CN216877681U - Fine water mist curtain spray head and water curtain system using same - Google Patents
Fine water mist curtain spray head and water curtain system using same Download PDFInfo
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- CN216877681U CN216877681U CN202220246340.2U CN202220246340U CN216877681U CN 216877681 U CN216877681 U CN 216877681U CN 202220246340 U CN202220246340 U CN 202220246340U CN 216877681 U CN216877681 U CN 216877681U
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Abstract
The utility model relates to a fine water mist curtain spray head and a water curtain system using the same, wherein the fine water mist curtain spray head comprises a spray head body, at least three spray head water outlets with axes on the same plane are uniformly distributed on the periphery of the spray head body at intervals along the circumferential direction, a shunt cavity channel connected with the corresponding spray head water outlet is arranged in the spray head body, one end of each shunt cavity channel is a gathering end communicated and gathered, an expanding cavity channel connected with the spray head water inlet and the gathering end of each shunt cavity channel is also arranged in the spray head body, the expanding cavity channel is an expanding structure with the inner diameter gradually increasing from the water flow direction, one or at least two reducing cavity channels sequentially arranged along the water flow direction are arranged in each shunt cavity channel, the inner diameter of each reducing cavity channel gradually decreases from the water flow direction, and the spray areas of two adjacent spray head water outlets are crossed in the circumferential direction. The utility model provides a thin water mist curtain spray head capable of preventing fire source smoke from diffusing along the inner wall of a ceiling and a water curtain system using the thin water mist curtain spray head.
Description
Technical Field
The utility model relates to the field of building fire-fighting facilities and public safety, in particular to a fine water curtain spray head and a water curtain system using the same.
Background
GB50898-2013 water mist fire extinguishing system technologyThe fine water mist is defined as follows in the technical code: the water is sprayed out of the spray head under the minimum design working pressure and forms a droplet diameter Dv on a plane 1m below the axis of the spray head0.50≤200μm（Dv0.50Representing that the percentage of the volume of the fog drops in a certain diameter in the total volume of the spraying liquid is 50 percent), Dv0.99Water mist drops less than or equal to 400 mu m.
The water mist fire extinguishing is generally characterized in that the mechanisms of vaporization cooling, oxygen isolation suffocation, heat radiation isolation and the like are combined to block smoke and extinguish fire. The fine water mist absorbs the temperature of a fire scene and is heated to be vaporized, the environment temperature is reduced, simultaneously, the water vapor content in the air of the fire scene is increased, the oxygen content is reduced, the thermal decomposition reaction of a fire source is inhibited to be stopped, and water mist drops sprayed out of the fine water mist can obstruct and scatter the thermal radiation transmitted by the fire source, so that the environment temperature of the fire scene is reduced.
GB50016-2014 "architectural design fire prevention Standard" states that a water curtain system is suitable to be arranged in large-scale theaters and stages, and the water curtain system is required to be arranged when fire partitions such as fire walls cannot be arranged. Due to the particularity of the underground space building structure, the fire-proof partition is difficult to arrange. The water curtain system can play a good smoke-blocking role as a fireproof partition, and effectively solves the problem that part of buildings cannot be provided with fireproof walls and fireproof roller shutters.
The water mist technology is applied to various building fields, is widely researched by related research scholars, and is provided by the scholars, the water mist has a certain inhibiting effect on explosive explosion, and has a good effect on inhibiting flame speed and pool fire. Zheng zhong university master thesis (201705) "study on fine water mist suppression of jet flame at ceiling of narrow and long space" improvement of spray head of fine water mist; the Chinese patent with the application number of 201520603609.8 discloses a thin water mist curtain spray head; the Chinese patent with the application number of 201520604816.5 discloses a fine water mist curtain system, which is researched by experiments and numerical simulation, and the result shows that the effect of the fine water mist curtain on inhibiting the jet flame of a ceiling is obvious, the fine water mist curtain can be evaporated to generate a large amount of water vapor and is attached to a ceiling of a protection section to dilute O-shaped substances of a downstream ceiling2And a combustible vapor concentration; the Chinese patent application No. 201710257582.5 discloses a middle-high pressure fine water mist spray with wind resistanceThe head, when using, it is littleer to compare traditional single spiral-flow type shower nozzle and receive the wind influence, no matter be under windy or windless operating mode, all can guarantee good fire extinguishing performance, more is fit for simultaneously popularizing and applying in the open air.
However, the fine water mist curtain spray head in the prior art has the following problems: the water spray orientation of thin water mist curtain shower nozzle is fixed, basically all spray down, spun thin water mist heat dissipation angle hardly exceeds 180, the active area is very limited, however underground space takes place the conflagration, the fire disaster flue gas rises to the ceiling rapidly, produce certain flue gas layer thickness, and to diffusing all around along the ceiling inner wall, unusual danger, in comparatively short inclosed building space, the building space structure is narrow and small, current thin water mist shower nozzle can't relate to the ceiling space, consequently, the effect of putting out a fire of hindering cigarette in ceiling space is relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a fine water mist curtain spray head capable of preventing fire source smoke from diffusing along the inner wall of a ceiling; the utility model also aims to provide a water curtain system using the fine water fog curtain spray head.
In order to solve the technical problems, the technical scheme of the fine water mist curtain spray head is as follows:
a fine water mist curtain nozzle comprises a nozzle body provided with a nozzle water inlet, wherein at least three nozzle water outlets are uniformly distributed at intervals in the periphery of the nozzle body along the circumferential direction, a shunting cavity channel connected with the corresponding nozzle water outlets is arranged in the nozzle body, one end of each shunting cavity channel is a gathering end communicated and gathered, an expanding cavity channel connected with the nozzle water inlet and the gathering end of each shunting cavity channel is further arranged in the nozzle body, the expanding cavity channel is an expanding structure with the inner diameter gradually increased from the water flow direction, one or at least two reducing cavity channels sequentially arranged along the water flow direction are arranged in each shunting cavity channel, the inner diameter of each reducing cavity channel is gradually reduced from the water flow direction, and the spraying areas of two adjacent nozzle water outlets are crossed in the circumferential direction.
Furthermore, the water inlet of the spray head is positioned at one side of the spray head body and is vertically arranged with the water outlet of each spray head.
Furthermore, the cross section of the nozzle body is of a polygonal structure with the number of sides corresponding to the number of the nozzle water outlets one to one, and the nozzle water outlets are respectively arranged on the corresponding side surfaces of the nozzle body.
Furthermore, the number of the water outlets of the spray head is 4-10, and the number of the reducing cavities in each flow dividing cavity is 1-4.
Furthermore, each shunt cavity channel is a linear cavity channel which is radially distributed by taking the axis of the expanding cavity channel as the center.
The technical scheme of the water curtain system in the utility model is as follows:
the water curtain system comprises a ceiling and a plurality of fine water mist curtain nozzles arranged on the lower side of the ceiling at intervals along the left-right direction, wherein each fine water mist curtain nozzle comprises a nozzle body provided with a nozzle water inlet, at least three nozzle water outlets are uniformly distributed on the periphery of the nozzle body at intervals along the circumferential direction, a shunting cavity channel connected with the corresponding nozzle water outlets is arranged in the nozzle body, one end of each shunting cavity channel is a gathering end communicated and gathered, an expanding cavity channel for connecting the nozzle water inlet and the gathering end of each shunting cavity channel is also arranged in the nozzle body, the expanding cavity channel is an expanding structure with the inner diameter gradually increasing from the water flow direction, one or at least two reducing cavity channels arranged along the water flow direction in sequence are arranged in each shunting cavity channel, and the inner diameter of each reducing cavity channel gradually decreases from the water flow direction, in the circumferential direction, the spraying areas of two adjacent spray head water outlets of one fine water mist curtain spray head are crossed.
The water inlet of the nozzle of one fine water mist curtain nozzle is positioned at one side of the nozzle body and is vertically arranged with the water outlets of the nozzles.
The cross section of the nozzle body is of a polygonal structure with the number of edges corresponding to the number of the nozzle water outlets one to one, and the nozzle water outlets are respectively arranged on the corresponding side surfaces of the nozzle body.
The number of the spray head water outlets of one fine water mist curtain spray head is 4-10, and the number of the reducing cavity channels in each flow distribution cavity channel is 1-4.
Each shunt cavity channel is a linear cavity channel which is radially distributed by taking the axis of the expanded cavity channel as the center.
The utility model has the beneficial effects that: in the utility model, water flow enters the spray head body through the water inlet of the spray head, then flows uniformly to each diversion cavity channel after being expanded through the expanding cavity channel, and in the diversion cavity channels, the water flow is pressurized through the reducing cavity channel and finally atomized through the spray head water outlets to be sprayed out to be crossed with the spraying areas of the two adjacent spray head water outlets, and the atomized areas sprayed out from the uniformly distributed spray head water outlets are distributed on a plane, thereby forming a 360-degree water curtain plane and effectively preventing fire source smoke from being diffused along the inner wall of a ceiling.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to like or corresponding parts and in which:
FIG. 1 is a schematic view of a water curtain system of the present invention showing the cooperation of a fine mist curtain nozzle with a ceiling;
FIG. 2 is a diagram showing the spraying effect of the fine mist curtain nozzle of FIG. 1;
FIG. 3 is a schematic structural view of the showerhead body of FIG. 1;
FIG. 4 is a schematic structural view of the nozzle of FIG. 1;
FIG. 5 is a schematic view of a fine mist curtain head according to the present invention;
FIG. 6 is a schematic view of the connection between the water pipe and the water mist curtain head according to the present invention;
FIG. 7 is a schematic view of the connection of the male fitting to the spray head body in the present invention;
description of reference numerals: 1. a nozzle body; 2. an external thread interface; 3. an internal lumen; 4. a nozzle housing; 5. shunting cavity channels; 6. a variable diameter cavity; 7. a nozzle body; 8. a water inlet of the nozzle; 11. a first variable diameter cavity; 12. a second variable diameter cavity; 13. a nozzle water inlet; 14. a nozzle flow guide hole; 15. a first nozzle drainage chute; 16. a nozzle cylindrical drainage groove; 17. a nozzle housing; 18. a nozzle water outlet; 19. a water injection pipeline; 20. a second nozzle drainage chute; 21. a ceiling; 22. a spray area; 23. a rectangular plane.
Detailed Description
In order to facilitate an understanding of the utility model, the utility model is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
The embodiments of the water curtain system of the present invention are shown in FIGS. 1 to 7:
the water curtain spray head comprises a ceiling and a plurality of water curtain spray heads which are arranged at intervals along the left-right direction and are arranged on the lower side of the ceiling 21 when in use, the structures of the water curtain spray heads are the same, and the structure of only one water curtain spray head is described in detail.
The fine water curtain shower nozzle includes shower nozzle body 1, and shower nozzle body 1 includes shower nozzle casing 4, and shower nozzle casing 4's appearance is the hexagon structure that the axis extends along left right direction, and shower nozzle casing 4's left end is provided with shower nozzle water inlet 8, and each side of shower nozzle casing is rectangle plane 23, and the equipartition has six shower nozzle delivery ports on each side of shower nozzle casing, and the axis of each shower nozzle delivery port is in the coplanar. The nozzle water inlet 8 is positioned at one side of the nozzle body 1 and is vertically arranged with each nozzle water outlet.
In this embodiment, six mounting holes are uniformly arranged on the head housing 4 along the circumferential direction at intervals, each mounting hole is provided with a nozzle body 7, and the nozzle water outlet holes 18 of the nozzle bodies 7 form a head water outlet.
The nozzle body comprises a nozzle shell 17, the nozzle body 1 is provided with a shunting cavity channel 5 connected with a corresponding nozzle water outlet, one end of each shunting cavity channel 5 is a convergence end communicated and converged, six shunting cavity channels 5 are provided because six nozzle water outlets are provided in the embodiment, and each shunting cavity channel is a linear cavity channel radially distributed by taking the axis of the expanded diameter cavity channel as the center.
The spray head body is also internally provided with an internal cavity 3 which is connected with the water inlet 8 of the spray head and the convergence end of each shunt cavity 5, the internal cavity is an expanding cavity with gradually increased inner diameter from the water flow direction, and the cavity wall of the expanding cavity is of a smooth arc structure. From the water inlet of the nozzle, the inner diameter of the expanding cavity channel is gradually expanded to the shunting cavity channel. The water inlet 8 of the nozzle is provided with an external thread interface 2 which is connected with a water injection pipeline 19.
Each diversion cavity channel 5 is provided with two reducing cavity channels which are sequentially arranged along the water flow direction, the two reducing cavity channels are respectively called as a first reducing cavity channel 11 and a second reducing cavity channel 12, and the reducing cavity channels are of a conical structure with gradually reduced inner diameter from the water flow direction. In this embodiment, the inner cavity of the nozzle body is a stepped shaft structure having a large diameter section and a small diameter section, a first nozzle drainage chute 15 is arranged in the large diameter section of the nozzle body, the first nozzle drainage chute has a tapered inner cavity with a diameter gradually decreasing from the water flow direction, and the tapered inner cavity of the first nozzle drainage chute forms a first variable diameter cavity channel 11.
A nozzle cylindrical drainage groove 16 is arranged in the small-diameter section of the nozzle body, a second nozzle drainage chute 20 is arranged at the tail end of the inner cavity of the nozzle cylindrical drainage groove 16, the second nozzle drainage chute 20 is provided with a conical inner cavity with the diameter gradually reduced from the water flow direction, and the conical inner cavity of the second nozzle drainage chute 20 forms a second reducing cavity channel 12. The end of the inner cavity of the nozzle cylindrical drainage groove close to the first nozzle drainage groove forms a nozzle diversion hole 14.
One end of the nozzle body close to the expanding cavity channel is a nozzle water inlet 13, and one end of the nozzle body far away from the expanding cavity channel is a nozzle water outlet 18.
In the embodiment, the axes of the nozzle bodies intersect at the midpoint of the intersection position of the flow dividing channels; the cone angle of the fine water mist sprayed from the water outlet holes of the nozzles is 30-90 degrees, and the spraying areas of the water outlets of two adjacent nozzles are crossed in the circumferential direction. Two adjacent fine water curtain spray heads spray the areas 22 to intersect to form a complete water curtain. The shower nozzle casing adopts stainless steel material to make, and the perpendicular line of each side of shower nozzle casing is the perpendicular line of nozzle apopore place side and nozzle apopore axis unanimous.
In other embodiments of the present invention, the perpendicular line of the side surface where the nozzle water outlet hole is located and the nozzle water outlet hole may be inclined at an angle ranging from 5 ° to 30 °. The number of the water outlets of the nozzles of each water mist curtain nozzle can be 4, 10 or other numbers between 4 and 10; the number of the variable diameter cavities in each shunt cavity can also be 1, 4 or other numbers.
When the water spraying device is used, water flow with pressure is sent by a water injection pipeline, the water has certain kinetic energy under the action of the pressure, enters the inner cavity channel of the nozzle body through the water inlet of the nozzle, namely the diameter-expanding cavity channel, is shunted to six shunt cavity channels with adjacent included angles of 60 degrees after flow expansion, enters the nozzle water inlet in the nozzle body, is subjected to diameter reduction through the two diameter-reducing cavity channels, and is respectively sprayed out from nozzle water outlets with corresponding diameters smaller than 2mm, the sprayed fluid is in an atomizing form under the action of the pressure, and the water spray sprayed out from the nozzle water outlets form a 360-degree water curtain plane because the nozzles are uniformly distributed on the same plane, and the water curtain screen is perpendicular to a ceiling.
The utility model can be used together with a water spraying system or independently and is applied to a high-pressure fine water mist curtain system. The smoke-blocking and heat-insulating fire-extinguishing device can be applied to underground space buildings or underground pipe galleries, can be arranged in the middle of a long and narrow space, can replace a fireproof rolling curtain to separate a smoke-blocking subarea, can be used as a fireproof partition for a smoke-blocking vertical wall, and can also be applied to other overlong or overlong buildings which are difficult to block smoke.
Compared with the prior art, the utility model has the advantages that:
according to the fine water mist curtain nozzle, the inner cavity channel is designed to expand, divide and reduce, the pressure of sprayed water mist is increased while the divided flow is ensured, the sprayed water mist has high momentum, the nozzle is designed to guide the chute and double reducing, the sprayed water flow enters air to be rapidly dispersed and atomized, and the sprayed fluid is in a fine water mist form. 6 nozzle bodies, reducing chamber way, its axis of nozzle hole all are in a plane, and the axis compares in a bit, and the blowout water smoke shape is 360 water curtain planes, and water curtain plane perpendicular to ceiling guarantees that inside chamber way rivers are even, avoids the condition that the thin water smoke of blowout distributes unevenly, reduces the loss of water consumption.
The conventional fine water mist curtain nozzle is mainly used for eliminating fire in the lower space of a building, the fine water mist has limited action area, cannot relate to the space between the nozzle and a ceiling, has an unobvious effect of blocking the smoke spread at the top, and has the limitation of height and space. This utility model discloses an on spout thin water fog curtain shower nozzle of type, its design theory has fully considered the space between shower nozzle and the building ceiling, not only can eliminate building lower part conflagration and prevent the flue gas to stretch, has also solved the unable difficult problem that relates to ceiling space of thin water smoke that the shower nozzle produced. The design accessible changes shower nozzle pressure and flow and adjusts the shower nozzle apart from the co-altitude and the shower nozzle interval of ceiling, and it is brief to go up the thin water mist curtain shower nozzle structure of spout type, and the installation design is more nimble, also can be applied to other overlength or the wide building that hinders the cigarette difficulty, effectively prevents that building top flue gas from stretching, and it is higher to hinder cigarette fire extinguishing efficiency, has practical meaning.
The embodiments of the fine water mist curtain spray head are shown in figures 1-7: the detailed structure of the water curtain spray head is the same as that of the water curtain system embodiments, and the detailed description is omitted here.
In the above description of the present specification, the terms "fixed," "mounted," "connected," or "connected," and the like, are to be construed broadly unless otherwise expressly specified or limited. For example, with the term "coupled", it can be fixed, removable, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship. Therefore, unless the specification explicitly defines otherwise, those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.
From the above description of the present specification, those skilled in the art will also understand the terms used below, terms indicating orientation or positional relationship such as "upper", "lower", "front", "rear", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "central", "longitudinal", "transverse", "clockwise" or "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings of the present specification, it is for the purpose of facilitating the explanation of the utility model and simplifying the description, and it is not intended to state or imply that the devices or elements involved must be in the particular orientation described, constructed and operated, therefore, the above terms of orientation or positional relationship should not be construed or interpreted as limiting the present invention.
In addition, the terms "first" or "second", etc. used in this specification are used to refer to numbers or ordinal terms for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present specification, "a plurality" means at least two, for example, two, three or more, and the like, unless specifically defined otherwise.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a fine spray curtain shower nozzle, is including the shower nozzle body that is provided with the shower nozzle water inlet, its characterized in that: the spray head comprises a spray head body, wherein at least three spray head water outlets with axes on the same plane are uniformly distributed at intervals along the circumferential direction of the spray head body, a shunting cavity channel connected with the corresponding spray head water outlet is arranged in the spray head body, one end of each shunting cavity channel is a gathering end communicated and gathered, an expanding cavity channel connected with the spray head water inlet and the gathering end of each shunting cavity channel is also arranged in the spray head body, the expanding cavity channel is of an expanding structure with the inner diameter gradually increased from the water flow direction, one or at least two reducing cavity channels sequentially arranged along the water flow direction are arranged in each shunting cavity channel, the inner diameter of each reducing cavity channel is gradually reduced from the water flow direction, and the spray areas of two adjacent spray head water outlets are crossed in the circumferential direction.
2. The fine mist curtain sprinkler head of claim 1, wherein: the water inlet of the spray head is positioned at one side of the spray head body and is vertical to the water outlets of the spray heads.
3. The fine mist curtain sprinkler head of claim 1, wherein: the cross section of the nozzle body is of a polygonal structure with the number of edges corresponding to the number of the nozzle water outlets one to one, and the nozzle water outlets are respectively arranged on the corresponding side surfaces of the nozzle body.
4. The fine mist curtain sprinkler head of claim 1, wherein: the number of the spray nozzle water outlets is 4-10, and the number of the reducing cavities in each shunting cavity is 1-4.
5. The fine water mist curtain spray head according to any one of claims 1 to 4, characterized in that: each shunt cavity channel is a linear cavity channel which is radially distributed by taking the axis of the expanded cavity channel as the center.
6. Water curtain system, including the ceiling with set up in a plurality of thin water fog curtain shower nozzles of left and right direction interval arrangement of edge of ceiling downside, thin water fog curtain shower nozzle is including the shower nozzle body that is provided with the shower nozzle water inlet, its characterized in that: the method is characterized in that: the spray head comprises a spray head body, wherein at least three spray head water outlets with axes on the same plane are uniformly distributed at intervals along the circumferential direction of the spray head body, a shunting cavity channel connected with the corresponding spray head water outlet is arranged in the spray head body, one end of each shunting cavity channel is a gathering end communicated and gathered, an expanding cavity channel connected with the spray head water inlet and the gathering end of each shunting cavity channel is also arranged in the spray head body, the expanding cavity channel is of an expanding structure with the inner diameter gradually increased from the water flow direction, one or at least two reducing cavity channels sequentially arranged along the water flow direction are arranged in each shunting cavity channel, the inner diameter of each reducing cavity channel is gradually reduced from the water flow direction, and the spray areas of two adjacent spray head water outlets of one fine water mist curtain spray head are crossed in the circumferential direction.
7. The water curtain system of claim 6, wherein: the water inlet of the nozzle of one fine water mist curtain nozzle is positioned at one side of the nozzle body and is vertically arranged with the water outlets of the nozzles.
8. The water curtain system of claim 6, wherein: the cross section of the sprayer body is of a polygonal structure with the number of edges corresponding to the number of the sprayer water outlets one to one, and the sprayer water outlets are respectively arranged on the corresponding side surfaces of the sprayer body.
9. The water curtain system of claim 6, wherein: the number of the spray head water outlets of one fine water mist curtain spray head is 4-10, and the number of the reducing cavity channels in each flow dividing cavity channel is 1-4.
10. The water curtain system as claimed in any one of claims 6 to 9, wherein: each shunt cavity channel is a linear cavity channel which is radially distributed by taking the axis of the expanded cavity channel as the center.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114534151A (en) * | 2022-01-30 | 2022-05-27 | 中原工学院 | Water curtain system of thin water fog curtain shower nozzle and use this thin water fog curtain shower nozzle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114534151A (en) * | 2022-01-30 | 2022-05-27 | 中原工学院 | Water curtain system of thin water fog curtain shower nozzle and use this thin water fog curtain shower nozzle |
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