CN217468333U - Photomultiplier tube shading device - Google Patents
Photomultiplier tube shading device Download PDFInfo
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- CN217468333U CN217468333U CN202123337491.3U CN202123337491U CN217468333U CN 217468333 U CN217468333 U CN 217468333U CN 202123337491 U CN202123337491 U CN 202123337491U CN 217468333 U CN217468333 U CN 217468333U
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- tube
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Abstract
The application relates to a photomultiplier shade, including tube housing body, a section of thick bamboo that is in the light, connecting portion and mount pad. Wherein, the lower extreme fixed connection mount pad of pipe cover body encloses with the mount pad and establishes and form sealed cavity. The connecting part is installed on the lateral wall of the pipe cover body, and the light blocking cylinder is fixedly connected with the connecting part. The pipe cover body, the connecting part and the light blocking barrel are respectively provided with a first light through hole, a second light through hole and a third light through hole which are sequentially communicated. Through being connected pipe casing body and connecting portion, connecting portion are connected with a section of thick bamboo that is in the light, and first logical unthreaded hole, second logical unthreaded hole and third logical unthreaded hole align in proper order, and the photomultiplier shade of this application embodiment compares in traditional technical scheme, the effect of good shading, simple structure, the realization of being convenient for compares with the mode of current mainstream, can not influence the connection of electrical apparatus signal, and need not to adopt the welding in the production process, the selection face of processing material is wide, and the technological requirement is simple, and processing is convenient, has practiced thrift the cost.
Description
Technical Field
The application relates to the field of photoelectric equipment, in particular to a photomultiplier shading device.
Background
The photomultiplier is an extremely sensitive photodetector and is widely applied to optical measurement and spectral analysis instruments, such as atomic absorption spectrophotometers, atomic fluorescence photometers, inductively coupled plasma emission spectrometers and the like.
Taking atomic absorption spectrophotometry as an example, characteristic spectral lines emitted by elements and the like enter monochromatic light splitting and then are reflected to a photomultiplier, and at the moment, signal light is very weak and is easily submerged by ambient light. The photomultiplier tubes must therefore be operated in an optical dark room. At present, the photomultiplier and all photoelectric devices are mainly shielded in a shading mode, external stray light can be shielded by the method, but connection of electrical signals is inconvenient, and debugging of a light path is not facilitated. Another common way is to place the photomultiplier tube in a T-tube, but the processing of such T-tubes involves welding, which places relatively high demands on the processing materials and processing techniques.
Disclosure of Invention
In view of this, the present application provides a photomultiplier tube shading device, which has a simple structure, does not need welding, does not affect the connection between electrical signals, and has a good shading effect.
According to one aspect of the application, a photomultiplier tube shading device is provided, which comprises a tube cover body, a light blocking barrel, a connecting part and a mounting seat; the lower end of the pipe cover body is fixedly connected with the mounting seat and forms a sealed cavity with the mounting seat in an enclosing manner; the sealed cavity is suitable for placing a matched photomultiplier;
the connecting part is arranged on the side wall of the pipe cover body, the light blocking cylinder is fixedly connected with the connecting part, and the connecting direction faces to one end far away from the pipe cover body;
the pipe cover body, the connecting part and the light blocking cylinder are respectively provided with a first light through hole, a second light through hole and a third light through hole, and the first light through hole, the second light through hole and the third light through hole are sequentially communicated.
In one possible implementation, the tube cover body is cylindrical, and the connecting part is annular;
the inner diameter of the connecting part is larger than the outer diameter of the pipe cover body.
In a possible implementation manner, the connecting part is further provided with a mounting hole; the mounting hole and the second light through hole are symmetrically arranged on the side wall of the connecting part.
In a possible implementation manner, more than 2 fixing holes are formed in the light blocking cylinder.
In a possible implementation manner, the number of the fixing holes is 2, and the 2 fixing holes are symmetrically arranged on two sides of the third light passing hole.
In a possible implementation manner, the first light passing hole, the second light passing hole, and the third light passing hole have the same shape, the second light passing hole and the third light passing hole have the same size, and the first light passing hole is smaller than the second light passing hole.
In one possible implementation, the length of the tube cover body is 2 times of the length of the light blocking cylinder.
In one possible implementation manner, the mounting seat is cylindrical, and the outer diameter of the mounting seat is smaller than that of the pipe cover.
In one possible implementation manner, the light blocking cylinder is connected with the connecting portion in a threaded manner.
In one possible implementation, the pipe cover body is connected with the mounting seat in a threaded manner.
The photomultiplier shade of the embodiment of the present disclosure aligns first light passing hole and second light passing hole when producing, then installs connecting portion on the lateral wall of tube cap body, and the lateral wall of the tube cap body after installation is closely attached to the lateral wall of the connecting portion, thereby achieving firm connection. And then aligning the third light through hole with the second light through hole, and tightly connecting the light blocking cylinder with the connecting part through screws after aligning the light through holes, so that the pipe cover body, the connecting part and the light blocking cylinder are firmly connected together. And then the photoelectric doubling tube is arranged at the upper end of the mounting seat, and the upper end of the mounting seat is fixedly connected with the lower end of the tube cover body, so that the photoelectric doubling tube is enclosed in the tube cover body. When the photoelectric doubling tube is used, the photoelectric doubling tube is positioned inside the tube cover body, the first light through hole, the second light through hole and the third light through hole are aligned to a signal light path, the signal light passes through the first light through hole, the second light through hole and the third light through hole can be incident into the photoelectric doubling tube, peripheral stray light can be shielded by the light blocking tube, and therefore a good shading effect is achieved.
Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.
Fig. 1 shows a side sectional view of a photomultiplier tube shading device of an embodiment of the present application;
fig. 2 is a main body structural view showing a photomultiplier tube shading device according to an embodiment of the present application;
fig. 3 is a top sectional view showing a photomultiplier tube shading device according to an embodiment of the present application.
Detailed Description
Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention or for simplicity in description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.
Fig. 1 to 3 show a side sectional view of a photomultiplier tube shade 100, a main body structural view of the photomultiplier tube shade 100, and an upper sectional view of the photomultiplier tube shade 100 according to an embodiment of the present application. As shown in fig. 1 to 3, the photomultiplier tube shading device 100 includes: tube cover body 110, light blocking cylinder 120, connecting portion 130, and mount 140. Wherein, the lower extreme fixed connection mount pad 140 of pipe casing body 110, specifically, the connected mode of pipe casing body 110 and mount pad 140 is threaded connection, through screwed connection, and pipe casing body 110 encloses with mount pad 140 and establishes and form sealed cavity, and sealed cavity is applicable to and places the photomultiplier 150 of assorted size. The connecting portion 130 is installed on the sidewall of the tube cover body 110, and the light blocking cylinder 120 is fixedly connected to the connecting portion 130, and the connecting direction faces to an end away from the tube cover body 110. Specifically, the connection mode can be threaded connection, and the structure is simple and convenient to realize. The tube cover body 110, the connecting portion 130 and the light blocking barrel 120 are respectively provided with a first light passing hole 111, a second light passing hole 131 and a third light passing hole 121, and the first light passing hole 111, the second light passing hole 131 and the third light passing hole 121 are sequentially communicated.
When the photomultiplier tube shading device 100 according to the embodiment of the present disclosure is installed, the first light passing hole 111 and the second light passing hole 131 are aligned first, then the connecting portion 130 is installed on the sidewall of the tube cover body 110, and the outer sidewall of the installed tube cover body 110 is tightly attached to the inner sidewall of the connecting portion 130, so as to achieve firm connection. Then, the third light passing hole 121 and the second light passing hole 131 are aligned, and after 3 light passing holes are aligned, the light blocking cylinder 120 and the connecting portion 130 are tightly connected together by screws, so that the tube cover body 110, the connecting portion 130 and the light blocking cylinder 120 are firmly connected together. Then, the photomultiplier is installed to the upper end of the mounting base 140, and the upper end of the mounting base 140 is fixedly connected to the lower end of the tube cover body 110, so that the photomultiplier is enclosed inside the tube cover body 110. When the photoelectric doubling tube is used, the photoelectric doubling tube is positioned inside the tube cover body 110, the first light through hole 111, the second light through hole 131 and the third light through hole 121 are aligned to a signal light path, the signal light can be incident into the photoelectric doubling tube 150 through the first light through hole 111, the second light through hole 131 and the third light through hole 121, peripheral stray light can be shielded by the light blocking tube 120, and therefore a good light blocking effect is achieved.
In one possible implementation, the tubular housing body 110 is cylindrical, the connecting portion is annular, and the inner diameter of the connecting portion 130 is larger than the outer diameter of the tubular housing body 110. By setting the inner diameter of the connection portion 130 to be larger than the inner diameter of the tube cover body 110, it is possible to make the installation of the connection portion 130 easier. The shape of the tube housing body 110 and the shape of the connecting portion 130 are not limited thereto, and only the design is reasonable, so as to meet the requirement of placing the photomultiplier tube 150, which is not described herein.
In a possible implementation manner, the connecting portion 130 is further provided with a mounting hole 112, and the mounting hole 112 and the second light passing hole 131 are symmetrically arranged on a side wall of the connecting portion 130. Specifically, the connecting portion 130 is screwed to the tube housing body 110, after the second light passing hole 131 is aligned to the first light passing hole 111, the locking screw is screwed at the position of the mounting hole 112, and under the action of the locking force, the locking screw presses the outer wall of the tube housing body 110 and the inner wall of the light blocking tube 120, so that the connecting portion 130 is firmly connected to the tube housing body 110, and the tube housing is simple in structure, convenient to implement and easy to replace.
In one possible implementation, the light blocking cylinder 120 has more than 2 fixing holes 122. Further, the number of the fixing holes 122 is 2, and the 2 fixing holes 122 are symmetrically formed on two sides of the third light passing hole 121. Further, the fixing hole 122 is a threaded hole, and the light blocking cylinder 120 is connected to the connecting portion 130 by a threaded connection. The light blocking cylinder 120 is firmly connected with the connecting part 130 through screws, and the light blocking cylinder is simple in structure and convenient to maintain and replace. It should be noted that the number and the opening positions of the threaded holes can be flexibly changed according to actual situations, and are not described herein.
In a possible implementation manner, the first light passing hole 111, the second light passing hole 131, and the third light passing hole 121 are the same in shape, specifically, the first light passing hole 111, the second light passing hole 131, and the third light passing hole 121 are all rounded rectangles in shape, the second light passing hole 131 and the third light passing hole 121 are the same in size, and the first light passing hole 111 is smaller than the second light passing hole 131. However, the sizes and shapes of the first light passing hole 111, the second light passing hole 131 and the third light passing hole 121 are not limited thereto, and may be flexibly changed according to the circumstances, for example, the size of the first light passing hole 111 may be equal to the size of the second light passing hole 131, and the shapes are all right-angled rectangles.
In one possible implementation, the length of the tube housing body 110 is 2 times the length of the light-blocking barrel 120. But not limited to this, can carry out the flexibility according to the situation and change, reasonable in design.
In one possible implementation, the mounting base 140 has a cylindrical shape, and the outer diameter of the mounting base 140 is smaller than the outer diameter of the pipe cover. But not limited to this, can carry out the flexibility according to the situation and change, reasonable in design.
It should be noted that, although the photomultiplier tube shading device 100 is described above by taking fig. 1 to 3 as an example, those skilled in the art will understand that the present application should not be limited thereto. In fact, the user can flexibly set the structure of the photomultiplier tube shade apparatus 100 according to personal preference and/or practical application scenarios as long as the practical requirements can be satisfied.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A photomultiplier shading device is characterized by comprising a tube cover body, a light blocking cylinder, a connecting part and a mounting seat; the lower end of the pipe cover body is fixedly connected with the mounting seat and forms a sealed cavity with the mounting seat in an enclosing manner; the sealed cavity is suitable for placing a matched photomultiplier;
the connecting part is arranged on the side wall of the pipe cover body, the light blocking cylinder is fixedly connected with the connecting part, and the connecting direction faces to one end far away from the pipe cover body;
the pipe cover body, the connecting part and the light blocking cylinder are respectively provided with a first light through hole, a second light through hole and a third light through hole, and the first light through hole, the second light through hole and the third light through hole are sequentially communicated.
2. The photomultiplier tube shading device according to claim 1, wherein the tube cover body has a cylindrical shape, and the connecting portion has an annular shape;
the inner diameter of the connecting part is larger than the outer diameter of the pipe cover body.
3. The photomultiplier tube shading device according to claim 1, wherein the connecting portion is further provided with a mounting hole; the mounting hole and the second light through hole are symmetrically arranged on the side wall of the connecting part.
4. The photomultiplier tube shading device according to claim 1, wherein the light blocking tube has more than 2 fixing holes.
5. The photomultiplier tube shading device according to claim 4, wherein the number of the fixing holes is 2, and 2 fixing holes are symmetrically formed on both sides of the third light passing hole.
6. The photomultiplier tube shading device according to claim 1, wherein the first light passing hole, the second light passing hole and the third light passing hole have the same shape, the second light passing hole and the third light passing hole have the same size, and the first light passing hole is smaller than the second light passing hole.
7. The photomultiplier tube shading device according to claim 1, wherein the tube housing body has a length 2 times the length of the light-blocking barrel.
8. The photomultiplier tube shading device according to claim 2, wherein the mounting base has a cylindrical shape, and an outer diameter of the mounting base is smaller than an outer diameter of the tube cover.
9. The photomultiplier tube shading device according to any one of claims 1 to 8, wherein the light blocking cylinder is connected to the connecting portion by a screw thread.
10. The photomultiplier tube shading device according to any one of claims 1 to 8, wherein the tube cover body is screwed to the mount base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123337491.3U CN217468333U (en) | 2021-12-27 | 2021-12-27 | Photomultiplier tube shading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123337491.3U CN217468333U (en) | 2021-12-27 | 2021-12-27 | Photomultiplier tube shading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217468333U true CN217468333U (en) | 2022-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123337491.3U Active CN217468333U (en) | 2021-12-27 | 2021-12-27 | Photomultiplier tube shading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217468333U (en) |
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2021
- 2021-12-27 CN CN202123337491.3U patent/CN217468333U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230609 Address after: No. 12, Baofu Road, Zhongguancun Science and Technology City, Baodi District, Tianjin 301800 Patentee after: Lai Bo Tai Ke (Tianjin) Technology Co.,Ltd. Address before: 100015 east north side, 5th floor, building 5, yard 1, Jiuxianqiao East Road, Chaoyang District, Beijing Patentee before: BEIJING ZHONGHE MEASUREMENT INSTRUMENT CO.,LTD. |
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| TR01 | Transfer of patent right |