Ray source device and detection equipment

Abstract

The utility model discloses a radiation source device and detection equipment. The radiation source device comprises a base, a pair of high-voltage generators and a light source generator, wherein the high-voltage generators are arranged on the base and are oppositely arranged, and the light source generator is arranged between the high-voltage generators. The light source generator comprises a body tightly pressed between the pair of high-voltage generators and a pair of power sockets arranged on the two opposite sides of the body. The pair of high-voltage generators comprises a positive high-voltage generator and a negative high-voltage generator, the positive high-voltage generator is fixed on the base, and the base is further provided with an abutting positioning groove and an abutting positioning piece matched with the abutting positioning groove; the abutting positioning piece is used for abutting against the cathode high-voltage generator to limit the cathode high-voltage generator to move in the direction away from the anode high-voltage generator. When the two high-voltage generators are fixed, one high-voltage generator is directly fixed, and then the other high-voltage generator is finally installed and fixed in an abutting mode, so that the light source generator is tightly pressed between the two high-voltage generators.

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 Technique

[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 tends to be white-hot. The market not only requires stable and reliable quality, but also higher performance requirements.

[0003] At present, conventional 160KV ray sources are generally adopted in the market. However, the output voltage of 160KV is relatively low and cannot penetrate thicker or denser metals. Increasing the output voltage can improve the penetration of the ray source. However, after the voltage is increased, the phenomenon of high-voltage creepage is likely to occur. Therefore, the assembly requirements for the ray source device are relatively high. The existing assembly methods of the ray source device cannot well meet the actual needs. Content 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. It 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 can be more tightly pressed between the two high-voltage generators.

[0005] The ray source device provided by the utility model includes a base, a pair of relatively arranged high-voltage generators arranged on the base, and a light source generator arranged between the pair of high-voltage generators;

[0006] The light source generator includes a body pressed between the pair of high-voltage generators and a pair of power supply seats arranged on the opposite sides of the body;

[0007] The pair of high-voltage generators are respectively a positive high-voltage generator and a negative high-voltage generator, and the positive high-voltage generator is fixed on the base;

[0008] The base also has an abutting positioning groove and an abutting positioning member cooperating with the abutting positioning groove. The abutting positioning member is used to abut against the negative high-voltage generator to limit the negative high-voltage generator from moving away from the positive high-voltage generator.

[0009] Further, a kidney-shaped hole is provided on the base at a position opposite to the position of the negative high-voltage generator. A positioning bolt is provided on the negative high-voltage generator. The positioning bolt can move along the kidney-shaped hole in a direction closer to or farther from the positive high-voltage generator. After the position of the negative high-voltage generator is adjusted in place, the negative high-voltage generator is fixed to the base through the positioning bolt.

[0010] Further, the body is integrally cylindrical and extends along the width direction of the base. The body and the abutting positioning groove are arranged on opposite sides of the negative high-voltage generator, and the abutting positioning groove is entirely located in the extending direction of the body.

[0011] Further, the abutting positioning groove is integrally strip-shaped and extends along the length direction of the base. One end of the abutting positioning groove extends to the edge of the base and opens outward from the side wall of the base to form a positioning groove side opening.

[0012] The abutting positioning member includes a positioning support plate and an abutting member. The positioning support plate is positioned in the abutting positioning groove. The abutting member is installed and fixed on the positioning support plate, and the abutting member abuts against the negative high-voltage generator.

[0013] Further, the ray source device also has mounting plates provided on the negative high-voltage generator and the positive high-voltage generator. The mounting plates are connected between the positive high-voltage generator and the negative high-voltage generator.

[0014] The mounting plate is provided on the side of the negative high-voltage generator away from the base. Part of the mounting plate extends out of the negative high-voltage generator in the lateral direction to form a lateral support portion. The end of the positioning support plate away from the base is positioned on the lateral support portion.

[0015] On the side of the lateral support portion facing the base, a mounting plate groove body is provided. The mounting plate groove body is opposite to the abutting positioning groove on the base. The upper and lower sides of the positioning support plate are respectively positioned in the mounting plate groove body and the abutting positioning groove.

[0016] A support plate through-hole is provided on the positioning support plate. The abutting member includes an abutting flange and an extended abutting portion provided on the abutting flange. The abutting flange is fixed on the positioning support plate. The extended abutting portion passes through the support plate through-hole and abuts against the negative high-voltage generator.

[0017] The ray source device also has an elastic member. The elastic member is pressed between the negative high-voltage generator and the abutting member. The abutting flange is installed and fixed on the positioning support plate through bolts.

[0018] Further, a positive electrode positioning groove is provided at a position on the base opposite to the position of the positive high-voltage generator, and a positioning protrusion is provided on the positive high-voltage generator and is in plug-in fit with the positive electrode positioning groove.

[0019] Further, the positive electrode positioning groove is entirely located in the extending direction of the body;

[0020] The positive high-voltage generator is fixedly installed on the base by bolts.

[0021] Further, both the positive high-voltage generator and the negative high-voltage generator have a generator housing, and the ray source device further has an insulating washer tightly arranged between the body and the generator housing;

[0022] A docking structure opposite to the body is provided on the generator housing. A receiving groove is formed on one side of the docking structure facing the body. The body is positioned in the receiving groove, and the insulating washer is tightly arranged between the docking structure and the body;

[0023] The insulating washer is tightly positioned at the bottom of the receiving groove and is arranged around the power supply base.

[0024] Further, the body includes a ceramic tube having a reaction chamber, a tungsten target arranged in the reaction chamber, and a ray exit port arranged on the ceramic tube; the ray exit port is integrally formed with the ceramic tube;

[0025] The power supply base is arranged on the ceramic tube and extends into the reaction chamber, and the power supply base is hermetically arranged with the ceramic tube;

[0026] A plurality of wiring terminals are provided on the power supply base;

[0027] Three wiring terminals are provided. Each wiring terminal is provided with a conductive tube, and each conductive tube is provided with a conductive spring;

[0028] The ray source device further has a radiation cover sleeved outside the light source generator, and the radiation cover is tightly pressed between the positive high-voltage generator and the negative high-voltage generator.

[0029] The present utility model also discloses a detection device, including the ray source device as described above, and the ray source device is arranged on the frame body.

[0030] Compared with the prior art, when fixing two high-voltage generators in the present utility model, one of them is directly fixed first, and then the other is finally installed and fixed by abutting. Such a structural setting enables the position of the later-installed and fixed high-voltage generator to have greater flexibility, so that it can be adjusted according to the actual situation, and the light source generator can be more tightly pressed between the two high-voltage generators. Brief Description of the Drawings

[0031] Figure 1 is the first structural schematic diagram of the ray source device disclosed in the embodiment of the present utility model;

[0032] Figure 2 is the second structural schematic diagram of the ray source device disclosed in the embodiment of the present utility model;

[0033] Figure 3 is the front view of the ray source device disclosed in the embodiment of the present invention;

[0034] 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;

[0035] Figure 5 is the third structural schematic diagram of the ray source device disclosed in the embodiment of the present utility model;

[0036] Figure 6 is the first structural schematic diagram of the base in the ray source device disclosed in the embodiment of the present utility model;

[0037] Figure 7 is the structural schematic diagram of the light source generator in the ray source device disclosed in the embodiment of the present utility model;

[0038] 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 utility model;

[0039] Figure 9 is the exploded view of the ray source device disclosed in the embodiment of the present utility model;

[0040] Figure 10 is the structural schematic diagram of the docking structure in the ray source device disclosed in the embodiment of the present utility model;

[0041] Figure 11 is the perspective view of another docking structure in the ray source device disclosed in the embodiment of the present utility model;

[0042] Figure 12 is the front view of the docking structure in the ray source device disclosed in the embodiment of the present utility model;

[0043] Figure 13 isFigure 12 Cross-sectional view in the BB direction;

[0044] Figure 14 It is the first overall structural schematic diagram of the ray source device disclosed in the embodiment of the present invention after the control unit is installed and fixed;

[0045] Figure 15 It is the second overall structural schematic diagram of the ray source device disclosed in the embodiment of the present invention after the control unit is installed and fixed;

[0046] Explanation of reference numerals: 1 - base, 10 - clearance space, 11 - handle, 12 - abutting positioning groove, 13 - kidney-shaped hole, 14 - positive electrode positioning groove,

[0047] 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 portion, 2312 - transition portion, 2313 - extending portion, 232 - annular mounting portion, 233 - avoidance groove, 24 - mounting flange, 25 - positioning bolt,

[0048] 3 - light source generator, 31 - body, 311 - ceramic tube, 312 - ray exit port, 32 - power supply base, 321 - wiring terminal, 3211 - conductive tube, 3212 - conductive spring, 322 - terminal support platform, 33 - washer positioning groove, 34 - metal cover, 4 - cooling system, 41 - exchanger, 5 - transformer component, 51 - transformer box, 6 - control unit, 61 - control unit housing, 611 - mounting plate, 6111 - lateral support portion, 612 - housing cover, 7 - insulating washer, 8 - radiation shield, 9 - annular shielding portion, 101 - abutting positioning member, 1011 - positioning support plate, 1012 - abutting member. Detailed implementation manners

[0049] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0050] Embodiments of the present invention: A ray source device is disclosed. The ray source device is used to generate X-rays and can be used in security inspection equipment to detect items or in non-destructive testing equipment to detect product defects, such as defect problems like cracks and air bubbles generated on products.

[0051] As Figures 1-9As shown in the figure, the ray source device of this embodiment includes a base 1, a pair of high-voltage generators 2 disposed on the base 1 and opposite to each other, and a light source generator 3 disposed between the pair of high-voltage generators 2;

[0052] The light source generator 3 includes a body 31 pressed between the pair of high-voltage generators 2 and a pair of power supply seats 32 disposed on opposite sides of the body 31; the body 31 is generally columnar and has two opposite ends in the axial direction, and the pair of power supply seats 32 are respectively disposed at the two ends, and the two high-voltage generators 2 are also correspondingly located at the two ends of the body 31.

[0053] The pair of high-voltage generators 2 are arranged in 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 a transformer component 5. The cooling system 4 cools down the ray source device during operation, and the transformer component 5 is used to convert the input voltage into a voltage available for the high-voltage generator 2. In this embodiment, in order to make better use of the space, the cooling system 4 and the transformer component 5 are disposed in the gap space 10.

[0054] The pair of high-voltage generators 2 are respectively a positive high-voltage generator 21 and a negative high-voltage generator 22. Under the combined action of the positive high-voltage generator 21 and the negative high-voltage generator 22, the light source generator 3 is correspondingly located in a larger voltage field, so as to better accelerate the electrons in the light source generator 3, so that the generated X-rays have stronger penetrability and can test thicker objects.

[0055] 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.

[0056] The ray source device further has an insulating gasket 7. The insulating gasket 7 is disposed between the body 31 and the positive high-voltage generator 21, and the insulating gasket 7 is pressed between the body 31 and the positive high-voltage generator 21. The insulating gasket 7 is also disposed between the body 31 and the negative high-voltage generator 22, and the insulating gasket 7 surrounds the power supply seat 32.

[0057] In this embodiment, pressing and fixing the insulating gasket 7 between the high-voltage generator 2 and the light source generator 3 can isolate the power supply seat 32 surrounded by the insulating gasket 7 from the outside, so that the power supply seat 32 has better sealing performance and can reduce the occurrence of high-voltage creepage problems when electrically connected to the high-voltage generator.

[0058] In this embodiment, as Figure 7As shown in the figure, several wiring terminals 321 are provided on the power socket 32; there are three of the wiring terminals, and the wiring terminal 321 includes a conductive tube 3211 and a conductive spring 3212 provided on the conductive tube 3211. In this embodiment, both the conductive tube 3211 and the conductive spring 3212 are provided on the terminal support platform 322.

[0059] 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 terminal 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.

[0060] 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, and the accelerated electrons hit the tungsten target in the reaction chamber to generate X-rays. The generated X-rays are emitted outwards through the ray outlet 312 and emitted to the item to be detected.

[0061] In this embodiment, the ray source device further has a base 1, a high-voltage generator 2, and a light source generator 3, all of which are provided 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 at the same time makes the integration degree of the ray source device higher.

[0062] In this embodiment, there are a pair of high-voltage generators 2, namely a positive high-voltage generator 21 and a negative high-voltage generator 22, 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 provided in the gap space 10. The cooling system 4 is used to cool down the ray source device.

[0063] For a more integrated setting, the cooling system 4 and the transformer component 5 can be simultaneously provided in the gap space 10 between the pair of high-voltage generators 2, or only one of the above two can be provided. Of course, other devices such as a control unit 6 can also be provided between the two.

[0064] In this embodiment, the positive high-voltage generator 21 and the negative high-voltage generator 22 are integrally provided on the base 1, and the cooling system 4 and the transformer component 5 are provided in the gap space 10 formed therebetween, which can better utilize the space between the two high-voltage generators 2, make the ray source device have a smaller volume, higher integration degree of the ray source device, and make the ray source device more compact.

[0065] On one side facing the negative high-voltage generator 22, the positive high-voltage generator 21 is provided with a positive plug 211, and on one side facing the positive high-voltage generator 21, the negative high-voltage generator 22 is provided with a negative plug 221.

[0066] 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.

[0067] It should be noted that in other embodiments, the positive plug 211 and the negative plug 221 can also be set at other positions according to actual needs.

[0068] 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, a positive cable and a negative cable (not shown in the figure) provided in the transformer box body 51. It can be understood that a transformer for voltage transformation control is provided in the transformer box body 51, and the positive cable and the negative cable are respectively electrically connected to the transformer.

[0069] In this embodiment, in order to better achieve control, as Figures 14-15 shown, the ray source device further has a control unit 6. After the transformer component 5 transforms the voltage, 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 respectively electrically connected to the control unit 6, and the control unit 6 is respectively connected to the positive plug 211 and the negative plug 221 through cables.

[0070] In this embodiment, the external power supply provides a voltage of 220V. After being converted by the transformer component 5, the 220V voltage is transformed into a 160V voltage for the use of the positive high-voltage generator 21 and a 160V voltage for the use of 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 achieve the acceleration of electrons, so that the X-rays generated after hitting the tungsten target have stronger penetrability and the images generated after detection have higher resolution.

[0071] Of course, in other embodiments, the positive cable can also be directly electrically connected to the positive plug 211, and the negative cable can be directly electrically connected to the negative plug 221.

[0072] The positive high-voltage generator 21 and the negative high-voltage generator 22 both 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.

[0073] It can be understood that in other embodiments, the transformer box body 51 can also be fixed on the upper surfaces of two transformer box bodies at the same time, and the transformer box body 51 straddles the gap space 10.

[0074] The positive high-voltage generator 21 includes a positive generator casing 212, the negative high-voltage generator 22 has a negative high-voltage generator casing 222, the transformer box body 51 is fixed between the positive generator casing 212 and the negative high-voltage 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 high-voltage generator casing 222 at the same time.

[0075] 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 radiation source device, making the structure of the entire radiation source device more compact.

[0076] As Figures 14-15 shown, the radiation source device further has 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.

[0077] Specifically, the control unit casing 61 is respectively connected and fixed to the negative high-voltage generator casing 222 and the positive generator casing 212. The above arrangement of the control unit casing 61 also functions to connect the two high-voltage generators, enabling the negative high-voltage generator casing 222 and the positive generator casing 212 to be more stably fixed on the base 1, so that the light source generator 3 is more stably pressed and fixed between the positive high-voltage generator 21 and the negative high-voltage generator 22.

[0078] The control unit casing 61 is fixedly arranged at a position opposite to the position of the body 31; the control unit casing 61 is fixed directly above 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 casing 61 at a position opposite to the position of the body 31 can better achieve the above effects.

[0079] In this embodiment, as Figure 14 and 15As shown, the control unit housing 61 includes a mounting plate 611 and a housing cover 612 provided on the mounting plate 611. A housing space is formed between the mounting plate 611 and the housing cover 612, and the electric control devices of the control unit are arranged in the housing space.

[0080] 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 electric control devices of the control unit.

[0081] Due to the addition of the positive high-voltage generator 21, the risk of high-voltage creepage of the radiation source device is increased, and higher requirements are put forward for the assembly of the radiation source device. In order to make the light source generator 3 more tightly pressed between the positive high-voltage generator 21 and the negative high-voltage generator 22, the following design is carried out:

[0082] 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 through bolts.

[0083] 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 negative high-voltage generator 22 from moving away from the positive high-voltage generator 21.

[0084] 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. Such a structural setting enables the position of the later-installed and fixed high-voltage generator to have greater flexibility, so that it can be adjusted according to the actual situation, making the light source generator 3 more tightly pressed between the two high-voltage generators.

[0085] As Figures 5-6 shown, a waist-shaped hole 13 is provided at a position on the base 1 opposite to the position of 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 a 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.

[0086] 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 direction of adjustment of the position of the negative high-voltage generator 22. After the adjustment is in place, it 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.

[0087] The main body 31 is integrally cylindrical and extends along the width direction of the base 1. The main 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 main body 31. The abutting force required is the greatest where the negative high-voltage generator 22 is opposite to the light source generator 3. Therefore, setting the abutting positioning groove 12 opposite to the position of the light source generator 3 can better achieve the tight engagement between the light source generator 3 and the high-voltage generator 2.

[0088] 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;

[0089] 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.

[0090] 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.

[0091] 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 control unit 6 to fix the electronic control devices in the control unit 6.

[0092] The mounting plate 611 is disposed on the side of the negative high-voltage generator 22 facing away from the base 1. A 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. The 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.

[0093] 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 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 respectively, realizing the stable installation of the positioning support plate 1011.

[0094] 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. The positioning support plate 1011 slides and installs along the mounting plate groove body and the abutting positioning groove 12 at the same time.

[0095] The positioning support plate 1011 is provided with a support plate through-hole. The abutting member 1012 includes an abutting flange and an extended abutting portion provided on the abutting flange. The abutting flange is fixed on the positioning support plate 1011. The extended abutting portion passes through the support plate through-hole and abuts against the negative high-voltage generator 22.

[0096] The abutting flange is fixed on the side of the positioning support plate 1011 facing away from the negative high-voltage generator 22. The abutting flange is configured 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.

[0097] In this embodiment, the ray source device further has an elastic member. 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 by bolts.

[0098] 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 exerted by the abutting member on the negative high-voltage generator 22 more flexible, avoiding the problem of excessive extrusion.

[0099] 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.

[0100] The above structural settings of the abutting positioning member enable the abutting positioning member to achieve stepless adjustment, which can meet different working conditions.

[0101] One side of the abutting positioning member facing the negative high-voltage generator 22 forms an abutting surface. From the first end to the second end of the abutting surface, the distance between the abutting surface and the negative high-voltage generator 22 gradually decreases; the abutting surface is integrally inclined.

[0102] In this embodiment, in order to more conveniently position the positive high-voltage generator 21, a positive positioning groove 14 is provided at a position on the base 1 opposite to the position of 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.

[0103] 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 positioning, 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.

[0104] Furthermore, in order to better achieve the positioning effect, the entire positive positioning groove 14 is located in the extending direction of the body 31.

[0105] The ray source device disclosed in this application is taken as a whole module. In order to facilitate the transportation or picking, placing, disassembling of the ray source device, a handle 11 is provided on the base 1.

[0106] The ray source device also has an insulating washer 7 and an annular shielding part 9 that are 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 surface of the insulating washer 7, which can reduce the risk of high-voltage creepage.

[0107] 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. At the same time, after 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 and reduce the occurrence of high-voltage creepage problems.

[0108] As Figures 1-9 shown, in this embodiment, 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 main body 31 and the positive high-voltage generator 21, and an insulating washer 7 is also provided between the main body 31 and the negative high-voltage generator 22.

[0109] Compared with the control method using a single-pole voltage in the prior art, although the use of a bipolar high voltage improves the penetrability of the generated X-rays, the addition of the positive high voltage easily causes problems such as high-voltage creepage, resulting in unstable operation of the equipment. In this embodiment, a layer of annular shielding portion 9 is provided outside the insulating washer 7, which can effectively reduce the occurrence of high-voltage creepage problems.

[0110] For the convenience of setting the annular shielding portion 9, in this embodiment, the annular shielding portion 9 is provided on the main body 31. A docking structure 23 is provided on the high-voltage generator 2 and is arranged in cooperation with the main body 31. The insulating washer 7 is pressed between the docking structure 23 and the main body 31; an avoidance groove 233 adapted to the annular shielding portion 9 is provided on the docking structure 23;

[0111] After the insulating washer 7 is pressed and fixed, the annular shielding portion 9 is located in the avoidance groove 233.

[0112] The setting 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 main 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 tight crimping, 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.

[0113] 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 hard material, if the annular shielding portion 9 is squeezed during the pressing of the main body 31, it is not only easy to generate deformation or rupture 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.

[0114] The annular shielding portion 9 and the end of the main body 31 enclose a washer positioning groove 33 for positioning the insulating washer 7; in this embodiment, the main body 31 is an overall cylindrical ceramic tube. The annular shielding portion 9 is provided on the main body 31 and encloses the washer positioning groove 33 for positioning the insulating washer 7 with the end of the main 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.

[0115] After the insulating washer 7 is positioned, the insulating washer 7 does not protrude from the washer positioning groove 33 in the axial direction of the body 31; in this embodiment, the insulating washer 7 is flush with the end of the annular shielding portion 9 in the axial direction of the body 31. If the insulating washer 7 extends out of the washer positioning groove 33, it is prone to extrusion deformation outside the washer positioning groove 33 during the extrusion process, so that part of the insulating washer 7 is pressed between the annular shielding portion and the docking structure 23, which not only causes damage to the insulating washer 7, but also affects the pressing effect.

[0116] The annular shielding portion 9 is oppositely arranged near 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 the larger the cross-sectional dimension of the corresponding insulating washer 7 that can be positioned.

[0117] 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 setting of the above thickness of the insulating washer 7 can better increase the creepage distance, thereby avoiding high-voltage leakage.

[0118] The power socket 32 includes a terminal support platform 322 and a wiring terminal 321 arranged on the terminal support platform; the insulating washer 7 is sleeved outside the terminal support platform 322; the insulating washer 7 is positioned between the terminal support platform 322 and the annular shielding portion 9;

[0119] 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 platform 322.

[0120] 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 prone to cause the displacement of the position of the insulating washer 7. If part of the insulating washer 7 runs off during the pressing process, it will cause the scrapping of the product. In this embodiment, the insulating washer 7 is sleeved outside the terminal support platform 322, which actually makes the terminal support platform 322 also play a positioning role for the insulating washer. In this way, the annular insulating washer 7 is simultaneously positioned and supported by the terminal support platform 322 and the annular shielding portion 9, so that it can be more stable during the pressing process and will not be displaced.

[0121] In this embodiment, the body includes a ceramic tube 311 and a metal cover 34 covering the outside of the ceramic tube 311. A part of the metal cover 34 extends out of the end of the ceramic tube 311 along the axial direction of the ceramic tube 311 to form the annular shielding portion 9. In this embodiment, the annular shielding portion 9 is integrally formed with the metal cover 34 covering the outside of the ceramic tube 311, and as a part of the metal cover 34, it is more convenient to set the annular shielding portion 9. In this embodiment, the power supply base 32 is arranged at the end of the ceramic tube 311.

[0122] 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 arranged on the metal cover 34 or integrally formed with the metal cover 34. Through a delicate design, it is convenient to set the annular shielding portion 9 and makes the structure more concise. The annular shielding portion 9 is arranged on the outer wall of the ceramic tube 311, and it 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.

[0123] The ceramic tube 311 has a reaction chamber. The body 31 also has a tungsten target (not shown in the figure) arranged in the reaction chamber and a ray outlet 312 arranged on the ceramic tube 311; the ray outlet 312 is integrally formed with the ceramic tube 311. The body 31 made of ceramic material has better insulation effect than glass material under high-voltage action. Of course, in other embodiments, glass material can also be used as the body 31.

[0124] The power supply base 32 is arranged 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 supply base 32 needs to be hermetically arranged with the ceramic tube 311.

[0125] Several wiring terminals 321 are arranged on the power supply base 32;

[0126] There are three wiring terminals 321. Each wiring terminal 321 is provided with a conductive tube 3211, and each conductive tube 3211 is provided with a conductive spring 3212;

[0127] It should be noted that in the above embodiments, the annular shielding portion 9 is arranged on the body 31. It can be understood that in other embodiments, the annular shielding portion 9 can also be arranged on the high-voltage generator 2. Specifically, the annular shielding portion 9 is arranged on the docking structure 23. Correspondingly, a receiving portion adapted to the annular shielding portion 9 is arranged on the body 31. The setting of the annular shielding portion 9 only needs to form a sealed covering for the compressed insulating washer 7, and no further limitation is made on the specific structure setting.

[0128] One side of the docking structure 23 facing the body 31 is formed with a receiving groove 230 adapted to the body 31. After installation, the body 31 is positioned in the receiving groove 230.

[0129] The insulating washer 7 is then pressed and positioned at the bottom of the receiving groove 230; the avoiding groove 233 is recessed from the bottom of the receiving groove 230 in a direction away from the opening of the receiving groove 230.

[0130] In this embodiment, when the body 31 is installed and fixed, the insulating washer 7 pressed between the 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 form a certain wrapping and covering of the end of the body 31, so as to better achieve the sealing and shielding effect, reduce the occurrence of high-voltage creepage problems, and at the same time can better position the insulating washer 7, avoid the offset of the insulating washer 7 during the pressing process, and make the equipment operate more stably.

[0131] 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 effectively reduce the occurrence of high-voltage creepage problems.

[0132] In a specific embodiment, as Figure 8 shown, the high-voltage generator 2 has a generator housing, and one side of the generator housing facing the body 31 is formed with a housing mounting hole 200.

[0133] 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 part of the docking structure 23 is located in the cavity.

[0134] As Figures 10-13 shown, the docking structure 23 includes an insulating body 231 disposed in the generator housing and an annular mounting portion 232 disposed on the insulating body 231. The receiving groove 230 is disposed on the insulating body 231, and the annular mounting portion 232 is located at the edge of the receiving groove 230; the insulating body 231 is disposed in the cavity in the corresponding generator housing.

[0135] 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.

[0136] The arrangement of the annular mounting portion 232 can facilitate the installation and fixation of the docking structure 23 on the generator housing.

[0137] The insulating body 231 includes a receiving portion 2311, a transition portion 2312, and an extension portion 2313. The accommodating groove 230 is disposed in 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.

[0138] The extending direction of the extension portion 2313 intersects with the extending direction of the transition portion 2312; in this embodiment, the overall extending direction of the extension portion 2313 is perpendicular to the overall extending direction of the transition portion 2312. In other embodiments, the extending direction of the extension portion 2313 and the extending direction of the transition portion 2312 may also intersect obliquely. The extension portion 2313 and the transition portion 2312 extending in two different directions can enable the insulating body 231 to ensure sufficient extension length without occupying too much space in one direction, thus being more conducive to reducing the size of the device.

[0139] Specifically, the generator housing is generally 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 extension portion 2313 extends integrally along the length direction of the generator housing. The extending direction of the extension portion 2313 is perpendicular to the extending direction of the transition portion 2312.

[0140] 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 extension portion 2313 extending along the length direction. Such a structural arrangement can prevent the insulating body 231 from extending in one direction, thereby occupying too much space in that direction and further increasing the volume of the entire device.

[0141] In this embodiment, the length of the insulating body 231 extending along the width direction and the sum of the lengths extending along the length direction are not less than 5 cm. That is, the sum of the length of the extension 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.

[0142] As the distance from the accommodating groove 230 increases, the outer diameter dimension of the transition portion 2312 gradually decreases; the transition portion 2312 is generally conical. Such a structural arrangement can minimize the size of the transition portion 2312 while ensuring a stable connection with the insulating body 231, saving space and reducing the use of materials.

[0143] In this embodiment, the receiving portion 2311, the transition portion 2312 and the extending portion 2313 are integrally formed. The annular mounting portion 232 is 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 disposed on a side of the receiving portion 2311 away from the transition portion 2312, so that the insulating body 231 is exposed as little as possible.

[0144] As the extending portion 2313 is away from the transition portion 2312, the outer diameter dimension of the extending portion 2313 is gradually shortened. An extending portion perforation communicating with the transition portion perforation is provided on the extending portion 2313.

[0145] The outer wall of the extending portion 2313 is curved; that is, the wall arranged in a curve encloses the extending portion 2313. Setting the extending portion 2313 to be curved can increase the degree of bending of the wall of the extending portion 2313 in the extending direction, so that when the high-voltage electricity climbs outward along the extending portion 2313, the creepage distance is increased, and further the risk of creepage is reduced.

[0146] 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 set in a corrugated shape.

[0147] 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.

[0148] The ray source device further has 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. The radiation shield 8 is sleeved outside the body.

[0149] The present utility model also discloses a detection device, including a frame body and the ray source device as described above. The ray source device is disposed on the frame body. The detection device can be a security inspection device or a human body detection device.

[0150] The structure, features and effects of the present utility model have been described in detail based on the embodiments shown in the drawings. The above is only the preferred embodiment 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 modified into equivalent embodiments with equivalent changes, still within the spirit covered by the description and the drawings, shall be within the protection scope of the present utility model.

Claims

1. A ray source device, characterized in that: It comprises a base, a pair of high-voltage generators arranged on the base and opposite to each other, and a light source generator arranged between the pair of high-voltage generators; The light source generator comprises a body pressed between a pair of the high voltage generators and a pair of power supply sockets arranged on opposite sides of the body; The pair of high voltage generators are respectively a positive high voltage generator and a negative high voltage generator, and the positive high voltage generator is fixed on the base; The base is also provided with an abutment positioning groove and an abutment positioning member matched with the abutment positioning groove, and the abutment positioning member is used to abut against the negative high voltage generator to limit the negative high voltage generator from moving in a direction away from the positive high voltage generator.

2. The ray source device according to claim 1, wherein: A waist-shaped hole is provided on the base at a position opposite to the position of the negative high-voltage generator, and a positioning bolt is provided on the negative high-voltage generator. The positioning bolt can move along the waist-shaped hole toward or away from the positive high-voltage generator. After the position of the negative high-voltage generator is adjusted into place, the negative high-voltage generator is fixed to the base by the positioning bolt.

3. The ray source device according to claim 1, characterized in that: The main body is cylindrical as a whole and extends along the width direction of the base. The main body and the abutment positioning groove are arranged on opposite sides of the negative high voltage generator, and the abutment positioning groove is located in the extension direction of the main body as a whole.

4. The ray source device according to claim 1, wherein: The abutting positioning groove is in the shape of a long strip as a whole and is extended along the length direction of the base. One end of the abutting positioning groove extends to the edge of the base and opens outward from the side wall of the base to form a lateral opening of the positioning groove. The abutment positioning member comprises a positioning support plate and an abutment member, the positioning support plate is positioned in the abutment positioning groove, the abutment member is mounted and fixed on the positioning support plate and the abutment member abuts against the negative high voltage generator.

5. The ray source device according to claim 4, wherein: The ray source device also has a mounting plate arranged on the negative high voltage generator and the positive high voltage generator, and the mounting plate is connected between the positive high voltage generator and the negative high voltage generator; The mounting plate is arranged on a side of the negative high voltage generator away from the base, a part of the mounting plate extends out of the negative high voltage generator in a lateral direction to form a lateral support portion, and an end of the positioning support plate away from the base is positioned on the lateral support portion; A mounting plate slot is provided on one side of the lateral support portion facing the base, the mounting plate slot is opposite to the abutting positioning slot on the base, and the upper and lower sides of the positioning support plate are respectively positioned in the mounting plate slot and the abutting positioning slot; The positioning support plate is provided with a support plate through-hole, the abutment member comprises an abutment flange and an extended abutment portion provided on the abutment flange, the abutment flange is fixed on the positioning support plate, and the extended abutment portion penetrates the support plate through-hole and abuts against the negative high voltage generator; The ray source device further comprises an elastic member, which is pressed between the negative high voltage generator and the abutment member; the abutment flange is fixed on the positioning support plate by bolts.

6. The radiation source device according to claim 3, characterized in that: A positive electrode positioning groove is provided at a position on the base opposite to the position of the positive high-voltage generator, and a positioning protrusion that is inserted and cooperates with the positive electrode positioning groove is provided on the positive high-voltage generator.

7. The ray source device according to claim 6, wherein: The positive electrode positioning groove is entirely located in the extending direction of the body; The positive high-voltage generator is fixedly installed on the base by bolts.

8. The ray source device according to any one of claims 1 to 7, characterized in that: Both the positive high-voltage generator and the negative high-voltage generator have a generator housing, and the ray source device further has an insulating washer that is tightly arranged between the body and the generator housing; A docking structure opposite to the body is provided on the generator housing. A receiving groove is formed on one side of the docking structure facing the body. The body is positioned in the receiving groove, and the insulating washer is tightly arranged between the docking structure and the body; The insulating washer is tightly positioned at the bottom of the receiving groove and is arranged around the power supply base; 9. The ray source device according to claim 8, characterized in that: The body includes a ceramic tube having a reaction chamber, a tungsten target arranged in the reaction chamber, 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 chamber, 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, and 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 cover sleeved outside the light source generator, and the radiation cover is pressed between the positive high-voltage generator and the negative high-voltage generator.

10. A detection device, characterized in that: It includes a frame body and the ray source device according to any one of claims 1 to 9, and the ray source device is arranged on the frame body.

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