Ultrasonic detection equipment for welding seam of steam-injection boiler

Abstract

The utility model discloses steam-injection boiler weld joint ultrasonic detection equipment which comprises a fixing plate, the fixing plate is of an annular structure, a connecting mechanism is arranged on the inner side of the fixing plate, the connecting mechanism is composed of four connecting assemblies, the four connecting assemblies are arranged in an annular array, each connecting assembly is composed of a mounting base, a U-shaped plate and a walking wheel, and the U-shaped plate is arranged on the mounting base. One side of the mounting base is connected with the fixing plate through an adjusting mechanism, the other side of the mounting base is fixedly connected with two U-shaped plates, the walking wheels on the four connecting assemblies can be controlled to be tightly pressed on the outer wall of the boiler through the adjusting mechanism, so that connection between the device and the boiler is completed, and the connecting mode is convenient and fast. The device can be suitable for boilers with different diameters, the application range is wider, the two walking wheels distributed in the axial direction of the fixing plate are arranged on the connecting assembly, the contact area between the walking wheels and the outer wall of the boiler can be increased, and the stability of the device during rotation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler weld detection, and particularly relates to an ultrasonic detection device for the welds of a steam injection boiler. Background Technique

[0002] A boiler is an energy conversion device. The energy input into the boiler includes the chemical energy in fuel and electric energy, and the boiler outputs steam, high-temperature water or organic heat carriers with a certain amount of heat energy. The purpose of detecting the welding quality of the circumferential welds of the boiler is to ensure the integrity, reliability and safety of the welded structure. Non-destructive testing is a method that can inspect and test the properties of the interior and surface of a specimen without damaging or affecting the service performance of the boiler and without harming the internal structure of the object to be detected, and it has a wide range of applications in the detection of boilers and other equipment. The existing non-destructive testing devices for boilers cannot perform overall detection on the boiler during use. It is necessary to hold the probe and walk around the boiler weld to complete the detection. In this process, it is impossible to ensure that the distance between the probe and the boiler is consistent, which is likely to cause detection errors.

[0003] According to the Chinese patent document with the publication number CN214473300U, a non-destructive testing device for the circumferential welds of a boiler is disclosed. Through the setting of this device, the clamping and walking device can be clamped on the outer wall of the boiler, and the device can be manually rotated on the boiler, which not only improves the detection efficiency, but also keeps the distance between the probe and the boiler weld consistent all the time, further improving the detection accuracy.

[0004] However, when the above device is in use, it is connected to the outer wall of the boiler by the cooperation of an arc-shaped clamping plate and rollers. This connection method can only be used for boilers that fit the arc-shaped clamping plate. If a boiler with a different diameter is replaced, the boiler will not be able to come into contact with all the rollers, resulting in an unstable connection between the device and the boiler. For this reason, an ultrasonic detection device for the welds of a steam injection boiler is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide an ultrasonic detection device for the welds of a steam injection boiler to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An ultrasonic detection device for the weld of a steam injection boiler, comprising a fixing plate. The fixing plate is of an annular structure. A connecting mechanism is arranged inside the fixing plate. The connecting mechanism consists of four connecting components. The four connecting components are arranged in an annular array. Each connecting component is composed of a mounting seat, a U-shaped plate and a traveling wheel. One side of the mounting seat is connected to the fixing plate through an adjusting mechanism. The other side of the mounting seat is fixedly connected with two U-shaped plates. A traveling wheel is rotatably connected between the two parallel plates of the U-shaped plate. A detector is arranged on the side of the fixing plate. The bottom of the detector is electrically connected with a probe. The detector is connected to the fixing plate through a lifting mechanism.

[0007] As a further preference of this technical solution, the two U-shaped plates are distributed along the axial direction of the fixing plate.

[0008] As a further preference of this technical solution, the adjusting mechanism is composed of a guide rod, a first lead screw and a first adjusting member. The middle of the mounting seat is rotatably connected with a first lead screw. The other end of the first lead screw penetrates through the fixing plate and is connected to the fixing plate through screw-thread fit. The end of the first lead screw away from the mounting seat is fixedly connected with a first adjusting member. Guide rods are respectively arranged on both sides of the first lead screw. The two guide rods are symmetrically distributed on both sides of the first lead screw. One end of the guide rod is fixedly connected to the side wall of the mounting seat. The other end of the guide rod slidably penetrates through the fixing plate.

[0009] As a further preference of this technical solution, a sleeve is slidably sleeved on the outer wall of the guide rod. The sleeve is fixedly connected to the outer wall of the fixing plate.

[0010] As a further preference of this technical solution, the lifting mechanism is composed of a fixed column, a lifting plate, a second lead screw, a second adjusting member and a connecting plate. The end of the detector away from the probe is fixedly connected with a connecting plate. The connecting plate is of a U-shaped structure. The other end of the connecting plate is fixedly connected with a lifting plate. Two fixed columns are slidably inserted into the lifting plate. One end of the fixed column is fixedly connected to the outer wall of the fixing plate. A second lead screw is arranged between the two fixed columns. The second lead screw penetrates through the lifting plate and is connected to the lifting plate through screw-thread fit. One end of the second lead screw is rotatably connected to the outer wall of the fixing plate. The other end of the second lead screw is fixedly connected with a second adjusting member.

[0011] As a further preference of this technical solution, anti-slip slots are formed on the outer surfaces of the first adjusting member and the second adjusting member.

[0012] As a further preference of this technical solution, the guide rods and the fixed columns are both distributed along the radial direction of the fixing plate.

[0013] The utility model provides an ultrasonic detection device for the welds of a steam injection boiler, which has the following beneficial effects:

[0014] Through the adjusting mechanism of the utility model, the traveling wheels on the four connecting components can be controlled to tightly press on the outer wall of the boiler, so as to complete the connection between the device and the boiler. This connection method can be applied to boilers with various different diameters, with a wider application range. And two traveling wheels are arranged on the connecting component along the axial direction of the fixed plate, which can increase the contact area between the traveling wheels and the outer wall of the boiler and improve the stability of the device during rotation. The distance between the detector probe and the boiler component can be controlled through the arranged lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 is a schematic diagram of the overall structure of the utility model from another perspective;

[0017] Figure 3 For the utility model Figure 1 is a schematic diagram of the structure of A in;

[0018] Figure 4 For the utility model Figure 2 is a schematic diagram of the structure of B in;

[0019] In the figure: 1, fixed plate; 2, mounting seat; 3, U-shaped plate; 4, traveling wheel; 5, guide rod; 6, sleeve; 7, first lead screw; 8, first adjusting part; 9, fixed column; 10, lifting plate; 11, second lead screw; 12, second adjusting part; 13, connecting plate; 14, detector; 15, probe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the utility model.

[0021] The utility model provides a technical solution: As Figures 1 to 4 shown, in this embodiment, an ultrasonic detection device for the welds of a steam injection boiler includes a fixed plate 1. The fixed plate 1 is of an annular structure. A connecting mechanism is arranged inside the fixed plate 1. The connecting mechanism is composed of four connecting components. The four connecting components are arranged in an annular array. The connecting component is composed of a mounting seat 2, a U-shaped plate 3 and a traveling wheel 4. One side of the mounting seat 2 is connected to the fixed plate 1 through an adjusting mechanism. The other side of the mounting seat 2 is fixedly connected with two U-shaped plates 3. The two U-shaped plates 3 are distributed along the axial direction of the fixed plate 1. A traveling wheel 4 is rotatably connected between the two parallel plates of the U-shaped plate 3. A detector 14 is arranged on the side of the fixed plate 1. The bottom of the detector 14 is electrically connected with a probe 15. The detector 14 is connected to the fixed plate 1 through a lifting mechanism.

[0022] Among them, the adjusting mechanism is composed of a guide rod 5, a first lead screw 7, and a first adjusting member 8. A first lead screw 7 is rotatably connected to the middle of the mounting seat 2. The other end of the first lead screw 7 penetrates through the fixing plate 1 and is connected to the fixing plate 1 by thread fitting. A first adjusting member 8 is fixedly connected to the end of the first lead screw 7 away from the mounting seat 2. Guide rods 5 are respectively arranged on both sides of the first lead screw 7. The two guide rods 5 are symmetrically distributed on both sides of the first lead screw 7. One end of the guide rod 5 is fixedly connected to the side wall of the mounting seat 2, and the other end of the guide rod 5 slidably penetrates through the fixing plate 1.

[0023] During use, rotate the first adjusting member 8 to drive the first lead screw 7 to rotate. The mounting seat 2 is restricted by the guide rod 5 and cannot rotate. When the first lead screw 7 rotates, the mounting seat 2 will move along the axial direction of the guide rod 5, thereby controlling the distance between the traveling wheel 4 and the fixing plate 1.

[0024] Among them, a sleeve 6 is slidably sleeved on the outer wall of the guide rod 5, and the sleeve 6 is fixedly connected to the outer wall of the fixing plate 1.

[0025] By providing the sleeve 6, the stability of the guide rod 5 can be improved, and the situation of the guide rod 5 being skewed can be avoided.

[0026] Among them, the lifting mechanism is composed of a fixed column 9, a lifting plate 10, a second lead screw 11, a second adjusting member 12, and a connecting plate 13. A connecting plate 13 is fixedly connected to the end of the detector 14 away from the probe 15. The connecting plate 13 is of a U-shaped structure. The other end of the connecting plate 13 is fixedly connected to a lifting plate 10. Two fixed columns 9 are slidably inserted into the lifting plate 10. One end of the fixed column 9 is fixedly connected to the outer wall of the fixing plate 1. A second lead screw 11 is arranged between the two fixed columns 9. The second lead screw 11 penetrates through the lifting plate 10 and is connected to the lifting plate 10 by thread fitting. One end of the second lead screw 11 is rotatably connected to the outer wall of the fixing plate 1, and the other end of the second lead screw 11 is fixedly connected to a second adjusting member 12.

[0027] During use, rotate the second adjusting member 12 to drive the second lead screw 11 to rotate. The lifting plate 10 is restricted by the two fixed columns 9 and cannot rotate. When the second lead screw 11 rotates, the lifting plate 10 will move along the axial direction of the fixed column 9. Driven by the connecting plate 13, the detector 14 will move synchronously with the lifting plate 10, thereby achieving the purpose of controlling the height of the detector 14.

[0028] Among them, anti-slip grooves are formed on the outer surfaces of the first adjusting member 8 and the second adjusting member 12.

[0029] By providing the anti-slip grooves, the friction between the hands of the staff and the adjusting member can be increased.

[0030] Among them, the guide rod 5 and the fixed column 9 are both distributed along the radial direction of the fixed plate 1.

[0031] With such a setting, it can be ensured that both the traveling wheels 4 and the detector 14 move along the radial direction of the fixed plate 1.

[0032] The utility model provides an ultrasonic detection device for the weld of a steam injection boiler, and the specific working principle is as follows:

[0033] When in use, the boiler is placed on the operating table through a hoisting device so that there is no obstruction around the circumferential weld. The fixed plate 1 is sleeved on the outer surface of the boiler, and then the first adjusting member 8 is rotated to drive the first lead screw 7 to rotate. The mounting seat 2 is restricted by the guide rod 5 and cannot rotate. When the first lead screw 7 rotates, the mounting seat 2 will move along the axial direction of the guide rod 5, thereby adjusting the distance between the traveling wheels 4 and the fixed plate 1. At the same time, by controlling the four traveling wheels 4 to tightly press against the outer wall of the boiler, the device can be installed on the boiler. Then, the fixed plate 1 is rotated to make the probe 15 of the detector 14 rotate around the boiler gap for one circle, and the detection of the gap can be quickly completed. The distance between the probe 15 and the boiler can be adjusted by a lifting mechanism.

[0034] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic testing device for a steam injection boiler weld, comprising a fixing plate (1), characterized in that: The fixed plate (1) is an annular structure. A connecting mechanism is arranged on the inner side of the fixed plate (1). The connecting mechanism is composed of four connecting components. The four connecting components are arranged in an annular array. The connecting components are composed of a mounting seat (2), a U-shaped plate (3) and a running wheel (4). One side of the mounting seat (2) is connected to the fixed plate (1) via an adjustment mechanism. The other side of the mounting seat (2) is fixedly connected to two U-shaped plates (3). The running wheel (4) is rotatably connected between two parallel plates of the U-shaped plate (3). A detector (14) is arranged on the side of the fixed plate (1). The bottom of the detector (14) is electrically connected to a probe (15). The detector (14) is connected to the fixed plate (1) via a lifting mechanism.

2. The ultrasonic testing equipment for welds of steam injection boilers according to claim 1, characterized in that: The two U-shaped plates (3) are distributed along the axial direction of the fixed plate (1).

3. The ultrasonic testing equipment for welding seams of steam injection boilers according to claim 1 is characterized in that: The adjustment mechanism is composed of a guide rod (5), a lead screw (7) and a first adjustment member (8); the middle part of the mounting seat (2) is rotatably connected to the lead screw (7); the other end of the lead screw (7) passes through the fixed plate (1) and is connected to the fixed plate (1) by threaded engagement; the end of the lead screw (7) away from the mounting seat (2) is fixedly connected to the first adjustment member (8); guide rods (5) are respectively provided on both sides of the lead screw (7); the two guide rods (5) are symmetrically distributed on both sides of the lead screw (7); one end of the guide rod (5) is fixedly connected to the side wall of the mounting seat (2); the other end of the guide rod (5) slides through the fixed plate (1).

4. The ultrasonic testing equipment for welding seams of steam injection boilers according to claim 3 is characterized in that: A sleeve (6) is slidably sleeved on the outer wall of the guide rod (5), and the sleeve (6) is fixedly connected to the outer wall of the fixing plate (1).

5. The ultrasonic testing equipment for welding seams of steam injection boilers according to claim 3 is characterized in that: The lifting mechanism is composed of a fixed column (9), a lifting plate (10), a second lead screw (11), a second adjusting member (12) and a connecting plate (13). One end of the detector (14) away from the probe (15) is fixedly connected to the connecting plate (13). The connecting plate (13) is a U-shaped structure. The other end of the connecting plate (13) is fixedly connected to the lifting plate (10). Two fixed columns (9) are slidably inserted on the lifting plate (10). One end of the fixed column (9) is fixedly connected to the outer wall of the fixed plate (1). A second lead screw (11) is arranged between the two fixed columns (9). The second lead screw (11) passes through the lifting plate (10) and is connected to the lifting plate (10) by threaded engagement. One end of the second lead screw (11) is rotatably connected to the outer wall of the fixed plate (1). The other end of the second lead screw (11) is fixedly connected to the second adjusting member (12).

6. The ultrasonic testing equipment for welding seams of steam injection boilers according to claim 5 is characterized in that: The outer surfaces of the No. 1 adjusting piece (8) and the No. 2 adjusting piece (12) are provided with anti-slip grooves.

7. The ultrasonic testing equipment for welding seams of steam injection boilers according to claim 5 is characterized in that: The guide rods (5) and the fixing columns (9) are both distributed along the radial direction of the fixing plate (1).

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