CN101091232A - X-ray tube - Google Patents
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- CN101091232A CN101091232A CN 200680001416 CN200680001416A CN101091232A CN 101091232 A CN101091232 A CN 101091232A CN 200680001416 CN200680001416 CN 200680001416 CN 200680001416 A CN200680001416 A CN 200680001416A CN 101091232 A CN101091232 A CN 101091232A
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Abstract
Disclosed is an x-ray tube (11) wherein heat dissipation characteristics are improved and insulation characteristics are secured for a long time. In the x-ray tube (11), a supporting body (25) supports an anode target (21) at one end and is provided with a joint portion (28) on the outer surface of the other end portion. The joint portion (28) is joined with the inner surface of a cylinder portion (14a) of a second envelope (14) for improving heat transfer from the supporting body (25) to the second envelope (14) through the joint portion (28). A terminal (38) for supplying a voltage to the anode target (21) is provided on the end face (14b) of the other end portion of the second envelope (14). By arranging the terminal (38) away from the joint portion (28), the temperature of an insulating material (42) for insulation of the terminal (38) is kept low, thereby securing the insulation characteristics for a long time.
Description
Technical field
The present invention relates to X-ray tube, particularly relate to the fixed anode type X-ray tube that anode is fixing.
Background technology
In the past, as the representative X-ray ray tube, fixed anode type X-ray tube was arranged.In fixed anode type X-ray tube, utilize the filament of negative electrode to generate electronics.Utilize high voltage electric field that this electronics is quickened towards plate target, this high-energy electron impinge anode target generates X ray.
Produce heat during this high-energy electron impinge anode target.For the heat that makes this generation distributes to the outside, in fixed anode type X-ray tube, adopt cooling structures such as insulating oil impregnated, forced fluid cold type, forced air cooling type.
In the X-ray tube of insulating oil impregnated, with negative electrode assembly and the vacuum seal of anode assembly in the shell of glass.This shell is installed in the inside of the sheath that is full of insulating oil.This insulating oil carries out electric insulation, absorbs the heat that is produced by the anode assembly simultaneously.Be insulated the outer wall of the heat of oil absorption, dispel the heat to extraneous air by sheath.
In addition, it is such that for example real fair 1-32720 communique is disclosed, and in forcing liquid-cooled X-ray tube, utilizes anode support cylindraceous, supports plate target.For the cooling anodes part, form the cooling path that cooling fluid is passed through in the inner space of this anode support.
In addition, for example special table 2001-504988 communique disclosed like that, in the X-ray tube of forced air cooling type, utilize to be arranged on a distolateral vacuum casting and to be arranged on another distolateral insulation crust, constitute shell.The other end of the anode support of the plate target of portion's support at one end prolongs laterally from the other end of insulation crust, and the other end of this anode support is installed the anode target and supplied with the lead-in wire that high voltage is used.Have again, with encapsulating material, be moulding material, surround the outside of insulation crust and the other end of anode support.In order to carry out the cooling of anode part, make force air pass through the outside of encapsulating material.
In the X-ray tube of in the past insulating oil impregnated, to compare with the X-ray tube that adopts other type of cooling, the size of sheath is big.Employing insulating oil impregnated will become the obstacle aspect the compact design X-ray tube.In addition, in the insulating oil impregnated, owing to use insulating oil, so the assembling of X-ray tube, repairing, comparatively difficulty such as discarded.
In addition, the cooling anodes of the liquid-cooled X-ray tube of the pressure in the past partly cooling fluid of usefulness will use insulating oil or pure water, as the liquid of insulating properties, needs to use the circulating cooling system of special-purpose heat exchanger, circulating pump and flexible pipe.Thereby cost increases, and reliability also reduces.Particularly when using pure water,, need to use the filter of special ion exchange resin for the conductivity of the pure water in preventing to use rises.The problem that needs to produce under the situation of filter is maintenance management trouble, and cost increase.
In addition, though the X-ray tube of forced air cooling type does not in the past have aforesaid insulating oil impregnated and forces the such problem of liquid-cooled X-ray tube,, dispel the heat, so heat dissipation characteristics is poor owing to conduct heat to the low encapsulating material of thermal conductivity from the anode support.So the problem of existence is that the heat load of plate target is fully reduced.Have again, supply with the high voltage supply unit configuration adjacent to each other of using lead-in wire to the radiating part of encapsulating material heat radiation with the installation high voltage from the anode support.Thereby the problem that exists is, the temperature of encapsulating material raises, and the insulation characterisitic of encapsulating material produces deterioration more in early days.
Summary of the invention
The objective of the invention is to, the X-ray tube that a kind of heat dissipation characteristics is good, can guarantee insulation characterisitic for a long time is provided.
The X-ray tube of a form of the present invention is such formation, and it has: at one end side has the 1st shell of the output window that forms the Transmission X ray and at another distolateral cylindrical case with the 2nd shell of electric insulating quality; Be arranged on the plate target in aforementioned the 1st shell; Be arranged on negative electrode in aforementioned the 1st shell, that launch the electronics that shines to aforementioned plate target; Be arranged in the aforementioned shell, at one end side has the junction surface that engages with the inner surface of aforementioned the 2nd shell and at the support of another distolateral support aforesaid anode target; With aforementioned support by the heat insulation in fact configuration in gap, to the terminal of aforementioned support service voltage; And the connecting portion that aforementioned support is electrically connected with aforementioned terminal.
Description of drawings
Figure 1 shows that the concise and to the point cutaway view of the X-ray tube that the present invention's the 1st example is relevant.
Fig. 2 is the cutaway view along the II-II line of X-ray tube shown in Figure 1.
Figure 3 shows that the concise and to the point cutaway view of the X-ray tube that the present invention's the 2nd example is relevant.
Fig. 4 is the cutaway view along the IV-IV line of X-ray tube shown in Figure 3.
Figure 5 shows that the concise and to the point cutaway view of the X-ray tube that the present invention's the 3rd example is relevant.
Fig. 6 is the cutaway view along the VI-VI line of X-ray tube shown in Figure 5.
Figure 7 shows that the concise and to the point cutaway view of the X-ray tube that the present invention's the 4th example is relevant.
Figure 8 shows that the schematic plan view of junction surface end face shown in Figure 7.
Figure 9 shows that the concise and to the point cutaway view of the X-ray tube that the present invention's the 5th example is relevant.
Figure 10 shows that the concise and to the point cutaway view of the X-ray tube that the present invention's the 6th example is relevant.
Figure 11 shows that the concise and to the point cutaway view of the X-ray tube that the present invention's the 7th example is relevant.
Figure 12 shows that the concise and to the point cutaway view of the X-ray tube that the present invention's the 8th example is relevant.
Figure 13 shows that the concise and to the point cutaway view of the X-ray tube that the present invention's the 9th example is relevant.
Figure 14 shows that the concise and to the point cutaway view of the X-ray tube that the present invention's the 10th example is relevant.
Embodiment
Below, with reference to the relevant fixed anode type X-ray tube of description of drawings example of the present invention.
Figure 1 and Figure 2 is the fixed anode type X-ray tube 11 as X-ray tube.X-ray tube 11 has the inside of maintenance and is the shell 12 of vacuum state.Shell 12 is with along distolateral metal the 1st shell 13 of usefulness of the pipe of X-ray tube 11 axial, with another distolateral the 2nd shell 14 combinations that constitute insulation division and constitute.
The 1st shell 13 forms the cap shape (tubular) that the front end external diameter slowly attenuates.The front end face of the 1st shell 13 forms tabular surface.At this flat the output window 15 of Transmission X ray is set, the material that the decay of these output window 15 usefulness X ray is few, for example beryllium (Be) are made, and thickness forms about tens～hundreds of μ m.
The insulating material that electric insulating qualities such as the 2nd shell 14 usefulness aluminium oxide pottery constitutes has formed bottom tube-like.That is, the 2nd shell 14 has: a distolateral tube 14a of portion cylindraceous with opening who is being connected with the 1st shell 13; And the end face portion 14b another end face, that be equivalent to have the bottom that is formed on the 14a of this.In the central authorities of this end face portion 14b, form the installing hole 14c that mounting terminal is used.
In addition, in the inside of the 1st shell 13, with output window 15 relative configuration plate targets 21.At the periphery configuration focusing electrode 22 of plate target 21, at the periphery configuration negative electrode 23 of this focusing electrode 22.Negative electrode 23 is fixed on the peripheral part of focusing electrode 22.
In addition, the support 25 of plate target 21 is supported in the configuration of the central part in shell 12.Support 25 usefulness have for example copper or the copper alloy of conductivity to be made, a distolateral minor diameter that forms, another distolateral major diameter that forms.Plate target 21 is supported at its front end in the one distolateral inboard that is configured in focusing electrode 22.Another distolateral side face engages with the inner peripheral surface of the 14a of tube portion of the 2nd shell 14.The front end face of this plate target 21 covers with tungsten layer.
Another end face of support 25 does not directly contact with the end face portion 14b of the 2nd shell 14, and gap 29 such separate configuration are set betwixt.In addition, form the axial hole portion 30 of opening at another end face of support 25.The hole portion 31 radially that a distolateral formation in 28 the position from the junction surface is communicated with hole portion 30 is arranged again.Utilize these gaps and hole portion 30 and 31, form from the 1st shell 13 to the exhaust channel 32 of the installing hole 14c of the 2nd shell 14.
In addition, in the installing hole 14c of the end face portion 14b of the 2nd shell 14, blast pipe 34 is installed.Blast pipe 34 is the exhaust channels 32 by the inside of passing support 25, carries out the sealing-in parts that vacuum seal is used with carrying out in the shell 12 after the exhaust.Blast pipe 34 is provided with blast pipe 34 is installed in the installation portion of using among the installing hole 14c of the 2nd shell 14 35.
In addition, antianode target 21 is applied the high-tension cable 37 that high voltage uses and be connected to blast pipe 34.That is, this blast pipe 34 is sealing-in parts of sealing-in shell 12 usefulness, also has simultaneously as connecting the function that antianode target 21 applies high-tension cable 37 terminals 38 that high voltage uses.Have, terminal 38 is arranged on the position that the position that engages with junction surface 28 in the 2nd shell 14 is left again.
In the 2nd shell 14, form the metal layer 39 that junction surface 28 is electrically connected with terminal 38.Metal layer 39 is formed on the inner surface of the 2nd shell 14.Metal layer 39 has the side connecting portion 40 of support and terminals side connecting portion 41.Support side connecting portion 40 to be arranged between the 2nd shell 14 and the junction surface 28, be electrically connected with junction surface 28.In addition, terminals side connecting portion 41 is arranged between the installing hole 14c of terminal 38 and the 2nd shell 14, is electrically connected with terminal 38.
Have the insulating material 42 of the insulation moulded resin of insulating properties with for example silicone resin etc., cover outer surface, terminal 38 and the high-tension cable 37 etc. of the end face portion 14b of the 2nd shell 14.
In addition, at the outer peripheral face of the 14a of tube portion of 2nd shell 14 relative, engage with radiator 44 as radiating part with junction surface 28.This radiator 44 utilizes thermal conductivity to form tubular than the high metal material of pottery, the outer peripheral face of the 14a of tube portion of the 2nd shell 14 form the not shown interface that is equivalent to pottery and metal level metal layer, be the metal tunic, the outer peripheral face of the 14a of tube portion engages with the inner surface of radiator 44.The outer peripheral face of radiator 44 according to the axial width along radiator 44, along the circumferencial direction devices spaced apart of radiator 44, is provided with to the outstanding a plurality of fin 45 of external diameter direction.
Thermal stress when relaxing high temperature, the surface configuration of the inner peripheral surface of radiator 44 forms concaveconvex shape.That is, utilize and reach a plurality of recesses 46 that circumferencial direction forms vertically, form and reach a plurality of protuberances 47 that circumferencial direction is cut apart vertically.
In addition, X-ray tube 11 possesses the not shown pressure cooling system of utilizing fluid to force cooling heat dissipation body 44 at least.As this pressure cooling system, though can be according to the heating of X-ray tube 11, selection is for example used the air cooling of air as fluid or is used with the liquid cooling of water as the liquid such as non freezing solution of main component, and preferably maintenance management is relatively easy to air cooling.
Below, the work of the X-ray tube 11 of Figure 1 and Figure 2 is described.
When X-ray tube 11 work, apply high voltage between negative electrode 23 in being placed on shell 12 and the plate target 21, from negative electrode 23 emitting electrons.This electronics utilizes the negative electrode 23 and the potential difference of plate target 21 to quicken, and impinge anode target 21 produces X ray, and the X ray of generation is from output window 15 emissions.
Owing to the bump of electronics anode target 21 produces heat, this heat transmits to support 25.Pass to the heat of this support 25, transmit to the 2nd shell 14 by junction surface 28.Pass to the heat of the 2nd shell 14, transmit to radiator 44.The fluid of the not shown pressure cooling system of the heat of passing to this radiator 44 by acting on radiator 44 carries out forced heat radiation.
In this X-ray tube 11, the junction surface 28 of support 25 engages with the inner peripheral surface of the 14a of tube portion of the 2nd shell 14.Therefore, contact area is big, improves from the conductivity of heat of support 25 to the 2nd shell 14, can improve heat dissipation characteristics.
In addition, in the position of leaving junction surface 28, i.e. the end face portion 14b of the 2nd shell 14, terminal 38 is set.Therefore, can keep the insulate temperature of insulating material 42 of mold of this terminal 38 lower, can guarantee insulation characterisitic for a long time.
In addition, support 25 does not directly contact with terminal 38, but by gap 29 separate configuration, but support 25 utilizes the metal layer 39 that forms in the 2nd shell 14 to be electrically connected with terminal 38.
In addition, utilize the blast pipe 34 of the vacuum seal parts that are also used as shell 12, constitute terminal 38.Thereby amount of parts reduces, designs simplification.
In addition, near the surface configuration the junction surface 28 of support 25 forms concavo-convex, utilizes this protuberance 27 to form junction surface 28.Thereby the thermal expansion of the support 25 during high temperature is absorbed by the strain that this jog carries out, and can relax thermal stress.
Equally, the surface configuration of the inner peripheral surface of radiator 44 forms concavo-convex.Thereby the thermal expansion of the radiator 44 during high temperature is absorbed by the strain that this jog carries out, and can relax thermal stress.
In addition, because radiator 44 utilizes thermal conductivity to form greater than the metal material of pottery, so heat dissipation characteristics is good.Have again, owing to a plurality of fin 45 are set at the outer peripheral face of radiator 44, so the increase of the surface area of radiator 44, heat dissipation characteristics is good.
In addition, utilize not shown pressure cooling system, can force to cool off the outer peripheral face of the 2nd shell 14 by fluid.In this pressure cooling system, utilize radiator 44 can more improve heat dissipation characteristics.
Below, Fig. 3 and Figure 4 shows that the relevant X-ray tube of the present invention's the 2nd example.
In addition, in Fig. 3 and Fig. 4, for the same part of Figure 1 and Figure 2, additional same label, and omit its explanation.
At the outer peripheral face of radiator 44,, along the axially-spaced of radiator 44 at interval, be provided with to the outstanding a plurality of fin 45 of external diameter direction according to ring-type along the circumferencial direction of radiator 44.According to such cooling structure, the surface area of radiator 44 increases, and can more improve heat dissipation characteristics.
Below, Fig. 5 and Figure 6 shows that the relevant X-ray tube of the present invention's the 3rd example.
In addition, identical with the explanation of Fig. 3 and Fig. 4 in Fig. 5 and Fig. 6, for the same part of Figure 1 and Figure 2, additional same label, and omit its explanation.
Will be with the metal flexible parts 51 that form tubular, between the inner peripheral surface of the 14a of tube portion of junction surface 28 and the 2nd shell 14.With the surface configuration of the inner peripheral surface of these flexibility parts 51, form the curved surface of no concave-convex.In addition, the thermal stress that produces because of thermal expansion when relaxing high temperature, the surface configuration of the outer peripheral face of flexible parts 51 forms concaveconvex shape.That is, utilize and reach a plurality of recesses 52 that circumferencial direction forms vertically, form and reach a plurality of protuberances 53 that circumferencial direction is cut apart vertically.The surface of these a plurality of protuberances 53 engages with the inner peripheral surface of the 14a of tube portion of the 2nd shell 14.
By these flexibility parts 51, can be from the junction surface 28 conduct heat to the 2nd shell 14.In addition, can utilize flexible parts 51 to produce strain, the thermal expansion of the support 25 when absorbing high temperature relaxes thermal stress.
Below, Fig. 7 and Figure 8 shows that the relevant X-ray tube of the present invention's the 4th example.
In addition, in Fig. 7 and Fig. 8, for a same part shown in Figure 1, additional same label, and omit its explanation.
The other end of support 25 is engaged with the inner surface of the end face portion 14b of the 2nd shell 14.Thermal stress when relaxing high temperature forms concaveconvex shape with the surface configuration of the other end of support 25.That is, as shown in Figure 8, form utilization and form a plurality of protuberances 27 that cancellate a plurality of recess 26 is cut apart.The surface of these a plurality of protuberances 27 forms as the junction surface 28 that engages with the end face portion 14b of the 2nd shell 14.In addition, all faces at support 25 form exhaust channel 32 vertically.
In addition, the 14a of tube portion at the 2nd shell 14 forms installing hole 14c.It is the blast pipe 34 of vacuum seal parts and terminal 38 that installing hole 14c is installed double as.High-tension cable 37 is connected with blast pipe 34.The position configuration that terminal 38 quite engages with the 2nd shell 14 away from junction surface 28.
In the 2nd shell 14, form the metal layer 39 that junction surface 28 is electrically connected with terminal 38.Metal layer 39 is formed on the inner surface of the 2nd shell 14.Metal layer 39 has the side connecting portion 40 of support and terminals side connecting portion 41.Support side connecting portion 40 to be arranged between the 2nd shell 14 and the junction surface 28, be electrically connected with junction surface 28.In addition, terminals side connecting portion 41 is arranged between the installing hole 14c of terminal 38 and the 2nd shell 14, is electrically connected with terminal 38.
With insulating material 42, cover outer surface, terminal 38 and the high-tension cable 37 etc. of the 14a of tube portion of the 2nd shell 14.
In addition, utilize scolding tin 57, the outer surface of the end face portion 14b of the 2nd shell 14 that end face of radiator 44 and junction surface 28 is relative engages.At another end face of this radiator 44, outstanding laterally a plurality of fin 45 are set.Thermal stress when relaxing high temperature forms concaveconvex shape with the surface configuration of an end face of radiator 44.That is, form utilization and form a plurality of protuberances 47 that cancellate a plurality of recess 46 is cut apart.In addition, X-ray tube 11 possesses the not shown pressure cooling system of utilizing fluid to force cooling heat dissipation body 44.
Then, when 11 work of this X-ray tube, apply high voltage between negative electrode 23 in being placed on shell 12 and the plate target 21, by like this from negative electrode 23 emitting electrons.This electronics utilizes the negative electrode 23 and the potential difference of plate target 21 to quicken, and impinge anode target 21 produces X ray, and the X ray of generation is from output window 15 emissions.
Owing to the bump of electronics anode target 21 produces heat, this heat transmits to support 25.Pass to the heat of this support 25, transmit to the 2nd shell 14 by junction surface 28.The heat of passing to the 2nd shell 14 transmits to radiator 44.The fluid of the not shown pressure cooling system of the heat of passing to this radiator 44 by acting on radiator 44 carries out forced heat radiation.
In this X-ray tube 11, owing to junction surface 28 engages with the inner surface of the end face portion 14b of the 2nd shell 14, so contact area is big.Thereby, improve from the conductivity of heat of support 25 to the 2nd shell 14, can improve heat dissipation characteristics.
In addition, in the position of leaving junction surface 28, i.e. the 14a of tube portion of the 2nd shell 14, terminal 38 is set.Therefore, can keep the insulate temperature of insulating material 42 of mold of this terminal 38 lower, can guarantee insulation characterisitic for a long time.
In addition, support 25 was arranged by the gap with terminal 38 in 29 minutes, but utilized metal layer 39 to be electrically connected.
In addition,, therefore can reduce amount of parts because terminal 38 utilizes the blast pipe 34 of the vacuum seal parts that are also used as shell 12 to constitute, can simplified structure.
In addition, near the surface configuration the junction surface 28 of the support 25 that engages with the inner surface of the end face portion 14b of the 2nd shell 14 forms concavo-convex, utilizes this protuberance 27 to form junction surfaces 28.The thermal expansion of the support 25 the when strain of utilizing this jog to carry out absorbs high temperature can relax thermal stress.
Equally, because that the surface configuration of an end face of radiator 44 forms is concavo-convex, the thermal expansion of the radiator 44 when therefore the strain of utilizing this jog to carry out absorbs high temperature can relax thermal stress.
In addition, as previously mentioned, owing to utilize thermal conductivity to form radiator 44 greater than the metal material of pottery, so heat dissipation characteristics is good.Have again, owing to a plurality of fin 45 are set at another end face of radiator 44, so the increase of the surface area of radiator 44, it is good to improve heat dissipation characteristics.In addition, utilize not shown pressure cooling system can force cooling heat dissipation body 44 by fluid.
Below, Figure 9 shows that the relevant X-ray tube of the present invention's the 5th example.
In addition, in Fig. 9, for a same part shown in Figure 7, additional same label, and omit its explanation.
At the outer peripheral face of radiator 44, be provided with to the outstanding a plurality of fin 45 of external diameter direction along the circumferencial direction of the bottom of radiator 44.This fin 45 forms ring-type around the bottom of radiator 44, and is provided with at interval along the axially-spaced of radiator 44.In such structure, the surface area of radiator 44 increases, and can more improve heat dissipation characteristics.
Below, Figure 10 shows that the relevant X-ray tube of the present invention's the 6th example.
In addition, in Figure 10, for a same part shown in Figure 7, additional same label, and omit its explanation.Junction surface 28 is identical with the 4th example with the inner surface of the end face portion 14b of the 2nd shell 14 basic structure that engage, X-ray tube.
The pressure cooling system 61 of cooling heat dissipation body 44 makes the pipeline 62 of fluid flow engage with the bottom of radiator 44.By making with water is that the liquid such as non freezing solution of main component circulates pipeline 62 in as fluid, carries out heat exchange with passing to the heat of radiator 44 and pipeline 62 interior liquid, thereby forces to cool off.By using the pressure cooling system 61 of liquid, can more improve heat dissipation characteristics as this fluid.
Below, Figure 11 shows that the relevant X-ray tube of the present invention's the 7th example.
In addition, in Figure 11, for a same part shown in Figure 10, additional same label, and omit its explanation.Junction surface 28 is identical with the 6th example with the inner surface of the end face portion 14b of the 2nd shell 14 basic structure that engage, X-ray tube and pressure cooling system 61 etc.
Form discoideus flexible parts 51 with metal, between the inner surface of the end face portion 14b of junction surface 28 and the 2nd shell 14, and both are engaged.The surface configuration of an end face of the flexible parts 51 that will engage with junction surface 28 forms the curved surface of no concave-convex.In addition, the thermal stress when relaxing high temperature, the surface configuration of another end face of the flexible parts 51 that will engage with the inner surface of the end face portion 14b of the 2nd shell 14 forms concavo-convex.That is, form utilization and form a plurality of protuberances 53 that cancellate a plurality of recess 52 is cut apart.The surface of these a plurality of protuberances 53 engages with the inner surface of the end face portion 14b of the 2nd shell 14.
By the flexible parts 51 between the inner surface of the end face portion 14b of junction surface 28 and the 2nd shell, can be from the junction surface 28 conduct heat to the 2nd shell 14.And, utilize flexible parts 51 to carry out strain, the thermal expansion of the support 25 when absorbing high temperature can relax thermal stress.
Below, Figure 12 shows that the relevant X-ray tube of the present invention's the 8th example.
In addition, in Figure 12, for a same part shown in Figure 7, additional same label, and omit its explanation.Junction surface 28 is identical with the 4th example with the inner surface of the end face portion 14b of the 2nd shell 14 basic structure that engage, X-ray tube 11.
As shown in figure 12, bottom 60 is fixed into one with radiator 44, and for this bottom 60, the pressure cooling system 61 of cooling heat dissipation body 44 utilizes screw to be fixed on the bottom 60, can pull down.Utilize this pressure cooling system 61, can more improve heat dissipation characteristics.In addition, therefore pressure cooling system 61 can be installed and removed and be changed easily owing to utilize screw to fix.
Below, Figure 13 shows that the relevant X-ray tube of the present invention's the 9th example.
In addition, in Figure 13, for a same part shown in Figure 12, additional same label, and omit its explanation.Junction surface 28 is identical with the 8th example with the inner surface of the end face portion 14b of the 2nd shell 14 basic structure that engage, X-ray tube 11 and pressure cooling system 61 etc.In addition, identical with structure shown in Figure 13, pressure cooling system 61 utilizes screw to be fixed on the bottom 60, can pull down.
Below, Figure 14 shows that the relevant X-ray tube of the present invention's the 10th example.
In addition, in Figure 14, for a same part shown in Figure 1, additional same label, and omit its explanation.Junction surface 28 is identical with the 1st example with the inner surface of the 14a of tube portion of the 2nd shell 14 basic structure that engage, X-ray tube 11.
With an end face of radiator 44, engage with the 14a of tube portion of the 2nd shell 14.In addition, another end face of radiator 44 is prolonged, make its covering insulating material 42, distolateral bottom 60 is set its another, and utilizes screw that pressure cooling system 61 is fixed on this bottom 60.
According to this example,, therefore can improve heat dissipation characteristics, and can guarantee long-term reliable insulation characterisitic because insulating material 42 can dispel the heat by radiator 44.Particularly, therefore can cool off X-ray tube effectively owing to directly utilize pressure cooling system 61 to come cooling heat dissipation body 44.In addition, owing to utilize screw to fix pressure cooling system 61, therefore install and remove easily and change.
In addition, the present invention intactly is defined in above-mentioned example, its implementation phase can in the scope that does not break away from its main points, change inscape and specialize.In addition, can form various inventions by the appropriate combination of a plurality of inscapes that above-mentioned example disclosed.In addition for example, also can consider to adopt the formation of deleting several inscapes from the whole inscapes shown in the example.Have again, also can the different described inscape of example of appropriate combination.
In addition, in the scope that does not break away from main points of the present invention, carry out various distortion, can implement too certainly.
Industrial practicality
The invention provides the X-ray tube that heat dissipation characteristics is good, can guarantee for a long time the insulation characteristic of insulating materials.
Claims (8)
1. X-ray tube is characterized in that possessing:
At one end side has the 1st shell of the output window that forms the Transmission X ray and at another distolateral cylindrical case with the 2nd shell of electric insulating quality;
Be arranged on the plate target in described the 1st shell;
Be arranged on negative electrode in described the 1st shell, that launch the electronics that shines to described plate target;
Be arranged in the described shell, at one end side has the junction surface that engages with the inner surface of described the 2nd shell and at the support of the described plate target of another distolateral support;
With described support by the heat insulation in fact configuration in gap, to the terminal of described support service voltage: and
The connecting portion that described support is electrically connected with described terminal.
2. X-ray tube as claimed in claim 1 is characterized in that,
Described connecting portion is the metal layer in the inner surface formation of described the 2nd shell.
3. X-ray tube as claimed in claim 1 is characterized in that,
The heat that to be produced by described plate target, transmit by described support is set to the shed radiating part of usefulness of outside at described the 2nd shell.
4. X-ray tube as claimed in claim 1 is characterized in that,
Described terminal also has the sealed portion of described shell being carried out vacuum seal.
5. X-ray tube as claimed in claim 1 is characterized in that,
Described junction surface is configured in described the 2nd shell and described support radially reaches axial a certain direction position relative to each other.
6. X-ray tube as claimed in claim 1 is characterized in that,
The surface configuration of the part of described support forms concavo-convex, and described junction surface comprises the part that forms this convex.
7. X-ray tube as claimed in claim 1 is characterized in that,
Also possess the flexible parts that are arranged between described junction surface and described the 2nd shell.
8. X-ray tube as claimed in claim 1 is characterized in that,
Also possesses the cooling system that utilizes fluid to force the outer surface of described the 2nd shell of cooling.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP248202/2005 | 2005-08-29 | ||
| JP2005248202 | 2005-08-29 | ||
| JP227555/2006 | 2006-08-24 |
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| Publication Number | Publication Date |
|---|---|
| CN101091232A true CN101091232A (en) | 2007-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200680001416 Pending CN101091232A (en) | 2005-08-29 | 2006-08-25 | X-ray tube |
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| CN104934282A (en) * | 2014-03-20 | 2015-09-23 | 株式会社东芝 | Fixed anode X-ray tube device and manufacture method thereof |
| CN105917188A (en) * | 2013-11-19 | 2016-08-31 | 瓦里安医疗系统公司 | High power x-ray tube housing |
| CN108780728A (en) * | 2015-12-25 | 2018-11-09 | 株式会社尼康 | Charged particle devices, the manufacturing method of works and works manufacture system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102293067A (en) * | 2009-01-20 | 2011-12-21 | 西门子公司 | Radiant tube and particle accelerator having a radiant tube |
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