Clamping and cooling device

Abstract

The utility model relates to the technical field of synchrotron radiation, and provides a clamping and cooling device. The clamping and cooling device comprises a first clamping part, a second clamping part and a cooling part, and the second clamping part is used for switching between a first state and a second state; the cooling part is arranged on at least one of the first clamping part and the second clamping part; in the first state, the first clamping part and the second clamping part are matched in a limiting mode, so that the cooling part is attached to the workpiece, and the cooling part and the workpiece are limited; and in the second state, the first clamping component and the second clamping component release the limiting fit. The clamping and cooling device for the monochromator crystal overcomes the defect that the monochromator crystal is deformed due to a cooling and clamping structure in the using process in the prior art, can cool the monochromator crystal, and avoids the problems that the monochromator crystal is deformed due to clamping and the temperature is not matched with that of the monochromator crystal. And the normal work of the monochromator crystal is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of synchrotron radiation, in particular to a clamping and cooling device. Background Art

[0002] Synchrotron radiation source refers to a physical device that produces synchrotron radiation. It is a high-performance light source that uses charged particles with speeds close to the speed of light to generate synchrotron radiation when they are deflected in a magnetic field. The crystal monochromator of synchrotron radiation is a device that uses the Bragg diffraction of X-rays by crystals to obtain monochromatic rays. Among them, the double crystal monochromator is a common type of monochromator. The monochromator crystal is divided into a first crystal and a second crystal. The two crystals are used together to ensure that the final monochromatic light is emitted from the monochromator in the same direction and at a fixed height. Therefore, the angular stability and crystal surface shape changes between the monochromator crystals are required to be as small as possible. When the monochromator crystal is irradiated by synchrotron radiation during operation, it will be subjected to extremely high heat loads. Liquid nitrogen is generally used for cooling. When liquid nitrogen is used for cooling, the temperature of the first crystal will drop to about the liquid nitrogen temperature zone (-196°C). At this time, the second crystal also needs to be cooled accordingly to match the crystal temperatures of the two and maintain a high energy resolution. This places high demands on the cooling and clamping structure of the second crystal.

[0003] The existing clamping and cooling devices for monochromator crystals cannot overcome the problem of maintaining a good cooling effect while not causing excessive clamping deformation and avoiding the introduction of excessive vibration during the use of the monochromator crystal. Utility Model Content

[0004] The utility model provides a clamping and cooling device to solve the problem that the prior art cannot overcome the deformation of the monochromator crystal caused by clamping and cooling during use, and realizes a clamping and cooling device that can cool the monochromator crystal, thereby avoiding excessive deformation of the monochromator crystal caused by clamping and cooling, and ensuring the normal operation and excellent surface performance of the monochromator crystal.

[0005] The utility model provides a clamping and cooling device, comprising:

[0006] a first clamping member,

[0007] A second clamping member, used to switch between a first state and a second state;

[0008] A cooling component is provided in at least one of the first clamping component and the second clamping component; in the first state, the first clamping component and the second clamping component are limitedly matched to attach the cooling component to the crystal and limit the cooling component and the crystal; in the second state, the first clamping component and the second clamping component are released from the limited matching.

[0009] According to a clamping and cooling device provided by the utility model, the first clamping component also includes a clamping piece, and a first flexible piece is provided on a side of the clamping piece close to the crystal, and the first flexible piece is used to resolve the torsion between the clamping piece and the crystal.

[0010] According to a clamping and cooling device provided by the utility model, the first flexible part includes a fixed part, a first movable part and a second movable part are respectively provided on both sides of the fixed part, a first notch is provided between the first movable part and the fixed part, and a second notch is provided between the second movable part and the fixed part.

[0011] According to a clamping and cooling device provided by the utility model, a first connecting portion is provided between two ends of the first notch, a second connecting portion is provided between two ends of the second notch, and the first connecting portion and the second connecting portion are staggered.

[0012] According to a clamping and cooling device provided by the utility model, the first clamping component includes a heat insulating member, and the heat insulating member is connected to the clamping member.

[0013] According to a clamping and cooling device provided by the utility model, the second clamping component includes a fastener, and the fastener is connected to the clamping component to limit the cooling component and the cooling crystal.

[0014] According to a clamping and cooling device provided by the utility model, the second clamping component also includes a second flexible component, the second flexible component is sleeved on the fastener, and one end of the second flexible component is connected to the cooling component, and the other end is connected to the fastener.

[0015] According to a clamping and cooling device provided by the utility model, at least two fasteners are provided, and the fasteners are arranged at intervals.

[0016] According to a clamping and cooling device provided by the utility model, the cooling component includes a cooling plate, the cooling plate is attached to the crystal, and the cooling plate is connected to a heat conducting component.

[0017] According to a clamping and cooling device provided by the utility model, a flow channel is provided inside the cooling plate.

[0018] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0019] The utility model can effectively cool the crystal by setting a cooling component, and cool the crystal to a suitable temperature through heat conduction or a cooling system, and the cooling crystal ensures its optical performance. The optimized clamping component can control the deformation of the crystal caused by clamping within a smaller range, and maintain a good surface quality. At the same time, the clamping component can be applied to a larger temperature range, release the thermal stress caused by the larger cooling temperature difference, keep the surface shape of the crystal from being affected by the thermal stress, and thus maintain the optical performance. In addition, the utility model can also reduce the vibration of the crystal and avoid the influence of vibration on the crystal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the clamping and cooling device provided by the utility model;

[0022] Figure 2 This is a front view of the clamping and cooling device provided by the utility model;

[0023] Figure 3 It is a cross-sectional view of the clamping and cooling device provided by the utility model;

[0024] Figure 4 It is a side view of the clamping and cooling device provided by the utility model;

[0025] Figure 5 It is a structural schematic diagram of the cooling component of the clamping and cooling device provided by the utility model;

[0026] Figure 6 It is a structural schematic diagram of the first flexible member of the clamping and cooling device provided by the utility model.

[0027] Reference numerals:

[0028] 100: first clamping member; 110: heat insulating member; 120: clamping member; 130: first flexible member; 131: first movable portion; 132: fixed portion; 133: second movable portion; 134: first notch; 135: second notch;

[0029] 200: second clamping member; 210: fastener; 220: second flexible member; 221: spring; 222: spring seat;

[0030] 300: cooling component; 310: cooling plate; 311: threaded hole; 320: heat conducting member; 330: heat conducting member base; 340: base fixing plate;

[0031] 400: Crystal. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "first" and "second" are numbered for the purpose of clearly explaining the product components and do not represent any substantial difference. The directions of "upper" and "lower" shall be based on the directions shown in the accompanying drawings. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to the specific circumstances. In addition, the meaning of "multiple" is two or more. In the specification, "and / or" means at least one of the connected objects, and the character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] A monochromator is an optical device used to convert a polychromatic light beam into a monochromatic light beam. It is usually composed of two crystals: a first crystal and a second crystal, which are usually silicon crystals, germanium crystals, or multilayer film elements. The first crystal selects and transmits light of a certain wavelength through the diffraction effect. It can select the desired wavelength by adjusting the rotation angle. The second crystal has the same optical properties as the first crystal, and by adjusting the rotation angle to match the diffraction angle of the first crystal's specific wavelength light, the light can pass through.

[0036] The first crystal of the monochromator is generally subjected to the heat load of polychromatic light and needs to be cooled. The second crystal will also have a small amount of heat load and needs to be cooled, or the second crystal needs to match the temperature of the first crystal and also needs to be cooled. The second crystal needs to be cooled and clamped. The existing clamping structure will cause the crystal to deform. The large temperature gradient during the cooling process will also cause the crystal to deform, thereby affecting its optical properties. This may lead to problems such as loss of light flux, spot distortion, reduced energy resolution, reduced energy accuracy, and reduced data signal-to-noise ratio in the instrument. Especially for the fourth-generation synchrotron radiation source, higher requirements are placed on the surface accuracy of the crystal, and these problems are more prominent. In order to solve the above problems, refer to Figures 1 to 6 , a clamping and cooling device provided by the embodiment of the utility model

[0037] Figure 1 The schematic diagram of the structure of the clamping and cooling device provided by the embodiment of the utility model is illustrated. Figure 2 The front view of the clamping and cooling device provided by the embodiment of the utility model is illustrated;

[0038] Figure 3 A cross-sectional view of a clamping and cooling device provided by an embodiment of the utility model is illustrated; Figure 4 A side view of a clamping and cooling device provided by an embodiment of the utility model is illustrated.

[0039] Reference Figures 1 to 4 The clamping and cooling device provided in the embodiment of the utility model includes a first clamping component 100, a second clamping component 200 and a cooling component 300.

[0040] Wherein, the second clamping member 200 is used to switch between the first state and the second state;

[0041] The cooling component 300 is provided on at least one of the first clamping component 100 and the second clamping component 200; in the first state, the first clamping component 100 and the second clamping component 200 are limitedly matched to attach the cooling component 300 to the cooling crystal 400 and limit the cooling component 300 and the cooling crystal 400; in the second state, the first clamping component 100 and the second clamping component 200 are released from the limited matching. Specifically, the material of the cooling component 300 can be oxygen-free copper, aluminum, silver, nickel, titanium, aluminum alloy or copper alloy, etc., which is not limited here and can be selected according to actual conditions.

[0042] It can be understood that this embodiment includes at least three solutions. Solution 1: The first clamping component 100 is provided with a cooling component 300; Solution 2: The second clamping component 200 is provided with a cooling component 300; Solution 3: Both the first clamping component 100 and the second clamping component 200 are provided with a cooling component 300. Figure 1, the bottom surface of the cooling crystal 400 is the working surface, therefore, the first clamping member 100 and the second clamping member 200 can be located on the left and right sides of the cooling crystal 400, and the cooling member 300 is located between the cooling crystal 400 and the first clamping member 100, or the cooling member 300 is located between the cooling crystal 400 and the second clamping member 200. When the second clamping member 200 is in the first state, the first clamping member 100 and the second clamping member 200 are close to each other, and then the cooling member 300 and the cooling crystal 400 are clamped between the first clamping member 100 and the second clamping member 200, so as to limit the cooling member 300 and the cooling crystal 400. At the same time, the cooling member 300 is pressed against the left and right sides of the cooling crystal 400, so that the cooling member 300 is attached to the cooling crystal 400, so as to facilitate the rapid removal of the heat generated by the cooling crystal 400, and achieve rapid cooling of the cooling crystal 400.

[0043] In the above structure, the utility model can effectively cool the crystal by setting a cooling component, and cool the crystal to a suitable temperature through heat conduction or a cooling system, and the cooling crystal ensures its optical performance. The optimized clamping component can control the deformation of the crystal caused by clamping within a smaller range, and maintain a good surface quality. At the same time, the clamping component can be applied to a larger temperature range, release the thermal stress caused by the large cooling temperature difference, keep the surface shape of the crystal from being affected by the thermal stress, and thus maintain the optical performance. In addition, the utility model can also reduce the vibration of the crystal and avoid the influence of vibration on the crystal.

[0044] Reference Figure 2 In some embodiments of the present invention, the first clamping component 100 includes a clamping member 120, and a first flexible member 130 is provided on a side of the clamping member 120 close to the cooling crystal 400, and the first flexible member 130 is used to resolve the torsion between the clamping member 120 and the cooling crystal 400.

[0045] In some possible embodiments, the first flexible member 130 adopts a hinge structure. The hinge structure includes at least two solid objects, wherein two or more solid objects are connected to each other and can rotate or swing relative to each other. Specifically, the first flexible member 130 includes two metal cylinders, and hinge connection points are provided at both ends of the two cylinders close to each other, and the hinge connection points of the two cylinders are hinged to each other. The hinge can realize the rotational movement between the two cylinders while keeping them at a certain angle or position. The two cylinders are clamped between the cooling crystal 400 and the clamping member 120. Through the above structure, the cooling crystal 400 can offset the thermal stress during the operation of the cooling crystal 400 and the distortion during the assembly process during the clamping process, thereby reducing the surface shape change of the cooling crystal 400 during the operation process.

[0046] Figure 6 The schematic structural diagram of the first flexible member of the clamping and cooling device provided in the embodiment of the utility model is illustrated.

[0047] Reference Figure 6 In some embodiments of the present utility model, the first flexible member 130 includes a fixed portion 132, and a first movable portion 131 and a second movable portion 133 are respectively disposed on both sides of the fixed portion 132. A first notch 134 is disposed between the first movable portion 131 and the fixed portion 132, and a second notch 135 is disposed between the second movable portion 133 and the fixed portion 132. A first connecting portion is disposed between the two ends of the first notch 134, and a second connecting portion is disposed between the two ends of the second notch 135, and the first connecting portion and the second connecting portion are staggered.

[0048] The shape of the first flexible member 130 may be, but is not limited to, cylindrical. The material thereof may be, for example, a metal material with a certain elasticity, such as steel or aluminum; or an elastic plastic, such as polyester resin or nylon; or rubber. Specifically, in some possible embodiments, the first flexible member 130 is a cylindrical steel block, and an arc groove is cut at the parts close to both ends thereof, respectively, and the arc groove is the first notch 134 and the second notch 135, and the part between the two arc grooves is the fixed part 132, and the parts of the arc groove away from both sides of the fixed part 132 are the first movable part 131 and the second movable part 133.

[0049] In the above structure, a certain relative movement can occur between the first movable part 131, the fixed part 132 and the second movable part 133. In the process of clamping, the two arc grooves (i.e., the first notch 134 and the second notch 135) can absorb and buffer the impact and vibration between the connecting parts, reducing the force and vibration transmitted to the cooling crystal 400. At the same time, it can also reduce noise, protect the cooling crystal 400, and extend its service life. In addition, since its material has a certain elasticity and flexibility, the two arc grooves can compensate for the deviation and deformation of the first flexible part 130 to a certain extent. The first flexible part 130 can adapt to certain errors and deformations, and the first flexible part 130 can still move relatively without being severely restricted. Furthermore, the first flexible part 130 has a certain elasticity and bendability, so that it can bend under the action of external force. This allows the first flexible part 130 to rotate or swing within a certain angle range, providing flexibility and adjustability. It can play a role similar to a spring, has a certain resilience, and can restore the first flexible part 130 to its initial position to maintain the tightness and stability of the connection.

[0050] Reference Figure 1In some embodiments of the present invention, the first clamping member 100 further includes a heat insulating member 110, and the heat insulating member 110 is connected to the clamping member 120. The material of the heat insulating member 110 can be a ceramic material to prevent heat from being transferred to other parts and causing adverse effects.

[0051] Specifically, the heat insulating member 110 includes a mounting portion and a connecting portion, wherein the connecting portion is fixedly arranged perpendicular to the mounting portion. The mounting portion and the connecting portion may be integrally formed or detachably connected by bolts. Both the mounting portion and the connecting portion are provided with a plurality of threaded holes, and the clamping member 120 is fixed to the connecting portion by bolts. In the specific use process, the first clamping member 100 needs to be fixed, and the mounting portion may be fixed by bolts, thereby achieving the fixing of the first clamping member 100.

[0052] Reference Figure 3 In some embodiments of the present invention, the second clamping component 200 includes a fastener 210, which is connected to the clamping component 120 to limit the cooling component 300 and the cooling crystal 400.

[0053] Specifically, the fastener 210 is a screw, and the fastener 210 sequentially penetrates the cooling plate 310, the cooling crystal 400, the first flexible member 130 and the clamping member 120, and is then fixed by a nut (not shown in the figure). Thereby, the clamping of the cooling component 300 and the cooling crystal 400 is achieved. It should be noted that the cooling component 300, the cooling crystal 400, the first flexible member 130 and the clamping member 120 are all provided with corresponding holes, so as to facilitate the penetration of the fastener 210. The connection method through the screw penetration has a simple structure and can provide a higher connection strength. By properly selecting the bolt material and the correct preload force, the stability and reliability of the connection can be ensured. Secondly, the connection method through the screw can be adjusted as needed, and the degree of tightness of the connection can be changed by adjusting the preload force of the bolt. This adjustability makes the bolt connection suitable for connecting crystals of different thicknesses.

[0054] Reference Figure 3 In some embodiments of the present invention, the second clamping component 200 further includes a second flexible component 220 , which is sleeved on the fastener 210 and has one end connected to the cooling component 300 and the other end connected to the fastener 210 .

[0055] Specifically, the second flexible member 220 includes a spring 221 and a spring seat 222, the spring seat 222 is fixedly mounted on one end of the spring 221 away from the cooling crystal 400, and the fastener 210 passes through the spring 221 and the spring seat 222. The nut is arranged on the side of the spring seat 222 away from the spring 221 and is threadedly connected with the fastener 210, and the second flexible member 220 is clamped between the nut (not shown in the figure) and the cooling component 300.

[0056] Reference Figure 4 In some embodiments of the present invention, at least two fasteners 210 are provided, and the two fasteners 210 are arranged at intervals. Specifically, three, four, five, etc. fasteners 210 can be provided. The specific number is not limited. When there are three fasteners 210, specifically, refer to Figure 4 . It is possible that one fastener 210 is provided on the left side of the clamp 120, and two fasteners 210 are provided on the right side. It is also possible that one fastener 210 is provided on the right side of the clamp 120, and two fasteners 210 are provided on the left side. When one fastener 210 is provided on the left side of the clamp 120, and two fasteners 210 are provided on the right side, the fastener 210 on the left side and the two fasteners 210 on the right side both conform to the Bezier point setting method. When one fastener 210 is provided on the right side of the clamp 120, and two fasteners 210 are provided on the left side, the fastener 210 on the right side and the two fasteners 210 on the left side both conform to the Bezier point setting method.

[0057] A fixed hole of the clamp 120 is provided with a flexible screw hole, which is connected to 120 through a flexible structure. The crystal can release the deformation caused by thermal expansion and contraction due to a large temperature difference by connecting to this hole, thereby not causing a large deformation of the crystal.

[0058] The Bessel three-point support adopted by the fastener 210 of this embodiment can reduce deformation and distortion during the clamping process. At the same time, the flexible support of the spring 221 can offset the thermal stress of the crystal during operation and the distortion during assembly, thereby reducing the overall change of the surface shape of the crystal during operation.

[0059] Figure 5 The schematic structural diagram of the cooling component of the clamping and cooling device provided in the embodiment of the utility model is illustrated.

[0060] Reference Figure 5In some embodiments of the utility model, the cooling component 300 includes a cooling plate 310, which is attached to the cooling crystal 400, and the cooling plate 310 is connected to a heat-conducting component. A threaded hole 311 is provided on the cooling plate 310, and the threaded hole 311 is used for the fastener 210 to penetrate the cooling plate 310. The heat-conducting component includes a heat-conducting member 320, one end of which is connected to the cooling plate 310, and the other end is connected to a heat-conducting member base 330, and the bottom of the heat-conducting member base 330 is connected to a base fixing plate 340. The materials of the heat-conducting member 320, the heat-conducting member base 330 and the base fixing plate 340 can be oxygen-free copper, aluminum, silver, nickel, titanium, aluminum alloy or copper alloy. Specifically, the heat-conducting member 320 can be composed of 50 layers of 20mm copper foil. In specific use, the base fixing plate 340 can be passed into the cold source, so that the cold is transferred to the cooling plate 310, thereby achieving the cooling of the cooling crystal 400. In some possible embodiments, a flow channel is provided inside the cooling plate 310 for liquid nitrogen to flow.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A clamping and cooling device, characterized in that: include: A first clamping member (100), A second clamping component (200) for switching between a first state and a second state; A cooling component (300) is arranged on at least one of the first clamping component (100) and the second clamping component (200); in the first state, the first clamping component (100) and the second clamping component (200) are limitedly matched to attach the cooling component (300) to the cooling crystal (400) and limit the cooling component (300) and the cooling crystal (400); in the second state, the first clamping component (100) and the second clamping component (200) are released from the limited matching.

2. The clamping and cooling device according to claim 1, characterized in that: The first clamping component (100) comprises a clamping member (120), and a first flexible member (130) is provided on a side of the clamping member (120) close to the cooling crystal (400), and the first flexible member (130) is used to resolve the torsion between the clamping member (120) and the cooling crystal (400).

3. The clamping and cooling device according to claim 2, characterized in that: The first flexible member (130) comprises a fixed portion (132), a first movable portion (131) and a second movable portion (133) are respectively provided on two sides of the fixed portion (132), a first notch (134) is provided between the first movable portion (131) and the fixed portion (132), and a second notch (135) is provided between the second movable portion (133) and the fixed portion (132).

4. The clamping and cooling device according to claim 3, characterized in that: A first connecting portion is provided between the two ends of the first notch (134), a second connecting portion is provided between the two ends of the second notch (135), and the first connecting portion and the second connecting portion are staggered.

5. The clamping and cooling device according to any one of claims 2 to 4, characterized in that: The first clamping component (100) further comprises a heat insulating member (110), wherein the heat insulating member (110) is connected to the clamping member (120).

6. The clamping and cooling device according to claim 2, characterized in that: The second clamping component (200) comprises a fastener (210), and the fastener (210) is connected to the clamping component (120) and is used to limit the cooling component (300) and the cooling crystal (400).

7. The clamping and cooling device according to claim 6, characterized in that: The second clamping component (200) further comprises a second flexible component (220), which is sleeved on the fastener (210) and has one end connected to the cooling component (300) and the other end connected to the fastener (210).

8. The clamping and cooling device according to claim 6 or 7, characterized in that: At least two of the fasteners (210) are provided, and the fasteners (210) are arranged at intervals.

9. The clamping and cooling device according to claim 1, characterized in that: The cooling component (300) comprises a cooling plate (310), the cooling plate (310) is attached to the cooling crystal (400), and the cooling plate (310) is connected to a heat conduction component.

10. The clamping and cooling device according to claim 9, characterized in that: A flow channel is provided inside the cooling plate (310).

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