より低下すれば、センサ41がそのことを検出し、
警報ランプ42を点灯させ、作業者は、そのこと（イのガ
スボンベ１の液化ガスがなくなったこと）を把握でき
る。勿論、液面計40を見て液面が所定レベルより低下し
ていることを把握することができる。When the liquefied gas G in the gas cylinder 1 of (a) is exhausted, the pressing gas such as nitrogen gas in the gas cylinder 1 of (a) directly enters the intermediate tank 2 through the gas supply passage 3, The liquid level of the intermediate tank 2 starts to drop as shown in FIG. That is, the liquid level of the liquid level gauge 40 also begins to fall, and when the liquid level falls below a predetermined level (that is, the vertical position intermediate position of the liquid level gauge), the sensor 41 detects that,
The alarm lamp 42 is turned on, and the operator can recognize the fact (the liquefied gas in the gas cylinder 1 in (a) has run out). Of course, it is possible to understand by looking at the liquid level gauge 40 that the liquid level is lower than a predetermined level.
【００３０】この場合、第２切換弁13を開状態とすると
共に、ロのガスボンベ１の配管20側のバルブ25を開状態
とし、さらに、ロのガスボンベ１の配管21側のバルブ25
を開状態とすると共に、第４切換弁15を開状態とする。In this case, the second switching valve 13 is opened, the valve 25 on the pipe 20 side of the gas cylinder 1 is opened, and the valve 25 on the pipe 21 side of the gas cylinder 1 is closed.
Is opened and the fourth switching valve 15 is opened.
【００３１】次に、第１切換弁12と第３切換弁14とイの
ガスボンベ１の両バルブ25，25を閉状態とする。Next, the first switching valve 12, the third switching valve 14 and both valves 25, 25 of the gas cylinder 1 of b are closed.
【００３２】従って、ロのガスボンベ１の液化ガスＧが
中間タンク２内に入ることになるので、このとき、パー
ジ用の安全弁35を開状態とし、中間タンク２内の窒素ガ
ス等の押圧用ガスを抜き、図１に示すように液化ガスＧ
の液面を上方開口部26に達する位置として、安全弁35を
閉状態とする。なお、この場合、警報ランプ42等をセッ
トしなおす。つまり、液面計40の液面が所定レベル以下
になれば、警報ランプ42が点灯するようにセットしてお
く。Accordingly, since the liquefied gas G from the gas cylinder 1 of B enters into the intermediate tank 2, the safety valve 35 for purging is opened at this time, and the pressing gas such as nitrogen gas in the intermediate tank 2 is opened. Liquefied gas G as shown in FIG.
The safety valve 35 is closed with the liquid surface of the above as the position to reach the upper opening 26. In this case, the alarm lamp 42 and the like are reset. That is, the alarm lamp 42 is set to turn on when the liquid level of the liquid level gauge 40 becomes equal to or lower than a predetermined level.
【００３３】即ち、ロのガスボンベ１から液化ガスＧが
中間タンク２内へ供給され、中間タンク２から各押出機
へ供給される。That is, the liquefied gas G is supplied from the gas cylinder 1 to the inside of the intermediate tank 2, and is supplied from the intermediate tank 2 to each extruder.
【００３４】そして、このとき、液化ガスＧが無くなっ
たイのガスボンベ１を、ガス供給路３から外し、液化ガ
スＧが充填された新たなガスボンベ１に取り替えること
ができ、ロのガスボンベ１の液化ガスＧが無くなれば、
上述の場合と同様、ロのガスボンベ１の液化ガスＧが無
くなったことを確認することができ、イの新たなガスボ
ンベ１に切り換えることができる。なお、液化ガスＧが
無くなったガスボンベ１を取り替える場合、そのガスボ
ンベ１をガス供給路３から取り外し、このガスボンベ１
に再び液化ガスＧを充填し、再びこのガスボンベ１をガ
ス供給路３に連結するようにするも自由である。At this time, the gas cylinder 1 in which the liquefied gas G is lost can be removed from the gas supply path 3 and replaced with a new gas cylinder 1 filled with the liquefied gas G. If the gas G runs out,
As in the case described above, it is possible to confirm that the liquefied gas G in the gas cylinder 1 of 2 has been exhausted, and it is possible to switch to the new gas cylinder 1 of b. When replacing the gas cylinder 1 that has lost the liquefied gas G, the gas cylinder 1 is removed from the gas supply path 3 and the gas cylinder 1 is replaced.
It is also free to refill the gas cylinder 1 with the liquefied gas G and connect the gas cylinder 1 to the gas supply path 3 again.
【００３５】従って、供給しているガスボンベ１の液化
ガスＧが無くなった場合においても押出機への液化ガス
Ｇの注入は停止することがなくなり、発泡樹脂に発泡し
ていない部位が生じることがなく、製造された製品は安
定したものとなる。Therefore, even when the liquefied gas G of the gas cylinder 1 being supplied is exhausted, the injection of the liquefied gas G into the extruder is not stopped, and the foamed resin does not have a non-foamed portion. , The manufactured products will be stable.
【００３６】なお、本発明は上述の実施例に限定され
ず、本発明の要旨を逸脱しない範囲で設計変更自由であ
り、例えば、ガス供給路３に連結されるガスボンベ１と
しては３本以上であってもよく、また、ガスボンベ１、
中間タンク２の液化ガスＧの許容容量も自由に設定する
ことができ、警報ランプ42が点灯する液面計40の液面レ
ベルとしても自由に変更することができる。さらに、液
面が所定レベルより低下したとき、警報音を発生するよ
うにするも自由である。The present invention is not limited to the above-described embodiments, and the design can be freely changed without departing from the gist of the present invention. For example, the number of gas cylinders 1 connected to the gas supply path 3 is three or more. May be, again, gas cylinder 1,
The permissible capacity of the liquefied gas G in the intermediate tank 2 can be freely set, and the liquid level of the liquid level gauge 40 in which the alarm lamp 42 is turned on can be freely changed. Furthermore, it is also free to generate an alarm sound when the liquid level drops below a predetermined level.
【００３７】[0037]
【発明の効果】本発明は上述の如く構成されているの
で、次に記載する効果を奏する。Since the present invention is configured as described above, it has the following effects.
【００３８】一のガスボンベ１の液化ガスＧが無くなっ
た際にも、中断させることなく発泡樹脂内へ液化ガスＧ
を注入することができ、製品には発泡していない部分が
生じることがなく（ロス部分を生じることなく）、低コ
ストにて高品質の安定した製品を提供することができ
る。また、一のガスボンベ１の液化ガスＧが無くなって
も発泡樹脂内へ液化ガスＧを注入することができるの
で、一のガスボンベ１の液化ガスＧを完全に使いきるこ
とができ、しかも、ガスボンベ１内の残量をチェックす
る必要がなくなり、作業が単純化する利点もある。Even when the liquefied gas G in the first gas cylinder 1 is exhausted, the liquefied gas G is not interrupted into the foamed resin.
Can be injected, and the product does not have a non-foamed part (without a loss part), and a stable product of high quality can be provided at low cost. Further, even if the liquefied gas G of the one gas cylinder 1 is exhausted, the liquefied gas G can be injected into the foamed resin, so that the liquefied gas G of the one gas cylinder 1 can be used up completely, and the gas cylinder 1 There is also an advantage that the work is simplified because there is no need to check the remaining amount inside.
【図１】本発明の一実施例を示す簡略全体図である。FIG. 1 is a simplified overall view showing an embodiment of the present invention.
【図２】簡略全体図である。FIG. 2 is a simplified overall view.
【図３】中間タンクの要部拡大断面図である。FIG. 3 is an enlarged sectional view of an essential part of an intermediate tank.
１ ガスボンベ ２ 中間タンク ３ ガス供給路 ４ 切換手段 ５ ガス注入路 ６ 検出手段 Ｇ 発泡用注入液化ガス 1 gas cylinder 2 intermediate tank 3 gas supply path 4 switching means 5 gas injection path 6 detection means G foaming injection liquefied gas
Claims (1)
のガスボンベと、該液化ガスが一旦貯蔵される中間タン
クと、上記ガスボンベが交換自在として連結されて該ガ
スボンベ内の液化ガスを上記中間タンク内へ供給するた
めのガス供給路と、該ガス供給路の一部に介装されて上
記複数本のガスボンベから択一的に上記中間タンクへ液
化ガスを送るための切換手段と、上記中間タンク内の液
化ガスを発泡樹脂内へ注入するためのガス注入路と、上
記中間タンク内の貯蔵量を検出する検出手段と、を備え
たことを特徴とする発泡用注入液化ガス供給装置。Claim: What is claimed is: 1. A plurality of gas cylinders filled with an injection liquefied gas for foaming, an intermediate tank for temporarily storing the liquefied gas, and the gas cylinder are exchangeably connected to each other in the gas cylinder. A gas supply path for supplying the liquefied gas into the intermediate tank, and a gas supply path for supplying the liquefied gas to the intermediate tank as an alternative from the plurality of gas cylinders interposed in the gas supply path. Injection for foaming, characterized by comprising a switching means, a gas injection path for injecting the liquefied gas in the intermediate tank into the foamed resin, and a detection means for detecting the storage amount in the intermediate tank. Liquefied gas supply device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19855091A JP2840892B2 (en) | 1991-07-11 | 1991-07-11 | Liquefied gas supply device for foaming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19855091A JP2840892B2 (en) | 1991-07-11 | 1991-07-11 | Liquefied gas supply device for foaming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0518498A true JPH0518498A (en) | 1993-01-26 |
| JP2840892B2 JP2840892B2 (en) | 1998-12-24 |
Family
ID=16393039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19855091A Expired - Lifetime JP2840892B2 (en) | 1991-07-11 | 1991-07-11 | Liquefied gas supply device for foaming |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2840892B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100400457B1 (en) * | 2001-05-10 | 2003-10-01 | 엘지전자 주식회사 | Gas supplier for making foamed plastic |
| WO2004070259A1 (en) * | 2003-02-06 | 2004-08-19 | Tai-Ho Choi | Automatic liquid changeover device and method using the vaporizer |
-
1991
- 1991-07-11 JP JP19855091A patent/JP2840892B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100400457B1 (en) * | 2001-05-10 | 2003-10-01 | 엘지전자 주식회사 | Gas supplier for making foamed plastic |
| WO2004070259A1 (en) * | 2003-02-06 | 2004-08-19 | Tai-Ho Choi | Automatic liquid changeover device and method using the vaporizer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2840892B2 (en) | 1998-12-24 |
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