WO2013102426A1 - 辐射器件安装箱以及x射线发生器 - Google Patents

辐射器件安装箱以及x射线发生器 Download PDF

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Publication number
WO2013102426A1
WO2013102426A1 PCT/CN2012/088082 CN2012088082W WO2013102426A1 WO 2013102426 A1 WO2013102426 A1 WO 2013102426A1 CN 2012088082 W CN2012088082 W CN 2012088082W WO 2013102426 A1 WO2013102426 A1 WO 2013102426A1
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WO
WIPO (PCT)
Prior art keywords
cover
liquid
end cover
hole
box
Prior art date
Application number
PCT/CN2012/088082
Other languages
English (en)
French (fr)
Inventor
赵自然
陈志强
罗希雷
丁富华
吴万龙
郑志敏
Original Assignee
同方威视技术股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 同方威视技术股份有限公司 filed Critical 同方威视技术股份有限公司
Priority to EP12864584.3A priority Critical patent/EP2677843B1/en
Priority to US14/005,605 priority patent/US9263226B2/en
Publication of WO2013102426A1 publication Critical patent/WO2013102426A1/zh

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00X-ray tubes
    • H01J35/02Details
    • H01J35/04Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/08Anodes; Anti cathodes
    • H01J35/12Cooling non-rotary anodes
    • H01J35/13Active cooling, e.g. fluid flow, heat pipes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00X-ray tubes
    • H01J35/02Details
    • H01J35/16Vessels; Containers; Shields associated therewith
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05GX-RAY TECHNIQUE
    • H05G1/00X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/02Constructional details
    • H05G1/025Means for cooling the X-ray tube or the generator
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05GX-RAY TECHNIQUE
    • H05G1/00X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/02Constructional details
    • H05G1/04Mounting the X-ray tube within a closed housing
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05GX-RAY TECHNIQUE
    • H05G1/00X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08Electrical details
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05GX-RAY TECHNIQUE
    • H05G1/00X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08Electrical details
    • H05G1/085Circuit arrangements particularly adapted for X-ray tubes having a control grid

Definitions

  • the invention belongs to the technical field of X-ray generators, and in particular relates to a radiation device mounting box and an X-ray generator provided with the radiation device mounting box. Background technique
  • the core of the security inspection equipment using X-ray imaging technology is the X-ray source and image acquisition and processing system.
  • the imaging quality and detection effect of the security inspection equipment depend to a large extent on the performance of the X-ray source, so the quality of the X-ray source is crucial.
  • the X-ray source of the security inspection equipment using X-ray imaging technology is mainly an X-ray generator.
  • the existing X-ray generator includes an X-ray tube assembly, a high frequency high voltage generator, a filament power supply module, a cooling system, and a cabinet, wherein:
  • the X-ray tube assembly includes an X-ray tube and a collimator (or front collimator) that is fixedly coupled to the anode and cathode retainer sleeves of the X-ray tube.
  • the X-ray tube assembly is located in the box body, and the box body is formed by welding a plate and a screw.
  • the collimator and the box are two separate components that are fixedly connected together, the collimator is provided with a beam opening hole, and the box body is provided with a beam opening port.
  • an X-ray protective layer is fixed on the inner wall of the casing except the beam opening to shield the X-rays in the non-main beam direction.
  • the high frequency high voltage generator is electrically connected to the cathode and the anode of the X-ray tube, and the high frequency high voltage generator is used to supply a DC voltage to the anode of the X-ray tube and the cathode thereof.
  • the filament power supply module is electrically connected to the cathode of the X-ray tube, and the filament power supply module is used to supply a high frequency pulse voltage to the cathode of the X-ray tube.
  • the cathode of the X-ray tube When the filament power supply module supplies a high-frequency pulse voltage to the cathode of the X-ray tube, the cathode of the X-ray tube emits an electron current to bombard the anode of the X-ray tube under the action of a high-voltage electric field, thereby exciting the X-ray, and the X-ray can be sequentially It is emitted outside the box through the beam exit hole and the exit port.
  • the cooling system is used to dissipate the heat accumulated on the X-ray tube to prevent the X-ray tube from burning out.
  • the cabinet and the collimator form an enclosed space which is filled with cooling liquid and is an important part of the cooling system.
  • the prior art has at least the following problems:
  • the insulating liquid is heated and expanded (referred to as thermal expansion), and the heated and expanded insulating liquid exerts a large pressure on the electronic components in the box, and the pressing box
  • the inner wall is deformed outward.
  • the insulating liquid will cool and shrink (referred to as cold shrinkage).
  • the atmosphere outside the box will be deformed inwardly against the outer wall of the box, and the insulating liquid
  • the volume expansion or contraction causes the pressure of the housing and the electronic components in the cabinet to vary greatly, so that the housing and the electronic components inside the housing are easily damaged by the pressure from the insulating liquid. Summary of the invention
  • the object of the present invention is to provide a radiation device mounting box and an X-ray generator provided with the radiation device mounting box, which solves the prior art that the housing and the electronic components in the housing are easily damaged by the pressure from the insulating liquid. Technical problem.
  • the present invention provides the following technical solutions:
  • the radiant device mounting box includes a box body, and further includes a ring-shaped protruding edge fixed on the inner wall of the box body and a compensation device connected with the protruding edge between the liquid sealing fixed connection or the liquid sealing movable connection, wherein - forming a liquid receiving chamber for accommodating the insulating liquid between one of the opposite sides of the compensating device and the inner wall of the tank, the convex edge;
  • Forming between an inner wall of the case opposite the other side of the opposite side of the compensating device and an inner wall of the ledge allows the compensating device to be deformed or moved in a direction away from or close to the insulating liquid Compensation device activity space.
  • the convex edge is provided with a compensation device for liquid-tight connection or liquid-tight active connection with the convex edge, and the insulation is filled in the box body.
  • the compensating device e.g., preferably the elastic tympanic membrane, piston
  • the compensating device may deform or move within the active space of the compensating device.
  • the volume expansion of the insulating liquid will squeeze the compensating device to deform or move away from the insulating liquid, that is, in the direction of the inner wall of the tank, and the compensating device that deforms or moves compresses the working space of the compensating device.
  • the volume increases the volume of the liquid accommodating chamber, and the enlarged liquid accommodating chamber reduces the pressure exerted by the partially thermally expanded insulating liquid on the housing and the electronics in the housing.
  • the atmospheric compression compensating device deforms the compensating device away from the insulating liquid and squeezes the insulating liquid, thereby ensuring
  • the inside of the box is filled with insulating liquid, and the pressure from the insulating liquid in all parts of the box and the electronic components is basically constant, and the pressure is not too high, so the electronic components in the box or the box are not insulated.
  • the liquid is crushed, so that the prior art has a technical problem that the case and the electronic components in the case are easily damaged by the pressure from the insulating liquid.
  • the compensating device when vacuuming the oil into the tank, after the process of injecting the insulating liquid into the tank, the compensating device will squeeze the insulating liquid by elastic deformation or movement to ensure that the insulating liquid fills the entire tank, thereby ensuring the tank.
  • the amount of oil in the body meets the requirements.
  • the compensating device is a resilient tympanic membrane that is fixedly coupled to the port of the flange away from the inner wall of the casing and over the port of the flange away from the inner wall of the casing
  • the elastic tympanic membrane can be deformed in a direction away from or close to the insulating liquid in the movable space of the compensating device; or the compensating device is a piston embedded in the protruding edge, the piston can be in the
  • the compensation device moves in a direction away from or close to the insulating liquid, and an anti-dropout structure for blocking the piston from coming out of the protruding edge is further disposed between the piston and the inner wall of the flange.
  • the outer contour of the cross section of the convex edge is one of a circle, an ellipse, a triangle, a rectangle or a polygon other than a rectangle;
  • the casing is further provided with air guiding holes respectively communicating with the outside air and the movable space of the compensation device;
  • the material of the elastic tympanic membrane is nitrile rubber or fluororubber; and/or the elastic tympanic membrane is fixed on the protruding edge by a fastener, or the elastic tympanic membrane is away from the inner wall of the tank a side of the pressing plate is provided with a pressing plate, the edge of the pressing plate pressing the edge of the elastic tympanic membrane against the protruding edge, and the edge of the pressing plate is fixedly connected with the protruding edge by a fastener, a central portion of the pressure plate is provided with one or more through holes through which the insulating liquid can pass freely;
  • the pressing plate is in the shape of a disk, and the fasteners are equiangularly distributed on the pressing plate, the elastic tympanic membrane and the protruding edge along a circumferential direction of the pressing plate;
  • the box body includes a box body portion, a first box cover, and a second box cover, wherein:
  • the first cover and the second cover are respectively fixed on two ports of opposite positions of the box body, and The protruding edge is fixed on the second cover or the first cover;
  • the box body portion is of a unitary structure, and materials of the first box cover and the second box cover are the same as those of the box body portion.
  • the side of the elastic tympanic membrane adjacent to the convex rim or the side of the elastic tympanic membrane adjacent to the pressure plate is fixed with at least one convex portion having an outer convex shape, the convex edge or the a recessed concave portion is formed in the pressure plate, and the convex portion is embedded in the recess;
  • the box body portion is made of aluminum or aluminum alloy material by a stretch forming process or a wire cutting process; and/or, the convex edge and the second box cover are integrated;
  • the outer surface of the box body portion further has at least one reinforcing rib integrally formed with the box body portion, and the reinforcing rib is provided with a screw hole;
  • a sealing strip is disposed between the first cover and the case body and/or between the second cover and the case body, wherein:
  • a step surface or a groove is formed on an end surface of the box body portion, and the sealing strip is embedded in the step surface or the groove and extends out of an end surface of the box body portion, the first box cover and/or a surface of the second cover close to the case body portion is pressed against a portion of the seal strip extending from an end surface of the case body portion; or the first cover and/or the second case a stepped surface or a groove is formed on the edge of the cover, and the sealing strip is embedded in the stepped surface or the groove and extends out of the edge of the first cover and/or the second cover, the box a surface of the body portion adjacent to the first cover and/or the second cover is pressed against a portion of the seal extending from an edge of the first cover and/or the second cover;
  • the radiation device mounting box further includes a collimator disposed in the housing and one or more layers of protective devices, wherein:
  • the guard device is made of a material having a shielding function for X-rays; the collimator and the guard device are of a unitary structure, or the collimator and the guard device are fixed by two separate components Connected together; each of the guards is provided with a ray outlet, and the ray outlet, the beam exit aperture and the outlet port are coaxial.
  • the convex portion has a ring shape, and an axial line thereof coincides with an axial line of the convex edge;
  • the guard device has a cylindrical shape or a prism shape, and the guard device comprises a cylinder body, a first end cover and a second end cover, wherein: the first end cover and the second end cover respectively Two ports opposite to the position of the barrel are fixedly coupled together; at least one of the first end cover, the second end cover or the barrel is provided with a fluid passage and/or a circuit passage;
  • the casing is provided with a layer of the shielding device, and a liquid exists between the shielding device and the casing a flow and component installation space; or, the casing is provided with a plurality of layers of the protection device, and the protection device of the inner layer of the plurality of the protection devices is located inside the protection device of the outer layer, the inner layer There is a liquid flow and component mounting space between the guard and the guard of the outer layer and between the guard of the outermost layer and the case. ;
  • the guard is made of an insulating material
  • the outlet port is filled with a sealing window
  • the sealing window is made of X-ray permeable material
  • the sealing window is used in the box body and the box body A liquid-gas seal is achieved between.
  • the protective device is made of lead oxide
  • the fluid passage and/or the circuit passage is a curved through hole or inclined formed at least on one of the first end cover, the second end cover or the cylinder Or at least one of the first end cover, the second end cover or the cylindrical body is a two-layer structure composed of an outer layer plate and an inner layer plate which are superposed on each other, wherein: a liquid flow chamber exists between the outer layer plate and the inner layer plate, and the outer layer plate and the inner layer plate are respectively provided with a flow guiding hole communicating with the liquid flow chamber, and the fluid passage is The flow guiding hole and the liquid flow chamber are configured, and the orthographic projection of the flow guiding hole on the outer layer plate along the axial direction thereof is completely shifted from the guiding hole on the inner layer plate.
  • the protection device is made of lead tetraoxide
  • the fluid passage and the circuit passage are respectively disposed on the first end cover and the second end cover;
  • the barrel body is embedded with an internally threaded tube, the internal threaded tube is internally threaded, and a portion of the connecting bolt having an external thread is inserted through the outer layer and into the inner threaded tube Threading cooperates and securely connects the barrel to the first end cap and the second end cap;
  • the inner layer plate is fixed with a positioning protrusion, the positioning protrusion is embedded in the positioning counterbore on the outer layer plate and is tightly matched with the positioning counterbore;
  • a stepped step portion is formed on an inner side edge of the cylinder, and the step portion abuts an edge of the inner layer plate;
  • the inner end plate of the second end cover is provided with at least one positive limit hole, the anode has a limited position screw hole, and the positioning stud is provided with an external thread portion and the limit screw hole Cooperating, an end of the positioning stud that is away from the limiting screw hole is inserted into the positive limit hole;
  • the outer end plate and/or the inner layer plate on the first end cap and/or the second end cap are equiangularly distributed along the circumferential direction of the cylinder
  • the flow guiding holes, and each of the flow guiding holes to the axial center of the cylinder The distance between them is the same;
  • the wire hole on the outer layer plate in the first end cover includes a longitudinal hole that coincides with or is parallel with the axial direction of the barrel and a shaft that communicates with the longitudinal hole A transverse bore oriented in a direction perpendicular to the axial direction of the longitudinal bore.
  • the X-ray generator includes an X-ray tube, a high-frequency high-voltage generator, a filament power supply module, and an oil-cooled circulation system, wherein - the X-ray tube is installed in the protection device, and the X-ray tube emits X-rays sequentially pass through the ray outlet, the exit aperture, and the exit aperture and illuminate the housing of the radiation device mounting box;
  • the high frequency high voltage generator is electrically connected to a cathode and an anode of the X-ray tube;
  • the filament power supply module is electrically connected to a cathode of the X-ray tube;
  • the oil-cooling circulation system includes a liquid filling tank, an insulating liquid filled in the liquid filling tank, and a cooling device for reducing the temperature of the insulating liquid, the cooling device including an oil pump, a radiator, and a cooling fan, wherein:
  • the liquid filling tank is constituted by the radiation device mounting box provided by any one of the above technical solutions of the present invention; the heat sink is located outside the liquid filling tank, and the liquid inlet of the radiator and the liquid filling tank The liquid outlet is connected to communicate with the liquid inlet of the liquid filling tank;
  • the oil pump provides power for circulating flow between the insulating liquid in the liquid filled tank and the insulating liquid in the heat sink;
  • the guard device is further provided with a circuit channel, and the high-frequency high-voltage generator is electrically connected to the cathode and the anode of the X-ray tube by a wire or an interface passing through the circuit channel, and the filament power supply module is Electrically connecting the wire or interface of the circuit channel to the cathode of the X-ray tube;
  • At least part of the modules constituting the high-frequency high-voltage generator are located between the protection device and the casing, and the external power supply of the casing or the remaining modules of the modules constituting the high-frequency high-voltage generator are located in the casing Outside
  • An outlet passage is formed in the box, and a part of the module constituting the high-frequency high-voltage generator in the box and a part of the module outside the box or the high-frequency high-voltage generator Electrically connected to the external power source of the casing by wires or interfaces passing through the outlet passage;
  • the guard device includes a cylinder body, a first end cover and a second end cover, and the first end cover and the second end cover are fixedly coupled to the two ports of the cylinder respectively;
  • At least one of the first end cap, the second end cap or the barrel is provided with a fluid passage and the electric Road channel.
  • the first end cover and the second end cover are double-layered structures formed by overlapping outer layers and inner layers, and the first end cover and the second end The circuit channel is opened on the end cover, wherein:
  • the circuit channel formed on the first end cover includes a cathode positioning hole formed on an inner layer plate on the first end cover and an outer layer plate opened on the second end cover a wire hole, a retaining wire outside the cathode in the X-ray tube is embedded in the cathode positioning hole, and the wire hole includes a longitudinal hole or a parallel hole and a parallel direction of the X-ray tube a transverse hole in which the longitudinal holes communicate and the axial direction is perpendicular to the axial direction of the longitudinal hole,
  • the cathode of the X-ray tube is led out from the wire sleeve by two wires;
  • the circuit channel formed on the second end cover includes an anode positioning hole formed on the inner layer plate of the second end cover and the outer layer plate, and the conductive studs are sequentially opened through An anode positioning hole on the outer layer plate of the second end cover and the inner layer plate, and an externally threaded portion of the conductive stud is matched with an anode screw hole formed on the anode, a positioning screw hole is formed in a portion of the conductive stud away from the anode, and an externally threaded portion of the conductive screw is matched with the positioning screw hole, and a head of the conductive screw is sandwiched between the conductive stud and the conductive stud Holding wires electrically connected to the anodes of the high frequency high voltage generator;
  • first end cover and the second end cover are respectively provided with a fluid passage
  • first end cover and the second end cover are respectively an outer layer and an inner layer which are superposed on each other a double-layer structure formed by the plate, a liquid flow chamber exists between the outer layer plate and the inner layer plate, and the outer layer plate and the inner layer plate are respectively open to communicate with the liquid flow chamber a flow guiding hole, wherein the fluid passage is composed of the flow guiding hole and the liquid flow chamber
  • the anode is in the shape of a cover and is disposed on an end of the glass cover of the X-ray tube away from the cathode, and a liquid flow space exists between the anode and the circumferential outer surface of the glass cover of the X-ray tube. Liquid circulation holes respectively communicating with the liquid flow space and the flow guiding holes on the inner layer plate on the second end cover are opened.
  • FIG. 1 is a schematic view showing a connection relationship between electronic components in an X-ray generator according to an embodiment of the present invention
  • FIG. 2 is a perspective schematic view showing a partial structure of a three-dimensional structure of a radiation device mounting box according to an embodiment of the present invention
  • FIG. 3 is a partial cross-sectional elevational view of an X-ray generator according to an embodiment of the present invention
  • Figure 4 is an enlarged schematic view of a portion of the sealing strip provided in Figure 3;
  • Figure 5 is a cross-sectional view taken along line A-A of Figure 3;
  • Figure 6 is a cross-sectional view showing the inner layer of the second end cover of Figure 5;
  • Figure 7 is a top plan view of the inner layer of the second end cap shown in Figure 6;
  • Figure 8 is a cross-sectional enlarged view of the junction of the convex edge, the elastic tympanic membrane and the second cover of Figure 5;
  • Figure 9 is a cross-sectional view of Figure 3 taken along line B-B;
  • FIG. 10 is a schematic elevational view of a radiation device mounting box according to an embodiment of the present invention.
  • Figure 11 is a top plan view of the radiation device mounting box of Figure 9;
  • Fig. 12 is a perspective view showing the anode portion of the X-ray tube in the mounting box of the radiation device according to the embodiment of the present invention.
  • Fig. 13 is a bottom view showing the anode portion of the X-ray tube shown in Fig. 12. detailed description
  • the embodiment of the invention provides an X-ray which can effectively prevent the X-ray tube from being emitted from the box body to the periphery of the box body, has light weight and small occupied space, and the compensation device (for example, elastic tympanic membrane) is conveniently installed, and the compensation device consumes materials.
  • the compensation device for example, elastic tympanic membrane
  • the guard device 3 is made of a material having a shielding function for X-rays, and there is a liquid flow and a component mounting space between the guard device 3 and the box body 1, and the collimator 2 and the guard device 3 are an integral structure, the collimator 2
  • the two parts of the box 1 are detachably and fixedly connected together.
  • the guard device 3 is provided with a radiation outlet 36 as shown in FIG. 5, and a beam exit hole (which coincides with the radiation outlet 36 in FIG. 5) is opened on the collimator 2, and the beam opening 11 is opened on the casing 1, and the radiation outlet 36 is provided.
  • the beam exit hole and the exit beam port 11 are coaxial.
  • the protective device 3 is disposed in the casing 1 provided by the embodiment of the present invention, it is of course also possible to provide a multi-layered protective device 3, which is made of a material (for example, lead oxide) having a shielding function for X-rays.
  • the guard device 3 is located in the casing 1.
  • the X-ray tube 4 is located in the guard device 3 as shown in FIG. 5, the X-rays emitted by the X-ray tube 4 are sequentially passed through the coaxial ray outlet 36 as shown in FIG.
  • the hole and the exit port 11 emit the case 1.
  • the ray outlet 36, the beam exit hole and the exit beam port 11 are coaxial, and it can be understood that all three are coaxial or three.
  • the orthographic projections in the respective axial directions are all coincident. It can also be understood that the three parts are coaxial, that is, the orthographic projections of the three in the respective axial directions coincide, whether the three are all coaxial or part Coaxial, as long as the X-rays can be sequentially emitted through the radiation outlet 36, the exit aperture, and the exit port 11 to finally project out of the casing 1.
  • the size of the space can be appropriately set as needed.
  • the liquid flow and the installation space of the component can be mounted on the one hand to install electronic components, to fill the insulating liquid for enhancing the insulation properties between the electronic components and the heat dissipation performance, and on the other hand, the protection device 3 can be used without affecting heat dissipation and protection effects. Make smaller, saving material and reducing the size and weight of the cabinet.
  • the thickness of the guard 3 and the number of layers of the guard 3 may be based on X-rays.
  • the intensity of the X-rays emitted by the tube 4 is determined.
  • each of the guards 3 may be made of a material having a shielding function for X-rays, or a part of the layers of the guards 3 may be for X-rays. Made of a material with shielding function.
  • Each of the protective devices 3 is located in the casing 1, and the inner protective device 3 is located inside the outer protective device 3. The liquid flow and the component mounting space exist between the casing 1 and the outermost protective device 3.
  • the X-ray tube 4 is mounted in the innermost protective device 3.
  • the collimator 2 and the box 1 may also be a unitary structure.
  • the collimator 2 and the guard 3 are detachably and fixedly connected by two separate components (for example, using screws and bolts). connection).
  • the collimator 2, the casing 1 and the guard 3 do not exclude the possibility that the main body of the three or the three is divided into a unitary structure.
  • the guard device 3 in this embodiment has a cylindrical shape, and includes a cylinder 30, a first end cover 31 and a second end cover 32, a first end cover 31 and a second end.
  • the cover 32 is fixedly coupled to the two ports of the cylinder 30, and the first end cover 31 and the second end cover 32 are respectively provided with a fluid passage 312 and a circuit passage 311 as shown in FIG.
  • the above structure is simple, not only facilitates the assembly and formation of the protection device 3, but also facilitates the processing and manufacture of various components of the protection device 3, and also facilitates the smooth flow of the insulating liquid and the construction of the wires and the interface, and is advantageous for the smooth flow of the insulating liquid, so that the X-ray tube When mounted in the guard device 3, it is also advantageous to dissipate the heat of the X-ray tube 4 installed in the guard device 3, thereby improving the efficiency of cooling the X-ray tube 4.
  • the guard 3 may have other shapes such as a prism shape (including a rectangular parallelepiped, a rectangular parallelepiped), a truncated cone shape, and the like in addition to a cylindrical shape.
  • one or two of the circuit channel 311 and the fluid channel 312 shown in FIG. 5 may also be opened only on the cylinder 30.
  • the circuit channel 311 and the fluid channel 312 can also be respectively opened on the cylinder 30 and the first end cover 31 or the second end cover 32.
  • the first end cover 31 and the second end cover 32 are two-layer structures composed of an outer layer plate 331 and an inner layer plate 332 which are superposed on each other, wherein:
  • the communicating passage 335, the fluid passage 312 is composed of the guiding hole 334, the guiding hole 335 and the liquid flow chamber 333, and the orthographic projection of the guiding hole 334 on the outer layer 331 along the axial direction thereof and the inner layer
  • the flow holes 335 on the 332 are completely staggered.
  • the circuit channel 311 formed in the first end cover 31 of the embodiment includes a cathode positioning hole 313 formed on the inner layer plate 332 of the first end cover 31 and an outer layer plate 331 formed on the second end cover 32.
  • the wire hole 340 is a curved through hole.
  • the wire hole 340 preferably includes a longitudinal hole 342 which is coincident with or parallel with the axial direction of the guard 3 and is connected to the longitudinal hole 342 and the shaft.
  • a transverse hole 341 is oriented in a direction perpendicular to the axial direction of the longitudinal bore 342.
  • the first end cover 31 and the second end cover 32 of the above structure can ensure that the insulating liquid can flow into the cylinder 30 through the fluid passage 312 on the second end cover 32. It is also ensured that the insulating liquid can flow out of the guard device 3 through the first end cover 31, and more importantly: when the X-ray tube 4 is installed in the guard device 3, the flow guiding hole 334 on the outer layer plate 331 is along the same The orthographic projection in the axial direction is completely offset from the flow guiding hole 335 on the inner layer plate 332, and the fluid passage 312 forms a labyrinth structure, so that the X-rays emitted from the X-ray tube 4 pass through the flow guiding holes on the inner layer plate 332.
  • the circuit channel 311 in the above structure also forms a labyrinth structure, and the circuit channel 311 is While shielding the interface and the line construction, the X-ray can be effectively shielded from passing through the protection device 3.
  • the circuit channel 311 and/or the fluid channel 312 are in the above-described labyrinth structure, and the first end cover 31 and the second end cover 32 may not be provided in a two-layer structure.
  • the circuit channel 311 and/or the fluid The passage 312 may be a through hole of a curved shape (for example, a right-angled line shape) or an inclined hole (for example, a through hole having an acute angle or an obtuse angle in an axial direction and an axial direction of the guard 3, preferably an acute angle having a small angle value) Or an obtuse angle with a large angle value).
  • One of them may also be a through hole (for example, a right-angled line) or a slanted hole.
  • the first end cover 31 and the second end cover 32 can also form a circuit passage 311 and/or a fluid passage of the labyrinth structure. 312.
  • the oblique hole can also serve as a lead-out line or a flowing insulating liquid while blocking the radioactive rays from one of the two ports that partially or completely illuminate the oblique hole from the two ports.
  • the other of the ports is threaded out, especially when the ratio of the thickness dimension of the guard 3, the first end cap 31, and the second end cap 32 to the port size of the circuit channel 311 and/or the fluid channel 312 is relatively large.
  • the inner layer plate 332 shown in FIG. 6 and FIG. 7 is distributed at equal angles in the circumferential direction of the cylindrical body 30 as shown in FIG.
  • Two or more of the flow guiding holes 335, and the distance between each of the flow guiding holes 335 to the axial line of the cylindrical body 30 is the same.
  • the upper outer plate 331 on the second end cover 32 may also have a plurality of (two or more) flow guiding holes 334 equally distributed in the circumferential direction of the cylindrical body 30.
  • the flow holes 335 may also be distributed to the second end cap 32 in other arrangements.
  • the flow guiding holes 334 on the first end cover 31 can also be distributed in the above manner.
  • the air guiding holes 334 or the guiding holes 335 can also be only in the outer layer plate 331 or the inner layer plate 332 of the first end cover 31. One of them is distributed as described above.
  • the wire hole 340 on the outer layer plate 331 in the first end cap 31 in the present embodiment includes the axial direction of the cylinder 30 (the axial direction of the cylinder 30 is also the axial direction of the guard 3)
  • the longitudinal bore 342 and the transverse bore 341 are in communication with the longitudinal bore 342 and have an axial direction perpendicular to the axial direction of the longitudinal bore 342.
  • the transverse hole 341 and the longitudinal hole 342 form a right-angled line-shaped wire hole 340.
  • This structure ensures that the wire electrically connected to the cathode of the X-ray tube 4 (which wire can also be regarded as a part of the cathode) is taken out from the wire hole 340. At the same time, the X-rays emitted from the X-ray tube 4 do not pass through the wiring holes 340.
  • the longitudinal holes 342 may also be parallel to the axial direction of the cylinder 30, and the wire holes 340 may also be oblique holes or other curved (for example, acute or obtuse-angled) through holes.
  • the X-ray tube 4 is used to protect the sheath 315 of the cathode 41 from being embedded in the cathode positioning hole 313 of the inner layer plate 332 in the first end cover 31, and the wire retaining sleeve (which is usually made of copper material) electrically connected to the cathode 41. 315 leads out the guard 3.
  • the anode (or anode base) 42 in the X-ray tube 4 is fixed to the second by using a fastener made of a conductive material (the fastener in this embodiment uses a conductive stud 317 and a conductive screw 318 as shown in FIG. 5).
  • the anode 42 of the X-ray tube 4 passes through the fastener and the wire electrically connected to the fastener and the anode of the voltage doubler rectifier module 54 outside the guard 3 (the anode of the voltage doubler rectifier module 54 is also a high frequency
  • the anode of the high voltage generator 5 is electrically connected.
  • Fasteners made of electrically conductive materials also function electrically.
  • the anode 42 of the X-ray tube 4 is in the form of a cover and is disposed on the glass cover of the X-ray tube 4 at one end away from the cathode 41.
  • a liquid circulation hole 423 communicating with the liquid flow space 422 is opened in the anode 42. Insulating liquid outside the guard 3 in the structure The guard 3 is flowed in or out through the fluid flow hole 423 as shown in FIG. 12 or FIG.
  • the axial direction of the liquid circulation hole 423 in this embodiment is preferably parallel to the axial direction of the X-ray tube 4.
  • one, two or more circumferential screw holes 420 may be opened in the circumferential outer surface of the anode 42, and the screws passing through the cylinder 30 and embedded in the circumferential screw holes 420 are at the anode 42.
  • the anode 42 is fixed in the guard 3 in the circumferential direction.
  • the above structure has the advantages of simple installation, convenience, and reliable connection.
  • the number of the flow guiding holes 335 distributed on the inner layer plate 332 on the second end cover 32 is preferably the same as the number of the liquid flow holes 420 on the anode 42 in the X-ray tube 4.
  • the number of both is also Inconsistent, the above structure is advantageous for the lower temperature insulating liquid to first flow to the vicinity of the anode 42 in the X-ray tube 4, thereby preventing the temperature of the target embedded on the anode 42 of the X-ray tube 4 from being too high and burning out.
  • the guard 3 is made of a material having both protection and insulation properties. Since the above structure can effectively avoid X-ray leakage when the X-ray tube 4 is installed in the shield device 3, it can avoid the X-ray tube 4 loaded with the high voltage and the electronic component or module that supplies the high voltage to the X-ray tube 4. (For example, the high voltage transformer 53 and the voltage doubler rectifier module 54 in the high frequency high voltage generator 5 shown in Fig. 1) cause a sparking or short circuit failure in the casing 1.
  • the inner tube 301 is embedded in the cylinder 30, and the inner threaded tube 301 is internally provided with an internal thread.
  • the portion of the connecting bolt 302 having the external thread passing through the outer layer 331 and the inner portion of the inner threaded tube 301 The threads cooperate to securely couple the barrel 30 to the first end cap 31 and the second end cap 32.
  • the threaded connection structure of the connecting bolt 302 and the internally threaded tube 301 securely connects the barrel 30 with the first end cap 31 and the second end cap 32.
  • the embedded internally threaded tube 301 is preferably made of a high temperature resistant metal material, which can be before the barrel 30 is completely formed. It is embedded in the production cylinder 30.
  • the inner layer plate 332 is fixed with a positioning protrusion 321 , and the positioning protrusion 321 is embedded in the positioning counterbore (not labeled in the figure) on the outer layer plate 331 and is positioned with the countersink. Tight fit.
  • the positioning boss 321 and the inner layer plate 332 are preferably of a unitary structure.
  • the stepped portion 304 is formed on the inner side edge of the cylindrical body 30, and the step portion 304 abuts against the edge of the inner layer plate 332.
  • the beam opening 11 is filled with a sealing window 12 as shown in FIG. 3 or as shown in FIG. 10, and the sealing window 12 is made of X-ray permeable material, and the sealing window 12 is closed. Having liquid-tightness between the inside of the casing 1 and the outside of the casing 1 The function of the seal.
  • the sealing window 12 seals the outlet opening 11 to prevent outside air and dust from entering the casing 1 on the one hand, and liquid flow between the shielding device 3 and/or the shielding device 3 and the casing 1 on the other hand.
  • the sealing window 12 can also prevent the insulating liquid from flowing out of the casing 1 from the outlet port 11.
  • the shielding device 2 is filled with an insulating liquid, the X-rays emitted from the X-ray tube 4 penetrate the insulating liquid and are irradiated from the sealing window 12 to the outside of the casing 1. Since the X-ray tube 4 emits high X-ray intensity, Therefore, the loss of the insulating liquid to X-rays is very small and can usually be neglected.
  • the possibility of not providing the blocking window 12 is not excluded.
  • the port of the shielding device 3 is closely abutted as shown in FIG.
  • the radiation outlet 36, the exit aperture (coincidence with the radiation exit 36), the exit port 11 and the glass cover of the X-ray tube 4 constitute an insulating liquid sealed chamber, the insulating liquid cannot pass from the X-ray tube 4 and the guard 3 The gap between them penetrates into the ray outlet 36, the exit aperture, and the exit port 11.
  • the insulating material in this embodiment is preferably lead tetraoxide. Plates or containers made of lead tetraoxide have a strong shielding function for X-rays.
  • the insulating material may also use lead oxide other than lead trioxide, which has low density and high strength compared with a material having a strong shielding function for X-rays such as lead or lead-bismuth alloy. Excellent electrical insulation performance and radiation protection performance.
  • the box body 1 of the embodiment includes a box body portion 13, a first box cover 14, and a second box cover 15, wherein: the first box cover 14 and the second box cover 15 are respectively fixed On the two ports of the tank body portion 13, the tank body portion 13 is of a unitary structure, and the materials of the first tank cover 14 and the second tank cover 15 are the same as those of the tank body portion 13.
  • the box body portion 13 of the unitary structure is not only simple in structure, but also has good joint strength between the parts, is easy to manufacture by a single molding process, and is relative to the box body portion 13 which is formed by splicing of sheets (usually by screwing or welding).
  • the box body portion 13 of the one-piece structure has a better sealing effect. It has better anti-leakage performance for insulating liquid and X-ray.
  • the process of using X-ray generator especially the method of vacuum oiling into the tank 1 (the method of vacuum oiling is shown by the oil hole shown in Figure 3). After the insulating liquid is filled in, the oil filling hole 112 is sealed by using the gasket and the sealing bolt 113.
  • the box body portion 13 may also be formed by welding or screwing a separate split structure. At this time, the materials of the first box cover 14, the second box cover 15, and the box body portion 13 may be different.
  • FIG. 4 and FIG. 5 between the first cover 14 and the case body portion 13 in this embodiment, and as shown in FIG. Between the second cover 15 and the case body portion 13, there is further provided a sealing strip 345 as shown in FIG. 4, and the sealing strip 345 is made of a rubber material, wherein:
  • the end surface of the box body portion 13 is provided with a stepped surface 346 or a groove as shown in FIG. 4, and the sealing strip 345 is embedded in the stepped surface 346 or the recess and extends out of the end surface of the box body portion 13, the first cover 14 and the second cover.
  • the surface of the box cover 15 near the box body portion 13 is pressed against the weather strip 345.
  • the sealing strip 345 is squeezed, so the sealing strip 345 and the first cover 14 As the box body portion 13 abuts more closely, it can provide a better sealing effect.
  • the sealing strip 345 may also be made of other elastic materials other than the rubber material, and the position may be disposed only between the first cover 14 and the case body portion 13 or only on the second cover 15 . Between the box body portion 13.
  • the stepped surface 346 or the groove as shown in FIG. 4 can also be opened on the first cover 14 and/or on the edge of the second cover 15 as shown in FIG. 5, at which time the sealing strip 345 is embedded in the stepped surface 346.
  • the box body portion 13 shown in Fig. 5 is made of a high-strength, lightweight aluminum or aluminum alloy material by a stretch forming process.
  • the stretch forming process has a relatively high manufacturing efficiency, and at the same time, it can avoid the deformation of the welded structure and cause leakage.
  • the cabinet can also use processes such as wire cutting or other materials.
  • the aluminum alloy material case 1 and the guard device 3 in the present embodiment are superior in volume and weight to the similar products of the prior art, so the radiation device mounting box provided in this embodiment is further It has the advantages of light weight, easy processing, assembly and handling.
  • the oil-cooled circulation system provided by the embodiment of the present invention includes a liquid filling tank, an insulating liquid filled in the liquid filling tank, and a cooling device 72 for reducing the temperature of the insulating liquid, and the cooling device 72
  • An oil pump 721, a radiator 722, and a cooling fan 723 are included, wherein:
  • the liquid filling tank is constituted by the radiation device mounting box provided by the above embodiment of the present invention.
  • the radiator 722 is located outside the liquid filling tank, and the liquid inlet of the radiator 722 is in communication with the liquid outlet of the liquid filling tank, and the liquid outlet of the radiator 722 is in communication with the liquid inlet of the liquid filling tank.
  • the oil pump 721 provides power for circulating flow between the insulating liquid in the liquid filled tank and the insulating liquid in the radiator 722.
  • the cooling fan 723 releases heat on the heat sink 722 by accelerating the flow of air around the heat sink 722.
  • the insulating liquid is 25# transformer insulating oil, and the insulating liquid can not only serve as an insulating medium to avoid breakdown or short circuit failure of various components or modules loaded with high voltage, but also function as a heat dissipating medium.
  • insulating liquids other than 25 # transformer insulating oil can also be used for the insulating liquid.
  • the X-ray tube 4 can only convert about 1% of the energy into X-rays, and the rest about 99% of the energy is converted into thermal energy and acts on the anode 42 of the X-ray tube 4. Therefore, in order to prevent the anode 42 of the X-ray tube 4 If the target is melted and damaged by overheating, it needs to be cooled by the external oil pump 721 and the radiator 722, and finally the cooled insulating liquid is returned to the anode 42 of the X-ray tube 4 to achieve the heat dissipation effect.
  • the external power supply 8 of the cabinet shown in Fig. 1 is 220V AC mains.
  • the external power supply 8 of the cabinet can also be a power source or a battery commonly used in the factory.
  • the insulating liquid which is freely flowing between the tank 1 and the guard 3 in the guard 3 by the fluid passage 312 as shown in FIG. 5 will be driven by the power provided by the oil pump 721 as shown in FIG. 3 or FIG.
  • the heat generated by the X-ray tube 4 (heat generated mainly by the anode 42 of the X-ray tube 4) in the inside of the box 1 and the inside of the cabinet 1 is transferred to the radiator 722, and then released by the flowing air, and then passed through.
  • the insulating liquid cooled by the radiator 722 is reintroduced into the guard 3 and between the casing 1 and the guard 3, and the heat generated by the X-ray tube 4 is again absorbed.
  • the cooling system When designing the cooling system, it is necessary to consider not only the heat dissipation efficiency of the tank 1, the guard 3, the radiator 722, and the insulating liquid, but also the power consumption of the oil pump 721 as shown in FIG. 3 or FIG. 9 to design the heat dissipation performance.
  • the cooling system required for the overall heat dissipation of the X-ray generator.
  • the oil pump 721 can also provide power only for the circulatory flow between the insulating liquid in the guard 3 or one of the tanks 1 and the insulating liquid in the radiator 722.
  • the oil pump 721 is fixed on the inner wall of the casing 1 (preferably fixed to the first casing 14 by screws or bolts), and is located in the casing 1 and the protection device 3. between.
  • the installation space between the cabinet 1 and the guard 3 is relatively sufficient, and the oil pump 721 is suitable.
  • the liquid suction port of the oil pump 721 faces the liquid outlet of the protection device 3, and the liquid inlet of the protection device 3 communicates with the liquid inlet pipe 35, and the liquid inlet 111 of the casing 1 and the liquid inlet
  • the tube 17 is in communication with the outlet port 170 of the inlet tube 17 facing the inlet port 350 of the inlet tube 35.
  • the oil pump 721 sucks away from the liquid outlet of the guard 3 through the insulating liquid with more heat, and outputs it from the tank 1 to the radiator 722 as shown in FIG. .
  • the piping, the inlet pipe 35, and the inlet pipe 17 allow the flow of the insulating liquid to be smoother.
  • the liquid suction port of the oil pump 721 and the liquid outlet of the guard 3 and/or the inlet pipe 17 may also be connected through a pipe.
  • the oil pump 721 may be fixed in the radiator 722, or may be partially fixed between the liquid filling tank and the guard 3, and partially fixed in the radiator 722.
  • the number of the oil pumps 721 is plural (two or more), one or several of them may be located in the radiator 722, and the other one or several of them may be located between the liquid filling tank and the guard 3.
  • the oil pump 721 in this embodiment is a DC brushless submersible pump, which has the advantages of good sealing, low noise, low power consumption, stable performance and long service life.
  • the cooling fan 723 shown in Fig. 9 can also use another type of refrigerating device (e.g., a refrigerating device used in a refrigerator or a freezer) to replace the use of the airflow to dissipate heat by directly cooling the radiator 722.
  • the cooling device 72 in this embodiment further includes a frame-shaped bracket 724 that is disposed outside the heat sink 722 and the cooling fan 723.
  • the bracket 724 is fixed to two separate components of the casing 1. connected.
  • the bracket 724 is welded using a small density aluminum alloy tube body, and the structure consumes less material, and not only protects the heat sink 722 and the cooling fan 723, but also serves as a handle for the user to move the device.
  • bracket 724 can also be made of other materials, or can be welded by a solid rod or connected by a bolt or a screw to a connecting structure formed by a screw hole in the rod. Bracket 724 can also be replaced by other shields with good ventilation.
  • the X-ray generator provided by the embodiment of the present invention includes an X-ray tube 4, a high-frequency high-voltage generator 5, a filament power supply module 6, and the oil-cooling provided by any of the above embodiments of the present invention.
  • the X-ray tube 4 is installed in the shielding device 3 in the radiation device mounting box, and the X-rays emitted from the X-ray tube 4 are sequentially passed through the radiation outlet 36 and the beam exit hole (with the radiation exit) as shown in FIG. 36 coincides) and the exit port 11 and illuminate the case 1 of the radiation device mounting box.
  • the high frequency high voltage generator 5 is electrically connected to the cathode 41 of the X-ray tube 4 and the anode 42 for supplying a DC voltage to the anode 42 of the X-ray tube 4 and its cathode 41.
  • the filament power supply module 6 is electrically connected to the cathode 41 of the X-ray tube 4, and the filament power supply module 6 is used to supply the cathode 41 of the X-ray tube 4 with a sufficient amount to cause the cathode 41 of the X-ray tube 4 to be bombarded to the anode under the action of a high voltage electric field.
  • the high frequency pulse voltage of the electron flow of 42 is electrically connected to the cathode 41 of the X-ray tube 4 and the anode 42 for supplying a DC voltage to the anode 42 of the X-ray tube 4 and its cathode 41.
  • the filament power supply module 6 is electrically connected to the cathode 41 of the X-ray tube 4, and the filament power supply
  • the protection device 3 is further provided with a circuit channel 311 as shown in FIG. 5.
  • the cathode of the high-frequency high-voltage generator 5 shown in FIG. 1 is electrically connected to the cathode 41 of the X-ray tube 4 by a wire passing through the circuit channel 311.
  • the anode of the high-frequency high-voltage generator 5 is electrically connected to the anode 42 of the X-ray 4 through a wire electrically connected to the conductive screw 318 and the conductive stud 317; the filament power supply module 6 is connected to the X-ray tube 4 through the wire of the circuit channel 311
  • the cathode 41 is electrically connected.
  • the power supply 8 and the remaining modules of the modules constituting the high-frequency high-voltage generator 5 are located outside the casing 1.
  • the casing 1 is provided with a line passage 16 as shown in FIG. 3, which constitutes a high-frequency high-voltage generator as shown in FIG.
  • the module located in the casing 1 of the module 5 is electrically connected to the remaining module outside the casing 1 by an interface passing through the outlet passage 16.
  • all of the modules constituting the high-frequency high-voltage generator 5 in the present invention may be disposed in the cabinet 1 and the protection device 3.
  • the electronic device and the external power supply circuit and the remote communication signal transmitting circuit required are electrically connected through the interface of the outgoing channel 16.
  • the above-mentioned wires for electrical connection can also be replaced by an interface, and the interface can also be replaced with a wire.
  • modules in the module constituting the high-frequency high-voltage generator 5 shown in FIG. 1 in this embodiment may also be located in the protection device 3, and at this time, constitute a module of the high-frequency high-voltage generator 5 shown in FIG.
  • the module located in the protection device 3 and the module constituting the high-frequency high-voltage generator 5 shown in FIG. 1 are located between the casing 1 and the protection device 3 or a part of the module outside the casing 1 by the circuit passage 311 or by The cables or interfaces of the circuit channel 311 and the outgoing channel 16 are electrically connected.
  • the first end cover 31 and the second end cover 32 are double-layered structures composed of an outer layer plate 331 and an inner layer plate 332 which are superposed on each other, and the first end cover 31 and the second end cover
  • the circuit channel 311 is formed on the first end cover 31 and includes a cathode positioning hole 313 formed on the inner layer plate 332 of the first end cover 31 and a second end cover 32.
  • the wire hole 340 on the upper outer plate 331 and the wire sleeve 314 outside the cathode 41 in the X-ray tube 4 are embedded in the cathode positioning hole 313.
  • the wire hole 340 includes an axial direction of the guard 3 or The parallel longitudinal holes 342 and the transverse holes 341 communicating with the longitudinal holes 342 and having an axial direction perpendicular to the axial direction of the longitudinal holes 342, the retaining sleeve 315 of the cathode 41 in the X-ray tube 4 is embedded in the longitudinal holes 342
  • the cathode 41 of the X-ray tube 4 is two wires that lead out the lateral hole 341 from the sheath 315;
  • the circuit channel 311 formed on the second end cover 32 includes an anode positioning hole 316 formed on the inner layer plate 332 of the second end cover 32 and the outer layer plate 331.
  • the conductive stud 317 is sequentially opened through the second end.
  • the outer layer plate 331 of the cover 32 and the anode positioning hole 316 on the inner layer plate 332, and the externally threaded portion of the conductive stud 317 cooperates with the anode screw hole formed on the anode 42, and the conductive stud 317 is away from the anode.
  • a portion of the 42 is provided with a positioning screw hole, and the externally threaded portion of the conductive screw 318 is matched with the positioning screw hole, and the head of the conductive screw 318 and the conductive stud 317 are clamped with the high frequency high voltage generator 5 A wire that is electrically connected to the anode.
  • the second end cover 32 is provided with at least one positive limit hole 320 on the inner layer plate 332 as shown in FIG. 6, and the finite position screw hole 424 is formed on the anode 42 as shown in FIG. 12 and FIG.
  • the externally threaded portion of the column 421 is matched with the limiting screw hole 424.
  • One end of the positioning stud 421 away from the limiting screw hole 424 is inserted into the positive limiting hole 320.
  • the positioning stud 421 and the positive limiting hole 320 are disposed.
  • the number of the positioning studs 421 and the positive limit holes 320 may also be one or three or more.
  • the first end cover 31 and the second end cover 32 are respectively provided with a fluid passage 312.
  • the first end cover 31 and the second end cover 32 are both an outer layer plate 331 and an inner layer plate 332 which are superposed on each other.
  • the inner layer plate 332 is provided with a flow guiding hole 335 communicating with the liquid flow chamber 333, and the outer layer plate 331 is opened.
  • the fluid passage 312 is composed of a flow guiding hole 334, a flow guiding hole 335 and a liquid flow chamber 333.
  • the anode 42 is in the shape of a cover and is disposed on the glass cover of the X-ray tube 4 at one end away from the cathode 41.
  • the anode 42 is provided with a liquid circulation hole 423 communicating with the liquid flow space 422.
  • the axial direction of the liquid circulation hole 423 is preferably parallel to the axial direction of the X-ray tube 4, and the insulating liquid outside the protection device 3 passes through the fluid passage 312 and the fluid circulation hole 423 on the second end cover 32.
  • the liquid flow space 422 flows into or out of the guard device 3.
  • one, two or more circumferential screw holes 420 may be opened in the circumferential outer surface of the anode 42, and the screws passing through the cylinder 30 and embedded in the circumferential screw holes 420 are at the anode 42.
  • the anode 42 is fixed in the guard 3 in the circumferential direction.
  • the transverse hole 341 and the longitudinal hole 342 form a right-angled line-shaped wire hole 340.
  • This structure ensures that the X-ray emitted from the X-ray tube 4 cannot pass through the wire hole 340 while the wire is drawn from the wire hole 340.
  • the wire hole 34 can also be a slanted hole or other curved (e.g., acute or obtuse-angled) through hole.
  • the liquid outlet of the guard 3 is located on the fluid passage 312 of the first end cap 31, and the inlet of the guard 3 is located on the fluid passage 312 of the second end cap 32.
  • the heat emitted by the X-ray tube 4 is mainly derived from the anode 42 thereof, when the liquid inlet of the guard 3 is located on the second end cap 32, the inlet port is closer to the anode 42 of the X-ray tube 4.
  • the lower temperature insulating liquid first contacts the anode 42 of the X-ray tube 4 and carries away the heat on the anode 42 of the X-ray tube 4, preventing the anode target of the X-ray tube 4 from being burnt out due to too much heat.
  • the target is located in the glass cover as shown in Figure 12 and emits X-rays from the right side (center line Show) the location.
  • the module constituting the high-frequency high-voltage generator 5 shown in FIG. 1 in this embodiment includes a rectifying voltage regulating module 51, a high-frequency inverter 52, a high-voltage transformer 53, and a voltage doubler rectifying module 54 which are electrically connected in sequence, wherein:
  • the voltage regulating module 51 is electrically connected to the external power supply 8 of the cabinet, and the rectifying voltage regulating module 51 is used for obtaining the electric energy required to maintain the DC high voltage on the cathode 41 and the anode 42 of the X-ray tube 4 from the external power source 8 of the tank.
  • the voltage doubler rectifier module 54 is electrically connected to the cathode 41 and the anode 42 of the X-ray tube 4, respectively.
  • the high voltage transformer 53 and the voltage doubler rectifier module 54 constituting the high frequency high voltage generator 5 are fixed between the casing 1 and the protection device 3 shown in FIG. 2, and the high voltage transformer 53 shown in FIG. On the straightener 2, of course, it can also be fixed on the PCB board, the first cover 14 or the second cover 15.
  • the voltage doubler rectifier module 54 is fixed on the circuit board, and at least one end of the two ends of the circuit board (the one with a higher position height shown in FIG. 3 ) and the limiting tab 145 fixed on the first cover 14 or
  • the limiting tabs 145 on the second cover 15 (shown in FIG. 3 as the limiting tabs 145 on the first cover 14) abut each other, and the circuit board is fixed by fasteners (preferably made of nylon material). On the limiting tab 145.
  • the fixed connection between the circuit board and the box 1 with the voltage doubler rectifier module 54 is provided.
  • at least one end of the two ends of the circuit board may be embedded in the first cover 14 or
  • the recess in the second cover 15 and the central portion of the circuit board are fixed to the case body portion 13 by fasteners.
  • the fasteners are used to prevent the board from vibrating or deforming, thereby preventing the voltage doubler rectifier module 54 from being damaged by vibration.
  • the above-mentioned fixing and assembling means for the modules constituting the high-frequency high-voltage generator 5 shown in Fig. 1 are compact in structure, and can fully utilize the space in the casing 1.
  • the voltage doubler rectifier module 54 can also be fixed to the surface of the guard 3.
  • the high voltage transformer 53 can also be fixed to the side of one of the first cover 14 or the second cover 15 that is in contact with the insulating liquid.
  • the rectification voltage regulating module 51 is fixed outside the casing 1, and includes a full bridge rectifier module and a BUCK chopper voltage regulating module.
  • the full bridge rectifier module converts the AC power provided by the external power supply 8 of the cabinet into DC power.
  • the BUCK Chopper Voltage Regulation Module is used to convert a fixed DC voltage into a variable DC voltage, that is, DC/DC conversion, and then input to the high frequency inverter 52.
  • the high frequency inverter 52 is also fixed outside the casing 1. It uses a full bridge series-parallel resonant high frequency inverter circuit to invert the low voltage DC current into a high frequency low voltage alternating current.
  • the high voltage transformer 53 is for boosting the voltage output from the high frequency inverter 52 and input it to the voltage doubler rectifier module 54.
  • the voltage doubler rectifier module 54 adopts multiple stages (two or more voltage doubler rectifier circuits, and the voltage doubler rectifier module 54 functions as boosting and rectifying (AC to DC).
  • the high voltage transformer 53 and the voltage doubler rectifier module 54 are usually loaded with a high voltage of more than kilovolts, the high voltage When the transformer 53 and the voltage doubler rectifier module 54 are fixed between the casing 1 and the guard 3 and immersed in the insulating liquid, the insulating liquid can prevent not only high voltage breakdown on the high voltage transformer 53 and the voltage doubler rectifier module 54, but also The heat generated can also be carried away by the flowing insulating liquid.
  • the X-ray generator in this embodiment further includes a monitoring system, and the monitoring system includes a signal sampling module 91, a sampling signal processing module 92, a logic determination control module 93, and a logic judgment as shown in FIG.
  • the auxiliary power module 94 powered by the control module 93.
  • the signal sampling module 91 is located between the casing 1 and the guard 3.
  • the installation space between the cabinet 1 and the guard 3 is large, so it is suitable to install the signal sampling module 91.
  • the signal sampling module 91 can also be installed in the protection device 3.
  • the signal sampling module 91 is configured to detect an electrical signal on the cathode 41 and the anode 42 of the X-ray tube 4, a temperature of the insulating liquid, and a flow rate of the insulating liquid flowing into the casing 1, and send the detected electrical signal to the sampling signal processing module. 92.
  • the sampling signal processing module 92 is electrically connected to the signal sampling module 91 and the logic determination control module 93, respectively.
  • the sampling signal processing module 92 is configured to perform filtering and the like on the electrical signal received from the signal sampling module 91, eliminate relevant interference signals, and convert the electrical signal analog to digital (for example, binary) detection results, and then send to The logic judges the control module 93.
  • the logic judgment control module 93 realizes external data interaction through the serial communication interface 95 as shown in FIG. 1.
  • the logic judgment control module 93 can also be realized by transmitting or receiving a wireless signal through other communication interfaces or wires.
  • the logic judgment control module 93 may not output the detection result, but according to the preset detection result and the control instruction corresponding rule, automatically call the pre-stored control instruction according to the detection result, and control the high-frequency high-voltage generator 5 according to the control instruction. Some or all of the output voltage and/or current, the output voltage and/or current of the filament power supply module 6, and the power consumption of the oil pump 721. This implementation is highly automated.
  • the signal sampling module 91 includes a kV/mA sampling circuit 911, a temperature sensor 912, and a flow sensor 913, wherein:
  • the kV/mA sampling circuit 911 is for detecting the voltage and/or current on the high voltage circuit formed by the cathode 41 and the anode 42 of the X-ray tube 4.
  • the kV/mA sampling circuit 911 mainly includes a kV high voltage divider, an mA sampling resistor, and Flashover transformer.
  • the kV/mA sampling circuit 911 is integrated with the voltage doubler rectifier module 54 as shown in FIG. 2.
  • the kV/mA sampling circuit 911 can also be a separate two parts from the voltage doubler rectifier module 54, only with the voltage doubler rectifier module. 54 electrical connection.
  • Temperature sensor 912 is used to detect the temperature of the insulating liquid.
  • Flow sensor 913 is used to detect the flow of insulating liquid through fluid passage 312 as shown in FIG.
  • the electrical signals sent by the temperature sensor 912 and the flow sensor 913 are in the form of a switch (binary). In this case, analog-to-digital conversion is not required, which reduces the workload of the sampled signal processing module 92.
  • temperature sensor 912 and the flow sensor 913 are in the form of a switch (binary). In this case, analog-to-digital conversion is not required, which reduces the workload of the sampled signal processing module 92.
  • temperature sensor 912 and the flow sensor 913 are in the form of a switch (binary).
  • analog-to-digital conversion is not required, which reduces the workload of the sampled signal processing module 92.
  • the electrical signal sent by the flow sensor 913 can also be in the form of an analog quantity.
  • the types of fault signals collected by the signal sampling module 91 include a flow fault signal, a temperature fault signal, and a flash fault signal, where:
  • the electrical signal fed back to the sampling signal processing module 92 to reflect the over-limit traffic is regarded as a traffic fault signal.
  • the temperature exceeds a predetermined value, then the feedback is The electrical signal to the sampled signal processing module 92 to reflect the over temperature is considered a temperature fault signal. If the collected voltage and / or current value is abnormal, it can be judged whether there is a flashover fault based on the abnormal voltage and / or current value, so that the abnormal voltage and / or current value is regarded as a flashover fault signal.
  • the flow sensor 913 is fixed on the liquid inlet pipe 17 of the casing 1, and the insulating liquid entering the casing 1 from the radiator 722 passes through the inlet pipe 17, so that it can be disposed on the inlet pipe 17.
  • the flow rate of the insulating liquid entering the tank 1 is accurately detected.
  • the flow sensor 913 can also be fixed to the liquid outlet 110 of the casing 1. At this time, the flow rate of the insulating liquid flowing out of the casing 1 can be detected, and since the amount of the insulating liquid in the casing 1 is constant, Therefore, by detecting the flow rate of all the insulating liquid flowing out of the casing 1, the flow rate of the insulating liquid entering the casing 1 can also be reversed.
  • the temperature sensor 912 is fixed near the outlet passage 16 of the casing 1, and at this time, the temperature sensor 912 is more easily taken out from the outlet passage 16.
  • the filament power supply module 6 shown in FIG. 1 includes a rectifying voltage regulating module 61 electrically connected to the logic judging control module 93, a filament inverter 62, and a cathode of the filament inverter 62 and the X-ray tube 4, respectively. 41 electrically connected filament transformer 63;
  • the filament inverter 62 has a half bridge structure, and the filament transformer 63 is fixed at a position where the inner wall of the tank body portion 13 is close to the first cover 14 as shown in FIG. 2, and the filament transformer 63 is a step-down transformer for The voltage output from the filament inverter 62 is converted into a high-frequency pulse voltage required for the cathode 41 of the X-ray tube 4, and is output to the cathode 41 of the X-ray tube 4.
  • the interface through the outlet passage 16 on the casing 1 shown in FIG. 3 is an aviation plug 161 having a function of realizing a liquid-gas seal between the casing 1 and the outside of the casing 1, a high-voltage transformer 53 and a high-frequency inverter. Between 52, between the signal sampling module 91 and the sampling signal processing module 92, and between the filament inverter 62 and the filament transformer 63 are electrically connected by an aviation plug 161.
  • the voltages applied to the rectifier voltage regulator module 51, the high frequency inverter 52, and the logic determination control module 93 are both low.
  • the voltage regulating module 2, the filament inverter 62 and the auxiliary power module 94 are all fixed on the outer surface of the casing 1.
  • the rectifier voltage regulating module 51, the high frequency inverter 52, and the rectifier voltage regulating module 2 The filament inverter 62 and the logic determination control module 93 can also be fixed in the control box outside the box 1.
  • the control box can be fixed on the outer surface of the box 1 or can be separately placed on other frames or On the chassis, the relevant electrical signals drawn from the control box can be electrically connected to the aviation plug 161 as shown in FIG. 3 by wires passing through the control box.
  • the aviation plug 161 has the advantages of good sealing effect, and is easy to install and stable in electrical signal transmission.
  • the interface can also be a combination of a seal such as a wire and a seal.
  • the high voltage transformer 53 and the high frequency inverter 52 may also be partially electrically connected through the aviation plug 161, part of Electrically connected by cable or other interface.
  • the collimator 2 is provided with two or more screw holes 21, and the box body 1 is provided with a mounting hole coaxial with the screw hole 21, and the box body 1 (the box body shown in FIG. 5)
  • the portion 13) is fixedly coupled to the collimator 2 by screws that sequentially pass through the mounting holes and the screw holes 21.
  • connection structure formed by the screw hole 21 and the screw is convenient for assembly and disassembly.
  • the oil pump 721, the filament transformer 63, the circuit board provided with the voltage doubler rectifier module 54 and the aviation plug 161 are first integrated on the first cover 14 and then the X-ray is applied.
  • the tube 4 is installed between the first end cover 31 and the second end cover 32 of the guard device 3, and completes the relevant electrical connection, is integrally pushed into the box body 1, and then the guard device 3 (including the collimator 2) is fixed by screws.
  • the tank body portion 13 is further connected to the oil inlet pipe 17 and the oil outlet port 110, and finally the first tank cover 14 and the second tank cover 15 are sealingly fixed to the tank body portion 13.
  • the screw can also be replaced by other threaded fasteners such as bolts or studs.
  • the number of the screw holes 21 can be one, one or more rows (two rows or more), and the specific number can be It is determined according to actual needs (such as the size of screws or bolts that are convenient to be used at the installation site).
  • the radiation device mounting box in the embodiment includes the box body 1 described above, and further includes a flange 18 and a flange-shaped flange fixed on the inner wall of the box body 1 and the flange 18 .
  • a liquid-tight connection or a liquid-tight active connection compensation device wherein:
  • a liquid receiving chamber for accommodating an insulating liquid is formed between one of the two sides of the compensating device and the inner wall of the casing 1 and the flange 18;
  • a compensating device movable space is formed between the inner wall of the case 1 opposite the other of the two sides of the compensating device and the inner wall of the ledge 18 to allow the compensating means to deform or move in a direction away from or in proximity to the insulating liquid.
  • the compensation device can be separately assembled on the flange 18 on the second cover 15 and assembled into a complete case.
  • the assembly of the compensation device can be separated from the assembly of the case.
  • the convex edge 18 When performing separately, not only is the installation labor-saving and convenient, but also not easy to make mistakes, and since the height of the convex edge 18 can be designed as needed, the depth and size of the movable space of the compensation device can also be designed as needed, and the convex edge 18 is not only fixed.
  • the function of the compensating device at the same time, it also has a guiding effect on the deformation or moving direction of the compensating device, and the deformation or moving direction of the compensating device will be more regular.
  • the inner diameter of the flange 18 is smaller than the second cover 15, the area of the compensation device required in the present invention is smaller than that of the second cover 15, and the material consumed by the compensation device is also relatively small.
  • the connection operation of the flange 18 and the compensating device is performed in the casing 1, and the liquid sealing effect is ideal.
  • the compensating device is an elastic tympanic membrane 19 which is fixedly connected to the port of the flange 18 away from the inner wall of the casing 1 and covers the port of the flange 18 away from the inner wall of the casing 1 as shown in FIG. 5 or FIG. It can be deformed in the moving space of the compensating device in a direction away from or close to the insulating liquid.
  • the volume expansion of the insulating liquid presses the elastic tympanic membrane 19 to deform away from the insulating liquid, that is, in a direction close to the second cover 15 .
  • the volume of the insulating liquid shrinks.
  • the elastic tympanic membrane 19 deforms in a direction close to the insulating liquid, that is, away from the second cover 15 and presses the insulating liquid, thereby compensating for thermal expansion and contraction of the insulating liquid by means of elastic deformation, thereby ensuring the interior of the casing 1
  • They are all filled with insulating liquid, and the pressure from the insulating liquid is everywhere in the cabinet 1 and the electronic components are substantially constant, and the tank 1 or the casing 1 is not caused by the excessive pressure from the insulating liquid. The electronic component is crushed.
  • the elastic tympanic membrane 19 is pressed by the elastic deformation to ensure the insulating liquid is ensured.
  • the insulating liquid fills the entire tank 1, thereby ensuring that the amount of oil in the tank 1 meets the requirements.
  • the compensating device may also be a piston (not shown) embedded in the flange 18 as shown in FIG. 2, and the piston can move in a sliding manner away from or close to the insulating liquid in the movable space of the compensating device.
  • an anti-dropout structure for blocking the piston from coming out of the flange 18 may be disposed between the piston and the inner wall of the flange 18.
  • the anti-outlet structure may be a protruding edge fixed on the inner wall of the flange 18 away from the insulating liquid, and the protruding edge may be a unitary structure with the inner wall of the box.
  • the casing 1 is further provided with air guiding holes 114 respectively communicating with the outside air (the outside of the casing 1) and the movable space of the compensation device.
  • the air guiding hole 114 can press the air in the movable space of the compensating device when the elastic tympanic membrane 19 is deformed toward the second casing cover 15, and the air in the movable space of the compensating device is discharged from the air guiding hole 114, and the elastic tympanic membrane 19 faces away from the air.
  • the air outside the case 1 is caused to flow into the movable space of the compensating device, thereby ensuring that the elastic tympanic membrane 19 is more likely to be deformed in the movable space of the compensating device.
  • the size of the diameter of the air guiding hole 114 can be arbitrarily set as needed.
  • the arrangement of the active space of the compensating device increases the space in which the elastic tympanic membrane 19 is elastically deformed.
  • other elastic structures or elastic members may be provided in the casing 1 instead of the above-mentioned structure, and of course, a matching movement and protection design is required.
  • a pneumatic bladder that communicates with the air guiding hole 114 and has elasticity is fixed in the casing 1.
  • the connection between the inflatable bladder and the air guiding hole 114 is a liquid-tight connection to prevent the insulating liquid from infiltrating from the connection between the inflatable bladder and the air guiding hole 114. Out of the box 1.
  • the inflatable bladder communicates with the atmosphere through the air guiding hole 114.
  • the principle of compensating the thermal expansion and contraction of the insulating liquid by the elastic deformation is the same as that of the elastic tympanic membrane 19, but the external vacuum filling method is used to fill the tank 1 If the airbag has no protective measures, it is necessary to ensure that the airbag is filled with a proper amount of air to ensure that the airbag can always exert a certain elastic pressure on the insulating liquid; or at the same time, the airbag is evacuated to prevent the airbag from bursting. In addition, there are also sealing problems in the balloon mode.
  • a side of the elastic tympanic membrane 19 away from the inner wall of the casing 1 is provided with a pressure plate 20, and the edge of the pressure plate 20 presses the edge of the elastic tympanic membrane 19 against the convex edge 18, and the edge and convexity of the pressure plate 20 are convex.
  • the fasteners 201 are fixedly connected together, and a central portion of the pressure plate 20 is provided with a plurality of (two or more) through holes 202 as shown in FIG. 5 through which the insulating liquid can freely pass.
  • the side of the elastic tympanic membrane 19 adjacent to the convex rim 18 or the side of the elastic tympanic membrane 19 adjacent to the pressure plate 20 is fixed with at least one convex portion 191 which is convex outward, and the convex edge 18 or
  • the pressure plate 20 is provided with a recess having an inner concave shape, and the convex portion 191 is embedded in the recess.
  • the matching structure of the boss portion 191 and the recess makes the sealing more reliable.
  • the raised portion 191 is preferably an interference fit with the recess.
  • the convex portion 191 is annular, and its axial line coincides with the axial line of the convex edge 18.
  • the seal between the entire flange 18 and the elastic tympanic membrane 19 is relatively reliable.
  • the function of the pressure plate 20 is to securely fix the elastic tympanic membrane 19, and to prevent the elastic tympanic membrane 19 from being excessively broken due to the deformation of the protruding projection 18, and at the same time, the plurality of through holes 202 on the pressure plate 20 can ensure the contact of the insulating liquid with elasticity.
  • the tympanic membrane 19 functions as an elastic tympanic membrane 19.
  • the design of the pressure plate 20 is such that the X-ray generator is suitable for use in Two types of oil filling methods for external and internal vacuum equipment. Of course, the pressure plate 20 can also be replaced by a screen or other fixed structure.
  • the central portion of the side of the elastic tympanic membrane 19 adjacent to the pressure plate 20 as shown in Figs. 5 and 8 has a corrugated shape.
  • the pleated elastic tympanic membrane 19 is more elastic. Since the rim portion of the elastic tympanic membrane 19 is relatively flat, the corrugated portion of the elastic tympanic membrane 19 is placed directly in the middle of the rim 18 so that the two can be aligned, and the elastic tympanic membrane 19 installation is also more convenient.
  • the edge of the pressure plate 20 shown in Fig. 5 is fixedly coupled to the flange 18 by fasteners 201.
  • the fastener 201 is a screw or other fastener.
  • the flange 18 and the second cover 15 are of a unitary structure.
  • the flange 18 and the second cover 15 are of a unitary structure, it is easy to manufacture in one time, and the joint strength between the parts is stronger with respect to the structure in which the individual components are assembled.
  • the flange 18 can also be integrated with one of the first cover 14 or the case body portion 13, and the flange 18 can also be combined with the first cover 14, the second cover 15 or the case body portion 13.
  • One is fixedly connected to the split structure.
  • the number of the convex edges 18 in the casing 1 can be set to one or two or more according to the requirement of the thermal expansion and contraction of the insulating liquid.
  • the outer surface of the box body portion 13 further has a plurality of (two or more) reinforcing ribs 22 integrally formed with the box body portion 13, and the reinforcing ribs 22 are provided with screw holes. 21, the reinforcing ribs 22 are symmetrically disposed on the box body portion 13.
  • the reinforcing ribs 22 can reinforce the strength of the box body portion 13, and on the other hand, the screw holes 21 can be detachably and fixedly connected to other external devices or frames.
  • the reinforcing rib 22 may be provided on the first cover 14 or the second cover 15, or only one may be provided.
  • the convex edge 18 has a circular shape.
  • the outer contour of the cross section of the convex edge 18 is circular, and the pressing plate 20 has a disk shape, and the fastener 201
  • the pressure plate 20, the elastic tympanic membrane 19, and the flange 18 are distributed equiangularly along the circumferential direction of the pressure plate 20.
  • the pressing force from the fastener 201 received by the pressure plate 20, the elastic tympanic membrane 19 and the flange 18 is more uniform, and the pressure plate 20, the elastic tympanic membrane 19 and the flange 18, particularly the elastic tympanic membrane 19, are not easily damaged, and at the same time The stability of the fixed connection between the three will be better.
  • the cross section of the flange 18 may also be an ellipse, a triangle, a rectangle (including a rectangle, a square) or a polygon other than a triangle and a rectangle.
  • the pressure plate 20 is Rectangular board.
  • the structure of the flange 18 and the pressing plate 20, the elastic tympanic membrane 19 and the like may also be disposed on the guard 3, for example, may be disposed on one of the cylinder 30, the first end cover 31 or the second end cover 32.
  • the guard 3 can be regarded as substantially
  • a radiation device mounting box is therefore also within the scope of the present invention.
  • the material of the elastic tympanic membrane 19 in this embodiment is nitrile rubber.
  • the elastic tympanic membrane 19 can also be made of other oil-resistant elastic materials such as fluororubber materials.

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Abstract

一种辐射器件安装箱以及X射线发生器。该辐射器件安装箱包括箱体(1)、固设于箱体(1)内壁上且呈圈状的凸沿(18)以及与凸沿(18)之间液密封固定连接或者活动连接的补偿装置,补偿装置位置相反的两侧中的其中一侧与箱体内壁、凸沿(18)之间形成用于容纳绝缘液体的液体容纳腔;与补偿装置位置相反的两侧中的其中另一侧相对的箱体(1)的内壁与凸沿(18)的内壁之间形成补偿装置活动空间。其解决了箱体、箱体内的电子元件易因为承受来自绝缘液体的压力而损坏的技术问题。

Description

辐射器件安装箱以及 X射线发生器 本申请要求了 2012年 1月 6 日提交的、 申请号为 201210003659. 3、 发明名称为 "辐 射器件安装箱以及 X射线发生器"的中国专利申请的优先权,其全部内容通过引用结合在 本申请中。 技术领域
本发明属于 X射线发生器技术领域, 具体涉及一种辐射器件安装箱以及设置该辐 射器件安装箱的 X射线发生器。 背景技术
应用 X射线成像技术的安检设备的核心是 X射线源和图像采集处理系统, 安检设 备的成像质量和检测效果在很大程度上要取决于 X射线源的性能, 所以 X射线源的质 量至关重要, 目前, 应用 X射线成像技术的安检设备的 X射线源主要是采用 X射线发 生器。
现有的 X射线发生器包括 X射线管组件、 高频高压发生器、灯丝供电模块、 冷却系统 以及箱体, 其中:
X射线管组件包括 X射线管以及与 X射线管的阳极、阴极护线套固定连接的准直器(或 称前准直器)。 X射线管组件位于箱体内, 箱体为板材通过焊接工艺以及螺钉拼接而成。 准 直器与箱体为固定连接在一起的两个单独部件, 准直器上开设有出束孔, 箱体上开设有出 束口。 通常箱体内壁除出束口外的部分固设有 X射线防护层, 用以屏蔽非主束方向的 X射 线。 高频高压发生器与 X射线管的阴极以及阳极电连接, 高频高压发生器用于为 X射线管 的阳极以及其阴极提供直流电压。 灯丝供电模块与 X射线管的阴极电连接, 灯丝供电模块 用于为 X射线管的阴极提供高频脉冲电压。 当灯丝供电模块为 X射线管的阴极提供高频脉 冲电压时, X射线管的阴极在高压电场作用下便会发射出电子流轰击 X射线管的阳极, 从 而激发出 X射线, X射线可以依次穿过出束孔以及出束口向箱体外发射。 冷却系统用于散 发 X射线管上积蓄的热量, 避免 X射线管烧坏。 箱体与准直器构成一个封闭空间, 该封闭 空间内充满冷却液体, 是冷却系统的重要组成部分。 现有技术至少存在以下问题:
由于箱体内部的 X射线管工作过程中会产生大量的热, 导致绝缘液体升温膨胀 (简称 热胀), 升温膨胀的绝缘液体会对箱体内的电子元件施加较大的压力, 并挤压箱体内壁朝外 发生变形, X射线管工作完成后, 绝缘液体又会冷却收缩 (简称冷缩), 绝缘液体冷却收缩 后, 箱体外部的大气会挤压箱体外壁朝内发生变形, 绝缘液体的体积膨胀或收缩会导致箱 体以及箱体内的电子元件所承受的压力变化较大, 使得箱体以及箱体内的电子元件极易因 为承受来自绝缘液体的压力而损坏。 发明内容
本发明的目的是提出一种辐射器件安装箱以及设置该辐射器件安装箱的 X射线发 生器,解决了现有技术存在箱体以及箱体内的电子元件极易因为承受来自绝缘液体的压力 而损坏的技术问题。
为实现上述目的, 本发明提供了以下技术方案:
该辐射器件安装箱, 包括箱体, 还包括固设于所述箱体内壁上且呈圈状的凸沿以及与 所述凸沿之间液密封固定连接或液密封活动连接的补偿装置, 其中- 所述补偿装置位置相反的两侧中的其中一侧与所述箱体内壁、 所述凸沿之间形成用于 容纳绝缘液体的液体容纳腔;
与所述补偿装置位置相反的两侧中的其中另一侧相对的所述箱体的内壁与凸沿的内壁 之间形成允许所述补偿装置朝远离或接近所述绝缘液体的方向变形或移动的补偿装置活动 空间。
本发明的该技术方案可以产生如下技术效果:
由于本发明所提供的箱体内壁上固设有呈圈状的凸沿,凸沿上设置有与凸沿之间液密 封固定连接或液密封活动连接的补偿装置, 在填充于箱体内的绝缘液体发生热胀冷缩的过 程中, 补偿装置 (例如优选地弹性鼓膜、 活塞) 可以在补偿装置活动空间内发生变形或移 动。
当绝缘液体发生热胀现象时, 绝缘液体体积膨胀会挤压补偿装置使其朝远离绝缘液体 的方向即接近箱体内壁的方向变形或移动, 发生变形或移动的补偿装置压缩了补偿装置活 动空间的体积, 增大了液体容纳腔的体积, 增大后的液体容纳腔减小了部分受热膨胀的绝 缘液体对箱体以及箱体内的电子器件施加的压力。 当绝缘液体发生冷缩现象时, 绝缘液体体积收缩, 箱体内的压强小于箱体外部的大气 气压, 大气压缩补偿装置, 使补偿装置朝远离接近绝缘液体的方向变形并挤压绝缘液体, 从而保证了箱体内各处均充满绝缘液体, 且箱体内各处以及各电子元件所承受的来自于绝 缘液体的压力基本恒定, 压力不会太高, 故而箱体或箱体内的电子元件不会被绝缘液体压 坏,所以解决了现有技术存在箱体以及箱体内的电子元件极易因为承受来自绝缘液体的压 力而损坏的技术问题。
同时, 采用真空注油的方式往箱体内注油时, 往箱体内注入绝缘液体的过程结束后, 补偿装置会通过弹性变形或移动的方式挤压绝缘液体, 保证绝缘液体充满整个箱体, 进而 保证箱体内的油量符合要求。
本发明的优选技术方案如下- 优选地, 所述补偿装置为与所述凸沿远离所述箱体内壁的端口固定连接且覆盖在所述 凸沿远离所述箱体内壁的端口上的弹性鼓膜, 所述弹性鼓膜能在所述补偿装置活动空间内 朝远离或接近所述绝缘液体的方向变形; 或者, 所述补偿装置为嵌于所述凸沿内的活塞, 所述活塞能在所述补偿装置活动空间内朝远离或接近所述绝缘液体的方向移动, 所述活塞 与所述凸沿内壁之间还设置有用于阻挡活塞从所述凸沿内脱出的防脱出结构。
优选地, 所述凸沿的横截面的外轮廓呈圆形、 椭圆形、 三角形、 矩形或三角形与矩形 以外的多边形其中的一种;
和 /或,所述箱体上还开设有分别与外界空气以及所述补偿装置活动空间相连通的导气 孔;
和 /或, 所述弹性鼓膜的材料为丁晴橡胶或者氟橡胶; 和 /或, 所述弹性鼓膜通过紧固 件固定于所述凸沿上, 或者, 所述弹性鼓膜远离所述箱体内壁的一侧设置有压板, 所述压 板的边沿将所述弹性鼓膜的边沿抵压于所述凸沿上, 且所述压板的边沿与所述凸沿通过紧 固件固定连接在一起, 所述压板的中部区域开设有绝缘液体可自由通过的一个或两个以上 通孔;
和 /或, 所述弹性鼓膜与所述压板接近的一侧的中部区域呈摺皱形;
和 /或, 所述压板呈盘状, 所述紧固件沿所述压板的周向方向等角度分布于所述压板、 所述弹性鼓膜以及所述凸沿上;
和 /或, 所述箱体包括箱本体部、 第一箱盖以及第二箱盖, 其中:
所述第一箱盖以及所述第二箱盖分别固设于所述箱本体部位置相反的两个端口上, 且 所述凸沿固设于所述第二箱盖或所述第一箱盖上;
所述箱本体部为一体式结构, 所述第一箱盖以及所述第二箱盖的材料与所述箱本体部 的材料相同。
优选地, 所述弹性鼓膜与所述凸沿接近的一侧或所述弹性鼓膜与所述压板接近的一侧 固设有呈外凸形的至少一个凸起部, 所述凸沿或所述压板上开设有呈内凹形的凹口, 所述 凸起部嵌入所述凹口内;
和 /或, 所述箱本体部为铝或铝合金材料采用拉伸成形加工或线切割工艺制成; 和 /或, 所述凸沿与所述第二箱盖为一体式结构;
和 /或, 所述箱本体部的外表面还存在与所述箱本体部为一体式结构的至少一条加强 肋, 所述加强肋上开设有螺孔;
和 /或, 所述第一箱盖与所述箱本体部之间和 /或所述第二箱盖与所述箱本体部之间还 设置有密封条, 其中:
所述箱本体部的端面上开设有台阶面或凹槽, 所述密封条嵌于所述台阶面或凹槽内且 延伸出所述箱本体部的端面,所述第一箱盖和 /或所述第二箱盖接近所述箱本体部的表面抵 压于所述密封条延伸出所述箱本体部的端面的部分上; 或者, 所述第一箱盖和 /或所述第二 箱盖的边沿上开设有台阶面或凹槽, 所述密封条嵌于所述台阶面或凹槽内且延伸出所述第 一箱盖和 /或所述第二箱盖的边沿, 所述箱本体部接近所述第一箱盖和 /或所述第二箱盖的 表面抵压于所述密封条延伸出所述第一箱盖和 /或所述第二箱盖的边沿的部分上;
和 /或,所述辐射器件安装箱还包括设置于所述箱体内的准直器以及一层或多层防护装 置, 其中:
所述防护装置为对 X射线具有屏蔽功能的材料制成; 所述准直器与所述防护装置为一 体式结构, 或者, 所述准直器与所述防护装置为单独的两个部件固定连接在一起; 每一层 所述防护装置均开设有射线出口, 且所述射线出口、所述出束孔以及所述出束口三者同轴。
优选地, 所述凸起部呈环形, 且其轴心线与所述凸沿的轴心线相重合;
和 /或, 所述防护装置呈圆柱形或棱柱形, 且所述防护装置包括筒体、 第一端盖以及第 二端盖, 其中: 所述第一端盖以及所述第二端盖分别与所述筒体位置相反的两个端口固定 连接在一起; 所述第一端盖、所述第二端盖或所述筒体其中之一上至少开设有流体通道和 / 或电路通道;
和 /或, 所述箱体内设置有一层所述防护装置, 所述防护装置与所述箱体之间存在液体 流动和零部件安装空间; 或者, 所述箱体内设置有多层所述防护装置, 多层所述防护装置 中内层的所述防护装置位于外层的所述防护装置之内, 内层的所述防护装置与外层的所述 防护装置之间以及最外层的所述防护装置与所述箱体之间存在液体流动和零部件安装空 间。;
和 /或, 所述防护装置为绝缘材料制成;
和 /或, 所述出束口上填充有封堵窗, 所述封堵窗为可透过 X射线的材料制成, 且所述 封堵窗用于在所述箱体内与所述箱体外之间实现液气密封。
优选地, 所述防护装置为铅氧化物制成;
和 /或, 所述流体通道和 /或所述电路通道为至少开设于所述第一端盖、 所述第二端盖 或所述筒体其中之一上的呈弯曲状的通孔或斜孔; 或者, 至少所述第一端盖、 所述第二端 盖或所述筒体其中之一是由互相叠合的外层板以及内层板所构成的双层结构, 其中: 所述外层板与所述内层板之间存在液体流动腔, 且所述外层板以及所述内层板上均开 设有与所述液体流动腔相连通的导流孔, 所述流体通道由所述导流孔以及所述液体流动腔 构成, 所述外层板上的导流孔沿其轴向方向的正投影与所述内层板上的导流孔完全错开。
优选地, 所述防护装置为四氧化三铅制成;
和 /或, 所述第一端盖上以及所述第二端盖上均开设有所述流体通道以及所述电路通 道;
和 /或, 所述筒体上嵌有内螺纹管, 所述内螺纹管内开设有内螺纹, 连接螺栓上开设有 外螺纹的部分穿过所述外层板且与所述内螺纹管内的内螺纹相配合并将所述筒体与所述第 一端盖以及所述第二端盖固定连接在一起;
和 /或, 所述内层板上固设有定位凸柱, 所述定位凸柱嵌于所述外层板上的定位沉孔内 且与所述定位沉孔紧配合;
和 /或, 所述筒体的内侧边棱上开设有台阶形的台阶部, 所述台阶部与所述内层板的边 棱相抵接;
和 /或, 所述第二端盖的内层板上开设有至少一个阳极限位孔, 所述阳极上开设有限位 螺孔, 定位螺柱上开设有外螺纹部分与所述限位螺孔相配合, 所述定位螺柱上远离所述限 位螺孔的一端插接于所述阳极限位孔内;
和 /或,所述第一端盖上和 /或所述第二端盖上的所述外层板和 /或所述内层板上沿所述 筒体的周向方向等角度分布有多个所述导流孔, 且每个所述导流孔至所述筒体的轴心线之 间的距离相同;
和 /或,所述第一端盖内的所述外层板上的走线孔包括与所述筒体的轴向方向相重合或 相平行的纵向孔以及与所述纵向孔相连通且轴向方向与所述纵向孔的轴向方向相垂直的横 向孔。
该 X射线发生器, 包括 X射线管、 高频高压发生器、 灯丝供电模块以及油冷循环系统, 其中- 所述 X射线管安装于所述防护装置内, 且所述 X射线管发射出的 X射线依次穿过所述 射线出口、 所述出束孔以及所述出束口并照射出所述辐射器件安装箱的箱体;
所述高频高压发生器与所述 X射线管的阴极以及阳极电连接;
所述灯丝供电模块与所述 X射线管的阴极电连接;
所述油冷循环系统包括液体填充箱、 填充于液体填充箱内的绝缘液体以及用于降低所 述绝缘液体的温度的冷却装置, 所述冷却装置包括油泵、 散热器以及冷却风扇, 其中: 所述液体填充箱由上述本发明任一技术方案所提供的辐射器件安装箱构成; 所述散热器位于所述液体填充箱之外, 且所述散热器的进液口与所述液体填充箱的出 液口相连通, 所述散热器的出液口与所述液体填充箱的进液口相连通;
所述油泵为所述液体填充箱内的绝缘液体与所述散热器内的绝缘液体之间的循环流动 提供动力;
所述冷却风扇通过加速所述散热器周围空气流动的方式释放所述散热器上的热量。 优选地, 所述防护装置上还开设有电路通道, 所述高频高压发生器由经过所述电路通 道的导线或接口与所述 X射线管的阴极以及阳极电连接, 所述灯丝供电模块由经过所述电 路通道的导线或接口与所述 X射线管的阴极电连接;
组成所述高频高压发生器的模块中至少部分模块位于防护装置与箱体之间, 且箱体外 部电源或组成所述高频高压发生器的模块中的其余部分模块位于所述箱体之外;
所述箱体上开设有出线通道, 组成所述高频高压发生器的模块中位于所述箱体内的部 分模块与位于所述箱体之外的部分模块之间或者所述高频高压发生器与所述箱体外部电源 之间由经过所述出线通道的导线或接口电连接;
所述防护装置包括筒体、 第一端盖以及第二端盖, 所述第一端盖以及所述第二端盖分 别与所述筒体的两个端口固定连接在一起;
所述第一端盖、 所述第二端盖或所述筒体至少其中之一上开设有流体通道以及所述电 路通道。
优选地, 所述第一端盖以及所述第二端盖上均为由互相叠合的外层板以及内层板所构 成的双层结构, 且所述第一端盖以及所述第二端盖上均开设有所述电路通道, 其中:
开设于所述第一端盖上的所述电路通道包括开设于所述第一端盖上的内层板上的阴极 定位孔以及开设于所述第二端盖上的外层板上的走线孔, 所述 X射线管内阴极外的护线套 嵌于所述阴极定位孔内, 所述走线孔包括与所述 X射线管的轴向方向相重合或相平行的纵 向孔以及与所述纵向孔相连通且轴向方向与所述纵向孔的轴向方向相垂直的横向孔, 所述
X射线管的阴极由两条导线从所述护线套内引出所述走线孔;
开设于所述第二端盖上的所述电路通道包括开设于所述第二端盖的所述内层板上以及 所述外层板上的阳极定位孔, 导电螺柱依次穿过开设于所述第二端盖的所述外层板上以及 所述内层板上的阳极定位孔, 且所述导电螺柱上开设外螺纹部分与开设于所述阳极上的阳 极螺孔相配合, 所述导电螺柱上远离所述阳极的部分上开设有定位螺孔, 导电螺钉上开设 外螺纹部分与所述定位螺孔相配合, 且导电螺钉的头部与所述导电螺柱之间夹持有分别与 所述高频高压发生器的阳极电连接的导线;
和 /或, 所述第一端盖以及所述第二端盖上均开设有流体通道, 所述第一端盖以及所述 第二端盖均为由互相叠合的外层板以及内层板所构成的双层结构, 所述外层板与所述内层 板之间存在液体流动腔, 且所述外层板以及所述内层板上均开设有与所述液体流动腔相连 通的导流孔, 所述流体通道由所述导流孔以及所述液体流动腔构成;
所述阳极呈罩子状且罩设于所述 X射线管的玻璃罩上远离阴极的一端, 所述阳极与 X 射线管的玻璃罩的周向外表面之间存在液体流动空间, 所述阳极上开设有分别与液体流动 空间以及所述第二端盖上的所述内层板上的所述导流孔相连通的液体流通孔。
附图说明
此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中:
图 1为本发明实施例所提供的 X射线发生器内各电子元件之间连接关系的示意图; 图 2 为本发明实施例所提供的辐射器件安装箱的立体结构的局部部件的透视示意 图;
图 3为本发明实施例所提供的 X射线发生器的局部剖视立面示意图; 图 4为图 3中设置密封条的部分的放大示意图;
图 5为图 3沿 A-A线的剖视示意图;
图 6为图 5中第二端盖的内层板的剖视示意图;
图 7为图 6所示第二端盖的内层板的俯视示意图;
图 8为图 5所示凸沿、 弹性鼓膜以及第二箱盖连接处的剖视放大示意图; 图 9为图 3沿 B-B线的剖视示意图;
图 10为本发明实施例所提供的辐射器件安装箱的立面示意图;
图 11为图 9所示辐射器件安装箱的俯视示意图;
图 12 为本发明实施例所提供的辐射器件安装箱内的 X射线管阳极部分的透视示意 图 13为图 12所示 X射线管阳极部分的仰视示意图。 具体实施方式
下面通过附图和实施例, 对本发明的技术方案做进一步的详细描述。
本发明实施例提供了一种能有效避免 X射线管发射的 X射线从箱体内泄露至箱体 周围, 重量轻、 占用空间小, 且补偿装置 (例如弹性鼓膜) 安装方便、 补偿装置耗费材 料也比较少的辐射器件安装箱以及设置该辐射器件安装箱的 X射线发生器。
如图 1、 图 2和图 3所示, 本发明实施例所提供的辐射器件安装箱, 包括箱体 1、 如图 2所示的准直器 2以及位于箱体 1内的一层防护装置 3, 其中:
防护装置 3为对 X射线具有屏蔽功能的材料制成, 防护装置 3与箱体 1之间存在液体 流动和零部件安装空间, 且准直器 2与防护装置 3为一体式结构, 准直器 2与箱体 1为单 独的两个部件可拆卸固定连接在一起。 防护装置 3开设有如图 5所示射线出口 36、 准直器 2上开设有出束孔 (图 5中与射线出口 36重合), 箱体 1上开设有出束口 11, 且射线出口 36、 出束孔以及出束口 11三者同轴。
由于本发明实施例所提供的箱体 1 内设置有一层防护装置 3, 当然也可以设置多层 防护装置 3, 防护装置 3为对 X射线具有屏蔽功能的材料 (例如铅氧化物) 制成, 防护装 置 3位于箱体 1内, 当如图 5所示 X射线管 4位于防护装置 3内时, X射线管 4发射的 X 射线依次经过同轴的如图 5所示射线出口 36、 出束孔以及出束口 11发射出箱体 1。
本实施例中射线出口 36、出束孔以及出束口 11三者同轴可以理解为三者全部同轴即三 者之间沿各自的轴向方向的正投影全部重合, 也可以理解为三者部分同轴即三者之间沿各 自的轴向方向的正投影部分重合, 无论三者全部同轴, 还是部分同轴, 只要能使得 X射线 依次通过射线出口 36、 出束孔以及出束口 11最终射出箱体 1即可。
本实施例中如图 2所示防护装置 3与箱体 1之间存在液体流动和零部件安装空间,空 间的尺寸可以根据需要适当设置。 液体流动和零部件安装空间的存在一方面可以安装电子 元件、 填充用于增强电子元件之间绝缘特性以及散热性能的绝缘液体, 另一方面防护装置 3 在不影响散热以及防护效果的前提下可以制作小一些, 从而节省制作材料和降低箱体的 体积和重量。
当在箱体 1内的防护装置 3中安装如图 5所示的 X射线管 4时, 防护装置 3的厚度以 及防护装置 3的层数 (设置一层时层数为一) 可以根据 X射线管 4发射出的 X射线的强度 来决定。
当箱体 1内设置有多层防护装置 3时, 每一层防护装置 3可以均为对 X射线具有屏蔽 功能的材料制成, 也可以多层中的部分层的防护装置 3为对 X射线具有屏蔽功能的材料制 成。 每一层防护装置 3均位于箱体 1内, 内层的防护装置 3位于外层的防护装置 3之内, 箱体 1与最外层的防护装置 3之间存在液体流动和零部件安装空间, X射线管 4安装于最 内层的防护装置 3内。
另外, 本发明实施例中准直器 2与箱体 1也可以为一体式结构, 此时, 准直器 2与防 护装置 3为单独的两个部件可拆卸固定连接 (例如使用螺钉、 螺栓固定连接)。 当然, 在制 作精度较高的情况下, 准直器 2、 箱体 1 以及防护装置 3也不排除三者或者三者的主体部 分为一体式结构的可能性。
如图 2、 图 5和图 9所示, 本实施例中防护装置 3呈圆柱形, 其包括筒体 30、 第一端 盖 31以及第二端盖 32, 第一端盖 31以及第二端盖 32分别与筒体 30的两个端口固定连接 在一起, 第一端盖 31以及第二端盖 32上均开设有如图 5所示流体通道 312以及电路通道 311。
上述结构简单, 不仅便于防护装置 3装配成型, 便于防护装置 3各部件的加工制造, 而且也便于绝缘液体顺畅流动以及导线、 接口的搭建, 由于有利于绝缘液体的顺畅流动, 所以当 X射线管 4安装于防护装置 3内时, 还有利于散发安装于防护装置 3内的 X射线管 4的热量, 进而提高 X射线管 4冷却的效率。 防护装置 3除了呈圆柱形之外, 还可以为棱 柱形 (包括长方体、 正方体)、 圆台形等其他形状。 本发明实施例中如图 5所示电路通道 311、 流体通道 312其中之一或之二也可以仅开 设于筒体 30上。 当然, 电路通道 311以及流体通道 312也可以分别均开设于筒体 30上以 及第一端盖 31或者第二端盖 32上。
如图 5所示, 本实施例中第一端盖 31 以及第二端盖 32均是由互相叠合的外层板 331 以及内层板 332所构成的双层结构, 其中:
外层板 331与内层板 332之间存在液体流动腔 333, 且外层板 331上开设有与液体流 动腔 333相连通的导流孔 334、内层板 332上开设有与液体流动腔 333相连通的导流孔 335, 流体通道 312由导流孔 334、 导流孔 335以及液体流动腔 333构成, 外层板 331上的导流 孔 334沿其轴向方向的正投影与内层板 332上的导流孔 335完全错开。
本实施例中开设于第一端盖 31上的电路通道 311包括开设于第一端盖 31的内层板 332 上的阴极定位孔 313以及开设于第二端盖 32上的外层板 331上的走线孔 340, 走线孔 340 为弯曲状的通孔, 走线孔 340优选为包括与防护装置 3的轴向方向相重合或相平行的纵向 孔 342以及与纵向孔 342相连通且轴向方向与纵向孔 342的轴向方向相垂直的横向孔 341。
当箱体 1内填充有绝缘液体时, 上述结构中的第一端盖 31 以及第二端盖 32既可以保 证绝缘液体能经过第二端盖 32上的流体通道 312流入筒体 30之内, 又能保证绝缘液体可 以经过第一端盖 31流出防护装置 3之外, 更为重要的是: 当 X射线管 4安装于防护装置 3 内时, 外层板 331上的导流孔 334沿其轴向方向的正投影与内层板 332上的导流孔 335完 全错开, 流体通道 312形成了迷宫式结构, 所以 X射线管 4发射的 X射线即使穿过内层板 332上的导流孔 335也不会穿过外层板 331上的导流孔 334, 所以也不会穿出防护装置 3, 与之同理, 上述结构中的电路通道 311也形成了迷宫式结构, 电路通道 311在不阻碍接口、 线路搭建的同时, 可以有效的屏蔽 X射线直射通过防护装置 3。
本发明中要使得电路通道 311和 /或流体通道 312为上述迷宫式结构, 第一端盖 31 以 及第二端盖 32也可以不设置为双层结构, 此时, 电路通道 311和 /或流体通道 312可以为 弯曲状 (例如直角折线状) 的通孔或者为斜孔 (例如轴向方向与防护装置 3的轴向方向存 在锐角或钝角夹角的通孔, 优选为角度值比较小的锐角或角度值比较大的钝角)。
当然,外层板 331上的导流孔 334与内层板 332上的导流孔 335其中之一和 /或外层板 331上的走线孔 340与内层板 332上的走线孔 340其中之一也可以为弯曲状 (例如直角折 线状) 的通孔或者为斜孔, 此时第一端盖 31以及第二端盖 32也能形成迷宫式结构的电路 通道 311和 /或流体通道 312。 由于斜孔的两个端口在防护装置 3的径向方向上的正投影互 相完全错开或部分错开, 所以斜孔也可以在实现引出线路或流动绝缘液体的同时, 起到阻 挡部分或全部照射于斜孔的两个的端口中的一个端口的放射性射线从两个的端口中的另一 个端口穿出, 尤其是当防护装置 3、 第一端盖 31 以及第二端盖 32的厚度尺寸与电路通道 311和 /或流体通道 312的端口尺寸的比值比较大时。
如图 5所示,本实施例中第二端盖 32上的如图 6和图 7所示内层板 332上沿如图 5所 示筒体 30的周向方向等角度分布有多个 (两个以上) 导流孔 335, 且每个导流孔 335至筒 体 30的轴心线 (筒体 30的轴心线也是防护装置 3的轴心线) 之间的距离相同。
当然, 第二端盖 32上的上的外层板 331也可以沿筒体 30的周向方向等角度分布有多 个 (两个以上) 导流孔 334。 导流孔 335也可以以其他的排列方式分布于第二端盖 32上。 同时, 第一端盖 31上的导流孔 334也可以按照上述方式分布, 此外, 导流孔 334或导流孔 335也可以仅在第一端盖 31的外层板 331或内层板 332其中之一上按照上述方式分布。
由于本实施例中第一端盖 31内的外层板 331上的走线孔 340包括与筒体 30的轴向方 向 (筒体 30的轴向方向也是防护装置 3的轴向方向) 相重合的纵向孔 342以及与纵向孔 342相连通且轴向方向与纵向孔 342的轴向方向相垂直的横向孔 341。
横向孔 341 以及纵向孔 342形成了直角折线状的走线孔 340, 这种结构可以保证与 X 射线管 4阴极电连接的导线(该导线也可以视为阴极的一部分)从走线孔 340引出的同时, X射线管 4发射出的 X射线不会从走线孔 340穿出。 当然, 纵向孔 342也可以与筒体 30的 轴向方向相平行, 走线孔 340也可以为斜孔或其他弯曲状 (例如锐角或钝角折线状) 的通 孔。
X射线管 4用于保护阴极 41的护线套 315嵌于第一端盖 31内的内层板 332的阴极定位 孔 313内, 与阴极 41 电连接的导线护线套 (通常为铜材料制成) 315引出防护装置 3。 X 射线管 4内阳极 (或称阳极底座) 42采用导电材料制成的紧固件 (本实施例中紧固件使用 如图 5所示的导电螺柱 317以及导电螺钉 318 ) 固定于第二端盖 32上, X射线管 4的阳极 42通过紧固件以及与紧固件电连接的导线与防护装置 3外的倍压整流模块 54的阳极 (倍 压整流模块 54的阳极同时也是高频高压发生器 5的阳极) 电连接。导电材料制成的紧固件 本身也起到了导电的功能。
X射线管 4的阳极 42呈罩子状且罩设于 X射线管 4的玻璃罩上远离阴极 41的一端, 阳极 42与 X射线管 4的玻璃罩的周向外表面之间存在液体流动空间 422, 阳极 42上开设 有与液体流动空间 422相连通的液体流通孔 423。 该结构中位于防护装置 3外的绝缘液体 通过如图 12或图 13所示的流体流通孔 423流入或流出防护装置 3。 本实施例中液体流通 孔 423的轴向方向优选为与 X射线管 4的轴向方向相平行。
为了更有效的定位阳极 42, 在阳极 42的周向外表面还可以开设一个、 两个或多个周 向螺孔 420, 穿过筒体 30且嵌入周向螺孔 420的螺钉在阳极 42的周向方向上将阳极 42固 定在防护装置 3内。
上述结构具有安装简单、 方便, 且连接可靠的优点。
分布于第二端盖 32上的内层板 332上的导流孔 335的数目与 X射线管 4内阳极 42上 的液体流通孔 420两者的数目优选为一致, 当然, 两者的数目也可以不一致, 上述结构有 利于温度较低的绝缘液体首先流动至 X射线管 4内阳极 42附近,进而避免了嵌于 X射线管 4的阳极 42上的靶点的温度太高而烧坏。
本实施例中防护装置 3为兼具防护与绝缘性能的材料制成。 由于当 X射线管 4安装于 防护装置 3内时, 上述结构既可以有效避免 X射线泄露, 又可以避免加载有高电压的 X射 线管 4以及为 X射线管 4提供高电压的电子元件或模块 (例如如图 1所示高频高压发生器 5内的高压变压器 53、 倍压整流模块 54 ) 在箱体 1内发生打火或短路故障。
本实施例中筒体 30上嵌有内螺纹管 301,内螺纹管 301内开设有内螺纹,连接螺栓 302 上开设有外螺纹的部分穿过外层板 331且与内螺纹管 301内的内螺纹相配合并将筒体 30与 第一端盖 31以及第二端盖 32固定连接在一起。
连接螺栓 302与内螺纹管 301构成的螺纹连接结构将筒体 30与第一端盖 31以及第二 端盖 32固定连接在一起。
由于筒体 30为铅氧化物制成, 非常脆, 难以使用切削工艺制出内螺纹, 内嵌的内螺纹 管 301 优选为耐高温的金属材料制成, 其可以在筒体 30未完全成形之前嵌入于制作筒体 30内。
本实施例中如图 6所示内层板 332上固设有定位凸柱 321, 定位凸柱 321嵌于外层板 331上的定位沉孔(图中未标记出来) 内且与定位沉孔紧配合。 定位凸柱 321与内层板 332 优选为一体式结构。
本实施例中筒体 30的内侧边棱上开设有台阶形的台阶部 304,台阶部 304与内层板 332 的边棱相抵接。 上述结构具有安装容易、 组装方便、 结构紧凑的优点。
如图 5所示, 本实施例中出束口 11上填充有如图 3或如图 10所示封堵窗 12, 封堵窗 12为可透过 X射线的材料制成, 且封堵窗 12具有在箱体 1 内与箱体 1外之间实现液气密 封的功能。
封堵窗 12将出束口 11密封住, 一方面避免外界空气、 粉尘进入箱体 1内, 另一方面, 当在防护装置 3内和 /或防护装置 3以及箱体 1之间的液体流动和零部件安装空间内填充有 绝缘液体时, 封堵窗 12还可以避免绝缘液体从出束口 11流出箱体 1之外。 当防护装置 2 内填充有绝缘液体时, X射线管 4发射的 X射线会穿透绝缘液体并从封堵窗 12照射于箱体 1之外, 由于 X射线管 4发射的 X射线强度高, 所以绝缘液体对 X射线所带来的损耗非常 小, 通常均可忽略不计。
当然, 本实施例中也不排除不设置封堵窗 12的可能性, 当如图 5所示 X射线管 4的玻 璃罩与防护装置 3上射线出口 36位于防护装置 3内的端口紧密抵靠, 且射线出口 36、 出 束孔(与射线出口 36重合)、出束口 11以及 X射线管 4的玻璃罩构成绝缘液体密封腔室时, 绝缘液体也无法从 X射线管 4与防护装置 3之间的缝隙渗透至射线出口 36、 出束孔以及出 束口 11。
本实施例中绝缘材料优选为四氧化三铅。 四氧化三铅制成的板材或容器对 X射线具有 较强的屏蔽功能。 当然, 绝缘材料也可以使用四氧化三铅之外的其他铅氧化物, 铅氧化物 与铅或铅锑合金等对 X射线具有较强的屏蔽功能的材料相比, 具有密度低、 强度高、 电气 绝缘性能与辐射防护性能优良的优点。
如图 5和图 10所示, 本实施例中箱体 1包括箱本体部 13、 第一箱盖 14以及第二箱盖 15, 其中: 第一箱盖 14以及第二箱盖 15分别固设于箱本体部 13的两个端口上, 箱本体部 13为一体式结构, 第一箱盖 14以及第二箱盖 15的材料与箱本体部 13的材料相同。
一体式结构的箱本体部 13不仅结构简单、各部分之间连接强度好、便于采用一次成型 工艺制造, 而且相对于由板材拼接 (通常采用螺钉连接或焊接) 而成的箱本体部 13而言, 一体式结构的箱本体部 13密封效果会更好。 对绝缘液体、 X射线的防泄露性能更为优良, 同时, 在 X射线发生器使用过程中尤其是往箱体 1 内采用真空注油的方式 (使用真空注油 的方法由如图 3所示注油孔 112注好绝缘液体后, 再使用密封墊以及密封螺栓 113将注油 孔 112密封。) 注入绝缘液体时, 箱体 1外部的空气不会从箱本体部 13上渗透至箱体 1内 部, 进而避免了空气对绝缘液体的散热以及绝缘效果的影响。 当然, 箱本体部 13也可以为 单独的分体结构通过焊接或螺纹连接拼接而成, 此时, 第一箱盖 14、 第二箱盖 15 以及箱 本体部 13的材料也可以各不相同。
如图 3、 图 4和图 5所示, 本实施例中第一箱盖 14与箱本体部 13之间以及如图 5所 示第二箱盖 15与箱本体部 13之间还设置有如图 4所示密封条 345, 密封条 345为橡胶材 料制成, 其中:
箱本体部 13的端面上开设有如图 4所示台阶面 346或凹槽, 密封条 345嵌于台阶面 346或凹槽内且延伸出箱本体部 13的端面,第一箱盖 14以及第二箱盖 15接近箱本体部 13 的表面抵压于密封条 345上。
这种结构中介于第一箱盖 14与箱本体部 13之间以及介于第二箱盖 15与箱本体部 13 之间密封条 345受到了挤压, 所以密封条 345与第一箱盖 14以及箱本体部 13抵接的更为 紧密, 可以起到更好的密封效果。
上述结构中密封条 345也可以为橡胶材料之外的其他具有弹性的材料制成, 其位置也 可以仅设置于第一箱盖 14与箱本体部 13之间或者仅设置于第二箱盖 15与箱本体部 13之 间。
当然, 如图 4所示台阶面 346或凹槽也可以开设于第一箱盖 14和 /或如图 5所示第二 箱盖 15的边沿上, 此时, 密封条 345嵌于台阶面 346或凹槽内且延伸出第一箱盖 14和 / 或第二箱盖 15的边沿,箱本体部 13接近第一箱盖 14和 /或第二箱盖 15的表面抵压于密封 条 345上。
本实施例中如图 5所示箱本体部 13为强度高、重量轻的铝或铝合金材料采用拉伸成形 工艺制成。 拉伸成形工艺制造效率比较高, 同时还可以避免焊接结构易发生变形、 瑕疵而 引起泄露。 当然, 箱体也可以使用线切割等工艺或其他材料。
总体而言, 本实施例中拉伸成形的铝合金材料箱体 1与防护装置 3在体积和重量上优 于现有采用常规技术的同类产品, 所以本实施例所提供的辐射器件安装箱还具有重量轻, 便于加工、 组装、 搬运的优点。
如图 8和图 11所示, 本发明实施例所提供的油冷循环系统包括液体填充箱、填充于液 体填充箱内的绝缘液体以及用于降低绝缘液体的温度的冷却装置 72, 冷却装置 72包括油 泵 721、 散热器 722以及冷却风扇 723, 其中:
液体填充箱由上述本发明实施例所提供的辐射器件安装箱构成。 散热器 722位于液体 填充箱之外, 且散热器 722的进液口与液体填充箱的出液口相连通, 散热器 722的出液口 与液体填充箱的进液口相连通。 油泵 721为液体填充箱内的绝缘液体与散热器 722内的绝 缘液体之间的循环流动提供动力。 冷却风扇 723通过加速散热器 722周围空气流动的方式 释放散热器 722上的热量。 本实施例中绝缘液体为 25 #变压器绝缘油, 绝缘液体不仅可以作为绝缘介质避免各种 加载有高电压的元件或模块发生击穿或短路故障, 而且还可以起到散热介质的作用。 当然, 绝缘液体也可以使用 25 #变压器绝缘油之外的其他绝缘油。
X射线管 4只能把 1%左右的能量转化为 X射线, 其余的约 99%的能量全部转化为热能 并作用于 X射线管 4的阳极 42, 因此, 为了防止 X射线管 4的阳极 42过热造成靶点融化 和损坏, 需要通过外接油泵 721、 散热器 722进行循环油冷散热, 最后再把冷却后的绝缘 液体回流到 X射线管 4的阳极 42, 达到散热效果。
本实施例中如图 1所示箱体外部电源 8为 220V交流市电, 当然, 箱体外部电源 8也可 以为工厂常用的电源或蓄电池。
通过如图 5所示流体通道 312在防护装置 3内与箱体 1与防护装置 3之间自由流动的 绝缘液体在如图 3或图 9所示油泵 721提供的动力的带动下会将防护装置 3内以及箱体 1 内如图 5所示 X射线管 4产生的热量(热量主要是 X射线管 4阳极 42产生)转移至散热器 722 内, 进而通过流动空气释放掉, 然后, 再将经过散热器 722冷却后的绝缘液体重新输 入防护装置 3内以及箱体 1与防护装置 3之间, 再次吸收 X射线管 4产生的热量。
冷却系统设计时, 不仅需要综合考虑箱体 1、 防护装置 3、 散热器 722以及绝缘液体的 散热效率, 还需要考虑如图 3或图 9所示油泵 721的功耗, 从而设计出散热性能满足 X射 线发生器总体散热要求的冷却系统。
当然, 油泵 721也可以仅为防护装置 3或箱体 1其中之一内的绝缘液体与散热器 722 内的绝缘液体之间的循环流动提供动力。
如图 3和图 9所示, 本实施例中油泵 721固设于箱体 1的内壁 (优选为采用螺钉或螺 栓固设于第一箱盖 14 ) 上, 且位于箱体 1与防护装置 3之间。 箱体 1与防护装置 3之间的 安装空间比较充裕, 适宜安装油泵 721。
本实施例中如图 3所示油泵 721的吸液口朝向防护装置 3的出液口, 防护装置 3的进 液口与入液管 35相连通, 箱体 1的进液口 111与进液管 17相连通, 进液管 17的出液端口 170朝向入液管 35的入液端口 350。
这种结构中油泵 721会从防护装置 3的出液口吸走巳经带有较多热量的绝缘液体, 并 将其从箱体 1如图 3所示的出液口 110输出至散热器 722。 设置管道、 入液管 35以及进液 管 17可以使得绝缘液体的流动更为通畅。
当然, 上述结构中, 油泵 721的吸液口与防护装置 3的出液口之间和 /或进液管 17的 出液端口 170与入液管 35的入液端口 350之间也可以通过管道相连通。油泵 721也可以固 设于散热器 722内, 也可以一部分固设于液体填充箱与防护装置 3之间, 一部分固设于散 热器 722内。 油泵 721的数目为多个 (两个以上) 时, 也可以其中一个或几个位于散热器 722内, 其中的另外一个或几个位于液体填充箱与防护装置 3之间。
如图 3或图 9所示, 本实施例中油泵 721为直流无刷潜水泵, 这种泵具有密封好、 噪 音小、 功耗低、 性能稳定且寿命长的优点。
当然, 如图 9所示的冷却风扇 723也可以使用其他的制冷装置 (例如冰箱、 冰柜所使 用的制冷装置) 通过对散热器 722直接制冷的方式来取代使用气流散热的方式。 如图 9和 图 10所示, 本实施例中冷却装置 72还包括罩设于散热器 722以及冷却风扇 723之外的呈 框架状的支架 724, 支架 724与箱体 1单独的两个部件固定连接在一起。
支架 724使用密度较小的铝合金材料管体焊接而成, 其结构所耗费的材料少, 不仅对 散热器 722以及冷却风扇 723具有保护作用, 还可以作为提手以便于用户移动装置。
当然, 支架 724也可以使用其他材料制成, 也可以为实心的杆件焊接而成或者为螺栓 或螺钉与杆件上的螺孔构成的连接结构连接而成。 支架 724也可以为具有良好通风效果的 其他防护罩所取代。
如图 1和图 2所示, 本发明实施例所提供的 X射线发生器包括 X射线管 4、 高频高压 发生器 5、 灯丝供电模块 6以及上述本发明任一实施例所提供的油冷循环系统, X射线管 4 安装于辐射器件安装箱内的防护装置 3之内, 且 X射线管 4发射出的 X射线依次穿过如图 5所示射线出口 36、 出束孔 (与射线出口 36重合) 以及出束口 11并照射出辐射器件安装 箱的箱体 1。
高频高压发生器 5与 X射线管 4的阴极 41以及阳极 42电连接, 高频高压发生器 5用 于为 X射线管 4的阳极 42以及其阴极 41提供直流电压。 灯丝供电模块 6与 X射线管 4的 阴极 41电连接, 灯丝供电模块 6用于为 X射线管 4的阴极 41提供足以使 X射线管 4的阴 极 41在高压电场作用下发射出可轰击到阳极 42的电子流的高频脉冲电压。
本实施例中防护装置 3上还开设有如图 5所示电路通道 311, 如图 1所示高频高压发 生器 5的阴极由经过电路通道 311的导线与 X射线管 4的阴极 41电连接,高频高压发生器 5的阳极通过与与导电螺钉 318以及导电螺柱 317电连接的导线与 X射线 4的阳极 42电连 接; 灯丝供电模块 6由经过电路通道 311的导线与 X射线管 4的阴极 41电连接。
组成高频高压发生器 5的模块中的部分模块位于箱体 1与防护装置 3之间, 且箱体外 部电源 8以及组成高频高压发生器 5的模块中的其余部分模块位于箱体 1之外, 箱体 1上 开设有如图 3所示出线通道 16, 组成如图 1所示高频高压发生器 5的模块中位于箱体 1内 的模块与位于箱体 1外的其余部分模块之间由经过出线通道 16的接口电连接。
当然, 本发明中组成高频高压发生器 5的模块中的全部模块也就是整个高频高压发生 器 5、 采样信号处理模块 92以及逻辑判断控制模块 93也可以设置于箱体 1与防护装置 3 之间, 此时上述电子器件与其所需的外部供电电路和远程通讯信号发射电路之间由经过出 线通道 16的接口电连接。上述用于电连接的导线也可以使用接口来替代, 接口也可以使用 导线来替代。
另外, 本实施例中组成如图 1所示高频高压发生器 5的模块中的部分模块也可以位于 防护装置 3内, 此时, 组成如图 1所示高频高压发生器 5的模块中位于防护装置 3内的模 块与组成如图 1所示高频高压发生器 5的模块中位于箱体 1与防护装置 3之间或位于箱体 1外的部分模块之间由经过电路通道 311或由经过电路通道 311以及出线通道 16的线缆或 接口电连接。
本实施例中第一端盖 31 以及第二端盖 32上均为由互相叠合的外层板 331 以及内层板 332所构成的双层结构, 且第一端盖 31以及第二端盖 32上均开设有电路通道 311, 其中: 开设于第一端盖 31上的电路通道 311包括开设于第一端盖 31的内层板 332上的阴极 定位孔 313以及开设于第二端盖 32上的外层板 331上的走线孔 340, X射线管 4内阴极 41 外的护线套 314嵌于阴极定位孔 313内, 走线孔 340包括与防护装置 3的轴向方向相重合 或相平行的纵向孔 342以及与纵向孔 342相连通且轴向方向与纵向孔 342的轴向方向相垂 直的横向孔 341, X射线管 4内阴极 41的护线套 315嵌于纵向孔 342内, X射线管 4的阴 极 41为从护线套 315内引出横向孔 341的两条导线;
开设于第二端盖 32上的电路通道 311包括开设于第二端盖 32的内层板 332上以及外 层板 331上的阳极定位孔 316, 导电螺柱 317依次穿过开设于第二端盖 32的外层板 331上 以及内层板 332上的阳极定位孔 316, 且导电螺柱 317上开设外螺纹部分与开设于阳极 42 上的阳极螺孔相配合, 导电螺柱 317上远离阳极 42 的部分上开设有定位螺孔, 导电螺钉 318上开设外螺纹部分与定位螺孔相配合, 且导电螺钉 318的头部与导电螺柱 317之间夹 持有与高频高压发生器 5的阳极电连接的导线。
导电螺钉 318与导电螺柱 317之间还套接有环形的垫片, 与高频高压发生器 5的阳极 电连接的导线夹持于垫片与导电螺钉 318的头部之间。 本实施例中第二端盖 32如图 6所示的内层板 332上开设有至少一个阳极限位孔 320, 如图 12和图 13所示阳极 42上开设有限位螺孔 424, 定位螺柱 421上开设有外螺纹部分与 限位螺孔 424相配合,定位螺柱 421上远离限位螺孔 424的一端插接于阳极限位孔 320内; 定位螺柱 421与阳极限位孔 320的数目一致且均为两个, 当然, 定位螺柱 421与阳极 限位孔 320的数目也可以均为一个或三个以上。
本实施例中第一端盖 31以及第二端盖 32上均开设有流体通道 312, 第一端盖 31以及 第二端盖 32均为由互相叠合的外层板 331以及内层板 332所构成的双层结构, 外层板 331 与内层板 332之间存在液体流动腔 333, 内层板 332上开设有与液体流动腔 333相连通的 导流孔 335, 且外层板 331开设有与液体流动腔 333相连通的导流孔 334, 流体通道 312由 导流孔 334、 导流孔 335以及液体流动腔 333构成。
如图 12所示, 阳极 42呈罩子状且罩设于 X射线管 4的玻璃罩上远离阴极 41的一端, 阳极 42与 X射线管 4的玻璃罩的周向外表面之间存在液体流动空间 422, 阳极 42上开设 有与液体流动空间 422相连通的液体流通孔 423。 本实施例中液体流通孔 423的轴向方向 与 X射线管 4的轴向方向优选为相平行,位于防护装置 3外的绝缘液体通过第二端盖 32上 的流体通道 312、 流体流通孔 423、 液体流动空间 422流入或流出防护装置 3。
为了更有效的定位阳极 42, 在阳极 42的周向外表面还可以开设一个、 两个或多个周 向螺孔 420, 穿过筒体 30且嵌入周向螺孔 420的螺钉在阳极 42的周向方向上将阳极 42固 定在防护装置 3内。
为了使得图 12更为简明, 图 12中未示出图 13内可见的用于定位阳极 42的孔即限位 螺孔 424以及周向螺孔 420。 上述结构具有安装简单、 方便的优点。
横向孔 341 以及纵向孔 342形成了直角折线状的走线孔 340, 这种结构可以保证从走 线孔 340引出导线的同时, X射线管 4发射出的 X射线无法从走线孔 340穿出。 当然, 线 孔 34也可以为斜孔或其他弯曲状 (例如锐角或钝角折线状) 的通孔。
本实施例中如图 5所示防护装置 3的出液口位于第一端盖 31上的流体通道 312上,防 护装置 3的进液口位于第二端盖 32上的流体通道 312上。
由于 X射线管 4所散发出的热量主要源自于其阳极 42, 所以防护装置 3的进液口位于 第二端盖 32上时, 进液口与 X射线管 4的阳极 42更为接近, 温度较低的绝缘液会先与 X 射线管 4的阳极 42接触并带走 X射线管 4的阳极 42上的热量, 避免了 X射线管 4的阳极 靶点因为热量太大而烧坏。靶点位于图 12所示由玻璃罩内从右侧发射出 X射线(中心线所 示) 的位置。
本实施例中组成如图 1所示高频高压发生器 5的模块包括依次电连接的整流调压模块 一 51、 高频逆变器 52、 高压变压器 53 以及倍压整流模块 54, 其中: 整流调压模块一 51 与箱体外部电源 8电连接, 整流调压模块一 51用于从箱体外部电源 8获取维持 X射线管 4 的阴极 41以及阳极 42上加载直流高压所需要的电能。 倍压整流模块 54分别与 X射线管 4 的阴极 41以及阳极 42电连接。
组成高频高压发生器 5的模块中高压变压器 53以及倍压整流模块 54固设于箱体 1与 如图 2所示防护装置 3之间, 如图 2所示的高压变压器 53固设于准直器 2上, 当然, 也可 以固设于 PCB板上、 第一箱盖 14或第二箱盖 15上。 倍压整流模块 54固设于电路板上, 电路板的两端中至少一端(图 3所示为位置高度较高的一端)与固设于第一箱盖 14上 的限位凸片 145或第二箱盖 15上的限位凸片 145 (图 3所示为第一箱盖 14上的限位凸片 145 ) 互相抵接, 且电路板通过紧固件 (优选尼龙材料制成) 固定于限位凸片 145上。
当然,本实施例中固设有倍压整流模块 54的电路板与箱体 1之间的固定连接方式很多, 例如: 电路板的两端中至少一端也可以嵌于第一箱盖 14上或第二箱盖 15上的凹槽内, 且 电路板的中部区域通过紧固件固定于箱本体部 13上。 紧固件用于防止电路板振动或变形, 从而避免倍压整流模块 54因为振动而损坏。
上述对组成如图 1所示高频高压发生器 5的模块的固定及装配方式, 结构紧凑, 能充 分利用箱体 1内的空间。
当然, 倍压整流模块 54也可以固设于防护装置 3的表面。 高压变压器 53也可以固设 于第一箱盖 14或第二箱盖 15其中之一与绝缘液体相接触的一侧上。
本实施例中整流调压模块一 51固设于箱体 1之外, 其包括全桥整流模块以及 BUCK斩 波调压模块。 全桥整流模块将箱体外部电源 8提供的交流电转换为直流电。 BUCK斩波调压 模块用于将固定的直流电压变换成可变的直流电压即 DC/DC变换后, 输入高频逆变器 52。
高频逆变器 52也固设于箱体 1之外, 其采用全桥串并联谐振高频逆变电路, 将低压直 流电逆变为高频低压交流电。
高压变压器 53用于将高频逆变器 52输出的电压升压后输入倍压整流模块 54。
倍压整流模块 54采用多级 (两级以上倍压整流电路, 倍压整流模块 54起到升压、 整 流 (交流变直流) 的作用。
由于高压变压器 53以及倍压整流模块 54上通常均加载有千伏以上的高压, 所以高压 变压器 53以及倍压整流模块 54固设于箱体 1与防护装置 3之间并浸泡在绝缘液体内时, 绝缘液体不仅能防止高压变压器 53以及倍压整流模块 54上的高压击穿, 而且其上产生的 热量还可以由流动的绝缘液体带走。
如图 1和图 3所示, 本实施例中 X射线发生器还包括监控系统, 监控系统包括如图 1 所示信号采样模块 91、 采样信号处理模块 92、 逻辑判断控制模块 93以及为逻辑判断控制 模块 93供电的辅助电源模块 94。
信号采样模块 91位于箱体 1与防护装置 3之间。箱体 1与防护装置 3之间安装空间大, 所以适宜于安装信号采样模块 91。 当然, 信号采样模块 91也可以安装于防护装置 3之内。
信号采样模块 91用于检测 X射线管 4的阴极 41以及阳极 42上的电信号、绝缘液体的 温度以及流入箱体 1 的绝缘液体的流量, 并将检测得到的电信号发送至采样信号处理模块 92。
采样信号处理模块 92分别与信号采样模块 91以及逻辑判断控制模块 93电连接。采样 信号处理模块 92用于对从信号采样模块 91接收的电信号进行滤波等处理, 消除相关干扰 信号, 并将电信号模数转换为数字量 (例如二进制) 形式的检测结果后, 再发送至逻辑判 断控制模块 93。
本实施例中逻辑判断控制模块 93通过如图 1所示串行通信接口 95来实现对外数据交 互, 当然, 也可以通过其他通信接口或导线甚至可以通过发送或接收无线信号的形式来实 现。
逻辑判断控制模块 93可以不将检测结果输出,而是依照预先设定的检测结果与控制指 令对应规则, 根据检测结果自行调用预先存储的控制指令, 并根据控制指令控制高频高压 发生器 5的输出电压和 /或电流、 灯丝供电模块 6的输出电压和 /或电流以及油泵 721的功 耗其中的部分或全部。 这种实现方式自动化程度高。
如图 1所示, 信号采样模块 91包括 kV/mA采样电路 911、 温度传感器 912、 流量传感 器 913, 其中:
kV/mA采样电路 911用于检测 X射线管 4的阴极 41 以及阳极 42所构成的高压回路上 的电压和 /或电流, kV/mA采样电路 911主要包括 kV高压分压器、 mA采样电阻以及闪络互 感器。 kV/mA采样电路 911与如图 2所示倍压整流模块 54集成为一体, 当然, kV/mA采样 电路 911也可以与倍压整流模块 54为单独的两个部分, 仅与倍压整流模块 54电连接。
温度传感器 912用于检测绝缘液体的温度。 流量传感器 913用于检测经过如图 5所示流体通道 312的绝缘液体的流量。
本实施例中温度传感器 912、 流量传感器 913发出的电信号为开关量 (二进制) 形式, 此时无需进行模数转换, 这样减小了采样信号处理模块 92 的工作量。 当然, 温度传感器
912、 流量传感器 913发出的电信号也可以为模拟量形式。
信号采样模块 91采集的故障信号的类型包括流量故障信号、温度故障信号以及闪络故 障信号, 其中:
当流量不在预定值范围内时,则此时反馈至采样信号处理模块 92的用以反映越限的流 量的电信号则视为流量故障信号, 同理, 温度超过预定值时, 则此时反馈至采样信号处理 模块 92的用以反映过温的电信号则视为温度故障信号。 若采集到的电压和 /或电流值出现 异常时, 可以根据异常的电压和 /或电流值判断出是否存在闪络故障, 从而将异常的电压和 /或电流值视为闪络故障信号。
如图 3所示, 流量传感器 913固设于箱体 1的进液管 17上, 从散热器 722进入箱体 1 的绝缘液体均会经过进液管 17, 所以设置在进液管 17上可以准确的检测出进入箱体 1 的 绝缘液体的流量。 当然, 流量传感器 913也可以固设于箱体 1的出液口 110上, 此时, 可 以检测出流出箱体 1的绝缘液体的流量, 由于箱体 1内的绝缘液体的量是恒定的, 所以通 过检测流出箱体 1的全部绝缘液体的流量, 也可以反推出进入箱体 1的绝缘液体的流量。
如图 3所示, 温度传感器 912固设于箱体 1上的出线通道 16附近, 此时, 温度传感器 912更易从出线通道 16引出。
本实施例中如图 1所示灯丝供电模块 6包括与逻辑判断控制模块 93电连接的整流调压 模块二 61、 灯丝逆变器 62以及分别与灯丝逆变器 62和 X射线管 4的阴极 41电连接的灯 丝变压器 63;
灯丝逆变器 62为半桥结构,灯丝变压器 63固设于如图 2所示箱本体部 13的内壁与第 一箱盖 14相接近的位置, 灯丝变压器 63为降压变压器, 其用于将灯丝逆变器 62输出的电 压转换为 X射线管 4的阴极 41需要的高频脉冲电压后输出至 X射线管 4的阴极 41。
经过如图 3所示箱体 1上的出线通道 16的接口为具有在箱体 1内与箱体 1外之间实现 液气密封的功能的航空插头 161, 高压变压器 53与高频逆变器 52之间、 信号采样模块 91 与采样信号处理模块 92之间以及灯丝逆变器 62与灯丝变压器 63之间均通过航空插头 161 电连接。
整流调压模块一 51、 高频逆变器 52以及逻辑判断控制模块 93上加载的电压均较低, 为了节省箱体 1的体积, 同时也为安装、 拆卸、 电连接和 /或参数设置的方便, 本实施例中 整流调压模块一 51、 高频逆变器 52、 逻辑判断控制模块 93、 整流调压模块二 61、 灯丝逆 变器 62以及辅助电源模块 94均固设于箱体 1的外表面上, 当然, 整流调压模块一 51、 高 频逆变器 52、整流调压模块二 61、灯丝逆变器 62以及逻辑判断控制模块 93也可以固设于 箱体 1外的控制盒内, 控制盒既可以固设于箱体 1的外表面上, 也可以单独放置于其他架 体或机箱上, 控制盒内引出的相关电信号可以通过穿透控制盒的导线与如图 3所示航空插 头 161电连接。
如图 3和图 10所示, 航空插头 161具有密封效果好, 而且便于安装、 电信号传输稳定 的优点。 接口也可以为导线与密封圈等密封件的组合体。
当然, 高压变压器 53与高频逆变器 52之间、 信号采样模块 91与采样信号处理模块 92之间以及灯丝逆变器 62与灯丝变压器 63之间也可以部分通过航空插头 161电连接, 部 分通过线缆或其他接口电连接。
本实施例中如图 2所示准直器 2上开设有两个以上螺孔 21,箱体 1上开设有与螺孔 21 同轴的安装孔, 箱体 1 (如图 5所示箱本体部 13 )通过依次穿过安装孔以及螺孔 21的螺钉 与准直器 2固定连接在一起。
螺孔 21与螺钉所构成的连接结构, 装配、 拆卸均比较方便。 安装本实施例所提供的 X 射线发生器时, 首先在第一箱盖 14上集成安装好油泵 721、 灯丝变压器 63、 设置有倍压整 流模块 54的电路板以及航空插头 161,然后将 X射线管 4安装于防护装置 3的第一端盖 31 和第二端盖 32之间, 并完成相关电连接, 整体推送入箱体 1, 再将防护装置 3 (含准直器 2 ) 通过螺钉固定于如图 5所示箱本体部 13上, 进而连接进油管 17和出油口 110, 最后将 第一箱盖 14和第二箱盖 15密封固定于箱本体部 13上。
当然, 螺钉也可以为螺栓或螺柱等其他开设有螺纹的紧固件所取代, 如图 2所示螺孔 21 的数目可以开设一个、 一排或多排 (两排以上), 具体数目可以根据实际需要 (例如安 装现场方便采用的螺钉或螺栓的尺寸大小) 来决定。
如图 5和图 8所示, 本实施例中辐射器件安装箱包括前文所述箱体 1, 还包括固设于 箱体 1内壁上且呈圈状的凸沿 18以及与凸沿 18之间液密封固定连接或液密封活动连接的 补偿装置, 其中:
补偿装置的两侧中的其中一侧与箱体 1内壁、凸沿 18之间形成用于容纳绝缘液体的液 体容纳腔; 与补偿装置的两侧中的其中另一侧相对的箱体 1的内壁与凸沿 18的内壁之间形成允许 补偿装置朝远离或接近绝缘液体的方向变形或移动的补偿装置活动空间。
由于本发明中凸沿 18位于箱体 1内壁上, 补偿装置与凸沿 18之间液密封固定连接或 液密封活动连接, 当箱体 1包括如图 5箱本体部 13、 第一箱盖 14以及第二箱盖 15时, 可 以单独在第二箱盖 15上的凸沿 18上安装好补偿装置之后再组装为完整的箱体, 由此可见, 补偿装置的组装与箱体的组装可以分开进行, 分开进行时, 不仅安装省力、 方便, 而且不 容易出错, 而且由于凸沿 18的高度可以根据需要设计, 所以补偿装置活动空间的深度以及 大小也可以根据需要设计, 凸沿 18不仅具有固定补偿装置的作用, 同时, 其对补偿装置的 变形或运动方向还具有导向作用, 补偿装置的变形或运动方向会更有规律。 除此之外, 由 于凸沿 18 的内径小于第二箱盖 15, 故而本发明中需要的补偿装置的面积会小于第二箱盖 15, 补偿装置所耗费的材料也比较小。 另外, 凸沿 18与补偿装置的连接操作在箱体 1内进 行, 液密封效果比较理想。
本实施例中补偿装置为如图 5或图 8所示与凸沿 18远离箱体 1内壁的端口固定连接且 覆盖在凸沿 18远离箱体 1内壁的端口上的弹性鼓膜 19, 弹性鼓膜 19能在补偿装置活动空 间内朝远离或接近绝缘液体的方向变形。
绝缘液体发生热胀现象时,绝缘液体体积膨胀会挤压弹性鼓膜 19使其朝远离绝缘液体 的方向即接近第二箱盖 15的方向变形, 绝缘液体发生冷缩现象时, 绝缘液体体积收缩, 弹 性鼓膜 19会朝接近绝缘液体的方向即远离第二箱盖 15的方向变形并挤压绝缘液体, 从而 通过弹性变形的方式对绝缘液体的热胀冷缩进行补偿,保证箱体 1内各处均充满绝缘液体, 且箱体 1 内各处以及各电子元件所承受的来自于绝缘液体的压力的基本恒定, 不会因为来 自于绝缘液体的压力过大而导致箱体 1或箱体 1 内的电子元件被压坏, 同时, 采用真空注 油的方式往箱体 1内注油时, 往箱体 1内注入绝缘液体的过程结束后, 弹性鼓膜 19会通过 弹性变形的方式挤压绝缘液体, 保证绝缘液体充满整个箱体 1, 进而保证箱体 1 内的油量 符合要求。
当然, 补偿装置也可以为嵌于如图 2所示凸沿 18内的活塞 (图中未示出), 活塞能在 补偿装置活动空间内朝远离或接近绝缘液体的方向以滑动的方式移动, 此时, 活塞与凸沿 18 内壁之间还可以设置用于阻挡活塞从凸沿 18 内脱出的防脱出结构。 防脱出结构可以为 固设于凸沿 18远离绝缘液体的内壁上的凸出边棱,该凸出边棱可以与箱体内壁为一体式结 构。 本实施例中如图 5所示箱体 1上还开设有分别与外界 (箱体 1外部) 空气以及补偿装 置活动空间相连通的导气孔 114。 导气孔 114可以在弹性鼓膜 19朝接近第二箱盖 15的方 向变形时, 挤压补偿装置活动空间内的空气, 将补偿装置活动空间内的空气从导气孔 114 排出, 在弹性鼓膜 19朝远离第二箱盖 15的方向变形时, 使箱体 1外的空气流入补偿装置 活动空间内, 从而保证弹性鼓膜 19在补偿装置活动空间内更容易发生变形。 导气孔 114的 口径尺寸的大小, 可以根据需要任意设置。
补偿装置活动空间的设置增大了弹性鼓膜 19弹性变形的空间。 当然, 为了实现弹性鼓 膜 19的功能, 在箱体 1内也可以设置其他弹性结构或弹性件来替代上述结构, 当然还需要 配套的运动及防护设计。 例如在箱体 1内固设与导气孔 114相连通且具有弹性的充气囊, 充气囊与导气孔 114的连接处为液密封连接, 以避免绝缘液体从充气囊与导气孔 114的连 接处渗透出箱体 1。 充气囊通过导气孔 114与大气相连通, 充气囊通过弹性变形的方式对 绝缘液体的热胀冷缩进行补偿的原理与弹性鼓膜 19相同, 不过, 采用外部真空注油的方式 往箱体 1 内注油时, 如果气囊没有保护措施, 则需要保证充气囊一直填充有适量空气, 以 保证充气囊始终对绝缘液体能够施加一定的弹性压力; 或同时对气囊抽真空以防止气囊胀 裂。 此外充气囊模式也存在密封问题。
本实施例中如图 5所示弹性鼓膜 19远离箱体 1内壁的一侧设置有压板 20, 压板 20的 边沿将弹性鼓膜 19的边沿抵压于凸沿 18上, 且压板 20的边沿与凸沿 18通过紧固件 201 固定连接在一起, 压板 20的中部区域开设有绝缘液体可自由通过的多个(两个以上)如图 5所示的通孔 202。
本实施例中如图 8所示弹性鼓膜 19与凸沿 18接近的一侧或弹性鼓膜 19与压板 20接 近的一侧固设有呈外凸形的至少一个凸起部 191, 凸沿 18或压板 20上开设有呈内凹形的 凹口, 凸起部 191嵌入凹口内。
凸起部 191与凹口构成的配合结构, 密封更可靠。 凸起部 191优选为与凹口之间过盈 配合。
本实施例中凸起部 191呈环形, 且其轴心线与凸沿 18的轴心线相重合。这种结构整个 凸沿 18与弹性鼓膜 19之间的密封性均比较可靠。
压板 20的作用在于将弹性鼓膜 19可靠的固定住,并且避免弹性鼓膜 19因为变形伸出 凸沿 18太过分而破损, 同时, 压板 20上的多个通孔 202还可以保证绝缘液体能够接触弹 性鼓膜 19, 从而发挥弹性鼓膜 19的作用。 压板 20的设计使得所述 X射线发生器适用于在 真空设备外部和内部两种注油方式。当然,压板 20也可以采用滤网或其他固定结构来取代。 本实施例中如图 5和图 8所示弹性鼓膜 19与压板 20接近的一侧的中部区域呈摺皱形。 褶皱形的弹性鼓膜 19弹性更好, 由于弹性鼓膜 19的边沿区域是比较平坦的, 所以弹性鼓 膜 19呈摺皱形的部分直接放置于凸沿 18的中部, 便可以使得两者对齐, 弹性鼓膜 19安装 也比较方便。
本实施例中如图 5所示压板 20的边沿通过紧固件 201与凸沿 18固定连接在一起。 紧 固件 201为螺钉或其他紧固件。
如图 5所示, 本实施例中凸沿 18与第二箱盖 15为一体式结构。 凸沿 18与第二箱盖 15为一体式结构时, 便于一次成型制造, 且各部分之间连接强度相对于独立的部件组装而 成的结构而言更为牢固。 当然, 凸沿 18也可以与第一箱盖 14或箱本体部 13其中之一为一 体式结构, 凸沿 18也可以与第一箱盖 14、 第二箱盖 15或箱本体部 13其中之一为分体式 结构固定连接而成。箱体 1内凸沿 18的数目可以按照绝缘液体热胀冷缩量的要求, 设置为 一个, 也可以设置两个以上。
本实施例中如图 5和图 10所示箱本体部 13的外表面还存在与箱本体部 13为一体式结 构的多条 (两条以上)加强肋 22, 加强肋 22上开设有螺孔 21, 加强肋 22对称设置于箱本 体部 13上。
加强肋 22一方面可以增强箱本体部 13的强度,另一方面其上的螺孔 21可以与外部的 其他设备或架体进行可拆卸固定连接。
当然, 加强肋 22也可以设置于第一箱盖 14或第二箱盖 15上, 也可以仅设置一条。 如图 2、 图 3和图 5所示, 本实施例中凸沿 18呈圆圈状, 此时, 凸沿 18的横截面的 外轮廓呈圆形,压板 20呈圆盘状,紧固件 201沿压板 20的周向方向等角度分布于压板 20、 弹性鼓膜 19以及凸沿 18上。
这种结构中压板 20、 弹性鼓膜 19以及凸沿 18各处所受到的来自于紧固件 201的抵 压力更为均匀, 压板 20、 弹性鼓膜 19以及凸沿 18, 尤其弹性鼓膜 19不易损坏, 同时, 三 者之间固定连接的稳定性也会更好。
当然, 凸沿 18的横截面也可以为椭圆形、 三角形、 矩形 (包括长方形、 正方形) 或呈 三角形与矩形以外的多边形其中的一种, 当凸沿 18的横截面为矩形时, 压板 20为矩形板。 凸沿 18以及其上的压板 20、 弹性鼓膜 19等结构也可以设置于防护装置 3上, 例如可以设 置于筒体 30、 第一端盖 31或第二端盖 32其中之一上, 此时, 防护装置 3实质上可以视为 一个辐射器件安装箱, 因而也在本发明的保护范围之内。
本实施例中弹性鼓膜 19的材料为丁晴橡胶。 当然, 弹性鼓膜 19也可以为氟橡胶材料 等其他耐油的弹性材料制成。
最后应当说明的是:以上实施例仅用以说明本发明的技术方案而非对其限制;尽管 参照较佳实施例对本发明进行了详细的说明, 所属领域的普通技术人员应当理解: 依 然可以对本发明的具体实施方式进行修改或者对部分技术特征进行等同替换; 而不脱 离本发明技术方案的精神, 其均应涵盖在本发明请求保护的技术方案范围当中。

Claims

权 利 要 求
1、 一种辐射器件安装箱, 包括箱体, 其特征在于: 还包括固设于所述箱体内壁上且呈 圈状的凸沿以及与所述凸沿之间液密封固定连接或液密封活动连接的补偿装置, 其中: 所述补偿装置位置相反的两侧中的其中一侧与所述箱体内壁、 所述凸沿之间形成用于 容纳绝缘液体的液体容纳腔;
与所述补偿装置位置相反的两侧中的其中另一侧相对的所述箱体的内壁与凸沿的内壁 之间形成允许所述补偿装置朝远离或接近所述绝缘液体的方向变形或移动的补偿装置活动 空间。
2、 根据权利要求 1所述的辐射器件安装箱, 其特征在于: 所述补偿装置为与所述凸沿 远离所述箱体内壁的端口固定连接且覆盖在所述凸沿远离所述箱体内壁的端口上的弹性鼓 膜, 所述弹性鼓膜能在所述补偿装置活动空间内朝远离或接近所述绝缘液体的方向变形; 或者, 所述补偿装置为嵌于所述凸沿内的活塞, 所述活塞能在所述补偿装置活动空间 内朝远离或接近所述绝缘液体的方向移动, 所述活塞与所述凸沿内壁之间还设置有用于阻 挡活塞从所述凸沿内脱出的防脱出结构。
3、 根据权利要求 2所述的辐射器件安装箱, 其特征在于: 所述凸沿的横截面的外轮廓 呈圆形、 椭圆形、 三角形、 矩形或三角形与矩形以外的多边形其中的一种;
和 /或,所述箱体上还开设有分别与外界空气以及所述补偿装置活动空间相连通的导气 孔;
和 /或, 所述弹性鼓膜的材料为丁晴橡胶或者氟橡胶;
和 /或, 所述弹性鼓膜通过紧固件固定于所述凸沿上, 或者, 所述弹性鼓膜远离所述箱 体内壁的一侧设置有压板, 所述压板的边沿将所述弹性鼓膜的边沿抵压于所述凸沿上, 且 所述压板的边沿与所述凸沿通过紧固件固定连接在一起, 所述压板的中部区域开设有绝缘 液体可自由通过的一个或两个以上通孔;
和 /或, 所述弹性鼓膜与所述压板接近的一侧的中部区域呈摺皱形;
和 /或, 所述压板呈盘状, 所述紧固件沿所述压板的周向方向等角度分布于所述压板、 所述弹性鼓膜以及所述凸沿上;
和 /或, 所述箱体包括箱本体部、 第一箱盖以及第二箱盖, 其中: 所述第一箱盖以及所述第二箱盖分别固设于所述箱本体部位置相反的两个端口上, 且 所述凸沿固设于所述第二箱盖或所述第一箱盖上;
所述箱本体部为一体式结构, 所述第一箱盖以及所述第二箱盖的材料与所述箱本体部 的材料相同。
4、 根据权利要求 3所述的辐射器件安装箱, 其特征在于: 所述弹性鼓膜与所述凸沿接 近的一侧或所述弹性鼓膜与所述压板接近的一侧固设有呈外凸形的至少一个凸起部, 所述 凸沿或所述压板上开设有呈内凹形的凹口, 所述凸起部嵌入所述凹口内;
和 /或, 所述箱本体部为铝或铝合金材料采用拉伸成形加工或线切割工艺制成; 和 /或, 所述凸沿与所述第二箱盖为一体式结构;
和 /或, 所述箱本体部的外表面还存在与所述箱本体部为一体式结构的至少一条加强 肋, 所述加强肋上开设有螺孔;
和 /或, 所述第一箱盖与所述箱本体部之间和 /或所述第二箱盖与所述箱本体部之间还 设置有密封条, 其中:
所述箱本体部的端面上开设有台阶面或凹槽, 所述密封条嵌于所述台阶面或凹槽内且 延伸出所述箱本体部的端面,所述第一箱盖和 /或所述第二箱盖接近所述箱本体部的表面抵 压于所述密封条延伸出所述箱本体部的端面的部分上; 或者, 所述第一箱盖和 /或所述第二 箱盖的边沿上开设有台阶面或凹槽, 所述密封条嵌于所述台阶面或凹槽内且延伸出所述第 一箱盖和 /或所述第二箱盖的边沿, 所述箱本体部接近所述第一箱盖和 /或所述第二箱盖的 表面抵压于所述密封条延伸出所述第一箱盖和 /或所述第二箱盖的边沿的部分上;
和 /或,所述辐射器件安装箱还包括设置于所述箱体内的准直器以及一层或多层防护装 置, 其中:
所述防护装置为对 X射线具有屏蔽功能的材料制成; 所述准直器与所述防护装置为一 体式结构, 或者, 所述准直器与所述防护装置为单独的两个部件固定连接在一起; 每一层 所述防护装置均开设有射线出口, 且所述射线出口、所述出束孔以及所述出束口三者同轴。
5、 根据权利要求 4所述的辐射器件安装箱, 其特征在于: 所述凸起部呈环形, 且其轴 心线与所述凸沿的轴心线相重合;
和 /或, 所述防护装置呈圆柱形或棱柱形, 且所述防护装置包括筒体、 第一端盖以及第 二端盖, 其中: 所述第一端盖以及所述第二端盖分别与所述筒体位置相反的两个端口固定 连接在一起; 所述第一端盖、所述第二端盖或所述筒体其中之一上至少开设有流体通道和 / 或电路通道;
和 /或, 所述箱体内设置有一层所述防护装置, 所述防护装置与所述箱体之间存在液体 流动和零部件安装空间; 或者, 所述箱体内设置有多层所述防护装置, 多层所述防护装置 中内层的所述防护装置位于外层的所述防护装置之内, 内层的所述防护装置与外层的所述 防护装置之间以及最外层的所述防护装置与所述箱体之间存在液体流动和零部件安装空 间;
和 /或, 所述防护装置为绝缘材料制成;
和 /或, 所述出束口上填充有封堵窗, 所述封堵窗为可透过 X射线的材料制成, 且所述 封堵窗用于在所述箱体内与所述箱体外之间实现液气密封。
6、 根据权利要求 5所述的辐射器件安装箱, 其特征在于: 所述防护装置为铅氧化物制 成;
和 /或, 所述流体通道和 /或所述电路通道为至少开设于所述第一端盖、 所述第二端盖 或所述筒体其中之一上的呈弯曲状的通孔或斜孔; 或者, 至少所述第一端盖、 所述第二端 盖或所述筒体其中之一是由互相叠合的外层板以及内层板所构成的双层结构, 其中: 所述外层板与所述内层板之间存在液体流动腔, 且所述外层板以及所述内层板上均开 设有与所述液体流动腔相连通的导流孔, 所述流体通道由所述导流孔以及所述液体流动腔 构成, 所述外层板上的导流孔沿其轴向方向的正投影与所述内层板上的导流孔完全错开。
7、 根据权利要求 6所述的辐射器件安装箱, 其特征在于: 所述防护装置为四氧化三铅 制成;
和 /或, 所述第一端盖上以及所述第二端盖上均开设有所述流体通道以及所述电路通 道;
和 /或, 所述筒体上嵌有内螺纹管, 所述内螺纹管内开设有内螺纹, 连接螺栓上开设有 外螺纹的部分穿过所述外层板且与所述内螺纹管内的内螺纹相配合并将所述筒体与所述第 一端盖以及所述第二端盖固定连接在一起;
和 /或, 所述内层板上固设有定位凸柱, 所述定位凸柱嵌于所述外层板上的定位沉孔内 且与所述定位沉孔紧配合;
和 /或, 所述筒体的内侧边棱上开设有台阶形的台阶部, 所述台阶部与所述内层板的边 棱相抵接;
和 /或, 所述第二端盖的内层板上开设有至少一个阳极限位孔, 所述阳极上开设有限位 螺孔, 定位螺柱上开设有外螺纹部分与所述限位螺孔相配合, 所述定位螺柱上远离所述限 位螺孔的一端插接于所述阳极限位孔内;
和 /或,所述第一端盖上和 /或所述第二端盖上的所述外层板和 /或所述内层板上沿所述 筒体的周向方向等角度分布有多个所述导流孔, 且每个所述导流孔至所述筒体的轴心线之 间的距离相同;
和 /或,所述第一端盖内的所述外层板上的走线孔包括与所述筒体的轴向方向相重合或 相平行的纵向孔以及与所述纵向孔相连通且轴向方向与所述纵向孔的轴向方向相垂直的横 向孔。
8、 一种 X射线发生器, 其特征在于: 包括 X射线管、 高频高压发生器、 灯丝供电模块 以及油冷循环系统, 其中- 所述 X射线管安装于所述防护装置内, 且所述 X射线管发射出的 X射线依次穿过所述 射线出口、 所述出束孔以及所述出束口并照射出所述辐射器件安装箱的箱体;
所述高频高压发生器与所述 X射线管的阴极以及阳极电连接;
所述灯丝供电模块与所述 X射线管的阴极电连接;
所述油冷循环系统包括液体填充箱、 填充于液体填充箱内的绝缘液体以及用于降低所 述绝缘液体的温度的冷却装置, 所述冷却装置包括油泵、 散热器以及冷却风扇, 其中: 所述液体填充箱由权利要求 1至 7任一所述的辐射器件安装箱构成;
所述散热器位于所述液体填充箱之外, 且所述散热器的进液口与所述液体填充箱的出 液口相连通, 所述散热器的出液口与所述液体填充箱的进液口相连通;
所述油泵为所述液体填充箱内的绝缘液体与所述散热器内的绝缘液体之间的循环流动 提供动力;
所述冷却风扇通过加速所述散热器周围空气流动的方式释放所述散热器上的热量。
9、 根据权利要求 8所述的 X射线发生器, 其特征在于: 所述防护装置上还开设有电路 通道, 所述高频高压发生器由经过所述电路通道的导线或接口与所述 X射线管的阴极以及 阳极电连接, 所述灯丝供电模块由经过所述电路通道的导线或接口与所述 X射线管的阴极 电连接;
组成所述高频高压发生器的模块中至少部分模块位于防护装置与箱体之间, 且箱体外 部电源或组成所述高频高压发生器的模块中的其余部分模块位于所述箱体之外;
所述箱体上开设有出线通道, 组成所述高频高压发生器的模块中位于所述箱体内的部 分模块与位于所述箱体之外的部分模块之间或者所述高频高压发生器与所述箱体外部电源 之间由经过所述出线通道的导线或接口电连接;
所述防护装置包括筒体、 第一端盖以及第二端盖, 所述第一端盖以及所述第二端盖分 别与所述筒体的两个端口固定连接在一起;
所述第一端盖、 所述第二端盖或所述筒体至少其中之一上开设有流体通道以及所述电 路通道。
10、 根据权利要求 9所述的 X射线发生器, 其特征在于: 所述第一端盖以及所述第二 端盖上均为由互相叠合的外层板以及内层板所构成的双层结构, 且所述第一端盖以及所述 第二端盖上均开设有所述电路通道, 其中:
开设于所述第一端盖上的所述电路通道包括开设于所述第一端盖上的内层板上的阴极 定位孔以及开设于所述第二端盖上的外层板上的走线孔, 所述 X射线管内阴极外的护线套 嵌于所述阴极定位孔内, 所述走线孔包括与所述 X射线管的轴向方向相重合或相平行的纵 向孔以及与所述纵向孔相连通且轴向方向与所述纵向孔的轴向方向相垂直的横向孔, 所述 X射线管的阴极由两条导线从所述护线套内引出所述走线孔;
开设于所述第二端盖上的所述电路通道包括开设于所述第二端盖的所述内层板上以及 所述外层板上的阳极定位孔, 导电螺柱依次穿过开设于所述第二端盖的所述外层板上以及 所述内层板上的阳极定位孔, 且所述导电螺柱上开设外螺纹部分与开设于所述阳极上的阳 极螺孔相配合, 所述导电螺柱上远离所述阳极的部分上开设有定位螺孔, 导电螺钉上开设 外螺纹部分与所述定位螺孔相配合, 且导电螺钉的头部与所述导电螺柱之间夹持有分别与 所述高频高压发生器的阳极电连接的导线;
和 /或, 所述第一端盖以及所述第二端盖上均开设有流体通道, 所述第一端盖以及所述 第二端盖均为由互相叠合的外层板以及内层板所构成的双层结构, 所述外层板与所述内层 板之间存在液体流动腔, 且所述外层板以及所述内层板上均开设有与所述液体流动腔相连 通的导流孔, 所述流体通道由所述导流孔以及所述液体流动腔构成;
所述阳极呈罩子状且罩设于所述 X射线管的玻璃罩上远离阴极的一端, 所述阳极与 X 射线管的玻璃罩的周向外表面之间存在液体流动空间, 所述阳极上开设有分别与液体流动 空间以及所述第二端盖上的所述内层板上的所述导流孔相连通的液体流通孔。
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