Safe water injection system for remotely and rapidly controlling liquefied hydrocarbon storage tank

Abstract

The invention discloses a safe water injection system for remotely and rapidly controlling a liquefied hydrocarbon storage tank. The safe water injection system comprises a double-layer storage tank, a spraying heat dissipation system and a rapid water injection system. The double-layer storage tank is provided with a heat dissipation cavity and a storage cavity, the heat dissipation cavity is connected with the spraying heat dissipation system, and the storage cavity is connected with the rapid water injection system. The rapid water injection system comprises an integrated control device, a heat dissipation pool, a water storage pool, a water supply pipe A connected with a fire fighting water supply pipeline, a water supply pipe B connected with the water storage pool, a water injection pipe A and a water injection pipe B connected with the top and the bottom of the storage tank, a water injection pipe C connected with the spraying heat dissipation system, a water drainage pipe and a communicating pipe connected with the heat dissipation pool and the water storage pool. The integrated control device is used for controlling on-off states of the water supply pipes, the water injection pipes, the water drainage pipes and the communicating pipes so as to ensure that the water injection system is rapidly started in emergency, the temperature of the storage tank is reduced, and potential safety hazards are avoided. According to the system, the safety and the emergency response capability of the liquefied hydrocarbon storage tank can be remarkably improved, and accidents caused by too high temperature are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of safe storage of liquefied hydrocarbons, in particular to a safe water injection system for remote and rapid control of a liquefied hydrocarbon storage tank. Background Art

[0002] Liquefied hydrocarbon storage tanks are widely used in the chemical, petroleum and other industries, mainly for storing flammable and explosive gases such as liquefied petroleum gas and liquefied natural gas. Due to the high volatility and low-temperature storage characteristics of liquefied hydrocarbons, the temperature control of these tanks is particularly critical. The structure of traditional liquefied hydrocarbon storage tanks is mostly a single-layer design, that is, there is only one outer tank body, and the inner tank body storing liquefied hydrocarbons is directly exposed to the external environment. Although the single-layer structure can meet the storage needs to a certain extent, its stability is often poor and is easily affected by changes in the external environment (such as temperature fluctuations, mechanical collisions, etc.), which may cause safety hazards such as deformation and rupture of the tank, especially when natural disasters such as extreme weather or earthquakes occur. During the long-term operation of such single-layer tanks, as the evaporation gas of liquefied hydrocarbons in the tank increases, its temperature is easy to rise, resulting in increased pressure, which is very easy to break the safety threshold, and then cause serious accidents such as leakage and fire.

[0003] Traditional water injection systems for liquefied hydrocarbon storage tanks usually rely on manual operation or semi-automatic methods for water injection, which makes the system respond slowly in emergency situations. In the face of sudden high temperature and overpressure conditions, traditional emergency water injection methods often have shortcomings such as cumbersome operation, insensitive control, and poor real-time response, which may lead to delays in emergency treatment, thereby expanding the accident and affecting the safety of personnel, the environment, and the safety of the tank itself.

[0004] When faced with sudden temperature anomalies or pressure changes, operators are unable to adjust the water injection volume or make emergency interventions in a timely manner through remote equipment. This not only increases the difficulty of operation, but also greatly increases the risk of accidents. Especially in some hazardous chemical storage areas, where on-site operators and the environment are limited, traditional manual control methods do not have sufficient real-time and flexibility, making it difficult to effectively avoid accidents.

[0005] Therefore, in order to improve the safety, stability and emergency handling capabilities of liquefied hydrocarbon storage tanks, there is an urgent need for an emergency water injection system that can achieve remote rapid control, automated operation and has a high response speed. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a safe water injection system for liquefied hydrocarbon storage tanks with remote and rapid control, which can effectively reduce the temperature of the storage tank, avoid safety hazards, and respond quickly in emergency situations, promptly solve safety problems, and reduce accident risks.

[0007] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a safe water injection system for remote and rapid control of a liquefied hydrocarbon storage tank, comprising a double-layer storage tank, wherein the double-layer storage tank is provided with a heat dissipation cavity and a storage cavity arranged inside the heat dissipation cavity, and also comprising a spray heat dissipation system connected to the heat dissipation cavity and a rapid water injection system connected to the storage cavity.

[0008] The rapid water injection system includes an integrated control device, a heat sink, and a water storage tank. The rapid water injection system also includes: a water supply pipe A for connecting to a fire water supply line, a water supply pipe B for connecting to the water storage tank, a water injection pipe A for connecting to the top of the storage chamber, a water injection pipe B for connecting to the bottom of the storage chamber, a water injection pipe C for connecting to a spray heat dissipation system, a drainage pipe for connecting the spray heat dissipation system and the heat sink, and a connecting pipe for connecting the heat sink and the water storage tank.

[0009] The integrated control device is used to control the water supply switching state of water supply pipe A and water supply pipe B, and control the on-off state of water injection pipe A, water injection pipe B, water injection pipe C, drainage pipe and connecting pipe. The water injection pipe A, water injection pipe B, water injection pipe C and drainage pipe are kept on and off synchronously, and the on-off state of the connecting pipe and the drainage pipe is kept opposite.

[0010] In the above technical solution, in order to ensure rapid control of the on / off status of each pipeline and to ensure the response speed of the rapid water injection system, the following technical solution is provided.

[0011] The water injection pipe A is equipped with pressure transmitter A, stop valve A, check valve A, and pressure transmitter a in sequence along the water flow direction; the water injection pipe B is equipped with pressure transmitter B, stop valve B, check valve B, and pressure transmitter b in sequence along the water flow direction; the water injection pipe C is equipped with stop valve C and check valve C in sequence along the water flow direction; the drain pipe is equipped with stop valve D, and the connecting pipe is equipped with stop valve E.

[0012] In the above technical solution, in order to ensure that water supply pipe A and water supply pipe B can stably inject water into the double-layer storage tank and the spray cooling system, the following technical solution is provided.

[0013] The water injection pipe A, water injection pipe B, and water injection pipe C are all connected to the four-way valve, the water supply pipe A and water supply pipe B are connected to the three-way valve A, and the four-way valve is connected to the three-way valve A; the water supply pipe A and water supply pipe B are respectively equipped with a first stop valve and a second stop valve, and the water supply pipe B is equipped with a first booster pump.

[0014] On the basis of the above technical solution, in order for the integrated control device to be able to quickly control the on and off status of each water pipe, the following technical solution is provided.

[0015] The valve stems in the stop valve A, stop valve B, stop valve C, stop valve D, stop valve E, the first stop valve and the second stop valve all adopt reciprocating screws, and the top ends of the reciprocating screws are fixedly connected with worm gears.

[0016] The integrated control device includes a driving motor, a driving shaft, a transmission shaft A, and a transmission shaft B. A first bevel gear is fixedly connected to the output shaft of the driving motor, and a second bevel gear that is meshed with the first bevel gear is fixedly connected to the driving shaft. The driving shaft is connected to the transmission shaft A and the transmission shaft B through a ratchet mechanism A and a ratchet mechanism B, respectively. The ratchet mechanism A and the ratchet mechanism B are arranged in reverse. Two groups of worm gears A are fixedly connected to the transmission shaft A, and each group of worm gears B is respectively meshed with the worm gears matching the first stop valve and the second stop valve. Five groups of worm gears B are fixedly connected to the transmission shaft B, and each group of worm gears B is respectively matched with the worm gears matching the stop valve A, the stop valve B, the stop valve C, the stop valve D, and the stop valve E.

[0017] On the basis of the above technical solution, in order to ensure that the components in the integrated control device and the associated pipelines can be assembled in an integrated manner and to facilitate unified control of the switch status of each pipeline, the following technical solution is provided.

[0018] The integrated control device also includes an assembly shell, an assembly cover is fixedly installed on the top of the assembly shell, the water supply pipe A, water supply pipe B, water injection pipe A, water injection pipe B, water injection pipe C, drain pipe, and connecting pipe are all connected to the assembly shell, the four-way valve, three-way valve A, first stop valve, second stop valve, stop valve A, stop valve B, stop valve C, stop valve D, stop valve E, pressure transmitter A, check valve A, pressure transmitter a, pressure transmitter B, check valve B, and pressure transmitter b are all assembled in the assembly shell, the drive motor is fixedly installed in the assembly shell, and the drive shaft, transmission shaft A, and transmission shaft B are all rotatably installed in the assembly shell.

[0019] On the basis of the above technical solution, in order to ensure that the ratchet mechanism A and the ratchet mechanism B can effectively receive the power of the drive shaft and stably transmit it to the transmission shaft A and the transmission shaft B, and realize the diversion transmission of power, the following technical solution is provided.

[0020] The ratchet mechanism A and the ratchet mechanism B have the same structure and both include an inner ratchet, a pawl and a spring leaf. The inner ratchet is rotatably mounted in the assembly shell, the pawl is rotatably mounted on the outer edge of the end of the drive shaft and remains in mesh with the inner ratchet, and the spring leaf is mounted on the drive shaft and remains in contact with the pawl.

[0021] The inner ratchet in the ratchet mechanism A is fixedly connected to a driving bevel gear A, the transmission shaft A is fixedly connected to a driving bevel gear A that is meshed with the driving bevel gear A, the inner ratchet in the ratchet mechanism B is fixedly connected to a driving bevel gear B, and the transmission shaft B is fixedly connected to a driving bevel gear B that is meshed with the driving bevel gear B.

[0022] On the basis of the above technical solution, in order to ensure the structural stability of the double-layer storage tank and to ensure that the water supply pipe A, water supply pipe B and the spray cooling system can be stably connected to the double-layer storage tank, the following technical solution is provided.

[0023] The double-layer storage tank includes an outer tank body and an inner tank body, a heat dissipation cavity is formed between the outer tank body and the inner tank body, the inner side of the inner tank body is set as a storage cavity, the outer wall of the inner tank body is fixedly connected with evenly arranged heat dissipation ring sheets, the inner wall of the inner tank body is fixedly connected with a reinforcement ring, the top and bottom of the outer tank body are respectively provided with a water inlet interface and a drainage interface, the top and bottom of the inner tank body are respectively connected with an upper water injection interface and a lower water injection interface, the upper water injection interface and the lower water injection interface both extend to the outside of the outer tank body, the water injection pipe A is connected to the upper water injection interface, and the water injection pipe B is connected to the lower water injection interface.

[0024] On the basis of the above technical scheme, in order to ensure that the spray cooling system can be connected to the water inlet interface and the drainage interface and realize efficient heat dissipation of the inner tank body, the following technical scheme is provided.

[0025] The spray heat dissipation system includes a spray pipe, a water inlet pipe, a drain pipe, and a water tank. The spray pipe is fixedly installed on the top of the heat dissipation cavity. The downstream end of the water inlet pipe extends into the water inlet interface and is connected to the spray pipe. The downstream end of the water inlet pipe is connected to the water tank. The two ends of the drain pipe are respectively connected to the water tank and the drain interface. A radiator, a second booster pump, and a one-way valve D are sequentially installed on the water inlet pipe along the water flow direction.

[0026] On the basis of the above technical scheme, in order to ensure that the water injection pipe C and the drainage pipe can be connected to the spray cooling system, supply water and heat the spray cooling system, and discharge the cooled water directly into the cooling pool, the following technical scheme is provided.

[0027] The water inlet pipe is equipped with a three-way valve B arranged on the downstream side of the one-way valve D, and the water injection pipe C is connected to the three-way valve B; the drain pipe is equipped with a three-way valve C, and the drain pipe is connected to the three-way valve C; the top of the water tank is equipped with a water level control valve, and the drain pipe is connected to the water level control valve.

[0028] Beneficial effects of the present invention: 1. The double-layer tank structure is adopted, and a heat dissipation cavity is formed between the outer tank body and the inner tank body, which not only increases the overall structural strength of the tank, but also effectively improves the stability of the tank. The double-layer design can effectively prevent the single-layer tank from deforming or rupturing when subjected to external impact or environmental changes, thereby reducing the risk of liquefied hydrocarbon leakage and accidents. At the same time, the heat dissipation cavity between the outer tank body and the inner tank body can provide an additional heat dissipation channel for the inner tank body, and cooperate with the heat dissipation ring and the spray heat dissipation system to achieve efficient temperature control of the liquefied hydrocarbon in the tank. The spray pipe cools the inner tank body by evenly spraying cold water, thereby keeping the storage temperature of the liquefied hydrocarbon within a safe range and avoiding the dangers of overpressure, leakage or fire caused by temperature increase. The safety and stability of liquefied hydrocarbon storage are greatly improved.

[0029] 2. Through the setting of the rapid water injection system, the inner tank body can be quickly and comprehensively injected with water in an emergency. The upper water injection interface and the lower water injection interface are connected to the water injection pipe A and the water injection pipe B to ensure that the water injection can quickly cover the top and bottom of the inner tank body. The rapid water injection system can quickly intervene when the temperature of the liquefied hydrocarbon storage tank approaches the dangerous threshold and quickly reduce the temperature of the inner tank body, thereby effectively avoiding safety accidents caused by high temperature and reducing the risk of accidents spreading. Traditional water injection methods often have problems such as slow response and cumbersome operation. This solution ensures that the storage tank can obtain sufficient cooling in a very short time through efficient and synchronous water injection functions, thereby avoiding further escalation of dangerous situations.

[0030] 3. An integrated control device is used to uniformly manage various piping systems such as water injection pipes, water supply pipes, and drainage pipes. The control device can automatically adjust the water injection volume according to real-time data to ensure that the cooling system always works in the best condition. In an emergency, the integrated control device can respond quickly, automatically start the rapid water injection system, and perform emergency water injection operations. Since the control device can be remotely monitored and operated, the operator can remotely adjust the operating status of the water injection system without on-site intervention, which greatly improves the speed and accuracy of emergency response. This design ensures that when an emergency occurs, the tank can quickly take effective response measures to prevent the accident from expanding, and maximize the safety of personnel, the environment, and the integrity of the tank itself.

[0031] In summary, this solution significantly improves the safety, emergency response capability and intelligent management level of liquefied hydrocarbon storage tanks through the innovative design of double-layer tank structure, rapid water injection system and integrated control device. It can effectively reduce the temperature of the tank, avoid safety hazards, and respond quickly in emergency situations, solve safety problems in time, and reduce accident risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the matching combination of various components in the present invention; Figure 2It is a structural schematic diagram of a double-layer storage tank; Figure 3 It is a schematic diagram of the structure inside the double-layer storage tank; Figure 4 for Figure 3 A schematic diagram of the enlarged detail of part A; Figure 5 It is a structural schematic diagram of an integrated control device; Figure 6 It is a structural schematic diagram of the combination of each pipeline and the integrated control device; Figure 7 for Figure 6 Schematic diagram of the structure after removing the integrated control device; Figure 8 It is a structural schematic diagram of the reciprocating screw and the worm gear in the combined state; Fig. 9 It is a structural schematic diagram of an integrated control device; Fig.10 It is a structural schematic diagram of the matching combination of the driving shaft and the ratchet mechanism A and the ratchet mechanism B; Fig.11 for Fig.10 Schematic diagram of the structure in disassembled state.

[0033] In the figure: 1 double-layer storage tank, 11 heat dissipation cavity, 12 storage cavity, 13 outer tank body, 131 water inlet interface, 132 drainage interface, 133 outer support ring, 14 inner tank body, 141 heat dissipation ring sheet, 142 reinforcement ring, 143 upper water injection interface, 144 lower water injection interface, 145 inner support ring, 146 population, 147 discharge port, 151 connecting ring, 152 support frame, 21 spray pipe, 22 water inlet pipe, 221 heat dissipation , 222 second booster pump, 223 one-way valve D, 224 three-way valve B, 23 drainage pipe, 231 three-way valve C, 24 water tank, 241 water level control valve, 31 reciprocating screw, 311 worm gear, 32 drive motor, 321 first bevel gear, 33 drive shaft, 331 second bevel gear, 34 transmission shaft A, 341 worm A, 342 transmission bevel gear A, 35 transmission shaft B, 351 worm B, 352 transmission Moving bevel gear B, 3601 ratchet mechanism A, 3602 ratchet mechanism B, 361 inner ratchet, 3611 driving bevel gear A, 3612 driving bevel gear B, 362 ratchet, 363 reed, 371 assembly shell, 372 assembly cover, 41 water supply pipe A, 411 first stop valve, 42 water supply pipe B, 421 second stop valve, 422 first pressure pump, 43 water injection pipe A, 431 pressure transmitter A, 432 stop valve Check valve A, 433 one-way valve A, 434 pressure transmitter a, 44 water injection pipe B, 441 pressure transmitter B, 442 stop valve B, 443 one-way valve B, 444 pressure transmitter b, 45 water injection pipe C, 451 stop valve C, 452 one-way valve C, 46 drain pipe, 461 stop valve D, 47 connecting pipe, 471 stop valve E, 481 four-way valve, 482 three-way valve A, 51 heat sink, 52 water reservoir. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1 See also Figure 1 A safe water injection system for remote and rapid control of a liquefied hydrocarbon storage tank comprises a double-layer storage tank 1, in which a heat dissipation cavity 11 and a storage cavity 12 arranged inside the heat dissipation cavity 11 are provided, and further comprises a spray heat dissipation system connected to the heat dissipation cavity 11 and a rapid water injection system connected to the storage cavity 12.

[0036] The rapid water injection system includes an integrated control device, a heat dissipation pool 51, and a water storage tank 52. The rapid water injection system also includes: a water supply pipe A41 for connecting to a fire water supply pipeline, a water supply pipe B42 for connecting to the water storage tank 52, a water injection pipe A43 for connecting to the top of the storage chamber 12, a water injection pipe B44 for connecting to the bottom of the storage chamber 12, a water injection pipe C45 for connecting to a sprinkler heat dissipation system, a drainage pipe 46 for connecting the sprinkler heat dissipation system and the heat dissipation pool 51, and a connecting pipe 47 for connecting the heat dissipation pool 51 and the water storage tank 52.

[0037] The integrated control device is used to control the water supply switching status of the water supply pipe A41 and the water supply pipe B42, and to control the on and off status of the water injection pipe A43, the water injection pipe B44, the water injection pipe C45, the drainage pipe 46, and the connecting pipe 47. The water injection pipe A43, the water injection pipe B44, the water injection pipe C45, and the drainage pipe 46 maintain synchronous switching, and the on and off status of the connecting pipe 47 and the drainage pipe 46 remain opposite.

[0038] The setting of the double-layer storage tank 1 can ensure the structural strength and bearing pressure of the tank body, thereby ensuring the stable storage of liquefied hydrocarbons. The double-layer storage tank 1 can also form an inner storage chamber 12 and an outer heat dissipation chamber 11. The storage chamber 12 is used to store liquefied hydrocarbons, and the heat dissipation chamber 11 can perform continuous or periodic heat dissipation through a spray heat dissipation system to ensure that the storage temperature of the liquefied hydrocarbons is maintained at a safe threshold.

[0039] The water added in the spray cooling system circulates, sprays and cools the double-layer storage tank 1 in the cooling chamber 11, and then gathers at the bottom of the cooling chamber 11 for air cooling. After cooling, the water with lowered temperature is re-input into the double-layer storage tank 1 for circulating cooling.

[0040] The spray cooling system can be periodically switched on and off, or selectively switched on and off according to the internal temperature and pressure of the double-layer storage tank 1, so as to ensure that the double-layer storage tank 1 is maintained within a safe level during normal storage of liquefied hydrocarbons.

[0041] Under normal conditions, water supply pipe A41 is in a normally open state, while water supply pipe B42 is in a normally closed state, and the water reservoir 52 serves as a redundant water source for backup. Water injection pipe A43, water injection pipe B44, water injection pipe C45, and drainage pipe 46 are all in a normally closed state, so that the spray cooling system can operate independently.

[0042] When an emergency occurs, the rapid water injection system intervenes, and the water injection pipe A43, water injection pipe B44, water injection pipe C45, and drainage pipe 46 are opened, and the fire water supply pipeline supplies water to the water injection pipe A43, water injection pipe B44, and water injection pipe C45 through the water supply pipe A41 at the same time, and water is injected into the top and bottom of the storage chamber 12 through the water injection pipe A43 and water injection pipe B44 at the same time, so as to quickly reduce the temperature of the liquefied hydrocarbon therein and inhibit the volatilization of the liquefied hydrocarbon, so as to quickly block and control the further deterioration of the emergency. At the same time, the water injection pipe C45 directly injects water into the spray cooling system for spray cooling, and the water gathered at the bottom of the cooling chamber 11 is directly recovered to the cooling pool 51 through the drainage pipe 46 for cooling. In this way, the heat dissipation of the double-layer storage tank 1 in the inner and outer directions is synchronized to quickly reduce the temperature of the liquefied hydrocarbon and avoid serious safety accidents.

[0043] When the fire-fighting water supply pipeline is interrupted or the water pressure is insufficient, the water supply pipe B42 is switched through the integrated control device to close the water supply pipe A41 and open the water supply pipe B42. The backup water source stored in the water reservoir 52 is connected to the system for rapid water injection.

[0044] When the emergency is lifted, the water injection pipe A43, the water injection pipe B44, the water injection pipe C45, and the drainage pipe 46 are closed again through the integrated control device, and the connecting pipe 47 is opened. At this time, the water collected in the heat dissipation pool 51 can be injected into the water reservoir 52 through the connecting pipe 47 to replenish the water reservoir 52.

[0045] Example 2 See also Figure 1 , 6 -7. In order to ensure rapid control of the on / off status of each pipeline and to ensure the response speed of the rapid water injection system, the following technical solutions are provided.

[0046] The water injection pipe A43 is equipped with a pressure transmitter A431, a stop valve A432, a one-way valve A433 and a pressure transmitter a434 in sequence along the water flow direction; the water injection pipe B44 is equipped with a pressure transmitter B441, a stop valve B442, a one-way valve B443 and a pressure transmitter b444 in sequence along the water flow direction; the water injection pipe C45 is equipped with a stop valve C451 and a one-way valve C452 in sequence along the water flow direction; the drain pipe 46 is equipped with a stop valve D461; and the connecting pipe 47 is equipped with a stop valve E471.

[0047] Pressure transmitter A431 and pressure transmitter B441 are used to detect the water pressure at the water supply end, that is, the water pressure of the water supply pipe A41 or the water supply pipe B42, and pressure transmitter a434 and pressure transmitter b444 are used to detect the pressure of liquefied hydrocarbons on one side of the double-layer storage tank 1. When the water pressure is greater than the pressure of the liquefied hydrocarbons, the corresponding stop valve A432 and stop valve B442 are controlled to be in an open state to ensure stable water injection into the storage chamber 12 of the double-layer storage tank 1, and the one-way valve A433 and one-way valve B443 can prevent the liquefied hydrocarbons or volatile gases from flowing back along the water injection pipe A43 and the water injection pipe B44.

[0048] The stop valve C451, stop valve D461 and stop valve E471 can control the on / off status of the water injection pipe C45, the drainage pipe 46 and the connecting pipe 47, and the one-way valve C452 can limit the backflow of water in the spray cooling system into the water injection pipe C45.

[0049] In order to ensure that the water supply pipe A41 and the water supply pipe B42 can stably inject water into the double-layer storage tank 1 and the spray cooling system, the following technical solution is provided.

[0050] The water injection pipe A43, the water injection pipe B44 and the water injection pipe C45 are all connected to the four-way valve 481, the water supply pipe A41 and the water supply pipe B42 are connected to the three-way valve A482, and the four-way valve 481 is connected to the three-way valve A482; the water supply pipe A41 and the water supply pipe B42 are respectively equipped with a first stop valve 411 and a second stop valve 421, and the water supply pipe B42 is equipped with a first booster pump 422.

[0051] Through the connection combination of the three-way valve A482 and the four-way valve 481, the side-by-side arrangement of the water injection pipe A43, the water injection pipe B44 and the water injection pipe C45 can be achieved, the side-by-side arrangement of the water supply pipe A41 and the water supply pipe B42 can be achieved, and water can be supplied to each water injection pipe.

[0052] By setting the first stop valve 411 and the second stop valve 421, the on and off states of the water supply pipe A41 and the water supply pipe B42 can be controlled to realize the switching of the water supply pipe A41 and the water supply pipe B42. The first booster pump 422 can pressurize the water in the water reservoir 52 and pump it to the water supply pipe B42 to ensure that the water pressure of the water supply pipe B42 in the water supply state is greater than the pressure of the liquefied hydrocarbons in the double-layer storage tank 1.

[0053] Example 3 See also Figure 5-11 , an integrated control device can quickly control the on and off status of each water pipe, and the following technical solutions are provided for this.

[0054] The valve stems in the stop valve A432 , the stop valve B442 , the stop valve C451 , the stop valve D461 , the stop valve E471 , the first stop valve 411 , and the second stop valve 421 all adopt a reciprocating screw 31 , and a worm gear 311 is fixed to the top end of the reciprocating screw 31 .

[0055] The integrated control device includes a driving motor 32, a driving shaft 33, a transmission shaft A34, and a transmission shaft B35. A first bevel gear 321 is fixedly connected to the output shaft of the driving motor 32. A second bevel gear 331 that is meshed with the first bevel gear 321 is fixedly connected to the driving shaft 33. The driving shaft 33 is connected to the transmission shaft A34 and the transmission shaft B35 through a ratchet mechanism A3601 and a ratchet mechanism B3602, respectively. 02 maintains a reverse arrangement, two groups of worm gears A341 are fixedly connected to the transmission shaft A34, and each group of worm gears B351 is respectively matched and meshed with the worm wheel 311 matching the first stop valve 411 and the second stop valve 421, and five groups of worm gears B351 are fixedly connected to the transmission shaft B35, and each group of worm gears B351 is respectively matched and combined with the worm wheel 311 matching the stop valve A432, the stop valve B442, the stop valve C451, the stop valve D461, and the stop valve E471.

[0056] The driving motor 32 can drive the driving shaft 33 to operate stably through the combination of the first bevel gear 321 and the second bevel gear 331. The power of the driving shaft 33 can be transmitted to the transmission shaft A34 and the transmission shaft B35 through the ratchet mechanism A3601 and the ratchet mechanism B3602. Since the ratchet mechanism A3601 and the ratchet mechanism B3602 maintain a reverse layout, the transmission shaft A34 and the transmission shaft B35 can receive power in opposite directions. When the driving shaft 33 is driven by the driving motor 32 to rotate forward, the power can be transmitted to the transmission shaft A34 alone through the ratchet mechanism A3601. When the driving shaft 33 is reversed, the power can be transmitted to the transmission shaft B35 alone through the ratchet mechanism B3602.

[0057] When the transmission shaft A34 and the worm gear A341 installed thereon are in operation, the reciprocating screw 31 and the worm wheel 311 in the first stop valve 411 and the second stop valve 421 can be driven to operate stably, and then the reciprocating screw 31 drives the corresponding valve core to move up and down, thereby realizing the control of the switching state of the first stop valve 411 and the second stop valve 421. When the reciprocating screw 31 in the first stop valve 411 drives the corresponding valve core to rise and be in an open state, the reciprocating screw 31 in the second stop valve 421 drives the corresponding valve core to descend and be in a closed state, thereby realizing the switching of water supply to the water supply pipe A41 and the water supply pipe B42.

[0058] When the transmission shaft B35 and the worm gear B351 installed thereon are in operation, the reciprocating screw 31 and the worm wheel 311 in the stop valve A432, the stop valve B442, the stop valve C451, the stop valve D461 and the stop valve E471 can be driven to operate stably, and then the reciprocating screw 31 drives the corresponding valve core to move up and down, so as to adjust the switching state of the corresponding stop valve. When the valve core in the stop valve A432, the stop valve B442, the stop valve C451 and the stop valve D461 is in the rising open state, the valve core in the stop valve E471 is in the descending closed state, so as to realize the effective adjustment of the on and off states of the stop valve A432, the stop valve B442, the stop valve C451, the stop valve D461 and the stop valve E471.

[0059] In order to ensure that the components in the integrated control device and the associated pipelines can be assembled in an integrated manner and to facilitate unified control of the switch status of each pipeline, the following technical solution is provided.

[0060] The integrated control device also includes an assembly shell 371, an assembly cover 372 is fixedly installed on the top of the assembly shell 371, a water supply pipe A41, a water supply pipe B42, a water injection pipe A43, a water injection pipe B44, a water injection pipe C45, a drainage pipe 46, and a connecting pipe 47 are all connected to the assembly shell 371, a four-way valve 481, a three-way valve A482, a first stop valve 411, a second stop valve 421, a stop valve A432, and a stop valve B442 , stop valve C451, stop valve D461, stop valve E471, pressure transmitter A431, check valve A433, pressure transmitter a434, pressure transmitter B441, check valve B443, pressure transmitter b444 are all assembled in the assembly shell 371, the drive motor 32 is fixedly installed in the assembly shell 371, and the drive shaft 33, transmission shaft A34, and transmission shaft B35 are all rotatably installed in the assembly shell 371.

[0061] The setting of the assembly shell 371 can ensure that the pipelines and the components assembled on the pipelines are stably assembled and connected therein, and ensure that the drive motor 32, drive shaft 33, transmission shaft A34, and transmission shaft B35 can be stably installed and assembled in coordination with the stop valves, thereby realizing the integrated assembly of the components.

[0062] The top of the assembly shell 371 is open, which facilitates the stable installation of various components therein, and an assembly cover 372 is installed to effectively protect the internal components.

[0063] In order to ensure that the ratchet mechanism A3601 and the ratchet mechanism B3602 can effectively receive the power of the drive shaft 33 and stably transmit it to the transmission shaft A34 and the transmission shaft B35, and realize the diversion transmission of power, the following technical solution is provided.

[0064] The ratchet mechanism A3601 and the ratchet mechanism B3602 have the same structure and both include an inner ratchet 361, a pawl 362, and a leaf spring 363. The inner ratchet 361 is rotatably mounted in the assembly shell 371, the pawl 362 is rotatably mounted on the outer edge of the end of the drive shaft 33 and is kept in mesh with the inner ratchet 361, and the leaf spring 363 is mounted on the drive shaft 33 and is kept in contact with the pawl 362. A driving bevel gear A3611 is fixedly connected to the inner ratchet 361 in the ratchet mechanism A3601, and a transmission bevel gear A342 that is kept in mesh with the driving bevel gear A3611 is fixedly connected to the transmission shaft A34. A driving bevel gear B3612 is fixedly connected to the inner ratchet 361 in the ratchet mechanism B3602, and a transmission bevel gear B352 that is kept in mesh with the driving bevel gear B3612 is fixedly connected to the transmission shaft B35.

[0065] The leaf spring 363 pushes the pawl 362 to spread outward and engage with the ratchet teeth in the corresponding inner ratchet wheel 361 , and can drive the pawl 362 mounted thereon to operate stably when the driving shaft 33 rotates.

[0066] When the driving shaft 33 rotates forward, the pawl 362 of the ratchet mechanism A3601 can lock with the ratchet teeth of the matching inner ratchet 361, and drive the inner ratchet 361 to rotate stably, and drive the transmission shaft A34 to operate stably through the combination of the driving bevel gear A3611 and the transmission bevel gear A342, while the pawl 362 of the ratchet mechanism B3602 slides relative to the ratchet teeth of the matching inner ratchet 361, and cannot drive the inner ratchet 361 to operate.

[0067] When the driving shaft 33 reverses, the ratchet pawl 362 of the ratchet mechanism B3602 can drive the corresponding inner ratchet 361 to operate stably, and then drive the transmission shaft to operate stably through the combination of the driving bevel gear B3612 and the transmission bevel gear B352.

[0068] Example 4 See also Figure 2-4 In order to ensure the structural stability of the double-layer storage tank 1 and ensure that the water supply pipe A41, the water supply pipe B42 and the spray cooling system can be stably connected to the double-layer storage tank 1, the following technical solution is provided.

[0069] The double-layer storage tank 1 includes an outer tank body 13 and an inner tank body 14, a heat dissipation cavity 11 is formed between the outer tank body 13 and the inner tank body 14, the inner side of the inner tank body 14 is set as a storage cavity 12, the outer wall of the inner tank body 14 is fixedly connected with evenly arranged heat dissipation ring sheets 141, the inner wall of the inner tank body 14 is fixedly connected with a reinforcement ring 142, the top and bottom of the outer tank body 13 are respectively provided with a water inlet interface 131 and a drainage interface 132, the top and bottom of the inner tank body 14 are respectively connected with an upper water injection interface 143 and a lower water injection interface 144, the upper water injection interface 143 and the lower water injection interface 144 both extend to the outside of the outer tank body 13, the water injection pipe A43 is connected to the upper water injection interface 143, and the water injection pipe B44 is connected to the lower water injection interface 144.

[0070] The outer tank body 13 is assembled in multiple sections to ensure that the inner tank body 14 can be stably installed therein. An outer support ring 133 is fixedly connected to the inner wall of the outer tank body 13. A connecting hole is opened on the outer support ring 133 so that the water sprayed from the spray cooling system can be connected and gathered at the bottom of the outer tank body 13. An inner support ring 145 is fixedly connected to the outer wall of the inner tank body 14. The outer support ring 133 and the inner support ring 145 are fixedly combined by a connecting ring 151 and a bolt assembly to achieve a fixed connection between the outer tank body 13 and the inner tank body 14.

[0071] A support frame 152 is provided on the outside of the outer tank body 13 , and the support frame 152 stably supports the outer tank body 13 to ensure stable installation of the double-layer storage tank 1 .

[0072] The top of the inner tank 14 is provided with an inlet 146 for personnel to enter and exit to maintain and clean the inner tank 14 , and the bottom of the inner tank 14 is provided with an outlet 147 for controlling the discharge of the stored liquefied hydrocarbons. Both the inlet 146 and the outlet 147 extend to the outside of the outer tank 13 .

[0073] The water inlet interface 131 and the drainage interface 132 are connected to the spray cooling system to ensure the normal water inlet and outlet of the Pinlin cooling system. The upper water injection interface 143 and the lower water injection interface 144 can be connected to the water injection pipe A43 and the water injection pipe B44 to ensure that the fast water injection system can quickly inject water into the double-layer storage tank 1.

[0074] Example 5 See also Figure 1-4 In order to ensure that the spray cooling system can be connected to the water inlet interface 131 and the drainage interface 132 and realize efficient heat dissipation of the inner tank body 14, the following technical solution is provided.

[0075] The spray heat dissipation system includes a spray pipe 21, a water inlet pipe 22, a drain pipe 23, and a water tank 24. The spray pipe 21 is fixedly installed on the top of the heat dissipation chamber 11. The downstream end of the water inlet pipe 22 extends into the water inlet interface 131 and is connected to the spray pipe 21. The downstream end of the water inlet pipe 22 is connected to the water tank 24. Both ends of the drain pipe 23 are respectively connected to the water tank 24 and the drain interface 132. The radiator 221, the second booster pump 222, and the one-way valve D223 are sequentially installed on the water inlet pipe 22 along the water flow direction.

[0076] The spray pipe 21 is fixedly installed on the outer support ring 133 and the connecting ring 151. The water inlet pipe 22 supplies water to the spray pipe 21 and sprays the inner tank body 14 to cool it down. The cooled water gathers at the bottom of the outer tank body 13 and is discharged to the water storage tank 24 through the drainage interface 132 and the drainage pipe 23. The water gathered in the water storage tank 24 can flow along the water inlet pipe 22 under the pressure of the second booster pump 222. The radiator 221 can fully dissipate the heat of the water to reduce the water temperature, and the one-way valve D223 can prevent the water in the water injection pipe C45 from flowing back to the water inlet pipe 22 and affecting the heat dissipation efficiency.

[0077] In order to ensure that the water injection pipe C45 and the drainage pipe 46 can be connected to the spray cooling system, supply water and heat the spray cooling system, and directly discharge the cooled water into the cooling pool 51, the following technical solution is provided.

[0078] The water inlet pipe 22 is equipped with a three-way valve B224 arranged on the downstream side of the one-way valve D223, and the water injection pipe C45 is connected to the three-way valve B224; the drain pipe 23 is equipped with a three-way valve C231, and the drain pipe 46 is connected to the three-way valve C231; the top of the water tank 24 is equipped with a water level control valve 241, and the drain pipe 23 is connected to the water level control valve 241.

[0079] The arrangement of the three-way valve B224 and the three-way valve C231 can ensure that the water injection pipe C45 and the drainage pipe 46 are effectively connected to the water inlet pipe 22 and the drainage pipe 23 .

[0080] In case of emergency, water is directly injected into the spray cooling system through the water injection pipe C45 to improve the cooling efficiency of the system for the inner tank 14. At this time, cold water is injected into the water inlet pipe 22 through the water injection pipe C45 and the three-way valve C231 and supplies water to the spray pipe 21. The setting of the one-way valve D223 can prevent the cold water input in the water inlet pipe 22 from flowing back, and the water that has been cooled and stably increased flows out from the drainage pipe 23. In the initial stage, water is replenished through the water level control valve 241 and the water storage tank 24. When the water storage tank 24 is full, the water level control valve 241 detects the water level through the liquid level sensor in the water storage tank 24 and automatically opens and closes the valve according to the change of the water level. The discharged water then flows to the drainage pipe 46 along the three-way valve C231 to the cooling pool 51 for storage.

[0081] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0082] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A safe water injection system for remote and rapid control of a liquefied hydrocarbon storage tank, characterized in that: The double-layer storage tank (1) comprises a heat dissipation cavity (11) and a storage cavity (12) arranged inside the heat dissipation cavity (11), and also comprises a spray heat dissipation system connected to the heat dissipation cavity (11) and a rapid water injection system connected to the storage cavity (12); The rapid water injection system comprises an integrated control device, a heat sink (51), and a water storage tank (52). The rapid water injection system also comprises: a water supply pipe A (41) for connecting to a fire water supply pipeline, a water supply pipe B (42) for connecting to the water storage tank (52), a water injection pipe A (43) for connecting to the top of the storage chamber (12), a water injection pipe B (44) for connecting to the bottom of the storage chamber (12), a water injection pipe C (45) for connecting to a spray heat dissipation system, a drainage pipe (46) for connecting the spray heat dissipation system and the heat sink (51), and a connecting pipe (47) for connecting the heat sink (51) and the water storage tank (52); The integrated control device is used to control the water supply switching state of the water supply pipe A (41) and the water supply pipe B (42), and to control the on-off state of the water injection pipe A (43), the water injection pipe B (44), the water injection pipe C (45), the drainage pipe (46), and the connecting pipe (47). The water injection pipe A (43), the water injection pipe B (44), the water injection pipe C (45), and the drainage pipe (46) are kept on and off synchronously, and the on-off state of the connecting pipe (47) and the drainage pipe (46) are kept opposite.

2. A safe water injection system for remote and rapid control of a liquefied hydrocarbon storage tank according to claim 1, characterized in that: The water injection pipe A (43) is provided with a pressure transmitter A (431), a stop valve A (432), a check valve A (433), and a pressure transmitter a (434) in sequence along the water flow direction; the water injection pipe B (44) is provided with a pressure transmitter B (441), a stop valve B (442), a check valve B (443), and a pressure transmitter b (444) in sequence along the water flow direction; the water injection pipe C (45) is provided with a stop valve C (451) and a check valve C (452) in sequence along the water flow direction; the drainage pipe (46) is provided with a stop valve D (461); and the connecting pipe (47) is provided with a stop valve E (471).

3. A safe water injection system for remote and rapid control of a liquefied hydrocarbon storage tank according to claim 2, characterized in that: The water injection pipe A (43), the water injection pipe B (44), and the water injection pipe C (45) are all connected to a four-way valve (481); the water supply pipe A (41) and the water supply pipe B (42) are connected to a three-way valve A (482); the four-way valve (481) is connected to the three-way valve A (482); the water supply pipe A (41) and the water supply pipe B (42) are respectively equipped with a first stop valve (411) and a second stop valve (421); the water supply pipe B (42) is equipped with a first pressure pump (422).

4. A safe water injection system for remote and rapid control of a liquefied hydrocarbon storage tank according to claim 3, characterized in that: The valve stems of the stop valve A (432), the stop valve B (442), the stop valve C (451), the stop valve D (461), the stop valve E (471), the first stop valve (411), and the second stop valve (421) all adopt a reciprocating screw (31), and the top end of the reciprocating screw (31) is fixedly connected to a worm gear (311); The integrated control device comprises a drive motor (32), a drive shaft (33), a transmission shaft A (34), and a transmission shaft B (35); a first bevel gear (321) is fixedly connected to the output shaft of the drive motor (32); a second bevel gear (331) meshing with the first bevel gear (321) is fixedly connected to the drive shaft (33); the drive shaft (33) is connected to the transmission shaft A (34) and the transmission shaft B (35) through a ratchet mechanism A (3601) and a ratchet mechanism B (3602), respectively; the ratchet mechanism A (3601) and the ratchet mechanism B (3602) are connected to the transmission shaft A (34) and the transmission shaft B (35) through a ratchet mechanism A (3601) and a ratchet mechanism B (3602). 3602) are arranged in reverse, two groups of worm gears A (341) are fixedly connected to the transmission shaft A (34), and each group of worm gears B (351) is respectively in matching mesh with the worm wheel (311) matched with the first stop valve (411) and the second stop valve (421), and five groups of worm gears B (351) are fixedly connected to the transmission shaft B (35), and each group of worm gears B (351) is respectively in matching combination with the worm wheel (311) matched with the stop valve A (432), the stop valve B (442), the stop valve C (451), the stop valve D (461), and the stop valve E (471).

5. A safe water injection system for remote and rapid control of a liquefied hydrocarbon storage tank according to claim 4, characterized in that: The integrated control device further comprises an assembly shell (371), an assembly cover (372) being fixedly mounted on the top of the assembly shell (371), the water supply pipe A (41), the water supply pipe B (42), the water injection pipe A (43), the water injection pipe B (44), the water injection pipe C (45), the drainage pipe (46), and the connecting pipe (47) are all connected to the assembly shell (371), and the four-way valve (481), the three-way valve A (482), the first stop valve (411), the second stop valve (421), the stop valve A (432), the stop valve B (44), the water injection pipe C (45), the drainage pipe (46), and the connecting pipe (47) are all connected to the assembly shell (371). The pressure transmitter (431), the check valve (433), the pressure transmitter a (434), the pressure transmitter B (441), the check valve B (443), and the pressure transmitter b (444) are all assembled in the assembly shell (371); the driving motor (32) is fixedly installed in the assembly shell (371); and the driving shaft (33), the transmission shaft A (34), and the transmission shaft B (35) are all rotatably installed in the assembly shell (371).

6. A safe water injection system for remote and rapid control of a liquefied hydrocarbon storage tank according to claim 5, characterized in that: The ratchet mechanism A (3601) and the ratchet mechanism B (3602) have the same structure and both comprise an inner ratchet (361), a pawl (362), and a leaf spring (363); the inner ratchet (361) is rotatably mounted in the assembly shell (371); the pawl (362) is rotatably mounted on the outer edge of the end of the drive shaft (33) and is kept in mesh with the inner ratchet (361); the leaf spring (363) is mounted on the drive shaft (33) and is kept in contact with the pawl (362); The inner ratchet (361) in the ratchet mechanism A (3601) is fixedly connected to a driving bevel gear A (3611); the transmission shaft A (34) is fixedly connected to a driving bevel gear A (342) that is meshed with the driving bevel gear A (3611); the inner ratchet (361) in the ratchet mechanism B (3602) is fixedly connected to a driving bevel gear B (3612); and the transmission shaft B (35) is fixedly connected to a driving bevel gear B (352) that is meshed with the driving bevel gear B (3612).

7. A safe water injection system for remote and rapid control of a liquefied hydrocarbon storage tank according to claim 1, characterized in that: The double-layer storage tank (1) comprises an outer tank body (13) and an inner tank body (14); a heat dissipation cavity (11) is formed between the outer tank body (13) and the inner tank body (14); the inner side of the inner tank body (14) is provided with a storage cavity (12); the outer wall of the inner tank body (14) is fixedly connected with heat dissipation ring sheets (141) arranged evenly; the inner wall of the inner tank body (14) is fixedly connected with a reinforcement ring (142); the top and bottom of the outer tank body (13) are respectively provided with a water inlet interface (131) and a water discharge interface (132); the top and bottom of the inner tank body (14) are respectively connected with an upper water injection interface (143) and a lower water injection interface (144); the upper water injection interface (143) and the lower water injection interface (144) both extend to the outside of the outer tank body (13); the water injection pipe A (43) is connected to the upper water injection interface (143); and the water injection pipe B (44) is connected to the lower water injection interface (144).

8. A safe water injection system for remote and rapid control of a liquefied hydrocarbon storage tank according to claim 7, characterized in that: The spray heat dissipation system comprises a spray pipe (21), a water inlet pipe (22), a drainage pipe (23), and a water storage tank (24); the spray pipe (21) is fixedly mounted on the top of the heat dissipation chamber (11); the downstream end of the water inlet pipe (22) extends into the water inlet interface (131) and is connected to the spray pipe (21); the downstream end of the water inlet pipe (22) is connected to the water storage tank (24); the two ends of the drainage pipe (23) are respectively connected to the water storage tank (24) and the drainage interface (132); and a radiator (221), a second pressure pump (222), and a one-way valve D (223) are sequentially mounted on the water inlet pipe (22) along the water flow direction.

9. A safe water injection system for remote rapid control of a liquefied hydrocarbon storage tank according to claim 8, characterized in that: The water inlet pipe (22) is equipped with a three-way valve B (224) arranged on the downstream side of the one-way valve D (223), and the water injection pipe C (45) is connected to the three-way valve B (224); the water discharge pipe (23) is equipped with a three-way valve C (231), and the water discharge pipe (46) is connected to the three-way valve C (231); the top of the water storage tank (24) is equipped with a water level control valve (241), and the water discharge pipe (23) is connected to the water level control valve (241).

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