阅读说明：本技术 储油罐 (Oil storage tank ) 是由 黄怡斌 马斌 杨钊林 侯民轩 李伟明 刘跃建 于 2020-12-24 设计创作，主要内容包括：本申请提供一种储油罐。储油罐包括罐体、内浮顶、密封盖、绳轮装置以及收线装置。罐体用于储存航油,其中罐体的顶端设置有罐顶计量孔。密封盖包括盖合状态和打开状态,在盖合状态下,密封盖遮盖内浮顶计量口,在打开状态下,密封盖打开内浮顶计量口。绳轮装置包括绳索和滑轮,其中滑轮设置于罐顶计量孔的孔壁,绳索的一端与密封盖连接,绳索的另一端绕过滑轮延伸至罐顶计量孔的孔壁外,用于翻转密封盖,使密封盖在盖合状态和打开状态之间切换,收线装置固定于罐顶计量孔外,且与绳索的另一端连接,收纳部分绳索,在密封盖处于盖合状态和打开状态时,锁止绳索。本申请通过如此设置,便于工作人员进行计量作业。(The application provides an oil storage tank. The oil storage tank comprises a tank body, an inner floating roof, a sealing cover, a rope wheel device and a take-up device. The tank body is used for storing aviation oil, and a tank top metering hole is formed in the top end of the tank body. The sealing cover comprises a covering state and an opening state, the sealing cover covers the inner floating roof metering opening in the covering state, and the sealing cover opens the inner floating roof metering opening in the opening state. The rope sheave device comprises a rope and a pulley, wherein the pulley is arranged on the hole wall of the tank top metering hole, one end of the rope is connected with the sealing cover, the other end of the rope bypasses the pulley and extends to the outside of the hole wall of the tank top metering hole, the sealing cover is used for overturning, the sealing cover is switched between a covering state and an opening state, the take-up device is fixed outside the tank top metering hole and is connected with the other end of the rope, and part of the rope is stored, and when the sealing cover is in the covering state and the opening state, the rope is locked. This application is through so setting up, and the staff of being convenient for measures the operation.)

1. An oil storage tank, comprising:

the tank body is used for storing aviation oil, and a tank top metering hole is formed in the top end of the tank body;

the inner floating roof is arranged in the tank body and floats on the liquid level of the aviation fuel; the inner floating roof is provided with an inner floating roof metering opening which corresponds to the tank roof metering hole in the vertical direction;

the sealing cover is rotatably connected with the wall of the inner floating roof metering opening; the sealing cover comprises a covering state and an opening state, wherein in the covering state, the sealing cover covers the inner floating roof metering opening, and in the opening state, the sealing cover opens the inner floating roof metering opening;

a sheave device including a rope and a sheave; the pulley is arranged on the hole wall of the tank top metering hole, one end of the rope is connected with the sealing cover, and the other end of the rope extends out of the hole wall of the tank top metering hole by bypassing the pulley and is used for turning over the sealing cover so as to switch the sealing cover between a closed state and an open state; and

and the take-up device is fixed outside the tank top metering hole, is connected with the other end of the rope, and is used for accommodating part of the rope, and the sealing cover is in a covering state and an opening state and is locked with the rope.

2. The storage tank of claim 1, wherein said closure includes a cover rotatably connected to a wall of said inner floating roof metering orifice, said cover covering said inner floating roof metering orifice in said closed position and opening said inner floating roof metering orifice in said open position.

3. The oil storage tank of claim 2, wherein the cover is an aluminum alloy cover and the inner floating roof is an aluminum alloy inner floating roof.

4. The storage tank of any one of claims 1-3, wherein said rope is a stainless steel rope.

5. The storage tank of claim 4, wherein the rope has a diameter in the range of 1.5mm to 4 mm;

the weight range of the sealing cover is 40 g-80 g.

6. The storage tank of claim 1, wherein the wall of the top metering hole has a slot communicating the inside and outside of the top metering hole, the pulley is mounted in the slot, and a portion of the pulley is located in the top metering hole and a portion of the pulley is located outside of the top metering hole.

7. The storage tank of claim 6, wherein the pulley has a diameter in the range of 10mm to 20 mm.

8. The oil storage tank of claim 6, comprising a rain shield over and/or outside the pulley.

9. The storage tank of claim 1, wherein said sealing cap is hingedly connected to the lower end of said floating roof metering orifice, said sealing cap being flipped open downwardly.

10. The storage tank as claimed in claim 9, wherein the hinge is provided to correspond to the pulley in a vertical direction, and one end of the rope is connected to a side of the sealing cover opposite to the hinge.

11. The storage tank of claim 1, wherein said sealing cap includes a cap rotatably connected to a wall of said floating roof metering orifice and a sealing member overlying a surface of said cap facing said floating roof metering orifice, said cap covering said floating roof metering orifice in said closed position, said sealing member sealing between said cap and an end surface of said floating roof metering orifice.

12. The storage tank of claim 11, wherein the seal cap further comprises a blind rivet securing the seal to the cover; and/or the sealing element is adhered to the surface of the cover body.

13. The storage tank of claim 11, wherein said seal is an oil resistant rubber seal.

14. The storage tank of claim 7, wherein the tank body includes a top surface that is a curved surface, the tank top metering hole is located in the top surface and offset from a center of the top surface, and the pulley and the take-up are disposed on a wall of the tank top metering hole that faces a centerline of the top surface of the tank body.

15. The oil storage tank of claim 1, wherein the wire winding device is an automatic wire winding device, and comprises a housing, a rotating shaft, a winding drum, a spring and a rotating disc, the rotating shaft is disposed in the middle of the housing, the winding drum is sleeved on the rotating shaft, one end of the spring is fixed on the winding drum, the other end of the spring is connected with the other end of the rope, the rotating shaft is fixedly sleeved with the rotating discs on the left side and the right side of the winding drum, and the diameter of the rotating discs is larger than that of the winding drum.

Technical Field

The application relates to the field of aviation fuel, in particular to an oil storage tank.

Background

In order to reduce the evaporation of the aviation fuel, an inner floating roof is required to be arranged in the fuel storage tank, the inner floating roof floats on the liquid level of the aviation fuel, and in order to measure the aviation fuel, an inner floating roof metering opening is required to be arranged on the inner floating roof. In the related technology, the sealing rubber is arranged at the metering opening of the inner floating roof, the oil dip rod penetrates through the sealing rubber and extends into the aviation oil to measure the aviation oil quantity, and the sealing rubber is cut to rub the surface of the dip rod to carry out oil printing in the process of lifting the dip rod, so that reading is difficult, and inconvenience is brought to workers.

Disclosure of Invention

The application provides an oil storage tank of the volume of aviation oil of aiming at being convenient for measure.

The application provides an oil storage tank, wherein the oil storage tank includes:

the tank body is used for storing aviation oil, and a tank top metering hole is formed in the top end of the tank body;

the inner floating roof is arranged in the tank body and floats on the liquid level of the aviation fuel; the inner floating roof is provided with an inner floating roof metering opening which corresponds to the tank roof metering hole in the vertical direction;

the sealing cover is rotatably connected with the wall of the inner floating roof metering opening; the sealing cover comprises a covering state and an opening state, wherein in the covering state, the sealing cover covers the inner floating roof metering opening, and in the opening state, the sealing cover opens the inner floating roof metering opening;

a sheave device including a rope and a sheave; the pulley is arranged on the hole wall of the tank top metering hole, one end of the rope is connected with the sealing cover, and the other end of the rope extends out of the hole wall of the tank top metering hole by bypassing the pulley and is used for turning over the sealing cover so as to switch the sealing cover between a closed state and an open state; and

and the take-up device is fixed outside the tank top metering hole, is connected with the other end of the rope, and is used for accommodating part of the rope, and the sealing cover is in a covering state and an opening state and is locked with the rope.

Optionally, the sealed lid include with the lid that the wall of interior floating roof measurement mouth rotationally connects the state is closed to the lid, the lid covers interior floating roof measurement mouth open the state, the lid is opened interior floating roof measurement mouth, the material of lid with the material of interior floating roof is the same.

Optionally, the cover body is an aluminum alloy cover body, and the inner floating roof is an aluminum alloy inner floating roof.

Optionally, the rope is a stainless steel rope.

Optionally, the diameter range of the rope is 1.5 mm-4 mm;

the weight range of the sealing cover is 40 g-80 g.

Optionally, the pore wall of tank deck metering hole is equipped with the intercommunication the inside and outside fluting of tank deck metering hole, the pulley install in the fluting, a part of pulley is located in the tank deck metering hole, and a part is located outside the tank deck metering hole.

Optionally, the diameter of the pulley ranges from 10mm to 20 mm.

Optionally, the oil storage tank includes rain-proof cover, rain-proof cover in the top and/or the outside of pulley.

Optionally, the sealing cover is connected to the lower end of the inner floating roof metering opening through a hinge, and the sealing cover is turned over downwards and opened.

Optionally, the hinge and the pulley are arranged in a vertical direction, and one end of the rope is connected to one side of the sealing cover opposite to the hinge.

Optionally, the sealed lid include with the lid that the wall of interior floating roof metering orifice rotationally connects, and cover in the orientation of lid the sealing member on the surface of interior floating roof metering orifice the state is closed to the lid, the lid covers interior floating roof metering orifice, the sealing member seal in the lid with between the terminal surface of interior floating roof metering orifice.

Optionally, the sealing cover further comprises a blind rivet for fixing the sealing element to the cover body; and/or the sealing element is adhered to the surface of the cover body.

Optionally, the seal is an oil resistant rubber seal.

Optionally, the jar body is including the top surface that is the cambered surface, the tank deck metering hole is located the top surface and deviates the center of top surface, the pulley with take-up set up in the orientation of tank deck metering hole on the pore wall of the central line of the top surface of the jar body.

Optionally, the wire winding device is an automatic wire winding device and comprises a shell, a rotating shaft, a winding drum, a spring and a rotary disc, wherein the rotating shaft is arranged in the middle of the shell, the winding drum is sleeved on the rotating shaft, one end of the spring is fixed on the winding drum, the other end of the spring is connected with the other end of the rope, the rotating shaft is fixedly sleeved with the rotary disc on the left side and the right side of the winding drum respectively, and the diameter of the rotary disc is larger than that of the winding drum.

The application provides an oil storage tank includes sealed lid, rope sheave device and take-up, and sealed lid covers the internal floating roof measurement mouth under the state of closing, opens the internal floating roof measurement mouth under the open mode, and the rope sheave device is used for the sealed lid of upset, makes sealed lid switch between the state of closing and open mode, and take-up accomodates partial rope, is in the state of closing and open mode at sealed lid, locking rope. When the metering is needed, a worker can open the sealing cover by operating the take-up device, so that the inner floating roof metering opening is opened, and the worker can conveniently stretch the oil dip rod into the inner floating roof metering opening to perform metering operation; after the measurement operation finishes, the staff is through operating take-up for the rope tightens up, closes sealed lid, thereby closed inner floating roof measurement mouth, so can make things convenient for staff's measurement operation, reduces the measurement error, and can seal inner floating roof measurement mouth betterly, effectively reduce the oil loss, increase the security of oil storage tank.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

FIG. 1 is a schematic cross-sectional view of an oil storage tank of the present application;

fig. 2 is a partially enlarged view showing a sealing cap of the oil storage tank of the present application in a closed state;

fig. 3 is a partially enlarged view showing a seal cover of the oil storage tank of the present application in an opened state;

fig. 4 is a schematic cross-sectional view of a take-up device of the storage tank of the present application;

fig. 5 is a schematic cross-sectional view showing the connection of a spring and a rope of the wire takeup device for the oil tank of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The application provides an oil storage tank includes a jar body, internal floating roof, sealed lid, rope sheave device and take-up. The tank body is used for storing aviation oil, and a tank top metering hole is formed in the top end of the tank body. The inner floating roof is arranged in the tank body and floats on the liquid level of the aviation fuel, and the inner floating roof is provided with an inner floating roof metering opening which corresponds to the tank roof metering hole in the vertical direction. The sealing cover is rotatably connected with the wall of the inner floating roof metering port, the sealing cover comprises a covering state and an opening state, the sealing cover covers the inner floating roof metering port in the covering state, and the sealing cover opens the inner floating roof metering port in the opening state. The rope wheel device comprises a rope and a pulley, wherein the pulley is arranged on the hole wall of the tank top metering hole, one end of the rope is connected with the sealing cover, and the other end of the rope bypasses the pulley and extends to the outside of the hole wall of the tank top metering hole, so that the sealing cover is turned over and is switched between a covering state and an opening state. The take-up device is fixed outside the tank top metering hole and is connected with the other end of the rope to store part of the rope, and the sealing cover is in a covering state and an opening state and is locked with the rope.

The application provides an oil storage tank includes sealed lid, rope sheave device and take-up, and sealed lid covers the internal floating roof measurement mouth under the state of closing, opens the internal floating roof measurement mouth under the open mode, and the rope sheave device is used for the sealed lid of upset, makes sealed lid switch between the state of closing and open mode, and take-up accomodates partial rope, is in the state of closing and open mode at sealed lid, locking rope. When the metering is needed, a worker can open the sealing cover by operating the take-up device, so that the inner floating roof metering opening is opened, and the worker can conveniently stretch the oil dip rod into the inner floating roof metering opening to perform metering operation; after the metering operation is finished, a worker can tighten the rope by operating the wire take-up device, the sealing cover is closed, and the inner floating top metering port is closed, so that the metering operation of the worker can be facilitated, the scratch of oil marks on the surface of the ruler belt in the ruler lifting process is avoided, the metering error is reduced, the inner floating top metering port can be well sealed, the oil loss is effectively reduced, and the safety of an oil storage tank is improved.

Fig. 1 is a cross-sectional view of an oil storage tank 1 provided in the present application. As shown in fig. 1, the oil storage tank 1 includes a tank body 10, an inner floating roof 11, a seal cover 2, a sheave device 13, and a wire takeup device 14. Fig. 2 is a partially enlarged view of a seal cap 2 of an oil tank 1 according to the present invention in a closed state. Fig. 3 is a partially enlarged view of the seal cap 2 of the oil storage tank 1 provided in the present application in an opened state. Referring to fig. 1, 2 and 3, in some embodiments, a tank 10 is used for storing aviation fuel, and a top end of the tank 10 is provided with a tank top metering hole 15. The tank top metering hole 15 communicates the space inside the tank body 10 with the space outside the oil storage tank 1. During the metering operation, the top metering hole 15 is opened, and after the metering operation is completed, the top metering hole 15 is covered.

The inner floating roof 11 is arranged in the tank body 10 and floats on the liquid level of the aviation oil, the inner floating roof 11 is provided with an inner floating roof metering port 110 corresponding to the tank roof metering hole 15 in the vertical direction, so that the central line of the tank roof metering hole 15 and the central line of the inner floating roof metering port 110 are approximately on the same straight line, and a staff is convenient to sequentially pass the oil measuring ruler through the tank roof metering hole 15 and the inner floating roof metering port 110 and stretch into the aviation oil to carry out metering operation. The staff can also put into the aviation oil through tank deck metering hole 15 and interior floating roof measurement mouth 110 with measurement equipment such as thermometer heat preservation box, sampling bucket and measure the operation. In some embodiments, the middle portion of the inner floating roof metering port 110 is cylindrical, the upper portion is in a horn shape with an opening becoming larger from bottom to top, and the lower portion is in a horn shape with an opening becoming larger from top to bottom, so that when a metering device is put into the inner floating roof metering port 110, the metering device can pass through the inner floating roof metering port conveniently and can be taken out conveniently. In other embodiments, the internally floating roof metering orifice 110 is cylindrical.

In some embodiments, the sealing cap 2 is rotatably coupled to a wall of the floating top metering orifice 110, and the sealing cap 2 includes a closed state in which the sealing cap 2 covers the floating top metering orifice 110 and an open state in which the sealing cap 2 opens the floating top metering orifice 110. The sealing cover 2 is rotatably connected with the wall of the inner floating roof metering opening 110, and the sealing cover 2 can be turned over and switched between a closed state and an open state. Under the open mode of sealed lid 2, interior floating roof metering orifice 110 is opened, makes the space that the jar body 10 is located interior floating roof 11 below communicate with the space that is located interior floating roof 11 top to communicate with tank deck metering orifice 15, make the staff can pass tank deck metering orifice 15 and interior floating roof metering orifice 110 in proper order with measurement equipment such as dip rod, stretch into in the oil by plane of interior floating roof 11 below, measure the operation, be convenient for measure the volume of oil by plane. In the closed state, the sealing cover 2 covers the inner floating roof metering opening 110 to separate the space of the tank body 10 below the inner floating roof 11 from the space above the inner floating roof 11, so that the aviation oil is separated from the external space, the evaporation of the aviation oil can be effectively reduced, the oil loss is reduced, and the safety of the oil storage tank 1 is improved.

In the related art, after the inner floating roof 11 is replaced by new sealing rubber, the sealing performance of the new sealing rubber is good, the toughness is high, so that the dip rod is not easy to drop into the inner floating roof metering opening 110 in the metering process, and in the tape lifting process, the sealing rubber scratches and rubs the surface oil marks of the dip rod tape, so that the reading is difficult, and a large metering error is generated. In addition, after the general sealing rubber is aged, the toughness is deteriorated to cause the opening of the sealing rubber to droop, so that the sealing performance is reduced, the evaporation loss of oil at the metering port of the inner floating roof is increased, and the lower limit of oil-gas explosion at the metering port of the inner floating roof is easily reached to form a mixed explosion space, thereby causing the problem of safety accidents. Compared with the prior art, the oil gauge has the advantages that the metering operation of workers is more convenient, the oil gauge can be conveniently put into the inner floating top metering hole 110, the surface oil marks of the oil gauge belt in the ruler lifting process are prevented from being cut and rubbed, the reading is convenient, the metering error is reduced, the inner floating top metering hole can be well sealed, the evaporation of oil products is reduced, the oil product loss is effectively reduced, and the safety of the oil storage tank 1 is improved.

In some embodiments, the seal cap 2 is sized to match the size of the floating top metering orifice 110 and the seal cap 2 is shaped to match the shape of the floating top metering orifice 110. Under the closed state, the sealing cover 2 can completely seal the inner floating roof metering opening 110, so that the inner floating roof metering opening 110 is light-proof and has good sealing effect, thereby reducing the evaporation of aviation oil.

In some embodiments, the sealing cap 2 includes a cap body 20 rotatably connected to a wall of the floating top metering opening 110, the cap body 20 covers the floating top metering opening 110 in a closed state, and the cap body 20 opens the floating top metering opening 110 in an open state, and the cap body 20 is made of the same material as the floating top 11. In some embodiments, the cover body 20 of the sealing cover 2 is sized to match the size of the floating roof metering orifice 110, the cover body 20 of the sealing cover 2 is shaped to match the shape of the floating roof metering orifice 110, and the cover body 20 may completely cover the floating roof metering orifice 110. In some embodiments, because the inner floating roof 11 may generate static electricity during operation, the material of the inner floating roof 11 is the same as the material of the cover 20, so that the resistivity of the inner floating roof 11 is the same as that of the cover 20, and the inner floating roof 11 and the sealing cover 2 are substantially equipotential, thereby making the inner floating roof 11 and the sealing cover 2 more conductive and safer.

In some embodiments, the inner floating roof 11 is an aluminum alloy inner floating roof, and the cover body 20 is an aluminum alloy cover body, compared with some other metal compounds, the aluminum alloy is lighter and softer, and has an explosion-proof function, so that the inner floating roof 11 and the sealing cover 2 can easily float on the liquid level of the aviation fuel, the safety is higher, the inner floating roof 11 can play a role in reducing the evaporation of the aviation fuel, the cover body 20 is made of the aluminum alloy, and the sealing cover 2 is light in weight, so that a worker can easily open the cover body 20 or close the cover body 20 through the rope pulley device 13 and the take-up device 14.

In some embodiments, the sealing cap 2 is connected to the lower end of the floating roof metering orifice 110 by a hinge 18, and the sealing cap 2 is flipped open downward. The sealing cover 2 can be connected to the lower end of the inner floating roof metering port 110 through a hinge 18, when the metering operation is needed, a worker operates the rope wheel device 13, the sealing cover 2 is downwards turned to be vertical to the sealing cover 2 under the action of self gravity and the hinge 18, and the metering operation of the subsequent worker is not influenced; when the metering operation is completed, the worker operates the take-up device 14, and simultaneously, under the action of the rope wheel device 13, the sealing cover 2 is enabled to be turned upwards around the hinge 18 until the sealing cover 2 is covered with the inner floating roof metering opening 110. The sealing cover 2 is connected to the lower end of the inner floating roof metering port 110, and the sealing cover 2 is turned downwards under the action of self gravity and is opened easily. When the sealing cover is closed, the rope of the rope wheel device 13 exerts upward tension on the sealing cover 2, the tension is larger than the sum of the gravity of the sealing cover 2 and the gravity of the rope 130, so that the sealing cover 2 is tightly abutted against the lower end face of the inner floating roof metering opening 110, the sealing effect is good, and the inner floating roof metering opening 110 is light-tight, so that the evaporation of aviation fuel is reduced.

In some embodiments, the sealing cap 2 includes a cap body 20 rotatably connected to a wall of the floating top metering orifice 110, and a sealing member 21 covering a surface of the cap body 20 facing the floating top metering orifice 110, wherein in a closed state, the cap body 20 covers the floating top metering orifice 110, and the sealing member 21 is sealed between the cap body 20 and an end surface of the floating top metering orifice 110. The sealing member 21 is used for sealing the end faces of the cover body 20 and the inner floating roof metering opening 110 in a covering state, so that the inner floating roof metering opening 110 is light-proof and beneficial to reducing the evaporation of aviation oil. The seal member 21 is provided on the surface of the lid body 20 and is not easily detached.

In some embodiments, the seal 21 is an oil resistant rubber seal 21. The sealing element 2 is made of oil-resistant rubber, wherein the oil-resistant rubber is non-polar oil-resistant fluororubber and has the characteristics of thermal radiation, cold resistance, acid and alkali resistance, corrosive gas resistance, water resistance and the like, so that the service life of the sealing element 21 is prolonged, the inner floating roof metering orifice 110 can be better sealed, the inner floating roof metering orifice 110 is light-tight, and the evaporation of aviation oil is favorably reduced.

In some embodiments, the sealing member 21 is adhered to the surface of the cover 20. The sealing member 21 may be adhered to the surface of the lid body 20 with an adhesive, and the sealing member 21 is not easily detached. In some embodiments, the adhesive may be a natural adhesive. In some embodiments, the shape of the sealing member 21 matches the shape of the surface of the cover body 20, the contact area between the sealing member 21 and the cover body 20 is large, the sealing member 21 is more firmly adhered, and the sealing member 21 is less likely to fall off. In some embodiments, the sealing cover 2 includes blind rivets 17 that secure the sealing member 21 to the cover 20, which may more securely secure the sealing member 21 to the cover 20. The seal 21 is covered on the surface of the lid body 20 facing the floating roof metering port 110, and then the seal 21 can be prevented from falling off by fixing the seal 21 to the center of the seal 21 and the lid body 21 with the blind rivet 17. In other embodiments, the end edge of the inner floating roof metering orifice 110 is provided with a U-shaped sealing ring which can be in sealing abutment with the sealing cover 2 which is covered.

In some embodiments, the sheave device 13 includes a rope 130 and a pulley 131, wherein the pulley 131 is disposed on the wall of the tank top metering hole 15, one end of the rope 130 is connected to the sealing cover 2, and the other end of the rope 130 passes around the pulley 131 and extends out of the wall of the tank top metering hole 15 for turning the sealing cover 2 to switch the sealing cover 2 between a closed state and an open state. Pulley 131 sets up in tank deck metering hole 15's pore wall, avoids occupying the space on tank deck metering hole 15 top, when needs measurement operation, can provide great space for stretching into tank deck metering hole 15 of measurement devices such as dip rod, sampling bucket, thermometer heat preservation box, the staff operation of being convenient for. One end of the rope 130 is connected to the edge of the sealing cover 2 and on the opposite side of the hinge 18, it is convenient for the worker to pull the rope 130 to turn the sealing cover 2. The other end of the cord 130 extends beyond the wall of the top metering hole 15 around the pulley 131 to exit the cord 130 to facilitate turning the sealing lid 2 over the wall of the top metering hole 15 by the combined action of the cord 130 and the pulley 131. When the metering operation is needed, after the worker opens the tank top metering hole 15, the rope 130 is manually pulled down for about 20cm, and the rope 130 is locked by the take-up device 14, so that the sealing cover 2 is automatically opened downwards to be vertical under the influence of the gravity of the sealing cover, the inner floating top metering opening 110 is opened, and the worker can perform the metering operation; when the metering operation is completed, the rope 130 is tightened by the take-up device 14, so that the sealing cover 2 is turned over and covered upwards. The upward drawing force of the rope 130 is larger than the sum of the gravity of the rope 130 and the weight of the sealing cover 2, so that the sealing cover 2 covers the inner floating roof metering opening 110 tightly, the sealing element 21 of the sealing cover 2 is attached to the end face of the inner floating roof metering opening 110 tightly, the sealing effect is good, evaporation of aviation oil is reduced, loss of the aviation oil is reduced, and safety is improved.

In some embodiments, the wall of the top metering hole 15 is provided with a slot 3 communicating the inside and outside of the top metering hole 15, a pulley 131 is mounted in the slot 3, a portion of the pulley 131 is located inside the top metering hole 15, and a portion is located outside the top metering hole 15. Set up fluting 3 on tank deck metering hole 15's pore wall for install pulley 131, a part of pulley 131 is located tank deck metering hole 15, and a part is located outside tank deck metering hole 15 to pulley 131 occupies tank deck metering hole 15's inner space less, can reserve more space and supply measuring instruments such as dipstick, sampling bucket, thermometer heat preservation box and drop into, the input of the measuring instrument of being convenient for. In some embodiments, pulley 131 is a fixed pulley that can be mounted within slot 3 and secured thereto. In some embodiments, the slot 3 may be rectangular, circular, or other shape. The shape of the open groove 3 can be matched with the axial section shape of the pulley 131, so that the gap between the pulley 131 and the open groove 3 is smaller, rainwater can be reduced from entering the tank top metering hole 15, and then rainwater is reduced from entering the tank body 10 of the oil storage tank 1.

In some embodiments, the diameter of the pulley 131 ranges from 10mm to 20 mm. The pulley 131 with the diameter range of 10 mm-20 mm is installed, relatively speaking, the size of the pulley 131 is smaller, the size of the open groove 3 formed in the hole wall of the tank top measuring hole 15 is smaller, and rainwater can be prevented from entering the tank top measuring hole 15 through the open groove 3 and further entering the tank body 10 of the oil storage tank 1.

In some embodiments, the can body 10 includes a top surface 100 that is curved, the top metering hole 15 is located on the top surface 100 and is offset from the center of the top surface 100, and the pulley 131 and the take-up 14 are disposed on a wall of the top metering hole 15 that faces the centerline 16 of the top surface 100 of the can body 10. In the embodiment of fig. 1, the pulley 131 and the wire take-up 14 are disposed on the wall of the tank top metering hole 15 facing the center line 16 of the top surface 100 of the tank 10, and the corresponding worker performs the metering operation on the side of the tank top metering hole 15 opposite to the center line 16 of the top surface 100 of the tank 10, so as to reduce the difficulty of the worker in operation.

In some embodiments, the hinge 18 is disposed corresponding to the pulley 131 in a vertical direction, and one end of the rope 130 is connected to a side of the sealing cover 2 opposite to the hinge 18. When the sealing cover 2 is opened, the rope 130 extends at the same side of the tank top metering hole 15 and the inner floating top metering opening 110, so that the input of a metering device is prevented from being influenced. In some embodiments, a collar may be welded to the side of the sealing lid 2 opposite the hinge 18 to facilitate tightening an end of the cord 130 to connect the end of the cord 130 to the sealing lid 2.

In some embodiments, the oil storage tank 1 includes a rain shield 4, the rain shield 4 being positioned over and/or outside the sheave 131. In some embodiments, the rain-proof cover 4 is disposed above the pulley 131, so as to shield the groove 3 to reduce rainwater entering the tank 10 of the oil storage tank 1. In some embodiments, the rain shield 4 may be a rectangular sheet that is secured to the wall of the top metering hole 15 by welding.

In other embodiments, the rain cover 4 is disposed outside the pulley 131, and can also function to shield the open groove 3, so as to reduce rainwater entering the tank 10 of the oil storage tank 1. The rain cover 4 covers the pulley 131 and the slot 3, and the rope 130 can pass through the rain cover 4 and extend into the take-up device 14. Thus, the function of shielding the open groove 3 is larger, so that the rainwater hardly flows into the tank body 10 of the oil storage tank 1.

In some embodiments, the rope 130 is a stainless steel rope 130. Because the aviation kerosene oil storage tank 1 is an explosion dangerous environment, the rope 130 is made of stainless steel to prevent chemical reaction with aviation kerosene.

In some embodiments, the cords 130 have a diameter in the range of 1.5mm to 4 mm; the weight range of the sealing cap 2 is 40g to 80 g. The maximum inner diameter range of the inner floating roof metering orifice 110 is 100 mm-150 mm. The light in weight of sealed lid 2, the diameter size of rope 130 sets up and makes sealed lid 2 of the enough pulling of intensity of rope 130, and the diameter of rope 130 is minimum as far as possible, so can be so that the size of bearing the pulley 131 of rope 130 can be as little as possible, thereby reduce the inside space of tank deck metering hole 15 that pulley 131 occupy, thereby give the dip rod, the sampling bucket, stretching into tank deck metering hole 15 of metering devices such as thermometer heat preservation box provides great space, be convenient for the staff operation, and pulley 131 is small in size, 3 sizes of corresponding fluting can be less, thereby can reduce rainwater entering. In addition, the diameter of the rope 130 is small, the size of the take-up device 14 can be small, and the rope can be arranged on the outer side of the hole wall of the tank top measuring hole 15, so that the grooving and take-up device 14 can be conveniently arranged on one side of the hole wall of the tank top measuring hole 15. In some embodiments, the diameter of the cord 130 may range from 2mm to 3 mm. In one embodiment, the diameter of the cord 130 is 2 mm. In some embodiments, the cover 20 of the sealing cover 2 is made of aluminum alloy, so that the sealing cover 2 has light weight and the diameter of the rope 130 can be small.

In some embodiments, the wire takeup device 14 is fixed outside the tank top metering hole 15 and is connected to the other end of the cable 130 to receive a portion of the cable 130 and lock the cable 130 when the seal cover 2 is in the closed state and the open state. In the embodiment of fig. 1 and 2, the take-up 14 is fixed outside the tank top metering hole 15, the take-up 14 having a waterproof function. When the metering work is needed, a worker manually pulls the rope 130 down by about 20cm, and locks the rope 130 through the take-up device 14, so that the rope 130 is prevented from continuously falling and causing interference on metering devices; when the metering work is finished, part of the rope 130 can be stored through the wire collecting device 14 until the sealing cover 2 and the inner floating roof metering opening 110 are closed, and then the rope 130 is locked through the wire collecting device 14. In the related art, one is to fasten the edge of the sealing cover 2 by a rope 130, the other end of the rope 130 is fixed on the tank top metering hole 15, the rope 130 is placed long enough, and the sealing cover 2 is pulled by the rope 130 during the metering operation; when the metering operation is not performed, the rope 130 is dragged and dropped on the inner floating roof 11, but this method causes a troublesome operation for workers, requires retracting a large length of the rope 130 to open the sealing cover 2 when the tank level is high, and requires fixing the rope 130 on the tank roof 10. The other rope pulling mode is a counterweight type, the structure of the rope pulling mode is that a rope 130 is wound around a pulley 131, one end of the rope 130 is tied to the edge of a sealing cover 2, the other end of the rope is tied with a heavy hammer to balance the sealing cover 2 with the heavy hammer, however, the method needs to install the pulley in a tank top metering opening 15, the rope is transversely arranged in the tank top metering opening, the pulley and the rope occupy a large space of the tank top metering opening 15, and therefore a sampling barrel and a thermometer heat preservation box are inconvenient to enter and exit. Compared with the prior art, the wire take-up device 14 can automatically take up and pay off wires, and the sealing cover 2 can be opened without retracting the large-section rope 130 when the liquid level of the oil tank is high, so that the operation of workers is simplified. Under the normal operating condition of oil tank, sealed lid 2 is owing to receive the ascending pulling force of rope 130, closely laminates interior floating roof measurement mouth 110 all the time to rope 130 can follow the automatic flexible of the altitude variation of interior floating roof 11, makes things convenient for measurement equipment such as sampling bucket and thermometer heat preservation box to pass in and out.

Fig. 4 shows a cross-sectional view of an embodiment of a wire takeup device 14 provided herein. As shown in fig. 4, the wire rewinding device 14 provided by the present application is an automatic wire rewinding device, and includes a housing 140, a rotating shaft 141, a rewinding drum 142, a spring 143, a rotating disc 144, and a rope outlet 145. Fig. 5 is a cross-sectional view of one embodiment of the connection of the spring 143 of the wire takeup device 14 provided herein to the cable 130. Refer to fig. 4 and 5. In some embodiments, the rotating shaft 141 is disposed at the middle portion of the housing 140, the winding drum 142 is sleeved on the rotating shaft 141, one end of the spring 143 is fixed to the winding drum 142, the other end of the spring 143 is connected to the other end of the rope 130, the rotating shafts 14 are respectively fixed with the rotating discs 144 at the left and right sides of the winding drum 142, and the diameters of the rotating discs 144 are larger than the diameters of the winding drum 142. When the metering operation is needed, the worker pulls down the rope 130 to drive the rotating shaft 141 to rotate, the rope 130 is pulled out for a section and then the pulling down of the rope 130 is stopped, and the turntable 144 plays a role in blocking to lock the rope 130; when the metering operation is completed, the rope 130 can be retracted by the elastic force of the spring 143 until the sealing cover 2 is closed with the inner floating top metering opening 110, and the rotary disc 144 again plays a blocking role to lock the rope 130.

The technical solutions disclosed in the embodiments of the present application can complement each other without generating conflicts.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.