CN211601559U - High-temperature evaporation source device arranged in vacuum of space strontium optical clock - Google Patents

Abstract

A high-temperature evaporation source device is arranged in a space strontium optical clock vacuum, a vacuum electrode is electrically connected with a heating device through a flange, a vacuum cavity is arranged outside the heating device, and the vacuum cavity is connected with an ion pump, a collimation cavity and an angle valve; the heating device is characterized in that bare wires of the heating wires are uniformly arranged and installed around a clamp pot connected with a collimator through machinable ceramic, thermocouple mounting holes are reserved at the bottom of the clamp pot, the thermocouple and the heating wires are connected with an external temperature control through integrated electrodes of a flange, the whole clamp pot is arranged in a heat insulation base and a heat insulation cover, the support columns of the flange are connected through universal bolts, the flange is connected with a vacuum cavity through bolts, the device has the advantages of vacuum inside arrangement, small size, good heat preservation performance, low energy consumption, convenience in disassembly and assembly and the like, and the device can be popularized and applied to the technical field of quantum standard evaluation.

Description

High-temperature evaporation source device arranged in vacuum of space strontium optical clock

Technical Field

The utility model belongs to the technical field of the mark is appraised to the quantum, concretely relates to place device of preparation strontium atom in vacuum.

Background

The atomic light clock is integrated, miniaturized and engineered according to development requirements of space navigation and the like.

The national time service center starts the research and development work of the strontium cold atomic photo-lattice clock in 2006, the primary and secondary cooling preparation, the photo-lattice loading, the clock transition detection, the closed-loop locking and part of key atom physical parameter experimental measurement of a strontium cold atomic sample are completed at present, and the miniaturization design improvement is carried out on the second set of system by comparing the first set of system so as to meet the development requirement of space navigation.

Disclosure of Invention

The utility model aims to solve the technical problem that it is external to overcome current strontium atom preparation facilities vacuum, and thermal insulation performance is poor, and is bulky, and the high technique of power consumption is not enough, provides a vacuum and embeds, and is small, and thermal insulation performance is good, and the energy consumption is little, easy dismounting's the built-in high temperature evaporation source device in space strontium optical clock vacuum.

The technical scheme for solving the technical problems is as follows: the vacuum electrode is electrically connected with the heating device through a flange, a vacuum cavity is arranged outside the heating device, and the vacuum cavity is connected with the ion pump, the collimation cavity and the angle valve;

the flange is: the flange comprises a flange body, wherein heat conduction and heat insulation grooves are formed in two ends of the flange body, at least one group of supporting frames are uniformly distributed on the end face of the heat conduction and heat insulation groove in the right end of the flange body, internal threads are formed in the right end of each supporting frame, an electrode through hole is formed in the center of the flange body, and a vacuum electrode penetrates through the flange through the electrode through hole;

the heating device is as follows: adiabatic base is connected through general bolt with the thermal-insulated medium plate, general bolt left end and support frame right-hand member threaded connection, the left end of pincers pot is connected with the thermal-insulated medium plate, be provided with the thermocouple between pincers pot and the thermal-insulated medium plate, the thermocouple is connected with the vacuum electrode electricity, pincers pot right-hand member is connected with the collimater, the outside cover of pincers pot is equipped with the heating jacket, be provided with the heater strip on the heating jacket, the heater strip is connected with the vacuum electrode electricity, the outside cover of heating jacket is equipped with thermal-insulated cover, the left end of thermal-insulated cover.

The utility model discloses a pincers pot does: the pincers pot body is a hollow cylindrical structure with an opening at the right end, internal threads and a closed left end, a thermocouple mounting hole is machined in the center of the left end of the pincers pot body, and at least 2 studs are uniformly distributed on the left end face of the pincers pot body.

The utility model discloses a thermal-insulated medium plate does: both ends all are processed about thermal-insulated medium plate body have with the endocentric adiabatic recess j of medium plate body of thermal-insulated medium plate, thermal-insulated medium plate body central point puts to process there is the medium plate thermocouple to cross the line hole, the equipartition processing has 2 at least stud holes on the adiabatic recess terminal surface of medium plate, the free end of double-screw bolt passes the stud hole and is fixed by self-locking nut, processing has 2 at least medium plate general bolt holes on the thermal-insulated medium plate body terminal surface, thermal-insulated medium plate body terminal surface processing has the medium plate heater strip to cross the.

The utility model discloses an adiabatic base does: the thermal insulation base body is a stepped circular plate with different diameters at the left end and the right end, an external thread is processed on the outer circumference of the circular plate at the right end, thermal insulation grooves concentric with the thermal insulation base body are processed at the two ends of the thermal insulation base body, a base thermocouple wire passing hole is processed at the central position of the thermal insulation base body, at least 2 base universal bolt passing holes are uniformly distributed and processed on the end face of the outer side of the thermal insulation base body, and a base heating wire passing hole is processed on the end face of the thermal insulation base body.

The utility model discloses a collimator does: the right end face of the collimator body is provided with a mounting hole, the left end of the collimator body is provided with an external thread matched with the internal thread at the right end of the pincer pot body, the upper part of the mounting hole is a rectangular through hole, the lower part of the mounting hole is a regular triangular through hole, the upper part of the mounting hole is provided with an oxygen-free copper pressing block, the lower part of the mounting hole is provided with a capillary tube, a threaded hole is correspondingly processed on the outer circumference of the collimator body and corresponds to the rectangular part of the mounting.

The utility model discloses a heating jacket does: the heating jacket body is of a hollow tubular structure, and a plurality of heating wire threading holes are axially processed on the pipe wall.

The utility model discloses a separate heat exchanger does: the stainless steel outer cover is sleeved on the ceramic inner cover, the left end of the stainless steel outer cover is connected with the connecting cover, the right end of the stainless steel outer cover is provided with an atom spraying hole, the left end of the connecting cover is provided with an internal thread matched with the external thread on the outer circumference of the heat insulation base, and the outer circumference of the connecting cover is provided with a vent hole.

The utility model discloses a be provided with adiabatic bush on the general bolt, be provided with adiabatic bush on the double-screw bolt between pincers pot body and the thermal-insulated medium plate.

The utility model discloses an adiabatic bush is less than the step type hollow cylinder structure of left end diameter for the right-hand member diameter.

The utility model discloses a processing of support frame circumference has heat-conduction heat insulation hole, and the radial processing of support frame free end internal thread department has bolt locking hole.

Compared with the prior art, the utility model has the following advantages:

1. the high-power armored electric heating tube is changed into a heating wire bare wire with better performance in vacuum, and the energy consumption is reduced to below 3W from more than 300W.

2. The ceramic heating sleeve can be processed, so that bare wires are uniformly distributed around the pincer pot, the heating wires are sheathed manually, the collimator cannot be heated well due to non-uniformity, and the risk of capillary blockage is increased. The heating unit has the support column that reduces heat conduction efficiency through processing and wholly arranges in the vacuum cavity, wholly integrated at first reduced the volume to the flange electrode on, secondly increased thermal insulation performance, finally because the bulk, the diminishing of quality have promoted holistic mechanical properties.

3. The machinable ceramic inner cover is added in the heat insulation cover, the roughness of the outer surface of the cover is improved, the heat radiation conduction efficiency is further reduced, and the overall heat insulation performance of the furnace is improved.

4. At thermal-insulated medium plate, set up two-sided adiabatic recess on the adiabatic base, connect the thermal-insulated medium plate, set up adiabatic bush on the general bolt of adiabatic base, the equipartition is provided with the double-screw bolt and sets up adiabatic bush on the double-screw bolt on the pincers pot, set up heat-conduction heat-insulating hole on the support column in order to reduce heat-conductive efficiency, promote the holistic thermal insulation performance of stove, it reaches human normal acceptance temperature to separate heat exchanger temperature through adiabatic base and flange joint, it is safer than the asbestos, the heat preservation form of tinfoil parcel.

The device has the advantages of low energy consumption, sufficient heating, good heat preservation capability, small volume, outstanding mechanical property, safety and simple disassembly, assembly and replacement. Can be popularized and applied to the technical field of quantum evaluation.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is an exploded schematic view of fig. 1.

Fig. 3 is a schematic view of the connection of the vacuum electrode 1, the flange 2 and the heating device 3 in fig. 1.

Fig. 4 is an exploded schematic view of fig. 3.

Fig. 5 is a schematic view of the connection of the flange 2 to the vacuum electrode 1 in fig. 4.

Fig. 6 is a schematic structural view of the jawarms 3-5 of fig. 4.

Fig. 7 is a cross-sectional view of fig. 6.

Figure 8 is a schematic view of the structure of the insulated middle panel 3-9 of figure 4.

Fig. 9 is a schematic view of the structure of the thermally insulating base 3-11 of fig. 4.

Fig. 10 is a schematic view of the structure of the collimator 3-2 of fig. 4.

Fig. 11 is a schematic view of the structure of the heating jacket 3-3 of fig. 4.

Fig. 12 is a schematic view of the structure of the heat shield 3-1 of fig. 4.

Fig. 13 is a schematic view of the construction of the insulating sleeve 3-7 of fig. 4.

In the figure: 1. a vacuum chamber; 2. a flange; 3. a heating unit; 4. an ion pump; 5. a vacuum chamber; 6. an angle valve; 7. A collimating cavity; 2-1, a support frame; 2-2, a flange body; 3-1, heat shield; 3-2, a collimator; 3-3, heating a sleeve; 3-4, heating wires; 3-5, clamping the pan; 3-6, a thermocouple; 3-7, a thermally insulating liner; 3-8, universal bolt; 3-9, heat insulation middle plate; 3-10, self-locking nut; 3-11, a heat-insulating base; 3-1-1, connecting cover; 3-1-2, ceramic inner cover; 3-1-3, stainless steel outer cover; 3-2-1, a collimator body; 3-2-2, oxygen-free copper briquetting; 3-2-3, capillary; 3-2-4, inner hexagonal flat head set screws; 3-3-1, heating jacket body; 3-5-1, a pincer pot body; 3-5-2, a stud; 3-9-1, a heat insulation middle plate body; 3-11-1, a thermally insulating base body; a. a thermally conductive and thermally insulating tank; b. An electrode through hole; c. a thermally conductive insulating hole; d. a bolt locking hole; e. a thermocouple mounting hole; f. a middle plate thermocouple wire passing hole; g. the middle plate heating wire passes through the wire holes; h. a stud hole; i. bolt holes; j. a middle plate heat insulation groove; k. A base heat insulation groove; m, base heating wire passing holes; n, base thermocouple wire-passing holes; o, mounting holes; p, a threaded hole; q, heating wire threading holes; x, a vent hole; y, atom injection hole.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and examples, but the present invention is not limited to these examples.

Example 1

In fig. 1, 2, 3, 5, the utility model relates to a space strontium bell vacuum built-in high temperature evaporation source device, vacuum electrode 1 is located flange 2 right-hand member and is connected with heating device 3 through flange 2, flange 2 is connected with the vacuum chamber 5 that covers outside heating device 3, vacuum chamber 5 provides a vacuum environment for this device, the first export of vacuum chamber 5 is installed with ion pump 4 through the connection of screw fastening connecting piece, ion pump 4 is used for maintaining ultrahigh vacuum, the second export of vacuum chamber 5 is installed with collimation cavity 7 through the connection of screw fastening piece, the orthogonal two-dimensional light beam of external squeeze-in carries out the plastic with the atomic beam that heating unit 3 prepared in collimation cavity 7, the third export of vacuum chamber 5 is installed with angle valve 6 through the fixed connection of screw fastening piece, angle valve 6 is used for preparing vacuum, after the ion pump entered the maintenance phase, the angle valve can be closed, the flange 2 of the embodiment is composed of a support frame 2-1 and a flange body 2-2, heat conduction and heat insulation grooves a are respectively processed at two ends of the flange body 2-2, the heat conduction and heat insulation grooves a form a cavity and can better prevent heat transfer, at least 2 groups of support frames 2-1 are uniformly processed on the end face of the heat conduction and heat insulation groove a at the right end of the flange body 2-2, internal threads are processed at the right end of the support frame 2-1, an electrode through hole b is processed at the center of the flange body 2-2, and the vacuum electrode 1 penetrates through the flange 2 through the electrode through hole b; furthermore, a heat conduction and insulation hole c is formed in the circumferential direction of the support frame 2-1, heat transmission from the heating unit to the electrode flange is reduced through the heat conduction and insulation hole c, and a bolt locking hole d is formed in the radial direction of the inner thread of the free end of the support frame 2-1.

In figures 4, 8, 9 and 13, a heating device 3 is formed by connecting a heat shield 3-1, a collimator 3-2, a heating sleeve 3-3, a heating wire 3-4, a pincer pot 3-5, a thermocouple 3-6, a heat insulation bush 3-7, a universal bolt 3-8, a heat insulation middle plate 3-9, a self-locking nut 3-10 and a heat insulation base 3-11, wherein the heat insulation middle plate 3-9 of the embodiment is composed of a heat insulation middle plate body 3-9-1, middle plate heat insulation grooves j concentric with the heat insulation middle plate 3-9-1 are respectively processed at the left end and the right end of the heat insulation middle plate body 3-9-1, the middle plate heat insulation grooves j form a cavity and can better prevent heat transfer, a middle plate wire-passing thermocouple hole f is processed at the center of the heat insulation middle plate body 3-9-, 3 stud holes h are uniformly formed in the end face of the middle plate heat insulation groove j, 3 middle plate general bolt holes i are formed in the end face of the heat insulation middle plate body 3-9-1, and middle plate heating wire passing holes g are formed in the end face of the heat insulation middle plate body 3-9-1. The heat insulation base 3-11 is composed of a heat insulation base body 3-11-1, the heat insulation base body 3-11-1 is a step-shaped circular plate with different diameters at the left end and the right end, an external thread is processed on the outer circumference of the circular plate at the right end, base heat insulation grooves k which are concentric with the heat insulation base body 3-11-1 are processed at the two ends of the heat insulation base body 3-11-1, a cavity is formed by the base heat insulation grooves k, the heat transmission can be better prevented, a base thermocouple wire passing hole n is processed at the central position of the heat insulation base body 3-11-1, 3 base universal bolt passing holes l are uniformly processed on the end surface at the outer side of the heat insulation base body 3-11-1, a base heating wire passing hole m is processed on the end surface of the heat insulation base body 3-11-1, the base heating wire passing hole m, the base universal bolt through hole l is matched with the middle plate universal bolt hole i, the universal bolts 3-8 penetrate through the base universal bolt through hole l and are connected with the heat insulation middle plate 3-9 and the heat insulation base 3-11, furthermore, in order to prevent heat conduction, the universal bolts 3-8 are provided with heat insulation bushes 3-7, the heat insulation bushes 3-7 are of stepped hollow cylindrical structures, the diameters of the right ends of the heat insulation bushes are smaller than those of the left ends of the heat insulation bushes, and the heat insulation bushes 3-7 are made of machinable ceramics. In the embodiment, 1 heat insulation lining 3-7 is respectively arranged at two ends of a heat insulation middle plate 3-9 and a heat insulation base 3-11 on a universal bolt 3-8, the left end of the universal bolt 3-8 is in threaded connection with the right end of a support frame 2-1, a hexagon socket locking screw is arranged in a bolt locking hole d to transversely block the universal bolt 3-8 to prevent the universal bolt from falling off, the heat insulation middle plate 3-9 is connected with the left end of a pincer pot 3-5, and strontium atoms or other alkaline earth metals are filled in the pincer pot 3-5.

In the figures 6 and 7, the pincer pot 3-5 is formed by connecting a pincer pot body 3-5-1 and a stud 3-5-2, the pincer pot body 3-5-1 is a hollow cylindrical structure with an opening at the right end and an internal thread and a closed left end, a thermocouple mounting hole e is processed at the center position of the left end of the pincer pot body 3-5-1, the thermocouple 3-6 is installed in the thermocouple mounting hole e, the thermocouple 3-6 is electrically connected with a vacuum electrode 1 through a wire passing through a middle plate thermocouple wire passing hole f and a base thermocouple wire passing hole n, 3 studs 3-5-2 are uniformly welded on the left end surface of the pincer pot body 3-5-1, the free end of the stud 3-5-2 passes through a stud hole h and is fixed by a self-locking nut 3-10, and the stud 3-5-2 between the pincer pot body 3-5-1 and a heat insulation middle plate 3-9 The right end of the pincer pot 3-5 is connected with the collimator 3-2.

In the figure 10, a collimator 3-2 is formed by connecting a collimator body 3-2-1, an oxygen-free copper pressing block 3-2-2, a capillary tube 3-2-3 and an inner hexagonal flat-head set screw 3-2-4, a mounting hole o is processed on the right end face of the collimator body 3-2-1, an external thread matched with the internal thread on the right end of the pincer pot body 3-5-1 is processed on the left end, the upper part of the mounting hole o is a rectangular through hole, the lower part of the mounting hole o is a regular triangular through hole, the oxygen-free copper pressing block 3-2-2 is installed on the upper part of the mounting hole o, the capillary tube 3-2-3 is installed on the lower part of the mounting hole o, a threaded hole p is processed on the outer circumference of the collimator body 3-2-1 corresponding to the rectangular part of the mounting hole, the inner hexagonal flat head set screw 3-2-4 compresses the capillary tube 3-2-3 through the oxygen-free copper pressing block 3-2-2, and the heating sleeve 3-3 is sleeved outside the pincer pot 3-5.

In fig. 11, the heating jacket 3-3 is composed of a heating jacket body 3-3-1, the heating jacket body 3-3-1 is a hollow tubular structure, since the heating wire 3-6 is a bare wire, the heating jacket body 3-3-1 is made of ceramics, a plurality of heating wire threading holes q are axially processed on the tube wall, the head end of the heating wire 3-4 penetrates through the first heating wire threading hole q, bypasses all the heating wire threading holes q, and penetrates out from the last heating wire threading hole q, the head end and the tail end of the heating wire 3-4 are respectively electrically connected with the vacuum electrode 1 through wires penetrating through the middle plate heating wire threading hole g and the base heating wire threading hole m, and a heat insulation cover 3-1 is sleeved outside the heating jacket 3-3.

In fig. 12, the heat shield 3-1 is composed of a connecting shield 3-1-1, a ceramic inner shield 3-1-2, the stainless steel outer cover 3-1-3 is connected, the stainless steel outer cover 3-1-3 is sleeved on the ceramic inner cover 3-1-2, the left end of the stainless steel outer cover 3-1-3 is welded and fixed with the connecting cover 3-1-1, the right end of the stainless steel outer cover 3-1-3 is provided with an atom injection hole y, the left end of the connecting cover 3-1-1 is provided with an internal thread matched with an external thread on the outer circumference of the heat insulation base 3-11, the left end of the heat insulation cover 3-1 is connected with the right end of the heat insulation base 3-11 in a threaded manner, the outer circumference of the connecting cover 3-1-1 is provided with a vent hole x, and the adsorption speed of gas released by an internal part and an external part of the heat insulation.

Example 2

In this embodiment, 4 stud holes h are uniformly formed in the end face of the middle plate heat insulation groove j in embodiment 1, 4 middle plate general bolt holes i are formed in the end face of the heat insulation middle plate body 3-9-1, 4 base general bolt through holes l are uniformly formed in the end face of the heat insulation base body 3-11-1, 4 studs 3-5-2 are uniformly welded on the left end face of the pincer pot body 3-5-1, and the connection relationship between the rest parts and parts is completely the same as that in embodiment 1.

In the description of the present invention, it is to be understood that the terms "left end", "right end", "inside", "head end", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "disposed", "mounted", and the like are to be understood broadly, and may be, for example, fixedly connected, integrally connected, or detachably connected; or communication between the interior of the two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation. The above detailed description is only specific to the feasible embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments, modifications and alterations without departing from the spirit of the present invention should be included in the scope of the present invention.

Claims (10)

1. The utility model provides a space strontium light clock vacuum embeds high temperature evaporation source device which characterized in that: the vacuum electrode (1) is electrically connected with the heating device (3) through the flange (2), a vacuum cavity (5) is arranged outside the heating device (3), and the vacuum cavity (5) is connected with the ion pump (4), the collimation cavity (7) and the angle valve (6);

the flange (2) is: both ends of the flange body (2-2) are respectively provided with a heat conduction and insulation groove (a), the end face of the heat conduction and insulation groove (a) at the right end of the flange body (2-2) is uniformly provided with at least 2 groups of supporting frames (2-1), the right end of each supporting frame (2-1) is provided with an internal thread, the center of the flange body (2-2) is provided with an electrode through hole (b), and a vacuum electrode (1) penetrates through the flange (2) through the electrode through hole (b);

the heating device (3) is: the heat insulation base (3-11) is connected with the heat insulation middle plate (3-9) through a universal bolt (3-8), the left end of the universal bolt (3-8) is in threaded connection with the right end of the support frame (2-1), the left end of the pincer pot (3-5) is connected with the heat insulation middle plate (3-9), a thermocouple (3-6) is arranged between the pincer pot (3-5) and the heat insulation middle plate (3-9), the thermocouple (3-6) is electrically connected with the vacuum electrode (1), the right end of the pincer pot (3-5) is connected with the collimator (3-2), a heating sleeve (3-3) is sleeved outside the pincer pot (3-5), a heating wire (3-4) is arranged on the heating sleeve (3-3), the heating wire (3-4) is electrically connected with the vacuum electrode (1), a heat insulation cover (3-1) is sleeved outside the heating sleeve (3-3, the left end of the heat insulation cover (3-1) is connected with the right end of the heat insulation base (3-11).

2. The vacuum built-in high-temperature evaporation source device of the space strontium optical clock according to claim 1, wherein the pincer pots (3-5) are: the tonger body (3-5-1) is of a hollow cylindrical structure with an opening at the right end, internal threads and a closed left end, a thermocouple mounting hole (e) is formed in the center of the left end of the tonger body (3-5-1), and at least 2 studs (3-5-2) are uniformly distributed on the left end face of the tonger body (3-5-1).

3. The vacuum built-in high-temperature evaporation source device of the space strontium optical clock according to claim 2, wherein the heat insulation middle plate (3-9) is: the left end and the right end of the heat insulation middle plate body (3-9-1) are respectively provided with a middle plate heat insulation groove (j) concentric with the heat insulation middle plate body (3-9-1), the center of the heat insulation middle plate body (3-9-1) is provided with a middle plate thermocouple wire passing hole (f), the end face of the middle plate heat insulation groove (j) is uniformly provided with at least 2 stud holes (h), the free end of each stud (3-5-2) penetrates through the stud hole (h) and is fixed by a self-locking nut (3-10), the end face of the heat insulation middle plate body (3-9-1) is provided with at least 2 middle plate universal bolt holes (i), and the end face of the heat insulation middle plate body (3-9-1) is provided with a middle plate heating wire passing hole (.

4. A high-temperature evaporation source device in vacuum for a space strontium optical clock as claimed in claim 3, wherein said heat-insulating base (3-11) is: the heat insulation base body (3-11-1) is a stepped circular plate with the left end and the right end having different diameters, an external thread is processed on the outer circumference of the circular plate at the right end, base heat insulation grooves (k) concentric with the heat insulation base body (3-11-1) are processed at the two ends of the heat insulation base body (3-11-1), a base thermocouple wire passing hole (n) is processed at the central position of the heat insulation base body (3-11-1), at least 2 base general bolt passing holes (l) are uniformly processed on the end face of the outer side of the heat insulation base body (3-11-1), and a base heating wire passing hole (m) is processed on the end face of the heat insulation base body (3-11-1).

5. The vacuum built-in high-temperature evaporation source device of the space strontium optical clock according to claim 2, characterized in that the collimator (3-2) is: the right end face of the collimator body (3-2-1) is processed with a mounting hole (o), the left end of the collimator body is processed with an external thread matched with the internal thread at the right end of the tonger body (3-5-1), the upper part of the mounting hole (o) is a rectangular through hole, the lower part of the mounting hole is a regular triangle through hole, the upper part of the mounting hole (o) is provided with an oxygen-free copper pressing block (3-2-2), the lower part of the mounting hole (o) is provided with a capillary tube (3-2-3), the outer circumference of the collimator body (3-2-1) is correspondingly processed with a threaded hole (p) with the rectangular part of the mounting hole (o), and an inner hexagonal flat head fastening.

6. The vacuum built-in high-temperature evaporation source device of the space strontium optical clock according to claim 2, characterized in that the heating jacket (3-3) is: the heating jacket body (3-3-1) is of a hollow tubular structure, and a plurality of heating wire threading holes (q) are axially processed on the pipe wall.

7. The vacuum built-in high-temperature evaporation source device of the space strontium optical clock according to claim 4, wherein the heat shield (3-1) is: the stainless steel outer cover (3-1-3) is sleeved on the ceramic inner cover (3-1-2), the left end of the stainless steel outer cover (3-1-3) is connected with the connecting cover (3-1-1), the right end of the stainless steel outer cover is provided with an atom injection hole (y), the left end of the connecting cover (3-1-1) is provided with an internal thread matched with the external thread on the outer circumference of the heat insulation base (3-11), and the outer circumference of the connecting cover (3-1-1) is provided with a vent hole (x).

8. The vacuum built-in high-temperature evaporation source device of the space strontium optical clock according to claim 3, characterized in that: the universal bolt (3-8) is provided with a heat insulation bushing (3-7), and the stud (3-5-2) between the tonger body (3-5-1) and the heat insulation middle plate (3-9) is provided with the heat insulation bushing (3-7).

9. The vacuum built-in high-temperature evaporation source device of the space strontium optical clock according to claim 8, characterized in that: the heat insulation lining (3-7) is of a step type hollow cylindrical structure, the diameter of the right end of the heat insulation lining is smaller than that of the left end of the heat insulation lining.

10. The vacuum built-in high-temperature evaporation source device of the space strontium optical clock according to claim 1, characterized in that: the supporting frame (2-1) is circumferentially provided with a heat conduction heat insulation hole (c), and the free end of the supporting frame (2-1) is radially provided with a bolt locking hole (d).

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