Floating disc detection device of storage tank

Abstract

The utility model belongs to the technical field of storage tank floating disc detection, and particularly relates to a storage tank floating disc detection device which comprises a tank body, a floating disc body is arranged in the tank body, a detection assembly used for detecting the floating disc body is arranged on the tank body, the detection assembly comprises a mounting hole formed in the top of the tank body, and a sealing block is arranged in the mounting hole. A rotating assembly is arranged on the sealing block, a connecting disc is arranged at the bottom of the rotating assembly, four telescopic assemblies are arranged on the outer side of the connecting disc, a first arc-shaped plate is installed at one end of each telescopic assembly, arc-shaped grooves are formed in the sides, close to each other, of every two first arc-shaped plates, and movable arc-shaped plates are arranged in every two arc-shaped grooves. And a camera, an ultrasonic flaw detection head, a laser ranging head and a gas concentration detector are arranged on one side of each of the four first arc-shaped plates. The device can comprehensively and meticulously detect the floating disc, and timely discover the problems of surface damage, internal structure defects, levelness and inclination abnormity, gas leakage and the like of the floating disc.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of storage tank floating disc detection, and specifically relates to a floating disc detection device of a storage tank. BACKGROUND

[0002] In many fields of modern industry, storage tanks are widely used as important storage facilities for storing various liquid and gas materials. Among them, the floating disc as a key component inside the storage tank plays a crucial role in the performance and safe operation of the storage tank.

[0003] With the continuous development of industrial production and the passage of time of the use of storage tanks, the floating disc is facing increasingly complex and severe working condition tests. On the one hand, due to long-term exposure to the environment of stored materials, the surface of the floating disc inevitably interacts physically and chemically with the materials. For example, some corrosive materials will gradually erode the surface of the floating disc, causing phenomena such as wear, corrosion and deformation. These surface damages not only affect the appearance integrity of the floating disc, but also weaken its sealing performance, increasing the evaporation loss of the material, causing economic losses and possibly having adverse effects on the environment.

[0004] On the other hand, from the internal structure of the floating disc, due to possible minor flaws in the manufacturing process, material fatigue caused by long-term bearing of material pressure, and external accidental impact, internal defects such as cracks, porosity and inclusions may occur that are difficult to detect.

[0005] In addition, the levelness and inclination of the floating disc in the storage tank are also key factors affecting its normal operation. If the floating disc is inclined, not only will it cause uneven stress between it and the inner wall of the storage tank, increasing the risk of local wear and damage, but it will also damage the original sealing structure, further exacerbating the evaporation loss of the material.

[0006] In terms of gas leakage, although the storage tank and the floating disc have taken certain sealing measures in design, due to long-term use, aging of sealing materials, movement wear of the floating disc, etc., leakage may still occur.

[0007] Traditional float inspection methods have many defects in actual operation. Although manual visual inspection is common, this method is extremely dependent on the experience and sense of responsibility of the inspector, and can only detect relatively obvious surface damage. It is often helpless against extremely subtle internal defects and changes that are difficult to detect. Although some specialized inspection equipment can detect certain specific aspects of the float, such as surface roughness or local structural strength, their functions are often single and cannot conduct a comprehensive and detailed evaluation of the float. In addition, traditional inspection methods usually need to be carried out when the tank is stopped. This not only causes production interruptions and huge economic losses, but also has extremely low inspection efficiency. It cannot meet the needs of modern industries that require high-precision and high-frequency inspections.

[0008] To this end, we have developed a tank float inspection device that can comprehensively and meticulously inspect the float. This device can promptly detect surface damage, internal structural defects, abnormal levelness and tilt, and gas leaks, effectively protecting the float's safety, preventing potential malfunctions and accidents, and ensuring the normal operation and safe use of the tank. Utility Model Content

[0009] The purpose of this utility model is to provide a floating plate detection device for a storage tank, which can comprehensively and meticulously detect the floating plate, promptly discovering problems such as surface damage, internal structural defects, abnormal levelness and tilt, and gas leakage of the floating plate, thereby effectively protecting the safety of the floating plate, preventing possible failures and accidents, and ensuring the normal operation and safe use of the storage tank.

[0010] The technical solutions adopted in this application are as follows:

[0011] A floating plate detection device for a storage tank comprises a tank body, a floating plate body is arranged inside the tank body, and a detection component for detecting the floating plate body is arranged on the tank body;

[0012] The detection assembly includes a mounting hole opened on the top of the tank body, a sealing block is arranged inside the mounting hole, a rotating assembly is arranged on the sealing block, a connecting disk is arranged at the bottom of the rotating assembly, four telescopic assemblies are arranged on the outside of the connecting disk, a first arc plate is installed at one end of each telescopic assembly, an arc groove is opened on the side where every two first arc plates are close to each other, a movable arc plate is arranged inside every two arc grooves, and a camera, an ultrasonic flaw detection head, a laser ranging head and a gas concentration detector are respectively arranged on one side of the four first arc plates.

[0013] Furthermore, a sealing layer is provided on the outside of the sealing block.

[0014] Further, the rotating assembly comprises a stepping motor arranged on the top of the sealing block, and a rotating shaft connected with the connecting disc is arranged on the output end of the stepping motor.

[0015] Further, four supporting rods are arranged on the top of the sealing block, a limiting disc connected with the stepping motor is arranged on the top of the supporting rods, and a pull ring is arranged on the top of the limiting disc.

[0016] Further, the diameter of the mounting hole is larger than the diameter of the four first arc-shaped plates in the initial state.

[0017] Further, the telescopic assembly comprises an electric telescopic rod arranged on the connecting disc, and the telescopic end of the electric telescopic rod is connected with the first arc-shaped plate.

[0018] The utility model achieves the following technical effects:

[0019] When the float plate inside the tank needs to be detected, the whole detection assembly is installed through the mounting hole opened on the top of the tank. After installation is completed, the sealing block will seal the mounting hole, ensuring the sealing of the tank and preventing gas leakage. After installation is completed, the detection devices are started in sequence. First, the camera is started, which can shoot the surface and structural details of the float plate. This helps to visually observe whether there are problems such as wear, corrosion and deformation on the surface of the float plate, thereby preliminarily detecting the surface condition of the float plate. Then, the ultrasonic flaw detector is started, which performs non-destructive testing on the structure of the float plate. By utilizing the propagation and reflection characteristics of ultrasonic waves in materials, the float plate can detect cracks, looseness, inclusions and other defects that may exist inside the float plate, and potential structural problems can be found in advance. Then, the laser ranging head is started, which is used to measure the levelness and inclination of the float plate. By measuring the distance between the float plate at different positions and the ranging head, it can be determined whether the float plate is in a horizontal state and whether there is any inclination phenomenon, thereby ensuring the stable operation of the float plate. Finally, the gas concentration detector is started to detect the concentration of the gas around the float plate. By detecting the gas concentration, it can be determined whether there is any leakage, and potential safety hazards can be found in time. After one round of detection of the float plate is completed, the telescopic assembly drives the four first arc-shaped plates to move. During the movement, the movable arc-shaped plate slides in the arc-shaped groove, thereby changing the diameter. Through the above movement and adjustment, the camera, ultrasonic flaw detector, laser ranging head and gas concentration detector can be moved to new positions to detect another round of the float plate. In this way, the process is repeated continuously, and finally the comprehensive detection of the float plate is realized. Through the above series of operations, the device can comprehensively and carefully detect the float plate. Potential damage to the surface of the float plate, internal structural defects, abnormal levelness and inclination, and gas leakage can be found in time, thereby effectively protecting the safety of the float plate, preventing possible faults and accidents, and ensuring the normal operation and safe use of the storage tank. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole structure schematic view of the utility model;

[0021] Figure 2 It is the front view of the utility model;

[0022] Figure 3 It is the sectional view of the tank body of the utility model;

[0023] Figure 4 It is the structure schematic view of the rotating shaft of the utility model;

[0024] Figure 5 It is the sectional view of the first arc-shaped plate of the utility model.

[0025] In the drawing, the component list represented by each mark is as follows:

[0026] 1, tank body;2, float body;3, mounting hole;4, sealing block;5, connecting disc;6, first arc-shaped plate;7, arc-shaped groove;8, movable arc-shaped plate;9, camera;10, ultrasonic flaw detection head;11, laser ranging head;12, gas concentration detector;13, stepping motor;14, rotating shaft;15, limiting disc;16, pull ring;17, electric telescopic rod. DETAILED DESCRIPTION

[0027] In order to make the purpose and the advantage of the utility more clear and obvious, the utility is specifically explained below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility, and does not strictly limit the protection scope of the utility specifically requested.

[0028] As shown in Figures 1-5 The technical scheme adopted by the utility is as follows: a float detection device of a storage tank, comprising a tank body 1, a float body 2 is arranged inside the tank body 1, and a detection assembly for detecting the float is arranged on the tank body 1.

[0029] The detection assembly comprises a mounting hole 3 opened at the top of the tank body 1, a sealing block 4 is arranged inside the mounting hole 3, a rotating assembly is arranged on the sealing block 4, a connecting disc 5 is arranged at the bottom of the rotating assembly, four telescopic assemblies are arranged outside the connecting disc 5, a first arc-shaped plate 6 is mounted at one end of each telescopic assembly, an arc-shaped groove 7 is opened at the side of each two first arc-shaped plates 6 close to each other, a movable arc-shaped plate 8 is arranged inside each two arc-shaped grooves 7, and a camera 9, an ultrasonic flaw detection head 10, a laser ranging head 11 and a gas concentration detector 12 are arranged at one side of the four first arc-shaped plates 6 respectively.

[0030] The working principle is: when the floating plate inside the tank 1 needs to be detected, the whole detection assembly is installed through the installation hole 3 opened at the top of the tank 1. After installation, the sealing block 4 seals the installation hole 3 to ensure the sealing of the tank 1 and prevent gas leakage. After installation, start each detection device in turn. First, start the camera 9, which can shoot the surface and structural details of the floating plate. This helps to visually observe whether there are problems such as wear, corrosion, deformation, etc. on the surface of the floating plate, thereby preliminarily detecting the surface condition of the floating plate. Then start the ultrasonic flaw detection head 10 to non-destructively detect the structure of the floating plate. By using the propagation and reflection characteristics of ultrasonic waves in materials, it can detect cracks, porosity, inclusions and other defects that may exist inside the floating plate, and discover potential structural problems in advance. Then start the laser ranging head 11 to measure the levelness and inclination of the floating plate. By measuring the distance between the floating plate at different positions and the ranging head, it can determine whether the floating plate is in a horizontal state and whether there is any inclination phenomenon, thereby ensuring the smooth operation of the floating plate. Finally, start the gas concentration detector 12 to detect the concentration of gas around the floating plate. By detecting the gas concentration, it can determine whether there is any leakage, and discover potential safety hazards in time. After one circle of detection of the floating plate is completed, the four first arc-shaped plates 6 are moved by the telescopic assembly. During the movement, the movable arc-shaped plate 8 slides in the arc-shaped groove 7, thereby changing the diameter. Through the above movement and adjustment, the camera 9, the ultrasonic flaw detection head 10, the laser ranging head 11 and the gas concentration detector 12 can be moved to a new position to detect another circle of the floating plate. In this way, the process is repeated continuously to ultimately achieve comprehensive detection of the floating plate. Through the above series of operations, the device can comprehensively and carefully detect the floating plate. It can discover surface damage, internal structural defects, abnormal levelness and inclination, gas leakage and other problems in time, thereby effectively protecting the safety of the floating plate, preventing possible faults and accidents, and ensuring the normal operation and safe use of the storage tank.

[0031] The sealing layer is arranged on the outer side of the sealing block 4, which can effectively prevent gas from leaking from the installation hole 3, thereby ensuring the airtightness and safety of the detection environment.

[0032] Meanwhile, the rotating assembly includes a stepping motor 13 arranged on the top of the sealing block 4, and a rotating shaft 14 connected with the connecting disc 5 is arranged on the output end of the stepping motor 13. The rotating shaft 14 is driven by the stepping motor 13 to rotate the connecting disc 5, thereby rotating the camera 9, the ultrasonic flaw detection head 10, the laser ranging head 11 and the gas concentration detector 12 for detection.

[0033] Four supporting rods are arranged on the top of the sealing block 4, and a limiting disc 15 connected with the stepping motor 13 is arranged on the top of each supporting rod. A pull ring 16 is arranged on the top of the limiting disc 15.

[0034] The limiting disc 15 can limit the position, preventing the entire device from entering the inside of the tank body 1. The pull ring 16 can facilitate the placement and extraction of the entire device.

[0035] The diameter of the mounting hole 3 is larger than that of the four first arc-shaped plates 6 in the initial state, which allows the four first arc-shaped plates 6 to enter the inside of the mounting hole 3.

[0036] The telescopic assembly includes an electric telescopic rod 17 arranged on the connecting disc 5, and the telescopic end of the electric telescopic rod 17 is connected with the first arc-shaped plate 6. The first arc-shaped plate 6 is moved by the electric telescopic rod 17, thereby changing the diameter.

[0037] The camera includes:

[0038] 1. Lens: responsible for collecting light and focusing it on the image sensor.

[0039] 2. Image sensor: commonly charge-coupled device (CCD) or complementary metal-oxide semiconductor (CMOS). It converts the light signal into an electrical signal.

[0040] 3. Image processing chip: processes, encodes and optimizes the electrical signal output by the image sensor to improve image quality.

[0041] 4. Storage module: used for temporary or long-term storage of captured image data.

[0042] 5. Communication interface: such as USB, Ethernet, etc., used to transfer image data to external devices or systems.

[0043] 6. Shell and bracket: provide protection and installation fixation.

[0044] Working principle:

[0045] When detecting the floating plate, the high resolution and clear imaging capability of the camera 9 can capture the subtle details on the surface of the floating plate, such as tiny wear marks, corrosion spots or deformation areas, providing intuitive and accurate basis for subsequent evaluation and diagnosis.

[0046] The ultrasonic flaw detector head 10 includes:

[0047] 1. Piezoelectric wafer: this is the core component, which can convert electrical energy into ultrasonic mechanical energy, and also can convert received ultrasonic mechanical energy into electrical energy.

[0048] 2. Damping block: used to absorb ultrasonic energy on the back of the piezoelectric wafer, reduce clutter interference and improve detection resolution.

[0049] 3. Protective film: protects the piezoelectric wafer from wear and damage, while not hindering the propagation of ultrasonic waves.

[0050] 4. Housing: serves to secure and protect internal components.

[0051] 5. Cable interface: for connecting the cable of the flaw detection equipment, transmitting electrical signals.

[0052] Working principle:

[0053] When a high-frequency electrical pulse is applied to the piezoelectric wafer, due to the inverse piezoelectric effect, the piezoelectric wafer will produce high-frequency mechanical vibration, thereby emitting ultrasonic waves to the detected floating plate. These ultrasonic waves propagate inside the floating plate.

[0054] When the ultrasonic waves encounter the interface of different media (such as cracks, loose inclusions, etc.), reflection and refraction will occur. Part of the reflected ultrasonic waves will be received by the piezoelectric wafer. Due to the positive piezoelectric effect, the piezoelectric wafer will convert the received ultrasonic mechanical energy into electrical signals.

[0055] The flaw detection equipment will process and analyze these returned electrical signals. By measuring parameters such as the amplitude of the reflected wave, propagation time, etc., the location, size and nature of the defect can be determined. For example, if the amplitude of the reflected wave is large, it indicates that the reflecting surface of the defect is large; if the propagation time is short, it indicates that the defect is close to the flaw detection head.

[0056] In this way, the characteristics of ultrasonic wave propagation and reflection in materials can be used to detect cracks, loose inclusions, etc. that may exist inside the floating plate, to detect potential structural problems in advance, and to achieve non-destructive testing.

[0057] Laser ranging head 11 includes:

[0058] 1. Laser emitting device: for emitting laser beams of specific wavelength and power.

[0059] 2. Optical system: including lenses, mirrors, etc., for collimating, focusing, etc. operations on transmitted and received laser beams.

[0060] 3. Laser receiving device: usually a photodetector, which converts the received laser signal into an electrical signal.

[0061] 4. Signal processing circuit: amplifies, filters, digitizes, etc. the electrical signal output by the receiving device.

[0062] 5. Housing and mounting interface: protects internal elements and provides interfaces for connecting and mounting with other equipment.

[0063] Working principle:

[0064] When the laser rangefinder 11 is operating, the laser emitting device emits a laser beam. This laser beam is collimated by the optical system and then directed toward the surface of the floating disk. When the laser beam reaches the surface of the floating disk, it is reflected back. The reflected laser beam is refocused by the optical system onto the laser receiving device. The receiving device converts the received optical signal into an electrical signal and transmits it to the signal processing circuit. The signal processing circuit calculates the distance between the laser rangefinder 11 and the illuminated point on the floating disk surface by measuring the time difference between laser emission and reception or the phase difference of the received light.

[0065] To determine the levelness and tilt of the float, multiple measurements are taken at different locations on the float. If the distances measured at these points are equal, the float is level. If the distances differ, the float is tilted. Based on the distance differences and the positional relationship of the measurement points, the angle and direction of the tilt can be calculated, ensuring smooth operation of the float.

[0066] The gas concentration detector 12 includes:

[0067] 1. Breathable membrane: allows only specific gases to pass through, blocking impurities and interfering substances.

[0068] 2. Electrodes: usually include working electrode, counter electrode and reference electrode.

[0069] 3. Electrolyte: provides medium for electrochemical reaction.

[0070] 4. Housing: protects internal components and controls the passage of gas.

[0071] Working principle:

[0072] The gas to be measured enters the sensor through the gas permeable membrane. In the presence of electrodes and electrolytes, the gas to be measured undergoes oxidation or reduction reaction on the working electrode.

[0073] This electrochemical reaction generates an electric current, the magnitude of which is proportional to the concentration of the gas being measured. By measuring the magnitude of this current and converting and processing it through the circuit, the concentration of the gas being measured can be determined.

[0074] By detecting the concentration of gas around the floating plate, if the concentration exceeds the normal range, it can be judged that there may be a leakage, so as to discover safety hazards in time.

[0075] It should be noted that the connection methods and operating principles of the camera 9, ultrasonic flaw detection head 10, laser ranging head 11 and gas concentration detector 12 all belong to the existing technology and will not be described in detail here.

[0076] The working principle of the utility model is: when the float plate inside the tank body 1 needs to be detected, the whole detection assembly is installed through the installation hole 3 opened at the top of the tank body 1. After installation, the sealing block 4 seals the installation hole 3, ensuring the sealing of the tank body 1 and preventing gas leakage. After installation, start each detection device in turn. First, start the camera 9, which can shoot the surface and structural details of the float plate. This helps to visually observe whether the float plate surface has problems such as wear, corrosion, deformation, etc., thereby preliminarily detecting the surface condition of the float plate. Then start the ultrasonic flaw detection head 10, which non-destructively detects the structure of the float plate. By using the propagation and reflection characteristics of ultrasonic waves in materials, it can detect cracks, porosity, inclusions and other defects that may exist inside the float plate, and discover potential structural problems in advance. Then start the laser ranging head 11 to measure the levelness and inclination of the float plate. By measuring the distance between the float plate at different positions and the ranging head, it can determine whether the float plate is in a horizontal state and whether there is any inclination phenomenon, ensuring the smooth operation of the float plate. Finally, start the gas concentration detector 12 to detect the concentration of the gas around the float plate. By detecting the gas concentration, it can determine whether there is any leakage and discover potential safety hazards in time. After one circle of detection of the float plate is completed, the four first arc-shaped plates 6 are moved by the telescopic assembly. During the movement, the movable arc-shaped plate 8 slides in the arc-shaped groove 7, thereby changing the diameter. Through the above movement and adjustment, the camera 9, ultrasonic flaw detection head 10, laser ranging head 11 and gas concentration detector 12 can be moved to a new position to detect another circle of the float plate. In this way, the process is repeated continuously to ultimately achieve comprehensive detection of the float plate. Through the above series of operations, the device can comprehensively and carefully detect the float plate. It can discover surface damage, internal structural defects, abnormal levelness and inclination, gas leakage and other problems in time, thereby effectively protecting the safety of the float plate, preventing possible faults and accidents, and ensuring the normal operation and safe use of the storage tank.

[0077] The above is only the preferred embodiment of the utility model, and it should be noted that those skilled in the art can make some improvements and refinements without departing from the principle of the utility model. These improvements and refinements should also be considered within the protection scope of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model are implemented according to the conventional means in the field without special description and limitation.

Claims

1. A floating roof detection device for a storage tank, comprising a tank body (1) provided with a floating roof body (2) inside, and a detection assembly provided on the tank body (1) for detecting the floating roof body (2). characterized in that The detection assembly comprises a mounting hole (3) opened on the top of the tank body (1), the mounting hole (3) is provided with a sealing block (4) inside, the sealing block (4) is provided with a rotating assembly, the bottom of the rotating assembly is provided with a connecting disc (5), the outer side of the connecting disc (5) is provided with four telescopic assemblies, one end of each telescopic assembly is provided with a first arc-shaped plate (6), each two first arc-shaped plates (6) are provided with an arc-shaped groove (7) on the side close to each other, each two arc-shaped grooves (7) are provided with a movable arc-shaped plate (8) inside, and the side of the four first arc-shaped plates (6) is respectively provided with a camera (9), an ultrasonic flaw detection head (10), a laser ranging head (11) and a gas concentration detector (12).

2. The floating roof detection device of a storage tank according to claim 1, characterized by: The outer side of the sealing block (4) is provided with a sealing layer.

3. The floating roof detection device of a storage tank according to claim 1, characterized by: The rotating assembly comprises a stepping motor (13) provided on the top of the sealing block (4), and the output end of the stepping motor (13) is provided with a rotating shaft (14) connected with the connecting disc (5).

4. A floating pan detection device for a storage tank as defined in claim 3, characterized in that: The top of the sealing block (4) is provided with four supporting rods, the top of the supporting rods is provided with a limiting disc (15) connected with the stepping motor (13), and the top of the limiting disc (15) is provided with a pull ring (16).

5. The floating roof detection apparatus of claim 1, wherein: The diameter of the mounting hole (3) is greater than the diameter of the four first arc-shaped plates (6) in the initial state.

6. The floating roof detection apparatus of claim 1, wherein: The telescopic assembly comprises an electric telescopic rod (17) provided on the connecting disc (5), and the telescopic end of the electric telescopic rod (17) is connected with the first arc-shaped plate (6).

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