Electromagnetic shielding protection structure of accelerator high-voltage power distribution unit

Abstract

The utility model relates to electromagnetic shielding protection structure technical field especially relates to an accelerator high -voltage power distribution unit set electromagnetic shielding protection structure. Its main view the problem that the existing shielding structure generally adopts full package formula or high airtightness design, and proposes the following technical scheme including main part and refrigeration mechanism, the main part includes electromagnetic shielding shell, and the side surface of electromagnetic shielding shell is hinged with electromagnetic shielding door, the inside of electromagnetic shielding shell and electromagnetic shielding door all has electromagnetic absorption coating, the inside of electromagnetic absorption coating sets up insulating spacer layer, and the inside of insulating spacer layer sets up grid shielding layer, the top inner wall of electromagnetic shielding shell is fixedly installed with evaporimeter, and the bottom of evaporimeter is installed with two group fans. The utility model solves the deficiency of traditional shielding structure, satisfies high -efficient, sealed leak -proof shielding while still can improve the cooling effect of equipment, ensures that accelerator high -voltage power distribution unit set long -term stable operation.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic shielding protection structure technology, and in particular to an electromagnetic shielding protection structure for an accelerator high-voltage power supply generator set. Background Technology

[0002] In the power transmission and transformation process of the accelerator, the high-voltage power distribution unit is the core equipment to ensure the transmission and distribution of high-voltage and high-current electrical energy. The working environment of the high-voltage power distribution unit is becoming increasingly complex. It not only needs to withstand the long-term effects of high-voltage electric fields and high-current magnetic fields, but also needs to deal with electromagnetic interference generated by other surrounding electrical equipment. At the same time, it also radiates strong electromagnetic energy when it is running. If effective protective measures are not taken, it will not only interfere with the performance of the device itself, but may also affect the normal operation of surrounding equipment, or even cause accelerator malfunction.

[0003] Based on the above, the inventors have discovered the following problems: Currently, mainstream electromagnetic shielding structures for accelerator high-voltage power supply generator sets on the market, in pursuit of higher electromagnetic shielding effectiveness, generally adopt a "fully enclosed" or "high-sealing" design. They often use thick steel plates, galvanized steel plates, or metal shielding meshes as shielding materials to comprehensively enclose key components such as the accelerator high-voltage power supply generator set body, terminals, and cooling system. Some structures also add auxiliary shielding components such as conductive rubber and wave-absorbing materials inside the metal shielding layer to further reduce electromagnetic leakage. While this design can effectively improve electromagnetic shielding, in actual operation, the excessive encapsulation and high-sealing structural characteristics severely hinder the dissipation of heat generated during the operation of the accelerator high-voltage power supply generator set, creating a core contradiction between "shielding effectiveness and heat dissipation efficiency," affecting the long-term stable operation of the accelerator high-voltage power supply generator set.

[0004] In view of the problem that existing shielding structures generally adopt a fully enclosed or highly sealed design, this utility model proposes a high-performance electromagnetic shielding protection structure for accelerator high-voltage power supply generator sets. Utility Model Content

[0005] The purpose of this invention is to address the problem that existing shielding structures generally adopt a fully enclosed or highly sealed design, and to propose an electromagnetic shielding protection structure for accelerator high-voltage power supply generator sets.

[0006] The technical solution of this utility model is: an electromagnetic shielding protection structure for a high-voltage power supply generator set of an accelerator, comprising a main body and a cooling mechanism;

[0007] The main body includes an electromagnetic shielding shell, and an electromagnetic shielding door is hinged to the side of the electromagnetic shielding shell; the inner sides of both the electromagnetic shielding shell and the electromagnetic shielding door are coated with an electromagnetic absorption coating, an insulating spacer layer is provided inside the electromagnetic absorption coating, and a mesh shielding layer is provided inside the insulating spacer layer.

[0008] An evaporator is fixedly installed on the top inner wall of the electromagnetic shielding shell, two sets of fans are installed at the bottom of the evaporator, and a shielding pad is installed on the inner outer edge of the electromagnetic shielding door.

[0009] The refrigeration mechanism includes a refrigeration box, the bottom of which is connected to the top of the electromagnetic shielding shell, and a condenser is inserted into the top of the refrigeration box.

[0010] Optionally, a compressor is installed inside the refrigeration box, with the input end of the compressor connected to the output end of the evaporator via a pipe, and the output end of the compressor connected to the input end of the condenser.

[0011] Optionally, a dryer filter is installed on one side of the compressor, and the input end of the dryer filter is connected to the output end of the condenser via a pipe.

[0012] Optionally, an expansion valve is installed on one side of the dryer filter, the output end of the dryer filter is connected to the expansion valve, and the other end of the expansion valve is connected to the input end of the evaporator.

[0013] Optionally, the thickness of the electromagnetic absorption coating is 0.5–2 mm;

[0014] The thickness of the insulating spacer layer is 3 to 8 mm.

[0015] Optionally, a shielding transition joint is inserted into the back side wall of the electromagnetic shielding shell. One end of the shielding transition joint penetrates the insulating spacer layer and the mesh shielding layer and extends into the interior of the electromagnetic shielding shell. A conical shielding ring is fitted onto one end of the shielding transition joint. A temperature sensor is installed on the inner wall of the electromagnetic shielding shell.

[0016] Optionally, a first grounding wire is installed on the bottom side of the mesh shielding layer, a second grounding wire is provided on one side of the first grounding wire, and one end of the second grounding wire is connected to a grounding terminal.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] This utility model forms a closed protective space by using an electromagnetic shielding shell and an electromagnetic shielding door. The inner electromagnetic absorption coating, the insulating spacer layer and the mesh shielding layer constitute a triple electromagnetic protection structure, which can efficiently absorb and block external electromagnetic interference and protect the normal operation of the internal high-voltage power distribution unit.

[0019] The shielding gasket of this utility model ensures that there are no gaps after the electromagnetic shielding door is closed, thus preventing electromagnetic leakage or infiltration.

[0020] Furthermore, this utility model also uses a refrigeration box and condenser in conjunction with an evaporator and a fan in the refrigeration mechanism to cool the inside of the electromagnetic shielding shell, preventing the power device from overheating and affecting its performance. When the fan is running, it can agitate the gas inside the electromagnetic shielding shell, improving the cooling effect on the equipment. Overall, it achieves dual protection of electromagnetic shielding and heat dissipation, and is suitable for the operation requirements of the accelerator high-voltage power supply generator set.

[0021] In summary, this utility model addresses the shortcomings of traditional shielding structures, achieving efficient, sealed, and leak-proof shielding while also improving the cooling effect of the equipment and ensuring the long-term stable operation of the accelerator's high-voltage power supply generator set. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of an electromagnetic shielding protection structure for a high-voltage power supply generator set of an accelerator.

[0023] Figure 2 yes Figure 1 Internal structure diagram;

[0024] Figure 3 for Figure 2 Another perspective illustration;

[0025] Figure 4 This is a schematic diagram of the cooling mechanism and the electromagnetic shielding shell.

[0026] Figure 5 This is a schematic diagram of the cross-section of the electromagnetic shielding shell.

[0027] Figure label:

[0028] 1. Main body; 101. Electromagnetic shielding shell; 102. Electromagnetic shielding door; 103. Shielding transition joint; 104. Conical shielding ring; 105. Shielding gasket; 106. First grounding wire; 107. Grounding terminal; 108. Second grounding wire; 109. Evaporator; 110. Fan; 111. Electromagnetic absorption coating; 112. Insulating spacer layer; 113. Mesh shielding layer;

[0029] 2. Refrigeration mechanism; 201. Refrigeration box; 202. Condenser; 203. Dryer filter; 204. Expansion valve; 205. Compressor. Detailed Implementation

[0030] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0031] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0032] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Example

[0036] like Figure 1 As shown, the present invention proposes an electromagnetic shielding protection structure for an accelerator high-voltage power supply generator set, comprising a main body 1 and a cooling mechanism 2.

[0037] like Figure 5As shown, the main body 1 includes an electromagnetic shielding shell 101, with an electromagnetic shielding door 102 hinged to its side. Both the electromagnetic shielding shell 101 and the electromagnetic shielding door 102 are coated with an electromagnetic absorption coating 111. This coating is made of carbonyl iron powder and has a thickness of 1.5 mm. The carbonyl iron powder electromagnetic absorption coating has excellent electromagnetic absorption performance, effectively absorbing external electromagnetic radiation and reducing electromagnetic interference. An insulating spacer layer 112 is provided inside the electromagnetic absorption coating 111. This spacer layer is made of fiberglass board and has a thickness of 6 mm. The fiberglass board insulating spacer layer has excellent insulation performance, isolating the electromagnetic absorption coating from the mesh shielding layer and preventing them from conducting electricity and affecting the protective effect. A mesh shielding layer 113 is provided inside the insulating spacer layer 112. This mesh shielding layer 113 is made of copper mesh. The copper mesh mesh shielding layer has good conductivity and high shielding efficiency, further blocking electromagnetic interference not absorbed by the electromagnetic absorption coating. Figure 3 As shown, a first grounding wire 106 is installed on the bottom side of the mesh shielding layer 113, and a second grounding wire 108 is provided on one side of the first grounding wire 106. One end of the second grounding wire 108 is connected to a grounding terminal 107. Furthermore, the first grounding wire of the mesh shielding layer is connected to the second grounding wire of the electromagnetic shielding shell, and then grounded through the grounding terminal. This can conduct the absorbed or induced electromagnetic charge into the ground, avoid the accumulation of charge affecting the shielding effect or damaging the internal device, and enhance the reliability and safety of electromagnetic protection.

[0038] As shown in the figure and Figure 2 As shown, a shielding transition joint 103 is inserted into the back side wall of the electromagnetic shielding shell 101. One end of the shielding transition joint 103 penetrates the insulating spacer layer 112 and the mesh shielding layer 113 and extends into the interior of the electromagnetic shielding shell 101. A conical shielding ring 104 is fitted onto one end of the shielding transition joint 103. A temperature sensor is installed on the inner wall of the electromagnetic shielding shell 101.

[0039] The specific shielded transition joint facilitates the access of external cables or pipes into the electromagnetic shielding shell, while also possessing its own shielding function to prevent the joint from becoming a weak point for electromagnetic leakage or infiltration. The conical shielding ring enhances the shielding effect at the joint, further reducing the transmission of electromagnetic interference through the joint and ensuring that the internal electrical devices are not affected by external interference. In addition to providing wiring holes for the protected equipment, the shielded transition joint can also be equipped with a temperature sensor to facilitate monitoring the internal temperature of the electromagnetic shielding shell, thereby improving the cooling effect of the refrigeration mechanism.

[0040] like Figure 3As shown, an evaporator 109 is fixedly installed on the top inner wall of the electromagnetic shielding shell 101, and two sets of fans 110 are installed at the bottom of the evaporator 109. A shielding pad 105 is installed on the inner outer edge of the electromagnetic shielding door 102. The shielding pad is made of conductive silicone strip. The conductive silicone strip material of the shielding pad has good elasticity and conductivity, and can tightly fill the gap between the electromagnetic shielding door and the shell to ensure the electromagnetic shielding integrity of the enclosed space.

[0041] Reference Figure 4 As shown, the refrigeration mechanism 2 includes a refrigeration box 201, the bottom of which is connected to the top of the electromagnetic shielding shell 101, and a condenser 202 is inserted into the top of the refrigeration box 201. A compressor 205 is installed inside the refrigeration box 201. The input end of the compressor 205 is connected to the output end of the evaporator 109 through a pipe, and the output end of the compressor 205 is connected to the input end of the condenser 202. The compressor inside the refrigeration box is connected to the evaporator and the condenser through a pipe, which can compress the low-temperature and low-pressure refrigerant vapor in the evaporator into high-temperature and high-pressure vapor, and deliver it to the condenser for heat dissipation and liquefaction, providing power for the refrigeration cycle, ensuring continuous and stable cooling of the refrigeration mechanism, and avoiding excessively high internal temperature of the electromagnetic shielding shell.

[0042] A dryer filter 203 is installed on one side of the compressor 205. The input end of the dryer filter 203 is connected to the output end of the condenser 202 through a pipe. Specifically, the dryer filter can filter out moisture and impurities in the refrigerant output by the condenser, prevent moisture from freezing and blocking the subsequent pipeline or impurities from wearing down the parts, ensure smooth refrigeration cycle, and extend the service life of the refrigeration mechanism.

[0043] An expansion valve 204 is installed on one side of the dryer filter 203. The output end of the dryer filter 203 is connected to the expansion valve 204, and the other end of the expansion valve 204 is connected to the input end of the evaporator 109. The expansion valve can reduce the pressure and throttle the high-pressure liquid refrigerant delivered by the dryer filter, convert it into low-temperature and low-pressure mist refrigerant and send it into the evaporator, so that it absorbs heat and vaporizes in the evaporator, thereby cooling the inside of the electromagnetic shielding shell, accurately controlling the refrigerant state, and improving the refrigeration efficiency.

[0044] In practical use, the accelerator high-voltage power supply generator set is first placed inside the electromagnetic shielding shell 101 of the main body 1. The electromagnetic shielding door 102, which is hinged, is closed. The conductive silicone strip shielding pad 105 on the inner and outer edges of the door tightly fills the gap between the electromagnetic shielding door 102 and the shell, ensuring that there is no electromagnetic leakage or infiltration channel in the enclosed space. The carbonyl iron powder electromagnetic absorption coating 111 on the inner side of the electromagnetic shielding shell 101 and the electromagnetic shielding door 102 first absorbs external electromagnetic radiation. The glass fiber board insulating spacer 112 in the middle isolates the electromagnetic absorption coating 111 from the copper mesh shielding layer 113, preventing conductivity from affecting the protective effect. The mesh shielding layer 113 further blocks the electromagnetic interference that is not absorbed. At the same time, the first grounding wire 106 on the bottom side of the mesh shielding layer 113 is connected to the second grounding wire 108 on the bottom side of the electromagnetic shielding shell 101. The absorbed or induced electromagnetic charge is conducted to the ground through the grounding terminal 107 to avoid charge accumulation. The refrigeration mechanism 2 is started, and the compressor 205 in the refrigeration box 201 draws from the evaporator 109 through the pipe. Low-temperature, low-pressure refrigerant vapor is compressed into high-temperature, high-pressure vapor and then transported to the condenser 202 at the top of the refrigeration chamber 201 for heat dissipation and liquefaction. The liquefied refrigerant flows into the dryer filter 203, filters out moisture and impurities, and then enters the expansion valve 204. After pressure reduction and throttling, it is converted into low-temperature, low-pressure mist refrigerant and then transported to the evaporator 109 at the top of the electromagnetic shielding shell 101. The evaporator 109 absorbs internal heat to vaporize the refrigerant. At the same time, the fan 110 at the bottom of the evaporator 109 agitates the internal gas, accelerates heat transfer, and achieves cooling. The vaporized refrigerant returns to the compressor 205 to complete the cycle. By installing a temperature sensor, the internal temperature change of the electromagnetic shielding shell 101 can be monitored in real time, thereby controlling the cooling effect of the refrigeration mechanism 2. External cables or pipes are connected to the interior through the shielding transition joint 103 on the bottom side of the electromagnetic shielding shell 101. The conical shielding ring 104 at one end enhances the shielding effect at the joint and avoids electromagnetic interference from being transmitted through the joint. The whole system achieves dual protection of electromagnetic shielding and efficient heat dissipation, ensuring the stable operation of the accelerator high-voltage power supply generator set.

[0045] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An electromagnetic shielding protection structure for a high-voltage power supply generator set of an accelerator, characterized in that, Includes the main body (1) and the refrigeration mechanism (2); The main body (1) includes an electromagnetic shielding shell (101), and an electromagnetic shielding door (102) is hinged to the side of the electromagnetic shielding shell (101); the inner sides of the electromagnetic shielding shell (101) and the electromagnetic shielding door (102) are coated with an electromagnetic absorption coating (111), an insulating spacer layer (112) is provided on the inner side of the electromagnetic absorption coating (111), and a mesh shielding layer (113) is provided on the inner side of the insulating spacer layer (112); An evaporator (109) is fixedly installed on the top inner wall of the electromagnetic shielding shell (101), two sets of fans (110) are installed at the bottom of the evaporator (109), and a shielding pad (105) is installed on the inner outer edge of the electromagnetic shielding door (102). The refrigeration mechanism (2) includes a refrigeration box (201), the bottom end of which is connected to the top end of the electromagnetic shielding shell (101), and a condenser (202) is inserted into the upper end of the refrigeration box (201).

2. The electromagnetic shielding protection structure for an accelerator high-voltage power supply generator set according to claim 1, characterized in that, The refrigerator (201) is equipped with a compressor (205). The input end of the compressor (205) is connected to the output end of the evaporator (109) through a pipe, and the output end of the compressor (205) is connected to the input end of the condenser (202).

3. The electromagnetic shielding protection structure for an accelerator high-voltage power supply generator set according to claim 2, characterized in that, A dryer filter (203) is installed on one side of the compressor (205), and the input end of the dryer filter (203) is connected to the output end of the condenser (202) through a pipe.

4. The electromagnetic shielding protection structure for an accelerator high-voltage power supply generator set according to claim 3, characterized in that, An expansion valve (204) is installed on one side of the dryer filter (203), the output end of the dryer filter (203) is connected to the expansion valve (204), and the other end of the expansion valve (204) is connected to the input end of the evaporator (109).

5. The electromagnetic shielding protection structure for an accelerator high-voltage power supply generator set according to claim 1, characterized in that, The thickness of the electromagnetic absorption coating (111) is 0.5–2 mm; The thickness of the insulating spacer layer (112) is 3 to 8 mm.

6. The electromagnetic shielding protection structure for an accelerator high-voltage power supply generator set according to claim 1, characterized in that, A shielding transition joint (103) is inserted into the back side wall of the electromagnetic shielding shell (101). One end of the shielding transition joint (103) penetrates the insulating spacer layer (112) and the mesh shielding layer (113) and extends into the interior of the electromagnetic shielding shell (101). A conical shielding ring (104) is fitted onto one end of the shielding transition joint (103). A temperature sensor is installed on the inner wall of the electromagnetic shielding shell (101).

7. The electromagnetic shielding protection structure for an accelerator high-voltage power supply generator set according to claim 6, characterized in that, A first grounding wire (106) is installed on the bottom side of the mesh shielding layer (113), and a second grounding wire (108) is provided on one side of the first grounding wire (106). One end of the second grounding wire (108) is connected to a grounding terminal (107).

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