Pressure relief explosion-proof device for safety guarantee of oil depot

Abstract

The utility model discloses a pressure relief explosion-proof device for safety guarantee of an oil depot, which relates to the technical field of oil depot oil discharge and comprises an oil storage tank, a pressure relief valve and a pressure relief valve. The floating assembly comprises a disc and a plurality of buoys, the outer wall of the disc is tightly attached to the inner wall of the oil storage tank and can freely slide up and down, the buoys are distributed below the buoys in an equidistant circumferential array mode, and the outer walls of the buoys are fixedly connected with a plurality of connecting frames. According to the pressure-relief explosion-proof device for oil depot safety guarantee, the buoy floats on the surface of oil under the action of buoyancy, the disc is arranged above the buoy, so that a relatively fixed space is kept between the disc and the surface of the oil, gas volatilized by the oil is in the space, and the gas in the space changes along with the change of the liquid level in actual use of the oil; the disc slides downwards along the inner wall of the oil storage tank, so that the space between the disc and the oil surface is not changed greatly all the time, a large amount of volatile gas is prevented from being gathered due to overlarge space, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil unloading in oil depots, in particular to a pressure relief and explosion-proof device for ensuring the safety of oil depots. Background Art

[0002] Any enterprise or unit used to receive, store and distribute crude oil or crude oil products is called an oil depot. The oil depot is the link for coordinating crude oil production and processing as well as the supply and transportation of refined oil. It is the base for oil storage and supply. For the country, oil depots have important and far-reaching significance in ensuring national defense, promoting social development, and improving people's lives.

[0003] In the prior art, for example, publication number CN221458734U discloses a pressure relief and explosion-proof device for oil depot safety, which includes an oil depot body, the bottom of which is fixedly connected to an oil depot base, a ladder provided on the front side of the oil depot body, and a guardrail provided on the top of the oil depot body; a pressure relief device is provided inside the oil depot body, and the pressure relief device includes a slider, the side of which is slidably connected to the inner wall of the oil depot body. The device cooperates with the extrusion rod, fan blades, and rotating shaft components in the pressure relief device by the upward displacement of the rack, thereby achieving the effect of driving the fan blades to rotate through the rotation of the rotating shaft, thereby accelerating the circulation of air inside the oil depot and thereby accelerating the release of air pressure, which helps to quickly reduce the pressure inside the oil depot and reduce the risk of explosion.

[0004] In the above patent, the pressure relief device of the oil depot is installed at a top position inside the oil depot. However, as the oil level drops, a larger space will be created between the oil surface and the pressure relief device. A large amount of volatile gas will gather in this larger space and cannot be discharged in time, which increases the overall compressive load of the oil depot. Moreover, if an accident occurs, a large amount of gas will cause a strong explosion, posing a certain safety hazard. For this reason, the utility model provides a pressure relief and explosion-proof device for oil depot safety protection. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a pressure relief and explosion-proof device for oil depot safety, which solves the problem that as the oil level drops, a large space will be created between the oil surface and the pressure relief device. A large amount of volatile gas will accumulate in this large space and cannot be discharged in time, increasing the overall compressive load of the oil depot. In addition, if an accident occurs, a large amount of gas will cause a strong explosion, posing certain safety hazards.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A pressure relief and explosion-proof device for oil depot safety protection, comprising:

[0007] Oil storage tank, used to store oil;

[0008] A floating assembly comprising a disc and a plurality of buoys, wherein the outer wall of the disc is in close contact with the inner wall of the oil storage tank and can slide freely up and down, and the plurality of buoys are distributed below the buoys in an equidistant circular array, and the outer wall of the buoy is fixedly connected to a plurality of connecting frames, and the connecting frames are fixedly mounted on the bottom end of the disc;

[0009] A limiting component is provided inside the oil storage tank and is used to limit the floating component;

[0010] The pressure relief assembly is arranged outside the oil storage tank and is used to discharge the pressure inside the oil storage tank.

[0011] Preferably, a plurality of vent holes are opened through the top of the oil storage tank, a fixed pipe is fixedly installed on the outer wall of the oil storage tank, one end of the fixed pipe passes through the outer wall of the oil storage tank and extends to the inside, and a hose is fixedly connected between the top of the disc at one end of the fixed pipe.

[0012] Preferably, the limit assembly includes a limit rod and a limit ring, and the number of the limit rods is set to be multiple. The outer wall of the limit rod slides through the end of the disc, and the top and bottom ends of the limit rod are respectively fixed on the top surface and the bottom surface of the oil storage tank. The limit ring is fixedly installed on the inner wall of the oil storage tank, and the limit ring is arranged above the disc to limit the upward movement of the disc on the inner wall of the oil storage tank.

[0013] Preferably, the pressure relief assembly includes a pressure relief cylinder installed at the bottom end of the fixed tube through a flange plate, a piston is provided on the inner wall of the pressure relief cylinder, the outer wall of the piston is close to the inner wall of the pressure relief cylinder and can slide up and down, the bottom end of the piston is fixedly connected to a sliding rod, the outer wall of the sliding rod slides through the inner bottom surface of the pressure relief cylinder and extends downward, the bottom end of the sliding rod is fixedly connected to a limiting block, the top surface of the limiting block contacts the bottom surface of the pressure relief cylinder, and is used to limit the upward travel of the piston on the inner wall of the pressure relief cylinder, and the outer sleeve of the sliding rod is provided with a spring, the top and bottom ends of the spring are fixedly connected to the bottom end of the piston and the inner bottom surface of the oil storage tank respectively.

[0014] Preferably, the outer wall of the pressure relief cylinder is fixedly connected to a pressure relief pipe, the outer wall of the pressure relief pipe is fixedly sleeved with a threaded pipe, and a filter element is placed inside the threaded pipe.

[0015] Preferably, a threaded cover is threadedly sleeved on the outer wall of the threaded tube, and an air outlet is formed through one end of the threaded cover.

[0016] Beneficial effects

[0017] The utility model provides a pressure relief and explosion-proof device for oil depot safety. Compared with the existing technology, it has the following advantages:

[0018] (1) The oil depot safety protection pressure relief explosion-proof device floats on the surface of the oil liquid due to the buoyancy of the float. Since the disc is set above the float, the disc and the oil liquid surface maintain a relatively fixed space, and the volatile gas of the oil liquid is in this space. As the oil level changes in actual use, the disc slides downward along the inner wall of the oil storage tank, so that the space between the disc and the oil liquid surface will not change significantly, thereby avoiding the accumulation of a large amount of volatile gas due to excessive space and reducing safety hazards.

[0019] (2) The oil depot safety protection pressure relief and explosion-proof device ensures that the disc can only slide stably in the vertical direction through the limit rod and will not deviate. When the disc rises to a certain height, the limit ring will prevent it from moving further upward, thereby limiting the disc's upward stroke. In addition, when the gas discharged through the pressure relief pipe passes through the filter element, it can effectively filter out toxic components in the gas, ensuring that the discharged gas is relatively pure, reducing pollution to the environment and potential harm to personnel, thereby further reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional appearance of the utility model;

[0021] Figure 2 This is a partial cross-sectional view of the oil storage tank of the utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional appearance of the floating component of the present invention;

[0023] Figure 4 This is a schematic diagram of the three-dimensional appearance of the pressure relief component of the present utility model.

[0024] In the figure: 1. Oil storage tank; 11. Vent; 12. Fixed pipe; 2. Floating assembly; 21. Disc; 22. Float; 23. Connecting frame; 3. Limit assembly; 31. Limit rod; 32. Limit ring; 4. Hose; 5. Pressure relief assembly; 51. Pressure relief cylinder; 52. Piston; 53. Sliding rod; 54. Spring; 55. Limit block; 56. Pressure relief pipe; 57. Threaded pipe; 58. Threaded cover; 59. Air outlet; 510. Filter element. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] This utility model provides two technical solutions:

[0027] Figures 1-4 The first embodiment is shown: a pressure relief and explosion-proof device for oil depot safety, comprising:

[0028] Oil storage tank 1, used for storing oil;

[0029] The floating assembly 2 includes a disc 21 and a plurality of buoys 22. The outer wall of the disc 21 is in close contact with the inner wall of the oil storage tank 1 and can slide freely up and down. The plurality of buoys 22 are distributed below the buoys 22 in an equidistant circular array. The outer wall of the buoys 22 is fixedly connected to a plurality of connecting frames 23. The connecting frames 23 are fixedly mounted on the bottom end of the disc 21. The connecting frames 23 serve to connect the buoys 22 and the disc 21 to ensure the stability of the entire floating assembly 2.

[0030] The limiting component 3 is arranged inside the oil storage tank 1 and is used to limit the floating component 2;

[0031] The pressure relief assembly 5 is arranged outside the oil storage tank 1 and is used to discharge the internal pressure of the oil storage tank 1 .

[0032] A plurality of vent holes 11 are provided through the top of the oil storage tank 1, and a fixed pipe 12 is fixedly installed on the outer wall of the oil storage tank 1. One end of the fixed pipe 12 passes through the outer wall of the oil storage tank 1 and extends to the interior. A hose 4 is fixedly connected between the top of the disc 21 at one end of the fixed pipe 12, and the hose 4 can adapt to the lifting and lowering of the disc 21 so that the disc 21 is always connected to the fixed pipe 12.

[0033] The limiting assembly 3 includes a limiting rod 31 and a limiting ring 32. The number of limiting rods 31 is set to be multiple. The outer wall of the limiting rod 31 slides through the end of the disc 21. The top and bottom ends of the limiting rod 31 are respectively fixed to the top surface and the bottom surface of the oil storage tank 1. The limiting ring 32 is fixedly installed on the inner wall of the oil storage tank 1, and the limiting ring 32 is arranged above the disc 21 to limit the upward movement of the disc 21 on the inner wall of the oil storage tank 1. The limiting rod 31 ensures that the disc 21 can only slide stably in the vertical direction and will not deviate. When the disc 21 rises to a certain height, the limiting ring 32 will prevent it from continuing to move upward, thereby limiting the rising stroke of the disc 21.

[0034] Figures 1-4The second embodiment is shown, which mainly differs from the first embodiment in that the pressure relief assembly 5 includes a pressure relief cylinder 51 installed at the bottom end of the fixed pipe 12 through a flange, and a piston 52 is provided on the inner wall of the pressure relief cylinder 51. When the internal pressure of the oil storage tank 1 increases, the gas pushes the piston 52 to move downward to achieve the pressure relief function. The outer wall of the piston 52 is close to the inner wall of the pressure relief cylinder 51 and can slide up and down. The bottom end of the piston 52 is fixedly connected to a sliding rod 53, and the outer wall of the sliding rod 53 slides through the inner bottom surface of the pressure relief cylinder 51 and extends downward. The bottom end of the sliding rod 53 is fixedly connected to a limiting block 55, and the top surface of the limiting block 55 contacts the bottom surface of the pressure relief cylinder 51, which is used to limit the upward travel of the piston 52 on the inner wall of the pressure relief cylinder 51. The sliding rod 53 moves with the piston 52, and the limiting block 55 at the bottom end limits the upward travel of the piston 52 on the inner wall of the pressure relief cylinder 51, ensuring the stability of the movement of the piston 52. The sleeve is provided with a spring 54, the top and bottom ends of the spring 54 are fixedly connected to the bottom end of the piston 52 and the inner bottom surface of the oil storage tank 1 respectively. The spring 54 is compressed when the pressure increases, and the elastic restoring force pushes the piston 52 upward when the pressure decreases, and returns to the initial position to prepare for the next pressure relief. The outer wall of the pressure relief cylinder 51 is fixedly connected to a pressure relief pipe 56, and the outer wall of the pressure relief pipe 56 is fixedly sleeved with a threaded pipe 57. A filter element 510 is placed inside the threaded pipe 57, and a threaded cover 58 is threadedly sleeved on the outer wall of the threaded pipe 57. An air outlet 59 is opened at one end of the threaded cover 58. The toxic components in the exhaust gas can be effectively filtered out through the filter element 510 to ensure that the exhaust gas is relatively pure, reducing pollution to the environment and potential harm to personnel. The threaded cover 58 is removed from the threaded pipe 57 to facilitate the replacement and maintenance of the filter element 510, and the gas can be discharged smoothly through the air outlet 59.

[0035] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0036] When oil is stored in the oil storage tank 1, the float 22 floats on the surface of the oil due to the buoyancy. Since the disc 21 is located above the disc 21, the disc 21 and the oil surface maintain a relatively fixed space, and the volatilized gas of the oil is in this space. As the oil level changes during actual use, the disc 21 slides downward along the inner wall of the oil storage tank 1, so that the space between the disc 21 and the oil surface does not change significantly, thereby avoiding the accumulation of a large amount of volatilized gas due to excessive space, reducing safety hazards. When the volatilized gas of the oil accumulates to a certain extent, the pressure increases, and the high-pressure gas will It passes through the hose 4 and the fixed tube 12 in turn and enters the pressure relief cylinder 51, pushing the piston 52 downward and compressing the spring 54 at the same time. When the piston 52 is pushed down to a certain extent by the gas, the gas in the pressure relief cylinder 51 is discharged through the pressure relief pipe 56. When the pressure decreases, the elastic restoring force of the spring 54 pushes the piston 52 to move upward and return to its initial position. The gas discharged through the pressure relief pipe 56 can effectively filter the toxic components in the gas when passing through the filter element 510, ensuring that the discharged gas is relatively pure, reducing pollution to the environment and potential harm to personnel, thereby further reducing safety hazards.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure relief and explosion-proof device for oil depot safety, characterized in that: include: An oil storage tank (1), used for storing oil; A floating assembly (2), the floating assembly (2) comprising a disc (21) and a plurality of buoys (22), the outer wall of the disc (21) being in close contact with the inner wall of the oil storage tank (1) and being able to slide freely up and down, the plurality of buoys (22) being distributed below the buoys (22) in an equidistant circular array, the outer walls of the buoys (22) being fixedly connected to a plurality of connecting frames (23), the connecting frames (23) being fixedly mounted on the bottom end of the disc (21); A limiting component (3) is arranged inside the oil storage tank (1) and is used to limit the floating component (2); The pressure relief assembly (5) is arranged outside the oil storage tank (1) and is used to discharge the internal pressure of the oil storage tank (1).

2. The pressure relief and explosion-proof device for oil depot safety according to claim 1, characterized in that: The top of the oil storage tank (1) is provided with a plurality of vent holes (11), and a fixed pipe (12) is fixedly installed on the outer wall of the oil storage tank (1). One end of the fixed pipe (12) passes through the outer wall of the oil storage tank (1) and extends to the inside. A hose (4) is fixedly connected between the top of the disc (21) at one end of the fixed pipe (12).

3. The pressure relief and explosion-proof device for oil depot safety according to claim 1, characterized in that: The limiting assembly (3) comprises a limiting rod (31) and a limiting ring (32). The limiting rods (31) are provided in a plurality. The outer wall of the limiting rod (31) slides through the end of the disc (21). The top and bottom ends of the limiting rod (31) are respectively fixed on the inner top surface and inner bottom surface of the oil storage tank (1). The limiting ring (32) is fixedly mounted on the inner wall of the oil storage tank (1). The limiting ring (32) is arranged above the disc (21) and is used to limit the amount of travel of the disc (21) moving upward on the inner wall of the oil storage tank (1).

4. The pressure relief and explosion-proof device for oil depot safety according to claim 2, characterized in that: The pressure relief assembly (5) includes a pressure relief cylinder (51) mounted on the bottom end of the fixed tube (12) through a flange. A piston (52) is provided on the inner wall of the pressure relief cylinder (51). The outer wall of the piston (52) is tightly attached to the inner wall of the pressure relief cylinder (51) and can slide up and down. The bottom end of the piston (52) is fixedly connected to a slide rod (53). The outer wall of the slide rod (53) slides through the inner bottom surface of the pressure relief cylinder (51) and extends downward. The bottom end of the slide rod (53) is fixedly connected to a limit block (55). The top surface of the limit block (55) contacts the bottom surface of the pressure relief cylinder (51) and is used to limit the amount of upward movement of the piston (52) on the inner wall of the pressure relief cylinder (51). The outer sleeve of the slide rod (53) is provided with a spring (54). The top and bottom ends of the spring (54) are fixedly connected to the bottom end of the piston (52) and the inner bottom surface of the oil storage tank (1) respectively.

5. The pressure relief and explosion-proof device for oil depot safety according to claim 4, characterized in that: The outer wall of the pressure relief cylinder (51) is fixedly connected to a pressure relief pipe (56), the outer wall of the pressure relief pipe (56) is fixedly sleeved with a threaded pipe (57), and a filter element (510) is placed inside the threaded pipe (57).

6. The pressure relief and explosion-proof device for oil depot safety according to claim 5, characterized in that: The outer wall of the threaded tube (57) is threadedly sleeved with a threaded cover (58), and one end of the threaded cover (58) is penetrated by an air outlet (59).

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