X-ray module and X-ray detection device with it

Abstract

This utility model discloses an X-ray module and an X-ray detection device having the same. The X-ray module includes: a housing; a voltage changing module extending along a first direction and disposed within a receiving cavity, the length of the voltage changing module in the first direction being not less than its width in a third direction, and the width of the voltage changing module in the third direction being not less than its height in a second direction, the first direction, the second direction, and the third direction being mutually perpendicular; an X-ray tube emitting X-rays along the second direction, the dimension of the X-ray tube in the second direction being smaller than the length of the voltage changing module in the first direction, and the dimension of the housing in the second direction being configured to accommodate at least the larger of the dimension of the voltage changing module in the second direction and the dimension of the X-ray tube in the second direction. By changing the arrangement between the X-ray tube and the voltage changing module, an ultra-thin X-ray source can be achieved, which is suitable for safety inspection of narrower areas such as the bottom of vehicles.

Description

Technical Field

[0001] This utility model belongs to the field of X-ray detection technology, specifically relating to an X-ray module and an X-ray detection device having the same. Background Technology

[0002] Backscatter imaging is a portable imaging method used in security applications. To achieve sufficiently deep penetration, the backscatter voltage typically needs to be 110kV or even higher than 140kV. When the voltage exceeds 140kV, the existing integrated structure design of the X-ray source can no longer meet the backscatter imaging requirements in spaces below 10cm (the height of the vehicle chassis from the ground) due to limitations in the size of the X-ray tube and the miniaturization of the high-voltage power supply. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide an X-ray module and an X-ray detection device having the same, so as to solve the problem in the prior art that X-ray modules are difficult to achieve backscatter imaging requirements at both high voltage and small detection height.

[0004] This utility model embodiment provides an X-ray module, including: A housing having a defined receiving cavity; A voltage changing module is disposed within the receiving cavity extending along a first direction. The length of the voltage changing module in the first direction is not less than its width in a third direction, and the width of the voltage changing module in the third direction is not less than its height in a second direction. The first direction, the second direction, and the third direction are mutually perpendicular. An X-ray tube, which is either a reflection X-ray tube or a transmission X-ray tube, is disposed within the receiving cavity and electrically connected to the voltage changing module. The X-ray tube emits X-rays along the second direction. The dimension of the X-ray tube in the second direction is smaller than the length of the voltage changing module in the first direction. The dimension of the housing in the second direction is configured to accommodate at least the larger of the dimension of the voltage changing module in the second direction and the dimension of the X-ray tube in the second direction. The electronic control module is fixed outside the housing and electrically connected to the voltage change module.

[0005] Furthermore, the voltage changing module includes: A circuit board is disposed within the receiving cavity, extending along the first direction; A transformer module is located on one side of the circuit board for electrical connection with the electronic control module; A positive high voltage module is provided on one side of the circuit board along the first direction and is electrically connected to the transformer module; A negative high-voltage module is provided on one side of the circuit board along the first direction and is electrically connected to the transformer module. The negative high-voltage module and the positive high-voltage module are arranged on the same plane.

[0006] Furthermore, the X-ray tube is a reflective X-ray tube, which extends along the third direction within the receiving cavity. The size of the housing in the second direction depends on the larger of the size of the voltage changing module in the second direction and the radial size of the reflective X-ray tube in the second direction.

[0007] Furthermore, the X-ray tube is a transmission X-ray tube, which extends along the second direction and is disposed within the receiving cavity. The size of the housing in the second direction depends on the larger of the size of the voltage changing module in the second direction and the axial size of the transmission X-ray tube in the second direction.

[0008] Furthermore, the positive high-voltage module is electrically connected to the anode of the X-ray tube, and the negative high-voltage module is electrically connected to the cathode of the X-ray tube.

[0009] Furthermore, the X-ray module also includes: A ground potential separator is provided between the positive high voltage module and the negative high voltage module for voltage equalization and isolation. A ground potential ring is fitted onto the X-ray tube and connected to the ground potential barrier for voltage equalization and isolation.

[0010] Furthermore, the X-ray tube is located between the positive high-voltage module and the negative high-voltage module; or, Located on the side of the positive high-voltage module away from the negative high-voltage module along the third direction; or, Located on the side of the negative high-voltage module away from the positive high-voltage module along the third direction; or, The X-ray tube is located at the end of the positive high-voltage module and the negative high-voltage module extending along the first direction, and this end is away from the electronic control module.

[0011] Furthermore, the cavity not occupied by the voltage change module and the X-ray tube is filled with potting compound.

[0012] The X-ray detection device according to a second aspect of the present invention includes the X-ray module described in the above embodiments.

[0013] By changing the arrangement between the X-ray tube and the voltage change module, the arrangement of the X-ray module can be made more compact, enabling an ultra-thin X-ray source. This significantly reduces the working height of the X-ray module, making it suitable for safety inspections in narrower areas such as the bottom of vehicles. Attached Figure Description

[0014] Figure 1 This is a side view of an X-ray module in the prior art; Figure 2 for Figure 1 Top view in the middle; Figure 3 This is a side view of an X-ray module (reflective X-ray tube) according to an embodiment of the present invention; Figure 4 for Figure 3 Top view in the middle; Figure 5 This is a side view of an X-ray module (transmission X-ray tube) according to an embodiment of the present invention; Figure 6 for Figure 5 Top view in the middle; Figure 7 for Figure 5 A schematic diagram showing the connection between the X-ray tube and the positive or negative high-voltage module.

[0015] Figure Labels

[0016] X-ray module 100; Casing 10; Voltage change module 20; Circuit board 21; Positive high voltage module 22; Negative high voltage module 23; Transformer module 24; X-ray tube 30; anode assembly 31; cathode assembly 32; 40; Electronic control module; 41; Control circuit; 42; Battery; Potting compound 50; Ground potential ring 60; Ground potential separator 61; Electron beam 70; X-ray 80. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0018] The terms "first," "second," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model can be implemented in orders other than those illustrated or described herein. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0019] X-ray module 1 in the prior art, such as Figure 1 and Figure 2 As shown, the X-ray tube 2 and the voltage changing module 3 (including the circuit board 4 and the back pressure module 5, etc.) are stacked along the thickness direction of the voltage changing module 3, i.e. Figure 1 and Figure 2 As shown, the X-ray tube 2 is stacked on top of the voltage change module 3. The X-ray tube 2 is a transmission type X-ray tube 2, which extends along the length direction parallel to the voltage change module 3. The X-ray emission direction is in the same direction as the length direction of the voltage change module 3. When inspecting locations such as the vehicle chassis, the working height h of the X-ray module 1 is the total height of the X-ray module 1 along the X-ray emission direction. This working height h generally includes the length of the voltage change module 3 (wherein, the dimension of the voltage change module 3 along its length direction is greater than the dimension of the X-ray tube 2 along this direction) and the length of the electronic control system 6. This arrangement is not conducive to safe inspection work in narrow spaces.

[0020] Based on the technical problems existing in the current technology, the following will combine... Figures 3 to 7 The X-ray module 100 provided in this utility model embodiment will be described in detail through specific embodiments and application scenarios.

[0021] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0022] According to an embodiment of the present invention, the X-ray module 100 includes a housing 10, a voltage change module 20, an X-ray tube 30, and an electronic control module 40.

[0023] Specifically, the housing 10 defines a receiving cavity; the voltage changing module 20 is positioned along a first direction (i.e., Figure 3 or Figure 5 The voltage changing module 20 is disposed within the receiving cavity extending in the X direction, and its length in the first direction is not less than its length in the third direction (i.e., Figure 3 or Figure 5 The width of the voltage changing module 20 in the Z direction is not less than its width in the second direction (i.e., the width in the Z direction). Figure 3 or Figure 5 The height in the Y direction (in the middle) means that the voltage changing module 30 has the smallest dimension in the second direction, wherein the first, second, and third directions are mutually perpendicular. The X-ray tube 30 is a reflective X-ray tube 30 or a transmission X-ray tube 30. The X-ray tube 30 is disposed in the receiving cavity and electrically connected to the voltage changing module 20. The X-ray tube 30 emits X-rays along the second direction. The dimension of the X-ray tube 30 in the second direction is smaller than the dimension of the voltage changing module 20 in the first direction. The dimension of the housing 10 in the second direction is configured to accommodate at least the larger of the dimension of the voltage changing module 20 in the second direction and the dimension of the X-ray tube 30 in the second direction. The electrical control module 40 is disposed outside the receiving cavity and electrically connected to the voltage changing module 20.

[0024] In other words, according to the X-ray module 100 of this utility model embodiment, the X-ray tube 30 is not stacked on the voltage changing module 20 along the thickness direction of the voltage changing module 20, and its working height H is not affected by the length of the voltage changing module 20. Assuming that the voltage changing module 20 extends along the first direction (X direction), the arrangement of the X-ray tube 30 is changed so that the direction in which the X-ray tube 30 emits X-rays 80 is the second direction (Y direction), such as... Figure 3 and Figure 5 As shown, since the size of the voltage changing module 20 in the first direction is much smaller than its size in the second direction, and the size of the voltage changing module 20 in the first direction is also smaller than the size of the X-ray tube 30 in the second direction, and since the X-ray tube 30 and the voltage changing module 20 are not stacked in the second direction, the height of the housing 10 in the second direction, i.e., the working height H, depends only on the size of the voltage changing module 20 or the size of the X-ray tube 30 in that direction. Therefore, the working height H of the X-ray module 100 according to this embodiment is much smaller than the working height h of the prior art X-ray module 100.

[0025] Therefore, by changing the arrangement between the X-ray tube 30 and the voltage change module 20, the arrangement of the voltage change module 20 and the X-ray tube 30 is made more compact, which can realize an ultra-thin X-ray source, greatly reduce the working height of the X-ray module 100, and make it suitable for safety inspection of narrower areas such as the bottom of vehicles.

[0026] According to one embodiment of the present invention, such as Figure 4 and Figure 6 As shown, the voltage transformation module 20 includes a circuit board 21, a positive high voltage module 22, a negative high voltage module 23, and a transformer module 24.

[0027] Specifically, circuit board 21 extends along a first direction and is disposed within the receiving cavity; transformer module 24 is disposed on one side surface of circuit board 21 for electrical connection with electrical control module 40; positive high voltage module 22 extends along the first direction and is disposed on one side surface of circuit board 21 and is electrically connected to transformer module 24; negative high voltage module 23 extends along the first direction and is disposed on one side surface of circuit board 21 and is electrically connected to transformer module 24, and negative high voltage module 23 and positive high voltage module 22 are arranged coplanarly.

[0028] In other words, since the positive high voltage module 22 and the negative high voltage module 23 need to maintain a safe distance from the housing 10, the positive high voltage module 22 and the negative high voltage module 23 are arranged in a coplanar manner. In addition, the coplanar arrangement can minimize the total thickness of the voltage change module 20 in the second direction, further realizing the miniaturization of the X-ray module 100.

[0029] According to one embodiment of the present invention, such as Figure 3 and Figure 4 As shown, the X-ray tube 30 is a reflective X-ray tube 30, and the reflective X-ray tube 30 is oriented along a third direction (i.e., Figure 3 The housing 10 extends in the Z direction and is disposed within the receiving cavity. The size of the housing 10 in the second direction depends on the larger of the size of the voltage changing module 20 in the second direction and the radial size of the reflective X-ray tube 30, wherein the third direction is the width direction of the voltage changing module 20.

[0030] Specifically, compared to existing structures, both the positive high-voltage module 22 and the negative high-voltage module 23 are arranged coplanarly with the reflective X-ray tube 30 (here, coplanar means roughly arranged in the same plane, not the traditional stacked arrangement). This significantly reduces the backscatter imaging working height H constraint value of the entire X-ray module 100 to the larger of the diameter of the X-ray tube assembly and the thickness of the voltage changing module 20, rather than depending on the length of the voltage changing module 20 or the height of the X-ray tube assembly. For the high-voltage reflective X-ray tube 30, the length is generally greater than the diameter, typically around twice or even more. Therefore, through this coplanar arrangement of the reflective X-ray tube 30 and the voltage changing module 20, the working height is significantly reduced compared to the X-ray source based on the transmission target X-ray tube in the prior art.

[0031] According to another embodiment of the present invention, such as Figures 5 to 7 As shown, the X-ray tube 30 is a transmission X-ray tube 30, and the transmission X-ray tube 30 is along the second direction (i.e. Figure 5 The housing 10 is provided in the receiving cavity in the Y direction, and the size of the housing 10 in the second direction depends on the larger of the size of the voltage changing module 20 in the second direction and the axial size of the transmission X-ray tube 30.

[0032] like Figure 5 As shown, by arranging the voltage changing module 20 and the X-ray tube 30 perpendicular to each other in two directions, the backscatter imaging working height H of the entire X-ray module 100 (i.e., the total height of the device along the X-ray 80 emission direction) is greatly shortened. The working height H depends on the larger of the height of the X-ray tube 30 and the thickness of the voltage changing module 20, rather than the sum of the length of the voltage changing module 20 and the length of the electronic control module 40. Figure 5 In the embodiment shown, the thickness of the voltage changing module 20 is much smaller than the length of the voltage changing module 20, and the length of the X-ray tube 30 is also smaller than the length of the voltage changing module 20.

[0033] Preferably, the ends of the positive high voltage module 22 and the negative high voltage module 23 circuits are connected to the anode assembly 31 and the cathode assembly 32 of the X-ray tube 30, respectively.

[0034] Specifically, the electronic control module 40 includes a control circuit 41 and a battery 42. In this embodiment of the invention, the battery 42 drives the control circuit 41 to operate. The control circuit 41 transmits the output analog signal to the transformer module 24, which further drives the back pressure modules (i.e., the positive high-voltage module 22 and the negative high-voltage module 23) to generate a high voltage, such as... Figure 7 As shown, the positive high voltage module 22 is connected to the anode assembly 31 of the X-ray tube 30 via wires, and the negative high voltage module 23 is connected to the cathode assembly 32 of the X-ray tube 30 via wires. The negative high voltage module 23 includes a negative high voltage circuit and a filament power supply. The common terminal of the filament power supply is connected to the end of the back voltage circuit, and the two output terminals of the filament power supply are connected to the cathode to drive the cathode to emit an electron beam 70. Under the drive of the positive and negative high voltages, the electron beam 70 bombards the target in the anode assembly 31 of the X-ray tube 30 to generate X-rays 80 for detection.

[0035] According to one embodiment of the present invention, the X-ray module 100 further includes a ground potential partition 61 and a ground potential ring 60.

[0036] The ground potential separator 61 is located between the positive high voltage module 22 and the negative high voltage module 23 for equalization and isolation; the ground potential ring 60 is sleeved on the X-ray tube 30 and connected to the ground potential separator 61 for equalization and isolation.

[0037] Specifically, a ground potential separator 61 is used between the positive and negative high-voltage modules 23 to achieve voltage equalization and isolation, thereby avoiding the risk of insulation breakdown between the positive and negative high-voltage modules in existing high-voltage modules. Due to the nonlinear effect of insulation breakdown, the probability of breakdown between the positive and negative high voltages and the ground potential caused by ground potential isolation is significantly reduced.

[0038] Furthermore, such as Figure 4As shown, a ground potential ring 60 is coaxially mounted on the outer side of the waist of the X-ray tube 30, and the ground potential ring 60 is connected to and supported by the ground potential partition 61. The voltage equalization design using the ground potential ring 60 can also significantly reduce the probability of breakdown between the anode and cathode of the X-ray tube 30 on the outer side.

[0039] Optionally, the X-ray tube 30 is located between the positive high-voltage module 22 and the negative high-voltage module 23 (not shown); or located on the side of the positive high-voltage module 22 away from the negative high-voltage module 23 along a third direction (not shown); or located on the side of the negative high-voltage module 23 away from the positive high-voltage module 22 along a third direction (not shown); or as shown Figures 3 to 6 As shown, the X-ray tube 30 is located at the end of the positive high voltage module 22 and the negative high voltage module 23 extending along the first direction, and this end is far away from the electronic control module 40.

[0040] In one embodiment of this utility model, the gaps in the housing 10 that are not occupied by structures such as the voltage change module 20 and the X-ray tube 30 are filled with potting compound 50 to provide insulation.

[0041] The X-ray detection device according to a second aspect of the present invention includes the X-ray module 100 described in any of the above embodiments.

[0042] Because the X-ray module 100 according to this embodiment of the present invention can achieve an ultra-thin X-ray source, the working height of the X-ray module 100 is greatly reduced, making it suitable for safety inspection of narrower areas such as the bottom of vehicles. Therefore, the X-ray inspection device according to this embodiment of the present invention also has the above-mentioned advantages.

[0043] Other structures and techniques of the X-ray detection device according to the embodiments of this utility model are prior art and will not be described in detail here.

[0044] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. An X-ray module, characterized in that, include: A housing having a receiving cavity defined within it; A voltage changing module is disposed within the receiving cavity extending along a first direction. The length of the voltage changing module in the first direction is not less than its width in a third direction, and the width of the voltage changing module in the third direction is not less than its height in a second direction. The first direction, the second direction, and the third direction are mutually perpendicular. An X-ray tube, which is either a reflection X-ray tube or a transmission X-ray tube, is disposed within the receiving cavity and electrically connected to the voltage changing module. The X-ray tube emits X-rays along the second direction. The dimension of the X-ray tube in the second direction is smaller than the length of the voltage changing module in the first direction. The dimension of the housing in the second direction is configured to accommodate at least the larger of the dimension of the voltage changing module in the second direction and the dimension of the X-ray tube in the second direction. The electronic control module is fixed outside the housing and electrically connected to the voltage change module.

2. The X-ray module according to claim 1, characterized in that, The voltage change module includes: A circuit board is disposed within the receiving cavity, extending along the first direction; A transformer module is located on one side of the circuit board for electrical connection with the electronic control module; A positive high voltage module is provided on one side of the circuit board along the first direction and is electrically connected to the transformer module; A negative high-voltage module is provided on one side of the circuit board along the first direction and is electrically connected to the transformer module. The negative high-voltage module and the positive high-voltage module are arranged on the same plane.

3. The X-ray module according to claim 2, characterized in that, The X-ray tube is a reflective X-ray tube, which extends along the third direction and is disposed within the receiving cavity. The size of the housing in the second direction depends on the larger of the size of the voltage changing module in the second direction and the radial size of the reflective X-ray tube in the second direction.

4. The X-ray module according to claim 2, characterized in that, The X-ray tube is a transmission X-ray tube, which is disposed in the receiving cavity extending along the second direction. The size of the housing in the second direction depends on the larger of the size of the voltage changing module in the second direction and the axial size of the transmission X-ray tube in the second direction.

5. The X-ray module according to claim 3 or 4, characterized in that, The positive high voltage module is electrically connected to the anode of the X-ray tube, and the negative high voltage module is electrically connected to the cathode of the X-ray tube.

6. The X-ray module according to claim 2, characterized in that, Also includes: A ground potential separator is provided between the positive high voltage module and the negative high voltage module for voltage equalization and isolation. A ground potential ring is fitted onto the X-ray tube and connected to the ground potential barrier for voltage equalization and isolation.

7. The X-ray module according to claim 3 or 4, characterized in that, The X-ray tube is located between the positive high-voltage module and the negative high-voltage module; or... Located on the side of the positive high-voltage module away from the negative high-voltage module along the third direction; or, Located on the side of the negative high-voltage module away from the positive high-voltage module along the third direction; or, Located at the end of the positive high voltage module and the negative high voltage module extending along the first direction, the end is away from the electronic control module.

8. The X-ray module according to claim 1, characterized in that, The cavity not occupied by the voltage change module and the X-ray tube is filled with potting compound.

9. An X-ray detection device, characterized in that, Includes the X-ray module according to any one of claims 1-8.

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