Emergency disposal mechanism for injecting carbon dioxide under liquid in external floating roof tank

Abstract

This invention discloses a subsurface carbon dioxide fire extinguishing emergency response mechanism for an external floating roof storage tank. It includes a floating roof cover and a central drain pipe located in the middle of the floating roof cover. A lower floating plate is slidably connected to the bottom of the floating roof cover, and an upper floating plate is detachably connected to the lower floating plate at the top of the floating roof cover. The upper floating plate and the central drain pipe are coaxially arranged, and several elastic telescopic supports are evenly distributed circumferentially on its outer periphery. A stop post is fixedly installed on the top of the floating roof cover near the upper floating plate and located at one end of the elastic telescopic supports. In this invention, by setting an upper floating plate, a lower floating plate, elastic telescopic supports, a stop post, and a ring-shaped jet hose on the upper and lower sides of the floating roof cover respectively, the jet hose can be quickly expanded to increase the coverage area when the floating roof cover accidentally falls. The carbon dioxide sprayed from the jet hose through the jet pipe installed on it can quickly fill the space above the oil surface in the storage tank, achieving rapid air isolation and eliminating the risk of combustion and explosion caused by oil vapor evaporation.

Description

Technical Field

[0001] This invention relates to the field of floating roof tank fire protection technology, and in particular to an emergency response mechanism for submerged carbon dioxide fire extinguishing in external floating roof tanks. Background Technology

[0002] Floating roof oil storage tanks are divided into internally floating and externally floating types. The top of the externally floating tank is exposed, and a floating roof cover is installed inside the tank to float above the oil. A sealing component is installed between the floating roof cover and the inner wall of the tank. A central drain pipe is installed in the middle of the floating roof cover, and a short drain pipe is installed on the tank wall. A long hose is placed in the oil, and the hose is connected to the short drain pipe and the central drain pipe to facilitate the drainage of water accumulated on the floating roof cover.

[0003] Currently, external floating storage tanks have the problem of accidental detachment of the floating roof. When the floating roof falls, the oil surface is exposed, and oil vapors are prone to volatilization, posing a risk of deflagration. Therefore, there is an urgent need in the market for an emergency response mechanism that can quickly prevent the volatilization of oil and oil vapors.

[0004] Therefore, this invention proposes an emergency response mechanism for submerged carbon dioxide injection in external floating roof storage tanks. Summary of the Invention

[0005] The purpose of this invention is to provide an emergency response mechanism for submerged carbon dioxide fire extinguishing in external floating roof tanks, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An emergency response mechanism for submerged carbon dioxide fire extinguishing in an external floating roof tank includes a floating roof cover and a central drain pipe located in the middle of the floating roof cover. A lower floating plate is slidably connected to the bottom of the floating roof cover, and an upper floating plate is detachably connected to the lower floating plate at the top of the floating roof cover. The upper floating plate and the central drain pipe are coaxially arranged, and several elastic telescopic supports are evenly distributed circumferentially on their outer peripheral walls. A stop post is fixedly installed on the top of the floating roof cover near the upper floating plate and located at one end of the elastic telescopic supports. A jet hose is threaded through the free end of several elastic telescopic supports. When the jet hose passes around each stop post, the elastic telescopic supports are in a contracted state. When the jet hose detaches from the stop post, the elastic telescopic supports extend, and the jet hose forms a large ring. A jet pipe is fixedly connected to the wall of the jet hose. A short connecting pipe is installed at the top of the central drain pipe, and a connector is installed on the jet hose that connects to the short connecting pipe via an air pipe.

[0008] As a further description of the above technical solution:

[0009] The telescopic support extends in the radial direction of the floating platform. Two connecting piles and a limiting pile located between the two connecting piles are fixedly connected to the end of the telescopic support away from the floating platform.

[0010] As a further description of the above technical solution:

[0011] The elastic telescopic support frame consists of a portal frame, a support spring, and a guide sleeve. One end of the guide sleeve is fixedly connected to the outer peripheral wall of the floating plate. The support spring is fitted inside the guide sleeve. One end of the long rod on the portal frame is fitted inside the guide sleeve and is slidably connected. The bottoms of the connecting pile and the limiting pile are fixedly connected to the short rod on the portal frame.

[0012] As a further description of the above technical solution:

[0013] The outer peripheral wall of the floating plate has a limiting notch located inside the gantry frame and used in conjunction with the stop column, and a coaxial air tube positioning ring is fixedly installed on the top of the floating plate.

[0014] As a further description of the above technical solution:

[0015] A base plate is fixedly connected to the top of the bypass pile, and a gas-driven oil-gas filter box is connected to the top of the base plate. The gas-driven oil-gas filter box is connected by a hose and a connector.

[0016] As a further description of the above technical solution:

[0017] The gas-driven oil-gas filter box includes a filter cylinder and a filter cotton ring. The bottom of the filter cylinder is provided with an integral inner conical shell. An air inlet pipe is fixedly connected to the top of the integral inner conical shell. The outer peripheral wall of the filter cylinder has air inlet holes located at the bottom and evenly distributed around the circumference. The outer peripheral wall of the filter cylinder has air outlet holes located at the top and evenly distributed around the circumference. The filter cotton ring is sleeved on the filter cylinder and is opposite to the air outlet holes.

[0018] As a further description of the above technical solution:

[0019] A connecting pipe is fixedly connected to the middle of the outer wall of the jet pipe. The bottom of the connecting pipe is fixedly connected to the jet hose. Jet holes are opened at both ends of the jet pipe.

[0020] As a further description of the above technical solution:

[0021] The upper end face of the lower floating plate is fixedly connected with guide shafts that are evenly distributed in the circumference. The top of the floating roof is provided with guide holes that slide with the guide shafts. The top of the guide shafts is provided with insertion holes. The bottom of the upper floating plate is fixedly provided with positioning insertion shafts that are inserted into the insertion holes.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. In this invention, by setting an upper floating plate, a lower floating plate, an elastic telescopic frame, a baffle, and a ring-shaped jet hose on the upper and lower sides of the floating roof respectively, the jet hose can be quickly expanded to increase the coverage area when the floating roof accidentally falls. The carbon dioxide sprayed by the jet hose through the jet pipe installed on it can quickly fill the space above the oil surface of the storage tank, achieving rapid air isolation and eliminating the risk of combustion and explosion caused by oil vapor volatilization.

[0024] 2. In this invention, a gas-driven oil-gas filter box is provided, wherein an integrated inner conical shell is provided at the bottom of the gas-driven oil-gas filter box. The gas-driven oil-gas filter box uses carbon dioxide to filter the carbon dioxide gas on the oil surface, thereby reducing the content of oil vapor in the lost carbon dioxide and further reducing the risk of combustion and explosion. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an emergency response mechanism for submerged carbon dioxide fire extinguishing in an external floating roof storage tank, as proposed in this invention.

[0026] Figure 2 for Figure 1 The main view;

[0027] Figure 3 This is a schematic diagram of the structure of the floating roof cover, the baffle column and the central drainage pipe of the emergency response mechanism for submerged carbon dioxide fire extinguishing in an external floating roof tank proposed in this invention.

[0028] Figure 4 for Figure 1 A structural diagram after removing the floating roof, central drainage pipe, and retaining columns;

[0029] Figure 5 This is a schematic diagram of the upper floating plate, lower floating plate, and elastic telescopic support frame of an emergency response mechanism for submerged carbon dioxide fire extinguishing in an external floating roof storage tank, as proposed in this invention.

[0030] Figure 6 This is a schematic diagram of the gas-driven oil and gas filter box and the connecting pile of a submerged carbon dioxide fire extinguishing emergency response mechanism for an external floating roof storage tank proposed in this invention.

[0031] Figure 7 This is a schematic diagram of the gas-driven oil and gas filter box of an emergency response mechanism for submerged carbon dioxide fire extinguishing in an external floating roof tank, as proposed in this invention.

[0032] Legend:

[0033] 1. Floating roof cover; 11. Guide hole; 2. Central drain pipe; 3. Lower floating plate; 31. Guide shaft; 311. Insertion hole; 4. Upper floating plate; 41. Limiting notch; 42. Air pipe positioning ring; 43. Positioning insert shaft; 5. Elastic telescopic support frame; 501. Portal frame; 502. Support spring; 503. Guide sleeve; 51. Circumferential pile; 511. Seat plate; 52. Limiting pile; 6. Stop post; 7. Jet hose; 8. Jet pipe; 81. Connecting pipe; 82. Jet hole; 9. Short pipe; 101. Connector; 102. Air-driven oil and gas filter box; 1021. Filter cylinder; 10211. Integrated inner cone shell; 102111. Air inlet pipe; 10212. Air inlet hole; 10213. Air outlet hole; 1022. Filter cotton ring. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1

[0036] Please see Figure 1-5 An emergency response mechanism for submerged carbon dioxide fire extinguishing in an external floating roof tank includes a floating roof cover 1 and a central drain pipe 2 located in the middle of the floating roof cover 1. The function of the central drain pipe 2 is to drain the water accumulated on the floating roof cover 1 outward. An overflow hole is opened on the outer wall of the central drain pipe 2 above the floating roof cover 1. The bottom of the central drain pipe 2 is connected to a soft drain pipe. A short drain pipe is provided at the bottom of the pipe wall. One end of the short drain pipe is connected to one end of the drain pipe, thereby realizing the discharge of rainwater without affecting the raising and lowering of the floating roof cover 1.

[0037] In this technical solution, a lower floating plate 3 is slidably connected to the bottom of the floating roof 1. Under normal conditions, the lower floating plate 3 is in contact with the oil. An upper floating plate 4 is provided on the top of the floating roof 1 and is detachably connected to the lower floating plate 3. The lower floating plate 3 supports the upper floating plate 4. When the upper floating plate 4 is supported, it is located above the floating roof 1. Specifically, a guide shaft 31 with circumferentially evenly distributed guide shafts is fixedly connected to the upper end face of the lower floating plate 3. A guide hole 11 is opened on the top of the floating roof 1 and slides with the guide shaft 31. An insertion hole 311 is opened on the top of the guide shaft 31. A positioning insertion shaft 43 is fixedly provided on the bottom of the upper floating plate 4 and inserts into the insertion hole 311.

[0038] The floating plate 4 and the central drain pipe 2 are coaxially arranged, and several elastic telescopic supports 5 are evenly distributed circumferentially on their outer peripheral walls. The floating plate 4 is ring-shaped. Both the floating plate 4 and the central drain pipe 2 are located in the middle of the floating roof 1. In this embodiment, there are three elastic telescopic supports 5. A stop post 6 is fixedly arranged on the top of the floating roof 1 near the floating plate 4 and located at one end of the elastic telescopic support 5. The stop post 6 and the elastic telescopic support 5 correspond one-to-one. A jet hose 7 is connected to the free end of several elastic telescopic supports 5. When the jet hose 7 passes around each stop post 6, the elastic telescopic support 5 is in a contracted state. When the jet hose 7 is separated from the stop post 6, the elastic telescopic support 5 is extended, and the jet hose 7 forms a large ring. That is to say, when the elastic telescopic support 5 is contracted, the jet hose 7 forms a small ring. The diameter of the small ring is smaller than that of the large ring. When the jet hose 7 is in the small ring state, it occupies little space and will not interfere with the components above the floating roof 1.

[0039] The telescopic support 5 extends in the radial direction of the upper floating plate 4. Two connecting piles 51 and a limiting pile 52 located between the two connecting piles 51 are fixedly connected to one end of the telescopic support 5 away from the upper floating plate 4. The connecting piles 51 and the limiting pile 52 prevent the extended jet hose 7 from falling off. Specifically, the telescopic support 5 consists of a portal frame 501, a support spring 502, and a guide sleeve 503. One end of the guide sleeve 503 is fixedly connected to the outer peripheral wall of the upper floating plate 4. The support spring 502 is fitted inside the guide sleeve 503. One end of the long rod on the portal frame 501 is fitted inside the guide sleeve 503 and is slidably connected. The bottoms of the connecting piles 51 and the limiting pile 52 are both fixedly connected to the short rod on the portal frame 501.

[0040] When the floating roof 1 falls off accidentally, the lower floating plate 3 will be squeezed by the floating roof 1 and will sink into the oil. At the same time, it will separate from the upper floating plate 4. The upper floating plate 4 will be supported by the oil and float. Meanwhile, the baffle 6 will detach from the jet hose 7. After detaching from the jet hose 7 and being restricted by contact, the elastic telescopic support 5 will extend and expand the jet hose 7 into a large ring.

[0041] A jet pipe 8 is fixedly connected to the wall of the jet hose 7. In this embodiment, there are three sets of jet pipes 8. The three sets of jet pipes 8 are distributed at equal intervals along the jet hose 7. Each set of jet pipes 8 consists of two jet pipes. The function of the jet pipes 8 is to discharge carbon dioxide gas to the oil surface. After the jet hose 7 is enlarged, it can accelerate the filling of carbon dioxide into the space above the oil surface with the jet pipes 8, quickly isolate the air, and prevent oil vapor from evaporating.

[0042] A connecting pipe 81 is fixedly connected to the middle of the outer wall of the aforementioned jet pipe 8. The bottom of the connecting pipe 81 is fixedly connected to the jet hose 7. Jet holes 82 are opened at both ends of the jet pipe 8 to further increase the jet coverage area of ​​the jet pipe 8.

[0043] A short connecting pipe 9 is installed at the top of the central drain pipe 2. A connector 101, which connects to the short connecting pipe 9 via an air pipe, is installed on the jet hose 7. This air pipe is a gas supply pipe. The outer peripheral wall of the floating plate 4 has a limiting notch 41 located within the gantry frame 501 and used in conjunction with the stop post 6. A coaxial air pipe positioning ring 42 is fixedly installed at the top of the floating plate 4. The function of the air pipe positioning ring 42 is to store the surrounding air pipe. It should be noted that a thin flexible hose is fitted inside the aforementioned soft drain pipe. One end of the thin flexible hose is connected to the short connecting pipe 9, and the other end extends out of the drain pipe and connects to the carbon dioxide tanker truck through the vaporizer to achieve carbon dioxide supply.

[0044] Example 2

[0045] Please see Figure 6 and Figure 7 The difference from Embodiment 1 is that a base plate 511 is fixedly connected to the top of the connecting pile 51, and a gas-driven oil-gas filter box 102 is connected to the top of the base plate 511. The gas-driven oil-gas filter box 102 is connected via a hose and a connector 101. The function of the gas-driven oil-gas filter box 102 is to filter oil vapor in carbon dioxide gas and reduce the content of oil vapor in carbon dioxide lost from the oil surface.

[0046] The aforementioned gas-driven oil-gas filter box 102 includes a filter cylinder 1021 and a filter cotton ring 1022. The function of the filter cotton ring 1022 is to filter out oil vapor in carbon dioxide. The bottom of the filter cylinder 1021 is provided with an integral inner conical shell 10211. The filter cylinder 1021 can adopt the structure shown in the figure. The top of the integral inner conical shell 10211 is fixedly connected to an air inlet pipe 102111. The air inlet pipe 102111 is connected through a hose and a connector 101, allowing carbon dioxide gas to enter the filter cylinder 1021. The outer peripheral wall of the filter cylinder 1021 has a positioning opening. An air inlet 10212 is located at the bottom and is evenly distributed circumferentially. This air inlet 10212 is the inlet for carbon dioxide on the oil surface. An air outlet 10213 is located at the top and is evenly distributed circumferentially. The air outlet 10213 is the outlet for carbon dioxide inside the filter cylinder 1021. A filter cotton ring 1022 is fitted on the filter cylinder 1021 and is opposite to the air outlet 10213. When carbon dioxide is discharged, the filter cotton ring 1022 filters oil vapor. Specifically, the filter cotton ring 1022 is fitted on the top of the filter cylinder 1021.

[0047] It should be noted that after carbon dioxide gas enters the filter cartridge 1021, due to the integrated inner conical shell 10211 structure, the carbon dioxide gas will directly pass through the filter cotton ring 1022 and then be discharged from the outlet 10213. The space inside the filter cartridge 1021 corresponding to the inlet 10212 will form a negative pressure. This negative pressure will draw in the carbon dioxide gas around the inlet 10212, pass through the filter cotton ring 1022, and then be discharged from the outlet 10213, thus realizing the air-driven function of the air-driven oil-gas filter box 102.

[0048] Working principle: When the floating roof cover 1 falls accidentally during use, the oil surface is exposed. At the same time, the lower floating plate 3 is squeezed into the oil, the upper floating plate 4 detaches from the lower floating plate 3, the baffle 6 detaches from the jet hose 7, and the elastic telescopic support 5 extends under the push of the support spring 502. The jet hose 7 is expanded and then gas is supplied to the short pipe 9. The gas passes through the connector 101 to deliver carbon dioxide gas into the jet hose 7 and the filter cylinder 1021. The gas in the jet hose 7 quickly fills the oil surface with carbon dioxide gas through the jet pipe 8, isolating the oil surface from the air. The filter cylinder 1021 draws in the carbon dioxide gas on the oil surface and filters and discharges it, reducing the oil vapor content in the overflowed carbon dioxide, effectively and temporarily isolating the oil and air, and reducing the carbon dioxide gas oil vapor content at the tank opening.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A submerged carbon dioxide fire extinguishing emergency response mechanism for an external floating roof tank, comprising a floating roof cover (1) and a central drain pipe (2) located in the middle of the floating roof cover (1), characterized in that, The bottom of the floating roof (1) is slidably connected to a lower floating plate (3). The top of the floating roof (1) is provided with an upper floating plate (4) that is detachably connected to the lower floating plate (3). The upper floating plate (4) and the central drain pipe (2) are coaxially arranged, and several elastic telescopic supports (5) are evenly distributed around its outer periphery. A stop post (6) is fixedly provided on the top of the floating roof (1) near the upper floating plate (4) and located at one end of the elastic telescopic support (5). A jet hose (7) is threaded through the free end of several elastic telescopic supports (5). When the jet hose (7) passes around each stop post (6), the elastic telescopic support (5) is in a contracted state. When the jet hose (7) is separated from the stop post (6), the elastic telescopic support (5) extends, and the jet hose (7) forms a large ring. The pipe wall of the jet hose (7) A jet pipe (8) is fixedly connected to the upper part of the central drain pipe (2). A short pipe (9) is provided at the top of the central drain pipe (2). A connector (101) is provided on the jet hose (7) and connected to the short pipe (9) through an air pipe. A guide shaft (31) with circumferentially evenly distributed is fixedly connected to the upper end face of the lower floating plate (3). A guide hole (11) is opened at the top of the floating top cover (1) and slides with the guide shaft (31). An insertion hole (311) is opened at the top of the guide shaft (31). A positioning insertion shaft (43) is fixedly provided at the bottom of the upper floating plate (4) and inserts into the insertion hole (311). When the floating top cover (1) falls accidentally, the lower floating plate (3) will be squeezed by the floating top cover (1). The lower floating plate (3) will sink into the oil and separate from the upper floating plate (4). The upper floating plate (4) is supported by the oil and is in a floating state.

2. The emergency response mechanism for submerged carbon dioxide fire extinguishing in an external floating roof storage tank according to claim 1, characterized in that, The telescopic support (5) extends in the radial direction of the floating plate (4). Two connecting piles (51) and a limiting pile (52) located between the two connecting piles (51) are fixedly connected to one end of the elastic telescopic support (5) away from the floating plate (4).

3. The emergency response mechanism for submerged carbon dioxide fire extinguishing in an external floating roof storage tank according to claim 2, characterized in that, The elastic telescopic support frame (5) consists of a portal frame (501), a support spring (502) and a guide sleeve (503). One end of the guide sleeve (503) is fixedly connected to the outer peripheral wall of the floating plate (4). The support spring (502) is sleeved inside the guide sleeve (503). One end of the long rod on the portal frame (501) is sleeved inside the guide sleeve (503) and is slidably connected. The bottoms of the connecting pile (51) and the limiting pile (52) are fixedly connected to the short rod on the portal frame (501).

4. The emergency response mechanism for submerged carbon dioxide fire extinguishing in an external floating roof storage tank according to claim 3, characterized in that, The outer peripheral wall of the floating plate (4) is provided with a limiting notch (41) located inside the gantry frame (501) and used in conjunction with the stop post (6). A coaxial air tube positioning ring (42) is fixedly provided on the top of the floating plate (4).

5. The emergency response mechanism for submerged carbon dioxide fire extinguishing in an external floating roof storage tank according to claim 4, characterized in that, The top of the bypass pile (51) is fixedly connected to a base plate (511), and the top of the base plate (511) is connected to a gas-driven oil and gas filter box (102), which is connected by a hose and a connector (101).

6. The emergency response mechanism for submerged carbon dioxide fire extinguishing in an external floating roof storage tank according to claim 5, characterized in that, The gas-driven oil and gas filter box (102) includes a filter cylinder (1021) and a filter cotton ring (1022). The bottom of the filter cylinder (1021) is provided with an integral inner conical shell (10211). An air inlet pipe (102111) is fixedly connected to the top of the integral inner conical shell (10211). The outer peripheral wall of the filter cylinder (1021) is provided with an air inlet hole (10212) located at the bottom and evenly distributed in the circumference. The outer peripheral wall of the filter cylinder (1021) is provided with an air outlet hole (10213) located at the top and evenly distributed in the circumference. The filter cotton ring (1022) is sleeved on the filter cylinder (1021) and is opposite to the air outlet hole (10213).

7. The emergency response mechanism for submerged carbon dioxide fire extinguishing in an external floating roof storage tank according to claim 1, characterized in that, A connecting pipe (81) is fixedly connected to the middle of the outer wall of the jet pipe (8). The bottom of the connecting pipe (81) is fixedly connected to the jet hose (7). Jet holes (82) are provided at both ends of the jet pipe (8).

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