Self-balancing adjusting device and method for floating disc of floating roof tank

Abstract

The invention relates to the technical field of oil storage and transportation, and discloses a self-balancing adjusting device and method for a floating disc of a floating roof tank, the self-balancing adjusting device is applied to the floating disc, and the self-balancing adjusting device comprises an air injection assembly which comprises two main pipes vertically arranged on the floating disc, the two main pipes are oppositely arranged on the two sides of the circle center of the floating disc, and the two main pipes are both connected with a high-pressure inert gas source; pipeline valves are arranged on the two main pipes, air injection pipelines are hinged to the two main pipes, and the two air injection pipelines are oppositely arranged; the two driving parts are connected with the two air injection pipelines respectively; the tilt angle sensor is arranged on the floating disc; the controller is in signal connection with the multiple pipeline valves, the two driving pieces and the tilt angle sensor, and the controller is used for receiving monitoring information of the tilt angle sensor and further used for controlling opening and closing of the two driving pieces and the two pipeline valves; the device is simple in structure and high in automation degree, arrangement of a balance adjusting device can be rapidly completed, balance adjustment can be automatically conducted when the floating disc inclines, and the storage safety of the floating roof tank is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of oil storage and transportation, and particularly relates to a self-balancing adjustment device and method for a floating roof of a floating roof tank. Background Art

[0002] Floating roof tanks are widely used in the petrochemical industry to store volatile liquids such as crude oil and gasoline. Its floating roof floats up and down with the rise and fall of the oil level. Due to the uneven flow of oil caused by the fixed position of the oil inlet of the floating roof tank, the floating roof sinks or rises unevenly, resulting in transient tilting of the floating roof. When the floating roof tilts, it not only affects the storage efficiency of the floating roof tank, but also may cause safety accidents such as leakage of the storage tank, environmental pollution, and even fire and explosion.

[0003] Currently, the floating roof tilt leveling technologies mainly include buoyancy unit adjustment and guide mechanism adjustment. The buoyancy unit adjustment can adjust the buoyancy of the floating roof by increasing or decreasing the buoyancy unit to adapt to the liquid level change in the storage tank, thereby preventing the floating roof from tilting. The guide mechanism adjustment is through the floating roof guide mechanism to evenly distribute the load on the floating roof and reduce the possibility of tilting. However, in actual use, both of the above two adjustment methods involve major structural modifications to the floating roof or the floating roof tank, and the layout process of the floating roof is cumbersome and inconvenient. Summary of the Invention

[0004] The present invention provides a self-balancing adjustment device and method for a floating roof of a floating roof tank to solve the above deficiencies in the prior art. The structure of the self-balancing adjustment device is simple, can be quickly laid out, can automatically perform balance adjustment when the floating roof tilts, and improves the storage safety of the floating roof tank.

[0005] The technical solution of the present invention is: A self-balancing adjustment device for a floating roof of a floating roof tank, which is applied to the floating roof and includes:

[0006] The jet assembly includes two main pipes longitudinally arranged on the floating roof. The two main pipes are relatively arranged on both sides of the center of the floating roof. Both of the two main pipes are connected to a high-pressure inert gas source. Pipeline valves are provided on both of the two main pipes. Jet pipes are hinged on the opposite sides of the two main pipes;

[0007] Two driving members are respectively connected to the two jet pipes and are used to drive the jet pipes to deflect in a plane perpendicular to the floating roof;

[0008] An inclination sensor is arranged on the floating roof and is used to monitor the tilting state of the floating roof;

[0009] The controller is signal-connected to the two pipeline valves, the two driving members, and the inclination sensor. The controller is configured to receive the monitoring information of the inclination sensor, and control the two driving members to drive the two jet pipes to deflect according to the received monitoring information, and control the opening and closing of the multiple pipeline valves.

[0010] In at least one embodiment of the present invention, when the jet pipes level the floating disc, the included angle between the two jet pipes is complementary.

[0011] In at least one embodiment of the present invention, two jet pipes are hinged to each of the two main pipes, and the two jet pipes on each main pipe are longitudinally distributed.

[0012] In at least one embodiment of the present invention, the inclination sensor is a grating inclinometer. There are multiple inclination sensors, and the multiple inclination sensors are evenly distributed at the top edge and the middle position of the floating disc. The multiple inclination sensors are connected in series with each other and are connected to a fiber grating demodulator through an optical fiber. The fiber grating demodulator is signal-connected to the controller.

[0013] In at least one embodiment of the present invention, an alarm system is further included, and the controller is signal-connected to the alarm system.

[0014] In at least one embodiment of the present invention, the air outlets of the multiple jet pipes are all inclined planes.

[0015] In at least one embodiment of the present invention, the driving member is an electric telescopic rod, and the cylinder body and the movable rod of the driving member are respectively hinged to the main pipe and the jet pipe.

[0016] The present invention also discloses a self-balancing adjustment method for a floating disc of a floating roof tank, including the following steps:

[0017] S1: When the oil liquid in the floating roof tank is inclined, the inclination sensor sends the detected inclination information of the floating disc to the controller in real time;

[0018] S2: The controller compares the received inclination angle of the floating disc with the inclination angle threshold stored in the controller in real time;

[0019] S3: When the inclination angle of the floating disc is greater than the inclination angle threshold, the controller controls the two driving members to drive the jet pipe at the high position to deflect away from the floating disc, and the jet pipe at the low position to deflect towards the floating disc according to the inclination information of the floating disc, and ensures that the included angles between the two jet pipes and the main pipe are complementary;

[0020] S4: After completing the adjustment of the jet pipe, the controller controls the opening of the pipe valve so that the inert gas is ejected from the jet pipe, and the reaction force generated by the ejection of the inert gas drives the floating disc to gradually level. When the inclination angle of the floating disc is less than the inclination angle threshold, the controller controls the pipe valve to close, thereby completing the leveling of the floating disc.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. The present invention is provided with a jet assembly composed of a main pipe, a pipe valve, a high-pressure inert gas source, and a jet pipe on the floating disc, and with the cooperation of a driving member, an inclination sensor, and a controller. When the oil liquid in the floating roof tank is inclined, the controller controls the two driving members to drive the jet pipe at the high position to deflect away from the floating disc according to the inclination information of the floating disc, and the jet pipe at the low position deflects towards the floating disc; and the controller controls the opening of the pipe valve so that the inert gas is ejected from the jet pipe, and the reaction force generated by the ejection of the inert gas drives the floating disc to gradually level, thereby completing the leveling of the floating disc. Different from the prior art, the self-balancing adjustment device has a simple structure, a high degree of automation, does not require major structural modifications to the floating disc or the floating roof tank, can quickly complete the layout of the balance adjustment device, and can automatically perform balance adjustment when the floating disc is inclined, improving the storage safety of the floating roof tank.

[0023] 2. When leveling the floating disc, the present invention adjusts the included angles between the two jet pipes and the main pipe to a complementary state through the controller, which can make the couple effect generated by the jet better and more effectively adjust the inclined state of the floating disc. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the floating disc structure of the present invention;

[0026] Figure 3 It is a circuit connection diagram of the present invention.

[0027] Description of the Reference Numerals:

[0028] 1. Floating disc; 2. Jet assembly; 21. Main pipe; 22. Pipe valve; 23. Jet pipe; 3. Driving member; 4. Inclination sensor; 5. Controller; 6. Fiber Bragg grating demodulator. Detailed Embodiments

[0029] The drawings in the present invention are not strictly drawn according to the actual ratio, and the specific dimensions and quantities of each structure can be determined according to actual needs. The drawings described in the present invention are only schematic diagrams.

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0031] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second", and similar terms used in the present invention do not denote any order, quantity, or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "inside", "outside", "above", "below", "far", "near", "front", "rear", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0032] A force system composed of a pair of equal-value, opposite, and non-collinear parallel forces is called a couple. The effect of a couple on a rigid body is to cause the object to rotate. The plane determined by the action lines of the two forces forming the couple is the action plane of the couple, and the perpendicular distance between the two force action lines is the couple arm.

[0033] Currently, for the floating roof tilt leveling technology: one is the buoyancy unit adjustment. By increasing or decreasing the buoyancy unit, the buoyancy of the floating roof can be adjusted to adapt to the liquid level change in the storage tank, thereby preventing the floating disk from tilting. However, it may involve relatively large structural modifications and may require professional technical support during actual operation. The other is the guiding device, which can help maintain a uniform load distribution on the floating roof and reduce the possibility of tilting. However, the guiding device will increase the manufacturing and maintenance costs of the floating disk.

[0034] In view of this, the present invention highlights an economical and efficient floating roof tank tilt detection and self-balancing adjustment, which can ensure that the floating disk remains in a balanced state under any conditions. Reducing human resources, increasing operation efficiency and safety has important engineering significance for ensuring the safe and economical operation of floating roof tanks, but there has been no report on such a device so far.

[0035] Combined with Figures 1 to 3 As shown, a self-balancing adjustment device for a floating disk of a floating roof tank is applied to the floating disk 1 and includes:

[0036] The jet assembly 2 includes two main pipes 21 longitudinally arranged on the floating disc 1. The two main pipes 21 are oppositely arranged on both sides of the center of the floating disc 1. Both of the two main pipes 21 are connected to a high-pressure inert gas source, and pipeline valves 22 are provided on both of the two main pipes 21. Jet pipes 23 are hinged on the opposite sides of the two main pipes 21;

[0037] The two driving members 3 are respectively connected to the two jet pipes 23 and are used to drive the jet pipes 23 to deflect in a plane perpendicular to the floating disc 1;

[0038] The inclination sensor 4 is arranged on the floating disc 1 and is used to monitor the inclination state of the floating disc 1;

[0039] The controller 5 is in signal connection with the two pipeline valves 22, the two driving members and the inclination sensor 4. The controller 5 is used to receive the monitoring information of the inclination sensor 4, and control the two driving members 3 to drive the two jet pipes 23 to deflect according to the received monitoring information, and control the opening and closing of the multiple pipeline valves 22.

[0040] As an alternative embodiment, when the jet pipes 23 level the floating disc 1, the angles between the two jet pipes 23 and the main pipes 21 are complementary; the complementary adjustment can make the couple effect generated by the jet better and more effectively adjust the inclination state of the floating disc 1.

[0041] As an alternative embodiment, two jet pipes 23 are hinged on both of the two main pipes 21; since the floating disc 1 may be inclined in different directions (such as lower on the left and higher on the right, higher on the left and lower on the right, etc.). By arranging two jet pipes 23 with different angle combinations on different main pipes 21, various inclination situations can be flexibly dealt with. According to the definition and properties of the couple, the couple is composed of a pair of equal-value, opposite-direction, non-collinear parallel forces, and its effect on the rigid body is to make the object rotate. During the leveling process of the floating disc 1, the forces formed by the high-pressure nitrogen gas ejected from the two jet pipes 23 on one main pipe 21 constitute a couple. This couple moment can effectively push the inclined floating disc 1 to rotate and make the floating disc 1 return to the horizontal state. Compared with the jet of a single jet pipe 23, the action of the couple can more accurately control the rotation direction and angle of the floating disc 1 and improve the efficiency and accuracy of leveling.

[0042] As an alternative embodiment, the inclination sensor 4 is a grating inclinometer, which has the advantages of accurate angle measurement, stable and reliable measurement results, and real-time dynamic monitoring; there are multiple inclination sensors 4, and multiple inclination sensors 4 are evenly distributed at the top edge of the floating plate 1 and the middle position of the floating plate 1. Multiple inclination sensors 4 are connected in series and connected to a fiber optic grating regulator 6 through optical fiber, and the fiber optic grating regulator 6 is connected to the controller 5 by signal; multiple measurements are performed at different positions of the floating plate 1, and multiple angle data can be obtained. It is possible to monitor the changes in the inclination angle of the floating plate 1 at different positions in real time, so as to fully grasp the overall inclination of the floating plate 1, including the direction, degree and dynamic change trend of the inclination, so as to more accurately reflect the overall inclination state of the floating plate 1.

[0043] As an alternative embodiment, an alarm system is further included. The controller 5 is connected to the alarm system signal. The alarm system is used to be triggered when the floating platform 1 is in a tilted state to alert the staff.

[0044] As an alternative embodiment, the outlet of the jet pipe 23 is an inclined surface; when the jet is injected, the nitrogen will be dispersed and sprayed out at a certain angle, forming a relatively uniform force area on the surface of the floating plate 1, which helps the floating plate 1 to rotate smoothly and reduces the shaking or unbalanced adjustment of the floating plate 1 caused by local uneven force. If the outlet of the jet pipe 23 is a flat direct injection, it may cause the local force to be too large or too small, which is not conducive to the smooth adjustment of the floating plate 1. The high-pressure inert gas source can also be a high-pressure nitrogen source; The high-pressure nitrogen gas ejected from the device forms a pair of force couples, causing the inclined floating plate to rotate and return the floating plate to a horizontal state. The calculated moment = nitrogen density × nitrogen flow × nitrogen flow rate × force arm.

[0045] As an alternative embodiment, the driving member 3 is an electric telescopic rod, and the cylinder body and movable rod of the driving member 3 are respectively hinged to the main pipe 21 and the jet pipe 23. In addition to the electric telescopic rod, a telescopic rod powered by pneumatic or hydraulic power can also be applied here.

[0046] The present invention also discloses a self-balancing adjustment method for a floating roof tank floating plate, comprising the following steps:

[0047] S1: When the oil in the floating roof tank tilts, the tilt sensor 4 sends the detected tilt information of the floating plate 1 to the controller 5 in real time;

[0048] S2: the controller 5 compares the received tilt angle of the floating plate 1 with the tilt angle threshold stored in the controller 5 in real time;

[0049] S3: When the tilt angle of the floating disc 1 is greater than the tilt angle threshold, the controller 5 controls the two driving members 5 to drive the jet pipe 23 at the high position to deflect away from the floating disc 1 according to the tilt information of the floating disc 1, and the jet pipe 23 at the low position to deflect towards the floating disc 1, and ensures that the angles between the two jet pipes 23 and the main pipe 21 are complementary.

[0050] S4: After the adjustment of the jet pipe 23 is completed, the controller 5 controls the pipe valve 22 to open so that the inert gas is ejected from the jet pipe 23, and the floating disc 1 is gradually leveled by the reaction force of the ejected inert gas. When the tilt angle of the floating disc 1 is less than the tilt angle threshold, the controller 5 controls the pipe valve 22 to close, thereby completing the leveling of the floating disc 1.

[0051] The above embodiments are only specific embodiments of the present invention patent, which are used to illustrate the technical solutions of the present invention patent, rather than limiting it. The protection scope of the present invention patent is not limited thereto. Although the present invention patent has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present invention can still modify the technical solutions described in the foregoing embodiments or easily think of changes, or perform equivalent replacements for some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions implemented by the present invention patent, and should all be covered within the protection scope of the present invention.

Claims

1. A self-balancing adjustment device for a floating roof of a floating roof tank, which is applied to the floating roof (1), and is characterized in that, Including: A jet component (2), including two main pipes (21) longitudinally arranged on a floating disc (1), the two main pipes (21) being relatively arranged on both sides of the center of the floating disc (1), both of the two main pipes (21) being connected to an inert gas source, pipeline valves (22) being provided on both of the two main pipes (21), and jet pipes (23) being hinged on the opposite sides of the two main pipes (21); Two driving members (3), respectively connected to the two jet pipes (23), for driving the jet pipes (23) to deflect in a plane perpendicular to the floating disc (1); An inclination sensor (4), arranged on the floating disc (1), for monitoring the inclination state of the floating disc (1); A controller (5), in signal connection with the two pipeline valves (22), the two driving members, and the inclination sensor (4), the controller (5) being configured to receive the monitoring information of the inclination sensor (4), and control the two driving members (3) to drive the two jet pipes (23) to deflect according to the received monitoring information, and control the opening and closing of the two pipeline valves (22).

2. The self-balancing adjustment device for the floating roof of a floating roof tank according to claim 1, characterized in that, When the jet pipes (23) level the floating disc (1), the angles between the two jet pipes (23) and the main pipes (21) are complementary.

3. The self-balancing adjustment device for the floating roof of a floating roof tank according to claim 1, characterized in that, The inclination sensor (4) is a grating inclinometer, and a plurality of the inclination sensors (4) are provided, the plurality of inclination sensors (4) being evenly distributed on the top of the floating disc (1), the plurality of inclination sensors (4) being connected in series with each other and connected to a fiber grating demodulator (6) through an optical fiber, and the fiber grating demodulator (6) being in signal connection with the controller (5).

4. The self-balancing adjustment device for the floating roof of a floating roof tank according to claim 1, characterized in that, Two jet pipes (23) are hinged on both of the two main pipes (21), and the two jet pipes (23) on each main pipe (21) are longitudinally distributed.

5. The self-balancing adjustment device for the floating roof of a floating roof tank according to claim 1, characterized in that, An alarm system is further included, and the controller (5) is in signal connection with the alarm system.

6. The self-balancing adjustment device for a floating roof of a floating roof tank according to claim 1, wherein The driving member (3) is an electric telescopic rod, and the cylinder body and the movable rod of the driving member (3) are respectively hinged to the main pipe (21) and the jet pipe (23).

7. A self-balancing adjustment method for the floating roof of a floating roof tank, based on the self-balancing adjustment device for the floating roof of a floating roof tank described in claim 1, characterized in that, Including the following steps: S1: When the oil liquid in the floating roof tank is inclined, the inclination sensor (4) transmits the detected inclination information of the floating disc (1) to the controller (5) in real time, and the controller (5) compares the received inclination angle of the floating disc (1) with the inclination angle threshold stored in the controller (5) in real time; S2: When the inclination angle of the floating disc (1) is greater than the inclination angle threshold, the controller (5) controls the two driving members (3) to drive the jet pipe (23) at the high position to deflect away from the floating disc (1) and the jet pipe (23) at the low position to deflect towards the floating disc (1) according to the inclination information of the floating disc (1), and makes the angles between the two jet pipes (23) and the main pipes (21) complementary; S3: After the adjustment of the jet pipe (23) is completed, the controller (5) controls the pipe valve (22) to open, so that the inert gas is ejected from the jet pipe (23), and the reaction force generated by the ejection of the inert gas drives the floating disc (1) to gradually level. When the inclination angle of the floating disc (1) is less than the inclination angle threshold, the controller (5) controls the pipe valve (22) to close.

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