Liquid carbon dioxide fire extinguishing system storage tank

Abstract

The application relates to the technical field of fire-extinguishing constant-pressure storage tanks, and discloses a liquid carbon dioxide fire-preventing and extinguishing system pressure storage tank which comprises a storage tank body, a gas outlet pipe and a gas inlet pipe fixedly arranged in the storage tank body, three gas storage tanks fixedly arranged on the left side inner wall of the storage tank body, and a push plate slidingly connected in the storage tank body. The liquid carbon dioxide fire-preventing and extinguishing system pressure storage tank can send a warning through a detection mechanism when the pressure on the right side of the push plate decreases, the three gas storage tanks on the left side are opened, the left side of the push plate is pressurized, the push plate will move to the right side when the pressure on the left side of the push plate is greater than that on the right side, the push plate moves at a high speed, the loose valve is closed, the right side pressure is increased through the right movement of the push plate, carbon dioxide condensation can be avoided, carbon dioxide condensation caused by pressure reduction can be avoided to cause blockage, and the liquid carbon dioxide fire-preventing and extinguishing system pressure storage tank can be used without electricity.

Description

Technical Field

[0001] This invention relates to the field of fire extinguishing constant pressure storage tank technology, specifically a liquid carbon dioxide fire extinguishing system pressure storage tank. Background Technology

[0002] The development of methods for preventing and controlling coal fire disasters mainly revolves around two aspects: oxygen reduction and cooling. Among them, oxygen reduction is more effective. Among new fire extinguishing materials, liquid carbon dioxide fire extinguishing technology has the characteristics of oxygen reduction, cooling, and explosion prevention. It has achieved significant results in the prevention and control of coal fire disasters and has become the fire extinguishing device currently used in coal mines. It uses the pressure difference between the inside and outside of the storage tank to pressurize liquid carbon dioxide into the goaf area with the risk of spontaneous combustion of coal through pipelines. Then, it uses the vaporization and heat absorption of liquid carbon dioxide and inertization to suffocate the fire area.

[0003] The existing patent CN114949716A proposes a pressure storage tank with detection and constant pressure functions. The constant pressure detection mechanism is set on the tank body, which can accurately detect whether the pressure value of liquid carbon dioxide in the tank has dropped to a preset minimum value. When it drops to the preset minimum value, the photoelectric sensor transmits the signal to the controller, and the controller generates a drive signal. The drive signal generated by the controller controls the mechanical pressurization mechanism to reduce the volume of the tank, increase the pressure in the tank, and prevent the liquid carbon dioxide in the tank from freezing and causing pipe blockage.

[0004] This device is mostly used underground in coal mines. In the event of a fire, it may cause circuit damage. The battery may spontaneously combust in high-temperature environments, and the battery's power supply time is limited. Therefore, the battery is not a priority option. This may result in the device lacking a power supply structure, the pressurization drive structure in the aforementioned patent failing to operate, the constant pressure storage tank losing pressure, and carbon dioxide freezing. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a liquid carbon dioxide fire extinguishing system pressurized storage tank, which solves the problems mentioned in the background art, such as circuit damage, lack of power supply structure in the device, failure of the pressurization drive structure in the aforementioned patent, loss of pressure inside the constant pressure storage tank, and carbon dioxide freezing.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a liquid carbon dioxide fire extinguishing system pressurized storage tank, comprising a tank body, a detection mechanism provided on the top of the tank body, an outlet pipe and an inlet pipe fixedly inserted inside the tank body, three gas storage tanks fixedly installed on the left inner wall of the tank body, a support plate fixedly installed inside the tank body, a plurality of vent pipes fixedly inserted inside the support plate, a push plate slidably connected inside the tank body, a sealing gasket fixedly installed on the side of the push plate near the support plate, and an annular frame fixedly connected to the side of the inner wall of the tank body away from the push plate.

[0007] Preferably, three air guide pipes are fixedly inserted inside the main body of the storage tank, and the outer surfaces of the three air guide pipes are threaded with plugs. A connecting pipe is fixedly installed inside the storage tank. The connecting pipe has two first air holes, the air guide pipe has two second air holes, and the air guide pipe has two third air holes. A connecting pipe is fixedly installed on the right outer surface of the three storage tanks.

[0008] Using the above technical solution, the gas guide tube is rotated by twisting the plug, so that the third vent on the gas guide tube corresponds to the vent on the connecting pipe. At this time, the first vent and the second vent correspond. The first vent delivers the gas inside the gas tank to the connecting pipe, and then the gas inside the connecting pipe enters the gas guide tube. The gas is then delivered to the left side of the support plate. After filling the inside, the gas inside enters the vent pipe. Under the action of increased air pressure, the push plate and sealing gasket on the right side move to the right, thereby increasing the pressure between the support plate and the push plate. The squeezing force on the right side increases, achieving a constant pressure effect.

[0009] Preferably, a pneumatic pipe is fixedly inserted inside the main body of the storage tank. A control valve is fixedly connected to one end of the pneumatic pipe away from the main body of the storage tank. A detection pipe is fixedly connected to the side of the control valve away from the pneumatic pipe. A base plate is fixedly installed inside the detection pipe. An alarm is fixedly installed on the top outer surface of the base plate. A top plate is slidably connected to the inner wall of the detection pipe.

[0010] By adopting the above technical solution, the detection tube and the pressure tank are connected by opening the control valve. Then, the air outlet in the bottom plate achieves a through-flow effect, making the air pressure inside the detection tube the same as the air pressure inside the main body of the storage tank. The air pressure will then drive the top plate to move upward, gradually moving away from the alarm and suspending it inside the detection tube. When the air pressure inside the main body of the storage tank decreases, the air pressure inside the detection tube will decrease, and the top plate will move downward. When the air pressure drops to a certain level, the top plate will contact and squeeze the alarm, thus achieving the effect of early warning and realizing the function of detecting air pressure.

[0011] Preferably, the outlet pipe is internally connected to a flexible hose, the right side of the flexible hose is internally connected to a constant pressure pipe, the outer surface of the constant pressure pipe is movably fitted with an annular cover, the right side of the annular cover is provided with several spray heads, the outer surface of the annular cover is movably fitted with a protective cover, the left outer surface of the annular cover is fixedly installed with a drive tooth, the bottom outer wall of the protective cover is fixedly installed with a stabilizing plate, the outer surface of the constant pressure pipe is fixedly installed with a motor, and the output end of the motor is fixedly installed with a rotating tooth.

[0012] By adopting the above technical solution, a movable stabilizing plate is set up to drive the annular cover and protective cover to move. This allows the stabilizing plate to move multiple spray heads. The spraying mechanism is placed in the designated fire extinguishing area, and then the motor is turned on. The motor drives the rotating gear to rotate, which in turn drives the drive gear to rotate. The drive gear drives the annular cover to rotate, and the annular cover drives multiple spray pipes to spray, achieving a convenient and uniform spraying effect. In the absence of power, the multiple spray heads can achieve the effect of spraying carbon dioxide from multiple angles.

[0013] Preferably, the outer surfaces of the three air guide pipes are rotatably connected to the interior of the three connecting pipes, and the interiors of the three air storage tanks are movably connected to the outer surfaces of the three air guide pipes.

[0014] The above technical solution achieves a stable effect by connecting the gas guide pipe and the connecting pipe, and can guide and transmit gas. The connection between the gas storage tank and the gas guide pipe achieves a stable structure and has a certain sealing effect.

[0015] Preferably, the outer surface of the base plate has a plurality of air vents, and the plurality of air vents are arranged in a circumferential array on the base plate.

[0016] The above technical solution uses an air outlet on the base plate to connect the detection tube and the air pressure tube. The base plate is used to support the alarm.

[0017] Preferably, the outer surface of the rotating tooth is meshed with the outer surface of the driving tooth.

[0018] By adopting the above technical solution, the effect of stable rotation of the drive tooth is achieved by connecting the rotating tooth with the drive tooth. The drive tooth will drive the annular cover to rotate, and then the annular cover will drive the spray head to rotate at high speed, thus achieving the effect of uniform rotation and spraying.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The liquid carbon dioxide fire extinguishing system's pressure storage tank triggers an alarm when the pressure on the right side of the push plate decreases. Then, the three gas storage tanks on the left side open, simultaneously pressurizing the left side of the push plate. When the pressure on the left side of the push plate exceeds the pressure on the right side, the push plate moves to the right. Due to the rapid movement of the push plate, the tension valve closes, and the rightward movement of the push plate increases the pressure on the right side, thus preventing carbon dioxide condensation and stabilizing the pressure on the right side of the push plate. This prevents carbon dioxide from condensing and causing blockages due to pressure reduction and allows for operation even without electricity.

[0021] 2. The liquid carbon dioxide fire extinguishing system uses a pressure storage tank. When the pressure inside the main body of the storage tank decreases, the bottom plate has an air vent. The top plate inside the detection tube loses the support of air pressure and moves down due to the decrease in air pressure. The top plate contacts the top of the alarm and triggers the switch, causing the alarm to sound an alarm. This achieves the effect of pressure detection and early warning on the right side of the main body of the storage tank.

[0022] 3. This liquid carbon dioxide fire extinguishing system, with the availability of electricity, moves the stabilizing plate to the fire extinguishing area, opens the gas outlet pipe and motor, drives the rotating gear to rotate, which in turn drives the drive gear to rotate along the constant pressure pipe. The gas is then ejected through the spray head, achieving a rapid and uniform spraying effect, thus increasing the fire extinguishing range. In the absence of power supply, the system still achieves rapid spraying due to the presence of multiple spray heads, allowing for multi-angle spraying. However, the spraying distance is relatively limited, but the overall fire extinguishing range can still be increased. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a side view of the structure of the present invention;

[0025] Figure 3 This is a frontal sectional view of the structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the spraying mechanism of the present invention;

[0027] Figure 5 This is a frontal cross-sectional view of the spraying mechanism of the present invention;

[0028] Figure 6 The structure of this invention Figure 3 Enlarged view of point A in the middle;

[0029] Figure 7 The structure of this invention Figure 3 Enlarged diagram of point B in the middle.

[0030] In the diagram: 1. Main body of the storage tank; 2. Detection mechanism; 201. Air pressure pipe; 202. Control valve; 203. Detection pipe; 204. Base plate; 205. Alarm; 206. Top plate; 3. Air outlet pipe; 4. Spraying mechanism; 401. Hose; 402. Constant pressure pipe; 403. Annular cover; 404. Spray head; 405. Protective cover; 406. Drive gear; 407. Stabilizing plate; 408. Motor; 409. Rotating gear; 5. Air inlet pipe; 6. Air storage tank; 601. Air guide pipe; 602. Plug; 603. Connecting pipe; 604. First air hole; 605. Second air hole; 606. Third air hole; 607. Connecting pipe; 7. Support plate; 8. Vent pipe; 9. Push plate; 10. Sealing gasket; 11. Annular frame. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1:

[0033] Please refer to the following: Figure 1-7 ,

[0034] The air inlet pipe 5 is designed to pressurize and replenish the main body of the storage tank 1 with liquid carbon dioxide. After the air inlet pipe 5 is sealed, when it is necessary to extinguish the fire with the liquid carbon dioxide inside the main body of the storage tank 1, the air outlet pipe 3 is opened, and the liquid carbon dioxide inside the main body of the storage tank 1 will be discharged through the air outlet pipe 3. This reduces the air pressure inside the main body of the storage tank 1. The detection mechanism 2 monitors the air pressure inside the main body of the storage tank 1 in real time. When the air pressure inside the main body of the storage tank 1 decreases, the liquid carbon dioxide inside the main body of the storage tank 1 may freeze. To prevent freezing and blockage of the air outlet pipe 3, when the air pressure inside the main body of the storage tank 1 decreases, the alarm 205 sounds a warning, then the tension valve is closed, and then the plug 602 is turned. The plug 602 drives the air guide pipe 601 to rotate, which in turn drives the third air hole 606 to rotate and align with the air outlet end inside the connecting pipe 607. Then, the gas guide pipe 601 is connected to the connecting pipe 607. The first gas hole 604 pushes the high-pressure gas inside the gas storage tank 6 into the gas guide pipe 601, allowing the gas inside the gas storage tank 6 to enter the left side of the support plate 7. As the gas pressure gradually increases, the gas on the left side of the support plate 7 will enter the right side of the support plate 7 through the vent pipe 8. Then, as the gas pressure increases, when the gas pressure on the left side of the push plate 9 gradually exceeds the gas pressure on the right side, the push plate 9 will move to the right under the influence of the left gas pressure. Then, the push plate 9 will slide along the inner wall of the tank body 1, thereby achieving the effect of squeezing and pushing the carbon dioxide on the right side. Because the outlet pipe 3 has a relatively small opening, the gas pressure on the right side of the push plate 9 will gradually increase under the push of the push plate 9, preventing the carbon dioxide from freezing. It can also be operated without power, increasing its practicality.

[0035] Working principle: When the pressure on the right side of the push plate 9 decreases, the detection mechanism 2 issues an early warning, and then the three gas storage tanks 6 on the left side open, simultaneously pressurizing the left side of the push plate 9. When the pressure on the left side of the push plate 9 is greater than the pressure on the right side, the push plate 9 will move to the right. Because the push plate 9 moves quickly, the tension valve closes, and the rightward movement of the push plate 9 will increase the pressure on the right side, thus preventing carbon dioxide condensation. Compared with related technologies, the liquid carbon dioxide fire extinguishing system pressure storage tank provided by this invention has the following beneficial effects: it achieves the effect of stabilizing the pressure on the right side of the push plate 9, avoids carbon dioxide condensation and blockage due to pressure reduction, and can be used in the absence of electricity.

[0036] Example 2:

[0037] Please refer to the following: Figure 1-7 ,

[0038] When the pressure inside the main body 1 of the storage tank decreases, because there are several air vents on the bottom plate 204, the top plate 206 inside the detection tube 203 will lose the support of air pressure. The top plate 206 will move down as the air pressure inside the main body 1 of the storage tank decreases. The top plate 206 will contact the top of the alarm 205 and trigger the switch, causing the alarm 205 to sound an alarm, so as to achieve the effect of pressure detection and early warning on the right side of the main body 1 of the storage tank.

[0039] Working principle: When the pressure inside the main body 1 of the storage tank decreases, the bottom plate 204 is provided with an air vent. The top plate 206 inside the detection tube 203 will lose the support of air pressure. The top plate 206 will move down due to the decrease in air pressure. The top plate 206 will contact the top of the alarm 205 and trigger the switch, causing the alarm 205 to sound an alarm. Compared with related technologies, the liquid carbon dioxide fire extinguishing system pressure storage tank provided by the present invention has the following beneficial effects: it achieves the effect of pressure detection and early warning on the right side of the main body 1 of the storage tank.

[0040] Example 3:

[0041] Please refer to the following: Figure 1-7 ,

[0042] To expedite fire suppression with power available, the stabilizing plate 407 is moved to the fire suppression area. Then, the vent pipe 3 is opened, and the motor 408 is activated. The motor 408 drives the rotating gear 409, which in turn drives the driving gear 406. The driving gear 406, in turn, drives the annular cover 403. The annular cover 403 rotates along the constant pressure pipe 402, causing the liquid carbon dioxide inside to rotate and be ejected through the spray head 404, achieving rapid and uniform spraying. This accelerates the spraying of liquid carbon dioxide and increases the fire suppression area. Even without power, the multiple spray heads 404 allow for rapid spraying at multiple angles, although the spraying distance is relatively limited. This method, while increasing the fire suppression area, still provides a viable alternative.

[0043] Working principle: Under the premise of power supply, in order to speed up the fire extinguishing process, the stabilizing plate 407 is moved to the fire extinguishing area, the gas outlet pipe 3 and the motor 408 are opened, driving the rotating gear 409 to rotate, driving the drive gear 406 to rotate, driving the annular cover 403 to rotate, and rotating along the constant pressure pipe 402, causing the liquid carbon dioxide inside to rotate, and being thrown out through the spray head 404 to achieve a rapid and uniform spraying effect. It accelerates the spraying of liquid carbon dioxide and can increase the fire extinguishing range. In the absence of power supply, because there are several spray heads 404, a rapid spraying effect can be achieved, and multi-angle spraying can be achieved. However, the spraying distance is relatively limited. Compared with related technologies, the liquid carbon dioxide fire extinguishing system pressure storage tank provided by this invention has the following beneficial effects: it can increase the fire extinguishing range.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressurized storage tank for a liquid carbon dioxide fire extinguishing system, comprising a tank body (1), characterized in that: A detection mechanism (2) is provided on the top of the main body (1). An air outlet pipe (3) and an air inlet pipe (5) are fixedly inserted inside the main body (1). A spraying mechanism (4) is provided on the right side of the air outlet pipe (3). Three gas storage tanks (6) are fixedly installed on the left inner wall of the main body (1). A support plate (7) is fixedly installed inside the main body (1). Several vent pipes (8) are fixedly inserted inside the support plate (7). A push plate (9) is slidably connected inside the main body (1). A sealing gasket (10) is fixedly installed on the side of the push plate (9) near the support plate (7). An annular frame (11) is fixedly connected on the side of the inner wall of the main body (1) away from the push plate (9). Three air guide tubes (601) are inserted, and the outer surfaces of the three air guide tubes (601) are threaded with caps (602). A connecting pipe (603) is fixedly installed inside the air storage tank (6). Two first air holes (604) are opened inside the connecting pipe (603). Two second air holes (605) are opened inside the air guide tube (601). Two third air holes (606) are opened inside the air guide tube (601). A connecting pipe (607) is fixedly installed on the right outer surface of the three air storage tanks (6). The outer surfaces of the three air guide tubes (601) are rotatably connected to the interior of the three connecting pipes (607). The interior of the three air storage tanks (6) is movably connected to the outer surfaces of the three air guide tubes (601).

2. The pressurized storage tank for a liquid carbon dioxide fire extinguishing system according to claim 1, characterized in that: A pneumatic pipe (201) is fixedly inserted inside the main body (1) of the storage tank. A control valve (202) is fixedly connected to one end of the pneumatic pipe (201) away from the main body (1). A detection pipe (203) is fixedly connected to one side of the control valve (202) away from the pneumatic pipe (201). A base plate (204) is fixedly installed inside the detection pipe (203). An alarm (205) is fixedly installed on the top outer surface of the base plate (204). A top plate (206) is slidably connected to the inner wall of the detection pipe (203).

3. A pressurized storage tank for a liquid carbon dioxide fire extinguishing system according to claim 1, characterized in that: The air outlet pipe (3) is internally connected to a flexible hose (401), and the right side of the flexible hose (401) is fixedly connected to a constant pressure pipe (402). The outer surface of the constant pressure pipe (402) is movably fitted with an annular cover (403). Several spray heads (404) are provided on the right side of the annular cover (403). The outer surface of the annular cover (403) is movably fitted with a protective cover (405). A drive tooth (406) is fixedly installed on the left outer surface of the annular cover (403). A stabilizing plate (407) is fixedly installed on the bottom outer wall of the protective cover (405). A motor (408) is fixedly installed on the outer surface of the constant pressure pipe (402), and a rotating tooth (409) is fixedly installed at the output end of the motor (408).

4. A pressurized storage tank for a liquid carbon dioxide fire extinguishing system according to claim 2, characterized in that: The outer surface of the base plate (204) is provided with a plurality of air vents, and the plurality of air vents are arranged in a circular array on the base plate (204).

5. A pressurized storage tank for a liquid carbon dioxide fire extinguishing system according to claim 3, characterized in that: The outer surface of the rotating tooth (409) meshes with the outer surface of the driving tooth (406).

6. A pressurized storage tank for a liquid carbon dioxide fire extinguishing system according to claim 1, characterized in that: The air outlet pipe (3) is internally connected to a tightening valve.

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