阅读说明：本技术 一种虚拟屏障式消防喷头 (Virtual barrier type fire-fighting nozzle ) 是由 武玉杰 于 2021-07-19 设计创作，主要内容包括：本发明公开了一种虚拟屏障式消防喷头,属于消防喷头领域,一种虚拟屏障式消防喷头,通过外散束的设置,在发生火情时,玻璃柱破裂后,外散束分散并随着溅水盘转动,使转动的外散束形成虚拟的挡水屏障,配合溅水盘的挡水作用,对喷出的水柱形成双层的挡水作用,相较于现有技术,显著提高水的辐射范围,进而有效抑制火势的蔓延速度,为消防员到达现场救火赢得了一定的时间,降低救火难度以及危险性,另外在外凸环的设置下,使玻璃柱下方的破裂口处处集中在外凸环处,进而有效避免玻璃柱的破裂口对外散束的转动造成影响,有效保证虚拟挡水屏障的形成。(The invention discloses a virtual barrier type fire-fighting spray head, which belongs to the field of fire-fighting spray heads, and is characterized in that through the arrangement of outer scattering beams, when a fire occurs, after a glass column is broken, the outer scattering beams are scattered and rotate along with a splash disc, so that the rotating outer scattering beams form a virtual water retaining barrier, and a double-layer water retaining effect is formed on a sprayed water column by matching with the water retaining effect of the splash disc.)

1. The utility model provides a virtual protective screen formula fire control shower nozzle, includes roof (1), roof (1) upper end is connected with screw thread pipe end (2), roof (1) below is equipped with splash box (5), splash box (5) top is equipped with the reference column, be connected with a pair of connecting rod (3) between roof (1) and the reference column, splash box (5) outer end is excavated scattered basin (6) that have a plurality of evenly distributed, its characterized in that: the upper end of the water splashing disc (5) is fixedly connected with a rotating shaft (9), the rotating shaft (9) is rotatably connected with the positioning column, a glass column (4) is arranged between the lower end of the top plate (1) and the positioning column, the glass column (4) comprises a pre-breaking end (41) with the upper end fixedly connected with the lower end of the top plate (1), a positioning end (42) fixedly connected with the upper end of the positioning column and an outer sealing end (43), the outer sealing end (43) is wrapped outside the positioning end (42), the lower end of the pre-breaking end (41) is located between the outer sealing end (43) and the positioning end (42), thermal expansion liquid is filled in the glass column (4), and an outer beam scattering body is fixedly connected with the upper end of the rotating shaft (9).

2. The virtual barrier fire sprinkler of claim 1, wherein: the pre-breaking end (41) is made of glass, and the positioning end (42) is made of metal.

3. A virtual barrier fire sprinkler according to claim 2, wherein: the inner wall of the outer sealing end (43) is wrapped with a pre-sealing layer (10), and the melting point of the pre-sealing layer (10) is lower than that of the outer sealing end (43).

4. A virtual barrier fire sprinkler according to claim 3, wherein: when the outer sealing end (43) is wrapped outside the surfaces of the outer sealing end (43) and the outer sealing end (43) during installation, the outer end of the upper side of the outer sealing end (43) is heated, the pre-sealing layer (10) is controlled to be molten, and therefore the pre-sealing layer slightly penetrates into a gap between the positioning end (42) and the pre-breaking end (41) to achieve sealing between the positioning end and the pre-breaking end.

5. The virtual barrier fire sprinkler of claim 1, wherein: the outer bundle of loosing includes a plurality of flexible rope (7) of being connected with pivot (9), flexible rope (7) tip fixedly connected with floating ball lamella (8), and is a plurality of floating ball lamella (8) are constituteed spherically.

6. The virtual barrier fire sprinkler of claim 5, wherein: the inside gas mixture that fills with helium and carbon dioxide gas of ball valve (8) floats, a plurality of ball valve (8) one end that is close to each other all fixed the inlaying have counter weight magnetic sheet (81) of mutual repulsion.

7. The virtual barrier fire sprinkler of claim 1, wherein: the length of the flexible rope (7) beyond the positioning end (42) is smaller than the distance between the glass column (4) and the connecting rod (3), and the longitudinal span of the floating ball valve (8) is smaller than the inner diameter of the positioning end (42).

8. The virtual barrier fire sprinkler of claim 1, wherein: an outer convex ring is arranged at the outer end of the pre-breaking end (41) which is coincided with the positioning end (42), a plurality of pre-breaking holes (11) which are uniformly distributed are formed in the positions, corresponding to the outer convex ring, of the pre-breaking end (41), and a shooting rod (12) is arranged in the pre-breaking holes (11) in an interference fit mode.

9. The virtual barrier fire sprinkler of claim 8, wherein: the shooting rod (12) is made of silicon rubber materials, and one end, facing the outward convex ring, of the shooting rod (12) is made of hard materials.

10. A virtual barrier fire sprinkler according to claim 9, wherein: the length of the shooting rod (12) is not less than half of the thickness of the positioning end (42), and the length of the positioning end (42) is less than the inner diameter of the section of the convex ring.

Technical Field

The invention relates to the field of fire-fighting nozzles, in particular to a virtual barrier type fire-fighting nozzle.

Background

The fire sprinkler is used for a fire sprinkler system, and when a fire disaster occurs, water is sprinkled out through the sprinkler head splashing disc to extinguish the fire, and is divided into a drooping type sprinkler head, an upright type sprinkler head, a common type sprinkler head, a side wall type sprinkler head and the like.

The drooping type nozzle is the most widely used one, drooping mounted on the water supply branch pipe, the shape of sprinkling is parabolic, and 80-100% of the total water amount is sprayed to the ground. The room with the suspended ceiling is protected, and the spray heads are arranged below the suspended ceiling and should adopt droop type spray heads or suspended ceiling type spray heads.

The existing fire-fighting nozzle expands the radiation range of a water column under the arrangement of a water retaining plate, but the spraying range is certain, the spraying water quantity is also certain, the spraying water quantity cannot be synchronously increased when the fire spreads, the fire is difficult to be inhibited in time, the speed of fire spreading is accelerated, and the fire fighter is high in danger and difficulty when arriving at the site to fight the fire.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a virtual barrier type fire-fighting nozzle, through the arrangement of outer scattering beams, when a fire occurs, after a glass column is broken, the outer scattering beams are scattered and rotate along with a water splash disc, so that the rotating outer scattering beams form a virtual water retaining barrier, and a double-layer water retaining effect is formed on a sprayed water column by matching with the water retaining effect of the water splash disc.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A virtual barrier type fire-fighting nozzle comprises a top plate, wherein the upper end of the top plate is connected with a threaded pipe end, a splash plate is arranged below the top plate, a positioning column is arranged above the splash plate, a pair of connecting rods are connected between the top plate and the positioning column, the outer end of the splash plate is provided with a plurality of uniformly distributed water dispersing grooves, the upper end of the splash plate is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected with the positioning column, a glass column is arranged between the lower end of the top plate and the positioning column, the glass column comprises a pre-breaking end, the upper end of which is fixedly connected with the lower end of the top plate, a positioning end and an outer sealing end, the outer sealing end is wrapped outside the positioning end, the lower end of the pre-breaking end is positioned between the outer sealing end and the positioning end, thermal expansion liquid is filled in the glass column, the upper end of the rotating shaft is fixedly connected with outer scattering beams through the arrangement of the outer scattering beams, when a fire happens, the glass column breaks, the outer beam scatters and rotates along with the splash plate, the outer beam scatters to form a virtual water retaining barrier, the water retaining effect of the splash plate is matched, a double-layer water retaining effect is formed on the sprayed water column, compared with the prior art, the radiation range of water is obviously improved, the spreading speed of fire is effectively inhibited, a certain time is won for firemen to reach the site to fight fire, the fire fighting difficulty and the fire fighting risk are reduced, in addition, under the arrangement of the outer convex ring, the fracture opening below the glass column is concentrated at the outer convex ring, the fracture opening of the glass column is effectively prevented from influencing the rotation of the outer beam scatters, and the formation of the virtual water retaining barrier is effectively guaranteed.

Furthermore, the pre-breaking end is made of glass, the positioning end is made of metal, so that the hardness of the position is too high, after the pre-breaking end is burst when fire occurs, the fire-fighting spraying system in the prior art controls water spraying and controls the electric rotating shaft to start at the same time to drive the water splashing disc to rotate, at the moment, the outward scattering beam is scattered in an outward rotating manner, the positioning end made of metal effectively ensures that the outward scattering beam is not easily cut when rotating along with the water splashing disc, and further effectively ensures that the barrier plane formed by the plurality of flexible ropes and the floating ball flaps at the end parts of the flexible ropes is relatively stable when rotating, so that the effect of blocking the water spraying column from being splashed is better.

Furthermore, the inner wall of the outer sealing end is wrapped with a pre-sealing layer, the melting point of the pre-sealing layer is lower than that of the outer sealing end, so that when the heating operation is carried out and the pre-sealing layer is melted, the outer sealing end is in a relatively stable state, and the sealing of a gap between the positioning end and the pre-breaking end is effectively realized.

Further, when the outer sealing end is installed and is wrapped outside the outer sealing end and the surface of the outer sealing end, the outer end of the upper side of the outer sealing end is heated, the pre-sealing layer is controlled to be molten, and therefore the pre-sealing layer slightly infiltrates into a gap between the positioning end and the pre-breaking end, and sealing between the positioning end and the pre-breaking end is achieved.

Furthermore, the outer bunch comprises a plurality of flexible ropes connected with the rotating shaft, the end parts of the flexible ropes are fixedly connected with floating ball flaps, the floating ball flaps form a sphere, mixed gas of helium and carbon dioxide is filled in the floating ball flaps, mutually-repulsive counterweight magnetic sheets are fixedly embedded at the ends, close to each other, of the floating ball flaps, so that the floating ball flaps can float upwards under the action of thermal expansion liquid in the pre-breaking ends and are located on the same interface, when the pre-breaking ends break, the floating ball flaps are effectively prevented from falling back into the positioning ends, and the formation of a virtual water blocking barrier is effectively guaranteed.

Furthermore, the length of the flexible rope exceeding the positioning end is smaller than the distance between the glass column and the connecting rod, so that the flexible rope is not easy to impact the connecting rod when rotating along with the splash water disc, the longitudinal span of the floating ball valve is smaller than the inner diameter of the positioning end, the diameter of a forehead ball formed by the plurality of floating ball valves is not larger than the inner diameter of the positioning end, and the flexible rope is in a free state in the pre-breaking end and the positioning end.

Further, the outer end of breaking end and the coincidence of location end in advance is provided with outer bulge loop, the position that the end that breaks in advance corresponds with outer bulge loop is opened and is dug the hole that breaks in advance that has a plurality of evenly distributed, the inside interference fit of hole that breaks in advance has the shooting pole, and when taking place the condition of a fire, thermal energy liquid becomes gas gradually, and the volume expands fast to the promotion is penetrated the pole and is removed towards outer bulge loop fast, and produces big impact force to outer bulge loop, and then makes the break point that breaks in advance the end below be located outer bulge loop department, and the outer pencil that scatters when making the rotation is difficult for and breaks the point contact.

Furthermore, the ejection rod is made of silicon rubber materials, and one end of the ejection rod facing the outer convex ring is made of hard materials, so that when the ejection rod is extruded out of the pre-breaking hole, the ejection rod is in hard contact with the outer convex ring, and further generates large impact force on the outer convex ring.

Furthermore, penetrate the pole length and be not less than the half of location end thickness, effectively guarantee to penetrate the area of contact in pole and the pre-broken hole, make frictional force great, make when high temperature and not reach the condition of a fire temperature, when thermal expansion liquid exists partial formation gas, be difficult for resulting in penetrating the pole and shift, and location end length is less than the internal diameter of evagination ring cross-section, make the location end break away from the pre-broken hole and enter into the evagination ring completely, and then make the impact force of production great.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through the setting of outer bunch, when taking place the condition of a fire, the glass post back that breaks, outer bunch dispersion is along with splash the rotation of water tray, make the outer bunch of pivoted form virtual manger plate protective screen, the manger plate effect of cooperation splash the water tray, form double-deck manger plate effect to spun water column, compare in prior art, show the radiation range that improves water, and then effectively restrain the speed of stretching of the intensity of a fire, win certain time for the fire fighter arrives on-the-spot fire fighting, reduce the fire fighting degree of difficulty and danger, in addition under the setting of outer bulge loop, make the fracture mouth department of glass post below concentrate on outer bulge loop department, and then effectively avoid the fracture mouth of glass post to cause the influence to the rotation of outer bunch, effectively guarantee the formation of virtual manger plate protective screen.

(2) The pre-breaking end is made of glass, the positioning end is made of metal, the hardness of the pre-breaking end is too high, after the pre-breaking end is cracked when fire occurs, a fire-fighting spraying system in the prior art controls water spraying and controls the electric rotating shaft to start at the same time, the water splashing disc is driven to rotate, the outer scattering beams are outwards rotated and scattered at the moment, the positioning end made of metal effectively guarantees that the outer scattering beams are not easily cut when rotating along with the water splashing disc, and therefore the floating ball flaps of the flexible ropes and the end portions of the flexible ropes are effectively guaranteed to rotate, the formed barrier plane is relatively stable, and the effect of blocking the water splashing of the water spraying column is better.

(3) The outer sealing end inner wall is wrapped with a pre-sealing layer, the melting point of the pre-sealing layer is lower than that of the outer sealing end, so that when the heating operation is carried out and the pre-sealing layer is melted, the outer sealing end is in a relatively stable state, and the sealing of a gap between the positioning end and the pre-breaking end is effectively realized.

(4) When the outer sealing end is installed, when the outer sealing end is wrapped outside the surfaces of the outer sealing end and the outer sealing end, the outer end of the upper side of the outer sealing end is heated, the pre-sealing layer is controlled to be molten, and therefore the pre-sealing layer slightly infiltrates into a gap between the positioning end and the pre-breaking end, and sealing between the positioning end and the pre-breaking end is achieved.

(5) The outer beam that looses includes a plurality of flexible ropes of being connected with the pivot, flexible rope tip fixedly connected with floater lamella, a plurality of floater lamellas constitute the sphere, floater lamella inside packing has the mist of helium and carbon dioxide gas, the equal fixed weight magnetic sheet of inlaying that has mutual repulsion of one end that a plurality of floater lamellas are close to each other, make a plurality of floater lamellas under the effect of the thermal energy liquid of broken end in advance, can the come-up, and be located same interface, when broken end breaks in advance, effectively guarantee in a plurality of floater lamellas are difficult for falling back the location end, effectively guarantee the formation of virtual manger plate protective screen.

(6) The length of the flexible rope exceeding the positioning end is smaller than the distance between the glass column and the connecting rod, so that the flexible rope is not easy to impact the connecting rod when rotating along with the splash disc, the longitudinal span of the floating ball valve is smaller than the inner diameter of the positioning end, the diameter of a forehead ball formed by the plurality of floating ball valves is not larger than the inner diameter of the positioning end, and the flexible rope is in a free state in the pre-breaking end and the positioning end.

(7) The outer end of breaking end and the coincidence of location end in advance is provided with outer bulge loop, the position that the end that breaks in advance and outer bulge loop correspond is opened and is dug the hole of breaking in advance that has a plurality of evenly distributed, the inside interference fit in hole that breaks in advance has the shooting pole, when taking place the condition of a fire, thermal energy liquid becomes gas gradually, the volume expands fast, thereby promote to shoot the pole and remove towards the interior of outer bulge loop fast, and produce big impact force to outer bulge loop, and then make the break point of breaking the end below in advance be located outer bulge loop department, the outer beam that scatters when making the rotation is difficult for and the point contact breaks.

(8) The shooting rod is made of silicon rubber materials, one end of the shooting rod facing the outer convex ring is made of hard materials, and when the shooting rod is extruded out of the pre-breaking hole, the shooting rod is in hard contact with the outer convex ring, so that large impact force is generated on the outer convex ring.

(9) Penetrate pole length and be not less than the half of location end thickness, effectively guarantee to penetrate the area of contact in pole and the pre-broken hole, make frictional force great, make when high temperature and not reach the condition of a fire temperature, when thermal energy liquid exists part formation gas, be difficult for resulting in penetrating the pole and shift, and location end length is less than the internal diameter of evagination ring cross-section, makes location end break away from the pre-broken hole and enter into the evagination ring completely, and then makes the impact force of production great.

Drawings

FIG. 1 is a schematic view of the structure of the present invention in forming a virtual water barrier;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic structural diagram of the front side of the present invention;

FIG. 4 is a schematic view of the structure of the glass tube of the present invention;

FIG. 5 is a schematic view of the structure at A in FIG. 4;

FIG. 6 is a schematic structural diagram of the front side of the outer beam splitter of the present invention;

FIG. 7 is a top view of the outer beam of the present invention;

FIG. 8 is a schematic structural view of a buoyant ball flap of the present invention;

FIG. 9 is a schematic view of the sealing structure of the contact between the pre-breaking end and the positioning end of the present invention;

fig. 10 is a schematic structural diagram of the prior art.

The reference numbers in the figures illustrate:

1 top plate, 2 threaded pipe ends, 3 connecting rods, 4 glass columns, 41 pre-breaking ends, 42 positioning ends, 43 outer sealing ends, 5 splash plates, 6 water dispersing grooves, 7 flexible ropes, 8 floating ball valves, 81 counterweight magnetic sheets, 9 rotating shafts, 10 pre-sealing layers, 11 pre-breaking holes and 12 shooting rods.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-2, a virtual barrier type fire sprinkler includes a top plate 1, a threaded pipe end 2 connected to an upper end of the top plate 1, a splash pan 5 disposed below the top plate 1, a positioning column disposed above the splash pan 5, a pair of connecting rods 3 connected between the top plate 1 and the positioning column, a plurality of uniformly distributed water scattering grooves 6 formed in an outer end of the splash pan 5, a rotating shaft 9 fixedly connected to an upper end of the splash pan 5, the rotating shaft 9 rotatably connected to the positioning column, and a glass column 4 disposed between a lower end of the top plate 1 and the positioning column.

Referring to fig. 4, the glass column 4 includes a pre-breaking end 41 having an upper end fixedly connected to the lower end of the top plate 1, a positioning end 42 fixedly connected to the upper end of the positioning post, and an outer sealing end 43, the outer sealing end 43 is wrapped outside the positioning end 42, the lower end of the pre-breaking end 41 is located between the outer sealing end 43 and the positioning end 42, the glass column 4 is filled with thermal expansion liquid, the pre-breaking end 41 is made of glass, the positioning end 42 is made of metal, so that the hardness of the pre-breaking end is too high, when the pre-breaking end 41 is burst, referring to fig. 1, in the fire sprinkler system in the prior art, the water spray is controlled and the electric rotating shaft is controlled to start, the water tray 5 is driven to rotate, at this time, the outer scattering beams are rotated and scattered outwards to form a virtual barrier, the positioning end 42 made of metal effectively ensures that the outer scattering beams are not easily broken when rotating along with the water tray 5, thereby effectively ensuring that the plurality of flexible ropes 7 and the flaps 8 at the ends thereof are rotated, the plane of the formed barrier is relatively stable, so that the splashing blocking effect on the water spraying column is better.

Referring to fig. 4-5, an outer collar is disposed at the outer end of the pre-breaking end 41 coinciding with the positioning end 42, a plurality of pre-breaking holes 11 are drilled at the positions of the pre-breaking end 41 corresponding to the outer collar, a shooting rod 12 is disposed in the pre-breaking holes 11 in an interference fit manner, when a fire occurs, the thermal expansion liquid gradually changes into gas, the volume rapidly expands, thereby pushing the shooting rod 12 to rapidly move toward the outer collar and generating a large impact force on the outer collar, so that a breaking point below the pre-breaking end 41 is located at the outer collar, the outer scattering beam which is scattered during rotation is not easily contacted with the point, the shooting rod 12 is made of silicon rubber material, one end of the shooting rod 12 facing the outer collar is made of hard material, and when the shooting rod is extruded from the pre-breaking hole 11, the shooting rod is in hard contact with the outer collar, thereby generating a large impact force on the outer collar, the length of the shooting rod 12 is not less than half of the thickness of the positioning end 42, effectively guarantee to penetrate the area of contact of pole 12 and pre-broken hole 11, make frictional force great, make when high temperature and not reach the condition of a fire temperature, when thermal expansion liquid exists the part and forms gas, be difficult for leading to penetrating pole 12 and shift, and location end 42 length is less than the internal diameter of evagination ring cross-section, makes location end 42 break away from pre-broken hole 11 and enter into the evagination ring completely, and then makes the impact force of production great.

Referring to fig. 9, the inner wall of the outer sealing end 43 is wrapped with the pre-sealing layer 10, and the melting point of the pre-sealing layer 10 is lower than that of the outer sealing end 43, so that when the pre-sealing layer 10 is melted during heating operation, the outer sealing end 43 is in a relatively stable state, and the gap between the positioning end 42 and the pre-breaking end 41 is effectively sealed;

when the outer sealing end 43 is wrapped outside the surfaces of the outer sealing end 43 and the outer sealing end 43 during installation, the outer end on the upper side of the outer sealing end 43 is heated, and the pre-sealing layer 10 is controlled to be molten and slightly penetrate into a gap between the positioning end 42 and the pre-breaking end 41, so that sealing between the positioning end 42 and the pre-breaking end 41 is realized.

Referring to fig. 6-7, the upper end of the rotating shaft 9 is fixedly connected with an outer scattering beam, the outer scattering beam comprises a plurality of flexible ropes 7 connected with the rotating shaft 9, the end parts of the flexible ropes 7 are fixedly connected with floating ball flaps 8, the plurality of floating ball flaps 8 form a sphere, referring to fig. 8, the interior of the floating ball flaps 8 is filled with mixed gas of helium and carbon dioxide gas, mutually repulsive counterweight magnetic sheets 81 are fixedly embedded at the mutually close ends of the plurality of floating ball flaps 8, so that the plurality of floating ball flaps 8 can float upwards and are positioned at the same interface under the action of thermal expansion liquid in the pre-breaking end 41, when the pre-breaking end 41 is broken, the plurality of floating ball flaps 8 are effectively ensured not to fall back into the positioning end 42, the formation of a virtual water barrier is effectively ensured, the length of the flexible ropes 7 exceeding the positioning end 42 is smaller than the distance between the glass column 4 and the connecting rod 3, so that the flexible ropes are not easy to impact the connecting rod 3 when rotating along with the rotation of the splash pan 5, the longitudinal span of the float ball flap 8 is smaller than the inner diameter of the positioning end 42, so that the diameter of the forehead ball formed by the plurality of float ball flaps 8 is not larger than the inner diameter of the positioning end 42, and the float ball flaps are in a free state in the pre-breaking end 41 and the positioning end 42.

Through the setting of outer beam, when taking place the condition of a fire, glass post 4 breaks the back, outer beam dispersion is along with splash the rotation of dish 5, make the outer beam dispersion of pivoted form virtual manger plate barrier, the manger plate effect of cooperation splash the dish 5, form double-deck manger plate effect to the spun water column, compare in prior art, show the radiation range that improves water, and then effectively restrain the speed that stretchs of the intensity of a fire, win certain time for the fire fighter arrives on-the-spot fire fighting, reduce the fire fighting degree of difficulty and danger, in addition under the setting of outer bulge loop, make glass post 4 below fracture mouth department concentrate on outer bulge loop department, and then effectively avoid glass post 4's fracture mouth to cause the influence to the rotation of beam dispersion, effectively guarantee the formation of virtual manger plate barrier.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.