CN220683485U - Oil storage tank sling bracket floating disc device - Google Patents

Abstract

The utility model discloses a suspension cable bracket floating disc device of an oil storage tank, which comprises a tank body, a floating disc, a bracket and a lifting device; the bracket is movably arranged in the tank body, the bracket is of a planar rice-shaped structure, a first framework of a polygonal structure is connected to the bracket, a guide wheel matched with the inner wall of the tank body is arranged at the outer end of the bracket, a supporting leg rotationally connected with the bracket is arranged at the joint of the bottom of the bracket and the first framework, and a sling is arranged at the joint of the bracket and the first framework; the floating disc is movably arranged in the tank body and is positioned above the bracket, a through hole for the sling to pass through is formed in the floating disc, and a ventilation valve matched with the sling is arranged at the position, positioned at the through hole, of the upper side of the floating disc; the top in the jar body is equipped with the bow member with jar body top looks adaptation, and the hoist cable passes the bow member and extends to jar outside, and jar body top corresponds hoist cable department and is equipped with the shaft, is equipped with hoisting device on the jar body, and the hoist cable passes the shaft and links to each other with hoisting device.

Description

Oil storage tank sling bracket floating disc device

Technical Field

The utility model relates to the technical field of oil storage tanks, in particular to a floating disc device for a sling bracket of an oil storage tank.

Background

When the floating disc of the existing inner floating roof oil tank falls to the bottom of the tank along with the liquid level in the tank, the whole floating disc is supported by a plurality of supporting legs. The height of the support is two: one is the lowest position of the float and the other is the height of the float when the tank or float is serviced. In order to fully utilize the effective volume in the tank, the former is not more than 0.9m, and the latter is not less than 1.8m, so as to facilitate maintenance.

Ten prescriptions of fire and explosion prevention for oil and gas tank areas: 'floating disc falls to the bottom in the operation of a forbidden inner floating roof storage tank'; the design specification of the vertical cylindrical steel welding oil tank also provides that: the vertical distance between the bottom of the outer edge of the inner floating disc and the upper surface of the tank bottom is not less than 1.8 m; the internal floating roof tank process safety management supplementary regulation also makes regulations for height: when the inner floating roof tank normally receives and pays oil, the lowest liquid level is controlled to be 200mm above the liquid level when the inner floating roof is at the supporting height; the maximum liquid level should be controlled 300mm below the maximum design liquid level height.

In order to ensure that the float is lowered to its lowest position, it must not collide with the ancillary facilities in the tank. In general, in the actual operation of the tank, the refinery or the oil depot sets the minimum level of the stored oil in the tank to a height of about 2m from the tank floor. I.e. a floating disc that normally runs in an oil tank, the actual thickness of which is 2m.

In the prior art, the lowest control height of the oil level in the tank is set on the premise that a floating disc can not touch an obstruction in the tank (an accessory in the tank) when floating in the tank, so that the lowest falling position of the floating disc is set. The legs are determined on the basis that the solvent is minimized to support the legs of the float, i.e. the leg height.

The main problems of the existing inner floating roof oil tank are as follows: when the tank is in operation, a level of 2m is the lowest limit of the float, which limits the spatial position of the tank level operation. Namely, the landing leg, the floating disc, the liquid level limit height and the like jointly form a hollow height of 2m thickness in the tank, and the hollow height actually occupies the effective use volume of the oil tank.

A plurality of fixed supporting legs are arranged on the floating disc beam. When the tank wall manhole is opened by a worker during oil tank maintenance, when the tank is ready for cleaning, a plurality of supporting legs are erected at the bottom of the tank, so that a construction operation surface cannot be unfolded, engineering tools for efficiently cleaning the sludge cannot be used, the constructor can only clean the sludge at the bottom of the tank through manual operation, the working efficiency is extremely low, and the waste of the oil tank cleaning cost is actually caused.

The problems of the prior art are: to ensure that the float is not bumped against the tank bottom attachment when the float is at the supporting height. When the oil is emptied and the floating disc falls to the bottom, the narrow space formed by landing a plurality of supporting legs limits the expansion of construction operations such as cleaning in the tank or maintenance of accessories.

Moreover, the existing floating disc is manufactured to be heavier and heavier, so that the floating disc framework cannot bear the tension of the sling; at the same time, the roof is thinned due to corrosion in the service cycle, so that the load of the roof is limited.

Meanwhile, the existing floating disc expands from aluminum alloy to stainless steel, and evolves from an immersed floating disc to a full-liquid-receiving box type floating disc. In addition to the substantial increase in the weight of the float, the material price is also increasing, which results in a doubling of the manufacturing costs.

The existing floating disc is made of metal materials such as aluminum, steel and the like, is actually a whole aluminum plate or steel plate, and can change the roundness to a certain extent due to the settlement of a storage tank foundation, so that accidents of the floating disc chuck occur when the storage tank runs.

Therefore, a suspension cable bracket floating disc device of an oil storage tank is provided to solve the existing defects.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the oil storage tank sling bracket floating disc device.

In order to solve the technical problems, the technical scheme provided by the utility model is that the oil storage tank sling bracket floating disc device comprises: comprises a tank body, a floating disc, a bracket and a lifting device;

the bracket is movably arranged in the tank body, the bracket is of a planar rice-shaped structure, a first framework of a polygonal structure is connected to the bracket, a guide wheel matched with the inner wall of the tank body is arranged at the outer end of the bracket, a supporting leg rotationally connected with the bracket is arranged at the joint of the bottom of the bracket and the first framework, and a sling is arranged at the joint of the bracket and the first framework;

the floating disc is movably arranged in the tank body and is positioned above the bracket, a through hole for the sling to pass through is formed in the floating disc, and a ventilation valve matched with the sling is arranged at the position, positioned at the through hole, of the upper side of the floating disc;

the tank is characterized in that an arch frame matched with the top of the tank is arranged at the top of the tank, the sling penetrates through the arch frame and extends to the outer side of the tank, an axle is arranged at the top of the tank corresponding to the sling, a lifting device is arranged on the tank, and the sling penetrates through the axle and is connected with the lifting device.

As an improvement, the floating disc is made of polyethylene and styrene-butadiene rubber.

As an improvement, the floating disc is any one of a floating box structure and a bag structure.

As an improvement, one end of the sling close to the bracket is provided with a supporting ring matched with the ventilation valve.

As an improvement, the lower part of the ventilation valve is provided with a column foot which penetrates through the through hole and extends to the lower side of the floating disc.

As an improvement, the arch frame is of an arch-shaped structure in a shape like a Chinese character 'mi', and a second framework of a polygonal structure which is arranged corresponding to the first framework is connected to the arch frame.

As an improvement, the sling penetrates through the connection part of the arch frame and the framework II.

As an improvement, the lifting device is positioned at the top of the tank body.

As an improvement, the lifting device is positioned at the lower part of the outer side of the tank body.

Compared with the prior art, the utility model has the advantages that:

1. through the separated structure of the bracket and the floating disc, and the arrangement of the arch frame, the floating disc can adapt to the aims of newly-built oil storage tanks and the transformation of old oil storage tanks, so that the floating disc hovers at a preset height;

2. the floating disc is made of polyethylene and styrene-butadiene rubber, replaces noble metal materials such as aluminum alloy, stainless steel and the like, greatly reduces material cost and installation cost, and simultaneously can avoid the phenomenon of a floating disc chuck caused by tank deformation due to the self-adjusting function of the floating disc;

3. through the arrangement of the guide wheels at the outer end of the bracket, the stability of the bracket moving in the tank body along the axial direction can be ensured;

drawings

FIG. 1 is a schematic view of an embodiment of a suspension arm tray assembly for an oil storage tank according to the present utility model.

Fig. 2 is a front view of an embodiment of a tank sling bracket float assembly according to the present utility model.

Fig. 3 is a schematic view showing an internal structure of an embodiment of a suspension arm floating disc device for an oil storage tank according to the present utility model.

Fig. 4 is a top view of an embodiment of a tank sling bracket float assembly according to the present utility model.

Fig. 5 is a cross-sectional view at A-A in fig. 4.

Fig. 6 is a schematic structural view of an arch portion of a suspension arm bracket floating disc device for an oil storage tank according to the present utility model.

Fig. 7 is a schematic view of a bracket portion of a suspension arm bracket floating disc device for an oil storage tank according to the present utility model.

Fig. 8 is a schematic diagram of a second embodiment of a bracket portion of a suspension arm bracket floating disc device for an oil storage tank according to the present utility model.

Fig. 9 is a schematic view of another embodiment of a suspension arm tray float device for an oil storage tank according to the present utility model.

Figure 10 is a schematic view of the structure of the vent valve portion of another embodiment of a tank sling bracket float assembly of the present utility model.

As shown in the figure: 1. the tank body, 2, the floating disc, 3, the bracket, 4, the lifting device, 5, the first framework, 6, the guide wheel, 7, the landing leg, 8, the sling, 9, the through hole, 10, the vent valve, 11, the arch frame, 12, the wheel shaft, 13, the support ring, 14, the column base, 15 and the second framework.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the inventive embodiments generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

In the description of the embodiments of the utility model, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang" and the like, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the utility model, "plurality" represents at least 2.

In the description of the embodiments of the utility model, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the utility model will be understood by those skilled in the art according to the specific circumstances.

Referring to the attached drawings, the oil storage tank sling bracket floating disc device comprises a tank body 1, a floating disc 2, a bracket 3 and a lifting device 4;

specifically, the structure of the tank body 1 may be set according to practical situations, in this embodiment, the tank body 1 is a hollow columnar structure, and the top of the tank body 1 is an arch structure;

the bracket 3 is movably arranged in the tank body 1, the bracket 3 is positioned at the bottom of the tank body 1 in the actual use process, the bracket 3 is in a planar rice-shaped structure, and the bracket 3 can also adopt a grid plate structure in the concrete implementation process; the bracket 3 is connected with a framework I5 with a polygonal structure, and the structural stability of the bracket 3 can be effectively ensured through the arrangement of the framework I5; meanwhile, in the embodiment, the first framework 5 is in a regular hexagon shape, the materials of the bracket 3 and the first framework 5 can be selected according to practical situations, in the embodiment, the bracket 3 and the first framework 5 are made of stainless steel, so that the rigidity and the stability of the integral structure of the bracket are ensured, the corrosion resistance of the bracket is ensured, and the service life of the bracket 3 is prolonged.

The outer end of the bracket 3 is provided with a guide wheel 6 matched with the inner wall of the tank body 1, the guide wheel 6 ensures that the bracket 3 moves in the tank body 1, the clamping position of the bracket 3 in the tank body 1 is avoided, and further, the joint of the guide wheel 6 and the bracket 3 has certain elasticity, so that the influence on the movement of the bracket 3 in the tank body 1 when the tank body 1 is partially deformed can be avoided.

The bottom of the bracket 3 is provided with supporting legs 7 which are rotationally connected with the bracket 3 at the joint with the first framework 5, specifically, the supporting legs 7 are axially equidistantly arranged around the axis of the bracket 3, and in actual implementation, the supporting legs 7 and the bracket 3 keep a parallel folding state, and in the use process, the supporting legs 7 and the bracket 3 are arranged in a vertical state to realize the support of the bracket 3;

meanwhile, in order to ensure the support of the brackets 3 at different heights, the support legs 7 are of a length-adjustable structure, so that the brackets 3 can be positioned at the lowest position in the tank body 1 and at the proper position during maintenance.

In the specific implementation process, when the floating disc 2 is required to be overhauled, the supporting legs 7 and the floating disc 2 are kept in a 90-degree supporting state, and the supporting legs 7 are used for supporting the bracket 3, so that the floating disc 2 is supported, namely the floating disc 2 is supported; after the overhaul is finished, the supporting legs 7 and the floating disc 2 are kept in a parallel folding state;

the sling 8 is arranged at the joint of the bracket 3 and the first framework 5, and when the sling is actually arranged, the first framework 5 is in a regular hexagon, and r is the distance from the joint of the bracket 3 and the first framework 5 to the circle center; taking R as the radius of the tank body 1, the formula is as follows: pi R2=1/2 pi R2, yielding r=0.707R. That is, the load point with uniform symmetry on the circumference of 0.707R is the minimum value of the stress of the sling, and the framework one 5 is arranged.

The sling 8 is arranged to realize lifting operation of the bracket 3; specifically, the number of slings 8 may be set according to practical situations, and in this embodiment, the number of slings 8 is 6, that is, the same as the number of joints between the first frame 5 and the bracket 3.

In this embodiment, the sling 8 is a steel wire rope, and similarly, the material of the sling 8 may be selected according to the actual situation;

in the concrete implementation, through the lifting operation of the sling 8, the position required to be reached when the bracket 3 is in a dynamic state or a static state in the tank body 1 is ensured, and the position of the floating disc 2 in the tank body 1 is adjusted according to actual conditions.

The floating disc 2 is movably arranged in the tank body 1 and is positioned above the bracket 3, the shape of the floating disc 2 is matched with the inner wall of the tank body 1, specifically, the material of the floating disc 2 can be set according to actual conditions, in the embodiment, the floating disc 2 is made of polyethylene, specifically, the floating disc 2 can be in a floating box structure; in specific implementation, the floating disc 2 can adopt an integral floating box structure;

likewise, can also adopt the structural style that a plurality of monomer buoyancy tanks structure assembled, monomer buoyancy tank structure adopts punching blow molding one shot forming, reduces manufacturing cost, simultaneously, adopts the fastener to assemble into whole floating disc 2 with the monomer buoyancy tank when adopting a plurality of monomer buoyancy tank structure to assemble, reduces on-the-spot installation cost.

Also, as another embodiment, the floating disc 2 is made of styrene-butadiene rubber, and specifically, the floating disc 2 adopts a bag structure. Also, in practice, the plastic lattice structure may be provided as a mounting structure for the pockets that are placed within each lattice of the plastic lattice structure.

In the specific implementation process, an oil-resistant styrene-butadiene rubber plate is fully paved on the upper surface of the floating disc 2, and gaps and all through holes 9 of the floating box 2 are sealed. Meanwhile, by using high-density polyethylene and styrene-butadiene rubber, the material cost can be obviously reduced by replacing noble metal materials such as aluminum alloy, stainless steel and the like;

the floating disc 2 is provided with a through hole 9 for a sling 8 to pass through, the inner top of the tank body 1 is provided with an arch 11 matched with the top of the tank body 1, specifically, the arch 11 is of an arch-shaped rice-shaped structure, and the arch 11 is connected with a framework II 15 of a polygonal structure which is arranged corresponding to the framework I5.

In specific implementation, a limiting supporting plate is arranged at the upper part in the tank body 1, and the lower end of the arch 11 is clamped with the limiting supporting plate to fix the arch 11 in the tank body 1;

the sling 8 passes through the arch 11 and extends to the outer side of the tank body 1, and specifically, the sling 8 passes through the connection part of the arch 11 and the framework two 15.

In practical implementation, the arch 11 is detachably arranged at the inner top of the tank 1, and the connection part of the arch 11 and the second framework 15 is used as a supporting point of the sling 8, namely, the acting point of the sling 8 for pulling the bracket 3 upwards

The upper side of the floating disc 2 is provided with a vent valve 10 matched with the sling 8 at the position of the through hole 9, and the pressure relief between the oil surface in the tank body 1 and the floating disc 2 can be realized through the arrangement of the vent valve 10, so that the deformation of the floating disc 2 is prevented;

in this embodiment, a supporting ring 13 matched with the ventilation valve 10 is arranged at one end of the sling 8 close to the bracket 3, and in the process of pulling up the sling 8, the supporting ring 13 moves upwards through the through hole 9, when the bracket 3 is about to contact with the floating disc 2, the supporting ring 13 opens the ventilation valve 10, and pressure relief between the oil surface in the tank 1 and the floating disc 2 is realized;

as another embodiment, a column foot 14 penetrating through the through hole 9 and extending to the lower side of the floating disc 2 is arranged at the lower part of the ventilation valve 10, and when the suspension cable 8 is pulled upwards, the column foot 14 contacts with the bracket 3 when the bracket 3 is about to contact with the floating disc 2, so as to realize the opening of the ventilation valve 10, and further realize the pressure relief between the oil level in the tank 1 and the floating disc 2;

the wheel shaft 12 is arranged at the position, corresponding to the sling 8, of the top of the tank body 1, so that the vertical lifting operation of the sling 8 on the bracket 3 can be ensured, the uniformity of stress of the bracket 3 is ensured, and the moving stability of the bracket 3 in the tank body 1 is ensured;

the lifting device 4 is arranged on the tank body 1, and the sling 8 passes through the wheel shaft 12 to be connected with the lifting device 4. In particular, the lifting device 12 may be of manual type, as well as of electric type, the lifting device 12 may be of electric type,

in this embodiment, the lifting device 4 is located at the top of the tank 1, and the lifting operation of the bracket 3 is further implemented by contracting the sling 8 through the operation of the lifting device 12, so as to achieve the lifting operation of the floating disc 2;

as another embodiment, the lifting device 4 is located at the lower part of the outer side of the tank body 1, and the lifting operation of the bracket 3 is further realized through the contraction of the sling 8 by operating the lifting device 12 so as to achieve the lifting operation of the floating disc 2;

in the practice of the present utility model,

after the device is installed in the tank body 1, when no medium exists in the tank body 1, the length of the sling 8 is calibrated, the stress intensity of the sling 8 is tested, water can be sprayed between the inner wall of the tank body 1 and the floating disc 2 in the testing process, the lubrication of the tank wall is increased, and then the effect of protecting the floating disc 2 is achieved.

In the process of filling water into the tank body 1, the device is continuously subjected to tracking test calibration according to different heights such as high level, middle level, low level and the like of the liquid level, and data are reserved.

Before the accessories such as a manhole, a light hole and the like of the tank body 1 are closed and oil is ready to be fed, the bracket 3 is positioned at the inner bottom of the tank body 1, and the floating disc 2 is positioned on the bracket 3.

In the process of oil feeding in the tank body 1, the bracket 3 is always positioned at the inner bottom of the tank body 1, and the floating disc 2 can be lifted along with the lifting of the liquid level in the tank body 1.

Before the running period (3-5 years) of the oil tank is finished, the height of the floating disc 2 is preset according to relevant regulations, then the lifting device 4 is operated to lock the length of the sling 8, and the floating disc 2 is suspended in a preset position in the tank body 1 by the bracket 3.

Along with the continuous decline of liquid level in the jar body 1, the nitrogen gas is filled into according to the requirement in the jar body 1, after the medium in the jar body 1 is evacuated, carries out water washing, opens the manhole ventilation, detects the safety back, reaches the condition of intaking.

A floating disc operator enters the tank body 1, puts down the supporting legs 7 at the lower part of the bracket 3, and overhauls the floating disc 2; when the tank is cleaned, the supporting legs 7 can be retracted, the floating disc 2 can be moved up and down or hovered at a proper height in the tank body 1 by the sling 8, and various maintenance operations in the tank body 1 can be carried out.

The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims (9)

1. The utility model provides an oil storage tank hoist cable bracket floating plate device which characterized in that: comprises a tank body (1), a floating disc (2), a bracket (3) and a lifting device (4);

the bracket (3) is movably arranged in the tank body (1), the bracket (3) is of a planar rice-shaped structure, a first framework (5) of a polygonal structure is connected to the bracket (3), a guide wheel (6) matched with the inner wall of the tank body (1) is arranged at the outer end of the bracket (3), a supporting leg (7) rotationally connected with the bracket (3) is arranged at the joint of the bottom of the bracket (3) and the first framework (5), and a sling (8) is arranged at the joint of the bracket (3) and the first framework (5);

the floating disc (2) is movably arranged in the tank body (1) and is positioned above the bracket (3), a through hole (9) for a sling (8) to pass through is formed in the floating disc (2), and a ventilation valve (10) matched with the sling (8) is arranged at the position, positioned at the through hole (9), of the upper side of the floating disc (2);

the top is equipped with bow member (11) with jar body (1) top looks adaptation in the jar body (1), hoist cable (8) pass bow member (11) and extend to jar body (1) outside, jar body (1) top corresponds hoist cable (8) department and is equipped with shaft (12), be equipped with hoisting device (4) on jar body (1), hoist cable (8) pass shaft (12) and hoisting device (4) link to each other.

2. The storage tank sling bracket float device of claim 1 wherein: the floating disc (2) is made of polyethylene and styrene-butadiene rubber.

3. The storage tank sling bracket float device of claim 1 wherein: the floating disc (2) is any one of a floating box structure and a bag structure.

4. The storage tank sling bracket float device of claim 1 wherein: one end of the sling (8) close to the bracket (3) is provided with a supporting ring (13) matched with the ventilation valve (10).

5. The storage tank sling bracket float device of claim 1 wherein: the lower part of the ventilation valve (10) is provided with a column foot (14) which penetrates through the through hole (9) and extends to the lower side of the floating disc (2).

6. The storage tank sling bracket float device of claim 1 wherein: the arch frame (11) is of an arch-shaped structure in a shape like a Chinese character 'mi', and a framework two (15) of a polygonal structure which is arranged corresponding to the framework one (5) is connected to the arch frame (11).

7. The oil tank sling bracket float device of claim 6 wherein: the sling (8) passes through the connection part of the arch (11) and the framework II (15).

8. The storage tank sling bracket float device of claim 1 wherein: the lifting device (4) is positioned at the top of the tank body (1).

9. The storage tank sling bracket float device of claim 1 wherein: the lifting device (4) is positioned at the lower part of the outer side of the tank body (1).