A tool for nondestructive testing of a head plate

Abstract

The utility model discloses a kind of tool for head plate nondestructive testing, for carrying head plate and sending head plate into nondestructive testing chamber, comprising: support rod, the carrying platform for placing head plate, base, rail car, locking device and clamp, the base is placed on rail car upper surface, and the fixed connection of base and rail car is realized by clamp;The bottom of the support rod is vertically fixedly connected with one end of the base, and the carrying platform is obliquely arranged, and the opposite sides of the carrying platform are fixedly connected with the top of the support rod and the other end of the base;The bottom of the carrying platform is equipped with locking device for fixing head plate, and locking device and carrying platform are vertically fixedly connected.The tool provided by the utility model makes up the defect that the height of large head plate radiographic testing chamber entrance is insufficient, effectively utilizes the height space of nondestructive testing chamber, thereby significantly improves the size of the existing detection equipment to the adaptive range of head plate.

Description

Technical Field

[0001] This utility model belongs to the field of cryogenic equipment testing technology, specifically relating to a tooling for non-destructive testing of end plates. Background Technology

[0002] In industries such as air separation, petrochemicals, and cryogenics, as projects increasingly demand high-purity, high-volume production lines, the size of key equipment in these lines is constantly increasing, and the manufacturing difficulty of the equipment is also gradually increasing.

[0003] The production capacity of equipment manufacturers is generally determined by the overall conditions of their manufacturing workshops, and follows the "barrel effect," meaning that manufacturing capacity is limited by the weakest link. For example, each step in equipment manufacturing can be regarded as a plank that makes up a barrel, such as the rolling capacity of the plate rolling machine, the welding skills of the welders, the ability of non-destructive testing, the space of the workshop, the lifting capacity of the overhead crane, etc. Any deficiency in any of these will directly restrict the overall manufacturing capacity of the manufacturing workshop.

[0004] Improving these "weak links" often requires significant financial and time investment. For example, increasing plate rolling capacity necessitates purchasing new plate rolling machines, and insufficient workshop space necessitates expanding or constructing new workshops. However, if a simpler method can significantly enhance these weaknesses, equipment manufacturers can achieve maximum manufacturing capacity with minimal investment of money, time, and effort. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of the existing technology and provide a tooling for non-destructive testing of end plates.

[0006] The specific technical solution adopted in this utility model is as follows: This utility model provides a fixture for non-destructive testing of end plates, used to support end plates and send them into a non-destructive testing chamber. It includes: a support rod, a support platform for placing the end plate, a base, a railcar, a locking device, and clamps. The base is placed on the upper surface of the railcar, and the clamps securely connect the base to the railcar. The bottom of the support rod is vertically fixedly connected to one end of the base. The support platform is inclined, and its opposite sides are fixedly connected to the top of the support rod and the other end of the base, respectively. A locking device for fixing the end plate is provided at the bottom of the support platform, and the locking device is vertically fixedly connected to the support platform.

[0007] Preferably, the support platform is a rectangular frame consisting of two longitudinal bars and two transverse bars, wherein the two longitudinal bars are arranged in parallel and spaced apart, the two transverse bars are arranged in parallel and spaced apart, and the longitudinal bars and transverse bars are fixedly connected to each other perpendicularly.

[0008] Preferably, the support platform and the locking device are fixedly connected by welding.

[0009] Preferably, the locking device includes a slider, a handle, and a sliding groove. The sliding groove is a rectangular groove with a one-way opening. The two groove walls on the opening side of the sliding groove are fixedly connected to the bottom of the support platform. The slider is located in the sliding groove. One end of the handle passes through the bottom plate of the sliding groove and is fixedly connected to the slider. The slider can be controlled to slide along the length direction of the sliding groove by rotating the handle.

[0010] Preferably, the clamp is an L-shaped workpiece, with the vertical rod contacting and fixing to the base, and the horizontal rod tightly attached to the railcar.

[0011] Preferably, the vertical rod of the clamp is fixedly connected to the base by fasteners.

[0012] Preferably, the fastener is a bolt.

[0013] Preferably, the clamp is made of carbon steel.

[0014] Compared with the prior art, this utility model has the following advantages: This invention provides a specialized fixture for non-destructive testing of end plates. It transforms the traditional flat-lying end plates on a railcar into an inclined state for inspection, overcoming the limitation of insufficient entrance height in radiographic (RT) testing chambers for large end plates. This effectively utilizes the height space of the NDT chamber, significantly improving the adaptability of existing testing equipment to end plate sizes. The fixture features a rational structure with clamps and locking devices at the bottom that match the railcar, effectively preventing the end plates from falling during testing and ensuring safe and reliable operation. Compared to traditional solutions such as expanding or building new testing chambers, this invention significantly enhances the NDT capabilities of equipment manufacturers in the production of large equipment with extremely low cost and time investment. Attached Figure Description

[0015] Figure 1 This is a side view of the tooling for non-destructive testing of the end cap plate provided in this embodiment; Figure 2 A side view of the end cap plate placed in the non-destructive testing fixture for the end cap plate provided in this embodiment; Figure 3 This is a schematic diagram showing the connection between the base and the clamp; Figure 4 This is a front view of the tooling for non-destructive testing of the end cap plate provided in this embodiment; Figure 5 The front view of the end cap plate placed in the non-destructive testing fixture for the end cap plate provided in this embodiment; Figure 6 This is a schematic diagram of the locking device. In the diagram: support rod 1, bearing platform 2, base 3, railcart 4, locking device 5, slider 5-1, handle 5-2, sliding groove 5-3, clamp 6, fastener 6-1, end plate 7. Detailed Implementation

[0016] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. Technical features in various embodiments of this utility model can be combined appropriately without conflict.

[0017] For the non-destructive testing (NDT) steps of end plates in the manufacturing process of large tank equipment, the end plates of such products mostly have a diameter of over 5m and a thickness of over 50mm. Mobile equipment cannot complete radiographic (RT) testing of plates of this thickness, requiring the end plates to be transported to an NDT chamber for RT testing using fixed equipment. End plates are mostly placed flat on a railcar to enter the NDT chamber; however, when the width of the NDT chamber is smaller than the diameter of the end plate, the end plate cannot enter the NDT chamber for RT testing. To solve the above problem, as a preferred embodiment of this utility model, this embodiment provides a fixture for NDT of end plates. Its core function is to change the transportation posture of the large end plate 7, changing it from the traditional horizontal placement to an inclined placement at a certain angle to the horizontal plane. This allows the large end plate 7, whose diameter exceeds the width of the testing chamber door, to smoothly enter the testing chamber for RT testing when entering the narrow NDT chamber, utilizing the height space at the entrance to compensate for the insufficient width.

[0018] like Figure 1 and Figure 2 As shown, the fixture for non-destructive testing of end cap plates provided in this embodiment includes a support rod 1, a bearing platform 2 for placing the end cap plate 7, a base 3, a railcar 4, a locking device 5, and a clamp 6. The base 3 is placed on the upper surface of the railcar 4, as shown. Figure 3As shown, to ensure stability during the movement of the railcar 4 and prevent the base 3 from sliding or other components from tipping over, the base 3 is fixedly connected to the railcar 4 using clamps 6. Since the base 3 may slip during the movement of the railcar 4, leading to wear on the clamps 6, in this embodiment, the clamps 6 are made of carbon steel to effectively resist wear and extend their service life. This material can reliably resist vibration and impact during the transport of the tooling, ensuring the stability and safety of the connection. In this embodiment, the clamps 6 are L-shaped, with the vertical rod of the clamps 6 tightly against the side of the base 3. Both the vertical rod and the side of the base 3 have mounting holes. Fasteners 6-1 are used to fix the clamps 6 to the base 3. In other embodiments, the clamps 6 and the base 3 can be fixed using snap-fit ​​connections or other suitable methods. In this embodiment, fasteners 6-1 are bolts, facilitating disassembly and allowing for flexible replacement of base 3 sizes with different sizes of end plates 7. The horizontal rod of the clamps 6 is tightly against the bottom or side of the platform of the railcar 4. Depending on the specific structure of the track vehicle 4, multiple clamps 6 can be symmetrically arranged on both sides or at the four corners of the base 3 to achieve the best fixing effect.

[0019] In the tooling provided in this embodiment, the bottom of the support rod 1 is vertically and fixedly connected to one end of the base 3. In this embodiment, this fixing can be achieved by welding. The height of the support rod 1 determines the tilt angle of the bearing platform 2. Therefore, in actual operation, the height of the support rod 1 needs to be calculated and determined based on the diameter of the end plate 7 to be tested and the entrance height of the non-destructive testing chamber, so that the end plate 7 can smoothly enter the non-destructive testing chamber. Figure 4 and Figure 5 As shown, the support platform 2 is the component that directly supports the end plate 7. In this embodiment, the support platform 2 is a rectangular frame composed of two longitudinal rods and two transverse rods. The two longitudinal rods are arranged in parallel and spaced apart, and the other two transverse rods are arranged in parallel and spaced apart. The longitudinal rods and transverse rods are vertically fixed to each other. The longitudinal rods and transverse rods are usually fixed by welding to form a strong and stable rigid frame. In other embodiments, the support platform 2 can also be made of a solid plate, but the rectangular frame scheme of this embodiment is cheaper than solid plate. The support platform 2 can also be designed as a frame of other shapes, such as a triangular frame or other suitable shapes. The support platform 2 is installed in an inclined state. The opposite sides of the support platform 2 are fixedly connected to the top of the support rod 1 and the other side of the base 3, respectively. From the side, the support rod 1, the support platform 2, and the base 3 form a stable triangular support system, so that the plane on which the support platform 2 is located forms a certain angle with the horizontal plane.

[0020] like Figure 2As shown, to prevent the end plate 7 from slipping off the inclined support platform 2 due to gravity or the swaying of the railcar 4 during transportation, the tooling provided in this embodiment includes a locking device 5 at the bottom of the support platform 2 for fixing the end plate 7. The locking device 5 is vertically fixed to the support platform 2. Because the end plate 7 is relatively heavy, to ensure connection stability and load-bearing capacity, the locking device 5 is typically connected to the support platform 2 by welding to enhance structural rigidity. Figure 6 As shown, in the tooling provided in this embodiment, the locking device 5 includes a slider 5-1, a handle 5-2, and a sliding groove 5-3. The sliding groove 5-3 is a rectangular groove with a one-way opening, and the two groove walls on the opening side of the sliding groove 5-3 are fixed to the bottom of the support platform 2 by welding. The slider 5-1 is disposed in the sliding groove 5-3, and its shape matches the inner contour of the groove. The slider 5-1 slides along the length direction of the sliding groove 5-3. A hole is provided on the bottom plate of the sliding groove 5-3, and one end of the handle 5-2 passes through the hole in the bottom plate of the sliding groove 5-3 and is fixedly connected to the slider 5-1. In this embodiment, the slider 5-1 and the handle 5-2 can be fixed by threaded connection or welding. When the handle 5-2 is turned clockwise or counterclockwise, the slider 5-1 can be driven to move back and forth in the sliding groove 5-3. After the end plate 7 is placed on the inclined support platform 2, the lower end of the end plate 7 abuts against the groove wall of the sliding groove 5-3. The operator can rotate the handle 5-2 to push the slider 5-1 to slide closer to the support platform 2 until it abuts against the lower end of the end plate 7. The end plate 7 is locked by the clamping force to prevent the end plate 7 from sliding left and right during the movement, which would cause the position to shift and make it difficult to enter or exit the non-destructive testing chamber or slip off the support platform 2. Rotating the handle 5-2 in the opposite direction will move the slider 5-1 away from the support platform 2, thereby releasing the end plate 7 and facilitating unloading.

[0021] In this embodiment, the tooling is used to place the end plate 7 on the support platform 2 using a lifting device. When the lower edge of the end plate 7 contacts the locking device 5, the handle 5-2 is rotated to push the slider 5-1 to slide until the end plate 7 is firmly fixed. After confirming that it is securely fixed, the inclined end plate 7 is transported to the non-destructive testing chamber by a traction device or manually pushed by the railcar 4. In actual operation, the angle between the support platform 2 and the horizontal plane can be adjusted to the same angle as the angle between the diagonal of the non-destructive testing chamber doorway and the horizontal plane. This ensures that the outline of the end plate 7 passing through the non-destructive testing chamber doorway is on the same plane as the diagonal of the doorway, maximizing the diameter range of the end plate 7 passing through the doorway and allowing it to pass smoothly through a doorway that is originally too narrow. After the non-destructive testing is completed in the testing room, the end plate 7 is transported out of the testing room by the railcar 4. The slider 5-1 is moved in the opposite direction by the handle 5-2 to release the end plate 7, which is then lifted away by the hoisting equipment.

[0022] The embodiments described above are merely preferred solutions of this utility model, and are not intended to limit the scope of this utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this utility model. Therefore, all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A fixture for non-destructive testing of end plates, used to carry end plates (7) and send end plates (7) into a non-destructive testing chamber, characterized in that, include: The support rod (1), the support platform (2) for placing the end plate (7), the base (3), the railcar (4), the locking device (5) and the clamp (6) are provided. The base (3) is placed on the upper surface of the railcar (4) and the base (3) is fixedly connected to the railcar (4) by the clamp (6). The bottom of the support rod (1) is vertically fixedly connected to one end of the base (3). The support platform (2) is set at an angle. The two opposite sides of the support platform (2) are fixedly connected to the top of the support rod (1) and the other end of the base (3) respectively. The bottom of the support platform (2) is provided with a locking device (5) for fixing the end plate (7). The locking device (5) is vertically fixedly connected to the support platform (2).

2. The tooling for non-destructive testing of end caps according to claim 1, characterized in that, The support platform (2) is a rectangular frame consisting of two longitudinal bars and two transverse bars, wherein the two longitudinal bars are arranged in parallel intervals and the two transverse bars are arranged in parallel intervals, and the longitudinal bars and transverse bars are fixedly connected to each other perpendicularly.

3. The tooling for non-destructive testing of end caps according to claim 1, characterized in that, The support platform (2) and the locking device (5) are fixedly connected by welding.

4. The tooling for non-destructive testing of end caps according to claim 1, characterized in that, The locking device (5) includes a slider (5-1), a handle (5-2), and a sliding groove (5-3). The sliding groove (5-3) is a rectangular groove with a one-way opening. The two groove walls on the opening side of the sliding groove (5-3) are fixedly connected to the bottom of the support platform (2). The slider (5-1) is located in the sliding groove (5-3). One end of the handle (5-2) passes through the bottom plate of the sliding groove (5-3) and is fixedly connected to the slider (5-1). By rotating the handle (5-2), the slider (5-1) is controlled to slide along the length direction of the sliding groove (5-3).

5. The tooling for non-destructive testing of end caps according to claim 1, characterized in that, The clamp (6) is an L-shaped workpiece, with the vertical rod in contact with and fixed to the base (3), and the horizontal rod close to the railcar (4).

6. The tooling for non-destructive testing of end caps according to claim 5, characterized in that, The vertical rod of the clamp (6) is fixedly connected to the base (3) by fasteners (6-1).

7. The tooling for non-destructive testing of end caps according to claim 6, characterized in that, The fastener (6-1) is a bolt.

8. The tooling for non-destructive testing of end plates according to claim 1, characterized in that, The clamp (6) is made of carbon steel.

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