CN211148027U - Pipeline stress detection tool and air conditioner pipeline stress detection system - Google Patents
Pipeline stress detection tool and air conditioner pipeline stress detection system Download PDFInfo
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- CN211148027U CN211148027U CN202020167888.9U CN202020167888U CN211148027U CN 211148027 U CN211148027 U CN 211148027U CN 202020167888 U CN202020167888 U CN 202020167888U CN 211148027 U CN211148027 U CN 211148027U
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Abstract
The utility model provides a pipeline stress detects frock and air conditioner pipeline stress detecting system relates to air conditioner technical field. The air conditioner pipeline stress detection system comprises stress test equipment, an air conditioner and a pipeline stress detection tool, wherein the air conditioner comprises a first reactor and a controller which are electrically connected, the pipeline stress detection tool comprises a shielding box and at least one second reactor which is installed in the shielding box, and the second reactor is connected with the shielding box in an insulating mode. When the pipeline stress of the air conditioner external unit is detected, the stress strain gauge on the pipeline of the air conditioner external unit is electrically connected with the stress test equipment, and the second reactor can replace the first reactor to be electrically connected with the controller, so that the first reactor can be closed, and the electromagnetic field generated by the first reactor is prevented from influencing the detection result. The pipeline stress detection tool is reasonable in design, can assist pipeline stress detection of an air conditioner external unit, improves the phenomenon that stress detection errors are large under different working conditions, and improves detection accuracy.
Description
Technical Field
The utility model relates to an air conditioner technical field particularly, relates to a pipeline stress detects frock and air conditioner pipeline stress detecting system.
Background
The reliability (such as fracture, fatigue life and the like) of the air conditioner pipeline is directly related to whether the air conditioner can be normally used, and the core evaluation index of the reliability of the air conditioner pipeline is to detect the pipeline stress of the air conditioner pipeline under various working conditions.
However, the traditional air conditioner pipeline has large stress detection error under various working conditions, so that the reliability of the pipeline is not accurately detected.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem improve the great phenomenon of air conditioner pipeline stress detection error under each operating mode.
In order to solve the above problems, an embodiment of the application provides a pipeline stress detection tool and an air conditioner pipeline stress detection system.
In a first aspect, an embodiment provides a pipeline stress detection tool, which is used for assisting in detecting pipeline stress of an air conditioner outdoor unit, wherein the air conditioner outdoor unit is provided with a first reactor and a controller which are electrically connected, and the first reactor and the controller comprise a shielding box and at least one second reactor which is installed in the shielding box, and the second reactor is in insulation connection with the shielding box;
when pipeline stress of the air conditioner outdoor unit is detected, the second reactor can replace the first reactor to be electrically connected with the controller, so that the first reactor can be closed, and the electromagnetic field generated by the first reactor is prevented from influencing a detection result.
In this embodiment, the pipeline stress of the air conditioner external unit is detected through the pipeline stress detection tool in an auxiliary manner. Namely, a second reactor in the pipeline stress detection tool replaces a first reactor in an air conditioner external unit, and when the stress of the air conditioner pipeline is detected, the second reactor is electrically connected with the controller, so that the first reactor in the air conditioner external unit is closed, and the first reactor is prevented from generating an electromagnetic field to further influence a detection result. So that the pipeline stress detection of the air conditioner outdoor unit is carried out in a state without electromagnetic interference, and the detection accuracy is improved.
In an optional embodiment, the shielding box includes a plurality of shielding units, the second reactors are installed in the shielding units in a one-to-one correspondence, and a socket electrically connected with the corresponding second reactor is provided on a side wall of each shielding unit.
In this embodiment, a plurality of shielding units are provided in the shielding box, so that the number of the second reactors to be provided can be plural, and there is no mutual interference between the plurality of second reactors. The detection tool with the second reactors is used for assisting in detection of different air conditioners, the first reactors and the second reactors in the same specification are only required to be electrically connected in a one-to-one correspondence mode, operation is convenient and rapid, operation efficiency can be greatly improved, and detection time is saved.
In an alternative embodiment, an insulating pad is arranged on the inner side of the bottom wall of the shielding box, and the second reactor is fixedly arranged on the insulating pad.
In this embodiment, the insulating pad is arranged between the shielding box and the second reactor, so that the second reactor is arranged in an insulating manner, external interference is reduced, and the stress detection accuracy is improved.
In an alternative embodiment, a positioning boss is arranged on one side of the insulating pad, which is away from the bottom wall of the shielding box;
the second reactor comprises a base mounting plate, the base mounting plate is provided with mounting holes matched with the positioning bosses, and the base mounting plate is sleeved with the positioning bosses and the insulating pad which are fixedly connected.
In this embodiment, through set up the location boss on the insulating pad, set up the base mounting panel at the second reactor, and base mounting panel and location boss cooperation installation to realize second reactor and shielding case simple to operate, the firm purpose of structure.
In an optional embodiment, a clamping portion is further arranged on one side, away from the bottom wall of the shielding box, of the insulating pad, the clamping portion is provided with a positioning clamping groove, and the clamping portion and the positioning boss are arranged at intervals;
the base mounting panel still establishes the portion including the card, the card is established the portion card and is located positioning groove, the mounting hole with the location boss cooperatees.
In this embodiment, on the basis of location boss, add positioning slot's structure to realize the mounting means of base mounting panel and positioning slot joint, further improve the installation effectiveness, save installation time.
In an optional embodiment, the side wall of the shielding box is provided with heat dissipation holes.
In this embodiment, through set up the louvre on the shielding case for to the second reactor real-time heat dissipation in the shielding case, be favorable to the second reactor to normally work, improve life.
In an alternative embodiment, the shielding box is further connected with a ground wire.
In this embodiment, through set up the earth connection on the shielded cell to when using this pipeline stress to detect frock and carry out the auxiliary detection, can realize reliable ground connection, the purpose of safe operation.
In an optional implementation manner, the pipeline stress detection tool further comprises a support, and the shielding box is fixedly connected to the top of the support.
In an alternative embodiment, the shielding box is made of a copper plate, a brass plate, a stainless steel plate or a galvanized plate.
In a second aspect, an embodiment provides an air conditioner pipeline stress detection system, which includes a stress test device, an air conditioner and the pipeline stress detection tool in any one of the foregoing embodiments, where the air conditioner includes a controller and an air conditioner external unit having a first reactor;
the second reactor replaces the first reactor to be electrically connected with the controller, the specifications of the second reactor and the first reactor are the same, a stress strain gauge is arranged on a tubing of the air conditioner external unit, and the stress strain gauge is electrically connected with the stress test equipment through a flat cable.
In this embodiment, the air conditioner pipeline stress detection system replaces the first reactor in the air conditioner external unit with the aid of the pipeline stress detection tool, and can better avoid electromagnetic interference generated by the first reactor, so that a pipeline stress detection result is improved.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioner pipeline stress detection system according to an embodiment of the present disclosure;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
fig. 3 is a schematic structural diagram of a pipeline stress detection tool provided in an embodiment of the present application;
FIG. 4 is a partial structural sectional view of a pipeline stress detection tool provided in an embodiment of the present application;
fig. 5 is an enlarged schematic view of B in fig. 4.
Description of reference numerals:
icon: 100-air conditioner pipeline stress detection system; 10-an air conditioner; 11-a first reactor; 12-a piping; 13-a stress strain gauge; 14-flat cable; 20-pipeline stress detection tooling; 21-a scaffold; 22-a shielding box; 225-heat dissipation holes; 23-a shielding unit; 235-a socket; 24-a ground line; 25-an insulating pad; 251-positioning a boss; 252-a snap-in part; 26-a second reactor; 27-a base mounting plate; 272-a snap-fit portion; 276-a reactor plug; 28-connecting lines; 285-connecting wire plug.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
The embodiment of the application provides an air conditioner pipeline stress detection system for the pipeline of the outer machine of air conditioner after the installation is accomplished carries out stress detection.
Fig. 1 is a schematic structural diagram of an air conditioner pipeline stress detection system according to an embodiment of the present application, and fig. 2 is an enlarged schematic diagram of a point a in fig. 1, as shown in fig. 1 and fig. 2.
The air conditioner pipeline stress detection system 100 includes a stress test device (not shown), an air conditioner 10 and a pipeline stress detection tool 20.
The pipeline stress detection tool 20 comprises a reactor, and the reactor in the pipeline stress detection tool 20 replaces the reactor in an air conditioner external unit and is electrically connected with an air conditioner controller. For clarity and convenience of description, in the present embodiment, the reactor in the air conditioner external unit is the first reactor 11, and the reactor in the pipeline stress detection tool 20 is the second reactor 26.
Because the normal work of the air conditioner can be directly influenced by parameters such as the fracture, the fatigue life and the like of the air conditioner pipeline, the accurate detection of the stress of the air conditioner pipeline is very important.
Conventionally, stress strain gauges are arranged on a pipe of an air conditioner outdoor unit according to a detection standard, and stress values of the stress strain gauges are detected through stress testing equipment. However, the stress test equipment is affected by the electromagnetic interference of the reactor in the air conditioner outdoor unit, namely the electromagnetic interference of the coil of the reactor, so that a large error is generated. In general, the detection result adopting the method is 20% -1100% larger than the error fluctuation of the true stress value.
One currently adopted compensation measure is: and the reactor in the air conditioner outdoor unit is wrapped by tin foil paper so as to reduce the electromagnetic interference influence of the reactor. Tests show that about 5% -70% of error fluctuation still exists in the method, and the detection efficiency by adopting the compensation measure is low.
In order to solve the problem that the stress detection error of the existing air conditioner pipeline is large, the embodiment of the application provides a pipeline stress detection tool 20, which is an independent shielding type anti-interference stress test tool and is applied to a stress detection system, and the error caused by electromagnetic interference can be well eliminated.
Specifically, as shown in fig. 1, the air conditioner 10 includes an air conditioner external unit having a first reactor 11 and a controller. When the stress of the air conditioner pipeline is detected, the second reactor 26 in the pipeline stress detection tool 20 replaces the first reactor 11 in the air conditioner external unit and is electrically connected with the controller. So that the first reactor 11 can be turned off, thereby avoiding the electromagnetic field generated by the first reactor 11 from affecting the detection result.
Meanwhile, a stress strain gauge 13 is arranged on a pipe 12 of the air conditioner external unit according to a detection standard, and the stress strain gauge 13 is electrically connected with a stress test device through a flat cable 14. Electromagnetic interference corresponding to the first reactor 11 can be completely eliminated through the pipeline stress detection tool 20, so that the precision of a stress detection result is improved to 100%.
The specific structure and the corresponding relationship between the components of the pipeline stress detecting tool 20 provided in the present embodiment will be described in detail below.
Fig. 3 is a schematic structural diagram of a pipeline stress detection tool 20 according to an embodiment of the present application, and fig. 4 is a partial structural sectional view of the pipeline stress detection tool 20 in fig. 3, please refer to fig. 3 and fig. 4.
The pipeline stress detection tool 20 comprises a support 21, a shielding box 22 and a second reactor 26 installed in the shielding box 22.
The second reactor 26 is connected to the shield case 22 in an insulated manner, and the shield case 22 is made of a material such as a copper plate, a brass plate, a stainless steel plate, or a galvanized plate.
Optionally, when the shielding box 22 is made of a red copper plate or a brass plate, the shielding effect is optimal; when the shielding box 22 is made of stainless steel or galvanized sheet, the shielding effect is better. In a specific use, the material of the shielding box 22 may be determined according to actual conditions and use requirements, and the embodiment of the present application is not limited.
The second reactor 26 is used for replacing the first reactor 11 in the air conditioner outdoor unit, and when the stress of the air conditioner pipeline is detected, the stress strain gauge 13 is arranged on the pipe 12 of the air conditioner outdoor unit, and the stress strain gauge 13 is electrically connected with the stress test equipment through the flat cable 14. By electrically disconnecting the controller of the air conditioner 10 from the first reactor 11 and electrically connecting the controller to the second reactor 26 in the shield case 22, electromagnetic interference generated by the first reactor 11 can be avoided.
Optionally, the number of the second reactors 26 is at least one, and when the number of the second reactors 26 is multiple, the number may correspond to 1P, 1.5P, 2P, 3P, 5P, and the like. At the time of connection, a second reactor 26 of the same specification as the first reactor 11 is selected as a reactor to be connected, and then the controller is electrically connected to the selected second reactor 26.
Further, a bracket 21 is used for fixing on the working surface, and a shielding box 22 is fixedly connected to the top of the bracket 21. The shield case 22 has a hollow case structure and includes a plurality of shield units 23, and a plurality of second reactors 26 are mounted in the shield units 23 in a one-to-one correspondence. When the number of the second reactors 26 is less than the number of the shielding units 23, the redundant shielding units 23 are in an empty state. Preferably, the second reactors 26 are equal in number and correspond to the shielding units 23 one to one.
In order to facilitate electrical connection of the second reactor 26 to the controller, a socket 235 is provided on a side wall of each shielding unit 23, the socket 235 being electrically connected to the second reactor 26 located in the corresponding shielding unit 23. In the connection, the lead of the controller only needs to be electrically connected to the socket 235 corresponding to the second reactor 26 of the same specification.
Further, in order to improve heat dissipation of second reactor 26 in line stress detection tool 20, heat dissipation hole 225 is opened in a side wall of shield case 22.
Further, a ground wire 24 is connected to the shield case 22. During stress testing, the grounding wire 24 needs to be grounded safely, so that the safe use requirement is met.
As shown in fig. 4, in order to connect the second reactor 26 to the shield case 22 in an insulated manner, the second reactor 26 is fixed to the insulating pad 25 by providing the insulating pad 25 on the inner side of the bottom wall of the shield case 22.
Specifically, the insulating pad 25 is fixed to the inner side of the bottom wall of the shielding box 22, and a positioning boss 251 is disposed on one side of the insulating pad 25 away from the bottom wall of the shielding box 22.
The second reactor 26 includes a base mounting plate 27 located at the bottom, and the base mounting plate 27 is provided with mounting holes, the number of the mounting holes is the same as that of the positioning bosses 251, and the mounting holes and the positions correspond to the positions of the positioning bosses 251 one by one.
When mounting, the base mounting plate 27 on the second reactor 26 is mounted on the insulating mat 25 by the positioning bosses 251 so that the positioning bosses 251 pass through the mounting holes on the base mounting plate 27, and then is locked and fixed by the locking members.
Fig. 5 is an enlarged schematic view of a point B in fig. 4, and please refer to fig. 4 and fig. 5.
Further, a clamping portion 252 is further disposed on a side of the insulating pad 25 away from the bottom wall of the shielding box 22. The clamping portion 252 is provided with a positioning clamping groove, and the clamping portion 252 and the positioning boss 251 are arranged at intervals. So that the second reactor 26 can be mounted between the click portion 252 and the positioning boss 251.
Optionally, the cross section of the clamping portion 252 is an inverted L-shaped structure, and the clamping portion 252 and the insulating pad 25 form a positioning clamping groove.
With the joint portion 252 assorted, the base mounting plate 27 further includes a clamping portion 272, and the clamping portion 272 can be clamped in the positioning card slot. Meanwhile, the mounting hole can be fitted with the positioning boss 251.
In the present embodiment, a base mounting plate 27 is provided at the bottom of the second reactor 26, wherein the base mounting plate 27 protrudes from both sides of the second reactor 26. One of the two sides of the protrusion is provided with a mounting hole, and the other side is provided with a clamping part 272. When the installation, second reactor 26 passes through base mounting panel 27 joint in the positioning card groove, then makes location boss 251 pass the mounting hole, and location boss 251 and mounting hole tight fit to accomplish the installation.
Specifically, the positioning boss 251 may be designed to be a tapered structure with a small top and a large bottom, and an annular recessed section is further disposed between the positioning boss 251 and the insulating pad 25. When the installation is carried out, the small end of the positioning boss 251 passes through the installation hole, and under the action of external force, the large end also passes through the installation hole until the base installation plate 27 is clamped in the annular concave section, so that the installation can be completed.
It can be understood that, the positioning boss 251 and the mounting hole may also be in clearance fit, the positioning boss 251 is provided with an external thread, and after the positioning boss 251 is inserted into the mounting hole, the positioning boss 251 is screwed with the external thread on the positioning boss 251 by using a nut or a lock nut.
In an alternative embodiment, the second reactor 26 is fixedly connected to the insulating pad 25, or may be fixedly connected to the base mounting plate 27 only by the plurality of positioning bosses 251 without using a positioning slot. The specific fixing manner is various, and is not limited in this embodiment. Meanwhile, the second reactor 26 may be provided on a side wall of the shield case 22, and is not limited to the bottom wall of the shield case 22 as long as the second reactor 26 is fixed to the inside of the shield case 22 in an insulated manner.
As shown in fig. 4, the second reactor 26 includes a reactor plug 276, and the second reactor 26 is electrically connected to the corresponding socket 235 through the connection line 28. Here, connection line plugs 285 are provided at both ends of the connection line 28, and when electrically connected, the connection line plug 285 at one end of the connection line 28 is connected to the socket 235, and the connection line plug 285 at the other end is connected to the reactor plug 276.
The air conditioner pipeline stress detection method provided by the embodiment of the application comprises the following steps:
a wiring step: replacing the first reactor 11 with the same specification in the air conditioner external unit by the second reactor 26 in the pipeline stress detection tool 20, namely electrically connecting the second reactor 26 with the same specification as the first reactor 11 with the air conditioner controller; and meanwhile, electrically connecting the stress strain gauge 13 on the installed air conditioner external unit pipe 12 with stress testing equipment.
Specifically, in the wiring step, the second reactor 26 in the pipeline stress detection tool 20 is used to replace the first reactor 11 with the same specification in the air conditioner external unit to be electrically connected with the air conditioner controller, and the method specifically includes the following disconnection step and connection step:
a disconnection step: disconnecting the electric connection between the air conditioner controller and a first reactor 11 in the air conditioner external unit;
a connection step: the air conditioner controller is electrically connected with the second reactor 26 in the pipeline stress detection tool 20, and the second reactor 26 and the first reactor 11 in the air conditioner external unit are in the same specification.
Optionally, before the step of connecting, the method further comprises the step of grounding: the grounding wire 24 in the pipeline stress detection tool 20 is reliably grounded.
Optionally, before the grounding step, the method further comprises a preparation step of: installing and connecting an internal machine and an external machine of the air conditioner; a stress strain gauge 13 is stuck on the air conditioner external unit piping 12 according to the stress detection standard, and meanwhile, the flat cable 14 is connected with the stress test equipment; and placing the pipeline stress detection tool 20.
Optionally, after the step of connecting, the method further comprises the step of testing: and respectively adjusting different testing working conditions of the air conditioner 10 to detect stress values on the air conditioner external unit pipe 12 under different testing working conditions.
Test examples
Reactors of all specifications are integrated in the pipeline stress detection tool 20, four positions are selected on the air conditioner external unit pipe 12 to be provided with the stress strain gauges 13, and aiming at an original detection method without tin foil-coated paper, a detection method for supplementing electromagnetic interference of the tin foil-coated paper and an air conditioner pipeline stress detection method applying the pipeline stress detection tool 20, the three methods are used for carrying out test comparison, and the detection structure and the electromagnetic interference result are recorded in a table 1.
Table 1 test examples three stress detection methods and corresponding electromagnetic interference test results
As can be seen from table 1, the method for detecting the stress of the air conditioner pipeline by using the pipeline stress detection tool 20 provided by the embodiment of the present application can completely eliminate the influence of electromagnetic interference, and is beneficial to improving the accuracy of the detection result of the stress of the air conditioner pipeline.
In addition, because the pipeline stress detection tool 20 integrates the second reactors 26 with various specifications, even all specifications, when the reliability of the pipelines of different air conditioners 10 is detected, switching among different air conditioners can be quickly and conveniently carried out. Compared with the supplement measures of wrapping the tin foil paper adopted at present, the time for pasting and removing the tin foil paper can be saved by 20 minutes in the detection process of one set of air conditioner 10, so that the test efficiency can be improved by 33 percent.
The pipeline stress detection tool 20, the air conditioner pipeline stress detection system 100 and the method provided by the embodiment of the application have the beneficial effects that: the air conditioner pipeline reliability detection device is reasonable in design and simple in structure, can well improve the phenomenon of large errors generated by adopting a traditional stress detection mode under different working conditions, and improves the reliability detection accuracy of the pipeline; and this pipeline stress detects frock 20 and has integrateed the reactor of multiple specification, is favorable to switching fast between the air conditioner 10 of different specifications, is favorable to realizing shielding formula anti-interference stress detection through independent shielded cell 22.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.
Claims (10)
1. A pipeline stress detection tool is used for assisting in detecting pipeline stress of an air conditioner outdoor unit, the air conditioner outdoor unit is provided with a first reactor (26) and a controller which are electrically connected, and the pipeline stress detection tool is characterized by comprising a shielding box (22) and at least one second reactor (11) which is installed in the shielding box (22), wherein the second reactor (11) is in insulation connection with the shielding box (22);
when the pipeline stress of the air conditioner outdoor unit is detected, the second reactor (11) can replace the first reactor (26) to be electrically connected with the controller, so that the first reactor (26) can be closed, and the electromagnetic field generated by the first reactor (26) is prevented from influencing the detection result.
2. The pipeline stress detection tool according to claim 1, wherein the shielding box (22) comprises a plurality of shielding units (23), the second reactors (11) are mounted in the shielding units (23) in a one-to-one correspondence manner, and a socket (235) electrically connected with the corresponding second reactor (11) is arranged on a side wall of each shielding unit (23).
3. The pipeline stress detection tool according to claim 1, wherein an insulating pad (25) is arranged on the inner side of the bottom wall of the shielding box (22), and the second reactor (11) is fixedly arranged on the insulating pad (25).
4. The pipeline stress detection tool according to claim 3, wherein a positioning boss (251) is arranged on one side, away from the bottom wall of the shielding box (22), of the insulating pad (25);
the second reactor (11) comprises a base mounting plate (27), the base mounting plate (27) is provided with a mounting hole matched with the positioning boss (251), and the positioning boss (251) and the insulating pad (25) are fixedly connected through the base mounting plate (27) in a sleeved mode.
5. The pipeline stress detection tool according to claim 4, wherein a clamping portion (252) is further arranged on one side, away from the bottom wall of the shielding box (22), of the insulating pad (25), a positioning clamping groove is formed in the clamping portion (252), and the clamping portion (252) and the positioning boss (251) are arranged at intervals;
the base mounting plate (27) further comprises a clamping part (272), the clamping part (272) is clamped in the positioning clamping groove, and the mounting hole is matched with the positioning boss (251).
6. The pipeline stress detection tool according to claim 1, wherein heat dissipation holes (225) are formed in the side wall of the shielding box (22).
7. The pipeline stress detection tool according to claim 1, wherein the shielding box (22) is further connected with a grounding wire (24).
8. The pipeline stress detection tool according to claim 1, wherein the pipeline stress detection tool (20) further comprises a support (21), and the shielding box (22) is fixedly connected to the top of the support (21).
9. The pipeline stress detection tool according to claim 1, wherein the shielding box (22) is made of a copper plate, a brass plate, a stainless steel plate or a galvanized plate.
10. An air conditioner pipeline stress detection system is characterized by comprising stress test equipment, an air conditioner (10) and a pipeline stress detection tool (20) as claimed in any one of claims 1 to 9, wherein the air conditioner (10) comprises a controller and an air conditioner outdoor unit with a first reactor (26);
the second reactor (11) replaces the first reactor (26) to be electrically connected with the controller, the specifications of the second reactor (11) and the first reactor (26) are the same, a stress strain gauge (13) is arranged on a pipe (12) of the air conditioner outdoor unit, and the stress strain gauge (13) is electrically connected with the stress test equipment through a flat cable (14).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175036A (en) * | 2020-02-12 | 2020-05-19 | 宁波奥克斯电气股份有限公司 | Pipeline stress detection tool, air conditioner pipeline stress detection system and method |
| CN111175036B (en) * | 2020-02-12 | 2024-07-16 | 宁波奥克斯电气股份有限公司 | Pipeline stress detection tool, air conditioner pipeline stress detection system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175036A (en) * | 2020-02-12 | 2020-05-19 | 宁波奥克斯电气股份有限公司 | Pipeline stress detection tool, air conditioner pipeline stress detection system and method |
| CN111175036B (en) * | 2020-02-12 | 2024-07-16 | 宁波奥克斯电气股份有限公司 | Pipeline stress detection tool, air conditioner pipeline stress detection system and method |
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