A multi-cell alkali metal cell chemical method six-side bonding device

Abstract

The application discloses a multi-slot alkali metal cell chemical six-side bonding device, which is characterized in that: firstly, the device is applied to a glass bonding link after chemical soaking; secondly, six-side bonding is realized according to the structure design of the alkali metal cell; finally, three slots are designed to bear force uniformly and simultaneously bond, so that the production efficiency is improved by three times. The application considers heating expansion, designs a right-angle drainage groove, discharges the volatilized solution, and facilitates the placement and clamping of the glass sheet. The application designs a cover plate to uniformly apply bonding external force to the three cells simultaneously, and ensures the consistency of the cells. In addition to the vertical direction, the cover plate can be freely combined in the horizontal direction. A through hole is designed on the rear wall to discharge steam. In the selection of device materials, polyether ether ketone (PEEK) is used to prevent chemical reagent corrosion, and the material hardness is ensured to resist high annealing temperature. The application provides practical and effective guidance for the preparation of an alkali metal cell required by a magnetic measurement device based on the SERF effect.

Description

Technical Field

[0001] This invention belongs to the field of alkali metal gas chamber technology, specifically relating to a multi-slot alkali metal gas chamber chemical six-sided bonding device. Background Technology

[0002] With the rise of quantum precision measurement instruments such as nuclear magnetic resonance gyroscopes, SERF gyroscopes, magnetometers, and radio frequency magnetometers, a series of different types of core sensing elements—alkali metal gas cells—have been developed to meet the different requirements of different application backgrounds. With the miniaturization requirements of quantum instruments, how to produce reliable and highly consistent miniaturized alkali metal gas cells has become a major demand.

[0003] The main challenges in producing alkali metal cells lie in the following aspects: high reliability requirements, as the lifespan of the alkali metal cell essentially determines the lifespan of the corresponding quantum precision measurement device; the production of alkali metal cells typically involves complex processes and conditions, with the methods and equipment often requiring stringent application environments; the chemical reagents used for bonding the glass materials in the production of alkali metal cells can introduce corrosion into the device, and the annealing process also increases the temperature resistance requirements of the materials; simultaneously, alkali metal cells are often composed of multi-faceted glass, and how to simultaneously achieve effective bonding of multiple glass surfaces while ensuring uniform application of external force is a key challenge; the production of a single glass cell is often complex and inefficient, and how to effectively improve production efficiency is also a major problem faced in existing research. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a multi-slot alkali metal chamber chemical bonding apparatus for six-sided bonding, which meets the experimental requirements of the alkali metal chamber chemical bonding process. First, the apparatus is applied to the glass bonding stage after chemical immersion, and consists of apparatus assembly, filling, and annealing processes. Second, the structure is designed according to the alkali metal chamber structure required by the SERF magnetometer, achieving six-sided bonding. Finally, based on achieving six-sided bonding of individual chambers, three slots within the individual apparatus are designed for uniform stress and simultaneous bonding, tripling the production efficiency.

[0005] The device of this invention considers thermal expansion and features a drainage channel at a right angle, which not only drains volatile solutions but also facilitates the placement and handling of glass slides. The cover plate designed in this invention can simultaneously and uniformly apply bonding force to three gas chambers to be bonded, improving production efficiency while greatly ensuring the consistency of gas chambers within the same batch. In addition to the vertical cover plate, a freely combinable cover plate is designed in the horizontal direction. The cover plate can use a flat cover plate required for six-sided bonding or a cover plate with a gas handle for integral gas chamber molding, providing space for continuous iteration of the device. Through holes are designed on the rear wall of the device's slots to expel steam and ensure overall experimental safety. Regarding the selection of materials, devices made of graphite, polyetheretherketone (PEEK), and polyphenylene sulfide (PPS) were designed. Compared with traditional alloy materials, these three materials can prevent corrosion from chemical reagents, while ensuring material hardness and withstanding the high temperatures during annealing. This invention provides practical and effective guidance for the preparation of alkali metal gas chambers required for magnetic measurement devices based on the SERF effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-slot alkali metal gas chamber chemical bonding apparatus includes a main body, gas chamber glass plates, a vertical cover plate, a horizontally arranged freely combinable cover plate, a rear wall through hole, and a right-angle drainage groove. The main body has three slots for fixing the gas chamber glass plates to be bonded. The 18 gas chamber glass plates to be bonded, which are soaked in a chemical solution and then dried with nitrogen, are placed in groups of six into the three slots of the main body. A right-angle drainage groove is set at the right angle of each slot, and a rear wall through hole is set in the rear wall of the slot for venting steam. Each slot independently forms a 4*4*4mm alkali metal glass gas chamber. The vertical cover plate is set above the glass gas chamber, and a metal clamp is used to apply vertical external force and fix the vertical positioning of the glass gas chamber. A horizontally arranged freely combinable cover plate covers the glass gas chamber, and a metal clamp is used to apply horizontal external force.

[0008] Furthermore, the three glass chambers are bonded together under uniform force.

[0009] Furthermore, the right-angle drainage channel has a circular groove for draining the volatile solution and facilitates the placement and clamping of the glass plate 2.

[0010] Furthermore, the freely combinable cover plate includes a flat cover plate required for six-sided bonding or a handle-bonded cover plate for integral molding of the glass air chamber.

[0011] Compared with the prior art, the advantages of this invention are as follows:

[0012] (1) Based on the six-sided bonding of the single gas chamber, three slots were designed in the single device to be bonded at the same time under uniform force, which increased the production efficiency by three times.

[0013] (2) The device of this invention takes into account thermal expansion and is designed with a right-angle drain trough at a right angle position, which can not only drain the volatile solution, but also facilitate the placement and clamping of the glass plate.

[0014] (3) The cover plate designed in this invention can simultaneously apply bonding force evenly to three gas chambers to be bonded, which greatly improves production efficiency and ensures the consistency of gas chambers in the same batch.

[0015] (4) In addition to the vertical cover plate, a freely combinable cover plate is designed in the horizontal direction. The cover plate can be either a flat cover plate required by six-sided bonding or a cover plate with a gas handle bonded to the overall molding of the gas chamber, which provides space for the continuous iteration of subsequent devices.

[0016] (5) A through hole was designed on the rear wall of the device slot to allow steam to escape, ensuring the overall safety of the experiment.

[0017] (6) In terms of material selection, three materials were designed: graphite, polyether ether ketone (PEEK), and polyphenylene sulfide (PPS). Compared with traditional alloy materials, these three materials can prevent corrosion by chemical reagents, ensure material hardness, and withstand high temperatures during annealing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main device in this invention;

[0019] Figure 2 This is a schematic diagram of the main body of the device after removing all the cover plates and glass sheets in this invention;

[0020] Figure 3 This is a schematic diagram of a horizontal cover plate.

[0021] The reference numerals in the attached drawings are listed below: 1-Main body of the device; 2-Glass plate of the air chamber; 3-Vertical cover plate; 4-Horizontal cover plate; 5-Through hole in the rear wall; 6-Right-angle drainage groove. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "comprising," "including," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0024] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to facilitate intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationships in the actual product. Changes in these relative positional relationships, without departing from the technical concept disclosed in this application, should also be considered within the scope of this application.

[0025] like Figure 1 , Figure 2 As shown, the multi-slot alkali metal gas chamber chemical six-sided bonding device of the present invention includes a device body 1, gas chamber glass plates 2, a vertical cover plate 3, a horizontal cover plate 4, a rear wall through hole 5, and a right-angle drainage groove 6. The device body 1 has three slots for fixing the gas chamber glass plates 2 to be bonded. Its internal dimensions are just right to accommodate a 4×4×4mm glass gas chamber. First, the 18 gas chamber glass plates 2 to be bonded, which have been soaked in a chemical solution and then dried with nitrogen, are placed in groups of 6 into the three slots of the device body 1. The right-angle drainage groove 6 designed at the right angle can achieve positioning and facilitate clamping and placement. Then, the vertical cover plate 3 is closed, and a metal clamp is used to apply vertical external force, while fixing the vertical positioning of the glass gas chamber. In the horizontal direction, it is used... Figure 3 The horizontal cover plate 4 shown is placed on top, and a horizontal external force is applied using metal clamps. Right-angle drain grooves 6 are provided at the right-angle positions of each slot, and rear wall through holes 5 are provided on the rear wall of the slot for steam discharge. The horizontal cover plate 4 is detachable, and different types of horizontal cover plates 4 can be applied for different bonding requirements.

[0026] like Figure 3 As shown, the horizontal cover plate 4 has protruding supports for applying external force to the three slots.

[0027] This invention, based on achieving six-sided bonding of individual gas chambers, incorporates three slots within the single-chamber device for simultaneous bonding under uniform force, tripling production efficiency. The device design considers thermal expansion, featuring a right-angled drainage channel 6 at a right-angle position, which not only drains volatile solutions but also facilitates the placement and handling of the gas chamber glass plates 2. The cover plate designed in this invention can simultaneously and uniformly apply bonding force to the three gas chambers to be bonded, significantly improving production efficiency while greatly ensuring the consistency of gas chambers within the same batch. In addition to the vertical cover plate 3, a freely combinable cover is designed in the horizontal direction. The cover plate can be either a flat cover plate 4 required for six-sided bonding, or a cover plate with a gas handle bonded to the gas chamber integrally formed, providing space for continuous iteration of the device; a rear wall through hole 5 is designed on the rear wall of the device slot to exhaust steam and ensure the overall safety of the experiment; in terms of the selection of device materials, three materials were designed successively: graphite, polyetheretherketone (PEEK), and polyphenylene sulfide (PPS). Compared with traditional alloy materials, these three materials can prevent corrosion by chemical reagents, while ensuring material hardness and withstanding the high temperature during annealing.

[0028] This invention does not use the alloy materials used in traditional glass bonding devices, thus avoiding the corrosion of alloy materials by residual chemical reagents; it also does not use commonly used engineering plastics, because conventional engineering plastic materials cannot withstand the high temperatures during annealing; graphite materials, which are commonly used in bonding devices, are prone to flaking during operation, which can cause great pollution to the bonding surface and the glass surface.

[0029] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

[0030] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] It is hereby indicated that the above description is intended to help those skilled in the art to understand the present invention, but is not intended to limit the scope of protection of the present invention. Any equivalent substitutions, modifications, improvements, and / or simplifications of the above description that do not depart from the essence of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A multi-slot alkali metal gas chamber chemical six-sided bonding device, characterized in that: The device includes a main body, glass chambers, a vertical cover plate, a horizontally combinable cover plate, a rear wall through hole, and a right-angle drainage groove. The main body has three slots for fixing the glass chambers to be bonded. The 18 glass chambers to be bonded, which have been soaked in a chemical solution and dried with nitrogen, are placed in groups of six into the three slots of the main body. A right-angle drainage groove is set at the right angle of each slot, and a rear wall through hole is set on the rear wall of the slot for venting steam. Each slot independently forms a 4*4*4mm alkali metal glass chamber. The vertical cover plate is set above the glass chamber, and a metal clamp is used to apply vertical external force and fix the vertical positioning of the glass chamber. A horizontally combinable cover plate covers the glass chamber, and a metal clamp is used to apply horizontal external force.

2. The multi-slot alkali metal gas chamber chemical six-sided bonding device according to claim 1, characterized in that: The three glass chambers are bonded together under uniform force.

3. The multi-slot alkali metal gas chamber chemical six-sided bonding device according to claim 1, characterized in that: The right-angle drainage channel has a circular groove for draining volatile solutions and facilitates the placement and handling of glass slides.

4. The multi-slot alkali metal gas chamber chemical six-sided bonding device according to claim 1, characterized in that: The freely combinable cover plate includes a flat cover plate required for six-sided bonding or a handle-bonded cover plate for integral molding of the glass air chamber.

5. The multi-slot alkali metal gas chamber chemical six-sided bonding device according to claim 1, characterized in that: The device is made of graphite, polyetheretherketone, or polyphenylene sulfide.

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