Small cryostat convenient to disassemble and assemble

Abstract

The utility model provides a small-sized cryostat convenient to disassemble and assemble. The small-sized cryostat comprises a headstock, an inner tube body and an outer tube body, the headstock is provided with a cavity arranged in the headstock, an upper through hole arranged at the top of the headstock and communicated with the cavity, an annular groove coaxially arranged on the periphery of the upper through hole, a lower opening arranged at the bottom of the headstock and communicated with the cavity, and a vacuumizing connector arranged on the side wall of the headstock and communicated with the cavity. The headstock is mounted at the top end of the outer tube body, and a lower opening of the headstock is butted and communicated with a port of the outer tube body; a limiting check ring is arranged at the top end of the inner pipe body and inserted into the outer pipe body through the upper through hole, the limiting check ring at the top of the inner pipe body is clamped into the annular groove, and the lower end of the inner pipe body is suspended. The device is convenient to disassemble, assemble and maintain, simple and compact in structure and small in size.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ultralow temperature engineering technology, and particularly relates to a small low-temperature thermostat convenient to disassemble and assemble. BACKGROUND

[0002] At present, in physical scientific research and medical examination, the measurement of physical properties and optical band testing under low temperature are increasingly becoming the research hotspots today. The low-temperature environment and vacuum environment are indispensable decisive conditions in the testing process. The low-temperature thermostat must be relied on to maintain the low-temperature environment, and the low-temperature thermostat can provide a long-time low-temperature environment for samples to perform various scientific and medical tests at low temperature.

[0003] However, the complex structure design of the low-temperature thermostat brings many inconveniences in disassembly and maintenance, which restricts the wider application of the low-temperature thermostat. UTILITY MODEL CONTENT

[0004] In order to solve the technical problems in the background art, the utility model provides a small low-temperature thermostat convenient to disassemble and assemble.

[0005] The utility model provides a small low-temperature thermostat convenient to disassemble and assemble, which comprises a head seat, an inner tube body and an outer tube body.

[0006] The head seat has a cavity arranged in the interior thereof, an upper through hole arranged at the top thereof and communicated with the cavity, an annular groove coaxially arranged at the outer periphery of the upper through hole, a lower opening arranged at the bottom thereof and communicated with the cavity, and a vacuum extraction interface arranged at the side wall thereof and communicated with the cavity.

[0007] The head seat is installed at the top end of the outer tube body, and the lower opening of the head seat is butted and communicated with the port of the outer tube body.

[0008] The top end of the inner tube body is provided with a limiting stop ring, the inner tube body is inserted into the outer tube body from the upper through hole, and the limiting stop ring at the top thereof is clamped into the annular groove, and the lower end thereof is suspended.

[0009] Preferably, a mounting flange is further included, which is connected with the head seat through a threaded fastener to press and fix the limiting stop ring between the lower end thereof and the head seat.

[0010] Preferably, a sealing ring I is arranged at the joint of the mounting flange and the head seat.

[0011] Preferably, the side wall of the head seat is further provided with an external interface communicated with the cavity thereof; the inner portion of the outer tube body is provided with a liquid inlet pipe, one end of the liquid inlet pipe is led out from the external interface, and the other end is provided with a socket interface with an opening facing upward; the bottom of the inner tube body is provided with a plug-in interface, and the plug-in interface is plugged with the socket interface.

[0012] Preferably, the side wall of the inner tube body is provided with a gas return port located in the chamber of the head base, and the gas return port is connected with a gas return pipe which is led out by the external interface and is detachable between the gas return port.

[0013] Preferably, the head base comprises an upper seat part and a lower seat part; the lower seat part has a lower groove, is fixed at the end of the outer tube body, and the notch of the lower groove faces upward; the upper seat part has an upper groove, is detachably mounted on the lower seat part, and the upper groove and the lower groove are mutually buckled to form the chamber.

[0014] Preferably, the upper seat part is provided with a second sealing ring at the joint surface with the lower seat part.

[0015] Preferably, the part of the inner tube body located inside the chamber is sleeved with a copper ring seat, the ring seat has an inlet, an outlet, and a flow channel connecting the inlet and the outlet, and the lower end of the ring seat is connected with a cold shield; the inlet of the ring seat is connected with the gas return port of the inner tube body and is in communication, and the outlet of the ring seat is connected with the gas return pipe; the cold shield is in a cylindrical structure to cover the inner tube body on the inner side.

[0016] In the utility model, the head base is arranged at the top of the outer tube body, the limiting stop ring is arranged at the top of the inner tube body, the chamber is arranged inside the head base, the upper through hole and the ring groove are arranged at the top of the head base, the upper tube body is inserted into the outer tube body through the upper through hole, and the inner tube body is in a suspended state inside the outer tube body through the cooperation of the limiting stop ring arranged at the top of the upper tube body and the ring groove arranged at the top of the head base, does not directly contact the outer tube body, and the inner tube body can be quickly taken out of the outer tube body, so that the disassembly and maintenance are facilitated, the structure is simple and compact, and the size is small. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 A structural schematic diagram of the small-sized low-temperature thermostat convenient to disassemble is provided in the utility model;

[0018] Fig. 2 A partial enlarged view of the small-sized low-temperature thermostat convenient to disassemble is provided in the utility model. PREFERRED EMBODIMENT

[0019] REFERENCE Figs. 1-2 The utility model provides a kind of small-sized low-temperature thermostat convenient to disassemble, including: head base 1, inner tube body 2, outer tube body 3 and installation flange 6.

[0020] The head base 1 has a chamber inside, the top of the head base 1 is provided with the upper through hole in communication with the chamber and the ring groove coaxially arranged at the outer periphery of the upper through hole, the bottom of the head base 1 is provided with the lower opening in communication with the chamber, and the side wall of the head base 1 is provided with the vacuum extraction interface 4 in communication with the chamber.

[0021] The head base 1 is mounted at the top end of the outer tube body 3, and the lower opening of the head base 1 is in communication with the port of the outer tube body 3. The top end of the inner tube body 2 is provided with a limiting stop ring 5, the inner tube body 2 is inserted into the outer tube body 3 through the upper through hole, and the limiting stop ring 5 at the top of the inner tube body 2 is clamped into the ring groove, and the lower end of the inner tube body 2 is suspended, so that the inner tube body 2 does not directly contact the outer tube body 3, and the inner tube body 2 can be directly pulled out from the top end of the outer tube body 3.

[0022] The mounting flange 6 is connected with the head base 1 by threaded fasteners to press and fix the limiting stop ring 5 between the lower end of the limiting stop ring 5 and the head base 1, and the sealing ring 1 7 is arranged at the joint of the mounting flange 6 and the head base 1. The mounting flange 6 is designed to press and fix the limiting stop ring 5 to ensure the sealing effect, and to provide a mounting platform for the sample, so that the sample is loaded into the inner tube body 2 through the flange arranged on the sample and the mounting flange 6.

[0023] In further embodiments, an external interface in communication with the cavity of the head base 1 is arranged on the side wall of the head base 1, a liquid inlet pipe 8 is arranged in the outer tube body 3, one end of the liquid inlet pipe 8 is led out from the external interface, and the other end is provided with a socket interface with an upward opening. The bottom of the inner tube body 2 is provided with a plug-in interface, and the plug-in interface is plugged with the socket interface. In operation, the refrigerant medium is transported to the inner tube body 2 through the liquid inlet pipe 8 at any time to ensure that the inside of the inner tube body 2 is always in a low-temperature state.

[0024] Further, in order to enable the gas evaporated in the inner tube body 2 to be discharged in time, a gas return port is arranged on the side wall of the inner tube body 2, the gas return port is located in the cavity of the head base 1, and a gas return pipe 9 is connected with the gas return port, the gas return pipe 9 is led out from the external interface and is detachable between the gas return port.

[0025] In addition, in order to facilitate the access and exit of the corresponding pipeline and line, the cavity of the head base 1 is designed to be openable in the embodiment, and the head base 1 includes an upper seat part 101 and a lower seat part 102, the lower seat part 102 has a lower groove, the lower seat part 102 is fixed at the end of the outer tube body 3, and the groove opening of the lower groove faces upward, the upper seat part 101 has an upper groove, the upper seat part 101 is detachably mounted on the lower seat part 102, the upper groove and the lower groove are buckled with each other to form the cavity, and the sealing ring 2 10 is arranged at the joint surface of the upper seat part 101 and the lower seat part 102.

[0026] In addition, the part of the inner tube body 2 located in the cavity is sleeved with a copper ring seat 11, the ring seat 11 has an inlet, an outlet, and a flow channel connecting the inlet and the outlet, the lower end of the ring seat 11 is connected with a cold shield 12, the inlet of the ring seat 11 is in communication with the gas return port of the inner tube body 2, and the outlet of the ring seat 11 is connected with the gas return pipe 9, and the cold shield 12 is a cylindrical structure to cover the inner tube body 2 on the inner side.

[0027] From above, the utility model discloses a headstock 1 is set up at the top of outer pipe body 3, and the limiting baffle 5 is set up at the top of inner pipe body 2, and the chamber is set up inside headstock 1, and the upper through -hole and the ring groove are set up at the top of headstock 1, and the upper pipe body is inserted into outer pipe body 3 through the upper through -hole, and the inner pipe body 2 is in the state of suspension inside outer pipe body 3 through the cooperation of the limiting baffle 5 set up at its top and the ring groove set up at the top of headstock 1, does not directly contact with outer pipe body 3, and the inner pipe body 2 can be quickly taken out from outer pipe body 3, to facilitate the dismounting and maintenance of the convenient, and simple and compact structure, small size. Simultaneously, the vacuumizing interface 4 is set below the joint of limiting baffle 5 and headstock 1, to utilize vacuumizing to make the joint surface of limiting baffle 5 and headstock 1 more firmly, reduce the risk of leakage, improve the overall sealing performance.

[0028] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A small-sized low-temperature thermostat which is easy to disassemble and assemble, characterized by comprising: The utility model relates to a headstock (1), an inner tube body (2) and an outer tube body (3). The headstock (1) has a cavity arranged in the interior thereof, an upper through hole arranged at the top thereof and communicated with the cavity, a ring groove coaxially arranged at the outer periphery of the upper through hole, a lower opening arranged at the bottom thereof and communicated with the cavity, and a vacuum extraction interface (4) arranged at the side wall thereof and communicated with the cavity. The headstock (1) is installed at the top end of the outer tube body (3), and the lower opening of the headstock (1) is butted and communicated with the port of the outer tube body (3). The top end of the inner tube body (2) is provided with a limiting stop ring (5), the inner tube body (2) is inserted into the outer tube body (3) through the upper through hole, and the limiting stop ring (5) at the top thereof is clamped into the ring groove, and the lower end thereof is suspended. The mounting flange (6) is connected with the headstock (1) through threaded fasteners to press and fix the limiting stop ring (5) between the lower end thereof and the headstock (1).

2. The compact cryostat convenient to disassemble according to claim 1, characterized by, The mounting flange (6) is provided with a sealing ring I (7) at the joint thereof with the headstock (1).

3. The small-sized low temperature thermostat which is easily assembled and disassembled according to claim 2, wherein The side wall of the headstock (1) is further provided with an external interface communicated with the cavity thereof; the interior of the outer tube body (3) is provided with a liquid inlet pipe (8), one end of the liquid inlet pipe (8) is led out through the external interface, and the other end is provided with a socket interface with an opening upward; the bottom of the inner tube body (2) is provided with a plug-in interface, and the plug-in interface is plugged with the socket interface.

4. The compact cryostat convenient to disassemble according to claim 1, wherein, The side wall of the inner tube body (2) is provided with a gas return port located in the cavity of the headstock (1), and the gas return port is connected with a gas return pipe (9) which is led out through the external interface and is detachable between the gas return port.

5. The compact cryostat convenient to disassemble according to claim 1, wherein, The part of the inner tube body (2) located in the cavity is sleeved with a copper ring seat (11), the ring seat (11) has an inlet, an outlet and a flow channel connecting the inlet and the outlet, and the lower end of the ring seat (11) is connected with a cold shield (12); the inlet of the ring seat (11) is butted and communicated with the gas return port of the inner tube body (2), and the outlet thereof is connected with the gas return pipe (9); the cold shield (12) is a cylindrical structure to cover the inner tube body (2) on the inner side thereof.

6. The small-sized low temperature thermostat easy to disassemble according to claim 5, wherein The headstock (1) comprises an upper seat portion (101) and a lower seat portion (102); the lower seat portion (102) has a lower groove, the lower seat portion (102) is fixed at the end of the outer tube body (3), and the groove opening of the lower groove faces upward; the upper seat portion (101) has an upper groove, the upper seat portion (101) is detachably installed on the lower seat portion (102), and the upper groove and the lower groove are mutually buckled to form a cavity.

7. The small-sized low temperature thermostat easy to disassemble according to any one of claims 1 to 6, characterized by, The joint surface of the upper seat portion (101) and the lower seat portion (102) is provided with a sealing ring II (10).

8. The small-sized low temperature thermostat easy to disassemble according to claim 7, wherein ​

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