WO2005038854A1 - X線装置 - Google Patents
X線装置 Download PDFInfo
- Publication number
- WO2005038854A1 WO2005038854A1 PCT/JP2004/015388 JP2004015388W WO2005038854A1 WO 2005038854 A1 WO2005038854 A1 WO 2005038854A1 JP 2004015388 W JP2004015388 W JP 2004015388W WO 2005038854 A1 WO2005038854 A1 WO 2005038854A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling medium
- housing
- ray apparatus
- ray
- resin
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/08—Anodes; Anti cathodes
- H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
- H01J35/105—Cooling of rotating anodes, e.g. heat emitting layers or structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2235/00—X-ray tubes
- H01J2235/16—Vessels
- H01J2235/165—Shielding arrangements
- H01J2235/168—Shielding arrangements against charged particles
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/02—Constructional details
- H05G1/025—Means for cooling the X-ray tube or the generator
Definitions
- the present invention relates to an X-ray apparatus, and more particularly, to an X-ray apparatus in which the characteristic of releasing heat generated by a rotating anode X-ray tube or the like is improved.
- An X-ray apparatus includes a rotating anode type X-ray tube in which a rotatably supported anode target is housed in a vacuum envelope, a housing for housing the rotating anode type X-ray tube, and the like. I have.
- Such an X-ray apparatus is provided with a cooling mechanism for cooling the heat generated by the anode target or the like when the heat is generated.
- a rotating anode type X-ray tube and stator are immersed in insulating oil, and heat is generated in a portion generating a large amount of heat, for example, a recoil electron capture trap provided near the anode target or a flow path provided in a part of the vacuum envelope.
- An X-ray apparatus in which the transmission efficiency is high and cooling is performed by flowing an aqueous cooling liquid, and the cooling liquid is circulated between the flow path and the cooler unit (for example, see US Pat. No. 6,519,317).
- the thermal load of the rotating anode type X-ray tube increases, the heat generated by the external force of the vacuum envelope increases.
- the required cooling performance may not be sufficient because the only cooling medium that cools the insulation is insulating oil that is not cooled by external heat exchange.
- the coolant contains water, it may corrode metal parts in the circuit.
- a recoil electron trap located near the anode target ⁇ Metal parts forming a flow path provided in a part of the vacuum envelope have a function of shutting off vacuum and coolant, so corrosion progresses Then, its function is lost and the X-ray tube becomes unusable.
- the anode target of the X-ray tube is raised. When the temperature rises, the water-based coolant enters the X-ray tube, touches the hot anode target, evaporates and evaporates, and the pressure rises, which is a safety problem.
- the insulation resistance of the aqueous coolant decreases due to metal corrosion, and the low voltage of the stator circuit and the like is reduced.
- the insulation performance of the electric circuit system and the insulation performance between the housing and the vacuum envelope are reduced.
- the stator generates more heat than when a ball bearing is used, and the electrical insulation performance is significantly reduced.
- the vacuum wall of the X-ray tube which is immersed in the aqueous coolant is corroded. As a result, the same problem as (1) may occur more easily.
- the present invention has been made in view of the above-described problems, and an object of the present invention is to provide an X-ray apparatus capable of improving heat emission characteristics and having high reliability for a long period of time. It is in.
- a rotating anode type X-ray tube containing a rotatable anode target and a cathode arranged opposite to the anode target in a vacuum envelope,
- a stator that generates an induction electromagnetic field for rotating the anode target; and a housing that houses and holds at least the rotating anode X-ray tube.
- a circulation path provided near at least a part of the rotary anode type X-ray tube and circulating an aqueous cooling medium
- An X-ray apparatus comprising: a circulation pump provided in the middle of the circulation path for forcibly driving the aqueous cooling medium; and a cooler unit having a radiator for releasing heat of the aqueous cooling medium,
- At least a part of the surface of the metal component that comes into contact with the water-based cooling medium is coated with a coating.
- FIG. 1 is a view schematically showing a configuration of an X-ray apparatus according to a first embodiment of the present invention.
- FIG. 2 is a diagram schematically showing a configuration of an X-ray apparatus according to a second embodiment of the present invention.
- FIG. 3 is a diagram schematically showing a configuration of an X-ray apparatus according to a third embodiment of the present invention.
- FIG. 4 is a diagram schematically showing a configuration of an X-ray apparatus according to a fourth embodiment of the present invention.
- FIG. 5 is a diagram schematically showing a configuration of an X-ray apparatus according to a fifth embodiment of the present invention.
- FIG. 6 is a diagram schematically showing a configuration of an X-ray apparatus according to a sixth embodiment of the present invention.
- FIG. 7 is a diagram schematically showing a configuration of an X-ray apparatus according to a modification.
- the X-ray apparatus includes a housing 10, a rotating anode X-ray tube 11, and the like.
- the housing 10 has an X-ray output window 10a provided in a part thereof.
- the housing 10 houses and holds a rotating anode type X-ray tube 11 therein.
- the housing 10 contains, for example, insulating oil as a non-aqueous cooling medium that fills the internal space containing the rotating anode X-ray tube 11.
- the rotating anode type X-ray tube 11 includes a vacuum envelope 13 and the like.
- the vacuum envelope 13 has an X-ray output window 13a provided in a part thereof.
- the vacuum envelope 13 also includes a large-diameter portion 131 having a large diameter, a small-diameter portion 132 having a smaller diameter than the large-diameter portion 131, a double-cylindrical tubular portion 133, and a cylindrical cathode accommodating portion 134. ing.
- the large-diameter portion 131, the small-diameter portion 132, and the tubular portion 133 are provided coaxially about the tube axis.
- the cathode accommodating section 134 is provided so that the tube axial force is also shifted.
- the rotatable anode target 15 is arranged in the large-diameter portion 121.
- the cathode 16 is disposed in the cathode accommodating section 134 so as to face the anode target 15.
- a recoil electron trap (shield structure) 17 is provided on a wall arranged so as to surround the cathode 16.
- the recoil electron trap 17 captures electrons reflected from the anode target 15.
- the recoil electron trap 17 is made of a material having relatively high thermal conductivity such as copper or copper alloy.
- the cathode 16 is supported by a cathode support structure 18.
- the cathode support structure 18 is fixed inside the cathode accommodating portion 134.
- the anode target 15 is connected to a rotation support mechanism 20 via a joint 19, and is rotatably supported by the rotation support mechanism 20.
- the rotation support mechanism 20 also includes a rotating body 22 connected to the joint 19 and a force such as a fixed body 23 fitted inside the rotating body 22, for example, on the front end side.
- a tubular rotor 24 is joined to the outer peripheral surface of the tubular portion on the rear end side of the rotating body 22.
- a dynamic sliding bearing for example, a dynamic sliding bearing (not shown) in a radial direction and a thrust direction is provided at a fitting portion between the rotating body 22 and the fixed body 23. Both ends of the fixed body 23 are fixed to the vacuum envelope 13.
- a stator 26 is disposed outside the vacuum envelope 13, for example, at a position surrounding the cylindrical rotor 24.
- the stator 26 generates an induction electromagnetic field for rotating the anode target 15.
- the stator 26 is housed in the housing 10 together with the rotating anode type X-ray tube 11 and is in contact with the insulating oil.
- a cooler unit 27 is provided, for example, outside the housing 10.
- the cooler unit 27 also includes a circulating pump 27a, heat exchange ⁇ 27b and the like.
- the circulation pump 27a is provided in the middle of a circulation path through which a water-based cooling medium described below circulates, and forcibly drives the water-based cooling medium.
- the heat exchanger (radiator) 27b is provided on the downstream side of the circulation pump 27a and releases heat of the aqueous cooling medium.
- the radiator is mainly made of a material having relatively high thermal conductivity, such as copper or a copper alloy.
- the water-based cooling medium here is, for example, a cooling medium having a higher heat transfer efficiency than the insulating oil in the housing 10, for example, a mixture of water and ethylene glycol or propylene glycol (hereinafter, referred to as an antifreeze). Yes, it is filled with circulation.
- the circulation path of the aqueous cooling medium is provided near at least a part of the rotary anode X-ray tube 11, and includes a first cooling path Cl, a second cooling path C2, and a third cooling path.
- 1st cooling path C 1 is formed on the cylindrical part 133 side corresponding to the lower part of the large diameter part 131.
- the second cooling path C2 is formed near or inside the recoil electron trap 17.
- the third cooling path C3 is formed inside the fixed body 23.
- the first cooling passage C1 is a disc-shaped space 28 between the wall 131a and the wall portion 14.
- the disc-shaped space 28 has an inlet C11 for introducing the aqueous cooling medium into the first cooling path C1, and an outlet C12 for extracting the aqueous cooling medium from the first cooling path C1.
- the inlet C11 and the outlet C12 are formed, for example, at both ends (at 180 ° intervals) with the center of the disc-shaped space 28 interposed therebetween.
- the second cooling path C 2 is, for example, an annular space 29 inside the recoil electron trap 17.
- the annular space 29 has an inlet C21 for introducing the aqueous cooling medium into the second cooling path C2 and an outlet C22 for extracting the aqueous cooling medium from the second cooling path C2.
- the third cooling path C3 is formed, for example, by a cavity 23a formed inside the fixed body 23 and a pipe 23b inserted into the cavity 23a. That is, the fixed body 23 is a hollow rod-shaped body, one end of which is open here (the end on the side of the cathode housing 134), and the other end (here, the end of the cylindrical rotor 24). Is closed.
- the pipe 23b is fixed to the center of rotation of the cylindrical rotor 24.
- One end of a pipe 23b located at one end of the fixed body 23 serves as an inlet C31 for introducing an aqueous cooling medium into the third cooling path C3.
- One end of the fixed body 23 serves as an outlet C32 for leading the aqueous cooling medium from the third cooling path C3. That is, the water-based cooling medium introduced from the inlet C31 is diverted in a U-shape in the cavity 23a through the pipe 23b, and is led out of the fixed body 23 from the outlet C32.
- the cooler unit 27 is connected to the housing 10 via a detachable piping joint. ing. That is, the circulation path between the housing 10 and the cooler unit 27 is formed of, for example, a hose.
- the connection portions Tl, # 2 between the hose and the housing 10 and the connection portions # 3, # 4 between the hose and the cooler unit 27 are configured such that at least one of the housing 10 side and the cooler unit 27 side is detachable. With this structure, the housing 10 and the cooler unit 27 can be separated, and the installation work and maintenance work of the cooler unit 27 and the like become easy.
- the rotating body 22 is rotated by the induction electromagnetic field generated by the stator 26.
- This rotational power is transmitted to the anode target 15 via the joint 19, and the anode target 15 rotates.
- the cathode 16 irradiates the anode target 15 with the electron beam e, and the anode target 15 emits X-rays.
- X-rays are extracted to the outside through the X-ray output windows 13a and 10a.
- a part of the electron beam e reflected by the anode target 15 is captured by the recoil electron capturing trap 17.
- the temperature of the anode target 15 increases due to the irradiation of the electron beam e.
- the temperature of the recoil electron trap 17 also rises by capturing the electron beam e reflected from the anode target 15.
- the temperature of the stator 26 also rises due to the current flowing through the coil. Due to the heat transfer, the temperature of the vacuum envelope 13 also increases.
- the heat of the vacuum envelope 13 and the stator 26 is transmitted to the insulating oil in the housing 10 and radiated to the outside. Further, the heat of the anode target 15 and the recoil electron trap 17 is transmitted to the antifreeze circulating in the circulation path and is radiated to the outside. That is, the circulation pump 27a of the cooler unit 27 circulates the antifreeze in the circulation path as shown by the arrow Y in the figure.
- the heat exchanger 27b emits the heat of the antifreeze liquid which is forcibly driven by the circulation pump 27a and whose temperature has been raised by cooling the rotary anode type X-ray tube 11.
- the antifreeze sent out from the heat exchange 27b of the cooler unit 27 is introduced into the inlet C21 through the pipe P1, and then, when passing through the annular space 29 (the second cooling path C2), captures recoil electrons. Cool trap 17. Then, the antifreeze discharged from the outlet C22 is introduced into the inlet C11 through the pipe P2, and then, when passing through the disk-shaped space 28 (the first cooling path C1), the diameter of the vacuum envelope 13 is increased. Cool part 131. [0027] After the antifreeze discharged from the outlet C12 is introduced into the inlet C31 through the pipe P3, the cavity 23a (the third cooling path C3) is provided so as to reciprocate inside the fixed body 23. ), The fixed body 23 is cooled. Then, the antifreeze discharged from the outlet C32 is returned to the cooler unit 27 via the pipe P4.
- the metal parts that come into contact with the water-based cooling medium constitute a circulation path, and include, for example, a circulation pump 27a, a heat exchanger 27b, pipes P1 to P4, cooling paths C1 to C3, and a connection. Part T1-T4, etc., and at least a part of each inner surface is covered with a coating.
- the cover When the cover is formed directly on the metal component, the cover is fixed to the surface of the metal component without any gap.
- a coating is formed indirectly on a metal component, it means that there is an intermediate coating between the metal component and the coating to increase the adhesion between the metal component and the coating. There is a gap between the body and the two are simply in contact with each other.
- a bag-like body including a portion that comes into contact with the aqueous cooling medium may function as the covering.
- the coating functions as a protective coating for the metal component.
- the coating may be formed of an inorganic coating. More specifically, a film selected from a chromate film, a fluoride film, an oxide film, and a metal plating film is desirable. In the case of a metal plating film, it is desirable that the main component is a metal selected from gold, chromium, nickel and platinum.
- the fixed body 23 having the third cooling path C3 has a portion that comes into contact with the aqueous cooling medium covered with the covering CM.
- the fixed body 23 is formed of, for example, an iron-nickel alloy, and has a surface coated thereon.
- An epoxy resin paint (for example, “Hibon 40” manufactured by Nippon Paint Co., Ltd.) can be selected as the cover CM.
- a silicone resin paint for example, “PL-250” manufactured by Pyrex Co., Ltd.
- the corrosion resistance is further improved.
- heat of a portion having a high temperature rise for example, a portion of the recoil electron trap 17 or the vacuum envelope 13 is transferred to the first cooling passage Cl,
- the antifreeze liquid having high heat transfer efficiency flowing through the second cooling passage C2 and the third cooling passage C3 is efficiently discharged.
- heat exchange is performed between the antifreeze and the insulating oil flowing through the first cooling path C1.
- efficient heat exchange is performed between the insulating oil and the antifreeze, and the heat radiation characteristic of the insulating oil is improved.
- a heat exchanger for insulating oil is not required, and the device configuration is simplified.
- Insulating oil that does not come into contact with the aqueous cooling medium flows through the periphery of the stator 26, the outer surface of the vacuum envelope 13, and the inner surface of the housing 10, thereby preventing deterioration in electrical insulation and metal corrosion. It becomes possible.
- the metal parts that come into contact with the water-based cooling medium (antifreeze) having high heat transfer efficiency are provided with an anti-corrosion coating, so that corrosion of the metal parts in the circulation path can be prevented.
- the third cooling path C 3 is formed, for example, by a through-hole 23 a that penetrates the fixed body 23 linearly.
- the fixed body 23 is a hollow rod-shaped body, and both ends thereof are open.
- the through hole 23a has an inlet C31 for introducing the aqueous cooling medium into the third cooling path C3 and an outlet C32 for extracting the aqueous cooling medium from the third cooling path C3.
- the inlet C31 is provided at the other end of the fixed body 23 (the end on the side of the cylindrical rotor 24 here).
- the outlet C32 is provided at one end of the fixed body 23 (here, the end on the side of the cathode housing 134).
- the pipes are connected by pipes Pl, P2, P3, and P4, respectively, to form a circulation path including a first cooling path Cl, a second cooling path C2, and a third cooling path C3.
- the piping P2 is partially provided inside the housing 10 for the sake of illustration.
- the antifreeze derived from the outlet C12 is introduced into the inlet C31 through the pipe P3, and then is moved in one direction (in the cylinder) inside the fixed body 23.
- the stator 24 is also configured to cool the fixed body 23 when passing through the through-hole 23a (third cooling path C3) extending in the direction toward the cathode accommodating portion 134).
- the metal parts that come into contact with the aqueous cooling medium constitute a circulation path as in the first embodiment, and include, for example, a circulation pump 27a, a heat exchanger 27b, and a pipe PI-P4. , Cooling passages C1-C3, connecting parts T1-T4, etc., and at least a part of each inner surface is covered with a coating! RU
- This coating can be formed of an organic coating film or an inorganic coating film as in the first embodiment. Therefore, according to the X-ray apparatus according to the above-described second embodiment, the same effects as those of the first embodiment can be obtained.
- the third cooling path C3 is formed by a cavity 23a formed inside the fixed body 23 and a pipe 23b inserted into the cavity 23a, for example, as in the first embodiment. It has been. That is, the inlet C31 for introducing the aqueous cooling medium into the third cooling passage C3 and the outlet C32 for leading the aqueous cooling medium from the third cooling passage C3 are both provided at one end of the fixed body 23 (here, the cathode housing). (The end on the part 134 side).
- the pipes Pl, P2, and P3 are connected between the cooler unit 27 and the inlet C21, between the outlet C22 and the inlet C31, and between the outlet C32 and the inlet C11, respectively. Been Yes.
- the outlet C12 guides the antifreeze introduced into the first cooling passage C1 to the internal space 10b of the nozzle 10.
- the connection portion T1 between the hose and the housing 10 functions as an outlet for discharging the antifreeze from the internal space 10b of the housing 10 to the cooler unit 27 via the hose.
- a return path for the antifreeze is formed between the internal space 10b of the housing 10 and the cooler unit 27 (ie, between the connection portions T1 and T3).
- the internal space 10b containing the rotating anode type X-ray tube 11 is filled with an antifreeze as an aqueous cooling medium.
- a circulation path of the antifreeze liquid is formed including the pipes Pl, P2, P3, the first cooling path Cl, the second cooling path C2, the third cooling path C3, and the return path.
- the pipes P1 and P3 are also provided in the housing 10 for the convenience shown in FIG.
- stator 26 is housed in the housing 10 together with the rotating anode X-ray tube 11. For this reason, since the stator 26 comes into contact with the aqueous cooling medium, a coating 26a is formed (molded) on at least a part of the surface thereof.
- the coating 26a is formed of, for example, an organic coating film. More specifically, the organic coating film is made of an epoxy resin, a tar epoxy resin, a polyimide resin, an acrylic resin, a fluorine resin, a silicone resin, or a polyurethane resin. It is formed of a thick coating film of the selected resin or a mixed resin containing the selected resin as a main component.
- the heat of the vacuum envelope 13, the stator 26, the anode target 15, and the recoil electron trap 17 is transmitted to the antifreeze circulating in the circulation path, and is transmitted to the outside. Heat is dissipated. That is, the circulation pump 27a of the cooler unit 27 circulates the antifreeze in the circulation path as shown by the arrow Y in the figure.
- the heat exchanger 27b is forcibly driven from the circulation pump 27a and also releases the heat of the antifreeze whose temperature has been raised by cooling the rotating anode X-ray tube 11.
- the antifreeze discharged from the heat exchange 27b of the cooler unit 27 is introduced into the inlet C21 via the pipe P1, and then rebounds when passing through the annular space 29 (the second cooling path C2).
- the trap 17 is cooled.
- the antifreeze discharged from the outlet C22 is introduced into the inlet C31 through the pipe P2, and then passes through the cavity 23a (third cooling path C3) provided to reciprocate inside the fixed body 23. At this time, the fixed body 23 is cooled.
- the antifreeze liquid led out of the outlet C32 is introduced into the inlet C11 through the pipe P3, when passing through the disk-shaped space 28 (the first cooling path C1), the vacuum envelope 13 Cool the large diameter part of 131. Then, the antifreeze liquid drawn out from the outlet C12 is drawn out into the internal space 10b of the housing 10, and cools the vacuum envelope 13, the stator 26, and the like. Then, the antifreeze in the internal space 10b is returned to the cooler unit 27 from the connection portion T1.
- the metal parts that come into contact with the aqueous cooling medium constitute a circulation path, for example, a circulation pump 27a, a heat exchanger 27b, a pipe PI-P4, a cooling path C1-C3, Connection part T1-T4, inner surface of housing 10, surface of vacuum envelope 13, output window 10a for X-ray, output window 13a for X-ray, etc., and at least a part of each is coated with a coating.
- This cover CM can be formed of an organic coating film or an inorganic coating film as in the first embodiment.
- the housing 10 has a double structure of a first layer 101 formed of lead and a second layer 102 formed of aluminum covering the outside of the first layer 101. It is desirable that the first layer 101 be covered in advance with the entire surface (that is, the inner surface and the outer surface) by the coating CM. Further, the second layer 102 has at least the inner surface covered with a cover CM. The first layer 101 and the second layer 102 are bonded via an adhesive.
- an epoxy-modified resin paint for example, “Nippon 30HB” manufactured by Nippon Paint Co., Ltd.
- a silicone resin paint for example, “PL-250” manufactured by NIREX Co., Ltd.
- the corrosion resistance is further improved.
- Epoxy resin paint for example, Nippon Paint Co., Ltd. "Hypon 40" is selected as the coating CM covering the surface of the iron-nickel alloy such as the vacuum envelope 13 or the nickel plating surface thereon. It is possible. In addition, if a silicone resin paint (for example, “PL-250” manufactured by NIREX Co., Ltd.) is applied as a base coat of this epoxy resin paint, corrosion resistance will be further increased. Is improved.
- the coating CM for coating the inner surface of the X-ray output window 10a formed of aluminum may be a polyimide paint (for example, "U Varnish A” or "U- ⁇ Varnish” manufactured by Ube Industries, Ltd.). S ”) can be selected.
- a polyimide paint for example, "U Varnish A” or “U Varnish S” manufactured by Ube Industries, Ltd.
- the coating CM covering the surface of the X-ray output window 13a formed by beryllium. It is possible.
- the same effects as in the first embodiment can be obtained.
- the cost is advantageous and maintenance is easy.
- the water-based cooling medium has a higher heat transfer efficiency than the insulating oil, it is possible to further improve the heat release characteristics of the entire apparatus.
- the corrosion resistance of the metal parts in contact with the aqueous cooling medium is improved, and the electrical insulation is also improved.
- the electric resistance value ( ⁇ ) between the housing 10 and the vacuum envelope 13 was measured using a tester.
- the electrical resistance between the two was lk ⁇ or less, and the electrical insulation was insufficient.
- the housing 10 is formed by bonding the first layer 101 and the second layer 102 which are not covered with the covering body and then covering the inner surface of the first layer 101 three times with the covering body CM, The electrical resistance between the two was in the range of 1 ⁇ -10 kQ, and it was difficult to say that the electrical insulation was sufficient.
- the housing 10 is provided with the first layer 101 having the inner surface covered with the cover CM, and the second layer 102 having the inner surface and the outer surface covered with the cover CM.
- the inner surface of the first layer 101 is further formed by coating the inner surface of the first layer 101 twice with the cover CM, and the electrical resistance between the housing 10 and the vacuum envelope 13 becomes 20 ⁇ Thus, sufficient electrical insulation was secured.
- the conductivity of the aqueous cooling medium used at this time was 1-2 mSZm.
- the third cooling path C3 is formed by a through-hole 23a penetrating the fixed body 23 in a straight line, for example, as in the second embodiment.
- the fixed body 23 is a hollow rod-shaped body, and both ends thereof are open.
- the through hole 23a has an inlet C31 for introducing the aqueous cooling medium into the third cooling path C3 and an outlet C32 for extracting the aqueous cooling medium from the third cooling path C3.
- the introduction port C31 is provided at one end of the fixed body 23 (here, the end on the side of the cathode storage section 134).
- the outlet C32 is provided at the other end of the fixed body 23 (here, the end on the side of the cylindrical rotor 24).
- the pipes Pl and P2 are connected between the cooler unit 27 and the inlet port C21, and between the outlet port C22 and the inlet port C31, respectively.
- the outlet C32 guides the antifreeze introduced into the third cooling path C3 to the internal space 10b of the housing 10.
- the connection portion T1 between the hose and the housing 10 functions as an outlet for discharging the antifreeze from the internal space 10b of the housing 10 to the cooler unit 27 via the hose.
- an antifreeze liquid return path is formed between the internal space 10b of the housing 10 and the cooler unit 27 (that is, between the connection portions T1 and T3).
- the internal space 10b containing the rotating anode type X-ray tube 11 is filled with an antifreeze as an aqueous cooling medium.
- a circulation path of the antifreeze is formed including the pipes Pl and P2, the second cooling path C2, the third cooling path C3, and the return path.
- the piping P1 is a force whose part is shown outside the housing 10 as shown in the drawing.
- the stator 26 is housed in the housing 10 together with the rotating cathode X-ray tube 11 in the same manner as in the third embodiment, and at least a part of the surface thereof is covered with the anti-corrosion coating film 26a. Formed (molded). As a result, it is possible to prevent the periphery of the stator 26 from lowering in electrical insulation without coming into contact with the aqueous cooling medium.
- the antifreeze derived from the outlet C22 is introduced into the inlet C31 via the pipe P2, and then flows in one direction (cathode) inside the fixed body 23.
- the storage unit 134 is also configured to cool the fixed body 23 when passing through the through hole 23a (third cooling path C3) extending in the direction toward the cylindrical rotor 24 in the direction of the force toward the cylindrical rotor 24! RU
- the metal parts that come into contact with the aqueous cooling medium constitute a circulation path as in the third embodiment, and include, for example, a circulation pump 27a, a heat exchanger 27b, a pipe PI-P4, a cooling path.
- This coating body CM can be formed with an organic coating film or an inorganic coating film as in the third embodiment. Therefore, according to the X-ray apparatus according to the fourth embodiment described above, the same effects as in the third embodiment can be obtained.
- the X-ray apparatus according to the fifth embodiment basically has the same configuration as that of the third embodiment shown in FIG.
- the third embodiment is different from the third embodiment in that the second embodiment is arranged.
- the stator 26 does not come into contact with the aqueous cooling medium, it is possible to prevent a decrease in electrical insulation.
- the third embodiment it is possible to reduce the cost that does not require the formation of a waterproof coating on the surface of the stator 26, and it is advantageous for reducing the size of the entire apparatus.
- the stator 26 having such a configuration cannot be cooled by a cooling medium, but can be air-cooled using outside air.
- the metal parts that come into contact with the water-based cooling medium constitute a circulation path as in the third embodiment, and include, for example, a circulation pump 27a, a heat exchanger 27b, a pipe PI-P4, Cooling passages C1-C3, connecting parts T1-T4, inner surface of housing 10, surface of vacuum envelope 13, X-ray output window 10a, X-ray output window 13a, etc. Is coated.
- This coating body CM can be formed with an organic coating film or an inorganic coating film as in the third embodiment. Therefore, according to the X-ray apparatus according to the fifth embodiment described above, the same effects as in the third embodiment can be obtained.
- the X-ray apparatus according to the sixth embodiment basically has a configuration similar to that of the fourth embodiment shown in FIG.
- the fourth embodiment is different from the fourth embodiment in that the second embodiment is disposed in the second embodiment.
- the stator 26 does not come into contact with the aqueous cooling medium, it is possible to prevent a decrease in electrical insulation.
- the stator 26 having such a configuration cannot be cooled by a cooling medium, but can be air-cooled using outside air.
- the metal parts that come into contact with the aqueous cooling medium constitute a circulation path as in the third embodiment, and include, for example, a circulation pump 27a, a heat exchanger 27b, a pipe PI-P4, Cooling passages C1-C3, connecting parts T1-T4, inner surface of housing 10, surface of vacuum envelope 13, X-ray output window 10a, X-ray output window 13a, etc. Is coated.
- This coating body CM can be formed with an organic coating film or an inorganic coating film as in the third embodiment. Therefore, according to the X-ray apparatus according to the above-described sixth embodiment, the same effects as in the third embodiment can be obtained.
- the present invention is not limited to the above-described embodiment as it is, and can be concretely modified at the stage of implementation by modifying the constituent elements without departing from the scope of the invention.
- various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components, such as all components shown in the embodiment, may be deleted. Furthermore, you may combine suitably the component covering different embodiment.
- insulating oil is used as the first cooling medium that fills the inside of the housing, and the second cooling medium that fills the circulating furnace has a higher heat transfer than the first cooling medium.
- the first cooling medium and the second cooling medium other combinations of cooling mediums, not limited to the combination of insulating oil and antifreeze, respectively, can be used.
- the inside of the housing and the circulating furnace are filled.
- antifreeze is used, which has higher heat transfer efficiency than insulating oil.
- the cooling medium applicable in these embodiments is not limited to the antifreeze, and other cooling mediums can be used.
- the dynamic pressure type slide bearing is used for the rotation support mechanism that rotatably supports the anode target.
- the present invention can be applied to a case where a rolling bearing utilizing a ball bearing, a magnetic bearing, or the like is used.
- the coupling between the stator coil and the rotary drive of the rotating body may be poor, or the coil may generate more heat when performing ultra-high-speed rotation. The same effect can be obtained by adopting the same configuration as each embodiment.
- the water-based cooling medium supplied from the cooler unit is introduced with a force to be preferentially cooled, such as a portion having low heat resistance or a portion having a large calorific value.
- a force to be preferentially cooled such as a portion having low heat resistance or a portion having a large calorific value.
- the outlet C12 leads the antifreeze introduced into the first cooling passage C1 to the internal space 10b of the housing 10.
- the connection portion T1 between the hose and the housing 10 functions as a discharge port for discharging the antifreeze from the internal space 1 Ob of the housing 10 to the cooler unit 27 via the hose. That is, a return path for the antifreeze is formed between the internal space 10b of the housing 10 and the cooler unit 27 (that is, between the connection portions T1 and T3).
- the internal space 10b containing the rotating anode type X-ray tube 11 is filled with an antifreeze as an aqueous cooling medium.
- a circulation path of the antifreeze is formed including the pipes Pl, P2, P3, the first cooling path Cl, the second cooling path C2, the third cooling path C3, and the return path.
- the antifreeze sent from the heat exchange 27b of the cooler unit 27 is introduced into the inlet port C31 through the pipe P1, and then the cavity 23a is provided to reciprocate inside the fixed body 23.
- the fixed body 23 is cooled.
- the antifreeze, from which the force of the outlet C32 is also led, is introduced into the inlet C21 through the pipe P2, and then cools the recoil electron trap 17 when passing through the annular space 29 (the second cooling path C2). I do.
- the antifreeze derived from the outlet C22 is introduced into the inlet C11 through the pipe P3,
- the large-diameter portion 131 of the vacuum envelope 13 is cooled when passing through the disk-shaped space 28 (first cooling path CI).
- the antifreeze discharged from the outlet C12 is returned to the cooler 27 via the pipe P4.
- the temperature is high and the part is cooled with the heat transfer efficiency! And the cooling medium is used. Thereby, good heat release performance can be realized. As a result, it is possible to provide an X-ray apparatus capable of improving heat emission characteristics and securing high reliability for a long period of time.
- a heat radiation characteristic can be improved, and a high reliability X-ray apparatus can be provided for a long period of time.
Landscapes
- X-Ray Techniques (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005514823A JP4828942B2 (ja) | 2003-10-17 | 2004-10-18 | X線装置 |
EP04792557A EP1675151B1 (en) | 2003-10-17 | 2004-10-18 | X-ray apparatus |
US11/401,300 US7391852B2 (en) | 2003-10-17 | 2006-04-11 | X-ray apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-358277 | 2003-10-17 | ||
JP2003358277 | 2003-10-17 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/401,300 Continuation US7391852B2 (en) | 2003-10-17 | 2006-04-11 | X-ray apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005038854A1 true WO2005038854A1 (ja) | 2005-04-28 |
Family
ID=34463291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/015388 WO2005038854A1 (ja) | 2003-10-17 | 2004-10-18 | X線装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7391852B2 (ja) |
EP (1) | EP1675151B1 (ja) |
JP (1) | JP4828942B2 (ja) |
CN (1) | CN1868027A (ja) |
WO (1) | WO2005038854A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007149452A (ja) * | 2005-11-25 | 2007-06-14 | Toshiba Corp | 回転陽極x線管 |
JP2008108700A (ja) * | 2006-09-29 | 2008-05-08 | Toshiba Corp | 回転陽極型x線管装置 |
CN107546089A (zh) * | 2016-08-04 | 2018-01-05 | 上海丞铭电子技术有限公司 | 一种大功率x射线球管 |
CN107546089B (zh) * | 2016-08-04 | 2024-05-28 | 上海钧安医疗科技有限公司 | 一种大功率x射线球管 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8503615B2 (en) * | 2010-10-29 | 2013-08-06 | General Electric Company | Active thermal control of X-ray tubes |
WO2013174436A1 (en) * | 2012-05-24 | 2013-11-28 | Quantum Technologie Gmbh | Cooled rotary anode for an x-ray tube |
JP6677420B2 (ja) * | 2016-04-01 | 2020-04-08 | キヤノン電子管デバイス株式会社 | X線管装置 |
CN107768219B (zh) * | 2017-11-29 | 2023-10-13 | 上海钧安医疗科技有限公司 | 一种新型大容量x线球管散热结构 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0665574A1 (en) | 1994-01-28 | 1995-08-02 | Rigaku Corporation | Rotating-anode x-ray tube |
US20020097838A1 (en) | 2001-01-22 | 2002-07-25 | Shin Saito | Rotary anode type X-ray tube apparatus |
JP2003197136A (ja) * | 2001-12-27 | 2003-07-11 | Toshiba Corp | 回転陽極x線管装置 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2339102A1 (de) * | 1973-04-05 | 1975-02-13 | Felten & Guilleaume Kabelwerk | Wassergekuehltes hochspannungsenergiekabel |
US4477921A (en) * | 1981-11-27 | 1984-10-16 | Spire Corporation | X-Ray lithography source tube |
JPS62174193A (ja) * | 1986-01-29 | 1987-07-30 | Canon Inc | 光記録方法 |
JPS62174193U (ja) * | 1986-04-25 | 1987-11-05 | ||
US4880051A (en) * | 1986-07-14 | 1989-11-14 | Kabushiki Kaisha Patine Shokai | Piping apparatus for melting snow and ice |
JPH0472420A (ja) * | 1990-07-10 | 1992-03-06 | Daihatsu Motor Co Ltd | エンジン冷却管 |
DE9105292U1 (ja) * | 1991-04-30 | 1991-09-19 | Hendrix, Jules, Dr., 2000 Hamburg, De | |
JPH07230818A (ja) * | 1994-02-18 | 1995-08-29 | Toyota Motor Corp | 燃料電池の製造方法 |
US6115454A (en) | 1997-08-06 | 2000-09-05 | Varian Medical Systems, Inc. | High-performance X-ray generating apparatus with improved cooling system |
US6257762B1 (en) * | 1999-02-19 | 2001-07-10 | General Electric Company | Lead surface coating for an x-ray tube casing |
JP2000297995A (ja) * | 1999-04-14 | 2000-10-24 | Mitsubishi Electric Corp | 配管装置とその製造方法、熱交換器 |
JP4357094B2 (ja) * | 1999-08-10 | 2009-11-04 | 株式会社東芝 | 回転陽極型x線管及びそれを内蔵したx線管装置 |
MXPA01011348A (es) * | 2000-02-08 | 2003-07-14 | Adsil Lc | Metodo para mejorar la eficiencia de la transferencia del calor utilizando recubrimientos de silano y articulos recubiertos producidos por el mismo. |
US6366642B1 (en) * | 2001-01-16 | 2002-04-02 | Varian Medical Systems, Inc. | X-ray tube cooling system |
US6519317B2 (en) * | 2001-04-09 | 2003-02-11 | Varian Medical Systems, Inc. | Dual fluid cooling system for high power x-ray tubes |
US6751292B2 (en) * | 2002-08-19 | 2004-06-15 | Varian Medical Systems, Inc. | X-ray tube rotor assembly having augmented heat transfer capability |
-
2004
- 2004-10-18 JP JP2005514823A patent/JP4828942B2/ja active Active
- 2004-10-18 EP EP04792557A patent/EP1675151B1/en active Active
- 2004-10-18 WO PCT/JP2004/015388 patent/WO2005038854A1/ja active Application Filing
- 2004-10-18 CN CNA2004800305470A patent/CN1868027A/zh active Pending
-
2006
- 2006-04-11 US US11/401,300 patent/US7391852B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0665574A1 (en) | 1994-01-28 | 1995-08-02 | Rigaku Corporation | Rotating-anode x-ray tube |
US20020097838A1 (en) | 2001-01-22 | 2002-07-25 | Shin Saito | Rotary anode type X-ray tube apparatus |
JP2002216683A (ja) * | 2001-01-22 | 2002-08-02 | Toshiba Corp | 回転陽極型x線管装置 |
JP2003197136A (ja) * | 2001-12-27 | 2003-07-11 | Toshiba Corp | 回転陽極x線管装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1675151A4 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007149452A (ja) * | 2005-11-25 | 2007-06-14 | Toshiba Corp | 回転陽極x線管 |
JP4690868B2 (ja) * | 2005-11-25 | 2011-06-01 | 株式会社東芝 | 回転陽極x線管 |
US7983395B2 (en) | 2005-11-25 | 2011-07-19 | Kabushiki Kaisha Toshiba | Rotation anode X-ray tube |
JP2008108700A (ja) * | 2006-09-29 | 2008-05-08 | Toshiba Corp | 回転陽極型x線管装置 |
CN107546089A (zh) * | 2016-08-04 | 2018-01-05 | 上海丞铭电子技术有限公司 | 一种大功率x射线球管 |
CN107546089B (zh) * | 2016-08-04 | 2024-05-28 | 上海钧安医疗科技有限公司 | 一种大功率x射线球管 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005038854A1 (ja) | 2007-11-22 |
EP1675151A1 (en) | 2006-06-28 |
JP4828942B2 (ja) | 2011-11-30 |
EP1675151A4 (en) | 2010-01-13 |
EP1675151B1 (en) | 2012-09-19 |
CN1868027A (zh) | 2006-11-22 |
US7391852B2 (en) | 2008-06-24 |
US20060182222A1 (en) | 2006-08-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7203280B2 (en) | X-ray apparatus | |
US7197118B2 (en) | X-ray apparatus | |
US7558376B2 (en) | Rotating anode X-ray tube assembly | |
US7206380B2 (en) | X-ray apparatus | |
US7499525B2 (en) | Heat exchanger for a diagnostic x-ray generator with rotary anode-type x-ray tube | |
US7391852B2 (en) | X-ray apparatus | |
CN101154550A (zh) | 旋转阳极x-射线管组件 | |
JP2001273998A (ja) | X線管及びその製造方法 | |
US20060050852A1 (en) | Integrated fluid pump for use in an x-ray tube | |
JP4220881B2 (ja) | X線管装置 | |
WO2000057115A1 (fr) | Collecteur avec module thermoelectrique integre | |
JP2009252648A (ja) | 回転陽極型x線管装置 | |
JP2004103568A (ja) | 回転陽極型x線管装置 | |
CN215452623U (zh) | 一种电机、用于电机散热的导热结构及汽车 | |
JP2009043652A (ja) | 冷却器及びx線管装置 | |
JP2009158418A (ja) | 回転陽極型x線管装置 | |
CN116744522A (zh) | 一种便携式x光机组合机头 | |
JP4847067B2 (ja) | X線管装置 | |
JP2013016282A (ja) | X線管装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200480030547.0 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005514823 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11401300 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004792557 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2004792557 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 11401300 Country of ref document: US |