Online monitoring system for safe operation of floating roof of storage tank

Abstract

The utility model discloses an on-line monitoring system for safe operation of a storage tank floating roof, which relates to the technical field of inner floating roof storage tanks and comprises a storage tank body, a tank roof and an inner floating disc, the top of the storage tank body is connected with the tank roof, the inner floating disc is arranged in the storage tank body, a tank roof inspection hole is arranged on the tank roof, and the inner floating disc is connected with the tank roof inspection hole. A plurality of groups of fixed connecting pipes are arranged at the top of the tank top, the fixed connecting pipes are communicated with the interior of the storage tank body, the fixed connecting pipes are circumferentially arranged at equal intervals, monitoring equipment is arranged in the fixed connecting pipes, the monitoring equipment is further connected with the inner floating disc, and the monitoring equipment is used for monitoring the running state of the inner floating disc. The operation state of the inner floating disc is monitored through the level meter and the reflecting plate, whether emission of VOCs in the storage tank body exceeds the standard or not is monitored through the VOCs detection sensor, monitoring data are transmitted to a control room, an alarm is given out when the monitored data exceed the standard, and hidden danger can be found in time, and accident expansion is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of internal floating roof storage tanks, in particular to an online monitoring system for the safe operation of the floating roof of a storage tank. Background Art

[0002] During operation, internal floating roof tanks can experience unexpected conditions such as tilting and partial sinking due to factors such as the internal floating roof's selection, design, product quality, installation quality, variations in operating process parameters, and service life. This can ultimately lead to chucks or even sinking. However, the floating roof inspection cycle (opening the tank roof inspection hole) is typically less than six months, making it difficult to detect safety hazards in a timely manner. Consequently, excessive VOC (volatile organic compound) emissions from the tanks due to unexpected floating roof conditions can also be detected in a timely manner, posing a significant safety hazard. Therefore, an online monitoring system for the safe operation of tank floating roofs is urgently needed to address these issues. Utility Model Content

[0003] The purpose of the embodiments of the present utility model is to provide an online monitoring system for the safe operation of a floating roof of a storage tank, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] An online monitoring system for the safe operation of a tank floating roof comprises: a tank body, a tank roof and an inner floating plate, wherein the top of the tank body is connected to the tank roof, the inner floating plate is provided inside the tank body, a tank roof inspection hole is provided on the tank roof, a plurality of groups of fixed pipes are provided on the top of the tank roof, the fixed pipes are communicated with the interior of the tank body, the fixed pipes are arranged in a circle at equal intervals, a monitoring device is provided inside the fixed pipes, the monitoring device is also connected to the inner floating plate, and the monitoring device is used to monitor the operating status of the inner floating plate.

[0006] As a further solution of the present invention: the monitoring equipment includes: a level meter, a VOCs detection sensor and a reflective plate. The VOCs detection sensor is arranged in the fixed pipe, the level meter is installed on the fixed pipe, and the inner floating plate is provided with several groups of reflective plates matching the level meter.

[0007] As a further solution of the present invention: a guide tube is provided on the tank top, the guide tube is communicated with the interior of the tank body, and a liquid level gauge is provided inside the guide tube for monitoring the liquid level height inside the tank body.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] The utility model monitors the operating status of the inner float through a level meter and a reflector plate, monitors whether VOCs emissions inside the storage tank body exceed the standard through a VOCs detection sensor, transmits the monitoring data to a control room, and issues a warning when the monitored data exceeds the standard. The utility model can timely discover hidden dangers and avoid the expansion of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The diagram is a structural diagram of an online monitoring system for the safe operation of a tank floating roof.

[0011] In the figure: 1. Storage tank body; 2. Tank top; 3. Tank top inspection hole; 4. Fixed connecting pipe; 5. Guide pipe; 6. Liquid level gauge; 7. Inner float; 8. Reflector; 9. Level gauge; 10. VOCs detection sensor. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0013] In this utility model embodiment, please refer to Figure 1 An online monitoring system for the safe operation of a tank floating roof comprises a tank body 1, a tank roof 2 and an inner floating plate 7. The top of the tank body 1 is connected to the tank roof 2. The inner floating plate 7 is provided inside the tank body 1. The tank roof 2 is provided with a tank roof inspection hole 3. The top of the tank roof 2 is provided with a plurality of groups of fixed pipes 4, the fixed pipes 4 being connected to the interior of the tank body 1. The fixed pipes 4 are arranged circumferentially at equal intervals. A monitoring device is provided inside the fixed pipes 4, and the monitoring device is also connected to the inner floating plate 7. The monitoring device is used to monitor the operating status of the inner floating plate 7.

[0014] The monitoring equipment includes: a level meter 9, a VOCs detection sensor 10 and a reflector 8. The VOCs detection sensor 10 is provided in the fixed pipe 4, the level meter 9 is installed on the fixed pipe 4, and the inner floating plate 7 is provided with several groups of reflectors 8 matching the level meter 9;

[0015] A guide tube 5 is provided on the tank top 2 , and the guide tube 5 is communicated with the interior of the tank body 1 . A liquid level gauge 6 is provided inside the guide tube 5 for monitoring the liquid level height inside the tank body 1 .

[0016] The operating status of the inner float 7 is monitored by the level meter 9 and the reflector 8, and the VOCs detection sensor 10 is used to monitor whether the VOCs emissions inside the storage tank body 1 exceed the standard. The monitoring data is transmitted to the control room, and when the monitored data exceeds the standard, a warning is issued. After the alarm, the inspection and maintenance personnel immediately open the inspection hole 3 on the tank top for inspection and maintenance.

[0017] Before commissioning, first make sure that the monitoring data (height) of level meter 9 and the monitoring data (height) of liquid level meter 6 are not less than 60mm (partially submerged) and not more than 120mm (partially suspended). If the range is exceeded, an alarm will be issued immediately.

[0018] When loading and unloading, the monitoring frequency of the level meter 9 and the VOCs detection sensor 10 should not be greater than 1 time / 0.5 hours. When in a stationary state, the monitoring frequency of the level meter 9 and the VOCs detection sensor 10 should not be greater than 1 time / 6 hours.

[0019] When the VOCs detection sensor 10 detects that the VOCs concentration exceeds 5000ppm, it will immediately alarm. At this time, the alarm light will be yellow, warning the staff to pay attention and observe; when it is detected that the VOCs concentration exceeds 20000ppm, the alarm light will be red, warning the staff to carry out maintenance work immediately.

[0020] In this embodiment, a tilt model of the inner floating plate 7 can be formed according to the different monitoring data of several groups of level meters 9 to display the tilt angle.

[0021] In this embodiment, the level meter 9 may be a radar level meter or a laser rangefinder with an accuracy of ±5 mm.

[0022] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0023] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An online monitoring system for safe operation of a tank floating roof, comprising: The tank body, tank top and inner floating plate, the top of the tank body is connected to the tank top, and the inner floating plate is provided inside the tank body. It is characterized in that a tank top inspection hole is provided on the tank top, and several groups of fixed pipes are provided on the top of the tank top. The fixed pipes are connected to the inside of the tank body, and the fixed pipes are arranged in a circle with equal intervals. A monitoring device is provided inside the fixed pipe, and the monitoring device is also connected to the inner floating plate. The monitoring device is used to monitor the operating status of the inner floating plate.

2. The online monitoring system for safe operation of a tank floating roof according to claim 1 is characterized in that: The monitoring equipment includes: a level meter, a VOCs detection sensor and a reflective plate. The VOCs detection sensor is arranged in the fixed pipe, the level meter is installed on the fixed pipe, and the inner floating plate is provided with several groups of reflective plates matching the level meter.

3. The online monitoring system for safe operation of a tank floating roof according to claim 1 is characterized in that: A guide tube is provided on the tank top, the guide tube is communicated with the interior of the storage tank body, and a liquid level gauge is provided inside the guide tube for monitoring the liquid level height inside the storage tank body.

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