CN101357255A - Involute arc nozzle fire extinguishing sprinkler head - Google Patents
Involute arc nozzle fire extinguishing sprinkler head Download PDFInfo
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- CN101357255A CN101357255A CNA2008101965656A CN200810196565A CN101357255A CN 101357255 A CN101357255 A CN 101357255A CN A2008101965656 A CNA2008101965656 A CN A2008101965656A CN 200810196565 A CN200810196565 A CN 200810196565A CN 101357255 A CN101357255 A CN 101357255A
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- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 abstract description 24
- 239000007788 liquid Substances 0.000 abstract description 8
- 239000006260 foam Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 230000009975 flexible effect Effects 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract description 3
- 239000012141 concentrate Substances 0.000 abstract 1
- 230000001934 delay Effects 0.000 abstract 1
- 239000007921 spray Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
Description
技术领域 technical field
本发明属于消防灭火器材技术领域,具体涉及机械类流体喷洒灭火剂灭火装置的灭火喷洒头。The invention belongs to the technical field of fire extinguishing equipment, and in particular relates to a fire extinguishing spray head of a mechanical fluid spraying fire extinguishing agent fire extinguishing device.
背景技术 Background technique
为了防止和扑灭地面或高处泄露流向地面的油类火灾,在地面上布置消防灭火喷洒头,自下向上喷洒灭火剂,尤其是在飞机库等场所,常用这类喷头喷洒水或水成膜泡沫液等灭火剂。现有这类消防灭火装置是采用圆环型喷口槽的喷头,从圆环喷口喷出的水成膜灭火剂成圆环形状,靠泡沫液自身扩散覆盖油面来灭火,既浪费灭火剂又延误灭火时间。In order to prevent and extinguish oil fires that leak from the ground or high places and flow to the ground, fire extinguishing sprinklers are arranged on the ground, and the fire extinguishing agent is sprayed from bottom to top, especially in places such as hangars, such sprinklers are often used to spray water or water to form a film Fire extinguishing agents such as foam liquid. Existing fire extinguishing device of this type is to adopt the shower head of ring-shaped spout groove, and the aqueous film-forming fire extinguishing agent sprayed from the ring spout forms a ring shape, and the fire is extinguished by the foam liquid self-diffusion covering the oil surface, which not only wastes the fire extinguishing agent but also Delay the fire fighting time.
发明内容 Contents of the invention
为了解决现有圆环形喷口槽喷洒头既消费灭火剂又延误灭火时间的问题,本发明提供一种渐开线弧形喷口消防灭火喷洒头。In order to solve the problem of consuming fire extinguishing agent and delaying the fire extinguishing time of the existing circular spout groove sprinkler head, the present invention provides a fire extinguishing sprinkler head with involute arc spout.
实现上述目的的结构改进技术方案如下:The structural improvement technical scheme that realizes above-mentioned purpose is as follows:
一种渐开线弧形喷口消防灭火喷洒头,包括喷洒头体、轴承和连接管,喷洒头体为轴向一端设有内凹台阶的圆柱体,其内凹台阶端通过轴承连接着连接管,另一端均布着二个至四个喷口槽,其特征在于:A fire-fighting sprinkler head with an involute arc nozzle, including a sprinkler head body, a bearing and a connecting pipe. The sprinkler head body is a cylinder with an inner concave step at one end in the axial direction, and the inner concave step end is connected to the connecting pipe through the bearing. , the other end is evenly distributed with two to four spout grooves, characterized in that:
所述喷口槽沿径向为渐开线形;渐开线形喷口槽4起始端B端的喷射角为70-85度,起始端B端喷口槽入口的槽宽为0.6~3.0mm,出口的槽宽为0.5~2.8mm;渐开线形喷口槽4终止端C端的喷射角为40~45度,终止端C端喷口槽的入口槽宽为0.6~2.6mm,槽的出口宽为0.5~2.5mm;渐开线基圆半径r为10~15mm。The spout slot is involute in the radial direction; the jet angle at the B end of the
所述喷洒头体直径为40~120mm,厚度为10~16mm。The diameter of the sprinkler head body is 40-120mm, and the thickness is 10-16mm.
所述轴承为单面密封带内圈防水滚针轴承。The bearing is a waterproof needle roller bearing with a single-sided seal and an inner ring.
该喷洒头的喷口槽采用的渐开线方程为:x=r(cost+tsint),y=r(sint-tcost),其中r为基圆半径,取值为10~16mm;t为展角,其单位为弧度,t取值为90°~170°,喷洒头的横截面的圆心为渐开线的圆点;根据抛射体方程:R=(v*v*sin2θ)/g,H=(v*v*sin2θ)/(2g),在抛射角θ为45度时,抛射的距离最远,在喷口槽的不同点采用不同抛射角的方法,使从渐开线型喷射口喷出的灭火剂由近及远的射出形成一个渐开线面,喷洒头上均匀分布2~4个渐开线形喷口槽,在灭火剂通过喷口槽时,在灭火剂压力的作用下,喷洒头获得一个切向力,在这个切向力的作用下,喷洒头体可以自旋转,使喷洒出的灭火剂形成一圆饼形,铺盖在喷头周围火焰的油面上,有利于灭火。本喷洒头,适用于包括水和水成膜泡沫液等液体灭火剂。可在短时间内将火扑灭,使用灭火剂少,灭火成本低,提高灭火效率,且使用方便、灵活机动,省时高效,适用于扑灭飞机库等的油面火灾。The involute equation adopted by the nozzle groove of the sprinkler head is: x=r(cost+tsint), y=r(sint-tcost), where r is the radius of the base circle, and the value is 10-16mm; t is the spread angle , the unit is radian, the value of t is 90°~170°, the center of the cross section of the sprinkler head is the dot of the involute line; according to the projectile equation: R=(v*v*sin2θ)/g, H= (v*v*sin2θ)/(2g), when the projecting angle θ is 45 degrees, the projecting distance is the farthest, and different projecting angles are used at different points of the nozzle groove to make the involute ejection The fire extinguishing agent is injected from near to far to form an involute surface, and 2 to 4 involute nozzle grooves are evenly distributed on the sprinkler head. When the fire extinguishing agent passes through the nozzle grooves, under the action of the pressure of the fire extinguishing agent, the sprinkler head gets A tangential force, under the action of this tangential force, the sprinkler head body can rotate by itself, so that the sprayed fire extinguishing agent forms a circular cake shape, covering the oil surface of the flame around the sprinkler head, which is beneficial to fire extinguishing. The sprinkler head is suitable for liquid fire extinguishing agents including water and aqueous film-forming foam liquid. The fire can be extinguished in a short time, less fire extinguishing agent is used, the fire extinguishing cost is low, and the fire extinguishing efficiency is improved. It is convenient to use, flexible and maneuverable, time-saving and efficient, and is suitable for extinguishing oil surface fires in hangars and the like.
附图说明 Description of drawings
图1为本发明结构示意图,Fig. 1 is a schematic diagram of the structure of the present invention,
图2为图1的俯视图。FIG. 2 is a top view of FIG. 1 .
具体实施方式 Detailed ways
下面结合附图,通过实施例对本发明作进一步地说明。The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.
实施例1:Example 1:
参见图1和图2,一种渐开线弧形喷口消防灭火喷洒头包括喷洒头体1、轴承2和连接管3,喷洒头体1是一个直径为100mm,厚度为13mm的圆柱体,其轴向一端设有内凹台阶5的圆柱体,其内凹台阶端通过轴承2连接着连接管3;另一端均布着四个喷口槽,喷口槽沿径向为渐开线形,圆心为渐开线原点;渐开线方程为:x=r(cost+tsint),y=r(sint-tcost),其中r为基圆半径,取值14mm,t为展角,其单位为弧度,t取值为90°~170°,90°为渐开线喷口槽4的起始端B端,170°为渐开线喷口槽4的终止端C端,喷口槽4下方入口和上方出口成一定的喷射角,喷射角的大小从喷洒头体渐开线起始端B端喷口到渐开线终止端C端的喷口均匀变化,喷口槽4下方入口和上方出口的宽度是均匀变化的,渐开线喷口槽4的起始端B端的喷射角为85°,喷射出的灭火剂较近,这儿上面喷出口的宽度为1mm,下面入口的宽度为1.4mm;渐开线喷口槽4的终止端C端的喷射角为45°,喷射出的灭火剂最远,这儿喷洒头体上面出口的宽度为2mm,下面入口的宽度为2.6mm,喷射出的灭火剂较多;在灭火剂通过喷口槽4时,由于压力作用于有喷射角的喷口槽,使得喷洒头获得一旋转的切向力,喷洒头体1和连接管3之间用轴承2连接,在这个切向力的作用下,喷洒头体可以自旋转;连接管3的长度为200mm,外直径为32mm,一端有M32外螺纹,用于和消防管道连接,另一端和轴承2连接;轴承2采用外径90mm,内径45mm的NA4913型单面密封带内圈防水滚针轴承,连接管3无螺纹的一端从轴承2中间下部插入,与轴承2上部平齐,连接管3和轴承2之间紧配合连接;轴承2的上端从喷洒头体1的下部插入至喷洒头体的台阶5处,并紧配合连接。Referring to Fig. 1 and Fig. 2, a fire extinguishing sprinkler head with an involute arc nozzle includes a sprinkler head body 1, a
使用时,将连接管3有M32螺纹的一端和M32内螺纹的消防管道连接,在消防管道有一定压力的灭火剂时,该消防喷洒头就可自旋转着由近到远以渐开面的形式喷散灭火剂,在喷洒头的一周形成一个灭火剂圆饼,直接覆盖在油面上,灭火时间短,效率高。When in use, connect the end of the connecting
这种喷洒头,能适用于包括水、水成膜泡沫液在内的大多数液体灭火剂。可在短时间内将火扑灭,使用灭火剂少,灭火成本低,使用方便、灵活机动,省时高效,适用于扑灭飞机库等的油面火灾。This sprinkler head can be applied to most liquid fire extinguishing agents including water and aqueous film-forming foam liquid. It can extinguish the fire in a short time, uses less fire extinguishing agent, low fire extinguishing cost, easy to use, flexible and maneuverable, time-saving and efficient, and is suitable for extinguishing oil surface fires in hangars, etc.
实施例2:Example 2:
喷洒头体直径为90mm,厚度为10;喷洒头体上均布着二个喷口槽,渐开线形喷口槽起始端B端的喷口喷射角为70度,这里的入口的槽宽为0.6mm,出口的槽宽为0.5;渐开线形喷口槽终止端C端的喷射角为40度,这里喷口槽入口的槽宽为0.7mm,出口的槽宽为0.6mm;渐开线基圆半径r为10mm。The diameter of the sprinkler head body is 90mm, and the thickness is 10mm; there are two nozzle slots evenly distributed on the sprinkler head body. The slot width is 0.5; the jet angle at the terminal end C of the involute spout slot is 40 degrees, where the slot width at the entrance of the spout slot is 0.7 mm, and the slot width at the exit is 0.6 mm; the radius r of the involute base circle is 10 mm.
其它同实施例1。Others are with embodiment 1.
实施例3:Example 3:
喷洒头体直径为120mm,厚度为15mm;喷洒头体上均布着三个喷口槽,渐开线形喷口槽起始端B端的喷射角为80度,这里喷口槽入口的槽宽为3.0mm,出口的槽宽为2.8mm;渐开线形喷口槽终止端C端的喷射角为40度,这里喷口槽入口的槽宽为2.6mm,出口的槽宽为2.5mm;渐开线基圆半径r为16mm。The diameter of the sprinkler head body is 120mm, and the thickness is 15mm; there are three nozzle slots evenly distributed on the sprinkler head body, and the spray angle at the beginning end B of the involute nozzle slot is 80 degrees. The groove width of the involute spout groove is 2.8mm; the injection angle at the end C of the involute spout groove is 40 degrees, where the groove width of the nozzle groove inlet is 2.6mm, and the groove width of the outlet is 2.5mm; the radius r of the involute base circle is 16mm .
其它同实施例1。Others are with embodiment 1.
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