KR102515761B1 - X-ray tube - Google Patents

Abstract

The present invention is a case formed with an accommodation space therein; an X-ray generator provided in the accommodation space to emit X-rays; at least one shielding member provided between the case and the X-ray generator to shield the X-rays; a power connection part of which is exposed to the outside of the case and which supplies electricity to the X-ray generator; and at least one first high voltage blocking part coupled to one outer surface of the case and formed to cover part or all of the power connection part. Discloses an X-ray tube comprising a.
According to the present invention, damage to peripheral components due to arc generation can be prevented in advance by forming an insulating member to cover the outside of the power connection portion and the anode electrode exposed to the outside of the case.

Description

X-ray tube {X-RAY TUBE}

The present invention can realize miniaturization of the product by providing a window formed of a high-insulation material on one side of the case, and by forming the outside of the power connection portion and the anode electrode exposed to the outside of the case to be surrounded by an insulating member, the surrounding area due to arc generation It relates to an X-ray tube capable of preventing damage to parts in advance.

In addition, the present invention relates to an X-ray tube used for X-ray imaging, and more particularly, by placing a plurality of shielding members capable of shielding X-rays inside a case, an X-ray tube capable of effectively securing an insulation effect and exposure safety. It's about the tube.

In general, an X-ray source is a device that generates X-rays, and consists of an X-ray tube composed of a cathode and an anode in a vacuum tube, a high voltage control and generator device for applying high voltage to the X-ray tube, and a cooling device for cooling the heat generated from the X-ray tube. It can be.

In the case of an X-ray apparatus using such an X-ray source, an electron source such as a tungsten filament is heated to a high temperature and emitted electrons collide with a target. However, conventional X-ray sources are not only difficult to operate digitally because of instantaneous switching or current modulation, but also have difficulties in high power consumption, energy distribution and directionality of emitted electrons, and electron focusing.

To overcome these difficulties, an X-ray tube using a carbon nanotube (CNT) as a field emitter has been developed. In this way, when a carbon nanotube is applied as an electron emission source that emits electrons by a voltage applied to a gate electrode formed in a triode or tetrode structure, digital driving is possible and electron beam focusing is easy, so that conventional thermal electron It has the advantage of being more compact than the emission X-ray tube.

On the other hand, Figure 1 is a perspective view of a thermoelectron-based X-ray tube according to the prior art.

As shown in FIG. 1, the conventional X-ray tube 1 includes a bellows type metal case 11 for maintaining a sufficient insulation distance in a limited length, and a metal material exposed on one side of the case 11. It may include an electrode 12 of, and a power connection part (not shown) for supplying power.

Since the X-ray window 14 is formed in the metal case 11 rather than an insulator in the above structure, there is a problem in that when a high voltage is applied to the anode, it is applied to the window 14 and exposed to the high voltage. Therefore, when manufacturing the X-ray generator, the insulation distance for high-voltage insulation must be greatly increased, and since a lot of insulating oil must be filled, the size is inevitably increased. That is, even if the metal case 11 is formed in a bellows type, there is a limit to making the size compact.

In addition, due to the increase in insulation distance and the filling of insulating oil, the weight also increases, and the entire system driving unit to support it increases the size and required performance of the instruments, so the manufacturing cost is also increased, making the application system in a very inefficient way. can only be made

Patent Publication No. 10-2019-0093335 (published on August 9, 2019)

An object of the present invention is to provide a window formed of a high-insulation material on one side of the case to realize miniaturization of the product, and to increase the insulation distance by overlapping the outside of the power connection portion and the anode electrode exposed to the outside of the case with an insulating member. It is an object of the present invention to provide an X-ray tube capable of preventing damage to peripheral parts due to arc generation by forming it in advance.

An X-ray tube according to the present invention for achieving the above object is a case formed with an accommodation space therein; an X-ray generator provided in the accommodation space to emit X-rays; at least one shielding member provided between the case and the X-ray generator to shield the X-rays; a power connection part of which is exposed to the outside of the case and which supplies electricity to the X-ray generator; and at least one first high voltage blocking part coupled to one outer surface of the case and formed to surround part or all of the power connection part.

In addition, a first coupling part may be formed in a depression on an outer surface of the case so that the first high voltage blocking part can be inserted.

Also, the first high voltage blocking unit may be detachably coupled to the case.

In addition, a plurality of first high voltage blocking units may be provided, and each may be spaced apart from each other in an outward direction with the power connection unit as a center.

In addition, the first high voltage blocking unit may be provided in at least one of a circular pipe shape and a rectangular pillar shape.

In addition, the X-ray generator is provided on a first insulating support member provided on one side of the case, an emitter supported on the first insulating support member to emit electrons, and an upper portion of the first insulating support member to A gate electrode for extracting electrons from the emitter, a second insulating support member for supporting the gate electrode in the accommodation space so that the gate electrode can be spaced apart from the first insulating support member, and provided on the other side of the case and an anode electrode generating X-rays by collision with the electrons.

In addition, a second high voltage blocking portion coupled to the other outer surface of the case and formed to surround the periphery of the anode electrode may be further included.

In addition, a second coupling part may be recessed on the other outer surface of the case so that the second high voltage blocking part can be inserted.

In addition, the second high voltage blocking unit may be provided to be compatible with the first high voltage blocking unit.

In addition, one side of the power connector is electrically connected to the emitter, and the other side is exposed to the outside of the case and is electrically connected to a cathode power connector for supplying cathode power to the emitter, and one side is electrically connected to the gate electrode, and the other side A gate power connection portion exposed to the outside of the case and supplying gate power to the gate electrode may be included.

The first high voltage blocking unit may include a first blocking wall disposed between the cathode power connection part and the gate power connection part, and a second blocking wall formed to surround the cathode power connection part and the gate power connection part.

In addition, the second blocking wall is formed in a circular pipe shape to accommodate the cathode power connection part and the gate power connection part therein, and the first blocking wall is formed in a square column shape, and inside the second blocking wall It may be provided to partition between the cathode power connection part and the gate power connection part.

In addition, the first high voltage blocking part may be formed to be longer than the length of the cathode power connection part exposed to the outside of the case.

In addition, the case may include an upper plate, a lower plate, and a body portion connecting the upper plate and the lower plate to form the accommodation space therein.

In addition, coupling grooves may be recessed on one surface of the upper plate and the lower plate so that the shielding member can be inserted therein.

In addition, the shielding member is provided in plurality, is formed shorter than the length of the body portion may be alternately coupled to the upper plate and the lower plate.

In addition, the body portion may be detachably provided from the upper plate and the lower plate, and a distance between the anode electrode and the gate electrode may be adjusted according to a length of the body portion.

In addition, each of the shielding members is formed with a first outlet for emitting the X-rays generated by the X-ray generating unit to the outside, and the case has a second outlet for emitting the X-rays that have passed through the first outlet to the outside. An emission hole is formed, and a window through which the X-rays can pass may be coupled to the second emission hole.

In addition, the second discharge hole may be provided at a position corresponding to the first discharge hole, and the first discharge hole and the second discharge hole may be formed in a tapered shape with a width increasing in a direction in which the X-rays are emitted.

In addition, the window may be formed of one selected from beryllium, sapphire, quartz, and glass.

According to the present invention, by placing a plurality of shielding members capable of shielding X-rays inside the case, it is possible to effectively secure insulation effect and exposure safety.

In addition, since an X-ray emission port is formed in each of the shielding member and the case so that the window can be coupled to one side of the case, the X-ray tube can be miniaturized.

In addition, by forming the window with a high insulator such as beryllium, sapphire, quartz, or glass, electrical interference due to high voltage generated from the emitter and anode electrodes can be minimized.

In addition, as the first high voltage blocking unit is formed to surround the outside of the power connection unit exposed to the outside of the case, insulation of the power connection unit can be secured, which can reduce the occurrence of an arc and solve the problem of damaging peripheral components.

In addition, since the second high voltage blocking part for securing insulation of the anode electrode exposed to the outside of the case is formed to be compatible with the first high voltage blocking part, manufacturing is facilitated and manufacturing cost can be reduced.

In addition, the distance between the anode electrode and the gate electrode can be adjusted according to the length of the body part by providing the body part constituting the sidewall of the case to be detachable from the upper plate and the lower plate. Accordingly, it is possible to easily control the change in the trajectory of electrons emitted from the emitter, thereby securing high-efficiency electron emission characteristics, and increasing the lifespan of the device through stable electron emission.

1 is a perspective view of an X-ray tube according to the prior art.
Figure 2 is a cross-sectional view of an X-ray tube according to an embodiment of the present invention.
Figure 3 is an exploded view of the case shown in Figure 2;
4 is a perspective view illustrating a state in which a first high voltage blocking unit is disassembled from the case shown in FIG. 2;
5 is a perspective view illustrating a state in which a second high voltage blocking unit is disassembled from the case shown in FIG. 2;

Hereinafter, an X-ray tube according to a preferred embodiment will be described in detail with reference to the accompanying drawings. Here, the same reference numerals are used for the same components, and repeated descriptions and detailed descriptions of known functions and configurations that may unnecessarily obscure the subject matter of the invention are omitted. Embodiments of the invention are provided to more completely explain the present invention to those skilled in the art. Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clarity.

2 is a cross-sectional view of an X-ray tube according to an embodiment of the present invention, and FIG. 3 is an exploded view of the case shown in FIG. 2 . Further, FIG. 4 is a perspective view showing a state in which the first high voltage blocking unit is disassembled from the case shown in FIG. 2 , and FIG. 5 is a perspective view showing a state in which the second high voltage blocking unit is disassembled from the case shown in FIG. 2 .

2 to 5, the X-ray tube 100 includes a case 110, an X-ray generator 120, a shielding member 130, a power connector 140, and a first high voltage blocking unit 150. ) may be included.

The case 110 may be formed in a cylindrical shape with an accommodation space 110a formed therein. For example, the case 110 includes a disk-shaped upper plate 111 and a lower plate 112, and a body portion 113 connecting the upper plate 111 and the lower plate 112 to form an accommodation space 110a therein. can include Among them, two through holes 112c may be formed in the longitudinal direction at the center of the lower plate 112, and one of them guides the cathode power connector 141 described below to be inserted into the emitter 122 side, The other one may be a guide hole for guiding the gate power connector 142 to be inserted into the gate electrode 123 side.

The case 110 may be formed of an insulating material such as ceramic or quartz to prevent electrical interference with electrons generated from the X-ray generator 120, which will be described later. It can be made in a vacuum state.

The X-ray generator 120 is provided in the receiving space 110a of the case 110 to emit X-rays, and includes a first insulating support member 121, an emitter 122, a gate electrode 123, A second insulating support member 124 and an anode electrode 125 may be included.

The first insulating support member 121 serves to electrically insulate between the case 110 and the emitter 122 and may be supported on one side of the case 110 . For example, the first insulating support member 121 may be formed of a ceramic material, and may be positioned in the accommodation space 110a and coupled to the lower plate 112 of the case 110 by bonding or interference fitting. there is. A second through hole may be formed in the first insulating support member 121 at a portion corresponding to the through hole 112c of the lower plate 112 .

The emitter 122 may be directly formed on the surface of the first insulating support member 121 or may be formed on a separate substrate, and may be coupled to the first insulating support member 121 to emit electrons. Here, a plurality of carbon nanotubes (CNTs) emitting electrons may be deposited on the emitter 122 .

For example, carbon nanotubes may be deposited on the surface of the emitter 122 through one process selected from CVD, PECVD, and screen printing. Accordingly, when power is applied to the emitter 122 , electrons may be emitted from the plurality of carbon nanotubes deposited on the emitter 122 . In this way, as the emitter 122 is formed using carbon nanotubes, which is a nanomaterial, high current per unit area can be emitted, so that clear radiation image information can be obtained compared to conventional thermoelectron-type electron supply sources.

The gate electrode 123 is provided above the emitter 122 to extract electrons from the emitter 122 . For example, the gate electrode 123 extracts electrons from the emitter 122 to increase the emission amount of electrons emitted from the emitter 122, and the extracted electrons do not spread or scatter, and the anode electrode 125 It can be focused so that it can move to the side.

Specifically, the gate electrode 123 includes a plate 123a that forms an appearance and can be electrically connected to the gate power connector 142, and a metal mesh 123b that uniformly extracts electrons from the emitter 122. ) may be included. For example, the plate 123a may be formed in a circular plate shape, and the mesh 123b may be formed in a honeycomb shape having hexagonal openings. In this way, as the shape of the mesh 123b is formed in a honeycomb shape having hexagonal openings, the mesh 123b efficiently extracts electrons while the electrons are not collided with the metal mesh and are stably released. can

The second insulating support member 124 is to insulate between the emitter 122 and the gate electrode 123, and the gate electrode 123 can be spaced apart from the emitter 122 in the receiving space 110a. The gate electrode 123 may be supported. For example, the second insulating support member 124 may be formed of a ceramic material, and is formed in a circular plate shape with a hollow inside, and one side is coupled to the first insulating support member 121 or the case 110. and the other side may be coupled to the gate electrode 123. Accordingly, electrons emitted from the emitter 122 can move toward the gate electrode 123 through the hollow of the second insulating support member 124 .

The anode electrode 125 is provided on the other side of the case 110 and may generate X-rays by collision with electrons. For example, the anode electrode 125 may be bonded to the insertion hole 111c formed in the top plate 111 of the case 110 by bonding or interference fitting, and a portion of the target is formed inside the case 110. , and the rest may be exposed to the outside of the case 110 . Therefore, when positive power is supplied to the anode electrode 125, electrons emitted from the emitter 122 collide with the target of the anode electrode 125 and are reflected, thereby generating X-rays.

At least one shielding member 130 may be provided, and may be provided between the case 110 and the X-ray generator 120 to shield X-rays generated from the X-ray generator 120 . For example, the shielding member 130 may be formed of a ceramic material, and may be formed to correspond in appearance to the shape of the body portion 113 . That is, when the body part 113 is formed in a circular pipe shape, the shielding member 130 may also be provided in a circular pipe shape. It may be formed to have a smaller diameter. Accordingly, a plurality of shielding members 130 capable of shielding X-rays can be positioned inside the case 110, and by these shielding members 130, the X-ray tube 100 has an insulating effect and exposure safety. can be obtained effectively.

The shielding member 130 may be formed shorter than the length of the body portion 113 and alternately coupled to the upper plate 111 and the lower plate 112 . For example, as shown in FIG. 3, when two shielding members 130 are provided, the first shielding member 131 and the second shielding member 132, the top plate 111 has a first shielding member 131 ) A first coupling groove 111b into which one side is inserted is formed, and a second coupling groove 112b into which one side of the second shielding member 132 is inserted may be formed on one surface of the lower plate 112. Accordingly, the first shielding member 131 and the second shielding member 132 may be alternately coupled to the upper plate 111 and the lower plate 112, and due to this structure, one side of the shielding member 130 is the upper plate ( 111) or may be spaced apart from the lower plate 112 at predetermined intervals. Therefore, when the cooling member is installed inside the case 110, heat dissipation efficiency can be improved through the gap.

A portion of the power connection unit 140 may be exposed to the outside of the case 110 and may receive power from the outside to supply electricity to the X-ray generator 120 side. Specifically, the power connection unit 140 may include a cathode power connection unit 141 and a gate power connection unit 142 .

One side of the cathode power connector 141 is electrically connected to the emitter 122 and the other side is exposed to the outside of the case 110 to supply cathode power to the emitter 122 . For example, the cathode power connector 141 may be formed in a wire shape, and is electrically connected to an external power supply device through a surface exposed to the outside of the case 110 to supply cathode power to the emitter 122 side. can Accordingly, when cathode power is supplied to the emitter 122 through the cathode power connector 141 , electrons may be emitted from the emitter 122 provided on the first insulating support member 121 .

One side of the gate power connector 142 is electrically connected to the gate electrode 123 and the other side is exposed to the outside of the case 110 to supply gate power to the gate electrode 123 . For example, the gate power connector 142 may be formed in a wire shape, and is electrically connected to an external power supply device through a surface exposed to the outside of the case 110 to supply gate power to the gate electrode 123. can Accordingly, when gate power is supplied to the gate electrode 123, the gate electrode 123 can increase the amount of electrons emitted from the emitter 122 and accelerate the speed of the emitted electrons.

The first high voltage blocking unit 150 may be coupled to one outer surface of the case 110 and may cover part or all of the power connection unit 140 . For example, the first high voltage blocking unit 150 may be coupled to one outer surface of the case 110, and may be provided in at least one of a circular pipe shape and a square column shape, which will be described in detail later. .

The first high voltage blocking unit 150 may be provided in plurality, and may be spaced apart from each other in an outward direction with the power connection unit 140 as the center. In this way, as the first high voltage blocking unit 150 is formed to surround the outside of the power connection unit 140 in multiple layers, the power connection unit 140 is not exposed to the outside and insulation can be secured, which prevents arc generation. It can solve the problem of damaging the surrounding parts by reducing it.

One side of the first high voltage blocking unit 150 may be detachably coupled to the case 110 . For example, a first coupling portion 112a may be formed in a depression on an outer surface of the lower plate 112 so that the first high voltage blocking portion 150 can be inserted, and the first coupling portion 112a may have a first coupling portion 112a. The high voltage blocking unit 150 may be detachably coupled to each other by way of interference fitting, screw coupling, or the like.

In this way, when the first high voltage cutoff 150 is detachably coupled to the case 110, the first high voltage cutoff corresponding to the length of the power connector 140 can be selected and detached from the case 110. Therefore, there is an effect of increasing the compatibility of the case 110.

The first high voltage blocking part 150 may be longer than the length of the power connection part 140 exposed to the outside of the case 110, and includes the first blocking wall 151 and the second blocking wall 152. can do.

The first blocking wall 151 may be disposed between the cathode power connection unit 141 and the gate power connection unit 142, and the second blocking wall 152 connects the cathode power connection unit 141 and the gate power connection unit 142. It can be formed to wrap. For example, the second blocking wall 152 is formed in a circular pipe shape to accommodate the cathode power connection unit 141 and the gate power connection unit 142 therein, and the first blocking wall 151 is a rectangular pillar. It may be formed into a shape to partition between the cathode power connection unit 141 and the gate power connection unit 142 inside the second blocking wall 152 .

As described above, since the cathode power connection part 141 and the gate power connection part 142 are not exposed to the outside by the first blocking wall 151 and the second blocking wall 152, the insulation length of the gate power connection part 142 is reduced. It can be formed longer than before, and it is possible to secure the stability of the X-ray tube 100 generating a high voltage of 200 kV or more by increasing the current pass.

Meanwhile, the X-ray tube 100 may further include a second high voltage blocking unit 160 for securing insulation of the anode electrode 125 exposed to the outside of the case 110 .

The second high voltage blocking unit 160 may be formed of a ceramic material, be coupled to the other outer surface of the case 110, and may be formed to surround the anode electrode 125. For example, the second coupling part 111a may be recessed on the other outer surface of the case 110 so that the second high voltage blocking part 160 can be inserted therein, and the second high voltage blocking part 160 may be formed in a recessed manner. It may be detachably coupled to the coupling part 111a in a manner such as an interference fit or screw coupling.

The second high voltage blocking unit 160 may be provided compatible with the first high voltage blocking unit 150 . That is, the second high voltage blocking unit 160 may be formed in the same shape as the first high voltage blocking unit 150, and may be provided compatible with the second blocking wall 152 formed in a circular pipe shape. there is.

In this way, when the second high voltage blocking unit 160 is provided to be compatible with the first high voltage blocking unit 150, the second high voltage blocking unit 160 does not need to be separately manufactured, thereby facilitating manufacturing and reducing manufacturing costs. will be able to reduce

According to the present invention, the X-ray tube 100 may further include a window 170 for emitting X-rays to the outside.

For example, a first discharge port 130a is formed in each shielding member 130 to emit X-rays generated by the X-ray generator 120 to the outside, and the case 110 has a first discharge port 130a. ) A second emission port 113a may be formed to emit X-rays passing through the outside. In addition, by forming a step 113b on which the window 170 can be seated around the case 110 in which the second emission hole 113a is formed, a window 170 through which X-rays can pass through the second emission hole 113a. ) can be combined. Here, the second discharge port 113a may be provided at a position corresponding to the first discharge port 130a and may be formed so that their center lines coincide, and the first discharge port 130a and the second discharge port 113a are It may be formed in a tapered shape in which the width increases in a direction in which X-rays are emitted.

Accordingly, X-rays that collide with the target of the anode electrode 125 and are reflected may pass through the first emission hole 130a and be emitted to the outside through the window 170 provided in the second emission hole 113a. In this case, since the window 170 is formed of one selected from beryllium, sapphire, quartz, and glass, which are high insulators, electrical interference caused by high voltage generated from the emitter 122 and the anode electrode 125 can be minimized.

According to the present invention, the body portion 113 may be detachably provided on the upper plate 111 and the lower plate 112, and the anode electrode 125 and the gate electrode 123 are formed by the length of the body portion 113. The distance between them can be adjusted. That is, the distance between the anode electrode 125 and the gate electrode 123 may increase or decrease according to the length of the body portion 113, and the trajectory of electrons emitted from the emitter 122 through the distance control of these electrodes Changes can be easily controlled. Accordingly, it is possible to secure high-efficiency electron emission characteristics and increase the lifespan of the device through stable electron emission.

As described above, the X-ray tube 100 can effectively ensure insulation effect and exposure safety by placing a plurality of shielding members 130 capable of shielding X-rays inside the case 110 .

In addition, since the window 170 can be coupled to one side of the case 110 by forming the X-ray outlets 130a and 113a in the shielding member 130 and the case 110, respectively, the size of the X-ray tube 100 can be reduced. can be implemented.

In addition, by forming the window 170 with a high insulator such as beryllium, sapphire, quartz, or glass, electrical interference due to high voltage generated from the emitter 122 and the anode electrode 125 can be minimized.

In addition, as the first high voltage blocking unit 150 is formed to cover the outside of the power connection unit 140 exposed to the outside of the case 110 in layers, insulation of the power connection unit 140 can be secured, which prevents arc generation. can be reduced to solve the problem of damaging surrounding parts.

In addition, as the second high voltage blocking part 160 for securing insulation of the anode electrode 125 exposed to the outside of the case 110 is formed to be compatible with the first high voltage blocking part 150, manufacturing becomes easy. At the same time, the manufacturing cost can be reduced.

In addition, by providing the body portion 113 constituting the sidewall of the case 110 detachably from the upper plate 111 and the lower plate 112, the anode electrode 125 and the gate electrode ( 123) to adjust the distance between them. Accordingly, it is possible to easily control the change in the trajectory of electrons emitted from the emitter 122 to ensure high-efficiency electron emission characteristics, and to increase the lifespan of the device through stable electron emission.

The present invention has been described with reference to an embodiment shown in the accompanying drawings, but this is only exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. You will be able to. Therefore, the true protection scope of the present invention should be defined only by the appended claims.

110: case
120: X-ray generator
121: first insulating support member
122: emitter
123: gate electrode
124: second insulating support member
125 anode electrode
130: shielding member
140: power connection
150: first high voltage blocking unit
160: second high voltage blocking unit
170: window

Claims (20)

A case with an accommodation space formed therein;
an X-ray generator provided in the accommodation space to emit X-rays;
at least one shielding member provided between the case and the X-ray generator to shield the X-rays;
a power connection part of which is exposed to the outside of the case and which supplies electricity to the X-ray generator; and
At least one first high voltage blocking part coupled to one outer surface of the case and formed to surround part or all of the power connection part;
The X-ray generator,
A first insulating support member provided on one side of the case;
an emitter supported on the first insulating support member to emit electrons;
a gate electrode provided above the first insulating support member to extract electrons from the emitter;
a second insulated support member supporting the gate electrode in the accommodation space so that the gate electrode can be spaced apart from the first insulated support member;
An anode electrode provided on the other side of the case and generating X-rays by collision with the electrons;
power connection,
A cathode power connector having one side electrically connected to the emitter and the other side exposed to the outside of the case to supply cathode power to the emitter;
A gate power connector having one side electrically connected to the gate electrode and the other side exposed to the outside of the case to supply gate power to the gate electrode;
The first high voltage blocking unit includes a first blocking wall disposed between the cathode power connection part and the gate power connection part, and a second blocking wall formed to surround the cathode power connection part and the gate power connection part.
According to claim 1,
An X-ray tube in which a first coupling part is formed to be recessed on an outer surface of the case so that the first high voltage blocking part can be inserted.
According to claim 1,
The first high voltage blocking unit is detachably coupled to the case of the X-ray tube.
According to claim 1,
The first high voltage blocking unit is provided in plurality, and is spaced apart from each other in an outward direction with the power connection unit as a center.
According to claim 1,
The first high voltage blocking unit is provided in at least one of a circular pipe shape and a square column shape.
delete According to claim 1,
The X-ray tube further comprises a second high voltage blocking part coupled to the outer surface of the case and formed to surround a periphery of the anode electrode.
According to claim 7,
An X-ray tube in which a second coupling part is recessed so that the second high voltage blocking part can be inserted into the other outer surface of the case.
According to claim 7,
The second high voltage blocking unit is provided to be compatible with the first high voltage blocking unit.
delete delete According to claim 1,
The second blocking wall is formed in a circular pipe shape to accommodate the cathode power connection part and the gate power connection part therein,
The first blocking wall is formed in a quadrangular pillar shape, and is provided to partition between the cathode power connection part and the gate power connection part inside the second blocking wall.
According to claim 1,
The first high voltage blocking part is formed to be longer than the length of the power connection part exposed to the outside of the case.
A case with an accommodation space formed therein;
an X-ray generator provided in the accommodation space to emit X-rays;
at least one shielding member provided between the case and the X-ray generator to shield the X-rays;
a power connection part of which is exposed to the outside of the case and which supplies electricity to the X-ray generator; and
At least one first high voltage blocking part coupled to one outer surface of the case and formed to surround a part or all of the power connection part;
The case includes an upper plate, a lower plate, and a body portion connecting the upper plate and the lower plate to form the accommodation space therein.
According to claim 14,
One surface of the upper plate and the lower plate is an X-ray tube in which a coupling groove is formed to be recessed so that the shielding member can be inserted.
According to claim 14,
The shielding member is provided in plurality, is formed shorter than the length of the body portion is coupled alternately to the upper plate and the lower plate X-ray tube.
According to claim 14,
The body part is detachably provided to the upper plate and the lower plate, and the distance between the anode electrode and the gate electrode is adjusted by the length of the body part.
A case with an accommodation space formed therein;
an X-ray generator provided in the accommodation space to emit X-rays;
at least one shielding member provided between the case and the X-ray generator to shield the X-rays;
a power connection part of which is exposed to the outside of the case and which supplies electricity to the X-ray generator; and
At least one first high voltage blocking part coupled to one outer surface of the case and formed to surround a part or all of the power connection part;
A first outlet for emitting the X-rays generated by the X-ray generator to the outside is formed in each of the shielding members, and a second outlet for emitting the X-rays that have passed through the first outlet to the outside is formed in the case. Is formed, and a window through which the X-rays can pass is coupled to the second outlet.
According to claim 18,
The second discharge hole is provided at a position corresponding to the first discharge hole, and the first discharge hole and the second discharge hole are formed in a tapered shape in which a width increases in a direction in which the X-rays are emitted.
According to claim 18,
The window is an X-ray tube formed of one selected from beryllium, sapphire, quartz, and glass.

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