A petrochemical storage tank with a leak protection structure

Abstract

The application belongs to the technical field of petrochemical storage tanks, and particularly relates to a petrochemical storage tank with a leakage protection structure, which comprises a tank body, a material pipe arranged on the tank body, and a cover body used for closing the material pipe; a sealing structure and a detection mechanism are arranged on the cover body, the sealing structure comprises a sealing ring and a first elastic member, two ends of the first elastic member are respectively connected with the sealing ring and the cover body, the detection mechanism comprises a first mounting block movably arranged on the cover body, in the process that the cover body is connected with the material pipe, the first elastic member is compressed after the sealing ring is in contact with the material pipe, when the cover body, the sealing ring and the material pipe are tightly matched, the sealing ring extrudes the first mounting block, so that part of the first mounting block is stretched out from the outer surface of the cover body. The application realizes the functions of improving the sealing performance of the material pipe and facilitating the operation personnel to detect the connection state of the cover body and the material pipe, and solves the problem that the existing cover body cannot intuitively detect the installation condition when the installation is not tight, thereby avoiding leakage.

Description

Technical Field

[0001] This invention relates to the field of petrochemical storage tank technology, and more specifically to a petrochemical storage tank with a leakage protection structure. Background Technology

[0002] Petrochemical storage tanks, as indispensable and crucial equipment in the petroleum and chemical industry, are primarily used to store various liquid petrochemical products, such as crude oil, refined oil products, liquefied petroleum gas, and chemical raw materials. When transporting petrochemical products through these tanks, leakage must be minimized, especially with toxic chemical raw materials. Due to the high structural strength of petrochemical storage tanks, leaks typically occur at the pipe inlets, necessitating the installation of leak-proof structures at the material feed pipes.

[0003] To address this issue, Chinese patent CN220466427U discloses a petrochemical storage tank with a leakage protection structure. This tank utilizes a buffer assembly, employing the mutual compression between a first spring and two rubber balls to cushion the tank's shaking. This allows the tank to quickly return to its original position, reducing the amplitude of shaking, improving stability, and preventing valves and bolts from loosening due to vibrations from transport vehicles, thus ensuring a tight seal. Furthermore, by incorporating a discharge assembly, during sealing, the sealing cover is first installed at the lower end of the discharge pipe. Then, the operator pulls the movable disc towards the fixed plate, compressing the second spring. Next, the sliding rod rotates, engaging with the limiting hole. The movable disc is then released, and the elastic force generated by the second spring pushes it downwards, causing it to contact the fixed plate. This further secures the sealing cover, preventing it from loosening and ensuring a tight seal, thus further improving the tank's airtightness.

[0004] However, existing sealing structures all require manual installation. If the operator fails to tighten the cover or install the sealing structure properly, leakage will not occur immediately after installation. Therefore, the installation status cannot be visually inspected. During transportation, leakage will occur if the structure is subjected to vibration or shaking. Summary of the Invention

[0005] To address the aforementioned issues, a petrochemical storage tank with a leakage protection structure is provided. Through its sealing structure and detection mechanism, it solves the problem that existing covers cannot be visually inspected when they are not tightly installed, which can lead to leaks.

[0006] To address the problems of existing technologies, this invention provides a petrochemical storage tank with a leakage protection structure, comprising a tank body, a material pipe disposed on the tank body, and a cover for sealing the material pipe; the cover is provided with a sealing structure and a detection mechanism, the sealing structure comprising a sealing ring and a first elastic element, the two ends of the first elastic element being connected to the sealing ring and the cover respectively, and the detection mechanism comprising a first mounting block movably disposed on the cover; during the connection between the cover and the material pipe, the first elastic element is compressed after the sealing ring contacts the material pipe; when the cover, sealing ring, and material pipe are all tightly fitted, the sealing ring squeezes the first mounting block, causing a portion of the first mounting block to protrude from the outer surface of the cover.

[0007] Preferably, the outer ring of the cover is fitted with a sealing sleeve for sealing the connection position of the cover, sealing ring and material tube when the cover, sealing ring and material tube are tightly fitted.

[0008] Preferably, the cover is provided with a reset component for controlling the reset of the sealing sleeve, and the sealing sleeve has a notch that mates with the first mounting block. When the notch of the sealing sleeve mates with the first mounting block and the first mounting block is in the extended state, the first mounting block restricts the reset of the sealing sleeve.

[0009] Preferably, the cover is provided with a mounting ring, the first mounting block is slidably mounted on the mounting ring, and the mounting ring is provided with a fourth elastic element, the two ends of the fourth elastic element being connected to the first mounting block and the mounting ring respectively.

[0010] Preferably, guide grooves are provided on the inner side of the sealing sleeve and the outer side of the mounting ring. The reset assembly includes a first fixing block, a second fixing block and a third elastic element. The first fixing block and the second fixing block are respectively disposed on the sealing sleeve and the mounting ring. The two ends of the third elastic element are respectively connected to the first fixing block and the second fixing block, and the first fixing block and the second fixing block are slidably engaged with the guide grooves on the mounting ring and the sealing sleeve.

[0011] Preferably, the control component includes a second mounting block and a second elastic member; the second mounting block is slidably mounted on the sealing ring, and the two ends of the second elastic member are respectively connected to the sealing ring and the second mounting block.

[0012] Preferably, the cover is provided with a connecting component, which includes a threaded sleeve. The outer ring of the threaded sleeve has an external thread, and the inner ring of the material tube has an internal thread that mates with the threaded sleeve.

[0013] Preferably, the sealing ring is provided with a guide rod, which slides with the cover body, and the top of the guide rod is provided with a limiting ring.

[0014] Preferably, the feed tube is equipped with a removable sealing ring.

[0015] Preferably, a rotating handle is installed on the cover.

[0016] The advantages of this invention compared to the prior art are: 1. This invention improves the sealing performance of the material pipe by using a tank body, a cover, a sealing structure, and a detection mechanism. This allows operators to easily check the connection status between the cover and the material pipe, thus avoiding the situation where the cover is not tightly connected to the material pipe during installation. This solves the problem that existing covers cannot be visually inspected when they are not tightly installed, which can lead to leakage.

[0017] 2. This invention achieves automatic detection of the cover's installation status by using a reset component and a notch in the sealing sleeve, through the engagement of the first mounting block with the sealing sleeve. If the cover and the material pipe are not tightly connected, the sealing ring cannot push out the first mounting block, thus preventing the first mounting block from restricting the sealing sleeve's reset. Furthermore, during installation, the operator must maintain downward pressure on the sealing sleeve. Once the operator releases the pressure, the sealing sleeve will reset under the drive of the reset component until the first mounting block pops out and engages with the notch in the sealing sleeve. Only then can the operator release the sealing sleeve, thereby preventing improper installation by the operator. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a petrochemical storage tank with a leakage protection structure.

[0019] Figure 2 This is a three-dimensional schematic diagram of the connection process between the feed pipe and the cover in a petrochemical storage tank with a leakage protection structure.

[0020] Figure 3 This is a three-dimensional schematic diagram of the material pipe and cover of a petrochemical storage tank with a leakage protection structure after they are tightly fitted together.

[0021] Figure 4 This is a three-dimensional exploded view of the feed pipe and cover in a petrochemical storage tank with a leakage protection structure.

[0022] Figure 5 This is a three-dimensional exploded diagram of a sealing ring in a petrochemical storage tank with a leakage protection structure.

[0023] Figure 6 yes Figure 5 A magnified view of a portion of point A in the middle.

[0024] Figure 7 This is a three-dimensional exploded diagram of the sealing sleeve and mounting ring in a petrochemical storage tank with a leakage protection structure.

[0025] Figure 8 yes Figure 7 A magnified view of a portion of point B in the middle.

[0026] Figure 9This is a three-dimensional cross-sectional view of the cover and detection mechanism of a petrochemical storage tank with a leakage protection structure when the first mounting block and the second mounting block are in contact.

[0027] Figure 10 yes Figure 9 A magnified view of a portion of point C.

[0028] The diagram is labeled as follows: 1-Tank body; 11-Feed pipe; 12-Sealing ring; 2-Cover body; 21-Connecting assembly; 211-Threaded sleeve; 212-Rotating handle; 3-Sealing structure; 31-Sealing ring; 311-Guide rod; 3111-Limiting ring; 312-Mounting groove; 313-Limiting piece; 32-Fourth elastic element; 33-Sealing sleeve; 331-Notch; 34-Reset assembly; 341-Guide groove; 342-First fixing block; 343-Second fixing block; 344-Third elastic element; 4-Detection mechanism; 41-First mounting block; 42-Control assembly; 421-Second mounting block; 422-Second elastic element; 43-Mounting ring; 431-First elastic element. Detailed Implementation

[0029] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figures 1-5 A petrochemical storage tank with a leakage protection structure includes a tank body 1, a material pipe 11 disposed on the tank body 1, and a cover 2 for sealing the material pipe 11. The cover 2 is provided with a sealing structure 3 and a detection mechanism 4. The sealing structure 3 includes a sealing ring 31 and a first elastic element 431. The two ends of the first elastic element 431 are respectively connected to the sealing ring 31 and the cover 2. The detection mechanism 4 includes a first mounting block 41 movably disposed on the cover 2. During the connection between the cover 2 and the material pipe 11, the first elastic element 431 is compressed after the sealing ring 31 contacts the material pipe 11. When the cover 2, the sealing ring 31 and the material pipe 11 are all tightly fitted, the sealing ring 31 squeezes the first mounting block 41, so that part of the first mounting block 41 protrudes from the outer surface of the cover 2.

[0031] This invention, through a tank body 1, a cover 2, a sealing structure 3, and a detection mechanism 4, achieves both improved sealing at the material pipe 11 and convenient operator inspection of the connection status between the cover 2 and the material pipe 11. This avoids situations where the cover 2 is not tightly connected to the material pipe 11 during installation, solving the problem of leakage caused by the inability to visually inspect the installation status when the cover 2 is not tightly installed. The cover 2 and the material pipe 11 are connected by bolts or by their own threads. As a first embodiment of the detection mechanism 4, a bevel is formed on the first mounting block 41 for engaging with the sealing ring 31. This bevel is not shown in the figure. When the sealing ring 31 contacts the bevel of the first mounting block 41, it presses against the first mounting block 41, pushing it outwards from the cover 2 into an extended state.

[0032] When installing the cover 2, the operator places the cover 2 onto the feed pipe 11 of the tank 1. As the cover 2 approaches the opening of the feed pipe 11, the sealing ring 31, under the elastic force of the first elastic element 431, will first contact the opening of the feed pipe 11 and then be obstructed and stop moving. As the cover 2 continues to approach the feed pipe 11, the first elastic element 431 contracts under pressure, reducing the distance between the sealing ring 31 and the cover 2. When the sealing ring 31 is relatively close to the cover 2, it squeezes the first mounting block 41, pushing the first mounting block 41 away from the axis of the cover 2. The movement causes part of the first mounting block 41 to extend from the outer surface of the cover 2. When the operator feels a sudden increase in installation resistance and observes the extended state of the first mounting block 41, it indicates that the cover 2, the sealing ring 31, and the material tube 11 are tightly fitted, thus ensuring that the cover 2 is installed in place. Furthermore, the supporting and sealing effect of the sealing ring 31 further prevents leakage at the connection between the cover 2 and the material tube 11. Moreover, the extended state of the first mounting block 41 allows for quick observation of the installation status of the cover 2, preventing leakage caused by improper installation.

[0033] Reference Figure 3 The outer ring of the cover 2 is fitted with a sealing sleeve 33 for sealing the connection position of the cover 2, sealing ring 31 and material tube 11 when the cover 2, sealing ring 31 and material tube 11 are tightly fitted.

[0034] The present invention achieves the function of further improving the sealing performance of the connection position between the cover 2, the sealing ring 31 and the material tube 11 through the sealing sleeve 33. The inner bottom of the sealing sleeve 33 is provided with an annular rubber ring. When the cover 2 is fully installed on the material pipe 11, the cover 2, sealing ring 31 and material pipe 11 fit tightly. Then, when the first mounting block 41 is observed to have extended, it indicates that the cover 2, sealing ring 31 and material pipe 11 fit well. Then, the operator slides the sealing sleeve 33, which covers the connection position of the cover 2, sealing ring 31 and material pipe 11, and protects the cover 2, sealing ring 31 and material pipe 11, reducing wear and ensuring the tight fit between the cover 2, sealing ring 31 and material pipe 11. In addition, the annular rubber ring on the sealing sleeve 33 further improves the sealing performance at the connection between the cover 2, sealing ring 31 and material pipe 11, reducing the risk of leakage at the connection between the cover 2, sealing ring 31 and material pipe 11.

[0035] Reference Figure 3 The cover 2 is provided with a reset component 34 for controlling the reset of the sealing sleeve 33, and the sealing sleeve 33 is provided with a notch 331 that cooperates with the first mounting block 41. When the notch 331 of the sealing sleeve 33 cooperates with the first mounting block 41 and the first mounting block 41 is in the extended state, the first mounting block 41 restricts the reset of the sealing sleeve 33.

[0036] This invention achieves the function of automatically detecting the installation status of the cover 2 by means of the reset component 34 and the notch 331 on the sealing sleeve 33, through the engagement of the first mounting block 41 with the sealing sleeve 33. When installing the cover 2, the operator first slides the sealing sleeve 33 down, maintaining downward pressure to prevent the sealing sleeve 33 from resetting under the drive of the reset component 34. When the cover 2, sealing ring 31, and material tube 11 are tightly engaged, the sealing ring 31 presses against the first mounting block 41, causing the first mounting block 41 to extend. The first mounting block 41 then engages with the notch 331 of the sealing sleeve 33 to restrict the movement of the sealing sleeve 33, preventing it from resetting under the drive of the reset component 34. Once the cover 2 is engaged with the material tube 11... If the seal ring 31 is not tight, it will be unable to push out the first mounting block 41, and thus the first mounting block 41 will not be able to restrict the resetting of the sealing sleeve 33. During the installation process, the operator needs to maintain downward pressure on the sealing sleeve 33 at all times. Once the operator releases the push on the sealing sleeve 33, the sealing sleeve 33 will be reset under the drive of the resetting component 34 until the first mounting block 41 pops out and engages with the notch 331 of the sealing sleeve 33. Only then can the operator release the sealing sleeve 33, thereby avoiding the situation where the operator does not install it properly.

[0037] Reference Figure 3 , Figure 7 and Figure 8The cover 2 is provided with an installation ring 43. The first installation block 41 is slidably installed on the installation ring 43. The installation ring 43 is provided with a fourth elastic element 32. The two ends of the fourth elastic element 32 are respectively connected to the first installation block 41 and the installation ring 43.

[0038] This invention achieves the function of controlling the reset of the first mounting block 41 through the mounting ring 43 and the fourth elastic element 32. To prevent the first mounting block 41 from being in an extended state without being compressed, thus affecting the operator's judgment, the fourth elastic element 32 is provided to control the reset of the first mounting block 41. This ensures that the first mounting block 41 is in a reset state, retracted into the mounting ring 43, unless subjected to external force other than the elastic force of the fourth elastic element 32. It can only be in an extended state when the first mounting block 41 is compressed by the sealing ring 31. Although the cooperation between the sealing sleeve 33 and the cover 2 provides some reset effect for the first mounting block 41, it cannot control the first mounting block 41 to actively reset. During the installation of the cover 2, if the sealing sleeve 33 is in a depressed state, the first mounting block 41 will be in a free state, and thus may extend on its own under external force. Therefore, the fourth elastic element 32 is provided to control the active reset of the first mounting block 41, improving the accuracy of the feedback on the installation status of the cover 2 regarding the extension and retraction of the first mounting block 41.

[0039] Reference Figure 3 and Figure 7 The inner side of the sealing sleeve 33 and the outer side of the mounting ring 43 are both provided with guide grooves 341. The reset assembly 34 includes a first fixing block 342, a second fixing block 343 and a third elastic element 344. The first fixing block 342 and the second fixing block 343 are respectively disposed on the sealing sleeve 33 and the mounting ring 43. The two ends of the third elastic element 344 are respectively connected to the first fixing block 342 and the second fixing block 343, and the first fixing block 342 and the second fixing block 343 are respectively slidably engaged with the guide grooves 341 on the mounting ring 43 and the sealing sleeve 33.

[0040] The present invention realizes the function of controlling the resetting of the sealing sleeve 33 through the guide groove 341, the first fixing block 342, the second fixing block 343 and the third elastic element 344. When the sliding sealing sleeve 33 is in motion, the first fixing block 342 and the second fixing block 343 slide in cooperation with the mounting ring 43 and the guide groove 341 on the sealing sleeve 33, respectively, to guide the sealing sleeve 33. The guide groove 341 allows the sealing sleeve 33 to rotate synchronously with the cover 2, reducing unnecessary rotation between the sealing sleeve 33 and the cover 2, thereby improving the sealing performance at the connection between the sealing sleeve 33 and the cover 2. At the same time, it ensures that the third elastic element 344 always keeps its axis in a straight line, thus providing stable elastic force. When the sealing sleeve 33 separates from the first mounting block 41, it can actively reset. During the installation process, the extension of the first mounting block 41 maintains the limiting effect on the sealing sleeve 33. Once the first mounting block 41 retracts during the installation process, the sealing sleeve 33 will automatically reset, so that the operator can check the installation status of the cover 2.

[0041] Reference Figures 4-6 , Figure 9 and Figure 10 The control component 42 includes a second mounting block 421 and a second elastic member 422; the second mounting block 421 is slidably mounted on the sealing ring 31, and the two ends of the second elastic member 422 are respectively connected to the sealing ring 31 and the second mounting block 421.

[0042] As a second embodiment of the detection mechanism 4, the present invention realizes the function of pushing the first mounting block 41 through the second mounting block 421 and the second elastic member 422. The sealing ring 31 has a mounting groove 312 for receiving the second mounting block 421, and the mounting groove 312 has a limiting piece 313 for limiting the movement range of the second mounting block 421; the elastic force of the fourth elastic member 32 is greater than the elastic force of the second elastic member 422. When the first mounting block 41 contacts the second mounting block 421, the second mounting block can overcome the elastic force of the fourth elastic member 32 and push the first mounting block 41 out under the action of the elastic force of the second elastic member 422. The second mounting block 421 has an arc surface. When the second mounting block 421 contacts the mounting ring 43, the mounting ring 43 squeezes the arc surface of the second mounting block 421 and overcomes the elastic force of the second elastic member 422 to press the second mounting block 421 into the mounting groove 312. When installing the cover 2, since the material pipe 11 and the cover 2 are usually large in size, it is difficult for a single person to complete the installation of the cover 2 if the operator needs to keep pressing down on the sealing sleeve 33 at all times. Therefore, a combination of the second mounting block 421 and the second elastic element 422 is set to push the first mounting block 41. Thus, during the installation process, the operator does not need to slide the sealing sleeve 33 down first. Although the sealing sleeve 33 will restrict the extension of the first mounting block 41, through the buffering effect of the second elastic element 422 and the fourth elastic element 32, when the sleeve is installed, the elastic force of the second elastic element 422 pushes the second mounting block 421. When the second mounting block 421 contacts the first mounting block 41, under the elastic force of the second elastic element 422, the first mounting block 41 is continuously subjected to the second mounting block 421. Although the first mounting block 41 cannot pop out due to the thrust of the second mounting block 421, when the installation of the cover 2 encounters significant resistance, the operator can slide the sealing sleeve 33 down. When the notch 331 of the sealing sleeve 33 aligns with the first mounting block 41, the first mounting block 41 is no longer restricted by the movement of the sealing sleeve 33 and extends under the thrust of the second mounting block 421. This causes the first mounting block 41 to abut against the notch 331 of the sealing sleeve 33, restricting the sealing sleeve 33 from resetting. If the cover 2 is not installed in place, the first mounting block 41 will not extend after the operator slides the sealing sleeve 33 down. Instead, it will automatically reset under the drive of the reset component 34, allowing the operator to check the installation status of the cover 2 again, greatly improving the portability of the cover 2 installation.

[0043] Reference Figure 3 and Figure 4 The cover 2 is provided with a connecting component 21, which includes a threaded sleeve 211. The outer ring of the threaded sleeve 211 has an external thread, and the inner ring of the material tube 11 has an internal thread that mates with the threaded sleeve 211.

[0044] This invention achieves a rapid and tight connection with the material pipe 11 through the threaded sleeve 211. When installing the cover 2, the operator first aligns the threaded sleeve 211 with the material pipe 11. Then, the operator only needs to gently rotate the cover 2, and the threaded sleeve 211 integrated on the cover 2 will engage tightly and evenly with the internal threads on the material pipe 11. As the rotation continues, the fit between the threads becomes increasingly tight, achieving not only a rapid physical connection but also effectively preventing loosening and leakage at the connection point through the locking effect of the threads, ensuring the sealing and stability of the entire system. Furthermore, the threaded sleeve 211 of this invention is made of high-strength, corrosion-resistant materials to meet the challenges of various complex working environments, such as high temperature, high pressure, or corrosive media, further extending the service life of the connector and ensuring the reliability and safety of the system operation.

[0045] Reference Figure 3 and Figure 5 The sealing ring 31 is provided with a guide rod 311, which slides with the cover 2. The top of the guide rod 311 is provided with a limiting ring 3111.

[0046] This invention achieves the function of synchronous rotation of the sealing ring 31 and the cover 2 through the guide rod 311 and the limiting ring 3111. When the sealing ring 31 and the cover 2 are tightly fitted, the sealing effect between them is improved. Furthermore, the first elastic element 431, sleeved on the guide rod 311, enhances the expansion and contraction stability of the first elastic element 431 through the support and limiting effect of the guide rod 311. After the cover 2 is installed, the sealing ring 31 controls the contact position between the cover 2 and the guide rod 311, thereby preventing leakage at the connection between the cover 2 and the guide tube.

[0047] Reference Figure 4 The feed tube 11 is equipped with a removable sealing ring 12.

[0048] This invention improves the sealing performance at the connection between the sealing ring 31 and the feed tube 11 by using a sealing ring 12. Since the sealing ring 31 rotates with the cover 2 during installation, although this improves the sealing performance between the sealing ring 31 and the cover 2, friction occurs between the sealing ring 31 and the feed tube 11 after contact, leading to wear. Frequent disassembly and reassembly can affect the sealing performance between the sealing ring 31 and the feed tube 11. Therefore, a removable sealing ring 12 is provided on the feed tube 11. The deformation properties of the sealing ring 12 improve the sealing performance at the connection between the feed tube 11 and the sealing ring 31, while also reducing wear on parts and improving the stability of disassembly and reassembly.

[0049] Reference Figure 3 and Figure 4 A rotating handle 212 is installed on the cover 2.

[0050] This invention achieves the function of facilitating the disassembly and assembly of the cover 2 by means of a rotating handle 212. The rotating handle 212 is preferably a disc-shaped handle, and has a structure on it to avoid the guide rod 311, allowing the guide rod 311 to extend and retract normally relative to the cover 2. When disassembling or assembling the cover 2, it is necessary to rotate the cover 2, and the cover 2 is relatively large; therefore, a disc-shaped rotating handle 212 is provided to facilitate the operator's gripping and rotation of the cover 2.

[0051] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A petrochemical storage tank with a leakage protection structure, comprising a tank body (1), a feed pipe (11) disposed on the tank body (1), and a cover (2) for sealing the feed pipe (11); characterized in that, The cover (2) is provided with a sealing structure (3) and a detection mechanism (4). The sealing structure (3) includes a sealing ring (31) and a first elastic element (431). The two ends of the first elastic element (431) are connected to the sealing ring (31) and the cover (2) respectively. The detection mechanism (4) includes a first mounting block (41) movably disposed on the cover (2). During the connection between the cover (2) and the material tube (11), the first elastic element (431) is compressed after the sealing ring (31) contacts the material tube (11). When the cover (2), the sealing ring (31) and the material tube (11) are all tightly fitted, the sealing ring (31) squeezes the first mounting block (41), so that part of the first mounting block (41) protrudes from the outer surface of the cover (2). The outer ring of the cover (2) is fitted with a sealing sleeve (33) for sealing the connection position of the cover (2), sealing ring (31) and material tube (11) when the cover (2), sealing ring (31) and material tube (11) are tightly fitted. The cover (2) is provided with a reset assembly (34) for controlling the reset of the sealing sleeve (33), and the sealing sleeve (33) is provided with a notch (331) that cooperates with the first mounting block (41). When the notch (331) of the sealing sleeve (33) cooperates with the first mounting block (41) and the first mounting block (41) is in the extended state, the first mounting block (41) restricts the reset of the sealing sleeve (33). The cover (2) is provided with an installation ring (43), the first installation block (41) is slidably installed on the installation ring (43), the installation ring (43) is provided with a fourth elastic element (32), and the two ends of the fourth elastic element (32) are respectively connected to the first installation block (41) and the installation ring (43); The inner side of the sealing sleeve (33) and the outer side of the mounting ring (43) are provided with guide grooves (341). The reset assembly (34) includes a first fixing block (342), a second fixing block (343) and a third elastic element (344). The first fixing block (342) and the second fixing block (343) are respectively disposed on the sealing sleeve (33) and the mounting ring (43). The two ends of the third elastic element (344) are respectively connected to the first fixing block (342) and the second fixing block (343), and the first fixing block (342) and the second fixing block (343) are respectively slidably engaged with the guide grooves (341) on the mounting ring (43) and the sealing sleeve (33). The control component (42) includes a second mounting block (421) and a second elastic element (422); the second mounting block (421) is slidably mounted on the sealing ring (31), and the two ends of the second elastic element (422) are respectively connected to the sealing ring (31) and the second mounting block (421).

2. A petrochemical storage tank with a leakage protection structure according to claim 1, characterized in that, The cover (2) is provided with a connecting component (21), which includes a threaded sleeve (211). The outer ring of the threaded sleeve (211) has an external thread, and the inner ring of the tube (11) has an internal thread that mates with the threaded sleeve (211).

3. A petrochemical storage tank with a leakage protection structure according to claim 1, characterized in that, The sealing ring (31) is provided with a guide rod (311), which slides with the cover (2). The top of the guide rod (311) is provided with a limiting ring (3111).

4. A petrochemical storage tank with a leakage protection structure according to claim 1 or 3, characterized in that, The feed tube (11) is equipped with a removable sealing ring (12).

5. A petrochemical storage tank with a leakage protection structure according to claim 2, characterized in that, A rotating handle (212) is installed on the cover (2).

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