Over-temperature automatic explosion suppression device and explosion suppression method for oil storage tank

Abstract

The invention belongs to the technical field of safety protection of oil storage tanks in chemical places, and particularly relates to an automatic over-temperature explosion suppression device and method for an oil storage tank. The device comprises a fire extinguishing agent container, an outlet valve is arranged at the bottom of the fire extinguishing agent container, the outlet valve is blocked through a fusible plug or an automatic valve, and the outlet valve can be communicated with the interior of an oil product storage tank body after being opened; and a gas fire extinguishing agent is filled in the fire extinguishing agent container. The fire extinguishing agent container is installed at the top end of an oil product storage tank body through a fixing piece, a storage tank inlet hole is formed in the top end of the oil product storage tank, a breather valve is arranged at one end of the storage tank inlet hole, and the fire extinguishing agent container is installed at the other end of the storage tank inlet hole and opposite to the breather valve. When the ambient temperature around the oil product storage tank exceeds a temperature threshold value, the fusible plug or the automatic valve can be melted or opened, so that the gas extinguishing agent is released into the internal space of the oil product storage tank and is filled with the internal space; and the redundant gas extinguishing agent overflows from the breather valve, so that the purpose of inhibiting oil gas fire or burning explosion in the oil product storage tank is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of safety protection of oil storage tanks in chemical sites, and particularly relates to an over-temperature automatic explosion suppression device and explosion suppression method for oil storage tanks. Background Art

[0002] In a fire scenario, when a storage tank containing flammable media encounters high temperatures, the evaporation of the liquid in the tank accelerates, forming an explosion zone in the space above the liquid surface in the tank. The explosive medium encounters an ignition source from the outside (such as static electricity, sparks, etc.), which is very likely to cause combustion and explosion, thereby further causing the liquid in the tank to explode, ultimately causing an explosion, and even casualties and huge economic losses.

[0003] The current solution to the explosion suppression problem of horizontal oil storage tanks is mainly external fire extinguishers, including foam fire extinguishers and gas fire extinguishers, etc. The fire extinguishing agent can be sprayed inside the tank through a special pipeline. The problem with this technical solution and product is that tank fires or explosions are usually very sudden. When a tank fire or explosion occurs, the tank is likely to have been damaged. At this time, it is often too late to start the fire extinguishing system. Moreover, if the destructive power of the tank fire or explosion is large at the beginning, it is likely to damage the pipeline facilities of the fire extinguishing system and even endanger the fire extinguishing system, causing the fixed fire extinguishing system equipped with the tank to fail.

[0004] Patent CN113384833A (a fire prevention and control and fire suppression method for petrochemical storage tanks) can effectively reduce the risk of full-area fires in petrochemical storage tanks. When a petrochemical storage tank is struck by lightning and a local fire occurs, the floating plate on the liquid surface can block the heat transfer from the flame to the fuel, reduce the vapor volatilization rate of the fuel, thereby effectively suppressing the scale of the flame and improving the efficiency of foam fire extinguishing. However, this patent is mainly aimed at oily sewage pools, and uses multiple hexagonal small floating covers. The small floating covers are spread side by side above the oil surface to form a solid isolation layer to suppress the volatilization of oil and gas, thereby achieving the effect of explosion suppression. There are certain gaps between the small floating covers, and the oil in the gaps evaporates slowly, so this patent cannot completely eliminate the volatilization of oil and gas, and the explosion suppression effect is limited.

[0005] Patent CN210936361U (a nano-membrane isolated oil and gas suppression system) can reduce the internal oil and gas concentration to below 10% LEL in a short time and further isolate the residual liquid surface of the oil storage and transportation device to be cleaned by nano-membrane covering to obtain a relatively safe operating space. This patent mainly uses a solution containing a special surfactant (such as a fluorocarbon surfactant, etc.) to spread on the surface of the oil to form a thin liquid film, and the liquid seal of the liquid film is used to block the volatilization of oil and gas to achieve the purpose of explosion suppression. However, the life of the thin liquid film formed by the special surfactant solution on the surface of the oil is limited. In order to maintain the durability of the liquid film on the surface of the oil, it is necessary to continuously replenish the liquid film solution by droplet deposition. Therefore, this application is also limited.

[0006] Storage tanks filled with flammable liquid media form an oil-gas space above the liquid surface in the tank, which is an explosion-free zone. When encountering an external ignition source (such as static electricity, sparks, etc.), it is very easy to explode. Existing external fire extinguishers for storage tanks are often not activated in a timely manner. When a tank fire or explosion occurs, the tank is likely to have been damaged. If the destructive power of a tank fire or explosion is large at the beginning, it is likely to damage the pipe facilities of the fire extinguishing system and even endanger the fire extinguishing system, thereby causing the fixed fire extinguishing system equipped with the tank to fail.

[0007] If there is a similar safety-designed storage tank explosion protection process, that is, the fire extinguishing system is activated before a fire or explosion occurs in the storage tank, there is a greater success rate to suppress the fire or explosion accident of the storage tank. The fire extinguishing system can be activated in time by detecting signals such as temperature and pressure in the storage tank. At present, the mainstream technology for the problem of internal gas phase space explosion in oil-containing storage tanks is to use external fire extinguishers, including fixed fire-fighting facilities and mobile fire-fighting facilities. However, the configuration of the external fire extinguishing system is relatively cumbersome, and the installation and use lack flexibility. Therefore, the built-in automatic fire extinguishing system for storage tanks has a great application prospect, and there is currently no targeted built-in automatic fire extinguishing system for storage tanks. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide an automatic explosion suppression device and explosion suppression method for an oil storage tank over-temperature. The automatic explosion suppression device over-temperature can be installed inside an oil storage tank, aiming to solve the problem of combustion and explosion risks in the gas phase space inside a horizontal storage tank containing flammable and explosive liquids such as oil.

[0009] The technical solutions adopted are:

[0010] An over-temperature automatic explosion suppression device for an oil storage tank comprises a fire extinguishing agent container, an outlet valve is arranged at the bottom of the fire extinguishing agent container, the outlet valve is blocked by a fusible plug or an automatic valve, and the outlet valve can be connected with the inside of the oil storage tank body after opening;

[0011] The fire extinguishing agent container contains a gas fire extinguishing agent;

[0012] The fire extinguishing agent container is installed on the top of the oil storage tank body through a fixing piece. The top of the oil storage tank is provided with a tank inlet hole. A breathing valve is provided at one end of the tank inlet hole. The fire extinguishing agent container is installed at the other end of the tank inlet hole, opposite to the breathing valve.

[0013] Preferably, the volume of the fire extinguishing agent container is 10-30L, the material is stainless steel, the wall thickness is 2.5-3.5mm, the shape is cylindrical, the diameter is 300-450mm, and the height is 300-500mm; the filling pressure of the fire extinguishing agent container is 0-16MPa.

[0014] As a further preference, the wall thickness of the fire extinguishing agent container is 3 mm, its diameter is 400 mm, and its height is 400 mm. The maximum filling pressure of the fire extinguishing agent container is 16 MPa.

[0015] Preferably, the fire extinguishing agent container is installed inside the top end of the oil storage tank body.

[0016] As a further preferred embodiment, the top of the fire extinguishing agent container is mounted inside the top of the oil storage tank body through a fixing member, which can be a flange, a mechanical buckle, or a threaded bolt connection.

[0017] Preferably, the fire extinguishing agent container is mounted on the outside of the top of the oil storage tank body through a fixing piece, a filling port is arranged on the top of the fire extinguishing agent container, and an outlet valve in the middle of the bottom is connected to the inside of the oil storage tank. The fixing piece can be a flange, a mechanical buckle, or a threaded bolt connection.

[0018] As a further preferred arrangement, the outlet valve of the fire extinguishing agent container is connected to the interior of the oil storage tank through a fire extinguishing agent release channel.

[0019] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0020] (1) Fill the fire extinguishing agent container with an appropriate amount of gaseous fire extinguishing agent (it can be filled within the pressure range as required), plug the outlet valve, and then install it on the top of the oil storage tank;

[0021] (2) When the ambient temperature around the oil storage tank exceeds a certain threshold, the fusible plug or automatic valve will melt or open, allowing the gaseous fire extinguishing agent to be released into the space inside the oil storage tank and fill it;

[0022] (3) When the gas fire extinguishing agent fills the internal space of the oil storage tank, the excess gas fire extinguishing agent overflows from the breathing valve, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0023] Preferably, the gaseous fire extinguishing agent is perfluorohexanone or heptafluoropropane.

[0024] Preferably, the outlet valve is blocked by a fusible plug, the fusible plug is made of a fusible alloy composed of three or four metal elements of bismuth, aluminum, tin, cadmium, etc., and preferably an alloy whose main component is tin, and the composition is regulated by conventional methods so that the melting temperature ranges from about 70 to 80°C;

[0025] In the explosion suppression method, the certain threshold is the melting temperature of the fusible plug.

[0026] Preferably, the outlet valve is blocked by an automatic valve; a temperature detector is arranged outside the top of the oil storage tank, next to the fire extinguishing agent container, and the temperature detector is connected to the control system, and the control system can be started through a mobile phone APP or remote control.

[0027] Use existing technology to set up a special mobile phone APP program, infrared remote control method, or control the control system through a computer remote program to start or close the automatic valve.

[0028] As a further preferred embodiment, the control system sets a temperature threshold, the temperature threshold range is 70-80°C, and when the temperature threshold range is exceeded, the control system can be started by a mobile phone APP program or infrared remote control or a computer remote program to open the automatic valve and release the gas extinguishing agent. The set temperature threshold is the threshold of "temperature exceeds a certain threshold" referred to in the explosion suppression method.

[0029] As a further preference, the control system is also connected to an alarm device, and when the temperature exceeds a set threshold, the alarm device automatically alarms to warn to open the automatic valve.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The oil storage tank over-temperature automatic explosion suppression device of the present invention can be arranged inside or outside the oil storage tank, but the outlet valves are all connected to the inside of the oil storage tank, so timely activation can be achieved, and the gas fire extinguisher can quickly spread to the internal space of the oil storage tank, and the installation and use are flexible;

[0032] The explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks of the present invention can open the outlet valve at a temperature of 70-80°C, and the gas fire extinguishing agent can diffuse rapidly, thereby achieving the purpose of suppressing oil and gas fire or explosion inside the oil storage tank. The method is simple and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural diagram of an over-temperature automatic explosion suppression device for an oil storage tank in Example 1 of the present invention;

[0034] Figure 2 This is a structural diagram of an over-temperature automatic explosion suppression device for an oil storage tank in Example 4 of the present invention;

[0035] Figure 3 This is a structural diagram of an over-temperature automatic explosion suppression device for an oil storage tank in Example 6 of the present invention;

[0036] Figure 4 This is a structural diagram of an automatic explosion suppression device for an oil storage tank overtemperature in Example 12 of the present invention.

[0037] Explanation of the icons in the figure:

[0038] 1-Oil storage tank; 2-Fixed parts; 3-Fire extinguishing agent container; 4-Gas fire extinguishing agent; 5-Outlet valve; 6-Storage tank inlet hole; 7-Breathing valve; 8-Fire filling port; 9-Fire extinguishing agent release channel;

[0039] 10-automatic valve, 101-fire extinguishing agent release port;

[0040] 11- temperature detector; 12- control system; 13- explosion-proof connecting wire. DETAILED DESCRIPTION

[0041] The drawings are for illustrative purposes only. To better illustrate the present embodiment, some parts of the drawings are omitted, enlarged or reduced, and do not represent the size of the actual product. The terms "upper", "lower", "left", "right", "side", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0042] For those skilled in the art, some well-known structures and their descriptions in the drawings may be omitted, and therefore, they should not be understood as limitations of the present invention.

[0043] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] Example 1

[0045] like Figure 1 As shown, an automatic explosion suppression device for over-temperature of an oil storage tank comprises a fire extinguishing agent container 3, an outlet valve 5 is arranged at the bottom of the fire extinguishing agent container 3, the outlet valve 5 is blocked by a fusible plug, and the outlet valve 5 can be connected with the inside of the oil storage tank 1 after opening;

[0046] The fire extinguishing agent container 3 contains a gas fire extinguishing agent 4;

[0047] The fire extinguishing agent container 3 is installed inside the top of the oil storage tank 1 through the fixing member 2. The fixing member 2 is a mechanical buckle commonly used in the prior art, which is easy to install.

[0048] A tank inlet hole 6 is provided at the top of the oil storage tank 1 , a breathing valve 7 is provided at one end of the tank inlet hole 6 , and the fire extinguishing agent container 3 is installed at the other end of the tank inlet hole 6 , opposite to the breathing valve 7 .

[0049] Preferably, the volume of the fire extinguishing agent container is 10L, the material is stainless steel, the wall thickness is 2.5mm, the shape is cylindrical, and the diameter is 300mm; the filling pressure of the fire extinguishing agent container 3 is 12MPa. The outlet valve 5 of the fire extinguishing agent container 3 faces the center of the oil storage tank 1.

[0050] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0051] (1) A proper amount of gaseous fire extinguishing agent 4 is loaded into the fire extinguishing agent container 3, the outlet valve 5 is blocked with a fusible plug, and then installed inside the top of the oil storage tank 1;

[0052] (2) When the ambient temperature of the oil storage tank 1 exceeds 75±2°C, the fusible plug will melt, thereby opening the outlet valve 5, allowing the gaseous fire extinguishing agent 4 to be released into the space inside the oil storage tank 1 and fill it;

[0053] (3) When the gas fire extinguishing agent 4 fills up the internal space of the oil storage tank 1, the excess gas fire extinguishing agent 4 overflows from the breathing valve 7, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0054] Preferably, the gas fire extinguishing agent used in this embodiment is perfluorohexanone.

[0055] Preferably, the fusible plug is made of a fusible tin alloy containing bismuth and cadmium, which is an alloy synthesized by a conventional method in the prior art; the melting temperature range of the fusible plug is 75±2°C.

[0056] Example 2

[0057] An automatic explosion suppression device for over-temperature of an oil storage tank, comprising a fire extinguishing agent container 3, an outlet valve 5 is arranged at the bottom of the fire extinguishing agent container 3, the outlet valve 5 is blocked by a fusible plug, and the outlet valve 5 can be connected with the inside of the oil storage tank 1 after opening;

[0058] The fire extinguishing agent container 3 contains a gas fire extinguishing agent 4;

[0059] The fire extinguishing agent container 3 is installed inside the top of the oil storage tank 1 through the fixing member 2. The fixing member 2 is a threaded bolt commonly used in the prior art, which is easy to install.

[0060] A tank inlet hole 6 is provided at the top of the oil storage tank 1 , a breathing valve 7 is provided at one end of the tank inlet hole 6 , and the fire extinguishing agent container 3 is installed at the other end of the tank inlet hole 6 , opposite to the breathing valve 7 .

[0061] Preferably, the volume of the fire extinguishing agent container is 20L, the material is stainless steel, the wall thickness is 2.5mm, the shape is cylindrical, and the diameter is 400mm; the filling pressure of the fire extinguishing agent container 3 is 14MPa. The outlet valve 5 of the fire extinguishing agent container 3 faces the center of the oil storage tank 1.

[0062] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0063] (1) A proper amount of gaseous fire extinguishing agent 4 is loaded into the fire extinguishing agent container 3, the outlet valve 5 is blocked with a fusible plug, and then installed inside the top of the oil storage tank 1;

[0064] (2) When the ambient temperature of the oil storage tank 1 exceeds 75±2°C, the fusible plug will melt, thereby opening the outlet valve 5, allowing the gaseous fire extinguishing agent 4 to be released into the space inside the oil storage tank 1 and fill it;

[0065] (3) When the gas fire extinguishing agent 4 fills up the internal space of the oil storage tank 1, the excess gas fire extinguishing agent 4 overflows from the breathing valve 7, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0066] Preferably, the gas fire extinguishing agent used in this embodiment is heptafluoropropane.

[0067] Preferably, the fusible plug is made of a fusible aluminum alloy containing metal elements such as bismuth, tin, and cadmium, and its melting point is adjusted within the required range using conventional methods in the prior art; the melting temperature range of the fusible plug is 75±2°C.

[0068] Example 3

[0069] An automatic explosion suppression device for over-temperature of an oil storage tank, comprising a fire extinguishing agent container 3, an outlet valve 5 is arranged at the bottom of the fire extinguishing agent container 3, the outlet valve 5 is blocked by a fusible plug, and the outlet valve 5 can be connected with the inside of the oil storage tank 1 after opening;

[0070] The fire extinguishing agent container 3 contains a gas fire extinguishing agent 4;

[0071] The fire extinguishing agent container 3 is installed inside the top of the oil storage tank 1 through the fixing member 2. The fixing member 2 is a mechanical buckle commonly used in the prior art, which is easy to install.

[0072] A tank inlet hole 6 is provided at the top of the oil storage tank 1 , a breathing valve 7 is provided at one end of the tank inlet hole 6 , and the fire extinguishing agent container 3 is installed at the other end of the tank inlet hole 6 , opposite to the breathing valve 7 .

[0073] Preferably, the fire extinguishing agent container has a capacity of 30L, is made of stainless steel, has a wall thickness of 3.0mm, is cylindrical in shape, and has a diameter of 450mm; the filling pressure of the fire extinguishing agent container 3 is 16MPa. The outlet valve 5 of the fire extinguishing agent container 3 faces the center of the oil storage tank 1.

[0074] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0075] (1) A proper amount of gaseous fire extinguishing agent 4 is loaded into the fire extinguishing agent container 3, the outlet valve 5 is blocked with a fusible plug, and then installed inside the top of the oil storage tank 1;

[0076] (2) When the ambient temperature of the oil storage tank 1 exceeds 75±2°C, the fusible plug will melt, thereby opening the outlet valve 5, allowing the gaseous fire extinguishing agent 4 to be released into the space inside the oil storage tank 1 and fill it;

[0077] (3) When the gas fire extinguishing agent 4 fills up the internal space of the oil storage tank 1, the excess gas fire extinguishing agent 4 overflows from the breathing valve 7, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0078] Preferably, the gas fire extinguishing agent used in this embodiment is perfluorohexanone.

[0079] Preferably, the fusible plug is made of a fusible tin alloy containing bismuth, aluminum and cadmium; the melting temperature range of the fusible plug is 75±2°C.

[0080] Example 4

[0081] like Figure 2 As shown, an automatic explosion suppression device for over-temperature of an oil storage tank includes a fire extinguishing agent container 3, which is mounted on the outside of the top of the oil storage tank 1 through a fixing member 2. An outlet valve 5 is arranged at the bottom of the fire extinguishing agent container 3, and the outlet valve 5 is blocked by a fusible plug. The outlet valve 5 is connected to the inside of the oil storage tank 1, and can be connected to the inside of the oil storage tank 1 after the outlet valve 5 is opened.

[0082] The top of the fire extinguishing agent container 3 is provided with a filling port 8 , and the gas fire extinguishing agent 4 is filled inside; the gas fire extinguishing agent 4 can be filled through the filling port 8 .

[0083] The fixing member 2 is a flange commonly used in the prior art, and the installation using the flange is convenient and quick.

[0084] A tank inlet hole 6 is provided at the top of the oil storage tank 1 , a breathing valve 7 is provided at one end of the tank inlet hole 6 , and the fire extinguishing agent container 3 is installed at the other end of the tank inlet hole 6 , opposite to the breathing valve 7 .

[0085] Preferably, the volume of the fire extinguishing agent container is 20L, the material is stainless steel, the wall thickness is 3.5mm, the shape is cylindrical, and the diameter is 400mm; the filling pressure of the fire extinguishing agent container 3 is 14MPa. The outlet valve 5 of the fire extinguishing agent container 3 faces the center of the oil storage tank 1.

[0086] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0087] (1) A proper amount of gaseous fire extinguishing agent 4 is loaded into the fire extinguishing agent container 3, the outlet valve 5 is blocked with a fusible plug, and then installed on the outside of the top of the oil storage tank 1;

[0088] (2) When the ambient temperature of the oil storage tank 1 exceeds 75±2°C, the fusible plug will melt, thereby opening the outlet valve 5, allowing the gaseous fire extinguishing agent 4 to be released into the space inside the oil storage tank 1 and fill it;

[0089] (3) When the gas fire extinguishing agent 4 fills up the internal space of the oil storage tank 1, the excess gas fire extinguishing agent 4 overflows from the breathing valve 7, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0090] Preferably, the gas fire extinguishing agent used in this embodiment is heptafluoropropane.

[0091] Preferably, the fusible plug is made of a fusible tin alloy; the melting temperature range of the fusible plug is 75±2°C.

[0092] Example 5

[0093] An automatic explosion suppression device for over-temperature of an oil storage tank includes a fire extinguishing agent container 3, which is mounted on the outside of the top of the oil storage tank 1 through a fixing member 2. An outlet valve 5 is arranged at the bottom of the fire extinguishing agent container 3, and the outlet valve 5 is blocked by a fusible plug. A section of a fire extinguishing agent release channel 9 is connected below the outlet valve 5. The outlet valve 5 is connected to the inside of the oil storage tank 1 through the fire extinguishing agent release channel 9. After the outlet valve 5 is opened, it can communicate with the inside of the oil storage tank 1.

[0094] The top of the fire extinguishing agent container 3 is provided with a filling port 8 , and the gas fire extinguishing agent 4 is filled inside; the gas fire extinguishing agent 4 can be filled through the filling port 8 .

[0095] The fixing member 2 is a flange commonly used in the prior art, and the installation using the flange is convenient and quick.

[0096] A tank inlet hole 6 is provided at the top of the oil storage tank 1 , a breathing valve 7 is provided at one end of the tank inlet hole 6 , and the fire extinguishing agent container 3 is installed at the other end of the tank inlet hole 6 , opposite to the breathing valve 7 .

[0097] Preferably, the volume of the fire extinguishing agent container is 30L, the material is stainless steel, the wall thickness is 3.5mm, the shape is cylindrical, and the diameter is 400mm; the filling pressure of the fire extinguishing agent container 3 is 16MPa.

[0098] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0099] (1) A proper amount of gaseous fire extinguishing agent 4 is loaded into the fire extinguishing agent container 3, the outlet valve 5 is blocked with a fusible plug, and then installed on the top of the oil storage tank 1;

[0100] (2) When the ambient temperature of the oil storage tank 1 exceeds 75±2°C, the fusible plug will melt, thereby opening the outlet valve 5, allowing the gaseous fire extinguishing agent 4 to be released into the space inside the oil storage tank 1 and fill it;

[0101] (3) When the gas fire extinguishing agent 4 fills up the internal space of the oil storage tank 1, the excess gas fire extinguishing agent 4 overflows from the breathing valve 7, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0102] Preferably, the gas fire extinguishing agent used in this embodiment is perfluorohexanone.

[0103] Preferably, the fusible plug is made of a fusible tin alloy; the melting temperature range of the fusible plug is 75±2°C.

[0104] Example 6

[0105] like Figure 3 As shown, an automatic explosion suppression device for over-temperature of an oil storage tank includes a fire extinguishing agent container 3, which is installed on the outside of the top of the oil storage tank 1 through a fixing member 2. An outlet valve 5 is arranged at the bottom of the fire extinguishing agent container 3, and the outlet valve 5 is blocked by an automatic valve 10. A section of fire extinguishing agent release channel 9 is connected below the outlet valve 5, and the outlet valve 5 is connected to the inside of the oil storage tank 1 through the fire extinguishing agent release channel 9. After the outlet valve 5 is opened, it can communicate with the inside of the oil storage tank 1.

[0106] The automatic valve 10 is connected to the control system 12 via an explosion-proof connection line 13 , and the control system 12 is provided with a temperature detector 11 for performing temperature detection. The control system 12 can start or close the automatic valve 10 .

[0107] The top of the fire extinguishing agent container 3 is provided with a filling port 8 , and the gas fire extinguishing agent 4 is filled inside; the gas fire extinguishing agent 4 can be filled through the filling port 8 .

[0108] A tank inlet hole 6 is provided at the top of the oil storage tank 1 , a breathing valve 7 is provided at one end of the tank inlet hole 6 , and the fire extinguishing agent container 3 is installed at the other end of the tank inlet hole 6 , opposite to the breathing valve 7 .

[0109] Preferably, the fire extinguishing agent container has a capacity of 30 L, is made of stainless steel, has a wall thickness of 3.5 mm, is cylindrical in shape, and has a diameter of 450 mm; the filling pressure of the fire extinguishing agent container 3 is 16 MPa.

[0110] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0111] (1) A proper amount of gaseous fire extinguishing agent 4 is loaded into the fire extinguishing agent container 3, the outlet valve 5 is blocked with an automatic valve 10, and then installed on the outside of the top of the oil storage tank 1;

[0112] (2) The temperature detector 11 transmits the detected temperature to the control system 12 in real time. When the ambient temperature of the oil storage tank 1 exceeds 75±2°C and reaches the set temperature threshold, the control system 12 starts the automatic valve 10 to open, thereby opening the outlet valve 5, so that the gaseous fire extinguishing agent 4 is released into the space inside the oil storage tank 1 and fills it;

[0113] (3) When the gas fire extinguishing agent 4 fills up the internal space of the oil storage tank 1, the excess gas fire extinguishing agent 4 overflows from the breathing valve 7, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0114] Preferably, the gas fire extinguishing agent used in this embodiment is perfluorohexanone.

[0115] The control system 12 can be controlled by a remote computer, and the automatic valve 10 can be opened remotely after the control.

[0116] Example 7

[0117] An over-temperature automatic explosion suppression device for an oil storage tank comprises a fire extinguishing agent container 3, wherein the fire extinguishing agent container 3 is mounted on the outside of the top end of an oil storage tank 1 through a fixing member 2.

[0118] An outlet valve 5 is arranged at the bottom of the fire extinguishing agent container 3, and the outlet valve 5 is blocked by an automatic valve 10. A fire extinguishing agent release channel 9 is connected below the outlet valve 5. The outlet valve 5 is connected to the inside of the oil storage tank 1 through the fire extinguishing agent release channel 9. After the outlet valve 5 is opened, it can be connected to the inside of the oil storage tank 1.

[0119] The automatic valve 10 is connected to the control system 12 via an explosion-proof connection line 13 , and the control system 12 is provided with a temperature detector 11 for performing temperature detection. The control system 12 can start or close the automatic valve 10 .

[0120] The top of the fire extinguishing agent container 3 is provided with a filling port 8 , and the gas fire extinguishing agent 4 is filled inside; the gas fire extinguishing agent 4 can be filled through the filling port 8 .

[0121] A tank inlet hole 6 is provided at the top of the oil storage tank 1 , a breathing valve 7 is provided at one end of the tank inlet hole 6 , and the fire extinguishing agent container 3 is installed at the other end of the tank inlet hole 6 , opposite to the breathing valve 7 .

[0122] Preferably, the fire extinguishing agent container has a capacity of 20 L, is made of stainless steel, has a wall thickness of 3.0 mm, is cylindrical in shape, and has a diameter of 400 mm; the filling pressure of the fire extinguishing agent container 3 is 14 MPa.

[0123] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0124] (1) A proper amount of gaseous fire extinguishing agent 4 is loaded into the fire extinguishing agent container 3, the outlet valve 5 is blocked with an automatic valve 10, and then installed on the top of the oil storage tank 1;

[0125] (2) The temperature detector 11 transmits the detected temperature to the control system 12 in real time. When the ambient temperature of the oil storage tank 1 exceeds 75±2°C and reaches the set temperature threshold, the control system 12 starts the automatic valve 10 to open, thereby opening the outlet valve 5, so that the gaseous fire extinguishing agent 4 is released into the space inside the oil storage tank 1 and fills it;

[0126] (3) When the gas fire extinguishing agent 4 fills up the internal space of the oil storage tank 1, the excess gas fire extinguishing agent 4 overflows from the breathing valve 7, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0127] Preferably, the gas fire extinguishing agent used in this embodiment is heptafluoropropane.

[0128] The control system 12 can be controlled by a remote computer, and the automatic valve 10 can be opened remotely after the control.

[0129] Example 8

[0130] An over-temperature automatic explosion suppression device for an oil storage tank comprises a fire extinguishing agent container 3, wherein the fire extinguishing agent container 3 is mounted on the outside of the top end of an oil storage tank 1 through a fixing member 2.

[0131] An outlet valve 5 is arranged at the bottom of the fire extinguishing agent container 3, and the outlet valve 5 is blocked by an automatic valve 10. A fire extinguishing agent release channel 9 is connected below the outlet valve 5. The outlet valve 5 is connected to the inside of the oil storage tank 1 through the fire extinguishing agent release channel 9. After the outlet valve 5 is opened, it can be connected to the inside of the oil storage tank 1.

[0132] The automatic valve 10 is connected to the control system 12 via an explosion-proof connection line 13 , and the control system 12 is provided with a temperature detector 11 for performing temperature detection. The control system 12 can start or close the automatic valve 10 .

[0133] The top of the fire extinguishing agent container 3 is provided with a filling port 8 , and the gas fire extinguishing agent 4 is filled inside; the gas fire extinguishing agent 4 can be filled through the filling port 8 .

[0134] A tank inlet hole 6 is provided at the top of the oil storage tank 1 , a breathing valve 7 is provided at one end of the tank inlet hole 6 , and the fire extinguishing agent container 3 is installed at the other end of the tank inlet hole 6 , opposite to the breathing valve 7 .

[0135] Preferably, the volume of the fire extinguishing agent container is 30L, the material is stainless steel, the wall thickness is 3.5mm, the shape is cylindrical, and the diameter is 400mm; the filling pressure of the fire extinguishing agent container 3 is 16MPa.

[0136] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0137] (1) A proper amount of gaseous fire extinguishing agent 4 is loaded into the fire extinguishing agent container 3, the outlet valve 5 is blocked with an automatic valve 10, and then installed on the top of the oil storage tank 1;

[0138] (2) The temperature detector 11 transmits the detected temperature to the control system 12 in real time. When the ambient temperature of the oil storage tank 1 exceeds 75±2°C and reaches the set temperature threshold, the control system 12 starts the automatic valve 10 to open, thereby opening the outlet valve 5, so that the gaseous fire extinguishing agent 4 is released into the space inside the oil storage tank 1 and fills it;

[0139] (3) When the gas fire extinguishing agent 4 fills up the internal space of the oil storage tank 1, the excess gas fire extinguishing agent 4 overflows from the breathing valve 7, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0140] Preferably, the gas fire extinguishing agent used in this embodiment is perfluorohexanone.

[0141] The control system 12 can be controlled through a mobile phone APP. After the mobile phone downloads the corresponding APP, the mobile phone can be operated to control the control system 12 to open or close the automatic valve 10.

[0142] Example 9

[0143] An over-temperature automatic explosion suppression device for an oil storage tank comprises a fire extinguishing agent container 3, wherein the fire extinguishing agent container 3 is mounted on the outside of the top end of an oil storage tank 1 through a fixing member 2.

[0144] An outlet valve 5 is arranged at the bottom of the fire extinguishing agent container 3, and the outlet valve 5 is blocked by an automatic valve 10. A fire extinguishing agent release channel 9 is connected below the outlet valve 5. The outlet valve 5 is connected to the inside of the oil storage tank 1 through the fire extinguishing agent release channel 9. After the outlet valve 5 is opened, it can be connected to the inside of the oil storage tank 1.

[0145] The automatic valve 10 is connected to the control system 12 via an explosion-proof connecting line 13. The control system 12 is provided with a temperature detector 11 for performing temperature detection.

[0146] An automatic alarm device is also installed, which automatically alarms when the set temperature exceeds the set problem, and warns the control system 12 to start the automatic valve 10 in time.

[0147] The top of the fire extinguishing agent container 3 is provided with a filling port 8 , and the gas fire extinguishing agent 4 is filled inside; the gas fire extinguishing agent 4 can be filled through the filling port 8 .

[0148] A tank inlet hole 6 is provided at the top of the oil storage tank 1 , a breathing valve 7 is provided at one end of the tank inlet hole 6 , and the fire extinguishing agent container 3 is installed at the other end of the tank inlet hole 6 , opposite to the breathing valve 7 .

[0149] Preferably, the fire extinguishing agent container has a capacity of 30 L, is made of stainless steel, has a wall thickness of 3.5 mm, is cylindrical in shape, and has a diameter of 450 mm; the filling pressure of the fire extinguishing agent container 3 is 16 MPa.

[0150] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0151] (1) A proper amount of gaseous fire extinguishing agent 4 is loaded into the fire extinguishing agent container 3, the outlet valve 5 is blocked with an automatic valve 10, and then installed on the top of the oil storage tank 1;

[0152] (2) The temperature detector 11 transmits the detected temperature to the control system 12 in real time. When the ambient temperature of the oil storage tank 1 exceeds 75±2°C and reaches the set temperature threshold, the automatic alarm device will sound an alarm, alerting the control system 12 to start in time. The control system 12 starts the automatic valve 10 to open, thereby opening the outlet valve 5, allowing the gaseous fire extinguishing agent 4 to be released into the space inside the oil storage tank 1 and fill it;

[0153] (3) When the gas fire extinguishing agent 4 fills up the internal space of the oil storage tank 1, the excess gas fire extinguishing agent 4 overflows from the breathing valve 7, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0154] Preferably, the gas fire extinguishing agent used in this embodiment is heptafluoropropane.

[0155] The control system 12 can be controlled through a mobile phone APP. After the mobile phone downloads the corresponding APP, the mobile phone can be operated to control the control system 12 to open or close the automatic valve 10.

[0156] Example 10

[0157] An automatic explosion suppression device for over-temperature of an oil storage tank comprises a fire extinguishing agent container 3, wherein the fire extinguishing agent container 3 is mounted on the outside of the top end of the oil storage tank 1 through a fixing member 2.

[0158] An outlet valve 5 is arranged at the bottom of the fire extinguishing agent container 3, and the outlet valve 5 is blocked by an automatic valve 10. A fire extinguishing agent release channel 9 is connected below the outlet valve 5. The outlet valve 5 is connected to the inside of the oil storage tank 1 through the fire extinguishing agent release channel 9. After the outlet valve 5 is opened, it can be connected to the inside of the oil storage tank 1.

[0159] The automatic valve 10 is connected to the control system 12 via an explosion-proof connecting line 13. The control system 12 is provided with a temperature detector 11 for performing temperature detection.

[0160] The control system 12 is also equipped with an automatic alarm device, which automatically alarms when the set temperature exceeds the set problem, and warns the control system 12 to start the automatic valve 10 in time.

[0161] The top of the fire extinguishing agent container 3 is provided with a filling port 8 , and the gas fire extinguishing agent 4 is filled inside; the gas fire extinguishing agent 4 can be filled through the filling port 8 .

[0162] A tank inlet hole 6 is provided at the top of the oil storage tank 1 , a breathing valve 7 is provided at one end of the tank inlet hole 6 , and the fire extinguishing agent container 3 is installed at the other end of the tank inlet hole 6 , opposite to the breathing valve 7 .

[0163] Preferably, the fire extinguishing agent container has a capacity of 30 L, is made of stainless steel, has a wall thickness of 3.5 mm, is cylindrical in shape, and has a diameter of 450 mm; the filling pressure of the fire extinguishing agent container 3 is 16 MPa.

[0164] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0165] (1) A proper amount of gaseous fire extinguishing agent 4 is loaded into the fire extinguishing agent container 3, the outlet valve 5 is blocked with an automatic valve 10, and then installed on the top of the oil storage tank 1;

[0166] (2) The temperature detector 11 transmits the detected temperature to the control system 12 in real time. When the ambient temperature of the oil storage tank 1 exceeds 75±2°C and reaches the set temperature threshold, the automatic alarm device will sound an alarm, alerting the control system 12 to start in time. The control system 12 starts the automatic valve 10 to open, thereby opening the outlet valve 5, allowing the gaseous fire extinguishing agent 4 to be released into the space inside the oil storage tank 1 and fill it;

[0167] (3) When the gas fire extinguishing agent 4 fills up the internal space of the oil storage tank 1, the excess gas fire extinguishing agent 4 overflows from the breathing valve 7, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0168] Preferably, the gas fire extinguishing agent used in this embodiment is perfluorohexanone.

[0169] The control system 12 can be controlled by an infrared remote controller, and the automatic valve 10 can be opened or closed by controlling the control system 12 through the infrared remote controller.

[0170] Embodiment 11

[0171] An over-temperature automatic explosion suppression device for an oil storage tank comprises a fire extinguishing agent container 3, wherein the fire extinguishing agent container 3 is mounted on the outside of the top end of an oil storage tank 1 through a fixing member 2.

[0172] An outlet valve 5 is arranged at the bottom of the fire extinguishing agent container 3, and the outlet valve 5 is blocked by an automatic valve 10. A fire extinguishing agent release channel 9 is connected below the outlet valve 5. The outlet valve 5 is connected to the inside of the oil storage tank 1 through the fire extinguishing agent release channel 9. After the outlet valve 5 is opened, it can be connected to the inside of the oil storage tank 1.

[0173] The automatic valve 10 is connected to the control system 12 via an explosion-proof connecting line 13. The control system 12 is provided with a temperature detector 11 for performing temperature detection.

[0174] The control system 12 is also equipped with an automatic alarm device, which automatically alarms when the set temperature exceeds the set problem, and warns the control system 12 to start the automatic valve 10 in time.

[0175] The top of the fire extinguishing agent container 3 is provided with a filling port 8 , and the gas fire extinguishing agent 4 is filled inside; the gas fire extinguishing agent 4 can be filled through the filling port 8 .

[0176] A tank inlet hole 6 is provided at the top of the oil storage tank 1 , a breathing valve 7 is provided at one end of the tank inlet hole 6 , and the fire extinguishing agent container 3 is installed at the other end of the tank inlet hole 6 , opposite to the breathing valve 7 .

[0177] Preferably, the fire extinguishing agent container has a capacity of 20 L, is made of stainless steel, has a wall thickness of 3.0 mm, is cylindrical in shape, and has a diameter of 350 mm; the filling pressure of the fire extinguishing agent container 3 is 14 MPa.

[0178] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0179] (1) A proper amount of gaseous fire extinguishing agent 4 is loaded into the fire extinguishing agent container 3, the outlet valve 5 is blocked with an automatic valve 10, and then installed on the top of the oil storage tank 1;

[0180] (2) The temperature detector 11 transmits the detected temperature to the control system 12 in real time. When the ambient temperature of the oil storage tank 1 exceeds 75±2°C and reaches the set temperature threshold, the automatic alarm device will sound an alarm, alerting the control system 12 to start in time. The control system 12 starts the automatic valve 10 to open, thereby opening the outlet valve 5, allowing the gaseous fire extinguishing agent 4 to be released into the space inside the oil storage tank 1 and fill it;

[0181] (3) When the gas fire extinguishing agent 4 fills up the internal space of the oil storage tank 1, the excess gas fire extinguishing agent 4 overflows from the breathing valve 7, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0182] Preferably, the gas fire extinguishing agent used in this embodiment is heptafluoropropane.

[0183] The control system 12 can be controlled by a remote computer. The control system 12 is controlled by a remote computer to open or close the automatic valve 10.

[0184] Example 12

[0185] like Figure 4 As shown, an automatic explosion suppression device for over-temperature of an oil storage tank includes a fire extinguishing agent container 3, which is installed upside down with an outlet valve 5 at the bottom facing upward. The outlet valve 5 is blocked by an explosion-proof automatic valve 10, and a plurality of fire extinguishing agent release ports 101 are arranged on the side of the automatic valve 10.

[0186] The fire extinguishing agent container 3 contains a gas fire extinguishing agent 4; when the automatic valve 10 is opened, the gas fire extinguishing agent 4 can be released from the fire extinguishing agent release port 101 and spread throughout the internal space of the oil storage tank 1.

[0187] The fire extinguishing agent container 3 is installed inside the top of the oil storage tank 1 through the fixing member 2. The fixing member 2 is a threaded nut commonly used in the prior art, which is easy to install.

[0188] The automatic valve 10 is connected to the control system 12 via an explosion-proof connecting line 13. The control system 12 is provided with a temperature detector 11 for performing temperature detection.

[0189] An automatic alarm device is also installed. When the temperature around the oil storage tank 1 exceeds a set temperature threshold, an automatic alarm is triggered to warn the control system 12 to start the automatic valve 10 in time.

[0190] During installation, the filling port 8 of the fire extinguishing agent container 3 faces downward; the gas fire extinguishing agent 4 can be filled through the filling port 8, and after the filling is completed, the filling port 8 can be sealed to prevent leakage.

[0191] A tank inlet hole 6 is provided at the top of the oil storage tank 1 , a breathing valve 7 is provided at one end of the tank inlet hole 6 , and the fire extinguishing agent container 3 is installed at the other end of the tank inlet hole 6 , opposite to the breathing valve 7 .

[0192] Preferably, the fire extinguishing agent container has a capacity of 20 L, is made of stainless steel, has a wall thickness of 3.5 mm, is cylindrical in shape, and has a diameter of 350 mm; the filling pressure of the fire extinguishing agent container 3 is 14 MPa.

[0193] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0194] (1) A proper amount of gaseous fire extinguishing agent 4 is loaded into the fire extinguishing agent container 3, the outlet valve 5 is blocked with an automatic valve 10, and then installed inside the top of the oil storage tank 1;

[0195] (2) The temperature detector 11 transmits the detected temperature to the control system 12 in real time. When the ambient temperature of the oil storage tank 1 exceeds 75±2°C and reaches the set temperature threshold, the automatic alarm device will sound an alarm, alerting the control system 12 to start in time. The control system 12 starts the automatic valve 10 to open the fire extinguishing agent release port 101, thereby opening the outlet valve 5, so that the gaseous fire extinguishing agent 4 is released into the space inside the oil storage tank 1 and fills it;

[0196] (3) When the gas fire extinguishing agent 4 fills up the internal space of the oil storage tank 1, the excess gas fire extinguishing agent 4 overflows from the breathing valve 7, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0197] Preferably, the gas fire extinguishing agent used in this embodiment is heptafluoropropane.

[0198] The control system 12 can be controlled by a mobile phone APP. The control system 12 is controlled by the mobile phone APP to open or close the fire extinguishing agent release port 101 of the automatic valve 10.

[0199] Example 13

[0200] An automatic explosion suppression device for over-temperature of an oil storage tank comprises a fire extinguishing agent container 3, wherein the fire extinguishing agent container 3 is installed upside down with an outlet valve 5 at the bottom facing upward, and the outlet valve 5 is blocked by an explosion-proof automatic valve 10, and a plurality of fire extinguishing agent release ports 101 are arranged on the side of the automatic valve 10.

[0201] The fire extinguishing agent container 3 contains a gas fire extinguishing agent 4; when the automatic valve 10 is opened, the gas fire extinguishing agent 4 can be released from the fire extinguishing agent release port 101 and spread throughout the internal space of the oil storage tank 1.

[0202] The fire extinguishing agent container 3 is installed inside the top of the oil storage tank 1 through the fixing member 2. The fixing member 2 is a threaded nut commonly used in the prior art, which is easy to install.

[0203] The automatic valve 10 is connected to the control system 12 via an explosion-proof connecting line 13. The control system 12 is provided with a temperature detector 11 for performing temperature detection.

[0204] An automatic alarm device is also installed. When the temperature around the oil storage tank 1 exceeds a set temperature threshold, an automatic alarm is triggered to warn the control system 12 to start the automatic valve 10 in time.

[0205] During installation, the filling port 8 of the fire extinguishing agent container 3 faces downward; the gas fire extinguishing agent 4 can be filled through the filling port 8, and after the filling is completed, the filling port 8 can be sealed to prevent leakage.

[0206] A tank inlet hole 6 is provided at the top of the oil storage tank 1 , a breathing valve 7 is provided at one end of the tank inlet hole 6 , and the fire extinguishing agent container 3 is installed at the other end of the tank inlet hole 6 , opposite to the breathing valve 7 .

[0207] Preferably, the fire extinguishing agent container has a capacity of 30 L, is made of stainless steel, has a wall thickness of 3.0 mm, is cylindrical in shape, and has a diameter of 400 mm; the filling pressure of the fire extinguishing agent container 3 is 16 MPa.

[0208] The above-mentioned explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks comprises the following steps:

[0209] (1) A proper amount of gaseous fire extinguishing agent 4 is loaded into the fire extinguishing agent container 3, the outlet valve 5 is blocked with an automatic valve 10, and then installed inside the top of the oil storage tank 1;

[0210] (2) The temperature detector 11 transmits the detected temperature to the control system 12 in real time. When the ambient temperature of the oil storage tank 1 exceeds 75±2°C and reaches the set temperature threshold, the automatic alarm device will sound an alarm, alerting the control system 12 to start in time. The control system 12 starts the automatic valve 10 to open the fire extinguishing agent release port 101, thereby opening the outlet valve 5, so that the gaseous fire extinguishing agent 4 is released into the space inside the oil storage tank 1 and fills it;

[0211] (3) When the gas fire extinguishing agent 4 fills up the internal space of the oil storage tank 1, the excess gas fire extinguishing agent 4 overflows from the breathing valve 7, thereby achieving the purpose of suppressing the oil and gas fire or explosion inside the oil storage tank.

[0212] Preferably, the gas fire extinguishing agent used in this embodiment is heptafluoropropane.

[0213] The control system 12 can be controlled by a remote computer. The control system 12 is controlled by a remote computer to open or close the fire extinguishing agent release port 101 of the automatic valve 10.

[0214] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application.

[0215] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0216] Other matters not mentioned adopt the common practices in the prior art and will not be described in detail here.

[0217] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An automatic explosion suppression device for oil storage tanks with overtemperature, including a fire extinguishing agent container, characterized in that: An outlet valve is arranged at the bottom of the fire extinguishing agent container, and the outlet valve is blocked by a fusible plug or an automatic valve. After the outlet valve is opened, it can be connected with the inside of the oil storage tank; The fire extinguishing agent container contains a gas fire extinguishing agent; The fire extinguishing agent container is installed on the top of the oil storage tank body through a fixing piece. The top of the oil storage tank is provided with a tank inlet hole. A breathing valve is provided at one end of the tank inlet hole. The fire extinguishing agent container is installed at the other end of the tank inlet hole, opposite to the breathing valve.

2. The oil storage tank over-temperature automatic explosion suppression device according to claim 1 is characterized in that: The volume of the fire extinguishing agent container is 10-30L, the material is stainless steel, the wall thickness is 2.5-3.5mm, the shape is cylindrical, the diameter is 300-450mm, and the height is 300-500mm; the filling pressure of the fire extinguishing agent container is 0-16MPa.

3. The oil storage tank over-temperature automatic explosion suppression device according to claim 2 is characterized in that: The fire extinguishing agent container is installed inside the top end of the oil storage tank body through a fixing piece.

4. The oil storage tank over-temperature automatic explosion suppression device according to claim 2 is characterized in that: The fire extinguishing agent container is installed on the outside of the top of the oil storage tank body through a fixing piece. The top of the fire extinguishing agent container is provided with a filling port, and the outlet valve in the middle of the bottom is connected to the inside of the oil storage tank.

5. The oil storage tank over-temperature automatic explosion suppression device according to claim 4 is characterized in that: The outlet valve of the fire extinguishing agent container is connected to the interior of the oil storage tank through a fire extinguishing agent release channel.

6. The explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks according to any one of claims 1 to 5, characterized in that: The steps include: (1) Fill the fire extinguishing agent container with an appropriate amount of gaseous fire extinguishing agent, plug the outlet valve, and then install it on the top of the oil storage tank; (2) When the ambient temperature around the oil storage tank exceeds a certain threshold, the fusible plug or automatic valve will melt or open, allowing the gaseous fire extinguishing agent to be released into the space inside the oil storage tank and fill it; (3) When the gas fire extinguishing agent fills the internal space of the oil storage tank, the excess gas fire extinguishing agent overflows from the breathing valve, thereby suppressing the explosion of the oil storage tank.

7. The explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks according to claim 6 is characterized in that: The gas fire extinguishing agent is perfluorohexanone or heptafluoropropane.

8. The explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks according to claim 6 is characterized in that: The outlet valve is blocked by a fusible plug, which is made of a fusible alloy composed of three or four metal elements of bismuth, aluminum, tin and cadmium; the melting temperature range of the fusible plug is 70-80°C; the certain threshold is the melting temperature of the fusible plug.

9. The explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks according to claim 6 is characterized in that: The outlet valve is blocked by an automatic valve; a temperature detector is set outside the top of the oil storage tank, next to the fire extinguishing agent container, and the temperature detector is connected to the control system. The control system can be started through a mobile phone APP or remote control.

10. The explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks according to claim 9, characterized in that: The control system sets a temperature threshold, and the temperature threshold range is 70-80°C. When the temperature exceeds the range of the threshold, the control system can be activated to open the automatic valve to release the gas fire extinguishing agent.

11. The explosion suppression method of the over-temperature automatic explosion suppression device for oil storage tanks according to claim 10, characterized in that: The control system is also connected to an alarm device, which automatically sounds an alarm when the temperature exceeds a set threshold.

Images