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 pair of high-voltage generators are respectively a positive high-voltage generator and a negative high-voltage generator; the light source generator comprises a body tightly pressed between the positive high-voltage generator and the negative high-voltage generator of the pair of high-voltage generators and a pair of power sockets arranged on the two opposite sides of the body. The radiation source device is further provided with an insulating washer surrounding the power socket, an insulating washer is arranged between the body and the positive high-voltage generator, and an insulating washer is also arranged between the body and the negative high-voltage generator. According to the utility model, the light source generator is correspondingly positioned in a larger voltage field under the combined action of the positive electrode high voltage generator and the negative electrode high voltage generator, so that electrons in the light source generator are better accelerated, and excited X-rays have stronger penetrability.

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 treatment 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 reached a white-hot stage. 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, but the output voltage of 160KV is relatively low and cannot penetrate thicker or denser metals. 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. It can make the light source generator located in a larger voltage field under the combined action of the positive high-voltage generator and the negative high-voltage generator, so as to better accelerate the electrons in the light source generator and make the emitted X-rays have stronger penetrability.

[0005] The ray source device provided by the utility model includes 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 pair of high-voltage generators are respectively a positive high-voltage generator and a negative high-voltage generator;

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

[0007] The ray source device also has insulating washers arranged around the power supply seats. There are insulating washers between the body and the positive high-voltage generator, and there are also insulating washers between the body and the negative high-voltage generator.

[0008] Further, the positive high-voltage generator and the negative high-voltage generator are arranged along the width direction of the base and form a gap space therebetween. The ray source device also has a cooling system and / or transformer components and / or a control unit arranged in the gap space.

[0009] Further, the positive high-voltage generator is provided with a positive plug connector on the side facing the negative high-voltage generator, and the negative high-voltage generator is provided with a negative plug connector on the side facing the positive high-voltage generator.

[0010] Further, the transformer component includes a transformer box body fixed on at least one of the positive high-voltage generator and the negative high-voltage generator, a positive cable and a negative cable connected to the transformer box body;

[0011] The ray source device further has a control unit, the control unit is electrically connected to the positive cable and the negative cable respectively, and the control unit is electrically connected to the positive plug and the negative plug respectively.

[0012] Further, both the positive high-voltage generator and the negative high-voltage generator have a generator housing, the transformer box body is fixed between the two generator housings, and the upper surface of the transformer box body is in the same plane as the upper surface of the generator housing.

[0013] Further, the cooling system has an exchanger disposed in the gap space.

[0014] Further, the control unit has a control unit housing, the control unit housing is fixedly connected to the pair of high-voltage generators respectively, and the control unit is fixed on the upper surface of the pair of high-voltage generators.

[0015] Further, the control unit housing is fixedly disposed at a position opposite to the body;

[0016] The control unit housing is fixed directly above the body;

[0017] A handle is provided on the base.

[0018] Further, docking structures opposite to the body are provided on the generator housings, a receiving groove is formed on one side of the docking structure facing the body, the body is positioned in the receiving groove, and an insulating washer is tightly pressed between the docking structure and the body;

[0019] The insulating washer is tightly pressed and positioned at the bottom of the receiving groove and is arranged around the power supply base;

[0020] The body includes a ceramic tube having a reaction cavity, a tungsten target disposed in the reaction cavity, and a ray exit port disposed on the ceramic tube; the ray exit port is integrally formed with the ceramic tube;

[0021] The power supply base is disposed on the ceramic tube and extends into the reaction cavity, and the power supply base is hermetically disposed with the ceramic tube;

[0022] On the side where the light source generator is provided with the power supply base, there is also a washer positioning groove, and the insulating washer is positioned in the washer positioning groove; the washer positioning groove is arranged around the power supply base;

[0023] The power supply base is provided with a plurality of wiring terminals;

[0024] There are three of the wiring terminals, and each wiring terminal is provided with a conductive tube, and each conductive tube is provided with a conductive spring;

[0025] The ray source device further has a radiation shield sleeved outside the light source generator, and the radiation shield is pressed between the positive high-voltage generator and the negative high-voltage generator.

[0026] 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.

[0027] Compared with the prior art, in the present embodiment of the present utility model, under the combined action of the positive high-voltage generator and the negative high-voltage generator, the light source generator is correspondingly located in a larger voltage field, so as to better realize the acceleration of electrons in the light source generator, and make the excited X-rays have stronger penetrability. Description of the Drawings

[0028] Figure 1 is the first structural schematic diagram of the ray source device disclosed in the embodiment of the present utility model;

[0029] Figure 2 is the second structural schematic diagram of the ray source device disclosed in the embodiment of the present utility model;

[0030] Figure 3 is the front view of the ray source device disclosed in the embodiment of the present invention;

[0031] Figure 4 is the installation structural schematic diagram of the main body and the docking structure in the ray source device disclosed in the embodiment of the present invention;

[0032] Figure 5 is the third structural schematic diagram of the ray source device disclosed in the embodiment of the present utility model;

[0033] 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;

[0034] 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;

[0035] Figure 8 is the installation structural schematic diagram of the light source generator high-voltage generator in the ray source device disclosed in the embodiment of the present utility model;

[0036] Figure 9 is the exploded view of the ray source device disclosed in the embodiment of the present utility model;

[0037] 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;

[0038] Figure 11 It is a front view of the docking structure in the ray source device disclosed in the embodiment of the utility model;

[0039] Figure 12 It is a three-dimensional diagram of another docking structure in the ray source device disclosed in the embodiment of the utility model;

[0040] Figure 13 yes Figure 12 Cross-sectional view in the BB direction;

[0041] 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;

[0042] 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;

[0043] Description of reference numerals: 1-base, 10-gap space, 11-handle, 12-abutment positioning groove, 13-waist-shaped hole, 14-positive electrode positioning groove,

[0044] 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,

[0045] 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

[0046] 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 a limitation to the present invention.

[0047] Embodiment of the present invention: 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 defect problems like cracks and air bubbles generated on products.

[0048] As Figures 1-9 shown, the ray source device of this embodiment includes a base 1, a pair of high-voltage generators 2 arranged on the base 1 and opposite to each other, and a light source generator 3 arranged between the pair of high-voltage generators 2;

[0049] 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 arranged on the 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 arranged at the two ends, and the two high-voltage generators 2 are also correspondingly located at the two ends of the body 31.

[0050] The pair of high-voltage generators 2 are arranged along the width direction of the base 1 and form a gap space 10 between them. The ray source device also 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 arranged in the gap space 10.

[0051] The pair of high-voltage generators 2 are respectively a positive high-voltage generator 21 and a negative high-voltage generator 22. Under the joint 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.

[0052] The above structure settings enable 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.

[0053] The ray source device also has an insulating washer 7. The insulating washer 7 is arranged between the body 31 and the positive high-voltage generator 21, and the insulating washer 7 is pressed between the body 31 and the positive high-voltage generator 21. The insulating washer 7 is also arranged between the body 31 and the negative high-voltage generator 22, and the insulating washer 7 is also clamped between the body 31 and the negative high-voltage generator 22 bracket. The insulating washer 7 is arranged around the power supply seat 32.

[0054] 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, thereby enabling the power supply base 32 to have better sealing performance and reducing the occurrence of high-voltage creepage problems when electrically connected to the high-voltage generator.

[0055] In this embodiment, the ray source device further has a base 1, and the high-voltage generator 2 and the light source generator 3 are both 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 at the same time makes the integration degree of the ray source device higher.

[0056] The high-voltage generator 2 is provided with a pair of positive high-voltage generator 21 and negative high-voltage generator 22 respectively. 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 transformer components 5 arranged in the gap space 10. The cooling system 4 is used for cooling the ray source device.

[0057] For more integrated setting, the cooling system 4 and the transformer components 5 can be arranged in the gap space 10 between the pair of high-voltage generators 2 at the same time, 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.

[0058] In this embodiment, integrating the positive high-voltage generator 21 and the negative high-voltage generator 22 on the base 1 and arranging the cooling system 4 and the transformer components 5 in the gap space 10 formed between them can make better use of 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.

[0059] On the side of the positive high-voltage generator 21 facing the negative high-voltage generator 22, a positive plug connector 211 is provided. On the side of the negative high-voltage generator 22 facing the positive high-voltage generator 21, a negative plug connector 221 is provided.

[0060] Setting the positive plug connector 211 on the side of the positive high-voltage generator 21 facing the negative high-voltage generator 22 actually makes the positive plug connector 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 connector 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.

[0061] It should be noted that in other embodiments, the positive plug connector 211 and the negative plug connector 221 can also be arranged at other positions according to actual needs.

[0062] 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.

[0063] In this embodiment, for better realization of control, as Figures 14-15 shown, the ray source device further has a control unit 6. After the voltage is transformed 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 respectively electrically connected to the control unit 6, and the control unit 6 is respectively connected to the positive plug connector 211 and the negative plug connector 221 through cables.

[0064] In this embodiment, the voltage provided by the external power supply is 220V. After being transformed by the transformer component 5, the 220V voltage is transformed into 160V voltage for the use of the positive high-voltage generator 21 and 160V voltage for the use of the negative high-voltage generator 22, forming a voltage difference of 320V at both ends of the light source generator 3 to better realize 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.

[0065] Of course, in other embodiments, the positive cable can also be directly electrically connected to the positive plug connector 211, and the negative cable can be directly electrically connected to the negative plug connector 221.

[0066] Both the positive high-voltage generator 21 and the negative high-voltage generator 22 have a generator housing. The transformer box body 51 is fixed between the two generator housings, and the upper surface of the transformer box body 51 is on the same plane as the upper surfaces of the generator housings.

[0067] 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.

[0068] The positive high-voltage generator 21 includes a positive generator housing 212, the negative high-voltage generator 22 has a negative generator housing 222, the transformer box body 51 is fixed between the positive generator housing 212 and the negative generator housing 222, and the upper surface of the transformer box body 51 is flush with the upper surfaces of the positive generator housing 212 and the negative generator housing 222 at the same time.

[0069] The cooling system 4 has an exchanger 41 disposed in the gap space 10. Disposing the exchanger 41 within the gap space 10 can effectively reduce the occupation of the space of the radiation source device, making the overall structure of the radiation source device more compact.

[0070] 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 housing 61, the control unit housing 61 is respectively connected and fixed to the pair of high-voltage generators 2, and the control unit housing 61 is fixed on the upper surface of the pair of high-voltage generators 2.

[0071] The control unit housing 61 is respectively connected and fixed to the negative generator housing 222 and the positive generator housing 212. The above setting of the control unit housing 61 also serves to connect the two high-voltage generators, enabling the negative generator housing 222 and the positive generator housing 212 to be fixed to the base 1 more stably, 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.

[0072] The control unit housing 61 is fixedly disposed at a position opposite to the position of the body 31; the control unit housing 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 housing 61 at a position opposite to the position of the body 31 can better achieve the above effect.

[0073] In this embodiment, as Figure 14 and 15 shown, the control unit housing 61 includes a mounting plate 611 and a housing cover 612 disposed on the mounting plate 611. A housing space is formed between the mounting plate 611 and the housing cover 612, and the electronic control components of the control unit are disposed in the housing space.

[0074] 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, and the housing cover 612 covers the mounting plate 611 to form a covering protection for the electronic control components of the control unit.

[0075] Due to the addition of the positive high-voltage generator 21, the risk of high-voltage creepage of the radiation source device is increased, which poses higher requirements for the assembly of the radiation 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:

[0076] 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.

[0077] 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.

[0078] 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, thereby enabling the light source generator 3 to be more tightly pressed between the two high-voltage generators.

[0079] 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 in 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.

[0080] The positioning bolt 25 slides along the waist-shaped hole 13 during the positioning of the negative high-voltage generator 22, thereby imposing a certain restriction on the adjustment direction of the position of the negative high-voltage generator 22. After the adjustment is in place, it is locked and fixed to the base 1 through the positioning bolt 25. The above structural setting enables the negative high-voltage generator 22 to be better installed and fixed.

[0081] 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 opposite sides of the negative high-voltage generator 22, and the abutting positioning groove 12 is entirely located in the extending direction of the main body 31. The abutting force required is the greatest at the position where the negative high-voltage generator 22 is opposite to the light source generator 3. Therefore, arranging the abutting positioning groove 12 opposite to the light source generator 3 can better achieve the tight engagement between the light source generator 3 and the high-voltage generator.

[0082] The abutting positioning groove 12 is in the shape of a long strip as a whole and is extended 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.

[0083] In this embodiment, if Figure 14 and 15 As shown, the abutment and positioning member 101 includes a positioning support plate 1011 and an abutment member 1012. The positioning support plate 1011 is positioned in the abutment and positioning groove 12. The abutment member 1012 is mounted and fixed on the positioning support plate 1011 and 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 abutment member 1012 so that the abutment member 1012 can be tightly pressed against the negative high voltage generator 22.

[0084] After the positioning support plate 1011 is positioned and supported on the base 1 , a gap is provided between the positioning support plate 1011 and the negative electrode high voltage generator 22 .

[0085] Specifically, in order to better achieve the stability of the positioning support plate 1011, the ray source device also has a mounting plate 611 arranged on the negative high voltage generator 22 and the positive high voltage generator 21, and the mounting plate 611 is connected to the positive high voltage generator 21 and the negative high voltage generator 22; the mounting plate 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 plate 611 can also be used as a control unit 6 to fix the electronic control components in the control unit 6.

[0086] The mounting plate 611 is arranged on the side of the negative high voltage generator 22 away from the base 1, and 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, and 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 installed and fixed at the bottom of the negative high voltage generator 22, and the mounting plate 611 is correspondingly installed and fixed at the top of the negative high voltage generator 22.

[0087] A mounting plate groove is provided on the side of the lateral support portion 6111 facing the base 1, and the mounting plate groove is opposite to the abutment 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 and the abutment positioning groove 12; the two ends of the positioning support plate 1011 are respectively fixed on the mounting plate 611 and the base 1, thereby realizing the stable installation of the positioning support plate 1011.

[0088] 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 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 from the lateral direction, and the positioning support plate 1011 is slidably installed along the mounting plate groove and the abutment positioning groove 12 at the same time.

[0089] The positioning support plate 1011 is provided with a support plate through-hole, the abutment member 1012 includes an abutment flange and an extended abutment portion provided on the abutment flange, the abutment flange is fixed on the positioning support plate 1011, and the extended abutment portion penetrates the support plate through-hole and abuts against the negative high voltage generator 22;

[0090] The abutment flange is fixed on the side of the positioning support plate 1011 away from the negative high voltage generator 22 . The abutment flange is configured to limit the penetration of the support plate. The abutment flange is fixed on the positioning support plate 1011 to provide support for the abutment of the abutment portion against the negative high voltage generator 22 .

[0091] In this embodiment, the radiation source device further comprises an elastic member, which is compressed between the negative high voltage generator 22 and the abutment member; the abutment flange is fixed on the positioning support plate 1011 by bolts.

[0092] The elastic member may be a compression spring. Arranging the elastic member between the negative high voltage generator 22 and the abutment member can make the abutment force exerted by the abutment member on the negative high voltage generator 22 more flexible, thus avoiding the problem of excessive extrusion.

[0093] In other embodiments, the abutment and fixation of the negative high voltage generator can be achieved by other means. For example, when the abutment positioning member moves from the lateral opening of the positioning groove toward the other end of the abutment positioning groove 12, the abutment force between the abutment positioning member and the negative high voltage generator 2 gradually increases.

[0094] The above-mentioned structural arrangement of the abutment positioning member enables the abutment positioning member to be infinitely adjustable to meet different working conditions.

[0095] The abutting positioning member forms an abutting surface on one side facing the negative high voltage generator 22 , and the distance between the abutting surface and the negative high voltage generator 22 gradually decreases from the first end to the second end of the abutting surface; the abutting surface is an inclined surface as a whole.

[0096] In this embodiment, in order to more conveniently realize the positioning of 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 which is plugged into and matched with the positive positioning groove 14 is provided on the positive high voltage generator 21.

[0097] The positioning of the positive high-voltage generator 21 is facilitated by the cooperation of the positioning protrusion and the positive electrode positioning groove 14. After the positioning is completed, the positive high-voltage generator 21 is installed and fixed by bolts, which makes it more convenient to install and fix the positive high-voltage generator 21.

[0098] Furthermore, in order to better achieve the positioning effect, the entire positive electrode positioning groove 14 is located in the extending direction of the body 31.

[0099] The ray source device disclosed in this application is regarded as a whole module. In order to facilitate the transportation, picking, placing, disassembly of the ray source device, a handle 11 is provided on the base 1.

[0100] The ray source device also has an insulating washer 7 and an annular shielding portion 9 that are tightly pressed and 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 portion 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 portion 9 surrounding the insulating washer 7 forms a coverage on the side surface of the insulating washer 7 to reduce the risk of high-voltage creepage.

[0101] 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 portion 9 is arranged outside the insulating washer 7 to avoid the outward exposure of the insulating washer 7 and reduce the risk of high-voltage creepage problems.

[0102] In this embodiment, as Figure 7 shown, a plurality of wiring terminals 321 are provided on the power supply base 32; three wiring terminals are provided, and 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.

[0103] 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 the sealing setting with the ceramic tube 311.

[0104] 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 strike the tungsten target in the reaction chamber to generate X-rays. The generated X-rays are emitted outward through the ray exit 312 and are emitted to the item to be detected.

[0105] As Figures 1-9 shown, a pair of high-voltage generators 2 in this embodiment are a positive high-voltage generator 21 and a negative high-voltage generator 22 respectively. 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.

[0106] 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-ray, 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 ring-shaped shielding portion 9 is provided outside the insulating washer 7, which can effectively reduce the occurrence of the high-voltage creepage problem.

[0107] For the convenience of setting the ring-shaped shielding portion 9, in this embodiment, the ring-shaped shielding portion 9 is provided on the body 31, and a docking structure 23 adapted to the body 31 is provided on the high-voltage generator 2. The insulating washer 7 is pressed between the docking structure 23 and the body 31; a relief groove 233 adapted to the ring-shaped shielding portion 9 is provided on the docking structure 23;

[0108] After the insulating washer 7 is pressed and fixed, the ring-shaped shielding portion 9 is located in the relief groove 233.

[0109] The setting of the relief groove 233 can enable the ring-shaped 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 connection, 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.

[0110] In a specific embodiment, the ring-shaped shielding portion 9 is made of a metal material, such as stainless steel. Since the ring-shaped shielding portion 9 is a relatively hard material, if the ring-shaped shielding portion 9 is squeezed during the pressing process of the body 31, it is not only easy to generate deformation or rupture, but also affects the pressing effect of the insulating washer 7. The relief groove 233 provided on the docking structure 23 can effectively avoid the occurrence of the above problems.

[0111] The ring-shaped 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 a cylindrical ceramic tube as a whole. The ring-shaped shielding portion 9 is provided on the body 31 and encloses the 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.

[0112] After the insulating washer 7 is positioned, the insulating washer 7 does not protrude from the washer positioning groove 33 along 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 along 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.

[0113] 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.

[0114] 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 above thickness setting of the insulating washer 7 can better increase the creepage distance and thus avoid high-voltage leakage.

[0115] 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;

[0116] 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.

[0117] 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 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. In fact, the terminal support platform 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 platform 322 and the annular shielding portion 9, so that it can be more stable during the pressing process and will not be displaced.

[0118] 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 and the metal cover 34 covering the outside of the ceramic tube 311 are integrally formed. 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.

[0119] 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 delicate design, the setting of the annular shielding portion 9 is facilitated, making 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 dimension, so as to be able to position an insulating washer 7 with a larger size.

[0120] 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. Using a ceramic material for the body 31 has better insulation effect under high voltage compared with a glass material. Of course, in other embodiments, a glass material can also be used as the body 31.

[0121] 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.

[0122] It should be noted that in the above embodiment, 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 be able to form a sealed covering for the pressed insulating washer 7, and no further limitation is made on the specific structure setting.

[0123] A receiving groove 230 adapted to the body 31 is formed on one side of the docking structure 23 facing the body 31. After the installation is completed, the body 31 is positioned in the receiving groove 230;

[0124] The insulating washer 7 is pressed and positioned against the bottom of the accommodation groove 230; the avoidance groove 233 is recessed from the bottom of the accommodation groove 230 in a direction away from the opening of the accommodation groove 230.

[0125] 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 within the accommodation groove 230 of the docking structure 23. The arrangement of such a structure enables the docking structure 23 to form a certain wrapping and covering of the end of the body 31, thereby better achieving the sealing and shielding effect, reducing the occurrence of high-voltage creepage problems, and at the same time better positioning the insulating washer 7, avoiding the offset of the insulating washer 7 during the pressing process, and enabling the equipment to operate more stably.

[0126] The material of the docking structure 23 is lead yellow, which has a good shielding effect and can effectively reduce radiation. At the same time, the docking structure made of lead yellow material has insulation properties, and as an insulator, the docking structure can further effectively reduce the occurrence of high-voltage creepage problems.

[0127] 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 body 31.

[0128] A cavity is provided inside 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 within the cavity.

[0129] As Figures 10-13 shown, the docking structure 23 includes an insulating body 231 provided inside the generator housing and an annular mounting portion 232 provided on the insulating body 231. The accommodation groove 230 is provided on the insulating body 231, and the annular mounting portion 232 is located at the edge of the accommodation groove 230; the insulating body 231 is arranged in the cavity inside the corresponding generator housing.

[0130] 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.

[0131] The arrangement of the annular mounting portion 232 facilitates the installation and fixation of the docking structure 23 on the generator housing.

[0132] The insulating body 231 includes a receiving portion 2311, a transition portion 2312, and an extension portion 2313. The receiving groove 230 is provided in the receiving portion 2311. The transition portion 2312 extends in a direction away from the receiving groove 230 and has a transition portion through hole communicating with the receiving groove 230. The transition portion through hole has an inlet provided at the bottom of the receiving groove 230.

[0133] 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 length of extension without occupying too much space in one direction, thereby being more conducive to reducing the size of the device.

[0134] 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 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.

[0135] 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.

[0136] 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 lengths of the extension portion 2313 along the extending direction and 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.

[0137] As the distance from the receiving groove 230 increases, the outer diameter size of the transition portion 2312 gradually decreases; the transition portion 2312 is integrally 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.

[0138] In this embodiment, the receiving portion 2311, the transition portion 2312, and the extension 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 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.

[0139] As the extension portion 2313 is farther away from the transition portion 2312, the outer diameter dimension of the extension portion 2313 gradually shortens. An extension portion perforation communicating with the transition portion perforation is provided on the extension portion 2313.

[0140] The outer wall of the extension portion 2313 is curved; that is, the wall arranged in a curve encloses the extension portion 2313. Setting the extension portion 2313 to be curved can increase the degree of bending of the wall of the extension portion 2313 in the extension direction, so as to increase the creepage distance when high-voltage electricity climbs outward along the extension portion 2313, and further reduce the risk of creepage.

[0141] In this embodiment, as Figure 11 shown, the extension portion 2313 is integrally in a corrugated shape. The corrugated extension 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.

[0142] 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.

[0143] 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.

[0144] 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 arranged on the frame body. The detection device can be a security inspection device or a human body detection device.

[0145] 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, should still be within the protection scope of the present utility model as long as they do not exceed the spirit covered by the description and the drawings.

Claims

1. A ray source device, characterized in that: It includes a base, a pair of high-voltage generators disposed on the base and oppositely arranged, and a light source generator disposed between the pair of high-voltage generators; the pair of high-voltage generators are respectively a positive high-voltage generator and a negative high-voltage generator; The light source generator includes a body pressed between the positive high-voltage generator and the negative high-voltage generator, and a pair of power supply bases disposed on opposite sides of the body; The ray source device further has insulating washers disposed around the power supply bases, an insulating washer is disposed between the body and the positive high-voltage generator, and an insulating washer is also disposed between the body and the negative high-voltage generator.

2. The ray source device according to claim 1, wherein: The positive high-voltage generator and the negative high-voltage generator are arranged along the width direction of the base and form a gap space therebetween, and the ray source device further has a cooling system and / or transformer components and / or a control unit disposed in the gap space.

3. The ray source device according to claim 2, characterized in that: The positive high-voltage generator is provided with a positive plug on the side facing the negative high-voltage generator, and a negative plug on the side of the negative high-voltage generator facing the positive high-voltage generator.

4. The ray source device according to claim 3, wherein: The transformer components include a transformer box body fixed on at least one of the positive high-voltage generator and the negative high-voltage generator, a positive cable and a negative cable connected to the transformer box body; The ray source device further has a control unit, the control unit is electrically connected to the positive cable and the negative cable respectively, and the control unit is electrically connected to the positive plug and the negative plug respectively.

5. The ray source device according to claim 4, characterized in that: Both the positive high-voltage generator and the negative high-voltage generator have a generator housing, the transformer box body is fixed between the two generator housings, and the upper surface of the transformer box body is in the same plane as the upper surface of the generator housing.

6. The ray source device according to claim 2, wherein: The cooling system has an exchanger disposed in the gap space.

7. The ray source device according to claim 5, characterized in that: The control unit has a control unit housing, the control unit housing is connected and fixed to the pair of high-voltage generators respectively, and the control unit is fixed on the upper surfaces of the pair of high-voltage generators.

8. The ray source device according to claim 7, wherein: The control unit housing is fixedly disposed at a position opposite to the body; The control unit housing is fixed directly above the body; A handle is provided on the base.

9. The ray source device according to claim 8, wherein: Docking structures opposite to the body are provided on the generator housings, a receiving groove is formed on the side of the docking structure facing the body, the body is positioned in the receiving groove, and the insulating washer is pressed and disposed between the docking structure and the body; The insulating washer is pressed and positioned at the bottom of the receiving groove and disposed around the power supply base; The body includes a ceramic tube having a reaction cavity, a tungsten target disposed in the reaction cavity, and a ray outlet disposed on the ceramic tube; the ray outlet is integrally formed with the ceramic tube; The power supply base is disposed on the ceramic tube and extends into the reaction cavity, and the power supply base is hermetically disposed with the ceramic tube; On the side of the light source generator where the power supply base is provided, there is also a washer positioning groove, and the insulating washer is positioned in the washer positioning groove; the washer positioning groove is disposed around the power supply base; The power supply base is provided with a plurality of wiring terminals; There are three of the 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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