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CN-122014905-A - Air separation low-temperature liquid flow guiding device

CN122014905ACN 122014905 ACN122014905 ACN 122014905ACN-122014905-A

Abstract

The invention discloses an air separation low-temperature liquid flow guiding device which comprises a valve body, wherein two ends of the valve body are respectively provided with a flow guiding pipe, the valve body is in sealing connection with the flow guiding pipes through a flange structure, a first channel for low-temperature liquid to circulate is formed in the valve body, a flow adjusting component is arranged on the valve body and used for adjusting and controlling the circulation state of the low-temperature liquid in the first channel, a second channel adjacent to the first channel is formed in the valve body, a pipeline joint at the opening of the second channel is connected with warm water to serve as a defrosting medium, and a rotary adjusting knob can drive a second threaded rod to axially move in a second internal threaded block to push a second piston to move in the second channel, so that the on-off of the defrosting channel and the adjustment of the flow velocity of the warm water are realized, the high-efficiency defrosting of the valve body is realized, and the long-term stable operation of the device under the low-temperature flow guiding working condition is ensured.

Inventors

  • JI JINBIAO
  • LI SHOUQIANG
  • WU GUANGWU
  • SUN JINTAO
  • ZHANG LIJING

Assignees

  • 江苏湛为工程技术有限公司

Dates

Publication Date
20260512
Application Date
20260316

Claims (10)

  1. 1. The utility model provides a space division low temperature liquid guiding device which characterized in that includes valve body (101): The two ends of the valve body (101) are respectively provided with a flow guide pipe (104), the valve body (101) is in sealing connection with the flow guide pipes (104) through a flange structure, a first channel (111) for low-temperature liquid to circulate is formed in the valve body (101), a flow regulating assembly is arranged on the valve body (101), and the flow regulating assembly is used for regulating and controlling the circulation state of the low-temperature liquid in the first channel (111); The inside of valve body (101) has still been seted up second passageway (112) adjacent with first passageway (111), second passageway (112) are used for letting in defrosting medium, valve body (101) are last to be installed with the break-make adjustment subassembly of second passageway (112) adaptation, break-make adjustment subassembly is used for regulating and control the break-make of second passageway (112) and defrosting medium's circulation state, heat conduction subassembly is installed to the inner wall of first passageway (111).
  2. 2. The device of claim 1, wherein the heat conducting component comprises a spiral heat conducting plate (119), a spiral groove (118) is formed in the inner wall of the first channel (111), the spiral heat conducting plate (119) is embedded and installed on the inner wall of the spiral groove (118), one end of the spiral heat conducting plate (119) penetrates through the second channel (112) and is fixedly connected with a limiting heat conducting plate (120), and the outer wall of the limiting heat conducting plate (120) is fixedly connected with the inner wall of the second channel (112).
  3. 3. The device of claim 1, wherein the on-off adjusting assembly comprises a second internal thread block (114) fixedly installed on the outer side of the valve body (101), a second threaded rod (115) is connected to the second internal thread block (114) in an internal thread mode, one end of the second threaded rod (115) extends to the outer side of the valve body (101) and is provided with an adjusting knob (116), and the other end of the second threaded rod extends into the second channel (112) and is fixedly connected with a second piston (117).
  4. 4. The device of claim 1, wherein the flange structure comprises a first flange plate (102) fixedly installed at two ends of the valve body (101) and a second flange plate (105) fixedly installed at the end of the flow guiding pipe (104), and the first flange plate (102) is attached to the second flange plate (105) and fixedly connected with the second flange plate through bolts.
  5. 5. The device for guiding the air separation low-temperature liquid of claim 4, wherein the edge of the first flange plate (102) is provided with a first fixing hole (103), the edge of the second flange plate (105) is provided with a second fixing hole (106) matched with the first fixing hole (103), and bolts penetrate through the first fixing hole (103) and the second fixing hole (106) to fix the first fixing hole and the second fixing hole.
  6. 6. The device of claim 1, wherein the flow regulating assembly comprises a first internal thread block (107) fixedly installed on the radial outer side of the valve body (101), a first threaded rod (108) is connected to the first internal thread block (107) in an internal thread manner, one end of the first threaded rod (108) extends to the outer side of the valve body (101) and is provided with a rotating disc (109), and the other end of the first threaded rod extends into the first channel (111) and is fixedly connected with a first piston (110).
  7. 7. The device of claim 6, wherein the first passage (111) is a straight-through passage penetrating through the valve body (101), openings at two ends of the first passage are respectively connected to the middle parts of first flanges (102) at two ends of the valve body (101), and the cross section of the first piston (110) is matched with the flow cross section of the first passage (111).
  8. 8. The device for guiding the air separation cryogenic liquid of claim 1, wherein openings at two ends of the second channel (112) are all communicated to the radial outer side of the valve body (101), pipeline joints (113) for connecting an external medium conveying pipeline are fixedly arranged at the openings, and the on-off adjusting component is positioned at the outer side of the valve body (101) and between the two pipeline joints (113).
  9. 9. A device for guiding a cryogenic liquid in space according to claim 3, characterized in that the cross section of the second piston (117) is adapted to the flow cross section of the second channel (112), the second channel (112) being arranged parallel to the first channel (111).
  10. 10. The device for guiding the air-separation cryogenic liquid of claim 2, wherein the spiral heat-conducting plate (119) and the limiting heat-conducting plate (120) are made of copper.

Description

Air separation low-temperature liquid flow guiding device Technical Field The invention relates to the technical field of low-temperature liquid conveying, in particular to a space division low-temperature liquid flow guiding device. Background In the low-temperature liquid conveying system of the air separation equipment, the flow guiding device is used as a core component for the accurate circulation of low-temperature liquid, is widely applied to the industrial fields of industrial gas preparation, low-temperature energy storage, metallurgical chemical industry and the like, and the flow guiding stability, flow regulation precision and low-temperature working condition suitability of the flow guiding device directly determine the overall operation efficiency and safety of the air separation system. However, the air separation low-temperature liquid guiding device adopts a single guiding channel structure, so that only basic low-temperature liquid guiding and simple flow regulating functions can be realized, in actual low-temperature working condition operation, the phenomenon of frosting and ice hanging easily occurs on the valve body and the inner wall of the guiding channel due to continuous flowing of low-temperature liquid through the channel, and the frost layer is continuously thickened along with the operation time. The traditional air separation low-temperature liquid flow guiding device generally lacks a targeted defrosting structure, when low-temperature liquid is continuously guided, frost is easily generated on the surface of a valve body and is adhered for a long time, the flow guiding performance of the device can be gradually influenced, even the sealing performance of a component connecting part is possibly reduced due to accumulation of the frost, part of the simple device adopts an external heating part for defrosting, the heat transfer efficiency is low, the problem of uneven local heating is easily caused, the sealing performance and the connecting strength can be influenced, the dielectric loss is caused, and potential safety hazards exist, so that the air separation low-temperature liquid flow guiding device with flow regulation and high-efficiency defrosting stability is urgently researched and developed. Disclosure of Invention The invention aims to provide a space division low-temperature liquid flow guiding device so as to solve the problems in the background technology. In order to achieve the purpose, the invention provides the following technical scheme that the air separation low-temperature liquid flow guiding device comprises a valve body: the two ends of the valve body are respectively provided with a flow guide pipe, the valve body is in sealing connection with the flow guide pipes through a flange structure, a first channel for low-temperature liquid to circulate is formed in the valve body, a flow regulating assembly is arranged on the valve body, and the flow regulating assembly is used for regulating and controlling the circulation state of the low-temperature liquid in the first channel; the inside of valve body has still been offered with the adjacent second passageway of first passageway, the second passageway is used for letting in defrosting medium, install on the valve body with the break-make adjustment subassembly of second passageway adaptation, break-make adjustment subassembly is used for regulating and control the break-make of second passageway and defrosting medium's circulation state, heat conduction subassembly is installed to the inner wall of first passageway. Preferably, the heat conduction assembly comprises a spiral heat conduction plate, a spiral groove is formed in the inner wall of the first channel, the spiral heat conduction plate is embedded and installed in the inner wall of the spiral groove, one end of the spiral heat conduction plate penetrates through the second channel and is fixedly connected with a limiting heat conduction plate, and the outer wall of the limiting heat conduction plate is fixedly connected with the inner wall of the second channel. Preferably, the on-off adjusting assembly comprises a second internal thread block fixedly arranged on the outer side of the valve body, a second threaded rod is connected with the second internal thread block in an internal thread mode, one end of the second threaded rod extends to the outer side of the valve body and is provided with an adjusting knob, and the other end of the second threaded rod extends into the second channel and is fixedly connected with a second piston. Preferably, the flange structure comprises a first flange plate fixedly mounted at two ends of the valve body and a second flange plate fixedly mounted at the end part of the flow guide pipe, wherein the first flange plate is attached to the second flange plate and fixedly connected with the second flange plate through bolts. Preferably, the edge of the first flange plate is provided with a first fixing hole, the edg