A coal fire prevention spraying device for an open pit mine
By designing pre-embedded water supply pipes and sprinkler pipes, the problem of spontaneous combustion of coal in open-pit mines was solved, achieving rapid fire extinguishing and safety assurance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENHUA GUONENG ENERGY GRP
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-24
AI Technical Summary
Open-pit coal is prone to spontaneous combustion in high temperatures, and existing fire prevention measures are insufficient, leading to resource waste and safety hazards.
Design an open-pit coal mine fire prevention sprinkler system that includes a water supply pipe, a sprinkler pipe, and a water distribution pipe. The sprinkler pipe is pre-buried underground, and the sprinkler pipe and the water distribution pipe are connected by a limiting structure, which can quickly and effectively spray fire extinguishing water when a fire occurs.
It achieved rapid and precise fire extinguishing, reduced property damage, and ensured the safety of on-site personnel.
Smart Images
Figure CN224540856U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coal mine fire prevention technology, specifically to an open-pit coal fire prevention spray device. Background Technology
[0002] Coal comes in two main forms: raw coal from unmined mines and raw coal extracted from mines. Regardless of the form, fire prevention and spontaneous combustion prevention measures are required during storage or extraction.
[0003] Open-pit coal mines store raw coal in open areas, which are prone to spontaneous combustion in hot weather. This not only wastes coal resources and causes property damage, but also threatens the lives of on-site workers. Therefore, it is necessary to improve fire prevention measures in open-pit coal mines to ensure the safety of life and property. Utility Model Content
[0004] This utility model provides an open-pit coal mine fire prevention sprinkler device that can quickly spray fire-fighting water in open-pit coal storage areas.
[0005] This utility model provides the following technical solution: an open-pit coal fire prevention spraying device, comprising: a water supply pipe, a spraying pipe, and a water distribution pipe;
[0006] The water supply pipe is used to be pre-buried below the coal storage area, and the water inlet end of the water supply pipe is connected to the water source through a water pump. The bottom of the spray pipe is fixedly connected to the water outlet end of the water supply pipe. The spray pipe extends vertically and the interior of the spray pipe is connected to the interior of the water supply pipe. The interior of the spray pipe is provided with a limiting cavity.
[0007] The water distribution pipe includes a sleeve, a telescopic part, a diffuser part, and a limiting part. The sleeve is fitted around the outer periphery of the spray pipe and is slidably connected to the spray pipe. One end of the telescopic part is installed on the top of the sleeve, and the other end of the telescopic part is installed on the diffuser part. The diffuser part is slidably connected to the top of the spray pipe. The top of the limiting part is fixedly connected to the diffuser part, and the bottom of the limiting part is slidably connected to the limiting cavity to prevent the limiting part from detaching from the spray pipe.
[0008] Preferably, the limiting part includes a limiting ring and a rod, the rod extends vertically and is inserted into the spray pipe, the top of the rod is fixedly connected to the diffuser, the limiting ring is fixedly sleeved on the outer periphery of the rod, and the outer periphery of the limiting ring is slidably connected to the limiting cavity.
[0009] Preferably, the limiting part further includes a plurality of connecting members, which are spaced apart on the outer periphery of the rod body, and the limiting ring is fixedly connected to the rod body through the connecting members.
[0010] Preferably, the spacing between adjacent connectors is equal.
[0011] Preferably, the telescopic part is a spring, and the spring is sleeved on the outer periphery of the rod.
[0012] Preferably, the inner diameter of the spring is larger than the inner diameter of the spray pipe.
[0013] Preferably, the diffuser is a diffuser cone, and the bottom diameter of the diffuser cone is larger than the outer diameter of the spray pipe.
[0014] Preferably, the diffusion cone has a hollow structure.
[0015] Preferably, there are multiple spray pipes, which are spaced apart above the water supply pipe.
[0016] Preferably, the inner diameter of the spray pipe is smaller than the inner diameter of the water supply pipe.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] By designing and using pre-embedded water supply pipes and vertically upward-pointing sprinkler and water distribution pipes located in the coal storage area, fire-fighting water can be sprayed accurately and quickly in the coal storage area when natural or other causes lead to coal ignition. Compared with existing mobile or fire truck-type sprinkler fire extinguishing equipment, this is more timely and helps reduce property damage. With the connection of the extension section, the sleeve and diffuser can automatically adapt to the impact and vibration of the water flow, dispersing the fire-fighting water and moving it directly towards the coal. At the same time, the limiting part effectively prevents the water distribution pipe from vibrating and detaching from the sprinkler pipe, ensuring that the open-pit coal fire prevention sprinkler system can successfully complete the fire extinguishing operation and guarantee the safety of life and property. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of the open-pit coal fire prevention spray device of this utility model;
[0020] Figure 2 This is a schematic diagram of the spray pipe structure of this utility model;
[0021] Figure 3 This is an exploded view of the structure of the open-pit coal mine fire prevention spray device of this utility model;
[0022] Figure 4 This is a schematic diagram of the limiting part structure of this utility model.
[0023] In the picture:
[0024] 1. Water supply pipe; 2. Sprinkler pipe; 21. Limiting cavity; 3. Diffuser pipe; 31. Sleeve; 32. Telescopic part; 33. Diffuser part; 34. Limiting part; 341. Limiting ring; 342. Rod body; 343. Connecting piece. Detailed Implementation
[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0026] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0027] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0028] Combination Figure 1-4As shown, an open-pit coal fire prevention sprinkler system includes: a water supply pipe 1, a sprinkler pipe 2, and a diffuser pipe 3; the water supply pipe 1 is pre-buried below the coal storage area, and the inlet end of the water supply pipe 1 is connected to a water source via a water pump; the bottom of the sprinkler pipe 2 is fixedly connected to the outlet end of the water supply pipe 1; the sprinkler pipe 2 extends vertically; the interior of the sprinkler pipe 2 communicates with the interior of the water supply pipe 1; and the interior of the sprinkler pipe 2 is provided with a limiting cavity 21; the diffuser pipe 3 includes a sleeve 31, a telescopic part 32, and a diffuser part 33. The sleeve 31 is fitted around the outer periphery of the spray pipe 2 and is slidably connected to the spray pipe 2. One end of the telescopic part 32 is installed on the top of the sleeve 31, and the other end of the telescopic part 32 is installed on the diffuser 33. The diffuser 33 is slidably connected to the top of the spray pipe 2. The top of the limiting part 34 is fixedly connected to the diffuser 33, and the bottom of the limiting part 34 is slidably connected to the limiting cavity 21 to prevent the limiting part 34 from detaching from the spray pipe 2.
[0029] In this embodiment, the water supply pipe 1 is first pre-buried below the coal storage area, and the spray pipe 2 is in a state perpendicular to the ground. After the water supply pipe 1 is connected to the water source through the water pump, the mined coal resources can be piled in this area. When a fire breaks out in the coal pile area, the water pump is adjusted to supply water from the water pipe 1 to the spray pipe 2. The water in the spray pipe 2 sprays upwards and, guided by the diffuser 33, flows around the coal pile 3 to extinguish the fire. The diffuser 33 moves upwards due to the impact of the water flow, which in turn causes the telescopic part 32 to deform upwards and even causes the sleeve 31 to slide upwards. This extends the length of the spray pipe 2 through the sleeve 31. The water in the spray pipe 2 sprays out from above the sleeve 31 and then impacts the diffuser 33, allowing the diffuser 33 to spray water further from a higher position. Since the speed and flow rate of the sprayed fire extinguishing water are different at every moment, the impact force applied to the diffuser 33 is also different. Under the action of the telescopic part 32, the diffuser 33 and the sleeve 31 can influence each other and automatically adapt to the vertical vibration, completing the fire extinguishing of the coal pile over a large area. At the same time, the limiting cavity 21's limiting effect on the limiting part 34 can effectively prevent the spray pipe 3 from detaching from the spray pipe 2 when the water flow impacts the diffuser 33 too much. The open-pit coal fire sprinkler system of this invention can extinguish fires in coal storage areas in a timely manner, effectively protecting the lives of on-site operators.
[0030] Preferably, the limiting part 34 includes a limiting ring 341 and a rod 342. The rod 342 extends vertically and is inserted into the spray pipe 2. The top of the rod 342 is fixedly connected to the diffuser 33. The limiting ring 341 is fixedly sleeved on the outer periphery of the rod 342, and the outer periphery of the limiting ring 341 is slidably connected to the limiting cavity 21.
[0031] In some embodiments, the inner wall diameter of the spray pipe 2 corresponding to the limiting cavity 21 is larger than the inner wall diameter of the spray pipe 2 in other parts, and the limiting cavity 21 is approximately located at the bottom of the spray pipe 2. The limiting ring 341 is limited within the limiting cavity 21. This arrangement of the limiting part 34 effectively ensures that the water distribution pipe 3 will not detach from the spray pipe 2.
[0032] Preferably, the limiting part 34 further includes a plurality of connecting members 343, which are spaced apart on the outer periphery of the rod body 342. The limiting ring 341 is fixedly connected to the rod body 342 through the connecting members 343. This ensures that the rod body 342 is connected to the limiting ring 341 while ensuring that water can be sprayed out from above the spray pipe 2 through the limiting ring 341. In some embodiments, the connecting member 343 is a pyramidal structure, with one end of the pyramidal structure fixedly connected to the inner wall of the limiting ring 341 and the other end fixedly connected to the outer periphery of the rod body 342.
[0033] Preferably, the spacing between adjacent connectors 343 is equal. This facilitates a more uniform impact force on the limiting ring 341 from the water flow, ensuring the sliding effect of the limiting ring 341 within the limiting cavity 21.
[0034] Preferably, the telescopic part 32 is a spring, and the spring is sleeved on the outer periphery of the rod body 342.
[0035] After the spring deforms within a certain range, it can return to its original position, which makes it easy for the spring to automatically adapt to the impact of water flow on the diffuser 33, which drives the sleeve 31 to vibrate up and down continuously. The length of the water distribution pipe 3 can be appropriately extended in real time according to the water flow rate and velocity, thereby avoiding excessive impact force that could separate the diffuser 33 from the water distribution pipe 3.
[0036] Preferably, the inner diameter of the spring is larger than the inner diameter of the spray pipe 2.
[0037] In some embodiments, the spring also acts as a filter structure. The open-pit coal fire prevention sprinkler device of this utility model is placed in the coal storage area. During the process of stacking or transferring coal, coal and other particles may be lifted up and fall into the sprinkler pipe 2. The spring is located on the outside of the sprinkler pipe 2 and can block larger particles to prevent them from entering the sprinkler pipe 2 and causing blockage that affects the delivery of fire extinguishing water.
[0038] Preferably, the diffuser 33 is a diffuser cone, and the bottom diameter of the diffuser cone is larger than the outer diameter of the spray pipe 2. The oscillating motion of the diffuser cone will cause irregular impacts with the fire extinguishing water. The fire extinguishing water jet sprayed from the top of the spray pipe 2 or the sleeve 31 is deflected and guided by the diffuser cone, and the water jet is dispersed in all directions to expand the fire extinguishing range. The fact that the bottom diameter of the diffuser cone is larger than the outer diameter of the spray pipe 2 can prevent the diffuser cone from being dragged into the spray pipe 2 under the dragging action of the telescopic part 32, thus affecting the water flow.
[0039] Preferably, the diffuser cone has a hollow structure. The inner wall of the diffuser cone can deflect the vertically upward water jet to an inclined downward direction, that is, towards the coal mine, minimizing the loss of fire-fighting water during the transfer and spraying process, thereby improving the utilization rate of fire-fighting water.
[0040] Preferably, there are multiple spray pipes 2, which are spaced apart above the water supply pipe 1. This ensures that all coal in the coal storage area is within the coverage area of the fire-fighting water from the open-pit coal fire prevention sprinkler system, which helps to prevent the spread of fire in a timely manner.
[0041] Preferably, the inner diameter of the spray pipe 2 is smaller than the inner diameter of the water supply pipe 1. This effectively ensures that the water supply pipe 1 delivers water to the spray pipe 2 and sprays it out from the top of the spray pipe 2.
[0042] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this application is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this application should also fall within the protection scope of the claims of this application. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this application.
Claims
1. An open-pit coal fire prevention sprinkler system, characterized in that, include: Water supply pipes, sprinkler pipes, and drainage pipes; The water supply pipe is used to be pre-buried below the coal storage area, and the water inlet end of the water supply pipe is connected to the water source through a water pump. The bottom of the spray pipe is fixedly connected to the water outlet end of the water supply pipe. The spray pipe extends vertically and the interior of the spray pipe is connected to the interior of the water supply pipe. The interior of the spray pipe is provided with a limiting cavity. The water distribution pipe includes a sleeve, a telescopic part, a diffuser part, and a limiting part. The sleeve is fitted around the outer periphery of the spray pipe and is slidably connected to the spray pipe. One end of the telescopic part is installed on the top of the sleeve, and the other end of the telescopic part is installed on the diffuser part. The diffuser part is slidably connected to the top of the spray pipe. The top of the limiting part is fixedly connected to the diffuser part, and the bottom of the limiting part is slidably connected to the limiting cavity to prevent the limiting part from detaching from the spray pipe.
2. The open-pit coal fire prevention sprinkler system as described in claim 1, characterized in that, The limiting part includes a limiting ring and a rod. The rod extends vertically and is inserted into the spray pipe. The top of the rod is fixedly connected to the diffuser. The limiting ring is fixedly sleeved on the outer periphery of the rod and the outer periphery of the limiting ring is slidably connected to the limiting cavity.
3. The open-pit coal fire prevention sprinkler system as described in claim 2, characterized in that, The limiting part also includes a plurality of connecting members, which are spaced apart on the outer periphery of the rod body, and the limiting ring is fixedly connected to the rod body through the connecting members.
4. The open-pit coal fire prevention sprinkler system as described in claim 3, characterized in that, The spacing between adjacent connectors is equal.
5. The open-pit coal fire prevention sprinkler system as described in claim 2, characterized in that, The telescopic part is a spring, and the spring is sleeved on the outer periphery of the rod.
6. The open-pit coal fire prevention sprinkler system as described in claim 5, characterized in that, The inner diameter of the spring is larger than the inner diameter of the spray pipe.
7. The open-pit coal fire prevention sprinkler system as described in claim 1, characterized in that, The diffuser is a diffuser cone, and the bottom diameter of the diffuser cone is larger than the outer diameter of the spray pipe.
8. The open-pit coal fire prevention sprinkler system as described in claim 7, characterized in that, The diffusion cone has a hollow structure.
9. The open-pit coal fire prevention sprinkler system as described in claim 1, characterized in that, The number of spray pipes is multiple, and the multiple spray pipes are arranged at intervals above the water supply pipe.
10. The open-pit coal fire prevention sprinkler system as described in claim 1, characterized in that, The inner diameter of the spray pipe is smaller than the inner diameter of the water supply pipe.