JP4803712B2 - Gas stabilizer flame stabilizer - Google Patents
Gas stabilizer flame stabilizer Download PDFInfo
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- JP4803712B2 JP4803712B2 JP2005250829A JP2005250829A JP4803712B2 JP 4803712 B2 JP4803712 B2 JP 4803712B2 JP 2005250829 A JP2005250829 A JP 2005250829A JP 2005250829 A JP2005250829 A JP 2005250829A JP 4803712 B2 JP4803712 B2 JP 4803712B2
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- 239000003381 stabilizer Substances 0.000 title claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 45
- 239000001301 oxygen Substances 0.000 claims description 45
- 229910052760 oxygen Inorganic materials 0.000 claims description 45
- 239000007789 gas Substances 0.000 claims description 26
- 239000002737 fuel gas Substances 0.000 claims description 16
- 238000005192 partition Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
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Description
本発明は、複数本の切断トーチを鋼板等の被切断材に沿って移動させて同時に切断するガス切断機に関し、該切断トーチの火炎を容易に安定状態に調整できるようにしたガス切断機の火炎安定器に係るものである。 The present invention relates to a gas cutting machine that moves a plurality of cutting torches along a material to be cut such as a steel plate and simultaneously cuts them, and relates to a gas cutting machine that can easily adjust the flame of the cutting torch to a stable state. It concerns flame stabilizers.
燃料ガスと予熱酸素と切断酸素をそれぞれヘッダー管に供給し、各ヘッダー管に設けた複数の分岐口からホースを通して切断トーチに供給し、複数本の切断トーチにより被切断材を切断するガス切断機が用いられているが、各ヘッダー管に供給されるガス等は、内部圧力が先端に進む程拡散し管内の圧力供給バランスが崩れるから、切断トーチの火炎はヘッダー管に形成した分岐口の位置によりばらつきを生じやすく、火炎を中性炎に安定させることが非常に面倒である。 Gas cutting machine that supplies fuel gas, preheated oxygen, and cutting oxygen to the header pipes, supplies the cutting torch through the hose from a plurality of branch ports provided in each header pipe, and cuts the material to be cut by the plurality of cutting torches However, the gas supplied to each header pipe diffuses as the internal pressure advances to the tip, and the pressure supply balance in the pipe is lost, so the flame of the cutting torch is positioned at the branch port formed in the header pipe. Due to this, it is easy to cause variations, and it is very troublesome to stabilize the flame to a neutral flame.
切断トーチに使用する切断酸素、予熱酸素、燃料ガス(例えばLPG)の圧力、流量等は、一例として図6に示す諸元に示すように、火口の大きさや被切断材の厚さに応じて確立されているから、各切断トーチに諸元通り供給すれば、火炎は安定するはずであるが、その調整は簡単ではない。具体的に説明すると、例えば図7に示すように従来の切断機では、ヘッダー管(H)に設けた複数の分岐口にホースを直接接続して複数の切断トーチ(T1)、(T2)・・・にガス等を供給するよう構成されているから、その火炎を調整する場合、最初に各トーチにあるバルブ(図示略)をすべて閉じてヘッダー管内に所定の調整圧力のガスを供給すると、その時点では各ホース内の調整圧力も同じ圧力に維持することができる。そして、1番の切断トーチ(T1)のバルブを開いて点火すると、上記のように所定の調整圧力が供給されているから、バルブを制御して容易に火炎が中性炎となるよう調整することができる。ところが、2番(T2)、3番(T3)・・・と順次点火していくと、1番(T1)に供給されているガスの圧力が低下し、以後順番に点火する毎に各トーチの火炎が弱火となってしまうから、上記火炎が乱れ、再調整しなければならなくなる。このように最初の調整圧力に基づいて正しく中性炎を維持できるようバルブを調整できるのは、1番の切断トーチ(T1)だけであり、他のトーチはできない。 The cutting oxygen, preheating oxygen, fuel gas (for example, LPG) pressure, flow rate, etc. used for the cutting torch are shown in FIG. 6 as an example, depending on the size of the crater and the thickness of the material to be cut. Since it is established, the flame should be stable if it is supplied to each cutting torch as it is, but its adjustment is not easy. More specifically, for example, as shown in FIG. 7, in a conventional cutting machine, a plurality of cutting torches (T1), (T2) and (T2) are connected by directly connecting hoses to a plurality of branch ports provided in the header pipe (H).・ ・ Because it is configured to supply gas, etc., when adjusting the flame, when all the valves (not shown) in each torch are first closed and gas with a predetermined adjustment pressure is supplied into the header pipe, At that time, the adjustment pressure in each hose can be maintained at the same pressure. When the valve of the first cutting torch (T1) is opened and ignited, the predetermined adjustment pressure is supplied as described above. Therefore, the valve is controlled to easily adjust the flame to a neutral flame. be able to. However, if the ignition is sequentially performed as No. 2 (T2), No. 3 (T3),. Since the flame becomes a low flame, the flame is disturbed and must be readjusted. Thus, only the first cutting torch (T1) can adjust the valve so that the neutral flame can be correctly maintained based on the first adjustment pressure, and the other torch cannot.
ヘッダー管から分岐した副ガスラインに手動の圧力調整弁を設けて主ラインから供給されるガスの圧力を調整することが知られている(例えば特許文献1参照)が、手動の圧力調整器は圧力流量計を見ながら微量に調整しなければならず、実質的にバルブによる調整と変わらない。また、コンピューター等の制御装置を用いて調整することも知られているが、装置が複雑で経済的に得られない。
本発明の解決課題は、複数の切断トーチの火炎を容易に調整でき、従来のように手動で圧力調整する必要もなく、微調整が不要で構成が簡単であり、経済的に得られるガス切断機の火炎安定器を提供することである。 The problem to be solved by the present invention is that it is possible to easily adjust the flame of a plurality of cutting torches, there is no need to manually adjust the pressure as in the prior art, no fine adjustment is required, the configuration is simple, and gas cutting that is economically obtained Is to provide a flame stabilizer for the machine.
本発明によれば、燃料ガス、予熱酸素、切断酸素をそれぞれヘッダー管に供給し各ヘッダー管に設けた複数の分岐口からホースを通して切断トーチに供給し、複数本の切断トーチにより被切断材を切断するようにしたガス切断機において、上記ヘッダー管の分岐口に接続されるチャンバーを有し、該チャンバー内に上記分岐口に通じる一次側圧力室と上記ホースに通じる二次側圧力室を形成し、該一次側圧力室と二次側圧力室間に隔壁を設け、該隔壁にオリフィスを形成したことを特徴とするガス切断機の火炎安定器が提供され、上記課題が解決される。 According to the present invention, fuel gas, preheated oxygen, and cutting oxygen are respectively supplied to the header pipe and supplied to the cutting torch through a plurality of branch ports provided in each header pipe, and the material to be cut is supplied by the plurality of cutting torches. In a gas cutting machine adapted to cut, a chamber connected to the branch port of the header pipe is formed, and a primary pressure chamber communicating with the branch port and a secondary pressure chamber communicating with the hose are formed in the chamber. And the flame stabilizer of the gas cutting machine characterized by providing the partition between this primary side pressure chamber and the secondary side pressure chamber, and having formed the orifice in this partition is provided, and the said subject is solved.
本発明は上記のように構成され、図1に示すように、ヘッダー管(1)の分岐口(2)と切断トーチ(3)のホース(4)の間にチャンバー(5)を設け、該チャンバー(5)内に上記分岐口(2)に通じる一次側圧力室(6)とホース(4)に通じる二次側圧力室(7)を形成し、該一次側圧力室(6)と二次側圧力室(7)間にオリフィス(8)を有する隔壁(9)を設けたので、複数の分岐口に接続されている各チャンバーの一次側圧力室(6)にはそれぞれヘッダー管に供給された圧力と同じ内部圧力のガスや酸素を供給することができ、この圧力を隔壁により維持することができる。そして、各チャンバーには1本のホースを介して1つの切断トーチが接続されているだけであるから、1つの切断トーチのバルブを開いて火炎を調整しても他の分岐口に接続された他のチャンバーの一次側圧力室の圧力は上記供給圧力に維持されたままである。したがって、他の切断トーチに影響を与えないので、各切断トーチの火炎を容易に調整でき、火炎を安定させることができる。また、図6の諸元の一例に示すように、切断酸素、予熱酸素、燃料ガスの流量が規定されているから、各流量に応じて上記隔壁のオリフィスの開口面積や開口位置を変えることにより容易に対応することができる。 The present invention is configured as described above. As shown in FIG. 1, a chamber (5) is provided between the branch port (2) of the header pipe (1) and the hose (4) of the cutting torch (3). A primary pressure chamber (6) communicating with the branch port (2) and a secondary pressure chamber (7) communicating with the hose (4) are formed in the chamber (5), and the primary pressure chamber (6) and two Since the partition wall (9) having the orifice (8) is provided between the secondary pressure chambers (7), the primary pressure chambers (6) connected to the plurality of branch ports are respectively supplied to the header pipes. The gas or oxygen having the same internal pressure as the generated pressure can be supplied, and this pressure can be maintained by the partition wall. And since only one cutting torch is connected to each chamber through one hose, even if the valve of one cutting torch is opened and the flame is adjusted, it is connected to the other branch port. The pressure in the primary pressure chamber of the other chamber remains maintained at the supply pressure. Therefore, since it does not affect other cutting torches, the flame of each cutting torch can be easily adjusted and the flame can be stabilized. In addition, as shown in the example of the specifications of FIG. 6, the flow rates of the cutting oxygen, preheated oxygen, and fuel gas are defined. By changing the opening area and opening position of the orifice of the partition wall according to each flow rate, It can be easily handled.
図2は、本発明を適用したガス切断機のブロック図を示し、切断酸素供給ライン(10)、燃料ガス供給ライン(11)及び予熱酸素供給ライン(12)には、それぞれ切断酸素圧力調整器(13)、切断酸素ON・OFFゲージ(14)、ガスHI圧力調整器(15)、ガスLOW圧力調整器(16)、予熱酸素HI圧力調整器(17)及び予熱酸素LOW圧力調整器(18)が設けられ、各供給ライン(10)、(11)、(12)に電磁弁(19)、(20)、(21)を設けてガス切断機NCコントローラー(22)で全体の制御をしている。 FIG. 2 shows a block diagram of a gas cutting machine to which the present invention is applied, and a cutting oxygen supply line (10), a fuel gas supply line (11), and a preheating oxygen supply line (12) are each provided with a cutting oxygen pressure regulator. (13), cutting oxygen ON / OFF gauge (14), gas HI pressure regulator (15), gas LOW pressure regulator (16), preheating oxygen HI pressure regulator (17) and preheating oxygen LOW pressure regulator (18 ), And solenoid valves (19), (20), (21) are provided in the supply lines (10), (11), (12), and the gas cutter NC controller (22) controls the entire system. ing.
上記各供給ライン(10)、(11)、(12)には、切断酸素ヘッダー管(1a)、ガスヘッダー管(1b)及び予熱酸素ヘッダー管(1c)が接続され、各ヘッダー管(1a)、(1b)、(1c)に設けた複数の分岐口に連通する切断酸素ホース(4a)、ガスホース(4b)、予熱酸素ホース(4c)が切断吹管(23)及び火口チップ(24)を有する切断トーチ(3)に接続され、切断酸素バルブ(25)、ガスバルブ(26)及び予熱酸素バルブ(27)でトーチへの流量を制御するよう構成されている。これらの構成、作用等は公知のガス切断機とほぼ同様である。 A cutting oxygen header pipe (1a), a gas header pipe (1b) and a preheated oxygen header pipe (1c) are connected to the supply lines (10), (11), (12), and each header pipe (1a) is connected. The cut oxygen hose (4a), the gas hose (4b), and the preheated oxygen hose (4c) communicated with the plurality of branch ports provided in (1b) and (1c) have a cut blow tube (23) and a crater tip (24). Connected to the cutting torch (3), the cutting oxygen valve (25), the gas valve (26) and the preheating oxygen valve (27) are configured to control the flow rate to the torch. These structures and operations are almost the same as those of a known gas cutter.
而して、本発明では、上記ヘッダー管(1a)、(1b)、(1c)の分岐口と各ホース(4a)、(4b)、(4c)の間にチャンバーが設けられている。図3〜図5は、切断酸素、燃料ガス及び予熱酸素用の各チャンバー(5a)、(5b)、(5c)を示し、各チャンバーは、基本的に同じ構造であって、分岐口に通じる流入口(28)を有する一次側圧力室(6)を形成する一次側本体(29)とホースに通じる流出口(30)を有する二次側圧力室(7)を形成する二次側本体(31)を具備し、各本体(29)、(31)は筒状に形成され、シール部材(32)を介してねじ係合されている。 Thus, in the present invention, a chamber is provided between the branch port of the header pipe (1a), (1b), (1c) and the respective hoses (4a), (4b), (4c). 3 to 5 show the chambers (5a), (5b) and (5c) for cutting oxygen, fuel gas and preheated oxygen, each chamber having basically the same structure and leading to the branch port. A primary body (29) that forms a primary pressure chamber (6) having an inlet (28) and a secondary body that forms a secondary pressure chamber (7) having an outlet (30) leading to a hose ( 31), each main body (29), (31) is formed in a cylindrical shape, and is screw-engaged via a seal member (32).
上記一次側圧力室(6)と二次側圧力室(7)の内径はそれぞれ流入口(28)、流出口(30)より拡径され、一次側圧力室(6)の容積が二次側圧力室(7)の容積より大きく形成されており、該圧力室の間には、隔壁(9)が設けられ、一次側圧力室(6)にはフイルター(33)が設けられている。上記隔壁(9)は周縁に一体的なフランジ部(34)を有し、上記一次側本体(29)と二次側本体(31)をねじ係合する際に上記フランジ部(34)とフイルター(33)を該本体(29)、(31)間で挟着している。なお、フランジ部を形成せずに、適宜のスペーサー(図示略)を設けてもよい。 The inner diameters of the primary pressure chamber (6) and the secondary pressure chamber (7) are expanded from the inlet (28) and the outlet (30), respectively, and the volume of the primary pressure chamber (6) is increased to the secondary side. It is formed larger than the volume of the pressure chamber (7), a partition wall (9) is provided between the pressure chambers, and a filter (33) is provided in the primary pressure chamber (6). The partition wall (9) has an integral flange portion (34) at the periphery, and when the primary side main body (29) and the secondary side main body (31) are screw-engaged, the flange portion (34) and the filter (33) is sandwiched between the main bodies (29) and (31). An appropriate spacer (not shown) may be provided without forming the flange portion.
上記隔壁(9)には、オリフィス(8)が形成されている。該オリフィス(8)は、小さすぎると、火口の諸元に対して中性炎を作るための流量が不足し、大きすぎると一次側圧力室に所定の圧力を維持できず、火炎が不安定になるため切断酸素、燃料ガス、予熱酸素に応じて最適な流量が得られるような開口面積や開口部位等が選定され、また夏期、冬期ではガス、酸素の気化状態が異なるため年間を通して安定して供給できるようにしてある。 An orifice (8) is formed in the partition wall (9). If the orifice (8) is too small, the flow rate for creating a neutral flame with respect to the specifications of the crater is insufficient, and if it is too large, the predetermined pressure cannot be maintained in the primary pressure chamber and the flame is unstable. Therefore, the opening area and the opening part that can obtain the optimal flow rate are selected according to the cutting oxygen, fuel gas, and preheated oxygen, and the vaporization state of gas and oxygen is different in summer and winter. Can be supplied.
図2に示す実施例では、図6に示す諸元の火口NO.0番〜NO.5番に適用できるように形成され、図3に示すように切断酸素のオリフィス(8a)と図4に示す燃料ガスのオリフィス(8b)は隔壁(9)のほぼ中央部に形成され、切断酸素用の上記オリフィス(8a)は標準火口の0番から5番まで酸素供給できる大きさに形成され、燃料ガス用のオリフィス(8b)は中性炎または強炎にできる流量を供給可能な大きさに形成され、その開口面積は切断酸素用のオリフィス(8a)よりも小さく形成されている。また、予熱酸素用のオリフィス(8c)は図5に示すように、酸素供給量を多くして火炎温度を上げることができるよう隔壁の周辺部に複数設けてある。 In the embodiment shown in FIG. 2, the crater NO. No. 0 to NO. The cutting oxygen orifice (8a) and the fuel gas orifice (8b) shown in FIG. 4 are formed at substantially the center of the partition wall (9) as shown in FIG. The above-mentioned orifice (8a) is formed in a size capable of supplying oxygen from the standard crater No. 0 to No. 5, and the fuel gas orifice (8b) is sized to supply a flow rate capable of generating a neutral flame or a strong flame. The opening area is smaller than the orifice (8a) for cutting oxygen. Further, as shown in FIG. 5, a plurality of preheated oxygen orifices (8c) are provided at the periphery of the partition wall so that the oxygen supply amount can be increased to raise the flame temperature.
上記のような条件を満足するよう12月から7月までテストを繰り返し、ガスの供給源圧力0.06MPa、酸素の供給源圧力0.75MPaとし、多本数の切断トーチでも容易に中性炎を作り出せる流量を供給できるよう実験した結果によれば、切断酸素用のオリフィス(8a)を直径2mmの円孔とし、燃料ガス用のオリフィス(8b)を直径1.2mmの円孔とし、予熱酸素用のオリフィス(8c)は、直径1.2mmの3つの円孔を120度間隔で周辺部に開口させたところ、容易に中性炎を得ることができた。 The test was repeated from December to July so that the above conditions were satisfied, the gas supply pressure was 0.06 MPa, the oxygen supply pressure was 0.75 MPa, and neutral flames were easily generated even with multiple cutting torches. According to the result of an experiment to be able to supply a flow rate that can be produced, the cutting oxygen orifice (8a) is a 2 mm diameter circular hole, and the fuel gas orifice (8b) is a 1.2 mm diameter circular hole for preheating oxygen. As for the orifice (8c), when three circular holes having a diameter of 1.2 mm were opened at the periphery at intervals of 120 degrees, a neutral flame could be easily obtained.
上記の構成により、各ヘッダー管(1a)、(1b)、(1c)からホース(4a)、(4b)、(4c)に供給される切断酸素、燃料ガス及び予熱酸素は、上記各チャンバー(5a)、(5b)、(5c)の一次側圧力室(6)にほぼ均一な圧力で供給され、隔壁(9)により所定の供給圧力に維持される。この状態で1番目の切断トーチから順に点火して火炎を調整すれば、安定した中性炎を容易に得ることができる。 With the above configuration, the cutting oxygen, fuel gas, and preheated oxygen supplied from the header pipes (1a), (1b), (1c) to the hoses (4a), (4b), (4c) 5a), (5b), and (5c) are supplied to the primary pressure chamber (6) at a substantially uniform pressure, and are maintained at a predetermined supply pressure by the partition wall (9). If the flame is adjusted by sequentially igniting from the first cutting torch in this state, a stable neutral flame can be easily obtained.
1 ヘッダー管
3 切断トーチ
5 チャンバー
6 一次側圧力室
7 二次側圧力室
8 オリフィス
9 隔壁
28 流入口
29 一次側本体
30 流出口
31 二次側本体
1
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JPH0683162U (en) * | 1993-04-30 | 1994-11-29 | 株式会社セントラルユニ | Gas cutting machine |
JPH0768378A (en) * | 1993-09-02 | 1995-03-14 | Koike Sanso Kogyo Co Ltd | Cutting device |
JPH09225633A (en) * | 1996-02-22 | 1997-09-02 | Tanaka Seisakusho Kk | Gas cutting device |
JPH1080764A (en) * | 1996-09-09 | 1998-03-31 | Tanaka Seisakusho Kk | Cutting machine |
JPH10175066A (en) * | 1996-12-16 | 1998-06-30 | Tanaka Seisakusho Kk | Cutting machine |
JPH10266899A (en) * | 1997-03-26 | 1998-10-06 | Tokyo Gas Co Ltd | Pressure fluctuation absorber and fluid consumption device |
JP3967578B2 (en) * | 2001-10-22 | 2007-08-29 | 株式会社ガスター | Combustion equipment |
-
2005
- 2005-08-31 JP JP2005250829A patent/JP4803712B2/en not_active Expired - Fee Related
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