A thin window sealing method for a particle detector

Abstract

The application discloses a thin window sealing method of a particle detector, which comprises the following steps: arranging a clamp on a device support, clamping a thin window by using a sealing assembly, clamping the sealing assembly by using the clamp, fixing the clamp on the device support, and welding the sealing assembly by using a welding device, wherein the clamp is continuously and uniformly rotated during the welding until the thin window to be sealed is completely sealed in the sealing assembly. The clamp is used to press the sealing assembly and the thin window clamped by the sealing assembly, so that the tightness and the sealing property of the sealing assembly during subsequent welding are guaranteed. The clamp is fixed to fix the sealing assembly and the thin window to be sealed, so that the position stability of the sealing assembly and the thin window to be sealed during the welding of the sealing assembly is guaranteed. Meanwhile, the clamp is continuously and uniformly rotated during the welding of the sealing assembly, so that the welding points present the shape of fish scale welding, the uniformity of the welding points is guaranteed, the structural strength of the welding position is improved, and then the structural strength of the sealed thin window is improved, so that the thin window is not prone to deformation.

Description

Technical Field

[0001] This invention relates to the field of particle detector packaging technology, and more specifically to a thin-window sealing method for a particle detector. Background Technology

[0002] Gas detectors are crucial tools in particle physics, nuclear physics, and radiometric measurements, and are widely used in various sectors of the national economy and defense. For space particle detectors, especially gas detectors, the working gas within a chamber interacts with charged particles to generate a detection signal. Therefore, the composition and pressure of the gas are extremely important for the detector's efficiency. Traditional gas detectors are mostly flow-through detectors. These detectors typically use gas paths and cylinders to facilitate timely replenishment of the working gas and maintain stable pressure and composition within the detector. Because the detection performance of flow-through detectors depends on the gas path system, this limits the detector's size.

[0003] Existing closed-gas particle detectors enclose the working gas within the detector, maintaining stable internal pressure and gas density. While this eliminates the issues of carrying gas systems and gas emissions, and removes limitations on detector size, it demands higher standards in terms of sealing. To ensure stable operation of the detector's gas in the space environment, it's crucial not only to guarantee the detector's airtightness but also to ensure that the sealing method introduces as few impurities as possible, or generates impurity gases at a sufficiently low rate. Furthermore, during on-orbit operation, the vacuum environment of space, coupled with the working gas filling the detector at a certain pressure, presents significant challenges. Especially for detectors with thin-window structures, the sealing method used results in low mechanical strength, making them prone to deformation under pressure differentials. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the sealing method used in the thin window structure of the particle detector in the prior art results in low mechanical strength of the thin window structure and easy deformation under pressure difference, thereby providing a thin window sealing method for particle detector.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] A method for sealing a thin window of a particle detector, comprising the following steps:

[0007] S1: Provide a device bracket, and install a clamp on the device bracket;

[0008] S2: Use a sealing assembly to clamp the thin window to be sealed, while positioning the thin window in the middle of the sealing assembly;

[0009] S3: Use the clamp 18 described in step S1 to clamp the sealing component 17 that clamped the thin window 16 to be sealed in step S2;

[0010] S4: Fix the clamp from step S3 onto the device bracket from step S1;

[0011] S5: Provide a welding device for welding the sealing assembly. During welding, the clamp is rotated continuously and at a constant speed until the thin window to be sealed is completely sealed within the sealing assembly.

[0012] Further, in step S1, the clamp includes two clamping pieces that clamp onto opposite sides of the sealing assembly; in step S5, the sealing assembly includes two sealing pieces that clamp onto opposite sides of the thin window.

[0013] Furthermore, in step S5, the sealing assembly is fused together by the welding device to complete one welding point; then the clamp is rotated, thereby driving the sealing assembly to rotate, and the sealing assembly is fused together again to complete the next welding point; the rotation of the sealing assembly and the fusion are repeated to complete multiple welding points until the thin window is completely sealed inside the sealing assembly through multiple welding points.

[0014] Furthermore, in step S1, a horizontal turntable mounted on the equipment bracket and a driver connected to the horizontal turntable and adapted to drive the horizontal turntable to rotate are also included.

[0015] Furthermore, the welding device is mounted on the equipment bracket and includes a lower electrode of the welding cap located below the horizontal turntable, an upper electrode of the welding cap located above the horizontal turntable, and a drive member connected to the upper electrode of the welding cap and adapted to drive the upper electrode of the welding cap to approach or move away from the lower electrode of the welding cap; the clamp is located on the horizontal turntable and below the upper electrode of the welding cap.

[0016] Furthermore, a first through hole is provided at the center of the horizontal turntable, and a second through hole corresponding to the position of the first through hole is provided at the center of the fixture. The lower electrode of the welding cap is located in the first through hole, the sealing assembly is located on the second through hole, and the upper electrode of the welding cap is adapted to extend into the second through hole.

[0017] Furthermore, the horizontal turntable has a fixing hole, and the clamp has a positioning hole corresponding to the fixing hole. The clamp is connected to the fixing hole of the horizontal turntable through a first connector in cooperation with the positioning hole.

[0018] Furthermore, the equipment bracket is also provided with a control box connected to the drive component and the driver. The control box is adapted to control the driving of the drive component and the start and stop of the driver, as well as control the rotation time, rotation speed and rotation direction of the horizontal turntable.

[0019] Furthermore, the control box is equipped with a start button, a stop button, an emergency brake button, a completion indicator light, an electric welding indicator light, and a pneumatic indicator light; the control box is suitable for electrical connection with a host computer.

[0020] Furthermore, a fixing plate is provided on the equipment support, and a base is installed on the fixing plate. The horizontal turntable is installed on the base through a second connector.

[0021] The technical solution of this invention has the following advantages:

[0022] 1. The thin-window sealing method for a particle detector provided by the present invention involves setting a clamp on a device support, using a sealing component to hold the thin window, then clamping the sealing component with the clamp, and then fixing the clamp to the device support. The clamp presses the sealing component and the thin window held by the sealing component together to ensure tightness and sealing during subsequent welding of the sealing component. Fixing the clamp can fix the sealing component and the thin window to be sealed, ensuring the positional stability of the sealing component and the thin window to be sealed during welding. At the same time, continuously rotating the clamp at a uniform speed during welding of the sealing component can make the weld point exhibit a fish-scale weld pattern, ensuring the uniformity of the weld point, improving the structural strength of the weld position, and thus improving the structural strength of the thin window to be sealed, making it less prone to deformation.

[0023] 2. The thin window sealing method for particle detectors provided by the present invention includes a clamping device comprising two clamping pieces respectively clamped on opposite sides of the sealing assembly. This arrangement can enhance the fixing strength of the clamping device to the sealing assembly and the thin window.

[0024] 3. The thin window sealing method for particle detectors provided by the present invention includes a horizontal turntable and a driver suitable for driving the horizontal turntable to rotate. A fixture holding the thin window to be sealed and the sealing assembly is located on the horizontal turntable. By driving the horizontal turntable to rotate through the driver, it can be ensured that the horizontal turntable drives the sealing assembly to rotate at a uniform speed, thereby ensuring the uniformity of the weld points during welding and improving the yield of the welded sealing assembly.

[0025] 4. The thin-window sealing method for particle detectors provided by the present invention includes a welding device comprising an upper electrode and a lower electrode of a welding cap. With this configuration, resistance welding is used when welding the sealing component. The sealing component is tightly clamped by applying pressure to the electrodes. Current passes through the contact point between the sealing component and the electrodes to generate resistance heat. The resistance heat is used as a heat source to locally heat the sealing component. During welding, no filler metal is required, resulting in high productivity, small deformation of the sealing component, and no other materials need to be added during the welding process. No other impurities are introduced, which can improve the structural strength of the weld.

[0026] 5. The thin-window sealing method for a particle detector provided by this invention includes a first through hole at the center of a horizontal turntable, a second through hole corresponding to the position of the first through hole at the center of a fixture, a lower electrode of a welding cap located within the first through hole, a sealing assembly located on the second through hole, and an upper electrode of the welding cap adapted to extend into the second through hole. This arrangement ensures the fixture's fixation of the sealing assembly without affecting the welding operation of the welding device.

[0027] 6. The thin-window sealing method for a particle detector provided by the present invention includes a fixing hole on a horizontal turntable and a positioning hole on a fixture corresponding to the fixing hole. The fixture is connected to the fixing hole of the horizontal turntable via a first connector that mates with the positioning hole. This configuration effectively ensures the stability of the fixture and sealing assembly when the horizontal turntable rotates, thus guaranteeing the welding effect of the welding operation.

[0028] 7. The thin-window sealing method for a particle detector provided by this invention includes a control chassis equipped with a start button, a stop button, an emergency stop button, a completion indicator light, a welding indicator light, and a pneumatic indicator light; the control chassis is suitable for connection to a host computer. With this configuration, the welding device can be started by the start button, and the welding device can be stopped from all current tasks and returned to its original position by the stop button; the welding device can be stopped at the state at the moment the emergency stop button is pressed, and pressing the emergency stop button again will resume the welding device's operation; when the welding device is powered on, both the start and stop buttons illuminate, indicating that the device is ready to start; when the control chassis controls the drive unit to run, the pneumatic indicator light illuminates, and simultaneously the drive unit drives the upper electrode of the welding cap towards the lower electrode of the welding cap; when the drive unit drives the upper electrode of the welding cap away from the lower electrode of the welding cap, the pneumatic indicator light turns off; when the control chassis controls the upper and lower electrodes of the welding cap to be energized, the welding indicator light illuminates, and turns off when the power is off; when the welding device completes the preset welding task, the completion indicator light illuminates. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional structural diagram of the equipment bracket in this invention;

[0031] Figure 2 This is a schematic diagram showing the positional relationship between the clamp and the positioning block in this invention;

[0032] Figure 3 This is a schematic diagram showing the connection relationship between the sealing component and the thin window in this invention;

[0033] Figure 4 This is a schematic diagram showing the positional relationship between the horizontal turntable, the clamp, and the sealing assembly in this invention.

[0034] Explanation of reference numerals in the attached drawings: 1. Drive unit; 2. Upper electrode of welding helmet; 3. Horizontal turntable; 4. Driver; 5. Lower electrode of welding helmet; 6. Fixing plate; 7. Equipment bracket; 8. Control box; 9. Completion indicator light; 10. Welding indicator light; 11. Pneumatic indicator light; 12. Start button; 13. Stop button; 14. Emergency brake button; 15. Positioning hole; 16. Thin window; 17. Sealing assembly; 18. Clamp; 19. First connecting member. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] like Figure 1-4 The thin-window sealing method for a particle detector, as shown, includes the following steps:

[0040] S1: Provide a device bracket 7, and install a clamp 18 on the device bracket 7;

[0041] S2: Use the sealing assembly 17 to clamp the thin window 16 to be sealed, while positioning the thin window 16 in the middle of the sealing assembly 17;

[0042] S3: Use the clamp 18 from step S1 to clamp the sealing component 17 that holds the thin window 16 to be sealed in step S2;

[0043] S4: Fix the clamp 18 from step S3 onto the device bracket 7 from step S1;

[0044] S5: Provide a welding device and use the welding device to weld the sealing assembly 17. During welding, the clamp 18 is rotated continuously and at a uniform speed until the thin window 16 to be sealed is completely sealed inside the sealing assembly 17.

[0045] This thin-window sealing method for particle detectors uses a clamp 18 to hold the sealing component 17 in place, ensuring tightness and sealing during subsequent welding of the sealing component 17. Fixing the clamp 18 secures the sealing component 17 and the thin window 16 to be sealed, ensuring positional stability during welding. Simultaneously, continuous and uniform rotation of the clamp 18 during welding of the sealing component 17 results in a fish-scale weld pattern, ensuring weld uniformity, improving structural strength at the welding position, and consequently enhancing the structural strength of the sealed thin window 16, making it less prone to deformation.

[0046] Specifically, in step S1, the clamp 18 includes two clamping pieces that clamp onto opposite sides of the sealing assembly 17; in step S5, the sealing assembly 17 includes two sealing pieces that clamp onto opposite sides of the thin window 16. This arrangement strengthens the fixing strength of the clamp 18 to the sealing assembly 17 and the thin window 16.

[0047] In step S5, the sealing component 17 is fused together by the welding device to complete one welding point; then the clamp 18 is rotated, which drives the sealing component 17 to rotate, and the sealing component 17 is fused together again to complete the next welding point; the sealing component 17 is rotated and fused together repeatedly to complete multiple welding points until the thin window 16 is completely sealed in the sealing component 17 through multiple welding points.

[0048] Step S1 also includes a horizontal turntable 3 mounted on the equipment bracket 7 and a driver 4 connected to the horizontal turntable 3 and adapted to drive the horizontal turntable 3 to rotate. This configuration ensures that the horizontal turntable 3 drives the sealing assembly 17 to rotate at a uniform speed, thereby ensuring the uniformity of the weld points during welding and improving the yield of the welded sealing assembly 17.

[0049] In this embodiment, the welding device is mounted on the equipment bracket 7 and includes a lower electrode 5 of the welding cap located below the horizontal turntable 3, an upper electrode 2 of the welding cap located above the horizontal turntable 3, and a drive component 1 connected to the upper electrode 2 of the welding cap and adapted to drive the upper electrode 2 of the welding cap to approach or move away from the lower electrode 5 of the welding cap; the clamp 18 is located on the horizontal turntable 3 and below the upper electrode 2 of the welding cap; specifically, the drive component 1 is a pneumatic device, and the driver 4 is a stepper motor. With this configuration, when welding and sealing the sealing component 17, resistance welding is used. The sealing component 17 is tightly clamped by applying pressure to the electrodes. Current passes through the contact point between the sealing component 17 and the electrodes to generate resistance heat. The resistance heat is used as a heat source to locally heat the sealing component 17. During welding, no filler metal is required, resulting in high productivity. The deformation of the sealing component 17 is small, and no other materials need to be added during the welding process, so no other impurities are introduced, which can improve the structural strength of the weld.

[0050] In this embodiment, a first through hole is provided at the center of the horizontal turntable 3, and a second through hole corresponding to the position of the first through hole is provided at the center of the clamp 18. The lower electrode 5 of the welding cap is located in the first through hole, the sealing component 17 is located on the second through hole, and the upper electrode 2 of the welding cap is adapted to extend into the second through hole. This arrangement ensures the fixing effect of the clamp 18 on the sealing component 17 without affecting the welding operation of the welding device.

[0051] In this embodiment, the horizontal turntable 3 has a fixing hole, and the clamp 18 has a positioning hole 15 corresponding to the fixing hole. The clamp 18 is connected to the fixing hole of the horizontal turntable 3 through the first connector 19 and the positioning hole 15. This arrangement can effectively ensure the stability of the clamp 18 and the sealing assembly 17 when the horizontal turntable 3 rotates, thus ensuring the welding effect of the welding operation.

[0052] In this embodiment, a fixing plate 6 is also provided on the equipment bracket 7, and a base is mounted on the fixing plate 6. The horizontal turntable 3 is mounted on the base via a second connector. Specifically, the fixing plate 6 is fixed to the equipment bracket 7, the drive component 1 is fixed to the fixing plate 6 via a support rod, the base is fixed to the fixing plate 6, and a mounting plate is fixed on the base. The horizontal turntable 3 is fixed to the mounting plate via the second connector. This arrangement allows the horizontal turntable 3 to be detached and easily replaced via the second connector. Specifically, both the first connector 19 and the second connector are fixing nuts.

[0053] In this embodiment, the equipment bracket 7 is also provided with a control box 8 connected to the drive component 1 and the driver 4. The control box 8 is adapted to control the drive of the drive component 1 and the start and stop of the driver 4, as well as control the rotation time, rotation speed and rotation direction of the horizontal turntable 3.

[0054] In this embodiment, the control box 8 is equipped with a start button 12, a stop button 13, an emergency brake button 14, a completion indicator light 9, an electric welding indicator light 10, and a pneumatic indicator light 11; the control box 8 is suitable for electrical connection with a host computer. With this setup, the welding device can be started by pressing the start button 12, and stopped by pressing the stop button 13, which will stop all current tasks and return the device to its original position. The emergency stop button 14 will stop the welding device at the moment it is pressed, and pressing it again will resume operation. When the welding device is powered on, both the start button 12 and the stop button 13 will light up, indicating that the device is ready to start. When the control box 8 controls the drive unit 1 to run, the pneumatic indicator light 11 will light up, and the drive unit 1 will drive the upper electrode 2 of the welding cap towards the lower electrode 5. When the drive unit 1 drives the upper electrode 2 of the welding cap away from the lower electrode 5, the pneumatic indicator light 11 will turn off. When the control box 8 controls the upper electrode 2 and the lower electrode 5 of the welding cap to be powered on, the welding indicator light 10 will light up, and it will turn off when the power is off. When the welding device completes the preset welding task, the completion indicator light 9 will light up.

[0055] Specifically, the welding device is powered on, at which point both the start button 12 and the stop button 13 light up, indicating that the welding device is ready to start working; pressing the start button 12 again starts the welding device. Next, the control box 8 controls the driver 4 to rotate through a specified angle, thereby driving the horizontal turntable 3 to rotate through a specified angle; then the control box 8 controls the drive component 1 to run, at which point the pneumatic indicator light 11 lights up, and the upper electrode 2 of the welding cap is sent downward, pressing together with the lower electrode of the welding cap to press the material to be welded; the control box 8 then controls the high-voltage power supply to power the upper electrode 2 and the lower electrode 5 of the welding cap, at which point the welding indicator light 10 lights up, completing one weld point; then the welding cap is de-powered, and the welding indicator light 10 goes out, then the drive component 1 is lifted, driving the upper electrode 2 of the welding cap back to its original position, and then the pneumatic indicator light 11 goes out; this cycle continues until the welding device completes the set welding task, and the completion indicator light 9 lights up.

[0056] In summary, this thin-window sealing method for particle detectors, by clamping the sealing component 17 with the clamp 18, ensures the tightness and sealing of the sealing component 17 during subsequent welding. Fixing the clamp 18 can fix the sealing component 17 and the thin window 16 to be sealed, ensuring the positional stability of the sealing component 17 and the thin window 16 to be sealed during welding. At the same time, by continuously and uniformly rotating the clamp 18 during welding the sealing component 17, the weld points can be made to have a fish-scale weld pattern, ensuring the uniformity of the weld points, improving the structural strength of the weld position, and thus improving the structural strength of the sealed thin window 16, making it less prone to deformation.

[0057] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A method for sealing a thin window of a particle detector, characterized in that, Includes the following steps: S1: Provide an equipment bracket (7), and provide a clamp (18) on the equipment bracket (7); S2: Use the sealing assembly (17) to clamp the thin window (16) to be sealed, while positioning the thin window (16) in the middle of the sealing assembly (17); S3: Use the clamp (18) from step S1 to clamp the sealing assembly (17) that holds the thin window (16) to be sealed in step S2; S4: Fix the clamp (18) from step S3 onto the device bracket (7) from step S1; S5: Provide a welding device for welding the sealing assembly (17) by continuously rotating the clamp (18) at a constant speed during welding until the thin window (16) to be sealed is completely sealed inside the sealing assembly (17). In step S1, a horizontal turntable (3) mounted on the equipment bracket (7) and a driver (4) connected to the horizontal turntable (3) and adapted to drive the horizontal turntable (3) to rotate are also included. The welding device is mounted on the equipment bracket (7) and includes a lower electrode (5) of the welding cap located below the horizontal turntable (3), an upper electrode (2) of the welding cap located above the horizontal turntable (3), and a drive member (1) connected to the upper electrode (2) of the welding cap and adapted to drive the upper electrode (2) of the welding cap to approach or move away from the lower electrode (5) of the welding cap; the clamp (18) is located on the horizontal turntable (3) and below the upper electrode (2) of the welding cap; The horizontal turntable (3) has a first through hole at its center, and the clamp (18) has a second through hole at its center corresponding to the position of the first through hole. The lower electrode (5) of the welding cap is located in the first through hole, the sealing assembly (17) is located on the second through hole, and the upper electrode (2) of the welding cap is adapted to extend into the second through hole.

2. The thin-window sealing method for a particle detector according to claim 1, characterized in that, In step S1, the clamp (18) includes two clamping pieces that clamp the sealing assembly (17) on opposite sides respectively; in step S5, the sealing assembly (17) includes two sealing pieces that clamp the thin window (16) on opposite sides respectively.

3. The thin-window sealing method for a particle detector according to claim 1, characterized in that, In step S5, the sealing assembly (17) is fused together by the welding device to complete one welding point; then the clamp (18) is rotated, thereby driving the sealing assembly (17) to rotate, and the sealing assembly (17) is fused together again to complete the next welding point; the sealing assembly (17) is rotated and fused together repeatedly to complete multiple welding points until the thin window (16) is completely sealed in the sealing assembly (17) through multiple welding points.

4. The thin-window sealing method for a particle detector according to claim 1, characterized in that, The horizontal turntable (3) has a fixing hole, and the clamp (18) has a positioning hole (15) corresponding to the fixing hole. The clamp (18) is connected to the fixing hole of the horizontal turntable (3) through the first connector (19) in cooperation with the positioning hole (15).

5. The thin-window sealing method for a particle detector according to claim 1, characterized in that, The equipment bracket (7) is also provided with a control box (8) connected to the drive (1) and the driver (4). The control box (8) is adapted to control the drive of the drive (1) and the start and stop of the driver (4), as well as control the rotation time, rotation speed and rotation direction of the horizontal turntable (3).

6. The thin-window sealing method for a particle detector according to claim 5, characterized in that, The control box (8) is equipped with a start button (12), a stop button (13), an emergency brake button (14), a completion indicator (9), an electric welding indicator (10), and a pneumatic indicator (11); the control box (8) is suitable for electrical connection with a host computer.

7. The thin-window sealing method for a particle detector according to claim 1, characterized in that, The equipment bracket (7) is also provided with a fixing plate (6), and a base is installed on the fixing plate (6). The horizontal turntable (3) is installed on the base through a second connector.

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