JP2018049778A

JP2018049778A - X-ray tube device

Info

Publication number: JP2018049778A
Application number: JP2016185509A
Authority: JP
Inventors: 裕記水村; Hiroki Mizumura; 政次金神; Masaji Kinshin
Original assignee: Toshiba Electron Tubes and Devices Co Ltd
Current assignee: Canon Electron Tubes and Devices Co Ltd
Priority date: 2016-09-23
Filing date: 2016-09-23
Publication date: 2018-03-29

Abstract

PROBLEM TO BE SOLVED: To provide an X-ray tube device capable of enhancing cooling efficiency of insulation oil filled in a housing.SOLUTION: An X-ray tube device includes: an X-ray tube; a housing in which the X-ray tube is housed; and insulation oil filled in a space between the X-ray tube and the housing. The X-ray tube includes: a cathode for discharging thermal electrons: an anode for discharging X-rays by collision of electrons discharged from the cathode; and a container housing the cathode and the anode therein. On a wall part of the housing, an insulation oil passage is formed through which the insulation oil flows.SELECTED DRAWING: Figure 1

Description

本発明の実施形態は、Ｘ線管装置に関する。 Embodiments described herein relate generally to an X-ray tube apparatus.

一般に、Ｘ線管装置は、ハウジング内にＸ線管を収納しており、ハウジングとＸ線管との間の空間には絶縁を保持するための絶縁油が充填されている。 In general, an X-ray tube device houses an X-ray tube in a housing, and a space between the housing and the X-ray tube is filled with insulating oil for maintaining insulation.

Ｘ線管では、熱電子のエネルギーのほとんどが熱エネルギーとなるため、多くの熱が発生するが、Ｘ線管で発生した熱は絶縁油を介してハウジングに伝わり、ハウジングから外部に放出される。 In the X-ray tube, most of the energy of the thermoelectron is converted into heat energy, so a lot of heat is generated. However, the heat generated in the X-ray tube is transmitted to the housing via the insulating oil and released from the housing to the outside. .

ハウジングは、その強度確保のため、所定の厚みを持たせてあるが、その厚みのために絶縁油の冷却効率に限界があった。 The housing has a predetermined thickness in order to ensure its strength, but due to the thickness, the cooling efficiency of the insulating oil is limited.

冷却効率が低いと、絶縁油の温度が高くなり、絶縁油が膨張して圧力上昇が生じると、ハウジングが破損するか、破損を防止するため、Ｘ線管の作動に制限がかかり、診断効率が低下する。 If the cooling efficiency is low, the temperature of the insulating oil will rise, and if the insulating oil expands and the pressure rises, the housing will be damaged, or the operation of the X-ray tube will be restricted in order to prevent damage and diagnostic efficiency. Decreases.

実用新案登録第２５８８４０１号公報Utility Model Registration No. 2588401

したがって、従来からハウジング内における絶縁油の冷却効率を高めることが望まれている。 Therefore, it has been conventionally desired to increase the cooling efficiency of the insulating oil in the housing.

本発明の実施形態は、ハウジング内に充填された絶縁油の冷却効率を高めることができるＸ線管装置を提供する。 Embodiments of the present invention provide an X-ray tube apparatus that can increase the cooling efficiency of insulating oil filled in a housing.

一実施形態に係るＸ線管装置は、
熱電子を放出する陰極と、前記陰極から放出される電子が衝突することによりＸ線を放出する陽極と、前記陰極と前記陽極を収納する容器とを有するＸ線管と、
前記Ｘ線管を収納するハウジングと、
前記Ｘ線管と前記ハウジングとの間の空間に充填された絶縁油とを備え、
前記ハウジングの壁部には、前記絶縁油が流れる絶縁油通路が形成してある。 An X-ray tube apparatus according to one embodiment
An X-ray tube comprising: a cathode that emits thermoelectrons; an anode that emits X-rays when electrons emitted from the cathode collide; and a container that houses the cathode and the anode;
A housing for housing the X-ray tube;
An insulating oil filled in a space between the X-ray tube and the housing;
An insulating oil passage through which the insulating oil flows is formed in the wall portion of the housing.

図１は、第１実施の形態に係るＸ線管装置の概略的構成を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing a schematic configuration of the X-ray tube apparatus according to the first embodiment. 図２は、図１に示す端壁部を拡大して示す縦断面図である。FIG. 2 is a longitudinal sectional view showing the end wall portion shown in FIG. 1 in an enlarged manner. 図３は、図２に示す端壁部をハウジング内部から見た側面図である。FIG. 3 is a side view of the end wall portion shown in FIG. 2 as viewed from the inside of the housing. 図４は、図３に示すＢ−Ｂ断面図である。4 is a cross-sectional view taken along line BB shown in FIG. 図５は、図１に示すＸ線管の縦断面図である。FIG. 5 is a longitudinal sectional view of the X-ray tube shown in FIG. 図６は、第２実施の形態に係るＸ線管装置の端壁部をハウジングの内部側から見た側面図である。FIG. 6 is a side view of the end wall portion of the X-ray tube apparatus according to the second embodiment viewed from the inside of the housing. 図７は、第３実施の形態に係るＸ線管装置の端壁部をハウジングの内部側から見た側面図である。FIG. 7 is a side view of the end wall portion of the X-ray tube apparatus according to the third embodiment as viewed from the inside of the housing. 図８は、第４実施の形態に係るＸ線管装置の端壁部をハウジングの内部側から見た側面図である。FIG. 8 is a side view of the end wall portion of the X-ray tube apparatus according to the fourth embodiment as viewed from the inside of the housing.

以下に、図面を参照しながら、各実施の形態に係るＸ線管装置について詳細に説明する。なお、図面は、説明をより明確にするため、実際の態様に比べて、各部の幅、厚さ、形状等について模式的に表される場合があるが、あくまで一例であって、本発明の解釈を限定するものではない。また、本明細書と各図において、既出の図に関して前述したものと同一又は類似した機能を発揮する構成要素には同一の参照符号を付し、重複する詳細な説明を適宜省略することがある。 The X-ray tube apparatus according to each embodiment will be described in detail below with reference to the drawings. In addition, although the drawings may be schematically represented with respect to the width, thickness, shape, and the like of each part as compared with the actual mode for clarity of explanation, they are merely examples, and The interpretation is not limited. In addition, in the present specification and each drawing, components that perform the same or similar functions as those described above with reference to the previous drawings are denoted by the same reference numerals, and repeated detailed description may be omitted as appropriate. .

（第１実施の形態）
まず、図１〜図５を参照して、第１実施の形態に係るＸ線管装置１について説明する。 (First embodiment)
First, the X-ray tube apparatus 1 according to the first embodiment will be described with reference to FIGS.

図１に示すように、Ｘ線管装置１は、ハウジング３と、ハウジング内に収納されたＸ線管５と、ハウジングとＸ線管５との間の空間に充填された絶縁油７とを備えている。 As shown in FIG. 1, the X-ray tube device 1 includes a housing 3, an X-ray tube 5 accommodated in the housing, and an insulating oil 7 filled in a space between the housing and the X-ray tube 5. I have.

ハウジング３は、円筒形状のハウジング本体９と、ハウジング本体９を形成する円筒部の一端側に設けた端壁部１１と、円筒部の他端側に設けた内圧調整部１３とを備えている。端壁部１１及び内圧調整部１３は側面視円盤状を成している。 The housing 3 includes a cylindrical housing main body 9, an end wall portion 11 provided on one end side of the cylindrical portion forming the housing main body 9, and an internal pressure adjusting portion 13 provided on the other end side of the cylindrical portion. . The end wall portion 11 and the internal pressure adjusting portion 13 are disk-shaped when viewed from the side.

ハウジング本体９には、Ｘ線管５に高電圧を印加する高電圧用接続端子部（リセプタクル）１５が取り付けられており、高電圧用接続端子部１５はケーブル１７によりＸ線管５の高電圧端子１９に接続されている。 A high voltage connection terminal (receptacle) 15 for applying a high voltage to the X-ray tube 5 is attached to the housing body 9. The high voltage connection terminal 15 is connected to the high voltage of the X-ray tube 5 by a cable 17. It is connected to the terminal 19.

尚、ハウジング本体９には、Ｘ線透過領域Ｒに対応してＸ線放射窓１６が形成されている。 The housing body 9 is formed with an X-ray emission window 16 corresponding to the X-ray transmission region R.

ハウジング３の端壁部１１は、ゴム部材からなるＯリング２１を介してハウジング本体９に取り付けてあり、ハウジング本体９にＣ形止め輪２３を嵌合して固定されている。 The end wall portion 11 of the housing 3 is attached to the housing main body 9 via an O-ring 21 made of a rubber member, and a C-shaped retaining ring 23 is fitted and fixed to the housing main body 9.

この端壁部１１には、低電圧接続端子部２５が取り付けられる取り付け穴２６が形成されており、低電圧接続端子部２５は取り付け穴２６に挿入されてねじ２９で端壁部１１に固定されている。低電圧接続端子部２５はケーブル３１により、ステータコイル３３に接続されている。ステータコイル３３は、電力が供給されることにより、磁界を発生して、後述する陽極ターゲット３５を所定の速度で回転させるものである。 An attachment hole 26 to which the low voltage connection terminal portion 25 is attached is formed in the end wall portion 11. The low voltage connection terminal portion 25 is inserted into the attachment hole 26 and fixed to the end wall portion 11 with a screw 29. ing. The low voltage connection terminal portion 25 is connected to the stator coil 33 by a cable 31. The stator coil 33 generates a magnetic field when electric power is supplied, and rotates an anode target 35 described later at a predetermined speed.

端壁部１１には、ハウジング３内の絶縁油７が流れる絶縁油通路２７が形成されている。ここで図２〜図４を参照して、端壁部１１の構造について説明する。 An insulating oil passage 27 through which the insulating oil 7 in the housing 3 flows is formed in the end wall portion 11. Here, the structure of the end wall portion 11 will be described with reference to FIGS.

図２及び図４に示すように、端壁部１１はハウジング３の外側に位置する一側部材１１ａと、ハウジング３の内側に位置する他側部材１１ｂとを備えており、一側部材１１ａと他側部材１１ｂとは対向する面を重ねてねじ３７で固定されている。 As shown in FIGS. 2 and 4, the end wall portion 11 includes one side member 11 a located outside the housing 3, and another side member 11 b located inside the housing 3, and the one side member 11 a The surface facing the other side member 11b is overlapped and fixed with a screw 37.

図４に示すように、一側部材１１ａには、上下方向に直線状に複数の溝３９が形成されており、壁部３９ａの突出端３９ｂに重ねて溝３９の開口を閉じるように他側部材１１ｂを重ねて固定してある。他側部材１１ｂは平板状であり、溝３９の開口を閉じることで端壁部１１の内部に絶縁油通路２７を形成している。 As shown in FIG. 4, the one side member 11a is formed with a plurality of grooves 39 linearly in the vertical direction, and overlaps the protruding end 39b of the wall 39a so as to close the opening of the groove 39. The member 11b is overlapped and fixed. The other side member 11 b has a flat plate shape, and the insulating oil passage 27 is formed inside the end wall portion 11 by closing the opening of the groove 39.

図２及び図３に示すように、他側部材１１ｂには、溝３９に連通する開口４１が形成されている。開口４１は一つの絶縁油通路２７に対してその上下に１箇所ずつ形成されている。 As shown in FIGS. 2 and 3, an opening 41 communicating with the groove 39 is formed in the other side member 11 b. One opening 41 is formed above and below one insulating oil passage 27.

また、図３に示すように、絶縁油通路２７は、低電圧接続端子部２５を回避した位置に設けてある。 In addition, as shown in FIG. 3, the insulating oil passage 27 is provided at a position where the low voltage connection terminal portion 25 is avoided.

図１に示すように、内圧調整部１３は、ダイヤフラム６５と、ダイヤフラム６５により区画された大気圧室６７と、圧力調整室６９とを備え、圧力調整室６９は絶縁油連通穴７１によりハウジング本体９内に充填された絶縁油７が通過可能にしてあり、ハウジング本体９内の急激な圧力変動を調整している。ダイヤフラム６５はゴムベローズである。大気圧室６７は通気穴７３により空気が出入り可能な構成にしてある。 As shown in FIG. 1, the internal pressure adjusting unit 13 includes a diaphragm 65, an atmospheric pressure chamber 67 partitioned by the diaphragm 65, and a pressure adjusting chamber 69, and the pressure adjusting chamber 69 is formed by an insulating oil communication hole 71. The insulating oil 7 filled in 9 is allowed to pass through, and a sudden pressure fluctuation in the housing body 9 is adjusted. The diaphragm 65 is a rubber bellows. The atmospheric pressure chamber 67 is configured to allow air to enter and exit through the vent hole 73.

ここでＸ線管５について説明する。図５に示すように、Ｘ線管５は、真空外囲器４５と、真空外囲器内に配置された固定軸４７と、固定軸４７に対して回転する回転体４９と、ロータ５１と、固定軸４７に対して回転体４９を支持する支持部５３とを備え、回転体４９には傘状の陽極ターゲット５５が設けてある。陽極ターゲット５５にはターゲット層５５ａが形成されている。 Here, the X-ray tube 5 will be described. As shown in FIG. 5, the X-ray tube 5 includes a vacuum envelope 45, a fixed shaft 47 disposed in the vacuum envelope, a rotating body 49 that rotates with respect to the fixed shaft 47, and a rotor 51. And a support 53 that supports the rotating body 49 with respect to the fixed shaft 47, and the rotating body 49 is provided with an umbrella-shaped anode target 55. A target layer 55 a is formed on the anode target 55.

一方、真空外囲器４５内には、陽極ターゲット５５に対向する側に陰極５７が設けてあり、陰極５７は陰極支持部材５９に支持されており、陰極５７には高電子供給端子６１が接続されている。 On the other hand, in the vacuum envelope 45, a cathode 57 is provided on the side facing the anode target 55, the cathode 57 is supported by a cathode support member 59, and a high electron supply terminal 61 is connected to the cathode 57. Has been.

次に、第１実施の形態に係るＸ線管装置１の作用及び効果について説明する。 Next, the operation and effect of the X-ray tube apparatus 1 according to the first embodiment will be described.

図１に示すように、Ｘ線管５により発生した熱は、真空外囲器４５（図５参照）を介してハウジング３内の絶縁油７に伝導され、絶縁油７の温度が高くなると、ハウジング３内で温度差による絶縁油７の自然対流が生じる。この絶縁油７の対流により絶縁油７の熱がハウジング３に伝達され、ハウジング３の熱は外部に放出されることで、絶縁油７が冷却される。一方、ハウジング３は、強度確保のために所定の厚みを有しており、この厚みが熱伝導の障害となるおそれがある。 As shown in FIG. 1, the heat generated by the X-ray tube 5 is conducted to the insulating oil 7 in the housing 3 through the vacuum envelope 45 (see FIG. 5), and when the temperature of the insulating oil 7 increases, Natural convection of the insulating oil 7 occurs due to a temperature difference in the housing 3. The heat of the insulating oil 7 is transmitted to the housing 3 by the convection of the insulating oil 7, and the heat of the housing 3 is released to the outside, whereby the insulating oil 7 is cooled. On the other hand, the housing 3 has a predetermined thickness for ensuring the strength, and this thickness may be an obstacle to heat conduction.

しかし、図２及び図４に示すように、ハウジング３の端壁部１１では、その内部に絶縁油通路２７が形成されており、絶縁油通路２７が形成されている通路底壁の厚みＷ１が端壁部１１全体の厚みＷ０よりも小さくなっているので、その分、端壁部１１では熱伝導を高めることができる。これにより、ハウジング３から外部に放出する熱量を多くすることができる。このように、ハウジング３から外部に放出する熱量を多くして、冷却効率を上げることで、絶縁油７の熱膨張によるハウジング３の圧力破損を防止できると共にＸ線管５の稼働制限（ばく射スループットの制限）を低下できるので、Ｘ線管装置１による診断効率を高めることができる。 However, as shown in FIGS. 2 and 4, in the end wall portion 11 of the housing 3, an insulating oil passage 27 is formed therein, and the thickness W1 of the passage bottom wall in which the insulating oil passage 27 is formed is Since it is smaller than the thickness W0 of the whole end wall part 11, the end wall part 11 can increase heat conduction accordingly. Thereby, the quantity of heat released from the housing 3 to the outside can be increased. In this way, by increasing the amount of heat released from the housing 3 to increase the cooling efficiency, it is possible to prevent pressure damage of the housing 3 due to thermal expansion of the insulating oil 7 and to restrict the operation of the X-ray tube 5 (radiation). Throughput limit) can be reduced, so that the diagnostic efficiency of the X-ray tube apparatus 1 can be increased.

また、図４に示すように、端壁部１１では、絶縁油通路２７を形成する壁部３９ａが実質的に端壁部１１全体の厚みＷ０を維持しているので、端壁部１１の強度の低下を防止できる。 Further, as shown in FIG. 4, in the end wall portion 11, the wall portion 39 a that forms the insulating oil passage 27 substantially maintains the thickness W <b> 0 of the entire end wall portion 11. Can be prevented.

図２に示すように、絶縁油通路２７では絶縁油が常時一定の方向に流れる（例えば、下から上に流れる）ので、ハウジング３内における絶縁油７の対流がスムーズにでき、絶縁油７の対流を促進してハウジング３に伝導する熱量を高めることができる。 As shown in FIG. 2, since the insulating oil always flows in a constant direction (for example, flows from the bottom to the top) in the insulating oil passage 27, the convection of the insulating oil 7 in the housing 3 can be smoothly performed. The amount of heat conducted to the housing 3 can be increased by promoting convection.

図４に示すように、端壁部１１に形成する絶縁油通路２７は、端壁部１１を構成する一側部材１１ａに溝３９を形成して、一側部材１１ａに他側部材１１ｂを重ねて固定するだけであるから、絶縁油通路２７の形成が容易にできる。 As shown in FIG. 4, the insulating oil passage 27 formed in the end wall portion 11 has a groove 39 formed in the one side member 11 a constituting the end wall portion 11, and the other side member 11 b is overlapped on the one side member 11 a. Therefore, the insulating oil passage 27 can be easily formed.

端壁部１１の絶縁油通路２７は、一側部材１１ａに溝３９を形成することで、通路を形成にできるので、溝３９の形状や寸法の自由度が高く、例えば、直線状に限らず、湾曲状としたり、蛇行したり、クランク状の加工が容易にできる。 Since the insulating oil passage 27 of the end wall portion 11 can be formed by forming the groove 39 in the one side member 11a, the degree of freedom of the shape and dimensions of the groove 39 is high. It can be easily bent, meandered or cranked.

本実施の形態では、端壁部１１に設けてある低電圧接続端子部２５を避けて絶縁油通路２７を形成しているので、低電圧接続端子部２５の取り付け位置を変更しないで済む。 In the present embodiment, since the insulating oil passage 27 is formed avoiding the low voltage connection terminal portion 25 provided in the end wall portion 11, it is not necessary to change the mounting position of the low voltage connection terminal portion 25.

以下に、他の実施の形態を説明するが、以下に説明する実施形態において、上述した一実施形態と同一の作用効果を奏する部分には同一の符号を付することによりその部分の詳細な説明を省略し、以下の説明では一実施形態と主に異なる点を説明する。 Other embodiments will be described below. In the embodiments described below, the same reference numerals are given to the portions having the same functions and effects as those of the above-described embodiment, and the detailed description of the portions will be given. In the following description, differences from the embodiment will be mainly described.

（第２実施の形態）
図６に第２実施の形態にかかるＸ線管装置１の端壁部１１を示す。この第２実施の形態の端壁部１１では、絶縁油通路２７を上下に湾曲した形状としてものを複数形成している。また、中央にある２つの絶縁油通路２７は、上下の各開口４１を共通にしていると共に低電圧接続端子部２５の周囲を囲むように形成している。 (Second Embodiment)
FIG. 6 shows an end wall portion 11 of the X-ray tube apparatus 1 according to the second embodiment. In the end wall portion 11 of the second embodiment, a plurality of insulating oil passages 27 are formed in a vertically curved shape. The two insulating oil passages 27 in the center are formed so as to surround the low voltage connection terminal portion 25 while sharing the upper and lower openings 41.

この第２実施の形態においても上述した第１実施の形態と同様の作用効果を奏することができる。 In the second embodiment, the same operational effects as those of the first embodiment described above can be obtained.

更に、第２実施の形態によれば、絶縁油通路２７を湾曲形状とすることにより、直線状に形成した場合よりも絶縁油通路２７の長さを長くでき、更に絶縁油７の冷却効率を高めることができる。 Furthermore, according to the second embodiment, by making the insulating oil passage 27 curved, the length of the insulating oil passage 27 can be made longer than when the insulating oil passage 27 is formed in a straight line, and the cooling efficiency of the insulating oil 7 is further improved. Can be increased.

（第３実施の形態）
図７に第３実施の形態に係るＸ線管装置１に用いられる端壁部１１を示す。この第３実施の形態にかかる端壁部１１では、絶縁油通路２７をクランク状に形成していると共に低電圧接続端子部２５を避けて囲むように形成している。 (Third embodiment)
FIG. 7 shows an end wall portion 11 used in the X-ray tube apparatus 1 according to the third embodiment. In the end wall portion 11 according to the third embodiment, the insulating oil passage 27 is formed in a crank shape and is formed so as to surround the low voltage connection terminal portion 25.

この第３実施の形態にかかるＸ線管装置１によれば、上述した第２実施の形態と同様の作用効果を奏することができる。 According to the X-ray tube apparatus 1 according to the third embodiment, the same operational effects as those of the second embodiment described above can be achieved.

（第４実施の形態）
図８に第４実施の形態に係るＸ線管装置１に用いられる端壁部１１を示す。この第４実施の形態の端壁部１１は、低電圧接続端子部２５を３つ設けてあり、第１実施の形態と同様に絶縁油通路２７を、３つの低電圧接続端子部２５を避けるようにして、複数個を直線状に形成している。 (Fourth embodiment)
FIG. 8 shows an end wall portion 11 used in the X-ray tube apparatus 1 according to the fourth embodiment. The end wall portion 11 of the fourth embodiment is provided with three low-voltage connection terminal portions 25, and avoids the insulating oil passage 27 and the three low-voltage connection terminal portions 25 as in the first embodiment. In this way, a plurality are formed linearly.

この第４実施の形態によれば、第１実施の形態と同様の作用効果を得ることができる。 According to the fourth embodiment, it is possible to obtain the same functions and effects as those of the first embodiment.

上述した一実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これらの新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これらの実施形態やその変形は、発明の範囲や要旨に含まれると共に、特許請求の範囲に記載された発明とその均等の範囲に含まれる。 The above-described embodiment has been presented as an example, and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

例えば、図１や図８に示すように、端壁部１１に設けてある低電圧接続端子部２５は、１つでも３つでも良いし、数や形状及び配置は制限されず、絶縁油通路２７は低電圧接続端子部２５やその他の障害部材がある場合にはその障害部材を避けて形成するものであれば良い。 For example, as shown in FIGS. 1 and 8, the number of low voltage connection terminal portions 25 provided on the end wall portion 11 may be one or three, and the number, shape, and arrangement are not limited, and the insulating oil passage In the case where there is a low-voltage connecting terminal portion 25 or other obstacle member, 27 may be formed so as to avoid the obstacle member.

Ｘ線管５は、回転陽極Ｘ線管に限らず、固定陽極Ｘ線管であっても良い。 The X-ray tube 5 is not limited to a rotating anode X-ray tube, but may be a fixed anode X-ray tube.

絶縁油通路２７は、ハウジング３の端壁部１１に形成したが、ハウジング３を構成する壁部であれば、ハウジング本体９に形成してもよい。 The insulating oil passage 27 is formed in the end wall portion 11 of the housing 3, but may be formed in the housing main body 9 as long as it is a wall portion constituting the housing 3.

絶縁油通路２７は、上述した第１〜第４実施の形態に示す形状、本数や幅に限らず、例えば、Ｓ字形状に形成したり、通路幅の狭いものを多数形成しても良いし、通路幅の広いものを１つ又は２つ形成するものであって良い。 The insulating oil passage 27 is not limited to the shape, number, and width shown in the first to fourth embodiments described above, and may be formed in, for example, an S-shape or a plurality of narrow passage widths. One or two wide passages may be formed.

端壁部１１を構成する一側部材１１ａと他側部材１１ｂとはねじ３７で固定することに限らず、溶接等により固定しても良い。 The one side member 11a and the other side member 11b constituting the end wall portion 11 are not limited to being fixed by the screw 37 but may be fixed by welding or the like.

１…Ｘ線管装置、３…ハウジング、５…Ｘ線管、１１…端壁部（壁部）、１１ａ…一側部材、１１ｂ…他側部材、２５…低電圧接続端子（端子部材）、２７…絶縁油通路、２７…絶縁油通路、３９…溝、４１…開口、４５…容器（真空外囲器）、５５…陽極ターゲット（陽極）、５７…陰極。 DESCRIPTION OF SYMBOLS 1 ... X-ray tube apparatus, 3 ... Housing, 5 ... X-ray tube, 11 ... End wall part (wall part), 11a ... One side member, 11b ... Other side member, 25 ... Low voltage connection terminal (terminal member), 27 ... Insulating oil passage, 27 ... Insulating oil passage, 39 ... Groove, 41 ... Opening, 45 ... Container (vacuum envelope), 55 ... Anode target (anode), 57 ... Cathode.

Claims

An X-ray tube comprising: a cathode that emits thermoelectrons; an anode that emits X-rays when electrons emitted from the cathode collide; and a container that houses the cathode and the anode;
A housing for housing the X-ray tube;
An insulating oil filled in a space between the X-ray tube and the housing;
An X-ray tube device in which an insulating oil passage through which the insulating oil flows is formed in a wall portion of the housing.

The X-ray tube apparatus according to claim 1, wherein the housing has a cylindrical portion and an end wall portion that closes an opening of the cylindrical portion, and the insulating oil passage is formed in the end wall portion.

The end wall portion is fixed by being overlapped with the one side member formed with a groove forming the insulating oil passage and the one side member, and closes the opening of the groove formed in the one side member. The X-ray tube apparatus according to claim 1, further comprising: an other side member having an opening communicating with the groove.

The X-ray tube apparatus according to claim 3, wherein the insulating oil passage is formed in a vertical direction and the opening is formed at an upper end portion and a lower end portion of the insulating oil passage.

The X-ray tube apparatus according to claim 4, wherein the end wall portion includes a terminal member, and the insulating oil passage is formed avoiding the terminal member.

The X-ray tube apparatus according to claim 4 or 5, wherein the insulating oil passage is linear.

The X-ray tube apparatus according to claim 4 or 5, wherein the insulating oil passage is curved between the opening provided at the upper end and the opening provided at the lower end.

The X-ray tube apparatus according to claim 4 or 5, wherein the insulating oil passage meanders between the opening provided at the upper end and the opening provided at the lower end.