Ray source device and detection equipment

Abstract

The utility model discloses a radiation source device and detection equipment, the radiation source device comprises a high voltage generator and a light source generator, the light source generator comprises a body and a power supply seat arranged at the end part of the body; the radiation source device is also provided with an insulating washer and an annular shielding part which are pressed and fixed between the high-voltage generator and the body, and the insulating washer is arranged around the power socket; and the annular shielding part is arranged around the insulating washer so as to prevent the insulating washer from being exposed outwards after being installed and fixed. According to the utility model, the insulating washer is pressed and fixed between the high-voltage generator and the light source generator, so that the power supply seat enclosed by the insulating washer can be isolated from the outside, and the power supply seat has better sealing performance; and meanwhile, after the insulating washer is pressed and fixed, a layer of annular shielding part is arranged outside the insulating washer, so that the insulating washer is prevented from being exposed outwards, and the problem of high-voltage creepage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ray detection, in particular to a ray source device and a detection device. Background Art

[0002] As a kind of ray source, the X-ray source has a very wide range of application fields, mainly including industrial non-destructive testing, nuclear waste, security inspection, food industry, electronic component detection, light industry, dental CT, medical and other industries. From the perspective of market demand, the development trend and prospect are relatively optimistic. However, the market competition is very fierce and has become white-hot. The market not only requires stable and reliable quality, but also higher performance requirements.

[0003] At present, the conventional 160KV ray source is generally adopted in the market. However, the output voltage of 160KV is relatively low and cannot penetrate thicker or denser metals. Although increasing the output voltage can improve the penetration of the ray source, high-voltage creepage problems are likely to occur after the voltage is increased. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a ray source device to solve the deficiencies in the prior art. After the insulating washer is tightly pressed and fixed, a ring-shaped shielding part is arranged outside the insulating washer, which avoids the outward exposure of the insulating washer and reduces the occurrence of high-voltage creepage problems.

[0005] The ray source device provided by the utility model includes a high-voltage generator and a light source generator. The light source generator includes a body and a power supply base arranged at the end of the body;

[0006] The ray source device also has an insulating washer and a ring-shaped shielding part that are tightly pressed and fixed between the high-voltage generator and the body. The insulating washer is arranged around the power supply base; the ring-shaped shielding part is arranged around the insulating washer to prevent the insulating washer from being exposed outward after being installed and fixed.

[0007] Further, the ring-shaped shielding part is arranged on the body;

[0008] A docking structure is arranged on the high-voltage generator and is arranged in cooperation with the body. The insulating washer is tightly pressed between the docking structure and the body; an avoidance groove adapted to the ring-shaped shielding part is arranged on the docking structure;

[0009] After the insulating washer is tightly pressed and fixed, the ring-shaped shielding part is located in the avoidance groove.

[0010] Further, a washer positioning groove for positioning the insulating washer is formed by the ring-shaped shielding part and the end of the body;

[0011] After the insulating washer is positioned, the insulating washer does not protrude axially along the body beyond the washer positioning groove.

[0012] Furthermore, the annular shielding portion is disposed on the body and is relatively disposed near the outer wall of the body.

[0013] Furthermore, the power socket includes a terminal support platform and a wiring terminal disposed on the terminal support platform; the insulating washer is sleeved outside the terminal support platform; the insulating washer is positioned between the support platform and the annular shielding portion;

[0014] The insulating washer is integrally annular and has an inner ring wall and an outer ring wall. The outer ring wall is attached to the inner side of the annular shielding portion, and the inner ring wall is attached to the outer wall of the terminal support platform.

[0015] Furthermore, the body includes a ceramic tube and a metal housing covering the ceramic tube. Part of the metal housing extends axially beyond the end of the ceramic tube to form the annular shielding portion.

[0016] Furthermore, a receiving groove adapted to the body is formed on one side of the docking structure facing the body, and the body is positioned in the receiving groove;

[0017] The insulating washer is pressed and positioned at the bottom of the receiving groove; the avoidance groove is recessed from the bottom of the receiving groove in a direction away from the opening of the receiving groove.

[0018] Furthermore, the high-voltage generator has a generator housing, and a housing mounting hole is formed on one side of the generator housing facing the body;

[0019] The docking structure includes an insulating body disposed in the generator housing and an annular mounting portion disposed on the insulating body. The receiving groove is disposed on the insulating body, and the annular mounting portion is located at the edge of the receiving groove;

[0020] The annular mounting portion is fixed outside the generator housing, and the annular mounting portion is fixed at the edge of the housing mounting hole.

[0021] Furthermore, the insulating body includes a receiving portion, a transition portion, and an extending portion. The receiving groove is disposed on the receiving portion. The transition portion extends in a direction away from the receiving groove and has a transition portion through hole communicating with the receiving groove. The transition portion through hole has an inlet disposed at the bottom of the receiving groove;

[0022] The extending direction of the extending portion intersects with the extending direction of the transition portion.

[0023] Further, the generator housing is integrally in a cuboid structure and has a length direction and a width direction. The transition part extends integrally along the width direction of the generator housing, and the extension part extends integrally along the length direction of the generator housing;

[0024] The extending direction of the extension part is perpendicular to the extending direction of the transition part.

[0025] Further, the outer wall of the extension part is curved;

[0026] The extension part is integrally in a corrugated shape.

[0027] Further, the receiving part, the transition part and the extension part are integrally formed. The annular mounting part includes a flange ring integrally formed on the receiving part. A plurality of mounting holes are arranged in an annular shape on the annular mounting part, and the annular mounting part is arranged on the side of the receiving part away from the transition part;

[0028] The insulating body is made of lead yellow; the outer diameter dimension of the transition part gradually decreases as it is farther away from the accommodating groove; the outer diameter dimension of the extension part also gradually shortens as it is farther away from the transition part, and an extension part perforation communicating with the transition part perforation is arranged on the extension part.

[0029] Further, the ray source device further includes a mounting flange fixed on the generator housing, and the mounting flange presses and fixes the annular mounting part on the generator housing.

[0030] Further, the body includes a reaction cavity arranged in the ceramic tube, a tungsten target arranged in the reaction cavity, and a ray outlet arranged on the ceramic tube; the ray outlet is integrally formed with the ceramic tube;

[0031] The power supply base is arranged on the ceramic tube and extends into the reaction cavity, and the power supply base is hermetically arranged with the ceramic tube;

[0032] A plurality of wiring terminals are arranged on the power supply base;

[0033] There are three wiring terminals. Each wiring terminal is provided with a conductive tube, and each conductive tube is provided with a conductive spring;

[0034] The ray source device further has a radiation cover sleeved outside the light source generator, and the radiation cover abuts against the mounting flange.

[0035] Further, the high-voltage generator includes a positive high-voltage generator and a negative high-voltage generator which are oppositely arranged. The body is pressed between the positive high-voltage generator and the negative high-voltage generator. An insulating washer is tightly arranged between the body and the positive high-voltage generator, and an insulating washer is also tightly arranged between the body and the negative high-voltage generator.

[0036] Another embodiment of the present invention also discloses a detection device, which includes a frame body and the ray source device as described above. The ray source device is arranged on the frame body.

[0037] Compared with the prior art, in the present invention, the insulating washer is tightly fixed between the high-voltage generator and the light source generator, which can isolate the power socket surrounded by the insulating washer from the outside, making the power socket have better sealing performance. At the same time, after the insulating washer is tightly fixed, a ring-shaped shielding part is arranged outside the insulating washer to avoid the exposure of the insulating washer, further reducing the occurrence of high-voltage creepage problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is the first structural schematic diagram of the ray source device disclosed in the embodiment of the present invention;

[0039] Figure 2 is the second structural schematic diagram of the ray source device disclosed in the embodiment of the present invention;

[0040] Figure 3 is the front view of the ray source device disclosed in the embodiment of the present invention;

[0041] Figure 4 is the installation structural schematic diagram of the body and the docking structure in the ray source device disclosed in the embodiment of the present invention;

[0042] Figure 5 is the third structural schematic diagram of the ray source device disclosed in the embodiment of the present invention;

[0043] Figure 6 is the first structural schematic diagram of the base in the ray source device disclosed in the embodiment of the present invention;

[0044] Figure 7 is the structural schematic diagram of the light source generator in the ray source device disclosed in the embodiment of the present invention;

[0045] Figure 8 is the installation structural schematic diagram of the light source generator and the high-voltage generator in the ray source device disclosed in the embodiment of the present invention;

[0046] Figure 9 is the exploded view of the ray source device disclosed in the embodiment of the present invention;

[0047] Figure 10 It is a structural schematic diagram of a docking structure in a ray source device disclosed in an embodiment of the utility model;

[0048] Figure 11 It is a structural schematic diagram of another docking structure in the ray source device disclosed in the embodiment of the utility model;

[0049] Figure 12 It is a top view of the docking structure in the ray source device disclosed in the embodiment of the utility model;

[0050] Figure 13 yes Figure 12 Cross-sectional view in the BB direction;

[0051] Figure 14 It is a schematic diagram of the overall first structure of the ray source device disclosed in the embodiment of the utility model after the control unit is installed and fixed;

[0052] Figure 15 It is a second overall structural schematic diagram of the ray source device disclosed in the embodiment of the utility model after the control unit is installed and fixed;

[0053] Description of reference numerals: 1-base, 10-gap space, 11-handle, 12-abutment positioning groove, 13-waist-shaped hole, 14-positive electrode positioning groove,

[0054] 2-high voltage generator, 200-housing mounting hole, 21-positive high voltage generator, 211-positive plug connector, 212-positive generator housing, 22-negative high voltage generator, 221-negative plug connector, 222-negative generator housing, 23-docking structure, 230-accommodating groove, 231-insulating body, 2311-receiving part, 2312-transition part, 2313-extension part, 232-annular mounting part, 233-avoidance groove, 24-mounting flange, 25-positioning bolt,

[0055] 3-light source generator, 31-main body, 311-ceramic tube, 312-ray outlet, 32-power socket, 321-connecting terminal, 3211-conductive tube, 3212-conductive spring, 322-terminal support platform, 33-gasket positioning groove, 34-metal cover, 4-cooling system, 41-switch, 5-transformer, 51-transformer box, 6-control unit, 61-control unit housing, 611-mounting plate, 6111-lateral support part, 612-shell cover, 7-insulating gasket, 8-radiation cover, 9-annular shielding part, 101-abutment positioning part, 1011-positioning support plate, 1012-abutment part. DETAILED DESCRIPTION

[0056] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0057] Embodiment of the present utility model: Disclosed is a ray source device, which is used to generate X-rays. The ray source device can be used in security inspection equipment to detect items or in non-destructive testing equipment to detect product defects, such as crack bubbles and other defect problems generated on products.

[0058] As Figures 1-9 shown, the ray source device of this embodiment includes a base 1 or a frame body, and a high-voltage generator 2 and a light source generator 3 arranged on the base 1 or the frame body. The light source generator 3 includes a body 31 and a power supply base 32 arranged at the end of the body 31;

[0059] The ray source device also has an insulating washer 7 and an annular shielding part 9 tightly fixed between the high-voltage generator 2 and the body 31. The insulating washer 7 is arranged around the power supply base 32; the annular shielding part 9 is arranged around the insulating washer 7 to prevent the insulating washer 7 from being exposed outward after installation and fixation. The annular shielding part 9 surrounding the insulating washer 7 forms a covering on the side of the insulating washer 7 to reduce the risk of high-voltage creepage.

[0060] In this embodiment, pressing and fixing the insulating washer 7 between the high-voltage generator 2 and the light source generator 3 can isolate the power supply base 32 surrounded by the insulating washer 7 from the outside, so that the power supply base 32 has better sealing performance, and can reduce the occurrence of high-voltage creepage problems when electrically connected to the high-voltage generator. At the same time, when the insulating washer 7 is pressed and fixed, a layer of annular shielding part 9 is arranged outside the insulating washer 7 to avoid the outward exposure of the insulating washer 7, further reducing the occurrence of high-voltage creepage problems.

[0061] As Figures 1-9 shown, the ray source device of this embodiment includes a pair of high-voltage generators 2 arranged on the base 1 and opposite to each other, and the light source generator 3 is arranged between the pair of high-voltage generators 2;

[0062] The body 31 of the light source generator 3 is pressed between the pair of high-voltage generators 2; the body 31 is integrally columnar and has two opposite ends in the axial direction, and a pair of power supply bases 32 are respectively arranged at the two ends.

[0063] A pair of the high-voltage generators 2 are arranged along the width direction of the base 1 and form a gap space 10 between them.

[0064] A pair of high-voltage generators 2 are respectively a positive high-voltage generator 21 and a negative high-voltage generator 22. An insulating washer 7 is provided between the body 31 and the positive high-voltage generator 21, and an insulating washer 7 is also provided between the body 31 and the negative high-voltage generator 22.

[0065] In the ray source device disclosed in this embodiment, under the combined action of the positive high-voltage generator 21 and the negative high-voltage generator 22, the light source generator 3 is located in a larger voltage field, so as to better accelerate the electrons in the light source generator 3, making the generated X-rays have stronger penetrability and enabling the testing of thicker objects. The setting of the above structure enables the ray source device to meet the output of high voltage and high current, so that the X-rays formed by the light source generator 3 have stronger penetrability and the generated images after detection have higher resolution.

[0066] The ray source device also has a transformer component 5. The transformer component 5 is used to receive an external power supply and convert the voltage generated by the external power supply into a voltage that can be used by the positive high-voltage generator 21 and the negative high-voltage generator 22. Specifically, in this embodiment, the transformer component 5 is arranged in the gap space 10.

[0067] In this embodiment, the external power supply provides a voltage of 220V. After being converted by the transformer component 5, the 220V voltage is converted into a 160V voltage for the positive high-voltage generator 21 and a 160V voltage for the negative high-voltage generator 22, so as to form a voltage difference of 320V at both ends of the light source generator 3 to better accelerate the electrons and make the X-rays generated after hitting the tungsten target have stronger penetrability.

[0068] Compared with the control method using single-pole voltage in the prior art, although the method using bipolar high voltage improves the penetrability of the generated X-rays, the addition of the positive high voltage easily causes the problem of high-voltage creepage, resulting in unstable operation of the equipment. In this embodiment, a layer of annular shielding part 9 is arranged outside the insulating washer 7, which can effectively reduce the occurrence of high-voltage creepage problems.

[0069] To facilitate the setting of the annular shielding part 9, in this embodiment, the annular shielding part 9 is arranged on the body 31. The high-voltage generator 2 is provided with a docking structure 23 that cooperates with the body 31. The insulating washer 7 is pressed between the docking structure 23 and the body 31; a relief groove 233 adapted to the annular shielding part 9 is arranged on the docking structure 23;

[0070] After the insulating washer 7 is pressed and fixed, the annular shielding part 9 is located in the relief groove 233.

[0071] The provision of the avoidance groove 233 enables the annular shielding portion 9 covering the insulating washer 7 not to affect the pressing effect of the insulating washer 7 between the body 31 and the docking structure 23, so that the insulating washer 7 can be more tightly pressed between the two. It can be understood that in order to better achieve a tight press fit, the insulating washer 7 is made of a deformable material, and the insulating washer 7 has a certain degree of deformation compression during the pressing process.

[0072] In a specific embodiment, the annular shielding portion 9 is made of a metal material, such as stainless steel. Since the annular shielding portion 9 is a relatively rigid material, when the body 31 is being pressed, if the annular shielding portion 9 is subjected to force extrusion, it is not only easy to cause deformation or rupture of the annular shielding portion 9, but also affects the pressing effect of the insulating washer 7. The avoidance groove 233 provided on the docking structure 23 can effectively avoid the occurrence of the above problems.

[0073] The annular shielding portion 9 and the end of the body 31 enclose a washer positioning groove 33 for positioning the insulating washer 7; in this embodiment, the body 31 is an overall cylindrical ceramic tube, and the annular shielding portion 9 is provided on the body 31 and encloses a washer positioning groove 33 for positioning the insulating washer 7 with the end of the body 31. The insulating washer 7 is first positioned in the washer positioning groove 33 before being pressed, so that it will not move or deviate during the pressing process.

[0074] After the insulating washer 7 is positioned, the insulating washer 7 does not protrude out of the washer positioning groove 33 along the axial direction of the body 31; in this embodiment, the insulating washer 7 is approximately flush with the end of the annular shielding portion 9 along the axial direction of the body 31. If the insulating washer 7 extends out of the washer positioning groove 33, it is easy to have extrusion deformation outside the washer positioning groove 33 during the extrusion process, causing part of the insulating washer 7 to be pressed between the annular shielding portion and the docking structure 23, which not only damages the insulating washer 7, but also affects the pressing effect.

[0075] The annular shielding portion 9 is relatively arranged close to the outer wall of the body 31. The closer the annular shielding portion 9 is to the outer wall of the body 31, the larger the radius dimension of the washer positioning groove 33 formed by the annular shielding portion 9 and the end of the body 31, and correspondingly, the larger the cross-sectional dimension of the insulating washer 7 that can be positioned.

[0076] In this embodiment, the insulating washer 7 is integrally annular and has an inner ring wall and an outer ring wall. The larger the radius dimension of the washer positioning groove 33, the thicker the distance between the outer ring wall and the inner ring wall of the insulating washer 7. The thicker the above thickness of the insulating washer 7, the better it can increase the creepage distance, thereby avoiding high-voltage leakage.

[0077] The power socket 32 includes a terminal support table 322 and a wiring terminal 321 disposed on the terminal support table 322; an insulating washer 7 is sleeved outside the terminal support table 322; the insulating washer 7 is positioned between the terminal support table 322 and the annular shielding portion 9;

[0078] The insulating washer 7 is integrally annular and has an inner ring wall and an outer ring wall. The outer ring wall is attached to the inner side of the annular shielding portion 9, and the inner ring wall is attached to the outer wall of the terminal support table 322.

[0079] It should be noted that a relatively large pressing force is required during the process of pressing the insulating washer 7. The relatively large pressing force is likely to cause the position of the insulating washer 7 to shift. If some of the insulating washers 7 deviate during the pressing process, it will result in the scrapping of the product. In this embodiment, the insulating washer 7 is sleeved outside the terminal support table 322. In fact, the terminal support table 322 also plays a role in positioning the insulating washer. In this way, the annular insulating washer 7 is simultaneously positioned and supported by the terminal support table 322 and the annular shielding portion 9, so that it can be more stable during the pressing process and will not shift.

[0080] In this embodiment, the main body includes a ceramic tube 311 and a metal cover 34 sleeved outside the ceramic tube 311. Part of the metal cover 34 extends along the axial direction of the ceramic tube 311 beyond the end of the ceramic tube 311 to form the annular shielding portion 9. In this embodiment, the annular shielding portion 9 and the metal cover 34 sleeved outside the ceramic tube 311 are integrally formed. As a part of the metal cover 34, the annular shielding portion 9 can be more conveniently provided. In this embodiment, the power socket 32 is disposed at the end of the ceramic tube 311.

[0081] Using a ceramic tube enables the light source generator to have better stability in a high-voltage environment. Setting a metal cover 34 outside the ceramic tube 311 can effectively protect the ceramic tube 311. In this embodiment, the annular shielding portion 9 is disposed on the metal cover 34 or integrally formed with the metal cover 34. Through a delicate design, the setting of the annular shielding portion 9 is facilitated, making the structure more concise. The annular shielding portion 9 is disposed on the outer wall of the ceramic tube 311, and can also make the annular shielding portion 9 have a larger size under a ceramic tube with a certain outer diameter size, so as to be able to position an insulating washer 7 with a larger size.

[0082] The ceramic tube 311 has a reaction chamber. The main body 31 further has a tungsten target (not shown in the figure) disposed in the reaction chamber and a ray outlet 312 disposed on the ceramic tube 311; the ray outlet 312 is integrally formed with the ceramic tube 311. The main body 31 made of ceramic material has better insulation effect under high voltage compared with glass material. Of course, in other embodiments, glass material can also be used as the main body 31.

[0083] The power socket 32 is disposed on the ceramic tube 311 and extends into the reaction chamber. Since a vacuum environment needs to be maintained in the reaction chamber, the power socket 32 and the ceramic tube 311 need to be hermetically sealed.

[0084] It should be noted that in the above embodiments, the annular shielding portion 9 is disposed on the main body 31. It can be understood that in other embodiments, the annular shielding portion 9 can also be disposed on the high-voltage generator 2. Specifically, the annular shielding portion 9 is disposed on the docking structure 23. Correspondingly, a receiving portion adapted to the annular shielding portion 9 is provided on the main body 31. The annular shielding portion 9 only needs to hermetically cover the compressed insulating washer 7, and no further limitation is imposed on the specific structure.

[0085] A receiving groove 230 adapted to the main body 31 is formed on one side of the docking structure 23 facing the main body 31. After installation, the main body 31 is positioned in the receiving groove 230.

[0086] The insulating washer 7 is then compressed and positioned at the bottom of the receiving groove 230. The avoidance groove 233 is recessed from the bottom of the receiving groove 230 in a direction away from the opening of the receiving groove 230.

[0087] In this embodiment, when the main body 31 is installed and fixed, the insulating washer 7 pressed between the main body 31 and the positive high-voltage generator 21 is positioned in the receiving groove 230 of the docking structure 23. Such a structure can enable the docking structure 23 to wrap and cover the end of the main body 31 to a certain extent, thereby better achieving the sealing and shielding effect, reducing the occurrence of high-voltage creepage problems, and at the same time better realizing the positioning of the insulating washer 7, avoiding the offset of the insulating washer 7 during the pressing process, and enabling the device to operate more stably.

[0088] The material of the docking structure 23 is lead yellow, which has a good shielding effect and can well reduce radiation. At the same time, the docking structure 23 made of lead yellow has insulation properties, and the docking structure 23 as an insulator can further reduce the occurrence of high-voltage creepage problems.

[0089] In a specific embodiment, as Figure 8 shown, the high-voltage generator 2 has a generator housing, and a housing mounting hole 200 is formed on one side of the generator housing facing the main body 31.

[0090] A cavity is provided in the generator housing, and the cavity can be exposed outward through the housing mounting hole 200. After the docking structure 23 is installed and fixed, at least a part of the docking structure 23 is located in the cavity.

[0091] As Figures 10-13As shown, the docking structure 23 includes an insulating body 231 disposed within the generator housing and an annular mounting portion 232 disposed on the insulating body 231. The accommodating groove 230 is disposed on the insulating body 231, and the annular mounting portion 232 is located at the edge of the accommodating groove 230; the insulating body 231 is disposed in the cavity of the corresponding generator housing.

[0092] The annular mounting portion 232 is fixed outside the generator housing, and the annular mounting portion 232 is fixed at the edge of the housing mounting hole 200.

[0093] By providing the annular mounting portion 232, it is convenient to install and fix the docking structure 23 on the generator housing.

[0094] The insulating body 231 includes a receiving portion 2311, a transition portion 2312, and an extending portion 2313. The accommodating groove 230 is disposed on the receiving portion 2311. The transition portion 2312 extends in a direction away from the accommodating groove 230 and has a transition portion through-hole communicating with the accommodating groove 230. The transition portion through-hole has an inlet disposed at the bottom of the accommodating groove 230.

[0095] The extending direction of the extending portion 2313 intersects with the extending direction of the transition portion 2312; in this embodiment, the overall extending direction of the extending portion 2313 is perpendicular to the overall extending direction of the transition portion 2312.

[0096] Specifically, the generator housing is integrally in a cuboid structure and has a length direction and a width direction. The transition portion 2312 extends integrally along the width direction of the generator housing, and the extending portion 2313 extends integrally along the length direction of the generator housing. The extending direction of the extending portion 2313 is perpendicular to the extending direction of the transition portion 2312.

[0097] The longer the length of the insulating body 231, the more effectively the problem of high-voltage creepage can be avoided. In this embodiment, the insulating body 231 is arranged to extend in two directions, that is, the transition portion 2312 extending along the width direction and the extending portion 2313 extending along the length direction. Such a structural arrangement can prevent the insulating body 231 from extending in one direction, so that the insulating body 231 does not occupy too much space in this direction, making the entire device smaller in volume.

[0098] In this embodiment, the sum of the length of the insulating body 231 extending along the width direction and the length extending along the length direction is not less than 5 cm. That is, the sum of the length of the extending portion 2313 along the extending direction and the length of the transition portion 2312 along the extending direction is not less than 5 cm, thereby ensuring that the insulating body 231 has a sufficient length for extension.

[0099] As it is away from the accommodation groove 230, the outer diameter dimension of the transition portion 2312 gradually decreases; the transition portion 2312 is integrally conical. Such a structural setting can minimize the size of the transition portion 2312 on the basis of ensuring a stable connection with the insulating body 231, saving space and reducing the use of materials at the same time.

[0100] In this embodiment, the receiving portion 2311, the transition portion 2312 and the extending portion 2313 are integrally formed. The annular mounting portion 232 includes a flange ring integrally formed on the receiving portion 2311. A plurality of annularly arranged mounting holes are provided on the annular mounting portion 232. The annular mounting portion 232 is arranged on the side of the receiving portion 2311 away from the transition portion 2312, so that the insulating body 231 is exposed as little as possible.

[0101] As it is away from the transition portion 2312, the outer diameter dimension of the extending portion 2313 also gradually shortens. An extending portion perforation communicating with the transition portion perforation is provided on the extending portion 2313.

[0102] The outer wall of the extending portion 2313 is curved; that is, the wall arranged in a curve encloses the extending portion 2313. Arranging the extending portion 2313 in a curve can increase the degree of bending of the wall of the extending portion 2313 in the extending direction, so as to increase the creepage distance when the high-voltage electricity climbs outward along the extending portion 2313, and further reduce the risk caused by high-voltage creepage.

[0103] In this embodiment, as Figure 11 shown, the extending portion 2313 is integrally in a corrugated shape. The corrugated extending portion 2313 has a longer creepage distance. It can be understood that in other embodiments, the transition portion 2312 can also be arranged in a corrugated shape.

[0104] The ray source device further includes a mounting flange 24 fixed on the generator housing. The mounting flange 24 presses and fixes the annular mounting portion 232 on the generator housing.

[0105] In this embodiment, the ray source device further has a base 1, a high-voltage generator 2 and a light source generator 3 are all arranged on the base 1. The high-voltage generator 2, the light source generator 3 and the base 1 are taken as a module as a whole, which is convenient for taking and placing, and also makes the integration degree of the ray source device higher.

[0106] The high-voltage generator 2 is provided with a pair of positive high-voltage generator 21 and negative high-voltage generator 22 respectively, and the light source generator 3 is pressed between the positive high-voltage generator 21 and the negative high-voltage generator 22. The pair of high-voltage generators 2 are arranged along the width direction of the base 1 and form a gap space 10 therebetween. The ray source device further has a cooling system 4 and / or a transformer component 5 arranged in the gap space 10. The cooling system 4 is used to cool down the ray source device.

[0107] For a more integrated setting, the cooling system 4 and the transformer component 5 can be arranged simultaneously in the gap space 10 between the pair of high-voltage generators 2, or only one of the above two can be arranged. Of course, other devices such as a control unit 6 can also be arranged between the two.

[0108] In this embodiment, the positive high-voltage generator 21 and the negative high-voltage generator 22 are integrally arranged on the base 1, and the cooling system 4 and the transformer component 5 arranged in the gap space 10 formed therebetween can make better use of the space between the two high-voltage generators 2, making the ray source device have a smaller volume, higher integration degree of the ray source device, and making the ray source device more compact.

[0109] On the side of the positive high-voltage generator 21 facing the negative high-voltage generator 22, a positive plug 211 is provided, and on the side of the negative high-voltage generator 22 facing the positive high-voltage generator 21, a negative plug 221 is provided.

[0110] Setting the positive plug 211 on the side of the positive high-voltage generator 21 facing the negative high-voltage generator 22 actually makes the positive plug 211 also located in the gap space 10. Such a structural setting can make better use of the gap space 10. Similarly, setting the negative plug 221 on the side of the negative high-voltage generator 22 facing the positive high-voltage generator 21 can also make better use of the gap space 10.

[0111] It should be noted that in other embodiments, the positive plug 211 and the negative plug 221 can also be arranged at other positions according to actual needs.

[0112] In this embodiment, the transformer component 5 includes a transformer box body 51 fixed on at least one of the positive high-voltage generator and the negative high-voltage generator, and a positive cable and a negative cable (not shown in the figure) arranged in the transformer box body 51. It can be understood that a transformer for voltage transformation control is arranged in the transformer box body 51, and the positive cable and the negative cable are respectively electrically connected to the transformer.

[0113] In this embodiment, in order to better achieve control, such as Figures 14-15As shown in the figure, the ray source device further includes a control unit 6. After voltage transformation by the transformer component 5, it is connected to the positive high-voltage generator 21 and the negative high-voltage generator 22 through the control unit 6. The positive cable and the negative cable are electrically connected to the control unit 6 respectively, and the control unit 6 is further connected to the positive plug 211 and the negative plug 221 through cables respectively.

[0114] Both the positive high-voltage generator 21 and the negative high-voltage generator 22 have generator casings. The transformer box body 51 is fixed between the two generator casings, and the upper surface of the transformer box body 51 is in the same plane as the upper surfaces of the generator casings.

[0115] It can be understood that in other embodiments, the transformer box body 51 can also be fixed on the upper surfaces of the two transformer box bodies at the same time, and the transformer box body 51 straddles the gap space 10.

[0116] The positive high-voltage generator 21 includes a positive generator casing 212, the negative high-voltage generator 22 has a negative generator casing 222, the transformer box body 51 is fixed between the positive generator casing 212 and the negative generator casing 222, and the upper surface of the transformer box body 51 is flush with the upper surfaces of the positive generator casing 212 and the negative generator casing 222 at the same time.

[0117] The cooling system 4 has an exchanger 41 disposed in the gap space 10. Arranging the exchanger 41 in the gap space 10 can effectively reduce the occupation of the space of the ray source device, making the structure of the entire ray source device more compact.

[0118] As Figures 14-15 As shown in the figure, the ray source device further includes a control unit 6. The control unit 6 is electrically connected to the transformer component 5. The control unit 6 has a control unit casing 61. The control unit casing 61 is respectively connected and fixed to the pair of high-voltage generators 2, and the control unit casing 61 is fixed on the upper surfaces of the pair of high-voltage generators 2.

[0119] The control unit casing 61 is respectively connected and fixed to the negative generator casing 222 and the positive generator casing 212. The above arrangement of the control unit casing 61 also serves to connect and fix the two high-voltage generators, enabling the negative generator casing 222 and the positive generator casing 212 to be fixed on the base 1 more stably, so that the light source generator 3 is pressed and fixed between the positive high-voltage generator 21 and the negative high-voltage generator 22 more stably.

[0120] The control unit housing 61 is fixedly arranged at a position opposite to the body 31; the control unit housing 61 is fixed on the upper positive side of the body 31; the body 31 is pressed between the positive high-voltage generator 21 and the negative high-voltage generator 22. Therefore, a greater pressing effect is required for the position of the body 31. Fixing the control unit housing 61 at a position opposite to the body 31 can better achieve the above effects.

[0121] In this embodiment, as Figure 14 and 15 shown, the control unit housing 61 includes a mounting plate 611 and a housing cover 612 arranged on the mounting plate 611. A housing space is formed between the mounting plate 611 and the housing cover 612, and the electronic control devices of the control unit are arranged in the housing space.

[0122] The mounting plate 611 is simultaneously connected and fixed to the positive high-voltage generator 21 and the negative high-voltage generator 22. The mounting plate 611 is integrally plate-shaped and has a certain thickness. Such a structural setting enables the mounting plate 611 to better play the role of pressing the positive high-voltage generator 21 and the negative high-voltage generator 22. The housing cover 612 is relatively thinner than the mounting plate 611. The housing cover 612 covers the mounting plate 611 to form a covering and protection for the electronic control devices of the control unit.

[0123] In this embodiment, as Figure 7 shown, a plurality of wiring terminals 321 are provided on the power supply base 32; there are three wiring terminals. The wiring terminal 321 includes a conductive tube 3211 and a conductive spring 3212 arranged on the conductive tube 3211. In this embodiment, both the conductive tube 3211 and the conductive spring 3212 are arranged on the terminal support platform 322.

[0124] Through the cooperation of the conductive spring 3212 and the conductive tube 3211, the wiring terminal 321 can ensure a tight connection with the wiring terminals of the positive high-voltage generator 21 or the negative high-voltage generator 22, and it is also convenient to achieve a sealed setting with the ceramic tube 311.

[0125] Under the action of the positive high-voltage generator 21 and the negative high-voltage generator 22, a voltage difference is formed in the reaction chamber. The excited electrons are accelerated under the action of the voltage difference. The accelerated electrons hit the tungsten target in the reaction chamber to generate X-rays. The generated X-rays are emitted outward through the ray outlet 312 and are emitted to the item to be detected.

[0126] In this embodiment, a positive high-voltage generator housing 212 is provided on the positive high-voltage generator 21, and a negative high-voltage generator housing 222 is provided on the negative high-voltage generator 22. A housing mounting hole 200 is formed on the side of the positive high-voltage generator housing 212 facing the body 31, and a housing mounting hole 200 is also formed on the side of the negative high-voltage generator housing 222 facing the body 31.

[0127] The ray source device further includes a radiation shield 8 sleeved outside the light source generator. The material of the radiation shield 8 is lead. Using lead material can better achieve the shielding of X-rays. It can be understood that a radiation shield avoidance hole opposite to the position of the ray exit 312 is provided on the radiation shield 8, and the radiation shield 8 is sleeved outside the body.

[0128] Due to the addition of the positive high-voltage generator 21, the risk of high-voltage creepage of the ray source device is increased, and higher requirements are put forward for the assembly of the ray source device. In order to tightly press the light source generator 3 between the positive high-voltage generator 21 and the negative high-voltage generator 22, the following design is carried out:

[0129] The positive high-voltage generator 21 is fixed on the base 1. In this embodiment, the positive high-voltage generator 21 is directly installed and fixed on the base 1 by bolts.

[0130] The base 1 further has an abutting positioning groove 12 and an abutting positioning member 101 that cooperates with the abutting positioning groove 12. The abutting positioning member 101 is used to abut against the negative high-voltage generator 22 to limit the movement of the negative high-voltage generator 22 in the direction away from the positive high-voltage generator 21.

[0131] In this embodiment, when fixing the two high-voltage generators, one of them is directly fixed first, and then the other is finally installed and fixed in an abutting manner. The setting of such a structure can make the position of the later installed and fixed high-voltage generator more flexible, so that it can be adjusted according to the actual situation, and the light source generator 3 can be more tightly pressed between the two high-voltage generators.

[0132] As Figures 5-6 shown, a waist-shaped hole 13 is provided at the position on the base 1 opposite to the negative high-voltage generator 22. A positioning bolt 25 is provided on the negative high-voltage generator 22. The positioning bolt 25 can move along the waist-shaped hole 13 in the direction close to or away from the positive high-voltage generator 21. After the position of the negative high-voltage generator 22 is adjusted in place, the negative high-voltage generator 22 is fixed to the base 1 through the positioning bolt 25.

[0133] During the positioning of the positioning bolt 25 on the negative high-voltage generator 22, it slides along the kidney-shaped hole 13, thereby imposing certain restrictions on the adjustment direction of the position of the negative high-voltage generator 22. After the adjustment is in place, the negative high-voltage generator 22 is locked and fixed on the base 1 through the positioning bolt 25. The setting of the above structure enables the negative high-voltage generator 22 to be better installed and fixed.

[0134] The whole body 31 is cylindrical and extends along the width direction of the base 1. The body 31 and the abutting positioning groove 12 are arranged on the opposite sides of the negative high-voltage generator 22, and the whole abutting positioning groove 12 is located in the extending direction of the body 31. The abutting force required at the place where the negative high-voltage generator 22 is opposite to the light source generator 3 is the largest. Therefore, setting the abutting positioning groove 12 opposite to the position of the light source generator 3 can better realize the tight engagement between the light source generator 3 and the high-voltage generator.

[0135] The whole abutting positioning groove 12 is strip-shaped and extends along the length direction of the base 1. One end of the abutting positioning groove 12 extends to the edge of the base 1 and opens outward from the side wall of the base 1 to form a lateral opening of the positioning groove;

[0136] In this embodiment, as Figure 14 and 15 shown, the abutting positioning member 101 includes a positioning support plate 1011 and an abutting member 1012. The positioning support plate 1011 is positioned in the abutting positioning groove 12, and the abutting member 1012 is installed and fixed on the positioning support plate 1011 and the abutting member 1012 abuts against the negative high-voltage generator 22. The positioning support plate 1011 is positioned and supported on the base 1 and is used to support the abutting member 1012 so that the abutting member 1012 can abut tightly against the negative high-voltage generator 22.

[0137] After the positioning support plate 1011 is positioned and supported on the base 1, there is a gap between the positioning support plate 1011 and the negative high-voltage generator 22.

[0138] Specifically, in order to better realize the stability of the positioning support plate 1011, the ray source device also has mounting plates 611 provided on the negative high-voltage generator 22 and the positive high-voltage generator 21. The mounting plates 611 are connected to the positive high-voltage generator 21 and the negative high-voltage generator 22; the mounting plates 611 can play a role in strengthening the fixation of the positive high-voltage generator 21 and the negative high-voltage generator 22. At the same time, the mounting plates 611 can also be used as the base of the control unit 6 to fix the electronic control devices in the control unit 6.

[0139] The mounting plate 611 is disposed on the side of the negative high-voltage generator 22 away from the base 1. Part of the mounting plate 611 extends out of the negative high-voltage generator 22 in the lateral direction to form a lateral support portion 6111. One end of the positioning support plate 1011 away from the base 1 is positioned on the lateral support portion 6111; the base 1 is fixedly installed at the bottom of the negative high-voltage generator 22, and the mounting plate 611 is correspondingly fixedly installed at the top of the negative high-voltage generator 22 here.

[0140] On the side of the lateral support portion 6111 facing the base 1, a mounting plate groove body is provided. The mounting plate groove body is opposite to the position of the abutting positioning groove 12 on the base 1. The upper and lower sides of the positioning support plate 1011 are respectively positioned in the mounting plate groove body and the abutting positioning groove 12; both ends of the positioning support plate 1011 are fixedly installed on the mounting plate 611 and the base 1, realizing the stable installation of the positioning support plate 1011.

[0141] It can be understood that, in order to facilitate the installation and fixation of the positioning support plate 1011, one side of the mounting plate groove body is also exposed from the side of the mounting plate 611. After the mounting plate 611 is installed and fixed, the positioning support plate 1011 can be directly inserted into it from the lateral direction, and the positioning support plate 1011 slides and installs along the mounting plate groove body and the abutting positioning groove 12 at the same time.

[0142] The positioning support plate 1011 is provided with a support plate through hole. The abutting member 1012 includes an abutting flange and an extending abutting portion provided on the abutting flange. The abutting flange is fixed on the positioning support plate 1011, and the extending abutting portion penetrates through the support plate through hole and abuts against the negative high-voltage generator 22;

[0143] The abutting flange is fixed on the side of the positioning support plate 1011 away from the negative high-voltage generator 22. The abutting flange is set to limit passing through the support plate through hole. The abutting flange is fixed on the positioning support plate 1011 to provide support for the abutting of the abutting portion against the negative high-voltage generator 22.

[0144] In this embodiment, the ray source device further has an elastic member, and the elastic member is pressed between the negative high-voltage generator 22 and the abutting member; the abutting flange is fixedly installed on the positioning support plate 1011 through bolts.

[0145] The elastic member can be a compression spring. Arranging an elastic member between the negative high-voltage generator 22 and the abutting member can make the abutting force of the abutting member acting on the negative high-voltage generator 22 more flexible, avoiding the problem of excessive extrusion.

[0146] In other embodiments, the abutting and fixing of the negative high-voltage generator can also be achieved in other ways. For example, when the abutting positioning member moves from the side opening of the positioning groove towards the other end of the abutting positioning groove 12, the abutting force between the abutting positioning member and the negative high-voltage generator 2 gradually increases.

[0147] The above structural setting of the abutting positioning member enables the abutting positioning member to achieve stepless adjustment, which can meet different working conditions.

[0148] One side of the abutting positioning member facing the negative high-voltage generator 22 forms an abutting surface, and the distance from the abutting surface to the negative high-voltage generator 22 gradually decreases from the first end to the second end of the abutting surface; the whole abutting surface is an inclined surface.

[0149] In this embodiment, in order to more conveniently position the positive high-voltage generator 21, a positive positioning groove 14 is provided on the base 1 at a position opposite to the positive high-voltage generator 21, and a positioning protrusion is provided on the positive high-voltage generator 21 for plugging and matching with the positive positioning groove 14.

[0150] The positioning of the positive high-voltage generator 21 is conveniently achieved through the cooperation of the positioning protrusion and the positive positioning groove 14. After the positioning is completed, the positive high-voltage generator 21 is installed and fixed by bolts, which more conveniently realizes the installation and fixation of the positive high-voltage generator 21.

[0151] Furthermore, in order to better achieve the positioning effect, the whole positive positioning groove 14 is located in the extending direction of the body 31.

[0152] The ray source device disclosed in this application is taken as a whole module. In order to facilitate the transportation, picking up, placing, disassembling of the ray source device, a handle 11 is provided on the base 1.

[0153] The present utility model also discloses a detection device, including a frame body and the ray source device as described above, and the ray source device is arranged on the frame body. The detection device can be a security inspection device, a human body detection device, or an industrial non-destructive testing device.

[0154] The structure, features, and function effects of the present utility model have been described in detail based on the embodiments shown in the drawings above. The above are only the preferred embodiments of the present utility model, but the present utility model is not limited to the scope defined by the drawings. Any changes made according to the concept of the present utility model, or equivalent embodiments modified into equivalent changes, still within the spirit covered by the specification and the drawings, shall be within the protection scope of the present utility model.

Claims

1. A ray source device, characterized in that: It includes a high-voltage generator and a light source generator. The light source generator includes a body and a power supply base arranged at the end of the body; The ray source device further has an insulating washer and an annular shielding portion tightly fixed between the high-voltage generator and the body. The insulating washer is arranged around the power supply base; the annular shielding portion is arranged around the insulating washer to prevent the insulating washer from being exposed outward after installation and fixation.

2. The ray source device according to claim 1, wherein: The annular shielding portion is arranged on the body; A docking structure is arranged on the high-voltage generator and is arranged in cooperation with the body. The insulating washer is pressed tightly between the docking structure and the body; an avoidance groove adapted to the annular shielding portion is arranged on the docking structure; After the insulating washer is pressed tightly and fixed, the annular shielding portion is located in the avoidance groove.

3. The ray source device according to claim 2, wherein: The annular shielding portion and the end of the body enclose a washer positioning groove for positioning the insulating washer; After the insulating washer is positioned, the insulating washer does not protrude out of the washer positioning groove along the axial direction of the body.

4. The ray source device according to claim 3, characterized in that: The annular shielding portion is arranged on the body and is relatively arranged at a position close to the outer wall of the body.

5. The ray source device according to claim 3, characterized in that: The power supply base includes a terminal support platform and a wiring terminal arranged on the terminal support platform; the insulating washer is sleeved outside the terminal support platform; the insulating washer is positioned between the support platform and the annular shielding portion; The insulating washer is integrally annular and has an inner ring wall and an outer ring wall. The outer ring wall fits to the inner side of the annular shielding portion, and the inner ring wall fits to the outer wall of the terminal support platform.

6. The ray source device according to claim 3, characterized in that: The body includes a ceramic tube and a metal cover body covering the outside of the ceramic tube. Part of the metal cover body extends out of the end of the ceramic tube along the axial direction of the ceramic tube to form the annular shielding portion.

7. The ray source device according to claim 2, wherein: A receiving groove adapted to the body is formed on one side of the docking structure facing the body, and the body is positioned in the receiving groove; The insulating washer is pressed tightly and positioned at the bottom of the receiving groove; the avoidance groove is recessed from the bottom of the receiving groove in a direction away from the opening of the receiving groove.

8. The radiation source device according to claim 7, characterized in that: The high-voltage generator has a generator housing. A housing mounting hole is formed on one side of the generator housing facing the body; The docking structure includes an insulating body arranged in the generator housing and an annular mounting portion arranged on the insulating body. The receiving groove is arranged on the insulating body, and the annular mounting portion is located at the edge of the receiving groove; The annular mounting portion is fixed outside the generator housing, and the annular mounting portion is fixed at the edge of the housing mounting hole.

9. The ray source device according to claim 8, characterized in that: The insulating body includes a receiving portion, a transition portion and an extending portion. The receiving groove is arranged on the receiving portion. The transition portion extends in a direction away from the receiving groove and has a transition portion through hole communicating with the receiving groove. The transition portion through hole has an inlet arranged at the bottom of the receiving groove; The extending direction of the extending portion intersects with the extending direction of the transition portion.

10. The ray source device according to claim 9, wherein: The generator housing is integrally in a cuboid structure and has a length direction and a width direction. The transition portion extends integrally along the width direction of the generator housing, and the extending portion extends integrally along the length direction of the generator housing; The extending direction of the extension part is perpendicular to the extending direction of the transition part.

11. The ray source device according to claim 9, wherein: The outer wall of the extension part is curved; The extension part is integrally formed in a corrugated shape.

12. The ray source device according to claim 9, characterized in that: The receiving part, the transition part and the extension part are integrally formed. The annular mounting part includes a flange ring integrally formed on the receiving part. A plurality of mounting holes arranged in a ring shape are provided on the annular mounting part. The annular mounting part is arranged on the side of the receiving part away from the transition part; The insulating body is made of lead yellow; the outer diameter of the transition part gradually decreases as it is farther away from the accommodating groove; the outer diameter of the extension part also gradually shortens as it is farther away from the transition part. An extension part perforation communicating with the perforation of the transition part is provided on the extension part.

13. The ray source device according to claim 8, characterized in that: The ray source device further includes a mounting flange fixed on the generator housing, and the mounting flange presses and fixes the annular mounting part on the generator housing.

14. The ray source device according to claim 6, wherein: The body includes a reaction cavity arranged in the ceramic tube, a tungsten target arranged in the reaction cavity, and a ray outlet arranged on the ceramic tube; the ray outlet is integrally formed with the ceramic tube; The power supply base is arranged on the ceramic tube and extends into the reaction cavity, and the power supply base is hermetically arranged with the ceramic tube; A plurality of wiring terminals are provided on the power supply base; There are three wiring terminals. Each wiring terminal is provided with a conductive tube, and each conductive tube is provided with a conductive spring; The ray source device further has a radiation shield sleeved outside the light source generator.

15. The ray source device according to claim 5, wherein: The high-voltage generator includes a positive high-voltage generator and a negative high-voltage generator arranged oppositely. The body is pressed between the positive high-voltage generator and the negative high-voltage generator. An insulating washer is pressed between the body and the positive high-voltage generator, and an insulating washer is also pressed between the body and the negative high-voltage generator.

16. A detection device, characterized in that: It includes a frame body and the ray source device according to any one of claims 1 to 15, and the ray source device is arranged on the frame body.

Images