Tank body inner surface defect detection device

Abstract

The utility model discloses a tank body inner surface defect detection device which comprises a fixed structure, a rotating structure and a detection structure, the fixing structure comprises a fixing ring and a plurality of fixing bolts; the fixing bolt is in threaded connection with the fixing ring; the fixing bolt is used for fixing the fixing ring on an inlet pipe at the top of a to-be-tested tank body; the detection structure can rotate in the tank body and can spray a fluorescent penetrant onto the inner wall of the tank body; the inner wall of the tank body is irradiated by the irradiation lamp, the defects in the tank body are subjected to fluorescence development under the action of the irradiation lamp, and the camera is used for shooting and recording, so that the purpose of flaw detection on the inner surface of the tank body is achieved, and personnel do not need to enter the tank body.

Description

Technical Field

[0001] The utility model relates to the field of tank body inspection, in particular to a tank body inner surface defect detection device. Background Art

[0002] During use, cracks or holes may appear inside the tank; flaw detection is required inside the tank;

[0003] Fluorescent penetrant produces bright yellow-green fluorescence under ultraviolet light, has high sensitivity, can be washed with water, and has good permeability and water washability. It can be used for flaw detection inside tanks; however, the existing tanks are too small to allow people to enter and spray fluorescent penetrants. Secondly, the inlet pipes of some tanks are tilted at the top of the tank, which is inconvenient for the use of detection equipment.

[0004] Therefore, a tank body surface defect detection device is needed to solve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A tank inner surface defect detection device comprises a fixed structure, a rotating structure and a detection structure;

[0007] The fixing structure includes a fixing ring and a plurality of fixing bolts; the fixing bolts are threadedly connected to the fixing ring, and the fixing bolts are used to fix the fixing ring to the inlet pipe at the top of the tank to be tested;

[0008] The rotating structure includes a rotating motor, a first rotating rod, a coupling, and a second rotating rod; the rotating motor is fixedly connected to the fixing ring, one end of the first rotating rod is connected to the output end of the rotating motor, and the other end is connected to one end of the coupling, and one end of the second rotating rod is connected to the other end of the coupling;

[0009] The detection structure includes a connecting part, an irradiation lamp, a camera, a liquid storage tank, a nozzle, a plurality of nozzles, and a delivery pump;

[0010] The connecting part is fixedly connected to one end of the second rotating rod, and an illumination lamp and a camera are arranged on the side wall of the connecting part; the bottom of the connecting part is connected to the liquid storage tank, the liquid storage tank is connected to one end of the nozzle, the other end of the nozzle is sealed, a plurality of nozzles are arranged on the outer wall of the nozzle, the plurality of nozzles are connected to the inside of the nozzle, and a delivery pump is arranged on the nozzle; the liquid storage tank is used to store fluorescent penetrant.

[0011] Preferably, the coupling is a universal coupling.

[0012] Preferably, the coupling is a double cross universal coupling.

[0013] Preferably, the number of the fixing bolts is three, and the three fixing bolts are distributed in a ring shape on the fixing ring.

[0014] Preferably, the first rotating rod and the second rotating rod are both retractable electric retractable rods.

[0015] Preferably, the connecting portion is a rectangular parallelepiped structure.

[0016] Preferably, the detection structure also includes a vertical distance meter and a horizontal distance meter; the vertical distance meter and the horizontal distance meter are both arranged on the connecting part, the vertical distance meter is used to detect the distance between the connecting part and the bottom of the tank body, and the horizontal distance meter is used to detect the distance between the connecting part and the side wall of the tank body.

[0017] Preferably, the tank body inner surface defect detection device also includes a controller and a wireless transmission unit, and the controller is electrically connected to the rotating motor, the first rotating rod, the second rotating rod, the wireless transmission unit, the irradiation lamp, the camera, the delivery pump, the vertical rangefinder and the horizontal rangefinder respectively.

[0018] Preferably, the irradiation lamp is an ultraviolet lamp.

[0019] Due to the adoption of the above technical scheme, the technical progress achieved by the utility model compared with the prior art is as follows: the detection structure can rotate inside the tank body, and the fluorescent penetrant can be sprayed onto the inner wall of the tank body; the inner wall of the tank body is irradiated by an irradiation lamp, and the defects in the tank body are fluorescently developed under the action of the irradiation lamp, and are photographed and recorded by a camera, thereby achieving the purpose of flaw detection on the inner surface of the tank body without the need for personnel to enter the tank body.

[0020] Secondly, the fixed structure is fixed on the inclined inlet pipe. Through the coupling, the detection structure can be kept vertical with the tank body due to the effect of gravity, which facilitates the detection structure to detect the inside of the tank body. Even if the inlet pipe is in an inclined state, the second rotating rod can be kept vertical to the bottom surface, thereby ensuring the stable operation of the detection structure in the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of a tank inner surface defect detection device according to the utility model;

[0023] Figure 2This is a schematic diagram of the structure of a tank inner surface defect detection device according to the utility model;

[0024] Figure 3 This is a schematic diagram of the connection of a controller for a tank inner surface defect detection device of the utility model. The main component symbols are explained.

[0025] Fixed structure 1 Rotation structure 2 Detection structure 3 Fixed ring 11 Fixing bolt 12 Rotating motor 21 First rotating rod 22 Coupling 23 Second rotating rod 24 Connecting part 31 Irradiation lamp 32 Camera 33 Liquid storage tank 34 Nozzle 35 Nozzle 36 Delivery pump 37 Vertical rangefinder 38 Horizontal distance meter 39 Controller 4 Wireless transmission unit 41 Tank 10

[0026] The following specific implementation will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0027] In order to make the technical personnel in the technical field better understand the scheme of the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by the technical personnel in the technical field of the utility model. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] See also Figure 1-3 , the embodiment of the utility model provides a tank body surface defect detection device, including a fixed structure 1, a rotating structure 2 and a detection structure 3;

[0030] The fixing structure 1 includes a fixing ring 11 and a plurality of fixing bolts 12; the fixing bolts 12 are threadedly connected to the fixing ring 11, and the fixing bolts 12 are used to fix the fixing ring 11 to the inlet pipe at the top of the tank body 10 to be tested;

[0031] The rotating structure 2 includes a rotating motor 21, a first rotating rod 22, a coupling 23, and a second rotating rod 24; the rotating motor 21 is fixedly connected to the fixing ring 11, one end of the first rotating rod 22 is connected to the output end of the rotating motor 21, and the other end is connected to one end of the coupling 23, and one end of the second rotating rod 24 is connected to the other end of the coupling 23;

[0032] The detection structure 3 includes a connection part 31, an irradiation lamp 32, a camera 33, a liquid storage tank 34, a nozzle 35, a plurality of nozzles 36, and a delivery pump 37;

[0033] The connecting portion 31 is fixedly connected to one end of the second rotating rod 24, and an illumination lamp 32 and a camera 33 are arranged on the side wall of the connecting portion 31; the bottom of the connecting portion 31 is connected to a liquid storage tank 34, and the liquid storage tank 34 is connected to one end of a nozzle 35, and the other end of the nozzle 35 is sealed. A plurality of nozzles 36 are arranged on the outer wall of the nozzle 35, and the plurality of nozzles 36 are all connected to the inside of the nozzle 35, and a delivery pump 37 is arranged on the nozzle 35; the liquid storage tank 34 is used to store fluorescent penetrant.

[0034] In one embodiment of the present invention, the coupling 23 is a universal coupling.

[0035] In one embodiment of the present invention, the coupling 23 is a double cross universal coupling.

[0036] Furthermore, the number of the fixing bolts 12 is three, and the three fixing bolts 12 are distributed on the fixing ring 11 in a ring shape.

[0037] Furthermore, the first rotating rod 22 and the second rotating rod 24 are both retractable electric retractable rods.

[0038] Furthermore, the connecting portion 31 is in a rectangular parallelepiped structure.

[0039] In one embodiment of the present invention, the detection structure 3 also includes a vertical distance meter 38 and a horizontal distance meter 39; the vertical distance meter 38 and the horizontal distance meter 39 are both arranged on the connecting part 31, the vertical distance meter 38 is used to detect the distance between the connecting part 31 and the bottom of the tank body, and the horizontal distance meter 39 is used to detect the distance between the connecting part 31 and the side wall of the tank body.

[0040] In one embodiment of the utility model, the tank inner surface defect detection device further includes a controller 4 and a wireless transmission unit 41. The controller 4 is electrically connected to the rotating motor 21, the first rotating rod 22, the second rotating rod 24, the wireless transmission unit 41, the irradiation lamp 32, the camera 33, the delivery pump 37, the vertical rangefinder 38 and the horizontal rangefinder 39 respectively; the controller 4 can control the operation of the rotating motor 21, the first rotating rod 22, the second rotating rod 24, the irradiation lamp 32, the camera 33, the delivery pump 37, the vertical rangefinder 38 and the horizontal rangefinder 39; at the same time, the data obtained by the camera 33, the vertical rangefinder 38 and the horizontal rangefinder 39 can be transmitted to the mobile phone or computer of the inspector through the wireless transmission unit 41. So that the inspector can timely understand the information inside the tank.

[0041] When the utility model is used, the detection structure 3 is extended into the tank body to be tested from the inlet pipe at the top of the tank body, the fixing ring 11 is sleeved on the outside of the inlet pipe, and the fixing bolt 12 is tightened at the same time so that one end of the fixing bolt 12 contacts the outer wall of the inlet pipe, so that the fixing ring 11 is fixedly set on the inlet pipe; the first rotating rod 22 is driven to rotate by starting the rotating motor 21, and the second rotating rod 24 is driven to rotate, thereby driving the detection structure 3 to rotate in the tank body, and the delivery pump 37 is started to deliver the fluorescent penetrant in the liquid storage tank 34 to the nozzle 36 to spray onto the inner wall of the tank body; after standing for a period of time, the irradiation lamp 32 is turned on to irradiate the inner wall of the tank body, and the defects in the tank body are fluorescently developed under the action of the irradiation lamp, and the camera 33 is used to shoot and record, thereby achieving the purpose of flaw detection.

[0042] Furthermore, the coupling 23 is a double cross universal coupling, which can keep the detection structure 3 vertical to the tank body due to gravity.

[0043] Furthermore, the first rotating rod 22 and the second rotating rod 24 are both retractable electric retractable rods, and the position of the detection structure 3 inside the tank body can be adjusted by retracting and extending the first rotating rod 22 and the second rotating rod 24 .

[0044] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A tank inner surface defect detection device, characterized in that: It includes a fixed structure, a rotating structure and a detection structure; The fixing structure includes a fixing ring and a plurality of fixing bolts; the fixing bolts are threadedly connected to the fixing ring, and the fixing bolts are used to fix the fixing ring to the inlet pipe at the top of the tank to be tested; The rotating structure includes a rotating motor, a first rotating rod, a coupling, and a second rotating rod; the rotating motor is fixedly connected to the fixing ring, one end of the first rotating rod is connected to the output end of the rotating motor, and the other end is connected to one end of the coupling, and one end of the second rotating rod is connected to the other end of the coupling; The detection structure includes a connecting part, an irradiation lamp, a camera, a liquid storage tank, a nozzle, a plurality of nozzles, and a delivery pump; the connecting part is fixedly connected to one end of the second rotating rod, and the irradiation lamp and the camera are arranged on the side wall of the connecting part; the bottom of the connecting part is connected to the liquid storage tank, the liquid storage tank is connected to one end of the nozzle, the other end of the nozzle is sealed, a plurality of nozzles are arranged on the outer wall of the nozzle, the plurality of nozzles are connected to the inside of the nozzle, and a delivery pump is arranged on the nozzle; the liquid storage tank is used to store fluorescent penetrant.

2. The tank inner surface defect detection device according to claim 1, characterized in that: The coupling is a double cross universal coupling.

3. The tank inner surface defect detection device according to claim 2, characterized in that: There are three fixing bolts, which are distributed on the fixing ring in a circular shape.

4. The tank inner surface defect detection device according to claim 3, characterized in that: The first rotating rod and the second rotating rod are both telescopic electric telescopic rods.

5. The tank inner surface defect detection device according to claim 4, characterized in that: The detection structure also includes a vertical distance meter and a horizontal distance meter; the vertical distance meter and the horizontal distance meter are both arranged on the connection part, the vertical distance meter is used to detect the distance between the connection part and the bottom of the tank body, and the horizontal distance meter is used to detect the distance between the connection part and the side wall of the tank body.

6. The tank inner surface defect detection device according to claim 5, characterized in that: The tank inner surface defect detection device also includes a controller and a wireless transmission unit. The controller is electrically connected to the rotating motor, the first rotating rod, the second rotating rod, the wireless transmission unit, the irradiation lamp, the camera, the delivery pump, the vertical rangefinder and the horizontal rangefinder.

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