X-ray high-voltage generator

Abstract

The invention relates to the technical field of X-ray sources, and discloses an X-ray high-voltage generator which comprises a high-voltage generator assembly, a high-voltage generator grounding shell and a ray tube assembly. The high-voltage generator assembly is arranged in the high-voltage generator grounding shell and is encapsulated by epoxy resin; and the ray tube assembly is electrically connected with the high-voltage generator assembly. The high-voltage generator assembly is arranged in the high-voltage generator grounding shell and is encapsulated by the epoxy resin, the insulation problem of the high-voltage generator assembly can be solved by encapsulating the epoxy resin, the high-voltage generator assembly is arranged in the high-voltage generator grounding shell, and the high-voltage generator grounding shell is used as a pouring container. The X-ray high-voltage generator can reduce cost and space, and further can reduce the overall size of the X-ray high-voltage generator.

Description

Technical Field

[0001] The invention relates to the technical field of X-ray sources, and in particular to an X-ray high voltage generator. Background Art

[0002] X-ray source generators are generally composed of high-frequency transformers, voltage doubling circuits, filament transformers, X-ray tubes, and insulating oil. In order to solve the discharge problem caused by the potential difference and insufficient space between the transformer, voltage doubling circuit components and the charged parts and the ground, insulating oil is often introduced as an insulating medium. However, the dielectric strength of insulating oil is low, so a large insulation distance needs to be reserved to ensure the normal operation of each charged part. At the same time, the equipment will generate a lot of heat during operation, causing the insulating oil to expand, so sufficient expansion space also needs to be reserved, otherwise it will cause excessive pressure in the box and cause oil leakage.

[0003] Moreover, X-rays are very harmful to living organisms and need to be confined within a certain window. Therefore, except for the X-ray outlet, lead sheets are pasted to other places as radiation protection. In this way, conductors are introduced into the insulating oil tank, which not only increases the insulation problem of the X-ray tube but also increases the volume of the X-ray tube.

[0004] Therefore, due to the above reasons, the internal overall structure of the existing X-ray source generator occupies a large space, resulting in a large volume of the X-ray source generator. Summary of the invention

[0005] In view of this, the present invention provides an X-ray high voltage generator to solve the problem of large volume of existing X-ray source generators.

[0006] In a first aspect, the present invention provides an X-ray high voltage generator, comprising:

[0007] High voltage generator components;

[0008] A high voltage generator grounding shell, wherein the high voltage generator assembly is arranged inside the high voltage generator grounding shell and is potted with epoxy resin;

[0009] The ray tube assembly is electrically connected to the high voltage generator assembly.

[0010] By arranging the high-voltage generator assembly inside the high-voltage generator grounding shell and encapsulating it with epoxy resin, the use of epoxy resin for encapsulation can solve the insulation problem of the high-voltage generator assembly, and by arranging the high-voltage generator assembly inside the high-voltage generator grounding shell and using the high-voltage generator grounding shell as a casting container, the cost and space can be reduced, thereby reducing the overall volume of the X-ray high-voltage generator.

[0011] In an optional implementation, the ray tube assembly is arranged outside the high voltage generator grounding shell, and the ray tube grounding shell in the ray tube assembly and the high voltage generator grounding shell are fastened with bolts to be connected to the same potential.

[0012] By arranging the ray tube assembly outside the high-voltage generator grounding shell, the space inside the high-voltage generator grounding shell can be saved, so as to reduce the overall volume of the high-voltage generator grounding shell. Since the ray tube assembly and the high-voltage generator grounding shell are arranged separately, the ray tube assembly and the high-voltage generator grounding shell can be easily disassembled. During installation, the ray tube grounding shell in the ray tube assembly and the high-voltage generator grounding shell are fastened with bolts to have an equipotential connection. This design can reduce the overall volume of the X-ray high-voltage generator and facilitate transportation.

[0013] In an optional implementation, several components in the high-voltage generator assembly are arranged in a "mouth" shape inside the high-voltage generator grounding shell.

[0014] In an optional implementation, a number of the components are in contact with the side wall of the ground shell of the high voltage generator to ensure insulation performance.

[0015] In an optional embodiment, the high voltage generator assembly includes a high frequency transformer, a cathode voltage doubler assembly, a filament transformer and an anode voltage doubler assembly;

[0016] The cathode voltage doubling assembly and the anode voltage doubling assembly both include a PCB board, a plurality of voltage doubling capacitors and a plurality of high-voltage diodes, and the plurality of voltage doubling capacitors and the plurality of high-voltage diodes are alternately welded on the front and back sides of the PCB board to form a multi-voltage circuit;

[0017] Among them, the voltage multiplier capacitor is a chip capacitor, the high-voltage diode is a chip diode, and the multi-voltage circuit is arranged vertically.

[0018] By setting voltage doubling capacitors and high-voltage diodes, using smaller chip capacitors and chip diodes, staggered soldering on the front and back sides of the PCB board to form a multi-voltage circuit, and then arranging them vertically, the space utilization of the voltage doubling components can be effectively improved, thereby reducing the volume.

[0019] In an optional implementation, two first wiring holes are provided on the high-voltage generator grounding shell, and the two first wiring holes are provided in the middle area of ​​several components in the high-voltage generator assembly.

[0020] In an optional embodiment, the ray tube assembly includes a ray tube and a ray tube grounding shell, the ray tube is arranged in the ray tube grounding shell and is electrically connected to the high-voltage generator assembly, and the ray tube grounding shell and the high-voltage generator grounding shell are fastened with bolts to be connected at the same potential.

[0021] In an optional implementation, the grounding shell of the ray tube is made of tungsten alloy.

[0022] In an optional implementation, two second wiring holes are provided on the grounding shell of the ray tube, and the two second wiring holes are suitable for being aligned and connected with the two first wiring holes respectively.

[0023] In an optional embodiment, the X-ray high-voltage generator also includes a glue injection tooling, which is provided with a through hole. The glue injection tooling is suitable for connecting to the inside of the high-voltage generator grounding shell. The through hole on the glue injection tooling is aligned with the first wiring hole, and the glue injection tooling protrudes from the bottom surface of the high-voltage generator grounding shell to ensure that the insulator extends into the high-voltage generator grounding shell after casting.

[0024] The X-ray high voltage generator provided by the present invention has the following advantages:

[0025] 1. The present invention provides an X-ray high voltage generator, comprising a high voltage generator assembly, a high voltage generator grounding shell and a ray tube assembly. The high voltage generator assembly is arranged inside the high voltage generator grounding shell and is potted with epoxy resin; the ray tube assembly is electrically connected to the high voltage generator assembly.

[0026] The X-ray high-voltage generator of this structure arranges the high-voltage generator assembly inside the high-voltage generator grounding shell and uses epoxy resin for potting. The use of epoxy resin for potting can solve the insulation problem of the high-voltage generator assembly. The high-voltage generator assembly is arranged in the high-voltage generator grounding shell and the high-voltage generator grounding shell is used as a casting container, which can reduce costs and space, thereby reducing the overall volume of the X-ray high-voltage generator.

[0027] 2. The present invention provides an X-ray high voltage generator, wherein the ray tube assembly is arranged outside the ground shell of the high voltage generator and connected to the ground shell of the high voltage generator.

[0028] The X-ray high-voltage generator of this structure can save space inside the high-voltage generator grounding shell by arranging the ray tube assembly outside the high-voltage generator grounding shell, so as to reduce the overall volume of the high-voltage generator grounding shell. Since the ray tube assembly and the high-voltage generator grounding shell are arranged separately, the ray tube assembly and the high-voltage generator grounding shell can be easily disassembled. During installation, the ray tube grounding shell in the ray tube assembly and the high-voltage generator grounding shell are connected by two grounding shell bolts. This design can reduce the overall volume of the X-ray high-voltage generator and facilitate transportation.

[0029] 3. The present invention provides an X-ray high-voltage generator, wherein the cathode voltage doubling component and the anode voltage doubling component both include a PCB board, a plurality of voltage doubling capacitors and a plurality of high-voltage diodes, wherein the plurality of voltage doubling capacitors and a plurality of high-voltage diodes are alternately welded on the front and back sides of the PCB board to form a multi-voltage circuit; wherein the voltage doubling capacitors are surface-mount capacitors, the high-voltage diodes are surface-mount diodes, and the multi-voltage circuit is arranged vertically.

[0030] The X-ray high-voltage generator of this structure adopts smaller chip capacitors and chip diodes by setting voltage-doubling capacitors and high-voltage diodes, which are staggeredly soldered on the front and back sides of the PCB board to form a multi-voltage circuit, and then arranged vertically, which can effectively improve the space utilization of the voltage-doubling components and thus reduce the volume.

[0031] 4. The present invention provides an X-ray high-voltage generator, in which the ray tube is arranged outside the grounding shell of the high-voltage generator, and the silicone protrusion of the high-voltage wire part protrudes and extends into the grounding shell of the high-voltage generator, thereby improving the insulation performance of the high-voltage wire and avoiding the problem of the structure requiring a high-voltage socket conversion when inserted. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic structural view of an X-ray high voltage generator provided in an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of the internal structure of an X-ray high voltage generator provided in an embodiment of the present invention;

[0035] Figure 3 A schematic structural view of a high voltage generator assembly in an X-ray high voltage generator provided in an embodiment of the present invention;

[0036] Figure 4 A schematic structural view of a ray tube assembly in an X-ray high voltage generator provided in an embodiment of the present invention;

[0037] Figure 5 A schematic structural view of a grounding shell of a high voltage generator in an X-ray high voltage generator provided in an embodiment of the present invention;

[0038] Figure 6 It is a schematic structural view of the glue injection tooling in the X-ray high voltage generator provided in an embodiment of the present invention after glue injection.

[0039] Description of reference numerals:

[0040] 1-high voltage generator assembly; 11-high frequency transformer; 12-cathode voltage doubler assembly; 13-filament transformer; 14-anode voltage doubler assembly;

[0041] 2-high voltage generator grounding shell; 21-first wiring hole;

[0042] 31-ray tube; 32-ground shell of ray tube; 33-ray outlet;

[0043] 4-Glue injection tooling;

[0044] 5- screws;

[0045] 6-Silicone protrusions;

[0046] 7- High voltage wires. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0049] Example

[0050] This embodiment provides an X-ray high voltage generator, including a high voltage generator assembly 1, a high voltage generator grounding shell 2 and a ray tube assembly.

[0051] In this embodiment, if Figure 1 and Figure 2 As shown, the high voltage generator assembly 1 is arranged inside the high voltage generator grounding shell 2 and is potted with epoxy resin; the ray tube assembly is electrically connected to the high voltage generator assembly 1.

[0052] At present, in order to solve the discharge problem caused by the potential difference and insufficient space distance between charged bodies such as transformers and voltage-doubling circuit components and the ground, insulating oil is often introduced as the insulating medium. However, the dielectric strength of insulating oil is relatively low. In order to ensure the normal operation of each charged body, a larger insulation distance needs to be reserved. At the same time, the equipment will generate a lot of heat during operation, causing the insulating oil to expand. Therefore, sufficient expansion space needs to be reserved. Otherwise, the pressure in the box will be too high and oil leakage will occur.

[0053] In this embodiment, the high-voltage generator assembly 1 is arranged inside the high-voltage generator grounding shell 2 and is potted with epoxy resin. The use of epoxy resin for potting can solve the insulation problem of the high-voltage generator assembly 1, and the high-voltage generator assembly 1 is arranged inside the high-voltage generator grounding shell 2, and the high-voltage generator grounding shell 2 is used as a casting container, which can reduce costs and reduce space, thereby reducing the overall volume of the X-ray high-voltage generator. When in use, the high-voltage generator assembly 1 is electrically connected to the ray tube assembly, thereby controlling the ray tube assembly to generate X-rays. This is a prior art, so its principle is not repeated here.

[0054] In this embodiment, if Figure 1 and Figure 2 As shown, the ray tube assembly is arranged outside the high voltage generator grounding shell 2, and the ray tube grounding shell in the ray tube assembly is connected with the high voltage generator grounding shell 2 by two grounding shell bolts.

[0055] By arranging the ray tube assembly outside the high-voltage generator grounding shell 2, the space inside the high-voltage generator grounding shell 2 can be saved, so as to reduce the overall volume of the high-voltage generator grounding shell 2. Since the ray tube assembly and the high-voltage generator grounding shell 2 are arranged separately, the ray tube assembly and the high-voltage generator grounding shell 2 can be easily disassembled. During installation, the ray tube grounding shell in the ray tube assembly and the high-voltage generator grounding shell 2 are connected by two grounding shell bolts. This design can reduce the overall volume of the X-ray high-voltage generator and facilitate transportation.

[0056] In this embodiment, if Figure 3 As shown, the high-voltage generator assembly 1 includes a high-frequency transformer 11, a cathode voltage doubler assembly 12, a filament transformer 13 and an anode voltage doubler assembly 14; the high-frequency transformer 11, the cathode voltage doubler assembly 12, the filament transformer 13 and the anode voltage doubler assembly 14 are arranged in a "mouth" shape in the high-voltage generator ground shell 2, and the high-frequency transformer 11, the cathode voltage doubler assembly 12, the filament transformer 13 and the anode voltage doubler assembly 14 are abutted against the side wall of the high-voltage generator ground shell 2, and the insulation performance between the high-frequency transformer 11, the cathode voltage doubler assembly 12, the filament transformer 13 and the anode voltage doubler assembly 14 and the side wall of the high-voltage generator ground shell 2 must be ensured.

[0057] By arranging the high-frequency transformer 11, the cathode voltage doubler assembly 12, the filament transformer 13 and the anode voltage doubler assembly 14 in a "mouth" shape within the ground shell 2 of the high-voltage generator, a cavity can be formed among the high-frequency transformer 11, the cathode voltage doubler assembly 12, the filament transformer 13 and the anode voltage doubler assembly 14, which is beneficial to the heat dissipation of the high-frequency transformer 11, the cathode voltage doubler assembly 12, the filament transformer 13 and the anode voltage doubler assembly 14.

[0058] Furthermore, by arranging the high-frequency transformer 11 , the cathode voltage doubler assembly 12 , the filament transformer 13 and the anode voltage doubler assembly 14 to abut against the side wall of the high-voltage generator ground shell 2 , the overall heat dissipation performance of the high-voltage generator assembly 1 can be improved.

[0059] In this embodiment, the cathode voltage doubling component 12 and the anode voltage doubling component 14 both include a PCB board, a plurality of voltage doubling capacitors and a plurality of high-voltage diodes. The plurality of voltage doubling capacitors and the plurality of high-voltage diodes are alternately welded on the front and back sides of the PCB board to form a multi-voltage circuit; wherein the voltage doubling capacitors are surface-mount capacitors, the high-voltage diodes are surface-mount diodes, and the multi-voltage circuit is arranged vertically.

[0060] By setting voltage doubling capacitors and high-voltage diodes, using smaller chip capacitors and chip diodes, staggered welding on the front and back sides of the PCB board to form a multi-voltage circuit, and then arranging them vertically, the space utilization rate of the voltage doubling components can be effectively improved, thereby reducing the volume. Among them, the principle of the PCB board, several voltage doubling capacitors and several high-voltage diodes forming a multi-voltage circuit is an existing circuit technology.

[0061] In this embodiment, if Figure 3 As shown, two first wiring holes 21 are provided on the high voltage generator grounding shell 2 , and the two first wiring holes 21 are provided in the middle area of ​​several components in the high voltage generator assembly 1 .

[0062] By providing two first wiring holes 21 on the high voltage generator grounding shell 2 , the ray tube assembly can be electrically connected to the high voltage generator assembly 1 through the two first wiring holes 21 .

[0063] In this embodiment, if Figure 2 As shown, the ray tube assembly includes a ray tube 31 and a ray tube grounding shell 32. The ray tube 31 is arranged in the ray tube grounding shell 32 and is electrically connected to the high voltage generator assembly 1. The ray tube grounding shell 32 is connected to the high voltage generator grounding shell 2 by two grounding shell bolts. The ray tube grounding shell 32 is made of tungsten alloy.

[0064] like Figure 4As shown, the X-ray tube 31 is placed in a cylindrical X-ray tube grounding shell 32 made of tungsten alloy. Tungsten alloy is used to replace lead as a shield for X-rays. The volume is reduced by about 1 / 3 compared with lead under the same shielding effect. A ray outlet 33 is reserved on the top cover of one side of the X-ray tube grounding shell 32 to facilitate the emission of X-rays; a mounting boss is reserved on the X-ray tube grounding shell 32 to connect with the high-voltage generator grounding shell 2.

[0065] In this embodiment, if Figure 4 As shown, two second wiring holes are provided on the grounding shell 32 of the ray tube, and the two second wiring holes are suitable for being aligned and connected with the two first wiring holes 21 respectively.

[0066] In this embodiment, if Figure 5 and Figure 6 As shown, the X-ray high-voltage generator also includes a glue injection tool 4, which is provided with a through hole. The glue injection tool 4 is suitable for connecting with the inside of the high-voltage generator grounding shell 2. The through hole on the glue injection tool 4 is aligned with the first wiring hole 21, and the glue injection tool 4 protrudes from the bottom surface of the high-voltage generator grounding shell 2.

[0067] After the ray tube 31 and the ray tube grounding shell 32 are assembled, they are connected to the high-voltage generator grounding shell 2 and the glue injection tool 4 is installed through the screws 5. The glue injection tool 4 is about 1 cm higher than the inner bottom wall of the high-voltage generator grounding shell 2. The high-voltage wire 7 connected to the ray tube 31 is placed between the first wiring hole 21 and the second wiring hole as much as possible, and then vacuum casting is performed with insulating thermal conductive silicone. After the glue is cured, the glue injection tool 4 is removed, and the surface of the protruding silicone protrusion 6 is polished. The silicone protrusion 6 can be used as the insulation of the high-voltage wire 7 to the high-voltage generator grounding shell 2. Then the internal components of the high-voltage generator grounding shell 2 are installed and the high-voltage wire 7 is connected, and the epoxy resin is vacuum cast. After the glue is cured, the high-voltage generator grounding shell cover is installed.

[0068] In this embodiment, the ray tube 31 is arranged on the outside of the high-voltage generator grounding shell 2, and the silicone protrusion 6 of the high-voltage wire 7 protrudes and extends into the high-voltage generator grounding shell 2, thereby improving the insulation performance of the high-voltage wire 7 and avoiding the problem of requiring a high-voltage socket adapter when inserting the structure.

[0069] In the X-ray high-voltage generator provided in the present embodiment, before injecting insulating thermally conductive silicone into the X-ray tube grounding shell 32, align the second wiring hole on the X-ray tube grounding shell 32 with the first wiring hole 21 on the high-voltage generator grounding shell 2, place the glue injection tool 4 inside the first wiring hole 21 and fix it to the high-voltage generator grounding shell 2 by means of screws 5, the glue injection tool 4 is about 1 cm higher than the bottom wall inside the high-voltage generator grounding shell 2, and then inject the insulating thermally conductive silicone into the X-ray tube grounding shell 32 by means of the glue injection tool 4 until the insulating thermally conductive silicone is higher than the bottom wall inside the high-voltage generator grounding shell 2, after the insulating thermally conductive silicone is solidified, remove the glue injection tool 4, fix the high-voltage generator grounding shell 2 to the X-ray tube grounding shell 32 by means of two grounding shell bolts, and then inject epoxy resin into the high-voltage generator grounding shell 2.

[0070] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An X-ray high voltage generator, characterized in that: include: High voltage generator assembly (1); A high-voltage generator grounding shell (2), wherein the high-voltage generator assembly (1) is arranged inside the high-voltage generator grounding shell (2) and is potted with epoxy resin; The ray tube assembly is electrically connected to the high voltage generator assembly (1).

2. The X-ray high voltage generator according to claim 1, characterized in that: The ray tube assembly is arranged outside the high-voltage generator grounding shell (2) and is connected to the high-voltage generator grounding shell (2).

3. The X-ray high voltage generator according to claim 1, characterized in that: Several components in the high-voltage generator assembly (1) are arranged in a "mouth" shape inside the high-voltage generator grounding shell (2).

4. The X-ray high voltage generator according to claim 3, characterized in that: A plurality of the components are in contact with the side wall of the high voltage generator grounding shell (2) to ensure insulation performance.

5. The X-ray high voltage generator according to claim 3 or 4, characterized in that: The high-voltage generator assembly (1) comprises a high-frequency transformer (11), a cathode voltage multiplier assembly (12), a filament transformer (13) and an anode voltage multiplier assembly (14); The cathode voltage doubling component (12) and the anode voltage doubling component (14) both comprise a PCB board, a plurality of voltage doubling capacitors and a plurality of high-voltage diodes, wherein the plurality of voltage doubling capacitors and the plurality of high-voltage diodes are alternately welded on the front and back sides of the PCB board to form a multi-voltage circuit; Among them, the voltage multiplier capacitor is a chip capacitor, the high-voltage diode is a chip diode, and the multi-voltage circuit is arranged vertically.

6. The X-ray high voltage generator according to claim 3 or 4, characterized in that: The high-voltage generator grounding shell (2) is provided with two first wiring holes (21), and the two first wiring holes (21) are arranged in the middle area of ​​several components in the high-voltage generator assembly (1).

7. The X-ray high voltage generator according to claim 6, characterized in that: The ray tube assembly comprises a ray tube (31) and a ray tube grounding shell (32); the ray tube (31) is arranged in the ray tube grounding shell (32) and is electrically connected to a high-voltage generator assembly (1); the ray tube grounding shell (32) and the high-voltage generator grounding shell (2) are connected by two grounding shell bolts.

8. The X-ray high voltage generator according to claim 7, characterized in that: The ray tube grounding shell (32) is made of tungsten alloy.

9. The X-ray high voltage generator according to claim 7, characterized in that: The ray tube grounding shell (32) is provided with two second wiring holes, and the two second wiring holes are suitable for being aligned and connected with the two first wiring holes (21) respectively.

10. The X-ray high voltage generator according to claim 9, characterized in that: It also includes a glue injection tool (4), the glue injection tool (4) is provided with a through hole, the glue injection tool (4) is suitable for connecting with the inside of the high-voltage generator grounding shell (2), the through hole on the glue injection tool (4) is aligned with the first wiring hole (21), and the glue injection tool (4) protrudes from the bottom surface of the high-voltage generator grounding shell (2).

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