A safe coal storage facility

Abstract

This invention discloses a safe coal storage facility, belonging to the field of coal pile storage technology. It includes a building and a cooling device. The cooling device comprises cooling pipes installed in the floor of the building, a spray assembly installed on the crossbeams of the building, and a flow conveying assembly installed on the side wall of the building and connected to the cooling pipes. The flow conveying assembly transports low-temperature fluid to the area below the coal pile through the cooling pipes for cooling. A horizontal groove is provided on the floor of the building to support and cover the cooling pipes, and a support component is provided within the groove to support the cooling pipes. The flow conveying assembly includes a first flow pipe, a second flow pipe, and a distributor. Both the first and second flow pipes are connected to the cooling pipes through the distributor. The facility is used to store coal piles. Low-temperature gas is transported from the bottom to reduce the internal temperature of the coal pile. Further atomized water mist is mixed in, making the inside of the coal pile moist. A spraying device is provided at the top for water spraying to cool and moisturize the coal pile, preventing spontaneous combustion.

Description

Technical Field

[0001] This invention belongs to the field of coal storage technology, and more specifically, relates to a safe coal storage plant. Background Technology

[0002] Coal consumption is generally large. When manufacturers purchase coal, they usually buy large quantities and store them in empty factory buildings. When the coal is stored, the coal interacts with oxygen in the air and releases heat. If the heat generated by the coal-oxygen interaction cannot be dissipated in time, the heat accumulation will cause the coal pile temperature to rise. When the coal temperature rises to the auto-ignition point, the coal pile will spontaneously combust, and coal gas will also be produced inside the coal pile.

[0003] Currently, the common method to prevent spontaneous combustion of coal piles is to drill into the coal pile for treatment. For example, CN202123074528.8 describes a cooling and humidifying rod that, after being inserted into the coal pile, blows cold air into the coal pile to cool it down and sprays moisture to increase humidity. It is characterized by including a hollow drilling rod, a drilling component inside the hollow drilling rod, a cooling component outside the hollow drilling rod to cool the coal pile, and a humidifying component outside the hollow drilling rod to humidify the coal pile. This method can be inserted into the coal pile to blow cold air into it for cooling and can increase the humidity inside the coal pile through spraying. However, this solution is not ideal. This method is difficult to drill into large coal piles, and due to the characteristics of coal, the friction during drilling generates a lot of heat, which can easily ignite the coal pile. Furthermore, drilling consumes a large amount of energy. In addition, coal piles are consumables; they are constantly changing, with both consumption and replenishment. This solution requires regular manual operation, which is time-consuming and labor-intensive.

[0004] In conclusion, a spontaneous protective measure is needed to prevent spontaneous combustion of coal piles. Summary of the Invention

[0005] 1. The technical problem that the invention aims to solve

[0006] The purpose of this invention is to solve the current problem of coal piles being prone to spontaneous combustion. Measures to prevent spontaneous combustion of coal piles should be automated and preferably require no additional manpower or material resources.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0009] The present invention provides a safe coal storage building, comprising a building for stacking coal piles and a cooling device installed inside the building for cooling the coal piles. The cooling device includes a cooling pipe installed in the floor of the building, a spray assembly installed on the crossbeams of the building, and a flow conveying assembly installed on the side wall of the building and connected to the cooling pipe. The flow conveying assembly delivers low-temperature fluid to the area below the coal pile through the cooling pipe for cooling.

[0010] The floor of the building is provided with horizontal grooves for supporting and covering the cooling pipes, and the grooves are provided with support components for supporting the cooling pipes.

[0011] The flow transmission assembly includes a first flow transmission pipe, a second flow transmission pipe, and a flow divider. Both the first and second flow transmission pipes are connected to the cooling pipe through the flow divider.

[0012] Preferably, the support member has an arc-shaped structure, and the cooling pipe is coaxially arranged inside it. Several support plates are provided on the inner side of the support member. These support plates are used to support the cooling pipe and guide the airflow around the cooling pipe.

[0013] Preferably, the cooling pipe includes an outer pipe and an inner pipe, with the outer pipe fitted over the inner pipe. The inner pipe is a U-shaped pipe, and the outer pipe and the inner pipe are respectively connected to the first conveying pipe and the second conveying pipe.

[0014] Preferably, gas is transported in the first conveying pipe, liquid is transported in the second conveying pipe, and the outer pipe is provided with a number of small holes along the axial direction of the outer pipe, which are used to transport the gas in the outer pipe out.

[0015] Preferably, the total area of ​​the several small holes is less than the cross-sectional area of ​​the first conveying pipe, the total area of ​​the small holes is S1, the cross-sectional area of ​​the first conveying pipe is S2, and S1 / S2 = 0.8 to 0.9.

[0016] Preferably, a number of small holes along the axial direction of the outer tube are symmetrically arranged on both sides of the inner tube, with the central axes of the small holes on both sides intersecting and the included angle being 30°.

[0017] Preferably, the spray assembly includes a spray pipe group and nozzles installed on the spray pipe group. The spray pipe group is composed of multiple concentric ring pipes of different diameters, and the nozzles are distributed on different ring pipes. The nozzles are atomizing nozzles.

[0018] Preferably, the sprinkler pipe assembly is equipped with a lifting device. The sprinkler pipe assembly is connected to the water pipe via a spring hose. The lifting device includes a mounting plate and a crane. The sprinkler pipe assembly is mounted on the mounting plate, and the crane is mounted on the crossbeam of the building. The crane is connected to the mounting plate, and an infrared thermostat is installed on the mounting plate.

[0019] Preferably, the mounting plate is provided with several ring clips, and the spray pipe assembly is connected to the mounting plate through the ring clips. The spray pipe assembly is connected to the spring hose through a horizontal pipe, which runs through the spray pipe assembly.

[0020] Preferably, the distributor is equipped with an atomizer, which is installed on the inner tube of the cooling pipe, and the nozzle of the atomizer is located at the connection point where the first delivery pipe enters the distributor.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0023] (1) A safe coal storage plant of the present invention is used to store coal piles. The temperature inside the coal pile is reduced by supplying low-temperature gas from the bottom. Further atomized water mist is mixed into it to make the inside of the coal pile moist. A spraying device is provided on the top to spray water to cool and moisturize the coal pile and prevent spontaneous combustion of the coal pile. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of a safe coal storage plant according to the present invention;

[0025] Figure 2 This is an enlarged view of a cooling pipe system for a safe coal storage plant according to the present invention;

[0026] Figure 3 This is a schematic diagram of the cooling pipeline structure of a safe coal storage plant according to the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of a small hole in a safe coal storage building according to the present invention;

[0028] Figure 5 This is a schematic diagram illustrating a safe airflow cooling system for a coal storage facility according to the present invention.

[0029] Figure 6 This is a schematic diagram of the structure of a spray pipe assembly in a safe coal storage plant according to the present invention;

[0030] Figure 7 This is a schematic diagram showing the location of the atomizer in a safe coal storage plant according to the present invention.

[0031] Explanation of the labels in the diagram:

[0032] 100. Body; 110. Horizontal groove; 120. Supporting component; 121. Supporting piece;

[0033] 200. Cooling device; 210. Cooling pipe; 211. Outer pipe; 212. Inner pipe; 213. Orifice; 220. Spray assembly; 221. Spray pipe assembly; 222. Spray head; 223. Lifting device; 224. Spring hose; 225. Mounting plate; 226. Horizontal pipe; 230. Flow conveying assembly; 231. First flow conveying pipe; 232. Second flow conveying pipe; 233. Flow divider; 234. Atomizer;

[0034] 300. Coal pile. Detailed Implementation

[0035] To facilitate understanding of the present invention, a more complete description of the invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be more thorough and complete.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element; the terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0037] Unless otherwise defined, 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 pertains; the terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] Example 1

[0039] See attached document Figures 1-7 As shown, a safe coal storage plant in this embodiment includes a building 100 for stacking coal piles 300 and a cooling device 200 installed inside the building 100 to cool the coal piles 300. The cooling device 200 includes a cooling pipe 210 installed in the floor of the building 100, a spray assembly 220 installed on the crossbeam of the building 100, and a flow conveying assembly 230 installed on the side wall of the building 100 and connected to the cooling pipe 210. The flow conveying assembly 230 transports low-temperature fluid to the area below the coal piles 300 through the cooling pipe 210 for cooling.

[0040] The floor of the room 100 is provided with a horizontal groove 110 for supporting and covering the cooling pipe 210, and a support member 120 for supporting the cooling pipe 210 is provided in the horizontal groove 110.

[0041] The flow transmission assembly 230 includes a first flow transmission pipe 231, a second flow transmission pipe 232, and a flow divider 233. Both the first flow transmission pipe 231 and the second flow transmission pipe 232 are connected to the cooling pipe 210 through the flow divider 233.

[0042] In the above design, the coal pile 300 is piled above the cooling pipe 210. After a long period of time, coal gas will be generated inside the coal pile 300 and the temperature will rise. The cooling pipe 210 can reduce the internal temperature of the coal pile 300 and prevent the coal pile 300 from spontaneously combusting. The spray assembly 220 installed on the crossbeam of the building 100 can spray water periodically to keep the surface of the coal pile 300 moist, further reduce the temperature, and inhibit spontaneous combustion.

[0043] In this embodiment, the support member 120 has an arc-shaped structure, and the cooling pipe 210 is coaxially arranged inside it. Several support plates 121 are provided on the inner side of the support member 120. The support plates 121 are used to support the cooling pipe 210 and guide the airflow around the cooling pipe 210.

[0044] The cooling pipe 210 in this embodiment includes an outer pipe 211 and an inner pipe 212. The outer pipe 211 is fitted onto the inner pipe 212. The inner pipe 212 is a U-shaped pipe. The outer pipe 211 and the inner pipe 212 are respectively connected to the first conveying pipe 231 and the second conveying pipe 232.

[0045] In this embodiment, gas is transported in the first conveying pipe 231, liquid is transported in the second conveying pipe 232, and a plurality of small holes 213 are provided on the outer pipe 211 along the axial direction of the outer pipe 211. The small holes 213 are used to transport the gas in the outer pipe 211 out.

[0046] In the above design, during operation, gas is transported in the first conveying pipe 231 and enters the outer pipe 211 of the cooling pipe 210. Low-temperature liquid, such as cold water, is transported in the second conveying pipe 232. At this time, the gas will come into contact with the inner pipe 212 and be cooled. Then, the gas that has accumulated overflows from the small hole 213, passes through the support plate 121, disperses to both sides, and finally rises into the coal pile 300 to cool the coal pile 300. At the same time, the gas entering the coal pile 300 will increase the pressure in the voids inside the coal pile 300, and the gas escapes and carries out the coal gas generated inside the coal pile 300.

[0047] It should be noted that the inner tube 212 is a U-shaped tube, and the liquid flowing inside it is in a recirculation state. The first delivery tube 231 and the second delivery tube 232 in the whole are in a periodic operation state.

[0048] In this embodiment, the total area of ​​the several small holes 213 is less than the cross-sectional area of ​​the first conveying pipe 231. The total area of ​​the small holes 213 is S1, and the cross-sectional area of ​​the first conveying pipe 231 is S2. S1 / S2 = 0.8 to 0.9.

[0049] In this embodiment, several small holes 213 along the axial direction of the outer tube 211 are symmetrically arranged on both sides of the inner tube 212. The central axes of the small holes 213 on both sides intersect, and the included angle is 30°.

[0050] The size of this area allows the gas ejected from each small hole 213 to have a high velocity, enabling it to reach the inside of the coal pile 300 more quickly. The small holes 213 are directly opposite the support member 120. When the cooling pipe 210 presses on the support plate 121, the support plate 121 acts as a partition, dividing the space formed by the support member 120 and the cooling pipe 210 into individual spaces, in which the small holes 213 are all located. Therefore, the airflow ejected from the small holes 213 impacts the support member 120, disperses, rises, and enters the coal pile 300 evenly.

[0051] The spray assembly 220 of this embodiment includes a spray pipe group 221 and a nozzle 222 installed on the spray pipe group 221. The spray pipe group 221 is composed of multiple concentric ring pipes of different diameters, and the nozzles 222 are distributed on different ring pipes. The nozzles 222 are atomizing nozzles 222.

[0052] In this embodiment, the sprinkler pipe assembly 221 is equipped with a lifting device 223. The sprinkler pipe assembly 221 is connected to a water pipe through a spring hose 224. The lifting device 223 includes a mounting plate 225 and a crane. The sprinkler pipe assembly 221 is mounted on the mounting plate 225, and the crane is mounted on the crossbeam of the room body 100. The crane is connected to the mounting plate 225, and an infrared thermostat is installed on the mounting plate 225.

[0053] In this embodiment, the mounting plate 225 is provided with several ring clips. The spray pipe assembly 221 is connected to the mounting plate 225 through the ring clips. The spray pipe assembly 221 is connected to the spring hose 224 through a horizontal pipe 226, which passes through the spray pipe assembly 221.

[0054] The aforementioned spray assembly 220 is configured such that, since the coal piles 300 are all conical structures, similar to mountain peaks, there is more coal in the center and less coal towards the outside. Therefore, the spraying is not uniform; that is, more coal is sprayed in areas with more coal and less coal is sprayed in areas with less coal. Consequently, the nozzles 222 distributed on the concentrically arranged ring pipes are uneven, with more nozzles 222 closer to the center and a thicker ring pipe closer to the center, resulting in a larger flow rate per unit time.

[0055] In this embodiment, the distributor 233 is equipped with an atomizer 234, which is installed on the inner tube 212 of the cooling pipe 210. The nozzle of the atomizer 234 is located at the connection point where the first conveying pipe 231 enters the distributor 233. This design allows for periodic atomization, atomizing the water in the second conveying pipe 232 into a small amount of water mist that enters the outer tube 211 and mixes with the gas from the first conveying pipe 231 before being sprayed out through the small hole 213. This cooling process also moistens each part of the coal pile 300, preventing spontaneous combustion.

[0056] The above-described embodiments are merely illustrative of certain implementations of the present invention, and are described in a relatively specific and detailed manner. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A safe coal storage facility, characterized in that: The device includes a housing (100) for stacking coal piles (300) and a cooling device (200) installed inside the housing (100) to cool the coal piles (300). The cooling device (200) includes a cooling pipe (210) installed in the floor of the housing (100), a spray assembly (220) installed on the crossbeam of the housing (100), and a flow conveying assembly (230) installed on the side wall of the housing (100) and connected to the cooling pipe (210). The flow conveying assembly (230) conveys low-temperature fluid to the area below the coal piles (300) through the cooling pipe (210) for cooling. The floor of the room (100) is provided with a horizontal groove (110) for supporting and covering the cooling pipe (210), and a support member (120) for supporting the cooling pipe (210) is provided in the horizontal groove (110). The flow-transfer assembly (230) includes a first flow-transfer pipe (231), a second flow-transfer pipe (232), and a flow divider (233). The first flow-transfer pipe (231) and the second flow-transfer pipe (232) are both connected to the cooling pipe (210) through the flow divider (233). The support member (120) has an arc-shaped structure, and the cooling pipe (210) is coaxially arranged inside it. The inner side of the support member (120) is provided with several support plates (121), which are used to support the cooling pipe (210) and guide the airflow around the cooling pipe (210). The cooling pipe (210) includes an outer pipe (211) and an inner pipe (212). The outer pipe (211) is fitted onto the inner pipe (212). The inner pipe (212) is a U-shaped pipe. The outer pipe (211) and the inner pipe (212) are respectively connected to the first conveying pipe (231) and the second conveying pipe (232). Gas is transported in the first conveying pipe (231), and cryogenic liquid is transported in the second conveying pipe (232). The outer pipe (211) is provided with a plurality of small holes (213) along the axial direction of the outer pipe (211), which are used to transport the gas in the outer pipe (211) out. The distributor (233) is equipped with an atomizer (234), which is installed on the inner tube (212) of the cooling pipe (210). The nozzle of the atomizer (234) is located at the connection point where the first delivery pipe (231) enters the distributor (233).

2. The safe coal storage building according to claim 1, characterized in that: The total area of ​​the plurality of small holes (213) is less than the cross-sectional area of ​​the first conveying pipe (231). The total area of ​​the small holes (213) is S1, and the cross-sectional area of ​​the first conveying pipe (231) is S2. S1 / S2 = 0.8~0.

9.

3. A safe coal storage plant according to claim 1, characterized in that: The plurality of small holes (213) along the axial direction of the outer tube (211) are symmetrically arranged on both sides of the inner tube (212), and the central axes of the small holes (213) on both sides intersect at an angle of 30°.

4. A safe coal storage plant according to claim 1, characterized in that: The spray assembly (220) includes a spray pipe group (221) and a nozzle (222) installed on the spray pipe group (221). The spray pipe group (221) is composed of multiple concentric ring pipes of different diameters. The nozzle (222) is distributed on different ring pipes. The nozzle (222) is an atomizing nozzle (222).

5. A safe coal storage plant according to claim 4, characterized in that: The spray pipe assembly (221) is equipped with a lifting device (223). The spray pipe assembly (221) is connected to a water pipe via a spring hose. The lifting device (223) includes a mounting plate (225) and a crane. The spray pipe assembly (221) is mounted on the mounting plate (225). The crane is mounted on the crossbeam of the building body (100). The crane is connected to the mounting plate (225). An infrared thermostat is installed on the mounting plate (225).

6. A safe coal storage building according to claim 5, characterized in that: The mounting plate (225) is provided with several ring clips. The spray pipe assembly (221) is connected to the mounting plate (225) through the ring clips. The spray pipe assembly (221) is connected to the spring hose through a horizontal pipe (226). The horizontal pipe (226) passes through the spray pipe assembly (221).

Images