CN219383527U - Electron multiplier storage device - Google Patents
Electron multiplier storage device Download PDFInfo
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- CN219383527U CN219383527U CN202223101699.XU CN202223101699U CN219383527U CN 219383527 U CN219383527 U CN 219383527U CN 202223101699 U CN202223101699 U CN 202223101699U CN 219383527 U CN219383527 U CN 219383527U
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Abstract
The utility model discloses an electron multiplier storage device, which comprises a storage box, a drying agent, a carbon dioxide adsorbent, a polytetrafluoroethylene adsorbent box, a polytetrafluoroethylene partition plate and a sealing bag, wherein the drying agent and the carbon dioxide adsorbent which are mixed or separately placed are placed in the adsorbent box at the bottom of the storage box; the electron multiplier is arranged on the polytetrafluoroethylene separator by screws, and the polytetrafluoroethylene separator is fixed above the adsorbent box; the top cover of the storage box is fixed on the top of the storage box by screws; the storage box is placed in a sealed bag which is vacuumized or filled with high-purity inert gas. The electron multiplier storage device disclosed by the utility model has the advantages of simple structure, good effect of isolating water vapor and carbon dioxide and low application cost, and can solve the problem that the effective storage of the electron multiplier cannot be realized in the prior art.
Description
Technical Field
The utility model belongs to the technical field of vacuum electronic devices, and particularly relates to an electron multiplier storage device.
Background
The electron multiplier is a vacuum electronic device with weak signal amplification function, and has wide and important application in the fields of mass spectrometry, aerospace, navigation positioning, low-light night vision, space detection, microscopic analysis and the like.
The secondary electron emission film is used as a core component of the electron multiplier, and the secondary electron emission characteristic of the secondary electron emission film has a critical influence on performances such as gain and service life of the electron multiplier.
The magnesium oxide (MgO) film has a high secondary electron emission coefficient and a high particle bombardment resistance, and is a secondary electron emitter most commonly used in electron multipliers. However, when the MgO film is exposed to air, it is extremely susceptible to chemical reaction with moisture, carbon dioxide, and other substances in the air, resulting in a decrease in the secondary electron emission coefficient of the film, and a significant decrease in the gain of an electron multiplier using the MgO film as a secondary electron emitter during storage. Therefore, a clean and dry storage environment is formed, the MgO film is prevented from being contacted with substances such as water, carbon dioxide and the like to react, and the method is a basic way for inhibiting the performance degradation of the electron multiplier based on the MgO film and prolonging the storage time of a device. Whereas existing electron multiplier storage methods typically choose to place the electron multiplier in a high vacuum stainless steel storage tank or glass tube for vacuum storage. However, the electron multiplier is stored in vacuum by adopting a high-vacuum stainless steel storage tank, the requirements on the exhausting and sealing-off processes are high, the operation is complex, a small titanium pump is also required to be arranged on the storage tank to maintain the internal vacuum, the transportation is inconvenient, and the use cost is high; and the electron multiplier is stored in vacuum by adopting the glass tube, and substances such as carbon-containing gas generated by a fire head in the sealing process of the glass tube easily cause the surface pollution of the MgO film, so that the performance of the electron multiplier is deteriorated. Therefore, the effective and low-cost storage of the electron multiplier cannot be realized by adopting the prior art, so that the application and popularization of the electron multiplier based on the MgO film are restricted.
Disclosure of Invention
The utility model aims to provide an electron multiplier storage device and a storage method, which can effectively inhibit the performance degradation of the electron multiplier caused by the exposure of air to a magnesium oxide film, prolong the storage time of the electron multiplier, and solve the problems that the prior art cannot realize the effective storage of the electron multiplier, and the method is simple and convenient to operate, quick and low in application cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an electron multiplier storage device comprises a storage box, a storage box top cover, a polytetrafluoroethylene separator, a carbon dioxide adsorbent, a desiccant, a polytetrafluoroethylene adsorbent box and a sealing bag; the carbon dioxide adsorbent and the desiccant are mixed and positioned in the polytetrafluoroethylene adsorbent box; the polytetrafluoroethylene adsorbent box is positioned at the bottom of the storage box; a polytetrafluoroethylene separator for installing an electron multiplier is arranged above a polytetrafluoroethylene adsorbent box, a storage box top cover is arranged at the top of the storage box, and a sealing bag is wrapped on the periphery of the storage box.
As another aspect, an electron multiplier storage device includes a storage case, a storage case top cover, a polytetrafluoroethylene separator, a carbon dioxide adsorbent, a desiccant, a polytetrafluoroethylene adsorbent case, a polytetrafluoroethylene desiccant case, and a sealed bag; the drier is positioned in a polytetrafluoroethylene drier box, the polytetrafluoroethylene drier box is positioned at the central position of a polytetrafluoroethylene adsorbent box, and the carbon dioxide adsorbent is positioned around the polytetrafluoroethylene drier box; the polytetrafluoroethylene adsorbent box is positioned at the bottom of the storage box; a polytetrafluoroethylene separator for installing an electron multiplier is arranged above a polytetrafluoroethylene adsorbent box, a storage box top cover is arranged at the top of the storage box, and a sealing bag is wrapped on the periphery of the storage box.
Further, the storage box and the top cover of the storage box are made of stainless steel, ABS plastic or polytetrafluoroethylene materials.
Further, the surfaces of the storage box and the top cover of the storage box are provided with a plurality of through holes, and the aperture of the through holes is 4-8mm.
Further, the polytetrafluoroethylene separator has a plurality of through holes on the surface, and the aperture of the through holes is 3-6mm.
Further, the top parts of the polytetrafluoroethylene adsorbent box and the polytetrafluoroethylene drying agent box are respectively provided with a first cover plate and a second cover plate which can be opened, and the surfaces of the polytetrafluoroethylene adsorbent box and the polytetrafluoroethylene drying agent box as well as the first cover plate and the second cover plate are respectively provided with a plurality of through holes, wherein the aperture of each through hole is 1-2mm.
Further, the mass ratio of the carbon dioxide adsorbent to the drying agent in the polytetrafluoroethylene adsorbent box is 1:2-1:4, the carbon dioxide adsorbent and the drying agent are granular, and the grain diameter is 3-6mm.
Further, the drying agent is one or more of allochroic silica gel, soda lime, sodium hydroxide solid, calcium oxide, anhydrous calcium chloride and anhydrous copper sulfate.
Further, the carbon dioxide adsorbent is one or more of calcium hydroxide, activated carbon, zeolite molecular sieve and metal-organic framework compound.
Further, the inside of the sealed bag provided with the storage box is in a vacuum state, and the vacuum degree is 10 -1 -10 3 Pa, or high purity nitrogen, argon or helium is filled in the sealed bag, the purity is higher than 99.99%, and the air pressure reaches 1-1.3 atmospheres.
Compared with the prior art, the utility model has at least the following beneficial technical effects:
the utility model relates to an electron multiplier storage device, which is characterized in that a plurality of through holes are arranged on the surfaces of a storage box, a polytetrafluoroethylene drying agent box and a polytetrafluoroethylene adsorbent box and on polytetrafluoroethylene partition boards, the storage box filled with carbon dioxide adsorbent, drying agent and electron multiplier is placed in a sealed bag, and the inside of the sealed bag filled with the storage box is vacuumized (the vacuum degree reaches 10) -1 -10 3 Pa) or high-purity inert gas (the purity is higher than 99.99 percent, the air pressure reaches 1-1.3 atmospheres) is filled and sealed, so that the MgO film is isolated from air in the storage process of the electron multiplier, a clean and dry storage environment is formed in the storage box, and the performance degradation of the electron multiplier caused by the reaction of the MgO film, water and carbon dioxide is effectively inhibited.
Furthermore, the carbon dioxide adsorbent and the drying agent are granular, the grain diameter is 3-6mm, proper exhaust channels are arranged among the grains in the grain diameter range, the exhaust is easy, the surface area of the grains is larger, and the adsorption of more water and carbon dioxide is facilitated; the mass ratio of the carbon dioxide adsorbent to the desiccant is 1:2-1:4, and the carbon dioxide adsorbent and the desiccant with the determined total volume have the best adsorption effect on water and carbon dioxide released by the infiltration sealing bag and the internal materials within the mass ratio range; for the carbon dioxide adsorbent and the desiccant separate placing mode, the carbon dioxide adsorbent positioned outside can adsorb a small amount of water vapor, the existence of water molecules can further improve the carbon dioxide adsorption capacity of the carbon dioxide adsorbent, and the desiccant positioned in the center of the adsorbent box is utilized to have a desiccant with higher mass proportion, so that the water vapor in the storage device can be efficiently adsorbed, and therefore, the storage device of the carbon dioxide adsorbent and the desiccant separate placing mode can better inhibit the reduction of the performance of the electron multiplier caused by the reaction of carbon dioxide, water and MgO film.
Further, the electron multiplier is arranged on the polytetrafluoroethylene separator, the polytetrafluoroethylene separator provided with the electron multiplier is fixed in the storage box through screws, and meanwhile, the polytetrafluoroethylene adsorbent box is fixed at the bottom of the storage box, so that shaking and collision of each part inside the electron multiplier and the storage box in the process of storing and transporting the electron multiplier are prevented, and damage to devices and parts is avoided.
Further, the storage box is placed in the sealing bag, the internal space of the sealing bag with the storage box is vacuumized, and the vacuum degree reaches 10 -1 -10 3 Pa, or high-purity nitrogen, argon or helium is filled into the inner space of the sealed bag, the purity of the gas is higher than 99.99%, the air pressure reaches 1-1.3 atmospheres, and sealing is carried out, so that the electron multiplier packaging process is simple and convenient to operate, the sealing time is shortened, and the whole process only needs a few minutes.
Drawings
FIG. 1 is a schematic diagram of a memory device of an electron multiplier according to embodiment 1 of the present utility model;
FIG. 2 is a schematic view showing the structure of the polytetrafluoroethylene adsorbent cartridge of the present utility model at the bottom of the storage box;
FIG. 3 is a schematic view of the fixation structure of an electron multiplier and a polytetrafluoroethylene separator in the utility model;
FIG. 4 is a schematic diagram of the connection structure of the electron multiplier and the storage box in the present utility model;
FIG. 5 is a schematic view of a top cover and a fixing structure of a storage box according to the present utility model;
FIG. 6 is a schematic diagram showing a memory device of an electron multiplier according to embodiment 2 of the utility model
FIG. 7 is a graph showing the secondary electron emission coefficient of MgO thin film, which has just been prepared, of MgO thin film which has been left in the atmosphere for 7 days, and of MgO thin film which has been stored in a storage device in which a carbon dioxide adsorbent and a desiccant are separately placed for 7 days, as a function of the energy of incident electrons;
FIG. 8 is a graph showing the gain of an electron multiplier with operating voltage for 7 days in a storage device in which a carbon dioxide adsorbent and a desiccant are separately placed, and the electron multiplier is placed in an atmospheric environment for 7 days;
wherein 1 is a storage box, 2 is a top cover of the storage box, 3 is a polytetrafluoroethylene separator, 4-1 is a carbon dioxide adsorbent, 4-2 is a desiccant, 5 is a polytetrafluoroethylene adsorbent box, 6 is a sealing bag, 7 is a screw A for fixing an electron multiplier to the polytetrafluoroethylene separator, 8 is a screw B for connecting the polytetrafluoroethylene separator with the bottom of the storage box, 9 is a screw C for connecting the top cover of the storage box with the storage box, and 10 is a first cover plate; 11 is a screw D for connecting the top cover plate of the polytetrafluoroethylene adsorbent box with the polytetrafluoroethylene adsorbent box, 12 is a through hole on the surfaces of the polytetrafluoroethylene adsorbent box and the polytetrafluoroethylene desiccant box, the first electron multiplier 13 and the second electron multiplier 14, 15 are polytetrafluoroethylene desiccant boxes, 16 is a second cover plate, 17 is a screw E for connecting the top cover plate of the polytetrafluoroethylene desiccant box with the polytetrafluoroethylene desiccant box, and 18 is a screw F for connecting the polytetrafluoroethylene desiccant box with the polytetrafluoroethylene adsorbent box.
Detailed Description
The utility model is described in further detail below with reference to the attached drawing figures:
example 1
As shown in fig. 1 to 5, an electron multiplier storage device comprises a storage box 1, a storage box top cover 2, a polytetrafluoroethylene separator 3, a carbon dioxide adsorbent 4-1, a desiccant 4-2, a polytetrafluoroethylene adsorbent box 5 and a sealing bag 6; the carbon dioxide adsorbent 4-1 is mixed with the desiccant 4-2 and is positioned in the polytetrafluoroethylene adsorbent box 5; the polytetrafluoroethylene adsorbent box 5 is positioned at the bottom of the storage box 1; the polytetrafluoroethylene separator 3 for mounting the electron multiplier is arranged above the polytetrafluoroethylene adsorbent box 5, the storage box top cover 2 is mounted on the top of the storage box 1, and the sealing bag 6 is wrapped on the periphery of the storage box 1.
The surfaces of the stainless steel storage box 1 and the storage box top cover 2 are provided with a plurality of through holes, and the aperture of each through hole is 8mm; the surface of the polytetrafluoroethylene separator 3 is provided with a plurality of through holes, and the aperture of the through holes is 5mm; the polytetrafluoroethylene adsorbent box 5 is provided with a first openable cover plate 10, the surfaces of the first openable cover plate are provided with a plurality of through holes, the aperture of each through hole is 2mm, and the vacuum degree in the sealed bag reaches 10 -1 Pa. Such surface through-holesThe design is favorable for vacuumizing the inner space of the sealed bag, and can promote the carbon dioxide adsorbent 4-1 and the desiccant 4-2 to absorb water vapor and carbon dioxide.
In the polytetrafluoroethylene adsorbent box, the mass ratio of the carbon dioxide adsorbent 4-1 to the desiccant 4-2 is 1:4, and the carbon dioxide adsorbent and the desiccant are granular, and the grain size is about 5mm.
The desiccant 4-2 adopts allochroic silica gel to absorb water vapor in the storage device and prevent chemical reaction between the MgO film and the water vapor.
The carbon dioxide adsorbent 4-1 adopts calcium hydroxide to absorb carbon dioxide in the storage device and prevent the MgO film from chemically reacting with the carbon dioxide.
The first electron multiplier 13 is arranged on the polytetrafluoroethylene separator 3 through the A screw 7, the polytetrafluoroethylene separator 3 provided with the first electron multiplier 13 is fixed in the storage box 1 through the B screw 8, the polytetrafluoroethylene separator is pressed downwards through adjusting the B screw 8, the polytetrafluoroethylene adsorbent box is fixed at the bottom of the storage box, and shaking and collision of the first electron multiplier 13 and all parts inside the storage box in the process of storing and transporting the electron multiplier are prevented, so that damage to devices and parts is avoided.
Vacuumizing the inner space of the sealed bag 6 filled with the storage box 1 to 10 -1 Pa, sealing to form a clean storage environment in the inner space of the sealed bag, and protecting the MgO film from being polluted by substances such as water vapor, carbon dioxide and the like.
An electron multiplier storage method based on the storage device of embodiment 1, comprising the steps of:
step 1, taking out a polytetrafluoroethylene adsorbent box 5 from the bottom of a stainless steel storage box 1, opening a cover plate 10 at the top of the polytetrafluoroethylene adsorbent box, mixing a carbon dioxide adsorbent 4-1 with a drying agent 4-2, placing the mixture in the polytetrafluoroethylene adsorbent box 5, fixing a first cover plate 10 at the top of the polytetrafluoroethylene adsorbent box by using a screw D11, and placing the polytetrafluoroethylene adsorbent box 5 with the carbon dioxide adsorbent 4-1 and the drying agent 4-2 at the bottom of the storage box 1;
step 2, mounting the first electron multiplier 13 on the polytetrafluoroethylene separator 3, fixing the polytetrafluoroethylene separator 3 with a screw A7, placing the polytetrafluoroethylene separator 3 with the first electron multiplier 13 mounted above the polytetrafluoroethylene adsorbent box 5, fixing the polytetrafluoroethylene separator 3 in the storage box 1 with a screw B8, extruding the polytetrafluoroethylene separator 3 downwards through the adjusting screw B8, and fixing the polytetrafluoroethylene adsorbent box 5 at the bottom of the storage box 1;
step 3, covering a top cover 2 of the stainless steel storage box, and fixing by using a screw C9;
step 4, placing the storage box in the sealing bag, and vacuumizing the inner space of the sealing bag 6 filled with the storage box to a vacuum degree of 10 -1 Pa, and sealing to finish the sealing of the electron multiplier.
Example 2
As shown in fig. 6, an electron multiplier storage device is composed of an ABS plastic storage box 1, an ABS plastic storage box top cover 2, a polytetrafluoroethylene separator 3, a carbon dioxide adsorbent 4-1 with strong carbon dioxide adsorption capacity, a desiccant 4-2 with strong water absorption capacity, a polytetrafluoroethylene adsorbent box 5, a polytetrafluoroethylene desiccant box 15 and a sealing bag 6; the desiccant 4-2 is positioned in the polytetrafluoroethylene desiccant box 15 at the central position of the polytetrafluoroethylene adsorbent box 5, and the carbon dioxide adsorbent 4-1 is positioned around the polytetrafluoroethylene desiccant box 15 in the polytetrafluoroethylene adsorbent box 5; the polytetrafluoroethylene adsorbent box 5 is positioned at the bottom of the storage box 1; a polytetrafluoroethylene separator 3 to which the first electron multiplier 13 and the second electron multiplier 14 are mounted is located above the polytetrafluoroethylene adsorbent cartridge.
The surfaces of the ABS plastic storage box 1 and the storage box top cover 2 are provided with a plurality of through holes, and the aperture of each through hole is 6mm; the surface of the polytetrafluoroethylene separator 3 is provided with a plurality of through holes, and the aperture of each through hole is 4mm; the top of the polytetrafluoroethylene adsorbent box 5 and the polytetrafluoroethylene desiccant box 15 are respectively provided with a first cover plate 10 and a second cover plate 16 which can be opened, and a plurality of through holes are respectively arranged on the surfaces of the polytetrafluoroethylene adsorbent box 5 and the polytetrafluoroethylene desiccant box 15 and the first cover plate 10 and the second cover plate 16 thereof, and the aperture of the through holes is 1.5mm.
The mass ratio of the carbon dioxide adsorbent 4-1 to the desiccant 4-2 in the polytetrafluoroethylene adsorbent box is 1:2, and the carbon dioxide adsorbent and the desiccant are granular, and the grain diameter is about 3mm. The carbon dioxide adsorbent 4-1 and the drying agent 4-2 are separately placed, the drying agent 4-2 is positioned in the polytetrafluoroethylene drying agent box 15 at the central position of the polytetrafluoroethylene adsorbent box 5, and the carbon dioxide adsorbent 4-1 is positioned around the polytetrafluoroethylene drying agent box 15 in the polytetrafluoroethylene adsorbent box 5. The carbon dioxide adsorbent at the outside can adsorb a small amount of water vapor, the existence of water molecules can further improve the carbon dioxide adsorption capacity of the carbon dioxide adsorbent, and the water vapor in the storage device can be efficiently adsorbed by utilizing the drier with higher mass proportion in the drier box at the central position of the adsorbent box, so that the performance reduction of the electron multiplier caused by the reaction of carbon dioxide, water and MgO film can be better inhibited.
The desiccant adopts soda lime to absorb water vapor in the storage device and prevent chemical reaction between the MgO film and the water vapor.
The carbon dioxide adsorbent adopts zeolite molecular sieve to absorb carbon dioxide in the storage device and prevent chemical reaction between MgO film and carbon dioxide.
The first electron multiplier 13 and the second electron multiplier 14 are mounted on the polytetrafluoroethylene separator 3 by screws A7, the polytetrafluoroethylene separator 3 with the electron multiplier is fixed in the storage box 1 by screws B8, the polytetrafluoroethylene separator is pressed downwards by adjusting screws B8, and the polytetrafluoroethylene adsorbent box is fixed at the bottom of the storage box.
The inner space of the sealed bag 6 provided with the storage box 1 is filled with high-purity nitrogen, the purity of the gas is 99.999%, the air pressure reaches 1.1 atmosphere, and the sealing is carried out, so that the inner space of the sealed bag forms a clean storage environment, and the MgO film is protected from being polluted by substances such as water vapor, carbon dioxide and the like.
An electron multiplier storage method based on the storage device of embodiment 2, comprising the steps of:
step 1, taking out the polytetrafluoroethylene adsorbent box 5 from the bottom of the ABS plastic storage box 1, taking out the polytetrafluoroethylene desiccant box 15 again, opening the polytetrafluoroethylene adsorbent box and the first cover plate 10 and the second cover plate 16 at the top of the polytetrafluoroethylene desiccant box, putting the desiccant 4-2 into the polytetrafluoroethylene desiccant box 15, fixing the second cover plate 16 at the top of the polytetrafluoroethylene desiccant box by using a screw E17, placing the second cover plate 16 in the central position of the polytetrafluoroethylene adsorbent box 5, fixing the polytetrafluoroethylene desiccant box 15 in the center of the polytetrafluoroethylene adsorbent box 5 by using a screw F18, and filling the periphery of the polytetrafluoroethylene desiccant box 15 with the carbon dioxide adsorbent 4-1 and filling the polytetrafluoroethylene adsorbent box 5; fixing a first cover plate 10 at the top of the polytetrafluoroethylene adsorbent box by using a screw D11, and placing the polytetrafluoroethylene adsorbent box 5 with the carbon dioxide adsorbent 4-1 and the drying agent 4-2 at the bottom of the storage box 1;
step 2, mounting a first electron multiplier 13 and a second electron multiplier 14 on the polytetrafluoroethylene separator 3, fixing the polytetrafluoroethylene separator 3 with a screw A7, placing the polytetrafluoroethylene separator 3 with the first electron multiplier 13 and the second electron multiplier 14 mounted above the polytetrafluoroethylene adsorbent box 5, fixing the polytetrafluoroethylene separator 3 in the storage box 1 with a screw B8, extruding the polytetrafluoroethylene separator 3 downwards through an adjusting screw B8, and fixing the polytetrafluoroethylene adsorbent box 5 at the bottom of the storage box 1;
step 3, covering the top cover 2 of the ABS plastic storage box, and fixing by using a screw C9;
and 4, placing the storage box in a sealing bag, filling high-purity nitrogen into the inner space of the sealing bag 6 filled with the storage box, wherein the gas purity is 99.999%, the gas pressure reaches 1.1 atmosphere, and sealing to finish the sealing of the electron multiplier.
Referring to fig. 7, the secondary electron emission coefficient of the MgO film immediately after the preparation, the MgO film after the preparation was left in the atmosphere for 7 days, and the MgO film after the preparation was stored in a storage device in which a carbon dioxide adsorbent and a desiccant were separately placed for 7 days. As can be seen from fig. 5, after storage for 7 days, the secondary electron emission coefficient of the MgO film stored in the storage device in which the carbon dioxide adsorbent and the drying agent were separately placed was significantly reduced in magnitude compared to the MgO film placed in the atmospheric environment.
Referring to fig. 8, the gain of the electron multiplier immediately after the completion of the production, the electron multiplier placed in the atmosphere for 7 days, and the electron multiplier stored in a storage device in which a carbon dioxide adsorbent and a desiccant are placed separately, respectively, are plotted against the energy of the incident electrons. As can be seen from fig. 6, after 7 days of storage, the gain of the electron multiplier stored in the storage device in which the carbon dioxide adsorbent was placed separately from the desiccant was reduced by a significantly lower extent than the electron multiplier placed in the atmospheric environment.
Although the above detailed description describes the present utility model in detail, it is not intended to limit the present utility model. The electron multiplier storage device and the storage method are not limited to the scheme, and the utility model belongs to the protection scope of the utility model as long as the method of combining a drying agent, a carbon dioxide adsorbent and vacuum or high-purity inert gas filling for protection storage is adopted according to the basic conception of the utility model so as to achieve the purpose of inhibiting pollution of air to an MgO film and the reduction of secondary electron emission coefficient of the MgO film and the degradation of the performance of the electron multiplier caused by the pollution of the MgO film.
Claims (7)
1. An electron multiplier storage device, characterized by: the device comprises a storage box (1), a storage box top cover (2), a polytetrafluoroethylene separator (3), a carbon dioxide adsorbent (4-1), a desiccant (4-2), a polytetrafluoroethylene adsorbent box (5) and a sealing bag (6); the polytetrafluoroethylene adsorbent box (5) is positioned at the bottom of the storage box (1); a polytetrafluoroethylene separator (3) for installing an electron multiplier is arranged above a polytetrafluoroethylene adsorbent box (5), a storage box top cover (2) is arranged at the top of a storage box (1), and a sealing bag (6) is wrapped on the periphery of the storage box (1).
2. An electron multiplier storage device, characterized by: the device comprises a storage box (1), a storage box top cover (2), a polytetrafluoroethylene separator (3), a carbon dioxide adsorbent (4-1), a desiccant (4-2), a polytetrafluoroethylene adsorbent box (5), a polytetrafluoroethylene desiccant box (15) and a sealing bag (6); the drier (4-2) is positioned in a polytetrafluoroethylene drier box (15), the polytetrafluoroethylene drier box (15) is positioned at the central position of the polytetrafluoroethylene adsorbent box (5), and the carbon dioxide adsorbent (4-1) is positioned around the polytetrafluoroethylene drier box (15); the polytetrafluoroethylene adsorbent box (5) is positioned at the bottom of the storage box (1); a polytetrafluoroethylene separator (3) for installing an electron multiplier is arranged above a polytetrafluoroethylene adsorbent box (5), a storage box top cover (2) is arranged at the top of a storage box (1), and a sealing bag (6) is wrapped on the periphery of the storage box (1).
3. An electron multiplier storage device according to claim 1 or 2, characterized in that the storage case (1) and the top cover (2) of the storage case are made of stainless steel, ABS plastic or polytetrafluoroethylene material; the surfaces of the storage box (1) and the storage box top cover (2) are provided with a plurality of through holes, and the aperture of the through holes is 4-8mm.
4. An electron multiplier storage device according to claim 1 or 2, wherein the polytetrafluoroethylene separator (3) has a plurality of through holes on its surface, the through holes having a pore diameter of 3-6mm.
5. An electron multiplier storage device according to claim 1 or 2, characterized in that the top of the polytetrafluoroethylene adsorbent cartridge (5) is provided with an openable first cover plate (10), and the top of the polytetrafluoroethylene desiccant cartridge (15) is provided with an openable second cover plate (16); the surfaces of the polytetrafluoroethylene adsorbent box (5) and the polytetrafluoroethylene desiccant box (15) and the first cover plate (10) and the second cover plate (16) are respectively provided with a plurality of through holes, and the aperture of each through hole is 1-2mm.
6. An electron multiplier storage device according to claim 1 or 2, wherein the carbon dioxide adsorbent (4-1) and the desiccant (4-2) are both in the form of particles having a particle size of 3-6mm.
7. An electron multiplier storage device according to claim 1 or 2, wherein the inside of the sealed bag (6) containing the storage case (1) is in a vacuum state, the vacuum degreeIs 10 -1 -10 3 Pa, or high purity nitrogen, argon or helium is filled in the sealed bag (6), the purity is higher than 99.99%, and the air pressure reaches 1-1.3 atmospheres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223101699.XU CN219383527U (en) | 2022-11-22 | 2022-11-22 | Electron multiplier storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223101699.XU CN219383527U (en) | 2022-11-22 | 2022-11-22 | Electron multiplier storage device |
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| Publication Number | Publication Date |
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| CN219383527U true CN219383527U (en) | 2023-07-21 |
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| CN202223101699.XU Active CN219383527U (en) | 2022-11-22 | 2022-11-22 | Electron multiplier storage device |
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| CN (1) | CN219383527U (en) |
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