Spectrometer detector sealing structure and spectrometer
By employing multiple seals and a specific structural design in the spectrometer detector, the vacuum sealing problem caused by the vulnerability of the probe was solved, achieving a low leakage rate seal and improving detection accuracy and sample adaptability.
Patent Information
- Application Number
- CN202423232793.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In vacuum X-ray fluorescence spectrometers, the fragility of the detector probe makes it difficult to achieve a low-leakage vacuum seal, affecting detection accuracy and sample adaptability.
It employs multiple seals and a specific structural design, including a first seal and a second seal, to seal the gaps between the probe and the inner wall of the cylinder and between the cylinder and the vacuum chamber, respectively, and achieves low leakage rate sealing through annular grooves and stepped sections.
This achieves a low-leakage vacuum seal on fragile probes, improving the analytical accuracy and sample adaptability of the spectrometer.
Smart Images
Figure CN223711484U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of spectrometer, specifically about a spectrometer detector sealing structure and spectrometer. BACKGROUND
[0002] With the continuous improvement of the detection precision of convenient and fast X-ray fluorescence spectrometer, the detection precision has a tendency to replace part of the chemical analysis detection. At the same time, the problem of the influence of air on the detection precision of X-ray fluorescence spectrometer is more and more prominent. Therefore, the vacuum type X-ray fluorescence spectrometer becomes the preferred scheme to improve the analysis and detection precision.
[0003] The vacuum type X-ray fluorescence spectrometer is an instrument for analyzing the composition of matter by detecting the characteristic spectrum of the electron transition released by the X-ray excited sample. Compared with the ordinary X-ray fluorescence spectrometer, the vacuum type X-ray fluorescence spectrometer reduces the background peak interference of air, and is more accurate in qualitative and quantitative analysis of sample composition, especially in light element detection and analysis. This kind of instrument is widely used in manufacturing industry, medical industry, chemical industry, metallurgy industry and food, medicine and environment, etc.
[0004] However, since the beryllium window part of the detector probe is very fragile, it is difficult to realize low leakage rate vacuum sealing of the detector probe in the vacuum type X-ray fluorescence spectrometer.
[0005] The information disclosed in this background section is intended only to enhance understanding of the general background of the present utility model, and should not be considered as acknowledging or implying in any form that this information constitutes prior art that is already known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL
[0006] The utility model aims at providing a spectrometer detector sealing structure and spectrometer, which can realize low leakage rate vacuum sealing on a fragile probe, improve analysis and detection precision and sample adaptability.
[0007] In order to realize the above purpose, the technical scheme provided by a specific embodiment of the utility model is as follows:
[0008] A spectrometer detector sealing structure, comprising:
[0009] A first cylinder body is axially hollow, and the first cavity and the second cavity are distributed in the first cylinder body along the axial direction;
[0010] A second cylinder body is arranged in the first cavity of the first cylinder body, and the third cavity is formed in the second cylinder body;
[0011] A probe is arranged in the second cavity of the first cylinder body, and the first sealing element is arranged between the probe and the inner wall of the second cavity; and
[0012] An amplifier is arranged in the third chamber of the second cylinder and is electrically connected with the probe.
[0013] In one or more embodiments of the present application, a plurality of the first seals are arranged between the inner wall of the second chamber and the probe.
[0014] In one or more embodiments of the present application, an annular groove is formed on the inner wall of the second chamber, and the first seal is arranged in the annular groove; and / or,
[0015] A plurality of annular grooves are formed on the inner wall of the second chamber along the axial direction thereof, and one first seal is arranged in each of the annular grooves.
[0016] In one or more embodiments of the present application, the second cylinder has a first end portion facing the second chamber;
[0017] The probe is arranged on the first end portion and partially penetrates through the first end portion, extends in the third chamber, and is connected with the amplifier.
[0018] In one or more embodiments of the present application, the inner diameter of the first chamber is greater than the inner diameter of the second chamber;
[0019] The first end portion of the second cylinder abuts against the top wall of the first chamber.
[0020] In one or more embodiments of the present application, at least one first seal is arranged at the connection between the first end portion and the probe.
[0021] In one or more embodiments of the present application, the spectrometer probe sealing structure further comprises a cylinder cap, which is sleeved on the end where the second chamber of the first cylinder is located, and a detection window is formed on the cylinder cap.
[0022] In one or more embodiments of the present application, the spectrometer probe sealing structure further comprises a mounting shell, a vacuum cavity is formed in the mounting shell, and a through hole is formed on the cavity wall of the vacuum cavity;
[0023] The first cylinder is arranged in the through hole and is provided with a second seal between the first cylinder and the through hole.
[0024] In one or more embodiments of the present application, a protruding stepped portion is arranged on the outer periphery of the first cylinder at the end where the first chamber is located;
[0025] The outer diameter of the stepped portion is greater than the inner diameter of the through hole;
[0026] The second seal is disposed between the stepped portion and the through hole.
[0027] A spectrometer having the aforementioned spectrometer detector sealing structure.
[0028] Compared with existing technologies, the spectrometer detector sealing structure and spectrometer of this invention can achieve a low-leakage vacuum seal on the fragile probe, thereby improving the analytical detection accuracy and sample adaptability of the spectrometer. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0030] Fig. 1 This is a schematic diagram of the sealing structure of the spectrometer detector in one embodiment of the present invention;
[0031] Fig. 2 This is a cross-sectional view of the sealing structure of the spectrometer detector in one embodiment of the present invention;
[0032] Fig. 3 This is a structural diagram of the first cylindrical body of the spectrometer detector sealing structure in one embodiment of the present invention. Detailed Implementation
[0033] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0034] like Figs. 1 to 3 As shown, the spectrometer detector sealing structure in one embodiment of the present invention includes a mounting housing 10 and a detector disposed on the mounting housing 10.
[0035] like Fig. 1 As shown, a vacuum chamber 11 is formed inside the mounting housing 10, and a through hole 12 is provided on the cavity wall of the vacuum chamber 11. A first groove structure 13 is recessed on the outer surface of the mounting housing 10 at the location of the through hole 12. The first groove structure 13 is used to place the second sealing element 32.
[0036] The probe comprises a first barrel 21, a barrel cap 22, a second barrel 23, a probe head 24 and an amplifier 25.
[0037] Reference Fig. 2 And Fig. 3 As shown, the first barrel 21 comprises a body 214. The body 214 is preferably a circular structure. The body 214 of the first barrel 21 can be arranged in the through hole 12 of the mounting shell 10 and a second seal 32 is arranged between the body 214 and the inner wall of the through hole 12.
[0038] The first barrel 21 is axially hollow and has a first chamber 211 and a second chamber 212 which are distributed in communication in the axial direction. The first chamber 211 is used to accommodate the second barrel 23 and the amplifier 25. The second chamber 212 is used to accommodate the probe head 24.
[0039] Further, the first barrel 21 further comprises a stepped portion 213 arranged at the end of the body 214 where the first chamber 211 is located. The stepped portion 213 is arranged protruding from the outer circumferential surface of the body 214.
[0040] The outer diameter of the stepped portion 213 is greater than the inner diameter of the through hole 12 of the mounting shell 10 and greater than the outer diameter of the first groove structure 13. When the first barrel 21 is arranged in the through hole 12 of the mounting shell 10, the stepped portion 213 abuts against the outer surface of the mounting shell 10 and covers the first groove structure 13, so that the second seal 32 located in the first groove structure 13 can completely seal the gap between the stepped portion 213 of the first barrel 21 and the through hole 12.
[0041] The second seal 32 is preferably a sealing ring.
[0042] Further, the outer circumferential surface of the first barrel 21 is provided with buckles or threads at the end where the second chamber 212 is located, for fixing the barrel cap 22. The barrel cap 22 is also provided with buckles or threads, and the barrel cap 22 is arranged at the end of the second chamber 212 of the first barrel 21. The barrel cap 22 is formed with a detection window 221, which facilitates the detection of the vacuum chamber 11 by the probe head 24 in the first barrel 21.
[0043] Preferably, the outer diameter of the first barrel 21 at the end of the second chamber 212 is smaller than the outer diameter of the middle section of the first barrel 21, so that after the barrel cap 22 is arranged, the overall outer diameter of the end of the second chamber 212 is smaller than the outer diameter of the stepped portion 213. The middle section is the section between the barrel cap 22 and the stepped portion 213.
[0044] The second cylinder 23 is preferably in a circular structure. The second cylinder 23 is arranged in the first chamber 211 of the first cylinder 21. The second cylinder 23 has a first end 231 facing the second chamber 212. The first end 231 can be used to support the probe 24. A third chamber 232 is formed in the second cylinder 23, and the third chamber 232 is used to accommodate the amplifier 25. The second cylinder 23 is preferably a uniform heating cylinder.
[0045] The probe 24 is arranged in the second chamber 212 of the first cylinder 21, and preferably, the probe 24 is arranged on the first end 231 of the second cylinder 23 and the pin portion thereof extends in the third chamber 232 through the first end 231. A first sealing member 31 is arranged between the probe 24 and the inner wall of the second chamber 212.
[0046] The number of the first sealing members 31 can be multiple, and the multiple first sealing members 31 are arranged between the inner wall of the second chamber 212 and the probe 24.
[0047] Specifically, an annular groove 2121 or multiple annular grooves 2121 distributed in an axial direction can be concavely formed on the inner wall of the second chamber 212, and the first sealing member 31 is arranged in the annular groove 2121, and each annular groove 2121 corresponds to at least one first sealing member 31.
[0048] Preferably, one of the first sealing members 31 is arranged on the circumferential surface of the probe 24 close to the cylinder cap 22, and one of the first sealing members 31 is arranged on the circumferential surface of the probe 24 close to the second cylinder 212, so as to seal the gap between the probe 24 and the inner wall of the second chamber 212 of the first cylinder 21.
[0049] In an embodiment, the inner diameter of the second chamber 212 is smaller than the inner diameter of the first chamber 211, so that the first end 231 of the second cylinder 23 abuts against the top wall of the first chamber 211. At least one first sealing member 31 is arranged at the connection between the first end 231 and the probe 24, so as to seal the gap between the probe 24, the second cylinder 23 and the inner wall of the second chamber 212 of the first cylinder 21.
[0050] The first sealing member 31 is preferably a sealing ring.
[0051] The amplifier 25 is arranged in the third chamber 232 of the second cylinder 23 and is electrically connected with the pin portion of the probe 24 extending in the third chamber 232. The amplifier 25 is preferably a preamplifier.
[0052] The installation mode of the spectrometer probe sealing structure of the utility model is as follows:
[0053] By fixing the probe 24 on the second cylinder 23, the amplifier 25 is inserted on the pin of the probe 24 exposed in the second cylinder 23, and a probe sealing ring (the first sealing member 31) is sleeved on the outer circumferential surface of the probe 24; similarly, another probe sealing ring (the first sealing member 31) is sleeved in the groove in the inner wall of the second chamber 211 of the first cylinder 21, and the sleeve sealing ring (the second sealing member 32) is sleeved on the stepped portion 213 of the first cylinder 21 after the cylinder cap 22 is assembled.
[0054] Then, the assembled second cylinder 23, probe 24, amplifier 25 and probe sealing ring are inserted into the first cylinder 21 and assembled into the vacuum cavity 11. In this way, the assembly of the sealed structure of the spectrometer probe is completed.
[0055] In the sealed structure of the spectrometer probe, the plurality of probe sealing rings realize the low-leakage sealing between the inner wall of the first cylinder 21 and the probe 24 and the second cylinder 22. The sleeve sealing ring realizes the low-leakage sealing between the outer wall of the second cylinder 23 and the inner wall of the vacuum cavity 11.
[0056] It can be understood that, since the probe 24 is very fragile, the probe sealing ring cannot be compressed with a large force to realize the low-leakage sealing. In order to achieve the expected beneficial effect, the plurality of probe sealing rings are used to seal the inner wall of the probe 24 and the first cylinder 21 respectively, so as to disperse the pressure of the probe 24. Further, the annular groove is arranged to accommodate the probe sealing ring, so as to further reduce the pressure of the probe 24 caused by the sealing ring. When the assembled second cylinder 23, probe 24, amplifier 25 and probe sealing ring are inserted into the first cylinder 21 and assembled into the vacuum cavity 11, the sealing of the fragile probe can be completed, and the sealed structure of the spectrometer probe of the utility model is formed.
[0057] Based on this, the utility model also provides a spectrometer with the sealed structure of the spectrometer probe.
[0058] Compared with the prior art, the sealed structure of the spectrometer probe and the spectrometer can realize the low-leakage vacuum sealing on the fragile probe, and improve the analysis and detection accuracy and sample adaptability of the spectrometer.
[0059] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.
[0060] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.
Claims
1. A spectrometer probe seal structure, comprising: include: The first cylinder is hollow in the axial direction, and a first chamber and a second chamber are distributed along its axial direction inside the first cylinder. The second cylinder is disposed in the first chamber of the first cylinder, and a third chamber is formed inside the second cylinder; A probe is disposed within the second chamber of the first cylinder, and a first sealing element is provided between the probe and the inner wall of the second chamber; and An amplifier is disposed in the third chamber of the second cylinder and is electrically connected to the probe.
2. The spectrometer probe seal structure of claim 1, wherein, Multiple first seals are disposed between the inner wall of the second chamber and the probe.
3. The spectrometer probe seal structure of claim 1, wherein, An annular groove is formed on the inner wall of the second chamber, and the first seal is disposed within the annular groove; and / or, The inner wall of the second chamber is divided into multiple annular grooves along its axial direction, and each annular groove is provided with a first sealing element.
4. The spectrometer probe seal structure of claim 1, wherein, The second cylinder has a first end facing the second chamber; The probe is disposed on the first end and partially passes through the first end, extends into the third chamber, and is connected to the amplifier.
5. The spectrometer probe seal structure of claim 4, wherein, The inner diameter of the first chamber is larger than the inner diameter of the second chamber; The first end of the second cylinder abuts against the top wall of the first chamber.
6. The spectrometer probe seal structure of claim 5, wherein, At least one first seal is disposed at the connection between the first end and the probe.
7. The spectrometer probe seal structure of claim 1, wherein, It also includes a cap, which is fitted onto the end of the first cylinder where the second chamber is located, and a detection window is formed on the cap.
8. The spectrometer probe seal structure of claim 1, wherein, It also includes a mounting housing, which forms a vacuum cavity, and the cavity wall of the vacuum cavity has through holes; The first cylinder is inserted into the through hole and a second sealing element is provided between the first cylinder and the through hole.
9. The spectrometer probe seal structure of claim 8, wherein, A raised step is provided on the outer circumferential surface of the first cylinder at the end where the first chamber is located; The outer diameter of the stepped portion is larger than the inner diameter of the through hole; The second seal is disposed between the stepped portion and the through hole.
10. A spectrometer, characterized by, It is provided with a spectrometer detector sealing structure as described in any one of claims 1-9.