Device applied to ACCT magnetic shielding

Abstract

The invention discloses a device applied to ACCT magnetic shielding, and the device comprises a magnetic shielding body, the magnetic shielding body is divided into an upper shielding part and a lower shielding part, the upper shielding part comprises an upper cover plate, upper supporting columns are fixed at the two ends of the bottom of the upper cover plate through inner hexagon screws, and upper shielding plates are fixed at the two ends of the upper supporting columns through inner hexagon screws; the lower shielding part comprises a lower cover plate, lower supporting columns are fixed to the two ends of the top of the lower cover plate through inner hexagon screws, lower shielding plates are fixed to the two ends of the lower supporting columns through inner hexagon screws, side plates are fixedly installed between the upper supporting columns and the lower supporting columns through inner hexagon screws, and the upper shielding part and the lower shielding part are combined into a whole through the side plates. The ACCT shielding device has the advantages that the ACCT shielding device can shield a magnetic field in the surrounding environment, is also suitable for ACCTs of different types and sizes, is convenient to install and has wide universality.

Description

Technical Field

[0001] The invention belongs to the field of high energy beam line particle accelerator beam current diagnosis, and more specifically, particularly relates to a device applied to ACCT magnetic shielding. Background Art

[0002] At present, in high-energy physics experiments and industrial applications, accurate measurement of proton beam intensity is crucial for the accuracy of experimental results and the optimization of industrial processes. However, various magnets, solenoids and other devices are usually installed on the accelerator beam pipeline, resulting in various complex magnetic fields distributed in space, which in turn interfere with the stability of the measurement results of related beam diagnostic equipment.

[0003] The accelerator AC transformer (ACCT) is a high-precision beam measurement device used to detect the peak current intensity characteristics of the beam. Since the detection object is the accelerator beam, the characteristic of this type of beam is that the current intensity is usually weak. The environmental magnetic field will affect the ACCT device's acquisition of the current signal, resulting in errors in the data output by the ACCT. It cannot adapt to different beam line pipeline outer diameters. There is no dedicated ACCT magnetic shielding device to assist in testing. Therefore, the ACCT needs to have high measurement accuracy. Therefore, it is required to reduce or eliminate the surrounding magnetic field interference that the AC transformer (ACCT) may suffer during operation. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a device for ACCT magnetic shielding to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A device applied to ACCT magnetic shielding, comprising a bracket, an AC mutual inductor is installed in the bracket, one end of the AC mutual inductor is connected to a beam pipe, one end of the beam pipe is installed with a magnetic shielding body, the magnetic shielding body is divided into an upper shielding part and a lower shielding part, the upper shielding part comprises an upper cover plate, the two ends of the bottom of the upper cover plate are fixed with upper support columns by hexagon socket screws, the two ends of the upper support column are fixed with the upper shielding plate by hexagon socket screws, the lower shielding part comprises a lower cover plate, the two ends of the top of the lower cover plate are fixed with lower support columns by hexagon socket screws, the two ends of the lower support column are fixed with the lower shielding plate by hexagon socket screws, a side plate is fixedly installed between the upper support column and the lower support column by hexagon socket screws, the upper shielding part and the lower shielding part are combined into a whole by the side plate, and the upper shielding plate is attached to the inner wall of the lower shielding plate and installed in an overlapping manner.

[0006] As an optional solution of the present invention, a beam opening slot is provided on the upper shielding plate, the beam opening slot is semicircular, and symmetrical waist holes are provided on both sides of the beam opening slot.

[0007] As an optional solution of the present invention, a beam opening slot is also provided on the top of the lower shielding plate, and the beam opening slot is semicircular, and symmetrical waist holes are provided on the lower shielding plate.

[0008] As an optional solution of the present invention, the side panels are provided with waist holes which are symmetrical in upper and lower directions.

[0009] As an optional solution of the present invention, the upper cover plate is provided with symmetrical mounting holes and is fixed to the bracket by upper positioning screws.

[0010] As an optional solution of the present invention, the lower cover plate is also provided with symmetrical mounting holes, and is fixed to the bracket by lower positioning screws.

[0011] As an optional solution of the present invention, all parts of the magnetic shielding body are made of DT4C electrical pure iron material, and the surfaces thereof are subjected to phosphating and blackening treatments.

[0012] The present invention provides a device for ACCT magnetic shielding, which has the following beneficial effects: The magnetic shielding body is divided into an upper shielding part and a lower shielding part to achieve quick disassembly and assembly. The upper shielding plate and the upper cover plate are fastened together with the upper support column by hexagon socket screws respectively; the lower shielding plate and the lower cover plate are fastened together with the lower support column by hexagon socket screws respectively; the upper and lower parts are connected to each other by side plates and hexagon socket screws on both sides to form the whole device, which has a simple structure and is easy to install. The side plates, the upper shielding plate and the lower shielding plate are all provided with waist holes to achieve vertical adjustment to adapt to different outer diameters of beam line pipes; the overlapping installation method is adopted to avoid installation gaps in the axis direction of the beam line, thereby ensuring the measurement accuracy of ACCT. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the upper shielding part of the present invention; Figure 2 It is a schematic structural view of the lower shielding part of the present invention; Figure 3 It is the overall assembly diagram of the magnetic shielding body of the present invention; Figure 4 It is the overall assembly diagram of the magnetic shielding body of the present invention; Figure 5 It is the overall installation diagram of the present invention.

[0014] In the figure: 1. upper cover plate; 2. hexagon socket screw; 3. upper shielding plate; 4. upper support column; 5. lower shielding plate; 6. lower cover plate; 7. lower support column; 8. upper positioning screw; 9. lower positioning screw; 10. gasket; 11. side plate; 12. waist hole; 13. bracket; 14. AC transformer; 15. beam duct; 16. magnetic shielding body. DETAILED DESCRIPTION

[0015] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0016] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] See also Figures 1 to 5 The present invention provides a technical solution: a device applied to ACCT magnetic shielding, comprising a bracket 13, an AC transformer 14 is installed in the bracket 13, one end of the AC transformer 14 is connected to a beam pipe 15, one end of the beam pipe 15 is installed with a magnetic shielding body 16, the magnetic shielding body 16 is divided into an upper shielding part and a lower shielding part, the upper shielding part comprises an upper cover plate 1, upper support columns 4 are fixed at both ends of the bottom of the upper cover plate 1 by hexagon socket screws 2, upper shielding plates 3 are fixed at both ends of the upper support columns 4 by hexagon socket screws 2, a beam opening slot is arranged on the upper shielding plate 3, the beam opening slot is semicircular, and symmetrical waist holes 12 are arranged on both sides of the beam opening slot.

[0019] The lower shielding part includes a lower cover plate 6, and lower support columns 7 are fixed to the two ends of the top of the lower cover plate 6 by hexagon socket screws 2. The two ends of the lower support column 7 are fixed to the lower shielding plate 5 by hexagon socket screws 2. A beam opening groove is also provided on the top of the lower shielding plate 5, and the beam opening groove is semicircular.

[0020] Symmetrical waist holes 12 are provided on the lower shielding plate 5, and a side plate 11 is fixedly installed between the upper support column 4 and the lower support column 7 by means of hexagon socket screws 2. The upper shielding part and the lower shielding part are combined into a whole by means of the side plate 11. The side plate 11 is provided with waist holes 12 symmetrical up and down. The upper shielding plate 3 is attached to the inner wall of the lower shielding plate 5 to ensure that they are not in the same plane. An overlapping installation method is adopted to avoid installation gaps in the axial direction of the beam line. The waist holes 12 are used for quick fixing and installation, and the fixing is completed by means of gaskets 10 and bolts and nuts. The waist holes 12 on the side plate 11 are combined for free fine-tuning to adapt to different outer diameters of beam line pipes and realize vertical adjustability.

[0021] The upper cover plate 1 is provided with symmetrical mounting holes, which are fixed to the bracket 13 by upper positioning screws 8. The lower cover plate 6 is also provided with symmetrical mounting holes, which are fixed to the bracket 13 by lower positioning screws 9, thereby ensuring the overall stable test. All parts of the magnetic shielding body 16 are made of DT4C electrical pure iron material, which has the characteristics of high magnetic permeability and low hysteresis loss, and its surface is phosphated and blackened to prevent rust from affecting the use of the device.

[0022] Specific usage and function of this embodiment: Since the entire beam pipeline 15 needs to be evacuated after installation and commissioning, the magnetic shielding body 16 is quickly installed on the pipeline and can be freely disassembled without disassembling the entire pipeline. The upper shielding plate 3 and the upper cover plate 1 are fastened together with the upper support column 4 by the hexagon socket screws 2 respectively; the lower shielding plate 5 and the lower cover plate 6 are fastened together with the lower support column 7 by the hexagon socket screws 2 respectively; the upper and lower parts are connected to each other by the side plates 11 on both sides and the hexagon socket screws 2 to form the whole device. The positioning screws installed on the upper and lower cover plates 6 are used to fix and adjust the position of the whole device on the beam line. The magnetic shielding device is installed on its bracket 13 along the axis direction of the beam line as a whole. In order to ensure that this device can adapt to different outer diameters of beam line pipelines, a waist hole 12 is opened at the connection between the upper and lower parts to achieve vertical adjustability; at the same time, in order to prevent the environmental magnetic field from entering from the axis gap, an overlapping installation method is adopted to avoid the generation of installation gaps in the axis direction of the beam line, thereby ensuring the measurement accuracy of ACCT.

[0023] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 embodiments of the present invention.

Claims

1. A device for ACCT magnetic shielding, comprising a bracket (13), an AC transformer (14) installed in the bracket (13), one end of the AC transformer (14) being connected to a beam pipe (15), and one end of the beam pipe (15) being installed with a magnetic shielding body (16), characterized in that: The magnetic shielding body (16) is divided into an upper shielding part and a lower shielding part, the upper shielding part comprises an upper cover plate (1), the upper support columns (4) are fixed to the two ends of the bottom of the upper cover plate (1) by means of hexagon socket screws (2), the upper shielding plate (3) is fixed to the two ends of the upper support column (4) by means of hexagon socket screws (2), the lower shielding part comprises a lower cover plate (6), the lower support columns (7) are fixed to the two ends of the top of the lower cover plate (6) by means of hexagon socket screws (2), the lower shielding plate (5) is fixed to the two ends of the lower support column (7) by means of hexagon socket screws (2), a side plate (11) is fixedly installed between the upper support column (4) and the lower support column (7) by means of hexagon socket screws (2), the upper shielding part and the lower shielding part are combined into a whole by means of the side plate (11), the upper shielding plate (3) is attached to the inner wall of the lower shielding plate (5) and is installed in an overlapping manner.

2. The device for ACCT magnetic shielding according to claim 1, characterized in that: The upper shielding plate (3) is provided with a beam opening slot, which is semicircular in shape, and symmetrical waist holes (12) are provided on both sides of the beam opening slot.

3. The device for ACCT magnetic shielding according to claim 1, characterized in that: The top of the lower shielding plate (5) is also provided with a beam opening slot, and the beam opening slot is semicircular, and the lower shielding plate (5) is provided with symmetrical waist holes (12).

4. The device for ACCT magnetic shielding according to claim 1, characterized in that: The side plate (11) is provided with waist holes (12) which are symmetrical in upper and lower directions.

5. The device for ACCT magnetic shielding according to claim 1, characterized in that: The upper cover plate (1) is provided with symmetrical mounting holes and is fixed to the bracket (13) via upper positioning screws (8).

6. The device for ACCT magnetic shielding according to claim 1, characterized in that: The lower cover plate (6) is also provided with symmetrical mounting holes and is fixed to the bracket (13) via lower positioning screws (9).

7. The device for ACCT magnetic shielding according to claim 1, characterized in that: All parts of the magnetic shielding body (16) are made of DT4C electrical pure iron material, and their surfaces are subjected to phosphating and blackening treatments.

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