Ray source device for X-ray machine

Abstract

The radiation source device for the X-ray machine comprises a square sealing cylinder, an X-ray tube core, a boosting transformer and an end face sealing cover, a base plate is arranged on the bottom side of an inner cavity of the square sealing cylinder, and a PCB is installed on the base plate beside the X-ray tube core; a KV sampling resistor and a filament transformer are respectively connected to the PCB on two sides of the boosting transformer, and an MA sampling resistor mounted on the PCB is arranged beside the filament transformer; a positive voltage-multiplying rectifying assembly and a negative voltage-multiplying rectifying assembly which are distributed in parallel are mounted on the PCB between the boosting transformer and the X-ray tube core; devices mounted on the base plate and the PCB are integrally packaged in the square sealing cylinder and sealed by the end face sealing cover, so that the boosting transformer and the X-ray tube are integrally integrated in a closed cavity, filling and sealing are facilitated, high frequency, small size and high power are met, and the requirement for miniaturization is met while the overall pressure resistance is guaranteed.

Description

[Technical Field]

[0001] This utility model relates to medical detection and X-ray metrology technology, and in particular to a radiation source device for an X-ray machine. [Background Technology]

[0002] Most existing wall-mounted intraoral imaging dental X-ray machines include a controller, a step-up transformer, a high-voltage cable, and an X-ray tube. When the generator is connected to the power supply, the controller sets the high voltage required to generate X-rays and the heating current required for the cathode of the X-ray tube to emit thermionic electrons. Under the control of the controller, the step-up transformer generates a DC high voltage, which is applied to the cathode and anode of the X-ray tube through the high-voltage cable, thereby generating X-rays.

[0003] However, the existing dental X-ray machine's X-ray source devices are low-power, large-sized, and low-frequency. As a result, the miniaturization trend of intraoral imaging dental X-ray machines has been hindered, and the size and weight cannot be further reduced. [Utility Model Content]

[0004] This invention provides a radiation source device for an X-ray machine. Through overall layout optimization, a step-up transformer and an X-ray tube are integrated into a closed cavity, which facilitates filling and sealing, meets the requirements of high frequency, small size and high power, ensures overall pressure resistance, and effectively meets the miniaturization requirements.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An X-ray source device for an X-ray machine includes a square sealing cylinder, an X-ray tube core, a step-up transformer, and an end cap, wherein the end cap is installed to seal the open side of the square sealing cylinder.

[0007] A base plate is provided on the bottom side of the inner cavity of the square sealing cylinder. The inner end of the base plate is provided with a positioning and mounting hole to make way for the X-ray tube core, facilitate the positioning and fixing of the X-ray tube core, and reduce the height space.

[0008] A PCB circuit board with four corners suspended and fixed is also installed on the base plate next to the X-ray tube core.

[0009] Both the base plate and the PCB circuit board have a clearance groove on their outer ends adjacent to the end face cover, which facilitates the circumferential outer edge of the step-up transformer to be fixedly installed on the PCB circuit board after it is sunk, and reduces the space restriction in the height direction of the step-up transformer.

[0010] A KV sampling resistor and a filament transformer are respectively connected to the PCB circuit boards on both sides of the step-up transformer, and an MA sampling resistor is installed on the PCB circuit board next to the filament transformer.

[0011] Two parallel positive voltage doubler rectifier components and a negative voltage doubler rectifier component are also installed on the PCB circuit board between the step-up transformer and the X-ray tube core;

[0012] The X-ray tube, step-up transformer, KV sampling resistor, filament transformer, MA sampling resistor, positive voltage doubler rectifier assembly, and negative voltage doubler rectifier assembly mounted on the base plate and the PCB circuit board are integrally encapsulated in the square sealing cylinder and sealed by the end face cap.

[0013] Preferably, a power interface and a communication terminal are respectively provided on both sides of the end face cover along the width direction.

[0014] Preferably, two L-shaped insulating plates, which are symmetrically distributed in an L-shape and inserted into the PCB circuit board for high insulation isolation between the positive voltage doubler rectifier assembly, the negative voltage doubler rectifier assembly, and the X-ray tube die, are respectively provided.

[0015] Preferably, a T-shaped insulating plate for high insulation isolation between the KV sampling resistor and the step-up transformer is also inserted.

[0016] Preferably, the base plate is also provided with a plurality of elongated grid holes for heat dissipation of the PCB circuit board.

[0017] The beneficial effects of this utility model are:

[0018] During assembly, the components mounted on the base plate and PCB circuit board are encapsulated in the inner cavity of a square sealing cylinder and sealed by the end cap, realizing the integration of the step-up transformer and the X-ray tube into a closed cavity, which facilitates filling and sealing, and meets the requirements of high frequency, small size and high power. While ensuring the overall pressure resistance performance, it effectively meets the miniaturization requirements of the product. [Attached Image Description]

[0019] Figure 1 This is a schematic diagram of the exploded structure from the left side of this utility model;

[0020] Figure 2 This is a right-view exploded view schematic diagram of the present invention;

[0021] Figure 3 This is a magnified front view of the main structure of the internal components of the square sealing cylinder in this utility model;

[0022] Figure 4 This is a top-view enlarged view of the main structure of the internal components of the square sealing cylinder in this utility model.

Detailed Implementation Methods

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] 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.

[0025] A radiation source device for an X-ray machine, such as Figures 1 to 4 As shown, the device includes a square sealing cylinder 1, an X-ray tube core 2, a step-up transformer 3, and an end cap 4. The end cap 4 is installed on the side opening of the square sealing cylinder 1 by multiple circumferential screws. A power interface 40 and a communication terminal 41 are respectively provided on both sides of the end cap 4 along its width direction. A base plate 5 is provided on the bottom side of the inner cavity of the square sealing cylinder 1. The inner end of the base plate 5 has positioning and mounting holes 50 to allow space for the X-ray tube core 2, facilitate the positioning and fixing of the X-ray tube core 2, and reduce the height space. A PCB circuit board 6 with four corners suspended and fixed is also installed on the base plate 5 next to the X-ray tube core 2. The outer ends of the base plate 5 and the PCB circuit board 6 adjacent to the end cap 4 both have circumferential outer edge fixing installation on the PCB circuit board after the step-up transformer 3 is recessed. The circuit board 6 has a clearance slot 7 that reduces the space restriction in the height direction of the step-up transformer 3; KV sampling resistors 8 and filament transformers 9 are respectively connected to the PCB circuit boards 6 on both sides of the step-up transformer 3, and MA sampling resistors 10 are installed on the side of the filament transformer 9 on the PCB circuit board 6; two parallel positive voltage doubler rectifier components 11 and negative voltage doubler rectifier components 12 are also installed on the PCB circuit board 6 between the step-up transformer 3 and the X-ray tube 2; the X-ray tube 2, step-up transformer 3, KV sampling resistors 8, filament transformers 9, MA sampling resistors 10, positive voltage doubler rectifier components 11 and negative voltage doubler rectifier components 12 installed on the base plate 5 and the PCB circuit board 6 are integrally encapsulated in a square sealing cylinder 1 and sealed by the end face cap 4.

[0026] Continue as Figures 1 to 4As shown, two L-shaped insulating plates 13, which are symmetrically distributed in an L-shape and inserted into the PCB circuit board 6 for high insulation isolation between the positive voltage doubler rectifier assembly 11, the negative voltage doubler rectifier assembly 12, and the X-ray tube core 2, are respectively provided. A T-shaped insulating plate 14 for high insulation isolation between the KV sampling resistor 8 and the step-up transformer 3 is also inserted. The base plate 5 is also provided with multiple elongated grid holes 15 for heat dissipation of the PCB circuit board 6.

[0027] In this embodiment, the step-up transformer 3 is connected to the positive terminal of the X-ray tube core via the positive voltage doubler rectifier assembly 11, and the step-up transformer 3 is connected to the negative terminal of the X-ray tube core and the secondary side of the filament transformer 9 via the negative voltage doubler rectifier assembly 12. A KV sampling resistor 8 and an MA sampling resistor 10 are connected in parallel between the anode, cathode and neutral terminal of the X-ray tube, respectively, to achieve sampling of the high voltage actually applied to the X-ray tube core 2, and the signal is used to achieve voltage negative feedback to achieve precise control of the high voltage.

[0028] The entire X-ray source device integrates a step-up transformer and an X-ray tube into the inner cavity of a square sealed cylinder, which facilitates filling and sealing, effectively ensures the overall pressure resistance, and achieves high frequency, small size and high power of the entire device, effectively meeting the miniaturization requirements of the product.

[0029] The above-described embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. All equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A radiation source device for an X-ray machine, characterized in that, It includes a square sealing cylinder, an X-ray tube core, a step-up transformer, and an end face cover, wherein the end face cover is installed to seal the open side of the square sealing cylinder; A base plate is provided on the bottom side of the inner cavity of the square sealing cylinder. The inner end of the base plate is provided with a positioning and mounting hole to make way for the X-ray tube core, facilitate the positioning and fixing of the X-ray tube core, and reduce the height space. A PCB circuit board with four corners suspended and fixed is also installed on the base plate next to the X-ray tube core. Both the base plate and the PCB circuit board have a clearance groove on their outer ends adjacent to the end face cover, which facilitates the circumferential outer edge of the step-up transformer to be fixedly installed on the PCB circuit board after it is sunk, and reduces the space restriction in the height direction of the step-up transformer. A KV sampling resistor and a filament transformer are respectively connected to the PCB circuit boards on both sides of the step-up transformer, and an MA sampling resistor is installed on the PCB circuit board next to the filament transformer. Two parallel positive voltage doubler rectifier components and a negative voltage doubler rectifier component are also installed on the PCB circuit board between the step-up transformer and the X-ray tube core; The X-ray tube, step-up transformer, KV sampling resistor, filament transformer, MA sampling resistor, positive voltage doubler rectifier assembly, and negative voltage doubler rectifier assembly mounted on the base plate and the PCB circuit board are integrally encapsulated in the square sealing cylinder and sealed by the end face cap.

2. The radiation source device for an X-ray machine according to claim 1, characterized in that: The end cover is provided with a power interface and a communication terminal on both sides along the width direction.

3. The radiation source device for an X-ray machine according to claim 1, characterized in that: Two L-shaped insulating plates, symmetrically distributed in an L-shape and inserted into the PCB circuit board, are respectively provided between the positive voltage doubler rectifier assembly, the negative voltage doubler rectifier assembly, and the X-ray tube die for high insulation isolation between them.

4. A radiation source device for an X-ray machine according to claim 1, characterized in that: A T-shaped insulating plate for high insulation isolation between the KV sampling resistor and the step-up transformer is also inserted.

5. A radiation source device for an X-ray machine according to claim 1, characterized in that: The base plate is also provided with multiple elongated grid holes for heat dissipation of the PCB circuit board.

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