CN101628162B

CN101628162B - Fire-fighting sprinkler head with circular-arc nozzle

Info

Publication number: CN101628162B
Application number: CN2009101444687A
Authority: CN
Inventors: 李权威; 秦俊; 唐海东; 倪佳迪
Original assignee: University of Science and Technology of China USTC
Current assignee: University of Science and Technology of China USTC
Priority date: 2009-08-11
Filing date: 2009-08-11
Publication date: 2012-07-25
Anticipated expiration: 2029-08-11
Also published as: CN101628162A

Abstract

The invention relates to a fire-fighting device, in particular to a fire-fighting sprinkler head with a circular-arc nozzle, comprising a sprinkler head body, a bearing and a connecting pipe. More than two axially-crossed circular-arc nozzle slots are evenly distributed on the circumference at the top of the cylindrical bottle cap-shaped sprinkler head body; an eject angle is formed between the axial lower end and the axial upper end of the circular-arc nozzle slot; the initial end at the axial upper end of the nozzle slot is a B end and the terminal end is a C end; the eject angle varies evenly from the initial end B to the terminal end C. When fire-extinguishing agent passes through the circular-arc nozzle slot, the sprinkler head obtains a tangential force to rotate under the action of pressure, so that the sprinkled fire-extinguishing agent forms a cake shape covered on the oil surface of flame around the sprinkler head. The sprinkler head is suitable for fire-extinguishing agents such as water and hydrogenic film foaming liquid, has the advantages of short extinguishing time, little fire-extinguishing agent, low extinguishing cost, convenient, flexible and efficient use, and is suitable for fighting fire at ground of hangar, decks, and the like.

Description

Fire-fighting sprinkler head with circular-arc nozzle

Technical field

The invention belongs to fire-fighting fire extinguishing equipment technical field, be specifically related to the sprinkler head of mechanical fluid spray extinguishing chemical extinguishing device.

Background technology

In order to prevent and put out the oil fire on ground, arrange fire-fighting extinguishing spray-head on the ground, extinguishing chemicals such as bottom-up sprinkling aqueous foam-forming solution or water.The sprinkler head of the mechanical fluid spray extinguishing chemical extinguishing device in the known technology adopts circular ring type spout groove; Become toroidal from the extinguishing chemicals such as MJPZ of annulus spout ejection; Lean on extinguishing chemical self diffusion to cover the pasta fire extinguishing, not only waste extinguishing chemical but also incur loss through delay attack time.

Summary of the invention

In order to solve extinguishing chemicals such as the MJPZ formation cake shape that sprinkler head ejects, shorten attack time, existing fire-fighting sprinkler head is improved, a kind of fire-fighting sprinkler head with circular-arc nozzle is provided.

Concrete architecture advances technical scheme is following:

Fire-fighting sprinkler head with circular-arc nozzle comprises sprinkler head body and tube connector, and the sprinkler head body is a cylinder bottle cap shape, and the pipe end of tube connector is connecting the sprinkler head body through bearing is installed.

Be laid with the circular-arc nozzle groove that axially connects more than two on the said cylinder bottle cap shape sprinkler head bodies top circumference; Form jet angle between the lower axial end of said circular-arc nozzle groove and the upper axial end; Its upper axial end face circular-arc nozzle groove initiating terminal is the B end, and clearing end is the C end; The size of said jet angle is held clearing end C end even variation from initiating terminal B; The jet angle of initiating terminal B end is 45 °; The downward end entrance groove width of initiating terminal B end spout fluted shaft is 2.0～2.3mm, and upper axial end outlet groove width is 1.5～2.0mm, and the jet angle of clearing end C end is 70-85 °; The groove width of the downward end entrance of clearing end C end spout fluted shaft is 1.5～2.0mm; The groove width of upper axial end outlet is 1.0～1.5mm, and the spout fluted shaft is connecting inverted cone on the sprinkler head body of inboard, lower end, and the point of inverted cone stretches in the tube connector.

Said sprinkler head body diameter is 40-60mm, and thickness is 8-10mm; The lower end of cylinder bottle cap shape sprinkler head body is a ring-shaped step shape, and the installation bearing of said connection tube connector is positioned at the ring-shaped step place of sprinkler head body.

The circular shape spout groove center of arc line equation of this sprinkler head is: x=rcost, and y=rsint, wherein: r is the radius of curvature of circular arc basic circle, general desirable 20-35mm; T is circular arc exhibition angle, and its unit is a radian, and the t value is 0～4 π/9,0～11 π/18 or 0～17 π/18 radian values; The t value is that 4 spout grooves, t value o'clock are arranged is that 3 spout grooves, t value o'clock are arranged is that 0～17 π/18 o'clock have 2 spout grooves in 0～11 π/18 in 0～4 π/9; The center of circle of the cross section of sprinkler head is the round dot of upper surface spout groove circular arc; According to the projectile equation: R=(v ²Sin2 θ)/and g, when vibrating deflection θ was 45 °, cast adopted the method for different vibrating deflections at the difference of spout groove farthest, can make the extinguishing chemical that ejects from circular-arc nozzle from the close-by examples to those far off, formed a sector from the near to the remote; When the circular arc spout groove, the effect of pressure makes sprinkler head obtain a tangential force and spinning makes the extinguishing chemical that sprays form a cake shape at extinguishing chemical, on the pasta of bedding flame around shower nozzle, helps fire extinguishing.

Sprinkler head of the present invention is applicable to liquid extinguishers such as comprising water and aqueous foam-forming solution to extinguish the blaze at short notice; The use extinguishing chemical is few, and the fire extinguishing cost is low, easy to use, flexible; The time-saving and efficiency is applicable to and puts out the pasta fire that hangar ground and ship deck etc. are located.

Description of drawings

Fig. 1 is a structural representation of the present invention,

Fig. 2 is the vertical view of Fig. 1.

The specific embodiment

Below in conjunction with accompanying drawing, the present invention is done explanation further through embodiment.

Embodiment 1:

Referring to Fig. 1 and Fig. 2, the fire-fighting sprinkler head with circular-arc nozzle comprises sprinkler head body 1, bearing 5, cone 3 and tube connector 6.Sprinkler head body 1 is that a diameter is 60mm; Thickness is the stainless steel cylinder of 10mm, is evenly distributed with the spout groove 2 of four circular shapes on its top circumference, and sprinkler head body 1 upper axial end circular arc spout center line equation is: x=rcost; Y=rsint; Wherein circular arc base radius r gets 27mm, and circular arc exhibition angle t gets 0～4 π/9, becomes certain jet angle between spout groove 2 lower axial end and the upper axial end; The size of this jet angle is held clearing end C end even variation from upper axial end spout groove initiating terminal B, and the width between spout groove 2 lower axial end and the upper axial end also is an even variation; The jet angle of the clearing end C end spout of spout groove 2 is 70 °, and the exit width of its upper axial end is 1.0mm, and the throat width of lower axial end is 1.5mm, and the extinguishing chemical that ejects is nearest, and the extinguishing chemical that ejects is less; The jet angle of the initiating terminal B of spout groove 2 end spout is 45 °, and its upper axial end exit width is 1.5mm, and the lower axial end throat width is 2.0mm, the extinguishing chemical that ejects farthest, the extinguishing chemical that ejects is more.The lower end of cylinder bottle cap shape sprinkler head body 1 is a ring-shaped step 4, is used to install bearing 5; Connect with bearing 5 between sprinkler head body 1 and the tube connector 6, the length of tube connector 6 is 60mm, and overall diameter is 35mm, and an end has the M35 external screw thread, is used for being connected with fire protection pipeline, and the other end is connected with bearing 5; Bearing 5 adopts the K811 series flat seal band inner ring water-sealed bearing of external diameter 52mm, internal diameter 35mm, and tube connector 6 threadless ends insert from bearing 5 middle lower portion, and are concordant with bearing 5 tops, and tight fit connects; The upper end of bearing 5 is inserted into the ring-shaped step 4 of sprinkler head body from the bottom of sprinkler head body 1, and tight fit connects.

When the spout groove 2, pressure acts on the spout groove of jet angle at extinguishing chemical, and sprinkler head obtains the tangential force of a rotation, makes the sprinkler head body 1 can spinning.

During use; Tube connector 6 is had an end of M35 screw thread and the fire protection pipeline of M35 internal thread are connected, when fire protection pipeline has the extinguishing chemical of certain pressure, but this fire-fighting sprinkler head just spinning from the near to the remote form spraying fire-extinguishing agent with sector; Around sprinkler head, form an extinguishing chemical cake; Directly overlay on the pasta, attack time is short, and efficient is high.

Embodiment 2:

Sprinkler head body diameter is 40mm, and thickness is 8mm; Be evenly distributed with the spout groove of three circular shapes on the sprinkler head body top circumference, the spout jet angle of spout groove clearing end C end is 80 °, and the groove width of the downward end entrance of spout fluted shaft is 1.5mm here, and the groove width of upper axial end outlet is 1.0mm; The jet angle of spout groove 2 initiating terminal B end is 45 °, and the groove width of the downward end entrance of spout fluted shaft is 2.0mm here, and the groove width of upper axial end outlet is 1.5mm; Circular arc base radius r gets 18mm, and circular arc exhibition angle t gets 0～11 π/18, and it is the K811 series flat seal band inner ring water-sealed bearing of 35mm, internal diameter 20mm that bearing 5 adopts external diameter, and the length of tube connector 6 is 100mm, and overall diameter is 20mm.

Other is with embodiment 1.

Embodiment 3:

Sprinkler head body diameter is 50mm, and thickness is 10mm; Be evenly distributed with the spout groove of two circular shapes on the sprinkler head body top circumference, the spout jet angle of spout groove clearing end C end is 85 °, and the groove width of the downward end entrance of spout fluted shaft is 2.0mm here, and the groove width of upper axial end outlet is 1.5mm; The jet angle of spout groove initiating terminal B end is 45 °, and the groove width of the downward end entrance of spout fluted shaft is 2.3mm here, and the groove width of upper axial end outlet is 2.0mm; Circular arc base radius r gets 22mm, and circular arc exhibition angle t gets 0～17 π/18, and it is the K811 series flat seal band inner ring water-sealed bearing of 42mm, internal diameter 25mm that bearing 5 adopts external diameter, and the length of tube connector 6 is 100mm, and external diameter is 25mm.

Other is with embodiment 1.

Claims

1. the fire-fighting sprinkler head that has circular-arc nozzle comprises sprinkler head body and tube connector, and the sprinkler head body is a cylinder bottle cap shape, and the pipe end of tube connector is connecting the sprinkler head body through bearing is installed, and it is characterized in that:

2. the fire-fighting sprinkler head with circular-arc nozzle according to claim 1 is characterized in that: said sprinkler head body diameter is 40-60mm, and thickness is 8-10mm; The lower end of cylinder bottle cap shape sprinkler head body is a ring-shaped step shape, and the installation bearing of said connection tube connector is positioned at the ring-shaped step place of sprinkler head body.