Combustible gas concentration monitoring system for inner floating roof storage tank

Abstract

A combustible gas concentration monitoring system for an inner floating roof storage tank comprises a rotary carrying holder and a plurality of oil depot storage tanks, the oil depot storage tanks are evenly arranged outside the rotary carrying holder at equal intervals in a surrounding mode, and a passive Fourier infrared telemetry analyzer is installed above the rotary carrying holder. A plurality of monitoring holes are evenly formed in the upper portion of the side surface of the oil depot storage tank in a surrounding mode, and monitoring ports of the passive Fourier infrared telemetry analyzer correspond to the monitoring holes. The signal output end of the passive Fourier infrared telemetering analyzer is connected with the central control system through a communication interface, the signal output end of the central control system is connected with the signal input end of the alarm device, and the signal output end of the central control system is further connected with the control port of the rotary carrying holder. According to the invention, the defects in the prior art are overcome, efficient and accurate gas concentration monitoring is realized, and the safety and management efficiency of the storage tank area are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of safety monitoring of storage tanks in the petrochemical industry, and particularly relates to a combustible gas concentration monitoring system for an internal floating roof storage tank. Background Art

[0002] At present, during the operation of internal floating roof storage tanks in petrochemical enterprises, since the internal floating disk does not contact the liquid surface, as the service life of the internal floating disk increases, the sealing performance deteriorates, resulting in the oil and gas concentration in the tank usually being above 2000 ppm, and the phenomenon of the concentration value exceeding 10000 ppm occurs commonly. At the same time, due to the complex gas phase space components and high environmental humidity in the internal floating roof storage tank, it is easy to cause corrosion of the internal floating disk, and the daily inspection and maintenance of the internal floating disk are relatively difficult, making it difficult to detect the leakage of the floating disk in a timely manner.

[0003] Existing monitoring means rely on manual inspection. Operators need to carry portable gas detectors to climb the storage tank for detection, which has the following defects: (1) The interval of manual inspection is long, and it is difficult to detect gas leakage in a timely manner; (2) The gas phase space inside the storage tank is complex, and traditional equipment cannot monitor the gas concentration in the internal floating roof storage tank; (3) Personnel need to enter a high-risk environment, which poses a safety risk. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a combustible gas concentration monitoring system for an internal floating roof storage tank, which overcomes the deficiencies of the prior art, is reasonably designed, realizes efficient and accurate gas concentration monitoring, and greatly improves the safety and management efficiency of the storage tank area.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0006] A combustible gas concentration monitoring system for an internal floating roof storage tank includes a rotating and carrying cloud platform and a plurality of oil depot storage tanks. The oil depot storage tanks are evenly and equidistantly arranged around the outside of the rotating and carrying cloud platform. A passive Fourier transform infrared remote analyzer is installed above the rotating and carrying cloud platform. A plurality of monitoring holes are evenly arranged around the upper side surface of the oil depot storage tank. The monitoring ports of the passive Fourier transform infrared remote analyzer correspond to each monitoring hole;

[0007] The signal output end of the passive Fourier transform infrared remote analyzer is connected to the central control system through a communication interface. The signal output end of the central control system is connected to the signal input end of the alarm device, and the signal output end of the central control system is also connected to the control port of the rotating and carrying cloud platform.

[0008] Preferably, the rotating and mounting pan-tilt includes a moving platform. A support frame is vertically installed above the moving platform. A lifting slide table module is installed on the side of the support frame. A bearing platform is slidably connected to the side of the lifting slide table module through a slider. A pan-tilt motor is installed on the bearing platform. A bearing frame is fixedly installed on the rotating shaft of the pan-tilt motor. Both sides of the passive Fourier transform infrared remote sensing analyzer are respectively rotationally connected to the middle of the bearing frame through a rotating shaft. A bearing is provided at the connection between the rotating shaft and the bearing frame. One end of an electric telescopic rod is rotationally connected to the bearing frame, and the other end of the electric telescopic rod is connected to the passive Fourier transform infrared remote sensing analyzer.

[0009] Preferably, a light guiding component is arranged outside the monitoring hole. The light guiding component includes a condenser housing and a condenser lens. The condenser housing is arranged in a horn-shaped structure. The small-mouth end of the condenser housing is fixedly installed on the outside of the oil storage tank. A prism is fixedly installed in the inner cavity of the condenser housing near the small-mouth end. The condenser lens is fixedly installed in the inner cavity of the condenser housing near the large-mouth end. The focal point of the condenser lens is located inside the condenser housing and is converted into parallel light through the prism.

[0010] Preferably, the condenser lens adopts a coated zinc selenide lens.

[0011] Preferably, an attitude sensor and an RTK positioning module are installed on the passive Fourier transform infrared remote sensing analyzer. The signal output ends of the attitude sensor and the RTK positioning module are connected to the signal input end of the central control system.

[0012] The present invention provides an internal floating roof storage tank combustible gas concentration monitoring system, which has the following beneficial effects: By installing the passive Fourier transform infrared remote sensing analyzer on the rotating and mounting pan-tilt and fixing the rotating and mounting pan-tilt at the position between each oil storage tank, the comprehensive coverage monitoring of the combustible gas concentration in multiple oil storage tanks is realized. By controlling the coordinated actions of the pan-tilt motor and the electric telescopic rod, the omnidirectional rotation and flexible angle adjustment of the passive Fourier transform infrared remote sensing analyzer are realized to ensure that it can accurately align with each monitoring hole, so as to realize the dead-angle-free monitoring of the combustible gas concentration in the oil storage tank, further improving the monitoring accuracy and response speed of the system and ensuring the safe operation of the oil depot. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the prior art.

[0014] Figure 1 Schematic structural diagram of the oil storage tank in the present invention;

[0015] Figure 2 Schematic structural diagram of the rotating and mounting pan-tilt in the present invention;

[0016] Figure 3 Structural schematic diagram of the light guide component in the present invention;

[0017] Figure 4 Structural schematic diagram of the rotation and mounting cloud platform cooperating with the oil depot storage tank in the present invention;

[0018] Explanation of the reference numerals in the figure:

[0019] 1. Rotation and mounting cloud platform; 2. Oil depot storage tank; 3. Passive Fourier transform infrared remote sensing analyzer; 4. Monitoring hole; 5. Central control system; 6. Light guide component; 101. Mobile platform; 102. Support frame; 103. Lifting slide table module; 104. Loading platform; 105. Cloud platform motor; 106. Loading rack; 107. Electric telescopic rod; 601. Condensing housing; 602. Condensing lens; 603. Prism. Specific implementation manner

[0020] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0021] Example 1, as Figures 1-4 shown, an internal floating roof storage tank combustible gas concentration monitoring system includes a rotation and mounting cloud platform 1 and a plurality of oil depot storage tanks 2. The oil depot storage tanks 2 are evenly arranged at equal intervals around the outside of the rotation and mounting cloud platform 1. A passive Fourier transform infrared remote sensing analyzer 3 is installed above the rotation and mounting cloud platform 1. A plurality of monitoring holes 4 are evenly arranged around the upper side surface of the oil depot storage tank 2. The monitoring ports of the passive Fourier transform infrared remote sensing analyzer 3 correspond to the respective monitoring holes 4; the monitoring holes 4 are located above the internal floating tray inside the oil depot storage tank 2,

[0022] The signal output end of the passive Fourier transform infrared remote sensing analyzer 3 is connected to the central control system through a communication interface. The signal output end of the central control system is connected to the signal input end of the alarm device. The signal output end of the central control system is also connected to the control port of the rotation and mounting cloud platform 1.

[0023] Working principle:

[0024] During use, the passive Fourier transform infrared telemetry analyzer 3 is installed on the rotating mounting platform 1, and then the rotating mounting platform 1 is fixed at the position between each oil depot storage tank 2, so that the monitoring port of the passive Fourier transform infrared telemetry analyzer 3 can correspond to the monitoring holes 4 of all oil depot storage tanks 2; then, the central control system is used to control the movement and rotation of the rotating mounting platform 1, so that the passive Fourier transform infrared telemetry analyzer 3 is aligned with each monitoring hole 4 in turn, so that the combustible gas concentration in each oil depot storage tank can be monitored in real time through the passive Fourier transform infrared telemetry analyzer 3, and the data is transmitted to the central control system, and then analyzed and processed by the central control system to judge whether the gas concentration reaches the safety threshold. If the threshold is exceeded, the central control system immediately activates the alarm device to issue an alarm and generate an alarm log.

[0025] In this embodiment, by installing the passive Fourier transform infrared telemetry analyzer 3 on the rotating mounting platform 1 and fixing the rotating mounting platform 1 at the position between each oil depot storage tank 2, the comprehensive coverage monitoring of the combustible gas concentration in multiple oil depot storage tanks is realized, ensuring the accuracy and real-time nature of the monitoring data, and effectively improving the safety protection ability of the storage tank area. The passive Fourier transform infrared telemetry analyzer 3 can realize the day and night visual monitoring of each oil depot storage tank 2.

[0026] Embodiment 2, as a further preferred solution of Embodiment 1, the rotating mounting platform 1 includes a moving platform 101, a support frame 102 is vertically installed above the moving platform 101, a lifting slide table module 103 is installed on the side of the support frame 102, a bearing platform 104 is slidably connected to the side of the lifting slide table module 103 through a slider, a pan-tilt motor 105 is installed on the bearing platform 104, a bearing frame 106 is fixedly installed on the rotating shaft of the pan-tilt motor 105, and both sides of the passive Fourier transform infrared telemetry analyzer 3 are respectively rotationally connected to the middle of the bearing frame 106 through a rotating shaft; a bearing is provided at the connection between the rotating shaft and the bearing frame 106, and one end of an electric telescopic rod 107 is rotatably connected to the bearing frame 106, and the other end of the electric telescopic rod 107 is connected to the passive Fourier transform infrared telemetry analyzer 3. Among them, the control ports of the moving platform 101, the lifting slide table module 103, the pan-tilt motor 105, and the electric telescopic rod 107 are all connected to the central control system.

[0027] During the working process, the mobile platform 101 can be controlled to drive the entire rotating mounting pan-tilt 1 to move to a suitable position. Then, the height of the passive Fourier transform infrared telemetry analyzer 3 can be adjusted by controlling the lifting slide table module 103 so that the height position of its monitoring port corresponds to that of the monitoring holes of each oil depot storage tank. When monitoring, the coordinated actions of the pan-tilt motor 105 and the electric telescopic rod 107 can be controlled to achieve the omnidirectional rotation and flexible angle adjustment of the passive Fourier transform infrared telemetry analyzer 3, ensuring that it can accurately align with each monitoring hole, thereby realizing the dead-angle-free monitoring of the combustible gas concentration in the oil depot storage tank, further improving the monitoring accuracy and response speed of the system, and ensuring the safe operation of the oil depot.

[0028] Embodiment 3, as a further preferred solution of Embodiment 1, a light guiding component 6 is arranged outside the monitoring hole 4. The light guiding component includes a condenser housing 601 and a condenser lens 602. The condenser housing 601 is arranged in a horn-shaped structure. The small-mouth end of the condenser housing 601 is fixedly installed on the outside of the oil depot storage tank 2. A prism 603 is fixedly installed in the inner cavity of the condenser housing 601 near the small-mouth end. The condenser lens 602 is fixedly installed in the inner cavity of the condenser housing 601 near the large-mouth end; the focal point of the condenser lens 602 is located inside the condenser housing 601 and is converted into parallel light through the prism 603. By arranging the light guiding component 6, the light can be focused into the condenser housing 601 through the condenser lens 602 at the large-mouth end of the condenser housing 601, and then the focused light can be changed into parallel light through the prism 25. Thus, the monitoring range can be effectively expanded, and the accuracy of the passive Fourier transform infrared telemetry analyzer in long-distance monitoring can be significantly improved. The precise refraction of the prism 603 and the efficient focusing of the condenser lens 602 complement each other, ensuring that the monitoring data is still accurate and reliable even in a complex environment, providing strong support for the intelligent safety management of the oil depot.

[0029] In this embodiment, the condenser lens 602 is made of a coated zinc selenide lens. By using the coated zinc selenide material to make the condenser lens 602, the light transmittance is improved, the reflection loss is reduced, the optical path design is further optimized, and the high precision and stability of the monitoring data are ensured.

[0030] Embodiment 4, as a further preferred solution of Embodiment 1, an attitude sensor and an RTK positioning module are installed on the passive Fourier transform infrared telemetry analyzer 3. The signal output ends of the attitude sensor and the RTK positioning module are connected to the signal input end of the central control system. Through the attitude sensor, the accurate attitude and position information of the passive Fourier transform infrared telemetry analyzer 3 can be obtained in real time. Combining with the high-precision positioning function of the RTK positioning module, the geospatial accuracy of the monitoring data is ensured.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An internal floating roof storage tank combustible gas concentration monitoring system, characterized in that: It includes a rotating mounting pan-tilt (1) and multiple oil depot storage tanks (2). The oil depot storage tanks (2) are evenly arranged in a circular pattern at equal intervals around the outside of the rotating mounting pan-tilt (1). Above the rotating mounting pan-tilt (1), a passive Fourier transform infrared remote sensing analyzer (3) is installed. Above the side surface of the oil depot storage tank (2), multiple monitoring holes (4) are evenly arranged in a circular pattern. The monitoring ports of the passive Fourier transform infrared remote sensing analyzer (3) correspond to each of the monitoring holes (4). The signal output end of the passive Fourier transform infrared remote sensing analyzer (3) is connected to the central control system through a communication interface. The signal output end of the central control system is connected to the signal input end of the alarm device. The signal output end of the central control system is also connected to the control port of the rotating mounting pan-tilt (1).

2. The combustible gas concentration monitoring system for an internal floating roof storage tank according to claim 1, characterized in that: The rotating mounting pan-tilt (1) includes a moving platform (101). Above the moving platform (101), a support frame (102) is vertically installed. On the side of the support frame (102), a lifting slide table module (103) is installed. The side of the lifting slide table module (103) is slidably connected to a carrying platform (104) through a slider. On the carrying platform (104), a pan-tilt motor (105) is installed. On the rotating shaft of the pan-tilt motor (105), a carrying frame (106) is fixedly installed. The two sides of the passive Fourier transform infrared remote sensing analyzer (3) are respectively rotationally connected to the middle of the carrying frame (106) through a rotating shaft. At the connection between the rotating shaft and the carrying frame (106), a bearing is provided. One end of an electric telescopic rod (107) is rotationally connected to the carrying frame (106), and the other end of the electric telescopic rod (107) is connected to the passive Fourier transform infrared remote sensing analyzer (3).

3. The combustible gas concentration monitoring system for an internal floating roof storage tank according to claim 1, wherein: Outside the monitoring hole (4), a light guiding component (6) is provided. The light guiding component includes a light collecting housing (601) and a light collecting lens (602). The light collecting housing (601) is arranged in a horn-shaped structure. The small end of the light collecting housing (601) is fixedly installed on the outside of the oil depot storage tank (2). Inside the light collecting housing (601) near the small end, a prism (603) is fixedly installed. The light collecting lens (602) is fixedly installed inside the light collecting housing (601) near the large end. The focal point of the light collecting lens (602) is located inside the light collecting housing (601) and is converted into parallel light through the prism (603).

4. The combustible gas concentration monitoring system for an internal floating roof storage tank according to claim 1, wherein: The light collecting lens (602) uses a coated zinc selenide lens.

5. The combustible gas concentration monitoring system for an internal floating roof storage tank according to claim 1, wherein: An attitude sensor and an RTK positioning module are installed on the passive Fourier transform infrared remote sensing analyzer (3). The signal output ends of the attitude sensor and the RTK positioning module are connected to the signal input end of the central control system.

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