A flaw detection device for power plant valve maintenance

Abstract

The utility model discloses a power plant valve maintenance is with flaw detection device relates to valve detection technical field, and the utility model discloses a detector main part is equipped with auxiliary support subassembly on the outer surface of detector main part, and the upper surface intercommunication of detector main part is equipped with the joint, and the output of joint intercommunication is equipped with transmission line, and the end of transmission line is equipped with detachable probe subassembly, and detachable probe subassembly includes probe seat, and probe seat installs at the end of transmission line, and the inner wall of probe seat is equipped with thread groove, and the probe body is assembled in probe seat with the thread connection mode to the detachable probe subassembly, and the flexible replacement of adapting probe can be carried out according to the different specifications and the appearance of valve, and the use flexibility of device is effectively promoted, and through adding auxiliary support subassembly, the detector main part can be stably supported on one side when detecting, and manual hand -held operation is not needed, which not only reduces the labor intensity of operating personnel, but also further improves the use convenience of device.

Description

Technical Field

[0001] This utility model relates to the field of valve testing technology, specifically a flaw detection device for power plant valve maintenance. Background Technology

[0002] Power plant valves are core components of power production systems, widely used for the transmission and control of media such as steam, water, and fuel. Their working environment is constantly exposed to high temperature, high pressure, media corrosion, and frequent switching wear, which can easily lead to hidden defects such as cracks, fatigue damage, and internal corrosion. If these defects are not detected in time, they may cause media leakage, valve jamming, or even explosion, directly affecting the safe and stable operation of power plant units and causing downtime losses or safety accidents. Therefore, accurate flaw detection during the maintenance phase is a key link in the operation and maintenance of power equipment. However, existing flaw detection devices for power plant valve maintenance still have some problems in use: First, the detection probes in the detection device are mostly fixedly installed, which makes it impossible to flexibly change the type of probe to match the valves of different specifications and shapes. This results in insufficient adaptability of the device to diverse detection scenarios, thereby reducing the overall flexibility of use. Secondly, the existing detection devices lack a dedicated support structure, requiring manual operation of the detector body during the detection process. It is impossible to stably support it on one side, which increases the labor intensity of the operators and ultimately reduces the ease of use of the device. Utility Model Content

[0003] To address the problems of difficult probe replacement and lack of support structure in existing flaw detection devices, the purpose of this invention is to provide a flaw detection device for power plant valve maintenance.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a flaw detection device for power plant valve maintenance, comprising a detector body, an auxiliary support assembly on the outer surface of the detector body, a connector on the upper surface of the detector body, a transmission line connected to the output end of the connector, a detachable probe assembly at the end of the transmission line, the detachable probe assembly comprising a probe seat, the probe seat being installed at the end of the transmission line, a threaded groove being formed on the inner wall of the probe seat, a threaded sleeve being threadedly connected to the inner wall of the threaded groove, a probe body being fixedly installed on the inner wall of the threaded sleeve, and an electrical plug-in connection between the probe body and the probe seat.

[0005] Preferably, the auxiliary support assembly includes symmetrically distributed positioning seats, which are symmetrically fixedly installed on both sides of the detector body. The inner wall of the positioning seat is rotatably connected to a connecting block. A support frame is fixedly connected to one side of the connecting block. Multiple positioning holes are opened on one side of the connecting block, and the multiple positioning holes are concentrically arranged. Positioning pins are movably inserted between the positioning holes and the positioning seats.

[0006] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This application sets up a detachable probe assembly, and assembles the probe body into the probe seat by means of a threaded connection. The appropriate probe can be flexibly replaced according to the different specifications and shapes of the valve, which effectively improves the flexibility of the device. 2. By adding an auxiliary support component, this application can stably support the detector body on one side during testing, eliminating the need for manual hand operation. This reduces the labor intensity of operators and further improves the ease of use of the device. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a schematic diagram of the structure of this utility model.

[0009] Figure 2 This is a schematic diagram of the exploded cross-sectional structure of the detachable probe assembly of this utility model.

[0010] Figure 3 This is a schematic diagram of the explosive structure of the auxiliary support component of this utility model.

[0011] Figure 4 This utility model lock Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0012] In the diagram: 1. Detector body; 2. Detachable probe assembly; 21. Threaded groove; 22. Threaded sleeve; 23. Probe body; 24. Probe seat; 3. Auxiliary support assembly; 31. Support frame; 32. Anti-slip sleeve; 34. Positioning pin; 35. Positioning hole; 36. Positioning seat; 37. Connecting block; 4. Protective sleeve; 5. Transmission line; 6. Connector; 7. Handle; 8. Vertical plate. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Example: Figure 1-4 As shown, this utility model provides a flaw detection device for power plant valve maintenance, including a detector body 1. Vertical plates 8 are symmetrically fixedly connected to the upper surface of the detector body 1. A handle 7 is hinged to one side of the vertical plate 8 via a pivot. The handle 7 is rotatably connected by the cooperation between the vertical plate 8 and the pivot. Operators can easily carry or move the detector body 1 by holding the handle 7, reducing the difficulty of transporting the device and improving ease of use. A protective sleeve 4 is fixedly connected to the lower surface of the detector body 1. The protective sleeve 4 can protect the lower surface of the detector body 1, preventing the detector body 1 from being directly rubbed against the contact surface when placed, thus avoiding wear and extending the service life of the detector body 1.

[0015] The outer surface of the detector body 1 is provided with an auxiliary support component 3, which provides stable support for the detector body 1, eliminating the need for manual continuous hand-holding of the detector body 1 for detection operations and reducing the labor intensity of operators. The upper surface of the detector body 1 is connected to a connector 6, and the output end of the connector 6 is connected to a transmission line 5. The transmission line 5 is a flexible wire. The connector 6 enables stable connection between the transmission line 5 and the detector body 1, ensuring stable transmission of electrical signals. The flexible design of the transmission line 5 allows for flexible adjustment of the detection angle and position of the detachable probe assembly 2 to adapt to the detection needs of different parts of the valve. The end of the transmission line 5 is provided with a detachable probe assembly 2, which facilitates flexible replacement of the appropriate probe type according to different valve specifications and shapes, improving the adaptability of the device to diverse detection scenarios.

[0016] The detachable probe assembly 2 includes a probe base 24, which is installed at the end of the transmission line 5. The probe base 24 provides a stable mounting base for the threaded sleeve 22 and the probe body 23, ensuring a reliable connection between the detachable probe assembly 2 and the transmission line 5 and ensuring smooth signal transmission. The inner wall of the probe base 24 is provided with a threaded groove 21, and the inner wall of the threaded groove 21 is threadedly connected to the threaded sleeve 22. The threaded connection structure between the threaded groove 21 and the threaded sleeve 22 enables quick assembly and disassembly of the probe body 23 and the probe base 24, making the operation simple and improving the replacement efficiency of the probe body 23.

[0017] The probe body 23 is fixedly installed on the inner wall of the threaded sleeve 22. The threaded sleeve 22 plays a role in fixing and protecting the probe body 23, ensuring that the probe body 23 remains stable during the detection process and ensuring detection accuracy. The probe body 23 and the probe seat 24 are electrically connected. The electrical connection ensures stable transmission of electrical signals between the probe body 23 and the detector body 1, avoids signal interruption or distortion, and ensures the accuracy of defect detection results.

[0018] The auxiliary support assembly 3 includes symmetrically distributed positioning seats 36, which are symmetrically fixedly installed on both sides of the detector body 1. The positioning seats 36 provide a stable mounting carrier for the connecting block 37 and the support frame 31, ensuring the reliability of the connection between the auxiliary support assembly 3 and the detector body 1. The inner wall of the positioning seat 36 is damped and rotatably connected to the connecting block 37, and one side of the connecting block 37 is fixedly connected to the support frame 31. The damped rotation of the connecting block 37 and the positioning seat 36 allows for flexible adjustment of the support angle of the support frame 31 to adapt to the support requirements under different detection scenarios, ensuring the stability of the detector body 1. The cross-sectional shape of the support frame 31 is U-shaped. The U-shaped cross-section of the support frame 31 has good structural stability and can provide stable support for the detector body 1, preventing the device from tipping over during the detection process.

[0019] The outer surface of the support frame 31 is fixedly fitted with an anti-slip sleeve 32. The anti-slip sleeve 32 increases the friction between the support frame 31 and the contact surface, further improving the support stability of the support frame 31 and preventing the device from sliding during the testing process. The connecting block 37 has multiple positioning holes 35 on one side, and the multiple positioning holes 35 are concentrically arranged. A positioning pin 34 is movably inserted between the positioning hole 35 and the positioning seat 36. By engaging the positioning pin 34 with the positioning hole 35 at different positions, the rotation angle of the support frame 31 can be fixed, ensuring the stability of the support angle and meeting the support requirements of different heights and angles. The positioning hole 35 is a magnetic hole, and the positioning pin 34 is a magnetic pin. The positioning pin 34 and the positioning hole 35 are magnetically engaged. The magnetic engagement between the magnetic hole and the magnetic pin makes the engagement between the positioning pin 34 and the positioning hole 35 tighter, preventing the positioning pin 34 from falling off during the testing process, and facilitating the insertion and removal of the positioning pin 34, thus improving the angle adjustment efficiency.

[0020] Working principle: Before testing, the U-shaped support frame 31 is adjusted to a suitable support angle by the damping rotation of the positioning seats 36 on both sides of the detector body 1 and the connecting block 37. The positioning pin 34 is inserted into the magnetic positioning hole 35 at the corresponding position of the connecting block 37. The support angle is fixed by magnetic attraction, so that the detector body 1 is stably supported at the testing site by the auxiliary support component 3, without the need for manual handling.

[0021] Meanwhile, the anti-slip sleeve 32 on the outer surface of the support frame 31 increases the friction with the contact surface, further improving the support stability. At the same time, the protective sleeve 4 on the lower surface of the detector body 1 prevents wear when the device is placed.

[0022] According to the specifications and shape of the valve to be tested, select the appropriate probe body 23, align the threaded sleeve 22 of the probe body 23 with the threaded groove 21 on the inner wall of the probe seat 24, and achieve quick assembly and disassembly through threaded connection. At the same time, the probe body 23 and the probe seat 24 form an electrical plug-in connection to ensure smooth signal transmission path.

[0023] If a probe needs to be replaced to test different valves, the old probe can be removed by rotating the threaded sleeve 22 in the opposite direction. The operation is simple and efficient.

[0024] During testing, the operator can adjust the position of the device by using the handle 7 hinged to the vertical plate 8 on the upper surface of the detector body 1, or by using the flexibility of the soft transmission line 5 to flexibly adjust the detection angle and position of the detachable probe assembly 2 so that the probe body 23 fits against the valve part to be tested.

[0025] The probe body 23 converts the electrical signal emitted by the detector body 1 into ultrasonic waves and transmits them into the valve. The ultrasonic waves reflected by the defects inside the valve are received by the probe body 23 and converted into electrical signals, which are then stably transmitted to the detector body 1 via the probe seat 24, transmission line 5 and connector 6.

[0026] The detector body 1 processes and analyzes the received electrical signals, converting information such as the location and size of valve defects into visual data for operators to judge the valve defect situation and complete the flaw detection operation.

[0027] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A flaw detection device for power plant valve maintenance, comprising a detector body (1), characterized in that: The outer surface of the detector body (1) is provided with an auxiliary support assembly (3), the upper surface of the detector body (1) is connected to a connector (6), the output end of the connector (6) is connected to a transmission line (5), and the end of the transmission line (5) is provided with a detachable probe assembly (2). The detachable probe assembly (2) includes a probe base (24), which is installed at the end of the transmission line (5). The inner wall of the probe base (24) is provided with a threaded groove (21), and a threaded sleeve (22) is threadedly connected to the inner wall of the threaded groove (21). The probe body (23) is fixedly installed on the inner wall of the threaded sleeve (22), and the probe body (23) and the probe base (24) are electrically connected.

2. The flaw detection device for power plant valve maintenance as described in claim 1, characterized in that: The auxiliary support assembly (3) includes symmetrically distributed positioning seats (36), which are symmetrically fixedly installed on both sides of the detector body (1). The inner wall of the positioning seat (36) is connected to a connecting block (37) with damping rotation. A support frame (31) is fixedly connected to one side of the connecting block (37). Multiple positioning holes (35) are opened on one side of the connecting block (37), and the multiple positioning holes (35) are concentrically arranged. A positioning pin (34) is movably inserted between the positioning hole (35) and the positioning seat (36).

3. The flaw detection device for power plant valve maintenance as described in claim 1, characterized in that: The detector body (1) has vertical plates (8) symmetrically fixedly connected to its upper surface, and a handle (7) is hinged to one side of the vertical plate (8) via a pivot.

4. The flaw detection device for power plant valve maintenance as described in claim 1, characterized in that: A protective sleeve (4) is fixedly connected to the lower surface of the detector body (1).

5. The flaw detection device for power plant valve maintenance as described in claim 1, characterized in that: The transmission line (5) is a flexible wire.

6. The flaw detection device for power plant valve maintenance as described in claim 2, characterized in that: The cross-sectional shape of the support frame (31) is U-shaped.

7. The flaw detection device for power plant valve maintenance as described in claim 2, characterized in that: The positioning hole (35) is a magnetic hole, the positioning pin (34) is a magnetic pin, and the positioning pin (34) is magnetically connected to the positioning hole (35).

8. The flaw detection device for power plant valve maintenance as described in claim 2, characterized in that: The outer surface of the support frame (31) is fixedly fitted with an anti-slip sleeve (32).

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