A sealing device, sealing system, oil storage tank and tank truck

Abstract

The application discloses a sealing device, a sealing system, an oil storage tank and an oil tank truck, which can comprise a floating plate, a guide column, an inverted cone frustum-shaped sealing ring and a clamping assembly; the floating plate is provided with a through hole, the guide column penetrates through the through hole, and the floating plate can move up and down along the guide column; the sealing ring and the clamping assembly are located below the floating plate and are sleeved outside the guide column, and the sealing ring is located between the floating plate and the clamping assembly; the clamping assembly is connected with the floating plate, the clamping assembly can slide up and down along the guide column, and in the clamped state, the gap between the sealing ring and the guide column can be sealed, so that the sealing ring and the clamping assembly jointly seal the gap between the through hole and the guide column. By using the inverted cone frustum-shaped sealing ring to seal the gap between the through hole of the floating plate and the guide column, the inverted cone frustum-shaped sealing ring is located below the floating plate and does not extend or is located between the through hole and the guide column, and there is no abrasion phenomenon in the process of moving the floating plate up and down, so that the service life is prolonged while the sealing is realized.

Description

Technical Field

[0001] This invention relates to the field of oil and gas storage and transportation technology, and in particular to a sealing device, a sealing system, an oil storage tank, and an oil tanker. Background Technology

[0002] With the rapid development of the national economy, petroleum resources continue to play an irreplaceable supporting role. Related research shows that petroleum products suffer losses of 3% to 5% throughout the entire process from extraction to refined products and then to the market. Of these losses, half occur during storage. Reducing losses during storage not only minimizes economic losses but also protects the environment.

[0003] Large storage tanks, as crucial oil storage facilities, are equipped with guide columns to ensure the stable operation of the floating roof during storage. The upper end of the guide column connects to the gauging hole at the top of the tank, vertically passing through the floating roof to the bottom, serving to position and guide the floating roof. In practice, prolonged up-and-down movement of the floating roof can cause the sealing device between the floating roof and the guide column to fail, leading to oil evaporation, resource waste, and even oil and gas leaks, polluting the surrounding environment. More seriously, oil and gas escaping from these gaps can cause fires or even explosions, and some toxic gases can cause poisoning, endangering personal safety. Furthermore, after a period of time, the lifespan of the sealing device between the floating roof and the guide column decreases sharply, requiring frequent maintenance and causing numerous problems for subsequent maintenance work. Summary of the Invention

[0004] In view of the above problems, this invention designs a floating roof guide column sealing device that can effectively reduce VOCs (volatile organic compounds) emissions, thereby reducing losses, saving energy, and protecting the environment. This invention is proposed to provide a sealing device, sealing system, oil storage tank, and oil tanker that overcomes or at least partially solves the above problems.

[0005] In a first aspect, embodiments of the present invention provide a sealing device, which may include: a float plate, a guide post, an inverted frustum-shaped sealing ring, and a clamping assembly;

[0006] The float plate has a through hole, and the guide post passes through the through hole, allowing the float plate to move up and down along the guide post;

[0007] The sealing ring and the clamping assembly are located below the float and are both sleeved outside the guide post. The sealing ring is located between the float and the clamping assembly. The clamping assembly is connected to the float and can slide up and down along the guide post. In the clamped state, it can seal the gap between the sealing ring and the guide post, so that the sealing ring and the clamping assembly jointly seal the gap between the through hole and the guide post.

[0008] Optionally, the sealing ring is made of an elastic material, and the taper of the sealing ring is 45° to 60°.

[0009] Optionally, the clamping assembly includes a plurality of sliding plates, a spring band connecting adjacent sliding plates, and a plurality of connecting posts;

[0010] The sliding plate is connected to the float via the connecting post;

[0011] The spring band contracts under the action of the external sliding plate retraction control device to clamp the sliding plate.

[0012] Optionally, the arc length ratio of the spring band and the slide plate is 1:5 to 1:3, and the number of spring bands is 3 to 6.

[0013] Optionally, the sliding plate is located below the sealing ring. When the sliding plate is clamped, it abuts against the sealing ring to seal the gap between the sealing ring and the guide post.

[0014] or,

[0015] At least a portion of the sliding plate is fitted over the sealing ring. When the sliding plate is clamped, it compresses the sealing ring, causing the sealing ring to deform and seal the gap between the sealing ring and the guide post.

[0016] Optionally, the slide plate is located below the sealing ring, and the slide plate is made of an elastic material.

[0017] Optionally, it also includes: the guide device disposed above the float plate, the guide device being positioned corresponding to the through hole, and the guide wheel of the guide device being able to abut against the cylindrical surface of the guide post.

[0018] Optionally, the guiding device may include: a support base and guide wheels mounted on the support base;

[0019] The support base is installed above the float.

[0020] Optionally, the sealing device may also include: a support foot connected below the float.

[0021] Optionally, there are multiple floats, and the sealing device may further include a connecting member; adjacent floats are connected by the connecting member.

[0022] Optionally, the float plate is also provided with an inlet / outlet hole.

[0023] Optionally, the sealing device may further include a sealing gasket located above the float and corresponding to the position of the through hole.

[0024] In a second aspect, embodiments of the present invention provide a sealing system, which may include: a gas concentration monitor, a slide plate shrinkage control device, and a sealing device as described in the first aspect;

[0025] The gas concentration monitor is located in the space above the float and is used to detect the concentration of volatile organic compounds and send the detected concentration results to the slide plate retraction control device.

[0026] The slide plate retraction control device is mounted on the slide plate of the clamping assembly and is used to compare the concentration result with a preset concentration threshold. When the concentration result exceeds the concentration threshold, the spring band of the clamping assembly is controlled to retract so that the sealing ring and the clamping assembly jointly seal the gap between the through hole and the guide post.

[0027] Thirdly, embodiments of the present invention provide an oil storage tank, which may include a tank body and a sealing device as described in the first aspect;

[0028] The sealing device is located inside the tank.

[0029] Optionally, the oil storage tank may also include: a gas concentration monitor and a slide plate shrinkage control device;

[0030] The gas concentration monitor is located inside the tank and above the float plate. It is used to detect the concentration of volatile organic compounds and send the detected concentration results to the slide plate retraction control device.

[0031] The slide plate retraction control device is mounted on the slide plate of the clamping assembly and is used to compare the concentration result with a preset concentration threshold. When the concentration result exceeds the concentration threshold, the spring band of the clamping assembly is controlled to retract so that the sealing ring and the clamping assembly jointly seal the gap between the through hole and the guide post.

[0032] Fourthly, embodiments of the present invention provide an oil tanker truck, which may include: a locomotive, a tank mounted on the locomotive, and a sealing device as described in the first aspect;

[0033] The sealing device is located inside the tank.

[0034] Optionally, the tanker truck may also include: a gas concentration monitor and a slide plate retraction control device;

[0035] The gas concentration monitor is located inside the tank and above the float plate. It is used to detect the concentration of volatile organic compounds and send the detected concentration results to the slide plate retraction control device.

[0036] The slide plate retraction control device is mounted on the slide plate of the clamping assembly and is used to compare the concentration result with a preset concentration threshold. When the concentration result exceeds the concentration threshold, the spring band of the clamping assembly is controlled to retract so that the sealing ring and the clamping assembly jointly seal the gap between the through hole and the guide post.

[0037] The beneficial effects of the above-mentioned technical solutions provided in the embodiments of the present invention include at least the following:

[0038] This invention provides a sealing device, a sealing system, an oil storage tank, and an oil tanker. The sealing device may include a float, a guide post, an inverted frustum-shaped sealing ring, and a clamping assembly. The float has a through hole, through which the guide post passes, and the float can move up and down along the guide post. The sealing ring and the clamping assembly are located below the float and are both sleeved outside the guide post, with the sealing ring located between the float and the clamping assembly. The clamping assembly is connected to the float and can slide up and down along the guide post. In the clamped state, it can seal the gap between the sealing ring and the guide post, so that the sealing ring and the clamping assembly jointly seal the gap between the through hole and the guide post.

[0039] The sealing device described in this invention addresses the problem in existing technologies where the sealing ring is positioned between the float and the guide post. In such cases, the float's prolonged up-and-down movement causes wear on the sealing ring, ultimately leading to a deterioration in the sealing effect and causing oil to evaporate and leak from the gap between the float and the guide post. The inventors innovatively propose using an inverted frustum-shaped sealing ring to seal the gap between the float's through-hole and the guide post. This inverted frustum-shaped sealing ring is located below the float and does not extend further, or is positioned between the through-hole and the guide post, eliminating wear during the float's up-and-down movement.

[0040] Furthermore, since there is a gap between the lower part of the sealing ring and the guide post in the embodiment of the present invention, the inventors have designed and added a clamping component. The clamping component can seal the gap between the sealing ring and the guide post when clamped, effectively preventing VOCs from overflowing.

[0041] The sealing device provided in this embodiment of the invention is applicable to different types of oil storage tanks and can be effectively adapted to the floating roof installed in the oil storage tank, thus having a wide range of applications. Furthermore, compared to the sealing rings located between the through hole and the guide post in the prior art, the sealing ring in this embodiment avoids wear during the up-and-down sliding process, extends its service life, eliminates the need for frequent maintenance or replacement, and saves significant maintenance costs and time.

[0042] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0043] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0044] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0045] Figure 1 This is one of the structural schematic diagrams of the sealing device provided in the embodiments of the present invention;

[0046] Figure 2 This is a second schematic diagram of the sealing device provided in an embodiment of the present invention;

[0047] Figure 3 This is a schematic diagram of the guiding device and sealing gasket provided in the embodiments of the present invention;

[0048] Figure 4 This is a schematic diagram of the clamping assembly provided in an embodiment of the present invention;

[0049] Among them, 1 is the sealing device; 2 is the slide plate shrinkage control device; 3 is the gas concentration monitor; 4 is the tank; 5 is the medium; and 6 is the disposable sealing material.

[0050] 11 is the float plate; 12 is the guide post; 13 is the sealing ring; 14 is the clamping assembly; 15 is the guiding device; 16 is the support leg; 17 is the connecting component; 18 is the sealing gasket;

[0051] 111 is a through hole; 112 is an inlet / outlet hole;

[0052] 141 is the skateboard; 142 is the spring band; 143 is the connecting post; 151 is the guide wheel; 152 is the support base. Detailed Implementation

[0053] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0054] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "far," "near," "front," and "rear," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] This invention provides a sealing device that can be applied to oil storage tanks or oil tank trucks to effectively seal the tank body and reduce oil loss caused by VOCs (volatile organic compounds) overflow.

[0057] Reference Figures 1-4 As shown, the sealing device 1 may include: a float plate 11, a guide post 12, an inverted frustum-shaped sealing ring 13, and a clamping assembly 14;

[0058] The float plate 11 has a through hole 111, through which the guide post 12 passes. The float plate 11 can move up and down along the guide post 12. The sealing ring 13 and the clamping assembly 14 are located below the float plate 11 and are both sleeved on the outside of the guide post 12. The sealing ring 13 is located between the float plate 11 and the clamping assembly 14. The clamping assembly 14 is connected to the float plate 11 and can slide up and down along the guide post 12. When clamped, it can seal the gap between the sealing ring 13 and the guide post 12, so that the sealing ring 13 and the clamping assembly 14 jointly seal the gap between the through hole 111 and the guide post 12.

[0059] The sealing device described in this invention addresses the problem in existing technologies where the sealing ring is positioned between the float and the guide post. In such cases, the float's prolonged up-and-down movement causes wear on the sealing ring, ultimately leading to a deterioration in the sealing effect and causing oil to evaporate and leak from the gap between the float and the guide post. The inventors innovatively propose using an inverted frustum-shaped sealing ring to seal the gap between the float's through-hole and the guide post. This inverted frustum-shaped sealing ring is located below the float and does not extend further, or is positioned between the through-hole and the guide post, eliminating wear during the float's up-and-down movement.

[0060] In practical implementation, the lower inner diameter of the inverted frustum-shaped sealing ring should be (slightly) larger than the diameter of the guide post. This facilitates the sealing ring's sliding up and down with the float plate and prevents the guide post from completely sealing the through hole in the float plate, which could lead to uneven pressure on the float plate. More specifically, in this embodiment of the invention, the upper edge of the sealing ring can be fixedly connected to the float plate, so that the float plate and the sealing ring act as a whole, sliding up and down as a whole during sliding.

[0061] Since there is a gap between the lower part of the sealing ring and the guide post in the embodiment of the present invention, the inventors designed and added a clamping component. The clamping component can seal the gap between the sealing ring and the guide post when clamped, effectively preventing VOCs from overflowing.

[0062] The sealing device provided in this embodiment of the invention is applicable to different types of oil storage tanks and can be effectively adapted to the floating roof installed in the oil storage tank, thus having a wide range of applications. Furthermore, compared to the sealing rings located between the through hole and the guide post in the prior art, the sealing ring in this embodiment avoids wear during the up-and-down sliding process, extends its service life, eliminates the need for frequent maintenance or replacement, and saves significant maintenance costs and time.

[0063] This invention solves the problem in existing technologies where poor sealing between the floating roof and guide column of storage tanks leads to excessive VOC emissions, potentially causing oil loss and environmental pollution. Furthermore, it addresses the risk of fires and explosions due to VOC overflows, and some toxic gases can even cause poisoning and endanger human safety. Moreover, it solves the problems of short service life and limited application range of guide column sealing devices in existing technologies, effectively reducing VOC emissions and lowering the incidence of fires, explosions, and poisoning accidents caused by excessive VOC emissions.

[0064] In an optional embodiment, refer to Figures 1-4As shown, the sealing ring 13 is made of elastic material, and the taper of the sealing ring 13 is 45° to 60°. In this embodiment of the invention, the sealing ring can be made of elastic materials such as nitrile rubber or fluorinated rubber. In this embodiment of the invention, the sealing ring is shaped like an inverted frustum. On the one hand, the inverted frustum-shaped sealing ring can seal the gap between the guide post and the through hole of the float plate to prevent VOCs from overflowing; on the other hand, the taper of 45° to 60° avoids an excessively large gap between the lower part of the columnar sealing ring and the guide post, which would cause VOCs to overflow along the gap between the sealing ring and the guide post. Through numerous experiments, the inventors set the taper range between 45° and 60°, which effectively seals the gap between the sealing ring and the guide post when the clamping assembly abuts against the sealing ring, and also deforms the sealing ring and seals the cover gap when the sliding plate of the clamping assembly squeezes the sealing ring.

[0065] In another alternative embodiment, refer to Figures 1-4 As shown, the clamping assembly 14 may include a plurality of slide plates 141, a spring band 142 connecting adjacent slide plates 141, and a plurality of connecting posts 143; the slide plates 141 are connected to the float plate 11 through the connecting posts 143; the spring band 142 retracts under the action of the external slide plate retraction control device 2 to clamp the slide plates 141.

[0066] The clamping assembly provided in this embodiment of the invention can control the distance between the slide plates by the extension and contraction of the spring band, so that the slide plates can slide up and down along the guide post in the extended state; and in the contracted state, the slide plates are clamped to seal the gap between the lower part of the slide plate sealing ring and the guide post. In this embodiment of the invention, multiple float plates, connecting components, pontoons, anti-spinning devices, and frames are assembled into a single floating platform. The floating platform, guide post, sealing ring, and slide plates form a regional static sealing structure, which can isolate the air above the floating platform and the oil and gas below the floating platform, achieving oil and gas sealing.

[0067] In another alternative embodiment, refer to Figures 1-4 As shown, the arc length ratio of spring band 142 to slide plate 141 is 1:5 to 1:3, and the number of spring bands 142 is 3 to 6. In this embodiment of the invention, the inventors, through multiple experiments, determined that the sealing effect is optimal when the arc length ratio is between 1:5 and 1:3 and the number of spring bands is 3 to 6. At this ratio and number, the slide plate can have sufficient contact area to abut against the sealing ring or compress the lower part of the sealing ring, thereby sealing the gap between the lower part of the sealing ring and the guide post.

[0068] In a specific example, combined Figure 4As shown, the slide plate 141 is located below the float plate 11 and is wrapped around the guide post 12. A spring band 142 is installed on the slide plate 141 every 90°. A stainless steel pipe (connecting post 143) is installed in the middle of the slide plate 141 every 90°. One end of the stainless steel pipe is connected to the bottom of the float plate 11, and the other end is connected to the slide plate 141.

[0069] In specific implementations, the slide plate and sealing ring in the embodiments of the present invention can have various structural relationships. For example, the slide plate is located below the sealing ring and abuts against and squeezes the sealing ring when it contracts; or a portion of the slide plate is fitted outside the sealing ring and compresses the sealing ring to achieve a seal when it contracts.

[0070] In another alternative embodiment, refer to Figures 1-4 As shown, the sliding plate 141 is located below the sealing ring 13. When the sliding plate 141 is clamped, it abuts against the sealing ring 13 to seal the gap between the sealing ring 13 and the guide post 12. In this embodiment, since the gap is sealed by the sliding plate abutting against the sealing ring, the sliding plate 141 is located below the sealing ring 13. The sliding plate is also made of an elastic material, such as the same material as the sealing ring, such as nitrile rubber, fluorinated rubber, or other elastic materials.

[0071] In another alternative embodiment, refer to Figures 1-4 As shown, at least a portion of the sliding plate 141 is fitted over the sealing ring 13. When the sliding plate 141 is clamped, it compresses the sealing ring 13 to seal the gap between the sealing ring 13 and the guide post 12 after the sealing ring 13 is deformed.

[0072] In this embodiment, since the function of the slide plate in this embodiment is to compress the sealing ring and seal the gap between the guide post and the lower part of the sealing ring by the deformation of the sealing ring, the material of the slide plate in this embodiment is not specifically limited. It can be a rigid material, such as PVC board; or it can be an elastic material, such as the same as the material of the sealing ring. As long as the sealing ring can be compressed and deformed in the contracted state to achieve sealing, this embodiment does not make specific limitations.

[0073] In another alternative embodiment, refer to Figures 1-3 As shown, the sealing device 1 may further include: a guide device 15 disposed above the float 11, the guide device 15 corresponding to the position of the through hole 111, and the guide wheel 151 of the guide device 15 abutting against the cylindrical surface of the guide post 12. In this embodiment of the invention, the guide device is used to balance the lateral torque generated during the up-and-down movement of the float.

[0074] Specifically, refer to Figure 1 and Figure 2As shown, the guiding device 15 may include: a support base 152 and a guide wheel 151 mounted on the support base 152; the support base 152 is mounted above the float 11.

[0075] The guide device is located above the floating platform. The lower end of the support seat 152 of the guide device is connected to the upper end of the floating plate 11. The upper end is pushed against the guide column 12 by the guide wheel 151, which is used to balance the torque generated by the left and right movement of the floating plate 11 during the up and down movement.

[0076] In another optional embodiment, the sealing device 1 may further include: a support leg 16 connected below the float 11; the support leg in this embodiment of the invention can support the float when the float is in the lowered state.

[0077] In another optional embodiment, there are multiple floats 11, and the sealing device 1 may further include a connecting member 17; adjacent floats 11 are connected by the connecting member 17; the sealing device in the embodiment of the present invention is generally used in large oil storage tanks and oil tank trucks, and multiple floats can be provided, and multiple floats are connected to each other by the connecting member to cover the entire oil surface.

[0078] It should be noted that the connecting member 17 in this embodiment of the invention does not only connect adjacent float plates 11, but can also connect float plates to float cylinders (not shown in the figure) or other components of floating platforms. This will not be elaborated further in this embodiment. (Refer to...) Figure 1 As shown, the float plate is sealed to the edge of the tank body by a disposable sealing material 6, thus sealing the medium 5 (finished oil, stored oil, etc.) inside the tank body.

[0079] In another optional embodiment, the float plate 11 is also provided with an access hole 112; the access hole mentioned above in the embodiment of the present invention is also called a manhole, which is a passage and opening for cleaning oil tanks and maintenance personnel to enter and exit.

[0080] In another optional embodiment, the sealing device 1 may further include a sealing gasket 18 located above the float 11 and corresponding to the position of the through hole 111, with the sealing gasket 18 positioned between the guide post 12 and the guide device 15. In this embodiment of the invention, to improve the sealing effect of the sealing device, the inventors have further provided a sealing gasket 18 above the float. In specific implementation, the sealing gasket in this embodiment is not located in the gap between the guide post and the through hole of the float, nor does it extend into the gap. This avoids wear on the sealing gasket during the up-and-down movement of the float. More specifically, the sealing gasket in this embodiment can be limited by the guide device, allowing it to move up and down with the float as it moves.

[0081] Based on the same inventive concept, this embodiment of the invention also provides a sealing system, which may include: a gas concentration monitor 3, a sliding plate shrinkage control device 2, and the above-mentioned sealing device 1;

[0082] The gas concentration monitor 3 is located in the space above the float 11 and is used to detect the concentration of volatile organic compounds and send the detected concentration results to the slide plate retraction control device 2.

[0083] The slide plate shrinkage control device 2 is mounted on the slide plate 141 of the clamping assembly 14. It is used to compare the concentration result with a preset concentration threshold. When the concentration result exceeds the concentration threshold, the spring band 142 of the clamping assembly 14 is controlled to shrink so that the sealing ring 13 and the clamping assembly 14 jointly seal the gap between the through hole 111 and the guide post 12.

[0084] In practical applications, a VOCs gas monitor installed above the floating roof monitors the concentration of leaked gas. When the concentration exceeds 30 ppm, the monitor will sound an alarm. Then, upon receiving the signal from the VOCs gas monitor, the automatic control device installed on the slide plate retracts, causing one of the spring bands to contract. The monitor then continues to monitor the VOCs concentration; if it still exceeds 30 ppm, the automatic control device will cause a second spring band to contract. This process continues until the VOCs concentration monitored by the monitor is less than 30 ppm, at which point the automatic control device ceases to function. After multiple spring bands have contracted, the pressure between the slide plate and the guide column will exceed the saturated vapor pressure, preventing further oil and gas leakage.

[0085] Based on the same inventive concept, an oil storage tank is also provided in this embodiment of the invention, referring to... Figure 1 As shown, the oil storage tank may include a tank body 4 and the aforementioned sealing device 1; the sealing device 1 is located inside the tank body 4.

[0086] In an optional embodiment, the oil storage tank may further include: a gas concentration monitor 3 and a sliding plate retraction control device 2;

[0087] The gas concentration monitor 3 is located inside the tank 4 and above the float 11. It is used to detect the concentration of volatile organic compounds and send the detected concentration results to the slide plate shrinkage control device 2.

[0088] The slide plate shrinkage control device 2 is mounted on the slide plate 141 of the clamping assembly 14. It is used to compare the concentration result with a preset concentration threshold. When the concentration result exceeds the concentration threshold, the spring band 142 of the clamping assembly 14 is controlled to shrink so that the sealing ring 13 and the clamping assembly 14 jointly seal the gap between the through hole 111 and the guide post 12.

[0089] Based on the same inventive concept, this invention also provides an oil tanker truck, as shown in the following embodiments. Figure 1 As shown, the tanker truck may include: a locomotive, a tank 4 mounted on the locomotive, and the aforementioned sealing device 1;

[0090] The sealing device 1 is located inside the tank 4.

[0091] In an optional embodiment, the tanker truck may further include: a gas concentration monitor 3 and a sliding plate retraction control device 2;

[0092] The gas concentration monitor 3 is located inside the tank 4 and above the float 11. It is used to detect the concentration of volatile organic compounds and send the detected concentration results to the slide plate shrinkage control device 2.

[0093] The slide plate shrinkage control device 2 is mounted on the slide plate 141 of the clamping assembly 14. It is used to compare the concentration result with a preset concentration threshold. When the concentration result exceeds the concentration threshold, the spring band 142 of the clamping assembly 14 is controlled to shrink so that the sealing ring 13 and the clamping assembly 14 jointly seal the gap between the through hole 111 and the guide post 12.

[0094] For specific examples and beneficial effects of the sealing system, oil storage tank, and oil tanker provided in the embodiments of the present invention, please refer to the relevant parts of the sealing structure described above. The embodiments of the present invention will not be repeated here.

[0095] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. This disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims. Thus, if these modifications and variations of the invention fall within the scope of the claims of the invention and their equivalents, the invention is also intended to include these modifications and variations.

Claims

1. A sealing device, characterized in that, include: Float, guide post, inverted frustum-shaped sealing ring and clamping assembly; The float plate has a through hole, and the guide post passes through the through hole, allowing the float plate to move up and down along the guide post; The sealing ring and the clamping assembly are located below the float and are both sleeved outside the guide post. The sealing ring is located between the float and the clamping assembly. The clamping assembly includes several sliding plates, a spring band connecting adjacent sliding plates, and several connecting posts. The sliding plates are connected to the float via the connecting posts. The spring band contracts under the action of an external sliding plate retraction control device to clamp the sliding plates. The clamping assembly can slide up and down along the guide post. The sliding plate is located below the sealing ring. When the sliding plate is clamped, it abuts against the sealing ring to seal the gap between the sealing ring and the guide post. or, At least a portion of the sliding plate is fitted over the sealing ring. When the sliding plate is clamped, it compresses the sealing ring, causing the sealing ring to deform and seal the gap between the sealing ring and the guide post.

2. The sealing device according to claim 1, characterized in that, The sealing ring is made of an elastic material, and the taper of the sealing ring is 45°~60°.

3. The sealing device according to claim 1, characterized in that, The arc length ratio of the spring band and the sliding plate is 1:5 to 1:3, and the number of spring bands is 3 to 6.

4. The sealing device according to claim 1, characterized in that, The sliding plate is located below the sealing ring, and the sliding plate is made of elastic material.

5. The sealing device according to any one of claims 1 to 4, characterized in that, Also includes: A guide device is installed above the floating plate, the guide device is positioned corresponding to the through hole, and the guide wheel of the guide device can abut against the cylindrical surface of the guide column.

6. The sealing device according to claim 5, characterized in that, The guiding device includes: a support base and guide wheels mounted on the support base; The support base is installed above the float.

7. The sealing device according to any one of claims 1 to 4, characterized in that, Also includes: Support legs connected below the float plate; And / or, The floating plates are multiple, and the sealing device further includes: a connecting member; adjacent floating plates are connected by the connecting member; And / or, The floating plate is also provided with an inlet / outlet hole; And / or, A sealing gasket is located above the float plate and corresponds to the position of the through hole.

8. A sealing system, characterized in that, include: Gas concentration monitor, slide plate shrinkage control device and sealing device as described in any one of claims 1 to 7; The gas concentration monitor is located in the space above the float and is used to detect the concentration of volatile organic compounds and send the detected concentration results to the slide plate retraction control device. The slide plate retraction control device is mounted on the slide plate of the clamping assembly and is used to compare the concentration result with a preset concentration threshold. When the concentration result exceeds the concentration threshold, the spring band of the clamping assembly is controlled to retract so that the sealing ring and the clamping assembly jointly seal the gap between the through hole and the guide post.

9. An oil storage tank, characterized in that, Includes a tank and a sealing device as described in any one of claims 1 to 7; The sealing device is located inside the tank.

10. The oil storage tank according to claim 9, characterized in that, Also includes: Gas concentration monitor and slide plate retraction control device; The gas concentration monitor is located inside the tank and above the float plate. It is used to detect the concentration of volatile organic compounds and send the detected concentration results to the slide plate retraction control device. The slide plate retraction control device is mounted on the slide plate of the clamping assembly and is used to compare the concentration result with a preset concentration threshold. When the concentration result exceeds the concentration threshold, the spring band of the clamping assembly is controlled to retract so that the sealing ring and the clamping assembly jointly seal the gap between the through hole and the guide post.

11. A tanker truck, characterized in that, include: Locomotive, tank mounted on the locomotive, and sealing device as described in any one of claims 1 to 7; The sealing device is located inside the tank.

12. The tanker truck according to claim 11, characterized in that, Also includes: Gas concentration monitor and slide plate retraction control device; The gas concentration monitor is located inside the tank and above the float plate. It is used to detect the concentration of volatile organic compounds and send the detected concentration results to the slide plate retraction control device. The slide plate retraction control device is mounted on the slide plate of the clamping assembly and is used to compare the concentration result with a preset concentration threshold. When the concentration result exceeds the concentration threshold, the spring band of the clamping assembly is controlled to retract so that the sealing ring and the clamping assembly jointly seal the gap between the through hole and the guide post.

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