Cooling device, X-ray source with same and X-ray machine

Abstract

The invention relates to a cooling device, an X-ray source with the same and an X-ray machine, the X-ray source comprises a target seat, the device comprises a first cooling unit, the first cooling unit comprises an inlet hole, an outlet hole, a first liquid path and a second liquid path, the first liquid path comprises a first liquid path channel and a second liquid path channel, the inlet hole is formed in the second liquid path channel, and the outlet hole is formed in the second liquid path channel; the inlet hole is formed in the outer wall, the outlet hole is formed in the first liquid path channel, the first liquid path is communicated with the second liquid path, the target seat is detachably connected with the outer wall, the inlet hole, the second liquid path channel, the second liquid path, the first liquid path channel and the outlet hole form a flow channel through which cold fluid flows, the X-ray source comprises a cooling device, and the X-ray machine comprises an X-ray source. The first cooling unit is movably connected with the target seat, so that the convenience of mounting the X-ray source in a narrow mounting space is enhanced, and the X-ray source can be mounted in a smaller mounting space.

Description

Technical Field

[0001] The present invention relates to the technical field of X-ray machines, and in particular to a cooling device, an X-ray source with the device, and an X-ray machine. Background Art

[0002] Since the vigorous development of X-ray digital imaging live detection of power equipment, it has not only realized the live detection of power equipment defects, but also the accuracy and reliability of its detection results have been fully verified and recognized. For GIS equipment, X-ray digital imaging technology can detect defects such as foreign matter, loose bolts and broken fasteners inside GIS equipment, and realize preventive and accurate inspection of structural defects of GIS and other power equipment and accurate analysis of emergency defects, which can effectively improve the scientificity and effectiveness of GIS equipment maintenance.

[0003] In the practice of applying X-ray digital imaging to power equipment detection, there are still some problems due to the limitations of detection conditions. For example, the radiation source used in the prior art is large in size, while the spatial structure of the GIS equipment is compact, which leads to the possibility of not having a suitable shooting angle and detection position, making it difficult to shoot the three-station structure, B-phase structure and other positions. Detecting the operating status of GIS equipment has always been an important research content for the safe operation of substations. In the detection of the operating status of GIS equipment, with the widespread application of X-ray digital imaging technology, the applicability of X-ray digital imaging technology to each detection position, the accuracy and reliability of the detection results will become an important measure for the upgrade of this technology.

[0004] In the prior art, when X-ray digital imaging technology is used for live detection of power equipment, for common power equipment, generally good image quality can be obtained in 1-10 seconds, so the single working cycle of the X-ray source is short. X-ray equipment usually used in this field adopts natural cooling. With the improvement of the automation level of X-ray equipment, for example, after completing the imaging of the image at the previous position, the X-ray equipment can quickly adjust the relative position or angle between the X-ray source and the imaging plate. If the X-ray source is not cooled to the required temperature by natural cooling within this interval, there is a long waiting time, which is not conducive to the inspection efficiency of the power equipment. If the heat dissipation during the exposure time is reduced by reducing the tube voltage and shortening the imaging time, the performance of the X-ray source will be affected. In order to solve the problem of cooling efficiency, the prior art introduces cold fluid into the X-ray tube to achieve the effect of forced cooling of the X-ray source.

[0005] The invention patent with publication number CN102598197A discloses an X-ray tube, including a cathode, an anode target emitting X-rays, a vacuum tube shell and a cooling structure, wherein the cooling structure is used to cool the heat generated at the anode target, and the cooling structure is used to cool the heat generated at the cathode via a ceramic component, a second metal component, a heat transfer medium, an adapter and a first metal component; the cooling structure of the patent is simple and has low heat dissipation efficiency, and the cooling structure cannot be selected and installed according to the installation environment.

[0006] Therefore, providing a cooling device with high heat dissipation efficiency when dissipating heat from X-rays is an issue that needs to be urgently addressed. Summary of the invention

[0007] The purpose of the present invention is to provide a cooling device, an X-ray source and an X-ray machine with the device in order to overcome the defects of the prior art.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] According to a first aspect of the present invention, there is provided a cooling device for an X-ray machine, the device being used for cooling an X-ray source of the X-ray machine by using a cold fluid, the X-ray source comprising a target seat, the device comprising a first cooling unit, the first cooling unit comprising an inlet hole, an outlet hole, a first liquid path and a second liquid path, the first liquid path comprising a first liquid path channel and a second liquid path channel, the inlet hole being mounted on the second liquid path channel, the outlet hole being mounted on the first liquid path channel, the first liquid path and the second liquid path being connected, the target seat and the outer wall being detachably connected, the inlet hole, the second liquid path channel, the second liquid path, the first liquid path channel and the outlet hole forming a flow channel through which the cold fluid flows.

[0010] As a preferred technical solution, the first cooling unit also includes an outer wall, an inner wall, a central tube, a first end plate and a second end plate, the first end plate is respectively installed on the outer wall, the inner wall and the central tube, the second end plate is respectively installed on the inner wall and the central tube, the second end plate and the central tube are connected, the outlet hole is installed on the outer wall and connected, the inlet hole is installed on the first end plate and connected to the central tube, the outer wall and the inner wall form a partition cavity, and the second end plate and the target seat form a first cavity.

[0011] As a preferred technical solution, the first end plate and the second end plate are both annular, the center tube has a built-in center hole, the first liquid path channel is a partition cavity, the second liquid path channel is a center hole, and the second liquid path is a groove on the target seat or a first cavity.

[0012] As a preferred technical solution, the target seat and the outer wall are threadedly connected via internal threads and external threads.

[0013] As a preferred technical solution, the outer wall and the inner wall are both cylindrical, and the central tube is installed in the inner wall.

[0014] As a preferred technical solution, the device further comprises an isolation block, and the isolation block is installed in the partition wall cavity.

[0015] As a preferred technical solution, the device further comprises a groove, and the groove is installed on the target seat.

[0016] As a preferred technical solution, the device also includes a circulation pipe, a second cooling unit, a storage tank, a shut-off valve, a pressure-stabilizing tank and a circulation pump, and the outlet hole, the second cooling unit, the storage tank, the circulation pump, the pressure-stabilizing tank, the shut-off valve and the inlet hole are connected in sequence through the circulation pipe.

[0017] According to a second aspect of the present invention, there is provided an X-ray source, comprising a cooling device as described above, and further comprising a cathode, an anode target and a vacuum wall, wherein the target seat and the vacuum wall form a vacuum chamber, wherein the cathode and the anode target are both installed in the vacuum chamber, wherein the anode target is installed on the target seat, and wherein the cathode, the anode target, the vacuum wall and the target seat form an X-ray tube.

[0018] According to a third aspect of the present invention, there is provided an X-ray machine, comprising an X-ray source as described above, and further comprising a control box, a high voltage generator and a flexible cable, wherein the high voltage generator is respectively connected to the X-ray source and the control box via a flexible cable.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention flexibly connects the first cooling unit and the target base. When the space for installing the X-ray machine is small, the first cooling unit can be removed to reduce the demand for the installation space of the X-ray source, thereby improving the adaptability of the X-ray source to the narrow space. At the same time, the X-ray tube can be installed first, and then the first cooling unit can be installed on the target base. This not only enhances the convenience of installing the X-ray source in a narrow installation space, but also enables the X-ray source to be installed in a smaller installation space compared to the overall installation method.

[0021] 2. The present invention forms a cold fluid pipeline connected to the second liquid circuit, so that the corresponding heat can be efficiently discharged by the cold fluid. From the perspective of ensuring heat dissipation efficiency, the X-ray machine is made more compact and lightweight by avoiding the huge cooling structure required for traditional natural cooling.

[0022] 3. The present invention provides grooves on the target seat, and utilizes the grooves to increase the contact area between the cold fluid and the target seat. The extension form of the grooves can be used to limit the cold fluid to flow along the grooves, so as to ensure the contact quality between the cold fluid and the target seat 2.

[0023] 4. The present invention also provides a second cooling unit, which is used to cool the cold fluid in the circulation pipe, thereby achieving a better heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a cross-sectional schematic diagram of a first cooling unit of the present invention;

[0026] Figure 3 It is a partial enlarged view of point A of the present invention;

[0027] Figure 4 It is a schematic diagram of the cold fluid circulation of the present invention.

[0028] 1. Vacuum wall; 2. Target holder; 3. Anode target; 4. Outer wall; 5. Partition cavity; 6. Inner wall; 7. Central tube; 8. Exit hole; 9. Entrance hole; 10. Ray window; 11. First cooling unit; 12. Cathode; 13. First power supply; 14. Second power supply; 15. Circulation pipe; 16. Second cooling unit; 17. Storage box; 18. Shut-off valve; 19. Pressure regulating tank; 20. Circulation pump; 21. Sealing ring; 22. Isolation block; 23. Vacuum cavity; 24. First end plate; 25. Second end plate; 26. Central hole; 27. Groove; A. Enlarged position. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] Since the vigorous development of X-ray digital imaging live detection of power equipment, it has not only realized the live detection of power equipment defects, but also the accuracy and reliability of its detection results have been fully verified and recognized. For GIS equipment, X-ray digital imaging technology can detect defects such as foreign matter, loose bolts and broken fasteners inside GIS equipment, and realize preventive and accurate inspection of structural defects of GIS and other power equipment and accurate analysis of emergency defects, which can effectively improve the scientificity and effectiveness of GIS equipment maintenance.

[0031] In the practice of applying X-ray digital imaging to power equipment detection, there are still some problems due to the limitations of detection conditions. For example, the radiation source used in the prior art is large in size, while the spatial structure of the GIS equipment is compact, which leads to the possibility of not having a suitable shooting angle and detection position, making it difficult to shoot the three-station structure, B-phase structure and other positions. Detecting the operating status of GIS equipment has always been an important research content for the safe operation of substations. In the detection of the operating status of GIS equipment, with the widespread application of X-ray digital imaging technology, the applicability of X-ray digital imaging technology to each detection position, the accuracy and reliability of the detection results will become an important measure for the upgrade of this technology.

[0032] Traditional X-ray machines used for flaw detection can achieve long-term continuous beam emission, but such X-ray machines are large in size and cannot enter narrow spaces, so traditional X-ray machines cannot meet the needs of power equipment inspection well; in addition, after investigation, there are X-ray machines in the prior art that are used to enter pipelines to perform X-ray flaw detection on pipeline welds, but the X-ray energy of such X-ray machines is low (generally a tube voltage of 120kV), and cannot be used for the inspection of thick equipment such as power equipment.

[0033] In order to improve the adaptability of X-ray digital imaging equipment to live detection of power equipment, it is necessary to further optimize the relevant technologies.

[0034] The present invention provides a cooling device, an X-ray source with the device, and an X-ray machine; the present invention flexibly connects a first cooling unit and a target seat, and when the space for installing the X-ray machine is small, the first cooling unit is removed to reduce the demand for the installation space of the X-ray source, thereby improving the adaptability of the X-ray source to the narrow space; at the same time, the X-ray tube can be installed first, and then the first cooling unit can be installed on the target seat, which not only enhances the convenience of installing the X-ray source in a narrow installation space, but also enables the X-ray source to be installed in a smaller installation space relative to the overall installation method. The present invention forms a cold fluid pipeline connected to the second liquid circuit, so that the corresponding heat can be efficiently derived by the cold fluid. From the perspective of ensuring heat dissipation efficiency, the X-ray machine is made smaller and lighter by avoiding the use of the bulky cooling structure required by traditional natural cooling. The present invention provides a groove on the target seat, and the groove is used to increase the contact area between the cold fluid and the target seat. The extension form of the groove can be used to limit the cold fluid to flow along the groove, so as to ensure the contact quality between the cold fluid and the target seat 2. The present invention also provides a second cooling unit, which is used to cool the cold fluid in the circulation pipe, thereby achieving a better heat dissipation effect.

[0035] Example 1

[0036] like Figure 1-Figure 4As shown, a cooling device of an X-ray machine is used for cooling an X-ray source of the X-ray machine by using a cold fluid. The X-ray source includes a target seat 2, and the device includes a first cooling unit 11. The first cooling unit 11 includes an inlet hole 9, an outlet hole 8, a first liquid path and a second liquid path. The first liquid path includes a first liquid path channel and a second liquid path channel. The inlet hole 9 is installed on the second liquid path channel, and the outlet hole 8 is installed on the first liquid path channel. The first liquid path and the second liquid path are connected. The target seat 2 and the outer wall 4 are detachably connected. The inlet hole 9, the second liquid path channel, the second liquid path, the first liquid path channel and the outlet hole 8 form a flow channel through which the cold fluid flows.

[0037] The first cooling unit 11 also includes an outer wall 4, an inner wall 6, a central tube 7, a first end plate 24 and a second end plate 25. The first end plate 24 is respectively mounted on the outer wall 4, the inner wall 6 and the central tube 7. The second end plate 25 is respectively mounted on the inner wall 6 and the central tube 7. The second end plate 25 is connected to the central tube 7. The outlet hole 8 is mounted on the outer wall 4 and connected. The inlet hole 9 is mounted on the first end plate 24 and connected to the central tube 7. The outer wall 4 and the inner wall 6 form a partition wall cavity 5. The second end plate 25 and the target base 2 form a first cavity.

[0038] The first end plate 24 and the second end plate 25 are both annular, the center tube 7 has a built-in center hole 26, the first liquid path channel is the partition cavity 5, the second liquid path channel is the center hole 26, and the second liquid path is a groove on the target base 2 or the first cavity.

[0039] The target base 2 and the outer wall 4 are threadedly connected by internal threads and external threads. The target base 2 is provided with a threaded hole, the threaded hole is an internal thread, and the outer wall 4 is provided with an external thread.

[0040] The outer wall 4 and the inner wall 6 are both cylindrical, and the central tube 7 is installed in the inner wall 6 ; the device also includes an isolation block 22 , and the isolation block 22 is installed in the partition cavity 5 .

[0041] The device further comprises a groove 27 , which is mounted on the target holder 2 .

[0042] The device also includes a circulation pipe 15, a second cooling unit 16, a storage tank 17, a shut-off valve 18, a pressure-stabilizing tank 19 and a circulation pump 20, and the outlet hole 8, the second cooling unit 16, the storage tank 17, the circulation pump 20, the pressure-stabilizing tank 19, the shut-off valve 18 and the inlet hole 9 are connected in sequence through the circulation pipe 15.

[0043] In this embodiment, the device further comprises a first cooling unit 11 detachably connected to the outer side of the target base 2, the first cooling unit 11 is provided with an inlet hole 9 for introducing a cold fluid, an outlet hole 8 for conducting a cold fluid, and the first cooling unit 11 is provided with a first liquid path;

[0044] It also includes a second liquid circuit, which is located on the target base 2 or between the first cooling unit 11 and the target base 2. When the first cooling unit 11 is installed on the target base 2, the inlet hole 9 and the outlet hole 8 are connected to the second liquid circuit through the first liquid circuit.

[0045] In the prior art, when X-ray digital imaging technology is used for live detection of power equipment, for common power equipment, generally good image quality can be obtained in 1-10 seconds, so the single working cycle of the X-ray source is short. X-ray equipment usually used in this field adopts natural cooling. With the improvement of the automation degree of X-ray equipment, for example, after completing the imaging of the image at the previous position, the X-ray equipment can quickly adjust the relative position or angle between the X-ray source and the imaging plate. If the X-ray source is not cooled to the required temperature by natural cooling within the interval, there is a long waiting time, which is not conducive to the inspection efficiency of the power equipment. If the heat dissipation during the exposure time is reduced by reducing the tube voltage and shortening the imaging time, the performance of the X-ray source will be affected. In view of the problem of cooling efficiency, these solutions in the prior art introduce cold fluid into the X-ray tube to achieve the effect of forced cooling of the X-ray source. This solution is based on the forced cooling method of the X-ray source and provides a technical solution that is beneficial to the miniaturization design of the X-ray machine.

[0046] Different from the prior art used for X-ray detection of power equipment, the first cooling unit 11 in this solution serves as a cooling device connected to the X-ray tube. By forming a cold fluid pipeline connected to the second liquid circuit, the corresponding heat can be efficiently discharged by the cold fluid. From the perspective of ensuring heat dissipation efficiency, this solution is beneficial to the miniaturization and lightweight design of the X-ray machine by avoiding the huge cooling structure required for traditional natural cooling.

[0047] Different from the prior art used for X-ray detection of power equipment, the present solution is configured such that the first cooling unit 11 is detachably connected to the target holder 2. On the one hand, when the space for installing the X-ray machine around the power equipment is small, the first cooling unit 11 is removed to reduce the demand for the installation space of the X-ray source, thereby improving the adaptability of the X-ray source to the narrow space, so that the present X-ray source has the characteristic of adapting to the narrow installation space. On the other hand, during the process of installing the present X-ray source in the installation space, if the installation space allows the first cooling unit 11 to be assembled on the target holder 2, a method such as first completing the installation of the X-ray tube in the installation space and then installing the first cooling unit 11 on the target holder 2 can be adopted. Under such an operating method, not only the convenience of installing the X-ray source in a narrow installation space is enhanced, but also compared with the overall installation method, the present solution can also install the X-ray source in a smaller installation space.

[0048] It is easy to understand that for particularly narrow installation space, when the installation space does not allow the first cooling unit 11 to be connected to the X-ray source, in order to avoid overheating of the X-ray tube, a solution of reducing the exposure time, reducing the exposure amount or extending the interval between two operations can be adopted. This solution is not good for image quality and detection efficiency, but compared with traditional larger X-ray sources with cooling devices, this X-ray source can still provide the necessary structural basis for implementing X-ray digital imaging technology when dealing with such a detection environment.

[0049] Regarding the specific implementation method of the second liquid circuit, when the second liquid circuit is located on the target base 2, that is, the second liquid circuit is formed on the target base 2, such as a channel on the target base 2; when the second liquid circuit is located between the first cooling unit 11 and the target base 2, that is, the second liquid circuit is surrounded by the target base 2 and the first cooling unit 11, such as a cavity between the target base 2 and the first cooling unit 11.

[0050] In summary, the present solution includes the following application modes: during the use of the X-ray source, the first cooling unit 11 is used as a cooling device connected to the X-ray tube, and the heat generated by the X-ray tube is conducted away by the cold fluid in the cold fluid pipeline by forming a cold fluid pipeline connecting the first liquid circuit and the second liquid circuit, wherein the first liquid circuit and the second liquid circuit are connected in series to the cold fluid pipeline;

[0051] When the space around the power equipment for installing the X-ray machine is not large enough for the first cooling unit 11, the first cooling unit 11 is removed to reduce the installation space requirement of the X-ray source;

[0052] When the first cooling unit 11 is used, during the process of installing the X-ray source in the installation space, the X-ray tube is first installed in the installation space, and then the first cooling unit 11 is installed on the target base 2.

[0053] Example 2

[0054] In this embodiment, the embodiment 1 is further refined, the first cooling unit 11 includes a cylindrical outer wall 4 and a cylindrical inner wall 6, the inner wall 6 is arranged on the inner side of the outer wall 4 and is spaced apart from the outer wall 4, and a partition cavity 5 is formed between the inner wall 6 and the outer wall 4; the first cooling unit 11 also includes a central tube 7, and the central tube 7 is coaxial with the outer wall 4;

[0055] A second end plate 25 is provided at one end of the outer wall 4. The second end plate 25 is an annular structure embedded in the gap between the central tube 7 and the inner wall 6. The outer side of the second end plate 25 is fixedly connected to the inner surface of the inner wall 6, and the inner side of the second end plate 25 is fixedly connected to the outer surface of the central tube 7. The outer side of the outer end of the outer wall 4 is provided with a connecting thread which is an external thread.

[0056] A first end plate 24 is provided at the other end of the outer wall 4, and the central tube 7, the outer wall 4 and the inner wall 6 are all fixed on the second end plate 25. The second end plate 25 closes the gap between the outer wall 4 and the inner wall 6 and the gap between the inner wall 6 and the central tube 7. The outlet hole 8 is located on the outer wall 4 of this end, and the outlet hole 8 is communicated with the partition cavity 5. The inlet hole 9 is provided on the first end plate 24, and the inlet hole 9 is communicated with the central hole 26 of the central tube 7; a threaded hole is provided on the outer side of the target base 2, and a connecting thread as an internal thread is provided in the threaded hole; the target base 2 and the first cooling unit 11 form a threaded connection relationship through the external thread and the internal thread.

[0057] The above scheme provides an integrated first cooling unit 11, which has the characteristics of being easy to install and disassemble on the target base 2, specifically: the inner wall 6 is used as an inner layer of the outer wall 4 and forms a partition cavity 5 between the two, and the partition cavity 5 is used as a flow channel for the cold fluid to flow out of the first cooling unit 11, the central pipe 7 is a pipe in the center of the outer wall 4, and its central hole 26 is used as a flow channel for the cold fluid to flow into the first cooling unit 11, the second end plate 25 is used as a sealing plate to close the cavity of one end of the first cooling unit 11 connected to the target base 2, and the first end plate 24 is used as the outer end of the first cooling unit 11, completing the outer wall 4, the inner wall 6, and the central pipe 7. The core tube 7 is relatively fixed to the plate body. After the outer wall 4 completes the connection of the first cooling unit 11 on the target seat 2 through the external thread thereon, the cold fluid entering through the inlet hole 9 and the center hole 26 flows through the second liquid path and absorbs the heat on the target seat 2. The cold fluid that completes the heat absorption further passes through the partition cavity 5 and the outlet hole 8 and is discharged from the first cooling unit 11. Therefore, this solution integrates the liquid inlet channel and the liquid outlet channel on the first cooling unit 11 into one. It is only necessary to screw the outer wall 4 into the threaded hole or screw out the outer wall 4 to complete the installation or removal of the first cooling unit 11 on the target seat 2. At the same time, such a connection structure is convenient to operate and has a simple structure. In this solution, when the second end plate 25 is installed to be spaced from the bottom of the threaded hole, the cold fluid passes through the center tube 7 and enters the cavity between the second end plate 25 and the bottom of the hole, and then flows to each side to flow to the partition cavity 5. Therefore, this solution can form a larger forced cooling surface area on the target seat 2, and at the same time has a relatively uniform cooling capacity for all directions and positions of the cooling surface. In this solution, when the cooling surface area is relatively large, and the center tube 7, the outer wall 4, and the inner wall 6 are all set as thin shell structures in consideration of the weight of the first cooling unit 11, the second end plate 25 can effectively prevent the cold fluid from entering the cavity between the inner wall 6 and the center tube 7 or reduce the amount of cold fluid entering the cavity, so that the cold fluid entering the first cooling unit 11 can be forced to stay in the second liquid path to participate in cooling the target seat 2, especially in the intermittent use of the first cooling unit 11 when the cold fluid is not introduced into the second liquid path during the exposure time of the X-ray source and the cold fluid is introduced into the second liquid path during the non-exposure time, it can be avoided that the cold fluid fills the inner space of the inner wall 6, resulting in an increase in the invalid cooling time and a reduction in the detection efficiency of the power equipment. Therefore, this solution is beneficial to the lightweight design of the first cooling unit 11 and the reliability of the cooling effect. In this solution, the first end plate 24 not only plays a relative fixing role of different components, but also serves as a boundary of the upper flow channel of the first cooling unit 11 to prevent the cold fluid from spilling out and affecting the safety of the operation of the power equipment.

[0058] Example 3

[0059] In this embodiment, the embodiment 2 is further refined: the first cooling unit 11 is a tubular structure with a diameter at one end larger than that at the other end; the end of the first cooling unit 11 connected to the target base 2 is the large end of the first cooling unit 11; the end of the first cooling unit 11 provided with the outlet hole 8 and the inlet hole 9 is the small end of the first cooling unit 11;

[0060] An isolation block 22 is also provided between the outer wall 4 and the inner wall 6, and the isolation block 22 is clamped in the partition cavity 5. In this solution, the end with a larger diameter of the first cooling unit 11 is connected to the target seat 2, and when the second liquid path is used as the cavity between the second end plate 25 and the bottom of the threaded hole, the heat dissipation area of ​​the target seat 2 under the action of the cold fluid is enlarged to ensure the cooling efficiency of the target seat 2. The end with a smaller diameter of the first cooling unit 11 is used as the end of the first cooling unit 11 connected to the circulation pipe 15. The outer shape design of the first cooling unit 11 as a large and small head structure is beneficial to reducing the weight and volume of the first cooling unit 11. The isolation block 22 is used as an intermediate structure between the outer wall 4 and the inner wall 6 to maintain the relative position between the outer wall 4 and the inner wall 6. By maintaining the shape of the partition cavity 5, the first cooling unit 11 has a stable cooling capacity for the target seat 2 in all directions.

[0061] Example 4

[0062] In this embodiment, the embodiment 2 is further refined:

[0063] The threaded hole is provided with a positioning step for limiting the screwing depth of the outer wall 4 in the threaded hole, and also includes a sealing ring 21, which serves as a sealing gasket between the threaded hole and the first cooling unit 11: when the outer wall 4 is screwed into the threaded hole until it contacts the positioning step, the sealing ring 21 is clamped between the bottom of the threaded hole and the end face of the outer wall 4 and generates elastic deformation;

[0064] The sealing ring 21 is fixed on the end face of the outer wall 4. In this solution, the positioning step is used to limit the depth of the outer wall 4 screwed into the threaded hole to prompt the operator whether the first cooling unit 11 is installed in place on the target seat 2. The sealing gasket isolates the cold fluid to prevent the cold fluid from leaking through the gap between the outer wall 4 and the threaded hole, thereby ensuring the operating safety of the power equipment during the detection process. The sealing ring 21 is fixed on the end face of the outer wall 4, so that the sealing ring 21 is always located on the end face of the outer wall 4, which can prevent the sealing ring 21 from being lost during use and missing installation when installing the first cooling unit 11.

[0065] Example 5

[0066] In this embodiment, the embodiment 1 is further refined:

[0067] The device further comprises a circulation pipe 15 for realizing the circulation of the cold fluid, and the first cooling unit 11 is connected in series to the circulation pipe 15 through the inlet hole 9 and the outlet hole 8;

[0068] The device further comprises a circulation pump 20 and a second cooling unit 16 connected in series to the circulation pipe 15, wherein the second cooling unit 16 is used to cool the cold fluid in the circulation pipe 15;

[0069] The pipe sections on the circulation pipe 15 used to connect with the inlet hole 9 and the outlet hole 8 are all flexible pipe sections, and the inlet hole 9 and the outlet hole 8 are connected to the flexible pipe sections through detachable joints. In this solution, the circulation pump 20 is used as a power source for realizing the circulation of the cold fluid on the circulation pipe 15, and the second cooling unit 16 can be an air-cooled heat exchanger for cooling the cold fluid derived from the first cooling unit 11. In this solution, it is set to complete the connection between the circulation pipe 15 and the inlet hole 9 and the outlet hole 8 through the flexible pipe section on the circulation pipe 15, in order to utilize the characteristic that the flexible pipe section can produce deformation, so as to facilitate the application of the X-ray source to a narrow installation space, and the inlet hole 9 and the outlet hole 8 are connected to the flexible pipe section through a detachable joint, in order to utilize the step-by-step installation method that can first complete the installation of the first cooling unit 11 in a narrow space and then connect the circulation pipe 15 to the first cooling unit 11, so as to improve the convenience of installing the X-ray source in a narrow space and improve the adaptability of the solution to narrow spaces.

[0070] Example 6

[0071] In this embodiment, the embodiment 5 is further refined:

[0072] The device also includes a pressure-stabilizing tank 19 and a shut-off valve 18 connected in series to the circulation pipe 15, wherein the pressure-stabilizing tank 19 is located at the outlet end of the circulation pump 20, the shut-off valve 18 is located at the outlet end of the pressure-stabilizing tank 19, and the inlet hole 9 is located at the outlet end of the shut-off valve 18; and also includes a storage box 17 connected in series to the circulation pipe 15, wherein the storage box 17 serves as a cold fluid storage device between the second cooling unit 16 and the circulation pump 20. In this solution, the storage box 17 is a normal pressure container for storing cold fluid such as cooling oil. The circulating pump 20 extracts the cold fluid in the storage box 17 and injects it into the pressure-stabilizing tank 19. The pressure-stabilizing tank 19 is a closed container, and the gas is stored at the upper end and the cold fluid is stored at the lower end. The structural characteristics and usage characteristics of the pressure-stabilizing tank 19 are utilized. In the process of the circulating pump 20 injecting the cold fluid into the pressure-stabilizing tank 19, the pressure-stabilizing tank 19 is pressurized and maintained after the pressure is increased. The shut-off valve 18 is used to control the on-off state of the pressure-stabilizing tank 19 and the inlet hole 9, so that before the X-ray source is exposed, the shut-off valve 18 is adjusted to the shut-off state to avoid the anode target 3 vibrating due to the cold fluid acting on the target seat 2 during the process. The unstable vibration factor causes X-ray intensity fluctuations, X-ray direction deviations, etc. In the exposure gap of the X-ray source, the shut-off valve 18 is adjusted to the on state to utilize the pressure in the pressure-stabilizing tank 19 to inject the cold fluid into contact with the heat dissipation surface on the target seat 2, so as to realize forced cooling of the target seat 2. In this solution, by being configured with the storage box 17 and the pressure-stabilizing tank 19, the shut-off valve 18 that may exist during the X-ray detection of the power equipment needs to repeatedly perform the shut-off and conduction operations for a short period of time, which can not only reduce the number of starts of the circulation pump 20, but also ensure the quality of the cold fluid provided to the target seat 2 at a single time when the pressure in the pressure-stabilizing tank 19 is maintained within the set range.

[0073] Example 7

[0074] In this embodiment, the embodiment 6 is further refined:

[0075] The cut-off valve 18 is provided with an electric actuator for adjusting the on / off state of the cut-off valve 18; and also includes a control module for executing control instructions, wherein the control instructions include an exposure time instruction of the X-ray source and an on / off state instruction of the cut-off valve 18;

[0076] The control module is configured as follows: the control module adjusts the cut-off valve 18 to the cut-off state through the electric actuator before the X-ray source is exposed; the control module executes the exposure time instruction and the cut-off valve 18 is in the cut-off state during the exposure of the X-ray source. In this solution, the cut-off valve 18 can be manually operated, or the cut-off valve 18 can be set as an automatic valve. In order to improve the efficiency of power equipment detection and improve the radiation safety of personnel, it is preferred to set the cut-off valve 18 as an automatic valve. On this basis, the cut-off valve 18 is equipped with an electric actuator with a simple structure, and under the action of the control module, the cut-off valve 18 is automatically controlled in the on and off state.

[0077] Example 8

[0078] In this embodiment, the embodiment 1 is further refined:

[0079] The first liquid path includes a first liquid path channel and a second liquid path channel, the outlet hole 8 is used as a pipe opening at one end of the first liquid path channel, and the inlet hole 9 is used as a pipe opening at one end of the second liquid path channel;

[0080] The second liquid path is used to realize the connection between the pipe opening at the other end of the first liquid path channel and the pipe opening at the other end of the second liquid path channel;

[0081] The target holder 2 also includes a groove 27, which is located on the side wall of the second liquid path, and the groove 27 extends from the nozzle position at the other end of the first liquid path channel to the nozzle position at the other end of the second liquid path channel. In this solution, one implementation of the first liquid path channel is the partition cavity 5 as described above, and one implementation of the second liquid path channel is the center hole 26 as described above. In this solution, the groove 27 is provided to increase the contact area between the cold fluid and the target holder 2 by using the groove 27. The extension form of the groove 27 can be used to limit the cold fluid to flow along the groove 27, so as to ensure the contact quality between the cold fluid and the target holder 2.

[0082] Example 9

[0083] In this embodiment, an X-ray source is provided on the basis of Embodiment 1, the X-ray source includes any cooling device as described above, the X-ray source also includes a cathode 12, an anode target 3 and a vacuum wall 1, the target seat 2 and the vacuum wall 1 form a vacuum chamber 23, the cathode 12 and the anode target 3 are both installed in the vacuum chamber 23, the anode target 3 is installed on the target seat 2, and the cathode 12, the anode target 3, the vacuum wall 1 and the target seat 2 form an X-ray tube.

[0084] Specifically, the target holder 2 and the vacuum wall 1 form a vacuum chamber 23, and the cathode 12 and the anode target 3 work in the vacuum chamber 23, that is, the cathode 12, the anode target 3, the vacuum wall 1 and the target holder 2 form an X-ray tube. For the heat generated by the anode target 3, the first cooling unit 11 is used as a device on the X-ray tube for forced cooling of the anode target 3. Specifically, the cathode 12 generates electrons under the action of the first power supply 13 which is an AC power supply, and is accelerated under the electric field generated by the second power supply 14 which is a high-voltage DC power supply. After bombarding the anode target 3, the generated X-rays are emitted through the ray window 10, and the generated heat is transferred to the target holder 2 and then discharged by the cold fluid introduced by the first cooling unit 11 connected to the target holder 2.

[0085] Example 10

[0086] In this embodiment, further refinement is performed based on Embodiment 9:

[0087] An X-ray machine also includes a control box, a high-voltage generator and a flexible cable, wherein the X-ray source, the control box and the high-voltage generator are functional modules that are independent of each other in structure, and the high-voltage generator is electrically connected to the X-ray source and the control box respectively through a flexible cable. In this solution, the functional modules of the X-ray machine are set to be independent of each other and the flexible cables are used to establish an electrical connection relationship, so that the functional modules of the X-ray machine can be flexibly arranged according to the spatial conditions on site during specific use, thereby improving the adaptability of the X-ray machine to the installation environment.

[0088] Embodiment 11

[0089] In this embodiment, a method for installing a cooling device for an X-ray machine is provided on the basis of Embodiment 1, and the method comprises the following steps:

[0090] S1. Determine whether the installation space can be used to install a cooling device;

[0091] S2. If a cooling device can be installed, the cooling device is movably connected to the X-ray tube through a threaded connection, and then the X-ray machine is used;

[0092] S3. If the cooling device cannot be installed, use the X-ray tube alone.

[0093] In this embodiment, whether to install a cooling device can be selected according to the size of the installation environment. On the one hand, the cooling device can be installed in the X-ray tube first, and then the X-ray tube is installed in the installation environment. On the other hand, the installation can be performed in steps according to the size of the installation environment. First, the X-ray tube is installed in the installation environment, and then the cooling device is installed, which fully considers the impact of the installation environment on the installation of the cooling device. If the installation environment is too small to install the cooling device, it can also be chosen not to install it. In order to avoid overheating of the X-ray tube, a solution of reducing the exposure time, reducing the exposure amount, or extending the interval time between two operations can be adopted. This solution is not good for image quality and detection efficiency, but compared with the traditional larger X-ray source with a cooling device, this X-ray source can still provide the necessary structural basis for implementing X-ray digital imaging technology when dealing with such a detection environment.

[0094] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A cooling device for an X-ray machine, the device being used for cooling an X-ray source of the X-ray machine by using a cold fluid, the X-ray source comprising a target holder (2), characterized in that: The device comprises a first cooling unit (11), the first cooling unit (11) comprises an inlet hole (9), an outlet hole (8), a first liquid path and a second liquid path, the first liquid path comprises a first liquid path channel and a second liquid path channel, the inlet hole (9) is mounted on the second liquid path channel, the outlet hole (8) is mounted on the first liquid path channel, the first liquid path and the second liquid path are connected, the target seat (2) and the outer wall (4) are detachably connected, and the inlet hole (9), the second liquid path channel, the second liquid path, the first liquid path channel and the outlet hole (8) form a flow channel through which a cold fluid flows.

2. The cooling device of an X-ray machine according to claim 1, characterized in that: The first cooling unit (11) further comprises an outer wall (4), an inner wall (6), a central tube (7), a first end plate (24) and a second end plate (25); the first end plate (24) is respectively mounted on the outer wall (4), the inner wall (6) and the central tube (7); the second end plate (25) is respectively mounted on the inner wall (6) and the central tube (7); the second end plate (25) and the central tube (7) are connected; the outlet hole (8) is mounted on the outer wall (4) and connected; the inlet hole (9) is mounted on the first end plate (24) and connected to the central tube (7); the outer wall (4) and the inner wall (6) form a partition cavity (5); the second end plate (25) and the target seat (2) form a first cavity.

3. The cooling device of an X-ray machine according to claim 2, characterized in that: The first end plate (24) and the second end plate (25) are both annular in shape, the center tube (7) has a built-in center hole (26), the first liquid path channel is a partition cavity (5), the second liquid path channel is the center hole (26), and the second liquid path is a groove on the target seat (2) or a first cavity.

4. The cooling device of an X-ray machine according to claim 3, characterized in that: The target seat (2) and the outer wall (4) are threadedly connected via internal threads and external threads.

5. The cooling device of an X-ray machine according to claim 4, characterized in that: The outer wall (4) and the inner wall (6) are both cylindrical, and the central tube (7) is installed inside the inner wall (6).

6. A cooling device for an X-ray machine according to claim 5, further comprising an isolation block (22), wherein the isolation block (22) is installed in the partition cavity (5).

7. The cooling device of an X-ray machine according to claim 1, characterized in that: The device further comprises a groove (27), wherein the groove (27) is mounted on the target holder (2).

8. The cooling device for an X-ray machine according to claim 1, characterized in that: The device further comprises a circulation pipe (15), a second cooling unit (16), a storage tank (17), a shutoff valve (18), a pressure stabilizing tank (19) and a circulation pump (20); the outlet hole (8), the second cooling unit (16), the storage tank (17), the circulation pump (20), the pressure stabilizing tank (19), the shutoff valve (18) and the inlet hole (9) are connected in sequence via the circulation pipe (15).

9. An X-ray source, comprising the cooling device according to any one of claims 1 to 7, characterized in that: The X-ray source further comprises a cathode (12), an anode target (3) and a vacuum wall (1); the target stand (2) and the vacuum wall (1) form a vacuum chamber (23); the cathode (12) and the anode target (3) are both installed in the vacuum chamber (23); the anode target (3) is installed on the target stand (2); and the cathode (12), the anode target (3), the vacuum wall (1) and the target stand (2) form an X-ray tube.

10. An X-ray machine, comprising the X-ray source according to claim 8, characterized in that: The X-ray machine also includes a control box, a high voltage generator and a flexible cable, wherein the high voltage generator is connected to the X-ray source and the control box respectively through the flexible cable.

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