Inflation device of glass tube alkali metal air chamber

Abstract

The utility model discloses an inflating device of a glass tube alkali metal gas chamber, which comprises a vacuum pump, an alkali metal container, an alkali metal heater, a first gas cylinder and a connecting pipeline, the vacuum pump is communicated with the connecting pipeline through an exhaust pipeline, and the alkali metal container is communicated with the connecting pipeline through an alkali metal pipeline. The first gas cylinder is communicated with the connecting pipeline through a first gas outlet pipeline, and the connecting pipeline is communicated with the glass tube alkali metal gas chamber; the first gas cylinder is filled with the inert gas, an alkali metal releasing agent is contained in the alkali metal container, and the alkali metal heater is used for heating the alkali metal releasing agent in the alkali metal container. And the inflating device is used for inflating the glass tube alkali metal air chamber.

Description

Technical Field

[0001] The utility model relates to an angular rate sensing technology, in particular to an inflation device for an alkali metal gas chamber of a glass tube. Background Art

[0002] The atomic spin gyroscope is a type of gyroscope based on the atomic spin polarization effect. Compared with traditional relay gyroscopes, laser gyroscopes, optical gyroscopes, etc., it can achieve high-precision detection and has shown great development potential and application value in military and civilian fields such as inertial navigation, attitude control, and scientific research.

[0003] The alkali metal gas chamber is a sensitive element that carries the atomic spin in the atomic spin gyroscope and is the core component of the atomic spin gyroscope. Currently, the alkali metal gas chambers commonly used in the market are mostly closed transparent glass chambers manufactured by glass precision welding technology and chip-level gas chambers with glass-silicon-glass three-layer bonding. However, this type of gas chamber has many problems, such as the difficulty of coating the inner wall film layer, the alkali metal gas chamber is prone to discoloration due to the intensified reaction between the alkali metal atoms and the inner wall of the glass, and the integrated heating coil causes an increase in the magnetic field gradient. Utility Model Content

[0004] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides an inflation device for inflating an alkali metal gas chamber of a glass tube.

[0005] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0006] A gas filling device for a glass tube alkali metal gas chamber comprises a vacuum pump, an alkali metal container, an alkali metal heater, a first gas cylinder and a connecting pipeline, wherein the vacuum pump is connected to the connecting pipeline via an exhaust pipeline, the alkali metal container is connected to the connecting pipeline via an alkali metal pipeline, and the first gas cylinder is connected to the connecting pipeline via a first gas outlet pipeline; the first gas cylinder is filled with the inert gas, the alkali metal container contains an alkali metal releaser, the alkali metal heater is used for heating the alkali metal releaser in the alkali metal container; and the connecting pipeline is used for being connected to the glass tube alkali metal gas chamber.

[0007] Furthermore, a first gas outlet valve and a first gas flow meter are provided in the first gas outlet pipeline.

[0008] Furthermore, the inflation device also includes a second gas cylinder, which is connected to the connecting pipeline through a second gas outlet pipeline; the second gas cylinder is filled with buffer gas.

[0009] Furthermore, a second gas outlet valve and a second gas flow meter are provided in the second gas outlet pipeline.

[0010] Furthermore, the inflation device also includes a third gas cylinder, which is connected to the connecting pipeline through a third gas outlet pipeline; the third gas cylinder is filled with quenching gas.

[0011] Furthermore, a third gas outlet valve and a third gas flow meter are provided in the third gas outlet pipeline.

[0012] Furthermore, an alkali metal valve is provided in the alkali metal pipeline.

[0013] Furthermore, a vacuum gauge and a stop valve are provided in the air extraction pipeline.

[0014] Furthermore, the connecting pipeline is bonded and fixed in the alkali metal gas chamber of the glass tube by vacuum sealant.

[0015] Furthermore, the alkali metal heater is an alcohol lamp.

[0016] The utility model has the following beneficial effects: the inflation device of the utility model is used to inflate the glass tube alkali metal gas chamber. Compared with the traditional alkali metal gas chamber, the glass tube alkali metal gas chamber formed by inflation has high air tightness, high surface accuracy and good gas chamber inner wall state. At the same time, it is easier to realize the release and filling of alkali metal atoms and inert gas in the pipeline system, and can solve the problems of quantitative filling of high-purity alkali metal atoms and precise control of the inert gas, structural air tightness, etc., which can further improve the performance of the gas chamber, and then promote the angular rate sensor to develop in the direction of small size, long life, high performance, miniaturization and integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural principle diagram of the inflation device of the glass tube alkali metal gas chamber provided by the utility model.

[0018] Figure 2 This is a schematic structural diagram of the glass tube alkali metal gas chamber provided by the utility model. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 therefore cannot be understood as a limitation on the present invention.

[0021] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Embodiment 1

[0024] A gas filling device for a glass tube alkali metal gas chamber is used for filling the glass tube alkali metal gas chamber.

[0025] like Figure 2As shown, the glass tube alkali metal gas chamber 100 includes a three-way glass tube 110, a first optical fiber collimator 120 and a second optical fiber collimator 130. The three-way glass tube 110 has a first channel 111, a second channel 112 and a third channel 113 that are connected to each other. The first channel 111 and the second channel 112 are in a straight-through structure, and the third channel 113 and the first channel 111 and the second channel 112 are in a non-straight-through structure; the first optical fiber collimator 120 and the second optical fiber collimator 130 are respectively sealed and arranged in the first channel 111 and the second channel 112 of the three-way glass tube 110, and the first optical fiber collimator 120 and the second optical fiber collimator 130 are aligned with each other; wherein the third channel 113 of the three-way glass tube 110 is used to communicate with the inflation device so that the inflation device can inflate the three-way glass tube 110 through the third channel 113.

[0026] like Figure 1 As shown, the inflation device includes a vacuum pump 1, an alkali metal container 2, an alkali metal heater 3, a first gas cylinder 4 and a connecting pipeline 7. The vacuum pump 1 is connected to the connecting pipeline 7 through an exhaust pipeline 8, the alkali metal container 2 is connected to the connecting pipeline 7 through an alkali metal pipeline 9, and the first gas cylinder 4 is connected to the connecting pipeline 7 through a first gas outlet pipeline 10; the first gas cylinder 4 is filled with the inert gas, the alkali metal container 2 contains an alkali metal releaser, and the alkali metal heater 3 is used to heat the alkali metal releaser in the alkali metal container 2; the connecting pipeline 7 is used to be connected to the glass tube alkali metal gas chamber 100 (the third channel 113 of the three-way glass tube 110).

[0027] The inflation device of the utility model is used to inflate the glass tube alkali metal gas chamber 100. Compared with the traditional alkali metal gas chamber 100, the glass tube alkali metal gas chamber 100 formed by inflation has high air tightness, high surface accuracy and good inner wall state of the gas chamber 100. At the same time, it is easier to achieve the release and filling of alkali metal atoms and inert gas in the pipeline system, which can solve the problems of quantitative filling of high-purity alkali metal atoms and precise control of the inert gas, structural air tightness, etc., and can further improve the performance of the gas chamber 100, thereby promoting the development of angular rate sensors towards small size, long life, high performance, miniaturization and integration.

[0028] When the glass tube alkali metal gas chamber 100 is inflated, the following steps are included:

[0029] Step 1: Use the vacuum pump 1 to evacuate the three-way glass tube 110 through the exhaust pipeline 8 and the connecting pipeline 7, so that the vacuum degree of the three-way glass tube 110 reaches a preset value.

[0030] Step 2: Use the first gas cylinder 4 to fill the three-way glass tube 110 with the inert gas through the first gas outlet pipeline 10 and the connecting pipeline 7 .

[0031] Step 3: The alkali metal heater 3 is used to heat the alkali metal releaser in the alkali metal container 2 to release alkali metal atoms from the alkali metal releaser, and the alkali metal atoms are filled into the three-way glass tube 110 through the alkali metal pipeline 9 and the connecting pipeline 7 .

[0032] Step 4: The third channel 113 of the three-way glass tube 110 is sealed to finally form the glass tube alkali metal gas chamber 100 .

[0033] Preferably, a vacuum gauge 14 and a stop valve 13 are provided in the exhaust pipeline 8. In the above step 1, the stop valve 13 is first closed to disconnect the exhaust pipeline 8 from the inside of the connecting pipeline 7, and then the vacuum pump 1 is started to start vacuuming. Then, the stop valve 13 is opened to connect the exhaust pipeline 8 with the inside of the connecting pipeline 7. The vacuum pump 1 vacuumizes the three-way glass tube 110 through the exhaust pipeline 8 and the connecting pipeline 7. During vacuuming, the vacuum degree in the exhaust pipeline 8 is monitored by the vacuum gauge 14. When the vacuum degree reaches a preset value, the stop valve 13 is first closed to disconnect the exhaust pipeline 8 from the inside of the connecting pipeline 7, and then the vacuum pump 1 is shut down to stop vacuuming.

[0034] Preferably, the first gas outlet pipeline 10 is provided with a first gas outlet valve 16 and a first gas flow meter 19. In the above step 2, the first gas outlet valve 16 is first closed to disconnect the first gas outlet pipeline 10 from the inside of the connecting pipeline 7, and then the first gas cylinder 4 is opened for inflation, and then the first gas outlet valve 16 is opened to connect the first gas outlet pipeline 10 with the inside of the connecting pipeline 7, so that the inert gas naturally diffuses into the three-way glass tube 110 along the first gas outlet pipeline 10 and the connecting pipeline 7. When the three-way glass tube 110 is filled with the inert gas, the first gas outlet valve 16 is first closed to disconnect the first gas outlet pipeline 10 from the inside of the connecting pipeline 7, and then the first gas cylinder 4 is shut down to stop inflation.

[0035] Preferably, an alkali metal valve 15 is provided in the alkali metal pipeline 9. In the above step 3, the alkali metal valve 15 is first closed to disconnect the alkali metal pipeline 9 from the inside of the connecting pipeline 7, and then the alkali metal heater 3 is used to heat the alkali metal releaser in the alkali metal container 2 to make the temperature of the alkali metal releaser reach its vaporization temperature, so that the alkali metal releaser is vaporized to release the alkali metal atoms, and then the alkali metal valve 15 is opened to connect the alkali metal pipeline 9 with the inside of the connecting pipeline 7, so that the alkali metal atoms naturally diffuse into the three-way glass tube 110 along the alkali metal pipeline 9 and the connecting pipeline 7. When the three-way glass tube 110 is full of alkali metal atoms, the alkali metal valve 15 is first closed to disconnect the alkali metal pipeline 9 from the inside of the connecting pipeline 7, and then the alkali metal heater 3 is turned off or removed to stop heating the alkali metal releaser in the alkali metal container 2.

[0036] In this embodiment, the alkali metal heater 3 is an alcohol lamp.

[0037] In the above step 4, a hydrogen-oxygen flame spray gun 22 is used to heat the third channel 113 of the three-way glass tube 110 below the position connected to the connecting pipe 7 of the inflation device, or to heat the connecting pipe 7 above the position connected to the third channel 113 of the three-way glass tube 110, so that the third channel 113 or the connecting pipe 7 is melted at the heated position, and then slowly stretched or rotated, and the diameter of the third channel 113 or the connecting pipe 7 at the melting position is gradually reduced by the slow stretching or rotating process, so that the third channel 113 or the connecting pipe 7 is disconnected at the melting position and formed to be sealed to achieve a sealing setting, or the third channel 113 or the connecting pipe 7 is clamped and closed at the melting position by clamps and then disconnected.

[0038] Preferably, the connecting pipeline 7 is bonded and fixed in the third channel 113 of the three-way glass tube 110 of the glass tube alkali metal gas chamber 100 by vacuum sealant to increase the air tightness of the connection.

[0039] Embodiment 2

[0040] As an optimization solution of the first embodiment, in this embodiment, if Figure 1 As shown, the inflation device further includes a second gas cylinder 5, which is connected to the connecting pipeline 7 via a second gas outlet pipeline 11; the second gas cylinder 5 is filled with buffer gas.

[0041] In the above step 2, the inflation device further uses the second gas cylinder 5 to fill the buffer gas into the three-way glass tube 110 through the second gas outlet pipeline 11 and the connecting pipeline 7.

[0042] Preferably, the second gas outlet pipeline 11 is provided with a second gas outlet valve 17 and a second gas flow meter 20. In the above step 2, the second gas outlet valve 17 is first closed to disconnect the second gas outlet pipeline 11 from the inside of the connecting pipeline 7, and then the second gas cylinder 5 is opened for inflation, and then the second gas outlet valve 17 is opened to connect the second gas outlet pipeline 11 with the inside of the connecting pipeline 7, so that the buffer gas naturally diffuses into the three-way glass tube 110 along the second gas outlet pipeline 11 and the connecting pipeline 7. When the three-way glass tube 110 is filled with the buffer gas, the second gas outlet valve 17 is first closed to disconnect the second gas outlet pipeline 11 from the inside of the connecting pipeline 7, and then the second gas cylinder 5 is shut down to stop inflation.

[0043] Embodiment 3

[0044] As an optimization solution of Embodiment 1 or Embodiment 2, in this embodiment, if Figure 1 As shown, the inflation device further includes a third gas cylinder 6, and the third gas cylinder 6 is connected to the connecting pipeline 7 through a third gas outlet pipeline 12; the third gas cylinder 6 is filled with quenching gas.

[0045] In the above step 2, the gas charging device further uses the third gas cylinder 6 to fill the quenching gas into the three-way glass tube 110 through the third gas outlet pipeline 12 and the connecting pipeline 7.

[0046] Preferably, a third gas outlet valve 18 and a third gas flow meter 21 are provided in the third gas outlet pipeline 12. In the above step 2, the third gas outlet valve 18 is first closed to disconnect the third gas outlet pipeline 12 from the inside of the connecting pipeline 7, and then the third gas cylinder 6 is opened for inflation, and then the third gas outlet valve 18 is opened to connect the third gas outlet pipeline 12 with the inside of the connecting pipeline 7, so that the buffer gas naturally diffuses into the three-way glass tube 110 along the third gas outlet pipeline 12 and the connecting pipeline 7. When the three-way glass tube 110 is filled with the buffer gas, the third gas outlet valve 18 is first closed to disconnect the third gas outlet pipeline 12 from the inside of the connecting pipeline 7, and then the third gas cylinder 6 is shut down to stop inflation.

[0047] During inflation, the gas mixing ratio among the inert gas, the buffer gas and the quenching gas is controlled by setting the flow ratio among the first gas flow meter 19, the second gas flow meter 20 and the third gas flow meter 21.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the utility model rather than to limit them. Although the embodiments of the utility model are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the utility model can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A gas filling device for a glass tube alkali metal gas chamber, characterized in that: It includes a vacuum pump, an alkali metal container, an alkali metal heater, a first gas cylinder and a connecting pipeline. The vacuum pump is connected to the connecting pipeline through an exhaust pipeline, the alkali metal container is connected to the connecting pipeline through an alkali metal pipeline, the first gas cylinder is connected to the connecting pipeline through a first gas outlet pipeline, and the connecting pipeline is connected to the glass tube alkali metal gas chamber; the first gas cylinder is filled with an inert gas, the alkali metal container contains an alkali metal releaser, and the alkali metal heater is used to heat the alkali metal releaser in the alkali metal container.

2. The inflatable device according to claim 1, characterized in that The first gas outlet pipeline is provided with a first gas outlet valve and a first gas flow meter.

3. The inflatable device according to claim 1, characterized in that: The inflation device also includes a second gas cylinder, which is connected to the connecting pipeline through a second gas outlet pipeline; the second gas cylinder is filled with buffer gas.

4. The inflator according to claim 3, characterized in that: The second gas outlet pipeline is provided with a second gas outlet valve and a second gas flow meter.

5. The inflation device according to claim 1 or 3, characterized in that: The inflation device also includes a third gas cylinder, which is connected to the connecting pipeline through a third gas outlet pipeline; the third gas cylinder is filled with quenching gas.

6. The inflator according to claim 5, characterized in that: The third gas outlet pipeline is provided with a third gas outlet valve and a third gas flow meter.

7. The inflator according to claim 1, characterized in that: An alkali metal valve is arranged in the alkali metal pipeline.

8. The inflator according to claim 1, characterized in that: A vacuum gauge and a stop valve are arranged in the air extraction pipeline.

9. The inflator according to claim 1, characterized in that: The connecting pipeline is bonded and fixed in the alkali metal gas chamber of the glass tube by vacuum sealant.

10. The inflator according to claim 1, characterized in that The alkali metal heater is an alcohol lamp.

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