JPS58197698A - X-ray tube device - Google Patents

Abstract

PURPOSE:To make a fine diameter, single core high voltage cable usable as well as to simplify a supporting mechanism for an X-ray tube device and improve the operatability, by housing a filamentary heating transformer inside an X-ray tube bulb envelope. CONSTITUTION:A filamentary heating transformer 14 is housed inside an envelope 6 while a connector 16 of low tension, for example, AD 100V or 200V and a connector 29 for tube voltage, that is, single core high voltage are installed on the wall surface of the envelope, then via these elements, power is made so as to be fed to the said transformer and an X-ray tube bulb 13 respectively. With this constitution, a high voltage cable to be connected to an X-ray tube device fitted with a conventional built-in diode X-ray tube bulb 13, excluding a special tube such bulb as a triode bulb or a double focus tube bulb, etc., can be well turned to a slender cable whose conductor consists of a single core and whose outer diameter is below 10mm. and furthermore weight to be loaded on the X-ray tube device is sharply reduced whereby a supporting mechanism supporting the device slidably and rotatably and the structure of a swivel arm mechanism both are well simplified, so that not only the operatability is much improved but also expenses for the cable of an X-ray equipment can be yet more brought down.

Description

DETAILED DESCRIPTION OF THE INVENTION This @mei relates to improvements in oil-cooled X-ray tube devices for medical and industrial X-ray tubes.

Conventionally, the envelope (tube container) of general oil-cooled X-ray blue acid is
The wire tube is held in an insulating cylinder made of electrically insulating material,
Furthermore, if the X-ray emission window of the X-ray tube is closed, there will be no out-of-focus X-rays or unnecessary secondary radiation on the outer periphery or inside the tube! It is customary to have a lead plate attached to shield the X-ray tube from leaking to the outside, and to fill the tube with oil so that the X-ray tube is cooled by conduction and convection.

In this way, only the XIIM tube is housed, and depending on the type of X-ray device Fi
The X-ray beam 7L is slidably or rotatably supported on six different retainers and holding arms, and the position and angle of the phase S relative to the subject can be freely adjusted. Equipment X! ! The high voltage generator that generates the tube voltage, tube current, etc. of the tube and its control device are installed in a location away from, for example, the fluoroscopy stage where the XiIM tube device is installed, for example, in a corner of the room or in a separate room. It's cold. Therefore, a high voltage tf is applied from the high voltage generator to the tube of the X-ray tube device.
As the conductor for sending the IL, an electric shock-proof high-voltage cable is used, which is covered with thick rubber to prevent electric shock. This high-voltage cable carries the tube current and also supplies the heating current for the cathode filament, the grid potential in the case of a pentode X-rim tube, and the heating of the F12 filaments in a bifocal X-ray tube. etc. are necessary. Therefore, the standard fL specified in J-8C5407 for high voltage cables for X-rays is 4 conductors, of which 5 cores except one are connected to each other at an AC frequency of XV. Wrapped in rubber or vinyl insulation layer: r1. (The above one core remains a conductor), these three insulated wires are wrapped in a semiconducting layer, and then a thick high voltage insulator (such as rubber) is placed on top of that, and a metal braid is placed outside of this insulator ( By applying a shield) and grounding it together with one core of the above conductor, there is no shielding of the high voltage electric field9.
The outermost part has a vinyl or chloroprene sheath. Although this high-voltage cable for X-rays has 5 conductors as mentioned above, the withstand voltage between the conductors is #5XV, so L200KVK, which has a tube voltage of several tens of KV applied to the anode and cathode of an X-ray tube, can also be used. High voltage range←
)←) side, ('n) power is transmitted using one individual cable, and the filament heating current described above flows through the other two cores of the cable on the cathode side. However, due to the above-mentioned structure, the conventional multicore high voltage cable has a withstand voltage of 5QKVP-1'4, an outer diameter exceeding 75BOm,
15 (For Hvp, the outer diameter reaches 40!l1lK4. Not only does the weight become large, but there is also a restriction that it cannot be bent to an arc less than 15 times the outer diameter.For this reason, the above-mentioned large diameter and large weight There is a problem that the structure of the holding mechanism and flexible arm mechanism Fi, which connects two voltage cables to hold the 9X&lrt device and supports it while freely changing the relative position and angle to the subject, is complicated and difficult to manufacture. In addition, in the current situation where the distance between the tube device and the high voltage generator has been gradually increasing in recent years, the expensive multi-core high voltage cable is becoming a major hindrance to the efforts to make the X-ray device cheaper.

This invention has been devised in view of the above-mentioned current situation, and is intended to eliminate the drawbacks of the conventional X-ray tube apparatus using a multi-core cavity single-pressure couple. That is, in an apparatus in which a bipolar xWI tube is held within an envelope having an X-ray emission window via an electrically insulating member and is cooled by oil.

A wire heating transformer is provided in the envelope, and a low voltage, for example, 100V or 200V connector and a single-core high voltage, ie, tube voltage, connector are provided on the wall of the envelope, and the transformer is The present invention also relates to an X-ray tube device in which electric power is supplied to each of the X-ray tubes. With this VC configuration, the high voltage cable connected to the X1il tube device, which has a built-in general bipolar X-ray tube excluding special tubes such as triode tubes and bifocal tubes, has a single core conductor and is external to the cable. For example, the diameter is 10ff
By using the following thin cables, the weight placed on the X-ray tube device is significantly reduced, and the structure of the holding mechanism and flexible arm mechanism that slidably or rotatably support the X-ray tube device is simplified. It is an object of the present invention to provide a convenient device that can improve the operability and reduce the cable cost of the X-ray device.

The present invention will be explained in detail below with reference to the drawings. FIG. 1 is an external perspective view of an X-ray tube device (1) according to an embodiment of the present invention mounted on, for example, an overhead suspension system, and FIG. 2 is a cross-section taken along the line 1-1 in FIG. It is a plan sectional view (partially not cut). The lowermost square support frame (2) of the ceiling suspension (not shown) is mounted in the ceiling running direction, e.g.
) and can also move in the up and down direction arrow (b). An X-ray tube device support tube (4) is supported on a cylindrical frame (3) provided on this support frame (2) so as to be able to move 660 degrees in the direction of arrow (C). The ring (5) with Klf installed on a part of the circumference is KX as shown in Figure 2.
The peripheral edge ωR) of the ring support plate (8) fixed by several poles (7) K on the left end 7 lange (6y) of the wire tube envelope (6) and the lubricating synthetic resin slide plate (9 ), the envelope (6) can be tilted at any angle from the position shown in Fig. 1 in the direction of the arrow ←) up to This is a scale plate for setting elevation and depression angles. An X-ray irradiation tube is provided on one end surface of the envelope (6), and an X-ray irradiation tube made of transparent synthetic resin is attached to it in a replaceable manner. 3. The bipolar X-ray tube (to) is equipped with an insulating tube (1!1) and a lead X-ray shielding plate (11) K.
Therefore, it is maintained. The above configuration is the same as that of the conventional X-ray tube device, and one of the main parts of the present invention is the wire heating transformer (rotation) of the KX-ray tube (to) inside the envelope (6) shown in FIG. ), and the power of, for example, mu ctoov, which is applied to the primary winding (14P) of this box, is wired inside the support rod group of the above-mentioned overhead suspension system using, for example, a 600V vinyl insulated vinyl sheathed cable (V, V' The point is that two of the six cores of the d1 line are used to supply power. The V-V electric wire aFj shown by the dotted line in FIG. 2 is provided through the wall (6B) of the envelope (the low voltage below 600 V is not shown). The wire heating transformer α♦ has a support (G) engaged on a support αη provided m on the envelope wall <bi>, thereby supporting its iron core 11s (14T).

Needless to say, insulation is provided between the iron core (14T) and the secondary winding (14B) to withstand a high voltage of, for example, 1/2 of the tube voltage, and also serves to cool the X-ray tube (to). Since it is immersed in insulating oil QIK, the insulation between it and the envelope (6) is perfect, and it is also cooled. By incorporating the filament heating transformer Q4 inside the envelope (6) as shown in Figure 2, the tube voltage and current are supplied when the tube is turned on. A pipe and a high voltage transformer.
As long as the next winding is of standard type with midpoint grounding, for example tube 1
1EEE Ka150 MVP (7) Haai l1mK +
75 KVP% To supply -75 KVP to the cathode, only a single-core high voltage cable is required. Figure 5 shows an example of four single-core high-voltage cables with a withstand voltage of 80.
This is a cross-sectional view of a KVP cable. It is a conductive υ stranded wire with a cross-sectional area of 0.4 m.
(A) and cover the outside with 2M thick high insulator.
The outside of the insulator) is wrapped with an external semiconducting layer (to), a metal braid (a) is applied to this, and the outermost part is covered with a vinyl sheath (7) with a thickness of 1.5M, and the outer diameter of the cable is (to) is about 10 m, thin and easy to fold, and the weight is about i,'io for a multi-core one with an outer diameter of 50 m. Returning to Figure 1, connect the above single-core cable 4 to 1i 11 poles (20mm).
, for the cathode (two with a 20 slope) are arranged from a high-voltage transformer (not shown) to, for example, an overhead suspension system, and after M,
It is fixed to the wire tube device support tube (5) via, for example, a synthetic resin band. Insert the single-core cable (20Ax20■ into the thick rubber plate as shown in Figure 2) into the Xal pipe device (1) and insert the plug of the single, (29P) K inserted, envelope wall (6B
) is connected to the receptacle (29R'') Km. At this time, connect the cable #!l (c) of the cable shown in Figure 3 to the above plug (29R'') electrically completely. The plug (to the metal braid) is connected to one core of the V and V electric wires (to) through the 29P metal rod and the envelope (6), and this plug is used as a grounding clamp to connect the low voltage It is wired together with the line to the power supply section, where it is completely grounded by grounding work with a grounding resistance of 100Ω or less.Insulation/cooling oil (11
The oil is injected through the oil injection hole, and the volume expansion due to the temperature during use is caused by the rubber diaphragm 6υ indicated by the dotted line G.
11) The structure of each part of the X-ray emitting window (by deforming to the position 11) for absorption and X-ray emission window) is the same as that of the conventional device and will not be described in detail.

The above is an explanation of the present invention using an X-ray tube device suspended from a ceiling suspension system as an embodiment, but the X-ray tube device of the present invention is not limited to the above-mentioned hanging type. Without,
The present invention can be applied to any supporting S-cylindrical X-ray device, and the structure of the envelope of the X-ray tube device is not limited to that shown in the drawings.

Furthermore, if the secondary side of the high voltage transformer is grounded at the ←) pole or ←) pole instead of being grounded at the center, only one single-core high-voltage cable is required, and therefore the single-core cable is installed in the X-ray tube device. Only one high voltage connector is required.

Since this invention is constructed as described above, it eliminates the drawbacks of the X-ray tube device using the two-pole XlfM tube of the company. Namely, both the anode and the cathode require multi-core high-voltage cables. The waste of using only one of the multi-core anode hook cables and leaving the other conductors idle while using the anode hook cable,
Furthermore, by housing a wire heating transformer inside the X-ray tube envelope, we solved the problem of complicating the structure of the XH tube holding mechanism by connecting a multi-core high-voltage cable with a large diameter and large current capacity. This made it possible to use a small-diameter, lightweight, single-core high-voltage cable, simplified the holding mechanism of the X-ray tube device, improved its operability, and provided a convenient device that could be manufactured at low cost. be.

[Brief explanation of drawings]

Fig. 1 is an external perspective view of an X-ray tube device according to an embodiment of the present invention suspended from, for example, an overhead suspension frame, and Fig. 2 is a cross-section of Fig. A plan view (partially non-sectional) and FIG. 3 are cross-sectional views of an embodiment of the single-core high-voltage cable used in the XH tube device of the present invention. 1-.X-ray tube device 6...Outside of the X-ray tube Enclosures 6B, 6B...Wall surfaces 11, 12 of the outer bending vessel - X-ray emission window/irradiation tube 13...-Bipolar X-ray tube, 13th construction...Electrical insulating member 14...・String heating transformer 15...Low voltage P2 edge wire (3 cores in this example) 16.1
6.--Low voltage connector 19.--Insulation/cooling oil 20-.Single-core high-voltage cable 29...Single-core high voltage connector procedure amendment (method) Showa 6? September 811, Commissioner of the Japan Patent Office, 1, Indication of the case, Showa 6, 1939, Patent Application No. 5, Lxas Bow 2, Title of Invention: X-ray tube device:: 1. Relationship with the case of the person making the amendment Patent applicant 1 Agent. 8. Contents of amendment (1) The drawings will be corrected as shown in the attached sheet. (Figure 3) List of 2 attached documents

Claims (1)

[Claims] Two polar X? In a device in which an fM tube is held and supported in an envelope with a xi radiation window through an electrically insulating member, and is cooled by insulating oil, a filament is installed inside the 8'+3 tertiary envelope. In addition to providing a heating transformer, a low-voltage connector and a tζ single-core high-voltage connector are installed on the wall of the envelope, and these are connected to the front B-pi transformer and the Vc X-ray tube, respectively. XL&L tube device that supplies power.