CN103705254B - The refrigerating unit of computer X-ray computed tomography scanning instrument stand - Google Patents

Abstract

The present invention relates to a kind of refrigerating unit for cooling computer X-ray computed tomography scanning instrument stand (1), this stand comprise stand shell (2) and can relative to this stand shell rotate, there is x-ray source and the rotor of at least one coolant hose (8) (4), wherein, coolant hose (8) is integrated in the rotation framework (3) that can rotate ground supporting relative to stand shell (2), and has multiple pipeline section (9) being in the plane orthogonal with stand (1) rotation (R).

Description

The refrigerating unit of computer X-ray computed tomography scanning instrument stand

Technical field

The present invention relates to the refrigerating unit of a kind of computer X-ray computed tomography scanning instrument stand. Computer X-ray computed tomography scanning instrument is especially designed in medical skill and generates X-ray technology sectioning image. Equally, computer X-ray computed tomography scanning instrument can also be used in material nondestructive testing.

Background technology

The stand of computer X-ray computed tomography scanning instrument comprises the part of a non-rotary annular substantially, is commonly referred to stand shell. Stand shell generally has fixing supporting frame, secure shroud or flow deflector on it. Also by applicable bearing on supporting frame, such as rolling bearing, is bearing in the part of the annular equally substantially rotated when computer X-ray computed tomography scanning instrument works, is commonly referred to stand rotor. It is different from direct supporting, it is also possible to by partially inclining frame and thus can be fixed on supporting frame with partially inclining by rotor. Rotor comprises again the rotation framework being called drum or bucket frame, and all turning unit (especially the detector of at least one X-ray radioactive source and at least one cooperation effect with it) is all fixed on and rotates on framework. Rotate framework usually by metal founding, especially aluminium casting composition. Rotate framework to be bearing on stand shell by the sustained ring being typically made of a steel in end side.

As in the computer X-ray computed tomography scanning instrument of X-ray technology equipment, be converted to heat for the electric power major part needed for the work of X-ray radioactive source, and only smaller it be partially converted to X-ray. Due to this reason, should ensureing that X-ray radioactive source fully cools, this such as can be realized by the air cooling apparatus in stand.

By the stand of the known a kind of computer X-ray computed tomography scanning instrument of DE102005041538B4, it comprises sustained ring, and for supporting rotatable rotation balladeur train, wherein, sustained ring has for carrying refrigerant to rotating balladeur train, that is the cooling channel of air. There are many gangways and the cross section circumferentially changed in cooling channel, and here, the cross section of change can adapt with the amount of coolant taken out in cooling channel.

DE10304661B4 discloses the method for another kind by air cooling apparatus cooling computer X-ray computed tomography scanning instrument stand. In this case, stand shell can be bearing on computer X-ray computed tomography scanning instrument fixed part by bearing with partially inclining. Cold gas input unit is set, for being introduced in stand shell from fixed part by cooling draught in the region of bearing.

WO2008/052735A1 relates to the refrigerating module being particularly useful for cooling medical facilities. Even if medical facilities also relate to computer X-ray computed tomography scanning instrument in this case, wherein, refrigerating module cools the inner air in its stand. This refrigerating module comprises gas-liquids interchanger, gas blower and is at least partially integrated in controller wherein.

By the refrigerating unit of DE19945413A1 another kind known for computer X-ray computed tomography scanning instrument stand, it has at least one interchanger flowing through liquid medium. Liquid medium can relate to cooling and the insulation oil of the X-ray radioactive source around computer X-ray computed tomography scanning instrument. The interchanger of approximate annular is made up of the heat exchanger component of rectangle one by one generally, as they use in the automotive industry.

DE2010013604A1 also discloses a kind of computer X-ray computed tomography scanning instrument having liquid-cooling equipment. On the rotor of computer X-ray computed tomography scanning instrument stand, at least one X-ray tube and a liquid-cooling system are installed. Liquid-cooling system extends along the distance from the different size of rotation, therefore produces centrifugal force in various degree. In order to improve pressure in a cooling system, if the common balance volume rotated, it is loaded by mass elements, increases the pressure acting on cooling liqs that centrifugal force causes.

Summary of the invention

It is an object of the invention to, compared with above-listed prior art, improve the refrigerating unit of computer X-ray computed tomography scanning instrument stand further, especially can be designed to save locus and have high peak value cooling power.

Above-mentioned purpose is realized by the refrigerating unit of a kind of computer X-ray computed tomography scanning instrument stand, this stand has stand shell and that can rotate, to comprise x-ray source rotor relative to this stand shell, this rotor has at least one coolant hose, by the present invention, described coolant hose is integrated in the rotation framework that can support with rotating relative to stand shell, and has multiple pipeline section being in the plane orthogonal with axis of gantry rotation line.

This kind of refrigerating unit is used for the stand of cooling computer X-ray computed tomography scanning instrument, this stand comprise stand shell and can relative to this stand shell rotate, there is x-ray source and the rotor of at least one coolant hose, wherein, coolant hose is integrated in the radial section of rotation framework of rotor in the rotor-side of stand, and has multiple pipeline section being in the plane orthogonal with axis of gantry rotation line. These pipeline sections here form interchanger, when computer X-ray computed tomography scanning instrument works, this interchanger by heat dissipation to the air of surrounding. The air heated by interchanger can such as be drawn from computer X-ray computed tomography scanning instrument, and/or inner by another fixing interchanger cooling at computer X-ray computed tomography scanning instrument.

In some forms of implementation, interchanger designs the rotor-side at stand with saving position especially, and wherein, pipeline section presses monolayer alignment in rotation framework.

By a kind of form of implementation alternatively, pipeline section point multilayer is arranged in and rotates in framework. In this case, compared with former form of implementation, while only requiring appropriateness to increase structure space, cooling power significantly improves.

In both cases, interchanger is arranged on based on it and rotates frame end side, causes cooling air to have good mobility and have the big heat transfer area that can utilize.

Interchanger is integrated or is integrated in and rotate in framework, it is also possible to ensure as heating agent provides big volume, it is not necessary to a large amount of additional structure space, or can not seriously weaken the load bearing structure rotating framework. The storage volumes that interchanger is big is especially guaranteed short-term and receives the very high peak heat power produced by x-ray source or multiple x-ray source. Meanwhile, being conducive to the setting of flow technique by this kind of interchanger, the thermal power also making it possible to continue from coolant hose to environment to discharge is extremely high. Compared with first having technology, the cooling power of this kind high can shorten cooling interval or eliminate cooling interval completely, and this has equal meaning with the time that utilizes correspondingly increasing computer X-ray computed tomography scanning instrument.

X-ray source energy is so that the mode of assembling is fixed on the axial direction part rotating framework. Rotate framework generally include axial direction part and radial section, radial section have establish therein/it above pipeline section. Preferably contrary with radial section, axial direction part does not have the through-flow cooling of liquid.

Stand shell has fixing supporting frame usually, secure shroud or flow deflector on it. In some embodiment, supporting frame comprises the frame that partially inclines, and its axis that partially inclines becomes vertical orthogonal directed with the rotation of rotor.

Preferably further develop by one, the supporting frame that itself can not rotate, there is the annular cooling air channels extended vertically with regard to axis of gantry rotation line, described can be rotated to support on this supporting frame with the rotor of X-ray radioactive source and the common interchanger rotated. Carry out carrying from stand shell to stand rotor air here by least one gas blower. At least one is impelled the gas blower that air carries, it is possible to or be arranged on the outside of stand or be arranged on the inside of stand. By preferred mode, (at least one) gas blower of some amount, the cooling power of its quantity and requirement adapts, and they are in that side of frame of partially inclining, that is in stand that side non-rotary, is arranged in cooling air channels generally annularly. By the cooling air channels of annular on the one hand, as long as it is in stand that side non-rotary, just can arbitrary extent, almost all equip gas blower when needed, and the degree filling of the rotation Duan Yigao of another aspect cooling air channels forms the pipeline section of interchanger, thus cause the high hot-fluid by stand in the narrowest space.

By a kind of preferred structure formation of stand, cooling air channels is set, with regard to the rotation of rotor, it on supporting frame or in have a cooling air input section directed vertically, and have one radially directed radially to export section around the cooling air of stand rotor. Unlike this, such as, can also realizing a kind of structure formation, by this kind of structure formation, stand mainly can flow through cooling air on the whole vertically.

As the fluid by the coolant hose flowing in stand rotor-side, can such as utilize water or oil. Fluid in inflow heat exchanger is preferably also directly used in cooling x-ray source.

Form the pipeline section of interchanger, being perpendicular to the radial internal plane of rotation, relative to the rotation of stand, it is preferable that be at least similar to and tangentially extend.

By the first scheme, the mutual concentric arrangement of multiple pipeline section, wherein pipeline section is respectively along the tangential extension of stand. By the 2nd kind of flexible program, coolant hose volution is arranged on and rotates in framework.

In this two schemes, pipeline section can directly by forming in the hole rotated in framework basic material. Alternatively, the independent conduit that coolant hose is designed to rotation framework is fixedly connected with.

In the horse structure form of all explanations, in order to improve thermal conduction, selectively in order to guide cooling air targetedly in stand inside, coolant hose can also be connected with cooling fin heat conduction. These cooling fins can such as be in rotating frame not directly by the axial direction part of liquid cooling.

The constitutional features of described refrigerating unit is (not only about interchanger but also about its peripheral member, especially the constitutional features of wall or cooling air pipe guide element), when utilizing this kind of unified general planning, (this general planning rotates in framework based on being integrated in rotor-side by interchanger all the time, that is be located in rotor bottom), it is possible to what realize cooling power is a kind of very flexibly with for the appropriate design of load. Such as by changing the quantity of heat exchanger wall, or with the use of the diameter that the pipeline section forming interchanger changes, obtain changing easily possibility. It is also possible to, in the bottom of stand rotor or only settle single interchanger, or settle multiple interchanger.

In any case by rotating at least one interchanger integrated in framework, especially causing on front side of rotor can the structure space of flexible utilization.

The cooling medium pump being connected with coolant hose is such as located on the rotor of stand in end side. Equally, in end side, especially in the front side of rotor, it is also possible to establish balance container, it becomes parts of refrigerating unit. But balance container can also be in rotor cover towards the rear side of supporting frame or rotor circumferentially.

The advantage of the present invention is especially, by interchanger being integrated in the rotation framework of stand in rotor-side, not only make the some parts good heat transfer that computer X-ray computed tomography scanning instrument is located at outside rotor, and the structure space existed in stand rotor-side can be made full use of.

Accompanying drawing explanation

By accompanying drawing, embodiments of the invention are described in detail below. Wherein part represents very simplifiedly:

Fig. 1 represents the partial cross-section of computer X-ray computed tomography scanning instrument stand;

Fig. 2-5 schematically illustrates computer X-ray computed tomography scanning instrument stand different schemes sectional view;

Fig. 6 represents the sectional view of coolant hose in computer X-ray computed tomography scanning instrument stand; And

Fig. 7 represents the view of computer X-ray computed tomography scanning instrument stand end side.

Corresponding each other in all the drawings or act on identical part and adopt same Reference numeral to represent.

Embodiment

Its overall by reference numeral 1 indicates the stand that local represents in FIG, being the integral part of the computer X-ray computed tomography scanning instrument not represented further in figure, the basic function about computer X-ray computed tomography scanning instrument stand can first have technology see what foreword was quoted.

Stand 1 has annulus planar configuration substantially generally, it comprises the stand shell 2 that can not rotate and can only partially incline, and by bearing, especially rolling bearing, the rotation framework 3 being rotatably fixed on stand shell 2, it is also referred to as drum or bucket frame and has multiple component, and these component jointly form the rotor 4 of stand 1 with rotating framework 3.

As the component of rotor, in FIG except rotate framework 3 outer also can see be fixed on x-ray source 6 above it and beam diaphragm 7, the latter is arranged on from the ray track of the X beam of x-ray source 6 transmitting. Rotate framework 3 to be made up of radial section 10 and the cylindrical shell shape axial direction part 11 that is attached thereto, radial section 10 can be rotated to support on supporting frame by bearing, it is be bearing in partially inclining on frame of stand shell 2 here, and axial direction part 11 is at the outer surface of the surface formation rotor 4 of outside.

In addition Fig. 1 also represents the coolant hose 8 being located in radial section 10, some pipeline sections 9 that it is in a plane orthogonal with stand 1 rotation by or circumference extension tangential along rotor 4 form and play interchanger, are particularly useful for discharging the heat produced by x-ray source 6. The refrigerant stream represented with wide arrow in FIG mainly flows through stand 1 vertically. Represent inner and on its border at rotor 4 by narrow arrow in FIG, especially rotating framework 3 surface and the hot-fluid between coolant hose 8 and x-ray source 6 and heat carrier flow.

In order to be guided on the surface at the rotor 4 of stand 1 targetedly by cooling air, the wall 18 of stand shell 2 is in axial direction part 11 outside radially, and it is partially enclosed, forms flow passage 12. In the embodiment pressing Fig. 1, cooling air stream is from the rear side of stand 1 towards front side flow. When cooling air flows out from the annular cooling air channels 12 of axial direction part 11 with wall 18 formation by rotating framework 3, cooling air radially deflects.

Computer X-ray computed tomography scanning instrument can not rotate or the parts that partially incline are in the outside of stand shell 2, wherein only illustrate schematically fixing refrigerating unit 14 in FIG. Fixing refrigerating unit 14, as the refrigerating unit realized by coolant hose 8 on the rotor 4 of stand 1, work by air-liquid heat-exchanger and can be flow through vertically equally, wherein the flow direction of air in fixing refrigerating unit 14, contrary with the cooling air flow path direction in cooling air channels 12.

After the air to be cooled flows out from fixing refrigerating unit 14, the air cooled first radially inwardly the flow direction partially incline frame 13 parts of stand shell 2 (it be), and flow back in cooling air channels 12 further, thus in computer X-ray computed tomography scanning instrument, form closed cooling air circulation.

Therefore, the heat produced by x-ray source 6 when computer X-ray computed tomography scanning instrument works, on the one hand in end side, that is pass to cooling air rotating that side that framework 3 faces the frame 13 that partially inclines, only pipeline section 9 is set in this side rotating framework 3 here, and heat also passes to cooling air from the axial direction part 11 rotating framework 3 on the other hand. Therefore from the heat of x-ray source 6, not only direct but also indirect, that is by radial section 10 with being integrated in pipeline section 9 wherein, flow to axial direction part 11.

Can also realizing some forms of implementation in the way of not representing in scheming, wherein cooling air is only once guided by cooling air channels 12, and then discharges from computer X-ray computed tomography scanning instrument.

Fig. 2 only represents rotor 4, it does not have represent the stand shell 2 of stand 1, and compared with the embodiment shown in Fig. 1, illustrates by the embodiment of Fig. 2 and is rotating the two schemes forming coolant hose on framework 3. Here, in the surface, end side rotating framework 3 radial section 10, such as, process some grooves by machining and/or by casting, the cross section of their definition pipeline sections 8. When pad establish sealing member 20, the surface of radial section 10 is laid cover plate 21, thus closes the cross section of pipeline section 8. By the mode not having to represent, such as, by screw, cover plate is fixedly connected with other parts rotating framework 3.

Lower part of Fig. 2 illustrates another kind of pipeline section 8 arrangement that is the scheme of multilayer. In this case, still when pad establish sealing member 20, cover plate 21 is laid matching board 22, this matching board 22 has some grooves, and these grooves form the groove of pipeline section 8 cross section corresponding to the definition in radial section 10 presented hereinbefore. Here, the mirror symmetry shaping each other of the pipeline section 8 in cover plate 21 both sides, wherein the plane of symmetry is in cover plate 21 central authorities. Pipeline section 8 is also completely integrated in the rotation framework 3 of stand 1 in this case.

The fluid flowing through pipeline section 8 oily consistent with cooling x-ray source 6 in the situation shown in fig. 2. Therefore single thermal barrier is had to circulate, by heating agent in this thermal barrier circulates, that is oil, receive the heat of x-ray source 6, and spread out of by forming the water cooler of pipeline section 8 from x-ray source 6. In order to be connected on fluid technique between the parts to be cooled with the pipeline section 8 rotated in framework 3, if connecting section 15.

The multi-layer type form of implementation laying pipeline section 8 in the layer that two or more are parallel to each other represented in fig. 2, can realize equally in the embodiment pressing Fig. 1 or in the embodiment of Fig. 3, Fig. 4 or Fig. 5. The rotation of stand 1 represents with R. In all schemes, by least one the gas blower 17 in stand 1 non rotating side, produce targetedly by the cooling air stream of stand 1.

The scheme of stand 1 rotor-side refrigerating unit from the different combinations of the geometric configuration rotating framework 3 radial section 1 is represented by the embodiment of Fig. 3 and Fig. 4.

In the example pressing Fig. 3, pipeline section 8 is imbedded in radial section 10 completely, and wherein, the wall of pipeline section 8 is directly by the basic material of radial section 10, and such as steel is formed.

In the embodiment pressing Fig. 4 then on the contrary, pipeline section 8 is by independent conduit, and such as copper pipe is formed, and it is fixed on radial section 10.

Schematically illustrating stand 1 refrigerating unit by the embodiment of Fig. 5, wherein cooling air flows in stand shell 2 vertically, and radially leaves stand shell 2. In the annular cooling air input section 16 that the Inner Constitution of the frame 13 that partially inclines is directed vertically, wherein it is arranged on the gas blower 17 not represented here.

Cooling air channels 12 design in stand shell 2 cooling air input section 16 and same cooling air channels 12 be between the section in rotor 4, only there is little end play, cooling air stream is not significantly affected by it. The cooling air being rolled up 8 heating by pipe is finally radially discharged, and the cooling air for this reason using cooling air channels 12 to be integrated in stand shell 2 exports section 19. The cooling air of heating, preferably by the fixing water cooler not represented here, returns and guides in cooling air input section 16, even if thus in this case, also as, in the embodiment pressing Fig. 1, closed cooling air stream.

The shape of the schematic sectional graph representation coolant hose 8 of stand 1 in Fig. 6, it is applicable to by the various embodiments of Fig. 1 to 5: coolant hose 8 is depicted as a spiral-line, and its central spot is on rotation R.

Fig. 7 represents the partial top view of rotor 4 front of stand 1 very simply, and stand 1 is in side thereafter, that is faces that side of stand shell 2, has by the liquid-cooling equipment one of Fig. 1 to 5 Suo Shi. Parts as stand refrigerating unit illustrate cooling medium pump 23, and it is the same with the balance container not represented, are connected on fluid technique with pipeline section 9 equally.

In a word, different from traditional refrigerating module, by at their each parts of spatial separation, that is part be located at front side (such as cooling medium pump 23) and partly integrated be arranged on to rotate in framework 3 (form the pipeline section 9 of water cooler), stand refrigerating unit is modified design, thus compared with first having technology, especially can utilize additional structure space on front side of stand.

Claims (12)

1. the refrigerating unit of computer X-ray computed tomography scanning instrument stand (1), this stand has stand shell (2) and can rotate relative to this stand shell (2), comprise the rotor (4) of x-ray source (6), this rotor (4) has at least one coolant hose (8), wherein, described coolant hose (8) is integrated in the rotation framework (3) that can rotate ground supporting relative to stand shell (2), and have multiple pipeline section (9) being in the plane orthogonal with stand (1) rotation (R), wherein, described coolant hose (8) volution is arranged on and rotates in framework (3).

2., according to refrigerating unit according to claim 1, it is characterized by, described pipeline section (9) by monolayer alignment rotating in framework (3).

3. according to refrigerating unit according to claim 1, it is characterized by, described pipeline section (9) point multilayer is arranged in and rotates in framework (3).

4. according to refrigerating unit according to claim 1, it is characterized by, described rotation framework (3) has the radial section radially extended and the axial direction part (11) being attached thereto and extend vertically, wherein, at the upper fixing x-ray source (6) of axial direction part (11).

5. according to refrigerating unit according to claim 4, it is characterized by, the axial direction part (11) of described rotation framework (3) does not have the through-flow cooling of liquid.

6. according to refrigerating unit according to claim 1, it is characterized by, described stand shell (2) has supporting frame (13), and this supporting frame is designed to partially incline frame, and its axes normal that partially inclines is directed in rotor (4) rotation (R).

7. according to refrigerating unit according to claim 6, it is characterized by, described supporting frame (13) has annular cooling air channels (12), and the latter is designed for and inputs cooling air to rotor (4).

8. according to refrigerating unit according to claim 7, it is characterized by, described cooling air channels (12) have the rotation with regard to rotor (4) (R) with regard to cooling air input section (16) directed vertically and radially directed cooling air output section (19).

9. according to the refrigerating unit one of claim 1 to 8 Suo Shu, it is characterized by, multiple pipeline section (9) is concentric arrangement mutually.

10. according to the refrigerating unit one of claim 1 to 8 Suo Shu, it is characterized by, pipeline section (9) is directly by forming in the hole rotated in framework (3) basic material.

11., according to the refrigerating unit one of claim 1 to 8 Suo Shu, is characterized by, and coolant hose (8) is designed to independent conduit.

12., according to the refrigerating unit one of claim 1 to 8 Suo Shu, is characterized by, and the cooling medium pump (23) being connected with described pipeline section (9) is arranged on the end side of rotor (4).