Temperature measuring device for X-ray tube

Abstract

The present application provides a temperature measuring device for an X-ray tube, the temperature measuring device for an X-ray tube comprising: a supporting body, used to connect a component to be measured in the X-ray tube; a temperature sensing element, movably connected to the supporting body, used to thermally couple with the component to be measured, the temperature sensing element expands and deforms along a specified direction as the temperature rises; a temperature measuring element, movably connected to the supporting body, arranged on a path of expansion and deformation of the temperature sensing element, when the temperature sensing element expands and deforms, it is pushed by the temperature sensing element to move along the specified direction. The above scheme can improve the accuracy of temperature measurement of the component to be measured in the X-ray tube.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of medical diagnostic equipment, and in particular to a temperature measuring device for an X-ray tube. Background Art

[0002] Computed Tomography (CT) is an important diagnostic technology in modern medicine. The core component of CT, the tube (also called the X-ray tube), is the source of X-rays. The tube is mainly composed of a tube core, a tube shell, cooling oil, a radiator, etc. The tube core is a high vacuum container wrapped by a tube shell, and the internal structure is relatively complex. Under high voltage, electrons are generated from the cathode to bombard the anode target disk, generating X-rays and a large amount of heat. The temperature management of the tube core is very important. If the heat dissipation is poor, it will cause deformation of the tube core shell window, metal evaporation (also called metal evaporation) leading to sparks, and bearing jamming. Therefore, it is crucial to accurately know the temperature of each part inside the tube core, especially the highest temperature of each part of the tube core during operation, for the development of tubes.

[0003] However, due to the complex internal structure of the tube core and the high vacuum environment, the temperature cannot be directly measured by conventional means. For metal tube core shells, it is currently impossible to accurately measure the temperature inside the tube core. For glass tube core shells, the existing method generally uses an infrared thermometer to measure through the glass tube core shell, but this method has high requirements on the infrared transmittance of the glass and the accuracy of the measuring instrument. Due to factors such as infrared loss, the measurement error is large and the temperature inside the tube core cannot be accurately measured. Summary of the invention

[0004] The technical problem solved by the embodiments of the present invention is that the temperature measurement error of the components in the tube core is large, and the temperature inside the tube core cannot be accurately measured.

[0005] To solve the above technical problems, an embodiment of the present invention provides a temperature measuring device for an X-ray tube, comprising: a supporting body, used to connect a component to be temperature-measured in the X-ray tube; a temperature sensing element, movably connected to the supporting body, used to be thermally coupled with the component to be temperature-measured, the temperature sensing element expanding and deforming along a specified direction as the temperature rises; a temperature measuring element, movably connected to the supporting body, arranged on a path of expansion and deformation of the temperature sensing element, and when the temperature sensing element expands and deforms, it is pushed by the temperature sensing element to move along the specified direction.

[0006] Optionally, the supporting body has an installation groove extending along the specified direction, and the installation groove is used to install the temperature sensing component and the temperature measuring component.

[0007] Optionally, the mounting groove is open along the specified direction, wherein the temperature sensing component and the temperature measuring component are arranged in sequence along the specified direction.

[0008] Optionally, an observation window extending along the specified direction is provided on the outer surface of the support body, and the observation window is communicated with the mounting groove to expose a portion of the temperature measuring component.

[0009] Optionally, at least a portion of the temperature sensing component and the temperature measuring component that have expanded and deformed at a preset maximum temperature are accommodated in the installation groove.

[0010] Optionally, the temperature measuring component is configured to move unidirectionally in the specified direction.

[0011] Optionally, a limiting portion is disposed on the supporting body, and the temperature measuring component is provided with a stopping portion, and the limiting portion cooperates with the stopping portion to limit the movement of the temperature measuring component in the opposite direction to the specified direction.

[0012] Optionally, the temperature sensing element includes a memory metal element.

[0013] Optionally, the supporting body is annular and is used to be sleeved on a side surface of a target disk of the X-ray tube, and the component to be temperature measured includes the target disk.

[0014] Optionally, the expansion coefficient of the temperature measuring component is smaller than the expansion coefficient of the temperature sensing component.

[0015] Optionally, the temperature measuring device for an X-ray tube further includes a shielding device connected to the supporting body and shielding the supporting body, the temperature measuring component and the temperature sensing component.

[0016] Optionally, the outer surface of the shielding device is a curved surface.

[0017] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0018] The support body is connected to the temperature-to-be-measured component in the X-ray tube, and the temperature-sensing component is thermally coupled with the temperature-to-be-measured component. The temperature-sensing component can accurately sense the temperature of the temperature-to-be-measured component, and the temperature-sensing component is movably connected to the support body, and expands and deforms along a specified direction as the temperature rises, and then the temperature-sensing component can push the temperature-measuring component arranged on the expansion and deformation path of the temperature-sensing component to move along the specified direction. Since the temperature-sensing component is thermally coupled with the temperature-to-be-measured component, the temperature of the temperature-to-be-measured component can be sensed more accurately, so that the expansion and deformation of the temperature-sensing component along a specified direction as the temperature rises can accurately reflect the temperature of the temperature-to-be-measured component, and then the temperature of the temperature-to-be-measured component can be accurately known through the position of the temperature-measuring component in the specified direction, so that the temperature of the temperature-to-be-measured component in the tube core of the X-ray tube can be directly measured, and the measured temperature has a high degree of fit with the actual temperature of the temperature-to-be-measured component, and can more realistically reflect the actual temperature of the temperature-to-be-measured component, so that the accuracy of the temperature measurement of the temperature-to-be-measured component in the X-ray tube can be improved.

[0019] Furthermore, an observation window extending along a specified direction is provided on the outer surface of the support body, and the observation window is communicated with the mounting groove to expose a portion of the temperature measuring component, so as to facilitate observation of the position of the temperature measuring component in the specified direction and improve the convenience of obtaining the temperature of the component to be measured.

[0020] Furthermore, the temperature measuring component is configured to move unidirectionally in a specified direction. Thus, within a measurement cycle, the position of the temperature measuring component in the specified direction reflects the highest temperature within the measurement cycle, so as to intuitively know the highest temperature of the component to be measured within the measurement cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a temperature measuring device for an X-ray tube installed on a component to be temperature measured in an embodiment of the present invention;

[0022] Figure 2 It is a partial structural schematic diagram of a temperature measuring device for an X-ray tube in an embodiment of the present invention;

[0023] Figure 3 yes Figure 2 Exploded diagram of

[0024] Figures 4 to 6 Schematic diagram of the working principle of a temperature measuring device for an X-ray tube in an embodiment of the present invention;

[0025] Figure 7 is an exploded view of another temperature measuring device for an X-ray tube in an embodiment of the present invention;

[0026] Figures 8 to 10 It is a schematic diagram of the working principle of another temperature measuring device for an X-ray tube in an embodiment of the present invention;

[0027] Fig.11 yes Figure 8 Schematic diagram of the local structure at point A. DETAILED DESCRIPTION

[0028] As mentioned above, due to the complex internal structure of the tube core and the high vacuum environment, the temperature cannot be directly measured by conventional means. For metal tube core shells, it is currently impossible to accurately measure the temperature inside the tube core. For glass tube core shells, the existing method generally uses an infrared thermometer to measure through the glass tube core shell, but this method has high requirements on the infrared transmittance of the glass and the accuracy of the measuring instrument, and due to the influence of infrared loss and other factors during the measurement, the measurement error is large, and the temperature inside the tube core cannot be accurately measured. In addition, the above-mentioned solution of using an infrared thermometer for temperature measurement has a long initial debugging time and a high measurement cost. For metal tube core shells, it is impossible to use an infrared thermometer to measure the temperature of its internal components.

[0029] To solve the above problems, in an embodiment of the present invention, the support body is connected to the temperature-to-be-measured component in the X-ray tube, and the temperature sensing component is thermally coupled with the temperature-to-be-measured component. The temperature sensing component can accurately sense the temperature of the temperature-to-be-measured component, and the temperature sensing component is movably connected to the support body, and expands and deforms along a specified direction as the temperature rises, and then the temperature sensing component can push the temperature measuring component disposed on the expansion and deformation path of the temperature sensing component to move along the specified direction. Since the temperature sensing component is thermally coupled with the temperature-to-be-measured component, the temperature of the temperature-to-be-measured component can be sensed more accurately, so that the expansion and deformation of the temperature sensing component along a specified direction as the temperature rises can accurately reflect the temperature of the temperature-to-be-measured component, and then the temperature of the temperature-to-be-measured component can be accurately known by the position of the temperature measuring component in the specified direction, so that the temperature of the temperature-to-be-measured component in the tube core of the X-ray tube can be directly measured, and the measured temperature has a high degree of fit with the actual temperature of the temperature-to-be-measured component, and can more realistically reflect the actual temperature of the temperature-to-be-measured component, so that the accuracy of the temperature measurement of the temperature-to-be-measured component in the X-ray tube can be improved. In addition, the above solution can directly measure the temperature of the component to be measured without the need for long-term debugging, thereby reducing testing costs.

[0030] In order to make the above-mentioned purposes, features and beneficial effects of the embodiments of the present invention more obvious and understandable, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] The present invention provides a temperature measuring device for an X-ray tube. The temperature measuring device for an X-ray tube (hereinafter referred to as the temperature measuring device) can be used to measure the temperature of components in the X-ray tube, for example, to measure the temperature of components in a tube core in an X-ray tube. Figure 1 It is a structural schematic diagram of a temperature measuring device for an X-ray tube installed on a component to be temperature measured in an embodiment of the present invention; Figure 2 It is a partial structural schematic diagram of a temperature measuring device for an X-ray tube in an embodiment of the present invention; Figure 3 yes Figure 2 Exploded diagram of Figure 7 It is an exploded view of another temperature measuring device for an X-ray tube in an embodiment of the present invention. It should be noted that the black, oblique lines or dotted fillings in the figure are only for the convenience of those skilled in the art to distinguish the relative positions of different components, and do not limit the scope of protection of this application. Figures 1 to 3 , Figure 7 The specific structure of the temperature measuring device is described.

[0032] In a specific implementation, the temperature measuring device 100 includes: a supporting body 10, a temperature sensing element 20 and a temperature measuring element 30. The supporting body 10 is used to connect the component 200 to be measured in the X-ray tube. The temperature sensing element 20 is movably connected to the supporting body 10, and is used for thermal coupling with the component 200 to be measured. The temperature sensing element 20 expands and deforms along a specified direction x as the temperature rises. The temperature measuring element 30 is movably connected to the supporting body 10, and is arranged on the path of the expansion and deformation of the temperature sensing element 20. When the temperature sensing element 20 expands and deforms, it is pushed by the temperature sensing element 20 to move along the specified direction x.

[0033] As can be seen from the above, the temperature sensing component 20 is thermally coupled with the component 200 to be measured by connecting the support body 10 to the component to be measured in the X-ray tube, so as to accurately sense the temperature of the component 200 to be measured, and the temperature sensing component 20 is movably connected to the support body 10, and expands and deforms along the specified direction x as the temperature rises, so that the temperature sensing component 20 can push the temperature measuring component 30 arranged on the expansion deformation path of the temperature sensing component 20 to move along the specified direction x. Since the temperature sensing component 20 is thermally coupled to the component 200 to be temperature-measured, the temperature of the component 200 to be temperature-measured can be sensed more accurately, so that the expansion deformation of the temperature sensing component 20 along the specified direction x as the temperature rises can accurately reflect the temperature of the component 200 to be temperature-measured, and then the temperature of the component 200 to be temperature-measured can be accurately known through the position of the temperature measuring component 30 in the specified direction x, so that the temperature of the component 200 to be temperature-measured in the core of the X-ray tube can be directly measured. The measured temperature has a high degree of fit with the actual temperature of the component 200 to be temperature-measured, and can more realistically reflect the actual temperature of the component 200 to be temperature-measured, so the accuracy of the temperature measurement of the component 200 to be temperature-measured in the X-ray tube can be improved.

[0034] In addition, the above solution can directly measure the temperature of the component to be measured without the need for long-term debugging, thereby reducing testing costs.

[0035] In a specific implementation, the temperature sensing member 20 may be a memory metal member. The memory metal member is pre-annealed to obtain a memory effect and to form a matching shape at room temperature to obtain the temperature sensing member 20. The memory metal member is configured to expand significantly along a specified direction x, and expand to different maximum positions at different temperatures. When the temperature decreases, the memory metal member will shrink in the opposite direction of the expansion direction, that is, shrink back in the opposite direction of the specified direction x.

[0036] Combination Figures 4 to 6 is a schematic diagram of the working principle of a temperature measuring device for an X-ray tube in an embodiment of the present invention, and Figures 8 to 10 1 is a schematic diagram of the working principle of another temperature measuring device for an X-ray tube in an embodiment of the present invention. The specific working principle of the temperature measuring device 100 is described below.

[0037] See also Figure 4 A schematic diagram showing a temperature measuring device in an initial state. Figure 8 The schematic diagram of another temperature measuring device in an initial state is shown. In the initial state, the temperature sensing element 20 and the temperature measuring element 30 are in contact with each other, and the contact position is recorded as L1, wherein the contact position is the position relative to the supporting body 10.

[0038] See also Figure 5 A schematic diagram of the relative position of a temperature sensing element 20 and a temperature measuring element 30 when the temperature sensing element 20 expands and deforms in an embodiment of the present invention is shown. Fig. 9 Another schematic diagram of the relative position of the temperature sensing element 20 and the temperature measuring element 30 when the temperature is expanded and deformed in an embodiment of the present invention is shown. When the temperature rises, the temperature sensing element 20 expands and deforms, and pushes the temperature measuring element 30 to move to the position L2 along the specified direction x.

[0039] See also Figure 6 A schematic diagram of the relative position of a temperature sensing element 20 and a temperature measuring element 30 after cooling and shrinking in an embodiment of the present invention is shown. Fig.10 The schematic diagram of the relative position of another temperature sensing element 20 and the temperature measuring element 30 after cooling and shrinking in an embodiment of the present invention is shown. When the temperature of the temperature sensing element 20 decreases, the temperature sensing element 20 cools and shrinks to position L3, and the temperature measuring element 30 does not move in the opposite direction with the shrinkage of the temperature sensing element 20, and remains in position L2.

[0040] In some non-limiting embodiments, the memory metal piece may be composed of chemical elements such as titanium (Ti), nickel (Ni) and hafnium (Hf). The proportion of Hf is not less than 10%. For example, the ratio of titanium, nickel and hafnium is 5:3:2. It is understood that the ratio of titanium, nickel and hafnium is not limited to the above examples, and can also be configured to other ratios according to actual needs.

[0041] In a specific implementation, the temperature measuring element 30 is made of metal material, and the expansion coefficient of the temperature measuring element 30 is smaller than the expansion coefficient of the temperature sensing element 20 .

[0042] In some non-limiting embodiments, the temperature measuring element 30 is made of metal molybdenum. It is understandable that, according to the preparation material of the temperature sensing element 20 and actual needs, the preparation material of the temperature measuring element 30 is not limited to metal molybdenum, and can also be made of other suitable metal materials, as long as the expansion coefficient of the temperature measuring element 30 is less than the expansion coefficient of the temperature sensing element 20. Further, the expansion coefficient of the temperature measuring element 30 is less than the set threshold value, and the set threshold value can be configured according to the size of the supporting body 10 and the maximum temperature to be borne by the component 200 to be measured. In this way, the influence of temperature changes on the shape of the temperature measuring element 30 can be minimized, and the accuracy of the temperature measurement result can be further improved.

[0043] In some scenarios, the temperature measuring element 30 may include a metal ruler. The temperature measuring element 30 may be configured with a scale, which is used to represent different temperatures, and a reference position is set on the support body 10. As the temperature of the component 200 to be measured increases, the temperature sensing element 20 expands and pushes the temperature measuring element 30 to move, and the corresponding scale of the temperature measuring element 30 and the reference position changes. Therefore, according to the corresponding relationship between the specified position of the support body 10 and the scale on the temperature measuring element 30, the temperature corresponding to the position after the temperature measuring element 30 moves can be obtained, that is, the temperature of the component 200 to be measured can be obtained.

[0044] In some embodiments, the support body 10 has an installation groove 11 extending along the specified direction x, and the installation groove 11 is used to install the temperature sensing element 20 and the temperature measuring element 30 .

[0045] In some non-limiting embodiments, the support body 10 is provided with a hollow structure having an opening opened along a specified direction x. The hollow structure forms a mounting groove 11. The opening of the hollow structure is the opening of the mounting groove 11.

[0046] In some embodiments, the temperature sensing element 20 and the temperature measuring element 30 are arranged in sequence along the specified direction x. The temperature measuring element 30 is closer to the opening of the installation groove 11 than the temperature sensing element 20. During assembly, the temperature sensing element 20 can be placed in the installation groove 11 first, and then the temperature measuring element 30 can be placed. As a non-limiting embodiment, in the initial state, the temperature sensing element 20 and the temperature measuring element 30 are in contact. Figure 4 and Figure 8 In the initial state, the contact position between the temperature sensing element 20 and the temperature measuring element 30 is recorded as L1.

[0047] In some embodiments, the installation groove 11 is open along the designated direction x, wherein the temperature sensing element 20 and the temperature measuring element 30 are arranged in sequence along the designated direction x.

[0048] In some embodiments, the outer surface of the support body 10 is provided with an observation window 12 extending along the specified direction x, and the observation window 12 is communicated with the mounting groove 11 to expose a portion of the temperature measuring element 30. The observation window 12 can be used to observe the relative position of the temperature measuring element 30 and the support body 10, and the maximum temperature of the component 200 to be measured within a measurement cycle can be determined according to the initial position of the temperature measuring element 30 and the support body 10 and the current relative position of the temperature measuring element 30 and the support body 10.

[0049] In some non-limiting embodiments, the contact surface of the temperature measuring element 30 and the temperature sensing element 20 is used as a reference, and the maximum temperature of the component 200 to be measured in a measurement cycle is determined according to the position of the contact surface relative to the support body 10.

[0050] In a specific implementation, there may be a plurality of observation windows 12. The plurality of observation windows 12 are arranged at intervals so as to facilitate observation of the relative position of the temperature measuring element 30 and the supporting body 10 at multiple angles.

[0051] In some non-limiting embodiments, the observation window 12 may be a waist-shaped groove, and the length direction of the waist-shaped groove is along a specified direction x.

[0052] In some non-limiting embodiments, there is no scale on the temperature measuring element 30, and a ruler may be provided along the designated direction x at the edge of the observation window 12, and a scale 13 may be provided on the ruler. According to the scale corresponding to the designated position of the temperature measuring element 30 on the ruler, the temperature measured by the temperature measuring element 30 may be obtained more conveniently. The designated position of the temperature measuring element 30 may be the edge of the temperature measuring element 30 closest to the temperature sensing element 20. It is understandable that other suitable positions in the temperature measuring element 30 may also be designated as the designated position. As the temperature rises, the temperature sensing element 20 expands and deforms and pushes the temperature measuring element 30 to move relative to the supporting body 10 in the designated direction x. Whenever the temperature sensed by the temperature sensing element 20 is higher than the previously sensed temperature, the temperature sensing element 20 expands and deforms in the designated direction x and further pushes the temperature measuring element 30 to move relative to the supporting body 10. In this way, within a measurement cycle, the final position of the temperature measuring component 30 relative to the supporting body 10, at this time, the scale corresponding to the specified position of the temperature measuring component 30 on the ruler can be obtained, and the scale represents the highest temperature measured by the temperature measuring component 30, that is, the highest temperature of the component 200 to be measured.

[0053] In some embodiments, the scale 13 on the ruler can be a temperature or a mapping coefficient of the temperature. The corresponding relationship between the mapping coefficient and the temperature is pre-configured, and the corresponding temperature can be obtained based on the mapping coefficient. For example, mapping coefficient 1 corresponds to 50 degrees Celsius, mapping coefficient 2 corresponds to 100 degrees Celsius, etc. The specific mapping relationship between the mapping coefficient and the temperature can be configured according to the minimum temperature and maximum temperature range of the temperature-measured component 200, the size of the support body 10, etc., and is not limited here.

[0054] In some embodiments, at least a portion of the temperature sensing element 20 and the temperature measuring element 30 after expansion deformation at a preset maximum temperature is accommodated in the mounting groove 11. In this way, when the temperature-measured component 200 reaches the preset maximum temperature, the temperature sensing element 20 and the temperature measuring element 30 can still be accommodated in the mounting groove 11, thereby preventing the temperature sensing element 20 and the temperature measuring element 30 from falling off from the mounting groove 11, thereby improving the reliability of the temperature measuring device 100 and avoiding affecting the normal operation of the X-ray tube.

[0055] In some embodiments, the temperature measuring element 30 is configured to move unidirectionally in the specified direction x. That is, when the temperature sensing element 20 expands and deforms, the temperature measuring element 30 is pushed to move along the specified direction x. When the temperature sensing element 20 cools and contracts, the temperature measuring element 30 does not move back (in the opposite direction of the specified direction) with the temperature sensing element 20, so as to calibrate the temperature sensed by the temperature sensing element 20. When the temperature sensed by the temperature sensing element 20 is higher than the previously sensed temperature, the temperature sensing element 20 expands and deforms in the specified direction and pushes the temperature measuring element 30 to move relative to the supporting body 10 again. In this way, the highest temperature of the component 200 to be measured sensed by the temperature sensing element 20 within a measurement cycle can be known through the position of the temperature measuring element 30 relative to the supporting body 10.

[0056] In some embodiments, the friction coefficient between the temperature measuring element 30 and the supporting body 10 is less than a set coefficient to ensure that the temperature measuring element 30 can move smoothly under the push of the expansion deformation of the temperature sensing element 20 .

[0057] In some embodiments, in combination Figures 1 to 6 The support body 10 is annular and is used to be mounted on the side of the target plate of the X-ray tube. The temperature-measured component 200 includes the target plate. Figure 1 The target plate is used as an example for the component 200 to be measured. The temperature measuring device 100 is installed on the side of the target plate as an example for illustration. At this time, the temperature sensing element 20 and the temperature measuring element 30 can also be configured in a ring shape.

[0058] It is understandable that, in practice, the temperature measuring device 100 can also be installed on a suitable position such as the target surface of the target disk. When the temperature measuring device 100 is installed on the target surface or other temperature measuring areas, the support body 10 can also be in other suitable structures such as a plate or a sheet. According to the shape of the component 200 to be measured, the area to be measured, etc., the support body 10 can also be set to different shapes, and accordingly, the temperature sensing element 20 and the temperature measuring element 30 can also be configured to corresponding shapes.

[0059] In other embodiments, in combination Figures 7 to 11 , Fig.11 yes Figure 8 The partial structural diagram at A in the middle shows that the support body 10 can be columnar. The support body 10 is provided with a limit portion 42, and the temperature measuring element 30 is provided with a stop portion 41. The limit portion 42 cooperates with the stop portion 41 to limit the movement of the temperature measuring element 30 in the opposite direction of the specified direction x. In this way, the rebound of the temperature measuring element 30 can be avoided, and the accuracy of the position calibration of the temperature measuring element 30 can be improved.

[0060] In some embodiments, the limiting portion 42 is disposed on the end surface of the opening of the installation slot 11. The limiting portion 42 extends along the specified direction x and obliquely toward the center line of the installation slot 11.

[0061] In some embodiments, the stopper 41 may be serrated, and the stopper 41 protrudes from the outer surface of the temperature measuring element 30. The stopper 41 has a stopper surface 411 and a guide surface 412. The guide surface 412 is parallel to the inclination direction of the limiter 42. When the temperature measuring element 30 moves along the specified direction x, the guide surface 412 guides the limiter 42 to smoothly pass over the stopper 41. After the limiter 42 smoothly passes over the stopper 41, the stopper surface 411 abuts against the limiter 42 to limit the temperature measuring element 30 from moving in the opposite direction to the specified direction x.

[0062] In some non-limiting embodiments, the inner wall surface of the support body 10 is provided with a guide groove 14 for accommodating the stopper 41. The guide groove is open toward the temperature measuring element 30 and the specified direction x, and the limiter 42 is provided at the opening of the guide groove 14 in the specified direction x.

[0063] In a non-limiting embodiment, the stop surface 411 is perpendicular to the outer surface of the temperature measuring component 30 .

[0064] In some non-limiting embodiments, the temperature measuring device 100 may further include a shielding device connected to the support body 10. The shielding device covers the support body 10, the temperature measuring element 30 and the temperature sensing element 20, that is, surrounds the support body 10, the temperature measuring element 30 and the temperature sensing element 20. The shielding device is connected to the support body 10 to shield the temperature measuring device 100 from affecting the electric field in the X-ray tube, so as to prevent the temperature measuring device 100 from interfering with the normal operation of the tube core assembly in the X-ray tube.

[0065] The shielding device is higher than the supporting body 10. The shielding device is fixedly connected to the supporting body 10 by welding or bolting. The specific dimension of the shielding device higher than the supporting body 10 can be configured according to actual space conditions.

[0066] Furthermore, the outer surface of the shielding device is a curved surface. The curved surface faces the direction of the maximum potential difference in the X-ray tube. Specifically, the curved surface faces the direction of the maximum potential difference within the installation area of ​​the temperature measuring device 100.

[0067] In some embodiments, the shielding device is a metal cover.

[0068] When the temperature measuring device 100 is in a complex electric field, the shielding device can cover the supporting body 10, reducing the probability of spark breakdown caused by tip discharge when the edge with the largest potential difference and the shortest distance of the supporting body 10 faces the cathode, thereby ensuring the normal operation of the X-ray tube.

[0069] During the development of X-ray tubes, the temperature measuring device 100 provided by the present invention can more accurately measure the maximum temperature of each component (component to be measured) in the tube core when the X-ray tube is working, providing more reliable data support for the research and development work.

[0070] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A temperature measuring device for an X-ray tube, characterized in that: include: A supporting body, used for connecting the component to be measured temperature in the X-ray tube; A temperature sensing member is movably connected to the supporting body and is used for thermal coupling with the temperature-measured component. The temperature sensing member expands and deforms along a specified direction as the temperature rises. The temperature sensing member includes a memory metal member, and the maximum position of expansion is different at different temperatures. When the temperature decreases, the memory metal member will shrink back in the opposite direction of the specified direction. A temperature measuring element, movably connected to the supporting body, disposed on a path of expansion and deformation of the temperature sensing element, and pushed by the temperature sensing element to move along the specified direction when the temperature sensing element expands and deforms; Wherein, the temperature measuring component is configured to move unidirectionally in the specified direction, and when the temperature sensing component cools and contracts, the temperature measuring component does not move in the opposite direction of the specified direction along with the temperature sensing component.

2. The temperature measuring device for an X-ray tube according to claim 1, characterized in that: The supporting body has an installation groove extending along the specified direction, and the installation groove is used to install the temperature sensing component and the temperature measuring component.

3. The temperature measuring device for an X-ray tube according to claim 2, characterized in that: The installation groove is open along the designated direction, wherein the temperature sensing element and the temperature measuring element are arranged in sequence along the designated direction.

4. The temperature measuring device for an X-ray tube according to claim 3, characterized in that: An observation window extending along the specified direction is provided on the outer surface of the support body, and the observation window is communicated with the mounting groove to expose a portion of the temperature measuring component.

5. The temperature measuring device for an X-ray tube according to claim 3, characterized in that: At least a portion of the temperature sensing component and the temperature measuring component that have expanded and deformed at a preset maximum temperature are accommodated in the installation groove.

6. The temperature measuring device for an X-ray tube according to claim 1, characterized in that: The support body is provided with a limiting portion, the temperature measuring component is provided with a stopping portion, and the limiting portion cooperates with the stopping portion to limit the temperature measuring component from moving in the opposite direction to the specified direction.

7. The temperature measuring device for an X-ray tube according to claim 1, characterized in that: The supporting body is annular and is used for being sleeved on the side of the target disk of the X-ray tube. The component to be temperature measured includes the target disk.

8. The temperature measuring device for an X-ray tube according to claim 1, characterized in that: The expansion coefficient of the temperature measuring component is smaller than the expansion coefficient of the temperature sensing component.

9. The temperature measuring device for an X-ray tube according to claim 1, characterized in that: It also includes a shielding device, which is connected to the supporting body and covers the supporting body, the temperature measuring component and the temperature sensing component.

10. The temperature measuring device for an X-ray tube according to claim 9, characterized in that: The outer surface of the shielding device is a curved surface.

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