Liquid-helium-free extremely-low-temperature refrigerator device

Abstract

The utility model discloses a liquid-helium-free extremely-low-temperature refrigerating machine device which comprises a refrigerating machine, the output end and the input end of the refrigerating machine are both connected with connecting devices, and each connecting device comprises a conveying pipe, a small gear, a large gear, an unlocking sleeve, an unlocking block, a tension spring, a clamping frame, a gasket, a connecting pipe, a clamping groove, a limiting plate, a threaded rod and a motor. The connecting pipes are arranged at the input end and the output end of the refrigerating machine respectively, the conveying pipes are installed in the connecting pipes, the unlocking sleeves are arranged on the outer sides of the connecting pipes in a sleeving mode, the screws and the unlocking sleeves are movably connected through threads, the limiting plates are arranged on the outer sides of the connecting pipes, the small gears are installed at one ends of the screws, the large gears are arranged on the outer sides of the connecting pipes in a sleeving mode, and the motor is connected with one screw. The clamping groove is formed in the outer side of the conveying pipe, the clamping frame is clamped with the clamping groove, the unlocking blocks are arranged on the two sides of the clamping frame, the tension spring is arranged on the inner side of the clamping frame, the gasket is arranged on the inner side of the connecting pipe, and a clamping device is arranged on the refrigerating machine. The use convenience and maintainability of the refrigerating machine are fully guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration devices, and more specifically, to a liquid helium-free ultra-low temperature refrigerator device. Background Art

[0002] In modern scientific research and industrial production, liquid helium-free ultra-low temperature refrigerators play a vital role. They can provide ultra-low temperature environments and are widely used in cutting-edge fields such as quantum computing, superconducting materials, aerospace, etc. However, existing liquid helium-free ultra-low temperature refrigerators still have some shortcomings in design and use, which affects their performance and promotion and application.

[0003] First of all, pipeline connection is a key link in the liquid helium-free ultra-low temperature refrigerator device. The pipeline is used to transport refrigerant and transfer heat. The reliability and sealing of its connection directly affect the refrigeration efficiency and stability of the refrigerator. However, in the prior art, the pipeline connection operation is usually cumbersome and requires the use of special tools and complex steps. It is not only time-consuming and labor-intensive, but also requires high skills of the operator. What is more serious is that the existing connection method cannot fully guarantee the sealing of the connection and there is a risk of leakage. Since the liquid helium-free ultra-low temperature refrigerator usually works in an ultra-low temperature environment, once the refrigerant leaks, it will not only lead to a decrease in refrigeration efficiency, but also may cause safety accidents, bringing serious adverse consequences. Although some quick connection structures, such as clamp type and buckle type, are used in the prior art, most of these structures are only suitable for small equipment. For large liquid helium-free ultra-low temperature refrigerator devices, the reliability and sealing of their connections are still difficult to guarantee, which limits their scope of application.

[0004] Secondly, the liquid helium-free ultra-low temperature refrigerator device is composed of multiple components, such as a compressor, a heat exchanger, an expander, etc. These components need to be reliably connected and fixed to ensure the normal operation of the refrigerator. However, in the prior art, the connection between the components usually adopts fasteners such as bolts, and tools such as wrenches are required during installation and disassembly, which is cumbersome to operate. Especially in a small space, the disassembly and assembly of bolts is more difficult and requires a lot of time and effort, which not only reduces the assembly efficiency of the refrigerator, but also increases the maintenance cost. In actual applications, the liquid helium-free ultra-low temperature refrigerator device may need to frequently replace and repair components. If cumbersome disassembly and assembly operations are required every time, it will seriously affect the use efficiency and maintainability of the equipment. In addition, the use of bolted connections may also bring other problems, such as loose bolts and corrosion, which further affect the reliability and service life of the refrigerator. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the problems existing in the prior art, the utility model provides a liquid helium-free ultra-low temperature refrigerator device to solve the technical problems mentioned in the background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a liquid helium-free ultra-low temperature refrigerator device, including a refrigerator, wherein the output end and the input end of the refrigerator are both connected with a connecting device, wherein the connecting device includes a delivery pipe, a small gear, a large gear, an unlocking sleeve, an unlocking block, a tension spring, a snap-fit ​​frame, a gasket, a connecting pipe, a snap-fit ​​groove, a limit plate, a screw and a motor, wherein the connecting pipes are respectively arranged at the input end and the output end of the refrigerator, wherein the delivery pipe can be detachably installed in the connecting pipe, and both the connecting pipe and the delivery pipe are made of hard materials, wherein the unlocking sleeve can be movably sleeved on the outside of the connecting pipe, wherein the screw and the limit plate ... The motor is detachably connected to the chassis and the motor is removably connected to the chassis, the motor being detachably connected to the chassis and the motor being removably connected to the chassis.

[0009] The utility model is further configured that a rubber ring is provided on the outer side of the delivery pipe, a clamping groove is provided on the inner side of the connecting pipe, and the rubber ring is clamped in the corresponding clamping groove.

[0010] The utility model is further configured as follows: the clamping device includes a plug-in rod, a guide block, a plug-in sleeve, a clamping groove, a clamping block and a limit sleeve; the plug-in sleeve is arranged at a corresponding position on the refrigerator; the plug-in rod can be movably installed in the limit sleeve; the limit sleeve can be detachably installed in the plug-in sleeve; the guide block is arranged at the bottom end of the plug-in rod; the clamping block is arranged on the outside of the guide block; and one end of the clamping block is engaged with the clamping groove; the clamping groove is provided on the inner side of the plug-in sleeve; and the setting of the clamping device can realize rapid disassembly and assembly of various components.

[0011] The utility model is further configured that a handle is provided on one side of the plug-in rod, and the handle is fixedly mounted on the top end of the plug-in rod. The configuration of the handle facilitates pulling the plug-in rod without the aid of tools.

[0012] The utility model is further configured that a slide rail is provided on the outer side of the limit sleeve, a slide groove is provided on the inner side of the plug sleeve, the slide rail is matched with the slide groove, and the slide rail and the slide groove mainly play a guiding role.

[0013] The utility model is further configured such that a fixing plate is provided on the outer side of the plug-in rod, and the fixing plate is installed on the top end of the limiting sleeve. The configuration of the fixing plate makes the connection more stable.

[0014] The utility model is further configured that a push spring is arranged in the clamping groove, and the push spring contacts one side of the clamping block. The configuration of the push spring ensures that the clamping block can be stably withdrawn from the clamping groove.

[0015] The utility model is further configured that a spring is provided on the outside of the plug-in rod, and the spring is movably installed in the limiting sleeve. The provision of the spring facilitates the automatic resetting of the plug-in rod and is convenient for reuse.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a liquid helium-free ultra-low temperature refrigerator device, which has the following beneficial effects:

[0018] 1. The connection device adopts the design of components such as delivery pipe, connecting pipe, unlocking sleeve and snap-fit ​​frame to realize the rapid connection and reliable sealing of the pipeline. This design is easy to operate. The unlocking sleeve can be moved by the rotation of the screw and gear driven by the motor, thereby controlling the snap-fit ​​state of the snap-fit ​​frame. When connecting, just insert the delivery pipe into the connecting pipe to reverse the motor, and the snap-fit ​​frame can automatically snap into the snap-fit ​​groove, and the gasket and rubber ring can cooperate to achieve reliable sealing of the connection. The design of the connection device greatly simplifies the operation steps of pipeline connection and improves the connection efficiency. At the same time, the mechanical locking mechanism is used to ensure the reliability and sealing of the connection and avoid the risk of refrigerant leakage.

[0019] 2. The clamping device adopts the design of components such as the plug-in rod, the guide block, the clamping block and the limit sleeve to realize the rapid assembly and disassembly of the components. This design utilizes the special structure of the guide block and the clamping block. The controllable engagement of the clamping block in the clamping groove is realized by the movement of the plug-in rod. When disassembling, it is only necessary to pull the handle to drive the plug-in rod and the limit sleeve to be pulled out of the plug-in sleeve together to realize the rapid removal of the components. When installing, it is only necessary to align the slide rail on the limit sleeve with the slide groove on the plug-in sleeve and operate in the reverse steps of disassembly. The design of the clamping device makes the assembly and disassembly of the components simple and convenient, without the need for cumbersome bolt connections, which greatly improves the maintainability of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a liquid helium-free ultra-low temperature refrigerator device in the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0022] Figure 3 It is a cross-sectional structural diagram of the clamping device part of the utility model;

[0023] Figure 4 It is a schematic cross-sectional structure diagram of the second angle of the clamping device part of the utility model;

[0024] Figure 5 It is a schematic cross-sectional structure diagram of the connecting device part in the utility model.

[0025] In the figure: 1. refrigerator; 2. delivery pipe; 3. small gear; 4. large gear; 5. unlocking sleeve; 6. unlocking block; 7. tension spring; 8. snap-fit ​​frame; 9. gasket; 10. connecting pipe; 11. snap-fit ​​groove; 12. limit plate; 13. screw; 14. motor; 15. rubber ring; 16. snap-fit ​​groove; 17. plug-in rod; 18. guide block; 19. plug-in sleeve; 20. snap-fit ​​groove; 21. snap-fit ​​block; 22. limit sleeve; 23. handle; 24. slide rail; 25. slide groove; 26. fixing plate; 27. push spring; 28. spring. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0029] See also Figure 1-5A liquid helium-free cryogenic refrigerator device comprises a refrigerator 1, wherein the output end and the input end of the refrigerator 1 are both connected with a connecting device, wherein the connecting device comprises a delivery pipe 2, a small gear 3, a large gear 4, an unlocking sleeve 5, an unlocking block 6, a tension spring 7, a snap-fit ​​frame 8, a gasket 9, a connecting pipe 10, a snap-fit ​​groove 11, a limit plate 12, a screw 13 and a motor 14, wherein the connecting pipe 10 is respectively arranged at the input end and the output end of the refrigerator 1, the delivery pipe 2 is detachably installed in the connecting pipe 10, and the connecting pipe 10 and the delivery pipe 2 are both made of hard materials, the unlocking sleeve 5 is movably sleeved on the outside of the connecting pipe 10, the screw 13 is movably connected to the limit plate 12, and the screw The rod 13 and the unlocking sleeve 5 are movably connected by threads, the limit plate 12 is fixedly arranged on the outside of the connecting tube 10, the motor 14 is detachably installed on one side of the connecting tube 10, the pinion gears 3 are respectively installed at one end of the screw rod 13, the large gear 4 is movably sleeved on the outside of the connecting tube 10, and the large gear 4 is meshed with the pinion gear 3, the output end of the motor 14 is connected to one of the screw rods 13, the engaging groove 11 is opened on the outside of the conveying pipe 2, one end of the engaging frame 8 is inserted into the engaging groove 11, the unlocking blocks 6 are arranged on both sides of the engaging frame 8, the tension spring 7 is arranged on the inside of the engaging frame 8, the gasket 9 is arranged on the inside of the connecting tube 10, and a clamping device is arranged on the refrigerator 1.

[0030] A rubber ring 15 is disposed on the outer side of the delivery pipe 2 , and a clamping groove 16 is provided on the inner side of the connecting pipe 10 . The rubber ring 15 is clamped in the corresponding clamping groove 16 .

[0031] In this embodiment, when it is necessary to connect the delivery pipe 2 to the refrigerator 1, the motor 14 is turned on, and the motor 14 drives the corresponding pinion 3 to rotate through the screw 13 connected to the output end, where the pinion 3 drives the large gear 4 meshing with it to rotate, and then the large gear 4 drives the other pinions 3 and the screw 13 to rotate. Since the screw 13 and the adjusting sleeve are movably connected through threads, and the screw 13 is limited by the limiting plate 12, when the screw 13 rotates, the unlocking sleeves 5 on both sides will move relatively inward, thereby lifting the unlocking block 6, and then the unlocking block 6 will drive the locking frame 8 to move and stretch the tension spring 7 arranged on the inside, and then when the unlocking sleeve 5 completely lifts the unlocking block 6, one end of the locking frame 8 is flush with the inner wall of the connecting pipe 10, and then the delivery pipe 2 is inserted. When the conveying pipe 2 cannot move further, the motor 14 is reversed, and then the screw 13 drives the unlocking sleeve 5 to move relatively outward, and then the unlocking block 6 loses the limit of the unlocking sleeve 5, and then the tension spring 7 drives the locking frame 8 to reset, so that one end of the locking frame 8 is inserted into the locking groove 11. Due to the unique slope design in the locking groove 11, when the unlocking block 6 completely loses the limit of the unlocking sleeve 5, the motor 14 is turned off, the locking frame 8 is completely inserted into the locking groove 11, and one end of the conveying pipe 2 is pressed against the gasket 9 set on the inner side of the connecting pipe 10 to ensure the sealing of the connection. At the same time, the rubber ring 15 enters the corresponding locking groove 16 and returns to its original state.

[0032] See also Figure 1-4 As an implementation method of a liquid helium-free ultra-low temperature refrigerator device for a clamping device: the clamping device includes a plug rod 17, a guide block 18, a plug sleeve 19, a clamping groove 20, a clamping block 21 and a limit sleeve 22, the plug sleeve 19 is arranged at a corresponding position on the refrigerator 1, the plug rod 17 can be movably installed in the limit sleeve 22, the limit sleeve 22 can be detachably installed in the plug sleeve 19, the guide block 18 is arranged at the bottom end of the plug rod 17, the clamping block 21 is arranged on the outside of the guide block 18, and one end of the clamping block 21 is engaged with the clamping groove 20, and the clamping groove 20 is opened on the inner side of the plug sleeve 19.

[0033] A handle 23 is provided on one side of the plug-in rod 17 , and the handle 23 is fixedly mounted on the top of the plug-in rod 17 .

[0034] A slide rail 24 is disposed on the outer side of the limiting sleeve 22 , and a slide groove 25 is provided on the inner side of the plug sleeve 19 , and the slide rail 24 is matched with the slide groove 25 .

[0035] A fixing plate 26 is disposed outside the plug rod 17 , and the fixing plate 26 is mounted on the top of the limiting sleeve 22 .

[0036] A push spring 27 is provided in the clamping groove 20 , and the push spring 27 contacts one side of the clamping block 21 .

[0037] A spring 28 is disposed outside the plug rod 17 , and the spring 28 is movably installed in the limiting sleeve 22 .

[0038] More specifically, when it is necessary to disassemble, maintain or replace a certain component on the refrigerator 1, press the fixing plate 26 so that the limit sleeve 22 does not move, and then pull the corresponding plug rod 17 through the corresponding handle 23, the plug rod 17 will compress the spring 28, and then the plug rod 17 will slide in the limit sleeve 22, and then the plug rod 17 will drive the guide block 18 to move. Due to the special structural design of the guide block 18 and the automatic reset feature of the push spring 27, the push spring 27 will slowly reset and make one side of the clamping block 21 start to move. Finally, it keeps in contact with the guide block 18. When the handle 23 can no longer be pulled, the push spring 27 has completely pushed the clamping block 21 out of the clamping groove 20, and then the fixing plate 26 is loosened, and the handle 23 is continued to be pulled, so that the limiting sleeve 22 and the plug-in rod 17 can be pulled out of the plug-in sleeve 19 together, and the slide rail 24 will slide in the slide groove 25. When the corresponding components are maintained or replaced, the slide rail 24 set on the outside of the limiting sleeve 22 is aligned with the slide groove 25 opened on the inner side of the plug-in sleeve 19, and then the corresponding components can be installed on the refrigerator 1 according to the above process.

[0039] In summary, when the overall equipment is in use or running: when it is necessary to connect the delivery pipe 2 to the refrigerator 1, turn on the motor 14, and the motor 14 drives the corresponding small gear 3 to rotate through the screw 13 connected to the output end, where the small gear 3 drives the large gear 4 meshing with it to rotate, and then the large gear 4 drives the other small gears 3 and the screw 13 to rotate. Since the screw 13 and the adjusting sleeve are movably connected through threads, and the screw 13 is limited by the limiting plate 12, when the screw 13 rotates, the unlocking sleeves 5 on both sides will move relatively inward, thereby lifting the unlocking block 6, and then the unlocking block 6 will drive the locking frame 8 to move and stretch the tension spring 7 arranged on the inside, and then when the unlocking sleeve 5 completely lifts the unlocking block 6, one end of the locking frame 8 is flush with the inner wall of the connecting pipe 10, and then the delivery pipe 2 is connected. The tube 2 is inserted into the connecting tube 10. During this process, the rubber ring 15 arranged on the outside of the conveying tube 2 will be squeezed and deformed. When the conveying tube 2 cannot move further, the motor 14 is reversed, and then the screw 13 drives the unlocking sleeve 5 to move relatively to the outside, and then the unlocking block 6 loses the limit of the unlocking sleeve 5, and then the tension spring 7 drives the locking frame 8 to reset, so that one end of the locking frame 8 is inserted into the locking groove 11. Due to the unique slope design in the locking groove 11, when the unlocking block 6 completely loses the limit of the unlocking sleeve 5, the motor 14 is turned off, the locking frame 8 is completely inserted into the locking groove 11, and one end of the conveying tube 2 is pressed against the gasket 9 arranged on the inner side of the connecting tube 10 to ensure the sealing of the connection. At the same time, the rubber ring 15 enters the corresponding locking groove 16 and returns to its original state.

[0040] When it is necessary to disassemble, maintain or replace a certain component on the refrigerator 1, press the fixing plate 26 so that the limit sleeve 22 does not move, and then pull the corresponding plug rod 17 through the corresponding handle 23, the plug rod 17 will compress the spring 28, and then the plug rod 17 will slide in the limit sleeve 22, and then the plug rod 17 will drive the guide block 18 to move. Due to the special structural design of the guide block 18 and the automatic reset feature of the push spring 27, the push spring 27 will slowly reset and make one side of the clamping block 21 always aligned with the guide block 18. When the handle 23 can no longer be pulled, the push spring 27 has completely pushed the card block 21 out of the card slot 20, and then the fixing plate 26 is released, and the handle 23 is continued to be pulled, so that the limit sleeve 22 and the plug rod 17 can be pulled out of the plug sleeve 19 together, and the slide rail 24 will slide in the slide groove 25. After the maintenance or replacement of the corresponding parts is completed, the slide rail 24 set on the outside of the limit sleeve 22 is aligned with the slide groove 25 opened on the inside of the plug sleeve 19, and then the corresponding parts can be installed on the refrigerator 1 according to the above process.

[0041] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A liquid helium-free cryogenic refrigerator device, comprising a refrigerator (1), characterized in that: The output end and the input end of the refrigerator (1) are both connected to a connecting device, and the connecting device comprises a delivery pipe (2), a small gear (3), a large gear (4), an unlocking sleeve (5), an unlocking block (6), a tension spring (7), a snap-fit ​​frame (8), a washer (9), a connecting pipe (10), a snap-fit ​​groove (11), a limit plate (12), a screw (13) and a motor (14). The connecting pipe (10) is respectively arranged at the input end and the output end of the refrigerator (1), the delivery pipe (2) is installed in the connecting pipe (10), the unlocking sleeve (5) is sleeved on the outside of the connecting pipe (10), and the screw (13) and the unlocking sleeve are respectively arranged at the input end and the output end of the refrigerator (1). (5) is movably connected by threads, the limit plate (12) is arranged on the outside of the connecting tube (10), the small gear (3) is installed on one end of the screw rod (13), the large gear (4) is sleeved on the outside of the connecting tube (10), the motor (14) is connected to one of the screw rods (13), the engaging groove (11) is opened on the outside of the conveying tube (2), the engaging frame (8) is engaged with the engaging groove (11), the unlocking block (6) is arranged on both sides of the engaging frame (8), the tension spring (7) is arranged on the inside of the engaging frame (8), the gasket (9) is arranged on the inside of the connecting tube (10), and the refrigerator (1) is provided with an engaging device.

2. The liquid helium-free cryogenic refrigerator device according to claim 1, characterized in that: The outer side of the delivery pipe (2) is provided with a rubber ring (15), the inner side of the connecting pipe (10) is provided with a clamping groove (16), and the rubber ring (15) is clamped in the corresponding clamping groove (16).

3. A liquid helium-free cryogenic refrigerator device according to claim 1 or 2, characterized in that: The clamping device comprises a plug rod (17), a guide block (18), a plug sleeve (19), a clamping groove (20), a clamping block (21) and a limit sleeve (22); the plug sleeve (19) is arranged at a corresponding position on the refrigerator (1); the plug rod (17) can be movably installed in the limit sleeve (22); the limit sleeve (22) can be detachably installed in the plug sleeve (19); the guide block (18) is arranged at the bottom end of the plug rod (17); the clamping block (21) is arranged on the outside of the guide block (18); one end of the clamping block (21) is clamped with the clamping groove (20); and the clamping groove (20) is provided on the inside of the plug sleeve (19).

4. The liquid helium-free cryogenic refrigerator device according to claim 3, characterized in that: A handle (23) is provided on one side of the plug-in rod (17), and the handle (23) is fixedly mounted on the top of the plug-in rod (17).

5. The liquid helium-free cryogenic refrigerator device according to claim 4, characterized in that: A slide rail (24) is arranged on the outer side of the limiting sleeve (22), a slide groove (25) is arranged on the inner side of the plug sleeve (19), and the slide rail (24) is matched with the slide groove (25).

6. The liquid helium-free cryogenic refrigerator device according to claim 5, characterized in that: A fixing plate (26) is provided on the outside of the plug-in rod (17), and the fixing plate (26) is installed on the top end of the limiting sleeve (22).

7. The liquid helium-free cryogenic refrigerator device according to claim 6, characterized in that: A push spring (27) is arranged in the clamping groove (20), and the push spring (27) is in contact with one side of the clamping block (21).

8. The liquid helium-free cryogenic refrigerator device according to claim 7, characterized in that: A spring (28) is provided on the outside of the plug-in rod (17), and the spring (28) is movably installed in the limiting sleeve (22).

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