CN213816059U - Reflectron for use in ion mass analyzer - Google Patents
Reflectron for use in ion mass analyzer Download PDFInfo
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- CN213816059U CN213816059U CN202023210892.8U CN202023210892U CN213816059U CN 213816059 U CN213816059 U CN 213816059U CN 202023210892 U CN202023210892 U CN 202023210892U CN 213816059 U CN213816059 U CN 213816059U
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Abstract
The utility model discloses a reflector for among ion mass analyzer, include: the electrode plate is annular and is coaxially arranged along the longitudinal direction; the resistors are arranged between the adjacent electrode plates and are electrically connected with the adjacent electrode plates; the connecting assembly comprises a supporting block and a connecting block, wherein the supporting block is arranged between adjacent electrode plates; and the connecting pin is longitudinally arranged and is used for connecting two adjacent supporting blocks at two sides of each electrode plate. The utility model has smart structure, is convenient for processing and manufacturing related parts in batches, and reduces the equipment cost; the contact area between the support block and the electrode plate is large, so that the assembled integral structure is stable, and the mechanical strength is excellent; the high-precision positioning structure is adopted, so that the relative position installation precision among the electrode plates is higher, the electric field is more uniform, and the detection quality of the mass spectrometer is favorably improved.
Description
Technical Field
The utility model belongs to the technical field of the mass spectrograph technique and specifically relates to a reflector for among ion mass analyzer is related to.
Background
The mass spectrometer is an instrument for separating and detecting different isotopes, and mainly comprises an ion source, a mass analyzer and an ion detector. During detection, high-energy electron flow is adopted to bombard sample molecules, so that the sample molecules lose electrons and are changed into molecular ions and fragment ions with positive charges, then the ion flow reaches a detector through a mass analyzer, and signal processing is carried out according to the time sequence of different ions reaching the detector to obtain a corresponding mass spectrogram. The reflector in the mass analyzer consists of a plurality of coaxially arranged annular electrode plates and resistors connected between the adjacent electrode plates, and ions in the reflector are decelerated to be static in a uniform electric field and then accelerated in the opposite direction to reach the original kinetic energy again; static means that the slightest field imbalance has a significant effect on the ions and therefore the field must be generated very accurately. In order to make the electric field generated by the reflector uniform, it is necessary to control the mounting accuracy of each electrode sheet. In order to fix the position of the electrode plate, a mode of penetrating a separation block on a connecting column is mostly adopted at present. Because the electrode plates are thin, the electrode plates are easy to generate torsion deformation when being installed by adopting the connection mode, and the uniformity of an electric field is influenced, so that the ion detection effect of the mass analyzer is influenced; secondly, the diameter of the mounting hole on the electrode plate is larger than that of the mounting hole of the connecting column, so that a wire hole gap exists, the phenomenon of decentration exists after the electrode plates are mounted, the uniformity of an electric field is influenced, and the ion detection effect of the mass analyzer is influenced.
Disclosure of Invention
In order to solve the above problem, the utility model provides a design benefit, stable in structure, high accuracy are arranged in reflector among the ion mass analyzer specifically can take following technical scheme:
a reflector for among ion mass analyzer, include
The electrode plate is annular and is coaxially arranged along the longitudinal direction;
the resistors are arranged between the adjacent electrode plates and are electrically connected with the adjacent electrode plates;
a connecting assembly comprising
The supporting block is arranged between the adjacent electrode plates;
and the connecting pins are longitudinally arranged and are used for connecting two adjacent supporting blocks at two sides of each electrode plate.
The connecting assembly further comprises a supporting pin which is arranged along the longitudinal direction and used for keeping the distance between two adjacent electrode plates to be fixed.
The connecting assembly further comprises a positioning column, and the positioning column is used for connecting the electrode plate and an adjacent supporting block above the electrode plate.
The supporting blocks are of the same structure and are of split ring structures with central angles larger than 180 degrees, and the adjacent supporting blocks are arranged in mirror symmetry; the top surface of each supporting block is provided with three positioning columns, the bottom surface of each supporting block is provided with threaded holes which are coaxial with the positioning columns, and a connecting through hole which is small in top and large in bottom is arranged between every two adjacent positioning columns respectively.
The positioning columns comprise first positioning columns located on the symmetrical center lines of the supporting blocks and second positioning columns symmetrically arranged at two ends of the supporting blocks, and the connecting through holes and the adjacent second positioning columns are symmetrically arranged along the mirror image center line of the supporting blocks.
The connecting pin is a stepped connecting column matched with the connecting through hole, an external thread matched with a threaded hole at the bottom of the supporting block is arranged on the outer wall of the small end of the connecting pin, and a screwed hole is formed at the bottom of the large end of the connecting pin.
The outer diameter of the second positioning column is matched with the inner diameter of the large head end of the connecting through hole.
The support pin is arranged on a stepped connecting column at the opening of the support block, an external thread matched with a threaded hole at the bottom of the support block is arranged on the outer wall of the small end of the support pin, a vertical inserting hole matched with the first positioning column is formed in the bottom of the large end, and a transverse inserting hole used for penetrating through the locking piece is formed in the middle of the large end.
And the electrode sheet is provided with connecting holes corresponding to the positioning columns, the connecting pins and the supporting pins.
The inner aperture of the electrode plate is sequentially increased from top to bottom.
The reflector used in the ion mass analyzer has ingenious structure, is convenient for processing and manufacturing related parts in batches, and reduces the equipment cost; the contact area between the support block and the electrode plate is large, so that the assembled integral structure is stable, and the mechanical strength is excellent; the high-precision positioning structure is adopted, so that the relative position installation precision among the electrode plates is higher, the electric field is more uniform, and the detection quality of the mass spectrometer is favorably improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a view from a-a in fig. 1.
Fig. 3 is a schematic perspective view of adjacent three segments of fig. 1 (without resistors).
Fig. 4 and 5 are exploded views of fig. 3.
FIG. 6 is a front view of the support block of FIG. 1.
Fig. 7 is a top view of fig. 6.
Fig. 8 is a bottom view of fig. 6.
Fig. 9 is a view from B-B in fig. 8.
Fig. 10 is a perspective view of the connecting pin of fig. 1.
Fig. 11 is a cross-sectional view of fig. 10.
Fig. 12 is a perspective view of the support pin of fig. 1.
Fig. 13 is a cross-sectional view of fig. 12.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments of the present invention are based on the technical solutions of the present invention and are described in detail, but the present invention is not limited to the following embodiments.
As shown in fig. 1 to 13, a reflector for use in an ion mass analyzer, including along vertical coaxial setting's cyclic annular electrode slice 1, all install a level to resistance 2 between per two adjacent electrode slices 1, evenly set up a resistance 2 between adjacent electrode slices 1 and carry out the electricity and connect, adjacent electrode slice 1 then fixes a position the installation through coupling assembling. The connecting component comprises a supporting block 3, a connecting pin 4, a supporting pin 5 and the like.
Specifically, a supporting block 3 is installed between every two electrode plates 1, all the supporting blocks 3 are identical in structure and are split ring structures with central angles larger than 180 degrees, and the supporting blocks 3 are provided with openings so as to reserve installation positions of the resistors 2. As shown in fig. 7 and 8, each support block 3 is a bilateral symmetry structure, the symmetry center line m passes through the center o of the support block 3, a straight line passing through the center o and perpendicular to the symmetry center line m is a mirror image center line n, every two adjacent support blocks 3 located on the upper side and the lower side of the same electrode plate 1 are arranged along mirror image symmetry, that is, the upper support block 3 is installed on the left side of the electrode plate 1, the lower support block 3 is installed on the right side of the electrode plate 1, and the upper support block 3 and the lower support block 3 are concentrically arranged and are in a face-to-face opposite structure in which the mirror image center lines n are mutually overlapped. The top surface of each supporting block 3 is provided with three positioning columns, which comprise a first positioning column 6.1 and two second positioning columns 6.2, the first positioning column 6.1 is located on the symmetrical center line m, and the second positioning columns 6.2 are symmetrically arranged at two ends of the supporting block 3 close to the opening avoiding position (the symmetry here means that the two second positioning columns 6.2 are symmetrically arranged along the symmetrical center line m). The first positioning column 6.1 and the second positioning column 6.2 can be arranged in the connecting hole 9 of the adjacent electrode plate 1 above the first positioning column and the second positioning column in a penetrating manner, so that the first positioning column and the second positioning column are convenient to position and mount. Threaded holes 7 which are respectively coaxial with the positioning columns are formed in the bottom surface of each supporting block 3, a connecting through hole 8 which is small in top and large in bottom is formed between every two adjacent positioning columns, and each connecting through hole 8 and the adjacent second positioning column 6.2 are symmetrically arranged along the mirror image center line n of each supporting block 3. Therefore, when two adjacent support blocks 3 are mounted face to face, the connecting through-hole 8 of the support block 3 located below corresponds to the threaded hole 7 of the support block 3 located above.
The connecting pin 4 is arranged along the longitudinal direction and is used for connecting two adjacent supporting blocks 3 at two sides of each electrode plate 1. All the connecting pins 4 are of the same structure and are stepped connecting columns matched with the connecting through holes 8, first external threads 3.1 matched with threaded holes 7 at the bottom of the supporting block 3 are arranged on the outer wall of the small end of each connecting pin, and a screwed hole 3.2 is formed in the bottom of the large end.
The support pin 5 is disposed at an opening of the support block 3 along a longitudinal direction, and is mainly used for keeping a fixed distance between two adjacent electrode plates 1 to support one side of the resistor 2, and simultaneously connecting one electrode plate 1 disposed immediately above the support pin 5 with one support pin 5. All the supporting pins 5 have the same structure and are stepped connecting pins with the same size, second external threads 5.1 matched with threaded holes 7 at the bottom of the supporting block 3 are arranged on the outer wall of the small end of each supporting pin, the height of the large end is equal to the thickness of the supporting block 3, vertical inserting holes 5.2 matched with the first positioning posts 6.1 are formed in the bottom of the large end, and transverse inserting holes 5.3 used for penetrating through locking pieces are formed in the middle of the large end.
For convenience of installation, the connecting hole 9 on each electrode plate 1 further comprises a through hole corresponding to the connecting pin 4 and the supporting pin 5, and the outer diameter of the second positioning column 6.2 is matched with the inner diameter of the large end of the connecting through hole 8.
The following description will be given by taking fig. 4 and 5 as an example to illustrate the installation process of the present invention, which specifically includes the following steps:
installing an electrode plate 1a and a supporting block 3 a: firstly, correspondingly clamping a connecting hole 9a on an electrode plate 1a and positioning columns (comprising a first positioning column 6.1a and a second positioning column 6.2 a) on a supporting block 3a respectively to enable the two to be tightly matched and installed together; then, the electrode sheet 1a and the support block 3a are fixed on a connection socket mounted on the top of the flight tube of the mass analyzer using a connection pin 4a and a support pin 5a, the connection pin 4a being located in a connection through hole 8a of the support block 3a, and the support pin 5a being located at an opening of the support block 3 a. Mounting an electrode plate 1b and a supporting block 3 b: firstly, correspondingly clamping a connecting hole 9b on an electrode plate 1b and positioning columns (comprising a first positioning column 6.1b and a second positioning column 6.2 b) on a supporting block 3b respectively to enable the two to be tightly matched and installed together; then, fixing the electrode plate 1b and the supporting block 3b on the supporting block 3a by using a connecting pin 4b and a supporting pin 5b, wherein the supporting block 3a and the supporting block 3b are opposite in opening, a first positioning column 6.1b on the top surface of the supporting block 3b is correspondingly arranged in a vertical insertion hole 5.2a at the bottom of the supporting pin 5a, and a second positioning column 6.2b on the top surface of the supporting block 3b is positioned in a big head end of a connecting through hole 8a in the supporting block 3 a; the connecting pin 4b is positioned in the connecting through hole 8b of the supporting block 3b, and the small head end at the top of the connecting pin 4b is screwed in the bottom threaded hole 7a corresponding to the second positioning column 6.2a on the supporting block 3 a; the supporting pin 5b is located at the opening of the supporting block 3b, and the top small end of the supporting pin 5b is screwed in the bottom threaded hole corresponding to the first positioning column 6.1a on the supporting block 3 a. Mounting the electrode plate 1c and the supporting block 3 c: firstly, correspondingly clamping a connecting hole 9c on an electrode plate 1c and positioning columns (comprising a first positioning column 6.1c and a second positioning column 6.2 c) on a supporting block 3c respectively to enable the two to be tightly matched and installed together; then, the electrode sheet 1c and the support block 3c are fixed on the support block 3b by using the connection pin 4c and the support pin 5c, wherein the support block 3c and the support block 3b are opposite to each other in opening and are aligned with the opening positions of the support blocks 3a arranged at intervals up and down; the first positioning column 6.1c on the top surface of the supporting block 3c is correspondingly arranged in the vertical insertion hole at the bottom of the supporting pin 5b, and the second positioning column 6.2c on the top surface of the supporting block 3c is positioned in the large head end of the connecting through hole 8b in the supporting block 3 b; the connecting pin 4c is positioned in the connecting through hole of the supporting block 3c, and the small head end at the top of the connecting pin 4c is screwed in the bottom threaded hole 7b corresponding to the second positioning column 6.2b on the supporting block 3 b; the supporting pin 5c is located at the opening of the supporting block 3c, and the top small end of the supporting pin 5c is screwed in the bottom threaded hole corresponding to the first positioning column 6.1b on the supporting block 3 b. Fourthly, installing the rest electrode plates 1 and the rest support blocks 3 layer by layer according to the method, and finally installing the last electrode plate 1 on the support block 3 at the lowest layer by using the connecting pin 4 to complete the installation of the reflector.
Furthermore, the inner hole diameter of the electrode sheet 1 forming the reflector is sequentially increased from top to bottom, so that the inner cavity of the reflector is in a cone-like shape with a small top and a large bottom. Because the incident and emergent routes of ions in the ion reflector are similar to parabolas, theoretically, the smaller the size of the middle opening of the electrode plate is, the higher the electric field intensity is, and by gradually reducing the size of the opening of the superposed electrode plates from bottom to top, the size of the opening of the electrode plates can be reduced as much as possible under the condition of avoiding the ions from impacting the electrode plates, so that the metal area of the electrode plates is increased, the uniformity of an electric field is improved, the optimal reflection efficiency is achieved, the length of the reflector is minimized, and the use number of the electrode plates is minimized under the condition of being capable of generating the same voltage.
It should be noted that in the description of the present invention, terms of orientation or positional relationship such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Claims (10)
1. A reflectron for use in an ion mass analyzer, characterized by: comprises that
The electrode plate is annular and is coaxially arranged along the longitudinal direction;
the resistors are arranged between the adjacent electrode plates and are electrically connected with the adjacent electrode plates;
a connecting assembly comprising
The supporting block is arranged between the adjacent electrode plates;
and the connecting pins are longitudinally arranged and are used for connecting two adjacent supporting blocks at two sides of each electrode plate.
2. A reflectron for use in an ion mass analyzer as defined in claim 1, in which: the connecting assembly further comprises a supporting pin which is arranged along the longitudinal direction and used for keeping the distance between two adjacent electrode plates to be fixed.
3. A reflectron as set forth in claim 2, for use in an ion mass analyzer, characterized in that: the connecting assembly further comprises a positioning column, and the positioning column is used for connecting the electrode plate and an adjacent supporting block above the electrode plate.
4. A reflectron as set forth in claim 3, for use in an ion mass analyzer, characterized in that: the supporting blocks are of the same structure and are of split ring structures with central angles larger than 180 degrees, and the adjacent supporting blocks are arranged in mirror symmetry; the top surface of each supporting block is provided with three positioning columns, the bottom surface of each supporting block is provided with threaded holes which are coaxial with the positioning columns, and a connecting through hole which is small in top and large in bottom is arranged between every two adjacent positioning columns respectively.
5. The reflectron of claim 4, in which: the positioning columns comprise first positioning columns located on the symmetrical center lines of the supporting blocks and second positioning columns symmetrically arranged at two ends of the supporting blocks, and the connecting through holes and the adjacent second positioning columns are symmetrically arranged along the mirror image center line of the supporting blocks.
6. The reflectron of claim 4, in which: the connecting pin is a stepped connecting column matched with the connecting through hole, an external thread matched with a threaded hole at the bottom of the supporting block is arranged on the outer wall of the small end of the connecting pin, and a screwed hole is formed at the bottom of the large end of the connecting pin.
7. A reflectron as set forth in claim 5, for use in an ion mass analyzer, characterized in that: the outer diameter of the second positioning column is matched with the inner diameter of the large head end of the connecting through hole.
8. A reflectron as set forth in claim 5, for use in an ion mass analyzer, characterized in that: the support pin is arranged on a stepped connecting column at the opening of the support block, an external thread matched with a threaded hole at the bottom of the support block is arranged on the outer wall of the small end of the support pin, a vertical inserting hole matched with the first positioning column is formed in the bottom of the large end, and a transverse inserting hole used for penetrating through the locking piece is formed in the middle of the large end.
9. A reflectron as set forth in claim 3, for use in an ion mass analyzer, characterized in that: and the electrode sheet is provided with connecting holes corresponding to the positioning columns, the connecting pins and the supporting pins.
10. A reflectron for use in an ion mass analyzer as defined in claim 1, in which: the inner aperture of the electrode plate is sequentially increased from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023210892.8U CN213816059U (en) | 2020-12-28 | 2020-12-28 | Reflectron for use in ion mass analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023210892.8U CN213816059U (en) | 2020-12-28 | 2020-12-28 | Reflectron for use in ion mass analyzer |
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| Publication Number | Publication Date |
|---|---|
| CN213816059U true CN213816059U (en) | 2021-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023210892.8U Active CN213816059U (en) | 2020-12-28 | 2020-12-28 | Reflectron for use in ion mass analyzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116741619A (en) * | 2023-08-14 | 2023-09-12 | 成都艾立本科技有限公司 | Parallel electrode device and processing method |
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2020
- 2020-12-28 CN CN202023210892.8U patent/CN213816059U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116741619A (en) * | 2023-08-14 | 2023-09-12 | 成都艾立本科技有限公司 | Parallel electrode device and processing method |
| CN116741619B (en) * | 2023-08-14 | 2023-10-20 | 成都艾立本科技有限公司 | Parallel electrode device and processing method |
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