Drainage combustion control device and method for pressurized hazardous chemical substance tank

Abstract

According to the drainage combustion control device and method for the pressurized hazardous chemical substance tank, a drainage unit and a torch unit are adopted to be matched with a gas-phase discharging opening of a tank body, and a gas-phase medium is drained to the torch unit to be combusted; meanwhile, the purging unit is adopted to perform purging and inert protection on air in the drainage unit and the torch unit before drainage of the gas-phase medium so as to ensure the safety of drainage combustion of the gas-phase medium, and the replacement unit is matched with the liquid-phase discharge port of the tank body to replace the residual gas-phase medium in the tank body for drainage combustion, so that the safety of drainage combustion is ensured. The hazardous chemicals in the tank body can be combusted thoroughly, explosion is prevented, the safety of the tank body is improved, further, the liquid-phase vaporization unit is matched with the liquid-phase discharge port of the tank body, the drainage unit and the torch unit are connected with the liquefaction vaporization unit, the liquid-phase vaporization unit can directly drain a liquid-phase medium, the liquid-phase medium is vaporized into a gas-phase medium to be combusted, and the combustion efficiency of the liquid-phase medium is improved. The discharge combustion speed of a medium in the tank body is increased, the drainage combustion efficiency is improved, and safety and reliability of the tank body are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of emergency disposal of pressurized hazardous chemical tanks, and in particular to a drainage and combustion control device for pressurized hazardous chemical tanks. Background Art

[0002] During the storage and transportation of pressurized hazardous chemical tanks, such as liquefied petroleum gas (LPG) and liquefied natural gas (LNG) storage tanks, the tank pressure often gets out of control and the tank leaks due to fire, traffic accidents, etc., which may further cause explosions and cause serious loss of life and property. In the absence of conditions for tank inversion or lifting, draining and relieving the pressurized hazardous chemical tanks and transferring the medium in the tank to a safe area for active combustion are key technical and tactical measures for handling such accidents.

[0003] The existing drainage combustion scheme is usually handled by on-site personnel using fire hoses or rubber hoses to connect the pressurized hazardous chemical tanks and the torch head, and then igniting them manually. For example, a drainage tube ignition method disclosed in a Chinese patent application with announcement number CN104959592A uses a hose to connect the drainage tube and the oxygen pipeline valve nearest to the site, and then places a device containing metal chips on site, adds flammable liquid to the device, ignites the metal chips, and then opens the oxygen valve, suspends the drainage tube above the flame, and completes the drainage tube ignition.

[0004] However, the existing diversion combustion scheme has problems such as the mismatch between the diversion joint and the pressurized hazardous chemical tank unloading outlet, difficult pressure control, incomplete diversion, easy flashback of the torch, and high risk of ignition operation, which leads to insufficient diversion combustion and difficulty in ensuring on-site operating efficiency and safety.

[0005] Therefore, how to improve the operational efficiency of drainage and combustion of pressurized hazardous chemical tanks, while at the same time draining the medium in the tank thoroughly and ensuring reliable and safe on-site operations has become an urgent problem to be solved in this field. Summary of the invention

[0006] In view of the defects of the prior art, the purpose of the present invention is to provide a pressurized hazardous chemical tank drainage and combustion control device and method with high efficiency, reliability and safety, and complete drainage and combustion of the medium in the tank.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a pressure-controlled hazardous chemical tank drainage and combustion control device, which is used to cooperate with the tank body of the pressure-controlled hazardous chemical tank, and includes a liquid phase vaporization unit, a purge unit, a displacement unit, a drainage unit, a flare unit and an electrical control unit.

[0008] The tank body is provided with a gas phase discharge port and a liquid phase discharge port, the liquid phase discharge port is connected to the liquid phase vaporization unit or the replacement unit, the liquid phase vaporization unit is configured to vaporize the liquid phase medium in the tank body, and the replacement unit is configured to replace the gas phase medium in the tank body from the gas phase discharge port.

[0009] The head end of the drainage unit is connected to the liquid phase vaporization unit or the gas phase outlet, and the tail end is connected to the torch unit, and is configured to drain the gas phase medium output from the liquid phase vaporization unit or the gas phase outlet to the torch unit, and the torch unit is configured to ignite the gas phase medium.

[0010] The purge unit is connected to the drainage unit and is arranged at the head end of the drainage unit, and is configured to purge and inertly protect the air in the drainage unit and the flare unit.

[0011] The electrical control unit is configured to control the working states of the liquid-phase vaporization unit, the purge unit, the displacement unit, the drainage unit and the flare unit.

[0012] Furthermore, the drainage unit comprises a drainage tube, and drainage quick connectors are respectively provided at both ends of the drainage tube.

[0013] Furthermore, the purge unit includes a purge air duct, one end of which is connected to the purge gas bottle through a purge pressure reducing valve, and the other end is connected to the drainage butt joint through a purge solenoid valve, one end of the drainage butt joint is connected to the gas phase discharge port or the liquid phase vaporization unit through an electric stop valve, and the other end is provided with a purge quick connector for cooperating with the drainage unit.

[0014] Furthermore, the liquid phase vaporization unit comprises a heat exchanger, and both ends of the heat exchanger are respectively provided with a liquid phase vaporization solenoid valve and a liquid phase vaporization quick connector for cooperating with the liquid phase discharge port and the purge unit.

[0015] Furthermore, the replacement unit comprises a replacement air duct, one end of which is connected to the replacement gas cylinder via a replacement pressure reducing valve, and the other end of which is connected to the liquid phase discharge port via a replacement solenoid valve.

[0016] Furthermore, the flare unit includes a flare barrel, a flare head is provided at one end of the flare barrel, a flare quick connector for cooperating with the drainage unit is provided at the other end, an explosion-proof solenoid valve and a flame arrester are also provided, and the flare barrel is connected to a height adjustment support device.

[0017] Furthermore, the height adjustment support device comprises a telescopic tripod, one end of the telescopic tripod is connected to the torch tube, and the other end is hinged to a support foot, and a ground drill hole is formed on the support foot.

[0018] Furthermore, the electrical control unit is configured to control the interlocking of the working states of the purge unit and the flare unit.

[0019] In order to achieve the above-mentioned purpose, the present invention provides a method for drainage and combustion control of pressurized hazardous chemical tanks, based on the device for drainage and combustion control of pressurized hazardous chemical tanks described in the claims, and the drainage and combustion control method includes gaseous medium drainage and combustion control:

[0020] The head end of the drainage unit is connected to the gas phase discharge port of the tank body, the tail end is connected to the flare unit, the purge unit is connected to the drainage unit and arranged at the head end of the drainage unit.

[0021] The electrical control unit controls the purge unit to purge the air in the drainage unit and the flare unit. After the purge is completed, the gas phase medium in the gas phase outlet is controlled to enter the drainage unit, and the gas phase medium is drained to the flare unit for combustion.

[0022] Then the replacement unit is connected to the liquid phase outlet of the tank body, and the electrical control unit controls the replacement unit to replace the residual gas phase medium in the tank body from the gas phase outlet.

[0023] The residual gaseous medium is again guided to the flare unit through the guide unit for combustion.

[0024] Furthermore, the drainage and combustion control method further comprises drainage and combustion control of a liquid medium:

[0025] Connect the liquid phase vaporization unit to the liquid phase outlet of the tank, then connect the head end of the drainage unit to the liquid phase vaporization unit, and the tail end to the flare unit. At the same time, connect the purge unit to the drainage unit and set it at the head end of the drainage unit.

[0026] The electrical control unit controls the purge unit to purge the air in the drainage unit and the flare unit. After the purge is completed, the liquid vaporization unit is controlled to vaporize the liquid medium in the tank body, so that the vaporized gaseous medium enters the drainage unit, and the gaseous medium is drained to the flare unit for combustion to balance the tank pressure and ensure the safety of the tank body.

[0027] The device and method for diversion and combustion control of pressurized hazardous chemicals tanks provided by the present invention adopt a diversion unit and a flare unit to cooperate with the gas phase discharge port of the tank body to divert the gas phase medium to the flare unit for combustion. At the same time, a purge unit is used to purge and inertly protect the air in the diversion unit and the flare unit before diverting the gas phase medium, so as to ensure the safety of the diversion and combustion of the gas phase medium.

[0028] In addition, a displacement unit is used in conjunction with the liquid phase discharge port of the tank body to displace the residual gas phase medium in the tank body for drainage combustion, so that the hazardous chemicals in the tank body can be burned completely, preventing the explosion of residual hazardous chemicals and improving the safety of the tank body.

[0029] Furthermore, the present invention also adopts a liquid phase vaporization unit to cooperate with the liquid phase discharge port of the tank body. At the same time, the drainage unit and the torch unit are connected to the liquefied vaporization unit, so that the liquid phase vaporization unit can directly drain the liquid phase medium and vaporize it into a gas phase medium for combustion, so as to accelerate the discharge and combustion speed of the medium in the tank body, improve the drainage combustion efficiency, and ensure the safety and reliability of the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] Figure 1 A schematic diagram of the overall structure of the pressurized hazardous chemicals tank drainage and combustion control device provided by the present invention;

[0032] Figure 2 It is a structural schematic diagram of the drainage unit in the present invention;

[0033] Figure 3 It is a structural schematic diagram of the flare unit in the present invention;

[0034] Figure 4 It is a structural schematic diagram of the purge unit in the present invention;

[0035] Figure 5 Schematic diagram of the structure of the replacement unit in the present invention;

[0036] Figure 6 It is a structural schematic diagram of the liquid phase vaporization unit in the present invention;

[0037] Figure 7 It is a schematic diagram of the structure of the electrical control unit in the present invention.

[0038] Reference numerals:

[0039] 100. Tank body; 110. Gas phase discharge port; 120. Purge unit;

[0040] 200. Liquid phase vaporization unit; 210. Heat exchanger; 211. Liquid phase drainage pipe; 220. Liquid phase vaporization solenoid valve; 230. Liquid phase vaporization quick connector;

[0041] 300. Purge unit; 310. Purge air pipe; 320. Purge pressure reducing valve; 330. Purge gas bottle; 340. Purge solenoid valve; 350. Drainage butt pipe; 360. Electric stop valve; 370. Purge quick connector;

[0042] 400. Replacement unit; 410. Replacement airway; 420. Replacement pressure reducing valve; 430. Replacement gas cylinder; 440. Replacement solenoid valve;

[0043] 500. drainage unit; 510. head end; 520. tail end; 530. drainage tube; 540. drainage quick connector;

[0044] 600. Torch unit; 610. Torch barrel; 611. Torch quick connector; 620. Torch head; 630. High-voltage igniter; 640. Explosion-proof solenoid valve; 650. Flame arrester; 660. Height adjustment support device; 661. Telescopic tripod; 662. Support foot; 663. Ground drill hole; 664. Ground drill;

[0045] 700. Electrical control unit; 710. Electrical control box; 720. Cables. DETAILED DESCRIPTION

[0046] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0047] Combination Figure 1 , which shows an example of the drainage and combustion control device for pressurized hazardous chemicals tanks provided by the present invention.

[0048] As can be seen from the figure, the pressurized hazardous chemicals tank diversion and combustion control device of this example is used to cooperate with the tank body 100 of the pressurized hazardous chemicals tank, and mainly includes a liquid phase vaporization unit 200, a purge unit 300, a replacement unit 400, a diversion unit 500, a flare unit 600 and an electrical control unit 700.

[0049] Furthermore, a gas phase discharge port 110 and a liquid phase discharge port 120 are provided on the tank body 100. The liquid phase discharge port 120 can be connected to the liquid phase vaporization unit 200 or the replacement unit 400, so that the liquid phase vaporization unit 200 vaporizes the liquid phase medium in the tank body 100 into a gas phase medium, and the replacement unit 400 can replace the gas phase medium in the tank body 100 from the gas phase discharge port 110, so as to facilitate the full discharge and combustion of hazardous chemicals in the tank body.

[0050] The head end 510 of the drainage unit 500 is connected to the liquid-phase vaporization unit 200 or the gas-phase outlet 110, and the tail end 520 is connected to the flare unit 600. It is configured to drain the gaseous medium output from the liquid-phase vaporization unit 200 or the gas-phase outlet 110 to the flare unit 600. The flare unit 500 is configured to ignite the gas-phase medium to balance the tank pressure and ensure the safety of the tank 100.

[0051] The purge unit 300 is connected to the drainage unit 500 and is disposed at the head end of the drainage unit 500 , and is configured to purge and inertly protect the air in the drainage unit 500 and the flare unit 600 to ensure the safety of the drainage combustion of the gas phase medium.

[0052] The electrical control unit 700 is configured to control the working states of the liquid phase vaporization unit 200 , the purge unit 300 , the replacement unit 400 , the drainage unit 500 and the flare unit 600 , so as to quickly control the drainage and combustion of hazardous chemicals in the tank body 100 , and ensure the safety and reliability of the tank body 100 .

[0053] Among them, combined Figure 2 The drainage unit 500 includes a drainage pipe 530, and the head end 510 and the tail end 520 of the drainage pipe 530 are respectively provided with drainage quick connectors 540, so that the drainage unit 500 can be quickly connected and matched with the flare unit 600 and the liquid phase vaporization unit 200 or the gas phase discharge port 110 through the drainage quick connector 540, so that the gas phase medium in the tank body 100 can be quickly discharged and burned.

[0054] Preferably, the drainage tube 530 is configured as a flexible hose, so that the drainage tube 530 can be easily stored in a transport vehicle of the tank body 100 or in an emergency rescue vehicle. In an emergency, it can be quickly unfolded and connected and cooperated with the torch unit 600 and the liquid phase vaporization unit 200 or the gas phase discharge port 110 in a flexible state, thereby improving the working efficiency of the drainage and combustion control device.

[0055] Furthermore, the drainage unit 500 is arranged downwind of the tank body 100, and the tail end 520 is connected to the flare unit 600, so that the gas phase medium in the tank body 100 can be drained to a safe downwind location through the drainage unit 500 and burned through the flare unit 600, reducing the risk of explosion and fire.

[0056] Combination Figure 3 In coordination therewith, the flare unit 600 includes a flare barrel 610, a flare head 620 is provided at one end of the flare barrel 610, and a flare quick connector 611 for cooperating with the diversion unit 500 is provided at the other end, so that the flare quick connector 611 can be connected to the diversion quick connector 540 at the tail end 520 of the diversion unit 500, so as to stably connect the flare unit 600 and the diversion unit 500, so that the gaseous medium diverted in the diversion unit 500 is transported to the flare head 620 through the flare barrel 610. At the same time, a high-pressure igniter 630 is provided on the flare barrel 610, and the high-pressure igniter 630 can ignite the flare head 620, thereby igniting the gaseous medium, so that the gaseous medium is fully burned in the air.

[0057] Furthermore, an explosion-proof solenoid valve 640 and a flame arrester 650 are provided at the end of the flare tube 610 that cooperates with the drainage unit 500, so that the explosion-proof solenoid valve 640 can control the flow of the gaseous medium output from the drainage unit 500 into the flare tube 610, thereby ensuring the stable flow of the gaseous medium. The flame arrester 650 can prevent the flame of the burning gaseous medium from spreading, and prevent the external flame from backfiring to the flare tube 610, or even causing an explosion in the tank, thereby ensuring the safe and stable operation of the drainage and combustion control device.

[0058] In order to adjust the height of the flare barrel 610 and ensure the stable coordination between the flare unit 600 and the drainage unit 500, the flare barrel 610 is connected to a height adjustment support device 660. The height adjustment support device 660 includes a telescopic tripod 661 and a supporting foot 662. One end of the telescopic tripod 661 is connected to the flare barrel 610, and the other end is hinged to the supporting foot 662, so that the telescopic tripod 661 can cooperate with the supporting foot 662 to adapt to different terrains and ensure the stable placement of the flare barrel 610.

[0059] Furthermore, the telescopic tripod 661 is preferably composed of two telescopic arms which are nested together. The telescopic arms are provided with pin holes. The telescopic arms can adjust the length of the telescopic tripod 661 through the pin holes to adjust the height of the flare tube 610. A ground drill hole 663 is formed on the supporting leg 662. The flare tube 610 can be fixed to the ground by passing a ground drill hole 664 through the ground drill hole 663, thereby ensuring that the flare unit 600 will not topple over due to external disturbances.

[0060] The drainage unit 500 and the torch unit 600 thus constructed can cooperate with the gas phase discharge port 110 of the tank body 100 , or cooperate with the liquid phase vaporization unit 200 connected to the liquid phase discharge port 120 , to guide and burn the gas phase medium in the tank body 100 .

[0061] Combination Figure 1 In order to ensure the safety of the gas-phase medium diversion combustion and prevent the gas-phase medium from exploding during the diversion process, the purge unit 300 is connected to the diversion unit 500 and is arranged at the head end 510 of the diversion unit 500, so that the purge unit 300 can purge and inertly protect the air in the diversion unit 500 and the flare unit 600 to prevent the gas-phase medium from burning and exploding during the diversion process.

[0062] Combination Figure 4 Specifically, the purge unit 300 includes a purge air duct 310, one end of which is connected to a purge gas bottle 330 via a purge pressure reducing valve 320, and the other end is connected to a drainage docking pipe 350 via a purge solenoid valve 340. One end of the drainage docking pipe 350 is connected to the gas phase discharge port 110 or the liquid phase vaporization unit 200 of the tank body 100 via an electric stop valve 360, and the other end is provided with a purge quick connector 370 for cooperating with the drainage quick connector 540 of the drainage unit 500, so that the purge unit 300 is respectively connected to the gas phase discharge port 110 or the liquid phase vaporization unit 200 and the drainage unit 500.

[0063] Therefore, the gas phase discharge port 110 or the liquid phase vaporization unit 200 is connected to the drainage unit 500 through the drainage docking pipe 350 of the purge unit 300 and the electric stop valve 360, so that the electric stop valve 360 ​​can control the connection between the gas phase discharge port 110 or the liquid phase vaporization unit 200 and the drainage unit 500, so that the purge unit 300 can purge and inertly protect the air in the drainage unit 500 and the flare unit 600, and then transmit the gas phase medium output from the gas phase discharge port 110 or the liquid phase vaporization unit 200 to the drainage unit 500 for subsequent drainage combustion, so as to ensure the safety of the gas phase medium drainage process.

[0064] As an example, after the electric stop valve 360 ​​is closed, the gas phase discharge port 110 or the liquid phase vaporization unit 200 is no longer connected to the drainage unit 500. At this time, the gas in the purge gas bottle 330 can enter the purge air duct 310 after being reduced in pressure through the purge pressure reducing valve 320, and the purge solenoid valve 340 is opened. The purge solenoid valve 340 controls the gas flow rate transmitted from the purge air duct 310 to the drainage docking tube 350, so that the gas in the purge gas bottle 330 can stably flow through the purge air duct 310 and the drainage docking tube 350, and then enter the drainage unit 500, and finally flow out from the flare unit 600, thereby purging the air in the drainage unit 500 and the flare unit 600.

[0065] Here, the gas in the purge gas cylinder 330 is preferably composed of nitrogen. In some embodiments, it can also be composed of other inert gases to achieve inert protection of the drainage unit 500 and the flare unit 600, ensure that the hazardous gas does not come into contact with the combustible gas during the drainage process, causing combustion and explosion, and improve the safety of the drainage.

[0066] Furthermore, after completing the air purge in the drainage unit 500 and the flare unit 600, the purge solenoid valve 340 is closed and the electric stop valve 360 ​​is opened at the same time, so that the gas phase discharge port 110 or the liquid phase vaporization unit 200 is connected to the drainage unit 500, and the flow rate of the gas phase medium output from the gas phase discharge port 110 or the liquid phase vaporization unit 200 is controlled, so that the gas phase medium output from the gas phase discharge port 110 or the liquid phase vaporization unit 200 can stably enter the drainage unit 500 through the drainage docking pipe 350, and be drained to the flare unit 600 for combustion to balance the pressure of the tank body 100.

[0067] When the drainage unit 500 cooperates with the gas phase discharge port 110 to directly drain and burn the gas phase medium output from the gas phase discharge port 110, so that the tank body 100 is restored to the external pressure equilibrium state, there is still some residual gas phase medium in the tank body 100 that has not been discharged. In order to ensure the safety of the tank body 100, the replacement unit 400 is connected to the liquid phase discharge port 120 of the tank body 100, so that the residual gas phase medium in the tank body 100 can be replaced with the gas of the replacement unit 400, and discharged from the gas phase discharge port 110, and enter the drainage unit 500 for thorough drainage and combustion.

[0068] Combination Figure 5 Specifically, the replacement unit 400 is similar to the purge unit 300, and includes a replacement air duct 410. One end of the replacement air duct 410 is connected to the replacement gas cylinder 430 through the replacement pressure reducing valve 420, and the other end is connected to the liquid phase discharge port 120 through the replacement solenoid valve 440, so that the gas in the replacement gas cylinder 430 enters the replacement air duct 410 after being reduced in pressure by the replacement pressure reducing valve 420. The replacement solenoid valve 440 can control the gas flow rate of the replacement air duct 410 entering the liquid phase discharge port 120, so that the gas in the replacement gas cylinder 430 flows through the replacement air duct 410 and the liquid phase discharge port 120 stably into the tank body 100, and squeezes the residual gas phase medium in the tank body 100, discharges the residual gas phase medium from the gas phase discharge port 110, and re-enters the drainage unit 500 and the torch unit 600, and burns thoroughly, thereby ensuring the safety of the tank body 100.

[0069] Here, the gas in the replacement gas cylinder 430 is preferably composed of nitrogen. In some embodiments, it can also be composed of other inert gases to ensure that the gas in the replacement gas cylinder 430 will not chemically react with hazardous chemicals in the tank body 100 to cause an explosion.

[0070] Furthermore, after all the gaseous medium in the tank body 100 is burned, the purge unit 300 will purge the drainage unit 500 and the torch unit 600 again to clean up the residual gaseous medium in the drainage unit 500 and the torch unit 600, thereby ensuring the overall reliability and safety of the drainage and combustion control device.

[0071] When the drainage unit 500 cooperates with the liquid phase vaporization unit 200, the liquid phase vaporization unit 200 can drain the liquid phase medium in the tank body 100. Since the liquid phase medium is easy to burn and explode, the liquid phase vaporization unit 200 will vaporize the liquefied medium into a gas phase medium to ensure the safety of drainage and at the same time increase the discharge and combustion speed of hazardous chemicals in the tank body 100.

[0072] Combination Figure 6Specifically, the liquid phase vaporization unit 200 includes a heat exchanger 210, in which a liquid phase drainage pipe 211 is provided, and liquid phase vaporization solenoid valve 220 and liquid phase vaporization quick connector 230 are respectively provided at both ends of the liquid phase drainage pipe 211, so that one end of the liquid phase drainage pipe 211 of the heat exchanger 210 is connected to the liquid phase discharge port 120 through the liquid phase vaporization solenoid valve 220 and the liquid phase vaporization quick connector 230, and the other end is also coordinated with the drainage unit 500 through the liquid phase vaporization solenoid valve 220 and the liquid phase vaporization quick connector 230.

[0073] Therefore, the liquid phase vaporization solenoid valve 220 controls the flow rate of the liquid phase medium output from the liquid phase discharge port 120, so that the liquid phase medium can stably flow to the liquid phase drainage pipe 211 and enter the heat exchanger 210. The heat exchanger 210 heats the liquid phase medium to vaporize it into a gas phase medium, so that the gas phase medium can stably enter the drainage unit 500 from the other end of the liquid phase drainage pipe 211 for drainage combustion, thereby reducing the explosion risk of drainage combustion of the liquid phase medium.

[0074] Similarly, in order to ensure the safety of the gaseous medium drainage combustion formed by the vaporization of the liquid medium, the purge unit 300 can also cooperate with the liquid vaporization unit 200, respectively connecting the liquid drainage pipe 211 and the drainage unit 500, and after purging and inert protection of the air in the drainage unit 500 and the flare unit 600, the gaseous medium vaporized and output by the liquid vaporization unit 200 is transmitted to the drainage unit 500 for subsequent drainage combustion, so as to ensure the safety of the gaseous medium drainage process.

[0075] Furthermore, when the liquid medium in the tank body 100 is vaporized into a gaseous medium and then diverted for combustion, the heat generated by the combustion of the gaseous medium can act on the vaporization of the liquid medium, so that the residual liquid medium in the tank body 100 can continue to vaporize into a gaseous medium and participate in the combustion reaction together with the gaseous medium that is already burning. Therefore, there is no need to replace the residual liquid medium in the tank body 100, thereby increasing the emission and combustion speed of hazardous chemicals in the tank body 100.

[0076] The liquid-phase vaporization unit 200, the purge unit 300, the replacement unit 400, the diversion unit 500 and the torch unit 600 thus constructed can cooperate with each other. Before diversion, the air in the diversion combustion path is first purged to ensure the safety of diversion, and to realize the diversion combustion of the gaseous medium in the tank body 100, and to replace the residual gaseous medium for full and thorough combustion. The liquid-phase medium in the tank body 100 can also be vaporized first and then diverted and burned to increase the emission combustion speed, thereby improving the safety and reliability of the tank body 100.

[0077] Combination Figure 7In order to control the working state of the drainage and combustion control device and improve the drainage and combustion control efficiency, the electrical control unit 700 includes an electrical control box 710, and the electrical control box 710 is provided with switches respectively connected to the liquid phase vaporization unit 200, the purge unit 300, the replacement unit 400, the drainage unit 500 and the torch unit 600 to control the working state of each unit respectively, so that each unit can cooperate with each other to realize the drainage combustion of the hazardous chemicals in the tank body 100.

[0078] Here, the electric control box 710 can be connected to each unit by wire through the cable 720 to ensure the connection stability, and can also be connected wirelessly to remotely control the working status of each unit to ensure the safety of the operator.

[0079] Furthermore, the electrical control unit 700 is configured to control the interlocking of the working states of the purge unit 300 and the flare unit 600, so that when the purge unit 300 purges the drainage unit 500 and the flare unit 600, the working state of the flare unit 600 is locked and cannot be ignited. Correspondingly, when the flare unit 600 is ignited, the working state of the purge unit 300 is locked and cannot be purged, so as to ensure the working safety of the purge unit 300 and prevent the gas from burning and exploding during the purge process.

[0080] Thus, the drainage and combustion control device for pressurized hazardous chemicals tanks provided by the present invention is formed.

[0081] The present invention also provides a method for drainage and combustion control of a pressurized hazardous chemical tank. The drainage and combustion control device for a pressurized hazardous chemical tank formed based on the above scheme includes: drainage and combustion control of a gaseous medium:

[0082] First, the drainage and combustion control device is connected and matched with the tank body 100 to be suitable for drainage and combustion control of gaseous media.

[0083] The front end 510 of the drainage unit 500 is connected to the gas phase outlet 110 of the tank body 100, and the rear end 520 is connected to the flare unit 600. The purge unit 300 is connected to the drainage unit 500, and is arranged at the front end 510 of the drainage unit 500 to cooperate with the gas phase outlet 110, so that after the purge unit 300 purges the drainage unit 500 and the flare unit 600, the gas phase outlet 110 can be diverted and burned through the drainage unit 500 and the flare unit 600.

[0084] Specifically, the drainage docking pipe 350 of the purge unit 300 is connected to the gas phase discharge port 110 of the tank body 100 through the electric stop valve 360, the drainage quick connector 540 at one end of the drainage unit 500 is quickly connected to the purge quick connector 370 at the end of the drainage docking pipe 350, and the drainage docking pipe 350 at the other end is quickly connected to the flare quick connector 611 at the end of the flare tube 610 in the flare unit 600.

[0085] At that time, the electrical control unit 600 controls the purge unit 300 to purge the air in the drainage unit 500 and the torch unit 600 to ensure the drainage safety of the gas phase medium in the gas phase discharge port 110 .

[0086] The electrical control unit 600 closes the electric stop valve 360, so that the gas phase discharge port 110 is no longer connected to the drainage unit 500. At this time, the gas in the purge gas bottle 330 enters the purge air duct 310 after being reduced in pressure by the purge pressure reducing valve 320. The electrical control unit 600 opens the purge solenoid valve 340, so that the gas in the purge gas bottle 330 can flow stably through the purge air duct 310 and the drainage docking tube 350, and then enter the drainage unit 500, and finally flow out from the flare unit 600, thereby purging the air in the drainage unit 500 and the flare unit 600.

[0087] After the purging is completed, the electrical control unit 600 controls the gas phase medium in the gas phase discharge port 110 to enter the drainage unit 500, and guides the gas phase medium to the torch unit 600 for combustion.

[0088] The electrical control unit 600 closes the purge solenoid valve 340 and opens the electric stop valve 360 ​​at the same time, so that the gas phase outlet 110 is connected with the drainage unit 500, and controls the gas phase medium output from the gas phase outlet 110 to stably enter the drainage unit 500 through the drainage docking pipe 350 and be drained into the flare unit 600.

[0089] Next, the gaseous medium is transported to the flare head 620 through the flare tube 610 , and the electrical control unit 600 controls the high-voltage igniter 630 to ignite the flare head 620 , thereby igniting the gaseous medium so that the gaseous medium is fully burned in the air to balance the pressure of the tank body 100 .

[0090] The replacement unit 400 is then connected to the liquid phase outlet 120 of the tank body 100 , and the electrical control unit 700 controls the replacement unit 400 to replace the residual gas phase medium in the tank body 100 from the gas phase outlet 120 to completely burn the gas phase medium.

[0091] The replacement air duct 410 of the replacement unit 400 is connected to the liquid phase discharge port 120 through the replacement solenoid valve 440. The electrical control unit 700 controls the gas in the replacement gas cylinder 430 to enter the replacement air duct 410 after being reduced in pressure through the replacement pressure reducing valve 420, and opens the replacement solenoid valve 440, so that the gas in the replacement gas cylinder 430 flows through the replacement air duct 410 and the liquid phase discharge port 120 to stably enter the interior of the tank body 100, and squeeze the residual gas phase medium inside the tank body 100, and discharge the residual gas phase medium from the gas phase discharge port 110.

[0092] As a result, the residual gaseous medium re-enters the drainage unit 500 and the flare unit 600 and is completely burned, thereby ensuring the safety of the tank body 100 .

[0093] Finally, after all the gaseous medium in the tank body 100 is burned, the electrical control unit 700 controls the purge unit 300 again to purge the drainage unit 500 and the torch unit 600, and purges the residual gaseous medium in the drainage unit 500 and the torch unit 600 to ensure the overall reliability and safety of the drainage and combustion control device.

[0094] Furthermore, the drainage and combustion control method also includes liquid medium drainage and combustion control:

[0095] First, the drainage and combustion control device is connected and matched with the tank body 100 to be suitable for drainage and combustion control of liquid medium.

[0096] The liquid phase vaporization unit 200 is connected to the liquid phase discharge port 120 of the tank body 100, and then the head end 510 of the drainage unit 500 is connected to the liquid phase vaporization unit 200, and the tail end 520 is connected to the flare unit 600. At the same time, the purge unit 300 is connected to the drainage unit 500, and is arranged at the head end 510 of the drainage unit 500 to cooperate with the liquid phase discharge port 120, so that after the purge unit 300 purges the drainage unit 500 and the flare unit 600, the liquid phase discharge port 120 can vaporize the liquid phase medium into a gas phase medium, and conduct drainage combustion through the drainage unit 500 and the flare unit 600.

[0097] Specifically, the liquid phase drainage pipe 211 of the heat exchanger 210 in the liquid phase vaporization unit 200 is connected to the liquid phase discharge port 120 through the liquid phase vaporization solenoid valve 220 and the liquid phase vaporization quick connector 230, and the drainage docking pipe 350 of the purge unit 300 is connected to the liquid phase vaporization unit 200 through the electric stop valve 360, the drainage quick connector 540 at one end of the drainage unit 500 is quickly connected to the purge quick connector 370 at the end of the drainage docking pipe 350, and the drainage docking pipe 350 at the other end is quickly connected to the torch quick connector 611 at the end of the flare tube 610 in the flare unit 600.

[0098] At that time, the electrical control unit 700 controls the purge unit 300 to purge the air in the drainage unit 500 and the torch unit 600 to ensure the drainage safety of the gas phase medium vaporized by the liquid phase vaporization unit 200 .

[0099] The electrical control unit 600 closes the electric stop valve 360, so that the liquid phase vaporization unit 200 is no longer connected to the drainage unit 500. At this time, the gas in the purge gas bottle 330 enters the purge air duct 310 after being reduced in pressure by the purge pressure reducing valve 320. The electrical control unit 600 opens the purge solenoid valve 340, so that the gas in the purge gas bottle 330 can flow stably through the purge air duct 310 and the drainage docking tube 350, and then enter the drainage unit 500, and finally flow out from the flare unit 600, thereby purging the air in the drainage unit 500 and the flare unit 600.

[0100] After the purging is completed, the electrical control unit 600 controls the liquid phase vaporization unit 200 to vaporize the liquid phase medium in the tank body 100 , so that the vaporized gas phase medium enters the drainage unit 500 .

[0101] The electrical control unit 600 opens the liquid phase vaporization solenoid valve 220 of the liquid phase vaporization unit 200, so that the liquid phase medium flows stably from the liquid phase discharge port 120 to the liquid phase drainage pipe 211 and enters the heat exchanger 210. The heat exchanger 210 heats the liquid phase medium to vaporize it into a gas phase medium, so that the gas phase medium enters the drainage unit 500 stably from the other end of the liquid phase drainage pipe 211 and flows to the flare unit 600, thereby reducing the explosion risk of the liquid phase medium drainage combustion.

[0102] Next, the vaporized gaseous medium is transported to the flare head 620 through the flare tube 610 , and the electrical control unit 600 controls the high-voltage igniter 630 to ignite the flare head 620 , thereby igniting the gaseous medium so that the gaseous medium is fully burned in the air to balance the pressure of the tank body 100 .

[0103] Furthermore, when the liquid medium in the tank body 100 is vaporized into a gaseous medium and then diverted for combustion, the heat generated by the combustion of the gaseous medium can act on the vaporization of the liquid medium, so that the residual liquid medium in the tank body 100 can continue to vaporize into a gaseous medium and participate in the combustion reaction together with the gaseous medium that is already burning. Therefore, there is no need to replace the residual liquid medium in the tank body 100, thereby increasing the emission and combustion speed of hazardous chemicals in the tank body 100.

[0104] The pressurized hazardous chemicals tank drainage and combustion control device and method provided by the present invention can cooperate with each other through the liquid phase vaporization unit 200, the purge unit 300, the replacement unit 400, the drainage unit 500, the torch unit 600 and the electrical control unit 700. Before drainage, the air in the drainage combustion path is first purged to ensure the drainage safety, and the drainage combustion of the gas phase medium in the tank body 100 is realized, and the residual gas phase medium is replaced for full and thorough combustion. The liquid phase medium in the tank body 100 can also be vaporized first and then drained and burned to increase the emission combustion speed, thereby improving the safety and reliability of the tank body 100.

[0105] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pressure-controlled hazardous chemical tank drainage and combustion control device, used to cooperate with the tank body of a pressure-controlled hazardous chemical tank, characterized in that: It includes a liquid phase vaporization unit, a purge unit, a displacement unit, a drainage unit, a flare unit and an electrical control unit. The tank body is provided with a gas phase discharge port and a liquid phase discharge port, the liquid phase discharge port is connected to the liquid phase vaporization unit or the replacement unit, the liquid phase vaporization unit is configured to vaporize the liquid phase medium in the tank body, the replacement unit is configured to replace the gas phase medium in the tank body from the gas phase discharge, the head end of the drainage unit is connected to the liquid phase vaporization unit or the gas phase discharge port, the tail end is connected to the flare unit, and is configured to drain the gas phase medium output from the liquid phase vaporization unit or the gas phase discharge port to the flare unit, and the flare unit is configured to ignite the gas phase medium, The purge unit is connected to the drainage unit and is arranged at the head end of the drainage unit, and is configured to purge and inertly protect the air in the drainage unit and the flare unit. The electrical control unit is configured to control the working states of the liquid-phase vaporization unit, the purge unit, the displacement unit, the drainage unit and the flare unit.

2. The device for controlling the flow and combustion of pressurized hazardous chemicals tanks according to claim 1 is characterized in that: The drainage unit comprises a drainage tube, and drainage quick connectors are respectively provided at both ends of the drainage tube.

3. The drainage and combustion control device for pressurized hazardous chemicals tanks according to claim 2 is characterized in that: The purge unit includes a purge air duct, one end of which is connected to a purge gas bottle via a purge pressure reducing valve, and the other end is connected to a drainage butt joint via a purge solenoid valve. One end of the drainage butt joint is connected to a gas phase discharge port or a liquid phase vaporization unit via an electric stop valve, and the other end is provided with a purge quick connector for cooperating with the drainage unit.

4. The drainage and combustion control device for pressurized hazardous chemicals tanks according to claim 3 is characterized in that: The liquid phase vaporization unit comprises a heat exchanger, and two ends of the heat exchanger are respectively provided with a liquid phase vaporization solenoid valve and a liquid phase vaporization quick connector for cooperating with the liquid phase discharge port and the purge unit.

5. The drainage and combustion control device for pressurized hazardous chemicals tanks according to claim 4 is characterized in that: The replacement unit comprises a replacement air duct, one end of which is connected to a replacement gas cylinder via a replacement pressure reducing valve, and the other end of which is connected to the liquid phase discharge port via a replacement solenoid valve.

6. The device for controlling the flow and combustion of pressurized hazardous chemicals tanks according to claim 2 is characterized in that: The flare unit comprises a flare barrel, one end of which is provided with a flare head, the other end of which is provided with a flare quick connector for cooperating with the drainage unit, an explosion-proof solenoid valve and a flame arrester, and the flare barrel is connected to a height adjustment support device.

7. The device for controlling the flow and combustion of pressurized hazardous chemicals tanks according to claim 6 is characterized in that: The height adjustment support device comprises a telescopic tripod, one end of which is connected to the torch tube, and the other end is hinged to a support foot, and a ground drill hole is formed on the support foot.

8. The drainage and combustion control device for pressurized hazardous chemicals tanks according to claim 1 is characterized in that: The electrical control unit is configured to control the interlocking of the working states of the purge unit and the flare unit.

9. A method for controlling combustion of pressurized hazardous chemicals tanks, characterized in that: Based on the drainage and combustion control device for pressurized hazardous chemicals tanks according to any one of claims 1 to 8, the drainage and combustion control method includes gaseous medium drainage and combustion control: The head end of the drainage unit is connected to the gas phase discharge port of the tank body, the tail end is connected to the flare unit, the purge unit is connected to the drainage unit and arranged at the head end of the drainage unit. The electrical control unit controls the purge unit to purge the air in the drainage unit and the flare unit. After the purge is completed, the gas phase medium in the gas phase outlet is controlled to enter the drainage unit, and the gas phase medium is drained to the flare unit for combustion. Then the replacement unit is connected to the liquid phase outlet of the tank body, and the electrical control unit controls the replacement unit to replace the residual gas phase medium in the tank body from the gas phase outlet. The residual gaseous medium is again guided to the flare unit through the guide unit for combustion.

10. The method for controlling combustion of pressurized hazardous chemicals tanks according to claim 9 is characterized in that: The drainage and combustion control method also includes liquid medium drainage and combustion control: Connect the liquid phase vaporization unit to the liquid phase outlet of the tank, then connect the head end of the drainage unit to the liquid phase vaporization unit, and the tail end to the flare unit. At the same time, connect the purge unit to the drainage unit and set it at the head end of the drainage unit. The electrical control unit controls the purge unit to purge the air in the drainage unit and the flare unit. After the purge is completed, the liquid phase vaporization unit is controlled to vaporize the liquid phase medium in the tank body, so that the vaporized gas phase medium enters the drainage unit, and the gas phase medium is drained to the flare unit for combustion.

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