CN117832046A - X-ray source shielding protection structure and X-ray tube assembly - Google Patents

Abstract

The invention discloses an X-ray source shielding protection structure and an X-ray tube assembly, wherein the X-ray source shielding protection structure comprises: the first shielding structure is covered on the periphery of the X-ray tube, is arranged in a cylinder shape with two open ends, and is provided with a first ray port on the side part; the two second shielding structures are respectively plugged at openings at two ends of the first shielding structure and form an X-ray tube accommodating cavity with the first shielding structure; the second shielding structures are insulators, wherein one second shielding structure is close to the cathode side of the X-ray tube, and the other second shielding structure is close to the anode side of the X-ray tube. The second shielding structure can be added at the nearest position of the high-voltage areas near the two ends of the X-ray tube, can shield the X-ray to the surrounding range of the X-ray tube, realizes the most compact shielding structure, reduces the design size, reduces the weight of equipment and achieves good X-ray shielding effect.

Description

X-ray source shielding protection structure and X-ray tube assembly

Technical Field

The invention relates to the technical field of electrical equipment, in particular to an X-ray source shielding protection structure and an X-ray tube assembly.

Background

This section provides merely background information related to the present disclosure and does not necessarily constitute prior art.

The X-ray source is widely applied to the fields of medical treatment, security inspection, industry and the like, and the human body can have a certain influence on the life health of the human body after being irradiated by X-rays for a long time. The correct use of the X-ray source, avoiding the leakage or scattering of X-rays to a non-working area, is a basic requirement in the design of the X-ray source, and a common X-ray shielding method is to shield a lead structural member, and select lead structures with different thicknesses to wrap the shielding according to the intensity of different X-rays, so that the effect of ray leakage protection can be achieved, but the general X-ray source using the lead shielding has larger volume and heavy weight and cannot meet the requirements of a plurality of application occasions on small volume, light weight and convenient installation and carrying of the X-ray source.

In addition, the two ends of the X-ray tube are high-voltage areas, and the lead structure is larger because of the insulation problem between lead and high-voltage wires, which is one of the important reasons that the whole structure is large in design size and heavy in weight.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defects of large design size and heavy weight when the lead structure is adopted to shield the X-rays at present, so as to provide the shielding and protecting structure of the X-ray source and the X-ray tube assembly.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

an X-ray source shielding structure comprising:

the first shielding structure is covered on the periphery of the X-ray tube, is arranged in a cylinder shape with two open ends, and is provided with a first ray port on the side part;

the two second shielding structures are respectively plugged at openings at two ends of the first shielding structure and form an X-ray tube accommodating cavity with the first shielding structure; the second shielding structures are insulators, wherein one second shielding structure is close to the cathode side of the X-ray tube, and the other second shielding structure is close to the anode side of the X-ray tube.

Further optimizing the technical scheme, the first shielding structure is a lead shielding structure, and the second shielding structure is a lead yellow shielding structure.

Further optimizing technical scheme, install the insulating cylinder between first shielding structure and the X-ray tube, the insulating cylinder is used for avoiding taking place the phenomenon of striking sparks between X-ray tube and the first shielding structure, be provided with the second ray mouth corresponding with first ray mouth on the insulating cylinder.

According to a further optimized technical scheme, the second shielding structure comprises a plumbum yellow end cover arranged at an opening of the first shielding structure, and the plumbum yellow end cover is used for shielding the axial ray leakage of the first shielding structure inside the first shielding structure;

one lead yellow end cover of the second shielding structure is an anode lead yellow end cover, and the other lead yellow end cover of the second shielding structure is a cathode lead yellow end cover.

According to the further optimized technical scheme, end insulation covers used for playing an insulation role are sleeved at two ends of the first shielding structure respectively, the end insulation covers are arranged between the first shielding structure and the lead yellow end covers, the end insulation cover close to the anode lead yellow end covers is an anode end insulation cover, and the end insulation cover close to the cathode lead yellow end covers is a cathode end insulation cover.

According to a further optimized technical scheme, a first oil passing gap is formed between the cathode end insulating cover and the cathode lead yellow end cover, and a first oil drain port communicated with the first oil passing gap is formed in the cathode end insulating cover; and/or a second oil passing gap is arranged between the anode end insulating cover and the anode lead yellow end cover, and a second oil drain port communicated with the second oil passing gap is arranged on the anode end insulating cover;

the X-ray tube holding cavity is suitable for being connected with an oil injection system, and oil injected by the oil injection system enters from the anode lead yellow end cover and flows in the X-ray tube holding cavity and is discharged from the first oil discharge port and/or the second oil discharge port.

According to a further optimized technical scheme, the cathode lead yellow end cover comprises a first cover plate and a first sleeve which are connected with each other; the first cover plate is covered on the periphery of the first shielding structure, and a high-voltage wire channel is formed in the first cover plate; the first sleeve stretches into the X-ray tube accommodating cavity, at least one first oil outlet is arranged on the first sleeve, one end of the first oil outlet is communicated with the X-ray tube accommodating cavity, and the other end of the first oil outlet is communicated with the first oil through gap;

the anode lead yellow end cover comprises a second cover plate and a second sleeve which are connected with each other; the second cover plate is covered on the periphery of the first shielding structure, and a bulb tube mounting opening is formed in the second cover plate; the second sleeve stretches into the inside of the X-ray tube containing cavity, an extending plate is arranged on the second cover plate, an oil guide port is arranged on the extending plate, an oil guide channel which is bent is arranged between the second cover plate and the extending plate, the oil guide channel is communicated with the X-ray tube containing cavity, and at least one second oil outlet communicated with the X-ray tube containing cavity is arranged on the second sleeve.

According to a further optimized technical scheme, spiral protrusions are arranged on the outer side walls of the anode end insulating cover and/or the cathode end insulating cover and/or the first sleeve and/or the second sleeve and used for increasing the creepage distance from high potential to ground potential.

Further optimizing technical scheme, the second shielding structure still includes:

at least one layer of lead yellow reinforcing structural member positioned at the periphery of the lead yellow end cover and used for reinforcing the shielding strength to X rays; the thickness and/or number of the lead-yellow reinforcing structure is determined based on the power and/or leakage radiation standard requirements of the X-ray tube.

Further optimizing the technical scheme, a through gap is formed between the lead yellow reinforcing structural member and the lead yellow end cover;

and/or

When the number of the lead yellow reinforcing structural members is more than two, a through gap is formed between every two adjacent lead yellow reinforcing structural members.

An X-ray tube assembly comprising:

the X-ray source shielding and protecting structure;

an X-ray tube positioned within the X-ray source shielding structure.

The technical scheme of the invention has the following advantages:

1. the X-ray source shielding protection structure provided by the invention is suitable for the fields of electric equipment for medical treatment, security inspection and industrial X-ray high-voltage generators. According to the invention, the first shielding structure and the second shielding structure are arranged in a split manner, the second shielding structure is plugged at the end part of the first shielding structure, and the second shielding structure is an insulator, so that the second shielding structure can be increased at the nearest position close to the high-voltage areas at the two ends of the X-ray tube, can shield the X-ray into the surrounding range of the X-ray tube, the most compact shielding structure is realized, the design size is reduced, the equipment weight is reduced, and the good X-ray shielding effect is achieved. The X-ray shielding structure is arranged at the nearest position close to the X-ray tube by adopting the wrapping type structural design, so that X-rays can be shielded at the source to the greatest extent, and the X-ray shielding effect which is required only by the X-ray shielding structure with larger size can be achieved after the X-rays are scattered to the surrounding distance.

2. The shielding and protecting structure of the X-ray source provided by the invention adopts the lead cylinder to be combined with the lead yellow structural member, the lead cylinder is used as the shielding structure at the position with the strongest ray dose of the X-ray tube, and the volume of the lead cylinder can be reduced to the greatest extent on the premise of needing lead pieces with the same lead equivalent, so that the design weight of the lead cylinder is reduced. The lead yellow shielding structures are used at the high-voltage sides of the two ends of the X-ray tube, so that the lead yellow shielding structures can be maximally close to the ray source to shield rays, the design size of the lead yellow shielding structures is reduced to the minimum, and meanwhile, the insulation problem is solved by utilizing the characteristics that the lead yellow shielding structures can insulate and shield X-rays. The invention adopts the X-ray source ray shielding combination formed by lead cylinders matched with lead yellow, and can also simultaneously have the functions of X-ray shielding protection, heat dissipation and insulation on the premise of realizing miniaturized design of products.

3. According to the shielding and protecting structure for the X-ray source, the oil inlet of the radiator is arranged on the anode lead yellow end cover, so that heat of the anode radiating ring of the X-ray tube can be timely taken away after oil is introduced, flows to the cathode lead yellow end cover and is discharged from the oil outlet of the lead cylinder, and the radiating effect inside the bulb assembly can be achieved at maximum efficiency.

4. According to the shielding protection structure of the X-ray source, the end insulation cover is sleeved at the end part of the lead cylinder, so that high-voltage wires of the cathode and anode of the X-ray tube can be arranged close to the end part of the lead cylinder, and the high-voltage wire opening can be arranged at the high-voltage side in the axial direction of the lead cylinder, thereby being beneficial to X-ray shielding.

5. According to the shielding protection structure for the X-ray source, provided by the invention, the lead-yellow reinforced structural member is provided with at least one layer, and the lead-yellow reinforced structural member adopts a sheet type structural design, so that the number of the lead-yellow reinforced structural member can be selected according to different shielding effect requirements, and the application range of the shielding protection structure is wider.

According to the invention, a certain gap is arranged between each lead-yellow reinforced structural member, so that air is prevented from being reserved at the position during vacuum oiling, namely, air between two lead-yellow reinforced structural members is easily discharged during oiling, the circulation of transformer oil is facilitated, the air content between each lead-yellow reinforced structural member is reduced, and the overall insulation performance of the device is improved.

6. According to the X-ray source shielding protection structure provided by the invention, the lead cylinder is insulated from the two ends of the cathode and the anode of the X-ray tube by the insulating cylinder, so that the insulating cylinder can avoid the phenomenon of sparking between the X-ray tube and the first shielding structure. And because the insulating cylinder is arranged between the lead cylinder and the X-ray tube, the diameter of the lead cylinder can be further reduced, and the volume and the weight of the lead cylinder are reduced.

7. The invention provides an X-ray source shielding protection structure, wherein a bent oil guide channel is arranged on an anode lead yellow end cover, one end of the oil guide channel is an oil guide port, and the other end of the oil guide channel is communicated with a containing cavity of an X-ray tube. Because the oil guide channel is arranged in a bent shape, the X-rays can be prevented from leaking out from the oil guide port to the greatest extent while the transformer oil can smoothly flow into the radiation tube assembly.

8. According to the X-ray source shielding protection structure provided by the invention, the outer side wall of the anode end insulating cover and/or the cathode end insulating cover and/or the first sleeve and/or the second sleeve is provided with the spiral bulge, and the spiral bulge is used for increasing the creepage distance between a high potential and a ground potential and has a certain ray shielding effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the whole structure of an X-ray source shielding structure according to the present invention;

FIG. 2 is a cross-sectional view of an X-ray source shielding structure provided by the present invention;

FIG. 3 is a schematic view of a cathode lead yellow end cap of the shielding and protecting structure for an X-ray source provided by the invention;

FIG. 4 is a schematic structural view of an insulation cylinder of the shielding and protecting structure of an X-ray source provided by the invention;

FIG. 5 is a schematic view of a structure of a lead-yellow reinforced structural member of the shielding and protecting structure of an X-ray source according to the present invention;

FIG. 6 is a schematic view of a cathode end insulating cover of the shielding structure of the X-ray source according to the present invention;

FIG. 7 is a schematic view of an anode end insulating cover of an X-ray source shielding structure according to the present invention;

FIG. 8 is a first view of an anode lead yellow end cap of the shielding structure of the X-ray source provided by the invention;

FIG. 9 is a second view of the anode lead yellow end cap of the shielding structure of the X-ray source provided by the invention;

fig. 10 is a schematic view of a third view angle of an anode lead yellow end cap of the shielding and protecting structure for an X-ray source according to the present invention.

Reference numerals:

1. an X-ray tube; 2. a lead cylinder; 3. an end insulating cover 31, a first oil drain port 32, a third climbing umbrella 33 and a second oil drain port; 4. the lead yellow end cover, 41, the cathode lead yellow end cover, 411, a first oil outlet, 412, a first climbing-increasing umbrella, 413, a high-voltage wire channel, 414, a first cover plate, 415, a first sleeve, 42, an anode lead yellow end cover, 421, a second oil outlet, 422, a second climbing-increasing umbrella, 423, a bulb mounting port, 424, a second cover plate, 425, a second sleeve, 426, an extension plate, 427, an oil inlet, 428 and an oil guide port; 5. a lead yellow reinforced structural member, 51, a lead yellow reinforced structural member main body, 52 and a supporting structure; 6. an anode high voltage lead; 7. ball tube fixing bolts; 8. an insulating cylinder 81, a positioning groove 82 and a second ray port; 9. an X-ray beam; 10. the cathode is a high voltage lead.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, the present invention illustrates the X-ray source shielding structure according to the present invention through the lead yellow end cap, which is only a preferred embodiment, and is not intended to limit the protection scope of the X-ray source shielding structure.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are inclusive and therefore specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof.

Although the terms first, second, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. In addition, in the description of the present invention, unless explicitly stated and limited otherwise, the terms "disposed" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.

For ease of description, spatially relative terms, such as "front," "back," "middle," "inner," "longitudinal," "lateral," "side," "vertical," "outer," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the mechanism in use or operation in addition to the orientation depicted in the figures. For example, if the mechanism in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both upper and lower orientations. The mechanism may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

The X-ray source is widely applied to the fields of medical treatment, security inspection, industry and the like, and the human body can have a certain influence on the life health of the human body after being irradiated by X-rays for a long time. The correct use of the X-ray source, avoiding the leakage or scattering of X-rays to a non-working area, is a basic requirement in the design of the X-ray source, and a common X-ray shielding method is to shield a lead structural member, and select lead structures with different thicknesses to wrap the shielding according to the intensity of different X-rays, so that the effect of ray leakage protection can be achieved, but the general X-ray source using the lead shielding has larger volume and heavy weight and cannot meet the requirements of a plurality of application occasions on small volume, light weight and convenient installation and carrying of the X-ray source.

In addition, the two ends of the X-ray tube are high-voltage areas, and the lead structure is larger because of the insulation problem between lead and high-voltage wires, which is one of the important reasons that the whole structure is large in design size and heavy in weight.

In order to solve the technical problems, the invention provides a novel X-ray source shielding protection structure and an X-ray tube assembly, wherein a shielding structure can be added at the nearest position of a high-voltage area near two ends of the X-ray tube to shield X-rays to a larger area in the range around the X-ray tube, so that the most compact shielding structure is realized to achieve the effect of shielding the X-rays, and meanwhile, the transformer insulating oil can smoothly flow around the X-ray tube to meet the requirement of high heat dissipation.

Specific embodiments of the present invention are described in detail below in connection with the X-ray source shielding structure of the first aspect of the present invention and the X-ray tube assembly of the second aspect of the present invention.

Example 1

It should be noted that, the X-ray source shielding structure of the first aspect of the present invention is only a preferred embodiment of the present invention, and the X-ray source shielding structure of the first aspect of the present invention may be used as the X-ray source shielding structure of the first aspect of the present invention, or other structures may be used, and for convenience of explanation, the following description will be made by using the X-ray source shielding structure of the first aspect of the present invention.

As shown in fig. 1 to 10, the present embodiment discloses an X-ray source shielding structure including a first shielding structure and a second shielding structure. The first shielding structure cover is arranged on the periphery of the X-ray tube 1, the first shielding structure is arranged in a cylinder shape with two open ends, a first ray port is arranged on the side part of the first shielding structure, and the first ray port is sealed through a plastic piece. The second shielding structure is provided with two, blocks in the both ends opening part of first shielding structure respectively to constitute X ray tube and hold the cavity with first shielding structure. The second shielding structures are insulators, wherein one second shielding structure is close to the cathode side of the X-ray tube 1 and the other second shielding structure is close to the anode side of the X-ray tube 1.

In this embodiment, the second shielding structure is an insulator, and the second shielding structure can be insulated, so that the second shielding structure can be added at the nearest position near the high-voltage areas at two ends of the X-ray tube, so as to shield the X-ray to the surrounding range of the X-ray tube, thereby realizing the most compact shielding structure and achieving a good X-ray shielding effect. The X-ray shielding structure is arranged at the nearest position close to the X-ray tube by adopting the wrapping type structural design, so that X-rays can be shielded at the source to the greatest extent, and the X-ray shielding effect which is required only by the X-ray shielding structure with larger size can be achieved after the X-rays are scattered to the surrounding distance.

More specifically, the first shielding structure is a lead shielding structure, and more specifically, the first shielding structure is a lead cylinder 2, and the atomic number of lead is high and the density is high, so that the X-ray can be effectively blocked. The second shielding structure is a lead yellow shielding structure, and lead yellow is also a mineral name commonly known as lead oxide, and has good electrical insulation property. The lead tube is combined with the lead yellow structural member, the lead tube is used as a shielding structure at the position with the strongest radiation dose of the X-ray tube, and the volume of the lead tube can be reduced to the greatest extent and the design weight of the lead tube can be reduced on the premise that lead pieces with the same lead equivalent are needed. The lead yellow shielding structures are used at the high-voltage sides of the two ends of the X-ray tube, so that the lead yellow shielding structures can be maximally close to the ray source to shield rays, the design size of the lead yellow shielding structures is reduced to the minimum, and meanwhile, the insulation problem is solved by utilizing the characteristics that the lead yellow shielding structures can insulate and shield X-rays. The embodiment adopts the X-ray source ray shielding combination formed by lead cylinders matched with lead yellow, and can also have the functions of X-ray shielding protection, heat dissipation and insulation on the premise of realizing miniaturized design of products.

In this embodiment, the X-ray tube 1 is a radiation generating device, that is, an X-ray generating source, and is a standard product, and a bulb tube of a corresponding model can be selected according to different application occasions. The X-ray tube 1 generates an X-ray beam 9, the intensity of the generated rays is strongest in the range of the X-ray beam 9, leakage rays scattered to the periphery are generated at other positions except the X-ray beam 9, and the lead drum 2 is used as a main lead shielding structure of the whole tube assembly, so that the leakage rays except the direction of the X-ray beam and the directions of a cathode sampler can be shielded into the lead drum.

Because the two ends of the cathode and anode of the X-ray tube are high-voltage electric potential, the lead cylinder is made of metal and is positioned at the ground potential, and the problem of ignition easily occurs between the X-ray tube and the lead cylinder. In some embodiments, an insulating cylinder 8 is mounted between the first shielding structure and the X-ray tube 1, the insulating cylinder 8 being an insulation between the X-ray tube and the lead cylinder. A plurality of positioning grooves 81 are arranged on the insulating cylinder 8. In this embodiment, the insulation tube 8 insulates the lead tube from both ends of the cathode and anode of the X-ray tube 1, so that the insulation tube 8 can avoid the sparking phenomenon between the X-ray tube 1 and the first shielding structure. In addition, the insulating cylinder is arranged between the lead cylinder and the X-ray tube, so that the diameter of the lead cylinder can be reduced, and the volume and the weight of the lead cylinder are reduced.

The insulating cylinder 8 is made of a polymer insulating material, and has excellent insulating properties.

The insulating tube 8 is provided with a second radiation port 82, and the second radiation port 82 corresponds to the first radiation port, so that the X-ray beam 9 generated by the X-ray tube 1 can be discharged.

In some embodiments, the second shielding structure includes a plumb yellow end cap 4 disposed at the opening of the first shielding structure, the plumb yellow end cap 4 for shielding the first shielding structure from axial leakage rays inside the first shielding structure. The yellow end cap 4 is made of yellow material, and the material can insulate and has a certain shielding effect on X-rays. One of the lead yellow end caps 4 of the second shielding structure is an anode lead yellow end cap 42, and the other lead yellow end cap 4 of the second shielding structure is a cathode lead yellow end cap 41.

In some embodiments, the X-ray tube is fixed to the anode lead yellow end cap 42 by the tube fixing bolt 7, and positioning of the X-ray tube 1 is achieved. The lead yellow end cap 4 can shield the lead drum from the leakage rays in the axial direction (two sides of the cathode and the anode) of the lead drum, so that the X-ray tube can be shielded from the leakage rays at other positions except the position of the X-ray beam 9.

In some embodiments, the thickness of the lead tube 2 is determined according to the power of the X-ray tube and the leakage radiation shielding standard, and the thickness of the lead yellow end cap 4 is matched with the leakage radiation shielding requirement, and in general, the greater the power of the X-ray tube or the higher the leakage radiation standard requirement, the thicker the required thickness of the shielding structural member such as the lead tube or the lead yellow is.

According to the direction of high-voltage wires on both sides of the cathode and anode, a corresponding high-voltage wire passage is required to be arranged in the lead-yellow reinforced structural member 5, and the high-voltage wires are led out to pass through the end part of the lead cylinder 2, so that the electric field intensity between the high-voltage wires and the lead cylinder is very high. To solve this technical problem, in some embodiments, the two ends of the first shielding structure are respectively sleeved with an end insulating cover 3 for playing an insulating role, and the end insulating cover 3 can play an insulating role between the high-voltage wire and the lead drum, so that the insulating problem is avoided. The end insulating cover near the anode lead end cover 42 is an anode end insulating cover, and the end insulating cover near the cathode lead end cover 41 is a cathode end insulating cover.

The end insulating cover 3 is made of a polymer insulating material, and has excellent insulating properties.

In some embodiments, a first oil-passing gap is arranged between the cathode end insulating cover and the cathode lead yellow end cover 41, a first oil drain port 31 communicated with the first oil-passing gap is arranged on the cathode end insulating cover, and oil in the containing cavity of the X-ray tube can be discharged through the first oil drain port 31; and/or a second oil-passing gap is arranged between the anode end insulating cover and the anode lead yellow end cover 42, a second oil drain port 33 communicated with the second oil-passing gap is arranged on the anode end insulating cover, and oil in the X-ray tube containing cavity can be discharged through the second oil drain port 33. The X-ray tube holding cavity is suitable for being connected with an oil injection system, and oil injected by the oil injection system enters from the anode lead yellow end cover 42, flows in the X-ray tube holding cavity and is discharged from the first oil discharge port and/or the second oil discharge port.

In the present embodiment, since the heat generation amount of the X-ray tube 1 is mainly concentrated on the anode side, the oil enters from the anode yellow cap 42 and flows to the cathode side, and the oil may be discharged from the first oil discharge port or the second oil discharge port at the time of discharging. The injected oil is transformer oil, the oil injection system cools the oil through the external radiator before injecting the oil, and the injected oil is in a flowing mode, so that heat on the anode radiator of the X-ray tube can be taken away, the problem of heat accumulation cannot occur, and the purpose of effective heat dissipation is achieved.

In some embodiments, cathode lead end cap 41 includes a first cover plate 414 and a first sleeve 415 coupled therebetween. The first cover plate 414 is arranged on the periphery of the first shielding structure, the first cover plate 414 is provided with a high-voltage lead channel 413, and the cathode high-voltage lead 10 of the X-ray tube can pass through the high-voltage lead channel 413. The first sleeve 415 stretches into the X-ray tube accommodating cavity, at least one first oil outlet 411 is arranged on the first sleeve 415, one end of the first oil outlet 411 is communicated with the X-ray tube accommodating cavity, and the other end of the first oil outlet 411 is communicated with an oil through gap. In this embodiment, the oil in the accommodating cavity of the X-ray tube may be introduced into the oil introducing gap through the first oil outlet 411, so as to drain the oil.

In some embodiments, anode lead end cap 42 includes a second cover plate 424 and a second sleeve 425 coupled therebetween. The second cover plate 424 is disposed around the first shielding structure, and the second cover plate 424 is provided with a bulb mounting opening 423 through which the bulb of the x-ray tube passes. The second sleeve 425 extends into the X-ray tube accommodating cavity, an extension plate 426 is arranged on the second cover plate 424, an oil guide port 428 is arranged on the extension plate 426, an oil inlet 427 communicated with the oil guide port 428 is arranged on the second cover plate 424, and at least one second oil outlet 421 communicated with the X-ray tube accommodating cavity is arranged on the second sleeve 425. In this embodiment, the oil may enter from the oil guide port 428, then enter into the cavity of the second cover plate 424, and then be discharged from the oil inlet 427 into the X-ray tube accommodating cavity.

In some embodiments, a bent oil guiding channel is disposed between the second cover plate 424 and the extension plate 426, and one end of the oil guiding channel is an oil guiding port 428, and the other end is an oil inlet 427. In the embodiment, the oil guide channel is bent, so that the X-rays can be prevented from leaking out of the oil guide port to the greatest extent while the transformer oil can smoothly flow into the radiation tube assembly.

The specific heat dissipation process of the X-ray source shielding protection structure to the X-ray tube is as follows: the transformer oil cooled by the external radiator enters from the anode lead yellow end cover, heat on the anode radiator of the X-ray tube can be taken away, namely, the transformer oil enters from the oil guide port arranged on the anode lead yellow end cover, heat on the anode radiator of the bulb tube is taken away, the transformer oil with heat flows to, and the oil passing gap between the cathode end insulating cover and the cathode lead yellow end cover 41 flows out, so that the heat dissipation requirement of the X-ray tube can be met on the premise of ensuring the effect of shielding the leaked rays.

In some embodiments, the anode end insulating cover and/or the cathode end insulating cover and/or the outer side wall of the first sleeve 415 and/or the second sleeve 425 are provided with spiral protrusions for increasing the creepage distance between the high potential to the ground potential while having a certain radiation shielding effect. The spiral protrusion is provided with a certain number, and the specific number of the spiral protrusion can be set according to actual conditions. The term "outer sidewall" as used herein refers to a sidewall relatively far from the X-ray tube.

More specifically, the spiral bulge is a climbing umbrella, a first climbing umbrella 412 is arranged on the first sleeve 415, a second climbing umbrella 422 is arranged on the second sleeve 425, and a third climbing umbrella 32 is arranged on the end insulating cover.

In some embodiments, the second shielding structure further comprises a lead-yellow reinforcement structure 5, the lead-yellow reinforcement structure 5 being provided with at least one layer, positioned at the periphery of the lead-yellow end cap 4, for enhancing the shielding strength against X-rays. The lead yellow reinforcing structural member 5 is designed in a sheet structure, and a proper number of lead yellow reinforcing structural members 5 can be selected according to the requirements of ray leakage shielding, so that the application range of the embodiment is wider. The thickness and/or number of lead reinforcing structures 5 is determined based on the power and/or leakage standard requirements of the X-ray tube. And a part of the lead yellow reinforced structural member 5 is provided with a through hole for accommodating the bulb fixing bolt 7, the cathode high-voltage lead 10, the anode high-voltage lead 6 and the like.

Because the X-ray source shielding protection structure belongs to a high-voltage product, the whole X-ray source shielding protection structure is positioned in the environment of transformer oil, and the product has certain requirements on the gas content of internal oil liquid and cannot have bubbles. If the extrusion between the two lead-yellow reinforced structural members 5 is tight, the oil is inconvenient to enter when the oil is injected, and the gas between the two lead-yellow reinforced structural members 5 is not easy to discharge, so that the insulation performance of the lead-yellow reinforced structural members 5 is affected.

To address this technical problem, in some embodiments, there is a through gap between the lead reinforcing structure 5 and the lead end cap 4. When the number of layers of the lead yellow reinforcing structural members 5 is more than two, a through gap is formed between two adjacent lead yellow reinforcing structural members 5. According to the embodiment, the lead yellow reinforcing structural members 5 with the same thickness are adopted, a proper number of lead yellow reinforcing structural members 5 are selected according to the required shielding effect, a certain gap is arranged between each lead yellow reinforcing structural member 5 in the embodiment so as to avoid air reserved at the place during vacuum oiling, namely, air between the two lead yellow reinforcing structural members 5 is easily discharged during oiling, transformer oil is conveniently circulated, the air content between the lead yellow reinforcing structural members 5 is reduced, and the overall insulation performance of the device is improved.

More specifically, the lead reinforcing structure 5 comprises a lead reinforcing structure body 51 and a support structure 52, the support structure 52 being arranged in the form of ring segments, the number of ring segments being as the case may be. Further, when the lead yellow reinforcing structural member 5 is in contact with the lead yellow end cap 4, a through gap exists between the lead yellow reinforcing structural member 5 and the lead yellow end cap 4, and when two lead yellow reinforcing structural members 5 are in contact, a through gap exists between two adjacent lead yellow reinforcing structural members 5.

Example 2

It should be noted that the X-ray tube assembly of the second aspect of the present invention is only a preferred embodiment of the present invention, and the X-ray tube assembly of the present invention may be used with the X-ray tube assembly of the first aspect of the present invention, or may be other structures, and for convenience of explanation, the description will be made below with respect to the X-ray tube assembly of the second aspect of the present invention.

The present embodiment discloses an X-ray tube assembly including the X-ray source shielding structure of embodiment 1 and the X-ray tube 1. The X-ray tube 1 is positioned inside an X-ray source shielding structure. The X-ray tube 1 is a ray generating device, namely an X-ray generating source, is a standard product, and can be selected into a bulb tube with a corresponding model according to different application occasions.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.

Claims (11)

1. An X-ray source shielding structure, comprising:

the X-ray tube comprises a first shielding structure, a second shielding structure and a first radiation source, wherein the first shielding structure is covered on the periphery of the X-ray tube (1), the first shielding structure is in a cylinder shape with two open ends, and a first radiation port is arranged on the side part of the first shielding structure;

the two second shielding structures are respectively plugged at openings at two ends of the first shielding structure and form an X-ray tube accommodating cavity with the first shielding structure; the second shielding structures are insulators, wherein one second shielding structure is close to the cathode side of the X-ray tube (1), and the other second shielding structure is close to the anode side of the X-ray tube (1).

2. The X-ray source shielding structure of claim 1, wherein the first shielding structure is a lead shielding structure and the second shielding structure is a lead yellow shielding structure.

3. The shielding and protecting structure of an X-ray source according to claim 2, wherein an insulating cylinder (8) is installed between the first shielding structure and the X-ray tube (1), the insulating cylinder (8) is used for avoiding a sparking phenomenon between the X-ray tube (1) and the first shielding structure, and a second ray port (82) corresponding to the first ray port is arranged on the insulating cylinder (8).

4. The X-ray source shielding structure according to claim 2, wherein the second shielding structure comprises a plumb yellow end cap (4) arranged at the opening of the first shielding structure, the plumb yellow end cap (4) being used for shielding the first shielding structure from axial leakage rays inside the first shielding structure;

the lead yellow end cover (4) of one second shielding structure is an anode lead yellow end cover (42), and the lead yellow end cover (4) of the other second shielding structure is a cathode lead yellow end cover (41).

5. The shielding and protecting structure for an X-ray source according to claim 4, wherein the two ends of the first shielding structure are respectively sleeved with an end insulating cover (3) for playing an insulating role, the end insulating cover (3) is arranged between the first shielding structure and the yellow lead end cover (4), the end insulating cover close to the anode yellow lead end cover (42) is an anode end insulating cover, and the end insulating cover close to the cathode yellow lead end cover (41) is a cathode end insulating cover.

6. The X-ray source shielding and protecting structure according to claim 5, wherein a first oil-passing gap is arranged between the cathode end insulating cover and the cathode yellow end cover (41), and a first oil drain port communicated with the first oil-passing gap is arranged on the cathode end insulating cover; and/or a second oil passing gap is arranged between the anode end insulating cover and the anode lead yellow end cover (42), and a second oil drain port communicated with the second oil passing gap is arranged on the anode end insulating cover;

the X-ray tube holding cavity is suitable for being connected with an oil injection system, and oil injected by the oil injection system enters from the anode lead yellow end cover (42) and flows in the X-ray tube holding cavity and is discharged from the first oil discharge port (31) and/or the second oil discharge port (33).

7. The X-ray source shielding structure according to claim 6, wherein the cathode lead end cap (41) comprises a first cover plate (414) and a first sleeve (415) connected therebetween; the first cover plate (414) is arranged on the periphery of the first shielding structure in a covering way, and a high-voltage wire channel (413) is formed in the first cover plate (414); the first sleeve (415) stretches into the X-ray tube accommodating cavity, at least one first oil outlet (411) is arranged on the first sleeve (415), one end of the first oil outlet (411) is communicated with the X-ray tube accommodating cavity, and the other end of the first oil outlet (411) is communicated with the first oil through gap;

the anode lead yellow end cover (42) comprises a second cover plate (424) and a second sleeve (425) which are connected with each other; the second cover plate (424) is arranged on the periphery of the first shielding structure in a covering way, and a bulb tube mounting opening (423) is formed in the second cover plate (424); the second sleeve (425) stretches into the inside of the X-ray tube containing cavity, an extension plate (426) is arranged on the second cover plate (424), an oil guide port (428) is arranged on the extension plate (426), an oil guide channel which is bent is arranged between the second cover plate (424) and the extension plate (426), the oil guide channel is communicated with the X-ray tube containing cavity, and at least one second oil outlet (421) which is communicated with the X-ray tube containing cavity is arranged on the second sleeve (425).

8. The X-ray source shielding protection structure according to claim 7, characterized in that the anode end insulating cover and/or cathode end insulating cover and/or first sleeve (415) and/or second sleeve (425) are provided with spiral protrusions on the outer side walls for increasing the creepage distance between the high potential to the ground potential.

9. The X-ray source shielding structure according to any one of claims 4-8, wherein the second shielding structure further comprises:

at least one layer of lead yellow reinforcing structural member (5) positioned at the periphery of the lead yellow end cover (4) for reinforcing the shielding strength to X rays; the thickness and/or number of the lead-yellow reinforcing structure (5) is determined based on the power and/or leakage-ray standard requirements of the X-ray tube.

10. The X-ray source shielding structure according to claim 9, characterized in that a through gap is provided between the lead-yellow reinforcing structure (5) and the lead-yellow end cap (4);

and/or

When the number of layers of the lead yellow reinforcing structural members (5) is more than two, a through gap is reserved between every two adjacent lead yellow reinforcing structural members (5).

11. An X-ray tube assembly, comprising:

the X-ray source shielding structure of any one of claims 1-10;

an X-ray tube (1) is positioned inside the X-ray source shielding and protecting structure.