Ultrasonic detection device for power station boiler steel structure

Abstract

The utility model provides an ultrasonic detection device for a power station boiler steel structure, which comprises an ultrasonic flaw detector, a connecting line, an ultrasonic probe and a probe cover, the ultrasonic flaw detector is connected with the ultrasonic probe through the connecting line, the whole ultrasonic probe is rectangular, and the probe cover is magnetically attracted on the ultrasonic probe; according to the utility model, the design of the probe is optimized, so that the coupling agent is automatically and stably supplied and uniformly distributed. According to the design, the operation process is simplified, the complexity of manual spraying is avoided, and the detection efficiency is remarkably improved. The ball head structure elastically installed by the spring ensures effective filling of a small gap between the probe and the surface of a weld joint, solves the problem of uneven distribution of a coupling agent, and improves the accuracy and reliability of detection. Meanwhile, the coupling agent is stably and continuously supplied, so that waste is avoided, the detection cost is reduced, and the influence of external factors on the uniformity of the coupling agent is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to ultrasonic detection technical field especially relates to a kind of ultrasonic detection device for power station boiler steel structure. BACKGROUND

[0002] In the detection field of power station boiler steel structure, ultrasonic flaw detection technology is widely adopted and applied due to its significant advantages of non-destructive, high precision and high efficiency. However, in actual operation, especially when detecting the weld of steel structure, the existing ultrasonic flaw detector exposes some problems of complicated operation and low efficiency. Specifically, before detection, the staff has to use an angle grinder to remove the coating on the surface of the weld, and then needs to clean the surface of the joint comprehensively to ensure that there is no impurity interference with the detection result. After cleaning, the detection personnel often need to manually spray ultrasonic coupling agent on the surface of the weld. The main function of the coupling agent is to fill the small gap between the probe and the detection surface, so as to ensure the effective transmission of ultrasonic energy and improve the accuracy and reliability of detection. However, manual spraying of coupling agent not only increases the complexity of operation, but also may cause uneven distribution of coupling agent. Even if the initial coating appears uniform, the coupling agent is prone to flow due to its fluidity and is affected by external factors, thereby destroying its uniformity. Therefore, in order to ensure the detection effect, the detection personnel have to frequently spray or apply the coupling agent, which undoubtedly increases the difficulty of controlling the use amount of the coupling agent.

[0003] Therefore, it is necessary to invent an ultrasonic detection device for power station boiler steel structure. SUMMARY

[0004] To solve the above technical problems, the utility model provides an ultrasonic detection device for power station boiler steel structure, which comprises an ultrasonic flaw detector, a connecting line, an ultrasonic probe and a probe cover. The ultrasonic flaw detector is connected to the ultrasonic probe through the connecting line. The ultrasonic probe is rectangular in whole. The probe cover is magnetically attracted to the ultrasonic probe.

[0005] Preferably, the ultrasonic probe comprises a probe body, a communication cavity, a spring, a ball head and a detection area. The ultrasonic flaw detector is connected to the probe body through the connecting line. A plurality of communication cavities are arranged inside the probe body. Each communication cavity is elastically mounted with a ball head inside through a spring. The plurality of communication cavities and ball heads are arranged around the detection area of the probe body.

[0006] Preferably, the communication cavity allows the ball head to move inside it. The ball head partially protrudes outward and blocks one end of the communication cavity.

[0007] Preferably, the other end of the communication cavity is communicated with the internal cavity of the storage box fixedly installed on the probe body, and the ultrasonic coupling agent is stored in the internal cavity of the storage box.

[0008] Preferably, the injection hole through the storage box is sealed by the plug.

[0009] Preferably, the probe body is adsorbed together with the end cover of the probe cover through the magnet, and the inner side surface of the end cover of the probe cover is provided with a plurality of recessed areas.

[0010] Preferably, each of the recessed areas of the probe cover corresponds to each of the ball heads, and is used for covering the part of the ball head protruding outward.

[0011] Compared with the prior art, the utility model has the advantages of the following:

[0012] The utility model discloses a probe body, which realizes the automatic stable supply and uniform distribution of the coupling agent, significantly simplifies the operation process, avoids the cumbersome steps of manual spraying, and greatly improves the detection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the whole structure schematic diagram of the utility model.

[0014] Figure 2 It is the explosion structure schematic diagram of the ultrasonic probe and the probe cover of the utility model.

[0015] Figure 3 It is the half cut surface structure schematic diagram of the ultrasonic probe and the probe cover of the utility model.

[0016] In the drawing:

[0017] Ultrasonic flaw detector 1, connecting line 2, ultrasonic probe 3, probe body 31, communication cavity 32, spring 33, ball head 34, detection area 35, storage box 36, injection hole 37, probe cover 4, end cover 41, magnet 42, recessed area 43. DETAILED DESCRIPTION

[0018] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0019] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] As shown in the accompanying Figure 1 to the accompanying Figure 3 As shown:

[0021] The ultrasonic detection device for the steel structure of the power station boiler provided by the present application comprises an ultrasonic flaw detector 1, a connecting line 2, an ultrasonic probe 3 and a probe cover 4, the ultrasonic flaw detector 1 is connected with the ultrasonic probe 3 through the connecting line 2, the ultrasonic probe 3 is in the shape of a rectangle as a whole, and the probe cover 4 is magnetically attracted to the ultrasonic probe 3.

[0022] Further, the ultrasonic probe 3 comprises a probe main body 31, a communication cavity 32, a spring 33, a ball head 34 and a detection area 35, these components cooperate together to realize the high efficiency and accuracy of ultrasonic flaw detection. Specifically, the ultrasonic flaw detector 1 is closely connected with the probe main body 31 through the connecting line 2, so as to ensure the stable transmission of signals. Multiple communication cavities 32 are carefully arranged inside the probe main body 31, which provide space for the movement of the ball head 34.

[0023] Further, each of the communicating cavities 32 is elastically mounted with a ball head 34 inside by a spring 33. This design enables the ball head 34 to move inside the communicating cavity 32 while partially protruding outside to block one end of the communicating cavity 32. This structure not only enhances the flexibility of the probe, but also enables the ball head 34 to be in close contact with the weld surface, ensuring that the coupling agent can be smoothly discharged through the communicating cavity 32 and continuously and stably supplied after the ball head 34 retracts inside the communicating cavity 32.

[0024] Further, the other end of the communicating cavity 32 is in communication with the internal cavity of the storage box 36 fixedly mounted on the probe body 31. The storage box 36 stores a large amount of ultrasonic coupling agent to provide sufficient coupling agent supply for the detection process. This design avoids the cumbersome step of manually spraying the coupling agent, improving the detection efficiency.

[0025] Further, in order to ensure the quality and stability of the coupling agent, the injection hole 37 penetratingly provided on the storage box 36 is tightly sealed by the plug 38. This design effectively prevents the volatilization and pollution of the coupling agent, ensuring the smooth progress of the detection process.

[0026] Further, the probe body 31 is tightly adsorbed together with the end cap 41 of the probe cover 4 by the magnet 42 of the probe cover 4. This design enables the ball head 34 not to discharge the coupling agent outside during non-use of the probe. The inner surface of the end cap 41 of the probe cover 4 is provided with a plurality of recessed areas 43 corresponding to the ball heads 34, which are used to cover the part of the ball heads 34 protruding outside. This design not only enhances the appearance of the probe, but also reduces the contact of the ball heads 34 with the outside during non-use of the probe.

[0027] The working principle is as follows: first, when the weld of the steel structure of the power plant boiler needs to be detected, the operator will preferentially use an angle grinder to remove the coating at the weld to ensure that the weld surface is not covered by the coating, facilitating subsequent detection operations. Then, the weld surface is thoroughly cleaned to remove impurities, oil stains, etc., to ensure that the weld surface is clean and free of dirt to avoid affecting the accuracy of the detection results.

[0028] According to actual needs, the operator can preferentially spray a layer of basic coupling agent on the cleaned weld surface. This step is not necessary. It mainly provides convenience for the initial ultrasonic detection.

[0029] Next, the ultrasonic detection device is taken out from the tool box. The operator turns on the ultrasonic detector 1 to ensure that it is in working condition. Then, the probe cover 4 is gently removed to expose the detection area 35 of the ultrasonic probe 3. At this time, the magnet 42 of the probe cover 4 is not adsorbed together with the probe body 31.

[0030] Then, the operator will adhere to the detection area 35 of the ultrasonic probe 3 on the weld surface. Because the ball head 34 is elastically mounted inside the communication cavity 32 by the spring 33, when the probe body 31 is in contact with the weld surface, the protruding part of the ball head 34 will contract inward and form a close contact with the weld surface. At the same time, the coupling agent will flow out through the small gap between the ball head 34 and the communication cavity 32, fill in between the probe and the weld, and ensure the effective transmission of ultrasonic energy.

[0031] During the detection process, the ultrasonic flaw detector 1 will emit ultrasonic signals, which are transmitted to the ultrasonic probe 3 through the connecting line 2. When the ultrasonic signals propagate inside the weld, if they encounter defects or abnormal structures, reflected waves will be generated. The reflected waves will be received by the ultrasonic probe 3 and converted into electrical signals, which are transmitted back to the ultrasonic flaw detector 1 through the connecting line 2 for analysis and processing.

[0032] After the detection is completed, the operator will cover the probe cover 4 again. The magnet 42 of the probe cover 4 will be tightly adsorbed with the probe body 31, covering the ball head 34 in the recessed area 43 of the probe cover 4, preventing the leakage of the coupling agent. At the same time, the ultrasonic probe 3 and the storage box 36 can also be cleaned and maintained to ensure the accuracy and reliability of the next use.

[0033] Through the use of the ultrasonic detection device, the operator can realize efficient and accurate detection of the weld of the steel structure of the power station boiler, improve the detection efficiency and quality, and provide strong protection for the safe operation of the power station boiler.

[0034] Using the technical scheme of the utility model, or the technical personnel in the utility model technical scheme inspired by, design similar technical scheme, and reach the above technical effect, all are fall into the protection scope of the utility model.

Claims

1. An ultrasonic testing device for a steel structure of a power plant boiler, characterized in that, Including ultrasonic flaw detector (1), connecting line (2), ultrasonic probe (3) and probe cover (4), the ultrasonic flaw detector (1) is connected with ultrasonic probe (3) through connecting line (2), ultrasonic probe (3) is rectangular as a whole, ultrasonic probe (3) is magnetized with the probe cover (4) on it;Ultrasonic probe (3) includes probe body (31), communication cavity (32), spring (33), ball head (34) and detection area (35), the ultrasonic flaw detector (1) is connected with probe body (31) through connecting line (2), probe body (31) is internally arranged with a plurality of communication cavities (32), each communication cavity (32) is internally elastically mounted with ball head (34) through spring (33), a plurality of communication cavities (32) and ball head (34) are arranged around the detection area (35) of probe body (31).

2. An apparatus for ultrasonic testing of a steel structure of a power plant boiler according to claim 1, characterized in that: The communication cavity (32) allows the ball head (34) to move inside it, wherein the ball head (34) partially protrudes outward and blocks one end of the communication cavity (32).

3. An apparatus for ultrasonic testing of a steel structure of a power plant boiler according to claim 2, characterized in that: The other end of the communication cavity (32) is connected with the internal cavity of the storage box (36) fixedly installed on the probe body (31), and the storage box (36) internally stores ultrasonic coupling agent.

4. A device for ultrasonic testing of a steel structure of a power plant boiler according to claim 3, characterized in that: The injection hole (37) through the storage box (36) is sealed by the plug (38).

5. An apparatus for ultrasonic testing of a steel structure of a power plant boiler according to claim 4, characterized in that: The probe body (31) is adsorbed together with the end cover (41) of the probe cover (4) by the magnet (42), and the inner surface of the end cover (41) of the probe cover (4) is provided with a plurality of recessed areas (43).

6. An apparatus for ultrasonic testing of a steel structure of a power plant boiler according to claim 5, characterized in that: Each recessed area (43) of the probe cover (4) corresponds to each ball head (34) for covering the part of the ball head (34) protruding outward.

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