JPH0698198B2 - Fire engine pressure regulator and fire engine - Google Patents
Fire engine pressure regulator and fire engineInfo
- Publication number
- JPH0698198B2 JPH0698198B2 JP14724690A JP14724690A JPH0698198B2 JP H0698198 B2 JPH0698198 B2 JP H0698198B2 JP 14724690 A JP14724690 A JP 14724690A JP 14724690 A JP14724690 A JP 14724690A JP H0698198 B2 JPH0698198 B2 JP H0698198B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- water
- regulator
- valve
- fire
- 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 - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 65
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 239000011550 stock solution Substances 0.000 description 12
- 239000006260 foam Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 235000015073 liquid stocks Nutrition 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、消防車に用いる消火栓等の圧力を有する水
源の圧力の調整器、及びこの圧力調整器を用いる消防車
に関するものである。Description: TECHNICAL FIELD The present invention relates to a pressure regulator of a water source having a pressure such as a fire hydrant used in a fire truck, and a fire truck using the pressure regulator.
（従来の技術） 泡消火液を放射する化学消防車は、同一エンジンで駆動
される放水ポンプと泡消火液原液ポンプとを有し、原液
ポンプによる原液を放水ポンプの吐出側に連結される泡
原液混合器にて放水流に混合するようにしている。(Prior Art) A chemical fire engine that emits a foam extinguishing liquid has a water discharge pump and a foam extinguishing liquid stock solution pump that are driven by the same engine, and the stock solution from the stock solution pump is connected to the discharge side of the water discharge pump. The stock solution mixer is used to mix the discharged water.
この化学消防車は、通常放水ポンプを消火水槽等ポンプ
位置以下の平常水源に連結したときに、混合器は泡原液
を正常な混合比率で水に混合し泡消火液を放射する。そ
してこの場合通常は放水ポンプの吐出圧力が５〜15kg/c
m2位に上下可変させても、混合器は正常な混合比率を維
持する。しかしこの範囲を越えると良好な混合比率が得
難い。In this chemical fire engine, when a normal water discharge pump is connected to a normal water source below the pump position such as a fire extinguisher tank, the mixer mixes the foam concentrate with water at a normal mixing ratio and emits the foam extinguishing liquid. And in this case, the discharge pressure of the water discharge pump is usually 5 to 15 kg / c.
The mixer maintains the normal mixing ratio even when the vertical position is changed to m 2 . However, if it exceeds this range, it is difficult to obtain a good mixing ratio.
しかしながらこのような化学消防車Ａを石油コンビナー
ト等で使用する場合、平常水源Ｓは勿論のこと５〜14kg
/cm2の水圧をもつ消火栓Ｔに直結して使用する場合が多
い（第２図参照）。However, when such a chemical fire engine A is used in a petroleum complex or the like, the normal water source S is of course 5-14 kg.
It is often used by directly connecting to a fire hydrant T with a water pressure of / cm 2 (see Fig. 2).
このような場合、放水ポンプの吐出圧力は消火栓の圧力
分高くなって混合器は泡原液を正常に混合出来ない。そ
のための対策として放水ポンプ駆動してその吐出圧力を
監視しながら、その圧力計から離れた所にある消火栓の
弁の開度を加減し消火栓の圧力を調整している。このよ
うな操作は火災の危急に際し必ずしも好ましい方法では
ない。In such a case, the discharge pressure of the water discharge pump increases by the pressure of the fire hydrant, and the mixer cannot normally mix the foamed liquid. As a countermeasure for this, the water discharge pump is driven and the discharge pressure is monitored, while the pressure of the fire hydrant is adjusted by adjusting the opening degree of the fire hydrant valve located away from the pressure gauge. Such an operation is not always preferable in case of emergency of fire.
そこで現実的には消防車２台を直列に連結し、一方は原
液ポンプを止めて放水ポンプのみ駆動して放水圧を調整
し、他方は放水ポンプを止めて原液ポンプを駆動し放水
圧に適合した原液注入圧にして、放水流に泡原液を混合
するという不経済な消防活動をしている。Therefore, realistically, two fire trucks are connected in series, one of which stops the stock solution pump and drives only the water discharge pump to adjust the water discharge pressure, and the other stops the water discharge pump and drives the stock solution pump to adapt to the water discharge pressure. It is an uneconomical fire fighting activity that mixes the foamed stock solution with the discharged water at the specified stock solution injection pressure.
そして、化学消防車に限らず一般の消防車においても、
吸水部に消火栓等の圧力を有する水源を連結して放水す
る場合はノズル圧力が異常に高くなつて正常な放水がで
きない。And not only in chemical fire engines, but also in general fire engines,
When a water source having a pressure such as a fire hydrant is connected to the water absorbing part to discharge water, the nozzle pressure becomes abnormally high and normal water discharge cannot be performed.
（発明が解決しようとする問題点） この発明は上述する問題点に鑑みて、有水圧の消火栓等
を水源にした場合、放水ポンプの吸水部の圧力を自動的
に下げて、放水ポンプの吐出圧力を適切な圧力にする圧
力調整器とこの圧力調整器を用いる消防車を提供するも
のである。(Problems to be Solved by the Invention) In view of the above-mentioned problems, the present invention automatically lowers the pressure of the water absorbing portion of the water discharge pump when a water-hydraulic fire hydrant or the like is used as the water source, and discharges the water discharge pump. The present invention provides a pressure regulator that adjusts the pressure to an appropriate pressure and a fire engine that uses this pressure regulator.
（問題点を解決するための手段） この発明の（１）消防車用圧力調整器はすなわち、弁の
ステムには小径のピストンと大径のピストンとを有し、
この小径のピストンには弁の入口圧力を、大径のピスト
ンは出口圧力をまた両ピストンの間には大気をそれぞれ
導き、両ピストンにかかる圧力のバランスによって弁を
開閉し消火栓等の水圧を調整する装置である。発明の
（２）はすなわち、発明の（１）の圧力調整器を用いそ
の出口を放水ポンプの吸水部に、入口を水源にそれぞれ
連結して、放水ポンプの吸入圧力を調整することを特徴
とする消防車である。(Means for Solving Problems) (1) The pressure regulator for a fire engine of the present invention has a small-diameter piston and a large-diameter piston in the stem of the valve,
The small-diameter piston guides the valve inlet pressure, the large-diameter piston the outlet pressure, and the atmosphere between the two pistons. The balance of the pressure on both pistons opens and closes the valve to adjust the water pressure of the fire hydrant. It is a device that does. (2) of the invention is characterized by using the pressure regulator of (1) of the invention to adjust the suction pressure of the water discharge pump by connecting the outlet to the water absorption part of the water discharge pump and the inlet to the water source. It is a fire engine that does.
実施例を化学消防車を例にとりさらに詳しく説明する。The embodiment will be described in more detail by taking a chemical fire engine as an example.
調整器１には弁２を有し、この弁２のステム３には、小
径のピストン４と大径のピストン５が設けてある。4a及
び5aは各ピストンの受圧部である。そして受圧部4aは導
管８によって入口６に通じ、受圧部5aは導管９によって
出口７に通じている。二つのピストン4,5の間の空所11
は通口12によって大気に通じている。The regulator 1 has a valve 2, and a stem 3 of the valve 2 is provided with a small-diameter piston 4 and a large-diameter piston 5. 4a and 5a are pressure receiving parts of each piston. The pressure receiving portion 4a communicates with the inlet 6 through the conduit 8, and the pressure receiving portion 5a communicates with the outlet 7 through the conduit 9. Void 11 between two pistons 4, 5
Is communicated to the atmosphere through the passage 12.
弁２は円筒形で該外側筒10に摺動可能に嵌合し、外側筒
10は入口６と出口７との間に設けられ複数の側口10aが
あけてある。そして弁２の端部2aと側口10aとによって
ゲートを構成している。The valve 2 has a cylindrical shape and is slidably fitted in the outer cylinder 10
10 is provided between the inlet 6 and the outlet 7 and has a plurality of side ports 10a. The end 2a of the valve 2 and the side opening 10a form a gate.
弁２には通口13、及びステム３の外側の隙間14は、共に
入口６と小径ピストン受圧部4aに連通し、入口６の圧力
が弁２に直接作用しない構造となっている。15は反発ば
ねで常に弁２を開くように作用している。The valve 2 has a through hole 13 and a gap 14 outside the stem 3, both of which communicate with the inlet 6 and the small diameter piston pressure receiving portion 4a so that the pressure at the inlet 6 does not directly act on the valve 2. Reference numeral 15 is a repulsion spring which constantly operates to open the valve 2.
化学消防車Ａは第３図のように、放水ポンプP1,原液ポ
ンプP2を同一エンジンによって駆動し、泡原液槽Ｌの原
液を原液ポンプP2で混合器Ｍにより放水中に注入してい
る。Ｎはノズルである。In the chemical fire engine A, as shown in FIG. 3, the water discharge pump P1 and the stock solution pump P2 are driven by the same engine, and the stock solution in the foam stock solution tank L is injected into the discharged water by the mixer M by the stock solution pump P2. N is a nozzle.
（作用） この調整器１は弁２の開度によって消火栓等の圧力を減
圧し、放水ポンプの吸入圧力が所定以下の圧力になる。
そしてこの弁２の開度は入口６の水圧力が作用する小径
のピストン４と、放水ポンプの吸水圧力が作用する大径
のピストン５、及びばね15の反発力とのバランス位置に
よって決まる。最初に調整器１を平常水源Ｓに連結し
て、この消防自動車の泡消火液を放水する場合について
説明する。(Operation) The regulator 1 reduces the pressure of the fire hydrant or the like according to the opening degree of the valve 2, so that the suction pressure of the water discharge pump becomes a predetermined pressure or less.
The opening of the valve 2 is determined by the balance position of the small diameter piston 4 on which the water pressure at the inlet 6 acts, the large diameter piston 5 on which the water suction pressure of the water discharge pump acts, and the repulsive force of the spring 15. First, the case where the regulator 1 is connected to the normal water source S and the foam extinguishing liquid of this fire engine is discharged will be described.
放水ポンプを駆動すると、調整器１の出口７と入口６の
圧力は大気圧力より若干低くかつほぼ等しくなる。よっ
て小径ピストン４と大径ピストン５に作用する圧力は、
大気圧力より低く大気圧である空所11とばね15の力の方
が大きいため、弁２は開いた状態を維持する。従って放
水ポンプは調整器を用いない場合と同様に吸水し、混合
器Ｍにおける泡原液を正常比率で混合する。When the water discharge pump is driven, the pressures at the outlet 7 and the inlet 6 of the regulator 1 are slightly lower than atmospheric pressure and almost equal. Therefore, the pressure acting on the small-diameter piston 4 and the large-diameter piston 5 is
Since the force of the space 11 and the pressure of the spring 15 which are lower than atmospheric pressure and atmospheric pressure are larger, the valve 2 remains open. Therefore, the water discharge pump absorbs water in the same manner as when the regulator is not used, and mixes the stock foam solution in the mixer M at a normal ratio.
放水ポンプP1の放水圧力を上げても、調整器１における
状態は変化しない。Even if the water discharge pressure of the water discharge pump P1 is increased, the state in the regulator 1 does not change.
次に調整器１を消火栓Ｔ等の圧力を有する水源に連結し
て運転すると弁２は開いているので、入口６と出口７の
圧力はほぼその水源の水圧となつて大気圧力より高く、
大径ピストン５は小径ピストン４、及びばね15を押して
弁２を閉じる方向に移動する。すなわち弁２の端部2aが
側口10aをふさぐようになる。放水ポンプを駆動してこ
の調整器１の出口７の圧力が下がると、大径ピストン５
に作用する圧力が低下し、弁２は開らく方向に移動する
がそれによって出口７の圧力は入口６の圧力に近付き、
自動的に弁２は所定位置で停止し、常に放水ポンプ吸水
部は低い圧力、例えば0.3〜1.5kg/cm2程度に保たれる。
それによって放水ポンプの吐出圧力も低く押さえられて
混合器Ｍは正常に泡原液を混合できる。Next, when the regulator 1 is connected to a water source having a pressure such as the fire hydrant T and operated, the valve 2 is opened, so that the pressures at the inlet 6 and the outlet 7 are almost equal to the water pressure of the water source and higher than the atmospheric pressure,
The large-diameter piston 5 pushes the small-diameter piston 4 and the spring 15 to move in the direction of closing the valve 2. That is, the end 2a of the valve 2 closes the side opening 10a. When the pressure at the outlet 7 of the regulator 1 is reduced by driving the water discharge pump, the large-diameter piston 5
The pressure acting on the valve 2 decreases and the valve 2 moves in the opening direction, whereby the pressure at the outlet 7 approaches the pressure at the inlet 6,
The valve 2 automatically stops at a predetermined position, and the water discharge pump water absorption part is always kept at a low pressure, for example, about 0.3 to 1.5 kg / cm 2 .
As a result, the discharge pressure of the water discharge pump is also kept low, and the mixer M can normally mix the foamed liquid.
（実施例） 調整器１の流量制御は弁２と外側筒10のゲートの開閉機
構を採用しているが、この弁本体に水流や入口、出口の
圧力が直接作用しない構造のものであれば他の構造であ
ってもこの発明の範囲に含まれる。(Example) The flow control of the regulator 1 employs the opening / closing mechanism of the gate of the valve 2 and the outer cylinder 10. However, if the structure is such that the water flow and the pressure at the inlet / outlet do not directly act on this valve body. Other structures are also included in the scope of the present invention.
具体的にこの調整器１において大小径のピストンの面積
比を1:7〜1:15として、消火栓圧５〜15kg/cm2に連結し
て使用すると、放水量を300〜3500l/minと可変しても、
放水ポンプの吸水部圧力はほぼ0.3〜1.5kg/cm2になる。Specifically, in this regulator 1, when the area ratio of large and small diameter pistons is set to 1: 7 to 1:15 and the fire hydrant pressure is connected to 5 to 15 kg / cm 2 and used, the water discharge rate can be varied from 300 to 3500 l / min. Even if
The pressure at the water intake of the water discharge pump is approximately 0.3 to 1.5 kg / cm 2 .
平常水源にこの調整器を用いる際、十分な流量を得たい
場合は、調整器にバイパス通路を付加してもよい。When using this regulator for a normal water source, if it is desired to obtain a sufficient flow rate, a bypass passage may be added to the regulator.
調整器１はあらかじめ車体に備えるか、別に用意して消
火栓使用時のみ用いることは任意である。It is optional to equip the vehicle body with the regulator 1 in advance or to separately prepare it and use it only when using the fire hydrant.
（発明の効果） この発明の消防車は調整器を放水ポンプの吸水部に連結
することによって、平常水源、消火栓等の圧力を有する
水源を区別することなく正常な放水圧力を得られ化学消
防車に用いて、常に良質な泡消火液を放射でき完全な消
火性能を発揮できる。(Effects of the Invention) In the fire engine of the present invention, by connecting the regulator to the water absorption part of the water discharge pump, a normal water discharge pressure can be obtained without distinguishing between a normal water source and a water source having a pressure such as a fire hydrant. By using it, you can always radiate high-quality foam extinguishing liquid and exert perfect fire extinguishing performance.
実施例のように調整器の弁には通口を設けて、入口圧力
の影響を受けない構造としているので圧力調整機構の設
計が容易で性能の良い装置を得ることができる。As in the embodiment, the valve of the regulator is provided with a through hole so as not to be influenced by the inlet pressure, so that the pressure adjusting mechanism can be easily designed and a device with good performance can be obtained.
第１図はこの発明に係わる消防車用圧力調整器の実施例
を示す断面図、第２図はこの圧力調整器を化学消防車に
用いた説明図、第３図は配管系統図である。 １……圧力調整器、２……弁、４……小径ピストン ５……大径ピストン、６……入口、７……出口FIG. 1 is a sectional view showing an embodiment of a pressure regulator for a fire engine according to the present invention, FIG. 2 is an explanatory view of using this pressure regulator in a chemical fire engine, and FIG. 3 is a piping system diagram. 1 ... Pressure regulator, 2 ... Valve, 4 ... Small diameter piston 5 ... Large diameter piston, 6 ... Inlet, 7 ... Outlet
Claims (2)
ストンとを有し、この小径のピストンは弁の入口圧力
を、大径のピストンは出口圧力をまた両ピストンの間に
は大気をそれぞれ導き、両ピストンにかかる圧力のバラ
ンスによって弁を開閉し消火栓等の水源の水圧を調整す
ることを特徴とする消防車用圧力調整器。1. A stem of a valve has a small-diameter piston and a large-diameter piston, the small-diameter piston serves as the inlet pressure of the valve, the large-diameter piston serves as the outlet pressure, and the atmosphere between the two pistons is the atmospheric pressure. The pressure regulator for fire engines is characterized by adjusting the water pressure of a water source such as a fire hydrant by opening and closing the valve according to the balance of pressure applied to both pistons.
の吸水部に、入口は水源にそれぞれ連結して、放水ポン
プの吸入圧力を調節することを特徴とする消防車。2. The fire engine according to claim 1, wherein an outlet of the regulator is connected to a water absorption portion of the water discharge pump, and an inlet of the regulator is connected to a water source to adjust suction pressure of the water discharge pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14724690A JPH0698198B2 (en) | 1990-06-07 | 1990-06-07 | Fire engine pressure regulator and fire engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14724690A JPH0698198B2 (en) | 1990-06-07 | 1990-06-07 | Fire engine pressure regulator and fire engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0440968A JPH0440968A (en) | 1992-02-12 |
| JPH0698198B2 true JPH0698198B2 (en) | 1994-12-07 |
Family
ID=15425888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14724690A Expired - Fee Related JPH0698198B2 (en) | 1990-06-07 | 1990-06-07 | Fire engine pressure regulator and fire engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0698198B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022012453A1 (en) * | 2020-07-16 | 2022-01-20 | 哲弗智能系统（上海）有限公司 | Smart heat-triggered fire extinguishing apparatus and method, battery pack, energy storage system, and vehicle |
-
1990
- 1990-06-07 JP JP14724690A patent/JPH0698198B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022012453A1 (en) * | 2020-07-16 | 2022-01-20 | 哲弗智能系统（上海）有限公司 | Smart heat-triggered fire extinguishing apparatus and method, battery pack, energy storage system, and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0440968A (en) | 1992-02-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |