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CN-224229257-U - CO2 refrigeration reducing valve and CO2 refrigerating system

CN224229257UCN 224229257 UCN224229257 UCN 224229257UCN-224229257-U

Abstract

The utility model discloses a CO2 refrigeration pressure reducing valve and a CO2 refrigeration system, which belong to the technical field of pressure reducing valves and comprise a pressure reducing pipe and a baffle plate which is arranged in the pressure reducing pipe and used for blocking partial CO2 gas from flowing, a through hole which is arranged in the baffle plate and used for allowing CO2 gas to flow, and a sealing structure which is arranged in the pressure reducing pipe and used for sealing the through hole. According to the utility model, the through CO gas can be decompressed through the baffle plate arranged in the decompression pipe, the opening degree of the through hole can be adjusted by the motor, so that the decompression degree of the gas can be adjusted, and the worm wheel is matched with the threads of the movable loop bar to operate the switch of the through hole, so that the accurate transmission ratio can be realized, the moving position of the umbrella-shaped rubber plug can be accurately controlled, the pressure at the low pressure side can be checked by matching with the pressure gauge, the pressure of the gas circulation can be accurately adjusted, the pressure of the gas after passing is ensured to be constant, and the decompression effect of the gas is improved.

Inventors

  • CHU CHENGZAN
  • WEN XIANTAI
  • YAN AN
  • XIA SHUHAO

Assignees

  • 匡能(苏州)装备有限公司

Dates

Publication Date
20260512
Application Date
20250409

Claims (9)

  1. 1. A CO2 refrigeration pressure reducing valve, comprising: a pressure reducing tube (1); a baffle plate (2) arranged inside the decompression tube (1) for blocking part of CO2 gas circulation; The through hole (3) is formed in the baffle (2) and is used for enabling CO2 gas to circulate; the sealing structure is arranged inside the pressure reducing pipe (1) and is used for sealing the through hole (3); The adjusting structure is arranged on the sealing structure and used for controlling the sealing structure to move to open and close; and the extrusion structure is arranged on the sealing structure and is used for extruding the sealing structure and keeping the sealing effect.
  2. 2. The CO2 refrigerant pressure reducing valve as set forth in claim 1, wherein said sealing structure comprises: A connecting seat (4) arranged on the outer surface of the pressure reducing pipe (1); the movable sleeve rod (401) is slidably arranged in the connecting seat (4) and the decompression tube (1); the baffle ring (402) is fixedly sleeved on the movable sleeve rod (401); An umbrella-shaped rubber plug (403) is movably sleeved on the movable sleeve rod (401), and the umbrella-shaped rubber plug (403) is positioned at one side of the baffle ring (402); Wherein, umbrella-shaped rubber stopper (403) is contacted with the inner wall of through-hole (3) for shutoff through-hole (3).
  3. 3. The CO2 refrigerant pressure reducing valve as set forth in claim 1, wherein said regulating structure includes: an L-shaped bracket (5) arranged at one side of the connecting seat (4); the worm wheel (501) is rotatably arranged on the connecting seat (4) and the L-shaped bracket (5); a screw hole (502) which is formed in the worm wheel (501); The worm wheel (501) is sleeved on the movable sleeve rod (401) through a threaded hole (502) in a threaded mode, and threads matched with the threaded hole (502) are formed in the surface of the movable sleeve rod (401); A driving assembly arranged on the worm wheel (501) for driving the worm wheel (501) to rotate; And the limiting assembly is arranged on the worm wheel (501) and is used for limiting the position of the worm wheel (501) when rotating.
  4. 4. A CO2 refrigeration and pressure relief valve as claimed in claim 3 wherein said drive assembly comprises: A support (503) arranged on the connecting seat (4); A rotating shaft (504) rotatably installed inside the supporting frame (503); the worm (505) is fixedly sleeved on the rotating shaft (504), and the worm (505) is meshed with the worm wheel (501); And the motor (506) is arranged on one side of the supporting frame (503), and the output end of the motor (506) is arranged at one end of the rotating shaft (504) and is used for driving the rotating shaft (504) to rotate.
  5. 5. A CO2 refrigerating and pressure reducing valve as claimed in claim 3, characterized in that the limit assembly comprises two limit rings (507), the two limit rings (507) are respectively arranged on one side of the connecting seat (4) and one side of the L-shaped bracket (5), and the two limit rings (507) are both rotatably arranged in the worm wheel (501).
  6. 6. A CO2 refrigeration and pressure relief valve according to claim 1 wherein said adjustment structure further comprises a guide assembly disposed on the movable lever (401) for limiting the direction of movement of the movable lever (401).
  7. 7. The CO2 refrigerant pressure relief valve as set forth in claim 6, wherein said pilot assembly comprises: a guide frame (508) fixedly sleeved on the movable sleeve rod (401); A guide hole (509) provided in the guide frame (508); The guide rod (510) is arranged on one side of the L-shaped bracket (5), and the guide rod (510) is slidably arranged in the guide hole (509).
  8. 8. The CO2 refrigerant pressure reducing valve as set forth in claim 1, wherein said squeeze structure comprises: an adjusting screw (6); The spiral cap (601) and the pressing plate (602) are respectively arranged at two ends of the adjusting screw rod (6), and the pressing plate (602) is contacted with the umbrella-shaped rubber plug (403); The screw hole (603) is formed in the movable sleeve rod (401), and the adjusting screw rod (6) is installed in the screw hole (603) in a threaded mode.
  9. 9. A CO2 refrigeration system comprising the CO2 refrigeration pressure-reducing valve of any one of claims 1-8.

Description

CO2 refrigeration reducing valve and CO2 refrigerating system Technical Field The utility model relates to the technical field of pressure reducing valves, in particular to a CO2 refrigeration pressure reducing valve and a CO2 refrigeration system. Background The CO2 refrigerant pressure reducing valve is a key component in a refrigeration system, and its main function is to reduce the pressure of the refrigerant on the high pressure side and stabilize it within the pressure range required on the low pressure side. This depressurization process is critical to the efficiency and stability of the refrigeration system. Chinese patent publication No. CN218207995U discloses an external CO2 refrigeration relief pressure valve, including decompression pipe, regulating box and barometer, decompression pipe top welding has the regulating box, the barometer is installed to the regulating box top, decompression pipe internally mounted has the decompression subassembly, the decompression subassembly top lets in the regulating box, install the pressure regulating subassembly in the regulating box, pressure regulating subassembly one end is connected with decompression subassembly top meshing. The utility model has the advantages of automatically adjusting the inside according to the air pressure in the pipe, simultaneously adjusting the air pressure in the pipe according to the requirement, avoiding frostbite and improving the safety without manual operation. Among the above-mentioned disclosed prior art, through the rotation of control relief pressure subassembly, can adjust the decompression degree of gas, but this relief pressure subassembly is connected through the spring, is in active state all the time, when CO2 gas circulates, produces the interact with gaseous medium easily, probably leads to gas pressure to produce undulant to influence the pressure regulation precision of relief pressure valve, be convenient for carry out accurate regulation to the pressure after the gas passes through. Disclosure of utility model In view of the above-mentioned shortcomings, the present utility model aims to provide a CO2 refrigeration pressure reducing valve and a CO2 refrigeration system, so as to solve some or all of the problems in the background art. In order to solve the technical problems, the utility model adopts the following technical scheme: a CO2 refrigeration pressure relief valve comprising: A pressure reducing tube; a baffle plate arranged inside the pressure reducing pipe for blocking part of CO2 gas circulation; the through hole is formed in the baffle and is used for allowing CO2 gas to circulate; The sealing structure is arranged in the decompression tube and used for sealing the through hole; The adjusting structure is arranged on the sealing structure and used for controlling the sealing structure to move to open and close; and the extrusion structure is arranged on the sealing structure and is used for extruding the sealing structure and keeping the sealing effect. Preferably, the sealing structure comprises: the connecting seat is arranged on the outer surface of the pressure reducing pipe; the movable sleeve rod is slidably arranged in the connecting seat and the decompression tube; The baffle ring is fixedly sleeved on the movable loop bar; The umbrella-shaped rubber plug is movably sleeved on the movable sleeve rod, and is positioned on one side of the baffle ring; the umbrella-shaped rubber plug is in contact with the inner wall of the through hole and is used for sealing the through hole. Preferably, the adjusting structure comprises: the L-shaped bracket is arranged on one side of the connecting seat; The worm wheel is rotatably arranged on the connecting seat and the L-shaped bracket; the threaded hole is formed in the worm wheel; the worm wheel is sleeved on the movable loop bar through a threaded hole, and threads matched with the threaded hole are formed on the surface of the movable loop bar; The driving assembly is arranged on the worm wheel and used for driving the worm wheel to rotate; And the limiting assembly is arranged on the worm wheel and used for limiting the position of the worm wheel when the worm wheel rotates. Preferably, the driving assembly includes: The support frame is arranged on the connecting seat; The rotating shaft is rotatably arranged in the support frame; The worm is fixedly sleeved on the rotating shaft and meshed with the worm wheel; The motor is arranged on one side of the supporting frame, and the output end of the motor is arranged at one end of the rotating shaft and used for driving the rotating shaft to rotate. Preferably, the limiting assembly comprises two limiting rings which are respectively arranged on one side of the connecting seat and one side of the L-shaped bracket, and the two limiting rings are rotatably arranged in the worm wheel. Preferably, the adjusting structure further comprises a guide assembly disposed on the movable loop bar for limiting a