X-ray source module

FIELD: roentgen engineering; producing roentgenograms, for instance in medicine.

SUBSTANCE: proposed X-ray source module has X-ray tube incorporating body, cathode and anode assemblies, as well as generator unit incorporating high-rating voltage divider whose high-voltage lead is connected to one of tube assemblies; X-ray tube body is made in the form of metal cylinder accommodating sectionalized cylindrical high-voltage insulator. One of its ends is connected through vacuum-tight joint to one of body ends and other end mounts cathode assembly. Anode assembly is disposed on other end of body and is made in the form of anode tube brought outside the body that carries target on its loose end. Generator unit is disposed inside cylindrical high-voltage insulator whose inner space is filled with oil. Side surface of insulator functions as high-rating voltage divider.

EFFECT: reduced mass and size of module.

1 cl, 1 dwg

 

The invention relates to rechentechnik and can be used in the development of x-ray apparatus used, for example, for diagnostics in medicine.

Currently, due to a number of advantages that are increasingly portable x-ray units, made in monoblock.

Closest to the claimed technical solution is to design monoblock portable x-ray machine L (Rechentechnik. Handbook / edited VLV, book 1. - M.: Mashinostroenie, 1989, s, 29).

Monoblock consists of a housing, inside which is placed the x-ray tube, the generator device with the high-voltage divider, four compensating temperature changes in the volume of transformer oil. On the inner surface of the monoblock fixed lead protection from an unused x-ray radiation. X-ray tube contains a glass case, as well as cathodic and anodic sites. The high-voltage generator output device connected to one of the nodes of the x-ray tube. The internal volume of the shell of the candy bar filled with oil, which ensures a dielectric strength of structural elements and the heat sink. In the monoblock case there is an output window for the release of the working beam x-ray) the treatment, and a connector for supplying low voltage power to the emitter.

Since nodes are placed inside a candy bar, for example, x-ray tube, high-voltage divider, have their own housing and are connected to additional lines, this candy bar has a large size and weight. The increase in size leads to the increase of oil volume, the extension of which when heated in the process must be compensated by means of special joints, additionally increases the volume of the candy bar. Accordingly, the increased size and weight of the lead coating enclosure used to protect from an unused x-ray, which also increases the weight of the candy bar.

The technical result of the invention consists in reducing the weight of the monoblock and the reduction of its size.

To achieve the technical result in the monoblock x-ray source containing the x-ray tube, consisting of a body, the cathode and anode assemblies, as well as generating device with high-voltage divider, high voltage output of which is connected to the cathode node, the case of x-ray tube made in the form of a metal cylinder. Inside the cylinder is partitioned cylindrical high voltage insulator, and one end of soybeans is inen vacuum-tight with one of the ends of the housing, and on the other end installed cathodic site. The anode node is located at the other end of the body and is made in the form of the anode tube, the free end of which is fixed a target that can be output window. On the anode tube tightly planted with a lead pipe. Generating device placed inside the high voltage cylindrical insulator, the internal volume of which is filled with oil, and the side surface of the insulator plays the role of a high-voltage voltage divider.

The essence of the claimed invention consists, first, in carrying metal parts of the housing of the x-ray tube so that he began to perform the role of housing the entire piece, and the dielectric part of the role of high-voltage voltage divider generating device, and rendering the anode node outside of the body, and, secondly, the location of the generating device inside the high voltage cylindrical insulator, which generally helps to make the design of monoblock most lightweight, compact and reliable.

The use of cylindrical insulator in high voltage divider voltage generator device allows to exclude from the design of monoblock series of large parts, such as resistors high voltage of the voltage divider elements and their mounting. Slightly the e amount of oil, which fills the remaining volume of the cylindrical high voltage insulator, does not require the use of large joints, which, in turn, also reduces the weight and dimensions of monoblock.

Because the target is outside of the piece with the help of the anode tubes for protection from an unused x-ray radiation is sufficient to cover the lead only its outer surface, which will further significantly reduce the weight of the candy bar.

The essence of the invention is illustrated in the drawing, which presents the design of the piece.

Monoblock x-ray source includes an x-ray tube 1 consisting of a body 2 made in the form of a cylinder, and a generating device 6. Inside the housing 2 is cylindrical high voltage insulator 3, one end of which is connected vacuum-tight to one of the ends of the housing 2, and on the other end is cathode Assembly 5 which by means of a collet connector 4 is connected to the generating device 6 placed inside the high voltage cylindrical insulator 3. A cylindrical insulator consists of two sections of different length. The length of the section 11, is connected to the cathode node is not less than 100 times the length of section 12 connected to the body tube. The anode unit is designed in the form of the anode of the tube 7, to free the end of which is fixed a target of 8 massive or " through " type, and located at the other end of the body 2, the outer surface of the anode pipe covered with a layer of lead cylindrical shape 9. On the opposite end of the body 2 has a connector for supplying low-voltage power supply block.

When the monoblock low voltage AC voltage is applied to the generator device 6 through the connector 10. Generating unit 6 generates a constant high voltage of negative polarity relative to the body 1 monoblock. Under the influence of high voltage insulator 3 is charged and on its surface there is a potential the magnitude of which is determined by the length of each section. The length ratio of, for example, 100 to 1, the output voltage of the generator device 6 will be divided by 100 to 1. Depending on the output voltage signal produced by a "short" section of the insulator is from several hundred volts to units of kilovolts and directly used to monitor and control the operation of the monoblock. The electrons, which are emitted by cathode node 4 are accelerated into the target anode 8 of the node.

Since electrons are decelerated in the target 8, which is located outside the chassis monoblock 2, the protection from an unused x-ray radiation is placed only on a small area of the anode tube, and not over the whole body candy bar.

N the working beam 13, directed at an angle αequal to 90 degrees, to the axis of the tube will be absorbed lead pipe 9 and the structural elements of the piece, for example generating device.

For best results, the case of x-ray tube is made of stainless steel, high-voltage cylindrical insulator is made of ceramic, the output feedback voltage from the low voltage arm of the divider copper.

Thus, the claimed design, in contrast to the known can significantly reduce the weight and dimensions of monoblock, which will greatly facilitate its use in portable x-ray machines.

Monoblock x-ray source containing the x-ray tube, consisting of a body, the cathode and anode assemblies, as well as generating device with high-voltage divider, high voltage output of which is connected to one of the nodes of the tube, characterized in that the housing of the x-ray tube made in the form of a metal cylinder, inside of which is a two-piece cylindrical high voltage insulator, while its one end is connected vacuum-tight to one of the ends of the housing and at the other end of the installed cathodic site, and the length of the section, on which is mounted a cathode Assembly, not less than 100 times the length of the section, with whom United with the end of the body, the anode node, in turn, is located at the other end of the body and is made in the form outside the body of the anode tube, the free end of which is fixed target, while generating device placed inside the high voltage cylindrical insulator, the internal volume of which is filled with oil, and the side surface of the insulator plays the role of a high-voltage voltage divider.



 

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