Rotary supporting device for CT (Computed Tomography) detection

Abstract

The utility model relates to a rotary supporting device for CT (Computed Tomography) detection. The rotary supporting device comprises a radiation source (11) and a detection plate (12), an annular guide rail (21); guide wheels (23) are rotationally arranged on the sliding plate (22), and the multiple guide wheels (23) are oppositely arranged on the inner side and the outer side of the annular guide rail (21) and matched with the annular guide rail (21); under the guiding action of guide wheels (23) oppositely arranged on the inner side and the outer side of an annular guide rail (21), a sliding plate (22) can stably slide along the annular guide rail (21), so that a radiation source (11) and a detection plate (12) are driven to relatively and synchronously rotate in the circumferential direction of the annular guide rail (21), a GIL pipeline (10) is scanned and detected at a limited angle, and compared with traditional CT equipment, the size and the weight are reduced, and the cost is reduced. The method is suitable for defect detection of the GIL pipeline in the on-site service state, the pipeline does not need to be disassembled and assembled, damage to the pipeline and equipment is avoided, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-high voltage power transmission equipment detection, in particular to a rotating support device for CT detection. Background Art

[0002] GIL (gas insulated metal enclosed transmission lines), that is, gas insulated metal transmission lines, have the characteristics of large transmission capacity, flexible spatial distribution, and small environmental impact. They have been widely used in the field of large-capacity and long-distance power transmission. Considering the safety of the power grid, the research work on early defect detection and early warning technology of UHV GIL pipeline connection structure is of great significance to the safe, stable and economical operation of the power grid. CT imaging is a common non-destructive defect detection technology for pipe bodies, but traditional CT equipment is generally large in size and weight, and is not suitable for defect detection of GIL pipelines in service on site. Disassembly and installation of pipelines will cause damage to pipelines and equipment, and it is time-consuming and labor-intensive. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the traditional CT equipment is generally large in size and weight, and is not suitable for defect detection of GIL pipelines in service on site. Therefore, the pipelines need to be disassembled, which will cause damage to the pipelines and equipment, and is time-consuming and labor-intensive.

[0004] In order to solve the above problems, the utility model provides a rotating support device for CT detection, including a ray source, a detection plate, and an annular guide rail. The ray source and the detection plate are relatively arranged along the radial direction of the annular guide rail, and are both slidably installed on the annular guide rail through a slide plate. A guide wheel is rotatably provided on the slide plate, and a plurality of guide wheels are relatively arranged on the inner and outer sides of the annular guide rail and cooperate with the annular guide rail.

[0005] The CT detection rotating support device provided by the utility model also has the following technical features:

[0006] A motor is fixed on the slide plate, the output shaft of the motor is fixed to a gear, the gear is coaxially arranged with one of the guide wheels, the gear is meshed with a gear ring, and the gear ring is fixed on the end surface of the annular guide rail.

[0007] The number of the guide wheels is 4-6.

[0008] A groove is formed on the outer surface of the guide wheel, and protrusions matching with the groove are fixed on the inner and outer surfaces of the annular guide rail.

[0009] A connecting plate is vertically fixed on the slide plate, the radiation source or the detection plate is fixed to the adjustment plate, the end of the adjustment plate is rotatably connected to the connecting plate, a sliding groove is provided on the connecting plate, a sliding block is slidably provided in the sliding groove, the sliding block is rotatably connected to one end of the adjustment rod, and the other end of the adjustment rod is rotatably connected to the middle of the adjustment plate.

[0010] A lead screw is rotatably arranged on the connecting plate, the lead screw is threadedly connected to the slider, and a handle is fixed to the end of the lead screw.

[0011] The utility model has the following beneficial effects: under the guiding action of the guide wheels relatively arranged on the inner and outer sides of the annular guide rail, the slide plate can stably slide along the annular guide rail, thereby driving the radiation source and the detection plate to rotate relatively synchronously along the circumference of the annular guide rail, so as to perform limited-angle scanning and inspection of the GIL pipeline. Compared with traditional CT equipment, the volume and weight are reduced, and it is suitable for defect detection of GIL pipelines in service on site. There is no need to disassemble the pipeline, which avoids damage to the pipeline and equipment and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an axonometric drawing of the utility model;

[0013] Figure 2 It is a schematic diagram of the connection structure between the detection plate and the annular guide rail;

[0014] Figure 3 for Figure 2 Axonometric drawing from another perspective;

[0015] Figure 4 It is a schematic diagram of the connection structure between the slide plate, the radiation source and the detection plate. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0017] like Figures 1 to 4 As shown, the utility model CT detection rotating support device includes a ray source 11, a detection plate 12, and an annular guide rail 21. The ray source 11 and the detection plate 12 are relatively arranged along the radial direction of the annular guide rail 21, and are both slidably installed on the annular guide rail 21 through a slide plate 22. A guide wheel 23 is rotatably provided on the slide plate 22. A plurality of guide wheels 23 are relatively arranged on the inner and outer sides of the annular guide rail 21 and cooperate with the annular guide rail 21.

[0018] Under the guidance of the guide wheels 23 relatively arranged on the inner and outer sides of the annular guide rail 21, the slide plate 22 can stably slide along the annular guide rail 21, thereby driving the radiation source 11 and the detection plate 12 to rotate relatively synchronously along the circumference of the annular guide rail 21, so as to perform a limited angle scanning and inspection on the GIL pipeline 10. Compared with traditional CT equipment, the volume and weight are reduced, and it is suitable for defect detection of GIL pipelines in service on site, without disassembling the pipeline, avoiding damage to the pipeline and equipment, and improving work efficiency.

[0019] When using the device, the ray source 11 and the detection plate 12 can be respectively arranged on the same side or on different sides of the annular guide rail 21. Figure 1 The diagram shown in FIG. 1 is a schematic diagram of the arrangement on the opposite side.

[0020] The annular guide rail 21 is arranged outside the GIL pipe 10 , and a fixing device with a supporting function is provided on the annular guide rail 21 ; the radiation source 11 and the detection plate 12 are arranged on the annular guide rail 21 at an angle of 180° relative to each other.

[0021] The guide wheel 23 cooperates with the annular guide rail 21 in such a way that the guide wheel 23 rolls along the annular guide rail 21 so that the slide plate 22 slides along the annular guide rail 21 ; the number of the guide wheels 23 is an even number and is at least 4.

[0022] The gear 25 is rotationally connected to one of the guide wheels 23 .

[0023] Preferably, a motor 24 is fixed on the slide plate 22 , the output shaft of the motor 24 is fixed to a gear 25 , the gear 25 is coaxially arranged with one of the guide wheels 23 , the gear 25 meshes with a gear ring 26 , and the gear ring 26 is fixed on the end face of the annular guide rail 21 .

[0024] The utility model drives the gear 25 on the slide plate 22 to rotate through the output shaft of the motor 24 , and the gear 25 meshes with the gear ring 26 to achieve the relative synchronous rotation of the ray source 11 and the detection plate 12 along the circumferential direction of the annular guide rail 21 .

[0025] Among them, a motor 24 and a gear 25 may also be additionally provided, so that the gear 25 and each guide wheel 23 are not coaxially arranged, so as to avoid unstable connection and transmission caused by a reduction in the number of guide wheels 23 .

[0026] The annular guide rail 21 and the gear ring 26 can be opened into a half ring, or assembled into a circular structure.

[0027] Preferably, the number of the guide wheels 23 is 4-6 to improve the stability and carrying capacity of the device.

[0028] Preferably, a groove 27 is formed on the outer surface of the guide wheel 23, and protrusions 28 cooperating with the groove 27 are fixed on the inner and outer surfaces of the annular guide rail 21 to prevent failure of the connection between the guide wheel 23 and the annular guide rail 21 in its axial direction.

[0029] Preferably, a connecting plate 31 is vertically fixed on the slide plate 22, the radiation source 11 or the detection plate 12 is fixed to the adjustment plate 32, the end of the adjustment plate 32 is rotatably connected to the connecting plate 31, a sliding groove 33 is opened on the connecting plate 31, a sliding block 34 is slidably provided in the sliding groove 33, the sliding block 34 is rotatably connected to one end of the adjustment rod 35, and the other end of the adjustment rod 35 is rotatably connected to the middle of the adjustment plate 32.

[0030] The utility model controls the slider 34 to slide along the slide groove 33 on the connecting plate 31 to drive the adjusting rod 35 to swing, so that the adjusting plate 32 rotates around its end, thereby changing the orientation angle of the ray source 11 and the detection plate 12.

[0031] The slide groove 33 , the slider 34 and the adjustment plate 32 are all arranged perpendicular to the radial direction of the GIL pipe 10 .

[0032] The cross-sections of the slide groove 31 and the slider 32 are dovetail-shaped, T-shaped or other shapes that fit together.

[0033] When the ray source 11 and the detection plate 12 are respectively arranged on the same side of the annular guide rail 21 , there is no need to adjust the orientation angles of the two.

[0034] Preferably, a lead screw 36 is rotatably provided on the connecting plate 31 , the lead screw 36 is threadedly connected to the slider 34 , and a handle 37 is fixed to the end of the lead screw 36 .

[0035] This is to adjust and lock the orientation angles of the ray source 11 and the detection plate 12 .

[0036] The axes of the hinge shafts at both ends of the adjusting rod 35 are parallel to the axes of rotational connection between the adjusting plate 32 and the sliding groove 33 , and are arranged perpendicular to the lead screw 36 .

[0037] Of course, other driving modes may be used to replace the above driving structure, for example, an electric push rod or a hydraulic rod may be used to drive the slider 34 to slide along the slide groove 33, and a motor may be used to drive the lead screw to rotate instead of manually rotating the handle 37.

[0038] The working principle of the utility model is as follows:

[0039] The annular guide rail 21 and the gear ring 26 are arranged outside the GIL pipeline 10, and the radiation source 11 and the detection plate 12 are installed on the annular guide rail 21 through the slide plate 22; the gear 25 on the slide plate 22 is driven to rotate by the output shaft of the motor 24, and the gear 25 is meshed with the gear ring 26. At the same time, under the guiding action of the guide wheels 23 relatively arranged on the inner and outer sides of the annular guide rail 21, the slide plate 22 can stably slide along the annular guide rail 21, so that the radiation source 11 and the detection plate 12 can rotate relatively synchronously along the circumference of the annular guide rail 21, so as to perform a limited angle scanning and detection on the GIL pipeline 10. Compared with traditional CT equipment, the volume and weight are reduced, and it is suitable for defect detection of GIL pipelines in service on site, without disassembling the pipeline, avoiding damage to the pipeline and equipment, and improving work efficiency; the slider 34 can also be controlled to slide along the slide groove 33 on the connecting plate 31, driving the adjustment rod 35 to swing, so that the adjustment plate 32 rotates around its end, thereby changing the orientation angle of the radiation source 11 and the detection plate 12.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A rotating support device for CT detection, comprising a radiation source (11) and a detection plate (12), characterized in that: It also includes an annular guide rail (21), wherein the ray source (11) and the detection plate (12) are arranged opposite to each other along the radial direction of the annular guide rail (21), and are both slidably mounted on the annular guide rail (21) via a slide plate (22), and a guide wheel (23) is rotatably arranged on the slide plate (22), and a plurality of guide wheels (23) are arranged opposite to each other on the inner and outer sides of the annular guide rail (21) and cooperate with the annular guide rail (21); A connecting plate (31) is vertically fixed on the slide plate (22), the radiation source (11) or the detection plate (12) is fixed to the adjustment plate (32), the end of the adjustment plate (32) is rotatably connected to the connecting plate (31), a sliding groove (33) is provided on the connecting plate (31), a sliding block (34) is slidably provided in the sliding groove (33), the sliding block (34) is rotatably connected to one end of an adjustment rod (35), and the other end of the adjustment rod (35) is rotatably connected to the middle of the adjustment plate (32); A lead screw (36) is rotatably provided on the connecting plate (31), the lead screw (36) is threadedly connected to the slider (34), and a handle (37) is fixed at the end of the lead screw (36).

2. The rotating support device for CT detection according to claim 1, characterized in that: A motor (24) is fixed on the slide plate (22), the output shaft of the motor (24) is fixed to a gear (25), the gear (25) is coaxially arranged with one of the guide wheels (23), the gear (25) is meshed with a gear ring (26), and the gear ring (26) is fixed on the end surface of the annular guide rail (21).

3. The rotating support device for CT detection according to claim 1, characterized in that: The number of the guide wheels (23) is 4-6.

4. The rotating support device for CT detection according to claim 1, characterized in that: The outer surface of the guide wheel (23) is provided with a groove (27), and the inner and outer surfaces of the annular guide rail (21) are both fixed with protrusions (28) that match the groove (27).

Images