Injection type dry ice phase change fire preventing and extinguishing cooling device

Abstract

The utility model relates to the technical field of fire preventing and extinguishing cooling, and discloses an injection type dry ice phase change fire preventing and extinguishing cooling device which comprises a heat exchange cylinder, a feeding port is formed in the top end of the heat exchange cylinder, and a sealing cover is arranged at the top end of the feeding port; the carbon dioxide discharge pipe is arranged on one side of the top end of the heat exchange cylinder; the end covers are arranged at the two ends of the heat exchange cylinder, a plurality of heat exchange pipes are arranged between the two end covers, and a plurality of through holes are formed in the surfaces of the end covers; and the air inlet barrel is arranged on the outer side of one end cover, and an air supply device is arranged at one end of the air inlet barrel. Air is introduced into the heat exchange tube in the heat exchange cylinder through the air supply device, dry ice is added into the heat exchange cylinder from the feeding port, the dry ice sublimates into carbon dioxide gas to be exhausted through the exhaust hole, the fire prevention and extinguishing effect is achieved, meanwhile, the ambient temperature is rapidly reduced due to sublimation of the dry ice, and the air passing through the heat exchange tube is blown out after the temperature is reduced; therefore, the quick cooling effect is achieved. The device has the advantages of simple structure, high practicability, rapidness and convenience in operation and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of fire prevention, extinguishing and cooling, and in particular to an ejection type dry ice phase change fire prevention, extinguishing and cooling device. Background Art

[0002] In the process of coal mining, spontaneous combustion occurs frequently due to the volatility of coal itself, the low critical point of ignition, and the high density of oxygen, sulfur, and water contained in it. Coal is repeatedly oxidized underground for a long time, causing its own temperature to rise continuously, and then ignites, which greatly affects the normal progress of mining work and even causes fires. In addition, some coal mines have the problem of too high underground temperatures, and personnel cannot work normally.

[0003] Therefore, it is necessary to provide an induced dry ice phase change fire prevention and cooling device to solve the above problems, reduce the air temperature underground, and provide a relatively comfortable environment for personnel to work. Utility Model Content

[0004] In response to the technical problems raised above, an ejection type dry ice phase change fire prevention and cooling device is provided. The utility model mainly utilizes the dry ice added to the inside of the heat exchange tube to generate carbon dioxide after sublimation, which is discharged from the exhaust hole to play a role in fire prevention and extinguishing. At the same time, the dry ice sublimates and absorbs heat to reduce the temperature of the air passing through the heat exchange tube, cools the high-temperature gas introduced and blows it out, solving the above-mentioned problems.

[0005] The technical means adopted by the utility model are as follows:

[0006] An ejection type dry ice phase change fire prevention and cooling device, comprising

[0007] A heat exchange cylinder, wherein a feeding port for feeding dry ice is provided at the top of the heat exchange cylinder, and a sealing cover is provided at the top of the feeding port;

[0008] A carbon dioxide discharge pipe is arranged on one side of the top of the heat exchange tube;

[0009] End covers are arranged at both ends of the heat exchange tube, a plurality of heat exchange tubes are arranged between the two end covers, and a plurality of through holes are arranged on the surface of the end covers;

[0010] The air inlet tube is arranged on the outside of one of the end covers. An air supply device is provided at one end of the air inlet tube. The air introduced by the air supply device enters the heat exchange tube of the heat exchange tube. The dry ice fed through the feeding port sublimates and absorbs heat, so that the air in the heat exchange tube is rapidly cooled.

[0011] Furthermore, the air supply device is an ejector, and at least one ejector is provided at one end of the air inlet cylinder.

[0012] Furthermore, the ejector includes an outer cylinder and an inner cylinder, the front end of the outer cylinder is an air inlet cavity, at least one air inlet for introducing high-pressure gas is provided on the outer wall of the middle cavity section, the inner cylinder has a gradually expanding inner cavity structure, the inner cylinder is coaxial with and connected to the cavity of the outer cylinder, a gap is provided between the front end of the inner cylinder and the end of the air inlet cavity of the outer cylinder, and a space for accommodating high-pressure gas is formed between the outer side of the middle area of ​​the inner cylinder and the middle cavity section of the outer cylinder.

[0013] Furthermore, a mounting plate is provided at the top of the air inlet tube, a high-pressure air filter is provided at the bottom of the mounting plate, and the high-pressure air filter is connected to the mounting plate by screws, and the air outlet end of the high-pressure air filter is connected to the air inlet of the ejector through an air outlet pipe.

[0014] Furthermore, a connecting plate is provided at the top of the feeding port, a connecting frame is provided at one side of the feeding port, a sealing cover is provided at the top of the connecting plate, a rotating frame is provided at the top of the sealing cover, and the rotating frame is rotatably connected to the connecting frame through a connecting shaft.

[0015] Furthermore, at least one rotating seat is provided on the side of the feeding port, and the interior of the rotating seat is rotatably connected to a limiting bolt through a second connecting shaft, the top thread of the limiting bolt is provided with a fixing nut, and the sides of the connecting plate and the sealing cover are provided with limiting grooves corresponding to the limiting bolt.

[0016] Furthermore, a pressure gauge and a safety valve are provided on a side of the top end of the heat exchange cylinder away from the carbon dioxide discharge pipe.

[0017] Furthermore, a mounting plate 1 is provided at one end of the air inlet cylinder away from the ejector, and the mounting plate 1 is connected to an adjacent end cover via mounting bolts.

[0018] Furthermore, a protective cover is provided at one end of the heat exchange cylinder away from the air inlet cylinder, and a mounting plate 2 is provided at one end of the protective cover close to the end cover. The mounting plate 2 is connected to the adjacent end cover by mounting bolts, and a protective net is provided inside the protective cover.

[0019] Furthermore, support frames are provided on both sides of the heat exchange tube, and a sewage outlet is provided at the bottom of the heat exchange tube.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] The utility model passes air into the heat exchange tube inside the heat exchange tube through the air supply device, and dry ice is added into the heat exchange tube from the feeding port. The dry ice sublimates into carbon dioxide gas and is discharged from the exhaust hole to prevent fire. At the same time, the sublimation of dry ice causes the surrounding temperature to drop rapidly, so that the temperature of the air passing through the heat exchange tube is reduced, thereby achieving a rapid cooling effect.

[0022] In addition, as a preference, the air supply device provided in the utility model is an ejector, which can introduce high-pressure gas into the ejector through a high-pressure air filter to mix with normal-pressure gas and pass it into the heat exchange tube to exchange heat with the heat exchange tube inside the heat exchange tube.

[0023] The utility model has the advantages of simple structure, strong practicality, quick and convenient operation, etc. Based on the above reasons, the utility model can be widely promoted in the technical fields such as coal mining. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 This is one of the structural diagrams of the utility model;

[0026] Figure 2 This is the second structural diagram of the utility model;

[0027] Figure 3 This is a schematic diagram of the explosion structure of the heat exchange cylinder of the utility model;

[0028] Figure 4 For this utility model Figure 2 A in the figure is an enlarged structural diagram.

[0029] In the figure: 1. heat exchange tube; 101. support frame; 102. carbon dioxide exhaust pipe; 103. pressure gauge; 104. safety valve; 105. feeding port; 106. connecting plate; 107. connecting frame; 108. connecting shaft one; 109. sealing cover; 1010. rotating frame; 1011. rotating seat; 1012. connecting shaft two; 1013. limiting bolt; 1014. fixing nut; 1015. end cover; 1016. through hole; 1017. heat exchange tube; 2. air inlet tube; 201. mounting plate one; 202. ejector; 203. mounting plate; 204. high pressure air filter; 205. exhaust pipe; 3. protective cover; 301. mounting plate two; 302. protective net. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] See also Figures 1 to 4 In the embodiment of the utility model, an ejection type dry ice phase change fire prevention and cooling device comprises:

[0033] The heat exchange cylinder 1 has a feeding port 105 for feeding dry ice at the top of the heat exchange cylinder 1, so that dry ice can be quickly added to the interior of the heat exchange cylinder 1, and a sealing cover 109 is provided at the top of the feeding port 105 to seal the end of the feeding port 105;

[0034] The carbon dioxide discharge pipe 102 is arranged on one side of the top of the heat exchange tube 1. The dry ice falling into the cavity of the heat exchange tube 1 sublimates, and a large amount of carbon dioxide is generated and discharged through the carbon dioxide discharge pipe 102. In this embodiment, preferably, a pressure gauge 103 and a safety valve 104 are provided on the side of the top of the heat exchange tube 1 away from the carbon dioxide discharge pipe 102. The pressure gauge 103 detects the pressure in the cavity of the heat exchange tube 1. The sublimation of dry ice will generate pressure. When the pressure exceeds the standard, the safety valve 104 automatically opens, and the pressure is released through the safety valve 104.

[0035] End covers 1015 are arranged at both ends of the heat exchange tube 1. A plurality of heat exchange tubes 1017 are arranged between the two end covers 1015. The heat exchange tubes 1017 are used to exchange heat and cool the incoming hot air. A plurality of through holes 1016 are arranged on the surface of the end covers 1015 so as not to interfere with the circulation of air.

[0036] The air inlet cylinder 2 is arranged on the outside of one of the end covers 1015. In the present embodiment, at least one ejector 202 is provided at one end of the air inlet cylinder 2, a mounting plate 203 is provided at the top end of the air inlet cylinder 2, a high-pressure air filter 204 is provided at the bottom of the mounting plate 203, and the high-pressure air filter 204 is connected to the mounting plate 203 by screws, so as to facilitate the quick disassembly and assembly of the high-pressure air filter 204, and the air outlet end of the high-pressure air filter 204 is connected to the air inlet of the ejector 202 by an air outlet pipe 205, and the high-pressure gas is passed into the ejector 202 through the high-pressure air filter 204.

[0037] In this embodiment, preferably, a mounting plate 201 is provided at one end of the air inlet 2 away from the ejector 202 , and the mounting plate 201 is connected to the adjacent end cover 1015 by mounting bolts, so as to facilitate quick disassembly and assembly of the air inlet 2 .

[0038] In this embodiment, preferably, a protective cover 3 is provided at the end of the heat exchange tube 1 away from the air inlet tube 2, and a mounting plate 2 301 is provided at the end of the protective cover 3 close to the end cover 1015. The mounting plate 2 301 is connected to the adjacent end cover 1015 by mounting bolts, so as to facilitate the quick installation of the protective cover 3, and a protective net 302 is provided inside the protective cover 3 to protect the surface of the end cover 1015.

[0039] In this embodiment, preferably, support frames 101 are provided on both sides of the heat exchange tube 1 to stably support the heat exchange tube 1 , and a sewage outlet is provided at the bottom of the heat exchange tube 1 to discharge accumulated water and impurities in the closed cavity of the heat exchange tube 1 .

[0040] In this embodiment, preferably, the ejector 202 includes an outer cylinder and an inner cylinder, the front end of the outer cylinder is an air inlet cavity, at least one air inlet for introducing high-pressure gas is provided on the outer wall of the middle cavity section, the inner cylinder has a gradually expanding inner cavity structure, the chambers of the inner cylinder and the outer cylinder are coaxial and connected, a gap is provided between the front end of the inner cylinder and the end of the air inlet cavity of the outer cylinder, and a space for accommodating high-pressure gas is formed between the outer side of the middle area of ​​the inner cylinder and the middle cavity section of the outer cylinder.

[0041] In this embodiment, preferably, a connecting plate 106 is provided at the top of the feeding port 105, a connecting frame 107 is provided at one side of the feeding port 105, a sealing cover 109 is provided at the top of the connecting plate 106, a rotating frame 1010 is provided at the top of the sealing cover 109, and the rotating frame 1010 is rotatably connected to the connecting frame 107 through a connecting shaft 108, so that the sealing cover 109 can be rotated to open, so as to facilitate the addition of dry ice.

[0042] In the present embodiment, preferably, at least one rotating seat 1011 is provided on the side of the feeding port 105, and the interior of the rotating seat 1011 is rotatably connected to the limiting bolt 1013 through the connecting shaft 1012, so that the position of the limiting bolt 1013 can be adjusted without interfering with the rotation and opening of the sealing cover 109, and the top thread of the limiting bolt 1013 is provided with a fixing nut 1014, and the side of the connecting plate 106 and the sealing cover 109 is provided with a limiting groove corresponding to the limiting bolt 1013, so that the limiting bolt 1013 can be rotated to the inside of the limiting groove, and the position of the limiting bolt 1013 is limited by the fixing nut 1014.

[0043] When in use, first loosen the fixing nut 1014, and rotate the limit bolt 1013 to rotate it downward to release the restriction on the sealing cover 109, then rotate the sealing cover 109 with the connecting shaft 108 as the axis, so as to open the sealing cover 109, add dry ice into the interior of the heat exchange cylinder 1 through the feeding port 105, and close the sealing cover 109, the dry ice falling into the cavity of the heat exchange cylinder 1 sublimates, and the generated carbon dioxide is discharged through the carbon dioxide discharge pipe 102;

[0044] Then the hot air is introduced into the interior of the heat exchange tube 1 through the ejector 202, and the high-pressure air filter 204 passes the high-pressure gas into the ejector 202 to mix with the hot air, and enters the heat exchange tube 1017 inside the heat exchange tube 1 through the through hole 1016 on the end cover 1015 at one end, and sublimates and absorbs heat with the dry ice that falls into the cavity of the heat exchange tube 1, so that the air in the heat exchange tube 1017 exchanges heat and cools down with it, and then the cooled cold air is discharged through the through hole 1016 on the end cover 1015 at the other end.

[0045] The device provided by the utility model has two main functions. First, air is introduced into the heat exchange tube through the air supply device (preferably an ejector) as a power source, and then the dry ice absorbs heat through sublimation, and the generated carbon dioxide is discharged from the heat exchange tube, so that the concentration of carbon dioxide in the external environment increases, which plays a role in extinguishing fire in disguise; second, the dry ice absorbs heat and sublimates, which quickly lowers the temperature of the air, thereby reducing the air temperature underground, so that personnel have a relatively comfortable working environment.

[0046] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An ejection type dry ice phase change fire prevention and cooling device, characterized in that: include: A heat exchange cylinder (1), wherein a feeding port (105) for feeding dry ice is provided at the top of the heat exchange cylinder (1), and a sealing cover (109) is provided at the top of the feeding port (105); A carbon dioxide discharge pipe (102) is arranged on one side of the top end of the heat exchange tube (1); End covers (1015) are arranged at both ends of the heat exchange tube (1), a plurality of heat exchange tubes (1017) are arranged between the two end covers (1015), and a plurality of through holes (1016) are arranged on the surface of the end covers (1015); An air inlet tube (2) is arranged on the outside of one of the end covers (1015), and an air supply device is provided at one end of the air inlet tube (2). The air introduced by the air supply device enters the heat exchange tube of the heat exchange tube, and the dry ice fed through the feeding port sublimates and absorbs heat, so that the air in the heat exchange tube is rapidly cooled.

2. The induced dry ice phase change fire prevention and cooling device according to claim 1 is characterized in that: The air supply device is an ejector (202), and at least one ejector (202) is provided at one end of the air inlet cylinder (2).

3. The induced dry ice phase change fire prevention and cooling device according to claim 2 is characterized in that: The ejector (202) comprises an outer cylinder and an inner cylinder, the front end of the outer cylinder is an air inlet cavity, at least one air inlet for introducing high-pressure gas is provided on the outer wall of the middle cavity section, the inner cylinder has a gradually expanding inner cavity structure, the inner cylinder is coaxial with and connected to the cavity of the outer cylinder, a gap is provided between the front end of the inner cylinder and the end of the air inlet cavity of the outer cylinder, and a space for accommodating high-pressure gas is formed between the outer side of the middle area of ​​the inner cylinder and the middle cavity section of the outer cylinder.

4. The induced dry ice phase change fire prevention and cooling device according to claim 3 is characterized in that: A mounting plate (203) is provided at the top of the air inlet cylinder (2), a high-pressure air filter (204) is provided at the bottom of the mounting plate (203), and the high-pressure air filter (204) is connected to the mounting plate (203) by screws, and an air outlet end of the high-pressure air filter (204) is connected to the air inlet of the ejector (202) by an air outlet pipe (205).

5. The induced dry ice phase change fire prevention and cooling device according to claim 1 is characterized in that: A connecting plate (106) is provided at the top of the feeding port (105), a connecting frame (107) is provided at one side of the feeding port (105), a sealing cover (109) is provided at the top of the connecting plate (106), a rotating frame (1010) is provided at the top of the sealing cover (109), and the rotating frame (1010) is rotatably connected to the connecting frame (107) via a connecting shaft (108).

6. The induced dry ice phase change fire prevention and cooling device according to claim 5 is characterized in that: At least one rotating seat (1011) is provided on the side of the feeding port (105); the interior of the rotating seat (1011) is rotatably connected to a limiting bolt (1013) via a second connecting shaft (1012); a fixing nut (1014) is provided on the top thread of the limiting bolt (1013); and limiting grooves corresponding to the limiting bolt (1013) are provided on the sides of the connecting plate (106) and the sealing cover (109).

7. The induced dry ice phase change fire prevention and cooling device according to claim 1 is characterized in that: A pressure gauge (103) and a safety valve (104) are provided on the side of the top end of the heat exchange cylinder (1) away from the carbon dioxide discharge pipe (102).

8. The induced dry ice phase change fire prevention and cooling device according to claim 4 is characterized in that: A mounting plate 1 (201) is provided at one end of the air inlet cylinder (2) away from the ejector (202), and the mounting plate 1 (201) is connected to an adjacent end cover (1015) via mounting bolts.

9. The induced dry ice phase change fire prevention and cooling device according to claim 1 is characterized in that: A protective cover (3) is provided at one end of the heat exchange cylinder (1) away from the air inlet cylinder (2); a second mounting plate (301) is provided at one end of the protective cover (3) close to the end cover (1015); the second mounting plate (301) is connected to the adjacent end cover (1015) via mounting bolts; and a protective net (302) is provided inside the protective cover (3).

10. The induced dry ice phase change fire prevention and cooling device according to claim 1 is characterized in that: Support frames (101) are provided on both sides of the heat exchange cylinder (1), and a sewage outlet is provided at the bottom of the heat exchange cylinder (1).

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