JP2008098072A - High-voltage generator - Google Patents

High-voltage generator Download PDF

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JP2008098072A
JP2008098072A JP2006280986A JP2006280986A JP2008098072A JP 2008098072 A JP2008098072 A JP 2008098072A JP 2006280986 A JP2006280986 A JP 2006280986A JP 2006280986 A JP2006280986 A JP 2006280986A JP 2008098072 A JP2008098072 A JP 2008098072A
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high voltage
voltage
circuit
transformer
connector
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JP5335185B2 (en
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Toranosuke Takeuchi
虎之介 竹内
Susumu Shimada
進 嶋田
Jun Takahashi
順 高橋
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Hitachi Healthcare Manufacturing Ltd
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Hitachi Medical Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a high voltage generator capable of space-saving as a whole of components. <P>SOLUTION: A high voltage transformer 2, high voltage rectification circuits 4a, 4b, and high voltage connectors 9a, 9b are arranged on vertically one side in a high voltage tank 8, and high voltage switch circuits 6a, 6b and high voltage discharge circuits 5a, 5b are arranged on the opposite side of these. The high voltage transformer 2 is arranged at the lower stage with the center axis of windings facing vertical direction and the high voltage rectification circuits 4a, 4b are arranged at middle stage, and the high voltage connectors 9a, 9b are arranged at the upper stage. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明はパルスX線透視撮影を行うX線装置に電力を供給する高電圧発生装置に関する。   The present invention relates to a high-voltage generator that supplies power to an X-ray apparatus that performs pulse X-ray fluoroscopy.

2極型X線管には波尾遮断回路と呼ばれる回路がX線管に並列接続されている。波尾遮断回路は、X線管への電力が停止されたとき、直ちにX線管を電位零にして被検体への無効被曝を防ぐものである。この波尾遮断回路は多段の直列スイッチで構成されており、それらの直列スイッチの収容に様々な工夫がなされている。(例えば、特許文献1)
特開2001-284097号公報
In the bipolar X-ray tube, a circuit called a wave tail cutoff circuit is connected in parallel to the X-ray tube. The wave tail cut-off circuit sets the potential of the X-ray tube to zero immediately when the power to the X-ray tube is stopped to prevent invalid exposure to the subject. This wave tail cut-off circuit is composed of multi-stage series switches, and various devices have been made to accommodate these series switches. (For example, Patent Document 1)
JP 2001-284097

しかしながら、高電圧発生装置はX線高電圧装置としてX線制御装置と高電圧発生装置が一体になっており、波尾切断回路を含めた高電圧発生装置全体として省スペース化するニーズが高まってきた。   However, the high-voltage generator is an X-ray high-voltage device, and the X-ray control device and the high-voltage generator are integrated, and there is an increasing need for space saving as a whole high-voltage generator including the wave tail cutting circuit. It was.

本発明の目的は、各構成要素全体として省スペース化が可能な高電圧発生装置を提供することにある。   An object of the present invention is to provide a high voltage generator capable of saving space as a whole of each component.

上記目的は、商用電源を直流に整流しその整流された直流をさらに 高周波交流電源に変換するインバータと、このインバータの出力を低圧から高圧へ昇圧する高電圧変圧器と、この高電圧変圧器によって昇圧された高圧高周波交流を整流する高電圧整流回路と、この高電圧整流回路の正極及び負極をX線管に接続するための高電圧ケーブル及び高電圧コネクタと、前記X線管と並列接続され高電圧スイッチ回路と放電回路からなり前記X線管の電源供給停止時に前記高電圧コネクタに接続される高電圧ケーブルの浮遊容量に残った電荷を放電する波尾遮断回路と、を備えた高電圧発生装置において、前記高電圧変圧器、高電圧整流回路及び高電圧コネクタを一端に配置し、前記波尾切断回路を他端に配置する一の筐体を備えたことで達成される。   The purpose is to rectify commercial power into direct current and convert the rectified direct current into high frequency alternating current power, a high voltage transformer that boosts the output of this inverter from low voltage to high voltage, and this high voltage transformer. A high-voltage rectifier circuit for rectifying the boosted high-frequency high-frequency alternating current, a high-voltage cable and a high-voltage connector for connecting the positive electrode and the negative electrode of the high-voltage rectifier circuit to the X-ray tube, and the X-ray tube connected in parallel A high voltage switch circuit and a discharge circuit, and a wave tail cutoff circuit that discharges the charge remaining in the stray capacitance of the high voltage cable connected to the high voltage connector when power supply to the X-ray tube is stopped. In the generator, the high-voltage transformer, the high-voltage rectifier circuit, and the high-voltage connector are arranged at one end, and the housing is provided with one casing in which the wave-tail cutting circuit is arranged at the other end.

本発明によれば、各構成要素全体として省スペース化が可能な高電圧発生装置を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the high voltage generator which can save space as each whole component can be provided.

以下、本発明の実施の形態について図を用いて説明する。図1に本発明の波尾遮断回路を利用する高電圧発生装置の全体構成図を示す。図1のように高周波電圧を作り出すインバータ回路1、インバータ回路1に接続される一次巻線及び高電圧整流回路側に接続される二次巻線から構成される高電圧変圧器2、高電圧変圧器2から昇圧された高周波電圧を直流に変換する為の高電圧整流回路4a,4b、高電圧整流回路4a,4bに接続された高電圧放電回路5a,5bおよび高電圧スイッチング回路6a,6bから構成される波尾遮断回路、波尾遮断回路から接続されるX線管装置7により管電圧の立ち下がりを高速にできるパルス透視撮影が構成される。波尾遮断回路は、パルス透視撮影における立ち下がりに同期した制御信号を高電圧スイッチ回路に送信することにより、高電圧ケーブルの浮遊容量とX線管装置の負荷抵抗から成る時定数から高電圧スイッチ回路内のコンデンサと放電回路の抵抗分から成るより短い時定数に瞬時に切り替わり、管電圧の立ち下がりを高速にし、波尾の少ないパルス透視撮影を行うことが出来る。高電圧変圧器2、加熱変圧器3、高電圧整流回路(カソード側)4a、高電圧整流回路(アノード側)4b、放電回路(カソード側)5a、高電圧放電回路(アノード側)5b、高電圧スイッチ回路(カソード側)6a、高電圧スイッチ回路(アノード側)6bは絶縁油が封入された高電圧タンク8内に実装される。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an overall configuration diagram of a high voltage generator using a wave tail cutoff circuit of the present invention. As shown in FIG. 1, an inverter circuit 1 that generates a high-frequency voltage, a primary winding connected to the inverter circuit 1 and a secondary winding connected to the high-voltage rectifier circuit side, a high-voltage transformer From the high voltage rectifier circuits 4a and 4b for converting the high-frequency voltage boosted from the capacitor 2 into direct current, the high voltage discharge circuits 5a and 5b connected to the high voltage rectifier circuits 4a and 4b, and the high voltage switching circuits 6a and 6b The pulse tail fluoroscopy which can make the fall of a tube voltage fast is comprised by the X-ray tube apparatus 7 connected from the wave tail cutoff circuit comprised and the wave tail cutoff circuit. The wave tail cut-off circuit sends a control signal synchronized with the fall in pulse fluoroscopy to the high-voltage switch circuit, so that the high-voltage switch from the time constant consisting of the stray capacitance of the high-voltage cable and the load resistance of the X-ray tube device It is possible to instantaneously switch to a shorter time constant consisting of the capacitor in the circuit and the resistance of the discharge circuit, to make the fall of the tube voltage faster, and to perform pulse fluoroscopic imaging with less wave tail. High-voltage transformer 2, heating transformer 3, high-voltage rectifier circuit (cathode side) 4a, high-voltage rectifier circuit (anode side) 4b, discharge circuit (cathode side) 5a, high-voltage discharge circuit (anode side) 5b, high The voltage switch circuit (cathode side) 6a and the high voltage switch circuit (anode side) 6b are mounted in a high voltage tank 8 filled with insulating oil.

本発明を利用する高電圧スイッチ回路および高電圧放電回路から構成される波尾遮断 回路の実装形式を図2に示す。高電圧スイッチ回路は電力用半導体スイッチング素子を複数直列接続した状態で実装された高電圧スイッチ基板6cを管電圧に対して電気的絶縁を確保する為に複数枚、素子が直列接続になるように接続線17などで接続する。高電圧スイッチ基板6cは図2に示すように収納用固定具10に入れる。収納用固定具10は絶縁材料で出来ており、積み重ねられる構造となっている。積み重ねることにより、収納されている高電圧スイッチ基板6c上下に一定間隔で絶縁距離15を設けることが出来る。また、収納用固定具10に仕切り板のようなものが3枚備わっており、積み重ねたときに高電圧放電回路5a,5bを収納出来るスペース16が備わり、高電圧放電回路5a,5bを固定、外部との絶縁機能が備わる。またこのスペース16の容積は放電回路5a,5bを実装しても、波尾遮断回路駆動時における高電圧放電回路5a,5bの発熱に対しても充分に熱が自然対流し冷却し易い大きさとする。この収納用固定具10よって、別々に回路を実装する必要がなくなり、作業工数を低減できる。   FIG. 2 shows a mounting form of a wave tail cut-off circuit composed of a high voltage switch circuit and a high voltage discharge circuit using the present invention. The high-voltage switch circuit has a plurality of high-voltage switch substrates 6c mounted in a state where a plurality of power semiconductor switching elements are connected in series so that the elements are connected in series in order to ensure electrical insulation against the tube voltage. Connect with connection line 17 etc. The high voltage switch board 6c is placed in the storage fixture 10 as shown in FIG. The storage fixture 10 is made of an insulating material and is stacked. By stacking, the insulation distance 15 can be provided at regular intervals above and below the stored high voltage switch substrate 6c. In addition, the storage fixture 10 is provided with three pieces like a partition plate, and is provided with a space 16 in which the high voltage discharge circuits 5a and 5b can be stored when stacked, fixing the high voltage discharge circuits 5a and 5b, Insulation function from outside. In addition, the volume of the space 16 is such that even if the discharge circuits 5a and 5b are mounted, the heat naturally convects and cools easily even for the heat generation of the high voltage discharge circuits 5a and 5b when the wave tail circuit is driven. To do. The storage fixture 10 eliminates the need for separately mounting a circuit, thereby reducing the work man-hours.

図3に高電圧スイッチ基板6cを積層にした場合の基板同士の接続について示す。基板同士の接続は基板を上下交互に180°ずつ回転させて接続線が交差しないようにする。また基板の上下で絶縁距離15を設けなければならないが、前記収納用固定具10の積み重ね方向の幅で充分な距離を設けることが出来る。   FIG. 3 shows the connection between the substrates when the high-voltage switch substrate 6c is laminated. The connections between the boards are made by rotating the boards alternately up and down by 180 ° so that the connection lines do not cross each other. Further, the insulation distance 15 must be provided above and below the substrate, but a sufficient distance can be provided by the width of the storage fixture 10 in the stacking direction.

本発明における波尾遮断回路を接続した高電圧発生装置の実装形式を図4に示す。ここでは高電圧変圧器2、加熱変圧器3、高電圧整流回路(カソード側)4a、高電圧整流回路(アノード側)4b、放電回路(カソード側)5a、放電回路(アノード側)5b、高電圧スイッチ回路(カソード側)6a、高電圧スイッチ回路(アノード側)6b、高電圧コネクタ(カソード側)9a、高電圧コネクタ(アノード側)9bは絶縁油が封入された高電圧タンク8内に実装される。本実施例では手前側に下段から高電圧変圧器2、中段に高電圧整流回路(カソード側)4a、高電圧整流回路(アノード側)4b、上段に高電圧コネクタ(カソード側)9a、高電圧コネクタ(アノード側)9b及び、加熱変圧器3に接続・実装している。奥側には高電圧スイッチ回路(カソード側)6a、高電圧スイッチ回路(アノード側)6bを収納用固定具10に入れ、管電圧による電気的絶縁の確保のために多段に積み重ねることにより前記図2のようなタワー状に構成される。高電圧スイッチ回路(カソード側)6a、高電圧スイッチ回路(アノード側)6bの上段より高電圧コネクタ(カソード側)9a、高電圧コネクタ(アノード側)9bに接続することにより、図1の回路構成からなる波尾遮断回路を接続した高電圧発生装置を提供できる。電気的な絶縁設計に関しては高電圧変圧器2の一次巻線などのアース電位に近い電気部品は下段に配置し、上段に行くに従って電位の高い部品を配置する。また、高電圧スイッチ回路については積層された基板の最下段(高電圧タンク底面側)をアース電位として接続し、最上段をアノードあるいはカソードの高電位部分として高電圧コネクタ(カソード側)9a、高電圧コネクタ(アノード側)9bにそれぞれ接続することにより、手前側高電圧発生回路および奥側波尾遮断回路の等電位部分が隣接する配置となるので、絶縁部品追加による無駄な絶縁設計をせずに済む。アノード・カソード間電位(最大150kV)による絶縁距離13a及び、高電圧タンク8による対アース電位(最大75kV or −75kV)の絶縁距離13bに関しては絶縁油に対しては距離を充分に取る必要がある。絶縁距離13a,13bを取れば取るほど、絶縁設計が容易になり熱対流による冷却性は良くなるが、その分高電圧タンク8の容積が大きくなり高電圧発生装置自体が大型化する。   FIG. 4 shows a mounting form of the high voltage generator to which the wave tail cutoff circuit according to the present invention is connected. Here, high voltage transformer 2, heating transformer 3, high voltage rectifier circuit (cathode side) 4a, high voltage rectifier circuit (anode side) 4b, discharge circuit (cathode side) 5a, discharge circuit (anode side) 5b, high The voltage switch circuit (cathode side) 6a, the high voltage switch circuit (anode side) 6b, the high voltage connector (cathode side) 9a, and the high voltage connector (anode side) 9b are mounted in a high voltage tank 8 filled with insulating oil. Is done. In this embodiment, high voltage transformer 2 from the lower stage on the front side, high voltage rectifier circuit (cathode side) 4a on the middle stage, high voltage rectifier circuit (anode side) 4b, high voltage connector (cathode side) 9a on the upper stage, high voltage Connected to and mounted on the connector (anode side) 9b and the heating transformer 3. In the back side, the high voltage switch circuit (cathode side) 6a and the high voltage switch circuit (anode side) 6b are placed in the storage fixture 10, and stacked in multiple stages to ensure electrical insulation by tube voltage. It is configured like a tower like 2. The circuit configuration of Fig. 1 is established by connecting the high voltage switch circuit (cathode side) 6a and the high voltage switch circuit (anode side) 6b to the high voltage connector (cathode side) 9a and the high voltage connector (anode side) 9b. It is possible to provide a high voltage generator to which a wave tail cutoff circuit consisting of Regarding the electrical insulation design, electrical components close to the ground potential such as the primary winding of the high-voltage transformer 2 are arranged in the lower stage, and components having higher potential are arranged in the upper stage. For the high-voltage switch circuit, the bottom layer of the stacked substrates (the bottom side of the high-voltage tank) is connected as the ground potential, and the top layer is connected to the high-potential portion of the anode or cathode as the high-voltage connector (cathode side) 9a. By connecting each to the voltage connector (anode side) 9b, the equipotential part of the front high voltage generation circuit and the back side wave tail cutoff circuit are placed adjacent to each other, eliminating unnecessary design of insulation by adding insulation parts It will end. With regard to the insulation distance 13a due to the anode-cathode potential (maximum 150 kV) and the insulation distance 13 b with respect to the ground potential (maximum 75 kV or −75 kV) due to the high-voltage tank 8, it is necessary to provide sufficient distance for the insulating oil. . The longer the insulation distances 13a and 13b are taken, the easier the insulation design and the better the cooling performance by thermal convection. However, the volume of the high-voltage tank 8 becomes larger and the high-voltage generator itself becomes larger.

図5は図4の配置と同様であるが、高電圧タンク8の小型化を目的とした実装の実施例である。前記で大型化してしまう主な原因は前記絶縁距離13a,13bである。絶縁距離13aは装置下段部分では低電圧あるいはアース電位に近い為、それほど距離を必要としないが、高電圧整流回路4a,4b、および高電圧スイッチ回路6a,6bの最上段部分のアノード・カソード間電位は最大で150kV掛かる為、それに応じた絶縁距離を設ける必要がある。また、高電位部分と高電圧タンク8による対アース電位に対する絶縁距離13bは絶縁距離13aのおよそ半分の距離で済むが、構成された電気部品の周囲に展開するため、さらにタンク容積を必要とする。そこで絶縁板11を図5のように配置することにより短い絶縁距離で電気的絶縁確保ができる。絶縁板11の面積は高電圧整流回路4a,4bより上部(高電圧スイッチ回路6a,6bも含む)の電気部品に対してカバーできるものとし、配線スペースを考慮して絶縁板よりある適当な絶縁距離をおいた位置に高電圧整流回路4a,4bおよび高電圧スイッチ回路6a,6b配置できるように絶縁材料の性能、厚みを選定する。これにより、小型化した高電圧発生装置を提供できる。   FIG. 5 is similar to the arrangement of FIG. 4, but is an embodiment of mounting for the purpose of reducing the size of the high voltage tank 8. The main cause of the increase in size is the insulation distances 13a and 13b. The insulation distance 13a does not require much distance because it is close to the low voltage or ground potential in the lower part of the device, but the distance between the anode and cathode of the uppermost part of the high voltage rectifier circuits 4a and 4b and the high voltage switch circuits 6a and 6b Since the electric potential takes up to 150kV, it is necessary to provide an insulation distance accordingly. In addition, the insulation distance 13b with respect to the ground potential by the high potential portion and the high voltage tank 8 may be about half the insulation distance 13a. However, in order to expand around the configured electrical parts, further tank volume is required. . Therefore, by arranging the insulating plate 11 as shown in FIG. 5, electrical insulation can be ensured with a short insulation distance. The area of the insulating plate 11 can cover electric parts above the high voltage rectifier circuits 4a and 4b (including the high voltage switch circuits 6a and 6b), and appropriate insulation from the insulating plate in consideration of the wiring space. The performance and thickness of the insulating material are selected so that the high voltage rectifier circuits 4a and 4b and the high voltage switch circuits 6a and 6b can be arranged at a distance. Thereby, a miniaturized high voltage generator can be provided.

図6は図5の配置と同様であるが、電気部品を囲うように絶縁体12を実装した実施例である。それにより対アース電位に対しての絶縁距離13bも縮めることができるため、電気部品周囲の容積も削減でき、図5よりさらに小型化を実現できる。   FIG. 6 is similar to the arrangement of FIG. 5, but is an embodiment in which an insulator 12 is mounted so as to surround an electrical component. As a result, the insulation distance 13b with respect to the ground potential can be shortened, so that the volume around the electrical component can be reduced, and further downsizing can be realized as compared with FIG.

図7は図5のタンク容積を変えずに高電圧コネクタ(カソード側)9a、高電圧コネクタ(アノード側)9b及び加熱変圧器3を横に、高電圧変圧器2を巻線の中心軸を垂直方向に向きを変えて実装した実施例である。パルス透視撮影に限らず長時間の曝射動作において、高電圧トランス内部の高電圧変圧器2より熱が発生する。そのため絶縁油を充分に対流させる工夫が必要となる。そこで、図5のように縦に配置していた高電圧コネクタ(カソード側)9a、高電圧コネクタ(アノード側)9b及び加熱変圧器3を横にして、高電圧発生装置の蓋に対して電気的絶縁を考慮した絶縁距離15まで上げて、その分余裕の出来た空間に対して高電圧整流回路4a,4bも同様に高電圧コネクタ(カソード側)9a、高電圧コネクタ(アノード側)9bと干渉しないように上部に移動する。残った下部の空間に高電圧変圧器2を巻線の中心軸を垂直方向に向きを変える。それにより一次巻線用のコイルと鉄心との上下に貫通した隙間17より発生した熱が上下方向に対流し易くなる。それにより図5に比べて高電圧変圧器2の冷却効率が向上されると共にタンク内部での対流が促進され、タンク内部の局所的な温度上昇を防ぐことができる。   FIG. 7 shows the high voltage connector (cathode side) 9a, the high voltage connector (anode side) 9b and the heating transformer 3 sideways without changing the tank volume of FIG. This is an embodiment in which the orientation is changed in the vertical direction. Heat is generated from the high-voltage transformer 2 inside the high-voltage transformer not only in the pulse radiography but also in the long-time exposure operation. Therefore, it is necessary to devise sufficient convection of the insulating oil. Therefore, as shown in FIG. 5, the high voltage connector (cathode side) 9a, the high voltage connector (anode side) 9b, and the heating transformer 3 that are arranged vertically are placed sideways and are electrically connected to the lid of the high voltage generator. For high-voltage rectifier circuits 4a and 4b, a high-voltage connector (cathode side) 9a, a high-voltage connector (anode side) 9b Move to the top to avoid interference. In the remaining lower space, the high voltage transformer 2 is turned in the vertical direction with respect to the central axis of the winding. As a result, the heat generated from the gap 17 penetrating vertically between the coil for the primary winding and the iron core is easily convected in the vertical direction. As a result, the cooling efficiency of the high voltage transformer 2 is improved as compared with FIG. 5, and convection inside the tank is promoted, so that a local temperature rise inside the tank can be prevented.

図8は図7の実装状態で、高電圧放電回路とその周辺の絶縁油を絶縁材料で囲うように実装した実施例である。視点は図7の反対方向である。高電圧放電回路の周辺を絶縁壁18で囲う。絶縁壁内部の面積は、図8の波尾遮断回路からはみ出ない広さとし、高さは図9のように収納用固定具10の仕切り板の根元から向かいのタンクの壁面まで接触する距離とする。それにより高電圧放電回路により熱せられた絶縁油を絶縁壁18の外に出さない閉鎖された空間19を設けることができる。熱せられた空間19内の絶縁油は図9のように空間19の向い側の壁面に放熱フィン20を設置することにより、放熱フィンの温度を高くして周囲環境温度との温度差を大きくできるため、タンク容積を増やすことなく効率的に冷却できる。また発熱による他の電気部品のダメージを軽減でき、装置の高信頼性にも繋がる。   FIG. 8 shows an embodiment in which the high voltage discharge circuit and the surrounding insulating oil are surrounded by an insulating material in the mounting state of FIG. The viewpoint is in the opposite direction of FIG. The periphery of the high voltage discharge circuit is surrounded by an insulating wall 18. The area inside the insulating wall is a width that does not protrude from the wave tail cutoff circuit of FIG. 8, and the height is the distance that contacts the wall of the tank opposite from the base of the partition plate of the storage fixture 10 as shown in FIG. . Thereby, it is possible to provide a closed space 19 in which the insulating oil heated by the high voltage discharge circuit does not go out of the insulating wall 18. As shown in Fig. 9, the insulating oil in the heated space 19 can be installed on the wall facing the space 19 to increase the temperature of the heat sink and increase the temperature difference from the ambient environment temperature. Therefore, it can cool efficiently, without increasing a tank volume. In addition, damage to other electrical components due to heat generation can be reduced, leading to high reliability of the apparatus.

本発明を利用する高電圧発生装置の全体回路を示す図。The figure which shows the whole circuit of the high voltage generator using this invention. 本発明を利用する波尾遮断回路の実装を示す図。The figure which shows the implementation of the wave tail cut-off circuit using this invention. 本発明を利用する高電圧スイッチ回路の接続を示す図。The figure which shows the connection of the high voltage switch circuit using this invention. 本実施形態の波尾遮断機能を有した高電圧発生装置における実施例1を示す図。The figure which shows Example 1 in the high voltage generator which has the wave tail interruption | blocking function of this embodiment. 本実施形態の波尾遮断機能を有した高電圧発生装置における実施例2を示す図。The figure which shows Example 2 in the high voltage generator which has the wave tail interruption | blocking function of this embodiment. 本実施形態の波尾遮断機能を有した高電圧発生装置における実施例3を示す図。The figure which shows Example 3 in the high voltage generator which has the wave tail interruption | blocking function of this embodiment. 本実施形態の波尾遮断機能を有した高電圧発生装置における実施例4を示す図。The figure which shows Example 4 in the high voltage generator which has the wave tail interruption | blocking function of this embodiment. 本実施形態の波尾遮断機能を有した高電圧発生装置における実施例5を示す図。The figure which shows Example 5 in the high voltage generator which has the wave tail interruption | blocking function of this embodiment. 図8で実施した構造の平面図。FIG. 9 is a plan view of the structure implemented in FIG.

符号の説明Explanation of symbols

1 インバータ回路、2 高電圧変圧器、3 加熱変圧器、4a,4b 高電圧整流回路、5a,5b 高電圧放電回路、6a,6b 高電圧スイッチ回路、6c 高電圧スイッチ基板、7 X線管装置、8 高電圧タンク 9a,9b 高電圧コネクタ、10 収納用固定具 11 絶縁板、12 絶縁体、13a,13b,15 絶縁距離、14 一次巻線用コイルと鉄心間の隙間、16 スペース、17 接続線、18 絶縁壁、19 閉鎖された空間、20 放熱フィン   1 Inverter circuit, 2 High voltage transformer, 3 Heating transformer, 4a, 4b High voltage rectifier circuit, 5a, 5b High voltage discharge circuit, 6a, 6b High voltage switch circuit, 6c High voltage switch board, 7 X-ray tube equipment , 8 High voltage tank 9a, 9b High voltage connector, 10 Storage fixture 11 Insulation plate, 12 Insulator, 13a, 13b, 15 Insulation distance, 14 Clearance between coil for primary winding and iron core, 16 space, 17 connection Wire, 18 insulation wall, 19 enclosed space, 20 heat dissipation fins

Claims (3)

商用電源を直流に整流しその整流された直流をさらに高周波交流電源に変換するインバータと、
このインバータの出力を低圧から高圧へ昇圧する高電圧変圧器と、
この高電圧変圧器によって昇圧された高圧高周波交流を整流する高電圧整流回路と、
この高電圧整流回路の正極及び負極をX線管に接続するための高電圧ケーブル及び高電圧コネクタと、
前記X線管と並列接続され高電圧スイッチ回路と放電回路からなり前記X線管の電源供給停止時に前記高電圧コネクタに接続される高電圧ケーブルの浮遊容量に残った電荷を放電する波尾遮断回路と、を備えた高電圧発生装置において、
前記高電圧変圧器、高電圧整流回路及び高電圧コネクタを一端に配置し、前記波尾切断回路を他端に配置する一の筐体を備えたことを特徴とした高電圧発生装置。
An inverter that rectifies commercial power into direct current and converts the rectified direct current into a high frequency alternating current power supply;
A high voltage transformer that boosts the output of this inverter from a low voltage to a high voltage;
A high-voltage rectifier circuit that rectifies high-voltage high-frequency alternating current boosted by the high-voltage transformer,
A high voltage cable and a high voltage connector for connecting the positive and negative electrodes of the high voltage rectifier circuit to the X-ray tube;
Wave tail cut-off that discharges the charge remaining in the stray capacitance of the high-voltage cable connected to the high-voltage connector when the power supply of the X-ray tube is stopped when the power supply of the X-ray tube is stopped. A high voltage generator comprising a circuit,
A high voltage generator comprising: a case in which the high voltage transformer, a high voltage rectifier circuit, and a high voltage connector are arranged at one end, and the wave tail cutting circuit is arranged at the other end.
前記一端への配置は、前記筐体の壁面から前記高電圧変圧器、前記高電圧整流回路、高電圧コネクタの順に配置されたことを特徴とした請求項1に記載の高電圧発生装置。   The high voltage generator according to claim 1, wherein the one end is arranged in the order of the high voltage transformer, the high voltage rectifier circuit, and the high voltage connector from the wall surface of the housing. 前記高電圧変圧器の巻線の中心軸が前記筐体に対して垂直方向に配置されることを特徴とする請求項1に記載の高電圧発生装置。   The high voltage generator according to claim 1, wherein a central axis of a winding of the high voltage transformer is arranged in a direction perpendicular to the casing.
JP2006280986A 2006-10-16 2006-10-16 High voltage generator Expired - Fee Related JP5335185B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012146530A (en) * 2011-01-12 2012-08-02 Hitachi Medical Corp X-ray high voltage generator and x-ray ct device
JP2017011964A (en) * 2015-06-26 2017-01-12 株式会社日立製作所 Power converter and wind power generation system

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62266810A (en) * 1986-05-15 1987-11-19 Fuji Electric Co Ltd Oil-immersed induction electric apparatus
JPH0410395A (en) * 1990-04-26 1992-01-14 Toshiba Corp X-ray high-voltage device
JPH08212948A (en) * 1995-02-02 1996-08-20 Origin Electric Co Ltd X-ray power unit
JPH10125492A (en) * 1996-10-24 1998-05-15 Hitachi Medical Corp Inverter type x-ray high voltage device
JPH11204290A (en) * 1998-01-13 1999-07-30 Hitachi Medical Corp Inverter type x-ray high-voltage device
JPH11329784A (en) * 1998-05-12 1999-11-30 Shimadzu Corp Inverter type x-ray high-voltage device
JP2000195697A (en) * 1998-12-22 2000-07-14 General Electric Co <Ge> X-ray beam control device for imaging device
JP2001284097A (en) * 2000-03-29 2001-10-12 Hitachi Medical Corp High voltage switching circuit and x-ray system using this circuit
JP2001319799A (en) * 2000-05-10 2001-11-16 Hitachi Medical Corp X-ray high voltage device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62266810A (en) * 1986-05-15 1987-11-19 Fuji Electric Co Ltd Oil-immersed induction electric apparatus
JPH0410395A (en) * 1990-04-26 1992-01-14 Toshiba Corp X-ray high-voltage device
JPH08212948A (en) * 1995-02-02 1996-08-20 Origin Electric Co Ltd X-ray power unit
JPH10125492A (en) * 1996-10-24 1998-05-15 Hitachi Medical Corp Inverter type x-ray high voltage device
JPH11204290A (en) * 1998-01-13 1999-07-30 Hitachi Medical Corp Inverter type x-ray high-voltage device
JPH11329784A (en) * 1998-05-12 1999-11-30 Shimadzu Corp Inverter type x-ray high-voltage device
JP2000195697A (en) * 1998-12-22 2000-07-14 General Electric Co <Ge> X-ray beam control device for imaging device
JP2001284097A (en) * 2000-03-29 2001-10-12 Hitachi Medical Corp High voltage switching circuit and x-ray system using this circuit
JP2001319799A (en) * 2000-05-10 2001-11-16 Hitachi Medical Corp X-ray high voltage device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012146530A (en) * 2011-01-12 2012-08-02 Hitachi Medical Corp X-ray high voltage generator and x-ray ct device
JP2017011964A (en) * 2015-06-26 2017-01-12 株式会社日立製作所 Power converter and wind power generation system

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