CN101357255B

CN101357255B - Involute arc spout fire-fighting extinguishing spray-head

Info

Publication number: CN101357255B
Application number: CN2008101965656A
Authority: CN
Inventors: 秦俊; 李权威; 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: 2008-09-11
Filing date: 2008-09-11
Publication date: 2011-09-14
Anticipated expiration: 2028-09-11
Also published as: CN101357255A

Abstract

The invention relates to an involute arc spout fire extinguishing sprinkler head of a fire extinguishing device with a mechanical liquid sprinkling fire extinguishing agent, which solves the problem that the existing circular spout groove sprinkler head costs fire extinguishing agent and delays fire extinguishing time. The sprinkler head comprises a sprinkler head body, a bearing and a connecting pipe; the spout groove is involute arc along the radial direction; the spraying angle of B end which is the starting end of the involute arc spout groove 4 is 70-85 degrees, the spraying angle of C end which is the ending end of the involute arc spout groove 4 is 40-45 degrees, and the base radius r of the involute is 10-15mm. The spout groove is in the involute shape, thus the sprayed fire extinguishing agent forms a round cake shape while being sprayed, which is good for fire extinguishing. The sprinkler head is applied to liquid extinguishing agents comprising water, aqueous film forming foam concentrate, and the like. The sprinkler head has the advantages of extinguishing fire in a short time with a few fire extinguishing agents, low fire extinguishing cost, high fire extinguishing efficiency, convenient use, flexible action, saving time and high efficiency, and is applied to oil fire of aerosheds, etc.

Description

Involute arc spout fire-fighting extinguishing spray-head

Technical field

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

Background technology

In order to prevent and put out ground or eminence leakage flow oil fire earthward, arrange fire-fighting extinguishing spray-head on the ground, bottom-up spraying fire-extinguishing agent, especially in places such as hangars, extinguishing chemicals such as this class shower nozzle spray water commonly used or aqueous foam-forming solution.Existing this class fire fighting extinguisher is the shower nozzle that adopts circular ring type spout groove, and the MJPZ extinguishing chemical that sprays from the annulus spout becomes toroidal, leans on foam solution self diffusion to cover pasta and puts out a fire, and not only wastes extinguishing chemical but also incur loss through delay attack time.

Summary of the invention

In order to solve the problem that existing annular spout groove sprinkler head had not only been consumed extinguishing chemical but also incured loss through delay attack time, the invention provides a kind of involute arc spout fire-fighting extinguishing spray-head.

The architecture advances technical scheme that realizes above-mentioned purpose is as follows:

A kind of involute arc spout fire-fighting extinguishing spray-head, comprise sprinkler head body, bearing and tube connector, the sprinkler head body is the cylinder that an axial end is provided with the indent step, and its indent step end is connecting tube connector by bearing, the other end uniform two to four spout grooves, it is characterized in that:

Described spout groove radially is an involute shape; The jet angle of involute shape spout groove 4 initiating terminal B end is the 70-85 degree, and the groove width of initiating terminal B end spout groove inlet is 0.6～3.0mm, and the groove width of outlet is 0.5～2.8mm; The jet angle of involute shape spout groove 4 clearing end C end is 40～45 degree, and the inlet groove width of clearing end C end spout groove is 0.6～2.6mm, and the outlet of groove is wide to be 0.5～2.5mm; Involute base radius r is 10～15mm.

Described sprinkler head body diameter is 40～120mm, and thickness is 10～16mm.

Described bearing is a single face band inner ring waterproof needle bearing.

The involute equation that the spout groove of this sprinkler head adopts is: x=r (cost+tsint), and y=r (sint-tcost), wherein r is a base radius, value is 10～16mm; T is the exhibition angle, and its unit is a radian, and the t value is 90 °～170 °, and the center of circle of the cross section of sprinkler head is the round dot of involute; According to projectile equation: R=(v*v*sin2 θ)/g, H=(v*v*sin2 θ)/(2g), at vibrating deflection θ is 45 when spending, the distance of impelling farthest, adopt the method for different vibrating deflections at the difference of spout groove, make from the extinguishing chemical ejaculation from the close-by examples to those far off of involute-type jet ejection and form an involute face, even 2～4 involute shape spout grooves that distribute on the sprinkler head are when extinguishing chemical passes through the spout groove, under the effect of extinguishing chemical pressure, sprinkler head obtains a tangential force, under the effect of this tangential force, the sprinkler head body can spinning, makes the extinguishing chemical that sprays form a patty, on the pasta of bedding flame around shower nozzle, help fire extinguishing.This sprinkler head is applicable to liquid extinguishers such as comprising water and aqueous foam-forming solution.Can extinguish the blaze at short notice, use extinguishing chemical few, the fire extinguishing cost is low, improves fire-fighting efficiency, and easy to use, flexible, and the time-saving and efficiency is applicable to the pasta fire that puts out hangar etc.

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 further described by embodiment.

Embodiment 1:

Referring to Fig. 1 and Fig. 2, a kind of involute arc spout fire-fighting extinguishing spray-head comprises sprinkler head body 1, bearing 2 and tube connector 3, sprinkler head body 1 is that a diameter is 100mm, thickness is the cylinder of 13mm, its axial end is provided with the cylinder of indent step 5, and its indent step end is connecting tube connector 3 by bearing 2; The other end uniform four spout grooves, the spout groove radially is an involute shape, the center of circle is the involute initial point; Involute equation is: x=r (cost+tsint), y=r (sint-tcost), wherein r is a base radius, value 14mm, t is the exhibition angle, its unit is a radian, the t value is 90 °～170 °, 90 ° is the initiating terminal B end of involute spout groove 4,170 ° is the clearing end C end of involute spout groove 4, spout groove 4 belows inlet exports into certain jet angle with the top, the spout even variation of the size of jet angle from sprinkler head body involute initiating terminal B end spout to involute clearing end C end, and the width of spout groove 4 belows inlet and top outlet is an even variation, the jet angle of the initiating terminal B end of involute spout groove 4 is 85 °, the extinguishing chemical that ejects is nearer, and the width of top ejiction opening is 1mm here, and the width that enters the mouth below is 1.4mm; The jet angle of the clearing end C of involute spout groove 4 end is 45 °, the extinguishing chemical that ejects farthest, the width that exports above of sprinkler head body is 2mm here, the width that enters the mouth below is 2.6mm, the extinguishing chemical that ejects is more; When the spout groove 4,, make sprinkler head obtain the tangential force of a rotation at extinguishing chemical, connect with bearing 2 between sprinkler head body 1 and the tube connector 3 that under the effect of this tangential force, the sprinkler head body can spinning because pressure acts on the spout groove of jet angle; The length of tube connector 3 is 200mm, and overall diameter is 32mm, and an end has the M32 external screw thread, is used for being connected with fire protection pipeline, and the other end is connected with bearing 2; Bearing 2 adopts external diameter 90mm, the NA4913 type single face band inner ring waterproof needle bearing of internal diameter 45mm, and tube connector 3 threadless ends insert from bearing 2 middle lower portion, and are concordant with bearing 2 tops, and tight fit connects between tube connector 3 and the bearing 2; The upper end of bearing 2 is inserted into the step 5 of sprinkler head body from the bottom of sprinkler head body 1, and tight fit connects.

During use, tube connector 3 there are an end of M32 screw thread and the fire protection pipeline of M32 internal thread are connected, when fire protection pipeline has the extinguishing chemical of certain pressure, but this fire-fighting sprinkler head from the near to the remote with regard to spinning and is sent extinguishing chemical forth with the form of involute surface, week at sprinkler head forms an extinguishing chemical cake, directly overlay on the pasta, attack time is short, the efficient height.

This sprinkler head can be applicable to the most liquid extinguishing chemical that comprises water, aqueous foam-forming solution.Can extinguish the blaze at short notice, use extinguishing chemical few, the fire extinguishing cost is low, easy to use, flexible, and the time-saving and efficiency is applicable to the pasta fire that puts out hangar etc.

Embodiment 2:

Sprinkler head body diameter is 90mm, and thickness is 10; Uniform two spout grooves on the sprinkler head body, the spout jet angle of involute shape spout groove initiating terminal B end is 70 degree, and the groove width of the inlet here is 0.6mm, and the groove width of outlet is 0.5; The jet angle of involute shape spout groove clearing end C end is 40 degree, and the groove width of spout groove inlet is 0.7mm here, and the groove width of outlet is 0.6mm; Involute base radius r is 10mm.

Other is with embodiment 1.

Embodiment 3:

Sprinkler head body diameter is 120mm, and thickness is 15mm; Uniform three spout grooves on the sprinkler head body, the jet angle of involute shape spout groove initiating terminal B end are 80 degree, and the groove width of spout groove inlet is 3.0mm here, and the groove width of outlet is 2.8mm; The jet angle of involute shape spout groove clearing end C end is 40 degree, and the groove width of spout groove inlet is 2.6mm here, and the groove width of outlet is 2.5mm; Involute base radius r is 16mm.

Other is with embodiment 1.

Claims

1. involute arc spout fire-fighting extinguishing spray-head, comprise sprinkler head body, bearing and tube connector, the sprinkler head body is the cylinder that an axial end is provided with the indent step, and its indent step end is connecting tube connector by bearing, the other end uniform two to four spout grooves, it is characterized in that:

Described spout groove radially is an involute shape; The center of circle is the involute initial point; Involute equation is: x=r (cost+tsint), and y=r (sint-tcost), wherein r is a base radius, and t is the exhibition angle, and its unit is a radian, and the t value is 90 °～170 °; The jet angle of involute shape spout groove 4 initiating terminal B end is the 70-85 degree, and the groove width of initiating terminal B end spout groove inlet is 0.6～3.0mm, and the groove width of outlet is 0.5～2.8mm; The jet angle of involute shape spout groove 4 clearing end C end is 40～45 degree, and the inlet groove width of clearing end C end spout groove is 0.6～2.6mm, and the outlet of spout groove is wide to be 0.5～2.5mm; Involute base radius r is 10～15mm.

2. involute arc fire-fighting extinguishing spray-head according to claim 1 is characterized in that: described sprinkler head body diameter is 40～120mm, and thickness is 10～16mm.

3. involute arc fire-fighting extinguishing spray-head according to claim 1 is characterized in that: described bearing is a single face band inner ring waterproof needle bearing.