KR101136482B1 - Opened x-ray generating apparatus - Google Patents

Abstract

PURPOSE: An open type x-ray generation apparatus is provided to easily alternate a receptacle by omitting a high-voltage insulation cable and to reduce manufacturing costs and the size of housing. CONSTITUTION: A high voltage power source unit(40) is touched with a vacuum formation unit(21). An electron gun unit(60) receives a power source from the high voltage power source unit and emits electronics to target. The electron gun unit is detachably installed to the high voltage power source unit. A vacuum insulated space for vacuum insulation is formed in a portion in which the electron gun unit and the high voltage power source unit are faced. A connecting unit is arranged in the vacuum insulated space in order to electrically connect the high voltage power source unit and the electron gun unit. A source unit(20) comprises the vacuum formation unit and a removable unit(23).

Description

Open X-ray Generating Device {OPENED X-RAY GENERATING APPARATUS}

The present invention relates to an X-ray generator, and more particularly, to an open type X-ray generator including an electron gun unit detachably connected to a high voltage power supply molded with an insulating resin, and vacuum insulating between the high voltage power supply and the electron gun unit. .

In general, the open type X-ray generator can generate a vacuum state arbitrarily, unlike the closed type supplied for a single use, and it is possible to replace a filament or a target which is a consumable.

Such a conventional open type X-ray generator includes a source portion 1 which is partially vacuumed during operation as shown in FIG. 1, and the source portion 1 is above the vacuum forming portion 1a positioned below. Located in and formed of a removable portion (1b) hinged to the vacuum forming portion (1a). Therefore, by attaching and detaching the portion 1b to one side through the hinge connection, it is possible to open the open upper end of the vacuum forming portion (1a), access to the filament (cathode) (F) installed in the vacuum forming portion (1a) It is possible.

The source unit 1, on which the target 2 is installed, and the power supply unit 3 for applying a high voltage to the source unit 1 are electrically connected to each other by a high voltage insulated cable 5. In the high voltage insulated cable 5, the connecting portions 5a and 5b are inserted into the first and second receptacles 7 and 8 provided at the source portion 1 and the power supply portion 3, respectively, and the connecting portions 5a and 5b are provided. The connectors 6a and 6b are formed at the tip of the. The first receptacle 7 is installed in the vacuum forming section 1a and the filament F is disposed at the tip thereof, and the second receptacle 8 is embedded in the resin molded power supply section 3.

In FIG. 1, reference numerals 11 and 12 are coils, 13 are passages through which electrons move, 15 are pipes communicating the internal space S of the vacuum pump and the vacuum forming unit 1a, 16 are high pressure generating units, and 17 are The filament control part and 18 represent a grid control part, respectively.

On the other hand, the surface of the first receptacle 7 is often contaminated by foreign matter in the process of replacing the filament (F). When the apparatus is operated in a state in which the first receptacle 7 is contaminated after replacing the filament as described above, the foreign matter damages the surface of the first receptacle 7 due to the high voltage, which causes a malfunction of the X-ray generator. .

The process of replacing the damaged first receptacle 7 is as follows. First, the connection portion 5a of the high voltage insulated cable 5 is separated from the first receptacle 7, the first receptacle 7 is separated from the vacuum forming portion 1a, and then a new first receptacle 7 is installed. do.

Subsequently, the new first receptacle 7 is fixed to the vacuum forming unit 1a, and then the high-voltage insulated cable 5 is coated with the insulating silicon 9 on the inner circumferential surface of the first receptacle 7 in which the connecting portion 5a is in contact. After that, the connecting portion 5a is inserted into the first receptacle 7. This insulating silicon 9 is to prevent the high voltage from being discharged through the first receptacle 7, which is an important task that must be performed when the first receptacle 7 is replaced (the second receptacle 8 is also the first receptacle ( Insulate silicon coating work in the same way as 7).

On the other hand, since the insulating silicon 9 is also exposed to a high voltage, it hardens over time and the first and second receptacles 7 and 8 are damaged by the discharge generated thereby. Therefore, in order to prevent damage to the receptacle caused by the insulating silicon, the re-application of the insulating silicon is performed periodically every six months.

However, the insulating silicon coating operation requires a high degree of skill, and if the proper coating amount and uniformity of the coating thickness are not satisfied, the first and second receptacles 7 and 8 may be damaged. Furthermore, when press-fitting the connecting portions 5a and 5b into the first and second receptacles 7 and 8 after the application of the insulating silicon, the coating thickness of the insulating silicon 9 may vary depending on the degree of pressing (pressing input). High care is required. As described above, the conventional X-ray generator has a problem that it is difficult to maintain and takes a long time due to a difficult insulating silicon coating operation that must be performed when the first receptacle 7 is replaced.

In addition, since the conventional open type X-ray generator has to use a high-cost high voltage insulated cable (5), it is a factor that increases the manufacturing cost of the X-ray generator.

In order to solve the above problems, the present invention is to provide an open-type X-ray generator that can easily replace and maintain the receptacle and compactly maintain the size of the overall X-ray generator by omitting a high voltage insulated cable There is this.

In order to achieve the above object, the present invention is a vacuum forming unit that is selectively vacuum-formed by a vacuum source, and the vacuum forming unit is detachably installed at the distal end of the vacuum forming unit so as to open and close the inside of the vacuum forming unit and the target at the distal end. A source part including a detachable part provided; A high voltage power supply connected in contact with the vacuum forming unit; And an electron gun unit which receives power from the high voltage power supply unit and emits electrons toward the target, wherein the electron gun unit is detachably fixed to the high voltage power supply unit.

Preferably, the electron gun unit and the high voltage power supply unit are provided with a vacuum insulation space for vacuum insulation at portions facing each other.

A connector unit for electrical connection between the electron gun unit and the high voltage power supply unit may be disposed in the vacuum insulation space.

The electron gun unit may form at least one communication hole for communicating the interior of the vacuum forming unit with the vacuum insulating space.

The high voltage power supply unit may include a high pressure generating unit, a filament control unit, and a grid control unit and may be molded with an insulating material.

The electron gun unit is an insulating body made of an insulating material detachably coupled to the high-voltage power supply through a fastening member; It includes a filament and a grid installed on the front end of the insulating body, the at least one communication hole is preferably formed in the insulating body.

The high voltage power supply unit may be disposed in the same direction as a length direction of the detachable unit and the vacuum forming unit.

In addition, the high voltage power supply unit and the electron gun unit may be disposed at right angles to the length direction of the detachable part and the vacuum forming unit, in which case the electron gun unit is arranged such that the filament and the grid disposed at the distal end are arranged concentrically with the target. It is preferable that the tip portion of the electron gun unit is bent.

The connector part may include a first connector of the high voltage power supply unit and a second connector of the electron gun unit, and the first and second connectors may be in close contact with each other or elastically.

As described above, in the present invention, the connection between the high voltage power supply unit and the electron gun unit can be directly detached, and at the same time, the electrical connection can be made directly without the high voltage insulated cable. Accordingly, it is possible to fundamentally solve various problems caused by the application of the insulating silicon, which is performed when the high voltage insulating cable and the receptacle are coupled as in the related art. In addition, if the surface of the electron gun unit is contaminated during filament replacement and the electron gun unit is damaged due to such contamination in the future, the electron gun unit can be easily removed from the high voltage power supply unit and then replaced with a new electron gun unit. Compared with the case of use, the work can be easily performed without being greatly influenced by the skill of the operator.

In addition, the present invention can reduce the manufacturing cost of the device by omitting the use of expensive high-voltage insulated cable.

Furthermore, when the high voltage power supply unit is disposed on the side of the vacuum forming unit, the height of the source unit is lowered, so that the size of the housing of various X-ray apparatuses surrounding the open X-ray generator can be kept compact. It has the advantage of reducing the size and weight and manufacturing cost.

1 is a schematic cross-sectional view showing a conventional open type X-ray generator,
2 is a schematic cross-sectional view showing an open type X-ray generating apparatus according to a first embodiment of the present invention,
3 is an enlarged view illustrating part III shown in FIG. 2;
FIG. 4 is a view showing the first receptacle shown in FIG. 2;
5 is a schematic cross-sectional view showing an open type X-ray generator according to a second embodiment of the present invention,
6 is a schematic view showing another example of the connector portion between the high voltage power supply unit and the electron gun unit.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the open-type X-ray generator according to the first and second embodiments of the present invention.

First, the open type X-ray generator according to the first embodiment of the present invention includes a source unit 20, a high voltage power supply unit 40, and an electron gun unit 60.

The source unit 20 includes a vacuum forming unit 21 and a detachable unit 23. The vacuum forming unit 21 has a cylindrical shape and a vacuum is formed in the internal space S1 by a vacuum source (not shown), for example, a vacuum pressure generated by a vacuum pump through a pipe 22 communicating with one side. do. The detachable part 23 includes a target 24 at the tip, and is disposed above the vacuum forming part 21. At this time, the removable unit 23 and the vacuum forming unit 21 to rotate to one side to replace the electron gun unit 60 disposed inside the vacuum forming unit 21 or to open the upper side of the vacuum forming unit 21 during maintenance. The hinge is connected. In addition, the detachable part 23 has an electron path 25 for guiding electrons emitted from the electron gun unit 60 to the target 24, and coils 27a and 27b surrounding the electron path 25 are disposed together. do.

The high voltage power supply unit 40 includes a high pressure generating unit 43a, a filament control unit 43b and a grid control unit 43c therein, which are molded by an insulating resin. The high voltage power supply unit 40 is fixedly coupled to the lower end of the vacuum forming unit 21, this coupling structure may be made of a conventional screw fastening structure or a conventional locking structure.

In addition, referring to FIG. 3, the high voltage power supply unit 40 has a recess 41a formed on the upper surface on which the electron gun unit 60 is mounted so as to secure a space S2 for vacuum insulation. The groove 41a is closed by the bottom surface 61 of the electron gun unit 60 to provide a space in which a vacuum can be formed. This vacuum insulation prevents the high voltage generated in the female and male connectors 42 and 67 interconnected between the high voltage power supply unit 40 and the electron gun unit 60 from being discharged to the vacuum forming unit 21.

3 and 4, the electron gun unit 60 includes an insulating body 61 and a filament F and a grid (not shown) provided at the distal end of the insulating body 61. The insulating body 61 is detachably coupled to the upper end of the high voltage power supply unit 40 by a plurality of fixing bolts 63. In this case, the electron gun unit 60 has a flange portion 62 formed on the outer periphery of the bottom, and a plurality of through holes 62a through which the plurality of fixing bolts 63 pass.

In addition, the flange portion 62 has a communication hole 65 for communicating with the vacuum forming portion 21 and the groove 41a for vacuum insulation. The communication hole 65 may have a vacuum pressure also formed in the space S2 for vacuum-insulating the male and female connectors 42 and 67 when the internal space S1 of the vacuum forming unit 21 is vacuumed. Make sure

As described above, in the open type X-ray generator according to the first embodiment of the present invention, the connection between the high voltage power supply unit 40 and the electron gun unit 60 is directly detachably coupled, as well as the high voltage insulating cable 5 (see FIG. 1). By adopting a structure capable of direct electrical connection without a conventional problem, it is possible to fundamentally solve all the problems caused by the application of insulating silicon, which is performed at the time of coupling between the high voltage insulated cable and the receptacle. In addition, when the filament is replaced, the surface of the electron gun unit 60 is contaminated and if the electron gun unit 60 is damaged in the future due to such contamination, the electron gun unit 60 is simply detached from the high-voltage power supply unit 40, and then a new electron gun unit. Because it can be easily replaced, compared to the case of using a conventional high voltage insulated cable can be easily performed without being greatly affected by the skill of the operator.

Moreover, the electron gun unit 60 can be easily replaced and maintained without being greatly influenced by the skill of the operator.

In addition, the manufacturing cost of the device can be reduced by omitting the use of the expensive high voltage insulated cable 5.

Referring to FIG. 5, in the open type X-ray generator according to the second embodiment of the present invention, the high voltage power supply unit 40a and the electron gun unit 60a can be separated without the high voltage insulated cable 5, as in the first embodiment. The structure which connects directly and electrically is adopted. In addition, most of the configurations of the open type X-ray generator of the second embodiment are the same as those of the first embodiment, and hereinafter, a configuration different from the first embodiment will be described.

The open type X-ray generator according to the second embodiment has a structure different from that of the first embodiment in that the high voltage power supply unit 40a is fixedly coupled to the side of the vacuum forming unit 21.

That is, the high voltage power supply unit 40 and the electron gun unit 60 of the first embodiment are arranged in the same direction as the longitudinal direction of the vacuum forming unit 21 and the detachable unit 23, but the high voltage power supply unit 40a of the second embodiment is different from the high voltage power supply unit 40a. The electron gun unit 60a is disposed at right angles to the longitudinal direction of the vacuum forming unit 21 and the detachable unit 23. In this case, the electron gun unit 60a is bent so that the distal end of the electron gun unit 60a provided with the filament F and the grid (not shown) is arranged concentrically with the target 24.

According to the second embodiment configured as described above, since the height of the source unit 20 is lowered as the high voltage power supply unit 40a is disposed on the side of the vacuum forming unit 21, various X-ray apparatuses having an open X-ray generator are provided. The size of the housing (not shown) of (not shown) can be kept compact. In this case, the housing surrounding the X-ray generator for the radiation shielding is usually made of a shield (lead or high density material), such a shield is expensive and its weight is heavy. Therefore, by lowering the overall height of the X-ray generator, the size (height) of the housing can be lowered together, thereby reducing the weight and manufacturing cost.

On the other hand, the connector portion for the electrical connection between the high-voltage power supply unit 40, 40a and the electron gun unit 60, 60a of the first and second embodiments, as shown in FIG. It is also possible to consist of. That is, in the elastic contact method, the connectors 67 of the electron gun units 60 and 60a are kept as they are, and the connectors of the high voltage power supply units 40 and 40a use the connectors made of a predetermined elastic body to connect the electron gun units 60 and 60a. When mounted on the high voltage power supply (40, 40a) can be elastically in close contact naturally so that the connectors (42a, 67) are interconnected.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

20: source portion 21: vacuum forming portion
23: detachable part 24: target
40, 40a: high voltage power supply 42: female connector
60, 60a: Electron gun unit 62: flange
62a: through hole 63: fixing bolt
65: communication hole 67: male connector
S2: vacuum insulation space

Claims (10)

A source part including a vacuum forming part selectively vacuum-formed by a vacuum source, and a detachable part detachably installed at a distal end of the vacuum forming part to open and close the vacuum forming part and having a target at the distal end;
A high voltage power supply connected in contact with the vacuum forming unit; And
An electron gun unit configured to receive power from the high voltage power supply unit and emit electrons toward the target;
The electron gun unit is detachably fixed to the high voltage power supply unit,
The electron gun unit and the high-voltage power supply unit is an open type X-ray generator, characterized in that a vacuum insulating space for vacuum insulation is formed in a portion facing each other. delete The method of claim 1,
And a connector portion for electrical connection between the electron gun unit and the high voltage power supply portion is disposed in the vacuum insulation space. The method of claim 1,
And the electron gun unit forms at least one communication hole for communicating the inside of the vacuum forming unit with the vacuum insulating space. The method of claim 1,
The high voltage power supply unit includes a high pressure generating unit, a filament control unit and a grid control unit, and an open type X-ray generator, characterized in that molded with an insulating material. The method of claim 4, wherein
The electron gun unit is an insulating body made of an insulating material detachably coupled to the high-voltage power supply through a fastening member;
It includes a filament and a grid installed on the front end of the insulating body,
And said at least one communication hole is formed in said insulating body. The method of claim 1,
And the high voltage power supply unit is disposed in the same direction as the length direction of the detachable unit and the vacuum forming unit. The method of claim 1,
And the high-voltage power supply unit and the electron gun unit are disposed at right angles to the length direction of the detachable part and the vacuum forming unit. The method of claim 8,
The electron gun unit is an open-type X-ray generator, characterized in that the front end portion of the electron gun unit is bent so that the filament and the grid disposed in the concentric with the target. The method of claim 3,
The connector unit comprises a first connector of the high voltage power supply unit and a second connector of the electron gun unit, wherein the first and second connectors are connected to each other in a socket connection or elastically close contact.

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