Rectifying assembly for electron accelerator

Abstract

The utility model relates to a rectifying component for an electron accelerator, which comprises a diode and is characterized by further comprising a base, insulating battens are arranged on a pair of sides of the base, and a rectifying unit is vertically arranged between the two insulating battens. Each rectifying unit comprises an aluminum sleeve with a regular octagonal cross section, a pair of sides of the aluminum sleeve are respectively connected with the corresponding insulating battens, and the upper end and the lower end of the aluminum sleeve are respectively provided with a grading ring. And the grading rings between the same sides of the insulating battens are provided with inner convex rings, and the two inner convex rings are respectively connected with the upper end and the lower end of the aluminum sleeve. And an insulating plate is connected between the two inner convex rings at the lower end of the aluminum sleeve. Tube plates are arranged in the aluminum sleeves, diodes are arranged on the tube plates, and the diodes on the same tube plate are connected in series. And between adjacent rectification units, the output end positive electrode of one rectification unit is connected with the output end negative electrode of the other rectification unit in series. The LED lamp is good in heat dissipation effect and long in service life. According to the utility model, normal operation of the electron accelerator can be ensured. The utility model is suitable for electron accelerators.

Description

Technical Field

[0001] The utility model relates to a rectifier, specifically, a rectifier device for providing a direct current voltage for an electron accelerator, and is particularly suitable for an electron accelerator with a direct current voltage of 50,000 volts. Background Art

[0002] It is well known in the electron accelerator production and application industry that the rectifiers used in electron accelerators are all high-voltage rectifiers. At present, most high-voltage rectifiers used in electron accelerators are composed of multiple diodes connected in series and then potted together with epoxy resin. The high-voltage rectifiers with this structure have the following problems: First, due to the use of potting, the heat dissipation effect of the potted high-voltage rectifier is poor and the service life is not long; second, the use of potting causes the electric field to be too concentrated, which can easily lead to voltage breakdown, thereby damaging the electron accelerator and preventing it from operating normally. Utility Model Content

[0003] The problem to be solved by the utility model is to overcome the above-mentioned shortcomings and provide a rectifier component for an electron accelerator. The utility model has good heat dissipation effect and long service life. The utility model can avoid the excessive concentration of electric field and voltage breakdown, and ensure the normal operation of the electron accelerator.

[0004] The above-mentioned problems to be solved by the utility model are achieved by the following technical solutions:

[0005] The rectifier assembly for electron accelerator of the utility model includes a diode, and its characteristics are: it also includes a base, and a pair of sides of the base are provided with insulating strips, and the two insulating strips are arranged vertically, and there are no less than two rectifier units between them in the vertical direction. The rectifier unit contains an aluminum sleeve with a regular octagonal cross section, and a pair of opposite sides of the aluminum sleeve are respectively connected with corresponding insulating strips, and the upper and lower ends thereof are provided with equalizing rings. The inner diameter of the equalizing ring is adapted to the spacing between the transverse centers of the outer sides of the two insulating strips, and they are all sleeved outside the insulating strips. The equalizing rings between the same sides of the insulating strips are provided with inner convex rings, and the two inner convex rings are respectively connected with the upper and lower ends of the aluminum sleeve. An insulating plate is connected between the two inner convex rings on the equalizing ring at the lower end of the aluminum sleeve, and a pair of sides of the insulating plate are provided with straight edges that match the two insulating strips. A tube sheet is provided in the aluminum sleeve, and the inner side surface of the aluminum sleeve is uniformly provided with axial convex ribs in the circumferential direction, and the axial convex ribs are provided with bayonet holes at the same axial position, and the edge of the tube sheet is clamped into the corresponding bayonet holes. There are at least two diodes on the tube plate, and the diodes on the same tube plate are connected in series. Between adjacent rectifier units: the positive output terminal of one rectifier unit is connected in series with the negative output terminal of another rectifier unit.

[0006] Wherein: the axial rib is evenly distributed with at least two said bayonet holes in the axial direction. The aluminum sleeve has at least two tube sheets, and the edges of the two tube sheets are respectively clamped into the corresponding bayonet holes at the same height.

[0007] The tube sheets in the same aluminum sleeve and the bottom tube sheet and the insulating plate are all connected together in an insulated manner.

[0008] The tube sheets in the same aluminum sleeve and the bottom tube sheet and the insulating plate are connected together by means of screws and nuts. Insulating sleeves are provided on the screws between the upper tube sheet and the lower tube sheet and on the screws between the lower tube sheet and the insulating plate.

[0009] The corresponding surfaces of the six sides of the aluminum sleeve which are not connected to the insulating strips are all provided with heat dissipation holes.

[0010] The aluminum sleeve has axial holes on the upper and lower ends of the two corners not adjacent to the insulating strips, and two axial holes are provided on the two inner convex rings corresponding to the axial holes, and screws are connected between the axial holes and the corresponding axial holes on the same corner. The upper and lower ends of the screws extend above the inner convex ring and below the insulating plate, respectively, and there is a discharge gap between the two first screw protruding ends.

[0011] It can be seen from the above scheme that since the utility model contains a base, there are insulating strips on a pair of sides of the base, and the two insulating strips are arranged vertically. The vertical direction between them can set multiple rectifier units according to the size of the rectifier voltage. The rectifier unit contains an aluminum sleeve with a regular octagonal cross-section, and its opposite pairs of sides are respectively connected to the corresponding insulating strips, and there are equalizing rings at the upper and lower ends. The inner diameter of the equalizing ring is adapted to the spacing between the transverse centers of the outer sides of the two insulating strips, and they are all sleeved outside the insulating strips. The equalizing rings between the same sides of the insulating strips are provided with inner convex rings, and the two inner convex rings are respectively connected to the upper and lower ends of the aluminum sleeve. An insulating plate is connected between the two inner convex rings on the equalizing ring at the lower end of the aluminum sleeve. The insulating plate has straight edges on a pair of sides that match the two insulating strips. There is a tube sheet in the aluminum sleeve, and the inner side of the aluminum sleeve is uniformly distributed with axial convex ribs in the circumferential direction. There are bayonet holes at the same axial position of the axial convex ribs, and the edge of the tube sheet is snapped into the corresponding bayonet hole. There are at least two diodes on the tube sheet, and the diodes on the same tube sheet are connected in series. Between adjacent rectifier units: the positive output terminal of one rectifier unit is connected in series with the negative output terminal of another rectifier unit. It can be seen that the utility model realizes the rectification of high voltage electricity by arranging multiple tube sheets insulated from each other in multiple aluminum sleeves, and arranging multiple diodes connected in series on each tube sheet. Compared with the background technology, no encapsulation is required, which not only overcomes the problems of poor heat dissipation and short service life of high-voltage rectifiers, but also avoids the occurrence of voltage breakdown caused by excessive concentration of the electric field, ensuring the normal operation of the electron accelerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a rectifier assembly for an electron accelerator of the utility model;

[0013] Figure 2 yes Figure 1 A top view schematic diagram of

[0014] Figure 3 yes Figure 1 A schematic diagram of a partial cross-sectional view from the left side;

[0015] Figure 4 yes Figure 3 An enlarged schematic diagram of . DETAILED DESCRIPTION

[0016] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the rectifier assembly for electron accelerator of the utility model comprises a base 8, and insulating strips 2 are arranged on a pair of sides of the base 8. The two insulating strips 2 are arranged vertically, and their lower ends are fixed to a pair of sides of the base 8 by means of screws. The rectifier assembly for electron accelerator of this embodiment is a 50,000-volt rectifier assembly for electron accelerator, and six rectifier units are arranged vertically between the two insulating strips 2. The number of rectifier units can be determined according to the level of the rectifier voltage.

[0017] The rectifier unit comprises an aluminum sleeve 4 with a regular octagonal cross section, and screw holes and through holes are processed on the aluminum sleeve 4 and the corresponding insulating strips 2, respectively, and the two are connected together by a third screw 5 and the screw holes and through holes. The upper and lower ends of the aluminum sleeve 4 are provided with equalizing rings 3. The inner diameter of the equalizing ring 3 is adapted to the distance between the transverse centers of the outer sides of the two insulating strips 2, and they are all sleeved outside the insulating strips 2. An inner convex ring 31 is welded on the equalizing ring 3 between the same sides of the insulating strips 2, and the two inner convex rings 31 are respectively connected to the upper and lower ends of the aluminum sleeve 4 by means of a first screw 1. Among them, an insulating plate 10 is arranged between the two inner convex rings 31 on the equalizing ring 3 at the lower end of the aluminum sleeve 4, and a pair of sides of the insulating plate 10 are processed with straight edges 101 that match the two insulating strips 2, and the other pair of sides are arc edges and are respectively connected to the corresponding inner convex rings 31 on the inner sides of the two equalizing rings 3 at the lower end of the aluminum sleeve 4 by means of a first screw 1. Four tube sheets 7 are arranged in the aluminum sleeve 4. Eight axial convex ribs 41 are evenly distributed on the inner side of the aluminum sleeve 4. The eight axial convex ribs 41 are respectively located on the inner side of the eight corners of the aluminum sleeve 4. Four bayonet holes are processed in their axial direction. There is a spacing between the four bayonet holes, and the four bayonet holes on the eight axial convex ribs correspond to each other. The edges of the four tube sheets 7 are respectively inserted into the corresponding bayonet holes on the eight axial convex ribs. The tube sheet 7 is a printed circuit board, and ten diodes 9 are welded on it. The ten diodes 9 are connected in series. Between adjacent rectifier units: the positive pole of the output end of one rectifier unit is connected in series with the negative pole of the output end of another rectifier unit.

[0018] The four tube sheets 7 and the lower tube sheet 7 and the insulating plate 10 in the same aluminum sleeve 4 are connected together by means of second screws 11 and nuts. Insulating sleeves 12 are provided on the second screws 11 between the upper tube sheet 7 and the lower tube sheet 7 and on the second screws 11 between the lowermost tube sheet 7 and the insulating plate 10.

[0019] In order to improve the heat dissipation effect of the diodes on the tube plate 7, heat dissipation holes 6 are processed on the corresponding surfaces of the six sides of the aluminum sleeve 4 that are not connected to the insulating strip 2.

[0020] Among them, the upper and lower ends of the two corners of the aluminum sleeve 4 that are not adjacent to the insulating strip 2 are processed with axial holes, and the two inner convex rings 31 corresponding to the axial holes are processed with two axial holes, and the first screw 1 is connected between the axial hole and the corresponding axial hole on the same corner. In this way, on the one hand, the connection problem between the two ends of the aluminum sleeve 4 and the corresponding inner convex ring 31 is solved. On the other hand, the upper and lower ends of the first screw 1 are respectively extended above the inner convex ring 31 and below the insulating plate 10, so that a discharge gap is left between the opposite extended ends of the first screw 1, and the occurrence of voltage breakdown is solved.

Claims

1. A rectifier assembly for an electron accelerator, comprising a diode, characterized in that: It also includes a base (8), wherein a pair of sides of the base (8) are provided with insulating strips (2), the two insulating strips (2) are arranged vertically, and there are at least two rectifier units between them in the vertical direction; the rectifier unit contains an aluminum sleeve (4) with a regular octagonal cross-section, a pair of opposite sides of the aluminum sleeve (4) are respectively connected to the corresponding insulating strips (2), and the upper and lower ends thereof are provided with equalizing rings (3); the inner diameter of the equalizing ring (3) is adapted to the distance between the lateral centers of the outer side surfaces of the two insulating strips (2), and they are both sleeved outside the insulating strips (2); the equalizing ring (3) between the same sides of the insulating strips (2) is provided with an inner convex ring (31), and the two inner convex rings (31) are respectively connected to the upper and lower ends of the aluminum sleeve (4). An insulating plate (10) is connected between two inner convex rings (31) on the equalizing ring (3) at the lower end of the aluminum sleeve (4), and a pair of sides of the insulating plate (10) are provided with straight edges (101) that cooperate with the two insulating plate strips (2); a tube sheet (7) is provided inside the aluminum sleeve (4), and axial convex ribs (41) are uniformly distributed on the inner side surface of the aluminum sleeve (4) in the circumferential direction, and the axial convex ribs (41) are provided with snap-fits at the same axial position, and the edge of the tube sheet (7) is snapped into the corresponding snap-fits; at least two diodes (9) are provided on the tube sheet (7), and the diodes (9) on the same tube sheet (7) are connected in series; between adjacent rectifier units: the positive pole of the output end of one rectifier unit is connected in series with the negative pole of the output end of another rectifier unit.

2. The electron accelerator rectifier assembly according to claim 1, characterized in that: At least two of the bayonet holes are evenly distributed in the axial direction of the axial convex rib; at least two tube sheets (7) are arranged in the aluminum sleeve (4), and the edges of the two tube sheets (7) are respectively inserted into corresponding bayonet holes at the same height.

3. The rectifier assembly for an electron accelerator according to claim 2, characterized in that: The tube sheets (7) in the same aluminum sleeve (4) and the lower tube sheet (7) and the insulating plate (10) are all connected together in an insulated manner.

4. The rectifier assembly for an electron accelerator according to claim 3, characterized in that: The tube sheets (7) and the lower tube sheet (7) and the insulating plate (10) in the same aluminum sleeve (4) are connected together by means of screws and nuts; wherein the screws between the upper tube sheet (7) and the lower tube sheet (7) and the screws between the lower tube sheet (7) and the insulating plate (10) are both provided with insulating sleeves.

5. The electron accelerator rectifier assembly according to any one of claims 1 to 4, characterized in that: The corresponding surfaces of the six sides of the aluminum sleeve (4) not connected to the insulating strip (2) are all provided with heat dissipation holes (6).

6. The electron accelerator rectifier assembly according to any one of claims 1 to 4, characterized in that: The aluminum sleeve (4) has axial holes at the upper and lower ends of two corners not adjacent to the insulating strip (2), and two inner convex rings (31) corresponding to the axial holes have two axial holes, and screws (1) are connected between the axial holes and the corresponding axial holes at the same corner; the upper and lower ends of the screws (1) extend above the inner convex ring (31) and below the insulating plate (10), respectively, and a discharge gap is provided between the two opposite extended ends of the first screws (1).

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