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CN-224230413-U - Refrigerant pipeline stress strain monitoring system, air conditioning equipment and refrigeration equipment

CN224230413UCN 224230413 UCN224230413 UCN 224230413UCN-224230413-U

Abstract

The application relates to a refrigerant pipeline stress-strain monitoring system, air conditioning equipment and refrigeration equipment, wherein the refrigerant pipeline stress-strain monitoring system comprises a fiber bragg grating monitoring assembly and a refrigerant pipeline, and the fiber bragg grating monitoring assembly comprises a strain monitoring assembly and a temperature monitoring assembly which are adjacently arranged; the strain monitoring component and the temperature monitoring component are both contacted with the outer wall of the refrigerant pipeline. The stress and strain monitoring system for the refrigerant pipeline solves the problem of cross sensitivity of strain and temperature in the fiber bragg grating sensor through the strain monitoring component and the temperature monitoring component which are adjacently arranged, and improves the accuracy and reliability of measurement through a temperature compensation or decoupling technology, so that the actual stress and strain value of the refrigerant pipeline is obtained. Because the optical fiber grating monitoring component is of an optical system structure at the monitoring position close to the refrigerant pipeline, electric sparks and potential safety hazards such as explosion are avoided.

Inventors

  • XIE SONG
  • LIU LEI
  • CHEN BIKUI
  • LI JIAHONG

Assignees

  • 珠海格力电器股份有限公司

Dates

Publication Date
20260512
Application Date
20250425

Claims (12)

  1. 1. A refrigerant line stress strain monitoring system, comprising: The optical fiber grating monitoring assembly comprises a strain monitoring assembly (1) and a temperature monitoring assembly (2) which are adjacently arranged; the cooling medium pipeline (3), strain monitoring assembly (1) with temperature monitoring assembly (2) all contact set up in the outer wall of cooling medium pipeline (3).
  2. 2. The refrigerant pipeline stress-strain monitoring system according to claim 1, wherein the strain monitoring assembly (1) comprises a first optical fiber (11) and a first grid region (12), the first grid region (12) is arranged on the first optical fiber (11), and the extending direction of the first optical fiber (11) is parallel or is arranged at an angle with the axial direction of the refrigerant pipeline (3).
  3. 3. The refrigerant line stress-strain monitoring system according to claim 2, characterized in that the first optical fiber (11) is wound around the outer wall of the refrigerant line (3).
  4. 4. The refrigerant line stress-strain monitoring system as recited in claim 2, wherein a plurality of said first gate regions (12) are provided along the extension direction of said first optical fiber (11).
  5. 5. The refrigerant pipeline stress-strain monitoring system according to any one of claims 1 to 4, wherein the temperature monitoring assembly (2) comprises a second optical fiber (21), a second grid region (22) and a capillary tube (23), the second grid region (22) is arranged on the second optical fiber (21), the capillary tube (23) is sleeved outside the second grid region (22), and a preset gap exists between the second grid region (22) and the inner wall of the capillary tube (23).
  6. 6. The refrigerant line stress-strain monitoring system as recited in claim 5, wherein the axis of said second gate region (22) coincides with the axis of said capillary tube (23).
  7. 7. The refrigerant line stress-strain monitoring system as recited in claim 5, wherein the diameter of the capillary tube (23) is 5-20 times the diameter of the second optical fiber (21).
  8. 8. The refrigerant pipeline stress-strain monitoring system according to claim 5, wherein a plurality of second grid regions (22) and a plurality of capillaries (23) are arranged along the extending direction of the second optical fiber (21), and the plurality of second grid regions (22) and the plurality of capillaries (23) are arranged in a one-to-one correspondence.
  9. 9. The refrigerant pipeline stress-strain monitoring system according to any one of claims 1 to 4, further comprising an optical fiber regulating device (4) and a controller (5), wherein the optical fiber regulating device (4) is respectively connected with the optical fiber grating monitoring assembly and the controller (5) in a signal manner, so as to realize the stress-strain regulation of the refrigerant pipeline (3) through the controller (5).
  10. 10. The refrigerant line stress-strain monitoring system of claim 9, wherein the number of fiber grating monitoring components is a plurality.
  11. 11. An air conditioning apparatus comprising a refrigerant line stress strain monitoring system as claimed in any one of claims 1 to 10.
  12. 12. A refrigeration device comprising a refrigerant line stress-strain monitoring system as claimed in any one of claims 1 to 10.

Description

Refrigerant pipeline stress strain monitoring system, air conditioning equipment and refrigeration equipment Technical Field The present application relates to the field of monitoring technologies, and in particular, to a refrigerant pipeline stress-strain monitoring system, an air conditioning apparatus, and a refrigeration apparatus. Background In the operation process of air conditioner, refrigerator and other equipment, the refrigerant is conveyed between the compressor and the heat exchanger (such as evaporator, condenser and the like) through the refrigerant pipeline, so as to form a refrigerant circulation loop. In the running process of the equipment, the refrigerant pipeline is easy to vibrate, and if the vibration amplitude or the vibration frequency is too large, the service life of the pipeline can be obviously reduced. Therefore, the stress strain condition of the refrigerant pipeline needs to be continuously monitored in the running process of the equipment, the running frequency of the compressor is adjusted in real time according to the stress strain state of the pipeline, the stress strain of the pipeline is reduced, the vibration of the pipeline is reduced, and the service life reduction caused by the early fatigue failure of the refrigerant pipeline is prevented. The traditional stress-strain measurement method is that strain gauges are arranged on the outer surfaces of all pipelines, so that the stress-strain condition of the air conditioner pipeline can be effectively monitored, but the following defects are also caused: The first strain gauge has poor performance of measuring stress and strain, low measurement precision and large error; Secondly, the strain gauge has slow response of measuring the change of stress and strain, so that inaccurate measurement is easy to cause early warning and untimely adjustment of the exceeding of the stress and strain, and equipment is damaged or broken; Thirdly, the strain gauge belongs to an electrical sensor, and in the working process, an electric spark can be generated in a circuit system, and if a refrigerant exists in a refrigerant pipeline, and if the flammable and explosive refrigerant is used, when the stress strain of the pipeline is measured through the strain gauge, once the refrigerant leaks in the pipeline, explosion can be initiated, and potential safety hazards exist. Disclosure of utility model The application provides a refrigerant pipeline stress strain monitoring system, air conditioning equipment and refrigeration equipment, and aims to solve the technical problems that in the prior art, when the stress strain of a refrigerant pipeline is monitored through a strain gauge, the monitoring effect is poor and potential safety hazards exist. In a first aspect, the present application provides a refrigerant line stress-strain monitoring system, comprising: The optical fiber grating monitoring assembly comprises a strain monitoring assembly and a temperature monitoring assembly which are adjacently arranged; the refrigerant pipeline, the strain monitoring assembly and the temperature monitoring assembly are all contacted with the outer wall of the refrigerant pipeline. Optionally, the strain monitoring component includes a first optical fiber and a first grating region, the first grating region is disposed on the first optical fiber, and an extending direction of the first optical fiber is parallel to or disposed at an angle with an axial direction of the refrigerant pipeline. Optionally, the first optical fiber is wound on an outer wall of the refrigerant pipeline. Optionally, a plurality of first gate regions are provided along the extending direction of the first optical fiber. Optionally, the temperature monitoring component includes a second optical fiber, a second gate region and a capillary tube, the second gate region is disposed on the second optical fiber, the capillary tube is sleeved outside the second gate region, and a preset gap exists between the second gate region and an inner wall of the capillary tube. Optionally, the axis of the second gate region coincides with the axis of the capillary. Alternatively, the diameter of the capillary is 5-20 times the diameter of the second optical fiber. Optionally, a plurality of second gate regions and a plurality of capillaries are arranged along the extending direction of the second optical fiber, and the plurality of second gate regions are arranged in one-to-one correspondence with the plurality of capillaries. Optionally, the refrigerant pipeline stress-strain monitoring system further comprises an optical fiber regulating device and a controller, wherein the optical fiber regulating device is respectively connected with the optical fiber grating monitoring component and the controller in a signal manner and is used for realizing stress-strain regulation of the refrigerant pipeline through the controller. Optionally, the number of fiber grating monitoring components is multiple